Outdoor sewage hoisting shaft construction method

Abstract

The invention relates to the field of construction sewage discharge, in particular to a construction method of an outdoor sewage hoisting shaft. Comprising the steps of S1, site investigation and planning; s2, foundation excavation and well body installation; s3, a water pump and a pipeline are installed; s4, mounting an electrical control system and an intelligent sensor; s5, system debugging and testing; s6, environmental protection and safety measures are taken; s7, performing energy-saving and optimization design; and S8, performing remote operation and maintenance and intelligent management. According to the construction method, the sewage lifting well is arranged outdoors, so that occupation of indoor space is avoided, and progress management is facilitated; the construction process is simplified, the construction difficulty is reduced, and meanwhile, the installation and maintenance cost of the deodorization device is also saved; strict environmental protection and safety measures are adopted, and potential threats to public health and environmental safety are effectively avoided; through accurate field investigation and planning and debugging and testing of the system, smooth connection of the sewage lifting well and the municipal pipe network is ensured, and the stability and reliability of the whole sewage lifting system are improved.

Description

Technical Field

[0001] The present invention relates to the field of construction sewage discharge, and specifically to a construction method for outdoor sewage lift wells. Background Art

[0002] In the field of outdoor engineering construction, especially when it comes to the construction of building drainage systems, a common and troublesome problem is that the elevation of the indoor sewage pipe network is lower than that of the municipal pipe network. This situation often occurs in projects with complex terrain, low terrain, or renovation of existing buildings, posing great challenges to sewage discharge. Traditionally, to solve this problem, construction units have to set up concrete sump pits indoors and use submersible sewage pumps to lift sewage from a lower place to a higher place and then discharge it into the municipal pipe network. However, this approach not only increases the construction difficulty and cost but also causes a series of subsequent problems.

[0003] Firstly, setting up a concrete sump pit indoors requires a large amount of space and has a long construction period, which has an adverse impact on the cleanliness and progress management of the construction site. Secondly, since the sump pit is located indoors, in order to prevent harmful gases in the sewage from escaping, a deodorization device must be installed, which not only increases the additional equipment cost but also requires regular maintenance and replacement, further increasing the operation and maintenance cost. In addition, the existence of the sump pit may also become a breeding ground for pathogens such as bacteria and mosquitoes, posing a potential threat to public health and environmental safety. Summary of the Invention

[0004] The present invention aims to solve the above problems and thus provides a construction method for outdoor sewage lift wells that reduces operation and maintenance costs.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows: A construction method for outdoor sewage lift wells includes the following steps: S1: On-site investigation and planning, conduct a detailed investigation of the construction site to determine the relative position, elevation difference, and surrounding environment between the sewage lift well and the end of the municipal pipe network.

[0006] S2: Foundation excavation and well body installation, excavate according to the planned depth, consider the geological conditions, take appropriate support measures, and install prefabricated modular plastic inspection wells.

[0007] S3: Installation of pumps and pipes, install two submersible sewage pumps in the well, equipped with maintenance lifting chains, connect PE pipes to the municipal pipe network, and set up gate valves, check valves, and necessary filters.

[0008] S4: Installation of electrical control systems and intelligent sensors, set up a waterproof and dustproof control box to supply power to the pumps and provide a remote control interface, install electronic detection level gauges and water quality monitoring sensors to achieve real-time monitoring of water level and water quality.

[0009] S5: System commissioning and testing. Conduct a comprehensive commissioning of the entire sewage lift system, including starting and stopping the pumps, opening and closing the valves, and performing simulated drainage tests to verify the lifting capacity and stability of the system under different water levels and flow rates.

[0010] S6: Environmental protection and safety measures. Ensure that the manhole cover is well-sealed, install anti-odor, anti-insect, and rain-proof devices, and set warning signs, guardrails, and necessary lighting facilities around the well.

[0011] S7: Energy conservation and optimized design. Adopt variable frequency technology to adjust the pump speed according to the actual drainage volume, reduce energy consumption, and design a reasonable pipeline layout and slope to reduce water flow resistance and energy consumption.

[0012] S8: Remote operation and maintenance and intelligent management. Establish a cloud operation and maintenance platform, integrate data analysis, fault diagnosis, and remote control functions, and set up a mobile APP or web interface for operation and maintenance personnel to view the system status and alarm information at any time.

[0013] The present invention adopting the above technical solutions, compared with the prior art, has the following prominent features: This construction method sets the sewage lift well outdoors, avoiding the occupation of indoor space, making the construction site cleaner, and also being more conducive to progress management; simplifies the construction process, reduces the construction difficulty, and also saves the installation and maintenance costs of the deodorization device; takes strict environmental protection and safety measures, such as manhole cover sealing, anti-odor, anti-insect, and rain-proof devices, etc., effectively avoiding potential threats to public health and environmental safety; through precise on-site investigation and planning, as well as systematic commissioning and testing, ensures the smooth connection between the sewage lift well and the municipal pipe network, and improves the stability and reliability of the entire sewage lift system.

[0014] As a preference, a further technical solution of the present invention is: Furthermore, in S1, BIM technology is used for 3D modeling and simulation analysis to more accurately determine the relative position and elevation difference between the sewage lift well and the end of the municipal pipe network, and optimize the layout of the surrounding environment to ensure the efficiency and accuracy of construction.

[0015] Furthermore, the support measures in S2 specifically include adopting the methods of steel sheet pile, anchor rod support, or grouting reinforcement according to the geological conditions to ensure the safety during the excavation process and the stability of the well structure; at the same time, the installation of prefabricated modular plastic inspection wells needs to meet relevant standards and has the characteristics of being easy to disassemble, replace, and repair.

[0016] Furthermore, the two submersible sewage pumps in S3 shall have the function of automatic rotation for work, and when one of the sewage pumps fails, the other sewage pump can automatically start as a backup; in addition, the connection of the PE pipeline shall adopt the method of hot melt welding or flange connection to ensure the sealing and stability of the pipeline, and necessary filters shall be set to prevent impurities from entering the water pump.

[0017] Furthermore, the control box in S4 shall have the protection ability with a waterproof and dustproof level not less than IP65, and safety devices for overload protection, short circuit protection and leakage protection shall be provided inside; the electronic detection liquid level gauge and water quality monitoring sensor shall adopt products with high precision and high stability, and be connected to the control box to realize the transmission and processing of real-time data.

[0018] Furthermore, the cloud operation and maintenance platform in S8 shall have the functions of data analysis, fault diagnosis, remote control, alarm notification and historical data query, and be able to support multiple communication protocols for connecting with different types of intelligent devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic flow chart of the construction method in the embodiment of the present invention; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present invention will be further described below in conjunction with embodiments, and the purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0021] A construction method for an outdoor sewage lift well includes the following steps: S1: On-site investigation and planning. Conduct a detailed investigation of the construction site to determine the relative position, elevation difference between the sewage lift well and the end of the municipal pipe network, and the surrounding environment. Use BIM technology for three-dimensional modeling and simulation analysis to more accurately determine the relative position and elevation difference between the sewage lift well and the end of the municipal pipe network, and optimize the layout of the surrounding environment to ensure the efficiency and accuracy of construction.

[0022] S2: Foundation excavation and well body installation. Excavate according to the planned depth, consider the geological conditions, and take appropriate support measures. Install prefabricated modular plastic inspection wells. The support measures specifically include using steel sheet piles, anchor rod support or grouting reinforcement according to the geological conditions to ensure the safety during the excavation process and the stability of the well body structure; at the same time, the installation of the prefabricated modular plastic inspection wells shall comply with relevant standards and have the characteristics of being easy to disassemble, replace and repair. The interface of the prefabricated well body adopts a double-seal design of rubber sealing ring + waterproof glue.

[0023] The well body material shall pass the compressive strength test (such as bearing a static water pressure of ≥0.6 MPa) and the corrosion resistance test (such as no rust after 500 hours of salt spray test).

[0024] ‌S3: Installation of water pump and pipeline‌. Install two submersible sewage pumps in the well, equipped with maintenance lifting chains. Connect the PE pipeline to the municipal pipe network, and set gate valves, check valves and necessary filters. The two submersible sewage pumps shall have the function of automatic rotation work, and when one of the sewage pumps fails, the other sewage pump can automatically start as a backup. In addition, the connection of the PE pipeline shall adopt the method of hot melt welding or flange connection to ensure the sealing and stability of the pipeline. At the same time, necessary filters shall be set to prevent impurities from entering the water pump, and UV-resistant PE pipeline shall be selected, with an outer protective layer (such as aluminum foil).

[0025] ‌S4: Installation of electrical control system and intelligent sensors‌. Set up a waterproof and dustproof control box to supply power to the water pump and provide a remote control interface. Install an electronic detection level gauge and a water quality monitoring sensor to realize real-time monitoring of water level and water quality. The control box shall have a protection ability with a waterproof and dustproof level not less than IP65, and there shall be safety devices for overload protection, short circuit protection and leakage protection inside; the electronic detection level gauge and the water quality monitoring sensor shall adopt products with high precision and high stability, and be connected to the control box to realize real-time data transmission and processing. A temperature and humidity sensor shall be added inside the control box, and the cooling fan shall be automatically started when the temperature exceeds 40°C.

[0026] ‌S5: System commissioning and testing‌. Conduct a comprehensive commissioning of the entire sewage lifting system, including the start and stop of the water pump and the opening and closing of the valve, and conduct a simulated drainage test to verify the lifting capacity and stability of the system under different water levels and flow rates.

[0027] ‌S6: Environmental protection and safety measures‌. Ensure that the well cover is tightly sealed, set up anti-odor, anti-insect and rain-proof devices, and set warning signs, guardrails and necessary lighting facilities around the well.

[0028] ‌S7: Energy saving and optimized design‌. Adopt frequency conversion technology to adjust the water pump speed according to the actual drainage volume to reduce energy consumption. Design a reasonable pipeline layout and slope to reduce water flow resistance and energy consumption.

[0029] S8: Remote operation and maintenance and intelligent management‌. Establish a cloud operation and maintenance platform, integrate data analysis, fault diagnosis and remote control functions, and set up a mobile APP or a web interface for operation and maintenance personnel to view the system status and alarm information at any time. The cloud operation and maintenance platform shall have the functions of data analysis, fault diagnosis, remote control, alarm notification and historical data query, and be able to support multiple communication protocols to connect with different types of intelligent devices.

[0030] The advantages of this construction method include the following aspects: Avoid indoor space occupation: Traditional indoor concrete sumps require a large amount of space, while this construction method sets the sewage lift well outdoors, completely avoiding the occupation of indoor space, making the construction site cleaner and more conducive to progress management.

[0031] Reduce construction difficulty and cost: The construction period of indoor sumps is long, and additional deodorization devices and equipment maintenance are required, increasing construction difficulty and cost. However, this construction method simplifies the construction process and reduces construction difficulty through the implementation of an outdoor sewage lift well. At the same time, it also saves the installation and maintenance costs of deodorization devices.

[0032] Improve public health and environmental safety: Indoor sumps are prone to becoming breeding grounds for pathogens such as bacteria and mosquitoes, posing a potential threat to public health and environmental safety. This construction method sets the sewage lift well outdoors and adopts strict environmental protection and safety measures, such as manhole cover sealing, odor prevention, insect prevention, and rain protection devices, effectively avoiding the occurrence of this problem.

[0033] Enhance system stability and reliability: This construction method ensures the smooth connection between the sewage lift well and the municipal pipe network through precise on-site investigation and planning, as well as systematic commissioning and testing, improving the stability and reliability of the entire sewage lift system. At the same time, two submersible sewage pumps are used to rotate and work alternately, serving as backups for each other, further enhancing the reliability of the system.

[0034] Achieve intelligent management and remote operation and maintenance: This construction method integrates an electrical control system and intelligent sensors to achieve real-time monitoring of water level and water quality, as well as remote control of the water pump. By establishing a cloud operation and maintenance platform, operation and maintenance personnel can view the system status and alarm information at any time, conduct data analysis, fault diagnosis, and remote control, greatly improving the operation and maintenance efficiency and response speed. The average annual maintenance cost of indoor sumps is about 50,000 yuan (including the replacement of deodorization equipment), while the cost of outdoor lift wells can be reduced to less than 20,000 yuan through intelligent operation and maintenance.

[0035] Energy conservation and optimized design: This construction method adopts frequency conversion technology to adjust the pump speed according to the actual drainage volume, reducing energy consumption. At the same time, a reasonable pipeline layout and slope are designed to reduce water flow resistance and energy consumption, achieving the goals of energy conservation and optimized design. The above are only the preferred and feasible embodiments of the present invention, and do not limit the scope of rights of the present invention. Any equivalent changes made by using the content of the specification and drawings of the present invention are included within the scope of rights of the present invention.

Claims

1. A method for constructing an outdoor sewage lifting well, characterized in that: The steps include: S1: On-site investigation and planning: Conduct a detailed investigation of the construction site to determine the relative position, elevation difference and surrounding environment between the sewage lifting well and the end of the municipal pipe network; ‌S2: Foundation excavation and well installation‌: excavate according to the planned depth, consider geological conditions, take appropriate support measures, and install prefabricated modular plastic inspection wells; ‌S3: Water pump and pipeline installation‌, install two submersible sewage pumps in the well, match them with maintenance lifting chains, connect PE pipelines to the municipal pipeline network, and install gate valves, check valves and necessary filters; ‌S4: Installation of electrical control system and intelligent sensor‌, setting up a waterproof and dustproof control box, powering the water pump and providing a remote control interface, installing an electronic detection level gauge and water quality monitoring sensor to achieve real-time monitoring of water level and water quality; ‌S5: System debugging and testing‌, comprehensive debugging of the entire sewage lifting system, including water pump start and stop, valve switch, simulated drainage test, to verify the lifting capacity and stability of the system under different water levels and flow rates; ‌S6: Environmental protection and safety measures‌: ensure that the manhole cover is well sealed, install anti-odor, anti-insect and rain-proof devices, and set up warning signs, guardrails and necessary lighting facilities around the well; ‌S7: Energy saving and optimized design‌, using frequency conversion technology to adjust the pump speed according to the actual drainage volume, reduce energy consumption, design a reasonable pipeline layout and slope, and reduce water flow resistance and energy consumption; S8: Remote operation and maintenance and intelligent management, establish a cloud operation and maintenance platform, integrate data analysis, fault diagnosis, and remote control functions, set up a mobile APP or web interface, so that operation and maintenance personnel can check the system status and alarm information at any time.

2. The outdoor sewage lifting well construction method according to claim 1 is characterized in that: In S1, BIM technology is used for three-dimensional modeling and simulation analysis to more accurately determine the relative position and elevation difference between the sewage lift shaft and the end of the municipal pipe network, and optimize the layout of the surrounding environment to ensure efficient and accurate construction.

3. The outdoor sewage lifting well construction method according to claim 1 is characterized in that: The support measures in S2 specifically include the use of steel sheet piles, anchor support or grouting reinforcement according to geological conditions to ensure safety during excavation and the stability of the well structure; at the same time, the installation of prefabricated modular plastic inspection wells must comply with relevant standards and have the characteristics of easy disassembly, replacement and maintenance.

4. The outdoor sewage lifting well construction method according to claim 1 is characterized in that: The two submersible sewage pumps in S3 must have the function of automatic rotation of work, and when one of the sewage pumps fails, the other sewage pump can be automatically started as a backup; in addition, the connection of PE pipes must be carried out by hot-melt welding or flange connection to ensure the sealing and stability of the pipes, and necessary filters must be set to prevent impurities from entering the water pump.

5. The outdoor sewage lifting well construction method according to claim 1 is characterized in that: The control box in S4 must have a waterproof and dustproof protection level of no less than IP65, and must be equipped with overload protection, short circuit protection and leakage protection safety devices; the electronic detection level gauge and water quality monitoring sensor must use high-precision and high-stability products and be connected to the control box to achieve real-time data transmission and processing.

6. The outdoor sewage lifting well construction method according to claim 1 is characterized in that: The cloud operation and maintenance platform in S8 must have the functions of data analysis, fault diagnosis, remote control, alarm notification and historical data query, and be able to support multiple communication protocols in order to connect with different types of smart devices.

Images