Hydraulic Actuator Manual Override via Hand Pump
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Solution Overview
Problem
Conventional hydraulic actuator systems for valves require a separate power source and cannot operate manually, especially when power is cut off, limiting the ability to adjust flow rates.
Innovation Solution
A hydraulic actuator apparatus with a hand pump system that allows manual operation of the valve by pumping, and optional connection to a hydraulic power pack for automatic operation, featuring a direction converting valve, pilot check valves, and relief valves to manage fluid pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a hydraulic power pack is used to operate the hydraulic actuator, then the valve can be automatically opened and closed, but the system cannot be operated manually when power is cut off and requires a separate power supplying device
Solution Approach 1:
The hydraulic actuator system is designed to accept multiple types of power sources. The actuator can be driven by either a hydraulic power pack (for automatic operation) or a hand pump (for manual operation). This multi-functionality ensures that the valve can be operated in both automated and manual modes, eliminating the limitation of being unable to operate when power is cut off.
2Extent of automation
If a hydraulic power pack is used to operate the hydraulic actuator, then the valve can be automatically opened and closed, but a separate power supplying device should be provided
Solution Approach 1:
The hydraulic actuator is designed with universal compatibility for different power sources. The same actuator mechanism can be driven by either a hydraulic power pack or a hand pump, eliminating the need for separate actuators for automatic and manual operations. This reduces the overall number of components required in the system.
Solution Approach 2:
The hydraulic actuator serves as an intermediary device that can receive hydraulic fluid from different sources (power pack or hand pump) and convert it into mechanical motion to operate the valve. This intermediary approach allows a single actuator to handle both automatic and manual operation modes without requiring separate power supplying devices for each mode.
3Reliability
If manual operation is implemented using a hand pump, then the valve can be operated without power, but the system requires additional manual pumping operations
Solution Approach 1:
The system uses hydraulic principles to transmit force from the hand pump through hydraulic fluid to the actuator. This allows manual operation to be performed with relatively simple pumping actions, as the hydraulic fluid efficiently transmits the applied force to move the valve. The hydraulic mechanism amplifies the manual input force, making the operation simpler than direct mechanical linkage would provide.
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 manual operation of valves and adjustment of flow rates even without power, while allowing automatic operation with a hydraulic power pack, ensuring continuous control over fluid flow.
Implementation Method 1
a hand pump, and a first pump port which is connected with an outlet part of the hand pump
Implementation Method 2
a direction converting valve which is disposed between the first and second pump ports and the first and second direction ports, and functions to connect the first pump port with one of the first and second direction ports and connect the second pump port with the rest of them so as to convert a flowing path of the operating fluid
Implementation Method 3
a first actuator side pilot check valve which is disposed between the first direction port and the first actuator port
Data Source
AI summary
The present invention relates to an apparatus operating a hydraulic actuator for valve, which can manually operate the hydraulic actuator for opening and closing the valve by which a flow rate is adjusted. According to the present invention, by manually operating the hydraulic actuator for opening and closing the valve, there is an advantage of manually opening and closing the valve and thus easily adjusting a flow rate of fluid flowing in a pipe, even when power is cut off. Further, according to the present invention, the hydraulic actuator for opening and closing the valve can be selectively connected with a hydraulic power pack so as to automatically open and close the valve using the hydraulic power pack according to a user's selection, or which can manually open and close the valve.