CN203560546U

CN203560546U - Novel static sealing structure

Info

Publication number: CN203560546U
Application number: CN201320766318.1U
Authority: CN
Inventors: 黄静生; 黄敏; 周勇
Original assignee: Yancheng Sheng Ke Ball Valve Co Ltd
Current assignee: Yancheng Sheng Ke Ball Valve Co Ltd
Priority date: 2013-11-21
Filing date: 2013-11-21
Publication date: 2014-04-23
Anticipated expiration: 2023-11-21

Abstract

Disclosed is a novel static sealing structure which is a sealing end cap component. A valve seat component is positioned between a ball component and a main body component, the sealing end cap component is positioned between the valve seat component and the main body component and embedded on the main body component through an inner hexagon screw, three shoulders are formed on the outer edge of a sealing end cap, a first-step shoulder is higher than a third-step shoulder, a second-step shoulder is higher that the first-step shoulder, a groove is arranged at the first-step shoulder radially, an O-shaped ring is arranged in the groove, an end cap fireproof sealing gasket is arranged between the first-step shoulder and the second-step shoulder, a short-type injection check valve is arranged on the second-step shoulder, and a threaded end cap is arranged on the third-step shoulder. Integrated design is adopted for a valve body, so that two external leaking points are reduced, and structural length of a valve is shortened; sealing of a shell depends on pretensioning torque of a pipeline flange bolt, and the sealing end cap component is in a low-load or zero-load state for a long time, so that service life of the valve is prolonged.

Description

A kind of Novel static seal structure

Technical field

The utility model relates to a kind of sealing configuration, particularly a kind of Novel static seal structure.

Background technique

Since reform and opening-up, national economy rapid growth, scientific and technical innovation, autonomous innovation has become the main flow of domestic industry development.China's industry is just step by step to the future development of intensive style, energy-saving and emission-reduction, low-carbon (LC).The two ball-valves of two obstructions are widely used in the hydraulic system pipeline of the every profession and trades such as electric power, petrochemical industry, metallurgy, ocean, oil, natural gas, coal gas, pharmacy, higher to the seal request of valve.The two ball-valves of two obstructions are to design for replacing the complex form that in conventional tube, multiple valves connect, and the leakage point in minimizing system, realizes discharge, closing function fast.This ball valve has been saved installing space to greatest extent, has simplified installation procedure, has reduced the pressure of pipe-line system, facilitates instrument cleaning, reduces costs.But the existing double ball-valve structure of putting of two obstruction is take 3 stops as main, and the mode that valve body connects is that bolt connects, and sealability is relatively poor.The technician of R&D institution and enterprise is constantly exploring, is studying, and wishes to develop a kind of sealing configuration of superior performance, although make some progress, still exists the technical barrier not yet overcoming in practice.

Summary of the invention

The purpose of this utility model is to overcome above deficiency, a kind of Novel static seal structure is provided, the sealing of housing is by means of the pre-fastening moment of pipe flange bolt, use end cover assembly for a long time in low-load or no load condition, extend the working life of valve, improved the sealability of valve.

The utility model solves the technological scheme that its technical problem adopts: this static seal structure is end cover assembly, contain thread ending cover, end cover, end cap fire proof seal pad, O type circle, short type injection safety check, valve component is between spheroid assembly and body assembly, end cover assembly is between valve component and body assembly, by socket head screw, be embedded on body assembly, end cover outer rim forms three joint shoulders, first segment shoulder is higher than Section of three shoulder, second section shoulder is higher than first segment shoulder, first segment shoulder place is radially provided with groove, in groove, be provided with O type circle, between first segment shoulder and second section shoulder, be provided with end cap fire proof seal pad, second section shoulder is provided with short type injection safety check, section three, shoulder is provided with thread ending cover.

The beneficial effects of the utility model are: valve body adopts integrated design, reduce two places external leakage point, have shortened the structure length of valve.The sealing of housing simultaneously, by means of the pre-fastening moment of pipe flange bolt, is used end cover assembly for a long time in low-load or no load condition, has extended the working life of valve.

Accompanying drawing explanation

In conjunction with the accompanying drawings and embodiments the utility model to be further described below:

Fig. 1 is a kind of Novel static seal structure plan view;

Fig. 2 is a kind of Novel static seal structure left view;

Fig. 3 is a kind of Novel static seal structure A-A sectional view;

Fig. 4 is a kind of Novel static seal structure end cover assembly sectional view.

In the drawings, 1 socket head screw, 2 spheroid assemblies, 3 valve components, 4 end cover assemblies, 5 body assemblies, 6 thread ending covers, 7 end covers, 8 end cap fire proof seal pads, 9O type circle, 10 short type injection safety check.

Embodiment

In the drawings, a kind of Novel static seal structure, this static seal structure is end cover assembly 4, contain thread ending cover 6, end cover 7, end cap fire proof seal pad 8, O type circle 9, short type injection safety check 10, valve component 3 is between spheroid assembly 2 and body assembly 5, end cover assembly 7 is between valve component 3 and body assembly 5, by socket head screw 1, be embedded on body assembly 5, end cover 7 outer rims form three joint shoulders, first segment shoulder is higher than Section of three shoulder, second section shoulder is higher than first segment shoulder, first segment shoulder place is radially provided with groove, in groove, be provided with O type circle 9, between first segment shoulder and second section shoulder, be provided with end cap fire proof seal pad 8, second section shoulder is provided with short type injection safety check 10, section three, shoulder is provided with thread ending cover 6.Valve body adopts integrated design, reduces two places external leakage point, has shortened the structure length of valve.The sealing of housing simultaneously, by means of the pre-fastening moment of pipe flange bolt, is used end cover assembly 4 for a long time in low-load or no load condition, has extended the working life of valve.

Claims

1. a Novel static seal structure, this static seal structure is end cover assembly, contain thread ending cover, end cover, end cap fire proof seal pad, O type circle, short type injection safety check, it is characterized in that: valve component is between spheroid assembly and body assembly, end cover assembly is between valve component and body assembly, by socket head screw, be embedded on body assembly, end cover outer rim forms three joint shoulders, first segment shoulder is higher than Section of three shoulder, second section shoulder is higher than first segment shoulder, first segment shoulder place is radially provided with groove, in groove, be provided with O type circle, between first segment shoulder and second section shoulder, be provided with end cap fire proof seal pad, second section shoulder is provided with short type injection safety check, section three, shoulder is provided with thread ending cover.