CN210069011U

CN210069011U - Ball valve with main sealing pressure compensation function

Info

Publication number: CN210069011U
Application number: CN201920285247.0U
Authority: CN
Inventors: 童成彪; 石中华
Original assignee: CHANGSHA RUNWEI ELECTRICAL TECHNOLOGY CO LTD; Hunan Agricultural University
Current assignee: CHANGSHA RUNWEI ELECTRICAL TECHNOLOGY CO LTD; Hunan Agricultural University
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2020-02-14
Anticipated expiration: 2029-03-06

Abstract

The utility model discloses a ball valve with main seal pressure compensation function, including the valve body with install the valve at the valve body inner chamber, be equipped with the sealing ring between valve body and the valve, install the sealing washer that is located between sealing ring and the valve on the valve, the sealing washer is close to one side of valve and sets up the pressure tank that advances water when the valve closure state and pressurize and order about the sealing washer and produce deformation and sealing ring extrusion sealing connection. The ball valve has the advantages of low cost, easy realization, enhanced sealing specific pressure and improved sealing capability.

Description

Ball valve with main sealing pressure compensation function

Technical Field

The utility model relates to a ball valve sealing technique especially relates to a ball valve with main seal pressure compensation function.

Background

In China, the ball valve is widely applied to industries such as petroleum refining, long-distance pipelines, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel and the like, and plays a significant role in national economy. The ball valve is mainly used for cutting off, distributing and changing the flowing direction of a medium in a pipeline and has the characteristics of small fluid resistance, quick opening and closing and tight closing.

The fixed ball valve is a ball valve, the acting force of the medium pressure on the ball body is completely transmitted to the bearing, the ball body cannot move towards the valve seat, and therefore the valve seat cannot bear overlarge pressure, the torque is small, the sealing is stable, and the service life is long. Generally, the ball valve adopts a spring to pre-tighten a valve seat, the valve seat is arranged in a floating mode, the spring provides sealing pre-tightening force, and when the valve is closed, a medium pushes the valve seat to ensure that the valve seat is matched with a ball body in a sealing mode. However, this structure has many parts, troublesome installation and high cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a low cost, easily realize, can strengthen sealed specific pressure, can improve the ball valve that has main seal pressure compensation function of sealing ability.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a ball valve with main seal pressure compensation function, includes the valve body and installs the valve at the valve body inner chamber, be equipped with the sealing ring between valve body and the valve, install the sealing washer that is located between sealing ring and the valve on the valve, the water pressure tank that the sealing washer produces deformation and sealing ring extrusion sealing connection is ordered to the pressure of intaking when the valve closure state is seted up to one side that the sealing washer is close to the valve.

As a further improvement of the above technical solution:

the sealing ring comprises a connecting part and a deformation tongue which are connected into a whole, the connecting part is fixedly connected with the valve through a bolt, the water pressure groove is formed in the deformation tongue, and the deformation tongue deforms and is connected with the sealing ring in an extrusion sealing mode when water enters the water pressure groove and is pressurized.

The water pressure groove comprises a pressure groove and a water inlet hole, the pressure groove and the water inlet hole are both arranged on the deformation tongue, and the water inlet hole is communicated with the pressure groove and the inner cavity of the valve body.

The valve body is provided with a support ring, the sealing ring is arranged in an installation gap formed by the support ring and the valve body and has transverse freedom degree, and the support ring is provided with a transverse cavity.

The horizontal cavity comprises a horizontal pressing gap, a horizontal water inlet channel and a first vertical water inlet channel, the horizontal pressing gap is arranged between the sealing ring and the supporting ring, the horizontal water inlet channel and the first vertical water inlet channel are arranged on the supporting ring and are communicated with each other, and the horizontal water inlet channel is communicated with the horizontal pressing gap.

The valve body is provided with a vertical cavity.

The vertical cavity comprises a vertical pressure applying gap and a second vertical water inlet channel, the vertical pressure applying gap is arranged between the sealing ring and the valve body, and the second vertical water inlet channel is arranged on the valve body and communicated with the vertical pressure applying gap.

And a sealing gasket fixed on the valve body is arranged between the top of the sealing ring and the valve body.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses a ball valve with main seal pressure compensation function, the sealing washer is close to one side of valve and has been seted up the water pressure tank, leads to the back of sealing washer with valve water pressure, and the deformation displacement of keeping away from the valve can take place for the sealing washer under the effect of water pressure to paste tightly on the sealing ring, the water pressure compensation of utilizing of initiative promptly plays the effect that strengthens sealed specific pressure, improves seal ability.

2. The utility model discloses a ball valve with main seal pressure compensation function plays the effect that improves sealing capacity under the prerequisite that does not increase the material, and the implementation cost is low.

3. The utility model discloses a ball valve with main seal pressure compensation function, its whole processing property is good, realizes easily.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is an enlarged schematic view of fig. 2 at B.

The reference numerals in the figures denote:

1. a gasket; 2. a shutter; 3. a valve body; 31. a support ring; 4. a seal ring; 5. a seal ring; 51. a water pressure tank; 511. a pressure tank; 512. a water inlet hole; 52. a connecting portion; 53. a deformable tongue; 6. a transverse cavity; 61. a transverse pressure application gap; 62. a transverse water inlet channel; 63. a first vertical water inlet channel; 7. a vertical cavity; 71. a vertical pressure application gap; 72. the second vertical water inlet channel.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

Fig. 1 to fig. 3 show an embodiment of the utility model discloses ball valve with main seal pressure compensation function, including valve body 3 and the valve 2 of installing at the 3 inner chambers of valve body, be equipped with sealing ring 4 between valve body 3 and the valve 2, install the sealing washer 5 that is located between sealing ring 4 and the valve 2 on the valve 2, sealing washer 5 is close to one side of valve 2 and has seted up the pressure tank 51 that advances water when valve 2 closed condition and fill pressure and order about sealing washer 5 to produce deformation and sealing ring 4 extrusion sealing connection. According to the ball valve with the structure, when the valve 2 is closed, the sealing ring 5 and the sealing ring 4 are driven to form sealing, the water pressure groove 51 is formed in one side, close to the valve 2, of the sealing ring 5, the water pressure of the valve is led to the back of the sealing ring 5, and the sealing ring 5 can generate deformation displacement far away from the valve 2 under the action of the water pressure and accordingly is tightly attached to the sealing ring 4, namely the water pressure compensation effect is actively utilized, and the effects of enhancing the sealing specific pressure and improving the sealing capacity are achieved; the utility model discloses under the prerequisite that does not increase the material, play the effect that improves sealing ability, the implementation cost is low. The whole process performance is good and the realization is easy.

In this embodiment, the sealing ring 5 includes a connecting portion 52 and a deformation tongue 53 connected as a whole, the connecting portion 52 is fixedly connected with the valve 2 through a bolt, the hydraulic pressure groove 51 is provided on the deformation tongue 53, and the deformation tongue 53 is deformed to be connected with the sealing ring 4 in an extrusion sealing manner when the hydraulic pressure groove 51 is filled with water and pressurized. In the structure, the connecting part 52 is fixedly connected with the valve 2 through a bolt so as to ensure that the main structure of the sealing ring 5 cannot generate a gap with the valve 2, and the deformation tongue 53 is deformed to be connected with the sealing ring 4 in a pressing and sealing manner when the water pressure groove 51 is filled with water and pressurized.

In this embodiment, the hydraulic pressure tank 51 includes a pressure tank 511 and a water inlet 512, the pressure tank 511 and the water inlet 512 are both disposed on the deformation tongue 53, and the water inlet 512 communicates the pressure tank 511 with the inner cavity of the valve body 3. In the structure, a plurality of water inlet holes 512 are arranged on the deformation tongue 53 in each direction, and water flow enters the pressure groove 511 from the water inlet holes 512, so that the deformation tongue 53 is driven to generate deformation displacement far away from the valve 2 and is tightly attached to the sealing ring 4.

In this embodiment, the valve body 3 is provided with a support ring 31, the seal ring 4 is installed in an installation gap formed between the support ring 31 and the valve body 3 and has a lateral degree of freedom, and the support ring 31 is provided with a lateral cavity 6. In this configuration. The sealing ring 4 has a lateral degree of freedom in the installation gap, i.e. it forms a movable sealing relationship with the sealing ring 5, while the lateral cavity 6 can lead the water flow to the side of the sealing ring 4 close to the support ring 31, so that it forms a lateral water pressure on the side of the sealing ring 4 close to the support ring 31, which is just opposite to the pressure of the deformation tongue 53, thus making the sealing strength of the deformation tongue 53 and the sealing ring 4 higher.

In this embodiment, the transverse cavity 6 includes a transverse pressing gap 61, a transverse water inlet channel 62 and a first vertical water inlet channel 63, the transverse pressing gap 61 is disposed between the sealing ring 4 and the supporting ring 31, the transverse water inlet channel 62 and the first vertical water inlet channel 63 are disposed on the supporting ring 31 and are communicated with each other, and the transverse water inlet channel 62 is communicated with the transverse pressing gap 61. In this structure, the water flow enters from the first vertical water inlet channel 63 and is redirected to the transverse pressure applying gap 61 through the transverse water inlet channel 62, so as to push the sealing ring 4 to cling to the deformation tongue 53.

In this embodiment, the valve body 3 is provided with a vertical cavity 7. The vertical cavity 7 can guide water flow to the side of the sealing ring 4 close to the valve body 3, so that vertical water pressure is formed on the side of the sealing ring 4 close to the support ring 31, the pressure drives the sealing ring 4 downwards, and the sealing strength of the deformation tongue 53 and the sealing ring 4 is higher.

In this embodiment, the vertical cavity 7 includes a vertical pressure applying gap 71 and a second vertical water inlet channel 72, the vertical pressure applying gap 71 is disposed between the sealing ring 4 and the valve body 3, and the second vertical water inlet channel 72 is disposed on the valve body 3 and is communicated with the vertical pressure applying gap 71. In this structure, the water flow enters the vertical pressing gap 71 through the second vertical water inlet channel 72, so as to push the sealing ring 4 to cling to the deformation tongue 53.

In this embodiment, a sealing gasket 1 fixed on the valve body 3 is arranged between the top of the sealing ring 4 and the valve body 3. The seal 1 has a sealing effect in one direction and on the other hand prevents wear of the sealing ring 4.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a ball valve with main seal pressure compensation function, includes valve body (3) and installs valve (2) at valve body (3) inner chamber, its characterized in that: be equipped with sealing ring (4) between valve body (3) and valve (2), install on valve (2) and be located sealing ring (5) between sealing ring (4) and valve (2), intaking when valve (2) closed condition in sealing ring (5) and pressurizing and order about sealing ring (5) and produce deformation and sealing ring (4) extrusion sealing connection's water pressure tank (51) has been seted up to one side that is close to valve (2).

2. A ball valve having a primary seal pressure compensating function according to claim 1, wherein: sealing washer (5) are including connecting portion (52) and deformation tongue (53) as an organic whole, connecting portion (52) are through bolt and valve (2) fixed connection, water pressure tank (51) are seted up on deformation tongue (53), and when water pressure tank (51) intake pressurized deformation tongue (53) produce deformation and sealing ring (4) extrusion sealing connection.

3. A ball valve having a primary seal pressure compensating function according to claim 2, wherein: the water pressure tank (51) comprises a pressure tank (511) and a water inlet hole (512), the pressure tank (511) and the water inlet hole (512) are both arranged on the deformation tongue (53), and the water inlet hole (512) is communicated with the pressure tank (511) and the inner cavity of the valve body (3).

4. A ball valve having a main seal pressure compensating function according to any one of claims 1 to 3, wherein: be equipped with support ring (31) on valve body (3), install in the installation clearance that support ring (31) and valve body (3) formed and have horizontal degree of freedom sealing ring (4), be equipped with horizontal cavity (6) on support ring (31).

5. The ball valve having a main seal pressure compensating function according to claim 4, wherein: the horizontal cavity (6) comprises a horizontal pressing gap (61), a horizontal water inlet channel (62) and a first vertical water inlet channel (63), the horizontal pressing gap (61) is arranged between the sealing ring (4) and the supporting ring (31), the horizontal water inlet channel (62) and the first vertical water inlet channel (63) are arranged on the supporting ring (31) and are communicated with each other, and the horizontal water inlet channel (62) is communicated with the horizontal pressing gap (61).

6. The ball valve having a main seal pressure compensating function according to claim 5, wherein: and a vertical cavity (7) is arranged on the valve body (3).

7. The ball valve having a main seal pressure compensating function according to claim 6, wherein: the vertical cavity (7) comprises a vertical pressure applying gap (71) and a second vertical water inlet channel (72), the vertical pressure applying gap (71) is arranged between the sealing ring (4) and the valve body (3), and the second vertical water inlet channel (72) is arranged on the valve body (3) and communicated with the vertical pressure applying gap (71).

8. A ball valve having a main seal pressure compensating function according to any one of claims 1 to 3, wherein: and a sealing gasket (1) fixed on the valve body (3) is arranged between the top of the sealing ring (4) and the valve body (3).

9. The ball valve having a main seal pressure compensating function according to claim 7, wherein: and a sealing gasket (1) fixed on the valve body (3) is arranged between the top of the sealing ring (4) and the valve body (3).