A fan includes a support, a motor mounted at the support and including a first rotation shaft, a first blade mounted at one end of the first rotation shaft, a transmission mechanism mounted at the support and connected to another end of the first rotation shaft, and a second blade. The transmission mechanism includes a second rotation shaft. A rotation direction of the second rotation shaft is opposite to a rotation direction of the first rotation shaft. The second blade is mounted at the second rotation shaft. A tilt direction of the first blade is opposite to a tilt direction of the second blade.

A phase adjustment system 100 for a geared compressor 1 includes a phase adjustment jig 50 that is to be detachably provided in the geared compressor 1. The geared compressor 1 includes a drive gear 4 fixed to a drive shaft and having a largest outer diameter among a plurality of gears; a driven gear having a smaller diameter than a diameter of the drive gear 4 and meshing with the drive gear 4; and a gear casing accommodating the drive gear 4 and the driven gear. The phase adjustment jig 50 includes a fifth jig gear 66 that meshes with the drive gear 4 in a state where a frame 51 is fixed to the gear casing; and a manually rotatable handle 70 that is configured to rotate the fifth jig gear 66.

A rotary machine includes a cylindrical rotary shaft extending in a direction of an axis, a fastening bolt having a bolt body that extends in a direction of an axis O in the rotary shaft to form fastening portions at both ends, a pair of rotary bodies each having an end portion in the direction of the axis that is fixed to each of the pair of fastening portions to be in contact with an end surface of the rotary shaft in the direction of the axis, and a bolt extension mechanism that temporarily extends the bolt body in the direction of the axis.

Integrally geared centrifugal compressor systems are described that include eccentric cartridges that house bearings and seals to maintain rotor concentricity for a variety of pinons integrated in a fixed gearbox design to provide multiple impeller speeds with a single gearbox design. In an aspect, a system includes, but is not limited to, a pinion configured to be rotated by a bull gear about a rotational axis; a rotor coupled to the pinion; and an eccentric cartridge configured to house a bearing assembly through which the rotor extends to support rotation of the rotor, the eccentric cartridge having an outer surface and an inner surface, wherein the inner surface is eccentric relative to the outer surface to align the rotational axis with a center axis of the bearing assembly.

Combining at least one centrifugal compression stage and at least one positive displacement compression stage in an integrally geared compressor to allow for different types of compression based on a temperature or a volume of gas to be compressed by the integrally geared compressor.

Included are: a case; a motor provided in the case and having a rotatable shaft; two blowers provided in the case and including impellers that are fixed to a shaft and are capable of being rotated by the motor, the impellers each having multiple blades disposed at predetermined intervals on a circumference of the corresponding impeller; an intake port provided in the case and configured to take air in between the two blowers; and discharge ports provided in the case to each correspond to a one of the two blowers, each configured to discharge the air taken into a corresponding blower through the intake port to the outside. In each of portions that accommodates corresponding one of the two blowers in the case, a side opposite to a side through which air is taken in is sealed off so as to prevent inflow of air.

A compression unit for supplying high and low pressure services to a plant including a single driver associated with two driver shaft-ends projecting apart from the driver, a first driver shaft end and a second driver shaft end, a first unit being operatively connected to the first driver shaft-end and a second unit being operatively connected to the second driver shaft-end.

A separable housing for a transmission wherein the transmission that is to be received in the separable housing has a gear shaft and at least two pinion shafts which are engaged with a gear that is arranged on the gear shaft. The separable housing has at least one first housing element and a second housing element that is connected to the first housing element by a joint of a part. The gear shaft and the at least two pinion shafts can be received in the joint of a part in receptacles on the housing. The joint of a part has a first part-joint stepped section and a second part-joint stepped section, each stepped section forming a different horizontal level in the joint of a part and each stepped section being formed between two of the receptacles of two of the shafts, the stepped sections also being complementarily formed.

A geared compressor includes a plurality of compression units and a compression-unit-driving mechanism which drives the plurality of compression units. The compression-unit-driving mechanism includes a plurality of driven gears which are provided in respective rotation shafts of the plurality of compression units and a plurality of large-diameter gears which are directly or indirectly driven by a drive source and have outer diameters larger than those of the plurality of driven gears. The plurality of large-diameter gears is arranged side by side in a horizontal direction and each of the plurality of large-diameter gears meshes with two or more of the plurality of driven gears.

An integrally geared compressor includes: a drive gear rotated by a motor; an intermediate gear meshing with the drive gear; a first drive side pinion meshing with the drive gear; a first intermediate side pinion meshing with the intermediate gear; a second intermediate side pinion meshing with the intermediate gear at a position away from the drive gear and the first intermediate side pinion; a first compression unit compressing a working fluid by rotation of the first drive side pinion; a second compression unit compressing a working fluid by rotation of the first intermediate side pinion; and a uniaxial multi-stage compressor further compressing the working fluid compressed by at least one of the first compression unit and the second compression unit.