Rainwater regulation and storage facility

Abstract

The invention relates to the technical field of rainwater regulation and storage, and particularly discloses a rainwater regulation and storage facility which is used for solving the problems that an existing rainwater regulation and storage pool depends on mechanical drainage and is prone to failure, long-term water accumulation and stinking are caused, discarding flow control is extensive, the discarding flow control concept is not matched with the total amount and peak value control concept, energy consumption is high, and the operation and maintenance cost is high. A water inlet pipe is arranged above the rainwater storage pond, the input end of the water inlet pipe is connected with an inspection well, the top of the inspection well is communicated with the ground, the bottom of the inspection well is connected with a first rainwater pipe and a community rainwater pipe, the community rainwater pipe is communicated with the first rainwater pipe, the tail end of the first rainwater pipe is connected with a sand sediment trap, and a discharge pipe is arranged at the bottom of the rainwater storage pond. One side of the sand sediment trap is communicated with the rainwater storage tank through a discharge pipe; an operation mechanism of rainwater initial-stage direct drainage, rainstorm pool-entering peak clipping and after-rain self-flowing slow drainage is constructed through the rainwater pipeline elevation difference, diameter-limiting flow division and flap valve non-return, long-term ponding, stinking and clogging of the storage pond are avoided, and mechanical drainage energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of bridge monitoring technology, and in particular to a rainwater storage facility. Background Technology

[0002] With the advancement of sponge city construction, rainwater storage measures in building design are becoming more and more common, but some problems have gradually emerged in actual operation: (1) Some rainwater storage tanks adopt mechanical drainage, and there are problems such as the drainage pumps being old and in disrepair, and the liquid level and water level detectors being damaged. This can easily lead to the rainwater storage tank accumulating water all year round, thus losing its rainwater storage function. At the same time, the stagnant water in the tank becomes smelly, which seriously affects the surrounding environment; (2) In addition, outdoor diversion wells often use flow-type diversion devices, which are usually operated according to the experience of diverting rainwater in the first 5 minutes. However, in reality, the rainwater in the community may not reach the runoff peak after 5 minutes. This fixed-duration rainwater diversion method is contrary to the standard requirements that rainwater storage tanks need to achieve total runoff control and runoff peak control of the source rainwater; (3) At the same time, mechanical drainage itself has high energy consumption, resulting in poor overall energy-saving effect of the building. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a rainwater storage facility that utilizes the elevation difference of rainwater pipes, diameter limiting and diversion and flap gate check to construct an operation mechanism for direct discharge of rainwater in the early stage, peak shaving of rainwater into the pool during heavy rain, and slow gravity discharge after rain, so as to avoid long-term water accumulation, odor and siltation in the storage pool and reduce the energy consumption of mechanical drainage.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A rainwater storage facility includes a rainwater storage tank, an inlet pipe at the top of the rainwater storage tank, an inspection well at the input end of the inlet pipe, the top of the inspection well being connected to the ground, a first rainwater pipe and a community rainwater pipe at the bottom of the inspection well, the community rainwater pipe being connected to the first rainwater pipe, a sedimentation well at the end of the first rainwater pipe, a discharge pipe at the bottom of the rainwater storage tank, a discharge pipe connecting one side of the sedimentation well to the rainwater storage tank via the discharge pipe, and a community-to-municipal rainwater pipe at the other side of the sedimentation well, with a flap gate at the end of the discharge pipe at the sedimentation well to ensure that rainwater in the sedimentation well cannot enter the rainwater storage tank during initial heavy rain or ordinary light rain.

[0006] As a further aspect of the present invention, the diameter of the first rainwater pipe is less than or equal to that of the community rainwater pipe in order to limit the flow, prevent the bypass pipe from competing for the flow, ensure that rainwater enters the rainwater storage tank first, realize peak shaving control of the total rainwater discharge, and avoid instantaneous large flow of rainwater directly rushing into the municipal drainage network.

[0007] As a further aspect of the present invention, the diameter of the inlet pipe is the same as that of the community's rainwater pipe, and the bottom of the inlet pipe is flush with one-third of the height of the community's rainwater pipe, ensuring that rainwater cannot enter the rainwater storage tank during normal rainfall or when the peak period has not yet been reached. Only when the amount of rainwater reaches a certain level can it enter the rainwater storage tank.

[0008] As a further aspect of the present invention, the diameter of the discharge pipe is smaller than that of the inlet pipe. The diameter of the discharge pipe is calculated according to the design, specifically to ensure that the water in the rainwater storage tank is emptied within a preset time, meeting the design specifications of sponge cities. While ensuring that the rainwater storage tank restores its effective volume on schedule, it achieves controlled and slow discharge to reduce peak flow, avoids large-flow direct discharge from impacting the municipal pipe network, and reduces energy consumption. The bottom of the discharge pipe is flush with the bottom of the rainwater pipe into the municipal rainwater system and with the bottom of the rainwater storage tank, achieving gravity-flow drainage and emptying of the bottom without stagnant water, avoiding long-term water accumulation and odor, and reducing reliance on mechanical drainage and energy consumption.

[0009] As a further aspect of the present invention, the effective volume of the rainwater storage tank is determined by calculation based on the design specifications for sponge cities. The top of the rainwater storage tank is flush with the top of the inlet pipe to ensure that the designed rainwater storage capacity meets the requirements for total runoff and peak flow control. Furthermore, the unified elevation improves the inlet connectivity and operational water level stability, and reduces the risk of overflow and backflow.

[0010] As a further aspect of the present invention, the parameters of the inspection well are determined according to the design specifications for outdoor rainwater inspection wells. The bottom of the first rainwater pipe and the community rainwater pipe connected to the inspection well are flush, which reduces hydraulic loss and turbulent siltation, ensures smooth rainwater flow, and improves the operational stability and maintenance reliability of the rainwater storage facilities.

[0011] As a further aspect of the present invention, the bottom of the sedimentation well is provided with a deep pit with a diameter of 500mm to efficiently intercept sediment and prevent siltation. The first rainwater pipe is higher than the municipal rainwater pipe into the community. The height difference between the first rainwater pipe and the municipal rainwater pipe into the community meets the requirements for forming a preset storage volume in the rainwater storage tank. The required water depth is formed in conjunction with the elevation difference between the first rainwater pipe and the municipal rainwater pipe into the community, thereby improving drainage smoothness and operational reliability while ensuring that the storage volume meets the standard.

[0012] It should be noted that the specific principle of the elevation difference calculation is as follows: First, calculate the effective storage volume that the rainwater storage tank needs to provide according to the sponge city design specifications. Then, divide this effective volume by the effective area of ​​the rainwater storage tank that can actually participate in water storage on the plane to obtain the effective water depth required to form this volume. On this basis, add the necessary safety margin for operation (such as the free height of the tank top and the backflow prevention margin), the sedimentation reserve depth, and the head loss generated during the inflow and outflow process to obtain the total water level difference required by the rainwater storage tank. Since the bottom of the discharge pipe is flush with the bottom of the municipal access pipe and the bottom of the tank, the lowest discharge water level can be taken as the bottom elevation of the tank. Therefore, as long as the control water level elevation corresponding to the first rainwater pipe is raised relative to the discharge control elevation of the municipal access pipe to the above-mentioned total water level difference, it can be guaranteed that the preset storage water depth can be formed in the storage tank, thereby meeting the preset storage volume requirements.

[0013] As a further embodiment of the present invention, an inspection port is provided on the top of the rainwater storage tank to serve as a passage for cleaning and maintenance of the rainwater storage tank. A fall-prevention net is provided inside the inspection port to prevent foreign objects from falling in.

[0014] As a further embodiment of the present invention, a steel ladder is provided below the fall protection net to facilitate maintenance personnel to enter the rainwater storage tank for inspection and maintenance. The outside of the rainwater storage tank is connected to a sedimentation pit. Sludge or sediment that enters the rainwater storage tank for various reasons enters the sedimentation pit and is cleaned regularly by the property management.

[0015] Technical advantages of the rainwater storage facility of the present invention:

[0016] (1) Ensure that the water in the rainwater storage tank is running water and will not produce odors, so as to avoid polluting the surrounding environment;

[0017] (2) No mechanical lifting is used, making it safe, environmentally friendly, and energy-saving;

[0018] (3) Ensure the control of total runoff and peak runoff of rainwater at the source;

[0019] (4) Simple structure, low investment cost, and low maintenance cost;

[0020] (5) No electrical equipment, low failure rate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a rainwater storage facility according to the present invention;

[0022] In the diagram: 1. Rainwater storage tank; 2. Inlet pipe; 3. Inspection well; 4. First rainwater pipe; 5. Community rainwater pipe; 6. Sedimentation well; 7. Discharge pipe; 8. Community rainwater pipe leading to municipal stormwater; 9. Maintenance port; 10. Sedimentation pit. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] This embodiment describes the composition of a rainwater storage facility proposed in this invention.

[0026] like Figure 1 As shown, the present invention proposes a rainwater storage facility, including a rainwater storage tank 1, an inlet pipe 2 above the rainwater storage tank 1, an inspection well 3 connected to the input end of the inlet pipe 2, the top of the inspection well 3 connected to the ground, a first rainwater pipe 4 and a community rainwater pipe 5 connected to the bottom of the inspection well 3, the community rainwater pipe 5 connected to the first rainwater pipe 4, a sedimentation well 6 connected to the end of the first rainwater pipe 4, a discharge pipe 7 at the bottom of the rainwater storage tank 1, one side of the sedimentation well 6 connected to the rainwater storage tank 1 through the discharge pipe 7, the other side of the sedimentation well 6 connected to the community-to-municipal rainwater pipe 8, and a flap gate installed at the end of the discharge pipe 7 at the sedimentation well 6.

[0027] It should be noted that the diameter of the first rainwater pipe 4 is less than or equal to that of the community rainwater pipe 5, which can limit the flow of the direct discharge channel and prevent bypass flow, so that when the rainfall increases, the rainwater is preferentially diverted into the rainwater storage tank 1, thereby achieving peak shaving and total volume control.

[0028] It should be noted that the diameter of the inlet pipe 2 is the same as that of the community rainwater pipe 5, and the bottom of the inlet pipe 2 is flush with the height of the community rainwater pipe 5 at 1 / 3 of its length.

[0029] The inlet pipe 2 has the same diameter as the community rainwater pipe 5, and its bottom is flush with 1 / 3 of the height of the community rainwater pipe 5. This ensures smooth direct discharge and reduces sand inclusion in the pool during light rain. When the rainfall increases and the water level rises to this elevation, it automatically triggers the diversion of water into the pool, achieving stable peak shaving and storage.

[0030] It should be noted that the diameter of the discharge pipe 7 is smaller than that of the inlet pipe 2. The diameter of the discharge pipe 7 is calculated according to the design, specifically to ensure that the water in the rainwater storage tank 1 is emptied within a preset time. The bottom of the discharge pipe 7 is flush with the bottom of the municipal rainwater pipe 8 and the bottom of the rainwater storage tank 1.

[0031] The diameter of the discharge pipe 7 is smaller than that of the inlet pipe 2 and is determined according to the calculation results of emptying the rainwater storage tank 1 within a preset time. At the same time, the bottom of the pipe is flush with the bottom of the municipal rainwater pipe 8 connected to the community and the bottom of the rainwater storage tank 1. This can achieve controlled slow discharge and peak reduction, timely restoration of effective volume, and ensure that there is no stagnant water at the bottom of the tank that can be drained by gravity, avoiding long-term water accumulation and odor, and reducing reliance on mechanical drainage and energy consumption.

[0032] It should be noted that the effective volume of the rainwater storage tank 1 is determined by calculation according to the sponge city design code, and the top of the rainwater storage tank 1 is flush with the top of the inlet pipe 2.

[0033] The effective volume of the rainwater storage tank 1 is calculated and determined according to the design specifications for sponge cities, and the top of the tank is flush with the top of the inlet pipe 2 to ensure that the storage capacity meets the requirements for total runoff and peak flow control. The water level is stabilized by a uniform elevation to reduce the risk of overflow and backflow.

[0034] It should be noted that the parameters of inspection well 3 are determined according to the design specifications for outdoor rainwater inspection wells, and the bottom of the first rainwater pipe 4 and the community rainwater pipe 5 connected to inspection well 3 are flush.

[0035] The parameters of inspection well 3 are determined according to the outdoor rainwater inspection well specifications, and the bottom of the first rainwater pipe 4 is flush with the bottom of the community rainwater pipe 5 to ensure that the flow section and structural strength of the node are compliant, reduce water head loss and turbulent siltation caused by falling, and improve drainage smoothness, anti-clogging ability and maintenance reliability.

[0036] It should be noted that the bottom of the sedimentation well 6 is equipped with a deep mud pit with a diameter of 500mm. The first rainwater pipe 4 is higher than the municipal rainwater pipe 8 that flows into the community. The height difference between the first rainwater pipe 4 and the municipal rainwater pipe 8 meets the requirement of forming a preset storage volume in the rainwater storage tank.

[0037] The bottom of the sedimentation well 6 is equipped with a 500mm diameter deep pit to prioritize sedimentation and intercept silt and impurities, reducing the risk of siltation in the pipeline and rainwater storage tank 1. At the same time, by raising the elevation of the first rainwater pipe 4 relative to the municipal rainwater pipe 8 connected to the community, the required water depth is formed in the rainwater storage tank 1 by utilizing the elevation difference between the two. Thus, the preset storage volume can be obtained without mechanical drainage, achieving peak shaving and peak shifting, and improving operational stability and environmental sanitation.

[0038] It should be noted that the top of the rainwater storage tank 1 is provided with an inspection port 9, and an anti-fall net is installed inside the inspection port 9. This facilitates inspection, dredging and maintenance without damaging the tank structure, and effectively prevents personnel or debris from falling into the tank, thereby improving operational safety and management reliability.

[0039] Example 2

[0040] Unlike Example 1, this example describes the rainwater storage process of a rainwater storage facility proposed in this invention during light rain and heavy rain.

[0041] During light rain, the operation of the rainwater storage facility proposed in this invention specifically includes: rainwater from the community is collected through the rainwater inlet and enters the inspection well 3 through the community rainwater pipe 5. The amount of rainwater is small, and all the rainwater is discharged into the municipal rainwater network through the first rainwater pipe 4 and the community-to-municipal rainwater pipe 8. The discharge pipe 7 is equipped with a flap gate at the sedimentation well 6, so that the rainwater in the sedimentation well 6 cannot enter the rainwater storage tank 1.

[0042] It should be noted that under light rain conditions, rainwater is collected through the rainwater inlet and enters the inspection well 3 through the community rainwater pipe 5. Due to the small water volume, the rainwater preferentially flows directly into the municipal rainwater network through the first rainwater pipe 4, achieving direct discharge without storage. This avoids repeated water intake and stagnation in the rainwater storage tank 1 under frequent light rain conditions, reducing the risk of foul odors and mosquito breeding in the tank, and lowering the probability of sediment entering the tank and causing siltation and water quality deterioration. At the same time, the discharge pipe 7 is equipped with a flap gate at the sedimentation well to prevent rainwater in the sedimentation well 6 from flowing back into the rainwater storage tank 1. This serves as a one-way isolation and anti-backflow function, ensuring that the storage tank remains dry or at a low water level, maintaining the effective volume in a usable standby state, and improving the storage response capacity during moderate to heavy rain. Furthermore, there is no need to start and stop the drainage pump during light rain, reducing operating energy consumption and maintenance frequency, and improving the long-term operational reliability and management economy of the facility.

[0043] During heavy rain, the operation process of the rainwater storage facility proposed in this invention specifically includes:

[0044] (1) In the early stage of the rainstorm, the rainwater in the community is collected through the rainwater inlet and enters the inspection well 3 through the community rainwater pipe 5. The amount of rainwater is small. All the rainwater is discharged into the municipal rainwater network through the first rainwater pipe 4 and the community rainwater discharge pipe (because the end of the discharge pipe 7 is equipped with a flap gate, the rainwater in the sedimentation well 6 cannot enter the rainwater storage tank 1).

[0045] (2) After the initial stage of the rainstorm, the amount of rainwater entering the inspection well 3 increases. Some of the rainwater is discharged into the municipal rainwater network through the first rainwater pipe 4 and the municipal rainwater pipe 8 of the community. Some of the rainwater enters the rainwater storage tank 1 through the inlet pipe 2 for storage. At this time, the water pressure on the left and right sides of the discharge pipe 7 is different. The water pressure on the left side is significantly greater than that on the right side. The rainwater in the rainwater storage tank 1 cannot be discharged and is completely stored in the rainwater storage tank 1.

[0046] (2) When the rainstorm ends, the water pressure on the left side of the discharge pipe 7 is lower than that on the right side, and the rainwater stored in the rainwater storage tank 1 is slowly discharged into the municipal pipe network.

[0047] It should be noted that the above-mentioned operation process during heavy rain utilizes the elevation difference between the flap gate and the pipeline to form an adaptive hydraulic control mechanism of first direct discharge, then storage, and then slow discharge: In the early stage of heavy rain, the rainfall is relatively small, and the rainwater is preferentially connected directly to the municipal pipe network through the first rainwater pipe 4. The flap gate blocks the water in the sedimentation well 6 from entering the rainwater storage tank 1, avoiding the initial rainwater carrying silt and pollutants from entering the tank and causing water quality deterioration and siltation; as the rainfall intensity increases, the water inflow from the inspection well 3 exceeds the capacity of the direct discharge channel, and the rainwater is automatically diverted into the rainwater storage tank 1 for storage. At the same time, due to the discharge... The water pressure difference on both sides of the outlet pipe and the one-way check valve keep the rainwater storage tank 1 in a state of only inflow and no outflow, thereby reducing and staggering the peak runoff in the community, reducing the instantaneous load on the municipal pipe network and the risk of flooding. After the rainstorm, the water level on the outside drops and the pressure difference reverses. The rainwater in the rainwater storage tank 1 slowly flows into the municipal pipe network through the discharge pipe 7, restoring the effective volume according to the set emptying rhythm and avoiding the impact of large-flow direct discharge. This achieves energy-saving operation with little or no mechanical drainage, while improving long-term operational stability and maintenance reliability.

[0048] In summary, this invention integrates the community's rainwater pipes into a manhole 3 designed according to outdoor rainwater inspection well specifications, and connects the bottom of the first rainwater pipe 4 to the community's rainwater pipe 5. A direct discharge channel with a diameter not exceeding that of the community's rainwater pipe 5 is provided in the first rainwater pipe 4 to prevent bypassing and flow competition. Simultaneously, an inlet pipe 2 with the same diameter as the community's rainwater pipe 5 and whose bottom is flush with one-third of the height of the community's rainwater pipe 5 is installed. This ensures that during light rain, rainwater is preferentially discharged directly without entering the rainwater storage tank 1, reducing initial sand and pollution entering the tank. When rainfall increases, the water level rises, automatically triggering diversion into the tank for storage. The effective volume of the rainwater storage tank 1 is calculated and determined according to sponge city design specifications, and the top of the tank is flush with the top of the inlet pipe 2 for stable control. To reduce the risk of overflow and backflow, the bottom of the pool is flush with the bottom of the discharge pipe 7 and the municipal stormwater pipe 8. The diameter of the discharge pipe 7 is designed to be smaller than that of the inlet pipe 2 and to meet the calculated value of the preset time for emptying. The required water storage depth is formed by the flap gate at the end of the discharge pipe 7, the 500mm diameter deep pit in the sedimentation well 6, the elevation difference between the first stormwater pipe 4 and the municipal stormwater pipe 8. This achieves peak shaving and staggering during rainstorms, allowing water to flow slowly and return to effective volume after rain. It also avoids long-term water accumulation, odor, and blockage in the pool, reduces mechanical drainage energy consumption and maintenance costs, and improves the safety of inspection and dredging and the long-term reliability of the facilities through the inspection port 9 equipped with a fall-proof net.

[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0050] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rainwater storage and regulation facility, characterized in that, The rainwater storage tank (1) is equipped with an inlet pipe (2) above the rainwater storage tank (1). The inlet end of the inlet pipe (2) is connected to a manhole (3). The top of the manhole (3) is connected to the ground. The bottom of the manhole (3) is connected to a first rainwater pipe (4) and a community rainwater pipe (5). The community rainwater pipe (5) is connected to the first rainwater pipe (4). The end of the first rainwater pipe (4) is connected to a sedimentation well (6). The bottom of the rainwater storage tank (1) is equipped with a discharge pipe (7). One side of the sedimentation well (6) is connected to the rainwater storage tank (1) through the discharge pipe (7). The other side of the sedimentation well (6) is connected to the community-to-municipal rainwater pipe (8). The end of the discharge pipe (7) is equipped with a flap gate at the sedimentation well (6).

2. A rainwater storage facility according to claim 1, characterized in that, The diameter of the first rainwater pipe (4) is less than or equal to that of the community rainwater pipe (5).

3. A rainwater storage facility according to claim 1, characterized in that, The diameter of the inlet pipe (2) is the same as that of the community rainwater pipe (5), and the bottom of the inlet pipe (2) is flush with the height of the community rainwater pipe (5) at 1 / 3 of its height.

4. A rainwater storage facility according to claim 1, characterized in that, The diameter of the discharge pipe (7) is smaller than that of the inlet pipe (2). At the same time, the diameter of the discharge pipe (7) is calculated according to the design. Specifically, it is to ensure that the water in the rainwater storage tank (1) is emptied within a preset time. The bottom of the discharge pipe (7) is flush with the bottom of the municipal rainwater pipe (8) and the bottom of the rainwater storage tank (1).

5. A rainwater storage facility according to claim 1, characterized in that, The effective volume of the rainwater storage tank (1) is determined by calculation according to the design specifications for sponge cities. The top of the rainwater storage tank (1) is flush with the top of the inlet pipe (2).

6. A rainwater storage and regulation facility according to claim 1, characterized in that, The parameters of the inspection well (3) are determined according to the design specifications for outdoor rainwater inspection wells, and the bottom of the first rainwater pipe (4) and the community rainwater pipe (5) connected to the inspection well (3) are flush.

7. A rainwater storage facility according to claim 1, characterized in that, The bottom of the sedimentation well (6) is provided with a deep mud pit with a diameter of 500mm. The first rainwater pipe (4) is higher than the municipal rainwater pipe (8) into which the community flows. The height difference between the first rainwater pipe (4) and the municipal rainwater pipe (8) into which the community flows meets the requirement of forming a preset storage volume in the rainwater storage tank.

8. A rainwater storage facility according to claim 1, characterized in that, The top of the rainwater storage tank (1) is provided with an inspection port (9), and a fall protection net is provided inside the inspection port (9).

9. A rainwater storage facility according to claim 8, characterized in that, A steel ladder is installed below the fall protection net, and a sedimentation pit (10) is connected to the outside of the rainwater storage tank (1).

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