Adjustable Hydraulic Damper for Electrical Switching Apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hydraulic dampers require time-consuming and costly manual adjustments to achieve desired mechanical characteristics for specific applications, as the initial dampening force depends on variables like fluid viscosity, piston dimensions, and gap between the piston and the inner wall, which are difficult to adjust without significant overhaul.
Innovation Solution
A hydraulic damper with a tapered chamber and an adjustable piston, where the piston's initial position can be adjusted longitudinally using a threaded engagement with a press rod, allowing for continuous gradual adjustment of the gap between the piston and the inner wall, thereby modifying the dampening force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual adjustment of damper arrangements is performed to achieve desired mechanical characteristics, then the dampening force can be optimized for specific applications, but the process becomes time-consuming and costly
Solution Approach 1:
The piston position is made adjustable along the longitudinal axis of the chamber, allowing dynamic modification of the gap between the piston and inner wall. This enables the dampening characteristics to be adapted to different applications without manual intervention or disassembly, resolving the contradiction between optimization reliability and adjustment time
Solution Approach 2:
The gap dimension between the piston and chamber wall is changed as an adjustable parameter. By varying this geometric parameter along the longitudinal direction, the dampening force can be optimized for different applications while eliminating time-consuming manual adjustments
2Reliability
If manual adjustment of damper arrangements is performed to achieve desired mechanical characteristics, then the dampening force can be optimized for specific applications, but the process becomes costly
Solution Approach 1:
A single damper design with adjustable piston position serves multiple applications by modifying the gap dimension. This universal design eliminates the need for multiple specialized dampers or costly manual adjustments, achieving application-specific optimization economically
Solution Approach 2:
The adjustable gap parameter allows one damper unit to provide optimized performance across multiple applications. This eliminates the need for costly manual adjustments or custom manufacturing for each application, improving ease of manufacture while maintaining reliability
3Device complexity
If piston position is fixed, then the damper structure is simple, but the dampening force cannot be adjusted for different applications
Solution Approach 1:
The piston is designed with adjustable position along the longitudinal axis, transforming the fixed structure into a dynamic one. This simple adjustment mechanism provides application adaptability without significantly increasing device complexity
Solution Approach 2:
The gap dimension parameter is made variable along the longitudinal direction. This single parameter change enables the damper to adapt to different applications while maintaining structural simplicity through a straightforward adjustment mechanism
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
Enables efficient and cost-effective adjustment of the dampening force by allowing continuous, gradual adjustment of the piston position and gap, aligning with specific application requirements without the need for extensive reconfiguration.
Implementation Method 1
a dampening force that is dependent on several variables, including fluid viscosity, piston length, piston diameter, a gap between the piston and the inner wall of the chamber, and piston velocity
Data Source
AI summary
A hydraulic damper for an electrical switching apparatus includes a damper enclosure including an inner wall. Also included is a chamber defined by the inner wall, the chamber having a first end, a second end. Further included is a tapered portion of the chamber extending from a tapered portion initial end to a tapered portion terminal end, the tapered portion angled inwardly in a direction from the first end toward the second end of the chamber. Yet further included is a press rod at least partially disposed within the chamber. Also included is a piston having a piston outer surface and disposed within the chamber and having an initial position adjustable in a longitudinal direction of the chamber. Further included is a gap defined by the piston outer surface and the inner wall, wherein adjustment of the piston in the longitudinal direction adjusts the gap.