Adjustable Guide Track Alignment for Low-Torque Gate Valves
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Solution Overview
Problem
Gate valves in large water utility lines face increased torque and fluid leakage due to high pressures, which complicates the opening and closing of the valve and can lead to frictional resistance issues.
Innovation Solution
A guide track alignment system is introduced, featuring a guide assembly with a track and adjustment plate within the valve body's guide channel, utilizing a cured resin or adhesive to create a fluid-tight seal and reduce friction, allowing for smooth gate movement between open and closed configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a gate valve is used in large water utility lines under high pressure, then the valve can handle significant fluid pressures, but the torque required to open and close the valve increases significantly
Solution Approach 1:
The guide assembly is divided into multiple components: a guide channel formed in the valve body, a separate guide track inserted into the guide channel, and a gate. This segmentation allows the guide track to be independently optimized for low-friction movement while the valve body handles the pressure containment, resolving the contradiction between pressure handling and torque reduction.
Solution Approach 2:
The guide track acts as an intermediary element between the gate and the valve body. It provides a dedicated low-friction interface that mediates the interaction between the gate movement and the high-pressure fluid environment, enabling smooth gate operation without requiring excessive torque despite the high pressure conditions.
2Stress or pressure
If a gate valve is used in large water utility lines under high pressure, then the valve can contain significant fluid pressures, but fluid leakage occurs through the seal at the seat
Solution Approach 1:
The guide track is preliminarily positioned within the guide channel and secured with adhesive before the gate is installed. This preliminary action ensures that the gate is properly aligned and guided into the closed position, allowing the seal between the gate and seat to engage correctly and prevent fluid leakage under high pressure conditions.
Solution Approach 2:
The traditional direct-contact mechanical guidance between the gate and valve body is replaced with a low-friction guide track system. This substitution provides smoother, more consistent gate movement and positioning, ensuring reliable seal engagement at the seat without the variability and friction associated with direct mechanical guidance, thereby preventing leakage.
3Device complexity
If a fixed guide channel is used in the valve body, then the structure is simple, but the gate alignment and sealing cannot be adjusted
Solution Approach 1:
The guide system transitions from a completely fixed structure to a semi-adjustable one. The guide track can be positioned at different locations within the guide channel and secured at various heights using the adhesive method, providing dynamic adjustability for gate alignment and sealing without requiring complex mechanical adjustment mechanisms, thus maintaining structural simplicity while enabling adaptation.
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 system effectively reduces the torque required to open and close the valve, minimizes fluid leakage, and enhances the longevity of the gate and guide assembly by providing a secure, adjustable, and fluid-tight seal, even under high pressure conditions.
Implementation Method 1
utilizing a cured resin or adhesive to create a fluid-tight seal
Data Source
AI summary
A valve and a method of manufacturing the valve with an adjustable guide assembly is disclosed. The valve comprises a valve body, a gate, and a guide assembly. The valve body defines a valve port and a guide channel. The gate is configured to slide along the guide channel in the valve body between open and closed configurations. The guide assembly comprises a track and a seat. The track comprises an adjustment plate coupled to the track. The adjustment plate of the track is mounted in the guide channel to seal a portion of the gate slideably captured in the guide channel. The seat engages and seals the gate in the closed configuration.