Commonly used hydraulic terms and hydraulic accessories terminology

Hydraulic circuit Hydraulic system composed of a variety of hydraulic components Hydraulic circuit components with some functions Circuit diagram Hydraulic circuit diagram shown by hydraulic symbols Symbol Hydraulic pressure unit consisting of a hydraulic pump, a driving motor, a fuel tank, a relief valve, and the like Or hydraulic unit including control valve Nominal pressure Maximum pressure that can be continuously used Back pressure Pressure acting on the oil return or pressure application side of the hydraulic circuit Impact pressure [Force] Increasing pressure during the transition The maximum value of opening pressure [force] such as one-way valve or relief valve, when the pressure rises to the valve starts to open, the pressure reaches a certain flow pressure off pressure [force] such as one-way valve or relief valve, when the valve inlet The pressure drops to the valve starts to close, the flow decreases to a certain amount of pressure below the rated flow under certain conditions, to ensure that the flow rate of flow generally refers to the hydraulic pump in a unit of time the volume of liquid output displacement displacement pump (or motor) Fluid volume per output revolution (or input) Fluid Power The power of a fluid, which is actually expressed as the product of flow and pressure for the hydraulic pressure The main conduits for the conduits and lines that carry the working fluid include the suction lines, pressure lines and return lines. The drain lines refer to the return lines that drain the oil, or the lines that lead it into the tank pass through or within the element A machined method or cast fluid conduit passage port connects the port element to the opening of the passage for conducting fluid to reduce the area of ​​the flow passage to reduce the flow cross-sectional area so as to provide a mechanism for the internal resistance of the passage or passage to have long orifice throttling and Thin-blade throttling spool valve spool (cylindrical spool) with the cylindrical sliding surface with its axial movement, the flow path opening and closing of the parts drain from the hydraulic components of the channel (or pipeline), to the tank Or current collectors or the return of this oil or the phenomenon of such oil return oil leakage from the normal position should be sealed a small amount of oil flowing out of the static seal for static parts to prevent liquid leakage dynamic seal for the relative sliding part of the Sealing Fluid Closure Phenomenon In the interior of a slide valve type valve or the like, unbalanced pressure distribution to the center shaft occurs due to uneven flow, and the valve body is pressed against the valve body (or the valve sleeve) Pressure phenomenon inoperable cavitation flow of the liquid, on a local scale, down to the saturated vapor pressure or air separation pressure, the separation phenomenon due to the generation of steam and dissolution of air bubbles is generated, i.e. cavitation. When bubbles collapse in the flow, they can cause overpressure in the local area and generate flow jumps such as noise. In the governor valve (flow control valve with pressure compensation), when the fluid begins to flow, the flow rate suddenly exceeds Setpoint chattering In order to reduce the effects of friction and fluid tightness on the slide valve, and to improve its characteristics, the higher frequency vibrations are applied. Hydraulic balance Hydraulic fluid is used to balance the load (including the unit itself) Actuator Transmission of fluid with medium as medium Power supply Throttle mode Throttle valve installed on the inlet side of the actuator Regulating the operation speed by throttling Method of outlet throttling Throttle valve is installed on the outlet line of the actuator , The way to adjust the speed by throttling Bypass throttling way A part of the flow to the actuator flows back to the tank through the throttling valve installed in the bypass pipe to adjust the speed of the actuator Actually, Method of combining the electric components such as the electromagnet into the hydraulic manipulator Pilot control method Pressure controlled by the pilot valve or the like Hydraulic pressure A device that uses the pressure of a fluid to transmit power. The use of positive displacement hydraulic pumps and hydraulic actuators (hydraulic cylinders or hydraulic motors) in such devices Commonly used hydraulic terms - Hydraulic accessories and other terminology Filters Elements that filter out solid particles in the fluid by filtration, In addition to the filters used in pressure lines and vent lines, filters for the filter tank in the pipeline belong to such accumulators as containers for storing liquids in a pressurized state. Such stored Liquid can be used as a temporary power source, such as pressure relays when the fluid pressure reaches a predetermined value, the components that make the electrical contact Hose assembly at both ends of the hose pressure hose connector connector pipe or pipe installed Hydraulic components, which is a fluid in the general assembly and disassembly of the connector Tank storage Hydraulic oil container floor and the pipe connection port on one side, the control valve with seals installed on it, for piping assistance Plate Road plate (manifold) within the channel from the role of the pipeline, the external security of hydraulic parts, there are a lot of connection plate mounting plate for hydraulic equipment Or Hydraulic fluid in hydraulic system Fluid used in hydraulic equipment or other liquid Flame-resistant hydraulic fluid This is a non-flammable hydraulic fluid that can prevent fires to the maximum extent possible