Dry-type transformer capable of preventing coil from loosening

Abstract

The invention discloses a dry type transformer capable of preventing a coil from loosening, relates to the technical field of transformers, and aims to solve the problems that in the working process of the transformer, due to the fact that the coil is heated during working, a metal conductor and an insulating material of the coil are expanded due to temperature rise, the clamping force of the coil in a winding disappears, and the coil is loosened. According to the dry-type transformer capable of preventing the coil from loosening, outer clamping plates and inner supporting plates are matched, in the winding coil fixing process, the inner supporting plates and the outer clamping plates clamp the inner side and the outer side of a winding in a staggered mode, a bidirectional screw drives a thread sleeve to be close to each other under rotation of a maintainer, and the thread sleeve is matched with the inclined faces of the outer sides of the outer clamping plates; and the inner supporting plate and the outer clamping plate are clamped in a staggered manner, so that a coil in the winding can only expand between the outer clamping plate and the inner supporting plate after being heated and deformed, and meanwhile, the outer clamping plate and the inner supporting plate ensure the clamping force to the winding, so that the winding coil is prevented from loosening.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, in particular to a dry-type transformer capable of preventing coils from loosening. Background Art

[0002] At present, transformers are electrical devices that use the principle of electromagnetic induction to change AC voltage. They can increase or decrease AC voltage to meet the needs of different power systems and electrical equipment. For example, in the process of power transmission, the lower voltage emitted by the power plant is increased by a step-up transformer to reduce line losses and improve transmission efficiency; at the user end, the high voltage is reduced to a voltage suitable for household and industrial use by a step-down transformer. Transformers play a vital role in the power system and are one of the key devices for achieving efficient transmission, distribution and use of electric energy. During the operation of the transformer, the coil will generate heat during operation. The increased temperature will cause the metal conductor and insulating material of the coil to expand. At this time, the clamping force of the coil in the winding disappears, causing the coil to loosen. Summary of the invention

[0003] To achieve the above objectives, the present invention is implemented through the following technical solutions: A dry-type transformer for preventing coil loosening, comprising: A housing, the housing having a frame supporting the structural assembly, air inlet slots being provided on both sides of the housing, and a heat dissipation slot being provided on the top of the outer side of the housing; A transformer mechanism, which is used to connect the circuit and perform voltage transformation, and is installed inside the housing; An air inlet mechanism, which is used to guide the air entering the transformer when the air flows, and the air inlet mechanism is symmetrically installed at the air inlet slot of the shell; A heat dissipation mechanism, which is used to drive air flow to remove heat from the inside of the transformer, and is installed at a heat dissipation slot of the housing; The cam is an assembly made of a plurality of plates, each of which is adapted to engage a plurality of guide rails and a plurality of guide rails, each of which is adapted to engage a plurality of guide rails. The plurality of plates are adapted to engage a plurality of guide rails, each of which is adapted to engage a plurality of guide rails. The maintenance personnel rotates the screw sleeve and drives it closer, so that the screw sleeve, with the cooperation of the outer inclined surface of the outer clamping plate, drives the outer clamping plate to move inward to clamp the winding, and the inner support plate and the outer clamping plate are staggered and clamped, so that the coil in the winding can only expand between the outer clamping plate and the inner support plate after being heated and deformed. At the same time, the outer clamping plate and the inner support plate ensure the clamping force of the winding to prevent the winding coil from loosening. A joint is fixedly installed on the top of the iron core, and the top of the joint passes through the shell and extends to its top, and a supporting chassis is rotatably installed on the bottom end of the bidirectional screw, and the bottom of the supporting chassis is fixedly connected to the top of the chassis through a connecting fastener, and there is a gap between the supporting chassis and the chassis. The restriction of the screw by the supporting chassis and the clamping plate can prevent the bidirectional screw and the screw sleeve from expanding outward to affect the clamping force of the winding. At the same time, during the working process, through the gap between the supporting chassis and the chassis, the air flowing upward from the bottom of the shell can better enter the inside and outside of the winding through the gap between the supporting chassis and the chassis, so as to drive the heat generated during the winding work and take away the heat more quickly and efficiently.

[0004] Preferably, the air inlet mechanism comprises a fixed inner frame and a fixed outer frame, the fixed inner frame being fixedly mounted at the air inlet slot of the shell and being located inside the shell, the fixed outer frame being fixedly mounted at the air inlet slot of the shell and being located outside the shell, an inner wall of the fixed inner frame being fixedly mounted with an air guide plate, a side of the air guide plate close to the fixed outer frame being an arc surface, and the arc surface of the air guide plate gradually approaches the fixed outer frame from top to bottom, an air guide block being fixedly mounted on the bottom of the inner wall of the fixed inner frame, and an air guide gap being present between the air guide block and the air guide plate, and the gap being smaller the farther the air guide gap is from the fixed outer frame, through the cooperation between the air guide plate and the air guide block, air can enter the interior of the shell from the bottom during the air intake process, so that the air can flow from bottom to top after entering the interior of the transformer shell, thereby more effectively driving the heat inside the transformer to be discharged, and at the same time the reduction of the gap accelerates the flow rate of the air, thereby increasing the wind force blowing inside.

[0005] Preferably, a rotating column is rotatably installed on the inner wall of the fixed outer frame, and the rotating column is evenly installed from top to bottom inside the fixed outer frame, and a vane is fixedly installed at the center position of the outer side of the rotating column, the vane position is fixed inside the outer frame, and an outer cover frame is fixedly installed on the outer side of the fixed outer frame, and an air inlet guide plate is fixedly installed on the inner wall of the outer cover frame, and the air inlet guide plate is evenly installed from top to bottom inside the outer cover frame, and one end of the air inlet guide plate away from the vane plate is inclined upward, and one end of the air inlet guide plate close to the vane plate is curled upward in an arc to form a groove, and the arc groove of the air inlet guide plate is matched with the gap between the vanes. During the process of air entering, the dust driven is blocked by the arc groove after being blown into the arc groove, and at the same time, debris is blocked by the gap between the vanes, so as to avoid debris entering the interior of the transformer during air flow, causing a short circuit in the transformer.

[0006] Preferably, the heat dissipation mechanism includes a connecting frame, which is fixedly installed at the heat dissipation groove of the shell, and an air outlet hood is fixedly installed on the outer end of the connecting frame away from the shell, and the outer side of the air outlet hood is evenly provided with heat conduction grooves, and the heat conduction grooves are located at both ends of the outer side of the air outlet hood, and a motor is fixedly installed on the outer side of the air outlet hood, and the output end of the motor passes through the air outlet hood and extends to the inside thereof, and the output end of the motor is connected to a transmission shaft through a coupling, and a heat dissipation fan is fixedly installed on the outer side of the transmission shaft, and the heat dissipation fan is symmetrically installed on the outer side of the transmission shaft along the center position, and the fan blade width of the heat dissipation fan gradually decreases from the center position to both sides, and the fan blades are A spiral plate, the heat dissipation fan is located between the heat conduction grooves of the air outlet hood, and the heat dissipation fan cooperates with the heat conduction grooves of the air outlet hood so that the heat dissipation fan cannot drive the air outside the air outlet hood to flow during rotation, so that the heat dissipation fan can only drive the air inside the air outlet hood to flow toward the heat conduction grooves, so that the heat dissipation fan can more effectively drive the air inside the transformer to flow, thereby improving the heat extraction efficiency. An air outlet plate is fixedly installed on the inner wall of the connecting frame, and the air outlet plate is symmetrically installed along the axis center position of the connecting frame, and the end of the air outlet plate away from the shell is inclined toward the center position, and inner guide blocks are fixedly installed between the air outlet plates, and the inner guide blocks are symmetrically installed along the axis center position.

[0007] The present invention provides a dry-type transformer that prevents coils from loosening. It has the following beneficial effects: 1. The dry-type transformer for preventing coil loosening has the outer clamping plate and the inner supporting plate cooperated to clamp the winding coil alternately on both sides of the inner and outer sides of the winding in the process of fixing the winding coil. The bidirectional screw is turned by the maintenance personnel to drive the screw sleeve to approach, so that the screw sleeve drives the outer clamping plate to move inward to clamp the winding with the cooperation of the outer inclined surface of the outer clamping plate. The inner supporting plate and the outer clamping plate are clamped alternately, so that the coil in the winding can only expand between the outer clamping plate and the inner supporting plate after being deformed by heat. At the same time, the outer clamping plate and the inner supporting plate ensure the clamping force on the winding to prevent the winding coil from loosening.

[0008] Second, the dry-type transformer that prevents coil loosening can limit the screw by supporting the chassis and the clamping plate, so as to avoid the outward expansion of the bidirectional screw and the screw sleeve, which would affect the clamping force on the winding. At the same time, during the working process, through the gap between the supporting chassis and the base frame, the air flowing upward from the bottom of the shell can better enter the inside and outside of the winding, drive the heat generated during the winding work, and take away the heat more quickly and efficiently.

[0009] 3. The dry-type transformer for preventing coil loosening can make the air enter the shell from the bottom during the air intake process through the cooperation between the air guide plate and the air guide block, so that the air can flow from bottom to top after entering the transformer shell, which can more effectively drive the heat inside the transformer to be discharged. At the same time, the reduction of the gap can accelerate the flow rate of the air and increase the wind force blowing inside.

[0010] Fourth, the dry-type transformer that prevents coil loosening cooperates with the arc-shaped groove of the air inlet guide plate and the gap between the blades. When air enters, the dust driven is blown into the arc-shaped groove and blocked by the arc-shaped groove. At the same time, the debris is blocked by the gap between the blades, so that debris is prevented from entering the transformer during air flow, causing the transformer to short-circuit.

[0011] 5. The dry-type transformer that prevents coil loosening cooperates with the heat conduction groove of the air outlet cover through the cooperation of the heat dissipation fan and the heat conduction groove of the air outlet cover, so that the heat dissipation fan cannot drive the air outside the air outlet cover to flow during the rotation of the heat dissipation fan, so that the heat dissipation fan can only drive the air inside the air outlet cover to flow toward the heat conduction groove position, so that the heat dissipation fan can more effectively drive the air inside the transformer to flow, thereby improving the heat extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the external structure of a dry-type transformer for preventing coil loosening of the present invention; Figure 2 This is a structural dissection diagram of a dry-type transformer for preventing coil loosening according to the present invention; Figure 3 It is a partial structural schematic diagram of a dry-type transformer for preventing coil loosening of the present invention; Figure 4 It is a schematic diagram of the structure of the transformer mechanism of the present invention; Figure 5 It is a partial structural schematic diagram of the voltage transformation mechanism of the present invention; Figure 6 This is a schematic diagram of the air inlet mechanism structure of the present invention; Figure 7 This is a structural anatomical diagram of the air inlet mechanism of the present invention; Figure 8 It is a schematic diagram of the heat dissipation mechanism structure of the present invention; Fig. 9It is a partial structural schematic diagram of the heat dissipation mechanism of the present invention; Fig.10 It is a partial structural dissection diagram of the heat dissipation mechanism of the present invention.

[0013] In the figure: 1, shell; 2, transformer mechanism; 3, air inlet mechanism; 4, heat dissipation mechanism; 201, chassis; 202, iron core; 203, winding; 204, joint; 205, chuck; 206, hexagonal block; 207, inner support plate; 208, bidirectional screw; 209, outer clamping plate; 210, supporting chassis; 211, screw sleeve; 31, fixed inner frame; 32, fixed outer frame; 33, air guide plate; 34, air guide block; 35, outer cover frame; 36, blade; 37, rotating column; 38, air inlet guide plate; 41, connecting frame; 42, air outlet cover; 43, motor; 44, air outlet plate; 45, transmission shaft; 46, cooling fan; 47, inner guide block. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0015] The first embodiment, as Figures 1 to 5 As shown, the present invention provides a technical solution: a dry-type transformer for preventing coil loosening, comprising: A housing 1 having a frame supporting the structural components, with air inlet slots formed on both sides of the housing 1 and a heat dissipation slot formed on the top of the outer side of the housing 1; A transformer 2, which is used to connect the circuit and perform transformer processing, and is installed inside the housing 1; An air inlet mechanism 3, which is used to guide the air entering the transformer when the air flows, and the air inlet mechanism 3 is symmetrically installed at the air inlet slot of the housing 1; The heat dissipation mechanism 4 is used to drive air flow to dissipate the heat inside the transformer, and the heat dissipation mechanism 4 is installed at the heat dissipation slot of the housing 1; The transformer mechanism 2 includes a base frame 201, which is fixedly mounted on the bottom of the inner wall of the housing 1, and an iron core 202 is fixedly mounted on the top of the base frame 201. The iron core 202 is evenly mounted along the axial direction of the base frame 201, and an inner support plate 207 is fixedly mounted on the outer side of the iron core 202. During the transformer process, the voltage in the circuit is transformed through the iron core 202 and the winding 203 in the transformer mechanism 2 through the electromagnetic induction law. At the same time, a large amount of heat is generated during the process of the winding 203 being energized. The heat dissipation mechanism 4 cooperates with the air inlet mechanism 3 to drive the air flow, and the generated heat is discharged. 02 is supported by an inner support plate 207 so that the winding 203 does not contact the iron core 202, and the inner support plate 207 is evenly installed on the outer side of the iron core 202 along the center of the iron core 202, the outer side of the inner support plate 207 is installed with the winding 203, the outer side of the iron core 202 is fixedly installed with a clamping plate 205, the clamping plate 205 is symmetrically arranged along the center position of the axis of the iron core 202, and a bidirectional screw 208 is rotatably installed between the clamping plates 205, the upper and lower ends of the bidirectional screw 208 both pass through the clamping plate 205, and the top of the bidirectional screw 208 is fixedly connected with a hexagonal block 206, and is clamped and fixed on the outer side of the winding 203 by an outer clamping plate 209. Before the working process, the worker rotates the hexagonal block 206 with a wrench, and the hexagonal block 206 drives the bidirectional screw 208 to rotate, so that the bidirectional screw 208 rotates under the restriction of the supporting chassis 210 and the clamping plate 205. During the rotation of the bidirectional screw 208, the screw sleeve 211 is driven to approach or move away through the threaded connection between the screw sleeve 211. The outer side of the bidirectional screw 208 is threadedly connected with the screw sleeve 211, and the screw sleeve 211 is symmetrically installed along the center position of the bidirectional screw 208, and an outer clamping plate 209 is slidably installed between the screw sleeves 211. The outer side of the outer clamping plate 209 is an inclined surface protruding toward the center position, and the top of the iron core 202 is fixedly installed. A connector 204 is provided, which is slidably connected to the outer side of the outer plate 209 through the screw sleeve 211 when approaching, so that the screw sleeve 211 is close to the center position of the outer side of the outer plate 209, and the outer plate 209 is clamped inwardly by the inclined surface of the outer plate 209, and cooperates with the inner support plate 207 to clamp the winding 203 in an interlaced manner to limit the loosening of the coil of the winding 203. The top end of the connector 204 passes through the shell 1 and extends to its top, and the bottom end of the bidirectional screw 208 is rotatably installed with a support chassis 210, and the bottom of the support chassis 210 is fixedly connected to the top of the base frame 201 through a connecting fastener, and there is a gap between the support chassis 210 and the base frame 201.

[0016] The second embodiment is based on the first embodiment. Figure 6 to Figure 7As shown, the air inlet mechanism 3 includes a fixed inner frame 31 and a fixed outer frame 32, the fixed inner frame 31 is fixedly installed at the air inlet slot of the shell 1 and is located inside the shell 1, the fixed outer frame 32 is fixedly installed at the air inlet slot of the shell 1 and is located outside the shell 1, and an air guide plate 33 is fixedly installed on the inner wall of the fixed inner frame 31, and the side of the air guide plate 33 close to the fixed outer frame 32 is an arc surface, and the arc surface of the air guide plate 33 gradually approaches the fixed outer frame 32 from top to bottom, and an air guide block 34 is fixedly installed at the bottom of the inner wall of the fixed inner frame 31, and the air The air flows from the inside of the outer cover frame 35 to the inside of the shell 1. During the flow, the heat dissipation mechanism 4 drives the air inside the shell 1 to be discharged outward. At this time, the air pressure inside the shell 1 is relatively low, and the outside air generates suction inside under the action of the air pressure difference. During the process of inhaling air, the direction of the suction is oriented by the air inlet guide plate 38, so that the air flows obliquely downward from the top to avoid the air below being driven. There is an air guide gap between the air guide block 34 and the air guide plate 33, and the farther the air guide gap is from the fixed outer frame 32, the smaller the gap.

[0017] The inner wall of the fixed outer frame 32 is rotatably mounted with a rotating column 37, the rotating column 37 is evenly mounted from top to bottom inside the fixed outer frame 32, and a blade 36 is fixedly mounted at the center position of the outer side of the rotating column 37, the blade 36 is positioned inside the fixed outer frame 32, the outer side of the fixed outer frame 32 is fixedly mounted with an outer cover frame 35, and the inner wall of the outer cover frame 35 is fixedly mounted with an air inlet guide plate 38. After the air enters, the arc-shaped groove of the air inlet guide plate 38 blocks the debris in the air, and the arc-shaped groove cooperates with the blade 36 to block the debris and dust. After the air passes through the blade 36, the air enters the interior of the fixed inner frame 31 through the air inlet slot of the shell 1. After entering the interior of the fixed inner frame 31, the air flows downward through the cooperation of the air guide plate 33 and the air guide block 34, and is introduced from the bottom of the transformer mechanism 2 through the air guide gap between the air guide plate 33 and the air guide block 34. The air inlet guide plate 38 is evenly installed from top to bottom inside the outer cover frame 35, and the end of the air inlet guide plate 38 away from the blade 36 is inclined upward, and the end of the air inlet guide plate 38 close to the blade 36 is curled upward in an arc to form a groove.

[0018] The third embodiment is based on the first and second embodiments. Figures 8 to 10As shown, the heat dissipation mechanism 4 includes a connecting frame 41, which is fixedly installed at the heat dissipation groove of the shell 1, and an air outlet cover 42 is fixedly installed at one end of the outer side of the connecting frame 41 away from the shell 1, and the outer side of the air outlet cover 42 is evenly provided with heat conduction grooves, and the heat conduction grooves are located at both ends of the outer side of the air outlet cover 42. The transmission shaft 45 is driven to rotate by the motor 43, and the heat dissipation fan 46 is driven to rotate by the transmission shaft 45, so that the heat dissipation fan 46 drives the air at the center position to flow to both ends through the spiral fan blades during the rotation process, and cooperates with the heat conduction groove of the air outlet cover 42 through the inner guide block 47, so that the internal hot air is discharged through the heat conduction groove and conducted to the outside to reduce the internal heat, and a motor 43 is fixedly installed on the outer side of the air outlet cover 42, and the output end of the motor 43 passes through the air outlet cover 42 and extends into the inside thereof, and the output end of the motor 43 is connected to the transmission shaft 45 through a coupling.

[0019] A cooling fan 46 is fixedly installed on the outside of the transmission shaft 45. The cooling fan 46 is symmetrically installed along the center position on the outside of the transmission shaft 45, and the blade width of the cooling fan 46 gradually decreases from the center position to both sides, and the blades are spiral plates. The cooling fan 46 is located between the heat conduction grooves of the air outlet cover 42. An air outlet plate 44 is fixedly installed on the inner wall of the connecting frame 41. The air outlet plate 44 is symmetrically installed along the center position of the axis of the connecting frame 41, and the end of the air outlet plate 44 away from the shell 1 is inclined toward the center position. During the air flow, the air inside is guided by the air outlet plate 44 to be conducted outward. Due to the reduction in the path width, the air flow speed is accelerated, thereby improving the air flow speed. Inner guide blocks 47 are fixedly installed between the air outlet plates 44, and the inner guide blocks 47 are symmetrically installed along the center position of the axis.

[0020] When in use, the circuit is connected to the transformer, and the voltage in the circuit is transformed through the transformer mechanism 2. During operation, the air flow inside the shell is driven by the heat dissipation mechanism 4, so that the air is introduced into the shell 1 through the air inlet mechanism 3, and the heat generated by the transformer mechanism 2 during operation is discharged through the heat dissipation mechanism 4.

[0021] During the voltage transformation process, the voltage in the circuit is transformed by the iron core 202 and the winding 203 in the voltage transformation mechanism 2 through the law of electromagnetic induction. At the same time, a large amount of heat is generated during the operation of the winding 203 when it is energized. The heat dissipation mechanism 4 cooperates with the air inlet mechanism 3 to drive the air flow and conduct the generated heat. The winding 203 and the iron core 202 are supported by the inner support plate 207 so that the winding 203 and the iron core 202 do not contact each other. At the same time, the outer side of the winding 203 is clamped and fixed by the outer clamping plate 209. Before the work process, the worker turns the hexagonal block 206 with a wrench. The bidirectional screw 208 is driven to rotate through the hexagonal block 206, so that the bidirectional screw 208 rotates under the restriction of the supporting chassis 210 and the clamping plate 205. During the rotation of the bidirectional screw 208, the screw sleeve 211 is driven to approach or move away through the threaded connection between the screw sleeve 211. When approaching, the screw sleeve 211 is connected to the outer side of the outer clamping plate 209 through the sliding connection, so that the screw sleeve 211 is close to the center position of the outer side of the outer clamping plate 209. Through the inclined surface of the outer clamping plate 209, the outer clamping plate 209 clamps the winding 203 inwardly, and cooperates with the inner support plate 207 to clamp and limit the loosening of the coil of the winding 203.

[0022] When air is introduced through the air intake mechanism 3, the air flows from the inside of the outer cover frame 35 to the inside of the shell 1. During the flow, the heat dissipation mechanism 4 drives the air inside the shell 1 to be discharged outward. At this time, the air pressure inside the shell 1 is relatively low. Under the action of the air pressure difference, suction is generated inside the outside air. During the process of inhaling air, the direction of the suction is oriented by the air intake guide plate 38, so that the air flows obliquely downward from the top to prevent the air below from being driven. At the same time, after the air enters, the arc-shaped groove of the air intake guide plate 38 is used to block the debris in the air, and the arc-shaped groove cooperates with the blade 36 to block the debris and dust. After the air passes through the blade 36, the air enters the interior of the fixed inner frame 31 through the air intake groove of the shell 1. After entering the interior of the fixed inner frame 31, the air flows downward through the cooperation of the air guide plate 33 and the air guide block 34, and is introduced from the bottom of the transformer mechanism 2 through the air guide gap between the air guide plate 33 and the air guide block 34.

[0023] In the heat dissipation mechanism 4, the transmission shaft 45 is driven to rotate by the motor 43, and the heat dissipation fan 46 is driven to rotate by the transmission shaft 45, so that the heat dissipation fan 46 drives the air at the center position to flow to both ends through the spiral fan blades during the rotation, and cooperates with the heat conduction groove of the air outlet cover 42 through the inner guide block 47, so that the internal hot air is discharged through the heat conduction groove and conducted to the outside to reduce the internal heat. At the same time, during the air flow process, the air outlet plate 44 guides the internal air to be conducted outward, and the air flow speed is accelerated due to the reduction of the path width, thereby improving the air flow speed.

[0024] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A dry-type transformer for preventing coil loosening, characterized in that: include: A shell (1), the shell (1) having a frame supporting a structural component, and air inlet slots are provided on both sides of the shell (1), and a heat dissipation slot is provided on the top of the outer side of the shell (1); A voltage transformation mechanism (2), the voltage transformation mechanism (2) being used to connect a circuit and perform voltage transformation, and the voltage transformation mechanism (2) being installed inside the housing (1); An air inlet mechanism (3), the air inlet mechanism (3) being used to guide air entering the transformer when the air flows, and the air inlet mechanism (3) being symmetrically mounted at the air inlet slot of the housing (1); A heat dissipation mechanism (4), the heat dissipation mechanism (4) is used to drive air flow to dissipate heat inside the transformer, and the heat dissipation mechanism (4) is installed at a heat dissipation slot of the housing (1); The transformer mechanism (2) comprises a base frame (201), the base frame (201) being fixedly mounted on the bottom of the inner wall of the housing (1), and an iron core (202) being fixedly mounted on the top of the base frame (201), the iron core (202) being evenly mounted along the axial direction of the base frame (201), and an inner support plate (207) being fixedly mounted on the outer side of the iron core (202), and the inner support plate (207) being evenly mounted on the outer side of the iron core (202) along the center of the circle of the iron core (202), a winding (203) being mounted on the outer side of the inner support plate (207), and a chuck (205) being fixedly mounted on the outer side of the iron core (202), and the chuck (205) are symmetrically arranged along the central position of the axis of the iron core (202), and a bidirectional screw (208) is rotatably installed between the chucks (205), the upper and lower ends of the bidirectional screw (208) both pass through the chuck (205), and the top of the bidirectional screw (208) is fixedly connected with a hexagonal block (206), the outer side of the bidirectional screw (208) is threadedly connected with a screw sleeve (211), the screw sleeve (211) is symmetrically installed along the central position of the bidirectional screw (208), and an outer clamping plate (209) is slidably installed between the screw sleeves (211), and the outer side of the outer clamping plate (209) is an inclined surface protruding toward the center position.

2. A dry-type transformer for preventing coil loosening according to claim 1, characterized in that: A joint (204) is fixedly mounted on the top of the iron core (202), the top of the joint (204) passes through the shell (1) and extends to the top thereof, and a support chassis (210) is rotatably mounted on the bottom end of the bidirectional screw (208), the bottom of the support chassis (210) is fixedly connected to the top of the base frame (201) via a connecting fastener, and a gap exists between the support chassis (210) and the base frame (201).

3. The dry-type transformer for preventing coil loosening according to claim 1, characterized in that: The air inlet mechanism (3) comprises a fixed inner frame (31) and a fixed outer frame (32); the fixed inner frame (31) is fixedly mounted at the air inlet slot of the shell (1) and is located inside the shell (1); the fixed outer frame (32) is fixedly mounted at the air inlet slot of the shell (1) and is located outside the shell (1); and an air guide plate (33) is fixedly mounted on the inner wall of the fixed inner frame (31).

4. A dry-type transformer for preventing coil loosening according to claim 3, characterized in that: A side of the air guide plate (33) close to the fixed outer frame (32) is an arc surface, and the arc surface of the air guide plate (33) gradually approaches the fixed outer frame (32) from top to bottom; an air guide block (34) is fixedly mounted on the bottom of the inner wall of the fixed inner frame (31); an air guide gap is present between the air guide block (34) and the air guide plate (33); and the farther the air guide gap is from the fixed outer frame (32), the smaller the gap becomes.

5. A dry-type transformer for preventing coil loosening according to claim 4, characterized in that: A rotating column (37) is rotatably mounted on the inner wall of the fixed outer frame (32); the rotating column (37) is evenly mounted from top to bottom inside the fixed outer frame (32); and a blade (36) is fixedly mounted at the center position outside the rotating column (37); the blade (36) is positioned inside the fixed outer frame (32).

6. A dry-type transformer for preventing coil loosening according to claim 5, characterized in that: An outer cover frame (35) is fixedly mounted on the outer side of the fixed outer frame (32), and an air inlet guide plate (38) is fixedly mounted on the inner wall of the outer cover frame (35). The air inlet guide plates (38) are evenly mounted from top to bottom inside the outer cover frame (35), and one end of the air inlet guide plate (38) away from the blade plate (36) is tilted upward, and one end of the air inlet guide plate (38) close to the blade plate (36) is curved upward to form a groove.

7. The dry-type transformer for preventing coil loosening according to claim 1, characterized in that: The heat dissipation mechanism (4) comprises a connection frame (41), the connection frame (41) being fixedly mounted at the heat dissipation slot of the housing (1), and an air outlet cover (42) being fixedly mounted at one end of the outer side of the connection frame (41) away from the housing (1), the outer side of the air outlet cover (42) being evenly provided with heat conduction slots, and the heat conduction slots being located at both ends of the outer side of the air outlet cover (42).

8. The dry-type transformer for preventing coil loosening according to claim 7, characterized in that: A motor (43) is fixedly mounted on the outside of the air outlet cover (42); an output end of the motor (43) passes through the air outlet cover (42) and extends into the interior thereof; and the output end of the motor (43) is connected to a transmission shaft (45) via a coupling.

9. A dry-type transformer for preventing coil loosening according to claim 8, characterized in that: A heat dissipation fan (46) is fixedly mounted on the outer side of the transmission shaft (45); the heat dissipation fan (46) is symmetrically mounted along the center position on the outer side of the transmission shaft (45); the width of the fan blades of the heat dissipation fan (46) gradually decreases from the center position to both sides; the fan blades are spiral plates; and the heat dissipation fan (46) is located between the heat conduction grooves of the air outlet cover (42).

10. The dry-type transformer for preventing coil loosening according to claim 7, characterized in that: An air outlet plate (44) is fixedly mounted on the inner wall of the connection frame (41); the air outlet plate (44) is symmetrically mounted along the central position of the axis of the connection frame (41); and one end of the air outlet plate (44) away from the shell (1) is inclined toward the central position; inner guide blocks (47) are fixedly mounted between the air outlet plates (44); and the inner guide blocks (47) are symmetrically mounted along the central position of the axis.

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