CN202363343U

CN202363343U - Main-loop insulation part of three-position disconnecting switch

Info

Publication number: CN202363343U
Application number: CN 201120477818
Authority: CN
Inventors: 王宏宏; 樊丽; 白明
Original assignee: Tianshui Changcheng Switchgear Co Ltd
Current assignee: Tianshui Changcheng Switchgear Co Ltd
Priority date: 2011-11-27
Filing date: 2011-11-27
Publication date: 2012-08-01
Anticipated expiration: 2021-11-27

Abstract

The utility model discloses a main-loop insulation part of a three-position disconnecting switch, which comprises a tubular main body. A current conducting rod is arranged in the main body, and a grounding shielding net is arranged in the side wall of the main body. Two cantilevers are symmetrically and fixedly connected on the side wall of the main body, and one ends of the two cantilevers far away from the main body are respectively provided with a mounting table. The two mounting tables are arranged in the same direction, and camphene parts are respectively arranged on the two mounting tables. The insulation part has the functions for supporting a contact carrier and ensuring the accurate assembly of three positions of connecting, disconnecting and grounding of the three-position disconnecting switch. The insulation part has the advantages of small volume, simple and compact structure, high reliability and small operating force.

Description

Tri-station isolating switch major loop insulating part

Technical field

The utility model belongs to electric elements manufacturing technology field, relates to the insulating part that isolating switch is used in a kind of gas-insulated high-voltage switchgear assembly, is specifically related to a kind of tri-station isolating switch major loop insulating part.

Background technology

The insulating part that the gas-insulated high-voltage switchgear assembly tri-station isolating switch is used, great majority adopt split-type structural, and volume is big, complex structure; When air chamber charges and discharges gas when distortion occurring, weak point such as this insulating part shows that deflection is big, relative position, fracture distance are inaccurate, reliability is lower.

The utility model content

In order to overcome the problem that exists in the above-mentioned prior art, the purpose of the utility model provides a kind of volume tri-station isolating switch major loop insulating part little, simple in structure, has higher reliability.

Be to realize that above-mentioned purpose, the technical scheme that the utility model adopted are, a kind of tri-station isolating switch major loop insulating part comprises the main body of tubular being provided with contact rod in the main body, is provided with the earth shield net in the sidewall of main body; Symmetry is connected with two cantilevers on the sidewall of main body, and these two cantilevers are respectively arranged with erecting bed away from an end of main body, and these two erecting beds are provided with in the same way, is respectively arranged with camphane spare on these two erecting beds.

Main body, cantilever and erecting bed adopt poured with epoxy resin to form, and main body, cantilever, erecting bed, contact rod and all camphane spares form an integral body, the smooth surface of main body, cantilever and erecting bed, no cusp and corner angle.

The profile of main body is a spindle.

Erecting bed is provided with pattern draft towards the side of main body, and this pattern draft is 17 °.

The earth shield net is an axial symmetry rotation form, and its longitudinal section is a hyperbola, and the 7th down spare and the 8th down spare ground connection are crossed by earth shield Netcom.

The utility model insulating part adopts poured with epoxy resin to form; The camphane spare of mounting contact support is cast in the epoxy resin, guarantees the centre-to-centre spacing between camphane spare and the contact rod, contact supporting is installed after; Can guarantee the fracture distance between adjacent two contact supportings; Moving contact can accurately be moved, improved the reliability of isolating switch, and have the advantages that volume is little, simple and compact for structure, reliability is high, operating physical force is little.

Description of drawings

Fig. 1 is the structural representation of the utility model insulating part.

Fig. 2 is the structural representation of main body in the utility model insulating part.

Fig. 3 is the structural representation of earth shield net in the utility model insulating part.

Fig. 4 is the user mode figure of the utility model insulating part.

Among the figure, 1. main body, 2. contact rod, 3. first cantilever, 4. first erecting bed, the 5. first camphane spare; 6. second cantilever, 7. second erecting bed, the 8. second camphane spare, 9. the 3rd camphane spare, 10. the 4th camphane spare; 11. the 5th camphane spare, 12. the 6th camphane spares, 13. earth shield nets, 14. screwed holes, 15. switch contact supports; 16. moving contact, 17. insulating contact supports, 18. grounding contact supports, 19. the 7th down spares, 20. the 8th down spares.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.

As shown in Figure 1, the structure of the utility model insulating part comprises the main body 1 of tubular being provided with contact rod 2 in the endoporus of main body 1 that the profile of main body 1 is a spindle, is provided with earth shield net 13 in the sidewall of main body 1; The outside symmetry of main body 1 is connected with first cantilever 3 and second cantilever 6; The end face that the other end of first cantilever 3 is provided with first erecting bed, 4, the first erecting beds 4 is provided with the first camphane spare, 5, the first erecting beds 4 and is provided with pattern draft towards the side of main body 1, and this pattern draft is 17 °; The end face that the other end of second cantilever 6 is provided with second erecting bed, 7, the second erecting beds 7 is provided with the second camphane spare, 8, the second erecting beds 7 and is provided with pattern draft towards the side of main body 1, and this pattern draft is 17 °; First erecting bed 4 and second erecting bed 7 are provided with in the same way; First cantilever 3 deviates from and is respectively arranged with the below that the 5th camphane spare 11 and the 6th camphane spare 12, the six camphane spares 12 are positioned at the first camphane spare 5 on the end face of first erecting bed 4; Be respectively arranged with seal groove around the 5th camphane spare 11 and the 6th camphane spare 12; Second cantilever 6 deviates from and is respectively arranged with the below that the 3rd camphane spare 9 and the 4th camphane spare 10, the four camphane spares 10 are positioned at the second camphane spare 8 on the end face of second erecting bed 7, is respectively arranged with seal groove around the 3rd camphane spare 9 and the 4th camphane spare 10.Be evenly equipped with a plurality of screwed holes 14 respectively on two end faces of contact rod 2, as shown in Figure 2, earth shield net 13 is connected with the 8th camphane spare 20 with the 7th camphane spare 19 respectively.

The structure of earth shield net 13 is as shown in Figure 3 in the utility model insulating part, and earth shield net 13 has adopted axial symmetry rotation form, and its longitudinal section is a hyperbola; Earth shield net 13 is connected with the 8th down spare 20 with the 7th down spare 19 respectively.

This insulating part adopts poured with epoxy resin to form, and main body 1, contact rod 2, first cantilever 3, second cantilever 6, first erecting bed 4, second erecting bed 7, earth shield net 13 and all camphane spares form an integral body; Position in that three contact supportings are installed all is cast with down spare, easily the mounting contact support; The insulating part the inside is cast with earth shield net 13; The position of earth shield net 13 and end shape have determined along the discharge of insulator surface and the size of field intensity; Will make the field intensity inhomogeneities of conductor generation reduce to minimum through placing suitable position and choosing rational end shape, can effectively reduce the numerical value of maximum field strength.Because insulating part is placed on the air chamber the inside, when doing the insulation test, cusp on the insulating part and corner angle have very big influence to insulation, so the surface of insulating part must be smooth, and intact material, the insulating part planted agent does not have bubble, crackle; The insulating part surface can not go out a cusp and corner angle, must do fillet and handle; Insulating part also will guarantee enough creepage distances in addition.

The utility model tri-station isolating switch is used insulating part, except satisfying insulation property, and behind the also necessary assurance mounting contact support, the fracture distance between adjacent two contact supportings.As shown in Figure 4, the first down spare 5 is connected through fabrication hole with switch contact support 15 usefulness bolts; The second down spare 8 is connected through fabrication hole with grounding contact support 18 usefulness bolts; The screwed hole of the contact rod of cast is connected through fabrication hole with insulating contact support 17 usefulness bolts on the insulating part 5; Behind the mounting contact support, need to guarantee the size of the fracture distance A between switch contact support 15 and the insulating contact support 17, need guarantee that also fracture between insulating contact support 17 and the grounding contact support 18 is apart from the size of B.Can easily this insulating part and contact supporting be linked together with bolt, and can guarantee the distance between adjacent two contact supportings, moving contact 16 can be moved exactly.

After assembling is accomplished, with the insulating part assembled that assembles in air chamber; The 3rd down spare of pouring into a mould on the insulating part 9, the 4th down spare 10, the 5th camphane spare 11 are connected with the base plate of air chamber respectively through bolt with the 6th down spare 12.Seal groove around the 3rd down spare 9, the 4th down spare 10, the 5th camphane spare 11 and the 6th down spare 12 supplies the fitting tight circle to use, and is used to guarantee the sealing of air chamber.

Because what apply on the earth shield net 13 is electronegative potential; Can improve the inner field intensity of insulator; Analyze with optimizing through electric Field Calculation; The shape of earth shield net 13 and in this insulating part residing suitable position electric field is distributed more uniformly, and realize insulating part ground connection through the 7th down spare 19 on the earth shield net 13 and the 8th down spare 20.

The utility model insulating part volume is little, simple and compact for structure, reliability is high, operating physical force is little, has the supports contacts support, and function is accurately assembled in the connection of assurance tri-station isolating switch, isolation, three positions of ground connection.

Claims

1. a tri-station isolating switch major loop insulating part is characterized in that, comprises the main body (1) of tubular, is provided with contact rod (2) in the main body (1), is provided with earth shield net (13) in the sidewall of main body (1); Symmetry is connected with two cantilevers on the sidewall of main body (1), and these two cantilevers are respectively arranged with erecting bed away from an end of main body (1), and these two erecting beds are provided with in the same way, is respectively arranged with camphane spare on these two erecting beds.

2. tri-station isolating switch major loop insulating part according to claim 1; It is characterized in that; Said main body (1), cantilever and erecting bed adopt poured with epoxy resin to form; Main body (1), cantilever, erecting bed, contact rod (2) and all camphane spares form an integral body, the smooth surface of main body (1), cantilever and erecting bed, no cusp and corner angle.

3. tri-station isolating switch major loop insulating part according to claim 1 and 2 is characterized in that the profile of said main body (1) is a spindle.

4. tri-station isolating switch major loop insulating part according to claim 1 is characterized in that said erecting bed is provided with pattern draft towards the side of main body (1), and this pattern draft is 17 °.

5. tri-station isolating switch major loop insulating part according to claim 1; It is characterized in that; Said earth shield net (13) is axial symmetry rotation form, and its longitudinal section is a hyperbola, and earth shield net (13) is through the 7th down spare (19) and the 8th down spare (20) ground connection.