4 results about "Work Measurement" patented technology

The utility model discloses a calibration device for a steam turbine controller of a power plant, wherein the outer end of a work measurement box is connected to a cooling box; cold air is introduced into the cooling box; one side end of the work measurement box is connected to a steam supply mechanism; one side end of the cooling box is connected to a steam supply mechanism; a calibration mechanism is arranged inside the work measurement box; the calibration mechanism includes a sliding lifting plate, a lifting rod assembly, a measuring back plate and a lifting sliding groove; a sliding lifting plate is provided inside the work measurement box for sliding movement; the upper end of the sliding lifting plate is connected to the lifting rod assembly; the other side end of the work measurement box is connected to the measuring back plate; a lifting sliding groove is provided on the measuring back plate; the other side end of the lifting rod assembly is passed through the lifting sliding groove. The utility model provides a calibration device for a steam turbine controller of a power plant, which can reflect the size of the work done by the steam in the form of gravitational potential energy through the weight of the sliding lifting plate itself and the height of the rise, thereby realizing the inspection of the actual situation.

The invention relates to a nonlinear blade flutter evaluation method based on accumulated work measurement and fatigue life, which comprises the following steps of: obtaining the maximum allowable vibration amplitude of a blade by taking the fatigue life as a target, and enabling the blade to vibrate according to the maximum allowable vibration amplitude on the premise of considering blade nonlinearity caused by overlarge amplitude in simple harmonic vibration of the blade, and solving the unsteady flow by using a harmonic balance method to obtain pneumatic accumulated work, and judging whether the flutter characteristic of the blade meets the safety requirement of the design or not according to the positive and negative accumulated work. According to the method, whether the blade vibration has the risk of amplitude overrun or not is judged on the basis of accumulated work measurement and fatigue life, the problem of conservative chatter linear analysis is effectively solved, and the blade chatter judgment precision is improved.

The application discloses a multitask work hour measurement cycle timing system and method, and belongs to the technical field of timing equipment. The system comprises a multitask management module, a timing control module, a time display module, a data storage module, a data management module, a mobile adaptation module and an offline support module, can simultaneously independently time a plurality of production tasks, each timing unit can be independently named and equipped with a complete control button; the method realizes efficient timing through six steps of task initialization, timing control, cycle recording, data storage, data management and desktop shortcut creation. The system supports cycle recording one-key operation, centralized data storage and CSV format export, is adapted to multiple devices through responsive design and supports desktop shortcut creation, can clearly distinguish different tasks, and provides an accurate, convenient and systematic work hour measurement solution for industrial production.

The present invention discloses a calibration device for a power plant steam turbine controller and a calibration method thereof. The calibration device includes a work measurement box; one side end of the work measurement box is connected in communication with a steam supply mechanism; the outer end face of the work measurement box is connected to a cooling medium transmission mechanism; a calibration mechanism is provided inside the work measurement box; the calibration mechanism includes a sliding lifting plate, a lifting rod assembly, a measurement back plate and a lifting sliding groove; the sliding lifting plate is slidably arranged inside the work measurement box; the upper end of the sliding lifting plate is connected to the lifting rod assembly; the other side end of the work measurement box is connected to the measurement back plate; a lifting sliding groove is formed on the measurement back plate; the other side end of the lifting rod assembly passes through the lifting sliding groove. The calibration device for a power plant steam turbine controller and the calibration method thereof provided by the present invention can reflect the work done by steam in the form of gravitational potential energy through the weight of the sliding lifting plate itself and the height it rises, so as to realize the inspection of the actual situation.