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Hangzhou Joule Intelligent Technology Co., Ltd
Analysis of the Specific Testing Process of High Temperature and High Pressure Explosion Limit Tester
Date: 2025-12-13Read: 0
The high temperature and high pressure explosion limit tester is a specialized detection equipment that simulates special working conditions (high temperature and high pressure environment) and accurately determines the explosive concentration range of combustible gases, liquid vapors, or dust mixed systems with air (or oxygen). Its core function is to determine the lower explosive limit (LEL), upper explosive limit (UEL), and most explosive concentration of the mixed system, providing key data support for process design, safety protection, and risk assessment in industries such as petrochemicals, aerospace, and energy extraction.
High temperature and high pressure explosion limit testerStandard testing process:
1. Sample preparation: Pre treat combustible gas/liquid vapor/dust samples. Liquid samples need to be converted into vapor through a vaporization device, while dust samples need to form uniform aerosols through a dispersion device to ensure precise and controllable sample concentration.
2. Working condition setting: Set the target temperature, pressure, and mixing ratio of oxidant (air/oxygen) and combustible medium through the control system. After stirring the mixed system evenly, let it stand for 30 minutes to ensure stable temperature and pressure.
3. Ignition test: Start the ignition device, ignite the mixed system, and continuously monitor the pressure changes and flame signals within 2 minutes.
4. Data recording: If the system explodes, record the current medium concentration; If there is no explosion, adjust the concentration and repeat the test until the lower explosive limit (low concentration of 2 explosions in 3 consecutive tests) and upper explosive limit (highest concentration of 2 explosions in 3 consecutive tests) are determined.
5. Curve fitting: By using multiple sets of concentration test data, fit the explosion limit curve under different temperatures and pressures, and generate a test report.
Key points of safety design:
1. Explosion proof protection: The reaction chamber is equipped with a bursting disc (bursting pressure is 1.1 times the design pressure) and a safety interlock device, which can quickly release pressure in the event of an explosion. At the same time, the entire equipment is placed inside an explosion-proof cover to prevent fragments from splashing and causing safety accidents.
2. Over temperature and over pressure protection: When the temperature or pressure exceeds the set threshold, the system automatically cuts off the heating/pressurization device, starts the cooling and pressure relief program, and ensures the safety of equipment and operators.
3. Gas leakage protection: The interface between the reaction chamber and the pipeline adopts a metal sealed structure, equipped with a leakage sensor. If a combustible gas leakage is detected, the ventilation device and nitrogen purging system will be automatically activated to eliminate the risk of explosion.
4. Electrical safety: The equipment complies with electrical safety standards, adopts a double insulation design, and is equipped with leakage protection and overload protection functions to avoid danger caused by electrical faults.
The core application areas of high temperature and high pressure explosion limit tester are:
1. Petrochemical industry: used for explosion limit testing of crude oil, natural gas, chemical raw materials and intermediates, providing safety parameters for reactor design, pipeline transportation, tank storage and other processes in refineries and chemical plants, and avoiding explosion accidents caused by excessive medium concentration.
2. Energy mining industry: applied to the explosion risk assessment of combustible gases such as coal mine gas, shale gas, and deep-sea oil and gas, guiding ventilation design and explosion-proof equipment selection during the mining process, and ensuring the safety of underground and offshore mining operations.
3. Aerospace industry: Used for explosion limit testing of high-energy fuels such as aviation fuel and rocket propellants, ensuring the safety of fuel storage, transportation, and combustion processes, and providing data support for aircraft design.
4. In the field of chemical research and development: In the research and development process of new combustible materials and fuel additives, by testing their explosion limits, evaluating product safety, optimizing formula design, and promoting product market application.
5. Safety supervision and testing institutions: As the core equipment for safety production supervision and hazardous chemical testing, it is used to conduct safety testing on combustible media in the production process of enterprises, identify safety hazards, and regulate enterprise safety production behavior.