ISO 14617-9:2002 pdf download

ISO 14617-9:2002 pdf download.Graphical symbols for diagrams —Part 9: Pumps, compressors and fans.
3.1
(positive) displacement pump
pump in which the fluid energy is increased in a working chamber that increases and decreases In volume
[iSO 5598)
3.2
rotodynamic pump
pump in which the fluid energy is increased by a rotating impeller
[iSO 5598)
NOTE Th. term centn1uaI p..jnp is somet.nes used instead, but that term curpvvid &u wtvuyndmie pump willi radial hquid flow
3.3
turbo-molecular pump
rotodynamic vacuum pump in which the rotor is provided with discs provided with slots or blades rotating between corresponding déscs wi the stator
(ISO 3529-21
3.4
capacity
dlsplac.m.nt
swept volume
volume absorbed or displaced per stroke or cycle
[150 5598]
3-5
over-centre pump
pump in which the direction of flow may be reversed without changing the direction of rotation of the drive shaft
[ISO 5598]
3.6
uni-flow pump
pump in which the direction of flow is independent of the direction of rotation of the drive shaft
[ISO 5598]
3-7
entrainment pump
vacuum pump ii which a momentum is imparted to the gas molecules i such a way that the molecties are transferred continuously from the inlet to the outlet
(ISO 3529-2)
38
entrapment pump
vacuum pump in which the gas molecules are retained by sorption or condensation on internal surfaces
(ISO 3529-2)
3.9
ejector pump
entrainment pump which uses the pressure decrease due to a Venturi effect and In whch the fluid Is entrained In a high speed liquid stream towards to outlet
pso 3529-2, ISO 5598)
3.10
diffusion pump
entrainment pump In vAi.ch a low-pressure, high-speed vapour stream provides the entrainment fluid
(iSO 3529-21
3.11
adsorption pump
entrapment pump in which the gas is retained mainly by physical adsorption of a material of large real area (for example, a porous substance)
(iSO 3529-2)
3.12
getter pump
entrapment pump in which the gas is retained principally by chemical combination with a getter
(ISO 3529-2)
3.13
getter ion pump
entrapment pump in which the gas molecules are ionized and then transferred towds a surface of the pump on which they are retained by a getter, by means of electric fields, combined or not with a magnetic field
(iSO 3529-2)
3.14
cryopump
entrapment pump consisting of surfaces refrigerated to a low temperature (normaty less than 120 K) sufficient to condense residual gases
(iSO 3529-2)
3.15
electric pump
pump working by feeding electric power directly Into the pump
3.16
induction pump
pump without rotating parts, in which electromagnetic fields exert the necessary force on the pumped medium (normally metals in liquid form).