CN203941082U - A kind of all automatic measurement and control test structure - Google Patents
A kind of all automatic measurement and control test structure Download PDFInfo
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- CN203941082U CN203941082U CN201320475867.3U CN201320475867U CN203941082U CN 203941082 U CN203941082 U CN 203941082U CN 201320475867 U CN201320475867 U CN 201320475867U CN 203941082 U CN203941082 U CN 203941082U
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- automatic measurement
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Abstract
The utility model provides a kind of all automatic measurement and control test structure, on indoor Horizon, be provided with a horizontal support, on horizontal support, be provided with driving mechanism, on driving mechanism, be provided with rotatable annular tank, in annular water tank, be evenly equipped with some stressed collars, stressed collar connects suspension rod rotary system, and suspension rod rotary system connects a portal frame.Device described in the utility model not only can, for the research of current, sediment dynamics characteristic, also can be applicable to the correlation tests such as water quality, water environment, ecology, fishery, boats and ships, heat transfer, and the accuracy of measuring and the good stability of experiment.
Description
Technical field
The utility model belongs to water conservancy, water transport, environmental engineering mechanism Journal of Sex Research technical field, specifically relates to all automatic measurement and the control test structure of fine sediment physics dynamic process and kinetic characteristic.
Background technology
The motion process of coarse sediment in water more easily differentiated, and is Observable without particular device; But for fine grained, its content in water can significantly change turbidity and the identification of water body, the more important thing is, fine grained athletic meeting shows group, randomness and the environmental sensitivity of degree varies, and its dynamic mechanism and motion process are very complicated.Forms of motion, motion process and the kinematic behaviors etc. of fine sediment in water are research objects basic, the most most crucial in silt theoretical system, and its correlation parameter is that sign sediment movement feature and topography and geomorphology develop most important index.Up to the present, for fine sediment the description of the physical state such as the Related Mechanism in water, micro-dynamic process still without unification, wide adaptability, formula and parameter that theoretical property is strong.Therefore, at home and abroad on different documents, can see a large amount of, taking shop experiment, field observation and theoretical derivation etc. as basic kinetic parameter value or experimental formula.Different formula form difference is huge; Add the region of silt research subject correlation parameter and empirical stronger, therefore in different engineering practices, selecting a suitable sediment dynamics mathematic(al) parameter is a very perplexing thing, the most appropriate method is to adopt a kind of suitable indoor set, selects suitable test condition to provide correlation parameter.
For a long time, main dependence field observation or straight tank shop experiment are studied its relevant basic theories, but because fine sediment particle is little, settling process is slow, carry out water flow mud-sand test in testing laboratory time, the time that completes whole outstanding deposition process is longer, therefore tank that just need to be very long, common straight trough is difficult to meet required distance conventionally, and can bring the problem of water pump stirring destruction floc sedimentation and water flow structure with straight trough research fine sediment.
Annular water tank is to be known as in recent decades most suitable fine sediment dynamic test equipment both at home and abroad, annular water tank is actually the straight tank of length of having simulated endless from theory, its main advantage is: (1) does not need water recovery apparatus and energy-dissipating installation, do not destroy the coagulation of silt, silt can be under the state similar to field condition deposition, starting and defeated moving; (2) easy to operate, the test depth of water, sediment concentration, water velocity can regulate easily; (3) the organic glass cell body property transformed is strong, can adapt to dissimilar various test conditions and requirement.
Study silt micro kinetics characteristic for utilizing by annular water tank, at home and abroad applied for many years.Comprehensive literature, correlation parameter all has specific applicable elements and the scope of application, can not simply qualitative its correctness, because the difference of researcher's research purpose, Consideration, various conclusions all have very strong applicability to different situations.Therefore, can not directly apply in specific engineering practice and go without analyse, especially in the waters of those complex environments.
In addition, the design of annular water tank test unit in the past also has problems or weak point at the aspect such as control system, water sampling equipment of flow rate of water flow measurement, sediment concentration measuring, major trough body.Measurement and control instrument develop rapidly now, reliability, precision and the measurement range measured and control progressively improve, therefore be extremely necessary to utilize up-to-date measuring and controlling equipment to redesign out full-automatic, a high-precision annular water tank test device systematic, for the research of fine sediment dynamic process and Related Mechanism thereof is offered help.
In the construction of annular water tank decades and in service, three relatively the annular water tank of cores to make the difficult points that exist as follows.
(1) how by the control of annular water tank integral manufacturing error, and the selection of optimized rotating speed ratio reduces Secondary Flow;
(2) reducing under disturbed condition as far as possible, how to carry advanced three-D high frequency flow measuring device and acoustics optics and survey husky equipment, improving measuring accuracy;
(3) how to ensure the repeatability of accuracy, stability and test controlled.
Utility model content
Technical problem to be solved in the utility model is, overcome the problem that prior art exists, a kind of all automatic measurement and control test structure are provided, the tank of this structure not only can, for the research of current, sediment dynamics characteristic, also can be applicable to the correlation tests such as water quality, water environment, ecology, fishery, boats and ships, heat transfer.
Such in order to address the above problem the technical solution of the utility model:
A kind of all automatic measurement and control test structure, on indoor Horizon, be provided with a horizontal support, on horizontal support, be provided with driving mechanism, on driving mechanism, be provided with rotatable annular tank, in annular water tank, be evenly equipped with some stressed collars, stressed collar connects suspension rod rotary system, and suspension rod rotary system connects a portal frame; On described horizontal support, have a central shaft, central shaft connects the upper end of portal frame through annular water tank; Described rotary system, comprises swivel mount, and swivel mount arranges around central shaft, and swivel mount top is provided with rotary drive mechanism and lift drive mechanism, and the lower end of swivel mount connects stressed collar.
The span of described portal frame is 3.900 meters, and the height of portal frame is 2.265 meters.
Described stressed collar is 12.
Described stressed collar is that high strength acrylic is built the disposable seamless hot pressing global formation of transparent panel and made.
On described swivel mount, be provided with lifting sensor.
Described annular water tank external radius is 1.095m, and inside radius is 0.920m, and tank width is 0.160m, wall thickness 0.015m, and tank maximum height is 0.5m, the radius of turn R=1.000m of tank.
Described annular water tank is that high strength acrylic is built the disposable seamless hot pressing global formation of transparent panel and made.
The rotary drive mechanism that the driving mechanism of described driving annular water tank and swivel mount top arrange is for there being brush DC servo motor, described in to have brush DC servo motor be speed measuring motor, have in the DC servo motor of brush and be connected with servo governor.
Described experiment structure is connected with an annular water tank control system based on output power.
In described annular water tank, be provided with: acoustics point type current meter and optics turbidimeter, two instruments utilize serial ports to turn wireless mode to connect an information acquisition system.
Beneficial effect, the utility model is by the control of annular water tank integral manufacturing error, and the selection of optimized rotating speed ratio reduces Secondary Flow;
The utility model is reducing under disturbed condition as far as possible, has carried advanced three-D high frequency flow measuring device and acoustics optics and has surveyed husky equipment, improves measuring accuracy;
The utility model ensures the repeatability of accuracy, stability and the test controlled.
Especially there is good novelty at aspects such as major trough body seamless-molding, truss structural design, power control system design of hardware and software, observing and controlling software and hardware systems.
Brief description of the drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the one-piece construction schematic diagram of test unit described in the utility model.
Fig. 1 a is the side view of Fig. 1.
Fig. 2 a is ring groove rotary state 1 schematic diagram.
Fig. 2 b is ring groove rotary state 2 schematic diagram.
Fig. 2 c is ring groove rotary state 3 schematic diagram.
Fig. 3 a is the section Secondary Flow schematic diagram of rotary state 1 ring groove perpendicular to water (flow) direction.
Fig. 3 b is the section Secondary Flow schematic diagram of rotary state 2 ring grooves perpendicular to water (flow) direction.
Fig. 3 c is the section Secondary Flow schematic diagram of rotary state 3 ring grooves perpendicular to water (flow) direction.
Fig. 4 is ring groove flat state structural representation.
Fig. 5 is gantry frame structure schematic diagram.
Fig. 6 is stressed collar flat state structural representation.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
The core of annular water tank mainly forms (visible accompanying drawing 1) by ring groove, stressed collar, and the rotation of stressed collar and ring groove is the major impetus source of water movement, and the ultimate principle that annular water tank can produce quasi-uniform flow is:
(1) in the time that ring groove rotates, by relative motion principle, in tank, just form the current contrary with tank rotation direction, in groove, main flow is in inner side, and section circulation is counterclockwise.As Fig. 2 a;
(2) in the time that stressed collar embeds tank and contacts running with trough inner water face, water (flow) direction is identical with upper dish, and main flow is in outside, and section circulation is clockwise.As Fig. 2 b;
(3) during up and down simultaneously oppositely and with certain suitable ratio rotation, main flow is in centre position, and section circulation obviously weakens, and water (flow) direction is identical with upper dish.As Fig. 2 c.
Fig. 3 a, Fig. 3 b, Fig. 3 c are the section Secondary Flow schematic diagram perpendicular to water (flow) direction; Fig. 3 a, Fig. 3 b, Fig. 3 c be followed successively by that single stressed collar turns, single annular groove turns, up and down simultaneously oppositely and with the schematic diagram of certain suitable ratio (optimized rotating speed ratio) rotation, respectively with Fig. 2 a, Fig. 2 b, Fig. 2 c correspondence.
Through special numerical simulation study and the analysis to forefathers' tank result, optimum speed than the discrimination standard of (ratio of stressed collar and ring groove angular velocity of rotation) is:
(1) main flow is neither near inner side, also not near outside, in middle position;
(2) Secondary Flow kinetic energy is than within the scope of a smaller value;
(3) same degree of depth flow velocity, different radial positions, tangential flow velocity difference is less.
Again referring to Fig. 1, the test unit of a kind of truss-like all automatic measurement and control annular water tank in the present embodiment, on indoor Horizon, be provided with a horizontal support 1, on horizontal support 1, be provided with driving mechanism 2, on driving mechanism 2, be provided with rotatable annular tank 3, in annular water tank 3, be evenly equipped with some stressed collars 4, stressed collar 4 connects suspension rod rotary system 5, and suspension rod rotary system 5 connects a portal frame 6.
According to the generation principle of plane circulation, the unique way that wants to reduce Secondary Flow is the width that fully strengthens the external diameter of annular water tank, dwindles tank, so just can further compress the cross-current in ring groove.Need in addition inboard wall of cistern enough the circularity globality of enough little, the stressed collar of the spacing of smooth-going smooth, stressed collar and annular water tank and ring groove to get well.
First,, in the selection of major trough body relative dimensions, we utilize three-dimensional mathematical model to calculate Secondary Flow kinetic energy ratio, maximum can reach flow velocity, optimized rotating speed and the upper and following developing direction with due regard in basis such as compare.Referring to Fig. 4, selecting annular water tank external radius R1 is 1.095m, and inside radius R2 is 0.920m, and tank width D is 0.160m, and wall thickness d is 0.015m, and tank maximum height H is 0.5m, the radius of turn R=1.000m of tank.
In addition, in the design of major trough body cylindrical shell and stressed collar, all adopt high strength acrylic to build transparent panel, disposable seamless hot pressing global formation, without any splicing gap, the integrality of cell body and circularity control are better
Referring to Fig. 5, be to ensure whole system run time organization monolithic stability, and the later stage is easy to movement, the employing entirety truss-frame structure of the portal frame of this annular water tank.This structure level, vertical direction all can regulate, and pedestal and ground are unfixing, can not produce vibration and displacement while ensureing operation.
Horizontal support 1 and portal frame 6 can synchronizing movings.
The span of described portal frame is 3.900 meters, and the height of portal frame is 2.265 meters.
The power section of this annular water tank adopts the array mode that has brush DC servo motor (band speed measuring motor)+servo governor, can ensure like this closed-loop control of ring groove and stressed collar rotating speed, and when operation, stability is high.
Referring to Fig. 6, described shearing 4 rings are 12.Described stressed collar is that high strength acrylic is built the disposable seamless hot pressing global formation of transparent panel and made.
Again, referring to Fig. 1, on described horizontal support 1, have a central shaft 12, central shaft 12 connects the upper end of portal frame 6 through annular water tank 1.
Described suspension rod rotary system 5, comprises swivel mount 51, and swivel mount 51 arranges around central shaft 12, and swivel mount 51 tops are provided with rotary drive mechanism 52 and lift drive mechanism 53, and the lower end of swivel mount connects stressed collar 4.On described swivel mount, be provided with lifting sensor.
In addition, for the control feature of annular water tank, develop a set of annular water tank controller based on output power and the controller software based on Labview specially, so just realized the control of the full-automatic high precision of tank.
And there is very large deficiency in annular water tank in power and control system in the past, be mainly manifested in, unstable, the control system of the non-closed-loop control of rotating speed, operation adopt manual control, and precision is not high enough.
The husky measure portion of water of this annular water tank adopts advanced acoustics point type current meter (ADV) and optics turbidimeter (OBS300), in addition two instruments all utilize serial ports to turn wireless technology and realize wireless real-time control, add the special OBS wireless real-time transmission system software based on Matlab of establishment, so just realized convenient, the real-time transmission of the husky essential information of water.
And annular water tank had problems in the measurement of flow velocity and silt content in the past always, especially in the time that muddy water is measured, along with the increase of silt content, generally cisco unity malfunction all of traditional outstanding slurry formula flow velocity and hydrocone type sampler, in addition sediment concentration measuring data are in the past all aftertreatments, when test, cannot obtain real-time information.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model patent is defined by appending claims and equivalent thereof.
Claims (10)
1. an all automatic measurement and control test structure, it is characterized in that, on indoor Horizon, be provided with a horizontal support, on horizontal support, be provided with driving mechanism, on driving mechanism, be provided with rotatable annular tank, in annular water tank, be evenly equipped with some stressed collars, stressed collar connects suspension rod rotary system, and suspension rod rotary system connects a portal frame; On described horizontal support, have a central shaft, central shaft connects the upper end of portal frame through annular water tank; Described suspension rod rotary system, comprises swivel mount, and swivel mount arranges around central shaft, and swivel mount top is provided with rotary drive mechanism and lift drive mechanism, and the lower end of swivel mount connects stressed collar.
2. a kind of all automatic measurement according to claim 1 and control test structure, is characterized in that, the span of described portal frame is 3.900 meters, and the height of portal frame is 2.265 meters.
3. a kind of all automatic measurement according to claim 1 and control test structure, is characterized in that, described stressed collar is 12.
4. a kind of all automatic measurement according to claim 3 and control test structure, is characterized in that, described stressed collar is that high strength acrylic is built the disposable seamless hot pressing global formation of transparent panel and made.
5. a kind of all automatic measurement according to claim 1 and control test structure, is characterized in that, is provided with lifting sensor on described swivel mount.
6. a kind of all automatic measurement according to claim 1 and control test structure, is characterized in that, described annular water tank external radius is 1.095m, inside radius is 0.920m, and tank width is 0.160m, wall thickness 0.015m, tank maximum height is 0.5m, the radius of turn R=1.000m of tank.
7. a kind of all automatic measurement according to claim 6 and control test structure, is characterized in that, described annular water tank is that high strength acrylic is built the disposable seamless hot pressing global formation of transparent panel and made.
8. a kind of all automatic measurement according to claim 1 and control test structure, is characterized in that, described driving mechanism is for there being brush DC servo motor, described in to have brush DC servo motor be speed measuring motor, have in brush DC servo motor and be connected with servo governor.
9. a kind of all automatic measurement according to claim 1 and control test structure, is characterized in that, described test structure is also connected with an annular water tank control system based on output power.
10. a kind of all automatic measurement according to claim 1 and control test structure, is characterized in that, in described annular water tank, is provided with: acoustics point type current meter and optics turbidimeter, two instruments utilize serial ports to turn wireless mode to connect an information acquisition system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320475867.3U CN203941082U (en) | 2013-08-05 | 2013-08-05 | A kind of all automatic measurement and control test structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320475867.3U CN203941082U (en) | 2013-08-05 | 2013-08-05 | A kind of all automatic measurement and control test structure |
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| CN203941082U true CN203941082U (en) | 2014-11-12 |
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| CN201320475867.3U Expired - Fee Related CN203941082U (en) | 2013-08-05 | 2013-08-05 | A kind of all automatic measurement and control test structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017860A (en) * | 2016-07-07 | 2016-10-12 | 河海大学 | In-situ test device for tidal bay sediment critical starting shear stress and monitoring method for the shear stress |
| CN109323844A (en) * | 2018-09-30 | 2019-02-12 | 河海大学 | The annular water tank device of density stratification water body in a kind of simulation shear flow |
-
2013
- 2013-08-05 CN CN201320475867.3U patent/CN203941082U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017860A (en) * | 2016-07-07 | 2016-10-12 | 河海大学 | In-situ test device for tidal bay sediment critical starting shear stress and monitoring method for the shear stress |
| CN106017860B (en) * | 2016-07-07 | 2018-07-24 | 河海大学 | Tidal flat silt critical incipient motion shearing stress in-situ testing device and monitoring method |
| CN109323844A (en) * | 2018-09-30 | 2019-02-12 | 河海大学 | The annular water tank device of density stratification water body in a kind of simulation shear flow |
| CN109323844B (en) * | 2018-09-30 | 2019-12-31 | 河海大学 | Annular water tank device for simulating shear flow medium-density layered water body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20160805 |