Bailer-Type Long-Shaft Pump for Large-Flow Stations
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Solution Overview
Problem
Existing large-flow pumping stations using horizontal pumps have low efficiency, high construction costs, and require extensive infrastructure, including main and auxiliary workshops, maintenance rooms, and elevated pump rooms, leading to prolonged construction periods and increased investment.
Innovation Solution
A bailer-type long-shaft pump with a simple structure, comprising a plurality of bailer vehicles, a long shaft, a bearing, a transmission device including a planetary gearbox, an orthogonal shaft gearbox, and a frequency converter, which allows for efficient water transfer from a lower to a higher water level without the need for dedicated workshops or elevated pump rooms, by distributing equipment rooms traversely across the water channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If horizontal pumps (vertical shaft cross-flow pumps and plane S-shaped shaft extension pumps) are used in large-flow pumping stations, then the pumping capacity is sufficient, but the efficiency is low due to high flow channel loss ratio and the infrastructure requirements increase cost and construction time
Solution Approach 1:
The patent applies hydraulic principles by designing a bailer-type pump that utilizes the buoyancy and weight of water-filled buckets to lift water directly. The pump consists of multiple bailer vehicles with buckets that are submerged in the water channel, and water is lifted by the mechanical action of the buckets being raised from the lower water level to the higher water level, eliminating complex flow channels and reducing energy loss.
Solution Approach 2:
The pump is divided into multiple independent bailer vehicles, each with its own set of buckets mounted on a long shaft. This segmentation allows each bucket to independently perform the water lifting function, improving overall pumping efficiency while maintaining large flow capacity through the parallel operation of multiple buckets.
2Reliability
If horizontal pumps with dedicated workshops and maintenance rooms are installed, then the pumping function is ensured, but the device complexity and construction cost increase
Solution Approach 1:
The patent merges the pumping function directly into the water channel structure. The bailer-type pump is installed within the water channel itself, using the channel's existing structure as part of the pump system. This eliminates the need for separate workshops, maintenance rooms, and elevated pump rooms, as all components are integrated into the channel environment.
Solution Approach 2:
The long shaft serving the bailer vehicles serves multiple functions: it supports the buckets for water lifting, provides a structure for installing the transmission device, and acts as a support for the entire pumping mechanism. The water channel itself serves both as the flow path and as part of the pump structure, reducing the need for additional infrastructure.
3Ease of operation
If elevated pump rooms and extensive infrastructure are constructed, then the pumping station can accommodate horizontal pumps, but the construction period and investment increase
Solution Approach 1:
The patent transitions from a vertical arrangement (elevated pump rooms above ground) to a horizontal arrangement (pump components distributed along the water channel). The long shaft with bailer vehicles is installed horizontally within the channel, eliminating the need for vertical elevation and associated construction complexity.
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 bailer-type long-shaft pump achieves high efficiency and reduced costs by eliminating the need for additional infrastructure, shortening construction periods, and lowering operational expenses while maintaining efficient water transfer and reducing space requirements.
Implementation Method 1
the transmission device comprises a planetary gearbox, an orthogonal shaft gearbox and a frequency converter
Implementation Method 2
the transmission device comprises a planetary gearbox, an orthogonal shaft gearbox and a frequency converter
Implementation Method 3
the transmission device comprises a planetary gearbox, an orthogonal shaft gearbox and a frequency converter
Implementation Method 4
the blades are distributed on the surface of the cylindrical base in an annular array radially extending from the center of the long shaft; wherein adjacent blades and the surface of the cylindrical base enclose a space to form a bailing bucket capable of bailing water from a lower water level of a water channel to a higher water level of the water channel
Data Source
AI summary
Disclosed are a bailer-type long-shaft pump (100) and an associated pump station (200). The long-shaft pump comprises a bailer vehicle (110), a long shaft (120), a bearing (130), a transmission device (140) and an electric motor (150). One end of the long shaft (120) successively passes through the bearing (130) and the transmission device (140) so as to be in transmission connection with a drive shaft of the electric motor (150). The pump station (200) comprises a pump station foundation (210), several equipment rooms (231) transversely distributed at intervals and constructed on the pump station foundation (210), and two ends of the long shaft (120) are supported on side walls of two adjacent equipment rooms. The bailer-type long-shaft pump achieve large water flow and low lift, the pump station is space-saving, has shorter construction cycle, and reduces investment and operation costs.