CN206233175U - A kind of experimental provision for flume cross-sectional flow - Google Patents
A kind of experimental provision for flume cross-sectional flow Download PDFInfo
- Publication number
- CN206233175U CN206233175U CN201621322949.4U CN201621322949U CN206233175U CN 206233175 U CN206233175 U CN 206233175U CN 201621322949 U CN201621322949 U CN 201621322949U CN 206233175 U CN206233175 U CN 206233175U
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- China
- Prior art keywords
- water tank
- pitot tube
- flume
- tank
- pipe
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Abstract
A kind of experimental provision for flume cross-sectional flow,Including experimental bench,Inlet water tank and water tank are provided with experimental bench,It is interconnected by flume between inlet water tank and water tank,Storage tank and recovery tank are respectively arranged below with inlet water tank and water tank,It is interconnected by return pipe between storage tank and recovery tank,Water tank lower end is communicated with outlet pipe,Water tank is connected by outlet pipe with recovery tank,Immersible pump is provided with storage tank,Immersible pump is connected by water inlet pipe with inlet water tank,A gate valve is separately installed with the two ends of flume,Pitot tube lowering or hoisting gear is installed on flume,Pitot pressure display device is placed with experimental bench,Pitot tube lowering or hoisting gear is connected by flexible pipe with pressure-display device,The utility model can be according to the flow velocity of measurement different depth,Very easily adjust the angle of inclination fathomed with pressure gauge of Pitot tube,And can be shown fathoming with angle of inclination.
Description
Technical field
The utility model is related to a kind of experimental provision for flume cross-sectional flow.
Background technology
With the change of global climate, extreme weather phenomenon frequently occurs, so as to cause flood also more and more.For
The loss for preferably avoiding flood from causing, professional will study each flood, with the dependency number of calculated flow rate
According to providing reliable data for the prevention in downstream is ready.And the speed of current is used as an important factor, its prison
The water velocity surveyed to flood and under normal circumstances has important meaning.In addition, present riverbed is mostly flume.Therefore,
The work such as routine work and flood control are just particularly important using certain laboratory apparatus detection flume cross-sectional flow.
But, when we when the experiment of Measure section flow velocity is done in laboratory, it is necessary to be tested the speed in different location arrangements vertical
Line, and each position of the vertical line that tests the speed, also should select different point layout modes according to the depth of water, such as 2 point types, 3 point types,
The measuring point arrangement mode of 5 point types, and it is directed to different point layout modes, it would be desirable to select different depth, such as 2 point types
Point layout mode, it is necessary to the flow velocity at 0.2 times of depth of water and at 0.8 times of depth of water is measured, so as to take average；3 point types are then
The flow velocity measured at 0.2 and 0.6 and 0.8 times of depth of water is needed to take average；5 point types are also required to measure the section stream of more different depths
Speed, therefore the depth of frequently regulation Pitot tube is needed during experiment, the depth of regulation Pitot tube was the hand-held Pitot of testing crew in the past
Pipe, according to the height that ruler reacts, raises or reduces Pitot tube, and this mode of operation easily causes measurement error；Meanwhile, work as survey
When measuring different flume flow velocitys, when flow rate of water flow is larger, hydraulic pressure is just larger, then pressure gauge can also uprightly be measured well
Pressure difference.But, when measured cross-sectional flow is smaller, if pressure gauge is not inclined into certain angle, then because hydraulic pressure is small,
The liquid level of pressure gauge cannot be allowed more significantly to rise, so measurement has larger error, although represent pressure on textbook
Power meter inclines 30 degree can both meet most requirement of experiment；But it is very faint for some flow velocitys in experimentation, incline
After oblique 30 degree, pressure differential still cannot be clearly indicated out by pressure gauge, it is necessary to further pressure gauge is dipping down
Tiltedly；Or because flow velocity is excessive, angle of inclination is smaller, water flows out from pressure gauge, causes pressure gauge to fail；To be needed to be directed to
Different active cross-section flow velocitys, is adjusted to different angles of inclination to observe registration by pressure gauge, but existing adjusting method
Using bevel protractor while measurement, while with pad adjustment angle of inclination, adjustment get up it is very inconvenient, and adjustment tilt accuracy not
It is high.
The content of the invention
The technical problem that the utility model is solved is to provide a kind of experimental provision for flume cross-sectional flow, can basis
The flow velocity of different depth is measured, very easily the angle of inclination fathomed with pressure gauge of Pitot tube is adjusted, and can
To fathom and be shown with angle of inclination.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of reality for flume cross-sectional flow
Experiment device, including experimental bench, are provided with inlet water tank and water tank on experimental bench, mutual by flume between inlet water tank and water tank
Connection, storage tank and recovery tank are respectively arranged below with inlet water tank and water tank, and return pipe is passed through between storage tank and recovery tank
It is interconnected, water tank lower end is communicated with outlet pipe, and water tank is connected by outlet pipe with recovery tank, is provided with latent in storage tank
Water pump, immersible pump is connected by water inlet pipe with inlet water tank, and a gate valve is separately installed with the two ends of flume, is installed on flume
Have Pitot tube lowering or hoisting gear, be placed with Pitot pressure display device on experimental bench, Pitot tube lowering or hoisting gear by flexible pipe with
Pressure-display device is connected；
Pitot tube lowering or hoisting gear：Including the cover plate being connected on flume, motor and elevator chamber are installed on the cover board,
Worm gear is connected with elevator chamber interior axle, the worm screw with worm wheel is installed in motor rotating shaft, in cover plate and lifting
A vertical through hole is offered on case, elevating lever is provided with through hole, the tooth with worm wheel is fixed with elevating lever side
Bar, a vertical chute is offered on the relative one side of lifting worm and wheel, one is provided with through-hole wall face and is slided
The corresponding guide rail of groove, the chute is entrapped in the guide rail；A through hole is provided with along lifting rod axis, Pitot tube is inserted
Enter in through hole, graduation mark is provided with the outside wall surface of elevating lever；
Pressure-display device：Including panel and support, panel lower surface is provided with two pieces of vertical risers, is set in panel upper surface
There is a groove, pressure gauge is fixed with groove, an extension bar, the two of depth gauge rule have been respectively fixedly connected with the two ends of groove
End is separately fixed on two extension bars, and the support includes base plate, and one piece of supporting plate, two pieces are respectively fixed at two ends with base plate
Riser is connected by two screws with two pieces of support board shafts, angle board is fixedly connected with one piece of supporting plate wherein, at it
In one piece of screw on wing nut is installed；The pressure gauge is made up of two vertical sections and a bending section, and two are erected
Straight section is respectively communicated with bending section two ends, and two vertical sections pass through a soft pipe connection in Pitot respectively away from one end of bending section
The dynamic pressure tube and static tube of pipe, a permeability cell is communicated with bending section.
In the overflow pipe of inlet water tank upper end connection.
A stopping means for preventing Pitot tube from being skidded off from through hole, the limit are separately installed with the two ends of Pitot tube
Position device includes being enclosed within pipe sleeve outside Pitot tube, is threaded with many jackscrews on pipe sleeve, and one end of jackscrew can be resisted against complete
On the outer wall of trustship.
The beneficial effects of the utility model are：The measurement of Pitot tube can be very easily adjusted by Pitot tube lowering or hoisting gear
Depth, the angle of inclination of pressure gauge can be very easily adjusted by pressure-display device, by the quarter in elevating lever outside wall surface
Degree line can show fathoming for Pitot tube, and the angle of inclination of pressure gauge can be shown by angle board.
Brief description of the drawings
The utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is main structure diagram of the present utility model,
Fig. 2 is overlooking the structure diagram of the present utility model,
Fig. 3 is cross-sectional view of the utility model on Pitot tube lowering or hoisting gear,
Fig. 4 is the cross-sectional view at A-A in Fig. 3,
Fig. 5 is the cross-sectional view at B-B in Fig. 3,
Fig. 6 is main structure diagram of the utility model on pressure-display device,
Fig. 7 is overlooking the structure diagram of the utility model on pressure-display device,
Fig. 8 is the cross-sectional view at C-C in Fig. 7.
In figure：Flume 1, inlet water tank 2, water tank 3, Pitot tube lowering or hoisting gear 4, pressure-display device 5, flexible pipe 6, recovery tank
7th, storage tank 8, immersible pump 9, experimental bench 10, gate valve 11, return pipe 12, overflow pipe 21, outlet pipe 31, water inlet pipe 91, cover plate
401st, motor 402, elevator chamber 403, worm gear 404, through hole 405, worm screw 406, elevating lever 407, tooth bar 408, graduation mark
409th, guide rail 411, Pitot tube 412, through hole 413, pipe sleeve 414, jackscrew 415, panel 501, riser 502, angle board 503, branch
It is fagging 504, wing nut 505, bending section 506, permeability cell 507, groove 508, extension bar 509, depth gauge rule 510, screw 511, perpendicular
Straight section 512.
Specific embodiment
As illustrated in fig. 1 and 2, a kind of experimental provision for the cross-sectional flow of flume 1, including experimental bench 10, in experimental bench 10
Inlet water tank 2 and water tank 3 are provided with, are interconnected by flume 1 between inlet water tank 2 and water tank 3, in inlet water tank 2 and water outlet
Case 3 is respectively arranged below with storage tank 8 and recovery tank 7, is interconnected by return pipe 12 between storage tank 8 and recovery tank 7, water outlet
The lower end of case 3 is communicated with outlet pipe 31, and water tank 3 is connected by outlet pipe 31 with recovery tank 7, and immersible pump is provided with storage tank 8
9, immersible pump 9 is connected by water inlet pipe 91 with inlet water tank 2, a gate valve 11 is separately installed with the two ends of flume 1, in flume 1
On Pitot tube lowering or hoisting gear 4 is installed, Pitot pressure display device 5, Pitot tube lowering or hoisting gear 4 are placed with experimental bench 10
It is connected with pressure-display device 5 by flexible pipe 6；During work, running water is put into storage tank 8 and recovery tank 7, then by two
Side gate is closed, and opens immersible pump 9, and the water in storage tank 8 is pumped into inlet water tank 2, it is necessary to section stream by water inlet pipe 91
During speed experiment, can be by two gate openings, the water allowed in inlet water tank 2 is flowed into water tank 3 by flume 1, is flowed into out
Water in water tank 3 is drained into recovery tank 7 by outlet pipe 31, and the water in recovery tank 7 is backflowed into water storage by return pipe 12
Case 8, so far forms water circulation, by adjusting two folding degree of valve, it is possible to adjust the section stream of current in flume 1
Speed.
As shown in Figures 3 and 4, Pitot tube lowering or hoisting gear 4：Including the cover plate 401 being connected on flume 1, pacify on cover plate 401
Equipped with motor 402 and elevator chamber 403, worm gear 404 is connected with the interior axle of elevator chamber 403, is passed through in the rotating shaft of motor 402
The shell of elevator chamber 403, its one end is located in elevator chamber 403, and the end of rotating shaft is installed with what is be engaged with worm gear 404
Worm screw 406, offers a vertical through hole 405 on cover plate 401 and elevator chamber 403, and one is provided with through hole 405 with its shape
Into the elevating lever 407 that gap coordinates, the tooth bar 408 being engaged with worm gear 404 is fixed with the side of elevating lever 407, in elevating lever
A vertical chute 410 is offered on 407 one sides relative with worm gear 404, one is provided with the internal face of through hole 405 and is slided
The corresponding guide rail 411 of groove 410, the chute 410 is entrapped in the guide rail 411；One is provided with along the axis of elevating lever 407
Through hole 413, Pitot tube 412 is closely inserted in through hole 413, and graduation mark is provided with the outside wall surface of elevating lever 407
409；During 402 rotating shaft forward or reverse of motor, worm screw 406 is driven to rotate, worm screw 406 drives worm gear 404 to rotate, worm gear
404 driving tooth bars 408 are moved up and down, and then elevating lever 407 can be driven to move up and down；Chute 410 and guide rail 411 are acted on
Positioned with left and right before and after can elevating lever 407 be carried out, prevent elevating lever 407 in the excessive play of process for moving up and down；By
This is visible, and Pitot tube lowering or hoisting gear 4 can realize the lift adjustment of Pitot tube 412, and then can be according to different point layout sides
Formula adjusts the fathoming in flume 1 of Pitot tube 412；In addition can be with by the graduation mark 409 in the outside wall surface of elevating lever 407
Show fathoming for Pitot tube 412；When graduation mark 409 is observed, can be with the upper surface of elevator chamber 403 as Observational depth
Datum line.
As shown in FIGS. 6 to 8, pressure-display device 5：Including panel 501 and support, the lower surface of panel 501 is provided with two pieces and erects
Upright plate 502, a groove 508 is provided with the upper surface of panel 501, pressure gauge is fixed with groove 508, in groove 508
Two ends have been respectively fixedly connected with an extension bar 509, and the two ends of depth gauge rule 510 are separately fixed on two extension bars 509, depth gauge rule
510 can be used to measure pressure gauge pressure difference, and the support includes base plate, one piece of supporting plate is respectively fixed at two ends with base plate
504, two pieces of risers 502 are connected by two screws 511 with two pieces of axles of supporting plate 504, solid in one piece of supporting plate 504 wherein
Surely angle board 503 is connected with, wing nut 505 is installed on one piece of screw 511 wherein；The pressure gauge is perpendicular by two
Straight section 512 and a bending section 506 are constituted, and two vertical sections 512 are respectively communicated with the two ends of bending section 506, two vertical sections 512
One end away from bending section 506 connects the dynamic pressure tube and static tube in Pitot tube 412 by a flexible pipe 6 respectively, in bending section
506 are communicated with a permeability cell 507.
The angle of inclination for adjusting panel 501 is exactly the angle of inclination for adjusting pressure gauge, the angle adjustment orientation of panel 501
For：As shown in figure 8, in Fig. 8, the nut 505 in left side is wing nut 505, and right side chooses to install a hex nut 505, first will
Hex nut 505 and wing nut 505 unclamp slightly, then with screw 511 as axle, upper and lower rotating panel 501, it is determined that rotation
After angle, wing nut 505 is locked, riser 502 is clamped with supporting plate 504, consolidated this makes it possible to by panel 501
Determine, and then the angle of inclination of panel 501 can be adjusted according to different active cross-section flow velocitys, and can be by angle board
503 show the specific inclined number of degrees of panel 501, when observation inclines the number of degrees, can be using the upper surface of panel 501 as view angle
The datum line of degree.
In the overflow pipe 21 of the upper end of inlet water tank 2 connection.The effect of overflow pipe 21 is to prevent water from covering inlet water tank 2 and flowing
Onto ground.
A spacing dress for preventing Pitot tube 412 from being skidded off from through hole 413 is separately installed with the two ends of Pitot tube 412
Put, the stopping means includes the pipe sleeve 414 being enclosed within outside Pitot tube 412, and many jackscrews 415 are threaded with pipe sleeve 414,
One end of jackscrew 415 can be resisted against on the outer wall of Pitot tube 412.
Claims (3)
1. a kind of experimental provision for flume cross-sectional flow, including experimental bench（10）, in experimental bench（10）It is provided with inlet water tank
（2）And water tank（3）, inlet water tank（2）And water tank（3）Between pass through flume（1）It is interconnected, in inlet water tank（2）And water outlet
Case（3）It is respectively arranged below with storage tank（8）And recovery tank（7）, storage tank（8）And recovery tank（7）Between pass through return pipe（12）
It is interconnected, water tank（3）Lower end is communicated with outlet pipe, water tank（3）By outlet pipe and recovery tank（7）Connection, in water storage
Case（8）Inside it is provided with immersible pump（9）, immersible pump（9）By water inlet pipe（91）With inlet water tank（2）Connection, in flume（1）Two ends point
One gate valve is not installed（11）, it is characterised in that：In flume（1）On Pitot tube is installed（412）Lowering or hoisting gear（4）, in reality
Test platform（10）On be placed with Pitot tube（412）Pressure-display device（5）, Pitot tube（412）Lowering or hoisting gear（4）By flexible pipe（6）
With pressure-display device（5）Connection；
Pitot tube（412）Lowering or hoisting gear（4）：Including being connected to flume（1）On cover plate（401）, in cover plate（401）On be provided with
Motor（402）And elevator chamber（403）, in elevator chamber（403）Interior axle is connected with worm gear（404）, in motor（402）Turn
It is provided with axle and worm gear（404）The worm screw being engaged（406）, in cover plate（401）And elevator chamber（403）On offer one erect
Clear opening（405）, in through hole（405）Inside it is provided with elevating lever（407）, in elevating lever（407）Side is fixed with and worm gear（404）Phase
The tooth bar of cooperation（408）, in elevating lever（407）With worm gear（404）A vertical chute is offered on relative one side
（410）, in through hole（405）Internal face is provided with one and chute（410）Corresponding guide rail（411）, the chute（410）Card
Enter in the guide rail（411）It is interior；Along elevating lever（407）Axis is provided with a through hole（413）, Pitot tube（412）It is inserted in
Through hole（413）It is interior, in elevating lever（407）Outside wall surface be provided with graduation mark（409）；
Pressure-display device（5）：Including panel（501）And support, panel（501）Lower surface is provided with two pieces of vertical risers（502）,
In panel（501）Upper surface is provided with a groove（508）, in groove（508）Pressure gauge is inside fixed with, in groove（508）Two
End has been respectively fixedly connected with an extension bar（509）, depth gauge rule（510）Two ends be separately fixed at two extension bars（509）On, it is described
Support includes base plate, and one piece of supporting plate is respectively fixed at two ends with base plate（504）, two pieces of risers（502）By two screws
（511）With two pieces of supporting plates（504）Axle is connected, one piece of supporting plate wherein（504）On be fixedly connected with angle board（503）,
One piece of screw wherein（511）On wing nut is installed（505）；The pressure gauge is by two vertical sections（512）With one
Root bending section（506）Constitute, two vertical sections（512）It is respectively communicated with bending section（506）Two ends, two vertical sections（512）Far
From bending section（506）One end respectively pass through a flexible pipe（6）Connection is in Pitot tube（412）Dynamic pressure tube and static tube, curved
Tune（506）It is communicated with a permeability cell（507）.
2. a kind of experimental provision for flume cross-sectional flow according to claim 1, it is characterised in that：In inlet water tank
（2）The overflow pipe of upper end connection（21）.
3. a kind of experimental provision for flume cross-sectional flow according to claim 1, it is characterised in that:In Pitot tube
（412）Two ends be separately installed with one and prevent Pitot tube（412）From through hole（413）In the stopping means that skids off, the limit
Position device includes being enclosed within Pitot tube（412）Outer pipe sleeve（414）, in pipe sleeve（414）On be threaded with many jackscrews（415）,
Jackscrew（415）One end can be resisted against Pitot tube（412）Outer wall on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621322949.4U CN206233175U (en) | 2016-12-05 | 2016-12-05 | A kind of experimental provision for flume cross-sectional flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621322949.4U CN206233175U (en) | 2016-12-05 | 2016-12-05 | A kind of experimental provision for flume cross-sectional flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206233175U true CN206233175U (en) | 2017-06-09 |
Family
ID=58978344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621322949.4U Expired - Fee Related CN206233175U (en) | 2016-12-05 | 2016-12-05 | A kind of experimental provision for flume cross-sectional flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206233175U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576813A (en) * | 2017-09-06 | 2018-01-12 | 河海大学 | A kind of 360 degree flow rate measuring devices and method that can change the depth of water |
-
2016
- 2016-12-05 CN CN201621322949.4U patent/CN206233175U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576813A (en) * | 2017-09-06 | 2018-01-12 | 河海大学 | A kind of 360 degree flow rate measuring devices and method that can change the depth of water |
| CN107576813B (en) * | 2017-09-06 | 2019-07-12 | 河海大学 | A kind of flow rate measuring device and method of 360 degree of changeable depth of water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170609 Termination date: 20171205 |