Abstract:
PURPOSE: A rotator for a permanent magnet electric machine is provided to maintain a plurality of permanent magnets between a rotator disk and a retaining ring in an axial direction by fixing the retaining ring to the second end of a magnet support band. CONSTITUTION: A rotator disk is radially extended from a central axis(18) of a rotator(12). A magnet retaining tap is radially extended from a magnet retaining band(30). A retaining unit fixes the magnet retaining band to the rotator disk. The retaining unit includes a plurality of mechanical coupling units. A permanent magnet(14) is radially maintained between the magnet retaining tap and the magnet retaining band.
Abstract:
PURPOSE: A nest type torsional damper for an electric machine is provided to reduce the whole length of a generator facility of a driving system, thereby more simplifying it. CONSTITUTION: A nest type torsional damper for an electric machine includes a shaft(20), a shaft segment(26), and a shaft slot(38). The shaft segment has a circulation type around the shaft. The shaft segment is automatically connected to the shaft. The shaft slot increases the torsional compliance of the shaft segment. The shaft slot extends through the wall(40) of the shaft segment. The shaft slot is materially extended to longitudinal direction according to the shaft segment. The shaft segment is connected to the shaft through an end segment.
Abstract:
A wind turbine assembly with a driving device for raising and lowering a wind turbine between a lower end and an upper end of a wind turbine tower comprises a guide member extending longitudinally along the outer surface of the tower, a sleeve member coupled to the wind turbine, and means for raising and lowering the sleeve member between the upper end and the lower end of the tower along the guide member. The sleeve member has an inner diameter that is larger than an outer diameter of the tower, and is slidably coupled to the tower. The sleeve member also includes a slot configured to engage with the guide member.
Abstract:
A thrust bearing (18) for a rotary machine (10) includes first, second and third layers (24, 26, 28). The second layer (26) includes a corrugated foil arranged between the first and third layers. The corrugated foil includes a wall having peaks (58) engaging the first layer and valleys (60) engaging the third layer. A depression (62) is arranged in the wall between first and second peaks. The depression is spaced from the first and third layers. The first layer (24) includes multiple arcuate top foils that are arranged adjacent to a thrust runner (16) of a rotatable shaft (12). A corresponding number of arcuate corrugated foils may be used to support the top foils. The third layer (28), which is provided by an annular main plate, includes multiple arcuate spacers (30) arranged circumferentially on the main plate. The spacers are generally aligned with a trailing edge (40) of the top foils. The depressions decrease the stiffness of the bump foils. The spacers direct the axial load through the thrust bearing in a desired manner.
Abstract:
A turbine starter (10) is provided including a housing (21) defining a fluid passageway (22) with an inlet (24) and an outlet (26). A turbine rotor (16) is supported in the housing (21) and includes blades (18) arranged in the passageway (22) between the inlet (24) and the outlet (26). The rotor (16) is movable within the passageway (22) at a speed with a fluid exiting the blade (18) toward the outlet (26). The spoiler (34) is arranged in the passageway (22) between the rotor (16) and the outlet (26). The spoiler (34) deflects the fluid exiting the blade (18) and reduces the rotor speed. Preferably, the present invention spoiler (34) is utilized to reduce the maximum speed at the no-load condition. The angle, number, position, and other characteristics of the spoiler (34) may be tailored for the particular turbine and a particular speed for which it is desirable to reduce.
Abstract:
A starter is provided including a housing defining a fluid passageway with an inlet and an outlet. A turbine rotor is supported in the housing and includes blades arranged in the passageway between the inlet and the outlet. The rotor is movable within the passageway at a speed with a fluid exiting the blade toward the outlet. The spoiler is arranged in the passageway between the rotor and the outlet. The spoiler deflects the fluid exiting the blade and reduces the rotor speed. Preferably, the present invention spoiler is utilized to reduce the maximum speed at the no-load condition. The angle, number, position, and other characteristics of the spoiler may be tailored for the particular turbine and a particular speed for which it is desirable to reduce.
Abstract:
The expense of a bearing employed at the interface of a yoke (22) and a propeller blade pin (14) in a variable pitch propeller assembly is reduced in a bearing construction (16) wherein a bearing race (48) includes a crowned surface (50) adapted to engage a slot (20) in the yoke (22) and having a profile (Pi) wherein the diameter at one side (88, 90) of the race (48) is less than the diameter at the opposite side (90, 88) of the race (48).
Abstract:
A regenerable high capacity carbon dioxide (CO2) sorbent is operated to remove substantially all of the CO2 present in either a dry, or a humid environment. The sorbent is an amine compound which is composed predominantly of secondary amine groups, and includes one or more functional nitrile groups. Primary and tertiary amine groups form a minor percent of the sorbent. The reaction product of tetraethylenepentamine (TEPA) and acrylonitrile (AN), which reaction product will be referred to hereinafter as "TEPAN" is a preferred sorbent. The addition of one or more nitrile functional groups to TEPA by reason of the reaction between AN and TEPA converts most of the primary amines in TEPA to secondary amines in TEPAN. We have discovered that the presence of predominantly secondary amines in the sorbent by more than two and one-half times, as compared to a TEPA sorbent bed; and the use of TEPAN as the sorbent bed also significantly reduces amine volatility to low levels which are immeasurable. The sorbent bed of this invention is also easily regenarable.
Abstract:
An AC-to-DC converter obtains phase and amplitude signal information from a displacement transducer that is excited by an AC excitation signal and provides an AC sensor signal indicative of transducer position. The converter includes a first rectifier circuit that receives and sums the AC excitation signal and the AC sensor signal, and rectifies the sum to provide a rectified summed excitation and input signal indicative thereof. A second rectifier circuit receives and rectifies the AC excitation signal, and provides a rectified excitation signal indicative thereof. A summing circuit computes the difference between the rectified summed excitation and input signal and the rectified excitation signal, and provides a signed DC signal indicative of displacement transducer position. Advantageously, the AC-to-DC converter of the present invention performs summing and difference functions directly and provides a signed DC signal representative of the AC amplitude and phase input of the transducer output, thus eliminating the need for an analog-to-digital converter (ADC) and the support of an associated processor.
Abstract:
A rotor (10) is provided for a dynamoelectric machine. The rotor (10) includes a rotor shaft (12) and a laminated core (14). The rotor shaft (12) is adapted to mount the rotor (10) for rotation about an axis (13) of rotation in a dynamoelectric machine. The laminated core (14) includes a shaft receiving opening (42) extending along the axis (13). The opening (42) is defined by a plurality of helical lands (44) separated by a plurality of helical grooves (46), with both the lands (44) and the grooves (46) extending along the shaft (12). The lands (44) are engaged with a shaft (12) to mount the core (14) to the shaft (12) for rotation therewith about the axis (13). The grooves (46) are equally angularly spaced about the axis (13) and extend radially outward from the lands (44) and the shaft (12), whereby rotation of the shaft (12) pumps coolant through the grooves (46) to cool the rotor (10).