CN203722114U - Outdoor pole-mounted switch platform with zero-potential surface-layer solid-sealed polar poles - Google Patents
Outdoor pole-mounted switch platform with zero-potential surface-layer solid-sealed polar poles Download PDFInfo
- Publication number
- CN203722114U CN203722114U CN201420110222.4U CN201420110222U CN203722114U CN 203722114 U CN203722114 U CN 203722114U CN 201420110222 U CN201420110222 U CN 201420110222U CN 203722114 U CN203722114 U CN 203722114U
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- China
- Prior art keywords
- pole
- metal shell
- top layer
- zero potential
- outdoor
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- 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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- 239000003822 epoxy resin Substances 0.000 claims description 10
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- 239000004412 Bulk moulding compound Substances 0.000 description 1
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Abstract
The utility model relates to an outdoor pole-mounted switch platform with zero-potential surface-layer solid-sealed polar poles. The outdoor pole-mounted switch platform comprises a metal shell; the metal shell is provided with wire entering bushings and wire outgoing bushings; the solid-sealed polar poles are arranged inside the metal shell; the inner ends of the wire entering bushings and the inner ends of the wire outgoing bushings are respectively in sealed connection with the solid-sealed polar poles; a vacuum arc extinguish chamber and a cavity are arranged in each solid-sealed polar pole; and the inner layer of each solid-sealed polar pole is made of an insulating material, and the surface layer of each solid-sealed polar pole is made of a conductive material and is effectively connected with a zero-potential object. According to the outdoor pole-mounted switch platform of the utility model, the surface layers of the solid-sealed polar poles and the metal shell are both in zero potential, so that air between the surface layers of the solid-sealed polar poles and the metal shell enables no insulating effect, and therefore, no insulating distance is required between the solid-sealed polar poles as well as between the solid-sealed polar poles and the metal shell; and mounting distance between traditional solid-sealed polar poles can be shortened according to actual processing and use requirements, and each phase of polar poles can approach each other, and the polar poles and the metal shell can approach each other to an extend that the surfaces of the polar poles and the metal shell can contact with each other, and therefore, design requirements for miniaturization of a switch can be satisfied.
Description
Technical field
The utility model relates to a kind of outdoor pole top switch platform, specifically the outdoor pole top switch platform of a kind of zero potential top layer pole.
Background technology
Outdoor pole top switch is one of electric equipment being most widely used in electric power system, in order to meet different application demands, on market, there is automatic circuit on the post of various ways, circuit breaker and on-load switch, outdoor pole top switch due to when operation environment of living in severe, because of dust storm, salt fog, the factors such as condensation, cause corrosion and the wearing and tearing of insulating barrier, thereby or the minimizing of creepage distance cause insulation breakdown to lead to a disaster.
In prior art; in open air, press on-pole switch to adopt normally solid insulation or compound inslation mode more; due in service at switch; the current potential on pole surface is non-vanishing; insulation level between primary conductive height current potential and the metal shell zero potential of its pole inside is: solid insulation: solid insulating material (be to pass through cast in pole, closely wrap up epoxy resin or the silicon rubber of primary conductive body)+air or SF6; Compound inslation: air or the normally tabular epoxy resin of SF6+ solid insulating material, DMC, nylon etc. insulating material+air or SF6.
For ensureing necessary insulation distance, the switch of air dielectric is defectiveness at volume with aspect the cost therefore bringing, and meanwhile, the condensation phenomenon that is difficult to avoid, has also brought potential insulation breakdown risk to air insulation.And the switch of SF6 gas-insulated mode, although can be suitable for Miniaturization Design, as a kind of greenhouse gas, the use of SF6 gas is subject to increasing restriction.In addition, the electric property of SF6 gas is subject to the impurity effects such as electric field uniformity coefficient and moisture large especially, thereby the requirement of the sealing to switch casing, component structure and the quality of SF6 gas own is quite strict, and the accident causing because of SF6 gas leakage is every year not within minority.
Utility model content
For outdoor pole top switch in above-mentioned prior art due to when operation environment of living in severe, because of dust storm, salt fog, the factors such as condensation, cause corrosion and the wearing and tearing of insulating barrier, thereby or the minimizing of the creepage distance defect that causes insulation breakdown to lead to a disaster, the utility model provides the outdoor pole top switch platform of a kind of zero potential top layer pole.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
The outdoor pole top switch platform of a kind of zero potential top layer pole, comprise metal shell, metal shell is provided with entrance bushing and outlet casing tube, the inside of metal shell is provided with pole, entrance bushing the inner and outlet casing tube the inner are tightly connected with pole respectively, are provided with vacuum interrupter and die cavity in described pole, and the internal layer of described pole is made up of insulating material, the top layer of pole is by making by electric conducting material, and top layer is effectively connected with zero potential object;
The internal layer of described pole is epoxy resin or silicon rubber;
The top layer of described pole is metal or semiconductor;
In switch running, the top layer ground connection of described pole is in zero potential;
Described entrance bushing and outlet casing tube, outside metal shell, are tightly connected with the leading-out terminal of the pole in metal shell;
The external insulation layer material of described entrance bushing and outlet casing tube is epoxy resin, silicon rubber or pottery;
In the end of incoming cables of described pole, there is current transformer;
In described entrance bushing and outlet casing tube, be provided with capacitive battery pressure sensor;
Insulated tension pole in described die cavity is provided with resistance-type voltage sensor;
The fixed contact of described vacuum interrupter is fixedly connected with in pole with leading-out terminal, the moving contact of described vacuum interrupter is connected by being flexible coupling in described die cavity with end of incoming cables, in described die cavity, be provided with insulated tension pole, insulated tension pole is inner to be connected with described moving contact, insulated tension pole outer end is connected with transmission mechanism, between insulated tension pole outer end and the collar extension of described die cavity, seals by electro-insulating rubber part.
The beneficial effects of the utility model:
The outdoor pole top switch platform of the zero potential top layer pole that the utility model provides, in running, the top layer of pole and metal shell are all in zero potential, air between pole surface and metal shell does not play any insulating effect, thereby between pole, between pole and metal shell, no longer need insulation distance, therefore, can and use needs according to reality processing, dwindle the mounting distance between traditional pole, even can be by each phase pole, pole and metal shell are drawn close to surface and are contacted, to reach the requirement of switch Miniaturization Design,
Reduce the mould manufacture difficulty of pole and improved casting yield: simultaneously, because pole surface is all in zero potential, cluster parachute design in order to the pole that increases creepage distance also no longer needs, because cluster parachute part is the part that easily occurs defect in mould manufacture and cast, remove the design of cluster parachute part, the design of pole mould is simplified, and the rate of finished products of cast increases;
Improve switch to adaptive capacity to environment: because the current potential in whole space between shell inner surface and pole surface is zero, medium air between the two or SF6 performance change can not have any impact to insulation property, and the variation of dielectric insulation performance often environmental factor cause, moist, salt fog, seepage etc., therefore this switch is wider to the accommodation to environment;
Production technology and the cost of housing are simplified: owing to not using SF6 gas, metal shell does not need sealing, thereby housing can be assembled metal formula, does not need mould punching, has reduced cost.
Brief description of the drawings
Fig. 1 surface structure schematic diagram of the present utility model;
Fig. 2 pole of the present utility model and inlet-outlet sleeve generalized section;
Reference numeral: 1, metal shell, 2, pole, 21, vacuum interrupter, 211, fixed contact, 212, moving contact, 22, internal layer, 23, top layer, 24, leading-out terminal, 25, end of incoming cables, 26, current transformer, 27, insulated tension pole, 271, insulated tension pole the inner, 272, insulated tension pole outer end, 28, die cavity, 29, be flexible coupling, 3, entrance bushing, 31, entrance bushing the inner, 4, outlet casing tube, 41, outlet casing tube the inner.
Embodiment
Below in conjunction with embodiment, the utility model is further elaborated.
As shown in the figure: the outdoor pole top switch platform of a kind of zero potential top layer pole, comprise metal shell 1, metal shell 1 is provided with entrance bushing 3 and outlet casing tube 4, the inside of metal shell 1 is provided with pole 2, entrance bushing inner 31 and outlet casing tube the inner 41 are tightly connected with pole 2 respectively, in described pole 2, be provided with vacuum interrupter 21 and die cavity 28, the internal layer 22 of described pole 2 is made up of insulating material, the top layer 23 of pole 2 is by making by electric conducting material, and top layer 23 is effectively connected with zero potential object; The fixed contact 211 of described vacuum interrupter 21 is fixedly connected with in pole 2 with leading-out terminal 24, the moving contact 212 of described vacuum interrupter 21 and end of incoming cables 25 29 are connected by being flexible coupling in described die cavity 28, in described die cavity 28, be provided with insulated tension pole 27, insulated tension pole inner 271 is connected with described moving contact 212, insulated tension pole outer end 272 is connected with transmission mechanism, between insulated tension pole outer end 272 and the collar extension of described die cavity 28, seals by electro-insulating rubber part;
The internal layer 22 of described pole 2 is epoxy resin or silicon rubber; The top layer 23 of described pole 2 is metal or semiconductor; Top layer 23 ground connection of described pole 2 are in zero potential; Described entrance bushing 3 and outlet casing tube 4, outside metal shell, are tightly connected with the leading-out terminal 24 of the pole 2 in metal shell; The external insulation layer material of described entrance bushing 3 and outlet casing tube 4 is epoxy resin, silicon rubber or pottery; In the end of incoming cables 25 of described pole 2, there is current transformer; In described entrance bushing 3 and outlet casing tube 4, be provided with capacitive battery pressure sensor; Insulated tension pole 27 in described die cavity 28 is provided with resistance-type voltage sensor.
Pole, entrance bushing, outlet casing tube, transmission mechanism and even the whole Switch main body of this on-pole switch platform, can adopt standardization, modularized design; In structural design, consider not to be with manual closing mechanism, permanent magnetism band manual closing mechanism etc. supporting with various operating mechanism spring motor drive mechanisms, hand spring actuation mechanism, permanent magnetism containing monostable and bistable state; Various operating mechanisms are by driven Design and standardized Switch main body combine together flexibly;
Pole adopts traditional sealing mode to add can electric conducting material metal or semiconductor surface layer, first adopt insulating material as epoxy resin or silicon rubber etc. by vacuum interrupter and upper lower wire end sealing in pole, then on the pole surface of sealing, add layer of conductive material layer, as spray the metal surface of the about 1.5mm of one deck, or the thick semiconductor silicon rubber of the about 3mm of second pouring one deck, in total process of assembling, the superficial layer effective grounding of pole is connected with metal shell, thereby ensure that switch is in running, the surface of pole is all the time in zero potential; Be flexible coupling, insulated tension pole is arranged in pole die cavity, insulated by rubber seal in die cavity and outlet casing tube junction, with rubber parts, moving component is enclosed in die cavity as insulated tension pole, 2 openends of rubber parts use respectively securing member press seal in the die cavity mouth of pole and one end of insulated tension pole, and in the time that insulated tension pole does divide-shut brake motion, the insulated tension pole end of rubber parts can move along with insulated tension pole;
And housing is assembled metal formula, do not need mould punching, owing to not using SF6 gas, do not need sealing yet, reduce cost, also reduce fault that sealing leak problem brings and the probability of accident; By pole is generally housed in housing, metal or the semiconductor layer on housing protection pole surface are not subject to dust storm, salt fog, the impact of unfirmly closing, to ensure pole superficial layer conduction continuity, at switch running superficial layer all the time in zero potential, housing plays support simultaneously, location, and the effect of ground connection are installed;
Metal shell has entrance bushing and outlet casing tube outward, and built-in current instrument transformer in entrance bushing also can be by actual demand, built-in condenser voltage sensor in inlet-outlet sleeve, and the inner of inlet-outlet sleeve is tightly connected with the upper lower wire end of pole respectively;
Be positioned at the insulated tension pole of pole die cavity, according to actual needs in-built electrical resistive voltage sensor;
The outer pole die cavity end of metal shell can by different be in transmission connection with all kinds of market on current mechanism spring mechanism, permanent magnet mechanisms etc. are connected, to realize deciliter action of switch.
And the zero potential top layer pole outdoor pole top switch that the utility model relates to, due in service at switch, the current potential on pole surface is zero, insulation level between the primary conductive height current potential of its pole inside and sealing post pole and metal shell zero potential is only: solid insulating material (is by cast in pole, closely epoxy resin or the silicon rubber of parcel primary conductive body), this solid insulating material, between the inner primary conductive body of pole and pole surface conductance layer, independently plays insulating effect.Thereby make is without any need for gas-insulated medium effect between pole surface and metal shell.
Claims (10)
1. the outdoor pole top switch platform of a zero potential top layer pole, comprise metal shell (1), metal shell (1) is provided with entrance bushing (3) and outlet casing tube (4), the inside of metal shell (1) is provided with pole (2), entrance bushing the inner (31) and outlet casing tube the inner (41) are tightly connected with pole (2) respectively, in described pole (2), be provided with vacuum interrupter (21) and die cavity (28), it is characterized in that: the internal layer (22) of described pole (2) is made up of insulating material, the top layer (23) of pole (2) is by making by electric conducting material, and top layer (23) are effectively connected with zero potential object.
2. the outdoor pole top switch platform of zero potential as claimed in claim 1 top layer pole, is characterized in that: the internal layer (22) of described pole (2) is epoxy resin or silicon rubber.
3. the outdoor pole top switch platform of zero potential as claimed in claim 1 top layer pole, is characterized in that: the top layer (23) of described pole (2) is metal or semiconductor.
4. the outdoor pole top switch platform of zero potential as claimed in claim 1 top layer pole, is characterized in that: in switch running, top layer (23) effective grounding of described pole (2) is in zero potential.
5. the outdoor pole top switch platform of zero potential as claimed in claim 1 top layer pole, it is characterized in that: described entrance bushing (3) and outlet casing tube (4), outside metal shell, are tightly connected with the leading-out terminal (24) of the pole (2) in metal shell.
6. the outdoor pole top switch platform of zero potential as claimed in claim 1 top layer pole, is characterized in that: the external insulation layer material of described entrance bushing (3) and outlet casing tube (4) is epoxy resin, silicon rubber or pottery.
7. the outdoor pole top switch platform of zero potential as claimed in claim 1 top layer pole, is characterized in that: in the end of incoming cables (25) of described pole (2), have current transformer.
8. the outdoor pole top switch platform of zero potential as claimed in claim 1 top layer pole, is characterized in that: in described entrance bushing (3) and outlet casing tube (4), can be provided with capacitive battery pressure sensor.
9. the outdoor pole top switch platform of zero potential as claimed in claim 1 top layer pole, is characterized in that: on the insulated tension pole (27) in described die cavity (28), can be provided with resistance-type voltage sensor.
10. the outdoor pole top switch platform of zero potential as claimed in claim 1 top layer pole, it is characterized in that: the fixed contact (211) of described vacuum interrupter (21) is fixedly connected with in pole (2) with leading-out terminal (24), the moving contact (212) of described vacuum interrupter (21) is connected by be flexible coupling (29) in described die cavity (28) with end of incoming cables (25), in described die cavity (28), be provided with insulated tension pole (27), insulated tension pole the inner (271) is connected with described moving contact (212), insulated tension pole outer end (272) is connected with transmission mechanism, between the collar extension of insulated tension pole outer end (272) and described die cavity (28), seal by electro-insulating rubber part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110222.4U CN203722114U (en) | 2014-03-12 | 2014-03-12 | Outdoor pole-mounted switch platform with zero-potential surface-layer solid-sealed polar poles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110222.4U CN203722114U (en) | 2014-03-12 | 2014-03-12 | Outdoor pole-mounted switch platform with zero-potential surface-layer solid-sealed polar poles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722114U true CN203722114U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420110222.4U Expired - Lifetime CN203722114U (en) | 2014-03-12 | 2014-03-12 | Outdoor pole-mounted switch platform with zero-potential surface-layer solid-sealed polar poles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203722114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944096A (en) * | 2014-03-12 | 2014-07-23 | 库柏爱迪生(平顶山)电子科技有限公司 | Outdoor pole top switch platform with zero-potential surface layer solid-sealed polar poles |
-
2014
- 2014-03-12 CN CN201420110222.4U patent/CN203722114U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944096A (en) * | 2014-03-12 | 2014-07-23 | 库柏爱迪生(平顶山)电子科技有限公司 | Outdoor pole top switch platform with zero-potential surface layer solid-sealed polar poles |
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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: 20140716 |