CN214543580U

CN214543580U - Cable sheath cross interconnection protection grounding box

Info

Publication number: CN214543580U
Application number: CN202120920917.9U
Authority: CN
Inventors: 谢勇
Original assignee: Wuhan Changyuan Tianwei Power Equipment Manufacturing Co ltd
Current assignee: Wuhan Changyuan Tianwei Power Equipment Manufacturing Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-10-29
Anticipated expiration: 2031-04-29

Abstract

The utility model provides a cable sheath alternately interconnection protection grounding box, including box and sealing mechanism, the bottom of box front surface is the first fixed block of fixedly connected with respectively, second fixed block and third fixed block, the middle part of box front surface is the first piece of linking of fixedly connected with respectively, the second links the piece and the third links the piece, the first connecting copper bar of fixedly connected with between first fixed block and the third links the piece, copper bar is connected to fixedly connected with second between third fixed block and the second links the piece, copper bar is connected to fixedly connected with third between second fixed block and the first piece. The utility model discloses a sealed pad of second on first sealed pad on the lid and the box seals up box and lid, makes whole ground connection case sealed through junction tube and sealing washer simultaneously, has solved and has buried formula cable sheath ground connection case and after long-term the use, can appear condensation, enter the tide, the scheduling problem of intaking causes the ground connection case to become invalid, influences the problem of power cable line power supply reliability.

Description

Cable sheath cross interconnection protection grounding box

Technical Field

The utility model relates to an electric power field especially relates to cable sheath cross interconnection protection grounding box.

Background

At present, 35kV large-section power cables and power cables with voltage levels of 66kV, 110kV and above are all single-core cables, one end of a metal sheath of the cable is connected with each other in parallel and grounded, the other end of the metal sheath is not grounded, when lightning waves or internal overvoltage flow along the cable core, higher surge overvoltage occurs at the non-grounded end of the cable metal sheath, or when system short-circuit accident current flows through the cable core, the protection layer of the cable can generate high power frequency induced overvoltage without grounding end, the overvoltage can break through the insulation of the outer protection layer of the cable to cause multipoint grounding fault of the metal protection layer of the cable, the normal operation of the power cable is seriously influenced, even the service life of the cable is greatly reduced, therefore, according to the regulations of the power industry standard DL/T401-2002 "high-voltage power cable selection guide", a cable sheath protector is adopted to limit the induced voltage and the fault overvoltage on the metal sheath (metal sheath) of the power cable.

Traditionally, the cross interconnection protection ground connection of formula of burying cable sheath ground connection case mainly used high tension cable intermediate head shielding layer is a ground protection mechanical device, but formula of burying cable sheath ground connection case can appear condensation, enter the tide, the scheduling problem of intaking causes the ground connection case to become invalid after long-term the use, influences power cable circuit power supply reliability.

To this end, we provide a cable sheath cross-connect protection grounding box.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cable sheath alternately interconnection protection grounding box to solve the problem that proposes among the above-mentioned background art.

The utility model provides a cable sheath cross-connection protection grounding box, including box and sealing mechanism, the bottom of box front surface is fixedly connected with first fixed block, second fixed block and third fixed block respectively, the middle part of box front surface is fixedly connected with first even piece, second even piece and third even piece respectively, fixedly connected with first connecting copper bar between first fixed block and the third even piece, fixedly connected with second connecting copper bar between third fixed block and the second even piece, fixedly connected with third connecting copper bar between second fixed block and the first even piece, the top of first even piece, second even piece and third even fixedly connected with sheath protector, the top of sheath protector fixedly connected with electrically conductive mounting panel, the one end fixedly connected with ground connection of electrically conductive mounting panel connects; the sealing mechanism comprises a cover body, a first sealing gasket, a bolt, a second sealing gasket and a threaded hole, wherein the cover body is rotatably connected to the top of the box body, the first sealing gasket is fixedly connected to four sides of the front surface of the cover body, the bolt is fixedly connected to the front surface of the cover body, the second sealing gasket is fixedly connected to four sides of the front surface of the box body, and the threaded hole matched with the bolt for use is formed in the front surface of the box body.

Preferably, the bottom of the box body is communicated with a wiring pipe, and the inner wall of the wiring pipe is fixedly connected with a sealing ring.

Preferably, the two sides of the box body are fixedly connected with mounting blocks, and through holes are formed in the mounting blocks.

Preferably, the bottom of the front surface of the box body is fixedly connected with a first insulating plate, the front surface of the first insulating plate is respectively fixedly connected with a first fixed block, a second fixed block and a third fixed block, the middle of the front surface of the box body is fixedly connected with a second insulating plate, and the front surface of the second insulating plate is respectively fixedly connected with a first connecting block, a second connecting block and a third connecting block.

Preferably, the bottom of the cover body is fixedly connected with a telescopic sealing gasket, and the bottom of the telescopic sealing gasket is fixedly connected with the top of the box body.

Preferably, the back of the cover body is rotatably connected with a handle, and an anti-skid sleeve is sleeved on the outer side of the handle.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model seals the box body and the cover body through the first sealing gasket on the cover body and the second sealing gasket on the box body, and simultaneously seals the whole grounding box through the junction tube and the sealing ring, thereby solving the problem that after the buried cable sheath grounding box is used for a long time, the problems of condensation, moisture, water inflow and the like can occur to cause the failure of the grounding box, and the power supply reliability of a power cable circuit is influenced;

2. the utility model discloses a set up the patch tube and set up the sealing washer in the inside of patch tube, can seal the junction that the cable enters the box, prevent that the box from getting damp, intaking, through setting up installation piece and through-hole, the person of being convenient for uses to the installation of this device, through setting up first insulation board and second insulation board, can insulate between fixed block, even piece and the box, prevent that fixed block and even piece from producing the injury to the user on transmitting the electrical property to the box;

3. the utility model discloses a set up the flexible sealed pad, can seal in the space at top when lid and box are closed, prevent that external moisture from getting into the inside of box from the space and causing the damage to the mechanism of box inside, through setting up the handle, convenient to use person is to opening and being closed of lid.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the junction box of FIG. 1 according to the present invention;

FIG. 3 is a schematic structural view of the mounting block shown in FIG. 1 according to the present invention;

fig. 4 is a rear view of the cover shown in fig. 1 according to the present invention.

Reference numbers in the figures: 1. a box body; 2. a first fixed block; 3. a second fixed block; 4. a third fixed block; 5. a first connecting block; 6. a second connecting block; 7. a third connecting block; 8. a first connecting copper bar; 9. a second connecting copper bar; 10. a third connecting copper bar; 11. a sheath protector; 12. a conductive mounting plate; 13. a ground connection; 14. a sealing mechanism; 141. a cover body; 142. a first gasket; 143. a bolt; 144. a second gasket; 145. a threaded hole; 15. a wire connecting pipe; 16. a seal ring; 17. mounting blocks; 18. a through hole; 19. a first insulating plate; 20. a second insulating plate; 21. a telescoping gasket; 22. a handle.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2, fig. 3 and fig. 4 in combination, wherein fig. 1 is a schematic structural diagram of the present invention, fig. 2 is a schematic structural diagram of an internal structure of the junction box shown in fig. 1 of the present invention, fig. 3 is a schematic structural diagram of the mounting block shown in fig. 1 of the present invention, and fig. 4 is a rear view of the cover body shown in fig. 1 of the present invention. The cable sheath cross-interconnection protection grounding box comprises a box body 1 and a sealing mechanism 14, wherein the bottom of the front surface of the box body 1 is fixedly connected with a first fixed block 2, a second fixed block 3 and a third fixed block 4 respectively, the middle part of the front surface of the box body 1 is fixedly connected with a first connecting block 5, a second connecting block 6 and a third connecting block 7 respectively, a first connecting copper bar 8 is fixedly connected between the first fixed block 2 and the third connecting block 7, a second connecting copper bar 9 is fixedly connected between the third fixed block 4 and the second connecting block 6, a third connecting copper bar 10 is fixedly connected between the second fixed block 3 and the first connecting block 5, sheath protectors 11 are fixedly connected to the tops of the first connecting block 5, the second connecting block 6 and the third connecting block 7, conductive mounting plates 12 are fixedly connected to the tops of the sheath protectors 11, and one ends of the conductive mounting plates 12 are fixedly connected with grounding connectors 13; the sealing mechanism 14 includes a cover 141, a first gasket 142, a bolt 143, a second gasket 144 and a threaded hole 145, the top of the box 1 is rotatably connected with the cover 141, the first gasket 142 is fixedly connected to four sides of the front surface of the cover 141, the bolt 143 is fixedly connected to the front surface of the cover 141, the second gasket 144 is fixedly connected to four sides of the front surface of the box 1, and the threaded hole 145 matched with the bolt 143 is formed in the front surface of the box 1.

Further, the bottom intercommunication of box 1 has wire barrel 15, and the inner wall fixedly connected with sealing washer 16 of wire barrel 15 through setting up wire barrel 15 and set up sealing washer 16 in wire barrel 15's inside, can seal the junction that the cable got into box 1, prevents that box 1 from getting into tide, intaking.

Further, the equal fixedly connected with installation piece 17 in both sides of box 1, through-hole 18 has been seted up to installation piece 17's inside, through setting up installation piece 17 and through-hole 18, convenient to use person is to the installation of this device.

Further, the bottom fixedly connected with first insulation board 19 of box 1 front surface, the front surface of first insulation board 19 is fixedly connected with first fixed block 2 respectively, second fixed block 3 and third fixed block 4, the middle part fixedly connected with second insulation board 20 of box 1 front surface, the front surface of second insulation board 20 is fixedly connected with first even piece 5 respectively, even piece 6 of second and third even piece 7, through setting up first insulation board 19 and second insulation board 20, can be with the fixed block, even insulate between piece and the box 1, prevent that fixed block and even piece from producing the injury to the user on transmitting the box 1 with the electrical property.

Further, the bottom fixedly connected with flexible sealed pad 21 of lid 141, the bottom of flexible sealed pad 21 and the top fixed connection of box 1 through setting up flexible sealed pad 21, can seal up the space at lid 141 and box 1 closed time top, prevent that external moisture from getting into the inside of box 1 from the space and causing the damage to the mechanism of box 1 inside.

Further, the back of the cover 141 is rotatably connected with a handle 22, an anti-slip sleeve is sleeved on the outer side of the handle 22, and the cover 141 is convenient to open and close by a user through the handle 22.

The utility model provides a working principle of cable sheath alternately interconnection protection grounding box as follows:

when the sheath grounding box is installed, the end part of a coaxial cable is peeled for standby according to a preset size, objects in the box body 1 are cleaned, a peeled copper shaft cable penetrates into the box body 1 through the wiring pipe 15, then sequentially passes through the first fixing block 2 and the first connecting block 5, and is fixed by screws; after the first cable is fixed, a second cable and a third cable are threaded, and then a fourth cable is connected with the grounding joint 13; finally, the cover body 141 is covered outside the box body 1, the bolt 143 on the cover body 141 is screwed into the threaded hole 145, so that the cover body 141 and the box body 1 are fixed, the box body 1 and the cover body 141 are sealed through the first sealing gasket 142 on the cover body 141 and the second sealing gasket 144 on the box body 1, and meanwhile, the whole grounding box is sealed through the junction tube 15 and the sealing ring 16, so that the buried cable sheath grounding box has outdoor waterproof and corrosion-resistant functions.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. Cable sheath cross-connection protection grounding box, its characterized in that includes:

the box body (1), the bottom of the front surface of the box body (1) is fixedly connected with a first fixed block (2), a second fixed block (3) and a third fixed block (4) respectively, the middle part of the front surface of the box body (1) is fixedly connected with a first connecting copper bar (8), a second connecting copper bar (6) and a third connecting copper bar (7) respectively, a first connecting copper bar (8) is fixedly connected between the first fixed block (2) and the third connecting copper bar (7), a second connecting copper bar (9) is fixedly connected between the third fixed block (4) and the second connecting copper bar (6), a third connecting copper bar (10) is fixedly connected between the second fixed block (3) and the first connecting copper bar (5), the tops of the first connecting copper bar (5), the second connecting copper bar (6) and the third connecting copper bar (7) are fixedly connected with a protective layer protector (11), the top of the protective layer (11) is fixedly connected with a conductive mounting plate (12), one end of the conductive mounting plate (12) is fixedly connected with a grounding connector (13);

sealing mechanism (14), sealing mechanism (14) includes lid (141), first sealed pad (142), bolt (143), the sealed pad of second (144) and screw hole (145), the top of box (1) is rotated and is connected with lid (141), the equal fixedly connected with of four sides of lid (141) front surface fills up first (142) of pad, the front surface fixedly connected with bolt (143) of lid (141), the equal fixedly connected with of four sides of box (1) front surface fills up second (144), screw hole (145) that cooperate the use with bolt (143) are seted up to the front surface of box (1).

2. The cable sheath cross-connection protection grounding box of claim 1, characterized in that a connection tube (15) is connected to the bottom of the box body (1), and a sealing ring (16) is fixedly connected to the inner wall of the connection tube (15).

3. The sheath cross-connection protection grounding box of claim 1, wherein both sides of the box body (1) are fixedly connected with mounting blocks (17), and through holes (18) are formed inside the mounting blocks (17).

4. The sheath cross-connection protection grounding box of claim 1, characterized in that the bottom of the front surface of the box body (1) is fixedly connected with a first insulating plate (19), the front surface of the first insulating plate (19) is respectively fixedly connected with a first fixing block (2), a second fixing block (3) and a third fixing block (4), the middle part of the front surface of the box body (1) is fixedly connected with a second insulating plate (20), and the front surface of the second insulating plate (20) is respectively fixedly connected with a first connecting block (5), a second connecting block (6) and a third connecting block (7).

5. The sheath cross-connect protection grounding box of claim 1, wherein a retractable gasket (21) is fixedly connected to the bottom of the cover (141), and the bottom of the retractable gasket (21) is fixedly connected to the top of the box (1).

6. The sheath cross-connect protection grounding box of claim 1, wherein the back of the cover (141) is rotatably connected with a handle (22), and an anti-slip sleeve is sleeved on the outer side of the handle (22).