Rust removal device for metal shell of transformer

Abstract

The utility model belongs to the technical field of transformer derusting, and particularly relates to a transformer metal shell derusting device which comprises a shot blasting derusting machine and a communicating pipe, one end of the communicating pipe is fixedly connected with a shunt connecting pipe, and one end of the shunt connecting pipe is fixedly connected with two wear-resistant hoses. One end of each wear-resistant hose is fixedly connected with a hard-structure spray head, the two hard-structure spray heads are hinged to each other, an adjusting air bag is fixedly connected between the two hard-structure spray heads, and a suction air pipe is fixedly connected to the side wall of the adjusting air bag; the abrasive can be divided into two strands and sprayed outwards in a V-shaped inclined mode when the gaps between the radiating fins of the transformer are derusted by means of dividing the abrasive through the dividing connecting pipe and dividing and spraying the abrasive through the hard-structure spraying head and adjusting the angle of the hard-structure spraying head through the adjusting air bag and the suction air pipe. And the grinding materials can be completely sprayed to the side walls of the cooling fins on the two sides of the gaps, and the rust removal efficiency and the rust removal effect in the gaps of the cooling fins are improved.

Description

Technical Field

[0001] This utility model belongs to the field of transformer rust removal technology, specifically relating to a rust removal device for transformer metal shells. Background Technology

[0002] Transformer metal casings are exposed to harsh environments such as humidity and dust for extended periods, making their surfaces and the gaps between heat dissipation fins prone to corrosion. This affects heat dissipation efficiency and equipment lifespan. Shot blasting is widely used for rust removal from transformer casings. Conventional shot blasting equipment has a single-direction or fixed-angle design for the nozzle. When the nozzle is not inserted into the gap between two adjacent heat dissipation fins and the nozzle is aligned with the gap direction, a large amount of abrasive impacts the main casing of the transformer, with only a small amount of abrasive on the periphery contacting the gap sidewalls. This results in a significant waste of abrasive. When the nozzle is tilted, a large amount of abrasive is intercepted by the heat dissipation fins and cannot penetrate deep into the gap. When the nozzle is inserted into the gap, the space between adjacent heat dissipation fins limits the nozzle's angle adjustment. This not only fails to address the issue of a large amount of abrasive failing to impact the heat dissipation fin sidewalls but also requires repeated adjustments to the nozzle's position and angle. When removing rust from the heat dissipation fin sidewalls on both sides of the gap, this process is inconvenient, inefficient, and wasteful of abrasive. Utility Model Content

[0003] This invention provides a rust removal device for the metal casing of a transformer, which can effectively improve the rust removal efficiency and effect in the gaps between heat dissipation fins.

[0004] This utility model provides the following technical solution: a rust removal device for a transformer metal casing, comprising a shot blasting rust removal machine and a connecting pipe, one end of which is fixedly connected to a diversion connecting pipe, and one end of which is fixedly connected to two wear-resistant hoses, one end of each of the two wear-resistant hoses being fixedly connected to a rigid structure nozzle, the two rigid structure nozzles being hinged to each other, and an adjusting airbag being fixedly connected between the two rigid structure nozzles, the side wall of which is fixedly connected to a suction air pipe.

[0005] Each of the two rigid nozzles is fixedly connected to a torsion spring shaft on one side of the opposite side, and the two torsion spring shafts are coaxial.

[0006] A support rod is fixedly connected to one side of the diversion connection pipe, and the support rod is fixedly connected to the torsion spring shaft connection shaft.

[0007] In this embodiment, each of the two rigid nozzles is fixedly connected to a limiting block on one side of the opposite side, and the two limiting blocks abut against each other.

[0008] The other end of the suction pipe is fixedly connected to a suction pump, which is fixedly connected to the side wall of the shot blasting and rust removal machine.

[0009] A control switch is installed on the suction pipe, and the control switch is fixedly connected to the outer wall of the connecting pipe.

[0010] The suction tube is fitted with a binding ring, which is fixedly connected to the outer wall of the connecting tube.

[0011] The beneficial effects of this utility model are as follows: by using the diversion connecting pipe to divert the abrasive and the hard structure nozzle to divert and spray the abrasive, and by adjusting the angle of the hard structure nozzle with the adjusting airbag and suction pipe, the abrasive can be divided into two streams and sprayed outward in a "V" shape when removing rust from the gaps between transformer heat sink fins. This allows the abrasive to be completely sprayed onto the side walls of the heat sink fins on both sides of the gap, effectively improving the rust removal efficiency and effect in the gaps between the heat sink fins.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0014] Fig. 2 This is a schematic diagram of the diversion connecting pipe and the regulating airbag in this utility model;

[0015] Fig. 3 This is a schematic diagram of the structure connecting the rotating shaft and the support rod in this utility model.

[0016] In the diagram: 1. Shot blasting machine; 11. Connecting pipe; 2. Diverting connecting pipe; 21. Wear-resistant hose; 22. Rigid structure nozzle; 23. Torsion spring shaft; 24. Support rod; 25. Limiting block; 3. Adjusting airbag; 31. Suction pipe; 32. Suction pump; 33. Control switch; 34. Bundling strap. Detailed Implementation

[0017] Please see Figs. 1-3 The present invention provides the following technical solution: a rust removal device for a transformer metal casing, comprising a shot blasting rust removal machine 1 and a connecting pipe 11, one end of the connecting pipe 11 is fixedly connected to a diversion connecting pipe 2, one end of the diversion connecting pipe 2 is fixedly connected to two wear-resistant hoses 21, one end of each of the two wear-resistant hoses 21 is fixedly connected to a rigid structure nozzle 22, the two rigid structure nozzles 22 are hinged to each other, an adjusting airbag 3 is fixedly connected between the two rigid structure nozzles 22, and a suction air pipe 31 is fixedly connected to the side wall of the adjusting airbag 3.

[0018] In this implementation plan: When removing rust from the transformer casing at a flat surface, the two hard-structure nozzles 22 are in a combined parallel state, with their output ends facing the same direction. The shot blasting machine 1 delivers abrasive and spraying medium to the connecting pipe 11. The operator holds the connecting pipe 11 and the diversion connecting pipe 2 to control and adjust the spraying position of the hard-structure nozzles 22. The abrasive and medium are sprayed onto the surface of the transformer casing through the two hard-structure nozzles 22 for rust removal. When it is necessary to remove rust from the gaps in the heat sink fins, the operator controls the suction pump 32 to deliver gas to the suction pipe 31 via the control switch 33. After the gas enters the regulating air bag 3, the regulating air bag 3 will expand outward, causing the two hard-structure nozzles 22 to rotate outward, so that the diversion connecting pipe 2, the wear-resistant hose 21, and the hard-structure nozzles 22 are in a "Y" shape, with the output ports of the two hard-structure nozzles 22 facing outward respectively. During the process of spraying the abrasive and spraying medium onto the sidewalls of the heat dissipation fins on both sides of the gap, the wear-resistant hose 21 deforms and bends so that the hard structure nozzles 22 can rotate relative to each other. The abrasive and spraying medium in the connecting pipe 11 are split through the diversion connecting pipe 2, and then sprayed outward through the two wear-resistant hoses 21 and the two hard structure nozzles 22. The abrasive and spraying medium are split into two streams and sprayed outward at an "V" angle. The abrasive can be completely sprayed onto the sidewalls of the heat dissipation fins on both sides of the gap, effectively improving the rust removal efficiency and effect in the gap of the heat dissipation fins. After the rust removal in the gap is completed, the suction pump 32 is controlled by the control switch 33 to draw the gas in the regulating air bag 3, so that the two hard structure nozzles 22 are reset until the two limit blocks 25 abut against each other. During the operation, the personnel can manually adjust the position and orientation of the two hard structure nozzles 22 to meet the actual needs.

[0019] Two rigid nozzles 22 are fixedly connected to torsion spring shafts 23 on opposite sides, and the two torsion spring shafts 23 are coaxial. By setting the torsion spring shafts 23, the two rigid nozzles 22 can rotate relative to each other, and after the gas in the regulating airbag 3 is expelled, the elastic force of the torsion spring shafts 23 can assist the rigid nozzles 22 to reset.

[0020] A support rod 24 is fixedly connected to one side of the diversion connection pipe 2. The support rod 24 is fixedly connected to the torsion spring shaft 23. By setting the support rod 24, the rigid structure nozzle 22 can be supported, so that the rigid structure nozzle 22 and the diversion connection pipe 2 are in a horizontal state.

[0021] Two rigid structure nozzles 22 are fixedly connected to limit blocks 25 on opposite sides, and the two limit blocks 25 abut against each other. By setting the limit blocks 25, the two rigid structure nozzles 22 can be limited so that the rigid structure nozzles 22 can face the same direction when they are closed, avoiding excessive convergence and causing the abrasive and sprayed medium sprayed by the two rigid structure nozzles 22 to cross and obstruct each other.

[0022] The other end of the suction pipe 31 is fixedly connected to a suction pump 32, which is fixedly connected to the side wall of the shot blasting machine 1. By setting the suction pump 32, gas can be pumped to the regulating air bag 3 and the suction pipe 31 to drive the regulating air bag 3 to expand and contract, thereby adjusting the position of the hard structure nozzle 22.

[0023] A control switch 33 is installed on the suction pipe 31 and is fixedly connected to the outer wall of the connecting pipe 11. The operation of the suction pump 32 can be controlled by setting the control switch 33, and the control switch 33 is electrically connected to the suction pump 32.

[0024] A strapping ring 34 is fitted on the outside of the suction pipe 31, and the strapping ring 34 is fixedly connected to the outer wall of the connecting pipe 11. By setting the strapping ring 34, the suction pipe 31 can be limited and arranged by the connecting pipe 11, so that the connecting pipe 11 will not be messy and obstruct people's movement.

[0025] The working principle and usage process of this utility model are as follows: When removing rust from the outer shell of a transformer on a flat surface, the two hard structure nozzles 22 are in a combined parallel state, with the output ends of the two hard structure nozzles 22 facing the same direction. The shot blasting machine 1 delivers abrasive and spraying medium to the connecting pipe 11. The operator holds the connecting pipe 11 and the diversion connecting pipe 2 to control and adjust the spraying position of the hard structure nozzles 22. The abrasive and medium are sprayed onto the surface of the transformer shell through the two hard structure nozzles 22 for rust removal. When it is necessary to remove rust from the gaps between the heat dissipation fins, the operator controls the suction air pump 32 to deliver gas to the suction air pipe 31 through the control switch 33. After the gas enters the regulating air bag 3, the regulating air bag 3 will expand outward. The output ports of the two hard structure nozzles 22 are respectively directed toward the heat dissipation fin sidewalls on both sides of the gap between the heat dissipation fins. The abrasive and spraying medium are split into two streams and sprayed outward at an "V" angle. The abrasive can be completely sprayed onto the heat dissipation fin sidewalls on both sides of the gap.

Claims

1. A rust removal device for transformer metal casing, characterized in that: The system includes a shot blasting machine (1) and a connecting pipe (11). One end of the connecting pipe (11) is fixedly connected to a diversion connecting pipe (2). One end of the diversion connecting pipe (2) is fixedly connected to two wear-resistant hoses (21). One end of each of the two wear-resistant hoses (21) is fixedly connected to a hard structure nozzle (22). The two hard structure nozzles (22) are hinged together. An adjusting air bag (3) is fixedly connected between the two hard structure nozzles (22). A suction air pipe (31) is fixedly connected to the side wall of the adjusting air bag (3).

2. The rust removal device for a transformer metal casing according to claim 1, characterized in that: Each of the two rigid nozzles (22) is fixedly connected to a torsion spring shaft (23) on one side of the opposite side, and the two torsion spring shafts (23) are coaxial.

3. The rust removal device for a transformer metal casing according to claim 2, characterized in that: A support rod (24) is fixedly connected to one side of the diversion connection pipe (2), and the support rod (24) is fixedly connected to the connecting shaft of the torsion spring shaft (23).

4. The rust removal device for a transformer metal casing according to claim 1, characterized in that: Each of the two rigid nozzles (22) is fixedly connected to a limiting block (25) on one side of the opposite side, and the two limiting blocks (25) abut against each other.

5. A rust removal device for a transformer metal casing according to claim 1, characterized in that: The other end of the suction pipe (31) is fixedly connected to a suction pump (32), which is fixedly connected to the side wall of the shot blasting machine (1).

6. The rust removal device for a transformer metal casing according to claim 1, characterized in that: A control switch (33) is installed on the suction pipe (31), and the control switch (33) is fixedly connected to the outer wall of the connecting pipe (11).

7. A rust removal device for a transformer metal casing according to claim 1, characterized in that: The suction pipe (31) is fitted with a binding ring (34) on the outside, and the binding ring (34) is fixedly connected to the outer wall of the connecting pipe (11).

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