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Flow measuring device with single measuring tube for nuclear power and mounting method of device

A technology of flow measurement device and installation method, which is applied in the direction of detecting fluid flow by measuring pressure difference, volume/mass flow generated by mechanical effects, etc., can solve problems such as complex processing technology, and achieve simplified processing technology, reduced materials, and installation method simple effect

Active Publication Date: 2018-09-14
江阴市节流装置厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the overall structure of the measuring tube and the pressure-taking device of the measuring device is relatively complex, and the measuring tube is divided into the first measuring tube and the second measuring tube. The two sections of the measuring tube still need to be welded, and the stress defect of welding cannot be completely avoided.

Method used

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  • Flow measuring device with single measuring tube for nuclear power and mounting method of device
  • Flow measuring device with single measuring tube for nuclear power and mounting method of device
  • Flow measuring device with single measuring tube for nuclear power and mounting method of device

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Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 , Figure 4 As shown, in order to simplify the positioning structure of the throttling piece 2, facilitate processing, facilitate the loading and unloading of the throttling piece 2, reduce the leakage of the measuring tube 1, avoid the long-term flow impact of the fluid during use, and make the throttling piece 2 deviate from the position, the preferred The technical solution is that the positioning member 3 is a positioning pin or a positioning screw, and there are at least three positioning pins or positioning screws on each side, which are respectively arranged on both sides of the throttling member 2 and evenly distributed along the circumference. On the inner wall of the measuring tube 1 where the throttling piece 2 needs to be positioned, a blind hole is opened, and the positioning pin or positioning screw is screwed into the blind hole from the inner wall of the measuring tube from the inside to the outside, and the top end protrudes from the in...

Embodiment 2

[0031] Such as figure 2As shown, in order to simplify the positioning structure of the throttling piece, facilitate processing, facilitate the loading and unloading of the throttling piece, reduce the leakage of the measuring tube, and avoid the long-term flow impact of the fluid during use, the annular sheet-shaped throttling piece 2 is deviated from the position. The inner wall of the measuring tube 1 is respectively provided with annular grooves on both sides of the installation part of the throttling part 2. The positioning part 3 is made of elastic expansion rings, and the elastic expansion rings are two, which are respectively clamped on the throttle part. 2 In the annular groove on the inner wall of the measuring tube 1 on both sides, when the elastic expansion ring is closed, it is sent into the annular groove from the mouth of the measuring tube. When the elastic expansion ring is loosened, a part is placed in the annular groove, and a part protrudes from the measurem...

Embodiment 3

[0033] Such as image 3 As shown, when the pipeline of measuring tube 1 is long or the tube wall is thin or the tube diameter is small, it is inconvenient to open a blind hole from the inner wall of the measuring tube, the positioning part 3 adopts a positioning pin or a positioning screw, and the positioning pin or positioning screw There are at least three on each side, which are respectively arranged on both sides of the throttling member 2 and evenly distributed along the circumference. At the position where the throttling member 2 needs to be positioned on the outer wall of the measuring tube, three through holes are evenly opened along the circumference, and the positioning pin or positioning screw is screwed in through the through hole on the outer wall of the measuring tube 1 and then protrudes from the inner wall of the measuring tube to fix the throttling piece 2. In order to avoid fluid leakage caused by gaps, the outer wall of the measuring tube can be sealed with...

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Abstract

The invention discloses a flow measuring device with a single measuring tube for nuclear power and a mounting method of the device. The device comprises the measuring tube, a throttling element and positioning members; the measuring tube is an integrated measuring tube, and a through positive pressure receiving tube is vertically arranged at the front end of the measuring tube; the throttling element is in an annular sheet shape, an outer ring of the throttling element is in dynamic cooperation with the inner wall of the measuring tube, the throttling element is provided with a radially through negative pressure receiving hole, the wall of the measuring tube is provided with a through negative pressure detecting hole, the radially through negative pressure receiving hole in the throttlingelement corresponds to the negative pressure detecting hole in the wall of the measuring tube in position, and a negative pressure receiving tube is communicated with the negative pressure receiving hole and the negative pressure detecting hole; pressure receiving members are arranged on the positive pressure receiving tube and the negative pressure receiving tube respectively; the positioning members are arranged on both sides of the annular throttling element. The mounting method of the device includes the steps of forming the holes, placing the throttling element, fixing the throttling element and mounting accessories. Through the provided flow measuring device and the mounting method thereof, the situation that the throttling element is placed in the integral measuring tube is achieved, welding is completely avoided, the structure is reasonable, construction is simple, and mounting is convenient.

Description

technical field [0001] The invention relates to a throttling device, in particular to a nuclear power flow measuring device and an installation method thereof. Background technique [0002] In the prior art, the traditional differential pressure flowmeter generally adopts the welding form as a whole in the high-temperature and high-pressure occasions and high-risk media occasions. Since the welding parts are all designed at the throttling parts, the throttling elements will produce different after receiving the welding heat. Degree of deformation, this deformation is irreparable, which will eventually lead to a decrease in the measurement accuracy of the flowmeter. [0003] CN202631015U discloses a flow measuring device for nuclear power. The outer peripheral surface of the measuring tube and the inner peripheral surface of the bushing of the nuclear power flow measuring device constitute an annular pressure-taking device, and the measuring tube and the annular pressure-taki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/36G01F1/40
CPCG01F1/36G01F1/40
Inventor 邹莲郭嘉莲江英杰尤国腾庞飞
Owner 江阴市节流装置厂有限公司
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