CN214314388U - Cable grounding box - Google Patents
Cable grounding box Download PDFInfo
- Publication number
- CN214314388U CN214314388U CN202120242333.0U CN202120242333U CN214314388U CN 214314388 U CN214314388 U CN 214314388U CN 202120242333 U CN202120242333 U CN 202120242333U CN 214314388 U CN214314388 U CN 214314388U
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- box
- cable
- grounding
- utility
- observation hole
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- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 230000001012 protector Effects 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
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Abstract
The utility model provides a cable grounding box belongs to power equipment technical field. The utility model comprises a box cover and a box body, wherein a wire pipe for the cable to pass in and out is arranged on the side surface of the box body, outer edges are arranged around the top of the box body, and through holes for fixing the box cover by bolts are arranged on the outer edges; the box cover is provided with an observation hole and a hygrothermograph for displaying the temperature and humidity in the grounding box, the observation hole is arranged in a hollow manner, and a concave lens is arranged in the observation hole; and the tail end of the line pipe is provided with a sealing joint. The utility model is provided with an observation hole and a hygrothermograph, so that the internal condition and the internal temperature and humidity data of the grounding box can be checked without opening the grounding box in the daily operation and maintenance process; the utility model adopts a sealing design, and has good waterproof, moistureproof and dustproof performances; the utility model discloses can avoid thunderbolt and response overvoltage to the harm of cable sheath, can ensure power line safe operation, improve power cable's life.
Description
Technical Field
The utility model belongs to the technical field of power equipment, concretely relates to cable grounding box.
Background
The high-voltage power cable conductor is a primary winding, the cable metal sheath is a secondary winding, and when alternating current is generated in the conductor, an alternating electric field can generate induced voltage on the cable metal sheath. Generally, in order to limit the induced voltage or fault overvoltage on the metal sheath of a single-core power cable and to avoid the formation of circulating currents in the sheath, one end of the metal sheath of a short-distance power cable should be directly grounded and the other end should be grounded through a protector, and the cable grounding box is a special device for grounding the power cable sheath. The cable grounding box is arranged between the cable sheath and the ground, and can avoid the damage of lightning stroke and induced overvoltage to the cable sheath.
Because electric power operational environment particularity, present cable grounding case has sealed functions such as waterproof, dampproofing, dustproof more, at electric power fortune dimension in-process, if the inside condition of cable grounding case will be looked over, just need open grounding case, because cable grounding case is high to sealing performance's requirement on the one hand, adopt a large amount of bolt-up more, the dismouting is inconvenient, on the other hand opens many times and closes the back and must lead to the fact the influence to sealing performance. In this case, there are some ground boxes that can check the inside without opening them.
For example, patent document CN208874258U proposes a cross-connection box grounding box with an observation window, which includes a box body, a box cover, and an internal device disposed inside the box body, wherein a flange surface extends from the periphery of the box body, and mounting holes are disposed on the flange surface at intervals; the case lid sets up the mounting hole at the interval all around be provided with the observation window in the middle of the case lid, the observation window includes: the observation window base is fixed on the box cover, the O-shaped sealing ring is placed on the observation window base, the bulletproof glass is placed on the O-shaped sealing ring, and the bulletproof glass pressing ring presses the bulletproof glass and is fixed with the observation window base; and mounting holes in the flange surface on the periphery of the box body are aligned with mounting holes on the periphery of the box cover and are fixed through bolts.
Still put forward as patent document CN111064157A a take visual power cable cross interconnection ground box of light, including cross interconnection ground box body and cross interconnection ground box chamber door, be provided with the observation window on the cross interconnection ground box chamber door, the observation window includes the fixed frame of observation window, sealed pad and printing opacity glass, the fixed frame of observation window is located on the cross interconnection ground box chamber door casing, outer terminal surface articulates there is outer broken backplate of preventing, the inside light that is provided with of cross interconnection ground box body, the light passes through the battery power supply in the power pack to it closes by on-off switch control.
The ground connection case that above-mentioned patent proposed all can observe inside situation under the condition of not opening, nevertheless can not look over inside humiture data.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, to prior art not enough, provide a cable grounding box.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a cable grounding box comprises a box cover and a box body, wherein a wire pipe for a cable to enter and exit is arranged on the side face of the box body, outer edges are arranged on the periphery of the top of the box body, and through holes for fixing the box cover through bolts are formed in the outer edges; the box cover is provided with an observation hole and a hygrothermograph for displaying the temperature and humidity in the grounding box, the observation hole is arranged in a hollow manner, and a concave lens is arranged in the observation hole; and the tail end of the line pipe is provided with a sealing joint.
Further, the sealing joint is in threaded connection with the line pipe, and a sealing ring is arranged at the joint.
Furthermore, a sealing gasket is arranged between the box cover and the box body.
Further, the observation holes are two in total.
Furthermore, a handle is arranged on the side face of the box body.
Furthermore, a lifting handle is arranged at the top of the box cover.
Furthermore, the bottom of the box body is provided with a mounting foot plate.
Furthermore, the box cover, the box body and the wire pipe are all made of stainless steel materials.
The utility model has the advantages as follows:
the utility model discloses a case lid is provided with observation hole and warm and humid acidimeter, in the electric power fortune dimension in-process, need not open the grounding box and can look over the inside situation of grounding box, look over the humiture data of grounding box inside; the utility model is provided with the concave lens in the observation hole, which can increase the observation visual field and can observe the internal situation of the grounding box without dead angles; the utility model discloses be provided with two observation holes, when utilizing one of them observation hole to observe, the other one is observed the hole and can be through natural light or flashlight light filling, can improve the inside luminance of ground connection case, is convenient for observe.
The utility model discloses be provided with sealed the pad between case lid and box, be provided with cable sealing joint at the end of spool, have good waterproof, dampproofing, dustproof sealing new performance etc. can prevent that ground connection incasement part from receiving the erosion of rainwater, steam or dust and impaired.
The utility model discloses different according to the internal connection mode, adjustable be direct ground connection case, protection grounding box or alternately interconnected grounding box, can be applicable to multiple power cable system. Adopt the utility model discloses can avoid thunderbolt and response overvoltage to the harm of cable sheath, can ensure power line safe operation, improve power cable's life.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1: the utility model discloses embodiment 1's schematic structure diagram.
FIG. 2: the utility model discloses embodiment 2 box's structural schematic.
FIG. 3: the utility model discloses embodiment 3 box cover's schematic structure.
FIG. 4: the utility model discloses embodiment 4's schematic structure diagram.
The device comprises a box cover 1, a box body 11, a handle 2, a box body 21, an outer edge 22, a mounting foot plate 23, a handle 3, a sealing gasket 3, a wire pipe 4, a sealing joint 41, a hygrothermograph 5, an observation hole 6 and a protector 7.
Detailed Description
For a better understanding of the present invention, the following embodiments and the accompanying drawings are used to further clarify the content of the present invention, but the protection of the present invention is not limited to the following embodiments. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific manner, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1, the present embodiment provides a directly grounded grounding box suitable for a three-phase power cable. The grounding box is of a box-shaped structure, and metal protective layers of the three-phase power cable are mutually connected through a busbar inside the grounding box and then grounded through the grounding cable; one end of the grounding cable is connected with the bus bar, and the other end of the grounding cable is grounded.
Ground connection case includes case lid 1 and box 2, and the side of box 2 is provided with power cable inlet wire and supplies to connect the spool 4 of earth's cable outgoing line, and this embodiment spool 4 is total 4, and wherein three confession three-phase power cable inlet wire, the other one supplies to connect the earth's cable outgoing line.
The periphery of the top of the box body 2 is provided with an outer edge 21, and the outer edge 21 is provided with a plurality of through holes for fixing the box cover 1 by bolts; the bottom of box 2 is provided with the installation sole 22 that is used for installing the ground connection case, and the fretwork is provided with microscler mounting hole on the installation sole 22.
The box cover 1 is fixed on the box body 2 through bolts, a plurality of through holes for mounting bolts to pass through are arranged on the box cover 1, and the positions of the through holes are matched with the positions of the through holes on the outer edge 21 of the box body 2; in order to check the internal condition of the grounding box in the operation and maintenance process, a hygrothermograph 5 and an observation hole 6 are arranged on the box cover 1 of the embodiment, the hygrothermograph 5 can display the temperature and the humidity in the grounding box, the observation hole 6 is arranged in a hollow manner, a concave lens is arranged in the observation hole, the observation visual field can be increased by adopting the concave lens, and the internal condition of the grounding box can be observed without dead angles; this embodiment is provided with two observation holes 6, and when utilizing one of them observation hole 6 to observe, another one observation hole 6 can improve the inside luminance of ground connection case through natural light or flashlight light filling, is convenient for observe.
In order to prevent internal components of the grounding box from being damaged due to erosion of rainwater and moisture, the grounding box provided by the embodiment adopts a sealing structure. A sealing gasket 3 is arranged between the box cover 1 and the box body 2, and the sealing gasket 3 can be a rubber gasket in specific implementation; in order to seal an internal gap left after a cable passes through the conduit 4, in the embodiment, the tail end of the conduit 4 is provided with a sealing joint 41, a rubber cylinder is arranged inside the sealing joint 41, the rubber cylinder is sleeved on the cable, and the rubber cylinder can be contracted and sealed when the sealing joint 41 is screwed down; the tail end of the conduit 4 is provided with internal threads, the sealing joint 41 is provided with external threads, the sealing joint 41 is connected with the conduit 4 through threads, and a sealing ring made of rubber is arranged at the joint of the sealing joint 41 and the conduit 4; the thermometer and hygrometer 5 and the concave lens in the observation hole 6 are installed, and the surrounding gaps are sealed by sealant or rubber rings.
In order to improve the corrosion resistance and the outdoor service life of the grounding box, the box cover 1, the box body 2, the wire pipe 4 and the sealing joint 41 of the grounding box provided by the embodiment are made of stainless steel materials, and can also be made of SMC composite materials.
Example 2:
compared with the grounding box provided by the embodiment 1, the grounding box provided by the embodiment is mainly improved as follows: the side of the box body 2 is provided with a handle which is convenient to carry.
Referring to fig. 2, two opposite side surfaces of the box body 2 of the embodiment are provided with handles 23, so that the grounding box can be lifted by the handles 23 for carrying.
Example 3:
compared with the grounding box provided by the embodiment 1, the grounding box provided by the embodiment is mainly improved as follows: the top of the box cover 1 is provided with a handle which is convenient to carry.
Referring to fig. 3, the top of the case cover 1 of the present embodiment is provided with two handles 11, and the ground case can be lifted by the handles 11 for carrying.
Example 4:
compared with the grounding box provided by the embodiment 1, the grounding box provided by the embodiment is mainly improved as follows: the embodiment provides a grounding box for protecting grounding.
Referring to fig. 4, a protector 7 is arranged in the box body 2, the metal sheath of the single-phase power cable is respectively connected with one end of the protector 7, the other end of the protector 7 is connected to the bus bar, and finally, grounding is completed through a grounding cable, one end of the grounding cable is connected with the bus bar, and the other end of the grounding cable is grounded.
The protector 7 is a cable sheath protector, and when the induced voltage or fault overvoltage of the cable sheath reaches a limit value, the protector 7 can release the current on the cable sheath, so that the safe operation of a power line is ensured, and the service life of the power cable is prolonged.
The utility model discloses can be different according to the internal connection mode, the adjustment is direct ground connection case (embodiment 1), protection ground connection case (embodiment 4) or alternately interconnected ground connection case, can be applicable to multiple power cable system.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a cable grounding box, includes case lid and box, the side of box is provided with the spool that supplies the cable business turn over, its characterized in that: the periphery of the top of the box body is provided with outer edges, and through holes for fixing the box cover through bolts are formed in the outer edges; the box cover is provided with an observation hole and a hygrothermograph for displaying the temperature and humidity in the grounding box, the observation hole is arranged in a hollow manner, and a concave lens is arranged in the observation hole; and the tail end of the line pipe is provided with a sealing joint.
2. The cable grounding box of claim 1, wherein: the sealing joint is in threaded connection with the line pipe, and a sealing ring is arranged at the joint.
3. The cable grounding box of claim 1, wherein: and a sealing gasket is arranged between the box cover and the box body.
4. The cable grounding box of claim 1, wherein: the number of the observation holes is two.
5. The cable grounding box of claim 1, wherein: the side of the box body is provided with a handle.
6. The cable grounding box of claim 1, wherein: the top of the box cover is provided with a handle.
7. The cable grounding box of claim 1, wherein: the bottom of the box body is provided with a mounting foot plate.
8. The cable grounding box of claim 1, wherein: the case lid, the case body with the spool all adopts stainless steel material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120242333.0U CN214314388U (en) | 2021-01-28 | 2021-01-28 | Cable grounding box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120242333.0U CN214314388U (en) | 2021-01-28 | 2021-01-28 | Cable grounding box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214314388U true CN214314388U (en) | 2021-09-28 |
Family
ID=77831019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120242333.0U Expired - Fee Related CN214314388U (en) | 2021-01-28 | 2021-01-28 | Cable grounding box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214314388U (en) |
-
2021
- 2021-01-28 CN CN202120242333.0U patent/CN214314388U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210928 |