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Orifice plate flowmeter

A technology of orifice flowmeter and orifice plate, which is applied in the direction of indirect mass flowmeter and mass flow measurement device, which can solve the problems of poor test accuracy and other problems

Active Publication Date: 2020-04-17
SHENYANG BLOWER WORKS GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides an orifice flowmeter, the main purpose of which is to solve the problem of poor test accuracy in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The mass flow rate of fluid is an important parameter for fluid measurement in production and life, such as calculating user water consumption, chemical enterprises calculating reaction gas quality, calculating user gas consumption, etc. An embodiment of the present invention provides an orifice flowmeter, such as figure 1 with figure 2 As shown, it includes: an orifice plate 1, an upstream flange 3 and a downstream flange 4 that are fixedly connected to the orifice 1 and the pipeline 2, and the orifice flowmeter also includes:

[0052] A first pressure sensor 5 and a second pressure sensor 6 are arranged on the upstream flange 3, and the connecting line between the first pressure sensor 5 and the second pressure sensor 6 and the center of the upstream flange 3 The included angle is 90 degrees, the first pressure sensor 5 is used to detect the first pressure value on the side of the upstream flange 3 in the pipeline 2, and the second pressure sensor 6 is used to detec...

Embodiment 2

[0063] When the controller 9 detects the real-time mass flow rate of the orifice plate 1 according to the real-time differential pressure, in order to improve the detection accuracy, as image 3 Shown specifically include:

[0064] 301. Acquire environmental parameters of the pipeline 2 where the orifice plate 1 is installed.

[0065] Environmental parameters include the inner diameter of the orifice plate 1, the inner diameter of the pipe 2, the fluid density of the fluid in the pipe 2, the minimum mass flow rate through the pipe 2, the maximum mass flow rate through the pipe 2, and the maximum mass flow rate on both sides of the orifice plate 1. differential pressure. The minimum mass flow rate refers to the minimum value of the mass flow rate of the fluid flowing through the pipe 2, the maximum mass flow rate refers to the maximum value of the mass flow rate of the fluid flowing through the pipe 2, and the maximum differential pressure refers to the pressure difference on ...

Embodiment 3

[0081] When the controller 9 detects the real-time mass flow rate of the orifice plate 1 according to the real-time differential pressure, in order to improve the detection accuracy, as Figure 4 shown, including:

[0082] 401. Obtain the environmental parameters of the pipeline 2 where the orifice plate 1 is installed.

[0083] Environmental parameters include the inner diameter of the orifice plate 1, the inner diameter of the pipe 2, the fluid density of the fluid in the pipe 2, the minimum mass flow rate through the pipe 2, the maximum mass flow rate through the pipe 2, and the maximum mass flow rate on both sides of the orifice plate 1. differential pressure. The minimum mass flow rate refers to the minimum value of the mass flow rate of the fluid flowing through the pipe 2, the maximum mass flow rate refers to the maximum value of the mass flow rate of the fluid flowing through the pipe 2, and the maximum differential pressure refers to the pressure difference on both s...

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Abstract

The invention discloses an orifice plate flowmeter, relates to the technical field of fluid flow detection, and aims to solve the problem of poor test precision in the prior art, the orifice plate flowmeter mainly comprises a pore plate, an upstream flange plate and a downstream flange plate which are used for fixedly connecting the pore plate with a pipeline, a first pressure sensor and a secondpressure sensor are arranged on the upstream flange plate; a third pressure sensor and a fourth pressure sensor are mounted on the downstream flange plate; the first pressure sensor and the third pressure sensor are arranged by taking the longitudinal section of the pore plate as a symmetry plane, and the second pressure sensor and the fourth pressure sensor are arranged by taking the longitudinalsection of the pore plate as a symmetry plane; a controller is connected with the first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor and usedfor calculating real-time differential pressure on the two sides of the pore plate; the controller is further used for detecting the real-time mass flow of the pore plate according to the real-time differential pressure. The orifice plate flowmeter is mainly applied to the process of detecting the fluid flow in the pipeline.

Description

technical field [0001] The invention relates to the technical field of fluid flow detection, in particular to an orifice flowmeter. Background technique [0002] Flow measurement is widely used in various fields of industrial and agricultural production, national defense construction, scientific research and people's life, and plays an important role in ensuring product quality, improving production efficiency, and promoting the development of science and technology. Orifice plates are circular perforated metal sheets installed in pipes of circular cross-section. When the fluid flows through the pipe, because the inner diameter of the orifice plate is smaller than the inner diameter of the pipe, according to Bernoulli's principle, a pressure difference will be generated on both sides of the orifice plate. By measuring the pressure difference before and after the orifice plate, the flow rate value of the fluid passing through the orifice plate can be detected. [0003] In p...

Claims

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Application Information

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IPC IPC(8): G01F1/88
CPCG01F1/88
Inventor 牛哲史吉隆谭永前赵新君吴锋邢明磊张瑞
Owner SHENYANG BLOWER WORKS GROUP CORP
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