Effective drainage method and system for flow division well

Abstract

The invention discloses an effective drainage method for a flow division well. The method comprises the steps that a first alarm liquid level H0 in the flow division well is set, the liquid level H inthe flow division well is continuously collected, and on sunny days, a first pneumatic flow cutting device conducts air inflation, and a first water outlet pipe is closed; after rainy days, when dirty rainwater is divided, H is smaller than H0, the first water outlet pipe keeps closed, when H is larger than or equal to H0, the first pneumatic flow cutting device is controlled to start air discharging, and as time lapses, the aperture of the first water outlet pipe is gradually increased; before the first water outlet pipe is completely opened, if the liquid level in the flow division well descends until H is smaller than H0, the first pneumatic flow cutting device is controlled to stop air discharging, the first water outlet pipe keeps the current aperture, when the clean rainwater afterflow division enters natural water or a rainwater pipe, the first pneumatic flow cutting device conducts air discharging, and the first water outlet pipe is completely opened.

Description

technical field [0001] The invention relates to the drainage field, in particular to an effective drainage method and a drainage system for a diversion well. Background technique [0002] At present, in the diversion well, abandonment well and interception well system, the system is composed of water inlet pipe, outlet pipe and sewage intercepting pipe, which divert the domestic sewage or dirty rainwater and later rainwater in the drainage pipe, among which domestic sewage Or the dirty rainwater is intercepted to the sewage pipe and then transported to the sewage treatment plant for treatment and discharged after reaching the standard (further, the dirty rainwater can be stored or intercepted to the sewage treatment plant for treatment and discharged after reaching the standard), and the clean rainwater is directly discharged to the natural environment. in a body of water. [0003] The devices for diverting or intercepting flow all use gates or weir gates to switch the corr...

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Problems solved by technology

However, in reality, electric control has the following problems: 1. Generally, flammable and explosive biogas will be produced in closed pipelines and sewage environments. General electric control devices are prone to explosion and unsafe. Therefore, when using electric control devices It is required that the electronic control part in contact with the biogas must have an explosion-proof function, so the price of the electronic control system is relatively expensive and the cost is high; 2. In the severe environment of stormy weather, power failure will occur, and the power will be diverted after power failure The equipment in the diversion well, abandonment well or interception well cannot work normally, resulting in urban waterlogging and other situations; 3. In rainy weather, the flooding of diversion wells, abandonment wells and interception wells ranges from several hours to several days In this way, the use of an electronic control device that is completely suitable for underwater use will be too redundant and cost too high, and the commonly used IP68-level electronic control device can be submerged within a few hours, and there are also situations where the capacity is insufficient; 4. The devices of the electric control system use unsafe voltage, and the high voltage is unsafe and prone to accidents; 5. After the electrical equipment is flooded, it is easy to leak electricity and there is a risk of electric shock; 6. When the electric control equipment (gates, weirs) are running It needs an upward or downward journey, which exposes the urban ground, which affects the urban landscape and traffic, and the excavation area is large during construction; 7. The electric control system uses 380V three-phase electricity, and the municipal power grid cannot supply power, so there is a problem of power supply difficulty question

[0004] In particular, for the occasions requiring concealed installation, and the power supply and costs of the electronic control system are not easy to solve

There are also certain problems in hydraulic control: the hydraulic station uses high-pressure oil pipes, and the cost of the hydraulic station and high-pressure oil pipes is relatively high; the rupture of high-pressure oil pipes will pollute the environment; after the electrical equipment is flooded, it is easy to leak electricity and there is a risk of electric shock; Gates, weir gates) require upward or downward strokes during operation, exposing the urban ground, affecting the urban landscape and traffic, and the excavation area is large during construction

[0005] In addition to the above-mentioned problems in the existing interception wells, diversion wells or abandonment wells, when urban waterlogging occurs, the channel to enter the natural water body or rainwater pipes will be quickly opened. At this time, there will be more dirty rainwater in the well. Will quickly pour into natural water bodies, causing serious environmental pollution

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