Valve Control Device for Rapid Cooling Flow Maximization
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Solution Overview
Problem
Conventional cooling water flow rate control devices take a long time to maximize the flow rate during cooling failures, such as overheating, resulting in inadequate cooling performance.
Innovation Solution
A control device that calculates and adjusts the control angle of a valve to rapidly expand the opening area of the valve by determining the change direction and drive force based on the current control angle and expansion instructions, ensuring quick maximization of the flow rate during cooling failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional flow control valve is used to change cooling water flow rate from small to maximum, then the valve can achieve the required flow rate range, but it takes a long time to maximize the flow rate during cooling failures
Solution Approach 1:
The patent applies dynamics by making the valve movable range dynamic rather than fixed. The valve can operate in a small movable range during normal conditions and switch to a large movable range when rapid flow rate maximization is needed. This is achieved through the control device that determines the movable range based on current flow rate requirements and failure conditions, allowing the valve to rapidly open when cooling failure occurs.
Solution Approach 2:
The patent changes the parameter of valve movable range from a fixed value to a variable parameter. The control device adjusts the movable range parameter based on operating conditions - using a small range during normal operation for precision control and a large range during cooling failures for rapid response. This parameter change enables the system to achieve both precise control and fast response times.
2Reliability
If the valve movable range is large to maximize flow rate quickly, then cooling performance improves during failures, but control precision may be reduced during normal operation
Solution Approach 1:
The patent uses dynamics to make the valve movable range adaptive. During normal operation, the valve operates in a small movable range for precise flow rate control. When cooling failure is detected, the control device switches to a large movable range to rapidly maximize flow rate. This dynamic adjustment of the movable range allows the system to maintain control precision when needed and achieve rapid response when critical.
Solution Approach 2:
The patent segments the valve movable range into different operational zones - a small range for normal precision control and a large range for emergency flow maximization. The control device selectively activates the appropriate range based on system conditions, effectively dividing the control strategy into normal operation mode and failure response mode to optimize both precision and reliability.
Data Source
AI summary
A control device is a device for controlling a control angle of a valve which has a minimum value in a change in opening area in accordance with the control angle, and includes a control angle instruction acquisition unit configured to acquire a control angle instruction of the valve, an expansion instruction acquisition unit configured to acquire an expansion instruction indicating whether to expand the opening area, a control angle information acquisition unit configured to acquire control angle information indicating a control angle of the valve, a control angle calculation unit configured to calculate a control angle of the valve on the basis of the control angle instruction acquired by the control angle instruction acquisition unit, the expansion instruction acquired by the expansion instruction acquisition unit, and the control angle information acquired by the control angle information acquisition unit, and a drive control unit configured to output drive information of the valve based on a control angle calculated by the control angle calculation unit.