CN111430096A

CN111430096A - Sealed electronic transformer

Info

Publication number: CN111430096A
Application number: CN202010203416.9A
Authority: CN
Inventors: 王远志; 肖友朋; 储荣生; 范旭辉; 施子珍
Original assignee: Yuexi Swan Electronic Technology Co ltd; Anqing Normal University
Current assignee: Yuexi Swan Electronic Technology Co ltd; Anqing Normal University
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-07-17
Anticipated expiration: 2040-03-20
Also published as: CN111430096B

Abstract

The invention belongs to the technical field of transformers, and particularly relates to a sealed electronic transformer; comprises a voltage transformation component and a base; the voltage transformation assembly is arranged on the base; a cavity is arranged in the base, a through hole is formed in the position, close to the voltage transformation assembly, of the base, and the through hole is sealed through a wax layer; a fire extinguishing unit and a feeding unit are arranged in the cavity; the fire extinguishing unit comprises a hinged rod, a guide pipe, a fixing block and a bottom plate; the feeding unit comprises a V-shaped rod, a pressing plate and a rubber bag; the transformer can extinguish fire in time when on fire through the matching of the voltage transformation assembly, the base, the fire extinguishing unit and the feeding unit; the ammonium phosphate powder in the rubber bag is conveyed to the conduit through the hose and is sprayed out through the conduit, so that the variable pressure component is extinguished, the continuous combustion of fire is avoided, and the adverse effects of the burning of the variable pressure component on the working environment and other working elements are reduced.

Description

Sealed electronic transformer

Technical Field

The invention belongs to the technical field of transformers, and particularly relates to a sealed electronic transformer.

Background

An electronic transformer, which is an electronic device for converting alternating voltage of commercial power into direct current and then forming a high-frequency alternating voltage output by a semiconductor switching device, an electronic element and a high-frequency transformer winding, is also an alternating current-direct current-alternating current inverter circuit taught in the theory of electronics. In brief, it is mainly composed of a high-frequency transformer core (iron core) and two or more coils, which do not change their positions, and are converted into alternating voltage and current from one or more electric loops by means of electromagnetic induction through alternating current power. At the output end of the high-frequency transformer, high-frequency alternating current or direct current with different voltage grades is supplied to one or more than two circuit loops; the transformer is a novel transformer which realizes energy transfer and power conversion through power electronic technology. Analyzing and summarizing the existing power electronic transformer topology, the following definitions can be made for the power electronic transformer: a power electronic transformer is a stationary power device that combines a power electronic conversion technology with a high-frequency power conversion technology based on the electromagnetic induction principle to convert electric energy having one power characteristic into electric energy having another power characteristic. The electric characteristics of the electric energy mainly refer to the amplitude, frequency, phase number, phase sequence, waveform and the like of the voltage or the current.

When the electronic transformer is used outdoors, and no professional supervises, if the internal voltage of the electronic transformer is too high, the internal structure of the electronic transformer is burnt, even open fire appears on the surface of the electronic transformer, and more serious conditions such as fire and the like are caused.

Disclosure of Invention

In order to make up for the defects of the prior art, the problems that when the electronic transformer is used outdoors and no professional supervises the electronic transformer, if the internal voltage of the electronic transformer is too high, the internal structure of the electronic transformer is burnt, even open fire appears on the surface of the electronic transformer, and more serious conditions such as fire disasters are caused are solved; the invention provides a sealed electronic transformer.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a sealed electronic transformer, which comprises a transformation component and a base; the voltage transformation assembly is arranged on the base; a cavity is arranged in the base, a through hole is formed in the position, close to the voltage transformation assembly, of the base, and the through hole is sealed through a wax layer; a fire extinguishing unit and a feeding unit are arranged in the cavity; the fire extinguishing unit comprises a hinge rod, a guide pipe, a fixing block and a bottom plate; the hinged rod is hinged to the inner side wall of the cavity close to the through hole through a torsional spring, a bayonet is arranged at the end part of the hinged rod, a thin rope is connected to the hinged rod, and the end part of the thin rope is fixed in the wax layer; the fixed block is fixed on the side wall of the cavity close to the hinge rod, a sliding groove is arranged in the fixed block, and the sliding groove is sealed through a rubber film; the bottom plate is arranged on the inner side wall of the bottom end of the cavity through a spring; the guide pipe is connected in the sliding groove in a sliding manner, one end of the guide pipe is in contact with the rubber film, and the other end of the guide pipe is arranged on the bottom plate; the feeding unit comprises a V-shaped rod, a pressing plate and a rubber bag; the rubber bag is arranged on the inner side wall of the bottom end of the cavity, ammonium phosphate powder is filled in the rubber bag, and the rubber bag is connected with the conduit through a hose; the pressing plate is arranged at the top end of the rubber bag; the V-shaped rod is hinged on the inner side wall of the top end of the cavity, one end of the V-shaped rod is in contact with the surface of the bottom plate, and the other end of the V-shaped rod is in contact with the surface of the pressing plate; the transformer can extinguish fire in time when on fire through the matching of the voltage transformation assembly, the base, the fire extinguishing unit and the feeding unit; when the variable-voltage fire extinguishing device works, when the voltage inside the variable-voltage component is too high and a circuit is burnt, if the fire is too large, open fire can be generated outside the variable-voltage component, at the moment, the wax layer is melted under the action of the open fire, and the thin rope is not pulled any more after the wax layer is melted, so that the hinged rod rotates under the action of the torsion spring, in the rotating process of the hinged rod, the bayonet at the end part of the hinged rod can puncture the rubber film, at the moment, the rubber film does not seal the chute any more, the bottom plate pushes the conduit to slide out of the chute under the action of the elastic force of the spring and extends out of the through hole, the V-shaped rod can be extruded in the moving process of the bottom plate, the V-shaped rod rotates after being pressed, so that the V-shaped rod extrudes the rubber bag through the pressing plate in the rotating process, ammonium phosphate powder in the rubber bag is transported to the conduit through the hose and is sprayed out through the, the continuous combustion of the fire is avoided, and the adverse effects of the burning of the voltage transformation component on the working environment and other working elements are reduced.

Preferably, the bayonet is provided with a curvature adjacent to the side wall of the catheter to reduce the friction between the end of the catheter and the bayonet; when the device works, when the wax layer melts, the thin rope can fall off from the wax layer, so that the wax layer does not generate pulling force on the thin rope any more, the hinged rod rotates under the torsion action of the torsion spring, the bayonet at the end part of the hinged rod can puncture the rubber film in the rotating process of the hinged rod, at the moment, the rubber film does not seal the chute any more, the bottom plate pushes the guide pipe to slide out of the chute under the action of the spring elasticity and extends out of the through hole, the guide pipe can generate pushing force on the bayonet in the sliding process of the guide pipe to push the hinged rod to rotate, in order to reduce the friction force between the bayonet and the end part of the guide pipe and avoid the end part of the guide pipe from being clamped at the bayonet, the bayonet is provided with a radian close to the side wall of the guide pipe, so that the friction force between the bayonet and the end part of the guide pipe is effectively reduced, and the bayonet can be smoothly pushed to rotate the hinged rod in the sliding process, the hinge rod is prevented from being blocked in the sliding groove, so that the overall use effect of the transformer is effectively improved, and the transformer can be effectively extinguished when being burnt.

Preferably, a plurality of elastic sheets are uniformly arranged at the end part of the conduit; the end part of the elastic sheet is provided with a sealing gasket, so that when the guide pipe is positioned in the sliding groove, the sealing gasket can seal the end part of the guide pipe; the matching of the elastic sheet and the sealing gasket avoids the blockage caused by dripping the melted wax layer into the guide pipe; when the fire extinguishing device works, after a wax layer is melted, a thin rope is not pulled any more, so that the hinged rod rotates under the action of torsion of a torsion spring, in the rotating process of the hinged rod, the bayonet at the end part of the hinged rod can puncture the rubber film, at the moment, the rubber film does not seal the chute any more, the bottom plate pushes the guide pipe to slide out from the chute under the action of the elastic force of the spring, in order to prevent partial liquid wax oil from dripping into the guide pipe and causing the blockage of the guide pipe after the wax layer is melted, the end part of the guide pipe is provided with the elastic sheet and the sealing gasket, so that the wax oil only drips on the surface of the sealing gasket, and when the guide pipe slides out of the through hole, the elastic sheet bends around the guide pipe under the action of the self elastic force, the sealing gasket is driven to open towards two sides in the bending process of the elastic sheet, so that the guide pipe is completely opened, and at the moment, ammonium phosphate, thereby further guaranteed the factor of safety of electronic transformer in outdoor use, improved electronic transformer's whole practicality.

Preferably, the side wall, close to the rubber membrane, of the sealing gasket is parallel to the bottom plate, and the corners of the sealing gasket are provided with round chamfers, so that the pressure of the sealing gasket on the rubber membrane is effectively reduced, and the failure of the rubber membrane is avoided; the during operation, if electronic transformer is at normal during operation, the rubber membrane is in intact state, then the rubber membrane can produce pressure to the pipe, promote the bottom plate pressure spring behind the pipe pressurized, for avoiding when the rubber membrane produces pressure to the pipe, sealed pad produces destruction to the rubber membrane, it is parallel with the bottom plate to seal the lateral wall that fills up to be close to the rubber membrane, and sealed edge department that fills up all is equipped with circular chamfer, make the area of contact between sealed pad and the rubber membrane can reach the biggest, thereby make the sealed pressure of filling up to the rubber membrane reach the minimum, then effectively avoid sealed pad to prop open the rubber membrane under the effect of bottom plate and spring elasticity, thereby electronic transformer's stability in the use has been guaranteed, make when meetting electronic transformer surface and appearing the naked light, can effectually put out a fire to electronic transformer surface realization.

Preferably, the cavity is provided with an air bag at a position close to the hinge rod; the side wall of the top end of the bottom plate is provided with an air jet, the air jet is obliquely directed to the side wall of the voltage transformation assembly, a 45-degree included angle is formed between the air jet and the side wall of the voltage transformation assembly, and the air jet is communicated with the air bag; through the matching of the air bag and the air injection port, the ammonium phosphate powder can be completely attached to the surface of the variable pressure component for extinguishing fire; when the fire extinguishing device works, when the wax layer melts, the thin rope falls off from the wax layer, so that the wax layer does not generate pulling force on the thin rope any more, the hinged rod rotates under the torsion action of the torsion spring, the bayonet at the end of the hinged rod punctures the rubber film in the rotating process of the hinged rod, at the moment, the rubber film does not seal the chute any more, the bottom plate pushes the guide pipe to slide out of the chute under the action of the elastic force of the spring and extends out of the through hole, the guide pipe pushes the bayonet to rotate in the sliding process of the guide pipe, the air bag is extruded in the rotating process of the hinged rod, the internal gas of the air bag is sprayed to the surface of the electronic transformer through the air spraying port after being pressed, the ammonium phosphate powder sprayed out of the guide pipe can be fully contacted with the surface of the electronic transformer, the fire extinguishing of the surface of the electronic transformer is realized, and the working area and the working effect of the ammonium phosphate powder are effectively increased, the overall use effect of the electronic transformer is enhanced.

Preferably, the side wall of the V-shaped rod is rotatably connected with a rack; the fixed block is rotatably connected with a gear close to the hose, the gear is meshed with the rack, and supporting rods are uniformly distributed on the gear; the hose is knocked through the matching of the rack, the gear and the support rod, so that the situation that ammonium phosphate powder is blocked in the hose to influence the fire extinguishing effect is avoided; when in work, the thin rope is not pulled any more after the wax layer is melted, so that the hinge rod rotates under the action of the torsion spring, in the rotation process of the hinge rod, the bayonet at the end part of the hinge rod can puncture the rubber film, at the moment, the rubber film does not seal the chute any more, the bottom plate pushes the guide pipe to slide out of the chute under the action of the elastic force of the spring and extends out of the through hole, the V-shaped rod is extruded in the moving process of the bottom plate and rotates after being pressed, the rack is driven to deviate in the rotating process of the V-shaped rod, the gear is driven to rotate when the rack deviates, the gear drives the supporting rod to collide with the hose in the rotating process, thereby avoid ammonium phosphate powder to produce the jam in the hose for ammonium phosphate powder in the rubber bag can transmit to in the pipe and spout through the hose completely, has guaranteed ammonium phosphate powder's effect.

The invention has the following beneficial effects:

1. according to the sealed electronic transformer, the transformer can extinguish fire in time when on fire through the matching of the transformation assembly, the base, the fire extinguishing unit and the feeding unit, continuous combustion of fire is avoided, adverse effects of burning of the transformation assembly on the working environment and other working elements are reduced, and therefore the safety and reliability of the electronic transformer in the using process are improved.

2. According to the sealed electronic transformer, the hose is knocked through the matching of the rack, the gear and the support rod, so that ammonium phosphate powder is prevented from being blocked in the hose, the ammonium phosphate powder in the rubber bag can be completely transferred into the guide pipe through the hose and sprayed out, and the action effect of the ammonium phosphate powder is guaranteed.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a partial enlarged view of FIG. 2 at A;

FIG. 4 is a partial enlarged view of FIG. 2 at B;

in the figure: the pressure changing device comprises a pressure changing assembly 1, a base 2, a cavity 21, an air bag 211, an air jet 212, a through hole 22, a fire extinguishing unit 3, a hinge rod 31, a bayonet 311, a conduit 32, an elastic sheet 321, a sealing gasket 322, a fixing block 33, a sliding groove 331, a rubber film 332, a bottom plate 34, a feeding unit 4, a V-shaped rod 41, a rack 411, a gear 412, a support rod 413, a pressure plate 42, a rubber bag 43 and a hose 431.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, the sealed electronic transformer of the present invention includes a transformer assembly 1 and a base 2; the voltage transformation assembly 1 is arranged on the base 2; a cavity 21 is arranged in the base 2, a through hole 22 is formed in the position, close to the voltage transformation assembly 1, of the base 2, and the through hole 22 is sealed through a wax layer; a fire extinguishing unit 3 and a feeding unit 4 are arranged in the cavity 21; the fire extinguishing unit 3 comprises a hinged rod 31, a conduit 32, a fixed block 33 and a bottom plate 34; the hinged rod 31 is hinged on the inner side wall of the cavity 21 close to the through hole 22 through a torsion spring, a bayonet 311 is arranged at the end part of the hinged rod 31, a string is connected to the hinged rod 31, and the end part of the string is fixed in the wax layer; the fixed block 33 is fixed on the side wall of the cavity 21 close to the hinge rod 31, a sliding groove 331 is arranged in the fixed block 33, and the sliding groove 331 is sealed through a rubber film 332; the bottom plate 34 is arranged on the inner side wall at the bottom end of the cavity 21 through a spring; the guide tube 32 is slidably connected in the chute 331, and one end of the guide tube 32 is in contact with the rubber film 332, and the other end is mounted on the bottom plate 34; the feeding unit 4 comprises a V-shaped rod 41, a pressure plate 42 and a rubber bag 43; the rubber bag 43 is arranged on the inner side wall of the bottom end of the cavity 21, ammonium phosphate powder is filled in the rubber bag 43, and the rubber bag 43 is connected with the conduit 32 through a hose 431; the pressure plate 42 is arranged at the top end of the rubber bag 43; the V-shaped rod 41 is hinged on the inner side wall of the top end of the cavity 21, one end of the V-shaped rod 41 is in surface contact with the bottom plate 34, and the other end of the V-shaped rod 41 is in surface contact with the pressure plate 42; the transformer can extinguish fire in time when on fire through the matching of the transformer assembly 1, the base 2, the fire extinguishing unit 3 and the feeding unit 4; when the transformer assembly works, when the voltage inside the transformer assembly 1 is too high, and a circuit is burnt, if the fire is too large, an open fire is generated outside the transformer assembly 1, at the moment, the wax layer is melted under the action of the open fire, and when the wax layer is melted, the thin rope is not pulled any more, so that the hinge rod 31 rotates under the action of the torsion spring, in the rotating process of the hinge rod 31, the bayonet 311 at the end of the hinge rod 31 punctures the rubber film 332, at the moment, the rubber film 332 does not seal the chute 331 any more, the bottom plate 34 pushes the conduit 32 to slide out of the chute 331 under the action of the spring elasticity, and extends out of the through hole 22, the V-shaped rod 41 is squeezed in the moving process of the bottom plate 34, the V-shaped rod 41 rotates after being pressed, so that the V-shaped rod 41 squeezes the rubber bag 43 through the pressing plate 42 in the rotating process, and ammonium phosphate powder in the rubber bag 43 is transported to the conduit 32 through the hose 431, and the fire is sprayed out through the conduit 32, so that the fire extinguishing of the voltage transformation assembly 1 is realized, the continuous combustion of fire is avoided, and the adverse effects of the burning of the voltage transformation assembly 1 on the working environment and other working elements are reduced.

As an embodiment of the present invention, the bayonet 311 is provided with a curvature near the side wall of the catheter 32, thereby reducing the frictional force between the end of the catheter 32 and the bayonet 311; when the device works, when the wax layer is melted, the string can fall off from the wax layer, so that the wax layer does not generate pulling force on the string any more, and the hinged rod 31 rotates under the torsion action of the torsion spring, in the rotating process of the hinged rod 31, the bayonet 311 at the end part of the hinged rod 31 can puncture the rubber film 332, at the moment, the rubber film 332 does not seal the chute 331 any more, the bottom plate 34 pushes the conduit 32 to slide out of the chute 331 and extend out of the through hole 22 under the action of the spring elasticity, in the sliding process of the conduit 32, the conduit 32 can generate pushing force on the bayonet 311 to push the hinged rod 31 to rotate, in order to reduce the friction force between the bayonet 311 and the end part of the conduit 32 and avoid the end part of the conduit 32 from being clamped at the bayonet 311, the bayonet 311 is provided with a radian close to the side wall of the conduit 32, so that the friction force between the bayonet 311 and the end part of the conduit 32 is effectively reduced, and the conduit 32 can slide in, promotion bayonet 311 that can be smooth for hinged rod 31 takes place to rotate, avoids hinged rod 31 to cause the jam in spout 331, thereby has effectively improved the whole result of use of transformer, has guaranteed that the transformer can be effectively put out a fire when burning out.

As an embodiment of the present invention, a plurality of elastic pieces 321 are uniformly arranged at the end of the conduit 32; the end part of the elastic sheet 321 is provided with a sealing gasket 322, so that when the conduit 32 is positioned in the chute 331, the sealing gasket 322 can seal the end part of the conduit 32; the matching of the elastic sheet 321 and the sealing gasket 322 prevents the wax layer from being blocked after being melted and dropping into the guide pipe 32; when the device works, when the wax layer melts, no pulling force is generated on the string any more, so that the hinge rod 31 rotates under the action of the torsion spring, in the rotating process of the hinge rod 31, the bayonet 311 at the end of the hinge rod 31 punctures the rubber film 332, at this time, the rubber film 332 no longer seals the chute 331, the bottom plate 34 pushes the conduit 32 to slide out of the chute 331 under the action of the spring force, in order to prevent the blockage of the conduit 32 caused by the dropping of part of the liquid wax oil into the conduit 32 after the wax layer melts, the end of the conduit 32 is provided with the elastic sheet 321 and the sealing gasket 322, so that the wax oil only drops on the surface of the sealing gasket 322, and when the conduit 32 slides out of the through hole 22, the elastic sheet 321 bends around the conduit 32 under the action of the own spring force, the elastic sheet 322 is driven to open towards two sides in the bending process of the elastic sheet 321, so that the conduit 32 is completely opened, and at this time, the ammonium phosphate powder in the conduit, the fire extinguishing effect on the surface of the transformer is realized, so that the safety factor of the electronic transformer in the outdoor use process is further ensured, and the overall practicability of the electronic transformer is improved.

As an embodiment of the present invention, the side wall of the sealing gasket 322 close to the rubber membrane 332 is parallel to the bottom plate 34, and the corners of the sealing gasket 322 are provided with round chamfers, so as to effectively reduce the pressure of the sealing gasket 322 on the rubber membrane 332 and avoid the failure of the rubber membrane 332; when in work, if the electronic transformer works normally, the rubber film 332 is in a perfect state, the rubber membrane 332 will exert pressure on the conduit 32, and the pressure on the conduit 32 will push the base plate 34 to press the spring, so as to avoid that when the rubber membrane 332 exerts pressure on the conduit 32, the sealing gasket 322 breaks the rubber membrane 332, the side wall of the sealing gasket 322 close to the rubber membrane 332 is parallel to the bottom plate 34, and the corners of the sealing gasket 322 are all provided with round chamfers, so that the contact area between the sealing gasket 322 and the rubber membrane 332 can reach the maximum, so that the pressure of the sealing gasket 322 on the rubber membrane 332 is minimized, the sealing gasket 322 is effectively prevented from expanding the rubber membrane 332 under the action of the bottom plate 34 and the spring force, thereby guaranteed the stability of electronic transformer in the use for when meetting the electronic transformer surface and appearing naked light, can effectually put out a fire to electronic transformer surface realization.

As an embodiment of the present invention, the cavity 21 is provided with an air bag 211 near the hinge rod 31; the side wall of the top end of the bottom plate 34 is provided with an air outlet 212, the air outlet 212 obliquely points to the side wall of the voltage transformation assembly 1, an included angle of 45 degrees is formed between the air outlet 212 and the side wall of the voltage transformation assembly 1, and the air outlet 212 is communicated with the air bag 211; through the cooperation of the air bag 211 and the air injection port 212, the ammonium phosphate powder can be completely attached to the surface of the pressure swing assembly 1 for extinguishing fire; when the fire extinguishing device works, when a wax layer melts, the thin rope falls off from the wax layer, so that the wax layer does not generate pulling force on the thin rope any more, the hinged rod 31 rotates under the action of torsion of the torsion spring, in the rotating process of the hinged rod 31, the bayonet 311 at the end part of the hinged rod 31 punctures the rubber film 332, at the moment, the rubber film 332 does not seal the chute 331 any more, the bottom plate 34 pushes the guide pipe 32 to slide out of the chute 331 under the action of the elastic force of the spring and extend out of the through hole 22, in the sliding process of the guide pipe 32, the guide pipe 32 generates pushing force on the bayonet 311 to push the hinged rod 31 to rotate, the air bag 211 is extruded in the rotating process of the hinged rod 31, the internal gas of the air bag 211 is sprayed to the surface of the electronic transformer through the air nozzle 212 after the air bag 211 is pressed, so that the ammonium phosphate powder sprayed out through the guide pipe 32 can be fully contacted with the surface of the electronic transformer, effectively increases the working area and the working effect of the ammonium phosphate powder and enhances the overall use effect of the electronic transformer.

As an embodiment of the present invention, a rack 411 is rotatably connected to a side wall of the V-shaped rod 41; the fixed block 33 is rotatably connected with a gear 412 at a position close to the hose 431, the gear 412 is meshed with a rack 411, and supporting rods 413 are uniformly distributed on the gear 412; the hose 431 is knocked through the matching of the rack 411, the gear 412 and the support rod 413, so that the situation that the ammonium phosphate powder is blocked in the hose 431 to influence the fire extinguishing effect is avoided; when the device works, after the wax layer is melted, the thin rope is not pulled any more, so that the hinged rod 31 rotates under the action of the torsion spring, in the rotating process of the hinged rod 31, the bayonet 311 at the end of the hinged rod 31 punctures the rubber film 332, at the moment, the rubber film 332 does not seal the chute 331 any more, the bottom plate 34 pushes the conduit 32 to slide out of the chute 331 under the action of the spring elasticity and extend out of the through hole 22, the V-shaped rod 41 is extruded in the moving process of the bottom plate 34, the V-shaped rod 41 rotates after being compressed, the V-shaped rod 41 drives the rack 411 to deflect in the rotating process, the rack 411 drives the gear 412 to rotate when deflecting, the gear 412 drives the support rod 413 and the hose 431 to collide in the rotating process, so that ammonium phosphate powder is prevented from being blocked in the hose 431, and ammonium phosphate powder in the rubber bag 43 can be completely transferred into the conduit 32 through the hose 431 and sprayed out, the action effect of the ammonium phosphate powder is ensured.

When the transformer assembly works, when the voltage inside the transformer assembly 1 is too high, and a circuit is burnt, if the fire is too large, an open fire is generated outside the transformer assembly 1, at the moment, the wax layer is melted under the action of the open fire, and when the wax layer is melted, the thin rope is not pulled any more, so that the hinge rod 31 rotates under the action of the torsion spring, in the rotating process of the hinge rod 31, the bayonet 311 at the end of the hinge rod 31 punctures the rubber film 332, at the moment, the rubber film 332 does not seal the chute 331 any more, the bottom plate 34 pushes the conduit 32 to slide out of the chute 331 under the action of the spring elasticity, and extends out of the through hole 22, the V-shaped rod 41 is squeezed in the moving process of the bottom plate 34, the V-shaped rod 41 rotates after being pressed, so that the V-shaped rod 41 squeezes the rubber bag 43 through the pressing plate 42 in the rotating process, and ammonium phosphate powder in the rubber bag 43 is transported to the conduit 32 through the hose 431, the fire extinguishing agent is sprayed out through the guide pipe 32, so that the fire extinguishing of the voltage transformation assembly 1 is realized, the continuous combustion of fire is avoided, and the adverse effects of the burning of the voltage transformation assembly 1 on the working environment and other working elements are reduced; when the wax layer is melted, the string falls off from the wax layer, so that the wax layer does not generate pulling force on the string any more, and the hinge rod 31 rotates under the torsion action of the torsion spring, in the rotating process of the hinge rod 31, the bayonet 311 at the end of the hinge rod 31 punctures the rubber film 332, at this time, the rubber film 332 does not seal the chute 331 any more, the bottom plate 34 pushes the conduit 32 to slide out of the chute 331 under the action of the spring force and extend out of the through hole 22, in the sliding process of the conduit 32, the conduit 32 generates pushing force on the bayonet 311 to push the hinge rod 31 to rotate, in order to reduce the friction force between the bayonet 311 and the end of the conduit 32 and avoid the end of the conduit 32 being clamped at the bayonet 311, the bayonet 311 is provided with a radian close to the side wall of the conduit 32, so that the friction force between the bayonet 311 and the end of the conduit 32 is effectively reduced, and in the sliding process of the conduit 32 in the chute 331, the bayonet 311 can be smoothly pushed, so that the hinge rod 31 rotates, and the hinge rod 31 is prevented from being blocked in the chute 331, thereby effectively improving the overall use effect of the transformer and ensuring that the transformer can be effectively extinguished when being burnt; when the wax layer melts, no pulling force is generated on the string, so that the hinge rod 31 rotates under the action of the torsion spring, in the rotation process of the hinge rod 31, the bayonet 311 at the end of the hinge rod 31 punctures the rubber film 332, at this time, the rubber film 332 does not seal the chute 331 any more, the bottom plate 34 pushes the conduit 32 to slide out of the chute 331 under the action of the spring force, in order to prevent part of the liquid wax oil from dropping into the conduit 32 after the wax layer melts and causing the blockage of the conduit 32, the end of the conduit 32 is provided with the elastic sheet 321 and the sealing pad 322, so that the wax oil only drops on the surface of the sealing pad 322, and when the conduit 32 slides out of the through hole 22, the elastic sheet 321 bends around the conduit 32 under the action of the own spring force, the sealing pad 322 is driven to open towards two sides in the bending process of the elastic sheet 321, so that the conduit 32 is completely opened, and at this time, the ammonium phosphate powder in the conduit 32 can be, the fire extinguishing effect on the surface of the transformer is realized, so that the safety factor of the electronic transformer in the outdoor use process is further ensured, and the overall practicability of the electronic transformer is improved; if the rubber film 332 is in an intact state when the electronic transformer is in normal operation, the rubber film 332 will generate pressure on the conduit 32, the conduit 32 pushes the bottom plate 34 to press the spring after being pressed, in order to prevent the sealing pad 322 from damaging the rubber film 332 when the rubber film 332 generates pressure on the conduit 32, the side wall of the sealing pad 322 close to the rubber film 332 is parallel to the bottom plate 34, and the corners of the sealing gasket 322 are all provided with round chamfers, so that the contact area between the sealing gasket 322 and the rubber membrane 332 can reach the maximum, so that the pressure of the sealing gasket 322 on the rubber membrane 332 is minimized, the sealing gasket 322 is effectively prevented from expanding the rubber membrane 332 under the action of the bottom plate 34 and the spring force, therefore, the stability of the electronic transformer in the using process is ensured, and the surface of the electronic transformer can be effectively extinguished when open fire appears on the surface of the electronic transformer; when the wax layer is melted, the string drops from the wax layer, so that the wax layer does not generate pulling force on the string any more, thereby the hinge rod 31 rotates under the torsion action of the torsion spring, in the rotating process of the hinge rod 31, the bayonet 311 at the end of the hinge rod 31 punctures the rubber film 332, at this time, the rubber film 332 does not seal the chute 331 any more, the bottom plate 34 pushes the conduit 32 to slide out of the chute 331 under the action of the spring elasticity and extend out of the through hole 22, in the sliding process of the conduit 32, the conduit 32 generates pushing force on the bayonet 311 to push the hinge rod 31 to rotate, the air bag 211 is extruded in the rotating process of the hinge rod 31, the internal gas of the air bag 211 is sprayed out to the surface of the electronic transformer through the air nozzle 212 after the air bag 211 is pressurized, so that the ammonium phosphate powder sprayed out through the conduit 32 can fully contact with the surface of the electronic transformer, thereby realizing the fire extinguishing of the surface of the electronic transformer, the working area and the working effect of the ammonium phosphate powder are effectively increased, and the overall use effect of the electronic transformer is enhanced; when the wax layer melts, no pulling force is generated on the string, so that the hinge rod 31 rotates under the action of the torsion spring, the bayonet 311 at the end of the hinge rod 31 punctures the rubber film 332 in the rotating process of the hinge rod 31, at the moment, the rubber film 332 does not seal the chute 331 any more, the bottom plate 34 pushes the conduit 32 to slide out of the chute 331 under the action of the spring force and extend out of the through hole 22, the V-shaped rod 41 is extruded in the moving process of the bottom plate 34, the V-shaped rod 41 rotates after being compressed, the V-shaped rod 41 drives the rack 411 to deflect in the rotating process, the rack 411 drives the gear 412 to rotate when deflecting, the gear 412 drives the support rod 413 to collide with the hose 431 in the rotating process, so that the ammonium phosphate powder is prevented from being blocked in the hose 431, and the ammonium phosphate powder in the rubber bag 43 can be completely transferred into the conduit 32 through the hose 431 and ejected out, the action effect of the ammonium phosphate powder is ensured.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A sealed electronic transformer, characterized by: comprises a voltage transformation component (1) and a base (2); the transformation assembly (1) is arranged on the base (2); a cavity (21) is arranged in the base (2), a through hole (22) is formed in the position, close to the transformation assembly (1), of the base (2), and the through hole (22) is sealed through a wax layer; a fire extinguishing unit (3) and a feeding unit (4) are arranged in the cavity (21); the fire extinguishing unit (3) comprises a hinged rod (31), a guide pipe (32), a fixed block (33) and a bottom plate (34); the hinged rod (31) is hinged to the inner side wall of the cavity (21) close to the through hole (22) through a torsion spring, a bayonet (311) is arranged at the end part of the hinged rod (31), a thin rope is connected to the hinged rod (31), and the end part of the thin rope is fixed in the wax layer; the fixed block (33) is fixed on the side wall of the cavity (21) close to the hinge rod (31), a sliding groove (331) is formed in the fixed block (33), and the sliding groove (331) is sealed through a rubber film (332); the bottom plate (34) is arranged on the inner side wall of the bottom end of the cavity (21) through a spring; the guide pipe (32) is connected in the sliding groove (331) in a sliding manner, one end of the guide pipe (32) is in contact with the rubber film (332), and the other end of the guide pipe is arranged on the bottom plate (34); the feeding unit (4) comprises a V-shaped rod (41), a pressure plate (42) and a rubber bag (43); the rubber bag (43) is arranged on the inner side wall of the bottom end of the cavity (21), ammonium phosphate powder is filled in the rubber bag (43), and the rubber bag (43) is connected with the conduit (32) through a hose (431); the pressure plate (42) is arranged at the top end of the rubber bag (43); the V-shaped rod (41) is hinged on the inner side wall of the top end of the cavity (21), one end of the V-shaped rod (41) is in surface contact with the bottom plate (34), and the other end of the V-shaped rod (41) is in surface contact with the pressure plate (42); the transformer can extinguish fire in time when catching fire through the matching of the transformation assembly (1), the base (2), the fire extinguishing unit (3) and the feeding unit (4).

2. A sealed electronic transformer according to claim 1, characterised in that: the side wall of the bayonet (311) close to the conduit (32) is provided with a radian, so that the friction between the end of the conduit (32) and the bayonet (311) is reduced.

3. A sealed electronic transformer according to claim 2, characterised in that: a plurality of elastic sheets (321) are uniformly arranged at the end part of the conduit (32); the end part of the elastic sheet (321) is provided with a sealing gasket (322), so that when the guide pipe (32) is positioned in the sliding groove (331), the sealing gasket (322) can seal the end part of the guide pipe (32); the matching of the elastic sheet (321) and the sealing gasket (322) avoids the blockage caused by the dripping of the melted wax layer into the guide pipe (32).

4. A sealed electronic transformer according to claim 3, characterised in that: the lateral wall that sealed pad (322) are close to rubber membrane (332) is parallel with bottom plate (34), and the edge of sealed pad (322) all is equipped with circular chamfer to effectively reduce the pressure of sealed pad (322) to rubber membrane (332), avoid the inefficacy of rubber membrane (332).

5. A sealed electronic transformer according to claim 1, characterised in that: an air bag (211) is arranged in the cavity (21) close to the hinge rod (31); the side wall of the top end of the bottom plate (34) is provided with an air jet (212), the air jet (212) obliquely points to the side wall of the pressure transformation assembly (1), a 45-degree included angle is formed between the air jet (212) and the side wall of the pressure transformation assembly (1), and the air jet (212) is communicated with the air bag (211); the ammonium phosphate powder can be completely attached to the surface of the pressure swing assembly (1) through the cooperation of the air bag (211) and the air injection port (212) to extinguish fire.

6. A sealed electronic transformer according to claim 1, characterised in that: the side wall of the V-shaped rod (41) is rotatably connected with a rack (411); the fixed block (33) is rotatably connected with a gear (412) at a position close to the hose (431), the gear (412) is meshed with the rack (411), and supporting rods (413) are uniformly distributed on the gear (412); the hose (431) is knocked through the matching of the rack (411), the gear (412) and the support rod (413), so that the situation that the ammonium phosphate powder blocks in the hose (431) and influences the fire extinguishing effect is avoided.