Pressure Compensator Circuit for Oleodynamic Pressure Measurement
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Solution Overview
Problem
Conventional pressure gauges face challenges when connected to oleodynamic cylinders due to high operating pressures, requiring protection and precise pressure value display, which existing solutions fail to address effectively.
Innovation Solution
A pressure compensator circuit with two cylinders and a spider assembly, featuring a compensator cylinder and a reducing cylinder with a coupling joint, allows for accurate pressure measurement by maintaining a proportional pressure ratio, ensuring safe and reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional pressure gauge is connected directly to an oleodynamic cylinder with high operating pressures, then the pressure gauge can measure pressure, but the pressure gauge is exposed to high pressures causing safety risks and potential damage
Solution Approach 1:
The patent introduces a compensator cylinder as an intermediary device between the oleodynamic cylinder and the pressure gauge. This compensator cylinder is pre-filled with oil and acts as a buffer, allowing the pressure gauge to measure pressure indirectly without being directly exposed to the high operating pressures of the main oleodynamic system, thereby ensuring safety and reliability
2Reliability
If a pressure compensating membrane and safety valve are added to protect the pressure gauge, then the pressure gauge is protected from high pressures, but the device complexity increases
Solution Approach 1:
The patent combines the compensator cylinder with the existing oleodynamic cylinder structure, merging the protection function into the main system rather than adding separate safety valve and membrane components. The compensator cylinder integrates both the pressure measurement function and the pressure protection function in a unified structure, reducing overall device complexity
3Measurement precision
If a pressure compensator is designed to display precise pressure values on the pressure gauge, then measurement accuracy is improved, but the structural features become more complex
Solution Approach 1:
The compensator cylinder is pre-filled with oil that replicates the pressure characteristics of the main oleodynamic system. By copying the pressure behavior through the pre-filled oil in the compensator cylinder, the system achieves accurate pressure measurement without requiring complex calculation or conversion mechanisms, maintaining simplicity while ensuring precision
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 solution enables precise and proportional pressure value display on the pressure gauge, ensuring accurate measurement across varying operating pressures, enhancing reliability and safety.
Implementation Method 1
a first piston (21) slidingly engaged in a compensator cylinder (2), said first piston comprising a first piston rod (4), and a second piston (31) slidingly engaged in a reducing cylinder (3), said second piston comprising a second piston rod (5)
Data Source
Figure 1~2
AI summary
A pressure compensator, particularly for oleodynamic applications, comprising two cylinders: a compensator cylinder (2) in which is slidingly engaged a first piston (21) comprising a first piston rod, and a reducing cylinder (3), in which is slidingly engaged a second piston (31) comprising a second piston rod axially connected to the first piston rod; said compensator cylinder being coupled to a main oleodynamic cylinder; said compensator cylinder having a size so designed as to provide the same area ratio as that of the main cylinder, thereby to a set position of said main cylinder piston corresponding a precise position of the first piston of the compensator cylinder; said reducing cylinder comprising at least a low-pressure chamber (32) coupled to a pressure gauge; a displacement of the reducing cylinder piston rod either increases or decreases a pressure in said low-pressure chamber, proportionately to a working pressure in the main cylinder.