CN113674931A

CN113674931A - High-strength all-insulation large-current direct-current bus fastening assembly

Info

Publication number: CN113674931A
Application number: CN202110766614.0A
Authority: CN
Inventors: 蒋力; 张�杰
Original assignee: Hefei Institutes of Physical Science of CAS
Current assignee: Hefei Institutes of Physical Science of CAS
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-11-19

Abstract

The invention relates to the electrical field, in particular to a high-strength full-insulation large-current direct-current bus fastening assembly which comprises a first clamp, a second clamp, an insulator and a connecting plate, wherein the first clamp consists of a first U-shaped clamp plate and first connecting tables arranged at two ends of the first clamp plate, the second clamp consists of a second U-shaped clamp plate and second connecting tables arranged at two ends of the second clamp plate, the first connecting tables and the second connecting tables are fixedly connected through first bolts, the bottom of the second U-shaped clamp is connected with one end of the insulator, and the other end of the insulator is connected with the connecting plate.

Description

High-strength all-insulation large-current direct-current bus fastening assembly

Technical Field

The invention relates to the electrical field, in particular to a high-strength all-insulation large-current direct-current bus fastening assembly.

Background

The current situation research of installing the large-current direct-current bus at home and abroad at present discovers that the large-current direct-current bus is fastened by channel steel or angle steel mostly, and is insulated by a porcelain insulator. However, with the development of science and technology, especially the wide application of large-current equipment, the fastening and insulation of a large-current direct-current bus become more important, although the prior porcelain insulator assembly clamp can also meet the requirements, in the practical application process, the porcelain insulator is not only heavy, but also has poor shearing resistance, for example, the common ZD-10F porcelain insulator has a bending damage load of 20KN, the fracture phenomenon of a glued part is easy to occur in the operation process of the equipment, and if a fastening device adopts channel steel and angle steel, the insulation requirement is very high, and the tip discharge phenomenon can be generated, so that the high-strength full-insulation large-current direct-current bus fastening assembly consisting of the clamp made of epoxy materials and the epoxy insulator can solve the insulation and fracture problems in the practical application process.

In addition, the porcelain insulator type insulator clamp occupies a large space and is heavy in weight, the installation is more complex in the whole direct current bus system, and particularly, the installation is more difficult in high-altitude operation, so that the high-strength full-insulation large-current direct current bus fastening assembly can be more conveniently installed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a high-strength all-insulation large-current direct-current bus fastening assembly.

In order to solve the technical problems, the technical scheme provided by the invention is that the high-strength full-insulation large-current direct-current bus fastening assembly comprises a first clamp, a second clamp, an insulator and a connecting plate, wherein the first clamp comprises a first U-shaped clamp plate and first connecting tables arranged at two ends of the first clamp plate, the second clamp comprises a second U-shaped clamp plate and second connecting tables arranged at two ends of the second clamp plate, the first connecting tables and the second connecting tables are fixedly connected through first bolts, the bottom of the second U-shaped clamp is connected with one end of the insulator, and the other end of the insulator is connected with the connecting plate.

As an improvement, the bottom of the second U-shaped clamping plate is fixedly connected with the insulator through an inner hexagonal bolt.

As an improvement, one end of the insulator, far away from the second clamp, is fixedly connected with the connecting plate through a countersunk head bolt.

As an improvement, the four corners of the connecting plate body are respectively provided with a second bolt for connecting the fixing frame.

As an improvement, the insulator is made of epoxy resin material.

Compared with the prior art, the invention has the advantages that:

1. the mechanical strength is high, and the bending strength of the epoxy material reaches 145 MPa;

2. the insulation performance is good, and a 25Kv withstand voltage test in normal air passes;

3. the flame retardant property is strong;

4. the material density is low, and the overall weight is smaller than that of a porcelain insulator;

5. the space required for installation is small.

Drawings

FIG. 1 is a schematic top view of a fastener assembly;

FIG. 2 is a schematic bottom view of the fastener assembly;

FIG. 3 is a first exploded schematic view of the fastening assembly;

FIG. 4 is a second exploded schematic view of the fastening assembly;

fig. 5 is a schematic view of a use state.

As shown in the figure: 1. the connecting structure comprises a first clamp, 101, a first connecting table, 102, a first U-shaped clamping plate, 2, a second clamp, 201, a second connecting table, 202, a second U-shaped clamping plate, 3, an insulator, 4, a connecting plate, 5, a first bolt, 6, an inner hexagonal bolt, 7, a second bolt, 8, a countersunk head bolt, 9, a bus, 10 and a supporting structure.

Detailed Description

The following describes the high-strength fully insulated high-current dc bus bar fastening assembly in further detail with reference to the accompanying drawings.

With reference to fig. 1-5, a high-strength all-insulation large-current dc bus fastening assembly includes a first clamp 1, a second clamp 2, an insulator 3, and a connecting plate 4, where the first clamp 1 is composed of a first U-shaped clamp plate 102 and a first connecting platform 101 disposed at two ends of the first clamp plate 102, the second clamp 2 is composed of a second U-shaped clamp plate 202 and a second connecting platform 201 disposed at two ends of the second clamp plate 202, the first connecting platform 101 and the second connecting platform 201 are fixedly connected by a first bolt 5, the bottom of the second U-shaped clamp 202 is connected with one end of the insulator 3, and the other end of the insulator 3 is connected with the connecting plate 4.

As a preferred embodiment of the present embodiment, the bottom of the second U-shaped clamping plate 202 is fixedly connected to the insulator 3 by the internal hexagonal bolt 6.

As a preferred embodiment of the present embodiment, one end of the insulator 3 away from the second clamp 2 is fixedly connected to the connecting plate 4 through a countersunk head bolt 8.

As a preferred embodiment of this embodiment, the four corners of the plate body of the connecting plate 8 are respectively provided with a second bolt 7 for connecting with a fixing frame.

As a preferred embodiment of this embodiment, the insulator 3 is made of epoxy resin.

In the specific implementation of the invention, the assembled lower half part of the fastening component is fixed on the supporting structure 10 through the second bolt 7, the direct current bus 9 is hoisted on the assembled second U-shaped splint of the fastening component, the first clamp 1 and the second clamp 2 are fixed through the first bolt 5, after the section height of the direct current bus 9 is increased, the fastening component can still fasten the direct current bus 9 through the first bolt, the stress analysis is carried out on the fastening component under the condition of short circuit of the direct current bus system, when the short circuit current reaches 350KA, the electrodynamic force generated between the two direct current buses is maximum, the stress analysis shows that under the condition of short circuit of the direct current system, the maximum stress of the insulator and the clamp is 97.563MPa, and the bending strength of the epoxy insulator and the epoxy clamp can completely meet (the maximum 145 MPa).

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a high strength all insulation heavy current direct current generating line fastening components which characterized in that: including first anchor clamps (1), second anchor clamps (2), insulator (3) and connecting plate (4), first anchor clamps (1) are by first U type splint (102) and set up in first connecting station (101) at first splint (102) both ends and constitute, second anchor clamps (2) are by second U type splint (202) and set up in second connecting station (201) at second splint (202) both ends and constitute, first connecting station (101) with connect through first bolt (5) fixed connection between the platform (201) second, second U type anchor clamps (202) bottom is connected with insulator (3) one end, insulator (3) other end and connecting plate (4) are connected.

2. A high strength fully insulated high current dc bus bar fastening assembly as recited in claim 1, wherein: the bottom of the second U-shaped clamping plate (202) is fixedly connected with the insulator (3) through an inner hexagonal bolt (6).

3. A high strength fully insulated high current dc bus bar fastening assembly as recited in claim 1, wherein: and one end of the insulator (3) far away from the second clamp (2) is fixedly connected with the connecting plate (4) through a countersunk head bolt (8).

4. A high strength fully insulated high current dc bus bar fastening assembly as recited in claim 1, wherein: and the four corners of the plate body of the connecting plate (8) are respectively provided with a second bolt (7) for connecting the fixing frame.

5. A high strength fully insulated high current dc bus bar fastening assembly as recited in claim 1, wherein: the insulator (3) is made of epoxy resin material.