Vegetable oil heat transfer medium transformer

Abstract

The application discloses a vegetable oil heat dissipation medium transformer, which comprises a box body, a transformer main body, a cooling mechanism and a controller, a containing space is formed in the box body, and a plurality of first temperature sensors are arranged in the containing space; the top side of the box body is an inlet and outlet, a box cover is arranged on the inlet and outlet, and an oil injection through hole is formed in the box cover; a plurality of connecting through holes are formed on the side of the box body away from the box cover, each connecting through hole is communicated with the containing space, and each connecting through hole is arranged around the transformer main body; the cooling mechanism is respectively communicated with each connecting through hole and the oil injection through hole; the controller is electrically connected with the cooling mechanism and each first temperature sensor; the controller is used for determining an oil temperature abnormal area in the containing space according to oil temperature data, and then controlling the cooling mechanism to draw out the vegetable oil in the oil temperature abnormal area through at least one connecting through hole adjacent to the oil temperature abnormal area, so that the cooled vegetable oil enters the containing space through the oil injection through hole. In the technical scheme, the heat dissipation efficiency of the transformer main body is effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and in particular to a transformer using vegetable oil as a heat dissipation medium. Background Technology

[0002] Oil-immersed transformers are a new type of high-performance transformer with a more rational structure and superior performance. Their three-dimensional wound core, with its three core columns arranged in an equilateral triangle, eliminates air gaps in the magnetic circuit, resulting in tighter winding, uniform and shortest lengths for the three magnetic circuits, and a cross-sectional area closer to a circle. This further improves performance, reduces losses and noise, achieves three-phase balance, and reduces third harmonic components. This product is more suitable for power grid upgrades in urban and rural areas, industrial and mining enterprises, and for use in combined transformers and prefabricated substations. Oil-immersed transformers use either mineral oil or vegetable oil. Vegetable oil is easily degradable, has low pollution capacity, and is fire-resistant and heat-resistant; however, its higher kinematic viscosity results in lower cooling performance compared to typical mineral oil, affecting the transformer's heat dissipation efficiency. Summary of the Invention

[0003] The main objective of this invention is to provide a transformer with vegetable oil as the heat dissipation medium, which aims to solve the problem of low cooling performance of vegetable oil affecting the heat dissipation efficiency of the transformer.

[0004] To achieve the above objectives, the technical solution proposed by this invention is as follows:

[0005] A vegetable oil heat dissipation transformer includes a housing, a transformer body, a cooling mechanism, and a controller. The housing has a receiving space containing several first temperature sensors. The receiving space accommodates the transformer body. The top side of the housing has an inlet / outlet connected to the receiving space. A cover is provided at the inlet / outlet, and the cover has an oil filling hole to seal the inlet / outlet. Several connecting holes are provided on the side of the housing away from the cover, each connecting hole connecting to the receiving space. These connecting holes surround the transformer body. The cooling mechanism is connected to each of the connecting through holes and the oil injection through holes respectively; the controller is electrically connected to the cooling mechanism and each of the first temperature sensors respectively, and each of the first temperature sensors is used to acquire oil temperature data of each area in the containing space and send it to the controller; the controller is used to determine the oil temperature abnormal area in the containing space according to the oil temperature data, and then control the cooling mechanism to extract and cool the vegetable oil in the oil temperature abnormal area through at least one connecting through hole adjacent to the oil temperature abnormal area, so that the cooled vegetable oil enters the containing space through the oil injection through hole.

[0006] Preferably, the cooling mechanism includes a first pump body, connecting pipes, and a cooling tank. The cooling tank is located on the side of the tank body away from the tank cover and is used to contain coolant. One end of the connecting pipe is connected to each of the connecting through holes, and the other end of the connecting pipe passes through the cooling tank and connects to the oil injection through hole. The first pump body is located on the connecting pipe and outside the cooling tank. The controller is electrically connected to the first pump body and is used to control the first pump body so that the vegetable oil in the containing space passes through each of the connecting through holes, is cooled by the cooling tank along the connecting pipe, and then enters the containing space through the oil injection through hole.

[0007] Preferably, the connecting pipeline includes a first connecting pipe and a plurality of second connecting pipes, each second connecting pipe being located between the cooling tank and the tank body, one end of each second connecting pipe being connected to an adjacent connecting through hole, and the other end of each second connecting pipe being connected to one end of the first connecting pipe, the other end of the first connecting pipe passing through the cooling tank and connecting to the oil injection through hole; each second connecting pipe is provided with an electrically controlled valve; the first pump body is disposed on the first connecting pipe; the controller is electrically connected to each of the electrically controlled valves, and the controller is used to control at least one of the electrically controlled valves adjacent to the abnormal oil temperature area to open, and to open the first pump body, so that the vegetable oil in the abnormal oil temperature area enters the first connecting pipe through the adjacent second connecting pipe for cooling; the number of second connecting pipes is equal to the number of connecting through holes.

[0008] Preferably, the cooling tank is provided with an inlet pipe, a second pump body, and at least one outlet pipe on its outer side. One end of the inlet pipe is connected to an external water source, and the other end of the inlet pipe is connected to the cooling tank. The second pump body is disposed on the inlet pipe. One end of each outlet pipe is connected to the inside of the cooling tank, and the other end of each outlet pipe is provided with a nozzle. Each nozzle surrounds the tank body. The controller is electrically connected to the second pump body and is used to control the second pump body to pressurize the cooling tank so that the pressure drives the water to be sprayed out of the tank body sequentially through each outlet pipe and each nozzle.

[0009] Preferably, a heat sink is provided on the outside of the housing; a second temperature sensor is provided inside the cooling tank, and the controller is electrically connected to the second temperature sensor. The second temperature sensor is used to acquire water temperature data in the cooling tank and send it to the controller; the controller is used to control the second pump body according to the water temperature data so that the water temperature in the cooling tank is lower than a preset water temperature.

[0010] Preferably, the housing is provided with a plurality of telescopic tubes and an adjustment mechanism. Each telescopic tube is vertically arranged and surrounds the transformer body. The end of each telescopic tube away from the housing cover is connected to the adjacent connecting through hole. The adjustment mechanism is located on the side of the housing cover facing the transformer body. The adjustment mechanism is electrically connected to the controller. The controller is used to control the adjustment mechanism according to the oil temperature data so that the adjustment mechanism controls the horizontal height of each telescopic tube at the connection point of the accommodating space.

[0011] Preferably, the adjustment mechanism includes the electrically controlled lift, a connecting rod, and a connecting frame. The connecting rod and the connecting frame are both disposed within the accommodating space. The connecting frame surrounds the transformer body and is connected to the ends of each telescopic tube near the tank cover. The connecting rod is located between the connecting frame and the tank cover, with its end away from the tank cover connected to the connecting frame. The electrically controlled lift is disposed on the side of the tank cover opposite to the accommodating space, and its output end passes through the tank cover and connects to the end of the connecting rod away from the connecting frame. The controller is electrically connected to the electrically controlled lift and is used to control the electrically controlled lift based on the oil temperature data, driving the connecting rod to pull the connecting frame, so that the connecting frame pulls the ends of each telescopic tube near the tank cover vertically up and down.

[0012] Preferably, the end of each telescopic tube closest to the box cover is positioned facing the transformer body.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] Based on the oil temperature data of each oil in the containment space, the abnormal oil temperature area is determined, and then the vegetable oil in the abnormal oil temperature area is cooled by the cooling mechanism, which effectively ensures the heat dissipation efficiency of the transformer body. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a structure of an embodiment of the vegetable oil heat dissipation medium transformer of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the box.

[0018] Explanation of icon numbers:

[0019] 1-Enclosure; 11-Transformer body; 12-Accommodation space; 13-Enclosure cover; 14-Connecting through hole; 15-Heat sink; 16-Expansion tube; 17-Oil filling through hole;

[0020] 2-Cooling mechanism; 21-First pump body; 22-Connecting pipe; 23-First connecting pipe; 24-Second connecting pipe; 25-Cooling tank; 26-Inlet pipe; 27-Outlet pipe; 28-Sprayer head;

[0021] 3-Adjustment mechanism; 31-Electric lifting device; 32-Connecting rod; 33-Connecting frame;

[0022] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0028] This invention proposes a transformer with vegetable oil as the heat dissipation medium.

[0029] like Figures 1 to 2 The illustrated vegetable oil heat dissipation transformer includes a housing 1, a transformer body 11, a cooling mechanism 2, and a controller. The housing 1 has an internal accommodating space 12, within which several first temperature sensors (not shown) are installed. The accommodating space 12 accommodates the transformer body 11. The top side of the housing 1 has an inlet / outlet connected to the accommodating space 12. A cover 13 is provided at the inlet / outlet, and the cover 13 has an oil filling through-hole 17, which seals the inlet / outlet. Several connecting through-holes 14 are provided on the side of the housing 1 away from the cover 13, each connecting through-hole 14 connecting to the accommodating space 12. Holes 14 are arranged around the transformer body 11; cooling mechanisms 2 are connected to each connecting through hole 14 and oil injection through hole 17 respectively; controllers are electrically connected to cooling mechanisms 2 and each first temperature sensor respectively. Each first temperature sensor is used to acquire oil temperature data of each area in the containment space 12 and send it to the controller; the controller is used to determine the oil temperature abnormal area in the containment space 12 according to each oil temperature data, and then control cooling mechanism 2 to extract vegetable oil in the oil temperature abnormal area through at least one connecting through hole 14 adjacent to the oil temperature abnormal area to cool it down, so that the cooled vegetable oil enters the containment space 12 through the oil injection through hole 17.

[0030] Based on the oil temperature data of each oil in the containment space 12, the abnormal oil temperature area is determined, and then the vegetable oil in the abnormal oil temperature area is cooled by the cooling mechanism 2, which effectively ensures the heat dissipation efficiency of the transformer body 11.

[0031] Specifically, each connecting through hole 14 is set vertically.

[0032] The cooling mechanism 2 includes a first pump body 21, a connecting pipe 22, and a cooling tank 25. The cooling tank 25 is located on the side of the housing 1 away from the cover 13 and is used to contain coolant. One end of the connecting pipe 22 is connected to each connecting through hole 14, and the other end of the connecting pipe 22 passes through the cooling tank 25 and connects to the oil injection hole 17. The first pump body 21 is located on the connecting pipe 22 and is outside the cooling tank 25. A controller is electrically connected to the first pump body 21 and controls the first pump body 21 so that the vegetable oil in the containing space 12 is cooled by the cooling tank 25 after passing through each connecting through hole 14, and then enters the containing space 12 through the oil injection hole 17. The cooling tank 25 is located on the bottom side of the housing 1, which can conceal the cooling tank 25 and cool the vegetable oil passing through the connecting pipe 22, thereby reducing the oil temperature and accelerating the flow of vegetable oil in the containing space 12.

[0033] The connecting pipe 22 includes a first connecting pipe 23 and several second connecting pipes 24. Each second connecting pipe 24 is located between the cooling tank 25 and the housing 1. One end of each second connecting pipe 24 is connected to an adjacent connecting through hole 14, and the other end of each second connecting pipe 24 is connected to one end of the first connecting pipe 23. The other end of the first connecting pipe 23 passes through the cooling tank 25 and connects to the oil injection through hole 17. Each second connecting pipe 24 is equipped with an electrically controlled valve (not shown in the figure). A first pump body 21 is installed on the first connecting pipe 23. A controller is electrically connected to each electrically controlled valve. The controller is used to control at least one electrically controlled valve in the adjacent area of ​​abnormal oil temperature to open and to open the first pump body 21, so that vegetable oil in the area of ​​abnormal oil temperature enters the first connecting pipe 23 through the adjacent second connecting pipe 24 for cooling. The number of second connecting pipes 24 is equal to the number of connecting through holes 14. Each second connecting pipe 24 opens and closes through the electrically controlled valve, cooperating with the first pump body 21 to control each connecting through hole 14 to draw vegetable oil along the horizontal plane.

[0034] Specifically, the controller determines whether each oil temperature data point exceeds a first warning value. When any oil temperature data point is greater than or equal to the first warning value, the electrically controlled valves of the first sensor adjacent to that oil temperature data point open, and the first pump body 21 opens, so that each connecting through-hole 14 simultaneously draws vegetable oil with an oil temperature greater than or equal to the first warning value. When the oil temperature data point is less than the first warning value, the controller determines whether the oil temperature data point is greater than or equal to a second warning value. When the oil temperature data point is greater than or equal to the second warning value, one of the electrically controlled valves of the first sensor adjacent to that oil temperature data point opens, and the first pump body 21 opens, so that one of the connecting through-holes 14 draws vegetable oil with an oil temperature greater than or equal to the second warning value. When the oil temperature data point is less than the second warning value, all electrically controlled valves close. The location of the first temperature sensor is determined based on the oil temperature data, and the number of connecting through-holes 14 opened is controlled according to the specific temperature data to ensure heat dissipation while avoiding overuse and reducing energy consumption.

[0035] A water inlet pipe 26, a second pump body, and at least one water outlet pipe 27 are provided on the outside of the cooling tank 25. One end of the water inlet pipe 26 is connected to an external water source, and the other end of the water inlet pipe 26 is connected to the cooling tank 25. The second pump body (not shown in the figure) is located on the water inlet pipe 26. One end of each water outlet pipe 27 is connected to the inside of the cooling tank 25, and the other end of each water outlet pipe 27 is equipped with a nozzle 28. Each nozzle 28 surrounds the tank body 1. A controller is electrically connected to the second pump body and is used to control the second pump body to pressurize the cooling tank 25, so that the pressure drives the water to spray water out of the tank body 1 through each water outlet pipe 27 and each nozzle 28. The nozzles 28 are designed to assist in the external heat dissipation of the tank body 1.

[0036] Specifically, the coolant in the cooling tank 25 is water.

[0037] Heat sinks 15 are installed on the outside of the housing 1; a second temperature sensor (not shown in the figure) is installed inside the cooling tank 25. The controller is electrically connected to the second temperature sensor, which is used to acquire water temperature data inside the cooling tank 25 and send it to the controller. The controller is used to control the second pump body according to the water temperature data to keep the water temperature inside the cooling tank 25 below the preset water temperature. The normal combination of air cooling and water cooling ensures the overall heat dissipation efficiency.

[0038] Several telescopic tubes 16 and an adjustment mechanism 3 are respectively installed inside the housing 1. Each telescopic tube 16 is vertically arranged and surrounds the transformer body 11. The end of each telescopic tube 16 away from the housing cover 13 is connected to the adjacent connecting through hole 14. The adjustment mechanism 3 is located on the side of the housing cover 13 facing the transformer body 11. The adjustment mechanism 3 is electrically connected to a controller, which controls the adjustment mechanism 3 according to the oil temperature data, so that the adjustment mechanism 3 controls the horizontal height of each telescopic tube 16 at the connection point of the receiving space 12. The cooperation between the adjustment mechanism 3 and each telescopic tube 16 can extract vegetable oil from the plane and increase the extraction of vegetable oil from different vertical heights, thereby improving the cooling efficiency.

[0039] Specifically, the controller is also used to acquire the types and locations of each component within the accommodating space 12. Based on the component type, location, and each first sensor, it determines the weight value of each first sensor. It then determines the oil temperature data based on the real-time oil temperature detected by each first sensor and the weight values. The oil temperature data is equal to the real-time oil temperature detected by the first sensor multiplied by the weight value of the component adjacent to that first sensor. Since different components operate at different temperatures, cooling cannot be based solely on oil temperature; it needs to be corrected for the real-time oil temperature using weight values. For example, if the normal operating temperature of component A is 20 degrees Celsius and the normal operating temperature of component B is 40 degrees Celsius, and component A is heated to 40 degrees Celsius while component B is heated to 45 degrees Celsius, without weight value correction, only component B will be cooled. However, with weight value correction, component A will be cooled.

[0040] The adjustment mechanism 3 includes an electric lifting device 31, a connecting rod 32, and a connecting frame 33. The connecting rod 32 and the connecting frame 33 are both located within the accommodating space 12. The connecting frame 33 is arranged around the transformer body 11 and is connected to the end of each telescopic tube 16 near the tank cover 13. The connecting rod 32 is located between the connecting frame 33 and the tank cover 13, and the end of the connecting rod 32 away from the tank cover 13 is connected to the connecting frame 33. The electric lifting device 31 is located on the side of the tank cover 13 away from the accommodating space 12. The output end of the electric lifting device 31 passes through the tank cover 13 and is connected to the end of the connecting rod 32 away from the connecting frame 33. The controller is electrically connected to the electric lifting device 31 and is used to control the electric lifting device 31 according to the oil temperature data to drive the connecting rod 32 to pull the connecting frame 33, so that the connecting frame 33 pulls the end of each telescopic tube 16 near the tank cover 13 to move vertically up and down. The electric lifting device 31, through the cooperation of the connecting rod 32 and the connecting frame 33, can lift and lower each telescopic tube 16, thereby adjusting the height at which each telescopic tube 16 extracts vegetable oil.

[0041] Specifically, the connecting frame 33 is arranged around the transformer body 11.

[0042] Each telescopic pipe 16 is positioned so that the end near the tank cover 13 faces the transformer body 11. The transformer body 11 is for accommodating personnel in the space 12. The end of each telescopic pipe 16 near the tank cover 13 is an oil extraction port, which faces the transformer body 11 and can quickly extract vegetable oil with abnormal oil temperature.

[0043] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A vegetable oil-based heat dissipation transformer, characterized in that, The system includes a housing, a transformer body, a cooling mechanism, and a controller. The housing has an internal space containing several first temperature sensors. The housing accommodates the transformer body. The top side of the housing has an inlet / outlet connected to the internal space. A cover is provided at the inlet / outlet, and the cover has an oil filling hole to seal the inlet / outlet. Several connecting holes are provided on the side of the housing away from the cover, each connecting hole connecting to the internal space and surrounding the transformer body. The cooling mechanism is connected to each of the connecting holes and the oil filling hole. The controller is electrically connected to the cooling mechanism and each of the first temperature sensors. Each first temperature sensor acquires oil temperature data for each area within the internal space and sends it to the controller. The controller is used to determine the abnormal oil temperature area in the containment space based on the oil temperature data, and then control the cooling mechanism to extract and cool the vegetable oil in the abnormal oil temperature area through at least one connecting through hole adjacent to the abnormal oil temperature area, so that the cooled vegetable oil enters the containment space through the oil injection through hole. The housing is equipped with several telescopic tubes and an adjustment mechanism. Each telescopic tube is vertically arranged and surrounds the transformer body. The end of each telescopic tube away from the housing cover is connected to the adjacent connecting through hole. The adjustment mechanism is located on the side of the housing cover facing the transformer body. The adjustment mechanism is electrically connected to the controller. The controller is used to control the adjustment mechanism according to the oil temperature data so that the adjustment mechanism controls the horizontal height of each telescopic tube at the connection point of the accommodating space.

2. The vegetable oil heat dissipation medium transformer according to claim 1, characterized in that, The cooling mechanism includes a first pump body, connecting pipes, and a cooling tank. The cooling tank is located on the side of the tank body away from the tank cover and is used to contain coolant. One end of the connecting pipe is connected to each of the connecting through holes, and the other end of the connecting pipe passes through the cooling tank and connects to the oil injection through hole. The first pump body is located on the connecting pipe and outside the cooling tank. The controller is electrically connected to the first pump body and is used to control the first pump body so that the vegetable oil in the containing space passes through each of the connecting through holes, is cooled by the cooling tank along the connecting pipe, and then enters the containing space through the oil injection through hole.

3. A vegetable oil heat dissipation medium transformer according to claim 2, characterized in that, The connecting pipeline includes a first connecting pipe and a plurality of second connecting pipes. Each second connecting pipe is located between the cooling tank and the tank body. One end of each second connecting pipe is connected to an adjacent connecting through hole, and the other end of each second connecting pipe is connected to one end of the first connecting pipe. The other end of the first connecting pipe passes through the cooling tank and is connected to the oil injection through hole. Each second connecting pipe is equipped with an electrically controlled valve. The first pump body is disposed on the first connecting pipe. The controller is electrically connected to each of the electrically controlled valves. The controller is used to control at least one of the electrically controlled valves in the vicinity of the abnormal oil temperature zone to open and to open the first pump body, so that the vegetable oil in the abnormal oil temperature zone enters the first connecting pipe through the adjacent second connecting pipe for cooling; the number of the second connecting pipes is equal to the number of the connecting through holes.

4. A vegetable oil heat dissipation medium transformer according to claim 2, characterized in that, The cooling tank is provided with an inlet pipe, a second pump body, and at least one outlet pipe on its outer side. One end of the inlet pipe is connected to an external water source, and the other end of the inlet pipe is connected to the cooling tank. The second pump body is located on the inlet pipe. One end of each outlet pipe is connected to the inside of the cooling tank, and the other end of each outlet pipe is provided with a nozzle. Each nozzle surrounds the tank. The controller is electrically connected to the second pump body and is used to control the second pump body to pressurize the cooling tank, so that the pressure drives the water to be sprayed out of the tank through each outlet pipe and each nozzle in sequence.

5. A vegetable oil heat dissipation medium transformer according to claim 4, characterized in that, The outer side of the housing is provided with heat sinks; a second temperature sensor is provided inside the cooling tank, and the controller is electrically connected to the second temperature sensor. The second temperature sensor is used to acquire water temperature data in the cooling tank and send it to the controller; the controller is used to control the second pump body according to the water temperature data so that the water temperature in the cooling tank is lower than the preset water temperature.

6. A vegetable oil heat dissipation dielectric transformer according to any one of claims 1-5, characterized in that, The adjustment mechanism includes an electrically controlled lift, a connecting rod, and a connecting frame. The connecting rod and the connecting frame are both disposed within the accommodating space. The connecting frame surrounds the transformer body and is connected to the ends of each telescopic tube near the tank cover. The connecting rod is located between the connecting frame and the tank cover, with its end away from the tank cover connected to the connecting frame. The electrically controlled lift is disposed on the side of the tank cover opposite to the accommodating space, and its output end passes through the tank cover and connects to the end of the connecting rod away from the connecting frame. A controller is electrically connected to the electrically controlled lift and is used to control the electrically controlled lift based on the oil temperature data, driving the connecting rod to pull the connecting frame, thereby causing the connecting frame to pull the ends of each telescopic tube near the tank cover vertically up and down.

7. A vegetable oil heat dissipation medium transformer according to claim 6, characterized in that, The end of each telescopic tube near the tank cover is positioned facing the transformer body.

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