CN205985379U - Electric power grounding grid - Google Patents

Electric power grounding grid Download PDF

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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
Authority
CN
China
Prior art keywords
straight tube
tube section
steel pipe
outline
seamless steel
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Withdrawn - After Issue
Application number
CN201620477632.1U
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Chinese (zh)
Inventor
徐志强
刁绍杰
王栋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haiyang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
Haiyang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Haiyang Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical Haiyang Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority to CN201620477632.1U priority Critical patent/CN205985379U/en
Application granted granted Critical
Publication of CN205985379U publication Critical patent/CN205985379U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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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

A kind of electric power grounding grid
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)

1.一种电力接地网,包括封闭的外边框及设于所述外边框内的均压带,其特征在于,所述均压带包括直管段及设于所述直管段上的螺旋翅片,所述螺旋翅片由钢带在所述直管段的外壁上螺旋绕制焊接而成,所述螺旋翅片上还设有凹凸皱褶,所述外边框的四周呈圆弧连接,所述外边框上设有接地引线连接点。1. A power grounding grid, comprising a closed outer frame and a pressure equalizing belt arranged in the outer frame, wherein the pressure equalizing belt includes a straight pipe section and spiral fins arranged on the straight pipe section , the spiral fins are formed by spirally winding and welding a steel strip on the outer wall of the straight pipe section, and the spiral fins are also provided with concavo-convex wrinkles. There is a ground lead connection point on the frame. 2.根据权利要求1所述的电力接地网,其特征在于,所述直管段为无缝钢管或紫铜管,所述无缝钢管或紫铜管的直径为10~40毫米,所述钢带的宽度为10~50毫米。2. The power grounding grid according to claim 1, wherein the straight pipe section is a seamless steel pipe or a copper pipe, and the diameter of the seamless steel pipe or the copper pipe is 10 to 40 mm, and the steel The width of the belt is 10-50 mm. 3.根据权利要求2所述的电力接地网,其特征在于,钢带的厚度为0.2~1毫米。3. The power grounding grid according to claim 2, characterized in that the thickness of the steel strip is 0.2-1 mm. 4.根据权利要求2所述的电力接地网,其特征在于,所述无缝钢管及螺旋翅片均有镀锌层。4. The power grounding grid according to claim 2, characterized in that the seamless steel pipe and the spiral fins have galvanized layers.
CN201620477632.1U 2016-05-24 2016-05-24 Electric power grounding grid Withdrawn - After Issue CN205985379U (en)

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

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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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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GR01 Patent grant
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20170222

Effective date of abandoning: 20180619