Rotary Disconnecting Switch with Dual Energy Storage Tripping
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Solution Overview
Problem
Existing rotary disconnecting switches have complex structures and poor stability due to direct energy release from delayed energy storage mechanisms, affecting reliability and manual operation.
Innovation Solution
A remotely-controlled rotary disconnecting switch with a dual energy storage mechanism, comprising a real-time and delayed energy storage system, allowing remote tripping and manual operation without interference, using a locking mechanism to maintain energy storage state and enable seamless transitions between open and closed states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the delayed energy storage mechanism releases energy directly to drive the disconnecting switch open, then the remote tripping function is achieved, but the structure becomes complex and stability deteriorates
Solution Approach 1:
The patent introduces an operating shaft as an intermediary component between the delayed energy storage mechanism and the real-time energy storage mechanism. The delayed mechanism drives the operating shaft, which then drives the real-time mechanism to open the switch. This intermediary structure simplifies the overall design by separating the delayed tripping function from the immediate switching action, avoiding direct coupling and reducing structural complexity.
Solution Approach 2:
The patent divides the energy storage and release process into two independent segments: a delayed energy storage mechanism and a real-time energy storage mechanism. Each mechanism has its own energy storage spring and drive path. The delayed mechanism stores energy during normal operation and releases it only when tripping is required, while the real-time mechanism handles the immediate switching action. This segmentation allows each mechanism to be optimized independently, reducing overall complexity.
2Extent of automation
If the delayed energy storage mechanism is directly coupled with the operating shaft, then remote tripping is enabled, but manual operation stability is affected
Solution Approach 1:
The operating shaft serves as a mediator that decouples the delayed energy storage mechanism from the direct drive path to the switch contacts. When manual operation is performed, the operator turns the operating shaft, which independently drives the real-time energy storage mechanism without being influenced by the delayed mechanism's energy storage state. This intermediary arrangement ensures that manual operations remain stable and predictable regardless of the delayed mechanism's state.
Solution Approach 2:
The delayed energy storage mechanism performs preliminary energy storage during normal operation without interfering with manual control. The energy is stored in advance in a separate pathway, ready for remote tripping, while the manual operation pathway remains independent and stable. This preliminary action allows the system to prepare for automatic tripping without compromising manual operation reliability.
3Reliability
If a locking mechanism is added to maintain energy storage state, then remote tripping reliability is improved, but device complexity increases
Solution Approach 1:
The locking mechanism acts as an intermediary control element that manages the energy storage state without adding significant complexity. It includes a locking component that engages with a limiting groove on the operating shaft to maintain the energy storage position, and a tripping component that can release the lock when tripping is required. This simple locking arrangement ensures reliable energy storage maintenance while adding minimal structural complexity.
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
Improves reliability and stability by allowing remote tripping without affecting manual operations, reducing structural complexity and enhancing assembly and installation convenience.
Implementation Method 1
the delayed energy storage mechanism comprises a turntable and a first energy storage spring; the turntable is driven by the operating shaft to rotate from an energy-release position to an energy-storage position, such that the first energy storage spring stores energy
Implementation Method 2
the real-time energy storage mechanism comprises a second energy storage spring, a sliding frame, a rotating frame, an output shaft and a housing base; the operating shaft drives the rotating frame to rotate, such that the second energy storage spring stores energy
Data Source
AI summary
A remotely-controlled rotary disconnecting switch that includes an operating device and a switch body, which includes at least one switch unit. Each switch unit includes a moving contact assembly and a static contact. The operating device drives the moving contact assembly to rotate to be connected to or disconnected from the static contact to connect or disconnect. The operating device includes an operating shaft, a real-time energy storage mechanism, a delayed energy storage mechanism, a locking mechanism with a locking fastener and a tripping mechanism with a trip that actuates to drive the locking fastener to be unlocked from the delayed energy storage mechanism, the delayed energy storage mechanism releases energy to drive the operating shaft to rotate to an opening position, and then the operating shaft drives the real-time operation mechanism to drive the remotely-controlled rotary disconnecting switch to be switched to an opened state.