Tool for replacing gasket of transformer radiator with oil and using method of tool

Abstract

The invention relates to a tool for replacing a transformer radiator gasket with oil and a using method thereof, and belongs to the technical field of electrical equipment overhaul, the tool comprises an oil pipe connecting mechanism used for connecting radiator fin oil pipes, and a hollow tubular sealing hoop stud is integrally arranged in the middle of the bottom of the oil pipe connecting mechanism. The bottom of the sealing hoop stud is connected with a ball valve pipe, a ball valve used for opening and closing the ball valve pipe vertically is arranged in the ball valve pipe, the bottom of the ball valve pipe is connected with a relay pipe, a torsion bar is arranged in the relay pipe in a penetrating mode, the upper portion of the relay pipe is large in aperture, and the lower portion of the relay pipe is small in aperture. An elastic steel sheet returning to the inner center is arranged at the top end of the inner hexagonal sleeve, and the torsion bar penetrates through the small hole in the relay pipe. When the tool is used for replacing the transformer radiator gasket with oil, the overall replacement operation is time-saving and labor-saving, and the economic loss can be greatly reduced.

Description

Technical Field

[0001] The invention relates to a transformer radiator gasket oil replacement tool and a use method thereof, belonging to the technical field of electrical equipment maintenance. Background Art

[0002] Oil-immersed transformers use oil as the main insulation means of transformers, and rely on oil as cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling and forced oil circulation. The main components of the transformer are iron core, winding, oil tank, oil pillow, respirator, explosion-proof pipe, radiator, insulating bushing, tap changer, gas relay, thermometer, oil purifier, etc. In the power system, oil-immersed transformer bushing is used for electrical connection and mechanical support between power transformers and transmission lines, and plays the role of power transmission, electrical insulation and mechanical support.

[0003] The plate radiator is a heat exchange device used on oil-immersed transformers. The conventional plate radiator is welded by upper and lower oil collecting pipes and multiple groups of radiating fins. The upper oil collecting pipe channel is located in the middle of the upper end of the radiating fin, and the lower oil collecting pipe channel is located in the middle of the lower end of the radiating fin.

[0004] As the fin radiator runs for a long time, the rubber gasket of the oil drain bolt at the lower end needs to be replaced due to aging. The aging problem of the rubber gasket will cause the insulating oil in the radiator fin to leak. The conventional way to replace the gasket is to close the radiator fin butterfly valve and drain the transformer insulating oil before replacing it, which requires powering off the transformer. This traditional method of replacing the gasket after powering off and pumping out the oil not only increases the labor intensity, is time-consuming and labor-intensive, but also affects industrial production and people's lives, causing economic losses. Summary of the invention

[0005] The purpose of the present invention is to solve the technical problems in the prior art that the operation of replacing rubber gaskets is labor-intensive, time-consuming and labor-intensive, and to provide a transformer radiator gasket oil replacement tool and a method for using the tool.

[0006] The present invention is achieved through the following technical solutions: That is, a transformer radiator gasket oil replacement tool, comprising an oil pipe connecting mechanism for connecting the radiator oil pipe, and a hollow tubular sealing hoop stud is integrally provided at the middle position of the bottom of the oil pipe connecting mechanism; A ball valve tube is connected to the bottom of the sealing hoop stud, a ball valve is arranged inside the ball valve tube for opening and closing the ball valve tube up and down, a relay tube is connected to the bottom of the ball valve tube, and a torsion rod is passed through the relay tube; The upper part of the relay tube has a large aperture, the lower part of the relay tube has a small aperture, a hexagon socket is arranged on the top of the torsion bar, an elastic steel sheet returning to the center inward is arranged on the top of the hexagon socket, and the torsion bar passes through the small aperture inside the relay tube.

[0007] The tool of the present invention is used to replace the transformer radiator gasket with oil, and the overall replacement operation is time-saving and labor-saving, and can greatly reduce economic losses.

[0008] Further preferably, the oil pipe connection mechanism includes a sealing arc plate, a U-shaped bolt, a sealing hoop stud integrally arranged at the middle position of the bottom of the sealing arc plate, the sealing arc plate is a metal device, the top of the sealing arc plate is covered with sealing rubber, the two wings of the sealing arc plate are provided with strip holes, the U-shaped bolt is inserted into the strip holes of the two wings of the sealing arc plate, and the bottom of the U-shaped bolt is equipped with a gasket and a nut for fastening the sealing arc plate and the oil pipe at the bottom of the transformer radiator. The tool of the present invention is connected to the radiator oil pipe by using this structure, which is not only simple and stable in structure itself, but also convenient for disassembly and assembly.

[0009] Further preferably, a hexagonal bolt is welded at the bottom end of the torsion bar to facilitate the use of tools to twist the torsion bar.

[0010] Preferably, the bottom of the sealing hoop stud and the ball valve tube, and the bottom of the ball valve tube and the relay tube are connected by threads. The threaded connection is not only simple in structure, but also very convenient for assembly and disassembly.

[0011] Further preferably, a ball valve pipe screw hole is provided at the top of the ball valve pipe, a ball valve pipe sealing ring groove is provided at the top of the ball valve pipe screw hole, a sealing gasket is installed in the ball valve pipe sealing ring groove, and the ball valve pipe screw hole is connected to the external thread at the bottom of the sealing hoop stud. The installation and sealing structure between the ball valve pipe and the sealing hoop stud is convenient for assembly and disassembly, and has a good sealing effect.

[0012] Further preferably, a ball valve tube stud is provided at the bottom of the ball valve tube, a relay tube screw hole is provided at the top of the relay tube, a relay tube sealing ring clamping groove is provided at the top of the relay tube screw hole, a sealing gasket is installed in the relay tube sealing ring clamping groove, and the ball valve tube stud is installed with the relay tube screw hole through threaded matching. The installation and sealing structure between the relay tube and the ball valve tube is easy to assemble and disassemble, and has a good sealing effect.

[0013] Further preferably, the inner hole of the relay tube is composed of a relay tube thick-diameter tube hole and a relay tube thin-diameter tube hole, and the inner wall of the relay tube thin-diameter tube hole is provided with at least one relay tube sealing ring groove, and a sealing gasket is provided in the relay tube sealing ring groove.

[0014] The present invention also provides a method for using a transformer radiator gasket oil replacement tool, comprising the following steps: Step 1: The sealing arc plate is closely attached to the lower side of the oil pipe wall of the radiator fin, and the bolt opening of the radiator fin is inserted into the pipe hole of the sealing arc plate; Step 2: Pass the two U-shaped bolts through the upper part of the radiator oil pipe and into the strip holes on both sides respectively, and insert the gasket and nut from the bottom to ensure that they do not fall off; Step 3: Insert the torsion bar into the relay tube and weld the hexagonal bolt on the bottom end; Step 4: Connect the lower end of the ball valve tube to the top of the relay tube through threads and tighten them to ensure sealing; Step 5: Combine the top of the ball valve tube and the bottom of the sealing hoop stud through threads and tighten them to ensure sealing; Step 6: Screw the ball head inside the ball valve tube until the tube hole is fully open; Step 7: Push the torsion bar until the top of the torsion bar is fully engaged with the oil drain bolt nut; Step 8: Use a wrench to twist the torsion bar until the drain bolt nut falls off; Step 9: After partially retracting the torsion bar, push the top of the torsion bar again until it contacts the oil drain bolt nut, and twist the torsion bar back and forth to scrape the original gasket position; Step 10: Pull the torsion bar back to the minimum position; Step 11: Completely close the ball valve pipe valve; Step 12: Disassemble the relay pipe and remove the gasket and bolts. The bolt removal work is completed; Step 13: Place the heightening block in the hexagon socket, and fix the new bolt and new gasket in the hexagon socket as they were; Step 14: Connect the upper end of the relay pipe to the ball valve pipe through threads and ensure sealing; Step 15: Turn the ball valve knob of the ball valve pipe to the fully open position; Step 16: Push the torsion bar to the top and turn the torsion bar clockwise until the drain bolt and nut are fully tightened; Step 17: Pull the torsion bar back to the minimum position; Step 18: Completely close the ball valve pipe valve; Step 19: Remove the relay tube and torsion bar assembly; Step 20: Slowly turn the knob of the ball valve tube to drain the internal insulating oil and continue to observe whether there is insulating oil leakage. If there is no leakage, remove the U-shaped bolt.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The tool of the present invention is used to replace the transformer radiator gasket with oil, and the overall replacement operation is time-saving and labor-saving, and can greatly reduce economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.

[0018] Figure 2 It is a schematic diagram of the usage status structure of a specific implementation mode of the present invention.

[0019] Figure 3 It is a schematic diagram of the explosion structure of a specific embodiment of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the ball valve tube in a specific implementation manner of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the relay tube in a specific implementation manner of the present invention.

[0022] Figure 6 It is a schematic diagram of the cross-sectional structure of the relay tube in a specific implementation manner of the present invention.

[0023] In the figure: 1. Sealing arc plate; 2. Strip hole; 3. Sealing hoop tube hole; 4. Sealing hoop stud; 5. Ball valve tube screw hole; 6. Ball valve; 7. Ball valve tube; 8. Knob nut; 9. Ball valve tube stud; 10. Ball valve tube sealing ring slot; 11. Relay tube screw hole; 12. Relay tube thick-diameter tube hole; 13. Relay tube sealing ring slot; 14. Relay tube; 15. Relay tube thin-diameter tube hole; 16. Relay tube sealing ring slot; 17. Elastic steel sheet; 18. Hexagon socket sleeve; 19. Torsion bar; 20. Hexagon bolt; 21. U-shaped bolt; 22. Oil drain bolt and nut. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0025] like Figures 1 to 6 The transformer radiator gasket oil replacement tool shown includes an oil pipe connecting mechanism for connecting the radiator oil pipe, and a hollow tubular sealing hoop stud 4 is integrally provided at the middle position of the bottom of the oil pipe connecting mechanism; The bottom of the sealing hoop stud 4 is connected to a ball valve tube 7, a ball valve 6 for opening and closing the ball valve tube 7 is arranged inside the ball valve tube 7, a switch knob nut 8 is arranged on the ball valve 6, a relay tube 14 is connected to the bottom of the ball valve tube 7, a torsion rod 19 is passed through the relay tube 14; The upper part of the relay tube 14 has a large aperture, and the lower part of the relay tube 14 has a small aperture. A hexagon socket 18 is provided at the top of the torsion rod 19, and an elastic steel sheet 17 that returns to the center inward is provided at the top of the hexagon socket 18. The torsion rod 19 passes through the small aperture inside the relay tube, and a hexagonal bolt 20 is welded at the bottom end of the torsion rod 19 to facilitate the use of tools to twist the torsion rod 19.

[0026] The tool of the present invention is used to replace the transformer radiator gasket with oil, and the overall replacement operation is time-saving and labor-saving, and can greatly reduce economic losses.

[0027] The oil pipe connection mechanism includes a sealing arc plate 1, a U-shaped bolt 21, a sealing hoop stud 4 is integrally arranged at the middle position of the bottom of the sealing arc plate 1, a sealing hoop pipe hole 3 connected to the sealing hoop stud 4 is opened in the center of the sealing arc plate 1, the sealing arc plate 1 is a metal device, the top of the sealing arc plate 1 is covered with sealing rubber, and the two wings of the sealing arc plate 1 are opened with strip holes 2, the U-shaped bolt 21 is inserted into the strip holes 2 on the two wings of the sealing arc plate 1, and the bottom end of the U-shaped bolt 21 is equipped with a gasket and a nut for fastening the sealing arc plate 1 and the oil pipe at the bottom of the transformer radiator. The tool of the present invention is connected to the radiator oil pipe by using this structure, which is not only simple and stable in structure itself, but also convenient for disassembly and assembly.

[0028] The bottom of the sealing hoop stud 4 and the ball valve tube 7 are connected by threads, as well as the bottom of the ball valve tube 7 and the relay tube 14. The threaded connection is not only simple in structure, but also very convenient for assembly and disassembly.

[0029] Among them, a ball valve pipe screw hole 5 is provided at the top of the ball valve pipe 7, a ball valve pipe sealing ring clamping groove 10 is provided at the top of the ball valve pipe screw hole 5, a sealing gasket is installed in the ball valve pipe sealing ring clamping groove 10, and the ball valve pipe screw hole 5 is connected to the external thread at the bottom of the sealing hoop stud 4. The installation and sealing structure between the ball valve pipe 7 and the sealing hoop stud 4 is convenient to assemble and disassemble, and the sealing effect is good.

[0030] Among them, a ball valve tube stud 9 is provided at the bottom of the ball valve tube 7, a relay tube screw hole 11 is provided at the top of the relay tube 14, a relay tube sealing ring clamping groove 13 is provided at the top of the relay tube screw hole 11, a sealing gasket is installed in the relay tube sealing ring clamping groove 13, and the ball valve tube stud 9 is installed with the relay tube screw hole 11 through threaded matching. The installation and sealing structure between the relay tube 14 and the ball valve tube 7 is convenient for assembly and disassembly, and has a good sealing effect.

[0031] The inner hole of the relay tube 14 is composed of a relay tube thick-diameter tube hole 12 and a relay tube thin-diameter tube hole 15. The inner wall of the relay tube thin-diameter tube hole 15 is provided with at least one relay tube sealing ring groove 16, and a sealing gasket is arranged in the relay tube sealing ring groove 16.

[0032] The present invention also provides a method for using a transformer radiator gasket oil replacement tool, comprising the following steps: Step 1: The sealing arc plate 1 is closely attached to the lower side of the oil pipe wall of the radiator fin, and the bolt opening of the radiator fin is inserted into the pipe hole of the sealing arc plate 1; Step 2: Pass two U-shaped bolts 21 through the upper part of the radiator oil pipe and into the strip holes 2 on both sides respectively, and insert the gasket and nut from the bottom to ensure that they do not fall off; Step 3: The torsion bar 19 is inserted into the relay tube 14 and a hexagonal bolt 20 is welded on the bottom end; Step 4: The lower end of the ball valve tube 7 is threadedly connected to the top of the relay tube 14 and tightened to ensure sealing; Step 5: The top end of the ball valve tube 7 is threadedly connected to the bottom end of the sealing hoop stud 4 and tightened to ensure sealing; Step 6: Screw the ball head inside the ball valve tube 7 until the tube hole is fully open; Step 7: Push the torsion bar 19 until the top of the torsion bar 19 is fully engaged with the drain bolt nut 22; Step 8: Use a wrench to tighten the torsion bar 19 until the drain bolt nut 22 falls off; Step 9: After partially retracting the torsion bar 19, push the top end of the torsion bar 19 again until it contacts the oil drain bolt nut 22, and reciprocately twist the torsion bar 19 to scrape the original gasket position; Step 10: Pull the torsion bar 19 back to the minimum position; Step 11: Completely close the ball valve pipe 7 valve; Step 12: Disassemble the relay tube 14 and remove the gasket and bolts, and the bolt removal work is completed; Step 13: Place the heightening block in the hexagon socket 18, and fix the new bolt and the new gasket in the hexagon socket 18 as they are; Step 14: Connect the upper end of the relay pipe 14 to the ball valve pipe 7 through threads and ensure sealing; Step 15: Turn the ball valve knob of ball valve tube 7 to fully open; Step 16: Push the torsion bar 19 to the top and turn the torsion bar 19 clockwise until the drain bolt nut 22 is completely tightened; Step 17: Pull the torsion bar 19 back to the minimum position; Step 18: Completely close the ball valve pipe 7 valve; Step 19: Remove the relay tube 14 and the torsion bar 19 assembly; Step 20: Slowly turn the knob of the ball valve tube 7 to discharge the internal insulating oil and continue to observe whether there is insulating oil leakage. If there is no leakage, remove the U-shaped bolt 21.

[0033] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0034] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0035] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transformer radiator gasket oil replacement tool, characterized in that: It comprises an oil pipe connecting mechanism for connecting the oil pipe of the radiator fin, wherein a hollow tubular sealing hoop stud (4) is integrally provided at the middle position of the bottom of the oil pipe connecting mechanism; The bottom of the sealing hoop stud (4) is connected to a ball valve tube (7), a ball valve (6) for opening and closing the ball valve tube (7) is arranged inside the ball valve tube (7), a relay tube (14) is connected to the bottom of the ball valve tube (7), and a torsion rod (19) is inserted into the relay tube (14); The upper part of the relay tube (14) has a large aperture, the lower part of the relay tube (14) has a small aperture, the top of the torsion rod (19) is provided with a hexagon socket (18), the top of the hexagon socket (18) is provided with an elastic steel sheet (17) returning to the center inward, and the torsion rod (19) passes through the small aperture inside the relay tube.

2. A transformer radiator gasket oil replacement tool according to claim 1, characterized in that: The oil pipe connection mechanism comprises a sealing arc plate (1), a U-shaped bolt (21), a sealing hoop stud (4) integrally arranged at the middle position of the bottom of the sealing arc plate (1), the sealing arc plate (1) being a metal device, the top of the sealing arc plate (1) being covered with sealing rubber, strip holes (2) being provided on both wings of the sealing arc plate (1), the U-shaped bolt (21) being inserted into the strip holes (2) on both wings of the sealing arc plate (1), and a gasket and a nut being provided at the bottom end of the U-shaped bolt (21) for fastening the sealing arc plate (1) and the oil pipe at the bottom end of the transformer radiator.

3. A transformer radiator gasket oil replacement tool according to claim 1, characterized in that: A hexagonal bolt (20) is welded to the bottom end of the torsion bar (19).

4. A transformer radiator gasket oil replacement tool according to claim 1, characterized in that: The bottom of the sealing hoop stud (4) and the ball valve tube (7) as well as the bottom of the ball valve tube (7) and the relay tube (14) are connected via threads.

5. The transformer radiator gasket oil replacement tool according to claim 1, characterized in that: A ball valve pipe screw hole (5) is provided at the top of the ball valve pipe (7), a ball valve pipe sealing ring groove (10) is provided at the top of the ball valve pipe screw hole (5), a sealing gasket is installed in the ball valve pipe sealing ring groove (10), and the ball valve pipe screw hole (5) is connected to the external thread at the bottom of the sealing hoop stud (4).

6. A transformer radiator gasket oil replacement tool according to claim 1, characterized in that: A ball valve pipe stud (9) is provided at the bottom of the ball valve pipe (7), a relay pipe screw hole (11) is provided at the top of the relay pipe (14), a relay pipe sealing ring groove (13) is provided at the top of the relay pipe screw hole (11), a sealing gasket is installed in the relay pipe sealing ring groove (13), and the ball valve pipe stud (9) and the relay pipe screw hole (11) are installed by threaded matching.

7. The transformer radiator gasket oil replacement tool according to claim 1, characterized in that: The inner hole of the relay tube (14) is composed of a relay tube large diameter tube hole (12) and a relay tube small diameter tube hole (15) which are connected to each other. The inner wall of the relay tube small diameter tube hole (15) is provided with at least one relay tube sealing ring groove (16), and a sealing gasket is provided in the relay tube sealing ring groove (16).

8. A method for using a transformer radiator gasket oil replacement tool, characterized in that: The following steps are involved: Step 1: The sealing arc plate (1) is closely attached to the lower side of the oil pipe wall of the radiator fin, and the bolt opening of the radiator fin is inserted into the pipe hole of the sealing arc plate (1); Step 2: Pass two U-shaped bolts (21) through the upper part of the radiator oil pipe and into the strip holes (2) on both sides respectively, and insert the gasket and nut from the bottom to ensure that they do not fall off; Step 3: Insert the torsion bar (19) into the relay tube (14) and weld the hexagonal bolt (20) at the bottom end; Step 4: The lower end of the ball valve tube (7) is screwed together with the top end of the relay tube (14) and tightened to ensure sealing; Step 5: The top end of the ball valve tube (7) is threadedly connected to the bottom end of the sealing hoop stud (4) and tightened to ensure sealing; Step 6: Screw the ball head inside the ball valve tube (7) until the tube hole is fully open; Step 7: Push the torsion bar (19) until the top of the torsion bar (19) is fully engaged with the drain bolt nut (22); Step 8: Use a wrench to tighten the torsion bar (19) until the drain bolt nut (22) falls off; Step 9: After partially retracting the torsion bar (19), push the top end of the torsion bar (19) again until it contacts the oil drain bolt nut (22), and reciprocately twist the torsion bar (19) to scrape the original gasket position; Step 10: Pull the torsion bar (19) back to the minimum position; Step 11: Completely close the ball valve tube (7); Step 12: Disassemble the relay tube (14) and remove the gasket and bolts. The bolt removal work is completed; Step 13: Place the heightening block in the hexagon socket (18), and fix the new bolt and the new gasket in the hexagon socket (18) as they were; Step 14: Connect the upper end of the relay pipe (14) to the ball valve pipe (7) through threads and ensure sealing; Step 15: Turn the ball valve knob of the ball valve tube (7) to the fully open position; Step 16: Push the torsion bar (19) to the top and turn the torsion bar (19) clockwise until the drain bolt nut (22) is fully tightened; Step 17: Pull the torsion bar (19) back to the minimum position; Step 18: Completely close the ball valve tube (7); Step 19: Remove the relay tube (14) and torsion bar (19) assembly; Step 20: Slowly turn the knob of the ball valve tube (7) to drain the internal insulating oil and continue to observe whether there is any insulating oil leakage. If there is no leakage, remove the U-shaped bolt (21).

Images