CN110581383B - Single-core cable grounding device - Google Patents
Single-core cable grounding device Download PDFInfo
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- CN110581383B CN110581383B CN201910875235.8A CN201910875235A CN110581383B CN 110581383 B CN110581383 B CN 110581383B CN 201910875235 A CN201910875235 A CN 201910875235A CN 110581383 B CN110581383 B CN 110581383B
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- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 87
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000012212 insulator Substances 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract 1
- 230000006698 induction Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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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
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
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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
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
- H01R11/05—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations having different types of direct connections
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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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/36—Conductive members located under tip of screw
- H01R4/363—Conductive members located under tip of screw with intermediate part between tip and conductive member
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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
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
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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
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
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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
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
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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
- 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
- H02G3/081—Bases, casings or covers
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
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- Structural Engineering (AREA)
- Cable Accessories (AREA)
Abstract
The application relates to a single-core cable grounding device. The single-core cable grounding device comprises a box body, a plurality of upstream connecting devices, a plurality of downstream connecting devices and a third connecting device. Each upstream connecting device is used for electrically connecting with an upstream cable metal protective sleeve through a first single-core cable. Each downstream connecting device is used for electrically connecting with a downstream cable metal sheath through a second monocable. The third connecting device is used for connecting with a grounding cable. The operator can carry out cross interconnection and electrical connection on the upstream connecting devices and the downstream connecting devices according to requirements, or directly connect the upstream connecting devices and the downstream connecting devices to the ground respectively. The single-core cable grounding device provides a basic connecting assembly, and an operator changes the connection and adjustment according to the requirement, so that the single-core cable grounding device is applied to different power transmission structures.
Description
Technical Field
The application relates to the technical field of electric power, in particular to a single-core cable grounding device.
Background
The urban power grid generally adopts high-voltage single-core cables to transmit power, when a cable core has current, an induced voltage is generated on a cable metal sheath, and the larger the cable load is, the longer the line is, and the higher the induced voltage is. If the three-phase cable loop is completely symmetrical and the current in the three-phase loop is also completely symmetrical, the voltages induced in the aluminum sheath of the three-phase cable are completely symmetrical, and the vector sum of the voltages is zero.
By utilizing the principle, the three-phase metal sheath cross connection is arranged at the joint position of a longer cable line, and the induction voltage of the whole cross interconnection section is smaller through twice cross connection. The existing cross interconnection grounding box only has a unique wiring mode and does not have a switching and adjusting function.
Disclosure of Invention
Therefore, a single-core cable grounding device is needed to be provided for solving the problems that the existing cross interconnection grounding box only has a unique wiring mode and does not have a function of changing and adjusting.
A single-core cable grounding device comprises a box body, a plurality of upstream connecting devices, a plurality of downstream connecting devices and a third connecting device. The box body is enclosed to form a first space. The plurality of upstream connecting devices are received in the first space. Each of said upstream connecting means is intended to be electrically connected to an upstream cable sheath through a first monocable. The plurality of downstream connecting devices are received in the first space. Each downstream connecting device is used for being electrically connected with a downstream cable metal sheath through a second single-core cable. The third connecting device is accommodated in the first space. The third connecting device is used for grounding, and each upstream connecting device, each downstream connecting device and the third connecting device are arranged at intervals.
In one embodiment, the single core cable grounding device further comprises a first connecting plate and a plurality of insulators. The first connecting plate is received in the first space. The third connecting device is arranged on the first connecting plate and electrically connected with the first connecting plate. The plurality of insulators are accommodated in the first space. The insulators are respectively and fixedly connected between the first connecting plate and the inner wall of the box body.
In one embodiment, the plurality of upstream connecting means are arranged in a row. The single-core cable grounding device further comprises a first insulating plate. The first insulating plate is fixed on the inner wall of the box body, and the upstream connecting devices are respectively fixed on the first insulating plate.
In one embodiment, the plurality of downstream connecting means are arranged in a row. The single-core cable grounding device further comprises a second insulating plate. The second insulating plate is fixed on the inner wall of the box body. The plurality of downstream connecting devices are respectively fixed to the second insulating plate. The first insulating plate and the second insulating plate are arranged in a staggered mode in the first direction a.
In one embodiment, the phase a upstream connecting device includes a first fixed seat, a first sliding block and a first fastening bolt. The first fixed seat is fixed on the first insulating plate. The first fixing seat is provided with a first wiring hole. The first wiring hole is used for accommodating a joint of the first single-core cable. The first fixed seat is provided with a first bolt hole. The first bolt hole is communicated with the first wiring hole. The first slider is disposed in the first wiring hole. And the first fastening bolt is screwed into the first bolt hole and abuts against the first sliding block and is used for pushing the first sliding block to tightly press the joint of the first single-core cable.
In one embodiment, the box includes a plurality of first wire conduits. The plurality of first wire connecting pipes are respectively fixed on the side wall of the box body and are communicated with the first space. The plurality of first wire connecting pipes are arranged in one-to-one correspondence with the plurality of upstream connecting devices. The opening of one of the first wiring holes is opposite to the opening of one of the first wiring tubes. The first single-core cable penetrates through the first wiring pipe and is clamped in the corresponding first wiring hole.
In one embodiment, the box includes a plurality of second wire conduits. The second wiring pipes are respectively fixed on the side wall of the box body and are communicated with the first space. The second junction pipes are arranged in one-to-one correspondence with the downstream connection devices. The second single-core cable penetrates through the second junction tube and is electrically connected with the corresponding downstream connecting device.
In one embodiment, the first and second plurality of wire barrels are secured to the same side wall of the housing.
In one embodiment, the plurality of upstream connection devices include an a-phase upstream connection device, a B-phase upstream connection device, and a C-phase upstream connection device, the plurality of downstream connection devices include an a-phase downstream connection device, a B-phase downstream connection device, and a C-phase downstream connection device, the a-phase upstream connection device is electrically connected to the a-phase downstream connection device, the B-phase upstream connection device is electrically connected to the B-phase downstream connection device, the C-phase upstream connection device is electrically connected to the C-phase downstream connection device, and the plurality of upstream connection devices are respectively electrically connected to the third connection device.
In one embodiment, the single core cable grounding assembly further comprises a second connecting plate, a third connecting plate and a plurality of connecting pieces. The plurality of downstream connecting devices are respectively fixed to the second connecting plate. One end of the third connecting plate is fixedly connected with the second connecting plate, and the other end of the third connecting plate is fixedly connected with the first connecting plate. Each of the upstream connecting means is electrically connected to the first connecting plate through one of the connecting members.
In one embodiment, the single core cable grounding device further comprises a cover body. The cover body and the box body jointly enclose to form the first space.
The application provides single core cable earthing device, including box, a plurality of upstream junction device, a plurality of downstream junction device and third junction device. The box body is enclosed to form a first space. The plurality of upstream connecting means, the plurality of downstream connecting means, and the third connecting means are received in the first space. Each of said upstream connecting means is intended to be electrically connected to an upstream cable sheath through a first monocable. Each downstream connecting device is used for being electrically connected with a downstream cable metal sheath through a second single-core cable. The third connecting device is used for being connected with a grounding cable. The operator can cross-connect and electrically connect the upstream connecting devices and the downstream connecting devices according to the requirement, or directly connect the upstream connecting devices and the downstream connecting devices to the ground respectively. The single-core cable grounding device provides a basic connecting assembly, and an operator changes the connection adjustment according to the requirement, so that the single-core cable grounding device is applied to different power transmission structures.
Drawings
Fig. 1 is an exploded view of the monocable grounding device provided in an embodiment of the present application;
fig. 2 is a block diagram of the monocable grounding device provided in another embodiment of the present application;
fig. 3 is a block diagram of the monocable grounding device provided in another embodiment of the present application;
fig. 4 is an internal structure view of the case provided in an embodiment of the present application.
Reference numerals:
single core cable grounding device 10
Handle 203
Multiple upstream connection devices 300
phase-A upstream connecting device A1
Phase B upstream connecting device B1
C phase upstream connecting device C1
First single core cable 30
Multiple downstream connection devices 400
Phase A downstream connecting device A2
Phase B downstream connecting device B2
C phase downstream connecting device C2
First fixing seat 301
Second single core cable 40
Third connecting device 500
First connecting plate 510
First insulating plate 610
Second insulating plate 620
Second connecting plate 630
Third connecting plate 640
Connecting piece 650
First connecting member A3
Second connecting piece B3
Third connecting part C3
First direction a
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, the single core cable grounding device 10 according to the embodiment of the present application includes a box 20, a plurality of upstream connecting devices 300, a plurality of downstream connecting devices 400, and a third connecting device 500. The case 20 defines a first space 201. The plurality of upstream connecting means 300 are received in the first space 201. Each of said upstream connecting means 300 is intended to be electrically connected to an upstream cable sheath through a first monocable 30. The plurality of downstream connecting means 400 are received in the first space 201. Each of said downstream connecting means 400 is intended to be electrically connected to a downstream cable sheath via a second monocable 40. The third connecting device 500 is received in the first space 201. The third connecting means 500 is used for grounding, and each of the upstream connecting means 300, each of the downstream connecting means 400 and the third connecting means 500 are arranged at intervals.
According to the single-core cable grounding device 10 provided by the embodiment of the application, an operator can perform cross interconnection and electrical connection on the plurality of upstream connecting devices 300 and the plurality of downstream connecting devices 400 according to requirements, or connect the plurality of upstream connecting devices 300 and the plurality of downstream connecting devices 400 to be grounded respectively. Single core cable earthing device 10 provides basic coupling assembling, and operating personnel changes to connect the adjustment according to the demand, makes single core cable earthing device 10 is applied to different transmission structures.
The plurality of upstream connecting means 300, the plurality of downstream connecting means 400 and the third connecting means 500 are all of an electrically conductive material.
In one embodiment, the monocable grounding device 10 further comprises a first connecting plate 510 and a plurality of insulators 520. The first connection plate 510 is received in the first space 201. The third connecting device 500 is disposed on the first connecting plate 510, and the third connecting device 500 is electrically connected to the first connecting plate 510. The plurality of insulators 520 are accommodated in the first space 201. The insulators 520 are respectively fixedly connected between the first connection plate 510 and the inner wall of the box body 20.
The first connection plate 510 is a conductive material. The third connecting device 500 is fixed to the first connecting plate 510 and electrically connected to the first connecting plate 510. The insulator 520 is used for isolating the third connecting device 500 and the first connecting plate 510 from the box body 20, so that the third connecting device 500 and the first connecting plate 510 are prevented from being electrified through the box body 20, and the safety of the single-core cable grounding device 10 is improved.
In one embodiment, the single core cable grounding device 10 includes two insulators 520 fixedly connected between the bottom plate of the box 20 and the first connecting plate 510.
In one embodiment, the plurality of upstream connecting means 300 are arranged in a row. The single core cable grounding device 10 further comprises a first insulating plate 610. The first insulating plate 610 is fixed to an inner wall of the case 20, and the plurality of upstream connecting devices 300 are respectively fixed to the first insulating plate 610.
In one embodiment, the plurality of downstream connection means 400 are arranged in a row. The single core cable grounding device 10 further comprises a second insulating plate 620. The second insulating plate 620 is fixed to an inner wall of the case 20. The plurality of downstream connecting means 400 are fixed to the second insulating plate 620, respectively. The first insulating plate 610 and the second insulating plate 620 are disposed in a staggered manner in the first direction a to ensure that the wiring ports of the downstream connection devices 400 and the upstream connection devices 300 are not blocked. The first single core cable 30 can be inserted into the upstream connecting device 300. The second single core cable 40 can be inserted into the downstream connecting device 400.
In one embodiment, the phase a upstream connection means includes a first fixed seat 301, a first slider 304, and a first fastening bolt 305. The first fixing base 301 is fixed to the first insulating plate 610. The first fixing seat 301 is provided with a first wiring hole 302. The first wiring hole 302 is used for receiving a joint of the first single core cable 30. The first fixing seat 301 is provided with a first bolt hole 303. The first bolt hole 303 is communicated with the first wire connection hole 302. The first slider 304 is disposed in the first wiring hole 302. And a first fastening bolt 305 screwed into the first bolt hole 303, wherein the first fastening bolt 305 presses against the first sliding block 304, and is used for pushing the first sliding block 304 to press the joint of the first single-core cable 30.
The size of the gap between the first slider 304 and the first terminal hole 302 is controlled by screwing the first fastening bolt 305, thereby pressing or loosening the joint of the first single core cable 30.
In one embodiment, the second connecting means 400 comprises the same structure as the first connecting means 300.
The second connecting device 400 includes a second fixing seat, a second slider, and a second fastening bolt. The second fixing seat is fixed on the second insulating plate. The second fixing seat is provided with a second wiring hole. The second wiring hole is used for receiving a joint of the second single core cable 40. And the second fixed seat is provided with a second bolt hole. The second bolt hole is communicated with the second wiring hole. The second slider is disposed in the second wiring hole. And the second fastening bolt is screwed into the second bolt hole and abuts against the second sliding block and is used for pushing the second sliding block to tightly press the joint of the second single-core cable 40. The second fixed seat, the second sliding block and the second fastening bolt are all made of conductive materials.
In one embodiment, the plurality of first connection devices 300 are arranged in an array to form a first connection device row. The plurality of first connecting means 300 are equally spaced apart.
In one embodiment, the plurality of second connection devices 400 are arranged in an array to form a second connection device row. The plurality of second connection means 400 are equally spaced apart.
In one embodiment, the case 20 includes a plurality of first wire barrel 210. The plurality of first wire pipes 210 are fixed to the side walls of the case 20, respectively, and communicate with the first space 201. The plurality of first wire connecting tubes 210 are arranged in one-to-one correspondence with the plurality of upstream connecting devices 300. The mouth of one of the first wire barrel 210 faces the opening of one of the first wire receiving holes 302. The first single core cable 30 passes through the first wiring tube 210 and is clamped in the corresponding first wiring hole 302.
In one embodiment, the case 20 includes a plurality of second wire barrels 220. The second wire connecting pipes 220 are fixed to the side walls of the case 20, respectively, and communicate with the first space 201. The plurality of second wire connecting tubes 220 are provided in one-to-one correspondence with the plurality of downstream connecting devices 400. The second single core cable 40 is electrically connected to the corresponding downstream connecting device 400 through the second junction box 220.
The plurality of first wire connecting pipes 210 and the plurality of second wire connecting pipes 220 may be respectively fixed to different sidewalls of the box body 20 according to actual wiring requirements.
In one embodiment, the first and second wire connecting pipes 210 and 220 are fixed to the same side wall of the box 20, so that the wire connection is facilitated and the working efficiency is improved.
Referring also to FIG. 2, in one embodiment, the plurality of upstream connection devices 300 includes a phase-A upstream connection device A1B phase upstream connecting device B1And phase C upstream connecting device C1The plurality of downstream connection devices 400 includes a phase-A downstream connection device A2B phase downstream connecting device B2And phase C downstream connecting device C2Said phase A upstream connection means A1With said phase A downstream connection means A2Electrical connection, said phase B upstream connection means B1A downstream connection device B with the phase B2Electrical connection, said C phase upstream connection means C1A downstream connection device C with the phase C2And electrically connected, and the plurality of upstream connection devices 300 are electrically connected to the third connection device 500, respectively. At this time, the single core cable grounding device 10 forms a direct grounding structure, and releases the magnetic induction voltage in the first single core cable 30 and the second single core cable 40 to the ground, so as to eliminate the magnetic induction voltage in the first single core cable 30 and the second single core cable 40.
In one embodiment, the single core cable grounding assembly 10 further comprises a second connecting plate 630, a third connecting plate 640, and a plurality of connectors 650. The plurality of downstream connecting means 400 are fixed to the second connecting plates 630, respectively. One end of the third connecting plate 640 is fixedly connected to the second connecting plate 630, and the other end of the third connecting plate 640 is fixedly connected to the first connecting plate 510. Each of the upstream connecting means 300 is electrically connected to the first connecting plate 510 through one of the connectors 650. The second connecting plate 630 third connecting plate 640 and a plurality of connecting piece 650 are the conducting material structure, with first single core cable 30 with magnetic induction voltage in the second single core cable 40 releases to the ground, eliminates first single core cable 30 with magnetic induction voltage in the second single core cable 40.
In one embodiment, the monocable grounding device 10 further comprises a plurality of first protectors. One of the first protection devices is disposed between one of the upstream connection devices 300 and one of the connection members 650, respectively.
In one embodiment, the monocable grounding device 10 further comprises a plurality of second protection devices. The plurality of second protection devices are disposed between the plurality of downstream connection devices 400 and the second connection plate 630 in a one-to-one correspondence.
Referring also to FIG. 3, in one embodiment, the plurality of upstream connection devices 300 includes a phase-A upstream connection device A1B phase upstream connecting device B1And phase C upstream connecting device C1The plurality of downstream connection devices 400 includes a phase-A downstream connection device A2B phase downstream connecting device B2And phase C downstream connecting device C2Said phase A upstream connection means A1A downstream connection device B with the phase B2Electrical connection, said phase B upstream connection means B1A downstream connection device C with the phase C2Electrical connection, said C phase upstream connection means C1With said phase A downstream connection means A2And electrically connected, and the plurality of upstream connection devices 300 are electrically connected to the third connection device 500, respectively. At this time, the single-core cable grounding device 10 forms a cross-connection structure, and mutually cancels out the magnetic induction voltage between the phases in the first single-core cable 30 and the second single-core cable 40.
In one embodiment, the single core cable grounding assembly 10 further comprises a plurality of second connecting plates 630, a plurality of third connecting plates 640, and a plurality of connectors 650. One end of each of the second connection plates 630 is fixedly connected to one of the second connection devices 400. The other end of each of the second connecting plates 630 is connected to one end of one of the third connecting plates 640. The other end of the third connecting plate 640 is connected to the first connecting plate 510.
The plurality of connectors 650 includes a first connector A3Second connecting part B3And a third connecting member C3. The first connecting piece A3Connected to said phase A upstream connection means A by one of said second connection plates 6301A downstream connection device C with the phase C2In the meantime. The second connecting piece B3Connected to said phase B upstream connection means B by one of said second connection plates 6301With said phase A downstream connection means A2In the meantime. The third connecting piece C3Connected to said phase C upstream connection means C by one of said second connection plates 6301With said phase A downstream connection means A2In the meantime.
In the above embodiment, the single core cable grounding device 10 further includes a plurality of the first protection devices. One of the first protection devices is disposed between one of the third connection plates 640 and the first connection plate 510.
Referring to fig. 4, in an embodiment, the single core cable grounding device 10 further includes a cover 202. The cover 202 and the box 20 together form the first space 201.
In one embodiment, the housing 20 includes an opening with a flange structure disposed at the opening. The flange structure is provided with a plurality of bolt holes. The cover 202 is correspondingly provided with a plurality of threaded holes. The cover 202 is fixed to the case 20 by screwing a plurality of bolts into the corresponding bolt holes.
In one embodiment, the monocable grounding device 10 further comprises a sealing ring 204. A sealing groove is formed in the end face of the opening of the box body 20, and the sealing ring 204 is disposed in the sealing groove to seal a gap between the box body 20 and the cover body 202.
In one embodiment, the single core cable grounding device 10 further comprises a handle 203, and the handle 203 is disposed on the surface of the cover 202 away from the box body 20, so as to facilitate taking and placing of the single core cable grounding device 10.
In one embodiment, insulator mounts 205 are provided on the bottom of the housing 20. The insulator fixing member 205 is provided with a fixing hole, and one end of the insulator extends into the fixing hole.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-described examples merely represent several embodiments of the present application and are not to be construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A single core cable grounding device, comprising:
a box body (20) which forms a first space (201) in a surrounding way;
a plurality of upstream connecting means (300) housed in said first space (201), each of said upstream connecting means (300) being adapted to be electrically connected to an upstream cable metal sheath by means of a first single core cable (30), said plurality of upstream connecting means (300) comprising a phase a upstream connecting means, a phase B upstream connecting means and a phase C upstream connecting means, said plurality of upstream connecting means (300) being arranged in a row;
a plurality of downstream connecting means (400) housed in the first space (201), each of the downstream connecting means (400) being for electrically connecting with a downstream cable metal sheath through a second single core cable (40), the plurality of downstream connecting means (400) including an a-phase downstream connecting means, a B-phase downstream connecting means, and a C-phase downstream connecting means, the a-phase upstream connecting means being electrically connected with the a-phase downstream connecting means, the B-phase upstream connecting means being electrically connected with the B-phase downstream connecting means, the C-phase upstream connecting means being electrically connected with the C-phase downstream connecting means, or making the single core cable grounding means form a cross-connection structure: the phase A upstream connecting means is electrically connected to the phase B downstream connecting means, the phase B upstream connecting means is electrically connected to the phase C downstream connecting means, the phase C upstream connecting means is electrically connected to the phase A downstream connecting means, and the plurality of downstream connecting means (400) are arranged in a line;
a first insulating plate (610) fixed to an inner wall of the case (20), the plurality of upstream connecting means (300) being fixed to the first insulating plate (610), respectively; a third connecting device (500) received in the first space (201), the third connecting device (500) being used for grounding, each upstream connecting device (300), each downstream connecting device (400) and the third connecting device (500) being provided with a plurality of upstream connecting devices (300) at intervals and being electrically connected with the third connecting device (500) respectively;
the second insulating plate (620) is fixed on the inner wall of the box body (20), the downstream connecting devices (400) are respectively fixed on the second insulating plate (620), and the first insulating plate (610) and the second insulating plate (620) are arranged in a staggered mode in the first direction a.
2. The monocable grounding device of claim 1, further comprising:
a first connection plate (510) received in the first space (201), the third connection device (500) being disposed on the first connection plate (510), and the third connection device (500) being electrically connected to the first connection plate (510);
and a plurality of insulators (520) accommodated in the first space (201), wherein the plurality of insulators (520) are respectively fixedly connected between the first connection plate (510) and an inner wall of the box body (20).
3. A monocable earthing device according to claim 1, characterized in that said upstream connection means (300) comprise:
the first fixing seat (301) is fixed to the first insulating plate (610) and provided with a first wiring hole (302), the first wiring hole (302) is used for accommodating a joint of the first single-core cable (30), the first fixing seat (301) is provided with a first bolt hole (303), and the first bolt hole (303) is communicated with the first wiring hole (302);
a first slider (304) provided to the first wiring hole (302);
the first fastening bolt (305) is screwed into the first bolt hole (303), and the first fastening bolt (305) is pressed against the first sliding block (304) and used for pushing the first sliding block (304) to press the joint of the first single-core cable (30).
4. A monocable earthing device according to claim 3, characterized in that said box (20) comprises:
a plurality of first wire barrel (210), a plurality of first wire barrel (210) are fixed in respectively the lateral wall of box (20), and with first space (201) intercommunication, a plurality of first wire barrel (210) with a plurality of upper reaches connecting device (300) one-to-one sets up, one the mouth of pipe of first wire barrel (210) is just to one the opening of first wiring hole (302), first single core cable (30) pass first wire barrel (210) joint in corresponding first wiring hole (302).
5. A single core cable grounding device as claimed in claim 4, wherein said case (20) comprises:
a plurality of second wire barrel (220), a plurality of second wire barrel (220) are fixed in respectively box (20) lateral wall, and with first space (201) intercommunication, a plurality of second wire barrel (220) with a plurality of downstream connecting device (400) one-to-one set up, second single core cable (40) pass second wire barrel (220) and corresponding downstream connecting device (400) electricity is connected.
6. A single core cable grounding device as claimed in claim 5, wherein said plurality of first terminal tubes (210) and said plurality of second terminal tubes (220) are respectively fixed to the same side wall of said case (20).
7. The monocable grounding device of claim 2, further comprising:
a second connecting plate (630), the plurality of downstream connecting devices (400) being respectively fixed to the second connecting plate (630);
one end of the third connecting plate (640) is fixedly connected with the second connecting plate (630), and the other end of the third connecting plate (640) is fixedly connected with the first connecting plate (510);
a plurality of connectors (650), each of the upstream connection devices (300) being electrically connected to the first connection plate (510) through one of the connectors (650).
8. The monocable grounding device of claim 1, further comprising:
the cover body (202) and the box body (20) jointly form the first space (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875235.8A CN110581383B (en) | 2019-09-17 | 2019-09-17 | Single-core cable grounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875235.8A CN110581383B (en) | 2019-09-17 | 2019-09-17 | Single-core cable grounding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110581383A CN110581383A (en) | 2019-12-17 |
| CN110581383B true CN110581383B (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910875235.8A Active CN110581383B (en) | 2019-09-17 | 2019-09-17 | Single-core cable grounding device |
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| CN112216999B (en) * | 2020-08-31 | 2021-11-02 | 国网山东省电力公司枣庄供电公司 | Cable cross section sinle silk earthing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201038349Y (en) * | 2007-04-04 | 2008-03-19 | 长沙电缆附件有限公司 | High voltage single core power cable grounding device |
| CN204190345U (en) * | 2014-09-25 | 2015-03-04 | 江苏远航电缆附件有限公司 | 110kV and the cross interconnected protective earthing case of above band detection of electrical leakage type |
| CN207705747U (en) * | 2018-01-30 | 2018-08-07 | 张军锋 | A kind of cross connection grounding case with local discharge detecting function |
| CN209389633U (en) * | 2018-08-29 | 2019-09-13 | 深圳供电局有限公司 | Cross interconnection case grounding box of easy-to-open case lid |
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