Transformer oil discharge and nitrogen injection fire extinguishing device

Abstract

The utility model provides an oil discharge and nitrogen injection fire extinguishing device for a transformer. The oil discharge and nitrogen injection fire extinguishing device comprises a replacement assembly, a nitrogen injection assembly and an oil discharge assembly, the replacing assembly comprises a shell, a sliding groove, a sliding block, a mounting base, a first plate body, a first air cylinder, a second air cylinder, a second plate body, a connecting pipe and a nitrogen cylinder. A sliding groove is formed in the bottom wall of the inner side of the shell, the bottom of the sliding block is connected to the interior of the sliding groove in a sliding mode, an installation base is installed on the top of the sliding block, and the bottom of the first plate body is fixedly connected to the top of the sliding block. When the nitrogen cylinder is replaced, the connecting pipe is separated from the nitrogen cylinder, then the first air cylinder is controlled to drive the mounting base to move in the sliding groove, the nitrogen cylinder extends out of the shell, at the moment, the nitrogen cylinder is taken out of the mounting base, and a new nitrogen cylinder is placed in the mounting base, so that the replacement work of the nitrogen cylinder is simplified, the workload is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a fire extinguishing device, in particular to a transformer oil draining and nitrogen injection fire extinguishing device, belonging to the technical field of power equipment safety. Background Art

[0002] Transformer explosion and fire are generally caused by internal insulation damage, which may be caused by: overload, operating overvoltage, lightning overvoltage, gradual aging of insulation, dampness of transformer oil or acidification of oil, and reduced insulation level.

[0003] A Chinese patent publication (publication number: CN216091968U) discloses an oil-draining and nitrogen-injecting fire-extinguishing device for an oil-immersed transformer, comprising a bottom plate, a transformer box, a box cover, an oil inlet valve, an oil drain valve, a one-way exhaust valve, a nitrogen injection device, a protective device, an oil drain device, a straw device and an induction control device. The top of the bottom plate is connected to the bottom of the transformer box, the top of the transformer box is connected and provided with an opening, the box cover is installed at the top opening of the transformer box, the oil inlet valve is connected and provided on the upper outer wall of the transformer box, the oil drain valve is connected and provided on the lower outer wall of the transformer box, the one-way exhaust valve is installed on the top of the box cover and communicates with the inside of the transformer box, and the protective device is installed on the top of the bottom plate; the utility model reduces the oxygen content inside the transformer box by injecting a large amount of nitrogen into the transformer box, improves the rapid fire extinguishing effect of the device on the transformer, and at the same time, timely extracts the transformer oil when a fire occurs, which can effectively prevent the oil from supporting the combustion of the transformer, and plays a double protective role; the replacement of the nitrogen cylinder of the utility model is relatively complicated, thereby reducing the work efficiency of the staff and increasing the workload. Therefore, a transformer oil-draining and nitrogen-injecting fire-extinguishing device is proposed. Utility Model Content

[0004] In view of this, the utility model provides a transformer oil draining and nitrogen injection fire extinguishing device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the utility model is implemented as follows: a transformer oil draining and nitrogen injection fire extinguishing device comprises a replacement component, a nitrogen injection component and an oil draining component;

[0006] The replacement assembly includes a housing, a slide groove, a slider, a mounting seat, a first plate, a first cylinder, a second cylinder, a second plate, a connecting pipe and a nitrogen bottle;

[0007] A sliding groove is provided on the inner bottom wall of the shell, the bottom of the slider is slidably connected to the inside of the sliding groove, a mounting seat is installed on the top of the slider, the bottom of the first plate is fixedly connected to the top of the slider, the outer side wall of the first cylinder is fixedly connected to the inner bottom wall of the shell, and the piston rod of the first cylinder is fixedly connected to the outer side wall of the mounting seat.

[0008] Further preferably, the outer side wall of the second cylinder is fixedly connected to the inner side wall of the shell, the piston rod of the second cylinder is fixedly connected to the top of the second plate body, one side of the second plate body is fixedly connected to the outer side wall of the connecting pipe, and one end of the connecting pipe is clamped to the gas outlet of the nitrogen bottle.

[0009] Further preferably, the nitrogen injection assembly includes a first tube body, a second tube body, a third tube body, a first solenoid valve, a transformer body, a base, a fire alarm and a spring tube; one end of the spring tube is connected to the interior of the connecting tube, and the other end of the spring tube is connected to one end of the first tube body.

[0010] Further preferably, one end of the first tube body is connected to one end of the second tube body, the other end of the second tube body is connected to the interior of the transformer body, a third tube body is arranged around the outer wall of the transformer body, and one end of the third tube body is connected to the interior of the first tube body.

[0011] Further preferably, the bottom of the transformer body is fixedly connected to the top of the base, and a fire alarm is installed on the top of the transformer body.

[0012] Further preferably, the oil drain assembly includes an oil tank, a pump body, a second solenoid valve, an oil return pipe and an exhaust pipe; the outer wall of the pump body is fixedly connected to the top of the oil tank, the output end of the pump body is connected to the interior of the oil tank, the input end of the pump body is connected to one end of the oil return pipe, and the other end of the oil return pipe is connected to the interior of the transformer body.

[0013] Further preferably, a second solenoid valve is installed on the outer side wall of the oil return pipe, and one end of the exhaust pipe is connected to the interior of the oil tank.

[0014] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0015] When the nitrogen bottle of the utility model needs to be replaced, the second cylinder is controlled to drive the second plate to move so that the connecting pipe is separated from the nitrogen bottle, and then the first cylinder is controlled to drive the mounting seat to move in the slide groove so that the nitrogen bottle is extended from the shell body. At this time, the nitrogen bottle is taken out from the mounting seat and a new nitrogen bottle is placed in the mounting seat, thereby simplifying the replacement work of the nitrogen bottle, reducing the workload and improving the work efficiency.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a side view structural diagram of the utility model;

[0020] Figure 3 This is a bottom view of the structure of the utility model;

[0021] Figure 4 This is a structural diagram of a replacement component of the utility model;

[0022] Figure 5 For the utility model Figure 4 Structural diagram at point A in .

[0023] Figure numerals: 101, replacement assembly; 10, shell; 11, slide groove; 12, slider; 13, mounting seat; 14, first plate body; 15, first cylinder; 16, second cylinder; 17, second plate body; 18, connecting pipe; 19, nitrogen bottle; 201, nitrogen injection assembly; 20, first tube body; 21, second tube body; 22, third tube body; 23, first solenoid valve; 24, transformer body; 25, base; 26, fire alarm; 27, spring tube; 301, oil drain assembly; 30, oil tank; 31, pump body; 32, second solenoid valve; 33, oil return pipe; 34, exhaust pipe. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-5 As shown, the embodiment of the utility model provides a transformer oil draining and nitrogen injection fire extinguishing device, including a replacement component 101, a nitrogen injection component 201 and an oil draining component 301;

[0027] The replacement assembly 101 includes a housing 10, a slide groove 11, a slider 12, a mounting seat 13, a first plate 14, a first cylinder 15, a second cylinder 16, a second plate 17, a connecting pipe 18 and a nitrogen bottle 19;

[0028] A slide groove 11 is provided on the inner bottom wall of the shell 10, the bottom of the slider 12 is slidably connected to the inside of the slide groove 11, a mounting seat 13 is installed on the top of the slider 12, the bottom of the first plate 14 is fixedly connected to the top of the slider 12, the outer wall of the first cylinder 15 is fixedly connected to the inner bottom wall of the shell 10, and the piston rod of the first cylinder 15 is fixedly connected to the outer wall of the mounting seat 13.

[0029] In one embodiment, the outer wall of the second cylinder 16 is fixedly connected to the inner wall of the shell 10, the piston rod of the second cylinder 16 is fixedly connected to the top of the second plate 17, one side of the second plate 17 is fixedly connected to the outer wall of the connecting pipe 18, and one end of the connecting pipe 18 is clamped to the gas outlet of the nitrogen bottle 19. Through the setting of the shell 10, the second cylinder 16 is fixed, and through the setting of the second cylinder 16, the second plate 17 is fixed. Through the setting of the second plate 17, the connecting pipe 18 is fixed. By controlling the second cylinder 16 to drive the second plate 17 to contract, the connecting pipe 18 is separated from the nitrogen bottle 19, and the first cylinder 15 is controlled to drive the mounting seat 13 to move in the slide groove 11, so that the nitrogen bottle 19 is extended from the shell 10, thereby replacing the nitrogen bottle 19.

[0030] In one embodiment, the nitrogen injection assembly 201 includes a first tube body 20, a second tube body 21, a third tube body 22, a first solenoid valve 23, a transformer body 24, a base 25, a fire alarm 26 and a spring tube 27; one end of the spring tube 27 is connected to the interior of the connecting tube 18, and the other end of the spring tube 27 is connected to one end of the first tube body 20. Through the setting of the connecting tube 18, the spring tube 27 plays a fixing role.

[0031] In one embodiment, one end of the first tube body 20 is connected to one end of the second tube body 21, and the other end of the second tube body 21 is connected to the interior of the transformer body 24. A third tube body 22 is arranged around the outer wall of the transformer body 24, and one end of the third tube body 22 is connected to the interior of the first tube body 20. When a fire occurs, the nitrogen in the nitrogen bottle 19 is transported to the first tube body 20 through the spring tube 27, and then transported to the transformer body 24 by the first tube body 20, thereby playing a fire extinguishing role. When the staff needs to overhaul and the external temperature of the transformer body 24 is high, the first solenoid valve 23 is opened to allow the nitrogen in the first tube body 20 to be transported to the third tube body 22, so that the third tube body 22 cools the surface of the transformer body 24.

[0032] In one embodiment, the bottom of the transformer body 24 is fixedly connected to the top of the base 25, and a fire alarm 26 is installed on the top of the transformer body 24. The base 25 is arranged to fix the transformer body 24, and the fire alarm 26 is fixed to the transformer body 24.

[0033] In one embodiment, the oil drain assembly 301 includes an oil tank 30, a pump body 31, a second solenoid valve 32, an oil return pipe 33 and an exhaust pipe 34; the outer wall of the pump body 31 is fixedly connected to the top of the oil tank 30, the output end of the pump body 31 is connected to the interior of the oil tank 30, the input end of the pump body 31 is connected to one end of the oil return pipe 33, and the other end of the oil return pipe 33 is connected to the interior of the transformer body 24. The setting of the oil tank 30 fixes the pump body 31, the setting of the pump body 31 fixes the oil return pipe 33, and the setting of the oil return pipe 33 fixes the second solenoid valve 32.

[0034] In one embodiment, a second solenoid valve 32 is installed on the outer wall of the return oil pipe 33, and one end of the exhaust pipe 34 is connected to the interior of the oil tank 30. The pump body 31 is controlled by the second solenoid valve 32 so that the pump body 31 draws the oil in the transformer body 24 into the oil tank 30 to prevent the oil from assisting the combustion of the transformer body 24 in the event of a fire. The exhaust pipe 34 is provided to help discharge the pressure in the oil tank 30 to prevent deformation of the oil tank 30.

[0035] The utility model is in operation: when a fire occurs, the fire alarm 26 sends an electrical signal to the second solenoid valve 32, so that the second solenoid valve 32 controls the pump body 31 to pump the oil in the transformer body 24 into the oil tank 30, to prevent the oil in the transformer body 24 from fueling the fire, and then the nitrogen in the nitrogen bottle 19 is transported to the transformer body 24 through the first pipe body 20, thereby reducing the oxygen content inside the transformer body 24 and playing a role in extinguishing the fire. When the staff needs to inspect and repair, and the external temperature of the transformer body 24 is high, by opening The first solenoid valve 23 allows the nitrogen in the first tube body 20 to be transported to the third tube body 22, so that the third tube body 22 cools the surface of the transformer body 24. When the nitrogen bottle 19 needs to be replaced, the second plate body 17 is driven to contract by controlling the second cylinder 16, so that the connecting pipe 18 is separated from the nitrogen bottle 19, and the first cylinder 15 is controlled to drive the mounting seat 13 to move in the slide groove 11, so that the nitrogen bottle 19 is extended from the shell 10, which is convenient for replacing the nitrogen bottle 19, thereby reducing the workload of the staff and improving the work efficiency.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A transformer oil draining and nitrogen injection fire extinguishing device, characterized in that: It comprises a replacement component (101), a nitrogen injection component (201) and an oil discharge component (301); The replacement assembly (101) comprises a housing (10), a slide groove (11), a slider (12), a mounting seat (13), a first plate (14), a first cylinder (15), a second cylinder (16), a second plate (17), a connecting pipe (18) and a nitrogen bottle (19); The inner bottom wall of the shell (10) is provided with a slide groove (11), the bottom of the slider (12) is slidably connected to the inside of the slide groove (11), the top of the slider (12) is installed with a mounting seat (13), the bottom of the first plate (14) is fixedly connected to the top of the slider (12), the outer side wall of the first cylinder (15) is fixedly connected to the inner bottom wall of the shell (10), and the piston rod of the first cylinder (15) is fixedly connected to the outer side wall of the mounting seat (13).

2. A transformer oil draining and nitrogen injection fire extinguishing device according to claim 1, characterized in that: The outer wall of the second cylinder (16) is fixedly connected to the inner wall of the shell (10), the piston rod of the second cylinder (16) is fixedly connected to the top of the second plate body (17), one side of the second plate body (17) is fixedly connected to the outer wall of the connecting pipe (18), and one end of the connecting pipe (18) is clamped to the gas outlet of the nitrogen bottle (19).

3. A transformer oil draining and nitrogen injection fire extinguishing device according to claim 2, characterized in that: The nitrogen injection assembly (201) comprises a first tube body (20), a second tube body (21), a third tube body (22), a first solenoid valve (23), a transformer body (24), a base (25), a fire alarm (26) and a spring tube (27); one end of the spring tube (27) is connected to the interior of the connecting tube (18), and the other end of the spring tube (27) is connected to one end of the first tube body (20).

4. A transformer oil draining and nitrogen injection fire extinguishing device according to claim 3, characterized in that: One end of the first tube body (20) is connected to one end of the second tube body (21), and the other end of the second tube body (21) is connected to the interior of the transformer body (24). A third tube body (22) is arranged around the outer wall of the transformer body (24), and one end of the third tube body (22) is connected to the interior of the first tube body (20).

5. A transformer oil draining and nitrogen injection fire extinguishing device according to claim 4, characterized in that: The bottom of the transformer body (24) is fixedly connected to the top of the base (25), and a fire alarm (26) is installed on the top of the transformer body (24).

6. A transformer oil draining and nitrogen injection fire extinguishing device according to claim 3, characterized in that: The oil discharge assembly (301) comprises an oil tank (30), a pump body (31), a second solenoid valve (32), an oil return pipe (33) and an exhaust pipe (34); the outer wall of the pump body (31) is fixedly connected to the top of the oil tank (30), the output end of the pump body (31) is connected to the interior of the oil tank (30), the input end of the pump body (31) is connected to one end of the oil return pipe (33), and the other end of the oil return pipe (33) is connected to the interior of the transformer body (24).

7. A transformer oil draining and nitrogen injection fire extinguishing device according to claim 6, characterized in that: A second solenoid valve (32) is installed on the outer wall of the oil return pipe (33), and one end of the exhaust pipe (34) is connected to the interior of the oil tank (30).

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