CN114928009A - High-voltage cable grounding box capable of being free of opening detection - Google Patents
High-voltage cable grounding box capable of being free of opening detection Download PDFInfo
- Publication number
- CN114928009A CN114928009A CN202210706013.5A CN202210706013A CN114928009A CN 114928009 A CN114928009 A CN 114928009A CN 202210706013 A CN202210706013 A CN 202210706013A CN 114928009 A CN114928009 A CN 114928009A
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- box
- insulating
- conductor
- voltage cable
- sheath
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 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
- 238000012360 testing method Methods 0.000 claims abstract description 18
- 239000011241 protective layer Substances 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000011218 segmentation Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 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
- 238000007789 sealing Methods 0.000 description 1
Images
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
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- 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 of opening detection. The invention discloses a high-voltage cable grounding box capable of being free of opening detection, which comprises a box body, wherein a box cover is arranged on the box body; a sheath protector and a conductor connecting seat are arranged in the box body, a first aluminum row is arranged between the sheath protector and the conductor connecting seat, and the conductor connecting seat is connected with a cable led in from the outside of the box; the protective layer protector and the conductor connecting seat are connected with a test outgoing line, the box cover is provided with a detection hole connected with the test outgoing line, the box cover is also provided with a knob switch which can be positioned to connect or disconnect the conduction between the conductors, and the knob switch is connected with the conductor connecting seat. The invention aims to solve the technical problem of developing a high-voltage cable grounding box which can directly detect the connection and disconnection of conductors in a control box without opening the box.
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 of opening detection.
Background
In the transmission cable of the power system, in order to ensure the reliable operation of the cable, the power failure detection of the high-voltage cable needs to be periodically carried out, and the main insulation, the metal sheath and the sheath protector of the cable need to be detected according to the requirements of QGDW 11316-2014 power cable line test regulations and GB50150-2016 electrical device installation engineering electrical equipment handover test standards.
According to the existing high-voltage cable detection scheme, a high-voltage cable grounding box needs to be opened during detection, and an aluminum bar between an inner conductor and the ground and between an outer conductor and the ground is disconnected. However, in a cable line, a high-voltage cable grounding box is generally installed in a cable tunnel, an urban comprehensive pipe gallery and a cable joint well, so that operation detection of a cable is mostly performed in a narrow and closed space, and it is particularly inconvenient to open the grounding box and perform a series of detection operations. In addition, the high-voltage cable accessory box is long in assembling and disassembling time, accidents are easy to happen, and the sealing performance of the grounding box is easy to damage due to repeated assembly.
Therefore, those skilled in the art have been devoted to developing a grounding box for high-voltage cables, which can directly detect the connection and disconnection of conductors in the box without opening the box.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the invention discloses a high-voltage cable grounding box capable of being free from opening detection, and aims to provide a high-voltage cable grounding box capable of directly detecting by controlling the connection and disconnection of conductors in the box without opening the box.
In order to achieve the purpose, the invention provides a high-voltage cable grounding box capable of being free of opening detection, which comprises a box body, wherein a box cover is arranged on the box body; a sheath protector and a conductor connecting seat are arranged in the box body, a first aluminum row is arranged between the sheath protector and the conductor connecting seat, and the conductor connecting seat is connected with a cable led in from the outside of the box; the protective layer protector and the conductor connecting seat are connected with test outgoing lines, the box cover is provided with a detection hole connected with the test outgoing lines, the box cover is further provided with a knob switch capable of connecting or disconnecting the power-on between the 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 sheath protectors and the conductor connecting seats are installed on the insulating support plate, a grounding backflow bar is connected between the sheath protectors, and the grounding backflow bar is connected with a grounding end.
Preferably, the insulating support plate comprises a first support plate and a second support plate, the sheath 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 bar 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 breaking connecting piece is arranged on the insulating connecting rod; one end of the insulating connecting rod is provided with an operating knob, the other end of the insulating connecting rod is rotatably connected with the conductor connecting seat, and the operating knob is arranged on the outer side of the box cover.
Preferably, the disconnecting piece is located between the first aluminum row and the second aluminum row, 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 in an inscribed mode, the connecting sleeve comprises an insulating part and a conductive part, the insulating part is in threaded connection with the insulating sheath, and a connecting sheet is arranged on the conductive part.
Preferably, the connecting piece is provided with a connecting hole, and the inner hole of the conductive part is a tapered hole.
Preferably, the number of the detection holes is 6 or 9.
Preferably, all the outer sides of the detection holes are buckled with protective covers.
The invention has the beneficial effects that:
through increasing knob switch, disconnection and the closure of the connection between the various conductors in the control ground connection incasement, can segment the various conductors of incasement, and through all set up the test lead-out wire on sheath protector and conductor connecting seat and increase the test hole on the case lid, can carry out the segmentation with the conductor of different districts through the test lead-out wire and draw out the detection, thereby realized not opening ground connection case and not carrying out under the condition that the interior assembly dismantlement (like the disconnection of aluminium row) each part segmentation such as sheath protector, cable metal sheath detects, and then ensured the safety of fortune inspector, the cable detection efficiency has been improved, and still protected high tension cable ground connection case's leakproofness, the life of ground connection case has been improved.
Drawings
FIG. 1 is a schematic structural view of a cabinet according to a first embodiment of the present invention;
FIG. 2 is a schematic view of a cover according to a first embodiment of the present invention;
FIG. 3 is a schematic structural view of a cabinet according to a second embodiment of the present invention;
FIG. 4 is a schematic view of a cover according to a second embodiment of the present invention;
FIG. 5 is a schematic structural view of a casing according to a third embodiment of the present invention;
FIG. 6 is a schematic view of the structure of a cover according to a third embodiment of the present invention;
FIG. 7 is a schematic view of the knob switch of the present invention;
FIG. 8 is a schematic structural view showing a use state of the rotary switch according to the present invention;
FIG. 9 is a schematic structural view showing a use state of the rotary switch according to the present invention;
FIG. 10 is a schematic cross-sectional view of a detection well according to the present invention.
In the drawings, wherein: 1. a box body; 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 bar; 17. a ground terminal; 18. a second aluminum row; 2. a box cover; 21. detecting holes; 22. an insulating sheath; 23. connecting sleeves; 231. an insulating section; 232. a conductive portion; 233. connecting sheets; 3. a knob switch; 31. an insulating connecting rod; 32. breaking the connecting piece; 321. an insulating block; 322. a conductor block; 33. an operation knob; 4. an electrical cable.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, wherein the terms "upper", "lower", "left", "right", "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular 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 free of opening detection, which comprises a box body 1, wherein a box cover 2 is arranged on the box body 1; a sheath protector 12 and a conductor connecting seat 13 are arranged in the box body 1, a first aluminum row 11 is arranged between the sheath protector 12 and the conductor connecting seat 13, and the conductor connecting seat 13 is connected with a cable 4 led in from the outside of the box; the sheath 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-on between the 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, sheath protectors 12 and conductor connecting seats 13 are arranged on the insulating support plate 15, a grounding backflow bar 16 is connected between the sheath protectors 12, and the grounding backflow bar 16 is connected with a grounding end 17. Further, the insulating support plate 15 includes a first support plate 151 and a second support plate 152, the sheath protector 12 is disposed on the first support plate 151, and the conductor connecting seat 13 is disposed on the second support plate 152.
In this embodiment, through increasing rotary switch 3, the disconnection and the closure of the connection between the various conductors in the control ground connection incasement, can segment the various conductors of incasement, and through all set up test lead-out wire 14 and increase the test hole on case lid 2 on sheath protector 12 and conductor connecting seat 13, can carry out the segmentation with the conductor of different sections through test lead-out wire 14 and draw out the detection, thereby realized not opening ground connection case and not carrying out each part segmentation such as internal assembly dismantlement (like the disconnection of aluminium bar) under to sheath protector 12, each part segmentation of cable 4 metal sheath detects, and then ensured the safety of fortune inspector, improved cable 4 detection efficiency, and still protected the leakproofness of high tension cable 4 ground connection case, the life of ground connection case has been improved.
As shown in fig. 7, which is a schematic structural diagram of the rotary switch 3 of the present invention, the rotary switch 3 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 a thickness of the conductor block 322 may be greater than a thickness of the insulating block 321. One end of the insulating connecting rod 31 is provided with an operating knob 33, the other end of the insulating connecting rod 31 is rotatably connected with the conductor connecting seat 13, and the operating knob 33 is arranged on the outer side of the box cover 2. By turning the operating knob 33 on the cover 2, the conductor block 322 can be brought into or out of contact with the conductors in the box, thereby controlling the opening and closing of the connections between the various conductors in the grounding box.
As shown in fig. 10, which is a schematic cross-sectional structure diagram of the inspection hole 21 of the present invention, an insulating sheath 22 is clamped in the inspection hole 21, a connecting sleeve 23 is connected in the insulating sheath 22, the connecting sleeve 23 includes an insulating portion 231 and a conductive portion 232, the insulating portion 231 is connected with the insulating sheath 22 by a screw thread, and the conductive portion 232 is provided with a connecting piece 233. Meanwhile, a connection hole is formed in the connection piece 233, and the connection is performed by passing the end of the test lead 14 through the connection wire. The inner hole of the conductive part 232 is a tapered hole, so that the detection probe inserted into the hole can be conveniently connected with the conductive part 232 during detection. In order to prevent rain and dust, the outer sides of all the detection holes 21 are buckled with protective covers, and in order to facilitate operation, the box cover 2 is further provided with characters for opening and closing.
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 a direct grounding case, and the number of detection holes 21 is 6.
As shown in fig. 3 and 4, which are schematic structural diagrams of a box body 1 according to a second embodiment of the present invention, which is a protective grounding box, the conductor connecting seat 13 includes an inner conductor holder 131 and an outer conductor holder 132, both the inner conductor holder 131 and the outer conductor holder 132 are disposed on the second supporting 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 to the cable 4. As shown in fig. 8 and 9, a disconnection 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 detection holes 21 is 9.
As shown in fig. 5 and fig. 6, which are schematic structural diagrams of a case 1 according to a third embodiment of the present invention, which is a cross-connected grounding case, the conductor connecting seat 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 the second supporting 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 to the cable 4. As shown in fig. 8 and 9, the disconnecting member 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 detection holes 21 is 9.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a can exempt from to open high tension cable grounding box who detects which characterized in that: the box body (1) is provided with a box cover (2); a sheath protector (12) and a conductor connecting seat (13) are arranged in the box body (1), a first aluminum bar (11) is arranged between the sheath protector (12) and the conductor connecting seat (13), 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 connected with a test leading-out wire (14), a detection hole (21) connected with the test leading-out wire (14) is formed in the case cover (2), a knob switch (3) capable of connecting or disconnecting the conduction between the conductors in the case is further arranged on the case cover (2), and the knob switch (3) is connected with the conductor connecting seat (13).
2. The opening detection free high voltage cable grounding box of claim 1, wherein: the improved cable connector is characterized in that an insulating support plate (15) is arranged in the box body (1), the insulating support plate (15) is provided with the sheath protectors (12) and the conductor connecting seats (13), a grounding backflow bar (16) is connected between the sheath protectors (12), and the grounding backflow bar (16) is connected with a grounding end (17).
3. The opening detection free high voltage cable grounding box of claim 2, wherein: insulating backup pad (15) include first backup pad (151) and second backup pad (152), set up on first backup pad (151) sheath protector (12), set up on second backup pad (152) conductor connecting seat (13).
4. The opening detection free high voltage cable grounding box of claim 3, wherein: 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 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 the outer conductor clamping seat (132) is connected with the cable (4).
5. The opening detection free high voltage cable grounding box of claim 4, wherein: the knob switch (3) comprises an insulating connecting rod (31), and a breaking connecting piece (32) is arranged on the insulating connecting rod (31); one end of the insulating connecting rod (31) is provided with an operating knob (33), the other end of the insulating connecting rod (31) is rotatably connected with the conductor connecting seat (13), and the operating knob (33) is arranged on the outer side of the box cover (2).
6. The opening detection free high voltage cable grounding box of claim 5, wherein: the breaking-connecting piece (32) is located between the second aluminum row (18) and the first aluminum row (11), the breaking-connecting piece (32) is circular, and the breaking-connecting piece (32) comprises a fan-shaped insulating block (321) and a fan-shaped conductor block (322).
7. The high voltage cable grounding box of claim 3, wherein: the inside callipers of inspection hole (21) is equipped with insulating sheath (22), insulating sheath (22) inscription has adapter sleeve (23), adapter sleeve (23) are including insulating portion (231) and conductive part (232), insulating portion (231) and insulating sheath (22) threaded connection, be equipped with connection piece (233) on conductive part (232).
8. The opening detection free high voltage cable grounding box of claim 7, wherein: the connecting sheet (233) is provided with a connecting wire hole, and the inner side hole of the conductive part (232) is a tapered hole.
9. The opening detection free high voltage cable grounding box of claim 8, wherein: the number of the detection holes (21) is 6 or 9.
10. The opening detection free high voltage cable grounding box of claim 9, wherein: and protective covers are buckled on the outer sides of all the detection holes (21).
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 true CN114928009A (en) | 2022-08-19 |
| CN114928009B CN114928009B (en) | 2023-10-27 |
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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 |
|---|---|
| CN114928009B (en) | 2023-10-27 |
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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 |
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