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Leakproof detachable connected connector piece for nuclear reactor homocentric square-shaped runner

A kind of back-shaped flow channel, nuclear reactor technology, applied in the direction of pipes/pipe joints/pipes, expansion compensation devices for pipelines, threaded connections, etc., can solve problems such as unfavorable cutting, and achieve pollution avoidance, convenient operation, and effective sealing effect. Effect

Active Publication Date: 2019-05-21
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a leak-proof detachable connecting joint used in the circular flow channel of a nuclear reactor. When connecting to the channel wall, the detachable joint can be directly unscrewed without pollution; an expansion sealing device is installed in the middle of the detachable joint to match the assembly hole on the shell of the nuclear reactor return-shaped flow channel; the head of the detachab

Method used

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  • Leakproof detachable connected connector piece for nuclear reactor homocentric square-shaped runner
  • Leakproof detachable connected connector piece for nuclear reactor homocentric square-shaped runner
  • Leakproof detachable connected connector piece for nuclear reactor homocentric square-shaped runner

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Experimental program
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Effect test

Embodiment 1

[0029] An anti-leakage detachable connecting joint used for the return channel of a nuclear reactor, such as Figure 5 , Image 6 As shown, Image 6 for Figure 5 The enlarged structure diagram of the connecting part A of the middle hemispherical ball head and the inclined sealing surface. The detachable connecting joint includes a detachable joint 1, an inner flow passage wall 2, and a casing 3 of a return-shaped flow passage. The detachable joint 1 is Hollow tubular structure, the shell 3 is provided with assembly holes, one end of the detachable joint 1 extends into the inner flow channel wall 2 of the loop flow channel of the nuclear reactor, and the other end of the detachable joint 1 extends to the assembly hole of the shell 3 The head of the detachable joint 1 that contacts the assembly hole is provided with a hemispherical ball head 6, and the inner wall of the assembly hole is provided with a beveled sealing surface 7, and the hemispherical ball head 6 abuts on the bev...

Embodiment 2

[0039] The difference between this embodiment and the foregoing embodiment is that the number of the expansion sealing devices 4 is greater than or equal to two, and the expansion sealing devices 4 greater than or equal to two are continuously connected and form a whole. That is, a plurality of expansion sealing devices 4 are installed on the outer wall of one end of the detachable joint 1 close to the casing 3, and the expansion sealing devices 4 form a whole, forming a multi-layer seal with the inner wall of the opening of the casing 3 as a whole. Ensure the reliability of the seal.

[0040] The expansion and sealing device 4 provided in this embodiment, whether it is the optimization of its structure, or the limitation of the number of it installed at one end of the detachable joint 1, is based on the pre-tightening effect generated by it, and it is connected to the housing 3. The formation of an annular sealing surface, the increase in the number of 4 expansion sealing device...

Embodiment 3

[0042] The difference between this embodiment and the foregoing embodiment is that the end of the detachable joint 1 located in the inner flow channel is a hexagonal head end. The detachable joint 1 is designed to have a structure with a hexagonal head end, which facilitates the unscrewing of the detachable joint 1 when the inner runner is replaced or disassembled.

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Abstract

The invention discloses a leakproof detachable connected connector piece for a nuclear reactor homocentric square-shaped runner. The leakproof detachable connected connector piece for the nuclear reactor homocentric square-shaped runner comprises a detachable connector, an inner runner wall and a shell of the homocentric square-shaped runner. The detachable connector is of a hollow tubular structure. The shell is provided with an assembly hole. One end of the detachable connector extends into the inner runner wall of the nuclear reactor homocentric square-shaped runner, and the other end of the detachable connector extends into the assembly hole of the shell. The head part, making contact with the assembly hole, of the detachable connector is provided with a hemispherical head. The inner wall of the assembly hole is provided with an oblique sealing face, and the hemispherical head abuts against the oblique sealing face. The exterior of the middle of the detachable connector is providedwith expansion sealing devices, a sealed structural body is formed by the expansion sealing devices and the inner wall of the assembly hole, the detachable connector is connected with a threaded holeof the inner runner wall, and the detachable connector is in threaded connection with the inner runner wall. According to the technical scheme, by means of the detachable connector, convenience is provided for mounting and demounting of the homocentric square-shaped runner.

Description

Technical field [0001] The invention belongs to the technical field of nuclear reactor safety test equipment, and specifically refers to a leak-proof detachable connecting joint used for a loop flow channel of a nuclear reactor. Background technique [0002] In ordinary nuclear reactors, the flow channel is usually a single shape, and the flow channel is unidirectional or bidirectional such as figure 1 , figure 2 As shown, the existing new-type reactor flow channels are partly divided into inner and outer layers, and some are back-shaped. The flow channel passes through the inner flow channel wall, the original inner flow channel wall, The original flow channel and shell are connected to the outside, such as image 3 As shown, the inner flow channel wall communicates with the outside through a welded pipe. [0003] When the runner needs to be replaced or disassembled, because the pipe is connected by welding, the pipe can only be cut and welded; and when the inner runner wall of t...

Claims

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Application Information

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IPC IPC(8): F16L15/04F16L51/02
Inventor 荚川黄志刚张妍昝元峰李朋洲胡俊杨祖毛
Owner NUCLEAR POWER INSTITUTE OF CHINA