Continuous-Flow Multi-Piston Pump With Synchronized Changeover
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Solution Overview
Problem
Positive displacement, dual, reciprocating piston pumps experience pulsation and noise due to material stoppage during piston direction changes, leading to unwanted pipeline movement.
Innovation Solution
A multi-piston pump system with two independent pumps coordinated by a controller to execute synchronized strokes, ensuring continuous flow by alternating discharge, suction, and compression stages without overlapping cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a dual reciprocating piston pump system is used, then material transfer efficiency is improved, but pulsation and noise occur due to material stoppage during piston direction changes
Solution Approach 1:
The system divides the pumping function into two independent piston pumps operating in parallel, each capable of independent suction and discharge cycles. This segmentation allows one pump to discharge while the other sucks, eliminating the material stoppage that occurs in single-pump systems during direction changes, thereby reducing pulsation and noise while maintaining high material transfer efficiency
Solution Approach 2:
The controller coordinates the operation of both pumps so that one pump is always ready to discharge while the other is preparing to discharge by completing its suction and compression strokes. This preliminary action ensures continuous material flow without interruption, preventing the pulsation and noise caused by material stoppage during piston direction changes
2Duration of action of stationary object
If piston pumps switch roles between discharge and suction, then continuous operation is maintained, but material stops forward movement during changeover causing pipeline movement
Solution Approach 1:
The system maintains continuous useful action by coordinating two piston pumps so that while one pump is discharging material, the other is sucking and compressing material. The controller ensures that the discharge stroke of one pump overlaps with the suction and compression strokes of the other, eliminating the interruption in material forward movement during changeover, thus preventing pipeline movement while maintaining continuous operation
Data Source
AI summary
A multi-piston pump includes a first pump configured to execute a discharge stroke, a suction stroke, a compression stroke, a hold, and a changeover, a second pump independent from the first pump, the second pump being configured to execute a discharge stroke, a suction stroke, a compression stroke, a hold, and the changeover; and a controller that coordinates operation of the first pump and the second pump so that while the first pump is executing the discharge stroke, the second pump is executing the suction stroke, the compression stroke, and the hold, and the first pump and the second pump execute the changeover simultaneously and while the second pump is executing the discharge stroke, the first pump is executing the suction stroke, the compression stroke, and the hold and the first pump and the second pump execute the changeover simultaneously