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A vacuum pre-pressurization pumping drainage system

A drainage system and vacuum technology, applied in soil protection, construction, infrastructure engineering and other directions, to achieve the effect of clear structure, improved treatment efficiency and stable operation

Active Publication Date: 2018-03-23
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the defects of the existing vacuum preloading drainage device, the purpose of the present invention is to provide a vacuum preloading suction drainage system, which has obvious energy-saving effect and greatly improved drainage efficiency

Method used

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  • A vacuum pre-pressurization pumping drainage system

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Effect test

Embodiment 1

[0030] For sediment median particle size d 50 = 5 μm, mud with a moisture content of 86%, this embodiment provides a vacuum pre-pressurization pumping drainage system, in this embodiment, the vacuum pumping component 1 adopts a vacuum pump, the check valve 2 adopts a straight-through one-way valve, and the water level sensor The switch adopts digital display water level sensor. Of course, in other embodiments, other components or devices may also be selected, as long as they can realize corresponding functions.

[0031] Specifically, such as figure 1 As shown, the system described in this embodiment consists of a vacuum pump 1, a check valve 2, a pressure control chamber 3, a drainage chamber 4, a vacuum pipeline 5, a negative pressure sensor 6, a water level sensor 7, a water pump 8, a single-chip microcomputer 9, and a drainage plate 10 , geotechnical sealing film 11 compositions, wherein:

[0032] The vacuum pump 1 is connected to the air outlet provided on the upper end...

Embodiment 2

[0044] For the sediment particle size d 50 = 8 μm, mud with a moisture content of 75%, the present embodiment provides a vacuum preloading air extraction and drainage device, the device is composed of a vacuum pump 1, a check valve 2, a pressure control chamber 3, a drainage chamber 4, a vacuum pipeline 5, Negative pressure sensor 6, water level sensor 7, water pump 8, single-chip microcomputer 9, drainage board 10, geotechnical sealing film 11 are formed, and each parts connection method is described in embodiment 1 (as figure 1 shown).

[0045] In this embodiment, the rated voltage of the vacuum pump 1 is 380V / 60HZ, and the pumping rate is 35m 3 / h, used for air extraction to form a vacuum, with a pressure gauge on it, which can record the vacuum degree in the vacuum pre-pressure air extraction and drainage system in real time, and is connected to the power supply under the control of the single-chip microcomputer 9 .

[0046] In this embodiment, the check valve 2 has a ca...

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Abstract

The invention provides a novel vacuum preloading air-exhaust drainage system. According to the system, a vacuumizing component is connected with an air outlet of the upper end of a pressure control chamber through a vacuum pipeline; a plurality of drainage chambers are connected with an air inlet of the lower end of the pressure control chamber through vacuum pipelines; a negative pressure sensor is installed at the bottom of the inner wall of the pressure control chamber and is connected with the vacuumizing component for communication through a single chip microcomputer to form a real-time negative pressure self-monitoring system; water suction pumps are connected with water outlets of the lower ends of the drainage chambers through vacuum pipelines; drainage components are connected with water inlets of the lower ends of the drainage chambers through vacuum pipelines; water level inductive switches are installed on the upper portions of the inner walls of the drainage chambers, and each water level inductive switch is connected with the corresponding water suction pump for communication through a single chip microcomputer to form a real-time drainage self-monitoring system. According to the novel vacuum preloading air-exhaust drainage system, automatic monitoring of the vacuum preloading drainage process can be achieved, the number of the vacuum pumps is substantially reduced, energy consumption is low, the energy transformation ratio is high, the drainage efficiency and the machine utilization rate are improved, and the novel vacuum preloading air-exhaust drainage system can be used repeatedly, is low in cost and achieves the multiple effects of high efficiency, economy and safety.

Description

technical field [0001] The invention relates to an energy-saving foundation treatment system, in particular to a vacuum pre-pressurization and drainage system. Background technique [0002] For many coastal areas of the country, the serious shortage of land resources is an important factor restricting their economic development, and land reclamation is an important way to solve the shortage of land resources. In dredging and reclamation construction, the moisture content of the soil determines the bearing capacity of the foundation of the reclamation area. The early moisture content is very high, how to reduce the moisture content of the dredger fill is a key task in the foundation treatment of the dredger fill area. [0003] At present, the method of rapid drainage and consolidation of vacuum preloading is mainly used for drainage treatment of dredged foundations. The traditional vacuum preloading method can effectively deal with soft foundations. The specific method is to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/10
CPCE02D3/10
Inventor 喻国良祝文龙
Owner SHANGHAI JIAOTONG UNIV