Stainless Steel Stop Valve Assembly for Stable Fluid Flow
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Solution Overview
Problem
Existing stop valves experience unstable fluid flow, high machining complexity, and elevated costs due to complex structures and the use of brass materials.
Innovation Solution
A stop valve design featuring a valve tube with a buffer chamber, a sleeve ring, and a valve core made of stainless steel, along with a machining and assembly method that includes flanging, cold upsetting, cutting, and brazing, to facilitate stable fluid flow and reduce production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a complex overall structure of the valve body is used, then the valve port can be opened or closed, but it is difficult to implement actual machining and assembly, resulting in increased machining cost
Solution Approach 1:
The valve body is divided into a first valve body portion and a second valve body portion that are separately machined and then assembled together. This segmentation allows each portion to be manufactured independently using simpler machining processes, avoiding the need to machine a complex integrated structure as a single piece.
Solution Approach 2:
A connecting structure is introduced as an intermediary element to join the first and second valve body portions. This connecting structure facilitates assembly and enables the two separate portions to work together to form the complete valve body, simplifying both machining and assembly operations.
2Ease of manufacture
If brass material is used for the valve body and valve core, then the valve can function properly, but the cost of material is relatively high
Solution Approach 1:
The material parameter is changed from brass to stainless steel for the valve body and valve core. This substitution maintains the functional requirements of the valve while significantly reducing material cost, as stainless steel is more economically viable for this application.
3Reliability
If the valve core moves up and down to open or close the valve port, then the valve can control fluid flow, but the fluid enters with large kinetic energy, resulting in unstable flow
Solution Approach 1:
A buffer chamber is introduced into the valve structure to cushion the fluid flow before it enters the valve port. This buffer chamber reduces the kinetic energy of the incoming fluid, preventing unstable flow and improving overall flow stability without requiring complex additional mechanisms.
Data Source
AI summary
A stop valve, including: a valve tube, wherein two ends thereof are respectively an operating end and a plugging end, a side wall of the valve tube is provided with a first interface and a second interface, the second interface is close to the plugging end relative to the first interface, and a space between the second interface and the plugging end in the valve tube forms a buffer chamber; a base, used for plugging an opening of the plugging end; a sleeve ring, fixed in the cavity of the valve tube, the sleeve ring is provided with a valve port; and a valve core, disposed in the cavity of the valve tube, so as to close or open the valve port; and the valve tube and the base both are made of stainless steel.