CN112730517A - Dew point refrigerating system and dew point detector thereof - Google Patents

Abstract

The invention relates to the technical field of dew point detector detection, and provides a dew point refrigerating system and a dew point detector thereof, wherein the dew point refrigerating system comprises a temperature detector for detecting temperature; a refrigeration structure having a refrigeration surface; one end of the heat conduction structure is connected with the refrigerating surface, the other end of the heat conduction structure is provided with a protruding part, and an open window is formed by the protruding part in a surrounding mode; the temperature detector is connected with the heat conduction structure; and a dew condensation structure enclosed in the open window. The invention reduces the volume of the dew point refrigerating system by the dew point refrigerating system, and avoids the water vapor condensed on the dew condensation structure from permeating into the dew point refrigerating system and the dew point detector applying the dew point refrigerating system. The dew point detector can prevent water vapor and air from entering and damaging circuits and components inside the dew point detector, avoid toxic gas from leaking outside through the cavity, avoid the electric conduction of the electric needle and the heat dissipation seat and avoid the dislocation generated by the connection between the electric needle and the control adapter plate.

Description

Dew point refrigerating system and dew point detector thereof

Technical Field

The invention relates to the technical field of dew point detector detection, in particular to a dew point refrigerating system and a dew point detector thereof.

Background

In the working environment of natural gas, metallurgy, health quarantine, toxic or corrosive gas and the like, water vapor in the gas has important influence on the operation. At present, the dew point temperature of the gas is often detected by a dew point detector, so that the humidity in the gas is indirectly measured.

The dew point temperature of the gas is that the water vapor in the gas is cooled to condensed phase under the condition of isobaric pressure, and then the temperature of the dew layer sensor is controlled to enable the water vapor in the gas and the flat surface of water or ice to be in a thermodynamic phase equilibrium state, wherein the temperature of the dew layer is the dew point temperature of the gas.

In the prior art, a dew point detector is composed of a heat dissipation system, a refrigeration structure, a temperature measuring resistor, photoelectric detection, a dew condensation structure and other components. In practical application occasions, the dew point detector has corresponding requirements on the size, the dust pollution environment adaptability, the measurement temperature difference limit, the sealing gas pressure resistance, the corrosion resistance and the like.

The existing dew point detector uses copper as a condensation structure, the condensation structure has poor pollution resistance and is easy to scratch, and the surface of the condensation structure is dirty and scratched, so that the detection precision is reduced, and the long-term use is not facilitated.

When the existing dew point detector is used, in the process that water vapor in the working environment is subjected to condensation through a condensation structure, part of the water vapor permeates into the interior of the dew point detector, so that a circuit and other components in the dew point detector are damaged, and the service life of the dew point detector is shortened.

Disclosure of Invention

The invention aims to overcome the defect that water vapor permeates into a dew point detector in the prior art, and provides a dew point refrigerating system which is used for preventing water vapor from permeating into the dew point refrigerating system and the interior of the dew point detector using the dew point refrigerating system and reducing the volume of the dew point refrigerating system.

The technical scheme adopted by the invention is that the dew point refrigerating system comprises a temperature detector for detecting temperature; a refrigeration structure having a refrigeration surface; one end of the heat conduction structure is connected with the refrigerating surface, the other end of the heat conduction structure is provided with a protruding part, and an open window is formed by the protruding part in a surrounding mode; the temperature detector is connected with the heat conduction structure; a dew condensation structure enclosed in the open window; the refrigeration capacity generated by the refrigeration surface is transmitted to the condensation structure through the heat conduction structure, so that the water vapor in the working environment is condensed on the condensation structure to form condensate.

In the scheme, the refrigeration structure adopts a thermoelectric refrigeration principle, and the refrigeration surface of the refrigeration structure forms cold energy to act on the heat conduction structure. The heat conduction structure transmits cold energy from the refrigeration structure to the condensation structure, so that water vapor in the working environment is condensed on the condensation structure to form condensate. And then the temperature of the heat conduction structure is detected by a temperature detector, so that the temperature of the condensation structure, namely the dew point temperature of the gas, is indirectly detected, and the temperature of the gas is measured in an auxiliary manner, so that the humidity in the gas is obtained.

Compared with the prior art, the split of the dew point refrigeration system is divided into the refrigeration structure, the heat conduction structure and the dewing structure, so that the volume of the dew point refrigeration system can be reduced, the response speed is increased, and the refrigeration performance loss is avoided.

Compared with the prior art, the dew point refrigerating system has the advantages that the open window is arranged on the heat conduction structure, the dew condensation structure is enclosed and shielded in the open window, and therefore water vapor which is condensed on the dew condensation structure is prevented from permeating into the dew point refrigerating system and the dew point detector applying the dew point refrigerating system.

Compared with the prior art, the scheme is also provided with a dewing structure in the occupied space of the heat conduction structure; that is, the sum of the space occupied by the heat conduction structure and the dew condensation structure is consistent with the space occupied by the heat conduction structure, so that the volume of the dew point refrigerating system is reduced.

Preferably, the condensation structure is a silicon wafer, and a platinum layer, a gold layer or a rhodium layer is arranged on the outer surface of the condensation structure; (ii) a And/or the mirror surface is a silicon wafer, a platinum layer, a gold layer or a rhodium layer is arranged on the outer surface of the mirror surface, and a hydrophobic material coating is arranged on the upper surface of the platinum layer, the gold layer or the rhodium layer. Compared with the prior art, the moisture condensation structure has the advantages that the platinum layer or the gold layer or the rhodium layer and the hydrophobic material coating are arranged on the outer surface of the moisture condensation structure, the conventional moisture condensation structure is abandoned to be copper, the outer surface of the copper is provided with the gold layer, the anti-pollution capacity of the moisture condensation structure can be improved, the moisture condensation structure is not prone to being scratched, the detection precision is prevented from being adversely affected, and the long-term use is facilitated.

Preferably, the lower end of the heat conduction structure is provided with an accommodating groove, and the thermometer is arranged in the accommodating groove. This scheme has set up the holding tank and will the thermometer encloses to cover to further prevent that the moisture condensation from permeating in the structural vapor infiltration of dewfall in dew point refrigerating system, cause the influence to the measurement accuracy of thermometer, and damage the thermometer. Meanwhile, the volume of the dew point refrigerating system is also reduced.

Preferably, the thermometer is a platinum resistor, and the outer surface of the thermometer is provided with a heat conduction silicone layer or a heat conduction adhesive layer. This scheme adopts heat conduction silicone grease layer or heat-conducting adhesive layer to make thermodetector and heat conduction structure zero clearance paste tightly to the area of increase heat conduction, in order to improve heat transfer efficiency.

Preferably, the lower end part of the heat conducting structure is provided with an installation groove, and the upper end part of the refrigeration structure is embedded in the installation groove; the holding tank is located the top of mounting groove, and with the mounting groove is linked together. In this scheme installed mounting groove, holding tank respectively with refrigeration structure, dewfall structure, enclosed refrigeration structure, dewfall structure and cover in heat conduction structure, prevent that the dewfall from the structural vapor infiltration of dewfall in dew point refrigerating system in, cause the damage to refrigeration structure, heat conduction structure.

Preferably, the protrusion is integrally formed with the heat conducting structure; and/or the bulge is integrally formed with the heat conducting structure; the dew point refrigerating system further comprises a sealing ring, and the sealing ring wraps the periphery of the protruding portion. In this scheme, the bulge with heat conduction structure integrated into one piece can prevent that the vapor of dewfall on the dewfall structure from oozing by the gap between bulge and the heat conduction structure, causes the damage to dew point refrigerating system and applied this dew point refrigerating system's dew point detector. The scheme is provided with the sealing ring, so that the condensation of water vapor on the condensation structure can be prevented from permeating into the dew point refrigerating system from the outer side of the heat conduction structure.

Preferably, an upper surface of the protrusion is higher than an upper surface of the dew condensation structure. The scheme is arranged in such a way that the water vapor which is exposed on the dewing structure is limited in the open window, so that the outward seepage is avoided.

A dew point detector comprises a control system, a photoelectric detection system, a dew point refrigerating system and a heat dissipation system; the control system comprises a control adapter plate, an electric needle and a remote control host; the heat dissipation system comprises a heat dissipation seat, and the heat dissipation seat is provided with a cavity; the control adapter plate is positioned in the cavity and connected to the remote control host; the electric needle is inserted into the cavity and electrically connected with the control adapter plate, and the electric needle is in insulated connection with the heat dissipation seat; the electric needle is also electrically connected with the photoelectric detection system and the dew point refrigerating system; the cooling surface that refrigeration structure was equipped with connect in the radiating seat.

In the scheme, the photoelectric detection system detects the thickness of condensate on the condensation structure by using the change of the reflected light intensity of the condensation structure, wherein the condensate on the condensation structure refers to dew or frost condensed on the condensation structure. The heat dissipation seat is used for dissipating heat generated by the heat dissipation surface of the refrigeration structure. The electric needle is connected with the heat dissipation seat in an insulating mode, and the influence of the heat dissipation seat on the normal use of the dew point detector is avoided. The cavity is used for accommodating the control adapter plate, and the electric pin is inserted in the cavity and electrically connected to the control adapter plate, so that the circuit of the dew point detector is intensively positioned in the cavity of the heat dissipation seat, the circuit is prevented from being exposed outside the dew point detector, the detection effect is influenced, and the circuit is damaged.

This scheme refrigerates through the refrigeration structure among the dew point refrigerating system, and when the temperature of the upper surface of dew structure dropped below gaseous dew point temperature, the upper surface of dew structure began the dewfall, under the control of remote control host computer, photoelectric detection system detects the condensate thickness of the upper surface of dew structure to the condensate thickness information feedback that will detect out reaches the remote control host computer. And under the control of the remote control host, the refrigerating power of the refrigerating structure is adjusted, so that the temperature of the condensation structure is consistent with the dew point temperature of the gas. The remote control host machine is in information interaction with the dew point refrigerating system and the photoelectric detection system through the control adapter plate.

Preferably, the cavity is filled with a sealant to seal the cavity from gas outside the cavity. According to the scheme, firstly, the cavity is sealed by the sealant, so that water vapor and air are prevented from entering and damaging circuits and components inside the dew point detector; secondly, when the dew point detector is applied to the operation environment of toxic gas, the toxic gas can be prevented from leaking outside through the cavity, and the life safety of workers is threatened; thirdly, the electric needle and the heat dissipation seat are insulated by the sealant, so that the electric needle and the heat dissipation seat are prevented from conducting electricity; and thirdly, the electric needle and the control adapter plate are fixed by the sealant, so that the situation that the electric needle and the control adapter plate are connected to generate dislocation and the detection cannot be performed smoothly is avoided.

Preferably, the dew point refrigerating system is arranged on the upper surface of the heat dissipation seat, and the photoelectric detection system comprises a photoelectric detection device and a detection cover body; after the lower surface of the detection cover body is upwards sunken and part of the structure is removed, a detection cavity is formed between the side wall and the top of the detection cover body; the photoelectric detection device is arranged on the top of the detection cover body; after the detection cover body is installed on the heat dissipation seat, the dew point refrigerating system is located in the detection cavity. Compared with the prior art, the scheme is provided with the detection cavity, so that the influence of air flow fluctuation on the detection result can be avoided, and the detection result is not accurate.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the dew point refrigeration system is divided into the refrigeration structure, the heat conduction structure and the dewing structure, so that the volume of the dew point refrigeration system can be reduced, the response speed is increased, and the refrigeration performance loss is avoided; the heat conduction structure is provided with an open window, an accommodating groove and an installing groove to enclose and cover the dewing structure, the temperature detector and the refrigerating structure, and the water vapor which is dewed on the dewing structure is prevented from permeating into the dew point refrigerating system and the dew point detector of the dew point refrigerating system. The dew point detector is provided with the heat dissipation seat with the cavity, the electric needle and the control adapter plate, so that circuits of the dew point detector are intensively positioned in the cavity of the heat dissipation seat, and the circuits are prevented from being exposed outside the dew point detector, thereby influencing the detection effect and damaging the circuits; according to the invention, the sealant is arranged in the cavity, so that the damage to the internal circuit and components of the dew point detector caused by the entrance of water vapor and air is prevented, the toxic gas is prevented from leaking to the outside through the cavity, the electric conduction of the electric needle and the heat dissipation seat is avoided, and the dislocation caused by the connection between the electric needle and the control adapter plate is avoided.

Drawings

Fig. 1 is an exploded view of example 1 of the present invention.

Fig. 2 is a structural view of embodiment 1 of the present invention.

Fig. 3 is a perspective view of theheat conducting structure 105 of the present invention.

Fig. 4 is a bottom view of the thermallyconductive structure 105 of the present invention.

Fig. 5 is an exploded view of example 2 of the present invention.

FIG. 6 is a cross-sectional view of example 2 of the present invention.

Reference numerals: the detection device comprises a detectionupper cover 100, aphotoelectric detection device 101, adetection cover body 102, acondensation structure 103, asealing ring 104, aheat conduction structure 105, aconvex part 1051, anaccommodating groove 1052, aninstalling groove 1053, atemperature detector 106, arefrigeration structure 107, anelectric needle 108, aheat dissipation seat 109, acavity 1091, acontrol adapter plate 110, anaviation connector 111 and a heatdissipation tail cover 112.

Detailed Description

The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

As shown in fig. 1 and 2, the present embodiment provides a dew point refrigeration system, which includes acondensation structure 103, aheat conducting structure 105, atemperature detector 106, and arefrigeration structure 107.

In order to facilitate understanding of the dew point refrigeration system described in embodiment 1 of the present application, an application scenario of the dew point refrigeration system will be described first. The dew point refrigerating system is applied to a dew point detector, the dew point detector enables water vapor to be condensed through the dew point refrigerating system, then thetemperature detector 106 detects the dew point temperature of the water vapor, and then the temperature of the gas is measured in an auxiliary mode, so that the humidity in the gas is obtained. The dew point detector can be applied to various operating environments, such as natural gas, metallurgy, health quarantine, toxic corrosive gas-containing operating environments and the like, and has higher requirements on the performance of the dew point detector in the aspect of application because the dew point detector is applied to various different operating environments. Among other things, the performance of the dew point refrigeration system has a large impact on the application of the dew point detector.

The specific working process of the dew point refrigerating system is as follows: therefrigeration structure 107 generates cold energy by a thermoelectric refrigeration principle, and the cold energy generated by the refrigeration surface of therefrigeration structure 107 is transmitted to thecondensation structure 103 through theheat conduction structure 105, so that the water vapor in the working environment is condensed on thecondensation structure 103 to form condensate. The dew point refrigeration system detects the temperature of theheat conduction structure 105 through thetemperature detector 106, thereby indirectly detecting the temperature of thecondensation structure 103.

Wherein,refrigeration structure 107 is the refrigeration piece, the refrigeration piece has refrigeration face and cooling surface, andrefrigeration structure 107's upper surface is the refrigeration face, and its lower surface is the cooling surface. Specifically, thecooling structure 107 may have a three-layer structure, but is not limited to the three-layer structure.

In one embodiment, thecooling structure 107 is a three-layer structure, and the cross-sectional area of the uppermost layer of thecooling structure 107 is smaller than the cross-sectional area of the other layers of the structure.

Wherein theheat conducting structure 105 is used to transfer cooling energy from the cooling surface of thecooling structure 107, as shown in fig. 3. In particular, theheat conducting structure 105 is connected to the refrigeration surface at one end and has aprotrusion 1051 at the other end. In order to prevent water vapor condensed on thecondensation structure 103 from infiltrating into the dew point refrigeration system and save the occupied space of the dew point refrigeration system, theprotrusion 1051 encloses an open window to accommodate thecondensation structure 103. In detail, the open window has a substantially square shape, but is not limited to a square shape. Also, just as the open window is generally square, theprojections 1051 form rounded corners at the four corners of the open window to facilitate mounting and dismounting of thecondensation structure 103. In detail, the protrudingportion 1051 is integrally formed with theheat conducting structure 105 in order to prevent the water vapor condensed on thecondensation structure 103 from being leaked out.

In one application embodiment, the protrudingportion 1051 is located at the side of theheat conducting structure 105 and encloses an open window disposed at the side of theheat conducting structure 105, and the open window is used for accommodating thedewing structure 103.

Specifically, in order to prevent the water vapor on thedew condensation structure 103 from permeating into the dew point refrigerating system, the damage is caused to thetemperature detector 106 and the refrigeratingstructure 107, the occupied space of the dew point refrigerating system is saved, and the upper surface of theprotruding part 1051 is higher than the upper surface of thedew condensation structure 103, so that the water vapor on thedew condensation structure 103 is limited in the opening window. Specifically, as shown in fig. 4, in order to further prevent the water vapor exposed on thedewing structure 103 from permeating into the dew point refrigerating system, damaging thetemperature detector 106 and the refrigeratingstructure 107, and saving the occupied space of the dew point refrigerating system, anaccommodating groove 1052 and aninstallation groove 1053 are disposed at the lower end of theheat conducting structure 105, theinstallation groove 1053 is communicated with the outside of theheat conducting structure 105 and is located below theaccommodating groove 1052, and theinstallation groove 1053 is communicated with theaccommodating groove 1052. Theaccommodating groove 1052 is used for accommodating atemperature measuring meter 106, thetemperature measuring meter 106 is arranged in theaccommodating groove 1052 and is contacted with the inner wall of theaccommodating groove 1052, and thetemperature measuring meter 106 is connected with theinstallation groove 1053 in an insulation mode. Mountinggroove 1053 matches withrefrigeration structure 107, and the upper end ofrefrigeration structure 107 is embedded in mountinggroove 1053. In detail, the mountinggroove 1053 and therefrigeration structure 107 may each be a rectangular groove, but are not limited to rectangular grooves.

In one application embodiment, the uppermost structure of therefrigeration structure 107 is inserted into the mountingchannel 1053.

Specifically, theheat conducting structure 105 is substantially "convex" in shape, with an upper end portion having a smaller cross-sectional area than a lower end portion thereof, to house thethermometer 106 and thecooling structure 107. In particular, theheat conducting structure 105 may be made of a heat conducting metal, preferably copper.

Thecondensation structure 103 is a condensation place of the dew point refrigeration system. Specifically, thecondensation structure 103 has a substantially square shape, but is not limited to a square shape. Specifically, thedew condensation structure 103 is enclosed within the open window. Thecondensation structure 103 is fitted into the open window, receives cooling energy from theheat conduction structure 105, and condenses water vapor in the working environment on the upper surface of thecondensation structure 103. Specifically, in order to improve the heat conduction efficiency, thedew condensation structure 103 is a silicon wafer. Specifically, in order to improve the anti-fouling ability of thedew condensation structure 103 and make thedew condensation structure 103 not easily scratched, a platinum layer or a gold layer or a rhodium layer and a hydrophobic material coating layer are provided on the outer surface of thedew condensation structure 103, and further, the platinum layer or the gold layer or the rhodium layer is provided on the upper surface of thedew condensation structure 103, and the hydrophobic material coating layer is provided on the upper surface of the platinum layer or the gold layer or the rhodium layer.

Wherein, thetemperature detector 106 is connected to theheat conducting structure 105 and is used for measuring temperature. Specifically, thethermometer 106 has a substantially rectangular parallelepiped shape. Specifically, the thermometer is a platinum resistor, and in order to further increase the heat conduction area, a heat conduction silicone layer or a heat conduction adhesive layer is arranged on the outer surface of the platinum resistor, so that thethermometer 106 and theheat conduction structure 105 are tightly attached without a gap.

Wherein, in order to prevent the vapor exposed on thecondensation structure 103 from permeating into the dew point refrigerating system from the outside of the heat conduction structure, damage is caused to thetemperature detector 106 and the refrigeratingstructure 107, the dew point refrigerating system further comprises asealing ring 104, and thesealing ring 104 is wrapped on the periphery of thebulge 1051. Specifically, theseal ring 104 may be a rubber seal ring.

In one embodiment, the sealingring 104 is wrapped around the upper end of theheat conducting structure 105, and the portion of theheat conducting structure 105 wrapped by the sealingring 104 is located below theprotrusion 1051.

In one embodiment, the sealingring 104 is wrapped around the lower end of theheat conducting structure 105.

Example 2

As shown in fig. 5, this embodiment is a complete structural embodiment based on the scheme shown in fig. 2, and provides a dew point detector, which includes a photoelectric detection system, a dew point refrigeration system in embodiment 1, a heat dissipation system, and a control system.

The photoelectric detection system comprises aphotoelectric detection device 101 and adetection cover 102. In detail, thephoto detection device 101 includes an LED emission light source and a photosensitive receiving tube, and the thickness of the condensate is measured by detecting the change of the intensity of the reflected light of thedew condensation structure 103 through the LED emission light source and the photosensitive receiving tube. In detail, thedetection cover 102 is provided with a detection cavity, and the detection cavity is formed between the side wall and the top of thedetection cover 102 after the lower surface of the detection cover is recessed upwards to remove a part of the structure.

Thephotoelectric detection device 101 is positioned at the top of thedetection cover body 102; after thedetection cover body 102 is installed on the heat dissipation system, the dew point refrigeration system is located in the detection cavity. In detail, in order to facilitate the mounting of thephotodetection device 101 on the upper end of thedetection cover 102, the upper end of thedetection cover 102 is provided with thedetection cover 100, and thedetection cover 100 is detachably mounted on thedetection cover 102. Specifically, the dew point refrigeration system is located within the detection chamber. Anair hole 1021 is formed in the side wall of thedetection cover body 102, and theair hole 1021 is communicated with the detection cavity.

The control system comprises anelectric needle 108, acontrol adapter plate 110, anaviation connector 111 and a remote control host. The remote control host is not shown in the figure.

In particular, theelectrical pin 108 is used for electrical conduction. In detail, theelectrical pin 108 is composed of a conductive metal, and is provided with a plurality of pieces. Theelectrical pins 108 may be of the same size or of different sizes. Specifically, theaviation connector 111 is further connected to a remote control host, so that the remote control host can perform information interaction with thecontrol adapter board 110. Thecontrol adapter plate 110 can observe the current detection state and the corresponding parameters through a screen arranged on the remote control host, and set the detection parameters through the remote control host. In detail, theelectrical pin 108 may be connected with thecontrol adapter plate 110 by means of welding. In addition, theelectric needle 108 can also be electrically connected to a photoelectric detection system and a dew point refrigeration system through a cable.

The heat dissipation system includes aheat dissipation base 109 and a heatdissipation tail cover 112.

Specifically, theheat sink 109 is substantially cylindrical. The upper surface of theheat sink 109 is connected to the heat dissipating surface of therefrigeration structure 107 of the dew point refrigeration system so as to dissipate heat generated by the heat dissipating surface through theheat sink 109. Specifically, in order to facilitate heat dissipation, theheat sink 109 may be made of a metal material. As shown in fig. 4, in detail, acavity 1091 is formed at the lower end of theheat sink 109.

Specifically, the heatdissipation tail cover 112 is sequentially provided with anaviation connector 111 and acontrol adapter plate 110 from bottom to top, and theaviation connector 111 is connected with thecontrol adapter plate 110. In detail, the heat dissipatingtail cap 112 is mounted on the lower end portion of theheat dissipating base 109, and the heat dissipatingtail cap 112 may be connected to theheat dissipating base 109 by a screw.

When the heatdissipation tail cover 112 and theheat dissipation base 109 are mounted, theaviation connector 111 and thecontrol adapter plate 110 are both located in thecavity 1091. In detail, theaeronautical interface 111 may also be connected to theelectrical needle 108. In detail, theelectrical pin 108 is inserted into thecavity 1091 and electrically connected to thecontrol adapter plate 110, and theelectrical pin 108 is connected to theheat sink 109 in an insulating manner. Theelectrical pins 108 can be inserted into thecavity 1091 from the upper end of theheat dissipation base 109.

Wherein, in order to prevent that vapor and air from getting into to cause the damage to dew point detector internal circuit and components and parts, avoid toxic gas to leak to the external world throughcavity 1091, avoidelectric needle 108 and radiatingseat 109 electrically conductive, avoid being connected betweenelectric needle 108 and thecontrol keysets 110 and produce the dislocation, this application embodiment is filled with the sealant incavity 1091. The sealant may be glue, and in detail, the sealant is filled in thecavity 1091, and the glue seals thecavity 1091.

In one embodiment, to prevent theelectrical pin 108 and theheat sink 109 from conducting electricity, an insulating pad, which may be a rubber pad, may be disposed on the inner wall of thecavity 1091.

In one application embodiment, theelectrical pins 108 and thecontrol adapter plate 110 may be secured by a glass sintering process.

In one application embodiment, the hermetic seal between theelectrical pin 108 and theheat sink 109 may be achieved by a glass sintering process.

The specific working process of the dew point detector is as follows: water vapor in the working environment sweeps over the upper surface of thedew condensation structure 103 as it passes through the detection chamber. When the temperature of the upper surface of thecondensation structure 103 is higher than the dew point temperature of the gas, the upper surface of thecondensation structure 103 is in a dry state. At this time, under the control of the control system, thephotoelectric detection device 101 transmits a signal to the remote control host through thetransfer control board 110 and theaviation connector 111, and receives a feedback signal from the remote control host, and the feedback signal is compared and amplified by the control loop to drive therefrigeration structure 107 to perform refrigeration. When the temperature of the upper surface of thecondensation structure 103 is reduced to be lower than the dew point temperature of the gas, the upper surface of thecondensation structure 103 begins to condense to form a condensate, at this time, thephotoelectric detection device 101 continuously transmits a signal to the remote control host through thetransfer control board 110 and theaviation connector 111, receives a feedback signal from the remote control host, compares and amplifies the feedback signal through the control loop according to the change of the feedback signal, adjusts the excitation current of therefrigeration structure 107, changes the refrigeration power of therefrigeration structure 107, and keeps the temperature of the upper surface of thecondensation structure 103 at the dew point temperature of the gas. At this time, the temperature of thecondensation structure 103 is detected by thethermometer 106, and the humidity in the gas can be obtained.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.

Claims (10)

1. A dew point refrigeration system comprising a thermometer (106) for sensing temperature; it is characterized by also comprising

A refrigeration structure (107) having a refrigeration surface;

the heat conduction structure (105) is connected with the refrigerating surface at one end, a protruding part (1051) is arranged at the other end, and an open window is surrounded by the protruding part (1051); the temperature detector (106) is connected with the heat conducting structure (105);

a condensation structure (103) enclosed in the open window;

the refrigerating capacity generated by the refrigerating surface is transmitted to the condensation structure (103) through the heat conduction structure (105), so that the water vapor in the working environment is condensed on the condensation structure (103) to form condensate.

2. A dew point refrigeration system as claimed in claim 1, characterised in that the condensation structure (103) is a silicon wafer and its outer surface is provided with a platinum or gold layer or a rhodium layer; and/or the mirror surface is a silicon wafer, a platinum layer, a gold layer or a rhodium layer is arranged on the outer surface of the mirror surface, and a hydrophobic material coating is arranged on the upper surface of the platinum layer, the gold layer or the rhodium layer.

3. A dew point cooling system as claimed in claim 1, characterized in that the lower end of the heat conducting structure (105) is provided with a receiving groove (1052), the thermometers (106) being placed in the receiving groove (1052).

4. A dew point refrigeration system as claimed in claim 3, characterized in that the temperature probe (106) is a platinum resistor and is provided with a layer of thermally conductive silicone or adhesive on its outer surface.

5. A dew point refrigeration system as claimed in claim 3, characterized in that the lower end of the heat conducting structure (105) is provided with a mounting groove (1053), and the upper end of the refrigeration structure (107) is embedded in the mounting groove (1053);

the accommodating groove (1052) is positioned above the mounting groove (1053) and is communicated with the mounting groove (1052).

6. A dew point refrigeration system as claimed in claim 1, characterized in that the bulge (1051) is integrally formed with the heat conducting structure (105);

and/or the protrusion (1051) is integrally formed with the thermally conductive structure (105); the dew point refrigerating system further comprises a sealing ring (104), and the periphery of the bulge (1051) is wrapped by the sealing ring (104).

7. A dew point refrigeration system as claimed in any one of claims 1 to 6, characterised in that the upper surface of the protruding portion (1051) is higher than the upper surface of the dew condensation structure (103).

8. A dew point detector comprising a control system, a photoelectric detection system, and further comprising a dew point refrigeration system and a heat dissipation system as claimed in any one of claims 1 to 7;

the control system comprises a control adapter plate (110), an electric needle (108) and a remote control host;

the heat dissipation system comprises a heat dissipation seat (109), and the heat dissipation seat (109) is provided with a cavity (1091);

the control adapter plate (110) is positioned in the cavity (1091) and connected to the remote control host; the electric pin (108) is inserted into the cavity (1091) and electrically connected with the control adapter plate (110), and the electric pin (108) is in insulated connection with the heat dissipation seat (109);

the electric needle (108) is also electrically connected with the photoelectric detection system and the dew point refrigerating system; the cooling surface that refrigeration structure (107) was equipped with connect in heat dissipation seat (109).

9. Dew point detector as claimed in claim 8, characterized in that the cavity (1091) is filled with a sealing agent to seal the cavity (1091) from gases outside the cavity (1091).

10. A dew point detector as claimed in claim 8 or 9, characterised in that the dew point cooling system is arranged on the upper surface of the heat sink (109), the photoelectric detection system comprising a photoelectric detection device (101) and a detection cover (102);

after the lower surface of the detection cover body (102) is upwards sunken and a part of structure is removed, a detection cavity is formed between the side wall and the top of the detection cover body (102);

the photoelectric detection device (101) is arranged on the top of the detection cover body (102);

after the detection cover body (102) is installed on the heat dissipation seat (109), the dew point refrigeration system is located in the detection cavity.

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