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Ultralow-temperature tool-aid-type fixing ball valve and assembling method thereof

A technology for fixing ball valves, assembly methods, applied in the direction of valve details, valve devices, valve housing structures, etc.

Active Publication Date: 2014-05-21
FANGZHENG VALVE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]In order to overcome the deficiencies and defects in the background technology, the present invention provides an ultra-low temperature top-entry fixed ball valve, which mainly solves the problem that the existing valve seat installation method is a threaded rotary structure , the thread rotation of this structure is difficult, the technical problems of repeated disassembly and assembly, and the thread is easy to be damaged

Method used

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  • Ultralow-temperature tool-aid-type fixing ball valve and assembling method thereof
  • Ultralow-temperature tool-aid-type fixing ball valve and assembling method thereof
  • Ultralow-temperature tool-aid-type fixing ball valve and assembling method thereof

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Embodiment Construction

[0023] Embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0024] An assembly method for an ultra-low temperature top-entry fixed ball valve. The installation steps are as follows: First, use tooling to put the elastic support ring, left valve seat, and right valve seat assembly into the valve seat hole of the valve body, adjust the assembly size of the ball and the valve seat, and place the ball When the valve is in the open state, put it into the valve chamber, then rotate the ball 90°C to the closed state, use the tooling to stretch the elastic support ring to expose the positioning parts of the left valve seat and the right valve seat, and then pass through the fixed process hole on the elastic support ring Use tooling to fix the elastic support ring on the positioning part, then remove the tooling that stretches the elastic support ring, use the tooling to snap the half-open valve seat positioning ring into th...

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Abstract

The invention relates to an ultralow-temperature tool-aid-type fixing ball valve and an assembling method of the ultralow-temperature tool-aid-type fixing ball valve. The ultralow-temperature tool-aid-type fixing ball valve and the assembling method of the ultralow-temperature tool-aid-type fixing ball valve resolve the technical problems that an existing installation method of a valve seat adopts a thread screwing structure, the structure is difficult to screw and threads are damaged easily after multiple times of detachment and installation. A tool is used for putting a supporting ring, a left valve seat component and a right valve seat component into valve seat holes, a ball body is put into a valve cavity when the valve is in an open state, and the ball body is rotated by 90 degrees so that the valve can be in a closed state. A tool is used for opening the supporting ring to expose a positioning part of the left valve seat component and a positioning part of the right valve seat component, then the elastic supporting ring is fixed through a fixing process hole in the elastic supporting ring and the tool, and the tool used for opening the supporting ring is removed. A tool is used for clamping a positioning ring into the positioning parts of the valve seat through the tool, the split open positioning ring is fixed through a positioning plate, and then the tool used for fixing the elastic supporting ring is removed. Through the tool-aid structure and method, the installation method of the valve seat is changed, the traditional thread screwing type structure is changed into a stretchable installation structure, damage to the threads caused by multiple times of installation is avoided, multiple times of on-line detachment and installation on site can be achieved, and repairing is convenient.

Description

technical field [0001] The invention relates to a ball valve, in particular to an ultra-low temperature top-mounted fixed ball valve and an assembly method thereof. Background technique [0002] With the world's new energy being widely used, the country is also constantly developing and applying it, such as liquefied natural gas, liquid ethylene, liquid oxygen and other low-temperature media. With the increasing demand for these new energy sources, ball valves are used as pipelines in petroleum, chemical, natural gas and other industries. The main equipment of the medium, the ultra-low temperature ball valve is also in great demand immediately. [0003] Cryogenic ball valves mostly relied on imports before our country, and the country is also constantly developing them. However, the connection structure of the top-mounted super-low temperature fixed ball valves seen so far is flange connection, the valve seat is a DBB structure, and the installation method of the valve seat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P11/00F16K5/06F16K5/08F16K5/20
CPCB23P19/04F16K5/0636F16K5/0663F16K5/201F16K27/067
Inventor 焦伦龄方存正王奕彤方品田吴钊刘佳栋
Owner FANGZHENG VALVE GRP
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