CN210426654U - Thermal conductive gas mass flowmeter - Google Patents
Thermal conductive gas mass flowmeter Download PDFInfo
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- CN210426654U CN210426654U CN201921780610.2U CN201921780610U CN210426654U CN 210426654 U CN210426654 U CN 210426654U CN 201921780610 U CN201921780610 U CN 201921780610U CN 210426654 U CN210426654 U CN 210426654U
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- 238000001514 detection method Methods 0.000 claims abstract description 48
- 230000000630 rising effect Effects 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 71
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a thermal conductance gas mass flow meter relates to flowmeter technical field, has solved the gas mass flow meter's among the prior art testing result and has easily appeared the error, and the gas component sets for the problem that the mistake can influence the gas flow testing result. The utility model discloses a main technical scheme does: the gas mass flowmeter comprises a gas mass flowmeter body and a detection controller, wherein the gas mass flowmeter body comprises a shell, the left end and the right end of the shell are respectively provided with an air inlet opening and an air outlet opening, the shell comprises a component measuring part and a flow detection part, the left end of the component measuring part is provided with the air inlet opening, the right end of the flow detection part is provided with the air outlet opening, and an electric valve is arranged between the component measuring part and the flow detection part; the left end of the inside of the component measuring part is provided with a temperature rising device, and a first temperature sensor is arranged in the component measuring part and adjacent to the temperature rising device.
Description
Technical Field
The utility model relates to a flowmeter technical field especially relates to a thermal conductance gas mass flowmeter.
Background
The traditional gas mass flowmeter needs to set specific parameters according to each gas to detect the flow of different gases, and in the detection process, if the gas components are set incorrectly, the detection of the gas flow is affected, so that the error of the detection result is caused. To this end, we provide a thermally conductive gas mass flow meter.
Disclosure of Invention
In view of this, the embodiment of the utility model provides a thermal conductance gas mass flowmeter, the main objective is that the testing result of solving the gas mass flowmeter among the prior art has easily appeared the error, and the gas component sets for the problem that the error can influence gas flow testing result. In order to achieve the above object, the utility model mainly provides the following technical scheme:
on the one hand, the embodiment of the utility model provides a thermal conductance gas mass flowmeter, this thermal conductance gas mass flowmeter includes: the gas mass flowmeter comprises a gas mass flowmeter body and a detection controller, wherein the gas mass flowmeter body comprises a shell, the left end and the right end of the shell are respectively provided with an air inlet opening and an air outlet opening, the shell comprises a component measuring part and a flow detection part, the left end of the component measuring part is provided with the air inlet opening, the right end of the flow detection part is provided with the air outlet opening, and an electric valve is arranged between the component measuring part and the flow detection part;
a temperature rising device is arranged at the left end of the inside of the component measuring part, a first temperature sensor is arranged in the component measuring part and adjacent to the temperature rising device, a second temperature sensor is arranged at one end, close to the flow detection part, of the inside of the component measuring part, a preset distance is arranged between the second temperature sensor and the first temperature sensor and is respectively used for detecting the gas temperature at the corresponding position in the shell, and the first temperature sensor, the second temperature sensor and the temperature rising device are respectively and electrically connected with the detection controller;
a third temperature sensor, a pressure sensor and a flow velocity sensor are arranged in the flow detection part, and the third temperature sensor, the pressure sensor and the flow velocity sensor are respectively and electrically connected with the detection controller;
wherein the temperature raising device raises the gas temperature inside the component measuring part to 200-300 ℃, and the gas temperature inside the flow rate measuring part is 50-100 ℃.
Optionally, a rectifying device is arranged at one end of the flow detecting part close to the component measuring part.
Optionally, the housing is shaped as a hollow cylinder.
Optionally, the method further includes: and the detection controller is arranged on the shell of the gas mass flowmeter body through the mounting seat.
Optionally, the detection controller further includes a display screen.
The embodiment of the utility model provides a thermal conductance gas mass flowmeter, the casing of gas mass flowmeter body include component survey part and flow measurement part, survey the component of unknown gas sample through component survey part, and its measuring method uses unknown gas sample circulation difference in temperature and thermal conductivity formula to calculate to confirm the component of unknown gas sample, avoid having the gas flow detection error that the gas component settlement mistake leads to. After the component information of the unknown gas sample is obtained, the gas flow is detected through the flow detection part, so that the accurate detection of the gas flow is realized.
Drawings
Fig. 1 is a schematic structural diagram of a main body of a thermal conductivity gas mass flowmeter according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description of the embodiments, structures, features and effects of the thermal conductivity gas mass flowmeter according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Example one
As shown in fig. 1, the first embodiment of the present invention provides a thermal conductivity gas mass flowmeter, which includes:
the gas mass flow meter comprises a gas mass flow meter body and a detection controller 1, wherein the gas mass flow meter body comprises a shell 2, the left end and the right end of the shell 2 are respectively provided with an air inlet opening and an air outlet opening, the shell 2 comprises a component measuring part 201 and a flow detection part 202, the left end of the component measuring part 201 is the air inlet opening, the right end of the flow detection part 202 is the air outlet opening, and an electric valve 3 is arranged between the component measuring part 201 and the flow detection part 202;
a temperature raising device 4 is arranged at the left end of the inside of the component measuring part 201, a first temperature sensor 5 is arranged in the component measuring part 201 and adjacent to the temperature raising device 4, a second temperature sensor 6 is arranged at one end, close to the flow detection part 202, of the inside of the component measuring part 201, a preset distance is arranged between the second temperature sensor 6 and the first temperature sensor 5 and is respectively used for detecting the gas temperature at the corresponding position in the shell 2, and the first temperature sensor 5, the second temperature sensor 6 and the temperature raising device 4 are respectively and electrically connected with the detection controller 1;
a third temperature sensor 7, a pressure sensor 8 and a flow velocity sensor 9 are arranged inside the flow detection part 202, and the third temperature sensor 7, the pressure sensor 8 and the flow velocity sensor 9 are respectively and electrically connected with the detection controller 1;
wherein, the temperature raising device 4 raises the gas temperature inside the component measuring part 201 to 200-300 ℃, and the gas temperature inside the flow detecting part 202 is 50-100 ℃.
Specifically, the housing 2 of the gas mass flow meter body comprises a component measuring part 201 and a flow rate detecting part 202, the component measuring part 201 is used for measuring components of an unknown gas sample, and the specific method comprises the following steps: when an unknown gas sample enters the gas inlet opening, the temperature is raised to 200-400 ℃ by the temperature raising device 4, and the temperature raising device 4 can be a device which is customized and contains 3 Pt100 and has a resistance of 100-400 ohms. The temperature value of unknown gas sample is detected through first temperature sensor 5 and second temperature sensor 6, temperature 1 and temperature 2 promptly, sets up preset interval between second temperature sensor 6 and the first temperature sensor 5, can be because the flow of gas air current produces the difference in temperature, calculates the calculation thermal conductivity through the thermal conductivity formula:
at this time, the composition of the gas is calculated through the existing data, after the composition is confirmed, the electric valve 3 between the composition measuring part 201 and the flow detecting part 202 is opened, the gas flow can be detected through the flow detecting part 202, at this time, the temperature is controlled to be 50-100 ℃, when the gas with different flow rates flows through the third temperature sensor 7, different temperature differences are generated, the current gas flow is calculated through the computer according to the detected different temperature differences, and the gas flow can be accurately measured.
The embodiment of the utility model provides a thermal conductance gas mass flowmeter, casing 2 of gas mass flowmeter body includes component measurement part 201 and flow measurement part 202, through the component of component measurement part 201 survey unknown gas sample, at the temperature value that detects unknown gas sample through first temperature sensor 5 and second temperature sensor 6, temperature 1 and temperature 2 promptly, its measuring method uses unknown gas sample circulation difference in temperature and heat conductivity formula to calculate, with the component of confirming unknown gas sample, avoid having the gas flow detection error that the gas component settlement mistake leads to. After the component information of the unknown gas sample is obtained, the gas flow is detected through the flow detection part 202, and the current gas flow is calculated through computer calculation according to the different measured temperature differences, so that the gas flow can be accurately measured, and the accurate detection of the gas flow is realized.
Specifically, the flow rate detecting portion 202 is provided with a rectifying device 10 at an end thereof close to the component measuring portion 201. Fairing 10 sets up in flow detection portion 202's entry end, and fairing 10 can be the collator among the prior art, and it is not repeated here specifically to add the structure, can adjust the gaseous turbulent air current that gets into flow detection portion 202 into comparatively smooth air current through setting up fairing 10, then detects through the inside part of flow detection portion 202, can improve the accuracy and the measurement accuracy who detect.
The housing 2 may be provided in various specific configurations as long as it is ensured that the central portion thereof has a hollow structure for allowing gas to flow therethrough, and specifically, the housing 2 may be provided in a hollow cylindrical shape, but is not limited thereto, and may be provided in a hollow rectangular parallelepiped shape, and the like, and is not particularly limited thereto.
Specifically, this embodiment provides a thermal conductivity gas mass flowmeter further including: and the mounting seat 11 is used for mounting the detection controller 1 on the shell 2 of the gas mass flowmeter body through the mounting seat 11. In thermal conductance gas flowmeter's working process, because its inside operating temperature requires, inside gas flows and carries the heat, can cause casing 2's intensification, for avoiding the high temperature to cause the influence to detecting controller 1, can install detecting controller 1 through mount pad 11, in order to reach the effect of will detecting controller 1 and casing 2 separation, avoid the high temperature to cause harmful effects to detecting controller 1, avoid influencing the life who detects controller 1.
Specifically, still including display screen 12 on the detection controller 1, through setting up display screen 12, can be used for showing the testing result of thermal conductivity gas mass flowmeter, can also be used for showing the inside relevant parameter of casing 2, like gaseous component parameter, temperature parameter etc. be favorable to the more audio-visual environmental parameter condition of receiving detection information and thermal conductivity gas mass flowmeter of staff. The display 12 may be a liquid crystal display commonly used in the art.
It should be noted that in the description of the present specification, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A thermally conductive gas mass flowmeter, comprising:
the gas mass flowmeter comprises a gas mass flowmeter body and a detection controller, wherein the gas mass flowmeter body comprises a shell, the left end and the right end of the shell are respectively provided with an air inlet opening and an air outlet opening, the shell comprises a component measuring part and a flow detection part, the left end of the component measuring part is provided with the air inlet opening, the right end of the flow detection part is provided with the air outlet opening, and an electric valve is arranged between the component measuring part and the flow detection part;
a temperature rising device is arranged at the left end of the inside of the component measuring part, a first temperature sensor is arranged in the component measuring part and adjacent to the temperature rising device, a second temperature sensor is arranged at one end, close to the flow detection part, of the inside of the component measuring part, a preset distance is arranged between the second temperature sensor and the first temperature sensor and is respectively used for detecting the gas temperature at the corresponding position in the shell, and the first temperature sensor, the second temperature sensor and the temperature rising device are respectively and electrically connected with the detection controller;
a third temperature sensor, a pressure sensor and a flow velocity sensor are arranged in the flow detection part, and the third temperature sensor, the pressure sensor and the flow velocity sensor are respectively and electrically connected with the detection controller;
wherein the temperature raising device raises the gas temperature inside the component measuring part to 200-300 ℃, and the gas temperature inside the flow rate measuring part is 50-100 ℃.
2. A thermally conductive gas mass flow meter as claimed in claim 1,
and a rectifying device is arranged at one end of the flow detection part close to the component measurement part.
3. A thermally conductive gas mass flow meter as claimed in claim 1,
the shell is in a hollow cylindrical shape.
4. A thermally conductive gas mass flowmeter as set forth in claim 1 further comprising:
and the detection controller is arranged on the shell of the gas mass flowmeter body through the mounting seat.
5. A thermally conductive gas mass flow meter as claimed in claim 1,
the detection controller also comprises a display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921780610.2U CN210426654U (en) | 2019-10-23 | 2019-10-23 | Thermal conductive gas mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921780610.2U CN210426654U (en) | 2019-10-23 | 2019-10-23 | Thermal conductive gas mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210426654U true CN210426654U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921780610.2U Expired - Fee Related CN210426654U (en) | 2019-10-23 | 2019-10-23 | Thermal conductive gas mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210426654U (en) |
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2019
- 2019-10-23 CN CN201921780610.2U patent/CN210426654U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| 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: 20200428 |