The cavitation phenomenon of the centrifugal pump means that the liquid to be delivered is partially vaporized due to the pressure of the saturated vapor at the delivery temperature being equal to or lower than the pressure at the inlet of the pump (actually at the inlet of the blade), causing noise and vibration of the pump. The flow rate, head pressure and efficiency of the pump are significantly reduced. Obviously, cavitation is not allowed in the normal operation of the centrifugal pump. The key to avoiding cavitation is that the pump should be installed at the correct height, especially when transporting volatile liquids with high temperatures. Substituting the Hs1 value into the formula to obtain the installation height Hg=Hs1-Hf0-1=0.78-1.5=-0.72m Hg is a negative value, indicating that the pump should be installed below the pool level, at least 0.72m below the liquid level. Concerned about surprises Label: Centrifugal pump Cavitation Hg Long source Installation height Previous: How to choose the first door lock for home safety Next: Harmful gas sensor and its characteristics SMD LED means surface mount Light Emitting Diode, SMD chip helps to improve production efficiency, as well as application in different facilities. It is a solid-state semiconductor device that can directly convert electricity into light. Its voltage is 1.9-3.2V, the red light and yellow light voltage are the lowest. The heart of the LED is a semiconductor chip. Encapsulated with epoxy resin. The semiconductor wafer is composed of two parts, one part is a P-type semiconductor, in which holes dominate, and the other end is an N-type semiconductor, which is mainly electrons. But when these two semiconductors are connected, a P-N junction is formed between them. When the current acts on the chip through the wire, the electrons will be pushed to the P area, where the electrons and holes recombine, and then emit energy in the form of photons. This is the principle of LED light emission. The wavelength of light is also the color of light, which is determined by the material forming the P-N junction. Light Emitting Diode Smd,High-Power Light Emitting Diode,Smd Light With Led,Smd Led0805 Red Lights Dongguan XINYUDA Technology Co., Ltd. , https://www.gdxige.com
Cavitation of long source centrifugal pump