Gas explosion limit test system

Applicable standards:

GB/T 21844Standard test method for flammability concentration limits of compounds (vapors and gases)

GB/T 803-2008Determination method for explosion index of combustible gases in the air

GB/T 14288-1993Test method for minimum electrostatic ignition energy of flammable gases and flammable liquid vapors

GB/T 12474-2008Determination method for explosive limit of combustible gases in the air

Scope of application:

1Flammable gas explosion limit test and maximum explosion pressure and maximum pressure rise rate test.

2Testing of the explosion limit, maximum explosion pressure, and maximum pressure rise rate of flammable liquid saturated vapor.

3Flammability concentration limits, maximum explosion pressure, and maximum pressure rise rate tests for flammable liquid gas-liquid two-phase mixtures.

4Conduct tests on the explosion characteristics of combustible gases, volatile liquid saturated vapors, and gas-liquid two-phase under negative pressure and atmospheric pressure conditions.

*5、Conduct minimum ignition energy testing for combustible gases. (Optional)HY180JPrecision Electric Spark Energy Generator

Technical Indicators:

1Integrated control system:

1.1Microcomputer automatic control.

*1.2Computer remote wireless monitoring, data wireless transmission.

2Structure:

2.1Adopting anti explosion impact stainless steel inner liner, with a large constant temperature space.

2.2Explosive container:5LStainless steel spherical explosive container, resistant to impact pressure4MPa

5LGlass ball type explosive container, resistant to impact pressure1.2MPa

2.3Observation window: The front is equipped with a double-layer transparent ultra large explosion-proof observation window, which can observe the explosion situation inside the transparent explosive ball.

3Constant temperature system: enclosed circulation space, internal heating circulation components,PIDTemperature measurement and control.

3.1Temperature measurement range:0～200℃ Resolution: 0.1℃ accuracy class0.1%FS

3.2Constant temperature range: room temperature~ 180℃； Constant temperature accuracy: ±1℃ Resolution: 0.1℃ accuracy class0.1%FS

3.3Temperature measuring element:PT100(GermanyJUMOCompany temperature sensor)

3.4Heating method: infrared radiation heating, hot air circulation.

4Test conditions:

4.1Initial pressure:50 kPa～1MPa

4.2Test temperature: Room temperature~ 180℃

4.3真空度：0～100 kPa

4.4Circulating mixing time:0-999second

4.5Gas sample injection volume:0-100%(Gas (Sample)1+sample2+sample3）The sum of injection quantities ≤100%）

4.6Liquid sample:0-100ml

5Gas distribution system and injection system:

*5.1 PrecisionGas distribution system:Adopting the pressure division method for automatic gas distribution technology to achieve multi-channel gas automatic distribution, equipped with independent precision gas distribution pressure sensors and valves, with a gas distribution accuracy of ± 0.1%

Invention specializationliMeasurement device and operating method for limit oxygen concentration parameters of combustible gases

Special Li Number: ZL 2017 1 0443836.2

specialliRights holder: Jilin Hongyuan Scientific Instrument Co., Ltd./Tianjin Fire Research Institute of the Ministry of Emergency Management (formerly Tianjin Fire Research Institute of the Ministry of Public Security)

5.1.1Measurement range of valve pressure:0～100 kPa(Absolute pressure) Resolution:0.1 Kpa

Accuracy level:0.1%FS(German imported precision pressure sensor)

5.1.2Gas distribution method: vacuum proportional gas distribution, gas distribution accuracy:0.1%

5.1.3Number of gas distribution channels:4Road（3Road samples,1Road air) gas sample1、2、3The sum of injection quantities ≤100%

5.2Liquid sample: manually added, injection volume0-100ml

*5.3Liquid saturated vapor distribution system: built-in1LSaturation vapor generation device and dedicated injection component, capable of saturating liquid mixturesSteam explosion limit and explosion parameter testing experiment, to avoid the influence of steam liquefaction reflux after gasification on injection accuracy.

6Vacuum system:

6.1Vacuum device:2LRotary vane vacuum pump, vacuum degree<0.067Pa

6.2真空度： ＜300Pa

6.3System sealing:5Minute pressure drop ≤0.3kPa

7Explosion detection system:Adopting dual detection technology of pressure detection and temperature detection, it automatically determines whether an explosion has occurred by judging the pressure and temperature changes inside the explosion ball.

Invention of specialized technology "A mixed gas explosive on-site testing device and measurement method"

Special Li Number: ZL 2017 1 0831664.6

specialliRights holder: Jilin Hongyuan Scientific Instrument Co., Ltd./Tianjin Fire Research Institute of the Ministry of Emergency Management (formerly Tianjin Fire Research Institute of the Ministry of Public Security)

*7.1The instrument adopts pressure detection and temperature detection, and automatically determines whether an explosion has occurred by judging the pressure and temperature changes inside the explosion ball.

7.2Explosion parameter synchronous acquisition and data processing system: configuration6The channel high-speed synchronous data acquisition system adopts dedicated explosion detection sensors and high-speed flame temperature sensors to automatically collect explosion pressure and explosion flame temperature data, and automatically draw the explosion pressure/Flame temperature time curve, data can be saved toEXCELL，Further analysis and processing will be conducted.

7.2.1Explosion pressure detection range: 0～4MPa Resolution:0.001MPa precision0.25%FS

Configuration: Standard configuration includes 1 high-speed pressure sensor

7.2.2Flame temperature detection range:0～1200℃ Resolution:1℃ precision0.5%FS

Configuration: Comes standard with one high-speed flame temperature sensor.

7.2.3Synchronous acquisition system: Synchronous acquisition channel:2～6通道

Data sampling interval:0.2ms ,Maximum sampling time:5S

7.2.4Has synchronous or delayed external triggering function, can synchronize or delay（0～3000ms）Output5V TTLtrigger signal,Activate the external device of the high-speed camera.

8Ignition system:

8.1Electric spark ignition: arc voltage15KVArc current:30mA, ignition time:0.03～1Seconds, electrode spacing:2～8mm

*8.2Available for purchaseHY180JPrecision spark ignition energy generation device(0.01 mj～200mj）Conduct a minimum ignition energy test for combustible gases.

9Mixing system: using anti explosion impact and high-temperature resistant magnetic mixing components.

Circulating mixing time:0～999second

10Observation method: It can be observed through the front double-layer transparent explosion-proof door5LThe explosion situation inside the glass explosion container.

11Security protection system:

11.1Install a large-diameter pressure relief device connected to the top of the explosive ball.

11.2Configure a front double-layer transparent explosion-proof door with strong locking (with locking detection function, the explosion-proof door cannot start the test without being locked).

11.3Computer remote wireless monitoring, data wireless transmission, human-machine separation, ensuring the personal safety of experimental personnel.

12Workstation: Laptop（CPU-i5 memory8G hard disk512G）

13, Show Display: Color capacitive touch screen

14Environmental monitoring: used to monitor the safe operating conditions of the internal electronic components of the equipment for environmental temperature, humidity, and air pressure. Not used as a criterion for experimental conditions.

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

15Electricity Source:220±10％V AC 50Hz±2Hz Power: ＜2500W

16、Work environment:

Ambient temperature10～40℃

ambient humidity:5%～85%RH

17Equipment size:85cm*60cm*100cm