CN104457859A - Method for changing shape of water passing section of measuring weir and measuring weir structure - Google Patents
Method for changing shape of water passing section of measuring weir and measuring weir structure Download PDFInfo
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- CN104457859A CN104457859A CN201410633932.XA CN201410633932A CN104457859A CN 104457859 A CN104457859 A CN 104457859A CN 201410633932 A CN201410633932 A CN 201410633932A CN 104457859 A CN104457859 A CN 104457859A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 23
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract 1
- 241001671556 Alstonia macrophylla Species 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses a method for changing the shape of the water passing section of a measuring weir and a measuring weir structure. The method is that a pair of detachable blades 4 is arranged on the upstream surface of a trapezoidal weir flow plate 2 of the existing water measuring weir 1, and the tops of the detachable blades are hinged with two vertexes of a trapezoidal gap of the trapezoidal weir flow plate through a rotating shaft 7; the pair of detachable blades are symmetrically arranged, and the side edges of the detachable blades are connected with the side edge of the water measuring weir through the opening and closing device 5; the detachable blade is pushed to be closed towards the middle through the opening and closing device to form a triangular water passing section 9, or the detachable blade is pulled to be opened towards two sides to open a trapezoidal notch on the trapezoidal weir flow plate to form a trapezoidal water passing section 8. The invention pushes the pair of detachable blades to close or open through the opening and closing device, and when the detachable blades are closed, the original trapezoidal water passing section is converted into a triangular water passing section. Therefore, the flow cross section of the measuring weir can be changed according to the flow passing through the measuring weir, and the flow measurement precision is improved. The defects of the prior art are well solved.
Description
Technical field
the present invention relates to a kind of method and weir structure of converted quantity mill weir water-carrying section shape, belong to flow measurement technology field in Hydraulic and Hydro-Power Engineering.
Background technology
for understanding and grasping the flow in ditch in Hydraulic and Hydro-Power Engineering, usually need set amount mill weir on ditch.Existing weir generally includes weir notch, is provided with vertical weir flow plate in weir notch, and vertical weir flow plate is provided with breach, make current by breach by time there is the character of sharp-edged weir flow.Be bigger than most sluice depths in distance 3 ~ 5 times, weir flow plate upstream and establish water gauge or weir flow meter, according to water gauge or instrument readings, flow can be obtained by correlation formula or stage-discharge chart drawn in advance.Notch geometry on current weir flow plate mostly is triangle or trapezoidal: the drift angle of vee is downward, and drift angle is generally the right angle of 90 °; The section of trapeze cut is generally a trapeze cut wide at the top and narrow at the bottom, and the side of trapeze cut is generally the hypotenuse that degree of tilt is 4:1.In order to improve the precision of measurement, adopt free overflow as far as possible.
in Practical Project, because the seepage flow of Project Areas is by impact that is outside and internal environment, it is the process of a dynamic change, namely performance be a certain time point or period seepage flow flow very large, and in other period, seepage flow flow is very little again, therefore needs the seepage flow flow of an accurate survey engineering district time period, thus makes counter-measure timely and effectively.Notch geometry on standing crop mill weir vertical weir flow plate is changeless.When notch geometry is triangle, obtaining higher head compared with during low discharge, can there is higher measurement accuracy, but when flow is larger, measuring accuracy can not be met because its measurement range is limited; If when the notch geometry on weir vertical weir flow plate is trapezoidal, inflow-rate of water turbine ability improves, and can meet the measuring accuracy compared with large discharge, but when flow is less, measuring accuracy is lower.
Summary of the invention
the object of the invention is to, a kind of method and weir structure of converted quantity mill weir water-carrying section shape is provided, only has a kind of shape water-carrying section to solve standing crop mill weir, thus cannot meet the problem of different stage-discharge record precision.
technical scheme of the present invention:
the method of a kind of converted quantity mill weir water-carrying section shape of the present invention is, the method arranges a pair detachable blade at the trapezoidal weir flow plate upstream face of standing crop mill weir, and detachable vane tip is hinged through trapeze cut two summit of rotation axis and trapezoidal weir flow plate; A pair detachable blade is symmetrical arranged, and detachable blade side is connected with weir side through headstock gear; Promote detachable blade by headstock gear and form triangle water-carrying section to intermediate closed, or pull detachable blade to form trapezoidal water-carrying section to the both sides unlatching trapeze cut got out of the way on trapezoidal weir flow plate.
in preceding method, the base angle of described triangle water-carrying section is 90 °.
in preceding method, described trapezoidal water-carrying section is that Xin Pulai is trapezoidal, and its hypotenuse is 4:1 in the rake ratio of short transverse.
in preceding method, the described closing face of a pair detachable blade and the upstream face of trapezoidal weir flow plate are equipped with sealing piece; The sealing at gap place is connected when being in triangle water-carrying section with increasing amount mill weir.
in preceding method, described trapezoidal weir flow plate upstream is provided with weir flow meter; The signal output part of weir flow meter is connected through the input end of cable with external signal treating apparatus; Reaction is controlled so that monitor flow in real time and make fast according to monitor data.
the weir structure of the of the present invention a kind of converted quantity mill weir water-carrying section shape formed as stated above is that this structure comprises weir, is provided with trapezoidal weir flow plate in weir; Trapeze cut two summit of described trapezoidal weir flow plate is hinged through the summit of rotation axis and a pair detachable blade; The side of a pair detachable blade is connected through the side of headstock gear with detachable blade.
in aforementioned quantities mill weir structure, the trapeze cut edge of described trapezoidal weir flow plate is dip plane, and dip plane downstream tilts 45 ° and forms hydraucone trapeze cut.
in aforementioned quantities mill weir structure, the described closing face of a pair detachable blade and the upstream face of trapezoidal weir flow plate are equipped with sealing piece.
in aforementioned quantities mill weir structure, described trapezoidal weir flow plate upstream is provided with weir flow meter; The signal output part of weir flow meter is connected through the input end of cable with external signal treating apparatus.
owing to have employed technique scheme, the present invention compared with prior art, the trapezoidal weir flow plate adapting to maximum flow is arranged to by the weir flow plate of weir by the present invention, and on trapeze cut two summit of trapezoidal weir flow plate hinged a pair detachable blade, promote a pair detachable blade by headstock gear close or open, time closed, original trapezoidal water-carrying section is transformed into triangle water-carrying section.Thus according to the water-carrying section of the flow knots modification mill weir of throughput mill weir, thus the precision of flow measurement can be improved.Well solve the deficiencies in the prior art.
Accompanying drawing explanation
the structural representation that Fig. 1 is water section of the present invention when being trapezoidal;
the structural representation that Fig. 2 is water section of the present invention when being triangle;
fig. 3 is the structural representation of trapezoidal weir flow plate downstream face;
fig. 4 is the front view of Fig. 3;
fig. 5 is the vertical view of Fig. 4;
fig. 6 is A-A cut-open view in Fig. 5.
being labeled as in accompanying drawing: 1-weir, the trapezoidal weir flow plate of 2-, 3-sealing piece, the detachable blade of 4-, 5-headstock gear, 6-weir flow meter, 7-rotation axis, the trapezoidal water-carrying section of 8-, 9-triangle water-carrying section, 10-dip plane.
Embodiment
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
the method of a kind of converted quantity mill weir water-carrying section shape of the present invention is, as depicted in figs. 1 and 2: the method arranges a pair detachable blade 4 at trapezoidal weir flow plate 2 upstream face of standing crop mill weir 1, detachable blade 4 top is hinged with trapeze cut two summit of trapezoidal weir flow plate 2 through rotation axis 7; A pair detachable blade 4 is symmetrical arranged, and detachable blade 4 side is connected with weir 1 side through headstock gear 5; Promote detachable blade 4 by headstock gear 5 and form triangle water-carrying section 9 to intermediate closed, the base angle of triangle water-carrying section 9 is 90 °; Detachable blade 4 can be pulled to open to both sides the trapeze cut got out of the way on trapezoidal weir flow plate 2 by headstock gear 5 and form trapezoidal water-carrying section 8, trapezoidal water-carrying section 8 is that Xin Pulai is trapezoidal, and its hypotenuse is 4:1 in the rake ratio of short transverse.The closing face of a pair detachable blade 4 and the upstream face of trapezoidal weir flow plate 2 are equipped with sealing piece 3; The sealing at gap place is connected when being in triangle water-carrying section 9 with increasing amount mill weir 1.Trapezoidal weir flow plate 2 upstream is provided with weir flow meter 6; The signal output part of weir flow meter 6 is connected through the input end of cable with external signal treating apparatus; Reaction is controlled so that monitor flow in real time and make fast according to monitor data.
the weir structure of the of the present invention a kind of converted quantity mill weir water-carrying section shape formed according to the method described above is that as depicted in figs. 1 and 2, this structure comprises weir 1, is provided with trapezoidal weir flow plate 2 in weir 1; Trapeze cut two summit of described trapezoidal weir flow plate 2 is hinged through the summit of rotation axis 7 and a pair detachable blade 4; The side of a pair detachable blade 4 is connected through the side of headstock gear 5 with detachable blade 4.The trapeze cut edge of trapezoidal weir flow plate 2 is dip plane 10, and dip plane 10 downstream tilts 45 ° and forms hydraucone trapeze cut.The closing face of a pair detachable blade 4 and the upstream face of trapezoidal weir flow plate 2 are equipped with sealing piece 3.Trapezoidal weir flow plate 2 upstream is provided with weir flow meter 6; The signal output part of weir flow meter 6 is connected through the input end of cable with external signal treating apparatus.
Embodiment
during concrete enforcement, weir 1 can be located on the straight-line segment of hydraulic engineering Box Drain, makes the trapezoidal weir flow plate 2 on weir 1 vertical with inflow direction.Weir 1 and trapezoidal weir flow plate 2 are steel plate product.Trapezoidal weir flow plate 2 is provided with a pair detachable blade 4, and a pair detachable blade 4 can rotate along the upper summit of two of trapezoidal weir flow plate 2, by the rotation of detachable blade 4, original trapezoidal water-carrying section 8 is carried out partial occlusion and converts triangle water-carrying section 9 to.Detachable blade 4 is connected with headstock gear 5, and headstock gear 5 can adopt hydraulic pressure or pneumatic linear actuator.By headstock gear 5, two pieces of detachable blades 4 are closed completely, form triangle water-carrying section 9, image data is inputted external reception end by the weir flow meter 6 being simultaneously arranged at upstream side, calculate real-time water flow, when the water flow calculated is larger, namely when in weir 1, upper pond level reaches the limiting water level on triangle weir, by headstock gear 5, two pieces of detachable blades 4 are opened completely, by the trapezoidal weir plate of the fixed Xin Pulai of trapezoidal weir flow plate 2() overcurrent, image data is inputted external reception end by the weir flow meter 6 being simultaneously arranged at upstream side, calculate real-time water flow, when the water flow calculated returns within the limiting water level of triangle weir, by headstock gear 5, two pieces of detachable blades 4 are closed completely, form triangle weir plate overcurrent, repeat said process, image data is inputted external reception end by the weir flow meter 6 namely by being arranged at upstream side, calculate real-time water flow, according to water flow size, control the folding of two pieces of detachable blades 4, a kind of Novel adjustable weir is made to can be implemented in real-time conversion between triangle weir and Xin Pulai Cipolletti weir, with reach be no matter comparatively large discharge or comparatively low discharge time, the equal object that can ensure higher measurement accuracy.
instant invention overcomes standing crop mill weir to be just difficult to change its form once setting completed, the measurement accuracy within the scope of certain flow can only be controlled and cannot meet compared with large discharge and the deficiency compared with measuring accuracy during low discharge simultaneously.The present invention is when implementing, substantially quantities and expense need not be increased, can realize weir can according to the size adjustment weir flow plate form of water flow, the weir flow plate of different size can be changed simultaneously according to different requirement of engineering at any time, and then accurately measure the seepage flow flow of each time period under the prerequisite meeting the different demand of engineering.Structure of the present invention is simple, and applied widely, cost of manufacture is low, installs and uses simple and convenient.According to the size adjustment weir flow plate form of water flow, have the advantage of triangle weir and Xin Pulai Cipolletti weir concurrently, measurable range is large, be no matter comparatively large discharge or comparatively low discharge time, all can ensure higher measuring accuracy.The present invention can change the blade of different size at any time, and simple and quick, thus meets the needs of different engineering.The present invention adopts the mode of Monitoring Data automation collection, having the image data accurately quick feature with processing data precise and high efficiency, increasing work efficiency widely.
Claims (9)
1. the method for a converted quantity mill weir water-carrying section shape, it is characterized in that: the method arranges a pair detachable blade (4) at trapezoidal weir flow plate (2) upstream face of standing crop mill weir (1), detachable blade (4) top is hinged with trapeze cut two summit of trapezoidal weir flow plate (2) through rotation axis (7); A pair detachable blade (4) is symmetrical arranged, and detachable blade (4) side is connected with weir (1) side through headstock gear (5); Promote detachable blade (4) by headstock gear (5) and form triangle water-carrying section (9) to intermediate closed, or pull detachable blade (4) to form trapezoidal water-carrying section (8) to the both sides unlatching trapeze cut got out of the way on trapezoidal weir flow plate (2).
2. the method for converted quantity mill weir water-carrying section shape according to claim 1, is characterized in that: the base angle of described triangle water-carrying section (9) is 90 °.
3. the method for converted quantity mill weir water-carrying section shape according to claim 2, is characterized in that: described trapezoidal water-carrying section (8) for Xin Pulai trapezoidal, its hypotenuse is 4:1 in the rake ratio of short transverse.
4. the method for converted quantity mill weir water-carrying section shape according to claim 3, is characterized in that: the described closing face of a pair detachable blade (4) and the upstream face of trapezoidal weir flow plate (2) are equipped with sealing piece (3); The sealing at gap place is connected when being in triangle water-carrying section (9) with increasing amount mill weir (1).
5. the method for converted quantity mill weir water-carrying section shape according to claim 4, is characterized in that: described trapezoidal weir flow plate (2) upstream is provided with weir flow meter (6); The signal output part of weir flow meter (6) is connected through the input end of cable with external signal treating apparatus; Reaction is controlled so that monitor flow in real time and make fast according to monitor data.
6., by a weir structure for the converted quantity mill weir water-carrying section shape of method formation described in the arbitrary claim of Claims 1 to 5, comprise weir (1), in weir (1), be provided with trapezoidal weir flow plate (2); It is characterized in that: trapeze cut two summit of described trapezoidal weir flow plate (2) is hinged with the summit of a pair detachable blade (4) through rotation axis (7); The side of a pair detachable blade (4) is connected through the side of headstock gear (5) with detachable blade (4).
7. the weir structure of converted quantity mill weir water-carrying section shape according to claim 6, it is characterized in that: the trapeze cut edge of described trapezoidal weir flow plate (2) is dip plane (10), and dip plane (10) downstream tilts 45 ° and forms hydraucone trapeze cut.
8. the weir structure of converted quantity mill weir water-carrying section shape according to claim 7, is characterized in that: the described closing face of a pair detachable blade (4) and the upstream face of trapezoidal weir flow plate (2) are equipped with sealing piece (3).
9. the weir structure of converted quantity mill weir water-carrying section shape according to claim 8, is characterized in that: described trapezoidal weir flow plate (2) upstream is provided with weir flow meter (6); The signal output part of weir flow meter (6) is connected through the input end of cable with external signal treating apparatus.
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| CN201410633932.XA CN104457859A (en) | 2014-11-12 | 2014-11-12 | Method for changing shape of water passing section of measuring weir and measuring weir structure |
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| CN201410633932.XA CN104457859A (en) | 2014-11-12 | 2014-11-12 | Method for changing shape of water passing section of measuring weir and measuring weir structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403269A (en) * | 2015-12-03 | 2016-03-16 | 中国科学院测量与地球物理研究所 | Adjustable surface runoff monitoring device |
| CN108335606A (en) * | 2018-02-11 | 2018-07-27 | 河海大学 | A kind of multi-functional sharp-crested weir weir flow device suitable for teaching experiment |
| CN108411863A (en) * | 2018-03-06 | 2018-08-17 | 河北海王水工机械有限公司 | A kind of triangle weir gate |
| CN109763461A (en) * | 2018-12-21 | 2019-05-17 | 河海大学 | A kind of inflatable weir |
| CN113622376A (en) * | 2021-08-23 | 2021-11-09 | 武汉量水科技有限公司 | Intelligent water measuring weir based on 5G |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403269A (en) * | 2015-12-03 | 2016-03-16 | 中国科学院测量与地球物理研究所 | Adjustable surface runoff monitoring device |
| CN105403269B (en) * | 2015-12-03 | 2018-10-30 | 中国科学院测量与地球物理研究所 | Adjustable rainwash monitoring device |
| CN108335606A (en) * | 2018-02-11 | 2018-07-27 | 河海大学 | A kind of multi-functional sharp-crested weir weir flow device suitable for teaching experiment |
| CN108411863A (en) * | 2018-03-06 | 2018-08-17 | 河北海王水工机械有限公司 | A kind of triangle weir gate |
| CN109763461A (en) * | 2018-12-21 | 2019-05-17 | 河海大学 | A kind of inflatable weir |
| CN113622376A (en) * | 2021-08-23 | 2021-11-09 | 武汉量水科技有限公司 | Intelligent water measuring weir based on 5G |
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Application publication date: 20150325 |