Fusion structure of drop-out fuse and gapless lightning arrester

Abstract

The utility model discloses a fusion structure of a drop-out fuse and a gapless lightning arrester. The fusion structure comprises a fuse carrier and a support body, wherein the support body is formed by compounding a drawing bar and a cavity, a conductive plate is mounted at the outer end of the cavity, and a mounting plate is arranged at the outer end of the drawing bar; an upper outgoing line terminal is arranged at the joint of the support body and the upper end of the fuse carrier, a lower outgoing line terminal is arranged at the joint of the support body and the lower end of the fuse carrier, and the conductive plate is connected with an upper static contact piece at the upper end of the fuse carrier; the fusion structure provided by the utility model is similar to an original drop-out fuse in overall shape, namely, the fusion structure has two functions of the drop-out fuse and a gapless lightning arrester on the premise of not occupying additional installation space.

Description

Technical Field

[0001] The utility model relates to the technical field of fuses and lightning arresters, and in particular provides a fusion structure of a drop-out fuse and a gapless lightning arrester. Background Art

[0002] With the continuous development of science and technology, drop-out fuses and gapless lightning arresters are widely used in transmission lines. However, under the current conditions, users need to install and use drop-out fuses and gapless lightning arresters separately, which has problems such as complicated installation process, large installation volume, and occupying line equipment space.

[0003] Therefore, it is very meaningful to propose a structure that can combine a drop-out fuse and a gapless lightning arrester. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a fusion structure of a drop-out fuse and a gapless lightning arrester to solve the problems of complex installation procedures and occupied line equipment space in the existing fuse and lightning arrester installation.

[0005] The technical solution provided by this utility model is:

[0006] A fusion structure of a drop-out fuse and a gapless lightning arrester, comprising a fuse carrier support body; wherein the support body is composed of a lead rod and a cavity; a conductive plate is mounted on the outer end of the cavity; and a mounting plate is mounted on the outer end of the lead rod; an upper outlet terminal is provided at the connection between the upper end of the support body and the fuse carrier, and a lower outlet terminal is provided at the connection between the lower end and the upper end; wherein the conductive plate is connected to an upper static contact at the upper end of the fuse carrier;

[0007] The inner end of the pull-out rod is spliced with the inner end of the cavity. The cavity is filled with a first electrode, a zinc oxide resistor group, and a second electrode in sequence from the head end to the tail end. The lower outlet terminal of the lightning arrester is provided outside the cavity.

[0008] Specifically, a first threaded hole is embedded in the inner end of the pull-out rod, a second threaded hole is embedded in one end of the first electrode, the first threaded hole is connected to the second threaded hole, and a stud bolt is screwed into the first threaded hole and the second threaded hole; a third threaded hole is embedded in one end of the second electrode, a flat-head bolt is placed in the third threaded hole, and the conductive plate is installed at the outer end of the cavity through the flat-head bolt.

[0009] Specifically, the draw rod is a high-strength insulator.

[0010] Specifically, the zinc oxide resistor group is formed by stacking five zinc oxide resistors arranged in sequence along the extension direction of the cavity.

[0011] Specifically, a top screw is fixedly provided on the side surface of the connection between the stud bolt or the flat head bolt and the threaded hole.

[0012] Specifically, the outer wall of the cavity is a DMC composite structure.

[0013] Specifically, the support body is wrapped with a vulcanization layer.

[0014] Specifically, the mounting plate may be nested in the outer end of the drawing rod via an adhesive layer.

[0015] The utility model provides a fusion structure of a drop-out fuse and a gapless lightning arrester. The fusion structure is similar to the original drop-out fuse in overall shape, that is, it has the functions of both the drop-out fuse and the gapless lightning arrester without occupying additional installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 A schematic structural diagram of a fusion structure of a drop-out fuse and a gapless lightning arrester provided by the utility model;

[0018] Figure 2 The present invention provides a schematic structural diagram of a support body in a fusion structure of a drop-out fuse and a gapless lightning arrester. DETAILED DESCRIPTION

[0019] The present invention will be further explained below in conjunction with specific implementation plans, but the present invention is not limited thereto.

[0020] The existing user line installation of fuses and lightning arresters requires the installation of corresponding hardware and a set of three products for each. The installation equipment takes up space on the line equipment. In order to solve the problems of complex installation procedures of drop-type fuses and gapless lightning arresters, this embodiment provides a fusion structure of drop-type fuses and gapless lightning arresters, such as Figure 1 As shown, it includes a fuse carrier 7 and a support body; wherein the support body is composed of a pull-out rod 1 and a cavity 2, the outer end of the cavity 2 is installed with a conductive plate 6, and the outer end of the pull-out rod 1 is provided with a mounting plate 12; the upper end connection of the support body and the fuse carrier 7 is provided with an upper outlet terminal 8, and the lower end connection is provided with a lower outlet terminal 11, wherein the conductive plate 6 is connected to the upper static contact piece at the upper end of the fuse carrier 7, and the outside of the cavity 2 is provided with a lightning arrester lower outlet terminal 10; on this fusion structure, the current path: upper outlet terminal 8, fuse carrier 7, lower outlet terminal 11, and upper outlet terminal 8, the embedded lightning arrester part (cavity) in the support body 2, and the lightning arrester lower outlet terminal 10.

[0021] The inner end of the drawing rod 1 is joined to the inner end of the cavity 2 , and the cavity 2 is filled with a first electrode 3 , a zinc oxide resistor group, and a second electrode 31 in sequence from the head end to the tail end.

[0022] A first threaded hole is embedded in the inner end of the pull-out rod 1, and a second threaded hole is embedded in one end of the first electrode 3. The first threaded hole is connected to the second threaded hole, and a stud bolt is screwed into the first threaded hole and the second threaded hole; a third threaded hole is embedded in one end of the second electrode 31, and a flat-head bolt is placed in the third threaded hole, and the conductive plate 6 is installed on the outer end of the cavity 2 through the flat-head bolt.

[0023] The drawing rod 1 is a high-strength insulator.

[0024] The zinc oxide resistor group is formed by five zinc oxide resistors 4 arranged and stacked in sequence along the extension direction of the cavity 2 .

[0025] A top screw 14 is fixedly provided on the side surface of the connection between the stud bolt or flat head bolt and the threaded hole.

[0026] The outer wall of the cavity 2 is a DMC composite structure, which is made of existing DMC composite materials. DMC composite materials are molding materials made of unsaturated polyester, a curing agent, and fillers (usually glass fiber), and have high mechanical strength and good dimensional stability.

[0027] The support body 2 is wrapped with a sulfurized layer 5 .

[0028] The mounting plate 12 can be nested on the outer end of the drawing rod 1 through the adhesive layer.

[0029] The installation process of the above fusion structure is as follows:

[0030] Figure 2This is an overall cross-sectional view of the drop-out fuse support insulator for an embedded lightning arrester. The mounting plate 12 is nested on the high-strength insulating material pull-out rod 1 and bonded by an adhesive 502. The lightning arrester's external composite material DMC cavity 2 is placed on the right side of the high-strength insulating material pull-out rod 1. The end of the high-strength insulating material pull-out rod 1 with the embedded threaded hole on the right side is connected and tightened by a stainless steel stud bolt, and fixed with a side top screw 14. The electrode 3 with the built-in threaded hole is placed in the left side of the lightning arrester's external composite material DMC cavity 2, and the other end of the stainless steel stud bolt is connected to the electrode 3 with the built-in threaded hole and tightened, and fixed with a side top screw 14. The lightning arrester's external composite material DMC cavity 2 is composed of 5 zinc oxide resistors 4 arranged and stacked in sequence, and the electrode 3 with the built-in threaded hole is placed on the right side of the resistor. A conductive plate 6 is installed on the right side of the lightning arrester's external composite material DMC cavity 2, so that the conductive plate 6 is nested on the right end of the lightning arrester's external composite material DMC cavity 2. The right side is connected to the electrode 3 with the built-in threaded hole on the right side through the conductive plate 6 with a flat head bolt 15, and fixed with a side top screw 14. Finally, the whole is wrapped with a composite jacket 5 and vulcanized.

[0031] The fusion structure of the new drop-out fuse and gapless arrester provided in this embodiment effectively simplifies the installation of both the arrester and the drop-out fuse, requiring only the fusion structure for installation. The volume is similar to that of existing drop-out fuses, and the installation method is the same as that of drop-out fuses, with a simple process and convenient installation.

[0032] Testers at the testing station installed the fusion product of a drop-out fuse and a gapless arrester on-site, and the installation went smoothly. Simulating normal opening and closing operations, overcurrent testing, and arrester inspections, the test results showed that the fuse-carrying element loaded and melted properly, overcurrent protection functioned well, and the arrester parameters performed well, with no deformation or damage to the product.

[0033] The specific implementation methods of the present invention are written in a progressive manner, emphasizing the differences between the various implementation methods, and similar parts can be referenced to each other.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A fusion structure of a drop-out fuse and a gapless lightning arrester, characterized in that: The invention comprises a fuse carrier (7) and a support body; wherein the support body is composed of a lead rod (1) and a cavity (2); a conductive plate (6) is installed at the outer end of the cavity (2); and a mounting plate (12) is provided at the outer end of the lead rod (1); an upper outlet terminal (8) is provided at the connection between the upper end of the support body and the fuse carrier (7), and a lower outlet terminal (11) is provided at the connection between the lower end and the conductive plate (6); and the upper static contact piece at the upper end of the fuse carrier (7) is connected; The inner end of the pull-out rod (1) is joined to the inner end of the cavity (2); the cavity (2) is filled with a first electrode (3), a zinc oxide resistor group, and a second electrode (31) in sequence from the head end to the tail end; and the lower outlet terminal (10) of the lightning arrester is provided outside the cavity (2).

2. The fusion structure of a drop-out fuse and a gapless lightning arrester according to claim 1, characterized in that: A first threaded hole is embedded in the inner end of the drawing rod (1), a second threaded hole is embedded in one end of the first electrode (3), the first threaded hole is connected to the second threaded hole, and a stud bolt is screwed into the first threaded hole and the second threaded hole; a third threaded hole is embedded in one end of the second electrode (31), a flat-head bolt is placed in the third threaded hole, and the conductive plate (6) is installed on the outer end of the cavity (2) through the flat-head bolt.

3. The fusion structure of a drop-out fuse and a gapless lightning arrester according to claim 1, characterized in that: The drawing rod (1) is a high-strength insulator.

4. The fusion structure of a drop-out fuse and a gapless lightning arrester according to claim 1, characterized in that: The zinc oxide resistor group is formed by five zinc oxide resistors (4) being arranged and stacked in sequence along the extension direction of the cavity (2).

5. The fusion structure of a drop-out fuse and a gapless lightning arrester according to claim 2, characterized in that: A top screw (14) is fixedly provided on the side surface of the connection between the stud bolt or the flat head bolt and the threaded hole.

6. The fusion structure of a drop-out fuse and a gapless lightning arrester according to claim 1, characterized in that: The outer wall of the cavity (2) is a DMC composite structure.

7. The fusion structure of a drop-out fuse and a gapless lightning arrester according to claim 1, characterized in that: The support body is wrapped with a sulfide layer (5).

8. The fusion structure of a drop-out fuse and a gapless lightning arrester according to claim 1, characterized in that: The mounting plate (12) can be nested on the outer end of the drawing rod (1) via an adhesive layer.

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