CN103036149A - Non-power-outage operated bypass connection device used between two European-style ring main units - Google Patents
Non-power-outage operated bypass connection device used between two European-style ring main units Download PDFInfo
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- CN103036149A CN103036149A CN2012105857801A CN201210585780A CN103036149A CN 103036149 A CN103036149 A CN 103036149A CN 2012105857801 A CN2012105857801 A CN 2012105857801A CN 201210585780 A CN201210585780 A CN 201210585780A CN 103036149 A CN103036149 A CN 103036149A
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000010410 layer Substances 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention discloses a non-power-outage operated bypass connection device used between two European-style ring main units. The non-power-outage operated bypass connection device used between the two European-style ring main units comprises two lines of flexible cables connection devices led out from the two European style ring main units and a by-pass switch arranged between the two lines of flexible cable connection devices. Each of the flexible cables connection devices comprises a cable terminal, a flexible cable and a plug type quick connector. The cable terminal is composed of a detachable T casing pipe and a cable wiring terminal. A cable with the cable wiring terminal is led in from a line inlet arranged on each of the European-style ring main units and is inserted from a lower end mouth of a vertical pipe part of the T casing pipe, thus connection between the cable terminal and a cable sleeve is greatly benefited. According to the non-power-outage operated bypass connection device used between the two European-style ring main units, the touch down point is changed from the cable terminal portion to the by-pass switch portion by using the characteristic of shielded lines all-line connecting of flexible cables, and thus ground lead erecting is not needed. The flexible cables connection devices are simple in structure and convenient to use, reduce operation scope, facilitate not power-outage examine and repair operation and improve line power supply reliability.
Description
Technical Field
The invention relates to a bypass connecting device for uninterrupted operation between two European-style ring main units.
Background
When the underground cable between two European style ring main units is abnormally required to be maintained, the bypass connecting device is laid on the ground and safety protection measures are taken, and then the bypass connecting device replaces the underground cable to supply power to the ring main unit, so that the aim of maintenance without power outage (less power outage) is fulfilled.
The bypass connecting device mainly comprises a bypass switch, a cable terminal and a flexible cable, wherein the cable terminal is arranged at one end of the bypass switch and connected with a cable sleeve of the European-style ring main unit, and the other end of the flexible cable is connected with the bypass switch.
At present, a cable sleeve in the European-style ring main unit mostly adopts a fully-insulated, fully-closed and fully-sealed cable terminal, and the cable terminal and a cable connected with the cable terminal cannot be separated.
When laying the operation of bypass connecting device, because the space in european style looped netowrk cabinet entrance hole is less, and the volume that seals cable termination as an organic whole with bypass connecting device is great again, can't get into european style looped netowrk cabinet through the entrance hole smoothly, causes the degree of difficulty that bypass connecting device and european style looped netowrk cabinet are connected to increase, often enlarges the operation scope because of can't implement effectual looped netowrk cabinet and bypass connecting device's being connected, brings the inconvenience for the maintenance operation of not cutting off the power supply.
Meanwhile, the grounding of the bypass connecting device is mainly realized through a grounding wire which is arranged on a metal shielding shell of the cable terminal and is connected with the ground, but the bypass connecting device mainly deals with fault rush repair and defect treatment and needs safe, rapid and convenient construction, and the grounding wire needs to be additionally erected when the bypass connecting device is laid in such a grounding mode, so that the construction time and the difficulty are increased, and inconvenience is brought to maintenance operation without power outage.
Disclosure of Invention
The invention aims to solve the problems and provide a bypass connecting device which is simple in structure and convenient to use and is used for uninterrupted operation between two European-style ring main units.
The purpose of the invention is realized as follows:
the invention relates to a bypass connecting device for uninterrupted operation between two European-style ring main units, which is arranged between the two European-style ring main units and comprises two flexible cable connecting devices and a bypass switch with a grounded shell, wherein one end of each flexible cable connecting device is connected to the corresponding European-style ring main unit, the other end of each flexible cable connecting device is connected to the bypass switch, each flexible cable connecting device comprises a cable terminal, a flexible cable and a plug-in quick connector, the cable terminals and the plug-in quick connectors are respectively arranged at two ends of the flexible cable, the flexible cable comprises a sheath, a tinned copper wire shielding layer, an inner protective layer and a tinned copper conductor from outside to inside, the cable terminals are plugged in cable sleeves of the European-style ring main units, the cable sleeves comprise a base and bolts arranged at the front end of the base, and the plug-in quick connectors are plugged in and out cable sleeves of the bypass switch, wherein,
the cable terminal comprises a T-shaped sleeve, a cable wiring terminal and an insulating plug head, wherein the cable wiring terminal and the insulating plug head are arranged at one end of the flexible cable, the T-shaped sleeve comprises a transverse pipe part and a vertical pipe part which are communicated with each other, a base of the cable sleeve is inserted into the left side of the transverse pipe part, the bolt is horizontally arranged in the transverse pipe part, the cable wiring terminal is inserted from a lower port of the vertical pipe part and is sleeved on the bolt, the insulating plug head is inserted into the right side of the transverse pipe part, and the insulating plug head is in threaded connection with the front end of the bolt;
plug-in quick-operation joint is located including gluing core, cover metal casing and the central needle in the core outside glues, glue the core and include the upper and lower cavity that communicates each other through the through-hole, just the internal diameter of through-hole all is less than the internal diameter of upper and lower cavity, the central needle includes contact pin portion and wiring portion, just the external diameter of wiring portion is greater than the internal diameter of through-hole, contact pin portion follows the lower port of through-hole inserts and places in the epicoele is internal, wiring portion block in the lower port department of through-hole places in the cavity of resorption is internal, the tinned copper conductor of the flexible cable other end pegs graft in wiring portion, just the tinned copper wire shielding layer clamp of flexible cable is located between gluey core and the metal casing.
The cable terminal comprises the separable T-shaped sleeve and the cable connecting terminal, and during construction, a cable with the cable connecting terminal is firstly led in from the wire inlet hole of the European-style ring main unit and then is inserted from the lower port of the vertical pipe part of the T-shaped sleeve, so that the connection between the cable terminal and the cable sleeve of the European-style ring main unit is greatly facilitated.
Meanwhile, the grounding point is led to the bypass switch from the cable terminal by utilizing the characteristic of full-line communication of the flexible cable shielding line, and the bypass switch is grounded, so that the grounding line does not need to be additionally erected, the construction and the uninterrupted maintenance operation of the bypass connecting device are facilitated, and meanwhile, the grounding device is also suitable for the condition of small space of the ring main unit, and the power supply reliability of the line is greatly improved.
Therefore, the bypass connecting device is simple in structure and convenient to use, reduces the operation range, facilitates maintenance operation without power outage, and improves the power supply reliability of the line.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of the flexible cable connection device according to the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1, the bypass connection device for uninterrupted operation between two european ring main units according to the present invention is shown, and the bypass connection device is disposed between two european ring main units 1, and includes two flexible cable connection devices 10 and a bypass switch 3 with a grounded outer shell, wherein one end of each of the two flexible cable connection devices 10 is connected to the corresponding european ring main unit 1, and the other end is connected to the bypass switch 3.
Referring to fig. 2, the flexible cable connection device is shown, the flexible cable connection device 10 includes a cable terminal, a flexible cable 9 and a plug-in type quick connector 2, the flexible cable 9 includes a sheath 94, a tinned copper wire shielding layer 93, an inner protection layer 92 and a tinned copper conductor 91 from outside to inside, the cable terminal is plugged in a cable sleeve of the european style ring main unit 1, the cable sleeve includes a base 81 and a bolt 82 arranged at the front end of the base 81, and the plug-in type quick connector 2 is plugged in an in-out cable sleeve 31 of the bypass switch 3;
the cable terminal comprises a T-shaped sleeve 5, a cable wiring terminal 71 and an insulation plugging head 6, wherein the cable wiring terminal 71 and the insulation plugging head 6 are arranged at one end of a flexible cable 9, the T-shaped sleeve 5 comprises a transverse pipe part 51 and a vertical pipe part 52 which are mutually communicated, and an inner cavity at the intersection of the transverse pipe part 51 and the vertical pipe part 52 is a square hole 53; the base 81 of the cable bushing is inserted to the left of the transverse tube 51, and the bolt 82 is horizontally placed in the transverse tube 51; the cable connecting terminal 71 is inserted from the lower port of the vertical pipe part 52 and is arranged in the square hole 53, and the cable connecting terminal 71 is sleeved on the bolt 82; the insulation blocking head 6 is inserted at the right side of the transverse pipe part 51, an internal threaded hole 61 matched with the external thread of the bolt 82 is formed in the top surface of the insulation blocking head 6, and the front end of the bolt 82 is screwed in the internal threaded hole 61;
the plug-in type quick connector 2 comprises a rubber core 21, a metal shell 22 sleeved outside the rubber core 21 and a center pin 4, wherein the rubber core 21 comprises an upper cavity 211 and a lower cavity 212 which are communicated with each other through a through hole 213, the inner diameter of the through hole 213 is respectively smaller than the inner diameters of the upper cavity 211 and the lower cavity 212, the center pin 4 comprises a pin part 41 and a wiring part 42, the outer diameter of the wiring part 42 is larger than the inner diameter of the through hole 213, the pin part 41 is inserted into the upper cavity 211 from the lower port of the through hole 213, the wiring part 42 is clamped at the lower port of the through hole 213 and is arranged in the lower cavity 212, a tin-plated copper conductor 91 of a flexible cable 9 is inserted into the wiring part 42, a tin-plated copper wire shielding layer 93 of the flexible cable 9 is clamped between the rubber core 21 and the metal shell 22, an in-out bushing 31 of a bypass switch 3 comprises an inner core 312 and a metal sheath 311 arranged outside the inner core 312, the metal sheath 311 is embedded between the rubber core 21 and the metal shell 22, the metal sheath 311 is connected with the shell of the bypass switch 3, and the shell of the bypass switch 3 is grounded.
During construction, the flexible cable 9 with the cable connecting terminal 71 is firstly led in from the wire inlet hole of the european type ring main unit 1, then the flexible cable is inserted from the lower port of the vertical pipe part 52 of the T-shaped casing 5, so that the cable connecting terminal 71 is positioned in the square hole 53, the left port of the transverse pipe part 51 of the T-shaped casing 5 is inserted on the base 81 of the cable casing, so that the bolt 82 at the front end of the base 81 is sleeved on the cable connecting terminal 71 and positioned in the transverse pipe part 51, and finally the insulation sealing head 6 is inserted on the right port of the transverse pipe part 51, and the front end of the bolt 82 is screwed in the internal threaded hole 61, thereby completing the connection between the cable terminal and the cable casing of the european type ring main unit 3.
Meanwhile, because the tinned copper wire shielding wire 93 of the flexible cable 9 is communicated in a full-line manner, the grounding point can be led to the shell of the bypass switch 3 from the cable terminal end of the flexible cable 9 through the metal shell 22 of the plug-in quick connector 2 and the metal sheath 311 of the wire inlet and outlet sleeve 31, and the shell of the bypass switch 3 is grounded, so that the grounding wire does not need to be additionally erected, and the bypass connecting device is convenient to connect, construct and maintain without power failure.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (1)
1. A bypass connecting device for uninterrupted operation between two European-style ring main units is arranged between the two European-style ring main units and comprises two flexible cable connecting devices and a bypass switch with a grounded shell, one end of each flexible cable connecting device is connected to the corresponding European-style ring main unit, the other end of each flexible cable connecting device is connected to the bypass switch, each flexible cable connecting device comprises a cable terminal, a flexible cable and a plug-in quick connector, the cable terminals and the plug-in quick connectors are respectively arranged at two ends of the flexible cable, the flexible cable comprises a sheath, a tinned copper wire shielding layer, an inner protective layer and a tinned copper conductor from outside to inside, the cable terminals are plugged on cable sleeves of the European-style ring main units, each cable sleeve comprises a base and a bolt arranged at the front end of the base, the plug-in quick connectors are plugged on inlet and outlet sleeves of the bypass switch, it is characterized in that the preparation method is characterized in that,
the cable terminal comprises a T-shaped sleeve, a cable wiring terminal and an insulating plug head, wherein the cable wiring terminal and the insulating plug head are arranged at one end of the flexible cable, the T-shaped sleeve comprises a transverse pipe part and a vertical pipe part which are communicated with each other, a base of the cable sleeve is inserted into the left side of the transverse pipe part, the bolt is horizontally arranged in the transverse pipe part, the cable wiring terminal is inserted from a lower port of the vertical pipe part and is sleeved on the bolt, the insulating plug head is inserted into the right side of the transverse pipe part, and the insulating plug head is in threaded connection with the front end of the bolt;
plug-in quick-operation joint is located including gluing core, cover metal casing and the central needle in the core outside glues, glue the core and include the upper and lower cavity that communicates each other through the through-hole, just the internal diameter of through-hole all is less than the internal diameter of upper and lower cavity, the central needle includes contact pin portion and wiring portion, just the external diameter of wiring portion is greater than the internal diameter of through-hole, contact pin portion follows the lower port of through-hole inserts and places in the epicoele is internal, wiring portion block in the lower port department of through-hole places in the cavity of resorption is internal, the tinned copper conductor of the flexible cable other end pegs graft in wiring portion, just the tinned copper wire shielding layer clamp of flexible cable is located between gluey core and the metal casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105857801A CN103036149A (en) | 2012-12-28 | 2012-12-28 | Non-power-outage operated bypass connection device used between two European-style ring main units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105857801A CN103036149A (en) | 2012-12-28 | 2012-12-28 | Non-power-outage operated bypass connection device used between two European-style ring main units |
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| Publication Number | Publication Date |
|---|---|
| CN103036149A true CN103036149A (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105857801A Pending CN103036149A (en) | 2012-12-28 | 2012-12-28 | Non-power-outage operated bypass connection device used between two European-style ring main units |
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| Country | Link |
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| CN (1) | CN103036149A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140791A (en) * | 2015-09-08 | 2015-12-09 | 云南电网有限责任公司昭通供电局 | Connection type ring main unit structure |
| CN105470844A (en) * | 2016-01-04 | 2016-04-06 | 徐州海伦哲专用车辆股份有限公司 | 20-kV medium-voltage emergency power generation vehicle |
| CN108736466A (en) * | 2018-04-03 | 2018-11-02 | 国网浙江省电力有限公司杭州供电公司 | A kind of method of distribution temporary subsection |
| CN114156674A (en) * | 2021-11-01 | 2022-03-08 | 广西电网有限责任公司南宁供电局 | Switching station bypass system primary and secondary head of working a telephone switchboard fast |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7144272B1 (en) * | 2005-11-14 | 2006-12-05 | Corning Gilbert Inc. | Coaxial cable connector with threaded outer body |
| CN201450191U (en) * | 2009-05-27 | 2010-05-05 | 上海市电力公司 | Straight-through plugging and unplugging joint of cable |
| CN202134721U (en) * | 2011-05-23 | 2012-02-01 | 安迪普科技(深圳)有限公司 | T type connecting device for flexible cable |
-
2012
- 2012-12-28 CN CN2012105857801A patent/CN103036149A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7144272B1 (en) * | 2005-11-14 | 2006-12-05 | Corning Gilbert Inc. | Coaxial cable connector with threaded outer body |
| CN201450191U (en) * | 2009-05-27 | 2010-05-05 | 上海市电力公司 | Straight-through plugging and unplugging joint of cable |
| CN202134721U (en) * | 2011-05-23 | 2012-02-01 | 安迪普科技(深圳)有限公司 | T type connecting device for flexible cable |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140791A (en) * | 2015-09-08 | 2015-12-09 | 云南电网有限责任公司昭通供电局 | Connection type ring main unit structure |
| CN105140791B (en) * | 2015-09-08 | 2018-03-16 | 云南电网有限责任公司昭通供电局 | A kind of overlap-connected looped network cabinet |
| CN105470844A (en) * | 2016-01-04 | 2016-04-06 | 徐州海伦哲专用车辆股份有限公司 | 20-kV medium-voltage emergency power generation vehicle |
| CN108736466A (en) * | 2018-04-03 | 2018-11-02 | 国网浙江省电力有限公司杭州供电公司 | A kind of method of distribution temporary subsection |
| CN108736466B (en) * | 2018-04-03 | 2020-10-27 | 国网浙江省电力有限公司杭州供电公司 | Method for temporarily segmenting distribution network |
| CN114156674A (en) * | 2021-11-01 | 2022-03-08 | 广西电网有限责任公司南宁供电局 | Switching station bypass system primary and secondary head of working a telephone switchboard fast |
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Application publication date: 20130410 |