液压与气压传动（英汉双语）第2版教学课件作者陈淑梅第6章Chapter_6课件.pptVIP

Chapter 6 Auxiliary Components for Hydraulic Systems 6.1 Accumulators 6.2 Filters 6.3 Reservoirs 6.4 Piping/Tubing Connectors 6.5 Seals and Sealing Devices 6.1 Accumulators 6.1.1 Operating principles 6.1.2 Applications 6.1.3 Calculation of parameters 6.1.1 Operating principles a) Piston type 1. Filled in oil fluid (accumulation) It is an equilibrium state of pressure difference on the two sides of upper and down on the interlayer with the operating oil volume as V1 after displacement out oil fluid (release) shown in Fig. 6-2a. When operating oil pressure in the accumulator is increased with the oil pressure in hydraulic system,the interlayer losses equilibrium and moves up under the action of operating difference, as shown in Fig. 6-2b. 6.1.2 Applications 6.1.3 Calculation of parameters 6.2 Filters 6.2.1 Functions of a filter 6.2.2 The types of filters 6.2.1 Functions of a filter 2.Depth-type filters The principle of magnetism filters is an absorbent-type element, which absorbs the ferrous particle in the oil. However it cannot absorb the other nonferrous particle. So it is usually combined with other type of filters and used in hydraulic system for metal-cutting machine tool. 6.3 Reservoir Fig. 6-5 A small separate reservoir 6.4 Piping/Tubing Connectors 2. Connectors 6.5 Seals and Sealing Devices 3. Lip style sealing 4.Compound Sealing your suggestions  are welcome! Fig. 6-1 Charged gas accumulator (piston type) Fig. 6-10 A quick connector 1-Pad 2，10- Connection body 3，7，12- Spring4，11- Core of no-return valve 5-“O” ring seal 6-Shell 8-Steel ball 9-Spring ring The sealing devices are used to prevent oil from internal and external leakage, hold back pollutant and keep the system pressure. Types and characters: There are many kinds of sealing devices. According to the movement of the sealing devices,there are two main kinds of sealing dev