CN114928009B - High-voltage cable grounding box capable of being free from opening detection - Google Patents
High-voltage cable grounding box capable of being free from opening detection Download PDFInfo
- Publication number
- CN114928009B CN114928009B CN202210706013.5A CN202210706013A CN114928009B CN 114928009 B CN114928009 B CN 114928009B CN 202210706013 A CN202210706013 A CN 202210706013A CN 114928009 B CN114928009 B CN 114928009B
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- Prior art keywords
- box
- insulating
- conductor
- protective layer
- support plate
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 239000004020 conductor Substances 0.000 claims abstract description 89
- 230000001012 protector Effects 0.000 claims abstract description 27
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000011241 protective layer Substances 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
-
- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/18—Distribution boxes; Connection or junction boxes providing line outlets
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cable Accessories (AREA)
Abstract
The invention relates to the technical field of power cables, in particular to a high-voltage cable grounding box capable of being free from opening detection. The invention discloses a high-voltage cable grounding box capable of being detected without opening, which comprises a box body, wherein a box cover is arranged on the box body; the box body is internally provided with a protective layer protector and a conductor connecting seat, a first aluminum row is arranged between the protective layer protector and the conductor connecting seat, and the conductor connecting seat is connected with a cable led in from outside the box body; the protective layer protector and the conductor connecting seat are both connected with test outgoing lines, the box cover is provided with detection holes connected with the test outgoing lines, the box cover is also provided with a knob switch which can be used for connecting or disconnecting the conductors and is connected with the conductor connecting seat. The invention solves the technical problem of developing a high-voltage cable grounding box which can control connection and disconnection of conductors in the box without opening the box to directly detect.
Description
Technical Field
The invention relates to the technical field of power cables, in particular to a high-voltage cable grounding box capable of being free from opening detection.
Background
In a power transmission cable of a power system, in order to ensure reliable operation of the cable, power failure detection is required to be periodically carried out on a high-voltage cable, and main insulation, a metal sheath and a sheath protector of the cable are required to be detected according to requirements of QGDW 11316-2014 power cable line test procedure and GB50150-2016 electrical device installation engineering electrical equipment handover test standard.
According to the existing high-voltage cable detection scheme, a high-voltage cable grounding box needs to be opened during detection, and an aluminum row between an inner conductor and the grounding and between an outer conductor and the grounding is disconnected. However, in the cable line, the high-voltage cable grounding box is generally installed in the cable tunnel, the urban utility tunnel and the cable joint well, so that when the cable is run and detected, the cable is usually in a narrow and airtight space, and the grounding box is opened to perform series detection operation, which is particularly inconvenient. Moreover, the assembly and disassembly time of the high-voltage cable accessory box is long, accidents are easy to occur, and the tightness of the grounding box is easy to be damaged by repeated assembly.
Those skilled in the art have therefore sought to develop a high voltage cable grounding box that can be directly tested by manipulating the connection and disconnection of conductors within the box without opening the box.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention discloses a high-voltage cable grounding box capable of opening-free detection, and aims to provide a high-voltage cable grounding box capable of directly detecting by operating connection and disconnection of conductors in the box without opening the box.
In order to achieve the above purpose, the invention provides a high-voltage cable grounding box capable of opening-free detection, which comprises a box body, wherein a box cover is arranged on the box body; the box body is internally provided with a protective layer protector and a conductor connecting seat, a first aluminum row is arranged between the protective layer protector and the conductor connecting seat, and the conductor connecting seat is connected with a cable led in from the outside of the box body; the protective layer protector and the conductor connecting seat are both connected with test outgoing lines, the box cover is provided with detection holes connected with the test outgoing lines, the box cover is also provided with a knob switch capable of being connected or disconnecting the power on between conductors in the box, and the knob switch is connected with the conductor connecting seat.
Preferably, an insulating support plate is arranged in the box body, the protective layer protector and the conductor connecting seat are installed on the insulating support plate, a ground reflux row is connected between the protective layer protectors, and the ground reflux row is connected with a ground end.
Preferably, the insulating support plate comprises a first support plate and a second support plate, the protective layer protector is arranged on the first support plate, and the conductor connecting seat is arranged on the second support plate.
Preferably, the conductor connecting seat comprises an inner conductor clamping seat and an outer conductor clamping seat, the inner conductor clamping seat and the outer conductor clamping seat are both arranged on the second supporting plate, a second aluminum row is arranged between the inner conductor clamping seat and the outer conductor clamping seat, and the outer conductor clamping seat is connected with the cable.
Preferably, the knob switch comprises an insulating connecting rod, and a disconnection piece is arranged on the insulating connecting rod; one end of the insulating connecting rod is provided with an operation knob, the other end of the insulating connecting rod is rotationally connected with the conductor connecting seat, and the operation knob is arranged on the outer side of the box cover.
Preferably, the disconnection piece is located between the first aluminum row and the second aluminum row, and the disconnection piece is circular, and comprises a fan-shaped insulating block and a fan-shaped conductor block.
Preferably, an insulating sheath is clamped in the detection hole, a connecting sleeve is connected in the insulating sheath, the connecting sleeve comprises an insulating part and a conducting part, the insulating part is in threaded connection with the insulating sheath, and a connecting sheet is arranged on the conducting part.
Preferably, the connecting piece is provided with a connecting hole, and the inner side hole of the conductive part is a conical hole.
Preferably, the number of the detection holes is 6 or 9.
Preferably, the outer sides of all the detection holes are buckled with a protective cover.
The beneficial effects of the invention are as follows:
through increasing the knob switch, the disconnection and the closure of the connection between various conductors in the control grounding box can be segmented with various conductors in the box to all set up test lead-out wire and increase the test hole on the case lid on sheath protector and conductor connecting seat, can carry out segmentation extraction detection with the conductor of different district through test lead-out wire, thereby realized not opening grounding box and not carrying out under the circumstances that inner assembly dismantles (like the disconnection of aluminium row) to each part segmentation such as sheath protector, cable metal sheath, and then ensured fortune inspection personnel's safety, improved cable detection efficiency, and still protected the leakproofness of high voltage cable grounding box, improved the life of grounding box.
Drawings
Fig. 1 is a schematic structural view of a case according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of a case cover according to a first embodiment of the present invention;
FIG. 3 is a schematic view of the structure of a case according to a second embodiment of the present invention;
fig. 4 is a schematic structural view of a case cover according to a second embodiment of the present invention;
fig. 5 is a schematic structural view of a case according to a third embodiment of the present invention;
fig. 6 is a schematic structural view of a case cover according to a third embodiment of the present invention;
FIG. 7 is a schematic view of the structure of the rotary switch of the present invention;
FIG. 8 is a schematic view of the knob switch of the present invention in use;
FIG. 9 is a schematic view of the knob switch of the present invention in use;
fig. 10 is a schematic cross-sectional structure of a detection hole of the present invention.
In the above figures: 1. a case; 11. a first aluminum row; 12. a sheath protector; 13. a conductor connecting seat; 131. an inner conductor holder; 132. an outer conductor holder; 14. testing the outgoing line; 15. an insulating support plate; 151. a first support plate; 152. a second support plate; 16. a ground return line; 17. a grounding end; 18. a second aluminum row; 2. a case cover; 21. a detection hole; 22. an insulating sheath; 23. connecting sleeves; 231. an insulating part; 232. a conductive portion; 233. a connecting sheet; 3. a knob switch; 31. an insulating connecting rod; 32. a disconnection member; 321. an insulating block; 322. a conductor block; 33. operating a knob; 4. and (3) a cable.
Detailed Description
The present invention will be further described with reference to the drawings and examples, and it should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific manner, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 6, the invention provides a high-voltage cable grounding box capable of being detected without opening, which comprises a box body 1, wherein a box cover 2 is arranged on the box body 1; the box body 1 is internally provided with a protective layer protector 12 and a conductor connecting seat 13, a first aluminum row 11 is arranged between the protective layer protector 12 and the conductor connecting seat 13, and the conductor connecting seat 13 is connected with a cable 4 led in from outside the box; the protective layer protector 12 and the conductor connecting seat 13 are both connected with a test outgoing line 14, the box cover 2 is provided with a detection hole 21 connected with the test outgoing line 14, the box cover 2 is also provided with a knob switch 3 capable of connecting or disconnecting the power between conductors in the box, and the knob switch 3 is connected with the conductor connecting seat 13. In addition, an insulating support plate 15 is arranged in the box body 1, a protective layer protector 12 and a conductor connecting seat 13 are arranged on the insulating support plate 15, a ground reflux row 16 is connected between the protective layer protectors 12, and the ground reflux row 16 is connected with a ground end 17. Further, the insulating support plate 15 includes a first support plate 151 and a second support plate 152, the first support plate 151 is provided with the protective layer protector 12, and the second support plate 152 is provided with the conductor connecting seat 13.
In this embodiment, by adding the knob switch 3 to control the opening and closing of the connection between the various conductors in the grounding box, the various conductors in the box can be segmented, and by arranging the test outgoing line 14 on the sheath protector 12 and the conductor connecting seat 13 and adding the test hole on the box cover 2, the conductors in different sections can be led out and detected in a segmented manner through the test outgoing line 14, thereby realizing the detection of the sheath protector 12, the metal sheath of the cable 4 and other parts in a segmented manner under the conditions of not opening the grounding box and not performing internal assembly and disassembly (such as the disconnection of an aluminum row), further guaranteeing the safety of operation and inspection personnel, improving the detection efficiency of the cable 4, protecting the tightness of the grounding box of the high-voltage cable 4 and prolonging the service life of the grounding box.
As shown in fig. 7, the knob switch 3 according to the present invention includes an insulating connecting rod 31, a disconnecting member 32 is disposed on the insulating connecting rod 31, the disconnecting member 32 is circular, the disconnecting member 32 includes a fan-shaped insulating block 321 and a fan-shaped conductor block 322, and the thickness of the conductor block 322 may be greater than that of the insulating block 321. One end of the insulating link 31 is provided with an operation knob 33, the other end of the insulating link 31 is rotatably connected to the conductor connecting base 13, and the operation knob 33 is provided outside the case cover 2. By turning the operation knob 33 on the box cover 2, the conductor block 322 can be brought into contact with or out of contact with the conductors in the box, thereby controlling the opening and closing of the connection between the various conductors in the grounding box.
As shown in fig. 10, a schematic cross-sectional structure of a detection hole 21 according to the present invention is shown, an insulation sheath 22 is clamped in the detection hole 21, a connection sleeve 23 is connected in the insulation sheath 22, the connection sleeve 23 includes an insulation portion 231 and a conductive portion 232, the insulation portion 231 is in threaded connection with the insulation sheath 22, and a connection piece 233 is provided on the conductive portion 232. Meanwhile, the connection piece 233 is provided with a connection hole, and the end of the test lead wire 14 is connected by passing through the connection wire. The inner hole of the conductive part 232 is a tapered hole, so that the connection of the detection probe inserted into the hole and the conductive part 232 is facilitated when the detection is performed. For rain and dust protection, the outer sides of all the detection holes 21 are buckled with a protective cover, and for convenient operation, the case cover 2 is also provided with word indications of open and closed.
As shown in fig. 1 and 2, a schematic structural diagram of a case 1 according to a first embodiment of the present invention is shown, which is a direct grounding case, and the number of detection holes 21 is 6.
As shown in fig. 3 and 4, a schematic structural diagram of a box body 1 according to a second embodiment of the present invention is shown, which is a protective grounding box, the conductor connecting seat 13 includes an inner conductor clamping seat 131 and an outer conductor clamping seat 132, the inner conductor clamping seat 131 and the outer conductor clamping seat 132 are both disposed on a second supporting plate 152, a second aluminum row 18 is disposed between the inner conductor clamping seat 131 and the outer conductor clamping seat 132, and the outer conductor clamping seat 132 is connected with the cable 4. As shown in fig. 8 and 9, the disconnection piece 32 is located between the first aluminum row 11 and the second aluminum row 18 for connecting or disconnecting the first aluminum row 11 and the second aluminum row 18. In the present embodiment, the number of the detection holes 21 is 9.
As shown in fig. 5 and 6, a box body 1 according to a third embodiment of the present invention is a cross-connection ground box, the conductor connecting base 13 includes an inner conductor holder 131 and an outer conductor holder 132, the inner conductor holder 131 and the outer conductor holder 132 are both disposed on a second support plate 152, a second aluminum row 18 is disposed between the inner conductor holder 131 and the outer conductor holder 132, and the outer conductor holder 132 is connected with the cable 4. As shown in fig. 8 and 9, the disconnection piece 32 is located between the first aluminum row 11 and the second aluminum row 18 for connecting or disconnecting the first aluminum row 11 and the second aluminum row 18. In the present embodiment, the number of the detection holes 21 is 9.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (5)
1. The utility model provides a can exempt from to open high tension cable grounding box that detects which characterized in that: the novel box comprises a box body (1), wherein a box cover (2) is arranged on the box body (1); a protective layer protector (12) and a conductor connecting seat (13) are arranged in the box body (1), and the conductor connecting seat (13) is connected with a cable (4) led in from the outside of the box; the protective layer protector (12) and the conductor connecting seat (13) are both connected with a test outgoing line (14), the box cover (2) is provided with a detection hole (21) connected with the test outgoing line (14), and the box cover (2) is also provided with a knob switch (3) capable of connecting or disconnecting the power between conductors in the box;
an insulating support plate (15) is arranged in the box body (1), the protective layer protector (12) and the conductor connecting seat (13) are arranged on the insulating support plate (15), a ground reflux row (16) is connected between the protective layer protectors (12), and the ground reflux row (16) is connected with a ground end (17);
the insulating support plate (15) comprises a first support plate (151) and a second support plate (152), the protective layer protector (12) is arranged on the first support plate (151), and the conductor connecting seat (13) is arranged on the second support plate (152);
the conductor connecting seat (13) comprises an inner conductor clamping seat (131) and an outer conductor clamping seat (132), the inner conductor clamping seat (131) and the outer conductor clamping seat (132) are both arranged on the second supporting plate (152), a second aluminum row (18) is arranged between the inner conductor clamping seat (131) and the outer conductor clamping seat (132), and a first aluminum row (11) is arranged between the protective layer protector (12) and the inner conductor clamping seat (131); the outer conductor clamping seat (132) is connected with the cable (4), and the knob switch (3) is arranged on the inner conductor clamping seat (131);
the knob switch (3) comprises an insulating connecting rod (31), and a disconnection piece (32) is arranged on the insulating connecting rod (31); an operation knob (33) is arranged at one end of the insulation connecting rod (31), the other end of the insulation connecting rod (31) is rotationally connected with the conductor connecting seat (13), and the operation knob (33) is arranged at the outer side of the box cover (2);
the disconnecting piece (32) is positioned between the second aluminum row (18) and the first aluminum row (11), the disconnecting piece (32) is circular, and the disconnecting piece (32) comprises a fan-shaped insulating block (321) and a fan-shaped conductor block (322).
2. The opening detection free high voltage cable grounding box of claim 1, wherein: the detection hole (21) is internally clamped with an insulating sheath (22), the insulating sheath (22) is internally connected with a connecting sleeve (23), the connecting sleeve (23) comprises an insulating part (231) and a conducting part (232), the insulating part (231) is in threaded connection with the insulating sheath (22), and the conducting part (232) is provided with a connecting sheet (233).
3. The opening detection free high voltage cable grounding box of claim 2, wherein: connecting wire holes are formed in the connecting pieces (233), and inner side holes of the conducting portions (232) are conical holes.
4. A high voltage cable grounding box capable of opening detection as claimed in claim 3, wherein: the number of the detection holes (21) is 6 or 9.
5. The opening detection free high voltage cable grounding box of claim 4, wherein: the outer sides of all the detection holes (21) are buckled with a protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210706013.5A CN114928009B (en) | 2022-06-21 | 2022-06-21 | High-voltage cable grounding box capable of being free from opening detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210706013.5A CN114928009B (en) | 2022-06-21 | 2022-06-21 | High-voltage cable grounding box capable of being free from opening detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114928009A CN114928009A (en) | 2022-08-19 |
| CN114928009B true CN114928009B (en) | 2023-10-27 |
Family
ID=82814671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210706013.5A Active CN114928009B (en) | 2022-06-21 | 2022-06-21 | High-voltage cable grounding box capable of being free from opening detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114928009B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH541696A (en) * | 1972-04-04 | 1973-09-15 | Ernst Selmoni Ag | Floor box |
| CN205178463U (en) * | 2015-12-15 | 2016-04-20 | 国网浙江省电力公司温州供电公司 | Can switch grounding box with electricity |
| CN106908704A (en) * | 2017-04-18 | 2017-06-30 | 国网江苏省电力公司电力科学研究院 | A kind of servicing unit for switch cubicle midium voltage cable partial discharge detection |
| CN207705747U (en) * | 2018-01-30 | 2018-08-07 | 张军锋 | A kind of cross connection grounding case with local discharge detecting function |
| CN212304610U (en) * | 2020-06-11 | 2021-01-05 | 南团科技江苏有限公司 | Novel three-phase cross interconnection grounding box |
| CN112838557A (en) * | 2021-01-25 | 2021-05-25 | 邵阳学院 | High tension cable line integral type grounding box |
| CN214755464U (en) * | 2021-01-20 | 2021-11-16 | 长缆电工科技股份有限公司 | Cross interconnection box with box opening-free detection function |
-
2022
- 2022-06-21 CN CN202210706013.5A patent/CN114928009B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH541696A (en) * | 1972-04-04 | 1973-09-15 | Ernst Selmoni Ag | Floor box |
| CN205178463U (en) * | 2015-12-15 | 2016-04-20 | 国网浙江省电力公司温州供电公司 | Can switch grounding box with electricity |
| CN106908704A (en) * | 2017-04-18 | 2017-06-30 | 国网江苏省电力公司电力科学研究院 | A kind of servicing unit for switch cubicle midium voltage cable partial discharge detection |
| CN207705747U (en) * | 2018-01-30 | 2018-08-07 | 张军锋 | A kind of cross connection grounding case with local discharge detecting function |
| CN212304610U (en) * | 2020-06-11 | 2021-01-05 | 南团科技江苏有限公司 | Novel three-phase cross interconnection grounding box |
| CN214755464U (en) * | 2021-01-20 | 2021-11-16 | 长缆电工科技股份有限公司 | Cross interconnection box with box opening-free detection function |
| CN112838557A (en) * | 2021-01-25 | 2021-05-25 | 邵阳学院 | High tension cable line integral type grounding box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114928009A (en) | 2022-08-19 |
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Effective date of registration: 20240304 Address after: No. 17 Shiyan Avenue, Yufengshan Town, Yubei District, Chongqing, 401120 (self committed) Patentee after: CHONGQING TAISHAN CABLE Co.,Ltd. Country or region after: China Patentee after: CHONGQING TAISHENG INTELLIGENT ELECTRIC Co.,Ltd. Address before: 401120 No. 17, Shiyan Avenue, Yufengshan Town, Yubei District, Chongqing Patentee before: CHONGQING TAISHAN CABLE Co.,Ltd. Country or region before: China |