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  • Industrial oxygen generator is an automatic equipment that uses zeolite molecular sieve as the adsorbent and uses the principle of pressure adsorption and decompression desorption to adsorb and release oxygen from the air, thereby separating oxygen. Zeolite molecular sieve is a kind of spherical gra


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  • The inch thread is the size of the thread marked in the inch system. According to the shape, it is divided into two types: cylindrical and conical; according to the tooth angle, it is divided into two types: 55° and 60°. The 1/4, 1/2, and 1/8 marks in the thread refer to the diameter of the thread s


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  • The main function of the shock ringWhen the cylinder is impacted, it absorbs energy and reduces vibration;Keep the distance between the cylinders to protect the cylinder logo and paint color from being worn to a certain extent.


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  • 1. Why can't acetylene cylinders be used up?The gas in the bottle is used up, the pressure inside the bottle is balanced with the atmospheric pressure, and the air is easily mixed into the bottle to form a mixture of acetylene and air. The explosion limit of acetylene is 2.3%-100% (volume fraction).


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  • In fact, many people do not use fire extinguishers correctly. Moreover, heavier fire-fighting equipment may not be available to the elderly and children. This not only delayed the fire, but also caused unnecessary casualties. So missed the best time to fire. Today Xiao Bian brought everyone the gosp


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  • 1. The filling, transportation, storage and use of aluminum inner carbon fiber full-wound composite gas cylinders (hereinafter referred to as gas cylinders) shall comply with the "gas cylinder safety supervision regulations"; for positive pressure fire-fighting air breathing apparatus shall comply w


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  • Ball valveBall valves are evolved from plug valves. It has the same 90° rotation action, except that the plug body is a sphere with a circular through hole or passage through its axis. The ratio of the spherical surface to the passage opening should be such that when the ball is rotated by 90°, all


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  • (1) Low temperature engineering application of helium gasIt is well known that the liquid temperature range of xenon is 2 x 10-3 - 5.20 K, the liquid temperature range of hydrogen is 14.2 - 33.0 K, and the liquid temperature range of helium is 24.5 - 44.40 K.Because helium is chemically inert and ha


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  • carbon dioxideOthers: Carbonic acid, carbonic anhydride, dry ice (solid state)Chemical formula: CO2Molecular weight: 44.0095Melting point: -78.45 °CBoiling point: -78.45 °CWater solubility: 1.45 g/L (25 ° C, 100 Pa)Density: 1.907g/L in gaseous state and 1.816kg/L in liquid stateFlash point: noneAppe


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  • Liquefied Petroleum Gas (LPG) is often confused with LNGIn fact, they have obvious differences. The main components of LPG are propane and butane with a small amount of olefins. LPG is stored in a tank in a liquid state under appropriate pressure and is often used as a cooking fuel, which is the liq


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