Self-variable force hydraulic damper
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Solution Overview
Problem
Current hydraulic dampers in solar photovoltaic power generation systems are inadequate in buffering wind shocks from high winds, as they cannot effectively manage the increased force and pressure.
Innovation Solution
A self-variable force hydraulic damper is designed with a piston assembly and disc springs that adjust damping force based on wind pressure, featuring variable displacement pistons, valve plates, and flow holes to enhance buffering capacity, particularly through the deformation of disc springs and optimized hydraulic oil flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional hydraulic damper is used, then the structure is simple and easy to manufacture, but the damping force is insufficient for high winds of force nine and above
Solution Approach 1:
The patent implements a self-adjusting damping mechanism where the damping force dynamically changes with wind pressure. The piston assembly with variable displacement piston and disc springs automatically adjusts the damping force based on the applied load, transitioning from a static damping system to a dynamic one that adapts to varying wind conditions.
Solution Approach 2:
The damper is divided into multiple functional components including piston assembly, valve plates with flow holes, disc springs, and hydraulic chambers. This segmentation allows each component to perform a specific function while collectively providing the enhanced variable damping capability needed for high wind resistance.
2Force
If the damping force is increased to buffer high winds, then the wind shock buffering ability is improved, but the hydraulic oil flow resistance increases
Solution Approach 1:
The patent changes the flow parameters of hydraulic oil by providing multiple flow holes with different diameters and configurations in the valve plates. This allows the system to optimize the balance between damping force generation and hydraulic oil flow resistance, enabling effective high wind buffering while maintaining reasonable energy efficiency.
3Adaptability or versatility
If a single damping force setting is used, then the device is simple to manufacture, but it cannot adapt to varying wind conditions from calm to high winds
Solution Approach 1:
The damper employs a self-adjusting mechanism where the piston assembly, disc springs, and valve plates work together to automatically adapt the damping force to varying wind conditions without external control. The system serves itself by using the applied wind load to trigger the appropriate damping response.
Solution Approach 2:
The damping mechanism transitions from a static, fixed-force design to a dynamic, variable-force system that automatically adjusts its damping characteristics based on the real-time wind conditions, enabling adaptability across different operational scenarios.
4Speed
If the piston rod moves quickly during strong winds, then the wind shock buffering response is faster, but the hydraulic oil circulation stability decreases
Solution Approach 1:
The patent optimizes the hydraulic oil flow parameters by configuring multiple flow holes with specific diameter ratios and arrangements in the valve plates. This allows the system to maintain stable hydraulic oil circulation even during rapid piston rod movement, balancing speed response with circulation stability.
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 self-variable force hydraulic damper significantly improves wind shock buffering by increasing damping force during high winds, ensuring stable and efficient hydraulic oil circulation, and reducing the risk of internal failure through uniform hydraulic pressure and structural design.
Implementation Method 1
the first disc spring and the second disc spring will be deformed, causing a damping force of the above-mentioned self-variable force hydraulic damper increases
Implementation Method 2
the first valve plate or the second valve plate under the action of the hydraulic oil will overcome the action of the pressure of the first disc spring or the second disc spring
Implementation Method 3
the variable displacement piston has a first end face and a second end face, and is further provided with a first flow hole and a second flow hole that penetrate the first end face and the second end face respectively
Implementation Method 4
the first valve plate closes the first flow hole and does not close the second flow hole; the second valve plate closes the second flow hole and does not close the first flow hole
Data Source
AI summary
A self-variable force hydraulic damper including a housing assembly, a piston rod and a piston assembly. The piston assembly is mounted on the piston rod and includes a first washer, a first disc spring, a first valve plate, a variable displacement piston, a second valve plate, a second disc spring and a second washer; the piston has a first end face and a second end face, and is further provided with a first flow hole and a second flow hole penetrating the first end face and the second end face respectively; the first valve plate is pressed against the first end face, and the first valve plate closes the first flow hole and does not close the second flow hole; the second valve plate is pressed against the second end face, and the second valve plate closes the second flow hole and does not close the first flow hole.