A dry-type transformer with coil pressing function

Abstract

The present invention belongs to the technical field of transformers, and specifically, is a dry-type transformer with a coil clamping function. A dry-type transformer with a coil clamping function comprises a transformer module, a coil collecting device is arranged on the top of the transformer module, and circuit breakers are symmetrically arranged on both sides of the lower surface of the coil collecting device. The transformer module comprises a power supply base, and a transformer core is evenly arranged on the top of the inner cavity of the power supply base, and a coil module is sleeved on the outer surface of the transformer core. The device can prevent the problem of partial detachment of the wound coil module after long-term use by tightening the transformer coil outside the transformer core. After the transformer coil is tightened, the temperature and pressure inside the isolation shell will increase due to the increase in the number of turns of the transformer coil, and the transformer may catch fire or explode due to overheating, so it is necessary to reduce the pressure and cool down in time through the ventilation chassis at the bottom to avoid the above-mentioned accidents.

Description

Technical Field

[0001] The invention belongs to the technical field of transformers, in particular to a dry-type transformer with a coil pressing function. Background Art

[0002] Transformers play an important role in converting electric energy. Their safe and reliable operation is of great significance to maintaining the stability of the power system. Dry-type transformers are widely used in local lighting, high-rise buildings, airports, mechanical equipment and other places. Simply put, dry-type transformers refer to transformers whose cores and windings are not immersed in insulating oil. The coils on dry-type transformers are either set inside or set as a single spiral structure wound around the outside of the dry-type transformer. During the operation of the transformer, it is often affected by external sudden short circuits and other factors, generating short-circuit currents far exceeding the rated values ​​and huge short-circuit electric forces, causing the internal wires and insulation materials of the transformer to deform and be damaged under the dual effects of heat and stress, causing the transformer windings to loosen and increasing the risk of transformer failure and shutdown.

[0003] Existing dry-type transformers can prevent the problem of partial detachment of the wound windings during long-term use by tightening the external coils of the iron core. However, after the coils are tightened, the number of turns of the external coils of the iron core will increase, which will change the current passing through the windings, and the heat generated by the windings will also change accordingly. If the heat increases, it is necessary not only to enhance the heat dissipation effect of the transformer, but also to reduce the voltage inside the transformer. Otherwise, the transformer may catch fire or explode due to overheating, so improvements are needed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention solves the technical problems by adopting the following technical solutions: a dry-type transformer with a coil pressing function, comprising a transformer module, a coil collecting device is arranged on the top of the transformer module, and circuit breaker devices are symmetrically arranged on both sides of the lower surface of the coil collecting device;

[0005] The transformer module comprises a power supply base, a transformer core is evenly arranged on the top of the inner cavity of the power supply base, a coil module is sleeved on the outer surface of the transformer core, and an isolation cylinder shell is sleeved on the outside of the coil module;

[0006] The coil module includes a transformer coil, the top of the transformer coil is fixedly connected to a control pull rod, the top of the control pull rod is fixedly connected to a twist handle, the bottom of the transformer coil is fixedly connected to a limit bottom rod, the bottom of the limit bottom rod is fixedly connected to a propulsion sleeve, because the propulsion sleeve limits the limit bottom rod, the limit bottom rod cannot rotate synchronously with the transformer coil, but the propulsion sleeve can push the limit bottom rod upward, thereby compressing the transformer coil, and the bottom of the propulsion sleeve is fixedly connected to a ventilation chassis;

[0007] The circle collecting device includes a top shell, a transmission chain is arranged in the middle of the inner wall of the top shell, torsion top wheels are evenly arranged on the inner wall of the transmission chain, driving wheels are symmetrically arranged on both sides of the inner wall of the transmission chain, and a torque motor is fixedly connected to the inner wall of the driving wheel.

[0008] Furthermore, the number of the transformer cores is three, the bottom end of the transformer core is fixedly connected to the inner cavity of the power supply base, the outer surface of the transformer core is sleeved with the inner wall of the transformer coil, the outer surface of the isolation cylinder shell is fixedly connected to the bottom of the inner wall of the top strip shell, and the bottom end of the isolation cylinder shell is fixedly connected to the upper surface of the power supply base.

[0009] Furthermore, one end of the twist handle away from the control pull rod is fixedly connected to the lower surface of the twist top wheel, the top of the transformer core is fixedly connected to the inner cavity of the top bar shell through the through hole, and the top of the isolation cylinder shell is fixedly connected to the lower surface of the top bar shell.

[0010] Furthermore, air intake slots are symmetrically provided on both sides of the top of the inner cavity of the ventilation chassis, and the air intake slots extend to the outside of the ventilation chassis, exhaust ports are evenly provided on the sides of the inner cavity of the ventilation chassis, and the exhaust ports extend to the outside of the isolation cylinder shell, and a pressure-sensitive button is slidably connected to the top of the inner cavity of the propulsion sleeve. The ventilation chassis is a device that can exchange airflow between the internal gas of the isolation cylinder shell and the external gas, that is, the ventilation chassis inhales gas through the air intake slots on both sides, and discharges the gas through the exhaust port at the bottom, thereby reducing the pressure and temperature of the internal space of each isolation cylinder shell.

[0011] Furthermore, the circuit breaker device includes an extended side shell, a front alarm is arranged at the axis center of the top of the inner wall of the extended side shell, an isolation slide is slidably connected to the middle of the inner wall of the extended side shell, a force-bearing push rod is fixedly connected to the side of the lower surface of the isolation slide away from the transformer module, and a return spring is sleeved on the top of the outer surface of the force-bearing push rod.

[0012] Furthermore, an insulating end is slidably connected to the bottom of the outer surface of the force-bearing push rod, and a conductive end is symmetrically arranged at the bottom of the inner cavity of the force-bearing push rod through a through slide groove, and external wires are symmetrically arranged on the upper and lower sides of the inner wall of the insulating end through a through slide groove, and an insulating jacket is sleeved on the side of the outer surface of the external wire away from the insulating end. When the insulating end is inserted into the socket on the side of the power supply base, the conductive end directly supplies power to the power supply base from the protruding part of the insulating end, and then the power supply is transformed through the transformer module. The conductive end is always arranged inside the force-bearing push rod. When the force-bearing push rod slides vertically relative to the insulating end, the conductive end will shrink to the inside of the force-bearing push rod due to the extrusion effect, and the conductive end and the external wire are staggered, resulting in a distance between the external wire and the power supply base, and the force-bearing push rod is an insulator and cannot conduct electricity. Therefore, although the insulating end is still inserted into the side of the power supply base at this time, the power supply base is already in a power-off state.

[0013] Furthermore, a side of the outer surface of the insulating terminal away from the insulating jacket is plugged into a side of the inner cavity of the power supply base, the outer surface of the conductive terminal is slidably connected to the inner cavity of the insulating terminal through a through-slide groove, and an end of the conductive terminal away from the external wire is plugged into the inner cavity of the power supply base, and the top of the extended side shell is fixedly connected to one side of the lower surface of the top strip shell.

[0014] Furthermore, the front alarm includes a guide rod shell, a pressure-sensitive push rod is slidably connected to the middle of the inner wall of the guide rod shell, a compression sleeve is fixedly connected to the bottom end of the force-bearing push rod, a buzzer is arranged in the middle of the inner wall of the compression sleeve, and pressing ends are symmetrically arranged at both ends of the inner cavity of the buzzer. When the pressing ends at both ends of the buzzer are pressed, a buzzer alarm sound will be emitted. Fig. 9 As shown, the buzzer is working at this time.

[0015] Furthermore, the end of the pressing end away from the buzzer is fixedly connected to the axis of the inner wall of the compression soft sleeve, the top end of the guide rod shell is fixedly connected to the bottom end of the torque motor output shaft, the bottom end of the compression soft sleeve is fixedly connected to the upper surface of the isolation slide plate, and the outer surface of the pressure-sensitive push rod extends to the interior of the top strip shell through the through opening.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The device can prevent the problem of partial shedding of the wound coil module after long-term use by fastening the transformer coil outside the transformer core. After the transformer coil is fastened, the temperature and pressure inside the isolation shell will increase due to the increase in the number of turns of the transformer coil. The transformer may catch fire or explode due to overheating. Therefore, it is necessary to reduce the pressure and temperature in time through the ventilation chassis at the bottom to avoid the above accidents.

[0018] 2. The device separates each transformer core by an isolating cylinder shell, so that even if a transformer core has problems such as leakage and fire during use, it will not interfere with the remaining transformer cores, thereby reducing damage. During the tightening process of the transformer coil, the limiting bottom rod at the bottom will push the spiral transformer coil to slide along the outer surface of the transformer core, so the loose transformer coils can be further stacked together, thereby ensuring the tightness of the transformer coil, thereby significantly improving the number of turns and tightness of the coil.

[0019] 3. When the device is at the peak power supply period, the current passing through the transformer module is relatively large. If the coil module is tightened at this time, it may be difficult to effectively cool down the transformer module by relying solely on the ventilation chassis. Therefore, the probability of the transformer module burning or even catching fire is extremely high. The temperature is related to the pressure inside the device, so the high voltage inside the device will trigger the circuit breaker and directly disconnect the power supply to the power supply base. The cooling work is performed separately to ensure that the device will not be broken down and cause fire, which has a significant insurance effect.

[0020] 4. The ventilation chassis will transport the high-temperature and high-pressure gas inside the isolation cylinder shell to the external environment. In order to avoid the problem of high-temperature and high-pressure gas causing injury to people, the buzzer inside the front alarm will be triggered before the circuit breaker is started, and the people around the device will be evacuated in advance, so that the ventilation chassis can work normally, avoiding the above-mentioned problems and improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the present invention;

[0022] Figure 2 is a cross-sectional view of the present invention;

[0023] Figure 3 is a cross-sectional view of the transformer module of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the coil module of the present invention;

[0025] Figure 5 is a cross-sectional view of the loop collecting device of the present invention;

[0026] Figure 6 is a cross-sectional view of the circuit breaker device of the present invention;

[0027] Figure 7 is a cross-sectional view of the circuit breaker device A of the present invention;

[0028] Figure 8 is a cross-sectional view of a front alarm of the present invention;

[0029] Fig. 9 It is a cross-sectional view of the front alarm after the buzzer of the present invention is pressed.

[0030] In the figure: 1. Transformer module; 2. Coil collection device; 3. Circuit breaker; 11. Power supply base; 12. Transformer core; 13. Isolation cylinder shell; 14. Coil module; 141. Transformer coil; 142. Control pull rod; 143. Twist handle; 144. Limit bottom rod; 145. Push sleeve; 146. Ventilation chassis; 21. Top bar shell; 22. Transmission chain belt; 23. Twist top wheel; 24. Active rotating wheel; 25. Torque motor; 31. Extended side shell; 32. Isolation slide plate; 33. Return spring; 34. Force push rod; 35. Conductive terminal; 36. Insulating terminal; 37. External wire; 38. Insulating jacket; 4. Front alarm; 41. Guide rod shell; 42. Pressure push rod; 43. Compression soft sleeve; 44. Buzzer; 45. Press terminal. DETAILED DESCRIPTION

[0031] 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.

[0032] Example 1, please refer to Figure 1-Figure 5 The present invention provides a technical solution: a dry-type transformer with a coil pressing function, comprising a transformer module 1, a coil collecting device 2 is arranged on the top of the transformer module 1, and circuit breaker devices 3 are symmetrically arranged on both sides of the lower surface of the coil collecting device 2;

[0033] The transformer module 1 includes a power supply base 11, a transformer core 12 is evenly arranged on the top of the inner cavity of the power supply base 11, a coil module 14 is sleeved on the outer surface of the transformer core 12, and an isolation cylinder shell 13 is sleeved on the outer surface of the coil module 14;

[0034] The coil module 14 includes a transformer coil 141, the top of the transformer coil 141 is fixedly connected to a control rod 142, the top of the control rod 142 is fixedly connected to a twist handle 143, the bottom of the transformer coil 141 is fixedly connected to a limit bottom rod 144, the bottom of the limit bottom rod 144 is fixedly connected to a propulsion sleeve 145, because the propulsion sleeve 145 limits the limit bottom rod 144, the limit bottom rod 144 cannot rotate synchronously with the transformer coil 141, but the propulsion sleeve 145 can push the limit bottom rod 144 upward, thereby compressing the transformer coil 141, and the bottom of the propulsion sleeve 145 is fixedly connected to a ventilation chassis 146;

[0035] The loop collecting device 2 includes a top shell 21, a transmission chain belt 22 is arranged in the middle of the inner wall of the top shell 21, a torsion top wheel 23 is evenly arranged on the inner wall of the transmission chain belt 22, and driving wheels 24 are symmetrically arranged on both sides of the inner wall of the transmission chain belt 22, and a torque motor 25 is fixedly connected to the inner wall of the driving wheel 24.

[0036] There are three transformer cores 12, the bottom end of the transformer core 12 is fixedly connected to the inner cavity of the power supply base 11, the outer surface of the transformer core 12 is sleeved with the inner wall of the transformer coil 141, the outer surface of the isolation cylinder shell 13 is fixedly connected to the bottom of the inner wall of the top strip shell 21, and the bottom end of the isolation cylinder shell 13 is fixedly connected to the upper surface of the power supply base 11.

[0037] One end of the twist handle 143 away from the control pull rod 142 is fixedly connected to the lower surface of the twist top wheel 23, the top of the transformer core 12 is fixedly connected to the inner cavity of the top bar shell 21 through the through opening, and the top of the isolation cylinder shell 13 is fixedly connected to the lower surface of the top bar shell 21.

[0038] Air intake slots are symmetrically provided on both sides of the top of the inner cavity of the ventilation chassis 146, and the air intake slots extend to the outside of the ventilation chassis 146; exhaust ports are evenly provided on the sides of the inner cavity of the ventilation chassis 146, and the exhaust ports extend to the outside of the isolation cylinder shell 13; a pressure-sensitive button is slidably connected to the top of the inner cavity of the push sleeve 145; the ventilation chassis 146 is a device that can exchange airflow between the internal gas of the isolation cylinder shell 13 and the external gas, that is, the ventilation chassis 146 inhales gas through the air intake slots on both sides, and discharges the gas through the exhaust port at the bottom, thereby reducing the pressure and temperature of the internal space of each isolation cylinder shell 13.

[0039] When the device is used for operation, external high voltage electricity is transmitted to the power supply base 11 at the bottom through the wire on the left side, and then the current is transformed through the transformer module 1 and transmitted out through the wire on the right side.

[0040] The device can control the coil module 14 on the outer surface of the transformer core 12 to shrink through the coil-collecting device 2 to achieve the purpose of tightening the coil. The specific operation is as follows: the torque motors 25 on both sides control the corresponding active wheels 24 to rotate, and drive the torsion top wheel 23 to rotate through the transmission chain belt 22. At this time, the bottom of the torsion top wheel 23 will drive the control rod 142 through the torsion handle 143. Since each torsion top wheel 23 is the same as the axis of the corresponding transformer core 12, the control rod 142 can rotate around the outer surface of the transformer core 12. At this time, the control rod 142 pulls the top end of the transformer coil 141 to rotate, and the bottom end of the transformer coil 141 is fixed by the limiting bottom rod 144 and cannot rotate, so the transformer coil 141 will be further wound on the outer surface of the transformer core 12 due to the pulling force.

[0041] During the process of tightening the transformer coil 141, the limiting bottom rod 144 at the bottom will be pushed upward under the control of the pushing sleeve 145. At this time, the top end of the limiting bottom rod 144 will push the transformer coil 141 spirally wound around the transformer core 12 upward, so that the loose coils are further stacked together, thereby ensuring the tightness of the coils and increasing the number of turns of the coils. Although the problem of the transformer coil 141 being prone to partial detachment is solved at this time, the heat generated by the transformer coil 141 will increase inside the isolation cylinder shell 13, and the internal pressure will also increase. Then the ventilation chassis 146 at the bottom will reduce the pressure and discharge the heat with air as the medium, thereby reducing the pressure and cooling the temperature.

[0042] Example 2, please refer to Figure 1-Figure 9 The present invention provides a technical solution: on the basis of the first embodiment, the circuit breaker device 3 includes an extended side shell 31, a front alarm 4 is arranged at the axis center of the top of the inner wall of the extended side shell 31, an isolation slide plate 32 is slidably connected to the middle of the inner wall of the extended side shell 31, a force push rod 34 is fixedly connected to the side of the lower surface of the isolation slide plate 32 away from the transformer module 1, and a return spring 33 is sleeved on the top of the outer surface of the force push rod 34.

[0043] The bottom of the outer surface of the force-bearing push rod 34 is slidably connected with an insulating terminal 36, and the bottom of the inner cavity of the force-bearing push rod 34 is symmetrically provided with a conductive terminal 35 through a through-slot, and the upper and lower sides of the inner wall of the insulating terminal 36 are symmetrically provided with an external wire 37 through a through-slot, and the outer surface of the external wire 37 is sleeved with an insulating jacket 38 on the side away from the insulating terminal 36. When the insulating terminal 36 is inserted into the socket on the side of the power supply base 11, the conductive terminal 35 directly supplies power to the power supply base 11 from the protruding part of the insulating terminal 36, and then enters the transformer module 1 For transformer-powered operation, the conductive terminal 35 is always arranged inside the force-bearing push rod 34. When the force-bearing push rod 34 vertically slides relative to the insulating terminal 36, the conductive terminal 35 will shrink to the inside of the force-bearing push rod 34 due to the extrusion effect, and the conductive terminal 35 is staggered with the external wire 37, resulting in a distance between the external wire 37 and the power supply base 11. The force-bearing push rod 34 is an insulator and cannot conduct electricity. Therefore, although the insulating terminal 36 is still inserted into the side of the power supply base 11 at this time, the power supply base 11 is already in a power-off state.

[0044] The side of the outer surface of the insulating terminal 36 away from the insulating jacket 38 is plugged into the side of the inner cavity of the power supply base 11, the outer surface of the conductive terminal 35 is slidably connected to the inner cavity of the insulating terminal 36 through a through-slide groove, and the end of the conductive terminal 35 away from the external wire 37 is plugged into the inner cavity of the power supply base 11, and the top of the extended side shell 31 is fixedly connected to one side of the lower surface of the top strip shell 21.

[0045] The front alarm 4 includes a guide rod shell 41, a pressure-sensitive push rod 42 is slidably connected to the middle of the inner wall of the guide rod shell 41, a compression soft sleeve 43 is fixedly connected to the bottom end of the force-bearing push rod 34, a buzzer 44 is arranged in the middle of the inner wall of the compression soft sleeve 43, and pressing ends 45 are symmetrically arranged at both ends of the inner cavity of the buzzer 44. When the pressing ends 45 at both ends of the buzzer 44 are pressed, a buzzer alarm sound will be emitted, such as Fig. 9 As shown, the buzzer 44 is working at this time.

[0046] The end of the pressing terminal 45 away from the buzzer 44 is fixedly connected to the axis of the inner wall of the compression soft sleeve 43, the top of the guide rod shell 41 is fixedly connected to the bottom end of the output shaft of the torque motor 25, the bottom end of the compression soft sleeve 43 is fixedly connected to the upper surface of the isolation slide plate 32, and the outer surface of the pressure-sensitive push rod 42 extends to the inside of the top bar shell 21 through the through opening.

[0047] When the heat generated by the transformer coil 141 gradually increases, the internal pressure of the isolation cylinder shell 13 also gradually increases, and the pressure of the top strip shell 21 connected to the isolation cylinder shell 13 will also increase, thereby causing the top ends of the front alarms 4 on both sides to be pushed downward. At this time, the force push rod 34 is pushed downward by the pressure, and then the passage between the extended side shell 31 and the top strip shell 21 is opened, the isolation slide plate 32 is pushed downward, and then the force push rod 34 is pushed down. At this time, the force push rod 34 drives the conductive terminal 35 to move. The conductive terminal 35 is not only staggered with the external wire 37, but also slides out of the inner cavity of the power supply base 11, causing the power supply base 11 to lose power.

[0048] When the pressure-sensitive push rod 42 is pushed toward the inside of the extended side shell 31 due to the pressure, not only will the opening between the extended side shell 31 and the top strip shell 21 be opened, but the pressure-sensitive push rod 42 will also push the compression soft cover 43 downward. At this time, the isolation slide plate 32 has not been directly acted upon by the air pressure to slide downward, so the upper and lower ends of the compression soft cover 43 will be squeezed. Fig. 9 As shown, at this time, the pressing ends 45 at the upper and lower ends of the internal buzzer 44 will be pressed, thereby triggering the buzzer 44 to remind people around to stay away from the device, otherwise the high-temperature and high-pressure gas discharged by the device may cause injury.

[0049] 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 with a coil pressing function, comprising a transformer module (1), a coil collecting device (2) being arranged on the top of the transformer module (1), and circuit breaker devices (3) being symmetrically arranged on both sides of the lower surface of the coil collecting device (2), Features: The transformer module (1) comprises a power supply base (11), a transformer core (12) is evenly arranged on the top of the inner cavity of the power supply base (11), a coil module (14) is sleeved on the outer surface of the transformer core (12), and an isolation cylinder shell (13) is sleeved on the outside of the coil module (14); The coil module (14) comprises a transformer coil (141), the top end of the transformer coil (141) is fixedly connected to a control pull rod (142), the top end of the control pull rod (142) is fixedly connected to a twist handle (143), the bottom end of the transformer coil (141) is fixedly connected to a limit bottom rod (144), the bottom end of the limit bottom rod (144) is fixedly connected to a propulsion sleeve (145), and the bottom end of the propulsion sleeve (145) is fixedly connected to a ventilation chassis (146); The loop collecting device (2) comprises a top shell (21), a transmission chain (22) is arranged in the middle of the inner wall of the top shell (21), a torsion top wheel (23) is evenly arranged on the inner wall of the transmission chain (22), driving wheels (24) are symmetrically arranged on both sides of the inner wall of the transmission chain (22), and a torque motor (25) is fixedly connected to the inner wall of the driving wheel (24).

2. A dry-type transformer with coil pressing function according to claim 1, Features: The number of the transformer cores (12) is three, the bottom end of the transformer core (12) is fixedly connected to the inner cavity of the power supply base (11), the outer surface of the transformer core (12) is sleeved with the inner wall of the transformer coil (141), the outer surface of the isolation cylinder shell (13) is fixedly connected to the bottom of the inner wall of the top strip shell (21), and the bottom end of the isolation cylinder shell (13) is fixedly connected to the upper surface of the power supply base (11).

3. A dry-type transformer with coil pressing function according to claim 2, Features: One end of the twist handle (143) away from the control pull rod (142) is fixedly connected to the lower surface of the twist top wheel (23), the top end of the transformer core (12) is fixedly connected to the inner cavity of the top bar shell (21) through a through opening, and the top of the isolation cylinder shell (13) is fixedly connected to the lower surface of the top bar shell (21).

4. A dry-type transformer with coil pressing function according to claim 3, Features: Air intake slots are symmetrically provided on both sides of the top of the inner cavity of the ventilation chassis (146), and the air intake slots extend to the outside of the ventilation chassis (146); exhaust ports are evenly provided on the sides of the inner cavity of the ventilation chassis (146), and the exhaust ports extend to the outside of the isolation cylinder shell (13); and a pressure-sensitive button is slidably connected to the top of the inner cavity of the propulsion sleeve (145).

5. A dry-type transformer with coil pressing function according to claim 1, Features: The circuit breaker device (3) comprises an extended side shell (31), a front alarm (4) is arranged at the axis center of the top of the inner wall of the extended side shell (31), an isolation slide plate (32) is slidably connected to the middle of the inner wall of the extended side shell (31), a force-bearing push rod (34) is fixedly connected to the side of the lower surface of the isolation slide plate (32) away from the transformer module (1), and a return spring (33) is sleeved on the top of the outer surface of the force-bearing push rod (34).

6. A dry-type transformer with coil pressing function according to claim 5, Features: The bottom of the outer surface of the force-bearing push rod (34) is slidably connected to an insulating terminal (36), the bottom of the inner cavity of the force-bearing push rod (34) is symmetrically provided with a conductive terminal (35) through a through-slide groove, and the upper and lower sides of the inner wall of the insulating terminal (36) are symmetrically provided with an external wire (37) through a through-slide groove, and the outer surface of the external wire (37) is sleeved with an insulating jacket (38) on the side away from the insulating terminal (36).

7. A dry-type transformer with coil pressing function according to claim 6, Features: The side of the outer surface of the insulating terminal (36) away from the insulating jacket (38) is plugged into the side of the inner cavity of the power supply base (11), the outer surface of the conductive terminal (35) is slidably connected to the inner cavity of the insulating terminal (36) through a through-slide groove, and the end of the conductive terminal (35) away from the external wire (37) is plugged into the inner cavity of the power supply base (11), and the top of the extended side shell (31) is fixedly connected to one side of the lower surface of the top strip shell (21).

8. A dry-type transformer with coil pressing function according to claim 7, Features: The front alarm (4) comprises a guide rod shell (41), a pressure-sensitive push rod (42) is slidably connected to the middle of the inner wall of the guide rod shell (41), a compression soft sleeve (43) is fixedly connected to the bottom end of the force-bearing push rod (34), a buzzer (44) is arranged in the middle of the inner wall of the compression soft sleeve (43), and pressing ends (45) are symmetrically arranged at both ends of the inner cavity of the buzzer (44).

9. A dry-type transformer with coil pressing function according to claim 8, Features: The end of the pressing end (45) away from the buzzer (44) is fixedly connected to the axis of the inner wall of the compression soft sleeve (43), the top end of the guide rod shell (41) is fixedly connected to the bottom end of the output shaft of the torque motor (25), the bottom end of the compression soft sleeve (43) is fixedly connected to the upper surface of the isolation slide plate (32), and the outer surface of the pressure-sensitive push rod (42) extends to the inside of the top strip shell (21) through the through opening.

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