CN217486042U - Contact sleeve for 35kV environment-friendly gas insulated switchgear - Google Patents
Contact sleeve for 35kV environment-friendly gas insulated switchgear Download PDFInfo
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- CN217486042U CN217486042U CN202221194406.4U CN202221194406U CN217486042U CN 217486042 U CN217486042 U CN 217486042U CN 202221194406 U CN202221194406 U CN 202221194406U CN 217486042 U CN217486042 U CN 217486042U
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- conducting rod
- insulating sleeve
- insulated switchgear
- environment
- gas insulated
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Abstract
The utility model relates to a 35kV environmental protection gas insulation contact sleeve for cubical switchboard, including the conducting rod and wrap up the insulating sleeve in the conducting rod outer lane, insulating sleeve's outer lane is equipped with the sealed face perpendicular to the conducting rod axis, be equipped with a plurality of connecting screw holes of arranging along circumference on the sealed face, the one end of conducting rod is opened has a plurality of bolt holes, and the other end rigid coupling of conducting rod has the connecting plate, it has a plurality of circular overlap joint holes to open on the connecting plate, the both ends of insulating sleeve all are equipped with the corrugated surface concentric with the conducting rod axis, the utility model discloses a design into the corrugate at insulating sleeve both ends, reduced insulating sleeve's height when increasing creepage distance, can satisfy 35kV environmental protection gas cubical switchboard insulation requirement, can satisfy miniaturized design requirement again, can effectively reduce 35kV environmental protection gas cubical switchboard overall height; the utility model discloses help promoting behind the market to impel 35kV environmental protection gas insulated switchgear development process, improve the core technology of domestic equipment.
Description
Technical Field
The utility model relates to a cubical switchboard field especially relates to environmental protection gas insulation cubical switchboard field, specifically indicates a 35kV environmental protection contact sleeve for gas insulation cubical switchboard.
Background
At present, each mainstream manufacturer is in the development stage of a 35kV environment-friendly gas insulated switchgear, and the main purpose is to replace the 35kV sulfur hexafluoride gas insulated switchgear and reduce the emission of greenhouse gases. The known SF6 substitute gas comprises N2, dry air, C4F7N gas, C5F10O gas or mixed gas, no matter which gas is adopted for substitution, the insulating property is not good compared with that of SF6 gas, a connecting sleeve is used for connecting through flow of an upper air chamber and a lower air chamber of a 35kV environment-friendly gas (N2) insulating switch cabinet, the creep distance of an insulating piece on the connecting sleeve for the existing 35kV sulfur hexafluoride gas insulating switch cabinet is too small, and the use requirement of the 35kV environment-friendly gas insulating switch cabinet cannot be met.
Disclosure of Invention
The utility model discloses to prior art's not enough, provide a 35kV environmental protection contact sleeve pipe for gas insulated switchgear.
The utility model discloses a following technical scheme realizes, provides a 35kV gaseous insulation contact sleeve for cubical switchboard of environmental protection, including conducting rod and the insulation support of parcel in the conducting rod outer lane, insulation support's outer lane is equipped with conducting rod axis vertically sealed face, be equipped with a plurality of connecting screw holes of arranging along circumference on the sealed face, open the one end of conducting rod has a plurality of bolt hole, and the other end rigid coupling of conducting rod has the connecting plate, it has the circular overlap joint hole of a plurality of to open on the connecting plate, insulation support's both ends all are equipped with the endocentric corrugated surface of conducting rod axis.
The laminating of sealed face is on the baffle and passes connecting screw hole through the bolt and realize connecting in this scheme, realize the independent sealed of upper and lower air chamber, bolt hole and circular overlap joint hole are used for the electric connection of upper and lower air chamber respectively, the insulating sleeve both ends design into the corrugate, reduced insulating sleeve's height when increasing creepage distance, can satisfy the insulating requirement of 35kV environmental protection gas switch cabinet, can satisfy miniaturized design requirement again, can effectively reduce 35kV environmental protection gas switch cabinet overall height.
Preferably, a plurality of bolt inserts are embedded in the sealing surface, and the connecting threaded holes are formed in the bolt inserts. The connecting threaded hole in the scheme is formed in the bolt insert, so that threaded connection is achieved through the bolt insert with better strength and hardness.
Preferably, the cross section of the conductive rod is gradually increased from the middle to the two ends. The cross-section of conducting rod in this scheme is crescent to both ends from the centre, prevents conducting rod and insulation support's axial displacement on the one hand, and on the other hand conducting rod both ends cross-section is great, is convenient for both ends to realize electrically conductive connection.
Preferably, the sealing surface is provided with a sealing groove, and an O-shaped sealing ring is arranged in the sealing groove. The O-shaped sealing ring arranged in the scheme is used for improving the sealing performance.
Preferably, the insulating sleeve is an epoxy resin sleeve. The insulating sleeve in this scheme is the epoxy sleeve pipe, consequently can be through epoxy integration cast moulding to improve power of holding tightly and the leakproofness with the conducting rod.
Preferably, the outer ring of the insulating sleeve is provided with an annular boss protruding outwards, and the sealing surface is arranged on one side of the annular boss. The sealing face in this scheme sets up in one side of annular boss to realize seal installation through sealed face, can effectively improve the installation effectiveness, reduce the processing cost.
Preferably, the outer ring of the conducting rod is provided with a passivation surface. The passivation face that sets up in this scheme can improve the power of holding tightly and the leakproofness of insulator sleeve and conducting rod on the one hand, also can prevent upper and lower air chamber gas along conducting rod and insulator sleeve faying face cluster gas.
Preferably, the wave length of the corrugated surface is smaller than the wave height. The wave length of corrugated surface is less than the wave height in this scheme to increased the degree of depth of corrugated surface on finite space, improvement creepage distance that can be better.
The beneficial effects of the utility model are that: the utility model discloses a 35kV environmental protection gas insulated switchgear uses contact sleeve, through designing into the ripple shape at the insulating sleeve both ends, reduced the height of insulating sleeve when increasing creepage distance, can satisfy 35kV environmental protection gas insulated switchgear insulation requirement, can satisfy miniaturized design requirement again, can effectively reduce 35kV environmental protection gas insulated switchgear overall height; contact sleeve pipe design single face seal groove, cooperation sealing washer are installed in the gas-over air chamber, realize the independent sealed of upper and lower air chamber, the utility model discloses help promoting 35kV environmental protection gas insulated switchgear development process after the popularization market, improve domestic equipment's core technique.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a cross-sectional view taken along plane A-A of FIG. 1 in accordance with the present invention;
fig. 3 is a top view of the present invention;
FIG. 4 is an enlarged view of the portion B of FIG. 2 according to the present invention;
FIG. 5 is an enlarged view of the portion C of FIG. 2 according to the present invention;
shown in the figure:
1. the conductive rod, 2, insulating sleeve, 3, bolt inserts, 4, seal groove, 5, bolt hole, 6, O shape sealing washer, 7, ripple face, 8, connecting plate, 9, sealed face, 10, circular overlap joint hole.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1-5, the utility model discloses a 35kV gaseous insulation cubical switchboard of environmental protection is with contact sleeve pipe, including conducting rod 1 and the insulating sleeve 2 of parcel in 1 outer lane of conducting rod, conducting rod 1 is electrically conductive metal bar, generally is the bar copper, the cross-section of conducting rod 1 is crescent from the centre to both ends, and each cross-section is circular.
One end of the current conducting rod 1 is provided with a plurality of bolt holes 5, and the end surface of one end of the current conducting rod is provided with two bolt holes M12 with the distance of 40mm and used for being connected with a conductor at the power supply side of the upper air chamber; the other end of the conducting rod 1 is fixedly connected with a connecting plate 8, the connecting plate 8 is perpendicular to the end face, a plurality of circular overlap connection holes 10 are formed in the connecting plate 8, in the embodiment, the connecting plate 8 is provided with two circular overlap connection holes 10 of phi 13 with the distance of 40mm, and the circular overlap connection holes are used for being connected with the conductor on the outlet side of the lower air chamber.
The insulating sleeve 2 is an epoxy resin sleeve, and the outer ring of the conductive rod 1 is provided with a passivation surface. And after the conducting rod 1 is passivated, a die is opened according to the designed appearance, and epoxy resin is integrally cast and molded, so that the insulating sleeve 2 is connected with the conducting rod 1.
The outer ring of the insulating sleeve 2 is provided with a sealing surface 9 perpendicular to the axis of the conductive rod 1, the outer ring of the insulating sleeve 2 is provided with an annular boss protruding outwards, and the sealing surface 9 is arranged on one side of the annular boss. The sealing surface 9 is provided with a plurality of connecting threaded holes which are distributed along the circumferential direction, in the embodiment, the sealing surface 9 is inlaid with a plurality of bolt inserts 3, the connecting threaded holes are formed in the bolt inserts 3, and the bolt inserts 3 are metal pieces, so that the strength of threads is improved.
Set up 6 bolt inserts 3 in this embodiment, connecting thread hole is M5's screw hole, and bolt inserts 3 adopts passivation technology to handle, and 6 bolt inserts 3 open mould and epoxy integration casting moulding according to the appearance of design after the passivation treatment, drop when effectively preventing bolt inserts 3 to screw up the atress.
The sealing surface 9 is provided with a sealing groove 4, an O-shaped sealing ring 6 is arranged in the sealing groove 4, and the O-shaped sealing ring 6 is designed according to 30% compression. Before the contact sleeve installation, need clean sealing face 9 and seal groove 4 with insulating clean paper and dry, paint vacuum silicone grease to adorn O shape sealing washer 6 in seal groove 4, thereby utilize 6 bolt inserts 3 will the contact sleeve installs in the air chamber, and sealed face 9 is installed downwards.
And corrugated surfaces 7 concentric with the axis of the conductive rod 1 are arranged at two ends of the insulating sleeve 2. The corrugated surface 7 is diverged along the center, and can also be understood as that a plurality of circles of annular sunken grooves or annular bulges are arranged at two ends of the insulating sleeve 2, the wavelength of the corrugated surface 7 is smaller than the wave height, the creepage distance is increased, and the height of the contact sleeve is reduced; the total height of the sleeve is 356mm, so that the creepage distance is more than or equal to 270mm, and the ground insulation requirement of a 35kV environment-friendly gas (N2) insulation switch cabinet is met.
Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should not depart from the spirit of the present invention, and shall also belong to the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a 35kV environmental protection gas insulation is contact sleeve pipe for cubical switchboard which characterized in that: including conducting rod (1) and insulating sleeve (2) of parcel in conducting rod (1) outer lane, the outer lane of insulating sleeve (2) be equipped with the sealed face (9) of conducting rod (1) axis vertically, be equipped with a plurality of connecting thread holes of arranging along circumference on sealed face (9), open the one end of conducting rod (1) has a plurality of bolt hole (5), and the other end rigid coupling of conducting rod (1) has connecting plate (8), it has circular overlap joint hole (10) of a plurality of to open on connecting plate (8), the both ends of insulating sleeve (2) all are equipped with the concentric corrugated surface (7) of conducting rod (1) axis.
2. The contact bushing for the 35kV environment-friendly gas insulated switchgear, according to claim 1, wherein: a plurality of bolt inserts (3) are embedded in the sealing surface (9), and the connecting threaded holes are formed in the bolt inserts (3).
3. The contact bushing for the 35kV environment-friendly gas insulated switchgear, according to claim 1, wherein: the cross section of the conductive rod (1) is gradually increased from the middle to the two ends.
4. The contact bushing for the 35kV environment-friendly gas insulated switchgear, according to claim 1, wherein: a sealing groove (4) is formed in the sealing surface (9), and an O-shaped sealing ring (6) is arranged in the sealing groove (4).
5. The contact bushing for the 35kV environment-friendly gas insulated switchgear, according to claim 1, wherein: the insulating sleeve (2) is an epoxy resin sleeve.
6. The contact bushing for the 35kV environment-friendly gas insulated switchgear, according to claim 1, wherein: the outer ring of the insulating sleeve (2) is provided with an annular boss protruding outwards, and the sealing surface (9) is arranged on one side of the annular boss.
7. The connection sleeve for the 35kV environment-friendly gas insulated switchgear according to claim 1, characterized in that: the outer ring of the conducting rod (1) is provided with a passivation surface.
8. The connection sleeve for the 35kV environment-friendly gas insulated switchgear according to claim 1, characterized in that: the wave length of the corrugated surface (7) is smaller than the wave height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221194406.4U CN217486042U (en) | 2022-05-19 | 2022-05-19 | Contact sleeve for 35kV environment-friendly gas insulated switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221194406.4U CN217486042U (en) | 2022-05-19 | 2022-05-19 | Contact sleeve for 35kV environment-friendly gas insulated switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217486042U true CN217486042U (en) | 2022-09-23 |
Family
ID=83309855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221194406.4U Active CN217486042U (en) | 2022-05-19 | 2022-05-19 | Contact sleeve for 35kV environment-friendly gas insulated switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217486042U (en) |
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2022
- 2022-05-19 CN CN202221194406.4U patent/CN217486042U/en active Active
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