CN219642639U - Oil-saving oil tank positioning structure of oil immersed transformer - Google Patents

Abstract

The utility model discloses an oil-saving oil tank positioning structure of an oil-immersed transformer in the technical field of power equipment, which comprises an oil tank bottom and a transformer body arranged on the oil tank bottom, wherein the oil tank bottom adopts a T-shaped structure, and two side walls of the short shaft direction of the oil tank bottom are concave inwards towards the center; the lower clamping piece is fixed at the lower part of the transformer body, the end surface of the lower clamping piece forms a U shape, the length of the lower clamping piece is consistent with the length of the inner cavity of the bottom of the oil tank, and the two vertical edges of the lower clamping piece are fixedly connected by a fastening screw; when the transformer body is placed at the bottom of the oil tank, two ends of the fastening screw are matched and positioned with the inner wall of the bottom of the oil tank in the short axis direction, and two ends of the lower clamping piece are matched and positioned with the inner wall of the bottom of the oil tank in the long axis direction. The transformer body is ensured not to displace in the transportation and movement process of the transformer, the tank bottom of the oil tank is compact in structure, the vacant gap is small, the unnecessary occupied space is avoided, the consumption of insulating oil is saved, and the product cost is reduced on the premise of ensuring the insulation and cooling performance of the transformer.

Description

Oil-saving oil tank positioning structure of oil immersed transformer

Technical Field

The utility model belongs to the technical field of power equipment, and particularly relates to a positioning structure of an oil-saving oil tank of an oil-immersed transformer.

Background

As is well known, for a rectangular oil tank of a 10 kV-level oil immersed distribution transformer, the tank bottom is generally of a horizontal structure, the tank bottom is consistent with the tank body up and down, and the tank bottom is provided with a body positioning nail for positioning the transformer body. The oil tank bottom of the structure is consistent with the tank body up and down, so that the consumption of the transformer oil is high, the running cost of the transformer is increased, the product market competition is not facilitated, and the cost waste is caused for electricity utilization units. Publication No. 107068342a publication No. 2017-08-18 discloses an oil immersed transformer tank and a transformer using the oil tank, the transformer comprises a body and an oil tank, the oil tank comprises a tank body and a tank cover, the tank cover and the tank body are provided with interconnected connection structures, the connection structures comprise tank body plug holes or tank body plug grooves formed in the tank body and tank cover plug holes or tank cover plug grooves formed in the tank cover, the connection structures further comprise lock columns which can be simultaneously inserted into the tank body plug holes or plug grooves and the tank cover plug holes or plug grooves when the tank cover is covered on the tank body, and the axial direction of the plug holes or the plug grooves is parallel or inclined with the horizontal plane. The transformer has the advantages that the connecting structure of the box body and the box cover is the plug holes or the plug grooves, and the box body and the box cover are relatively locked by simultaneously penetrating the lock posts into the two plug holes or the plug grooves. The screw bolt connecting device solves the problems that the traditional screw bolt connection has the defects of a large number of screw bolts, complex processing of screw holes, complex dismounting operation, higher manufacturing and maintenance cost, high requirement on installation precision and the like. The tank bottom structure is also rectangular, and the problems of body positioning and large transformer oil consumption exist.

Therefore, how to design an oil immersed transformer tank which is stable and reliable in positioning and reduces the consumption of transformer oil needs to be solved.

Disclosure of Invention

The utility model aims to provide a positioning structure of an oil-saving oil tank of an oil-immersed transformer, which aims at the oil tank of the oil-immersed transformer, has accurate and reliable positioning and convenient installation, can reduce the consumption of transformer oil, reduce the cost of products and enhance the market competitiveness of the products.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides an oil-saving oil tank location structure of oil-immersed transformer, has the tank bottom of the tank and with place the transformer body at the tank bottom of the tank, its characterized in that: the bottom of the oil tank is of a T-shaped structure, and two side walls of the bottom of the oil tank in the short axis direction are concave inwards towards the center; the lower clamping piece is fixed at the lower part of the transformer body, the end surface of the lower clamping piece forms a U shape, the length of the lower clamping piece is consistent with the length of the inner cavity of the bottom of the oil tank, and the two vertical edges of the lower clamping piece are fixedly connected by a fastening screw; when the transformer body is placed at the bottom of the oil tank, two ends of the fastening screw are matched and positioned with the inner wall of the bottom of the oil tank in the short axis direction, two ends of the lower clamping piece are matched and positioned with the inner wall of the bottom of the oil tank in the long axis direction, and the bottom plane of the lower clamping piece is matched with the bottom surface of the bottom of the oil tank; and bottom foot channel steel is arranged below the bottom wall of the oil tank bottom.

Furthermore, the bottom of the oil tank is formed by welding a steel plate after bending.

Furthermore, the lower clamping piece is formed by bending two steel plates to form an L-shaped angle plate and connecting the L-shaped angle plate through a fastening screw.

Compared with the prior art, the utility model has the beneficial effects that: the oil tank bottom adopts T type structure, and the oil tank bottom is seamless welded after the steel sheet is buckled, forms the wide T type structure of narrow down in minor axis direction, and oil tank bottom compact structure, when the oil tank bottom was placed to the lower part of transformer body, the vacant clearance is little, unnecessary occupation space, under guaranteeing transformer insulation, the cooling performance prerequisite, practice thrift the quantity of insulating oil, like the 35kg of volume 2500kVA transformer oil-saving, the volume 2000kVA transformer oil-saving 32kg, reduction in production cost. When the transformer body is placed in the oil tank bottom, two ends of the fastening screw on the lower clamping piece are matched and positioned with the inner wall of the oil tank bottom in the short axis direction, two ends of the lower clamping piece are matched and positioned with the inner wall of the oil tank bottom in the long axis direction, and the bottom surface of the oil tank bottom supports the whole transformer body through the lower clamping piece. The transformer positioning device is convenient to install, stable and reliable in positioning and capable of ensuring that the transformer body is not displaced in the transportation and movement process of the transformer. The scheme of the utility model has remarkable practicability and is easy to be accepted and popularized by the market.

Drawings

The following further description of the utility model is provided in connection with 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 the utility model and together with the embodiments of the utility model, not to limit the utility model.

FIG. 1 is a schematic diagram of a prior art rectangular structure fuel tank;

FIG. 2 is a schematic view of section B-B of FIG. 1;

FIG. 3 is a schematic diagram of the positioning structure of the oil-saving tank of the oil-immersed transformer;

FIG. 4 is a schematic cross-sectional view of the short axis of FIG. 3;

FIG. 5 is a schematic view of the structure of the lower clip member;

fig. 6 is a schematic cross-sectional view of fig. 3 along the long axis.

Wherein: 1. the transformer comprises an oil tank bottom, a 1.1 existing oil tank bottom, a 2 tank bottom foot channel steel, a 3 lower clamping piece, a 3.1 transformer body foot pad, a 3.2 right clamping piece, a 3.3 left clamping piece, a 4 fastening screw, a 4.1 positioning pin and a 5 transformer body.

Detailed Description

As shown in fig. 1 and 2, in the rectangular structure oil tank positioning structure in the prior art, the existing oil tank bottom 1.1 is a rectangular tank body, the tank bottom is fixed on the tank bottom foot channel steel 2, the tank bottom is internally provided with a transformer body foot pad 3.1, and the transformer body is connected through a tank bottom positioning pin 4.1 and positioned through the tank bottom positioning pin 4.1. Because the transformer body is not of a regular rectangular structure, the gap space between the transformer body and the bottom of the oil tank is larger, so that the transformer oil consumption is large, and the operation cost of the transformer is increased.

As shown in fig. 3, 4, 5 and 6, the oil-saving oil tank positioning structure of the oil-immersed transformer is characterized in that the oil tank is provided with an oil tank bottom 1 for placing and fixing a transformer body 5, the oil tank bottom 1 adopts a T-shaped structure, and two side walls of the short axis direction of the oil tank bottom are concaved inwards towards the center, so that the oil tank bottom forms a T-shaped structure with wide bottom and narrow bottom in the short axis direction, the rectangular structure of the traditional transformer is changed, the consumption of insulating oil of the transformer is reduced, and the product cost is reduced. The two sides of the long shaft of the bottom of the oil tank are provided with lower clamping pieces 3, the lower clamping pieces shown in fig. 3 are formed by a left clamping piece 3.3 and a right clamping piece 3.2 which are bent by steel plates to form an L shape, the left clamping piece 3.3 and the right clamping piece 3.2 are connected through fastening screws to form a U-shaped structure, and the length of the lower clamping piece 3 is consistent with the length of the inner cavity of the bottom of the oil tank. When the transformer body is placed at the bottom of the oil tank, the two end parts of the fastening screw are matched and positioned with the inner wall of the bottom of the oil tank in the short axis direction; the two ends of the lower clamping piece 3 are matched and positioned with the inner wall of the oil tank bottom in the long axis direction, and the bottom plane of the lower clamping piece is matched with the bottom surface of the oil tank bottom. This location structure makes the transformer body place when in the oil tank bottom of the case, and the cooperation position is gapless, guarantees that the body is not displaced at the transformer transportation removal in-process, has changed the structure that traditional transformer adopted the location of body locating nail, has reduced the location degree of difficulty and location accuracy, has improved operation manufacturability. The oil tank bottom 1 is formed by welding a steel plate in a seamless manner after bending, so that the strength is increased, the deformation is reduced, the volume of the tank bottom is reduced, the tightness of the tank bottom is ensured, and the oil leakage of the tank bottom is prevented. The tank bottom foot channel steel 2 is arranged below the bottom wall of the tank bottom of the oil tank, and is convenient to install and high in strength.

Finally, it should be noted that: the above is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that the present utility model is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (3)

1. The utility model provides an oil-saving oil tank location structure of oil-immersed transformer, has the tank bottom of the tank and with place the transformer body at the tank bottom of the tank, its characterized in that: the bottom of the oil tank is of a T-shaped structure, and two side walls of the bottom of the oil tank in the short axis direction are concave inwards towards the center; the lower clamping piece is fixed at the lower part of the transformer body, the end face of the lower clamping piece is U-shaped, the length of the lower clamping piece is consistent with the length of the inner cavity of the bottom of the oil tank, and the two vertical edges of the lower clamping piece are fixedly connected by a fastening screw; when the transformer body is placed at the bottom of the oil tank, two ends of the fastening screw are matched and positioned with the inner wall of the bottom of the oil tank in the short axis direction, two ends of the lower clamping piece are matched and positioned with the inner wall of the bottom of the oil tank in the long axis direction, and the bottom plane of the lower clamping piece is matched with the bottom surface of the bottom of the oil tank; and bottom foot channel steel is arranged below the bottom wall of the oil tank bottom.

2. The oil-saving oil tank positioning structure of an oil immersed transformer according to claim 1, wherein: the bottom of the oil tank is formed by seamless welding after bending of a steel plate.

3. The oil-saving oil tank positioning structure of an oil immersed transformer according to claim 1, wherein: the lower clamping piece is formed by bending two steel plates to form an L-shaped angle plate and connecting the L-shaped angle plate through a fastening screw.