CN103243800A

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

Info

Publication number: CN103243800A
Application number: CN2013101786553A
Authority: CN
Inventors: 温少雄; 杜长劼; 王协康; 李强; 陈勇; 王智琦; 冷月; 吴倩红
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2013-08-14

Abstract

A bidirectional non-electric automatic drainage system for high-rise buildings and underground garages aims at solving the problem of drainage of underground garages and other underground spaces in heavy rain days and pumps and drains water in a non-electric mode. The bidirectional non-electric automatic drainage system pumps ponding of the underground garages through conversion by utilizing the gravitational potential energy of ponding at roofs of buildings in rainy days, replaces a traditional water pumping electric device and effectively solves the problem of drainage of the underground garages in rainy days. The whole system is energy-saving, environment-friendly, clean and safe, is based on the drainage theory, rainy day water catchment conditions and theoretical efficiency calculation, can replace matched underground garage electric drainage devices of buildings of general urban communities, and is low in energy consumption during work, high in water pumping efficiency and environmentally friendly.

Description

The two-way non-electricity automatic drain system of highrise building and underground garage

Technical field

At the draining of heavy rain weather underground garage and the drainage problem of other underground spaces, the pump drainage hydrolysis that the has proposed non-electricity scheme of determining.

Background technology

Continually developing and utilizing along with the underground space, its drainage problem highlights day by day, be example with the underground garage, tradition pump drainage water mainly is the electric power pump drainage, the two-way automatic negative-pressure water plug of roof and underground garage is at the impeded drainage of underground garage and the drainage problem of other underground spaces, the pump drainage hydrolysis of the non-electricity of the proposition scheme of determining.

The waterproof of underground garage and the technology that drainage system is mainly used have at present: play that the sloping dash of locating and power consumption water pump draw water etc., but in fact whenever running into continuous heavy showers weather, existing garage drainage system drainability is limited, garage ponding can not in time be discharged and very serious seepage even garage be taken place by the problem of flooding, and causes a series of problems; Simultaneously a lot of dewatering installations all utilize electric energy, and power consumption is serious; And under the situation that extreme cases such as rainstorm weather have a power failure, conventional electric power drainage plant lost efficacy, and caused irreversible loss, therefore, improved fully to be necessary at the deficiency of present underground garage drainage system.

(1) these works are turned waste into wealth owing to adopted clean energy resource, and the electric device of the exhaust that replaced drawing water with the problem combination of roof draining and underground garage draining, reaches maximization with benefit effectively.

(2) whole system is simple and convenient, and is durable in use, and cost is low, and very big economic benefit is arranged, and meets the theory of sustainable development, really accomplished energy-conservation, environmental protection, the cleaning, safety.

(3) calculate based on its drainage principle, rainy day charge for remittance situation and theoretical efficiency, native system can substitute the supporting underground garage electric power dewatering installation of highrise building of general urban cells.

(4) this system energy consumption is low, and only the weak electricity system integrated circuit need consume micro-electric energy, and green low-carbon is environmentally friendly equipment.

Summary of the invention: the two-way non-electricity automatic drain system of roof and underground garage.

(1) detection scheme of water speed control system processed

Settle a water level detection gauge in the collection chamber in garage, monitoring collection chamber water level is passed to single-chip microcomputer with signal;

An adjustable control valve is placed at straight-through gutter place on the roof, comes the open degree of by-pass valve control by the single-chip microcomputer output signal, thereby controls the speed of letting out under the roof ponding.

(2) the control scheme of water speed control system processed

When the water level that detects reaches the certain altitude (be made as at the beginning of this device collection chamber 1/2nd) of underground garage collection chamber, water level detection gauge sends to single-chip microcomputer with signal, single-chip microcomputer is exported corresponding ceiling voltage makes valve opening degree reach maximum, the water velocity maximum.

When water level when minimum (this device just be made as collection chamber 1/5th), water level detection gauge sends to single-chip microcomputer with signal, single-chip microcomputer is exported corresponding minimum voltage and is made valve closing, drawing water stops.

Between water level maximum, minimum value, set corresponding limit value successively, when reaching a certain limit value, water level just signal is sent to single-chip microcomputer, and single-chip microcomputer is exported corresponding voltage and is come the by-pass valve control open degree, the control water velocity.

(3) negative pressure pumping system operating principle

When high-rise building roof ponding, the potential energy that utilizes ponding to have, dirty along vertical leader freedom, to produce high speed pressure water stream, the current negative pressure of special construction and the size chamber of drawing water of flowing through, high-velocity flow will produce power vacuum, negative pressure is drawn water and is formed negative pressure in the chamber, according to the hydraulics Bernoulli equation as can be known negative pressure increase along with the increase of flow rate of water flow, at the negative pressure maximum, i.e. the minimum place of section, be connected with the collection chamber of underground garage with suction water pipe, by suction function garage ponding is promoted to negative pressure chamber, is discharged into ground again, reach the effect of drawing water.

Fig. 1 explanation:

Roof (1)

Underground garage (2)

Ground (3)

Water pump (4)

The negative pressure chamber (5) of drawing water

Autocontrol valve (6)

Water-level instrumentation (7)

Bleed off pipe (8).

Embodiment

(1) under the rainy day situation, roof is collected rainwater, underground garage begins charge for remittance simultaneously, when detecting underground garage ponding, water level detection gauge reaches a certain early warning value (this example is set to 10 centimetres), this signal can be transferred to the automatic valve of roof water outlet place, valve open, make under the roof ponding and let out, (simulating story height in this example is under 2.75 meters the situation to produce high-velocity flow, water speed is determined as 5.3 metre per second (m/s)s before the negative pressure chamber), produce pressure differential (it is 1.9 meters that this example records vacuum) through the negative pressure chamber of drawing water, underground garage (this example is set to underground 0.5 meter) ponding is drawn into the face of land.

(2) by detecting the data of underground garage water level and roof ponding, through drawing corresponding roof valve opening degree after the single-chip microcomputer analysis, make current have specific velocity flow to hydrodynamic force negative pressure water plug, to reach the balance of underground garage charge for remittance and draining.

(3) guarantee underground garage and resident's the person and property safety by above-mentioned steps.

Claims

1. a highrise building and the two-way non-electricity automatic drain system of underground garage, include roof (1), underground garage (2), ground (3), water pump (4), the negative pressure chamber (5) of drawing water, autocontrol valve (6), water-level instrumentation (7), bleed off pipe (8), water-level instrumentation is given autocontrol valve (6) with the SEA LEVEL VARIATION feedback information of underground garage, the control valve open degree, make roof (1) ponding flow into the negative pressure chamber (5) of drawing water downwards by pipeline, produce negative pressure underground garage (2) ponding is extracted into negative pressure draw water chamber (5), inflow surface (3) then.

2. the energy that draws water according to claim 1 utilizes the energy of rainwater, it is characterized in that, derives from the gravitional force of roof ponding.

3. the mode of drawing water according to claim 1 is the negative pressure formula of drawing water, and the size of vacuum has determined pumpage.

4. the negative pressure according to claim 1 chamber of drawing water is characterized in that, has passed through contraction and the expansion of pipeline, 2.5 centimetres pipelines are contracted to 1.3 centimetres, and then be extended to 2.5, and 15 centimetres of this contraction section length overalls, the coboundary of suction water pipe is arranged on the minimum cross section of pipeline.

5. autocontrol valve according to claim 1 is characterized in that, the water level information of underground garage is fed back to its open degree of automatic control valve gate control.

6. the principle of drawing water according to claim 1, this device can be applicable to the underground garage draining, wear that tunnel drainage, urban construction construction groundwater mining, sub-terrain mines hole ponding extract, the aspects such as underdrainage when the highway bridge construction ground is handled down.