CN114628115A

CN114628115A - Power transformer winding

Info

Publication number: CN114628115A
Application number: CN202210301797.3A
Authority: CN
Inventors: 王首权; 吴彬; 孙信
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-06-14

Abstract

The invention relates to the technical field of transformers, in particular to a power transformer winding, which comprises a shell, wherein a device cavity is formed in the shell, a magnetic core is fixedly connected in the device cavity, coils are sleeved on two sides of the magnetic core, a top plate is fixedly arranged at the upper end of the shell, a first electrode and a second electrode are symmetrically and fixedly connected to the upper surface of the top plate, a heat conduction layer is embedded in the shell, a fixed block is fixedly arranged in the top plate, and one end of the fixed block penetrates through the upper surface of the top plate and extends to the outside of the top plate. The device is cooled by the circulation flow of the evaporated liquid in the annular pipe, and the circuit protection device is disconnected by the thermal deformation of the bimetallic strip when the device is overloaded, so that liquid carbon dioxide can be quickly vaporized to extinguish fire and absorb heat to cool the device when the device catches fire.

Description

Power transformer winding

Technical Field

The invention relates to the technical field of transformers, in particular to a power transformer winding.

Background

The transformer is used for loads requiring 2 different voltage levels, and the three-winding transformer is most commonly used in power systems. Compared with two common transformers, the three-winding transformer is economical, occupies less land and is more convenient to maintain and manage. The three-phase three-winding transformer usually adopts Y-Y-delta connection, i.e. the primary winding and the secondary winding are both Y-connected, and the third winding is connected into delta. The delta connection method is a closed loop and allows the same-phase third harmonic current to pass, so that the Y connection primary winding and the Y connection secondary winding do not generate third harmonic voltage. Thus, it can provide a neutral point for both the primary and secondary sides. In a long-distance power transmission system, the third winding can also be connected with a synchronous phase modulator to improve the power factor of the line.

A transformer winding in the prior patent (publication number: CN1122185650A) includes an upper pressing plate, a lower pressing plate, and an iron core, wherein the iron core is disposed between the upper pressing plate and the lower pressing plate; the coil is arranged on the surface of the iron core; the dead lever is fixed in the bottom of top board, the bottom fixedly connected with fixed disk of dead lever. The transformer winding provided by the invention is provided with the fixed cylinder which is covered outside the coil, the rotary cylinder which can be rotatably adjusted is arranged outside the fixed cylinder, the opening mode of the air holes is adjusted through the filter holes and the through holes on the rotary cylinder when the rotary cylinder rotates, so that the ventilation, the filtration and the protection of the air entering the surface of the coil are convenient, the rotating position of the rotary cylinder can be adaptively adjusted according to the use in different environments, the heat dissipation and protection requirements of the coil in the use in different environments are met, and the use stability and the use safety of the coil are improved.

According to the invention, the winding is cooled through the filter holes, but the working state of the oil-immersed transformer cannot be cooled through the vent holes, and the device is not subjected to power-off protection during overload of the winding.

To this end, a power transformer winding is proposed.

Disclosure of Invention

The invention aims to provide a power transformer winding, which dissipates heat of a device through the circulation flow of an evaporated liquid in a ring-shaped pipe, and breaks a circuit protection device through the thermal deformation of a bimetallic strip when the device is overloaded, and liquid carbon dioxide can be rapidly vaporized to extinguish fire and absorb heat to cool the device when the device catches fire, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a power transformer winding, includes the casing, the device chamber has been seted up to the inside of casing, fixedly connected with magnetic core in the device chamber, the both sides cover of magnetic core is equipped with the coil, the upper end fixed mounting of casing has the roof, the first electrode of upper surface symmetry fixedly connected with and the second electrode of roof, the casing inlays and is equipped with the heat-conducting layer, the inside fixed mounting of roof has the fixed block, the one end of fixed block runs through the upper surface of roof and extends to the outside of roof, the surface of casing is equipped with the heat dissipation mechanism that is used for the winding cooling, the inside of roof is equipped with the outage mechanism that is used for preventing device overload, the upper surface of casing is equipped with the fire extinguishing mechanism who is used for putting out a fire.

The evaporated liquid circularly flows in the annular pipe to dissipate heat of the device, and the bimetal strip is heated to deform to break the circuit protector in case of overload, so that liquid carbon dioxide can be vaporized fast to extinguish fire and absorb heat to cool the device in case of fire.

Preferably, the heat dissipation mechanism comprises fixing plates symmetrically and fixedly installed on the side face of the shell, annular tubes are fixedly installed in the fixing plates at equal intervals, two one-way valves are symmetrically arranged in each annular tube, and evaporation liquid is pre-installed in each annular tube.

When the two first electrodes and the two second electrodes are connected with a circuit, the winding can generate voltage, the purpose of boosting and reducing the voltage is achieved through the difference of the number of the two coils, after the coil is electrified, the coil can generate heat, the heat of the coil can be transferred into the insulating oil, because the heat conducting layer is embedded in the shell, the heat conducting layer can radiate the heat in the device cavity to the inside of the fixing plate, the temperature difference between the inner part and the outer part of the fixing plate is larger, one side of the annular tube, which is positioned in the fixing plate, is heated, evaporated liquid in the tube evaporates and absorbs heat to become gas, then the gas enters one side of the annular tube, which is positioned in the outer part of the fixing plate, through the check valve at the upper end, then the gas is liquefied by heat radiation under the low temperature of the external environment, and the liquid flows downwards after being changed into the liquid, then flows back to one side of the annular pipe close to the shell through the check valve at the lower end of the fixing plate to be heated again, a cycle is completed, and then the heat dissipation and the temperature reduction of the device are continuously carried out.

Preferably, the heat conducting layer is made of carbon graphite.

The carbon graphite has the excellent characteristics of low friction coefficient, good corrosion resistance, good thermal conductivity, low linear expansion coefficient, good pairing performance and temperature resistance and the like.

Preferably, the outage mechanism includes the conducting block of symmetry fixed mounting diapire in the roof, the interior roof symmetry fixed mounting of roof has flexible metal pole, two the one end of flexible metal pole run through the roof and with second electrode fixed connection, two the outer fringe of flexible metal pole is all overlapped and is equipped with the spring, two the equal fixedly connected with metal guide of the other end of flexible metal pole, two the one end of spring respectively with two metal guide fixed connection, two the metal guide respectively with the interior roof elastic connection of roof, the interior roof symmetry fixed mounting of roof has heat conduction pottery, every heat conduction pottery's one end all runs through the interior roof and the casing of roof and extends to in the device chamber, heat conduction pottery's other end fixedly connected with bimetallic strip.

When the power consumption is increased, the current amount in the coil is increased, the device is damaged when the current amount is increased to a certain degree, the device is overloaded, the temperature of the upper layer of the insulating oil reaches 85 ℃ or even exceeds 85 ℃, when the temperature reaches 85 ℃, the temperature is transmitted to the bimetallic strip through the heat conduction ceramic, the material of the active layer of the bimetallic strip mainly comprises manganese-nickel-copper alloy, nickel-chromium-iron alloy, nickel-manganese-iron alloy, nickel and the like, the material of the passive layer mainly comprises nickel-iron alloy, the content of nickel is 30-45%, the expansion coefficient of the active layer of the bimetallic strip is higher, the expansion coefficient of the passive layer is lower, the bimetallic strip is driven to deform due to the non-uniform expansion coefficient between the two layers, the deformation of the bimetallic strip can drive the metal guide head to move upwards, the telescopic metal rod can contract, the spring is compressed, and is disconnected with the conductive block, so that the circuit disconnection device stops working, when the temperature of the cavity of the device is reduced, the bimetallic strip can be recovered, and the metal guide head can also move downwards under the action of the self elasticity of the spring and is connected with the conductive block again.

Preferably, the fire extinguishing mechanism comprises a deep groove arranged inside a fixed block, a deep groove ball bearing is fixedly arranged at one end of the fixed block, a rotating rod is rotatably arranged inside the deep groove ball bearing, one end of the rotating rod is fixedly connected with a plurality of fan blades, baffles are symmetrically and fixedly arranged on the inner wall of the middle part of the deep groove, memory alloy wires are fixedly connected to one sides inside the two baffles, a stop block is slidably connected to the outer edge of one end of each of the two baffles, the two memory alloy wires are fixedly connected with one end of the stop block, one end of the deep groove is filled with vaporized liquid, a heat conduction layer is symmetrically embedded in the inner wall of the fixed block, a rotating plate is fixedly connected to the other end of the rotating rod, cavities are equidistantly formed in the rotating plate, liquid carbon dioxide is filled in each cavity, a pressure valve is fixedly connected to one side of each cavity, and honeycomb tubes are fixedly arranged on the lower surface of the rotating plate at equal intervals, the honeycomb is in communication with a pressure valve.

The insulating oil can generate a large amount of combustible hydrocarbon mixed gas at high temperature, when the device is damaged or the device leaks electricity, the combustible hydrocarbon mixed gas can be ignited, when a certain part of the shell has a fire phenomenon, the combustion temperature can be rapidly transmitted to the lower end of the fixed block due to the high thermal conductivity of the heat conduction layer, the combustion temperature of the gas reaches the temperature of the fixed block, the vaporized liquid at the bottom of the deep groove can be rapidly vaporized when the heat is transmitted to the lower end of the fixed block, but the vaporized liquid gas is compressed at the bottom of the deep groove due to the obstruction of the stop blocks and the baffle plates, when the combustion temperature reaches the temperature, the memory alloy wire can be rapidly contracted towards the two sides of the deep groove and pulls the two stop blocks to move, a gap can be generated between the two stop blocks, the vaporized liquid gas below can be rapidly discharged from the gap and generate strong impact force on the fan blades, and then the fan blades can rapidly rotate under the impact of the vaporized liquid gas, the flabellum passes through the bull stick and drives the commentaries on classics board and rotate together, when changeing the board and rotating, a plurality of pressure valves in the board will be opened changeing, and liquid carbon dioxide in the cavity will be thrown away from the honeycomb pipe through the pressure valve, and liquid carbon dioxide can vaporize rapidly and absorb heat at normal atmospheric temperature, separates device and air, reaches the purpose of putting out a fire and cooling down fast to the device.

Preferably, a support plate is fixedly mounted at the lower end of the housing.

The support plate can stabilize the device.

Compared with the prior art, the invention has the beneficial effects that:

1. the heat in the device can be carried out by the circulating flow of the evaporating liquid in the annular pipe, and then the device is continuously cooled.

2. When the device is overloaded, heat passes through the heat conducting ceramic, so that the bimetallic strip is heated and deformed to disconnect the circuit protection device.

3. When the device is on fire, the liquid carbon dioxide can be quickly vaporized to extinguish fire and absorb heat to cool the device.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view of the internal structure of the present invention;

FIG. 3 is an enlarged view of the structure at B in accordance with the present invention;

FIG. 4 is a schematic structural view of the annular tube of the present invention;

FIG. 5 is an enlarged view of the structure at A of the present invention;

FIG. 6 is an enlarged view of the structure at C of the present invention;

fig. 7 is a top view of the present invention.

In the figure: 1 shell, 2 coils, 3 magnetic cores, 4 device cavities, 5 heat conducting layers, 6 fixing plates, 7 insulating oil, 8 first electrodes, 9 second electrodes, 10 top plates, 11 rotating plates, 12 springs, 13 telescopic metal rods, 14 metal guide heads, 15 pressure valves, 16 honeycomb tubes, 17 bimetallic strips, 18 heat conducting ceramics, 19 conductive blocks, 20 annular tubes, 21 supporting plates, 22 one-way valves, 23 fixing blocks, 24 deep grooves, 25 rotating rods, 26 vaporized liquid, 27 stopping blocks, 28 baffle plates, 29 memory alloy wires, 30 deep groove ball bearings, 31 fan blades and 32 cavities.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, the present invention provides a power transformer winding, which has the following technical scheme:

the utility model provides a power transformer winding, which comprises a housin 1, device chamber 4 has been seted up to casing 1's inside, fixedly connected with magnetic core 3 in the device chamber 4, the both sides cover of magnetic core 3 is equipped with coil 2, casing 1's upper end fixed mounting has roof 10, the first electrode of the last surface symmetry fixedly connected with 8 and second electrode 9 of roof 10, casing 1 inlays and is equipped with heat-conducting layer 5, the inside fixed mounting of roof 10 has fixed block 23, the one end of fixed block 23 runs through the upper surface of roof 10 and extends to the outside of roof 10, casing 1's surface is equipped with the heat dissipation mechanism that is used for the winding cooling, the inside of roof 10 is equipped with the outage mechanism that is used for preventing device overload, casing 1's upper surface is equipped with the fire extinguishing mechanism that is used for putting out a fire.

The circulation of the evaporated liquid in the annular tube 20 dissipates heat from the device, and the bimetallic strip 17 is deformed by heat to break the circuit protection device when the device is overloaded, and the liquid carbon dioxide is rapidly vaporized to extinguish fire and absorb heat to cool the device when the device is on fire.

Referring to fig. 2, 4 and 7, the heat dissipation mechanism includes fixing plates 6 symmetrically and fixedly mounted on the side surface of the housing 1, the fixing plates 6 are made of copper, annular tubes 20 are fixedly mounted inside the fixing plates 6 at equal intervals, two check valves 22 are symmetrically arranged inside each annular tube 20, and evaporation liquid is pre-filled inside each annular tube 20.

When the two first electrodes 8 and the two second electrodes 9 are connected, the winding generates voltage, the purpose of boosting and reducing the voltage is achieved through the quantity difference of the two coils 2, after the coils 2 are electrified, the coils 2 generate heat, the heat of the coils 2 is transferred to the insulating oil 7, as the shell 1 is embedded with the heat conduction layer 5, the fixing plate 6 is made of copper with good heat conductivity, the heat conduction layer 5 can radiate the heat in the device cavity 4 to the inside of the fixing plate 6, the temperature difference between the inside and the outside of the fixing plate 6 is large, one side of the annular tube 20 in the fixing plate 6 is heated, evaporated liquid in the tube evaporates and absorbs heat to become gas, then enters one side of the annular tube 20 in the outside of the fixing plate 6 through the check valve 22 at the upper end, is subjected to low temperature of the external environment and is liquefied through heat radiation, flows downwards after becoming liquid, and then flows back to one side of the annular tube 20 close to the shell 1 through the check valve 22 at the lower end of the fixing plate 6 to be heated again, and completing a cycle, and further continuously cooling the device.

As an embodiment of the present invention, referring to fig. 2, 3, and 5, the heat conductive layer 5 is made of carbon graphite.

As an embodiment of the present invention, referring to fig. 2 and 3, the power cutoff mechanism includes conductive blocks 19 symmetrically and fixedly mounted on the inner bottom wall of the top plate 10, telescopic metal rods 13 are symmetrically and fixedly mounted on the inner top wall of the top plate 10, one end of each of the two telescopic metal rods 13 penetrates through the top plate 10 and is fixedly connected with the second electrode 9, springs 12 are sleeved on the outer edges of the two telescopic metal rods 13, the other end of each of the two telescopic metal rods 13 is fixedly connected with a metal guide 14, one end of each of the two springs 12 is fixedly connected with the two metal guides 14, the two metal guides 14 are elastically connected with the inner top wall of the top plate 10, heat conductive ceramics 18 are symmetrically and fixedly mounted on the inner bottom wall of the top plate 10, one end of each of the heat conductive ceramics 18 penetrates through the inner bottom wall of the top plate 10 and the housing 1 and extends into the device cavity 4, and a bimetallic strip 17 is fixedly connected to the other end of each of the heat conductive ceramics 18.

When the power consumption is increased, the current amount in the coil 2 is increased, the device is damaged when the current amount is increased to a certain degree, the device is overloaded, the temperature of the upper layer of the insulating oil 7 reaches 85 ℃ or even exceeds 85 ℃, when the temperature reaches 85 ℃, the temperature is transmitted to the bimetallic strip 17 through the heat conducting ceramic 18, the material of the active layer of the bimetallic strip 17 mainly comprises manganese-nickel-copper alloy, nickel-chromium-iron alloy, nickel-manganese-iron alloy, nickel and the like, the material of the passive layer mainly comprises nickel-iron alloy, the content of nickel is 30-45%, the expansion coefficient of the active layer of the bimetallic strip 17 is higher, the expansion coefficient of the passive layer is lower, the bimetallic strip 17 is driven to deform due to the non-uniform expansion coefficient between the two layers, the deformation of the bimetallic strip 17 drives the metal guide head 14 to move upwards, the telescopic metal rod 13 contracts, the spring 12 is compressed, and is disconnected with the conductive block 19, the circuit breaking device stops working, when the temperature of the device cavity 4 is reduced, the bimetallic strip 17 is recovered, the metal guide head 14 is also moved downwards under the self-elastic force of the spring 12 to be connected with the conductive block 19 again.

Referring to fig. 2, 5 and 6, as an embodiment of the present invention, the fire extinguishing mechanism includes a deep groove 24 disposed inside a fixed block 23, one end of the fixed block 23 is fixedly installed with a deep groove ball bearing 30, a rotating rod 25 is rotatably installed inside the deep groove ball bearing 30, one end of the rotating rod 25 is fixedly connected with a plurality of fan blades 31, the inner wall of the middle portion of the deep groove 24 is symmetrically and fixedly installed with baffles 28, one sides of the insides of the two baffles 28 are fixedly connected with memory alloy wires 29, the outer edges of one ends of the two baffles 28 are slidably connected with a stopper 27, the two memory alloy wires 29 are fixedly connected with one end of the stopper 27, one end of the deep groove 24 is filled with a vaporized liquid 26, the vaporized liquid 26 is water, the inner wall of the fixed block 23 is symmetrically embedded with a heat conduction layer 5, the other end of the rotating rod 25 is fixedly connected with a rotating plate 11, cavities 32 are disposed at equal intervals inside the rotating plate 11, each cavity 32 is filled with liquid carbon dioxide, one side of each cavity 32 is fixedly connected with a pressure valve 15, honeycomb pipes 16 are fixedly arranged on the lower surface of the rotating plate 11 at equal intervals, and the honeycomb pipes 16 are communicated with the pressure valves 15.

The insulating oil 7 can generate a large amount of combustible hydrocarbon mixed gas at high temperature, when the device is damaged or the device leaks electricity, the combustible hydrocarbon mixed gas can be ignited, when a fire phenomenon occurs at a certain part of the shell 1, the combustion temperature can be rapidly transferred to the lower end of the fixed block 23 due to the high thermal conductivity of the heat conduction layer 5, when the gas combustion temperature reaches 100 ℃, the vaporized liquid 26 at the bottom of the deep groove 24 can be rapidly vaporized, but due to the obstruction of the stop 27 and the baffle 28, the vaporized liquid 26 gas is compressed at the bottom of the deep groove 24, the memory alloy wire 29 is processed into a shrinkage state at 300 ℃ in advance, the memory alloy wire 29 can recover the shrinkage state after being cooled and stretched and changed in shape, so that when the combustion temperature reaches 300 ℃, the memory alloy wire 29 can be rapidly shrunk towards the two sides of the deep groove 24, and pulls the two blocks 27 to move, a gap is formed between the two blocks 27, the lower vaporized liquid 26 gas can be rapidly discharged from the gap, and strong impact force is generated on the fan blade 31, then the fan blade 31 can rapidly rotate under the impact of the vaporized liquid 26 gas, the fan blade 31 drives the rotating plate 11 to rotate together through the rotating rod 25, when the rotating plate 11 rotates, the pressure valve 15 can be acted by centrifugal force, the valve core in the pressure valve 15 deviates under the action of the centrifugal force, so that the pipeline in the pressure valve 15 is opened, when the plurality of pressure valves 15 in the rotating plate 11 are opened, the liquid carbon dioxide in the cavity 32 can be thrown out from the honeycomb tube 16 through the pressure valve 15, and the liquid carbon dioxide can rapidly vaporize and absorb heat at normal temperature, so that the device is separated from air, and the purposes of extinguishing fire and rapidly cooling the device are achieved.

Referring to fig. 2, a support plate 21 for supporting the device is fixedly mounted to a lower end of the housing 1 as an embodiment of the present invention.

The support plate 21 can stabilize the device.

The working principle is as follows: when the two first electrodes 8 and the two second electrodes 9 are connected, the winding generates voltage, the purpose of boosting and reducing the voltage is achieved through the quantity difference of the two coils 2, after the coils 2 are electrified, the coils 2 generate heat, the heat of the coils 2 is transferred to the insulating oil 7, as the heat conduction layer 5 is embedded in the shell 1, the heat conduction layer 5 can radiate the heat in the device cavity 4 to the inside of the fixing plate 6, the temperature difference between the inside and the outside of the fixing plate 6 is large, one side of the annular tube 20 in the fixing plate 6 is heated, evaporated liquid in the tube evaporates and absorbs heat to become gas, then the evaporated liquid enters one side of the annular tube 20 in the outside of the fixing plate 6 through the check valve 22 at the upper end, then the evaporated liquid is liquefied through low temperature of the external environment, flows downwards after being liquefied, and then flows back to one side of the annular tube 20 close to the shell 1 through the check valve 22 at the lower end of the fixing plate 6 to be heated again, completing a cycle, and further continuously cooling the device, wherein the carbon graphite has the excellent characteristics of low friction coefficient, good corrosion resistance, good heat conductivity, low linear expansion coefficient, good assembling performance and temperature resistance and the like, when the power consumption is increased, the current amount in the coil 2 is increased, the current amount is increased to a certain degree, the device is damaged, the device is overloaded, the temperature of the upper layer of the insulating oil 7 reaches 85 ℃ or even exceeds 85 ℃, when the temperature reaches 85 ℃, the temperature is transmitted to the bimetallic strip 17 through the heat conducting ceramic 18, the material of the active layer of the bimetallic strip 17 mainly comprises manganese-nickel-copper alloy, nickel-chromium-iron alloy, nickel-manganese-iron alloy, nickel and the like, the material of the passive layer is mainly nickel-iron alloy, the content of nickel is 30-45%, the expansion coefficient of the active layer of the bimetallic strip 17 is higher, the expansion coefficient of the passive layer is lower, and the expansion coefficient between the two layers is not uniform, so as to drive the bimetallic strip 17 to deform, the deformation of the bimetallic strip 17 drives the metal guide head 14 to move upwards, the telescopic metal rod 13 contracts, the spring 12 is compressed, and is disconnected with the conductive block 19, so that the circuit breaking device stops working, when the temperature of the device cavity 4 is reduced, the bimetallic strip 17 recovers, the metal guide head 14 also moves downwards under the self elastic force of the spring 12 and is connected with the conductive block 19 again, the insulating oil 7 can generate a large amount of combustible hydrocarbon mixed gas at high temperature, when the device is damaged or leaks electricity, the combustible hydrocarbon mixed gas can be ignited, when a certain part of the shell 1 catches fire, due to the high thermal conductivity of the heat conduction layer 5, the burning temperature can be rapidly transmitted to the lower end of the fixed block 23, the burning temperature of the gas is up to 200 ℃, and when the heat is transmitted to the lower end of the fixed block 23, the vaporized liquid 26 at the bottom of the deep groove 24 can be rapidly vaporized, but, due to the obstruction of the stopper 27 and the baffle 28, the vaporized vaporization liquid 26 gas is compressed at the bottom of the deep groove 24, when the burning temperature reaches 300 ℃, the memory alloy wire 29 will shrink rapidly to the two sides of the deep groove 24, and pulls the two stoppers 27 to move, a gap is formed between the two stoppers 27, the gas of the lower vaporized liquid 26 is rapidly discharged from the gap, and strong impact force is generated on the fan blades 31, then the fan blade 31 will rotate rapidly under the impact of the gas in the vaporized liquid 26, the fan blade 31 will drive the rotating plate 11 to rotate together through the rotating rod 25, when the rotating plate 11 rotates, the pressure valves 15 in the rotating plate 11 are opened, and the liquid carbon dioxide in the cavity 32 is thrown out of the honeycomb tube 16 through the pressure valves 15, the liquid carbon dioxide can be quickly vaporized and absorb heat at normal temperature, so that the device is separated from air, and the purposes of extinguishing fire and quickly cooling the device are achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A power transformer winding comprising a housing (1), characterized in that: a device cavity (4) is arranged inside the shell (1), a magnetic core (3) is fixedly connected in the device cavity (4), the two sides of the magnetic core (3) are sleeved with coils (2), the upper end of the shell (1) is fixedly provided with a top plate (10), the upper surface of the top plate (10) is symmetrically and fixedly connected with a first electrode (8) and a second electrode (9), a heat conduction layer (5) is embedded in the shell (1), a fixed block (23) is fixedly arranged in the top plate (10), one end of the fixing block (23) penetrates through the upper surface of the top plate (10) and extends to the outside of the top plate (10), the surface of casing (1) is equipped with the heat dissipation mechanism that is used for cooling to the winding, the inside of roof (10) is equipped with the outage mechanism that is used for preventing the device overload, the upper surface of casing (1) is equipped with the mechanism of putting out a fire that is used for putting out a fire.

2. A power transformer winding according to claim 1, characterized in that: the heat dissipation mechanism comprises fixing plates (6) which are symmetrically and fixedly installed on the side face of the shell (1), a plurality of annular tubes (20) are fixedly installed in the fixing plates (6) at equal intervals, two check valves (22) are symmetrically arranged in the annular tubes (20), and evaporation liquid is pre-filled in the annular tubes (20).

3. A power transformer winding according to claim 1, characterized in that: the heat conducting layer (5) is made of carbon graphite.

4. A power transformer winding according to claim 1, characterised in that: the power-off mechanism comprises conductive blocks (19) symmetrically and fixedly installed on the inner bottom wall of a top plate (10), telescopic metal rods (13) are symmetrically and fixedly installed on the inner top wall of the top plate (10), one ends of the two telescopic metal rods (13) penetrate through the top plate (10) and are fixedly connected with a second electrode (9), springs (12) are sleeved on the outer edges of the two telescopic metal rods (13), metal guide heads (14) are fixedly connected to the other ends of the two telescopic metal rods (13), one ends of the two springs (12) are fixedly connected with the two metal guide heads (14) respectively, the two metal guide heads (14) are elastically connected with the inner top wall of the top plate (10) respectively, heat-conducting ceramics (18) are symmetrically and fixedly installed on the inner bottom wall of the top plate (10), and one end of each heat-conducting ceramic (18) penetrates through the inner bottom wall of the top plate (10) and a shell (1) and extends into a device cavity (4), the other end of the heat conducting ceramic (18) is fixedly connected with a bimetallic strip (17).

5. A power transformer winding according to claim 1, characterized in that: the fire extinguishing mechanism comprises a deep groove (24) arranged inside a fixed block (23), one end of the fixed block (23) is fixedly provided with a deep groove ball bearing (30), a rotating rod (25) is installed inside the deep groove ball bearing (30) in a rotating mode, one end of the rotating rod (25) is fixedly connected with a plurality of fan blades (31), a baffle (28) is fixedly installed on the inner wall of the middle of the deep groove (24) in a symmetrical mode, two memory alloy wires (29) are fixedly connected to one side inside of the baffle (28), a stop block (27) is slidably connected to the outer edge of one end of the baffle (28), two memory alloy wires (29) are fixedly connected with one end of the stop block (27), vaporized liquid (26) is contained in one end of the deep groove (24), a heat conduction layer (5) is embedded in the inner wall of the fixed block (23) in a symmetrical mode, and a rotating plate (11) is fixedly connected with the other end of the rotating rod (25), cavities (32) are formed in the rotating plate (11) at equal intervals, liquid carbon dioxide is contained in each cavity (32), a pressure valve (15) is fixedly connected to one side of each cavity (32), honeycomb pipes (16) are fixedly mounted on the lower surface of the rotating plate (11) at equal intervals, and the honeycomb pipes (16) are communicated with the pressure valves (15).

6. A power transformer winding according to claim 1, characterized in that: the lower end of the shell (1) is fixedly provided with a supporting plate (21).