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A liquid fuel vapor explosion limit testing system and testing method

A technology of liquid fuel and explosion limit, which is applied in the direction of explosiveness of materials, etc., can solve problems such as difficulty in explosion limit, calculation of explosion limit, etc., and achieve the effect of accurate judgment

Active Publication Date: 2016-08-24
PETRO OIL & LUBRICANT RES INST OF THE GENERAL LOGISITIC DEPT OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the actual process, due to the complexity of the composition of gasoline, diesel and jet fuel, its explosion limit is difficult to calculate with the explosion limit of several individual components
Moreover, oils produced with different raw materials and different processes have different explosion limits at different ambient temperatures or storage times. Therefore, the explosion limits of various oils given in general information are estimates. value, it is difficult to use it to characterize the real oil safety performance

Method used

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  • A liquid fuel vapor explosion limit testing system and testing method
  • A liquid fuel vapor explosion limit testing system and testing method
  • A liquid fuel vapor explosion limit testing system and testing method

Examples

Experimental program
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Effect test

Embodiment 1

[0052] like figure 1 As shown, a liquid fuel vapor explosion limit determination system is characterized in that it includes an explosion chamber 1, a computer, a main control system and a first vacuum device 7 connected thereto, a gas circulation device 8, and a liquid fuel vapor supply device 4 , dry air supply device 5 and ignition device; explosion chamber 1 is a closed hollow tubular structure, the hollow part of explosion chamber 1 is an explosion space, an ignition electrode 6 is installed at the beginning of the explosion space, and an explosion chamber pressure sensing device is installed at the end, The ignition electrode 6 is connected with the ignition device, and the explosion chamber pressure sensing device is connected with the main control system; the liquid fuel supply device 4, the dry air supply device 5 and the first vacuuming device 7 are all connected with the explosion space; the main control system It is connected with a computer; the gas circulation de...

Embodiment 2

[0062] A method for determining the explosion limit of liquid fuel vapor by using the liquid fuel vapor explosion limit determination system described in Example 1, comprising the steps of:

[0063] A. Use the first vacuum device 7 to vacuum the explosion space, then use the liquid fuel vapor supply device 4 to feed the liquid fuel vapor into the explosion space and inject dry air into the explosion space with the dry air supply device 5 until the internal pressure of the explosion space is one Standard atmospheric pressure; open the gas circulation device 8 to mix the liquid fuel vapor and the dry air to obtain a mixed gas;

[0064] B. detonate the mixed gas by ignition device and ignition electrode 6; the explosion chamber pressure sensing device transmits the measured explosion pressure data to the computer, and compares the measured explosion pressure data maximum value with the standard atmospheric pressure, assess whether the gas mixture is explosive;

[0065] C. Change...

Embodiment 3

[0067] A method for determining the explosion limit of liquid fuel vapor by using the liquid fuel vapor explosion limit determination system described in Example 1, comprising the steps of:

[0068] A, use the first vacuum device 7 to evacuate the explosion space to a vacuum degree of 0.8KPa; inject constant temperature water into the interlayer constant temperature structure of the side wall of the explosion chamber 1 with a constant temperature water supply device, the temperature of the constant temperature water at 90°C,

[0069] Prepare the liquid fuel vapor with the liquid fuel vapor supply device 4, the specific steps of preparation are as follows:

[0070] Turn on the second vacuum device 415 to evacuate the steam generation tank 402 and the steam storage tank 403 to a vacuum degree of 0.75-1.5Kpa, then close the second vacuum device 415 and close the air supply control Valve 412, open the constant temperature water supply device 18 to inject circulating constant temp...

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Abstract

The invention discloses a system for measuring the explosion limit of liquid fuel vapor. The system comprises an explosion bin (1), a computer, a main control system, a first vacuum pumping device (7) connected with the main control system, a gas circulating device (8), a liquid fuel vapor supply device (4), a dry air supply device (5) and an ignition device, wherein the liquid fuel vapor supply device (4), the dry air supply device (5) and the first vacuum pumping device (7) are communicated with the explosion bin (1); an ignition electrode (6) and an explosion bin pressure sensing device are mounted in the explosion bin (1); the ignition electrode (6) is connected with the ignition device; the explosion bin pressure sensing device is connected with the main control system; the main control system is connected with the computer; and the computer is communicated with the explosion bin (1). The invention also provides a method for measuring the explosion limit of the liquid fuel vapor. The system for measuring the explosion limit of the liquid fuel vapor has the advantages being safe, reliable and capable of accurately measuring.

Description

technical field [0001] The invention relates to a system and method for measuring explosion limit, in particular to a system and method for determining explosion limit of liquid fuel vapor. Background technique [0002] Gas station operation accidents generally occur in the four links of unloading, oil measuring, refueling, and tank cleaning. These four links expose the oil to the air. If the operation procedures are violated during the operation, the oil vapor will accumulate in the air A certain concentration and contact with a fire source will cause an explosion accident. Among them, 60% to 70% of gas station fire accidents occurred during oil unloading operations. Therefore, in the process of operation, knowing the explosion limit of oil vapor, and adopting corresponding instruments and meters for real-time concentration monitoring is an effective means to avoid fires in gas stations. [0003] The explosion limit is also a necessary basis for evaluating the potentially...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/54
Inventor 安高军鲁长波熊春华王浩喆周友杰王旭东雷正
Owner PETRO OIL & LUBRICANT RES INST OF THE GENERAL LOGISITIC DEPT OF PLA
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