A flow measurement method based on orifice throttling and mems pressure sensor
A technology of pressure sensor and flow measurement, which is applied in the direction of liquid/fluid solid measurement, measurement flow/mass flow, volume/mass flow generated by mechanical effects, etc. It can solve the problems of poor installation portability, destructive pipeline, large size, etc. Achieve the effect of low cost, good rectification effect and high precision
Active Publication Date: 2022-04-08
BEIJING INST OF COLLABORATIVE INNOVATION
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Problems solved by technology
However, the current pressure-taking device of the porous balance flowmeter is large in size, and the pressure-taking hole needs to be drilled on the pipeline of the measured medium, resulting in poor installation portability, high cost, and destructive to the pipeline
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[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0039] A flow measurement method based on orifice restriction and MEMS pressure sensor provided in this embodiment depends on the measuring device (full name is flow measurement device based on orifice restriction and MEMS pressure sensor), and the measurement device includes: orifice balance flowmeter, A pressure guiding tube 7, a MEMS pressure sensor 9, a signal acquisition unit and a signal processing unit. Among them, porous balance flowmeter and MEMS pressure sensor 9 such as Figure 1-4 shown.
[0040] The porous balance flowmeter among the present invention comprises: the front straight pipe section 1, the rear straight pipe section 2 and the porous throttle plate 3 between the front straight pipe section 1 and the rear straight pipe section 2; the front straight pipe section 1 and the rear straight pipe section 2 are both Made of stainless steel, th...
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The invention discloses a flow measurement method based on a multi-hole throttle and a MEMS pressure sensor, and relates to the technical field of flowmeters. The flow measurement method is based on a flow measurement device, and the flow measurement device includes a porous balance flowmeter, a pressure guiding tube, a MEMS pressure sensor, a signal acquisition unit and a signal processing unit; the porous balance flowmeter includes a front straight pipe section, a rear straight pipe section and The porous throttle plate connects the three through flanges and bolts; bolt holes, function holes and pressure guide holes are set on the porous throttle plate, and MEMS pressure sensors and signal acquisition units are arranged on one side of the porous throttle plate, and the other side of the porous throttle plate is arranged. A pressure guide tube is arranged on one side. The measured medium flows in from the front straight pipe section and flows to the rear straight pipe section through the porous throttle plate. The MEMS pressure sensor detects the pressure difference between the front straight pipe section and the rear straight pipe section. The signal acquisition unit collects the pressure difference signal and transmits it to the signal processing unit. The processing unit converts the differential pressure signal into a flow signal.
Description
technical field [0001] The invention relates to the technical field of flow measurement, in particular to a flow measurement method based on a multi-hole throttling and MEMS pressure sensor. Background technique [0002] Differential pressure flowmeter is one of the most widely used flowmeters. It has a series of advantages such as many applicable media, simple structure, low cost and good stability. It has been widely used in petroleum, chemical industry, metallurgy, electric power, natural gas and water treatment. and other industries, and formed an international standard. The fluid flows through the differential pressure flowmeter and shrinks at the throttle orifice, and differential pressure is generated before and after the throttle, and the differential pressure signal is related to the flow rate, and the flow rate can be obtained by converting the differential pressure signal. Common differential pressure flowmeters include orifice flowmeters and venturi tubes. [0...
Claims
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IPC IPC(8): G01F1/38B81B7/02
CPCG01F1/383B81B7/02
Inventor 张威黄越赵晓东陈广忠
Owner BEIJING INST OF COLLABORATIVE INNOVATION