CN106356159B - A kind of insulating sleeve and its manufacturing method for mesohigh electrical connection - Google Patents
A kind of insulating sleeve and its manufacturing method for mesohigh electrical connection Download PDFInfo
- Publication number
- CN106356159B CN106356159B CN201610847364.2A CN201610847364A CN106356159B CN 106356159 B CN106356159 B CN 106356159B CN 201610847364 A CN201610847364 A CN 201610847364A CN 106356159 B CN106356159 B CN 106356159B
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- Prior art keywords
- insulation crust
- hole
- wall
- shielding part
- peripheral wall
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/36—Insulators having evacuated or gas-filled spaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
Abstract
A kind of insulating sleeve for mesohigh electrical connection, including voltage carrier, insulation crust, shielding part, insulation crust center set through-hole, and voltage carrier is arranged in through-hole, set semiconductor layer along axial direction in through-hole peripheral wall；Vacuum tightness chamber is set between insulation crust outer wall and through-hole peripheral wall；Shielding part is axially set in insulation crust outer wall.Step: 1) manufacturing method of insulating sleeve for mesohigh electrical connection manufactures plastic sleeve body；2) plastic sleeve body is placed in vacuum tank, insulated end cover is placed in welding pressure head；3) vacuum tank is vacuumized；4) upper end of the upper end of insulated end cover and insulation crust, through-hole is welded together, makes to form vacuum tightness chamber between the outer wall of insulation crust, the peripheral wall of through-hole and insulated end cover three.Its advantage is that: 1) save the cost；2) it is conducive to environmental protection；3) light-weight；4) without interface problem；5) without condensing temperature；6) safe and reliable；7) high production efficiency.
Description
Technical field
The invention belongs to centering high-tension switch gears to be electrically connected technical field, more particularly to a kind of for gas-insulated
The insulating sleeve and its manufacturing method used in switchgear.
Background technique
Currently, commonly for the insulating sleeve for electrical connection on mesohigh, it is common to use thermosetting resin such as ring
Oxygen resin wraps up voltage carrier and gauze screen wherein as its insulation crust, insulation crust.It is formed by epoxy resin exhausted
Edge shell is generally solid, and insulating capacity also designs available guarantee, therefore, heat cured insulation casing with the wall thickness of product
General volume is big, weight is big.In addition, the solidification of thermosetting resin needs long period and higher temperature, production efficiency is low, energy
Consumption is big.And thermosetting resin cannot recycle after solidification, be unfavorable for environmental protection.
To overcome above-mentioned technological deficiency, people have done following improvement: 1) application No. is 200780017555.5 middle promulgateds by the State Council
Bright patent discloses a kind of arrangements of electric connection, which includes by thermoplastic insulation division and conductive voltage carrying part.To change
Kind thermoplastic resin limits dielectric strength achieved in wall thickness range in Shooting Technique, and the insulation division is interior filled with preferably pressurization
Added electrical insulation gas SF6Or the added electrical insulations object such as silastic member, to further prevent voltage carrying part and ground connection
Occurs short circuit between framework.2) application No. is 201080031976.5 Chinese invention patent disclose it is a kind of for electrically connecting to
The equipment of energy supply conductor for middle pressure and/or high pressure, including voltage load-bearing part and the tube-like envelope that is formed by polyme,
The solid fillers of electrically insulating material are filled in space between voltage load-bearing part and shell, such as polyurethane or poly- terephthaldehyde
Sour butanediol ester.3) U.S. patent Nos of Publication No. US3178505 disclose and are provided with conductor mounting stud inside it
The pot head of insulation crust.The insulating sleeve includes the shell, ground connection flange and spring retaining mechanism of taper, is connect in conductor
Insulating gas or liquid, such as SF are filled between terminal and shell6Or insulating oil.
However, additional electrical isolation gas SF6While increasing cost, it is difficult that there is also recycling, has to greenhouse effects
There is a potential hazard (SF6Influence of the gas molecule to greenhouse effects is CO225000 times of molecule, while discharging in an atmosphere
SF6Gas lifetime is up to 3400.) the characteristics of；If filled silicon rubber element, cost is higher, and needs prolonged
Be heating and curing (such as 120 DEG C -130 DEG C of heating temperature, solidification needs 10-20min for the first time, and secondary curing needs 2h.), furthermore,
The bad guarantee of interface bond quality between thermoplastic insulation's shell and silica gel, increases the wind of product shelf depreciation and breakdown
Danger；If filling other polymer such as solid polyurethane or polybutylene terephthalate (PBT), need to carry out secondary injection to cavity
Modeling, and Shooting Technique defines the thickness of the polymer for filling, if polymer is thicker, be easy to cause inside filler
Shrinkage cavity the defects of.In addition, the bonding between the thermoplastic insulation's shell and voltage load-bearing part of fiberglass reinforced is often not fine and close enough,
Thus it is easy in the two contact interface there are subtle layering or gap, so as to cause the shelf depreciation and breakdown of product.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the deficiencies of the prior art and provide a kind of for mesohigh electrical connection
Insulating sleeve, manufacture can reach the insulation performance of heat cured insulation casing, while cost-saved, improve product recycling
Efficiency and the feature of environmental protection, and the cavity inside insulating sleeve does not need to add any insulant or insulating gas, but to set
The normal atmospheric conditions of tube cavity carry out vacuumize process.
A kind of effective ways it is a further object of the present invention to provide manufacture for the insulating sleeve of mesohigh electrical connection.
The technical solution adopted by the present invention to solve the technical problems is: a kind of insulation sleeve for mesohigh electrical connection
Pipe, including a voltage carrier, it is characterised in that: further include an insulation crust, a shielding part, the center setting of the insulation crust
One axially extending bore, the voltage carrier are arranged in the through-hole；The insulation crust is hollow sandwich setting, that is, described exhausted
One vacuum tightness chamber is set between the outer wall of edge shell and the peripheral wall of the through-hole；The shielding part is axially set in described exhausted
In the outer wall of edge shell.
Preferably, the vacuum tightness chamber is by an insulated end cover and the outer wall of the insulation crust, the week of the through-hole
Wall seals against each other connection composition: that is, the lower end of the peripheral wall of the lower end of the outer wall of the insulation crust and the through-hole is tightly connected,
The insulated end cover be located in the upper end of the outer wall of the insulation crust, the through-hole peripheral wall upper end and the company of sealing against each other
It connects.
Preferably, the vacuum degree of the vacuum tightness chamber is not less than 10-2Pa。
Preferably, semi-conductor layer is set between the voltage carrier and the peripheral wall of the through-hole.
Preferably, the axially disposed semiconductor layer in the peripheral wall of the through-hole, the semiconductor layer are one layer or more；
It is dielectrically separated between the semiconductor layer.
Preferably, the shielding part is metal or semiconductive material；The semiconductor layer be semiconductive varnish, adhesive plaster or
Conducting polymer；The insulation crust is made of the thermoplastic material of fiberglass reinforced.
The manufacturing method of insulating sleeve for mesohigh electrical connection, characterized by the following steps: 1) manufacture modeling
Expect sleeve body, which includes voltage carrier, shielding part and insulation crust；2) plastic sleeve body is placed on vacuum tank
In, insulated end cover is placed in welding pressure head；3) vacuum tank is vacuumized；4) to reach certain in vacuum tank
After vacuum degree, the upper end of the upper end of insulated end cover and insulation crust, through-hole is welded together, makes the outer wall of insulation crust, lead to
Vacuum tightness chamber is formd between the peripheral wall and insulated end cover three in hole.
Preferably, in the step 1), it is successively respectively completed the injection molding of shielding part and insulation crust on mold, is being molded
Voltage carrier is placed in going to for insulation crust in mold, form plastic sleeve body；Shielding part is conductive plastic part at this time.
Preferably, in the step 1), after voltage carrier and shielding part are put into mold, insulative housing portion, shape are molded
At plastic sleeve body；Shielding part can be conductive plastic part at this time, or metalwork.
Preferably, in the step 1), after voltage carrier is put into mold, it is molded insulative housing portion, then shielding is installed
Part forms plastic sleeve body.
Preferably, in the step 2, insulated end cover and plastic sleeve body carry out ultrasonic bonding, and welding pressure head has
The freedom degree of vertical direction displacement.
Preferably, in the step 2, insulated end cover and plastic sleeve body carry out spin friction welding, and welding pressure head is same
When with rotation and vertical direction displacement freedom degree.
Compared with prior art, the beneficial effects of the present invention are: 1) save the cost.Either SF6Or solid insulation or
Person's insulating oil, requires material cost；2) it is conducive to environmental protection.Discharge without greenhouse gases, toxic gas does not need to recycle yet and locate
Reason, manufacturing environment cleaning is pollution-free；3) light-weight.For opposite solid insulation and fluid insulation, the lighter in weight of vacuum sleeve；
4) without interface problem.For opposite solid insulation, without boundary defect between the solid shell and vacuum of vacuum insulation inside pipe casing；
5) without condensing temperature.Since the air in vacuum is very thin, so liquefied risk is not present in vacuum；6) safe and reliable.Due to
Vacuum is using negative pressure, compared to the SF of pressurization6, use is safer；7) high production efficiency.Compared to filling SF6Insulation sleeve
Pipe, needs first to vacuumize and refills SF6；Casing compared to silicone insulation saves gel time.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the embodiment of the present invention one；
Fig. 2 is the cross-sectional view of the embodiment of the present invention two；
Fig. 3 is the cross-sectional view of facility used in the manufacturing method of the present invention.
In the figure, it is marked as
1, voltage carrier；2, insulation crust；3, shielding part；4, insulated end cover；5, semiconductor layer；6, vacuum tank；
7, pressure head is welded；9, vacuum tightness chamber.
Specific embodiment
Embodiment with reference to the accompanying drawing is described further the present invention:
Embodiment one
As shown in Figure 1, a kind of insulating sleeve for mesohigh electrical connection, including voltage carrier 1, insulation crust 2, shielding
Part 3, insulated end cover 4, semiconductor layer 5, the axial embedded shielding part 3 in the outer wall inside of insulation crust 2, that is, shielding part 3 is carried along voltage
The axial direction of body 1 is embedded in the outer pars intramuralis of insulation crust 2；Axially extending bore is arranged in the center of insulation crust 2, and voltage carrier 1 is worn
In through-hole；To reduce partial discharge of the invention and improving resistance to voltage levels, semi-conductive layer 5 be placed on the periphery of voltage carrier 1 with
Between the inner circumferential of the through-hole at 2 center of insulation crust；Semiconductor layer 5 directly and 1 appearance face contact of voltage carrier, prevent insulation crust
2 and 1 poor contact of voltage carrier generate gap to generate shelf depreciation the phenomenon that.
Insulation crust 2 is hollow sandwich setting, that is, it is close that vacuum is arranged between the outer wall of insulation crust 2 and the peripheral wall of through-hole
Closed chamber room 9；Vacuum tightness chamber 9 is sealed against each other connection and is formed by insulated end cover 4 and the outer wall of insulation crust 2, the peripheral wall of through-hole:
That is, the lower end of the peripheral wall of the lower end and through-hole of the outer wall of insulation crust 2 is tightly connected, insulated end cover 4 be located in insulation crust 2
The upper end of outer wall, the upper end of the peripheral wall of through-hole simultaneously seal against each other connection；The vacuum degree of vacuum tightness chamber is not less than 10-2Pa.Screen
Shield 3 is made using metal or semiconductive material；Semiconductor layer 5 is made using semiconductive varnish, adhesive plaster or conducting polymer；Insulation
Shell 2 is made of the thermoplastic material of fiberglass reinforced, which is greater than 130 DEG C, and fusing point is greater than 200
℃。
Shielding part 3 has certain extension along the length direction of voltage carrier 1 in insulation crust 2, to reach scheduled screen
Capacitance between shield 3 and voltage carrier 1 can have different degrees of extension.Shielding part 3 is in the outer surface of insulation crust 2
It is reserved with binding post, binding post is equipped with blind hole, can be connect with the binding post on shielding part 3 by tapping screw or bolt,
So as to which shielding part 3 electrically to adjust and inhibit the electric field inside insulating sleeve, is effectively reduced voltage carrier 1
Occurs the risk of short circuit between earth element.
Embodiment two
As shown in Fig. 2, being provided with one semiconductor layer 5 between the outer surface of voltage carrier 1 and the peripheral wall of through-hole；Through-hole
Peripheral wall is axially inside provided with one semiconductor layer 5, that is, this layer of semiconductor layer 5 is embedded in logical along the axial direction of voltage carrier 1
The inside of hole peripheral wall；It is dielectrically separated between this two layers of semiconductor layer 5.To optimizing field distribution, improve electric discharge of the invention and
Pressure resistance.Other feature is the same as example 1.
Embodiment three
As shown in figure 3, the manufacturing method of the insulating sleeve for mesohigh electrical connection, includes the following steps:
1) plastic sleeve body is manufactured, which includes voltage carrier 1, shielding part 3 and insulation crust 2；On mold first
It is respectively completed the injection molding of shielding part 3 and insulation crust 2 afterwards, goes to placement voltage carrier 1 in mold in injection molding insulation crust 2,
Form plastic sleeve body；Shielding part is conductive plastic part at this time.
2) plastic sleeve body is placed in vacuum tank 6, insulated end cover 4 is placed in welding pressure head 7；Insulating end
Lid 4 and plastic sleeve body carry out ultrasonic bonding, and welding pressure head 7 has the freedom degree of vertical direction displacement.
3) vacuum tank 6 is vacuumized；4) to reach certain vacuum degree in vacuum tank 6, general vacuum degree is not
Lower than 10-2Pa, then insulated end cover 4 and the upper end of insulation crust 2, the upper end of through-hole are welded together, make the outer of insulation crust 2
Vacuum tightness chamber is formd between 4 three of wall, the peripheral wall of through-hole and insulated end cover.
Example IV
As shown in figure 3, the manufacturing method of the insulating sleeve for mesohigh electrical connection, includes the following steps:
1) plastic sleeve body is manufactured, which includes voltage carrier 1, shielding part 3 and insulation crust 2；In voltage carrier
After being put into mold with shielding part, it is molded insulative housing portion, forms plastic sleeve body；Shielding part can be conductive modeling at this time
Materials and parts, or metalwork.
2) plastic sleeve body is placed in vacuum tank 6, insulated end cover 4 is placed in welding pressure head 7；Insulating end
Lid carries out spin friction welding with plastic sleeve body, and welding pressure head has the freedom degree of rotation and vertical direction displacement simultaneously.
3) vacuum tank 6 is vacuumized；4) to reach certain vacuum degree in vacuum tank 6, general vacuum degree is not
Lower than 10-2Pa, then insulated end cover 4 and the upper end of insulation crust 2, the upper end of through-hole are welded together, make the outer of insulation crust 2
Vacuum tightness chamber is formd between 4 three of wall, the peripheral wall of through-hole and insulated end cover.
Embodiment five
As shown in figure 3, the manufacturing method of the insulating sleeve for mesohigh electrical connection, includes the following steps:
1) plastic sleeve body is manufactured, which includes voltage carrier 1, shielding part 3 and insulation crust 2；In voltage carrier
After being put into mold, it is molded insulative housing portion, then shielding part is installed, forms plastic sleeve body.
2) plastic sleeve body is placed in vacuum tank 6, insulated end cover 4 is placed in welding pressure head 7；Insulating end
Lid carries out spin friction welding with plastic sleeve body, and welding pressure head has the freedom degree of rotation and vertical direction displacement simultaneously.
3) vacuum tank 6 is vacuumized；4) to reach certain vacuum degree in vacuum tank 6, general vacuum degree is not
Lower than 10-2Pa, then insulated end cover 4 and the upper end of insulation crust 2, the upper end of through-hole are welded together, make the outer of insulation crust 2
Vacuum tightness chamber is formd between 4 three of wall, the peripheral wall of through-hole and insulated end cover.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (8)
1. a kind of insulating sleeve for mesohigh electrical connection, including a voltage carrier, it is characterised in that: further include outside an insulation
An axially extending bore is arranged in the center of shell, a shielding part, the insulation crust, and the voltage carrier is arranged in the through-hole；
The insulation crust is hollow sandwich setting, that is, is arranged between the outer wall of the insulation crust and the peripheral wall of the through-hole
One vacuum tightness chamber；The shielding part is axially set in the outer wall of the insulation crust；The vacuum tightness chamber is by one
Insulated end cover seals against each other with the peripheral wall of the outer wall of the insulation crust, the through-hole and connect composition: that is, the insulation crust
The lower end of the peripheral wall of the lower end of outer wall and the through-hole is tightly connected, and the insulated end cover be located in the outer wall of the insulation crust
Upper end, the through-hole peripheral wall upper end and seal against each other connection；It is set between the voltage carrier and the peripheral wall of the through-hole
Set semi-conductor layer.
2. the insulating sleeve for mesohigh electrical connection as described in claim 1, it is characterised in that: the vacuum tightness chamber
Vacuum degree be not less than 10-2Pa。
3. the insulating sleeve for mesohigh electrical connection as described in claim 1, it is characterised in that: in the peripheral wall of the through-hole
The axially disposed semiconductor layer, at least two layers of the semiconductor layer；It is dielectrically separated between the semiconductor layer.
4. the insulating sleeve for mesohigh electrical connection as described in claims 1 to 3 is any, it is characterised in that: the screen
Shield is metal or semiconductive material；The semiconductor layer is semiconductive varnish, adhesive plaster or conducting polymer；Outside the insulation
Shell is made of the thermoplastic material of fiberglass reinforced.
5. the manufacturing method of the insulating sleeve for mesohigh electrical connection as described in claims 1 to 3 is any, feature exist
In: include the following steps:
1) plastic sleeve body is manufactured, which includes voltage carrier, shielding part and insulation crust；
2) plastic sleeve body is placed in vacuum tank, insulated end cover is placed in welding pressure head；Insulated end cover and modeling
Expect that sleeve body is welded using ultrasonic bonding or spin friction, the welding pressure head of ultrasonic bonding has vertical direction displacement
Freedom degree；The welding pressure head of spin friction welding has the freedom degree of rotation and vertical direction displacement simultaneously；
3) vacuum tank is vacuumized；
4) after the vacuum degree after reach certain in vacuum tank, the upper end of the upper end of insulated end cover and insulation crust, through-hole is welded
It is connected together, makes to form vacuum tightness chamber between the outer wall of insulation crust, the peripheral wall of through-hole and insulated end cover three.
6. manufacturing method as claimed in claim 5, it is characterised in that: in the step 1), be successively respectively completed on mold
The injection molding of shielding part and insulation crust places voltage carrier in going to for insulation crust of injection molding, forms plastic bushing sheet in mold
Body；Shielding part is conductive plastic part at this time.
7. manufacturing method as claimed in claim 6, it is characterised in that: in the step 1), put in voltage carrier and shielding part
After entering mold, it is molded insulative housing portion, forms plastic sleeve body；Shielding part is conductive plastic part or metalwork at this time.
8. manufacturing method as claimed in claim 7, it is characterised in that: in the step 1), after voltage carrier is put into mold,
It is molded insulative housing portion, then shielding part is installed, forms plastic sleeve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847364.2A CN106356159B (en) | 2016-09-26 | 2016-09-26 | A kind of insulating sleeve and its manufacturing method for mesohigh electrical connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847364.2A CN106356159B (en) | 2016-09-26 | 2016-09-26 | A kind of insulating sleeve and its manufacturing method for mesohigh electrical connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106356159A CN106356159A (en) | 2017-01-25 |
| CN106356159B true CN106356159B (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610847364.2A Active CN106356159B (en) | 2016-09-26 | 2016-09-26 | A kind of insulating sleeve and its manufacturing method for mesohigh electrical connection |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112171199A (en) * | 2020-09-25 | 2021-01-05 | 无锡金羊管件有限公司 | Welding process for stainless steel pipe fitting |
| CN113410723B (en) * | 2021-06-28 | 2023-03-21 | 江苏弘策机电科技有限公司 | One-step forming die for sleeve connecting terminal |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1358006A1 (en) * | 1985-04-11 | 1987-12-07 | Предприятие П/Я Р-6601 | Sealed leadvin into evacuated chamber |
| CN104916377A (en) * | 2015-07-06 | 2015-09-16 | 麦克奥迪（厦门）电气股份有限公司 | Insulating bush made of thermoplastic material and production method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3910931A1 (en) * | 1989-04-05 | 1990-10-11 | Siegfried Dr Ing Straemke | Conductor bushing in a vacuum container |
| DE102005059754B4 (en) * | 2005-12-09 | 2010-05-27 | Siemens Ag | Injection molded outer cone bushing |
| EP1845596A1 (en) * | 2006-04-13 | 2007-10-17 | ABB Research Ltd | An electric connection device and a method of producing such a device |
| RU2479056C2 (en) * | 2011-06-14 | 2013-04-10 | Андрей Юрьевич Парфёнов | Hv insulator |
| CN104900350B (en) * | 2015-05-14 | 2017-03-01 | 江苏沃能电气科技有限公司 | A kind of dry-type capacitance type compound insulation sleeve pipe production method |
-
2016
- 2016-09-26 CN CN201610847364.2A patent/CN106356159B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1358006A1 (en) * | 1985-04-11 | 1987-12-07 | Предприятие П/Я Р-6601 | Sealed leadvin into evacuated chamber |
| CN104916377A (en) * | 2015-07-06 | 2015-09-16 | 麦克奥迪（厦门）电气股份有限公司 | Insulating bush made of thermoplastic material and production method thereof |
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| CN106356159A (en) | 2017-01-25 |
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