Diaphragm Pump Hydraulic Fluid Control System
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Solution Overview
Problem
Hydraulic diaphragm pumps face inefficiencies and premature failure due to changes in hydraulic fluid volume caused by leaks or losses, leading to excessive expansion or stretching of the diaphragm, which results in reduced pump efficiency and wear.
Innovation Solution
A hydraulic fluid control system that includes differential pressure sensors and controllable pumps to maintain a constant hydraulic fluid volume by detecting pressure differentials and adjusting fluid levels, coupled with position sensors to control the operation of hydraulic fluid pumps, ensuring optimal diaphragm strain and preventing over-expansion or under-expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydraulic fluid volume is not controlled, then the pump structure is simple, but the diaphragm experiences excessive expansion and stretching leading to premature failure
Solution Approach 1:
The patent implements a feedback control system where a sensor detects the actual hydraulic fluid volume in the chamber and compares it to a desired setpoint. Based on this feedback, a controller adjusts the hydraulic fluid pump operation to maintain optimal fluid volume, preventing diaphragm over-expansion and extending its lifespan.
Solution Approach 2:
The control system automatically monitors and adjusts hydraulic fluid volume without external intervention. The sensor continuously detects fluid volume changes due to leaks or losses, and the controller autonomously activates the hydraulic fluid pump to replenish fluid, making the system self-regulating and eliminating the need for manual maintenance.
2Productivity
If hydraulic fluid volume changes due to leaks, then the pump structure remains simple, but pump efficiency is reduced
Solution Approach 1:
The feedback control mechanism continuously monitors hydraulic fluid volume and adjusts the hydraulic fluid pump operation in real-time to maintain optimal fluid levels, ensuring consistent diaphragm performance and maximizing pump efficiency despite potential leaks or losses.
Solution Approach 2:
The control system proactively detects and corrects hydraulic fluid volume deficiencies before they can significantly impact pump performance. By continuously monitoring and preemptively replenishing fluid, the system prevents efficiency degradation rather than reacting after problems occur.
3Strength
If hydraulic fluid volume is not maintained, then the system is simpler to operate, but diaphragm wear increases
Solution Approach 1:
The hydraulic fluid control system operates autonomously, with sensors and controllers automatically monitoring and adjusting fluid volume without requiring user intervention. This self-service capability maintains optimal diaphragm conditions while keeping the system simple to operate, as no manual maintenance is needed.
Solution Approach 2:
The feedback mechanism continuously monitors hydraulic fluid volume and automatically adjusts the system to maintain optimal conditions for diaphragm durability, eliminating the need for operator knowledge or intervention while protecting against excessive diaphragm wear.
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 system maintains a stable hydraulic fluid volume, reducing diaphragm strain and wear, thereby enhancing pump efficiency and extending the lifespan of the diaphragm by preventing excessive expansion or contraction.
Implementation Method 1
a sensor means for detecting a pressure differential between the process fluid and the hydraulic fluid
Implementation Method 2
a powered hydraulic fluid displacement mechanism that displaces hydraulic fluid into and out of the hydraulic fluid chamber surrounding the hydraulic diaphragm
Implementation Method 3
a deformable diaphragm fluidly connected to a hydraulic fluid chamber... to constrict (effectively decreasing the internal volume of the diaphragm) and expand (effectively increasing the internal volume of the diaphragm)
Data Source
Figure 1
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Figure 4~5
AI summary
A hydraulic fluid control system for a hydraulic diaphragm pump including at least one hydraulic diaphragm containing a process fluid surrounded by at least one hydraulic fluid chamber containing a hydraulic fluid is provided. The system includes a differential pressure sensor operable to detect and measure a pressure difference between the process fluid contained in the at least one hydraulic diaphragm and the hydraulic fluid contained in the at least one hydraulic fluid chamber; a hydraulic fluid reservoir containing hydraulic fluid; and a hydraulic fluid pump fiuidly connected to the hydraulic fluid reservoir and the at least one hydraulic fluid chamber, and operable to provide a volume of hydraulic fluid to the at least one hydraulic fluid chamber in response to the pressure difference measured by the differential pressure sensor. The system is optionally operable to withdraw a volume of hydraulic fluid from the hydraulic fluid chamber.