Two-Cylinder Valve Insert for Replaceable High-Pressure Sealing
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Solution Overview
Problem
Existing valves face challenges in providing a simple construction that ensures secure mounting and replacement of valve seat gaskets, particularly at high pressures, while maintaining effective sealing and flow regulation.
Innovation Solution
A valve design featuring two axially aligned cylinders connected by a releasable screw connection, with a valve seat gasket positioned in a chamber surrounded by inner surfaces of the cylinders, allowing easy installation and replacement of the gasket, and a piston mechanism for sealing and opening the valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a traditional valve construction with integrated valve seat is used, then the structure is simple, but the valve seat gasket cannot be easily replaced or secured at high pressures
Solution Approach 1:
The valve is divided into modular components: a valve body, a separate valve insert containing the valve seat gasket, and a piston assembly. This segmentation allows the valve seat gasket to be independently replaced without replacing the entire valve, while the modular insert structure secures the gasket firmly at high pressures through precise geometric fitting and mechanical retention features
2Reliability
If a complex sealing mechanism is used to ensure secure mounting at high pressures, then sealing reliability improves, but the construction becomes complicated
Solution Approach 1:
The valve insert features localized geometric precision at the sealing interface, with specifically designed tapered surfaces, radial clearance gaps, and circumferential grooves that create effective sealing zones. These local quality enhancements ensure reliable sealing at high pressures without requiring complex mechanisms throughout the entire valve structure
3Reliability
If the valve seat gasket is firmly secured to prevent leakage, then sealing performance improves, but the gasket becomes difficult to replace
Solution Approach 1:
The valve seat gasket is integrated into a separate valve insert that can be independently removed from the valve body. This segmentation allows the gasket to be firmly secured within the insert for reliable sealing, while the entire insert assembly can be easily detached and replaced without complex disassembly procedures
Solution Approach 2:
The valve insert is pre-assembled with the valve seat gasket and retention features as a complete unit. This preliminary assembly ensures the gasket is properly positioned and secured before installation into the valve body, maintaining reliable sealing while simplifying replacement to a single-component swap operation
Data Source
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AI summary
The invention relates to a valve (10) for regulating a flow between a first and a second port (16, 18). A valve housing (12) comprises a valve chamber (14) connected to the first and second ports (16, 18). A valve insert (26) inserted within the valve chamber (14) comprises a first cylinder (28) connected to a second cylinder (32) and a piston (34) movably arranged within the second cylinder (32). The piston (35) acts against a valve seat gasket (30). The first and said second cylinders (28, 32) are arranged axially aligned and connected by a releasable connection (44). The valve seat gasket (30) is arranged in a valve seat gasket chamber (62) formed between the first and second cylinders (28, 32) and providing a ring opening (80) for engagement of the valve seat gasket (30) with the piston (34).