CN103872636A - Insulation bunched joint and application thereof in high-voltage direct current terminal - Google Patents
Insulation bunched joint and application thereof in high-voltage direct current terminal Download PDFInfo
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- CN103872636A CN103872636A CN201410132373.4A CN201410132373A CN103872636A CN 103872636 A CN103872636 A CN 103872636A CN 201410132373 A CN201410132373 A CN 201410132373A CN 103872636 A CN103872636 A CN 103872636A
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- current terminal
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Abstract
The invention discloses an insulation bunched joint and application of the insulation bunched joint in a high-voltage direct current terminal. The high-voltage direct current terminal structurally comprises a conductor guide-out bar, a sealing ring, upper hardware, a casing pipe, insulation oil, a cable, a stress cone, lower hardware and a cable protection pipe. The high-voltage direct current terminal is characterized in that the bottom face of the lower hardware of the high-voltage direct current terminal is connected with the insulation bunched joint, the insulation bunched joint comprises a metal connecting pipe, an insulation pipe and a metal connector, the metal connector is arranged at one end of the insulation bunched joint, the metal connecting pipe is connected with the metal connector through the insulation pipe, the metal connecting pipe is of an outer thread structure, the metal connecting pipe, of the outer thread structure, of the insulation bunched joint is connected with the lower hardware of the high-voltage direct current terminal, a plane rubber ring or a T-type rubber ring is adopted for sealing after the metal connecting pipe and the lower hardware are connected, the insulation bunched joint is connected with an energy storage container through a valve and an oil pipe, and the metal connector of the insulation bunched joint and the valve are sealed through the plane rubber ring.
Description
Technical field
The present invention relates to the parts in a kind of high voltage direct current terminal, particularly disclose a kind of bundle that insulate and connect and application in high voltage direct current terminal, for connecting high voltage direct current terminal bottom gold utensil and energy-storing container oil pipe line.
Background technology
China's secondary energy sources aboundresources, is characterized in dispersiveness, small-sized property, away from load center and be rich in harmonic wave, adopts conventional power transmission mode both uneconomical, can pollute to electrical network again.Along with the appearance of plastic insulation direct current cables, embody the plurality of advantages such as volume is little, lightweight, reliability is high, non-maintaining, bear the electric power transfer of such secondary energy sources by progressively substituting paper oil insulation direct current cables.At present, the flexible DC power transmission of the direct current transportation over strait of long distance high-voltage and short-distance and medium-distance mostly selects to adopt plastic insulation direct current cables.Along with domestic, to the increasing of high voltage direct current transmission demand, existing multinomial direct current demonstration project is faced with exploitation and the selection of plastic insulation direct current cables and annex in planning or carrying out.
Summary of the invention
The object of the invention is provides terminal for the plastic insulated cable of high voltage direct current transmission, to be connected with power transmission and transforming equipment, designing a kind of bundle that insulate connects and application in high voltage direct current terminal, insulation bundle of the present invention connects for the connecting portion in the middle of high voltage direct current terminal bottom gold utensil and energy storage device, prevents from causing because of Leakage Current the generation of electrical fire and electric equipment damage accident.
The present invention is achieved in that a kind of insulation bundle connects, insulation bundle described in it is characterized in that connects and comprises metal adapter, insulated tube and metal joint, one end that described metal joint connects in insulation bundle, it is not to be directly connected that metal joint is taken over metal, metal is taken over and is connected by insulated tube with metal joint, and metal is taken over as external thread structure.
A kind of described insulation bundle is connected on the application of high voltage direct current terminal, the structure of described high voltage direct current terminal comprises conductor eduction rod, sealing ring, top gold utensil, sleeve pipe, insulating oil, cable, stress cone, bottom gold utensil and cable protection pipe, it is characterized in that: the bottom surface of described high voltage direct current terminal bottom gold utensil connects insulation bundle and connects, the metal of the external thread structure that described insulation bundle connects is taken over and is connected with the bottom gold utensil of high voltage direct current terminal, the sealing that described metal is taken over after being connected with bottom gold utensil adopts the sealing of flat rubber circle or T-shaped seal with elastometic washer, these two kinds of structures all can reach sealing effectiveness, insulation implementation method can determine according to the actual processing conditions of terminal bottom gold utensil.Insulation bundle connects through valve, oil-way pipe and connects energy-storing container, the metal joint that insulation bundle connects and the sealing of valve adopt the sealing of flat rubber circle, and insulation bundle is connected into the adjusting passage of the air gap producing while expanding with heat and contract with cold for the insulating oil in high voltage direct current terminal cavity and between energy-storing container.Described energy-storing container is stainless steel oil storage tank, and internal pressure is 0.05～0.4MPa, and object is to guarantee that terminal inner, without air gap, for regulating expanding with heat and contract with cold of terminal inner insulating oil, avoids inside to occur air gap, thereby guarantees the reliability of long-time running of terminal.Described sleeve pipe is porcelain bushing or composite bushing, and length is 1.3m～5m.Described stress cone is prefabricated rubber stress cone, and its insulating material can suppress the generation of the space charge of interface, inside effectively.The internal diameter of cable protection pipe is cable metal sheath external diameter and twice leadwork thickness sum, object be the time of lead sealing is controlled to minimum, to guarantee the quality of cable.
Compared with prior art, the present invention's bundle that insulate connects and comprises the high voltage direct current terminal that this insulation bundle connects and has following remarkable result:
(1) connecting portion in the middle of this terminal bottom gold utensil and energy-storing container adopts insulation bundle to connect, and effectively prevents from causing because of Leakage Current the technical measures of electrical fire and electric equipment damage accident;
(2) terminal bottom, with energy-storing container, for regulating expanding with heat and contract with cold of terminal inner insulating oil, avoids inside to occur air gap, thereby guarantees the reliability of the long-time running of terminal;
(3) simple in structure, produce easily.
Accompanying drawing explanation
Fig. 1 is the present invention's structural representation of connecing of bundle that insulate.
Fig. 2 is that the present invention's bundle that insulate scoops out structural representation for high voltage direct current cable terminal.
In figure: 1, conductor eduction rod; 2, sealing ring; 3, top gold utensil; 4, sleeve pipe; 5, insulating oil; 6, stress cone; 7, bottom gold utensil; 8, cable protection pipe; 9, insulation bundle connects; 10, valve; 11, oil pipe line; 12, energy-storing container; 91, metal is taken over; 92, insulated tube; 93, metal joint.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
With reference to the accompanying drawings 1, the present invention is insulated to restraint to connect and is comprised metal adapter 91, insulated tube 92 and metal joint 93, one end that metal joint 93 connects in insulation bundle, it is not to be directly connected that metal joint 93 takes over 91 with metal, metal is taken over 91 and is connected by one section of insulated tube 92 with metal joint 93, and it is external thread structure that metal takes over 91.
With reference to the accompanying drawings 2; the present invention's bundle that insulate is connected on application in high voltage direct current cable terminal, and high voltage direct current cable terminal comprises that conductor eduction rod 1, sealing ring 2, top gold utensil 3, sleeve pipe 4, insulating oil 5, stress cone 6, bottom gold utensil 7, cable protection pipe 8, insulation bundle connect 9, valve 10, oil pipe line 11 and energy-storing container 12.
On the cable of high voltage direct current cable terminal, fill successively cable protection pipe 8, bottom gold utensil 7, sealing ring 2, stress cone 6, sleeve pipe 4, insulating oil 5, sealing ring 2, top gold utensil 3, finally successively installing insulating bundle connect 9, valve 10, oil pipe line 11, energy-storing container 12.Wherein, top gold utensil, bottom gold utensil and sleeve pipe adopt rubber seal 2 to seal, and are bolted.Bottom gold utensil 7 is connected with cable protection pipe 8.Bottom gold utensil 7 is provided with a through hole, is restrainted and is connect 9 terminal inner cavity is communicated with energy-storing container 12 by insulation.
Insulation bundle connect 9 with the two kinds of forms that are sealed with of high voltage direct current cable terminal bottom gold utensil 7: one is to adopt the sealing of flat rubber circle, and another kind is to adopt T-shaped seal with elastometic washer.These two kinds of structures all can reach sealing effectiveness, and insulation implementation method can determine according to the actual processing conditions of terminal bottom gold utensil.
The present invention contains high voltage direct current terminal that insulation bundle the connects end for HVDC (High Voltage Direct Current) transmission line, plays sealed direct-current cable, improves the electric field of cable end piece by prefabricated rubber stress cone simultaneously.
The above embodiment of the present invention is only used to that the present invention will be described in detail; it is not limiting the scope of the present invention; embodiments of the present invention are not limited to this; according to foregoing of the present invention; according to ordinary skill knowledge and the customary means of this area; do not departing under basic fundamental thought prerequisite of the present invention; modification, replacement or the change of other various ways that said structure of the present invention is made; within all dropping on protection scope of the present invention, protection range of the present invention is limited by claims of the present invention.
Claims (3)
1. an insulation bundle connects, insulation bundle described in it is characterized in that connects and comprises metal adapter (91), insulated tube (92) and metal joint (93), one end that described metal joint connects in insulation bundle, metal is taken over and is connected by insulated tube with metal joint, and metal is taken over as external thread structure.
2. an insulation bundle claimed in claim 1 is connected on the application of high voltage direct current terminal, the structure of described high voltage direct current terminal comprises conductor eduction rod, sealing ring, top gold utensil, sleeve pipe, insulating oil, cable, stress cone, bottom gold utensil and cable protection pipe, it is characterized in that: the bottom surface of described high voltage direct current terminal bottom gold utensil connects insulation bundle and connects, the metal of the external thread structure that described insulation bundle connects is taken over and is connected with the bottom gold utensil of high voltage direct current terminal, the sealing that described metal is taken over after being connected with bottom gold utensil adopts the sealing of flat rubber circle or T-shaped seal with elastometic washer, described insulation bundle connects through valve, oil-way pipe connects energy-storing container, the metal joint that insulation bundle connects and the sealing of valve adopt the sealing of flat rubber circle, insulation bundle is connected into the adjusting passage of the air gap producing while expanding with heat and contract with cold for the insulating oil in high voltage direct current terminal cavity and between energy-storing container.
3. be connected on the application of high voltage direct current terminal according to the insulation bundle described in claim 2, it is characterized in that: described energy-storing container is stainless steel oil storage tank, internal pressure is 0.05～0.4MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410132373.4A CN103872636A (en) | 2014-04-03 | 2014-04-03 | Insulation bunched joint and application thereof in high-voltage direct current terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410132373.4A CN103872636A (en) | 2014-04-03 | 2014-04-03 | Insulation bunched joint and application thereof in high-voltage direct current terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103872636A true CN103872636A (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410132373.4A Pending CN103872636A (en) | 2014-04-03 | 2014-04-03 | Insulation bunched joint and application thereof in high-voltage direct current terminal |
Country Status (1)
| Country | Link |
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| CN (1) | CN103872636A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1301993A (en) * | 1970-03-26 | 1973-01-04 | ||
| JPS6419909A (en) * | 1987-07-11 | 1989-01-24 | Hitachi Cable | Terminal connection for seal cable |
| CN2644838Y (en) * | 2003-10-14 | 2004-09-29 | 华永康 | Combustion gas pipe network lightning protection joint |
| CN102906953A (en) * | 2010-05-21 | 2013-01-30 | Abb研究有限公司 | A high voltage direct current cable termination apparatus |
| CN103474944A (en) * | 2013-08-19 | 2013-12-25 | 广东电网公司电力科学研究院 | Great creep distance direct current cable outdoor terminal |
-
2014
- 2014-04-03 CN CN201410132373.4A patent/CN103872636A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1301993A (en) * | 1970-03-26 | 1973-01-04 | ||
| JPS6419909A (en) * | 1987-07-11 | 1989-01-24 | Hitachi Cable | Terminal connection for seal cable |
| CN2644838Y (en) * | 2003-10-14 | 2004-09-29 | 华永康 | Combustion gas pipe network lightning protection joint |
| CN102906953A (en) * | 2010-05-21 | 2013-01-30 | Abb研究有限公司 | A high voltage direct current cable termination apparatus |
| CN103474944A (en) * | 2013-08-19 | 2013-12-25 | 广东电网公司电力科学研究院 | Great creep distance direct current cable outdoor terminal |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140618 |