Sealing device and method for eliminating oil gas space

Abstract

The invention relates to the technical field of oil and gas storage sealing, in particular to a sealing device and method for eliminating an oil and gas space, and the sealing device for eliminating the oil and gas space comprises a tank wall of an oil and gas storage tank, a floating disc, and a primary sealing device and a secondary sealing device which are used for sealing an annular gap between the tank wall of the oil and gas storage tank and the floating disc, a limiting plate is arranged on the side wall of the top end of the floating disc; the sealing device further comprises a space sealing device, and the space sealing device is used for eliminating an oil gas space between the primary sealing device and the secondary sealing device. The sealing device provided by the invention has the following beneficial effects that oil gas leaked by the primary sealing device cannot run into the atmosphere, and rainwater, sand wind and the like can be prevented from entering the space of the primary sealing device and the space of the secondary sealing device; the oil-gas space between the primary sealing device and the secondary sealing device is eliminated, the phenomenon that oil gas stored in the space of the primary sealing device and the space of the secondary sealing device exceeds the standard is avoided, and potential safety hazards of equipment cannot be caused in the severe weather state.

Description

technical field [0001] The invention relates to the technical field of oil and gas storage sealing, in particular to a sealing device and method for eliminating oil and gas spaces. Background technique [0002] VOCs emissions from large-scale external floating roof crude oil storage tanks generally exceed the standard, and currently do not comply with ["Volatile Organic Compound Fugitive Emission Control Standard" (GB 37822) Article 8.2 "The concentration of oil and gas leakage points on the storage tank should not exceed 5000μmol / mol (key point region is 2000 μmol / mol)". ] and [Sinopec 2011 [754] 4.1.4 "Should minimize the oil and gas space in primary and secondary sealing spaces"]. According to the standard requirements, we urgently need to develop a set of oil-gas-free sealing device. It not only ensures that the oil and gas leaked from the primary sealing device will not be lost into the atmosphere, but also prevents rainwater and wind and sand from entering the space ...

AI Technical Summary

Problems solved by technology

[0002] VOCs emissions from large-scale external floating roof crude oil storage tanks generally exceed the standard, and currently do not comply with ["Volatile Organic Compound Fugitive Emission Control Standard" (GB 37822) Article 8.2 "The concentration of oil and gas leakage points on the storage tank should not exceed 5000μmol / mol (key point region of 2000 μmol / mol)"

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