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Gas ultrasonic flowmeter applied to large pipe diameter

An ultrasonic and flowmeter technology, which is used in liquid/fluid solid measurement, flow measurement/mass flow measurement, and measurement devices, etc., can solve the problems that flowmeters cannot meet the use of complex pipelines, and the pulsating flow reaction of choke flow is large. The rectification effect is good, the installation environment and manufacturing cost are reduced, and the effect of reducing the manufacturing and installation cost

Pending Publication Date: 2022-05-06
SHAANXI AEROSPACE POWER HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a gas ultrasonic flowmeter applied to a large pipe diameter, which is used to solve the problem that the current flowmeter cannot meet the use conditions of complex pipelines, and the flow blocking effect produced by the fluid in the existing pipe diameter gas ultrasonic flowmeter and large problems with the reaction of pulsating flow
The present invention sets the fluid in the large-diameter gas ultrasonic flowmeter to relatively ideal measurement conditions, and effectively solves the influence of fluid distribution changes on measurement accuracy

Method used

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  • Gas ultrasonic flowmeter applied to large pipe diameter
  • Gas ultrasonic flowmeter applied to large pipe diameter
  • Gas ultrasonic flowmeter applied to large pipe diameter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] like figure 1 As shown, a gas ultrasonic flowmeter applied to a large pipe diameter includes an ultrasonic metering unit and a rectifier located at the inlet end of the ultrasonic metering unit;

[0058] The rectifier includes a rectifier plate 1, a left flange 2, a seamless steel pipe 3 made of stainless steel and a right flange 4;

[0059] The left flange 2 is used to connect the external gas pipeline; the right flange 4 is connected with the ultrasonic metering unit flange;

[0060] The left flange 2 is provided with a stepped through hole;

[0061] The small end of the step through hole of the left flange 2 is sleeved on one end of the seamless steel pipe 3 and the step surface is flush with the end surface of the seamless steel pipe 3; The end face of the seam steel pipe 3 is flush;

[0062] The rectifier plate 1 is arranged on the big end of the step through hole of the left flange 2 and the outer surface is flush with the end face of the big end of the step th...

specific Embodiment 2

[0077] D=100mm.

[0078] like Figure 4 As shown, the surface of the rectifying plate 1 is provided with a first index circle with a diameter of 87mm, a second index circle with a diameter of 56mm, and a third index circle with a diameter of 24mm from the outside to the inside.

[0079] The centers of the first index circle, the second index circle and the third index circle are located at the same position.

[0080] like figure 2 As shown, there are 16 diameters d evenly arranged on the first indexing circumference with a diameter of 87mm 11 =13mm hole;

[0081] There are 10 diameters d evenly arranged on the second indexing circumference with a diameter of 56mm 22 =12mm hole;

[0082] Four diameters d are evenly arranged on the third indexing circumference with a diameter of 24mm 33 =14mm hole.

[0083] The rest of the structure is the same as that of the first embodiment.

Embodiment 2

[0084] The use effect of embodiment 2 and Image 6 shown consistent.

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Abstract

The invention particularly relates to a gas ultrasonic flow meter applied to a large pipe diameter, which is used for solving the problem that the existing rectifier cannot meet the requirement of complex pipeline installation and the problem that fluid in the existing pipe diameter gas ultrasonic flow meter generates a flow choking effect and the reaction effect of pulsating flow is large. The system comprises a rectifier; the rectifier is located at the inlet end of a fluid pipeline of the ultrasonic flowmeter, and the inner diameter of the rectifier and the diameter of the fluid pipeline are the same and are both D; the rectifier comprises a rectifying plate, a left flange, a seamless steel pipe and a right flange; the right flange is connected with the outer surface of the other end of the seamless steel pipe; the rectifying plate is a circular plate, and a plurality of concentric reference circles are arranged on the surface of the rectifying plate. According to the invention, the fluid in the large-pipe-diameter gas ultrasonic flowmeter is set to an ideal measurement condition, and the influence of flow state distribution change on the measurement precision is effectively solved.

Description

technical field [0001] The invention relates to the technical field of gas flow control, in particular to a gas ultrasonic flowmeter applied to a large pipe diameter. Background technique [0002] Ultrasonic flowmeter is a non-contact gas measurement instrument. It has the advantages of high measurement accuracy, wide measurement range, convenient installation and maintenance, and low cost of use. With the rapid development of ultrasonic flowmeter technology, ultrasonic flowmeters have been widely used in natural gas. , LPG and coal gas measurement. In order to ensure the measurement accuracy, the gas needs to be rectified when the ultrasonic flowmeter is working. [0003] Under the working condition of the ultrasonic flowmeter, it is necessary to ensure that the flow state of the natural gas entering the flowmeter is an aggregated and stable turbulent velocity distribution, but under the actual working condition, the velocity distribution of the natural gas by the valve in...

Claims

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Application Information

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IPC IPC(8): G01F1/66
CPCG01F1/662
Inventor 习宁刚蒋婷梁泽民范钊启马得力吕秋洁王晓宁
Owner SHAANXI AEROSPACE POWER HIGH TECH
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