Bidirectional Self-Locking Damper for High-Force Wind Load Control
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Solution Overview
Problem
Existing dampers for solar photovoltaic panel modules fail to generate sufficient damping force under large external loads, leading to excessive shaking during strong winds, which compromises the stability and safety of the system.
Innovation Solution
A bidirectional self-locking damper is designed with a piston assembly and a bidirectional self-locking valve that includes a locking assembly and elastic compensation units, allowing for increased damping force by controlling the flow of a work medium through specific passage channels and chambers, and maintaining communication between chambers to enhance damping effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional damper structure is used, then the device complexity is low, but the damping force is insufficient under large external loads
Solution Approach 1:
The valve assembly is segmented into multiple independent components including a valve body, valve core, elastic compensation units, and passage channels. This segmentation allows each component to perform its specific function while collectively achieving the bidirectional self-locking capability and high damping force generation.
Solution Approach 2:
The damper employs dynamic valve core displacement controlled by elastic compensation units that respond to pressure differential changes. The valve core automatically shifts position based on the balance between elastic forces and pressure forces, enabling dynamic adjustment of damping force to match external load conditions.
2Stability of the object's composition
If the damping force is increased to limit displacement under strong wind, then the stability improves, but the device complexity increases due to bidirectional self-locking mechanism
Solution Approach 1:
The bidirectional self-locking mechanism is entirely automatic and self-regulating. The elastic compensation units store potential energy that automatically actuates the valve core when pressure differentials exceed threshold values, eliminating the need for external control systems or additional actuators while achieving stable panel module positioning.
Solution Approach 2:
The damper utilizes hydraulic principles where the work medium (hydraulic fluid) transmits force through passage channels to the valve core. Pressure differentials generated by external loads on the piston are converted into mechanical displacement of the valve core, enabling forceful locking action without complex mechanical linkages.
3Force
If the valve core displacement is large to interrupt communication between chambers, then the damping force increases, but the response time increases
Solution Approach 1:
The elastic compensation units are pre-loaded with elastic potential energy that is stored and ready for immediate release. When pressure differentials exceed the elastic force threshold, the pre-stored energy enables rapid valve core displacement and immediate interruption of passage channel communication, achieving fast response without requiring large displacement distances.
4Force
If the passage channels are blocked to generate high damping force, then the external load limitation improves, but the energy dissipation increases
Solution Approach 1:
The damper operates in periodic cycles of valve core displacement and return. The elastic compensation units continuously store and release energy, creating periodic opening and closing of the passage channels. This periodic action allows the system to dissipate energy through repeated small-displacement locking events rather than continuous large-displacement blocking, reducing overall energy loss.
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 damper generates a significant damping force to limit external load displacement, reducing shaking and extending the service life by maintaining communication between chambers and utilizing elastic compensation to manage load changes effectively.
Implementation Method 1
the work medium during the flowing passes the first passage channel and the second passage channel so as to realize a first retardation
Implementation Method 2
the work medium enters the passage chamber, it drives the locking assembly arranged in the passage chamber to interrupt the communication
Implementation Method 3
an elastic compensation unit that is distributed on both sides of the main body to force the spool unit always to have a movement trend of resetting movement
Data Source
AI summary
The present application discloses a bidirectional self-locking damper that comprises a cylinder and a piston assembly housed in the cylinder and displaceable along the axial direction of the cylinder. The piston assembly includes a piston rod, a piston and a bidirectional self-locking valve. The bidirectional self-locking valve includes a valve body and a locking assembly. The valve body is provided with a passage chamber, and a first passage channel and a second passage channel that are communicated with the passage chamber, the first passage channel communicating with a recovery pressure chamber, the second passage channel communicating with a compression pressure chamber; the locking assembly is directed to displace in the passage chamber driven by the work medium for establishing/interrupting the communication between the first or second passage channel and the passage chamber.