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For household water purifiers, where if water pressure is unstable, it is recommended the installation of water purifiers, pressure reducing valve should be configured in order to resolve the "water hammer" phenomenon caused by explosive bottle, so as to ensure the use of safety.
water purification equipment, effectively solve the problem of water pollution. However, individual equipment will be some accidents, one of the reasons is because of the "water hammer" problem. So what is water hammer, the presence of water hammer exactly what harm it?
In the line pressure, due to some external reason, such as the valve suddenly closed, pump unit suddenly stopped, the water flow rate changes suddenly, causing a sharp pressure the alternating raised and lowered, this phenomenon is called the water hammer or hydraulic water hammer.
by a pump, the pump stops, the switch valve is too fast, so that the water velocity change drastically, especially sudden stopping of the pump due to water hammer, it exists may damage pipes, pumps, valves, and cause the pump trans turn, and so reduce the pressure in the pipe, so that the occurrence of water hammer prevention is extremely important.
Effect of water hammer damage
the water hammer effect have devastating: due to the generation of water hammer, the pressure in the pipe such that sharply increases to several times more than a normal pressure or even a dozen times, great harm can cause rupture of the pipeline, affecting production and livelihood. The pressure is too high, it will cause cracking of the tube, on the contrary, will lead to low pressure-collapsing of the tube, but also damage to the valve and the fixing member.
How can we prevent "water hammer" mean?
measures to prevent water hammer
1. The switch valve due to excessive water hammer
1, the valve opening and closing valve extension time.
2, and coagulation centrifugal pumps should pump stops when the valve-closed time instead of 15% -30% fully closed.
2. The pump-induced water hammer
1, to exclude the air in the duct, and then filled with water so that the water pump is turned on in the pipeline, all the raised portion should be located a long distance pipeline automatic Vent.
2. Water hammer check valve is closed too fast mainly due to the water discharge pipe caused. Therefore, the abolition of the check valve can eliminate the hazard to stop pump water hammer, and can reduce head loss, saving power consumption. After some realTest, a pumping station can be eliminated, two pumping stations not canceled; canceled check should be carried out without water hammer pressure calculate, reduce and eliminate water hammer, normally closed check valve micro Slow mounted on the large-diameter pipe . Buffer using a check valve mounted on Weibi large diameter of the pump outlet, the pump stops can effectively eliminate water hammer, but there is a certain amount of water when the valve back operation, water wells must have an overflow pipe, abuts against the stop and check valve installed downstream of the water hammer eliminator.
For household water purifiers, where if water pressure is unstable, it is recommended the installation of water purifiers, pressure reducing valve should be configured in order to resolve bottle burst phenomenon "water hammer" caused, in order to ensure use safety.
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