CN219626441U - Needle type oil sample valve and transformer - Google Patents

Abstract

The utility model discloses a needle type oil sample valve which is connected to an oil tank of a transformer and comprises an oil taking component and a plug seat, wherein one end face of the plug seat is a plane perpendicular to the axis of the plug seat and is used for being connected with the oil taking component, and the other end face of the plug seat is an inclined plane not perpendicular to the axis of the plug seat and is used for being connected with the oil tank of the transformer. The needle type oil sample valve can be used for simply and conveniently taking oil samples, and the utility model also provides a transformer.

Description

Needle type oil sample valve and transformer

Technical Field

The utility model belongs to the technical field of transformers, and particularly relates to a needle type oil sample valve and a transformer comprising the needle type oil sample valve.

Background

With the progress of the power industry, the power equipment is miniaturized, refined, portable and highly reliable, the volume reduction of the transformer is a development trend, and the design of the transformer is more important for humanization of maintenance operation. Among them, detection and analysis of transformer oil is an important and indispensable ring for transformer protection. And detecting whether the faults or problems of the transformer occur or not, and extracting an oil sample in the transformer body to carry out chromatographic analysis so as to analyze whether the faults of the transformer occur or not and what type of faults occur. However, along with the trend of miniaturization of the body of the transformer, the position limitation of the oil sample valve is increased, and particularly, the wide-range popularization of the octagonal oil tank is realized, so that the position of the oil sample valve is in conflict with the position of the peripheral components, and therefore, the oil sample taking space is small, and the operation difficulty is high.

Disclosure of Invention

The utility model aims to solve the technical problems in the prior art, provides a needle type oil sample valve, can simply and conveniently take an oil sample from a transformer oil tank, and also provides a transformer.

The needle type oil sample valve is connected to an oil tank of a transformer and comprises an oil taking component and a plug seat, wherein one end face of the plug seat is a plane perpendicular to the axis of the plug seat and is used for being connected with the oil taking component, and the other end face of the plug seat is an inclined plane not perpendicular to the axis of the plug seat and is used for being connected with the oil tank of the transformer.

Preferably, the middle part of the plug seat is provided with an oil taking hole, and the oil taking hole penetrates through the plug seat along the axis of the plug seat; the oil extraction assembly extracts oil from an oil tank of the transformer through the oil extraction hole, a sealing groove is formed in the plane of the plug seat, the sealing groove is arranged around the oil extraction hole, and a sealing gasket is embedded in the sealing groove.

Preferably, the angle range of the included angle alpha between the inclined surface of the plug seat and the axis of the plug seat is 0 degrees less than alpha less than 45 degrees.

Preferably, the plug seat is of a cylindrical structure.

The utility model provides a transformer, which comprises an oil tank body and the needle type oil sample valve, wherein a connecting hole is formed in the side face of the oil tank body, and the needle type oil sample valve is connected with the connecting hole through one end of a plug seat with an inclined plane.

Preferably, a fixed included angle exists between the axis of the connecting hole and the side wall of the oil tank body where the connecting hole is located, and the included angle between the inclined plane and the axis of the plug seat is consistent with the fixed included angle, so that the inclined plane is parallel to the side wall of the oil tank body.

Preferably, the end part of the plug seat with the inclined surface penetrates into the connecting hole and extends out of the inner wall of the oil tank body by a set distance.

Preferably, the oil tank body is an octagonal oil tank.

The needle type oil sample valve is characterized in that one end face of the plug seat is a plane perpendicular to the axis of the plug seat, the other end face of the plug seat is an inclined plane which is not perpendicular to the axis of the plug seat, the oil taking assembly is connected with the plug seat through the plane, and the oil tank of the transformer is connected with the plug seat through the inclined plane. Compared with a normal vertical connection mode, the inclined mode shortens the extension length of the needle type oil sample valve outside the oil tank, namely, the space required in the width direction is smaller, so that the arrangement position of the needle type oil sample valve is limited to a lower degree, the needle type oil sample valve is not easy to collide with the peripheral components, and the oil sample can be taken simply and conveniently. And the oil taking direction of the oil taking component extends outwards along the axis of the plug seat, so that along with the oblique arrangement of the plug seat, the oil taking direction is oblique, more spaces can be reserved for oil taking operation, and the oil taking difficulty is further reduced.

Drawings

Fig. 1 is a schematic structural view of a needle type oil sample valve in embodiment 1 of the present utility model.

In the figure: 1. a plug seat; 11. a plane; 12. an inclined plane; 13. an oil taking hole; 2. a sealing gasket; 3. an oil extraction assembly; 4. an oil tank body; 41. and a connection hole.

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent, and the embodiments described in detail, but not necessarily all, in connection with the accompanying drawings. 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 fall within the scope of the utility model.

In the description of the present utility model, it should be noted that, the terms "upper," "lower," and the like indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, and are merely for convenience and simplicity of description, and do not indicate or imply that the apparatus or element in question must be provided with a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "configured," "mounted," "secured," and the like are to be construed broadly and may be either fixedly connected or detachably connected, or integrally connected, for example; 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 skilled in the art according to the specific circumstances.

Example 1

As shown in fig. 1, the needle-type oil sample valve of this embodiment is connected to an oil tank of a transformer, and comprises an oil extraction assembly 3 and a plug seat 1, wherein one end surface of the plug seat 1 is a plane 11 perpendicular to the axis of the plug seat and is used for connecting the oil extraction assembly 3, and the other end surface of the plug seat 1 is an inclined surface 12 not perpendicular to the axis of the plug seat and is used for connecting the oil tank of the transformer. In this embodiment, the oil-taking component 3 is a conventional needle-type sampling valve body in the market, so the structure and principle thereof will not be described herein.

The needle type oil sample valves are all vertically connected to the side wall of the oil tank, and the needle type oil sample valves of the embodiment are obliquely arranged through the inclined plane 12. I.e. the needle valve in this embodiment is inclined to the side wall of the tank.

Compared with a normal vertical connection mode, the inclined mode shortens the extension length of the needle type oil sample valve outside the oil tank, namely, the space required in the width direction is smaller, so that the arrangement position of the needle type oil sample valve is limited to a lower degree, the needle type oil sample valve is not easy to collide with the peripheral components, and the oil sample can be taken simply and conveniently.

And the oil taking direction of the oil taking component 3 extends outwards along the axis of the plug seat 1, so that along with the oblique arrangement of the plug seat 1, the oil taking direction is also oblique, the manual operation space of an oil taking sample is enlarged, more space can be provided for oil taking operation, and the oil taking difficulty is further reduced.

The needle type oil sample valve of the embodiment has the advantages of simple structure, easiness in processing, low cost, convenience in disassembly and assembly, convenience in user operation and the like in structural aspect.

The needle-type oil sample valve effectively solves the problem of extracting the oil sample of the transformer when the space of the wall of the transformer tank is limited. And it is because the needle oil appearance valve of this embodiment needs the space less, consequently can be used to more compact transformer tank structure, be favorable to the development of equipment miniaturization.

In this embodiment, an oil taking hole 13 is provided in the middle of the plug seat 1, and the oil taking hole 13 penetrates through the plug seat 1 along the axis of the plug seat 1. The oil extraction assembly 3 extracts oil from the oil tank of the transformer through the oil extraction hole 13. In order to ensure tightness, a sealing groove is formed in the plane 11 of the plug seat 1 and surrounds the oil taking hole 13, and a sealing gasket 2 is embedded in the sealing groove, so that omnibearing sealing is provided in the circumferential direction of the oil taking hole 13.

In this embodiment, the plug seat 1 is made of 50 round steel Q235B, and can be internally threaded during production, the oil taking component 3 can be connected with the plug seat 1 through the internal threads, and the plug seat 1 and the tank wall of the oil tank can be welded and connected. The gasket 2 is rectangular rubber with a thickness of 5mm. The grooving depth of seal groove is 3mm.

In this embodiment, the angle α between the inclined surface 12 of the plug seat 1 and the axis of the plug seat 1 is in the range of 0 ° < α < 45 °. The machining angle can be flexibly selected according to the angle of the wall of the oil tank and the external space.

In this embodiment, the plug holder 1 has a cylindrical structure, and an outer diameter of 51mm.

Example 2

The transformer of this embodiment, in particular an oil immersed transformer, can be used in a plurality of places such as power stations and transformer substations, and comprises an oil tank body 4, and further comprises a needle type oil sample valve in embodiment 1, wherein a connecting hole 41 is formed in the side surface of the oil tank body 4, and the needle type oil sample valve is connected with the connecting hole 41 through one end of the plug seat 1 with an inclined surface 12.

The transformer of this embodiment, because needle type oil appearance valve is put the structure to one side, consequently occupy the oil tank external space less, can not take place to interfere with other external components, can realize simple and easy convenient oil sampling operation again. And because the occupied external space is small, the oil tank and other external components can be distributed more compactly, and the miniaturization development of equipment is facilitated.

The oil tank body 4 of the transformer in the embodiment can be an octagonal transformer oil tank of 110KV, and can also be an oil tank of other specifications and shapes.

In this embodiment, a fixed included angle exists between the axis of the connecting hole 41 and the side wall of the oil tank body 4 where the connecting hole 41 is located, and the included angle α between the inclined plane 12 and the axis of the plug seat 1 is consistent with the fixed included angle, so that the inclined plane 12 can be parallel to the side wall of the oil tank body 4, and the plug seat 1 can conveniently penetrate into the connecting hole 41.

In this embodiment, the diameter of the plug seat 1 is 51mm, the aperture of the connecting hole 41 is also 51mm, and the plug seat 1 is fixed by welding after penetrating into the connecting hole 41.

In this embodiment, the end portion of the plug seat 1 with the inclined surface 12 penetrates into the connecting hole 41 and protrudes a set distance from the inner wall of the oil tank body 4. In this embodiment, the set distance is 6mm.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.

Claims (8)

1. The needle type oil sample valve is connected to an oil tank of a transformer, and is characterized in that: comprises an oil taking component (3) and a plug seat (1),

one end face of the plug seat (1) is a plane (11) perpendicular to the axis of the plug seat and is used for being connected with the oil taking component (3), and the other end face of the plug seat (1) is an inclined plane (12) not perpendicular to the axis of the plug seat and is used for being connected with an oil tank of a transformer.

2. The needle oil sample valve of claim 1 wherein: an oil taking hole (13) is formed in the middle of the plug seat (1), and the oil taking hole (13) penetrates through the plug seat (1) along the axis of the plug seat (1); the oil taking component (3) takes oil from an oil tank of the transformer through an oil taking hole (13),

a sealing groove is formed in the plane (11) of the plug seat (1), the sealing groove is arranged around the oil taking hole (13), and a sealing gasket (2) is embedded in the sealing groove.

3. The needle oil sample valve of claim 1 wherein: the angle range of the included angle alpha between the inclined surface (12) of the plug seat (1) and the axis of the plug seat (1) is 0 degrees less than alpha less than 45 degrees.

4. The needle oil sample valve of claim 1 wherein: the plug seat (1) is of a cylindrical structure.

5. A transformer comprising an oil tank body (4), characterized in that: further comprising the needle oil sample valve according to any one of claims 1 to 4,

the side of the oil tank body (4) is provided with a connecting hole (41), and the needle type oil sample valve is connected with the connecting hole (41) through one end of the plug seat (1) with an inclined plane (12).

6. The transformer according to claim 5, wherein: a fixed included angle exists between the axis of the connecting hole (41) and the side wall of the oil tank body (4) where the connecting hole (41) is positioned,

and the included angle between the inclined plane (12) and the axis of the plug seat (1) is consistent with the fixed included angle, so that the inclined plane (12) is parallel to the side wall of the oil tank body (4).

7. The transformer according to claim 5, wherein: the end part of the plug seat (1) with the inclined surface (12) penetrates into the connecting hole (41) and stretches out by a set distance relative to the inner wall of the oil tank body (4).

8. The transformer according to claim 5, wherein: the oil tank body (4) is an octagonal oil tank.