CN215802133U - Prevent falling siphon system that inspection shaft overflowed - Google Patents
Prevent falling siphon system that inspection shaft overflowed Download PDFInfo
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- CN215802133U CN215802133U CN202120487737.6U CN202120487737U CN215802133U CN 215802133 U CN215802133 U CN 215802133U CN 202120487737 U CN202120487737 U CN 202120487737U CN 215802133 U CN215802133 U CN 215802133U
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- inspection well
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Abstract
The utility model provides an inverted siphon system for preventing overflow of an inspection well, which is characterized by comprising a water inlet unit, an inverted siphon unit and a water outlet unit which are sequentially communicated, wherein the inverted siphon unit comprises at least two inverted siphons which are arranged at intervals in the vertical direction; the water inlet unit comprises a water inlet pipe and a water inlet inspection well, and the water inlet pipe and the water inlet inspection well are communicated in sequence; the water outlet unit comprises a water outlet inspection well and a water outlet pipe, the water outlet inspection well is communicated with the water outlet pipe in sequence, wherein the pipe bottom elevation of the water inlet pipe is greater than the pipe bottom elevation of the water outlet pipe. The inverted siphon system of the utility model arranges at least two inverted siphons below the barrier in parallel in the vertical direction, and can effectively relieve the problems of overflow of the inspection well and the like caused by untimely drainage of the inverted siphons under the condition of heavy rain.
Description
Technical Field
The utility model relates to the technical field of municipal drainage, in particular to an inverted siphon system for preventing overflow of an inspection well.
Background
The water environment health is the most basic guarantee for the happy life of people. In recent years, the urbanization construction scale of China is continuously enlarged, the laying work of an underground sewage pipe network is more important, and the inverted siphon is used as a key node for municipal drainage pipes to pass through obstacles such as river courses, mountain stream, swales and the like to control the drainage capacity of the whole pipe network system.
The construction of underground pipe networks is usually developed along with the development of urbanization construction, because of the limitation of technology and cost, the construction of pipe networks in early stage of China mostly takes confluence as the main part, and partial shunt pipe networks have the phenomenon that rain and sewage are not shunted thoroughly or even have no rain and sewage shunt because of reasons such as unreasonable landform or design and the like. Under non-rainfall weather conditions, the pipe network system can generally convey the collected domestic sewage to a sewage plant for treatment and discharge; however, in plum rain seasons, especially in heavy rain periods, surface runoff formed by a large amount of rainfall flows into a sewage pipe network system along mountain ditches, roadside ditches or rainwater and sewage pipelines with incomplete rainwater and sewage diversion, so that the water quantity of a sewage main pipe is increased rapidly, and the phenomenon of sewage overflow often occurs at inspection wells with unsmooth drainage of downpipes. The phenomenon is often found in southeast coastal areas with abundant rainwater resources in China, particularly in hilly areas with obvious terrain relief, and needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides an inverted siphon system for preventing overflow of inspection well, so as to solve the related problems in the background art.
Based on the above purpose, the utility model provides an inverted siphon system for preventing overflow of an inspection well, which comprises a water inlet unit, an inverted siphon unit and a water outlet unit which are sequentially communicated, wherein the inverted siphon unit comprises at least two inverted siphon pipes which are arranged at intervals in the vertical direction;
the water inlet unit comprises a water inlet pipe and a water inlet inspection well, and the water inlet pipe and the water inlet inspection well are communicated in sequence; the water outlet unit comprises a water outlet inspection well and a water outlet pipe, the water outlet inspection well is communicated with the water outlet pipe in sequence, wherein the pipe bottom elevation of the water inlet pipe is greater than the pipe bottom elevation of the water outlet pipe.
Further, the distance between two inverted siphon pipes which are adjacently arranged up and down is larger than 0.4 m.
Further, the inverted siphon comprises a descending pipe section, a horizontal pipe section and an ascending pipe section which are sequentially communicated, the descending pipe section is communicated with the water inlet unit, and the ascending pipe section is communicated with the water outlet unit.
Further, the horizontal pipe section of the inverted siphon positioned at the uppermost part is not less than 0.5m from the bottom of the riverbed.
Furthermore, the intersection angle of the ascending pipe section and the horizontal pipe section and the intersection angle of the descending pipe section and the horizontal pipe section are not more than 30 degrees.
Furthermore, the water inlet unit also comprises a mud trap, the water inlet pipe, the mud trap and the water inlet inspection well are communicated in sequence, and the mud trap is communicated with the water inlet inspection well through a transition port.
Furthermore, a screen is arranged at the transition port.
Further, the screen is a stainless steel screen.
Further, the aperture of the screen is not larger than 1/4 of the diameter of the inverted siphon.
Further, an accident discharge pipe is arranged at the lower part of the mud sinking well.
From the above, the inverted siphon system for preventing the overflow of the inspection well, provided by the utility model, has the advantages that at least two inverted siphon pipes are laid below the barrier in parallel in the vertical direction, so that the problems of overflow of the inspection well and the like caused by untimely drainage of the inverted siphon pipes under the condition of heavy rain can be effectively solved; in addition, the inverted siphon system can automatically adjust the overflowing flow in the pipeline in real time according to the water coming from an upstream pipe network and the liquid level change of the inspection well, does not need to arrange a gate valve or other opening and closing devices at the inspection well or the pipeline port, and has the characteristics of simple structure, less manual investment, strong applicability and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of the operation of an inverted siphon system under non-rainfall and weak rainfall conditions in accordance with an embodiment of the present invention;
FIG. 2 is a front view of the operation of the inverted siphon system under heavy rainfall and heavy rain conditions in accordance with an embodiment of the present invention;
FIG. 3 is a top view of an inverted siphon system in an embodiment of the present invention;
FIG. 4 is a side view of a mud pit in an embodiment of the present invention;
FIG. 5 is a side view of a water entry manhole and a water exit manhole according to an embodiment of the present invention.
In the figure, 1, a water inlet pipe; 2. a mud sinking well; 3. a water inlet inspection well; 4. an upper inverted siphon; 41. an ascending pipe section; 42. a horizontal pipe section; 43. a down-going pipe section; 5. a lower inverted siphon; 6. a water outlet inspection well; 7. a water outlet pipe; 8. screening a screen; 9. an accident discharge pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It is to be noted that technical terms or scientific terms used in the embodiments of the present invention should have the ordinary meanings as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
As described in the background, "sewage overflow often occurs at an inspection well with unsmooth drainage of the inverted siphon", the applicant finds in the process of implementing the present disclosure that, in the existing design and construction method for the inverted siphon, two inverted siphon pipes are usually laid in parallel below an obstacle, and one inverted siphon is used as a spare pipe during maintenance of the other inverted siphon, and although this method can ensure drainage smoothness of the whole pipe network system during maintenance of the inverted siphon, a valve is often required to be arranged in the inspection well to control opening and closing of the inverted siphon, and the problem of overflow of the inverted siphon inspection well caused by heavy rain cannot be solved fundamentally.
The disclosure provides a reasonable solution, and the siphon system can ensure the flow speed under the non-rainfall condition and can quickly improve the discharge quantity of the siphon under the heavy rainfall condition on the basis of reducing manual operation and maintenance.
The technical solution of the present invention is described below by way of examples with reference to the accompanying drawings.
The present disclosure provides an inverted siphon system for preventing overflow of an inspection well, as shown in fig. 1-5, the inverted siphon system for preventing overflow of the inspection well comprises a water inlet unit, an inverted siphon unit and a water outlet unit which are sequentially communicated, wherein the inverted siphon unit comprises at least two inverted siphon pipes which are arranged at intervals in the vertical direction;
the water inlet unit comprises a water inlet pipe and a water inlet inspection well, and the water inlet pipe and the water inlet inspection well are communicated in sequence; the water outlet unit comprises a water outlet inspection well and a water outlet pipe, the water outlet inspection well is communicated with the water outlet pipe in sequence, wherein the pipe bottom elevation of the water inlet pipe is greater than the pipe bottom elevation of the water outlet pipe, and the height difference between the two elevations meets the water head loss of the system.
Specifically, the elevation of the bottom of the water inlet pipe is not lower than the elevation of the bottom of the water inlet of the inverted siphon positioned at the top; the elevation of the bottom of the water outlet pipe is not lower than the elevation of the bottom of the inverted siphon water outlet positioned at the lowest position.
Specifically, 2, 3, 4 and 5 inverted siphons can be arranged in the inverted siphon unit.
In this embodiment, a plurality of fall siphon in the fall siphon unit sets up for vertical interval, and the inlet tube is not less than the fall siphon that is located the top, and the outlet pipe is not less than the fall siphon that is located the bottom, and relevant difference in height should offset the head loss of entire system at least to guarantee the normal blowdown of entire system.
The siphon system of falling of this embodiment can come water and check well liquid level according to the upstream pipe network and change the flow that overflows in adjusting the pipeline in real time independently, the water level of the unit of intaking reaches the siphon that falls highly then can directly follow this siphon and the siphon that falls of below carries out the blowdown, the unit of intaking, it controls opening and close of siphon to need not to set up the valve again between the unit of going out water and the siphon unit, and has simple structure, artifical input is few, characteristics such as suitability is strong, the blowdown is smooth and easy, with the overflow problem of solving the inspection shaft of intaking and/or the inspection shaft of going out water that arouses because of the torrential rain.
In some embodiments, the distance between two adjacent inverted siphons laid in the vertical direction is preferably greater than 0.4m, the distance is set mainly in consideration of how much and little the inverted siphons through which water flows are deformed in use, and the distance can be set to avoid the inverted siphons below from being deformed and even damaged due to the compression of the inverted siphons above.
In some embodiments, as shown in fig. 1, the inverted siphon includes a descending pipe section, a horizontal pipe section and an ascending pipe section which are sequentially communicated, wherein the descending pipe section is communicated with the water inlet unit, the ascending pipe section is communicated with the water outlet unit, and the horizontal pipe section of the inverted siphon positioned at the uppermost position is not less than 0.5m from the bottom of the river bed so as to prevent the river channel from being flushed and the inverted siphon structure from being damaged.
And the intersection angle of the ascending pipe section and the horizontal pipe section and the intersection angle of the descending pipe section and the horizontal pipe section are not more than 30 degrees. The larger the angle of intersection, the larger the head loss of the system, and the limit of not more than 30 ° is mainly set to reduce the head loss of the system as much as possible on the premise of satisfying the normal operation of the inverted siphon.
In some embodiments, as shown in fig. 1 and 4, the water inlet unit further comprises a mud trap, the water inlet pipe, the mud trap and the water inlet inspection well are sequentially communicated, the mud trap is communicated with the water inlet inspection well through a transition port, specifically, the elevation of the bottom of the transition port is not lower than the elevation of the bottom of the uppermost inverted siphon, and the elevation of the bottom of the water inlet pipe is not lower than the elevation of the bottom of the transition port.
Wherein, the mud trap has the functions of settling silt, intercepting branches, stones, garbage and the like. The lower part of the mud trap is provided with an accident discharge pipe which can be used under the conditions of inverted siphon clogging, pipeline damage and the like which need to be overhauled.
As shown in figure 5, the water inlet inspection well is communicated with a descending pipe section of the inverted siphon, and provides an operation space for examining and repairing maintenance personnel whether the water inlet of the inverted siphon is normal or not.
Further, transition mouth department is equipped with the screen cloth, specifically can be the stainless steel screen cloth, and this screen cloth can avoid blockking up the siphon of falling with interception such as branch, stone, rubbish in the heavy mud well, and the screen cloth aperture should be not more than 1/4 of the siphon pipe diameter to avoid having debris to get into and block up the pipeline, if the siphon pipe diameter of falling is DN200, then the screen cloth aperture is not more than 50 mm.
In some embodiments, the water outlet inspection well of the water outlet unit is communicated with the ascending pipe section of the inverted siphon, and the water outlet inspection well provides an operation space for the overhaul and maintenance personnel to inspect whether the water outlet of the inverted siphon is normal.
In some embodiments, the disclosure provides an anti-overflow method for an inverted siphon system (taking an inverted siphon unit with 2 inverted siphons arranged up and down as an example, and for convenience of description, the 2 inverted siphons are an upper inverted siphon and a lower inverted siphon, respectively), specifically:
s1: non-rainfall period and weak rainfall period: as shown in fig. 1, sewage flows into a mud pit through a municipal sewage inlet pipe, when the liquid level of the mud pit reaches the height of a screen, the sewage overflows into a water inlet inspection well from the mud pit, sundries such as branches, stones, garbage and the like are retained in the mud pit for periodic cleaning, the sewage flowing into the water inlet inspection well flows into a water outlet inspection well through a lower siphon pipe under the action of pressure difference, and then is conveyed to a downstream pipe network system through a municipal sewage outlet pipe, and an upper siphon pipe is in an idle and standby state at the stage;
s2: strong rainfall period and rainstorm period: as shown in figure 2, the water yield is increased suddenly, municipal sewage pipes are in a full pipe flow state or an approximately full pipe flow state, the water passing capacity of a lower inverted siphon cannot meet the impact of the upstream incoming water yield of a pipe network, when the liquid level of a water inlet inspection well rises to the pipe bottom elevation of the upper inverted siphon, the upper inverted siphon starts to work, the two inverted siphons of the upper inverted siphon and the lower inverted siphon work together to convey the upstream incoming water of the pipe network to a downstream pipe network system as soon as possible, and overflow of the water inlet inspection well caused by insufficient overflow flow of a single inverted siphon is avoided.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the utility model, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity.
The embodiments of the utility model are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. The inverted siphon system for preventing the overflow of the inspection well is characterized by comprising a water inlet unit, an inverted siphon unit and a water outlet unit which are sequentially communicated, wherein the inverted siphon unit comprises at least two inverted siphon pipes which are arranged at intervals in the vertical direction;
the water inlet unit comprises a water inlet pipe and a water inlet inspection well, and the water inlet pipe and the water inlet inspection well are communicated in sequence; the water outlet unit comprises a water outlet inspection well and a water outlet pipe, the water outlet inspection well is communicated with the water outlet pipe in sequence, wherein the pipe bottom elevation of the water inlet pipe is greater than the pipe bottom elevation of the water outlet pipe.
2. The inverted siphon system for preventing the overflow of the inspection well, according to claim 1, wherein the distance between two inverted siphons adjacently arranged up and down is larger than 0.4 m.
3. The inverted siphon system for preventing overflow of inspection well, according to claim 1 or 2, characterized in that the inverted siphon comprises a descending pipe section, a horizontal pipe section and an ascending pipe section which are communicated in sequence, the descending pipe section is communicated with the water inlet unit, and the ascending pipe section is communicated with the water outlet unit.
4. The system of claim 3, wherein the horizontal pipe section of the inverted siphon at the top is not less than 0.5m from the bottom of the river bed.
5. The inverted siphon system for preventing overflow of inspection well, wherein the intersection angle of ascending pipe section and horizontal pipe section and the intersection angle of descending pipe section and horizontal pipe section are not more than 30 °.
6. The inverted siphon system for preventing the overflow of the inspection well, according to claim 1 or 2, characterized in that the water inlet unit further comprises a mud trap, and the water inlet pipe, the mud trap and the water inlet inspection well are communicated in sequence.
7. The inverted siphon system for preventing the manhole from overflowing, according to claim 6, wherein the mud caisson is communicated with the water inlet manhole through a transition port, and a screen is arranged at the transition port.
8. The inverted siphon system for preventing overflow of inspection well, according to claim 7, characterized in that the screen is stainless steel screen.
9. The inverted siphon system for preventing the overflow of the inspection well, according to claim 7, wherein the aperture of the screen is not larger than 1/4 of the diameter of the inverted siphon.
10. The inverted siphon system for preventing the overflow of inspection well, according to claim 6, wherein the lower part of said mud pit is provided with an accident discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120487737.6U CN215802133U (en) | 2021-03-05 | 2021-03-05 | Prevent falling siphon system that inspection shaft overflowed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120487737.6U CN215802133U (en) | 2021-03-05 | 2021-03-05 | Prevent falling siphon system that inspection shaft overflowed |
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| Publication Number | Publication Date |
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| CN215802133U true CN215802133U (en) | 2022-02-11 |
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| CN202120487737.6U Active CN215802133U (en) | 2021-03-05 | 2021-03-05 | Prevent falling siphon system that inspection shaft overflowed |
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- 2021-03-05 CN CN202120487737.6U patent/CN215802133U/en active Active
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