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Safe level high-pressure ball valve

A high-pressure ball valve, safety-level technology, applied in the direction of valve details, valve device, valve shell structure, etc., can solve the problems of low pressure bearing, failure to meet system requirements, long opening and closing time of globe valve and gate valve, etc., and achieve high pressure bearing , short opening and closing time, convenient installation and maintenance

Active Publication Date: 2011-06-08
JIANGSU SHENTONG VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing safety grade ball valves such as low pressure bearing and long opening and closing time of globe valve and gate valve, which cannot meet the system requirements, the present invention provides a safety grade ball valve

Method used

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Embodiment Construction

[0010] Such as figure 1 As shown, the technical solution adopted by the present invention to solve its technical problems is a safety-grade high-pressure ball valve, comprising a valve body 2, a valve cover 1, a valve seat 3, a ball 14, a sealing ring 7, a valve stem 13, a stuffing box 8, Packing 12, packing gland 11, bracket 10, driving device 9, the left and right valve covers 1 are fixed on both sides of the valve body 2 by bolts, the sealing ring 7 is installed in the valve seat 3, and the valve seat 3 and the ball 14 are installed in the valve body. In the body 2, the valve stem 13 is sealed with the packing gland 11 through the packing 12. The left end channel of the valve body 2 has an internal thread, and the gland 6 has a matching external thread, and the gland 6 is screwed into the valve body 2. Press the valve seat 3, and there is a gasket 5 between the gland 6 and the valve cover 1. There are two symmetrical process holes 4 on the gland 6, and the gasket 5 is made...

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Abstract

The invention provides a safety high pressure ball valve. The safety high pressure ball valve comprises a valve body, valve covers, a valve seat, a ball body, a sealing ring, a valve rod, a packing box, filling material, a packing gland, a bracket and a driving device, wherein the left and right valve covers are fixed on both sides of the valve body by bolts, the sealing ring is arranged in the valve seat, the valve seat and the ball body are arranged in the valve body, the packing gland is sealed on the valve rod by the filling material, a channel at the left end of the valve body is provided with internal threads, the gland is provided with external threads matched with the internal threads, the gland is screwed in the valve body to tightly press the valve seat, a washer is arranged between the gland and the valve covers, the gland is symmetrically provided with two pierces, and the washer is made of pure nickel. The ball valve has the advantages of high pressure bearing of the product, short opening and closing time, reliable seal and convenient assembly and maintenance.

Description

technical field [0001] The invention relates to a valve device, in particular to a safety-grade high-pressure ball valve used in a pressurized water reactor nuclear power plant. Background technique [0002] The safety ball valves currently used in pressurized water reactor nuclear power plants generally adopt a top-mounted structure or a three-stage structure, and their pressure rating is 2MPa. When the pressure is 10 to 15MPa, consider using a globe valve or a gate valve instead of a ball valve. structure. Due to the long opening and closing time of the globe valve or gate valve, it cannot be satisfied when the system has time requirements. Contents of the invention [0003] In order to overcome the shortcomings of the existing safety-grade ball valves such as low pressure bearing and long opening and closing time of globe valves and gate valves, which cannot meet system requirements, the present invention provides a safety-grade ball valve. [0004] The technical solu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K27/06F16K5/06
Inventor 张逸芳陆平邹其军
Owner JIANGSU SHENTONG VALVE
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