CN113380521A

CN113380521A - 110 kV-level resin-cast insulating transformer with three-phase integrated structure

Info

Publication number: CN113380521A
Application number: CN202110645878.0A
Authority: CN
Inventors: 王晓峰; 乔红军; 梅德进; 陈勇军
Original assignee: Jiangsu Ruien Electric Co ltd
Current assignee: Jiangsu Ruien Electrical Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-09-10
Anticipated expiration: 2041-06-09
Also published as: CN113380521B

Abstract

The invention discloses a 110kV resin casting insulating transformer with a three-phase integrated structure, which comprises a transformer box body and a sun-shading box, wherein a box door is installed on the front side of the transformer box body through a hinge, a heat dissipation cabinet is installed on the back side of the transformer box body, the sun-shading box is installed on the top of the transformer box body, two groups of driving boxes which are symmetrically arranged are installed on the inner bottom wall of the transformer box body, a metal rod is installed on the top of each driving box, a coiling box is installed on the top of each metal rod, two groups of explosion-proof oil tanks which are arranged in parallel are installed on the inner bottom wall of the transformer box body, and the explosion-proof oil tanks are located between the two groups of driving boxes. The invention provides the sun-shading and rain-shielding service for the device by arranging the sun-shading box, and can also provide the sun-shading and rain-shielding device, thereby avoiding the phenomenon that the sun-shading and rain-shielding device is turned over due to wind blowing, and ensuring that the sun-shading and rain-shielding device can continuously and stably provide the sun-shading and rain-shielding service for the transformer box body and the heat dissipation cabinet.

Description

110 kV-level resin-cast insulating transformer with three-phase integrated structure

Technical Field

The invention relates to the technical field of insulating transformers, in particular to a 110 kV-level resin casting insulating transformer with a three-phase integrated structure.

Background

Along with the rapid growth of national economy and the continuous expansion of urban scale, the development of a national power grid system is gradually deepened and improved, along with the growth of power consumption demand, a 110 KV-level terminal transformer substation gradually becomes the key point of urban power development, in China, the 110 KV-level transformer always takes an oil-immersed type as a main part, but transformer oil used by the oil-immersed transformer is a flammable and explosive substance, once a short-circuit fault occurs, the level and the range of the caused safety accident are difficult to estimate, so that the transformer oil is difficult to popularize in places with dense population and high explosion-proof requirements, and an epoxy resin pouring type insulating transformer is a transformer with high insulativity and no pollution and can be popularized and used as an urban power system.

The existing transformer has the defects that:

1. reference CN111091963A discloses an outdoor lightning protection type transformer, "including transformer protection cabinet, humidity transducer, motor and lightning rod body, top one side fixed mounting of transformer protection cabinet has humidity transducer, and transformer protection cabinet's bottom has seted up the reservation air cavity, the rod end fixedly connected with motor of lead screw, and movable mounting has the push pedal that keeps out the wind on the outer wall of lead screw, fixed mounting has an insulating ceramic section of thick bamboo on transformer protection cabinet's the avris outer wall, the lightning rod body is located the inner chamber, the top exit position department movable mounting of an insulating ceramic section of thick bamboo has the rubber ring, the one end inner wall that the insulating connecting rod is located the cover section of thick bamboo is fixed with the location block rubber. The outdoor lightning protection type transformer can be used and stored for protection by self, wind bending damage caused by external storage is reduced, wind and rain impact external force can be greatly reduced in the using process, the use protection of the lightning protection structure is achieved, the resistance of the device to wind power is realized by storing the lightning protection device, the sun-shading and rain-shielding service to the device cannot be considered during storage, and the functionality of the device is weakened;

2. the comparison document CN106158284A discloses a resin cast coil dry-type transformer structure and an assembly method thereof, which comprises a transformer body arranged on a base, wherein the transformer body comprises an iron core, an upper clamping piece, a lower clamping piece and high and low pressure resin coils, and the outer circumference of the iron core is sleeved with the low pressure resin coil and the high pressure resin coil respectively; the bottom pier seats of the high-pressure resin coil and the low-pressure resin coil are arranged on a cushion block and an insert which are arranged on a lower clamp, and a pressing block, an insert and a pressing plate are arranged at the tops of the high-pressure resin coil and the low-pressure resin coil and are pressed tightly by rotating a pressing nail through a screw hole of an upper clamp so as to tightly fix the high-pressure resin coil and the low-pressure resin coil; and pulling plates are arranged on two sides of the iron core column, and the upper end and the lower end of each pulling plate are respectively and fixedly connected with the upper clamping piece and the lower clamping piece through pins. The dry-type transformer structure enhances the stability of the iron core and the coil, and can avoid the displacement phenomenon of the high-low voltage resin coil in the transportation process of the transformer. The press block reinforcing ribs increase creepage distance, reduce partial discharge conditions and effectively improve the performance of the transformer, but when electric arcs generated by internal discharge of the device burn and damage the box body, corresponding explosion-proof protection measures cannot be taken for the device in time, so that the safety of the device is reduced;

3. the reference document CN210403438U discloses a safe-to-use buried transformer, which comprises a transformer body and a bearing plate, wherein a radiating pipe is arranged on the surface of the transformer body, a workbench is fixedly connected to the side surface of the transformer body, an oil purifier is arranged on the upper surface of the workbench, a fixing frame is fixedly connected to the side surface of the transformer body, an oil conservator is fixedly connected to the upper end of the fixing frame, and an oil level indicator is arranged on the surface of the oil conservator; through setting up filter screen and exhaust fan, make the device at radiating in-process, start the exhaust fan through control switch, under the effect of exhaust fan, make the heat that transformer body gave out discharge, make external gas get into through the shutter simultaneously, under the effect of filter screen, the influence of external dust entering to transformer body has been avoided, thereby make the heat that the device gave out get rid of fast, make the device can normally work, the life of the device has been prolonged, but the inside exhaust fan of device is when breaking down and lead to its rotational speed to reduce, the holistic ventilation cooling effect of device reduces, the inside heat of device can't in time discharge and lead to the inside temperature of device to rise, influence the safety of device internal component, consequently, need in time learn the exhaust fan position that breaks down and break down.

Disclosure of Invention

The invention aims to provide a 110 kV-level resin-cast insulating transformer with a three-phase integrated structure, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a110 kV-level resin casting insulation transformer with a three-phase integrated structure comprises a transformer box body and a shading box, wherein a box door is installed on the front side of the transformer box body through a hinge, a heat dissipation cabinet is installed on the back side of the transformer box body, the shading box is installed at the top of the transformer box body and comprises lightning rods, wing plates, folding rain-proof cloth, connecting rods, sliding chutes, electric telescopic rods, a first shaft rod and a second shaft rod, three groups of lightning rods which are arranged in parallel are installed at the top of the shading box, and inclined wing plates are installed on the front side and the back side of the shading box;

the transformer box comprises a transformer box body and is characterized in that two sets of symmetrically-arranged drive boxes are installed on the inner bottom wall of the transformer box body, metal rods are installed at the tops of the drive boxes, a coiling box is installed at the tops of the metal rods, two sets of parallelly-arranged explosion-proof oil tanks are installed on the inner bottom wall of the transformer box body, and the explosion-proof oil tanks are located between the two sets of drive boxes.

Preferably, first axostylus axostyle is installed to the tail end of pterygoid lamina, the surface mounting of first axostylus axostyle has folding rain cloth that keeps off, the perpendicular second axis pole of arranging is installed to folding rain cloth's inside equidistance, folding rain cloth that keeps off is close to the bottom of a side surface of transformer box and installs the connecting rod, two sets of symmetrical arrangement's spout is all installed at the front of transformer box and the back of heat dissipation cabinet, and wherein the positive two sets of spouts of transformer box are located the both sides of chamber door, electric telescopic handle is installed to the interior roof of spout, and electric telescopic handle's tail end and connecting rod are connected.

Preferably, the oil drum of rectangle is installed to the inside diapire of explosion-proof tank, U type post is installed at the top of oil drum, the connecting pipe of two sets of parallel arrangement's L type is installed at the top of oil drum, and two sets of connecting pipes are located the both sides of U type post respectively, the internally mounted of U type post has the hose, the both ends of connecting pipe extend respectively into inside of oil drum and inside hose of U type post inside, ground terminal is installed in the front of explosion-proof tank.

Preferably, 2 x 3 fans of arranging are installed to the back wall of heat dissipation cabinet, three parallel arrangement's of group pole setting are installed to the inside diapire of heat dissipation cabinet, and the pole setting is located the place ahead of fan, the back mounted of pole setting has pressure sensor, the state lamp of arranging about three groups is installed in the front of pole setting, and state lamp and pressure sensor electric connection, the foam-rubber cushion is all installed to the both sides inner wall of heat dissipation cabinet.

Preferably, driving motor is installed to the back wall of rolling box, driving motor's output is connected with the insulator spindle, the surface winding of insulator spindle has the coiling rope, and the tail end of coiling rope passes the inside of rolling box and twines on the surface of metal pole, the surface mounting of coiling rope has the metal guide piece of rectangle.

Preferably, the drive box is internally provided with a rotating motor, the output end of the rotating motor is provided with an insulating rotating rod, and the top end of the insulating rotating rod is connected with the tail end of the metal rod in an embedded manner.

Preferably, the transformer box body is formed by pouring epoxy resin, a coil rod is arranged on the inner bottom wall of the transformer box body and located between the two groups of anti-explosion oil tanks, and a ventilation opening is formed in the back face of the transformer box body.

Preferably, a card reader is installed on the front surface of the box door and is located behind the folding rain cloth.

Preferably, the three groups of status lights are green, yellow and red from top to bottom in sequence.

Preferably, the working steps of the device are as follows:

s1, when the transformer is used for providing transformation service for a 110 kV-level terminal transformer substation, after the transformer is installed, an electric telescopic rod is started, the connecting rod can be driven to move downwards through the extension of the electric telescopic rod, then the folding rain cloth is driven to move downwards, and further the unfolded and unfolded folding rain cloth can form an enclosure effect on a transformer box body and a heat dissipation cabinet, so that comprehensive sun-shading and rain-shading service is provided for the whole device, the damage of rainwater erosion caused by sunlight exposure to the whole device is avoided, in addition, the connecting rod is connected with the electric telescopic rod, the horizontal connection of the folding rain cloth, the transformer box body and the heat dissipation cabinet can be assisted, further, when the external environment of the device is windy, the folding rain cloth can be prevented from being lifted due to the influence of wind power, the rain-shading effect of response is lost, and the stable sun-shading and rain-shading effect of the folding rain cloth is ensured;

s2, when a short-circuit fault occurs on a coil rod inside a transformer box and a winding rope wound on the surface of a metal rod, high-temperature electric arcs generated by current can cause local combustion decomposition of the transformer box to generate a large amount of high-temperature gas, the high-temperature gas extrudes an explosion-proof oil tank at the moment, so that cooling oil inside an oil drum inside the explosion-proof oil tank is extruded by the high-temperature gas while being heated, the cooling oil inside the oil drum is transferred to the inside of a hose inside a U-shaped column through a connecting pipe to play a role in buffering and avoiding explosion of the oil drum, the hose can effectively avoid the possibility of explosion caused by sudden heating after entering the inside of the U-shaped column through the telescopic ductility during the process, and the explosion-proof safety of the explosion-proof oil tank is further ensured;

s3, when the device needs to be subjected to boosting and voltage transformation operation, the rotating motor is started, the insulating rotating rod can be driven to rotate, the metal rod can be driven to rotate after the insulating rotating rod rotates, then the winding rope wound on the surface of the metal rod synchronously rotates along with the metal rod, and then the winding number of the winding rope on the surface of the metal rod is increased;

s4, when the device needs to perform voltage reduction treatment, the rotating motor is turned off, the driving motor is turned on, the insulating rod is immediately driven to rotate, and then the winding rope wound on the surface of the insulating rod is driven to wind;

s5, the radiating cabinet is in the radiating process, wind power generated when the fan rotates enters the transformer box body through the ventilation opening, in the process, the wind power firstly passes through the pressure sensors on the backs of the vertical rods in one step, when six groups of fans in the radiating cabinet work normally, the pressure sensors mounted on the backs of the three groups of vertical rods all feel isobaric pressure values, at the moment, the green state lamps light up, when one group of fans break down to cause speed reduction rotation, the wind power value detected by the pressure sensors at the corresponding positions weakens, at the moment, the yellow state lamps light up, when one group of fans arranged up and down break down to cause speed reduction rotation, the red state lamps light up, so that a worker can quickly locate the position of the failed fan.

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

1. according to the invention, the lightning rod can play a lightning protection effect by installing the sun-shading box, the lightning rod, the wing plate, the folding rain-proof cloth, the connecting rod, the sliding chute, the electric telescopic rod, the first shaft rod and the second shaft rod, the device is protected from being struck by lightning, the arrangement of the wing plate can effectively expand the effective range of the device for shading the sun and shielding rain, and the arrangement of the folding rain-proof cloth, the connecting rod, the sliding chute, the electric telescopic rod, the first shaft rod and the second shaft rod can ensure that the folding rain-proof cloth can play a comprehensive rain-proof and sun-shading effect when being pulled down and tightened, and can resist the action of blowing and lifting of external wind power.

2. The anti-explosion oil tank is provided with the anti-explosion oil tank, the oil drum, the U-shaped column, the connecting pipe, the grounding terminal and the hose, wherein the grounding terminal is connected with the ground, so that the grounding effect can be achieved, the safety of the anti-explosion oil tank is protected, in addition, when a short circuit fault occurs to a coil in the transformer tank body, cooling oil in the oil drum is transferred to the inside of the hose in the U-shaped column through the connecting pipe, so that a buffer space is provided for the cooling oil after being heated and expanded, the explosion of the oil drum is avoided, the hose can effectively avoid the possibility of explosion caused by sudden heating after the cooling oil enters the U-shaped column through the telescopic ductility of the hose in the process, and the anti-explosion safety of the anti-explosion oil tank is further ensured.

3. The invention is provided with the heat dissipation cabinet, the fan, the upright post, the pressure sensor, the status light and the sponge pad, in the heat dissipation process of the heat dissipation cabinet, the noise generated by the rotation of the fan is absorbed by the sponge pad, the sound insulation and noise reduction effects can be achieved, when the wind power generated by the rotation of the fan passes through the pressure sensor on the back of the upright post when passing through the vent, when six groups of fans in the heat dissipation cabinet normally work, the pressure sensors arranged on the back of three groups of upright posts all feel isobaric pressure values, at the moment, the green status light lights up, when one group of fans fails to cause the deceleration rotation, the wind power value detected by the pressure sensor on the corresponding position weakens, at the moment, the yellow status light lights up, when certain two groups of fans arranged up and down fail to cause the deceleration rotation, the wind power value detected by the pressure sensor on the corresponding position weakens again, at the, so that the worker can quickly locate the position of the fault fan.

Drawings

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

FIG. 2 is a schematic view of the installation structure of the transformer tank, the heat dissipation cabinet and the sunshade box of the present invention;

FIG. 3 is a schematic view of the transformer tank, heat dissipation cabinet and door mounting structure of the present invention;

FIG. 4 is a schematic view of an assembly structure of the heat dissipation cabinet of the present invention;

FIG. 5 is a schematic view of the pole and pressure sensor mounting structure of the present invention;

FIG. 6 is a schematic view of an assembly structure of the blasting oil tank of the present invention;

FIG. 7 is a schematic view of the U-shaped post and hose mounting structure of the present invention;

FIG. 8 is a schematic view of a winding box mounting structure of the present invention;

fig. 9 is a schematic view of the driving case and metal rod mounting structure of the present invention.

In the figure: 1. a transformer tank body; 101. a coil rod; 102. a vent; 2. a heat dissipation cabinet; 201. a fan; 202. erecting a rod; 203. a sponge cushion; 204. a pressure sensor; 205. a status light; 3. a sunshade box; 301. a lightning rod; 302. a wing plate; 303. folding the rain-proof cloth; 304. a connecting rod; 305. a chute; 306. an electric telescopic rod; 307. a first shaft lever; 308. a second shaft lever; 4. an explosion-proof oil tank; 401. an oil drum; 402. a U-shaped column; 403. a connecting pipe; 404. a ground terminal; 405. a hose; 5. a rolling box; 501. a drive motor; 502. an insulating rod; 503. winding the rope; 504. a metal guide plate; 6. a drive cartridge; 601. a rotating electric machine; 602. an insulating rotating rod; 603. a metal rod; 7. a box door; 701. a card reader.

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 should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may 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. 1-9, an embodiment of the present invention is shown: a110 kV resin casting insulation transformer with a three-phase integrated structure comprises a transformer box body 1 and a shading box 3, wherein a box door 7 is installed on the front side of the transformer box body 1 through a hinge, the three-phase integrated transformation service can be provided for the device through the transformer box body 1, the box door 7 can be opened to be used for professional workers to maintain internal parts of the transformer box body 1, a heat dissipation cabinet 2 is installed on the back side of the transformer box body 1, the heat dissipation cabinet 2 can detect the working state of a fan 201 through the blowing size of internal wind power while providing the heat dissipation and cooling service for the device, so that the workers can quickly locate the position of the fault fan 201 to perform timely and quick overhaul operation, the shading box 3 is installed on the top of the transformer box body 1, the shading box 3 can provide shading and rain shielding services for the device and can also provide shading and rain shielding devices, the phenomenon that the sun-shading and rain-shielding device is turned over due to blowing of wind power is avoided, the sun-shading and rain-shielding device can be guaranteed to be continuously and stably used for providing sun-shading and rain-shielding service for the transformer box body 1 and the heat dissipation cabinet 2, the sun-shading box 3 comprises a lightning rod 301, wing plates 302, folding rain-shielding cloth 303, a connecting rod 304, a sliding chute 305, an electric telescopic rod 306, a first shaft rod 307 and a second shaft rod 308, three groups of lightning rods 301 which are arranged in parallel are installed at the top of the sun-shading box 3, inclined wing plates 302 are installed on the front side and the back side of the sun-shading box 3, the lightning rod 301 is installed at the topmost point of the sun-shading box 3, corresponding lightning protection can be achieved for the device, the wing plates 302 are designed in an inclined downward mode, and the effective range of sun-shading and rain shielding is expanded, and meanwhile the folding rain-shielding cloth 303 can be installed and hung to provide supporting functions;

two sets of driving boxes 6 which are symmetrically arranged are arranged on the inner bottom wall of the transformer box body 1 and can provide support for the boosting treatment of the device, a metal rod 603 is arranged on the top of the driving box 6, the metal rod 603 is made of metal and has electrical conductivity, a closed loop can be formed after the metal rod 603 is contacted with a metal guide sheet 504 on the surface of a winding rope 503, an electrical coil is formed, and further, the change of the number of turns of the electrical coil is possible, a winding box 5 is arranged on the top of the metal rod 603, the voltage reduction operation can be carried out by an auxiliary device through the matching of related components in the winding box 5, two sets of explosion-proof oil tanks 4 which are arranged in parallel are arranged on the inner bottom wall of the transformer box body 1, the explosion-proof oil tanks 4 are positioned in the middle of the two sets of driving boxes 6, the explosion-proof oil tanks 4 are used, the cooling oil in the inner part can absorb heat, the auxiliary device carries out heat dissipation and cooling treatment, when short circuit or abnormal temperature rise occurs in the coil in the inner part of the device, the safety of the internal cooling oil is protected, the cooling oil is prevented from exploding, and the safety of the device is protected.

Further, a first shaft 307 is installed at the tail end of the wing plate 302, a folding rain cloth 303 is installed on the surface of the first shaft 307, second shaft rods 308 which are vertically arranged are installed in the folding rain cloth 303 at equal intervals, a connecting rod 304 is installed at the bottom end of the folding rain cloth 303 close to one side surface of the transformer box 1, two sets of symmetrically arranged sliding grooves 305 are installed on the front surface of the transformer box 1 and the back surface of the heat dissipation cabinet 2, wherein the two sets of sliding grooves 305 on the front surface of the transformer box 1 are located on two sides of the box door 7, an electric telescopic rod 306 is installed on the inner top wall of the sliding groove 305, the tail end of the electric telescopic rod 306 is connected with the connecting rod 304, the electric telescopic rod 306 is started to extend downwards to drive the connecting rod 304 and the folding rain cloth 303 to move downwards, when the connecting rod 304 moves to the bottom of the sliding groove 305, the folding rain cloth 303 can be supported to a tight state, and further the transformer box 1 and the heat dissipation cabinet 2 can be surrounded, to the whole comprehensive sunshade rain protection that plays of device, furthermore, connecting rod 304 and electric telescopic handle 306's connection, can assist folding rain cloth 303 and transformer box 1 and heat dissipation cabinet 2 to realize the horizontal connection, and then when the device external environment rises to the wind, can avoid folding rain cloth 303 to receive the influence of wind-force to be lifted, lose the rain-proof effect of response, guarantee the stable sunshade rain effect of folding rain cloth 303, and when electric telescopic handle 306 upwards contracts, can drive connecting rod 304 upward movement, and then drive folding rain cloth 303 upwards folding, under the effect of second axle pole 308, can realize folding taking in of folding rain cloth 303 folding, and at this in-process, the existence of first axle pole 307, can guarantee that folding rain cloth 303 can not receive the restriction of pterygoid lamina 302 when ascending.

Furthermore, a rectangular oil drum 401 is installed on the bottom wall inside the explosion-proof oil tank 4, a U-shaped column 402 is installed on the top of the oil drum 401, two sets of L-shaped connecting pipes 403 which are arranged in parallel are installed on the top of the oil drum 401, the two sets of connecting pipes 403 are respectively located on two sides of the U-shaped column 402, a hose 405 is installed inside the U-shaped column 402, two ends of the connecting pipe 403 respectively extend into the inside of the oil drum 401 and the hose 405 inside the U-shaped column 402, a grounding terminal 404 is installed on the front surface of the explosion-proof oil tank 4, the grounding terminal 404 is connected with the ground, so that a grounding effect can be achieved, the safety of the explosion-proof oil tank 4 can be protected, in addition, when a short circuit fault occurs on a coil inside the transformer tank 1, a high-temperature arc generated by current can cause local combustion of the transformer tank 1 to generate a large amount of high-temperature gas, the generated gas extrudes the explosion-proof oil tank 4, so that cooling oil inside the oil drum 401 is heated and simultaneously extruded by the high-temperature gas, inside coolant oil of oil drum 401 shifts to inside hose 405 of U type post 402 through connecting pipe 403 this moment, plays the cushioning effect, avoids oil drum 401 to explode, and hose 405 is through its ductility that stretches out and draws back at this in-process, can effectively avoid coolant oil to get into the inside back of U type post 402 because of being heated suddenly and cause the possibility of explosion, has further guaranteed the explosion-proof security of explosion-proof oil tank 4.

Further, 2 x 3 arranged fans 201 are installed on the rear wall of the heat dissipation cabinet 2, three sets of upright rods 202 arranged in parallel are installed on the bottom wall inside the heat dissipation cabinet 2, the upright rods 202 are located in front of the fans 201, pressure sensors 204 are installed on the back of the upright rods 202, three sets of status lights 205 arranged up and down are installed on the front of the upright rods 202, the status lights 205 are electrically connected with the pressure sensors 204, sponge pads 203 are installed on the inner walls on the two sides of the heat dissipation cabinet 2, in the heat dissipation process of the heat dissipation cabinet 2, noise generated when the fans 201 rotate is absorbed by the sponge pads 203, the effects of sound insulation and noise reduction can be achieved, wind power generated when the fans 201 rotate enters the interior of the transformer box 1 through the ventilation openings 102, in the process, the wind power further passes through the pressure sensors 204 on the back of the upright rods 202, when six sets of fans 201 inside the heat dissipation cabinet 2 all work normally, the pressure sensors 204 installed on the back of the three sets of upright rods 202 all feel isobaric pressure values, at the moment, the green status light 205 is turned on, when one group of fans 201 has a fault and causes the speed reduction rotation, the wind force value detected by the pressure sensor 204 at the corresponding position is weakened, at the moment, the yellow status light 205 is turned on, when two groups of fans 201 arranged up and down have a fault and cause the speed reduction rotation, the wind force value detected by the pressure sensor 204 at the corresponding position is weakened again, and at the moment, the red status light 205 is turned on, so that a worker can quickly locate the position of the fault fan 201.

Further, a driving motor 501 is installed on the rear wall of the winding box 5, an output end of the driving motor 501 is connected with an insulating rod 502, a winding rope 503 is wound on the surface of the insulating rod 502, the tail end of the winding rope 503 penetrates through the winding box 5 and is wound on the surface of the metal rod 603, a rectangular metal guide sheet 504 is installed on the surface of the winding rope 503, after the driving motor 501 is started, the insulating rod 502 is driven to rotate, the winding rope 503 on the surface of the metal rod 603 is driven to be wound on the surface of the insulating rod 502, the number of turns of effective coils on the surface of the metal rod 603 is reduced, the metal guide sheet 504 is attached to the surface of the metal rod 603 along with the winding rope 503 to form a closed loop with the metal rod 603, an electrified coil can be formed, the auxiliary device performs corresponding voltage boosting and reducing operations, and further reduces the necessity of assembling of multiple sets of transformers, and further achieves a corresponding three-phase integrated effect, the floor area of the device is reduced.

Further, the internally mounted of drive box 6 has rotating electrical machines 601, insulating bull stick 602 is installed to the output of rotating electrical machines 601, and the top of insulating bull stick 602 is connected with the tail end gomphosis of metal pole 603, after rotating electrical machines 601 started, can drive insulating bull stick 602 and rotate, then drive metal pole 603 and rotate, then realize the roll-up of metal pole 603 surface coiling rope 503 and handle, in order to increase the number of turns of metal pole 603 surface active coil, realize the pressure boost purpose, because insulating bull stick 602 is made for insulating material, can't form closed circuit between it and the metal pole 603, consequently can guarantee the circuit safety between metal pole 603 and the rotating electrical machines 601.

Further, transformer box 1 pours for epoxy and forms, epoxy has better insulating nature and neier nature and electrical insulation, therefore can guarantee that transformer box 1's service life is longer, coil pole 101 is installed to transformer box 1's inside diapire, and coil pole 101 is located the centre of two sets of explosion-proof oil tanks 4, through the relevant operation of rolling up case 5 and drive box 6, can drive that the number of turns of metal pole 603 surface coil changes with coil pole 101 surface coil turns ratio, and then play corresponding step-up step-down effect, transformer box 1's the back is equipped with vent 102, can make things convenient for the inside wind-force of blowing of heat dissipation cabinet 2 to shift to transformer box 1 inside and carry out the ventilation cooling operation.

Further, a card reader 701 is installed on the front surface of the box door 7, the card reader 701 is located behind the folding waterproof cloth 303, and the card reader 701 is used for identifying a chip card, so that an anti-theft effect can be achieved on the box door 7, and the anti-theft effect of the device is enhanced.

Further, the three groups of status lights 205 are green, yellow and red in sequence from top to bottom, when the color of the status light 205 is green, it indicates that the fans 201 inside the heat dissipation cabinet 2 are all in a normal state, when the color of the status light 205 is yellow, it indicates that one of the two groups of fans 201 arranged up and down corresponding to the status light 205 fails, when the color of the status light 205 is red, it indicates that the two groups of fans 201 arranged up and down corresponding to the status light 205 fail, and through the color of the status light 205, the failure position and the failure number of the fans 201 can be determined, and the failed fans 201 can be quickly located.

Further, the working steps of the device are as follows:

s1, when the transformer is used for providing transformation service for a 110 kV-level terminal substation, after the transformer is installed, the electric telescopic rod 306 is started, the connecting rod 304 can be driven to move downwards by the extension of the electric telescopic rod 306, and then the folding rain-proof cloth 303 is driven to move downwards, so that the unfolded and stretched foldable rain-proof cloth 303 can form an enclosing effect on the transformer tank body 1 and the heat dissipation cabinet 2, further providing comprehensive sun-shading and rain-shielding service for the whole device, avoiding the damage of rain erosion caused by sunlight solarization to the whole device, and in addition, the connection of the connecting rod 304 and the electric telescopic rod 306, the folding rain-proof cloth 303 can be assisted to be horizontally connected with the transformer box body 1 and the heat dissipation cabinet 2, when the external environment of the device is windy, the folding rain-proof cloth 303 can be prevented from being lifted under the influence of wind force and losing the rain-proof effect of response, and the stable sun-shading and rain-proof effect of the folding rain-proof cloth 303 is ensured;

s2, when a short-circuit fault occurs on a coil rod 101 in a transformer box 1 and a winding rope 503 wound on the surface of a metal rod 603, a high-temperature arc generated by current can cause partial combustion decomposition of the transformer box 1 to generate a large amount of high-temperature gas, the high-temperature gas extrudes an explosion-proof oil tank 4 at the moment, so that cooling oil in an oil drum 401 in the explosion-proof oil tank 4 is extruded by the high-temperature gas while being heated, the cooling oil in the oil drum 401 is transferred to a hose 405 in a U-shaped column 402 through a connecting pipe 403 to play a role in buffering, explosion of the oil drum 401 is avoided, the hose 405 can effectively avoid explosion caused by sudden heating after the cooling oil enters the U-shaped column 402 through the telescopic ductility during the process, and the explosion-proof safety of the explosion-proof oil tank 4 is further ensured;

s3, when the device needs to be subjected to voltage boosting and transforming operations, the rotating motor 601 is started, the insulating rotating rod 602 can be driven to rotate, the metal rod 603 can be driven to rotate after the insulating rotating rod 602 rotates, then the winding rope 503 wound on the surface of the metal rod 603 synchronously rotates along with the metal rod 603, and then the number of winding turns of the winding rope 503 on the surface of the metal rod 603 is increased, in the process, the metal guide piece 504 on the surface of the winding rope 503 is attached to the metal rod 603, an effective closed circuit can be formed, and then a corresponding voltage boosting effect is achieved along with the increase of the number of winding turns of the winding rope 503 on the surface of the metal rod 603;

s4, when the device needs to be subjected to pressure reduction treatment, the rotating motor 601 is turned off, the driving motor 501 is turned on, the insulating rod 502 is immediately driven to rotate, and then the winding rope 503 wound on the surface of the insulating rod 502 is driven to wind, in the process, the number of turns of the winding rope 503 wound on the surface of the insulating rod 502 is increased, the number of turns of the winding rope 503 wound on the surface of the metal rod 603 is reduced, a closed loop cannot be formed by the metal guide piece 504 on the surface of the winding rope 503 and the surface of the insulating rod 502, and the stability of the effective number of turns of the winding rope 503 wound on the surface of the metal rod 603 can be ensured;

s5, in the heat dissipation process of the heat dissipation cabinet 2, wind power generated when the fans 201 rotate enters the transformer box 1 through the ventilation openings 102, in the process, the wind power firstly passes through the pressure sensors 204 on the back surfaces of the upright posts 202 in one step, when six groups of fans 201 in the heat dissipation cabinet 2 all work normally, the pressure sensors 204 arranged on the back surfaces of the three groups of upright posts 202 all feel isobaric pressure values, at the moment, the green state lamps 205 are lightened, when one group of fans 201 fails to rotate at a reduced speed, the wind power value detected by the pressure sensors 204 in the corresponding positions is weakened, at the moment, the yellow state lamps 205 are lightened, when one group of fans 201 arranged up and down fails to rotate at a reduced speed, the red state lamps 205 are lightened, and therefore a worker can quickly locate the position of the failed fan 201.

The working principle is as follows: when the transformer is used for providing transformation service for a 110 kV-level terminal substation, after the transformer is installed, the electric telescopic rod 306 is started, the connecting rod 304 can be driven to move downwards through the extension of the electric telescopic rod 306, and then the folding rain cloth 303 is driven to move downwards, so that the unfolded and unfolded folding rain cloth 303 can form an enclosure effect on the transformer box body 1 and the heat dissipation cabinet 2, further comprehensive sun-shading and rain-shading service is provided for the whole device, the damage of rainwater erosion caused by sunlight exposure to the whole device is avoided, in addition, the connection of the connecting rod 304 and the electric telescopic rod 306 can assist the folding rain cloth 303 to be horizontally connected with the transformer box body 1 and the heat dissipation cabinet 2, further, when the external environment of the device is windy, the folding rain cloth 303 can be prevented from being lifted due to the influence of wind force, the rain-shading effect of response is lost, and the stable sun-shading and rain-shading effect of the folding rain cloth 303 is ensured, when short-circuit fault occurs on the coil rod 101 inside the transformer tank 1 and the winding rope 503 wound on the surface of the metal rod 603, high-temperature electric arc generated by current can cause local combustion decomposition of the transformer tank 1 to generate a large amount of high-temperature gas, at the moment, the high-temperature gas extrudes the explosion-proof oil tank 4, so that the cooling oil inside the oil drum 401 inside the explosion-proof oil tank 4 is extruded by the high-temperature gas while being heated, at the moment, the cooling oil inside the oil drum 401 is transferred to the inside of the hose 405 inside the U-shaped column 402 through the connecting pipe 403 to play a role of buffering and avoiding explosion of the oil drum 401, in the process, the hose 405 can effectively avoid the possibility of explosion caused by sudden heating after the cooling oil enters the U-shaped column 402 through the telescopic ductility of the hose, so that the explosion-proof safety of the explosion-proof oil tank 4 is further ensured, when the voltage boosting transformation operation needs to be performed on the device, the rotary motor 601 is started to drive the insulating rotary rod 602 to rotate, after the insulating rotating rod 602 rotates, the metal rod 603 can be driven to rotate, then the winding rope 503 wound on the surface of the metal rod 603 rotates synchronously with the metal rod 603, and then the number of winding turns of the winding rope 503 on the surface of the metal rod 603 is increased, in the process, the metal guide sheet 504 on the surface of the winding rope 503 is attached to the metal rod 603, an effective closed circuit can be formed, and further a corresponding boosting effect is achieved along with the increase of the number of winding turns of the winding rope 503 on the surface of the metal rod 603, when the device needs to perform voltage reduction treatment, the rotating motor 601 is turned off, the driving motor 501 is turned on, the insulating rod 502 is driven to rotate immediately, then the winding rope 503 wound on the surface of the insulating rod 502 is driven to wind, in the process, the number of winding turns of the winding rope 503 on the surface of the insulating rod 502 is increased, the number of winding turns of the winding rope 503 on the surface of the metal rod 603 is reduced, and the metal guide sheet 504 on the surface of the winding rope 503 and the surface of the insulating rod 502 cannot form a closed loop, the stability of the effective turns of the winding rope 503 wound on the surface of the metal rod 603 can be ensured, and in the heat dissipation process of the heat dissipation cabinet 2, wind generated when the fan 201 rotates enters the inside of the transformer tank 1 through the ventilation opening 102, in the process, wind power firstly passes through the pressure sensor 204 on the back of the upright rod 202, and when six groups of fans 201 in the heat dissipation cabinet 2 work normally, the pressure sensors 204 arranged on the back surfaces of the three groups of upright posts 202 all sense equal-pressure values, at the moment, the green status light 205 is lightened, and when one group of fans 201 fails to work and rotate slowly, the wind force value detected by the pressure sensor 204 at the corresponding position is weakened, and the yellow status light 205 is lighted, when a certain two groups of fans 201 arranged up and down are in fault and rotate in a decelerating manner, the red status light 205 is turned on, so that a worker can quickly locate the position of the fault fan 201.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a 110kV level resin pouring insulating transformer with three-phase integral structure, includes transformer box (1) and sunshade box (3), its characterized in that: the transformer box comprises a transformer box body (1), a box door (7) is installed on the front side of the transformer box body (1) through a hinge, a heat dissipation cabinet (2) is installed on the back side of the transformer box body (1), a sun-shading box (3) is installed on the top of the transformer box body (1), the sun-shading box (3) comprises lightning rods (301), wing plates (302), folding rain-shielding cloth (303), connecting rods (304), a sliding groove (305), an electric telescopic rod (306), a first shaft rod (307) and a second shaft rod (308), three groups of lightning rods (301) which are arranged in parallel are installed on the top of the sun-shading box (3), and inclined wing plates (302) are installed on the front side and the back side of the sun-shading box (3);

the transformer box is characterized in that two sets of symmetrically-arranged driving boxes (6) are installed on the inner bottom wall of the transformer box body (1), metal rods (603) are installed at the top of the driving boxes (6), a coiling box (5) is installed at the top of the metal rods (603), two sets of parallelly-arranged explosion-proof oil tanks (4) are installed on the inner bottom wall of the transformer box body (1), and the explosion-proof oil tanks (4) are located in the middle of the two sets of driving boxes (6).

2. The 110 kV-level resin-cast insulation transformer with the three-phase integrated structure as claimed in claim 1, wherein: first axostylus axostyle (307) is installed to the tail end of pterygoid lamina (302), surface mounting of first axostylus axostyle (307) has folding rain cloth (303) that keeps off, the inside equidistance of folding rain cloth (303) is installed second axostylus axostyle (308) of arranging perpendicularly, connecting rod (304) are installed to the bottom that folding rain cloth (303) are close to a side surface of transformer box (1), two sets of symmetrical arrangement's spout (305) are all installed to the front of transformer box (1) and the back of heat dissipation cabinet (2), and wherein two sets of spout (305) that transformer box (1) is positive are located the both sides of chamber door (7), electric telescopic handle (306) are installed to the interior roof of spout (305), and the tail end and the connecting rod (304) of electric telescopic handle (306) are connected.

3. The 110 kV-level resin-cast insulation transformer with the three-phase integrated structure as claimed in claim 1, wherein: oil drum (401) of rectangle is installed to the inside diapire of explosion-proof oil tank (4), U type post (402) are installed at the top of oil drum (401), connecting pipe (403) of the L type of two sets of parallel arrangement are installed at the top of oil drum (401), and two sets of connecting pipe (403) are located the both sides of U type post (402) respectively, the internally mounted of U type post (402) has hose (405), the both ends of connecting pipe (403) extend respectively into inside of oil drum (401) and inside hose (405) of U type post (402), ground terminal (404) are installed in the front of explosion-proof oil tank (4).

4. The 110 kV-level resin-cast insulation transformer with the three-phase integrated structure as claimed in claim 1, wherein: fan (201) that 2 x 3 arranged are installed to the back wall of heat dissipation cabinet (2), three parallel arrangement's of group pole setting (202) are installed to the inside diapire of heat dissipation cabinet (2), and pole setting (202) are located the place ahead of fan (201), pressure sensor (204) are installed to the back of pole setting (202), state lamp (205) of arranging about three groups are installed in the front of pole setting (202), and state lamp (205) and pressure sensor (204) electric connection, foam-rubber cushion (203) are all installed to the both sides inner wall of heat dissipation cabinet (2).

5. The 110 kV-level resin-cast insulation transformer with the three-phase integrated structure as claimed in claim 1, wherein: driving motor (501) are installed to the back wall of rolling box (5), driving motor's (501) output is connected with insulator spindle (502), the surface winding of insulator spindle (502) has rolling rope (503), and the tail end of rolling rope (503) passes the inside of rolling box (5) and twines on the surface of metal pole (603), the surface mounting of rolling rope (503) has the metal guide piece (504) of rectangle.

6. The 110 kV-level resin-cast insulation transformer with the three-phase integrated structure as claimed in claim 1, wherein: the inside mounting of drive box (6) has rotating electrical machines (601), insulating bull stick (602) is installed to the output of rotating electrical machines (601), and the top of insulating bull stick (602) is connected with the tail end gomphosis of metal pole (603).

7. The 110 kV-level resin-cast insulation transformer with the three-phase integrated structure as claimed in claim 1, wherein: the transformer box body (1) is formed by pouring epoxy resin, a coil rod (101) is installed on the inner bottom wall of the transformer box body (1), the coil rod (101) is located between the two groups of anti-explosion oil tanks (4), and a ventilation opening (102) is formed in the back face of the transformer box body (1).

8. The 110 kV-level resin-cast insulation transformer with the three-phase integrated structure as claimed in claim 1, wherein: the front surface of the box door (7) is provided with a card reader (701), and the card reader (701) is positioned behind the folding rain cloth (303).

9. The 110 kV-level resin-cast insulation transformer with the three-phase integrated structure as claimed in claim 4, wherein: the three groups of status lights (205) are green, yellow and red from top to bottom in sequence.

10. A 110kV resin-cast insulating transformer with three-phase integrated structure according to any one of claims 1 to 9, characterized in that the working steps of the device are as follows:

s1, when the transformer is used for providing transformation service for a 110 kV-level terminal transformer substation, after the transformer is installed, the electric telescopic rod (306) is started, the connecting rod (304) can be driven to move downwards through the extension of the electric telescopic rod (306), then the folding rain cloth (303) is driven to move downwards, so that the unfolded and unfolded folding rain cloth (303) can form a surrounding effect on the transformer box body (1) and the heat dissipation cabinet (2), further, the comprehensive sun-shading and rain-shielding service is provided for the whole device, the damage of sunlight exposure to the whole device is avoided, in addition, the connection of the connecting rod (304) and the electric telescopic rod (306) can assist the horizontal connection of the folding rain cloth (303) with the transformer box body (1) and the heat dissipation cabinet (2), further, when the external environment of the device is windy, the folding rain cloth (303) can be prevented from being lifted due to the influence of wind, the rain shielding effect of response is lost, and the stable sun-shading and rain-shielding effect of the folding rain-shielding cloth (303) is ensured;

s2, when the surface of the coil rod (101) in the transformer box body (1) and the coiling rope (503) wound on the surface of the metal rod (603) has short circuit fault, the high-temperature electric arc generated by the current can cause the partial combustion decomposition of the transformer tank body (1) to generate a large amount of high-temperature gas, and the high-temperature gas extrudes the explosion-proof oil tank (4), further, the cooling oil in the oil drum (401) in the explosion-proof oil tank (4) is extruded by high-temperature gas while being heated, and the cooling oil in the oil drum (401) is transferred to the inside of the hose (405) in the U-shaped column (402) through the connecting pipe (403) to play a role in buffering and avoid the explosion of the oil drum (401), in the process, the flexible pipe (405) can effectively avoid the possibility of explosion caused by sudden heating after cooling oil enters the U-shaped column (402) through the telescopic ductility of the flexible pipe, so that the explosion-proof safety of the explosion-proof oil tank (4) is further ensured;

s3, when the device needs to be subjected to voltage boosting and voltage transforming operation, the rotating motor (601) is started, the insulating rotating rod (602) can be driven to rotate, the metal rod (603) can be driven to rotate after the insulating rotating rod (602) rotates, then the coiling rope (503) wound on the surface of the metal rod (603) synchronously rotates along with the metal rod (603), and then the number of winding turns of the coiling rope (503) wound on the surface of the metal rod (603) is increased, in the process, the metal guide sheet (504) on the surface of the coiling rope (503) is attached to the metal rod (603), an effective closed circuit can be formed, and then a corresponding voltage boosting effect is achieved along with the increase of the number of winding turns of the coiling rope (503) on the surface of the metal rod (603);

s4, when the device needs to be subjected to pressure reduction treatment, the rotating motor (601) is turned off, the driving motor (501) is turned on, the insulating rod (502) is immediately driven to rotate, and then the winding rope (503) wound on the surface of the insulating rod (502) is driven to wind, in the process, the number of winding turns of the winding rope (503) wound on the surface of the insulating rod (502) is increased, the number of winding turns of the winding rope (503) wound on the surface of the metal rod (603) is reduced, a closed loop cannot be formed by the metal guide sheet (504) on the surface of the winding rope (503) and the surface of the insulating rod (502), and the stability of the effective number of turns of the winding rope (503) wound on the surface of the metal rod (603;

s5, in the heat dissipation process of the heat dissipation cabinet (2), wind power generated when the fan (201) rotates enters the transformer box body (1) through the ventilation opening (102), in the process, wind power firstly passes through the pressure sensor (204) on the back of the upright post (202), when six groups of fans (201) in the heat dissipation cabinet (2) work normally, pressure sensors (204) arranged on the back surfaces of three groups of upright posts (202) all feel equal-pressure values, at the moment, green state lamps (205) are lightened, when one group of fans (201) break down to cause deceleration rotation, the wind power value detected by the pressure sensor (204) at the corresponding position is weakened, at the moment, the yellow state lamp (205) is lightened, when the fans (201) arranged up and down in a certain two groups are failed to cause speed reduction and rotation, the red status lamp (205) is turned on, so that a worker can quickly locate the position of the failed fan (201).