Combined dismounting tool for a valve

Abstract

This utility model relates to the field of valve plugging technology, specifically disclosing a combined disassembly tool for valve plugging. The valve plugging includes a valve body, a valve cover, and a sealing assembly. The valve cover is disposed in the upper opening of the valve body, and the sealing assembly is disposed between the valve cover and the valve body. The combined disassembly tool includes a device for removing the valve cover from the valve body. The device includes a support plate, a first moving plate, a first driving member, and several first screws. The support plate has a first through hole, and the first moving plate has a second through hole corresponding to each first through hole. The support plate is mounted on the valve body, the first driving member is placed on the support plate, and the first moving plate is placed on the output end of the first driving member. The lower end of each first screw passes through the corresponding second and third through holes and is threaded to the valve cover. This utility model's disassembly tool uses a combined approach to remove the four-ring valve, the valve cover, and the sealing assembly between the valve cover and the valve body from the valve body, thereby improving disassembly efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of combined disassembly tools for valve plugging, specifically a combined disassembly tool for valve plugging. Background Technology

[0002] The plugging valve is mainly used at the inlet and outlet of the superheater and reheater of boilers in power plants and chemical plants. As an isolation device for boiler water pressure testing, it generally has two working states: pressure test state and running state. After the pressure test is completed, the internal plugging plate and other sealing components need to be removed, and then the guide pipe is installed into the valve body to restore the normal operation state. When the pressure test is carried out again, the guide pipe is removed and the plugging plate and other sealing components are reinstalled.

[0003] However, the current disassembly method for valve plugging involves temporarily setting up an electric hoist or manually disassembling the support plate, four-ring, valve cover, and sealing components inside the valve body. This method requires first removing the support plate and four-ring before the valve cover and the sealing components between the valve body and the valve cover can be removed. However, when removing the valve cover, the sealing components between the valve cover and the valve body expand due to long-term high-temperature operation, causing the gap between the valve body and the valve cover to be filled by the sealing components. As a result, when directly removing the valve cover, the valve cover will be blocked by the tension of the sealing components, resulting in a lot of time spent on disassembly and maintenance. Therefore, designing a combined disassembly tool for valve plugging can shorten the on-site disassembly and maintenance time, while also saving manpower and resources. Utility Model Content

[0004] The purpose of this utility model is to provide a combined disassembly tool for plugging valves, which solves the problems mentioned above, such as the sealing component expanding under long-term high temperature environment, causing the sealing component to fill the gap between the valve body and the valve cover, resulting in the valve cover being blocked by the tension of the sealing component when directly removing the valve cover, thus causing disassembly to consume a lot of time, and the problem that the current disassembly method occupies a lot of maintenance time.

[0005] To solve the above-mentioned technical problems, this utility model provides a combined disassembly tool for a valve plugging device. The valve plugging device includes a valve body, a valve cover, and a sealing assembly. The valve cover is disposed in the upper opening of the valve body, and the sealing assembly is disposed between the valve cover and the valve body. The combined disassembly tool includes a device for removing the valve cover from the valve body. The device includes a support plate, a first moving plate, a first driving component, and a plurality of first screws. The support plate has a plurality of third through holes corresponding to the first screws, and the first moving plate has a second through hole corresponding to each of the third through holes.

[0006] The support plate is used to be mounted on the valve body. The first driving member is placed on the support plate. The first moving plate is placed on the output end of the first driving member. The number of the first screws is equal to the number of the second through holes. The lower end of each first screw passes through the corresponding second through hole and third through hole and is used to be threaded to the valve cover. The upper end of each screw is provided with a first limiting nut that abuts against the upper surface of the first moving plate. The first driving member is used to drive the first moving plate, the first screws and the valve cover away from the valve body.

[0007] Furthermore, the device also includes a plurality of first limiting sleeves, second screws, and second limiting sleeves. The support plate has a plurality of third through holes. The plurality of first limiting sleeves are used to be disposed between the support plate and the valve body. Each second screw passes through the corresponding third through hole and the first limiting sleeve and is used to be threaded to the valve body. Its top is limited by a second limiting nut. Each second limiting sleeve is disposed between the support plate and the first moving plate. Each second limiting sleeve is sleeved on the outside of the corresponding second screw.

[0008] Furthermore, a four-ring is installed at the upper opening of the valve body, and the four-ring is located above the valve cover.

[0009] The combined disassembly tool also includes a second device for assisting in the disassembly of the four open rings. The second device includes a second moving plate, a second driving component, and several third screws. The second moving plate is also provided with fourth through holes corresponding to the several third screws. Several third limiting sleeves are provided between the second moving plate and the upper end face of the valve body. Each third screw passes through the fourth through hole and the corresponding third limiting sleeve and is used to be threaded to the valve body. Its top is limited by a third limiting nut. The second driving component is used to be mounted on the valve cover.

[0010] Furthermore, the valve cover has a first limiting hole in the middle that cooperates with the fixed end of the second driving member, and the lower end of the second moving plate has a second limiting hole in the middle that cooperates with the output end of the second driving member. When the second driving member is in working state, the output end of the second driving member cooperates with the second limiting hole.

[0011] Furthermore, each of the first limiting sleeves is provided with a corresponding first screw. Before the valve cover is removed and the first driving member is in its initial state, the lower end of the first moving plate abuts against each of the first limiting sleeves.

[0012] Furthermore, each of the third limiting sleeves is provided with a corresponding third screw, and when the four open rings are removed, the lower end of the second moving plate abuts against each of the third limiting sleeves.

[0013] Furthermore, the first limiting sleeve and the third limiting sleeve are either shared components or independent components.

[0014] Furthermore, the second screw and the third screw are shared components, and there are two second screws.

[0015] Furthermore, the support plate and the second movable plate are either shared components or independent components.

[0016] Furthermore, both the first driving component and the second driving component are either a jack or a telescopic cylinder.

[0017] The beneficial effects of this utility model are as follows: The disassembly tool of this utility model adopts a combined approach to disassemble the four-ring valve, valve cover, and sealing assembly between the valve cover and the valve body from the valve body. Specifically, device two is used to press down the valve cover, moving it away from the four-ring valve to facilitate its removal. Then, device one is used to disassemble the sealing assembly between the valve cover and the valve body, as well as the valve cover, from the valve body. This improves the disassembly efficiency of the disassembly tool, shortens the maintenance time for blocked valves, and solves the problem that existing disassembly tools are hindered by the tensioning force of the sealing assembly when directly removing the valve cover, resulting in a lot of time wasted on disassembly.

[0018] The second driving component, the first limiting hole, the second limiting hole, and the third limiting sleeve on the valve cover can effectively limit the second driving component to the middle of the valve cover, while keeping the second moving plate parallel to the valve cover and preventing any offset. This ensures that the second moving plate is subjected to uniform force, so that there will be no uneven contact between the third limiting sleeve and the second moving plate when the third limiting sleeve is placed.

[0019] The design of the first and third limiting sleeves as shared or independent parts allows for the reduction of disassembly steps and parts by simply adding some parts during operation, without the need to replace some parts, thereby improving disassembly efficiency and reducing costs. At the same time, they can also be used as separate parts. When pressing down the valve cover to assist in removing the four-ring valve, only the third limiting sleeve needs to be used, thus improving the versatility of the disassembly tool.

[0020] The second and third screws are shared components, so the same type of screw can be used. There is no need to worry about using the wrong screw during replacement and having to remove and reinstall it. This improves the installation efficiency of device one or device two, reduces the use of parts, and lowers disassembly costs. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a cross-sectional view of the device installed on the plug valve of this utility model.

[0023] Figure 2 This is a cross-sectional view of the plug valve of this utility model with device two installed;

[0024] In the diagram: 1-Blocking valve, 2-Device 1, 3-Device 2, 11-Valve body, 12-Valve cover, 13-Sealing assembly, 14-Four-ring open, 21-Support plate, 22-First limiting sleeve, 23-First moving plate, 24-First screw, 25-First driving component, 26-First limiting nut, 27-Second screw, 28-Second limiting sleeve, 29-Second limiting nut, 31-Second moving plate, 32-Third limiting sleeve, 33-Third screw, 34-Second driving component, 35-Third limiting nut, 122-First limiting hole, 211-First through hole, 231-Second through hole, 212-Third through hole, 311-Fourth through hole. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In one specific embodiment of this utility model, such as Figure 1-2 As shown, this utility model specifically discloses a combined disassembly tool for a valve plugging device. The valve plugging device 1 includes a valve body 11, a valve cover 12, and a sealing assembly 13. The valve cover 12 is disposed in the upper opening of the valve body 11, and the sealing assembly 13 is disposed between the valve cover 12 and the valve body 11. The combined disassembly tool includes a device 2 for removing the valve cover 12 from the valve body 11. The device 2 includes a support plate 21, a first moving plate 23, a first driving member 25, and a plurality of first screws 24. The support plate 21 has a plurality of third through holes 212 corresponding to the first screws 24, and the first moving plate 23 has a second through hole 231 corresponding to each third through hole 212. In this embodiment, the support plate 21 has a plurality of parallel third through holes 212 and first through holes 211, through which the first screws 24 and second screws 27 can pass.

[0027] The support plate 21 is used to be mounted on the valve body 11. The first drive member 25 is placed on the support plate 21. The first moving plate 23 is placed on the output end of the first drive member 25. The number of first screws 24 is equal to the number of second through holes 231. The lower end of each first screw 24 passes through the corresponding second through hole 231 and third through hole 212 and is used to be threaded to the valve cover 12. The upper end of each screw 24 is provided with a first limiting nut 26 that abuts against the upper end face of the first moving plate 23. The first drive member 25 is used to drive the first moving plate 23, the first screws 24 and the valve cover 12 away from the valve body 11.

[0028] Device 1 2 also includes several first limiting sleeves 22, second screws 27 and second limiting sleeves 28. Several third through holes 212 are provided on the support plate 21. Several first limiting sleeves 22 are used to be set between the support plate 21 and the valve body 11. Each second screw 27 passes through the corresponding third through hole 212 and first limiting sleeve 22 and is used to be threaded to the valve body 11. Its top is limited by the second limiting nut 29. Each second limiting sleeve 28 is set between the support plate 21 and the first moving plate 23. Each second limiting sleeve 28 is sleeved on the outside of the corresponding second screw 27.

[0029] In this embodiment, only the support plate 21, the first moving plate 23, the first driving member 25, several first screws 24 and the first limiting nut 26 can be installed. Alternatively, this part of the structure can be combined with the first limiting sleeve 22, the second screw 27, the second limiting sleeve 28 and the second limiting nut 29 and installed on the same valve body 11.

[0030] A four-ring 14 is installed at the upper opening of the valve body 11, and the four-ring 14 is located above the valve cover 12.

[0031] The combined disassembly tool also includes a second device 3 for assisting in the disassembly of the four-ring 14. The second device 3 includes a second moving plate 31, a second driving member 34, and several third screws 33. The second moving plate 31 is also provided with fourth through holes 311 corresponding to the several third screws 33. Several third limiting sleeves 32 are provided between the second moving plate 31 and the upper end face of the valve body 11. Each third screw 33 passes through the fourth through hole 311 and the corresponding third limiting sleeve 32 and is used to be threaded to the valve body 11. Its top is limited by a third limiting nut 35. The second driving member 34 is used to be mounted on the valve cover 12. The output end of the second driving member 34 extends out and is pushed away from the four-ring 14 by the reaction force of the second moving plate 31. In this embodiment, the second device 3 can be used as an independent disassembly tool.

[0032] The support plate 21 and the second movable plate 31 are either shared or independent components. The second screw 27 and the third screw 33 are shared components. There are two second screws 27. The shared components of the second screw 27 and the third screw 33 can be used with the same type of screw. There is no need to worry about using the wrong screw during replacement and having to disassemble and reassemble it. This improves the installation efficiency of device 1 2 or device 2 3, reduces the use of parts, and reduces disassembly costs.

[0033] The first limiting sleeve 22 and the third limiting sleeve 32 can be shared or independent parts. The shared or independent design of the first limiting sleeve 22 and the third limiting sleeve 32 can reduce the number of disassembly steps and parts by simply adding some parts during operation without replacing some parts, thereby improving disassembly efficiency. At the same time, they can also be used as separate parts. When the valve cover 12 is pressed down to assist in the removal of the four-ring 14, only the third limiting sleeve 32 needs to be used, thereby improving the multi-environment use of the disassembly tool.

[0034] In this embodiment, when assisting in the removal of the four open rings 14, it is preferable to use several first limiting sleeves 22 between the support plate 21 and the valve body 11, or it is preferable to use several third limiting sleeves 32 between the second moving plate 31 and the valve body 11.

[0035] In this embodiment, when the valve cover 12 is removed, several second limiting sleeves 28 can be installed between the first moving plate 23 and the valve body 11 or the support plate 21. In other embodiments, several second limiting sleeves 28 can be integrally formed with the first moving plate 23, or the second limiting sleeves 28 can be omitted.

[0036] The first driving component 25 and the second driving component 34 are both either jacks or telescopic cylinders. In this embodiment, the first driving component 25 and the second driving component 34 are preferably jacks.

[0037] The valve cover 12 has a first limiting hole 122 in the middle that cooperates with the fixed end of the second driving member 34, and the lower end of the second moving plate 31 has a second limiting hole in the middle that cooperates with the output end of the second driving member 34. When the second driving member 34 is in working state, the output end of the second driving member 34 cooperates with the second limiting hole.

[0038] The second driving member 25 and the first limiting hole 122 and the second limiting hole on the valve cover 12 can effectively limit the second driving member 25 in the middle of the valve cover 12, while making the second moving plate 31 parallel to the valve cover 12 and preventing it from shifting. This ensures that the second moving plate 31 is subjected to uniform force, so that the third limiting sleeve 32 will not have uneven contact with the second moving plate 31 when it is placed.

[0039] Each first limiting sleeve 22 is provided with a corresponding first screw 24. Before the valve cover 12 is removed and the first driving member 25 is in the initial state, the lower end of the first moving plate 23 abuts against each first limiting sleeve 22, that is, the upper and lower end faces of the first moving plate 23 abut against the first limiting nut 26 and the first limiting sleeve 22 respectively.

[0040] Each third limiting sleeve 32 is provided with a corresponding third screw 33. When the four-ring 14 is removed, the lower end of the second moving plate 31 abuts against each third limiting sleeve 32, that is, the upper and lower end faces of the second moving plate 31 abut against the third limiting nut 35 and the third limiting sleeve 32 respectively.

[0041] The disassembly tool of this utility model adopts a combined approach to remove the four-ring 14, valve cover 12, and sealing assembly 13 between valve cover 12 and valve body 11 from valve body 11. Device 2 3 is used to press down valve cover 12 to facilitate the removal of four-ring 14; then device 1 2 is used to remove sealing assembly 13 between valve cover 12 and valve body 11 and valve cover 12 from valve body 11. This improves the disassembly efficiency of the disassembly tool, shortens the maintenance time of blocked valves, and solves the problem that existing disassembly tools are blocked by the tension force of sealing assembly 13 when directly removing valve cover 12, resulting in a lot of time spent on disassembly.

[0042] The working process of this utility model is as follows:

[0043] When the lower end of the four-ring 14 is located within the sealing gap between the valve cover 12 and the valve body 11, and the four-ring 14 needs to be disassembled, the valve cover 12 must first be pressed down to move it away from the four-ring 14. Then, the lower end of each third screw 33 or second screw 27 should be threaded onto the valve body 11. Next, several third limiting sleeves 32 or first limiting sleeves 22 should be fitted onto the corresponding third screws 33 or second screws 27. Then, the fourth through hole 311 or first through hole 211 on the second moving plate 31 or support plate 21 should be passed through the corresponding third screw 33 or second screw 27, so that the lower end face of the second moving plate 31 or support plate 21 is flush with several... The third limiting sleeve 32 or the first limiting sleeve 22 abuts against each other, and then the third limiting nut 35 or the second limiting nut 29 is screwed onto the corresponding third screw 33 or the second screw 27. The third limiting nut 35 or the second limiting nut 29 is in contact with the upper end face of the second moving plate 31 or the support plate 21, and the second driving member 34 is placed on the valve cover 12. The output end of the second driving member 34 extends out and abuts against the second moving plate 31 or the support plate 21. After the second driving member 34 is subjected to the reaction force of the second moving plate 31 or the support plate 21, it presses the valve cover 12 down so that the valve cover 12 is separated from the four-opening ring 14 so that the four-opening ring 14 can be removed.

[0044] After removing the four-ring 14, retract the output end of the second drive unit 34 to remove it. When the valve cover 12 needs to be removed, the device used to assist in the removal of the four-ring 14 can be retained. First, thread the lower end of each first screw 24 to the valve cover 12, and put several second limiting sleeves 28 on the outside of the corresponding first screw 24. Then, pass the second through hole 231 on the first moving plate 23 through the corresponding first screw 24 so that the lower end face of the first moving plate 23 abuts against each second limiting sleeve 28. Finally, screw the first limiting nut 26 onto each first screw 24. The first limiting nut 26 is abutted against the upper end face of the first moving plate 23 to limit its position. The first driving member 25 is placed between the first moving plate 23 and the second moving plate 31 or the support plate 21. The output end of the first driving member 25 extends to push the first moving plate 23, the first limiting nut 26, the first screw 24, the valve cover 12 and the sealing assembly 3 on the valve cover 12 upward, so that the valve cover 12 and the sealing assembly 13 on the valve cover 12 are disengaged from the valve body 11, supporting the bottom of the valve cover 12. Then the disassembly tool is removed to remove the valve cover 12 from the valve body 11, completing the disassembly of the internal parts of the valve body 11.

[0045] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A combined disassembly tool for a plug valve, the plug valve (1) comprising a valve body (11), a valve cover (12), and a sealing assembly (13), the valve cover (12) being disposed within an upper opening of the valve body (11), and the sealing assembly (13) being disposed between the valve cover (12) and the valve body (11), characterized in that, The combined disassembly tool includes a device (2) for removing the valve cover (12) inside the valve body (11). The device (2) includes a support plate (21), a first moving plate (23), a first driving member (25), and a plurality of first screws (24). The support plate (21) has a plurality of third through holes (212) corresponding to the first screws (24). The first moving plate (23) has a second through hole (231) corresponding to each of the third through holes (212). The support plate (21) is used to be mounted on the valve body (11). The first drive member (25) is placed on the support plate (21). The first moving plate (23) is placed on the output end of the first drive member (25). The number of the first screws (24) is equal to the number of the second through holes (231). The lower end of each first screw (24) passes through the corresponding second through hole (231) and third through hole (212) and is used to be threaded to the valve cover (12). The upper end of the screw is provided with a first limiting nut (26) that abuts against the upper end face of the first moving plate (23). The first drive member (25) is used to drive the first moving plate (23), the first screw (24) and the valve cover (12) away from the valve body (11).

2. The combined removal tool for a blocked valve according to claim 1, wherein The device (2) further includes several first limiting sleeves (22), second screws (27) and second limiting sleeves (28). Several third through holes (212) are provided on the support plate (21). Several first limiting sleeves (22) are used to be disposed between the support plate (21) and the valve body (11). Each second screw (27) passes through the corresponding third through hole (212) and the first limiting sleeve (22) and is used to be threaded to the valve body (11). Its top is limited by a second limiting nut (29). Each second limiting sleeve (28) is disposed between the support plate (21) and the first moving plate (23). Each second limiting sleeve (28) is sleeved on the outside of the corresponding second screw (27).

3. The combined removal tool for a blocked valve according to claim 2, wherein A four-ring (14) is installed at the upper opening of the valve body (11), and the four-ring (14) is located above the valve cover (12). The combined disassembly tool also includes a second device (3) for assisting in the disassembly of the four open rings (14). The second device (3) includes a second moving plate (31), a second driving member (34), and several third screws (33). The second moving plate (31) is also provided with a fourth through hole (311) corresponding to each of the several third screws (33). Several third limiting sleeves (32) are provided between the second moving plate (31) and the upper end face of the valve body (11). Each third screw (33) passes through the fourth through hole (311) and the corresponding third limiting sleeve (32) and is used to be threaded to the valve body (11). Its top is limited by a third limiting nut (35). The second driving member (34) is used to be set on the valve cover (12).

4. A combined disassembly tool for plugging valves according to claim 3, characterized in that, The valve cover (12) has a first limiting hole (122) in the middle that cooperates with the fixed end of the second driving member (34), and the lower end of the second moving plate (31) has a second limiting hole in the middle that cooperates with the output end of the second driving member (34). When the second driving member (34) is in working state, the output end of the second driving member (34) cooperates with the second limiting hole.

5. A combined disassembly tool for plugging valves according to claim 2, characterized in that, Each of the first limiting sleeves (22) is provided with a corresponding first screw (24). Before the valve cover (12) is removed and the first driving member (25) is in the initial state, the lower end of the first moving plate (23) abuts against each of the first limiting sleeves (22).

6. A combined disassembly tool for plugging valves according to claim 3, characterized in that, Each of the third limiting sleeves (32) is provided with a corresponding third screw (33). When the four-ring (14) is removed, the lower end of the second moving plate (31) abuts against each of the third limiting sleeves (32).

7. A combined disassembly tool for plugging valves according to claim 3, characterized in that, The first limiting sleeve (22) and the third limiting sleeve (32) are either shared components or independent components.

8. A combined disassembly tool for plugging valves according to claim 3, characterized in that, The second screw (27) and the third screw (33) are shared components, and there are two second screws (27).

9. A combined disassembly tool for plugging valves according to claim 3, characterized in that, The support plate (21) and the second movable plate (31) are either shared components or independent components.

10. A combined disassembly tool for plugging valves according to claim 2, characterized in that, The first drive unit (25) and the second drive unit (34) are both either jacks or telescopic cylinders.

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