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Eccentric ball valve

An eccentric ball and ball core technology, which is applied in the field of eccentric ball valves, can solve the problems that ball valves cannot meet strict sealing requirements, and triple eccentric butterfly valves cannot meet small flow resistance coefficients, etc., and achieve good sealing performance, simple structure, and high reliability.

Inactive Publication Date: 2015-09-09
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The triple eccentric butterfly valve cannot meet the requirements of small flow resistance coefficient
Among the common valves, the flow resistance coefficient of the ball valve is the smallest, but the existing structure makes the ball valve unable to meet the strict sealing requirements

Method used

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  • Eccentric ball valve
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Embodiment Construction

[0031] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] Such as figure 1 with image 3 shown, where figure 1 yes image 3 The ball core 4 is clockwise around the centerline 13 of the valve shaft (with image 3 For reference, the top view direction is the same as below. ) after rotating 90°, the projection of the upper valve shaft 5 is a circle, and the projection of the valve shaft centerline 13 is the center of the circle. The eccentric ball valve provided by the embodiment of the present invention includes: a valve body, a ball core 4, a valve shaft and a sealing structure. The valve body includes three parts: the first valve body 1 , the second valve body 2 and the third valve body 3 , which are horizontally arr...

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Abstract

The invention relates to the technical field of valves, in particular to an eccentric ball valve. The eccentric ball valve is used for occasions with multiple requirements for high temperature, high pressure, high irradiation, tight sealing, a large caliber and a small flow resistance coefficient. The eccentric ball valve comprises a valve body, a ball core, a valve shaft and a sealing structure. According to the two differences between the eccentric ball valve and a conventional three-in-one type fixed ball valve, the eccentric distance between the central line of the valve shaft and the central line of the ball core is increased, and sealing performance is improved; a floating valve seat is omitted, the structure is simpler, and valve reliability is improved. The eccentric ball valve can achieve maintenance of a primary helium circulator.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an eccentric ball valve used in situations requiring high temperature, high pressure, high radiation, tight sealing, large diameter and small flow resistance coefficient. Background technique [0002] The high-temperature gas-cooled reactor is a high-temperature reactor with graphite as the moderator and helium as the coolant. It is an advanced nuclear reactor with good inherent safety, high power generation efficiency, and extremely wide uses. [0003] The maintenance of the main helium blower of the high temperature gas-cooled reactor nuclear power plant should mainly meet the following requirements: [0004] (1) Prevent leakage of helium coolant in the primary circuit; [0005] (2) Prevent outside air from infiltrating into the primary circuit, and maintain the purity of the helium coolant in the primary circuit. [0006] As we all know, helium has strong permeability, and on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K27/06
CPCF16K5/0605F16K5/0657F16K5/0689F16K27/067
Inventor 王宏张勤昭张作义
Owner TSINGHUA UNIV
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