CN104880275A - Sample gas pressure measuring device - Google Patents
Sample gas pressure measuring device Download PDFInfo
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- CN104880275A CN104880275A CN201510308064.2A CN201510308064A CN104880275A CN 104880275 A CN104880275 A CN 104880275A CN 201510308064 A CN201510308064 A CN 201510308064A CN 104880275 A CN104880275 A CN 104880275A
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- sample
- sample gas
- gas
- pressure
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Abstract
The invention provides a sample gas pressure measuring device, which comprises a sample gas pool, a shielding gas leading-in channel, a pressure sensor, a first communicating channel and a second communicating channel, wherein the sample gas pool is used for accommodating a sample gas; the shielding gas leading-in channel is used for leading in and updating a shielding gas; the pressure sensor is used for pressure measurement; the first communicating channel is used for communicating the shielding gas leading-in channel and the pressure sensor; and the second communicating channel is used for communicating the sample gas pool and the first communicating channel. In a preferable implementation mode, the shielding gas leading-in channel is provided with a valve. According to the invention, the pressure sensor is prevented from being directly communicated with the sample gas pool, and the pressure of sample gases, which are high in temperature, corrosive and the like and inconvenient to be measured directly, can be measured by using a general sensor. Meanwhile, the pressure of the sample gas pool can also be measured through optimizing arrangement of communicating vessels and flexibly setting the position of the pressure sensor.
Description
Technical field
The present invention relates to a kind of gas pressure measurement field, especially relate to sample atmospheric pressure measurement mechanism.
Background technology
At present, sample atmospheric pressure is measured and is generally adopted with the following method: directly use the pressure transducer being placed in sample gas to measure, this method is for i.e. economy but also reliable conventional environment sample gas, but when sample gas pond body internal sensor installing space is limited, or sample temperature degree is higher, or sample gas is when having corrosivity, this measuring method is selected to there is certain limitation.Under normal circumstances, high temperature or corrosivity etc. are not easy to the measurement of the sample atmospheric pressure of direct contact measurement, must use high temperature resistant or corrosion-preventive pressure sensor, and high temperature resistant or corrosion-preventive pressure sensor is expensive, especially small-range high-temperature-resistance pressure sensor.Simultaneously, small-range high-temperature-resistance pressure sensor also reaches the measurement operating limit of sensor technically, easily cause the instability of measurement result, in addition, when pressure transducer is in high temperature or corrosion environment for a long time, easily cause pressure transducer functionality complete failure, cause the pressure acquisition system of gas analyzer to collapse, directly affect the use of whole instrument.
Summary of the invention
In order to solve the problem, the invention provides a kind of economic sample atmospheric pressure measurement mechanism reliably, effectively reducing the cost that gas analyzer sample gas is measured on the one hand, improve the reliability that sample atmospheric pressure is measured simultaneously.
The present invention proposes a kind of sample atmospheric pressure measurement mechanism, as shown in Figure 1, comprises sample gas pond 1, for accommodating sample gas; Shroud gas introduction passage 4, for introducing and upgrading shroud gas; Pressure transducer 7, for pressure survey; First communicating passage 3, for being communicated with shroud gas introduction passage 4 and pressure transducer 7; Second communicating passage 2, for sample gas pond 1 and the first communicating passage 3.
In a preferred embodiment, described shroud gas introduction passage 4 is provided with valve 5.
In a preferred embodiment, when described valve 5 state is for opening, shroud gas is full of the second communicating passage 2 by shroud gas introduction passage 4 and the first communicating passage 3.
In a preferred embodiment, described sample gas pond 1 is equipped with the sample gas being not easy to directly measure pressure, and described second communicating passage 2 is equipped with shielding gas, for isolating the sample gas and pressure transducer that are not easy to directly measure pressure.
The present invention proposes a kind of sample atmospheric pressure measurement mechanism, due to avoid pressure transducer directly and sample gas pond communicate, ordinary sensors measurement high temperature and corrosivity etc. can be used to be not easy to the pressure of the sample gas directly measured, also by optimizing the layout of linker, the pressure in the position measurement sample gas pond of pressure transducer can be set flexibly simultaneously.
Accompanying drawing explanation
Accompanying drawing 1 is sample atmospheric pressure measurement mechanism schematic diagram of the present invention.
Embodiment
Describe the present invention below with reference to embodiment shown in the drawings.But structure, method or conversion functionally that the those of ordinary skill that these embodiments do not limit field of the present invention is made according to these embodiments are all included in protection scope of the present invention.
As shown in Figure 1, Fig. 1 is sample atmospheric pressure measurement mechanism schematic diagram of the present invention, in the specific embodiment of the invention, measure in order to ordinary sensors can be used the pressure that high temperature, corrosivity etc. are not easy to directly measure sample gas, simultaneously also in order to arrange the position of pressure transducer more flexibly.The present invention includes sample gas pond 1, for accommodating sample gas; Shroud gas introduction passage 4, for introducing and upgrading shroud gas; Pressure transducer 7, for pressure survey; First communicating passage 3, for being communicated with shroud gas introduction passage 4 and can being communicated with by passage 6 between pressure transducer 7, first communicating passage 3 and pressure transducer 7, so that pressure survey; Second communicating passage 2, for sample gas pond 1 and the first communicating passage 3.
In the present embodiment, described shroud gas introduction passage 4 is provided with valve 5.
In the present embodiment, when described valve 5 state is for opening, shroud gas is full of the second communicating passage 2 by shroud gas introduction passage 4 and the first communicating passage 3; When described valve 5 state is for closing, be full of in sample gas pond 1 and treat test sample gas, and in the second communicating passage 2, shroud gas introduction passage 4, first communicating passage 3, be still full of shroud gas, according in communicating passage, the principle that gaseous tension is equal everywhere, the pressure of sample gas is conducted to pressure transducer 7 by shroud gas, thus realizes using ordinary sensors measurement high temperature and corrosivity etc. to be not easy to the pressure of the sample gas directly measured.
A series of detailed description listed is above only illustrating for feasibility embodiment of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention equivalent implementations done of spirit or change all should be included within protection scope of the present invention.
Claims (4)
1. a sample atmospheric pressure measurement mechanism, is characterized in that, comprising:
Sample gas pond (1), for accommodating sample gas;
Shroud gas introduction passage (4), for introducing and upgrading shroud gas;
Pressure transducer (7), for pressure survey;
First communicating passage (3), for being communicated with shroud gas introduction passage (4) and pressure transducer (7);
Second communicating passage (2), for sample gas pond (1) and the first communicating passage (3).
2. a kind of sample atmospheric pressure measurement mechanism according to claim 1, it is characterized in that, shroud gas introduction passage (4) is provided with valve (5).
3. a kind of sample atmospheric pressure measurement mechanism according to claim 2, is characterized in that, when valve (5) state is for opening, shroud gas is full of the second communicating passage (2) by shroud gas introduction passage (4) and the first communicating passage (3).
4. a kind of sample atmospheric pressure measurement mechanism according to claim 1, it is characterized in that, described sample gas pond (1) is equipped with the sample gas being not easy to directly measure pressure, and described second communicating passage (2) is equipped with shielding gas, for isolating the sample gas and pressure transducer that are not easy to directly measure pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510308064.2A CN104880275A (en) | 2015-06-08 | 2015-06-08 | Sample gas pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510308064.2A CN104880275A (en) | 2015-06-08 | 2015-06-08 | Sample gas pressure measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104880275A true CN104880275A (en) | 2015-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510308064.2A Pending CN104880275A (en) | 2015-06-08 | 2015-06-08 | Sample gas pressure measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104880275A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07253373A (en) * | 1994-03-16 | 1995-10-03 | Hitachi Ltd | Density measuring apparatus of fluid and semiconductor manufacturing apparatus |
| US5528939A (en) * | 1995-03-21 | 1996-06-25 | Martin; Jacob H. | Micromechanical pressure gauge having extended sensor range |
| CN2593178Y (en) * | 2003-01-03 | 2003-12-17 | 严庆雨 | Anticorrosive, antifreezing pressure gauge adapter and bourdon tube |
| CN102928151A (en) * | 2012-11-14 | 2013-02-13 | 中国科学院工程热物理研究所 | Pressure measuring method and device for liquid metal |
| CN103808448A (en) * | 2014-02-19 | 2014-05-21 | 中国海洋石油总公司 | Measuring apparatus and method of pressure transmission time in fluid percolation environment |
| CN204740091U (en) * | 2015-06-08 | 2015-11-04 | 苏州谱道光电科技有限公司 | Sample gas pressure measuring equipment |
-
2015
- 2015-06-08 CN CN201510308064.2A patent/CN104880275A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07253373A (en) * | 1994-03-16 | 1995-10-03 | Hitachi Ltd | Density measuring apparatus of fluid and semiconductor manufacturing apparatus |
| US5528939A (en) * | 1995-03-21 | 1996-06-25 | Martin; Jacob H. | Micromechanical pressure gauge having extended sensor range |
| CN2593178Y (en) * | 2003-01-03 | 2003-12-17 | 严庆雨 | Anticorrosive, antifreezing pressure gauge adapter and bourdon tube |
| CN102928151A (en) * | 2012-11-14 | 2013-02-13 | 中国科学院工程热物理研究所 | Pressure measuring method and device for liquid metal |
| CN103808448A (en) * | 2014-02-19 | 2014-05-21 | 中国海洋石油总公司 | Measuring apparatus and method of pressure transmission time in fluid percolation environment |
| CN204740091U (en) * | 2015-06-08 | 2015-11-04 | 苏州谱道光电科技有限公司 | Sample gas pressure measuring equipment |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150902 |
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| RJ01 | Rejection of invention patent application after publication |