Driven Gas-Liquid Separation Starting Device for Centrifugal Pumps
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Solution Overview
Problem
Centrifugal pumps require pre-filling with water before operation, leading to complex and time-consuming processes, and connecting a vacuum pump results in high noise and energy consumption, with potential damage from gas-liquid mixing to hydraulic components.
Innovation Solution
A driven gas-liquid separation starting device with a housing containing a gas-liquid chamber, primary and secondary separation chambers, and a self-priming chamber, utilizing a rotation mechanism and cam mechanisms to separate and exhaust gases, reducing energy consumption and noise, and ensuring the pump chamber is always filled with water for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a vacuum pump is connected to the centrifugal pump for vacuuming, then air exhaust function is improved, but noise and energy consumption increase
Solution Approach 1:
The centrifugal pump itself performs the air exhaust function through its impeller creating negative pressure during startup, eliminating the need for an external vacuum pump. The pump's own rotation drives gas-liquid separation and air discharge, making the system self-sufficient for priming operations.
Solution Approach 2:
The air exhaust function is extracted from the main pumping function and implemented through a dedicated gas-liquid separation chamber and exhaust chamber, allowing simultaneous air discharge and water pumping without requiring additional vacuum pumping equipment.
2Object-generated harmful factors
If pre-filling the pump chamber with water is required, then gas-liquid separation is improved, but operation complexity and time consumption increase
Solution Approach 1:
The gas-liquid separation chamber and exhaust chamber are pre-configured with separation mechanisms that automatically initiate gas-liquid separation as soon as the pump starts rotating, eliminating the need for manual pre-filling operations. The system is designed to perform separation actions before normal pumping begins.
Solution Approach 2:
The pump chamber automatically performs gas-liquid separation through its own rotation and the configured separation chambers, without requiring external intervention or manual pre-filling. The system self-primers through its own operational characteristics.
3Productivity
If gas-liquid mixing occurs in the pump chamber, then pumping function is maintained, but hydraulic components are damaged
Solution Approach 1:
The pump system is segmented into distinct functional zones: a gas-liquid separation chamber for separation operations, an exhaust chamber for gas discharge, and the main pump chamber for water pumping. This spatial segmentation prevents gas-liquid mixing from reaching the hydraulic components while maintaining pumping efficiency.
Solution Approach 2:
The gas-liquid separation chamber acts as an intermediary between the pump inlet and the main pump chamber, capturing and separating gas-liquid mixtures before they can enter and damage the hydraulic components. The separation chamber mediates the harmful effects of gas-liquid mixing.
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 device enables efficient air suction, air exhaust, and gas-liquid separation, reducing vibration and noise, prolonging pump life, and improving operational efficiency by using a combination of electric, gas, and liquid power, and automatic chamber filling.
Implementation Method 1
a rotation mechanism is arranged in the gas-liquid chamber, and the rotation mechanism is driven by a mixed gas-liquid fluid in the pump channel to rotate
Implementation Method 2
a plurality of spiral gas-liquid separation mechanisms in contact with the second cam mechanism are arranged in each of the primary gas-liquid separation units, and the spiral gas-liquid separation mechanisms are driven by rotation of the second cam mechanism to cut the mixed gas-liquid fluid
Implementation Method 3
a first cam mechanism is arranged in the self-priming chamber, the secondary gas-liquid separation chamber is in contact with a rolling pair of the first cam mechanism through a supporting connecting rod, and a volume of the secondary gas-liquid separation chamber is changed by rotation of the first cam mechanism, to carry out further gas-liquid separation
Implementation Method 4
the pump chamber is provided with an impeller and a water inlet, the water inlet is communicated with the gas-liquid chamber, and the pump chamber utilizes negative pressure to suck water into the pump chamber
Data Source
AI summary
A driven gas-liquid separation starting device, a gas-liquid chamber is communicated with a pump channel, a rotation mechanism is arranged in the gas-liquid chamber; a second cam mechanism is arranged in a primary gas-liquid separation chamber, which is divided by a baffle and the second cam mechanism into primary gas-liquid separation units, spiral gas-liquid separation mechanisms in contact with the second cam mechanism are arranged the primary gas-liquid separation unit; a first cam mechanism is arranged in a self-priming chamber, a secondary gas-liquid separation chamber is in contact with a rolling pair through a supporting connecting rod, a volume of the secondary gas-liquid separation chamber is changed by rotation of the first cam mechanism, to carry out further gas-liquid separation on a mixed gas-liquid fluid with a high gas content obtained through separation in the primary gas-liquid separation chamber; an exhaust chamber is arranged on the self-priming chamber.