CN2577062Y

CN2577062Y - Frictionless high-temperature high-pressure ball valve

Info

Publication number: CN2577062Y
Application number: CN 02243238
Authority: CN
Inventors: 孟永康; 王建敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-22
Filing date: 2002-07-22
Publication date: 2003-10-01
Anticipated expiration: 2012-07-22

Abstract

The utility model relates to a high-temperature high-pressure ball valve without friction, which is composed of a valve body, a valve cover, a sealed gasket and a control end, wherein, a through hole ball body, an elastic valve seat and a joint bearing are arranged in a cavity of the valve body, and the control end comprises a valve rod arranged in the cavity of the valve cover, the hard sealed gasket out of the valve rod, a sealed assembly, a sealed regulating sleeve, a bearing, supporting blocks, regulating nuts, a handle at one end part, a gland bush and fastening bolts. The lower end of the valve rod having a square head is embedded with an inner square hole in the upper part of a supporting sleeve, the middle part of the supporting sleeve is provided with a cross pin matched and connected with a concave slot in an upper end column of the ball body, a column ball surface at the upper end of the ball body is provided with a spring and a spring pin which are matched and connected with straight slots in the lower part of the supporting sleeve, and two outer sides of the lower part of the supporting sleeve are provided with the supporting blocks. The elastic valve seat is welded with a long tube from the inner side of a valve seat body, and the valve seat body is provided with an inner side slot and an outer side slot. The ball valve of the utility model having the advantages of no accumulated media in the valve body, no gas expansion, no friction and small torque force is suitable for high-temperature high-pressure flowing medium pipelines.

Description

There is not friction High Temperature High Pressure ball valve

Technical field

The utility model relates to a kind of nothing friction High Temperature High Pressure ball valve that is applicable to water, mud, chemical industry, electric power, metallurgy, papermaking, oil, natural gas transport.

Background technique

Used ball valve can only be applicable in the pipeline and open and close under the fluid normal temperature and pressure situation at present, when fluid temperature (F.T.) and pressure are higher than routine, produce hot affinity, it is hard that valve is opened and closed, and driving torque power increases, because of spool produces friction with valve seat in rotation process, sealing wear is serious, causes leakage, easily accumulates media expansion and gas in the valve body and expands, hindered the rotation of spool, thereby can't in the high-temperature, high pressure fluid medium pipeline, use.

The model utility content

The purpose of this utility model is to provide does not accumulate medium, no gas and expands, do not have friction, nothing friction High Temperature High Pressure ball valve that torque force is little in a kind of valve body.

The purpose of this utility model realizes by following technological scheme: a kind of nothing friction High Temperature High Pressure ball valve, by valve body, valve gap, sealing gasket and control end constitute, described valve body is equipped with through hole spheroid and elastic seat in the chamber, joint shaft bearing, described control end includes the capping of leading of being equipped with and being fixed on its lower end in the valve cover cavity, supporting sleeve, middle valve rod, the hard sealing gasket that the valve rod outside is lined with, underlay, black box, pad, the sealing adjustment sleeve, bearing, dust-proof cover, the back of the body is female, anchor plate, the handle that adjusting nut and end thereof are connected with valve rod, gland, clamping bolt, its described valve rod lower end be square toes with the interior square hole on supporting sleeve top mutually embedding connect, described supporting sleeve middle part is provided with on lateral pin and the spheroid newel post's inner groovy and mates and link, the straight trough coupling that the post sphere place of institute spheroid upper end is provided with in spring and bullet pin and the supporting sleeve bottom links, two outsides, described supporting sleeve bottom are provided with a piece of deviation post, and it is inboard to be in bonnet lower both sides edge circle.

In above-mentioned, described elastic seat is welded with a long tube by the valve body inboard, it is provided with certain slit between the two, the long tube the other end and the welding of valve outlet end, described valve body is provided with inner side slot and outer side slot, and built-up welding has the cemented carbide sealing surface that is complementary with through hole spheroid face shape on the valve body inboard.

The utility model adopts above-mentioned design proposal, does not accumulate in its valve body that medium, no gas expand, do not have friction, do not have wearing and tearing, torque force is little, is applicable to High Temperature High Pressure flowing medium pipeline, has use value.

Description of drawings

Fig. 1 is the utility model structure sectional view;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is an elastic seat schematic representation of the present utility model.

Embodiment

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

As Figure 1-3, a kind of nothing friction High Temperature High Pressure ball valve, by valve body (28), valve gap (19), sealing gasket (24) and control end constitute, through hole spheroid (23) and elastic seat (26) are housed in described valve body (28) chamber, joint shaft bearing (14), described control end include its lower end is equipped with and is fixed in valve gap (19) chamber lead capping (13), supporting sleeve (11), middle valve rod (15), the hard sealing gasket (10) that the valve rod outside is lined with, underlay (9), black box (8), pad (7), sealing adjustment sleeve 18), bearing (17), dust-proof cover (16), the back of the body female (6), anchor plate (5), adjusting nut (4) and end thereof be connected with valve rod (15) handle (3), gland (2), clamping bolt (1), its described valve rod (15) lower end be square toes with the interior square hole on supporting sleeve (11) top mutually embedding connect, supporting sleeve (11) middle part is provided with lateral pin (21) and the last newel post of spheroid (23) inner groovy coupling links, after impelling spheroid (23) to revolve to turn 90 degrees, continue rotation 40 degree by valve rod (15) again, for making spheroid (23) produce swing, and the post sphere place on spheroid (23) is provided with spring and bullet pin (22), link with the coupling of the straight trough in tension and supporting sleeve (11) bottom, impel supporting sleeve (11) when resetting, to make spheroid (23) advance to reset position, guaranteed that supporting sleeve when closing (11) continues oscillating quantity, the function that promptly locks.Two outsides, supporting sleeve (11) bottom are provided with a piece (12) of deviation post, be in valve gap (19) both sides, bottom Xiang Quan (20) inboard, with edge circle (20) Xiang Dingli, play fulcrum displacement effect, impel spheroid (23) to go up newel post and produce oscillating motion, the motion of valve rod (15) ROT13 0 degree reaches being close to or throwing off motion of spheroid (23) and elastic seat (26), as long as just can be finished closure or opening process.Spheroid (23) lower end is provided with swinging joint bearing (14) and regulates its purpose of cushion cover (27) and make spheroid (23) consistent and guarantee the rotation and the oscillating motion of spheroid (23) with valve seat (26) center.

As shown in Figure 4, described elastic seat (26) is welded with a long tube (29) by valve body (26) inboard, it between the two and be provided with certain slit (30), long tube (29) the other end and the welding of valve body (28) outlet end, described valve body (26) is provided with inner side slot (31) and outer side slot (32), built-up welding has the cemented carbide sealing surface (33) that is complementary with through hole spheroid (23) face shape on valve body (26) inboard, its effect is when the medium forward flow, spheroid (23) is close to sealing surface (33), because spheroid (23) is to do oscillating motion, in order to make spheroid (23) face and sealing surface (33) still be in preferable sealing state, elastic valve body this moment (26) just can play the regulating action of fine motion, when the medium reverse flow, because inner side slot (31) that valve body (26) is provided with and outer side slot (32) and long tube (29) stitch (30) with the space of valve seat (26), under pressure action of medium, make sealing surface of seat (33) produce trace movement, benefit has been appreciated the trace movement of spheroid (23), guarantee sealing, avoided the possibility of leaking.

The utility model working procedure is as follows: when handle (3) moves clockwise, coupled valve rod (15) drives supporting sleeve (11), driving through hole spheroid (23) by the lateral pin (21) at supporting sleeve (11) middle part revolves and turn 90 degrees, make spheroid (23) lead the orienting station of closing of capping (13), angular travel section when continuation rotation 40 is spent again is because the top power effect of a piece (12), spheroid this moment (23) can only be done oscillating motion, force spheroid (23) and elastic seat (26) to be close to, cut off media flow, be closed condition; When handle (3) motion counterclockwise, at first rotate 40 degree angular travel sections, prop up the exchange top power effect of piece (12) by both sides, make spheroid (23) off center, spheroid (23) produces the gap with elastic seat (26), continues to revolve to turn 90 degrees, and spheroid (23) through hole is consistent with pipe diameter, be opening state, media flow.Because of spheroid (23) has broken away from elastic seat (26) before turning 90 degrees revolving,, do not have wearing and tearing and has prolonged working life so spheroid (23) does not produce spin friction with elastic seat (26) in rotary course.

Claims

1, a kind of nothing friction High Temperature High Pressure ball valve, by valve body (28), valve gap (19), sealing gasket (24) and control end constitute, through hole spheroid (23) and elastic seat (26) are housed in described valve body (28) chamber, joint shaft bearing (14), described control end includes in valve gap (19) chamber central authorities valve rod (15) is housed, the hard sealing gasket (10) that the valve rod outside is lined with, underlay (9), black box) (8), pad (7), sealing adjustment sleeve (18), bearing (17), dust-proof cover (16), the back of the body female (6), anchor plate (5), the handle (3) that adjusting nut (4) and end thereof are connected with valve rod (15), gland (2), clamping bolt (1), it is characterized in that: what its lower end was housed and was fixed in described valve gap (19) chamber leads capping (13) and supporting sleeve (11), described valve rod (15) lower end be square toes with the interior square hole on supporting sleeve (11) top mutually embedding connect, described supporting sleeve (11) middle part is provided with lateral pin (21) and the last newel post of spheroid (23) inner groovy coupling links, the straight trough coupling that the post sphere place of described spheroid (23) upper end is provided with in spring and bullet pin (22) and supporting sleeve (11) bottom links, two outsides, described supporting sleeve (11) bottom are provided with a piece (12) of deviation post, are in valve gap (19) both sides, bottom Xiang Quan (20) inboard.

2, nothing friction High Temperature High Pressure ball valve according to claim 1, it is characterized in that: described elastic seat (26) is welded with a long tube (29) by valve body (26) inboard, it between the two and be provided with certain slit (30), long tube (29) the other end and the welding of valve body (28) outlet end, described valve body (26) is provided with inner side slot (31) and outer side slot (32), and built-up welding has the cemented carbide sealing surface (33) that is complementary with through hole spheroid (23) face shape on valve body (26) inboard.