SU877675A1

SU877675A1 - Anode earthing device

Info

Publication number: SU877675A1
Application number: SU802886995A
Authority: SU
Inventors: Фарваз Инсапович Даутов
Original assignee: Татарский Государственный Научно-Исследовательский И Проектный Институт Нефтяной Промышленности
Priority date: 1980-02-26
Filing date: 1980-02-26
Publication date: 1981-10-30

Description

Ц54) АНОДНЫЙ ЗАЗЕМЛИТЕЛЬTs54) ANODE GROUNDER

ГR

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изобретение относитс к катодной защите подземных сооружений от коррозии и передаче посто нного тока по системе провод-земл , в частности к заземлител м посто нного тока, и может быть использовано в нефт ной, газовой, энергетической промышленност х, а также в коммунальном хоз йстве.The invention relates to cathodic protection of underground structures against corrosion and transfer of direct current through a wire-to-ground system, in particular, to direct-current earthing systems, and can be used in the oil, gas, and energy industries, as well as in communal enterprises.

Известен заземлитель, содержащий токоввод во влагозащитной оболочке, в которой размещен пресс-диск 1.Known grounding, containing the current lead in a moisture-proof shell, which houses the press disk 1.

Данный эаземлнтель имеет пресс-диск дл увеличени давлени токоввода на эа:сыпку, однако применение влагозащитной оболочки yвeличивaet сопротивление заземлител . Кроме того, давление, создаваемое пресс-диском, не вл етс длительным, так как при этом создаетс одностороннее сжатие засылки с упором на грунт, который постепенно деформируетс , рассеива напр жение.This eemellntel has a press disk to increase the pressure of the current lead to the EA: dust, but the use of a waterproof sheath will increase the resistance of the earth conductor. In addition, the pressure created by the press disk is not long since this creates a one-sided compression of the link with an emphasis on the ground, which is gradually deformed, dissipating stress.

Наиболее близким к предлагаемому вл етс анодный заземлитель, содержащ й токоввод в виде пластины в углеродистой засып е 2.The closest to the present invention is an anode earthing, containing a current lead in the form of a plate in a carbon bed e 2.

Недостатком анодного заземлител вл етс большое сопротивление, св занное с наличием диэлектрической влагозащитной оболочки токоввода , и относительно иебольщое давление токоввода на засыпку, поскольку оно создаетс только весом выщележащего столба засыпки .The disadvantage of the anode earthing is the high resistance associated with the presence of the dielectric moisture-proof sheath of the current lead, and the relatively small pressure of the current lead to the backfill, since it is created only by the weight of the leaching backfill.

Цейь изобретени - снижение сопротивлени заземлител .The purpose of the invention is to reduce the earth resistance.

Указанна цель достигаетс тем, что анод-, This goal is achieved by the fact that the anode-,

10 ный заземлитель, содержащий токоввод в виде пластины д углеродистой засыпке, снабжен дополнительными пластинами, причем пластины соединены между собой электрически и расположены одна под другой с возможностью вертикального перемещени , а крайние пластины подпружинены одна относительио другой.The 10th grounding conductor, which contains a current lead in the form of a plate and a carbon bed, is provided with additional plates, the plates being electrically interconnected and arranged one below the other with the possibility of vertical movement, and the extreme plates are spring-loaded one relative to another.

На чертеже представлен анодный заземлитель, общий вид.The drawing shows the anode earthing, General view.

Claims

In hole 1, covered with coke breeze 2, a current lead is placed, consisting of the top 3, bottom 4 and intermediate 5 1 ferro-silyndic plates electrically connected to each other and to the current source with insulated wire 6 a central, insulated dielectric sheath, a rod 7, the lower end of which is deaf, and the upper threaded connection, including a nut 8 and a washer 9. The end plates are spring-loaded spring 10. To eliminate the anode solution, 1. The junction is enclosed in a dielectric cap 11. The earthing switch works as follows. After assembling the earthing switch, the coke breeze enclosed between plates 3 and 4 is clamped with the help of a nut 8 to the required pressure, and the pressure is transmitted through the filling 2 to the intermediate plate 5. The number of intermediate plates is determined depending on the depth of the hole (or length of the earthing switch) and its diameter. So, if the diameter of the oxfish is 0.2, the distance between the plates should be no more than 4 m. Then, with a copy length of 20 m, the number of plates will be 5, i.e. two extreme and three intermediate. The Peschzemzem design allows you to create the required and adjustable pyramid on the backfill enclosed between the plates, and due to the presence of several plates interconnected by the pivot, to increase the contact area between the current leads and the backfill with small current leads. The pressure created by this is not transferred to the ground, so it will be almost constant during operation. Availability also contributes to this. a spring connection between the outer plates and the rod. The high pressure (0.1-0.2 kgf / cm) between the current lead and the strut created in the proposed earthing switch results in a multiple (by a factor of 5 to 10 times) decrease in the contact resistance between the current lead and backfill and the contact resistance of the entire earthing switch. The technical and economic effect of the proposed earthing switch is provided mainly by reducing the resistance of the earthing switch and, consequently, reducing the amount of electricity lost at the anode earthing switch. The invention of the anode earthing, containing the current lead in the form of a plate in a carbon bed, is characterized in that, in order to reduce the resistance of the earthing, it is equipped with additional plates, the plates being connected electrically and arranged one below the other with the possibility of vertical movement, and the extreme plates are spring-loaded relative to each other. Sources of information taken into account in the examination 1. Authors' testimony of the USSR № 319987, cl. H 01 R 3/06, 1969.

2. USSR author's certificate number 653955, cl. C 23 F 13/00, 1973.