CN205090015U

CN205090015U - Spheroid structure of high pressure bivalve seat track ball valve

Info

Publication number: CN205090015U
Application number: CN201520738887.4U
Authority: CN
Inventors: 张雄飞; 杨选标
Original assignee: ZHEJIANG PETROCHEMICAL VALVE CO Ltd
Current assignee: ZHEJIANG PETROCHEMICAL VALVE CO Ltd
Priority date: 2015-09-16
Filing date: 2015-09-16
Publication date: 2016-03-16
Anticipated expiration: 2025-09-16

Abstract

The utility model provides a spheroid structure of high pressure bivalve seat track ball valve, includes disk seat, ball clack, axle sleeve, central junction, flexible hole, roller bearing. This product improves the spheroid, and a flexible hole is processed out to the axis lower extreme of whole ball, and whole ball symmetry is divided into two ball clacks, the lower part position centralize junction of two ball clacks, flexible hole site in central junction, two ball clack around the Center junctions activities, roller bearing of manufacturing and designing, the roller bearing bore is the same with the bore size in flexible hole, and the roller bearing is placed flexible downthehole, and the shape size of the whole ball before roller bearing and flexible hole combine to part with the quilt is symmetrical is the same, two ball clack packages form the structure of coincideing round roller bearing activity, ball clack with the roller bearing, and the extrusion of two ball clacks can not produce material wriggling or deformation, ensures bivalve seat two way seal. The ball clack props and closes the flexibility, opens and close fast, convenient operation, has solved the dirt deposit problem of ball clack center junction simultaneously.

Description

A kind of sphere structure of high pressure double-valve-seat orbit ball valve

Technical field:

The utility model relates to a kind of ball body of valve structure, is specifically related to a kind of sphere structure of high pressure double-valve-seat orbit ball valve, and the operating mode especially harsh in High Temperature High Pressure uses, and realizes double-valve-seat two way sealed.

Background technique:

Double-valve-seat orbit ball valve, namely valve has two valve seats, and spheroid is combined by two ball clacks, is provided with support holds together dish in the upper end of two ball clacks, and support is held together dish and formed Cheng Long mechanism with the wedge of valve rod lower end, and when valve rod rises, two ball clacks close up and rotate, valve open.When valve rod moves down, drive combination spheroid to rotate and strut two ball clacks to two ends seat compression formation sealing, valve closing.The spheroid of double-valve-seat orbit ball valve deposits defect in design, and could not promote the use of, in design, defect is as follows:

One, when valve is in opening state, combination spheroid closes up, and two ball clacks are that face contacts with face (see Fig. 1); When valve is in closed condition, combination spheroid is strutted by valve rod wedge, at this moment, the top of two ball clacks of combination spheroid is opened, lower end is line and linear contact lay, the V-shaped groove in lower end (see Fig. 2), because the lower end of two ball clacks is located by axle sleeve, the mechanical wedging power of valve rod is delivered on the linear contact lay of ball clack lower end, and meanwhile, the pressure of medium acts on ball clack and is delivered to equally on linear contact lay, because the surface of contact of line and line is little, intensity specific pressure is inadequate, material certainly will be caused to wriggle, cause valve seal not tight.

Two, the concentricity requirement of double-valve-seat orbit ball valve to ball seal center line and valve seat center line is very high, when the linear contact lay generation wriggling of two ball clacks certainly will cause its center and valve seat off-centring, causes valve closing not tight.

Three, when valve is in closed condition, the top of two ball clacks is for opening, and the V-shaped groove in lower end, the easiest dirt deposits (see Fig. 2) in groove, slightly dirt deposition or coking, directly block combination spheroid normal occlusion and hold together, cause valve not opened.

Summary of the invention:

For above technological deficiency, for achieving the above object, a kind of sphere structure of high pressure double-valve-seat orbit ball valve is provided, comprises valve seat, ball clack, axle sleeve, joint, center, round tube hole, roller bearing.

The utility model solves the technological scheme that its technical problem adopts: this product improves spheroid, the axis lower end of Integral ball processes a round tube hole, Integral ball symmetry is divided into two ball clacks, the lower portion of two ball clacks forms joint, center, round tube hole is positioned at joint, center, and two ball clacks are movable around joint, center; Manufacture and design a roller bearing, roller bearing bore is the same with the caliber size of round tube hole, and roller bearing is placed in round tube hole, and the shape size of the Integral ball before roller bearing and round tube hole combination separate with by symmetry is the same; Two ball clacks surround roller bearing activity, and ball clack and roller bearing form anastomotic structures, and two ball clack extruding can not produce material and wriggle or metaboly, guarantee double-valve-seat two way sealed.

The utility model beneficial effect: ball clack supporting is flexible, keying speed is fast, easy to operate, solves the dirt deposition problem of joint, ball clack center simultaneously.

Accompanying drawing illustrates:

Fig. 1 is the spheroid folding structure schematic diagram of former double-valve-seat orbit ball valve;

Fig. 2 is the spheroid tension structure schematic diagram of former double-valve-seat orbit ball valve;

Fig. 3 is whole sphere structure schematic diagram of the present invention;

Fig. 4 is the symmetrical separate structure schematic diagram of whole spheroid of the present invention

Fig. 5 is spheroid tension structure schematic diagram of the present invention;

Fig. 6 is spheroid folding structure schematic diagram of the present invention;

In figure, 1, valve seat, 2, ball clack, 3, axle sleeve, 4, joint, center, 5, round tube hole, 6, roller bearing.

Embodiment:

As shown in the figure, the utility model comprises valve seat 1, ball clack 2, axle sleeve 3, joint, center 4, round tube hole 5, roller bearing 6.Be furnished with two valve seats 1 and a spheroid in the valve pocket of ball valve, spheroid is combined by two ball clacks 2, and spheroid bottom arranges axle sleeve 3, and spheroid top arranges combined Cheng Long mechanism, and combined support is held together mechanism supports two ball clacks and strutted and close up activity.This product improves spheroid, is to process a round tube hole 5 in the axis lower end of Integral ball, as shown in Figure 3; Then spheroid symmetry is divided into two ball clacks, the lower portion of two ball clacks forms joint, center 4, and it is movable around joint, center 4 that round tube hole 5 is positioned at 4, two, joint, center ball clack, as shown in Figure 4.

A roller bearing 6 is processed, as shown in Figure 5 by the caliber size of round tube hole 5; Be placed on by roller bearing 6 in round tube hole 5, the size shape size of the Integral ball before roller bearing 6 and round tube hole 5 combination separate with by symmetry is the same, as shown in Figure 6; Under the effect of combined Cheng Long mechanism, two ball clacks 2 surround roller bearing 6 and strut, close up activity freely, even if spheroid is softened maximum, two ball clacks and roller bearing 6 are in anastomotic structures all the time, and joint, center 4 coincide, and does not have space to stockpile dirt.

Two ball clacks surround roller bearing and strut or close up activity; ball clack and roller bearing are in surface contact structure all the time; so; be that the mechanicals efforts of valve rod or the active force of high-pressure medium promote all to produce material wriggling or metaboly when left ball clack extrudes right ball clack, guarantee that double-valve-seat orbit ball valve realizes two way sealed.

Claims

1. the sphere structure of a high pressure double-valve-seat orbit ball valve, comprise valve seat, ball clack, axle sleeve, joint, center, round tube hole, roller bearing, it is characterized in that: the axis lower end of Integral ball processes a round tube hole, Integral ball symmetry is divided into two ball clacks, and the lower portion of two ball clacks forms joint, center; Manufacture and design a roller bearing, roller bearing is placed in round tube hole; Two ball clacks surround roller bearing activity, and ball clack and roller bearing form anastomotic structures, guarantee double-valve-seat two way sealed.

2. the sphere structure of a kind of high pressure double-valve-seat orbit ball valve according to claim 1, described is characterized in that round tube hole is positioned at joint, center, and two ball clacks are movable around joint, center.

3. the sphere structure of a kind of high pressure double-valve-seat orbit ball valve according to claim 1, described is characterized in that roller bearing bore is the same with the caliber size of round tube hole.

4. the sphere structure of a kind of high pressure double-valve-seat orbit ball valve according to claim 1, described to it is characterized in that roller bearing and round tube hole combine the shape size of the Integral ball before separating with by symmetry the same.

5. the sphere structure of a kind of high pressure double-valve-seat orbit ball valve according to claim 1, described is characterized in that two ball clack extruding can not produce material and wriggle or metaboly.