Gravity flow sewer under grade road inlet system

Abstract

The application discloses a gravity flow sewage pipe into corridor system under flat slope road and relates to the technical field of urban underground comprehensive pipe gallery engineering, which can effectively solve the problems of sewage branch pipe and neighborhood branch pipe access, sewage pipe ventilation and flushing, and simultaneously reduce the buried depth of the sewage pipe gallery. The gravity flow sewage pipe into corridor system under flat slope road comprises a pipe gallery main body. A sewage chamber is arranged in the pipe gallery main body. A sewage main pipe is arranged in the sewage chamber. The sewage main pipe is arranged along the length direction of the sewage chamber. A plurality of pipeline branch piers are arranged below the sewage main pipe. The bottom surface of the sewage chamber is in a wavy shape with ups and downs. The sewage main pipe is up and down along with the sewage chamber. The system further comprises a sewage connecting well which is used for connecting sewage branch pipes with different buried depths. The system further comprises a flushing system which is used for flushing the pipelines of the sewage connecting well and part of the sewage main pipe. Through the wavy sewage chamber and the sewage main pipe with ups and downs, the buried depth required by the sewage main pipe is greatly reduced, and the cost of the comprehensive pipe gallery is reduced.

Description

Technical Field

[0001] This invention relates to the field of urban underground integrated pipe gallery engineering technology, and in particular to a gravity flow sewage pipe entry system under a flat road. Background Technology

[0002] As an important carrier of urban pipelines, integrated utility tunnels reduce the direct burial of municipal pipelines and effectively solve a series of problems such as repeated road excavation and dense overhead pipelines. Currently, integrated utility tunnels mainly include pipelines for water supply, electricity, communications, heating, and reclaimed water, while how to include sewage pipelines that rely on gravity discharge into integrated utility tunnels has always been a hot topic of discussion.

[0003] There are currently many problems with gravity-flow sewage pipes entering the corridor:

[0004] First, in cities with flat terrain and gentle road slopes, the burial depth of the utility tunnel will increase when sewage pipes are placed in the tunnel, thus increasing the cost of the utility tunnel.

[0005] Secondly, the existing method involves installing reinforced concrete inspection wells inside the corridor to connect to sewage branch pipes, and setting gate wells at certain intervals to cut off the main sewage pipe. The location of the inspection wells requires a larger width of the pipe corridor, which increases the space and cost of the pipe corridor.

[0006] Finally, the sewage pipes contain a large amount of floating matter and silt, and at the same time, toxic and harmful gases such as hydrogen sulfide, methane, and carbon monoxide are produced in the anaerobic environment. After the sewage pipes enter the corridor, the spacing between inspection wells becomes larger and the operating space inside the corridor is limited, which is not conducive to the dredging and ventilation of the sewage pipes inside the corridor. Summary of the Invention

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a gravity flow sewage pipe inlet system under sloping roads, which can effectively solve the problems of sewage branch pipe and neighborhood branch pipe access, sewage pipe ventilation and flushing, and at the same time reduce the burial depth of sewage pipe corridors.

[0008] According to an embodiment of the present invention, a gravity flow sewage pipe inlet system under a sloping road includes a pipe gallery main body, a sewage tank is provided inside the pipe gallery main body, a main sewage pipe is arranged in the sewage tank, the main sewage pipe is arranged along the length direction of the sewage tank, a plurality of pipe supports are arranged below the main sewage pipe, the bottom surface of the sewage tank is wavy and undulating, the main sewage pipe undulates with the sewage tank, and the pipe supports cooperate with the sewage tank to achieve the wavy arrangement of the main sewage pipe; a sewage connection well, the sewage connection well is connected to the main sewage pipe, the sewage connection well is used to connect sewage branch pipes at different burial depths; and a flushing system, the flushing system is connected to the sewage connection well, the flushing system is used to flush the pipes of the sewage connection well and part of the main sewage pipe.

[0009] The system offers at least the following advantages: A gravity-flow sewage pipe corridor system under a sloping road includes: a main corridor body; a sewage tank within the main corridor body; a main sewage pipe located within the sewage tank; the main sewage pipe extending along the length of the sewage tank; several pipe supports below the main sewage pipe; a wavy, undulating bottom surface of the sewage tank; and the undulating sewage pipe following the contours of the sewage tank. The pipe supports, in conjunction with the sewage tank, achieve the wavy arrangement of the main sewage pipe. It also includes a sewage connection well. The sewage connection well connects to the main sewage pipe and is used to connect sewage branch pipes at different burial depths. Furthermore, it includes a flushing system. The flushing system connects to the sewage connection well and is used to flush the pipes in the sewage connection well and part of the main sewage pipe. The wavy, undulating sewage tank and main sewage pipe significantly reduce the required burial depth of the main sewage pipe, lowering the cost of the integrated pipe corridor. Simultaneously, the connection of sewage branch pipes via the sewage connection well eliminates the need for a large corridor width, saving costs. The flushing system performs segmented flushing of the main sewage pipe, preventing pipe contamination.

[0010] According to some embodiments of the present invention, the main sewage pipe is provided with a plurality of overhead inspection wells, the overhead inspection wells being spaced 60 to 70 meters apart, and the overhead inspection wells being used to connect to the block branch pipes located above the pipe gallery.

[0011] According to some embodiments of the present invention, the extended manhole includes: a steel pipe adapter, a manhole body, a manhole cover, a maintenance ladder, and a brick-lined flow channel. The manhole body is connected to the main sewage pipe through the steel pipe adapter. The manhole cover is located at the upper end of the manhole body. The maintenance ladder is located on the side wall of the manhole body. The brick-lined flow channel is located below the manhole body. The block branch pipe is connected to the manhole body.

[0012] According to some embodiments of the present invention, the main sewage pipes of two adjacent extended inspection wells are provided with inspection ports, the inspection ports including inspection tees and inspection blind plugs.

[0013] According to some embodiments of the present invention, the main sewage pipe is provided with a plurality of vent pipes, the plurality of vent pipes being spaced 200 meters apart, the vent pipes passing through the concrete supports above the main body of the pipe gallery and extending upward, the vent pipes being provided with vent caps at their ends, and the bottom of the vent caps being more than 0.6 meters from the ground.

[0014] According to some embodiments of the present invention, the sewage connection well includes a connection well body, a sedimentation tank, a connection well cover, a connection well ladder, and a sewage connection pipe. The sewage branch pipe is connected to the connection well body. The sedimentation tank is disposed at the bottom of the connection well body. The connection well cover is disposed at the upper end of the connection well body. The connection well ladder is disposed on the side wall of the connection well body. The sewage connection pipe connects the connection well body and the main sewage pipe.

[0015] According to some embodiments of the present invention, the flushing system includes a flushing well, a flushing water pipe, a flushing valve, and a flushing well cover. The sewage connection pipe passes through the flushing well, the flushing water pipe is disposed in the flushing well and communicates with the sewage connection pipe, and the flushing valve is disposed on the sewage connection pipe. The flushing valve can prevent flushing water from entering the connection well body.

[0016] According to some embodiments of the present invention, two sewage connection wells are grouped together, and the two sewage connection wells are respectively arranged on both sides of the main body of the pipe gallery. The two sewage connection wells are connected through a connecting channel, and one of the two sewage connection wells is connected to the sewage connection pipe.

[0017] According to some embodiments of the present invention, the connecting channel is inclined with a slope of 0.5%.

[0018] According to some embodiments of the present invention, a plurality of wastewater gate valves are also included, wherein the plurality of wastewater gate valves are disposed on the main wastewater pipe and the wastewater gate valves are located downstream of the wastewater connection pipe.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0021] Figure 1 This is a schematic diagram of the sewage pipe inlet corridor system of the present invention;

[0022] Figure 2 This is a schematic diagram of the longitudinal section of the main body of the pipe gallery of the present invention, which is arranged in a wave-like pattern.

[0023] Figure 3 This is a schematic diagram of the structure of the extended inspection well of the present invention;

[0024] Figure 4 This is a schematic diagram of the flushing well and sewage connection well of the present invention;

[0025] Figure 5 This is a schematic diagram of the flushing system of the present invention;

[0026] Figure 6 This is a schematic diagram of the double-sided sewage branch pipe connection of the present invention;

[0027] Figure 7 This is a schematic diagram of the inspection port and ventilation port structure of the present invention.

[0028] Icon labels:

[0029] The main structure of the utility tunnel is 10, the ventilation pipe is 11, the concrete support is 12, and the ventilation cap is 13.

[0030] Sewage tank 20;

[0031] 30. Sewage main pipe; 31. Pipe support; 32. Sewage gate valve;

[0032] 40. Sewage connection well, 41. Sewage branch pipe, 42. Connection well body, 43. Sedimentation trough, 44. Connection well cover, 45. Connection well ladder, 46. Sewage connection pipe, 47. Connection channel;

[0033] Flushing system 50, flushing well 51, flushing water pipe 52, flushing valve 53, flushing well cover 54;

[0034] 60. Expansion manhole, 61. Block branch pipe, 62. Steel pipe adapter, 63. Manhole body, 64. Manhole cover, 65. Maintenance ladder, 66. Brickwork trough;

[0035] Inspection port 70, inspection tee 71, inspection blind blockage 72. Detailed Implementation

[0036] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0037] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0038] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0039] Reference Figures 1 to 7A gravity-flow sewage pipe corridor system under a sloping road includes: a main corridor 10. A sewage tank 20 is installed within the main corridor 10. A main sewage pipe 30 is installed within the sewage tank 20. The main sewage pipe 30 is installed along the length of the sewage tank 20. Several pipe supports 31 are installed below the main sewage pipe 30. The bottom surface of the sewage tank 20 is undulating. The main sewage pipe 30 undulates with the sewage tank 20. The pipe supports 31 cooperate with the sewage tank 20 to achieve the undulating arrangement of the main sewage pipe 30. It also includes a sewage connection well 40. The sewage connection well 40 is connected to the main sewage pipe 30 and is used to connect sewage branch pipes 41 at different burial depths. It also includes a flushing system 50. The flushing system 50 is connected to the sewage connection well 40 and is used to flush the pipes of the sewage connection well 40 and part of the main sewage pipe 30.

[0040] It is understandable that the undulating sewage tank 20 and sewage main pipe 30 significantly reduce the required burial depth of the sewage main pipe 30 and reduce the cost of the integrated pipe gallery. At the same time, the sewage branch pipe 41 is connected through the sewage connection well 40 without the need for a large pipe gallery width, thus saving costs. The sewage main pipe 30 is flushed in sections by the flushing system 50 to avoid the accumulation of dirt in the pipe.

[0041] It should be noted that in flat-slope areas, the main body of the utility tunnel is arranged in a wave-like pattern to reduce the burial depth by 0.9 meters per kilometer (under normal slope conditions). Furthermore, by varying the height of the pipe supports 31, the lower and middle spaces within the main body of the utility tunnel 10 are fully utilized to meet the design slope of the sewage pipeline, thereby reducing the project cost.

[0042] Reference Figure 1 The main sewage pipe 30 is equipped with several overhead inspection wells 60. The overhead inspection wells 60 are spaced 60 to 70 meters apart. The overhead inspection wells 60 are used to connect to the block branch pipes 61 located above the pipe gallery.

[0043] Reference Figure 3 The extended manhole 60 includes a steel pipe adapter 62, a manhole body 63, a manhole cover 64, a maintenance ladder 65, and a brick-lined flow channel 66. The manhole body 63 is connected to the main sewage pipe 30 via the steel pipe adapter 62. The manhole cover 64 is located at the upper end of the manhole body 63. The maintenance ladder 65 is located on the side wall of the manhole body 63. The brick-lined flow channel 66 is located below the manhole body 63. A block branch pipe 61 connects to the manhole body 63.

[0044] Reference Figure 1 and Figure 7 Inspection ports 70 are provided on the main sewage pipes 30 of two adjacent extended inspection wells 60. The inspection ports 70 include inspection tees 71 and inspection blind plugs 72.

[0045] Reference Figure 1The main sewage pipe 30 is equipped with several vent pipes 11, spaced 200 meters apart. Each vent pipe 11 passes through a concrete support 12 above the main pipe gallery 10 and extends upwards. Each vent pipe 11 has a vent cap 13 at its end. The bottom of the vent cap 13 is more than 0.6 meters above the ground.

[0046] Reference Figure 4 The sewage connection well 40 includes a connection well body 42, a sedimentation tank 43, a connection well cover 44, a connection well ladder 45, and a sewage connection pipe 46. A sewage branch pipe 41 is connected to the connection well body 42. The sedimentation tank 43 is located at the bottom of the connection well body 42. The connection well cover 44 is located at the top of the connection well body 42. The connection well ladder 45 is located on the side wall of the connection well body 42. The sewage connection pipe 46 connects the connection well body 42 and the main sewage pipe 30.

[0047] It should be noted that the sewage connection well 40 can accommodate the connection of sewage branch pipes 41 at different burial depths and solve the connection problem of sewage branch pipes 41 on both sides; the sewage connection well 40 is equipped with a sedimentation tank 43, which can effectively deposit some particulate pollutants and reduce the impact of pollutant accumulation on the main sewage pipe 30.

[0048] Reference Figure 4 The flushing system 50 includes a flushing well 51, a flushing water pipe 52, a flushing valve 53, and a flushing well cover 54. A sewage connection pipe 46 passes through the flushing well 51. The flushing water pipe 52 is installed in the flushing well 51 and communicates with the sewage connection pipe 46. The flushing valve 53 is installed on the sewage connection pipe 46. The flushing valve 53 prevents flushing water from entering the connection well body 42.

[0049] It should be noted that the operating space within the main body 10 of the utility tunnel is limited. By installing flushing wells 51, inspection ports 70, and overhead inspection wells 60, both mechanical cleaning and routine manual cleaning methods are provided. This forms a combined internal and external system, with external flushing as the primary method and internal inspection port cleaning as a secondary method. This system does not occupy internal space within the tunnel and effectively prevents flushing water overflow. Each zone can be flushed independently via gate valves, making maintenance of the sewage pipes entering the tunnel more convenient.

[0050] It should be noted that, in the embodiments of the present invention, a flushing system 50 is set at intervals. It is recommended that one set be set for each pipe gallery section or determined in conjunction with the specific site service. When the flushing system 50 is flushing, the flushing valve 53 of the upstream flushing well 51 is closed to prevent the flushing water from overflowing into the connection well body 42, and the flushing valve 53 of the downstream flushing well 51 is opened to flush the sludge of the sewage main pipe 30 into the connection well body 42.

[0051] Reference Figure 6Two sewage connection wells 40 form a group. The two sewage connection wells 40 are respectively located on both sides of the main body 10 of the pipe gallery, and the two sewage connection wells 40 are connected by a connecting channel 47. One of the two sewage connection wells 40 is connected to a sewage connection pipe 46.

[0052] It is worth noting that in some embodiments of the present invention, when sewage branch pipes 41 need to be connected to both sides of the main body 10 of the pipe gallery, two sewage connection wells 40 are respectively set on both sides of the main body 10 of the pipe gallery and connected through a connecting channel 47. One of the sewage connection wells 40 can be connected to the main sewage pipe 30 through a sewage connection pipe 46.

[0053] Furthermore, in some embodiments of the present invention, the connecting channel 47 is inclined with a slope of 0.5%.

[0054] Reference Figure 5 It also includes several wastewater gate valves 32. These wastewater gate valves 32 are installed on the main wastewater pipe 30. The wastewater gate valves 32 are located downstream of the wastewater connection pipe 46.

[0055] It is worth noting that the wastewater gate valve 32 is used to divide the main wastewater pipe 30 to achieve segmented flushing.

[0056] It is worth noting that, in the embodiments of the present invention, the sewage main pipe 30 and various connecting pipes are made of ductile iron, while the overhead inspection well 60, vent pipe 11, and flushing water pipe 52 are made of steel fittings. The combination of ductile iron pipes and steel fittings in the sewage pipeline entering the corridor combines the durability and stability of ductile iron pipes with the ease of maintenance. Steel fittings offer fewer joints, better sealing, flexible fitting options, and ease of installation.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A gravity-flow sewage pipe inlet system under a level road, characterized in that, include: The main body of the pipe gallery (10) is equipped with a sewage tank (20) and a sewage main pipe (30) is installed in the sewage tank (20). The sewage main pipe (30) is installed along the length of the sewage tank (20). Several pipe supports (31) are installed below the sewage main pipe (30). The bottom surface of the sewage tank (20) is wavy and undulating. The sewage main pipe (30) undulates with the sewage tank (20). The pipe supports (31) cooperate with the sewage tank (20) to realize the wavy arrangement of the sewage main pipe (30). Sewage connection well (40), which is connected to the main sewage pipe (30), and is used to connect sewage branch pipes (41) with different burial depths. A flushing system (50) is connected to the sewage connection well (40) and is used to flush the pipeline of the sewage connection well (40) and part of the sewage main (30). The main sewage pipe (30) is equipped with several overhead inspection wells (60), which are spaced 60 to 70 meters apart. The overhead inspection wells (60) are used to connect to the block branch pipes (61) located on the upper part of the pipe gallery. The extended inspection well (60) includes: a steel pipe adapter (62), an inspection well body (63), a manhole cover (64), a maintenance ladder (65), and a brick-lined flow channel (66). The inspection well body (63) is connected to the main sewage pipe (30) through the steel pipe adapter (62). The manhole cover (64) is located at the upper end of the inspection well body (63). The maintenance ladder (65) is located on the side wall of the inspection well body (63). The brick-lined flow channel (66) is located below the inspection well body (63). The neighborhood branch pipe (61) is connected to the inspection well body (63). The sewage connection well (40) includes a connection well body (42), a sedimentation tank (43), a connection well cover (44), a connection well ladder (45), and a sewage connection pipe (46). The sewage branch pipe (41) is connected to the connection well body (42). The sedimentation tank (43) is located at the bottom of the connection well body (42). The connection well cover (44) is located at the top of the connection well body (42). The connection well ladder (45) is located on the side wall of the connection well body (42). The sewage connection pipe (46) connects the connection well body (42) and the main sewage pipe (30). The flushing system (50) includes a flushing well (51), a flushing water pipe (52), a flushing valve (53), and a flushing well cover (54). The sewage connection pipe (46) passes through the flushing well (51). The flushing water pipe (52) is installed in the flushing well (51) and communicates with the sewage connection pipe (46). The flushing valve (53) is installed on the sewage connection pipe (46). The flushing valve (53) can prevent flushing water from entering the connection well body (42). It also includes a number of sewage knife gate valves (32), which are installed on the sewage main pipe (30) and are located downstream of the sewage connection pipe (46).

2. The gravity flow sewage pipe inlet system under a level road as described in claim 1, characterized in that, The two adjacent extended inspection wells (60) are provided with inspection ports (70) on the main sewage pipes (30), and the inspection ports (70) include inspection tees (71) and inspection blind plugs (72).

3. The gravity flow sewage pipe inlet system under a level road as described in claim 2, characterized in that, The sewage main pipe (30) is provided with several vent pipes (11), which are spaced 200 meters apart. The vent pipes (11) pass through the concrete support (12) above the main body of the pipe gallery (10) and extend upward. The end of the vent pipe (11) is provided with a vent cap (13), and the bottom of the vent cap (13) is more than 0.6 meters away from the ground.

4. A gravity-flow sewage pipe inlet system under a level road as described in claim 1, characterized in that, Two sewage connection wells (40) are a group of two sewage connection wells (40) respectively located on both sides of the main body (10) of the pipe gallery. The two sewage connection wells (40) are connected through a connecting channel (47). One of the two sewage connection wells (40) is connected to the sewage connection pipe (46).

5. A gravity-flow sewage pipe inlet system under a level road as described in claim 4, characterized in that, The connecting channel (47) is inclined with a slope of 0.5%.

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