CN207435995U - The weir type sink tail-gate of aperture can accurately be adjusted - Google Patents
The weir type sink tail-gate of aperture can accurately be adjusted Download PDFInfo
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- CN207435995U CN207435995U CN201721520464.0U CN201721520464U CN207435995U CN 207435995 U CN207435995 U CN 207435995U CN 201721520464 U CN201721520464 U CN 201721520464U CN 207435995 U CN207435995 U CN 207435995U
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- weir
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- graduated scale
- notch
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Abstract
The utility model discloses a kind of weir type sink tail-gates that can accurately adjust aperture, and including plate shaped weir and weir notch, weir top is equipped with to measure the right angled triangle overcurrent mouth of weir flow amount；In weir notch there is the weir track that weir is supplied to move up and down and supply the transmission of conveyor belt motion with holes；The observation window with weir orbit connection is equipped in weir notch one side, the first graduated scale is equipped with beside observation window, when weir overcurrent mouth bottom is flushed with bottom of gullet, the zero point of the first graduated scale is directed toward at the top of weir；Weir notch upstream is followed successively by settling pit and sink, and vertical water troughstand face sets to read the second graduated scale of the sink afterbody depth of water in sink side wall, and the zero point of the second graduated scale flushes bag with sink inner bottom surface.Using the utility model device, the ambiguity of conventional tail-gate aperture regulation is overcome, reduces the dependence to researcher's experience, can significantly save current regulating time, promote flume test efficiency.
Description
Technical field
The utility model is related to a kind of water conservancy experimental rigs, and in particular to a kind of weir type water that can accurately adjust aperture
Slot tail-gate.
Background technology
Sink is a kind of fundamental equipments in water conservancy experiment, in the research of hydraulics basic theory and hydraulic engineering problem
In it is indispensable.By taking the circulating water chennel of common rectangle variable slope as an example, basic structure includes water storage system, base slope adjusts system
System, four part of tail-gate and sink, preceding three parts correspond to the adjusting that flow Q, sink base slope S and tail-gate cross properties of flow respectively.Tail-gate
The relation of flow and the afterbody depth of water that properties of flow refers to through tail-gate is crossed, is adjusted by tail-gate aperture, the same afterbody depth of water
Different vent flows can be obtained, and then obtains different experiment flow conditions.
Uniform flow condition is the most common type flow condition when being conducted a research using sink, to obtain sufficient experiment money
Material, generally requires to set sufficient amount of operating condition of test.The acquisition of uniform flow condition is needed through inlet flow rate, base slope and tail-gate
Comprehensive adjustment realize that this allows for uniform flow and adjusts the important technology become in flume test.Under existence conditions, stream
Amount and base slope can realize that quantitative accurate is adjusted, and wherein flow is an isolated parameter, substantially from other after accurate adjusting
Parameter influences.However, current are all very low to the change sensitivity of base slope and tail-gate, it is necessary to longer reaction time, therefore, it is difficult to
The quickly corresponding regulated value of definite corresponding flow condition.The prior art generally requires to adjust tail-gate aperture and the group of base slope repeatedly
It closes, constantly approaches required flow condition, if tail-gate aperture cannot quantify adjusting or degree of regulation is too low, in the later stage of adjusting
Easily there is the phenomenon that overshoot, cause serious repeated work.Therefore accurate adjust of tail-gate aperture restricts uniform flow with regard to becoming
Adjust the key factor with sink utilization ratio.
The structure type of tail-gate directly determines the mode and precision of tail-gate aperture regulation.Common flat, stoplog
Control of the tail-gates such as formula, vertical flag leaf chip and oblique pull orifice-plate type for crossing properties of flow often obscures, therefore base in use
This is all previously described pattern, time-consuming huge, and has very strong dependence to the experience of experimenter, seriously affects experiment effect
Rate.In conclusion it is highly desirable to be improved sink tail-gate structure.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the utility model provides one kind and can accurately adjust out
The weir type sink tail-gate of degree solves the problems, such as that traditional tail-gate adjusting is flowed uniformly through in obscuring, mitigates to researcher's experience
Dependence, so as to fulfill the quick adjusting of uniform flow condition, improve flume test efficiency.
Technical solution：In order to solve the above technical problems, the utility model provides a kind of weir that can accurately adjust aperture
Type sink tail-gate, including plate shaped weir and weir notch, the weir top is equipped with to measure the right angle three of weir flow amount
Angular overcurrent mouth；There is the weir track moved up and down for weir and the transmission for conveyor belt motion in the weir notch
It is with holes；The observation window with weir orbit connection is equipped in weir notch one side, the first graduated scale is equipped with beside observation window, works as weir
When overcurrent mouth bottom is flushed with bottom of gullet, the zero point of the first graduated scale is directed toward at the top of weir；The weir notch upstream is followed successively by
Settling pit and sink, vertical water troughstand face sets to read the second graduated scale of the sink afterbody depth of water in the sink side wall,
The zero point of second graduated scale is flushed with sink inner bottom surface.
Specifically, transmission system is further included, the transmission system includes transmission belt, upper connecting rod, upper roller, lower link under
Idler wheel, the transmission belt through weir track and be driven it is with holes and be wound on upper roller and bottom roller, the upper roller with it is upper
Connecting rod connects, and the upper connecting rod is supported by the connecting rod support at both ends at the top of weir notch, and the electricity of the stepping by being fixed on connecting rod support
Machine drives, and the lower link is arranged on weir notch bottom inner portion with bottom roller.
Specifically, transmission sectional dimension with holes is slightly larger than the sectional dimension of transmission belt.
Specifically, the observation window is sealed with transparent glass and filled.
In use, for a specific regular sink, width B is constant, when inlet flow rate Q, base slope S and tail-gate are opened
When degree is fixed, current finally would develop into steady flow.If the current after stablizing are identical along Cheng Shuishen, accordingly it is known as constant equal
Uniform flow condition, abbreviation uniform flow.During using right angled triangle weir tail-gate, weir flow amount and inlet flow rate Q are crossed after flow of water constant
It is equal, and with weir head HeThe relation of meeting formula (1).
H in formulaeFor the height of weir overcurrent mouth bottom to stabilizer surface.
Therefore, it is uniform flow target depth of water H to the adjustment sink afterbody depth of water, it is only necessary to adjust weir overcurrent mouth bottom
Height h is H and HeDifference, corresponding above device, which adjusts weir, makes its corresponding graduated scale reading in top be h.Root
The computational methods of h are can obtain as shown in (2) formula according to formula (1)：
H=H-100* (Q/1400)0.4 (2)
Flow Q units use L/s in formula, and each depth of water Parameter units are in terms of cm, similarly hereinafter.
Advantageous effect：Different from traditional tail-gate, weir tail-gate device provided by the utility model can accurately adjust tail
Door aperture, can effectively avoid the ambiguity of conventional tail-gate aperture regulation.It is based further on weir vent flow and weir head
Quantitative relationship, according to the setting flow of flow condition and the afterbody depth of water, you can accurately calculate corresponding tail-gate tune using formula (2)
Section height.The utility model can significantly save current regulating time, promote flume test efficiency.
The technical issues of being solved except above-described the utility model, form technical solution technical characteristic and by these
Caused by the technical characteristic of technical solution outside advantage.It, below will knot to make goal of the invention, technical solution and advantage clearer
The attached drawing in the utility model embodiment is closed, is included in the other technologies problem that can be solved to the utility model, technical solution
Other technical characteristics and these technical characteristics the advantages of bringing do apparent, complete description, it is clear that described reality
It is the utility model part of the embodiment to apply example, instead of all the embodiments.Usually it is described and illustrated herein in the accompanying drawings
The component of the utility model embodiment can configure to arrange and design with a variety of.Therefore, below to carrying in the accompanying drawings
The detailed description of the embodiment of the utility model of confession is not intended to limit claimed the scope of the utility model, but only
Only represent the selected embodiment of the utility model.Based on the embodiment in the utility model, those of ordinary skill in the art are at it
On the basis of without creative work all other embodiments obtained, shall fall within the protection scope of the present invention.
Description of the drawings
Fig. 1 is the overall schematic of weir tail-gate device in the utility model embodiment；
Fig. 2 is weir and transmission system schematic diagram in Fig. 1；
Fig. 3 is the structure diagram of weir notch in Fig. 1；
Fig. 4 is the structure diagram of sink end segment in Fig. 1；
In figure：1 is weir, and 21 be transmission belt, and 22 be idler wheel, and 23 be connecting rod, and 24 be stepper motor, and 31 be weir rail
Road, 32 be connecting rod support, and 33 be observation window, and 34 be the first graduated scale, and 35 transmissions are with holes, and 41 be sink, and 42 be settling pit, and 43 are
Second graduated scale.
Specific embodiment
Embodiment：
The weir type sink tail-gate that the present embodiment can accurately adjust aperture is illustrated using square triangular-notch weir, is such as schemed
Shown in 1- Fig. 4, mainly including weir, transmission system, weir notch and sink end segment.Weir 1 is a tablet, and top is arranged to
To measure weir flow amount, weir 1 can move up and down right angled triangle overcurrent mouth along the weir track 31 of weir notch；Weir
The both sides of 1 upper and lower side connect transmission belt 21 respectively, and the transmission belt 21 is driven by the idler wheel 22 on connecting rod 23, the connecting rod 23 by
The connecting rod support 32 at both ends supports at the top of weir notch, and the stepper motor 24 by being fixed on connecting rod support 32 drives, the stepping
Motor 24 can realize being precisely controlled for positive and negative both direction；The weir notch bottom inner portion be also provided with similary specification connecting rod 23 and
Idler wheel 22, transmission belt 21 are wound on by weir track 31 and transmission with holes 35 on two idler wheels 22 up and down, to ensure that it is accurate
Operating, the sectional dimension of the transmission with holes 35 are more slightly larger than 21 sectional dimension of transmission belt；The weir notch one side is equipped with and weir
The observation window 33 that track 31 connects is sealed with transparent glass and filled, and sets the first graduated scale 34 on the side of observation window 33, when
When the overcurrent mouth bottom of weir 1 is flushed with bottom of gullet, the zero point of the first graduated scale 34 is directed toward at 1 top of weir；The weir
Slot upstream is followed successively by settling pit 42 and sink 41, and 41 bed surface of vertical sink sets the second graduated scale 43 in 41 side wall of sink,
For reading the sink afterbody depth of water, the zero point of the second graduated scale 43 is flushed with 41 inner bottom surface of sink.
12 groups of experiment conditions are set in embodiment, and corresponding flow Q and afterbody target depth of water H is listed in the row of table 1 the 2nd, 3.Then root
According to the utility model, to the tail-gate height h result of calculations in requisition for adjusting as shown in the 5th row in table 1.
In test operation, after adjusting flow to a certain operating mode respective value, weir tail-gate height h is adjusted to corresponding
Calculated value, after waterflow stabilization, the difference for the slot tail depth of water and the target depth of water of being fetched water by graduated scale second reading, and by corresponding difference
Reversely adjust weir, you can the sink afterbody depth of water H set.Such as the sink afterbody depth of water is more equal than target after waterflow stabilization
Weir 1 is then reduced the adjusting that the afterbody depth of water can be realized in 2mm by the big 2mm of the uniform flow depth of water by stepper motor 24.
1 embodiment parameter computational chart of table
In the description of the utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can be mechanical connection or electrical connection；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, can be managed with concrete condition
Solve concrete meaning of the above-mentioned term in the utility model.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
, it is necessary to explanation in the description of the utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instructions such as " level ", " interior ", " outer " or position relationship be based on orientation shown in the drawings or position relationship or
The utility model product using when the orientation usually put or position relationship, be for only for ease of description the utility model and letter
Change description rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore it is not intended that limitation to the utility model.In addition, term " first ", " second ", " the 3rd " etc. are only used for area
Divide description, and it is not intended that instruction or hint relative importance.
Above description is merely a prefered embodiment of the utility model and oneself, be not intended to limit the utility model, for
For those skilled in the art, various modifications and changes may be made to the present invention, in the principle and technology of the utility model
In the range of thought, a variety of variations, modifications, equivalent substitutions and improvements etc. are carried out to these embodiments, should be included in this reality
Within new protection domain.
Claims (4)
1. a kind of weir type sink tail-gate that can accurately adjust aperture, including plate shaped weir and weir notch, it is characterised in that：
The weir top is equipped with to measure the right angled triangle overcurrent mouth of weir flow amount；Have in the weir notch on weir
The transmission of the weir track and confession conveyor belt motion of lower movement is with holes；It is equipped with and weir orbit connection in weir notch one side
Observation window, the first graduated scale, when weir overcurrent mouth bottom is flushed with bottom of gullet, weir top are equipped with beside observation window
It is directed toward the zero point of the first graduated scale in portion；The weir notch upstream is followed successively by settling pit and sink, vertical sink in the sink side wall
Bed surface sets to read the second graduated scale of the sink afterbody depth of water, and the zero point of the second graduated scale is flushed with sink inner bottom surface.
2. the weir type sink tail-gate according to claim 1 that can accurately adjust aperture, it is characterised in that：Further include biography
Dynamic system, the transmission system include transmission belt, upper connecting rod, upper roller, lower link and bottom roller, and the transmission belt wears excessive water
Weir track is with holes with transmission and is wound on upper roller and bottom roller, and the upper roller is connected with upper connecting rod, and the upper connecting rod is by weir
The connecting rod support support at groove top portion both ends, and the driving stepper motor by being fixed on connecting rod support, the lower link and lower rolling
Wheel is arranged on weir notch bottom inner portion.
3. the weir type sink tail-gate according to claim 1 that can accurately adjust aperture, it is characterised in that：The transmission
Sectional dimension with holes is slightly larger than the sectional dimension of transmission belt.
4. the weir type sink tail-gate according to claim 2 that can accurately adjust aperture, it is characterised in that：The observation
Window is sealed with transparent glass and filled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721520464.0U CN207435995U (en) | 2017-11-14 | 2017-11-14 | The weir type sink tail-gate of aperture can accurately be adjusted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721520464.0U CN207435995U (en) | 2017-11-14 | 2017-11-14 | The weir type sink tail-gate of aperture can accurately be adjusted |
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| Publication Number | Publication Date |
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| CN207435995U true CN207435995U (en) | 2018-06-01 |
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| CN201721520464.0U Active CN207435995U (en) | 2017-11-14 | 2017-11-14 | The weir type sink tail-gate of aperture can accurately be adjusted |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403265A (en) * | 2018-10-16 | 2019-03-01 | 中国水利水电科学研究院 | The experimental rig and test method that the unrestrained top of simulation is burst |
| CN111739404A (en) * | 2020-07-14 | 2020-10-02 | 王旭 | Weir flow simulation experiment device |
| CN112858124A (en) * | 2021-02-08 | 2021-05-28 | 南京宥安传感科技有限公司 | Water measuring weir capable of automatically measuring sand content of water flow |
| CN113008743A (en) * | 2021-02-26 | 2021-06-22 | 南京宥安传感科技有限公司 | Water measuring weir capable of automatically measuring sand content of water flow |
-
2017
- 2017-11-14 CN CN201721520464.0U patent/CN207435995U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109403265A (en) * | 2018-10-16 | 2019-03-01 | 中国水利水电科学研究院 | The experimental rig and test method that the unrestrained top of simulation is burst |
| CN111739404A (en) * | 2020-07-14 | 2020-10-02 | 王旭 | Weir flow simulation experiment device |
| CN111739404B (en) * | 2020-07-14 | 2022-05-20 | 王旭 | Weir flow simulation experiment device |
| CN112858124A (en) * | 2021-02-08 | 2021-05-28 | 南京宥安传感科技有限公司 | Water measuring weir capable of automatically measuring sand content of water flow |
| CN113008743A (en) * | 2021-02-26 | 2021-06-22 | 南京宥安传感科技有限公司 | Water measuring weir capable of automatically measuring sand content of water flow |
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