Shallow-buried pressure rainwater drainage pipeline system for municipal sunken road

Abstract

The utility model relates to the field of municipal drainage engineering, in particular to a municipal sunken road shallowly-buried pressure rainwater drainage pipeline system which comprises a regulation and storage well, the regulation and storage well is communicated with a rainwater pipe, the regulation and storage well comprises a first-stage silt basin, a second-stage filter basin and a third-stage reservoir which are communicated in sequence, and a water pump unit is installed at the bottom in the third-stage reservoir. The water pump unit comprises a low-power water pump unit and a high-power water pump unit; the water pump unit is connected with a pressure drainage pipe outside the regulation and storage well; and a water level monitoring instrument is arranged in the third-stage reservoir and is respectively connected with an alarm device and the water pump unit. According to the system, the drainage capacity of a drainage project rainwater system is improved, a pressure flow pipeline of the drainage project rainwater system is achieved, the pressure flow pipeline is not influenced by gravity, and the rainwater pipeline has the capacity of avoiding obstacles and can be shallowly buried, so that the project cost is saved; and the possibility of uneven settlement of the road caused by the influence of pipeline backfilling on the road structure layer is avoided.

Description

Technical Field

[0001] The utility model relates to the field of municipal drainage engineering, in particular to a municipal sunken road shallowly buried pressure rainwater drainage pipeline system. Background Art

[0002] In the field of drainage pipeline construction, according to Article 3.2.3 of the "Outdoor Water Supply and Drainage Design Standard" (GB50014-2021): "Drainage pipeline facilities should ensure the transfer, storage and discharge of rainwater during the design recurrence period of the rainwater pipeline. The impact of the water level of the receiving water body should be considered." Article 3.2.5 stipulates: "The design of the rainwater system should take engineering and non-engineering measures to enhance the resilience of the city to rainfall exceeding the design recurrence period of waterlogging prevention and control, and emergency measures should be taken to avoid casualties. The normal order of the city should be restored quickly after the disaster."

[0003] At present, in the design of urban municipal drainage, most cities design drainage standards according to the annual maximum rainfall intensity, which is usually called the "once in a year" design standard; the "once in two years" design standard can withstand short-term heavy rainfall, and the "once in five years" design standard can withstand short-term rainstorms. The technical problems in the existing technology are as follows: Upgrading urban drainage capacity is not easy. For urban waterlogging, water pumps are generally used for drainage. Temporary water pumps cannot fundamentally eliminate the risk of urban waterlogging. New construction and reconstruction of pumping stations can solve the risk of urban waterlogging, but it is often difficult to achieve due to environmental conditions.

[0004] Due to cost constraints, municipal integrated pipe corridors generally do not allow the access of gravity flow pipes such as drainage engineering rainwater systems. Once connected, the depth of the municipal integrated pipe corridor will be deepened by the gravity flow pipes, resulting in an increase in the project cost. The drainage engineering rainwater system alone occupies the space in the lower structure layer of the road. Because the backfill material of the pipe is different from the roadbed soil, the road surface will settle unevenly, affecting the road use function. When the sunken roads in municipal underground transportation are flooded in the city due to rainwater, the traffic function is affected. In serious cases, there are major safety risks, threatening the lives of passengers in the moving vehicles. Summary of the invention

[0005] The problem to be solved by the present invention is to overcome the shortcomings of the background technology and provide a municipal sunken road shallowly buried pressure rainwater drainage pipeline system.

[0006] The present invention is achieved through the following technical solutions:

[0007] A municipal sunken road shallow buried pressure rainwater drainage pipeline system includes a regulating well, which is connected to a rainwater pipe. The regulating well includes a primary sedimentation tank, a secondary filtration tank and a tertiary water storage tank which are connected in sequence, wherein the primary sedimentation tank and the secondary filtration tank are separated in the middle and lower parts by a partition wall, and a trash retaining wall is arranged in the middle of the secondary filtration tank, the trash retaining wall abuts against the top of the regulating well upwards, and the trash retaining wall is connected to a filter grille downwards, and the lower end of the filter grille abuts against the bottom of the regulating well; a water pump unit is installed at the bottom of the tertiary water storage tank, and the water pump unit includes a low-power water pump unit and a high-power water pump unit. The pump unit is connected to the pressure drainage pipe outside the regulating well, and the pressure drainage pipe is connected to the drainage well or the drainage outlet; a water level monitoring instrument is arranged in the three-level water storage tank, and the water level monitoring instrument is respectively connected to the alarm device and the water pump unit, and a starting water level value and a warning water level value are arranged in the water level monitoring instrument. When the water level value is equal to or higher than the starting water level value but lower than the warning water level value, the water level monitoring instrument controls the low-power water pump unit to start; when the water level value is equal to or higher than the warning water level value, the water level monitoring instrument controls both the low-power water pump and the high-power water pump unit to start, and at the same time controls the alarm device to alarm.

[0008] Furthermore, the tertiary water storage tank is provided with an overflow pipe at a position higher than the warning water level.

[0009] Furthermore, an inspection port is provided above the secondary filter tank.

[0010] The municipal sunken road shallowly buried pressure rainwater drainage pipe system provided by the present invention improves the traditional gravity flow rainwater drainage pipe into pressure flow drainage through engineering measures, thereby increasing the storage and drainage capacity of the local rainwater system; at the same time, the flexibility of the use scenarios of the rainwater pipe is increased; the pressure drainage pipe has the ability to avoid obstacles and can be connected to the municipal integrated pipeline corridor to reduce the occupation of road structure space and reduce the difficulty of pipeline maintenance, thereby reducing the risk of uneven settlement of the road caused by buried pipelines.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1) The drainage capacity of the rainwater system of the drainage project has been increased, and the self-adaptation of high and low load operations under different precipitation conditions has been achieved. It has drainage capacity under low load and prevents waterlogging caused by short-term heavy rainfall under high load;

[0013] 2) The pressure flow pipe of the rainwater system of the drainage project is realized. The pressure flow pipe is not affected by gravity. The rainwater pipe has the ability to avoid obstacles and can be buried shallowly to save engineering costs;

[0014] 3) It realizes the conditions for the drainage project rainwater system to be connected to the municipal pipe gallery, reduces the difficulty of pipeline repair, transformation and maintenance, and avoids the possibility of uneven road settlement caused by the road structure layer being affected by pipeline backfill;

[0015] 4) Provides a normalized drainage and flood prevention system for municipal sunken roads;

[0016] 5) Centralize maintenance work on regulating and storage wells to reduce the difficulty of maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0018] Figure 2 This is a flow chart of the architecture of this embodiment.

[0019] In the figure, 1 is a regulating well, 2 is a water pump unit, 3 is an overflow pipe, 4 is a water level monitoring instrument, 5 is a rainwater pipe, 6 is a partition wall, 7 is a pressure drain pipe, 8 is a primary sedimentation tank, 9 is a secondary filter tank, 10 is a tertiary water storage tank, 11 is a starting water level value, 12 is an early warning water level value, 13 is a filter screen, 14 is an inspection port, and 15 is a trash retaining wall. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0021] This embodiment includes a regulating storage well 1, which is a long asymmetric structure. The access pipeline of the regulating storage well 1 is a rainwater pipe 5 of the municipal system, that is, the regulating storage well 1 is connected to the rainwater pipe 5, and the rainwater pipe 5 discharges the collected rainwater into the regulating storage well 1. The outflow pipeline of the regulating storage well 1 is a pressure drainage pipe 7 and an overflow pipe 3. The interior of the regulating storage well 1 is a three-level chamber structure, including a primary sedimentation tank 8, a secondary filtration tank 9 and a tertiary water storage tank 10 connected in sequence. The middle and lower parts of the primary sludge tank 8 and the secondary filter tank 9 are separated by a partition wall 6, the primary sludge tank 8 and the upper part of the secondary filter tank 9 are connected, and a trash retaining wall 15 is arranged in the middle of the secondary filter tank 9, the trash retaining wall 15 abuts against the top of the regulating well 1 upward, and the trash retaining wall 15 is connected to the filter grille 13 downward, and the lower end of the filter grille 13 abuts against the bottom end of the regulating well 1, the trash retaining wall 15 divides the upper part of the secondary filter tank 9 into two parts, and the filter grille 13 connects the two parts of the secondary filter tank 9 separated by the trash retaining wall 15 together at the lower part.

[0022] A water pump unit 2 is installed at the bottom of the three-stage water reservoir 10. The installed water pump unit 2 includes a low-power water pump unit and a high-power water pump unit. The high-power water pump unit has a larger water discharge capacity than the low-power water pump unit. The water pump unit 2 is connected to a pressure drain pipe 7 outside the regulating well 1. The pressure drain pipe 7 is connected to a drainage well or a drainage outlet. The water pump unit 2 can discharge the water in the three-stage water reservoir 10 to the drainage well or drainage outlet through the pressure drain pipe 7. The drainage well or drainage outlet acts as a force dissipation flow and plays a safety protection role. According to the specific design flow rate, a variety of forms such as drainage wells and drainage outlets can be selected. A water level monitoring instrument 4 is provided in the three-stage water reservoir 10. The water level monitoring instrument 4 is used to measure the water level value in the three-stage water reservoir 10. The water level monitoring instrument 4 controls the connection alarm device and the water pump unit 2. The water level monitoring instrument 4 can control the low-power water pump unit and the high-power water pump unit in the water pump unit 2 to open and close respectively. The water level monitoring instrument 4 can also control the alarm device to alarm. A starting water level value 11 and a warning water level value 12 are provided in the water level monitoring instrument 4. When the water level value is equal to or higher than the starting water level value 11 and lower than the warning water level value 12, the water level monitoring instrument 4 controls the low-power water pump unit to start for drainage; when the water level value is equal to or higher than the warning water level value 12, the water level monitoring instrument 4 controls the low-power water pump unit and the high-power water pump unit to start for drainage at the same time, and controls the alarm device to alarm at the same time; when the water level value is lower than the warning water level value 12, the low-power water pump unit and the high-power water pump unit are closed at the same time and no drainage is performed, and the tertiary water reservoir 10 is then storing water.

[0023] To further protect the system of the present invention, preferably, an overflow pipe 3 is provided at a position above the warning water level 12 of the tertiary water storage tank 10, and the position of the overflow pipe 3 can be slightly higher than the warning water level 12 by 1-3 cm. To facilitate the maintenance of the regulating storage well 1, preferably, an inspection port 14 is provided above the secondary filter tank 9. Specifically, the inspection port 14 is provided above the secondary filter tank 9 between the trash retaining wall 15 and the tertiary water storage tank 10.

[0024] When there is rainfall in the area served by the system of the present invention, the collected rainwater flows into the regulating well 1 through the rainwater pipe 5. The rainwater is first accumulated and precipitated in the primary sedimentation tank 8 in the regulating well 1, and the heavy debris such as mud and sand sinks to the bottom of the primary sedimentation tank 8. After the water level in the primary sedimentation tank 8 exceeds the height of the tank wall (partition wall 6), the rainwater and light debris overflow into the secondary filter tank 9, and the rainwater flows into the clear water area of ​​the secondary filter tank 9 through the filter grille 13. The light debris is blocked by the filter grille 13 in the muddy water area of ​​the secondary filter tank 9, forming a filtering effect on light debris (such as leaves, paper pieces, etc.) in the rainwater. After the water level in the secondary filter tank 9 exceeds the height of the tank wall, the rainwater overflows into the tertiary water storage tank 10 for water storage. The tertiary water storage tank 10 is equipped with a water pump unit 2. When the water pump unit 2 is working, it can extract the water at the bottom of the tertiary water storage tank 10 into the pressure drainage pipe 7 to form a pressure flow rainwater for drainage. When the water level in the tertiary reservoir 10 is lower than the starting water level value 11, the tertiary reservoir 10 stores water, and the low-power water pump unit and the high-power water pump unit are both turned off; when the water level in the tertiary reservoir 10 is equal to or higher than the starting water level value 11 and lower than the warning water level value 12, the water level monitoring instrument 4 controls the low-power water pump unit to start and drain the water; when the water level in the tertiary reservoir 10 is equal to or higher than the warning water level value 12, the water level monitoring instrument 4 controls the low-power water pump unit and the high-power water pump unit to start and drain the water, increasing the drainage volume to prevent urban waterlogging due to untimely drainage; at the same time, when the warning water level value 12 is reached, the water level monitoring instrument 4 transmits a signal to the alarm device to give an alarm to the municipal management department. When the precipitation exceeds the processing capacity of the system of the present invention, the rainwater in the tertiary reservoir 10 can be discharged to the low-lying area outside the system through the overflow pipe 3, forming a self-protection mechanism of the system. During normal operation, the pressurized rainwater that is pressurized by the water pump unit 2 and flows into the pressure drain pipe 7 is discharged into the drainage well or drainage outlet through the pressure drain pipe 7. After the force is dissipated by the drainage well or drainage outlet, it is discharged into the water system of the basin and discharged from the urban area.

[0025] It should be noted that after the rainwater is pressurized to form pressure flow rainwater, the drainage capacity of the rainwater system of the drainage project is improved, achieving an effect of more than 5 times the flow rate under the same pipe diameter, or reducing the pipe diameter by more than 2 times under the same flow rate. The system transmission pipeline pressure drainage pipe 7 breaks through the limitation that the traditional gravity flow rainwater pipe installation requires a certain slope. The pipeline can be installed flexibly and can be installed shallowly while avoiding obstacles in the upward and downward directions. It has application scenarios in urban renewal projects; the system of the present invention has the ability to access the municipal integrated pipeline corridor, so that the construction of the integrated pipeline corridor does not need to consider the slope of the gravity flow pipeline, which is more economical and flexible. The rainwater system connected to the municipal integrated pipeline corridor no longer occupies a specific space under the road, avoiding the uneven settlement problem caused by the different quality of the backfill material of the rainwater pipe 5 and the roadbed. This system needs to carry out system maintenance and sludge cleaning operations after the rainy season ends. The operation work is concentrated on the node of the storage well 1, which is easy to maintain and has low operation difficulty.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A municipal sunken road shallow buried pressure rainwater drainage pipeline system, comprising a regulating storage well (1), the regulating storage well (1) being connected to a rainwater pipe (5), characterized in that: The regulating well (1) comprises a primary sedimentation tank (8), a secondary filtration tank (9) and a tertiary water storage tank (10) which are connected in sequence, wherein the primary sedimentation tank (8) and the secondary filtration tank (9) are separated in the middle and lower parts by a partition wall (6), and a trash retaining wall (15) is provided in the middle of the secondary filtration tank (9), the trash retaining wall (15) abuts against the top of the regulating well (1) upwards, and the trash retaining wall (15) is connected to the filter grille (13) downwards, and the lower end of the filter grille (13) abuts against the bottom of the regulating well (1); a water pump unit (2) is installed at the bottom of the tertiary water storage tank (10), the water pump unit (2) comprises a low-power water pump unit and a high-power water pump unit, and the water pump unit (2) is connected to the pressure outside the regulating well (1). The water level monitoring instrument (4) is connected to the water well or the water outlet; the water level monitoring instrument (4) is connected to the alarm device and the water pump unit (2) respectively; the water level monitoring instrument (4) is provided with a starting water level value (11) and a warning water level value (12); when the water level value is equal to or higher than the starting water level value (11) and lower than the warning water level value (12), the water level monitoring instrument (4) controls the low-power water pump unit to start; when the water level value is equal to or higher than the warning water level value (12), the water level monitoring instrument (4) controls both the low-power water pump unit and the high-power water pump unit to start, and controls the alarm device to sound an alarm.

2. The municipal sunken road shallow buried pressure rainwater drainage pipeline system according to claim 1 is characterized by: The tertiary water storage tank (10) is provided with an overflow pipe (3) at a position higher than the warning water level.

3. The municipal sunken road shallow buried pressure rainwater drainage pipeline system according to claim 2 is characterized by: An inspection port (14) is provided above the secondary filter tank (9).

Images