A tool kit for repairing quick-opening angle valves

Abstract

This utility model discloses a tool kit for repairing quick-opening angle valves, relating to the field of repair tool technology. It includes a stroke adjustment tool and a bellows installation tool. The stroke adjustment tool includes an air filter regulator and a connecting pipe. One end of the connecting pipe is connected to the gas outlet of the air filter regulator, and the gas inlet of the air filter regulator is used to introduce compressed air. The other end of the connecting pipe is used to connect to the cylinder air supply port of the quick-opening angle valve. The air filter regulator is used to adjust the stroke of the quick-opening angle valve. The bellows installation tool is used to limit the movement of the bellows and to tighten the valve cover onto the valve core of the bellows. This utility model can improve repair efficiency and extend the service life of quick-opening angle valves.

Description

Technical Field

[0001] This utility model relates to the field of maintenance tool technology, and in particular to a tool kit for repairing quick-opening angle valves. Background Technology

[0002] Backflushing systems are a technology that uses reverse airflow to remove particles from the surface of filter media or achieve component separation. They are widely used in industrial dust removal, gas chromatography analysis, and gas turbine intake air purification. Taking the S1501 backflushing system as an example, it is equipped with 24 quick-opening angle valves (also known as backflushing valves), with one quick-opening angle valve installed on the top of each set of filter rods. The backflushing system utilizes the quick-opening characteristic of these valves to blow ultra-high pressure, high-temperature nitrogen into the filtration system to clean the filter rods, thereby improving their filtration performance. If the backflushing system malfunctions, it can lead to a series of problems affecting the normal operation of the gasification unit, such as filter rod damage, substandard crude syngas filtration, and unstable nitrogen pipeline pressure. In severe cases, it can even cause an accidental shutdown of the gasification unit. In short, the proper functioning of the quick-opening angle valves plays a crucial role in the long-term stable operation of the fly ash filter.

[0003] Due to the rapid opening and closing, high pressure differential, and structural characteristics of quick-opening angle valves, the high-speed operation causes significant vibrations in the valve body, impacting the valve seat seal and internal components. This can easily lead to a series of problems affecting the normal operation of quick-opening angle valves, such as valve seal damage, bellows rupture, valve stem breakage, loose valve core (valve cover) bolts, cylinder rod breakage, and loose cylinder piston bolts, thus affecting the valve's service life. Therefore, quick-opening angle valves require frequent maintenance. However, the current technology lacks specialized maintenance tools for quick-opening angle valves, directly impacting maintenance efficiency and even affecting their service life. Utility Model Content

[0004] The purpose of this utility model is to provide a tool kit for repairing quick-opening angle valves, so as to solve the problems existing in the prior art, improve repair efficiency, and extend the service life of quick-opening angle valves.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a tool kit for repairing a quick-opening angle valve, including a stroke adjustment tool and a bellows installation tool. The stroke adjustment tool includes an air filter regulator and a connecting pipe. One end of the connecting pipe is connected to the gas outlet of the air filter regulator, and the gas inlet of the air filter regulator is used to introduce compressed air. The other end of the connecting pipe is used to connect to the cylinder air supply port of the quick-opening angle valve. The air filter regulator is used to adjust the stroke of the quick-opening angle valve. The bellows installation tool is used to limit the position of the bellows and tighten the valve cover to the valve core of the bellows.

[0007] Preferably, one end of the connecting pipe is threaded to the gas outlet of the air filter pressure reducer.

[0008] Preferably, the air filter pressure regulator is provided with an adjustment handle, which is connected to an adjustment bolt inside the air filter pressure regulator. Rotating the adjustment handle can drive the adjustment bolt to rotate and change the cross-sectional area of ​​the valve core inside the air filter pressure regulator.

[0009] Preferably, the bellows installation tool includes a limiting plate, a base, and a locking nut. The base is used to connect to the lower end of the bellows. The limiting plate has a limiting opening on one side, which is used for the upper end of the bellows to pass through and to restrict the rotation of the upper end of the bellows. The valve cover is used to be installed on the outer periphery of the upper end of the bellows from above the limiting plate. The locking nut is used to be threaded to the outer periphery of the bellows and is located at the upper end of the valve cover.

[0010] Preferably, the limiting opening is a rectangular opening, and the two opposite inner sidewalls of the rectangular opening are respectively used to contact the two parallel outer walls of the bellows.

[0011] Preferably, it also includes auxiliary tools for disassembling and installing quick-opening angle valves.

[0012] Preferably, the auxiliary tool includes several auxiliary rings. Each auxiliary ring has an annular protrusion on its outer periphery and an annular groove in the center of the protrusion. The auxiliary ring is used to fit around the outer periphery of the valve stem of the quick-opening angle valve and can abut against one end of the bellows. The auxiliary ring also connects the bellows to the bushing of the quick-opening angle valve, ensuring that the bellows and bushing are coaxial. The auxiliary ring is formed by splicing two half-rings, and each half-ring can be radially inserted into the outer periphery of the valve stem. The inner diameter of the auxiliary ring is 2 mm.

[0013] Preferably, the auxiliary tool further includes a long screw tooling, which is used to install or remove the cylinder head tie rod bolts of the quick-opening angle valve.

[0014] Preferably, the auxiliary tool further includes multiple measuring blocks, which are cuboid in shape.

[0015] Preferably, the auxiliary tool further includes a lever seal torquer and a thread-locking agent. The lever seal torquer is used to replace the combined sealing ring and guide ring in the quick-opening angle valve, and the thread-locking agent is used to secure the threaded connections in the quick-opening angle valve.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] This utility model provides a tool kit for repairing quick-opening angle valves, including a stroke adjustment tool and a bellows installation tool. The stroke adjustment tool includes an air filter regulator and a connecting pipe. One end of the connecting pipe is connected to the gas outlet of the air filter regulator, and the gas inlet of the air filter regulator is used to introduce compressed air. The other end of the connecting pipe is used to connect to the cylinder air supply port of the quick-opening angle valve. The air filter regulator is used to adjust the stroke of the quick-opening angle valve. When compressed air is input to the cylinder air supply port through the air filter regulator, it enters the filter chamber of the quick-opening angle valve for water, oil, and dust removal. Due to the internal structure of the air filter regulator, a balanced state can be achieved within it. The air volume and pressure entering the cylinder of the quick-opening angle valve are controlled by the cross-sectional area of ​​the valve core within the air filter regulator. Because a closing spring is installed inside the cylinder of the quick-opening angle valve, it can remain closed for a long time. Compressed air enters from the cylinder supply port and overcomes the closing spring, achieving balance. When the air source pressure is increased or decreased, the force of the closing spring remains unchanged. Changing the magnitude of the force overcoming the spring can push the cylinder piston up and down. When the required stroke is reached, the adjustment stops, thus achieving stable stroke adjustment of the quick-opening angle valve and ensuring that the quick-opening angle valve can be stably positioned at the required stroke. The adjustment process is simple and convenient, improving maintenance efficiency. The bellows installation tool is used to limit the bellows and tighten the valve cover to the valve core of the bellows, so as to facilitate the connection between the valve cover and the valve core and avoid the bellows being directly subjected to external stress and tightening force during installation, achieving smooth installation and extending the overall service life. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0019] Figure 1 This is a schematic diagram of the structure of the stroke adjustment tool of this utility model;

[0020] Figure 2 This is a schematic diagram of the limiting plate in this utility model;

[0021] Figure 3 This is a schematic diagram of the corrugated pipe installation tool in use according to this utility model;

[0022] Figure 4 This is a schematic diagram of the auxiliary ring structure in this utility model;

[0023] Figure 5 This is a schematic diagram of the semi-ring structure in this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the medium-length screw tooling of this utility model;

[0025] Figure 7 This is a schematic diagram of the measuring block in this utility model;

[0026] Figure 8 This is a schematic diagram of the thread-locking agent in this utility model;

[0027] In the diagram: 1-Air filter regulator, 2-Adjusting handle, 3-Gas inlet, 4-Gas outlet, 5-Connecting pipe, 6-Limiting plate, 7-Limiting opening, 8-Bellwall, 9-Valve cover, 10-Locking nut, 11-Base, 12-Auxiliary ring, 13-Half ring, 14-Annular protrusion, 15-Annular groove, 16-Long screw tooling, 17-Measuring block, 18-Threading agent. Detailed Implementation

[0028] 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.

[0029] The purpose of this utility model is to provide a tool kit for repairing quick-opening angle valves, so as to solve the problems existing in the prior art, improve repair efficiency, and extend the service life of quick-opening angle valves.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-8As shown, this embodiment provides a tool kit for repairing a quick-opening angle valve, including a stroke adjustment tool and a bellows 8 installation tool. The stroke adjustment tool includes an air filter regulator 1 and a connecting pipe 5. One end of the connecting pipe 5 is connected to the gas outlet 4 of the air filter regulator 1, and the gas inlet 3 of the air filter regulator 1 is used to introduce compressed air. The other end of the connecting pipe 5 is used to connect to the cylinder air supply port of the quick-opening angle valve. The air filter regulator 1 is used to adjust the stroke of the quick-opening angle valve. When compressed air is input to the cylinder air supply port through the air filter regulator 1, it enters the filter chamber of the quick-opening angle valve for water, oil, and dust removal. Due to the internal structure of the air filter regulator 1, a balanced state can be achieved within the air filter regulator 1. The air volume and pressure entering the cylinder of the quick-opening angle valve are determined by the cross-sectional area of ​​the valve core inside the air filter regulator 1. The quick-opening angle valve is controlled by a closing spring installed inside its cylinder, which keeps it closed for extended periods. Compressed air entering from the cylinder's air supply port overcomes the closing spring's action and achieves balance. When the air source pressure is increased or decreased, the closing spring's force remains constant. Changing the magnitude of the force overcoming the spring pushes the cylinder piston up and down. When the desired stroke is reached, the adjustment stops, thus achieving stable stroke adjustment of the quick-opening angle valve and ensuring it remains stable at the required stroke position. The adjustment process is simple and convenient, improving maintenance efficiency. The bellows 8 installation tool is used to limit the bellows 8 and tighten the valve cover 9 onto the valve core of the bellows 8, facilitating the connection between the valve cover 9 and the valve core. This prevents the bellows 8 from being directly subjected to external stress and tightening force during installation, ensuring smooth installation and extending the overall service life.

[0032] Specifically, one end of the connecting pipe 5 is threaded to the gas outlet 4 of the air filter pressure reducer 1, and is used to introduce compressed air through the air filter pressure reducer 1 and the connecting pipe 5 to the quick-opening angle valve. The specific structure and working principle of the air filter pressure reducer 1 are consistent with the existing technology. It can filter impurities, stabilize air pressure and lubricate pneumatic components. In addition, it can adjust the stroke of the cylinder at any position, and the adjustment stroke is not limited. The whole process is safe and reliable.

[0033] The air filter pressure regulator 1 is equipped with an adjustment handle 2, which is connected to the adjustment bolt inside the air filter pressure regulator 1. Rotating the adjustment handle 2 can drive the adjustment bolt to rotate and change the cross-sectional area of ​​the valve core inside the air filter pressure regulator 1, thereby achieving pressure adjustment. For example, when compressed air at 0.60 MPa is input through the gas inlet 3 of the air filter pressure reducer 1, the compressed air undergoes water, oil, and dust removal treatment in the filter chamber of the air filter pressure reducer 1. Since there is an adjusting bolt connected to the adjusting handle 2, and an adjusting spring is also provided at the adjusting bolt, the reaction force generated by the adjusting spring can achieve a balanced state. At this time, by rotating the adjusting handle 2, the cross-sectional area of ​​the valve core inside the air filter pressure reducer 1 can be changed. Specifically, rotating the adjusting handle 2 clockwise increases the air source pressure, and rotating the adjusting handle 2 counterclockwise decreases the air source pressure. Thus, the adjusted compressed air enters the cylinder supply port of the quick-opening angle valve through the air filter pressure reducer 1 and the connecting pipe 5, and overcomes the closing spring action of the quick-opening angle valve to achieve balance. When the air source pressure is increased or decreased, the closing spring force remains unchanged. Changing the magnitude of the spring force that overcomes the closing spring can push the cylinder piston up and down. When the required stroke is reached, the adjustment stops, thereby achieving stable adjustment of the valve stroke.

[0034] The bellows 8 installation tool includes a limiting plate 6, a base 11, and a locking nut 10. The base 11 is used to connect the lower end of the bellows 8. The limiting plate 6 has a limiting opening 7 on one side, through which the upper end of the bellows 8 passes and to restrict the rotation of the upper end of the bellows 8. When the bellows 8 is placed into the limiting opening 7, it enters from the opening side of the limiting opening 7. The valve cover 9 is installed on the outer periphery of the upper end of the bellows 8 from above the limiting plate 6. The locking nut 10 is threaded to the outer periphery of the bellows 8 and is located on the upper end of the valve cover 9. The limiting opening 7 is a rectangular opening, and the two opposite inner walls of the rectangular opening are respectively used to contact the two parallel outer walls of the bellows 8, thereby achieving circumferential limiting of the upper end of the bellows 8.

[0035] The specific installation steps for the bellows 8 are as follows: First, place the upper end of the bellows 8 into the limiting opening 7, and support the lower end of the bellows 8 through the base 11. The two parallel outer walls of the bellows 8 should contact the two parallel inner walls of the limiting opening 7. At this point, the limiting plate 6 acts as a wrench with the position fixed. Next, place the valve cover 9 with its arc surface facing down and its flat surface facing up onto the valve core of the bellows 8. Then, install an M27 locking nut 10 above the flat surface of the valve cover 9, and use a wrench of the appropriate size to tighten the locking nut 10 onto the outer circumference of the valve core of the bellows 8. Finally, spot weld two points at symmetrical positions between the inner side of the locking nut 10 and the outer side of the valve core of the bellows 8 to prevent the locking nut 10 from failing. During the tightening of the locking nut 10, the entire bellows 8 will not be subjected to the force of the tightening nut 10, thus preventing the bellows 8 from being subjected to external stress or tightening force, achieving stable installation, preventing the bellows 8 from being deformed or damaged, and affecting its service life.

[0036] The quick-opening angle valve repair tool kit in this embodiment also includes auxiliary tools for disassembling and installing the quick-opening angle valve.

[0037] In this embodiment, the valve stem size of the quick-opening angle valve is φ30mm. This ensures the mechanical strength of the valve stem and increases the gap between the valve stem and the bellows 8. The theoretical gap can reach 2mm, which avoids the valve stem and the inner wall of the bellows 8 rubbing against each other when the valve is activated, thus affecting the service life of the bellows 8 and preventing external leakage of the quick-opening angle valve.

[0038] The auxiliary tool includes several auxiliary rings 12, preferably PTFE rings. Each auxiliary ring 12 has an annular protrusion 14 around its outer circumference, and an annular groove 15 in the center of the protrusion 14 to prevent the auxiliary ring 12 from falling directly into the inner hole of the bellows 8 during installation. The auxiliary ring 12 is used to fit around the outer circumference of the valve stem of the quick-opening angle valve, and it can abut against one end of the bellows 8, thereby adjusting the coaxiality of the valve stem to ensure the concentricity of the valve stem and the flange hole of the bellows 8, with an eccentricity not exceeding 0.2 mm. The auxiliary ring 12 also connects the bellows 8 to the bushing of the quick-opening angle valve, ensuring the bellows 8 and the bushing are coaxial, thus preventing... Wear occurs during the installation of the bellows 8 and the bushing wall; the auxiliary ring 12 is formed by splicing two half-rings 13. Preferably, the two half-rings 13 are cut from one auxiliary ring 12, and the two half-rings 13 can be respectively inserted into the outer circumference of the valve stem radially. After installation, since the upper thread of the bellows 8 has been fixed, the auxiliary ring 12 can only be removed from the left and right sides. Therefore, the auxiliary ring 12 is designed as a split type to ensure that it can be reused. The inner hole length of the auxiliary ring 12 is 2mm to ensure that the theoretical valve stem clearance of the quick-opening angle valve is 2mm. The inner diameter of the auxiliary ring 12 is preferably 30mm, and the outer diameter of the annular protrusion 14 is preferably 34mm.

[0039] The auxiliary tools also include a long screw tool 16, which is used to remove and install the cylinder head tie rod bolts of the quick-opening angle valve. The specific application method is as follows: remove the two symmetrical locking bolts of the cylinder, replace them with the long screw tool 16, tighten the nuts to secure the cylinder head, gradually unscrew the remaining cylinder locking screws, and simultaneously slowly loosen the nuts on the fully threaded screws to release the spring pressure inside the cylinder, allowing the cylinder components to be removed. When installing the cylinder, use the long screw tool 16 to gradually tighten the nuts until the piston shaft of the shock absorber just contacts the piston shaft of the cylinder. The long screw tool 16 serves as a guide and positioner, provides temporary support, and distributes the load.

[0040] The auxiliary tools also include multiple measuring blocks 17, which are cuboid in shape. The widths of the measuring blocks 17 are 20mm, 11mm, and 9mm. By setting the measuring blocks 17, the installation dimensions can be precisely controlled, gaps adjusted, or positions calibrated, ensuring the installation accuracy and coaxiality of the cylinder and connecting components. Specifically, the 20mm measuring block 17 is used to measure and adjust the valve stroke to 20mm due to limited installation space; the 11mm measuring block 17 is used because, based on practical experience, the gap between the cylinder piston disc and the lower cylinder head in imported cylinders is 11mm; and the 9mm measuring block 17 is used because, based on practical installation experience, the gap between the cylinder piston disc and the lower cylinder head in domestically produced cylinders is 9mm. In this embodiment, the above dimensions can be adjusted adaptively according to actual needs.

[0041] The auxiliary tools also include a pull rod seal engagement device and thread-locking agent 18. The pull rod seal engagement device is consistent with the prior art and is used to replace the combined sealing ring and guide ring located in the cylinder lower cover of the quick-opening angle valve. The thread-locking agent 18 is used to bond the threaded connections in the quick-opening angle valve, such as to tighten the double-disc self-locking washer installed on the piston rod, the connecting thread between the shock absorber piston rod and the cylinder piston rod, or to coat the outer circumference of the piston rod with thread-locking agent 18 to prevent the locking nut 10 of the quick-opening angle valve from loosening under vibration conditions.

[0042] Auxiliary tools also include PTFE protective rings for valve cores, which are used when disassembling and installing valve cores. In a special tooling position, a wrench is used to remove or install the valve core nut, which can protect the valve core sealing surface from damage.

[0043] In practical applications, the corresponding tools described above can be selected according to the actual maintenance process, which can effectively improve the maintenance efficiency of quick-opening angle valves, solve the problems of maintenance safety and adaptability, improve maintenance quality, and extend the service life of quick-opening angle valves.

[0044] This embodiment, through the above design, can solve problems such as valve stem eccentricity, concentricity, support rod deformation, additional stress on bellows 8 during installation, and bolt loosening caused by large valve vibration during operation in quick-opening angle valves. Thus, it solves operational problems caused by quick-opening angle valve maintenance, consolidates the stable operating time of the device, ensures that the overall service life of quick-opening angle valves reaches more than 150,000 cycles, and the long-term goal is to increase the overall service life of quick-opening angle valves to more than 200,000 cycles, while improving maintenance efficiency by more than 40%, and ensuring the safety of maintenance work.

[0045] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A quick-opening valve repair tool kit characterized by: The device includes a stroke adjustment tool and a bellows installation tool. The stroke adjustment tool includes an air filter regulator and a connecting pipe. One end of the connecting pipe is connected to the gas outlet of the air filter regulator, and the gas inlet of the air filter regulator is used to introduce compressed air. The other end of the connecting pipe is used to connect to the cylinder air supply port of the quick-opening angle valve. The air filter regulator is used to adjust the stroke of the quick-opening angle valve. The bellows installation tool is used to limit the position of the bellows and tighten the valve cover to the valve core of the bellows. The bellows installation tool includes a limiting plate, a base, and a locking nut. The base is used to connect to the lower end of the bellows. The limiting plate has a limiting opening on one side, which is used for the upper end of the bellows to pass through and to restrict the rotation of the upper end of the bellows. The valve cover is used to be installed on the outer periphery of the upper end of the bellows from above the limiting plate. The locking nut is used to be threaded to the outer periphery of the bellows and is located at the upper end of the valve cover.

2. The fast-opening valve repair kit of claim 1, wherein: One end of the connecting pipe is threaded to the gas outlet of the air filter pressure reducer.

3. The fast-opening valve repair kit of claim 1, wherein: The air filter pressure regulator is equipped with an adjustment handle, which is connected to an adjustment bolt inside the air filter pressure regulator. Rotating the adjustment handle can drive the adjustment bolt to rotate and change the cross-sectional area of ​​the valve core inside the air filter pressure regulator.

4. The fast-opening valve repair kit of claim 1, wherein: The limiting opening is a rectangular opening, and the two opposite inner sidewalls of the rectangular opening are respectively used to contact the two parallel outer walls of the bellows.

5. The fast-opening valve service tool kit of claim 1, wherein: It also includes auxiliary tools for disassembling and installing quick-opening angle valves.

6. The tool kit for repairing quick-opening angle valves according to claim 5, characterized in that: The auxiliary tool includes several auxiliary rings. Each auxiliary ring has an annular protrusion on its outer circumference and an annular groove in the center of the annular protrusion. The auxiliary ring is used to fit around the outer circumference of the valve stem of the quick-opening angle valve and can abut against one end of the bellows. The auxiliary ring is also used to connect the bellows to the bushing of the quick-opening angle valve and to make the bellows and bushing coaxial. The auxiliary ring is formed by splicing two half-rings, and the two half-rings can be respectively fitted into the outer circumference of the valve stem radially. The inner hole length of the auxiliary ring is 2mm.

7. The fast-opening valve repair kit of claim 5, wherein: The auxiliary tool also includes a long screw tool, which is used to install and remove the cylinder head tie rod bolts of the quick-opening angle valve.

8. The fast-opening valve repair kit of claim 5, wherein: The auxiliary tool also includes multiple measuring blocks, which are cuboid in shape.

9. The fast-opening valve repair kit of claim 5, wherein: The auxiliary tools also include a lever seal torquer and a thread-locking agent. The lever seal torquer is used to replace the combined sealing ring and guide ring in the quick-opening angle valve, and the thread-locking agent is used to bond the threaded connections in the quick-opening angle valve.

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