CN103452096B - Low-vacuum generation device of single pump for water discharging of sludge and using method of low-vacuum generation device - Google Patents
Low-vacuum generation device of single pump for water discharging of sludge and using method of low-vacuum generation device Download PDFInfo
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- CN103452096B CN103452096B CN201310361409.1A CN201310361409A CN103452096B CN 103452096 B CN103452096 B CN 103452096B CN 201310361409 A CN201310361409 A CN 201310361409A CN 103452096 B CN103452096 B CN 103452096B
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Abstract
The invention provides a low-vacuum generation device of single pump for vacuum water discharging in a soft clay foundation or a soft soil foundation and a using method of the low-vacuum generation device. The low-vacuum generation device mainly comprises a vacuum pump and a vacuum tank. The starting and the stopping are controlled by electric contact vacuum meters, and the vacuum degree provided by the vacuum providing device is stabilized on a certain preset value by adjusting lower-limit vacuum pressure control parameters of the electric contact vacuum meters. The low-vacuum providing device is especially provided with an air-leakage protection electromagnetic switch, and the vacuum pump is connected with the vacuum tank by a pipeline. The whole structure of the frequency-conversion control adjustable vacuum device comprises five parts: (1) the vacuum pump; (2) the electric contact vacuum meters controlled by the vacuum pump; (3) the vacuum tank; (4) the electric contact vacuum meter controlled by the air-leakage protection electromagnetic valve; (5) the air-leakage protection electromagnetic valve. The low-vacuum generation device and the using method provided by the invention have the advantages that the modular design is adopted, so that the vacuum degree can be randomly set in the range from minus 0kPa to minus 100kPa; in use, the equipment is simple in installation, and simple and convenient in operation, saves electric energy and is high in efficiency.
Description
Technical field
The present invention relates to a kind of single pump low vacuum generating means for using during vacuum drainage in Soft Clay Foundation or soft foundation and using method thereof, be directed to silt stockyard and blast-filled ground especially under vacuum drainage condition, the situation that water discharging body is easily deposited by mud and the anti-alluvial low vacuum generator designed and method of operating thereof, belong to the correlative technology field such as geotechnical engineering and Environmental Engineering.
Background technology
In training of river channel desilting engineering and reclaim land from the sea in engineering, the hydraulic reclamation solidification problem of the high-moisture percentage soil body all can be run into.The place of high-moisture percentage mud for hydraulic reclamation, if the impeded drainage in place or hydraulic reclamation soil body clay content is higher, then consolidation settlement will be a very long process.In the middle of the process that this is very long, through surface evaporation of exposing to the weather for a long time, the thicker crust layer of one deck can be formed on hydraulic reclamation soil layer surface, be mingled with herbal rhizome residue, topsoil is made to have certain apparent intensity, but most of engineering monitoring result shows, at certain depth place, underground, the soil body still remains very high moisture content, or even a kind of semifluid form close to original state; Although the top layer soil body has certain intensity and can pedestrian, some small-sized boring mechanics are all difficult to enter place, more need not carry big machinery.The project of further engineering and the expropriation of land engineering of second ploughing are as early as possible carried out for land used of being eager, how to reduce the moisture content of high-moisture percentage mud in stockyard rapidly, improve the degree of consolidation, increasing bearing capacity is crucial problem, therefore needs to adopt artificial means to accelerate drainage procedure.In existing drainage measure, with vacuum draw water most effective, but carrying out vacuum in rare soft high-moisture percentage silt stockyard draws water after a period of time, the surrounding of water discharging body there will be a thick layer of parcel mud layer, hinders the contact of water discharging body and outside mud, reduces the speed of draining, research shows, adopt the method for-30 ~-80kPa low vacuum draining, avoid using the high vacuum of close-100kPa to carry out draining, better can avoid the generation of water discharging body silting.Therefore be badly in need of developing a kind of low vacuum generator used during vacuum drainage in mud place or blast-filled ground, and required low vacuum pressure can be set arbitrarily according to construction requirement, to solve problem actual in engineering.
Summary of the invention
The object of the invention is to propose a kind of single pump low vacuum generating means for using during vacuum drainage in Soft Clay Foundation or soft foundation and using method thereof, required low vacuum pressure can be set arbitrarily according to construction requirement, prevent mud water discharging body generation silting phenomenon, solve the silting and inefficiency problem that easily occur time drawing water in conventional vacuum source in silt stockyard.It is silt stockyard and mud blast-filled ground that the present invention is mainly suitable for geology place, has rare soft mud, and have certain mobility under it.Also can be applicable to place vacuum size being had to control overflow simultaneously.
Solution of the present invention
The present invention proposes a kind of single pump low vacuum generating means for mud draining; its overall structure comprises: 1) vacuum pump, 2) vacuum pump control electric contact vacuum meter, 3) vacuum tank; 4) wheel leakage protective solenoid control electric contact vacuum meter, 5) wheel leakage protective electromagnetic valve.
Wherein 1) vacuum pump is operative body of bleeding, the initial stage run, bleed rapidly, the vacuum in vacuum tank is made to approach preset value fast, out of service after reaching preset value, the power supply two-phase of vacuum pump is electrically connected with the lower limit end zero line of power firestreak and electric contact vacuum meter respectively, another phase ground connection;
Wherein 2) vacuum pump controls electric contact vacuum meter and controls vacuum pump and start and stop, and its bus is electrically connected with zero-power line, and lower limit end is electrically connected with vacuum pump zero line, and is communicated with vacuum tank by vacuum pipe;
Wherein 3) vacuum tank is sealed shell of tank, be connected with vacuum pump by vacuum pipe, and be connected to vacuum pump control electric contact vacuum meter and wheel leakage protective solenoid control electric contact vacuum meter, vacuum tank is connected with air by wheel leakage protective electromagnetic valve, and leaves vacuum and provide interface to provide negative pressure of vacuum to external world;
Wherein 4) wheel leakage protective solenoid control electric contact vacuum meter controls the keying of the wheel leakage protective electromagnetic valve on vacuum tank, when vacuum in vacuum tank exceedes a certain setting limit value, control wheel leakage protective electromagnetic valve to open, release negative pressure of vacuum, close wheel leakage protective electromagnetic valve lower than during setting limit value, its bus is electrically connected with power of electromagnetic valve zero line, and upper limit end is electrically connected with wheel leakage protective electromagnetic valve zero line, lower limit is vacant, and is communicated with vacuum tank by vacuum pipe;
Wherein 5) connectedness of wheel leakage protective solenoid control vacuum tank and air; when vacuum in vacuum tank exceedes a certain setting limit value; wheel leakage protective electromagnetic valve is opened; release negative pressure of vacuum; lower than wheel leakage protective closed electromagnetic valve during setting limit value; wheel leakage protective electromagnetic valve zero line is electrically connected with wheel leakage protective solenoid control electric contact vacuum meter upper limit end, and wheel leakage protective electromagnetic valve live wire is electrically connected with power of electromagnetic valve live wire.
A kind of using method of the single pump low vacuum generating means for mud draining foregoing:
1), interface the vacuum on vacuum tank is provided to connect with extraneous demand equipment;
2) the lower limit pointer, vacuum pump being controlled electric contact vacuum meter is adjusted to target vacuum;
3), wheel leakage protective solenoid control electric contact vacuum meter upper limit pointer is adjusted to a certain limit value of more than target vacuum;
4), wheel leakage protective power of electromagnetic valve is connected;
5), connect vacuum-pump power supply, start to bleed;
6), the reading of 2 electric contact vacuum meters on Real-Time Monitoring vacuum tank, fine adjustment vacuum pump controls the lower limit pointer of electric contact vacuum meter, ensures that the negative pressure of vacuum in vacuum tank reaches predetermined value.
Advantage of the present invention
The present invention propose for single pump low vacuum generating means of using during vacuum drainage in Soft Clay Foundation or soft foundation and using method thereof, the vacuum pressure of the different sizes that construction can be provided to need, according to the difference of construction parameter, arrange required target vacuum, when overcoming mud vacuum drainage under rough vacuum condition, water discharging body is easy to be deposited the shortcoming causing drainage efficiency to reduce by mud layer; This apparatus structure adopts modularized design, can keep in repair by installing/dismounting easily, run and use efficient energy-saving, lightweight, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is list pump low vacuum generating means of the present invention
In figure: 1 vacuum pump, 2 vacuum pumps control electric contact vacuum meter, and 3 vacuum tanks, 4 wheel leakage protective solenoid control electric contact vacuum meters, 5 wheel leakage protective electromagnetic valves, 6 vacuum provide interface.
Detailed description of the invention:
For a single pump low vacuum generating means for mud draining, its overall structure comprises: vacuum pump 1, vacuum pump control electric contact vacuum meter 2, vacuum tank 3, wheel leakage protective solenoid control electric contact vacuum meter 4, wheel leakage protective electromagnetic valve 5.
The power supply two-phase of vacuum pump 1 is electrically connected with the lower limit end zero line of power firestreak and electric contact vacuum meter 2 respectively, another phase ground connection;
The bus that vacuum pump controls electric contact vacuum meter 2 is electrically connected with zero-power line, and lower limit end is electrically connected with vacuum pump 1 zero line, and is communicated with vacuum tank 3 by vacuum pipe;
Vacuum tank 3 is sealed shell of tank, be connected with vacuum pump 1 by vacuum pipe, and be connected to vacuum pump control electric contact vacuum meter 2 and wheel leakage protective solenoid control electric contact vacuum meter 4, vacuum tank is connected with air by wheel leakage protective electromagnetic valve 5, and leaves vacuum and provide interface 6 to provide negative pressure of vacuum to external world;
The bus of wheel leakage protective solenoid control electric contact vacuum meter 4 is electrically connected with power of electromagnetic valve zero line, and upper limit end is electrically connected with wheel leakage protective electromagnetic valve 5 zero line, and lower limit is vacant, and is communicated with vacuum tank 3 by vacuum pipe;
Wheel leakage protective electromagnetic valve 5 zero line is electrically connected with wheel leakage protective solenoid control electric contact vacuum meter 4 upper limit end, and wheel leakage protective electromagnetic valve 5 live wire is electrically connected with power of electromagnetic valve live wire.
Concrete using method:
1, interface 6 vacuum on vacuum tank 3 is provided to connect with extraneous demand equipment;
2, lower limit pointer vacuum pump being controlled electric contact vacuum meter 2 is adjusted to target vacuum;
3, wheel leakage protective solenoid control electric contact vacuum meter 4 upper limit pointer is adjusted to a certain limit value of more than target vacuum;
4, wheel leakage protective electromagnetic valve 5 power supply is connected;
5, connect vacuum pump 1 power supply, start to bleed;
6, the reading of 2 electric contact vacuum meters on Real-Time Monitoring vacuum tank 3, fine adjustment vacuum pump controls the lower limit pointer of electric contact vacuum meter 2, ensures that the negative pressure of vacuum in vacuum tank 3 reaches predetermined value.
Claims (2)
1. for a single pump low vacuum generating means for mud draining, comprise: vacuum pump, vacuum pump control electric contact vacuum meter, vacuum tank, wheel leakage protective solenoid control electric contact vacuum meter, wheel leakage protective electromagnetic valve, it is characterized in that:
The power supply two-phase of described vacuum pump is electrically connected with the lower limit end zero line of power firestreak and electric contact vacuum meter respectively, another phase ground connection;
The bus that described vacuum pump controls electric contact vacuum meter is electrically connected with zero-power line, and lower limit end is electrically connected with vacuum pump zero line, and is communicated with vacuum tank by vacuum pipe;
Described vacuum tank is sealed shell of tank, be connected with vacuum pump by vacuum pipe, and be connected to vacuum pump control electric contact vacuum meter and wheel leakage protective solenoid control electric contact vacuum meter, vacuum tank is connected with air by wheel leakage protective electromagnetic valve, and leaves vacuum and provide interface to provide negative pressure of vacuum to external world;
The bus of described wheel leakage protective solenoid control electric contact vacuum meter is electrically connected with power of electromagnetic valve zero line, and upper limit end is electrically connected with wheel leakage protective electromagnetic valve zero line, and lower limit is vacant, and is communicated with vacuum tank by vacuum pipe;
Described wheel leakage protective electromagnetic valve zero line is electrically connected with wheel leakage protective solenoid control electric contact vacuum meter upper limit end, and wheel leakage protective electromagnetic valve live wire is electrically connected with power of electromagnetic valve live wire.
2. the using method based on the single pump low vacuum generating means for mud draining according to claim 1:
1), interface the vacuum on vacuum tank is provided to connect with extraneous demand equipment;
2) the lower limit pointer, vacuum pump being controlled electric contact vacuum meter is adjusted to target vacuum;
3), wheel leakage protective solenoid control electric contact vacuum meter upper limit pointer is adjusted to a certain limit value of more than target vacuum;
4), wheel leakage protective power of electromagnetic valve is connected;
5), connect vacuum-pump power supply, start to bleed;
6), the reading of 2 electric contact vacuum meters on Real-Time Monitoring vacuum tank, fine adjustment vacuum pump controls the lower limit pointer of electric contact vacuum meter, ensures that the negative pressure of vacuum in vacuum tank reaches predetermined value.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310361409.1A CN103452096B (en) | 2013-08-19 | 2013-08-19 | Low-vacuum generation device of single pump for water discharging of sludge and using method of low-vacuum generation device |
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| CN201310361409.1A CN103452096B (en) | 2013-08-19 | 2013-08-19 | Low-vacuum generation device of single pump for water discharging of sludge and using method of low-vacuum generation device |
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| CN103452096A CN103452096A (en) | 2013-12-18 |
| CN103452096B true CN103452096B (en) | 2015-07-01 |
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| CN105525606B (en) * | 2015-11-25 | 2018-03-23 | 上海交通大学 | A kind of vacuum preloading is evacuated drainage system |
| CN106003450A (en) * | 2016-07-08 | 2016-10-12 | 北京君泰天成科技有限公司 | Automatic vacuum drainage method and device for suction cups |
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| JP2002242170A (en) * | 2001-02-16 | 2002-08-28 | Hazama Gumi Ltd | Foundation improvement work by vacuum consolidation |
| KR200430843Y1 (en) * | 2006-03-21 | 2006-11-13 | 김용수 | The vacuum pumping discharging water device from soft ground |
| CN101338558A (en) * | 2008-08-15 | 2009-01-07 | 陈江涛 | Composite AC electric shock discharging method, device thereof and uses |
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