Hydraulic Emergency Valve Drive with Magnetic Locking
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Solution Overview
Problem
Existing hydraulic drives with emergency closing functions are complex due to the mechanical release mechanism required for the emergency spring, which complicates the device technology and increases the outlay for the moving parts.
Innovation Solution
A drive with a movable coupling device that includes an emergency spring clamped between a drive-side and an output-side spring system, where the emergency spring moves with the coupling device, and a locking device actuated hydraulically or pneumatically to simplify the device technology, allowing the emergency spring to relax and close the valve during an emergency function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical release mechanism is used for the emergency spring, then the emergency closing function can be achieved, but the device complexity and outlay for moving parts increases
Solution Approach 1:
The patent replaces the mechanical release mechanism with a magnetic field-based locking device. The locking device uses a magnet to hold the emergency spring in a tensioned state during normal operation, and can be actuated by overcoming the magnetic force (e.g., by inserting a ferromagnetic object or using an electromagnet) to release the spring for emergency closing. This substitution eliminates complex mechanical moving parts while maintaining the emergency closing function.
Solution Approach 2:
The patent employs a hydraulic or pneumatic actuator to overcome the magnetic force of the locking device and release the emergency spring. The actuator uses fluid pressure to generate the necessary force to displace the ferromagnetic object or activate the electromagnet, thereby triggering the emergency closing function. This approach provides a simple yet effective means of actuation without requiring complex mechanical linkages.
2Ease of operation
If the locking device holds the emergency spring tensioned, then the valve can be adjusted during normal operation, but the spring must be released for emergency closing which requires a release mechanism
Solution Approach 1:
The patent replaces the mechanical release mechanism with a magnetic field-based locking device. The locking device uses a magnet to hold the emergency spring in a tensioned state during normal operation, allowing valve adjustment. For emergency closing, the magnetic force is overcome (by inserting a ferromagnetic object or using an electromagnet) to release the spring, providing a simple actuation method without complex mechanical linkages.
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 solution reduces the complexity of the device for moving parts, enabling a simple and effective emergency closing function while maintaining the ability to safely transmit translational movements to the valve body without the pistons moving apart, ensuring reliable valve operation.
Implementation Method 1
The drive has a movable coupling device which has an emergency spring clamped between a drive-side and an output-side spring system
Implementation Method 2
the emergency spring being a compression spring that moves along with the coupling device
Implementation Method 3
the locking device is actuated or triggered hydraulically or pneumatically
Implementation Method 4
the locking device is actuated or triggered hydraulically or pneumatically and / or magnetically
Implementation Method 5
A damper, which is effective during the emergency function or emergency movement at the end of the output-side movement in the closing direction, protects against impacts
Data Source
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AI summary
The invention relates to a drive having an emergency closing function, comprising a movable coupling device, which has an emergency spring clamped between an input-side and an output-side spring system. The emergency spring is preferably a compression spring moved along with the coupling device. A distance of the spring systems is defined by means of a locking device in normal operation of the drive, wherein the emergency spring can relax for an emergency function or emergency movement of the drive after the locking device is released or unlocked. According to the invention, the locking device is operated or can be triggered hydraulically or pneumatically and/or magnetically.