Intelligent cooling device for transformer

Abstract

The utility model relates to the technical field of cooling equipment, in particular to an intelligent cooling device for a transformer, which comprises a transformer radiator, a cooling main machine and a spraying mechanism arranged around the transformer radiator, and the cooling main machine comprises an intelligent control cabinet, a water softening device, a filter, a water tank and a water supply component. The water softening device, the filter and the water tank are sequentially communicated through pipelines, and the water supply assembly is communicated with the water tank. The spraying mechanism comprises a support, a high-pressure pipeline and spraying assemblies, the high-pressure pipeline is communicated with the water supply assembly, the multiple spraying assemblies are arranged on the support at intervals, each spraying assembly comprises a spraying pipeline and multiple spraying nozzles arranged on the spraying pipeline at intervals, the spraying pipeline is communicated with the high-pressure pipeline, and the spraying nozzles are communicated with the high-pressure pipeline. The spraying assemblies of the two oppositely-arranged spraying mechanisms are arranged in a staggered mode. According to the utility model, the radiating fins of the transformer radiator can be effectively prevented from generating incrustation and the phenomenon that the spray nozzle is blocked can be avoided; and meanwhile, water vapor dissipation after heat absorption is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling equipment, in particular to an intelligent cooling device for a transformer. Background Art

[0002] Transformers are a type of electrical equipment widely used in power systems, industrial production, and household electricity, and are an indispensable part of modern electrical equipment. Large transformers in high-voltage substations generate a lot of heat during use, especially in summer when the ambient temperature is high. However, in order to ensure the lives of citizens and the production of enterprises, most of the main transformers in substations are fully loaded, which causes the transformer to overheat. If the temperature exceeds the specified limit, the transformer will start the protection program and automatically trip, affecting the normal operation of the power system. Therefore, the stable operation of the transformer is related to the stability of the entire power grid.

[0003] The transformer temperature is too high and the heat dissipation is not timely, so the transformer needs to be cooled down. The traditional cooling measures for the transformer are to cut off the power supply to reduce the load, or to blow air or flush the transformer to cool it down. However, they all require manual operation, and it is impossible to achieve uniform cooling. In addition, the work intensity is high, which is not suitable for long-term use and large-scale promotion. There is also a great risk of electric shock when flushing the live transformer with water, and the safety risk is high. Therefore, the existing technology mostly uses high-pressure fine water mist to cool the transformer. For example, the Chinese utility model patent with the authorization announcement of CN221079775U discloses a high-pressure fine water mist cooling device for transformers. The patent achieves the effect of cooling the transformer by using high-pressure fine water mist technology. However, there are the following shortcomings: the water quality of the water mist sprayed on the transformer is too hard, and the water mist is sprayed on the heat sink of the transformer radiator under high temperature, which is easy to produce scale on the heat sink, affecting the normal operation of the transformer radiator, and it is also easy to cause the spray nozzle to be blocked; and the arrangement of the nozzle faces the transformer body, which has a safety hazard, and does not use water vapor to escape, which affects the cooling effect of the transformer. Summary of the invention

[0004] The utility model provides an intelligent transformer cooling device to solve the problems that scaling is easy to form on the heat sink of the transformer radiator, the spray nozzle is easy to be blocked, and the water vapor is not effectively dissipated during the cooling process of the transformer by the existing cooling equipment. The utility model can effectively avoid scaling of the heat sink of the transformer radiator and blockage of the spray nozzle; at the same time, it is also beneficial for the water vapor after absorbing heat to dissipate, thereby improving the cooling effect of the transformer.

[0005] To achieve the above object, the technical solution of the present utility model is: an intelligent transformer cooling device, including a transformer radiator, further including a cooling host and a spraying mechanism arranged around the transformer radiator. The cooling host includes an intelligent control cabinet, a softened water device, a filter, a water tank and a water supply component. The softened water device, the filter and the water tank are sequentially connected and communicated through pipelines, and the water supply component is connected and communicated with the water tank. The intelligent control cabinet can control the start and stop of the cooling host by collecting the oil temperature signal of the transformer, realizing precise and intelligent control. The softened water device softens the water sprayed onto the transformer radiator to avoid scale formation on the radiator fins of the transformer radiator and prevent blockage of the spray nozzles. The filter filters the water flowing into the water tank, and the softened and filtered water can be led to the spraying mechanism through the water supply component.

[0006] The spraying mechanism includes a bracket, a high-pressure pipeline and a spraying component. The high-pressure pipeline is connected and communicated with the water supply component. A plurality of the spraying components are arranged at intervals on the bracket. The spraying component includes a spraying pipeline and a plurality of spray nozzles arranged at intervals on the spraying pipeline. The spraying pipeline is connected and communicated with the high-pressure pipeline. The spraying components of the two relatively arranged spraying mechanisms are arranged in a staggered manner. The water supply component leads water to the spraying pipeline through the high-pressure pipeline, so that the spray nozzles spray fine water mist onto the transformer radiator, achieving the effect of cooling the transformer radiator.

[0007] Further, the water supply component includes a water outlet pipeline, a constant-pressure water supply device and a water delivery pipeline. One end of the water outlet pipeline is connected and communicated with the water tank, and a valve is arranged on the water outlet pipeline. The valve plays a role in opening and closing the water outlet pipeline.

[0008] Further, the inlet end and the outlet end of the constant-pressure water supply device are respectively connected and communicated with the water outlet pipeline and the water delivery pipeline. A high-pressure pump group and a pressure regulating overflow valve are arranged on the water delivery pipeline. The constant-pressure water supply device supplies water to the water delivery pipeline at a constant pressure. The high-pressure pump group is used to pressurize the water to the working pressure, and the pressure regulating overflow valve can adjust the working pressure of the high-pressure pump group.

[0009] Further, a water distribution branch pipe is connected to one end of the high-pressure pipeline. The water distribution branch pipe is connected and communicated with the water delivery pipeline. A partition control valve and a pressure transmitter are arranged on the water distribution branch pipe. The water can be led to the spraying pipeline in sequence through the water delivery pipeline, the water distribution branch pipe and the high-pressure pipeline. The partition control valve plays a role in controlling the opening and closing of the water distribution branch pipe. The pressure transmitter is used to detect the pressure of the water flowing from the water distribution branch pipe to the high-pressure pipeline and output a signal to be transmitted to the intelligent control cabinet.

[0010] Further, a plurality of pipe clamps are arranged at intervals on the bracket. The spraying pipeline is fixed to the bracket through the pipe clamps. The spraying pipeline can be fixed to the bracket through the pipe clamps.

[0011] Furthermore, the spray nozzle corresponds to the gap between the heat dissipation fins of the transformer radiator. The spray nozzle sprays fine water mist into the gap between the heat dissipation fins of the transformer radiator to facilitate the outward diffusion of the water vapor after heat absorption.

[0012] Through the above technical solution, the beneficial effects of the present utility model are as follows:

[0013] The structure of the present utility model is reasonable and has good use effects. By softening the water before spraying fine water mist on the transformer radiator, scale formation on the heat dissipation fins of the transformer radiator can be avoided, and at the same time, the phenomenon of blockage of the spray nozzle can be avoided; at the same time, through the direction of the fine water mist sprayed by the spray nozzle towards the transformer radiator, the cooling effect on the transformer radiator is better, and it is more conducive to dissipating the water vapor after heat absorption.

[0014] In the present utility model, after the water is first passed through the water softening device for softening by the water softening device, and then the softened water is passed into the water tank, the calcium and magnesium ions in the water can be prevented from scaling on the heat dissipation fins of the transformer radiator, ensuring the normal operation of the transformer radiator. At the same time, the phenomenon of blockage of the spray nozzle can also be avoided, preventing the influence on the effect of the fine water mist sprayed by the spray nozzle; at the same time, the softened water is filtered by the filter, further avoiding scale formation on the heat dissipation fins of the transformer radiator and avoiding blockage of the spray nozzle.

[0015] The spray components of the two opposite spray mechanisms of the present utility model are installed in a staggered manner, that is, the spray nozzles of the opposite spray mechanisms spray fine water mist in a staggered manner, and at the same time, the spray nozzles spray fine water mist into the gap between the heat dissipation fins of the transformer radiator, achieving the effect of facilitating the outward diffusion of the water vapor after heat absorption, improving the cooling effect on the transformer radiator, and thus improving the cooling effect on the transformer. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of an intelligent cooling device for a transformer of the present utility model (excluding the transformer radiator);

[0017] Figure 2 is a schematic structural diagram of the cooling main body of the present utility model Figure 1 ;

[0018] Figure 3 is a schematic structural diagram of the cooling main body of the present utility model Figure 2 ;

[0019] Figure 4 is a schematic structural diagram of the spray mechanism of the present utility model;

[0020] Figure 5 is a schematic structural diagram of the working state of the present utility model Figure 1 (excluding the cooling main body);

[0021] Figure 6 is a schematic diagram of the structure of the present utility model in the usage state Figure 2 (excluding the cooling main unit);

[0022] Figure 7 is a schematic diagram of the structure of the present utility model in the usage state Figure 3 (excluding the cooling main unit).

[0023] The reference numerals in the drawings are: 1 is an intelligent control cabinet, 2 is a softened water device, 3 is a filter, 4 is a water tank, 5 is a water outlet pipe, 6 is a valve, 7 is a constant pressure water supply device, 8 is a water delivery pipe, 9 is a high-pressure pump group, 10 is a pressure regulating overflow valve, 11 is a water distribution branch pipe, 12 is a partition control valve, 13 is a pressure transmitter, 14 is a bracket, 15 is a high-pressure pipe, 16 is a spray pipe, 17 is a spray nozzle, 18 is a pipe clamp, and 19 is a transformer radiator. Specific embodiments

[0024] The present utility model will be further described below in conjunction with the drawings and specific embodiments:

[0025] As Figures 1 to 7 shown, a transformer intelligent cooling device includes a transformer radiator 19, and further includes a cooling main unit and a spray mechanism arranged around the transformer radiator 19. The cooling main unit includes an intelligent control cabinet 1, a softened water device 2, a filter 3, a water tank 4 and a water supply assembly. The softened water device 2, the filter 3 and the water tank 4 are sequentially connected through pipelines, and the water supply assembly is connected to the water tank 4. In this embodiment, the number of spray mechanisms is two and they are relatively installed on both sides of the transformer radiator 19. The cooling main unit further includes a support frame. Among them, the intelligent control cabinet 1 and the water tank 4 are both installed on the upper part of the support frame, and the support frame supports the intelligent control cabinet 1 and the water tank 4. Among them, the softened water device 2 adopts a 2T / H softened water equipment of Henan Tianyu Water Treatment Engineering Co., Ltd. The softened water device 2 is externally connected to a water source through a pipeline to supply water to the softened water device 2. The softened water device 2 softens the water, thereby avoiding scale formation on the heat dissipation fins of the transformer radiator 19 and avoiding blockage of the spray nozzles 17. The softened water is transported to the filter 3 through a pipeline, and after being filtered by the filter 3, it is transported to the water tank 4, and the water tank 4 stores the water; the intelligent control cabinet 1 can collect the oil temperature signal of the transformer and control the start and stop of the cooling main unit to achieve precise and intelligent control.

[0026] The spray mechanism includes a bracket 14, a high-pressure pipeline 15 and a spray assembly. The high-pressure pipeline 15 is communicated with the water supply assembly. A plurality of the spray assemblies are arranged at intervals on the bracket 14. The spray assembly includes a spray pipeline 16 and a plurality of spray nozzles 17 arranged at intervals on the spray pipeline 16. The spray pipeline 16 is communicated with the high-pressure pipeline 15. The spray assemblies of two relatively arranged spray mechanisms are arranged in a staggered manner. In this embodiment, the softened water in the water tank 4 is transported to the high-pressure pipeline 15 through the water supply assembly, and the high-pressure softened water is transported from the high-pressure pipeline 15 to the spray pipeline 16, and then fine water mist is sprayed from the spray nozzles 17 to the transformer radiator 19. The spray assembly includes five spray pipelines 16 fixedly arranged on the bracket 14 in an up-and-down arrangement. Five spray nozzles 17 are installed on each spray pipeline 16. The number of the spray pipelines 16 and the number of the spray nozzles 17 on the spray pipelines 16 can both be adjusted according to actual requirements. The spray nozzles 17 of two spray mechanisms are installed in a staggered array up and down along both ends of the fins of the transformer radiator 19 in parallel, that is, there is a vertical height difference ΔH between the spray nozzles 17 corresponding to both ends of the fins of the transformer radiator 19. In this embodiment, ΔH = 200 mm. A certain distance L is maintained between the spray nozzles 17 and the fins of the transformer radiator 19 to ensure that the water mist is fully atomized and covers the transformer radiator 19 with the largest area. The distance L is determined according to the characteristics of the spray nozzles 17. In this embodiment, the distance L between the spray nozzles 17 and the fins of the transformer radiator 19 is 200 mm, so that the mist shapes of the spray nozzles 17 overlap, and it is ensured that the gaps between the fins of the outermost transformer radiator 19 are covered by the fine water mist sprayed from the spray nozzles 17. The bracket 14 is fixed on the ground at the bottom of the transformer oil sump through expansion bolts.

[0027] The water supply assembly includes a water outlet pipeline 5, a constant-pressure water supply device 7 and a water transmission pipeline 8. One end of the water outlet pipeline 5 is communicated with the water tank 4, and a valve 6 is arranged on the water outlet pipeline 5. In this embodiment, the softened water in the water tank 4 is transported to the water transmission pipeline 8 through the water outlet pipeline 5. The valve 6 is a manual valve and is normally open. When the cooling host needs to be overhauled, the valve 6 is closed.

[0028] The inlet end and the outlet end of the constant-pressure water supply device 7 are respectively communicated with the water outlet pipeline 5 and the water transmission pipeline 8, and a high-pressure pump group 9 and a pressure regulating overflow valve 10 are arranged on the water transmission pipeline 8. In this embodiment, the constant-pressure water supply device 7 can supply water to the water transmission pipeline 8 at a constant pressure. The main equipment of the constant-pressure water supply device 7 is a centrifugal pump, and the TPH40-125 centrifugal pump of Shanghai Pacific Pump (Group) Co., Ltd. is adopted. The high-pressure pump group 9 is used to pressurize the water to the working pressure, and the pressure regulating overflow valve 10 is used to adjust the working pressure of the high-pressure pump group.

[0029] One end of the high-pressure pipeline 15 is communicated with a water delivery branch pipe 11, the water delivery branch pipe 11 is communicated with the water delivery pipeline 8, and a partition control valve 12 and a pressure transmitter 13 are arranged on the water delivery branch pipe 11. In this embodiment, softened water enters the spray pipeline 16 through the water delivery pipeline 9, the water delivery branch pipe 11 and the high-pressure pipeline 15, and then fine water mist is sprayed by the spray nozzle 17 onto the transformer radiator 19. The partition control valve 12 is used to control the opening and closing of the water delivery branch pipe 11; when a failure causes the pressure of the softened water delivered from the water delivery branch pipe 11 to the high-pressure pipeline 15 not to meet the requirements, the pressure transmitter 13 outputs a signal to the intelligent control cabinet 1. The intelligent control cabinet can control the high-pressure pump group 9 to stop working and feedback relevant information to the intelligent control cabinet to notify the management staff for disposal.

[0030] A plurality of pipe clamps 18 are arranged on the bracket 14 at intervals, and the spray pipeline 16 is fixed on the bracket 14 through the pipe clamps 18. In this embodiment, each spray pipeline 16 is fixed on the bracket 14 by two pipe clamps 18.

[0031] The spray nozzle 17 corresponds to the gap between the heat dissipation fins of the transformer radiator 19, and the spray nozzle 17 sprays fine water mist into the gap between the heat dissipation fins of the transformer radiator 19 to facilitate the outward dissipation of the water vapor after heat absorption.

[0032] The working principle of the present utility model is as follows: The softened water device 2 supplies water through an external pipeline connected to a water source. The softened water device 2 softens the water, and then the softened water is transported to the filter 3 through a pipeline. After being filtered by the filter 3, the softened water is transported to the water tank 4 through a pipeline. When it is necessary to cool the transformer and the intelligent control cabinet 1 starts the high-pressure pump group 9 to work, the softened water in the water tank 4 enters the water delivery pipeline 8 through the constant pressure water supply device 7. The high-pressure pump group 9 pressurizes the softened water to the working pressure, and then sprays fine water mist onto the transformer radiator through two spray mechanisms, that is, the softened water enters the water delivery branch pipe 11 through the water delivery pipeline 8, passes through the partition control valve 12 and is transported to the high-pressure pipeline 15, and then is transported to each spray pipeline 16 by the high-pressure pipeline 15. Finally, the spray nozzle 17 sprays fine water mist into the gap between the heat dissipation fins of the transformer radiator 19 to achieve the purpose of cooling the transformer radiator 19.

[0033] The above-described embodiments are only the preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, any equivalent changes or modifications made to the technical solutions described within the scope of the utility model patent shall be included within the scope of the utility model patent application.

Claims

1. A transformer intelligent cooling device, comprising a transformer radiator (19), characterized in that: It also includes a cooling host and a spray mechanism arranged around the transformer radiator (19), the cooling host including an intelligent control cabinet (1), a softening water device (2), a filter (3), a water tank (4) and a water supply component, the softening water device (2), the filter (3) and the water tank (4) are connected in sequence through pipes, and the water supply component is connected to the water tank (4); The spray mechanism comprises a bracket (14), a high-pressure pipeline (15) and a spray assembly, wherein the high-pressure pipeline (15) is connected to the water supply assembly, a plurality of the spray assemblies are arranged at intervals on the bracket (14), and the spray assembly comprises a spray pipeline (16) and a plurality of spray nozzles (17) arranged at intervals on the spray pipeline (16), the spray pipeline (16) is connected to the high-pressure pipeline (15), and the spray assemblies of two spray mechanisms arranged opposite to each other are arranged in a staggered manner.

2. The intelligent transformer cooling device according to claim 1, characterized in that: The water supply assembly comprises a water outlet pipe (5), a constant pressure water supply device (7) and a water delivery pipe (8); one end of the water outlet pipe (5) is connected to the water tank (4); and a valve (6) is provided on the water outlet pipe (5).

3. The intelligent transformer cooling device according to claim 2, characterized in that: The water inlet and the water outlet of the constant pressure water supply device (7) are respectively connected to the water outlet pipeline (5) and the water delivery pipeline (8), and the water delivery pipeline (8) is provided with a high-pressure pump group (9) and a pressure regulating overflow valve (10).

4. The intelligent transformer cooling device according to claim 3, characterized in that: One end of the high-pressure pipeline (15) is connected to a water supply branch (11), the water supply branch (11) is connected to the water supply pipeline (8), and a partition control valve (12) and a pressure transmitter (13) are provided on the water supply branch (11).

5. The intelligent transformer cooling device according to claim 1, characterized in that: A plurality of pipe clamps (18) are arranged at intervals on the bracket (14), and the spray pipe (16) is fixed to the bracket (14) via the pipe clamps (18).

6. The intelligent transformer cooling device according to claim 1, characterized in that: The spray nozzle (17) corresponds to the gap between the cooling fins of the transformer radiator (19).

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