CN110601126B

CN110601126B - Connecting box for single-core cable inlet wire

Info

Publication number: CN110601126B
Application number: CN201910875244.7A
Authority: CN
Inventors: 陈腾彪
Original assignee: Shenzhen Power Supply Co ltd
Current assignee: Shenzhen Power Supply Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2021-01-29
Anticipated expiration: 2039-09-17
Also published as: CN110601126A

Abstract

The application relates to a connecting box for single-core cable inlet wires. The connecting box for the single-core cable inlet wire comprises a box body, a first connecting device row, a second connecting device row, a third connecting device row and a grounding connecting device. According to the requirement of power transmission engineering, a user can selectively electrically connect one or more of the first connecting device column, the second connecting device column and the third connecting device column with the grounding connecting device so as to realize grounding connection of one or more of the upstream cable metal protective sleeve, the first downstream cable metal sheath and the second downstream cable metal sheath. A connecting box for single core cable inlet wire provides basic coupling assembling, and operating personnel changes to connect the adjustment according to the demand, makes a connecting box for single core cable inlet wire is applied to different transmission of electricity structures.

Description

Connecting box for single-core cable inlet wire

Technical Field

The application relates to the technical field of electric power, especially relate to a connecting box for single core cable inlet wire.

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 the longer cable line, and the induced voltage of the whole cross interconnection section is smaller through pairwise cross connection. In a power transmission project, a power shunt phenomenon occurs. Such as one upstream power transmission cable electrically connected to two downstream power transmission cables. The existing cross interconnection grounding box has a unique wiring mode and cannot be subjected to wiring adjustment as required.

Disclosure of Invention

Therefore, the connection box for the incoming line of the single-core cable is needed to be provided aiming at the problems that the existing cross interconnection grounding box has a unique wiring mode and cannot perform wiring adjustment according to requirements.

A connecting box for a single-core cable inlet wire comprises a box body, a first connecting device row, a second connecting device row, a third connecting device row and a grounding connecting device.

The box body is enclosed to form a first space. The first connecting device row is received in the first space. The first array of connection means comprises a plurality of first connection means. The plurality of first connecting devices are arranged at intervals. Each of said first connecting means is intended to be electrically connected to an upstream cable sheath through a first monocable. The second connecting device row is accommodated in the first space. The first connecting device row and the second connecting device row are arranged in a parallel staggered mode. The second connection means column comprises a plurality of second connection means. The plurality of second connecting devices are arranged at intervals, and each second connecting device is used for being electrically connected with a first downstream cable metal sheath through a second single-core cable.

The third connecting device row is accommodated in the first space. The third connecting device row is arranged on one side, away from the first connecting device row, of the second connecting device row, and the third connecting device row and the second connecting device row are arranged in parallel. The third connecting means column comprises a plurality of third connecting means. The plurality of third connecting devices are arranged at intervals. Each of said third connecting means is intended to be electrically connected to a second downstream cable sheath through a third monocable. The plurality of second connecting devices are electrically connected with the plurality of third connecting devices in a one-to-one correspondence mode.

The ground connection device is accommodated in the first space. The grounding connecting device is arranged between the third connecting device row and the side wall of the box body, and the grounding connecting device and the third connecting device row are arranged along the first direction in a staggered mode. The grounding connecting device is used for being connected with a grounding cable.

In one embodiment, the connection box for the single-core cable inlet wire further comprises a first connection plate and a plurality of insulators. The first connecting plate is received in the first space. The grounding connection device is arranged on the first connection plate and electrically connected with the first connection plate. The insulators are accommodated in the first space and fixedly connected between the first connecting plate and the box body respectively. The plurality of insulators and the plurality of third connecting devices are arranged along a second direction in a staggered mode, and the first direction is perpendicular to the second direction.

In one embodiment, the connection box for the single-core cable inlet wire further comprises a first insulating plate. The first insulating plate is accommodated in the first space and fixed to the inner wall of the box body. The plurality of first connecting devices are respectively fixed on the first insulating plate.

In one embodiment, the connection box for the single-core cable inlet wire further comprises a second insulating plate. The second insulating plate is accommodated in the first space and fixed to the inner wall of the box body. The plurality of second connecting means and the plurality of third connecting means are fixed to the second insulating plate, respectively.

In one embodiment, the first connecting device comprises 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.

The first fastening bolt is screwed into the first bolt hole. The first fastening bolt is pressed against the first sliding block. The first fastening bolt is used for pushing the first sliding block to press the joint of the first single-core cable tightly.

In one embodiment, the box includes a first sidewall and the box includes a plurality of first patch tubes. The plurality of first wire connecting pipes are respectively fixed on the first side wall and communicated with the first space. The first wire connecting tubes and the first connecting devices are arranged in one-to-one correspondence. 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 plurality of second wire connecting pipes are respectively fixed to the first side wall, and are communicated with the first space. The second wire connecting tubes and the second connecting devices are arranged in one-to-one correspondence. The second single-core cable penetrates through the second junction tube and is electrically connected with the corresponding second connecting device.

In one embodiment, the box includes a second sidewall. The second side wall with the first side wall sets up relatively, the box includes a plurality of third wire barrel. The plurality of third wire connecting pipes are respectively fixed to the second side wall, and are communicated with the first space. The plurality of third wire connecting pipes and the plurality of third connecting devices are arranged in a one-to-one correspondence manner. The third single-core cable penetrates through one third junction tube and is electrically connected with the corresponding third connecting device.

In one embodiment, the plurality of first connecting means are electrically connected to the ground connecting means, respectively.

In one embodiment, the plurality of first connection devices includes a first phase first connection device, a second phase first connection device, and a third phase first connection device. The plurality of second connection devices includes a first phase second connection device, a second phase second connection device, and a third phase second connection device. The plurality of third connection devices includes a first phase third connection device, a second phase third connection device, and a third phase third connection device. The first phase second connecting device is electrically connected with the first phase third connecting device. The second phase second connecting device is electrically connected with the second phase third connecting device. The third phase second connecting device is electrically connected with the third phase third connecting device. The first phase first connecting device is electrically connected with the third phase third connecting device. The second phase first connecting device is electrically connected with the first phase third connecting device. The third phase first connecting device is electrically connected with the second phase third connecting device.

In one embodiment, the connection box for the single-core cable inlet wire further comprises a cover body. The cover body and the box body jointly enclose to form the first space.

The embodiment of the application provides a connecting box for single core cable inlet wire includes box, first connecting device row, second connecting device row, third connecting device row and ground connection device. The box body is enclosed to form a first space. The first, second, third and ground connection means are accommodated in the first space. The first connecting device array comprises a plurality of first connecting devices which are arranged at intervals. Each of said first connecting means is intended to be electrically connected to an upstream cable sheath through a first monocable.

The first connecting device row and the second connecting device row are parallel and arranged along a first direction in a staggered mode. The second connection means column comprises a plurality of second connection means. The plurality of second connecting devices are arranged at intervals. Each of the second connecting means is adapted to be electrically connected to a first downstream cable metal sheath via a second monocable. The third connecting device row is arranged on one side, away from the first connecting device row, of the second connecting device row, and the third connecting device row and the second connecting device row are arranged in parallel. The third connecting means column comprises a plurality of third connecting means. The plurality of third connecting devices are arranged at intervals. Each third connecting device is used for being electrically connected with a second downstream cable metal sheath through a third single-core cable, and the plurality of second connecting devices are electrically connected with the plurality of third connecting devices in a one-to-one correspondence mode. The grounding connecting device is arranged between the third connecting device row and the side wall of the box body, and the grounding connecting device and the third connecting device row are arranged along the first direction in a staggered mode. The grounding connecting device is used for being connected with a grounding cable.

According to the requirement of power transmission engineering, a user can selectively electrically connect one or more of the first connecting device column, the second connecting device column and the third connecting device column with the grounding connecting device so as to realize grounding connection of one or more of the upstream cable metal protective sleeve, the first downstream cable metal sheath and the second downstream cable metal sheath. A connecting box for single core cable inlet wire provides basic coupling assembling, and operating personnel changes to connect the adjustment according to the demand, makes a connecting box for single core cable inlet wire is applied to different transmission of electricity structures.

Drawings

Fig. 1 is an exploded view of the structure of the connection box for a single-core cable inlet provided in an embodiment of the present application;

fig. 2 is an internal structure view of the connection box for single-core cable incoming lines provided in an embodiment of the present application;

FIG. 3 is a front view of the first coupling device as provided in another embodiment of the present application;

fig. 4 is a block diagram of the connection box for the incoming single-core cable provided in another embodiment of the present application;

fig. 5 is a block diagram of the connection box for a single core cable incoming line provided in another embodiment of the present application.

Reference numerals:

connecting box 10 for single-core cable inlet wire

Case 20

First space 201

Cover 202

Handle 203

Sealing ring 204

First side wall 101

Second side wall 102

Third connecting member 103

Protective device 104

First wire barrel 210

Second wire barrel 220

Third wire barrel 230

First connecting means row 30

First Single core Cable 300

First connecting device 310

First fixing seat 311

First wiring hole 312

First bolt hole 313

First slider 314

First fastening bolt 315

First insulating plate 320

Second connecting means row 40

Second single core cable 400

Second connecting device 410

Second insulating plate 420

Third connecting means row 50

Third connecting means 510

Third single core cable 500

Ground connection device 60

First connection plate 610

Insulator 620

First direction a

Second direction b

First phase first connecting device A₁

Second phase first connecting device B₁

Third phase first connecting means C₁

First phase second connecting device A₂

Second phase second connecting device B₂

Third phase second connecting means C₂

First phase third connecting device A₃

Second phase third connecting device B₃

Third phase third connecting device C₃

First phase first connecting piece A₄

Second phase first connecting member B₄

Third phase first connecting member C₄

First phase second connecting piece A₅

Second phase second connecting piece B₅

Third phase second connecting piece C₅

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 and 2, a connection box 10 for single-core cable incoming lines according to an embodiment of the present disclosure includes a box body 20, a first connection device array 30, a second connection device array 40, a third connection device array 50, and a ground connection device 60.

The case 20 defines a first space 201. The first row of connecting means 30 is received in the first space 201. The first array of connection means 30 comprises a plurality of first connection means 310. The plurality of first connecting means 310 are arranged at intervals. Each of said first connecting means 310 is intended to be electrically connected to an upstream cable metal sheath through a first monocable 300. The second connecting device row 40 is received in the first space 201. The first connecting device row 30 and the second connecting device row 40 are arranged in parallel and in a staggered manner. The second connecting means column 40 comprises a plurality of second connecting means 410. The plurality of second connecting means 410 are arranged at intervals, and each of the second connecting means 410 is used for electrically connecting with a first downstream cable metal sheath through a second single core cable 400.

The third connecting device row 50 is received in the first space 201. The third connecting device row 50 is disposed on a side of the second connecting device row 40 away from the first connecting device row 30, and the third connecting device row 50 is disposed in parallel with the second connecting device row 40. The third connecting means column 50 comprises a plurality of third connecting means 510. The plurality of third connecting means 510 are arranged at intervals. Each of said third connecting means 510 is intended to be electrically connected to a second downstream cable sheath through a third monocable 500. The plurality of second connecting means 410 are electrically connected to the plurality of third connecting means 510 in a one-to-one correspondence.

The ground connecting device 60 is received in the first space 201. The ground connection devices 60 are disposed between the third connection device row 50 and the sidewall of the box 20, and the ground connection devices 60 and the third connection device row 50 are disposed in a staggered manner along the first direction. The ground connection 60 is used for connecting with a ground cable.

The embodiment of the application provides a connecting box 10 for single core cable inlet wire, according to the transmission engineering demand, the user can be selective with first connecting device is listed as 30 second connecting device is listed as 40 in the third connecting device is listed as 50 one or several with ground connection device 60 electricity is connected, in order to realize the upper reaches cable metal sheath first downstream cable metal sheath one or several ground connection in the second downstream cable metal sheath. A connecting box 10 for single core cable inlet wire provides basic coupling assembling, and operating personnel changes to connect the adjustment according to the demand, makes connecting box 10 for single core cable inlet wire is applied to different transmission of electricity structures.

In the above embodiments, the plurality of first connecting means 310, the plurality of second connecting means 410 and the plurality of third connecting means 510 are all made of conductive materials.

In one embodiment, the plurality of second connecting means 410 are fixedly connected with the plurality of third connecting means 510 in a one-to-one correspondence. One of the second connecting means 410 and one of the third connecting means 510 may be an integral structure, or may be a split structure, and then are electrically connected to each other.

In one embodiment, the connection box 10 for a single-core cable inlet comprises a first side wall 101, and the first connection device column 30 and the second connection device column 40 are arranged at a distance from the projection of the first side wall 101.

In one embodiment, the connection box 10 for single conductor cable entries further comprises a second side wall 102. The second sidewall 102 is spaced apart from and opposite to the first sidewall 101. The third connecting means row 50 is spaced from the projection of the ground connecting means 60 on the second side wall 102.

In one embodiment, the connection box 10 for a single core cable inlet further comprises a first connection plate 610 and a plurality of insulators 620. The first connecting plate 610 is received in the first space 201. The ground connecting device 60 is disposed on the first connecting plate 610, and the ground connecting device 60 is electrically connected to the first connecting plate 610. The plurality of insulators 620 are accommodated in the first space 201, and are respectively fixedly connected between the first connection plate 610 and the case 20. The plurality of insulators 620 and the plurality of third connecting devices 510 are disposed along a second direction in a staggered manner, and the first direction is perpendicular to the second direction. The plurality of insulators 620 and the plurality of third connecting devices 510 are arranged at intervals in a projection toward the second side 203. The insulators 620 are used for avoiding the first connecting device array 30, the second connecting device array 40 and the third connecting device array 50 from contacting the box body 20, so that the box body 20 is electrified, and the safety of the connecting box 10 for single-core cable incoming lines is improved.

In one embodiment, the connection box 10 for a single core cable inlet further comprises a first insulating plate 320. The first insulating plate 320 is received in the first space 201 and fixed to an inner wall of the case 20. The first connecting devices 310 are respectively fixed to the first insulating plate 320. The first insulating plate 320 prevents the plurality of first connecting means 310 from being conducted with each other.

In one embodiment, the connection box 10 for the single conductor cable inlet further comprises a second insulating plate 420. The second insulating plate 420 is received in the first space 201 and fixed to an inner wall of the case 20. The plurality of second connecting means 410 and the plurality of third connecting means 510 are fixed to the second insulating plate 420, respectively. The second insulating plate 420 prevents the plurality of second connecting means 410 from being conducted with each other.

Referring to fig. 3, in one embodiment, the first connecting device 310 includes a first fixing seat 311, a first sliding block 314, and a first fastening bolt 315. The first fixing base 311 is fixed to the first insulating plate 320. The first fixing base 311 is provided with a first wiring hole 312. The first wiring hole 312 is used for receiving a joint of the first single core cable 300. The first fixing seat 311 is provided with a first bolt hole 313. The first bolt hole 313 is communicated with the first wire connection hole 312. The first slider 314 is disposed at the first wiring hole 312. The first fastening bolt 315 is screwed into the first bolt hole 313. The first fastening bolt 315 presses against the first slider 314. The first fastening bolt 315 is used to push the first sliding block 314 to press the joint of the first single core cable 300.

In one embodiment, the second connecting device 410 includes a second fixed seat, a second sliding block 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 400. 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. The second fastening bolt is screwed into the second bolt hole. The second fastening bolt is pressed against the second sliding block. The second fastening bolt is used for pushing the second sliding block to press the joint of the second single-core cable 400 tightly.

In one embodiment, the third connecting device 510 includes a third fixing seat, a third sliding block and a third fastening bolt. The third fixing seat is fixed on the third insulating plate. And the third fixing seat is provided with a third wiring hole. The third wiring hole is used for receiving a joint of the third single core cable 500. And the third fixing seat is provided with a third bolt hole. The third bolt hole is communicated with the third wiring hole. The third slider is disposed in the third wiring hole. The third fastening bolt is screwed into the third bolt hole. The third fastening bolt is pressed against the third sliding block. The third fastening bolt is used for pushing the third sliding block to press the joint of the third single-core cable 500 tightly.

In one embodiment, the case 20 includes a plurality of first wire barrel 210. The plurality of first wire tubes 210 are fixed to the first side wall 101, respectively, and the plurality of first wire tubes 210 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 first connecting means 310. The mouth of one of the first wire barrel 210 faces the opening of one of the first wire receiving holes 312. The first single-core cable 300 passes through the first wire connecting tube 210 and is clamped in the corresponding first wire connecting hole 312.

In one embodiment, the case 20 includes a plurality of second wire barrels 220. The plurality of second wire tubes 220 are fixed to the first sidewall 101, respectively, and the plurality of second wire tubes 220 communicate with the first space 201. The plurality of second wire connecting tubes 220 are arranged in one-to-one correspondence with the plurality of second connecting means 410. The second single core cable 400 is electrically connected to the corresponding second connecting device 410 through the second wire connecting tube 220.

In one embodiment, the case 20 includes a plurality of third wire barrel 230. The plurality of third wire pipes 230 are fixed to the second sidewall 102, respectively, and the plurality of third wire pipes 230 communicate with the first space 201. The plurality of third wire barrel 230 is provided in one-to-one correspondence with the plurality of third connecting means 510. The third single core cable 500 is electrically connected to the corresponding third connecting means 510 through one of the third junction boxes 230.

In one embodiment, the first connecting devices 310 are electrically connected to the grounding connecting device 60 respectively, so that the three-phase upstream cable metal protective sleeves are grounded respectively, and the voltage in the three-phase upstream cable metal protective sleeves is reduced to 0V.

Referring to fig. 4, in one embodiment, the plurality of first connecting means 310 includes a first phase first connecting means a₁A second phase first connecting device B₁And a third phase first connecting means C₁. The plurality of second connecting means 410 includes a first phase second connecting means a₂A second phase second connecting device B₂And a third phase second connecting means C₂. The plurality of third connecting means 510 includes a first phase third connecting means a₃A second phase third connecting device B₃And a third phase third connecting means C₃. The first phase second connecting device A₂With said first phase third connecting means A₃And (6) electrically connecting. The second phase second connecting device B₂Third connecting means B with said second phase₃And (6) electrically connecting. The third phase second connecting device C₂With said third phase third connecting means C₃And (6) electrically connecting. The first phase first connecting device A₁With said third phase third connecting means C₃And (6) electrically connecting. The second phase first connecting device B₁With said first phase third connecting means A₃And (6) electrically connecting. The third phase first connecting device C₁Third connecting means B with said second phase₃And (6) electrically connecting. The third connecting devices 510 are grounded to the ground connecting device 60, respectively.

In the above embodiment, the three phases of the first downstream cable metal sheaths are electrically connected to the three phases of the second downstream cable metal sheaths in a one-to-one correspondence. The three-phase upstream cable metal sheath and the three-phase first downstream cable metal sheath are respectively crossed and interconnected pairwise and then are grounded. After the voltages in the three-phase upstream cable metal sheath, the three-phase first downstream cable metal sheath and the three-phase second downstream cable metal sheath are mutually offset, the three-phase upstream cable metal sheath, the three-phase first downstream cable metal sheath and the three-phase second downstream cable metal sheath are grounded, so that the voltages in the three-phase upstream cable metal sheath, the three-phase first downstream cable metal sheath and the three-phase second downstream cable metal sheath are 0V.

Referring also to fig. 5, in one embodiment, the connection box 10 for a single core cable inlet includes a plurality of first connectors and a plurality of second connectors. The plurality of first connecting pieces are respectively first-phase first connecting pieces A₄A second phase first connecting member B₄And a third phase first connecting member C₄. The plurality of second connecting pieces are respectively first-phase second connecting pieces A₅A second phase second connecting piece B₅And a third phase second connecting member C₅。

The first phase first connecting piece A₄And one end of the first phase third connecting device A₃And (4) fixedly connecting. The second phase first connecting piece B₄Third connecting means B with said second phase₃And (4) fixedly connecting. The third phase first connecting piece C₄With said third phase third connecting means C₃And (4) fixedly connecting.

The first phase second connecting piece A₅And said first phase first connecting means a₁And (4) fixedly connecting. The first phase second connecting piece A₅And the other end of the third phase is connected with a first connecting piece C of the third phase₄The other end of one end of the connecting rod is fixedly connected. The second phase second connecting piece B₅And one end of the second phase is connected with the first connecting device B of the second phase₁And (4) fixedly connecting. The second phase second connecting piece B₅And the other end of the first connecting piece A₄The other end of one end of the connecting rod is fixedly connected. The third phase second connecting piece C₅And said first phase third connecting means B₁And (4) fixedly connecting. The third phase second connecting piece C₅And the other end of the second phase is connected with the second phase first connecting piece B₄The other end of one end of the upstream cable is fixedly connected to realize the three-phase upstream cable metal sheath andthe three phases of the first downstream cable metal sheaths (the three phases of the second downstream cable metal sheaths) are respectively crossed and interconnected pairwise.

The connection box 10 for the single-core cable inlet wire further comprises a plurality of third connection pieces 103 and a plurality of protection devices 104, wherein the protection devices are respectively fixed on the surface of the insulator 620 far away from the first connection plate 601. One end of the plurality of third connecting pieces is connected with the plurality of protection devices in a one-to-one correspondence manner. The other ends of the third connecting pieces are correspondingly connected with the other ends of the first connecting pieces one by one.

In one embodiment, the connection box 10 for single-core cable inlet wires further comprises 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.

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

1. A connecting box for single core cable inlet wire, its characterized in that includes:

a box body (20) which forms a first space (201) in a surrounding way;

a first connection device array (30) received in the first space (201), wherein the first connection device array (30) comprises a plurality of first connection devices (310), the plurality of first connection devices (310) are arranged at intervals, and each first connection device (310) is used for being electrically connected with an upstream cable metal protective sleeve through a first single-core cable (300);

a second connection device row (40) received in the first space (201), the first connection device row (30) being parallel to the second connection device row (40) and being arranged in a staggered manner along a first direction, the second connection device row (40) comprising a plurality of second connection devices (410), the plurality of second connection devices (410) being arranged at intervals, each second connection device (410) being used for electrically connecting with a first downstream cable metal sheath through a second monocable (400);

a third connecting device row (50) received in the first space (201), wherein the third connecting device row (50) is disposed on a side of the second connecting device row (40) away from the first connecting device row (30), the third connecting device row (50) is disposed in parallel with the second connecting device row (40), the third connecting device row (50) comprises a plurality of third connecting devices (510), the plurality of third connecting devices (510) are disposed at intervals, each third connecting device (510) is used for being electrically connected with a second downstream cable metal sheath through a third single-core cable (500), and the plurality of second connecting devices (410) are electrically connected with the plurality of third connecting devices (510) in a one-to-one correspondence manner;

the grounding connection device (60) is accommodated in the first space (201), the grounding connection device (60) is arranged between the third connection device row (50) and the side wall of the box body (20), the grounding connection device (60) and the third connection device row (50) are arranged in a staggered mode along the first direction, and the grounding connection device (60) is used for being connected with a grounding cable.

2. A connection box for single core cable entries as claimed in claim 1, further comprising:

a first connection plate (610) received in the first space (201), the ground connection device (60) being disposed on the first connection plate (610), and the ground connection device (60) being electrically connected to the first connection plate (610);

a plurality of insulators (620) are accommodated in the first space (201), and are respectively and fixedly connected between the first connecting plate (610) and the bottom surface of the box body (20), the plurality of insulators (620) and the plurality of third connecting devices (510) are arranged along the second direction in a staggered mode, and the first direction is perpendicular to the second direction.

3. A connection box for single core cable entries as claimed in claim 1, further comprising:

and a first insulation plate (320) received in the first space (201) and fixed to an inner wall of the case (20), wherein the plurality of first connection devices (310) are fixed to the first insulation plate (320), respectively.

4. A connection box for single core cable entries as claimed in claim 1, further comprising:

and a second insulating plate (420) which is housed in the first space (201) and fixed to an inner wall of the case (20), wherein the plurality of second connection devices (410) and the plurality of third connection devices (510) are fixed to the second insulating plate (420), respectively.

5. A connection box for single-core cable entries according to claim 3, characterised in that said first connection means (310) comprise:

the first fixing seat (311) is fixed to the first insulating plate (320), the first fixing seat (311) is provided with a first wiring hole (312), the first wiring hole (312) is used for accommodating a joint of the first single-core cable (300), the first fixing seat (311) is provided with a first bolt hole (313), and the first bolt hole (313) is communicated with the first wiring hole (312);

a first slider (314) provided to the first wiring hole (312);

the first fastening bolt (315) is screwed into the first bolt hole (313), the first fastening bolt (315) is pressed against the first sliding block (314), and the first fastening bolt (315) is used for pushing the first sliding block (314) to press the joint of the first single-core cable (300).

6. Connecting box for single core cable entries according to claim 5, characterized in that said box (20) comprises a first side wall (101), said box (20) comprising:

a plurality of first wire barrel (210), a plurality of first wire barrel (210) are fixed in respectively first lateral wall (101), just a plurality of first wire barrel (210) with first space (201) intercommunication, a plurality of first wire barrel (210) with a plurality of connecting device (310) 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 (312), first single core cable (300) pass first wire barrel (210) joint in corresponding first wiring hole (312).

7. Connecting box for single core cable entries according to claim 6, characterized in that said box (20) comprises:

a plurality of second wire barrel (220), a plurality of second wire barrel (220) are fixed in respectively first lateral wall (101), just a plurality of second wire barrel (220) with first space (201) intercommunication, a plurality of second wire barrel (220) with a plurality of second connecting device (410) one-to-one sets up, second single core cable (400) pass second wire barrel (220) and correspond second connecting device (410) electricity is connected.

8. Connecting box for single core cable entries according to claim 6, characterized in that said box body (20) comprises a second side wall (102), said second side wall (102) being arranged opposite said first side wall (101), said box body (20) comprising:

a plurality of third wire connecting pipes (230), wherein the plurality of third wire connecting pipes (230) are respectively fixed on the second side wall (102), the plurality of third wire connecting pipes (230) are communicated with the first space (201), the plurality of third wire connecting pipes (230) and the plurality of third connecting devices (510) are arranged in a one-to-one correspondence manner, and the third single-core cable (500) penetrates through one third wire connecting pipe (230) to be electrically connected with the corresponding third connecting device (510).

9. Connection box for single-core cable entries according to claim 1, characterised in that said first connection means (310) are electrically connected to said ground connection means (60), respectively.

10. Connection box for the inlet wires of single-core cables according to claim 9, characterised in that said plurality of first connection means (310) comprises first phase first connection means a₁A second phase first connecting device B₁And a third phase first connecting means C₁The plurality of second connecting means (410) comprises a first phase second connecting means A₂A second phase second connecting device B₂And a third phase second connecting means C₂The plurality of third connecting means (510) comprises a first phase third connecting means A₃A second phase third connecting device B₃And a third phase third connecting means C₃Said first phase second connecting means A₂With said first phase third connecting means A₃Electrical connection, the second phase second connecting means B₂Third connecting means B with said second phase₃Electrical connection, the third phase second connecting means C₂With said third phase third connecting means C₃Electrical connection, the first phase first connecting means A₁With said third phase third connecting means C₃An electrical connection, the second phase being firstConnecting device B₁With said first phase third connecting means A₃Electrical connection, the third phase first connecting means C₁Third connecting means B with said second phase₃And (6) electrically connecting.

11. A connection box for single core cable entries as claimed in claim 1, further comprising:

the cover body (202) and the box body (20) jointly form the first space (201).