CN201983961U - Negative pressure sampling analytical system for gas analyzer - Google Patents
Negative pressure sampling analytical system for gas analyzer Download PDFInfo
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- CN201983961U CN201983961U CN2011200830625U CN201120083062U CN201983961U CN 201983961 U CN201983961 U CN 201983961U CN 2011200830625 U CN2011200830625 U CN 2011200830625U CN 201120083062 U CN201120083062 U CN 201120083062U CN 201983961 U CN201983961 U CN 201983961U
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Abstract
The utility model relates to a negative pressure sampling analytical system for a gas analyzer, which is characterized in that a silencer is connected with a tubing vacuum generator, and the tubing vacuum generator is connected with a reducing valve and a tee joint through a pipe. One way of the tee joint is connected with an adjustable flowmeter which is connected with a measuring transducer, a vacuum filter and a five-way switch valve in series; the other way of the tee joint is connected with a needle valve and is in series connection with a tee joint, the tee joint is connected with a sampling air tube and a five-way switch valve, and the five-way switch valve is further connected with two needle valves. The two needle valves are connected with a zero calibration air tube and a measuring range air tube, and the reducing valve is connected with an air compression tube. The negative pressure sampling analytical system for the gas analyzer is simple and practical, free of maintenance and small in air consumption. Repetitive site use proves that operation of the analytical system is stable and reliable.
Description
Technical field
The utility model belongs to the analytical and testing instrument technical field, is specifically related to a kind of gas analyzer negative pressure sample analysis system.
Background technology
At present, the gas analyzer of using on the production line uses ' electronic or pneumatic aspiration pump ' extracting gases sample also with sending into analyser analysis after the flowmeter current limliting usually, and measuring head is in the pressure-fired environment works.This sampling mode, operating noise is big, operation and maintenance cost is high, and it is not the optimal selection scheme that working environment is had the workshop of specific (special) requirements.
The pneumatic aspiration pump that existing gas analyzer adopts is that sample gas suction analyser is analyzed, because equipment runs without interruption, air pump stops when changeing during often because of blade wear, influence measurement accuracy, and operating noise, vibrations bigger, average life, about half a year, an air driven pump was worth more than 10,000 yuan approximately, and maintenance cost is higher; Air pump when work air consumption is bigger, also wants regularly oily blade in the pressurized air oil fogger, and the waste gas of emptying can cause the oily contaminated vapor of workshop, need seek a kind of brand-new collector at these problems.
The utility model content
The purpose of this utility model provides a kind of features simple structure, stable and reliable operation gas sample negative pressure sampling system, effectively reduces analyser job costs and maintenance cost.
By gas characteristic as can be known, the consistance of flow/pressure when flow/pressure the when accuracy of gasmetry value depends on gasmetry and analyser calibration, in other words, as long as guarantee that the flow/pressure when flow/pressure when sample gas is measured is with standard gas calibration analyte instrument is identical, just can guarantee the accuracy of measured value.According to this principle, revise through test of many times and gas circuit, finally designed with vacuum generator replacement ' electronic or pneumatic aspiration pump ' and bled, measuring head is in little subnormal ambient works, and realizes the negative pressure sampling that gas sample constant pressure and flow is analyzed.
The technical solution of the utility model is: gas analyzer negative pressure sample analysis system is by sound suppressor connecting pipings type vacuum generator, pipe arrangement type vacuum generator connects reduction valve and a threeway by pipeline, this threeway one tunnel connects the adjustable flow meter, adjustable flow meter polyphone survey sensor, vacuum filter, five-way transfer valve, another road connects the needle valve and the threeway of contacting, this threeway connects sample tracheae and five-way transfer valve, the five-way transfer valve also connects two needle valves, these two needle valves connect school zero tracheae and range tracheae, and reduction valve connects compressed air hose.
Gas sample negative pressure sampling system of the present utility model adopts unconventional negative pressure sample analysis system, realizes the constant pressure and flow analysis of gaseous sample, improves measurement stability, reduces analyser operation, maintenance cost, eliminates vibrations and reduces operating noise.Native system is simple and practical, and is non-maintaining, air consumption little (about 20L/min).Use proof through scene repeatedly, working stability is reliable, is specially adapted to the gas analyzer of explosion-proof area.
Description of drawings
Fig. 1 is a gas analyzer negative pressure sample analysis system schematic of the present utility model.
Among the figure, 1-sound suppressor, 2-pipe arrangement type vacuum generator, 3-reduction valve, 4-adjustable flow meter, 5-survey sensor, 6-vacuum filter, 7-five-way transfer valve, 8-needle valve, 9-three-way connection.
Embodiment
As shown in Figure 1, gas analyzer negative pressure sample analysis of the present utility model system is by sound suppressor 1 connecting pipings type vacuum generator 2, pipe arrangement type vacuum generator connects reduction valve 3 and a threeway 9 by pipeline, this threeway 9 one tunnel connects adjustable flow meter 4, adjustable flow meter 4 polyphone survey sensors 5, vacuum filter 6, five-way transfer valve 7, another road connects the needle valve 8 and the threeway 9 of contacting, this threeway 9 connects sample tracheae and five-way transfer valve 7, five-way transfer valve 7 also connects two needle valves 8, these two needle valves connect school zero tracheae and range tracheae, and reduction valve 3 connects compressed air hose.
Wherein: sound suppressor is used to eliminate the pressurized air noise; Pipe arrangement type vacuum generator is used to produce constant negative pressure suction sample gas; Reduction valve provides stable operating air pressure for vacuum generator; The adjustable flow meter provides the sample that satisfies measurement requirement airshed; Survey sensor is measured sample gas concentration; Dust in the vacuum filter filtering sample gas; The five-way transfer valve is as calibration or measure selector switch; Needle valve is as calibration gas and bypass controlled atmosphere joint; Three-way connection connects as pipeline.
Principle of work:
1. equipment set-up procedure: connect pressurized air, regulate reduction valve and make output pressure satisfy the requirement of vacuum generator.
2. gas calibration process: the five-way transfer valve forwards zero gas or range gas end to, regulates needle valve and flowmeter respectively gas flow is met the demands, and the Operations Analyst instrument is finished calibration operation.
3. sample gas measuring process: the five-way transfer valve forwards the measuring position to, regulates the bypass needle valve, makes get final product identical with the gas flow of flow indication of flowmeter.
But save just operate as normal of post analysis instrument through this three step.
Claims (1)
1. gas analyzer negative pressure sample analysis system, it is characterized in that by sound suppressor connecting pipings type vacuum generator, pipe arrangement type vacuum generator connects reduction valve and a threeway by pipeline, this threeway one tunnel connects the adjustable flow meter, adjustable flow meter polyphone survey sensor, vacuum filter, five-way transfer valve, another road connects the needle valve and the threeway of contacting, this threeway connects sample tracheae and five-way transfer valve, the five-way transfer valve also connects two needle valves, these two needle valves connect school zero tracheae and range tracheae, and reduction valve connects compressed air hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200830625U CN201983961U (en) | 2011-03-25 | 2011-03-25 | Negative pressure sampling analytical system for gas analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200830625U CN201983961U (en) | 2011-03-25 | 2011-03-25 | Negative pressure sampling analytical system for gas analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201983961U true CN201983961U (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200830625U Expired - Fee Related CN201983961U (en) | 2011-03-25 | 2011-03-25 | Negative pressure sampling analytical system for gas analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201983961U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196709A (en) * | 2013-03-29 | 2013-07-10 | 重庆市电力公司电力科学研究院 | Standard gas acquisition device and gas supply system based on standard gas |
| CN104266883A (en) * | 2014-10-15 | 2015-01-07 | 李尚国 | Portable manual gas sampling cylinder |
| CN106706816A (en) * | 2017-01-16 | 2017-05-24 | 中国工程物理研究院核物理与化学研究所 | Vacuum sampling device for gas chromatograph |
| CN106796047A (en) * | 2014-08-28 | 2017-05-31 | 威尔泰克联合股份有限公司 | System based on programmable logic controller (PLC) and the user interface for air sampling in controlled environment |
| CN106841482A (en) * | 2017-01-16 | 2017-06-13 | 中国工程物理研究院核物理与化学研究所 | A kind of gas chromatograph application process of vacuum sampling device |
| CN109991365A (en) * | 2017-12-30 | 2019-07-09 | 光力科技股份有限公司 | Gas measurement device |
| CN110208321A (en) * | 2019-07-04 | 2019-09-06 | 上海智昂环保科技有限公司 | A kind of combustible gas explosion limit analysis system |
| USD877924S1 (en) | 2016-08-15 | 2020-03-10 | Veltek Associates, Inc. | Portable sampling device |
| USD878205S1 (en) | 2004-01-12 | 2020-03-17 | Veltek Associates, Inc. | Mixing and dispensing container |
| US11808674B2 (en) | 2008-02-07 | 2023-11-07 | Veltek Associates, Inc. | System and method for air sampling in controlled environments |
-
2011
- 2011-03-25 CN CN2011200830625U patent/CN201983961U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD878205S1 (en) | 2004-01-12 | 2020-03-17 | Veltek Associates, Inc. | Mixing and dispensing container |
| US11808674B2 (en) | 2008-02-07 | 2023-11-07 | Veltek Associates, Inc. | System and method for air sampling in controlled environments |
| CN103196709B (en) * | 2013-03-29 | 2015-11-18 | 重庆市电力公司电力科学研究院 | A kind of calibrating gas obtains equipment and the air supply system based on calibrating gas |
| CN103196709A (en) * | 2013-03-29 | 2013-07-10 | 重庆市电力公司电力科学研究院 | Standard gas acquisition device and gas supply system based on standard gas |
| CN106796047B (en) * | 2014-08-28 | 2019-12-10 | 威尔泰克联合股份有限公司 | Programmable logic controller based system and user interface for air sampling in a controlled environment |
| CN106796047A (en) * | 2014-08-28 | 2017-05-31 | 威尔泰克联合股份有限公司 | System based on programmable logic controller (PLC) and the user interface for air sampling in controlled environment |
| US11971396B2 (en) | 2014-08-28 | 2024-04-30 | Veltek Associates, Inc. | Programmable logic controller-based system and user interface for air sampling controlled environments |
| CN104266883A (en) * | 2014-10-15 | 2015-01-07 | 李尚国 | Portable manual gas sampling cylinder |
| USD877924S1 (en) | 2016-08-15 | 2020-03-10 | Veltek Associates, Inc. | Portable sampling device |
| CN106706816A (en) * | 2017-01-16 | 2017-05-24 | 中国工程物理研究院核物理与化学研究所 | Vacuum sampling device for gas chromatograph |
| CN106841482B (en) * | 2017-01-16 | 2018-04-20 | 中国工程物理研究院核物理与化学研究所 | A kind of application process of gas chromatograph vacuum sampling device |
| CN106841482A (en) * | 2017-01-16 | 2017-06-13 | 中国工程物理研究院核物理与化学研究所 | A kind of gas chromatograph application process of vacuum sampling device |
| CN109991365A (en) * | 2017-12-30 | 2019-07-09 | 光力科技股份有限公司 | Gas measurement device |
| CN110208321A (en) * | 2019-07-04 | 2019-09-06 | 上海智昂环保科技有限公司 | A kind of combustible gas explosion limit analysis system |
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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: 20110921 Termination date: 20150325 |
|
| EXPY | Termination of patent right or utility model |