CN209545119U - Cable termination - Google Patents

Cable termination Download PDF

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Publication number
CN209545119U
CN209545119U CN201822109991.3U CN201822109991U CN209545119U CN 209545119 U CN209545119 U CN 209545119U CN 201822109991 U CN201822109991 U CN 201822109991U CN 209545119 U CN209545119 U CN 209545119U
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CN
China
Prior art keywords
cable
insulating sleeve
cable termination
stress cone
high pressure
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.)
Withdrawn - After Issue
Application number
CN201822109991.3U
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Chinese (zh)
Inventor
张晓刚
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.)
Hong Kong Haoyue International Co Ltd
Original Assignee
Hong Kong Haoyue International 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 Hong Kong Haoyue International Co Ltd filed Critical Hong Kong Haoyue International Co Ltd
Priority to CN201822109991.3U priority Critical patent/CN209545119U/en
Application granted granted Critical
Publication of CN209545119U publication Critical patent/CN209545119U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of cable termination, including capacitive insulating sleeve, the insulating sleeve is equipped with the cavity for accommodating cable, stress cone is equipped between insulating sleeve and cable, the stress cone is located remotely from the other end of the end of incoming cables of cable termination, the insulating sleeve includes multiple capacitance plates being arranged alternately with insulating layer, wherein innermost capacitance plate is earthing, outermost capacitance plate is high pressure screen, the high pressure screen is led core with the cable of cable and is electrically connected, so that the cable termination that the utility model is created is when installing connection with cable, cable need to remove the part reduction for the main insulating layer that cable is led outside core, when cable install it is not in place or when needing to adjust, the length for intercepting and wasting is needed to greatly reduce;Moreover, can have the gap for exempting from filling between insulating sleeve and cable.

Description

Cable termination
Technical field
The invention is related to high-voltage electrical appliances field, is related to a kind of cable termination for high-tension cable.
Background technique
Existing cable termination generally includes stress cone, insulating sleeve and the dielectric for being filled in inner space, wherein The effect of stress cone (also referred to as stress set) is to improve cable root electric field strength;The effect of insulating sleeve be contain stress cone and absolutely Edge medium, and support cable terminal and increase outer creepage distance, the upper flange of insulating sleeve end and the end of cable conductor Fixed, the lower flange of insulating sleeve root is fixed and is connected to the grounded part of cable sheath;The effect of dielectric is filling Air gap in electric field prevents the generation of electric discharge.
In general, cable termination should wipe the semi-conductive layer for entering the cable section of cable termination off when constructing, to meet height The insulating requirements of pressure over the ground.Stress cone should be sleeved on this position, and current-carrying part is contacted with semi-conductive layer, insulated part with Cable insulation contact.
In recent years, there is (such as patent CN2582240Y) in a kind of dry-type capacitance type cable termination technology, there is great progress. Due to being embedded in capacitance plate in insulating sleeve, internal electric field is improved, dielectric level is improved.Especially patent CN105743053A innermost layer capacitance plate and cable conductor form the compartments such as high pressure, are then not required between cable and insulating sleeve Filled media thoroughly solves the problems, such as media leaks.
But it as general cable termination, the semi-conductive layer of cable end also needs to wipe off, also needs polishing very It is smooth, and this section of distance is longer, and must construct at the scene (many times on tower), difficulty is larger.Moreover, such as cable termination When damage needs replacing, it is necessary to amputate this longer one section of cable, from one section of equally long cable is newly wiped off, not only increase and apply Work difficulty, it is also possible to because reserved cable falls short of and can not construct, or even need replacing new cable.
Summary of the invention
The defect for aiming to overcome that the prior art of the invention provides a kind of construction and installation and the convenient electricity of replacement Cable terminal.
To achieve the above object, the invention adopts the technical scheme that
A kind of cable termination, including capacitive insulating sleeve 7, the insulating sleeve 7 is equipped with for accommodating cable 10 Cavity, is equipped with stress cone 4 between insulating sleeve 7 and cable 10, and the stress cone 4 is located remotely from the end of incoming cables of cable termination The other end, the insulating sleeve 7 includes multiple capacitance plates being arranged alternately with insulating layer, wherein innermost capacitance plate is ground connection Screen 6, outermost capacitance plate are high pressure screen 5, and the high pressure screen 5 is led core with the cable of cable 10 and is electrically connected.
Preferably, there is the gap for exempting from filling between insulating sleeve 7 and cable 10.
Preferably, mounting flange 9 and upper flange 2 are respectively equipped at the both ends of insulating sleeve 7, cable 10 is from mounting flange 9 One end penetrates in insulating sleeve 7, and the stress cone 4 is located at close to one end where upper flange 2 in cable termination, in insulating sleeve Oversheath 8 is arranged with outside 7.
Preferably, multiple capacitance plates in the insulating sleeve 7 successively shorten from inside to outside, and gradually to whole far from cable One end of the end of incoming cables at end deviates.
Preferably, the stress cone 4 includes insulated part 43 and current-carrying part 41, and one end of the insulated part 43 is The tapered end 42 cooperated with insulating sleeve 7, the lateral surface at tapered end 42 are closely pressed with the tapered slot medial surface of 7 one end of insulating sleeve Cooperation is connect, the current-carrying part 41 is located at the tip inside at the tapered end 42, and current-carrying part 41 is electrically connected with earthing 6.
Preferably, the current-carrying part 41 includes from interior from outer and leading to the inlet wire extreme direction extension far from cable termination Electric valve 44.
Preferably, the cable termination is additionally provided with the elastic hold-down mechanism 3 for being in close contact stress cone 4 and insulating sleeve 7.
Preferably, the upper flange 2 includes the seal closure 21 connecting with insulating sleeve 7 and leads core company with the cable of cable 10 The end cap 22 connect, cable of 22 sets of the end cap in cable 10 are led on core, and the other end extends to outside seal closure 21 and connecting terminal 1 Connection.
Preferably, the end cap 22 is fixedly connected by bracket 23 and bracket screw with insulating sleeve 7.The insulation The high pressure screen 5 of sleeve 7 is electrically connected by bracket screw and bracket 23 with end cap 22.
Preferably, the cable termination is additionally provided with the elastic hold-down mechanism 3 for being in close contact stress cone 4 and insulating sleeve 7; The elastic hold-down mechanism 3 is arranged between upper flange 2 and insulating sleeve 7, answers including spring 31 and with what stress cone 4 cooperated Power bores compressed part 32, and 31 one end of spring is withstood on bracket 23, and the other end pushes stress cone 4 and insulation by stress cone compressed part 32 Sleeve 7;The earthing 6 is electrically connected with mounting flange 9.
There are two features for the cable termination tool of the invention, first is that stress cone, which is not arranged in cable, enters cable termination End of incoming cables, but it is arranged far from the other end (high-voltage end) of end of incoming cables;Second is that the capacitance plate in capacitor type insulating sleeve is not Including traditional high pressure screen, outside, but including earthing, high pressure screen is outside for earthing;So that the cable of the invention is whole When installing connection with cable, the semi-conductive layer length that cable need to be wiped off reduces at end, not only reduces the difficulty of site operation in this way Degree, improves speed of application, also to need to intercept and waste when cable installation is not in place or needs replacing cable termination Cable length greatly reduce.
In addition, the cable termination of the invention, so that gap when installation cable between insulating sleeve and cable is not necessarily to Filling, substantially increases installation effectiveness, reduces costs.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the cable termination of the invention.
Specific embodiment
The embodiment provided below with reference to Fig. 1 further illustrates the specific embodiment of the cable termination of the invention. The cable termination of the invention is not limited to the following description.
The cable termination of the invention, including capacitive insulating sleeve 7, the insulating sleeve 7 is equipped with for accommodating The cavity of cable 10, is equipped with stress cone 4 between insulating sleeve 7 and cable 10, and the stress cone 4 is located remotely from cable termination The other end of end of incoming cables, the insulating sleeve 7 includes multiple capacitance plates being arranged alternately with insulating layer, wherein innermost capacitor Screen is earthing 6, and outermost capacitance plate is high pressure screen 5, and the high pressure screen 5 is led core with the cable of cable 10 and is electrically connected.
There are two features for the cable termination tool of the invention, first is that stress cone is not arranged in the end of incoming cables of cable entrance, But it is arranged far from the other end of end of incoming cables;Second is that the capacitance plate in capacitive insulating sleeve is not that traditional high pressure screen exists Interior, outside, but including earthing, high pressure screen is outside for earthing;So that the cable termination of the invention is installed with cable When connection, the semi-conductive layer length that cable need to be wiped off reduces, and not only reduces the difficulty of site operation in this way, improves construction speed Degree also makes when cable is installed not in place or needs the cable length for intercepting and wasting to subtract significantly when needing replacing cable termination It is few.Including traditional cable termination is all high pressure screen, outside, stress cone setting is in end of incoming cables, that is, low-pressure end, the present invention for earthing The cable termination of creation has broken the layout structure of traditional cable terminal completely, proposes completely new layout structure.
Moreover, there is the gap for exempting from filling between insulating sleeve 7 and cable 10.Due to being ground electricity on the inside of insulating sleeve Position, so that gap when installation cable between insulating sleeve and cable substantially increases installation effectiveness, reduce into without filling This, prevents liquid or gas medium from leaking, substantially increases security reliability.Certainly, it is situated between if insulation have to be filled in installation Matter (such as transformer oil, SF6 gas), also possible, this still falls within the protection scope of the invention.
As shown in Figure 1, being a preferred embodiment of the invention, the cable termination of the present embodiment includes capacitive Insulating sleeve 7, the insulating sleeve 7 are equipped with the cavity for accommodating cable 10, are respectively equipped with laxative remedy at the both ends of insulating sleeve 7 Orchid 9 and upper flange 2 are equipped with stress cone 4 between insulating sleeve 7 and cable 10, oversheath 8 are arranged with outside insulating sleeve 7.Institute The one end for stating lower flange 9 is the end of incoming cables of cable termination, and cable 10 penetrates in insulating sleeve 7 from 9 one end of lower flange, the stress Cone 4 is located remotely from the other end of the end of incoming cables of cable termination, that is, is located in cable termination close to one end where upper flange 2, position In one end far from lower flange 9.
Multiple capacitance plates being arranged alternately with insulating layer are equipped in the core of the insulating sleeve 7, wherein innermost Capacitance plate is earthing 6, and outermost capacitance plate is high pressure screen 5, and high pressure screen 5 is led core with the cable of cable 10 and is electrically connected, and is grounded Screen 6 is for being grounded.Preferably, earthing 6 is grounded by mounting flange 9.Further, multiple capacitors in the insulating sleeve 7 Screen successively shortens from inside to outside, and gradually deviates to one end of the end of incoming cables far from cable termination, i.e., to being equipped with stress cone 4 The offset of side step type, can significantly more efficient change field distribution.
On cable 10, inside closely crimps 4 sets of the stress cone with cable 10, and outside is closely crimped with insulating sleeve 7, Improve cable root electric field strength, reduces stress and concentrate.The stress cone 4 includes insulated part 43 and current-carrying part 41, conduction Part 41 is for the semi-conductive layer press fit with cable 10, and current-carrying part 41 is electrically connected with earthing 6, and insulated part 43 is used In the main insulating layer press fit with cable 10, one end of the insulated part 43 is the tapered end cooperated with insulating sleeve 7 42, the lateral surface and the tapered close press fit of slot medial surface of 7 one end of insulating sleeve at tapered end 42, the current-carrying part 41 Tip inside in the tapered end 42, positioned at stress cone 4 close to one end of the tapered slot of insulating sleeve 7, the current-carrying part 41 include the conductive valve 44 extended from inside to outside, and conductive valve 44 extends to the inlet wire extreme direction far from cable termination.It is described to answer The insulated part 43 and current-carrying part 41 of power cone 4 can be made of elastic material.Certainly, as another implementation of stress cone Example, stress cone 4 can also be not provided with current-carrying part 41, as long as the lateral surface at the tapered end 42 of stress cone 4 and 7 one end of insulating sleeve The tapered close press fit of slot medial surface, the inside of stress cone 4 closely crimps with the main insulating layer of cable 10, and capacitance cone is pressed Effect be also able to achieve, but difficulty of construction and equalizing effect can differences.
Further, the cable termination is additionally provided with the elastic hold-down mechanism 3 for being in close contact stress cone 4 and insulating sleeve 7. Specifically as shown in Figure 1, the elastic hold-down mechanism 3 is arranged between upper flange 2 and insulating sleeve 7, including 31 He of spring The stress cone compressed part 32 cooperated with stress cone 4.Preferably, one end that stress cone 4 and stress cone compressed part 32 cooperate be it is tapered, Convenient for being fitted close with stress cone compressed part 32 by inclined-plane;Certainly, it may not be tapered, be also possible to circular flat Face.
The upper flange 2 seals one end of insulating sleeve 7, the seal closure 21 including being connect with insulating sleeve 7 and with electricity The cable of cable 10 leads the end cap 22 of core connection.Seal closure 21 is connect by screw with insulating sleeve 7, in seal closure 21 and insulation sleeve The sealing shroud of elasticity can also be set between cylinder 7.Cable of 22 sets of the end cap in cable 10 is led on core, and the other end extends to close Sealing cover 21 is outer to be connect with connecting terminal 1.
Further, the end cap 22 is fixedly connected by bracket 23 and bracket screw with insulating sleeve 7.The insulation The high pressure screen 5 of sleeve 7 is electrically connected by bracket screw and bracket 23 with end cap 22, leads core by the cable of end cap 22 and cable 10 Electrical connection.31 one end of spring of the elastic hold-down mechanism 3 is withstood on bracket 23, and the other end is pushed away by stress cone compressed part 32 Dynamic stress cone 4 is in close contact with insulating sleeve 7.
Installation of the mounting flange 9 for cable termination is fixed, and is commonly installed on utility poles or on electric power tower, It can certainly install on the ground or other places.Preferably, the earthing 6 is electrically connected with mounting flange 9, passes through peace Flange 9 is filled to be grounded.
The oversheath 8 is the full skirt of silicon rubber, and certain cable termination can also be using other types or other materials Oversheath.
The cable termination of the invention, the connection of starting point or end for high-tension cable.High-tension cable by it is interior to Generally including cable leads core, main insulating layer, semi-conductive layer (major insulation external shielding layer) outside;Armouring can be also equipped with outside semi-conductive layer Other protection structures such as layer, restrictive coating.When cable termination and cable being installed at the construction field (site), cable will be protruded into cable termination Partial armor or restrictive coating etc. are peelled off, and semi-conductive layer is exposed;It again will be between the insulated part 43 of stress cone 4 to end cap 22 The semi-conductive layer of corresponding part is wiped off, and main insulating layer part is exposed;It will peel off, reveal with the main insulating layer of 22 corresponding part of end cap again Cable leads core segment out.It inserts the cable into the insulating sleeve 7 of cable termination, by 4 sets of stress cone on cable, stress cone 4 Current-carrying part 41 is corresponding with the semi-conductive layer of cable and compresses, and the insulated part 43 of stress cone 4 is corresponding with the main insulating layer of cable And compress, then install elastic hold-down mechanism 3 simultaneously bracket 23 and the compression of end cap 22, it is sealed and is compressed by seal closure 21, then again Connect connecting terminal 1.
High pressure screen 5 is arranged on the outside the insulating sleeve 7 of the cable termination of the invention, and earthing 6 is arranged in inside, So that without filling dielectric between cable and the insulating sleeve 7 of cable termination, without vacuumizing, structure is simple, at This low and assembly is easy to maintain.And the setting of stress cone 4 is made in upper flange one end positioned at one end of the end close to cable The part that semi-conductive layer must be needed to wipe off greatly reduces, and reduces difficulty of construction and time.When cable termination installation needs to adjust When with replacement, the cable section for needing to cut out greatly reduces, and the length of cable is avoided to reserve inadequate problem.
It, cannot the above content is combining specific preferred embodiment to be further described to made by the invention Assert that the specific implementation of the invention is only limited to these instructions.For the ordinary skill of the invention technical field For personnel, without departing from the concept of the premise of the invention, a number of simple deductions or replacements can also be made, should all regard For the protection scope for belonging to the invention.

Claims (10)

1. a kind of cable termination, including capacitive insulating sleeve (7), the insulating sleeve (7) is equipped with for accommodating cable (10) cavity is equipped with stress cone (4) between insulating sleeve (7) and cable (10), it is characterised in that: the stress cone (4) It is located remotely from the other end of the end of incoming cables of cable termination, the insulating sleeve (7) includes multiple electricity being arranged alternately with insulating layer Rong Ping, wherein innermost capacitance plate be earthing (6), outermost capacitance plate be high pressure screen (5), the high pressure screen (5) with The cable of cable (10) leads core electrical connection.
2. cable termination according to claim 1, it is characterised in that: exist between insulating sleeve (7) and cable (10) Exempt from the gap of filling.
3. cable termination according to claim 1, it is characterised in that: be respectively equipped with installation at the both ends of insulating sleeve (7) Flange (9) and upper flange (2), cable (10) penetrate in insulating sleeve (7) from mounting flange (9) one end, stress cone (4) position One end where upper flange (2) close in cable termination is arranged with oversheath (8) outside insulating sleeve (7).
4. cable termination according to claim 1, it is characterised in that: multiple capacitance plates in the insulating sleeve (7) by It is interior to arrive outer layer-by-layer shortening, and gradually deviated to one end of the end of incoming cables far from cable termination.
5. cable termination according to claim 1, it is characterised in that: the stress cone (4) include insulated part (43) and Current-carrying part (41), one end of the insulated part (43) are the tapered end (42) cooperated with insulating sleeve (7), tapered end (42) the tapered close press fit of slot medial surface of lateral surface and insulating sleeve (7) one end, the current-carrying part (41) are located at The tip inside of the tapered end (42), and current-carrying part (41) is electrically connected with earthing (6).
6. cable termination according to claim 5, it is characterised in that: the current-carrying part (41) include from it is interior from it is outer and to The conductive valve (44) that inlet wire extreme direction far from cable termination extends.
7. cable termination according to claim 1, it is characterised in that: the cable termination be additionally provided with make stress cone (4) and The elastic hold-down mechanism (3) that insulating sleeve (7) is in close contact.
8. cable termination according to claim 3, it is characterised in that: the upper flange (2) includes connecting with insulating sleeve (7) The seal closure (21) that connects and the end cap (22) that core is connect is led with the cable of cable (10), the end cap (22) covers in cable (10) Cable is led on core, and the other end extends to seal closure (21) and connect outside with connecting terminal (1).
9. cable termination according to claim 8, it is characterised in that: the end cap (22) passes through bracket (23) and bracket Screw is fixedly connected with insulating sleeve (7);The high pressure screen (5) of the insulating sleeve (7) passes through bracket screw and bracket (23) It is electrically connected with end cap (22).
10. cable termination according to claim 9, it is characterised in that: the cable termination be additionally provided with make stress cone (4) and The elastic hold-down mechanism (3) that insulating sleeve (7) is in close contact;Elastic hold-down mechanism (3) setting is in upper flange (2) and absolutely Between edge sleeve (7), including spring (31) and the stress cone compressed part (32) cooperated with stress cone (4), spring (31) one end top On bracket (23), the other end pushes stress cone (4) and insulating sleeve (7) by stress cone compressed part (32);The ground connection Screen (6) is electrically connected with mounting flange (9).
CN201822109991.3U 2018-12-14 2018-12-14 Cable termination Withdrawn - After Issue CN209545119U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822109991.3U CN209545119U (en) 2018-12-14 2018-12-14 Cable termination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822109991.3U CN209545119U (en) 2018-12-14 2018-12-14 Cable termination

Publications (1)

Publication Number Publication Date
CN209545119U true CN209545119U (en) 2019-10-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822109991.3U Withdrawn - After Issue CN209545119U (en) 2018-12-14 2018-12-14 Cable termination

Country Status (1)

Country Link
CN (1) CN209545119U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111327013A (en) * 2018-12-14 2020-06-23 香港浩岳国际有限公司 Cable terminal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111327013A (en) * 2018-12-14 2020-06-23 香港浩岳国际有限公司 Cable terminal
CN111327013B (en) * 2018-12-14 2021-06-04 香港浩岳国际有限公司 Cable terminal

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AV01 Patent right actively abandoned
AV01 Patent right actively abandoned
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Granted publication date: 20191025

Effective date of abandoning: 20210604

AV01 Patent right actively abandoned

Granted publication date: 20191025

Effective date of abandoning: 20210604