ECD-20A 20L spherical explosion tester Introduction: The ECD-20A 20L spherical explosion tester is a professional testing instrument used to determine the maximum explosion pressure Pmax, the maximum explosion pressure rise rate (dp/dt) max and the explosion index Kst of a dust cloud explosion under specific test conditions. A certain quality of dust sample is diffused into a 20L spherical explosion container, and the dust cloud is ignited with a chemical or electrostatic ignition head of specified energy. The pressure and time curve in the explosion container are measured to obtain the maximum explosion pressure and maximum value in the test. The pressure rise rate, and then calculate the explosion index. Parameters such as maximum explosion pressure, maximum explosion pressure rise rate and explosion index can be used in explosion pressure relief design and explosion suppression design. Features: 1) It can test the explosion parameters of dust, gas and solid/gas mixed system 2) Built-in international commonly used test standards, which can be tested according to standard parameters or customized 3) There are two methods of chemical ignition and electrostatic ignition, suitable for different test purposes 4) The explosion container has a water circulation interlayer to achieve a constant temperature in the test environment 5) Vacuum and gas distribution automatically, enter the target concentration value, automatically calculate and complete gas distribution according to requirements 6) The dust dispersion device can completely disperse the dust evenly into the explosive container and there is no residue in the powder storage room 7) The device is easy to clean, saving experiment time 8) Real-time display of time and pressure curve, the test process is more intuitive 9) The test results include time-pressure curve and temperature data, providing more explosion information 10) Remote control to ensure the personal safety of experimenters 11) Computer control, strong data analysis ability, accurate curve feature judgment technical parameter: Working environment: 5℃～45℃, <85%RH Explosion container: 20L ball with interlayer Pressure resistance of container: design pressure 3.0MPa@25℃, test pressure 4.0MPa@25℃ Ball material: stainless steel, with resistance to intergranular corrosion Spherical working temperature: The highest temperature is 220℃ Ball volume: 20L Interlayer volume: 1.5L Jacket wall thickness: inner jacket wall thickness 4mm, outer jacket wall thickness 3mm Explosion pressure detection channels: 2 Explosion temperature sensor: detection range 0～1000℃, resolution 0.01℃ Dust diffusion container: 0.6L in capacity, controlled by software to achieve the air pressure in the diffusion container to 2.0MPa Powder spraying pressure: 2.0MPa Nozzle type: rebound nozzle, porous ring nozzle Powder spraying delay time: 30ms～50ms Ignition method: chemical ignition: 2kJ/10kJ Electrostatic ignition: 10J Ignition delay time: 60ms Explosion pressure data acquisition: acquisition rate 100 ks/s, recording time 1s Ignition control: remote wireless ignition start Ignition head status detection: electrochemical ignition head contact status and fusing status judgment Automatic air distribution: with 2 air inlets and 1 air inlet; air distribution by partial pressure method, independent air distribution pressure sensor and solenoid valve, air distribution accuracy ±0.1% Vacuum system: Rotary vane vacuum pump, equipped with double-layer anti-impact filter to prevent residual material from clogging and polluting the pipeline, and easy to replace Vacuum degree: 0.4±0.02bar, software control to vacuum the sphere Snap ring diameter: 95mm Diameter of cleaning hole: 150mm Observation window: armored glass, diameter 40mm High-speed camera: optional
Introduction: The ECD-20A 20L spherical explosion tester is a professional testing instrument used to determine the maximum explosion pressure Pmax, the maximum explosion pressure rise rate (dp/dt) max and the explosion index Kst of a dust cloud explosion under specific test conditions. A certain quality of dust sample is diffused into a 20L spherical explosion container, and the dust cloud is ignited with a chemical or electrostatic ignition head of specified energy. The pressure and time curve in the explosion container are measured to obtain the maximum explosion pressure and maximum value in the test. The pressure rise rate, and then calculate the explosion index. Parameters such as maximum explosion pressure, maximum explosion pressure rise rate and explosion index can be used in explosion pressure relief design and explosion suppression design.
