Hydraulic Pump Drive Pressure Control for Adaptive Energy Use
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Solution Overview
Problem
Existing hydraulic drive systems for building material pumps lack efficient energy management and adaptive pressure control, leading to suboptimal energy consumption and operational efficiency.
Innovation Solution
A hydraulic drive system featuring a controllable pressure relief valve unit and control unit that automatically adjusts limit pressure based on user-defined operating parameters, allowing for variable and needs-based energy consumption, with features like proportional pressure control and integration with a drive motor for efficient energy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed limit pressure is maintained in the hydraulic circuit, then the system ensures stable operation and reliable pressure supply, but energy consumption increases unnecessarily during low-demand operations
Solution Approach 1:
The pressure relief valve unit is designed with electrically controllable proportional pressure relief valves that can dynamically adjust the limit pressure setting based on actual operational conditions. The control unit receives signals from sensors monitoring operating parameters and automatically modifies the pressure setting, transforming a static pressure system into a dynamic one that adapts to varying demands, thereby reducing energy consumption during low-demand operations while maintaining stability when needed.
Solution Approach 2:
The system changes the pressure parameter dynamically by using the proportional pressure relief valves to adjust the limit pressure setting according to operational conditions. The control unit modifies the pressure parameter in response to sensor feedback, allowing the hydraulic circuit to operate at optimal pressure levels for each specific operating condition rather than maintaining a constant high pressure setting, thus resolving the contradiction between reliability and energy consumption.
2Use of energy by moving object
If the limit pressure is continuously adjusted based on operating conditions, then energy consumption is optimized, but the system complexity increases due to additional control components
Solution Approach 1:
The control unit serves multiple functions: it monitors operating parameters through sensors, processes the signal information, determines optimal pressure settings based on predefined criteria, and controls the proportional pressure relief valves. This multi-functional approach consolidates what could be multiple separate components into a single integrated control system, optimizing energy consumption while minimizing the increase in system complexity.
Solution Approach 2:
The system replaces traditional mechanical pressure regulation mechanisms with an electrically controlled proportional pressure relief valve system. Instead of complex mechanical linkages and manual adjustment mechanisms, the invention uses electrical signals from sensors to electronically control the pressure setting, substituting mechanical complexity with simpler electronic control systems that achieve the same or better energy optimization results.
3Device complexity
If manual pressure adjustment is used, then the system structure remains simple, but the adaptability to varying operational conditions is poor
Solution Approach 1:
The system incorporates sensors that continuously monitor operating conditions and feed this information back to the control unit. The control unit processes this feedback and automatically adjusts the limit pressure setting through the proportional pressure relief valves, creating a closed-loop control system. This feedback mechanism enables the system to adapt to varying operational conditions automatically, significantly improving adaptability while maintaining relatively simple system structure through intelligent control.
Solution Approach 2:
The hydraulic drive system is designed to automatically adjust its own operating parameters without external intervention. The sensors detect operational conditions, the control unit processes this information, and the proportional pressure relief valves automatically modify the pressure setting, enabling the system to serve itself and adapt to changing conditions without requiring manual adjustment or complex external control mechanisms.
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
This solution enables adaptive energy management, reducing energy consumption by adjusting pressure settings according to operational conditions, thereby optimizing the performance and efficiency of the building material pump.
Implementation Method 1
The pressure relief valve unit (6, 24) is designed for the automatic, variable or adjustable setting of a limit pressure (p30, p31/32) of hydraulic fluid (HF) in at least one section (30, 31, 32) of the hydraulic circuit (101) within a pressure range (pmin, pmax)
Implementation Method 2
The feed pump (2) is designed for the automatic supply of hydraulic fluid (HF) into the hydraulic circuit (101)
Data Source
Figure 1
Figure 2
AI summary
A hydraulic drive system (100) for a construction material pump (100) comprising: - a hydraulic circuit (101) for hydraulic fluid (HF); - a feed pump (2), which is designed to feed hydraulic fluid (HF) into the hydraulic circuit (101); - at least one controllable pressure-limiting valve unit (6, 24), which is designed for variable adjustment of a limit pressure (p30, p31/32) of hydraulic fluid (HF) of at least one portion (30, 31, 32) of the hydraulic circuit (101) within a pressure range (pmin, pmax); and - a control unit (27), which is designed to control the pressure-limiting valve unit (6, 24) according to at least one operating parameter (BP) of the hydraulic drive system (100) and/or according to the hydraulic fluid (HF) in such a way that the pressure-limiting valve unit (6, 24) adjusts the limit pressure (p30, p31/32) of the portion (30, 31, 32) of the hydraulic circuit (101).