Hydropower station transformer oil circulating device

Abstract

The utility model relates to the technical field of hydropower station transformers, in particular to a hydropower station transformer oil liquid circulation device which comprises a first circulation box, a second circulation box is arranged at the bottom end of the first circulation box, a third circulation box is arranged at the bottom end of the second circulation box, and a circulation pump is fixedly installed on the left side of the bottom end of the third circulation box. The first circulating box, the second circulating box, the third circulating box, the capillary tube and the heat conducting plate are used in cooperation, the temperature sensor detects the water temperature in the first circulating box, and if the water temperature is higher than the oil temperature of the transformer, the transformer oil is fed into the second circulating box for circulating cooling; and if the water temperature in the first circulating box is lower than the oil temperature of the transformer, the transformer oil is fed into the first circulating box again for circulating cooling, and according to the mode, the entering position of the transformer oil can be intelligently adjusted during cooling, so that the temperature cooling efficiency of the transformer oil is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers for hydropower stations, in particular to an oil circulation device for transformers for hydropower stations. Background Art

[0002] The oil circulation device of the hydropower station transformer is an important component for maintaining the normal operation of the transformer and ensuring its performance. The system cools the transformer by circulating insulating oil and also contributes to the stability of the insulation system.

[0003] For example, a transformer oil tank for accelerating heat dissipation disclosed in the authorization announcement number CN216849568U includes a transformer oil tank, a top plate is provided on the top of the transformer oil tank, heat sinks are provided around it, a winding is provided in the transformer oil tank, a terminal is provided on the top plate, the terminal is inserted into the transformer oil tank, and a heat dissipation plate is provided on the upper part of the transformer oil tank between the winding core and the terminal. After adopting the above technical solution, the beneficial effect of the utility model is: cold air or wind is introduced into the heat dissipation coil to take away the heat in the heat dissipation coil, thereby cooling the oil on the top of the transformer oil tank.

[0004] The above device has a simple structure and reasonable design, can meet the needs of users, and has great promotion value;

[0005] However, the above patent has the following shortcomings:

[0006] Although cold air or wind is introduced into the heat dissipation coil of the above-mentioned transformer oil tank to take away the heat in the heat dissipation coil, thereby cooling the oil on the top of the transformer oil tank, the efficiency of air cooling is low. If water cooling is used for cooling, the temperature of the water is difficult to drop quickly after the water is cooled once, and the cooling efficiency is limited during the secondary circulation. Utility Model Content

[0007] The utility model aims to provide an oil circulation device for a transformer of a hydropower station to solve the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A transformer oil circulation device for a hydropower station, comprising:

[0010] A first circulation box, a second circulation box is disposed at the bottom end of the first circulation box, a third circulation box is disposed at the bottom end of the second circulation box, and a circulation pump is fixedly installed on the left side of the bottom end of the third circulation box;

[0011] The first circulation box, the second circulation box and the third circulation box are connected to the circulation pump through an oil inlet pipe, and the ends of the first circulation box, the second circulation box and the third circulation box away from the oil inlet pipe are connected to an oil return pipe;

[0012] The first circulation box, the second circulation box and the third circulation box are all provided with a heat dissipation mechanism inside, and the heat dissipation mechanism includes a heat conduction plate, a capillary tube and a heat dissipation chamber.

[0013] Preferably, the oil inlet pipe and the oil return pipe are located in the first circulation box, the second circulation box and the third circulation box, and one end thereof is connected through a capillary tube. The first circulation box, the second circulation box and the third circulation box are provided with a heat dissipation chamber. A plurality of heat conduction plates are sequentially arranged in the three heat dissipation chambers from top to bottom, and the capillary tube is sleeved with the heat conduction plate.

[0014] Preferably, a plurality of ceramic plates are fixedly mounted on the outside of the first circulation box, the second circulation box and the third circulation box on both sides away from the oil inlet pipe and the oil return pipe, and a heat dissipation cover is arranged outside the ceramic plate of the first circulation box, the second circulation box and the third circulation box, and a fan is arranged inside the heat dissipation cover on one side close to the ceramic plate;

[0015] Preferably, the top of the first circulation box, the second circulation box and the third circulation box near the circulation pump are all connected to a temperature sensor, and solenoid valves are provided between the oil inlet pipe and the oil return pipe and the first circulation box, the second circulation box and the third circulation box;

[0016] Preferably, the first circulation box, the second circulation box and the third circulation box are connected to a liquid level sensor at the middle of the side away from the temperature sensor, a water inlet pipe is arranged above the liquid level sensor, and a water outlet pipe is arranged below the liquid level sensor;

[0017] Preferably, a plurality of dust covers are sequentially installed on the outer side of the heat dissipation cover from top to bottom, and the number of the dust covers is the same as that of the fans and they are opposite to each other in pairs.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. A transformer oil circulation device for a hydropower station is used in conjunction with a first circulation box, a second circulation box, a third circulation box, a capillary tube and a heat conduction plate. The water temperature inside the first circulation box is detected by a temperature sensor. If the water temperature is higher than the transformer oil temperature, the transformer oil is sent to the second circulation box for circulation cooling. If the water temperature inside the first circulation box is lower than the transformer oil temperature, the transformer oil is sent to the first circulation box again for circulation cooling. According to the above method, during cooling, the position where the transformer oil enters can be intelligently adjusted, so that the temperature cooling efficiency of the transformer oil is higher.

[0020] 2. This oil circulation device for a transformer in a hydropower station is used in combination with a heat dissipation cover, a fan, a temperature sensor and a ceramic plate. When the water temperature in the first circulation box absorbs heat, it is monitored by the temperature sensor, and then the fan at the corresponding position is controlled to start. After the fan is started, the water temperature inside the first circulation box is lowered, and the position with normal water temperature does not need to be cooled by the fan, which can save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall main structure of the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of the heat dissipation cover of the utility model;

[0023] Figure 3 This is a schematic diagram of the heat dissipation chamber structure of the utility model;

[0024] Figure 4 For the utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0025] Figure 5 For the utility model Figure 3 Enlarged schematic diagram of point B in the middle.

[0026] In the figure: 1. first circulation box; 2. second circulation box; 3. third circulation box; 4. circulation pump; 5. oil inlet pipe; 6. oil return pipe; 7. heat dissipation mechanism; 701. heat conduction plate; 702. capillary tube; 703. heat dissipation chamber; 8. ceramic plate; 9. heat dissipation cover; 10. fan; 11. temperature sensor; 12. solenoid valve; 13. liquid level sensor; 14. water inlet pipe; 15. water outlet pipe; 16. dust cover. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figure 1-5 As shown, a technical solution provided by the utility model:

[0029] A transformer oil circulation device for a hydropower station comprises a first circulation box 1, a second circulation box 2 is arranged at the bottom end of the first circulation box 1, a third circulation box 3 is arranged at the bottom end of the second circulation box 2, and a circulation pump 4 is fixedly installed on the left side of the bottom end of the third circulation box 3; the first circulation box 1, the second circulation box 2 and the third circulation box 3 are connected to the circulation pump 4 through an oil inlet pipe 5, and the ends of the first circulation box 1, the second circulation box 2 and the third circulation box 3 away from the oil inlet pipe 5 are connected to an oil return pipe 6; the first circulation box 1, the second circulation box 2 and the third circulation box 3 are connected to the oil return pipe 6; the first circulation box 1, the second circulation box 2 and the third circulation box 3 are connected to the oil return pipe 6 The circulation boxes 3 are all provided with heat dissipation mechanisms 7, which include heat conduction plates 701, capillaries 702 and heat dissipation chambers 703; the oil inlet pipe 5 and the oil return pipe 6 are located in the first circulation box 1, the second circulation box 2 and the third circulation box 3, and one end thereof is connected through the capillary 702; the first circulation box 1, the second circulation box 2 and the third circulation box 3 are all provided with heat dissipation chambers 703; the interiors of the three heat dissipation chambers 703 are all provided with a plurality of heat conduction plates 701 in sequence from top to bottom, and the capillaries 702 are sleeved with the heat conduction plates 701;

[0030] In this embodiment, when working, the oil suction port of the circulation pump 4 is connected to the oil outlet end of the transformer, and then the transformer oil is sent to the first circulation box 1 for circulation cooling before use. During secondary cooling, the water temperature inside the first circulation box 1 is detected by the temperature sensor 11. If the water temperature is higher than the transformer oil temperature, the transformer oil is sent to the second circulation box 2 for circulation cooling. If the water temperature inside the first circulation box 1 is lower than the transformer oil temperature, the transformer oil is sent to the first circulation box 1 again for circulation cooling. According to the above method, during cooling, the position where the transformer oil enters can be intelligently adjusted, so that the temperature cooling efficiency of the transformer oil is higher.

[0031] like Figure 2 and Figure 3 As shown, a plurality of ceramic plates 8 are fixedly installed on the outside of the first circulation box 1, the second circulation box 2 and the third circulation box 3 on both sides away from the oil inlet pipe 5 and the oil return pipe 6, and a heat dissipation cover 9 is arranged outside the ceramic plate 8 of the first circulation box 1, the second circulation box 2 and the third circulation box 3, and a fan 10 is arranged on one side of the heat dissipation cover 9 close to the ceramic plate 8;

[0032] In this embodiment, after the water temperature in the first circulation box 1 absorbs heat, it is monitored by the temperature sensor 11, and then the fan 10 at the corresponding position is controlled to start. After the fan 10 is started, the water temperature inside the first circulation box 1 is reduced, while the position with normal water temperature does not need to be cooled by the fan 10, which can save energy.

[0033] like Figure 2 As shown, the top of the first circulation box 1, the second circulation box 2 and the third circulation box 3 near the circulation pump 4 are all connected with a temperature sensor 11, and the oil inlet pipe 5 and the oil return pipe 6 are provided with a solenoid valve 12 between the first circulation box 1, the second circulation box 2 and the third circulation box 3;

[0034] In this embodiment, the solenoid valve 12 arranged between the oil inlet pipe 5 and the oil return pipe 6 and the first circulation box 1, the second circulation box 2 and the third circulation box 3 is used to switch the passage so that the transformer oil can enter the heat dissipation chamber 703 at the corresponding position for cooling.

[0035] like Figure 2 As shown, the first circulation box 1, the second circulation box 2 and the third circulation box 3 are connected to a liquid level sensor 13 in the middle of the side away from the temperature sensor 11, a water inlet pipe 14 is arranged above the liquid level sensor 13, and a water outlet pipe 15 is arranged below the liquid level sensor 13;

[0036] In this embodiment, the liquid level sensor 13 on one side of the first circulation box 1, the second circulation box 2 and the third circulation box 3 is used to monitor the water level therein. When the water level is insufficient, it is replenished from the water inlet pipe 14, and the water inside the first circulation box 1, the second circulation box 2 and the third circulation box 3 can be discharged and replaced through the water outlet pipe 15.

[0037] like Figure 1 As shown, a plurality of dust covers 16 are sequentially installed on the outer side of the heat dissipation cover 9 from top to bottom, and the number of the dust covers 16 is the same as that of the fans 10 and they are opposite to each other in pairs;

[0038] In this embodiment, a corresponding dust cover 16 is provided on the outside of the heat dissipation cover 9 close to the fan 10, so as to prevent external dust from entering the heat dissipation cover 9 and affecting the heat dissipation effect.

[0039] Working principle: When working, connect the oil suction port of the circulation pump 4 to the oil outlet end of the transformer, and then send the transformer oil into the first circulation box 1 for circulation cooling before use. During secondary cooling, the water temperature inside the first circulation box 1 is detected by the temperature sensor 11. If the water temperature is higher than the transformer oil temperature, the transformer oil is sent to the second circulation box 2 for circulation cooling. If the water temperature inside the first circulation box 1 is lower than the transformer oil temperature, the transformer oil is sent to the first circulation box 1 again for circulation cooling. According to the above method, during cooling, the position where the transformer oil enters can be intelligently adjusted, so that the temperature cooling efficiency of the transformer oil is higher; when the water temperature in the first circulation box 1 absorbs heat, it is monitored by the temperature sensor 11, and then the fan 10 at the corresponding position is controlled to start. After the fan 10 is started, the water temperature inside the first circulation box 1 is reduced, and the position with normal water temperature does not need to be cooled by the fan 10, which can save energy.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A transformer oil circulation device for a hydropower station, characterized in that: include A first circulation box (1), wherein a second circulation box (2) is disposed at the bottom end of the first circulation box (1), a third circulation box (3) is disposed at the bottom end of the second circulation box (2), and a circulation pump (4) is fixedly installed on the left side of the bottom end of the third circulation box (3); The first circulation box (1), the second circulation box (2) and the third circulation box (3) are connected to the circulation pump (4) via an oil inlet pipe (5); and the ends of the first circulation box (1), the second circulation box (2) and the third circulation box (3) away from the oil inlet pipe (5) are connected to an oil return pipe (6); The first circulation box (1), the second circulation box (2) and the third circulation box (3) are all provided with a heat dissipation mechanism (7) inside, and the heat dissipation mechanism (7) comprises a heat conduction plate (701), a capillary tube (702) and a heat dissipation chamber (703).

2. A transformer oil circulation device for a hydropower station according to claim 1, characterized in that: The oil inlet pipe (5) and the oil return pipe (6) are located at one end inside the first circulation box (1), the second circulation box (2) and the third circulation box (3) and are connected through a capillary tube (702). The first circulation box (1), the second circulation box (2) and the third circulation box (3) are each provided with a heat dissipation chamber (703). A plurality of heat conduction plates (701) are arranged in sequence from top to bottom inside the three heat dissipation chambers (703), and the capillary tube (702) is sleeved with the heat conduction plates (701).

3. A transformer oil circulation device for a hydropower station according to claim 1, characterized in that: A plurality of ceramic plates (8) are fixedly mounted on the outside of the first circulation box (1), the second circulation box (2) and the third circulation box (3) on both sides away from the oil inlet pipe (5) and the oil return pipe (6); a heat dissipation cover (9) is arranged outside the ceramic plate (8) of the first circulation box (1), the second circulation box (2) and the third circulation box (3); and a fan (10) is arranged inside the heat dissipation cover (9) on one side close to the ceramic plate (8).

4. A transformer oil circulation device for a hydropower station according to claim 1, characterized in that: The top ends of the first circulation box (1), the second circulation box (2) and the third circulation box (3) close to the circulation pump (4) are all connected to a temperature sensor (11), and solenoid valves (12) are provided between the oil inlet pipe (5) and the oil return pipe (6) and the first circulation box (1), the second circulation box (2) and the third circulation box (3).

5. A transformer oil circulation device for a hydropower station according to claim 4, characterized in that: A liquid level sensor (13) is connected to the middle of one side of the first circulation box (1), the second circulation box (2) and the third circulation box (3) away from the temperature sensor (11); a water inlet pipe (14) is arranged above the liquid level sensor (13); and a water outlet pipe (15) is arranged below the liquid level sensor (13).

6. The oil circulation device for a hydropower station transformer according to claim 3, characterized in that: A plurality of dust covers (16) are installed in sequence from top to bottom on the outer side of the heat dissipation cover (9); the number of the dust covers (16) is the same as that of the fans (10) and they are opposite to each other in pairs.

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