A heat dissipation mechanism for a box-type transformer

Abstract

The utility model discloses a heat abstractor for box -type transformer, including box transformer shell, the exhaust port inside that box transformer shell lower extreme is all equipped with filter plate, still include heat abstractor component, heat abstractor component: it includes plugging mechanism, gas collecting hood, heat abstractor pipeline and back type pipeline, the upper end of box transformer shell inside is equipped with support plate, the upside of support plate is provided with back type pipeline, and the air inlet of back type pipeline left end is equipped with heat abstractor pipeline, and the left side wall of box transformer shell is penetrated to the left end of heat abstractor pipeline, the middle part of support plate is equipped with gas collecting hood, and the right end of back type pipeline is cooperatively set up with gas collecting hood, and the lower side wall of gas collecting hood is equipped with the air outlet that evenly distributes, the middle part of back type pipeline is equipped with detachable filter screen, this heat abstractor for box -type transformer, through initiative heat abstractor airflow channel and the cooperation of plugging mechanism of filter screen can be replaced on line, need not to stop machine and replace filter screen, avoid the heat abstractor interruption caused by filter screen cleaning.

Description

Technical Field

[0001] This utility model relates to the field of box-type transformer technology, specifically a heat dissipation mechanism for box-type transformers. Background Technology

[0002] In power systems, box-type transformers are widely used in urban power grid transformation, industrial park power supply and other scenarios due to their high integration, small footprint and convenient installation. Since the electrical components inside the box-type transformer will continuously generate heat during operation, if the heat cannot be dissipated in time, the equipment temperature will rise, which will affect the transformer's operating efficiency, service life and even cause safety accidents. Therefore, an efficient heat dissipation mechanism is a key component to ensure the stable operation of the box-type transformer. Currently, the common heat dissipation mechanisms for box-type transformers mainly rely on natural heat dissipation or forced heat dissipation with axial flow fans. Natural heat dissipation mainly relies on the metal material of the box-type transformer shell to exchange heat with the outside air, while forced heat dissipation uses fans to draw outside air into the box, pass through the transformer components, and then exhaust it through the exhaust vents, thereby achieving heat transfer. Some heat dissipation mechanisms also have filters installed at the air inlets to block dust and debris in the air and prevent them from entering the box and adhering to the electrical components. However, existing heat dissipation mechanisms have significant shortcomings in practical applications. On the one hand, natural heat dissipation is inefficient, and when the transformer is under high load, it is difficult to dissipate heat quickly, causing the temperature inside the box to rise continuously. On the other hand, the filter screen at the air inlet is easily clogged with dust after long-term use, affecting airflow. Cleaning or replacing the filter screen often requires stopping the machine, which not only interrupts the heat dissipation process but may also affect the stability of the entire power supply system, increasing maintenance costs and the risk of power outages. Therefore, we propose a heat dissipation mechanism for box-type transformers. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a heat dissipation mechanism for box-type transformers. The sealing mechanism with online filter replacement allows the machine to be replaced without stopping, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a heat dissipation mechanism for a box-type transformer, including a box-type transformer housing, wherein each of the exhaust vents at the lower end of the box-type transformer housing is provided with a filter plate, and further includes a heat dissipation component; The heat dissipation assembly includes a sealing mechanism, a gas collection hood, a heat dissipation pipe, and a loop pipe. A support plate is located at the upper part of the transformer substation's interior. The loop pipe is positioned on the upper side of the support plate. A heat dissipation pipe is located at the air inlet at the left end of the loop pipe, and the left end of the heat dissipation pipe penetrates the left side wall of the transformer substation's interior. A gas collection hood is located in the middle of the support plate, and it is fitted to the right end of the loop pipe. Evenly distributed air vents are located on the lower side wall of the gas collection hood. A removable filter screen is located in the middle of the loop pipe. The sealing mechanism is located on the left side of the loop pipe. Through the active heat dissipation airflow channel and the online filter-replaceable sealing mechanism, filter replacement can be performed without stopping the system, avoiding heat dissipation interruption due to filter cleaning.

[0005] Furthermore, a control switch is provided on the front side of the transformer substation housing. The input terminal of the control switch is electrically connected to an external power source for stable control.

[0006] Furthermore, the sealing mechanism includes a stepped ring and a rubber plug. The stepped ring is respectively disposed on the front and rear sides of the left end of the loop-shaped pipe, and the rubber plug is respectively disposed on the front and rear sides of the left end of the loop-shaped pipe and cooperates with the adjacent stepped rings to seal the passage inside the loop-shaped pipe.

[0007] Furthermore, the plugging mechanism also includes strip-shaped openings, movable plates, and rubber sleeves. The movable plates are respectively disposed on opposite outer sides of the two rubber plugs. The left side of the outer arc surface of the left end of the U-shaped pipe has symmetrically distributed strip-shaped openings. The left ends of the movable plates are all located inside the adjacent strip-shaped openings on the left. Rubber sleeves are provided between the front and rear inner walls of the strip-shaped openings. The left ends of the movable plates are fixedly connected to the middle of the adjacent rubber sleeves on the left, so that the rubber plugs can move.

[0008] Furthermore, the sealing mechanism also includes a lead screw and a mounting plate. The mounting plates are respectively disposed on the outer arc surface of the left end of the loop pipe. The lead screw is rotatably connected between the opposite inner surfaces of two adjacent mounting plates. The left end of the moving plate is threadedly connected to the lead screw adjacent to the left side, so that the moving plate can move.

[0009] Furthermore, the sealing mechanism also includes a motor, which is installed on the sides of the two mounting plates at the frontmost and rearmost sides away from the center of the transformer housing. The output shaft of the motor is fixedly connected to the center of the end face of the adjacent lead screws at the front and rear sides away from the center of the transformer housing. The input end of the motor is electrically connected to the output end of the control switch for stable driving.

[0010] Furthermore, the heat dissipation assembly also includes a fan, which is installed on the upper side of the support plate. The fan's air intake is fixedly connected to the exhaust pipe on the right side of the loop pipe, and the fan's air outlet is fixedly connected to the upper end of the air collection hood. The fan's input end is electrically connected to the output end of the control switch to facilitate air exhaust.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This heat dissipation mechanism for box-type transformers has the following advantages: This heat dissipation component, through the cooperation of a fan, a U-shaped duct, and a gas collection hood, forms an active heat dissipation airflow channel. External air is drawn in through the heat dissipation duct and filtered by the filter screen. Then, it is forced to dissipate heat into the interior of the box-type transformer through the uniform air outlets of the gas collection hood, significantly improving heat dissipation efficiency. The design of the sealing mechanism and the removable filter screen allows the motor-driven screw to switch the opening and closing of the front and rear passages of the U-shaped duct without stopping the machine, enabling online replacement of the filter screen and avoiding heat dissipation interruption due to cleaning the filter screen. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural schematic diagram of the front cross-section of the transformer substation housing of this utility model; Figure 3 This is a schematic plan view of the front cross-section of the transformer substation housing of this utility model. Figure 4 This is a structural schematic diagram of the upper cross-section of the transformer substation housing of this utility model; Figure 5 This is a structural schematic diagram of the top sectional view of the loop-shaped pipe of this utility model; Figure 6 This is an enlarged structural schematic diagram of point A of this utility model; Figure 7 This is a partial cross-sectional view of the U-shaped pipe of this utility model.

[0013] In the diagram: 1. Transformer housing, 2. Heat dissipation assembly, 21. Sealing mechanism, 211. Step ring, 212. Rubber plug, 213. Strip opening, 214. Moving plate, 215. Rubber sleeve, 216. Screw, 217. Mounting plate, 218. Motor, 22. Gas collection hood, 23. Heat dissipation pipe, 24. Loop pipe, 25. Fan, 3. Filter plate, 4. Control switch, 5. Support plate, 6. Filter screen. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-6This embodiment provides a technical solution: a heat dissipation mechanism for a box-type transformer, including a box-type transformer housing 1. The upper side wall of the box-type transformer housing 1 is hinged to a replacement door. A door lock is provided at the end of the replacement door away from the hinge and where it fits against the upper side wall of the box-type transformer housing 1. The door lock adopts a conventional closing structure and is used to lock and open the replacement door. A control switch 4 is provided on the front side of the box-type transformer housing 1. The input end of the control switch 4 is electrically connected to an external power supply. The exhaust vents opened at the lower end of the box-type transformer housing 1 are all equipped with filter plates 3. It also includes a heat dissipation component 2. Heat dissipation component 2: It includes a sealing mechanism 21, a gas collecting hood 22, a heat dissipation pipe 23, and a loop pipe 24. A support plate 5 is provided at the upper end of the interior of the transformer substation housing 1. The loop pipe 24 is located on the upper side of the support plate 5. A heat dissipation pipe 23 is provided at the air inlet at the left end of the loop pipe 24. The left end of the heat dissipation pipe 23 penetrates the left side wall of the transformer substation housing 1. A gas collecting hood 22 is provided in the middle of the support plate 5. The gas collecting hood 22 is configured to cooperate with the right end of the loop pipe 24. The lower side wall of the gas collecting hood 22 has evenly distributed air outlets. A removable filter screen 6 is provided in the middle of the loop pipe 24 (the filter screen 6 is connected to the middle of the loop pipe 24 by a flange connection). The sealing mechanism 21 is located on the left side of the loop pipe 24. The sealing mechanism 21 includes a stepped ring 211 and rubber. The plug 212 and the stepped ring 211 are respectively disposed on the front and rear sides of the left end of the loop pipe 24. The rubber plug 212 is disposed on the front and rear sides of the left end of the loop pipe 24 and is configured to cooperate with the adjacent stepped rings 211. The blocking mechanism 21 also includes a strip-shaped opening 213, a movable plate 214 and a rubber sleeve 215. The movable plate 214 is disposed on the opposite outer sides of the two rubber plugs 212. The left side of the outer arc surface of the left end of the loop pipe 24 has symmetrically distributed strip-shaped openings 213. The left end of the movable plate 214 is located inside the adjacent strip-shaped opening 213 on the left. A rubber sleeve 215 is provided between the front and rear inner walls of the strip-shaped opening 213. The left end of the movable plate 214 is fixedly connected to the middle of the adjacent rubber sleeve 215 on the left. The 1 also includes a lead screw 216 and a mounting plate 217. The mounting plates 217 are respectively set on the outer arc surface of the left end of the U-shaped pipe 24. The lead screw 216 is rotatably connected between the opposite inner surfaces of two adjacent mounting plates 217. The left end of the moving plate 214 is threadedly connected to the lead screw 216 on the left side (corrugated pipes are provided between the front and rear sides of the moving plate 214 and the adjacent mounting plates 217, and the lead screw 216 is located inside the adjacent corrugated pipes, which provide external protection for the lead screw 216). The sealing mechanism 21 also includes a motor 218. The motor 218 is respectively installed on the side of the two mounting plates 217 on the front and rear sides away from the center of the transformer housing 1. The output shaft of the motor 218 is connected to the lead screw 216 on the front and rear sides away from the center of the transformer housing 1. The heat dissipation assembly 2 also includes a fan 25, which is installed on the upper side of the support plate 5. The fan 25's air intake is fixedly connected to the exhaust pipe on the right side of the return pipe 24, and the fan 25's air outlet is fixedly connected to the upper end of the air collection hood 22. The fan 25's input is electrically connected to the output of the control switch 4. The fan 25 is operated by the control switch 4. The fan 25's air intake is fixedly connected to the exhaust pipe on the right side of the return pipe 24, and the air outlet is connected to the upper end of the air collection hood 22, forming a closed airflow channel. When the fan 25 is running, the air at the air intake is thrown out due to centrifugal force, forming a partial vacuum, which forces the air in the return pipe 24 to flow towards the air intake.This creates an active air intake effect. External air is drawn into the duct 24 through the heat dissipation duct 23, filtered by the filter screen 6, and then drawn in and pressurized by the fan 25. The pressurized air is then blown at high speed through the air outlet of the air collection hood 22 into the interior of the box-type transformer and discharged through the filter plate 3 of the exhaust port. During this process, the channels at both ends of the duct 24 are separated by the blocking mechanism 21, with only one channel (either the front or rear end) participating in airflow. After the front filter screen 6 has been filtering dust for a period of time, it needs to be replaced. At this time, the worker operates the control switch 4 to start the front motor 218. The output shaft of the front motor 218 drives the front lead screw 216 to rotate. At this time, through the threaded engagement between the lead screw 216 and the front moving plate 214, the front moving plate 214 moves towards the rear end of the duct 24. The front moving plate 214 drives the front... The rubber plug 212 is inserted until it enters the interior of the front stepped ring 211 and seals it. At this time, the front channel of the loop pipe 24 is blocked, and the worker can replace the front filter screen 6. Simultaneously, the output shaft of the rear motor 218 drives the rear lead screw 216 to rotate. At this time, through the threaded engagement between the lead screw 216 and the rear moving plate 214, the rear moving plate 214 moves towards the rear end of the loop pipe 24. The rear moving plate 214 drives the rear rubber plug 212 until it moves away from the interior of the rear stepped ring 211. At this time, the rear channel of the loop pipe 24 is opened, forming a passage. The air of the heat dissipation pipe 23 passes through the rear channel of the loop pipe 24. The rear filter screen 6 participates in the dust filtration work. When the filter screen 6 has accumulated too much dust and needs to be replaced, it can be replaced without stopping the heat dissipation work.

[0016] The working principle of the heat dissipation mechanism for a box-type transformer provided by this utility model is as follows: The fan 25 is operated by the control switch 4. The air intake of the fan 25 is fixedly connected to the exhaust pipe on the right side of the loop-shaped pipe 24, and the air outlet is connected to the upper end of the air collection hood 22, forming a closed airflow channel. When the fan 25 operates, the air at the air intake is thrown out due to centrifugal force, forming a partial vacuum, which forces the air in the loop-shaped pipe 24 to flow towards the air intake, thereby producing an active suction effect. External air is drawn into the loop-shaped pipe 24 through the heat dissipation pipe 23, and after being filtered by the filter screen 6, it is... The fan 25 draws in and pressurizes the air. The pressurized air is then blown at high speed through the air outlet of the air collection hood 22 into the interior of the box-type transformer and discharged through the filter plate 3 of the exhaust port. During this process, the channels at both ends of the loop pipe 24 are separated by the blocking mechanism 21, allowing only one channel (either the front or rear end) to participate in airflow. After the front filter 6 has been filtering dust for a period of time, it needs to be replaced. At this time, the worker operates the control switch 4 to start the front motor 218. The output shaft of the front motor 218 drives the front lead screw 216 to rotate. With the threaded engagement of 216 and the front movable plate 214, the front movable plate 214 moves towards the rear end of the loop pipe 24. The front movable plate 214 drives the front rubber plug 212 until the front rubber plug 212 enters the front stepped ring 211 and seals it. At this time, the front channel of the loop pipe 24 is blocked, and the worker can replace the front filter 6 (the worker opens the replacement door, reaches into the inside of the transformer housing 1, and uses tools to disassemble the flange connection between the front filter 6 and the front pipe body of the loop pipe 24, and then replaces the front filter 6). At the same time, the output shaft of the rear motor 218 drives the rear lead screw 216 to rotate. At this time, through the threaded engagement between the lead screw 216 and the rear moving plate 214, the rear moving plate 214 moves towards the rear end of the loop pipe 24. The rear moving plate 214 drives the rear rubber plug 212 until the rear rubber plug 212 moves away from the interior of the rear stepped ring 211. At this time, the rear channel of the loop pipe 24 is opened, forming a passage. The air of the heat dissipation pipe 23 passes through the rear channel of the loop pipe 24, and the rear filter screen 6 participates in the dust filtration work.

[0017] It is worth noting that the motor 218 disclosed in the above embodiments can be model Y90S-4, the fan 25 can be model T35-11, and the control switch 4 is provided with control buttons that correspond one-to-one with the motor 218 and the fan 25 and are used to control their switching.

[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A heat dissipation mechanism for a box-type transformer, comprising a box transformer shell (1), a filter plate (3) is arranged inside the air outlet at the lower end of the box transformer shell (1), characterized in that: It also includes heat dissipation components (2); Heat dissipation assembly (2): It includes a sealing mechanism (21), a gas collection hood (22), a heat dissipation pipe (23), and a loop pipe (24). The upper part of the transformer housing (1) is provided with a support plate (5). The loop pipe (24) is located on the upper side of the support plate (5). The air inlet at the left end of the loop pipe (24) is provided with a heat dissipation pipe (23). The left end of the heat dissipation pipe (23) penetrates the left side wall of the transformer housing (1). The middle part of the support plate (5) is provided with a gas collection hood (22). The gas collection hood (22) is matched with the right end of the loop pipe (24). The lower side wall of the gas collection hood (22) is provided with evenly distributed air outlets. The middle part of the loop pipe (24) is provided with a detachable filter screen (6). The sealing mechanism (21) is located on the left side of the loop pipe (24).

2. The heat dissipating mechanism for the box-type transformer according to claim 1, characterized in that: The front side of the transformer substation housing (1) is provided with a control switch (4), and the input end of the control switch (4) is electrically connected to an external power source.

3. The heat dissipating mechanism for the box-type transformer according to claim 2, wherein: The sealing mechanism (21) includes a step ring (211) and a rubber plug (212). The step ring (211) is respectively located on the front and rear sides of the left end of the loop pipe (24), and the rubber plug (212) is respectively located on the front and rear sides of the left end of the loop pipe (24) and is configured to cooperate with the adjacent step rings (211).

4. The heat dissipating mechanism for the box-type transformer according to claim 3, wherein: The plugging mechanism (21) also includes a strip opening (213), a movable plate (214), and a rubber sleeve (215). The movable plate (214) is respectively disposed on the opposite outer side of the two rubber plugs (212). The left side of the outer arc surface of the left end of the U-shaped pipe (24) has symmetrically distributed strip openings (213). The left end of the movable plate (214) is located inside the adjacent strip opening (213) on the left. A rubber sleeve (215) is provided between the front and rear inner walls of the strip opening (213). The left end of the movable plate (214) is fixedly connected to the middle of the adjacent rubber sleeve (215) on the left.

5. A heat dissipating mechanism for a box-type transformer according to claim 4, wherein: The sealing mechanism (21) also includes a lead screw (216) and a mounting plate (217). The mounting plates (217) are respectively set on the outer arc surface of the left end of the loop pipe (24). The lead screw (216) is rotatably connected between the relative inner surfaces of two adjacent mounting plates (217). The left end of the moving plate (214) is threadedly connected to the lead screw (216) on the left side.

6. A heat dissipating mechanism for a box-type transformer according to claim 5, wherein: The sealing mechanism (21) also includes a motor (218). The motor (218) is installed on the side of the two mounting plates (217) at the front and rear sides away from the center of the transformer housing (1). The output shaft of the motor (218) is fixedly connected to the center of the end face of the adjacent lead screw (216) away from the center of the transformer housing (1). The input end of the motor (218) is electrically connected to the output end of the control switch (4).

7. The heat dissipating mechanism for the box-type transformer according to claim 2, wherein: The heat dissipation assembly (2) also includes a fan (25), which is installed on the upper side of the support plate (5). The air inlet of the fan (25) is fixedly connected to the exhaust pipe on the right side of the loop pipe (24), and the air outlet of the fan (25) is fixedly connected to the upper end of the air collection hood (22). The input end of the fan (25) is electrically connected to the output end of the control switch (4).

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