CN201886841U

CN201886841U - Novel compound post insulator

Info

Publication number: CN201886841U
Application number: CN2010205466471U
Authority: CN
Inventors: 王伟; 黄璜
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-29
Filing date: 2010-09-29
Publication date: 2011-06-29
Anticipated expiration: 2020-09-29

Abstract

A novel compound post insulator comprises an upper metal fitting 1, an epoxy glass fiber pipe 2, a silicone rubber umbrella skirt 3, a creepage sheath 4 and a lower metal fitting 5. A plurality of ring-shaped bodies 6 and electric arc barrier layers 7, which are used for increasing the longitudinal creepage distance are arranged on the creepage sheath 4; in addition, the ring-shaped bodies 6 and the electric arc barrier layers 7 aim at increasing the inner wall creepage distance and the air arcing distance of a hollow tube and preventing the inner wall surface flashover or air disruptive discharge when condensation occurs. Air holes 8 are formed on the electric arc barrier layers 7, and the air holes 8 achieve the function of enabling the air pressure inside the creepage sheath 4 to be uniform when the creepage sheath 4 is filled with high pressure gas, so that the high pressure gas forces the outer wall of the creepage sheath 4 to be tightly stuck to the inner wall of the glass fiber pipe 2, and the bonding is firm. The creepage sheath 4 is made of rubber material or elastic plastic.

Description

A kind of NEW TYPE OF COMPOSITE post insulator

Technical field

The utility model relates to a kind of high pressure composite post insulator.

Background technology

Along with improving constantly of China's industrialization degree, air environmental pollution also is on the rise, and the porcelain or the glass insulator pollution flashover accident that are used for the power transmission and transformation external insulation increase year by year.And the composite insulator of making of silicon rubber and epoxy glass more and more is subjected to the welcome of vast power department owing to have good antifouling property.What composite insulator bore mechanical load is epoxy glass plug, owing to be subjected to the restriction of production technology, can only produce at present diameter both at home and abroad is the following plug of 120mm, can not satisfy the required composite post insulator requirement of mechanical strength of 220kv and above electric pressure.The plug of now producing 220kv and above composite post insulator mainly contains three kinds of forms:

1, with the porcelain rod as plug; Its shortcoming is yielding in the major diameter porcelain rod sintering procedure, and sintering is inhomogeneous, and rate of finished products is low, energy consumption is big, and porcelain core rod shock resistance is poor, and weight is big.

2, twine the epoxy resin fiberglass dilated diameter as plug at diameter 120mm mandrel outer; Its shortcoming is that this major diameter plug will the moulding of branch multi-lay winding, and the interlayer bonding interface easily forms air gap, and the expense material of taking a lot of work, the cost height, and price is expensive.

3, with the epoxy resin fiberglass pipe of filling insulating gas as plug; This composite post insulator of inflating in hollow pipe has the anxiety of gas leakage, and in service must regularly the detection increased maintenance workload, and the user is unwilling to accept.

Therefore, all there is certain defective in the composite post insulator of making of above-mentioned three kinds of plugs.

Summary of the invention

The utility model is at above-mentioned present situation, aim to provide a kind of good electric property, mechanical strength height, exempt to fill insulating gas, do not have leak, non-maintaining NEW TYPE OF COMPOSITE post insulator.

A kind of NEW TYPE OF COMPOSITE post insulator described in the utility model by last metal-ware 1, epoxy fiberglass tubes 2, silicon rubber full skirt 3, increase and climb sheath 4 and following metal-ware 5 is formed.Increase and climb several ringlike body 6 and the electric arc barrier layer 7 that sheath 4 is provided with the vertical creepage distance of prolongation, the effect of ring bodies 6 and electric arc barrier layer 7 is to increase hollow pipe inwall creepage distance and atmospherical discharges distance, inwall edge flashing or air breakdown discharge when preventing condensation.The height of ring bodies 6 and interval are according to required creepage distance decision, general requirement 〉=15mm/kv.Leave pore 8 on the electric arc barrier layer 7, the effect of pore 8 is to climb sheath 4 when charging into gases at high pressure giving to increase, and makes to increase that to climb sheath 4 air pressure inside identical, and the gases at high pressure compressing increases the outer wall of climbing sheath 4 closely pastes mutually with the inwall of fiberglass tubes 2, bonding firm.Increasing and climb sheath 4 and select for use elastomeric material or resilient plastics to make, is best with silicon rubber.The present invention has following advantage with respect to existing composite post insulator:

1, with the porcelain rod compares advantage such as the present invention has that production technology is simple, rate of finished products is high, need not fire, energy savings, shock resistance are strong as the composite insulator of plug.Because of yielding in the porcelain rod sintering, its appearance need be carried out machining, and the processing characteristics of porcelain is bad, and is by grinding machine, time-consuming.And major diameter porcelain rod sintering is inhomogeneous, and the percent defective height wastes energy.In addition, the shock resistance of porcelain core rod is poor, and during the earthquake occurrence of Wenchuan, Sichuan in 2008, the 110KV-500KV of this area transformer station porcelain pillar is complete rupture almost.

2, compare with epoxy glass solid bar composite post insulator, the present invention saves raw material, and is cheap for manufacturing cost, and can stop major diameter epoxy glass solid bar because layering is twined, and interlayer is prone to air gap, the hidden danger of staying for interior insulation.

3, with the epoxy glass winding pipe of filling insulating gas or liquid compare as the composite post insulator of plug, the present invention need not fill insulating gas or liquid, also need not to install air gauge or hydralic pressure gauge, do not exist and reveal hidden danger and problem of environmental pollution, can accomplish non-maintainingly, significantly reduce user's repair and maintenance workload.

Description of drawings

Accompanying drawing 1 is the utility model structural representation.Accompanying drawing 2 is to increase the structural representation of climbing sheath 4.

Embodiment

With reference to accompanying drawing, make a kind of NEW TYPE OF COMPOSITE post insulator in the following order:

1, increases with the Mold Making silicon rubber of particular design and climb sheath 4, its length is equated with epoxy fiberglass tubes 2;

2, with the inwall of epoxy fiberglass tubes 2 with increase the outer wall sand papering of climbing sheath 4, be placed in 110 ℃ of baking ovens 4 hours with the acetone scrub, the oven dry back is taken out and is placed the constant-temperature constant-humidity environment cold of drying in the air naturally;

3, at epoxy fiberglass tubes 2 inwalls with increase and climb the RTV bonding agent that sheath 4 outer walls spray formulated respectively, will increase and climb sheath 4 and insert in the fiberglass tubes 2, two ends are loaded onto base plate and are strained with bolt, make it can bear the air pressure that is not less than 0.6MP;

4, from increasing gas or the liquid that the pore of climbing sheath 4 one ends charges into 0.6MP pressure, make by increasing of silicon rubber making and climb the inwall that is adjacent to fiberglass tubes 2 after sheath 4 outer walls expand, kept 48 hours, allow bonding agent under pressure after the full solidification, release pressure, promptly become to have and increase the hollow plug of epoxy glass of climbing sheath 4;

5, increased the interior sulphurated siliastic full skirt 3 of mould that the hollow plug of epoxy glass of climbing sheath 4 places production compound inslation pillar above-mentioned having;

6, the upper and lower metal-

ware

1,5 of assembling in constant-temperature constant-humidity environment is promptly finished a kind of making of NEW TYPE OF COMPOSITE post insulator.

Claims

1. a NEW TYPE OF COMPOSITE post insulator is characterized in that the below of metal-ware on the composite post insulator (1) is provided with epoxy fiberglass tubes (2), silicon rubber full skirt (3) successively, increases and climb sheath (4) and following metal-ware (5).

2. a kind of NEW TYPE OF COMPOSITE post insulator according to claim 1 is characterized in that increasing and climbs sheath (4) and be provided with several ringlike body (6) and the electric arc barrier layer (7) that prolongs vertical creepage distance.

3. a kind of NEW TYPE OF COMPOSITE post insulator according to claim 1 and 2 is characterized in that increasing ring bodies (6) height of climbing on the sheath (4) and is directly proportional with the size of space.

4. a kind of NEW TYPE OF COMPOSITE post insulator according to claim 1 and 2 is characterized in that increasing the pore (8) that the electric arc barrier layer (7) of climbing sheath (4) is provided with circulation gases at high pressure/liquid.

5. a kind of NEW TYPE OF COMPOSITE post insulator according to claim 1 and 2 is characterized in that climbing sheath (4) and charging into gases at high pressure its outer wall and epoxy fiberglass tubes (2) inwall are pasted to increasing.

6. a kind of NEW TYPE OF COMPOSITE post insulator according to claim 1 and 2 is characterized in that climbing sheath (4) and charging into highly pressurised liquid its outer wall and epoxy fiberglass tubes (2) inwall are pasted to increasing.

7. a kind of NEW TYPE OF COMPOSITE post insulator according to claim 1 and 2 is characterized in that increasing the material of climbing sheath (4) and makes with electric well behaved rubber.

8. a kind of NEW TYPE OF COMPOSITE post insulator according to claim 1 and 2 is characterized in that increasing the material of climbing sheath (4) and makes with electric well behaved resilient plastics.