Oil-immersed electromagnetic voltage transformer

Abstract

The utility model provides an oil immersed electromagnetic type voltage transformer which comprises a voltage transformer body, an oil storage barrel is arranged on one side of the voltage transformer body, the oil storage barrel is connected with the voltage transformer body through an oil outlet pipe, and the voltage transformer body comprises a transformer base. One side of the mutual inductor base is connected with an oil discharging pipe, the oil discharging pipe is communicated with one end of an oil outlet pipe, a ventilation box is arranged at the upper end of the oil storage barrel, the bottom of the ventilation box is fixedly connected with a connector base, the connector base is connected with an inlet of the oil storage barrel, and the interior of the ventilation box is of a hollow structure; a sealing oil hole is formed in the top of the ventilation box; the oil storage barrel is arranged and connected to the oil discharging pipe of the voltage transformer body, immersed oil in the voltage transformer can be discharged and collected through the oil storage barrel so that the immersed oil can be reused, waste can be reduced, and the transformer can be maintained more conveniently.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of voltage transformer, concretely is a kind of oil-immersed electromagnetic voltage transformer. BACKGROUND

[0002] Voltage transformer can be divided into according to working principle: electromagnetic voltage transformer, capacitive voltage transformer, electronic voltage transformer, electromagnetic voltage transformer is the equipment for proportionally transforming voltage or current using electromagnetic induction principle, electromagnetic voltage transformer is usually used in power system, for measuring voltage on high-voltage transmission line. They can also be used to monitor voltage waveform and amplitude in power system, so as to find fault and problem in power system in time, oil-immersed electromagnetic voltage transformer is a common power system measuring device, it improves insulation strength and withstands dirty performance by oil-immersed insulation structure, and it is suitable for outdoor and power system in harsh environment;

[0003] The structure of electromagnetic voltage transformer at present stage mainly includes core, primary winding, secondary winding and shell, and electromagnetic voltage transformer is usually divided into dry type and oil-immersed type, wherein oil-immersed electromagnetic voltage transformer usually adopts top-mounted oil-immersed tank, and the immersed oil is protected by expander in oil-immersed tank to avoid contacting external air, but this structure causes the following problems, first, matched tool is needed to discharge immersed oil during overhaul, so that the overhaul operation is inconvenient, and waste is generated after immersed oil is discharged.

[0004] Therefore, the utility model provides an oil-immersed electromagnetic voltage transformer to solve the above problems. Utility model content

[0005] To solve the above technical problems, the utility model provides an oil-immersed electromagnetic voltage transformer to solve the problems that matched tool is needed to discharge immersed oil during overhaul in prior art, so that the overhaul operation is inconvenient, and waste is generated after immersed oil is discharged.

[0006] The utility model provides an oil-immersed electromagnetic voltage transformer, including voltage transformer main part, one side of voltage transformer main part is provided with oil storage bucket, oil storage bucket and voltage transformer main part are connected through oil outlet pipe, voltage transformer main part includes mutual inductor base, one side of mutual inductor base is connected with oil discharge pipe, and one end of oil discharge pipe is communicated with oil outlet pipe, the upper end of oil storage bucket is provided with vent box, the bottom of vent box is fixedly connected with joint seat, and the joint seat is connected with the import of oil storage bucket, the inside of vent box is hollow structure, the top of vent box is provided with sealed oil hole, and one end of oil outlet pipe is inserted into oil storage bucket through penetrating sealed oil hole and being away from oil discharge pipe, one side of vent box is connected with gas valve cylinder, and the inside of gas valve cylinder is communicated with vent box, the side of gas valve cylinder is installed with inflation cylinder and is away from vent box, the inside of gas valve cylinder is provided with air inlet hole and air outlet hole, the air inlet valve is installed in air inlet hole, and the air outlet valve is installed in air outlet hole, and the air inlet hole is communicated with the inside of vent box.

[0007] Further, the top of the oil storage bucket is provided with a threaded communication pipe opening, the joint seat is sleeved on the surface of the threaded communication pipe opening and is connected through threads.

[0008] Further, the air inlet valve and the air outlet valve have the same structure, the air inlet valve comprises a sealing valve block and a movable valve plate, the sealing valve block is arranged in the gas valve cylinder and is in contact with the hole of the air inlet hole, and the sealing valve block and the movable valve plate are fixedly connected through a valve rod.

[0009] Further, the valve rod penetrates the air inlet hole and is fixedly connected with the movable valve plate, the movable valve plate is connected with the inner wall of the vent box through a tension spring, and a plurality of air permeable holes are formed in the movable valve plate.

[0010] Further, the air outlet hole is arranged at the top of the gas valve cylinder and is communicated with the inside of the gas valve cylinder.

[0011] Further, the joint seat and the vent box are an integral structure, and an opening is formed in the bottom of the joint seat.

[0012] Further, one end of the inflation cylinder is communicated with the inside of the gas valve cylinder, and a piston push rod is arranged in the inflation cylinder.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The oil storage bucket is connected to the oil discharge pipe of the voltage transformer main body, which can discharge the immersion oil in the voltage transformer, collect the immersion oil for reuse, reduce waste, and facilitate maintenance of the mutual inductor.

[0015] 2, the utility model discloses a suction cylinder is set to the oil storage bucket is in the suction, utilizes the principle of negative pressure, and the oil immersion in mutual inductor is extracted, and the oil is extracted from the bottom of voltage mutual inductor, when extracting the oil, it is more thorough, and the back-and-forth movable suction cylinder can extract the oil in the oil storage bucket multiple times.

[0016] 3, the utility model discloses the air inlet valve and air outlet valve are set up, control the gas circulation direction in air valve cylinder, and then realize the suction cylinder multiple times to the oil storage bucket suction. DRAWINGS

[0017] Figure 1 it is the utility model three-dimensional view;

[0018] Figure 2 it is the utility model oil storage bucket three-dimensional view;

[0019] Figure 3 it is the utility model vent box inside three-dimensional view;

[0020] Figure 4 it is the utility model split diagram.

[0021] In the drawing:

[0022] 1, voltage mutual inductor main part;2, mutual inductor base;3, oil outlet pipe;4, vent box;5, air valve cylinder;6, suction cylinder;7, air inlet valve;701, sealing valve block;702, movable valve plate;703, tension spring;8, joint base;9, oil storage bucket;10, air outlet valve;11, air outlet hole;12, air inlet hole. SPECIFIC IMPLEMENTATION

[0023] The embodiment of the utility model is further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but can not be used to limit the scope of the utility model.

[0024] As Figures 1-4As shown in the utility model provides a kind of oil-immersed electromagnetic voltage transformer, including voltage transformer main body 1, the side of voltage transformer main body 1 is provided with oil storage bucket 9, oil storage bucket 9 is connected between voltage transformer main body 1 by oil outlet pipe 3, voltage transformer main body 1 includes mutual inductor base 2, the side of mutual inductor base 2 is connected with oil discharge pipe, and the one end of oil discharge pipe and oil outlet pipe 3 is communicated, and the upper end of oil storage bucket 9 is provided with vent box 4, and the bottom of vent box 4 is fixedly connected with connector seat 8, and connector seat 8 is connected at the import of oil storage bucket 9, and the inside of vent box 4 is hollow structure, and the top of vent box 4 is provided with sealed oil hole, and the one end of oil outlet pipe 3 is inserted into oil storage bucket 9 by penetrating sealed oil hole, and the side of vent box 4 is connected with gas valve cylinder 5, and the inside of gas valve cylinder 5 is communicated with vent box 4, and the side of gas valve cylinder 5 is installed with suction cylinder 6 away from vent box 4, and the inside of gas valve cylinder 5 is provided with inlet hole 12 and outlet hole 11, and inlet valve 7 is installed in inlet hole 12, and outlet valve 10 is installed in outlet hole 11, and inlet hole 12 is communicated with the inside of vent box 4.

[0025] As an embodiment of the utility model, the top of oil storage bucket 9 is provided with threaded communication pipe orifice, and connector seat 8 is sleeved on the surface of threaded communication pipe orifice and is connected by thread.

[0026] As an embodiment of the utility model, inlet valve 7 and outlet valve 10 are the same structure, inlet valve 7 includes sealing valve block 701 and movable valve plate 702, sealing valve block 701 is arranged in gas valve cylinder 5 and is in contact with the orifice of inlet hole 12, and sealing valve block 701 and movable valve plate 702 are fixedly connected by valve rod.

[0027] As an embodiment of the utility model, valve rod penetrates inlet hole 12 and is fixedly connected with movable valve plate 702, movable valve plate 702 is connected between the inner wall of vent box 4 by tension spring 703, and a plurality of air holes are formed in movable valve plate 702.

[0028] As an embodiment of the utility model, outlet hole 11 is arranged at the top of gas valve cylinder 5, and outlet hole 11 is communicated with the inside of gas valve cylinder 5.

[0029] As an embodiment of the utility model, connector seat 8 and vent box 4 are integrated structure, and the bottom of connector seat 8 is provided with opening.

[0030] As an embodiment of the utility model, one end of suction cylinder 6 is communicated with the inside of gas valve cylinder 5, and piston push rod is arranged in suction cylinder 6.

[0031] Specific working principle:

[0032] Before pumping, oil outlet pipe 3 is connected on mutual inductor base 2, and one end of oil outlet pipe 3 is inserted into oil storage bucket 9;

[0033] By the back and forth movement of the piston rod, the air suction cylinder 6 is controlled to suck air, when moving to the left, the air inlet valve 7 is opened, and the air outlet valve 10 is closed, so that the air in the oil storage bucket 9 can be sucked out, when moving to the right, the air inlet valve 7 is closed, and the air outlet valve 10 is opened, so that the air is discharged from the air outlet hole 11, and the above process is repeated to suck air in the oil storage bucket 9;

[0034] When the air inlet valve 7 and the air outlet valve 10 are controlled, the sealing valve block 701 is in contact with the inner wall of the air valve cylinder 5, and the air hole is closed, and if the sealing valve block 701 is away from the air hole, it is opened.

[0035] By setting the oil storage bucket 9 connected to the oil discharge pipe of the voltage transformer main body 1, the immersed oil in the voltage transformer can be discharged, and the immersed oil is collected by the oil storage bucket 9, so as to be used again, reduce waste, and also be more convenient during maintenance of the transformer.

[0036] The embodiments of the utility model are given for example and description, although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. An oil-immersed electromagnetic voltage transformer, comprising a voltage transformer body (1), one side of the voltage transformer body (1) is provided with an oil storage bucket (9), the oil storage bucket (9) and the voltage transformer body (1) are connected through an oil outlet pipe (3), characterized in that: The voltage transformer body (1) includes a transformer base (2), one side of the transformer base (2) is connected with a oil discharge pipe, the oil discharge pipe is communicated with one end of an oil outlet pipe (3), the upper end of the oil storage bucket (9) is provided with a vent box (4), the bottom of the vent box (4) is fixedly connected with a connector seat (8), the connector seat (8) is connected with the inlet of the oil storage bucket (9), the inside of the vent box (4) is a hollow structure, the top of the vent box (4) is provided with a sealed oil hole, the end of the oil outlet pipe (3) away from the oil discharge pipe is inserted into the oil storage bucket (9) by penetrating the sealed oil hole, one side of the vent box (4) is connected with a gas valve cylinder (5), the inside of the gas valve cylinder (5) is communicated with the inside of the vent box (4), the side of the gas valve cylinder (5) away from the vent box (4) is provided with a suction cylinder (6), the gas valve cylinder (5) is provided with an air inlet hole (12) and an air outlet hole (11), the air inlet hole (12) is provided with an air inlet valve (7), the air outlet hole (11) is provided with an air outlet valve (10), the air inlet hole (12) is communicated with the inside of the vent box (4).

2. The oil-immersed electromagnetic voltage transformer according to claim 1, characterized in that: The top of the oil storage bucket (9) is provided with a threaded communication pipe opening, the connector seat (8) is sleeved on the surface of the threaded communication pipe opening and is connected through threads.

3. The oil immersed electromagnetic voltage transformer as claimed in claim 1, wherein: The air inlet valve (7) and the air outlet valve (10) are the same structure, the air inlet valve (7) includes a sealing valve block (701) and a movable valve plate (702), the sealing valve block (701) is arranged in the gas valve cylinder (5) and is in contact with the hole of the air inlet hole (12), the sealing valve block (701) and the movable valve plate (702) are fixedly connected through a valve rod.

4. The oil immersed electromagnetic voltage transformer according to claim 3, characterized in that: The valve rod penetrates the air inlet hole (12) and is fixedly connected with the movable valve plate (702), the movable valve plate (702) is connected with the inner wall of the vent box (4) through a tension spring (703), a plurality of air holes are formed in the movable valve plate (702).

5. The oil immersed electromagnetic voltage transformer as claimed in claim 1, wherein: The air outlet hole (11) is arranged at the top of the gas valve cylinder (5), and the air outlet hole (11) is communicated with the inside of the gas valve cylinder (5).

6. The oil immersed electromagnetic voltage transformer as claimed in claim 1, wherein: The connector seat (8) and the vent box (4) are an integral structure, and the bottom of the connector seat (8) is provided with an opening.

7. The oil immersed electromagnetic voltage transformer as claimed in claim 1, wherein: One end of the suction cylinder (6) is communicated with the inside of the gas valve cylinder (5), and a piston push rod is arranged in the suction cylinder (6).

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