Hydraulic Torrent Control Valve Internal Indicator and Integral Spring
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Solution Overview
Problem
Hydraulic control valves face challenges such as vulnerable position indicators prone to leakage and damage, complex installation and inspection processes, difficulty in designing a spring for minimal differential pressure, and inefficient drainage systems, along with the need to minimize parts for cost and performance reasons.
Innovation Solution
The hydraulic control valve features an integral spring that weakens faster than linearly for closing, a snap seat with an O-ring to prevent rust, internal control passages for convenient cover installation, and swivelable drain hubs for adaptable drainage, along with a helical rotor-based indicator mechanism that remains inside the valve to prevent leakage and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a stem-based position indicator is used to display valve opening rate, then the indicator function is achieved, but the indicator becomes vulnerable to bending and leakage
Solution Approach 1:
The patent extracts the indicator mechanism from the traditional stem-based external indicator and relocates it entirely inside the valve body. The indicator now moves within the sealed control chamber, eliminating exposure to external elements that cause bending and sealing failures while maintaining the measurement function.
Solution Approach 2:
The indicator is nested within the control chamber and valve body structure. It moves in conjunction with the diaphragm and plug assembly but remains contained within the sealed internal environment, protected from external damage while still providing visual indication of valve position.
2Ease of manufacture
If a stainless steel ring valve seat is installed in the internal coated surface, then the valve seat function is achieved, but the coating is penetrated causing rust damage
Solution Approach 1:
The valve seat is segmented into a separate removable component rather than being integrated into the coated surface. This allows installation and replacement without penetrating or damaging the protective coating on the valve body, eliminating the source of rust while maintaining seating functionality.
Solution Approach 2:
Instead of installing the valve seat directly into the coated surface (which causes damage), the approach is inverted: the valve seat is installed in an uncoated area or on a separate component that interfaces with the coated surface without penetration, thereby preserving the coating integrity.
3Extent of automation
If significant control equipment is mounted on the valve cover, then the control function is achieved, but inspection requires dismounting all equipment
Solution Approach 1:
The valve cover and control equipment are segmented as separate removable components. This allows the control equipment to remain mounted on the cover while the cover itself can be removed for diaphragm inspection, eliminating the need to dismount control equipment during maintenance.
Solution Approach 2:
The control equipment is pre-mounted on the valve cover assembly. This preliminary arrangement allows the entire control equipment package to move with the cover, so when the cover is removed for inspection, the equipment remains attached and ready for reinstallation, saving time and effort.
4Extent of automation
If the valve cover is designed for control equipment connection, then the control function is achieved, but installation requires precise positioning for air removal
Solution Approach 1:
The valve cover and body are designed with matching alignment features and positioning elements that create an equipotential installation state. The control mouth and control chamber are pre-positioned to ensure proper orientation for air removal, eliminating the need for complex positioning during installation.
5Adaptability or versatility
If multiple parts are used in the valve design, then the functional requirements are met, but the design and manufacturing complexity increases
Solution Approach 1:
The patent merges multiple components into integrated assemblies: the control chamber is integrated with the valve body, the indicator is integrated with the diaphragm assembly, and the valve seat is integrated with the plug. This reduces the total number of separate parts while maintaining all necessary functions, simplifying design, manufacturing, and assembly.
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
This design enhances the reliability and ease of use by reducing leakage, simplifying inspection and installation, and optimizing drainage, while minimizing parts for cost-effectiveness and improved performance.
Implementation Method 1
an integral spring that weakens faster than linearly in relation to a displacement of the diaphragm and plug unit
Implementation Method 2
a snap seat sealed with an O-ring
Data Source
Figure 1~1aa
Figure 1a1~1a2
Figure 2~2a
AI summary
A hydraulic control valve actuated by a diaphragm's integral spring whose thicker part acts with greater force to close the diaphragm and plug unit of the valve and whose thinner part may complete the closing motion so that the integral spring may weaken faster than linearly in relation to displacement of the diaphragm and plug unit. A snap seat supporting the plug may include a seat portion and a grip skirt portion integrally joined at an acute angle. A bracket and sliding guide may guide a helical rotor touching an indicator. Movement of the diaphragm and plug unit may rotate the helical rotor and the indicator without the indicator rising out of the valve. The cover may have an internal control passage in communication with a base of the valve to allow the cover to be installed horizontally and vertically conveniently and without disconnecting the control tubing above the valve.