CN116123107B - Hydraulic model test measurement and control device for double-water-guide cone axial flow pump - Google Patents
Hydraulic model test measurement and control device for double-water-guide cone axial flow pump Download PDFInfo
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- CN116123107B CN116123107B CN202310238983.1A CN202310238983A CN116123107B CN 116123107 B CN116123107 B CN 116123107B CN 202310238983 A CN202310238983 A CN 202310238983A CN 116123107 B CN116123107 B CN 116123107B
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000005259 measurement Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 170
- 238000005192 partition Methods 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims description 10
- 239000010813 municipal solid waste Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
A hydraulic model test measurement and control device for a double water guide cone axial flow pump comprises a lower water guide cone, a water inlet bell mouth, a partition plate, a first pipeline, an electromagnetic flowmeter, a valve, a circulating power pump, an upper water guide cone, a second pipeline and a water outlet bell mouth, wherein the water inlet bell mouth is arranged at the top end of the lower water guide cone, the water outlet bell mouth is arranged at the top end of the water inlet bell mouth, the partition plate is arranged between the water inlet bell mouth and the water outlet bell mouth, the upper water guide cone is arranged at the top end of the water outlet bell mouth, the first pipeline is arranged inside the water outlet bell mouth and extends upwards to pass through the upper water guide cone, one end of the second pipeline is arranged inside the first pipeline and is communicated with the water inlet bell mouth through the partition plate, one end of the second pipeline is connected with the first pipeline, the electromagnetic flowmeter, the valve and the circulating power pump are sequentially arranged on the second pipeline along the water flow direction in the second pipeline, time and economic cost of the manufacturing model pump are reduced, the overcurrent is convenient, and a test effect similar to that of the original pump is maintained.
Description
Technical Field
The invention belongs to the technical field of hydraulic model test measurement and control of axial flow pumps, and particularly relates to a hydraulic model test measurement and control device of a double-water-guide tapered axial flow pump.
Background
The hydraulic model test is a method for establishing a physical model with similar relation with a prototype and performing test, observation and research in order to solve the hydraulic engineering problem. The main key of the test is to ensure the similarity relation between the model and the prototype, and the main test parameters can be controlled without being limited and influenced by the reduction of the model; and facilitates the analog test by changing the test parameters.
As shown in fig. 3, in the actual use scene of the double water guide cone axial flow pump, the trash rack, the gate and the double water guide cone axial flow pump are sequentially installed from left to right. The bottom of the double water guide cone axial flow pump is provided with a lower water guide cone 1, the top of the double water guide cone axial flow pump is provided with an upper water guide cone 10, and an impeller 13 of the double water guide cone axial flow pump is driven by a motor 14 at the top.
According to the existing hydraulic model test method of the pump station, a model pump is required to be manufactured according to a similar proportion aiming at the physical model test of the axial flow pump with the inlet and outlet double water guide cones. The model pump has high precision requirement, complicated manufacturing process, few manufacturers capable of customizing small model pumps in China, difficult purchase of the model pumps, and higher mounting and fixing difficulty of the vertical axial flow model pump in model installation, and under the condition that the water inlet and outlet flow states of the model pump and the original pump are similar in test process due to the influence of the water guide cone, the flow measurement and calculation can be performed only by installing the flow meter at the outlet box culvert of the pump station. Therefore, a more economical and simple measurement and control device needs to be designed according to the needs of the model.
Disclosure of Invention
The invention aims to reduce the time and economic cost for manufacturing a model pump, facilitate the overcurrent control, maintain the test effect similar to that of the original pump, and independently and efficiently measure and control the water outlet flow of the pump under the condition of not damaging the water flow state of the inlet and outlet of the pump with the double water guide cone model, thereby providing a hydraulic model test measurement and control device for the double water guide cone axial flow pump;
in order to achieve the above purpose, the present invention adopts the following technical scheme:
A hydraulic model test measurement and control device of a double-water-guide cone axial flow pump comprises: the device comprises a lower water guide cone, an axial flow pump simulation inlet and outlet, a partition plate, a first pipeline, an electromagnetic flowmeter, a valve, a circulating power pump, an upper water guide cone and a second pipeline; the separation plate is arranged in the simulation inlet and outlet of the axial flow pump, the simulation inlet and outlet of the axial flow pump is separated into a water inlet bell mouth and a water outlet bell mouth, and a water inlet hole is formed in the center of the separation plate; the lower water guide cone is arranged at the water inlet bell mouth, and the upper water guide cone is arranged at the water outlet bell mouth; the vertical section of the first pipeline extends into the water outlet bell mouth from the center through the upper water guide cone, and a part of the vertical section of the second pipeline is wrapped in the vertical section of the first pipeline, and a gap is reserved between the vertical section of the first pipeline and the vertical section of the second pipeline; the bottom end of the vertical section of the second pipeline is connected with the water inlet hole, and the water outlet end of the vertical section of the first pipeline is not contacted with the partition plate; the electromagnetic flowmeter, the valve and the circulating power pump are sequentially arranged on the horizontal section of the second pipeline along the water flow direction in the second pipeline, and the horizontal section of the second pipeline is connected with the first pipeline to form a loop.
Further, the method further comprises the following steps: the test measurement and control platform, inside inlet channel and the play water channel of being equipped with of test measurement and control platform, trash rack and gate have been installed in proper order along the rivers direction in the inlet channel, inlet horn mouth is linked together with inlet channel, the side of intaking of play water channel is equipped with out water box culvert, and goes out water box culvert and be located inside the test measurement and control platform.
Further, the water outlet box culvert is communicated with the water outlet bell mouth.
Further, the wall of the water box culvert is connected with the upper cone opening of the upper water guide cone, and the outer wall of the vertical section of the first pipeline is connected with the lower cone opening of the upper water guide cone.
The beneficial effects are that: the invention can reduce the time and economic cost for manufacturing the model pump, is convenient for overcurrent control, keeps the test effect similar to that of the original pump, and independently and efficiently measures and controls the water outlet flow of the pump under the condition of not damaging the water flow state of the inlet and outlet of the pump with the double water guide cone model.
Drawings
FIG. 1 is a schematic structural diagram of a hydraulic model test measurement and control device of a double water guide cone axial flow pump;
FIG. 2 is a partial enlarged view of a hydraulic model test measurement and control device of a double water guide cone axial flow pump;
FIG. 3 is a schematic cross-sectional view of a prior art dual water cone axial flow pump for a water pump station;
In the figure: 1. lower water guide cone 2, water inlet bell mouth 3, division board, 4, pipeline No. 5, electromagnetic flowmeter, 6, valve, 7, circulating power pump, 8, gate, 9, play water box culvert, 10, upper water guide cone, 11, trash rack, 12, pipeline No. two, 13, impeller, 14, motor, 15, play water bell mouth.
Detailed Description
The invention is further explained below with reference to the drawings.
As shown in fig. 1, a hydraulic model test measurement and control device for a double-water-guide axial flow pump comprises: the device comprises a lower water guide cone 1, an axial flow pump simulation inlet and outlet, a test measurement and control table, a separation plate 3, a first pipeline 4, an electromagnetic flowmeter 5, a valve 6, a circulating power pump 7, a gate 8, a water outlet box culvert 9, an upper water guide cone 10, a trash rack 11 and a second pipeline 12.
The test measurement and control bench is internally provided with a water inlet channel and a water outlet channel, and a trash rack 11, a gate 8 and a lower water guide cone 1 are sequentially arranged in the water inlet channel along the water flow direction. The simulation inlet and outlet of the axial flow pump is arranged inside the test measurement and control platform and is used for communicating the water inlet channel with the water outlet box culvert 9. The separation plate 3 is arranged in the axial flow pump simulation inlet and outlet, and separates the axial flow pump simulation inlet and outlet into a water inlet bell mouth 2 positioned at the lower part and a water outlet bell mouth 15 positioned at the upper part, and a water inlet hole is formed in the center of the separation plate 3. The lower water guide cone 1 is arranged at the water inlet bell mouth 2, and the upper water guide cone 10 is arranged at the water outlet bell mouth 15. The simulated inlet and outlet of the axial flow pump is used for simulating the shape of a shell of a real double-water-guide-cone axial flow pump.
The vertical section of the first pipeline 4 penetrates into the water outlet bell mouth 15 from the center of the upper water guide cone 10, a part of the vertical section of the second pipeline 12 is wrapped in the vertical section of the first pipeline 4, and the bottom end of the vertical section of the second pipeline 12 is connected with a water inlet hole in the center of the partition plate 3. The electromagnetic flowmeter 5, the valve 6 and the circulating power pump 7 are sequentially arranged on the horizontal section of the second pipeline 12 along the water flow direction in the second pipeline 12, and the horizontal section of the second pipeline 12 is connected with the first pipeline 4, so that a loop is formed. The water outlet horn mouth 15 is communicated with the water outlet box culvert 9, and the water outlet box culvert 9 is arranged at the water inlet side of the water outlet channel and is communicated with the water outlet channel.
In this embodiment, the pipe diameter of the first pipe 4 is greater than that of the second pipe 12, and the diameter ratio 1 of the first pipe 4 to the second pipe 12 is: 2.5-3.5. One end of the vertical section of the second pipeline 12 extends downwards to the partition plate 3 along the center of the inside of the vertical section of the first pipeline 4 to be connected with the water inlet, the other end of the vertical section of the second pipeline 12 upwards penetrates through the pipe wall of the first pipeline 4 along the center of the inside of the vertical section of the first pipeline 4 to be communicated with the horizontal section of the second pipeline 12, so that water flows in from the water inlet, flows into the water inlet bell mouth 15 along a loop formed by the first pipeline 4 and the second pipeline 12, and the water inlet and outlet states of the real double-water guide cone axial flow pump are simulated.
The electromagnetic flowmeter 5, the valve 6 and the circulating power pump 7 are sequentially arranged on the horizontal section of the second pipeline 12 from right to left, wherein the electromagnetic flowmeter 5 is used for flow measurement and control, the valve 6 is used for adjusting water pumping quantity, the circulating power pump 7 is used for pumping water, the pumping state of the simulated real double-water-guide-cone axial flow pump is realized, the flow measurement and control are more convenient, and the measurement and control difficulty is reduced.
The wall of the water box culvert 9 is connected with the upper cone opening of the upper water guide cone 10, so that water flows out from the water outlet bell mouth 15 and flows into the water box culvert 9 along the outer side wall of the upper water guide cone 10.
As shown in fig. 2, the water outlet bell 15 is installed inside the test and control stand, and water flows into the second pipeline 12 from the water inlet hole on the partition plate 3. The outer pipe wall of the vertical section of the first pipeline 4 is connected with the lower cone opening of the upper water guide cone 10, part of the upper water guide cone 10 is positioned in the water outlet bell opening 15, the end part of the vertical section of the first pipeline 4 is not contacted with the partition plate 3, the diameter of the first pipeline 4 is 1 time or more than that of the partition plate 3 from the water outlet of the vertical section of the first pipeline 4, and the water is not higher than the bottom end of the upper water guide cone 10, so that water flows out from the water outlet end of the vertical section of the first pipeline 4 into the water outlet bell opening 15, and flows out from the outlet of the water outlet bell opening 15 after being baffled by the partition plate 3.
In the structure, the structure formed by the electromagnetic flowmeter 5, the valve 6 and the circulating power pump 7 simulates the water pumping structure formed by the impeller 13 and the motor 14 in the double-water-guide-cone axial flow pump, and compared with the water pumping structure formed by the existing impeller 13 and the motor 14, the water pumping structure can better regulate the flow and has lower manufacturing cost. The structure of the water inlet horn mouth 2, the water outlet horn mouth 15, the partition plate 3, the first pipeline 4 and the second pipeline 12 simulates the inlet and outlet channels and the inlet and outlet in the double-water-guide-cone axial flow pump, so that the double-water-guide-cone axial flow pump of the water outlet flow state prototype of the inlet and outlet channels is kept consistent, and the water flow rate measurement is more accurate.
The hydraulic model test measurement and control device for the whole double-water-guide-cone axial flow pump is low in manufacturing cost and convenient to install, so that the time and economic cost for manufacturing the model pump are reduced.
The implementation principle of the embodiment of the invention is as follows:
The model test starts, water flows in from a water inlet channel, reaches a gate 8 through a trash rack 11, opens the gate 8, flows into a water inlet bell mouth 2 after being guided by a lower water guide cone 1, flows into a second pipeline 12 from a water inlet hole in the center of a partition plate 3, flows into a first pipeline 4 along the second pipeline 12 sequentially through an electromagnetic flowmeter 5, a valve 6 and a circulating power pump 7, flows into a water outlet bell mouth 15 from the first pipeline 4, and flows out from the water bell mouth 15; and the water flows into the water outlet box culvert 9 under the action of the outer wall of the upper water guide cone 10, and finally flows into the water outlet channel from the water box culvert 9. If the model pump overflow rate is required to be regulated, only 5 degrees of the electromagnetic flowmeter are required to be read, and the valve 6 is controlled.
The method can effectively solve the problems of high manufacturing cost and difficult measurement and control of the water flow velocity of the pump in the prior hydraulic model test of the double-water-guide-cone axial flow pump, can economically and efficiently complete the hydraulic model pump station test, has simple structure, reliable technology and easy implementation, and the similarity of the water flow inlet and outlet flow states meets the standard requirement of the hydraulic model.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (2)
1. The utility model provides a two water conservancy diversion awl axial flow pump hydraulic model test measurement and control device which characterized in that includes: the device comprises a lower water guide cone (1), an axial flow pump simulation inlet and outlet, a partition plate (3), a first pipeline (4), an electromagnetic flowmeter (5), a valve (6), a circulating power pump (7), an upper water guide cone (10) and a second pipeline (12); the separation plate (3) is arranged in the axial flow pump simulation inlet and outlet, the axial flow pump simulation inlet and outlet is divided into a water inlet bell mouth (2) and a water outlet bell mouth (15), and a water inlet hole is formed in the center of the separation plate (3); the lower water guide cone (1) is arranged at the water inlet bell mouth (2), and the upper water guide cone (10) is arranged at the water outlet bell mouth (15); the vertical section of the first pipeline (4) extends into the water outlet bell mouth (15) from the center through the upper water guide cone (10), part of the vertical section of the second pipeline (12) is wrapped in the vertical section of the first pipeline (4), and a gap is reserved between the two sections; the bottom end of the vertical section of the second pipeline (12) is connected with the water inlet hole, and the water outlet end of the vertical section of the first pipeline (4) is not contacted with the partition plate (3); the electromagnetic flowmeter (5), the valve (6) and the circulating power pump (7) are sequentially arranged on the horizontal section of the second pipeline (12) along the water flow direction in the second pipeline (12), and the horizontal section of the second pipeline (12) is connected with the first pipeline (4) to form a loop;
Further comprises: the test measurement and control platform is internally provided with a water inlet channel and a water outlet channel, a trash rack (11) and a gate (8) are sequentially arranged in the water inlet channel along the water flow direction, a water inlet bell mouth (2) is communicated with the water inlet channel, a water outlet box culvert (9) is arranged on the water inlet side of the water outlet channel, and the water outlet box culvert (9) is positioned in the test measurement and control platform;
the wall of the water tank culvert (9) is connected with the upper cone opening of the upper water guide cone (10), and the outer wall of the vertical section of the first pipeline (4) is connected with the lower cone opening of the upper water guide cone (10).
2. The hydraulic model test measurement and control device for the double water guide cone axial flow pump according to claim 1, wherein the water outlet box culvert (9) is communicated with a water outlet bell mouth (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310238983.1A CN116123107B (en) | 2023-03-14 | 2023-03-14 | Hydraulic model test measurement and control device for double-water-guide cone axial flow pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310238983.1A CN116123107B (en) | 2023-03-14 | 2023-03-14 | Hydraulic model test measurement and control device for double-water-guide cone axial flow pump |
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| CN116123107A CN116123107A (en) | 2023-05-16 |
| CN116123107B true CN116123107B (en) | 2024-06-25 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290179A (en) * | 2008-06-11 | 2008-10-22 | 重庆大学 | Water source heat pump air conditioner system possessing hydraulic turbine pump |
| CN101725547A (en) * | 2008-10-14 | 2010-06-09 | 周占福 | Guide-well desertification energy conservation submerged pump |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPR369901A0 (en) * | 2001-03-13 | 2001-04-12 | Davey Products Pty Ltd | Improved pump |
| CN104895145B (en) * | 2015-06-15 | 2016-06-01 | 扬州大学 | The dustpan-shaped inlet conduit of a kind of hydraulic performance excellence and application method thereof |
| CN107503956B (en) * | 2017-10-19 | 2019-02-01 | 扬州大学 | Axial-flow pump pumping plant separate type flow measurement control method in hydraulic model test |
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- 2023-03-14 CN CN202310238983.1A patent/CN116123107B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101290179A (en) * | 2008-06-11 | 2008-10-22 | 重庆大学 | Water source heat pump air conditioner system possessing hydraulic turbine pump |
| CN101725547A (en) * | 2008-10-14 | 2010-06-09 | 周占福 | Guide-well desertification energy conservation submerged pump |
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| CN116123107A (en) | 2023-05-16 |
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