ベーンポンプの性能におよぼす付加圧装置の効果

概要

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Experiments have been performed in a vane pump-pipe line system to obtain performance of vane pumps and to investigate the effects of the pressure supplying devices on performance of vane pumps.　The dimensionless expressions of specific speed, rotary speed, circumferential velocity of a rotor, discharge, rotation frequency, delivery and suction heads, and delivery and suction powers are introduced.　Performance of vane pumps is expressed by the dimensionless parameters. It is possible to make use of predetermination of performance of a new pump.　Several pressure supplying devices are jointed in a suction line to examine their effects on improvement of performance of vane pumps.　In order to smooth the pressure variation from suctiOn port to delivery one along the casing, the delivery pressure of a booster should be effectively increased rather than its discharge. As the product of delivery pressure and discharge works for the pressure variation in the casing, the booster is more available when it has an additional tank. The expansion line close to the suction port of a pump works as same as the booster, and its work becomes more effective as its vertical height increased.　The vane pump without vane pins will be safely operated by effective control of back pressure to the grooves for the vanes.
山形大学の論文
1980-01-21