CN2606827Y

CN2606827Y - High temperature high pressure compensation type sealing ball valve

Info

Publication number: CN2606827Y
Application number: CN 03242077
Authority: CN
Inventors: 孟永康
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-24
Filing date: 2003-03-24
Publication date: 2004-03-17
Anticipated expiration: 2013-03-24

Abstract

The utility model relates to a high temperature high pressure compensation type sealing ball valve, comprising a valve body, a valve cover and a control end, wherein, a through hole sphere is arranged in the valve body cavity; the control end comprises a valve stem arranged in the valve body cavity; the upper part of the valve stem is connected with a handle through an inner hexagonal bolt and a spring; a support pad and a sealing pad are lined outside the middle part of the valve stem; a fixed vessel-surfaced valve seat and a sliding cone-surfaced valve seat are arranged in the through holes at two ends of the valve body to coordinate with the through hole sphere hermetically; a spring and a pad are lined outside the lower part of the valve stem to coordinate with the upper end of the sphere; a guide valve core is arranged in the bottom end of the valve stem; a straight chute is arranged outside the guide valve core to coordinate with a top wire on the sphere; the lower end of the guide valve core is a cone surface, which is matched with a guide valve seat arranged in the upper end of the sphere; the lower end of the sphere is provided with a limiting positioning cover. The utility model is simple in structure, dual in flow direction, low in torque force, small in friction coefficient, high temperature and high pressure resistant, not limited by specific pressure and capable of being suitable for the fluid medium with micro-particles, which has practical value.

Description

The compensation seal ball-valve of High Temperature High Pressure

Technical field

The utility model relates to a kind of compensation seal ball-valve of High Temperature High Pressure that is applicable to water, mud, chemical industry, electric power, metallurgy, papermaking, oil, natural gas transport.

Background technique

At present used ball valve can only be applicable to that flowing medium opens and closes in the pipeline under the normal temperature and pressure situation, and when flowing medium temperature and pressure were higher than routine, producing hot affinity and specific pressure increased, and driving torque power increases, and valve is opened and closed difficultly.In addition, in opening process, can produce the gap between latus rectum valve body and the spheroid, be easy to accumulate flowing medium,, hindered the rotation of spool as containing the graininess thing in the flowing medium, also can increase the frictional force that spool produces with valve seat in rotation process, make its serious wear, cause internal leakage, thereby can't be applied to carry the flowing medium of High Temperature High Pressure, band microparticle.

The model utility content

The purpose of this utility model is to provide a kind of simple in structure, double fluid to, high temperature high voltage resistant, no friction, the compensation seal ball-valve of High Temperature High Pressure that torque force is little, it can not only be applicable to the high temperature and high pressure flow body medium, also applicable to the flowing medium of being with microparticle.

The purpose of this utility model realizes by following technological scheme: the compensation seal ball-valve of a kind of High Temperature High Pressure, by valve body, valve gap and control end constitute, institute's valve gap is fixed by bolt and valve body, described valve body is equipped with the through hole spheroid in the chamber, described control end includes the valve rod that is equipped with in the valve cover cavity, hexagon socket head cap screw is passed through on valve rod top, the back of the body is female, pad, butterfly spring, it is bright that spring is connected with hand, the outside, position is lined with support pads in the valve rod, skidding, the soft seal assembly, sealing gasket and hard sealing gasket, it is characterized in that in the through hole of described valve body two ends fixedly Dou face valve seat being housed, conical slide valve seat and through hole spheroid coupling, and by adjusting cover, spring and adjustment swivel nut are regulated fixing, the outside, described stem lower portion position is lined with spring, pad cooperates with the spheroid upper end portion, be provided with cemented carbide guide spool in the valve rod bottom part, guide's spool is meshed with spiral shell button in the valve rod by external screw, guide's spool outside is provided with straight runner and matches with jackscrew on the spheroid, guide's spool underpart is the conical surface, be complementary with the cemented carbide guide valve seat that is provided with in the spheroid upper end portion, the spheroid lower end is provided with spacing setting sleeve.

The utility model adopts above-mentioned design proposal, it is simple in structure, double fluid to, torque force is little, friction factor is little, high temperature high voltage resistant, not placed restrictions on by specific pressure, also applicable to the flowing medium of band microparticle, has use value.

Description of drawings

Fig. 1 is the utility model embodiment 1 structure sectional view;

Fig. 2 is the utility model embodiment 2 structure sectional views.

Embodiment

Below in conjunction with drawings and Examples in detail the utility model is described in detail.

As shown in Figure 1, the compensation seal ball-valve of High Temperature High Pressure of the present utility model, constitute by valve body 31, valve gap 12 and control end, valve gap 12 is fixing with valve body 31 by bolt 17, valve body is equipped with through hole spheroid 25 in 31 chambeies, control end includes the valve rod 14 that is equipped with in valve gap 12 chambeies, valve rod 14 tops are connected with hand bright 1 by hexagon socket head cap screw 2, back of the body mother 3, pad 4, butterfly spring 5, spring 6, the outside, position is lined with support pads 7, skidding 8, soft seal assembly 9, sealing gasket 10 and hard sealing gasket 11 in the valve rod 14, be combined into steps type seal with valve rod 14, prevent external leakage.Fixedly Dou face valve seat 22, conical

slide valve seat

23,24 and the 25 coupling sealings of through hole spheroid are housed in its valve body 31 two ends through holes, and by adjusting cover 26, spring 30 and adjusting swivel nut 27 and regulate fixing, the outside, 14 times positions of valve rod is lined with spring 13, pad 16 and cooperates with spheroid 25 upper end portions, help spheroid 25 and 22,23,24 sealings of bivalve seat, force the gap between spheroid 25 and the

slip valve seat

23,24 to carry out repaying sealing from complementation.Because

bivalve seat

22,23,24 is conical surface, when spheroid 25 centers down during end movement, produce a kind of wedge power, can improve sealing.In addition,, make spheroid 25 upwards make trace movement, can reduce the friction between spheroid 25 and the

valve seat

22,23,24 by the bounce-back effect of spring 32.Be provided with cemented carbide guide spool 20 in valve rod 14 bottom parts, guide's spool 20 is meshed with spiral shell button in the valve rod 14 by external screw, guide's spool 20 outsides are provided with straight runner 19 and match with jackscrew 18 on the spheroid 25, and guide's spool 20 can only slide up or down.Guide's spool 20 underparts are the conical surface, seal coupling mutually with the cemented carbide guide valve seat 21 that is provided with in spheroid 25 upper end portions, when valve rod 14 rotations, have played the protecting against shock effect.Spheroid 25 lower ends are provided with spacing setting sleeve 28, and spheroid 25 can only be done 90 ° and rotatablely move, and are promptly opening or closed position.

The utility model working procedure is as follows: when handle 1 carries out suitable or rotates counterclockwise, coupled valve rod 14 is also done suitable or is rotated counterclockwise, can only move up or down and link the guide's spool 20 that connects with valve rod 14 spiral shells, when 14 inverse time of valve rod direction is rotated 90 °, at first be that guide's spool 20 is opened, import and export two ends pressure medium difference in the valve body 31 is disappeared, and spheroid 25 is avoided the influence of specific pressure, and is light laborsaving because of not increasing torque force during spheroid 25 rotations.When valve rod 14 rotated 90 ° again, because of being subjected to setting sleeve 28 spacing, spheroid 25 carried out 90 ° of rotations, and this moment, spheroid 25 through holes were consistent with the entrance end direction of valve body 31, were opening state, media flow, otherwise, then be closed condition.Therefore its handle 1 can only rotate in 180 scopes.Otherwise, rotating 90 ° when valve rod 14 up time directions, its guide's spool 20 is closed, and carries out 90 ° of rotations again, and its spheroid 25 is also followed and is carried out 90 ° of rotations, and this moment, the entrance end direction of spheroid 25 through holes and valve body 31 was inconsistent, then was closed condition.In its operating process, its handle 1 can only rotate in 180 scopes.

The compensation seal ball-valve of High Temperature High Pressure of the present utility model, flow according to the conveyance fluid medium varies in size and the preparation process requirement of latus rectum greatly, as shown in Figure 2, its valve body 31 can be combined into by left, center, right three section 31-1,31-2,31-3, under be provided with setting sleeve 28, slidable adjustment screw 35 and have the sealing adjusting screw 34 of liner 33.

Claims

1, the compensation seal ball-valve of a kind of High Temperature High Pressure, by valve body (31), valve gap (12) and control end constitute, institute's valve gap (12) is fixing by bolt (17) and valve body (31), described valve body (31) is equipped with through hole spheroid (25) in the chamber, described control end includes the valve rod (14) that is equipped with in valve gap (12) chamber, valve rod (14) top is by hexagon socket head cap screw (2), the back of the body female (3), pad (4), butterfly spring (5), spring (6) is connected with hand bright (1), the outside, position is lined with support pads (7) in the valve rod (14), skidding (8), soft seal assembly (9), sealing gasket (10) and hard sealing gasket (11), it is characterized in that: in the through hole of described valve body (31) two ends fixedly Dou face valve seat (22) is housed, conical slide valve seat (23,24) with through hole spheroid (25) coupling, and by adjusting cover (26), spring (30) and adjustment swivel nut (27) are regulated fixing, described valve rod (14) is lined with spring (13) in the outside, position down, pad (16) cooperates with spheroid (25) upper end portion, be provided with cemented carbide guide spool (20) in valve rod (14) bottom part, guide's spool (20) is meshed with the interior spiral shell button of valve rod (14) by external screw, guide's spool (20) outside is provided with straight runner (19) and matches with jackscrew (18) on the spheroid (25), guide's spool (20) underpart is the conical surface, be complementary with the cemented carbide guide valve seat (21) that is provided with in spheroid (25) upper end portion, spheroid (25) lower end is provided with spacing setting sleeve (28).

2, the compensation seal ball-valve of High Temperature High Pressure according to claim 1, it is characterized in that: described valve body (31) is for to be combined into by three section of left, center, right (31-1,31-2,31-3), under be provided with setting sleeve (28), slidable adjustment screw (35) and have the sealing adjusting screw (34) of liner (33).