A precise alignment and rapid sealing tool for high-pressure valve maintenance in a thermal power plant

Abstract

The utility model discloses a kind of quick sealing tooling for precision alignment of thermal power plant high-pressure valve maintenance, including base, the inside of base is rotatably connected with first threaded rod by bearing, the surface of first threaded rod is threadedly connected with first threaded sleeve, the top of first threaded sleeve is connected with mounting block, the lateral wall of mounting block is connected with pneumatic plugging head, the top surface of base is connected with arc disc, the lateral wall of arc disc close to pneumatic plugging head is connected with sealing gasket, the inside of base is rotatably connected with second threaded rod by bearing, the surface of second threaded rod is threadedly connected with second threaded sleeve.The utility model greatly reduces the time that operator needs to take tool sequentially by the cooperation between base, first threaded rod, first threaded sleeve, mounting block, pneumatic plugging head, arc disc, sealing gasket, second threaded rod, second threaded sleeve and clamping block, so that the efficiency of maintenance is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of rapid sealing tooling technology, specifically relating to a rapid sealing tooling for precise alignment used in the maintenance of high-pressure valves in thermal power plants. Background Technology

[0002] Quick-sealing fixtures are a type of specialized tooling fixture that can quickly achieve sealing operations and ensure sealing performance under specific working conditions. They are widely used in various fields such as thermal power plants, chemical industry, automobiles, and radiator manufacturing, and are suitable for different scenarios such as leak detection and airtightness testing.

[0003] During the maintenance of high-pressure valves in thermal power plants, the valves must first be secured. Then, one end of the valve is sealed using a quick-sealing tool, and the other end is sealed using a sealing disc. Subsequently, the sealing disc is connected to a gas pipe to fill the valve with gas. The fluctuation of the pressure gauge on the gas delivery pipe is used to determine whether there is a risk of leakage in the valve. However, in this case, the quick-sealing tool is separate from the valve fixing fixture. This requires the tools to be picked up and used sequentially during the maintenance process, which greatly reduces the efficiency of the maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a precise alignment and rapid sealing fixture for the maintenance of high-pressure valves in thermal power plants. This addresses the problem of existing technologies where, during maintenance, the high-pressure valve needs to be fixed first, then one end is sealed with the rapid sealing fixture, and the other end is sealed with a sealing disc. The sealing disc is then connected to a gas pipe to fill the valve with gas, and the pressure gauge reading on the gas delivery pipe indicates a potential leak. However, in this method, the rapid sealing fixture is separate from the valve fixing clamp, requiring tools to be retrieved sequentially during maintenance, significantly reducing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid sealing fixture for precise alignment during the maintenance of high-pressure valves in thermal power plants, comprising a base, a first threaded rod rotatably connected to the interior of the base via a bearing, a first threaded sleeve threadedly connected to the surface of the first threaded rod, an installation block connected to the top of the first threaded sleeve, a pneumatic sealing head connected to the side wall of the installation block, an arc-shaped disk connected to the top surface of the base, a sealing gasket connected to the side wall of the arc-shaped disk near the pneumatic sealing head, a second threaded rod rotatably connected to the interior of the base via a bearing, a second threaded sleeve threadedly connected to the surface of the second threaded rod, and a clamping block connected to the top of the second threaded sleeve.

[0006] As a preferred embodiment of the present invention, a rapid sealing tool for precise alignment in the maintenance of high-pressure valves in thermal power plants, the pneumatic sealing head can form a threaded transmission with the base through the mounting block, the first threaded sleeve and the first threaded rod.

[0007] As a preferred embodiment of the present invention, a quick sealing tool for precise alignment in the maintenance of high-pressure valves in thermal power plants, the top of the base is provided with a movable opening that is adapted to the first threaded sleeve and the second threaded sleeve.

[0008] As a preferred embodiment of the present invention, a rapid sealing fixture for precise alignment used in the maintenance of high-pressure valves in thermal power plants, the inner wall of the cavity of the base is provided with a sliding groove, a slider is connected inside the sliding groove, a connecting rod is connected to the side wall of the slider, a push plate is connected to the bottom end of the connecting rod, and a lever is connected to the side of the connecting rod away from the slider.

[0009] As a preferred embodiment of the present invention, a quick sealing fixture for precise alignment used in the maintenance of high-pressure valves in thermal power plants, the base has a fixing block connected to its side wall, and a locking bolt is threaded through the surface of the fixing block.

[0010] As a preferred embodiment of the present invention, a rapid sealing tool for precise alignment in the maintenance of high-pressure valves in thermal power plants, the push plate can be slidably connected to the base via a connecting rod, a lever, a sliding groove, and a slider.

[0011] As a preferred embodiment of the present invention, a quick sealing tool for precise alignment in the maintenance of high-pressure valves in thermal power plants, the lever block can be detachably and fixedly connected to the base via locking bolts and a fixing block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] Through the cooperation of the base, first threaded rod, first threaded sleeve, mounting block, pneumatic sealing head, arc-shaped disc, sealing gasket, second threaded rod, second threaded sleeve, and clamping block, the operator places the high-pressure valve of the thermal power plant between the clamping block and the arc-shaped disc. Then, the second threaded rod is rotated, and the second threaded sleeve moves along the threads on the surface of the second threaded rod. At the same time, the second threaded sleeve drives the clamping block closer to the arc-shaped disc, so that one end of the high-pressure valve of the thermal power plant is in contact with the sealing gasket. As the second threaded rod continues to rotate, the high-pressure valve of the thermal power plant is fixed between the clamping block and the arc-shaped disc. At the same time, the sealing gasket seals the gap between the clamping block and the arc-shaped disc to ensure the sealing of the connection. Then, the first threaded rod is rotated to move, at which time the first threaded sleeve moves along the threads on the surface of the first threaded rod. The threaded part moves, and then the first threaded sleeve moves the mounting block. The mounting block moves the pneumatic sealing head closer to the other end of the high-pressure valve in the power plant, so that the pneumatic sealing head is inserted into the inside of the high-pressure valve. Then, the pneumatic sealing head is connected to the air source equipment through the pipeline, and the air source equipment sends gas to inflate the sealing air bladder at the front end of the pneumatic sealing head, thereby sealing the other end of the high-pressure valve. Then, the connector on the arc-shaped plate is connected to the air pipe, allowing the air source equipment to send gas into the inside of the high-pressure valve through the air pipe. The fluctuation of the pressure gauge on the gas delivery pipe is used to determine whether there is a risk of leakage in the high-pressure valve. This greatly reduces the time that operators need to take out tools one by one, thus greatly improving the efficiency of maintenance.

[0014] Through the cooperation of the slide, slider, connecting rod, push plate, lever, fixing block, and locking bolt, the operator rotates the locking bolt to move it out from inside the lever and separate it from the fixing block. Then, the lever pushes the connecting rod to move, which in turn drives the slider to slide along the slide. Next, the connecting rod drives the push plate to move, and the push plate pushes out dust and debris that have fallen into the base through the opening on the side wall of the base, thus ensuring the cleanliness of the base and preventing dust and debris from adhering to the surfaces of the first and second threaded rods, which would affect the movement of the first and second threaded sleeves during rotation, thereby greatly improving the stability of use. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional top view of the structure of this utility model;

[0018] Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0019] Figure 4 This utility model Figure 3 A magnified structural diagram at point A in the diagram.

[0020] In the diagram: 1. Base; 2. First threaded rod; 3. First threaded sleeve; 4. Mounting block; 5. Pneumatic sealing head; 6. Arc-shaped disc; 7. Sealing gasket; 8. Second threaded rod; 9. Second threaded sleeve; 10. Clamping block; 11. Slide groove; 12. Slider; 13. Connecting rod; 14. Push plate; 15. Pulling block; 16. Fixing block; 17. Locking bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides the following technical solution: a quick sealing fixture for precise alignment during the maintenance of high-pressure valves in thermal power plants, comprising a base 1, a first threaded rod 2 rotatably connected to the inside of the base 1 via a bearing, a first threaded sleeve 3 threadedly connected to the surface of the first threaded rod 2, an installation block 4 connected to the top of the first threaded sleeve 3, a pneumatic sealing head 5 connected to the side wall of the installation block 4, an arc-shaped disk 6 connected to the top surface of the base 1, a sealing gasket 7 connected to the side wall of the arc-shaped disk 6 near the pneumatic sealing head 5, a second threaded rod 8 rotatably connected to the inside of the base 1 via a bearing, a second threaded sleeve 9 threadedly connected to the surface of the second threaded rod 8, and a clamping block 10 connected to the top of the second threaded sleeve 9.

[0023] Preferably, the pneumatic sealing head 5 can form a threaded drive with the base 1 through the mounting block 4, the first threaded sleeve 3 and the first threaded rod 2.

[0024] In practical use, the pneumatic plug head 5 is model ZB-E internal expansion pneumatic plug head. It needs to be connected to an air source device to inflate the air bladder of the pneumatic plug head 5, thereby sealing the inside of the high-pressure valve in the thermal power plant. Subsequently, when the first threaded rod 2 rotates, the first threaded sleeve 3 will move along the thread on the surface of the first threaded rod 2. Then, the mounting block 4 will also move along with the first threaded sleeve 3. The pneumatic plug head 5 is connected to the mounting block 4 and will also move along with the mounting block 4, thus realizing the convenient movement of the pneumatic plug head 5.

[0025] It is worth noting that the pneumatic sealing head 5 and the pipe joint on the arc-shaped plate 6 are on the same horizontal line. This allows the pneumatic sealing head 5 to be accurately aligned with the inside of the high-pressure valve when the high-pressure valve is fixed by the arc-shaped plate 6 and the clamping block 10, and then move into the inside of the high-pressure valve.

[0026] It should be noted that the surface of the rotating handle of the first threaded rod 2 is threaded with a mating bolt, which can generate a fixing force against the base 1, thereby fixing the stability of the first threaded rod 2. When using the first threaded rod 2, rotating the mating bolt releases the mating with the base 1, thus ensuring the stability of the first threaded rod 2. Rotating the mating bolt generates a mating force against the base 1.

[0027] Preferably, the top of the base 1 has a movable opening that is adapted to the first threaded sleeve 3 and the second threaded sleeve 9.

[0028] In practical use, the first threaded sleeve 3 moves along the thread on the surface of the first threaded rod 2. The first threaded sleeve 3 is restricted by the opening on the base 1, which prevents the first threaded sleeve 3 from rotating with the first threaded rod 2 and affecting the stability of the mounting block 4. At the same time, it also ensures the stable movement of the pneumatic sealing head 5. Meanwhile, the second threaded sleeve 9 moves along the thread on the surface of the second threaded rod 8. The second threaded sleeve 9 is restricted by the opening on the base 1, which prevents the second threaded sleeve 9 from rotating with the second threaded rod 8 and affecting the stable movement of the clamping block 10. This ensures the stable movement of the clamping block 10 and the pneumatic sealing head 5.

[0029] Preferably, the inner wall of the cavity of the base 1 is provided with a groove 11, the inside of the groove 11 is connected to a slider 12, the side wall of the slider 12 is connected to a connecting rod 13, the bottom end of the connecting rod 13 is connected to a push plate 14, and the side of the connecting rod 13 away from the slider 12 is connected to a lever 15.

[0030] In practical use, the cooperation between the slide groove 11 and the slider 12 ensures the stability of the movement of the connecting rod 13. Then, the push plate 14 fits against the inner wall of the cavity of the base 1, which makes it easy for the dust and debris that fall into the base 1 to be pushed out from the opening on the side wall of the base 1 when the push plate 14 moves. This greatly improves the convenience of dust and debris handling.

[0031] Preferably, a fixing block 16 is connected to the side wall of the base 1, and a locking bolt 17 is threaded through the surface of the fixing block 16.

[0032] In actual use, the operator rotates the locking bolt 17 to move it. The locking bolt 17 can be connected and separated from the fixed block 16. Then, after the lever 15 is in contact with the fixed block 16, the screwing in of the locking bolt 17 can connect with the lever 15, thereby ensuring the stability of the connection of the lever 15.

[0033] Preferably, the push plate 14 can be slidably connected to the base 1 via the connecting rod 13, the lever 15, the slide groove 11 and the slider 12.

[0034] In practical use, the toggle block 15 can move the connecting rod 13, and then the connecting rod 13 will drive the slider 12 to slide along the slide groove 11. At the same time, the connecting rod 13 will also drive the push plate 14 to move, thus realizing the convenient operation of the push plate 14.

[0035] Preferably, the lever 15 can be detachably and fixedly connected to the base 1 by means of the locking bolt 17 and the fixing block 16.

[0036] In practical use, the locking bolt 17 can be fixed by passing through the fixing block 16 and connecting to the lever block 15, thus ensuring that the lever block 15 will not move when not in use, thereby ensuring the stability of the lever block 15.

[0037] Working principle: First, the operator places the high-pressure valve of the thermal power plant between the clamping block 10 and the arc-shaped disk 6. Then, the operator rotates the second threaded rod 8, causing the second threaded sleeve 9 to move along the threads on the surface of the second threaded rod 8. Simultaneously, the second threaded sleeve 9 moves the clamping block 10 closer to the arc-shaped disk 6, bringing one end of the high-pressure valve into contact with the sealing gasket 7. As the second threaded rod 8 continues to rotate, the high-pressure valve is securely fixed between the clamping block 10 and the arc-shaped disk 6. At this point, the sealing gasket 7 seals the gap between the two, ensuring the sealing of the connection. Afterwards, the operator rotates the first threaded rod... Following the threaded rod 2, the first threaded sleeve 3 moves along the threads on the surface of the first threaded rod 2. At this time, the first threaded sleeve 3 drives the mounting block 4 to move, and the mounting block 4 in turn drives the pneumatic sealing head 5 to approach the other end of the high-pressure valve of the thermal power plant. Finally, the pneumatic sealing head 5 is inserted into the interior of the high-pressure valve of the thermal power plant. Since the pneumatic sealing head 5 and the air pipe joint on the arc-shaped plate 6 are on the same horizontal line, this facilitates the precise alignment of the pneumatic sealing head 5. Subsequently, the pneumatic sealing head 5 is connected to the air source equipment through a pipeline. The air source equipment supplies air to inflate the sealing air bladder at the front end of the pneumatic sealing head 5, thereby sealing the other end of the high-pressure valve of the thermal power plant. Next, connect the connector on the arc-shaped plate 6 to the gas pipe, allowing the gas source equipment to supply gas to the high-pressure valve of the thermal power plant through the gas pipe. Operators can judge whether there is a risk of leakage in the high-pressure valve by observing the fluctuations in the pressure gauge on the gas supply pipe, and then perform airtightness inspections on the high-pressure valve. This operation method greatly reduces the time spent by operators picking up tools sequentially, effectively improving maintenance efficiency. After completing the above operations, the operator rotates the locking bolt 17 to move it out of the inside of the lever 15 and separate it from the fixing block 16. Then, the operator pushes the lever 15, causing it to move the connecting... As rod 13 moves, connecting rod 13 drives slider 12 to slide along slide groove 11. At the same time, connecting rod 13 also drives push plate 14 to move. Then, the movement of push plate 14 can push out dust and debris that have fallen into the base 1 from the opening on the side wall of the base 1, ensuring that the inside of the base 1 is clean and preventing dust and debris from accumulating on the surface of the first threaded rod 2 and the second threaded rod 8, affecting the movement of the first threaded sleeve 3 and the second threaded sleeve 9 during rotation, thereby greatly improving the stability of the equipment. After use, make the lever 15 fit with the fixing block 16, and rotate the locking bolt 17 again to fix the lever 15.

[0038] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-sealing tool for precise alignment during the maintenance of high-pressure valves in thermal power plants, comprising a base (1), characterized in that: The base (1) is rotatably connected to a first threaded rod (2) via a bearing. The surface of the first threaded rod (2) is threadedly connected to a first threaded sleeve (3). The top of the first threaded sleeve (3) is connected to an mounting block (4). The side wall of the mounting block (4) is connected to a pneumatic sealing head (5), the top surface of the base (1) is connected to an arc-shaped disk (6), the side wall of the arc-shaped disk (6) near the pneumatic sealing head (5) is connected to a sealing gasket (7), the inside of the base (1) is rotatably connected to a second threaded rod (8) through a bearing, the surface of the second threaded rod (8) is threadedly connected to a second threaded sleeve (9), and the top end of the second threaded sleeve (9) is connected to a clamping block (10).

2. The rapid sealing fixture for precise alignment used in the maintenance of high-pressure valves in thermal power plants according to claim 1, characterized in that: The pneumatic sealing head (5) can form a threaded drive with the base (1) through the mounting block (4), the first threaded sleeve (3) and the first threaded rod (2).

3. The rapid sealing fixture for precise alignment used in the maintenance of high-pressure valves in thermal power plants according to claim 1, characterized in that: The top of the base (1) has a movable opening that is adapted to the first threaded sleeve (3) and the second threaded sleeve (9).

4. The rapid sealing fixture for precise alignment used in the maintenance of high-pressure valves in thermal power plants according to claim 1, characterized in that: The cavity inner wall of the base (1) is provided with a sliding groove (11), and a slider (12) is connected inside the sliding groove (11). A connecting rod (13) is connected to the side wall of the slider (12), and a push plate (14) is connected to the bottom end of the connecting rod (13). A lever (15) is connected to the side of the connecting rod (13) away from the slider (12).

5. The rapid sealing fixture for precise alignment used in the maintenance of high-pressure valves in thermal power plants according to claim 1, characterized in that: The base (1) has a fixing block (16) connected to its side wall, and a locking bolt (17) is threaded through the surface of the fixing block (16).

6. The rapid sealing fixture for precise alignment used in the maintenance of high-pressure valves in thermal power plants according to claim 4, characterized in that: The push plate (14) can be slidably connected to the base (1) via the connecting rod (13), the lever (15), the slide groove (11) and the slider (12).

7. The rapid sealing fixture for precise alignment used in the maintenance of high-pressure valves in thermal power plants according to claim 4, characterized in that: The lever (15) can be detachably and fixedly connected to the base (1) by means of locking bolts (17) and fixing block (16).

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