CN107331570A - Interior full skirt Product of Ceramic Vacuum Tubes - Google Patents
Interior full skirt Product of Ceramic Vacuum Tubes Download PDFInfo
- Publication number
- CN107331570A CN107331570A CN201710707708.4A CN201710707708A CN107331570A CN 107331570 A CN107331570 A CN 107331570A CN 201710707708 A CN201710707708 A CN 201710707708A CN 107331570 A CN107331570 A CN 107331570A
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- China
- Prior art keywords
- full skirt
- interior full
- earthenware
- vacuum tubes
- product
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66238—Specific bellows details
-
- 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
- C04B35/10—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 aluminium oxide
-
- 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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3229—Cerium oxides 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
- C04B2235/3231—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
- C04B2235/34—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
- C04B2235/34—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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
Abstract
The invention discloses a kind of interior full skirt Product of Ceramic Vacuum Tubes;Belong to technology in vacuum tube field;Technical points include earthenware, the first outer ripple is provided with the earthenware lateral wall, the earthenware madial wall is axially spaced to be evenly equipped with some interior full skirts being parallel to each other, described interior full skirt one end is connected with ceramic inside pipe wall, the other end extends towards ceramic tube hub and angle α is formed between ceramic inside pipe wall, and angle α is 130 140 °;The present invention is intended to provide a kind of easy to use, interior full skirt Product of Ceramic Vacuum Tubes for working well;For protecting electrical load ability and even running.
Description
Technical field
The present invention relates to a kind of Product of Ceramic Vacuum Tubes, more specifically, more particularly to a kind of interior full skirt Product of Ceramic Vacuum Tubes.
Background technology
Product of Ceramic Vacuum Tubes is that power industry is defeated, match somebody with somebody, the core component of transformer substation system vacuum circuit breaker assembling, is to ensure that electricity
Power load capacity and the critical component of even running, current product mainly divide straight type and ripple, and ripple effect is mainly used in electric power
Increase radiating and electric arc discharge area and distance during operation, with the stability of strengthening electric current and high pressure bearing capacity, improve direct current
Breakdown strength, better conforms to use under ultra-high voltage environment.Current home products contains imported product, and only straight type and outer ripple do not have also
There is interior ripple product, general ripple peak valley size only has 2-5 ㎜, because size is easily burst apart greatly very much, can also influence glazing and dress
Match somebody with somebody, the present invention is the full skirt in increase on the basis of outer ripple is constant, greatly increase radiating and electric arc discharges area and distance,
Outward appearance and assembling are not influenceed again, vacuum envelope dc breakdown intensity is improved with this, raising vacuum envelope is used in hyperbaric environment will
Ask.
The content of the invention
It is an object of the invention to for above-mentioned the deficiencies in the prior art there is provided it is a kind of it is easy to use, work well in
Full skirt Product of Ceramic Vacuum Tubes.
The technical proposal of the invention is realized in this way:A kind of interior full skirt Product of Ceramic Vacuum Tubes, including earthenware, the pottery
Be provided with the first outer ripple on porcelain tube lateral wall, the earthenware madial wall is axially spaced be evenly equipped with it is some be parallel to each other it is interior
Full skirt, described interior full skirt one end is connected with ceramic inside pipe wall, and the other end extends towards ceramic tube hub and between ceramic inside pipe wall
Angle α is formed, angle α is 130 ° -140 °.
In above-mentioned interior full skirt Product of Ceramic Vacuum Tubes, the earthenware lower end is provided with connection ring, the connection ring lower end
Provided with Leakless sealing ring, the spacing between the connection ring lower surface and Leakless sealing ring lower surface is 2.5-3.5mm;Respectively
Interior inclined one end of full skirt is towards Leakless sealing ring side.
In above-mentioned interior full skirt Product of Ceramic Vacuum Tubes, the height H of each interior full skirt is 10-50mm, and the thickness d of each interior full skirt is
3-6mm;Clearance D in adjacent two between full skirt is 8-10mm;Each interior full skirt internal diameter is 93-97mm.
In above-mentioned interior full skirt Product of Ceramic Vacuum Tubes, the first outer corrugated outer surface is covered with the first glaze layer, described
One glaze layer upper end is 1.5-2mm with earthenware upper end spacing.
In above-mentioned interior full skirt Product of Ceramic Vacuum Tubes, the internal diameter of the Leakless sealing ring is less than the internal diameter of interior full skirt;Institute
The internal diameter for stating Leakless sealing ring is 69-73mm, and external diameter is 93-97mm.
In above-mentioned interior full skirt Product of Ceramic Vacuum Tubes, the Leakless sealing ring, connection ring and earthenware are formed in one
Overall structure.
In above-mentioned interior full skirt Product of Ceramic Vacuum Tubes, the second outer ripple, described second are provided with the connection ring outer wall
The second glaze layer is provided with the outside of outer ripple;The second outer ripple is by several concentric ring groups uniformly at intervals on connection ring outer wall
Into the distance between two neighboring concentric ring is 2.5-3.5mm, and each concentric ring thickness is 2.5-3.5mm.
In above-mentioned interior full skirt Product of Ceramic Vacuum Tubes, earthenware upper end close end is provided with the first Leakless sealing
Face, the Leakless sealing ring lower end close end is provided with the second Leakless sealing face.
In above-mentioned interior full skirt Product of Ceramic Vacuum Tubes, the first outer ripple is distributed on the outside of earthenware by axially spaced
Several bulge loops on wall are constituted, and the distance between two neighboring bulge loop is 2.5-3.5mm, and each bulge loop thickness is 2.5-
3.5mm。
The interior full skirt Product of Ceramic Vacuum Tubes of the present invention, the straight blank pipe shell of the ceramics is made up of the raw material of following weight percentage:
Aluminum oxide 93-96%, calcium carbonate 1-2.5%, silica 1-2.5%, zirconium oxide 0.1-0.5%, cerium oxide 0.1-0.5%, Soviet Union
State soil 1-2.5%.
The present invention is using after said structure, and by setting interior full skirt in ceramic inside pipe wall, interior full skirt can increase ceramic true
The contact area of blank pipe shell and air, in operation power, improves efficiency and add electric arc release that heat distributes
Area and distance, while not influenceing outward appearance and assembling again;Interior full skirt and the angle of ceramic 130 ° -140 ° of inside pipe wall formation, so
Can be to be built-in with vacateing more spaces;Overall structure can be carried with the stability of strengthening electric current and high pressure bearing capacity with this
High vacuum shell dc breakdown intensity, improves vacuum envelope in hyperbaric environment use requirement so that product can reach that direct current is hit
Wear intensity and be not less than 3.72g/cm not less than 50KV/mm, bulk density3Beneficial effect, and standard GB/T/T5593-1996
The dc breakdown intensity of middle requirement is that, not less than 18KV/mm, bulk density is not less than 3.60g/cm3, in present traditional product
In, dc breakdown intensity is up to 3.7g/cm in below 45KV/mm, bulk density3.Also, traditional metallization sealing strength
110Mpa, this product reaches 142Mpa.This product is matched well with metallization process, and metallization sealing-in qualification rate is improved from 93%
To more than 96%.
The increase of interior full skirt, greatly promotes product breakdown strength, reaches super-pressure use requirement.Current super-pressure ceramics production
Product rely on import substantially, and the present invention provides safe and reliable, stabilization disconnected for assembling vacuum for power industry transmission & distribution transformer substation system
The ceramic product of road device, product can ensure that super-pressure power supply safety is stable.
The present invention on the basis of original formula, adds cerium oxide so that toughness of products in right amount using after above-mentioned formula
More preferably, and firing temperature reduces more than 50 DEG C;Widen firing range and improve product density.
Brief description of the drawings
The present invention is described in further detail for embodiment in below in conjunction with the accompanying drawings, but does not constitute to the present invention's
Any limitation.
Fig. 1 is the cross-sectional view of the present invention;
Fig. 2 is the partial enlargement structural representation at A in Fig. 1;
Fig. 3 is the partial enlargement structural representation at B in Fig. 1.
In figure:Earthenware 1, the first outer ripple 1a, interior full skirt 1b, connection ring 1c, Leakless sealing ring 1d, the first glaze layer
1e, the second outer ripple 1f, second glaze layer 1g, concentric ring 1h, the first Leakless sealing face 1i, the second Leakless sealing face 1j,
Bulge loop 1k.
Embodiment
Refering to shown in Fig. 1 to Fig. 3, interior full skirt Product of Ceramic Vacuum Tubes of the invention, including earthenware 1, the earthenware 1
Internal diameter is 155-161mm, and external diameter is 179-185mm, and the madial wall of earthenware 1 is axially spaced to be evenly equipped with some be parallel to each other
Interior full skirt 1b, interior full skirt 1b quantity highly suitably adjusted according to product, in the present embodiment in full skirt quantity be 7.
Described interior full skirt 1b one end is connected with the inwall of earthenware 1, and the other end extends towards the center of earthenware 1 and between the inwall of earthenware 1
Angle α is formed, angle α is 130 ° -140 °, and angle α is preferred to use 135 degree of angle gradients, so can be built-in more with vacateing
Space.Each interior full skirt 1b height H is 10-50mm, and each interior full skirt 1b thickness d is in 3-6mm, adjacent two between full skirt 1b
Clearance D is 8-10mm, and each interior full skirt 1b internal diameters are 93-97mm.Depending on interior full skirt 1b sizes are according to product size, using this knot
Structure, by increasing capacitance it is possible to increase the hot high pressure release and electric arc release of Product of Ceramic Vacuum Tubes.
The first outer ripple 1a is provided with the lateral wall of earthenware 1, the first outer ripple 1a is by axially spaced equal
Several bulge loop 1k of the cloth on the lateral wall of earthenware 1 is constituted, and the distance between two neighboring bulge loop 1k is 2.5-3.5mm, respectively
Bulge loop 1k thickness is 2.5-3.5mm;The first outer ripple 1a outer surfaces are covered with the first glaze layer 1e, the first glaze layer 1e
Upper end is 1.5-2mm with the upper end spacing of earthenware 1.Specifically, according to the length of earthenware 1, spacing and size to bulge loop are entered
Row correspondence adjustment.
The lower end of earthenware 1, which is provided with connection ring 1c, the connection ring 1c outer walls, is provided with the second outer ripple 1f, institute
State and be provided with the second glaze layer 1g on the outside of the second outer ripple 1f;The second outer ripple 1g is by uniformly at intervals on connection ring 1c outer walls
Several concentric rings 1h is constituted, and the distance between two neighboring concentric ring 1h is 2.5-3.5mm, and each concentric ring 1h thickness is
2.5-3.5mm.Using the first outer outer ripple 1f of ripple 1a and second structure, the effect of ripple is mainly used in electric power fortune in structure
Increase radiating and electric arc discharge area and distance during row, with the stability of strengthening electric current and high pressure bearing capacity, improve direct current and hit
Intensity is worn, better conforms to use under ultra-high voltage environment.
Internal diameter of the connection ring 1c lower ends provided with Leakless sealing ring 1d, the Leakless sealing ring 1d is less than interior full skirt
1b internal diameter;The internal diameter of the Leakless sealing ring 1d be 69-73mm, external diameter is 93-97mm, the connection ring 1c lower surfaces with
Spacing between Leakless sealing ring 1d lower surfaces is 2.5-3.5mm;Each interior inclined one end of full skirt 1b is towards Leakless sealing
Ring 1d sides;The overall structure that the Leakless sealing ring 1d, connection ring 1c and earthenware 1 are formed in one.
The upper end close end of earthenware 1 is provided with the first Leakless sealing face 1i, the Leakless sealing ring 1d lower ends
Close end is provided with the second Leakless sealing face 1j.Using this structure so that overall that there is good air-tightness.Sealing strength
Greatly promote.Reach and meet high pressure and super-pressure use requirement.High pressure 35-220KV, super-pressure 330-750KV.
Further, 0.1-0.6% cerium oxide is increased in production material.By adding in right amount on the basis of original formula
Enter cerium oxide, to improve with stable prod performance while firing temperature can be reduced by more than 50 DEG C.
In specific implementation process, each size of product can carry out Reasonable adjustment according to actual conditions.
In use, by the assembling of interior full skirt Product of Ceramic Vacuum Tubes in vacuum circuit breaker, during operation power, Product of Ceramic Vacuum Tubes
Radiating efficiency improve, electric arc release area and apart from increase, the stability and high pressure bearing capacity of electric current are improved, dc breakdown
Intensity is improved, and is played a key effect in the load capacity for ensuring electric power and during the even running of electric power, after long-term use, is
The normal work of vacuum circuit breaker is not influenceed, the service condition of interior full skirt Product of Ceramic Vacuum Tubes should be inspected periodically, in time with changing
Damaged interior full skirt Product of Ceramic Vacuum Tubes.
A kind of interior full skirt Product of Ceramic Vacuum Tubes of the present invention, it is made up of the raw material of following weight percentage:Aluminum oxide 93-
96%th, calcium carbonate 1-2.5%, silica 1-2.5%, zirconium oxide 0.1-0.5%, cerium oxide 0.1-0.5%, Suzhou soil 1-
2.5%.
Formula compared with prior art, has been primarily introduced into cerium oxide, adds high reaction activity, improves crystal boundary flux phase
Composition, reaches reduction firing temperature, and widen the effect burnt scope and improve product density.
It is roughly the same with existing Product of Ceramic Vacuum Tubes in technique, it is unique it is different be exactly firing temperature from 1710 DEG C, under
Drop to 1660 DEG C, sintering curve 0---1200---1660---1200---60 (DEG C) kiln discharges afterwards, each curve point is respectively 8 small
When, add up to 36 hours.
Embodiment 1
Interior full skirt Product of Ceramic Vacuum Tubes described in the embodiment of the present invention, it is made up of the raw material of following weight percentage:Oxygen
Change aluminium 96%, calcium carbonate 1%, silica 1%, zirconium oxide 0.5%, cerium oxide 0.5%, Suzhou soil 1%.
Embodiment 2
Interior full skirt Product of Ceramic Vacuum Tubes described in the embodiment of the present invention, it is made up of the raw material of following weight percentage:Oxygen
Change aluminium 94.5%, calcium carbonate 1.5%, silica 1.5%, zirconium oxide 0.2%, cerium oxide 0.3%, Suzhou soil 2%.
Embodiment 3
Interior full skirt Product of Ceramic Vacuum Tubes described in the embodiment of the present invention, it is made up of the raw material of following weight percentage:Oxygen
Change aluminium 93%, calcium carbonate 2.5%, silica 1.8%, zirconium oxide 0.1%, cerium oxide 0.1%, Suzhou soil 2.5%.
Embodiment provided above is the better embodiment of the present invention, only illustrates the present invention for convenient, not to this hair
It is bright to make any formal limitation, any those of ordinary skill in the art, if putting forward skill not departing from the present invention
In the range of art feature, using the equivalent embodiment for locally changing or modifying made by disclosed technology contents, and
Without departing from the technical characteristic content of the present invention, in the range of still falling within the technology of the present invention feature.
Claims (9)
1. it is provided with a kind of interior full skirt Product of Ceramic Vacuum Tubes, including earthenware (1), earthenware (1) lateral wall outside first
Ripple (1a), it is characterised in that earthenware (1) madial wall is axially spaced to be evenly equipped with some interior full skirts being parallel to each other
(1b), described interior full skirt (1b) one end is connected with earthenware (1) inwall, the other end towards earthenware (1) center extend and with ceramics
Angle α is formed between pipe (1) inwall, angle α is 130 ° -140 °.
2. interior full skirt Product of Ceramic Vacuum Tubes according to claim 1, it is characterised in that earthenware (1) lower end is set
There is connection ring (1c), connection ring (1c) lower end is provided with Leakless sealing ring (1d), connection ring (1c) lower surface and gas
Spacing between close property sealing ring (1d) lower surface is 2.5-3.5mm;The inclined one end of each interior full skirt (1b) is sealed towards air-tightness
Connect ring (1d) side;The overall structure that the Leakless sealing ring (1d), connection ring (1c) and earthenware (1) are formed in one.
3. interior full skirt Product of Ceramic Vacuum Tubes according to claim 1 or 2, it is characterised in that the height H of each interior full skirt (1b)
For 10-50mm, the thickness d of each interior full skirt (1b) is 3-6mm;Clearance D in adjacent two between full skirt (1b) is 8-10mm;In each
Full skirt (1b) internal diameter is 93-97mm.
4. interior full skirt Product of Ceramic Vacuum Tubes according to claim 1, it is characterised in that first outer ripple (1a) appearance
Face is 1.5-2mm with earthenware (1) upper end spacing covered with the first glaze layer (1e), the first glaze layer (1e) upper end.
5. interior full skirt Product of Ceramic Vacuum Tubes according to claim 2, it is characterised in that the Leakless sealing ring (1d)
Internal diameter is less than the internal diameter of interior full skirt (1b);The internal diameter of the Leakless sealing ring (1d) is 69-73mm, and external diameter is 93-97mm.
6. interior full skirt Product of Ceramic Vacuum Tubes according to claim 2, it is characterised in that set on connection ring (1c) outer wall
It is equipped with the outside of the second outer ripple (1f), the second outer ripple (1f) and is provided with the second glaze layer (1g);The second outer ripple (1g)
Be made up of several concentric rings (1h) uniformly at intervals on connection ring (1c) outer wall, between two neighboring concentric ring (1h) away from
From for 2.5-3.5mm, each concentric ring (1h) thickness is 2.5-3.5mm.
7. interior full skirt Product of Ceramic Vacuum Tubes according to claim 1 or 2, it is characterised in that earthenware (1) upper end is near
End is provided with the first Leakless sealing face (1i), and Leakless sealing ring (1d) lower end close end is provided with the second air-tightness
Sealing surface (1j).
8. interior full skirt Product of Ceramic Vacuum Tubes according to claim 1, it is characterised in that the first outer ripple (1a) is by edge
Axially spaced-apart is distributed on several bulge loops (1k) composition on earthenware (1) lateral wall, between two neighboring bulge loop (1k) away from
From for 2.5-3.5mm, each bulge loop (1k) thickness is 2.5-3.5mm.
9. according to any described interior full skirt Product of Ceramic Vacuum Tubes of claim 1 to 8, it is characterised in that the straight blank pipe shell of the ceramics
It is made up of the raw material of following weight percentage:Aluminum oxide 93-96%, calcium carbonate 1-2.5%, silica 1-2.5%, zirconium oxide
0.1-0.5%, cerium oxide 0.1-0.5%, Suzhou soil 1-2.5%.
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CN201710707708.4A CN107331570B (en) | 2017-08-17 | 2017-08-17 | Interior full skirt Product of Ceramic Vacuum Tubes |
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CN107331570B CN107331570B (en) | 2019-06-21 |
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CN106971901A (en) * | 2017-04-21 | 2017-07-21 | 麦克奥迪(厦门)电气股份有限公司 | Great-current fixed sealed pole and its manufacture method |
CN207116314U (en) * | 2017-08-17 | 2018-03-16 | 梅州玉丰特陶科技有限公司 | A kind of interior full skirt Product of Ceramic Vacuum Tubes |
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2017
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US4650939A (en) * | 1986-01-24 | 1987-03-17 | Westinghouse Electric Corp. | Vacuum circuit interrupter having heat exchanger for temperature control |
CN201369284Y (en) * | 2009-03-06 | 2009-12-23 | 陕西宝光真空电器股份有限公司 | Large creep distance seal terminal |
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CN202839444U (en) * | 2012-09-24 | 2013-03-27 | 浙江博为电气有限公司 | Embedded pole for outdoor vacuum circuit breaker |
CN204102794U (en) * | 2014-09-26 | 2015-01-14 | 中国振华电子集团宇光电工有限公司(国营第七七一厂) | Shielding cylinder is provided with the pole of full skirt |
CN106971901A (en) * | 2017-04-21 | 2017-07-21 | 麦克奥迪(厦门)电气股份有限公司 | Great-current fixed sealed pole and its manufacture method |
CN207116314U (en) * | 2017-08-17 | 2018-03-16 | 梅州玉丰特陶科技有限公司 | A kind of interior full skirt Product of Ceramic Vacuum Tubes |
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