Flywheel Nitrogen Energy Storage for Ultrahigh-Speed Bar Shearing
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Solution Overview
Problem
Existing high-speed bar precision shearing devices rely on complex hydraulic systems for energy storage, leading to low energy utilization, high costs, and insufficient cutting speeds, failing to achieve the strain rate required for ductile-brittle transition in materials.
Innovation Solution
An ultrahigh-speed bar precision shearing device using alternating current servo motors to drive a flywheel for spirally compressing nitrogen, eliminating hydraulic systems and achieving high-speed strikes of 20-30 m/s through energy storage, with improved energy utilization and reduced active load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a hydraulic pump station is used to compress gas for energy storage, then energy storage is achieved, but the hydraulic system becomes complex, energy utilization rate decreases, price increases, and control difficulty increases
Solution Approach 1:
The patent extracts and removes the hydraulic system from the energy storage mechanism, replacing it with a direct mechanical flywheel-based compression system. This eliminates the complex hydraulic pump station, valves, and fluid transmission components while retaining the core energy storage function through mechanical means.
Solution Approach 2:
The patent replaces the hydraulic mechanical system with a direct mechanical system using a flywheel and compression mechanism. The flywheel stores rotational kinetic energy and directly drives the gas compression process, substituting hydraulic fluid transmission with solid mechanical components that improve energy utilization and simplify the system.
2Use of energy by stationary object
If a hydraulic system is used for energy storage, then energy storage is achieved, but energy utilization rate is low
Solution Approach 1:
The patent replaces the hydraulic system with a direct mechanical flywheel system, eliminating energy losses associated with hydraulic fluid compression, leakage, and transmission. The mechanical connection between the flywheel and compression mechanism provides direct energy transfer with minimal losses, significantly improving energy utilization rate.
Solution Approach 2:
The flywheel performs preliminary energy storage by accumulating rotational kinetic energy before the shearing operation. This preliminary action allows the system to store energy efficiently during non-operating periods and release it rapidly when needed, improving overall energy utilization by avoiding continuous hydraulic system operation.
3Use of energy by stationary object
If a hydraulic system is used for energy storage, then energy storage is achieved, but control difficulty is high
Solution Approach 1:
The patent removes the hydraulic control system including pump stations, pressure valves, and fluid control mechanisms. The mechanical flywheel system provides inherent control through its rotational inertia and direct mechanical coupling, eliminating the need for complex hydraulic control circuits and making the system easier to operate and control.
4Speed
If the hammer head speed is less than 10 m/s, then the existing hydraulic system can operate, but the strain rate required for ductile-brittle transition cannot be achieved and active load is large
Solution Approach 1:
The patent employs dynamic principles by using a flywheel to store and rapidly release kinetic energy, enabling the hammer head to achieve ultrahigh speeds of 20-30 m/s. The flywheel's rotational inertia provides the necessary force accumulation, allowing the system to deliver high-speed impacts with reduced peak loads compared to traditional hydraulic systems that struggle to achieve comparable speeds.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves high-speed cutting with improved energy efficiency and fracture surface quality by utilizing a flywheel-driven nitrogen compression system, reducing the strain rate requirement and enhancing the energy utilization rate.
Implementation Method 1
a flywheel to spirally compress nitrogen for energy storage
Implementation Method 2
driving a flywheel to spirally compress nitrogen for energy storage
Data Source
AI summary
An ultrahigh-speed bar precision shearing device adopting a type of alternating current servo motors driving a flywheel to spirally compress nitrogen for energy storage includes a frame structure, a high-pressure air chamber mechanism, a hammer head movement mechanism and a mold are installed on the frame structure from top to bottom, the high-pressure air chamber mechanism cooperates with the hammer head movement mechanism to strike the mold, and bars are cut off and separated under the effect of the mold. The present application omits a complex hydraulic driving system, and ultrahigh-speed striking (20-30 m/s) of a hammer head is achieved in a manner of a flywheel spirally compressing nitrogen for energy storage; and control is simple, the return speed of the hammer head is high, and the energy utilization rate is high.