CN105322497A - Multifunctional high-voltage cable grounding box - Google Patents
Multifunctional high-voltage cable grounding box Download PDFInfo
- Publication number
- CN105322497A CN105322497A CN201510908309.5A CN201510908309A CN105322497A CN 105322497 A CN105322497 A CN 105322497A CN 201510908309 A CN201510908309 A CN 201510908309A CN 105322497 A CN105322497 A CN 105322497A
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- CN
- China
- Prior art keywords
- core connector
- protection device
- overvoltage protection
- inner core
- yoke plate
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/085—Cable junctions for coaxial cables or hollow conductors
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- Cable Accessories (AREA)
Abstract
The invention discloses a multifunctional high-voltage cable grounding box. Three coaxial cables 11 extending out of a box body are arranged in the box body 1; an inner core connection head 2 and an outer core connection head 3 are respectively arranged on each coaxial cable 11, and connect the corresponding coaxial cable 11 to a copper insulating shell 12 of an insulating middle joint of a high-voltage cable; a grounding connection head 4 is further arranged on the box body 1; a detachable overvoltage protector 5 is further arranged in the box body 1, and is connected with the grounding connection head 4; detachable connection plates for connecting the inner core connection heads 2 with an outer core connection heads 3, the inner core connection heads 2 with the overvoltage protector 5, the outer core connection heads 3 with the overvoltage protector 5, the inner core connection heads 2 with the grounding connection head 4, and the outer core connection heads 3 with the grounding connection head 4 are further arranged in the box body. The grounding box can reduce the use amount of grounding cables in a working process of high-voltage cable grounding transformation and the workload of workers.
Description
Technical field
The present invention relates to a kind of grounding box, particularly relate to the multifunctional grounded case of a kind of high-tension cable.
Background technology
High voltage electric transmission cable wired foil sheath adopts the mode of the cross interconnected transposition of segmentation usually, to reduce induced voltage on metallic sheath, thus the induced current that reduction metallic sheath circulates.For this reason, need by high-tension cable segmentation, often continuous three sections of cables adopt two insulation intermediate connectors to connect, and form one cross interconnected section; The metallic sheath being positioned at insulation intermediate connector both sides is connected to two cross interconnected casees by coaxial cable, realizes coordinated transposition; Cross interconnected section of both sides cable metal sheath is connected with earth mat by earth connection.
When the cable in cross interconnected section is subject to outside destroy, the earthing mode that this coordinated transposition of metallic sheath connects also is destroyed, the three sections of cables now forming cross interconnected section are at least divided into four sections, cause metallic sheath induced voltage to can not get balance, there will be the potential safety hazard that induced current exceeds standard.Now, general needs adopts the earthing mode of one end direct ground connection one end band protector ground connection to transform to corresponding four sections of metallic sheaths respectively.By the restriction of the many factors such as existing grounding box function, on-the-spot running environment, power system operating mode; at present; the transformation of the connected mode of above-mentioned be damaged cable and metallic sheath generally need abandon existing two cross interconnected casees; and increase by three direct grounding boxes, three band overvoltage protection device grounding boxes, 24 sections of single core earth cables, just can complete service work.This not only can the earth cable of at substantial, also greatly will increase workload, and cause improvement cost too high.
Summary of the invention
Problem to be solved by this invention, is just to provide the multifunctional grounded case of a kind of high-tension cable, and it effectively can reduce the use amount of earth cable and the workload of staff in the high-tension cable grounding reconstruction course of work, reduces improvement cost.
Solve the problems of the technologies described above, the technical solution used in the present invention is as follows:
The multifunctional grounded case of a kind of high-tension cable, casing 1 inside comprises the coaxial cable 11 that three extend to casing outside, each coaxial cable 11 is respectively equipped with inner core connector 2 and outer core connector 3, and described coaxial cable 11 is connected to high-voltage cable insulating transition joint insulated copper shell 12 by described inner core connector 2 and outer core connector 3; Described casing is also provided with grounding connection head 4, it is characterized in that: described casing 1 inside is also provided with dismountable overvoltage protection device 5, and described overvoltage protection device 5 connects described grounding connection head 4; The multifunctional grounded case of described high-tension cable is also provided with and connects inner core connector 2 and outer core connector 3, inner core connector 2 and overvoltage protection device 5, outer core connector 3 and overvoltage protection device 5, inner core connector 2 and grounding connection head 4, detachable yoke plate between outer core connector 3 and grounding connection head 4.
Preferably, described overvoltage protection device 5 is connected with described grounding connection head 4 by voltage protector ground connection yoke plate 8.
All there is screw rod at overvoltage protection device about 6 two ends, to be connected with grounding copper bar or yoke plate easily and to dismantle.
Described overvoltage protection device 6 totally 6, is arranged on the overvoltage protection device ground connection yoke plate 8 described in 2 respectively.
Preferably; it is cross interconnected that described inner core connector 2 and outer core connector 3 pass through yoke plate; and described inner core connector 2 is connected with described overvoltage protection device 5, to realize the coordinated transposition of the both sides metallic sheath of high-voltage cable three-phase insulation intermediate connector insulated copper shell.
Preferably, described inner core connector 2 is connected by yoke plate with overvoltage protection device 5, and described outer core connector 3 is connected with overvoltage protection device 5, is with protector ground connection to realize high-voltage cable insulating transition joint both sides metallic sheath simultaneously.
Preferably, described inner core connector 2 is connected by yoke plate with grounding connection head 4, and described outer core connector 3 is connected by yoke plate with grounding connection head 4, to realize high-voltage cable insulating transition joint both sides metallic sheath direct ground connection simultaneously.
Preferably; described inner core connector 2 is connected by yoke plate with overvoltage protection device 5; and described outer core connector 3 is connected with grounding connection head 4 by yoke plate, to realize coaxial cable inner core band protector ground connection, the direct ground connection of outer core of the metallic sheath connection of high-voltage cable insulating transition joint both sides.
Preferably; described inner core connector 2 is connected with grounding connection head 4 by yoke plate; and described outer core connector 3 is connected with overvoltage protection device 5 by yoke plate, to realize the outer core ribbon protector ground connection of coaxial cable, the direct ground connection of inner core of the metallic sheath connection of high-voltage cable insulating transition joint both sides.
Preferably, described inner core connector 2 and outer core connector 3 are respectively by yoke plate, be connected with grounding connection head 4, and the outer core that described coaxial cable 11 is positioned at the part of described casing 1 outside draws and departs from inner core, with the while of directly grounded realizing high-voltage cable insulating transition joint both sides metallic sheath while, high-tension cable oversheath grounding circulation also can be measured.
Beneficial effect:
The present invention, by setting up overvoltage protection device and dismountable yoke plate in grounding box, can reduce the use amount of grounding box and earth cable in the high-tension cable grounding reconstruction course of work, thus reduces improvement cost.The present invention makes full use of inner existing space in grounding box, and without the need to making change to existing grounding box structure, assembling is simple, and cost is lower.
Accompanying drawing explanation
Hereafter by reference to the accompanying drawings and specific embodiment, the present invention is further detailed.
Fig. 1 is the connection diagram of grounding box of the present invention;
Fig. 2 is the structural representation of embodiments of the invention 1;
Fig. 3 is the structural representation of embodiments of the invention 2;
Fig. 4 is the structural representation of embodiments of the invention 3;
Fig. 5 is the structural representation of embodiments of the invention 4;
Fig. 6 is the structural representation of embodiments of the invention 5;
Fig. 7 is the structural representation of embodiments of the invention 6.
Reference numeral: 1-casing; 2-inner core connector; The outer core connector of 3-; 4-grounding connection head; 5-overvoltage protection device; The cross interconnected yoke plate of 6-; The direct ground connection yoke plate of core inside and outside 7-coaxial cable; 8-voltage protector ground connection yoke plate; 9-connects sheath overvoltage protection device yoke plate; 11-coaxial cable; 12-high-voltage cable insulating transition joint insulated copper shell.
Embodiment
embodiment 1
As shown in Figure 1 and 2, the multifunctional grounded case of a kind of high-tension cable, casing 1 inside comprises three and extends to outside coaxial cable 11, each coaxial cable 11 is respectively equipped with inner core connector 2 and outer core connector 3, and described coaxial cable 11 is connected to high-voltage cable insulating transition joint insulated copper shell 12 by described inner core connector 2 and outer core connector 3; Described casing is also provided with grounding connection head 4, it is characterized in that: described casing 1 inside is also provided with three overvoltage protection devices 5 and connects inner core connector 2 and outer core connector 3, inner core connector 2 and overvoltage protection device 5, outer core connector 3 and overvoltage protection device 5, inner core connector 2 and grounding connection head 4, detachable yoke plate between outer core connector 3 and grounding connection head 4; Described overvoltage protection device 5 connects described grounding connection head 4.Described overvoltage protection device 5 is connected with described grounding connection head 4 by overvoltage protection device ground connection yoke plate 8.Wherein, the cross interconnected yoke plate 6 connecting inner core connector 2 and outer core connector 3 and the connection sheath overvoltage protection device yoke plate 9 being connected inner core connector 2 and overvoltage protection device 5 are in installment state, and other yoke plate is in disassembly status.Now, the coordinated transposition of the both sides metallic sheath of high-voltage cable three-phase insulation intermediate connector insulated copper shell can be realized.
embodiment 2
As shown in figs. 1 and 3, the structure of the multifunctional grounded case of high-tension cable of the present embodiment is identical with embodiment 1, and difference is: six overvoltage protection devices 5 are in installment state simultaneously; Connect inner core connector 2 and be in installment state with the connection sheath overvoltage protection device yoke plate 9 of overvoltage protection device 5 with the connection sheath overvoltage protection device yoke plate 9 being connected outer core connector 3 and overvoltage protection device 5, other yoke plate is in disassembly status.Now, high-voltage cable insulating transition joint both sides metallic sheath can be realized and be with protector ground connection simultaneously.
embodiment 3
As shown in figs. 1 and 4, the structure of the multifunctional grounded case of high-tension cable of the present embodiment is identical with embodiment 1, and difference is: six overvoltage protection devices 5 are in disassembly status simultaneously; Connect inner core connector 2 and core direct ground connection yoke plate 7 inside and outside the coaxial cable of grounding connection head 4 and be in installment state with the direct ground connection yoke plate 7 of core inside and outside the coaxial cable being connected outer core connector 3 and grounding connection head 4, other yoke plate is in disassembly status.Now, high-voltage cable insulating transition joint both sides metallic sheath direct ground connection simultaneously can be realized.
embodiment 4
As described in figures 1 and 5; the structure of the multifunctional grounded case of high-tension cable of the present embodiment is identical with embodiment 1; difference is: the connection sheath overvoltage protection device yoke plate 9 connecting inner core connector 2 and overvoltage protection device 5 is in installment state with the direct ground connection yoke plate 7 of core inside and outside the coaxial cable being connected outer core connector 3 and grounding connection head 4, and other yoke plate is in disassembly status.Now, the coaxial cable inner core band protector ground connection of high-voltage cable insulating transition joint both sides metallic sheath connection, the direct ground connection of outer core can be realized.
embodiment 5
As shown in figures 1 to 6; the structure of the multifunctional grounded case of high-tension cable of the present embodiment is identical with embodiment 1; difference is: connect inner core connector 2 and be in installment state with core direct ground connection yoke plate 7 inside and outside the coaxial cable of grounding connection head 4 with the connection sheath overvoltage protection device yoke plate 9 being connected outer core connector 3 and overvoltage protection device 5, other yoke plate is in disassembly status.Now, the outer core ribbon protector ground connection of coaxial cable of high-voltage cable insulating transition joint both sides metallic sheath connection, the direct ground connection of inner core can be realized.
embodiment 6
As shown in Figure 1 and Figure 7, the structure of the multifunctional grounded case of high-tension cable of the present embodiment is identical with embodiment 3, difference is: the outer core part be positioned at outside casing 1 of coaxial cable 11 stretches and transforms formation half arc, it is made to depart from inner core, with realize high-voltage cable insulating transition joint both sides metallic sheath directly grounded while, also can measure high-tension cable oversheath grounding circulation.
Claims (10)
1. the multifunctional grounded case of high-tension cable, casing (1) inside comprises the coaxial cable (11) that three extend to casing outside, each described coaxial cable (11) is respectively equipped with inner core connector (2) and outer core connector (3), and described coaxial cable (11) is connected to high-voltage cable insulating transition joint insulated copper shell (12) by described inner core connector (2) and outer core connector (3); Described casing (1) is also provided with grounding connection head (4); it is characterized in that: described casing (1) inside is also provided with dismountable overvoltage protection device (5), the grounding connection head (4) described in described overvoltage protection device (5) connects; The multifunctional grounded case of described high-tension cable is also provided with the detachable yoke plate connecting inner core connector (2) and outer core connector (3), inner core connector (2) and overvoltage protection device (5), outer core connector (3) and overvoltage protection device (5), inner core connector (2) and grounding connection head (4), outer core connector (3) and grounding connection head (4).
2. the described multifunctional grounded case of high-tension cable according to claim 1, is characterized in that: described overvoltage protection device (5) is connected with described grounding connection head (4) by overvoltage protection device ground connection yoke plate (8).
3. the multifunctional grounded case of high-tension cable according to claim 2, is characterized in that: all there is screw rod at the two ends up and down of described overvoltage protection device (5).
4. the multifunctional grounded case of the high-tension cable according to Claims 2 or 3, is characterized in that: described overvoltage protection device (6) totally 6, is arranged on respectively on the overvoltage protection device ground connection yoke plate (8) described in 2.
5. according to the multifunctional grounded case of the high-tension cable in claim 1 ~ 3 described in any one; it is characterized in that: described inner core connector (2) and outer core connector (3) cross interconnected by yoke plate, and described inner core connector (2) is connected by yoke plate with described overvoltage protection device (5).
6. according to the multifunctional grounded case of the high-tension cable in claim 1 ~ 3 described in any one; it is characterized in that: described inner core connector (2) is connected by yoke plate with overvoltage protection device (5), and described outer core connector (3) is connected with overvoltage protection device (5).
7. according to the multifunctional grounded case of the high-tension cable in claim 1 ~ 3 described in any one, it is characterized in that: described inner core connector (2) is connected by yoke plate with grounding connection head (4), and described outer core connector (3) is connected by yoke plate with grounding connection head (4).
8. according to the multifunctional grounded case of the high-tension cable in claim 1 ~ 3 described in any one; it is characterized in that: described inner core connector (2) is connected by yoke plate with overvoltage protection device (5), and described outer core connector (3) is connected by yoke plate with grounding connection head (4).
9. according to the multifunctional grounded case of the high-tension cable in claim 1 ~ 3 described in any one; it is characterized in that: described inner core connector (2) is connected by yoke plate with grounding connection head (4), and described outer core connector 3 is connected by yoke plate with overvoltage protection device (5).
10. the multifunctional grounded case of high-tension cable according to claim 7, is characterized in that: described coaxial cable (11) is positioned at the outer core of described casing (1) part outward and inner core departs from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908309.5A CN105322497A (en) | 2015-12-10 | 2015-12-10 | Multifunctional high-voltage cable grounding box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510908309.5A CN105322497A (en) | 2015-12-10 | 2015-12-10 | Multifunctional high-voltage cable grounding box |
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| Publication Number | Publication Date |
|---|---|
| CN105322497A true CN105322497A (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510908309.5A Pending CN105322497A (en) | 2015-12-10 | 2015-12-10 | Multifunctional high-voltage cable grounding box |
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| Country | Link |
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| CN (1) | CN105322497A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110288888A (en) * | 2019-07-30 | 2019-09-27 | 国网上海市电力公司 | A kind of remodeling method of cable sheath grounding circulation simulator and the case that replaces |
| CN110474286A (en) * | 2019-09-17 | 2019-11-19 | 深圳供电局有限公司 | Variable connecting box for coaxial cable inlet wire |
| CN110661229A (en) * | 2019-09-17 | 2020-01-07 | 深圳供电局有限公司 | Single-core cable transposition connecting device |
| CN112510492A (en) * | 2020-11-30 | 2021-03-16 | 国网北京市电力公司 | Grounding box capable of switching grounding modes of high-voltage cable and electronic device |
| CN112787295A (en) * | 2021-01-06 | 2021-05-11 | 国核电力规划设计研究院重庆有限公司 | Cable transposition erection structure in subdivision cable tunnel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994009542A1 (en) * | 1992-10-09 | 1994-04-28 | Mkm Magyar Kábel Muvek Részvénytársaság | Apparatus for disconnecting and cross-bonding of a metallic shield of a cable |
| CN202957567U (en) * | 2012-11-23 | 2013-05-29 | 保定鼎阳电力科技发展有限公司 | Anti-electric-shock intersecting interconnecting protection box |
| CN103427390A (en) * | 2013-08-24 | 2013-12-04 | 广州友智电气技术有限公司 | Intelligent intersected interconnection box device |
| CN204012632U (en) * | 2014-06-30 | 2014-12-10 | 青岛汉缆股份有限公司 | For the cross interconnected guard box of high-voltage and ultra-high network system |
| CN104485628A (en) * | 2014-12-09 | 2015-04-01 | 国家电网公司 | Integrated earthing box for high-voltage cable circuit |
| CN205304205U (en) * | 2015-12-10 | 2016-06-08 | 广东电网有限责任公司东莞供电局 | Multi -functional grounding box of high tension cable |
-
2015
- 2015-12-10 CN CN201510908309.5A patent/CN105322497A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994009542A1 (en) * | 1992-10-09 | 1994-04-28 | Mkm Magyar Kábel Muvek Részvénytársaság | Apparatus for disconnecting and cross-bonding of a metallic shield of a cable |
| CN202957567U (en) * | 2012-11-23 | 2013-05-29 | 保定鼎阳电力科技发展有限公司 | Anti-electric-shock intersecting interconnecting protection box |
| CN103427390A (en) * | 2013-08-24 | 2013-12-04 | 广州友智电气技术有限公司 | Intelligent intersected interconnection box device |
| CN204012632U (en) * | 2014-06-30 | 2014-12-10 | 青岛汉缆股份有限公司 | For the cross interconnected guard box of high-voltage and ultra-high network system |
| CN104485628A (en) * | 2014-12-09 | 2015-04-01 | 国家电网公司 | Integrated earthing box for high-voltage cable circuit |
| CN205304205U (en) * | 2015-12-10 | 2016-06-08 | 广东电网有限责任公司东莞供电局 | Multi -functional grounding box of high tension cable |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110288888A (en) * | 2019-07-30 | 2019-09-27 | 国网上海市电力公司 | A kind of remodeling method of cable sheath grounding circulation simulator and the case that replaces |
| CN110288888B (en) * | 2019-07-30 | 2024-01-30 | 国网上海市电力公司 | Cable sheath grounding circular flow simulation device and transformation method of transposition box |
| CN110474286A (en) * | 2019-09-17 | 2019-11-19 | 深圳供电局有限公司 | Variable connecting box for coaxial cable inlet wire |
| CN110661229A (en) * | 2019-09-17 | 2020-01-07 | 深圳供电局有限公司 | Single-core cable transposition connecting device |
| CN110661229B (en) * | 2019-09-17 | 2021-02-05 | 深圳供电局有限公司 | Single-core cable transposition connecting device |
| CN112510492A (en) * | 2020-11-30 | 2021-03-16 | 国网北京市电力公司 | Grounding box capable of switching grounding modes of high-voltage cable and electronic device |
| CN112787295A (en) * | 2021-01-06 | 2021-05-11 | 国核电力规划设计研究院重庆有限公司 | Cable transposition erection structure in subdivision cable tunnel |
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Application publication date: 20160210 |