CN201417153Y - Parallel triangular weir - Google Patents
Parallel triangular weir Download PDFInfo
- Publication number
- CN201417153Y CN201417153Y CN2009200128211U CN200920012821U CN201417153Y CN 201417153 Y CN201417153 Y CN 201417153Y CN 2009200128211 U CN2009200128211 U CN 2009200128211U CN 200920012821 U CN200920012821 U CN 200920012821U CN 201417153 Y CN201417153 Y CN 201417153Y
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- weir
- triangular
- notch
- parallel
- channels
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Abstract
The utility model discloses a parallel triangular weir, which is provided with triangular weirs, weir front approach channels and a bottom surface. The weir front approach channels which have two arearranged in parallel, each channel corresponding one triangular weir, the two channels are separated via a partition board, wherein one channel is used frequently, a water inlet point of the other channel is closed through a movable water baffle, the partition board between the two channels is a metal board, one end of the partition board is fixed on a board between the two triangular weirs whilethe other end is fixed on a pile, the triangular pile and walls of the weir front approach channels are concrete structures, materials of the triangular weirs and the movable water baffle are metal, bakelite resin, plastics, pvc materials or organic glass materials, and each triangular weir is equipped with a water level sensor. The parallel triangular weir avoids errors caused by enlarged flow speed, and the two triangular weirs share one intelligent open channel flow meter to monitor flow rate when starting to measure simultaneously, thereby reducing labor intensity and realizing automationmanagement basically.
Description
Technical field
The utility model relates to a kind of equipment of measuring hydrology discharge, specifically a kind of parallel triangular-notch weir.
Background technology
The triangular-notch weir flow measurement method is widely used, and hydrology rainfall amount and rainwash effect are very important, and it can be regulated to a certain extent and delay flood, subdues flood peak, reduces flood frequency and peak value, thereby alleviates the generation of big flood.It still is comparatively ideal adopting triangular-notch weir to measure discharge at present, 90 ° of iron triangular-notch weirs of thin-walled is set in conjunction with ultrasonic water level gauge record rainwash process in the small watershed exit, is used to analyze the relation between rainfall amount and the rainwash.
Analyze by the basin historical summary, the ecological observation of forest and non-forest watershed hydrologic survey, forest runoff field contrast test and forest cover, verify water balance and dynamic mechanism in mountain region vegetation-soil-atmosphere, disclose the influence of different vegetation types and forest land structure, propose the quantitative effect relation of forest flood, low water and runoff volume to rainwater distribution, runoff composition.The selective analysis basin is to the mechanism of action of forest hydrology effect, solve the controlling element computational problem of forest hydrology simulation, develop the forest watershed hydrological distribution model that can reach realistic scale, utilize this model analysis to estimate forest decay and the influence of ecological construction to the basin hydrological environment, making a strategic decision for water resource variation prediction and ecological regulation and control provides scientific basis.
On low water less river and small watershed, there is not a large amount of silt to pass through, can build weir.Weir by the weir of overflow, before the weir flume (stilling basin) and protect low parts such as (bottoms of diversion Chi Qu) and form.It is different with the export-oriented shape to press weir crest, and weir can be divided into triangular-notch weir, cellar for storing things well triangular-notch weir etc.
The problem that exists: triangular-notch weir promptly produces error when asymptotic flow velocity 0.25 meter per second of current, strengthen with flow velocity, and error also increases, and reaches to cause data to lose when overflowing the weir to survey.
The utility model content
At above shortcomings part in the prior art, the technical problems to be solved in the utility model provides a kind of avoiding and causes the parallel triangular-notch weir that loses survey because flow velocity strengthens the error and the weir that produce.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of parallel triangular-notch weir of the utility model has flume and bottom surface before triangular-notch weir, the weir, and flume is two before the described weir, the parallel setting, every corresponding triangular-notch weir of canal, separate by dividing plate between two canals, wherein a canal is commonly used, and the water entry of another canal is by one movable grade of water plate sealing.
Dividing plate between two canals is a sheet metal, and an end is fixed on two plates between the triangular-notch weir, and the other end is fixed on the pile; The canal wall of flume is an xoncrete structure before described triangle stake and the weir; Described triangular-notch weir is metal, bakelite, plastics, pvc material or pmma material with the material of movable shelves water plate; Triangular-notch weir commonly used is equipped with level sensor.
The utlity model has following have a mind to effect and advantage:
1. avoid because flow velocity strengthens the error that produces.Because the utility model makes a triangular-notch weir into parallel two triangular-notch weirs, when a triangular-notch weir overflows the weir, two triangular-notch weirs are enabled simultaneously, divide two triangular-notch weirs to measure simultaneously in current, data on flows is not noted with can not leaking fully, avoided strengthening the error and the weir that produce and cause mistake to survey by flow velocity.
2. when two triangular-notch weirs started measurement simultaneously, shared open channel intelligent flow meter monitoring got final product.This flowmeter is furnished with the disk-installed type flow monitor instrument, can on-the-spotly show that available notebook computer extracts.
3. minimizing labour intensity is realized automatic management substantially.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of parallel triangle of the utility model has flume 8 before two parallel weirs that are provided with, and every corresponding triangular-notch weir of canal separates by dividing plate 4 between two canals, and wherein a canal is commonly used, and the water entry of another canal is by movable grade water plate 6 sealings; Dividing plate 4 between two canals is a sheet metal, and an end is fixed on two plates between the triangular-notch weir with movable set collar 7, and the other end is fixed on the pile 5 (present embodiment adopts the triangle stake).
In the present embodiment, the dividing plate 4 between two canals adopts sheet metal, and the canal wall 3 of flume 8 is an xoncrete structure before triangle stake 5 and the weir, and triangular-notch weir is metal, bakelite, plastics, pvc material or pmma material with movable shelves water sheet material material.
The water-carrying section of triangular-notch weir is a vee, and its structure as shown in Figure 1.Should observe following rule by situation when building weir:
1. in order to make down the water yield of oozing reduce to minimum degree, low plate should be built fluid-tight water stop and board wall, preferably extends aquiclude; 0.5 meter on riverbank is stretched in the wall both sides that meet water, to guarantee and natural riverbank close-coupled.Underwater bed must grout a segment distance (being generally 3 meters), to prevent scour, influences buildings perpendicular to average flow direction and safety;
2. the weir wall should be smooth, and perpendicular to average flow direction with perpendicular to the water surface.The flow dynamic axis should be by the symcenter of crest of weir in the plane, make the weir before current linearly flow;
3. during by maximum flow, the asymptotic flow speed before the weir preferably is no more than 0.25 meter per second; When overflow, water level should be lower than weir crest forever under the weir;
4. crest of weir should be rectangular in shape, and its thickness is not more than 1 millimeter, and the dip plane of crest of weir should be downstream, and weir crest should be less than 0.2 meter at the bottom of exceeding river bed before the weir or flume;
5. the weir wall should polish, and except that guaranteeing certain level and smooth finish, answers bepaint to prevent to get rusty, and during less than 5-8 centimetre, the flowing water tongue of crest of weir can freely be lost at head, and the unlikely Yan Bishang that is attached to.
Normal discharge is a flow rate of water flow during less than 0.25 meter per second, finishes level measuring by the triangular-notch weir 1 that infrared probe 2 is housed, and another is from flume water entry closed state at ordinary times.When flow rate of water flow will be greater than 0.25 meter per second, promptly carry out parallel triangular-notch weir and finish flow measurement.Before flow will overflow the weir, at first movable set collar on the triangle spud pile 57 and the movable set collar 7 on the flume weir wall 3 are opened simultaneously, this moment, runoff will divide two water channels flume 8 before the weir to flow to triangular-notch weir 1 naturally, again the movable set collar 7 at water-stop sheet 4 two in the middle of the flume is opened simultaneously, become the situation on a canal two weirs at this moment by an original flume, parallel triangular-notch weir flow measurement formally begins.
Because of flow measurement scene or small watershed in mountain are generally far away apart from electric power facility, construction of line cost is higher, the special solar electric power supply system that is equipped with.This electric power system is made up of solar panels 11 and storage battery 10, and measuring sensor is a level sensor, promptly responds to infrared probe 2, and record is to be finished by the integrated flow display.When two triangular-notch weirs started measurement simultaneously, shared open channel intelligent flow meter monitoring got final product.This flowmeter is furnished with the disk-installed type flow monitor instrument, can on-the-spotly show that available notebook computer extracts.
The flow formula of triangular-notch weir flume is:
Q＝Ah
B (cm
3/s)
In the formula: Q is the flow by triangular-notch weir, and A, B are the calibration constant, and h is a water level,
Be respectively triangular-notch weir weir crest water level (actual measurement) and weir crest elevation (bit constant during experiment).
Claims (5)
1. parallel triangular-notch weir, have flume and bottom surface before triangular-notch weir, the weir, it is characterized in that: flume before the described weir (8) is two, the parallel setting, every corresponding triangular-notch weir (1) of canal, separate by dividing plate (4) between two canals, wherein a canal is commonly used, and the water entry of another canal is by one movable grade of water plate (6) sealing.
2. by the described parallel triangular-notch weir of claim 1, it is characterized in that: the dividing plate between two canals (4) is a sheet metal, and an end is fixed on two plates between the triangular-notch weir, and the other end is fixed on the pile (5).
3. by the described parallel triangular-notch weir of claim 2, it is characterized in that: the canal wall (3) of flume (8) is an xoncrete structure before described pile (5) and the weir.
4. by the described parallel triangular-notch weir of claim 1, it is characterized in that: described triangular-notch weir (1) is metal, bakelite, plastics, pvc material or pmma material with movable shelves water plate (6) material.
5. by the described parallel triangular-notch weir of claim 1, it is characterized in that: described triangular-notch weir (1) is equipped with level sensor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200128211U CN201417153Y (en) | 2009-04-10 | 2009-04-10 | Parallel triangular weir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200128211U CN201417153Y (en) | 2009-04-10 | 2009-04-10 | Parallel triangular weir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201417153Y true CN201417153Y (en) | 2010-03-03 |
Family
ID=41793576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200128211U Expired - Fee Related CN201417153Y (en) | 2009-04-10 | 2009-04-10 | Parallel triangular weir |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201417153Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944266A (en) * | 2012-11-29 | 2013-02-27 | 河海大学 | Open channel water meter based on stage-discharge relation |
| CN109297770A (en) * | 2018-11-27 | 2019-02-01 | 辽宁工程技术大学 | A kind of dry land rainwash collection device |
| CN109752053A (en) * | 2019-03-04 | 2019-05-14 | 北京建筑大学 | The inlet for stom water flow measurement device of energy auto-flushing |
-
2009
- 2009-04-10 CN CN2009200128211U patent/CN201417153Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944266A (en) * | 2012-11-29 | 2013-02-27 | 河海大学 | Open channel water meter based on stage-discharge relation |
| CN109297770A (en) * | 2018-11-27 | 2019-02-01 | 辽宁工程技术大学 | A kind of dry land rainwash collection device |
| CN109752053A (en) * | 2019-03-04 | 2019-05-14 | 北京建筑大学 | The inlet for stom water flow measurement device of energy auto-flushing |
| CN109752053B (en) * | 2019-03-04 | 2024-03-26 | 北京建筑大学 | Automatic flushing gutter inlet flow measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100303 Termination date: 20110410 |