CN113566996A - Double-branch automatic switching temperature transmitter - Google Patents

Abstract

The invention discloses a double-branch automatic switching temperature transmitter which comprises a control box, wherein the bottom of the control box is connected with a protective pipe, two groups of thermal resistors penetrate through the protective pipe, through holes are formed in two sides of the lower part of the protective pipe, the lower part of the protective pipe is connected with a mounting frame, detection pipes are hinged to the two groups of mounting frames through pin shafts, the two groups of thermal resistors penetrate through the two groups of through holes respectively and are inserted into the two groups of detection pipes, the two groups of detection pipes are connected through an adjusting telescopic rod, a processing unit is arranged at the lower part in the control box, a mounting rod is fixedly connected to the top wall of the control box, a heat dissipation fan is mounted on the mounting rod, and heat dissipation holes are formed in two sides of the control box; through setting up two sets of sense tubes, can adjust the distance between two sets of sense tubes through adjusting the telescopic link, be convenient for detect the temperature of different positions department, guarantee the detection effect to the temperature, when the temperature is higher, dispel the heat to control box inside through the heat dissipation fan, when the temperature is normal, seal the louvre, can avoid inside the dust entering control box.

Description

Double-branch automatic switching temperature transmitter

Technical Field

The invention relates to the technical field of temperature transmitters, in particular to a double-branch automatic switching temperature transmitter.

Background

The temperature transmitter is an instrument which converts temperature variable into transmittable standardized output signal, mainly used for measuring and controlling temperature parameter of industrial process, the current transmitter is used for converting alternating current of main loop to be measured into constant current loop standard signal, continuously transmitting to the receiving device, the temperature current transmitter is used for converting signal of temperature sensor into current signal, connecting to secondary instrument, thereby displaying corresponding temperature.

Current temperature transmitter generally can only detect the temperature of a position department, when the temperature to different positions department detects the contrast as needs, then need use two temperature transmitter to detect, lead to comparatively inconvenient to the detection of temperature, and temperature transmitter uses a period back simultaneously, and inside temperature can rise, and only relies on the heat dissipation of temperature transmitter self, is difficult to distribute away heat whole, can lead to temperature transmitter's life to reduce.

Based on the above, the invention designs a dual-branch automatic switching temperature transmitter to solve the above mentioned problems.

Disclosure of Invention

The invention aims to provide a double-branch automatic switching temperature transmitter, which is characterized in that two groups of detection tubes are arranged, the distance between the two groups of detection tubes can be adjusted by adjusting a telescopic rod, so that the temperature at different positions can be conveniently detected, the detection effect on the temperature is ensured, when the temperature is higher, the inside of a control box is radiated by a radiation fan, the radiation effect is good, when the temperature is normal, a radiation hole is sealed, dust can be prevented from entering the inside of the control box, and the problems in the background art are solved.

In order to achieve the purpose, the invention provides the following technical scheme: two automatic switch-over temperature transmitters, including the control box, the control box bottom is connected with the protecting tube, there are two sets of thermal resistance to pass in the protecting tube, the through-hole has all been opened to protecting tube lower part both sides, the equal fixedly connected with mounting bracket in protecting tube lower part both sides is two sets of all there is the detection tube through the round pin axle articulated on the mounting bracket, and is two sets of the thermal resistance passes two sets of through-holes respectively and inserts in two sets of detection tubes, and is two sets of be connected through adjusting the telescopic link between the detection tube, the lower part is equipped with the processing unit in the control box, roof fixedly connected with installation pole in the control box, install the heat dissipation fan on the installation pole, the louvre has all been opened to the control box both sides.

Preferably, the front side of the control box is provided with a display screen, and the lower part of the front side of the control box is provided with an adjusting button.

Based on the technical characteristics, the detection result is displayed through the display screen, and the adjustment can be performed through the adjusting button.

Preferably, the top wall is equipped with thermodetector and controller in the control box, the equal fixedly connected with electric telescopic handle in top wall both sides in the control box, two sets of the equal fixedly connected with closing plate in electric telescopic handle bottom, two sets of the closing plate is corresponding with two sets of louvres respectively.

Based on the technical characteristics, when the temperature is too high, the controller controls the electric telescopic rod to contract.

Preferably, the temperature detector is electrically connected with the controller, the controller is controlled to be connected with the electric telescopic rod and the heat dissipation fan, and the sealing gaskets are bonded on the outer sides of the two groups of sealing plates.

Based on the technical characteristics, the sealing performance of the radiating hole is ensured.

Preferably, the heat dissipation fan is located right above the processing unit.

Based on the technical characteristics, the heat dissipation effect on the processing unit is good.

Preferably, adjust the telescopic link and include the outer pole, the outer pole is articulated mutually with one of them group's test tube, it has interior pole to peg graft in the outer pole, interior pole passes the outer pole and articulates mutually with another group's test tube, it has the multiunit draw-in groove to open on the interior pole, it has the bayonet lock to pass on the outer pole, the bayonet lock cooperatees with the draw-in groove.

Based on the technical characteristics, the distance between the two groups of detection tubes can be adjusted by adjusting the telescopic rod.

Preferably, the processing unit comprises a voltage stabilizing filter module, an operational amplification module, a nonlinear correction module, a voltage-current conversion module and a constant current and reverse protection module, two groups of the thermal resistors are electrically connected with the voltage stabilizing filter module, the operational amplification module, the nonlinear correction module, the voltage-current conversion module and the constant current and reverse protection module are electrically connected in sequence, and the voltage-current conversion module is electrically connected with the display screen.

Based on the technical characteristics, the signals are processed through the processing unit, and the processing result is displayed through the display screen.

The use method of the temperature transmitter comprises the following steps:

s1, when the telescopic type temperature detection device is used, the clamping pin is pulled out according to use requirements, the length of the telescopic rod is adjusted, the telescopic rod is adjusted to drive the two groups of detection tubes to move, the two groups of detection tubes rotate around the pin shaft, the distance between the two groups of detection tubes can be adjusted, the temperatures at different positions can be conveniently detected, and after the adjustment is completed, the length of the telescopic rod is fixed through the clamping pin;

s2, detecting temperature through a thermal resistor in a detection pipe, outputting a signal to a voltage stabilizing and filtering module through the thermal resistor, performing voltage stabilizing and filtering processing on the signal through the voltage stabilizing and filtering module, performing operational amplification on the signal through the operational amplification module, performing correction processing on the signal through a nonlinear correction module, converting voltage and current through a voltage and current conversion module, and displaying an operation result through a display screen on a control box, wherein the constant current and reverse protection module can play a role in protection;

s3, along with the increase of the service time, the working time of the processing unit increases, the heat generated by the processing unit increases, the temperature in the control box gradually rises, the temperature detector detects the temperature in the control box, when the temperature in the control box reaches a certain value, the temperature detector sends a signal to the controller, the controller controls the heat dissipation fan to start, the controller controls the electric telescopic rod to contract, the electric telescopic rod drives the sealing plate and the sealing pad to move upwards, the sealing pad is separated from the heat dissipation hole, the heat is dissipated out through the heat dissipation hole under the action of the heat dissipation fan, the service life of the processing unit is ensured, when the temperature in the control box decreases to a certain value, the temperature detector sends a signal to the controller, the controller controls the heat dissipation fan to close, the electric telescopic rod is controlled to extend, and the electric telescopic rod drives the sealing plate and the sealing pad to return to the initial position, the heat dissipation holes are sealed, and external dust is prevented from entering the control box.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, by arranging the two groups of detection tubes, the distance between the two groups of detection tubes can be adjusted by adjusting the telescopic rod, so that the temperature at different positions can be conveniently detected, the detection effect on the temperature is ensured, when the temperature is higher, the inside of the control box is radiated by the radiation fan, the radiation effect is good, when the temperature is normal, the radiation holes are sealed, and dust can be prevented from entering the inside of the control box.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the control box according to the present invention;

FIG. 3 is a schematic view of the internal structure of the protection tube according to the present invention;

FIG. 4 is a schematic view of the structure of the adjusting telescopic rod of the present invention;

FIG. 5 is a block diagram of a processing unit according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution of a dual-branch automatic switching temperature transmitter: the device comprises acontrol box 1, aprotective pipe 2, two groups ofthermal resistors 18, athrough hole 19, a mounting frame 3, a detection pipe 5, a telescopic adjusting rod 6, aprocessing unit 9, amounting rod 11, aheat dissipation fan 10 andheat dissipation holes 17; through adjusting the length of adjusting telescopic link 6 to adjust the distance between two sets of detecting tubes 5, be convenient for detect the temperature of different positions department, whencontrol box 1 internal temperature was too high, under the effect ofheat dissipation fan 10, the heat distributes away vialouvre 17, guarantees the life ofprocessing unit 9.

The front side of thecontrol box 1 is provided with a display screen 7, an operation result is displayed through the display screen 7 on thecontrol box 1, and the lower part of the front side of thecontrol box 1 is provided with an adjusting button 8; theheat dissipation fan 10 is located right above theprocessing unit 9, and has a good heat dissipation effect on theprocessing unit 9.

The inner top wall of thecontrol box 1 is provided with atemperature detector 12 and acontroller 13, two sides of the inner top wall of thecontrol box 1 are fixedly connected with electrictelescopic rods 14, the bottom ends of the two groups of electrictelescopic rods 14 are fixedly connected withsealing plates 15, and the two groups ofsealing plates 15 respectively correspond to the two groups ofheat dissipation holes 17; the electric connection between thetemperature detector 12 and thecontroller 13, thecontroller 13 controls and connects the electrictelescopic rod 14 and theheat dissipation fan 10, two sets ofsealing plates 15 are bonded withsealing gaskets 16 on the outer sides, when the temperature in thecontrol box 1 reaches a certain value, thetemperature detector 12 sends a signal to thecontroller 13, thecontroller 13 controls theheat dissipation fan 10 to start, thecontroller 13 controls the electrictelescopic rod 14 to contract, the electrictelescopic rod 14 drives thesealing plates 15 and thesealing gaskets 16 to move upwards, thesealing gaskets 16 are separated from theheat dissipation holes 17, under the action of theheat dissipation fan 10, heat is dissipated through theheat dissipation holes 17, the service life of theprocessing unit 9 is ensured, when the temperature in thecontrol box 1 is reduced to a certain value, thetemperature detector 12 sends a signal to thecontroller 13, thecontroller 13 controls theheat dissipation fan 10 to close, and controls the electrictelescopic rod 14 to extend, the electrictelescopic rod 14 drives thesealing plates 15 and thesealing gaskets 16 to return to the initial positions, theheat dissipation holes 17 are sealed to prevent external dust from entering thecontrol box 1.

Referring to fig. 4, the adjusting telescopic rod 6 includes anouter rod 61, theouter rod 61 is hinged to one of the detecting tubes 5, aninner rod 62 is inserted into theouter rod 61, theinner rod 62 passes through theouter rod 61 and is hinged to the other detecting tube 5, a plurality of sets ofslots 63 are formed in theinner rod 62, abayonet 64 passes through theouter rod 61, thebayonet 64 is matched with theslots 63, thebayonet 64 is pulled out according to use requirements, the length of the adjusting telescopic rod 6 is adjusted, and accordingly the distance between the two detecting tubes 5 is adjusted.

Referring to fig. 5, theprocessing unit 9 includes a voltage stabilizingfilter module 91, anoperational amplifier module 92, anon-linear correction module 93, a voltage-current conversion module 94, and a constant current andreverse protection module 95, two sets of thethermal resistors 18 are electrically connected to the voltage stabilizingfilter module 91, the voltage-stabilizingfiltering module 91, theoperational amplification module 92, thenonlinear correction module 93, the voltage-current conversion module 94 and the constant-current andreverse protection module 95 are electrically connected in sequence, thethermal resistor 18 outputs a signal to the voltage-stabilizingfiltering module 91, the voltage-stabilizingfiltering module 91 performs voltage-stabilizing filtering processing on the signal, theoperational amplification module 92 performs operational amplification on the signal, thenonlinear correction module 93 performs correction processing on the signal, the voltage-current conversion module 94 converts voltage and current, the constant-current andreverse protection module 95 can play a role in protection, and the voltage-current conversion module 94 is electrically connected with the display screen 7.

The specific working principle is as follows:

s1, when the telescopic temperature detection device is used, theclamping pin 64 is pulled out according to use requirements, the length of the telescopic rod 6 is adjusted, the telescopic rod 6 is adjusted to drive the two groups of detection tubes 5 to move, the two groups of detection tubes 5 rotate around the pin shaft 4, the distance between the two groups of detection tubes 5 can be adjusted, the temperature at different positions can be conveniently detected, and after the adjustment is completed, the length of the telescopic rod 6 is fixed through theclamping pin 64;

s2, the temperature is detected through thethermal resistor 18 in the detection tube 5, thethermal resistor 18 outputs signals to the voltage-stabilizingfilter module 91, the voltage-stabilizingfilter module 91 performs voltage-stabilizing filter processing on the signals, theoperational amplification module 92 performs operational amplification on the signals, thenonlinear correction module 93 performs correction processing on the signals, the voltage-current conversion module 94 converts the voltage and the current, the constant-current andreverse protection module 95 can play a role in protection, and the operation result is displayed through the display screen 7 on thecontrol box 1;

s3, along with the increase of the service time, the working time of theprocessing unit 9 increases, the heat generated by theprocessing unit 9 increases, the temperature in thecontrol box 1 gradually increases, thetemperature detector 12 detects the temperature in thecontrol box 1, when the temperature in thecontrol box 1 reaches a certain value, thetemperature detector 12 sends a signal to thecontroller 13, thecontroller 13 controls theheat dissipation fan 10 to start, thecontroller 13 controls the electrictelescopic rod 14 to contract, the electrictelescopic rod 14 drives thesealing plate 15 and the sealinggasket 16 to move upwards, the sealinggasket 16 is separated from theheat dissipation hole 17, under the action of theheat dissipation fan 10, the heat is dissipated through theheat dissipation hole 17, the service life of theprocessing unit 9 is ensured, when the temperature in thecontrol box 1 decreases to a certain value, thetemperature detector 12 sends a signal to thecontroller 13, thecontroller 13 controls theheat dissipation fan 10 to close, and controls the electrictelescopic rod 14 to extend, the electrictelescopic rod 14 drives thesealing plate 15 and the sealinggasket 16 to return to the initial position, theheat dissipation holes 17 are sealed, and external dust is prevented from entering thecontrol box 1.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (8)

1. Two automatic switch-over temperature transmitter, including control box (1), its characterized in that: the bottom of the control box (1) is connected with a protective tube (2), two groups of thermal resistors (18) penetrate through the protective tube (2), both sides of the lower part of the protective pipe (2) are provided with through holes (19), both sides of the lower part of the protective pipe (2) are fixedly connected with mounting frames (3), two groups of the mounting frames (3) are hinged with detection pipes (5) through pin shafts (4), two groups of the thermal resistors (18) respectively penetrate through the two groups of the through holes (19) and are inserted into the two groups of the detection pipes (5), the two groups of the detection pipes (5) are connected through adjusting telescopic rods (6), a processing unit (9) is arranged at the lower part in the control box (1), the top wall in the control box (1) is fixedly connected with a mounting rod (11), the mounting rod (11) is provided with a heat dissipation fan (10), and heat dissipation holes (17) are formed in two sides of the control box (1).

2. The dual branch automatic switching temperature transmitter of claim 1, wherein: the front side of the control box (1) is provided with a display screen (7), and the lower part of the front side of the control box (1) is provided with an adjusting button (8).

3. The dual branch automatic switching temperature transmitter of claim 1, wherein: roof is equipped with thermodetector (12) and controller (13) in control box (1), roof both sides equal fixedly connected with electric telescopic handle (14) in control box (1), two sets of electric telescopic handle (14) bottom equal fixedly connected with closing plate (15), two sets of closing plate (15) are corresponding with two sets of louvre (17) respectively.

4. The dual branch automatic switching temperature transmitter of claim 3, wherein: the temperature detector (12) is electrically connected with the controller (13), the controller (13) controls and is connected with the electric telescopic rod (14) and the heat dissipation fan (10), and the outer sides of the two groups of sealing plates (15) are both bonded with sealing gaskets (16).

5. The dual branch automatic switching temperature transmitter of claim 1, wherein: the heat dissipation fan (10) is positioned right above the processing unit (9).

6. The dual branch automatic switching temperature transmitter of claim 1, wherein: adjust telescopic link (6) including outer pole (61), outer pole (61) are articulated mutually with a set of detection tube (5) wherein, it has interior pole (62) to peg graft in outer pole (61), interior pole (62) pass outer pole (61) and articulate mutually with another group detection tube (5), it has multiunit draw-in groove (63) to open on interior pole (62), it has bayonet lock (64) to pass on outer pole (61), bayonet lock (64) cooperate with draw-in groove (63).

7. The dual branch automatic switching temperature transmitter of claim 1, wherein: the processing unit (9) comprises a voltage stabilizing filter module (91), an operational amplification module (92), a nonlinear correction module (93), a voltage-current conversion module (94) and a constant current and reverse protection module (95), two groups of thermal resistors (18) are electrically connected with the voltage stabilizing filter module (91), the operational amplification module (92), the nonlinear correction module (93), the voltage-current conversion module (94) and the constant current and reverse protection module (95) are sequentially electrically connected, and the voltage-current conversion module (94) is electrically connected with the display screen (7).

8. The dual branch automatic switching temperature transmitter of claims 1-7, wherein: the use method of the temperature transmitter comprises the following steps:

s1, during the use, according to the use needs, extract bayonet lock (64), adjust the length of adjusting telescopic link (6), adjust telescopic link (6) and drive two sets of detecting tube (5) motion, two sets of detecting tube (5) rotate round pin axle (4), can adjust the distance between two sets of detecting tube (5), be convenient for detect the temperature of different positions department, adjust the completion back, fix the length of adjusting telescopic link (6) through bayonet lock (64).

S2, the temperature is detected through a thermal resistor (18) in a detection tube (5), the thermal resistor (18) outputs a signal to a voltage stabilization filtering module (91), the voltage stabilization filtering module (91) performs voltage stabilization filtering processing on the signal, an operational amplification module (92) performs operational amplification on the signal, a nonlinear correction module (93) performs correction processing on the signal, a voltage and current conversion module (94) converts voltage and current, a constant current and reverse protection module (95) can play a role in protection, and an operation result is displayed through a display screen (7) on a control box (1).

S3, along with the increase of the service time, the working time of the processing unit (9) is increased, the heat generated by the processing unit (9) becomes more, the temperature in the control box (1) gradually rises, the temperature detector (12) detects the temperature in the control box (1), when the temperature in the control box (1) reaches a certain value, the temperature detector (12) sends a signal to the controller (13), the controller (13) controls the heat dissipation fan (10) to start, meanwhile, the controller (13) controls the electric telescopic rod (14) to shrink, the electric telescopic rod (14) drives the sealing plate (15) and the sealing gasket (16) to move upwards, the sealing gasket (16) is separated from the heat dissipation hole (17), under the action of the heat dissipation fan (10), the heat is dissipated through the heat dissipation hole (17), the service life of the processing unit (9) is ensured, when the temperature in the control box (1) is reduced to a certain value, thermodetector (12) signals for controller (13), and controller (13) control heat dissipation fan (10) are closed, and control electric telescopic handle (14) extension simultaneously, electric telescopic handle (14) drive closing plate (15) and sealed pad (16) get back to initial position, seal louvre (17), avoid outside dust to get into inside control box (1).

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