CN203786066U - Portable hydrogen gas analysis meter - Google Patents
Portable hydrogen gas analysis meter Download PDFInfo
- Publication number
- CN203786066U CN203786066U CN201420013234.5U CN201420013234U CN203786066U CN 203786066 U CN203786066 U CN 203786066U CN 201420013234 U CN201420013234 U CN 201420013234U CN 203786066 U CN203786066 U CN 203786066U
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- CN
- China
- Prior art keywords
- portable hydrogen
- gas chamber
- analysis meter
- hydrogen gas
- thermistor
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Abstract
The utility model relates to a portable hydrogen gas analysis meter. The portable hydrogen gas analysis meter comprises a sampling system, a thermal conductivity cell, an amplifier and a display instrument; the portable hydrogen gas analysis meter is characterized in that the thermal conductivity cell comprises a measurement gas chamber and a reference gas chamber, the measurement gas chamber is provided with two thermistors R1 and R2 which are arranged in a gas circuit at the top of the measurement gas chamber, the reference gas chamber is a closed gas chamber and is provided with two thermistors R3 and R4, each thermistor is wound on a heat insulation core shaft by a platinum wire with the diameter of 0.02mm, and a thin glass pipe is sheathed outside each heat insulation core shaft. The portable hydrogen gas analysis meter has the advantages of high measurement precision, small volume, good stability and the like, can effectively solve the problems that a thermal conductivity method in the prior art can be easily influenced by air turbulence and the baseline drift caused by self-heating during working is caused.
Description
Technical field
The utility model relates to a kind of portable hydrogen analyser.
Background technology
Hydrogen is the common product during industrial gasses, chemical technology conventional in producing produced, also be the clean energy resource of tool potentiality from now on, so the whole process of modern industry has been followed in the use of hydrogen, also in the ascendant for the new production process of hydrogen and the research of storaging and transport technology.Yet due to the insecurity of hydrogen, make hydrogen gas sensor become indispensable equipment, only in production, experiment and use procedure, possess the monitoring means of fast and reliable, could effectively avoid dangerous.
The instrument of analyzing H2 is both at home and abroad of a great variety, and the analytical approach adopting is different.Analytical approach mainly contains following several, i.e. chromatography, electrochemical process, thermal conductivity method, and chromatography, because instrument volume is larger, need to assist steel cylinder gas to do carrier gas, staff's complex operation; Electrochemical process, because the term of validity use of sensor is shorter, is subject to CO, SO
2interference Deng gas; Thermal conductivity method, owing to having the features such as antijamming capability is strong, easy to operate, sensitivity is high, is the best approach of measuring hydrogen.Yet the technical matters of thermal conductivity method is to be easily subject to environment temperature and the impact of airflow fluctuation around, and the baseline wander problem of bringing of self-heating during working sensor, limited to a certain extent advantage and the popularization of thermal conductivity method instrument.
Utility model content
Technical problem to be solved in the utility model is the dark current problem of existing photomultiplier.
For this reason, the utility model discloses a kind of portable hydrogen analyser, it comprises sampling system, conductance cell, amplifier and Displaying Meter, it is characterized in that comprising and measuring air chamber and reference gas chamber at described conductance cell, and described measurement air chamber contains 2 thermistor R
1, R
2, be placed in the gas circuit of measuring air chamber top; Described measurement air chamber is sealed gas chamber, contains 2 thermistor R
3, R
4; Described thermistor is with diameter 0.02mm platinum filament on adiabatic mandrel, and outside cover thin glass tube is made.
In one embodiment, described thermistor R
3, R
4be placed in reference gas chamber top.
The utlity model has the advantages such as measuring accuracy is high, and volume is little, good stability, effectively solved the baseline wander problem of bringing of self-heating when thermal conductivity method existence is subject to the impact of airflow fluctuation and works in prior art.
Accompanying drawing explanation
Fig. 1 the utility model structural representation;
Fig. 2 the utility model sampling system air flue schematic diagram;
Fig. 3 the utility model one conductance cell structural representation.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.These embodiment are only not used in restriction scope of the present utility model for the utility model is described.Unless otherwise defined, the familiar meaning of all specialties of using in literary composition and scientific words and one skilled in the art is identical.In addition, any method similar or impartial to described content and material all can be applicable in the utility model method.The use that better implementation method described in literary composition and material only present a demonstration.
A kind of portable H
2analyser is mainly comprised of sampling system, conductance cell, amplifier and Displaying Meter.The composition structure of instrument is shown in Fig. 1.
Sampling system is shown in Fig. 2, in its gas circuit, be provided with aerosol fillter, with dust in Filter Examination gas, for the ease of ship person, use and improve simultaneously the interference free performance of instrument, the measurement of this instrument and zeroing flow process adopt to be switched with square tube valve, transfer valve is installed on the front panel of instrument, and has two measuring states: " measure 1 " and " measuring 2 " state.When the transfer valve instrument is switched to " measuring 1 " state, now state is circulation zeroing state.When being switched to " measuring 2 " state, it is now measuring state.
Described conductance cell is shown in Fig. 3, and it comprises measures air chamber 1 and reference gas chamber 2, and described measurement air chamber contains 2 thermistor R
1, R
2, be placed in the gas circuit of measuring air chamber top; Described measurement air chamber is sealed gas chamber, contains 2 thermistor R
3, R
4; Described thermistor uses diameter 0.02mm platinum filament on adiabatic mandrel, outside cover thin glass tube is made, guaranteed that thermal inertia is little, shockproof, anticorrosion, working stability is reliable, gas circuit structure adopts convection current diffusion type in forwarder, and the be bullied impact of body fluctuations in discharge of this sampling instrument is little, keeps the response time very fast simultaneously.
The reference gas chamber of this instrument has been full of air and has been airtight, and the thermal sensing element of measurement and reference gas is the top that thermal resistance is arranged on air chamber.Therefore, gas enters top and only depends on diffusion, this variation of just farthest having avoided sampling gas flow impact on measurement result.
Scope of the present utility model is not subject to the restriction of described specific embodiments, and described embodiment, only as the single example of illustrating the utility model various aspects, also comprises method and the component of functional equivalent within the scope of the utility model.In fact, except content as herein described, those skilled in the art can easily grasp multiple improvement of the present utility model with reference to description and accompanying drawing above.Within described improvement also falls into the scope of appended claims.Every piece of list of references mentioned above is listed in herein as a reference all in full.
Claims (4)
1. a portable hydrogen analyser, it comprises sampling system, conductance cell, amplifier and Displaying Meter, it is characterized in that comprising and measuring air chamber and reference gas chamber at described conductance cell, and described measurement air chamber contains 2 thermistor R
1, R
2, be placed in the gas circuit of measuring air chamber top; Described measurement air chamber is sealed gas chamber, contains 2 thermistor R
3, R
4; Described thermistor is with diameter 0.02mm platinum filament on adiabatic mandrel, and outside cover thin glass tube is made.
2. portable hydrogen analyser as claimed in claim 1, is characterized in that described thermistor R
3, R
4be placed in reference gas chamber top.
3. portable hydrogen analyser as claimed in claim 1, is characterized in that described gas circuit structure adopts convection current diffusion type.
4. portable hydrogen analyser as claimed in claim 1, is characterized in that described sampling system contains aerosol fillter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420013234.5U CN203786066U (en) | 2014-01-09 | 2014-01-09 | Portable hydrogen gas analysis meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420013234.5U CN203786066U (en) | 2014-01-09 | 2014-01-09 | Portable hydrogen gas analysis meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786066U true CN203786066U (en) | 2014-08-20 |
Family
ID=51322242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420013234.5U Expired - Fee Related CN203786066U (en) | 2014-01-09 | 2014-01-09 | Portable hydrogen gas analysis meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203786066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680363A (en) * | 2016-12-15 | 2017-05-17 | 北京北分麦哈克分析仪器有限公司 | Bridge arm thermo-sensitive element, processing method thereof and magnetic pressure type oxygen detector |
-
2014
- 2014-01-09 CN CN201420013234.5U patent/CN203786066U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680363A (en) * | 2016-12-15 | 2017-05-17 | 北京北分麦哈克分析仪器有限公司 | Bridge arm thermo-sensitive element, processing method thereof and magnetic pressure type oxygen detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20180109 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |