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Pre-warning and control method for occurrence of oil gas thermal explosion in limited space

A technology of confined space and control method, applied in the field of early warning and control of thermal explosion of oil and gas, can solve problems such as safety production, hidden dangers of life and property safety, complex mechanism, and many influencing factors, and achieve scientific analysis and control criteria. Reliable and controlled effect of oil and gas thermal explosion

Inactive Publication Date: 2014-04-30
LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The causes of such thermal explosion accidents are usually highly concealed, which brings serious safety hazards to the safe production, personnel life and property of oil and gas sites.
Due to the great hazards of oil and gas thermal explosion and the special environmental conditions, there are many influencing factors and complex mechanisms in the process of its occurrence, and there is still a lack of effective early warning and control methods for oil and gas thermal explosion.

Method used

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  • Pre-warning and control method for occurrence of oil gas thermal explosion in limited space
  • Pre-warning and control method for occurrence of oil gas thermal explosion in limited space
  • Pre-warning and control method for occurrence of oil gas thermal explosion in limited space

Examples

Experimental program
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Effect test

Embodiment 1

[0028] An early warning method for the occurrence of thermal explosion of oil and gas in a confined space includes the following steps:

[0029] 1) Install an oxygen concentration monitoring device in a confined space where oil is stored, and detect the oxygen concentration Y,% in the space every 1 minute from time 0;

[0030] 2) 20 Y values ​​are collected, and corresponding to 20 time T, so there are 20 sets of data, namely (Y (1) , T (1) ), (Y (2) , T (2) )...(Y (n) , T (n) ) Is: (19.78, 1), (19.75, 2), (19.66, 3), (19.62, 4), (19.58, 5), (19.52, 6), (19.48, 7), (19.46, 8) , (18.35, 9), (18.80, 10), (18.30, 11), (17.80, 12), (17.30, 13), (16.80, 14), (16.23, 15), (15.38, 16) (14.53 , 17), (13.70, 18), (12.90, 19), (12.12, 20). For these 20 sets of data "(Y (1) , T (1) ), (Y (2) , T (2) )...(Y (20) , T (20) )” to process, that is, from (Y (2) , T (2) ) Start the forward difference to get 19 difference values -0.03, -0.09, -0.04, -0.04, -0.06, -0.04, -0.02, -0.11, -0.55, -0.5, -...

Embodiment 2

[0038] This embodiment is a method for controlling the occurrence of thermal explosion of oil and gas in a confined space based on the early warning method described in Embodiment 1.

[0039] When step 5) issues an early warning signal, perform one or more of the following A to C:

[0040] A) Turn on the power switch of the fan, and the fan will purge the inert gas from the inert gas source to the oil and gas environment;

[0041] B) Turn on the power switch of the refrigeration compressor, and the refrigeration compressor will blow the cold air into the oil and gas environment;

[0042] C) Open the solenoid valve on the atomization nozzle pipeline, and the water in the water tank will spray fine water mist into the oil and gas environment through the solenoid valve and the atomization nozzle under the action of the high-pressure air pressure in the pressure vessel.

[0043] Furthermore, this embodiment adopts a set of oil-gas thermal explosion control system. Specifically, the system ...

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Abstract

The invention discloses a pre-warning and control method for occurrence of an oil gas thermal explosion in a limited space. The fast consumption rate of oxygen when the oil gas thermal explosion occurs is taken as a pre-warning judgment criterion for the occurrence of the oil gas thermal explosion. A real-time oil gas environmental safety state can be obtained by monitoring oxygen concentration consumption rate data in an oil gas environment and performing analysis treatment on the data through a system. When the judgment shows that the risk of the oil gas thermal explosion is increased, an alarm is sent to a control system and / or field staff. After the oil gas thermal explosion control system is started, cold air cooling by a compressor, inert gas dilution purging, water mist humidification and other measures are adopted, the conditions for enabling the oil gas thermal explosion to occur are damaged, and the oil gas thermal explosion is further effectively controlled.

Description

Technical field [0001] The invention relates to the field of oil and gas storage, especially the early warning and control of oil and gas thermal explosions. Background technique [0002] Oil and gas fire and explosion accidents have always been one of the main causes of heavy casualties and economic losses in oil plants. Investigation of the causes of a large number of oil and gas fire and explosion accidents found that the combustion and explosion of oil and gas in confined spaces (such as oil caverns, oil tanks, tunnels, underground tunnels, etc.) caused by local heat sources is one of the main reasons for oil and gas fire and explosion safety accidents . This patent oil and gas thermal explosion refers to the deflagration (explosion) caused by the accumulation of local temperature in the oil and gas field due to the local high temperature heat source. The inducement of such thermal explosion accidents is usually very concealed, which brings serious safety hazards to the saf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01N33/28F17C13/12
Inventor 杜扬张培理欧益宏梁建军齐圣
Owner LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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