CN210744716U - Single core cable grounding box - Google Patents
Single core cable grounding box Download PDFInfo
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- CN210744716U CN210744716U CN201921540639.3U CN201921540639U CN210744716U CN 210744716 U CN210744716 U CN 210744716U CN 201921540639 U CN201921540639 U CN 201921540639U CN 210744716 U CN210744716 U CN 210744716U
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Abstract
The application relates to a single core cable grounding box for connect two sets of three-phase single core cables, include: the seal box has seted up first group inlet wire and second group inlet wire, and the seal box surrounds and forms one and hold the chamber. And the protective grounding assembly is arranged in the accommodating cavity and used for providing grounding protection, wherein the protective grounding assembly comprises a protector assembly and a grounding connecting plate, and the protector assembly is arranged on the grounding connecting plate and is electrically connected with the grounding connecting plate. The first fixing assembly is arranged in the accommodating cavity, is electrically connected with the protector assembly and is used for fixedly penetrating through the first group of wire inlets to enter the group of three-phase single-core cables in the accommodating cavity. The second fixing component is arranged in the accommodating cavity, is electrically connected with the grounding connecting plate and is used for fixing another group of three-phase single-core cables which penetrate through the second group of wire inlets and enter the accommodating cavity. Compare in using two grounding boxes, single core cable grounding box cost reduction can make things convenient for the staff to install or overhaul two sets of three-phase single core cables simultaneously.
Description
Technical Field
The application relates to the technical field of cable grounding, in particular to a single-core cable grounding box.
Background
In a metal sheath grounding protection system of a high-voltage cable line, a single-core cable is adopted to be respectively connected with metal sheaths on two sides of an insulating joint of a cross interconnection section. According to the design requirement of the cable line metal sheath ground protection, there is a case that the metal sheath on one side of the insulation joint adopts a direct grounding mode, and the other side adopts a mode of grounding with protection.
In order to satisfy the requirement of direct grounding and protective grounding for the wiring relationship, a direct grounding box and a grounding box with protection are generally adopted in the prior art. However, when two grounding boxes are installed at the same time, the problems of high cost, narrow operation space, inconvenience in installation and maintenance and the like exist.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a single core cable grounding box aiming at the problems of high cost, narrow operation space and inconvenient installation and maintenance existing in the simultaneous installation of two grounding boxes.
The application provides a single core cable grounding box for connect two sets of three-phase single core cables, include:
the sealing box is provided with a first group of wire inlets and a second group of wire inlets, and the sealing box surrounds to form an accommodating cavity;
the protective grounding assembly is arranged in the accommodating cavity and used for providing grounding protection, wherein the protective grounding assembly comprises a protector assembly and a grounding connecting plate, and the protector assembly is arranged on the grounding connecting plate and is electrically connected with the grounding connecting plate;
the first fixing assembly is arranged in the accommodating cavity, is electrically connected with the protector assembly and is used for fixing a group of three-phase single-core cables which penetrate through the first group of wire inlets and enter the accommodating cavity; and
the second fixing assembly is arranged in the accommodating cavity, is electrically connected with the grounding connecting plate and is used for fixedly penetrating through the second group of wire inlets to enter the accommodating cavity for another group of three-phase single-core cables.
In one of the embodiments, the first and second electrodes are,
the sealing box is also provided with a grounding port;
the protective grounding assembly further comprises a ground wire fixing seat, wherein the ground wire fixing seat is arranged at one end of the grounding connecting plate, is electrically connected with the grounding connecting plate and is used for fixing a grounding cable which penetrates through the grounding port and enters the accommodating cavity.
In one embodiment, the first fixing assembly comprises:
the insulating connecting plate is used for providing insulating protection; and
the three first fixing pieces are arranged on one side of the insulating connecting plate and used for fixing a group of three-phase single-core cables.
In one embodiment, the sealing box comprises a connecting plate fixing member, which is arranged in the accommodating cavity and fixed on the side wall of the sealing box, and is used for fixing the insulating connecting plate on the sealing box.
In one embodiment, the second fixing assembly comprises:
supporting the connecting plate; and
the three second fixing pieces are arranged on one side of the supporting and connecting plate, electrically connected with the supporting and connecting plate and used for fixedly penetrating through the second group of wire inlets into the accommodating cavity.
In one embodiment, the single-core cable grounding box further comprises a plurality of supporting insulators, wherein part of the supporting insulators are arranged on one side, away from the protector assembly, of the grounding connecting plate, and the rest of the supporting insulators are arranged on one side, away from the second fixing piece, of the supporting connecting plate, and are used for supporting the grounding connecting plate and the supporting connecting plate and providing insulation protection.
In one embodiment, the sealing box includes insulator fixing members, the number of which is the same as that of the supporting insulators, and the insulator fixing members are disposed in the accommodating cavity, fixed to a side wall of the sealing box, which is close to the supporting insulators, and configured to fix the supporting insulators to the sealing box.
In one embodiment, the second fixing member includes:
the fixing seat is arranged on one side of the supporting connecting plate and is provided with a first through hole and a second through hole, the first through hole is communicated with the second through hole, and the axis of the first through hole is vertical to the axis of the second through hole;
the pressing sliding block is arranged in the first through hole, is used for sliding in the first through hole along the direction vertical to the axis of the first through hole, and presses the inserted three-phase single-core cable; and
the fixing screw is arranged at one end, far away from the supporting and connecting plate, of the fixing seat, and a screw rod of the fixing screw penetrates through the second through hole and is fixedly connected with the pressing sliding block and used for driving the pressing sliding block to slide.
In one embodiment, the seal box comprises:
the box body is provided with a sealing flange, and the sealing flange is provided with a sealing groove;
the sealing rubber ring is arranged in the sealing groove; and
and the box cover is fixedly connected with the sealing flange and jointly encloses the box body to form the accommodating cavity.
In one embodiment, the sealing box further comprises a handle arranged on one side of the box cover far away from the box body, and the handle is used for facilitating the disassembly and assembly of the box cover.
Above-mentioned single core cable grounding box is provided with first fixed subassembly with the fixed subassembly of second, first fixed subassembly passes through the ground connection is protected to the protector subassembly, just the fixed subassembly of second passes through ground connection connecting plate direct ground. Therefore, the single core cable grounding box can be simultaneously connected with two sets of three-phase single core cables, wherein one set of three-phase single core cable is protected and grounded, and the other set of three-phase single core cable is directly grounded. Consequently, compare in using two grounding boxes, this application provides single core cable grounding box reduce the cost, can make things convenient for the staff to install or overhaul two sets of three-phase single core cables simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of an appearance of a single-core cable grounding box according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a single core cable grounding box provided in the embodiment of the present application, except for a sealing box;
fig. 3 is a schematic structural diagram of a single-core cable grounding box provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a single core cable grounding box provided in the embodiment of the present application, except for a sealing box, from another view angle;
fig. 5 is an explosion structure schematic diagram of a single core cable grounding box provided by the embodiment of the application.
Description of the reference numerals
100 single core cable grounding box
10 sealed box
111 first group of wire inlets
112 second group of wire inlets
113 cable inlet pipe
120 accommodating cavity
130 ground connection port
131 ground wire inlet pipe
140 connecting plate fixing piece
150 insulator fixing part
160 box body
161 sealing flange
162 sealing groove
170 sealing rubber ring
180 box cover
190 handle
20 protective grounding assembly
210 protector assembly
211 ground protector
212 protector connecting plate
220 ground connection board
221 short circuit ground connecting plate
230 ground wire fixing seat
30 first fixing component
310 insulation connecting plate
320 first fixing piece
40 second fixing assembly
410 supporting connection board
420 second fixing member
421 fixed seat
422 first through hole
423 second through hole
424 pressing slide block
425 set screw
50 supporting insulator
60 box fixing leg
70 box grounding electrode
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.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-2, the present application provides a single-core cable grounding box 100 for connecting two sets of three-phase single-core cables. The single core cable ground box 100 includes a sealing box 10, a protective grounding assembly 20, a first fixing assembly 30, and a second fixing assembly 40. The seal box 10 is provided with a first group of wire inlets 111 and a second group of wire inlets 112, and the seal box 10 surrounds and forms an accommodating cavity 120. The protective grounding assembly 20 is disposed in the accommodating cavity 120 for providing grounding protection, wherein the protective grounding assembly 20 includes a protector assembly 210 and a grounding connection board 220, and the protector assembly 210 is disposed on the grounding connection board 220 and electrically connected with the grounding connection board 220. The first fixing component 30 is disposed in the accommodating cavity 120, electrically connected to the protector component 210, and configured to fix a set of three-phase single-core cables entering the accommodating cavity 120 through the first set of wire inlets 111. The second fixing member 40 is disposed in the accommodating cavity 120, electrically connected to the grounding connection plate 220, and configured to fix another set of three-phase single-core cables passing through the second set of wire inlets 112 into the accommodating cavity 120.
The seal box 10 is provided with a first group of wire inlets 111 and a second group of wire inlets 112. It is understood that each of the first and second sets of wire inlets 111 and 112 may be provided with a cable inlet 113. Wherein, the axis of the cable inlet 113 can coincide with the axis of the wire inlet, so as to facilitate the single-core cable to pass through the cable inlet 113 and the wire inlet into the accommodating cavity 120. Further, after the single-core cable enters the accommodating cavity 120, the cable inlet pipe 113 is far away from one end of the sealing box 10, and the wrapping sealing can be performed by using waterproof adhesive tapes and polyvinyl chloride adhesive tapes, so that the sealing performance and the insulating performance of the sealing box 10 are ensured. It is understood that the material of the cable inlet 113 may be an insulating material such as plastic.
In one embodiment, the first fixing element 30 corresponding to the first group of wire inlets 111 may be an upper layer cable core connecting device, and the second fixing element 40 corresponding to the second group of wire inlets 112 may be a lower layer cable core connecting device. After the two groups of single-core three-phase cables respectively pass through the first group of wire inlets 111 and the second group of wire inlets 112, the two groups of single-core three-phase cables can be fixedly connected with the first fixing component 30 and the second fixing component 40 respectively. It can be understood that the two sets of single-core three-phase cables may be three-phase cables at both ends of the high voltage cable intermediate joint, and the first fixing member 30 and the second fixing member 40 may respectively correspond to the three-phase cables at one end of the high voltage cable intermediate joint.
The protective earth assembly 20 includes a protector assembly 210 and an earth connection plate 220. Wherein the protector component 210 may provide ground protection and the ground connection plate 220 may be electrically connected to a ground cable. In one embodiment, the three-phase single-core cable corresponding to the first fixing assembly 30 can be protected from being grounded. Thus, the protector assembly 210 may include three ground protectors 211. The three ground protectors 211 are disposed on the same side of the ground connection board 220 and are electrically connected to the first fixing assembly 30 respectively. In one embodiment, three ground protectors 211 may be electrically connected to the first fixing assembly 30 through three protector connecting plates 212, and one end of each protector connecting plate 212 is fixedly connected to one end of one ground protector 211 away from the ground connecting plate 220 through a screw, and the other end is fixedly connected to the first fixing assembly 30 through a screw. It is understood that the three protector links 212 can provide stable electrical connection between the first fixing member 30 and the three ground protectors 211 to ensure the effect of protecting the ground of the single core cable ground box 100. In addition, the material of the protector connecting plate 212 is not limited as long as it can achieve electrical connection. In one embodiment, the material of the protector link plate 212 may be copper, which is preferably conductive.
In one embodiment, the three-phase single-core cable corresponding to the second fixing assembly 40 may be directly grounded. Therefore, the second fixing assembly 40 can be electrically connected to the ground connection board 220 through a short ground connection board 221, that is, one end of the short ground connection board 221 is fixedly connected to the ground connection board 220 through a screw, and the other end is fixedly connected to the second fixing assembly 40 through a screw. It will be appreciated that the short grounding link plate 221 may provide a stable electrical connection between the second fixing member 40 and the grounding link plate 220 to ensure the effect of direct grounding of the single core cable grounding box 100. The material of the ground connection plate 220 is not limited as long as it can achieve electrical connection. In one embodiment, the material of the ground connection plate 220 may be copper with good electrical conductivity.
The single core cable grounding box 100 is provided with a first fixing component 30 and a second fixing component 40, wherein the first fixing component 30 is protected and grounded through a protector component 210, and the second fixing component 40 is directly grounded through a grounding connecting plate 220. Therefore, the single core cable grounding box 100 can connect two sets of three-phase single core cables at the same time, wherein one set of three-phase single core cables is protected and grounded, and the other set of three-phase single core cables is directly grounded. Therefore, compare in using two grounding boxes, the single core cable grounding box 100 that this application provided has reduced cost and the required space of installation, can make things convenient for the staff to install or overhaul two sets of three-phase single core cables simultaneously. In addition, in the metal sheath ground protection system of the high-voltage cable line, the metal sheaths on the two sides of the joint can realize flexible transposition connection through the single-core cable grounding box 100, and the problem of joint disassembly caused by wiring errors and incapability of replacement in a coaxial cable wiring scheme can be further solved.
In one embodiment, the enclosure 10 further defines a ground port 130. The protective grounding assembly 20 further includes a ground wire fixing seat 230, wherein the ground wire fixing seat 230 is disposed at one end of the grounding connection plate 220 and electrically connected to the grounding connection plate 220 for fixing a grounding cable passing through the grounding port 130 into the accommodating cavity 120. The ground port 130 may be provided with a ground inlet pipe 131. The ground wire inlet tube 131 may be used to lead out the total ground wire of the single core cable ground box 100. It is understood that the ground anchor 230 may be disposed at an end of the ground connection plate 220 near the ground opening 130, and the ground anchor 230 may fix the ground cable passing through the ground inlet tube 131 and the ground opening 130 into the receiving cavity 120. Further, after the ground cable enters the accommodating cavity 120, one end of the ground wire inlet tube 131, which is far away from the sealing box 10, may be wrapped and sealed by using a waterproof adhesive tape and a polyvinyl chloride adhesive tape, so as to ensure the sealing property and the insulating property of the sealing box 10. It is understood that the material of the ground wire inlet pipe 131 may be an insulating material such as plastic.
In one embodiment, the first fixing member 30 includes an insulating connection plate 310 and three first fixing members 320. The insulating connection plate 310 is used to provide insulation protection. Three first fixing members 320 are disposed at one side of the insulating connecting plate 310, and are used for fixing a set of three-phase single-core cables. It can be understood that three first fixing members 320 may be connected to three ground protectors 211 through three protector connecting plates 212 in a one-to-one correspondence, so as to ensure that one ground protector 211 corresponds to each phase of monocable corresponding to the three first fixing members 320. It is understood that the material of the first fixing member 320 may be copper with better conductivity.
Referring to fig. 3, in one embodiment, the sealing box 10 includes a connecting plate fixing member 140 disposed in the accommodating cavity 120 and fixed to a sidewall of the sealing box 10 for fixing the insulating connecting plate 310 to the sealing box 10. It is to be understood that the present application does not limit the number of the web fixing members 140 as long as it can fix the insulating web 310 to the inner wall of the hermetic container 10. In one embodiment, the number of the connecting plate fixing members 140 may be one, that is, one end of the insulating connecting plate 310 is fixed, or two, that is, both ends of the insulating connecting plate 310 are fixed. It will be appreciated that the connection plate fixture 140 may ensure a stable connection of the insulating connection plate 310, i.e., ensure that the position of the first fixture 320 remains unchanged, thereby facilitating the installation and fixation of the three-phase single core cable.
In one embodiment, the second fixing assembly 40 includes a support connection plate 410 and three second fixing pieces 420. The three second fixing members 420 are disposed at one side of the support connection plate 410, and are electrically connected to the support connection plate 410, for fixing the three-phase single-core cable that enters the accommodating cavity 120 through the second group of wire inlets 112. It is understood that the material of the second fixing member 320 may be copper with better conductivity. In addition, the connection plate fixing member 140 may also be used to fix one end or both ends of the support connection plate 410, that is, the support connection plate 410 may be fixed to the inner wall of the seal box 10 by the connection plate fixing member 140, thereby ensuring stable connection of the support connection plate 410. In one embodiment, the number of the web fixing members 140 may be four, that is, both ends of the insulation web 310 and the support web 410 are fixed to the sidewalls of the hermetic container 10, respectively.
Referring to fig. 4, in one embodiment, the single core cable grounding box 100 further includes a plurality of supporting insulators 50, wherein a portion of the supporting insulators 50 is disposed on a side of the grounding connection plate 220 away from the protector assembly 210, and the rest of the supporting insulators 50 are disposed on a side of the supporting connection plate 410 away from the second fixing member 420, for supporting the grounding connection plate 220 and the supporting connection plate 410 and providing insulation protection. It can be understood that the support connection board 410 and the ground connection board 220 are not insulating boards since the support connection board 410 needs to be connected to the ground cable through the ground connection board 220 to achieve direct grounding. Accordingly, by providing a plurality of support insulators 50, insulation between the support connection plate 410 and the ground connection plate 220 and the seal box 10, respectively, can be achieved. It is to be understood that the number of the support insulators 50 is not limited in the present application as long as it can achieve insulation between the support connection plate 410 and the ground connection plate 220 and the hermetic container 10. In one embodiment, the number of the supporting insulators 50 may be four, two of the supporting insulators are disposed on the side of the supporting connection plate 410 away from the second fixing member 420, and the other two supporting insulators are disposed on the side of the grounding connection plate 220 away from the grounding protector 211.
In one embodiment, the sealing box 10 includes the same number of insulator holders 150 as the number of the supporting insulators 50, and the insulator holders 150 are disposed in the accommodating cavities 120 and fixed to the side walls of the sealing box 10 near the supporting insulators 50 for fixing the supporting insulators 50 to the sealing box 10. It will be appreciated that the end of the support insulator 50 remote from the support web 410 and the ground web 220 may be secured to the insulator mount 150 and thus to the bottom wall of the seal box 10. Therefore, the support insulator 50 can provide support for the support connection plate 410 and the ground connection plate 220, respectively, while ensuring that the support connection plate 410 and the ground connection plate 220 are insulated from the hermetic container 10, respectively, and ensure stable connection between the support connection plate 410 and the ground connection plate 220 and the hermetic container 10, thereby improving the safety of the single core cable ground container 100.
In one embodiment, the second fixing member 420 includes a fixing seat 421, a pressing slider 424, and a fixing screw 425. The fixing base 421 is disposed on one side of the supporting connection plate 410, and the fixing base 421 has a first through hole 422 and a second through hole 423, the first through hole 422 is communicated with the second through hole 423, and an axis of the first through hole 422 is perpendicular to an axis of the second through hole 423. The pressing slider 424 is disposed at the first through hole 422, and is configured to slide in the first through hole 422 in a direction perpendicular to an axis of the first through hole 422, and press the inserted three-phase single core cable. The fixing screw 425 is disposed at one end of the fixing base 421 away from the supporting connection plate 410, and a screw of the fixing screw 425 penetrates through the second through hole 423 to be fixedly connected with the pressing slider 424, so as to drive the pressing slider 424 to slide. It can be understood that the fixing seat 421, the pressing slider 424 and the fixing screw 425 can further ensure a reliable electrical connection between the cable core penetrating into the single core cable grounding box 100 and the second fixing member 420.
In one embodiment, the first fixing member 320 may have the same structure as the second fixing member 420. It can be understood that when the first fixing member 320 is connected to the ground protectors 211, one end of each protector connecting plate 212 may be fixedly connected to one end of one ground protector 211 away from the ground connecting plate 220 by screws, and the other end may be fixedly connected to the fixing seat 421 of the first fixing member 30 by screws. In one embodiment, the structure of the ground wire fixing base 230 may be the same as that of the second fixing member 420.
Referring also to fig. 5, in one embodiment, the seal box 10 includes a box body 160, a seal rubber ring 170, and a box cover 180. The box body 160 is provided with a sealing flange 161, and the sealing flange 161 is opened with a sealing groove 162. The sealing rubber ring 170 is disposed in the sealing groove 162. The cover 180 is fixedly connected to the sealing flange 161 and encloses the housing chamber 120 together with the casing 160. It is understood that the case body 160 and the case cover 180 together constitute the receiving chamber 120. In one embodiment, the sealing flange 161 may be a flange on the open side of the box 160. The case body 160, the sealing flange 161, the sealing groove 162, the sealing rubber ring 170 and the case cover 180 together constitute a seal of the hermetic case 10. Wherein the sealing flange 161 and the cover 180 may be coupled by a bolt assembly.
In one embodiment, the case 160 further includes a case fixing leg 60. The box fixing leg 60 is disposed on a side wall of the box 160 and outside the accommodating chamber 120, for fixing the box 160. Further, the single core cable grounding box 100 further includes a box body grounding electrode 70. The case ground electrode 70 is disposed on a sidewall of the case 160 and outside the accommodating chamber 120. The case grounding electrode 70 may be used for grounding the case 160, and may prevent electric leakage and electric shock when the single core cable grounding case 100 is used.
In one embodiment, the sealing box 10 further includes a handle 190 disposed on a side of the box cover 180 away from the box body 160 for facilitating the assembly and disassembly of the box cover 180. It will be appreciated that handle 190 is secured to the side of cover 180 remote from housing 160 by a retaining block. Through setting up handle 190, can make things convenient for switch box 160, and then improve the efficiency of installation or maintenance single core cable grounding box 100.
In one embodiment, the single core cable grounding box 100 is installed by the following method: first, the cabinet 160 is fixed to the wall by four cabinet fixing legs 60. Bolt assemblies for connecting sealing flange 161 and cover 180 are disassembled, and cover 180 and sealing rubber ring 170 are removed. Screws at both ends of the protector link plate 212 are detached, thereby removing the protector link plate 212. Next, the fixing screws 425 in the first fixing member 320, the second fixing member 420 and the ground fixing member 230 are adjusted, and the pressing slider 424 is adjusted to a proper position, and then the insulation-stripped incoming cable and the ground cable are inserted, and the fixing screws 425 are adjusted again to press the pressing slider 424 against the cable. And thirdly, wrapping and sealing the ends of the cable inlet pipe 113 and the ground wire inlet pipe 131 far away from the box body 160 by using waterproof adhesive tapes and polyvinyl chloride adhesive tapes. Finally, the removed protector link plate 212 is restored, the box body 160 is sealed with the bolt assembly, and the box body ground electrode 70 is grounded.
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-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting 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 (10)
1. The utility model provides a single core cable grounding box for connect two sets of three-phase single core cables, its characterized in that includes:
the sealing box (10) is provided with a first group of wire inlets (111) and a second group of wire inlets (112), and the sealing box (10) surrounds to form an accommodating cavity (120);
a protective grounding assembly (20) disposed in the accommodating cavity (120) for providing grounding protection, wherein the protective grounding assembly (20) comprises a protector assembly (210) and a grounding connection plate (220), and the protector assembly (210) is disposed on the grounding connection plate (220) and is electrically connected with the grounding connection plate (220);
the first fixing assembly (30) is arranged in the accommodating cavity (120), is electrically connected with the protector assembly (210), and is used for fixing a group of three-phase single-core cables which penetrate through the first group of wire inlets (111) and enter the accommodating cavity (120); and
and the second fixing component (40) is arranged in the accommodating cavity (120), is electrically connected with the grounding connecting plate (220) and is used for fixing and penetrating through the second group of wire inlets (112) to enter the accommodating cavity (120) and another group of three-phase single-core cables.
2. A single core cable grounding box according to claim 1,
the seal box (10) is also provided with a grounding port (130);
the protective grounding assembly (20) further comprises a ground wire fixing seat (230), wherein the ground wire fixing seat (230) is arranged at one end of the grounding connecting plate (220), is electrically connected with the grounding connecting plate (220), and is used for fixing a grounding cable which penetrates through the grounding port (130) and enters the accommodating cavity (120).
3. A single core cable grounding box according to claim 1, characterized in that said first fixing assembly (30) comprises:
an insulating connection plate (310) for providing insulation protection; and
the three first fixing pieces (320) are arranged on one side of the insulating connecting plate (310) and used for fixing a group of three-phase single-core cables.
4. A single core cable grounding box according to claim 3, characterized in that said sealing box (10) comprises a connection plate fixation (140) arranged inside said housing cavity (120) and fixed to a side wall of said sealing box (10) for fixing said insulating connection plate (310) to said sealing box (10).
5. A single core cable grounding box according to claim 1, characterized in that said second fixing assembly (40) comprises:
a support connection plate (410); and
the three second fixing pieces (420) are arranged on one side of the supporting and connecting plate (410), electrically connected with the supporting and connecting plate (410) and used for fixedly penetrating through the second group of wire inlets (112) to enter the accommodating cavity (120) for the three-phase single-core cable.
6. A single core cable grounding box according to claim 5, further comprising a plurality of supporting insulators (50), wherein a part of the supporting insulators (50) are disposed on a side of the grounding connection plate (220) away from the protector assembly (210), and the rest of the supporting insulators (50) are disposed on a side of the supporting connection plate (410) away from the second fixing member (420), for supporting the grounding connection plate (220) and the supporting connection plate (410) and providing insulation protection.
7. A single core cable grounding box according to claim 6, characterized in that the sealing box (10) comprises the same number of insulator holders (150) as the number of support insulators (50), said insulator holders (150) being arranged in said housing cavity (120) and being fixed to the side wall of the sealing box (10) close to the support insulators (50) for fixing the support insulators (50) to the sealing box (10).
8. A single core cable grounding box according to claim 5, characterized in that said second fixing member (420) comprises:
the fixing seat (421) is arranged on one side of the supporting connecting plate (410), the fixing seat (421) is provided with a first through hole (422) and a second through hole (423), the first through hole (422) is communicated with the second through hole (423), and the axis of the first through hole (422) is vertical to the axis of the second through hole (423);
the pressing sliding block (424) is arranged in the first through hole (422) and used for sliding in the first through hole (422) along the direction perpendicular to the axis of the first through hole (422) and pressing the inserted three-phase single-core cable; and
the fixing screw (425) is arranged at one end, far away from the supporting connecting plate (410), of the fixing seat (421), and a screw rod of the fixing screw (425) penetrates through the second through hole (423) to be fixedly connected with the pressing sliding block (424) and used for driving the pressing sliding block (424) to slide.
9. A single core cable grounding box according to claim 1, characterized in that said sealing box (10) comprises:
the box body (160) is provided with a sealing flange (161), and the sealing flange (161) is provided with a sealing groove (162);
a sealing rubber ring (170) arranged in the sealing groove (162); and
and the box cover (180) is fixedly connected with the sealing flange (161) and encloses the accommodating cavity (120) together with the box body (160).
10. A single core cable grounding box according to claim 9, characterized in that said sealing box (10) further comprises a handle (190) disposed on a side of said box cover (180) away from said box body (160) for facilitating the disassembly and assembly of said box cover (180).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540639.3U CN210744716U (en) | 2019-09-17 | 2019-09-17 | Single core cable grounding box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540639.3U CN210744716U (en) | 2019-09-17 | 2019-09-17 | Single core cable grounding box |
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| CN210744716U true CN210744716U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921540639.3U Active CN210744716U (en) | 2019-09-17 | 2019-09-17 | Single core cable grounding box |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969452A (en) * | 2020-08-17 | 2020-11-20 | 杭州巨骐信息科技股份有限公司 | Intelligent monitoring's ground connection case |
| CN112490998A (en) * | 2020-12-09 | 2021-03-12 | 国网河南省电力公司孟州市供电公司 | Low-voltage insulated wire prevents down power supply protector |
| CN114094535A (en) * | 2021-11-04 | 2022-02-25 | 国网河北省电力有限公司石家庄供电分公司 | Pluggable high-voltage cable grounding box |
-
2019
- 2019-09-17 CN CN201921540639.3U patent/CN210744716U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969452A (en) * | 2020-08-17 | 2020-11-20 | 杭州巨骐信息科技股份有限公司 | Intelligent monitoring's ground connection case |
| CN111969452B (en) * | 2020-08-17 | 2021-11-09 | 杭州巨骐信息科技股份有限公司 | Intelligent monitoring's ground connection case |
| CN112490998A (en) * | 2020-12-09 | 2021-03-12 | 国网河南省电力公司孟州市供电公司 | Low-voltage insulated wire prevents down power supply protector |
| CN114094535A (en) * | 2021-11-04 | 2022-02-25 | 国网河北省电力有限公司石家庄供电分公司 | Pluggable high-voltage cable grounding box |
| CN114094535B (en) * | 2021-11-04 | 2023-08-15 | 国网河北省电力有限公司石家庄供电分公司 | Pluggable high-voltage cable grounding box |
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