CN105525606B - A kind of vacuum preloading is evacuated drainage system - Google Patents
A kind of vacuum preloading is evacuated drainage system Download PDFInfo
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- CN105525606B CN105525606B CN201510833670.6A CN201510833670A CN105525606B CN 105525606 B CN105525606 B CN 105525606B CN 201510833670 A CN201510833670 A CN 201510833670A CN 105525606 B CN105525606 B CN 105525606B
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- vacuum
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- drip chamber
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- pressure control
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
Abstract
The present invention provides a kind of vacuum preloading pumping drainage system, in the system：Vacuumizing part is connected to the gas outlet of pressure control room upper end by vacuum line；Multiple drip chambers connect the lower end air inlet of pressure control room by vacuum line；B/P EGR Back Pressure Transducer EGR is installed on pressure control chamber interior walls bottom, and forms real-time negative pressure self-monitoring system by single-chip microcomputer and vacuumizing part connecting communication；Suction pump connects the discharge outlet of drip chamber lower end by vacuum line；Water drainage part is connected to the water inlet of drip chamber lower end by vacuum line；Water level inductive switch is installed on drip chamber upper inside wall, and forms real-time draining self-monitoring system by single-chip microcomputer and suction pump connecting communication.The achievable vacuum preloading drainage procedure of the present invention is automatically-monitored, and a large amount of to reduce vavuum pump dosages, energy consumption is low and energy transformation ratio is high, improves drainage efficiency and operation rate of machinery, can Reusability and cost it is relatively low, reach the safe multi-efficiency of high-efficiency and economic.
Description
Technical field
The present invention relates to a kind of basement process system of energy-conservation, more particularly to a kind of vacuum preloading pumping drainage system.
Background technology
For many coastal areas in the whole nation, land resource it is serious it is in short supply be restrict its economic development it is important because
Element, land reclamation are exactly an important channel for solving shortage of land resource.In dredging and reclamation construction, the moisture content of the soil body is high
The low size for determining hydraulic reclamation area foundation bearing capacity.Early stage, moisture content was very high, and how to reduce hydraulic reclamation soil's water content is hydraulic reclamation area
One key job of base processing.
The main method using vacuum preloading quick-discharging consolidation carries out drainage sunk well for hydraulic fill foundation at present, and tradition is true
Empty preloading method can effectively handle soft foundation, and specific way is the laying horizontal drainage bed course on the ground to need reinforcement
(being usually sand bedding course), sets drainage channel, and plastic seal film is then laid on horizontal drainage bed course and buries its surrounding
At least 50cm below airtight layer top surface, is allowed to isolate with atmospheric pressure, then reduces being reinforced ground using vacuum extractor
Pore water pressure, make effective stress increase in its ground, reinforced the soil body.Existing vacuum preloading drainage generally makes
About 900-1000m is handled with a vavuum pump2Pending area, when vacuum reaches near -90kpa, vavuum pump will locate
In idling conditions, the energy and the significant losses of efficiency are caused.Therefore, it is necessary to develop what a kind of negative pressure of vacuum can monitor, integrate
Vacuum preloading drainage system, to reach the effect of efficient, economic, environmentally friendly.
Through to prior art literature and patent retrieval discovery：
China Patent No.：201220736787.4 patent name is：Vacuum preloading drainage arrangement, the disclosure of the invention one
Kind vacuum preloading drainage arrangement, including the drainage blanket being arranged on ground, vacuumize element and are embedded in the draining pad
Soft tube in layer, the soft tube docks with the element that vacuumizes, wherein the soft tube being embedded in drainage blanket is soft
Property material, can enable whole pipe-line system well adapt to the differential settlement on ground.But it is mainly disadvantageous in that：
1) horizontal drain pipe in traditional vacuum preloading drainage blanket is only replaced with into flexible pipe, does not solve drainage efficiency from root
The problem of low；2) the processing method energy consumption is larger.
China Patent No.：201420148504.3 patent name is：A kind of soft base vacuum preloading processing drainage by suction dress
Put, the utility model discloses a kind of soft base vacuum preloading processing negative-pressure drainage device.Its core is to set steam-water separation to fill
Put, the vacuum suction pipe being connected with vavuum pump is provided with the top of steam-water separation tank, magnetic valve is housed on vacuum suction pipe；In vapour
The water-permeable pipe being embedded in soft base is connected with the side wall of water separation tank, the bottom in steam-water separation tank is provided with support orifice plate, branch
It is arranged to inhale sand chamber between support orifice plate and the bottom of steam-water separation tank, inhales in sand chamber and be provided with suction cutter, steam-water separation tank is externally provided with
Jet vacuum pump, jet vacuum pump are connected by sand suction pipe with suction cutter；Two draining pumps in parallel are housed on support orifice plate,
The upper portion side wall of steam-water separation tank is provided with discharge outlet, and discharge outlet is connected by pipeline with draining pump, passes through draining pump and jet
Vavuum pump coordinates continues draining under negative pressure state, but after the water in water separator there was not Sand sucking headses, if not timely
Discharge, pore water pressure can influence the transmission of vacuum, cause energy consumption to increase and drainage efficiency reduction.
In addition, China Patent No.：201020176862.7 patent name：Straight-emission type vacuum prepressing drainage device, the practicality
New patent ties up drain bar and soft suction hose by using Plastic Bandage, avoids muddy water to tying up the influence at position, compares
Tied up in adhesive tape, simple and quick construction, cost are low, efficiency of construction is high, airtight quality is good.The side row set on soft suction hose
Water hole can avoid the mouth of pipe from being blocked, it is ensured that draining is reliable.It is disadvantageous in that：1) only filled in traditional vacuum prepressing water discharge
Put part and done a little process modification, improve drainage efficiency at all；2) drain bar easily blocks in drainage procedure；3) energy profit
Relatively low with rate, cost is larger.
The content of the invention
The defects of for existing vacuum preloading drainage arrangement, it is an object of the invention to provide a kind of vacuum preloading to be evacuated draining
System, energy-saving effect is obvious, and drainage efficiency obtains larger raising.
To achieve the above object, present invention employs following technical scheme：
The present invention provides a kind of vacuum preloading pumping drainage system, including vacuumizing part, pressure control room, drip chamber, negative pressure
Sensor, water level inductive switch, the part that draws water, single-chip microcomputer, water drainage part, geotechnological diaphragm seal, wherein：
Pressure control room is a confined air cavity, and the upper end of pressure control room is provided with gas outlet, lower end is provided with multiple air inlets, takes out
Vacuum component connects the upper end gas outlet of pressure control room by vacuum line, and the multiple air inlets in lower end of pressure control room pass through vacuum line
Tap multiple drip chambers and be responsible for multiple pending areas；B/P EGR Back Pressure Transducer EGR is installed on pressure control chamber interior walls bottom, and passes through single-chip microcomputer
Real-time negative pressure self-monitoring system is formed with vacuumizing part connecting communication, for monitoring the whole vacuum preloading pumping row in real time
The change of vacuum and signal is fed back into single-chip microcomputer in water system, and then control the work response of vacuumizing part；
Drip chamber is an airtight cavity, and the top of drip chamber is provided with water inlet and discharge outlet, top provided with exhaust outlet, lower end
Exhaust outlet is connected to the air inlet of pressure control room bottom by vacuum line, and the part that draws water is connected under drip chamber by vacuum line
End discharge outlet is used to discharge the water body that drip chamber collects, and the lower end that water drainage part is connected to drip chamber by vacuum line intakes
Mouthful；Water level inductive switch is installed on drip chamber upper inside wall, and forms real-time row by single-chip microcomputer and the part connecting communication that draws water
Water self-monitoring system, for monitoring the SEA LEVEL VARIATION in drip chamber in real time and data signal being fed back into single-chip microcomputer, and then control
Draw water part work response.
Further, vacuum is formed for completely cutting off air covered with geotechnological diaphragm seal on the surface of the pending area soil body.
Further, the single-chip microcomputer is the critical elements that signal received and ordered output, for controlling vacuumizing part
And the work for the part that draws water；The single-chip microcomputer is arranged as required to control parameter.
Further, pressure gauge is carried in the vacuumizing part, for recording the vacuum preloading pumping draining in real time
Vacuum in system, and access power supply under single-chip microcomputer control.
Further, check-valves is installed at the gas outlet of the pressure control room；The check-valves can be along vacuumizing part side
To one-way ventilating, for maintaining the vacuum of the whole vacuum preloading pumping drainage system, and reverse effect of holding one's breath is good.
Further, the vacuum line taps multiply vacuum manifold to connect multiple drainings in drip chamber lower end water inlet
Part, it was used as gurgling passage.
Further, check-valves is installed at the discharge outlet of the drip chamber lower end.
Further, the pressure control room is the closed container of lucite material or metal material.
Further, the drip chamber is the closed container of lucite material or metal material.
Further, the level sensor switch uses ultrasonic type level sensor or optoelectronic switch.
Further, the water drainage part is high performance plastics drain bar, and the insertion soil body is as vertical drainage passage.
Compared with prior art, the present invention has following beneficial effect：
System of the present invention has done larger improvement to the vacuum prepressing device commonly used in current engineering, clear in structure, former
Reason is clear and definite, and treatment effeciency is obviously improved, and energy-saving effect is notable, simple to operate, safe to use, and cost is cheap, is tried through indoor model
Test examination package unit operates steadily, and has reached Expected Results；The present invention can be easy to install in different pending area Reusabilities
Dismounting, has reached the multi-efficiencies such as high-efficiency and economic, energy-saving safety.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is a preferred embodiment overall system architecture schematic diagram of the invention；
In figure：Vavuum pump 1, check-valves 2, pressure control room 3, drip chamber 4, vacuum line 5, B/P EGR Back Pressure Transducer EGR 6, level sensor
7th, suction pump 8, single-chip microcomputer 9, drain bar 10, geotechnological diaphragm seal 11.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
Embodiment 1
For silt median particle diameter d50=5 μm, moisture content is 86% mud, and the present embodiment provides a kind of vacuum preloading and taken out
Gas drainage system, in the present embodiment, vacuumizing part 1 uses vavuum pump, and check-valves 2 uses straight check valve door, water level sense
Inductive switch uses digital display type level sensor.Certainly, in other embodiment, other parts or equipment, energy can also be selected
Realize corresponding function.
Specifically, as shown in figure 1, system described in the present embodiment is by vavuum pump 1, check-valves 2, pressure control room 3, drip chamber 4, true
Blank pipe road 5, B/P EGR Back Pressure Transducer EGR 6, level sensor 7, suction pump 8, single-chip microcomputer 9, drain bar 10, geotechnological diaphragm seal 11 form, its
In：
Vavuum pump 1 is connected to the gas outlet of the upper end of pressure control room 3 setting equipped with check-valves 2 by vacuum line 5, and true
Empty pump does encapsulation process with vacuum tube and vacuum tube with gas outlet junction；B/P EGR Back Pressure Transducer EGR 6 is arranged on the inwall bottom of pressure control room 3
Portion, and negative pressure self-monitoring system is collectively formed via single-chip microcomputer 9 and the connecting communication of vavuum pump 1, for monitoring the vacuum in real time
Precompressed is evacuated the change of vacuum in drainage system and signal is fed back into single-chip microcomputer 9, and then controls the work of vacuumizing part 1
Response；The upper end of drip chamber 4 is provided with exhaust outlet and the air inlet of the bottom of pressure control room 3 setting is connected to by vacuum line 5；Water level
Sensor 7 is installed on the upper end inwall appropriate location of drip chamber 4 (can adjust its position on demand), and suction pump 8 is connected by vacuum line 5
The discharge outlet that the lower end of drip chamber 4 is equipped with check-valves 2 is connected to, and via single-chip microcomputer 9 and the connecting communication of level sensor 7, drain bar
10 are connected to the water inlet of the lower end of drip chamber 4 setting by drain bar joint, and geotechnological diaphragm seal 11 is covered in pending area soil
Body surface face forms vacuum to completely cut off air, is monolithically fabricated Auto-drainage self-monitoring system, for monitoring the water in drip chamber 4 in real time
Data signal is simultaneously fed back to single-chip microcomputer 9 by position change, and then controls the work response of suction pump 8.
In the present embodiment, the vavuum pump 1 is using rated voltage 220V/50HZ, speed of exhaust 14.4m3/ h vavuum pump,
Vacuum is formed for being evacuated, carries pressure gauge thereon, for recording the vacuum in the vacuum preloading pumping drainage system in real time
Degree, and access power supply under the control of single-chip microcomputer 9.
In the present embodiment, the check-valves 2 is 4 points of bores, is evacuated direction one-way ventilating along vavuum pump 1, its one end passes through 4
Divide the exhaust outlet that pressure control room 3 is fixed on to silk, the other end is connected to vavuum pump with four taps connection vacuum line 5 is simultaneously finally closed
1。
In the present embodiment, the pressure control room 3 is an internal diameter 30cm, high 1m, thick 5mm cylindrical plexiglass box, resistance to
Pressure property and good leak tightness.
In the present embodiment, the cylindrical pressure-tight lucite that the drip chamber 4 is internal diameter a 30cm, high 50cm holds
Device.
In the present embodiment, the vacuum line 5 is made by internal diameter 20mm pvc pipe, and its length can be according to the actual feelings in scene
Condition changes, and can tap multiply vacuum manifold in the lower end water inlet of drip chamber 4 to connect multiple drain bars 10, is used as gurgling
Passage.
In the present embodiment, range -0.1Mpa~0 of B/P EGR Back Pressure Transducer EGR 6, the bottom interior wall of pressure control room 3 is installed on, can be monitored
Vacuum changes and data-signal is passed into single-chip microcomputer 9 in pressure control room 3.
In the present embodiment, the level sensor 7 uses ultrasonic type level sensor, is installed in the top of drip chamber 4
On wall, SEA LEVEL VARIATION in drip chamber 4 can be monitored and data-signal is passed into single-chip microcomputer 9.
In the present embodiment, the drain bar 10 is made up of high performance plastics drain bar, and plastic draining board length is 1.5m,
Away from 50cm × 50cm, it is inserted in pending Soft Soil Layer, as vertical drainage passage.
The job step of the present embodiment vacuum preloading pumping drainage system is as follows：
First set negative pressure self-monitoring system the control parameter of single-chip microcomputer 9 be：Vacuum -90kpa control vavuum pumps 1 close
Close, vacuum -70kpa control vavuum pumps 1, which are opened, to be vacuumized, and so whole vacuum preloading pumping drainage system will maintain all the time
In -70kpa~-90kpa vacuum ranges internal drainage；Set Auto-drainage self-monitoring system the control parameter of single-chip microcomputer 9 be：
Water level 20cm control suction pumps 8, which are opened, to be drawn water, and water level 3cm control suction pumps 8 are closed；Then vacuum preloading pumping drainage system will
Automatic cycling operating, untill soil solidifying degree reaches requirement.
Embodiment 2
For sediment grain size d50=8 μm, moisture content is 75% mud, and the present embodiment provides a kind of vacuum preloading pumping row
Water installations, described device are passed by vavuum pump 1, check-valves 2, pressure control room 3, drip chamber 4, vacuum line 5, B/P EGR Back Pressure Transducer EGR 6, water level
Sensor 7, suction pump 8, single-chip microcomputer 9, drain bar 10, geotechnological diaphragm seal 11 form, and each component connecting method is the same as described in embodiment 1
(as shown in Figure 1).
In the present embodiment, vavuum pump 1 the rated voltage 380V/60HZ, speed of exhaust 35m3/ h, formed very for being evacuated
Sky, pressure gauge is carried thereon, can record the vacuum in the vacuum preloading pumping drainage system in real time, and control in single-chip microcomputer 9
The lower access power supply of system.
In the present embodiment, the check-valves 2 is 1.5 person's pulse on the wrist footpaths, is evacuated direction one-way ventilating along vavuum pump 1, its one end is led to
1.5 cun of gas outlets that the pressure control room 3 is fixed on to silk are crossed, the other end is simultaneously final closed with 1.5 cun of joints connection vacuum lines 5
It is connected to vavuum pump 1.
In the present embodiment, the pressure control room 3 is a long 1m, wide 1m, high 80cm, thick 5mm canister, resistance to pressure and close
Closing property is good.
In the present embodiment, the drip chamber 4 is a long 30cm, wide 30cm, high 50cm metal enclosed container.
In the present embodiment, the vacuum line 5 is made by internal diameter 50mm PE pipes.
In the present embodiment, the level sensor 7 uses optoelectronic switch, can monitor in drip chamber 4 SEA LEVEL VARIATION and by number
It is believed that number passing to single-chip microcomputer 9.
The job step of the present embodiment vacuum preloading pumping drainage arrangement is as follows：
First set negative pressure self-monitoring system the control parameter of single-chip microcomputer 9 be：Vacuum -95kpa control vavuum pumps 1 close
Close, vacuum -80kpa control vavuum pumps 1, which are opened, to be vacuumized, and so whole vacuum preloading pumping drainage system will maintain all the time
In -80kpa~-95kpa vacuum ranges internal drainage；Set Auto-drainage self-monitoring system the control parameter of single-chip microcomputer 9 be：
Water level 20cm control suction pumps 8, which are opened, to be drawn water, and water level 5cm control suction pumps 8 are closed；Then vacuum preloading pumping drainage system will
Automatic cycling operating, untill soil solidifying degree reaches requirement.
Vacuum preloading pumping drainage system is provided very by a pressure control room for whole pending area described in the present embodiment
Idling pressure, mean allocation, it is automatically-monitored to can be achieved vacuum preloading drainage procedure, a large amount of to reduce vavuum pump dosages, energy consumption it is low and
Energy transformation ratio is high, improves drainage efficiency and operation rate of machinery, can Reusability and cost it is relatively low, reached high-efficiency and economic
Safe multi-efficiency.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (10)
1. a kind of vacuum preloading is evacuated drainage system, it is characterised in that is passed including vacuumizing part, pressure control room, drip chamber, negative pressure
Sensor, water level inductive switch, the part that draws water, single-chip microcomputer, water drainage part, geotechnological diaphragm seal, wherein：
Pressure control room is a confined air cavity, and the upper end of pressure control room is provided with gas outlet, lower end is provided with multiple air inlets, vacuumizes
Part connects the upper end gas outlet of pressure control room by vacuum line, and the multiple air inlets in lower end of pressure control room are tapped by vacuum line
Multiple drip chambers, it is responsible for multiple pending areas；B/P EGR Back Pressure Transducer EGR is installed on pressure control chamber interior walls bottom, and by single-chip microcomputer and takes out
Vacuum component connecting communication forms real-time negative pressure self-monitoring system, for monitoring the whole vacuum preloading pumping draining system in real time
The change of vacuum and signal is fed back into single-chip microcomputer in system, and then control the work response of vacuumizing part；
Drip chamber is an airtight cavity, and the top of drip chamber is provided with water inlet and discharge outlet, top exhaust provided with exhaust outlet, lower end
Mouth is connected to the air inlet of pressure control room bottom by vacuum line, and the lower end that the part that draws water connects drip chamber by vacuum line is arranged
The mouth of a river, the water body collected for discharging drip chamber, water drainage part are connected to the lower end water inlet of drip chamber by vacuum line；Water
Position inductive switch is installed on drip chamber upper inside wall, and forms real-time draining from prison by single-chip microcomputer and the part connecting communication that draws water
Control system, for monitoring the SEA LEVEL VARIATION in drip chamber in real time and data signal being fed back into single-chip microcomputer, and then control portion of drawing water
The work response of part.
2. a kind of vacuum preloading pumping drainage system according to claim 1, it is characterised in that in the pending area soil body
Surface covered with geotechnological diaphragm seal, form vacuum for completely cutting off air.
3. a kind of vacuum preloading pumping drainage system according to claim 1, it is characterised in that the single-chip microcomputer is signal
The element of output is received and orders, for controlling the work of vacuumizing part and the part that draws water；The single-chip microcomputer is set as needed
Put control parameter.
4. a kind of vacuum preloading pumping drainage system according to claim 1, it is characterised in that in the vacuumizing part
Pressure gauge is carried, for recording the vacuum in the vacuum preloading pumping drainage system in real time, and is connect under single-chip microcomputer control
Enter power supply.
A kind of 5. vacuum preloading pumping drainage system according to claim 1, it is characterised in that the outlet of the pressure control room
Check-valves is installed at mouthful；The check-valves can be along vacuumizing part direction one-way ventilating, for maintaining the whole vacuum pre-
The vacuum of pressure pumping drainage system, and reverse effect of holding one's breath is good.
6. a kind of vacuum preloading pumping drainage system according to claim 1, it is characterised in that the vacuum line is being arranged
Hydroecium lower end water inlet taps multiply vacuum manifold to connect multiple water drainage parts, is used as gurgling passage.
7. a kind of vacuum preloading pumping drainage system according to claim 1, it is characterised in that the drip chamber lower end
Check-valves is installed at discharge outlet.
8. a kind of vacuum preloading pumping drainage system according to claim 1, it is characterised in that the pressure control room, draining
Room is the closed container of lucite material or metal material.
A kind of 9. vacuum preloading pumping drainage system according to claim 1, it is characterised in that the level sensor switch
Using ultrasonic type level sensor or optoelectronic switch.
10. a kind of vacuum preloading pumping drainage system according to claim 1, it is characterised in that the water drainage part is
High performance plastics drain bar, the insertion soil body is as vertical drainage passage.
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| CN201510833670.6A CN105525606B (en) | 2015-11-25 | 2015-11-25 | A kind of vacuum preloading is evacuated drainage system |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331735B (en) * | 2018-03-06 | 2024-02-09 | 南京帝鼎数控科技有限公司 | Energy-saving intelligent vacuum station |
| CN108468324A (en) * | 2018-04-28 | 2018-08-31 | 天津大学 | Ultrasonic activation drain bar for vacuum pre-press reinforcing super soft ground |
| CN111364440A (en) * | 2020-03-20 | 2020-07-03 | 浙江智握领程科技股份有限公司 | Vacuum preloading construction monitor and working method thereof |
| CN114810564A (en) * | 2021-01-19 | 2022-07-29 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Tube tunnel vacuum control method and system |
| CN113945316B (en) * | 2021-08-31 | 2022-08-02 | 河海大学 | Negative pressure type under-film blind ditch and soil body air pressure distribution field test method |
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