CN107123909B - Fire lapping device, fire lapping tool and method for high-voltage cable line and switch cabinet - Google Patents
Fire lapping device, fire lapping tool and method for high-voltage cable line and switch cabinet Download PDFInfo
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- CN107123909B CN107123909B CN201710456707.7A CN201710456707A CN107123909B CN 107123909 B CN107123909 B CN 107123909B CN 201710456707 A CN201710456707 A CN 201710456707A CN 107123909 B CN107123909 B CN 107123909B
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- plug
- insulating
- head
- seat
- plugging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/20—Coupling parts carrying sockets, clips or analogous contacts and secured only to wire or cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
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Abstract
The invention discloses a fire lapping device, a fire lapping tool and a fire lapping method for a high-voltage cable line and a switch cabinet, wherein the fire lapping device comprises a plug head and a plug seat which are matched with each other, the plug head and the plug seat are all integral parts of an insulating layer and a conductor, the plug seat at least comprises a plug end and a press end, the plug head comprises a plug end and a press end, the press ends of the plug seat and the plug head are respectively pressed and connected with the cable into a whole, the plug ends of the plug head and the plug seat are connected and fastened through a transverse external insulating fastener after the conductors of the plug head and the plug seat are longitudinally plugged, the plug seat and the plug head are connected and separated through installing and pulling out the external insulating fastener, the power failure maintenance of the high-voltage cable line or equipment on the line is safely and conveniently realized without influencing the power supply of the line, and the power supply reliability of the high-voltage cable line is improved. The fire-setting tool is used for assembling and disassembling the external insulation fastener. The fire lapping device can be used for lapping high-voltage cable lines and can also be used for high-voltage complete switch cabinets.
Description
Technical Field
The invention relates to a live connection device for a power transmission line, in particular to a high-voltage cable line and switch cabinet fire lapping device and an operation tool and method thereof.
Background
More and more cable lines are needed, and in the operation of the lines, when equipment connected with the cables needs to be overhauled due to power failure, the cable lines can be overhauled due to power failure. At present, no device capable of carrying out live fire lapping is available, so that equipment is separated from a running line or lapped, and the power supply reliability of a cable line is reduced.
The high-voltage complete switch cabinet also has the problems that all the switch cabinets at present share one group of buses, and any one switch cabinet needs to be powered off when power failure maintenance is needed, so that other switch cabinets cannot be powered on.
In order to solve the above problems, the present inventor has developed an assembly formed by a wall bushing, an intermediate joint connected to the wall bushing, and a cable connection terminal, which are independent from each other and do not affect a shunt cable received by a user, and the assembly can be operated in a live manner during connection, thereby improving power supply reliability and power supply efficiency, as detailed in ZL2015204578896. However, in practical use, the technical solution of the patent still has some defects, such as the phenomenon that two sides cannot be tightened simultaneously when the threads are butted, and a large contact resistance is generated as long as one side is loosened, which causes heating and even burning of the joint. In addition, the threads on the two sides are not provided with tightening and reinforcing measures, the outside of the joint is easy to loosen under the action of external force, and once the outside of the joint is loosened, larger contact resistance can be generated, so that the joint is heated and even burnt out.
Disclosure of Invention
The invention mainly aims to provide a device which can realize live overhaul operation of equipment on a high-voltage cable line and a high-voltage cable line, and improve the power supply reliability of the high-voltage cable line.
The invention provides a fire lapping device for a high-voltage cable line and a switch cabinet, which comprises a plug head and a plug seat which are matched with each other, wherein the plug head and the plug seat are both integral parts of an insulating layer and a conductor, the plug seat at least comprises a plug end and a crimping end, the plug head comprises a plug end and a crimping end, the crimping ends of the plug seat and the plug head are respectively crimped with the cable into a whole, the plug end of the plug head and the plug end of the plug seat are connected and fastened through a transverse external insulating fastener after the conductors of the plug head and the plug seat are longitudinally plugged, and the plug seat and the plug head are connected and separated through installing and pulling out the external insulating fastener.
The crimping ends of the plug seat and the plug head conductor stretch out of the end face of the crimping end insulating layer, the inserting end is located in the end face of the inserting end insulating layer, and the inserting end of the conductor is provided with notches along the length direction of the conductor.
The inner wall of the insulating layer of the plug seat insertion end is provided with an axial annular groove from the end face to the inside, and the inner end face of the axial annular groove exceeds the bottom face of the notch on the plug seat insertion end conductor.
The plug head is inserted into the axial annular groove of the plug seat through the plug end, and the conductors of the plug head and the plug end of the plug seat are mutually inserted into the notches of the other side.
The plug seat is characterized in that a round hole perpendicular to the length direction of the plug seat is formed in the plug end of the plug seat, the round hole is formed from one side of an insulating layer of the plug seat to an entity penetrating through a groove of the plug end of the conductor, a threaded hole is formed in the entity corresponding to the round hole in the groove of the plug end of the plug head conductor, the insulating layer of the plug end of the plug head is provided with a round hole corresponding to the threaded hole, the plug seat and the plug head are fastened through an external insulating bolt penetrating through the round hole and the threaded hole, the external insulating bolt comprises a metal thread section at the lower part and an insulating head at the upper end of the metal thread section, and the length of the metal thread section is larger than the thickness of the plug seat conductor.
The insulating layer of the plug seat is provided with a boss corresponding to the round hole on the plug seat, and the round hole penetrates through the boss.
The end of the insulating head is positioned outside the end face of the boss, the outer wall of the end is provided with threads, and the center of the end is provided with an axial threaded hole.
The cross sections of the plug seat and the plug head conductor are circular or rectangular; the compression joint ends of the plug seat and the plug head are respectively provided with an insulating sealing cylinder for insulating and sealing the compression joint.
The invention also provides a fire lapping operation tool which is used for assembling and disassembling the external insulation bolt and comprises an insulation sleeve, an insulation sleeve wrench and an insulation rod, wherein the insulation sleeve wrench is rotatably arranged in the insulation sleeve, and the insulation rod is rotatably arranged in an axial center hole of the insulation sleeve wrench; the inner end of the insulating socket wrench is provided with an axial groove from the end face to the inside, the axial groove is used for being inserted with the end head of the external insulating bolt, the inner end of the insulating rod is a thread head matched with an axial threaded hole of the end head of the external insulating bolt, the thread head is positioned in the axial groove of the insulating socket wrench, and the outer end of the insulating rod is positioned outside the insulating socket wrench; the inner end of the insulating sleeve is in threaded connection with the outer wall of the end socket of the outer insulating bolt.
The invention also provides an application method of the fire-working operation tool, which comprises the following steps:
(1) Inserting the plugging end of the plugging head into the plugging end of the plugging seat to enable the plugging end conductors of the plugging head and the plugging end conductors of the plugging seat to be respectively inserted into the notches of the opposite sides;
(2) Connecting the end of the outer insulating bolt and the insulating sleeve into a whole;
(3) Inserting an insulating sleeve spanner into an insulating sleeve, and inserting an insulating rod into an axial center hole of the insulating sleeve;
(4) Inserting an external insulation bolt into the mounting position of the plugging seat;
(5) Rotating the insulating socket wrench to enable the axial groove at the inner end of the insulating socket wrench to be axially inserted into the end socket of the outer insulating bolt;
(6) And rotating the insulating rod to enable the screw thread head at the inner end of the insulating rod to be screwed into the axial screw hole at the end head of the outer insulating bolt, and continuing to rotate the insulating rod to push the outer insulating bolt to move forward to fasten the plugging seat and the plugging head into a whole.
When the high-voltage cable line fire-lapping connector is used for lapping high-voltage cable lines, the plug seat is integrally installed with a cable end of a main line in a pressing mode through the pressing end of the plug seat, the pressing end of the plug head is pressed with the cable end of the main line or the cable end of a shunt line, and the plug seat and the plug end of the plug head are transversely fixed through longitudinal insertion between conductors and an external insulation fastener to achieve the lapping. Because plug seat and plug head are the whole piece of inner conductor and external insulation layer, the end of pegging graft has the explosion chamber moreover, discharges and can not injure the people in the explosion chamber when carrying out electrified connection, when taking fire and breaking away from the operation, only need through taking fire operation tool to operate can to external insulating fastener. When the high-voltage switch cabinet plugging device is used for a high-voltage complete switch cabinet, one set of plugging seat and plugging head are connected between each high-voltage switch cabinet and a bus, the plugging heads are connected with branch cables of the high-voltage switch cabinets, the plugging seats are connected with the bus, any one high-voltage switch cabinet can be withdrawn from the bus for overhauling under the electrified condition, and the normal operation of other high-voltage switch cabinets cannot be influenced. According to the invention, through live-line plugging or separation operation of the plugging seat and the plugging head, power-off maintenance of a high-voltage cable line or equipment on the line is safely and conveniently realized without influencing the power supply of the line, and the power supply reliability of the high-voltage cable line is improved.
Drawings
Fig. 1 is an enlarged schematic view of a use state of the first embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of the plug end of the plug receptacle of fig. 1.
Fig. 3 is a schematic cross-sectional view of the plugging end of the plug in fig. 1.
Fig. 4 is a schematic cross-sectional view of the socket and the plug head in a sparking state.
Fig. 5 is a schematic view of a use state of the second embodiment of the present invention.
Fig. 6 is a schematic view of a third embodiment of the present invention in a use state.
Fig. 7 is an operation view illustrating the installation of the outer insulating bolt according to the present invention.
Sequence numbers in the figure: the plug comprises a plug seat, a plug head, a plug seat insulating layer, a plug seat conductor, an axial annular groove, a round hole, a boss, a plug head insulating layer, a plug head conductor, a threaded hole, a sealing cylinder, an external insulating fastener, a metal thread section 41, an insulating head 42, an axial threaded hole 43, a trunk cable ZDL, a shunt cable FDL, a MX bus, an insulating sleeve 5, an insulating sleeve wrench 6 and an insulating rod 7.
Detailed Description
First embodiment, this embodiment is used for the fire of the main line of the high-voltage cable line.
As shown in fig. 1, the fire striking device disclosed in this embodiment includes a socket 1 and a plug head 2.
As shown in fig. 2 and 3, the plug base 1 includes a plug base insulating layer 11 and a plug base conductor 12. The plug 2 includes a plug insulating layer 21 and a plug conductor 22. The conductor and the insulating layer of the two are both cylindrical, and the insulating layer and the conductor are an integrated piece.
As shown in fig. 1, the plug seat 1 and the plug 2 are both linear structures, and both include a crimping end and a plugging end, the crimping end is used for crimping the trunk cable DL, and the plugging end is used for connecting the plug seat 1 and the plug 2 into a whole. The crimping ends are insulated by an insulating sealing cylinder 3.
The crimping ends of the plug seat conductor 12 and the plug head conductor 22 extend out of the end faces of the crimping ends of the two insulating layers, the plugging ends are located in the end faces of the plugging ends of the two insulating layers, notches along the length direction of the plugging ends are formed in the plugging ends of the plug seat conductor 12 and the plug head conductor 22, and the plugging ends of the plug seat conductor 1 and the plug head conductor 2 are provided with arc extinguish chambers. As shown in fig. 2 and 3.
As shown in fig. 2, the inner wall of the plugging end of the plug base insulating layer 11 has an axial annular groove 13 from the end surface to the inside, and the inner end surface of the axial annular groove 13 exceeds the bottom surface of the notch on the plugging end of the plug base conductor 12. The plugging end of the plugging seat insulating layer 11 is provided with a round hole 14 perpendicular to the length direction thereof, and the round hole is opened from one side of the plugging seat insulating layer 11 to a solid body penetrating through the notch of the plugging end of the plugging seat conductor 12.
As shown in fig. 3, a boss 15 is disposed at a position of the plug seat insulating layer 11 corresponding to the circular hole 14, and the circular hole 14 penetrates through the boss 15. The entity of the socket of the inserting end of the inserting and pulling head conductor 22 is provided with a corresponding threaded hole 23 corresponding to the round hole 14 on the inserting and pulling seat 1, and the corresponding position of the inserting and pulling head insulating layer is provided with a corresponding round hole.
As shown in fig. 4, the socket 1 and the plug end of the plug 2 are fastened by the external insulation bolt 4 passing through the round hole 14 and the threaded hole 23. The external insulation bolt 4 comprises a metal threaded section 41 at the lower part and an insulation head 42 at the upper end, and the length of the metal threaded section 41 is larger than the thickness of the plug seat conductor 12. The end of the insulation head 42 is positioned outside the boss 15, the outer wall of the end is provided with threads, and the center position is provided with an axial threaded hole 43 along the axial direction.
As shown in fig. 7, during installation, the crimping ends of the plug seat conductor 12 and the plug seat conductor 22 are respectively crimped with the trunk cable end, insulation treatment is performed on the crimping position through the insulation sealing cylinder 3 (the insulation sealing cylinder 3 is sleeved on the cable in advance), then the plugging end of the plug 2 is inserted into the axial annular groove 13 of the plugging end of the plug seat insulation layer 11, so that the plugging ends of the plug seat conductor 22 and the plug seat conductor 21 are mutually inserted into the notches of the other, and then the external insulation bolt is installed through a firing operation tool.
The fire setting operation tool includes an insulating socket 5, an insulating socket wrench 6, and an insulating rod 7. An insulating socket wrench 6 is rotatably arranged in the insulating socket 5, and an insulating rod 7 is rotatably arranged in an axial center hole of the insulating socket wrench 6. The inner of insulating box spanner 6 has from the terminal surface to the interior axial recess, and the axial recess is used for pegging graft the end of outer insulating bolt 4, and the inner of insulator spindle 7 is the screw thread head that matches with the 4 end axial screw holes of outer insulating bolt, and the screw thread head is located insulating box spanner 6's axial recess, and the outer end of insulator spindle 7 is located outside insulating box spanner 6. The inner end of the insulating sleeve 5 is in threaded connection with the outer wall of the end of the outer insulating bolt 4.
The specific installation steps of the external insulation bolt are as follows:
(1) Connecting the end of the outer insulating bolt 4 and the insulating sleeve 5 into a whole;
(2) Inserting an insulating socket wrench 6 into the insulating socket 5, and inserting an insulating rod 7 into an axial center hole of the insulating socket 5;
(3) Inserting an external insulating bolt 4 into the mounting position of the plugging seat 1;
(4) Rotating the insulating socket wrench 6 to axially insert the axial groove at the inner end of the insulating socket wrench with the end of the outer insulating bolt 4;
(5) The insulating rod 7 is rotated to enable the screw thread head at the inner end of the insulating rod to be screwed into the axial screw hole 43 at the end head of the outer insulating bolt 4, and the insulating rod 7 is continuously rotated to push the outer insulating bolt 4 to advance so as to tightly fix the plugging seat 1 and the plugging head 2 into a whole.
When the plug seat 1 is separated from the plug head 2, the disassembly direction of the external insulation bolt 4 is operated.
Second embodiment, this embodiment is used for multi-branch fire bridging of a cable line trunk line, and fig. 5 shows that the trunk line has four branch lines. The plug seat 1 is provided with two crimping ends, four plugging ends are arranged between the two crimping ends, each plugging end is connected with one plug head 2, and the crimping ends of the plug heads are in crimping connection with the cable shunt line. During installation, two crimping ends of the plugging and unplugging seat are well crimped with the ZDL end of the trunk cable, each plugging and unplugging head is well crimped with one FDL of the shunt cable, and then the plugging and unplugging head and the plugging and unplugging seat are fixedly connected into a whole through an external insulation bolt by adopting the method of the first embodiment.
In the third embodiment, the high-voltage switch cabinet is used for fire lapping of a high-voltage complete switch cabinet. As shown in fig. 6, the high voltage switchgear of the high voltage switchgear assembly has four plug bases 1 connected in series in sequence, the plug bases 1 on both sides have two plug ends and a crimping end, the crimping end is crimped with the bus MX into a whole, and the plug base 1 in the middle has three plug ends. The adjacent plugging seats 1 are connected into a whole in a longitudinal plugging and transverse fastening mode. Every plug seat 1 is connected a plug head 2 respectively, and the crimping end of every plug head 2 and high tension switchgear's reposition of redundant personnel cable FDL crimping. When any one of the high-voltage switch cabinets needs to be overhauled, the bus can be withdrawn under the electrified condition, only the corresponding plug head and the corresponding plug seat are needed to be separated, and when the high-voltage switch cabinet is connected after being overhauled, the plug head and the corresponding plug seat are electrified and connected, and then the plug head and the corresponding plug seat are fastened through the external insulation bolt, so that the normal operation of other high-voltage switch cabinets is not influenced. Can be under the electrified circumstances of bus, live working withdraws from the bus with the reposition of redundant personnel cable, can not enlarge the power failure scope, avoids taking place the casualties accident of electrocution in the maintenance process. The mounting and dismounting of the outer insulating bolt 4 are the same as those of the first embodiment.
Because the plug ends of the plug seat conductor and the plug head conductor are both positioned in the end surface of the insulating layer, the plug seat and the plug head are both provided with arc extinguish chambers at the plug ends. When the conductors on both sides contact, discharge occurs in the arc extinguishing chamber, and people cannot be injured.
Claims (4)
1. The utility model provides a device of taking fire of high tension cable line and cubical switchboard which characterized in that: the device comprises a plug head and a plug seat which are matched with each other, wherein the plug head and the plug seat are both integral parts of an insulating layer and a conductor, the plug seat at least comprises a plug end and a crimping end, the plug head comprises a plug end and a crimping end, the crimping ends of the plug seat and the plug head are respectively crimped with a cable into a whole, the plug ends of the plug head and the plug seat are connected and fastened through a transverse external insulation fastener after the conductors of the plug head and the plug seat are longitudinally spliced, and the plug seat and the plug head are connected and separated through installing and pulling out the external insulation fastener;
the crimping end of the plug seat conductor and the crimping end of the plug head conductor respectively extend out of the end face of the crimping end insulating layer, the plugging end is positioned in the end face of the plugging end insulating layer, and the plugging ends of the two conductors are respectively provided with notches along the length direction of the plugging ends;
the inner wall of the plug end insulating layer of the plug seat is provided with an axial annular groove from the end surface to the inside, and the inner end surface of the axial annular groove exceeds the bottom surface of the notch of the plug seat conductor plug end;
the plug head is inserted into the axial annular groove by the plug end, and the plug ends of the plug head conductor and the plug seat conductor are mutually inserted into the notches of the other side;
the plug end of the plug seat is provided with a round hole vertical to the length direction of the plug seat, the round hole is opened from one side of an insulating layer of the plug seat to an entity penetrating through a notch of the plug end of the conductor, a threaded hole is formed in the entity at the notch of the plug end of the plug head conductor corresponding to the round hole, the insulating layer at the plug end of the plug head is provided with a round hole corresponding to the threaded hole, the plug seat and the plug head are fastened through an external insulating bolt penetrating through the round hole and the threaded hole, the external insulating bolt comprises a metal thread section at the lower part and an insulating head at the upper end of the metal thread section, and the length of the metal thread section is greater than the thickness of the plug seat conductor;
a boss is arranged at a round hole on the insulating layer of the plugging seat corresponding to the plugging seat, and the round hole penetrates through the boss;
the end of the insulating head is positioned outside the end face of the boss, the outer wall of the end is provided with threads, and the center of the end is provided with an axial threaded hole.
2. The fire-fighting device for high-voltage cable lines and switch cabinets according to claim 1, characterized in that: the cross sections of the plug seat and the plug head conductor are circular or rectangular; the compression joint ends of the plug seat and the plug head are respectively provided with an insulating sealing cylinder for insulating and sealing the compression joint.
3. A fire-working tool for mounting and dismounting the outer insulating bolt according to claim 1, characterized in that: the tool comprises an insulating sleeve, an insulating sleeve wrench and an insulating rod, wherein the insulating sleeve wrench is rotatably arranged in the insulating sleeve, and the insulating rod is rotatably arranged in an axial center hole of the insulating sleeve wrench; the inner end of the insulating socket wrench is provided with an axial groove from the end surface to the inside, the axial groove is used for being inserted with the end head of the outer insulating bolt, the inner end of the insulating rod is a thread head matched with an axial threaded hole of the end head of the outer insulating bolt, the thread head is positioned in the axial groove of the insulating socket wrench, and the outer end of the insulating rod is positioned outside the insulating socket wrench; the inner end of the insulating sleeve is in threaded connection with the outer wall of the end of the outer insulating bolt.
4. A method of using the fire-working implement of claim 3, comprising the steps of:
inserting the plugging end of the plugging head into the plugging end of the plugging seat to enable the plugging end conductors of the plugging head and the plugging end conductors of the plugging seat to be respectively inserted into the notches of the opposite sides;
connecting the end of the outer insulating bolt and the insulating sleeve into a whole;
inserting an insulating sleeve spanner into an insulating sleeve, and inserting an insulating rod into an axial center hole of the insulating sleeve;
inserting an external insulation bolt into the mounting position of the plugging seat;
rotating the insulating socket wrench to enable the axial groove at the inner end of the insulating socket wrench to be axially inserted into the end head of the outer insulating bolt;
and rotating the insulating rod to enable the screw thread head at the inner end of the insulating rod to be screwed into the axial screw hole at the end head of the outer insulating bolt, and continuing to rotate the insulating rod to push the outer insulating bolt to move forward to fasten the plugging seat and the plugging head into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456707.7A CN107123909B (en) | 2017-06-16 | 2017-06-16 | Fire lapping device, fire lapping tool and method for high-voltage cable line and switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456707.7A CN107123909B (en) | 2017-06-16 | 2017-06-16 | Fire lapping device, fire lapping tool and method for high-voltage cable line and switch cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107123909A CN107123909A (en) | 2017-09-01 |
| CN107123909B true CN107123909B (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710456707.7A Active CN107123909B (en) | 2017-06-16 | 2017-06-16 | Fire lapping device, fire lapping tool and method for high-voltage cable line and switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107123909B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB287239A (en) * | 1926-12-17 | 1928-03-19 | William Richard Macdonald | Improvements relating to couplings or joints for electric cables |
| US5527191A (en) * | 1995-02-24 | 1996-06-18 | Toronto Electric Commissioners | Connector for use in cable splices |
| US7901243B1 (en) * | 2010-03-30 | 2011-03-08 | Tyco Electronics Corporation | Methods and systems for forming a protected disconnectable joint assembly |
| CN202957568U (en) * | 2012-11-30 | 2013-05-29 | 鞍钢股份有限公司 | Cable connecting device |
| CN204732841U (en) * | 2015-06-30 | 2015-10-28 | 国家电网公司 | Cable branch box shunting wall bushing and connecting assembly thereof |
| CN206117105U (en) * | 2016-08-22 | 2017-04-19 | 山东泰开电缆有限公司 | Insulation tubular busbar end connecting device based on plane |
| CN207559215U (en) * | 2017-06-16 | 2018-06-29 | 国家电网公司 | A kind of Voltage Cable Lines Construction and switchgear take fiery device |
-
2017
- 2017-06-16 CN CN201710456707.7A patent/CN107123909B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB287239A (en) * | 1926-12-17 | 1928-03-19 | William Richard Macdonald | Improvements relating to couplings or joints for electric cables |
| US5527191A (en) * | 1995-02-24 | 1996-06-18 | Toronto Electric Commissioners | Connector for use in cable splices |
| US7901243B1 (en) * | 2010-03-30 | 2011-03-08 | Tyco Electronics Corporation | Methods and systems for forming a protected disconnectable joint assembly |
| CN202957568U (en) * | 2012-11-30 | 2013-05-29 | 鞍钢股份有限公司 | Cable connecting device |
| CN204732841U (en) * | 2015-06-30 | 2015-10-28 | 国家电网公司 | Cable branch box shunting wall bushing and connecting assembly thereof |
| CN206117105U (en) * | 2016-08-22 | 2017-04-19 | 山东泰开电缆有限公司 | Insulation tubular busbar end connecting device based on plane |
| CN207559215U (en) * | 2017-06-16 | 2018-06-29 | 国家电网公司 | A kind of Voltage Cable Lines Construction and switchgear take fiery device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107123909A (en) | 2017-09-01 |
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