CN201588195U - Jet pipe for under-gate desilting of a hydraulic underwater falling gate - Google Patents
Jet pipe for under-gate desilting of a hydraulic underwater falling gate Download PDFInfo
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- CN201588195U CN201588195U CN2010201032632U CN201020103263U CN201588195U CN 201588195 U CN201588195 U CN 201588195U CN 2010201032632 U CN2010201032632 U CN 2010201032632U CN 201020103263 U CN201020103263 U CN 201020103263U CN 201588195 U CN201588195 U CN 201588195U
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- jet pipe
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- pipe
- jet
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Abstract
The utility model discloses a jet pipe for under-gate desilting of a hydraulic underwater falling gate. The pipe is cylindrical and two ends are open and the pipe is hollow. N upper open holes of same diameter are arranged in same distance in turn along the length direction of the pipe and n is a natural number; a lower open hole in same diameter of the upper open hole is arranged right below the 1/2 position of the circle center connection line of the two adjacent upper open holes and the center connection line of each upper open hole and the center connection line of the lower open hole are respectively parallel to the long border of the pipe. The jet pipe disturbs the under-gate flow because of different positions of the under-gate jet pipe jet holes and the disturbed flow state reaches the start flow rate of the under-gate slit and the jet pipe is suitable for hydraulic underwater falling gate under-gate desilting.
Description
Technical field
The utility model relates to jet pipe used for dredging and application process thereof under a kind of lock of hydraulic pressure underwater flap gate lock, belongs to the hydrodynamics technology field.
Background technology
Area, river mouth conveniently situation, water resource and various produce are all extremely abundant, are the treasured places of perching of human favor always.The mankind at this point multiply and live and counted several thousand, by means such as trade, shippings, make the area, river mouth become the economic center gradually, the population support who lives in this is numerous, life each other exchanges extensively, and it becomes the important gathering ground and the development ground of survival and development of mankind gradually.For the better utilization local resource reaches better is the people's service of area, river mouth, generally need set up backwater gate at the place, river mouth.
Gate is built beginning, it effectively protection against the tide store fresh water, firmly improve the demand that the upstream area, river mouth is expanded for the soil, for the upstream area development of industry and agriculture is made certain contribution.But along with the progress of time, retaining box silting downstream tidal barrier phenomenon just manifests gradually, all more or less the existence alluvials of the gate in each river mouth, some alluvial is lighter, some alluvial is serious, some in addition become silted up and extremely can not normally move.The problem of silting downstream tidal barrier is more and more outstanding, and the loss that it brings is also enlarging, and it is just seriously restricting the development of local economy.
So the measure of various desiltings is arisen at the historic moment, as waterpower dash to become silted up, manually dig that silt, motor vessel are dug that silt is dragged in silt, motor vessel, the Chao Chong that receives becomes silted up, curved cut-off, waterpower is towards the pool etc.
Though certain dredging effect is played in the measure of these desiltings, also just bringing into play acting at some current gate, it seems that totally these dredging measures all exist following shortcoming:
1, build that upstream flowrate reduces behind the lock, cause the upstream letdown flow to reduce, the water levels of upstream and downstream difference diminishes, and lets out that dashing becomes silted up has been difficult to guarantee that silt is flushed away down by simple.
2, measure such as mechanical desilting expends a large amount of manpower, material resources and financial resources, and the effect that plays is temporary transient, work timely at any time, is just a makeshift arrangement.
3, the broken original human landscape of ring or ecoscape are run counter to the desired harmonious development of local corresponding policy.
Summary of the invention
Goal of the invention:
The purpose of this utility model is at above-mentioned shortcoming, proposes a kind of dredging method of suitable hydraulic pressure underwater flap gate lock, under the condition of neither breaking the original humanity of ring, ecoscape, efficiently, reasonably realizes the cleaning of silt under the lock.
Technical scheme:
Jet pipe used for dredging under a kind of lock of hydraulic pressure underwater flap gate lock, body are cylindrical, and both ends open and body are hollow, and in a side of body, be provided with n the perforate that diameter is identical successively equally spacedly along the body length direction, n is a natural number; The line of centres of described perforate is parallel with the long limit of body.
Under circle center line connecting 1/2 place of every adjacent two perforates of jet pipe of the present utility model, also be provided with a following perforate identical with described opening diameter, the center of circle of following perforate becomes 30 °～60 ° with the circle center line connecting of its adjacent two perforates in top respectively.
The perforate of jet pipe of the present utility model is 20%～35% of a jet pipe caliber with the aperture of following perforate.
Jet pipe of the present utility model adopts organic plastics pipe or stainless steel tube.
Beneficial effect:
The jet pipe of this utility model is by the position difference of jet pipe jet orifice under the lock, and current under the lock are played the effect of disturbance, and disorderly fluidised form reaches the startup flow velocity of silt under the lock, along with letdown flow is flushed to the downstream at a distance.Be applicable to the desilting under the hydraulic pressure underwater flap gate lock lock, show that by experiment this jet pipe has the efficient height, be not subjected to the restriction of weather, geographical environment, advantages such as the about water resource of energy consumption trifle, its jet water source that is used for dash becoming silted up can be to receive water that tide gets etc., need not waste valuable tap water resource.
Description of drawings
Fig. 1: jet pipe lateral plan of the present utility model.
Fig. 2: jet pipe elevation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is elaborated:
As Fig. 1, shown in Figure 2, jet pipe used for dredging under the lock of hydraulic pressure underwater flap gate lock of the present utility model, body is cylindrical, both ends open and body are hollow, be provided with equally spacedly successively in a side of body, along the body length direction n diameter identical on perforate, n is a natural number; Under circle center line connecting 1/2 place of perforate on every adjacent two, also be provided with a following perforate identical with last opening diameter, the line of centres of described perforate on each and the line of centres of time perforate are parallel with the long limit of body respectively.The last perforate of jet pipe is 20%～35% of a jet pipe caliber with the aperture of following perforate.
The application process of jet pipe of the present utility model comprises the steps:
The identical jet pipe of width dimensions of A, making and hydraulic pressure underwater flap gate lock, and it is positioned under the hydraulic pressure underwater flap gate lock lock;
When B, placement, near applying, the one side of perforate is not identical with the direction of current bottom gate for the one side of perforate.
The jet orifice center line of C, jet pipe becomes 15 °～90 ° to place obliquely with the vertical line of gate.
The another kind of application process of jet pipe of the present utility model comprises the steps:
Make the identical long tube of width dimensions with hydraulic pressure underwater flap gate lock, the structure of long tube can be identical with the structure of jet pipe, also can be inequality, the jet pipe that has processed is arranged in order the long tube upper surface, and specifically arrangement mode is:
(1), vertically wide according to gate, and the length of selecting jet pipe for use is determined the quantity of jet pipe;
(2), selected jet pipe is equidistantly arranged, every jet pipe is laterally perpendicular with gate all, and the mouth of pipe of jet pipe is identical with water (flow) direction, and the perforate level of every adjacent two jet pipes and staggered relatively;
(3), the jet orifice center line with every jet pipe becomes 15 °～90 ° to place obliquely with the vertical line of gate.
Operating principle of the present utility model:
Circular turbulent jet has following character in the hydrostatic:
When diameter is the jet orifice jet of D, jet can be divided into The initial segment (comprising two parts in core space and mixed zone), changeover portion and main paragraph according to the form that flows.
The initial segment (in the x≤6.2D):
Core space u=u
0
The mixed zone
Main paragraph (x 〉=6.2D):
Flow velocity is distributed as on jet axis:
Wherein: D---the jet orifice diameter;
X---apart from the lateral coordinates of jet orifice;
U---on the arbitrary cross-section apart from the flow velocity at axis r place;
u
0---jet initial place flow velocity degree;
u
m---on the axis apart from the flow velocity at jet source x place;
b
1/2 2---flow velocity equals u
m/ 2 fluidic spaces point radial coordinate, it is wide to be called half value;
R---be in x＜6.2D scope, jet pipe is each section radius of 2 circular cones of being formed with the center line line of The initial segment end section up and down;
R---on the arbitrary cross-section apart from the distance of axis.
For realizing efficient, the energy-conservation desilting under the hydraulic pressure underwater flap gate lock lock, arrange that under lock jet pipe dashes silt.
Jet pipe Material Selection organic plastics pipe or stainless steel tube.Its selection is mainly poor according to the gate water levels of upstream and downstream, flow reaches ambient conditions on every side.
The manufacturing process of jet pipe is: hole according to certain arrangement mode on the pipe of selecting corresponding material.The boring arrangement mode is: beat the identical hole of several diameters successively side by side along the tube length direction, below adjacent two holes, a hole that diameter is identical is made a call in the place that is wired to 30 degree angles with two holes again.The jet pipe that has processed is arranged in order under the hydraulic pressure underwater flap gate lock lock.
Concrete arrangement mode is:
(1), laterally wide according to gate, the quantity of jet pipe is selected in decision for use.
(2), selected jet pipe is equidistantly arranged the horizontal placement of the every equal vertical floodgate of jet pipe.The perforate level of two adjacent jet pipes and staggered relatively.
(3), the jet orifice center line of every jet pipe should preferably become 75 degree to place obliquely with vertical line, prevents wall jet, reduces the momentum of impinging jet loss.
By the turbulent fluctuation acceleration of jet, the shoal materials under the hydraulic pressure underwater flap gate lock lock can well start and be swept away the downstream, to reach desilting, to subtract the effect of silt.
Claims (4)
1. jet pipe used for dredging under the lock of a hydraulic pressure underwater flap gate lock, body is cylindrical, both ends open and body are hollow, it is characterized in that: in a side of body, be provided with n the perforate that diameter is identical successively equally spacedly along the body length direction, n is a natural number; The line of centres of described perforate is parallel with the long limit of body.
2. jet pipe according to claim 1, it is characterized in that: under circle center line connecting 1/2 place of described every adjacent two perforates, also be provided with a following perforate identical with described opening diameter, the center of circle of described perforate down becomes 30 °～60 ° with the circle center line connecting of its adjacent two perforates in top respectively.
3. jet pipe according to claim 2 is characterized in that: described perforate is 20%～35% of a jet pipe caliber with the aperture of following perforate.
4. jet pipe according to claim 1 and 2 is characterized in that: jet pipe adopts organic plastics pipe or stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201032632U CN201588195U (en) | 2010-01-28 | 2010-01-28 | Jet pipe for under-gate desilting of a hydraulic underwater falling gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201032632U CN201588195U (en) | 2010-01-28 | 2010-01-28 | Jet pipe for under-gate desilting of a hydraulic underwater falling gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201588195U true CN201588195U (en) | 2010-09-22 |
Family
ID=42747966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201032632U Expired - Fee Related CN201588195U (en) | 2010-01-28 | 2010-01-28 | Jet pipe for under-gate desilting of a hydraulic underwater falling gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201588195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768986B (en) * | 2010-01-28 | 2011-08-03 | 河海大学 | Jet pipe used for dredging below hydraulic underwater horizontal gate and application method thereof |
-
2010
- 2010-01-28 CN CN2010201032632U patent/CN201588195U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768986B (en) * | 2010-01-28 | 2011-08-03 | 河海大学 | Jet pipe used for dredging below hydraulic underwater horizontal gate and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20100922 Termination date: 20180128 |