Composite insulating metal oxide lightning arrester and manufacture method thereof
Technical field
The invention provides a kind of be used to improve the NEW TYPE OF COMPOSITE insulating metal oxide lightning arrester of lightning arrester performance and function and the manufacture method of producing this lightning arrester thereof.
Background technology
The existing domestic composite insulating metal oxide lightning arrester of producing of the same trade, following dual mode is adopted in the encapsulation of its core body substantially:
First kind: core body external insulation framework employing epoxy resin pipe etc. is assembled into core body,
Second kind: core body external insulation framework adopts the core body of coilings such as glass fibre monofilament and epoxy resin,
On no matter above-mentioned two kinds of core bodys still are mechanical strength from sealing property, all exist many problems, especially mechanical robustness testing aspect, its process is for the 220KV lightning arrester, can not be by the horizontal bending resistance pulling force of the 2910N in the type approval test, at existing problem in the prior art, it is very necessary developing a kind of composite insulating metal oxide lightning arrester.
Summary of the invention
In view of existing problem in the above-mentioned prior art, the objective of the invention is to:
1, improves the mechanical strength of lightning arrester, do especially 220KV and above lightning arrester adopt this inventive method can pass through GB GB11032 smoothly? the mechanical load test requirements document of regulation in 000, example 220KV lightning arrester applies bending resistance load 2910N, can pass through smoothly, and existing any technology of the same trade all can not 100% by this test.
2, reduced number of components, improved manufacturing, made body densification more.
3, improved the sealing property of lightning arrester, really accomplished not have the gap, no office puts.
Composite insulating metal oxide lightning arrester of the present invention, its structure is made up of binding post, silastic material, earth stud, base flange, set bolt and core body; It is characterized in that core body is made up of electrode, resistor disc, conducting block, insulated electro piece, Insulating frame; One component from resistor disc be bonded into assembly by bonding conducting resinl; End at the assembly resistor disc is equipped with electrode, and the other end is equipped with conducting block, cross-over block and electrode, and above-mentioned parts all are packed in the Insulating frame; Earth stud passes Insulating frame and is connected with conducting block.The material that Insulating frame of the present invention adopts is that the insulating material of unsaturated polyester (UP) fibre reinforced moulding compound SMC or DMC or other once die stamping forming is made.Resistor disc of the present invention adopts non-linear metal oxide made.The manufacture method of composite insulating metal oxide lightning arrester of the present invention; It is characterized in that adopting following processing step: the first step: with non-linear metal oxide resistance and the bonding one-tenth core body of annex (electrode, cross-over block, conducting block etc.) thereof, the bonding conducting resinl that is made into epoxy resin, curing agent, conducting powder etc., and the core body that glues sent into drying baker, make it solidify to form one, reach desirable strength; Second step: the core body that forms one after the above-mentioned oven dry is wrapped with one deck insulating material (glass binding strap or alkali-free glass fibre silk, epoxy resin) and sends into the drying baker oven dry, make its fastening strength, in order to compacting; The 3rd step: the above-mentioned core body that processes is quantitatively sealed according to the core body specification with electric property SMC or DMC (unsaturated polyester fibre reinforced moulding compound) insulating material, and put on the mould that is fixed on vulcanizing press, the pressurization of heating makes its curing, forms closed body; The 4th step: machined on the core body that mold pressing is finished, make its surfacing and coarse, the sulfuration that is beneficial to silastic material is bonding; The 5th step: the above-mentioned core body that processes is coated bonding agent on its surface after sending into drying baker heating, quantitatively wraps up vulcanizer mold pressing on the silicon rubber after the drying once more, heats pressurization and forms whole composite insulation metal oxide arrester.
Advantage of the present invention is the structure advanced person, be easy to make, good seal performance, mechanical strength is high, core body adopts compression mouldings of insulating material such as electric property SMC, after forming real no gap entity and can in concentration is 0.1 the NaCl aqueous solution, boiling 42 hours, its technical performance index with boil before compare no any variation, thereby improved the technical performance stability of lightning arrester, prolonged useful life, mechanical strength is high, pass through GB GB11032 smoothly? the mechanical bending resistance load of regulation can not pass through and have other process now by the 2910N that stipulates in the type approval test in 000.
Description of drawings
The present invention has two accompanying drawings, wherein:
Fig. 1 is the structural representation of 220KV and above electric pressure composite insulating metal oxide lightning arrester
Fig. 2 is a core schematic diagram in the accompanying drawing 1
Among the figure: 1, binding post 2, electrode 3, silastic material 4, Insulating frame
5, resistor disc 6, conducting block 7, earth stud 8, cross-over block 9, base flange
10, bonding conducting resinl 11, set bolt
Embodiment
Composite insulating metal oxide lightning arrester provided by the present invention as shown in drawings, it is characterized in that: core body is to be formed by conductive adhesive between the non-linear metal oxide resistance, the outside be that binding post is Insulating frame in the core body outside in the core body, and Insulating frame is by insulating material upper flat plate vulcanizers such as the electric property SMC closed body that one-step mould forms of pressurizeing of heating.
Its processing step of the manufacture method of composite insulating metal oxide lightning arrester of the present invention is as follows:
The first step: with non-linear metal oxide resistance and the bonding one-tenth core body of annex (electrode, cross-over block, conducting block etc.) thereof, the bonding conducting resinl that is made into epoxy resin, curing agent, conducting powder etc., and the core body that glues sent into drying baker, and make it solidify to form one, reach desirable strength;
Second step: the core body that forms one after the above-mentioned oven dry is wrapped with one deck insulating material (glass binding strap or alkali-free glass fibre silk, epoxy resin) and sends into the drying baker oven dry, make its fastening strength, in order to compacting;
The 3rd step: the above-mentioned core body that processes is quantitatively sealed according to the core body specification with electric property SMC or DMC insulating material such as (unsaturated polyester fibre reinforced moulding compounds), and put on the mould that is fixed on vulcanizing press, the pressurization of heating makes its curing, forms closed body;
The 4th step: machined on the core body that mold pressing is finished, make its surfacing and coarse, the sulfuration that is beneficial to silastic material is bonding;
The 5th step: the above-mentioned core body that processes is coated bonding agent on its surface after sending into drying baker heating, quantitatively wraps up vulcanizer mold pressing on the silicon rubber after the drying once more, heats pressurization and forms whole composite insulation metal oxide arrester.