CN104865045A - Closed-loop control tide flow simulation test device - Google Patents
Closed-loop control tide flow simulation test device Download PDFInfo
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- CN104865045A CN104865045A CN201510332691.XA CN201510332691A CN104865045A CN 104865045 A CN104865045 A CN 104865045A CN 201510332691 A CN201510332691 A CN 201510332691A CN 104865045 A CN104865045 A CN 104865045A
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Abstract
The invention discloses a closed-loop control tide flow simulation test device which comprises a test water channel, a control system, an actuating mechanism and a data acquisition system, wherein a cuboid water channel filled with water is formed in the upper part of the test water channel; a circulation pipeline is arranged at the lower part of the test water channel; a water storage tank is arranged at one end of the test water channel; an internally communicated water flow perpendicular circulation loop is defined by the circulation pipe and the cuboid water channel; the control system is used for controlling such factors as the water level and flow velocity in the cuboid water channel; the actuating mechanism comprises an axial flow water pump, a tail gate controller and a submersible pump; the axial flow water pump is used for controlling the water flow velocity in the cuboid water channel; the tail gate controller is used for controlling the water level in the cuboid water channel; the submersible pump is used for supplementing and circulating water in the cuboid water channel; the data acquisition system is used for acquiring data of the water level and flow velocity in the cuboid water channel, and feeding back the acquired data to the control system. During test, the control system, the actuating mechanism and the data acquisition system work cooperatively to form a complete closed-loop control system; a simulated tide flow is generated in the test water tank, so that a more accurate test platform is provided for a tide simulation physical model test.
Description
Technical field
The present invention relates to ocean dynamical environment test unit, particularly relate to a kind of tide current simulation test device.
Background technology
In ocean exploitation process, the research and development of the new and high technologies such as ocean monitoring technologytechnologies, ocean energy evaluation and exploration technology is the important step promoting that Sustainable Marine develops.
But marine environment is complicated and changeable, the key element such as trend, wave directly acts on marine environmental monitoring instrument and equipment and ocean power generating device, affects safe operation and the reliability of equipment.
Therefore, in marine environmental monitoring instrument and equipment and ocean power generating device development process, indoor physical simulation test is one of important research means, marine environment can be reproduced by indoor marine environment test unit, verify the technical indicator of ocean monitor instrument equipment and ocean power generating device, environmental suitability and reliability, for its technical development provides scientific basis, promote the industrialization process of ocean high and new technology research and development achievement.
The existing indoor marine environment test unit that can produce tide simulation stream is mostly open-loop control system, lacks data feedback link, cannot ensure the accuracy of tide simulation, reduce the confidence level of test findings.Such as, control system is only responsible for controlling water level, do not receive the waterlevel data of acquisition system feedback, because control system exists inevitable error and hysteresis quality, therefore can cause between the tide simulation data of constrained input and produce certain deviation, and this deviation can constantly be amplified when testing for a long time, have a strong impact on the accuracy of test findings.
Summary of the invention
For the marine environment test unit of prior art tide current test unit existing for problem, the present invention releases a kind of novel tide current simulation test device based on closed loop control method, adopt the water movement in axial flow pump driving tank, tank water level is controlled by tail-gate controller, submersible pump is utilized to carry out the supplementary and circulation of water in tank, control system and acquisition system is adopted three to be closely linked, form the closed-loop control system of each several part collaborative work, form the lab simulation tide current test unit centered by experimental tank, significantly improve the accuracy of tide current simulation.
The tide current simulation test device of a kind of closed-loop control involved in the present invention comprises experimental tank, control system, topworks and acquisition system.Set-up of control system at experimental tank outward and connect topworks and acquisition system, topworks is arranged in experimental tank, acquisition system is connected with control system, the limnimeter of acquisition system and current meter are placed in water level in experimental tank water acquisition test tank and flow speed data, in real time by data feedback to control system.
Described experimental tank top is the rectangular parallelepiped tank of inner water-filling, and bottom is circulating line, and one end is water storage box, and circulating line and top rectangular parallelepiped tank form the inner current vertical circulation loop be communicated with.Water storage box top is communicated with rectangular parallelepiped tank one end, and the centre of connectivity part is cut off by the tail-gate controller of topworks.
Rectangular parallelepiped tank two ends are reinforced concrete structure, and both sides are made up of steel bar framework, are provided with tempered glass between framework, are convenient to observe the process of the test in rectangular parallelepiped tank.Rectangular parallelepiped tank arranges water inlet and water delivering orifice bottom two ends, and rectangular parallelepiped tank is communicated with circulating line below with water delivering orifice by water inlet.
Circulating line is closed conduit, step-by-step design, and every section of two ends are provided with flange, and flange bolt connects, junction packing matcrial.Circulating line is supported by base, and circulating line two ends form bend pipe upwards, and the bend pipe at two ends is communicated with water delivering orifice with the water inlet bottom rectangular parallelepiped tank two ends respectively, forms the inner current vertical circulation loop be communicated with.
Water storage box is reinforced concrete structure, is arranged on rectangular parallelepiped tank water inlet one end, and water storage box top is communicated with the tail-gate controller of rectangular parallelepiped tank by topworks.
Described control system comprises computer for controlling and frequency converter, and computer for controlling connects frequency converter.Frequency converter connects the drive motor of topworks respectively, and computer for controlling is connected with the collecting computer of acquisition system, realizes closed-loop control.Computer for controlling connects frequency converter, the drive motor of frequency converter topworks.Computer for controlling receives the feedback data of acquisition system simultaneously, calculates data error according to feedback data, and change control parameter sends to frequency converter automatically, and frequency converter controls topworks's work according to amended controling parameters.
Described topworks comprises axial flow pump, tail-gate controller and submersible pump, the frequency converter coupling shaft flowing water pump motor of control system, tail-gate controller motor and motor for submerged pump.
Axial flow pump is arranged on the outside of the circulating line below rectangular parallelepiped sink outlet, is connected with circulating line by flange, the rotating speed of Frequency Converter Control axial flow pump motor and turning to, and produces the current of motion.
Tail-gate controller is arranged between rectangular parallelepiped tank and water storage box, is arranged on the reinforced concrete structure of rectangular parallelepiped tank end, by the aperture of Serve Motor Control tail-gate, to control the spill-out of water in rectangular parallelepiped tank.The open range of tail-gate controller is 0-90 °, by controlling the water level in the different aperture control rectangular parallelepiped tank of tail-gate.When tail-gate aperture is 0 °, the water of rectangular parallelepiped tank cannot enter into water storage box by tail-gate; When tail-gate aperture is 90 °, the water of rectangular parallelepiped tank enters into water storage box by with maximum flow.
Submersible pump is arranged on the top of water storage box, is positioned near rectangular parallelepiped tank water inlet, the water in water storage box ceaselessly can be transported in rectangular parallelepiped tank, realizes the supplementary and circulation of water in rectangular parallelepiped tank.
Described acquisition system comprises limnimeter, current meter and collecting computer, and limnimeter, current meter to be arranged in the rectangular parallelepiped tank water of experimental tank and to be connected with collecting computer, and collecting computer is connected with computer for controlling.During test, first collecting computer receives the data of limnimeter and the current meter measured, and then data are fed back to computer for controlling in real time.
When tide current simulation test, the first parameter such as designated water level and flow velocity in the computing machine of control system, frequency converter determines the respective motor speed of topworks and direction according to setup parameter, then powers up starter motor.Axial flow pump drives water sport, makes water form the flowing in vertical circulation loop along rectangular parallelepiped tank and circulating line according to coutroi velocity parameter.The water of rectangular parallelepiped tank, according to controlling water level parameter change tail-gate aperture, is discharged in water storage box, realizes SEA LEVEL VARIATION different in rectangular parallelepiped tank by tail-gate controller.Water in water storage box is continuously transported in rectangular parallelepiped tank by controling parameters by submersible pump, realizes the circulation of water.
In process of the test, limnimeter measures the water level in rectangular parallelepiped tank, the flow velocity of water in rectangular parallelepiped tank measured by current meter, measure numerical value input collecting computer, real-time for data is sent to computer for controlling by collecting computer, computer for controlling calculates data deviation according to feedback data, and change control parameter sends to frequency converter automatically, and frequency converter controls topworks's work according to amended controling parameters.In whole process of the test, control system, topworks and acquisition system collaborative work, define complete closed-loop control system, improves the accuracy of tide current simulation.
The tide current simulation test device of closed-loop control involved in the present invention adopts axial flow pump to drive water movement, by tail-gate control gear controlling water level, submersible pump is utilized to carry out supplementing of water and circulation, control system and acquisition system is adopted three to be connected, form the closed-loop control system of each several part collaborative work, more accurate tide simulation stream can be produced in experimental tank, carry out dynamic envlronmental test for marine environmental monitoring instrument and equipment and ocean power generating device and provide reliable technological means.
Accompanying drawing explanation
Fig. 1 is the structural representation of the tide current simulation test device of a kind of closed-loop control that the present invention relates to.
Description of symbols in figure:
1. experimental tank 2. tail-gate controller
3. submersible pump 4. water inlet
5. water 6. rectangular parallelepiped tank
7. limnimeter 8. current meter
9. water delivering orifice 10. axial flow pump
11. circulating line 12. bases
13. water storage boxes
Embodiment
By reference to the accompanying drawings technical scheme of the present invention is further described.As shown in Figure 1, the tide current simulation test device of a kind of closed-loop control involved in the present invention comprises experimental tank 1, control system, topworks and acquisition system.Set-up of control system is outer and connect topworks and acquisition system at experimental tank 1, topworks is arranged in experimental tank 1, acquisition system is connected with control system, limnimeter 7 and the current meter 8 of acquisition system are placed in experimental tank 1 water and water level in acquisition test tank 1 and flow speed data, in real time by data feedback to control system.
Described experimental tank 1 top is the rectangular parallelepiped tank 6 of inner water-filling, and bottom is circulating line 11, and one end is water storage box 13, and circulating line 11 and top rectangular parallelepiped tank 6 form the inner current vertical circulation loop be communicated with.Water storage box 13 top is communicated with rectangular parallelepiped tank 6 one end, and the centre of connectivity part is cut off by the tail-gate controller 2 of topworks.
Rectangular parallelepiped tank 6 two ends are reinforced concrete structure, and both sides are made up of steel bar framework, are provided with tempered glass between framework, are convenient to observe the process of the test in rectangular parallelepiped tank 6.Arrange water inlet 4 and water delivering orifice 9 bottom rectangular parallelepiped tank 6 two ends, rectangular parallelepiped tank 6 is communicated with circulating line 11 below with water delivering orifice 9 by water inlet 4.
Circulating line 11 is closed conduit, step-by-step design, and every section of two ends are provided with flange, and flange bolt connects, junction packing matcrial.Circulating line 11 is supported by base 12, and circulating line 11 two ends form bend pipe upwards, and the bend pipe at two ends is communicated with water delivering orifice 9 with the water inlet 4 bottom rectangular parallelepiped tank 6 two ends respectively, forms the inner current vertical circulation loop be communicated with.
Water storage box 13 is reinforced concrete structure, is arranged on rectangular parallelepiped tank 6 water inlet 4 one end, and water storage box 13 top is communicated with the tail-gate controller 2 of rectangular parallelepiped tank 6 by topworks.
Described control system comprises computer for controlling and frequency converter, and computer for controlling connects frequency converter.Frequency converter connects the drive motor of topworks respectively, and computer for controlling is connected with the collecting computer of acquisition system, realizes closed-loop control.Computer for controlling connects frequency converter, the drive motor of frequency converter topworks.Computer for controlling receives the feedback data of acquisition system simultaneously, calculates data error according to feedback data, and change control parameter sends to frequency converter automatically, and frequency converter controls topworks's work according to amended controling parameters.
Described topworks comprises axial flow pump 10, tail-gate controller 2 and submersible pump 3, and the frequency converter of control system connects axial flow pump 10 motor, tail-gate controller 2 motor and submersible pump 3 motor.
Axial flow pump 10 is arranged on the outside of the circulating line 11 below rectangular parallelepiped tank 6 water delivering orifice 9, is connected with circulating line 11 by flange, the rotating speed of Frequency Converter Control axial flow pump 10 motor and turning to, and produces the current of motion.
Tail-gate controller 2 is arranged between the rectangular parallelepiped tank 6 of experimental tank 1 and water storage box 13, is arranged on the reinforced concrete structure of rectangular parallelepiped tank 6 end, by the aperture of Serve Motor Control tail-gate, to control the spill-out of water in rectangular parallelepiped tank 6.The open range of tail-gate controller 2 is 0-90 °, by controlling the water level in the different aperture control rectangular parallelepiped tank 6 of tail-gate.When tail-gate aperture is 0 °, the water of rectangular parallelepiped tank 6 cannot enter into water storage box 13 by tail-gate; When tail-gate aperture is 90 °, the water of rectangular parallelepiped tank 6 enters into water storage box 13 by with maximum flow.
Submersible pump 3 is arranged on the top of water storage box 13, is positioned near rectangular parallelepiped tank 6 water inlet 4, the water in water storage box 13 ceaselessly can be transported in rectangular parallelepiped tank 6, realizes the supplementary and circulation of water in rectangular parallelepiped tank 6.
Described acquisition system comprises limnimeter 7, current meter 8 and collecting computer, and limnimeter 7, current meter 8 to be arranged in rectangular parallelepiped tank 6 water of experimental tank 1 and to be connected with collecting computer, and collecting computer is connected with computer for controlling.During test, first collecting computer receives the data of the limnimeter 7 and current meter 8 measured, and then data are fed back to computer for controlling in real time.
When tide current simulation test, the first parameter such as designated water level and flow velocity in the computing machine of control system, frequency converter determines the respective motor speed of topworks and direction according to setup parameter, then powers up starter motor.Axial flow pump 10 drives water sport, makes water form the flowing in vertical circulation loop along rectangular parallelepiped tank 6 and circulating line 11 according to coutroi velocity parameter.The water of rectangular parallelepiped tank 6, according to controlling water level parameter change tail-gate aperture, is discharged in water storage box 13, realizes SEA LEVEL VARIATION different in rectangular parallelepiped tank 6 by tail-gate controller 2.Water in water storage box 13 is continuously transported in rectangular parallelepiped tank 6 by controling parameters by submersible pump 3, realizes the circulation of water.
In process of the test, the flow velocity that limnimeter 7 measures water level in rectangular parallelepiped tank 6, water in rectangular parallelepiped tank 6 measured by current meter 8, measure numerical value input collecting computer, real-time for data is sent to computer for controlling by collecting computer, computer for controlling calculates data deviation according to feedback data, and change control parameter sends to frequency converter automatically, frequency converter controls topworks's work according to amended controling parameters.In whole process of the test, control system, topworks and acquisition system collaborative work, define complete closed-loop control system, improves the accuracy of tide current simulation.
Claims (7)
1. the tide current simulation test device of a closed-loop control, it is characterized in that: comprise experimental tank, control system, topworks and acquisition system, set-up of control system at experimental tank outward and connect topworks and acquisition system, topworks is arranged in experimental tank, acquisition system is connected with control system, the limnimeter of acquisition system and current meter are placed in water level in experimental tank water acquisition test tank and flow speed data, in real time by data feedback to control system;
Described experimental tank top is the rectangular parallelepiped tank of inner water-filling, and bottom is circulating line, and one end is water storage box, and circulating line and top rectangular parallelepiped tank form the inner current vertical circulation loop be communicated with; Water storage box top is communicated with rectangular parallelepiped tank one end, and the centre of connectivity part is cut off by the tail-gate controller of topworks; Rectangular parallelepiped tank arranges water inlet and water delivering orifice bottom two ends, and rectangular parallelepiped tank is communicated with circulating line below with water delivering orifice by water inlet, forms the inner current vertical circulation loop be communicated with;
Described control system comprises computer for controlling and frequency converter, and computer for controlling connects frequency converter, and frequency converter connects the drive motor of topworks, and computer for controlling is connected with collecting computer simultaneously, realizes closed-loop control;
Described topworks comprises axial flow pump, tail-gate controller and submersible pump, the frequency converter coupling shaft flowing water pump motor of control system, tail-gate controller motor and motor for submerged pump;
Described acquisition system comprises limnimeter, current meter and collecting computer, and limnimeter and current meter to be arranged in the water in rectangular parallelepiped tank and to be connected with collecting computer, and collecting computer is connected with computer for controlling.
2. the tide current simulation test device of a kind of closed-loop control according to claim 1, it is characterized in that: the rectangular parallelepiped tank two ends of described experimental tank are reinforced concrete structure, both sides are made up of steel bar framework, between framework, tempered glass is installed, is convenient to observe the process of the test in rectangular parallelepiped tank.
3. the tide current simulation test device of a kind of closed-loop control according to claim 1, is characterized in that: described circulating line is closed conduit, step-by-step design, and every section of two ends are provided with flange, and flange bolt connects, junction packing matcrial; Circulating line is supported by base, and circulating line two ends form bend pipe upwards, and the bend pipe at two ends is communicated with water delivering orifice with the water inlet bottom rectangular parallelepiped tank two ends respectively.
4. the tide current simulation test device of a kind of closed-loop control according to claim 1, it is characterized in that: described water storage box is reinforced concrete structure, be arranged on rectangular parallelepiped tank water inlet one end of experimental tank, water storage box top is communicated with the tail-gate controller of rectangular parallelepiped tank by topworks.
5. the tide current simulation test device of a kind of closed-loop control according to claim 4, it is characterized in that: described tail-gate controller is arranged between rectangular parallelepiped tank and water storage box, be arranged on the reinforced concrete structure of rectangular parallelepiped tank end, by the aperture of Serve Motor Control tail-gate, to control the water level in the spill-out of water in rectangular parallelepiped tank and rectangular parallelepiped tank; The open range of described tail-gate controller is 0-90 °.
6. the tide current simulation test device of a kind of closed-loop control according to claim 1, it is characterized in that: the outside of circulating line below the rectangular parallelepiped sink outlet that described axial flow pump is arranged on experimental tank, be connected with circulating line by flange, the rotating speed of Frequency Converter Control pump motor and turning to, produces the current of motion.
7. the tide current simulation test device of a kind of closed-loop control according to claim 4, it is characterized in that: described submersible pump is arranged on the top of water storage box, near the rectangular parallelepiped tank water inlet being positioned at experimental tank, water in water storage box ceaselessly can be transported in rectangular parallelepiped tank, realize the supplementary and circulation of water in rectangular parallelepiped tank.
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| CN201510332691.XA CN104865045A (en) | 2015-06-16 | 2015-06-16 | Closed-loop control tide flow simulation test device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756011A (en) * | 2016-04-22 | 2016-07-13 | 浙江省水利河口研究院 | Tidal bore tide head generating device for indoor physical model experiments |
| CN107421716A (en) * | 2017-09-07 | 2017-12-01 | 交通运输部天津水运工程科学研究所 | Wave physical experiments wave simulator free of discontinuities and method under SEA LEVEL VARIATION |
| CN108152004A (en) * | 2018-01-18 | 2018-06-12 | 浙江省水利河口研究院 | A kind of more sink linkage water transfer systems |
| CN110132540A (en) * | 2019-06-20 | 2019-08-16 | 国家海洋技术中心 | A kind of tidal current energy generating equipment tail flow field measuring system and method |
| CN111256948A (en) * | 2020-03-03 | 2020-06-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Three-dimensional coupling measurement and control device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894488A (en) * | 1994-09-28 | 1996-04-12 | Mitsubishi Heavy Ind Ltd | Two layer flow tester |
| CN101782770A (en) * | 2010-03-16 | 2010-07-21 | 上海河口海岸科学研究中心 | Distributed control system and control method for river work physical model trend simulation |
| CN201679244U (en) * | 2010-03-18 | 2010-12-22 | 鹤壁职业技术学院机电工程学院 | Solar electric bicycle charging shed |
| CN103278304A (en) * | 2013-06-17 | 2013-09-04 | 清华大学 | Maritime work vibrating table device |
| CN204199236U (en) * | 2014-09-26 | 2015-03-11 | 河海大学 | The device that the migration of tide simulation reversing current pollution of river thing and salt solution trace back |
-
2015
- 2015-06-16 CN CN201510332691.XA patent/CN104865045A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0894488A (en) * | 1994-09-28 | 1996-04-12 | Mitsubishi Heavy Ind Ltd | Two layer flow tester |
| CN101782770A (en) * | 2010-03-16 | 2010-07-21 | 上海河口海岸科学研究中心 | Distributed control system and control method for river work physical model trend simulation |
| CN201679244U (en) * | 2010-03-18 | 2010-12-22 | 鹤壁职业技术学院机电工程学院 | Solar electric bicycle charging shed |
| CN103278304A (en) * | 2013-06-17 | 2013-09-04 | 清华大学 | Maritime work vibrating table device |
| CN204199236U (en) * | 2014-09-26 | 2015-03-11 | 河海大学 | The device that the migration of tide simulation reversing current pollution of river thing and salt solution trace back |
Non-Patent Citations (1)
| Title |
|---|
| 张小飞: "基于PAC模块的潮汐模拟计算机控制系统的研制", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756011A (en) * | 2016-04-22 | 2016-07-13 | 浙江省水利河口研究院 | Tidal bore tide head generating device for indoor physical model experiments |
| CN107421716A (en) * | 2017-09-07 | 2017-12-01 | 交通运输部天津水运工程科学研究所 | Wave physical experiments wave simulator free of discontinuities and method under SEA LEVEL VARIATION |
| CN107421716B (en) * | 2017-09-07 | 2023-05-23 | 交通运输部天津水运工程科学研究所 | Uninterrupted wave generation device and method for wave physical model test under water level change |
| CN108152004A (en) * | 2018-01-18 | 2018-06-12 | 浙江省水利河口研究院 | A kind of more sink linkage water transfer systems |
| CN110132540A (en) * | 2019-06-20 | 2019-08-16 | 国家海洋技术中心 | A kind of tidal current energy generating equipment tail flow field measuring system and method |
| CN111256948A (en) * | 2020-03-03 | 2020-06-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Three-dimensional coupling measurement and control device and method |
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Application publication date: 20150826 |