Electromagnetic valve type transformer nitrogen injection fire extinguishing device

Abstract

The utility model discloses an electromagnetic valve type transformer nitrogen injection fire extinguishing device, and relates to the technical field of power transformer fire fighting, the electromagnetic valve type transformer nitrogen injection fire extinguishing device comprises a supporting assembly, and the supporting assembly comprises a fixing box, a nitrogen storage tank and an oil conveying pipe; the device further comprises a nitrogen injection assembly. The nitrogen injection assembly comprises a connecting pipe, a nitrogen storage tank control valve, a storage tank, an oil liquid control valve, a driver, a gas transmission control valve and an oil liquid driving pump; the nitrogen storage tank control valve is rotationally connected to an outlet of the nitrogen storage tank, and the connecting pipe is used for conveying nitrogen into the transformer; the storage box is fixed at the bottom of the fixed box; the top of the storage box is connected with the driver through a conveying pipe; the oil liquid driving pump is fixed in the storage box and is used for conveying oil liquid into the oil conveying pipe; the gas driving pump is communicated with the connecting pipe, and a gas transmission control valve is connected between the driver and the connecting pipe; the oil control valve is fixed on the oil conveying pipe; and the speed of discharging transformer oil from the transformer can be increased, so that nitrogen can enter the transformer more quickly to cool the transformer.

Description

Technical Field

[0001] The utility model relates to the technical field of power transformer fire protection, in particular to a solenoid valve type transformer nitrogen injection fire extinguishing device. Background Art

[0002] Most oil-immersed transformer fire extinguishing systems are operated by draining oil and injecting nitrogen. That is, when the transformer encounters an insulation failure or other failure, causing the transformer oil temperature to rise sharply, and when there is an imminent danger of explosion or fire, the oil drain mechanism is immediately started to drain the oil and release the pressure. Then, the nitrogen injection system is started to continuously inject sufficient nitrogen into the transformer to reduce the internal temperature of the transformer.

[0003] When a transformer fails, the transformer oil temperature will rise rapidly. When the temperature reaches a certain range, the transformer oil may catch fire and cause a fire. The existing transformer oil nitrogen injection fire extinguishing device cannot quickly discharge the transformer oil from the transformer and allow nitrogen to enter the transformer to cool the transformer. During the period from the start of the transformer nitrogen injection system to the nitrogen entering the transformer, the internal temperature of the transformer may have risen rapidly and caused damage to the transformer. Utility Model Content

[0004] The embodiment of the present application provides a solenoid valve type transformer nitrogen injection fire extinguishing device, which solves the problem in the prior art that when a transformer fails, the transformer oil temperature will rise rapidly, and the existing transformer oil nitrogen injection fire extinguishing device cannot quickly discharge the transformer oil from the transformer and allow nitrogen to enter the transformer to cool the transformer. The embodiment of the present application can increase the speed of transformer oil discharge from the transformer, allow nitrogen to enter the transformer faster to cool the transformer, and ensure that the transformer will not be damaged due to excessive temperature.

[0005] The embodiment of the present application provides a solenoid valve type transformer nitrogen injection fire extinguishing device, including a support assembly, the support assembly including a fixed box, a nitrogen storage tank and an oil pipeline;

[0006] Also included is a nitrogen injection assembly;

[0007] The nitrogen injection assembly includes a connecting pipe, a nitrogen storage tank control valve, a storage box, an oil control valve, a driver, a gas transmission control valve and an oil drive pump;

[0008] The nitrogen storage tank control valve is rotatably connected to the outlet of the nitrogen storage tank, and the connecting pipe is used to transport nitrogen into the transformer;

[0009] The storage box is fixed to the bottom of the fixed box, and the top of the storage box is connected to the driver through a conveying pipe;

[0010] A gas transmission control valve is connected between the driver and the connecting pipe;

[0011] The oil-driven pump is fixed in the storage tank, and the oil-driven pump is used to transport the oil into the oil pipeline;

[0012] The oil control valve is fixed on the oil delivery pipe.

[0013] Furthermore, the nitrogen injection assembly also includes a one-way valve;

[0014] The one-way valve is rotatably connected to the delivery pipe between the storage box and the oil delivery pipe. The one-way valve is used to control the flow direction of the transformer oil in the oil delivery pipe to prevent the transformer oil in the oil delivery pipe from flowing into the storage box.

[0015] Further, the nitrogen injection assembly also includes a gas driven pump;

[0016] The gas driven pump is in communication with the connecting pipe;

[0017] The gas driven pump is fixed in the driver, the gas driven pump is driven by a motor, and a plurality of fan blades are fixed on the rotating shaft of the gas driven pump;

[0018] The gas driven pump can suck the oil and gas inside the transformer into the storage box;

[0019] The gas driven pump delivers the gas sucked out from the transformer into the connecting pipe, so that the nitrogen in the connecting pipe flows faster, thereby increasing the speed at which the nitrogen enters the transformer.

[0020] Furthermore, the oil-driven pump delivers the transformer oil sucked out of the transformer to the oil delivery pipe through the delivery pipe, thereby increasing the oil discharge speed of the transformer, allowing nitrogen to enter the transformer faster to cool the transformer;

[0021] The oil-driven pump is located near the bottom of the storage box, and the storage box inlet hole is located higher than the oil-driven pump.

[0022] Further, the nitrogen storage tank is vertically fixed in a fixed box;

[0023] The oil delivery pipe passes through the fixed box, one end of the oil delivery pipe is connected to the inside of the transformer, and the other end is connected to the oil storage tank outside the transformer.

[0024] Furthermore, the storage box is connected to the inside of the transformer through a delivery pipe and is controlled by a control valve, so that the transformer oil inside the transformer can be delivered to the storage box;

[0025] The storage box is used for storing gas and transformer oil transported from inside the transformer.

[0026] Furthermore, the gas delivery control valve is an electromagnetic one-way valve, and the gas delivery control valve can prevent the nitrogen in the nitrogen storage tank from flowing into the storage box;

[0027] The nitrogen storage tank control valve is an electromagnetic control valve, which is used to control the outflow of nitrogen in the nitrogen storage tank. When the temperature in the transformer rises, the nitrogen storage tank control valve opens to allow the nitrogen in the nitrogen storage tank to enter the transformer.

[0028] Further, the driver is a hollow cylinder with openings at both ends, and the gas driven pump is fixed on the side wall inside the driver;

[0029] The gas driven pump drives the gas to flow from bottom to top, thereby increasing the flow speed of the nitrogen entering the connecting pipe, so that the nitrogen can enter the transformer more quickly.

[0030] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0031] When the internal temperature of the transformer rises rapidly, the control valve of the nitrogen storage tank opens to allow the nitrogen in the nitrogen storage tank to enter the transformer through the connecting pipe. At the same time, the oil pipeline discharges the transformer oil in the transformer, and the gas-driven pump starts to operate to suck out the transformer oil in the transformer and transport it to the oil pipeline. At the same time, the gas-driven pump drives the gas to enter the connecting pipe to speed up the flow rate of the nitrogen, which effectively solves the problem in the prior art that when the internal temperature of the transformer rises rapidly, the nitrogen cannot enter the transformer in time to cool the transformer, thereby achieving the ability to increase the oil discharge speed of the transformer when the transformer heats up rapidly, so that the nitrogen can enter the transformer faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the overall structure of a solenoid valve type transformer nitrogen injection fire extinguishing device of the utility model;

[0033] Figure 2 This is a schematic diagram of the internal structure of a storage box of a solenoid valve type transformer nitrogen injection fire extinguishing device of the utility model;

[0034] Figure 3 This is a schematic diagram of the connection relationship between a storage box and a driver of a solenoid valve type transformer nitrogen injection fire extinguishing device of the utility model;

[0035] Figure 4 The utility model is a schematic diagram of the internal structure of a driver of a solenoid valve type transformer nitrogen injection fire extinguishing device.

[0036] In the figure: 10, support assembly; 11, fixed box; 12, nitrogen storage tank; 13, oil pipeline;

[0037] 20. Nitrogen injection assembly; 21. Connecting pipe; 22. Nitrogen storage tank control valve; 23. Storage box; 24. Check valve; 25. Oil control valve; 26. Driver; 27. Gas control valve; 28. Oil drive pump; 29. ​​Gas drive pump. DETAILED DESCRIPTION

[0038] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0039] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention are only for the purpose of describing specific implementation methods and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0041] like Figures 1 to 4 As shown, the present application proposes a solenoid valve type transformer nitrogen injection fire extinguishing device, including a support assembly 10, the support assembly 10 includes a fixed box 11, a nitrogen storage tank 12 and an oil pipeline 13; and also includes a nitrogen injection assembly 20;

[0042] The nitrogen injection assembly 20 includes a connecting pipe 21, a nitrogen storage tank control valve 22, a storage box 23, an oil control valve 25, a driver 26, a gas control valve 27 and an oil drive pump 28; the nitrogen storage tank control valve 22 is rotatably connected to the outlet of the nitrogen storage tank 12, and the connecting pipe 21 is used to transport nitrogen into the transformer; the storage box 23 is fixed at the bottom of the fixed box 11, and the top of the storage box 23 is connected to the driver 26 through a delivery pipe; the oil drive pump 28 is fixed in the storage box 23, and the oil drive pump 28 is used to transport oil to the oil pipeline 13, and a gas control valve 27 is connected between the driver 26 and the connecting pipe 21; the oil control valve 25 is fixed on the oil pipeline 13.

[0043] Preferably, the nitrogen injection assembly 20 further includes a one-way valve 24;

[0044] The one-way valve 24 is rotatably connected to the delivery pipe between the storage box 23 and the oil delivery pipe 13 . The one-way valve 24 is used to control the flow direction of the transformer oil in the oil delivery pipe 13 to prevent the transformer oil in the oil delivery pipe 13 from flowing into the storage box 23 .

[0045] Preferably, the nitrogen injection assembly 20 further includes a gas driven pump 29;

[0046] The gas driven pump 29 is connected to the connecting pipe 21; the gas driven pump 29 is fixed in the driver 26, the gas driven pump 29 is driven by a motor, and a plurality of fan blades are fixed on the rotating shaft of the gas driven pump 29;

[0047] The gas driven pump 29 can suck the oil and gas inside the transformer into the storage tank 23;

[0048] The gas driven pump 29 delivers the gas sucked out from the transformer into the connecting pipe 21, so as to accelerate the flow of nitrogen in the connecting pipe 21, thereby increasing the speed at which the nitrogen enters the transformer.

[0049] Preferably, the oil-driven pump 28 delivers the transformer oil sucked out of the transformer to the oil delivery pipe 13 through the delivery pipe, thereby increasing the oil discharge speed of the transformer, allowing nitrogen to enter the transformer faster to cool the transformer;

[0050] The oil-driven pump 28 is located near the bottom of the storage box 23 , and the inlet hole of the storage box 23 is located higher than the oil-driven pump 28 .

[0051] Preferably, the nitrogen storage tank 12 is vertically fixed in the fixed box 11;

[0052] The oil delivery pipe 13 passes through the fixed box 11 , one end of the oil delivery pipe 13 is connected to the inside of the transformer, and the other end is connected to the oil storage tank outside the transformer.

[0053] Preferably, the storage box 23 is connected to the inside of the transformer through a delivery pipe and is controlled by a control valve. Under the action of the driver 26, the transformer oil inside the transformer can be delivered to the storage box 23, thereby improving the discharge efficiency of the transformer oil.

[0054] The storage box 23 is used to store the gas and transformer oil transported from inside the transformer.

[0055] Preferably, the gas delivery control valve 27 is an electromagnetic one-way valve 24, and the gas delivery control valve 27 can prevent the nitrogen in the nitrogen storage tank 12 from flowing into the storage box 23. When the nitrogen storage tank control valve 22 is opened, the gas delivery control valve 27 can be opened at the same time, and the driver 26 is started, and the driver 26 pushes the nitrogen into the transformer;

[0056] The nitrogen storage tank control valve 22 is an electromagnetic control valve, which is used to control the outflow of nitrogen in the nitrogen storage tank 12. When the temperature in the transformer rises, the nitrogen storage tank control valve 22 opens to allow the nitrogen in the nitrogen storage tank 12 to enter the transformer.

[0057] Preferably, the driver 26 is a hollow cylinder with openings at both ends, and the gas driven pump 29 is fixed to the side wall inside the driver 26;

[0058] The gas driving pump 29 drives the gas to flow from bottom to top, thereby increasing the flow speed of the nitrogen entering the connecting pipe 21, so that the nitrogen can enter the transformer more quickly.

[0059] When the electromagnetic valve type transformer nitrogen injection fire extinguishing device of the embodiment of the present application is actually used:

[0060] When the temperature inside the transformer rises rapidly, the nitrogen storage tank control valve 22, the gas transmission control valve 27 and the oil control valve 25 are opened at the same time. The nitrogen storage tank control valve 22 is opened to allow the nitrogen in the nitrogen storage tank 12 to enter the transformer along the connecting pipe 21, and the transformer oil in the transformer is discharged from the transformer. Under the action of the driver 26, the transformer oil in the transformer is sucked into the storage box 23, and the oil driving pump 28 in the storage box 23 transports the transformer oil into the oil transmission pipe 13. The driver 26 drives the gas to enter the connecting pipe 21, so that the nitrogen in the connecting pipe 21 flows faster, thereby increasing the speed at which the nitrogen enters the transformer, thereby achieving rapid cooling of the inside of the transformer.

[0061] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A solenoid valve type transformer nitrogen injection fire extinguishing device, comprising a support assembly (10), the support assembly (10) comprising a fixed box (11), a nitrogen storage tank (12) and an oil pipeline (13); It is characterized in that Also included is a nitrogen injection assembly (20); The nitrogen injection assembly (20) comprises a connecting pipe (21), a nitrogen storage tank control valve (22), a storage box (23), an oil control valve (25), a driver (26), a gas transmission control valve (27) and an oil drive pump (28); The nitrogen storage tank control valve (22) is rotatably connected to the outlet of the nitrogen storage tank (12), and the connecting pipe (21) is used to transport nitrogen into the transformer; The storage box (23) is fixed to the bottom of the fixed box (11), and the top of the storage box (23) is connected to the driver (26) via a delivery pipe; A gas transmission control valve (27) is connected between the driver (26) and the connecting pipe (21); The oil-driven pump (28) is fixed in the storage box (23), and the oil-driven pump (28) is used to transport oil to the oil delivery pipe (13); The oil control valve (25) is fixed on the oil delivery pipe (13).

2. A solenoid valve type transformer nitrogen injection fire extinguishing device as claimed in claim 1, characterized in that: The nitrogen injection assembly (20) further comprises a one-way valve (24); The one-way valve (24) is rotatably connected to the delivery pipe between the storage box (23) and the oil delivery pipe (13), and the one-way valve (24) is used to control the flow direction of the transformer oil in the oil delivery pipe (13).

3. The solenoid valve type transformer nitrogen injection fire extinguishing device according to claim 1, characterized in that: The nitrogen injection assembly (20) further comprises a gas driven pump (29); The gas driven pump (29) is in communication with the connecting pipe (21); The gas driven pump (29) is fixed in the driver (26), the gas driven pump (29) is driven by a motor, and a plurality of fan blades are fixed on the rotating shaft of the gas driven pump (29); The gas driven pump (29) is capable of sucking oil and gas inside the transformer into the storage box (23); The gas driven pump (29) delivers the gas sucked out from the transformer into the connecting pipe (21), thereby accelerating the flow of nitrogen in the connecting pipe (21).

4. A solenoid valve type transformer nitrogen injection fire extinguishing device as claimed in claim 3, characterized in that: The oil-driven pump (28) delivers the transformer oil sucked out of the transformer to the oil delivery pipe (13) through the delivery pipe; The oil-driven pump (28) is located near the bottom of the storage box (23), and the inlet hole of the storage box (23) is located higher than the oil-driven pump (28).

5. The solenoid valve type transformer nitrogen injection fire extinguishing device according to claim 1, characterized in that: The nitrogen storage tank (12) is vertically fixed in the fixed box (11); The oil delivery pipe (13) passes through the fixed box (11), one end of the oil delivery pipe (13) is connected to the inside of the transformer, and the other end is connected to the oil storage tank outside the transformer.

6. The solenoid valve type transformer nitrogen injection fire extinguishing device as claimed in claim 1, characterized in that: The storage box (23) is connected to the inside of the transformer via a conveying pipe; The storage box (23) is used to store gas and transformer oil transported from inside the transformer.

7. The solenoid valve type transformer nitrogen injection fire extinguishing device according to claim 1, characterized in that: The gas delivery control valve (27) is an electromagnetic one-way valve (24), and the gas delivery control valve (27) can prevent the nitrogen in the nitrogen storage tank (12) from flowing into the storage box (23); The nitrogen storage tank control valve (22) is an electromagnetic control valve, and the nitrogen storage tank control valve (22) is used to control the outflow of nitrogen in the nitrogen storage tank (12).

8. The solenoid valve type transformer nitrogen injection fire extinguishing device as claimed in claim 4, characterized in that: The driver (26) is a hollow cylinder with openings at both ends, and the gas driven pump (29) is fixed on the side wall inside the driver (26); The gas driven pump (29) drives the gas to flow from bottom to top.

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