CN215988412U - Oil discharge and exhaust device for external pipeline of transformer - Google Patents

Abstract

The utility model relates to an oil discharge and exhaust device for an external pipeline of a transformer, which comprises: the transformer oil drainage device comprises a connecting base, wherein the connecting base is of a cylindrical structure with a cavity, an oil drainage exhaust hole is formed in the upper position of the side wall of the connecting base, the oil drainage exhaust hole is communicated with the cavity of the connecting base, the lower portion of the connecting base is connected with an external pipeline of a transformer through a sealing pipe thread structure, and an oil drainage exhaust bolt is connected with an upper cavity of the connecting base through the sealing pipe thread structure. When the oil discharge and exhaust bolt is screwed down, the oil discharge and exhaust hole is blocked, so that the oil discharge and exhaust device is hermetically connected with the external pipeline of the transformer, and the problem of oil gas leakage is avoided; when the oil discharge and exhaust bolt is loosened, the oil discharge and exhaust hole is made, the cavity connected with the base and the oil discharge and exhaust hole form a passage, and waste oil and waste gas accumulated in the external pipeline of the transformer can be conveniently discharged. The utility model reduces the occupied space of the device, improves the sealing reliability and is more convenient for oil discharge and exhaust.

Description

Oil discharge and exhaust device for external pipeline of transformer

Technical Field

The utility model belongs to the technical field of transformer manufacturing, and particularly relates to an oil discharge and exhaust device for an external pipeline of a transformer, which is used for sealing the external pipeline of transformer oil circuit circulation and discharging oil and exhaust.

Background

The transformer external pipeline is the important part of transformer oil circuit circulation system, and the external pipeline includes: the external pipeline body is connected with the oil storage cabinet, the cooling system, the lifting seat oil circuit circulating part and the on-load switch oil circuit circulating part. The external pipeline not only ensures the required oil circulation function, but also needs to meet the requirement that the exhaust emission and residual oil emission of the external pipeline can be realized at a specific position, thereby ensuring the normal process implementation and operation of the transformer.

The oil discharge and exhaust device of the external pipeline of the transformer needs to be communicated with an external oil circuit system, and the requirements on the sealing property and the pressure bearing property of the oil discharge and exhaust device are high. The common oil discharging and exhausting device is a flange type and a thread matching type, the flange type oil discharging and exhausting device has larger volume and larger occupied space, and is difficult to implement on a smaller pipe diameter; the threaded oil discharge and exhaust device is usually sealed by a sealing element, and the sealing performance is easy to lose after multiple assembling.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an oil discharging and exhausting device for an external pipeline of a transformer, which adopts a structure that a sealing pipe is in threaded fit with a conical surface for sealing, so that the utilization of an assembly space is reduced, the sealing performance of the device is enhanced, and the operation simplicity of the oil discharging and exhausting device is improved. The technical scheme adopted by the utility model is as follows:

the utility model provides a transformer external pipeline oil extraction exhaust apparatus, includes: the transformer oil drainage device comprises a connection base, wherein the connection base is of a cylindrical structure with a cavity, an oil drainage exhaust hole is formed in the upper position of the side wall of the connection base, the oil drainage exhaust hole is communicated with the cavity of the connection base, the lower portion of the connection base and the external pipeline of the transformer are connected and assembled through a sealing pipe thread structure, and an oil drainage exhaust bolt is connected and assembled with the upper cavity of the connection base through the sealing pipe thread structure. When the oil discharge and exhaust bolt is screwed down, the oil discharge and exhaust hole is blocked, so that the oil discharge and exhaust device is hermetically connected with the external pipeline of the transformer, and the problem of oil gas leakage is avoided; when the oil discharge and exhaust bolt is loosened, the oil discharge and exhaust hole is made, the cavity connected with the base and the oil discharge and exhaust hole form a passage, and waste oil and waste gas accumulated in the external pipeline of the transformer can be conveniently discharged.

The utility model has the beneficial effects that:

the connection base and the exhaust bolt are assembled through threads, occupied space of the device is reduced, the device can be assembled on a full-series pipeline of the transformer, and applicability and operation simplicity of the device are improved. The sealing structure of the ball-like valve improves the sealing reliability, reduces the risk of oil gas leakage in the use process of the oil discharge and exhaust device, and ensures the operation and maintenance of the transformer and the quality of maintenance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are specific embodiments of the utility model, and that other drawings within the scope of the present application can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a sectional view showing a sealing operation state of an oil drain and gas exhaust apparatus according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a drain vent bolt of an embodiment of the present invention;

FIG. 3 is a top view of the oil drain and drain apparatus of an embodiment of the present invention;

fig. 4 is a sectional view of the drain and drain apparatus of the embodiment of the present invention in a drain and drain state;

in the figure: 1 is external thread sealed tube, 2 is internal thread sealed tube, 3 is the oil extraction exhaust bolt, and 4 is the oil extraction exhaust hole.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

Fig. 1 is a cross-sectional view of the oil drain and gas exhaust device according to the embodiment of the present invention in a sealing operation state. The utility model provides a transformer external pipeline oil extraction exhaust apparatus, includes: the connecting base is of a cylindrical structure with a cavity, the lower portion of the connecting base and the external pipeline of the transformer are connected and assembled through a sealing pipe thread structure, and the oil discharge and exhaust bolt 3 is connected and assembled with the upper cavity of the connecting base through the sealing pipe thread structure. The connection base constitute by integrated into one piece's external screw thread sealed tube 1 and internal screw thread sealed tube 2, the external diameter of internal screw thread sealed tube 2 is greater than external screw thread sealed tube 1's external diameter, internal screw thread sealed tube 2's cavity diameter is greater than external screw thread sealed tube 1's cavity diameter, external screw thread sealed tube 1's peripheral surface is provided with the external screw thread that suits with the connecting hole internal thread of the outside pipeline of transformer, external screw thread sealed tube 1 realizes the sealing connection with the outside pipeline of transformer through leakproofness pipe thread structure. Be provided with the internal thread in the cavity of internal thread sealed tube 2, the peripheral surface of oil extraction exhaust bolt 3 is provided with the external screw thread that suits with the internal thread of internal thread sealed tube 2, and oil extraction exhaust bolt 3 realizes through leakproofness pipe thread structure with internal thread sealed tube 2's sealing connection. Oil discharge hole 4 is seted up to one side position under the heading of internal thread sealed tube 2, oil discharge hole 4 link up with internal thread sealed tube 2's cavity, the diameter of oil discharge hole 4 is the same with external thread sealed tube 1's cavity diameter, screw up when oil discharge exhaust bolt 3, oil discharge exhaust bolt 3's lower part is sealed with external thread sealed tube 1's cavity laminating, and simultaneously, oil discharge hole 4 is plugged up to oil discharge exhaust bolt 3, make transformer external pipeline and oil extraction exhaust apparatus sealing connection, air leakage or oil leak problem need not appear.

Fig. 2 is a sectional view of the drain bolt according to the embodiment of the present invention. The external thread position of the outer peripheral surface of the oil drain exhaust bolt 3 is set to be a convex ring structure, so that the sealing effect of connection between the oil drain exhaust bolt 3 and the external thread sealing pipe 1 is better. The lower tip of oil extraction exhaust bolt 3 sets up into the conical surface structure for oil extraction exhaust bolt 3 can be with the laminating of the cavity upper portion of external screw thread sealing tube 1 tighter, make the sealed effect of being connected between oil extraction exhaust bolt 3 and the external screw thread sealing tube 1 better.

Fig. 3 is a plan view of the oil drain and gas exhaust device according to the embodiment of the present invention. The periphery of the upper part of the oil drainage and exhaust bolt 3 is provided with a convex annular structure with a square cross section, and the oil drainage and exhaust bolt 3 can be more conveniently mounted and screwed to realize sealing by utilizing the convex annular structure with the square cross section through a fastening tool, or the oil drainage and exhaust bolt 3 can be detached and loosened to realize oil drainage and exhaust. The periphery of the upper part of the internal thread sealing pipe 2 is provided with a convex ring structure with a hexagonal section, and the hexagonal convex ring structure can be used for more conveniently installing and screwing the connecting base or disassembling the connecting base from an external pipeline by a fastening tool.

The oil drain and exhaust bolt comprises an external thread sealing pipe 1, an internal thread sealing pipe 2 and an oil drain and exhaust bolt 3, and is made of stainless steel.

Fig. 4 is a sectional view of the exhaust and oil discharge device according to the embodiment of the present invention in an exhaust and oil discharge state. When waste oil and waste gas in an external pipeline of the transformer need to be discharged, the oil and gas discharging bolts 3 can be loosened through a fastening tool to discharge oil and gas, and the lower end parts of the oil and gas discharging bolts 3 are gradually far away from the upper part of the cavity of the external thread sealing pipe 1 along with the upward movement of the rotation of the oil and gas discharging bolts 3; along with the continuous rotatory upward movement of oil extraction exhaust bolt 3, oil extraction exhaust bolt 3 lower tip keeps away from the oil extraction exhaust hole 4 of internal thread sealed tube 2 gradually, and when oil extraction exhaust bolt 3 upwards rotatory removal to a take the altitude, the cavity of external thread sealed tube 1, the cavity of internal thread sealed tube 2 and oil extraction exhaust hole 4 form a route, can conveniently discharge the waste oil waste gas that accumulates in the transformer outside pipeline through this route. After the oil discharge and exhaust work is finished, the oil discharge and exhaust bolt 3 can be screwed down through a fastening tool, so that the sealing between the external pipeline of the transformer and the oil discharge and exhaust device is conveniently realized, and the problems of oil leakage and air leakage are solved.

Finally, it is to be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, and the scope of the present invention is not limited thereto. Those skilled in the art will understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims (10)

1. The utility model provides a transformer external pipeline oil extraction exhaust apparatus which characterized in that includes: the transformer external pipeline connecting device comprises a connecting base, wherein the connecting base is of a cylindrical structure with a cavity, an oil discharge exhaust hole (4) is formed in the upper position of the side wall of the connecting base, the oil discharge exhaust hole (4) is communicated with the cavity of the connecting base, the lower portion of the connecting base and a transformer external pipeline are connected and assembled through a sealing pipe thread structure, and an oil discharge exhaust bolt (3) is connected and assembled with an upper cavity of the connecting base through the sealing pipe thread structure.

2. The oil and gas discharge device for the external pipeline of the transformer as claimed in claim 1, wherein the connecting base is composed of an external thread sealing pipe (1) and an internal thread sealing pipe (2) which are integrally formed.

3. The oil and gas discharge device for the external pipeline of the transformer as claimed in claim 2, wherein the external diameter of the internally threaded sealing pipe (2) is larger than that of the externally threaded sealing pipe (1), and the cavity diameter of the internally threaded sealing pipe (2) is larger than that of the externally threaded sealing pipe (1).

4. An oil and gas discharge device for an external pipeline of a transformer as claimed in claim 3, wherein the external thread sealing pipe (1) is provided with an external thread corresponding to the internal thread of the connection hole of the external pipeline of the transformer on the outer peripheral surface, the internal thread sealing pipe (2) is provided with an internal thread in the cavity, and the oil and gas discharge bolt (3) is provided with an external thread corresponding to the internal thread of the internal thread sealing pipe (2) on the outer peripheral surface.

5. The oil and gas discharging device for the external pipeline of the transformer as claimed in claim 4, wherein an oil and gas discharging hole (4) is formed in a position, which is lower than one side of the internal thread sealing pipe (2), the oil and gas discharging hole (4) is communicated with the cavity of the internal thread sealing pipe (2), and the diameter of the oil and gas discharging hole (4) is the same as that of the cavity of the external thread sealing pipe (1).

6. An oil and gas discharge device for external pipelines of transformers according to claim 5, characterized in that the external thread part of the external surface of the oil and gas discharge bolt (3) is arranged in a convex ring structure.

7. The oil drain and exhaust device for the external pipeline of the transformer as claimed in claim 6, wherein the lower end part of the oil drain and exhaust bolt (3) is provided with a conical surface structure.

8. The oil drain and exhaust device for the external pipeline of the transformer as claimed in claim 7, wherein the upper periphery of the oil drain and exhaust bolt (3) is provided with a convex annular structure with a square section.

9. The oil and gas discharge device for the external pipeline of the transformer as claimed in claim 2, wherein the upper periphery of the internally threaded sealing tube (2) is provided with a convex annular structure with a hexagonal section.

10. The oil drain and exhaust device of the external pipeline of the transformer as claimed in any one of claims 2-9, wherein the external thread sealing tube (1), the internal thread sealing tube (2) and the oil drain and exhaust bolt (3) are made of stainless steel.

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