CN200990264Y - Variable diameter high-voltage hollow compound insulator - Google Patents

Abstract

The utility model relates to a variable diameter high pressure hollow composite insulator applied to electric power industry, which comprises an end connecting piece, a winding pipe, and an umbrella body which is provided with a plurality of umbrella skirts with different sizes; the end connecting piece is adhered to two ends of the winding pipe; the outer of the winding pipe is provided with an integer structure umbrella body; the winding pipe is a variable diameter pipe body; the umbrella body is an integrated body injected by a high temperature sulfuration silicone rubber material; as the variable diameter hollow composite insulator greatly decreases the barycenter height and windward area of the production, the utility model remarkably improves the bending load requirement of the production when in operating, and reduces the dosage of the inner insulation medium; the umbrella is an integer, so the utility model avoids the crack phenomenon of the existing connecting point which is easy to appear, the production performance is more stable and reliable.

Description

Reducing diameter high voltage hollow composite insulator

Technical field

The utility model relates to a kind of hollow combined insulator that a kind of power industry high voltage generating station is used, specifically a kind of shape such as turriform, the high-pressure hollow combined insulator of change diameter.

Background technology

Relevant by retrieval patent documentation does not retrieve the reducing diameter high voltage hollow composite insulator identical with the utility model structure at present as yet.Existing high-tension apparatus mainly is divided into two big classes with insulator: the insulator of ceramic material and silicon rubber hollow combined insulator.The version of insulator is a lot, straight shape, taper and waist drum etc. are arranged, but the weight of insulator is big, easily injures miscellaneous equipment after the blast, and anti-pollution characteristic is low, the burning process complexity; The hollow combined insulator own wt is light, is 1/4～1/10 of insulator, and no hidden peril of explosion has good hydrophobicity, compares anti-pollution characteristic with insulator and obviously improves, and the energy consumption of moulding process is well below insulator.Existing hollow combined insulator, manufacture method mainly contain two kinds: the one, and bulk material adopts room temperature vulcanized silicone rubber (RTV), makes single umbrella body, adopts the silicon rubber cementation to become whole again; The 2nd, umbrella body material adopts fluid silicone rubber through injection moulding.These method shortcomings are that single umbrella body becomes whole through cementation, are prone to phenomenons such as cracking in the abutting edge, and the insulation galvanic corrosion and the resistance to ag(e)ing of fluid silicone rubber are relatively poor.

Existing straight tube shape hollow combined insulator, with traditional hollow combined insulator very big progress has been arranged, but the center of gravity of straight tube shape composite insulator is higher, the ability of facining the wind also is not fine, so be necessary existing hollow combined insulator is improved, to improve serviceability.

Summary of the invention

The purpose of this utility model is that a kind of glass fibre that adopts will be provided is that material is made the fiberglass winding pipe that becomes diameter, and overall time injection high-temperature silicon disulfide rubber externally makes it form the reducing diameter high voltage hollow composite insulator of a whole umbrella body again.

To achieve these goals, the utility model adopts following technical scheme:

A kind of reducing diameter high voltage hollow composite insulator, by end coupling, winding pipe, have the umbrella body that the alternate full skirt of a plurality of sizes constitutes and form, end coupling cements in the two ends of winding pipe, it is characterized in that: be provided with an integrally-built umbrella body in the outside of winding pipe; Described winding pipe is for becoming the body of diameter; Described umbrella body is for being the integral body of material integral injection molding with the high-temperature silicon disulfide rubber.

Described winding pipe is to have flooded the hollow pipe that the glass fiber yarn coiling of epoxy resin forms.

The material of described umbrella body is a high-temperature silicon disulfide rubber, and it includes with the lower part forms: methyl vinyl silicone rubber and white carbon, aluminium hydroxide, silicone oil, vulcanizing agent etc.

The component of described high-temperature silicon disulfide rubber is: methyl vinyl silicone rubber 20-50%, white carbon 20～60%, aluminium hydroxide 25～50%, silicone oil 2～5%, vulcanizing agent 1%.

The utility model compared with prior art has following remarkable advantage:

1, take to become the diameter hollow combined insulator and compare, can reduce the height of C.G. and the front face area of product widely with original straight tube shape composite insulator, improve significantly product when operation to the bend loading requirement; Secondly, this version can reduce the consumption of built-in electrical insulation medium, has saved the manufacturing cost of electrical equipment manufacturer.

2, with between the existing full skirt adopt that adhesive is bonding to consist of whole hollow combined insulator and compare, this hollow combined insulator umbrella body is as a whole, thereby has avoided existing junction to be prone to the phenomenon of crackle, makes the performance of product more stable, reliable.

3, combining between umbrella body and the winding pipe is to make the high-temperature silicon disulfide rubber thermosetting in the winding pipe surface at the vacuum high-temperature state, thereby makes the bonding strength height, reliable of umbrella body and winding pipe.

4, adopt uninterrupted glass fibre to be wound in whole winding pipe, guaranteed that the intensity of winding pipe is even.

5, compare with the hollow combined insulator that existing room temperature vulcanized silicone rubber is made, ageing-resistant performance, electric erosion resistance can obviously improve, and the cost of material is low, the fabrication yield height.

Description of drawings

Below with reference to accompanying drawing the utility model is further described:

Accompanying drawing is the structural representation of the utility model reducing diameter high voltage hollow composite insulator;

Embodiment

With reference to accompanying drawing, reducing diameter high voltage hollow composite insulator of the present utility model is by end coupling 1a, 1b, winding pipe 2, umbrella body 3 compositions with the alternate full skirt formation of a plurality of sizes, end coupling 1 cements in the two ends of winding pipe 2, is provided with an integrally-built umbrella body 3 in the outside of winding pipe 2; Winding pipe 2 is for becoming the body of diameter, and winding pipe 2 solidifies the hollow pipe that forms for the glass fiber yarn coiling of having flooded epoxy resin.Umbrella body 3 is for being the integral body of material integral injection molding with the high-temperature silicon disulfide rubber, the material of umbrella body 3 includes with the lower part to be formed: methyl vinyl silicone rubber and white carbon, aluminium hydroxide, silicone oil, vulcanizing agent etc., methyl vinyl silicone rubber 20-50%, white carbon 20～60%, aluminium hydroxide 25～50%, silicone oil 2～5%, vulcanizing agent 1%.

Example 1 of the present utility model:

The material of umbrella body 3 is a high-temperature silicon disulfide rubber, component: methyl vinyl silicone rubber 25%, white carbon 30%, aluminium hydroxide 30%, silicone oil 4%, vulcanizing agent 1%.

The step of making:

(1), on the core rod of winding pipe to be wound 2, according to the fixing pin of going up in the axis two ends of analog track;

(2), adopt the uninterrupted glass fiber yarn flooded epoxy resin to be wound on to form hollow pipe on the core rod, and keep glass fibre uniform winding and constant tension;

(3), the hollow pipe that step (2) is made carries out hot setting;

(4), hollow pipe that step (3) is made carries out machine work, makes winding pipe 2;

(5), with the even brushing coupling agent of outer wall;

(6), winding pipe 2 is positioned in the injector die cavity closed die;

(7), rubber injection machine applies certain pressure, the locking mould, locked mode pressure is 1000t, makes to form vacuum state in the die cavity, the sizing material injection pressure is 1400bar;

(8), on equally distributed injection point on the winding pipe 2 injecting glue simultaneously, the whole umbrella body of disposable formation cements in the periphery of winding pipe 2;

(9), the sulfuration, temperature is 180 ℃, 30 minutes time;

(10), open mould, take out insulator, after the finishing, upper end connector 1a, 1b are adhesively fixed at the two ends of winding pipe 2.

Example 2 of the present utility model:

The material of umbrella body 3 is a high-temperature silicon disulfide rubber, component: methyl vinyl silicone rubber 40%, white carbon 50%, aluminium hydroxide 35%, silicone oil 3%, vulcanizing agent 1%.

The step of making:

(1), on the core rod of winding pipe to be wound 2, according to the fixing pin of going up in the axis two ends of analog track;

(2), adopt the uninterrupted glass fiber yarn flooded epoxy resin to be wound on to form hollow pipe on the core rod, and keep glass fibre uniform winding and constant tension;

(3), the hollow pipe that step (2) is made carries out hot setting;

(4), hollow pipe that step (3) is made carries out machine work, makes winding pipe 2;

(5), with the even brushing coupling agent of outer wall;

(6) winding pipe 2 is positioned in the injector die cavity closed die;

(7) rubber injection machine applies certain pressure, the locking mould, and locked mode pressure is 2000t, makes to form vacuum state in the die cavity, the sizing material injection pressure is 1500bar;

(8) while injecting glue on equally distributed injection point on the winding pipe 2, the whole umbrella body of disposable formation cements in the periphery of winding pipe 2;

(9) sulfuration, temperature is 170 ℃, 40 minutes time;

(10) open mould, take out insulator, after the finishing, upper end connector 1a, 1b are adhesively fixed at the two ends of winding pipe 2.

Claims (2)

1, a kind of reducing diameter high voltage hollow composite insulator, by end coupling (1), winding pipe (2), have the umbrella body (3) that the alternate full skirt of a plurality of sizes constitutes and form, end coupling (1) cements in the two ends of winding pipe (2), it is characterized in that: be provided with an integrally-built umbrella body (3) in the outside of winding pipe (2); Described winding pipe (2) is for becoming the body of diameter; Described umbrella body (3) is for being the integral body of material integral injection molding with the high-temperature silicon disulfide rubber.

2, reducing diameter high voltage hollow composite insulator according to claim 1 is characterized in that: described winding pipe (2) solidifies the hollow pipe that forms for the glass fiber yarn coiling of having flooded epoxy resin.

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