Gate valve overhauling tool

Abstract

The utility model discloses a gate valve overhauling tool which comprises a supporting beam, a lifting nut, a transmission rod, a tool upper limiting device, a tool lower limiting device and a separating device, the supporting beam is provided with a transmission rod channel matched with the transmission rod, and the supporting beam is provided with a connecting bolt channel. The transmission rod channel and the connecting bolt channel of the supporting beam are detachably connected with the separating device, the top end of the transmission rod is detachably connected with the separating device, threads are arranged in the circumferential direction of the transmission rod, the top end of the transmission rod is in threaded connection with the two rising and falling nuts, and the two rising and falling nuts are in threaded connection with the supporting beam. The transmission rod is in threaded connection with the tool upper limiting device, and the bottom end of the transmission rod is connected with the tool lower limiting device. The problems that the wedge-shaped flashboard is wedged, the sealing test of the wedge-shaped flashboard is difficult to operate, the wedge-shaped flashboard is difficult to install and the like are effectively solved, the device is simple in structure and easy to operate, the maintenance safety and the maintenance efficiency are guaranteed, and the inspection cost is reduced.

Description

Technical Field

[0001] The utility model relates to a valve repair tool, in particular to a gate valve repair tool. Background Art

[0002] In the prior art, for gate valves with wedge-shaped gate structures, although the auxiliary sealing load can be increased, the metal-sealed wedge-shaped gate valve can ensure both high medium pressure sealing and low medium pressure sealing; however, the wedge-shaped gate cannot be provided with guide holes, and the thermal expansion of the valve stem will also overload the sealing surface. Moreover, the sealing surface of the wedge-shaped gate valve is more likely to be mixed with particles carried by the flowing medium. When the temperature changes, the thermal expansion and contraction affected by the change in temperature, or the shrinkage stress caused by the deformation of the valve body, will cause the gate to be wedged, making it impossible to complete the equipment maintenance. Utility Model Content

[0003] In order to solve the technical problem that the gate plate is wedged and the equipment maintenance cannot be completed, the utility model provides a gate valve maintenance tool, and its technical solution is as follows:

[0004] The utility model provides a gate valve maintenance tool, which comprises a support beam, a lifting nut, a transmission rod, a tool upper limit device, a tool lower limit device, and a separation device. The support beam is provided with a transmission rod channel to adapt to the transmission rod, and the support beam is provided with a connecting bolt channel. The transmission rod channel and the connecting bolt channel of the support beam are both disassembled and connected to the separation device. The top end of the transmission rod is disassembled and connected to the separation device. The transmission rod is circumferentially provided with threads. The top end of the transmission rod is threadedly connected to two lifting nuts. The transmission rod is threadedly connected to the tool upper limit device, and the bottom end of the transmission rod is connected to the tool lower limit device.

[0005] Optionally, the separation device is a jack.

[0006] Optionally, the tool upper limit device is in the shape of a square plate with a channel in the center, and the inner wall of the channel is provided with threads.

[0007] Optionally, the tool lower limit device includes a locking piece a, a locking piece b, a sliding rod, an elastic component, and a supporting frame, the bottom end of the locking piece a is rotatably connected to the bottom end of the locking piece b, and the locking piece a and the locking piece b are provided with a sliding rod limiting groove on one side relative to each other, the two ends of the sliding rod are spherical in shape, the diameter of the sliding rod is larger than the diameter of the sliding rod rod, the two ends of the sliding rod are located in the sliding rod limiting groove, the depth of the sliding rod limiting groove is larger than the spherical diameter of the two ends of the sliding rod, and the entrance size of the sliding rod limiting groove is adapted to the sliding rod rod, the bottom ends of the locking piece a and the locking piece b are connected to the top of the elastic component, the bottom end of the elastic component is connected to the bottom of the supporting frame, the top of the supporting frame is fixedly connected to the bottom end of the transmission rod, the top inner wall of the supporting frame is provided with a supporting rod, the supporting rod is fixedly connected to the middle of the sliding rod, the supporting rod is rotatably connected to the locking piece a and the bottom end of the locking piece b, and the side of the supporting frame is provided with an opening to adapt to the locking piece a and the locking piece b.

[0008] Optionally, the tool lower limit device is in the shape of a square plate with a channel in the center, the inner wall of the channel is provided with threads, and the tool lower limit device is threadedly connected to the bottom end of the transmission rod.

[0009] Optionally, the elastic component is a compression spring.

[0010] Compared with the prior art, the technical solution of the utility model has the beneficial effects of effectively solving the problems of the wedge gate being wedged, the difficulty in operating the wedge gate sealing test, and the difficulty in installing the wedge gate. The device has a simple structure and is easy to operate, ensuring the safety of maintenance, and reducing inspection costs through maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the overall structure of the use state 1 of the embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the overall structure of the use state 2 of the embodiment of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of a gate valve repair tool according to an embodiment of the utility model;

[0014] Figure 4 It is a cross-sectional schematic diagram of a gate valve repair tool according to an embodiment of the utility model;

[0015] Figure 5 It is a schematic diagram of the structure of the lower limit device of the tool in the embodiment of the utility model;

[0016] In the figure: 1. support beam; 2. lifting nut; 3. transmission rod; 4. tool upper limit device; 5. tool lower limit device; 6. separation device; 7. locking plate a; 8. locking plate b; 9. sliding rod; 10. elastic component; 11. support frame; 12. gate valve; 13. valve seat sealing surface; 14. wedge-shaped valve plate; 15. valve disc fixing plate; 16. connecting bolts; 17. nuts. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings.

[0018] Example

[0019] like Figure 1 and 2 A gate valve maintenance tool is shown, which includes a support beam 1, a lifting nut 2, a transmission rod 3, a tool upper limit device 4, a tool lower limit device 5, and a separation device 6. The support beam 1 is provided with a transmission rod channel to accommodate the transmission rod 3, and the support beam 1 is provided with a connecting bolt channel. The transmission rod channel and the connecting bolt channel of the support beam 1 can be disassembled and connected to the separation device 6. The top of the transmission rod 3 is detachably connected to the separation device 6. The transmission rod 3 is circumferentially provided with threads. The top of the transmission rod 3 is threadedly connected to two lifting nuts 2, the transmission rod 3 is threadedly connected to the tool upper limit device 4, and the bottom of the transmission rod 3 is connected to the tool lower limit device 5.

[0020] Among them, the support beam 1 is located on the top of the gate valve 12.

[0021] The position of the connecting bolt channel on the support beam 1 is adapted to the installation position of the connecting bolt 16 of the gate valve 12 , and the size of the connecting bolt channel is adapted to the connecting bolt 16 .

[0022] The tool upper limit device 4 and the tool lower limit device 5 are used to fix the wedge-shaped valve plate 14 .

[0023] The separating device 6 is used to press or remove the wedge-shaped valve plate 14 .

[0024] When the separation device 6 is disassembled at the transmission rod channel of the support beam 1 , the two lifting nuts 2 are used to fix the support beam 1 and the transmission rod 3 .

[0025] For example, using state 1 as Figure 1 As shown, remove the separation device at the connecting bolt channel of the support beam 1 of the gate valve maintenance tool, fix the wedge-shaped valve plate 14 with the tool upper limit device 4 and the tool lower limit device 5, connect the support beam 1 and the top of the gate valve 12 with the connecting bolts 16 and the nuts 17, press the wedge-shaped valve plate 14 under the action of the separation device 6, and check the sealing condition of the wedge-shaped valve plate 14 and the gate valve 12.

[0026] For example, using state 2 as Figure 2As shown, the separation device at the transmission rod channel of the support beam 1 of the gate valve maintenance tool is removed, the wedge valve plate 14 is fixed with the tool upper limit device 4 and the tool lower limit device 5, the support beam 1 and the transmission rod 3 are fixed with two lifting nuts 2, and the wedge valve plate 14 is taken out under the action of the separation device 6 to check the sealing condition of the wedge valve plate 14 and the gate valve 12.

[0027] In some embodiments, the separation device 6 is a jack.

[0028] In some embodiments, the tool upper limit device 4 is in the shape of a square plate, with a channel in the center and threads on the inner wall of the channel.

[0029] Among them, the upper limit device 4 on the tool has a variety of specifications to choose from, meeting the needs of maintenance of gate valves of different sizes.

[0030] In some embodiments, Figures 3 to 5 As shown, the tool lower limit device 5 includes a locking piece a7, a locking piece b8, a sliding rod 9, an elastic component 10, and a support frame 11. The bottom end of the locking piece a7 is rotatably connected to the bottom end of the locking piece b8. The locking piece a7 and the locking piece b8 are provided with a sliding rod limiting groove on the opposite side. The two ends of the sliding rod are spherical with a diameter larger than the diameter of the rod portion of the sliding rod 9. The two ends of the sliding rod 9 are located in the sliding rod limiting groove. The depth of the sliding rod limiting groove is larger than the spherical diameter at both ends of the sliding rod 9. The entrance size of the sliding rod limiting groove adapts to the rod portion of the sliding rod 9. The bottoms of the locking pieces a7 and the locking pieces b8 are connected to the top of the elastic component 10, and the bottom end of the elastic component 10 is connected to the bottom of the support frame 11. The top of the support frame 11 is fixedly connected to the bottom end of the transmission rod 3. A support rod is provided on the inner wall of the top of the support frame 11. The support rod is fixedly connected to the middle of the sliding rod 9. The support rod is rotatably connected to the bottom ends of the locking pieces a7 and the locking pieces b8. An opening is provided on the side of the support frame 11 to adapt to the locking pieces a7 and the locking pieces b8.

[0031] Exemplarily, when the wedge-shaped valve plate 14 is fixed by the tool upper limit device 4 and the tool lower limit device 5, the tool lower limit device 5 passes through the hole of the valve disc fixing plate 15, the locking plate a7 and the locking plate b8 are subjected to force, the angle between the locking plate a7 and the locking plate b8 becomes smaller, and the two ends of the slide rod 9 enter a deeper position of the slide rod limiting groove, and the elastic component 10 is compressed. When the locking plates a7 and the locking plates b8 completely pass through the holes of the valve disc fixing plate 15, the elastic component 10 releases the elastic force, and the two ends of the slide rod 9 return to a shallower position of the slide rod limiting groove, and the angle between the locking plates a7 and the locking plates b8 becomes larger. Then the tool upper limit device 4 is tightened to complete the operation of fixing the wedge valve plate 14 by the tool upper limit device 4 and the tool lower limit device 5.

[0032] In some embodiments, the tool lower limit device 5 is in the shape of a square plate, with a channel in the center and threads on the inner wall of the channel. The tool lower limit device 5 is threadedly connected to the bottom end of the transmission rod 3 .

[0033] Among them, the tool lower limit device 5 has a variety of specifications to choose from, meeting the needs of maintenance of gate valves of different sizes.

[0034] In some embodiments, the elastic member 10 is a compression spring.

[0035] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gate valve maintenance tool, characterized in that: The invention comprises a support beam (1), a lifting nut (2), a transmission rod (3), a tool upper limit device (4), a tool lower limit device (5), and a separation device (6). The support beam (1) is provided with a transmission rod channel to adapt to the transmission rod (3), the support beam (1) is provided with a connecting bolt channel, the transmission rod channel and the connecting bolt channel of the support beam (1) are both detachable and connected to the separation device (6), the top end of the transmission rod (3) is detachable and connected to the separation device (6), the transmission rod (3) is provided with threads in the circumferential direction, the top end of the transmission rod (3) is threadedly connected to the two lifting nuts (2), the transmission rod (3) is threadedly connected to the tool upper limit device (4), and the bottom end of the transmission rod (3) is connected to the tool lower limit device (5).

2. A gate valve maintenance tool according to claim 1, characterized in that: The separation device (6) is a jack.

3. A gate valve maintenance tool according to claim 1, characterized in that: The tool upper limit device (4) is in the shape of a square plate, with a channel provided at the center, and the inner wall of the channel is provided with threads.

4. A gate valve maintenance tool according to claim 1, characterized in that: The tool lower limit device (5) comprises a locking piece a (7), a locking piece b (8), a slide bar (9), an elastic component (10), and a support frame (11); the bottom end of the locking piece a (7) is rotatably connected to the bottom end of the locking piece b (8); the locking piece a (7) and the locking piece b (8) are provided with a slide bar limit groove on one side opposite to each other; the two ends of the slide bar are spherical with a diameter larger than the diameter of the rod of the slide bar (9); the two ends of the slide bar (9) are located in the slide bar limit groove; the depth of the slide bar limit groove is larger than the diameter of the spheres at the two ends of the slide bar (9); the entrance size of the slide bar limit groove is adapted to the slide bar ( 9) rod portion, the bottoms of the locking piece a (7) and the locking piece b (8) are connected to the top of the elastic component (10), the bottom of the elastic component (10) is connected to the bottom of the support frame (11), the top of the support frame (11) is fixedly connected to the bottom of the transmission rod (3), a support rod is provided on the inner wall of the top of the support frame (11), the support rod is fixedly connected to the middle of the sliding rod (9), the support rod is rotatably connected to the bottom of the locking piece a (7) and the locking piece b (8), and the side of the support frame (11) is provided with an opening to accommodate the locking piece a (7) and the locking piece b (8).

5. A gate valve maintenance tool according to claim 1, characterized in that: The tool lower limit device (5) is in the shape of a square plate, with a channel provided in the center, the inner wall of the channel is provided with threads, and the tool lower limit device (5) is threadedly connected to the bottom end of the transmission rod (3).

6. A gate valve maintenance tool according to claim 4, characterized in that: The elastic component (10) is a compression spring.

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