CN112133523A - A transformer that balances oil - Google Patents

Abstract

The invention discloses a transformer for balancing oil, which includes a casing, a cover plate is rotatably connected to the upper side wall of the casing, an overflow prevention groove is arranged in the casing, and an electromagnetic field is fixedly connected to the overflow prevention groove. Iron, a magnet plate is slidably connected in the overflow prevention groove, the upper side wall of the magnet plate is fixedly connected with a trapezoidal plate through a connecting rod, and the lower side wall of the magnet plate is fixed between the inner bottom wall of the overflow prevention groove A telescopic spring is connected, and a liquid storage tube is arranged on the lower side wall of the casing. When the temperature of the transformer body is too high, the expansion of the expansion liquid triggers the electromagnet to energize to generate a magnetic force, and then drives the trapezoidal plate to move down to open the upper end of the overflow prevention groove, balances the pressure inside the shell caused by the temperature rise, and at the same time the volume Part of the increased oil flows into the anti-overflow tank to balance the increased oil volume to avoid oil expansion and overflow. At the same time, the heat dissipation plate is cleaned by the movement of the scraper, so that the heat dissipation plate is kept clean and has sufficient heat conduction and heat dissipation. Effect.

Description

A transformer that balances oil

technical field

The invention relates to the technical field of transformers, in particular to a transformer for balancing oil.

Background technique

The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the iron core (magnetic core). The main functions are: voltage transformation, current transformation, impedance transformation, isolation, voltage regulation (magnetic core). saturating transformer) etc.

At present, the common transformer is an oil-immersed transformer. The body (winding and iron core) of the oil-immersed transformer is installed in an oil tank filled with transformer oil. The oil tank is welded with steel plates. When its own temperature is too high, the oil in the transformer will The expansion of the liquid volume will easily cause the internal pressure to increase. Under the action of the pressure, the oil escapes from the connection between the gasket and the box cover, causing oil leakage, which in turn affects the normal use of the transformer.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a transformer for balancing oil in order to solve the problems in the background technology.

In order to achieve the above object, the present invention adopts the following technical solutions:

A transformer for balancing oil, comprising a casing, a cover plate is rotatably connected to the upper side wall of the casing, an overflow prevention groove is arranged in the casing, an electromagnet is fixedly connected in the overflow prevention groove, and the A magnet plate is slidably connected in the overflow prevention groove, the upper side wall of the magnet plate is fixedly connected with a trapezoidal plate through a connecting rod, and a telescopic spring is fixedly connected between the lower side wall of the magnet plate and the inner bottom wall of the overflow prevention groove , the lower side wall of the casing is provided with a liquid storage pipe, a heat-conducting rod is connected between the liquid storage pipe and the outer wall of the casing, two pistons are slidably connected in the liquid storage pipe, and the liquid storage pipe is filled with There is an expansion liquid located between the two pistons, the outer side walls of the two pistons are fixedly connected with a push rod, and the outer wall of the push rod is sleeved with two ends that are respectively connected to the outer wall of the push rod and the outer wall of the end of the liquid storage pipe. The return spring is fixedly connected, the outer walls on both sides of the casing are fixedly connected with a cooling plate, a cleaning mechanism is arranged between the top rod and the cooling plate, and the lower side wall of the casing is fixedly connected with a cooling plate located on the left side. A vertical plate on the outer side of the ejector rod, and a switch connected with the electromagnet is fixedly installed on the side of the vertical plate close to the ejector rod.

Preferably, the cleaning mechanism includes a limit plate fixedly connected to the outer wall of the casing, a moving rod is inserted on the limit plate, and a U-shaped plate is fixedly connected to the upper end of the moving rod. The two ends of the plate are fixedly connected with extension plates, the lower end of the extension plate is fixedly connected with a scraper in contact with the outer wall of the heat dissipation plate, the ends of the two top rods are rotatably connected with rotating rods, and the two rotating rods are connected to each other. One end of the rod away from the top rod is connected in rotation with each other, and the lower end of the moving rod is located at the upper end of the connection between the two rotating rods.

Preferably, the number of the heat dissipation plates is plural, and the number of the scrapers corresponds to the number of the heat dissipation plates.

Preferably, the swelling liquid is one of alcohol, mercury, and dichloromethane.

Compared with the prior art, the advantages of the transformer with balanced oil are:

1. Set up liquid storage pipe, heat conduction rod, electromagnet, magnet plate, trapezoidal plate, ejector rod and switch. When the temperature of the casing itself is too high, the internal pressure of the casing increases and the oil volume increases. The heat transfer rod conducts heat to the liquid storage tube, and the expansion liquid expands under the action of heat, pushing the two pistons to move to the outside, and the top rod presses the switch, so that the electromagnet is energized to generate the same magnetic force as the magnet plate close to the side. , under the action of magnetic repulsion, the magnet plate is pushed down, and the trapezoidal plate is moved to the lower side through the connecting rod, so that the upper end of the anti-overflow groove is opened, the space in the casing is increased, and the internal temperature of the casing is balanced. At the same time, part of the oil with increased volume flows into the anti-overflow tank to balance the oil with increased volume to avoid oil expansion and overflow;

2. Set up a cleaning mechanism. During the process of the ejector rod moving to the outside, the ejector rod drives the upper end of the rotating rod to move to the outside, the lower end of the rotating rod moves to the upper side, pushes the moving rod to move up, and the moving rod drives the U-shaped plate and the The scraper moves, the scraper moves on the outer wall of the radiator plate and scrapes the dust on the surface of the radiator plate, increases the convection area between the radiator plate and the air, and ensures the heat dissipation effect of the radiator plate;

To sum up, when the temperature of the transformer body is too high, the expansion of the expansion liquid triggers the electromagnet to be energized to generate a magnetic force, which in turn drives the trapezoidal plate to move down so that the upper end of the overflow prevention groove is opened, and the balance shell is caused by the temperature rise. At the same time, part of the oil with increased volume flows into the anti-overflow tank to balance the increased oil to avoid oil expansion and overflow. At the same time, the radiator plate is cleaned by the movement of the scraper to keep the radiator plate clean. And sufficient heat conduction and heat dissipation effect.

Description of drawings

Fig. 1 is the structural representation of a kind of transformer that balances oil liquid proposed by the present invention;

Figure 2 is a side view of a heat sink in a transformer for balancing oil provided by the present invention;

FIG. 3 is a schematic diagram of the internal structure of a liquid storage pipe in a transformer for balancing oil liquid proposed by the present invention.

In the picture: 1 shell, 2 cover plate, 3 anti-overflow groove, 4 telescopic spring, 5 magnet plate, 6 electromagnet, 7 trapezoidal plate, 8 connecting rod, 9 liquid storage pipe, 10 heat conduction rod, 11 ejector rod, 12 Return spring, 13 vertical plates, 14 switches, 15 cooling plates, 16 scrapers, 17 U-shaped plates, 18 moving rods, 19 rotating rods, 20 pistons, 21 expansion liquid.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

Referring to Figures 1-3, a transformer for balancing oil includes a casing 1, a cover plate 2 is rotatably connected to the upper side wall of the casing 1, an overflow prevention groove 3 is arranged in the casing 1, and the overflow prevention groove 3 is fixed inside An electromagnet 6 is connected, a magnet plate 5 is slidably connected in the overflow prevention groove 3, the upper side wall of the magnet plate 5 is fixedly connected with a trapezoidal plate 7 through a connecting rod 8, and the lower side wall of the magnet plate 5 is connected with the inner side of the overflow prevention groove 3. A telescopic spring 4 is fixedly connected between the bottom walls. When the telescopic spring 4 is fully deployed, the trapezoidal plate 7 is located at the opening of the overflow prevention groove 3, and the lower surface of the trapezoidal plate 7 is higher than the upper surface of the overflow prevention groove 3. The casing 1 A liquid storage pipe 9 is arranged on the lower side wall of the liquid storage pipe 9, a heat-conducting rod 10 is connected between the liquid storage pipe 9 and the outer wall of the casing 1, two pistons 20 are slidably connected in the liquid storage pipe 9, and the liquid storage pipe 9 is filled with The expansion liquid 21 between the two pistons 20, the expansion liquid 21 is a kind of alcohol, mercury, and dichloromethane. Alcohol, mercury or dichloromethane have a certain degree of expansion under the action of heat. The outer sides of the two pistons 20 The walls are fixedly connected with the ejector rod 11 , and the outer wall of the ejector rod 11 is sleeved with a return spring 12 whose two ends are respectively fixedly connected to the outer wall of the ejector rod 11 and the outer wall of the end of the liquid storage pipe 9 . A heat dissipation plate 15 is fixedly connected, the lower side wall of the housing 1 is fixedly connected with a vertical plate 13 located on the outer side of the left ejector rod 11, and a switch 14 connected to the electromagnet 6 is fixedly installed on the side of the vertical plate 13 close to the ejector rod 11. The switch 14 is connected to the electromagnet 6 and the external power supply through wires. When the surface temperature of the housing 1 is too high, the heat is exported to the liquid storage pipe 9 through the heat conduction rod 10, and the expansion liquid 21 expands under the action of the heat, pushing the two. The piston 20 moves to the outside, and the ejector rod 11 presses the switch 14, so that the electromagnet 6 is energized to generate the same magnetic force as the magnet plate 5 close to the side, and the magnet plate 5 is pushed down under the action of the magnetic repulsion, and passes through the connecting rod. 8. Drive the trapezoidal plate 7 to move to the lower side, so that the upper end of the anti-overflow groove 3 is opened, the space in the casing 1 is increased, the pressure inside the casing 1 caused by the temperature rise is balanced, and the oil with the increased volume flows in. Balance the oil with the increased volume in the overflow prevention tank 3 to prevent the oil from expanding and overflowing.

A cleaning mechanism is provided between the ejector rod 11 and the heat dissipation plate 15. The cleaning mechanism includes a limit plate fixedly connected to the outer wall of the housing 1. A moving rod 18 is inserted on the limit plate, and the upper end of the moving rod 18 is fixedly connected with a U-shaped plate 17, two ends of the U-shaped plate 17 are fixedly connected with an extension plate, the lower end of the extension plate is fixedly connected with a scraper 16 in contact with the outer wall of the heat dissipation plate 15, and the ends of the two ejector rods 11 are rotatably connected with rotating Rod 19, the ends of the two rotating rods 19 away from the top rod 11 are connected to each other in rotation, and the lower end of the moving rod 18 is located at the upper end of the connection between the two rotating rods 19. When the top rod 11 moves to the outside, the upper end of the rotating rod 19 moves to the outside. Move, the lower end of the rotating rod 19 moves to the upper side, pushes the moving rod 18 to move up, the moving rod 18 drives the U-shaped plate 17 and the scraper 16 to move, and the scraper 16 moves on the outer wall of the heat dissipation plate 15 and dissipates heat. The dust on the surface of the plate 15 is scraped off, the convection area between the heat dissipation plate 15 and the air is increased, and the heat dissipation effect of the heat dissipation plate 15 is ensured.

The number of the heat dissipation plates 15 is multiple, and the number of the scrapers 16 corresponds to the number of the heat dissipation plates 15. The multiple number of the heat dissipation plates 15 ensures sufficient heat conduction and heat dissipation, and avoids the high temperature of the transformer body.

Further description, the upper fixed connection, unless otherwise specified and limited, should be understood in a broad sense. For example, it may be welding, gluing, or a conventional means well-known to those skilled in the art, such as an integral molding arrangement.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. The equivalent replacement or change of the inventive concept thereof shall be included within the protection scope of the present invention.

Claims (4)

1. A transformer for balancing oil, comprising a casing (1), characterized in that a cover plate (2) is rotatably connected to the upper side wall of the casing (1), and a cover plate (2) is rotatably connected to the casing (1), and the casing (1) is provided with There is an overflow prevention groove (3), an electromagnet (6) is fixedly connected in the overflow prevention groove (3), a magnet plate (5) is slidably connected in the overflow prevention groove (3), and the magnet plate (5) ) is fixedly connected with a trapezoidal plate (7) through a connecting rod (8), and a telescopic spring ( 4), the lower side wall of the casing (1) is provided with a liquid storage pipe (9), and a heat-conducting rod (10) is connected between the liquid storage pipe (9) and the outer wall of the casing (1), so Two pistons (20) are slidably connected in the liquid storage pipe (9), the liquid storage pipe (9) is filled with an expansion liquid (21) located between the two pistons (20), and the two pistons (20) are The outer side walls of the (20) are fixedly connected with the ejector rod (11), and the outer wall of the ejector rod (11) is sleeved with two ends respectively fixed to the outer wall of the ejector rod (11) and the outer wall of the end of the liquid storage pipe (9). A connected return spring (12), a cooling plate (15) is fixedly connected to both outer walls of the casing (1), and a cleaning mechanism is provided between the top rod (11) and the cooling plate (15), A vertical plate (13) located on the outer side of the left ejector rod (11) is fixedly connected to the lower side wall of the casing (1), and a side of the vertical plate (13) close to the ejector rod (11) is fixedly installed with an electromagnetic connection. Switch (14) to which iron (6) is connected. 2. The oil-balancing transformer according to claim 1, wherein the cleaning mechanism comprises a limit plate fixedly connected to the outer wall of the casing (1), and the limit plate is inserted There is a moving rod (18), the upper end of the moving rod (18) is fixedly connected with a U-shaped plate (17), the two ends of the U-shaped plate (17) are fixedly connected with an extension plate, and the lower end of the extension plate is fixed A scraper (16) in contact with the outer wall of the heat dissipation plate (15) is connected, the ends of the two top rods (11) are rotatably connected with rotating rods (19), and the two rotating rods (19) are far away from One end of the top rod (11) is rotatably connected to each other, and the lower end of the moving rod (18) is located at the upper end of the connection between the two rotating rods (19). 3 . The oil-balancing transformer according to claim 2 , wherein the number of the cooling plates ( 15 ) is multiple, and the number of the scrapers ( 16 ) is the same as the number of the cooling plates ( 15 ). 4 . Corresponding. 4. The transformer of claim 1, wherein the expansion liquid (21) is one of alcohol, mercury, and dichloromethane.

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