Electromagnetic Relief Valve Control for Low-Power Pressure Setting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In hydraulic circuit systems, existing relief valves require laborious pressure regulation and complex configurations, and electromagnetic relief valves consume excessive power, especially when multiple pressure settings are needed for different operational modes.
Innovation Solution
A relief pressure control device using an electromagnetic relief valve with a controller that sets the energization quantity to adjust the relief pressure, keeping the valve non-energized in normal conditions and only energizing it when the pump pressure exceeds a predetermined threshold, thereby reducing power consumption and preventing pre-leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an electromagnetic relief valve is used to enable regulatable setting pressure in response to controller signals, then multiple relief pressures can be set for different operational modes, but power consumption increases
Solution Approach 1:
The electromagnetic relief valve operates in periodic action by remaining non-energized during normal operation and only being energized temporarily when pump pressure exceeds the threshold. This pulsed energization approach enables multiple relief pressure settings when needed while minimizing overall power consumption during normal operation.
Solution Approach 2:
The system changes the energization parameter of the electromagnetic relief valve based on operating conditions. By adjusting whether the valve is energized or non-energized, and controlling the duration and intensity of energization, the system achieves different relief pressure settings while optimizing power consumption for each operational mode.
2Use of energy by moving object
If the electromagnetic relief valve is kept non-energized in normal conditions, then power consumption is reduced, but pre-leakage may occur when pump pressure exceeds the threshold
Solution Approach 1:
The controller is configured to detect when pump pressure approaches the threshold and energize the electromagnetic relief valve in advance. This preliminary action prevents pre-leakage by ensuring the valve is already in the correct state before the pressure exceeds the threshold, thereby maintaining pressure control stability while minimizing unnecessary energization time.
Solution Approach 2:
The system uses feedback from pressure detection to control the energization state of the electromagnetic relief valve. When pump pressure exceeds the threshold, the controller detects this condition and activates the valve, creating a closed-loop control system that maintains reliability while optimizing power consumption based on actual pressure conditions.
3Adaptability or versatility
If conventional two-stage regulatable relief valves are used, then multiple relief pressures can be set, but pressure regulation work becomes laborious and component configuration becomes complicated
Solution Approach 1:
The patent replaces the mechanical adjustment mechanism of conventional two-stage relief valves with an electromagnetic control system. The electromagnetic relief valve is controlled by electrical signals from a controller, eliminating the need for manual mechanical regulation and complex component configurations while enabling multiple relief pressure settings through electronic control.
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 solution allows for easy setting of relief pressures while minimizing power consumption and preventing energy loss due to pre-leakage, simplifying the configuration and reducing the risk of fluid leakage, thus enhancing operational efficiency and reducing manual labor in pressure regulation.
Implementation Method 1
an electromagnetic relief valve in which a setting pressure is set larger as an energization quantity is larger
Data Source
AI summary
To provide a relief pressure control device in which a relief pressure can be set easily, and further power consumption is suppressed. A relief pressure control device is equipped with a relief valve in which a setting pressure is made variable as a function of an energization quantity, and a controller configured to set at least one relief pressure of a fluid pressure circuit by controlling the energization quantity of the relief valve. The controller energizes the relief valve, when the pump pressure exceeds a predetermined threshold pressure lower than the setting pressure of the relief valve that is in its non-energized state.