Power transformer heat dissipation device with alarm function

Abstract

The invention belongs to the technical field of transformer heat dissipation, and particularly relates to a power transformer heat dissipation device with an alarm function, which comprises a protection assembly, an adjusting device is mounted in an inner cavity on one side of the protection assembly, a heat dissipation assembly is mounted on the adjusting device, and the adjusting device can drive the heat dissipation assembly to slide up and down in the height direction of the protection assembly. The heat dissipation assembly can slide up and down in the shell through cooperation of a linear motor sliding rail and a linear sliding block, a corrugated pipe is arranged on the heat dissipation assembly in a communicating mode, and the exhaust end of the corrugated pipe is movably arranged in a hole formed in the intersection position of sliding holes formed in the longitudinal swing plate and the transverse swing plate in a penetrating mode. The multiple sections of meshing teeth arranged on the vertical plate are matched with the gear to drive the exhaust end of the corrugated pipe to swing up and down, meanwhile, the sliding ring arranged on the insulation guide rod in a sleeving mode is matched with the linkage rod to drive the exhaust end of the corrugated pipe to swing left and right, cold air is evenly dispersed to all positions of the shell, and it is ensured that electric appliance elements in the shell are evenly cooled.

Description

Technical Field

[0001] This invention belongs to the field of transformer heat dissipation technology, specifically relating to a power transformer heat dissipation device with alarm function. Background Technology

[0002] A power transformer is an electrical device used to change voltage, transforming a given AC voltage (current) into one or more different voltages (currents) at the same frequency. It has two or more windings and, in order to transmit electrical energy, converts the AC voltage and current of one system into the voltage and current of another system through electromagnetic induction at the same frequency.

[0003] Transformers integrate a large number of electrical components, generating a significant amount of heat during operation. To prevent excessive internal temperatures and maintain the lifespan of these components, power transformers typically employ oil immersion cooling or air cooling. Air cooling of transformers usually involves installing fans to accelerate airflow within the transformer. However, existing air-cooling fans are generally fixed in place, meaning they can only blow directly onto the electrical components in front of them, preventing them from reaching components in other locations. This results in uneven heat dissipation in existing air-cooling structures, significantly reducing the efficiency of heat dissipation for the electrical components. Summary of the Invention

[0004] The purpose of this invention is to provide a power transformer heat dissipation device with alarm function that is simple in structure and reasonably designed in order to solve the above problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A power transformer heat dissipation device with alarm function includes a protective component. An adjusting device is installed in the inner cavity of one side of the protective component. The heat dissipation component is installed on the adjusting device. The adjusting device can drive the heat dissipation component to slide down along the height direction of the protective component. A bellows is connected to the exhaust end of the heat dissipation component. A swinging mechanism is installed on the side of the adjusting device away from the heat dissipation component to drive the free end of the bellows to swing. A first linkage structure is provided between the swinging mechanism and the adjusting device to drive the free end of the bellows to swing up and down. A second linkage structure is installed on the first linkage structure to drive the free end of the bellows to swing left and right. An alarm device is also installed on the protective component to remind the user when the temperature inside the protective component is too high.

[0006] As a further optimization of the present invention, the protective component includes a housing, on which heat dissipation fins are fixedly connected to the outer walls at both ends. An air intake shroud communicating with the inside of the housing is provided on one side of the housing, and an air intake hole is provided on the side wall of the air intake shroud. An exhaust hole is provided on the other side wall of the housing.

[0007] As a further optimization of the present invention, the adjustment device includes a linear motor slide rail disposed within the housing, the end of the linear motor slide rail being fixedly connected to the inner wall of the housing, a linear slider being mounted on the linear motor slide rail, a connecting plate being fixedly mounted on the side wall of the linear slider, and a guide rod being fixedly connected within the housing and arranged parallel to the linear motor slide rail, with the end of the connecting plate away from the linear slider being slidably sleeved on the guide rod.

[0008] As a further optimization of the present invention, the heat dissipation assembly includes an air intake hood fixedly installed on the side of the connecting plate near the air inlet. A fan blade is provided inside the air intake hood. A support frame is fixedly connected to the open end of the air intake hood. A motor for driving the fan blade to rotate is fixedly installed on the support frame. A connection hole is provided on the side wall of the air intake hood connected to the connecting plate.

[0009] As a further optimization of the present invention, the swing mechanism includes a mounting plate aligned with the suction hood. The mounting plate and the suction hood are symmetrically distributed on both sides of the connecting plate. The side of the mounting plate closest to the suction hood is fixed to the connecting plate via an ear plate. The side of the mounting plate away from the ear plate is rotatably connected to a longitudinal swing plate and a transverse swing plate with a semi-circular structure. The longitudinal swing plate and the transverse swing plate are perpendicular to each other. Both the longitudinal swing plate and the transverse swing plate are provided with sliding holes. The end of the corrugated pipe away from the suction hood passes through the gap formed by the intersection of the two sliding holes. A limit ring is fixedly connected to the end of the corrugated pipe.

[0010] As a further optimization of the present invention, a connecting shaft is fixedly passed through both ends of the longitudinal swing plate. The end of the connecting shaft away from the longitudinal swing plate is rotatably connected to the mounting plate. A torsion spring is sleeved on the connecting shaft. The two ends of the torsion spring are fixed to the mounting plate and the longitudinal swing plate, respectively. A gear is fixedly connected to the end of the connecting shaft located outside the longitudinal swing plate. The first linkage structure includes a vertical plate installed on one side of the gear. The vertical plate is provided with multiple meshing teeth. When the gear moves to align with the meshing teeth, it can mesh with the meshing teeth.

[0011] As a further optimization of the present invention, the second linkage structure includes a crossbeam fixedly connected to both ends of the upright plate, an insulating guide rod with an "S"-shaped structure fixedly installed between the two crossbeams, a slip ring slidably sleeved on the insulating guide rod, a linkage rod fixedly connected to the side of the slip ring near the transverse swing plate, and the end of the linkage rod rotatably connected to the transverse swing plate.

[0012] As a further optimization of the present invention, a sealing structure is provided both inside the air intake shroud and outside the exhaust port. The sealing structure includes a sealing slide plate slidably connected to the inner cavity of the air intake shroud, a slide rod slidably passing through the sealing slide plate, a support bar fixedly connected to the outer end of the air intake shroud, one end of the slide rod being fixed to the support bar, a spring being sleeved on the slide rod between the support bar and the sealing slide plate, the two ends of the spring being connected to the support bar and the sealing slide plate respectively, when the spring is in an extended state, the sealing slide plate is located inside the air intake port, and when the spring is in a compressed state, the sealing slide plate is located outside the air intake port. The sealing structure also includes a flap disposed outside the exhaust port, the top of the flap being rotatably connected to the side wall of the housing via a hinge.

[0013] As a further optimization of the present invention, a wheel frame is fixedly installed on the side of the connecting plate near the sealing slide plate, and a silent wheel is rotatably connected to the free end of the wheel frame. The silent wheel abuts against the sealing slide plate, and a receiving groove for accommodating the wheel frame and the silent wheel is provided on the inner wall of the top of the housing.

[0014] As a further optimization of the present invention, the alarm device includes a temperature sensor fixedly installed on the housing, the detection end of the temperature sensor extending into the housing, and an alarm electrically connected to the temperature sensor is also installed on the housing.

[0015] The beneficial effects of this invention are as follows: 1. The heat dissipation component can slide up and down inside the housing via a linear motor slide rail and a linear slider. A bellows is connected to the heat dissipation component. The exhaust end of the bellows is movably inserted into the gap formed by the intersection of the sliding holes on the longitudinal swing plate and the transverse swing plate. When the heat dissipation component slides up and down, the multi-segment meshing gear on the vertical plate drives the exhaust end of the bellows to swing up and down. At the same time, the slip ring sleeved on the insulating guide rod and the linkage rod drive the exhaust end of the bellows to swing left and right, so as to evenly distribute the cold air to various positions in the housing and ensure uniform heat dissipation for the electrical components inside the housing.

[0016] 2. When heat dissipation is not required, the linear motor slide rail drives the linear slider to slide upwards, moving the silent wheel into the receiving groove. At this time, the sealing slide plate loses the support of the silent wheel and slides down to the inside of the air inlet under the push of the spring, so that the air inlet is not connected to the inside of the housing, and no more airflow is generated inside the housing. The flap will also flip downwards under its own gravity, covering the exhaust port. This can minimize the possibility of external dust or moisture entering the housing through the air inlet and exhaust ports, thus preventing it from affecting the operation of the electrical components inside the housing.

[0017] 3. When the temperature sensor detects that the temperature inside the housing is too high, the controller will activate the alarm to sound, reminding staff to check the working status of the electrical components inside the housing, which greatly improves safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of one side of the overall structure of the present invention; Figure 2 This is a schematic diagram of the other side of the overall structure of the present invention; Figure 3 This is the present invention. Figure 1 A schematic diagram of the cross-sectional structure; Figure 4 This is a schematic diagram of the installation of the heat dissipation component and the adjustment component of the present invention; Figure 5 This is a schematic diagram of the installation of the swing mechanism and adjustment components of the present invention; Figure 6 This is a front view of the heat dissipation component of the present invention. Figure 7 This is a schematic diagram of the back structure of the heat dissipation component of the present invention. Figure 8 This is a schematic diagram showing the connection between the swing mechanism of the present invention and the first linkage structure and the second linkage structure; Figure 9 This is the present invention. Figure 8 Enlarged view of a close-up detail at point A in the middle; Figure 10 This is a schematic diagram showing the connection between the bellows and the swing mechanism of the present invention; Figure 11 This is the present invention. Figure 10 A schematic diagram of the cross-sectional structure; Figure 12 This is a schematic diagram of the installation of the sealing slide plate of the present invention.

[0019] In the diagram: 101, Housing; 102, Heat dissipation fins; 103, Air intake shroud; 104, Air intake port; 105, Exhaust port; 201, Linear motor slide rail; 202, Linear slider; 203, Connecting plate; 204, Guide rod; 301, Suction shroud; 302, Support frame; 303, Motor; 304, Fan blade; 305, Connecting hole; 401, Bellows; 402, Connector; 403, Limiting ring; 501, Mounting plate; 502, Ear plate; 503, Longitudinal swing plate; 504. Horizontal swing plate; 505, sliding hole; 601, connecting shaft; 602, gear; 603, torsion spring; 604, vertical plate; 605, meshing gear; 701, crossbeam; 702, insulating guide rod; 703, linkage rod; 704, slip ring; 801, sealing slide plate; 802, sliding rod; 803, support bar; 804, spring; 805, flip plate; 806, ramp; 901, wheel frame; 902, silent wheel; 903, receiving groove; 1001, temperature sensor; 1002, alarm. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content. Example

[0021] like Figure 1 - Figure 12 As shown, a power transformer heat dissipation device with alarm function includes a housing 101. Heat dissipation fins 102 are fixedly connected to the outer walls at both ends of the housing 101. The housing 101 exchanges heat with the air through the heat dissipation fins 102. An air inlet hood 103 communicating with the inside of the housing 101 is provided on one side of the housing 101. An air inlet hole 104 is provided on the side wall of the air inlet hood 103. An exhaust hole 105 is provided on the other side wall of the housing 101. External air can enter the housing 101 through the air inlet hole 104 and be discharged along the exhaust hole 105. Filter screens are installed in both the air inlet hole 104 and the exhaust hole 105. The filter screens can prevent floating objects in the air from entering the housing 101.

[0022] A linear motor slide rail 201 (the linear motor slide rail 201 is an electric slide rail, which is the prior art) is installed in the inner cavity of one side of the housing 101. The end of the linear motor slide rail 201 is fixedly connected to the inner wall of the housing 101. A linear slider 202 is installed on the linear motor slide rail 201. A connecting plate 203 is fixedly installed on the side wall of the linear slider 202. When the linear motor slide rail 201 is started, the linear motor slide rail 201 can drive the linear slider 202 to move the connecting plate 203 up and down, thereby adjusting the position of the connecting plate 203. A guide rod 204 is also fixedly connected inside the housing 101 and is arranged parallel to the linear motor slide rail 201. The end of the connecting plate 203 away from the linear slider 202 is slidably sleeved on the guide rod 204. The guide rod 204 can support and guide the connecting plate 203.

[0023] An air intake hood 301 is fixedly installed on the side of the connecting plate 203 near the air inlet 104. A fan blade 304 is installed inside the air intake hood 301. A support frame 302 is fixedly connected to the open end of the air intake hood 301. A motor 303 for driving the fan blade 304 to rotate is fixedly installed on the support frame 302. A connection hole 305 is opened on the side wall of the air intake hood 301 that connects to the connecting plate 203. A corrugated pipe 401 slides through the connecting plate 203. Connectors are installed at both ends of the corrugated pipe 401. 402 and limit ring 403, one end of bellows 401 is connected to the air intake hood 301 through connector 402 and connecting hole 305. When motor 303 starts and drives fan blade 304 to rotate at high speed, it can introduce low temperature air from the external environment into bellows 401 through air intake hole 104 and discharge it into housing 101. Under air pressure, high temperature air in housing 101 is discharged through exhaust hole 105, thereby providing air cooling for electrical components installed in housing 101.

[0024] A mounting plate 501 is fixedly connected to the side of the connecting plate 203 away from the suction hood 301 via an ear plate 502. A longitudinal swing plate 503 and a transverse swing plate 504 with a semi-circular structure are rotatably connected to the side of the mounting plate 501 away from the ear plate 502. The longitudinal swing plate 503 and the transverse swing plate 504 are perpendicular to each other. Both the longitudinal swing plate 503 and the transverse swing plate 504 are provided with sliding holes 505. A gap is formed at the intersection of the two sliding holes 505. One end of the bellows 401 connected to the limiting ring 403 slides through the gap through the longitudinal swing plate 503 and the transverse swing plate 504, so that when the longitudinal swing plate 503 rotates, it can drive the end of the bellows 401 connected to the limiting ring 403 to swing up and down. When the transverse swing plate 504 rotates, it can drive the end of the bellows 401 connected to the limiting ring 403 to swing left and right.

[0025] Both ends of the longitudinal swing plate 503 are fixedly connected to the connecting shaft 601. The end of the connecting shaft 601 away from the longitudinal swing plate 503 is rotatably connected to the mounting plate 501. A torsion spring 603 is sleeved on the connecting shaft 601. Both ends of the torsion spring 603 are fixed to the mounting plate 501 and the longitudinal swing plate 503 respectively. When the longitudinal swing plate 503 is oscillating under force, it will cause the torsion spring 603 to twist. When the external force disappears, the longitudinal swing plate 503 will return to its original position under the elastic force of the torsion spring 603.

[0026] A gear 602 is fixedly connected to one end of the connecting shaft 601 located outside the longitudinal swing plate 503. A vertically installed upright plate 604 is provided on one side of the gear 602. The end of the upright plate 604 is fixedly connected to the inner wall of the housing 101. Multiple meshing teeth 605 are provided on the upright plate 604. When the gear 602 moves to be aligned with the meshing teeth 605, it can mesh with the meshing teeth 605. When the gear 602 moves down with the connecting plate 203, it can drive the longitudinal swing plate 503 to swing downward through the meshing teeth 605. When the gear 602 moves up with the connecting plate 203, it can drive the longitudinal swing plate 503 to swing upward. The upright plate 604 is fixedly connected to two crossbeams 701 at both ends. An insulating guide rod 702 with an "S" shape is fixedly installed between the two crossbeams 701. A slip ring 704 is slidably sleeved on the insulating guide rod 702. A linkage rod 703 is fixedly connected to the side of the slip ring 704 near the transverse swing plate 504. The end of the linkage rod 703 away from the slip ring 704 is rotatably connected to the transverse swing plate 504. When the slip ring 704 moves up and down with the connecting plate 203, the transverse swing plate 504 can be pushed to swing left and right by the insulating guide rod 702 with the slip ring 704 and the linkage rod 703. This, in conjunction with the linear motor slide rail 201 and the linear slider 202, drives the bellows 401 to move up and down, so that the cold air is evenly distributed to various positions of the housing 101, ensuring uniform heat dissipation for the electrical components inside the housing 101.

[0027] Both the inside of the air intake shroud 103 and the outside of the exhaust port 105 are equipped with sealing structures. The sealing structure inside the air intake shroud 103 includes a sealing slide plate 801 slidably connected to the inner cavity of the air intake shroud 103. A slide rod 802 is slidably mounted on the sealing slide plate 801. A support bar 803 is fixedly connected to the outer end of the air intake shroud 103. One end of the slide rod 802 is fixed to the support bar 803. A spring 804 is sleeved on the slide rod 802 between the support bar 803 and the sealing slide plate 801. The two ends of the spring 804 are respectively connected to the support bar 803 and the sealing slide plate 801. When spring 804 is in the extended state, sealing plate 801 is located inside air inlet 104. When spring 804 is in the compressed state, sealing plate 801 is located outside air inlet 104. A wheel frame 901 is fixedly installed on the side of connecting plate 203 near sealing plate 801. A silent wheel 902 is rotatably connected to the free end of wheel frame 901. The silent wheel 902 abuts against sealing plate 801. A receiving groove 903 is provided on the inner wall of the top of housing 101 to accommodate wheel frame 901 and silent wheel 902. When heat dissipation is not required, wheel frame 901 and silent wheel 902 are... All 902 are accommodated within the receiving groove 903. At this time, the sealing slide plate 801 loses the support of the silent wheel 902 and slides down to the inside of the air inlet 104 under the elastic force of the spring 804. The air inlet 104 cannot communicate with the inside of the housing 101, preventing dust and moisture from the external environment from entering the housing 101 through the air inlet 104. When heat dissipation is required, the connecting plate 203 slides up and down with the linear slider 202, thereby driving the wheel frame 901 and the silent wheel 902 to slide up and down within the height range of the sealing slide plate 801. The sealing slide plate 801 relies on... A ramp 806 is provided on one side near the receiving groove 903. The ramp 806 facilitates the transition, allowing the silent wheel 902 to slide out of the receiving groove 903 and abut against the sealing plate 801. After the silent wheel 902 slides out of the receiving groove 903, it pushes the sealing plate 801 to slide towards the support bar 803, compressing the spring 804 and causing the sealing plate 801 to be located outside the air inlet 104. At this time, the air inlet 104 is connected to the inside of the housing 101, which is used to cooperate with the high-speed rotating fan blade 304 to draw in cold air into the housing 101. The sealing structure outside the exhaust port 105 includes a flap 805 disposed outside the exhaust port 105. The top of the flap 805 is rotatably connected to the side wall of the housing 101 via a hinge. When not dissipating heat, the flap 805 adheres to the exhaust port 105 under its own weight, sealing the exhaust port 105. When dissipating heat, the air that needs to be discharged from the exhaust port 105 will push the flap 805 to flip and open the exhaust port 105 for ventilation.

[0028] A temperature sensor 1001 and an alarm 1002 are fixedly installed on the housing 101. The detection end of the temperature sensor 1001 extends into the housing 101. The temperature sensor 1001 and the alarm 1002 are electrically connected. A controller (which is prior art and not shown in the figure) is also installed on the housing 101. When the temperature sensor 1001 detects that the internal temperature of the housing 101 is high and needs to be dissipated, the controller controls the linear motor slide rail 201 and the motor 303 to be energized for heat dissipation. When the internal temperature of the housing 101 reaches the alarm value, the controller immediately controls the alarm 1002 to be energized to sound an alarm and remotely transmits the alarm information to the external control station to remind the staff in the vicinity and the workstation.

[0029] It should be noted that in this power transformer heat dissipation device with alarm function, when the temperature sensor 1001 detects that the temperature inside the housing 101 is too high, the controller immediately controls the linear motor slide rail 201 to be energized. The linear motor slide rail 201 drives the linear slider 202 to slide out of the receiving groove 903, and uses the connecting plate 203 to drive the wheel frame 901 and the silent wheel 902 to slide up and down within the height range of the sealing slide plate 801. After the silent wheel 902 slides out of the receiving groove 903, it will push the sealing slide plate 801 towards the support. When the strip 803 slides in the direction of compression, the spring 804 contracts, so that the sealing slide plate 801 is located outside the air inlet 104. At this time, the air inlet 104 is connected to the inside of the housing 101. At the same time, the motor 303 is powered on to drive the fan blade 304 to rotate at high speed, drawing cold air from the external environment into the bellows 401 and discharging it into the housing 101 along the bellows 401. Meanwhile, the flap 805 flips up under the action of airflow to open the exhaust port 105, discharging the high-temperature air inside the housing 101, thereby achieving heat dissipation for the electrical components installed inside the housing 101. A mounting plate 501 is fixedly connected to the side of the connecting plate 203 away from the intake hood 301 via an ear plate 502. A longitudinal swing plate 503 and a transverse swing plate 504 are rotatably connected to the side of the mounting plate 501 away from the ear plate 502. Both the longitudinal and transverse swing plates 503 and 504 have sliding holes 505. A gap is formed at the intersection of the two sliding holes 505. The exhaust end of the bellows 401 slides through this gap and is limited by a limiting ring 403. When the connecting plate 203 slides up and down, the gear 602 can engage with the gear 602 via meshing teeth 605. The longitudinal swing plate 503 swings up and down, causing the exhaust end of the bellows 401 to swing up and down. When the slip ring 704, which is sleeved on the insulating guide rod 702, moves up and down with the connecting plate 203, it can push the transverse swing plate 504 to swing left and right through the "S"-shaped insulating guide rod 702 in conjunction with the linkage rod 703, so as to evenly distribute the cold air to various positions of the housing 101, ensuring uniform heat dissipation for the electrical components inside the housing 101. This avoids the problem that the existing edge-delayed air-cooling structure can only blow directly onto the electrical components in front of it, resulting in uneven heat dissipation and affecting the heat dissipation efficiency.

[0030] When the temperature sensor 1001 detects a decrease in the temperature inside the housing 101 and indicates that further heat dissipation is no longer necessary, the controller first cuts off the power to the motor 303, and then controls the linear motor slide rail 201 to drive the linear slider 202 upward until the silent wheel 902 slides into the receiving groove 903. At this time, the sealing slide plate 801 loses the support of the silent wheel 902 and slides down to the inside of the air inlet 104 under the pushing action of the spring 804, so that the air inlet 104 is not connected to the inside of the housing 101, and no more airflow is generated inside the housing 101. The flip plate 805 will also flip downward under its own gravity and cover the exhaust port 105, which can minimize the entry of external dust or moisture into the housing 101 through the air inlet 104 or the exhaust port 105, and prevent it from affecting the operation of the electrical components inside the housing 101.

[0031] When the temperature sensor 1001 detects that the temperature inside the housing 101 is too high and reaches the alarm value, the controller will control the alarm 1002 to start and sound an alarm, and remotely transmit the alarm information to the external control station to remind the staff to check the working status of the electrical components inside the housing 101 in time.

[0032] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A heat dissipation device for a power transformer with an alarm function, comprising protective components, characterized in that: An adjustment device is installed in the inner cavity of one side of the protective component. A heat dissipation component is installed on the adjustment device. The adjustment device can drive the heat dissipation component to slide down along the height direction of the protective component. A bellows (401) is connected to the exhaust end of the heat dissipation component. A swinging mechanism is installed on the side of the adjustment device away from the heat dissipation component to drive the free end of the bellows (401) to swing. A first linkage structure is provided between the swinging mechanism and the adjustment device to drive the free end of the bellows (401) to swing up and down. A second linkage structure is installed on the first linkage structure to drive the free end of the bellows (401) to swing left and right. An alarm device is also installed on the protective component to remind when the temperature inside the protective component is too high.

2. The power transformer heat dissipation device with alarm function according to claim 1, characterized in that: The protective assembly includes a housing (101), on which heat dissipation fins (102) are fixedly connected to the outer walls at both ends. An air intake hood (103) communicating with the inside of the housing (101) is provided on one side of the housing (101). An air intake hole (104) is provided on the side wall of the air intake hood (103), and an exhaust hole (105) is provided on the other side wall of the housing (101).

3. A power transformer heat dissipation device with alarm function according to claim 2, characterized in that: The adjustment device includes a linear motor slide rail (201) disposed inside the housing (101), the end of the linear motor slide rail (201) being fixedly connected to the inner wall of the housing (101), a linear slider (202) being mounted on the linear motor slide rail (201), a connecting plate (203) being fixedly mounted on the side wall of the linear slider (202), and a guide rod (204) being fixedly connected inside the housing (101) and arranged parallel to the linear motor slide rail (201), with one end of the connecting plate (203) away from the linear slider (202) being slidably sleeved on the guide rod (204).

4. A power transformer heat dissipation device with alarm function according to claim 3, characterized in that: The heat dissipation assembly includes an air intake hood (301) fixedly installed on the side of the connecting plate (203) near the air inlet (104). A fan blade (304) is provided inside the air intake hood (301). A support frame (302) is fixedly connected to the open end of the air intake hood (301). A motor (303) for driving the fan blade (304) to rotate is fixedly installed on the support frame (302). A connection hole (305) is provided on the side wall of the air intake hood (301) connected to the connecting plate (203).

5. A power transformer heat dissipation device with alarm function according to claim 4, characterized in that: The swing mechanism includes a mounting plate (501) aligned with the suction hood (301). The mounting plate (501) and the suction hood (301) are symmetrically distributed on both sides of the connecting plate (203). The side of the mounting plate (501) closest to the suction hood (301) is fixed to the connecting plate (203) via an ear plate (502). The side of the mounting plate (501) furthest from the ear plate (502) is rotatably connected to a longitudinally swinging mechanism with a semi-circular structure. The longitudinal swing plate (503) and the transverse swing plate (504) are perpendicular to each other. The longitudinal swing plate (503) and the transverse swing plate (504) are both provided with sliding holes (505). The end of the bellows (401) away from the air intake hood (301) passes through the gap formed by the intersection of the two sliding holes (505). The end of the bellows (401) is fixedly connected to a limit ring (403).

6. A power transformer heat dissipation device with alarm function according to claim 5, characterized in that: Both ends of the longitudinal swing plate (503) are fixedly provided with connecting shafts (601). The end of the connecting shaft (601) away from the longitudinal swing plate (503) is rotatably connected to the mounting plate (501). A torsion spring (603) is sleeved on the connecting shaft (601). The two ends of the torsion spring (603) are fixed to the mounting plate (501) and the longitudinal swing plate (503) respectively. A gear (602) is fixedly connected to the end of the connecting shaft (601) located outside the longitudinal swing plate (503). The first linkage structure includes a vertical plate (604) vertically installed on one side of the gear (602). The vertical plate (604) is provided with multiple meshing teeth (605). When the gear (602) moves to align with the meshing teeth (605), it meshes with the meshing teeth (605).

7. A power transformer heat dissipation device with alarm function according to claim 6, characterized in that: The second linkage structure includes a crossbeam (701) fixedly connected to both ends of the upright plate (604), and an insulating guide rod (702) with an "S"-shaped structure fixedly installed between the two crossbeams (701). A slip ring (704) is slidably sleeved on the insulating guide rod (702). A linkage rod (703) is fixedly connected to the side of the slip ring (704) near the transverse swing plate (504). The end of the linkage rod (703) is rotatably connected to the transverse swing plate (504).

8. A power transformer heat dissipation device with alarm function according to claim 2, characterized in that: Both the air intake hood (103) and the exhaust port (105) are provided with sealing structures. The sealing structures include a sealing slide plate (801) slidably connected to the inner cavity of the air intake hood (103), a slide rod (802) slidably passing through the sealing slide plate (801), a support bar (803) fixedly connected to the outer end of the air intake hood (103), one end of the slide rod (802) being fixed to the support bar (803), and a spring (804) sleeved on the slide rod (802). The two ends of the spring (804) are... The sealing structure is connected to the support bar (803) and the sealing slide plate (801) respectively. When the spring (804) is in the extended state, the sealing slide plate (801) is located inside the air inlet (104). When the spring (804) is in the compressed state, the sealing slide plate (801) is located outside the air inlet (104). The sealing structure also includes a flap (805) disposed outside the exhaust hole (105). The top of the flap (805) is rotatably connected to the side wall of the housing (101) by a hinge.

9. A power transformer heat dissipation device with alarm function according to claim 8, characterized in that: A wheel frame (901) is fixedly installed on the side of the connecting plate (203) near the sealing slide plate (801). A silent wheel (902) is rotatably connected to the free end of the wheel frame (901). The silent wheel (902) abuts against the sealing slide plate (801). A receiving groove (903) for accommodating the wheel frame (901) and the silent wheel (902) is provided on the inner wall of the top of the housing (101).

10. A power transformer heat dissipation device with alarm function according to claim 2, characterized in that: The alarm device includes a temperature sensor (1001) fixedly installed on the housing (101), the detection end of the temperature sensor (1001) extending into the housing (101), and an alarm (1002) electrically connected to the temperature sensor (1001) is also installed on the housing (101).

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