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Grouting pressure control device

A pressure control and grouting technology, applied in construction, infrastructure engineering and other directions, can solve the problems of stratum lifting, low degree of automation, low control precision, etc., and achieve the effect of reducing frictional resistance of sealing and flexible up and down movements

Pending Publication Date: 2018-08-24
SINOHYDRO FOUND ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This manual control method is flexible in operation, and the operator can make emergency treatment according to on-site emergencies, and achieve the purpose of controlling pressure to a certain extent, but there are also many defects, such as its low control accuracy, low degree of automation, and manpower. The cost is high, and the peak pressure is too high during the grouting process, which may easily cause the formation to lift

Method used

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Embodiment 1

[0026] Such as Figure 1 to Figure 3 As shown, this embodiment provides a grouting pressure control device, including a pressure sensor 2 and a high-pressure valve 3 arranged on the grouting pipeline 1 along the flow direction of the grouting material. The pressure sensor 2 is electrically connected to a control unit 4, and the high-pressure The valve 3 is connected to the power unit, and the power unit is electrically connected to the control unit 4 .

[0027] The pressure sensor 2 is used to monitor the real-time pressure of the grouting pipeline 1 and transmit the real-time data to the control unit 4 . The high-pressure valve 3 is the terminal actuator of the grouting pressure control device, and the pressure of the grouting system can be changed by changing the opening size of the high-pressure valve 3 . The power unit is used to control the opening size of the high pressure valve 3 .

[0028] The grouting pressure control device monitors the pressure change in the grout...

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Abstract

The invention belongs to the technical field of gas and liquid pressure flow control, and discloses a grouting pressure control device comprising a pressure sensor and a high-pressure valve which arearranged on a grouting pipeline in the flow direction of grouting materials. The pressure sensor is electrically connected to a control unit, and the high-pressure valve is connected to a power unit used for controlling the opening degree of the high-pressure valve; and the power unit is electrically connected to the control unit. According to the grouting pressure control device provided by the invention, the pressure change in the grouting process is monitored through the pressure sensor on the grouting pipeline in real time, and pressure signals fed back by the pressure sensor are comparedwith the grouting pressure preset by the control unit; if the feedback pressure is beyond the preset grouting pressure, the power unit is controlled by the control unit to adjust the opening degree ofthe high-pressure valve, so that automatic control over the grouting pressure in the grouting process is achieved.

Description

technical field [0001] The invention belongs to the technical field of gas and liquid pressure and flow control, and in particular relates to a grouting pressure control device. Background technique [0002] Grouting construction is a commonly used reinforcement method in dam foundation construction at home and abroad, and grouting pressure is one of the key parameters affecting grouting quality. Due to the influence of factors such as nonlinearity and the uncertainty of stratum changes in the grouting process, the existing manual control method has poor control accuracy, and the safety and economy of the project cannot be guaranteed. Therefore, it has high theoretical value and application significance to carry out the research on the intelligent grouting pressure control device. [0003] During the grouting construction process, due to the instability of the discharge flow rate of the grouting pump, the decrease of the grout absorption rate of the formation with the filli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/02
CPCE02D15/02E02D2250/003
Inventor 孙仲彬张裕文杨振中杜晓麟杨雨朱勇孙静
Owner SINOHYDRO FOUND ENG
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