CN219759365U - Mounting structure of built-in current transformer of transformer oil tank - Google Patents

Abstract

The utility model discloses a mounting structure of a built-in current transformer of a transformer oil tank, which comprises a standing timber support and a transverse support; the upper end of the standing timber support is fixedly connected with the upper iron core clamping piece, and the lower end of the standing timber support is fixedly connected with the lower iron core clamping piece; at least two transverse brackets are fixed on the standing tree bracket, and a current transformer is arranged between the two transverse brackets. The stray loss caused by magnetic leakage on the current transformer can be effectively reduced, the influence of larger magnetic leakage on the measurement accuracy of the current transformer under special conditions is reduced, and the measurement accuracy of the current transformer and the safety of the whole use are ensured.

Description

Mounting structure of built-in current transformer of transformer oil tank

Technical Field

The utility model belongs to the technical field of transformer equipment, and particularly relates to a mounting structure of a built-in current transformer of a transformer oil tank.

Background

In recent years, with the implementation of new energy efficiency standards, transformer loss performance requirements are becoming higher and higher. In transformer equipment, the control of spurious losses is an important direction of investigation for transformer design.

In order to ensure safe and economical operation of the power system, the operation condition of the power equipment must be monitored and measured, and therefore, a current transformer needs to be installed on a transformer for protection, measurement and other purposes. The existing built-in current transformer is generally installed at the upper end of a main column of an iron core in a transformer oil tank, and the position is located on a main magnetic leakage channel, so that stray loss can be generated. And the generated larger magnetic flux leakage has an influence on the measurement accuracy of the current transformer.

Disclosure of Invention

The utility model provides a mounting structure of a built-in current transformer of a transformer oil tank, which is used for avoiding the current transformer in the transformer oil tank being positioned in a main magnetic leakage channel of a transformer.

In order to achieve the purpose, the installation structure of the built-in current transformer of the transformer oil tank comprises a standing timber support and a transverse support; the upper end of the standing timber support is fixedly connected with the upper iron core clamping piece, and the lower end of the standing timber support is fixedly connected with the lower iron core clamping piece; at least two transverse brackets are fixed on the standing tree bracket, and a current transformer is arranged between the two transverse brackets.

Further, the supporting plates are arranged at the two ends of the current transformer.

Further, an insulating tube is arranged in the center of the current transformer.

Further, the standing timber support is arranged on the outer side of the side column and is positioned close to the oil tank in the long axis direction of the transformer.

Further, a cushion block is arranged between the transverse support and the current transformer.

Further, through holes are formed in the cushion blocks.

Further, the transverse brackets are arranged horizontally.

Further, the upper end of the standing timber support is fixedly connected with the upper clamping piece of the iron core through a fastener, and the lower end of the standing timber support is fixedly connected with the lower clamping piece of the iron core through a fastener.

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

the installation structure of the built-in current transformer of the transformer oil tank can effectively reduce stray loss caused by magnetic leakage on the current transformer, reduce the influence of larger magnetic leakage on the measurement accuracy of the current transformer under special conditions, and ensure the measurement accuracy and the integral use safety of the current transformer.

Further, the standing timber support is arranged on the outer side of the side column and is positioned at a position close to the oil tank in the long axis direction of the transformer, so that the installation space is saved.

Furthermore, a cushion block is arranged between the transverse support and the current transformer, so that the current transformer is protected, and the working stability of the current transformer is improved.

Drawings

FIG. 1 is a front view of a front current transformer;

fig. 2 is a side view of the front current transformer.

In the accompanying drawings: 1. a standing wood bracket; 2. a current transformer; 3. a transverse bracket; 4. an insulating tube; 5. a supporting plate; 6. a fastener; 7. a clamping piece on the iron core; 8. a lower iron core clamp; 9. an oil tank; 10. and a lead wire, 11, and a cushion block.

Detailed Description

The utility model will be described in detail below with reference to the drawings and the detailed description.

In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. 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, shall fall within the scope of the utility model.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like as used herein refer to an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1 and 2, a mounting structure of a built-in current transformer of a transformer oil tank includes two vertical wooden supports 1, two lateral supports 3, an insulating tube 4, a pallet 5 and a lead 10 which are vertically arranged.

The two standing timber supports 1 are arranged on the outer sides of the side columns and are positioned at positions close to the oil tank 9 in the long axis direction of the transformer, the upper ends of the two standing timber supports 1 are fixedly connected with the upper iron core clamping pieces 7 through fasteners 6, and the lower ends of the two standing timber supports are fixedly connected with the lower iron core clamping pieces 8 through fasteners 6. Two horizontal supports 3 which are horizontally arranged are fixed at the lower parts of the two standing timber supports 1, a current transformer 2 is arranged between the two horizontal supports 3, and an insulating tube 4 is arranged at the center of the current transformer. The lead 10 passes through the insulating tube 4 and is connected to the transformer bushing for extraction. A cushion block 11 for protecting the current transformer is arranged between the transverse bracket 3 and the current transformer 2. The two ends of the current transformer 2 are provided with supporting plates 5.

Wherein, the standing timber support 1, the transverse support 3, the insulating tube 4, the supporting plate 5, the fastening piece 6 and the cushion block 11 are all made of insulating materials.

Example 2

The utility model provides a mounting structure of transformer tank built-in current transformer, includes two standing timber support 1, a plurality of transverse brackets 3, insulating tube 4, layer board 5 and lead wire 10. This structure enables the installation of a plurality of current transformers.

The two standing timber supports 1 are arranged on the outer sides of the side columns and are positioned at positions close to the oil tank 9 in the long axis direction of the transformer, the upper ends of the two standing timber supports 1 are fixedly connected with the upper iron core clamping pieces 7 through fasteners 6, and the lower ends of the two standing timber supports are fixedly connected with the lower iron core clamping pieces 8 through fasteners 6. A plurality of transverse brackets 3 are sequentially and uniformly fixed on the two standing timber brackets 1, the transverse brackets 3 are horizontally arranged, a current transformer 2 is installed between two adjacent transverse brackets 3, an insulating tube 4 is arranged at the center of the current transformer 2, and a lead 10 sequentially penetrates through all the insulating tubes 4 and is connected to a transformer sleeve for extraction. A cushion block 11 is fixed between the transverse bracket 3 and the current transformer 2, and a through hole for passing through the current transformer is formed in the cushion block 11.

The current transformer 2 is fixed in a frame formed by the standing timber support 1 and the transverse support 3.

Preferably, the current transformer 2 is fixedly connected with the transverse bracket 3 by a fastener 6.

Preferably, the two ends of the current transformer 2 are provided with supporting plates 5.

The current transformer 2 is installed in a centralized manner, modular assembly can be performed, the installation difficulty and time are reduced, the problem of product quality caused by installation is avoided, and the overall quality stability of the product is improved. The front current transformer is larger in the selectable range of the quantity and the size of the current transformers relative to the sleeve current transformer, and is simpler in design and manufacture and higher in overall efficiency.

The installation process of the utility model is as follows:

firstly, assembling a current transformer 2 into a whole;

secondly, fixedly connecting the standing timber support 1 and the transverse support 3 which are arranged on the side column with the upper iron core clamping piece 7 and the lower iron core clamping piece 8 through fasteners respectively;

thirdly, mounting the current transformer 2 on the standing tree bracket 1 and the transverse bracket 3, mounting a cushion block 11 between the current transformer 2 and the transverse bracket 3, and mounting supporting plates 5 at two ends of the current transformer 2;

fourthly, the lead wire 10 is passed through the insulating tube 4 and fixed;

and fifthly, connecting a lead wire penetrating through the current transformer 2 to a transformer bushing for leading out, and finishing installation.

According to the leakage magnetic distribution of the transformer, the placement position of the front-mounted current transformer is reasonably designed, so that stray loss caused by leakage magnetic on the current transformer can be effectively reduced, and the influence of larger leakage magnetic on the measurement accuracy of the current transformer under special conditions can be reduced. The built-in current transformer is more efficient in design and manufacture.

The term "consisting of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not substantially affect the essential novel features of the combination. The use of the terms "comprises" or "comprising" to describe combinations of elements, components, or steps herein also contemplates embodiments consisting essentially of such elements, components, or steps. By using the term "may" herein, it is intended that any attribute described as "may" be included is optional.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to forego such subject matter, nor should the applicant be deemed to have such subject matter not considered to be part of the disclosed subject matter.

Claims (8)

1. The installation structure of the built-in current transformer of the transformer oil tank is characterized by comprising a standing timber support (1) and a transverse support (3); the upper end of the standing timber support (1) is fixedly connected with the iron core upper clamping piece (7), and the lower end of the standing timber support is fixedly connected with the iron core lower clamping piece (8); at least two transverse brackets (3) are fixed on the standing tree bracket (1), and a current transformer (2) is arranged between the two transverse brackets (3).

2. The mounting structure of the built-in current transformer of the transformer oil tank according to claim 1, wherein the two ends of the current transformer (2) are provided with supporting plates (5).

3. The mounting structure of a built-in current transformer of a transformer oil tank according to claim 1, wherein an insulating tube (4) is arranged at the center of the current transformer (2).

4. The installation structure of the built-in current transformer of the transformer oil tank according to claim 1, wherein the standing timber support (1) is installed on the outer side of the side column and is positioned close to the oil tank (9) in the long axis direction of the transformer.

5. The mounting structure of the built-in current transformer of the transformer oil tank according to claim 1, wherein a cushion block (11) is mounted between the transverse bracket (3) and the current transformer (2).

6. The installation structure of the built-in current transformer of the transformer oil tank according to claim 5, wherein the cushion block (11) is provided with a through hole.

7. The mounting structure of a built-in current transformer for a transformer tank according to claim 1, characterized in that the transverse brackets (3) are arranged horizontally.

8. The installation structure of the built-in current transformer of the transformer oil tank according to claim 1, wherein the upper end of the standing timber support (1) is fixedly connected with the upper iron core clamping piece (7) through a fastener (6), and the lower end of the standing timber support is fixedly connected with the lower iron core clamping piece (8) through the fastener (6).