Fluid control valve is an important safety component engineering, it is through closing fluid countercurrent to ensure directional flow of fluid, which protects other fluid machinery and pipeline safety. Therefore, in the nuclear power plant hydraulic system has been widely used in a variety of non-return valve, such as swing check valves. Swing check valve has a disc-type plug hinged on the edge, through the back off.
2013年11月1日星期五
On the check valve in the heating system to study the role of water hammer
In large-scale central heating system, water hammer event of an accident , destruction and strong , serious consequences , it must take active preventive measures to minimize and prevent water hammer phenomenon. Heating system piping valve is a very important component in the check valve is installed, structural parameters and closed
Male connector system security and reliability has a great influence . If the check valve used properly , can play the role of water hammer protection ; However, if used improperly, not only can not play a protective effect on the heating
Instrumentation ball valve piping in the heating system caused large fluctuations . So the check valve in the heating system to study the role of water hammer has a very important practical significance and academic significance. Transient fluid
Instrument needle valves the perspective of the requirements for the non-return valve in the power interruption can only turn on or off , but should be based on the liquidity situation in the heating pipes on the speed of the hoist has certain requirements . Improper opening and closing speed will cause the system to a sudden increase in pressure in the pipeline or fall , when the pressure on the appreciation of the tube is large enough can cause rupture . To ensure system security, must be a reasonable choice and close the check valve structure curve , it has played the role of water hammer .
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