CN212694935U - Copper plate binding post for dry-type transformer wiring cavity and dry-type transformer - Google Patents

Abstract

The utility model relates to a copper terminal for dry-type transformer wiring chamber, including the copper terminal, the copper terminal includes copper plate and the insulating cover of parcel at the copper plate middle part, the cover is equipped with the pressure disk on the insulating cover, and a plurality of closing device are installed to the edge detachable of pressure disk. The utility model also discloses a dry-type transformer. The utility model discloses following beneficial effect has: simple structure, simple to operate has solved the overheated problem that melts of heavy current dry-type transformer low-voltage bushing on dry-type transformer wiring chamber through the installation copper terminal, makes the transformer life-span longer, and the security performance is high, and the fault rate reduces, for the increase economic benefits of enterprise.

Description

Copper plate binding post for dry-type transformer wiring cavity and dry-type transformer

Technical Field

The utility model relates to a dry-type transformer wiring chamber is with copper terminal and dry-type transformer belongs to dry-type transformer manufacturing technical field.

Background

The dry type transformer has the advantages of strong short circuit resistance, small maintenance workload, high operation efficiency, small volume, low noise and the like, and is commonly used in places with high performance requirements on fire prevention, explosion prevention and the like. However, the conventional terminal block causes the conductive rod to be overheated and is prone to malfunction. Therefore, a copper plate binding post for a dry type transformer wiring cavity and a dry type transformer are needed to be needed, and the problems that a conducting rod is overheated, epoxy resin between a porcelain bottle and a copper sleeve is melted and faults occur due to large current are solved.

SUMMERY OF THE UTILITY MODEL

According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: in order to solve one of the problems, the copper plate binding post for the dry type transformer wiring cavity and the dry type transformer are provided.

Dry-type transformer wiring copper terminal for chamber, its characterized in that: including the copper terminal, the copper terminal includes copper plate and the insulating cover of parcel at the copper plate middle part, the cover is equipped with the pressure disk on the insulating cover, and a plurality of closing device are installed to the marginal detachable of pressure disk.

Preferably, the outer section of the insulating sleeve is circular, and an annular limiting boss protruding outwards is integrally arranged on the outer wall of the middle part of the insulating sleeve.

Preferably, the pressure disk is circular pressure disk, the central point of pressure disk puts and sets up the through hole that supplies insulating cover to pass, through hole inner wall and insulating cover interference fit or clearance fit, and the internal diameter of through hole is less than the external diameter of the spacing boss of annular, and a plurality of bolt holes have been seted up along its circumferencial direction in the edge of pressure disk, prevent that the copper terminal is not hard up and shift.

Preferably, the pressing device is a high-strength bolt of M10 × 70, and is connected with the pressure plate through a bolt hole.

The utility model also discloses a dry-type transformer, including dry-type transformer low pressure wiring chamber, its characterized in that: the copper plate wiring terminal for the dry-type transformer wiring cavity is further included, the dry-type transformer low-voltage wiring cavity is provided with a round hole type explosion-proof surface, one end of the insulating sleeve penetrates through a round hole of the round hole type explosion-proof surface, two ends of the pressing device are respectively fixed on the pressure plate and the round hole type explosion-proof surface of the dry-type transformer low-voltage wiring cavity, the annular limiting boss is extruded between the round hole type explosion-proof surface and the pressure plate, one side end face of the annular limiting boss is in close contact with the round hole type explosion-proof surface, and explosion.

Preferably, the red copper plate has the size of 20mm × 50mm × 260mm, the thickness of the copper plate is 20mm, the width of the copper plate is 50mm, and two phi 14 fixing holes are formed in each end of the copper plate.

Preferably, the insulating sleeve and the annular limiting boss are both made of polyester imide.

Preferably, the round hole of the round hole type explosion suppression surface is in clearance fit or interference fit with the insulating sleeve.

Compared with the prior art, the utility model discloses following beneficial effect has: dry-type transformer wiring chamber copper terminal and dry-type transformer, simple structure, simple to operate, through installation copper terminal on dry-type transformer wiring chamber, solved the overheated problem that melts of heavy current dry-type transformer low pressure sleeve pipe, make the transformer life-span longer, the security performance is high, the fault rate reduces, for the increase economic benefits of enterprise.

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 embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a front view of the copper plate terminal;

FIG. 4 is a side view of a copper plate terminal;

fig. 5 is a schematic view of the platen structure.

In the figure: 1. the low-voltage wiring cavity of the dry-type transformer comprises a low-voltage wiring cavity 2, a copper plate wiring terminal 2.1, a copper plate 2.2, an insulating sleeve 2.3, an annular limiting boss 3, a pressure plate 4 and a pressing device.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Examples

As shown in fig. 1-5, dry-type transformer wiring copper terminal for chamber, including copper terminal 2, copper terminal 2 includes copper plate 2.1 and wraps up at the insulating cover 2.2 at copper plate 2.1 middle part, the cover is equipped with pressure disk 3 on insulating cover 2.2, and a plurality of closing device 4 are installed to the edge detachable of pressure disk 3.

In the embodiment, the outer section of the insulating sleeve 2.2 is circular, and the outer wall of the middle part of the insulating sleeve 2.2 is integrally provided with an annular limiting boss 2.3 protruding outwards; the pressure plate 3 is a circular pressure plate, a through hole for the insulating sleeve 2.2 to pass through is formed in the center of the pressure plate 3, the inner wall of the through hole is in interference fit or clearance fit with the insulating sleeve 2.2, the inner diameter of the through hole is smaller than the outer diameter of the annular limiting boss 2.3, and a plurality of bolt holes are formed in the edge of the pressure plate 3 along the circumferential direction of the pressure plate; the pressing device 4 is an M10 multiplied by 70 high-strength bolt and is connected with the pressure plate 3 through a bolt hole.

The utility model also discloses a dry-type transformer, including dry-type transformer low pressure wiring chamber 1, still include above-mentioned copper terminal for dry-type transformer wiring chamber, dry-type transformer low pressure wiring chamber 1 has the round hole type flame proof face, and the round hole of round hole type flame proof face is run through to the one end of insulating cover 2.2, and the both ends of closing device 4 are fixed respectively on the round hole type flame proof face of pressure disk 3 and dry-type transformer low pressure wiring chamber 1, extrude annular spacing boss 2.3 between round hole type flame proof face and pressure disk 3, and a side end face of annular spacing boss 2.3 and round hole type flame proof face in close contact with, prevent the explosion loss from taking place; the red copper plate 2.1 has the size of 20mm multiplied by 50mm multiplied by 260mm, the thickness of the copper plate is 20mm, the width of the copper plate is 50mm, and two phi 14 fixing holes are respectively arranged at two ends of the copper plate; the insulating sleeve 2.2 and the annular limiting boss 2.3 are made of polyester imide; and the round hole of the round hole type explosion-proof surface is in clearance fit or interference fit with the insulating sleeve 2.2.

The utility model discloses a theory of operation: the copper plate binding post consists of a copper plate with the thickness of 20mm multiplied by 50mm multiplied by 260mm and a class C polyester imide material. It is characterized in that: the C-grade polyester imide is wrapped by a copper plate with the thickness of 20mm multiplied by 50mm multiplied by 260mm by a mould, a connecting flange and a copper sleeve are not arranged, and the copper plate with the larger cross section area is adopted for conducting electricity by 2.1. The thickness of the red copper plate 2.1 in the copper plate binding post is 20mm, the width is 50mm, and two fixing holes with phi 14 are respectively arranged at two ends and used for crimping the connecting wire. Calculated conductive contact area =50 (width) × 50 (length) -2 × 3.14 × 7 × 7 (fixed aperture radius) =2192 mm. And the conductive contact area that originally adopted phi 24 conducting bar type low-voltage bushing is 452mm, and the copper wiring terminal is greater than traditional vase low-voltage bushing conductive contact area 4.85 times. The current bearing capacity of the low-voltage side terminal of the high-current dry-type transformer can be greatly improved. Therefore, the dry-type transformer has larger current-carrying capacity, lower heat generation and low failure rate.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides a copper terminal for dry-type transformer wiring chamber which characterized in that: including copper terminal (2), copper terminal (2) include copper (2.1) and wrap up insulating cover (2.2) at copper (2.1) middle part, the cover is equipped with pressure disk (3) on insulating cover (2.2), and a plurality of closing device (4) are installed to the edge detachable of pressure disk (3).

2. The copper plate terminal for a dry type transformer connection cavity according to claim 1, wherein: the outer section of the insulating sleeve (2.2) is circular, and an annular limiting boss (2.3) protruding outwards is integrally arranged on the outer wall of the middle part of the insulating sleeve (2.2).

3. The copper plate terminal for a dry type transformer connection cavity according to claim 1, wherein: pressure disk (3) are circular pressure disk, the central point of pressure disk (3) puts and offers the through hole that supplies insulating cover (2.2) to pass, and the through hole inner wall is lighter than the external diameter of annular spacing boss (2.3) with insulating cover (2.2) interference fit or clearance fit, through hole, and the edge of pressure disk (3) prolongs its circumferencial direction and has seted up a plurality of bolt holes.

4. The copper plate terminal for a dry type transformer connection cavity according to claim 3, wherein: the pressing device (4) is an M10 multiplied by 70 high-strength bolt and is connected with the pressure plate (3) through a bolt hole.

5. A dry-type transformer comprises a low-voltage wiring cavity (1) of the dry-type transformer, and is characterized in that: the copper plate wiring terminal for the dry type transformer wiring cavity further comprises a copper plate wiring terminal for the dry type transformer wiring cavity according to any one of claims 1 to 4, the dry type transformer low-voltage wiring cavity (1) is provided with a round hole type explosion-proof surface, one end of an insulating sleeve (2.2) penetrates through a round hole of the round hole type explosion-proof surface, two ends of a pressing device (4) are respectively fixed on the round hole type explosion-proof surface of the pressure plate (3) and the round hole type explosion-proof surface of the dry type transformer low-voltage wiring cavity (1), an annular limiting boss (2.3) is extruded between the round hole type explosion-proof surface and the pressure plate (3), one side end face of the annular limiting boss (2.3.

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