摘要:
A liquid pump of a screw expander is disclosed, applicable to an Organic Rankin Cycle (ORC). The liquid pump of a screw expander includes a semi-sealed or fully sealed shell. An expander unit and a liquid pump unit are disposed in the shell. The expander unit includes a screw rotor, and the liquid pump unit includes a screw rotor, The rotor of the expander unit is fixedly connected to the rotor of the liquid pump unit. The rotor of the liquid pump unit rotates under driving of the rotor of the expander unit. In the liquid pump of a screw expander applied to the ORC, since a resistance torque of the female rotor is small, the liquid pump does not wear even when the liquid viscosity is low, contributing to high reliability of the liquid pump. Meanwhile, the liquid pump is driven by the screw expander, thereby further improving power generation efficiency of the ORC. In addition, the semi-sealed or fully sealed shell can effectively prevent leakage of a refrigerant.
摘要:
A casing (31) contains a compression mechanism (50) for compressing refrigerant, an expansion mechanism (60) for expanding refrigerant, and a rotary shaft (40) connecting the compression mechanism (50) and the expansion mechanism (60). A heat insulator (90) is provided which partitions the internal space of the casing (31) into a first space (48) in which the expansion mechanism (60) is placed and a second space (49) in which the compression mechanism (50) is placed. The heat insulator (90) is passed through by the rotary shaft (40). An elastically deformable O-ring (92) seals a clearance between the outer periphery of the heat insulator (90) and the inner periphery of the casing (31).
摘要:
A vane air motor configured to prevent uneven wear of vanes is provided. The vane air motor has a cylindrical member having a rotor chamber (19) defined by a circular cylindrical inner peripheral surface (11), and a vaned rotor. A plurality of air discharge openings (50) are provided over a predetermined length range in the axial direction of the rotor chamber. Each pair of axially adjacent air discharge openings are spaced from each other and overlap each other as seen in the circumferential direction of the rotor chamber.
摘要:
An arrangement that can be turned by an assigned hydraulic pressure and flow, related to a chain saw supported by a harvesting unit for crosscutting timber, wherein a bearing arrangement is arranged for the chain saw and oriented between a guide bar housing and the chain saw's drive motor unit, wherewith an oscillatory motion can be activated by a hydraulic control valve, through which hydraulic flow is alternatively controlled via feed or connection lines to the bearing arrangement, for a first or second operating mode. The arrangement is activated via hydrostatic pressure and coordinated with the guide bar housing, and with the drive motor unit, via surrounding perforated discs oriented in parallel and aligned around an axis of rotation for a drive shaft. The hydrostatic affects the arrangement's oscillatory motion for a reciprocal motion pattern, while spent hydraulic oil serves as a lubricating film between the opposing bearing surfaces.
摘要:
L'invention concerne un système hybride motorisé, comportant en combinaison deux cycles moteurs complémentaires, l'un formant un moteur à combustion interne (A), l'autre formant un moteur dit à combustion externe (B) avec pistons (p4, p5, p6) animés par la détente d'un fluide actif, où - le dispositif de distribution du moteur à combustion externe (B) est formé : par un premier tube tournant (20) perforé configuré de manière à assurer l'admission du fluide actif dans les cylindres (c4, c5, c6) dudit moteur, et par un second tube tournant (21) perforé configuré de manière à assurer l'échappement dudit fluide hors desdits cylindres, ou par un boisseau (26) configuré de manière à assurer l'admission et l'échappement du fluide actif dans les cylindres (c4, c5, c6) dudit moteur, - un échangeur thermique (C) est disposé en amont du moteur à combustion externe (B), lequel échangeur est traversé d'une part par les gaz de combustion évacués du moteur à combustion interne (A) et d'autre part par le fluide actif destiné à animer les pistons (p4, p5, p6) dudit moteur à combustion externe (B), ledit échangeur étant configuré de manière à ce que lesdits gaz de combustion chauffent et mettent sous pression ledit fluide actifs.