Non-power-cut air pump replacement structure for gas insulation transformer

Abstract

The utility model relates to an uninterruptible air pump replacement structure for a gas insulation transformer, and belongs to the technical field of gas insulation transformers, the uninterruptible air pump replacement structure comprises an air box and a heat dissipation mechanism connected to the air box, and a plurality of air outlet pipes are connected between the air outlet end of the heat dissipation mechanism and the air box; a plurality of air inlet structures are connected between the air inlet end of the heat dissipation mechanism and the air box and arranged at the positions, close to the bottom, of the air box. The air pump is arranged below the heat dissipation mechanism, the relative low-temperature environment is beneficial to the service life of the air pump, the air pump is convenient to replace, operation, maintenance and inspection are very convenient, the two ends of the air pump are connected with a transverse communicating pipe and a longitudinal communicating pipe correspondingly, the air pump communicates with butterfly valves on the two sides through the transverse communicating pipe and the longitudinal communicating pipe, and therefore the heat dissipation efficiency of the air pump is improved. The independent ball valves are installed on the transverse communicating pipe and the longitudinal communicating pipe, the interior of the air pump can be vacuumized and inflated through the independent ball valves, the air pump is replaced under the condition that operation of the transformer is not affected, and power failure operation of the transformer is not needed.

Description

Technical Field

[0001] This application relates to the technical field of gas-insulated transformers, and particularly to a structure for replacing an air pump without power outage for a gas-insulated transformer. Background Art

[0002] Due to the advantages of being non-flammable, non-explosive, having high safety, and being able to achieve high voltage and large capacity, gas-insulated transformers have been widely used in AC power grids, especially suitable for underground substations, areas with concentrated population in big cities, and places with high safety requirements. At present, DC power transmission has developed rapidly in China. The transformers used in conjunction with it have extremely high safety requirements and must also meet the characteristics of being able to withstand AC and DC voltages at the same time. Traditional oil-immersed transformers cannot meet the safety requirements due to the potential danger of combustion and explosion. Therefore, using gas-insulated transformers is a good choice.

[0003] In the existing gas-insulated transformer structure, the air pump is generally installed on the upper side of the box body and the radiator, which is relatively difficult to maintain and replace the air pump, and power outage maintenance is required. Utility Model Content

[0004] The purpose of this application is to provide a structure for replacing an air pump without power outage for a gas-insulated transformer to solve the problems raised in the above background art.

[0005] To achieve the above purpose, this application provides a structure for replacing an air pump without power outage for a gas-insulated transformer, which adopts the following technical solutions:

[0006] A structure for replacing an air pump without power outage for a gas-insulated transformer includes an air box and a heat dissipation mechanism connected to the air box. There are multiple outlet pipes connected between the outlet end of the heat dissipation mechanism and the air box, and multiple intake structures are connected between the intake end of the heat dissipation mechanism and the air box. The intake structures are arranged at positions close to the bottom of the air box. The intake structure includes a box body pipe, a horizontal butterfly valve, a horizontal communication pipe, an air pump, a vertical communication pipe, a vertical butterfly valve, and an intake pipe. The box body pipe is fixedly connected to the air box, the horizontal butterfly valve is fixed at the end of the box body pipe, one end of the horizontal communication pipe is detachably fixed to the horizontal butterfly valve, the intake pipe is fixedly connected to the heat dissipation mechanism, the vertical butterfly valve is fixed at the bottom of the intake pipe, the vertical communication pipe is detachably fixed to the bottom end of the vertical butterfly valve, both ends of the air pump are respectively fixed to the ends of the horizontal communication pipe and the vertical communication pipe, and independent ball valves are installed on the surfaces of the horizontal communication pipe and the vertical communication pipe.

[0007] Flanges are provided on the surfaces of the horizontal communication pipe corresponding to the horizontal butterfly valve, and the horizontal communication pipe and the horizontal butterfly valve are fixed by studs.

[0008] The surfaces of the longitudinal connecting pipes corresponding to the longitudinal butterfly valves are also provided with flanges, and the longitudinal connecting pipes and the longitudinal butterfly valves are fixed by studs.

[0009] Preferably, in order to prevent birds or external factors from affecting the independent ball valve, protective nets are provided on the surfaces of the transverse connecting pipe and the longitudinal connecting pipe.

[0010] Preferably, in order to facilitate the disassembly and assembly of the air pump by the staff, a handle is installed on the surface of the longitudinal connecting pipe.

[0011] In summary, the present application includes at least one of the following beneficial technical effects: The structure for replacing the air pump of the gas-insulated transformer without power outage arranges the air pump below the heat dissipation mechanism. The relatively low-temperature environment here is not only beneficial to the service life of the air pump, but also facilitates the replacement of the air pump, and the operation and maintenance inspection are very convenient. The two ends of the air pump are respectively connected with a transverse connecting pipe and a longitudinal connecting pipe, and are connected to the butterfly valves on both sides through the transverse connecting pipe and the longitudinal connecting pipe. Independent ball valves are installed on the transverse connecting pipe and the longitudinal connecting pipe. The air pump can be evacuated and inflated through the independent ball valves, and the air pump can be replaced without affecting the operation of the transformer, without the need for power outage operation of the transformer. Description of the Drawings

[0012] Figure 1 It is the overall structural schematic diagram of the embodiment of the present application.

[0013] Figure 2 It is the structural schematic diagram of the embodiment of the present application from different perspectives.

[0014] Description of the reference numerals: 1. Gas tank; 2. Heat dissipation mechanism; 3. Outlet pipe; 4. Intake structure; 41. Box body pipe; 42. Transverse butterfly valve; 43. Transverse connecting pipe; 44. Air pump; 45. Longitudinal connecting pipe; 46. Longitudinal butterfly valve; 47. Inlet pipe; 48. Independent ball valve; 5. Handle. Detailed Description of the Embodiment

[0015] The following will further describe the present application in detail Figure 1-2 with reference to the attached

[0016] The embodiment of the present application discloses a structure for replacing the air pump of a gas-insulated transformer without power outage. Refer to Figure 1-2, including an air box 1 and a heat dissipation mechanism 2 connected to the air box 1. There are multiple outlet pipes 3 connected between the air outlet end of the heat dissipation mechanism 2 and the air box 1, and multiple air intake structures 4 are connected between the air intake end of the heat dissipation mechanism 2 and the air box 1. The air intake structure 4 is arranged at a position close to the bottom of the air box 1. The air intake structure 4 includes a box body pipe 41, a horizontal butterfly valve 42, a horizontal communication pipe 43, an air pump 44, a vertical communication pipe 45, a vertical butterfly valve 46 and an intake pipe 47. The box body pipe 41 is fixedly connected to the air box 1. The horizontal butterfly valve 42 is fixed at the end of the box body pipe 41. One end of the horizontal communication pipe 43 is detachably fixed to the horizontal butterfly valve 42. Flanges are provided on the surfaces of the horizontal communication pipe 43 and the horizontal butterfly valve 42 corresponding to each other. The horizontal communication pipe 43 and the horizontal butterfly valve 42 are fixed by studs. The intake pipe 47 is fixedly connected to the heat dissipation mechanism 2. The vertical butterfly valve 46 is fixed at the bottom of the intake pipe 47. The vertical communication pipe 45 is detachably fixed to the bottom end of the vertical butterfly valve 46. Flanges are also provided on the surfaces of the vertical communication pipe 45 and the vertical butterfly valve 46 corresponding to each other. The vertical communication pipe 45 and the vertical butterfly valve 46 are fixed by studs. Both ends of the air pump 44 are respectively fixed to the ends of the horizontal communication pipe 43 and the vertical communication pipe 45. Independent ball valves 48 are installed on the surfaces of the horizontal communication pipe 43 and the vertical communication pipe 45.

[0017] In order to prevent birds or external factors from affecting the independent ball valve 48, protective nets (not shown in the figure) are provided on the surfaces of the horizontal communication pipe 43 and the vertical communication pipe 45.

[0018] Refer to Figure 2 , in order to facilitate the staff to disassemble and assemble the air pump 44, a handle 5 is installed on the surface of the vertical communication pipe 45.

[0019] The implementation principle of the structure for replacing the air pump without power outage for a gas-insulated transformer in the embodiment of the present application is as follows:

[0020] First, the air pump 44 is arranged below the heat dissipation mechanism 2. This relatively low-temperature environment is not only beneficial to the service life of the air pump 44, but also facilitates the replacement of the air pump 44, and the operation and maintenance inspection are very convenient;

[0021] When replacing the air pump 44, first close the horizontal butterfly valve 42 and the vertical butterfly valve 46. Thereafter, recover the SF6 gas in the air pump 44, the horizontal connecting pipe 43 and the vertical connecting pipe 45 through the vacuum pump via the independent ball valve 48. After ensuring that the internal gas is completely pumped out, remove the air pump 44 by disassembling the studs at the horizontal butterfly valve 42 and the vertical butterfly valve 46. After disassembly, the air pump 44 can be moved away by a hand-pushed hydraulic truck. Then, assemble the new air pump 44 with the horizontal connecting pipe 43 and the vertical connecting pipe 45, and then assemble it to the horizontal butterfly valve 42 and the vertical butterfly valve 46 through the studs. Next, conduct vacuum pumping through the independent ball valve 48, and then fill it with SF6 gas. After meeting the operation requirements, open the horizontal butterfly valve 42 and the vertical butterfly valve 46 to achieve the connection between the air pump 44 and the box body and the heat dissipation mechanism 2. During the entire replacement process, the gas-insulated transformer can be in an operating state without power-off operation.

[0022] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A non-stop replacement air pump structure for a gas-insulated transformer, comprising an air box (1) and a heat dissipation mechanism (2) connected to the air box (1), a plurality of air outlet pipes (3) being connected between the air outlet end of the heat dissipation mechanism (2) and the air box (1), a plurality of air inlet structures (4) being connected between the air inlet end of the heat dissipation mechanism (2) and the air box (1), characterized in that: The air intake structure (4) is arranged at a position close to the bottom of the air box (1), and comprises a box body pipe (41), a transverse butterfly valve (42), a transverse connecting pipe (43), an air pump (44), a longitudinal connecting pipe (45), a longitudinal butterfly valve (46) and an air intake pipe (47). The box body pipe (41) is fixedly connected to the air box (1), the transverse butterfly valve (42) is fixed to the end of the box body pipe (41), and one end of the transverse connecting pipe (43) is detachably fixed. On the transverse butterfly valve (42), the air intake pipe (47) is fixedly connected to the heat dissipation mechanism (2), the longitudinal butterfly valve (46) is fixed to the bottom of the air intake pipe (47), the longitudinal connecting pipe (45) is detachably fixed to the bottom of the longitudinal butterfly valve (46), the two ends of the air pump (44) are respectively fixed to the ends of the transverse connecting pipe (43) and the longitudinal connecting pipe (45), and independent ball valves (48) are installed on the surfaces of the transverse connecting pipe (43) and the longitudinal connecting pipe (45).

2. The structure for replacing an air pump for a gas-insulated transformer without power outage according to claim 1, characterized in that: The surfaces corresponding to the transverse connecting pipe (43) and the transverse butterfly valve (42) are both provided with flanges, and the transverse connecting pipe (43) and the transverse butterfly valve (42) are fixed by studs.

3. The structure for replacing an air pump for a gas-insulated transformer without power outage according to claim 1, characterized in that: The corresponding surfaces of the longitudinal connecting pipe (45) and the longitudinal butterfly valve (46) are also provided with flanges, and the longitudinal connecting pipe (45) and the longitudinal butterfly valve (46) are fixed by studs.

4. The structure for replacing an air pump for a gas-insulated transformer without power outage according to claim 1, characterized in that: The surfaces of the transverse connecting pipe (43) and the longitudinal connecting pipe (45) are both provided with protective nets.

5. The structure for replacing an air pump for a gas-insulated transformer without power outage according to claim 1, characterized in that: A handle (5) is mounted on the surface of the longitudinal connecting tube (45).

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