Spray fire extinguishing system for transformer

Abstract

The utility model discloses a spray fire extinguishing system for a transformer, and relates to the technical field of electrical equipment. According to the technical key points, the device comprises an underground reservoir located on one side of a transformer body, a submersible pump is installed in the underground reservoir, and the submersible pump is connected with a lower connecting pipe through a water supply main pipe; a heat dissipation water pipe is arranged between every two adjacent heat dissipation fins on the front side and the rear side of the transformer body; the upper and lower ends of the radiating water pipe are respectively connected with the upper connecting pipe and the lower connecting pipe; one side of the upper connecting pipe is fixedly connected with one end of the water return main pipe, and the other end of the water return main pipe extends into the underground reservoir; the front side and the rear side of the transformer body are each provided with a side support, and the sides, close to each other, of the two side supports are each provided with a spraying unit. The two spraying units are both connected with a secondary water supply pipe, and the secondary water supply pipe is connected with a water return main pipe through a distribution unit. According to the fire extinguishing system, when the transformer body is normally used, a water source in the underground reservoir in the transformer fire extinguishing system can be efficiently utilized.

Description

Technical Field

[0001] This application relates to the technical field of electrical equipment, and particularly relates to a spray fire extinguishing system for a transformer. Background Art

[0002] Power transformers are one of the most important equipment in substations. Currently, commonly used transformers contain a large amount of flammable substances. When the transformer is used for a long time or under a large load, there is a risk of spontaneous combustion. If the spontaneously combusted transformer is not processed in time, the transformer is likely to explode due to fire, endangering the safety of surrounding equipment and buildings, etc., and causing significant economic losses. Therefore, a special spray fire extinguishing system is set for the transformer to reduce the risk when the transformer catches fire. The general composition of a spray fire extinguishing system mainly includes: an underground water storage tank, a water supply device, a water supply pipeline, a water mist nozzle, a temperature sensing system, a control device, etc. In reality, the probability of the transformer actually catching fire spontaneously is not high. As a result, the water in the underground water storage tank that provides water for the transformer fire extinguishing device will be idle for a long time, which will result in the problem that the water in the underground water storage tank of the transformer spray fire extinguishing system is not fully utilized. Utility Model Content

[0003] This application provides a spray fire extinguishing system for a transformer, which can effectively improve the utilization rate of the water source in the underground water storage tank of the transformer fire extinguishing system.

[0004] The above object of this application is achieved through the following technical solutions:

[0005] A spray fire extinguishing system for a transformer includes an underground water storage tank located on one side of the transformer body. A submersible pump is installed in the underground water storage tank. The water outlet end of the submersible pump is connected to a lower connecting pipe through a main water supply pipe. The lower connecting pipe is fixedly installed under the transformer body;

[0006] A heat dissipation water pipe is provided between the adjacent heat dissipation fins on the front and rear sides of the transformer body; the lower end of the heat dissipation water pipe is fixedly connected to the lower connecting pipe, and the upper end of the heat dissipation water pipe is fixedly connected to an upper connecting pipe above the transformer body; one side of the upper connecting pipe is fixedly connected to one end of a return water main pipe, and the other end of the return water main pipe extends into the underground water storage tank;

[0007] A side support is respectively provided on the front and rear sides of the transformer body. A spray unit is respectively provided on the side of the two side supports close to each other; both spray units are connected to a secondary water supply pipe. The secondary water supply pipe is connected to the return water main pipe through a distribution unit, and the distribution unit can control the flow direction of the water flow in the return water main pipe.

[0008] Further, the distribution unit includes a tee joint which is installed on the return water main pipe. An interface remaining after the tee joint is connected to the return water main pipe is connected to the secondary water supply pipe through a return water branch pipe. A first solenoid valve is installed on the return water main pipe, and the first solenoid valve is located at any position between the drainage end of the return water main pipe and the tee joint. A second solenoid valve is installed on the return water branch pipe.

[0009] Further, a booster pump is provided between the return water branch pipe and the secondary water supply pipe. The mutually adjacent ends of the return water branch pipe and the secondary water supply pipe are respectively connected to the input end and the output end of the booster pump. The booster pump is fixedly installed on the top of the underground water storage tank through a pump body support.

[0010] Further, the upper connecting pipe, the lower connecting pipe and the heat dissipation pipe are all metal flat pipes, and the specifications of the upper connecting pipe and the lower connecting pipe are larger than those of the heat dissipation pipe.

[0011] Further, the spraying unit includes a water supply vertical pipe connected to the secondary water supply pipe. The water supply vertical pipe is vertically installed at the middle position on the side of the side bracket close to the transformer body. A plurality of water supply branch pipes are symmetrically arranged on a relative side of the water supply vertical pipe along the length direction of the transformer body. A plurality of atomizing nozzles are evenly installed on the side of the water supply branch pipes close to the transformer body.

[0012] Further, the two ends of the top beams of the two side brackets are respectively connected by two horizontal cross bars. Two installation cross bars parallel to the length direction of the transformer body are installed between the two horizontal cross bars. A plurality of temperature sensors are installed on the mutually adjacent sides of the two installation cross bars.

[0013] Further, the temperature sensors on the two installation cross bars are arranged in a staggered manner.

[0014] Further, an inverted U-shaped bracket is provided directly above the transformer body. The lower end of the inverted U-shaped bracket is fixedly installed on the two horizontal cross bars. A smoke sensor is installed on the lower side of the top of the inverted U-shaped bracket.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] When the transformer body is in normal use, the distribution unit can control the water flow in the main return pipe so that it will not flow into the secondary water supply pipe. In this way, after the submersible pump pumps the water flow out of the underground reservoir, it provides power for the water flow, enabling the water flow to flow into the lower connecting pipe, and then sequentially flowing from the lower connecting pipe to each heat dissipation pipe. These heat dissipation pipes are located between the heat dissipation fins. Therefore, during the process of the water flow flowing upward to the upper connecting pipe, it will take away the heat dissipated by the heat dissipation fins, thereby playing an auxiliary heat dissipation effect on the transformer body. This helps the transformer body to work stably for a long time and reduces the probability of failure. After the water flow in the heat dissipation pipes converges again in the upper connecting pipe, it will be discharged back into the underground reservoir through the main return pipe and reused by the submersible pump. When the transformer body catches fire due to a fault, the distribution unit can change the flow direction of the water flow in the main return pipe so that the water flow is discharged from the secondary water supply pipe. In this way, the water flow in the main return pipe can flow through the secondary water supply pipe and be redistributed to the two spray units. The spray units can spray this water flow onto the transformer body, thereby achieving the effect of extinguishing the fire. Compared with the prior art, the present application not only effectively improves the utilization rate of the water source in the underground reservoir, but also can improve the heat dissipation effect of the transformer body, enabling it to work stably, efficiently and for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a three-dimensional view of the overall structure of the present application;

[0019] Figure 2 is a top view of the overall structure of the present application;

[0020] Figure 3 is a schematic structural diagram of the transformer body of the present application and its surrounding related components;

[0021] Figure 4 is a schematic structural diagram of the underground reservoir of the present application after removing the top plate and its surrounding related components.

[0022] Reference numerals: 1, transformer body; 2, underground reservoir; 3, submersible pump; 4, main water supply pipe; 5, lower connecting pipe; 6, heat dissipation water pipe; 7, upper connecting pipe; 8, main return water pipe; 9, side bracket; 10, spray unit; 101, water supply riser; 102, water supply branch pipe; 103, atomizing nozzle; 11, secondary water supply pipe; 12, distribution unit; 121, tee joint; 122, return water branch pipe; 123, first solenoid valve; 124, second solenoid valve; 13, booster pump; 14, pump body bracket; 15, horizontal cross bar; 16, installation cross bar; 17, temperature sensor; 18, inverted U-shaped bracket; 19, smoke sensor. Detailed implementation manners

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts also belong to the scope of protection of the present application.

[0024] As Figures 1 - 4 shown, a spray fire extinguishing system for a transformer disclosed in the present application includes an underground reservoir 2 located on one side of the transformer body 1. A submersible pump 3 is installed in the underground reservoir 2. The water outlet end of the submersible pump 3 is connected to the lower connecting pipe 5 through the main water supply pipe 4. The lower connecting pipe 5 is fixedly installed on the lower side of the transformer body 1; a heat dissipation water pipe 6 is provided between the adjacent heat dissipation fins on the front and rear sides of the transformer body 1; the lower end of the heat dissipation water pipe 6 is fixedly connected to the lower connecting pipe 5, and the upper end of the heat dissipation water pipe 6 is fixedly connected to the upper connecting pipe 7 above the transformer body 1; one side of the upper connecting pipe 7 is fixedly connected to one end of the main return water pipe 8, and the other end of the main return water pipe 8 extends into the underground reservoir 2; a side bracket 9 is provided on each of the front and rear sides of the transformer body 1, and a spray unit 10 is provided on the side of each of the two side brackets 9 close to each other; the two spray units 10 are both connected to the secondary water supply pipe 11, and the secondary water supply pipe 11 is connected to the main return water pipe 8 through the distribution unit 12, and the distribution unit 12 can control the flow direction of the water in the main return water pipe 8.

[0025] In the above embodiments, when the transformer body 1 in the prior art is working normally, the water in the underground reservoir 2 in its fire extinguishing system is in an idle state. If it is not used for a long time, the water in the underground reservoir 2 will be wasted due to evaporation, which will cause waste of water resources.

[0026] When the transformer body 1 of the present application is working normally, the distribution unit 12 can close the channel from the return water main 8 to the secondary water supply pipe 11, so that the water in the return water main 8 can only be discharged from the end of the return water main 8 located at the underground water reservoir 2. In this way, when the submersible pump 3 is working, it will first pump the water in the underground water reservoir 2 to the lower connecting pipe 5 below the transformer body 1 through the water supply pipe 4, and there is a heat dissipation water pipe 6 between every two adjacent heat dissipation fins before and after the transformer body 1, and the upper and lower ends of these heat dissipation water pipes 6 are respectively connected to the upper connecting pipe 7 and the lower connecting pipe 5, and the water in the lower connecting pipe 5 will be evenly distributed to each heat dissipation water pipe 6, and then these waters will be re-converged in the upper connecting pipe 7 after flowing through each heat dissipation water pipe 6. Because the upper connecting pipe 7 is connected to the return water main 8, the water flow converged in the upper connecting pipe 7 will be uniformly returned from the return water main 8 to the underground water reservoir 2 to continue to be used. When the water flows through the heat dissipation water pipe 6, it will take away part of the heat emitted by the heat dissipation fins on the transformer body 1, thereby helping the transformer body 1 to cool down quickly and effectively improving the working stability of the transformer body 1. This can also reduce the probability of failure of the transformer body 1, and the corresponding probability of fire caused by failure of the transformer body 1 will also be reduced. Since the underground water reservoir 2 is buried underground, the temperature in the underground water reservoir 2 is generally lower than that on the ground, and in order to ensure sufficient water source when extinguishing the fire, the volume of the underground water reservoir 2 is generally relatively large. In this way, when the water discharged from the return water main 8 is moved back to the submersible pump 3, most of the heat it carries can be dissipated, and better heat dissipation performance can be regained.

[0027] When the transformer body 1 spontaneously ignites due to an accident, the distribution unit 12 can block part of the channel in the return water main 8 and open the channel between the return water main 8 and the secondary water supply pipe 11. At this time, the water gathered by the upper connecting pipe 7 will flow into the secondary water supply pipe 11 through the channel between the return water main 8 and the secondary water supply pipe 11 after entering the return water main 8. Then the secondary water supply pipe 11 distributes the water to the two spray units 10 again. The two spray units 10 can spray the water to the transformer body 1 to achieve the effect of extinguishing the fire. Compared with the prior art, the present application can efficiently utilize the water in the underground water tank 2 when the transformer body 1 is working normally, and use it to dissipate heat and cool the transformer body 1. This not only reduces the failure rate of the transformer body 1, but also improves the utilization rate of water resources.

[0028] In the actual use process of each pipeline in the spray fire extinguishing system of the present application, the pipeline can be supported and fixed at the appropriate position of the pipeline by using pipeline brackets as needed (due to the difference in the actual use environment, the present application does not limit the shape and number of pipeline brackets) to ensure the smooth operation of the pipeline. Figure 1As shown in the figure, in order to ensure the stable operation of the return water branch pipe 122, two pipes are provided to fixedly support it at the part of the return water branch pipe 122 located on the top plate of the underground reservoir 2.

[0029] Furthermore, as Figure 4 shown, the distribution unit 12 includes a tee joint 121. The tee joint 121 is installed on the return water main pipe 8. After the tee joint 121 is connected to the return water main pipe 8, the remaining interface is connected to the secondary water supply pipe 11 through the return water branch pipe 122; a first solenoid valve 123 is installed on the return water main pipe 8, and the first solenoid valve 123 is located at any position between the drainage end of the return water main pipe 8 and the tee joint 121; a second solenoid valve 124 is installed on the return water branch pipe 122.

[0030] In the above embodiments, the tee joint 121 is a prior art. It has three interfaces. Two of the interfaces in the tee joint 121 of the present application are connected to the return water main pipe 8, and the other interface is connected to the secondary water supply pipe 11 through the return water branch pipe 122. In this way, the water in the return water main pipe 8 can not only be discharged from the return water main pipe 8 itself, but also flow to the secondary water supply pipe 11. And the present application installs a first solenoid valve 123 at a position between its own drainage port and the tee joint 121 on the return water main pipe 8, and a second solenoid valve 124 is installed on the return water branch pipe 122. When the spraying unit 10 does not need to work, the second solenoid valve 124 is closed and the first solenoid valve 123 is opened. The entire pipe body of the return water main pipe 8 is unblocked, the return water branch pipe 122 that the return water main pipe 8 flows to the secondary water supply pipe 11 is disconnected, and the water flow in the return water main pipe 8 will only be discharged from its own drainage port to the underground reservoir 2. When the transformer body 1 catches fire, the second solenoid valve 124 is opened and the first solenoid valve 123 is closed. The water flow in the return water main pipe 8 can flow from the return water branch pipe 122 to the secondary water supply pipe 11 after reaching the tee joint 121, so that the spraying unit 10 can obtain water flow and spray water on the transformer body 1 to extinguish the fire.

[0031] Furthermore, as Figure 4 shown, a booster pump 13 is provided between the return water branch pipe 122 and the secondary water supply pipe 11. The mutually close ends of the return water branch pipe 122 and the secondary water supply pipe 11 are respectively connected to the input end and the output end of the booster pump 13; the booster pump 13 is fixedly installed on the top of the underground reservoir 2 through a pump body support 14.

[0032] In the above embodiments, since the water flow has passed through a long flow path when it reaches the secondary water supply pipe 11 and its power has been lost, the booster pump 13 provided between the return water branch pipe 122 and the secondary water supply pipe 11 in the present application can re-pressurize the water flow that is about to flow to the secondary water supply pipe 11. These water flows can then have sufficient power to reach the spraying unit 10, and can be sprayed more evenly after reaching the spraying unit 10, achieving a better fire extinguishing effect.

[0033] Further, as Figures 1 - 3 shown, the upper connecting pipe 7, the lower connecting pipe 5, and the heat dissipation water pipe 6 are all metal flat pipes, and the specifications of the upper connecting pipe 7 and the lower connecting pipe 5 are larger than those of the heat dissipation water pipe 6.

[0034] In the above embodiments, the heat dissipation water pipe 6 is set as a metal flat pipe, which can increase the contact area between the heat dissipation water pipe 6 and the hot air emitted by the heat dissipation fins on the adjacent two sides, thereby improving the heat dissipation effect. The upper connecting pipe 7 and the lower connecting pipe 5 are set as metal flat pipes with larger specifications than the heat dissipation water pipe 6, which not only facilitates the fixed installation of the upper connecting pipe 7 and the lower connecting pipe 5 on the transformer body 1, but also facilitates the lower connecting pipe 5 to supply water to multiple heat dissipation water pipes 6, and the upper connecting pipe 7 to collect water from multiple heat dissipation water pipes 6.

[0035] Further, as Figure 3 shown, the spraying unit 10 includes a water supply riser 101 connected to the secondary water supply pipe 11. The water supply riser 101 is vertically installed at the middle position on the side of the side bracket 9 close to the transformer body 1. A plurality of water supply branch pipes 102 are symmetrically arranged on the opposite sides of the water supply riser 101 along the length direction of the transformer body 1. A plurality of atomizing nozzles 103 are evenly installed on the side of the water supply branch pipes 102 close to the transformer body 1.

[0036] In the above embodiments, the water supply riser 101 is fixedly installed on the side bracket 9, and the water supply branch pipes 102 with a smaller diameter than the water supply riser 101 are fixedly installed on the side bracket 9 through pipe clamps. One end of the secondary water supply pipe 11 far from the booster pump 13 can be connected to two water supply risers 101 simultaneously through a tee; or two holes identical to the water supply riser 101 can be opened on the secondary water supply pipe 11, and then the two water supply risers 101 are respectively welded to these two holes on the secondary water supply pipe 11, so that the secondary water supply pipe 11 can provide water sources for the two water supply risers 101 simultaneously. The two water supply risers 101 obtain water flow and can evenly distribute it to the water supply branch pipes 102 on both sides, and then the atomizing nozzles 103 on each water supply branch pipe 102 convert the water into misty water and evenly spray it onto the transformer body 1, thereby achieving a comprehensive spray fire extinguishing effect on the transformer body 1.

[0037] Further, as Figures 1 - 3 shown, both ends of the top beams of the two side brackets 9 are respectively connected by two horizontal crossbars 15. Two installation crossbars 16 parallel to the length direction of the transformer body 1 are installed between the two horizontal crossbars 15. A plurality of temperature sensors 17 are installed on the mutually adjacent sides of the two installation crossbars 16.

[0038] In the above embodiments, when the transformer body 1 catches fire, the air above the transformer body 1 will be quickly heated. The temperature sensor 17 installed above the transformer body 1 can quickly capture the information of abnormal temperature and then transmit it to the control host of the substation. The control host of the substation (the control host is a facility often used in the fire protection field in order to monitor the operation of each device and take timely measures when the device is abnormal. It has the functions of collecting signals, processing signals, and sending command signals. The main transformer fire protection host in the patent document with the application number CN202123257257.X can achieve similar functions. Therefore, the substation control host is a prior art, and its specific working principle will not be elaborated here.) After receiving this information, it can transmit signals to the first solenoid valve 123 and the second solenoid valve 124 to control the opening and closing of the two solenoid valves, so as to ensure that the spraying unit 10 can quickly extinguish the fire on the transformer body 1.

[0039] Further, as Figure 2 and Figure 3 shown, the temperature sensors 17 on the two mounting crossbars 16 are arranged offset from each other.

[0040] In the above embodiments, the temperature sensors 17 on the two mounting crossbars 16 are arranged offset from each other, which can increase the monitoring area of the temperature sensors 17 and thus improve the monitoring accuracy.

[0041] Further, as Figure 1 and Figure 3 shown, an inverted U-shaped bracket 18 is provided directly above the transformer body 1. The lower end of the inverted U-shaped bracket 18 is fixedly installed on the two horizontal crossbars 15, and a smoke sensor 19 is installed on the lower side of the top of the inverted U-shaped bracket 18.

[0042] In the above embodiments, the inverted U-shaped bracket 18 can install the smoke sensor 19 directly above the transformer body 1. When some materials of the transformer body 1 fail to produce smoke but the temperature has not risen yet, the smoke sensor 19 can quickly capture the smoke information and then transmit this information to the control host of the substation, and then timely control the spraying unit 10 to extinguish the fire on the transformer body 1. This can further improve the fire prevention performance of the transformer body 1.

[0043] The implementation principle of this embodiment is as follows: When the transformer body 1 is in normal use, the first solenoid valve 123 is in the open state and the second solenoid valve 124 is in the closed state. In this way, after the submersible pump 3 pumps water from the underground reservoir 2, it provides power for the water flow, enabling the water flow to flow into the lower connecting pipe 5, and then successively flow from the lower connecting pipe 5 to each heat dissipation pipe 6. These heat dissipation pipes 6 are located between the heat dissipation fins. Therefore, during the process of the water flow flowing upward to the upper connecting pipe 7, it will carry away the heat dissipated by the heat dissipation fins, thus achieving the effect of assisting in cooling the transformer body 1. After the water flow in the heat dissipation pipes 6 converges again in the upper connecting pipe 7, it will be discharged back into the underground reservoir 2 through the return water main pipe 8 and reused by the submersible pump 3. When the transformer body 1 catches fire due to a malfunction, the signal can be captured by the temperature sensor 17 or the smoke sensor 19 and transmitted to the control host of the substation. After receiving the signal, the control host can send instructions to the first solenoid valve 123 and the second solenoid valve 124, causing the first solenoid valve 123 to close and the second solenoid valve 124 to open. In this way, the flow direction of the water flow in the return water main pipe 8 can be changed, so that when the water flow reaches the tee joint 121 in the return water main pipe 8, it will flow to the secondary water supply pipe 11. The secondary water supply pipe 11 can redistribute this water flow to the two spray units 10. The atomizing nozzles 103 in the spray units 10 can spray this water flow onto the transformer body 1, thus achieving the effect of extinguishing the fire.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A spray fire extinguishing system for a transformer, comprising an underground water reservoir (2) located on one side of a transformer body (1), characterized in that: A submersible pump (3) is installed in the underground water reservoir (2); the water outlet of the submersible pump (3) is connected to a lower connecting pipe (5) via a water supply main pipe (4); and the lower connecting pipe (5) is fixedly installed on the lower side of the transformer body (1); A heat dissipation water pipe (6) is provided between adjacent heat dissipation fins on the front and rear sides of the transformer body (1); the lower end of the heat dissipation water pipe (6) is fixedly connected to the lower connecting pipe (5), and the upper end of the heat dissipation water pipe (6) is fixedly connected to the upper connecting pipe (7) above the transformer body (1); one side of the upper connecting pipe (7) is fixedly connected to one end of a return water pipe (8), and the other end of the return water pipe (8) extends into the underground water reservoir (2); A side bracket (9) is respectively provided on the front and rear sides of the transformer body (1), and a spray unit (10) is respectively provided on the mutually adjacent sides of the two side brackets (9); the two spray units (10) are both connected to a secondary water supply pipe (11), and the secondary water supply pipe (11) is connected to the return water pipe (8) through a distribution unit (12), and the distribution unit (12) can control the flow direction of water in the return water pipe (8).

2. The spray fire extinguishing system for transformer according to claim 1, characterized in that: The distribution unit (12) comprises a three-way joint (121), the three-way joint (121) being mounted on the water return pipe (8), and the remaining interface after the three-way joint (121) is connected to the water return pipe (8) is connected to the secondary water supply pipe (11) via a water return branch pipe (122); a first solenoid valve (123) is mounted on the water return pipe (8), and the first solenoid valve (123) is located at any position between the drainage end of the water return pipe (8) and the three-way joint (121); and a second solenoid valve (124) is mounted on the water return branch pipe (122).

3. The spray fire extinguishing system for transformer according to claim 2, characterized in that: A booster water pump (13) is provided between the return water branch pipe (122) and the secondary water supply pipe (11); the ends of the return water branch pipe (122) and the secondary water supply pipe (11) close to each other are respectively connected to the input end and the output end of the booster water pump (13); the booster water pump (13) is fixedly installed on the top of the underground water storage tank (2) via a pump body bracket (14).

4. The spray fire extinguishing system for transformer according to any one of claims 1 to 3, characterized in that: The upper connecting pipe (7), the lower connecting pipe (5) and the heat dissipation water pipe (6) are all metal flat pipes, and the specifications of the upper connecting pipe (7) and the lower connecting pipe (5) are larger than the specifications of the heat dissipation water pipe (6).

5. The spray fire extinguishing system for transformer according to any one of claims 1 to 3, characterized in that: The spray unit (10) comprises a water supply riser (101) connected to the secondary water supply pipe (11); the water supply riser (101) is vertically mounted at a middle position of the side bracket (9) close to the transformer body (1); the water supply riser (101) is symmetrically provided with a plurality of water supply branch pipes (102) along one opposite side in the length direction of the transformer body (1); and a plurality of atomizing nozzles (103) are evenly mounted on the water supply branch pipe (102) close to the transformer body (1) on one side.

6. The spray fire extinguishing system for transformer according to claim 1, characterized in that: The two ends of the top beams of the two side brackets (9) are connected respectively by two horizontal cross bars (15); two installation cross bars (16) parallel to the length direction of the transformer body (1) are installed between the two horizontal cross bars (15); and a plurality of temperature sensors (17) are installed on the mutually adjacent sides of the two installation cross bars (16).

7. The spray fire extinguishing system for transformer according to claim 6, characterized in that: The temperature sensors (17) on the two mounting cross bars (16) are arranged in a staggered manner.

8. The spray fire extinguishing system for transformer according to claim 6 or 7, characterized in that: An inverted U-shaped bracket (18) is provided directly above the transformer body (1), the lower end of the inverted U-shaped bracket (18) is fixedly mounted on the two horizontal cross bars (15), and a smoke sensor (19) is mounted on the lower side of the top of the inverted U-shaped bracket (18).

Images