CN101561344B - Experimental water tank without tail-gate for hydraulics and mud and sand dynamics - Google Patents

Experimental water tank without tail-gate for hydraulics and mud and sand dynamics Download PDF

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Publication number
CN101561344B
CN101561344B CN 200910062236 CN200910062236A CN101561344B CN 101561344 B CN101561344 B CN 101561344B CN 200910062236 CN200910062236 CN 200910062236 CN 200910062236 A CN200910062236 A CN 200910062236A CN 101561344 B CN101561344 B CN 101561344B
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water
tail
tank
water tank
gate
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CN101561344A (en
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许明
胡向阳
魏国远
马志敏
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Changjiang River Scientific Research Institute Changjiang Water Resources Commission
Changjiang Waterway Planning Design and Research Institute
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Changjiang River Scientific Research Institute Changjiang Water Resources Commission
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Abstract

The invention provides an experimental water tank without a tail-gate for hydraulics and mud and sand dynamics. The tank is a closed and continuous minimum circulating water supply system; the tail ofan experimental section of the water tank is not provided with the tail-gate with the function of adjusting water level and other mechanisms; the closed and continuous minimum circulating water suppl y system means that when the states of a water pump, a valve and other adjustable devices are invariable, changes of total water amount of the system directly impact the water level and the flow speedof the test section of the water tank. The experimental water tank solves the problem that various component parts of the prior experimental water tank are mutually independent and irrelevant. When a water tank experiment is carried out, a user often finds the defects that the control is inconvenient, and the precision of the water tank experiment is hardly further improved. The experimental wate r tank without the tail-gate adopts the designing idea of minimum circulating system, has small total water amount of the system, and can reduce drain and waste.

Description

Be used for the dynamic (dynamical) no tail-gate experimental tank of hydraulics and silt
Technical field
The present invention relates to a kind of hydraulics and dynamic (dynamical) no tail-gate experimental tank of silt of being used for.
Background technology
Experimental tank is one of important tests method facility of conducting a research of Hydraulics and River Dynamics, the history of the existing last 100 years of experimental tank.The quality of achievement of flume test research and the control accuracy and the measuring accuracy of experimental tank are closely related, so the instrument and equipment of the control mode of experimental tank and control accuracy and measurement is also all in constantly improving and improving.The related instrument and equipment in experimental tank control aspect has centrifugal water pump, electromagnetic flowmeter, electric control valve, automatic water level to take into account sediment concentration measuring and opertaing device etc. at present.The related instrument and equipment in measurement aspect is relevant with research contents, but main fluid-velocity survey, level measuring, sediment concentration measuring, topographical surveying or the like is arranged.Improve the test mass of flume test, the control accuracy that improves experimental tank is very important.
Present flume test can only be carried out the test of simple function, and tank control both bothered, and control accuracy is not high yet.Mainly be made up of water supply part and flow control part and water level control section existing not containing for the experimental tank of husky system.Water supply part comprises water supply pump, service basin, backwater canal etc.Flow control partly comprises electromagnetic flowmeter, electric control valve, supporting control and Displaying Meter and corresponding flow control software.The water level control section comprises needle water level gauge, automatic gauge, electronic tail-gate and corresponding water level Control Software.The control order normally starts water pump earlier, regulates flow then, and the stable back of flow adjustment is by regulating tail-gate control test water level.The CONTROL PROCESS flow process is: (vacuum pump →) centrifugal water pump → (water supply) → electromagnetic flowmeter → electrically operated valve → (control tank flow) → tail-gate water level gauge → tail-gate → (control tank water level) → backwater canal → service basin, increase the husky system of corresponding confession during the research rule of sediment movement again.Therefore each ingredient is separate, and is irrelevant mutually.When carrying out flume test, the user of service often feels control inconvenience, and the precision of flume test also is difficult to further raising (as shown in Figure 3, Figure 4).
Summary of the invention
The objective of the invention is to overcome above-mentioned existing disadvantages of background technology part, and the no tail-gate experimental tank of a kind of hydraulics and river dynamics is provided.It adopts new control flow to replace present existing CONTROL PROCESS flow process, realizes the multifunction test tank of perfect in shape and function, easy to operate, computer controlled automatic with the method for whole control.
Be used for the dynamic (dynamical) no tail-gate experimental tank of hydraulics and silt, it is a minimal circulation water system that sealing is continuous, the flume test segment trailer is not equipped with the mechanisms such as tail-gate that regulate the water level effect, seal continuous minimal circulation system and be meant that when adjustable device states such as water pump, valve are constant the variation of system's Total Water will directly influence flume test section water level and flow velocity.
The objective of the invention is to reach: be used for the dynamic (dynamical) no tail-gate experimental tank of hydraulics and silt by following measure, it is characterized in that it comprises tank, there is intake-outlet at two ends at tank, there is transition section to communicate with intake-outlet, trunk line is arranged between transition section, reversible axial flow pump (water pump a kind of) is installed at interval on the described trunk line, electric control valve and electromagnetic flowmeter, the motor that drives reversible axial flow pump is controlled by variable-frequence governor, the electric control valve of described trunk line and electromagnetic flowmeter section are other to be equipped with small-bore bypass channel, on the described small-bore bypass channel electric control valve and electromagnetic flowmeter is installed.Water pump can be unidirectional water pump, also can be two way water pump, can be axial flow pump, also can be in-line pump etc.
In technique scheme, the emptying valve is installed on described intake-outlet.
In technique scheme, be arranged in parallel circulating line at the input port and the delivery outlet two ends of described reversible axial flow pump, electric control valve is installed on circulating line.
1., the present invention adopts minimal circulation system design thought, can accomplish environmental protection the no tail-gate experimental tank that the present invention is used for hydraulics and river dynamics has following advantage:.Because when carrying out the research of river dynamics aspect, often carry out the test of various model sasnds, the model sasnd of unlike material may interact, often finish a kind of model sasnd of material, just need change whole water bodys of system, therefore the Total Body Water of system is little, just can reduce discharging, reduces waste.2., the present invention adopts the minimal circulation system, can accomplish energy-conservation.Can the hoisting depth that water body is required reduce to minimum, water pump driving water sports does not have extra energy consumption except the resistance loss of water transport channel.Therefore tank of the present invention is than more than the energy-conservation several times of the experimental tank of existing same specification.This is embodied in two aspects, and one is the general power aspect, such as, maximum flow is 2400m 3During/h, conventional design will be 800m with 3 flows 3/ h, lift are 12 meters-15 meters, and power is the centrifugal pump of 45kw-55kw, build a pump house and service basin, and tank that the present invention builds is 2400m with 1 flow only 3/ h, lift are 2.8 meters-3.3 meters, and power is the axial flow pump of 37-45kw.Another is the control method aspect, and present conventional design is by foregoing water supply part and the flow control part is independent separately considers that flow control does not partly have to consider to reduce the measure of the water pump loss of flood peak.Make the required lift of water pump strengthen, cause the additional energy loss.3., experimental tank of the present invention can not build the water supply pump house separately, cancellation service basin and backwater canal can reduce the construction project expense of experimental tank.
Description of drawings
Fig. 1 is the side structure cut-open view of experimental tank of the present invention.
Fig. 2 is the structure vertical view of experimental tank of the present invention.
Fig. 3 is the side structure cut-open view of existing experimental tank.
Fig. 4 is the structure vertical view of existing experimental tank.
Among the figure: 1. reversible axial flow pump, 2. electric control valve, 3. electromagnetic flowmeter, 4. small-bore bypass channel, 5. circulating line, 6. trunk line, 7. emptying valve (or claim exhaust-valve), 8. tank, 9. intake-outlet, 10. transition section, 11. motor, 12. water pumps, 13. service basins, 14. the backwater water channel, 15. tail-gates.Arrow method representation water (flow) direction among the figure.
Embodiment
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not constitute limitation of the invention, only do for example.Simultaneously by illustrating that advantage of the present invention will become clear more and understanding easily.
Consult Fig. 1, Fig. 2 as can be known: the present invention is used for hydraulics and the dynamic (dynamical) no tail-gate experimental tank of silt, it comprises tank 8, at the two ends of tank 8 intake-outlet 9 is arranged, (shape of intake-outlet 9 is not limited to the circle in this accompanying drawing to have transition section 10 to communicate with intake-outlet 9, also should comprise rectangle etc.), trunk line 6 is arranged between transition section 10, reversible axial flow pump 1, motorized adjustment pump 2 and electromagnetic flowmeter 3 are installed on the described trunk line 6 at interval.The motor 11 that drives reversible axial flow pump 1 is equipped with small-bore bypass channel 4 by variable-frequence governor control on trunk line 6, electric control valve 2 and electromagnetic flowmeter 3 (water yield of scalable trunk line and flow velocity) are installed on the small-bore bypass channel 4.Emptying valve 7 (being mainly used in the water in the emptying tank) is being installed on the intake-outlet 9.The input port of reversible axial flow pump and delivery outlet two ends have been arranged in parallel circulating line 5, and electric control valve 2 (having the current of adjusting that effect is arranged) is installed on circulating line 5.
The present invention is used for hydraulics and the dynamic (dynamical) no tail-gate experimental tank of silt has following characteristics: adopt the continuous minimal circulation system design of sealing 1.; 2. bi-directional symmetrical; 3. between reversible axial flow pump is imported and exported, a circulation passage is set; 4. on the next door of main flowmeter and valve passage, a small-bore bypass channel (as shown in Figure 1 and Figure 2) that small-bore flowmeter and valve are arranged is set.
Seal continuous minimal circulation system and be meant that when adjustable device states such as water pump, valve are constant the variation of system's Total Water will directly influence flume test section water level and flow velocity.Water pump is imported and exported the circulation passage that two ends are arranged in parallel and is meant when Control Flow, can regulate that water pump is exerted oneself and the aperture size of regulating the circulation passage valve reaches the purpose of Control Flow by frequency converter.
The present invention is a sealing continuous circulation system, original CONTROL PROCESS flow process is changed, simple saying is exactly earlier to the tank water filling of sealing, after reaching the water level of test, stop water filling, at this moment the water yield in the closed system is invariable, be provided with a reversible axial flow pump between the unicom pipeline at tank two ends, when axial flow pump driving water body was mobile towards a direction, the water body in the tank also began to flow towards a direction, and the water body of total system participates in circulating.Owing to adopted reversible axial flow pump, when design, considered symmetry, make this experimental tank have and can carry out the multiple function that steady flow, unsteady flow, way flow, bidirectional flow, clear water and muddy water are tested.

Claims (3)

1. be used for the dynamic (dynamical) no tail-gate experimental tank of hydraulics and silt, it is characterized in that it comprises tank (8), at the two ends of tank (8) intake-outlet (9) is arranged, there is transition section (10) to communicate with intake-outlet (9), trunk line (6) is arranged between transition section (10), described trunk line (6) is gone up reversible axial flow pump (1) is installed at interval, electric control valve (2) and electromagnetic flowmeter (3), the motor (11) that drives reversible axial flow pump (1) is controlled by variable-frequence governor, the electric control valve of described trunk line (6) and electromagnetic flowmeter section are other to be equipped with small-bore bypass channel (4), and electric control valve (2) and electromagnetic flowmeter (3) are installed on the described small-bore bypass channel (4).
2. hydraulics and the dynamic (dynamical) no tail-gate experimental tank of silt of being used for according to claim 1 is characterized in that being equipped with emptying valve (7) on described intake-outlet (9).
3. hydraulics and the dynamic (dynamical) no tail-gate experimental tank of silt of being used for according to claim 1, it is characterized in that being arranged in parallel circulating line (5), electric control valve (2) is installed on circulating line (5) at the input port and the delivery outlet two ends of described reversible axial flow pump (1).
CN 200910062236 2009-05-26 2009-05-26 Experimental water tank without tail-gate for hydraulics and mud and sand dynamics Active CN101561344B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104776977A (en) * 2015-04-28 2015-07-15 中国海洋大学 Coastal engineering silt physical model test bottom bed dynamic and comprehensive observation method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101561345B (en) * 2009-05-26 2011-01-05 长江水利委员会长江科学院 Bidirectional experimental water tank for hydraulics and mud and sand dynamics
CN102478460B (en) * 2010-11-23 2014-07-16 浙江派尼尔机电有限公司 Test device and system of engine for boat
CN102331335B (en) * 2011-07-15 2013-03-06 曹彭强 Sand launder test apparatus of first type boundary of underground water
CN102507135B (en) * 2011-10-19 2014-09-24 河海大学 Experimental tank system of riparian zone
CN103197696B (en) * 2013-04-08 2015-05-13 武汉大学 Control method of preventing stern door of river model from fast perturbation
CN104142223A (en) * 2013-05-10 2014-11-12 华北水利水电学院 Small-scale solidified cohesive sediment incipient motion measuring system
CN109632256B (en) * 2019-01-14 2020-06-02 中国科学院、水利部成都山地灾害与环境研究所 Design method and application of special-shaped section test water tank

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CN104776977A (en) * 2015-04-28 2015-07-15 中国海洋大学 Coastal engineering silt physical model test bottom bed dynamic and comprehensive observation method

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