CN202815630U - Thermostatic control apparatus for measurement of laser gas analyzer - Google Patents
Thermostatic control apparatus for measurement of laser gas analyzer Download PDFInfo
- Publication number
- CN202815630U CN202815630U CN201220431470.XU CN201220431470U CN202815630U CN 202815630 U CN202815630 U CN 202815630U CN 201220431470 U CN201220431470 U CN 201220431470U CN 202815630 U CN202815630 U CN 202815630U
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- measurement
- sample cell
- gas sample
- temperature
- laser
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Abstract
The utility model discloses a thermostatic control apparatus for measurement of a laser gas analyzer, comprising a gas sample cell. One end of the gas sample cell is provided with an infrared laser, the other end is provided with a light receiver, and the signal output terminal of the light receiver is connected with an amplification circuit. The thermostatic control apparatus for measurement of a laser gas analyzer is characterized in that the gas sample cell and the amplification circuit are both disposed in an insulation housing, a plurality of heating members are also arranged in the insulation housing and are all distributed on a heat radiation board, and a temperature sensor is arranged on the insulating housing in an insertion manner. According to the utility model, the whole measurement system including the amplification circuit, the gas sample cell, etc. are positioned in an enclosed environment with a relative stable temperature, output power change of the infrared laser caused by temperature change is prevented, a stable signal is output, the light receiver stays in an environment with a relatively stable temperature, the interference of adverse factors such as thermal noise and temperature drift on the measurement is prevented, and the reliability of the measurement result is guaranteed.
Description
Technical field
The utility model relates to a kind of thermostatically-controlled equipment, the measuring thermostatically-controlled equipment of especially a kind of laser gas analyzer.
Background technology
In the industry production such as waste incineration, building materials, petrochemical complex, give off the gases such as a large amount of CO, CO2, its concentration and composition are playing an important role aspect the living environment quality of determining people.Correctly understand the effect of these molecules in environment, a comprehensively understanding just must be arranged the discharging of these molecules in the atmosphere, could provide on this basis corresponding prophylactico-therapeutic measures.Therefore need to measure accurately the CONCENTRATION DISTRIBUTION of these gases.The gas analyzer such as CO, CO2 sees through the dusty gas that is discharged in the atmosphere by laser just can obtain needed data.For this reason, people often make the concentration of measuring emission gases with the light penetrating apparatus at present.It is made of the optical receiver that arranges on infrared laser and its output light path.During measurement, luminous by infrared laser, by way of tested gas the time, produce resonance, thereby reflect the attenuation characteristic of bright dipping at optical receiver.But this device exists weak point, and is at first very faint because of the signal that optical receiver receives, and requires the enlargement factor of amplifying circuit large, and the signal noise of generation is also large; Secondly, be subjected to the impact of working environment, because working environment possibility very severe, especially temperature variation is larger on the impact of optical receiver and amplifying circuit, make the degree of accuracy of measurement that larger uncertainty (measurement parameter produces drift easily) be arranged, cause precision to have larger error.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of thermostatically-controlled equipment simple in structure, practical, easy to use for overcoming weak point of the prior art.
A kind of for the measuring thermostatically-controlled equipment of laser gas analyzer, include gas sample cell, one end of gas sample cell is provided with infrared laser, the other end is provided with optical receiver, the signal output part of optical receiver is connected with amplifying circuit, it is characterized in that: described gas sample cell, amplifying circuit all place in the insulating cover, also be provided with a plurality of heating elements in the described insulating cover, a plurality of heating elements are arranged on the heat sink, also are inserted with a temperature sensor on the insulating cover.
Insulating cover is made by the less insulation material of coefficient of heat conductivity.
Thermostatically-controlled equipment of the present utility model considers that summer in winter temperature variation is larger, and thermostatic control is more than 40 degree.
The utility model with respect to the beneficial effect of prior art is:
The whole measuring system such as amplifying circuit, gas sample cell is operated in the relatively stable enclosed environment of temperature, infrared laser (end of gas sample cell) can not cause because of temperature variation output power to change, thereby the signal of stable output, optical receiver (other end of gas sample cell) is in the relatively stable environment of temperature, avoid thermonoise and temperature to float and waited the interference of undesirable element to measuring, the reliability of assurance measurement result.Simultaneously, because tested gas temperature is constant, avoid tested gas because the molecule activity characteristic difference that temperature variation is brought causes the error of measurement result.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Referring to Fig. 1, be equipped with heating element 6, heat sink 5, temperature sensor 3 in the insulating cover 1, be equipped with temperature sensor 3 on the insulating cover 1.
During use, be equipped with heating element 6 in the insulating cover 1, this heating element distributes heat in the space of insulating cover 1 by heat sink 5, the accurate control system temperature of closed-loop feedback arrangement that heating element 6 and temperature sensor 3 consist of, assurance amplifying circuit 4, gas sample cell 2 are worked in an equilibrium temperature system.
Obviously, those skilled in the art can carry out various changes and modification to constant temperature measuring apparatus of the present utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (2)
1. measuring thermostatically-controlled equipment of laser gas analyzer, include gas sample cell, one end of gas sample cell is provided with infrared laser, the other end is provided with optical receiver, the signal output part of optical receiver is connected with amplifying circuit, it is characterized in that: described gas sample cell, amplifying circuit all place in the insulating cover, also be provided with a plurality of heating elements in the described insulating cover, a plurality of heating elements are arranged on the heat sink, also are inserted with a temperature sensor on the insulating cover.
2. the measuring thermostatically-controlled equipment of laser gas analyzer according to claim 1, it is characterized in that: insulating cover is made by the less insulation material of coefficient of heat conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220431470.XU CN202815630U (en) | 2012-08-28 | 2012-08-28 | Thermostatic control apparatus for measurement of laser gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220431470.XU CN202815630U (en) | 2012-08-28 | 2012-08-28 | Thermostatic control apparatus for measurement of laser gas analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202815630U true CN202815630U (en) | 2013-03-20 |
Family
ID=47874483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220431470.XU Expired - Lifetime CN202815630U (en) | 2012-08-28 | 2012-08-28 | Thermostatic control apparatus for measurement of laser gas analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202815630U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181953A (en) * | 2014-08-16 | 2014-12-03 | 山西森达源科技有限公司 | Temperature control system of laser device in laser online gas analyzer |
| CN104460749A (en) * | 2014-12-30 | 2015-03-25 | 力合科技（湖南）股份有限公司 | Gas chamber temperature control device for gas analyzer |
| CN106769861A (en) * | 2016-12-13 | 2017-05-31 | 上海仪电分析仪器有限公司 | A kind of flow cell body structure-improved for strengthening antijamming capability |
| CN109375673A (en) * | 2018-10-10 | 2019-02-22 | 中国科学院合肥物质科学研究院 | A kind of trace Fe device temperature holding control system |
-
2012
- 2012-08-28 CN CN201220431470.XU patent/CN202815630U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181953A (en) * | 2014-08-16 | 2014-12-03 | 山西森达源科技有限公司 | Temperature control system of laser device in laser online gas analyzer |
| CN104460749A (en) * | 2014-12-30 | 2015-03-25 | 力合科技（湖南）股份有限公司 | Gas chamber temperature control device for gas analyzer |
| CN106769861A (en) * | 2016-12-13 | 2017-05-31 | 上海仪电分析仪器有限公司 | A kind of flow cell body structure-improved for strengthening antijamming capability |
| CN109375673A (en) * | 2018-10-10 | 2019-02-22 | 中国科学院合肥物质科学研究院 | A kind of trace Fe device temperature holding control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |