CN103243800A - Bidirectional non-electric automatic drainage system for high-rise buildings and underground garages - Google Patents

Abstract

The two-way non-electric automatic drainage system for high-rise buildings and underground garages is a non-electric pumping and drainage solution for the drainage of underground garages and other underground spaces in heavy rain. This system uses the gravitational potential energy of the water accumulated on the roof of the building in rainy days, and replaces the traditional electric device for pumping water by transforming the accumulated water used to pump the underground garage, effectively solving the drainage problem of the underground garage in rainy days. The whole system is energy-saving, environmentally friendly, clean and Safe, based on its drainage principle, rainy day catchment conditions and theoretical efficiency calculations, this system can replace the underground garage electric drainage device for buildings in general urban communities, and it has low energy consumption and high pumping efficiency, making it an environmentally friendly device.

Description

Two-way non-electric automatic drainage system for high-rise buildings and underground garages

the

technical field

Aiming at the drainage of the underground garage in heavy rain and the drainage of other underground spaces, a non-electrical pumping and drainage solution is proposed.

Background technique

With the continuous development and utilization of underground space, its drainage problem has become increasingly prominent. Taking the underground garage as an example, the traditional pumping and drainage is mainly electric pumping and drainage. The two-way automatic negative pressure pumping device between the roof and the underground garage is aimed at the poor drainage of the underground garage. As well as the drainage problems of other underground spaces, a non-electric pumping and drainage solution is proposed.

At present, the main technologies used in the waterproof and drainage system of the underground garage are: water retaining at the start of the slope and power-consuming water pumping, etc., but in fact, whenever there is continuous heavy rainfall, the drainage capacity of the existing garage drainage system is limited. The stagnant water cannot be discharged in time, resulting in serious leakage and even the flooding of the garage, causing a series of problems; at the same time, many drainage devices use electric energy, which consumes a lot of energy; and in the case of power outages in extreme cases such as heavy rain, traditional electric drainage The failure of the equipment will cause irreversible losses. Therefore, it is absolutely necessary to improve the current drainage system of the underground garage.

(1) Due to the use of clean energy, this work turns waste into treasure, replaces the electric device for pumping and exhausting water, effectively combines the problems of roof drainage and underground garage drainage, and maximizes benefits.

(2) The whole system is simple and convenient, durable, low cost, has great economic benefits, and conforms to the concept of sustainable development, and truly achieves energy saving, environmental protection, cleanliness and safety.

(3) Based on its drainage principle, catchment conditions in rainy days and theoretical efficiency calculations, this system can replace the electric drainage devices in underground garages for high-rise buildings in general urban communities.

(4) The system has low energy consumption, and only a small amount of power is consumed by the integrated circuit of the weak current system. It is green and low-carbon, and is an environmentally friendly device.

the

Summary of the invention: Two-way non-electric automatic drainage system between the roof and the underground garage.

(1) Detection scheme of water speed control system

Install a water level detector in the sump of the garage to monitor the water level of the sump and send the signal to the microcontroller;

An adjustable control valve is placed at the direct drainage pipe on the roof, and the opening degree of the valve is controlled by the output signal of the single-chip microcomputer, thereby controlling the speed of the drainage of the accumulated water on the roof.

(2) Control scheme of water speed control system

When the detected water level reaches a certain height of the pool in the underground garage (this device is initially set to one-half of the pool), the water level detector sends a signal to the single-chip microcomputer, and the single-chip microcomputer outputs the corresponding highest voltage to maximize the opening of the valve. Maximum water velocity.

When the water level is at the lowest value (this device is initially set to one-fifth of the catchment pool), the water level detector sends a signal to the single-chip microcomputer, and the single-chip microcomputer outputs the corresponding minimum voltage to close the valve and stop pumping.

Between the maximum and minimum water level, set the corresponding limit in turn. When the water level reaches a certain limit, the signal will be sent to the single-chip microcomputer, and the single-chip microcomputer will output the corresponding voltage to control the opening degree of the valve and the water flow speed.

(3) Working principle of negative pressure pumping system

When water accumulates on the roof of a high-rise building, the potential energy of the accumulated water is used to freely flow down the vertical downpipe to generate a high-speed pressurized water flow. The water flow passes through a negative pressure pumping chamber with a special structure and size, and the high-speed water flow will generate power. Vacuum, negative pressure is formed in the negative pressure pumping chamber. According to the hydraulic Bernoulli equation, it can be known that the negative pressure increases with the increase of the water flow velocity. At the maximum negative pressure, that is, the minimum section, the suction pipe and the underground garage The pools are connected to each other, and the accumulated water in the garage is lifted to the negative pressure chamber through negative pressure, and then discharged to the ground to achieve the pumping effect.

the

Description of Figure 1:

Roof (1)

  Underground Garage (2)

ground (3)

Water pump (4)

  Negative pressure pumping chamber (5)

  Automatic control valves (6)

  Water Level Monitor (7)

overflow pipe (8).

the

Example

(1) In rainy days, the roof collects rainwater, and at the same time the underground garage starts to collect water. When the water level detector detects that the water in the underground garage reaches a certain warning value (in this example, it is set to 10 cm), the signal will be transmitted to The automatic valve at the water outlet on the roof, the valve is opened, so that the accumulated water on the roof is released to generate high-speed water flow (in the case of the simulation floor height of 2.75 meters in this example, the measured water velocity in front of the negative pressure chamber is 5.3 meters per second), after The negative pressure pumping chamber generates a pressure difference (in this example, the measured vacuum degree is 1.9 meters), and pumps the water accumulated in the underground garage (in this example, it is set to 0.5 meters underground) to the surface.

(2) By detecting the data of the water level of the underground garage and the water accumulated on the roof, the opening degree of the valve on the roof is obtained after analysis by the single-chip microcomputer, so that the water flows to the hydrodynamic negative pressure pumping device at a specific speed, so as to achieve the water collection of the underground garage Balance with drainage.

(3) Ensure the personal and property safety of the underground garage and residents through the above steps.

Claims (6)

1. A two-way non-electric automatic drainage system for high-rise buildings and underground garages, including roof (1), underground garage (2), ground (3), water pump (4), negative pressure pumping room (5), automatic control Valve (6), water level monitor (7), overflow pipe (8), the water level monitor feeds back the water level change information of the underground garage to the automatic control valve (6), and adjusts the opening of the valve so that the roof (1) accumulates The water flows downwards into the negative pressure pumping chamber (5) through the pipeline, generating negative pressure to pump the accumulated water in the underground garage (2) into the negative pressure pumping chamber (5), and then flows into the ground (3). 2. The energy of pumping water according to claim 1 utilizes the energy of rainwater, and is characterized in that, it is derived from the gravitational potential energy of the accumulated water on the roof. 3. The pumping method according to claim 1 is a negative pressure pumping type, and the degree of vacuum determines the pumping capacity. 4. The negative pressure pumping chamber according to claim 1, characterized in that, through shrinkage and expansion of the pipeline, the 2.5 cm pipeline is shrunk to 1.3 centimeters, and then expanded to 2.5 centimeters, the total length of the shrinkage section is 15 centimeters, water absorption The upper boundary of the pipe is set at the minimum section of the pipe. 5. The automatic control valve according to claim 1, characterized in that the water level information of the underground garage is fed back to the automatic control valve to control its opening degree. 6. According to the principle of pumping water according to claim 1, the device can be applied in drainage of underground garages, drainage of underground tunnels, extraction of underground water in municipal construction, extraction of accumulated water in underground mines, underground drainage during foundation treatment of road and bridge construction, etc. .

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