CN221200888U - Transformer oil tank pressure regulating device - Google Patents

Abstract

The utility model provides a transformer oil tank voltage regulating device which comprises a transformer and a voltage regulating device, wherein the transformer comprises an oil tank and a conservator arranged at the upper part of the oil tank, the voltage regulating device is communicated with the oil tank and the conservator, the voltage regulating device comprises a shell, a piston, a regulating component and a pipeline, the shell is arranged at the top of the oil tank and is communicated with the oil tank, the piston is arranged in the shell in a sliding manner, the regulating component is arranged on the side surface of the shell in a penetrating manner, one end of the regulating component positioned in the shell is connected with the piston, the regulating component can control the piston to be opened when being subjected to different pressures, and the pipeline is communicated between the shell and the conservator. According to the transformer oil tank pressure regulating device, through the arrangement of the pressure regulating device, cooling oil in the oil tank can be discharged into the oil conservator, the oil tank is prevented from being exploded, through the arrangement of the piston, the phenomenon that oil discharge does not occur when the cooling oil fluctuates slightly in the oil tank is ensured, and through the arrangement of the regulating component, the piston can be controlled to be opened under different pressures, and the flexibility is improved.

Description

Transformer oil tank pressure regulating device

Technical Field

The utility model relates to the technical field of transformers, in particular to a transformer oil tank voltage regulating device.

Background

The transformer oil conservator is arranged on the oil tank of the transformer, and is also provided with a pipeline which is sealed by glass, namely a explosion-proof pipe, so that when the transformer is prevented from being failed, the oil temperature is rapidly increased, the volume is rapidly expanded, when the transformer oil conservator cannot be accommodated, the oil flow can crush glass, and the glass is flushed out of the explosion-proof pipe, so that the transformer is protected from being greatly damaged. The transformer is easy to damage by the mode, the loss of cooling oil is easy to cause, the cooling oil cannot be timely supplemented, and the conditions of short circuit and burning are easy to occur.

The existing transformer oil tank and the oil conservator are connected through a pipeline, when the volume of cooling oil in the oil tank expands rapidly, a large amount of cooling oil flows into the oil conservator, and the oil conservator is externally connected with a breather, when the pressure in the oil conservator is overlarge, the pressure can be discharged from the breather, so after the cooling oil in the oil tank is recovered, the oil conservator can not drain oil into the oil tank rapidly due to the fact that the pressure is discharged outside, the condition that the cooling oil in the oil tank cannot be fully filled can be caused, the cooling oil has the functions of cooling and insulation, and when the cooling oil in the oil tank is not full, the problem of short circuit can be caused.

Disclosure of utility model

The utility model aims to provide a transformer oil tank pressure regulating device, which is used for solving the problem that cooling oil cannot be timely supplied to an oil inlet tank after an existing oil tank rapidly expands.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a transformer tank pressure regulating device, the transformer includes the oil tank and fixedly sets up the conservator on oil tank upper portion, pressure regulating device intercommunication the oil tank with the conservator, pressure regulating device includes:

The shell is arranged at the top of the oil tank and communicated with the oil tank; the piston is arranged inside the shell in a sliding manner; the adjusting component is arranged on the side surface of the shell in a penetrating way, one end of the adjusting component, which is positioned in the shell, is connected with the piston, and the adjusting component can control the piston to be opened when receiving different pressures; and the pipeline is communicated and arranged between the shell and the conservator.

Further, an oil inlet is formed in the bottom of the shell, an oil outlet which coincides with the oil inlet is formed in the upper portion of the oil tank, and the oil inlet and the oil outlet are communicated.

Further, the side surface of the shell and the upper part of the shell are respectively provided with a pressure port, and the two pressure ports are communicated through a pressure pipe.

Further, a plurality of first communication holes are formed in the piston in the height direction, the first communication holes are located on one side of the piston, the oil inlet and the pipeline are located on the same axis, and when the first communication holes are located at the oil inlet, oil in the oil tank is discharged into the conservator.

Further, a plurality of the first communication holes form a triangle.

Further, a sealing sleeve is coated on the piston, and a second communication hole is formed in the sealing sleeve, which is located at the first communication hole.

Further, the adjusting component comprises a bolt penetrating through the side wall of the shell and a spring fixedly arranged between the piston and the bolt, the bolt pushes the spring to move, and the bolt is in threaded connection with the side wall of the shell.

Further, a baffle is rotatably arranged on the bolt, the side surface of the baffle is sealed with the shell through a sealing ring, and one end of the spring is fixedly connected with the baffle.

Compared with the prior art, the utility model has the following beneficial effects:

According to the transformer oil tank pressure regulating device, through the arrangement of the pressure regulating device, cooling oil in the oil tank can be discharged into the oil conservator when the pressure in the oil tank is overlarge, the oil tank is prevented from being exploded, through the arrangement of the piston, the phenomenon that oil discharge does not occur when the cooling oil fluctuates slightly in the oil tank is ensured, and through the arrangement of the regulating component, the piston can be controlled to be opened under different pressures, and the flexibility is improved.

In addition, through the setting of a plurality of first connecting holes, ensure the speed of pressure regulating device oil extraction is different to the realization is at the pressure bigger, and the oil extraction volume is bigger, through the setting of pressure mouth, when guaranteeing that the oil tank internal pressure is too big, can release the piston automatically, carries out the pressure release, through the setting of seal cover, ensures after first connecting hole and oil inlet separation, can prevent the discharge of cooling oil, through the setting of spring and bolt, ensures that the pressure of spring is adjustable, thereby ensures that the piston can open when receiving different pressures.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

Fig. 1 is a schematic diagram of the overall structure of a transformer tank voltage regulating device according to an embodiment of the utility model;

FIG. 2 is an exploded view of a fuel tank and a pressure regulating device according to an embodiment of the present utility model;

FIG. 3 is an exploded view of a housing and piston according to an embodiment of the present utility model;

FIG. 4 is a bottom view of the housing and piston according to an embodiment of the present utility model;

FIG. 5 is another angular schematic view of the housing and piston according to an embodiment of the present utility model;

Figure 6 is an exploded view of a seal cartridge and bolt according to an embodiment of the present utility model.

Reference numerals illustrate:

1. an oil tank; 2. a conservator; 3. a housing; 4. a piston;

5. An adjustment assembly; 501. a bolt; 502. a spring; 503. a baffle; 504. a circular groove; 505. round blocks; 506. a threaded hole; 507. a seal ring;

6. A pipe; 7. an oil inlet; 8. an oil outlet; 9. a pressure port; 10. a pressure pipe; 11. a first communication hole; 12. sealing sleeve; 13. and a second communication hole.

Description of the embodiments

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an azimuth or a positional relationship such as "upper", "lower", "inner", "back", and the like are presented, they are based on the azimuth or the positional relationship shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," "coupled," and "connected," are to be construed broadly, unless otherwise specifically limited. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The embodiment relates to a voltage regulating device for a transformer oil tank 1, which is structurally composed of a transformer and the voltage regulating device as shown in fig. 1.

Wherein, the transformer includes oil tank 1, and set up the conservator 2 on oil tank 1 upper portion, pressure regulating device intercommunication oil tank 1 and conservator 2, pressure regulating device includes shell 3, piston 4, adjusting part 5, pipeline 6, shell 3 sets up at the oil tank 1 top, with oil tank 1 intercommunication setting, piston 4 slides and sets up inside shell 3, adjusting part 5 wears to establish in the shell 3 side, adjusting part 5 is located the one end of shell 3 and is connected with piston 4, adjusting part 5 steerable piston 4 opens when receiving different pressures, pipeline 6 intercommunication sets up between shell 3 and conservator 2.

It should be noted that the oil tank 1 and the oil conservator 2 are the oil tank 1 and the oil conservator 2 commonly used on a transformer in the prior art, the pressure regulating device is used for discharging the oil in the oil tank 1 into the oil conservator 2, of course, the pressure regulating device has the function of discharging the oil in the oil tank 1 into the oil conservator 2, that is to say, the oil tank 1 and the oil conservator 2 are also communicated with an oil pipe, the oil pipe is provided with a one-way valve which has the function of replenishing the oil in the oil conservator 2 into the oil tank 1, and the oil pipe and the one-way valve are common parts in the prior art, so that the one-way valve is opened and the oil in the oil conservator 2 is replenished after the cooling oil in the oil tank 1 is reduced; when cooling oil in the oil tank 1 suddenly expands, the pressure regulating device can discharge oil to the oil conservator 2, specifically, the pressure in the oil tank 1 is overlarge, the piston 4 is pushed to move, the pipeline 6 and the oil tank 1 can be communicated after the piston 4 moves, so that oil is discharged to the oil conservator 2 through the pipeline 6, when the pressure release of the oil tank 1 is completed, the pressure is reduced, the piston 4 is reset, the oil discharge is prevented from being continued, the pressure born by the piston 4 can be controlled by the regulating component 5, so that the oil discharge cannot occur in the oil tank 1 in small fluctuation, the oil in the oil tank 1 is prevented from suddenly reducing, and the oil cannot be timely supplemented.

Based on the above overall description, as shown in fig. 2 and 4, an exemplary structure of the pressure regulating device of the transformer oil tank 1 in this embodiment is that an oil inlet 7 is provided at the bottom of the housing 3, an oil outlet 8 overlapping with the oil inlet 7 is provided at the upper part of the oil tank 1, and the oil inlet 7 and the oil outlet 8 are communicated. The side surface of the shell 3 and the upper part of the shell 3 are respectively provided with a pressure port 9, and the two pressure ports 9 are communicated through a pressure pipe 10.

It should be noted that, the size of the oil inlet 7 is the same as the size of the oil outlet 8, and the joint between the oil inlet 7 and the oil outlet 8 is sealed, the oil in the oil tank 1 is discharged from the oil outlet 8 and the pressure port 9 of the oil tank 1 after being expanded, at this time, the piston 4 seals the oil inlet 7, the oil in the oil tank 1 cannot be discharged, and the oil entering the pressure pipe 10 is discharged into the housing 3, and the oil inlet 7 and the pipeline 6 can be communicated after the piston 4 moves due to the pressure of the oil, so that the oil is discharged into the conservator 2.

Preferably, as shown in fig. 2, the piston 4 is provided with a plurality of first communication holes 11 along the height direction, the first communication holes 11 are located at one side of the piston 4, the oil inlet 7 and the pipeline 6 are located on the same axis, and when the first communication holes 11 are located at the oil inlet 7, the oil in the oil tank 1 is discharged into the conservator 2. The plurality of first communication holes 11 constitute a triangle.

Specifically, the first communication hole 11 is used for communicating the oil inlet 7 and the pipeline 6, and the effect of setting up a plurality of first communication holes 11 can accelerate the discharge of oil, after the oil tank 1 accomplishes the pressure release, the adjusting part 5 can reset the piston 4, from newly plugging the oil inlet 7, thereby with the shutoff of oil tank 1, and oil inlet 7 and pipeline 6 are located same axis, ensure the connectivity of first communication hole 11, oil inlet 7 and pipeline 6, the pressure that produces in oil tank 1 is different, the position of promotion piston 4 removal is also different, will cause different quantity of first communication holes 11 and oil inlet 7 and pipeline 6 intercommunication, thereby realize the oil discharge of different flow, the first communication hole 11 that the triangle-shaped is arranged, the longer distance that can ensure the piston 4 position to remove, the flow of discharge is also bigger.

Preferably, as shown in fig. 6, the piston 4 is provided with a sealing sleeve 12 in a cladding manner, and a second communication hole 13 is formed in the sealing sleeve 12 at the position of the first communication hole 11. Specifically, the sealing sleeve 12 can ensure that the oil entering through the pressure port 9 cannot flow out from the housing 3, and also avoid the oil at the position from entering the oil inlet 7 and the pipeline 6, and certainly also avoid the oil at the oil inlet 7 and the pipeline 6, and the second connecting hole on the sealing sleeve 12 can ensure that the sealing sleeve 12 cannot influence the flow of the oil when the pipeline 6 of the oil inlet 7 is communicated with the first connecting hole 11 when the piston 4 is in a sealed state.

As a preferred embodiment, as shown in fig. 5 and 6, the adjusting assembly 5 includes a bolt 501 penetrating the side wall of the housing 3, and a spring 502 fixedly disposed between the piston 4 and the bolt 501, the bolt 501 pushing the spring 502 to move, and the bolt 501 being screwed to the side wall of the housing 3. The bolts 501 are rotatably provided with baffles 503, the sides of the baffles 503 are sealed with the shell 3 through sealing rings 507, and one end of each spring 502 is fixedly connected with the baffles 503.

It should be noted that, the bolt 501 moves on the housing 3, so as to push the baffle 503 to move, and the baffle 503 will compress the spring 502 after moving, when the oil pushes the piston 4, the pressure of the oil is greater than the elastic force of the spring 502, and then the piston 4 can be pushed, so that the position where the bolt 501 moves can ensure that different pressures can push the piston 4, the bolt 501 can be screwed on the housing 3, so that the bolt 501 can stay at the position after moving to the position, and the purpose of adjusting the stress of the piston 4 is to prevent the oil from being discharged when small fluctuation occurs in the oil tank 1, and avoid danger caused by the fact that the oil cannot be recovered in time after being discharged. The sealing washer 507 on the baffle 503 can avoid oil to leak outward from between shell 3 and bolt 501, and offer screw hole 506 on the shell 3, and bolt 501 spiro union is in screw hole 506, and the sealing washer 507 can avoid oil to leak from screw hole 506, and the purpose that sealing washer 507 set up is the prevention, because seal cover 12's setting, the phenomenon of oil can not appear in spring 502 department, and the setting of sealing washer 507 can avoid appearing unexpected. The baffle 503 is provided with a circular groove 504, the bolt 501 is fixedly provided with a circular block 505, and when the bolt 501 rotates, the circular block 505 rotates in the circular groove 504, so that the baffle 503 cannot rotate along with the bolt 501.

The transformer tank 1 pressure regulating device in this embodiment can ensure through pressure regulating device's setting that the internal pressure of oil tank 1 is too big in, can be with the cooling oil in the oil tank 1 in the oil conservator 2 of discharging, avoid oil tank 1 explosion, through the setting of piston 4, ensure that the cooling oil can not appear the phenomenon of oil extraction when the fluctuation of a small amount appears in oil tank 1, through the setting of adjusting component 5, can all open when the different pressures that steerable piston 4 received, improve the flexibility.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (8)

1. Transformer tank pressure regulating device, the transformer includes oil tank (1) and fixes setting up conservator (2) on oil tank (1) upper portion, pressure regulating device intercommunication oil tank (1) with conservator (2), its characterized in that, pressure regulating device includes:

The shell (3) is arranged at the top of the oil tank (1) and is communicated with the oil tank (1);

the piston (4) is arranged inside the shell (3) in a sliding manner;

the adjusting component (5) is arranged on the side face of the shell (3) in a penetrating mode, one end, located in the shell (3), of the adjusting component (5) is connected with the piston (4), and the adjusting component (5) can control the piston (4) to be opened when being subjected to different pressures;

And the pipeline (6) is communicated and arranged between the shell (3) and the oil conservator (2).

2. The transformer tank voltage regulator of claim 1, wherein:

An oil inlet (7) is formed in the bottom of the shell (3), an oil outlet (8) which is coincident with the oil inlet (7) is formed in the upper portion of the oil tank (1), and the oil inlet (7) and the oil outlet (8) are communicated.

3. The transformer tank voltage regulator of claim 2, wherein:

The side of the shell (3) and the upper part of the shell (3) are respectively provided with a pressure port (9), and the two pressure ports (9) are communicated through a pressure pipe (10).

4. A transformer tank voltage regulator according to claim 3, wherein:

the piston (4) is provided with a plurality of first communication holes (11) along the height direction, the first communication holes (11) are positioned on one side of the piston (4), the oil inlet (7) and the pipeline (6) are positioned on the same axis, and when the first communication holes (11) are positioned at the oil inlet (7), oil in the oil tank (1) is discharged into the oil conservator (2).

5. The transformer tank voltage regulator of claim 4, wherein:

The plurality of first communication holes (11) form a triangle.

6. The transformer tank voltage regulator of claim 4, wherein:

The piston (4) is coated with a sealing sleeve (12), and a second communication hole (13) is formed in the sealing sleeve (12) and located at the first communication hole (11).

7. The transformer tank voltage regulator of any one of claims 1-6, wherein:

the adjusting component (5) comprises a bolt (501) penetrating through the side wall of the shell (3) and a spring (502) fixedly arranged between the piston (4) and the bolt (501), the bolt (501) pushes the spring (502) to move, and the bolt (501) is in threaded connection with the side wall of the shell (3).

8. The transformer tank voltage regulator of claim 7, wherein:

The bolt (501) is rotatably provided with a baffle (503), the side surface of the baffle (503) is sealed with the shell (3) through a sealing ring (507), and one end of the spring (502) is fixedly connected with the baffle (503).