CN210898490U

CN210898490U - High-voltage cable grounding box

Info

Publication number: CN210898490U
Application number: CN201922167573.4U
Authority: CN
Inventors: 胡欣欣; 黄嘉明; 冯甘雨; 赵鹏勃; 刘淡冰; 伍斯恒; 李迪
Original assignee: Guangdong Power Grid Co Ltd; Zhuhai Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Zhuhai Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-06-30
Anticipated expiration: 2029-12-05

Abstract

The utility model provides a high tension cable grounding box. The utility model provides a high tension cable grounding box, includes the box and locates wiring subassembly in the box, the box includes the chamber door that can open that its lateral wall was equipped with, the outer wall connection of box has runner assembly, runner assembly includes the link and is used for fixing the fixed block on ground, link one end fixed connection be in on the outer wall of box, the other end with the fixed block rotates to be connected. The wiring component is arranged in the box, and the box is buried in the ground, so that the wiring component can be conveniently hidden, and the waterproof and antitheft functions are achieved; the box coupling assembling rotates the case to above ground when can conveniently overhauing and overhauls.

Description

High-voltage cable grounding box

Technical Field

The utility model relates to an electric power tech field, more specifically relates to a high tension cable grounding box.

Background

The direct grounding is one of the grounding modes of a metal shielding layer (or called metal sheath) of a large-section high-voltage single-core power cable with the voltage level of 110kV or above, and has the functions of inhibiting higher impact overvoltage on the metal shielding layer of the cable when lightning wave invasion occurs, internal overvoltage or short-circuit fault current flows through a cable core, avoiding the multipoint grounding fault of the metal shielding layer of the cable caused by the fact that the insulation of the cable sheath is broken down by the overvoltage, limiting the induced overvoltage on the metal sheath of the cable when the cable normally runs, avoiding the circulation formed in the metal shielding of the cable, preventing personnel from electric shock injury, ensuring the normal running of the power cable and prolonging the service life of the cable.

The grounding box of the grounding wire of the high-voltage cable commonly used at present has two types: one type is an underground high-voltage cable grounding wire grounding box which is buried in a joint well and has waterproof and anti-theft functions, but when cables are pretested and overhauled, a joint well cover plate needs to be opened to expose the high-voltage cable grounding wire grounding box, and if the cover plate is large in size, the cover plate needs to be lifted by a plurality of people, so that the labor time is consumed; the other type is a ground vertical high-voltage cable grounding wire grounding box which is arranged on the ground near a joint well cover plate and has the functions of convenient pre-test and overhaul, but has general waterproof and anti-theft functions, and the whole body is possibly not friendly to the surrounding environment.

At present, no grounding box can meet the requirements of water resistance, theft prevention and convenient pre-test and maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome among the above-mentioned background art can not satisfy the demand of waterproof, theftproof simultaneously, have the problem of the function of convenient preliminary examination, maintenance again, provide a high tension cable grounding box. The wiring component is arranged in the box, and the box is buried in the ground, so that the wiring component can be conveniently hidden, and the waterproof and antitheft functions are achieved; the box coupling assembling rotates the case to above ground when can conveniently overhauing and overhauls.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a high tension cable grounding box, includes the box and locates wiring subassembly in the box, the box includes the chamber door that can open that its lateral wall was equipped with, the outer wall connection of box has runner assembly, runner assembly includes link and fixed block, link one end fixed connection be in on the outer wall of box, the other end through a rotation axis with the fixed block rotates to be connected, the rotation axis with fixed block place plane is parallel. The side wall of the box body is connected with a rotating component except one side of the box door, the rotating component is fixedly connected with the box body through a connecting frame, a fixed block of the rotating component is fixed under the ground, and the connecting frame of the rotating component can drive the box body to rotate around the fixed block; when the grounding box is installed, a pit capable of burying the box body and the rotating assembly is dug below the ground, the fixing block is fixed at the bottom of the pit, and after the wiring assemblies are connected, the box body is placed in the pit, so that the grounding box is hidden, and the city appearance is not influenced; when the box body needs to be overhauled, the box body can be pulled up, and the box body is rotated to the ground through the rotating assembly, so that pre-test and overhaul can be carried out by opening the box door on the ground; and after the maintenance is finished, the box body is put back into the pit and buried. The wiring assembly is arranged in the box, and the box is buried in the ground, so that the box can be conveniently hidden, and the waterproof and antitheft functions are achieved; the box coupling assembling rotates the case to above ground when can conveniently overhauing and overhauls.

Further, the wiring subassembly includes connecting pipe, binding post, ground terminal and conductive connection board, binding post is last to be equipped with the mounting hole that is used for connecting the cable core, the connecting pipe is fixed to be worn to establish on the bottom surface of box, binding post with ground terminal locates the box with on the inside wall of the relative one side of chamber door, binding post passes through conductive connection board with ground terminal is connected one to one. Thus, the connecting pipe is arranged on the bottom surface in a penetrating manner, the cable penetrates into the box body from the connecting pipe, the wire core of the cable is connected to the mounting hole of the connecting terminal, the connecting terminal is connected to the grounding terminal through the conductive connecting plate, and the grounding terminal penetrates through the other connecting pipe through a wire to be grounded; each terminal is connected to a ground terminal.

Furthermore, the quantity of connecting pipe is 4, binding post's quantity is 3, the quantity of ground terminal is 4, the quantity of conducting connection board is 3, at least two intercrossing sets up between each conducting connection board. Thus, the number of the wiring terminals is three, the three wiring terminals are just matched with three cables of the three-phase high-voltage cable, each of the three cables penetrates through one connecting pipe to be connected to one wiring terminal, 3 wiring terminals are connected with 3 grounding terminals in a one-to-one correspondence mode, 4 grounding terminals are connected with each other, and the redundant 1 grounding terminal leads out one grounding wire to penetrate through the residual connecting pipe to conduct grounding of the whole three-phase high-voltage cable; the conductive connecting plates are connected in a cross mode, so that the effect of reducing induced voltage can be achieved, and the electricity safety is protected.

Furthermore, the 4 grounding terminals are commonly arranged on a conductive grounding connecting plate. Thus, 4 grounding terminals are connected in common, and all grounding terminals can be grounded only by leading out a grounding wire on one of the grounding terminals.

Further, the grounding terminal is sleeved with a lightning arrester. Thus, the lightning arrester is called as a protector, and can present high resistance at low voltage and low resistance at high voltage; when the whole cable is enabled to leak electricity, the cable can be rapidly grounded, and the electricity safety is ensured.

Furthermore, the link includes first connecting plate and second connecting plate, first connecting plate one end is fixed attached on the box with the side outer wall that the chamber door is adjacent, second connecting plate one end is connected on the outer wall of box bottom surface, the other end is connected first connecting plate is close to one of fixed block is served. Like this, the bottom surface of first connecting plate and second connecting plate and box constitutes the structure similar to triangle-shaped, and triangle-shaped has stability, can make rotating assembly when taking the box to rotate, and the atress is more stable, is difficult to the rupture.

Furthermore, the connecting pipe is of a cylindrical structure, one end of the connecting pipe is located inside the box body, the other end of the connecting pipe is located outside the box body, and a waterproof connecting piece is arranged at one end, located outside the box body, of the connecting pipe. Like this, the connecting pipe is fixed to wear to establish on the lateral wall of box, and the inside and outside of switch-on box, the height of general connecting pipe is close with binding post's height, makes things convenient for the connection of cable or earth connection like this more, because the cable probably leaves the gap after penetrating the connecting pipe, and here waterproof connecting piece generally is the rubber materials of deformability, and waterproof connecting piece's effect is sealed the gap for water-proof effects is better.

Furthermore, the conductive connecting plate is a telescopic connecting plate. Like this, the telescopic connecting plate of same money can be applicable to the binding post between the different distances and the connection of ground terminal, makes things convenient for the cross interconnection between the electrically conductive connecting plate.

Furthermore, a handle is arranged on the outer wall of one side, opposite to the first connecting plate, of the box body. Like this, the handle is in the relative one side of first connecting plate, and when the box was put down, first connecting plate was with the bottom surface laminating in the hole, so the handle just is in the box one side that is closest to ground, conveniently stimulates the case when overhauing, pulls out pre-buried hole with the case.

Further, the box body is made of insulating materials. Therefore, the manufacturing cost of the insulating material is lower, the waterproof effect is good, and the stability of the insulating material placed under the ground is higher; and the insulating material is generally lighter, can make more laborsaving when pulling up the box.

Compared with the prior art, the beneficial effects are:

1. the wiring assembly is arranged in the box, and the box is buried in the ground, so that the box can be conveniently hidden, and the waterproof and antitheft functions are achieved; the box coupling assembling rotates the case to above ground when can conveniently overhauing and overhauls.

Drawings

Fig. 1 is a schematic view of the overall structure of the door of the present invention when opened.

Fig. 2 is a schematic view of the present invention placed under the ground through the door.

Fig. 3 is a schematic structural view of the utility model without a door when turning to the ground.

Fig. 4 is a schematic view of a partial structure of the rotating assembly of the present invention.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", etc., indicating directions or positional relationships based on those shown in the drawings, it is only for convenience of description and simplicity of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed in a specific direction, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations on the present patent, and those skilled in the art will understand the specific meanings of the terms according to specific situations.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

as shown in fig. 1, a high voltage cable grounding box comprises a box body 1 and a wiring assembly arranged in the box body 1, wherein the box body 1 comprises an openable box door 101 arranged on a side wall thereof (the box door 101 is in an open state in the figure, and the following description refers to a relative position relationship when the box door 101 is closed), a rotating assembly is connected to an outer wall of the box body 1, the rotating assembly comprises a connecting frame 2 and a fixing block 3 used for being fixed on the ground, one end of the connecting frame 2 is fixedly connected to an outer wall of the box body 1, and the other end of the connecting frame is rotatably connected with the fixing block 3.

In this embodiment, the wiring assembly includes 4 connecting

pipes

102, 3 wiring terminals 103, 4

ground terminals

104 and 3 conductive connecting plates 105, the wiring terminals 103 are provided with mounting holes for connecting cable cores, the connecting pipes 102 are fixedly arranged on the bottom surface of the box body 1, the wiring terminals 103 and the ground terminals 104 are arranged on the inner side wall of the box body 1 opposite to the box door 101, each wiring terminal 103 is connected with one ground terminal 104 one by one through the conductive connecting plates 105, and at least two conductive connecting plates 105 are arranged in a mutually crossing manner; the 4 grounding terminals 104 are commonly arranged on a conductive grounding connecting plate 16; the grounding connecting plate 16 is fixed on the inner wall of the back of the box body, and the grounding terminal 104 is sleeved with a lightning arrester 17; the connecting frame 2 comprises a first connecting plate 201 and a second connecting plate 202, one end of the first connecting plate 201 is fixedly attached to the outer wall of the side face of the box body 1 adjacent to the box door 101, one end of the second connecting plate 202 is connected to the outer wall of the bottom face of the box body 1, and the other end of the second connecting plate 202 is connected to one end, close to the fixing block 3, of the first connecting plate 201; the connecting pipe 102 is of a cylindrical structure, one end of the connecting pipe 102 is positioned inside the box body 1, the other end of the connecting pipe 102 is positioned outside the box body 1, and a waterproof connecting piece is arranged at one end of the connecting pipe 102 positioned outside the box body 1; the conductive connection plate 105 is a telescopic connection plate; a handle is arranged on the outer wall of one side of the box body 1 opposite to the first connecting plate 201; the case 1 is made of an insulating material.

In the embodiment, the box body 1 is a cubic structure, one side surface of the box body 1 is provided with a box door 101 which can be opened by rotating, a wiring component is arranged in the box body 1 and is used for connecting a high-voltage cable and grounding the high-voltage cable, the box door 101 of the box body 1 is taken as the front surface, the left side surface and the bottom surface of the box body are connected with a rotating component, the rotating component is fixedly connected with the box body 1 through a connecting frame 2, a fixed block 3 of the rotating component is fixed under the ground, and the connecting frame 2 of the rotating component can drive the box body 1 to rotate around the fixed block; the connecting pipe 102 penetrates through the bottom surface, the grounding terminal 104 and the wiring terminal 103 are both arranged on the inner wall of the back surface, when the cable is grounded during installation, the cable penetrates into the box body 1 from the connecting pipe 102, a wire core of the cable is connected to the installation hole of the wiring terminal 103, the wiring terminal 103 is connected to the grounding terminal 104 through the conductive connecting plate 105, and the grounding terminal 104 penetrates through the other connecting pipe 102 through a wire to be grounded; each connection terminal 103 is connected to a ground terminal 104; the number of the connecting terminals 103 is 3, the connecting terminals are just matched with 3 cables of the three-phase high-voltage cable, each of the 3 cables penetrates through 1 connecting pipe 102 to be connected to 1 connecting terminal 103, the 3 connecting terminals 103 are correspondingly connected with 3 grounding terminals 104 one by one, the 4 grounding terminals 104 are mutually connected, and the redundant 1 grounding terminal 104 leads out a grounding wire to penetrate through the residual connecting pipe 102 to carry out grounding on the whole three-phase high-voltage cable; the conductive connecting plates 105 are connected in a cross connection mode, so that the effect of reducing induced voltage can be achieved, and the electricity safety is protected; connecting pipe 102 is fixed to wear to establish on the lateral wall of box 1, and the inside and outside of switch-on box 1, the height of general connecting pipe 102 is close with binding post 103's height, makes things convenient for the connection of cable or earth connection like this, because the cable probably leaves the gap after penetrating connecting pipe 102, and here waterproof connecting piece generally is deformable rubber material, and waterproof connecting piece's effect is to seal the gap for water-proof effects is better. The first connecting plate 201, the second connecting plate 202 and the bottom surface of the box body 1 form a structure similar to a triangle, and the triangle has stability, so that when the rotating assembly drives the box body 1 to rotate, the stress is more stable, and the rotating assembly is not easy to break; the handle is in the relative one side of first connecting plate 201, and when box 1 put down, first connecting plate 201 was with the bottom surface laminating in the hole, and the handle just so is in box 1 one side that leans on ground most, conveniently stimulates the case when overhauing, pulls out pre-buried hole with the case.

When the grounding box is installed, as shown in fig. 2 and 3, a ground level is arranged at the position A, a pit capable of burying the box body 1 and the rotating assembly is dug below the ground, the fixing block 3 is fixed at the bottom of the pit, and after the wiring assemblies are connected, the box body 1 is placed in the pit, so that the grounding box is hidden, and the city appearance cannot be influenced; when the maintenance is needed, the box body 1 can be pulled up, and the box body 1 is rotated to the ground through the rotating assembly, so that the pre-test and the maintenance can be carried out by opening the box door 101 on the ground; after the overhaul is finished, the box body 1 is put back into the pit and buried; the wiring assembly is arranged in the box, and the box is buried in the ground, so that the box can be conveniently hidden, and the waterproof and antitheft functions are achieved; the handle is in first connecting plate 201's relative one side, and when box 1 put down, first connecting plate 201 is with the bottom surface laminating in the hole, and the handle just so is by one side on ground most at box 1, conveniently stimulates the case when overhauing, and rotating assembly is connected to box 1, changes the case to more than ground when can conveniently overhauing and overhauls.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a high tension cable grounding box, includes the box and locates wiring subassembly in the box, the box includes the chamber door that can open that its lateral wall was equipped with, its characterized in that: the outer wall connection of box has rotating assembly, rotating assembly includes link and fixed block, link one end fixed connection be in on the outer wall of box, the other end through a rotation axis with the fixed block rotates and connects, the rotation axis with fixed block place plane is parallel.

2. The high voltage cable grounding box of claim 1, wherein: the wiring assembly comprises a connecting pipe, a wiring terminal, a grounding terminal and a conductive connecting plate, wherein the wiring terminal is provided with a mounting hole for connecting a cable core, the connecting pipe is fixedly arranged on the bottom surface of the box body in a penetrating mode, the wiring terminal and the grounding terminal are arranged on the inner side wall of one side, opposite to the box door, of the box body, and the wiring terminal is connected with the grounding terminal in a one-to-one mode.

3. The high voltage cable grounding box of claim 2, wherein: the quantity of connecting pipe is 4, binding post's quantity is 3, the quantity of ground terminal is 4, the quantity of electrically conductive connecting plate is 3, at least two intercrossing sets up between each electrically conductive connecting plate.

4. The high voltage cable grounding box of claim 3, wherein: the 4 grounding terminals are commonly arranged on a conductive grounding connecting plate.

5. The high voltage cable grounding box of claim 3, wherein: and the grounding terminal is sleeved with a lightning arrester.

6. The high voltage cable grounding box of claim 2, wherein: the connecting frame comprises a first connecting plate and a second connecting plate, one end of the first connecting plate is fixedly attached to the outer wall of the side face, adjacent to the box door, of the box body, one end of the second connecting plate is connected to the outer wall of the bottom face of the box body, and the other end of the second connecting plate is connected to one end, close to the fixing block, of the first connecting plate.

7. The high voltage cable grounding box of claim 2, wherein: the connecting pipe is of a cylindrical structure, one end of the connecting pipe is located inside the box body, the other end of the connecting pipe is located outside the box body, and a waterproof connecting piece is arranged at one end, located outside the box body, of the connecting pipe.

8. The high voltage cable grounding box of claim 2, wherein: the conductive connecting plate is a telescopic connecting plate.

9. The high voltage cable grounding box of claim 6, wherein: and a handle is arranged on the outer wall of one side of the box body opposite to the first connecting plate.

10. A high voltage cable grounding box according to any of claims 1 to 9, wherein: the box body is made of insulating materials.