1607 results about "Turbine rotor" patented technology

An aircraft engine (10) has: a turbine (15) including a turbine rotor (15C) rotatable about a central axis (A); a scroll case (20) having an inlet (22) fluidly connected to a source of combustion gases and an outlet (23) fluidly connected to the turbine (15), and a conduit (21) extending around the central axis (A) from the inlet (22) to the outlet (23), the conduit (21) spiraling towards the central axis (A); a bearing housing (30) extending around the central axis (A); an exhaust case (15B) disposed downstream of the turbine (15); and a turbine support case (40) secured to the bearing housing (30; 130) and to the exhaust case (15B), the turbine support case (40) having spokes (44) distributed around the central axis (A) and extending along a direction having an axial component relative to the central axis (A), the spokes (44) extending through the conduit (21) of the scroll case (20) and radially supported by the bearing housing (30).

An aircraft engine, has: a turbine including a turbine rotor rotatable about a central axis; a scroll case having an inlet fluidly connected to a source of combustion gases and an outlet fluidly connected to the turbine, and a conduit extending around the central axis from the inlet to the outlet, the conduit spiraling towards the central axis; a bearing housing extending around the central axis; an exhaust case disposed downstream of the turbine; and a turbine support case secured to the bearing housing and to the exhaust case, the turbine support case having spokes distributed around the central axis and extending along a direction having an axial component relative to the central axis, the spokes extending through the conduit of the scroll case and radially supported by the bearing housing.

The invention discloses a hoisting tool for a steam turbine rotor, and belongs to the technical field of hoisting equipment, the hoisting tool for the steam turbine rotor comprises a cross beam and two groups of hoisting frames, the two groups of hoisting frames are symmetrically arranged on two sides of the cross beam, the hoisting frames are slidably connected to the cross beam, and hoisting parts are connected below the hoisting frames. Longitudinal beams are symmetrically and fixedly connected to the two ends of the cross beam, adjusting components are slidably connected to the tops of the longitudinal beams, auxiliary mooring ropes are hung at the bottoms of the longitudinal beams, and traction ropes are arranged at the tops of the longitudinal beams. The lifting belt is used for lifting the steam turbine rotor, compared with cable lifting, the lifting belt is more stable, stress of the lifting belt can be adjusted, accidents caused by uneven stress are avoided, meanwhile, the cable is assisted to lift the steam turbine rotor together, it is guaranteed that the steam turbine rotor is stably lifted, the steam turbine rotor is prevented from falling off when the lifting belt breaks down, and serious accidents are avoided.

A controller for a wind turbine having three rotor blades is provided for controlling activation of individual pitch control of the rotor blades. The controller is configured to receive a flapping load signal from the flapping load sensor of each of the three rotor blades, the flapping load signal indicating a flapping load on each of the respective rotor blades. The controller is configured to determine a statistical discrete parameter of the flapping load of each rotor blade based on the received flapping load signal, the statistical discrete parameter being indicative of a wind event in a wind farm in which the wind turbine operates. The controller is configured to control activation of the individual pitch control based on the respective statistical discrete parameters.

The invention discloses a creep test system of a turbine rotor blade film hole simulation piece and a test method of the creep test system. Comprising a clamping assembly used for fixing a test piece, a loading assembly used for applying a load to the test piece, a strain measuring assembly used for measuring the strain rate of the test piece, a heating assembly used for covering the test piece to form a heating channel, and a cooling assembly used for manufacturing and conveying cooling airflow to flow through the interior of the test piece, the strain measurement assembly is used for measuring the external temperature of the test piece and the internal temperature of the test piece, the control assembly is connected with the strain measurement assembly, the heating assembly, the cooling assembly and the temperature measurement assembly, and the heating assembly is used for manufacturing and conveying high-temperature airflow to flow through the heating channel so as to heat the outside of the test piece to a first set temperature; the cooling assembly is used for cooling the interior of the test piece to a second set temperature, and the heating assembly and the cooling assembly are used for forming a dynamic convection environment around the test piece.

An assembly is provided for an aircraft powerplant. This assembly includes a differential geartrain, a first rotating assembly, a second rotating assembly, a first actuator and a second actuator. The differential geartrain includes a sun gear, a ring gear, a plurality of intermediate gears and a carrier. The first rotating assembly is coupled to the differential geartrain through the carrier. The first rotating assembly includes a first turbine rotor. The second rotating assembly is coupled to the differential geartrain through the ring gear. The second rotating assembly includes a second turbine rotor. The first actuator is coupled to the differential geartrain through the ring gear. The second actuator is coupled to the differential geartrain through the sun gear.

Disclosed in the present invention are a control method and system capable of providing frequency support for a flexible interconnected power distribution network. The method comprises: using a permanent-magnet direct-drive wind turbine connected to a flexible interconnected power distribution network to provide frequency support, measuring a direct-current voltage of a grid-side converter of the wind turbine, calculating a per-unit value and the phase of the direct-current voltage, and calculating the amplitude of a modulation voltage; generating a trigger pulse signal; monitoring the rotation speed of a wind turbine rotor and the rotor position angle of a synchronous generator, and acquiring a per-unit value of optimal power; calculating an active power reference value; on the basis of active power control and current control, outputting a d-axis component and a q-axis component of a modulation voltage of a generator-side converter, and by means of rotating coordinate transformation, generating a three-phase modulation voltage in a stationary coordinate system; and generating a trigger pulse signal by means of a pulse width modulation stage. The present invention enables wind turbines to provide quick response for power distribution networks in a frequency support stage, and prevent rotation speed stalling and suppress secondary frequency drop in a rotation speed recovery stage, thereby improving the support capability of the wind turbines for power grids.