Dual channel explosion suppression test device

Applicable standard:

GB/T16426 Determination method for maximum explosion pressure and maximum pressure rise rate of dust clouds

GB/T16425 Determination method for lower limit concentration of dust cloud explosion

Application fields:

1. Measurement of explosion parameters for multicomponent mixtures of gases, dust, liquid mist, gas dust mixtures, and gas liquid mixtures.

Initial pressure:0～200 kPaInitial temperature: ambient temperature

2. Identification of dust explosiveness.

3. Measurement of maximum explosion pressure, maximum pressure rise rate, and explosion index of dust clouds.

4. Determination of upper and lower limits of dust cloud explosion concentration.

5. The explosion index of combustible gases in the air (including the maximum explosion pressure of gases and the maximum rate of pressure rise of gases).

6. Determination of explosion limit of combustible gases in the air.

7. Determination of explosion limit, maximum explosion pressure, maximum pressure rise rate, and explosion index of flammable liquid mist.

8. Evaluation of explosion suppression performance of explosion suppression materials and verification of explosion suppression methods.

9. Gas/dust/The maximum oxygen concentration of liquid mist, combustible gas or vapor.

Technical Indicators:

1. Experimental system

1.1 Explosive Container: Capacity20LMaximum work pressure:4MPa Double layer stainless steel structure（S30408）

1.2 Dust system: The dust channel is set at the geometric center of the lower part of the explosion container

1.2.1 Sample Chamber: Capacity0.6L(Charging pressure:0～2.5MPa）Maximum work pressure:4MPa

1.2.2 Sample chamber pressure measurement range:0 ～2.5MPa(Gauge pressure) Resolution:0.001MPa precision0.25%FS

1.2.3 High speed gas/dust/Liquid mist injection valve: diameter20mmWork pressure:0～4MPa

1.2.4 Delayed ignition time:60ms±5ms(Standard)

50～1000ms(Customized)

1.2.5 Diffusion System: Reflective Wing Diffuser

1.3 Explosion suppression system: The explosion suppression inerting channel is set at the geometric center of the horizontal direction on the left side of the explosion container (adjustable)

1.3.1 Explosion suppression compartment: volume0.3L(Charging pressure:0～2.5MPa）Maximum work pressure:4MPa

1.3.2 Sample chamber pressure measurement range:0 ～2.5MPa(Gauge pressure) Resolution:0.001MPa precision0.25%FS

1.3.3 High speed injection valve: diameter20mmWork pressure:0～4MPa

1.3.4 Start time:-1000ms～1000ms Control sensitivity: ±10ms

1.4 Precision Gas Distribution System: Adopting the partial pressure method for precise proportional gas distribution, equipped with independent precision gas distribution pressure sensors and valves, with precise gas distribution accuracy

±0.1%.

1.4.1 Measurement range of valve pressure:0 ～200.0kPa(Absolute pressure) resolution:0.1 kPa precision0.1%FS

1.4.2 Number of Gas Distribution Channels:4Road（3Road samples+1Road air)

1.4.3 Gas Samples1, sample2, sample3The sum of injection quantities ≤99.9%

1.5 Vacuum systemSystem: Install anti explosion shock filters to prevent combustion and explosion products from blocking pipelines and contaminating the gas distribution system.

1.5.1 Vacuum range: 0-100kPa, using rotary vane vacuum pump, ultimate vacuum ≤ 100Pa,

1.5.2 System sealing: 5-minute pressure drop ≤ 300Pa

1.6 Optical system: equipped withPlace one piece with a diameter of 80mmQuartz glass window, pressure resistant to 4MPa

1.7 Sampling Interface: Configure the sampling interface for collecting explosion and combustion products.

1.8 Cooling method: Circulating water cooling.

2. Synchronous control and data acquisition and processing system (computer monitoring)

Adopting computer remote wireless monitoring, data wireless transmission and storage, human-machine separation, to ensure the personal safety of test personnel.

2.1 Automatic control:

settingcontrol parameters，The experimental device automatically evacuates and introduces dust and flammable liquid samples into 20L according to the set parametersExplosive containerAutomatic mixing, ignition, early or delayed activation of explosion suppression system, automatic collection of explosion parameters and storage in data files. Draw the time curve of bao explosion parameters,The data can be transferred to EXCEL for further analysis and processing.

2.2Manual control:

By simulating the keyboard, independent operations such as vacuuming, gas distribution, stirring, ignition, data acquisition and storage, container cleaning, etc. can be performed, and data files can be read into the computer for analysis and processing.

2.3 Explosion detection system:

By using pressure and temperature detection, it automatically determines whether an explosion has occurred by judging the pressure and temperature changes inside the explosion ball.

2.4 Explosion parameter synchronous acquisition and processing system:

matchSet 4 channelsAccording to the collection system, setcontrol parameters，The experimental device automatically evacuates according to the set parameters and automatically adds 20L of dust, combustible gas, and combustible liquid samplesExplosive containerAutomatic ignition, automatic collection of explosion parameters and storage in data files. Draw the time curve of bao explosion parameters,The data can be transferred to EXCEL for further analysis and processing.

2.4.1 Explosion pressure detection range: -0.1~4MPa (absolute pressure) resolution: 0.001MPa precision0.25%FS

Response time:<1ms Maximum pressure:6 MPaMAX

Configuration situation: Configuration1Support high-speed pressure sensor.

2.4.2 Flame temperature detection range:0～1200℃ Resolution:1℃ precision0.25%FS

Response time:<1ms Maximum pressure:6MPaMAX

Configuration situation: Configuration1Support high-speed flame temperature sensor.

2.4.3 Sampling rate:5K SPS(Sampling interval:0.2ms）

2.4.4 Maximum Sampling Time:6S

2.5 External Device Drivers:

Configure the external device synchronization trigger function module to synchronize or delay outputTTLStart signal, synchronously activate external high-speed cameras and other testing equipment.

3. Ignition system: equipped with high-frequency electric spark ignition unit and pyrotechnic ignition device ignition unit.

3.1High frequency spark ignition: ignition energy:1～300J Pulse voltage:15KV Electrode spacing:3～6 mm

3.2 Fireworks ignition device ignition:Ignition energy:10J～10KJ（10KJneed to use40%Zirconium powder30%硝酸bei和30%Barium peroxide is configured proportionally and provided by the user.

4. Security protection system:

4.1 Adopt computer wireless remote monitoring, wireless data transmission, human-machine separation to ensure the personal safety of test personnel.

4.2 The automatic control system has a self diagnostic function. If a sealing fault occurs, an alarm will prompt and the test will automatically stop.

4.3 Equipped with automatic pressure relief device,The bursting disc of the pressure relief device automatically ruptures when the container is overpressure,Realize safe pressure relief,Ensure the safety of the experiment.

4.4 Configure an emergency stop button, which can be quickly pressed in case of an emergency to protect the safety of laboratory personnel and equipment.

4.5 Configure an oil bath over temperature mechanical switch to prevent the oil bath from overheating.

5. Electricity Source:220 V±10％AC 50Hz±2Hz Power:4500W

6. Workstation: Laptop（CPU-i5 memory8G hard disk512G）

7. Environmental monitoring:

Atmospheric pressure measurement range: 80～110.0kPa Resolution:0.1 kPa

Environmental temperature measurement range: -40～80℃ Resolution:0.1℃

Range of environmental humidity measurement: 0～100%RH Resolution:0.1%RH

8. Work environment:

Ambient temperature10～40℃

ambient humidity:5%～85%RH

9. Equipment size:135cm*75cm*140cm

10. Equipment weight:300KG

11. Installation requirements:(User provided)

40L compressed air steel cylinder (containing ≥4MpaCompressed air)1a