Pressure sealing experiment device of intelligent oil-immersed transformer

Abstract

The utility model relates to the technical field of transformers, in particular to a pressure sealing experiment device of an intelligent oil-immersed transformer, which comprises an oil filling pipe, a second control valve, a cover plate, a pressure gauge and a connecting valve, one end of the oil filling pipe is provided with the connecting valve, and the top end of the connecting valve is provided with the pressure gauge; the oil injection pipe is fixedly connected with the second control valve, and the second control valve is arranged to control a pipeline switch; a cover plate is arranged on the side, away from the oil filling pipe, of the connecting valve, the cover plate is arranged to be a sealing pipe opening, a second control valve on the oil filling pipe can control on-off of oil filling, the connecting valve is connected with the oil filling pipe, then the connecting valve is connected with the cover plate, and the conservator structure is kept in a sealed state through the cover plate; the internal pressure change of the conservator structure is observed through display of the pressure gauge, the cover plate enables the conservator structure to keep a sealed state, then the sealing box is pressurized, and the internal pressure change of the conservator structure is observed through display of the pressure gauge.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to an intelligent pressure sealing experimental device for oil-immersed transformers. Background Art

[0002] Transformers are commonly used electrical equipment in power systems, used to change the voltage of electric energy. During the production and use of transformers, pressure sealing tests are required to ensure their safe and reliable operation.

[0003] An oil-immersed transformer is a transformer that uses oil as an insulating medium to insulate the coil. Its biggest feature is that the oil-immersed transformer uses insulating oil with high insulation performance and high insulation strength to insulate the transformer coil. Therefore, those skilled in the art provide an intelligent pressure sealing experimental device for oil-immersed transformers to solve the problems raised in the above background technology. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an intelligent oil-immersed transformer pressure sealing experimental device, comprising an oil filling pipe, a second control valve, a cover plate, a pressure gauge, and a connecting valve. A connecting valve is arranged at one end of the oil filling pipe, and a pressure gauge is arranged at the top of the connecting valve.

[0005] The oil filling pipe is fixedly connected to the second control valve, and the second control valve is configured to control the pipeline switch;

[0006] A cover plate is provided on the side of the connecting valve away from the oil filling pipe, and the cover plate is configured to seal the pipe mouth. The second control valve on the oil filling pipe can control the switch of the oil filling. The connecting valve is connected to the oil filling pipe, and then the connecting valve is connected to the cover plate. The oil pillow structure is kept in a sealed state through the cover plate, and then the sealing box is pressurized, and the pressure changes inside the oil pillow structure are observed through the display of the pressure gauge.

[0007] Preferably: the top end of the oil filling pipe is connected to an oil pillow structure, and the bottom end of the oil pillow structure away from one end of the oil filling pipe is connected to an exhaust pipe.

[0008] Preferably: a safety valve is provided at the bottom end of the exhaust pipe, and the exhaust pipe is threadedly connected to the safety valve.

[0009] Preferably: a cover plate is provided at the bottom end of the safety valve, and the cover plate is threadedly connected to the safety valve.

[0010] Preferably: one end of the oil pillow structure is connected to the transformer body, and the oil pillow structure is fixedly connected to the transformer body.

[0011] Preferably: the transformer body is placed inside the sealed box, a universal wheel is arranged at the bottom end of the sealed box, a first pipeline is arranged at one side of the sealed box, and a first control valve is arranged at the top end of the first pipeline.

[0012] Preferably: a pressure gauge is arranged at the top of the sealed box, and the pressure gauge is arranged to detect the pressure inside the sealed box.

[0013] Preferably, a second pipeline is arranged on a side of the sealing box away from the first pipeline, a first control valve is arranged at the top of the second pipeline, and the discharge of the internal pressure of the sealing box by the second pipeline is controlled by the first control valve.

[0014] Preferably: the sealing box is fixedly connected to the fixing buckle, one side of the fixing buckle is connected to the door, and a door handle is provided on the surface of the door.

[0015] Technical effects and advantages of the utility model:

[0016] The cover plate keeps the oil pillow structure sealed, and then pressurizes the sealing box. The pressure changes inside the oil pillow structure are observed through the display of the pressure gauge. If the pressure value of the pressure gauge does not change, it means that the transformer body is well sealed. Otherwise, the transformer body is leaking.

[0017] The main body of the transformer adopts an oil-immersed transformer. The oil-immersed transformer has better heat dissipation performance, which can effectively reduce the temperature inside the transformer and extend the service life of the transformer. A safety valve is set at the bottom of the exhaust pipe. The exhaust pipe is threadedly connected to the safety valve. The safety valve can relieve the pressure when the oil pillow structure leaks pressure to protect the safety of the transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an intelligent oil-immersed transformer pressure sealing experimental device provided in an embodiment of the present application;

[0019] Figure 2 It is a schematic diagram of the structure inside the sealing box of an intelligent oil-immersed transformer pressure sealing experimental device provided in an embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the structure of the transformer body in an intelligent oil-immersed transformer pressure sealing experimental device provided in an embodiment of the present application;

[0021] Figure 4 It is a structural schematic diagram of a pressure gauge and a safety valve in a pressure sealing experimental device for an intelligent oil-immersed transformer provided in an embodiment of the present application.

[0022] In the figure: 1. sealing box; 2. universal wheel; 3. door handle; 4. fixing buckle; 5. first pipeline; 6. first control valve; 7. pressure gauge; 8. second pipeline; 9. door; 10. transformer body; 11. oil pillow structure; 12. oil filling pipe; 13. second control valve; 14. cover plate; 15. pressure gauge; 16. exhaust pipe; 17. safety valve; 18. connecting valve. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0024] See also Figures 1 to 4 In this embodiment, an intelligent oil-immersed transformer pressure sealing experimental device is provided, including an oil filling pipe 12, a second control valve 13, a cover plate 14, a pressure gauge 15, and a connecting valve 18. The connecting valve 18 is provided at one end of the oil filling pipe 12, and the pressure gauge 15 is provided at the top of the connecting valve 18;

[0025] The oil filling pipe 12 is fixedly connected to the second control valve 13, and the second control valve 13 is configured to control the pipeline switch;

[0026] A cover plate 14 is provided on the side of the connecting valve 18 away from the oil filling pipe 12. The cover plate 14 is configured to seal the pipe mouth. The second control valve 13 on the oil filling pipe 12 can control the switch of the oil filling. The connecting valve 18 is connected to the oil filling pipe 12, and then the connecting valve 18 is connected to the cover plate 14. The oil pillow structure 11 is kept in a sealed state through the cover plate 14, and then the sealing box 1 is pressurized, and the internal pressure change of the oil pillow structure 11 is observed through the display of the pressure gauge 15.

[0027] The top end of the oil filling pipe 12 is connected to the oil pillow structure 11 , and the bottom end of the oil pillow structure 11 away from one end of the oil filling pipe 12 is connected to the exhaust pipe 16 .

[0028] A safety valve 17 is provided at the bottom end of the exhaust pipe 16 , and the exhaust pipe 16 is threadedly connected to the safety valve 17 . The safety valve 17 can release the pressure of the oil pillow structure 11 when pressure leakage occurs, thereby protecting the safety of the transformer body 10 .

[0029] A cover plate 14 is provided at the bottom end of the safety valve 17 , and the cover plate 14 is threadedly connected to the safety valve 17 . The cover plate 14 can seal the first control valve 6 and the exhaust pipe 16 . If the seal is not tight, the value of the pressure gauge 15 will be inaccurate.

[0030] One end of the oil pillow structure 11 is connected to the transformer body 10, and the oil pillow structure 11 is fixedly connected to the transformer body 10. The transformer body 10 adopts an oil-immersed transformer. The oil-immersed transformer is a transformer that insulates the coil by using oil as an insulating medium. Its biggest feature is that the oil-immersed transformer uses insulating oil with high insulation performance and high insulation strength to insulate the transformer coil.

[0031] The transformer body 10 is placed inside the sealed box 1 . A universal wheel 2 is provided at the bottom of the sealed box 1 . A first pipe 5 is provided on one side of the sealed box 1 . A first control valve 6 is provided at the top of the first pipe 5 .

[0032] A pressure gauge 7 is provided at the top of the sealed box 1 . The pressure gauge 7 is configured to detect the pressure inside the sealed box 1 . The pressure gauge 7 can detect the pressure value inside the sealed box 1 .

[0033] A second pipeline 8 is arranged on a side of the sealing box 1 away from the first pipeline 5 , and a first control valve 6 is arranged at the top end of the second pipeline 8 .

[0034] The sealing box 1 is fixedly connected to the fixing buckle 4 , one side of the fixing buckle 4 is connected to the door 9 , and a door handle 3 is provided on the surface of the door 9 .

[0035] The working principle of the utility model is as follows: a cover plate 14 is arranged on the side of the connecting valve 18 away from the oil filling pipe 12, the cover plate 14 is arranged to seal the pipe mouth, the second control valve 13 on the oil filling pipe 12 can control the switch of the oil filling, the connecting valve 18 is connected to the oil filling pipe 12, and then the connecting valve 18 is connected to the cover plate 14, the oil pillow structure 11 is kept in a sealed state through the cover plate 14, and then the sealing box 1 is pressurized, and the pressure change inside the oil pillow structure 11 is observed through the display of the pressure gauge 15; a pressure gauge 7 is arranged on the top of the sealing box 1, and the pressure gauge 7 is arranged to detect the pressure inside the sealing box 1 The pressure gauge 7 can detect the pressure value inside the sealed box 1. The transformer body 10 adopts an oil-immersed transformer. The oil-immersed transformer is a transformer that insulates the coil by using oil as an insulating medium. Its greatest feature is that the oil-immersed transformer uses insulating oil with high insulation performance and high insulation strength to insulate the coil of the transformer. A safety valve 17 is provided at the bottom end of the exhaust pipe 16. The exhaust pipe 16 is threadedly connected to the safety valve 17. The safety valve 17 can relieve the pressure of the oil pillow structure 11 when pressure leakage occurs, thereby protecting the safety of the transformer body 10.

[0036] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. An intelligent oil-immersed transformer pressure sealing test device, characterized in that: It comprises an oil filling pipe (12), a second control valve (13), a cover plate (14), a pressure gauge (15), and a connecting valve (18); one end of the oil filling pipe (12) is provided with a connecting valve (18), and the top end of the connecting valve (18) is provided with a pressure gauge (15); The oil injection pipe (12) is fixedly connected to a second control valve (13), and the second control valve (13) is configured to control the pipeline switch; A cover plate (14) is provided on the side of the connecting valve (18) away from the oil filling pipe (12), and the cover plate (14) is configured to seal the pipe opening.

2. According to claim 1, the intelligent oil-immersed transformer pressure sealing experimental device is characterized in that: The top end of the oil filling pipe (12) is connected to an oil pillow structure (11), and the bottom end of the oil pillow structure (11) away from one end of the oil filling pipe (12) is connected to an exhaust pipe (16).

3. The intelligent oil-immersed transformer pressure sealing experimental device according to claim 2 is characterized in that: A safety valve (17) is provided at the bottom end of the exhaust pipe (16), and the exhaust pipe (16) is threadedly connected to the safety valve (17).

4. The intelligent oil-immersed transformer pressure sealing experimental device according to claim 3 is characterized in that: A cover plate (14) is provided at the bottom end of the safety valve (17), and the cover plate (14) is threadedly connected to the safety valve (17).

5. The intelligent oil-immersed transformer pressure sealing experimental device according to claim 2 is characterized in that: One end of the oil pillow structure (11) is connected to the transformer body (10), and the oil pillow structure (11) is fixedly connected to the transformer body (10).

6. The intelligent oil-immersed transformer pressure sealing test device according to claim 5 is characterized in that: The transformer body (10) is placed inside a sealed box (1); a universal wheel (2) is provided at the bottom end of the sealed box (1); a first pipe (5) is provided on one side of the sealed box (1); and a first control valve (6) is provided at the top end of the first pipe (5).

7. The intelligent oil-immersed transformer pressure sealing test device according to claim 6 is characterized in that: A pressure gauge (7) is provided at the top of the sealed box (1), and the pressure gauge (7) is configured to detect the pressure inside the sealed box (1).

8. The intelligent oil-immersed transformer pressure sealing test device according to claim 7 is characterized in that: A second pipeline (8) is arranged on a side of the sealing box (1) away from the first pipeline (5), and a first control valve (6) is arranged at the top end of the second pipeline (8).

9. The intelligent oil-immersed transformer pressure sealing test device according to claim 8 is characterized in that: The sealing box (1) is fixedly connected to a fixing buckle (4), one side of the fixing buckle (4) is connected to a door (9), and a door handle (3) is provided on the surface of the door (9).

Images