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Integrated two-way measurement elbow flow meter

An elbow flowmeter, two-way measurement technology, applied in the direction of volume/mass flow generated by mechanical effects, fluid flow detection by measuring pressure difference, measuring device, etc., can solve the problem of increased workload, low safety factor, and many leak detection points. And other issues

Pending Publication Date: 2020-11-13
华北理工大学智能仪器厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the two-way measuring elbow flowmeter can measure the respective flows in two directions with only one elbow flowmeter, it needs to cooperate with a section of throttling parts to realize the measurement in the process of using the patent, which is demanding for the installation space. Installation conditions, the installation of another section of throttling piece may not be able to meet the installation space requirements, and the throttling piece will affect the measurement accuracy of the flowmeter to a certain extent, and there is a hidden danger of leakage at the connection between the throttle piece and the straight pipe section, especially for pressure pipes or conveying pipes. There are many leak detection points in the pressure test of pipelines with corrosive, flammable, toxic and other media, which increases the workload and has a low safety factor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]Embodiment 1, the first interface angle and the second interface angle are both 45°, the first pressure difference is measured, the third interface angle is any angle between 18°-32°, and the fourth interface angle is 58°- Any angle between 72°, the second pressure difference is measured, other conditions are the same as above, the secondary instrument 40 selects one of the pressure differences to calculate the flow of the fluid in the pipeline, and compares the two pressure difference values, The direction of fluid flow can be obtained. When the fluid flows in the forward direction, the second pressure difference is larger than the pressure differences at other angles, and the first pressure difference is smaller than the second pressure difference; when the fluid flows in the reverse direction, the second pressure difference is smaller than the pressure differences at other angles. The first pressure difference is greater than the second pressure difference. In partic...

Embodiment 2

[0025] Embodiment 2, the first interface angle and the second interface angle are both 45°, the third interface angle is any angle between 58°-72°, and the fourth interface angle is any angle between 18°-32° , the other conditions are the same as above, when the fluid flows forward, the second pressure difference is smaller than other angle pressure differences, and the first pressure difference is greater than the second pressure difference; when the fluid flows in the reverse direction, the second pressure difference is smaller than other angle pressure differences The angle pressure difference is a large value, the first pressure difference is smaller than the second pressure difference, and it is particularly pointed out that when the third interface angle is 67.5° and the fourth interface angle is 22.5°, the other conditions are the same as above, and the fluid flows forward When the angle is reversed, the second pressure difference is smaller than the pressure differences...

Embodiment 3

[0026] Embodiment 3, the first interface angle is any angle between 18°-32°, the second interface angle is any angle between 58°-72°, and the third interface angle is between 58°-72° Any angle of any angle, the fourth interface angle is any angle between 18°-32°, the other conditions are the same as above, when the fluid flows forward, the first pressure difference is larger than the pressure difference at other angles, the first The second pressure difference is smaller than that of other angles, and the first pressure difference is greater than the second pressure difference; when the fluid flows in reverse, the first pressure difference is smaller than other angles, and the second pressure difference is smaller than other angles. The pressure difference is a relatively large value, and the first pressure difference is smaller than the second pressure difference.

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Abstract

The invention discloses an integrated two-way measurement elbow flow meter which comprises an elbow sensor, a first differential pressure transmitter, a second differential pressure transmitter and asecondary instrument. A first connector is formed on the inner side of the elbow sensor, a second connector is formed on the outer side, the first connector and the end face of the elbow sensor form afirst connector angle, the second connector and the end face of the elbow sensor form a second connector angle, and the first connector and the second connector are respectively connected with the first differential pressure transmitter through first measuring pipelines. A third connector is also formed on the inner side of the elbow sensor, a fourth connector is formed on the outer side of the elbow sensor, a third connector angle is formed by the third connector and the end face of the elbow sensor, a fourth connector angle is formed by the fourth connector and the end face of the elbow sensor, and the third connector and the fourth connector are connected with the second differential pressure transmitter through second measuring pipelines. The first differential pressure transmitter and the second differential pressure transmitter are connected with the secondary instrument. The integrated two-way measurement elbow flow meter is wide in installation application range and high in measurement precision and safety coefficient.

Description

technical field [0001] The invention relates to a fluid flow monitoring device, in particular to an integrated bidirectional measuring elbow flowmeter. Background technique [0002] The elbow flowmeter is a flow measurement device that can measure the flow in the pipeline without being affected by the flow direction of the fluid, but it has no function of judging which direction the fluid flows in. Therefore, it is necessary to measure the forward and reverse flow separately , the needs cannot be met. In industrial applications, due to the influence of seasons, output and the location of the source of fluid transmission, the fluid in the pipeline alternately flows in both directions. flow. Patent application number 201520076334.7 discloses a two-way measuring elbow flowmeter, including an elbow body, a temperature transmitter, a pressure transmitter, a first differential pressure transmitter, a throttle, a second differential pressure Transmitter and secondary host meter,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/34G01P13/02
CPCG01F1/34G01P13/02
Inventor 周振江薛贵军吕鸣宇孙金荣
Owner 华北理工大学智能仪器厂
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