CN202081498U - Eccentric type curved weir intercepting well - Google Patents
Eccentric type curved weir intercepting well Download PDFInfo
- Publication number
- CN202081498U CN202081498U CN2011201507231U CN201120150723U CN202081498U CN 202081498 U CN202081498 U CN 202081498U CN 2011201507231 U CN2011201507231 U CN 2011201507231U CN 201120150723 U CN201120150723 U CN 201120150723U CN 202081498 U CN202081498 U CN 202081498U
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- China
- Prior art keywords
- catchpit
- chamber
- water outlet
- intercepting well
- sewage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000010865 sewage Substances 0.000 claims abstract description 41
- 239000007787 solid Substances 0.000 description 9
- 239000000725 suspension Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000008021 deposition Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009991 scouring Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Sewage (AREA)
Abstract
The utility model discloses an eccentric type curved weir intercepting well. A curved overflow weir is vertically arranged in a vertical well of the intercepting well and is used for dividing the intercepting well into an intercepting well chamber and an overflow well chamber, the cross section of the intercepting well chamber is circular, a sewage inlet is arranged at the lower end of the intercepting well chamber, an intercepted sewage outlet is arranged at the upper end of the intercepting well chamber, the inner wall on the outer side of the sewage inlet is tangent to the inner wall of the intercepting well chamber, and the inner diameter of the sewage inlet is one half of the inner diameter of the intercepting well chamber; and a sewage interception water outlet upflow pipe is vertically arranged in the intercepting well chamber, a lower port of the sewage interception water outlet upflow pipe is positioned within the scale height range between the top end and the bottom end of the sewage inlet, the geometric center of the lower port of the sewage interception water outlet upflow pipe is in coincidence with the central axial line of the intercepting well chamber, and an upper port of the sewage interception water outlet upflow pipe is communicated with the intercepted sewage outlet through a sewage interception water outlet transverse pipe. The eccentric type curved-sided weir intercepting well can reduce silts in the intercepting well and discharge redundant flow rate as soon as possible when the quantity of rainwater is large.
Description
Technical field
The utility model relates to the catchpit in the shutoff type combined drainage system, relates in particular to cut the pressure-bearing catchpit of dirty outlet pipe absolute altitude greater than water inlet pipe duct absolute altitude.
Background technology
City direct-discharging combined drainage system can cause serious water body and natural environment to pollute, and pollutes for the protection environment reduces, and counter-measure commonly used is that it is transformed into the shutoff type combined drainage system, and catchpit is one of them important ancillary structure.Traditional catchpit is the gravity current catchpit, and the dirty outlet pipe absolute altitude of its section is lower than into water pipe duct absolute altitude, and current are in the gravity current state in the catchpit.But in some cases, for example near the ordinary water level of the water bodys such as rivers the city is higher, the increasing of Jiang Di and riverine regional physical features causes original in line interflow pipe duct buried depth of going into the river very big, even reach more than 10 meters, for reducing difficulty of construction and cost, original direct-discharging interflow pipe duct dammed adopt the less relatively main that dams of buried depth often, thereby the pressure-bearing catchpit of dirty outlet pipe absolute altitude in the transformation process that dams, occur cutting greater than water inlet pipe duct absolute altitude.Sewage is in artesian condition in this catchpit, the catchpit type generally is designed to rectangle, and the water inlet pipe duct is positioned at the catchpit middle part, and overflow weir adopts rectangular weir, there are two main problems in it: promptly very easily produce alluvial in the well, rectangular weir is impeded drainage when amount of rainfall is big.
The utility model content
The purpose of this utility model provides a kind of eccentric type curved-sided weir catchpit that reduces to discharge as early as possible when alluvial and amount of rainfall are big in the catchpit unnecessary flow.
For achieving the above object, technical solution adopted in the utility model is: vertically be provided with the curve overflow weir in the well of this eccentric type curved-sided weir catchpit, described curve overflow weir is separated into catchpit chamber and overflow well chamber with catchpit, the cross section of described catchpit chamber is rounded, the lower end of described catchpit chamber is provided with sewage inlet, the upper end of described catchpit chamber is provided with the outlet of sewer that dams, the outside inwall of described sewage inlet and the inwall of catchpit chamber are tangent, and the internal diameter of described sewage inlet is less than half of the internal diameter of catchpit chamber; Cut dirty water outlet standpipe indoor vertically being provided with of described catchpit, the lower port of described section dirty water outlet standpipe is in the absolute altitude scope of the top of sewage inlet and bottom, the central axes of the geometric center of the lower port of described section dirty water outlet standpipe and described catchpit chamber, the upper port of described section dirty water outlet standpipe is communicated with by cutting dirty water outlet transverse tube with the outlet of sewer that dams.
Further, the indoor energy dissipating plate that is provided with of overflow well described in the utility model.
Further, the lower port of described in the utility model section dirty water outlet standpipe is bell mouth shape.
Compared with prior art, the utlity model has following beneficial effect:
(1) sewage inlet inserts the catchpit chamber from eccentric position,
MakeCurrent enter behind the circular catchpit chamber at the indoor formation eddy flow of well, in the stronger souring of the indoor formation of catchpit, make the solid suspension in the sewage be difficult for producing deposition;
(2) the indoor eddy flow flow field of catchpit makes solid suspension in the sewage be easy to collect in middle part, well chamber, and concentrates under the pressure of sewage to enter from lower port in well and cut a dirty outlet pipe and discharge, and can effectively reduce the alluvial of solid suspension in the catchpit;
(3) the weir length of curve overflow weir is 1.6 times of traditional rectangular weir, identical head down effect down its flow that passes through also be 1.6 times of rectangular weir, increased the discharge capacity of overflow weir greatly.
Description of drawings
Fig. 1 is the vertical view of the closure works system of the utility model catchpit;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the drought stream operating mode working face figure of the closure works system of the utility model catchpit;
Fig. 4 is the overfall working condition working face figure of the closure works system of the utility model catchpit;
Fig. 5 is the tangent detail drawing of sewage inlet and catchpit chamber of the utility model catchpit;
Among the figure, 1. curve overflow weir; 2. cut dirty water outlet standpipe; 3. cut dirty water outlet transverse tube; 4. lower port;
5. go up fixed support; 6. descend fixed support; 7. sewage inlet; 8. cut dirty main; 9. cut dirty pipe manhole; 10. energy dissipating plate; 11. overflow the water pipe canal; 12. catchpit chamber; 13. overflow well chamber; The outlet of sewer 14. dam; 21. lower port; 22. upper port; 71. sewage inlet outside inwall.
The specific embodiment
As depicted in figs. 1 and 2, vertically be provided with curve overflow weir 1 in the utility model catchpit, curve overflow weir 1 is separated into catchpit chamber 12 and overflow well chamber 13 with catchpit.
Wherein, the cross section of catchpit chamber 12 is rounded, and water is had ready conditions at the indoor formation eddy flow of catchpit.The lower end of catchpit chamber 12 is provided with sewage inlet 7, and the upper end of catchpit chamber 12 is provided with the outlet of sewer 14 that dams.
Shown in Fig. 1,3,4,5, the outside inwall 71 of sewage inlet 7 is tangent with the inwall of catchpit chamber 12, and the internal diameter of sewage inlet 7 makes that like this sewage inlet is eccentric water intake mode, so that current are at the indoor formation eddy flow of catchpit less than half of the internal diameter of catchpit chamber 12.The perimeter line speed and the scouring force of eddy flow are stronger, and this design can utilize the stronger scouring force of eddy flow greatly to reduce the deposition of solid suspension in catchpit chamber 12 in the sewage, and make solid suspension in the sewage come together in the centre of well chamber.
Vertically be provided with in catchpit chamber 12 and cut dirty water outlet standpipe 2, a section dirty water outlet standpipe 2 adopts from the water inlet of bottom, catchpit chamber and goes up to the mode that goes out to flow.The lower port 21 of cutting dirty water outlet standpipe 2 is in the absolute altitude scope of the top of sewage inlet 7 and bottom, cut the geometric center and the central axes of catchpit chamber 12 of the lower port 21 of dirty water outlet standpipe 2, the upper port 22 of cutting dirty water outlet standpipe 2 is communicated with by a section dirty water outlet transverse tube 3 with the outlet of sewer 14 that dams.The lower port 21 of cutting dirty water outlet standpipe 2 reaches the bottom position of catchpit chamber 12, so that can concentrating from lower port 21, the solid suspension in the middle of the catchpit chamber enters a section dirty water outlet standpipe 2 under the indoor bigger hydrostatic pressure of well, and enter and cut a dirty pipe manhole 9 from cutting a dirty water outlet transverse tube 3, be delivered to Sewage Plant by cutting a dirty main 8.
Under the drought stream operating mode, sewage all need be dammed enters in the main 8 that dams, and prevents that as far as possible solid suspension in the sewage is in the indoor deposition of catchpit.As shown in Figure 3, the utility model is under drought stream operating mode, sewage enters catchpit chamber 12 through sewage inlet 7 from eccentric position, and at the indoor formation eddy flow of circular catchpit, under the stronger scouring force effect of eddy flow periphery, solid suspension in the sewage of catchpit chamber 12 peripheries is difficult for deposition, and the speed and the scouring force at its middle part are less, solid suspension is concentrated relatively, and under the hydrostatic pressure effect of the indoor sewage of well, enter a section dirty water outlet standpipe 2, and enter a section dirty pipe manhole 9 from cutting a dirty water outlet transverse tube 3 through lower port 21.
Between flush period, inbound traffics will produce overflow when surpassing the amount of damming.As shown in Figure 4, the utility model is under overfall working condition, and 1 overflow enters overflow well chamber 13 to spillway discharge through curved-sided weir, through entering water body after 10 energy dissipatings of energy dissipating plate.Curve overflow weir 1 belongs to the part of circular catchpit chamber 12, and its weir length is 1.6 times of traditional rectangular weir, and following its flow that passes through of the following effect of identical head also is 1.6 times of rectangular weir, has increased the discharge capacity of overflow weir greatly.The end face absolute altitude of curve overflow weir 1 is lower than the end face absolute altitude of catchpit chamber 12, and the end face absolute altitude of curve overflow weir 1 calculates according to interception ratio to be determined.
Be provided with energy dissipating plate 10 in the overflow well chamber 13, the current energy dissipating that overflow is fallen avoids the bigger current of speed that the borehole wall and shaft bottom generation are washed away.
As preferred implementation of the present utility model, the lower port 21 of cutting dirty water outlet standpipe 2 is bell mouth shape, can improve the hydraulics of water outlet.
Of the present utility model section dirty water outlet standpipe 2 in catchpit chamber 12 by on fixed support 5 and following fixed support 6 fixed, can avoid unstability when flow greatly.
Of the present utility model section dirty water outlet transverse tube 3 cuts dirty pipe manhole 9 with the drainage pipe minimal design gradient aspect of corresponding caliber, produces alluvial with in avoiding managing.Cut the invert elevation (IE) of dirty water outlet transverse tube 3 in cutting dirty manhole 9 and need be higher than the maximum water surface absolute altitude that cuts in the dirty main 8, reflux in order to avoid produce.
Claims (3)
1. eccentric type curved-sided weir catchpit, it is characterized in that: in described catchpit, vertically be provided with curve overflow weir (1), described curve overflow weir (1) is separated into catchpit chamber (12) and overflow well chamber (13) with catchpit, the cross section of described catchpit chamber (12) is rounded, the lower end of described catchpit chamber (12) is provided with sewage inlet (7), the upper end of described catchpit chamber (12) is provided with the outlet of sewer that dams (14), the outside inwall (71) of described sewage inlet (7) and the inwall of catchpit chamber (12) are tangent, and the internal diameter of described sewage inlet (7) is less than half of the internal diameter of catchpit chamber (12); In described catchpit chamber (12), vertically be provided with and cut dirty water outlet standpipe (2), the lower port (21) of described section dirty water outlet standpipe (2) is in the absolute altitude scope of the top of sewage inlet (7) and bottom, the geometric center of the lower port (21) of described section dirty water outlet standpipe (2) and the central axes of described catchpit chamber (12), the upper port (22) of described section dirty water outlet standpipe (2) is communicated with by cutting dirty water outlet transverse tube with the outlet of sewer that dams (14).
2. eccentric type curved-sided weir catchpit according to claim 1 is characterized in that: be provided with energy dissipating plate (10) in the described overflow well chamber (13).
3. eccentric type curved-sided weir catchpit according to claim 1 and 2 is characterized in that: the lower port (21) of described section dirty water outlet standpipe (2) is bell mouth shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201507231U CN202081498U (en) | 2011-05-13 | 2011-05-13 | Eccentric type curved weir intercepting well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201507231U CN202081498U (en) | 2011-05-13 | 2011-05-13 | Eccentric type curved weir intercepting well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202081498U true CN202081498U (en) | 2011-12-21 |
Family
ID=45342136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201507231U Expired - Lifetime CN202081498U (en) | 2011-05-13 | 2011-05-13 | Eccentric type curved weir intercepting well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202081498U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261124A (en) * | 2011-05-13 | 2011-11-30 | 浙江大学 | Eccentric type curved weir intercepting well |
| CN103572826A (en) * | 2012-08-10 | 2014-02-12 | 烟台水泰和水科技有限公司 | Rainwater and sewage switching device applied to separate-system type rainwater pipeline |
-
2011
- 2011-05-13 CN CN2011201507231U patent/CN202081498U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261124A (en) * | 2011-05-13 | 2011-11-30 | 浙江大学 | Eccentric type curved weir intercepting well |
| CN103572826A (en) * | 2012-08-10 | 2014-02-12 | 烟台水泰和水科技有限公司 | Rainwater and sewage switching device applied to separate-system type rainwater pipeline |
| CN103572826B (en) * | 2012-08-10 | 2016-02-10 | 烟台水泰和水科技有限公司 | The dirty switching device shifter of a kind of rain for segregation system storm sewer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111221 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |