Abstract: Hydraulic damper is a kind of hydraulic equipment, a response to speed sensitive vibration damping device, which is mainly used to prevent the pipe or equipment due to the earthquake, water hammer, steam hammer, wind load, the safety valve’s steam discharge and other do the damage caused by impact load.
Hydraulic damper is developed in the 70’s of the last century is a kind of rate responsive damping device, it with the help of a special structure of the valve control hydraulic cylinder piston movement with overhead system piping or equipment periodic load and impact load. It is mainly used to prevent the pipe or equipment due to the earthquake; water hammer, steam hammer, wind load, the safety valve’s steam discharge and other do the damage caused by impact load.
Hydraulic damper working process can use the ” hardness and softness ” to describe, in a pipe or equipment during normal thermal expansion can then move slowly, it’s almost no damping force, at this time the expression is “softness”; When load transient hydraulic damper valve is activated, at this time the produce reverse resistance to vibration and power of the same size, curb the large vibration of the pipeline or equipment of the reduced amplitude, so to protect the pipeline or equipment function, at this time the expression is ” hardness “.
Hydraulic damper is fully enclosed structure, Main parts are made of stainless steel or carbon steel chrome plated, has the advantages of novel appearance and beautiful atmosphere, antiseptic performance is strong, high operating reliability, long service life, convenient installation and maintenance etc advantages, can be widely used in nuclear power plants, power plants, chemical pipelines, boiler and other critical equipment’s shock resistant, can effectively prevent because of the earthquake, water hammer, the relief valve exhaust pipe or equipment damage, improve power plant, chemical plant operation safety.