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New active sealing ball valve

A technology of active sealing and ball valves, applied in the direction of valve devices, engine components, cocks including cut-off devices, etc., to improve the use, ensure the sealing effect, and prolong the service life

Inactive Publication Date: 2016-08-31
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this passive sealing form still has big problems in use.

Method used

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  • New active sealing ball valve
  • New active sealing ball valve
  • New active sealing ball valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The specific implementation of the present invention will be described below in conjunction with the drawings and examples.

[0026] like Figure 1 ~ Figure 2 As shown, the ball valve of the present invention comprises a right valve body 1, a left valve body 2, a ball core 3, a valve stem 4, a ball sealing ring 5 and a valve seat 6; In the valve cavity of the valve formed by connection, a valve seat 6 is installed at the connection between the inner pipe of the right valve body 1 and the inner pipe of the left valve body 2 and the ball core 3 respectively, and the top of the ball core 3 is connected for manual horizontal rotation of the ball core 3 The valve stem 4 protrudes from the side of the valve cavity of the left valve body 2, and the valve stem 4 is connected with the left valve body 2 in a circumferential seal; the ball core 3 has a central through hole in the horizontal direction, and the center of the ball core 3 through There are annular grooves 3A symmetri...

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PUM

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Abstract

The invention discloses a novel active seal ball valve. A ball core is arranged in the valve cavity of a valve constructed by hermetically connecting a right valve body with a left valve body; a valve seat is arranged on joints between a right valve body inner pipeline and the ball core as well as between a left valve body inner pipeline and the ball core respectively; the top of the ball core is connected with a valve rod for manually and horizontally rotating the ball core; the valve rod extends out of the valve cavity side face of the left valve body; a central through hole is formed along the horizontal direction of the ball core; circular grooves are symmetrically formed in spherical surfaces on two horizontal sides of the central through hole of the ball core; ball sealing rings matched with the valve seats are arranged on the circular grooves; the ball sealing rings and the valve seats are of annular stepped structures; the ball sealing rings and the valve seats are connected through respective stepped annular sealing surfaces to realize active seal. A sealing pair having an active sealing function is designed, so that the sealing effect of the valve is enhanced, and the service life of the valve is prolonged.

Description

technical field [0001] The invention relates to a novel ball valve, in particular to a novel active sealing ball valve. Background technique [0002] Ball valve is a special pipeline component used to control the flow and direction of fluid medium in fluid pipeline transportation system. It has a great influence on the stability and reliability of the whole system, so it is called "the throat of the pipeline". Sealing performance is an important performance that needs to be paid attention to during the use of the valve, which determines the safety and reliability of the use of the valve. For the existing ball valve, the contact between the valve seat and the ball is mainly used to form a sealing pair to achieve the sealing effect. However, this passive sealing form still has big problems in use. Contents of the invention [0003] In order to solve the sealing problem in the background technology, the present invention further studies the sealing technology of the ball v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06F16K5/08
CPCF16K5/06F16K5/20
Inventor 朱林杭林哲阮晓东
Owner ZHEJIANG UNIV