CN108238792A - A kind of formula and its preparation process of direct current arrester valve block - Google Patents

A kind of formula and its preparation process of direct current arrester valve block Download PDF

Info

Publication number
CN108238792A
CN108238792A CN201611227975.3A CN201611227975A CN108238792A CN 108238792 A CN108238792 A CN 108238792A CN 201611227975 A CN201611227975 A CN 201611227975A CN 108238792 A CN108238792 A CN 108238792A
Authority
CN
China
Prior art keywords
direct current
valve block
current arrester
arrester valve
preparation process
Prior art date
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.)
Pending
Application number
CN201611227975.3A
Other languages
Chinese (zh)
Inventor
葛平安
伍建新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XI'AN TIANGONG ELECTRIC CO Ltd
Original Assignee
XI'AN TIANGONG ELECTRIC CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by XI'AN TIANGONG ELECTRIC CO Ltd filed Critical XI'AN TIANGONG ELECTRIC CO Ltd
Priority to CN201611227975.3A priority Critical patent/CN108238792A/en
Publication of CN108238792A publication Critical patent/CN108238792A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/453—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zinc, tin, or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
    • C04B41/90—Coating or impregnation for obtaining at least two superposed coatings having different compositions at least one coating being a metal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12—Overvoltage protection resistors
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3275—Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
    • C04B2235/3277—Co3O4
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3279—Nickel oxides, nickalates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3294—Antimony oxides, antimonates, antimonites or oxide forming salts thereof, indium antimonate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3298—Bismuth oxides, bismuthates or oxide forming salts thereof, e.g. zinc bismuthate
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/442—Carbonates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/443—Nitrates or nitrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Abstract

The invention discloses a kind of formulas and its preparation process of direct current arrester valve block, and the valve block is using conventional bismuth system zinc oxide component system, by optimizing Bi2O3And Sb2O3、Cr2O3And SiO2Weight ratio, optimize the weight ratio of NiO and ZnO, it introduces sintered heat treatment process and low temperature burns glass glaze handicraft, and control aluminium electrode stays side size, a series of high-performance such as the low Kct under low drain stream, low-pressure ratio, high 2ms square waves discharge capacity and unipolarity direct current aging are reached, and the change of power consumption after polarity reversion is small and can meet the requirement of direct current aging that newest IEC60099 9 converts polarized.The all properties of the valve block can meet requirement of the Domestic Direct Current Transmission with various direct current arresters, can be used for alternating-current lightning arrestor all in international most advanced level.

Description

A kind of formula and its preparation process of direct current arrester valve block
Technical field
The invention belongs to electric system arrester technical fields, are a kind of high-performance direct current arrester valve piece formula and work Skill.
Background technology
Ac transmission is generally used before the transmission of electric power.Ac transmission is relatively easy, does not grow and (is less than in transmission range 600 kilometers) in the case of ac transmission it is also more economical.It is (big in long distance power transmission recently as the breakthrough of HVDC Transmission Technology In 800 kilometers) on, direct current transportation compared to ac transmission there are many advantage, as transmission capacity is big, smaller transmission of electricity corridor is empty Between, the investments such as smaller transmission loss and less cable shaft tower.China has built up a plurality of DC power transmission line, also has very much Producer can produce direct current arrester.Direct current aging wants much harsh, the direct current aging of polarized conversion is just compared to exchange aging It is required that higher.Traditional alternating-current lightning arrestor power consumption will soon constantly rise and finally lead caused by aging as DC application Pyrogenicity is collapsed；Traditional direct current arrester is such as used for the application of polarized conversion, and power consumption increased very before this after each dipole inversion It is more then just slowly to lower, also there is hidden danger；Therefore the direct current arrester valve block of a new generation needs different formulas and heat treatment work Skill meets new requirement.
The manufacture of present direct current arrester valve block, the technology that some is introduced using the clear 56-142601 of this patent Te Open, valve It after piece sintering, is cleaned after first both ends of the surface are ground, then in both ends of the surface coating bismuth oxide slurry, finally carries out heat at 900 degree or more Processing；Some is improved by being formulated, such as Chinese patent CN101503292A；The higher temperature of some uses, such as China Patent CN102390992A.Using the technology of Japan Patent introduction, shortcoming is complex process, more once-firings and coating, to burning It ties production capacity and cost impact is larger；The technology that Chinese patent CN101503292A is introduced, shortcoming is that pressure ratio is too high, 2ms square waves Can be poor, and leakage current is also bigger than normal；The technology that Chinese patent CN102390992A is introduced, shortcoming is that leakage current is too big；It is another all these The patent direct current ageing results that all no report polarized is not converted.
Invention content
The purpose of the invention is to which the direct current arrester of all applications is given to provide high performance direct current valve block, it is greatly reduced Power consumption, reduction pressure ratio, reduction leakage current and raising 2ms square wave discharge capacities after dipole inversion, greatly improve direct current arrester Properties, so as to improve the operational reliability of direct current arrester and level of protection.
To achieve these goals, the technical solution adopted by the present invention is that：
A kind of direct current arrester valve block, is made of the raw material of following weight percents：
The Bi of 3-6%2O3, the Sb of 2-5%2O3, the Co of the NiO of 2-3%, 0.5-2.0%3O4, the MnCO of 0.5-2.0%3, The Cr of 0.05-0.5%2O3, the SiO of 0.05-0.5%2, the silver glass powder of 0.05-0.5%, the Al (NO of 0.01-0.06%3)3* 9H2O, remaining is ZnO.
A kind of direct current arrester valve block as described above, wherein, Bi2O3And Sb2O3、Cr2O3And SiO2Weight ratio be：
1.5x Bi2O3≈Sb2O3+10*(Cr2O3+S iO2)。
A kind of direct current arrester valve block as described above, wherein, the weight ratio of NiO and ZnO are NiO ≈ 2.5%*ZnO.
A kind of preparation process of direct current arrester valve block, is as follows：
It is prepared by calcining material that --- --- mist projection granulating --- burn by compression moulding --- dumping, pre-burning --- for slurry preparation Into --- spray glass cement --- gloss firing, heat treatment --- grinding, cleaning, drying --- aluminum-spraying electrode；
1) prepared by calcining material
Bi is weighed respectively with electronic balance by formula2O3,Sb2O3,NiO,Co3O4,MnCO3,Cr2O3,SiO2, silver glass powder With Al (NO3)3*9H2O.First with agitating ball mill by Bi2O3,Sb2O3,NiO,Co3O4,MnCO3,Cr2O3,SiO2And silver glass powder Be milled down to less than 2 microns, then by the good slurry drying of ball milling and it is dry-mixed uniformly, be then charged into corundum sagger in pushed bat kiln in It is calcined at 750-850 DEG C, calcining material is finally milled down to 1 microns with agitating ball mill；
2) prepared by slurry
ZnO is distributed in deionized water, then adds in levigate calcining material, the Al (NO dissolved3)3, dispersant, disappear Infusion and adhesive dissolve stir 2 hours so that slurry is uniformly mixed, control the solid content of slurry in 60-70%；
3) mist projection granulating
Slurry is dried and is granulated with spray dryer, to prepare the powder with certain fluidity and bulk density, system Into granulation material average grain diameter be 100 microns；
4) compression moulding
First with the aqueous batch mixer of V-arrangement, deionized water and the batch mixing 1 for adding in 1-2% in granulation material in the form of spraying are small When more than, then by aging 24 hours of aqueous granulation material or more, finally according to the forming height of setting and green body weight dry-pressing Green body cylinders are made.
5) dumping, pre-burning
The green body of compacting is incorporated in the mullite sagger of opening dumping, pre-burning in pushed bat kiln；
6) it is burnt into
Pre- burned green body is fitted into astomous mullite sagger, is burnt into pushed bat kiln at 1050-1150 DEG C；
7) glass cement is sprayed
Binder solution is first prepared, then glass dust and binder solution are uniformly mixed, finally by constant weight Glass paste is sprayed on the side of potsherd；
8) gloss firing, heat treatment
Heat treatment and gloss firing merge, and heat treatment temperature is 450-600 DEG C；
9) it grinds, clean, drying
The upper and lower end face of the potsherd of burned glaze is first ground, is ground to the height of setting, and meets the both ends of the surface depth of parallelism and end The requirement of surface evenness, then clean up, finally dry；
10) aluminum-spraying electrode
Aluminium electrode is sprayed in the upper and lower end face of ground potsherd, mask, arrester valve piece system are done using silicone rubber sleeve It finishes.
A kind of preparation process of direct current arrester valve block as described above, wherein, dumping and pre-burning are combined into a procedure, row The temperature of glue is 350-450 DEG C, and the temperature of pre-burning is 750-900 DEG C.
A kind of preparation process of direct current arrester valve block as described above, wherein, by the heat treatment process and burning after firing Glass glaze handicraft is combined into a procedure；Heat treatment temperature is 450-600 DEG C.
A kind of preparation process of direct current arrester valve block as described above, wherein, mask is made using silicone rubber sleeve when aluminium-plated, Control aluminium electrode stays side within 0.5 millimeter.
Compared with prior art, the advantageous effect that the present invention generates is mainly reflected in：
The present invention is by optimizing Bi2O3And Sb2O3、Cr2O3And SiO2Weight ratio, optimize NiO and ZnO weight ratio Example, introduces that sintered heat treatment process and low temperature burn glass glaze handicraft and control aluminium electrode stays side size, has reached low drain A series of high-performance such as the low Kct under stream, low-pressure ratio, high 2ms square waves discharge capacity and direct current aging, and the work(after polarity reversion Consumption variation is small and can meet the requirement of direct current aging that newest IEC60099-9 converts polarized.Specific technique effect is such as Under：
1) to the valve block of D78 and D99, voltage gradient is all 220V/mm or so.
2) leakage current is low, and to the valve block of D78 and D99, leakage current is less than 5 μ A.
3) lightning voltage is than low, and to the valve block of D78 and D99,10kA lightning voltages are than being respectively 1.54 and 1.50.
4) 2ms square waves discharge capacity is high, to the valve block of D78 and D99, through-flow respectively 2100A and 3400A, and 18 pulses.
5) Kct under the aging of unipolarity direct current is small, is all 0.8 or so to the valve block of D78 and D99.
6) change of power consumption after polarity reversion is small and can meet the direct current aging that newest IEC60099-9 converts polarized Requirement.To the valve block of D78 and D99, P1/P0To P9/P0Both less than 0.9, specification is less than 1.1.
7) direct current arrester and alternating-current lightning arrestor of various applications can be used for, realizes AC/DC universal.
Specific embodiment
For the ease of understanding the purpose of the present invention, technical solution and its effect, now the present invention will be done in conjunction with the embodiments into One step elaborates.
A kind of direct current arrester valve block of the present invention, is made of the raw material of following weight percents：
The Bi of 3-6%2O3, the Sb of 2-5%2O3, the Co of the NiO of 2-3%, 0.5-2.0%3O4, the MnCO of 0.5-2.0%3, The Cr of 0.05-0.5%2O3, the SiO of 0.05-0.5%2, the silver glass powder of 0.05-0.5%, the Al (NO of 0.01-0.06%3)3* 9H2O, remaining is ZnO.
A kind of direct current arrester valve block of the present invention, Bi2O3And Sb2O3、Cr2O3And SiO2Weight ratio be：
1.5x Bi2O3≈Sb2O3+10*(Cr2O3+SiO2)。
The weight ratio of a kind of direct current arrester valve block of the present invention, NiO and ZnO are NiO ≈ 2.5%*ZnO.
A kind of preparation process of direct current arrester valve block, is as follows：
It is prepared by calcining material that --- --- mist projection granulating --- burn by compression moulding --- dumping, pre-burning --- for slurry preparation Into --- spray glass cement --- gloss firing, heat treatment --- grinding, cleaning, drying --- aluminum-spraying electrode；
1) prepared by calcining material
Bi is weighed respectively with electronic balance by formula2O3,Sb2O3,NiO,Co3O4,MnCO3,Cr2O3,SiO2, silver glass powder With Al (NO3)3*9H2O.First with agitating ball mill by Bi2O3,Sb2O3,NiO,Co3O4,MnCO3,Cr2O3,SiO2And silver glass powder Be milled down to less than 2 microns, then by the good slurry drying of ball milling and it is dry-mixed uniformly, be then charged into corundum sagger in pushed bat kiln in It is calcined at 750-850 DEG C, calcining material is finally milled down to 1 microns with agitating ball mill；
2) prepared by slurry
ZnO is distributed in deionized water, then adds in levigate calcining material, the Al (NO dissolved3)3, dispersant, disappear Infusion and adhesive dissolve stir 2 hours so that slurry is uniformly mixed, control the solid content of slurry in 60-70%；
3) mist projection granulating
Slurry is dried and is granulated with spray dryer, to prepare the powder with certain fluidity and bulk density, system Into granulation material average grain diameter be 100 microns；
4) compression moulding
First with the aqueous batch mixer of V-arrangement, deionized water and the batch mixing 1 for adding in 1-2% in granulation material in the form of spraying are small When more than, then by aging 24 hours of aqueous granulation material or more, finally according to the forming height of setting and green body weight dry-pressing Green body cylinders are made.
5) dumping, pre-burning
The green body of compacting is incorporated in the mullite sagger of opening dumping, pre-burning in pushed bat kiln；
6) it is burnt into
Pre- burned green body is fitted into astomous mullite sagger, is burnt into pushed bat kiln at 1050-1150 DEG C；
7) glass cement is sprayed
Binder solution is first prepared, then glass dust and binder solution are uniformly mixed, finally by constant weight Glass paste is sprayed on the side of potsherd；
8) gloss firing, heat treatment
Heat treatment and gloss firing merge, and heat treatment temperature is 450-600 DEG C；
9) it grinds, clean, drying
The upper and lower end face of the potsherd of burned glaze is first ground, is ground to the height of setting, and meets the both ends of the surface depth of parallelism and end The requirement of surface evenness, then clean up, finally dry；
10) aluminum-spraying electrode
Aluminium electrode is sprayed in the upper and lower end face of ground potsherd, mask, arrester valve piece system are done using silicone rubber sleeve It finishes.
A kind of preparation process of direct current arrester valve block, wherein, dumping and pre-burning are combined into a procedure, and the temperature of dumping is 350-450 DEG C, the temperature of pre-burning is 750-900 DEG C.
A kind of preparation process of direct current arrester valve block, wherein, by the heat treatment process after firing and burn glass glaze handicraft It is combined into a procedure；Heat treatment temperature is 450-600 DEG C.
A kind of preparation process of direct current arrester valve block, wherein, mask is made using silicone rubber sleeve when aluminium-plated, controls aluminium electrode Stay side within 0.5 millimeter.
The direct current arrester valve block of the present invention is by cylindrical zinc oxide pressure-sensitive ceramic, the glass of zinc oxide pressure-sensitive ceramic side The aluminium electrode three parts of glass glaze and zinc oxide pressure-sensitive ceramic upper and lower end face are formed.
The high-performance direct current arrester valve piece of the present invention, is to be referred to by being largely formulated with technological experiment and binding isotherm It leads, obtained by optimization of C/C composites and technique, and through experimental verification is repeated several times.Some terms are described as follows：U1mAFinger flows through valve block DC current be 1mA when, the voltage at valve block both ends；Leakage current refers to and applies 0.75*U at valve block both ends1mADC voltage when flow Cross the leakage current of valve block；Voltage gradient refers to the U of valve block unit thickness1mAVoltage；Lightning voltage ratio refers to 8/20 μ s lightning impulses electricity The residual voltage and U flowed down1mARatio；2ms square wave discharge capacities are subjected to 18 pulses；Unipolarity direct current aging, at 115 DEG C Do 1000 hours and accelerate direct current aging, during which apply that alive polarity is constant, Kct be apply power consumption of the voltage after 1000 hours with Originate the ratio of power consumption；The direct current aging of polarized conversion according to IEC60099-9, is done 1000 hours at 115 DEG C and is accelerated directly Aging is flowed, need to become change poles when during which applying alive polarity 24 hours after application of a voltage, 72 hours, 168 hours and 360 hours Property, P0For 0.5~1.0 hour power consumption measured after application voltage, P1For the power consumption ... measured after applying voltage 24 hours, P8For Apply the power consumption that voltage measures after 360.5 hours (after last time reversal 0.5 hour), P9To apply voltage 1000 hours The power consumption measured afterwards；Leakage current, lightning voltage ratio, Kct and P1/P0…P9/P0, value is smaller, and to represent performance better；Appearance that 2ms square waves are through-flow Amount, value is bigger, and to represent performance better.
Embodiment 1
The high-performance direct current arrester valve piece of the present embodiment, the weight percent of each ingredient of zinc oxide pressure-sensitive ceramic are as follows： 85.87% ZnO, 5.0% Bi2O3, 4.5% Sb2O3, 2.15% NiO, 1.0% Co3O4, 1.0% MnCO3, 0.1% Cr2O3, 0.2% SiO2, 0.15% silver glass powder, 0.03% Al (NO3)3*9H2O.Its production technology be by It is carried out according to following steps.
1) prepared by calcining material
Bi is weighed respectively with electronic balance by formula2O3,Sb2O3,NiO,Co3O4,MnCO3,Cr2O3,SiO2, silver glass powder With Al (NO3)3*9H2O.First with agitating ball mill by Bi2O3,Sb2O3,NiO,Co3O4,MnCO3,Cr2O3,SiO2And silver glass powder Be milled down to 1.5 microns, then by the good slurry drying of ball milling and it is dry-mixed uniformly, be then charged into corundum sagger in pushed bat kiln in 800 It is calcined at DEG C, calcining material is finally milled down to 1 microns with agitating ball mill.
2) prepared by slurry
Zinc oxide is distributed in deionized water, then add in levigate calcining material, the aluminum nitrate dissolved, dispersant, Antifoaming agent and adhesive dissolve stir 2 hours so that slurry is uniformly mixed, control the solid content of slurry 62%.
3) it is granulated
Slurry is dried and is granulated with spray dryer, to prepare the powder with certain fluidity and bulk density, system Into granulation material average grain diameter be 100 microns.
4) compression moulding
First with the aqueous batch mixer of V-arrangement, simultaneously batch mixing 1 is small for the deionized water of addition 1.2% in granulation material in the form of spraying When more than, then by aging 36 hours of aqueous granulation material, be finally made according to the forming height of setting and green body weight dry-pressing Green body cylinders.
5) dumping, pre-burning
The green body of compacting is incorporated in the mullite sagger of opening dumping, pre-burning in pushed bat kiln.The temperature of dumping is 350~450 DEG C, the temperature of pre-burning is 800 DEG C.
6) it is burnt into
Pre- burned green body is fitted into astomous mullite sagger, is burnt into pushed bat kiln at 1100 DEG C.
7) glass paste is sprayed
Binder solution is first prepared, then glass dust and binder solution are uniformly mixed, finally by constant weight Glass paste is sprayed on the side of potsherd.
8) gloss firing, heat treatment
Heat treatment and gloss firing merge, and heat treatment temperature is 550 degree.
9) it grinds, clean, drying
The upper and lower end face of the potsherd of burned glaze is first ground, is ground to the height of setting, and meets the both ends of the surface depth of parallelism and end The requirement of surface evenness, then clean up, finally dry.
10) aluminum-spraying electrode
Aluminium electrode is sprayed in the upper and lower end face of ground potsherd, makees mask using silicone rubber sleeve, control stays side 0.4 Within millimeter.
The high-performance direct current arrester valve piece of the present embodiment, performance are in international most advanced level, and it is defeated to meet domestic direct current The requirement of electric various direct current arresters, the performance indicator measured are as shown in the table.
Further narration is done to the present invention, but present invention is not limited to the embodiments described above above in conjunction with embodiment, In the knowledge that one skilled in the relevant art has, it can also be made under the premise of present inventive concept is not departed from Various change.

Claims (7)

1. a kind of direct current arrester valve block, it is characterised in that：It is made of the raw material of following weight percents：
The Bi of 3-6%2O3, the Sb of 2-5%2O3, the Co of the NiO of 2-3%, 0.5-2.0%3O4, the MnCO of 0.5-2.0%3,0.05- 0.5% Cr2O3, the SiO of 0.05-0.5%2, the silver glass powder of 0.05-0.5%, the Al (NO of 0.01-0.06%3)3*9H2O, Remaining is ZnO.
2. a kind of direct current arrester valve block according to claim 1, it is characterised in that：
Wherein, Bi2O3And Sb2O3、Cr2O3And SiO2Weight ratio be：
1.5x Bi2O3≈Sb2O3+10*(Cr2O3+SiO2)。
3. a kind of direct current arrester valve block according to claim 1, it is characterised in that：
Wherein, the weight ratio of NiO and ZnO is NiO ≈ 2.5%*ZnO.
4. a kind of preparation process of direct current arrester valve block, is as follows：
It is prepared by calcining material that --- --- mist projection granulating --- --- spray for compression moulding by dumping, pre-burning --- firing --- for slurry preparation Glass cement --- gloss firing, heat treatment --- grinding, cleaning, drying --- aluminum-spraying electrode.
5. a kind of preparation process of direct current arrester valve block according to claim 4, it is characterised in that：
Dumping and pre-burning are combined into a procedure, and the temperature of dumping is 350-450 DEG C, and the temperature of pre-burning is 750-900 DEG C.
6. a kind of preparation process of direct current arrester valve block according to claim 4, it is characterised in that：
Heat treatment process after firing and burning glass glaze handicraft are combined into a procedure；Heat treatment temperature is 450-600 DEG C.
7. a kind of preparation process of direct current arrester valve block according to claim 4, it is characterised in that：Silicon is used when aluminium-plated Rubber sleeve makees mask, and control aluminium electrode stays side within 0.5 millimeter.
CN201611227975.3A 2016-12-27 2016-12-27 A kind of formula and its preparation process of direct current arrester valve block Pending CN108238792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611227975.3A CN108238792A (en) 2016-12-27 2016-12-27 A kind of formula and its preparation process of direct current arrester valve block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611227975.3A CN108238792A (en) 2016-12-27 2016-12-27 A kind of formula and its preparation process of direct current arrester valve block

Publications (1)

Publication Number Publication Date
CN108238792A true CN108238792A (en) 2018-07-03

Family

ID=62702694

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611227975.3A Pending CN108238792A (en) 2016-12-27 2016-12-27 A kind of formula and its preparation process of direct current arrester valve block

Country Status (1)

Country Link
CN (1) CN108238792A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101503292A (en) * 2009-03-07 2009-08-12 抚顺电瓷制造有限公司 Formula of direct current zinc oxide resistance chip
CN101700976A (en) * 2009-11-20 2010-05-05 中国西电电气股份有限公司 Formula of non-linear resistor for high voltage surge arrester and manufacturing method thereof
CN102390992A (en) * 2011-08-09 2012-03-28 南阳金冠电气有限公司 Resistance card for direct-current lightning arrester and production process thereof
CN105427977A (en) * 2016-01-16 2016-03-23 国网电力科学研究院武汉南瑞有限责任公司 High-performance direct-current zinc oxide varistor and preparation process thereof
CN105957666A (en) * 2016-06-30 2016-09-21 全球能源互联网研究院 Varistor valve plate for lightning arrester and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101503292A (en) * 2009-03-07 2009-08-12 抚顺电瓷制造有限公司 Formula of direct current zinc oxide resistance chip
CN101700976A (en) * 2009-11-20 2010-05-05 中国西电电气股份有限公司 Formula of non-linear resistor for high voltage surge arrester and manufacturing method thereof
CN102390992A (en) * 2011-08-09 2012-03-28 南阳金冠电气有限公司 Resistance card for direct-current lightning arrester and production process thereof
CN105427977A (en) * 2016-01-16 2016-03-23 国网电力科学研究院武汉南瑞有限责任公司 High-performance direct-current zinc oxide varistor and preparation process thereof
CN105957666A (en) * 2016-06-30 2016-09-21 全球能源互联网研究院 Varistor valve plate for lightning arrester and preparation method thereof

Similar Documents

Publication Publication Date Title
JP6880425B2 (en) Zinc Oxide Lightning Arrester Valve Block with Lead-Free Highly Insulated Ceramic Coating and Methods for Preparing It
CN102390992B (en) Resistance card for direct-current lightning arrester and production process thereof
CN102249666B (en) Method for preparing direct-current zinc oxide resistance card
CN105622086B (en) The method for preparing high gradient zinc oxide piezoresistor ceramic
CN105645948A (en) Preparation method of high-voltage gradient and low-leakage current pressure-sensitive resistor ceramic material
Wu et al. Orthorhombic–tetragonal phase coexistence and piezoelectric behavior in (1− x)(Ba, Ca)(Ti, Sn) O3–x (Ba, Ca)(Ti, Zr) O3 lead-free ceramics
CN107473731A (en) A kind of high-energy type piezo-resistance and its manufacture method
CN105859279A (en) Novel process method for preparing zinc oxide piezoresistor ceramic with excellent properties
CN102976747A (en) Lithium niobate doped barium titanate based positive temperature coefficient resistance material and preparation method thereof
CN103787653A (en) Preparation method of carbon-modified CaCu3Ti4O12 high dielectric material
CN108238791A (en) A kind of formula and technique of high-performance high-gradient lightning arrester valve block
CN104446277A (en) Electro-ceramic cement adhesive composite material prescription
CN105884345A (en) High-voltage-gradient, low-residual-voltage and low-leakage-current ceramic and preparing method thereof
CN111393174A (en) Method for manufacturing M47 refractory material by using fly ash
CN108238790A (en) A kind of formula and its preparation process of alternating-current lightning arrestor valve block
CN104599797B (en) A kind of varistor edge coating grout material and preparation method thereof
CN108238792A (en) A kind of formula and its preparation process of direct current arrester valve block
CN110937890A (en) Varistor for lightning arrester and preparation method thereof
CN103204706B (en) Thin cream-colored kiln-transmutation glaze used for ceramic artwork decoration and preparation method thereof
CN103073291A (en) Electrode cushion layer material as well as preparation and application method thereof
CN103086712A (en) Bi2WO6-modified barium titanate-based lead-free positive temperature coefficient resistance material and preparation method thereof
CN102531592B (en) Reduction-resistant Y5P ceramic capacitor dielectric porcelain
CN115611615B (en) High-alumina slurry and use method thereof
CN105036742A (en) High-curie-point positive-temperature-coefficient resistance material Ba3Li3Bi2Nb5O20 and preparation method thereof
CN102531579A (en) Ceramic dielectric material and manufacture method thereof and ceramic capacitor and manufacture method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20180703

RJ01 Rejection of invention patent application after publication