Electronically Controlled Non-Return Valve for Hose Burst Stability
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Solution Overview
Problem
Existing valve units for hydraulic actuators lack precise control over movement, especially during pipe ruptures, leading to unpredictable speed increases and inefficiencies in hydraulic systems.
Innovation Solution
A valve system with a logic unit that receives sensor signals and regulates electric current to the coil, ensuring precise control of fluid flow and maintaining valve seat openness, even during pressure drops, using a configuration with multiple pistons and valve seats to manage fluid flow and pressure effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a valve unit with electric current control is used, then control precision is improved, but device complexity increases
Solution Approach 1:
The patent combines the valve unit with a logic unit and sensor system into an integrated control system. The logic unit receives sensor signals and automatically regulates the electric current to the coil, merging control functions into a unified system that improves precision while managing complexity through functional integration.
Solution Approach 2:
The system incorporates sensors that provide feedback signals to the logic unit, which then adjusts the electric current to the coil accordingly. This closed-loop feedback mechanism enables precise control of the valve by continuously monitoring system state and making real-time adjustments to maintain desired performance.
2Productivity
If a pipe rupture occurs during actuator movement, then fluid flow increases, but actuator speed control is lost
Solution Approach 1:
Sensors detect pressure changes or other parameters indicating a pipe rupture and send signals to the logic unit. The logic unit responds by adjusting the electric current to the coil to maintain control over the valve opening, thereby preserving speed control even during abnormal conditions like pipe ruptures.
Solution Approach 2:
The system is designed to detect and respond to pipe rupture conditions before they can cause complete loss of control. By monitoring system parameters and preemptively adjusting valve position through the coil control, the system counteracts the harmful effects of pipe rupture and maintains stable actuator speed.
3Reliability
If the first piston is constantly regulated by pressure, then valve seat closure is improved, but response time decreases
Solution Approach 1:
The patent replaces purely pressure-based mechanical piston control with an electrically controlled coil system. The coil generates magnetic force to actuate the piston, enabling faster response times compared to pressure-only control while maintaining reliable valve seat closure through precise electromagnetic actuation.
Solution Approach 2:
The system dynamically adjusts the electric current to the coil based on real-time sensor feedback and system conditions. This dynamic control enables the piston to respond quickly to changing conditions while maintaining proper valve seat closure, optimizing both response time and reliability through adaptive regulation.
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 system provides precise control over hydraulic actuator movement, preventing sudden speed increases during pipe ruptures and ensuring fluid-tight closure, enhancing operational efficiency and safety in hydraulic systems.
Implementation Method 1
a core is present, which is at least partially surrounded by a coil, wherein a fluid flow from the control chamber to the first port can be regulated by an electric current in the coil
Data Source
AI summary
A valve unit includes a first piston, which has a first opening and a control chamber. A fluid connection between a first and a second port is closed or, in a position defined by the first piston, is held open in the event that a hose which is connected to the first port bursts. A pilot valve (48) is present, which has a core and a coil, and a fluid flow from the control chamber to the first port can be regulated by an electric current in the coil. The current is regulated by a logic unit which is suitable for receiving signals from at least one sensor, in particular a pressure sensor, an inertia detector and/or position sensor and for regulating the electric current in the coil.