CN201072810Y - Permeable conductive earth modular structure - Google Patents

Abstract

The utility model provides a penetrable conductive grounding module structure, which relates to the technology field of lightning protection grounding. The utility model aims at overcoming defects of existing grounding resistance reducing products, such as slow resistance reducing effect, instability, insecurity and big erosion. The technical scheme of the utility model consists of a feed connecting bar, a conductive electrode main body and a penetrable electrode; wherein, the lead connecting end of the feed connecting bar represents in L shaped structure, the feed bar electrode core penetrates the conductive electrode main body and is connected with the penetrable electrode, the conductive electrode body adopts graphite and petroleum coke material. By comparing the utility model with the existing resistance reducing products, the comparative test certificates that: the grounding resistance can be reduced for about 30 per cent, the material of the conductive electrode body has stable physical property and can not be eroded.

Description

A kind of permeable conductive earthing modular structure

Technical field

The utility model relates to the lightning protection technical field, and specifically a kind of permeable electrode is the conductive earthing module that major ingredient is cooked conductive plate with graphite and oil coke.

Background technology

Before the utility model proposes, the lightning protection product is widely-used at home and abroad, and these products mainly comprise:

1) common earth mat is based on metallic conductor: as angle steel, round steel, steel pipe, copper rod, copper mesh etc., be main so far ground connection means, shortcoming is that floor space is big, the ground connection life-span is short, poor stability, uses in high soil resistivity to be difficult to produce a desired effect.

2) copper covered steel earth rod: the ground connection effect is better than steel, but the price height, construction is complicated, and it is stolen easily that meeting is used in the area of unattended duty in the open air.

3) resistance reducing effect of grounded resistance reducing agent is good, uses the nineties morely, finds that in recent years the product corrosivity of some factory is very big, has lowered earth mat useful life greatly.

4) the electrolytic ion grounding system is utilized the water absorption and the ion permeability of the compound of conductor inside, and whole system can be in the state of ion-exchange for a long time, reaches stationary value in half a year to one year.Shortcoming is the cost height, take effect slow, bigger to the corrosiveness of main earth mat, its copper electrode is stolen easily.

5) common low resistance earthing module is the earth electrode based on the conductive non-metals material, and it is made up of the nonmetallic materials and the metal electrode of good conductivity.And this low resistance earthing module life-span is long, good stability.Shortcoming is that the outside dispose procedure of conductive ion is slow, reduces earth resistance and takes effect slowly.

Summary of the invention

The purpose of this utility model provides a kind of permeable conductive earthing module, falls the resistance product and falls the resistance shortcoming slow, unstable, dangerous, that corrosivity is big that takes effect to improve existing ground connection.

In order to realize the purpose of this utility model, the technical solution of the utility model comprises an electricity feedback pitman, conductive electrode body and infiltration electrode three parts composition, wherein, the L-shaped structure of feed pitman lead-in wire link, the rod pole piece penetrates conduction polar body circle core and is connected with the ground connection infiltration utmost point, and particularly L shaped joint is easier to be connected with going between.

Cylindrical or the rectangle of conductive electrode body described in the utility model, its surface forms a lot of groove.This scraggly surface can increase diffusing flow area greatly.The infiltration utmost point described in the utility model is segment shape structure, and is connected with bolt with feed pitman earth terminal.

Conductive electrode body described in the utility model adopts graphite and petroleum coke material with carbon element to form.

The oil coke that is adopted has ensured lower resistance and thermal coefficient of expansion, and it is stable can not produce the burn into material physical property.

The resistance principle of falling of the present utility model:

With the vertical junction terrain is computation model:

Is example as Fig. 2 with DMY type earthing module, and earth resistance is in theory

$R=\frac{{\mathrm{\ρ}}_1}{2\mathrm{\πl}}\ln \frac{d_1}{d}+\frac{{\mathrm{\ρ}}_2}{2\mathrm{\πl}}\ln \frac{4l}{d_1}---\left(1\right)$

ρ in the formula ₁The resistivity of-resistance reducing agent, Ω m;

ρ ₂The resistance rate on-former stratum, Ω m;

L-vertical junction ground body length, m;

D-vertical junction terrain diameter, m;

d ₂-displacement diameter, m.

Work as ρ ₁＜＜ρ ₂, then formula (1) is rewritten as:

$R=\frac{{\mathrm{\ρ}}_2}{2\mathrm{\πd}}\ln \frac{4l}{d_1}---\left(2\right)$

So the percentage that earth resistance reduces is

$\mathrm{\&Delta;R}=[l-\left(\frac{\ln \frac{4\mathrm{<figure-callout\; id="1"\; label="l\; d"\; filenames="Y20072008523500072.png"\; state="\{\{state\}\}">l</figure-callout>}}{d_{}}}{\ln \frac{4l}{d}}\right)]\&times;100\%---\left(3\right)$

For diameter is the vertical junction terrain of 0.01m, long 0.8m, replaces when with the DMY-3 earthing module, and earth resistance reduces 27%.

The utility model and existing ground connection fall the resistance product oppose have a competition the checking bright:

Earth resistance can reduce about 30%, and the Material Physics of conduction polar body is stable, does not corrode.

Description of drawings

Accompanying drawing 1 is the permeable conductive earthing modular structure of a utility model schematic diagram;

Accompanying drawing 2 is that resistance mechanism schematic diagram falls in the utility model.

Among the figure, feed pitman 1, conductive electrode body 2, the infiltration utmost point 3.

Embodiment

The utility model is in implementation process, and the feed pitman: the pole piece of being made by Φ 14 zinc-plated rod irons has the function of water conservancy diversion and stuck-module, and L shaped joint is easier to be connected with going between.The conductive plate major ingredient adopts low electrical resistant material-graphite and oil calcining coke, the oil coke is that crude oil is after distillation separates weight matter oil, mink cell focus is again through the process of hot tearing, the product that is transformed, coke are out-of-shape, black bulk (or particle) not of uniform size, metallic luster is arranged, the particle tool multi-pore structure of coke, main element set becomes carbon, and remaining is hydrogen, oxygen, nitrogen, sulphur and metallic element.Petroleum coke itself is a fixedness carbon, volatile matter and dirt (sulphur, metallic compound, water, ash etc.).The oil coke is a crude oil after distillation separates weight matter oil, and mink cell focus transforms through the process of hot tearing again, disperses its volatile ingredient through 1350 ℃ calcining, and phosphorus content is greater than 95%, and volatility is less than 5%, and sulfur content is less than 1%.Because therefore lower resistance and the thermal coefficient of expansion of its tool be more suitable for doing the conductive earthing module.

The infiltration electrode adopts the iontophoretic injection material, utilizes ion permeability and water absorption, constantly to the earth charge releasing belt electron ion.And fully absorb airborne moisture, realize moisture absorption and reservation by the capillary principle.By deliquescent effect, the reactive electro ion is discharged in the soil, with soil and airborne water function, whole system can be in the state of ion-exchange for a long time, promote ion guide external body to discharge, with the soil resistivity around reducing.

Claims (4)

1. a permeable conductive earthing module comprises feed pitman, conductive electrode body and infiltration electrode three parts composition, it is characterized in that, and the L-shaped structure of feed pitman link, excellent pole piece penetrates electrode and is electrically connected with the infiltration utmost point.

2. by claim 1 permeable conductive earthing module, it is characterized in that cylindrical or its surface formation a lot of groove of rectangle of described conductive electrode body.

3. by claim 1 permeable conductive earthing module, it is characterized in that the described infiltration utmost point is segment shape structure, and be connected with bolt with conductive electrode with the feed pitman.

4. by claim 1 permeable earthing module, it is characterized in that described conductive electrode body adopts graphite and calcined petroleum coke material with carbon element.

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