CN104595518A

CN104595518A - D-shaped ball structure of hard seal eccentric ball valve

Info

Publication number: CN104595518A
Application number: CN201510011567.3A
Authority: CN
Inventors: 张雄飞; 犹治合
Original assignee: Wenzhou Aogong Valve Co Ltd
Current assignee: Wenzhou Aogong Valve Co Ltd
Priority date: 2015-01-07
Filing date: 2015-01-07
Publication date: 2015-05-06

Abstract

The invention discloses a D-shaped ball structure of a hard seal eccentric ball valve. The D-shaped ball structure consists of a solid ball, wherein a valve seat is arranged close to an outlet passage of the valve body; a product is a single-seat eccentric semi-ball valve; the solid ball body is arranged in a valve body cavity of the eccentric semi-ball valve; the ball body is of a D-shaped eccentric structure; the ball body is made by forging; through the solid forged D-shaped eccentric ball body, the problem that the eccentric semi-ball valve product does not deform under high-pressure and high-temperature environments is solved substantially.

Description

A kind of D shape sphere structure of hard seal eccentric ball valve

Technical field

The present invention and a kind of valve centre of sphere structure, particularly a kind of D shape centre of sphere structure of hard seal eccentric ball valve, spheroid forges solid construction, adds intensity and the rigidity of spheroid, can be used for high pressure grade and worst hot case environment.

Background technique

Ball valve is mainly used for blocking, the ducted medium of conducting.After unlatching, its actual internal area is consistent with the internal diameter of pipeline, and therefore resistance is little, almost without the pressure loss, therefore is widely used in oil, petrochemical industry, metallurgy, food, medicine, town construction, mine etc. numerous areas.But in order to meet multi-field duty requirements, ball valve is except traditional O type ball fixing ball valve, and derived from again a lot of kind, eccentric half-ball valve is one wherein.There is shortcoming in the sphere structure of existing eccentric half-ball valve, can not use, spheroid insufficient strength, the situations such as easy plastic deformation, high temperature creep distortion in the operating mode of High Temperature High Pressure.Shown in Fig. 2, tradition eccentric half-ball valve seal time pressurized time, valve seat 1 is under the effect of pressure P, push hemisphere 2 to, realize sealing, but this structure can only be used for mesolow power and normal temperature environment, once the pressure rating of valve serviceability temperature that is too high and valve is too high, hemisphere 2 will produce distortion, easily leaks.

Summary of the invention

For the deficiency that prior art exists, the object of the present invention is to provide a kind of D shape sphere structure of hard seal eccentric ball valve, it forms by forging solid sphere.

The technical solution adopted for the present invention to solve the technical problems is: valve seat is arranged near an outlet passage of valve body, product is single valve seat eccentric half-ball valve, in the valve body chamber of eccentric half-ball valve, solid sphere is set, spheroid is " D " font eccentric structure, spheroid is that forging is made, and the solid eccentric spheroid of " D " shape that forges fundamentally solves eccentric half-ball valve product indeformable problem in high pressure and hot environment.

Beneficial effect of the present invention: spheroid has anti-high-voltage performance and high temperature deformation resistance performance.

Accompanying drawing explanation

Fig. 1 is hard seal eccentric ball valve overall structure schematic diagram of the present invention;

Fig. 2 is the spheroid compressed structure schematic diagram of traditional eccentric half-ball valve

Fig. 3, be spheroid compressed structure schematic diagram of the present invention;

Fig. 4, be spheroid cross-sectional view of the present invention;

Fig. 5, be spheroid overall structure schematic diagram figure of the present invention;

Fig. 6, be sphere structure schematic top plan view of the present invention.

In figure, 1, valve seat, 2, spheroid.

Embodiment

As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5, Fig. 6, valve seat 1 is arranged near an outlet passage of valve body, product is single valve seat eccentric semi-spherical, in the valve body chamber of eccentric half-ball valve, solid sphere 2 is set, spheroid 2 loads in chamber from valve body one lateral channels, spheroid 2 is " D " font eccentric structure, and the solid eccentric spheroid 2 of " D " shape that forges fundamentally solves eccentric half-ball valve product indeformable problem in high pressure and hot environment; It is little that eccentric ball valve has flow resistance, rapid operation, because upper lower shaft and valve pipe have eccentric structure, valve can produce cam wedging effect when closing, and sealing is closed tighter and tighter, therefore sealability is reliable, during valve opening, under the effect of eccentric structure, spheroid can depart from valve seat in very little stroke, reduce friction, increase the service life.

Claims

1. a D shape sphere structure for hard seal eccentric ball valve, it is made up of solid sphere, it is characterized in that: arrange solid sphere in the valve body chamber of eccentric half-ball valve.

2. the D shape sphere structure of a kind of hard seal eccentric ball valve according to claim 1, is characterized in that: described spheroid is " D " word shape eccentric structure.