Fluid Supplementation for Self-Priming Pump Reliability
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Solution Overview
Problem
In online monitoring systems for wastewater pollution, self-priming pumps can fail due to bacterial growth and blockage in sample pipes, leading to incomplete monitoring data as they require a consistent water level to function properly.
Innovation Solution
The integration of a fluid supplementation device with a level sensing switch, immersible pump, and filter unit ensures that the sample level in the first sample pipe is maintained above a default value, preventing pump failure by supplementing the sample when levels drop, using components like capacitance or ultrasonic level switches and an immersible pump to maintain adequate fluid levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a self-priming pump is used to transport wastewater samples, then the monitoring system can perform water quality sampling, but the pump may fail due to insufficient water level in the sample pipe
Solution Approach 1:
The fluid supplementation device performs preliminary action by detecting the water level in advance and supplementing water before the pump fails. The level sensing switch monitors the water level continuously, and when it drops below the preset value, the device activates the pump to supplement water, preventing pump failure before it occurs.
Solution Approach 2:
The system implements feedback control through the level sensing switch that continuously monitors the water level in the sample pipe and provides feedback to the control unit. Based on this feedback, the control unit adjusts the pump operation to maintain the water level within the required range, ensuring reliable pump operation.
2Reliability
If the sample pipe water level drops below the required level, then the self-priming pump cannot work normally, but adding a fluid supplementation device increases system complexity
Solution Approach 1:
The fluid supplementation device enables the system to be self-service by automatically detecting and correcting low water level conditions without external intervention. The level sensing switch and control unit work together to automatically activate the supplement pump when needed, making the system self-regulating and reducing the need for manual monitoring and intervention.
3Reliability
If bacteria grow in the wastewater flowing through the sample pipe check valve, then the check valve becomes blocked and the sample pipe loses water, but implementing preventive measures increases device complexity
Solution Approach 1:
The invention extracts the check valve from the potential blockage problem by providing an alternative water supplementation path. When the check valve becomes blocked due to bacterial growth, the fluid supplementation device can bypass the blockage by pumping water directly into the sample pipe from the reservoir, effectively removing the check valve's critical function from the system's reliability chain.
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 solution ensures continuous operation of the self-priming pump and normal monitoring by maintaining the required fluid levels in the sample pipe, preventing blockages and ensuring reliable data collection.
Implementation Method 1
The level sensing switch comprises one of a capacitance type level switch, a floating ball type level switch, an electronic level switch, an ultrasonic and a pitchfork level switch
Implementation Method 2
the pump unit extracts the sample to be tested from the container and transports the same to the fluid supplementation pipe
Data Source
AI summary
The present invention discloses an online monitoring system, comprising a self-priming pump, a first sample pipe and a container containing a sample to be tested, and the first sample pipe connects the self-priming pump and the container, and the self-priming pump transports the ample to be tested in the container to the first sample pipe; the online monitoring system further comprises a fluid supplementation device connected with the first sample pipe, and a default level value is preset in the fluid supplementation device, and the fluid supplementation device monitors a level of the sample to be tested in the first sample pipe, and extracts the sample to be tested from the container to supplement to the first sample pipe as the level value of the sample to be tested in the first sample pipe is lower than the default level value.