CN202840351U - Solid insulation sleeve - Google Patents
Solid insulation sleeve Download PDFInfo
- Publication number
- CN202840351U CN202840351U CN201220454538.6U CN201220454538U CN202840351U CN 202840351 U CN202840351 U CN 202840351U CN 201220454538 U CN201220454538 U CN 201220454538U CN 202840351 U CN202840351 U CN 202840351U
- Authority
- CN
- China
- Prior art keywords
- internal copper
- copper part
- shielding part
- insulating barrier
- voltage shielding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a solid insulation sleeve which comprises an internal copper part (1), an insulation layer (3) and the like. At least one annular high voltage shielding part (2) which is connected with the voltage shielding part is arranged on the position, which is close to the side of the protruding end of the internal copper part (1) in the insulation layer (3), of the internal copper part (1). In the insulation layer (3), at least one thin wall cylindrical low voltage shielding part (4) is sleeved on the internal copper part (1). The low voltage shielding part (4) is insulated from the internal copper part (1) and the high voltage shielding part (2). Compared with the prior art, the solid insulation sleeve provided by the utility model solves the problem that the electric field strength of the junction point of different mediums of the protruding end of the original solid insulation sleeve is not uniform, which easily leads to partial discharge.
Description
Technical field
The utility model relates to power transmission and distribution switchgear manufacturing technology field, and especially a kind of employing solid and gas mix insulation are conduct electricity the solid insulating sleeve that connects into and out of cable.
Background technology
Solid insulation ring main unit is the focus and emphasis technical equipment of present power equipment development, and solid insulation ring main unit all need be used advancing, going out cable couples together, form the sleeve pipe of link circuit, this sleeve pipe can be made an integral body with other insulating part, also can be after processing separately again with the use that is assembled together of other insulating part, sleeve pipe is as realizing electric equipment and the extraneous annex that is connected, usually its end is the standard taper structure, be connected with the electric cable accessories of standard, the shape of an other end then can be according to the different requirements of producer, be designed to different planforms, the part that exposes of copper rod wherein, its planform is all different, and it act as other metallic conduction spare of overlap joint, and the mode that common overlapped points adopts bolt to add nut is fixed.
The sleeve pipe of supply substantially all is the form that becomes solid insulation with the epoxy resin pressure injection in the market.Wherein have a kind of one to be the cable outlet cone, the other end is the sleeve pipe of barreled leading-out terminal, and this sleeve pipe includes an internal copper part, and described internal copper part all is cast in the middle of the insulating material except two ends.The described internal copper part end that the cable outlet cone of described sleeve pipe is one has internal thread, conveniently be connected with electric cable accessories, the described internal copper part end that the barreled leading-out terminal of described sleeve pipe is one stretches out outside the described insulating barrier, the extension shape can according to the different requirements of producer, be designed to different planforms.Because its two ends all exist the point of interface of resin, copper spare and air or other medium, according to electrical principle, this point of interface is the relatively strong place of electric field, especially copper spare has no idea to realize in the situation of fully fillet processing, electric field strength is stronger, when if this point of interface places vacuum or sulphur hexafluoride insulating gas, impact on product is less, if but point of interface is in the air, when the insulating barrier outer surface is coated with again in conduction or the semiconductive solid insulation ring main unit, be easy to occur the situation of over the ground disruptive discharge around the point of interface.Because shielding processing has been carried out all pressing fully in electric cable accessories inside, electric field around the outer dew point of the copper rod of the end that sleeve pipe cooperates with electric cable accessories had got sufficient optimization, a but end that directly overlaps with copper rod, existing product does not all carry out electric Field Optimization basically to be processed, therefore, this structure of not carrying out Field Optimum Design is coated with again conduction for the insulating barrier outer surface or semiconductive solid insulation ring main unit is very dangerous, very easily cause the decline of properties of product, jeopardize power supply safety.
The utility model content
Problem to be solved in the utility model provides a kind of point of interface electric field that can solve existing solid insulating sleeve copper rod exposed junction and causes easily by force the solid insulating sleeve that the insulating capacity of product descends.
In order to address the above problem, the technical scheme that the utility model provides is: this solid insulating sleeve, include internal copper part and insulating barrier etc., be provided with the high voltage shield of at least one annular that is connected with described internal copper part in the inside of described insulating barrier near the described internal copper part of described internal copper part external part one side; Also have the low pressure shielding part of at least one thin ancient piece of jade, round, flat and with a hole in its centre tubular to be enclosed within on the described internal copper part in the inside of described insulating barrier, mutually insulated between described low pressure shielding part and described internal copper part and the described high voltage shield.
Because adopt technique scheme, the utility model compared with prior art has following beneficial effect:
The electric field strength of the nonstandard connection exposed junction of internal copper part of the present utility model has had preferably to be improved, and has improved the insulating capacity of this product, Effective Raise Supply Security.
Description of drawings
Fig. 1 is the overall schematic of the utility model embodiment solid insulating sleeve.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
This solid insulating sleeve shown in Figure 1 includes the variform internal copper part 1 in two and insulating barrier 3 thereof; Have internal thread on one the end face of internal copper part 1, internal copper part 1 major part is cast in the inside of insulating barrier 3, and the end that has one of internal thread does not have insulating barrier 3 to cover, and this insulating barrier 3 profiles are taper, are connected with electric cable accessories.Stretch out outside the insulating barrier 3 internal copper part 1 other end, and the extension shape then can be designed to different planforms according to the different requirements of producer, and this insulating barrier profile is barrel-shaped; Be provided with the high voltage shield 2 of an annular that is connected with internal copper part 1 near the internal copper part 1 of internal copper part 1 external part one side in the inside of insulating barrier 3; Also have the low pressure shielding part 4 of a thin ancient piece of jade, round, flat and with a hole in its centre tubular to be enclosed within on the internal copper part 1 mutually insulated between low pressure shielding part 4 and internal copper part 1 and the high voltage shield 2 in the inside of insulating barrier 3.Wherein high voltage shield 2 not only available electric conducting material make, also available semiconductive material is made, and can adopt welding manner to be connected between high voltage shield 2 and the internal copper part 1.
Claims (1)
1. solid insulating sleeve, include internal copper part (1) and insulating barrier (3), it is characterized in that: the high voltage shield (2) that is provided with at least one annular that is connected with described internal copper part (1) in the inside of described insulating barrier (3) near the described internal copper part (1) of described internal copper part (1) external part one side; Also have the low pressure shielding part (4) of at least one thin ancient piece of jade, round, flat and with a hole in its centre tubular to be enclosed within on the described internal copper part (1) mutually insulated between described low pressure shielding part (4) and described internal copper part (1) and the described high voltage shield (2) in the inside of described insulating barrier (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220454538.6U CN202840351U (en) | 2012-09-07 | 2012-09-07 | Solid insulation sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220454538.6U CN202840351U (en) | 2012-09-07 | 2012-09-07 | Solid insulation sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202840351U true CN202840351U (en) | 2013-03-27 |
Family
ID=47951969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220454538.6U Expired - Lifetime CN202840351U (en) | 2012-09-07 | 2012-09-07 | Solid insulation sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202840351U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882150A (en) * | 2012-09-07 | 2013-01-16 | 北海银河开关设备有限公司 | Solid insulating sleeve |
-
2012
- 2012-09-07 CN CN201220454538.6U patent/CN202840351U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882150A (en) * | 2012-09-07 | 2013-01-16 | 北海银河开关设备有限公司 | Solid insulating sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |