3 results about "Rotation test" patented technology

The present invention belongs to the field of gas turbines, and aims to provide a gas turbine disk overspeed pre-rotation test method for both structural integrity assessment and service life extension. The method comprises the following steps: sequentially performing rotor assembly and dynamic balancing, rotor installation, an ambient-temperature trial run, temperature field calibration, a cold-state pre-rotation test and a hot-state pre-rotation test; and then performing test result validity analysis, and if criteria are met, stopping the process, and if the criteria are not met, repeating the process until the criteria are met, during which dynamic balancing criterion determination, installation criterion determination, vibration amplitude criterion determination, temperature field criterion determination, etc. are required to be performed respectively. The present invention can effectively extend the service life of disks, can reduce the production cost of the disks, and can also complete the structural integrity assessment of the disks.

The purpose of this invention is to provide a high-speed pre-rotation test method for gas turbine disks that simultaneously assesses structural integrity and improves service life. Belonging to the field of gas turbines, the method includes the following steps: sequentially performing rotor assembly and dynamic balancing, rotor installation, room temperature trial run, temperature field calibration, cold pre-rotation test, and hot pre-rotation test. Then, the validity of the experimental results is analyzed; if the standards are met, the test is stopped; if not, it is repeated until the standards are met. During this process, dynamic balancing standard judgment, installation standard judgment, vibration amplitude standard judgment, and temperature field standard judgment are performed respectively. This invention can effectively improve the service life of the disk, reduce the production cost of the disk, and simultaneously assess the structural integrity of the disk.

The application relates to the technical field of spacecraft ground testing and assembling equipment, and discloses a pin puller special for a vector adjusting mechanism for rotation test, which comprises a fixed support and a pin puller body arranged on the fixed support, the pin puller body is internally provided with a cavity, a synchronous driving assembly, a one-way locking assembly and an unlocking releasing assembly are integrated in the cavity, the synchronous driving assembly is used for converting opposite operation forces applied on two sides into synchronous inward movement of two moving rods, the synchronous driving assembly comprises a gear rotatably arranged in the middle part of the cavity, and a first rack and a second rack are respectively meshed and connected on the two sides of the gear. The operator can synchronously pull two locking pins, the inclination and the pin hole wedge jamming caused by the unilateral locking pin preferentially pulled out are avoided, when the operator releases hands or the gloves slip in the middle of operation, the locking pin is prevented from rebounding accidentally, and the safety in use is improved.