Air separation parts FAQ

There are many types and types of low temperature valves. Now taking the low temperature stop valve as an example, the common failures can be divided into three categories: the first category: the failures occurring on the top of the valve. The valve top (valve head) of this kind of valve is connected with the valve stem by movement, so that when the valve is closed, the two sealing surfaces can be "corrected automatically ". After long-term use, sometimes the lock nut is loosened due to the damage of anti-back gasket, and finally the top of the valve falls off when opening the valve. At this time, the valve will lose its function of closing. Sometimes the damage of the lock nut is caused by the improper material and the replacement of cold and fragile metal. Another common fault is that the valve top is not closed strictly, that is, the valve leaks. The common reason is that the sealing surface of the valve top and the valve seat is crushed by hard objects (such as hard objects suc...

How is air liquefied in an air separation plant?

Solenoid valve controls the position of valve core through an electromagnetic coil to achieve the purpose of changing the flow direction of fluid, or to cut off or connect air source. The electromagnetic components of the commonly used four-way solenoid valve consist of fixed iron core, moving iron core, coil and other parts. The part of valve body consists of sliding valve core, valve body, sliding valve sleeve, spring base, etc. The working principle of four-way solenoid valve. When there is electricity flowing through the coil, excitation will be generated, and the iron core will be fixed to absorb the moving iron core. The moving iron core will drive the sliding valve core and compress the spring, which changes the position of the sliding valve core and thus changes the direction of the fluid. When the coil loses power, the sliding valve core is pushed by the spring's elasticity, and the iron core is pushed back to make the fluid flow in the original direction. This kind of sole...

Air separation equipment in the process of operation overload, the main cooling liquid level long not high should be how to solve?

Argon arc welding will produce harmful gas and high-frequency electricity during the welding process, so there are several protection and safety measures as follows: 1) tungsten pole at present, the manual argon arc welding uses tungsten tungsten with a small amount of radioactive as the electrode. When welding in a closed place or with large current, ventilation and special protective mask should be strengthened. 2) when grinding the end of tungsten pole with grinding wheel due to the need of work, there must be good ventilation because there are radioactive particles in the dust. And the staff should wear masks. It is better to use mechanized closed grinding tungsten pole device. 3) the ultraviolet intensity of argon arc welding is 5 ~ stronger than that of manual arc welding ~ 19 times. In order to prevent intense ultraviolet radiation from harming eyes and skin, wear a mask, white work clothes and gloves when welding, and do not roll up the cuff. 4) in order to reduce the influe...

How can I tell if the moisture and carbon dioxide levels in the air after exiting the molecular sieve purifier are excessive and what causes them?

How should the molecular sieve adsorption purification process be operated when the air separation equipment resumes power supply after a power outage?

Air separation equipment air separation equipment has gas-liquid mixing how to solve?

What is the main function and working principle of the pre cooling system of the air separation equipment?

Why does the moisture content of the air decrease after passing through the cooling tower?

The working pressure of the high-pressure oxygen compressor used for filling bottles is high, and it is easy to cause cylinder burning accidents due to improper operation and management. In order to prevent this kind of accidents from happening, the following matters should be paid attention to when using and maintaining: 1) for the parts of the oxygen compressor, the maintenance tools and the hands of the maintenance personnel must be strictly skim and cleaned, finally, clean the carbon tetrachluene thoroughly. When pulling out the piston for overhaul, special attention should be paid to clear the oil stain at the bottom of the piston rod in case of stain the seal. When the sealer and scraper are worn out, they should be replaced in time to prevent them from being oiled; 2) the distilled water used for lubrication must not be interrupted. Distilled water tank should be more than 2m higher than cylinder head, and water level gauge and dripping device should be easy to monitor. The a...

How many types of expansion machines are there in the expansion refrigeration system of air separation equipment?