Balanced Valve Element Fixing Member Integration
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Solution Overview
Problem
Existing balanced valve elements are complex in structure, leading to higher costs and difficulties in guiding and sealing, particularly due to the need for additional components like guide sleeves and complex arrangements to isolate inlet and outlet pressures effectively.
Innovation Solution
A balanced valve element design featuring a valve rod, a piston sleeve, and a fixing member arranged in parallel with the valve rod axis, with a guide sleeve optionally surrounding the valve rod, simplifies the structure by integrating the fixing member with the actuator and diaphragm cap, reducing the number of parts and eliminating the need for additional space for guide sleeves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixing member is used to fix the n-shaped diaphragm on the valve rod, then the diaphragm is securely fixed, but the structure becomes complex and the number of parts increases
Solution Approach 1:
The fixing member is integrated with the actuator through fixed connection or integral molding, merging two previously separate components into one unified structure. This reduces the total number of parts while maintaining the fixing function, directly resolving the contradiction between secure fixing and structural complexity.
2Ease of operation
If a guide sleeve is added to guide the valve rod, then guiding is achieved, but additional longitudinal space is required and the structure becomes more complex
Solution Approach 1:
The guide sleeve is integrated with the second diaphragm cap through fixed connection or integral molding, combining two separate components into one. This eliminates the need for additional longitudinal space while maintaining the guiding function, resolving the contradiction between achieving guiding and avoiding structural complexity.
3Reliability
If multiple components are used to isolate inlet pressure from outlet pressure, then sealing is achieved, but the number of parts increases and cost rises
Solution Approach 1:
The piston sleeve is integrated with the valve rod through fixed connection or integral molding, merging two components into one unified structure. This reduces the number of parts required for pressure isolation while maintaining sealing effectiveness, directly addressing the contradiction between sealing performance and part quantity.
Solution Approach 2:
The integrated piston sleeve structure performs multiple functions simultaneously: it provides sealing between inlet and outlet pressures, guides the valve rod movement, and eliminates the need for separate fixing members. This multi-functionality reduces overall component count while maintaining reliability.
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 achieves effective guiding and sealing of the valve rod while reducing the complexity and cost of the pressure regulating valve, ensuring stable outlet pressure by isolating inlet from outlet pressure with fewer components and no additional longitudinal space requirements.
Implementation Method 1
a first sealing part is arranged between the fixing member and the sleeve body of the piston sleeve
Data Source
Figure 1
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AI summary
The present invention relates to a balanced valve element and a pressure regulating valve comprising the balanced valve element. The balanced valve element comprises: a valve rod (11); a piston sleeve (12) fixed on the valve rod (11); and a fixing member (14) sleeved between the valve rod (11) and the piston sleeve (12), the fixing member (14) being arranged in a direction in parallel with an axis of the valve rod (11). By connecting the fixing member (14) onto an actuator of the valve and arranging the fixing member (14) between the valve rod (11) and the piston sleeve (12) in the axis direction of the valve rod (11), an effect of guiding the valve rod (11) is achieved and simultaneously a sealing effect of isolating inlet (21) pressure from outlet (22) pressure is achieved.