Crawler type piling rig,Solar piling drill rigs is widely used in photovoltaic, foundation drilling, it is most advanced hydraulic drilling rig for solar drilling application. The rig can be operated in very flexible way.
As per the emission standard which requires a quality and better emission diesel engine in most of European countries and North America,the customized-made PV piling rig will be the unique solution
The feed can be turned left and right in different angle to fit the variable application. The full coverage area for drilling is seriously considered to achieve extremely drilling position. For solar power station, Photovoltaic drilling, pile drilling and highway guardrail drilling as well as construction drilling is most suitable.
Solar pile driver has some unique design to has it to operate in every sharp slope area and in order to make operator a very vertical borehole in any position.
Yikyui PV pile driver has rotary boom with rotary platform. With this function, operator can drill in very accurate position with less moving of Pile drilling machine, which can save time and higher quality borehole.
Foundation Engineering,Crawler Type Piling Rig,Crawler Piling Machine,Crawler Piling Henan YK Prospecting Machinery Co., Ltd , https://www.yyboreholedrilling.com
　　
Produce the phenomenon of cavitation criteria
　　
Cavitation bubbles begin to appear at the blade inlet edge (nascent cavitation, NPSH) until the defined maximum bubble length (eg bubble length 5mm) is reached. In bubble observation experiments, the pressure at the inlet was gradually reduced until the first visible cavitation bubble appeared.
　　
· Cavitation of the pump may be caused by cavitation head lift (ΔH), reaching the defined maximum descent value △ H = 0.03H or in some high-speed operation of the screw pump often appear △ H = O.OOH (refers to the production of cavitation The initial stage of head descent). The corresponding NPSH value with NPSH. And NPSH. To represent.
　　
• Cavitation of the pump may decrease in efficiency (Δη) due to cavitation, reaching the defined maximum descent value (eg Δη = 0.03η).
　　
Pump cavitation may be due to cavitation head (â–³ H) decreased, leading to head failure (drop).
　　
Cavitation of the pump Material corrosion of the volute pump, which may be caused by cavitation, reaches the maximum defined for a fixed period of time.
　　
Pump cavitation may increase the noise level caused by cavitation, reaching the maximum noise level defined.
Besides piling drilling, it can do blasting hole drilling for mining.
It is fully hydraulic control solar piling machine, it can has highest drilling efficiency for operator, especially for time limited project. And the key components are from top end brand, such as Deutz AG diesel engine,Cummins engine, Yuchai diesel engine,Permco pump,Eton motor, Parker hoses and Rexroth pump. All these key components can make sure solar pile driving Machine has longest lifetime and least break down.
The Photovoltaic rig`s drilling model can be selected from impact hammer to rotary head for different geological structure.
Photovoltaic pile driver is not only for photovoltaic or soloar piling drilling, it also can work for water drilling and foundation drilling etc. multi-functional drilling work.
Pump cavitation phenomenon judgment standards
Cavitation refers to the phenomenon of the formation of a hollow product such as a vapor bubble in a liquid water stream and a sudden rupture. For centrifugal pump cavitation in the emergence of scale and impact of cavitation have different standards , gas and steam cavitation and cavitation is different.