CN206074445U - Low noise optical measurement pond - Google Patents
Low noise optical measurement pond Download PDFInfo
- Publication number
- CN206074445U CN206074445U CN201621061381.5U CN201621061381U CN206074445U CN 206074445 U CN206074445 U CN 206074445U CN 201621061381 U CN201621061381 U CN 201621061381U CN 206074445 U CN206074445 U CN 206074445U
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- CN
- China
- Prior art keywords
- heat
- support plate
- square tube
- insulated support
- shell
- Prior art date
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- Expired - Fee Related
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Low noise optical measurement pond, including shell, shell inner bottom part is sequentially provided with collimator from left to right, left heat-insulated support plate, right heat-insulated support plate and reflector, collimator is provided with the detector at light transmitting terminal, a square tube is placed with left heat-insulated support plate and right heat-insulated support plate, the penetrating optics air chamber in left and right is offered inside square tube, the circular in cross-section structure of optics air chamber, square tube left side and right side are obliquely installed a prism wedge, the heat-preservation cotton that square tube is externally provided with heating tube and is wrapped in heating tube outside square tube, the bottom correspondence of square tube and shell offers the gas outlet of the air inlet and neighbouring right heat-insulated support plate of neighbouring left heat-insulated support plate.This utility model can effectively eliminate etalon effect, the signal noise ratio level of system is effectively improved, heater can be reduced to the heat transfer of the optics air chamber in square tube to around shell and detector, disturbance is produced to light path, effectively veiling glare can be separated simultaneously, veiling glare is prevented from reaching at detector.
Description
Technical field
This utility model belongs to gas concentration measurement technical field, more particularly to a kind of low noise optical measurement pond.
Background technology
At present, one kind weight for realizing gas concentration measurement is had become based on the theoretical TDLAS technologies of molecular absorption spectrum
Method is wanted, there is noncontact, high sensitivity, high-resolution and high selectivity and can be with real-time monitoring.In escape ammonia
Context of detection, the analysis meter for being also based on TDLAS technologies state-of-the-art at this stage.The laser method of TDLAS technologies is according to sharp
The absorption signal of light, generally uses planar lens in the design of optical measurement pond in the method and seals, meeting when planar lens is sealed
Etalon effect is produced, etalon effect can produce the optical noise of similar GAS ABSORPTION, affect the measurement performance of instrument.And reflect
Light can produce many veiling glares in inwall multiple reflections, and measurement signal can be affected when being irradiated to detector, affect effective light letter
Number measurement.In addition, it is poor to the heat insulation effect after the heating of optical measurement pond, cause to test effect on driving birds is not good.
Utility model content
This utility model is in order to solve weak point of the prior art, there is provided it is a kind of for escape ammonia analyser, disappear
Except etalon effect, the low noise optical measurement pond of high insulating effect.
To solve above-mentioned technical problem, this utility model is adopted the following technical scheme that：Low noise optical measurement pond, including being in
The shell of rectangular shape, shell inner bottom part are sequentially provided with collimator, left heat-insulated support plate, right heat-insulated support plate and reflection from left to right
Device, collimator are provided with the detector at light transmitting terminal, and on left heat-insulated support plate and right heat-insulated support plate, left and right is correspondingly arranged
One mounting groove, is placed with a square tube in two mounting grooves, the penetrating optics air chamber in left and right, optics gas are offered inside square tube
The circular in cross-section structure of room, square tube left side and right side are obliquely installed a prism wedge, and square tube is externally provided with heating
Manage and the bottom correspondence that heating tube is wrapped in the heat-preservation cotton outside square tube, square tube and shell is offered into neighbouring left heat-insulated support plate
The gas outlet of air inlet and neighbouring right heat-insulated support plate.
Reflector includes the fixed seat for being located at outer casing bottom, is connected with reflecting mirror by extension spring on front side of fixed seat, Gu
The adjusting screw being threaded with reservation around extension spring, left end and the reflecting mirror right flank top pressure of adjusting screw connect
Touch.
Using above-mentioned technical proposal, this utility model has following technique effect：
1st, optics air chamber two ends arrange prism wedge, and the laser of collimator transmitting on the one hand can be avoided to return along original optical path
Return, produce interference effect, so as to effectively eliminate etalon effect, on the other hand can change the path of the veiling glare of inwall generation
Which is prevented from reaching detector, so as to effectively improve the signal noise ratio level of system.
2nd, using left heat-insulated support plate and right heat-insulated support plate, heat transfer of the heater to the optics air chamber in square tube can be reduced
To around shell and detector, disturbance is produced to light path, while effectively can separate veiling glare, veiling glare is prevented from reaching spy
Survey at device.
3rd, gas is entered by air inlet, is discharged by gas outlet, heating tube and square tube is thermally shielded using heat-preservation cotton, can be made
The gas of the optics air chamber being passed through in square tube keeps uniform temperature, contributes to lifting Detection results.
4th, reflector is easy to make light using being adjusted the angle of reflecting mirror reflection light by turning adjusting screw
Line reflection fully lifts the convenience of test to detector.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
As shown in figure 1, low noise optical measurement pond of the present utility model, including the shell 1 in rectangular shape, shell 1
Inner bottom part is sequentially provided with collimator 2, left heat-insulated support plate 3, right heat-insulated support plate 4 and reflector from left to right, and collimator 2 is provided with position
On detector 6 at light transmitting terminal, left heat-insulated support plate 3 and right heat-insulated support plate 4, left and right is correspondingly arranged a mounting groove, two
A square tube 7 is placed with mounting groove, the penetrating optics air chamber 8 in left and right, the cross section of optics air chamber 8 inside square tube 7, is offered
Rounded structure, 7 left side of square tube and right side are obliquely installed a prism wedge 9, and square tube 7 is externally provided with heating tube 10 and incites somebody to action
Heating tube 10 is wrapped in the bottom correspondence of the heat-preservation cotton 11 outside square tube 7, square tube 7 and shell 1 and offers neighbouring left heat-insulated support plate 3
Air inlet 12 and neighbouring right heat-insulated support plate 4 gas outlet 13.
Reflector includes the fixed seat 14 for being located at 1 bottom of shell, is connected with instead by extension spring 15 on front side of fixed seat 14
Penetrate mirror 16, the adjusting screw 17 being threaded with fixed seat 14 around extension spring 15, the left end of adjusting screw 17 with
16 right flank top pressure of reflecting mirror is contacted.
8 two ends of optics air chamber arrange prism wedge 9, and the laser of the transmitting of collimator 2 on the one hand can be avoided to return along original optical path
Return, produce interference effect, so as to effectively eliminate etalon effect, on the other hand can change the path of the veiling glare of inwall generation
Which is prevented from reaching detector 6, so as to effectively improve the signal noise ratio level of system.
Using left heat-insulated support plate 3 and right heat-insulated support plate 4, heating of the heater to the optics air chamber 8 in square tube 7 can be reduced and passed
Lead around shell 1 and detector 6, disturbance is produced to light path, while effectively can separate veiling glare, veiling glare is prevented from arriving
Up at detector 6.
Gas is entered by air inlet 12, is discharged by gas outlet 13, using heat-preservation cotton 11 heating tube 10 and square tube 7 are carried out every
Heat, can make the gas of the optics air chamber 8 being passed through in square tube 7 keep uniform temperature, contribute to lifting Detection results.
Reflector is easy to make using being adjusted the angle of 16 reflection light of reflecting mirror by turning adjusting screw 17
Light reflexes to detector 6, fully lifts the convenience of test.
The present embodiment not makees any pro forma restriction, every foundation to shape of the present utility model, material, structure etc.
Any simple modification, equivalent variations and modification that technical spirit of the present utility model is made to above example, belong to this reality
With the protection domain of new technique scheme.
Claims (2)
1. low noise optical measurement pond, including the shell in rectangular shape, it is characterised in that：Shell inner bottom part from left to right according to
Secondary to be provided with collimator, left heat-insulated support plate, right heat-insulated support plate and reflector, collimator is provided with the detection at light transmitting terminal
On device, left heat-insulated support plate and right heat-insulated support plate, left and right is correspondingly arranged a mounting groove, and a square tube is placed with two mounting grooves,
The penetrating optics air chamber in left and right, the circular in cross-section structure of optics air chamber, square tube left side and right-hand member are offered inside square tube
Face is obliquely installed a prism wedge, and square tube is externally provided with heating tube and heating tube is wrapped in the heat-preservation cotton outside square tube, side
The bottom correspondence of pipe and shell offers the gas outlet of the air inlet and neighbouring right heat-insulated support plate of neighbouring left heat-insulated support plate.
2. low noise optical measurement pond according to claim 1, it is characterised in that：Reflector includes being located at outer casing bottom
Fixed seat, is connected with reflecting mirror by extension spring on front side of fixed seat, is threaded with around extension spring in fixed seat
Adjusting screw, the left end of adjusting screw contacted with reflecting mirror right flank top pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621061381.5U CN206074445U (en) | 2016-09-19 | 2016-09-19 | Low noise optical measurement pond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621061381.5U CN206074445U (en) | 2016-09-19 | 2016-09-19 | Low noise optical measurement pond |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206074445U true CN206074445U (en) | 2017-04-05 |
Family
ID=58438240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621061381.5U Expired - Fee Related CN206074445U (en) | 2016-09-19 | 2016-09-19 | Low noise optical measurement pond |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206074445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758920A (en) * | 2021-07-20 | 2021-12-07 | 北京新叶科技有限公司 | Ammonia escape monitoring device |
-
2016
- 2016-09-19 CN CN201621061381.5U patent/CN206074445U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758920A (en) * | 2021-07-20 | 2021-12-07 | 北京新叶科技有限公司 | Ammonia escape monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20190919 |