Transformer with transformer oil convenient to replace

Abstract

The utility model provides a transformer convenient to replace transformer oil, which comprises a transformer body, a transformer old oil tank is arranged on the side edge of the transformer body, a new oil replacement tank is arranged above the transformer old oil tank, and old transformer oil in the old oil tank is discharged by opening an old oil discharge pipe valve. And after the old transformer oil is discharged, the old oil discharge pipe valve is closed. When the oil change control oil valve is opened, the oil change control oil valve can be driven to move backwards through pulling, the oil change control oil valve can be driven to move backwards through backward movement, a channel between the oil valve oil inlet connecting pipe and the oil change control oil valve is opened, and new transformer oil in a new oil tank flows into an old oil tank of the transformer through an oil conveying pipe to achieve oil change. After new transformer oil flows into the old oil tank of the transformer, the oil change control oil valve is closed, the transformer oil is conveniently replaced, the oil tank does not need to be disassembled, and therefore the efficiency and safety of the replacement process are greatly improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of transformers, and more specifically, to a transformer facilitating the replacement of transformer oil. Background Art

[0002] A transformer is a common electrical device in the power system for changing the magnitude of voltage. The transformer oil tank, as the outer shell of the transformer, is an important component of the transformer, playing roles in protecting the transformer, cooling the transformer, and providing insulation. However, during long-term operation of the transformer, the transformer oil gradually loses its original performance due to reasons such as aging and pollution, such as a decrease in insulation performance and a change in dielectric constant, thus affecting the normal operation of the transformer. Therefore, regularly replacing the transformer oil is an important measure to ensure the stable operation of the transformer.

[0003] A transformer oil tank proposed in the Chinese utility model patent application No. CN202323118209.1 includes a tank body and a number of heat dissipation corrugated sheets. The number of the heat dissipation corrugated sheets is distributed into two groups of heat dissipation corrugated sheet groups. The two groups of heat dissipation corrugated sheet groups respectively correspond to the opposite side walls of the tank body. An installation plate is provided on one side of each group of heat dissipation corrugated sheet groups. A number of sliding holes for each group of heat dissipation corrugated sheet groups to pass through are provided on the two side walls of the tank body corresponding to the heat dissipation corrugated sheet groups. Each installation plate is located inside the tank body, and a quick-installation fixing component and a sealing component are provided between each installation plate and the side wall of the tank body.

[0004] Existing methods for replacing transformer oil have many inconveniences. First, due to the high sealing requirements of the transformer oil tank, replacing the transformer oil requires removing the cover plate of the oil tank or performing complex sealing operations, which not only increases the complexity and time cost of the replacement process but also may cause safety problems due to improper operation. Second, during the disassembly process, the transformer oil is prone to leakage, which not only causes waste of resources but also may pollute the environment. In addition, the disassembly process may also damage other components of the transformer, further increasing the maintenance cost. Therefore, we make improvements and propose a transformer facilitating the replacement of transformer oil. Summary of the Utility Model

[0005] The object of the present utility model is to address the problems raised in the background art currently existing. To achieve the above object of the utility model, the present utility model provides the following technical solutions: A transformer facilitating the replacement of transformer oil, comprising a transformer body, a used transformer oil tank is arranged on the side of the transformer body, a new oil tank for oil replacement is arranged above the used transformer oil tank, the new oil tank for oil replacement and the used transformer oil tank are connected through an oil transfer pipeline for oil replacement, an oil control valve for oil replacement is arranged on the oil transfer pipeline for oil replacement, an oil valve spool is arranged inside the oil control valve for oil replacement, an old oil drain pipe is arranged on the used transformer oil tank, a valve core piston is arranged inside the oil valve spool, a piston pull rod is arranged on the valve core piston, and a return spring is sleeved on the outer surface of the piston pull rod.

[0006] As a preferred technical solution of the present application, an oil valve inlet connection pipe and an oil valve outlet connection pipe are arranged on the oil control valve for oil replacement.

[0007] As a preferred technical solution of the present application, the oil valve inlet connection pipe and the oil valve outlet connection pipe are in an L shape.

[0008] As a preferred technical solution of the present application, an old oil drain pipe valve is arranged on the old oil drain pipe, and a sealing rubber layer is arranged on the outer surface of the old oil drain pipe valve.

[0009] As a preferred technical solution of the present application, the piston pull rod and a connecting rod are connected through a connecting rod pin shaft, and the other end of the connecting rod is connected to a switch wrench through a connecting rod pin shaft.

[0010] As a preferred technical solution of the present application, the switch wrench is movably connected to an L-shaped wrench holder.

[0011] As a preferred technical solution of the present application, the L-shaped wrench holder is connected to the oil control valve for oil replacement.

[0012] As a preferred technical solution of the present application, the oil valve spool is arranged inside the old oil drain pipe valve and the oil control valve for oil replacement.

[0013] As a preferred technical solution of the present application, an insulator is arranged on the transformer body.

[0014] As a preferred technical solution of the present application, two transformer fixing frames are arranged below the transformer body, and the two transformer fixing frames are parallel to each other.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] In the solution of this application: By opening the old oil drain pipe valve, the old transformer oil in the old oil tank is drained. After draining the old transformer oil, the old oil drain pipe valve is closed. The oil change control oil valve is opened. By pulling, it will drive the movement backward. Through the backward movement, it drives the backward movement, and through the backward movement, it drives the backward movement, thus opening the channel between the oil valve inlet connecting pipe and, and then the new transformer oil in the new oil tank flows into the old transformer oil tank through the oil delivery pipe to realize the oil change. After the new transformer oil flows into the old transformer oil tank of the transformer, the oil change control oil valve is closed, realizing the convenient replacement of the transformer oil without disassembling the oil tank, thereby greatly improving the efficiency and safety of the replacement process, reducing the maintenance cost, solving the problem of inconvenient replacement of transformer oil in the prior art, improving the efficiency and safety of the replacement process, reducing the maintenance cost, and having important practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram provided by this application;

[0018] Figure 2 is a schematic structural diagram of the transformer body provided by this application;

[0019] Figure 3 is a schematic structural diagram of the oil change control oil valve provided by this application;

[0020] Figure 4 is a schematic cross-sectional view of the oil valve spool provided by this application;

[0021] Figure 5 is a schematic structural diagram of the spool piston provided by this application;

[0022] Figure 6 is a schematic rear view provided by this application.

[0023] Reference numerals in the figures:

[0024] 1. Transformer body; 101. Transformer fixing frame; 2. Old transformer oil tank; 201. Old oil drain pipe; 202. Old oil drain pipe valve; 3. New oil tank for oil change; 4. Oil delivery pipe for oil change; 5. Oil change control oil valve; 501. Oil valve inlet connecting pipe; 502. Oil valve outlet connecting pipe; 6. Oil valve spool; 601. Spool piston; 602. Piston pull rod; 603. Return spring; 7. Pull rod link; 8. Link pin shaft; 9. Switch wrench; 901. L-shaped wrench holder; 10. Insulator; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are a specific implementation manner of the present utility model and are not limited to all embodiments.

[0026] Accordingly, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the claimed present utility model, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0027] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] Embodiment: Please refer to Figures 1-6 , a transformer facilitating replacement of transformer oil, comprising a transformer body 1. A used transformer oil tank 2 is arranged on the side of the transformer body 1. A new oil tank 3 for oil replacement is arranged above the used transformer oil tank 2. The new oil tank 3 for oil replacement is connected to the used transformer oil tank 2 through an oil replacement pipeline 4. An oil replacement control valve 5 is arranged on the oil replacement pipeline 4. An oil valve spool 6 is arranged inside the oil replacement control valve 5. An old oil drain pipe 201 is arranged on the used transformer oil tank 2. An old oil drain valve 202 is arranged on the old oil drain pipe 201. An oil valve inlet connection pipe 501 and an oil valve outlet connection pipe 502 are arranged on the oil replacement control valve 5. The oil valve inlet connection pipe 501 and the oil valve outlet connection pipe 502 are in an L shape. A spool piston 601 is arranged inside the oil valve spool 6. A piston pull rod 602 is arranged on the spool piston 601. A return spring 603 is sleeved on the outer surface of the piston pull rod 602. The piston pull rod 602 is connected to a pull rod link 7 through a connecting link pin shaft 8. The other end of the pull rod link 7 is connected to a switch wrench 9 through a link pin shaft 8. The switch wrench 9 is movably connected to an L-shaped wrench holder 901. The L-shaped wrench holder 901 is connected to the oil replacement control valve 5. The oil valve spool 6 is arranged inside the old oil drain valve 202 and the oil replacement control valve 5. An insulator 10 is arranged on the transformer body 1.

[0029] A used transformer oil tank 2 is arranged on the side of the transformer body 1 for storing the used transformer oil to be replaced. A new oil tank 3 for oil replacement is arranged above the used transformer oil tank 2 for storing new transformer oil.

[0030] The new oil tank 3 for oil change and the old oil tank 2 of the transformer are connected through the oil change pipeline 4 to realize the circulation of the new and old transformer oils. An oil change control valve 5 is arranged on the oil change pipeline 4 to control the switching of the new and old transformer oils. An old oil drain pipe 201 is arranged on the old oil tank 2 of the transformer to drain the old transformer oil. An old oil drain pipe valve 202 is arranged on the old oil drain pipe 201 to control the discharge of the old transformer oil.

[0031] An oil valve inlet connecting pipe 501 and an oil valve outlet connecting pipe 502 are arranged on the oil change control valve 5 to connect the new and old oil tanks and the transformer body 1. The oil valve inlet connecting pipe 501 and the oil valve outlet connecting pipe 502 are in an L shape, which is convenient for installation and maintenance. A valve core piston 601 is arranged inside the oil valve core 6 to control the circulation of the new and old transformer oils. A piston pull rod 602 is arranged on the valve core piston 601 to operate the valve core piston 601. A return spring 603 is sleeved on the outer surface of the piston pull rod 602 to keep the valve core piston 601 reset after opening and closing. The piston pull rod 602 and the pull rod connecting rod 7 are connected through a connecting rod pin shaft 8 to realize the operation of the valve core piston 601. The other end of the pull rod connecting rod 7 is connected to the switch wrench 9 through a connecting rod pin shaft 8 to realize the opening and closing control of the valve core piston 601. The switch wrench 9 is movably connected to the L-shaped wrench holder 901 for convenient operation. The L-shaped wrench holder 901 is connected to the oil change control valve 5 to realize the operation of the oil change control valve 5. An insulator 10 is arranged on the transformer body 1 to ensure safety.

[0032] The working principle of the utility model: The transformer realizes the replacement of the transformer oil by arranging an old oil tank, a new oil tank and an oil pipeline. The old oil tank is used to store the old transformer oil to be replaced, and the new oil tank is used to store the new transformer oil. By controlling the oil change control valve 5, the switching of the new and old transformer oils can be realized. When the transformer oil needs to be replaced, the old oil drain pipe valve 202 is opened to drain the old transformer oil in the old oil tank, and then the old oil drain pipe valve 202 is closed, and the oil change control valve 5 is opened. The new transformer oil in the new oil tank flows into the transformer body 1 through the oil pipeline to realize the replacement of the transformer oil.

[0033] When the transformer oil needs to be replaced, first open the old oil drain pipe valve 202 to drain the old transformer oil in the old oil tank. After draining the old transformer oil, close the old oil drain pipe valve 202.

[0034] Open the oil change control valve 5. By pulling 9, it will drive 7 to move backward. By the backward movement of 7, it will drive 602 to move backward. By the backward movement of 602, it will drive 601 to move backward, thereby opening the channel between the oil inlet connecting pipes 501 and 502 of the oil valve, and then flowing the new transformer oil in the new oil tank into the old transformer oil tank 2 through the oil pipeline to achieve oil change. After the new transformer oil flows into the old transformer oil tank 2, close the oil change control valve 5 to complete the replacement of the transformer oil.

[0035] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the present invention are covered by the scope of the claims of the present invention.

Claims

1. A transformer facilitating the replacement of transformer oil, comprising a transformer body (1), wherein an old transformer oil tank (2) is arranged on the side of the transformer body (1), and it is characterized in that, Above the old oil tank (2) of the transformer, a new oil tank (3) for oil change is provided. The new oil tank (3) for oil change is connected to the old oil tank (2) of the transformer through an oil transfer pipeline (4) for oil change. An oil change control valve (5) is provided on the oil transfer pipeline (4) for oil change. An oil valve spool (6) is provided inside the oil change control valve (5). An old oil drain pipe (201) is provided on the old oil tank (2) of the transformer. A spool piston (601) is provided inside the oil valve spool (6). A piston pull rod (602) is provided on the spool piston (601). A return spring (603) is sleeved on the outer surface of the piston pull rod (602).

2. A transformer facilitating replacement of transformer oil according to claim 1, characterized in that, An oil valve inlet connection pipe (501) and an oil valve outlet connection pipe (502) are provided on the oil change control valve (5).

3. The transformer for facilitating replacement of transformer oil according to claim 2, wherein, The oil valve inlet connection pipe (501) and the oil valve outlet connection pipe (502) are in an L shape.

4. A transformer facilitating replacement of transformer oil according to claim 1, wherein, An old oil drain pipe valve (202) is provided on the old oil drain pipe (201). A sealing rubber layer is provided on the outer surface of the old oil drain pipe valve (202).

5. A transformer facilitating replacement of transformer oil according to claim 1, wherein, The piston pull rod (602) is connected to a pull rod link (7) through a connecting link pin shaft (8). The other end of the pull rod link (7) is connected to a switch wrench (9) through a link pin shaft (8).

6. A transformer facilitating replacement of transformer oil according to claim 5, wherein The switch wrench (9) is movably connected to an L-shaped wrench holder (901).

7. A transformer facilitating replacement of transformer oil according to claim 6, characterized in that, The L-shaped wrench holder (901) is connected to the oil change control valve (5).

8. A transformer facilitating replacement of transformer oil according to claim 4, characterized in that, The oil valve spool (6) is provided inside the old oil drain pipe valve (202) and the oil change control valve (5).

9. A transformer facilitating the replacement of transformer oil according to claim 1, wherein, An insulator (10) is provided on the transformer body (1).

10. A transformer facilitating replacement of transformer oil according to claim 1, wherein, Two transformer fixing brackets (101) are provided below the transformer body (1), and the two transformer fixing brackets (101) are parallel to each other.

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