Fire-fighting pipeline support for oil conservator of water spray fire extinguishing system of transformer

Abstract

The utility model relates to a transformer water spray fire extinguishing system conservator fire-fighting pipeline support, which belongs to the technical field of fire-fighting pipeline supports, and comprises a horizontally arranged looped network pipeline, the looped network pipeline is connected with a fire-fighting water supply system, the looped network pipeline is vertically provided with a plurality of vertical pipes, and the plurality of vertical pipes are distributed along the length direction of the looped network pipeline. Each vertical pipe is provided with a first spray head, the fire-fighting pipe is located above the vertical pipes and connected with one of the vertical pipes, a second spray head is connected to the lower portion of the fire-fighting pipe, the spraying direction of the second spray head faces downwards, the vertical pipes are connected with supporting pieces, and the supporting pieces are connected with the fire-fighting pipe. The vertical pipe is fixedly connected with an oil conservator of the transformer through a supporting piece. The second spray head with the downward spraying direction is adopted, the protection area and strength of water mist are guaranteed, the second spray head is closer to a protected object, and the problem that the effective spraying range of water spraying is limited is solved.

Description

Technical Field

[0001] This utility model relates to a fire-fighting pipe support for an oil tank in a transformer water spray fire extinguishing system, belonging to the technical field of fire-fighting pipe support. Background Technology

[0002] Oil-immersed power transformers mainly consist of the transformer body, insulating oil and its piping system, oil tank, radiator, high and low voltage bushings, and drain valve. The transformer contains transformer oil, insulating materials, and other flammable substances. If a short circuit occurs in the coils within the tank, a high-temperature, high-pressure space will be created in a very short time, causing the outer casing to rupture, resulting in a large amount of oil spraying out and igniting, thus causing a fire. Substations (converter stations) with single oil-immersed transformers with a capacity of 125MVA or higher should be equipped with fixed automatic fire suppression systems. Currently, water mist fire suppression systems are the most commonly used fire suppression method for transformers in China.

[0003] like Figure 4 As shown, when the protected object is an oil-immersed power transformer, water mist nozzles should be installed at the insulator riser orifice, oil conservator, and oil sump. Since the oil conservator is located at the top of the transformer, the nozzles protecting it should be at the highest point of the system piping. Conventionally, the protection of the oil conservator and the top of the tank is achieved by arranging nozzles around the perimeter of the piping and spraying them from the side. However, due to the limited effective range of the water mist nozzles and the insufficient protection area provided by the side spraying method, it is difficult to achieve effective water mist coverage of the oil conservator and the top of the tank. This is mainly manifested in the following ways:

[0004] (1) The side spray nozzle has a limited range, atomization angle and protection area, and cannot provide effective protection for the transformer oil conservator and the top of the oil tank.

[0005] (2) The special protective water mist nozzle and branch pipe support of the oil pillow at the highest point are poor, and the stability is insufficient under the action of pressurized water, which makes it easy to loosen and be damaged over a long period of time.

[0006] Therefore, there is a need for a transformer water spray fire extinguishing system oil tank fire pipe support to ensure the protection area and intensity of the water mist and improve the stability of the pipeline network. Summary of the Invention

[0007] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, to provide a transformer water spray fire extinguishing system oil tank fire pipeline support to ensure the protection area and intensity of water mist and improve the stability of the pipeline network.

[0008] The technical solution adopted by this utility model to solve the above problems is as follows: a fire-fighting pipe support for an oil tank of a transformer water mist fire extinguishing system, comprising a horizontally arranged ring network pipe connected to a fire water supply system, multiple vertically arranged risers distributed along the length of the ring network pipe, each riser equipped with a first nozzle, and a fire-fighting pipe located above the risers and connected to one of the risers, with a second nozzle connected below the fire-fighting pipe, the second nozzle spraying downwards, and a support member connected to the riser, the riser being fixedly connected to the transformer oil tank through the support member.

[0009] Preferably, the fire-fighting pipe is arranged horizontally.

[0010] Preferably, multiple second nozzles are provided, and the multiple second nozzles are distributed along the length of the fire pipe.

[0011] Preferably, the fire-fighting pipe is provided with an adjusting short pipe, which is vertically arranged, with its top end connected to the fire-fighting pipe and its bottom end connected to the second sprinkler head through an internal connector.

[0012] Preferably, the support includes a support pipe arranged vertically, a support plate is fixedly installed at the top of the support pipe, a clamp is fixedly installed at the bottom of the support pipe, the fire pipe is fixedly installed on the support plate, and the clamp is fixedly installed on the oil tank by a locking device.

[0013] Preferably, the fire-fighting pipe is detachably and fixedly mounted on the support plate using U-shaped pipe clamps.

[0014] Preferably, the locking element is a bolt.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] (1) The second nozzle with the spray direction set downward ensures the protection area and intensity of the water mist. The second nozzle is closer to the protected object, which solves the problem of limited effective spray range. In addition, the atomization angle and intensity utilization of the second nozzle are higher. It is set along the oil conservator projection surface to ensure the designed protection area and intensity, and completely covers the transformer oil conservator and top.

[0017] (2) The pipeline network is more stable. In the existing technology, the oil tank protection pipe and sprinkler head at the highest point are completely supported by their own branch network risers. Under the action of pressurized water, the stability is poor, and they are easy to loosen, be damaged and deformed. They may even gradually fail to meet the safety distance from the live parts of the transformer. This design realizes the fixing of the fire pipe and the oil tank, which greatly improves the stability and ensures the safe and stable operation of the transformer.

[0018] (3) The structure and the transformer are detachable and there is no welding between them, which avoids hot work on the top of the transformer and prevents damage to the transformer body. When daily maintenance is required, the fire protection facilities and the transformer are detachable, which is convenient and quick. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a transformer water spray fire extinguishing system oil tank fire pipe support according to the present invention;

[0020] Figure 2 This is a schematic diagram of the connection structure between the support component and the fire pipe;

[0021] Figure 3 A schematic diagram of the connection structure between the fire pipe and the second sprinkler head;

[0022] Figure 4 This is a schematic diagram of the existing technology.

[0023] Among them: ring network pipe 1, riser 2, first sprinkler head 3, fire pipe 4, second sprinkler head 5, adjusting short pipe 6, internal joint 7, support pipe 8, support plate 9, clamp 10, U-shaped pipe clamp 11, bolt 12, transformer 13, oil tank 14. Detailed Implementation

[0024] like Figure 1-3 As shown in this embodiment, a transformer water mist fire extinguishing system oil tank fire-fighting pipe support includes a horizontally arranged ring network pipe 1, which is connected to a fire water supply system. The ring network pipe 1 has multiple vertically arranged risers 2, which are distributed along the length of the ring network pipe 1. Each riser 2 is equipped with a first nozzle 3. The system also includes a fire pipe 4, which is arranged horizontally and located above the risers 2. The fire pipe 4 is connected to one of the risers 2. A second nozzle 5 is connected to the bottom of the fire pipe 4, and the second nozzle 5 is arranged with its spray direction facing downward. A support member is connected to the riser 2, and the riser 2 is fixedly connected to the oil tank 14 of the transformer 13 through the support member.

[0025] During operation, transformer 13 is located within the ring structure of ring network pipeline 1. When fire extinguishing is required, the fire water supply system delivers water to ring network pipeline 1. The water in ring network pipeline 1 is delivered from riser 2 to the first sprinkler head 3 and then sprayed out. The water sprayed from the first sprinkler head 3 acts on transformer 13 to extinguish the fire in transformer 13. At the same time, the water in one of the risers 2 is also delivered to fire pipe 4. The water in fire pipe 4 is delivered to the second sprinkler head 5 and then sprayed out. The water sprayed from the second sprinkler head 5 forms a cone-shaped water mist. In fact, the second sprinkler head 5 is located directly above the oil conservator 14. The cone-shaped water mist sprayed from the second sprinkler head 5 protects the oil conservator 14.

[0026] Multiple second nozzles 5 are provided, and the multiple second nozzles 5 are distributed along the length of the fire pipe 4. The specific number of second nozzles 5 depends on the size of the oil tank 14 and the spray area of ​​the second nozzles 5, to ensure that the water mist completely covers the projected surface of the oil tank 14.

[0027] An adjusting short pipe 6 is provided on the fire pipe 4. The adjusting short pipe 6 is arranged vertically. The top end of the adjusting short pipe 6 is connected to the fire pipe 4, and the bottom end of the adjusting short pipe 6 is connected to the second nozzle 5 through an internal connector 7.

[0028] Multiple regulating short pipes 6 are provided, and multiple regulating short pipes 6 are connected to multiple second nozzles 5 in a one-to-one correspondence.

[0029] After the water in the fire pipe 4 is transported to the regulating short pipe 6, the water in the regulating short pipe 6 is transported to the second sprinkler head 5 through the inner connector 7;

[0030] The support includes a support pipe 8, which is arranged vertically. A support plate 9 is fixedly installed at the top of the support pipe 8, and a clamp 10 is fixedly installed at the bottom of the support pipe 8. The fire pipe 4 is fixedly installed on the support plate 9. Specifically, the fire pipe 4 is detachably fixed on the support plate 9 by means of a U-shaped pipe clamp 11. The clamp 10 is fixedly installed on the oil tank 14 by means of a locking component, wherein the locking component is a bolt 12.

[0031] In summary, the following results are obtained:

[0032] The second nozzle 5, which is set downwards, ensures the protection area and intensity of the water mist. The second nozzle 5 is closer to the protected object, which solves the problem of limited effective water spray range. In addition, the atomization angle and intensity utilization of the second nozzle 5 are higher. It is set along the projection surface of the oil conservator 14 to ensure the designed protection area and intensity, and completely covers the transformer 13 oil conservator 14 and the top.

[0033] 2. The pipeline network is more stable. In the existing technology, the pipeline layout at the highest point, the oil tank 14, protects the pipeline and sprinkler head and relies entirely on its own branch network riser 2 for support. Under the action of pressurized water, the stability is poor, and it is easy to loosen, be damaged and deformed. It may even gradually fail to meet the safe distance from the live parts of the transformer 13. However, this design realizes the fixing of the fire pipe 4 and the oil tank 14, which greatly improves the stability and ensures the safe and stable operation of the transformer 13.

[0034] The structure is detachable from the transformer 13 and there is no welding between them, which avoids hot work on the top of the transformer 13 during construction and prevents damage to the transformer 13 body. In addition, the fire protection facilities can be detached from the transformer 13 for convenient and quick maintenance.

[0035] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A kind of transformer water spray fire extinguishing system oil pillow fire pipeline support, comprising horizontally arranged ring network pipeline (1), the ring network pipeline (1) is connected fire water supply system, the ring network pipeline (1) is vertically provided with multiple risers (2), multiple risers (2) are distributed along the length direction of ring network pipeline (1), first spray head (3) is arranged on each riser (2), characterized in that: Further comprising a fire pipe (4) located above the vertical pipe (2), the fire pipe (4) is connected with one of the vertical pipes (2), a second nozzle (5) is connected below the fire pipe (4), the spraying direction of the second nozzle (5) is arranged downward, a support is connected on the vertical pipe (2), and the vertical pipe (2) is fixedly connected with an oil pillow (14) of the transformer (13) through the support.

2. A transformer water deluge system oil pillow fire protection piping support according to claim 1, characterized in that: The fire pipe (4) is horizontally arranged.

3. A transformer water deluge system oil pillow fire protection piping support according to claim 1, wherein: The second nozzle (5) is provided with a plurality of second nozzles (5) distributed along the length direction of the fire pipe (4).

4. A transformer water deluge system oil pillow fire protection piping support according to claim 1, wherein: An adjusting short pipe (6) is arranged on the fire pipe (4), the adjusting short pipe (6) is vertically arranged, the top end of the adjusting short pipe (6) is connected with the fire pipe (4), and the bottom end of the adjusting short pipe (6) is connected with the second nozzle (5) through an inner joint (7).

5. A transformer water deluge system oil pillow fire protection piping support according to claim 1, wherein: The support comprises a support pipe (8), the support pipe (8) is vertically arranged, a support plate (9) is fixedly arranged at the top end of the support pipe (8), a clamp (10) is fixedly arranged at the bottom end of the support pipe (8), the fire pipe (4) is fixedly arranged on the support plate (9), and the clamp (10) is fixedly arranged on the oil pillow (14) through a locking piece.

6. A transformer water deluge system oil pillow fire protection piping support according to claim 5, wherein: The fire pipe (4) is detachably fixedly arranged on the support plate (9) through a U-shaped pipe clamp (11).

7. A transformer water deluge system oil pillow fire protection piping support according to claim 5, wherein: The locking piece is a bolt (12).

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