Mendeleevets-MGB – deep, block silicon iron anodes
Deep block groundbeds Mendeleevets-MGB are used to be installed into boreholes in such areas where the upper layers of the soil with the capacity more than 5 m have electrical resistivity more than 100 Ohm∙m and in areas with dense building or with limited access for anodic field.
1 - silicon iron electrode;
2 - connecting cable;
3 - gas outlet tube;
4 - body of the block;
5 - holder
Deep block groundbeds Mendeleevets-MGB are worked out as an alternative to heavier and bigger deep groundbeds Mendeleevets-MG.
The construction of the block groundbed was noticeably remade and simplified in order to unify the installation works. And at the same time the working element of the groundbed (silicon iron electrode) remained the same.
Each block of the groundbed includes one section with the silicon iron electrode inside. Current distribution to the block of the groundbed is provided through the connecting cable.
The kind of deep ground, consisting of groundbeds Mendeleevets-MGB (quantity of blocks in a borehole, quantity of boreholes, distance between boreholes, etc.) is determined by the project of cathodic protection.
The design provided for connection of blocks into the chain. It allows to raise current loading and to reduce transitional resistance. Connection of blocks into the chain is realized when installing groundbeds into the borehole and consists in attachment of blocks to each other with the help of a holder. Maximum quantity of the deep groundbed blocks of Mendeleevets-MGB which can be installed into a borehole is 20 pieces.
Gas that is formed while working of deep groundbed is drawn outside to the surface through the gas outlet tube. The gas outlet tube has perforation along all the height of the chain and is delivered for the the concrete order on the basis of one tube for one chain of groundbeds installed in the borehole. The length of the gas outlet tube is equal to the depth of the borehole.
The hollow space around the anode should be filled with a coke-mineral activator (KMA) produced by Chemservice in order to reduce spreading resistance of anodic current and to slow down anodic dissolution.
|Max current load, A, not more than||7,3|
|Anodic dissolution rate, kg/(A∙year), no more than||0,3|
|Dimensions of electrode working surface, mm:
- Length (height)
|Assembled anode dimensions , mm, no more than:
- length (height)
|Nominal anode weight, kg||43|
|Assembled anode weight, kg, no more than||55|
|Max quantity of groundbed blocks in the borehole, pieces, no more than||20|
|Service lifetime, years, no less than||35|
The delivery set depends on the main order parameters: quantity of blocks and the depth of the borehole for the installation. All consumables needed for the groundbed installation and their connection to the anodic line are included in the delivery set.