Automatic internal pressure alarm system of sealing film used in vacuum combined surcharge preloading

A technology of combined stacking and automatic alarm, applied in the direction of measuring fluid pressure, measuring fluid pressure through electromagnetic elements, measuring device, etc. The effect of low cost, time reduction and labor intensity reduction

Inactive Publication Date: 2012-01-18
TIANJIN 20 CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the conventional method is to judge whether there is a problem with the sealing membrane by inspectors watching the value of the pressure gauge. The pressure decreases

Method used

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  • Automatic internal pressure alarm system of sealing film used in vacuum combined surcharge preloading
  • Automatic internal pressure alarm system of sealing film used in vacuum combined surcharge preloading

Examples

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Example Embodiment

[0009] In order to further understand the content, features, and effects of the present invention, the following embodiments are exemplified and described in detail with the accompanying drawings as follows:

[0010] See figure 1 , A vacuum combined preload preloading preloading sealing membrane pressure automatic alarm system, the pressure gauge SP of the vacuum preloading device is an electric contact pressure gauge, the normal open contact of the electric contact pressure gauge SP and an auxiliary normally open contact of the intermediate relay KA After being connected in parallel, the normally closed contact of the reset button SB is connected in series in the coil power supply circuit of the intermediate relay KA; the other auxiliary normally open contact of the intermediate relay KA is connected in series in the power supply circuit of the sound and light alarm BL.

[0011] In this embodiment, the model of the electrical contact pressure gauge SP is HQ-Y-100; the model of the...

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Abstract

The invention discloses an automatic internal pressure alarm system of a sealing film used in vacuum combined surcharge preloading. A pressure gauge of a vacuum preloading device is an electric contact pressure gauge; a normally-open contact of the electric contact pressure gauge is connected in parallel with one auxiliary normally-open contact of an intermediate relay and is then connected in series with a normally-closed contact of a reset button to a coil power supply loop of the intermediate relay; and another auxiliary normally-open contact of the intermediate relay is connected in series to a power supply loop of an audible and visual alarm. According to the automatic internal pressure alarm system, a structure that the electric contact pressure gauge and the audible and visual alarm work cooperatively is adopted, when the vacuum pressure is reduced to a set value, the audible and visual alarm is immediately started, and an operator on duty begin to check gas leak points at the first time, so the project quality is benefited; and meanwhile, the time, the machine fee and the electric charge needed by re-arriving at a design pressure are decreased, and the construction cost is reduced. Furthermore, the automatic alarm system has a simple structure, the mounting is convenient, the labor intensity is reduced to a great degree, the work efficiency is improved, the labor input is little, the cost is low, and the labor power, the material resources and the financial resources are saved.

Description

technical field [0001] The invention relates to an automatic alarm system, in particular to an automatic alarm system for pressure inside a vacuum combined surcharge preload sealing membrane. Background technique [0002] Most of the coastal areas in southern my country are silty coasts, and the soil layers are mostly silt, silty clay, silty loam and silt mixed sand layers, which belong to saturated normal compacted soft clay. This type of soil has the characteristics of high water content, high compressibility, poor permeability, high sensitivity, low strength and uneven thickness. The vacuum surcharge combined preloading method is a new technology for soft soil foundation reinforcement developed in recent years. The vacuum combined surcharge preloading method is safe and reliable, and the treatment effect is good. At present, this method is widely used in transportation, ports, water conservancy and other fields. [0003] The effect of vacuum preloading has a great relati...

Claims

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Application Information

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IPC IPC(8): G01L9/00G01L19/12
Inventor 肖策宋增力褚丝绪张永杰纪建成高有为
Owner TIANJIN 20 CONSTR
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