CN204928014U - Direct grounding box of formula of burying - Google Patents
Direct grounding box of formula of burying Download PDFInfo
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- CN204928014U CN204928014U CN201520727776.3U CN201520727776U CN204928014U CN 204928014 U CN204928014 U CN 204928014U CN 201520727776 U CN201520727776 U CN 201520727776U CN 204928014 U CN204928014 U CN 204928014U
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- insulation board
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- casing
- binding post
- direct grounding
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Abstract
The utility model provides a direct grounding box of formula of burying belongs to the electrical technology field. This direct grounding box of formula of burying includes: the box, be that square hollow structure sets up and direct landfill in ground, the thickness <= 5mm of 1mm <= box, the insulation board is the bar setting and by epoxy resin material moulding by casting, the insulation board erects the box middle part, it is listed as binding post to be equipped with one on the up end of insulation board, the copper bar just is used for being connected simultaneously each binding post with the perpendicular setting of insulation board, the wire barrel, be a setting on the box lateral wall and with the binding post one -to -one, the wiring hole of passing the box is seted up at the wire barrel middle part, ground terminal for ground connection and setting link to each other on the box lateral wall and with the copper bar. This direct grounding box of formula of burying has the reliable operation, can ensure the advantage of cable safe operation.
Description
Technical field
The utility model belongs to technical field of electricity, relates to a kind of buried direct grounding box, particularly a kind of buried direct grounding box being applicable to the grounding system of power cable.
Background technology
In daily life, need to use grounding box in the grounding system of power cable, it is also known as earthing box for electric cable.Grounding box puts earth connection, plays protective earthing line.Grounding box and ground connection busbar one act on, and collect the connection device of earth connection exactly.Grounding box comprises direct grounding box, and inner containing connecting copper bar, copper tip etc., direct grounding box is used for the direct ground connection of cable sheath, for ensureing that cable running safety makes outstanding contributions.
In prior art, direct grounding box structural design is simple, and after long-term work, its functional reliability reduces, and have impact on the fail safe that cable runs.
In sum, for solving the structural deficiency of existing direct grounding box, need the buried direct grounding box designing a kind of reasonable in design, reliable operation, cable running safety can be guaranteed.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of reasonable in design, reliable operation, can guarantee the buried direct grounding box of cable running safety.
The purpose of this utility model realizes by following technical proposal: a kind of buried direct grounding box, comprising:
Casing, the hollow structure that is square arranges and is directly embedded in ground, the thickness≤5mm of 1mm≤casing;
Insulation board, is arranged in bar shaped and by epoxide resin material moulding by casting, described insulation board is erected in the middle part of described casing, and the upper surface of described insulation board is provided with a row binding post;
Copper bar, to be arranged and for being connected each binding post simultaneously with insulation board is vertical;
Wire barrel, to be arranged on wall box in row and with binding post one_to_one corresponding, offer the wiring hole through casing in the middle part of described wire barrel;
Earth terminal, to be arranged on wall box for ground connection and to be connected with copper bar.
As further improvement of the utility model, be provided with at least two in the middle part of described bottom half and work air holes, be arranged with many groups at bottom half outer edge place and journal stirrup is installed.
As further improvement of the utility model, described casing, wire barrel, earth terminal three obtain by stainless steel material is one-body molded.
As further improvement of the utility model, described binding post is one-body molded obtained by H62 brass material, and described copper bar is one-body molded obtained by T2 red copper material, and shaping after copper bar through zinc-plated process.
As further improvement of the utility model, the thickness of described casing is 1.5mm, and the thickness of described insulation board is 10mm.
As further improvement of the utility model, described binding post is set to four.
Based on technique scheme, the utility model embodiment at least can produce following technique effect: overall construction design is reasonable, coordinate closely between casing and each parts of its inside, during work, access power cable in the wiring hole of wire barrel, earth terminal is connected with copper bar and ground connection, and the insulation board obtained by epoxide resin material coordinates closely with binding post, copper bar, ensure that the electrical insulation properties of box house, ensure that the reliability that power cable ground connection works, integral ground case reliable operation, can guarantee cable running safety.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail, wherein:
Fig. 1 is the structural representation of the utility model one preferred embodiment.
Fig. 2 is the structural representation at another visual angle of Fig. 1.
In figure, 10, casing; 11, journal stirrup is installed; 20, insulation board; 30, binding post; 40, copper bar; 50, wire barrel; 51, wiring hole; 60, earth terminal.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
A kind of buried direct grounding box of the utility model protection, for the direct ground connection of cable sheath, is applicable to the grounding system of power cable, is particularly useful in the grounding system of the single core XLPE power cables such as 35kV, 66kV, 110kV and 220kV.
Existing direct grounding box structural design is simple, and after long-term work, its functional reliability reduces, and have impact on the fail safe that cable runs.Therefore, it is necessary for designing a kind of more rational buried direct grounding box.
Below in conjunction with the elaboration that Fig. 1 to Fig. 2 carries out specifically to the technical scheme that the utility model provides.
As shown in Figure 1 to Figure 2, this buried direct grounding box comprises:
Casing 10, the hollow structure that is square arranges and is directly embedded in ground, the thickness≤5mm of 1mm≤casing 10;
Insulation board 20, is arranged in bar shaped and by epoxide resin material moulding by casting, insulation board 20 is erected in the middle part of described casing 10, and the upper surface of insulation board 20 is provided with a row binding post 30;
Copper bar 40, to be arranged and for being connected each binding post 30 simultaneously with insulation board 20 is vertical;
Wire barrel 50, to be arranged on casing 10 sidewall in row and with binding post 30 one_to_one corresponding, offer the wiring hole 51 through casing 10 in the middle part of described wire barrel 50;
Earth terminal 60, to be arranged on casing 10 sidewall for ground connection and to be connected with copper bar 40.
In the present case, direct grounding box is buried direct grounding box, and during installation, casing 10 is directly embedded in ground, and preferred casing 10 is through plastic-blasting process, and good looking appearance, has the advantages such as corrosion-resistant, favorable sealing property and durable in use; Preferably on casing 10, detachably case lid is installed, makes grounding box installation and maintenance convenient, also ensure that the sealing of structure.
This buried direct grounding box is used for the direct ground connection of cable sheath, and earth terminal 60, for connecting earth connection and earth connection being connected nigh soil or earth electrode, ensures stability and the reliability of grounding box work.
This buried direct grounding box in an initial condition, overall construction design is reasonable, coordinate closely between casing 10 and each parts of its inside, during work, access power cable in the wiring hole 51 of wire barrel 50, earth terminal 60 is connected with copper bar 40 and ground connection, and the insulation board 20 obtained by epoxide resin material coordinates with binding post 30, copper bar 40 closely, ensure that the electrical insulation properties of casing 10 inside, ensure that the reliability that power cable ground connection works, integral ground case reliable operation, can guarantee cable running safety.
It should be added that: the insulation board 20 in this case is by epoxide resin material moulding by casting.Epoxy resin is the organic compound containing two or more epoxide groups in general reference molecule, and except indivedual, their relative molecular mass is not high.The molecular structure of epoxy resin be with in strand containing active epoxide group for its feature, epoxide group can be positioned at the end of strand, centre or structure circlewise.Due in molecular structure containing active epoxide group, make they can with polytype curing agent generation cross-linking reaction and formed and insoluble there is the cancellated high polymer of three-dimensional.Macromolecular compound containing epoxide group in all molecular structures is referred to as epoxy resin.
Epoxide resin material after solidification has good physics, chemical property, and it has excellent adhesive strength to the surface of metal and nonmetallic materials, and dielectric property are good, set shrinkage is little, product size good stability, and hardness is high, pliability is better, to alkali and most of solvent-stable.Such insulation board 20 vibrational power flow, makes insulation board 20 be connected closely with casing 10, binding post 30, copper bar 40, greatly improves the electrical insulation properties of casing 10 inside, according to actual needs, epoxide resin material can be replaced with insulating material.
Concretely, preferably, bottom casing 10, middle part is provided with at least two and works air holes, bottom casing 10, outer edge place is arranged with many groups and installs journal stirrup 11, preferred installation journal stirrup 11 is one-body molded with casing 10, casing 10 is installed more reliable, saves production cost.
Above-mentioned ventilation hole be arranged so that casing 10 inside not easily condensation, make each element not oxidizable and aging, ensure that the reliability of integral ground case work, extend useful life.
Further preferably, for enhancing productivity and saving production cost, preferred casing 10, wire barrel 50, earth terminal 60 three obtain by stainless steel material is one-body molded, and such structural design not only ensure that the working strength of casing 10, has also ensured the functional reliability of integral ground case.
For making electric conductivity good, preferred binding post 30 is one-body molded obtained by H62 brass material, and copper bar 40 is one-body molded obtained by T2 red copper material, and shaping after copper bar 40 through zinc-plated process.Adopt the fit structure of brass and red copper, binding post 30 is connected with power cable closely, electric current transmits steadily, ensure that stability and the fail safe of work.
Further, the thickness of preferred above-mentioned casing 10 is 1.5mm, and the thickness of insulation board 20 is 10mm.Such structural design, has not only saved production cost, also makes grounding box topology layout compacter, reasonable, makes buried work convenient.
Trend that binding post 30 in preferred this case is set to four and distance between adjacent line terminals 30 tapers off, optimizes the space layout of casing 10 inside under ensure that functional reliability prerequisite.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (6)
1. a buried direct grounding box, is characterized in that: comprising:
Casing, the hollow structure that is square arranges and is directly embedded in ground, the thickness≤5mm of 1mm≤casing;
Insulation board, is arranged in bar shaped and by epoxide resin material moulding by casting, described insulation board is erected in the middle part of described casing, and the upper surface of described insulation board is provided with a row binding post;
Copper bar, to be arranged and for being connected each binding post simultaneously with insulation board is vertical;
Wire barrel, to be arranged on wall box in row and with binding post one_to_one corresponding, offer the wiring hole through casing in the middle part of described wire barrel;
Earth terminal, to be arranged on wall box for ground connection and to be connected with copper bar.
2. buried direct grounding box according to claim 1, is characterized in that: be provided with at least two in the middle part of described bottom half and work air holes, is arranged with many groups installs journal stirrup at bottom half outer edge place.
3. buried direct grounding box according to claim 1 and 2, is characterized in that: described casing, wire barrel, earth terminal three obtain by stainless steel material is one-body molded.
4. buried direct grounding box according to claim 1 and 2, is characterized in that: described binding post is one-body molded obtained by H62 brass material, and described copper bar is one-body molded obtained by T2 red copper material, and shaping after copper bar through zinc-plated process.
5. buried direct grounding box according to claim 1 and 2, is characterized in that: the thickness of described casing is 1.5mm, and the thickness of described insulation board is 10mm.
6. buried direct grounding box according to claim 1 and 2, is characterized in that: described binding post is set to four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520727776.3U CN204928014U (en) | 2015-09-18 | 2015-09-18 | Direct grounding box of formula of burying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520727776.3U CN204928014U (en) | 2015-09-18 | 2015-09-18 | Direct grounding box of formula of burying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204928014U true CN204928014U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520727776.3U Active CN204928014U (en) | 2015-09-18 | 2015-09-18 | Direct grounding box of formula of burying |
Country Status (1)
| Country | Link |
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| CN (1) | CN204928014U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932440A (en) * | 2016-06-08 | 2016-09-07 | 国网四川省电力公司自贡供电公司 | Grounding device and grounding method applied to power field |
| CN109301783A (en) * | 2018-11-15 | 2019-02-01 | 国家电网有限公司 | A kind of temporary grounding terminal box within the walls |
-
2015
- 2015-09-18 CN CN201520727776.3U patent/CN204928014U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932440A (en) * | 2016-06-08 | 2016-09-07 | 国网四川省电力公司自贡供电公司 | Grounding device and grounding method applied to power field |
| CN109301783A (en) * | 2018-11-15 | 2019-02-01 | 国家电网有限公司 | A kind of temporary grounding terminal box within the walls |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 315137 Zhejiang province Ningbo City Yunlong Industrial Zone Yinzhou District Yunlong Town Cloud Hui Lu No. 211 Patentee after: Ningbo East power Polytron Technologies Inc Address before: 315137 Zhejiang province Ningbo City Yunlong Industrial Zone Yinzhou District Yunlong Town Cloud Hui Lu No. 211 Patentee before: NINGBO JOHOST CABLE ACCESSORIES CO., LTD. |