CN101859997A - High-voltage cable joint with improved electrode - Google Patents
High-voltage cable joint with improved electrode Download PDFInfo
- Publication number
- CN101859997A CN101859997A CN201010141453A CN201010141453A CN101859997A CN 101859997 A CN101859997 A CN 101859997A CN 201010141453 A CN201010141453 A CN 201010141453A CN 201010141453 A CN201010141453 A CN 201010141453A CN 101859997 A CN101859997 A CN 101859997A
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- China
- Prior art keywords
- mould
- shell
- electrode
- voltage cable
- fittings body
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 238000000465 moulding Methods 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 230000008719 thickening Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 description 26
- 239000011810 insulating material Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000004020 conductor Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 230000001788 irregular Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
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- Processing Of Terminals (AREA)
- Cable Accessories (AREA)
Abstract
A high voltage cable connector comprising a housing surrounding a connector body, wherein said housing layer has an outwardly projecting rim, and a method of manufacturing said high voltage cable connector. The contact surface between the inner surface of the housing and the connector body is smooth and seamless. In one embodiment of the invention, the rim on the housing provides a gripping location on the outer layer during molding of the fitting. In another embodiment of the present invention, the high voltage cable connector comprises a high voltage electrode with a seamless surface.
Description
Technical field
The present invention relates to high-field electrode and cable joint.Especially, the present invention relates to a level and smooth high-field electrode and the high-voltage cable joint and the manufacture method thereof that have shell.
Background technology
When making high-tension apparatus, a kind of contact surface of two kinds of different materials of conductive and another kind of insulation must be level and smooth.The irregular meeting on described surface causes voltage power to be gathered, thereby reduces the optimum performance that joint can be brought into play under trouble-proof situation.
One is used the shell of conductive resilient materials manufacturing to cover on the insulating surface of a high-voltage cable joint.Described tectal function is the grounding electrode of integral connector and mechanically protects described joint.Surface between described cover layer and the described joint must be need level and smooth, and preferable be seamless.
But comprising, current cladding technique coats a conductive layer.This cover layer of coating approaches, and can not provide enough protections for described fittings body.Therefore, an extra additional conductive layer must be coated when assembling.
But the hollow high-field electrode of cylinder type that uses the electrically conductive elastic material to manufacture provides at the core of a high-voltage cable joint usually, and two high-tension cables engage one another therein.The connector of the electric conductor of the embedded binding cable of described high-field electrode also provides level and smooth superficies, and here the high-field electrode of described conduction is to link with described insulating joint body.
Summary of the invention
Therefore, the object of the invention provides and changes good high-field electrode and cable joint.
Therefore, the present invention provides a high-voltage cable joint on the one hand, and it comprises a fittings body that is wrapped in shell.Described shell has a wheel rim that outwards stretches at a minimum end.When in casting during described high-voltage cable joint, described wheel rim on shell provides one to hold assembly on shell, thereby when the described fittings body of casting, the inner surface of described shell and described mould forms level and smooth and contact closely.As a result, the surface between the insulator of described shell and joint is level and smooth with seamless.
In an example embodiment of the present invention, described shell is with a shell mould manufacturing, and described mould comprises that one forms the shell casting cavity of complementary type with shell, and one near the first and second recessed joint spaces at the mould injection end.The described first and second recessed joint spaces produce a wheel rim and that outwards stretches thickening respectively and inwardly stretch the wheel rim of thickening on shell.A kind of casting material is annotated into described shell casting cavity and is formed described shell.Described inside stretching, extension wheel rim provides one to hold the surface, in order to from mould with the described shell demoulding.
In further example embodiment of the present invention, described high pressure connection body is with a fittings body mould manufacturing.Described fittings body mould comprises the fittings body casting cavity of an outer joint mould and and the shape complementarity of described high-voltage cable joint.Be molded described fittings body, have the shell of outside stretching, extension wheel rim to be placed on the surface, inside of described outer joint mould with one, one of them holds the wheel rim of shell at the lip-deep groove in the inside of outer joint mould.Jue Yuan casting material injects described fittings body casting cavity then, between shell and fittings body to forming level and smooth seamless molded contact surface.
On the other hand, the invention provides one and have high-field electrodes level and smooth and seamless superficies, its formation is in the casting operation and form inherently during without any the mechanical grinding step.
In an example embodiment of the present invention, described high-field electrode is made with two steps.First step provides an outer mould, and it comprises a first step outer electrode mould (the outer mould of E1) and a first step internal layer electrode mould (E1 internal layer mould).Described outer mould comprises outer casting cavity, surface thereof and a described superficies complementation.The outer mould of described E1 comprises a minimum mould opening.Described E1 internal layer mould is made up of a plurality of little parts that extremely can remove from the mould opening of the outer mould of E1.The casting material injects among the skin casting cavity of the outer mould that has combined, to form described skin.Carrying out the described outer demoulding, at first is the parts of dismantling described E1 internal layer mould through the opening of the outer mould of described E1.Then, described skin can remove by flexible folding in the outer mould opening of described E1.
In second step, the described skin of producing in first step is at first to be placed on one to comprise within the internal layer mould of an internal layer casting cavity.First step form outer field in the presence of the casting material be injected among the described internal layer casting cavity therefore new molded internal layer and the described outer high-field electrode that a monolithic does not have the surface seam that forms.
The present invention has many advantages.For example, the superficies of described high-field electrode of the present invention be seamless inherently and do not need through the polishing; Therefore, the high-field electrode that is produced will not have the irregular surface that produces because of polishing.Described high-field electrode is not because of there being irregular surface, and this can make these joints lower failure rate when conventionally test.
Described shell of the present invention only is provided as the elaboration example, can be the 3-5 millimeters thick and is placed on the core of described joint, forms grounding electrode and provides the mechanicalness protection for fittings body.In one of them example embodiment of the present invention, but the conductive material of described shell is a synthetic rubber, to make described joint surface ground connection.
According to the present invention, the internal layer surface of described shell most preferably is seamless, to guarantee with described high-voltage cable joint body one level and smooth contact being arranged.
Description of drawings
Fig. 1 a is the perspective view of one of them high-voltage cable joint embodiment of the present invention, and Fig. 1 b is its longitudinal axis sectional drawing.
Fig. 2 is a longitudinal axis sectional drawing with the shell mould of the shell of the identical embodiment of production the present invention.
Fig. 3 is a longitudinal axis sectional drawing with the fittings body mould of the high-voltage cable joint of the identical embodiment of production the present invention.
Fig. 4 a is one of them longitudinal axis sectional drawing of partly making high-field electrode embodiment through first casting step of the present invention.Fig. 4 b is one of them longitudinal axis sectional drawing through the high-field electrode of the second first casting step of the identical embodiment of the present invention.
Fig. 5 a is a longitudinal axis sectional drawing with the outer field outer mould of high-field electrode of the identical embodiment of production the present invention.Fig. 5 b be as
The cross-sectional view of the identical mould shown in Fig. 5 a.
Fig. 6 is a longitudinal axis sectional drawing with the internal layer mould of the high-field electrode internal layer of the identical embodiment of production the present invention.
Embodiment
As here with claims in employed, " comprising " is meant and comprises described element but do not get rid of other." mechanicalness polishing " is meant any part of mechanically removing material on the electrode with polishing or other abrasive action.
Shown in Fig. 1 a and 1b, described high-voltage cable joint 100 comprises a cylinder type fittings body 14 that hollow core 16a is arranged.Two conical end 6 and 8, each all has hollow a cylinder type core 16b and a 16c respectively, and described hollow cylinder type core 16b and 16c are stretched out by the circular distal of described two fittings bodies 14.Circular cone 6 provides in injection terminal 20, and circular cone 8 provides in another end 22.The core of described fittings body 16a and described conical end 16b and 16c is concentric, and integrally aligned to forming a passage, to hold described high-tension cable.Shell 2 is wrapped in the cylinder type outside of described fittings body 14.The wheel rim 4 that outwards stretches stretches out in radial mode from described wherein one side of injecting the shell 2 of end 20.One cylinder type high-field electrode 12 is to be implanted in the described cylinder type fittings body 14, and is wrapped in the zone line of hollow core 16a.Two stress cone 18a and 18b are implanted in respectively within two described conical end 6 and 8, and inwardly stretch to described fittings body 14.Described cylinder type fittings body 14 is by an insulating material manufacturing.Described shell 2, but electrode 12 and stress cone 18a and 18b are made by comprising an elastomeric conductive material.
Go to Fig. 2 now, shown shell mould 102 is that manufacturing is used as above-mentioned shell 2.But inject conductive material in its inside and the shell casting cavity 24 that forms described shell 2 (shown in Fig. 1 a and 1b) is long and narrow cylindrical shape that provided between the outer mould 30 of a cylinder type and one second less concentric circles cartridge type internal layer mould 32.Two spaces that stretch also are provided in described cavity.Described first space 26 that stretches is created by one first recessed joint 27 of described outer mould 30, and described second space 28 that stretches is created by one second recessed joint 29 on the described cylinder type internal layer mould 32.The the one 27 and the 2 29 recess all is the rectangle that has elongated, and it is parallel along the injection terminal 34 of described mould circularly, and be edge balance with the outer mould 30 of described cylinder type, but the more approaching described edge of the arrangement of more described first recessed joint 27 of the arrangement of described second recessed joint 29.Described recess 27 and 29 casting can make during operation one outwards stretch wheel rim 4 (shown in Fig. 1 a and 1b) and inwardly stretch wheel rim (not diagram) as described in each limit formation of shell 2.The inside stretching, extension wheel rim of described shell 2 provides the surface that can hold, in order to do the shell demoulding.Described inside stretching, extension wheel rim removes after described shell 2 demouldings, the remaining outside stretching, extension wheel rim of having at described shell 2 edges 4.
Fig. 3 shows that a fittings body mould 108 is for making described high-voltage cable joint 100 (as shown in Figure 1a).Described shell 2, described electrode 12 and described stress cone 18a and the position of 18b in fittings body mould 108 also are presented at last figure so that understand.The mould of present embodiment comprises an outer joint mould 48, and described outer joint mould 48 has a cylinder type mid portion 44 and two conical end 36 and 38.At edge, a rectangular channel 40 and this edge balance and parallel are circularly arranged near the mid portion 44 that injects end 36.Cylinder profile shaft 42 can be used as described internal layer mould.After axle 42 assembles the bottom of described mould, described at the stress cone 18a that injects terminal 36 bottoms, a preformed electrode 12 and the stress cone 18b on the top of the other end that has the hollow cylinder shape center in the centre disposes round described axle 42 in proper order.Described stress cone is placed to and inwardly stretches to the fittings body casting cavity 46.Then, described shell 2 is flatly placed along the internal layer surface of the cylinder type mid portion 44 of described outer joint mould 48, so that described outside stretching, extension wheel rim 4 injects described groove 40.
The fittings body mould of having assembled 108 shown in Figure 3 is the process preheating before injecting insulating material by the injection terminal 36 of described fittings body mould 108.After the wheel rim 4 that stretches meshes with described groove 40, on described shell 2, provide one to hold power, so that when injecting described insulating material, described shell 2 is to remain in its predetermined position.Described preheat mode and pressure along the insulating material on described shell internal layer surface, can guarantee that described shell 2 can maintain the fixed position, and form tight contact with the internal layer of described mid portion 44 surface and when the injection process described shell 2 can not play crease.When the insulating material in fittings body casting cavity 46 is fixed to the described fittings body 14 of formation and described cone 6 and 8 (shown in Fig. 1 b), the level and smooth contact surface between described shell 2 and described insulating material has just formed.
Mention Fig. 4 a and 4b now, the high-field electrode 104 of partly making as shown in the figure comprises a thin skin 50.Described outer 50 have seamless superficies.The internal layer 52 of described high-field electrode is molded in second casting step afterwards, to produce the high-field electrode 12 shown in Fig. 4 b.
Mention Fig. 5 a and 5b now, the outer mould 106 that confession is used for the first casting step of described high-field electrode comprises a whole first step outer electrode mould (the outer mould of E1) 56 that has opening 62 in two ends, with one with 60, one cylinder profile shafts 59 of TR thin rubber big envelope and six first step internal layer electrode moulds (E1 internal layer mould) 57 that metal parts 58 is formed.In described first casting step, described rubber cuff 60 and axle 59 are kept described metal parts at its position of casting.These parts are tiny as can to remove from the opening 62 of the outer mould 56 of described E1., when described outer mould cavity 54 is injected into the casting material and after forming skin 50 shown in Fig. 4 a,, described axle 59 is drawn out of, and described six metal partss 58 are removed from an opening 62 of the outer mould 56 of E1.Be removed in flexible folding mode after the described rubber cuff 60, semi-finished high-field electrode 104 also removes with the same manner shown in Fig. 4 a subsequently.
Mention Fig. 6 now, the internal layer mould 110 of the second molded step of a described high-field electrode of confession, it comprises 64 and second step internal layer electrode moulds (E2 internal layer mould) 66 of one second step outer electrode mould (the outer mould of E2).Except that the outer mould 64 of described E2 can be opened into two parts, the outer mould 64 of described E2 has and described E1 outer mould 56 (shown in Fig. 5 a and 5b) identical yardstick, shape and mould opening.The internal layer surface of the outer mould 64 of described E2 is that the surface with described skin 50 in first step manufacturing is complementary.Described outer 50 is to be placed on the internal layer surface of the outer mould 64 of described E2.Described E2 internal layer mould 66 injects the outer mould 64 of described E2 by the opening 70 of the outer mould 64 of described E2 subsequently.The described described internal layer mould of definition space cavity 68 between skin 50 and E2 internal layer mould 66.Described internal layer 52 (shown in Fig. 4 a) be subsequently the molding material is injected as described in the internal layer mould cavity 68 and finish, said outer 50 (shown in Fig. 4 a) and as described in new molded internal layer 52 formation one monolithic at the seamless high-field electrode 12 of skin (shown in Fig. 4 b).Described high-field electrode 12 (shown in Fig. 4 b) can be as described in open two part demouldings of the outer mould 66 of E2.
In the present invention, the described mould material of manufacturing shell 2 and high-field electrode 12 can be to add carbon black powder to increase the synthetic rubber of conductivity.The mould material of described manufacturing fittings body 14 can be the insulating material of high viscosity fluid kenel.Described insulating material can be a silicon compound, and it forms a class rubber part after heating.
Though the present invention records and narrates with reference to indivedual embodiment, those skilled in the art in the invention can know and know, detailed characteristics of the present invention can other change and put into practice, and does not need to depart from marrow of the present invention and scope set forth in the present invention.
For example, those skilled in the art in the invention can know and know that the outside stretched out structure on described shell can be at diverse location, use with difformity and size, as long as it can provide partly feasible once holding when the injection process of described shell.In addition, it should be noted that described electrode can be assembled in different positions with stress cone in fittings body, can be when injecting described insulating material according to user's preference with requirement and different local injection of described joint.
In Fig. 6, the outer mould 64 of described E2 is to describe to be opened into two parts.Yet a person skilled in the art can know and know the outer mould 64 of described E2 can comprise crossing two parts more, and can open the usefulness for described high-field electrode 12 demouldings.
Claims (9)
1. high-voltage cable joint, it is characterized in that described high-voltage cable joint comprises a fittings body that is wrapped in by shell, described shell comprises an outside stretching, extension wheel rim on a minimum end, described outside stretching, extension wheel rim provides one to hold partly in the middle of described high-voltage cable joint molded on described shell, so that keeps a level and smooth and contact closely between the superficies of described shell and described fittings body with providing.
2. high-voltage cable joint as claimed in claim 1 further comprises a molded high-field electrode and two stress cones that advance in the described fittings body.
3. high-voltage cable joint as claimed in claim 2, wherein said high-field electrode have seamless superficies.
4. a manufacturing comprises the method for the high-voltage cable joint of a fittings body that is wrapped in by shell, and wherein said shell has one outwards to stretch wheel rim at a minimum end, and described method comprises the following steps:
A) provide a shell mould, wherein said shell mould comprise one with the shell mould cavity of described shell external form complementation and at a minimum recessed joint for the wheel rim that forms a thickening that stretches out at described shell;
B) in described shell mould cavity, inject the mould material to form described shell;
C) to hold described wheel rim with the described shell demoulding;
D) with the molded described fittings body of the following step:
I) provide a fittings body mould, comprise an outer joint mould and one and the fittings body mould cavity of described high-voltage cable joint shape complementarity;
Ii) described shell is placed on the internal layer surface of described outer joint mould;
Iii), hold at the lip-deep described shell of described outer joint mould internal layer by described wheel rim;
Iv) in described fittings body mould cavity, inject the mould material, between described shell and described fittings body to form level and smooth, a seamless molded contact surface.
5. method as claimed in claim 4, wherein said method further are included in a step that has a high-field electrode on seamless outer layer surface are provided in the described fittings body mould.
6. the high-field electrode of a high-voltage cable joint, wherein said high-field electrode comprises a seamless outer layer surface.
7. high-field electrode as claimed in claim 6, wherein said seamless outer layer surface are inherently in molding process and following formation of situation without any the mechanicalness polishing.
8. a manufacturing is used for the method for the high-field electrode of high-voltage cable joint, and wherein said high-field electrode comprises a seamless outer layer surface, and described method comprises the following steps:
A) skin of molded described electrode, wherein said skin is seamless at described electrode superficies; With
B) there is the internal layer of lower mould one described electrode at the molded described outer mould of step (a), thereby makes described outer and inner layer form a monolithic high-field electrode.
9. method as claimed in claim 8, wherein said outer field moldedly further may further comprise the steps:
A) provide an outer mould, described outer mould comprises that one has the first step outer electrode mould and a first step internal layer electrode mould of mould opening, wherein said outer mould comprises that further one further comprises a plurality of enough tiny parts that are removed with the outer mould cavity and the described first step internal layer electrode mould of described outer shape complementarity from the described mould opening of described first step outer electrode mould;
B) in described outer mould cavity, inject the mould material to form described skin;
C) thus by described parts are removed described first step internal layer electrode mould from the described mould opening of described first step outer electrode mould;
D) the flexible described skin of folding and remove skin behind the described flexible folding with the described outer demoulding with by described mould opening.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HK09103148.6 | 2009-04-02 | ||
| HK09103148A HK1124481A2 (en) | 2009-04-02 | 2009-04-02 | High voltage cable joint with improved electrodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101859997A true CN101859997A (en) | 2010-10-13 |
Family
ID=40863489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010141453A Pending CN101859997A (en) | 2009-04-02 | 2010-03-31 | High-voltage cable joint with improved electrode |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101859997A (en) |
| HK (1) | HK1124481A2 (en) |
| MY (2) | MY178039A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10145930A (en) * | 1996-11-08 | 1998-05-29 | Sumitomo Electric Ind Ltd | Diameter expanding jig for rubber insulator unit |
| CN1192600A (en) * | 1997-03-03 | 1998-09-09 | 住友电气工业株式会社 | Premolded joint unit for power cable connecting portion |
| US20060080831A1 (en) * | 2004-10-14 | 2006-04-20 | Nguyen Nga K | Method of delivering geometric stress relief element to high voltage cable terminations |
| CN2836286Y (en) * | 2005-06-01 | 2006-11-08 | 上海三原电缆附件有限公司 | Integral preformed rubber piece for high-voltage cable connection |
| CN2909654Y (en) * | 2006-06-12 | 2007-06-06 | 浙江永锦电力器材有限公司 | Protector for high-tension cable middle joint |
-
2009
- 2009-04-02 HK HK09103148A patent/HK1124481A2/en not_active IP Right Cessation
-
2010
- 2010-03-11 MY MYPI2015000620A patent/MY178039A/en unknown
- 2010-03-11 MY MYPI2010001078A patent/MY159746A/en unknown
- 2010-03-31 CN CN201010141453A patent/CN101859997A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10145930A (en) * | 1996-11-08 | 1998-05-29 | Sumitomo Electric Ind Ltd | Diameter expanding jig for rubber insulator unit |
| CN1192600A (en) * | 1997-03-03 | 1998-09-09 | 住友电气工业株式会社 | Premolded joint unit for power cable connecting portion |
| US20060080831A1 (en) * | 2004-10-14 | 2006-04-20 | Nguyen Nga K | Method of delivering geometric stress relief element to high voltage cable terminations |
| CN2836286Y (en) * | 2005-06-01 | 2006-11-08 | 上海三原电缆附件有限公司 | Integral preformed rubber piece for high-voltage cable connection |
| CN2909654Y (en) * | 2006-06-12 | 2007-06-06 | 浙江永锦电力器材有限公司 | Protector for high-tension cable middle joint |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1124481A2 (en) | 2009-07-10 |
| MY178039A (en) | 2020-09-30 |
| MY159746A (en) | 2017-01-31 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20101013 |