Control Valve Sealing Layout for Multi-Path Flow and Easier Manufacturing
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Solution Overview
Problem
Existing control valves with multiple flow paths face challenges in arranging flow channels and sealing members to effectively control fluid flow while reducing manufacturing complexity and cost.
Innovation Solution
A control valve design featuring a valve body with side wall parts that include first communication ports arranged along both the height and circumferential directions, and a sealing member with through holes corresponding to these ports, reducing the arc length of the sealing member's arc surface to simplify manufacturing and improve sealing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple flow channels are arranged in the control valve to control multiple flow paths, then the fluid control capability is improved, but the manufacturing difficulty of the sealing member increases
Solution Approach 1:
The sealing member is divided into a sealing body and a balance sealing block, with each part having specific sealing functions. The sealing body seals the communication ports while the balance sealing block balances pressure, simplifying the manufacturing of each component while maintaining multi-path control capability
Solution Approach 2:
The first communication ports are arranged in two columns along the circumferential direction of the side wall part, creating a two-dimensional port layout. This dimensional arrangement reduces the arc length of the sealing member's arc surface compared to a single-column arrangement, simplifying manufacturing while maintaining multi-path fluid control
2Ease of manufacture
If the arc length of the sealing member's arc surface is reduced to simplify manufacturing, then the manufacturing cost is reduced, but the sealing performance may be compromised
Solution Approach 1:
The sealing function is segmented between the sealing body and balance sealing block. The sealing body provides the primary sealing interface with the reduced arc surface, while the balance sealing block compensates for pressure imbalances, ensuring sealing performance is maintained even with reduced arc length
Solution Approach 2:
The central angle of the sealing member's arc surface is optimized within a specific range (greater than 100 degrees and less than or equal to 180 degrees). This parameter optimization maintains adequate sealing contact while reducing arc length and manufacturing complexity compared to larger angles
3Area of stationary object
If the first communication ports are arranged along both height and circumferential directions, then the area of side wall part needing sealing is reduced, but the arrangement complexity increases
Solution Approach 1:
The communication ports are arranged in a two-dimensional grid pattern with two columns along the circumferential direction and multiple rows along the height direction. This two-column arrangement reduces the total arc length of the sealing member compared to a single-column layout, decreasing the sealing area while the systematic grid arrangement keeps design complexity manageable
Data Source
AI summary
A control valve, includes a valve body, a valve core, and a sealing component. The control valve includes communication ports; the communication ports are communicated with a valve cavity (101); the communication ports comprise first communication ports; the first communication ports are arranged along the height direction of a side wall portion and the circumferential direction of the side wall portion; two first communication ports is arranged on the side wall portion along the circumferential direction of the side wall portion; the sealing component includes a sealing body portion; the sealing body portion is located between the valve core (20) and the side wall portion; the sealing body portion has through holes.