CN220249237U - Transformer exhaust oil-filled flange - Google Patents

Abstract

The utility model relates to the technical field of transformer equipment, in particular to an exhaust oil-filled flange of a transformer. The transformer exhaust oil charge flange comprises a flange plate, an oil pipe and an exhaust valve, wherein one end of the oil pipe is connected with the flange plate, the other end of the oil pipe is connected with an oil injection mechanism, the oil pipe is provided with an oil transportation channel, the oil transportation channel penetrates through the oil pipe, a plurality of air inlets are formed in the side wall of the oil transportation channel along the extending direction of the oil transportation channel at intervals, the oil pipe is provided with a connecting channel communicated with the plurality of air inlets and an exhaust port communicated with the connecting channel, the exhaust port can be communicated with the outside, the exhaust valve is arranged at the exhaust port and connected to the outer wall of the oil pipe, and the exhaust valve is used for opening or closing the exhaust port. The oil injection mechanism is characterized in that a plurality of air inlets are arranged at intervals along the extending direction of the oil transportation channel, when the oil injection mechanism injects oil to the oil transportation channel, oil and gas can sequentially pass through each air inlet, even if the gas cannot be discharged in time when passing through one air inlet positioned in front, the gas can be further discharged through other subsequent air inlets under the pushing of the oil.

Description

Transformer exhaust oil-filled flange

Technical Field

The utility model relates to the field of transformer equipment, in particular to an exhaust oil-filled flange of a transformer.

Background

The oil tank of the oil-immersed transformer is required to be filled with oil, the oil plays a role in cooling and radiating the oil-immersed transformer component and plays an insulating role on the winding, the volume of transformer oil of the oil-immersed transformer can change obviously along with the change of temperature, when the environmental temperature becomes low, the volume of the transformer oil can also become small, the oil tank of the oil-immersed transformer has allowance, and the oil should be timely replenished. In the oil supplementing process of the oil immersed transformer, the requirement of oil injection oil quality needs to meet the requirement that the gas content is not higher than 0.1%, so that the discharge of the pipeline gas accumulation in the oil injection process of the oil immersed transformer becomes an important problem.

To this, the flange of prior art design, oil tank notes drain flange of oily formula transformer after transformation as disclosed in the earlier patent of application number CN201720921023.5 contains ring flange, flange oil pipe, round hole, take the iron pipe and the exhaust valve of turnbuckle, and this flange oil pipe's one end sets up in one side central part of ring flange perpendicularly, and flange oil pipe's up end is equipped with the round hole, takes the perpendicular welding in the top of round hole of iron pipe bottom of turnbuckle, takes the top of the iron pipe of turnbuckle to be equipped with the exhaust valve. When the small exhaust valve is opened, the accumulated air reaches an iron pipe with a turnbuckle along the oiling direction of the flange oil pipe, and is discharged to the outside from the small exhaust valve along the iron pipe until transformer oil is discharged from the small exhaust valve, which represents that the exhaust is completed.

In the prior art, the oil injecting and discharging flange of the oil storage cabinet of the transformer is only provided with an exhaust port on an oil way, in the oil injecting process, if the oil injecting speed is high, accumulated air can exist to cross the exhaust port, so that the accumulated air cannot be fully discharged, and when the oil injecting and discharging flange of the oil storage cabinet of the transformer is inclined, the condition that the accumulated air cannot be fully discharged is more serious, in the conditions, even if oil leaks from an exhaust small valve, the exhaust can not be completed, and the leaked oil can cause mess.

Disclosure of Invention

The utility model aims to provide an exhaust oil-filled flange of a transformer, which solves the problem of insufficient air accumulation and discharge in an oil pipe of the exhaust oil-filled flange of the transformer in the prior art.

The technical scheme adopted by the utility model is as follows:

the transformer exhaust oil-filled flange comprises a flange plate, an oil pipe and an exhaust valve, wherein one end of the oil pipe is connected with the flange plate, the other end of the oil pipe is connected with an oil injection mechanism,

the oil pipe is provided with an oil conveying channel, the oil conveying channel is communicated with the oil pipe, a plurality of air inlets are formed in the side wall of the oil conveying channel along the extending direction of the oil conveying channel at intervals, the oil pipe is provided with a plurality of connecting channels communicated with the air inlets and an exhaust port communicated with the connecting channels, the exhaust port can be communicated with the outside, the exhaust valve is arranged at the exhaust port and connected to the outer wall of the oil pipe, and the exhaust valve is used for opening or closing the exhaust port.

Further, the exhaust valve comprises a valve shell and a valve core, and the valve shell is arranged at the periphery of the exhaust port and connected to the outer wall of the oil pipe;

an inner cavity and an oil outlet are formed in the valve shell, the exhaust port can be communicated with the inner cavity, and the inner cavity is communicated with the oil outlet;

the valve core is at least partially positioned in the valve housing, the valve core is movably connected with the valve housing, and the valve core is used for opening or closing the exhaust port.

Further, the transformer exhaust oil charging flange further comprises an oil storage box arranged on the outer wall of the oil pipe, an oil storage cavity is arranged on the oil storage box and communicated with the oil outlet, the oil storage cavity is used for receiving oil discharged by the oil outlet, an oil drain port is formed in the oil storage cavity and used for being connected with an external oil collecting device.

Further, the transformer exhaust oil charging flange further comprises an oil pipe connector arranged at the oil outlet, and the oil pipe connector is used for being connected with an external oil liquid collecting device through connecting the oil pipe.

Further, the valve core includes a body that is screw-coupled with the valve housing, and a valve stem that can be inserted into or withdrawn from the exhaust port to close or open the exhaust port.

Further, the transformer exhaust oil charging flange further comprises a first sealing ring arranged on the inner wall of the exhaust port, and when the valve rod closes the exhaust port, the valve rod is abutted with the first sealing ring; and/or the number of the groups of groups,

the transformer exhaust oil charging flange further comprises a second sealing ring arranged in the valve shell, and the valve rod is arranged in the second sealing ring in a sealing sliding penetrating mode all the time.

Further, the first end of the main body is connected with the valve rod and is located in the valve casing, and the second end of the main body is located outside the valve casing and is provided with a connecting structure matched with a wrench.

Further, the transformer exhaust oil charging flange further comprises a filter screen, the filter screen is arranged on the inner side of the exhaust port, and the filter screen is connected to the oil pipe.

Further, the flange plate is provided with a plurality of U-shaped bolt holes, and the U-shaped bolt holes are arranged at intervals along the circumferential direction of the flange plate.

Further, the transformer exhaust oil charging flange is provided with a reducer pipe head, a first end of the reducer pipe head is connected with the oil pipe, and a second end of the reducer pipe head is used for enabling the oil pipe to be connected with an external oil injection mechanism.

The utility model has the beneficial effects that:

the utility model provides a transformer exhaust oil-filled flange, which comprises a flange plate, an oil pipe and an exhaust valve, wherein one end of the oil pipe is connected with the flange plate, the other end of the oil pipe is connected with an oiling mechanism, the oil pipe is provided with an oil conveying channel, the oil conveying channel penetrates through the oil pipe, a plurality of air inlets are arranged on the side wall of the oil conveying channel at intervals along the extending direction of the oil conveying channel, the oil pipe is provided with a connecting channel communicated with the plurality of air inlets and an exhaust port communicated with the connecting channel, the exhaust port can be communicated with the outside, the exhaust valve is arranged at the exhaust port and connected to the outer wall of the oil pipe, and the exhaust valve is used for opening or closing the exhaust port. In this exhaust oil charge flange, set up a plurality of air inlets along oiling direction on the oil transportation passageway inner wall interval in oil pipe, be equipped with the connecting tube who gathers each air inlet to gas vent in the oil pipe, when opening the gas vent, and when oiling the oil transportation passageway of oil pipe through oiling mechanism, the gas in the pipeline is promoted the air inlet and is synchronous to each air inlet by fluid, if oiling fast time and this flange take place the slope, even gas can not in time discharge when being located a preceding air inlet through being located, but still can pass through subsequent other air inlets under the promotion of fluid, thereby can continue the discharge, so can guarantee that the gas of oil transportation passageway can discharge as far as possible, the exhaust effect is better.

Drawings

FIG. 1 is a schematic diagram of a transformer exhaust oil-filled flange according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an exhaust oil-filled flange of a transformer in an embodiment of the utility model;

FIG. 3 is a schematic diagram of an oil storage box of an exhaust oil-filled flange of a transformer according to an embodiment of the present utility model;

fig. 4 is a front view of a reducing oil pipe of an exhaust oil charging flange of a transformer according to an embodiment of the present utility model.

In the figure:

1. a flange plate; 11. u-shaped bolt holes;

2. an oil pipe; 21. an oil delivery passage; 22. an air inlet; 23. a connection channel; 24. an exhaust port;

3. an exhaust valve; 31. a valve housing; 311. an inner cavity; 312. an oil outlet; 32. a valve core; 321. a connection structure; 322. a main body; 323. a valve stem;

4. an oil storage box; 41. an oil storage chamber; 42. an oil drain port;

5. a first seal ring;

6. a second seal ring;

7. a filter screen;

8. reducing pipe head;

9. an oil pipe joint.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; 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 will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 4, the present embodiment provides a transformer exhaust oil-filled flange, which includes a flange plate 1, an oil pipe 2, and an exhaust valve 3. Wherein, flange 1 is connected to the one end of oil pipe 2, flange 1 be used for with the butt flange connection of transformer, oil pipe 2 is equipped with defeated oil channel 21, defeated oil channel 21 link up oil pipe 2, defeated oil channel 21 is used for with the transformer intercommunication, and the other end of oil pipe 2 is used for being connected with oiling mechanism, oiling mechanism is used for injecting oil to defeated oil channel 21 to in the transformer.

In order to ensure that the gas of the oil delivery channel 21 can be discharged in the oiling process, a plurality of air inlets 22 are formed in the side wall of the oil delivery channel 21, the plurality of air inlets 22 are arranged at intervals along the extending direction of the oil delivery channel 21, the oil pipe 2 is provided with a connecting channel 23 communicated with the plurality of air inlets 22 and an air outlet 24 communicated with the connecting channel 23, and the air outlet 24 can be communicated with the outside. The exhaust valve 3 is provided at the exhaust port 24 and is connected to the outer wall of the oil pipe 2, and the exhaust valve 3 is used to open or close the exhaust port 24. Because a plurality of air inlets 22 are arranged at intervals along the extending direction of the oil conveying channel 21, when the oil injection mechanism injects oil to the oil conveying channel 21, oil and gas can sequentially pass through each air inlet 22, even if the gas cannot be discharged in time when passing through the air inlet 22 positioned in front, the gas can still pass through other subsequent air inlets 22 under the pushing of the oil, so that the gas of the oil conveying channel 21 can be discharged continuously, and the gas can be discharged as much as possible.

Optionally, referring to fig. 1, a plurality of U-shaped bolt holes 11 are provided on the flange 1, and the plurality of U-shaped bolt holes 11 are arranged at intervals along the circumferential direction of the flange 1. Specifically, a plurality of threaded holes are formed in the butt flange of the transformer, and a plurality of bolts penetrate through the plurality of U-shaped bolt holes 11 in a one-to-one correspondence manner and are in threaded connection with the plurality of threaded holes in a one-to-one correspondence manner so as to realize connection of the flange plate 1 and the butt flange of the transformer. Through setting up U type bolt hole 11, the butt flange of the transformer of applicable multiple model to when installing the bolt, have higher adjustability. Specifically, in the present embodiment, a scheme is exemplarily given in which four U-shaped bolt holes 11 are equally spaced in the circumferential direction of the flange plate 1, and in other embodiments, the number of U-shaped bolt holes 11 may be increased or decreased as required. Further, two sealing ring fixing holes are further formed in the flange plate 1 and used for assisting in fixing the sealing rubber pad at the bottom of the flange plate 1.

Optionally, referring to fig. 4, the transformer exhaust oil-filled flange is provided with a reducer pipe head 8, a first end of the reducer pipe head 8 is connected with the oil pipe 2, and a second end of the reducer pipe head 8 is used for connecting an external oil injection mechanism. The number of reducer pipe heads 8 in the present embodiment is plural, and the outer diameters of the second ends of the plurality of reducer pipe heads 8 are not equal. Specifically, the reducer pipe head 8 in the present embodiment is configured with two types, and the outer diameters of the second ends of the reducer pipe head 8 are Φ50 and Φ30, respectively, so that oil-filled pipes of the types Φ50 and Φ30 can be connected, respectively. In other embodiments, the reducer pipe head 8 with the second end diameter of other sizes can be selected according to the type of the oil filling pipe of the oil filling mechanism.

Optionally, referring to fig. 2, the exhaust valve 3 includes a valve housing 31 and a valve core 32, the valve housing 31 is disposed at the periphery of the exhaust port 24 and is connected to the outer wall of the oil pipe 2, an inner cavity 311 and an oil outlet 312 are formed in the valve housing 31, the exhaust port 24 can be communicated with the inner cavity 311, the inner cavity 311 is communicated with the oil outlet 312, the valve core 32 is at least partially located in the valve housing 31, the valve core 32 is movably connected with the valve housing 31, and the valve core 32 is used for opening or closing the exhaust port 24. The exhaust port 24 is a part of an oil passage, and the valve body 32 is movably connected to the valve housing 31 to control opening and closing of the exhaust port 24 and opening and closing of the oil passage.

Specifically, the valve core 32 includes a main body 322 and a valve stem 323, the main body 322 is screw-coupled with the valve housing 31, the exhaust port 24 has been closed when the valve stem 323 is extended into the exhaust port 24, and the exhaust port 24 has been opened when the valve stem 323 is withdrawn from the exhaust port 24. In this embodiment, the main body 322 is screwed with the valve housing 31, and when the main body 322 is screwed into the valve housing 31, the valve rod 323 extends into the exhaust port 24 to block the exhaust port 24, and when the main body 322 is screwed out of the valve housing 31, the valve rod 323 withdraws from the exhaust port 24 to open the exhaust port 24. The body 322 is threaded with the valve housing 31, and the connection is more secure, reducing the likelihood of mislanding the valve during operation as compared to the prior art. In other embodiments, the body 322 may also be slip fit with the valve housing 31.

Optionally, referring to fig. 2, the transformer exhaust oil-filled flange further includes a first sealing ring 5 mounted on an inner wall of the exhaust port 24, and when the valve rod 323 closes the exhaust port 24, the valve rod 323 abuts against the first sealing ring 5; and/or the number of the groups of groups,

the transformer exhaust oil-filled flange further comprises a second sealing ring 6 arranged in the valve shell 31, and the valve rod 323 is arranged in the second sealing ring 6 in a sealing sliding penetrating way all the time. The first sealing ring 5 can strengthen the air tightness when the exhaust port 24 is closed, and the second sealing ring 6 can strengthen the air tightness between the valve rod 323 and the valve shell 31, so that gas and oil can not leak from the valve shell 31 to the valve rod 323. In particular, in the present embodiment, a scheme of providing the first seal ring 5 and the second seal ring 6 at the same time is exemplarily given.

Alternatively, a first end of the body 322 is connected to the valve stem 323 and is located within the valve housing 31, and a second end of the body 322 is located outside the valve housing 31 and is provided with a connection structure 321 for mating with a wrench. So arranged, the valve core 32 is conveniently screwed by a wrench to effect opening or closing of the exhaust port 24. The connecting structure 321 may be configured to be convex or concave, and the cross-section shape of the connecting structure may be a straight line, a cross, a rice shape, or a polygon, which is specifically configured to be convex hexagon in this embodiment, and may be used with a hexagonal socket wrench. In other embodiments, the wrench can also be provided with a concave inner hexagon and matched with the inner hexagonal wrench.

Optionally, referring to fig. 2, the transformer exhaust oil charging flange further includes a filter screen 7, the filter screen 7 is disposed inside the exhaust port 24, and the filter screen 7 is connected to the oil pipe 2. The filter screen 7 is used for preventing the first sealing ring 5 or the second sealing ring 6 from being broken and falling into the oil conveying channel 21 after falling off, so that the oil enters the transformer.

Optionally, the transformer exhaust oil charging flange further comprises an oil storage box 4 mounted on the outer wall of the oil pipe 2, an oil storage cavity 41 is arranged on the oil storage box 4, the oil storage cavity 41 is communicated with the oil outlet 312, the oil storage cavity 41 is used for receiving oil discharged by the oil outlet 312, an oil drain port 42 is formed in the oil storage cavity 41, and the oil drain port 42 is used for being connected with an external oil collecting device.

Optionally, referring to fig. 2 and 3, the transformer exhaust oil charging flange further includes an oil pipe joint 9 mounted at the oil outlet 312, and the oil pipe joint 9 is used for connecting an external oil collecting device through the connecting oil pipe 2. In the process of filling oil into the oil conveying pipeline 2, accumulated gas is extruded and discharged by oil, at the moment, certain oil is discharged while the gas is discharged, particularly when the adjacent gas is completely emptied, more oil is discharged, and only when the oil is continuously discharged and no gas exists, the gas can be indicated to be emptied, and at the moment, the discharged oil can be collected through the oil storage box 4 or the oil pipe joint 9, so that the oil can be prevented from falling into the environment, and mess is caused.

In this embodiment, the oil pipe joint 9 and the oil storage box 4 are provided at the same time, and in other embodiments, one of them may be provided. Specifically, in the present embodiment, the oil pipe joint 9 is welded at the oil outlet 312 of the valve housing 31, and the oil pipe joint 9 may be connected to a hose for guiding the discharged oil to an external oil collecting device, suitable for use when the oil is continuously discharged, and suitable for use when the oil pipe 2 is at any angle. The oil storage box 4 is suitable for being used when the oil pipe 2 is arranged flatly, the oil storage box 4 is welded on the outer wall of the oil pipe 2, when oil is discharged from the oil outlet 312, the oil can be collected in the oil storage cavity 41 of the oil storage box 4, and a certain amount of accumulated oil can be discharged into an external oil storage mechanism through the oil discharge port 42 of the oil storage box 4. In addition, a reinforcing device can be arranged at the joint of the oil pipe joint 9 and the hose to prevent oil leakage. The oil storage box 4 is specifically configured in a barrel shape, so that the discharged oil can be prevented from splashing, and the oil drain 42 is configured in an arch shape, so that the oil can be easily guided to smoothly flow into the external oil storage mechanism. The oil pipe joint 9 and the oil storage box 4 are matched for use, so that the transformer exhaust oil charging flange is used at any angle, and oil cannot leak into the external environment.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The transformer exhaust oil charging flange comprises a flange plate (1), an oil pipe (2) and an exhaust valve (3), wherein one end of the oil pipe (2) is connected with the flange plate (1), the other end is connected with an oil injection mechanism,

the oil pipe (2) is provided with an oil conveying channel (21), the oil conveying channel (21) penetrates through the oil pipe (2), a plurality of air inlets (22) are formed in the side wall of the oil conveying channel (21) at intervals along the extending direction of the oil conveying channel (21), the oil pipe (2) is provided with a connecting channel (23) communicated with the plurality of air inlets (22) and an air outlet (24) communicated with the connecting channel (23), and the air outlet (24) can be communicated with the outside;

the exhaust valve (3) is arranged at the exhaust port (24) and connected to the outer wall of the oil pipe (2), and the exhaust valve (3) is used for opening or closing the exhaust port (24).

2. Transformer exhaust oil-filled flange according to claim 1, characterized in that the exhaust valve (3) comprises a valve housing (31) and a valve core (32), the valve housing (31) being arranged at the periphery of the exhaust port (24) and being connected to the outer wall of the oil pipe (2);

an inner cavity (311) and an oil outlet (312) are formed in the valve casing (31), the exhaust port (24) can be communicated with the inner cavity (311), and the inner cavity (311) is communicated with the oil outlet (312);

the valve core (32) is at least partially positioned in the valve housing (31), the valve core (32) is movably connected with the valve housing (31), and the valve core (32) is used for opening or closing the exhaust port (24).

3. The transformer exhaust oil charging flange according to claim 2, further comprising an oil storage box (4) mounted on the outer wall of the oil pipe (2), wherein an oil storage cavity (41) is arranged on the oil storage box (4), the oil storage cavity (41) is communicated with the oil outlet (312), the oil storage cavity (41) is used for receiving oil discharged from the oil outlet (312), an oil drain port (42) is formed in the oil storage cavity (41), and the oil drain port (42) is used for being connected with an external oil collecting device.

4. The transformer exhaust and oil-filled flange according to claim 2, further comprising an oil pipe joint (9) mounted to the oil outlet (312), the oil pipe joint (9) being adapted to be connected to an external oil collection device by connecting the oil pipe (2).

5. The transformer exhaust oil-filled flange according to claim 2, characterized in that the valve core (32) comprises a main body (322) and a valve stem (323), the main body (322) being in threaded connection with the valve housing (31), the valve stem (323) being capable of extending into or out of the exhaust port (24) to close or open the exhaust port (24).

6. The transformer exhaust and oil-filled flange according to claim 5, further comprising a first sealing ring (5) mounted on an inner wall of the exhaust port (24), the valve stem (323) abutting the first sealing ring (5) when the valve stem (323) closes the exhaust port (24); and/or the number of the groups of groups,

the transformer exhaust oil charging flange further comprises a second sealing ring (6) arranged in the valve shell (31), and the valve rod (323) is arranged in the second sealing ring (6) in a sealing sliding penetrating mode all the time.

7. The transformer exhaust oil-filled flange according to claim 5, characterized in that a first end of the main body (322) is connected with the valve stem (323) and is located inside the valve housing (31), and a second end of the main body (322) is located outside the valve housing (31) and is provided with a connecting structure (321) cooperating with a wrench.

8. Transformer exhaust and oil-filled flange according to any of claims 1-7, characterized in that it further comprises a filter screen (7), said filter screen (7) being arranged inside said exhaust port (24), said filter screen (7) being connected to said oil pipe (2).

9. Transformer exhaust oil-filled flange according to any of claims 1-7, characterized in that the flange plate (1) is provided with a number of U-shaped bolt holes (11), which number of U-shaped bolt holes (11) are arranged at intervals in the circumferential direction of the flange plate (1).

10. Transformer exhaust and oil-filled flange according to any of claims 1-7, characterized in that it is provided with a reducer pipe head (8), a first end of the reducer pipe head (8) being connected to the oil pipe (2), a second end of the reducer pipe head (8) being used for connecting the oil pipe (2) to an external oiling mechanism.