Underground oil tank lining structure of gas station and construction method

Abstract

The invention discloses a underground oil tank lining structure of a gas station and a construction method, and solves the problem of influence on environmental protection by the corrosion leakage of a traditional underground oil steel tank. The structure comprises a double-layer lining structure design; according to the load borne by an oil tank, the stress strength of the double-layer lining structure independent from the traditional underground oil steel tank is calculated, and the thicknesses of an outer layer, a middle gap layer and an inner-layer glass fiber reinforced composite material are determined; the dry ice derusting cleaning and the resin bottom brushing are performed on the inner surface of the oil tank; the outer layer, the middle gap layer and the inner-layer glass fiber reinforced composite material are constructed in sequence; photocuring unsaturated resins and a photocuring agent are uniformly mixed according to 100: (0.2-0.6); a ultraviolet curing lamp is used for curing; and anti-thunder and anti-static grouding leakage detecting signal outgoing lines are leaded out from an inlet hole of the oil tank by the middle gap layer. The structure has such advantages as no need of field excavation, short construction period and low comprehensive cost; and the improved oil tank has complete double-layer structure to accord with national standards.

Description

technical field [0001] The invention relates to a double-layer structure of the inner lining of an underground oil storage tank of a gas station and a construction method thereof, in particular to a structure for transforming the inner lining of an underground single-layer oil storage steel tank of a gas station into a double-layer glass fiber reinforced composite material tank structure and its construction method. The construction method belongs to the technical field of lining transformation of underground oil storage tanks in gas stations. Background technique [0002] At present, gas stations in my country generally use single-layer steel horizontal buried oil tanks. There are more than 100,000 gas stations and 400,000 oil storage tanks in China, most of which have been used for more than 10 years. Studies have shown that oil tanks buried underground have been eroded by underground moisture all year round, and steel oil tanks that have been used for 10 to 15 years are p...

AI Technical Summary

Problems solved by technology

This kind of lining transformation technology is sandblasting and derusting in a confined space. During the construction process, there are many disadvantages such as dust, environmental pollution, poor working conditions of construction personnel that affect health, and sparks caused by careless operation may cause oil and gas explosions in the oil tank.

During the construction, the rust removal level and pull-off force test construction requirements are relatively high, and the double-layer FRP lining construction is carried out only after passing the test, otherwise it needs to be re-constructed, which will affect the construction period

Images