A kind of high performance gas absorption cellTechnical field
The utility model is related to a kind of absorption cell, more particularly to a kind of high performance gas absorption cell.
Background technology
Gas absorption cell include polytype, have traditional White White pond, Herriott Maurice Herriotts pond, matrix type withAnd the structure and principle of the absorption cell such as their modified, it is to be swashed based on optical gas absorbance pond in tunable semiconductor that it, which develops,Answering in light device absorption spectroscopy techniques (Tunable DiodeLaser Absorption Spectroscopy, TDLAS) fieldWith and development, according to the growth requirement of TDLAS technologies, current gas absorption cell is provided with long light path, miniaturization, easy to operate, heightStability and the development trend for measuring multiple gases simultaneously, hair of the bibliography optical gas absorbance pond in absorption spectroscopy techniquesExhibition and application, TDLAS technologies were developed rapidly in recent years, and the gas detecting system based on the technique construction has highly sensitiveThe advantages of degree, high accuracy, fast reaction, it is widely used to the necks such as gas detection, industrial stokehold, discharge of pollutant sources detectionDomain, is strongly releasing high performance gas absorption cell, particularly Herriott ponds, to comply with the hair in market both at home and abroad at presentExhibition, long path cell be mainly used in AIR POLLUTION STUDY, environmental monitoring, gas purity analysis, industrial processes monitoring,The field such as discharge gas analysis and oil exploration geological logging process monitoring, by Shockproof base, pond body, concave mirror, planeSpeculum, window, standard fiber optic connector, gas inlet and outlet, heating tape, temperature sensor and pressure sensor etc. are constituted, by pondBody Shockproof base is arranged in instrument box, and under test gas enters gas cell by gas feed, is discharged by outlet, and light is by treatingSpectrometer analysis are entered by optical fiber after survey gas, absorption spectrum is reduced compared to original background spectrum, according to Lambert-Beer absorption laws measure the concentration of gas, and order of reflection of the light in pond body depends on pond body length, optical path length and phaseThe optical design of pass.
Still there are many not enough places on the basis of the technical conditions of existing gas absorption cell, gas absorption cell is madeFor the core devices of infrared gas detection technology, suitable light path size can not be reasonably selected when using, causes the standard of testTrue property declines, and the closure simultaneously for air chamber is not strong, and gas leakage is caused sometimes, certain potential safety hazard, tail is there isFibre output does not adapt to different light path absorption cells, very inconvenient, while among the process in test, temperature and pressure are allIt is not easy to be controlled, causes the structure of test to be forbidden, need to repeatedly test, increase the working time, reduce operating efficiency.
Utility model content
The technical problems to be solved in the utility model is that the defect for overcoming prior art absorbs there is provided a kind of high performance gasPond.
In order to solve the above-mentioned technical problem, the utility model provides following technical scheme：
A kind of high performance gas absorption cell of the utility model, including absorption cell body, the inside of the absorption cell body is setTransparent air chamber is equipped with, one end of the transparent air chamber is provided with heating ring, and the bottom of the transparent air chamber is provided with protractor, instituteThe two ends for stating transparent air chamber are provided with double-layer seal rings, the protractor and are provided with temperature display port, and the temperature showsShow that the bottom of port is provided with control flume, one end of the absorption cell body is provided with standby rotation circle, the standby rotation circleBe internally provided with some aperture joints, the standby rotation circle is internally provided with rotary shaft, the one of the standby rotation circleSide is provided with inlet suction port.
As a kind of optimal technical scheme of the present utility model, the bottom of the absorption cell body is provided with firm banking,The avris of the absorption cell body is provided with some support columns.
As a kind of optimal technical scheme of the present utility model, pressure device, the air inlet are provided with the inlet suction portThe side of joint is provided with light source collimater.
As a kind of optimal technical scheme of the present utility model, the standby rotation circle passes through rotary shaft with absorption cell bodyIt is flexibly connected.
As a kind of optimal technical scheme of the present utility model, the heating ring is electrically connected with protractor.
Compared with prior art, the beneficial effects of the utility model are as follows：
The utility model is a kind of high performance gas absorption cell, the size of rational selection light path, can efficiently build inspectionPlatform is surveyed, this product is formed using special collimation lens assembling, and tail optical fiber output can flexibly constitute the absorption of different light pathsPond, double-layer seal preferably can prevent gas from leaking, it is ensured that the accuracy and safe operation of test, while in test process pairTemperature, pressure can be carried out controlling at any time, while also replaceable different light path interface, effectively raises the accurate of testRate, the design is rationally, simple to operate, convenient and practical, effectively raises operating efficiency, very convenient.
Brief description of the drawings
Accompanying drawing is used for providing further understanding to of the present utility model, and constitutes a part for specification, with this practicalityNew embodiment is used to explain the utility model together, does not constitute to limitation of the present utility model.In the accompanying drawings：
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is partial structural diagram of the present utility model；
Fig. 3 is internal structure schematic diagram of the present utility model；
In figure：1st, absorption cell body；2nd, transparent air chamber；3rd, support column；4th, standby rotation circle；5th, pressure device；6th, light source is accurateStraight device；7th, inlet suction port；8th, mounting seat；9th, protractor；10th, heating ring；11st, aperture joint；12nd, rotary shaft；13rd, temperature showsShow port；14th, control flume；15th, double-layer seal rings.
Embodiment
Preferred embodiment of the present utility model is illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein excellentSelect embodiment to be merely to illustrate and explain the utility model, be not used to limit the utility model.
Embodiment 1
As Figure 1-3, the utility model provides a kind of high performance gas absorption cell, including absorption cell body 1, absorption cellBody 1 is internally provided with transparent air chamber 2, and one end of transparent air chamber 2 is provided with heating ring 10, the bottom of transparent air chamber 2 is setThere is protractor 9, the two ends of transparent air chamber 2, which are provided with double-layer seal rings 15, protractor 9, is provided with temperature display port 13,The bottom of temperature display port 13 is provided with control flume 14, and one end of absorption cell body 1 is provided with standby rotation circle 4, standby rotationTurn-take 4 some aperture joints 11 that are internally provided with, standby rotation circle 4 is internally provided with rotary shaft 12, standby rotation circle 4Side is provided with inlet suction port 7.
Further, the bottom of absorption cell body 1 is provided with firm banking 8, and the avris of absorption cell body 1 is provided with someSupport column 3, firm banking 8 and support column 3 can make whole test keep stable during test, it is ensured that test it is accurateProperty.
Pressure device 5 is provided with the inlet suction port 7, the side of inlet suction port 7 is provided with light source collimater 6, passes through pressurePower device 5 understands the pressure in test process, and light source collimater 6 causes collimated light source light due to factors such as collimated light source manufacture installationsThe initial position of axle is uncertain, needs collimation light source optical axis to point to positioning adjustment.
Standby rotation circle 4 is flexibly connected with absorption cell body 1 by rotary shaft 12, and standby rotation circle 4 passes through rotary shaft 12The replaceable different aperture joint 11 of rotation is carried out to adapt to different light path absorption cells, it is practical for standby with changing.
Heating ring 10 is electrically connected with protractor 9, can carry out heating control to heating ring 10 by temperature 9, simple to operateIt is convenient, it can control at any time.
Specifically, the utility model is during use, mounting seat 8 ensures steady in test process with support column 3It is fixed, gas can be imported in the connection of inlet suction port 7 testing and debugging is carried out by pressure device 5, pressure device 5 and protractor 9 can be passed throughSolution temperature and pressure during test, while trip temperature can be entered to heating ring 10 by the control flume 14 on protractor 9Regulation and control, improve test quality and accuracy rate, can be sealed when test by double-layer seal rings 15, prevent gas leakage,Rotation is carried out by rotary shaft 12 in the aperture joint 11 among the process of test on available backup rotation circle 4 and changes different lightJoint 11 is enclosed to test different light paths, it is very convenient.
The utility model is a kind of high performance gas absorption cell, the size of rational selection light path, can efficiently build inspectionPlatform is surveyed, this product is formed using special collimation lens assembling, and tail optical fiber output can flexibly constitute the absorption of different light pathsPond, double-layer seal preferably can prevent gas from leaking, it is ensured that the accuracy and safe operation of test, while in test process pairTemperature, pressure can be carried out controlling at any time, while also replaceable different light path interface, effectively raises the accurate of testRate, the design is rationally, simple to operate, convenient and practical, effectively raises operating efficiency, very convenient.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, this is not limited toUtility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the artFor, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristicCarry out equivalent substitution.It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc.,It should be included within protection domain of the present utility model.