CN102515709A

CN102515709A - Raw material formula for porcelain insulator used in line with voltage of more than 500 kV

Info

Publication number: CN102515709A
Application number: CN2011104103605A
Authority: CN
Inventors: 罗汉英
Original assignee: CHONGQING GEPAI ELECTRIC PORCELAIN Co Ltd
Current assignee: CHONGQING GEPAI ELECTRIC PORCELAIN Co Ltd
Priority date: 2011-12-12
Filing date: 2011-12-12
Publication date: 2012-06-27

Abstract

The invention provides a raw material formula for a porcelain insulator used in a line with a voltage of more than 500 kV, which relates to processing powder of an inorganic compound for preparation of a ceramic. The formula is used for preparing an electric porcelain with better mechanical characteristics and dielectric properties. The formula for the electric porcelain comprises, by mass, 25 to 35 parts of Dongsheng soil, 5 to 12 parts of Shuiquliu clay, 8 to 13 parts of Jingyang soil, 35 to 45 parts of bauxitic clay, 5 to 10 parts of potash feldspar and 1 to 4 parts of barium carbonate, and is applicable to preparation of a porcelain insulator used in a line with a voltage of more than 500 kV.

Description

The composition of raw materials of the above voltage range circuit of a kind of 500kV porcelain insulator

Technical field

The present invention relates to a kind of processing powder of preparing to make the mineral compound of ceramic.

Background technology

Electroceramics is generally processed by solid insulating material, is installed between the conductor of different potentials or between conductor and the earthing component, and be the device that plays electric insulation and mechanical support effect simultaneously.Though the structure of dissimilar insulators, profile have than big-difference, all by insulating body be connected the gold utensil two parts and form.Insulating body is that the insulator of porcelain spare is electroceramics.

On the one hand, electroceramics need possess the favorable mechanical performance to carry electrical conductor, under secular mechanical load (tension, bending resistance, antitorque, internal pressure-resistant) effect, reliablely and stablely works.Also to have excellent electric characteristics; Outstanding insulating power is arranged; To guarantee the safety in the operational process, how to make the electroceramics that possesses good mechanical properties and dielectric characteristics is the problem that the technician is devoted to study always, and the composition of raw materials of electroceramics then is the primary stage in the research field.

Summary of the invention

The invention is intended to provide the composition of raw materials of the above voltage range circuit of a kind of 500kV porcelain insulator, the electroceramics that has better mechanical property and dielectric properties in order to preparation.

The object of the invention can reach through following measure: this electric ceramic formulation is made up of following materials in parts by mass: 25～35 parts in soil, 5～12 parts of Cortex Fraxini mandshuricae clays, 8～13 parts in Jingyang soil, 35～45 parts of bauxitic clays, 5～10 parts of potassium felspar sands, 1～4 part of barium carbonate are won in east.

The technique scheme difference with the prior art is: this material side adopts clay, feldspar, alumina etc. to be raw material; The mechanical property of porcelain, dielectric properties, weather resisteant ability, resistance of aging and use characteristics are good; The firing range broad; The complete porcelainization of porcelain body after burning till, non-hygroscopic, opening (showing) porosity: 0.0%; Volume density:>=2.75g/cm ³Withstand voltage:>=35kV/mm, volume resistivity>=10 ¹⁴Ω cm; Porcelain flexural strength>=185Mpa, glazing flexural strength>=235Mpa.Each item performance index surpass the high-strength aluminium matter of GB8411 porcelain C130 standard-required, are applicable to make the above voltage range circuit of 500kV porcelain insulator.

Embodiment

Known concrete structure and characteristic are no longer set forth at this in the following proposal.

35 parts in soil, 5 parts of Cortex Fraxini mandshuricae clays, 8 parts in Jingyang soil, 45 parts of bauxitic clays, 5 parts of potassium felspar sands, 1 part of barium carbonate are won in the main east of adopting of prescription.Through: the electroceramics finished product is processed in ball milling → sieve, deironing → press filt → old → vacuum pugging → dry in the shade → moulding → baking → glazing → burn till → mucilage binding maintenance.

The complete porcelainization of porcelain body after burning till, non-hygroscopic, opening (showing) porosity: 0.0%; Volume density:>=2.75g/cm ³Withstand voltage:>=35kV/mm, volume resistivity>=10 ¹⁴Ω cm; Porcelain flexural strength>=185Mpa, glazing flexural strength>=235Mpa.

The chemical ingredients value is respectively in the electroceramics finished product: SiO2 35.42%, Al2O3 50.1%, Fe2O3 1.12%, TiO2 1.73%, CaO 0.55%, MgO 0.44%, K2O 2.57%, Na2O 0.38%, BaCO3 2.50%, IL 4.96%.

In another embodiment, only be with the foregoing description difference: 25 parts in soil, 12 parts of Cortex Fraxini mandshuricae clays, 13 parts in Jingyang soil, 35 parts of bauxitic clays, 10 parts of potassium felspar sands, 4 parts of barium carbonates are won in the main east of adopting of prescription.

Above-described only is preferred implementation of the present invention; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from structure of the present invention, can also make some distortion and improvement; These also should be regarded as protection scope of the present invention, and these can not influence effect and practical applicability that the present invention implements.

Claims

1. the composition of raw materials of the above voltage range circuit of a 500kV porcelain insulator is characterized in that being made up of following materials in parts by mass: 25～35 parts in east victory soil, 5～12 parts of Cortex Fraxini mandshuricae clays, 8～13 parts in Jingyang soil, 35～45 parts of bauxitic clays, 5～10 parts of potassium felspar sands, 1～4 part of barium carbonate.