Centrifugal Supergravity Flow Control for Precise Liquid Leveling
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Solution Overview
Problem
Achieving large-scale, rapid, and accurate dynamic liquid level regulation in a centrifugal supergravity environment is challenging due to difficulties in providing continuous high-flow water supply during high-speed centrifugal machine operations, which is crucial for studying hydraulic structure failure mechanisms.
Innovation Solution
An apparatus and method for accurate flow control in a centrifugal supergravity environment, comprising a control center, oil supply module, sensor module, and execution module, with dual reciprocating water pump sets and sensors for real-time feedback and closed-loop control, allowing for precise liquid level management and flow stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a centrifugal machine runs at high speed during the experiment, then the supergravity environment is achieved for scale reduction, but it becomes very difficult to provide large-flow continuous water flow for the model
Solution Approach 1:
The water supply system is divided into multiple components: water storage tanks (upper and lower), reciprocating water pumps, oil distributors, and servo actuators. This segmentation allows each component to perform its specific function efficiently under centrifugal conditions, with the storage tanks providing reservoir and the pumps delivering controlled flow despite high-speed rotation.
Solution Approach 2:
An oil distributor system with servo actuators is introduced as an intermediary mechanism to control the reciprocating water pumps. The oil supply module, including the oil distributor servo valve, mediates between the control center and the water pumps, enabling precise flow control in the supergravity environment where direct control would be difficult.
2Manufacturing precision
If large-scale dynamic and accurate liquid level regulation is required, then the experiment success is improved, but it is very difficult to provide large-flow continuous water flow for the model
Solution Approach 1:
A feedback control system is implemented with sensors monitoring liquid level, pump position, and flow rate. The control center receives this feedback and adjusts the oil distributor servo valve accordingly, enabling accurate liquid level regulation despite the difficulty of providing large-flow continuous water supply under centrifugal conditions.
Solution Approach 2:
The system replaces direct mechanical control with a hydraulic control system using the oil distributor and servo actuators. This substitution allows for more precise and responsive control of the reciprocating water pumps, achieving accurate liquid level regulation while maintaining large-flow capability.
3Measurement precision
If sensors and execution modules are deployed in the supergravity environment, then real-time monitoring and control are achieved, but the device complexity increases
Solution Approach 1:
The control system is designed with multi-functional components. The control center integrates multiple control functions, the oil distributor serves both as a hydraulic control device and a positioning mechanism, and the sensors provide multiple measurement capabilities (liquid level, position, flow rate) from a single integrated system, reducing overall complexity despite the sophisticated requirements.
4Stability of the object's composition
If dual reciprocating water pump sets are used with support components, then the cantilever structure stability is improved, but the device complexity increases
Solution Approach 1:
The support components are designed to counteract the centrifugal forces acting on the reciprocating water pumps and servo actuators. By positioning support components at strategic locations, the system creates counterbalancing forces that stabilize the cantilever structures during high-speed rotation, preventing excessive bending and vibration.
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
Enables large-flow continuous water supply and dynamic accurate liquid level control, facilitating the study of large-time and spatial evolution of rock and soil bodies, such as dams, and providing stable test conditions for simulating the evolution and catastrophe of hectometer-level rock and soil bodies.
Implementation Method 1
The supergravity environment provided by a centrifugal machine can reduce the effective stress field of a prototype on a scale model
Implementation Method 2
the oil distributor servo valve is installed on the oil distributor and used for controlling an output flow of the oil distributor
Implementation Method 3
each reciprocating water pump set consists of the servo actuator and a reciprocating water pump connected in series
Implementation Method 4
the sensor module includes a liquid level sensor, a displacement sensor and a flow sensor, which are respectively configured for collecting liquid level information of the model box, piston position information of the servo actuator and water supply flow information of the model box
Data Source
AI summary
An apparatus and a method for accurate flow control in a centrifugal supergravity environment. The apparatus comprises a control center, an oil supply module, a sensor module, an execution module and a centrifugal machine; the control center and the oil supply module are deployed in a normal gravity environment, and the sensor module and the execution module are deployed in a supergravity environment. According to the present application, the liquid level information of a model box, the piston position information of a servo actuator and the water supply flow information of the model box are collected by a sensor, and the information data are processed; control of the servo actuator is achieved by controlling an oil distributor; the flow fluctuation of a reciprocating water pump is weakened by the active complementation of flows of dual pump sets.