CN221170834U

CN221170834U - Manual ball valve and low-temperature container with same

Info

Publication number: CN221170834U
Application number: CN202321963608.5U
Authority: CN
Inventors: 马君; 陆嘉君; 王琪; 江章亮; 张金铮; 江涛; 曾富强
Original assignee: Zhangjiagang Furui Valve Co ltd
Current assignee: Zhangjiagang Furui Valve Co ltd
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2024-06-18
Anticipated expiration: 2033-07-25

Abstract

The application discloses a manual ball valve and a low-temperature container with the same, and relates to the technical field of valve sealing. The manual ball valve comprises: the valve body is provided with inlet and outlet channels on two sides, and a through valve cavity is arranged between the inlet and outlet channels; the valve cover is arranged in the access passage; the ball body is arranged in the valve cavity; the valve rod is arranged above the sphere, and the lower end of the valve rod is fixedly connected with the sphere; a ball lining is arranged between the valve cover and the ball body; the outer side of the ball lining is provided with a first gasket and a second gasket; an O-shaped ring I is arranged between the first gasket and the second gasket; a disc spring is arranged between the ball lining and the valve cover. According to the embodiment of the application, the double seal, namely the disc spring seal and the seal structure consisting of the first gasket, the second gasket and the first O-shaped ring are arranged on the ball lining, so that the double elasticity compensation of the ball lining is realized, and the sealing performance of the ball lining is ensured.

Description

Manual ball valve and low-temperature container with same

Technical Field

The application relates to the technical field of valve sealing, in particular to a manual ball valve and a low-temperature container with the manual ball valve.

Background

Along with the development of petrochemical industry, particularly the storage, transportation and wide application of ultralow temperature products such as liquefied natural gas, liquid oxygen, liquid nitrogen and the like, the requirements on ball valves applied under ultralow temperature working conditions are also higher and higher. Liquefied Natural Gas (LNG) is simply called, and the LNG is obtained by cooling gaseous natural gas to-162 ℃ under normal pressure, so that the natural gas is changed into liquid; a large number of ultra-low temperature ball valves are needed in the natural gas liquefaction process.

Sealing performance is one of the important indexes of valve quality, and the existing ultra-low temperature ball valve is usually sealed between a ball body and a valve seat by using a single sealing ring. For example, chinese patent application publication No. CN114033865A discloses a top-loading ultra-low temperature fixed ball valve and installation method, soft sealing rings are arranged on contact surfaces of front valve seat and rear valve seat with ball body, and the sealing effect of the front valve seat and rear valve seat in contact with ball body is ensured by the soft sealing rings.

In the technical scheme, the sealing surfaces between the valve seat and the ball body are in full-course contact, and the sealing surfaces are easy to wear in the rotation process of the ball body, so that the valve is leaked, and the service life of the ball valve is not long.

Disclosure of utility model

The application aims to provide a manual ball valve, which solves the problem that the sealing performance of the ball valve is reduced after the sealing surface is worn due to single sealing structure in the existing ball valve.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme: a manual ball valve comprising: the valve body is provided with inlet and outlet channels on two sides, and a through valve cavity is arranged between the inlet and outlet channels; the valve cover is arranged in the access passage; the ball body is arranged in the valve cavity; the valve rod is arranged above the sphere, and the lower end of the valve rod is fixedly connected with the sphere; a ball lining is arranged between the valve cover and the ball body; the outer side of the ball lining is provided with a first gasket and a second gasket; an O-shaped ring I is arranged between the first gasket and the second gasket; a disc spring is arranged between the ball lining and the valve cover.

In the technical scheme, the double-seal structure comprising the disc spring seal, the first gasket, the second gasket and the first O-shaped ring is arranged on the ball lining, so that double-elasticity compensation of the ball lining is realized, and the sealing performance of the ball lining is ensured.

Further, according to an embodiment of the present application, a sphere base is provided below the sphere.

Further, according to an embodiment of the application, a fifth gasket and a sixth gasket are arranged between the valve stem and the valve body.

Further, according to an embodiment of the application, an O-ring is provided between the valve stem and the valve body.

Further, according to an embodiment of the present application, the upper end of the valve rod is provided with a handle.

Further, according to an embodiment of the present application, a handle cover is provided above the handle.

Further, according to the embodiment of the application, the device further comprises a limiting adjusting piece, an adjusting shell, a rotating piece, a rotating limiting piece and an anti-falling piece, wherein the adjusting shell is sleeved on the surface of the fixed knob, the fixed knob is of an I-shaped structure, the lower end of the fixed knob is provided with a fixed groove, an internal thread is arranged in the fixed groove and is in threaded fit with the top end of the manual ball valve, the adjusting shell is fixedly sleeved at the middle end of the fixed knob and is coaxially arranged with the fixed knob, and the rotating piece and the rotating limiting piece are arranged on the surfaces of the rotating handle and the fixed knob and limit the rotating handle anticlockwise.

In order to achieve the above purpose, the embodiment of the application also discloses a use method of the manual ball valve, which comprises the following steps:

The handle is rotated to drive the valve rod to rotate, so that the ball body is driven to rotate;

When the ball body rotates to the on position, the pipeline is connected, and the liquid substance passes through; conversely, the pipeline is cut off

Further, according to the embodiment of the application, when the valve is in operation, the disc spring in the ultralow temperature state contracts, and the spring corresponding to the ball lining rebounds, so that the ball lining and the valve body are in sealing contact all the time.

In order to achieve the above object, the embodiment of the application also discloses a cryogenic device, which is provided with the manual ball valve.

Compared with the prior art, the application has the following beneficial effects: according to the application, the double seal, namely the disc spring seal and the seal structure consisting of the first gasket, the second gasket and the first O-shaped ring are arranged on the ball lining, so that the double elasticity compensation of the ball lining is realized, and the sealing performance of the ball lining is ensured.

Drawings

The application will be further described with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a manual ball valve according to the present application.

FIG. 2 is a schematic perspective view of a manual ball valve according to the present application;

FIG. 3 is a schematic top view of a partial perspective view of a manual ball valve of the present application;

FIG. 4 is a schematic view of a partial bottom perspective of a manual ball valve of the present application;

FIG. 5 is a schematic perspective view of an adjusting member;

Fig. 6 is a schematic cross-sectional perspective view of the adjusting member.

In the accompanying drawings

1. Valve cover 2, ball lining 3 and washer I

4. O-shaped ring I5, valve body 6 and gasket II

7. Disc spring 8, sphere base 9 and gasket three

10. O-shaped ring II 11, gasket six 12 and O-shaped ring III

13. Bearing 14, ball 15, valve rod

16. O-shaped ring IV 17, gasket IV 18 and gasket V

19. Handle 20, handle cover 21 and limiting column

22. Positioning groove 23, positioning column 24 and steel wire rope

25. Pawl 26, adjusting housing 27, fixing groove

28. Fixing knob 29, ratchet 30 and limit groove

31. Spring plate 32, fixed shaft

Detailed Description

In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

[ Example 1]

As shown in fig. 1-2, the application discloses a manual ball valve, which comprises a valve body 5, a valve cover 1, a ball 14, a ball base 8 and a valve rod 15. The two sides of the valve body 1 are provided with an access passage, and the valve cover 1 is arranged in the access passage through threads. A through valve cavity is arranged between the inlet and outlet passages, the ball 14 is arranged in the valve cavity, the ball base 8 is arranged below the ball 14, the valve rod 15 is arranged above the ball 14, the valve rod 15 is fixedly connected with the ball 14, and the ball 14 is driven to rotate by rotating the valve rod.

Further, an anti-leakage groove is arranged on the periphery of the end part of the valve cover 1, and the edge of the anti-leakage groove is propped against the inner wall of the access passage. An O-shaped ring III 12 is arranged in the leakage prevention groove to play a role in sealing. Outside the O-shaped ring III 12 is provided with

A ball lining 2 is also arranged between the valve cover 1 and the ball 14, and the main body of the ball lining 2 is a metal piece with a hollow structure. Specifically, the ball bushing 2 has a hollow tubular structure, one end of which is inserted into the valve cover 1, and the other end of which contacts the ball 14.

The outside cover is equipped with packing ring one 3 and packing ring two 6, and packing ring one 3 and packing ring two 6 adopt novel polymer material, when playing sealed effect, guarantee that the spheroid operation is smoother. Further, the sealing between the ball lining 2 and the valve body 5 is further ensured by the O-shaped ring I4 between the first gasket 3 and the second gasket 6.

Between the ball bushing 2 and the valve cap 1, there is also a disc spring 7. The disc spring 7 can apply a compensating force to the ball lining when the ball valve is in operation and the ball lining is contracted at a low temperature state, so that a better sealing effect is obtained.

Between the ball valve base 8 and the valve body 5 are also a third gasket 9 and a second O-ring 10 for ensuring the seal between the ball valve base 8 and the valve body 5.

Between the valve rod 15 and the valve body 5, a washer five 17 and a washer six 18 are provided for preventing the valve rod from rotating eccentrically when the ball valve is opened and closed, resulting in leakage of medium. An O-ring III 16 is also provided to prevent leakage of medium from the valve stem during operation of the ball valve.

Bearings 13 are provided at the upper and lower ends of the ball 14 to prevent the ball from rotating eccentrically when the ball valve is opened and closed.

The upper end of the valve rod 15 is provided with a handle 19 and a handle cover 20, which mainly realize the transmission of the handle and the ball body and play a limiting role.

[ Example 2]

The application also discloses a use method of the manual ball valve, which comprises the following steps:

1) The handle is rotated to drive the valve rod to rotate, so that the ball body is driven to rotate;

2) When the ball body rotates to the on position, the pipeline is connected, and the liquid substance passes through; otherwise, the pipeline is cut off;

When the valve is in operation, the disc spring in the ultralow temperature state contracts, and the spring corresponding to the ball lining rebounds, so that the ball lining and the valve body are in sealing contact all the time.

[ Example 3]

On the basis of the embodiment 1, the manual ball valve further comprises:

the positioning groove 22 is formed on the surface of the rotary handle 19;

the positioning column 23 is fixed on the top surface of the manual ball valve; and

Limiting adjusting piece, including fixed knob 28, the regulation casing 26 that fixed knob 28 surface cover was established, rotating the piece, rotate locating part and anti-drop piece, fixed knob 28 is "worker" font structure, fixed slot has been seted up to fixed knob 28 lower extreme, and the internal thread has been seted up to fixed slot inside, and with manual ball valve top screw-thread fit, the fixed cover of regulation casing 26 is in fixed knob 28 middle-end, and set up with fixed knob 28 coaxial center, rotate the piece, rotate the locating part setting at rotating handle 19 and fixed knob 28 surface, and anticlockwise spacing to rotating handle 19.

The positioning groove 22 and the positioning column 23 are matched to limit ninety degrees of rotation of the fixed groove 27, so that the rotary handle 19 is more accurate to open and close, and the adjusting piece is installed on the top end of the manual ball valve through the threaded connection of the fixed knob 28 and the manual ball valve.

In order to realize the simultaneous rotation of the rotary handle 19 and the ratchet 29, the rotary member comprises the ratchet 29, a limit groove 30 formed on the surface of the ratchet 29 and a limit column 21 matched with the limit groove 30, wherein the limit column 21 is fixed on the upper surface of one side of the rotary handle 19 close to the manual ball valve, the ratchet 29 is arranged in the adjusting shell 26 and sleeved on the outer surface of the fixed knob 28; the ratchet 29 and the fixed knob 28 are coaxially arranged, the ratchet 29 rotates by taking the axial lead of the fixed knob 28 as the circle center, two groups of limiting columns 21 are arranged, a plurality of groups of limiting grooves 30 are formed, and the ratchet 29 is circumferentially distributed by taking the axial lead of the fixed knob 28 as the circle center.

The ratchet 29 is sleeved on the outer side surface of the fixed knob 28, so that the ratchet 29 can rotate freely, and a plurality of groups of limit grooves 30 arranged on the surface of the ratchet 29 are in plug-in fit with the limit posts 21, so that not only can the adjusting piece be installed and limited, but also the ratchet 29 can be driven to rotate together when the rotating handle 19 rotates.

In order to realize the regulation to the rotation angle of the rotary handle 19, the rotation limiting part comprises a steel wire rope 24, a pawl 25, a spring plate 31 and a fixed shaft 32, wherein the fixed shaft 32 is arranged inside the adjusting shell 26, the two ends of the fixed shaft are connected with the upper inner wall and the lower inner wall of the adjusting shell 26, the fixed shaft 32 is provided with two groups, the pawl 25 is sleeved on the outer side surface of one group of fixed shafts 32, the spring plate 31 is sleeved on the outer side surface of the other group of fixed shafts 32, and one end of the spring plate 31, which abuts against the pawl 25, always contacts with the ratchet 29, so that the ratchet 29 is limited clockwise. The pawl 25 is connected to the positioning post 23 by a wire rope 24.

The pawl 25 is abutted against teeth provided on the outer side surface of the ratchet 29 through the elastic piece 31, thereby preventing the rotation handle 19 from rotating clockwise, and when the rotation handle 19 rotates counterclockwise, the counterclockwise rotation angle of the rotation handle 19 can be accurately adjusted by providing teeth of different angles on the surface of the ratchet 29.

On the basis of the embodiment 1, in order to ensure that the turning handle 19 can turn clockwise, a fixing groove 27 is formed on the surface of the adjusting housing 26, and the other end of the pawl 25 extends out of the adjusting housing 26 through the fixing groove 27.

By pulling the pawl 25 extending outside the adjustment housing 26, the rotary handle 19 can be rotated clockwise by canceling the abutment of the pawl 25 against the ratchet teeth 29.

While the foregoing describes illustrative embodiments of the present application so that those skilled in the art may understand the present application, the present application is not limited to the specific embodiments, and all applications and creations utilizing the inventive concepts are within the scope of the present application as long as the modifications are within the spirit and scope of the present application as defined and defined in the appended claims to those skilled in the art.

Claims

1. A manual ball valve, comprising:

The valve body is provided with inlet and outlet channels on two sides, and a through valve cavity is arranged between the inlet and outlet channels;

the valve cover is arranged in the access passage;

the ball body is arranged in the valve cavity;

the valve rod is arranged above the sphere, and the lower end of the valve rod is fixedly connected with the sphere;

a ball lining is arranged between the valve cover and the ball body; the outer side of the ball lining is provided with a first gasket and a second gasket; an O-shaped ring I is arranged between the first gasket and the second gasket; a disc spring is arranged between the ball lining and the valve cover.

2. A manual ball valve according to claim 1, wherein a ball seat is provided below the ball.

3. A manual ball valve according to claim 1, wherein a fifth gasket and a sixth gasket are provided between the valve stem and the valve body.

4. A manual ball valve according to claim 1, wherein an O-ring is provided between the valve stem and the valve body.

5. A manual ball valve according to claim 1, wherein the upper end of the valve stem is provided with a handle.

6. The manual ball valve according to claim 5, wherein a handle cover is provided above the handle.

7. Cryogenic apparatus having a manual ball valve according to any one of claims 1-6.