A large bulb tubular pump device
A bulb tubular flow pump, a large-scale technology, applied to the components of pumping devices for elastic fluids, cross-flow pumps, circulation pumps, etc., can solve the problems of large axial size, complex structure, and high investment in pumping stations, and eliminate Effects of liquid circulation, reliability assurance, and safety assurance
Active Publication Date: 2020-04-14
HOHAI UNIV +1
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Problems solved by technology
[0004] The technical problem to be solved in the present invention is to provide a large-scale bulb cross-flow pump device for the above-mentioned deficiencies in the prior art. The efficiency of the large-scale bulb cross-flow pump device can reach more than 80%, and the efficiency of the pump impeller can reach more than 91%. , can be used for the operation of pumping stations with medium and low head and large flow, and can solve the technical problems of low efficiency, complex structure, large axial size of pumping stations and high investment faced by current bulb tubular pump devices
Method used
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Examples
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Effect test
example 1
[0059] Example 1, when the runner blade angle is 11°, the head of the pump device is 3.48m, and the measured flow rate of the unit is 28.0m 3 / s, the efficiency of the pump device is 81.86%, the efficiency of the water pump is 91.03%, the head loss of the guide vane body section is 0.23m, and the head loss of the bulb body section is 0.09m;
example 2
[0060] Example 2, when the rotor blade rotation angle is 13°, the head of the pump device is 3.63m, and the measured flow rate of the unit is 30.3m 3 / s, the efficiency of the pump device is 82.09%, the efficiency of the water pump is 91.27%, the head loss of the guide vane body section is 0.27m, and the head loss of the bulb body section is 0.08m;
example 3
[0061] Example 3, when the rotor blade rotation angle is 15°, the head of the pump device is 3.90m, and the measured flow rate of the unit is 32.0m 3 / s, the efficiency of the pump device is 81.03%, the efficiency of the water pump is 91.33%, the head loss of the guide vane body section is 0.26m, and the head loss of the bulb body section is 0.11m;
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The invention discloses a large-scale lamp bulb tubular pump device. The large-scale lamp bulb tubular pump device comprises a water inlet, a water inlet runner, a rotating wheel chamber, a guide blade body section, a lamp bulb body section, a water outlet runner and a water outlet which are sequentially arranged in the water flow direction. A rotating wheel comprises a water guide taper, a hub and a rotating wheel main shaft, the outer surface of the hub is a spherical surface, rotating wheel blades are evenly arranged in the circumferential direction of the hub and are dissymmetrical twistedblades, the guide blade body section is internally provided with four to six dissymmetrical guide blades, single guide blade outlets right face manholes, and therefore influences of the manholes on the guide blade outlet flowing state are reduced. A lamp bulb body penetrates through the guide blade body section and the lamp bulb body section, the tail of the lamp bulb body is oval, and thereforethe tail backflow zone is reduced. Through numerical simulation and experimental verification, the pump device efficiency can reach 80% or above, the pump impeller efficiency can reach 91% or above, and the large-scale lamp bulb tubular pump device can be used for running of medium and low lift large-flow pump stations and can also be used for transformation and renovation of existing lamp bulb tubular pump stations.
Description
technical field [0001] The invention relates to the technical field of fluid machinery and energy power, in particular to a large bulb tubular pump device. Background technique [0002] The South-to-North Water Diversion Project is a great project in my country that is of great significance to society, economy, and ecology. Tubular flow pumps are the preferred pump type for low-lift, high-flow pumping stations in the South-to-North Water Diversion Project, and horizontally installed bulb tubular flow pumps have the advantages of smooth and smooth inlet and outlet channels, good water flow conditions, and small hydraulic losses. Therefore, the design and development High-efficiency bulb tubular pumps have far-reaching significance for reducing energy consumption and obtaining ideal economic benefits. [0003] At present, there are not many practical applications of large bulb tubular pump units at home and abroad, mainly due to the lack of experience in pump design, manufact...
Claims
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IPC IPC(8): F04D5/00F04D29/18F04D29/40
CPCF04D5/00F04D29/18F04D29/406
Inventor 周大庆戴启璠郑源陈会向顾文菊王宏图孟小敏梁豪杰仲子夜
Owner HOHAI UNIV