CN214956278U

CN214956278U - Dry-type metallic glass transformer core ground connection outlet structure

Info

Publication number: CN214956278U
Application number: CN202121559627.2U
Authority: CN
Inventors: 孙方川; 刘延芬
Original assignee: Tianjin Tongan Transformer Co ltd
Current assignee: Tianjin Tongan Transformer Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2021-11-30
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses a dry-type metallic glass transformer core ground connection extraction structure, including transformer main part, still include insulating terminal box and play spool, transformer main part's outer wall is fixed with insulating terminal box through the mounting screw, insulating terminal box's periphery integrated into one piece of moulding plastics has a play spool, the top cap is installed to insulating terminal box's top nestification, insulating terminal box's inner wall integrated into one piece of moulding plastics has the fixed plate, the lateral wall structure of fixed plate has circular through-hole, and wears to be equipped with copper binding post in the circular through-hole, copper binding post's interior week wears to be equipped with ground connection and draws forth the copper line, copper binding post's periphery is cup jointed and is fixed with the insulating cable sheath, insulating terminal box's inner wall is fixed with the mounting panel through the mounting screw. The connecting part of the grounding lead-out wire and the grounding cable can be sealed and protected, the corrosion oxidation rate is reduced, the service life is prolonged, the grounding cable is convenient to clamp and fix, and the use is convenient.

Description

Dry-type metallic glass transformer core ground connection outlet structure

Technical Field

The utility model relates to a transformer lead-out wire technical field, in particular to dry-type metallic glass transformer core ground connection lead-out wire structure.

Background

When the dry type amorphous alloy transformer operates normally, the iron core must have a certain point for reliable grounding. If the iron core is not grounded, the iron core generates a floating voltage to the ground, the iron core generates intermittent breakdown discharge to the ground, and the possibility of generating a floating potential after the iron core is grounded at one point is eliminated. However, when the iron core is grounded at two or more points, the uneven potential between the iron cores forms a circular current between the grounding points, and the iron core is subjected to a multi-point grounding heating fault. The iron core grounding fault of the transformer can cause the iron core to be locally overheated, and when the iron core is seriously heated, the local temperature rise of the iron core is increased, light gas acts, and even heavy gas acts to trip. The short circuit fault between the iron core sheets is formed by the local iron core which is fused, so that the iron loss of the iron core is increased, the performance and the normal operation of the dry type amorphous alloy transformer are seriously influenced, and the iron core needs to be replaced for repair. The dry-type amorphous alloy transformer does not allow multi-point grounding to be achieved only by one point.

The iron core grounding lead-out wire of the existing dry type amorphous alloy transformer is not convenient to be connected and fixed with a grounding cable when in use, and is exposed for long time, the connection part of the lead-out wire and the grounding cable is easy to corrode and fall off, and potential safety hazard is generated.

Therefore, we propose a dry amorphous alloy transformer core grounding lead-out structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dry-type metallic glass transformer core ground connection leading-out wire structure can effectively solve the problem among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the grounding lead-out wire structure of the dry type amorphous alloy transformer core comprises a transformer main body, an insulating junction box and a lead-out wire, wherein the insulating junction box is fixedly installed on the outer wall of the transformer main body through screws, and the lead-out wire is integrally formed on the periphery of the insulating junction box in an injection molding mode;

a top cover is mounted at the top of the insulating junction box in a nested mode, a fixing plate is integrally formed on the inner wall of the insulating junction box in an injection molding mode, a circular through hole is formed in the side wall of the fixing plate, a copper wiring terminal penetrates through the circular through hole, a grounding leading-out copper wire penetrates through the inner periphery of the copper wiring terminal, and an insulating cable sheath is fixedly sleeved on the outer periphery of the copper wiring terminal;

the inner wall of insulating terminal box is fixed with the mounting panel through the screw installation, the lateral wall integrated into one piece of mounting panel has the connecting rod, the tip integrated into one piece of connecting rod has lower clamp splice, the top overlap joint of lower clamp splice has last clamp splice, threaded connection has the screw to wear the pole between last clamp splice and the lower clamp splice, the bottom of going up the clamp splice and the top of lower clamp splice all construct the arc wall.

Furthermore, rubber protection pads are fixedly bonded on the surfaces of the arc-shaped grooves at the bottom of the upper clamping block and the top of the lower clamping block; the rubber protection pad has certain elastic denaturation capability, and prevents clamping damage to a grounding cable connected with the grounding lead-out copper wire.

Furthermore, a partition plate is clamped inside the insulating junction box, and a through hole is formed in the side wall of the partition plate; the baffle can separate the inner space of insulating terminal box, improves the protection effect of drawing forth the copper line to copper binding post and ground connection.

Further, a rubber sealing strip is arranged between the top cover and the insulating junction box; the waterproof effect of the insulating junction box is improved, and water is prevented from entering the insulating junction box.

Further, the inner circumference of the outlet pipe is connected with a waterproof cover in a threaded manner; when the transformer main body is transferred to wait for use, water can be prevented from entering the outlet pipe.

Compared with the prior art, the utility model discloses following beneficial effect has: the insulating junction box, the top cover and the partition plate are arranged, so that the copper wiring terminal and the grounding lead-out copper wire can be sealed and protected, the phenomena of corrosion, oxidation and the like at the joint between the grounding lead-out copper wire and a grounding cable in the use process are avoided, and the service life is prolonged; the upper clamping block, the lower clamping block, the threaded penetrating rod and the rubber protection pad are arranged, so that the grounding cable can be clamped and fixed conveniently, the trend of the grounding cable can be determined, the fixing effect on the grounding cable is good, and the safety is high; the grounding cable and the copper wiring terminal are fixed in a compression joint mode, the upper clamping block and the lower clamping block are abutted tightly through the threaded penetrating rod, the grounding cable can be installed, the use is convenient, and the steps are simple.

Drawings

Fig. 1 is a schematic structural diagram of the grounding lead-out structure of the dry-type amorphous alloy transformer core of the present invention.

Fig. 2 is a cross-sectional view of the grounding lead-out structure of the dry amorphous alloy transformer core of the present invention.

Fig. 3 is an enlarged view of a structure a in fig. 2 of a dry-type amorphous alloy transformer core ground lead-out structure of the present invention.

In the figure: 1. a virtual eyeglass base; 2. a left lens frame.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-3, a dry-type amorphous alloy transformer core grounding outgoing line structure comprises a transformer main body 1, an insulating junction box 2 and an outgoing line pipe 3, wherein the insulating junction box 2 is fixedly installed on the outer wall of the transformer main body 1 through a screw, and the outgoing line pipe 3 is integrally formed on the periphery of the insulating junction box 2 through injection molding;

a top cover 5 is embedded and mounted at the top of the insulating junction box 2, a fixing plate 7 is integrally formed on the inner wall of the insulating junction box 2 in an injection molding mode, a circular through hole is formed in the side wall of the fixing plate 7, a copper wiring terminal 9 penetrates through the circular through hole, a grounding leading-out copper wire 10 penetrates through the inner periphery of the copper wiring terminal 9, and an insulating cable sheath 8 is fixedly sleeved on the outer periphery of the copper wiring terminal 9;

the inner wall of insulating terminal box 2 is fixed with mounting panel 11 through the screw installation, the lateral wall integrated into one piece of mounting panel 11 has connecting rod 12, the tip integrated into one piece of connecting rod 12 has lower clamp splice 13, the top overlap joint of lower clamp splice 13 has last clamp splice 14, threaded connection has screw thread pole 15 between last clamp splice 14 and the lower clamp splice 13, the bottom of going up clamp splice 14 and the top of lower clamp splice 13 all construct the arc wall.

Wherein, rubber pads 16 are fixedly bonded on the arc-shaped groove surfaces at the bottom of the upper clamping block 14 and the top of the lower clamping block 13; the rubber pad 16 has a certain elastic deformation capability, so as to prevent the ground cable connected with the ground lead-out copper wire 10 from being damaged by clamping.

A partition plate 6 is clamped inside the insulating junction box 2, and a through hole is formed in the side wall of the partition plate 6; the partition plate 6 can partition the internal space of the insulating junction box 2, and the protection effect of the copper wiring terminal 9 and the grounding lead-out copper wire 10 is improved.

A rubber sealing strip is arranged between the top cover 5 and the insulating junction box 2; improve insulating terminal box 2's water-proof effects, avoid insulating terminal box 2 internal water intaking.

Wherein, the inner circumference thread of the outlet pipe 3 is connected with a waterproof cover 4; when the transformer body 1 is transferred and used, water can be prevented from entering the outlet pipe 3.

It should be noted that, the utility model relates to a dry-type metallic glass transformer core ground connection outlet structure, in use, after accomplishing transformer main part 1 installation, get ground cable, take off waterproof cover 4, pass outlet pipe 3 and baffle 6's through-hole with ground cable, draw out copper line 10 with ground cable and ground connection afterwards and pass through copper binding post 9 crimping together, and heat is baked insulating cable sheath 8, draw out the junction parcel of copper line 10 with ground cable and ground connection, it is fixed with clamp splice 14 and the installation of clamp splice 13 down to use screw thread pole 15 to wear, and make ground cable pass in the arc wall between clamp splice 14 and the clamp splice 13 down, at last according to the design requirement with ground cable ground connection can.

The basic principles and the main features of the invention and the advantages of the 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 above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A dry-type amorphous alloy transformer core grounding outgoing line structure comprises a transformer main body (1), and is characterized by further comprising an insulating junction box (2) and an outgoing line pipe (3), wherein the insulating junction box (2) is fixedly installed on the outer wall of the transformer main body (1) through screws, and the outgoing line pipe (3) is integrally formed on the periphery of the insulating junction box (2) in an injection molding mode;

a top cover (5) is installed at the top of the insulating junction box (2) in an embedded mode, a fixing plate (7) is formed on the inner wall of the insulating junction box (2) in an injection molding and integral mode, a circular through hole is formed in the side wall of the fixing plate (7), a copper wiring terminal (9) penetrates through the circular through hole, a grounding leading-out copper wire (10) penetrates through the inner periphery of the copper wiring terminal (9), and an insulating cable sheath (8) is fixedly sleeved on the outer periphery of the copper wiring terminal (9);

the inner wall of insulating terminal box (2) is fixed with mounting panel (11) through the screw installation, the lateral wall integrated into one piece of mounting panel (11) has connecting rod (12), the tip integrated into one piece of connecting rod (12) has clamp splice (13) down, the top overlap joint of clamp splice (13) has last clamp splice (14) down, go up clamp splice (14) and down between clamp splice (13) threaded connection have screw thread to wear pole (15), the bottom of going up clamp splice (14) and the top of clamp splice (13) down all are constructed the arc wall.

2. The grounding lead-out structure of the dry-type amorphous alloy transformer core according to claim 1, characterized in that: rubber pads (16) are fixedly bonded on the surfaces of the arc-shaped grooves at the bottom of the upper clamping block (14) and the top of the lower clamping block (13).

3. The grounding lead-out structure of the dry-type amorphous alloy transformer core according to claim 1, characterized in that: the inside joint of insulating terminal box (2) has baffle (6), the lateral wall structure of baffle (6) has the through-hole.

4. The grounding lead-out structure of the dry-type amorphous alloy transformer core according to claim 1, characterized in that: and a rubber sealing strip is arranged between the top cover (5) and the insulating junction box (2).

5. The grounding lead-out structure of the dry-type amorphous alloy transformer core according to claim 1, characterized in that: the inner circumference thread of the wire outlet pipe (3) is connected with a waterproof cover (4).