液压相关概念(国外英文资料).docVIP

液压相关概念(国外英文资料) What is the difference between the hydraulic pump and the pressure pump? Hydraulic pump is to provide power, the mechanical energy into hydraulic energy, and the pressure pump is to test the size of the pressure, in order to adjust the flow rate What is hydraulic shock? Whats the cause? In hydraulic systems, a sudden increase in pressure occurs when the oil path is suddenly closed or reversed. This phenomenon is called hydraulic shock. The main cause of hydraulic impact is inertial force of the high-speed moving parts of hydraulic speed change sharply, and some hydraulic components response action is not sensitive enough. When the tube oil movement to a certain speed, if at a certain moment quickly truncated oil flow channels (such as closing the valve, the oil liquid) from a numerical flow in a moment to zero, the oil flow kinetic energy is transformed into extrusion oil, so that the pressure increased sharply, causing the hydraulic impact. The inertial force components of high speed will cause the pressure in the system shock, such as cylinder parts to reversing valve, quick closing cylinder original oil pipeline, the oil is no longer discharged, but still in the piston due to inertia movement caused by a sharp rise in pressure caused by pressure shock. In hydraulic system, due to the insensitivity of some hydraulic components, for example, the oil circuit can not be opened in time, it will cause rapid rise of pressure and impact About vacuum generation A vacuum generator is the heart of any vacuum system. A vacuum blower, a vacuum pump, or a vacuum generator are selected to generate a vacuum depending on the application and the required vacuum. If you want a larger pumping capacity and large vacuum, you need to select the vacuum blower; if there are certain requirements for the vacuum degree, you need to select the vacuum pump or vacuum generator; if you need to quickly open or closed loop vacuum, vacuum generator is your ideal choice. Since the va