Grounding rationing method for cathode protection based on sacrificial anode protection

A sacrificial anode and cathodic protection technology, which is applied in the field of cathodic protection grounding quota based on the sacrificial anode method, can solve problems such as unsuitable installation costs and large differences in construction processes, and achieve the effect of standardizing project management

Inactive Publication Date: 2016-12-21
STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
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Problems solved by technology

The sacrificial anode method and the impressed current method cathodic protection grounding construction process are quite different, and the installation cost of the sacrificial anode method cathodic protection grounding project is not suitable for reference to the impressed current method cathodic protection grounding budget quota

Method used

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  • Grounding rationing method for cathode protection based on sacrificial anode protection
  • Grounding rationing method for cathode protection based on sacrificial anode protection
  • Grounding rationing method for cathode protection based on sacrificial anode protection

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Embodiment Construction

[0051] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0052] like figure 1 As shown, this embodiment provides a cathodic protection grounding rating method based on a sacrificial anode method, which specifically includes the following steps:

[0053] Step S1: Design a sacrificial anode method cathodic protection grounding scheme: choose the type of sacrificial anode, determine the number of sacrificial anodes, calculate the service life of the sacrificial anode, and arrange the sacrificial anode and its accessories;

[0054] Step S2: Measure the quota labor and material consumption for the cathodic protection grounding project.

[0055] In this embodiment, the step S1 specifically includes the following steps:

[0056]Step S11: select the type of the sacrificial anode, when the soil resistivity is greater than 10Ω·m, use a magnesium alloy with a low electrode potential and a large driving voltage as the sa...

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Abstract

The invention relates to a grounding rationing method for cathode protection based on sacrificial anode protection. The method comprises the following steps: designing a cathode protection grounding scheme based on the sacrificial anode protection: selecting the sacrificial anode types, determining the sacrificial anode quantity, accounting the usage life of the sacrificial anode, and arranging the sacrificial anode and its attachment; and then measuring and calculating the rationing labor and material consumption amounts for the cathode protection grounding engineering. The method provides the basis for prepared investment estimation at a feasibility study phase, prepared investment budgetary estimation at a pre-set phase, bidding quotation at an enforcement phase and settlement at a construction completion phase for the cathode protection grounding engineering. The method also provides controlled bidding price and bidding quotation for the reasonable system engineering, whole process and multi-level control for the engineering cost can be carried out by the construction companies through an each-phase construction scheme, engineering management is standardized, and the method can provide experience for same kinds of works in the industry.

Description

technical field [0001] The invention relates to the field of evaluation of electric power construction projects, in particular to a cathodic protection grounding quota method based on a sacrificial anode method. Background technique [0002] In recent years, in the construction of power grid projects such as substations and wind farm booster stations in coastal areas of my country, there are many cases where the soil resistivity of the site is below 20Ω·m. According to Article 7.2.1 of DL / T5394-2007 "Technical Guidelines for Corrosion Protection of Underground Metal Structures in Power Engineering": When the soil resistivity is 20Ω·m and below, the grounding grid of the power plant should adopt carbon steel plus cathodic protection anticorrosion measures, and grounding materials Copper should not be used; the substation grounding grid should be made of carbon steel with cathodic protection and anti-corrosion measures. When the technology and economy are reasonable, copper ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/04
CPCC23F13/04C23F2213/10
Inventor 林瑞宗张星星施晴许超晨
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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