CN112366067A

CN112366067A - Oil-immersed transformer

Info

Publication number: CN112366067A
Application number: CN202011115553.3A
Authority: CN
Inventors: 吕键
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-02-12

Abstract

The invention discloses an oil-immersed transformer which comprises a shell, wherein a connecting frame is fixedly connected to the outer wall of the shell, a memory alloy spring which is in contact with the outer wall of the shell is arranged in the connecting frame, one end of the memory alloy spring is fixedly connected with the inner wall of the connecting frame, the other end of the memory alloy spring is fixedly connected with a sliding plate, one end, far away from the memory alloy spring, of the sliding plate is fixedly connected with a moving plate, the front side wall of the shell is fixedly connected with a guide block, a U-shaped rod is inserted in the guide block, and one end of the U-shaped rod is fixedly connected with a ball. When the temperature of the shell of the transformer is too high, the cleaning of dust deposited on the radiating fins is realized through the up-and-down movement of the scraper, the influence of dust accumulation on the radiating effect of the radiating fins is avoided, the centralized cleaning of the dust deposition is realized, the environment pollution is avoided, the oil is extracted through the suction type movement in the cavity, the expansion and oil leakage of the oil caused by too high temperature are avoided, and the transformer can be normally used.

Description

Oil-immersed transformer

Technical Field

The invention relates to the technical field of transformers, in particular to an oil-immersed transformer.

Background

A transformer is a stationary electrical device that utilizes the principle of electromagnetic induction to convert ac power at one voltage level to ac power at another voltage level. An oil-immersed transformer is a common transformer at present, is a novel high-performance transformer with more reasonable structure and better performance, and takes oil as a main insulation means of the transformer and depends on the oil as a cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling and forced oil circulation.

Be provided with the fin on the outer wall of transformer, nevertheless can pile up the dust on the fin after long-time the use, influence the heat dissipation of fin, and then influence the heat dissipation of transformer self, and when transformer high temperature, inside fluid can expand to take place the problem of oil leak, and then influence the normal use of transformer.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides an oil-immersed transformer.

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

an oil-immersed transformer comprises a shell, wherein a connecting frame is fixedly connected to the outer wall of the shell, a memory alloy spring which is contacted with the outer wall of the shell is arranged in the connecting frame, one end of the memory alloy spring is fixedly connected with the inner wall of the connecting frame, the other end of the memory alloy spring is fixedly connected with a sliding plate, one end of the sliding plate, which is far away from the memory alloy spring, is fixedly connected with a movable plate, the front side wall of the shell is fixedly connected with a guide block, a U-shaped rod is inserted in the guide block, one end of the U-shaped rod is fixedly connected with a round ball, the upper side wall of the movable plate is provided with an inclined plane, the round ball is contacted with the inclined plane, a radiating fin is fixedly connected to the outer wall of the shell, the other end of the U-shaped rod is fixedly connected with a scraping plate which, the collecting box is characterized in that the end part of the collecting box extends to the outside of the collecting tank, a baffle plate located on the upper side of the end part of the collecting box is connected to the outer wall of the shell in a rotating mode through a torque rotating shaft, a guide plate is connected to the right side wall of the scraping plate in a rotating mode, a trapezoidal block located on the upper side of the baffle plate is fixedly connected to the outer wall of the radiating fin, a guide groove is formed in the guide plate, and an extracting mechanism is arranged inside the shell.

Preferably, the diversion trench is composed of an upper inclined trench and a lower vertical trench.

Preferably, the extraction mechanism is including being located the inside cavity of casing, the slip is provided with the piston in the cavity, the last lateral wall fixedly connected with of piston runs through and extends to the outside connecting rod of casing, the upper end of connecting rod and the interior roof fixed connection of U type pole, fixedly connected with connecting block on the outer wall of casing, it is equipped with the carriage release lever to insert on the connecting block, set up on the outer wall of connecting rod with carriage release lever tip size assorted bayonet socket, the one end fixedly connected with magnet board of bayonet socket is kept away from to the carriage release lever, the connecting block is close to one side fixed the inlaying of magnet board and is equipped with the electro-magnet, be equipped with the trigger mechanism who is connected with the electro-magnet in the link frame, fixedly connected with expanding spring.

Preferably, the trigger mechanism comprises a switch fixedly installed in the connecting frame, the end of the switch is arranged in an arc shape, and the outer wall of the sliding plate is in contact with the end of the switch.

Compared with the prior art, this oil-immersed transformer's advantage lies in:

1. the temperature of the shell rises, the memory alloy spring expands to extrude the sliding plate and the movable plate to move outwards under the action of the temperature, the ball and the U-shaped rod are jacked up through the contact of the ball and the inclined surface, the end part of the U-shaped rod drives the scraper to move on the outer wall of the radiating fin, dust adhered to the radiating fin is scraped, the radiating effect of the radiating fin is ensured, the influence of dust accumulation on the radiating fin is avoided, and the temperature of the shell rises;

2. the guide plate, the trapezoid block, the collecting box and the baffle are arranged, the scraper drives the guide plate to move upwards, the upper end of the guide plate is in contact with the trapezoid block and rotates towards the outer side along the inclined plane of the trapezoid block, accumulated dust on the scraper slides downwards into the guide groove at the moment, the lower end of the guide plate rotates towards the inner side to extrude the baffle to rotate towards the inner side, the guide groove is located at the upper side of the collecting box, and the accumulated dust in the guide groove slides downwards and falls out of the collecting box to be collected, so that the accumulated dust is cleaned;

3. when the temperature of the shell is too high, the electromagnet is electrified to generate magnetism to push the movable rod to move so as to separate the movable rod from the bayonet, the connecting rod and the piston can be driven to move upwards by the upwards movement of the U-shaped rod, a suction type motion is formed in the cavity, part of oil is pumped into the cavity, and the problem of oil leakage caused by too much expansion of the oil is avoided;

in conclusion, when the temperature of the shell of the transformer is too high, the cleaning of the dust deposited on the radiating fins is realized through the up-and-down movement of the scraper, the influence of dust accumulation on the radiating effect of the radiating fins is avoided, the centralized cleaning of the dust deposited is realized, the environmental pollution is avoided, the oil is extracted through the suction type movement in the cavity, the oil expansion and oil leakage caused by the too high temperature are avoided, and the transformer can be normally used.

Drawings

Fig. 1 is a schematic structural diagram of an oil-immersed transformer according to the present invention;

fig. 2 is a schematic structural diagram of a working state of a deflector in an oil-immersed transformer according to the present invention;

fig. 3 is a rear view of an oil-immersed transformer according to the present invention;

fig. 4 is a cross-sectional view of a flow guide plate in an oil-immersed transformer according to the present invention.

In the figure: the device comprises a shell 1, a connecting frame 2, a memory alloy spring 3, a sliding plate 4, a moving plate 5, a guide block 6, a U-shaped rod 7, a connecting rod 8, a ball 9, a heat radiating fin 10, a scraping plate 11, a trapezoidal block 12, a guide plate 13, a collecting tank 14, a collecting box 15, a baffle 16, a switch 17, a cavity 18, a piston 19, a bayonet 20, a moving rod 21, a connecting block 22, a magnet plate 23, a telescopic spring 24 and a flow guide groove 25.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, an oil-immersed transformer includes a housing 1, a connection frame 2 fixedly connected to an outer wall of the housing 1, a memory alloy spring 3 disposed in the connection frame 2 and contacting the outer wall of the housing 1, the memory alloy spring 3 being wound by a shape memory alloy wire and being capable of expanding under a high temperature effect by using a memory effect of the shape memory alloy, the memory alloy spring 3 being restored after the temperature is restored, one end of the memory alloy spring 3 being fixedly connected to an inner wall of the connection frame 2, the other end of the memory alloy spring 3 being fixedly connected to a sliding plate 4, one end of the sliding plate 4 remote from the memory alloy spring 3 being fixedly connected to a moving plate 5, a guide block 6 fixedly connected to a front side wall of the housing 1, a U-shaped rod 7 inserted into the guide block 6, a round ball 9 fixedly connected to one end of the U-shaped rod 7, an inclined surface disposed on an upper side wall of the, fixedly connected with fin 10 on the outer wall of casing 1, the scraper blade 11 that contacts with fin 10 outer wall is fixedly connected with the other end of U type pole 7, when the radiating effect of fin 10 is relatively poor, the temperature of casing 1 risees, memory alloy spring 3 expandes extrusion slide 4 and moving plate 5 move towards the outside under the temperature effect, contact through ball 9 and inclined plane with ball 9 and U type pole 7 jack-up, the tip of U type pole 7 drives scraper blade 11 and removes on the outer wall of fin 10, strike off the dust of adhesion on the fin 10, guarantee the radiating effect of fin 10, after the temperature of casing 1 resumes, memory alloy spring 3 contracts and drives slide 4 and moving plate 5 and move back, U type pole 7 moves back and resets under the action of gravity.

The outer wall of the shell 1 is provided with a collecting groove 14, a collecting box 15 is inserted into the collecting groove 14, the end part of the collecting box 15 extends to the outside of the collecting groove 14, the outer wall of the shell 1 is rotatably connected with a baffle 16 positioned on the upper side of the end part of the collecting box 15 through a torque rotating shaft, the right side wall of the scraper 11 is rotatably connected with a guide plate 13, the outer wall of the radiating fin 10 is fixedly connected with a trapezoidal block 12 positioned on the upper side of the baffle 16, the inside of the guide plate 13 is provided with a guide groove 25, the guide groove 25 is composed of a chute at the upper end and a vertical groove at the lower end, the guide plate 13 is vertical until, the end part of the chute is contacted with the outer wall of the scraper 11 for plugging, dust cannot be discharged, the baffle 16 shields the end part of the collecting box 15 to avoid rainwater entering, when the scraper 11 moves to clean dust accumulated on the radiating fin 10, the scraper 11 drives the guide, at this time, the deposited ash on the scraper 11 slides downwards into the guide groove 25, the lower end of the guide plate 13 rotates inwards to extrude the baffle 16 to rotate inwards, so that the guide groove 25 is positioned on the upper side of the collecting box 15, and the deposited ash in the guide groove 25 slides downwards to fall into the collecting box 15 for collection, so that the deposited ash is cleaned.

An extracting mechanism is arranged inside the shell 1, the extracting mechanism comprises a cavity 18 positioned inside the shell 1, a piston 19 is arranged in the cavity 18 in a sliding manner, a connecting rod 8 which penetrates through and extends to the outside of the shell 1 is fixedly connected to the upper end of the connecting rod 8 and the inner top wall of the U-shaped rod 7, a connecting block 22 is fixedly connected to the outer wall of the shell 1, a moving rod 21 is inserted into the connecting block 22, a bayonet 20 matched with the end of the moving rod 21 is formed in the outer wall of the connecting rod 8, a magnet plate 23 is fixedly connected to one end, far away from the bayonet 20, of the moving rod 21, an electromagnet is fixedly embedded in one side, close to the magnet plate 23, of the connecting block 22, a trigger mechanism connected with the electromagnet is arranged in the connecting frame 2, the trigger mechanism comprises a switch 17 fixedly installed in the connecting frame 2, the end of the switch 17 is arranged in, an expansion spring 24 is fixedly connected between the magnet plate 23 and the outer wall of the housing 1, when the housing 1 is stably raised, oil in the housing 1 expands, at the moment, the sliding plate 4 moves outwards to press the switch 17, so that the electromagnet is electrified to generate magnetism the same as that of the magnet plate 23, the magnet plate 23 and the moving rod 21 are pushed to move through magnetic repulsion force, the end part of the moving rod 21 is separated from the bayonet 20, at the moment, the upward movement of the U-shaped rod 7 can drive the connecting rod 8 and the piston 19 to move upwards, a suction type motion is formed in the cavity 18, part of the oil is pumped into the cavity 18, the problem of oil leakage caused by excessive oil expansion is avoided, after the temperature of the housing 1 is recovered, the U-shaped rod 7 moves downwards, the moving rod 21 is clamped into the bayonet 20 again to avoid the connecting rod 8 from moving upwards and downwards randomly, and meanwhile, the piston 19 moves downwards to push.

Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. An oil-immersed transformer comprises a shell (1) and is characterized in that a connecting frame (2) is fixedly connected to the outer wall of the shell (1), a memory alloy spring (3) which is in contact with the outer wall of the shell (1) is arranged in the connecting frame (2), one end of the memory alloy spring (3) is fixedly connected with the inner wall of the connecting frame (2), the other end of the memory alloy spring (3) is fixedly connected with a sliding plate (4), one end, far away from the memory alloy spring (3), of the sliding plate (4) is fixedly connected with a movable plate (5), a guide block (6) is fixedly connected to the front side wall of the shell (1), a U-shaped rod (7) is inserted into the guide block (6), one end of the U-shaped rod (7) is fixedly connected with a spherical ball (9), an inclined surface is arranged on the upper side wall of the movable plate (5), and the spherical ball (9) is in, the outer wall of the shell (1) is fixedly connected with a radiating fin (10), the other end of the U-shaped rod (7) is fixedly connected with a scraper (11) which is contacted with the outer wall of the radiating fin (10), a collecting groove (14) is arranged on the outer wall of the shell (1), a collecting box (15) is inserted in the collecting groove (14), the end part of the collecting box (15) extends to the outside of the collecting groove (14), the outer wall of the shell (1) is rotationally connected with a baffle plate (16) positioned at the upper side of the end part of the collecting box (15) through a torque rotating shaft, the right side wall of the scraper (11) is rotationally connected with a guide plate (13), the outer wall of the radiating fin (10) is fixedly connected with a trapezoidal block (12) positioned on the upper side of the baffle (16), a diversion trench (25) is formed in the diversion plate (13), and an extraction mechanism is arranged in the shell (1).

2. Oil filled transformer according to claim 1, characterized in that the guiding gutter (25) consists of an upper diagonal groove and a lower vertical groove.

3. The oil-immersed transformer according to claim 1, wherein the extraction mechanism comprises a cavity (18) located inside the housing (1), a piston (19) is slidably disposed in the cavity (18), a connecting rod (8) extending through the housing (1) is fixedly connected to an upper side wall of the piston (19), an upper end of the connecting rod (8) is fixedly connected to an inner top wall of the U-shaped rod (7), a connecting block (22) is fixedly connected to an outer wall of the housing (1), a moving rod (21) is inserted into the connecting block (22), a bayonet (20) matched with an end of the moving rod (21) is formed in an outer wall of the connecting rod (8), a magnet plate (23) is fixedly connected to one end of the moving rod (21) far from the bayonet (20), and an electromagnet is fixedly embedded in one side of the connecting block (22) near the magnet plate (23), a trigger mechanism connected with the electromagnet is arranged in the connecting frame (2), and a telescopic spring (24) is fixedly connected between the magnet plate (23) and the outer wall of the shell (1).

4. An oil filled transformer according to claim 3, characterized in that the triggering mechanism comprises a switch (17) fixedly mounted in the connection frame (2), the end of the switch (17) is arc-shaped, and the outer wall of the sliding plate (4) is in contact with the end of the switch (17).