CN214121293U - Pressure taking device of porous balance flowmeter - Google Patents
Pressure taking device of porous balance flowmeter Download PDFInfo
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- CN214121293U CN214121293U CN202022726801.XU CN202022726801U CN214121293U CN 214121293 U CN214121293 U CN 214121293U CN 202022726801 U CN202022726801 U CN 202022726801U CN 214121293 U CN214121293 U CN 214121293U
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Abstract
The utility model relates to a pressure taking device of a porous balance flowmeter, which comprises a porous restrictor, wherein the porous restrictor is arranged in a pipeline where a measured medium is positioned, the right side surface of the porous restrictor is a first side surface, and the left side surface of the porous restrictor is a second side surface; the MEMS pressure sensor and the pressure-flow conversion module which are packaged are arranged on the first side face of the porous throttle, the signal transmission line is used for connecting the MEMS pressure sensor and the differential pressure-flow conversion module, the geometric center of the second side face of the porous throttle is provided with a pressure guide pipe, the porous throttle is provided with a plurality of function holes, and the geometric center of the porous throttle is provided with a pressure guide hole which penetrates through the porous throttle. The utility model provides a porous balance flow meter's pressure equipment gets has smallly, and is with low costs, installs advantages such as convenient, simple structure and measurable little differential pressure, is applicable to the differential pressure measurement of multiple medium.
Description
Technical Field
The utility model relates to a flowmeter technical field especially relates to a porous balanced flowmeter's pressure equipment that gets.
Background
The porous balance flowmeter is a flowmeter which converts differential pressure into flow by acquiring the differential pressure at both sides of the restrictor. At present, the method is widely applied to the industries of petroleum, chemical industry, metallurgy, electric power, natural gas, water treatment and the like, and has a series of advantages of wide applicable medium, simple structure, high precision, low cost, good stability and the like. However, the pressure measuring device of the current porous balance flowmeter is large in size, and pressure measuring holes need to be drilled in a pipeline of a measured medium, so that the installation portability is poor, the cost is high, and the pipeline is damaged. Therefore, there is a need to develop a new pressure tapping device for a porous balance flowmeter that can solve the above problems.
SUMMERY OF THE UTILITY MODEL
To above current problem and demand, the utility model provides a pressure equipment of porous balance flowmeter gets through introducing MEMS (Micro-Electro-Mechanical System, MEMS) pressure sensor, can be in reduce cost, promote measurement accuracy and installation portability to can measure little differential pressure value.
The utility model provides a technical scheme that its technical problem adopted is:
a pressure tapping device for a porous balanced flow meter, comprising: the device comprises a porous throttle 1, a pressure guide pipe 2, an MEMS pressure sensor 3, a signal transmission line 4 and a differential pressure-flow conversion module 5;
the multi-hole throttler 1 is arranged in a pipeline where a measured fluid is located;
the right side surface of the multi-hole restrictor 1 is a first side surface 11, and the left side surface of the multi-hole restrictor 1 is a second side surface 12;
the MEMS pressure sensor 3 is arranged at the geometric center of the first side 11 of the porous throttle 1;
the pressure guiding pipe 2 is arranged at the geometric center of the second side face 12 of the multi-hole throttler 1;
the differential pressure-flow conversion module 5 is arranged on the first side surface 11 of the multi-hole restrictor 1 and is arranged in the edge area which is not covered by any object;
the MEMS pressure sensor 3 is connected with the differential pressure-flow conversion module 5 through a signal transmission line 4; the signal transmission line 4 is used for transmitting a differential pressure signal of the MEMS pressure sensor 3 to the differential pressure-flow conversion module 5;
the multi-hole throttler 1 is provided with a plurality of through function holes 13, and a through pressure guide hole 14 is further arranged at the geometric center of the multi-hole throttler 1.
On the basis of the scheme, the porous throttle 1 is welded in a pipeline where the measured fluid is located.
On the basis of the above scheme, the MEMS pressure sensor 3 is a packaged chip, the MEMS pressure sensor 3 is provided with a first sensing hole 31 and a second sensing hole 32, and the first sensing hole 31 and the second sensing hole 32 are respectively located on two side surfaces of the MEMS pressure sensor 3 and are used for sensing pressures on two sides of the MEMS pressure sensor 3 at the same time.
On the basis of the above scheme, the second sensing hole 32 is located at the geometric center of the MEMS pressure sensor 3, and the geometric centers of the first sensing hole 31 and the second sensing hole 32 are not on the same horizontal line.
On the basis of the above scheme, the geometric centers of the second sensing hole 32, the pressure guide hole 14 and the pressure guide pipe 2 of the MEMS pressure sensor 3 are on the same horizontal line.
On the basis of the scheme, the aperture of the pressure guide hole 14 is not smaller than that of the second induction hole 32, and the inner diameter of the pressure guide pipe 2 is not smaller than that of the pressure guide hole 14.
On the basis of the scheme, the function holes 13 are uniformly distributed on one or more circumferences with the center of the pressure guide hole 14 as the center, and all the function holes 13 are covered by the area where the fluid is located.
On the basis of the scheme, the MEMS pressure sensor 3, the differential pressure-flow conversion module 5 and the pressure guide pipe 2 are respectively welded on the porous restrictor 1.
On the basis of the scheme, the length of the pressure guide pipe 2 is not less than the diameter of a pipeline where the measured fluid is located.
On the basis of the scheme, the sectional area of the porous throttle 1 is larger than that of a pipeline where a medium to be detected is located;
the beneficial effects of the utility model are that, the utility model provides a pressure equipment that gets of porous balanced flowmeter, including porous throttle ware, porous throttle ware sets up in being surveyed the medium place pipeline, arranges packaged MEMS pressure sensor in the geometric centre department of porous throttle ware first side, arranges the pressure pipe at the geometric centre department of the second side of porous throttle ware, arranges signal transmission line and pressure-flow conversion module on porous throttle ware first side, and signal transmission line has connected MEMS pressure sensor and differential pressure-flow conversion module, porous throttle ware contains a plurality of function holes, and the geometric centre department of porous throttle ware contains a pressure hole that leads that runs through.
The utility model provides a porous balance flow meter's pressure equipment gets has small, and is with low costs, and the installation is convenient, simple structure and measurable advantage such as little differential pressure are applicable to the differential pressure measurement of multiple medium.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a first schematic structural diagram of a pressure sampling device in this embodiment;
FIG. 2 is a second schematic structural diagram of the pressure sampling device in this embodiment;
FIG. 3 is an overall sectional view of the present embodiment;
fig. 4 is a schematic structural diagram of a MEMS pressure sensor of the present invention;
fig. 5 is a schematic structural diagram of a MEMS pressure sensor of the present invention;
fig. 6 is a schematic view of the multi-hole flow restrictor of the present invention.
In the figure:
1. the device comprises a multi-hole throttler, 11, a first side face, 12, a second side face, 13, a function hole, 14, a pressure guide hole, 2, a pressure guide pipe, 3, an MEMS pressure sensor, 31, a first sensing hole, 32, a second sensing hole, 4, a signal transmission line and 5, a differential pressure-flow conversion module.
Detailed Description
The present invention will be described in further detail with reference to fig. 1 to 6.
This embodiment provides a porous balanced flowmeter's pressure equipment structure, includes: the device comprises a porous throttle 1, a pressure guide pipe 2, an MEMS pressure sensor 3, a signal transmission line 4 and a differential pressure-flow conversion module 5.
A MEMS pressure sensor 3 is arranged at the geometric center of a first side surface 11 of the porous throttler 1, and a pressure guide pipe 2 is arranged at the geometric center of a second side surface 12 of the porous throttler 1; the differential pressure-flow conversion module 5 is arranged in the edge region of the first side 11 of the porous throttle 1, which is not covered by any object; the signal transmission line 4 is connected with the MEMS pressure sensor 3 and the differential pressure-flow conversion module 5. The multi-hole throttling device 1 comprises a plurality of function holes 13, and a pressure guide hole 14 penetrates through the geometric center of the multi-hole throttling device 1.
In this embodiment, the MEMS pressure sensor 3 is a packaged chip, and includes a first sensing hole 31 and a second sensing hole 32, which can sense the pressure on both sides of the MEMS pressure sensor 3. The geometric centers of the first sensing hole 31 and the second sensing hole 32 are not on the same horizontal line, meanwhile, the geometric centers of the second sensing hole 32, the pressure guide hole 14 and the pressure guide pipe 2 are on the same horizontal line, and the aperture of the pressure guide hole 14 and the aperture of the pressure guide pipe 2 are not smaller than the aperture of the second sensing hole 32.
The function holes 13 are evenly distributed on the circumference with the center of the porous throttle 1 as the center of a circle. In order to ensure the stability of the extracted differential pressure, the length of the pressure guide pipe 2 is not less than the diameter of the pipeline where the measured fluid is located.
From the pipe, the fluid flows through the function orifice 13, with the impulse pipe 2 located in the downstream region.
In order to protect devices, the sectional area of the multi-hole throttling plate 1 is larger than that of a pipeline where a measured medium is located, the circumference where the function hole 13 is located is covered by the pipeline where fluid is located, and the differential pressure-flow conversion module 5 is located in an edge area where the first side face 11 of the multi-hole throttling plate is not covered. The MEMS pressure sensor 3, the differential pressure-flow conversion module 5 and the pressure guide pipe 2 are connected with the porous throttler 1 through welding, and the porous throttler 1 is connected with a pipeline where fluid is located through welding.
Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. A pressure tapping device for a porous balance flow meter, comprising: the device comprises a porous restrictor (1), a pressure guide pipe (2), an MEMS pressure sensor (3), a signal transmission line (4) and a differential pressure-flow conversion module (5);
the multi-hole restrictor (1) is arranged in a pipeline where a measured fluid is located;
the right side surface of the multi-hole restrictor (1) is a first side surface (11), and the left side surface of the multi-hole restrictor (1) is a second side surface (12);
the MEMS pressure sensor (3) is arranged at the geometric center of the first side face (11) of the porous restrictor (1);
the pressure guide pipe (2) is arranged at the geometric center of the second side surface (12) of the porous restrictor (1);
the differential pressure-flow conversion module (5) is arranged on a first side surface (11) of the multi-hole throttling device (1) and is arranged in an edge area which is not covered by any object;
the MEMS pressure sensor (3) is connected with the differential pressure-flow conversion module (5) through a signal transmission line (4); the signal transmission line (4) is used for transmitting a differential pressure signal of the MEMS pressure sensor (3) to the differential pressure-flow conversion module (5);
the multi-hole flow controller is characterized in that a plurality of penetrating function holes (13) are formed in the multi-hole flow controller (1), and a penetrating pressure guide hole (14) is further formed in the geometric center of the multi-hole flow controller (1).
2. The pressure tapping device of a multi-orifice balance flowmeter according to claim 1, wherein the multi-orifice restrictor (1) is welded in the pipe in which the measured fluid is located.
3. The pressure tapping device of the multi-hole balance flowmeter as claimed in claim 1, wherein the MEMS pressure sensor (3) is a packaged chip, and the MEMS pressure sensor (3) is provided with a first sensing hole (31) and a second sensing hole (32), and the first sensing hole (31) and the second sensing hole (32) are respectively located on two sides of the MEMS pressure sensor (3) and are configured to sense pressures on two sides of the MEMS pressure sensor (3) simultaneously.
4. The pressure tapping device of a multi-hole balance flowmeter according to claim 3, wherein the second sensing hole (32) is located at the geometric center of the MEMS pressure sensor (3), and the geometric centers of the first sensing hole (31) and the second sensing hole (32) are not on the same horizontal line.
5. The pressure tapping device of the multi-hole balance flowmeter as claimed in claim 4, wherein the geometric centers of the second sensing hole (32) of the MEMS pressure sensor (3), the pressure guide hole (14) and the pressure guide pipe (2) are on the same horizontal line.
6. The pressure tapping device of the porous balance flowmeter according to claim 5, wherein the diameter of the pressure guide hole (14) is not smaller than the diameter of the second sensing hole (32), and the inner diameter of the pressure guide pipe (2) is not smaller than the diameter of the pressure guide hole (14).
7. A pressure tapping device for a multi-orifice balance flow meter according to claim 1, wherein the function orifices (13) are evenly distributed on one or more circles centered on the center of the pressure leading orifice (14), and all the function orifices (13) are covered by the area where the fluid is located.
8. The pressure tapping device of the porous balance flowmeter according to claim 1, wherein the MEMS pressure sensor (3), the differential pressure-flow conversion module (5) and the pressure pipe (2) are respectively welded to the porous restrictor (1).
9. The pressure tapping device of the porous balance flowmeter according to claim 1, characterized in that the length of the pressure guiding pipe (2) is not less than the diameter of the pipe where the measured fluid is located.
10. The pressure tapping device of a multi-orifice balance flowmeter according to claim 1, wherein the cross-sectional area of the multi-orifice restrictor (1) is larger than the cross-sectional area of the pipe in which the measured fluid is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022726801.XU CN214121293U (en) | 2020-11-23 | 2020-11-23 | Pressure taking device of porous balance flowmeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022726801.XU CN214121293U (en) | 2020-11-23 | 2020-11-23 | Pressure taking device of porous balance flowmeter |
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| CN214121293U true CN214121293U (en) | 2021-09-03 |
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| CN202022726801.XU Active CN214121293U (en) | 2020-11-23 | 2020-11-23 | Pressure taking device of porous balance flowmeter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199323A (en) * | 2021-12-09 | 2022-03-18 | 北京智芯传感科技有限公司 | Monolithic integrated MEMS differential pressure flowmeter and preparation method thereof |
| CN115031792A (en) * | 2022-05-20 | 2022-09-09 | 安徽京芯传感科技有限公司 | Monolithic integrated MEMS differential pressure flowmeter and preparation method thereof |
-
2020
- 2020-11-23 CN CN202022726801.XU patent/CN214121293U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199323A (en) * | 2021-12-09 | 2022-03-18 | 北京智芯传感科技有限公司 | Monolithic integrated MEMS differential pressure flowmeter and preparation method thereof |
| CN115031792A (en) * | 2022-05-20 | 2022-09-09 | 安徽京芯传感科技有限公司 | Monolithic integrated MEMS differential pressure flowmeter and preparation method thereof |
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