CN102433854A - Open channel bend flume testing device - Google Patents

Open channel bend flume testing device Download PDF

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Publication number
CN102433854A
CN102433854A CN2011103071753A CN201110307175A CN102433854A CN 102433854 A CN102433854 A CN 102433854A CN 2011103071753 A CN2011103071753 A CN 2011103071753A CN 201110307175 A CN201110307175 A CN 201110307175A CN 102433854 A CN102433854 A CN 102433854A
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CN
China
Prior art keywords
glass
tank
bend
open channel
support frame
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CN2011103071753A
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Chinese (zh)
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CN102433854B (en
Inventor
李丹勋
胡江
陈启刚
钟强
王兴奎
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清华大学
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Priority to CN 201110307175 priority Critical patent/CN102433854B/en
Publication of CN102433854A publication Critical patent/CN102433854A/en
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Publication of CN102433854B publication Critical patent/CN102433854B/en

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Abstract

The invention relates to an open channel bend flume testing device, belonging to the technical field of water conservancy tests. The open channel bend flume testing device comprises a lifting system, a main beam, a support frame and a open channel bend flume consisting of a glass bottom plate and a glass side wall, wherein the open channel bend flume is installed on the support frame, the support frame is welded on the main beam, and the lifting system supports the bottom surface of the main beam and is used for continuously regulating the slope of the flume. The open channel bend flume testing device has the advantages that the accuracy is high, the application range is wide, the adaptability is strong, the slope can be continuously regulated, and the manpower and material resources are greatly saved. The open channel bend flume testing device has important production practical value and popularization and application prospect.

Description

A kind of open channel bend flume test device
Technical field
The invention belongs to water conservancy experimental technique field, particularly experimental rig of open channel bend tank and preparation method thereof.
Background technology
Natural alluvial stream ubiquity bending features.The flow characteristics of curved reach and sediment transport rule are compared widely different with straight section, must carry out particular study, and its research method mainly contains field inspection and laboratory test.Because the field inspection difficulty is big, the cycle is long, influence factor is complicated, is difficult to carry out systematic research.The general open channel bend flume test device that constitutes by upper reaches inlet straight section 1, middle reaches bend section 2, lower exit straight section 3 that adopts of laboratory test; Fig. 1 is the floor map of a typical open channel bend tank; This device can carry out system under certain simplified condition in depth studies, for the characteristics of motion that discloses the bend current provides basic data.
Slope change is one of the most basic parameter of open-channel flow.Generally 01,02,03 and three section glass edge wall 11,12,13 of three section concrete base plates of the gradient connects and composes a whole tank to existing open channel bend tank by having fixedly; When the gradient is zero; It longitudinally launches the section schematic construction shown in Fig. 2 (a); Wherein 01,02,03 pair of whole tank of concrete floor plays support and load-bearing effect, 21,22,23 bed surfaces that constitute open channel bend tank of the top panel of base plate 01,02,03.When the open channel bend tank of this form of construction; At first install both sides glass edge wall 11,12,13; Then at glass edge wall 11,12, fill concrete floor 01,02,03 between 13 to predetermined altitude, form base plate top panel 21,22,23 with predetermined slope.When needs are adjusted the bed surface gradient, then need the extra concrete 31,32,33 that fills, form the base plate top panel 21,22,23 of new fixedly gradient again, like Fig. 2 (b).Therefore, in traditional open channel bend tank, carry out the manpower and materials that the test of each gradient all need cost a lot of money, and it is also very big to adjust the damage of gradient opposite side wall glass repeatedly.In addition, fixing concrete floor also makes measuring apparatuss such as can't utilizing particle image velocimetry technology PIV throw sheet laser from the tank bottom or takes pictures, to measure the flow behavior of open channel bend current.
Summary of the invention
The objective of the invention is for overcoming the weak point of prior art; A kind of open channel bend flume test device is proposed; Have strong, the supertronic continuously of precision height, applied range, compliance, the characteristics of saving lot of manpower and material resources have important production practical value and popularizing application prospect.
A kind of open channel bend flume test device that the present invention proposes is characterized in that this device comprises jacking system, girder, support frame; And the open channel bend tank that constitutes by glass film plates and side wall glass; Wherein, open channel bend tank is installed on the support frame, and support frame is welded on above the girder; Jacking system is supported on the bottom surface of girder, is used for the continuous adjusting to the tank gradient.
Said girder can adopt frame construction, is connected each other for three sections by upper reaches inlet straight section beam, middle reaches bend section beam and lower exit straight section beam to constitute, and each section beam supports and regulate the gradient by the jacking system of the soffit that is connected in each Duan Liang mutually respectively.
Said jacking system can be by many lifting screws that are connected below the upper reaches inlets straight section beam; Be connected many fixing branch daggers below the bend Duan Liang of middle reaches; Be connected many lifting screws below the lower exit straight section beam; One of being connected below upper reaches inlets straight section beam and the bend Duan Liang junction, middle reaches is fixing hinged, and with a plurality of bases formations of lifting screw lower ends.
Said every fixing branch dagger can be made up of a rectangle steel column, and per two steel columns are welded on the same cross section of girder soffit and form a pair of fixing branch dagger; Said lifting screw is made up of thread screw, and per two screw rod lower ends link to each other with same base, and two screw rods are on the same cross section of tank.
Said base can be welded by crossbeam and column, and bilateral symmetry is equipped with cylindrical sleeve before and after the crossbeam of said base, and sleeve lining is provided with screw thread, is used to connect lifting screw, and the sleeve periphery is welded with driven gear; Between two driven gears driven wheel is installed,, is used to drive the driven gear rotation, thereby drives a pair of lifting screw oscilaltion with two driven gear interlocks mutually; Lifting screw lower end and internal thread of sleeve are connected, and the lifting screw upper surface is welded on the soffit of girder.
Said support frame can adopt frame construction; Interconnect for three sections by upper reaches inlets straight section support frame, middle reaches bend section support frame and lower exit straight section support frame and to form one; This each section support frame is by many cruciform bracings that are arranged on the bottom; Be arranged on the polylith lath of cruciform bracing top, be connected many fine setting screw rods between cruciform bracing and the lath, and the upright beam formation of many frameworks that is connected the cruciform bracing two ends; The cruciform bracing two ends are welded on the girder; The cruciform bracing intermediate section is furnished with a plurality of screws, and the fine setting screw rod passes the screw on the cruciform bracing from the bottom up, and the fine adjustment screw tip is fixed on the soffit of lath; Be used to regulate the height of top panel; Lath is used to install the glass film plates of open channel bend tank, and framework Li Liang lower end is welded on the girder, is used to install and support the side wall glass of open channel bend tank.
Said open channel bend tank can comprise upper reaches inlet straight section tank, middle reaches bend section tank and the lower exit straight way section tank that is made up of polylith glass film plates and side wall glass; The glass film plates of three sections tanks lies on the support frame respectively, and the base plate of the composition open channel bend tank that is interconnected; The side wall glass of three sections tanks near glass film plates by support frame supports.
Said middle reaches bend section tank base plate can be made up of with the anchor clamps that are connected adjacent two fan-shaped glass the fan-shaped glass of polylith, and all fan-shaped glass are spliced into bend base plate glass with anchor clamps; Two longitudinal edges of every block of fan-like pattern glass have the platform of milling, and the metal fixture that is installed between adjacent two blocks of glass is made up of the screw of upper protruding block, following plain block and connection upper protruding block, following plain block.
Technique effect of the present invention
1. precision is high: the global error of bend tank is less than 0.2mm;
2. applied range: can carry out the test of various current, silt;
3. compliance is strong: full glass guide channel body is advanced measuring methods such as the PIV equipment that provides the foundation;
4. realize the continuous supertronic of bend tank total length, can save lot of manpower and material resources;
5. this device can be used for the test of steady flow and unsteady flow, has important production practical value and popularizing application prospect.
Description of drawings
Fig. 1 is the floor map of typical open channel bend tank.
Fig. 2 is existing open channel bend tank base slope (longitudinally a launching) variation pattern sketch map; Wherein,
When Fig. 2 (a) was zero for the gradient, it longitudinally launched cross-sectional view,
Fig. 2 (b) is gradient when non-vanishing, and it longitudinally launches cross-sectional view.
Fig. 3 longitudinally launches sketch map for open channel bend flume test device of the present invention.
Fig. 4 is a jacking system understructure sketch map of the present invention, and wherein, Fig. 4 (a) is the lateral view when downstream is observed from the upper reaches, and Fig. 4 (b) is a vertical view.
Fig. 5 is a support frame structure sketch map of the present invention.
Fig. 6 is a fan-like pattern glass shape sketch map of the present invention, and wherein, Fig. 6 (a) is for milling fan-shaped glass 821 plan views behind the platform, and Fig. 6 (b) is for milling the lateral view of the fan-shaped glass behind the platform;
Fig. 7 is bend section base plate glass fixture mounting structure figure of the present invention.
The automatic supertronic sketch map of Fig. 8 bend tank of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Open channel bend flume test equipments overall structure of the present invention comprises jacking system, girder, support frame; And the open channel bend tank that constitutes by glass film plates and side wall glass; Wherein, open channel bend tank is installed on the support frame, and support frame is welded on above the girder; Jacking system is supported on the bottom surface of girder, is used for the continuous adjusting to the tank gradient.
The specific embodiment of said apparatus each several part and function combine each accompanying drawing to explain respectively as follows:
The girder employing specification of present embodiment is that the rectangle steel of 80 * 120 * 5mm is welded into frame construction; As shown in Figure 3; Be made up of upper reaches inlet straight section beam 51, middle reaches bend section beam 52 and 53 3 sections mutual linkings of lower exit straight section beam, each section beam supports and regulates the gradient by the jacking system of the soffit that is connected in each Duan Liang mutually respectively.
The jacking system of present embodiment is by the many lifting screws 41 that are connected below the upper reaches inlets straight section beam 51; Be connected many fixing branch daggers 42 below the middle reaches bend section beam 52; Be connected the many lifting screws 43 below the lower exit straight section beam 53; It is fixing hinged 44 to be connected below upper reaches inlets straight section beam 51 and bend section beam 52 junctions, middle reaches one, and constitutes with a plurality of bases 45 of lifting screw 41,43 lower ends, as shown in Figure 3.The every rectangle steel column formation that fixing branch dagger 42 is 80 * 60 * 1.4mm by a specification, per two steel columns are welded on the same cross section of girder soffit and form a pair of fixing branch dagger.Lifting screw 41 and 43 constitutes by M36 type screw rod, and per two screw rods are a pair of, and the lower end links to each other with same base, and two screw rods are on the same cross section of tank; Base 45 is that crossbeam and the column that the channel-section steel of 120 * 53 * 5.5mm is processed is welded by specification, and its structure is as shown in Figure 4, wherein; Fig. 4 (a) is the lateral view when downstream is observed from the upper reaches; Fig. 4 (b) is a vertical view, and bilateral symmetry is equipped with cylindrical sleeve 46 before and after the crossbeam of base, and sleeve lining is provided with screw thread; Be used to connect lifting screw 41,43, the sleeve periphery is welded with driven gear 47; (crossbeam center) is equipped with driven wheel 48 between two driven gears, with two driven gear interlocks mutually, is used to drive the driven gear rotation, thereby drives a pair of lifting screw oscilaltion.Lifting screw 41,43 lower ends are connected with sleeve 46 screw-internal thread fit, and the upper surface is welded on the soffit of girder.
It is that the angle beam of 50 * 50 * 6mm, aluminium strip and the M10 type screw rod that specification is 350 * 25 * 5mm connect into frame construction that the support frame of present embodiment adopts a plurality of specifications; Interconnected for 63 3 sections by upper reaches inlets straight section support frame 61, middle reaches bend section support frame 62 and lower exit straight section support frame and to form one, each segment frames structure is identical.Fig. 5 is the radially sketch map of support frame; Each section support frame is by the many cruciform bracings 611 that are arranged on the bottom; Be arranged on the polylith aluminium strip 613 of cruciform bracing top; Be connected many fine setting screw rods 612 between cruciform bracing 611 and the lath 613, and upright beam 614 formations of many frameworks that are connected crossbeam 611 two ends.Wherein, Cruciform bracing 611 two ends are welded on the girder; Cruciform bracing 611 intermediate section are furnished with a plurality of (present embodiment is three) screw, fine setting screw rod 612 passes the screw on the cruciform bracing 611 from the bottom up, and fine adjustment screw rod 612 tops are fixed on the soffit of aluminium strip 613; Be used to regulate the elevation of top panel; Lath is used to install the glass film plates of open channel bend tank, through the height of this fine setting screw rod of meticulous adjusting, can so that the alignment error of open channel bend tank glass film plates less than ± 0.2mm.Upright beam 614 lower ends of framework are welded on the girder, are used to install and support the side wall glass of open channel bend tank.
The open channel bend tank of present embodiment comprises that the upper reaches inlet straight section tank that is made up of polylith glass film plates 81 and side wall glass 91, the middle reaches bend section tank that is made up of polylith glass film plates 82 and side wall glass 92 reach the lower exit straight way section tank that is made up of polylith glass film plates 83 and side wall glass 93, and is as shown in Figure 3.The dimensional parameters of the tank of present embodiment can be identical with the tank of routine, and the glass film plates of three sections tanks lies in respectively on the lath 613 of support frame, and the base plate of the composition open channel bend tank that is interconnected; The side wall glass of three sections tanks is vertically installed near the glass film plates both sides, and is supported by the upright beam 614 of the framework of support frame both sides.
In order to guarantee that tank middle reaches bend section base plate glass 82 can smooth-going transition when regulating the various gradient, the middle reaches bend section tank base arrangement of present embodiment is like Fig. 6, shown in 7.Form with the anchor clamps that are connected adjacent two fan-shaped glass by the fan-shaped glass 821 of polylith.All fan-shaped glass are spliced into bend base plate glass 82 with anchor clamps.For example a kind of specific embodiment is that then bend base plate glass 82 can be made up of the fan-shaped glass 821 that 12 equal radian center angles are 14.7 °, width is identical with the tank width if the bend radian of design is 180 degree; Two longitudinal edges of every block of fan-like pattern glass 821 have the platform of milling 822, and Fig. 6 (a) is for milling fan-shaped glass 821 plan views behind the platform, and Fig. 6 (b) is for milling the lateral view of the fan-shaped glass behind the platform; For 12 blocks of fan-shaped glass 821 are connected as a single entity; The metal fixture that is installed between adjacent two blocks of glass is made up of the screw 825 of upper protruding block 823, following plain block 824 and connection upper protruding block 823, following plain block 824; Fig. 7 is for installing the structure chart of two adjacent fan-shaped glass with metal fixture, wherein, metal fixture 823 is positioned at the upper surface that mills platform 822; Metal fixture upper protruding block 823 upper surfaces and fan-shaped glass 821 flush (are reserved the space of about 1mm between the left and right sides and the fan-shaped glass; To prevent mutual extrusion), plain block 824 is positioned at the soffit that mills platform 822 under the metal fixture, and two metal fixtures are fixing by screw 825 up and down; At last, plain block under the metal fixture 824 radially is fixed on the lath of support frame along bend one by one, can constitutes the glass film plates of continuously smooth.
The open channel bend tank of the foregoing description can be realized the unified continuous supertronic of total length; Its concrete implementation is as shown in Figure 8: make lifting screw 41 and 43 rise respectively and descend according to the gradient of test requirements document rotation driven wheel 48; Thereby driving upper reaches inlet straight section tank 91 is the fulcrum lifting with fixing hinge, and 93 of lower exit straight section tanks are that starting point is drawn extended line and descended in proportion with fixing hinge.The bend section tank 92 in middle reaches; Height by the lath 613 of finely tuning screw rod 612 adjustable support frameworks; Make the gradient of bend section glass film plates 82 center lines consistent with the gradient of upper reaches straight section base plate glass 81 and downstream straight section base plate glass 83, the smooth-going connection of base plate of full tank, meanwhile; Rely on the positive action power of metal fixture 823 and 824 to make every fan-shaped base plate glass 821 distortions, making it on any position radially all is level.

Claims (8)

1. an open channel bend flume test device is characterized in that this device comprises jacking system, girder, support frame; And the open channel bend tank that constitutes by glass film plates and side wall glass; Wherein, open channel bend tank is installed on the support frame, and support frame is welded on above the girder; Jacking system is supported on the bottom surface of girder, is used for the continuous adjusting to the tank gradient.
2. install according to claim 1; It is characterized in that; Said girder adopts frame construction, is connected each other for three sections by upper reaches inlet straight section beam, middle reaches bend section beam and lower exit straight section beam to constitute, and each section beam supports and regulate the gradient by the jacking system of the soffit that is connected in each Duan Liang mutually respectively.
3. like the said device of claim 2; It is characterized in that; Said jacking system is by many lifting screws that are connected below the upper reaches inlets straight section beam, is connected many fixing branch daggers below the bend Duan Liang of middle reaches, is connected many lifting screws below the lower exit straight section beam; One of being connected below upper reaches inlets straight section beam and the bend Duan Liang junction, middle reaches is fixing hinged, and with a plurality of bases formations of lifting screw lower ends.
4. like the said device of claim 3, it is characterized in that said every fixing branch dagger is made up of a rectangle steel column, per two steel columns are welded on the same cross section of girder soffit and form a pair of fixing branch dagger; Said lifting screw is made up of thread screw, and per two screw rod lower ends link to each other with same base, and two screw rods are on the same cross section of tank.
5. like the said device of claim 3, it is characterized in that said base is welded by crossbeam and column; Bilateral symmetry is equipped with cylindrical sleeve before and after the crossbeam of said base; Sleeve lining is provided with screw thread, is used to connect lifting screw, and the sleeve periphery is welded with driven gear; Between two driven gears driven wheel is installed,, is used to drive the driven gear rotation, thereby drives a pair of lifting screw oscilaltion with two driven gear interlocks mutually; Lifting screw lower end and internal thread of sleeve are connected, and the lifting screw upper surface is welded on the soffit of girder.
6. install according to claim 1; It is characterized in that said support frame adopts frame construction, interconnect for three sections by upper reaches inlet straight section support frame, middle reaches bend section support frame and lower exit straight section support frame and form one; This each section support frame is by many cruciform bracings that are arranged on the bottom; Be arranged on the polylith lath of cruciform bracing top, be connected many fine setting screw rods between cruciform bracing and the lath, and the upright beam formation of many frameworks that is connected the cruciform bracing two ends; The cruciform bracing two ends are welded on the girder; The cruciform bracing intermediate section is furnished with a plurality of screws, and the fine setting screw rod passes the screw on the cruciform bracing from the bottom up, and the fine adjustment screw tip is fixed on the soffit of lath; Be used to regulate the height of top panel; Lath is used to install the glass film plates of open channel bend tank, and framework Li Liang lower end is welded on the girder, is used to install and support the side wall glass of open channel bend tank.
7. install according to claim 1, it is characterized in that, said open channel bend tank comprises upper reaches inlet straight section tank, middle reaches bend section tank and the lower exit straight way section tank that is made up of polylith glass film plates and side wall glass; The glass film plates of three sections tanks lies on the support frame respectively, and the base plate of the composition open channel bend tank that is interconnected; The side wall glass of three sections tanks near glass film plates by support frame supports.
8. like the said device of claim 7, it is characterized in that said middle reaches bend section tank base plate is made up of with the anchor clamps that are connected adjacent two fan-shaped glass the fan-shaped glass of polylith, all fan-shaped glass are spliced into bend base plate glass with anchor clamps; Two longitudinal edges of every block of fan-like pattern glass have the platform of milling, and the metal fixture that is installed between adjacent two blocks of glass is made up of the screw of upper protruding block, following plain block and connection upper protruding block, following plain block.
CN 201110307175 2011-10-12 2011-10-12 Open channel bend flume testing device CN102433854B (en)

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CN102865994A (en) * 2012-08-31 2013-01-09 三峡大学 Test device and test method of occurrence and movement rule of temperature difference flow backward density current
CN103197044A (en) * 2013-03-22 2013-07-10 华中农业大学 Three-dimensional slope change soil slot
CN103195011A (en) * 2013-04-01 2013-07-10 河海大学常州校区 Method for adjusting flatness of U-steel columns of transparent water tank
CN103674476A (en) * 2013-05-24 2014-03-26 重庆交通大学 Periodic open channel unsteady flow non-contact turbulent structure measurement and control system
CN103711101A (en) * 2013-12-26 2014-04-09 天津大学 Deformable open channel curve water channel device for water flow silt experiment
CN103759917A (en) * 2014-01-13 2014-04-30 河海大学 Combined type river channel simulating device and single piece thereof
CN104090588A (en) * 2014-03-12 2014-10-08 南通航运职业技术学院 Automatic adjusting device and adjusting method for generating of uniform flows by open-trench experiment water channel
CN104594283A (en) * 2014-12-31 2015-05-06 河海大学 Multi-functional system for simulating long-distance water diversion project and method for simulating long-distance water diversion project
CN105181539A (en) * 2015-09-11 2015-12-23 长江大学 No-pillar movable type sedimentation simulation experimental bottom plate
CN105784322A (en) * 2016-05-04 2016-07-20 中国水利水电科学研究院 Flashing board device for performing artificially simulated rainfall tests of different slope lengths on same soil bin
CN106759070A (en) * 2016-11-25 2017-05-31 扬州大学 A kind of novel dismountable assembled tank counterfort supporting structure
CN106918444A (en) * 2017-04-29 2017-07-04 西南交通大学 Varible slope flume pilot system
CN108287055A (en) * 2018-01-30 2018-07-17 大连理工大学 A kind of adjustable tidal wave experimental trough device
CN111060282A (en) * 2019-12-12 2020-04-24 河海大学 But U type experiment basin of straight section and curved section split

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CN102865994A (en) * 2012-08-31 2013-01-09 三峡大学 Test device and test method of occurrence and movement rule of temperature difference flow backward density current
CN103197044B (en) * 2013-03-22 2016-01-20 华中农业大学 Three-dimensional slope change soil slot
CN103197044A (en) * 2013-03-22 2013-07-10 华中农业大学 Three-dimensional slope change soil slot
CN103195011A (en) * 2013-04-01 2013-07-10 河海大学常州校区 Method for adjusting flatness of U-steel columns of transparent water tank
CN103674476A (en) * 2013-05-24 2014-03-26 重庆交通大学 Periodic open channel unsteady flow non-contact turbulent structure measurement and control system
CN103711101A (en) * 2013-12-26 2014-04-09 天津大学 Deformable open channel curve water channel device for water flow silt experiment
CN103711101B (en) * 2013-12-26 2016-02-24 天津大学 A kind of deformable open channel curve water channel device for water for flow silt experiment
CN103759917A (en) * 2014-01-13 2014-04-30 河海大学 Combined type river channel simulating device and single piece thereof
CN103759917B (en) * 2014-01-13 2016-07-06 河海大学 A kind of combination type river course analog and single-piece thereof
CN104090588A (en) * 2014-03-12 2014-10-08 南通航运职业技术学院 Automatic adjusting device and adjusting method for generating of uniform flows by open-trench experiment water channel
CN104090588B (en) * 2014-03-12 2017-06-09 南通航运职业技术学院 A kind of open channel experimental trough generates the self-checking device and adjusting method of uniform flow
CN104594283A (en) * 2014-12-31 2015-05-06 河海大学 Multi-functional system for simulating long-distance water diversion project and method for simulating long-distance water diversion project
CN104594283B (en) * 2014-12-31 2016-02-10 河海大学 A kind of long distance water diversion project Multi-functional analog system and analogy method
CN105181539B (en) * 2015-09-11 2017-12-12 长江大学 One kind is without the movable sedimentary simulating experiment bottom plate of pillar
CN105181539A (en) * 2015-09-11 2015-12-23 长江大学 No-pillar movable type sedimentation simulation experimental bottom plate
CN105784322A (en) * 2016-05-04 2016-07-20 中国水利水电科学研究院 Flashing board device for performing artificially simulated rainfall tests of different slope lengths on same soil bin
CN106759070A (en) * 2016-11-25 2017-05-31 扬州大学 A kind of novel dismountable assembled tank counterfort supporting structure
CN106759070B (en) * 2016-11-25 2018-12-07 扬州大学 A kind of detachable assembling type sink counterfort supporting structure
CN106918444A (en) * 2017-04-29 2017-07-04 西南交通大学 Varible slope flume pilot system
CN108287055A (en) * 2018-01-30 2018-07-17 大连理工大学 A kind of adjustable tidal wave experimental trough device
CN111060282A (en) * 2019-12-12 2020-04-24 河海大学 But U type experiment basin of straight section and curved section split
CN111060282B (en) * 2019-12-12 2020-07-31 河海大学 But U type experiment basin of straight section and curved section split

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