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Inverted-U-shaped-tube differential pressure gauge

A U-shaped tube and differential pressure gauge technology, applied in the field of differential pressure gauges, can solve the problems of poor accuracy, pressure gauge reference error, large error, etc., and achieve the effects of convenient installation and use, increased pressure resistance value, and small error

Active Publication Date: 2017-01-18
MINZU UNIVERSITY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this method is that there may be errors in the reference of the pressure gauge, especially the pressure gauge for measuring high pressure, which has a large range, poor accuracy, and greater errors
If the differential pressure of the two sections is small, the differential pressure value is even submerged by the error, and an accurate differential pressure value cannot be obtained

Method used

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  • Inverted-U-shaped-tube differential pressure gauge

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Embodiment Construction

[0024] Such as figure 1 As shown, the present invention includes a base 1 and a bracket 2, the bracket 2 is installed on the base 1, and an inverted U-shaped tube 3 is arranged on the bracket 2; Both sides of the U-shaped pipe 3 are symmetrically provided with a stop valve 5, and a three-way valve 6 is installed below the stop valve 5; one branch of the three-way valve 6 is connected with the inverted U-shaped pipe 3, and the other two branches are connected with the discharge port 8 respectively. It is connected with the test interface 9; the ball valve 7 is installed at the discharge port 8, and the net plug is installed at the test interface 9; the scale is set on the bracket 2; the inverted U-shaped tube 3 is made of plexiglass.

[0025] The inverted U-shaped tube 3 of the present invention uses plexiglass to replace the original glass, its pressure resistance is greatly improved, and it is suitable for testing in high-pressure environments. The bracket 2 is in the shape ...

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Abstract

The invention discloses an inverted-U-shaped-tube differential pressure gauge comprising a pedestal and a support frame installed on the pedestal. An inverted-U-shaped-tube is fixed on a front side of the support frame by clamps; stop valves are arranged at the two sides of the inverted-U-shaped-tube symmetrically; and three-way valves are installed below the stop valves. One branch of each three-way valve is communicated with the inverted-U-shaped-tube and the other two branches are communicated with a discharging outlet and a testing interface. Ball valves are installed at the discharging outlets; and mesh plugs are installed at the testing interfaces. A dividing ruler is arranged at the support frame. The inverted-U-shaped-tube is made of an organic glass material. In addition, the invention also provides a using method for the inverted-U-shaped-tube differential pressure gauge. According to the invention, water or other liquid can be used as a medium, so that the environment or any pipe is affected. Because the anti-pressure value of the inverted-U-shaped-tube is increased, the gauge can be used safely and used conveniently; and the precision is low and the error is small. On the basis of the vertical type design, direct contact with a tested pipe during measurement is avoided and the influence by pipe wall vibration is prevented. The differential pressure gauge is suitable for precise measurement of a low pressure difference of a high-pressure pipe.

Description

technical field [0001] The invention relates to a differential pressure gauge for measuring when fluid is conveyed inside a pipeline, in particular to an inverted U-shaped tube differential pressure gauge and a usage method thereof. Background technique [0002] In the process of pipeline fluid transportation, in order to calculate the resistance loss of the pipeline, it is necessary to measure the pressure difference between different sections of the pipeline. The conventional equipment for measuring differential pressure is a U-tube differential pressure gauge or a dual pressure gauge. [0003] The U-tube differential pressure gauge is widely used due to its simple structure, easy manufacture, convenient use, and high measurement accuracy. U-tube differential pressure gauges are generally used for measurement in low-pressure environments. The U-shaped tube is made of glass, filled with mercury or other fluid media, and the pressure difference is obtained through the heig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L13/04
CPCG01L13/04
Inventor 夏建新符瑜曹斌任华堂
Owner MINZU UNIVERSITY OF CHINA
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