CN115662736A

CN115662736A - Power transformer

Info

Publication number: CN115662736A
Application number: CN202211371058.8A
Authority: CN
Inventors: 步天龙; 陈浩; 张东慧; 高振; 常剑楠
Original assignee: Hulun Buir Power Supply Company State Grid Inner Mongolia Eastern Electric Power Co ltd; State Grid Corp of China SGCC
Current assignee: Hulun Buir Power Supply Company State Grid Inner Mongolia Eastern Electric Power Co ltd; State Grid Corp of China SGCC
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-01-31

Abstract

The invention relates to a power transformer, which comprises a base, a transformer body, a plurality of moving devices, a protective device, a plurality of lifting devices, a plurality of fixing devices and a control system, wherein the moving devices are arranged on the base; the lifting device comprises a first hydraulic cylinder, a supporting seat and a protective pipe; the protective device comprises a plurality of oil through pipes, an oil storage tank, a piston head and a plurality of first connecting rods; the moving device comprises a moving wheel and a supporting rod; the supporting rod is vertically arranged below the transformer body, and the upper part of the supporting rod is connected with the transformer body; the movable wheel is arranged at the lower part of the support rod, is positioned in the protective tube and is soaked in oil liquid; the fixing devices correspond to the protection pipes and are used for fixing the supporting rod; the control system is connected with the protection device, the lifting devices and the fixing devices. According to the invention, the technical problems of how to automatically maintain the universal wheel through oil and how to automatically recover the oil are solved by automatically injecting and recovering the oil into the protective pipe.

Description

Power transformer

Technical Field

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

Background

The transformer is a device for changing alternating voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil and an iron core. The main functions are voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization and the like.

Chinese patent publication No. CN208819700U discloses a transformer with strong harmonic-wave-proof capability, wherein the lower end of the damping mechanism is provided with a universal wheel which is abutted against a bottom plate, and a return mechanism is arranged between the damping mechanism and the bottom plate. The vibration that the body produced is multidirectional, mainly can decompose into vertical and mutually perpendicular circumference two parts, in the vertical direction under the effect of spring, plays the shock attenuation buffering of vertical direction, reduces vibrations.

Among the prior art, when needs remove the transformer, the universal wheel can rust and damage owing to do not receive the maintenance for a long time, leads to the unable condition of removing to the transformer through the universal wheel to it is very troublesome to make the removal of transformer.

Disclosure of Invention

The invention provides a power transformer, and aims to solve the technical problems of how to automatically maintain a universal wheel through oil and how to automatically recover the oil.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a power transformer comprises a base, a transformer body, a plurality of moving devices, a protective device, a plurality of lifting devices, a plurality of fixing devices and a control system. The base is internally provided with an installation cavity. A plurality of elevating gear correspond with a plurality of mobile device, set up inside the installation cavity, and elevating gear includes first pneumatic cylinder, supporting seat, protective tube. The protective tube is vertically arranged in the installation cavity, and the upper end of the protective tube upwards penetrates through the base and extends to the top surface of the base. The supporting seat is arranged in the protective tube, the side surface of the supporting seat is provided with a sealing layer, and the sealing layer is tightly attached to the inner side surface of the protective tube. Inside the vertical installation cavity that is fixed in of first pneumatic cylinder, be in under the supporting seat, the flexible end and the supporting seat of first pneumatic cylinder are fixed. The protection device comprises a plurality of oil through pipes, an oil storage tank, a piston head and a plurality of first connecting rods. The oil storage tank is arranged in the mounting cavity, an opening is formed in the upper portion of the oil storage tank, and the cross-sectional area of the oil storage tank is smaller than the sum of the cross-sectional areas of the protection pipes. The piston head is arranged in the oil storage tank, the side face of the piston head is tightly attached to the inner side face of the oil storage tank, and the piston head is connected with the telescopic ends of the first hydraulic cylinders through the first connecting rods respectively. The oil siphunculus is the hose, and a plurality of oil siphunculus are corresponding with a plurality of supporting seats, and the lower extreme of oil siphunculus communicates with the bottom of oil storage tank, and the upper end upwards runs through corresponding supporting seat and extends to supporting seat top surface department, is provided with first filter screen in the up end mouth of oil siphunculus. The transformer body is arranged above the base, and the moving device comprises moving wheels and supporting rods. The support rod is vertically arranged below the transformer body, and the upper part of the support rod is connected with the transformer body. The movable wheel is arranged at the lower part of the support rod, is positioned in the protective tube and is soaked in oil liquid. The fixing devices correspond to the protection pipes and are used for fixing the supporting rod. The control system is connected with the protection device, the lifting devices and the fixing devices.

When the transformer body is required to be installed on the base, the worker firstly pushes the transformer body to the base, the movable wheel falls on the supporting seat, then the supporting seat descends through the first hydraulic cylinder, the supporting seat drives the transformer body to descend, and the movable wheel enters the protective tube. Simultaneously, first pneumatic cylinder drives the piston head decline, impresses the fluid in the oil storage tank in the protecting tube through the oil siphunculus, and the wheel is removed in the submergence, prevents to remove the wheel and rusts the damage. And finally, fixing the support rod through a fixing device. When the transformer body and the base need to be detached, the fixing device is controlled to release the supporting rod, then the supporting seat is lifted through the first hydraulic cylinder, the transformer body is lifted, and the movable wheels are lifted out of the protective pipe. Meanwhile, the first hydraulic cylinder drives the piston head to ascend, oil in the protective pipe is sucked into the oil storage tank through the oil through pipe, and the oil is recovered. And then, the worker moves the transformer body to a required position through the moving wheels. Through setting up the supporting seat, can prevent that rainwater and dust from getting into in the protective tube when the base does not install transformer body.

Furthermore, the mobile device comprises a damping spring, a damping cylinder, a sealing sheet and an energy consumption sheet. The transformer body is oil-immersed. The damper cylinder is vertically fixed on the lower part of the transformer body, and the upper part of the damper cylinder is communicated with the oil liquid in the transformer body. The bracing piece sets up in the damper cylinder below, inside its upper portion run through the damper cylinder and extend to the damper cylinder, the side of bracing piece is vertical to be provided with a plurality of first slides, is provided with first slider in the first slide, and first slider is fixed with the damper cylinder. The sealing sheet is arranged in the shock absorption cylinder, is tightly connected with the inner side surface of the shock absorption cylinder and is fixed with the upper part of the supporting rod. The energy dissipation piece is fixed in the damping cylinder and is positioned above the sealing piece, and a plurality of energy dissipation holes which are communicated up and down are formed in the energy dissipation piece. The damping spring is vertically arranged in the damping cylinder and is positioned between the sealing sheet and the energy dissipation sheet, the lower part of the damping spring is connected with the sealing sheet, the upper part of the damping spring is connected with the energy dissipation sheet, and the damping spring is in a compressed state.

When the transformer body is fixed on the base, if the transformer body vibrates, the supporting rod can be driven to slide in the damping cylinder, so that the damping spring stretches and retracts in a reciprocating mode, and the damping effect on the transformer body is achieved. The bracing piece drives gasket reciprocating motion in the damper cylinder simultaneously, and reciprocal suction and the discharge fluid stir the inside fluid of transformer body, improve the radiating effect of transformer body. When the transformer body moves, the movement of the transformer body is more stable through the damping spring. The energy dissipation piece is arranged, so that kinetic energy of oil can be converted into heat, and the damping effect of the mobile device is improved. When the inside serious time that generates heat of vary voltage intensity body, can make pressure rise, make damper cylinder and bracing piece produce the slip through the gasket, make damping spring extension, protect the transformer body. The upper portion of damper cylinder and the inside fluid intercommunication of transformer body can improve the shock attenuation effect through fluid.

Furthermore, the oil in the oil storage tank is the same as the oil in the transformer body. The mobile device comprises a rubber plug and a support ring. The support ring is sleeved on the corresponding support rod, is tightly attached to the top surface of the base, covers the upper port of the protection tube, is connected with the support rod, and is provided with a rubber layer on the bottom surface. The rubber buffer is sleeved on the supporting rod, is fixed with the bottom of the supporting ring, is positioned in the protective tube and is adaptive to the inner wall of the protective tube. The support rod is internally provided with a sliding rod in a sliding mode, the sliding rod is vertically arranged, the upper end of the sliding rod penetrates through the sealing sheet and extends into the damping cylinder, the lower portion of the sliding rod is connected with a return spring, the return spring is in a stretching state, a communicating channel is vertically arranged inside the sliding rod and is communicated with the side portion of the upper end of the sliding rod upwards, the upper end of the communicating channel is located above the sealing sheet and matched with the sliding distance of the sliding rod, and a filter is arranged in the communicating channel. The fixing device comprises a fixing rod, a driving device and a fixing groove. The fixed slot sets up on the inside wall of protective tube. One end of the fixed rod transversely penetrates through the supporting rod, the sliding rod and the communicating channel and extends into the fixed groove, the other end of the fixed rod penetrates through the protective pipe and extends to the outer side of the protective pipe, the fixed rod is connected with the driving device, the communicating hole is formed in the fixed rod and communicates the communicating channel with the interior of the protective pipe, one end, far away from the driving device, of the fixed rod is provided with a first pushing surface, and the first pushing surface is an inclined surface facing the obliquely upper side and is matched with the sliding rod. The axis directions of the fixed rods of the plurality of fixing devices are arranged in a mutually crossed manner. The upper port of the communicating channel is matched with the sliding distance of the sliding rod, and the upper port of the communicating channel can be sealed after the sliding rod slides downwards. The first pushing surface is an inclined surface facing to the inclined upper side and matched with the sliding rod, and the first pushing surface pushes the fixing rod to penetrate through the sliding rod.

When the transformer body descends along with the supporting seat, the rubber plug and the supporting ring are driven to descend simultaneously, the protecting tube is sealed through the rubber plug, and the transformer body is supported through the supporting ring. When the fixing device is required to fix the supporting rod, the fixing rod is moved inwards through the driving device and inserted into the through hole of the sliding rod, the sliding rod is made to slide upwards through the first pushing surface, and oil in the shock absorption cylinder is communicated with oil in the protective pipe. The transformer comprises a transformer body, a damping cylinder, a protective cylinder, an oil through pipe and an oil storage tank, wherein the transformer body is internally provided with the damping cylinder, the protective cylinder, the oil through pipe and the oil storage tank to form an annular oil cavity, and the transformer body is radiated by the oil storage tank. Seal the protective tube through the rubber plug, prevent that fluid from overflowing from the protective tube, and can be waterproof. When the transformer body is detached from the base, the sliding rod slides downwards through the reset spring to seal the damping cylinder, so that oil inside the damping cylinder is prevented from flowing out.

Furthermore, the moving device comprises an auxiliary spring, a limiting sheet and a plurality of second sliding blocks. The limiting piece is sleeved on the supporting rod, fixed with the supporting rod, positioned above the supporting ring and connected with the supporting ring. The auxiliary spring is sleeved on the support rod and positioned above the support ring, the upper end of the auxiliary spring is connected with the support rod, the lower end of the auxiliary spring is connected with the support ring, and the auxiliary spring is in a compressed state. The rubber plug and the support ring are respectively connected with the support rod in a sliding way. The second slider sets up in first slide, and is fixed with the supporting ring, and when the supporting ring slided the below, the rubber buffer was sealed the penetrating port of fixed rod to the bracing piece.

When the transformer body is detached from the base, the auxiliary spring extends to enable the rubber plug and the supporting ring to slide downwards on the supporting rod, and the penetrating port of the supporting rod is sealed by the fixing rod, so that the sliding rod is prevented from moving upwards under the air pressure difference between external air pressure and internal air pressure of the damping cylinder when the damping device works, and oil in the damping cylinder is prevented from leaking. And a limiting sheet is arranged for limiting the support ring. The first slideway is used as a slideway of the support rod and the support ring and is used as the lowest point limit of the support ring.

Furthermore, the driving device comprises a plurality of fixed springs, a lifting plate and an auxiliary plate. The intercommunicating pore is a waist-shaped pore which is communicated up and down, the transverse length of the intercommunicating pore is larger than the diameter of the supporting rod and smaller than the thickness of the side wall of the protective pipe. The lifting plate is vertically arranged on the side of the protective pipe, the lower portion of the lifting plate is fixed with the telescopic end of the first hydraulic cylinder, the upper portion of the lifting plate is provided with a second pushing surface, and the second pushing surface is an inclined surface and matched with the communicating hole. The auxiliary plate is vertically arranged on the outer side of the protective pipe, is fixed with one end of the fixing rod and is matched with the second pushing surface. The fixing springs are transversely arranged between the auxiliary plate and the protective tube, two ends of the fixing springs are respectively connected with the auxiliary plate and the protective tube, and the fixing springs are in a stretching state. The second pushing surface is an inclined surface and matched with the communicating hole, and the fixing rod is pushed to move outwards by the second pushing surface. The auxiliary plate is matched with the second pushing surface, and the auxiliary plate is pushed to move outwards by the second pushing surface.

When first pneumatic cylinder moves down, can drive the lifter plate and move down, under the fixed spring effect, make the dead lever insert the through opening of bracing piece, fix the bracing piece, make the intercommunicating pore get into the protective tube completely. When the first hydraulic cylinder moves upwards, the lifting plate is driven to move upwards, the auxiliary plate is pushed outwards through the second pushing surface, and after the communicating hole moves out of the protective pipe, the communicating hole is pushed through the second pushing surface, so that the fixing rod moves outwards. With fixing device and the linkage of first pneumatic cylinder, can fix and release the bracing piece at the flexible in-process of first pneumatic cylinder is automatic, realize supporting seat lift and fixing device's synchronization, and the energy saving.

Furthermore, the plurality of mobile devices comprise a plurality of first one-way valves and a plurality of second one-way valves; the first one-way valve is arranged in a communication port between the damping cylinder and the inner cavity of the transformer body; the second one-way valve is arranged in a communication port of the shock absorption cylinder and the inner cavity of the transformer body, the one-way communication direction of the second one-way valve is opposite to that of the first one-way valve, and the second one-way valve and the first one-way valve belong to different moving devices respectively; the protection device comprises a second hydraulic cylinder, the second hydraulic cylinder is vertically arranged in the installation cavity and fixed with the first connecting rods, and the telescopic end of the second hydraulic cylinder is fixed with the piston head downwards.

When the transformer body is fixed with the base, the second hydraulic cylinder is controlled to stretch back and forth and is matched with the first one-way valve and the second one-way valve, so that oil is circulated in the annular oil cavity in a unidirectional mode, and the heat dissipation effect is improved. When the internal pressure of the formed annular oil cavity is increased, the damping cylinder and the supporting rod can slide, the transformer body is prevented from being broken due to the pressure generated by the fact that the second hydraulic cylinder extends to extrude oil, and the transformer body and the formed annular oil cavity are protected.

Further, the second hydraulic cylinder is connected with the control system. The temperature sensor is arranged in the transformer body and is in wireless connection with the control system. The protection device comprises a water accumulation inductor, and the water accumulation inductor comprises a floating ball, a pulling switch and a connecting rope. The pull switch is arranged on the upper portion of the base and connected with the control system. The floating ball is connected with the pulling switch through a connecting rope.

When the transformer body is fixed with the base and the temperature in the transformer body reaches a threshold value, the second hydraulic cylinder is controlled to stretch and retract in a reciprocating mode, so that oil is circulated in the annular oil cavity in a unidirectional mode, and the heat dissipation effect is improved. When the accumulated water is too deep, the second hydraulic cylinder is controlled to extend, so that the internal pressure of the formed annular oil cavity is increased, the damping cylinder and the supporting rod slide, the transformer body is lifted, and the accumulated water is prevented from entering the transformer body.

Furthermore, the top surface of the supporting seat is a concave cambered surface. The upper port of the oil through pipe is higher than the lowest position of the top surface of the supporting seat and inclines to one side far away from the moving wheel. The protection device comprises a plurality of electric clamps which are respectively clamped on the oil through pipes, and the electric clamps are connected with the control system.

When the first hydraulic cylinder contracts, the piston head is driven to descend, the oil pressure in the oil through pipe is improved, the electric clamp is started after a certain time is delayed, polluted oil liquid on the upper portion of the oil through pipe is sprayed out of the protection pipe, and the pollution caused by the oil liquid entering the transformer is avoided.

A method of operating a power transformer, comprising: a1: when raining, the floating ball rises under the action of accumulated water, and when the depth of the accumulated water reaches a limit value, the floating ball triggers the pulling switch through the connecting rope. A2: the control system controls the second hydraulic cylinder to extend to drive the piston head to move downwards, so that oil in the oil storage tank sequentially passes through the oil through pipe, the protective pipe, the communication hole and the communication channel and enters the damping cylinder, and part of the oil sequentially passes through the first one-way valve, the interior of the transformer body and the first one-way valve and enters other damping cylinders, so that the supporting rod and the damping cylinder slide to enable the transformer body to ascend.

Through second pneumatic cylinder, damper cylinder, cyclic annular oil pocket, floater, pulling switch, connection rope, mutually support, can be when ponding is too dark, with transformer body lifting, protect the transformer body.

Furthermore, when the staff controlled a plurality of first pneumatic cylinders to contract, when making the supporting seat descend, postponed 1 second and opened electronic clamp, with the inside fluid of oil siphunculus upper end to the guard tube outer slope blowout.

Delaying for 1 second, opening the electric clamp to increase the pressure inside the oil through pipe and spray the polluted oil liquid to the outside of the protection pipe.

The invention has the beneficial effects that:

1. through automatic to protective tube injection fluid and recovery fluid, can maintain the removal wheel automatically, the life of extension removal wheel.

2. The transformer body, the damping cylinder, the protective cylinder, the oil through pipe and the oil storage tank form an annular oil cavity, and the heat dissipation effect on the transformer body can be improved.

3. The upper portion of damper cylinder and the inside fluid intercommunication of transformer body can carry out the adaptability expansion to the pressure of transformer body inside, prevent that the transformer from generating heat the inside pressure that leads to too big, make the transformer body break.

Drawings

FIG. 1 is a schematic diagram of the internal structure of the present power transformer;

FIG. 2 is a schematic view of the present power transformer fixture;

fig. 3 is a schematic cross-sectional view of the damper cylinder of the present power transformer.

Description of the reference numerals:

1. a base; 2. a first hydraulic cylinder; 21. a supporting base; 22. a protective tube; 23. a lifting plate; 24. an auxiliary plate; 25. fixing the rod; 251. a communicating hole; 26. a fixed spring; 3. an oil storage tank; 31. a piston head; 32. a second hydraulic cylinder; 33. an oil through pipe; 34. a first connecting rod; 4. a support bar; 41. a moving wheel; 42. a rubber plug; 43. a support ring; 44. a limiting sheet; 45. an auxiliary spring; 46. a return spring; 47. a slide bar; 48. a filter; 5. a damper cylinder; 51. sealing the sheet; 52. a damping spring; 53. an energy dissipation sheet; 54. a first check valve; 6. a transformer body; 7. pulling a switch; 71. connecting ropes; 72. a floating ball.

Detailed Description

The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention.

As shown in fig. 1, a power transformer includes a base 1, a transformer body 6, four moving devices, a protection device, four lifting devices, four fixing devices, and a control system. The base 1 is internally provided with an installation cavity. Four elevating gear correspond with four mobile device, set up inside the installation cavity, and elevating gear includes first pneumatic cylinder 2, supporting seat 21, protective tube 22. The protective tube 22 is vertically arranged in the installation cavity, and the upper end of the protective tube upwards penetrates through the base 1 and extends to the top surface of the base 1. The supporting seat 21 is disposed inside the protection tube 22, and a sealing layer is disposed on a side surface of the supporting seat and is tightly attached to an inner side surface of the protection tube 22. Inside first pneumatic cylinder 2 is vertical to be fixed in the installation cavity, be in under supporting seat 21, the flexible end and the supporting seat 21 of first pneumatic cylinder 2 are fixed. The guard includes four oil through pipes 33, the oil storage tank 3, the piston head 31, and four first connecting rods 34. The oil storage tank 3 is arranged in the mounting cavity, an opening is formed in the upper portion of the oil storage tank, and the cross-sectional area of the oil storage tank 3 is smaller than the sum of the cross-sectional areas of the four protection pipes 22. The piston head 31 is disposed in the oil storage tank 3, and the side surface of the piston head 31 is tightly attached to the inner side surface of the oil storage tank 3, and the piston head 31 is connected to the telescopic ends of the four first hydraulic cylinders 2 through four first connecting rods 34. Oil siphunculus 33 is the hose, and four oil siphunculus 33 are corresponding with four supporting seat 21, and the lower extreme of oil siphunculus 33 and the bottom intercommunication of oil storage tank 3, the upper end upwards run through corresponding supporting seat 21 and extend to supporting seat 21 top surface department, are provided with first filter screen in the last port of oil siphunculus 33. The transformer body 6 is above the base 1. The moving device comprises a moving wheel 41 and a supporting rod 4. The support rod 4 is vertically arranged below the transformer body 6, and the upper part of the support rod is connected with the transformer body 6. The moving wheel 41 is disposed at the lower part of the support rod 4, is located in the protection tube 22, and is soaked in the oil liquid. Four fixing devices correspond to the four protection tubes 22 for fixing the support rod 4. The control system is connected with the protection device, the four lifting devices and the four fixing devices.

When transformer body 6 is required to be installed on base 1, the worker firstly pushes transformer body 6 to base 1, so that moving wheel 41 falls on supporting seat 21, supporting seat 21 descends through first hydraulic cylinder 2, supporting seat 21 drives transformer body 6 to descend, and moving wheel 41 enters protective tube 22. Meanwhile, the first hydraulic cylinder 2 drives the piston head 31 to descend, oil in the oil storage tank 3 is pressed into the protective pipe 22 through the oil through pipe 33, the movable wheel 41 is immersed, and the movable wheel 41 is prevented from rusting and being damaged. Finally, the support rod 4 is fixed by the fixing device. When the transformer body 6 and the base 1 need to be detached, the fixing device is controlled to release the support rod 4, then the support base 21 is lifted through the first hydraulic cylinder 2, the transformer body 6 is lifted, and the movable wheel 41 is lifted out of the protective pipe 22. Meanwhile, the first hydraulic cylinder 2 drives the piston head 31 to ascend, oil in the protective pipe 22 is sucked into the oil storage tank 3 through the oil through pipe 33, and the oil is recovered. After that, the worker moves the transformer body 6 to a desired position by moving the wheels 41. When the transformer body 6 is not installed on the base 1, the supporting seat 21 is connected with the top surface of the base 1, so that rainwater and dust can be prevented from entering the protective pipe 22.

As shown in fig. 3, the moving device includes a damper spring 52, a damper cylinder 5, a sealing plate 51, and a dissipative plate 53. The transformer body 6 is oil-immersed. The damper cylinder 5 is vertically fixed on the lower portion of the transformer body 6, and the upper portion of the damper cylinder 5 is communicated with the oil inside the transformer body 6. The bracing piece 4 sets up in damper cylinder 5 below, and inside its upper portion run through damper cylinder 5 and extend to damper cylinder 5, the vertical a plurality of first slides that are provided with in the side of bracing piece 4, is provided with first slider in the first slide, and first slider is fixed with damper cylinder 5. The sealing sheet 51 is arranged in the damper cylinder 5, closely connected with the inner side surface of the damper cylinder 5 and fixed with the upper part of the support rod 4. The energy dissipation sheet 53 is fixed inside the damper cylinder 5 and above the sealing sheet 51, and a plurality of energy dissipation holes which are communicated up and down are formed in the energy dissipation sheet 53. The damping spring 52 is vertically arranged in the damping cylinder 5 and is positioned between the sealing sheet 51 and the energy dissipation sheet 53, the lower part of the damping spring is connected with the sealing sheet 51, the upper part of the damping spring is connected with the energy dissipation sheet 53, and the damping spring 52 is in a compressed state.

When the transformer body 6 is fixed on the base 1, if the transformer body 6 vibrates, the supporting rod 4 can be driven to slide in the damping cylinder 5, so that the damping spring 52 extends and retracts in a reciprocating manner, and the damping effect on the transformer body 6 is realized. Meanwhile, the supporting rod 4 drives the sealing sheet 51 to move in the damping cylinder 5 in a reciprocating mode, oil is sucked and discharged in a reciprocating mode, the oil inside the transformer body 6 is stirred, and the heat dissipation effect of the transformer body 6 is improved. When the transformer body 6 moves, the movement of the transformer body 6 is more stabilized by the damper springs 52. The energy dissipation piece 53 is arranged, so that kinetic energy of oil can be converted into heat, and the shock absorption effect of the mobile device is improved. When the interior of the transformer body generates heat seriously, the pressure rises, the sealing sheet 51 enables the damping cylinder 5 and the supporting rod 4 to slide, the damping spring 52 extends, and the transformer body 6 is protected. The upper portion of damper cylinder 5 and the inside fluid intercommunication of transformer body 6 can improve the shock attenuation effect through fluid.

As shown in fig. 2, the oil in the oil tank 3 is the same as the oil in the transformer body 6. The moving device comprises a rubber plug 42 and a supporting ring 43. The support ring 43 is sleeved on the corresponding support rod 4, is tightly attached to the top surface of the base 1, covers the upper port of the protection tube 22, is connected with the support rod 4, and is provided with a rubber layer on the bottom surface of the support ring 43. The rubber stopper 42 is sleeved on the support rod 4, fixed with the bottom of the support ring 43, and located in the protection tube 22 to be adapted to the inner wall of the protection tube 22. A sliding rod 47 is arranged in the support rod 4 in a sliding mode, the sliding rod 47 is vertically arranged, the upper end of the sliding rod 47 penetrates through the sealing piece 51 and extends into the shock absorption cylinder 5, the lower portion of the sliding rod 47 is connected with a return spring 46, the return spring 46 is in a stretching state, a communication channel is vertically arranged in the sliding rod 47, the communication channel is upwards communicated with the side portion of the upper end of the sliding rod 47, the upper end opening of the communication channel is located above the sealing piece 51 and matched with the sliding distance of the sliding rod 47, and a filter 48 is arranged in the communication channel. The fixing device comprises a fixing rod 25, a driving device and a fixing groove. The fixing groove is formed on the inner side wall of the protection pipe 22. One end of the fixed rod 25 transversely penetrates through the support rod 4, the sliding rod 47 and the communicating channel and extends into the fixed groove, the other end of the fixed rod penetrates through the protective tube 22 and extends to the outer side of the protective tube 22 and is connected with the driving device, the communicating hole 251 is formed in the fixed rod 25, the communicating channel is communicated with the interior of the protective tube 22 through the communicating hole 251, a first pushing surface is arranged at one end, away from the driving device, of the fixed rod 25, and the first pushing surface is an inclined surface facing to the obliquely upper side and is matched with the sliding rod 47. The fixing rods 25 of the four fixing devices are arranged in such a way that the axial directions thereof are mutually crossed. The upper port of the communicating passage is matched with the sliding distance of the sliding rod 47, and when the sliding rod 47 slides downwards, the upper port of the communicating passage can be closed. The first pushing surface is an inclined surface facing obliquely upward, and is matched with the sliding rod 47 to push the fixing rod 25 to penetrate through the sliding rod 47 through the first pushing surface. The axis directions of the fixing rods 25 of the four fixing devices are arranged in a mutually crossed manner, so that the fixing effect of the fixing devices on the supporting rod 4 can be improved.

When the transformer body 6 descends along with the supporting seat 21, the rubber plug 42 and the supporting ring 43 are driven to descend simultaneously, the protection tube 22 is sealed through the rubber plug 42, and the transformer body 6 is supported through the supporting ring 43. When the fixing device is required to fix the support rod 4, the fixing rod 25 is moved inward by the driving device, inserted into the through hole of the slide rod 47, and the slide rod 47 is slid upward by the first pushing surface, so that the oil inside the damper cylinder 5 is communicated with the oil inside the protection tube 22. The inside of the transformer body 6, the damper cylinder 5, the protective cylinder, the oil through pipe 33, and the oil storage tank 3 are formed into an annular oil cavity, and the transformer body 6 is cooled by the oil storage tank 3. The protection tube 22 is sealed by the rubber stopper 42, so that oil is prevented from overflowing from the protection tube 22, and water can be prevented. When the transformer body 6 is detached from the base 1, the return spring 46 causes the sliding rod 47 to slide downward, so as to seal the damper cylinder 5 and prevent the oil inside the damper cylinder 5 from flowing out. A filter 48 is provided in the communicating passage for preventing foreign substances from entering the oil inside the transformer body 6. The filter 48 is prior art.

The moving device comprises an auxiliary spring 45, a limiting sheet 44 and a plurality of second sliding blocks. The limiting sheet 44 is sleeved on the supporting rod 4, fixed with the supporting rod 4, located above the supporting ring 43, and connected with the supporting ring 43. The auxiliary spring 45 is sleeved on the support rod 4 and located above the support ring 43, the upper end of the auxiliary spring is connected with the support rod 4, the lower end of the auxiliary spring is connected with the support ring 43, and the auxiliary spring 45 is in a compressed state. The rubber stopper 42 and the supporting ring 43 are respectively connected with the supporting rod 4 in a sliding way. The second slider is arranged in the first slideway and fixed with the supporting ring 43, and when the supporting ring 43 slides to the lowest part, the rubber plug 42 seals the penetrating opening of the fixing rod 25 to the supporting rod 4.

When the transformer body 6 is detached from the base 1, the auxiliary spring 45 extends to slide the rubber plug 42 and the support ring 43 downward on the support rod 4, so as to seal the through hole of the support rod 4 by the fixing rod 25, thereby preventing the sliding rod 47 from moving upward under the air pressure difference between the external air pressure and the internal air pressure of the damper cylinder 5 when the damping device works, and thus, oil in the damper cylinder 5 leaks out. A stopper piece 44 is provided for stopping the support ring 43. The first slideway is used as the slideway of the support rod 4 and the support ring 43 and as the lowest point limit of the support ring 43.

The driving device comprises a plurality of fixed springs 26, a lifting plate 23 and an auxiliary plate 24. The communication hole 251 is a waist-shaped hole which is communicated up and down, the transverse length of the communication hole is larger than the diameter of the support rod 4, and is smaller than the thickness of the side wall of the protection pipe 22. The lifting plate 23 is vertically arranged on the side of the protective pipe 22, the lower part of the lifting plate is fixed with the telescopic end of the first hydraulic cylinder 2, and the upper part of the lifting plate is provided with a second pushing surface which is an inclined surface and matched with the communication hole 251. The auxiliary plate 24 is vertically disposed outside the protection tube 22, fixed to one end of the fixing rod 25, and engaged with the second pushing surface. The fixing springs 26 are transversely disposed between the auxiliary plate 24 and the protection tube 22, and both ends of the fixing springs 26 are connected to the auxiliary plate 24 and the protection tube 22, respectively, and the fixing springs 26 are in a stretched state. The second pushing surface is an inclined surface, and is engaged with the communicating hole 251 to push the fixing rod 25 to move outward by the second pushing surface. The auxiliary plate 24 is engaged with the second pushing surface, and the auxiliary plate 24 is pushed by the second pushing surface to move outward.

When the first hydraulic cylinder 2 moves downwards, the lifting plate 23 is driven to move downwards, and the fixing rod 25 is inserted into the through hole of the supporting rod 4 under the action of the fixing spring 26, so that the supporting rod 4 is fixed, and the communication hole 251 completely enters the protection pipe 22. When the first hydraulic cylinder 2 moves upward, the lifting plate 23 is driven to move upward, the auxiliary plate 24 is pushed outward by the second pushing surface, and after the communication hole 251 moves out of the protection tube 22, the communication hole 251 is pushed by the second pushing surface, so that the fixing rod 25 moves outward.

The four moving means include two first check valves 54 and two second check valves; the first one-way valve 54 is arranged in a communication port between the damper cylinder 5 and the inner cavity of the transformer body 6; the second one-way valve is arranged in a communication port of the vibration damping cylinder 5 and the inner cavity of the transformer body 6, the one-way communication direction of the second one-way valve is opposite to that of the first one-way valve 54, and the second one-way valve and the first one-way valve 54 belong to different moving devices respectively. The protection device comprises a second hydraulic cylinder 32, wherein the second hydraulic cylinder 32 is vertically arranged in the installation cavity and fixed with four first connecting rods 34, and the telescopic end of the second hydraulic cylinder is fixed with the piston head 31 downwards.

When the transformer body 6 is fixed with the base 1, the second hydraulic cylinder 32 is controlled to stretch back and forth and is matched with the first one-way valve 54 and the second one-way valve, so that oil is circulated in a single direction in the formed annular oil cavity, and the heat dissipation effect is improved. When the internal pressure of the formed annular oil cavity is increased, the damper cylinder 5 and the support rod 4 can slide, the transformer body 6 is prevented from being broken due to the pressure generated by the second hydraulic cylinder 32 extending and squeezing the oil, and the transformer body 6 and the formed annular oil cavity are protected.

The second hydraulic cylinder 32 is connected to the control system. A temperature sensor is arranged inside the transformer body 6 and is in wireless connection with the control system. The protection device comprises a water accumulation sensor, and the water accumulation sensor comprises a floating ball 72, a pulling switch 7 and a connecting rope 71. The pull switch 7 is arranged on the upper part of the base 1, and the pull switch 7 is connected with the control system. The float ball 72 is connected to the pull switch 7 through the connecting cord 71.

When the transformer body 6 is fixed with the base 1 and the temperature inside the transformer body 6 reaches a threshold value, the second hydraulic cylinder 32 is controlled to extend and retract back and forth, so that oil circulates in a single direction in the formed annular oil cavity, and the heat dissipation effect is improved. When the accumulated water is too deep, the second hydraulic cylinder 32 is controlled to extend, so that the internal pressure of the formed annular oil cavity is increased, the damping cylinder 5 and the supporting rod 4 slide, the transformer body 6 is lifted, and the accumulated water is prevented from entering the transformer body 6.

The top surface of the support seat 21 is a concave arc surface. The upper port of the oil through pipe 33 is higher than the lowest position of the top surface of the support base 21 and inclines to the side far away from the moving wheel 41. The protection device comprises four electric clamps which are respectively clamped on the four oil through pipes 33 and connected with the control system.

When the first hydraulic cylinder 2 contracts, the piston head 31 is driven to descend, the oil pressure in the oil through pipe 33 is improved, the electric clamp is started after a certain time delay, and polluted oil on the upper portion of the oil through pipe 33 is sprayed out of the protection pipe 22, so that the pollution caused by the oil entering the transformer is avoided.

A method of operating a power transformer, comprising: a1: when raining, the floating ball 72 rises under the action of accumulated water, and when the depth of the accumulated water reaches a limit value, the floating ball 72 triggers the pull switch 7 through the connecting rope 71. A2: the control system controls the second hydraulic cylinder 32 to extend to drive the piston head 31 to move downwards, so that oil in the oil storage tank 3 sequentially passes through the oil through pipe 33, the protective pipe 22, the communication hole 251 and the communication channel and enters the damping cylinder 5, and a part of oil sequentially passes through the first one-way valve 54, the interior of the transformer body 6 and the first one-way valve 54 and enters other damping cylinders 5, so that the support rod 4 and the damping cylinder 5 slide to enable the transformer body 6 to ascend.

Through second pneumatic cylinder 32, damper cylinder 5, annular oil pocket, floater 72, pulling switch 7, connection rope 71, mutually support, can be when ponding is too dark, with transformer body 6 lifting, protect transformer body 6.

When the staff controls the four first hydraulic cylinders 2 to contract, so that the supporting seat 21 descends, the electric clamp is started after 1 second delay, and oil in the upper end of the oil through pipe 33 is obliquely sprayed out of the protective pipe 22.

Delaying for 1 second, opening the electric clamp to increase the pressure inside the oil through pipe 33, and spraying the polluted oil out of the protection pipe 22.

The above-mentioned embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts based on the embodiments of the present invention are within the protection scope of the present invention.

Claims

1. An electrical transformer, comprising: the transformer comprises a base (1), a transformer body (6), a plurality of moving devices, a protective device, a plurality of lifting devices, a plurality of fixing devices and a control system; an installation cavity is arranged in the base (1); the lifting devices correspond to the moving devices and are arranged in the installation cavity, and each lifting device comprises a first hydraulic cylinder (2), a supporting seat (21) and a protective pipe (22); the protective pipe (22) is vertically arranged in the installation cavity, and the upper end of the protective pipe upwards penetrates through the base (1) and extends to the top surface of the base (1); the supporting seat (21) is arranged inside the protective pipe (22), a sealing layer is arranged on the side face of the supporting seat, and the sealing layer is tightly attached to the inner side face of the protective pipe (22); the first hydraulic cylinder (2) is vertically fixed in the mounting cavity and is positioned under the supporting seat (21), and the telescopic end of the first hydraulic cylinder (2) is fixed with the supporting seat (21); the protective device comprises a plurality of oil through pipes (33), an oil storage tank (3), a piston head (31) and a plurality of first connecting rods (34); the oil storage tank (3) is arranged in the mounting cavity, an opening is formed in the upper part of the oil storage tank, and the cross sectional area of the oil storage tank (3) is smaller than the sum of the cross sectional areas of the plurality of protective pipes (22); the piston head (31) is arranged in the oil storage tank (3), the side face of the piston head is tightly attached to the inner side face of the oil storage tank (3), and the piston head (31) is connected with the telescopic ends of the first hydraulic cylinders (2) through a plurality of first connecting rods (34); the oil through pipe (33) is a hose, the oil through pipes (33) correspond to the supporting seats (21), the lower end of each oil through pipe (33) is communicated with the bottom of the oil storage tank (3), the upper end of each oil through pipe upwards penetrates through the corresponding supporting seat (21) and extends to the top surface of the corresponding supporting seat (21), and a first filter screen is arranged in the upper port of each oil through pipe (33); the transformer body (6) is positioned above the base (1); the moving device comprises a moving wheel (41) and a supporting rod (4); the supporting rod (4) is vertically arranged below the transformer body (6), and the upper part of the supporting rod is connected with the transformer body (6); the movable wheel (41) is arranged at the lower part of the supporting rod (4), is positioned in the protective pipe (22) and is soaked in oil liquid; the fixing devices correspond to the protecting pipes (22) and are used for fixing the supporting rod (4); the control system is connected with the protection device, the plurality of lifting devices and the plurality of fixing devices.

2. A power transformer according to claim 1, characterised in that: the moving device comprises a damping spring (52), a damping cylinder (5), a sealing sheet (51) and an energy consumption sheet (53); the transformer body (6) is oil-immersed; the damping cylinder (5) is vertically fixed at the lower part of the transformer body (6), and the upper part of the damping cylinder (5) is communicated with the internal oil of the transformer body (6); the supporting rod (4) is arranged below the shock-absorbing cylinder (5), the upper part of the supporting rod penetrates through the shock-absorbing cylinder (5) and extends into the shock-absorbing cylinder (5), a plurality of first slide ways are vertically arranged on the side surface of the supporting rod (4), first slide blocks are arranged in the first slide ways, and the first slide blocks are fixed with the shock-absorbing cylinder (5); the sealing piece (51) is arranged in the shock absorption cylinder (5), is tightly connected with the inner side surface of the shock absorption cylinder (5), and is fixed with the upper part of the support rod (4); the energy dissipation sheet (53) is fixed inside the shock absorption cylinder (5) and is positioned above the sealing sheet (51), and a plurality of energy dissipation holes which are communicated up and down are formed in the energy dissipation sheet (53); damping spring (52) vertical set up in damper cylinder (5), be in between gasket (51) and power consumption piece (53), its lower part with gasket (51) are connected, upper portion with power consumption piece (53) are connected, damping spring (52) are compression state.

3. A power transformer according to claim 2, characterised in that: the oil in the oil storage tank (3) is the same as the oil in the transformer body (6); the moving device comprises a rubber plug (42) and a supporting ring (43); the supporting rings (43) are sleeved on the corresponding supporting rods (4), are tightly attached to the top surface of the base (1), cover the upper end openings of the protective tubes (22), are connected with the supporting rods (4), and are provided with rubber layers on the bottom surfaces of the supporting rings (43); the rubber plug (42) is sleeved on the supporting rod (4), is fixed with the bottom of the supporting ring (43), is positioned in the protecting pipe (22) and is adapted to the inner wall of the protecting pipe (22); a sliding rod (47) is arranged in the supporting rod (4) in a sliding mode, the sliding rod (47) is vertically arranged, the upper end of the sliding rod penetrates through the sealing sheet (51) and extends into the shock absorption cylinder (5), the lower portion of the sliding rod (47) is connected with a return spring (46), the return spring (46) is in a stretching state, a communicating channel is vertically arranged in the sliding rod (47), the communicating channel is upwards communicated with the side portion of the upper end of the sliding rod (47), the upper end opening of the communicating channel is located above the sealing sheet (51) and matched with the sliding distance of the sliding rod (47), and a filter (48) is arranged in the communicating channel; the fixing device comprises a fixing rod (25), a driving device and a fixing groove; the fixing grooves are arranged on the inner side wall of the protection pipe (22); one end of the fixed rod (25) transversely penetrates through the supporting rod (4), the sliding rod (47) and the communication channel and extends into the fixed groove, the other end of the fixed rod penetrates through the protective pipe (22) and extends to the outer side of the protective pipe (22), and is connected with the driving device, a communication hole (251) is formed in the fixed rod (25), the communication channel is communicated with the interior of the protective pipe (22) through the communication hole (251), a first pushing surface is arranged at one end, away from the driving device, of the fixed rod (25), and the first pushing surface is an inclined surface facing obliquely upwards and is matched with the sliding rod (47); the axial directions of the fixed rods (25) of the plurality of fixing devices are mutually crossed.

4. A power transformer according to claim 3, characterised in that: the moving device comprises an auxiliary spring (45), a limiting sheet (44) and a plurality of second sliding blocks; the limiting piece (44) is sleeved on the supporting rod (4), is fixed with the supporting rod (4), is positioned above the supporting ring (43), and is connected with the supporting ring (43); the auxiliary spring (45) is sleeved on the supporting rod (4) and is positioned above the supporting ring (43), the upper end of the auxiliary spring is connected with the supporting rod (4), the lower end of the auxiliary spring is connected with the supporting ring (43), and the auxiliary spring (45) is in a compressed state; the rubber plug (42) and the support ring (43) are respectively in sliding connection with the support rod (4); the second slider set up in the first slide, with support ring (43) are fixed, work as support ring (43) slide to when the below, rubber buffer (42) will dead lever (25) are right the mouth that runs through of bracing piece (4) is sealed.

5. A power transformer according to claim 3, characterised in that: the driving device comprises a plurality of fixed springs (26), a lifting plate (23) and an auxiliary plate (24); the communicating holes (251) are waist-shaped holes which are communicated up and down, the transverse length of the communicating holes is greater than the diameter of the supporting rod (4) and less than the thickness of the side wall of the protective pipe (22); the lifting plate (23) is vertically arranged on the side of the protective pipe (22), the lower part of the lifting plate is fixed with the telescopic end of the first hydraulic cylinder (2), the upper part of the lifting plate is provided with a second pushing surface, and the second pushing surface is an inclined surface and matched with the communicating hole (251); the auxiliary plate (24) is vertically arranged on the outer side of the protective pipe (22), is fixed with one end of the fixing rod (25), and is matched with the second pushing surface; the fixing springs (26) are transversely arranged between the auxiliary plate (24) and the protective tube (22), two ends of the fixing springs (26) are respectively connected with the auxiliary plate (24) and the protective tube (22), and the fixing springs (26) are in a stretching state.

6. A power transformer according to claim 3, characterised in that: the plurality of moving devices comprise a plurality of first one-way valves (54) and a plurality of second one-way valves; the first one-way valve (54) is arranged in a communication port of the shock absorption cylinder (5) and the inner cavity of the transformer body (6); the second one-way valve is arranged in a communication port of the shock absorption cylinder (5) and the inner cavity of the transformer body (6), the direction of the second one-way valve is opposite to that of the first one-way valve (54), and the second one-way valve and the first one-way valve (54) belong to different moving devices respectively; the protection device comprises a second hydraulic cylinder (32), wherein the second hydraulic cylinder (32) is vertically arranged in the installation cavity and fixed with the first connecting rods (34), and the telescopic end of the second hydraulic cylinder is downwards fixed with the piston head (31).

7. A power transformer according to claim 6, characterised in that: the second hydraulic cylinder (32) is connected with the control system; a temperature sensor is arranged in the transformer body (6) and is in wireless connection with the control system; the protection device comprises a water accumulation sensor, and the water accumulation sensor comprises a floating ball (72), a pulling switch (7) and a connecting rope (71); the pull switch (7) is arranged on the upper part of the base (1), and the pull switch (7) is connected with the control system; the floating ball (72) is connected with the pull switch (7) through the connecting rope (71).

8. A power transformer according to claim 1, characterised in that: the top surface of the supporting seat (21) is a concave cambered surface; the upper port of the oil through pipe (33) is higher than the lowest position of the top surface of the support seat (21) and inclines to one side far away from the moving wheel (41); the protection device comprises a plurality of electric clamps which are respectively clamped on the oil through pipe (33), and the electric clamps are connected with the control system.