Jzq-f type self rescuer negative pressure airtight calibration device

  Product executive standard of jzq-f self rescuer negative pressure air tightness verification device: Q / SD 023-2006 jzq-f self rescuer negative pressure air tightness verification device product features and uses jzq-f self rescuer negative pressure air tightness verification device (hereinafter referred to as verification device) is a device used to check the air tightness of self rescuer, which is composed of host and dryer, It complies with the provisions of 1
4
2
2 negative pressure method in GB / t8160-1987, with accurate and intuitive detection and simple installation and operation
The calibration device is mainly used for self rescuer manufacturers and users to carry out ex factory and daily air tightness inspection of products
Project Technical parameters of jzq-f self rescuer negative pressure air tightness calibration device pressure range (- 0
1 ~ 0) MPa accuracy grade 2
5 power supply voltage 220V / 50Hz Power 40W overall dimension of host 320 & times; 310× 200 overall dimension of Dryer & phi; 300× 320 host weight 7kg dryer weight 3
2 kgjzq-f self rescuer negative pressure air tightness verification device performance characteristics 1
Connect the host pressure connecting pipe with the joint of the upper cover of the vacuum dryer, clean the inner edge of the upper cover of the vacuum dryer and the surface of the container grinding port, and evenly apply a small amount of vacuum grease on the two grinding ports
2
Inject water into the vacuum dryer, and the water surface shall be (2 ~ 3) mm higher than the interface between the upper and lower tanks of the tested self rescuer
Plug in the AC 220V power supply to the chassis and turn clockwise to close the pressure relief valve
3
Put the self rescuer under test into the vacuum dryer filled with water and cover it
Turn on the power switch of the main engine, adjust the pressure relief valve and observe the pressure gauge to stabilize the pressure at - 13
33kpa
4
After the required pressure is adjusted, observe whether there are continuous bubbles at the interfaces of the upper and lower tanks of the tested self rescuer and other parts
Test results: if more than two continuous bubbles float out after 60s, it is unqualified (bubbles caused by the gap of the external structure of the product cannot be regarded as air leakage)
5
Turn off the power supply and open the pressure relief valve
After the indication of the pressure gauge returns to zero, move the upper cover of the vacuum dryer in parallel and take out the tested self rescuer
Zhengzhou Aidi production and supply coal drilling cuttings desorption instrument Deep hole sampling device, pressure measuring instrument, geological exploration desorption instrument, borehole flowmeter, mine drainage and outburst prevention equipment, coal true apparent density measuring instrument, gas content measuring instrument, underground coal seam content rapid measuring instrument, automatic measuring instrument of initial release velocity, diffusion velocity measuring instrument,