Oil-immersed transformer with cooling fin detection device

Abstract

The invention relates to the technical field of transformers, in particular to an oil-immersed transformer with a cooling fin detection device. Comprising a transformer body, the transformer body communicates with a plurality of cooling fins, the transformer further comprises a detection mechanism arranged on the cooling fins, the detection mechanism comprises a telescopic rod fixedly connected to the cooling fins in a penetrating mode, the telescopic end of the telescopic rod is fixedly connected with a first magnetic sheet, an electric rail is installed on the transformer body, and a sliding block is slidably connected into the electric rail; the sliding block is fixedly connected with a piston rod, and the piston end of the piston rod is fixedly connected with a second magnetic sheet. Through the design of the detection mechanism, the cooling effect of each cooling fin can be detected in real time, when a large amount of accumulated dust or impurities exist on the cooling fins, the temperature of insulating oil in the cooling fins affects the telescopic rod so that the telescopic end of the telescopic rod can extend, and the piston end of the piston rod can make contact with the sensor through repulsive force between the first magnetic sheet and the second magnetic sheet; therefore, the position of the high-temperature cooling fin is accurately detected, and the cooling fin is cleaned in cooperation with the cleaning mechanism.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and more particularly to an oil-immersed transformer with a heat sink detection device. Background Technology

[0002] Power transformers play a vital role in modern power systems. They are not only core equipment for power transmission and distribution, but also key factors in ensuring the stable operation of power systems, providing solid support for the economic development and people's lives in modern society.

[0003] The most common type of transformer in daily life is the oil-immersed transformer located outdoors. Heat sinks are connected to the transformer box to achieve auxiliary heat dissipation. When outdoor dust or lint and other debris fall on the heat sinks, it will reduce the ventilation effect between the heat sinks, significantly reduce the heat dissipation efficiency of the heat sinks, and trigger a series of chain reactions such as a reduction in the insulation life of the transformer. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides an oil-immersed transformer with a heat sink detection device.

[0005] The technical implementation scheme of the present invention is as follows: an oil-immersed transformer with a heat sink detection device includes a transformer body, a plurality of heat sinks connected on the transformer body, and a detection mechanism disposed on the heat sinks. The detection mechanism includes a telescopic rod that passes through and is fixed to the heat sinks. A first magnetic plate is fixedly connected to the telescopic end of the telescopic rod. An electric track is installed on the transformer body. A slider is slidably connected in the electric track. A piston rod is fixedly connected to the slider. A second magnetic plate is fixedly connected to the piston end of the piston rod. A sensor that cooperates with the piston end is installed in the fixed end of the piston rod. The electric track is electrically connected to the sensor. A cleaning mechanism that works in conjunction with the detection mechanism is provided on the heat sinks.

[0006] More preferably, the cleaning mechanism includes a U-shaped frame disposed above the heat sink and fixedly connected to the transformer body, a sliding frame slidably connected on the U-shaped frame along the front-back direction, and a pair of brush rollers rotatably connected through the sliding frame.

[0007] More preferably, the cleaning mechanism further includes a connecting rod fixed to the U-shaped frame, an electric push rod electrically connected to the sensor is mounted on the slider, and a U-shaped plate that cooperates with the connecting rod is fixed to the telescopic end of the electric push rod.

[0008] More preferably, the cleaning mechanism further includes a friction wheel fixed to the brush roller shaft, the friction wheel rubbing against the U-shaped frame.

[0009] More preferably, it also includes a multi-functional mechanism disposed on the transformer body. The multi-functional mechanism includes a first corrugated pipe disposed above the heat sink and fixedly connected to the transformer body. The first corrugated pipe is fixedly connected to the connecting rod. A vertical pipe and a pair of multi-functional pipes are connected to the first corrugated pipe. A rainwater tank is fixedly connected to the transformer body. A liquid infusion pipe is connected to the bottom of the rainwater tank. The vertical pipe is connected to the liquid infusion pipe.

[0010] More preferably, when the cleaning mechanism cleans the heat sink, the multi-functional mechanism can use rainwater to rinse or blow the heat sink.

[0011] More preferably, a cutting rod is slidably connected through the vertical tube.

[0012] More preferably, the cutting rod and the connecting rod are slidably connected through each other, and a friction plate that rubs against the cutting rod is fixedly attached to the connecting rod.

[0013] More preferably, the multifunctional tube has a sealing block that is elastically slidably connected inside.

[0014] More preferably, a second corrugated pipe is provided below the first corrugated pipe and is fixedly connected to the transformer body. The second corrugated pipe is fixedly connected to the connecting rod, and an air inlet valve and a pair of purge pipes are connected to the second corrugated pipe.

[0015] Compared with the prior art, the present invention has the following advantages: 1. This invention, through the design of the detection mechanism, can detect the heat dissipation effect of each heat sink in real time. When there is a large amount of dust or impurities on the heat sink, the temperature of the insulating oil inside the heat sink affects the telescopic rod, causing the telescopic end of the telescopic rod to extend. Through the repulsive force between the first magnetic sheet and the second magnetic sheet, the piston end of the piston rod contacts the sensor, thereby accurately detecting the position of the high-temperature heat sink and working with the cleaning mechanism to clean the heat sink.

[0016] 2. Through the design of the multi-functional mechanism, when the rainwater tank is empty, the contraction of the first corrugated pipe allows the multi-functional pipe to blow air out to clean the heat sink, improving the cleaning effect on the heat sink. When the rainwater tank is filled with rainwater, the contraction of the first corrugated pipe allows the multi-functional pipe to spray rainwater onto the heat sink, further improving the cleaning effect on the heat sink.

[0017] 3. By setting up a purge pipe, when the multi-functional pipe sprays rainwater onto the heat sink, the purge pipe blows air onto the heat sink, which can prevent rainwater from staying on the heat sink for a long time and causing corrosion of the outer wall of the heat sink. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the detection mechanism of the present invention; Figure 3 This is a schematic diagram of the installation of the first magnetic sheet in this invention; Figure 4 This is a schematic diagram of the cleaning mechanism of the present invention; Figure 5 This is a schematic diagram of the installation of the friction wheel in this invention; Figure 6 This is a schematic diagram of the structure of the multifunctional mechanism of the present invention; Figure 7 This is a schematic diagram of the installation of the vertical pipe of the present invention; Figure 8 This is a schematic diagram of the installation of the cutting rod in this invention; Figure 9 This is a schematic diagram of the installation of the friction plate of the present invention; Figure 10 This is a schematic diagram of the installation of the sealing block of the present invention; Figure 11 This is a schematic diagram of the installation of the purge pipe of the present invention.

[0019] The above-mentioned figures include the following reference numerals: 1. Transformer body; 101. Heat sink; 201. Telescopic rod; 202. First magnetic plate; 203. Electric track; 204. Slider; 205. Piston rod; 206. Second magnetic plate; 207. Sensor; 301. U-shaped frame; 302. Sliding frame; 303. Brush roller; 401. Connecting rod; 402. Electric push rod; 403. U-shaped plate; 404. Friction wheel; 501. First corrugated pipe; 502. Vertical pipe; 503. Multifunctional pipe; 504. Rainwater tank; 505. Infusion pipe; 601. Cut-off rod; 701. Friction plate; 801. Sealing block; 901. Second corrugated pipe; 902. Air inlet valve; 903. Purge pipe. Detailed Implementation

[0020] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes. Example

[0021] An oil-immersed transformer with a heat sink detection device, such as Figures 1-5As shown, the device includes a transformer body 1, on which several heat sinks 101 are connected. It also includes a detection mechanism mounted on each heat sink 101. The detection mechanism is used to detect the heat dissipation effect of each heat sink 101. The detection mechanism includes a telescopic rod 201 obliquely penetrating and fixed to the heat sink 101. The inner cavity of the telescopic rod 201 is filled with thermally expanding gas. A first magnetic plate 202 is fixed to the telescopic end of the telescopic rod 201. An electric track 203 is installed on the top of the transformer body 1, and a slider 20 is slidably connected in the electric track 203 along the left-right direction. 4. A piston rod 205 is fixedly connected to the bottom of the slider 204. A second magnetic sheet 206 is fixedly connected to the piston end of the piston rod 205. The first magnetic sheet 202 and the second magnetic sheet 206 are magnetically repelled. A sensor 207 that cooperates with the piston end is installed in the fixed end of the piston rod 205. The electric track 203 is electrically connected to the sensor 207. When the piston end of the piston rod 205 contacts the sensor 207, the sensor 207 controls the electric track 203 to stop the slider 204 from sliding. A cleaning mechanism that works in conjunction with the detection mechanism is provided on the heat sink 101.

[0022] like Figure 4 and Figure 5 As shown, the cleaning mechanism includes a U-shaped frame 301 located above the heat sink 101 and fixed to the front side of the transformer body 1. A sliding frame 302 is slidably connected to the U-shaped frame 301 along the front-back direction. A pair of brush rollers 303 for cleaning the heat sink 101 are rotatably connected through the sliding frame 302.

[0023] like Figures 3-5 As shown, the cleaning mechanism also includes a connecting rod 401 fixed to the front side of the U-shaped frame 301, and an electric push rod 402 electrically connected to the sensor 207 is installed on the rear side of the slider 204. The telescopic end of the electric push rod 402 is fixed to a U-shaped plate 403 that cooperates with the connecting rod 401. When the telescopic end of the electric push rod 402 extends, it can push the connecting rod 401 through the U-shaped plate 403.

[0024] like Figure 5 As shown, the cleaning mechanism also includes a friction wheel 404 fixed to the top of the brush roller 303. The friction wheel 404 rubs against the U-shaped frame 301. When the connecting rod 401 moves, the friction between the friction wheel 404 and the U-shaped frame 301 can drive the brush roller 303 to rotate.

[0025] Initially, the telescopic ends of each telescopic rod 201 are in a retracted state. As the transformer body 1 gradually heats up, the temperature of the insulating oil inside the transformer body 1 changes. The high-temperature insulating oil, with a lower density, naturally rises within the transformer body 1 and enters the heat sink 101. After cooling, the insulating oil in the heat sink 101 cools down, its temperature decreases, and its density increases, causing it to naturally sink back into the transformer body 1. When the heat sink 101 provides good heat dissipation, the gas inside the telescopic rod 201 will not expand, and the telescopic ends of each telescopic rod 201 remain in a retracted state. The slider 204 is controlled by the electric track 203. Sliding left and right, slider 204 drives piston rod 205 and electric push rod 402 to move. Piston rod 205 drives second magnetic plate 206 to move. When second magnetic plate 206 moves above first magnetic plate 202, there is a large gap between first magnetic plate 202 and second magnetic plate 206. The repulsive force between first magnetic plate 202 and second magnetic plate 206 is insufficient to push second magnetic plate 206. When too much dust or impurities accumulate on one of the heat sinks 101, the heat dissipation efficiency of heat sink 101 decreases significantly, resulting in the inability to effectively reduce the temperature of insulating oil inside heat sink 101. The telescopic rod 201 inside heat sink 101... The gas inside the cavity expands due to the high temperature of the insulating oil, causing the telescopic end of the telescopic rod 201 to extend. The telescopic end of the telescopic rod 201 drives the first magnetic plate 202 to move. When the second magnetic plate 206 moves above the first magnetic plate 202, the gap between the first magnetic plate 202 and the second magnetic plate 206 shortens. The second magnetic plate 206, under the repulsive force of the first magnetic plate 202, causes the piston end of the piston rod 205 to retract. After the piston end of the piston rod 205 retracts, it contacts the sensor 207. The sensor 207 controls the slider 204 to stop sliding via the electric track 203. At this time, the U-shaped plate 403 is fitted onto the top of the corresponding connecting rod 401. Simultaneously, sensor 207 controls the telescopic end of electric push rod 402 to perform a telescopic movement. When the telescopic end of electric push rod 402 extends, the telescopic end of electric push rod 402 drives connecting rod 401 to move backward through U-shaped plate 403. Connecting rod 401 drives a pair of brush rollers 303 to move backward through sliding frame 302. Brush rollers 303 drive friction wheel 404 on them to move. Friction wheel 404 is rubbed by U-shaped frame 301 to drive brush roller 303 to rotate, so that brush roller 303 cleans the outer wall of heat sink 101, removes dust or impurities on heat sink 101, and restores the heat dissipation efficiency of heat sink 101. Example

[0026] like Figure 6 and Figure 7As shown, it also includes a multi-functional mechanism on the transformer body 1. The multi-functional mechanism includes a first corrugated pipe 501 located above the heat sink 101 and fixedly connected to the front side of the transformer body 1. The front end of the first corrugated pipe 501 is fixedly connected to the connecting rod 401. The top and front end of the first corrugated pipe 501 are respectively connected to a vertical pipe 502 and a pair of multi-functional pipes 503. A rainwater tank 504 is fixedly connected to the transformer body 1. A filter plate for filtering impurities is installed on the rainwater tank 504. Rainwater can pass through the filter plate and enter the rainwater tank 504. An infusion pipe 505 is connected to the bottom of the rainwater tank 504. The vertical pipe 502 is connected to the infusion pipe 505. When the cleaning mechanism cleans the heat sink 101, the multi-functional mechanism can use rainwater to rinse or blow the heat sink 101.

[0027] like Figure 7 and Figure 8 As shown, a cutting rod 601 is slidably connected through the vertical pipe 502. When the cutting rod 601 abuts against the inner wall of the vertical pipe 502, it can prevent rainwater in the first corrugated pipe 501 from flowing back through the vertical pipe 502.

[0028] like Figure 9 As shown, the cutting rod 601 and the connecting rod 401 are slidably connected through each other, and a friction plate 701 that rubs against the top of the cutting rod 601 is fixed on the connecting rod 401.

[0029] like Figure 10 As shown, a sealing block 801 is elastically slidably connected inside the multifunctional pipe 503. The sealing block 801 is used to prevent rainwater in the first corrugated pipe 501 from entering the multifunctional pipe 503 and causing leakage.

[0030] like Figure 11 As shown, a second corrugated pipe 901 is fixedly connected to the transformer body 1 below the first corrugated pipe 501. The front end of the second corrugated pipe 901 is fixedly connected to the connecting rod 401. The top and front end of the second corrugated pipe 901 are respectively connected to an air inlet valve 902 and a pair of purge pipes 903.

[0031] Initially, there is a gap between the cutting rod 601 and the inner wall of the vertical pipe 502, and the vertical pipe 502 is in communication with the corresponding first corrugated pipe 501. The sealing block 801 seals the connection between the multi-functional pipe 503 and the first corrugated pipe 501, allowing rainwater to fall into the rainwater tank 504 for storage. The multi-functional mechanism has two states: when the rainwater tank 504 is not filled with rainwater, the inner cavity of the first corrugated pipe 501 is connected to the rainwater tank 504 through the vertical pipe 502 and the infusion pipe 505. The rainwater tank 504 is equipped with a filter plate that is open to the atmosphere, so that the first corrugated pipe 501 is filled with air when it is not filled with rainwater. When the connecting rod 401 moves backward, the connecting rod 401 carries... The first corrugated pipe 501 retracts, causing the friction plate 701 to move. The friction plate 701, through friction with the cutting rod 601, causes the cutting rod 601 to slide backward. After sliding, the cutting rod 601 abuts against the inner wall of the vertical pipe 502, blocking the vertical pipe 502 and preventing the air in the first corrugated pipe 501 from being discharged through the vertical pipe 502. When the first corrugated pipe 501 retracts, it causes a pair of multi-functional pipes 503 on it to move, and compresses the air inside, causing the air to push the sealing block 801. The air enters the multi-functional pipe 503 through the sealing block 801 and is blown towards the heat sink 101 through the multi-functional pipe 503, thereby cleaning the heat sink 101 while blowing it, improving the cleaning effect.

[0032] When rainwater is stored in the rainwater tank 504, the rainwater enters the first corrugated pipe 501 through the infusion pipe 505 and the vertical pipe 502. The sealing block 801 seals the connection between the multi-functional pipe 503 and the first corrugated pipe 501, preventing rainwater from leaking through the multi-functional pipe 503. When the connecting rod 401 moves backward, the cutting rod 601 seals the vertical pipe 502, preventing the rainwater in the first corrugated pipe 501 from being discharged through the vertical pipe 502. The rainwater in the first corrugated pipe 501 squeezes the sealing block 801, causing the sealing block 801 to elastically contract and slide downward under force. The rainwater enters the multi-functional pipe 503 and is sprayed onto the heat sink 101 through the multi-functional pipe 503, cleaning and rinsing the heat sink 101 at the same time, further improving the cleaning effect.

[0033] Initially, the second corrugated pipe 901 is in an extended state. When the connecting rod 401 moves backward, the connecting rod 401 drives the second corrugated pipe 901 to contract. When the second corrugated pipe 901 contracts, it drives the pair of blow pipes 903 on it to move, and squeezes the air inside into the blow pipes 903 and blows it towards the heat sink 101 through the blow pipes 903. When the multi-functional pipe 503 blows out air, the blow pipes 903 simultaneously blow out air to further blow the heat sink 101. This not only blows away the accumulated dust and impurities from the heat sink 101, but also promotes the air circulation around the heat sink 101, improves the heat dissipation efficiency of the heat sink 101 in a short time, and makes the insulating oil inside cool down quickly. When the multi-functional pipe 503 sprays out rainwater, the blow pipes 903 simultaneously blow out air to blow away the rainwater attached to the heat sink 101, preventing the rainwater from staying on the heat sink 101 for a long time and causing the outer wall of the heat sink 101 to rust.

[0034] After the telescopic end of the electric push rod 402 is fully extended, the sealing block 801 loses the thrust of air or rainwater, and the sealing block 801 elastically releases and slides back to seal the connection between the multifunctional tube 503 and the first corrugated tube 501.

[0035] When the telescopic end of the electric push rod 402 retracts, the telescopic end of the electric push rod 402 drives the connecting rod 401 forward through the U-shaped plate 403. The connecting rod 401 drives a pair of brush rollers 303 forward through the sliding frame 302. The brush rollers 303 drive the friction wheel 404 on them to move. The friction wheel 404 is rubbed by the U-shaped frame 301, causing the brush rollers 303 to reverse. At the same time, the connecting rod 401 drives the first corrugated pipe 501 and the second corrugated pipe 901 to extend, and drives the friction plate 701 to move forward. The friction plate 701 rubs against the cutting rod 601. The movable cut-off rod 601 slides forward to reset, thereby connecting the vertical pipe 502 with the first corrugated pipe 501. When the first corrugated pipe 501 extends, the air or rainwater in the rainwater tank 504 is replenished into the first corrugated pipe 501 through the infusion pipe 505 and the vertical pipe 502. When the second corrugated pipe 901 extends, external air is replenished into the second corrugated pipe 901 through the air inlet valve 902. When the telescopic end of the electric push rod 402 is reset, the electric track 203 continues to control the slider 204 to slide, and the slider 204 drives the piston rod 205 and the electric push rod 402 to continue to move.

[0036] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of the invention. Therefore, the scope of the invention should be limited only by the appended claims.

Claims

1. An oil-immersed transformer with a heat sink detection device, comprising a transformer body (1), characterized in that: The transformer body (1) is connected to several heat sinks (101) and also includes a detection mechanism on the heat sinks (101). The detection mechanism includes a telescopic rod (201) that passes through and is fixed to the heat sink (101). A first magnetic plate (202) is fixed to the telescopic end of the telescopic rod (201). An electric track (203) is installed on the transformer body (1). A slider (204) is slidably connected in the electric track (203). A piston rod (205) is fixed to the slider (204). A second magnetic plate (206) is fixed to the piston end of the piston rod (205). A sensor (207) that cooperates with the piston end is installed in the fixed end of the piston rod (205). The electric track (203) is electrically connected to the sensor (207). A cleaning mechanism that works in conjunction with the detection mechanism is provided on the heat sink (101).

2. An oil-immersed transformer with a heat sink detection device according to claim 1, characterized in that: The cleaning mechanism includes a U-shaped frame (301) located above the heat sink (101) and fixed to the transformer body (1). A sliding frame (302) is slidably connected to the U-shaped frame (301) in the front-back direction. A pair of brush rollers (303) are rotatably connected through the sliding frame (302).

3. An oil-immersed transformer with a heat sink detection device according to claim 2, characterized in that: The cleaning mechanism also includes a connecting rod (401) fixed to the U-shaped frame (301), an electric push rod (402) electrically connected to the sensor (207) is mounted on the slider (204), and a U-shaped plate (403) that cooperates with the connecting rod (401) is fixed to the telescopic end of the electric push rod (402).

4. An oil-immersed transformer with a heat sink detection device according to claim 3, characterized in that: The cleaning mechanism also includes a friction wheel (404) fixed to the roller shaft of the brush roller (303), the friction wheel (404) rubbing against the U-shaped frame (301).

5. An oil-immersed transformer with a heat sink detection device according to claim 2, characterized in that: It also includes a multi-functional mechanism on the transformer body (1). The multi-functional mechanism includes a first corrugated pipe (501) located above the heat sink (101) and fixedly connected to the transformer body (1). The first corrugated pipe (501) is fixedly connected to the connecting rod (401). A vertical pipe (502) and a pair of multi-functional pipes (503) are connected to the first corrugated pipe (501). A rainwater tank (504) is fixedly connected to the transformer body (1). An infusion pipe (505) is connected to the bottom of the rainwater tank (504). The vertical pipe (502) is connected to the infusion pipe (505).

6. An oil-immersed transformer with a heat sink detection device according to claim 5, characterized in that: When the cleaning mechanism cleans the heat sink (101), the multi-functional mechanism can use rainwater to rinse the heat sink (101) or blow the heat sink (101).

7. An oil-immersed transformer with a heat sink detection device according to claim 5, characterized in that: A cutting rod (601) is slidably connected through the vertical tube (502).

8. An oil-immersed transformer with a heat sink detection device according to claim 7, characterized in that: The cutting rod (601) is slidably connected to the connecting rod (401) through the rod, and a friction plate (701) is fixedly connected to the connecting rod (401) to rub against the cutting rod (601).

9. An oil-immersed transformer with a heat sink detection device according to claim 5, characterized in that: The multifunctional tube (503) has a sealing block (801) that is elastically slidably connected inside.

10. An oil-immersed transformer with a heat sink detection device according to claim 5, characterized in that: Below the first bellows (501) is a second bellows (901) that is fixedly connected to the transformer body (1). The second bellows (901) is fixedly connected to the connecting rod (401). An air inlet valve (902) and a pair of purge pipes (903) are connected to the second bellows (901).

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