Adjustable Pressure Reducer Assembly With Integrated Shut-Off
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Solution Overview
Problem
Existing pressure reducer assemblies for fluid pressure reduction in irrigation systems are costly, complex, and require additional space, while also being limited in their ability to adjust fluid pressure and function as a shut-off valve.
Innovation Solution
A pressure reducer assembly with a piston rod featuring an interaction protrusion and an adjusting device that includes an actuating part and an adjusting part, allowing for manual adjustment of the maximum axial movement of the piston rod to control fluid pressure and function as a shut-off valve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a pressure reducer assembly is mounted to reduce inlet pressure, then component damage from high pressure is prevented, but additional cost and space are incurred
Solution Approach 1:
The patent combines the pressure reduction function and shut-off valve function into a single integrated assembly. The piston rod with interaction protrusion serves both to regulate pressure and to enable shut-off when engaged with the adjusting device, eliminating the need for separate pressure reducer and valve components.
Solution Approach 2:
The piston rod is designed with dual functionality: it acts as both the pressure regulation element (through axial movement controlled by spring force and outlet pressure) and the shut-off element (through interaction protrusion engagement with the adjusting device). This multi-functionality reduces overall system complexity and cost.
2Adaptability or versatility
If the pressure reducer assembly is designed to adjust maximum axial movement of the piston rod, then fluid pressure control is improved, but device complexity increases
Solution Approach 1:
The piston rod's maximum axial movement is made adjustable rather than fixed. The interaction protrusion can engage with different positions on the adjusting device's adjusting part, dynamically changing the travel limit and thus the output pressure setting. This provides adaptability without requiring a completely redesign of the basic pressure reduction mechanism.
Solution Approach 2:
The interaction protrusion acts as an intermediary element between the piston rod and the adjusting device. It translates the rotational or linear movement of the adjusting device into corresponding adjustments of the piston rod's axial movement range, providing a simple mechanical interface for pressure control.
3Ease of operation
If the pressure reducer assembly integrates shut-off function, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The shut-off function is merged with the pressure reduction function in the same assembly. By actuating the adjusting device, the interaction protrusion engages with the adjusting part to limit piston rod movement, simultaneously achieving both shut-off and pressure regulation in one operation.
Solution Approach 2:
The same piston rod and adjusting device serve dual purposes: pressure regulation through controlled axial movement and complete shut-off through engagement that prevents movement. This eliminates the need for separate valve components and simplifies operation.
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 pressure reducer assembly effectively reduces a wide range of fluid pressures, prevents component damage from high inlet pressures, and provides a cost-effective, reliable, and simple design that integrates pressure reduction and shut-off functions.
Implementation Method 1
a spring element configured to exert a force on the piston rod in a direction parallel to the direction of the central axis
Implementation Method 2
The diaphragm is exposed to the output pressure in the pressure reducer chamber into which fluid is admitted by a valve
Data Source
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AI summary
A pressure reducer assembly (100) for adjustably reducing a pressure of a fluid includes a pressure reducer body (110) defining at least a part of a pressure reducer chamber (120) along a central axis (X-X'). The pressure reducer chamber (120) includes an inlet section (122) and an outlet section (124) fluidly coupled with the inlet section (122). A biasing means piston rod (132) having a center (Y) along the central axis (X-X') connects the inlet section (122) with the outlet section (124) and is axially moveable with respect to the pressure reducer body (110). The pressure reducer assembly (100) is characterized in that the piston rod (132) includes an interaction protrusion (133). The pressure reducer assembly (100) further includes an adjusting device (140) comprising an actuating part (141, 143) and an adjusting part (142). The adjusting part (142) is configured to functionally interact with the interaction protrusion (133) such that a maximum axial movement of the piston rod (132) is adjustable by actuating the actuating part (141), particularly by manually actuating the actuating part (141).