Compression Method CNG refueling station mechanical failure

Compression Method CNG refueling station mechanical failure

1. Method for valve failures

Exist to prevent the valve end area of debris, maintenance personnel should be possible to enhance the working medium filtering accuracy, to ensure lubrication lubricating oil while reducing the dosage, and the valve material should be combined with compressed natural gas refueling station in media flexibility to choose; contact area targeted expand limiter and valve lift, making concentrated stress collisions effective diffusion, anti-valve problems during impact fracture; should be chosen taking into account the stress valve spring wear spring surface, try to avoid a helical compression spring, when the damage occurs when the inner and outer surfaces of the timely repair or replacement, in order to avoid a greater failure, high temperatures and other phenomena will make the surface carburizing quality is damaged, regular maintenance ; selected spring specifications should be uniform standards, not too big or too small, whether machining or heat treatment process should follow the late processing technology, scientific completion [3].

2. Method for the piston ring failures

For piston ring problems, maintenance personnel can be combined with work experience and professional knowledge of scientific and meticulous selection in the choice of the piston ring segment, to prevent a problem from the source, compressed natural gas refueling station at the 3.0mpa intake pressure is generally less, and changes amplitude is small, so reciprocating piston compressor supercharging effect can play a very good, in order to avoid piston ring failure, maintenance personnel and should be lubricated to ease the wear extent of the problem, its regular cylinder block and the cooling body strict inspection, when should identify problems promptly resolved, replace if necessary; the transformation of the cooling pipes, making it both achieve good cooling effect, but also reduce the moisture of the air cylinder corrosion; if necessary, add a filter, it is impurities in the compressed natural gas under control, to strengthen routine maintenance work on this basis, to identify problems and solve, need to pay attention in this process, in the process necessary to replace the device must be selected manufacturer's original parts, to avoid over-caliber small or new problems caused by differences in elasticity.

3. The processing method for the cylinder overheating

Cooling system not only allows the temperature of the cylinder and the compressed gas is effectively reduced, and the lubricating oil in the cylinder can be extended period with good elasticity, extension carbonization time, the reciprocating piston compressor of overall reliability and safety of operation of the more assured, so when the cooling system was found inadequate cooling water supply, maintenance personnel should be filled; to reduce friction between the device produced a strong and cause overheating and damage, lubricating oil reserves must be sufficient, when found in the cylinder and Cross slide should not be amended in a concentric position in a timely manner, we can see the cylinder overheating problem mainly targeted treatment, comprehensive prevention.