Cold air circulation device for shipborne sealing refrigeration equipment

Abstract

The utility model relates to the technical field of marine transformer refrigeration, and discloses a cold air circulation device for shipborne sealing refrigeration equipment, which comprises an oil-immersed transformer box body and a plurality of sealing tanks, the inner sides of the plurality of sealing tanks are fixedly connected with a plurality of inner leakage baffles and a plurality of outer leakage baffles, the inner leakage baffles and the outer leakage baffles are arranged in a staggered mode from top to bottom, each inner leakage baffle is provided with an inner hollowed-out groove, the outer edge of each outer leakage baffle is provided with an outer hollowed-out groove, and stirring heat dissipation mechanisms are arranged above each inner leakage baffle and each outer leakage baffle. An insulating oil circulating mechanism is arranged between each sealing tank and the oil-immersed transformer box body, high-temperature insulating oil in the oil-immersed transformer box body is introduced into the sealing tanks, and the insulating oil flowing back and forth on the outer leakage baffle and the inner leakage baffle is fully turned over through the stirring heat dissipation mechanism, so that the oil-immersed transformer box body can be cooled, and the oil-immersed transformer box body can be cooled. The heat dissipation area of the insulating oil is increased, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of marine oil-immersed transformer technology, and in particular to a cold air circulation device for a marine sealed refrigeration equipment. Background Technology

[0002] With the increasing size of ships and the application of electric propulsion, more and more ships are using AC high-voltage power devices. In the high-load environment at sea, the reliability of transformers is very important. Marine oil-immersed transformers are a new type of high-performance transformer with a more reasonable structure and better performance. Utilizing the good insulation properties of insulating oil, they can not only effectively isolate the internal windings of the transformer from the external environment, but also achieve efficient heat dissipation through the insulating oil. However, existing marine oil-immersed transformers generally use heat sinks or heat dissipation rods in conjunction with fans for heat dissipation, which may be insufficient in terms of heat dissipation efficiency.

[0003] For example, Chinese utility model patent CN218602220U discloses a circulating cooling oil-immersed transformer, which includes a fixed platform with a support frame connected to the lower end of the fixed platform. Although this solution can prevent personnel from being burned by the heat dissipation box and oil tank and has high safety, the passive method of heat dissipation through heat conduction via the heat dissipation rod may not be able to keep up with the transformer's demand under high load conditions at sea. Based on this, a cold air circulation device for shipborne sealed refrigeration equipment is proposed. Utility Model Content

[0004] To solve the technical problem of heat dissipation in marine oil-immersed transformers, this utility model provides a cold air circulation device for marine sealed refrigeration equipment.

[0005] This utility model is achieved using the following technical solution: a cold air circulation device for a shipborne sealed refrigeration equipment, comprising an oil-immersed transformer tank and multiple sealed tanks. Multiple inner leakage baffles and multiple outer leakage baffles are fixedly connected to the inner sides of each of the multiple sealed tanks. The multiple inner leakage baffles and the multiple outer leakage baffles are arranged alternately from top to bottom. Each inner leakage baffle has an inner groove, and each outer leakage baffle has an outer groove at its outer edge. A stirring and heat dissipation mechanism is provided above each inner leakage baffle and each outer leakage baffle. An insulating oil circulation mechanism is provided between each sealed tank and the oil-immersed transformer tank. A cold air circulation and heat dissipation mechanism is provided on the side of each sealed tank away from the oil-immersed transformer tank.

[0006] As a further improvement to the above solution, the stirring and heat dissipation mechanism includes a central rotating rod that is rotatably connected to the inside of each of the sealed tanks. The central rotating rod passes through the sealed tank from top to bottom and is rotatably connected to each of the external leakage baffles. The central rotating rod passes through the center of each internal groove.

[0007] Each of the sealed containers is equipped with a motor on its lower side, and the output end of the motor is fixedly connected to the lower end of the central rotating rod, which is equipped with a rake-tooth stirring mechanism.

[0008] As a further improvement to the above solution, the rake tooth stirring mechanism includes multiple rake rods arranged above each of the outer and inner drain baffles, with the multiple rake rods of each layer arranged in a circumferential array, and one end of each rake rod being fixedly connected to one side of the central rotating rod.

[0009] As a further improvement to the above solution, a plurality of rake rods above each of the outer leaking baffles are respectively fixedly connected with positive rake teeth on their lower sides, and a plurality of rake rods above each of the inner leaking baffles are respectively fixedly connected with negative rake teeth on their lower sides. Each positive rake tooth abuts against the upper side of the outer leaking baffle, and each negative rake tooth abuts against the upper side of the inner leaking baffle.

[0010] As a further improvement to the above solution, the insulating oil circulation mechanism includes an insulating oil return pipe that is connected to the lower side of each of the sealed tanks, each insulating oil return pipe that is connected to the oil-immersed transformer tank, an insulating oil inlet pipe that is connected to the upper side of each of the sealed tanks, a pump body that is connected to one end of each insulating oil inlet pipe, and each pump body that is connected to the oil-immersed transformer tank.

[0011] As a further improvement to the above solution, the cold air circulation and heat dissipation mechanism includes a cold air outlet pipe connected to the upper side of each of the sealed cans, and a cold air inlet pipe connected to the lower side of each of the sealed cans.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model introduces the high-temperature insulating oil inside the tank of an oil-immersed transformer into the sealed tank. Through a stirring and heat dissipation mechanism, the insulating oil flowing back and forth on the outer and inner leakage baffles is fully tumbled, increasing the heat dissipation area of ​​the insulating oil itself and improving the heat dissipation efficiency.

[0014] 2. This utility model injects cold air through the cold air inlet pipe on the lower side of the sealed container. The cold air flows upward from the outer groove of the outer leakage baffle, and then flows upward from the inner groove of the inner leakage baffle, and finally flows out from the cold air outlet pipe. The cold air flows from bottom to top and the insulating oil flows from top to bottom, forming convection. This allows the surfaces of the cold air and the insulating oil to come into full contact, which can fully remove the heat emitted by the sealed container and discharge it outside the container. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a cold air circulation device for a shipborne sealed refrigeration equipment provided by this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the internal structure of the sealed container (2);

[0017] Figure 3 This is a schematic diagram of the rake tooth stirring mechanism in this utility model.

[0018] Explanation of key symbols:

[0019] 1. Oil-immersed transformer enclosure; 2. Sealed tank; 3. Cooling air inlet pipe; 4. Insulating oil inlet pipe; 5. Cooling air outlet pipe; 6. Motor; 7. Insulating oil return pipe; 8. Rake rod; 9. External leakage baffle; 10. External groove; 11. Internal leakage baffle; 12. Internal groove; 13. Positive rake teeth; 14. Reverse rake teeth; 15. Central rotating rod; 16. Pump body. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] Example:

[0022] Please combine Figure 1 - Figure 3 This embodiment of a shipborne sealed refrigeration equipment cold air circulation device includes an oil-immersed transformer tank 1 and three sealed tanks 2. Each of the three sealed tanks 2 has two inner leakage baffles 11 and one outer leakage baffle 9 fixedly connected to its inner side. It should be noted that in this embodiment, only two inner leakage baffles 11 and one outer leakage baffle 9 are provided in each sealed tank 2. In other embodiments, other numbers of inner leakage baffles 11 and outer leakage baffles 9 can be provided as needed. The two inner leakage baffles 11 and the outer leakage baffles 9 are arranged alternately from top to bottom. Each inner leak baffle 11 has an inner groove 12, which is circular and located at the center of the tank. Each outer leak baffle 9 has an outer groove 10 at its outer edge. Each outer groove 10 is separated and fixedly connected to the inner wall of the tank. Each inner leak baffle 11 and outer leak baffle 9 is equipped with a stirring and heat dissipation mechanism. Each sealed tank 2 is equipped with an insulating oil circulation mechanism between it and the oil-immersed transformer tank 1. Each sealed tank 2 is equipped with a cold air circulation and heat dissipation mechanism on the side away from the oil-immersed transformer tank 1.

[0023] With the above technical solution, when the insulating oil enters the tank, due to the staggered arrangement of the inner leakage baffle 11 and the outer leakage baffle 9 and the inner groove 12 and the outer groove 10 that are opened in the inner and outer directions, the insulating oil can only flow from the inner leakage baffle 11 down to the outer leakage baffle 9, and the oil flows back and forth between the inner and outer sides, which forcibly increases the heat dissipation area of ​​the insulating oil.

[0024] Please combine Figure 2 As shown, the stirring and heat dissipation mechanism includes a central rotating rod 15 that is rotatably connected to the inside of each sealed tank 2. The central rotating rod 15 passes through the sealed tank 2 from top to bottom. The central rotating rod 15 is rotatably connected to each external leakage baffle 9. The central rotating rod 15 passes through the center of each internal groove 12.

[0025] Each sealed tank 2 is equipped with a motor 6 on its lower side. The output end of the motor 6 is fixedly connected to the lower end of the central rotating rod 15, which is equipped with a rake tooth stirring mechanism.

[0026] Please combine Figure 2 As shown, the rake tooth stirring mechanism includes three rake rods 8 arranged above each outer drain baffle 9 and each inner drain baffle 11. In this embodiment, three rake rods 8 are arranged in each layer, and the three rake rods 8 in each layer are arranged in a circumferential array. One end of each rake rod 8 is fixedly connected to one side of the central rotating rod 15.

[0027] Through the above technical solution, the central rotating rod 15 is mainly used to drive each rake rod 8 to rotate simultaneously, so as to achieve multi-level stirring of the insulating oil.

[0028] Please combine Figure 2 As shown, the lower sides of the three rake rods 8 above each outer baffle 9 are fixedly connected with positive rake teeth 13, and the lower sides of the three rake rods 8 above each inner baffle 11 are fixedly connected with negative rake teeth 14. Each positive rake tooth 13 abuts against the upper side of the outer baffle 9, and each negative rake tooth 14 abuts against the upper side of the inner baffle 11.

[0029] It should be noted that the reverse rake teeth 14 and the forward rake teeth 13 play a role in accelerating the mixing process and can control the efficiency of heat dissipation.

[0030] Please combine Figure 2 and Figure 1 As shown, the insulating oil circulation mechanism includes an insulating oil return pipe 7 that is connected to the lower side of each sealed tank 2. Each insulating oil return pipe 7 is connected to the oil-immersed transformer tank 1. Each sealed tank 2 has an insulating oil inlet pipe 4 connected to the upper side. One end of each insulating oil inlet pipe 4 is connected to a pump body 16. Each pump body 16 is connected to the oil-immersed transformer tank 1.

[0031] Please combine Figure 2 As shown, the cold air circulation and heat dissipation mechanism includes a cold air outlet pipe 5 connected to the upper side of each sealed tank 2, and a cold air inlet pipe 3 connected to the lower side of each sealed tank 2. The cold air generated by the third-party refrigeration mechanism can be introduced through the cold air inlet pipe 3.

[0032] The implementation principle of the cold air circulation device for a shipborne sealed refrigeration equipment in this application embodiment is as follows: the pump body 16 draws out the insulating oil from the oil-immersed transformer tank 1 and injects it into the sealed tank 2 along the insulating oil inlet pipe 4. The insulating oil first falls into the upper side of the inner leakage baffle 11. The central rotating rod 15 is driven to rotate by the motor 6, which pushes the rake rod 8 to rotate. The reverse rake teeth 14 above the inner leakage baffle 11 push the insulating oil inward and flow down from the inner groove 12 on the inner leakage baffle 11 to the outer leakage baffle 9. At this time, the positive rake teeth 13 on the outer leakage baffle 9 push the insulating oil outward, so that the insulating oil flows down from the outer groove 10 on the outer leakage baffle 9 and finally collects in the insulating oil return pipe 7 and returns to the oil-immersed transformer tank 1. During this period, external cold air is injected from the lower cold air inlet pipe 3 and flows upward along the outer groove 10 and inner groove 12 in sequence. After carrying the heat inside the sealed tank 2, it flows out from the cold air outlet pipe 5 to achieve the function of cooling and heat dissipation.

[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A cold air circulation device for a shipborne sealed refrigeration system, comprising an oil-immersed transformer housing (1) and multiple sealed tanks (2), characterized in that, Multiple inner leakage baffles (11) and multiple outer leakage baffles (9) are fixedly connected to the inner side of multiple sealed tanks (2). The multiple inner leakage baffles (11) and the multiple outer leakage baffles (9) are arranged alternately from top to bottom. Each inner leakage baffle (11) has an inner groove (12) and each outer leakage baffle (9) has an outer groove (10) at its outer edge. Each inner leakage baffle (11) and the outer leakage baffle (9) is provided with a stirring and heat dissipation mechanism above it. Each sealed tank (2) is provided with an insulating oil circulation mechanism between it and the oil-immersed transformer tank (1). Each sealed tank (2) is provided with a cold air circulation and heat dissipation mechanism on the side away from the oil-immersed transformer tank (1).

2. The cold air circulation device for a shipborne sealed refrigeration system as described in claim 1, characterized in that, The stirring and heat dissipation mechanism includes a central rotating rod (15) that is rotatably connected to the inside of each of the sealed tanks (2). The central rotating rod (15) passes through the sealed tank (2) from top to bottom. The central rotating rod (15) is rotatably connected to each of the external leakage baffles (9). The central rotating rod (15) passes through the center of each inner groove (12). Each of the sealed tanks (2) is equipped with a motor (6) on its lower side. The output end of the motor (6) is fixedly connected to the lower end of the central rotating rod (15). The central rotating rod (15) is equipped with a rake tooth stirring mechanism.

3. The cold air circulation device for a shipborne sealed refrigeration system as described in claim 2, characterized in that, The rake tooth stirring mechanism includes multiple rake rods (8) arranged above each of the outer drain baffles (9) and each inner drain baffle (11). The multiple rake rods (8) of each layer are arranged in a circumferential array, and one end of each rake rod (8) is fixedly connected to one side of the central rotating rod (15).

4. The cold air circulation device for a shipborne sealed refrigeration system as described in claim 3, characterized in that, Each of the external baffles (9) has a plurality of rake rods (8) fixedly connected to the lower side of each of the external baffles (9), and each of the internal baffles (11) has a plurality of rake rods (8) fixedly connected to the lower side of each of the internal baffles (11). Each of the external baffles (9) abuts against the upper side of the external baffles (9), and each of the internal baffles (14) abuts against the upper side of the internal baffles (11).

5. A cold air circulation device for a shipborne sealed refrigeration system as described in claim 1, characterized in that, The insulating oil circulation mechanism includes an insulating oil return pipe (7) that is connected to the lower side of each of the sealed tanks (2), each of the insulating oil return pipes (7) is connected to the oil-immersed transformer tank (1), each of the sealed tanks (2) is connected to an insulating oil inlet pipe (4) on the upper side, and one end of each of the insulating oil inlet pipes (4) is connected to a pump body (16), and each of the pump bodies (16) is connected to the oil-immersed transformer tank (1).

6. A cold air circulation device for a shipborne sealed refrigeration system as described in claim 1, characterized in that, The cold air circulation and heat dissipation mechanism includes a cold air outlet pipe (5) connected to the upper side of each of the sealed cans (2), and a cold air inlet pipe (3) connected to the lower side of each of the sealed cans (2).

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