High-pressure cylinders and bottle valves (1) High-pressure cylinder materials High-pressure cylinder materials include high-strength steel, ultra-high-strength steel, carbon fiber, and Kevlar fibers.
(2) Structure of carbon fiber cylinders Carbon fiber composite cylinders are made of high-strength fibers such as aluminum alloy liners, external carbon fibers, glass fibers, and epoxy layers.
CFR178.463 aluminum alloy liner according to US Department of Transportation, AL manufacture manufacturing standards, 100% check items: thickness, straightness, concentricity, finish and hardness. The main winding layer is filament carbon fiber, and the outer layer is made of glass fiber and epoxy resin layers to increase impact resistance and wear resistance.
(3) Injury level: shallow depth to the resin layer;
Grade 2: Scratch to glass fiber, depth <0.25mm (white) repair resin.
Grade 3 (rejected): 1,> 0.25mm (dark grey);
2, strong acid and alkali corrosion sites;
3, scratches the horizontal projection length of bottle 3 / 4 weeks.
(4) The cylinder valve opens or closes the valve of the high pressure cylinder by turning the handwheel.
EN-137 and GA-124 standards require that cylinder valve handwheels have a structure that prevents mis-closing. Cylinder valve outlet female G5/8 thread.
At present, various cylinder valves, according to different shapes, can be divided into three types: vertical, horizontal, and horizontal. The bottle valve is equipped with a safety diaphragm. When the pressure in the cylinder rises to 40-42 MPa, the pressure is automatically relieved, which can prevent the cylinder from burst due to the high pressure inside the bottle and avoid the casualties.
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