CN108487410B - Flow-dividing type rainwater storage tank flow dividing pipe offset adjusting device and adjusting method - Google Patents
Flow-dividing type rainwater storage tank flow dividing pipe offset adjusting device and adjusting method Download PDFInfo
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- CN108487410B CN108487410B CN201810307249.5A CN201810307249A CN108487410B CN 108487410 B CN108487410 B CN 108487410B CN 201810307249 A CN201810307249 A CN 201810307249A CN 108487410 B CN108487410 B CN 108487410B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/002—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells
- E03F1/003—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells via underground elongated vaulted elements
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/101—Dedicated additional structures, interposed or parallel to the sewer system
Abstract
The invention discloses a device and a method for adjusting the offset of a shunt pipe of a shunt-type rainwater storage tank. The SWMM is used for carrying out simulation analysis on a drainage system containing the shunting type rainwater regulating pool, and the pipe diameter of a shunting rainwater pipe and the rainwater shunting pipe offset corresponding to the situation that rainstorm in different reappearance periods reaches the expected peak clipping effect are determined. A rectangular rainwater diversion gallery is adopted to connect the rainwater drainage pipeline system with the regulating and storing pool, so that the diversion pipe is deflected to move downwards from the rainwater diversion well to the tail end of the diversion gallery; designing and installing an offset adjustable orifice plate device, wherein the aperture of the offset adjustable orifice is equal to the pipe diameter of the shunt pipe so as to achieve the shunt effect equal to that of the shunt pipe; the offset adjustable orifice plate device is arranged at the tail end of the diversion gallery, and the bolts which are fixed on the storage pond wall and the guide groove of the device bottom plate are used for extruding and fixing the orifice plate on the device bottom plate, so that the effects of adjusting the offset by the diversion pipe and preventing leakage of the adjustable orifice plate device are achieved.
Description
Technical Field
The invention belongs to the technical field of urban rainwater drainage systems, and particularly relates to a device for adjusting the offset of a shunt tube of a shunt rainwater storage tank, and also relates to a method for adjusting the offset of the shunt tube of the shunt rainwater storage tank.
Background
In the process of sponge city construction and low-influence development and design, the peak value of runoff of rainwater generated when a construction area bears heavy rain in a certain reappearance period after development does not exceed the peak value before development is a very important evaluation index. Generally, lid (low Impact development) combination measures are required to make the construction area meet the requirement. Among these measures, the rainwater regulation and storage tank is an essential important facility, and the conventional split-flow rainwater regulation and storage tank makes the rainwater shunt pipe bottom higher than the rainwater pipe bottom h (offset) of the downstream of the shunt well, so that the regulation and storage volume required for dealing with the heavy rain in a specific reoccurrence period is minimized.
The result of simulation analysis of rainfall runoff peak clipping effect of LID combined measures containing a shunting-type rainwater storage tank by using SWMM shows that if the rainwater storage tank is initially set with a standard, namely the volume of the rainwater storage tank is initially set, the rainstorms with the recurrence period P of 1a, 2a, 5a, 10a and 20a are dealt with, the optimal offsets of the rainstorms are different, and in order to deal with rainstorms with different rainstorms, the offsets of the rainstorms need to be adjusted in advance, so that the optimal peak clipping effect of low-influence development can be achieved.
For a traditional shunting type rainwater storage tank, determining the offset h of a shunt pipe required for reducing the rainwater runoff peak value when rainfall is performed in a specific recurrence period according to simulation calculation, designing and laying the shunt pipe with the offset h from a rainwater shunt well, and shunting part of rainwater to the storage tank, thereby reducing the rainwater flow peak value of a pipeline at the downstream of an inspection well. The main problems are as follows: because the positions of the rainwater pipe and the shunt pipe on the upstream and the downstream of the inspection well are fixed, h can not be adjusted, and the shunt pipe can not obtain the optimal rainwater runoff peak clipping effect when the shunt pipe is used for rainfall in different reappearance periods; because the offset of the shunt tubes is not adjustable, the required rainwater storage tank has to be designed according to the most unfavorable condition and has larger volume.
Disclosure of Invention
The invention aims to provide a method for adjusting the offset of a shunt pipe of a shunt type rainwater storage tank, which is easy to implement and simple and convenient to operate; the rainwater diversion well is connected with the rainwater storage tank by adopting the rainwater diversion gallery, and the offset adjustment is realized by an offset adjusting device arranged at the tail end of the diversion gallery. Due to the fact that the offset is adjustable, under the condition that the volume of the rainwater storage tank is initially determined, the better effect of reducing the flow peak value of a pipeline downstream of the rainwater inspection well can be achieved in response to rainfall in different reappearance periods; if the volume of the rainwater storage tank is not preliminarily determined, aiming at rainfall in different reappearance periods, the corresponding volume of the storage tank can be obtained by adjusting the offset, so that the finally determined volume of the rainwater storage tank capable of coping with the rainstorm in different reappearance periods is the minimum.
The invention also aims to provide a flow-dividing type rainwater storage tank flow-dividing pipe offset adjusting orifice plate device which is simple in structure and convenient to use; the hole plate is provided with holes with the same pipe diameter as the original shunt pipe, the hole plate is inserted into the guide groove, the hole plate can be moved up and down manually according to requirements, electromechanical facilities are not used, and the maintenance cost of the movable hole plate facilities can be reduced; according to the specific heavy rain that needs to deal with, reciprocate the orifice plate, make the hole bottom be higher than the distance of reposition of redundant personnel corridor bottom equal preset offset, utilize the screw of taking the inside screw on bolt and the guide way, with the orifice plate extrusion fixed on the device bottom plate, reach the fixed orifice plate and prevent the effect of rainwater side leakage, adopt mechanical and manual means to operate, also do not use electromechanical facility, be convenient for operate and reducible fixed orifice plate facility's maintenance cost.
In order to achieve the purpose, the invention adopts the following technical measures:
the offset adjusting device comprises an offset adjusting orifice plate device, wherein the offset adjusting orifice plate device consists of a bottom plate, a guide groove and an adjustable orifice plate; wherein, the recess that the width is Dmm, length is 1.5D +50mm is seted up to the centre of bottom plate, guide way open-ended width also is Dmm, the top of guide way and the top parallel and level of bottom plate, and the guide way height is 2Dmm +100mm, is provided with the hole of taking the interior screw on the guide way to the three contact surface of guide way is connected with the device bottom plate through the welding, adjustable orifice plate inserts in the guide way, is provided with the round hole that the diameter is Dmm on the adjustable orifice plate. And lifting the pore plate in the guide groove by using a ring hook, enabling the lower bottom of a circular hole of the pore plate to be higher than the bottom of the diversion gallery by a preset offset h mm, and fixing and tightly attaching the pore plate to a device bottom plate by using a bolt by using a hole with an internal thread on the guide groove.
The distance between the round hole on the adjustable orifice plate and the upper edge of the orifice plate is 50mm, the distance between the round hole and the lower edge of the orifice plate is 0.5Dmm, and the distance between the round hole and the left edge and the distance between the round hole and the right edge of the orifice plate are 240 mm.
When the offset adjusting orifice plate device is installed, the bottom plate of the offset adjusting orifice plate device is positioned at the tail end of the diversion gallery and clings to the inner wall of the storage tank, the groove part of the offset adjusting orifice plate device is level with the bottom of the diversion gallery, two sides of the groove are aligned with two side walls of the diversion gallery, and the installation hole on the bottom plate is fixed on the wall of the storage tank by adopting expansion bolts.
The offset adjustable orifice plate devices are all made of stainless steel materials.
The adjustable orifice plate is provided with a ring hook which can lift the adjustable orifice plate to move up and down; the guide groove is provided with a hole with an inner screw, and the adjustable pore plate can be fixed on the bottom plate in an extruding mode through bolts.
The key part of the device is an adjustable orifice plate, the orifice plate is provided with a round hole with the diameter equal to the pipe diameter of a shunt pipe of the traditional shunt regulation pool, and the operation effect of the shunt regulation pool with the diameter of the shunt pipe being D and the offset being h can be equivalent to the operation effect of the shunt regulation pool with the diameter of the shunt pipe being D and the offset being h when the distance between the bottom of the hole and the bottom of a shunt gallery being h; the device's second characteristics lie in that the orifice plate vertical position is adjustable and be convenient for fixed, and simple operation can realize the offset and adjust. The technical problem that the offset of the traditional split-flow rainwater storage tank is nonadjustable can be solved on the basis of utilizing the device.
A method for adjusting the offset of a shunt tube of a shunt-type rainwater storage tank is realized by a series of facilities (as shown in figure 1), and the offset adjusting system of the shunt tube of the shunt-type rainwater storage tank comprises a rainwater pipe, a rainwater shunt well, a shunt corridor, an offset adjusting orifice plate device and a rainwater storage tank, wherein: the rainwater diversion well is respectively connected with the rainwater pipe and the diversion gallery, the diversion gallery is connected with the diversion well and the rainwater storage tank, and the diversion gallery and the rainwater storage tank are separated by the offset-adjustable pore plate device. The method is realized by the following steps:
(1) a rainwater diversion gallery is adopted to replace a diversion pipe, the pipe bottom of the diversion gallery is flush with the pipe bottom of a rainwater pipeline at the downstream of the well, and the width of the diversion gallery is equal to the pipe diameter of the rainwater pipe; the diversion cross section is moved backwards to the tail end of the diversion gallery from the rainwater diversion well by using the diversion gallery; an offset adjustable orifice plate device is arranged at the tail end of the diversion gallery (closely attached to the inner wall of the rainwater storage tank), and the device is arranged in the regulating tank and has a good operation space.
(2) The offset of the diversion pipe canal is realized by an offset adjustable orifice plate device arranged at the tail end of the diversion gallery; the orifice plate is adopted instead of the traditional shunt pipe with a certain buried depth, so that the orifice plate is convenient to vertically shift and adjust the offset; the diameter of the orifice plate is equal to that of the originally designed shunt pipe, so that the amount of rainwater shunted by the shunt orifice plate is equal to that of the originally designed shunt pipe; the distance h that the bottom of the vertically adjusted and positioned orifice plate is higher than the bottom of the diversion gallery is the offset of the diversion pipe (as shown in fig. 7).
(3) The height of the diversion corridor is 1.5 times of the diameter of the rainwater pipe, the fact that the rainwater pipeline system is likely to present press flow under the rainfall condition in a large recurrence period is mainly considered, the value of the height of the corridor is properly increased, and diversion rainwater quantity errors generated by tail end deviation and front end deviation (diversion wells) of the corridor can be eliminated.
(4) The highest design liquid level of the rainwater storage tank is not higher than the bottom elevation of the diversion gallery, so that outflow of the diversion pore plate is guaranteed to be free flow.
Among the above-mentioned four technical measure, first two steps are the most crucial, adopt rainwater reposition of redundant personnel corridor to replace the shunt tubes, realize shunting rainwater regulation pond skew section and move backward to at rainwater reposition of redundant personnel corridor terminal (regulation pond inner wall) installation offset adjustable orifice plate device, adjust the offset of shunt tubes jointly. Because the offset of the shunt tubes is adjustable, the volume of the shunt rainwater storage tank can be greatly reduced.
Compared with the prior art, the invention has the following obvious beneficial effects:
traditional shunting equalizing basin adopts the shunt tubes that have certain offset, shunts some rainwater to rainwater regulation pond from rainwater reposition of redundant personnel inspection shaft to reduce inspection shaft low reaches rainwater pipeline's peak flow. Because the burying depth of the shunt tubes is determined, the offset of the built shunt regulation pool is quantitative and cannot be regulated. The invention aims to provide an offset-adjustable orifice plate device for a flow dividing pipe of a flow dividing type rainwater storage tank, which consists of a bottom plate, a guide groove and an adjustable orifice plate, wherein the orifice plate can be vertically adjusted and positioned by simple operation; the invention also aims to provide a method for adjusting the offset of the diversion pipe of the diversion type rainwater storage tank. Because the offset is adjustable, when the volume of the rainwater storage tank is determined, the offset is adjusted to strengthen the peak clipping effect of the rainwater storage tank on downstream rainwater pipes aiming at rainstorms in different reappearance periods; if the rainwater storage tank volume is undetermined, the offset and the storage tank volume can be optimized aiming at the rainstorm in different reappearance periods, so that the minimum storage tank volume is obtained.
Drawings
FIG. 1 is a schematic view of an offset adjustment system for a diversion pipe of a diversion type rainwater storage tank according to the present invention;
FIG. 2 is a side cross-sectional view of an offset-adjusting orifice plate assembly in accordance with the present invention;
FIG. 3 is a schematic diagram of a bottom plate structure of an offset-adjusting orifice plate apparatus according to the present invention;
FIG. 4 is a schematic view of a guide groove structure of an offset-adjusting orifice plate apparatus according to the present invention;
FIG. 5 is a schematic structural diagram of an offset-adjusting orifice plate apparatus according to the present invention;
FIG. 6 is a schematic diagram of an orifice plate structure of an offset-adjusting orifice plate apparatus according to the present invention;
FIG. 7 is a schematic view of an adjustable orifice plate assembly according to the present invention;
fig. 8 is a schematic diagram of a pofel cell drainage system according to an embodiment of the present invention.
Wherein: 1-a rain pipe; 2, a rainwater diversion well; 3-a diversion corridor; 4-offset adjusting orifice plate device; 5, a rainwater storage tank; 6-a bottom plate; 7-a guide groove; 8-adjustable orifice plate; 9-round holes on the orifice plate; 10, adjusting a groove on a bottom plate of the orifice plate device by using offset; 11-inner wall of the rainwater storage tank; 12-mounting holes on the bottom plate of the offset adjusting orifice plate device; 13-holes with internal screw threads; 14-guide groove bottom plate; 15-P1 drainage mains; 16-P2 drainage mains; 17-P3 drainage mains; 18-P4 drainage mains; 19-rainwater trunk pipe.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1:
a device for adjusting the offset of a shunt pipe of a shunt type rainwater storage tank (as shown in figure 2), wherein the device 4 consists of a bottom plate 6, a guide groove 7 and an adjustable orifice plate 8; the adjustable orifice plate 8 is inserted into the guide groove 7, the orifice plate in the guide groove is lifted by a ring hook, the bottom of the orifice plate round hole is higher than the bottom of the diversion gallery, the distance is preset offset h mm, the orifice 13 with an internal thread on the guide groove is utilized, and the orifice plate is fixedly attached to the bottom plate of the device by a bolt.
Be provided with the round hole that the diameter is D on the adjustable orifice plate 8, the distance of round hole and orifice plate upper edge is 50mm, and the distance of round hole and orifice plate lower limb is 0.5Dmm, and the distance on two edges is 240mm about round hole and the orifice plate.
The offset adjustable orifice plate devices 4 are all made of stainless steel materials.
The device is an indispensable important facility in the implementation scheme of the offset adjusting method of the shunt pipe of the shunt type rainwater storage tank.
According to the simulation result of the SWMM for the rainwater drainage system containing the divided-flow regulation and storage pool, firstly, the pipe diameter D of a rainwater dividing pipe (which is equal to the pipe diameter of a rainwater dividing down-hole rainwater pipeline) is determined, and the design of a dividing corridor and the design, manufacture and installation of an offset adjustable orifice plate are carried out according to D; analyzing the simulation result to obtain the shunt pipe offset required by the reduction of the runoff peak value in rainstorm time when P is 1a, 2a, 5a, 10a and 20 a; the offset for general rainstorm can be set to be one value, the offset for extra-large rainstorm is set to be another value, and the offset is adjusted before the extra-large rainstorm according to weather forecast, so that the runoff peak clipping effect for different rainstorms can be achieved by adopting the minimum rainwater storage tank.
Example 2:
the utility model provides a shunting rainwater regulation pond shunt tubes offset control method, this method realizes through a series of facilities (as shown in figure 1), including downspout 1, rainwater reposition of redundant personnel well 2, reposition of redundant personnel corridor 3, adjustable orifice plate device of offset 4 and rainwater regulation pond 5, its characterized in that: the rainwater diversion well 2 is respectively connected with the rainwater pipe 1 and the diversion gallery 3, the diversion gallery 3 is respectively connected with the diversion well 2 and the rainwater storage tank 5, and the diversion gallery 3 and the rainwater storage tank 5 are separated by the offset adjustable orifice plate device 4; the rainwater main pipe 1 is provided with a rainwater diversion well 2, a diversion gallery 3 is adopted to connect the rainwater diversion well 2 and a rainwater storage tank 5, the bottom of the diversion gallery 3 is level with the bottom of the rainwater diversion well 2 and the bottom of the rainwater pipeline of the underground trip, and an offset adjustable orifice plate device 4 is arranged at the tail end of the diversion gallery 3 and clings to the inner wall 11 of the rainwater storage tank (shown in figure 7). The method comprises the following steps:
obtaining offset of shunting type regulation and storage pool for dealing with rainstorm in different reappearance periods by SWMM simulation
Taking the baoliraf cell in wuhan city as an example, the drainage system of the cell is shown in fig. 8. And establishing an SWMM generalized model for a drainage system of the residential area and the adopted LID combination measures by adopting SWMM model software, and respectively evaluating rainfall runoff peak values of the drainage system before development, the drainage system after development and the adopted LID combination measures. The LID combination measures are as follows: the standard of setting the diversion type storage pond is 200m3/10000m2 hardened area, 30% of green area adopts concave green area, 70% of sidewalk and parking lot area adopts infiltration pavement, and 50% of roof area adopts green roof. The results of the P1 rain drain simulation are shown in table 1.
Table 1P1 with different offsets to shunt peak flow of storage tank
The pipe diameter of the shunt pipe of the P1 discharge port split flow type adjusting pool is 600mm, and a shunt gallery and an offset adjustable orifice plate can be designed according to the result. As can be seen from the simulation results in table 1, the optimum offset of the split-flow type adjustment tank for rainfall with P ═ 1a, 2a, 5a, 10a, and 20a is 0, 0.05, 0.1, and 0.15m, respectively. In actual engineering, the adjustment times of the offset is not too frequent. Taking the principle that the peak value of runoff after development does not exceed the peak value before development, when P is 1a, 2a and 5a, the offset of the shunt pipe is 0.0 m; when P is 10a and 20a, the shunt offset is taken to be 0.15 m. In the actual operation process, when weather forecast indicates general rainstorm, the offset is 0; when the weather forecast has extra heavy rainstorm, the offset is adjusted to 0.15m before the rain, and a good runoff peak clipping effect can be obtained in different intensities of rains.
B. The rainwater diversion gallery is adopted to replace a diversion pipe, the pipe bottom of the diversion gallery is level with the pipe bottom of a rainwater pipeline and does not deviate upwards, and the width of the diversion gallery is 600mm which is equal to the pipe diameter of the rainwater pipe;
C. the diversion of the diversion pipe canal is realized by an offset-adjustable orifice plate component arranged at the tail end of the diversion gallery (as shown in figures 1 and 7), the diversion gallery height is 1.5 times of the diameter of the rainwater pipe, namely 900mm, the problem that the rainwater pipeline system is possible to present press flow under the rainfall condition of a large recurrence period is mainly considered, the value of the gallery height is properly increased, and the diversion rainwater quantity error generated by the tail end diversion and the front end diversion of the gallery can be eliminated.
D. Device for designing and manufacturing offset-adjustable orifice plate
Referring to fig. 3, 4 and 6, taking D as 600mm, and processing the bottom plate, the guide groove and the pore plate; the top of the guide groove is flat with the top of the bottom plate of the device, the opening with the width of 600mm of the guide groove corresponds to the groove with the width of 600mm of the bottom plate, and the guide groove is connected with the three contact surfaces of the bottom plate in a welding manner. The orifice plate is inserted into the guide groove (with the orifice portion on top) (as shown in fig. 5).
E. The bottom of the groove of the bottom plate of the offset-adjustable orifice plate assembly is leveled with the bottom of the rectangular hole of the diversion gallery on the adjusting pool, the two sides of the groove are aligned with the left side and the right side of the hole of the diversion gallery, and the bottom plate is fixed on site by expansion bolts by utilizing fixing holes (see fig. 3 and 5) on the bottom plate.
F. Shunt tube offset adjustment
When the weather forecast has larger heavy rain, the offset of the flow pipe is 0.0m when P is less than or equal to 5a generally, the hole plate in the guide groove is lifted by the loop hook, the distance between the bottom of the circular hole of the hole plate and the bottom of the flow dividing gallery is 0.0mm (refer to a ruler welded on the guide groove), the hole with the inner thread on the guide groove (see figures 4 and 5) is utilized, and the hole plate is fixedly attached to the assembly bottom plate by the bolt. Because the diameter of the hole is 600mm, the rainwater is distributed from the rainwater pipeline system to the regulating reservoir by the flow dividing pipe with the diameter of 600mm, and the peak clipping effect of the preset offset of the flow dividing regulating reservoir is achieved.
When the weather forecasts that the weather is extremely heavy, the offset of the flow dividing pipe is 0.15m when P is larger than 5a generally, the hole plate in the guide groove is lifted by the ring hook, the distance between the circular hole bottom of the hole plate and the bottom of the flow dividing gallery is 0.15mm, the hole plate is fixedly attached to the assembly bottom plate by the bolts, the adjusted hole plate is equivalent to the flow dividing pipe with the diameter of 600mm, rainwater is divided from the rainwater pipeline system to the adjusting pond, and the expected peak clipping effect of the preset offset of the flow dividing type adjusting pond is achieved.
Finally, it is to be noted that: the above examples do not limit the invention in any way. It will be apparent to those skilled in the art that various modifications and improvements can be made to the present invention. Accordingly, any modification or improvement made without departing from the spirit of the present invention is within the scope of the claimed invention.
Claims (6)
1. The offset adjusting device for the flow dividing pipes of the flow dividing type rainwater storage tank is characterized by comprising an offset adjusting pore plate device (4), wherein the offset adjusting pore plate device (4) consists of a bottom plate (6), a guide groove (7) and an adjustable pore plate (8); the adjustable hole plate is characterized in that a groove with the width of Dmm and the length of 1.5D +50mm is formed in the middle of the bottom plate (6), the opening width of the guide groove (7) is also Dmm, the top of the guide groove (7) is flush with the top of the bottom plate (6), the height of the guide groove (7) is 2Dmm +100mm, a hole (13) with an inner screw is formed in the guide groove, three contact surfaces of the guide groove are connected with the device bottom plate (6) through welding, the adjustable hole plate (8) is inserted into the guide groove (7), and a round hole with the diameter of Dmm is formed in the adjustable hole plate (8);
wherein the adjustable orifice plate (8) can be moved up and down by using a ring hook; the guide groove (7) is provided with a hole (13) with an inner screw, and the adjustable pore plate (8) can be extruded and fixed on the bottom plate (6) by utilizing a bolt.
2. The adjusting device according to claim 1, characterized in that the distance between the circular hole in the adjustable orifice plate (8) and the upper edge of the orifice plate is 50mm, the distance between the circular hole and the lower edge of the orifice plate is 0.5Dmm, and the distance between the circular hole and both the left and right edges of the orifice plate is 240 mm.
3. The adjusting apparatus according to claim 2, characterized in that the offset adjusting orifice means (4) are made of stainless steel material.
4. A method for adjusting the offset of the shunt tubes of the split-flow rainwater storage pool by using the adjusting device of any one of claims 1 to 3, wherein the split-flow rainwater storage pool shunt tube offset adjusting system comprises a rainwater pipe (1), a rainwater split well (2), a split corridor (3), an offset adjusting orifice device (4) and a rainwater storage pool (5); one inspection well in the diversion pipe offset adjusting system of the diversion type rainwater storage tank is set as a rainwater diversion well, a diversion gallery is used for connecting the rainwater diversion well and the rainwater storage tank, the bottom of the diversion gallery is level with the bottom of the rainwater diversion well and the bottom of a rainwater pipeline of the underground trip, and an offset adjusting orifice plate device is arranged at the tail end of the diversion gallery close to one side of the rainwater storage tank to realize offset adjustment;
the rainwater diversion gallery is adopted to replace the diversion pipes, the bottom of the diversion gallery is flush with the pipe bottom of a rainwater pipeline at the downstream of the rainwater diversion well, the width of the diversion gallery is equal to the pipe diameter of the rainwater pipe and is Dmm, and the height-to-width ratio of the diversion gallery is 1.5; and an offset adjusting orifice plate device is arranged at the tail end of the diversion gallery.
5. The method for adjusting the offset of the shunt tubes of the shunt-type rainwater storage tank according to claim 4, wherein the offset of the shunt tube channels is realized by an offset adjusting orifice plate device arranged at the tail end of the shunt gallery; the diameter of the orifice plate is equal to that of the originally designed shunt pipe; the distance hmm that the bottom of the round hole after vertical adjustment and positioning is higher than the bottom of the shunting gallery is the offset of the shunting pipe.
6. The method for adjusting the offset of the diversion pipes of the diversion-type rainwater storage tank according to claim 5, wherein the maximum design liquid level of the rainwater storage tank is equal to the bottom of the diversion corridor.
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| US11028569B2 (en) | 2018-10-30 | 2021-06-08 | Advanced Drainage Systems, Inc. | Systems, apparatus, and methods for maintenance of stormwater management systems |
| US20200263409A1 (en) * | 2018-10-30 | 2020-08-20 | Advanced Drainage Systems, Inc. | Systems, apparatus, and methods useful for enhanced maintenance of stormwater management systems |
| US11028570B2 (en) | 2018-10-30 | 2021-06-08 | Advanced Drainage Systems, Inc. | Systems, apparatus, and methods for maintenance of stormwater management systems |
| CN109826306A (en) * | 2018-12-27 | 2019-05-31 | 镇江市高等专科学校 | Adaptive rain sewage diversion valve gear |
| CN110210091B (en) * | 2019-05-22 | 2022-11-11 | 上海市政工程设计研究总院（集团）有限公司 | Method for equalizing convergence width parameters of water drainage model SWMM |
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| CN2449264Y (en) * | 2000-11-07 | 2001-09-19 | 吴小玲 | Spiral type liquid level regulator |
| CN201197317Y (en) * | 2008-05-20 | 2009-02-25 | 广东博宇水族实业有限公司 | Mechanism for regulating overflow mouth applied for fluid level control device of aquarium |
| CN103103967B (en) * | 2013-02-27 | 2015-02-18 | 顾积志 | Irrigation and draining brake |
| CN204660502U (en) * | 2015-05-25 | 2015-09-23 | 柯林伯尔（天津）机械科技有限公司 | Non-pressure vessel liquid level adjusting device |
| CN204773515U (en) * | 2015-07-09 | 2015-11-18 | 江苏鸿云翔橡塑机械有限公司 | Cooling trough water level regulating overflow arrangement |
| JP6574657B2 (en) * | 2015-09-17 | 2019-09-11 | 積水化学工業株式会社 | Rainwater drainage storage equipment |
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