CN112761960A - Axial-flow model pump performance verification test arrangement mode - Google Patents
Axial-flow model pump performance verification test arrangement mode Download PDFInfo
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- CN112761960A CN112761960A CN202110075539.3A CN202110075539A CN112761960A CN 112761960 A CN112761960 A CN 112761960A CN 202110075539 A CN202110075539 A CN 202110075539A CN 112761960 A CN112761960 A CN 112761960A
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 238000012795 verification Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 124
- 238000002474 experimental method Methods 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000010200 validation analysis Methods 0.000 claims 5
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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- Business, Economics & Management (AREA)
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses an arrangement mode for performance verification tests of an axial-flow model pump, which comprises an experiment mechanism, wherein the experiment mechanism comprises an experiment water tank, a model pump experiment water pipe and a model pump experiment platform, and relates to the technical field of mechanical centrifugal pumps. According to the arrangement mode for the performance verification test of the axial-flow model pump, the performance of the pump is the key to normal and stable operation of core equipment and device processes, the performance requirement of the equipment cannot be met at one time by directly adopting actual pump manufacturing, the price is high, a reduced axial-flow pump horizontal model pump is specially needed to verify performance parameters, the cavitation residual quantity and the flow of an axial-flow pump are high, the cavitation residual quantity and the flow of a common test bed device cannot meet the requirement, a preposed pump is specially needed to be arranged to improve the inlet of the axial-flow pump and increase the test flow of the pump, and piping is simple and convenient to install during testing of the axial-flow pump horizontal model pump.
Description
Technical Field
The invention relates to the technical field of mechanical centrifugal pumps, in particular to an arrangement mode of an axial-flow model pump performance verification test.
Background
The hydraulic model test is a means of reproducing (or previewing) the water flow phenomenon similar to a prototype in a model to observe, analyze and research the water flow motion law, when the prototype water flow cannot be directly measured due to various reasons, a universal theoretical mode and a simple generalized test cannot reflect the complex water flow condition, a special model needs to be manufactured and tested, a modern model test with scientific basis is started at the end of 19 th century, the 20 th century is greatly developed and widely applied, all test items of the hydraulic model test need to be performed on the same test bed and the same model device, and the current water pump device test generally requires an efficiency test, a cavitation test, an runaway characteristic test, a pressure pulsation test and a force characteristic test. The overall characteristic of the water pump is one of indispensable original data of the water pump station transition process calculated based on the external characteristic theory, and the overall characteristic curve of the water pump is an important technical basis for analyzing the hydraulic transition process of the water supply system of the pump, researching safety protection measures and optimally designing the water supply system of the pump.
The performance of the existing pump is the key of normal and stable operation of core equipment and device processes, the actual pump manufacturing is directly adopted, the requirement on equipment performance cannot be met at one time, the price is high, a reduced horizontal model pump of the axial flow pump is specially needed for verifying performance parameters, the cavitation residual quantity and the flow of the axial flow pump are high, the cavitation residual quantity and the flow of a common test bed device cannot meet the requirement, and a front pump is specially needed to be configured for improving the inlet of the axial flow pump and increasing the test flow of the pump.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an arrangement mode of an axial-flow model pump performance verification test, and solves the problems that the performance of the existing pump is the key of normal and stable operation of core equipment and device processes, the actual pump manufacturing can not be guaranteed to meet the equipment performance requirement at one time, the price is high, a reduced axial-flow pump horizontal model pump is specially needed to verify performance parameters, the cavitation residual quantity and the flow of an axial-flow pump are high, the cavitation residual quantity and the flow of a common test bed device can not meet the requirements, and a front-mounted pump is specially needed to be configured to improve the inlet of the axial-flow pump and increase the test flow of the pump.
In order to achieve the purpose, the invention is realized by the following technical scheme: an arrangement mode of an axial-flow model pump performance verification test comprises an experiment mechanism, wherein the experiment mechanism comprises an experiment water tank, a model pump experiment water pipe and a model pump experiment platform; the surface of the experimental water tank is communicated with a model pump experimental water pipe, the surface of the model pump experimental water pipe is fixedly connected with a water inlet valve, the water inlet valve is communicated with a front-mounted pump through the model pump experimental water pipe, a water outlet of the front-mounted pump is communicated with a front-mounted pump pipeline through the model pump experimental water pipe, the surface of the experimental water tank is communicated with a model pump experimental platform through the model pump experimental water pipe, one end of the model pump experimental water pipe is communicated with a water outlet valve, the water outlet valve is communicated with a flowmeter through the model pump experimental water pipe, and one end of the model pump experimental water pipe is communicated with the front-mounted pump pipeline through a conversion joint.
As a further scheme of the invention: the outlet of the adapter is communicated with a model pump, the left end of the model pump is communicated with a torque sensor through a water pipe, and the left end of the torque sensor is communicated with an experimental motor through a pipeline.
As a further scheme of the invention: and one end of the model pump experiment water pipe is communicated with an outlet pressure measuring meter and an inlet pressure measuring meter.
As a further scheme of the invention: the model pump experiment platform comprises an experiment base, and the model pump, the torque sensor and the experiment motor are all installed on the experiment base through bolts.
As a further scheme of the invention: the experimental mechanism comprises a pit, and the front pump is located in an inner cavity of the pit.
As a further scheme of the invention: the performance verification test arrangement mode comprises the following steps:
after the test pipelines are connected according to the configuration of the graph, when the water inlet valve and part of the water outlet valves are opened by clean water in the test water tank, the pipeline at the bottom of the test is filled with a medium, the pre-pump is started through frequency conversion, at the moment, the test pipeline is completely filled with the medium due to the normal operation of the pre-pump, the medium returns to the test water tank through the outlet of the pipeline, the pre-pump improves the inlet pressure of the model pump, the cavitation caused by the over-small inlet pressure when the model pump is started is prevented, the normal verification performance of the pump is influenced, after the pre-pump is started, the size of the water outlet valve is adjusted to observe the flow meter to reach a certain flow rate, at the moment, the test motor is started to drive the torque sensor and the model pump and keep normal operation, the size of the water outlet valve is adjusted to observe the flow rate of different required working condition points, the flow rate reading is read and, after the working condition is read and recorded, the size of the water outlet valve is continuously adjusted to observe the flow of the flowmeter to reach the next required working condition point.
Advantageous effects
The invention provides an arrangement mode of an axial-flow model pump performance verification test. Compared with the prior art, the method has the following beneficial effects:
1. an arrangement mode of an axial-flow model pump performance verification test comprises an experiment mechanism, wherein the experiment mechanism comprises an experiment water tank, a model pump experiment water pipe and a model pump experiment platform; the surface of the experimental water pool is communicated with a model pump experimental water pipe, the surface of the model pump experimental water pipe is fixedly connected with a water inlet valve, the water inlet valve is communicated with a front pump through the model pump experimental water pipe, a water outlet of the front pump is communicated with a front pump pipeline through the model pump experimental water pipe, the surface of the experimental water pool is communicated with a model pump experimental platform through the model pump experimental water pipe, one end of the model pump experimental water pipe is communicated with a water outlet valve, the water outlet valve is communicated with a flowmeter through the model pump experimental water pipe, one end of the model pump experimental water pipe is communicated with the front pump pipeline through a conversion connector, the performance of the pump is the key to normal and stable operation of core equipment and device processes, the performance requirements of equipment cannot be met at one time by directly adopting actual pump manufacturing, the cost is high, a reduced axial flow pump model pump is specially needed to verify performance parameters, the cavitation allowance of the, the cavitation erosion allowance and the flow of the common test bed device can not meet the requirements, a preposed pump is specially required to be arranged to improve the inlet of the axial flow pump and increase the test flow of the pump, and the horizontal model pump of the axial flow pump is simple and convenient to install and arrange pipes during testing.
2. An axial-flow model pump performance verification test arrangement mode is characterized in that after test pipelines are connected according to a diagram configuration, when a water inlet valve and a part of water outlet valves are opened by clean water in a test water tank, a test bottom pipeline is filled with a medium, a front-mounted pump is started through frequency conversion, the test pipeline is completely filled with the medium due to normal operation of the front-mounted pump at the moment, the medium returns to the test water tank through a pipeline outlet, the front-mounted pump improves the inlet pressure of the model pump to prevent cavitation from occurring due to over-small inlet pressure when the model pump is started to influence the normal verification performance of the pump, after the front-mounted pump is started, the size of the water outlet valve is adjusted to observe a flow meter to reach a certain flow rate, an experiment motor is started to drive a torque sensor and the model pump to keep normal operation, the size of the water outlet valve is adjusted to observe the flow rate of the flow, and observing and recording the readings of the inlet pressure gauge, the outlet pressure gauge and the torque sensor under the working condition, and continuously adjusting the size of the water outlet valve to observe the flow rate of the flowmeter to reach the required next working condition point after reading and recording the working condition.
Drawings
FIG. 1 is a schematic view of the structural connection of the present invention;
FIG. 2 is a schematic diagram of a partial connection of the experimental platform structure according to the present invention;
fig. 3 is a schematic diagram of the connection of the pit structure of the present invention.
In the figure: 1. an experimental mechanism; 2. an experimental water pool; 3. a model pump experiment water pipe; 4. a model pump experiment platform; 5. a water inlet valve; 6. a pre-pump; 7. a pre-pump line; 8. a water outlet valve; 9. a flow meter; 10. a crossover sub; 11. a model pump; 12. a torque sensor; 13. an experimental motor; 14. an outlet pressure gauge; 15. importing a pressure gauge; 16. an experiment base; 17. and (7) pit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: an arrangement mode of an axial-flow model pump performance verification test comprises an experiment mechanism 1, wherein the experiment mechanism 1 comprises an experiment water tank 2, a model pump experiment water pipe 3 and a model pump experiment platform 4, the surface of the experiment water tank 2 is communicated with the model pump experiment water pipe 3, the surface of the model pump experiment water pipe 3 is fixedly connected with a water inlet valve 5, the water inlet valve 5 is communicated with a front pump 6 through the model pump experiment water pipe 3, a water outlet of the front pump 6 is communicated with a front pump pipeline 7 through the model pump experiment water pipe 3, the surface of the experiment water tank 2 is communicated with the model pump experiment platform 4 through the model pump experiment water pipe 3, one end of the model pump experiment water pipe 3 is communicated with a water outlet valve 8, the water outlet valve 8 is communicated with a flowmeter 9 through the model pump experiment water pipe 3, one end of the model pump experiment water pipe 3 is communicated with the front pump pipeline 7 through a conversion joint 10, and an outlet of the, the left end of model pump 11 leads to pipe intercommunication to have torque sensor 12, torque sensor 12's left end has experiment motor 13 through the pipeline intercommunication, model pump experiment water pipe 3's one end intercommunication has export pressure gauge 14 and import pressure gauge 15, model pump experiment platform 4 includes experiment base 16, and model pump 11, torque sensor 12 and experiment motor 13 all install in experiment base 16 through the bolt, and experiment mechanism 1 includes pit 17, and leading pump 6 is located the inner chamber of pit 17.
The performance verification test arrangement mode comprises the following steps:
after the test pipelines are connected according to the configuration of the figure, when the water inlet valve 5 and part of the water outlet valves 8 are opened by clean water in the test water tank 2, the pipeline at the bottom of the test is filled with a medium, the front-mounted pump 6 is started through frequency conversion, the test pipeline is completely filled with the medium due to the normal operation of the front-mounted pump 6 at the moment, the medium returns to the test water tank 2 through the outlet of the pipeline, the front-mounted pump 6 increases the inlet pressure of the model pump 11 to prevent cavitation from occurring due to the small inlet pressure when the model pump 11 is started to influence the normal verification performance of the pump, after the front-mounted pump 6 is started, the size of the water outlet valve 8 is adjusted to observe the flow meter 9 to reach a certain flow rate, the test motor 13 is started to drive the torque sensor 12 and the model pump 11 to keep normal operation, the size of the water outlet valve 8 is adjusted to observe the flow, and observing and recording the reading of the inlet pressure gauge 15, the reading of the outlet pressure gauge 14 and the reading of the torque sensor 12 under the working condition, and continuously adjusting the size of the water outlet valve 8 to observe the flow of the flowmeter 9 to reach the required next working condition point after reading and recording the working condition.
When the invention is used, after the test pipelines are connected according to the configuration of the figure, when the water inlet valve 5 and part of the water outlet valve 8 are opened by clean water in the test water tank 2, the test bottom pipeline is filled with the medium, the pre-pump 6 is started through frequency conversion, the test pipeline is completely filled with the medium due to the normal operation of the pre-pump 6 at the moment, the medium returns to the test water tank 2 through the outlet of the pipeline, the pre-pump 6 improves the inlet pressure of the model pump 11, the cavitation caused by the over-small inlet pressure when the model pump 11 is started is prevented, the normal verification performance of the pump is influenced, after the pre-pump 6 is started, the size of the water outlet valve 8 is adjusted to observe the flow meter 9 to reach a certain flow rate, the test motor 13 is started to drive the torque sensor 12 and the model pump 11 and keep normal operation, the size of the water outlet valve 8 is adjusted to observe the flow rate of the flow meter, and observing and recording the reading of the inlet pressure gauge 15, the reading of the outlet pressure gauge 14 and the reading of the torque sensor 12 under the working condition, and continuously adjusting the size of the water outlet valve 8 to observe the flow of the flowmeter 9 to reach the required next working condition point after reading and recording the working condition.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (6)
1. The utility model provides an experimental arrangement mode of axial-flow model pump performance verification, includes experimental mechanism (1), its characterized in that: the experimental mechanism (1) comprises an experimental water tank (2), a model pump experimental water pipe (3) and a model pump experimental platform (4);
the surface intercommunication in experiment pond (2) has model pump experiment water pipe (3), the fixed surface of model pump experiment water pipe (3) is connected with water intaking valve (5), water intaking valve (5) have leading pump (6) through model pump experiment water pipe (3) intercommunication, the outlet of leading pump (6) has leading pump pipeline (7) through model pump experiment water pipe (3) intercommunication, the surface in experiment pond (2) is through model pump experiment water pipe (3) and model pump experiment platform (4) intercommunication, the one end intercommunication of model pump experiment water pipe (3) has outlet valve (8), outlet valve (8) have flowmeter (9) through model pump experiment water pipe (3) intercommunication, the one end of model pump experiment water pipe (3) and leading pump pipeline (7) are through crossover sub (10) intercommunication.
2. The axial flow model pump performance validation test arrangement of claim 1, wherein: the outlet of the conversion joint (10) is communicated with a model pump (11), the left end of the model pump (11) is communicated with a torque sensor (12) through a water pipe, and the left end of the torque sensor (12) is communicated with an experiment motor (13) through a pipeline.
3. The axial flow model pump performance validation test arrangement of claim 1, wherein: one end of the model pump experiment water pipe (3) is communicated with an outlet pressure gauge (14) and an inlet pressure gauge (15).
4. The axial flow model pump performance validation test arrangement of claim 2, wherein: the model pump experiment platform (4) comprises an experiment base (16), and the model pump (11), the torque sensor (12) and the experiment motor (13) are all installed on the experiment base (16) through bolts.
5. The axial flow model pump performance validation test arrangement of claim 1, wherein: the experimental mechanism (1) comprises a pit (17), and the front pump (6) is positioned in an inner cavity of the pit (17).
6. The axial flow model pump performance validation test arrangement of claim 1, wherein: the performance verification test arrangement mode comprises the following steps:
after the test pipelines are connected according to the configuration of the drawing, when the water inlet valve (5) and part of the water outlet valves (8) are opened by clean water in the test water tank (2), the pipeline at the bottom of the test is filled with a medium, the front-mounted pump (6) is started through frequency conversion, the test pipeline is completely filled with the medium due to the normal operation of the front-mounted pump (6), the medium returns to the test water tank (2) through the outlet of the pipeline, the front-mounted pump (6) improves the inlet pressure of the model pump (11), the phenomenon that the cavitation is caused by the undersize inlet pressure when the model pump (11) is started to influence the normal verification performance of the pump is prevented, after the front-mounted pump (6) is started, the size of the water outlet valve (8) is adjusted to observe the flow rate of the flow meter (9), at the moment, the test motor (13) is started to drive the torque sensor (12) and the model pump (11) and keep normal operation, the size of the water, and after the flow is stable, reading and recording flow readings, observing and recording the readings of the inlet pressure gauge (15), the outlet pressure gauge (14) and the torque sensor (12) under the working condition, and continuously adjusting the size of the water outlet valve (8) to observe the flow of the flowmeter (9) to reach the required next working condition point after reading and recording the working condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110075539.3A CN112761960A (en) | 2021-01-20 | 2021-01-20 | Axial-flow model pump performance verification test arrangement mode |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110075539.3A CN112761960A (en) | 2021-01-20 | 2021-01-20 | Axial-flow model pump performance verification test arrangement mode |
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| CN112761960A true CN112761960A (en) | 2021-05-07 |
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| CN202110075539.3A Pending CN112761960A (en) | 2021-01-20 | 2021-01-20 | Axial-flow model pump performance verification test arrangement mode |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7094016B1 (en) * | 1999-07-21 | 2006-08-22 | Unitec Institute Of Technology | Multi-phase flow pumping means and related methods |
| JP2008185410A (en) * | 2007-01-29 | 2008-08-14 | Port & Airport Research Institute | Centrifuge model test apparatus |
| CN105179303A (en) * | 2015-10-24 | 2015-12-23 | 扬州大学 | Axial flow pump impeller all-operating-condition design method |
| CN111046505A (en) * | 2019-11-28 | 2020-04-21 | 河海大学 | Axial flow pump spoke parameter optimization design method based on response surface model |
-
2021
- 2021-01-20 CN CN202110075539.3A patent/CN112761960A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7094016B1 (en) * | 1999-07-21 | 2006-08-22 | Unitec Institute Of Technology | Multi-phase flow pumping means and related methods |
| JP2008185410A (en) * | 2007-01-29 | 2008-08-14 | Port & Airport Research Institute | Centrifuge model test apparatus |
| CN105179303A (en) * | 2015-10-24 | 2015-12-23 | 扬州大学 | Axial flow pump impeller all-operating-condition design method |
| CN111046505A (en) * | 2019-11-28 | 2020-04-21 | 河海大学 | Axial flow pump spoke parameter optimization design method based on response surface model |
Non-Patent Citations (3)
| Title |
|---|
| 平文华等: "排湖泵站PNZ2800型水泵装置模型试验", 《中国农村水利水电》 * |
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Application publication date: 20210507 |