Cooling device for main transformer of transformer substation

Abstract

The utility model relates to the technical field of main transformer cooling, in particular to a transformer substation main transformer cooling device which comprises a first water pump, a water purification device, a refrigerating device and a fog gun machine, the water outlet end of the first pump is communicated with the water inlet end of the water purification device, the water outlet end of the water purification device is communicated with the water inlet end of the refrigerating device, and the water outlet end of the refrigerating device is communicated with the water outlet end of the fog gun machine. The problems that when the fog gun machine is connected with municipal water for cooling, water mist is attached to a main transformer, so that the main transformer is rusted and scaled, and when an axial flow fan is adopted for cooling, the cooling efficiency is low, the loading capacity of the main transformer is seriously affected, and the service life of the main transformer is prolonged are solved. And meanwhile, huge fault hidden dangers are caused to electric power production.

Description

Technical Field

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

[0002] The main transformer, i.e. the main transformer, plays a very important role in the substation. Whether the main transformer can operate safely is directly related to the safe operation of the substation. Once the main transformer fails, it may cause the main transformer switch to trip, causing the busbar to lose power and load, affecting the user's power consumption, and bringing many inconveniences to social production and people's lives. In severe cases, explosions and fires may occur, threatening the safety of personnel and the safe operation of other equipment in the substation.

[0003] The temperature is high in summer, and the main transformer of the substation is in full-load operation for a long time. In addition, the insulation performance of the main transformer of the substation decreases due to aging, causing the upper oil temperature of the main transformer of the substation to often exceed 80℃.

[0004] In order to ensure the safe operation of the main transformer of the substation, auxiliary cooling must be carried out for the main transformer of the substation with the upper oil temperature exceeding 80°C. The auxiliary cooling methods currently used mainly include: axial flow fan cooling and fog cannon cooling.

[0005] A mist cannon is used to connect municipal water for cooling. The water contains calcium ions, magnesium ions, sodium ions, potassium ions, carbonate ions and chloride ions. The water mist adheres to the main transformer, which can easily cause corrosion and scaling of the main transformer.

[0006] The use of axial flow fans for cooling has low cooling efficiency and cannot fully meet the demand for rapid cooling of the transformer, which seriously affects the load capacity of the main transformer and creates huge hidden dangers of failure in power production.

[0007] In summary, there is an urgent need for a cooling device for a main transformer of a power station, which can meet the requirements of rapid cooling of the main transformer and prevent rust and fouling of the main transformer. Utility Model Content

[0008] The purpose of the utility model is to provide a substation main transformer cooling device, which has the advantages of meeting the rapid cooling of the main transformer and preventing the main transformer from rusting and scaling, so as to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides a substation main transformer cooling device, including a first water pump, a water purification device, a refrigeration device and a fog cannon, the water outlet end of the first pump is connected to the water inlet end of the water purification device, the water outlet end of the water purification device is connected to the water inlet end of the refrigeration device, and the water outlet end of the refrigeration device is connected to the water inlet end of the fog cannon.

[0010] The first water pump provides power to pump municipal water into the water purification device, and the calcium ions, magnesium ions, sodium ions, potassium ions, carbonate ions and chloride ions in the water are removed through the purification device. The purified water enters the refrigeration device for cooling, and then the main transformer is cooled by spraying water mist through the fog cannon. This solves the problem of using fog cannon to connect municipal water for cooling, the water mist adhering to the main transformer easily causing rust and scaling of the main transformer, and the problem of using axial flow fans for cooling, the low cooling efficiency seriously affects the load capacity of the main transformer, and at the same time causes huge hidden dangers of failure in power production.

[0011] Preferably, a solenoid valve is provided on the connecting pipeline between the first water pump and the water purification device.

[0012] Preferably, a second water pump is provided on the connecting pipeline between the refrigeration device and the fog cannon.

[0013] Preferably, the refrigeration device includes a water tank and a refrigerator, and the refrigerator is in circulation communication with the water tank; the water outlet of the water purification device is in communication with the water inlet of the water tank, and the water outlet of the water tank is in communication with the water inlet of the second water pump.

[0014] Preferably, it also includes a fan, and the air outlet of the fan is connected to the air inlet of the fog cannon by an air duct.

[0015] Preferably, the air duct includes a straight pipe and a curved pipe, and the air outlet of the fan, the curved pipe, the straight pipe and the air inlet of the fog cannon are connected in sequence by flanges.

[0016] Preferably, the first water pump is a self-priming pump.

[0017] Preferably, the second water pump is a high-pressure plunger pump.

[0018] Preferably, the solenoid valve is a direct-acting solenoid valve.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model removes calcium ions, magnesium ions, sodium ions, potassium ions, carbonate ions and chloride ions in water through a purification device. The purified water enters a refrigeration device for cooling, and then a mist cannon sprays water mist to cool the main transformer, which can effectively prevent the main transformer from rusting and achieve the purpose of quickly cooling the main transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] In the figure: 1. first water pump; 2. water purification device; 3. refrigeration device; 3a. water tank; 3b. refrigerator; 4. fog cannon; 5. solenoid valve; 6. second water pump; 7. air duct; 7a. straight pipe; 7b. bent pipe; 8. fan. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1 In this embodiment, a substation main transformer cooling device includes a first water pump 1, a water purification device 2, a refrigeration device 3 and a fog cannon 4, the water outlet end of the first pump 1 is connected to the water inlet end of the water purification device 2, the water outlet end of the water purification device 2 is connected to the water inlet end of the refrigeration device 3, and the water outlet end of the refrigeration device 3 is connected to the water inlet end of the fog cannon 4. The first water pump 1 provides power to pump municipal water into the water purification device 2, and the calcium ions, magnesium ions, sodium ions, potassium ions, carbonate ions and chloride ions in the water are removed by the purification device 2. The purified pure water enters the refrigeration device 3 for cooling, and the cooled pure water is then sprayed with water mist by the fog cannon 4 to cool the main transformer, which solves the problem that the fog cannon 4 is used to connect municipal water for cooling, and the water mist adheres to the main transformer, which easily causes rust and scaling of the main transformer, and the axial flow fan is used for cooling, and the cooling efficiency is low, which seriously affects the load capacity of the main transformer and causes huge hidden dangers of failure to power production.

[0026] Example 2

[0027] See also Figure 1 In this embodiment, a solenoid valve 5 is provided on the connecting pipeline between the first water pump 1 and the water purification device 2. The solenoid valve 5 is a direct-acting solenoid valve. When the power is on, the electromagnetic coil generates an electromagnetic force to lift the closing member from the valve seat, and the valve opens; when the power is off, the electromagnetic force disappears, and the spring presses the closing member onto the valve seat, and the valve closes, thereby realizing the on-off control of the solenoid valve, and being able to remotely control the on-off of the pipeline.

[0028] Example 3

[0029] See also Figure 1In this embodiment, a second water pump 6 is provided on the connecting pipeline between the refrigeration device 3 and the fog cannon 4. The refrigeration device 3 includes a water tank 3a and a refrigerator 3b. The refrigerator 3b is circulated and connected with the water tank 3a; the water outlet end of the water purification device 2 is connected with the water inlet end of the water tank 3a, and the water outlet end of the water tank 3a is connected with the water inlet end of the second water pump 6. The purified water enters the water tank 3a. After the water in the water tank 3a is circulated and cooled by the refrigerator 3b, the water in the water tank 3a is pumped into the fog cannon 4 by the second water pump 6 and sprayed out by the fog cannon 4 to achieve rapid cooling of the main transformer.

[0030] Example 4

[0031] See also Figure 1 In this embodiment, a fan 8 is also included. The air outlet of the fan 8 is connected to the air inlet of the fog cannon 4 by an air duct 7. The air duct 7 includes a straight pipe 7a and a curved pipe 7b. The air inlet of the fog cannon 4, the straight pipe 7a, the curved pipe 7b and the air outlet of the fan 8 are connected by flanges in sequence. The fan 8 can increase the flow speed of the water mist, thereby improving the cooling efficiency.

[0032] Example 5

[0033] See also Figure 1 In this embodiment, the first water pump 1 is a self-priming pump, and the second water pump 6 is a high-pressure plunger pump.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A substation main transformer cooling device, characterized in that: It includes a first water pump, a water purification device, a refrigeration device and a fog cannon, the water outlet of the first water pump is connected to the water inlet of the water purification device, the water outlet of the water purification device is connected to the water inlet of the refrigeration device, and the water outlet of the refrigeration device is connected to the water inlet of the fog cannon; an electromagnetic valve is provided on the connecting pipeline between the first water pump and the water purification device; a second water pump is provided on the connecting pipeline between the refrigeration device and the fog cannon; the refrigeration device includes a water tank and a refrigerator, and the refrigerator is circulated with the water tank; the water outlet of the water purification device is connected to the water inlet of the water tank, and the water outlet of the water tank is connected to the water inlet of the second water pump.

2. A substation main transformer cooling device according to claim 1, characterized in that: It also includes a fan, and the air outlet of the fan is connected to the air inlet of the fog cannon by an air duct.

3. A substation main transformer cooling device according to claim 2, characterized in that: The air duct includes a straight pipe and a curved pipe, and the air outlet of the fan, the curved pipe, the straight pipe and the air inlet of the fog cannon are connected in sequence by flanges.

4. A substation main transformer cooling device according to claim 1, characterized in that: The first water pump is a self-priming pump.

5. The substation main transformer cooling device according to claim 1, characterized in that: The second water pump is a high-pressure plunger pump.

6. A substation main transformer cooling device according to claim 1, characterized in that: The solenoid valve is a direct-acting solenoid valve.

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