CN107780426A - A kind of device and construction method that base pit dewatering is carried out using Pneumatic water pump - Google Patents
A kind of device and construction method that base pit dewatering is carried out using Pneumatic water pump Download PDFInfo
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- CN107780426A CN107780426A CN201610736767.XA CN201610736767A CN107780426A CN 107780426 A CN107780426 A CN 107780426A CN 201610736767 A CN201610736767 A CN 201610736767A CN 107780426 A CN107780426 A CN 107780426A
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- water pump
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- compressor machine
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of device and construction method that base pit dewatering is carried out using Pneumatic water pump, device includes water pump, switch board, air compressor machine；The water pump is Pneumatic water pump, including container and sensor, container are made up of chamber wall and cavity volume, and sensor is arranged on the outer surface of chamber wall top surface；Water inlet, delivery port, air inlet are provided with the chamber wall, the water inlet and water outlet are respectively provided with check valve, air bleeding valve set at the air inlet.Advantage is：Being drawn water using Pneumatic water pump instead of immersible pump, water pump is less likely to be damaged, and without worrying equipment idle running；Pneumatic water pump is controlled using switch board, makes during pumping for water pump more precisely, to set vacuum generator to improve the efficiency taken out by being evacuated in well in addition.
Description
Technical field
The invention belongs to base pit dewatering field, more particularly to a kind of carry out the device of base pit dewatering using Pneumatic water pump and apply
Work method.
Background technology
, it is necessary to excavate foundation ditch in building construction process, need to carry out precipitation, the work of draining while excavating foundation ditch.
Specifically, before excavation of foundation pit, a number of filter pipe (well) is buried in foundation ditch surrounding, being drawn water using pumping equipment makes to be dug
Soil remain drying regime.The immersible pump that general well-points dewatering uses draws water, but immersible pump is complicated, easily damage
It is bad；Relative to immersible pump, it is more suitable in well-points dewatering that Pneumatic water pump is applied, and Pneumatic water pump includes container tank and control
Device.In use, controller can not accurately control air inflow, cause air compressor machine to dally, and waste energy, reduce work effect
Rate；And when construction area is larger, it is necessary to excavate multiple well points, multiple Pneumatic water pumps, but each pneumatic water are needed accordingly
It is independent state between pump, it is impossible to unified monitoring, can not timely respond to repair when Pneumatic water pump goes wrong.
The content of the invention
The present invention provides a kind of device and construction method that base pit dewatering is carried out using Pneumatic water pump, it is therefore an objective to：Solves gas
The problem of air compressor machine dallies in dynamic water pump control process, and realize the unified network management of multiple Pneumatic water pumps.
To achieve the above object, the technical solution adopted by the present invention is：
A kind of device that base pit dewatering is carried out using Pneumatic water pump, including water pump, switch board, air compressor machine；
The water pump is Pneumatic water pump, including container and sensor, container are made up of chamber wall and cavity volume, and sensor is set
On the outer surface of chamber wall top surface；It is provided with water inlet, delivery port, air inlet on the chamber wall, the water inlet and goes out
Check valve is respectively provided with the mouth of a river, air bleeding valve is set at the air inlet；
The switch board includes PLC control modules, control screen, power module for man-machine interaction, power module bag
Transformer and leakage switch are included, transformer is used to adjust mains voltage, and leakage switch is used for the earth leakage protective of circuit；It is described
Control screen and power module all electrically connect with PLC control modules, also true including being electrically connected with PLC control modules in switch board
Empty generator, relay and the magnetic valve for passing through relay control switch；
Connected using tracheae between the air bleeding valve and magnetic valve, connected between magnetic valve and air compressor machine using gas main,
The vacuum generator is connected with air compressor machine, and the vacuum end connection exhaust tube of vacuum generator, the other end of exhaust tube is arranged on
In well.
Preferably, the sensor selects leakage sensor, due to sensor to be arranged on to the outer surface of container top surface,
When the stitch that water did not had sensor produces electric signal, i.e., when sensor has electric signal, the liquid level in well has not crossed container, passes through
Water inlet can make to be full of water in whole cavity volume.
Preferably, being additionally provided with locating module and communication module on the switch board, locating module and communication module are equal
It is connected with PLC control modules, locating module is with the position for determining switch board, the number that communication module will gather in PLC control modules
According on transmission server.
Preferably, being provided with valve module of voltage regulation on the tracheae of the close magnetic valve, it is easy to observe admission pressure and hand
Dynamic regulation air inflow.
Preferably, between the tracheae and gas main using divide gas row connection.
A kind of construction method that base pit dewatering is carried out using Pneumatic water pump, is comprised the following steps：
1) preparation of construction：Field investigation is carried out according to level of ground water, soil property, foundation pit supporting system and water-stop curtain are set；
Determine the drilling well position of well point, grooved position, horizontal elevation；
2) drilling well：The well point for meeting depth is set using drilling machinery, and lays well point pipeline；
3) water pump is installed：Pneumatic water pump is respectively provided with each well point, and the outlet pipe of water pump is connected to total water outlet
Guan Shang, air inlet pipe are connected on magnetic valve, and magnetic valve is connected on air compressor machine；
4) control is drawn water：It is controlled and is drawn water by switch board, extract air in well out while drawing water, is formed negative
Pressure, improve efficiency of drawing water.
Preferably, the method that the switch board control is drawn water comprises the following steps：
1) input parameter, the volume v, the air inflow x of interior air compressor machine per second of input pod；
2) control model is selected：Switch board built-in 2 kinds of control models, MANUAL CONTROL mode and automatic control mode, choosing
MANUAL CONTROL mode is selected, voluntarily input parameter, control electromagnetic valve switch；Automatic control mode is selected, into step 3；
3) liquid level in production wells：Pass through the sensor sensing on Pneumatic water pump；Judge whether water level is more than
Equal to setting value, setting value is the height of container；
4) control air compressor machine is supplied gas：Step 2 testing result is yes, and PLC control modules are transmitted electric signal control relay and beaten
Open, while magnetic valve is opened, air compressor machine is supplied gas by gas main into container, while vacuum generator is opened, by air in well
Extraction forms negative pressure；
5) relay is closed：After the t times (t=v/x), relay is closed, while air compressor machine stops supplying gas, in cavity volume
Water discharge；
6) it is vented and intakes：Because the air pressure in container is more than endotracheal air pressure, air bleeding valve is opened, outwards exhaust,
When air pressure is equal in tracheal strips and container, exhaust stops, inwardly water inlet, and after the 3-5 seconds, water inlet is completed；
7) multiple step 3-6, realizes that automatically controlled water pump draws water, when water level is less than setting value, closed electromagnetic valve, and air compressor machine
Break-off, and it is switched to manual control.
Preferably, in pumping method is controlled, whenever relay switch once, PLC control modules are recorded, statistics
The number of relay switch calculates displacement.
Compared with prior art, it is an advantage of the invention that：Drawn water using Pneumatic water pump instead of immersible pump, water pump does not allow rapid wear
It is bad, and without worrying equipment idle running；Pneumatic water pump is controlled using switch board, makes more accurate, this peripheral hardware during pumping for water pump
Vacuum generator is put by being evacuated in well, improves the efficiency taken out.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of Pneumatic water pump of the present invention；
Fig. 3 is the structural representation of switch board of the present invention；
Fig. 4 is the flow chart of PLC control methods of the present invention.
Embodiment
The present invention is illustrated below in conjunction with the accompanying drawings.
Embodiment 1
With reference to shown in Fig. 1, Fig. 2 and Fig. 3, a kind of device that base pit dewatering is carried out using Pneumatic water pump, including water pump 2,
Switch board 3, air compressor machine 1；
As shown in Fig. 2 the water pump 2 is Pneumatic water pump, including container 21 and sensor 25, container 21 is by chamber wall and appearance
Chamber is formed, and sensor 25 is arranged on the outer surface of chamber wall top surface；Water inlet 211, delivery port are provided with the chamber wall
212nd, air inlet 213, are respectively provided with check valve 23 at the water inlet 211 and delivery port 212, the row of setting at the air inlet 213
Air valve 26；
As shown in figure 3, the switch board 3 includes PLC control modules 34, control screen 32, power supply for man-machine interaction
Module 31, power module 31 include transformer 311 and leakage switch 312, and transformer 311 is used to adjust mains voltage, leaked
Electric switch 312 is used for the earth leakage protective of circuit；The control screen 32 and power module 31 are all electrically connected with PLC control modules 34
Connect, in switch board 3 also include be connected with PLC control modules 34 vacuum generator, relay 33, by relay 33 control open
The magnetic valve 35 of pass；
Connected between the air bleeding valve 26 and magnetic valve 35 using tracheae 61, using total between magnetic valve 35 and air compressor machine 1
Tracheae 6 is connected, and the vacuum generator is connected with air compressor machine 1, the vacuum end connection exhaust tube (not shown) of vacuum generator,
The other end of exhaust tube is arranged in well.
Sensor 25 is arranged on to the outside of the top surface of container 21, what this sensor 25 detected is the liquid level in well,
Rather than the liquid level inside container, advantage are easy maintenance and replacements.
Further, the sensor 25 selects leakage sensor, due to sensor 25 is arranged on into the top surface of container 21
Outer surface, when water did not had the stitch of sensor 25 to produce electric signal, i.e., when sensor 25 has electric signal, the liquid level in well did not had
Container 21, can make to be full of water in whole cavity volume by water inlet 211.It is due to that other liquid levels pass from leakage sensor
Sensor structure is relative complex, although can liquid level in accurate judgement well, because the working environment in well is severe, sensor
Spoilage it is higher, it is simple in construction using leakage sensor, it is not easy to damage, the environment being adapted in well.
Embodiment 2
In order to the convenient maintenance of convenient statistics water yield and location control cabinet position, as shown in Figure 3, in embodiment 1
On the basis of, locating module and communication module are additionally provided with the switch board 3, locating module and communication module control with PLC
Module 34 connects, the locating module position for determining switch board 3, can be with when switch board 3 damages or water pump 2 goes wrong
Solve the particular location of water pump 2 and switch board 3.Communication module sends the data gathered in PLC control modules 34 on server.
Due to tally function built in PLC module, it is certain that the capacity of Pneumatic water pump, which is, by counting opening for relay 33
Number is closed, the water yield of well point can be calculated.
Embodiment 3
For more intuitive display data and convenient control manually, as shown in Figure 3, the tracheae of the close magnetic valve 35
Valve module of voltage regulation 37 is provided with 6, is easy to observe admission pressure and manually regulation air inflow.The tracheae 61 and gas main 6 it
Between using divide gas row 36 connection.
Divide on gas row 36 and be provided with the master switch that can be controlled manually and each switch-dividing, it is convenient that water pump is controlled manually
System.
Embodiment 4
A kind of construction method that base pit dewatering is carried out using Pneumatic water pump, is comprised the following steps：
1) preparation of construction：Field investigation is carried out according to level of ground water, soil property, foundation pit supporting system and water-stop curtain are set；
Determine the drilling well position of well point, grooved position, horizontal elevation；
2) drilling well：The well point for meeting depth is set using drilling machinery, and lays well point pipeline；
3) water pump is installed：Pneumatic water pump is respectively provided with each well point, and the outlet pipe of water pump is connected to total water outlet
Guan Shang, air inlet pipe are connected on magnetic valve, magnetic valve connection air compressor machine.
4) control is drawn water：It is controlled and is drawn water by switch board, extract air in well out while drawing water, is formed negative
Pressure, improve efficiency of drawing water.
As shown in Figure 4, a kind of method that switch board control is drawn water, comprise the following steps：
1) input parameter, the volume v, the air inflow x of interior air compressor machine 1 per second of input pod 21；
2) control model is selected：Switch board 3 built-in 2 kinds of control models, MANUAL CONTROL mode and automatic control mode, choosing
MANUAL CONTROL mode is selected, voluntarily input parameter, control magnetic valve 35 switchs；Automatic control mode is selected, into step 3；
3) liquid level in production wells：Sensed by the sensor 25 on water pump 2；Judge whether water level is more than
In setting value, setting value is the height of container 21；
4) control air compressor machine 1 is supplied gas：Step 2 testing result is yes, and PLC control modules 34 transmit electric signal control relay
33 are opened, while magnetic valve 35 is opened, and air compressor machine 1 is supplied gas by gas main 6 into container 21, while vacuum generator is opened,
Air in well is extracted out to form negative pressure；
5) relay 33 is closed：After the t times (t=v/x), relay 33 is closed, while air compressor machine 1 stops supplying gas,
Water discharge in cavity volume；
6) it is vented and intakes：Because the air pressure in container 21 is more than the air pressure in tracheae 61, air bleeding valve is opened, outwards row
Gas, when tracheae 61 is interior equal with air pressure in container 21, exhaust stops, inwardly water inlet, after the 3-5 seconds, intakes and completes；
7) multiple step 3-6, realizes that automatically controlled water pump draws water, when water level is less than setting value, magnetic valve 35 is closed, pneumatics
The break-off of machine 1, and it is switched to manual control.
Further, whenever relay 33 switchs once, PLC control modules 34 are recorded.
Embodiments of the invention are described in detail above, but the content is only presently preferred embodiments of the present invention,
It is not to be regarded as the practical range for limiting the present invention.Any changes and modifications in accordance with the scope of the present application,
All should still it belong within the patent covering scope of the present invention.
Claims (8)
1. a kind of device that base pit dewatering is carried out using Pneumatic water pump, including water pump, switch board, air compressor machine；It is characterized in that：Institute
It is Pneumatic water pump to state water pump, including container and sensor, container are made up of chamber wall and cavity volume, and sensor is arranged on chamber wall top
On the outer surface in face；Water inlet, delivery port, air inlet are provided with the chamber wall, the water inlet and water outlet are all provided with
Check valve is put, air bleeding valve is set at the air inlet；
The switch board includes PLC control modules, control screen and power module for man-machine interaction, and power module includes becoming
Depressor and leakage switch, transformer are used to adjust mains voltage, and leakage switch is used for the earth leakage protective of circuit；The control
Screen and power module are all electrically connected with PLC control modules, and the vacuum hair electrically connected with PLC control modules is also included in switch board
Raw device, relay and the magnetic valve for passing through relay control switch；
Connected using tracheae between the air bleeding valve and magnetic valve, connected between magnetic valve and air compressor machine using gas main, it is described
Vacuum generator is connected with air compressor machine, and the vacuum end connection exhaust tube of vacuum generator, the other end of exhaust tube is arranged in well.
A kind of 2. device that base pit dewatering is carried out using Pneumatic water pump according to claim 1, it is characterised in that：The biography
Sensor selects leakage sensor.
A kind of 3. device that base pit dewatering is carried out using Pneumatic water pump according to claim 1 or 2, it is characterised in that：Institute
State and locating module and communication module are additionally provided with switch board, locating module and communication module are connected with PLC control modules.
A kind of 4. device that base pit dewatering is carried out using Pneumatic water pump according to claim 3, it is characterised in that：It is described to lean on
Valve module of voltage regulation is provided with the tracheae of nearly magnetic valve, is easy to observe admission pressure and manually regulation air inflow.
A kind of 5. device that base pit dewatering is carried out using Pneumatic water pump according to claim 4, it is characterised in that：The gas
Pipe gas main between using divide gas row connect.
6. a kind of construction method that base pit dewatering is carried out using Pneumatic water pump, is comprised the following steps：
1) preparation of construction：Field investigation is carried out according to level of ground water, soil property, foundation pit supporting system and water-stop curtain are set；It is determined that
The drilling well position of well point, grooved position, horizontal elevation；
2) drilling well：The well point for meeting depth is set using drilling machinery, and lays well point pipeline, the pipeline of laying is metal material
Matter, and wellhead sealing；
3) water pump is installed：Pneumatic water pump is respectively provided with each well point, and the outlet pipe of water pump is connected on total outlet pipe,
Air inlet pipe is connected on magnetic valve, and magnetic valve is connected on air compressor machine.
4) control is drawn water：It is controlled and is drawn water by switch board, extract air in well out while drawing water, is formed negative pressure, carry
Height draws water efficiency.
A kind of 7. construction method that base pit dewatering is carried out using Pneumatic water pump according to claim 6, it is characterised in that：Institute
The method that switch board control is drawn water is stated to comprise the following steps：
1) input parameter, the volume v, the air inflow x of interior air compressor machine per second of input pod；
2) control model is selected：Switch board built-in 2 kinds of control models, MANUAL CONTROL mode and automatic control mode, select hand
Dynamic control model, voluntarily input parameter, controls electromagnetic valve switch；Automatic control mode is selected, into step 3；
3) liquid level in production wells：Pass through the sensor sensing on Pneumatic water pump；Judge whether water level is more than or equal to
Setting value, setting value are the height of container；
4) control air compressor machine is supplied gas：Step 2 testing result is yes, and PLC control modules are transmitted electric signal control relay and opened, together
When magnetic valve open, air compressor machine supplied gas by gas main into container, while vacuum generator is opened, and extracts air in well out shape
Into negative pressure；
5) relay is closed：After the t times (t=v/x), relay is closed, while air compressor machine stops supplying gas, the water in cavity volume
Discharge；
6) it is vented and intakes：Because the air pressure in container is more than endotracheal air pressure, air bleeding valve is opened, and outwards exhaust, works as gas
When equal with air pressure in container in pipe, exhaust stops, inwardly water inlet, and after the 3-5 seconds, water inlet is completed；
7) multiple step 3-6, realizes that automatically controlled water pump draws water, when water level is less than setting value, closed electromagnetic valve, and air compressor machine pause
Work, and it is switched to manual control.
A kind of 8. construction method that base pit dewatering is carried out using Pneumatic water pump according to claim 7, it is characterised in that：Often
When relay switch once, PLC control modules are recorded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736767.XA CN107780426A (en) | 2016-08-26 | 2016-08-26 | A kind of device and construction method that base pit dewatering is carried out using Pneumatic water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736767.XA CN107780426A (en) | 2016-08-26 | 2016-08-26 | A kind of device and construction method that base pit dewatering is carried out using Pneumatic water pump |
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| CN107780426A true CN107780426A (en) | 2018-03-09 |
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| CN201610736767.XA Pending CN107780426A (en) | 2016-08-26 | 2016-08-26 | A kind of device and construction method that base pit dewatering is carried out using Pneumatic water pump |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185052A (en) * | 2019-04-24 | 2019-08-30 | 宁波安信数控技术有限公司 | A kind of servo-driver is applied to the method and system of base pit dewatering |
| CN111206624A (en) * | 2020-02-23 | 2020-05-29 | 北京中岩智泊科技有限公司 | Pressure-reducing anti-floating structure for underground construction/structure and construction method |
| CN113250222A (en) * | 2021-05-31 | 2021-08-13 | 中铁十八局集团有限公司 | Intelligent pneumatic dewatering device for subway station foundation pit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201778329U (en) * | 2010-07-16 | 2011-03-30 | 上海长凯岩土工程有限公司 | Pneumatic type multi-well dewatering system with automatic control function |
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2016
- 2016-08-26 CN CN201610736767.XA patent/CN107780426A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201778329U (en) * | 2010-07-16 | 2011-03-30 | 上海长凯岩土工程有限公司 | Pneumatic type multi-well dewatering system with automatic control function |
Non-Patent Citations (2)
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| 许光驰: "《机电设备安装与调试》", 31 March 2012 * |
| 邓其贵: "《变频器操作与工程项目应用》", 31 August 2009 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185052A (en) * | 2019-04-24 | 2019-08-30 | 宁波安信数控技术有限公司 | A kind of servo-driver is applied to the method and system of base pit dewatering |
| CN111206624A (en) * | 2020-02-23 | 2020-05-29 | 北京中岩智泊科技有限公司 | Pressure-reducing anti-floating structure for underground construction/structure and construction method |
| CN113250222A (en) * | 2021-05-31 | 2021-08-13 | 中铁十八局集团有限公司 | Intelligent pneumatic dewatering device for subway station foundation pit |
| CN113250222B (en) * | 2021-05-31 | 2023-02-28 | 中铁十八局集团有限公司 | Intelligent pneumatic dewatering device for subway station foundation pit |
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Application publication date: 20180309 |