An oil-immersed filter reactor

Abstract

This utility model provides an oil-immersed filter reactor, including an oil tank. Heat sinks are evenly arranged on both the front and rear sides of the oil tank, and active cooling mechanisms are evenly arranged on both the left and right sides of the oil tank. Each active cooling mechanism has a heat sink cylinder with a spiral tube arranged around its axis inside. An inlet pipe connector connected to one end of the spiral tube is located on the lower side of the heat sink cylinder, and an outlet pipe connector connected to the other end of the spiral tube is located on the upper side of the heat sink cylinder. A fan and a fan switching mechanism that drives the fan to reciprocate horizontally are located at the upper end of the heat sink cylinder. In this utility model, the active cooling mechanism can provide two cooling methods: one is to move the fan out of the heat sink cylinder, in which case the inside of the heat sink cylinder is cooled by air convection; the other is to move the fan into the heat sink cylinder, and the fan acceleration accelerates the airflow inside the heat sink cylinder, improving cooling efficiency and enabling it to cope with conditions where the winding heating power increases significantly.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, specifically relating to an oil-immersed filter reactor. Background Technology

[0002] Oil-immersed filter reactors are a type of reactor primarily used for harmonic mitigation in power systems. They form a resonant circuit with filter capacitors to absorb specific harmonic components in the power grid. Current oil-immersed filter reactors typically utilize heat sinks on their external surfaces for heat dissipation.

[0003] In the prior art, Chinese utility model patent document with authorization announcement number CN219916879U discloses a 5-10kV oil-immersed iron core integrated series reactor. Corrugated heat sinks are set around its oil tank. The heat of the internal windings is absorbed by insulating oil and transferred to the heat sinks through natural convection, and then cooled by air convection. However, in application scenarios such as AC withstand voltage test and harmonic amplification, the heating power of the windings will increase significantly. At this time, it is difficult to meet the heat dissipation requirements by relying solely on the heat sinks for natural convection, and the temperature rise is likely to exceed the limit, affecting the normal operation of the reactor.

[0004] Therefore, there is a need for an oil-immersed filter reactor that can cope with the significantly increased heating power of the windings and improve heat dissipation efficiency to solve the current technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an oil-immersed filter reactor that can cope with significantly increased winding heating power and improve heat dissipation efficiency.

[0006] The technical solution of this utility model is as follows: an oil-immersed filter reactor, including an oil tank, with heat sinks evenly arranged on both the front and rear sides of the oil tank, and active heat dissipation mechanisms evenly arranged on both the left and right sides of the oil tank; the active heat dissipation mechanism has a heat dissipation cylinder, with a spiral tube arranged around its axis inside the heat dissipation cylinder, an inlet pipe connector connected to one end of the spiral tube on the lower side of the heat dissipation cylinder, an outlet pipe connector connected to the other end of the spiral tube on the upper side of the heat dissipation cylinder, and a fan and a fan switching mechanism for driving the fan to reciprocate horizontally at the upper end of the heat dissipation cylinder.

[0007] Furthermore, the fan switching mechanism has a support groove fixedly installed on one side of the upper end of the heat sink, the fan is slidably installed inside the support groove, and an electric actuator for driving the fan to reciprocate is provided on one end of the support groove away from the heat sink.

[0008] Furthermore, a connecting seat is fixedly provided on the side of the fan near the electric actuator, the end of the electric actuator is connected to the connecting seat, and two guide rods are symmetrically arranged on the connecting seat and slidably connected to the end of the support groove. A limit plate is fixedly provided at the end of the guide rod.

[0009] Furthermore, a cover plate is fixedly provided on the top of the support groove.

[0010] Furthermore, a support rod is provided inside the heat dissipation cylinder along its axis, and heat dissipation plates are arranged in a circumferential array on the outer side of the support rod. The side of the heat dissipation plate opposite to the support rod is fixedly connected to the inside of the heat dissipation cylinder, and the heat dissipation plate is fixedly disposed on the outer side of the spiral tube.

[0011] Furthermore, an oil tank outlet pipe corresponding to the inlet pipe connector is fixedly provided on one side of the bottom of the oil tank, and an oil tank inlet pipe corresponding to the outlet pipe connector is fixedly provided on one side of the top of the oil tank. The oil tank outlet pipe and the inlet pipe connector are detachably and fixedly connected.

[0012] Furthermore, both the oil tank inlet pipe and the oil tank outlet pipe are equipped with shut-off valves.

[0013] Furthermore, a liquid pump is installed on the liquid inlet pipe connector.

[0014] The beneficial effects of this utility model are: In this invention, the active heat dissipation mechanism can provide two heat dissipation methods. One is that the fan switching mechanism drives the fan to move out of the position corresponding to the inside of the heat dissipation cylinder. At this time, the inside of the heat dissipation cylinder is cooled by air convection. The other is that the fan switching mechanism drives the fan to enter the position corresponding to the inside of the heat dissipation cylinder. The fan starts to accelerate the air flow inside the heat dissipation cylinder, improves the heat dissipation efficiency, and can cope with the condition of significantly increased winding heat power. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the oil-immersed filter reactor in this utility model.

[0016] Figure 2 This is a schematic diagram of one embodiment of the active heat dissipation mechanism in this utility model.

[0017] Figure 3 This is one of the structural schematic diagrams of another embodiment of the active heat dissipation mechanism in this utility model.

[0018] Figure 4 This is a second schematic diagram of another embodiment of the active heat dissipation mechanism in this utility model.

[0019] Figure 5This is a schematic diagram of another embodiment of the active heat dissipation mechanism in this utility model. Detailed Implementation

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0021] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 4As shown, an oil-immersed filter reactor is disclosed, including an oil tank 1. Heat sinks 2 are evenly arranged on both the front and rear sides of the oil tank 1, and active cooling mechanisms 3 are evenly arranged on both the left and right sides of the oil tank 1. The active cooling mechanism 3 has a heat sink 31, with a spiral tube 32 arranged around its axis inside the heat sink 31. An inlet pipe connector 321 connected to one end of the spiral tube 32 is provided on the lower side of the heat sink 31, and an outlet pipe connector connected to the other end of the spiral tube 32 is provided on the upper side of the heat sink 31. A fan 34 and a fan switching mechanism 35 that drives the fan 34 to reciprocate horizontally are provided at the upper end of the heat sink 31. In this embodiment, the active cooling mechanism 3 can provide two cooling methods, one of which is fan switching. Mechanism 35 drives the fan 34 to move out of the position corresponding to the inside of the heat sink 31. At this time, the inside of the heat sink 31 is cooled by air convection. Alternatively, the fan switching mechanism 35 drives the fan 34 into the position corresponding to the inside of the heat sink 31. The fan 34 starts and accelerates the air flow inside the heat sink 31, improving heat dissipation efficiency and enabling it to cope with the condition of significantly increased winding heat power. In actual use, the oil temperature can be monitored by setting a temperature sensor inside the oil tank 1. When the oil temperature reaches the preset value, the fan switching mechanism 35 drives the fan 34 into the position corresponding to the inside of the heat sink 31 and starts the fan, improving heat dissipation efficiency. The spiral tube 32 can increase the contact area with the air, further improving heat dissipation efficiency.

[0023] In some embodiments, the fan switching mechanism 35 has a support groove 351 fixedly disposed on one side of the upper end of the heat sink 31, and the fan 34 is slidably disposed inside the support groove 351. An electric push rod 354 for driving the fan 34 to reciprocate is disposed on one end of the support groove 351 away from the heat sink 31. By controlling the extension or retraction of the electric push rod 354, the fan 34 can be driven into the position corresponding to the inside of the heat sink 31, or the fan 34 can be moved out of the position corresponding to the inside of the heat sink 31.

[0024] In some embodiments, a connecting seat 355 is fixedly provided on the side of the fan 34 near the electric actuator 354. The end of the electric actuator 354 is connected to the connecting seat 355. Two guide rods 352 are symmetrically arranged on the connecting seat 355 and are slidably connected to the end of the support groove 351. A limit plate 353 is fixedly provided at the end of the guide rod 352. The fan 34 achieves a sliding connection with the support groove 355 through the guide rods 352, which improves the stability of the fan 34 movement.

[0025] In some embodiments, a cover plate 356 is fixedly provided on the top of the support groove 351. When the fan 34 is not started, the fan 34 is retracted into the cover plate 356, which provides a certain degree of protection for the fan 34 and prevents the fan 34 from blocking the upper end of the heat sink 31, thus ensuring smooth airflow.

[0026] In some embodiments, a support rod 37 is provided inside the heat sink 31 along its axis, and heat sink plates 33 are arranged in a circumferential array on the outside of the support rod 37. The side of the heat sink plate 33 facing away from the support rod 37 is fixedly connected to the inside of the heat sink 31, and the heat sink plate 33 is fixedly disposed on the outside of the spiral tube 32.

[0027] In some embodiments, such as Figure 5 As shown, an oil tank outlet pipe 11 corresponding to the inlet pipe connector 321 is fixedly installed on one side of the bottom of the oil tank 31, and an oil tank inlet pipe 12 corresponding to the outlet pipe connector 322 is fixedly installed on one side of the top of the oil tank 31. The oil tank outlet pipe 11 is detachably and fixedly connected to the inlet pipe connector 321, and the oil tank inlet pipe 12 is detachably and fixedly connected to the outlet pipe connector 322. Specifically, the oil tank outlet pipe 11 is detachably and fixedly connected to the inlet pipe connector 321 through a flange structure, and the oil tank inlet pipe 12 is detachably and fixedly connected to the outlet pipe connector 322 through a flange structure.

[0028] In some embodiments, both the oil tank inlet pipe 12 and the oil tank outlet pipe 11 are equipped with shut-off valves 13. After a period of operation, the active cooling mechanism 3 needs to be cleaned and maintained. At this time, the active cooling mechanism 3 can be disassembled after shutting off the shut-off valve 13, which can prevent the oil in the oil tank 1 from flowing out and reduce oil loss.

[0029] In some embodiments, a liquid pump 36 is provided on the liquid inlet pipe connector 321. The liquid pump 36 can drive the oil inside the oil tank 1 into the interior of the spiral tube 32 to improve heat dissipation efficiency.

[0030] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0031] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An oil-immersed filter reactor, characterized by: The system includes an oil tank, on which heat dissipation fins are evenly arranged on both the front and rear sides, and on which active heat dissipation mechanisms are evenly arranged on both the left and right sides. Each active heat dissipation mechanism has a heat dissipation cylinder, inside which a spiral tube is arranged around its axis. The lower side of the heat dissipation cylinder is provided with an inlet pipe connector that communicates with one end of the spiral tube, and the upper side of the heat dissipation cylinder is provided with an outlet pipe connector that communicates with the other end of the spiral tube. The upper end of the heat dissipation cylinder is provided with a fan and a fan switching mechanism that drives the fan to reciprocate horizontally.

2. The oil immersed filtering reactor according to claim 1, characterized in that: The fan switching mechanism has a support groove fixedly installed on one side of the upper end of the heat sink. The fan is slidably installed inside the support groove. An electric actuator is provided on the end of the support groove opposite to the heat sink to drive the fan to reciprocate.

3. The oil immersed filtering reactor according to claim 2, characterized in that: A connecting seat is fixedly installed on the side of the fan near the electric actuator. The end of the electric actuator is connected to the connecting seat. Two guide rods are symmetrically arranged on the connecting seat and are slidably connected to the end of the support groove. A limit plate is fixedly installed at the end of the guide rod.

4. The oil immersed filtering reactor according to claim 2, characterized in that: A cover plate is fixedly installed on the top of the support groove.

5. The oil immersed filtering reactor according to claim 1, characterized in that: Inside the heat dissipation cylinder, a support rod is arranged along its axis. Outside the support rod, heat dissipation plates are arranged in a circular array. The side of the heat dissipation plates opposite to the support rod is fixedly connected to the inside of the heat dissipation cylinder. The heat dissipation plates are fixedly arranged on the outside of the spiral tube.

6. The oil immersed filtering reactor according to claim 1, characterized in that: A fuel tank outlet pipe corresponding to the inlet pipe connector is fixedly installed on one side of the bottom of the fuel tank, and a fuel tank inlet pipe corresponding to the outlet pipe connector is fixedly installed on one side of the top of the fuel tank. The fuel tank outlet pipe and the inlet pipe connector are detachably and fixedly connected.

7. The oil immersed filtering reactor according to claim 6, characterized in that: Both the oil tank inlet pipe and the oil tank outlet pipe are equipped with shut-off valves.

8. The oil immersed filtering reactor according to claim 1, characterized in that: A liquid pump is installed on the liquid inlet pipe joint.

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