CN205985379U - Electric power grounding grid - Google Patents
Electric power grounding grid Download PDFInfo
- Publication number
- CN205985379U CN205985379U CN201620477632.1U CN201620477632U CN205985379U CN 205985379 U CN205985379 U CN 205985379U CN 201620477632 U CN201620477632 U CN 201620477632U CN 205985379 U CN205985379 U CN 205985379U
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- CN
- China
- Prior art keywords
- helical fin
- steel pipe
- electric power
- straight tube
- tube section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a the utility model relates to a power equipment grounding technology field especially relates to an electric power grounding grid. It includes confined outline and locates voltage -sharing area in the outline, its characterized in that, the voltage -sharing area includes the straight tube section and locates helical fin in the straight tube section, the helical fin is in by the steel band spiral coiling welding forms on the outer wall of straight tube section, still be equipped with unsmooth fold on the helical fin, outline's the circular arc that is is all around connected, the last ground lead tie point that is equipped with of outline. The straight tube section is seamless steel pipe or copper tubing, the diameter of seamless steel pipe or copper tubing is 10~40 millimeters, the width of steel band is 10~50 millimeters. The beneficial effects are that: under the same length of straight tube section, the same internal diameter prerequisite, several times long -pending of being ordinary seamless steel pipe of its contact surface have improved grounding effects greatly.
Description
Technical field
This utility model is related to power equipment grounding technology field, more particularly, to a kind of electric power grounding grid.
Background technology
《Power equipment grounding technology code》Regulation, " power plant, the grounding device of electric substation's power equipment, except using certainly
So be grounded external, no matter adopting which kind of artificial earth electrode, such as well formula ground connection, deep drilling formula ground connection, Down conductor etc., all should lay with
Manual earth network based on horizontal grounding objects ".In power wiring systems, the ground connection performance of lightning protection electrode is good and bad and reliable
Property, directly affects electrical equipment, normally effectively the running of line facility.The safe and stable operation to power system for the grounding technology
There is important impact, and the implementation of the expansion of generator capacity, EHV transmission and D.C. high voltage transmission makes system voltage
Level improves, and earth current constantly increases, and these all propose higher to the aspect such as safe and reliable, economic, effective of grounded screen
Requirement.Touch voltage and step voltage direct relation arrives at a station the safety of interior personnel and equipment, therefore, how to reduce grounded screen electricity
Resistance, thus reducing touch voltage and step voltage is unanimously research worker focus of attention.Using common more than existing grounding body
Round steel or angle steel are made, or have from screw-thread steel, but the earthed surface of grounding body is long-pending still less, affects impedance ground and effect
Really.
Utility model content
This utility model is directed to above-mentioned the deficiencies in the prior art, provides a kind of power ground that can effectively reduce earth resistance
Net.
The technical scheme that this utility model solves above-mentioned technical problem is as follows：A kind of electric power grounding grid, outer including closing
Frame and located at described outside inframe equal pressure zone it is characterised in that described equal pressure zone includes straight length and located at described straight tube
Helical fin in section, by steel band, helically coiling on the outer wall of described straight length is welded described helical fin, described spiral shell
Concavo-convex gauffer is additionally provided with rotation fin, the surrounding of described outer rim is in circular sliding slopes, and described outer rim is provided with ground lead even
Contact.
The beneficial effects of the utility model are：Due to being provided with helical fin on straight length, described helical fin also sets
There is concavo-convex gauffer, under the premise of straight length equal length, same inner diameter, its contact surface area is the several times of common seamless steel pipe,
Substantially increase earthing effect.Especially consider the Kelvin effect of circuit, the contact area increasing earthing pole with soil is just had a mind to very much
Justice.
By a diameter of 20 millimeters, as a example length is one meter of steel pipe, if used as earthing pole or equal pressure zone, itself and soil
The contact area of earth is about 628 square centimeters；And using the scheme of helical fin is set on described straight length, such as helical wing plate
Width be 15 millimeters, coiling spacing adopt 20 millimeters, then approximately increased 1800 square centimeters of contact area (here consider steel
With two sides), and if it is considered that the gauffer of steel band then area can be bigger, undoubtedly can substantially reduce earth resistance, to improving ground connection
The aspect performance such as safe and reliable, economic, effective of net all has very significant meaning.
On the basis of technique scheme, this utility model can also do following improvement.
Further, described straight length is seamless steel pipe or copper tube, described seamless steel pipe or copper tube a diameter of 10～
40 millimeters, the width of described steel band is 10～50 millimeters, and described outer rim is band steel.
Further, the thickness of steel band is 0.2～1 millimeter.
Beneficial effect using above-mentioned further scheme is, can be according to different grounding requirement reasonable materials, the side of drawing materials
Just, make easily.
Further, described seamless steel pipe and helical fin all have zinc coat.
Beneficial effect using above-mentioned further scheme is, helical fin aluminize after making process it is ensured that
Overall corrosion resistance.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structure partial enlarged drawing of the equal pressure zone of this utility model；
Fig. 3 is the A-A of Fig. 2 to cross section structure diagram.
In Fig. 1 to Fig. 3,1, outer rim；2nd, straight length；3rd, helical fin；4th, ground lead junction point；5th, concavo-convex wrinkle
Pleat.
Specific embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example is served only for explaining this practicality
New, it is not intended to limit scope of the present utility model.
As shown in Figures 1 to 3, a kind of electric power grounding grid, including the outer rim 1 and equal in described outer rim 1 of closing
Pressure zone, described equal pressure zone includes straight length 2 and the helical fin 3 on described straight length 2, and described helical fin 3 is by steel band
On the outer wall of described straight length 2, helically coiling is welded, and described helical fin 3 is additionally provided with concavo-convex gauffer 5, described outside
The surrounding of frame 1 is in circular sliding slopes, and described outer rim 1 is provided with ground lead junction point 4.In the specific implementation, estimate that design needs
Will, be arranged in parallel in described outer rim 1 multiple described equal pressure zones.Described equal pressure zone two ends be described straight length 2 solderable
In described outer rim 1.
Described straight length 2 is seamless steel pipe or copper tube, a diameter of 10～40 millimeters of described seamless steel pipe or copper tube,
The width of described steel band is 10～50 millimeters.Described outer rim 1 is band steel.
The thickness of steel band is 0.2～1 millimeter.
Described seamless steel pipe and helical fin 3 all have zinc coat.
Equal pressure zone making step of the present utility model is as follows：, using not plating of diameter 38mm taking above-mentioned preferred material as a example
The seamless steel pipe of zinc；From the steel band of thick 0.2mm, wide 30mm, and after suppressing by mold formation gauffer steel band；After suppressing
Gauffer steel band seamless steel pipe outer surface around the home and is welded in spacing 40mm spiral, and ground lead is set, tube head in welding
With conical head.Take overall outer surface pickling, the mode of galvanizing again, define in fin outer surface and outer surface of steel tube
One complete zinc coat.
Electric power grounding grid of the present utility model is relatively more suitable for disposably burying in construction, and ensures Soil Surrounding or swollen
The abundant compacting of profit soil.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvement made etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (4)
1. a kind of electric power grounding grid, the outer rim including closing and located at described outside inframe equal pressure zone it is characterised in that institute
State equal pressure zone and include straight length and the helical fin on described straight length, described helical fin is by steel band in described straight length
Outer wall on helically coiling be welded, described helical fin is additionally provided with concavo-convex gauffer, the surrounding of described outer rim is in circular arc
Connect, described outer rim is provided with ground lead junction point.
2. electric power grounding grid according to claim 1 it is characterised in that described straight length be seamless steel pipe or copper tube,
Described seamless steel pipe or a diameter of 10～40 millimeters of copper tube, the width of described steel band is 10～50 millimeters.
3. electric power grounding grid according to claim 2 is it is characterised in that the thickness of steel band is 0.2～1 millimeter.
4. electric power grounding grid according to claim 2 it is characterised in that described seamless steel pipe and helical fin all have zinc-plated
Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620477632.1U CN205985379U (en) | 2016-05-24 | 2016-05-24 | Electric power grounding grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620477632.1U CN205985379U (en) | 2016-05-24 | 2016-05-24 | Electric power grounding grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205985379U true CN205985379U (en) | 2017-02-22 |
Family
ID=58019851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620477632.1U Withdrawn - After Issue CN205985379U (en) | 2016-05-24 | 2016-05-24 | Electric power grounding grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205985379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789928A (en) * | 2016-05-24 | 2016-07-20 | 国网山东省电力公司海阳市供电公司 | Electric power grounding grid |
-
2016
- 2016-05-24 CN CN201620477632.1U patent/CN205985379U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789928A (en) * | 2016-05-24 | 2016-07-20 | 国网山东省电力公司海阳市供电公司 | Electric power grounding grid |
| CN105789928B (en) * | 2016-05-24 | 2018-06-19 | 广东圣辉电力工程有限公司 | A kind of electric power grounding grid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170222 Effective date of abandoning: 20180619 |
|
| AV01 | Patent right actively abandoned |