Method for optimizing site selection of gas detecting alarm instrument of oil refining device by considering conditional risk value

A technology for oil refining equipment and gas detection, applied in design optimization/simulation, instruments, special data processing applications, etc., can solve problems such as no alarm, no real-time consequence representation model of the scene, and false alarms

Active Publication Date: 2016-10-26
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0005] Second, in the actual production process, the gas leakage detection and alarm instrument is not ideal, and there are false alarms and no alarms
[0006] Third, the scene consequences are represented by the detection time, and the real-time consequence representation model of the scene has not been esta

Method used

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  • Method for optimizing site selection of gas detecting alarm instrument of oil refining device by considering conditional risk value
  • Method for optimizing site selection of gas detecting alarm instrument of oil refining device by considering conditional risk value
  • Method for optimizing site selection of gas detecting alarm instrument of oil refining device by considering conditional risk value

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Embodiment Construction

[0067] The present invention will be further described below in combination with embodiments.

[0068] Specific steps are as follows:

[0069] (1) Taking the leakage source working conditions and wind field conditions as random factors, quantitatively construct a set of hazardous gas leakage scenarios for refinery units. Each scenario in the set is denoted by i, i∈[1,I]. Use historical meteorological data to obtain the joint distribution probability of wind speed and wind direction in the wind field, and obtain the probability of equipment leakage, so as to obtain the approximate probability of leakage scenarios;

[0070] (2) This patent uses the method of CFD three-dimensional numerical simulation to obtain the real-time concentration data of gas diffusion that conforms to the layout of the on-site device. However, modeling all leakage scenarios in detail would be computationally expensive. Taking the research device as an example, using a high-performance computer (CPU: Co...

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Abstract

The invention discloses a method for optimizing site selection of a gas detecting alarm instrument of an oil refining device by considering a conditional risk value. Quantitative presentation of a real-time risk of the oil refining device is realized based on a risk triple theory and a leakage site set, so that it is used as a quantitative index of an arrangement decision risk; then, minimization of the arrangement decision risk is used as an optimization object; an optimal conditional value risk and the number of detecting alarm instruments are used as constraint conditions; whether arranged alternative points of the alarm instruments are selected or not is used as a binary decision variable; a target function and a constraint function of an optimization model are defined; and a P-media model having the minimum decision risk and by considering the reliability, the voting logic and the conditional risk value is established. The method disclosed by the invention has the benefits that: when scheme optimization is carried out, the unavailable property and the failure condition of the detecting alarm instrument are sufficiently considered; the successful detection probability of the detecting alarm instrument is in a considered range; and thus, the optimization result is more accurate.

Description

technical field [0001] The invention relates to a site selection optimization method for a gas detection and alarm instrument of an oil refinery considering a conditional risk value. Background technique [0002] At present, in the field of petroleum refining and chemical industry, relevant technical standards (such as SH3063-1999 "Code for Design of Detection and Alarm of Combustible Gas and Toxic Gas in Petrochemical Enterprises", GB50493-2009 "Design Specification for Detection and Alarm of Combustible Gas and Toxic Gas in Petrochemical Industry", SY6503-2000 "Code for Combustible Gas Detection and Alarm Use" and SY-6503-2008 "Safety Technical Specifications for Combustible Gas Detection and Alarm Systems in Petroleum and Natural Gas Engineering", etc.) as the main basis for the layout of traditional gas detection and alarm devices, only combustible gas and toxic gas detectors Provisions have been made on the principle of setting the detector, the distance between the det...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 章博王志刚贾艳赵日彬杨敬
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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