CN115683222A - Intelligent monitoring system for grouting filling of pipe curtain steel pipe - Google Patents

Abstract

The invention relates to the technical field of grouting detection, in particular to an intelligent monitoring system for grouting filling of a pipe curtain steel pipe, which comprises a pressure sensing device and a signal acquisition module, wherein the pressure sensing device comprises a pressure sensor, a pressure sensor and a pressure sensor; the pressure sensing device is arranged in the pipeline and used for detecting whether grouting in the pipeline reaches a preset position or not, and the pressure sensing device is connected with the signal acquisition module through a transmission line; the signal acquisition module is used for receiving the data of the pressure sensing device and transmitting the data to the outside of the pipeline; the pressure sensing device comprises a pressure sensor and a temperature sensor. According to the invention, the pressure sensor is arranged in the pipeline and is matched with temperature compensation, so that the monitoring of the grouting position and the grouting filling rate is realized, and the problems that a better method for ensuring the filling rate cannot be provided at present, and extra grouting is mostly adopted on site to reduce cavities as far as possible are solved.

Description

An intelligent monitoring system for grouting filling of pipe curtain steel pipe

technical field

The invention relates to the technical field of grouting detection, in particular to an intelligent monitoring system for grouting filling of pipe curtain steel pipes.

Background technique

In the process of pipe curtain construction, a very important process is to inject grout into the pipe to improve the strength of the pipe. Most of the current grouting methods are to inject grout into the pipe at both ends of the pipe at the same time, because the grout is viscous, and when the distance between the pipe curtains is long, it is easy to happen that the grout cannot completely fill the pipe. The occurrence of this situation will cause the strength of the pipe curtain to fail to reach the predetermined target, and the part that is not filled with slurry is prone to deformation under the action of external force, which further affects the strength of the pipe. However, there is no better method to ensure the filling rate at present, and the method of additional grouting is mostly used on site to reduce the void as much as possible. This method has the disadvantages of high cost, low efficiency, and cannot guarantee the grouting effect, so it is necessary to A device can provide a relatively clear index during grouting to ensure the filling rate. For this reason, we propose an intelligent monitoring system for grouting filling of pipe curtain steel pipes.

Contents of the invention

Based on the technical problems existing in the background technology, the present invention proposes an intelligent monitoring system for grouting and filling of pipe-curtain steel pipes. By setting pressure sensors inside the pipeline and cooperating with temperature compensation, the monitoring of grouting position and grouting filling rate is realized. , to solve the problem that there is no better method to ensure the filling rate at present, and the method of additional grouting is mostly used on site to reduce the cavity as much as possible. This method has the problems of high cost, low efficiency, and cannot guarantee the grouting effect.

The present invention provides the following technical solutions: an intelligent monitoring system for grouting and filling of pipe-curtain steel pipes, including a pressure sensing device and a signal acquisition module;

The pressure sensing device is arranged in the pipeline to detect whether the grouting in the pipeline reaches a predetermined position, and the pressure sensing device is connected to the signal acquisition module through a transmission line; the signal acquisition module is used to receive the data of the pressure sensing device and transmit to the outside of the pipeline;

The pressure sensing device includes a pressure sensor and a temperature sensor.

Preferably, the pressure sensing device further includes a sleeve, the pressure sensor is arranged on both sides of the sleeve, and the temperature sensor is arranged at the bottom of the sleeve.

Preferably, the pressure sensor is a thin film pressure sensor.

Preferably, several numbered pressure sensing devices are arranged at intervals in the pipeline, and the pressure sensors and temperature sensors of the pressure sensing devices are powered and transmit data through transmission lines.

Preferably, the sleeve is welded on the top of the inner wall of the pipeline, and the temperature sensor on the outside of the sleeve faces downward.

Preferably, the signal acquisition module is installed in an integrated box and provided with a built-in power supply.

Preferably, the signal acquisition module is connected to a plurality of pressure sensing devices through transmission lines, and a flange is provided between the integration box and the transmission lines.

Preferably, both ends of the sleeve of the pressure sensing device are provided with sealing rings.

The invention provides an intelligent monitoring system for grouting and filling of pipe curtain steel pipes. By setting a pressure sensor, when the cement slurry is injected into a certain position in the pipe, the external pressure will change, so that the internal current will change. It can judge whether the cement slurry has reached the predetermined position. By setting the temperature sensor, the initial value of the temperature sensor should be slightly higher than the local air temperature, and when the cement slurry enters and solidifies in the later stage, there is an obvious change in temperature. If this change does not occur, it means that the temperature sensor is not wrapped by the cement slurry , additional grouting is required. The invention forms a new grouting detection system by combining a thin-film pressure sensor and a temperature sensor, which is placed on the top of the pipeline to detect whether the grouting reaches the predetermined position, and solves the problem that there is no better method for ensuring filling rate, the site usually uses additional grouting to reduce voids as much as possible. This method has the problems of high cost, low efficiency, and cannot guarantee the grouting effect.

Description of drawings

Fig. 1 is the installation diagram of pressure sensing device of the present invention;

Fig. 2 is a schematic diagram of the connection between the pressure sensing device and the transmission line of the present invention;

3 is a schematic diagram of a pressure sensing device of the present invention;

Fig. 4 is a side view of the pressure sensing device of the present invention;

Fig. 5 is a schematic diagram of the signal acquisition module of the present invention.

In the figure: 1. pipeline; 2. pressure sensing device; 21. pressure sensor; 22. temperature sensor; 23. sleeve; 24. sealing ring; 3. transmission line; 4. signal acquisition module; 5. integration box; 6. Built-in power supply; 7. Flange.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The present invention provides a technical solution: an intelligent monitoring system for grouting and filling of pipe curtain steel pipes, including a pressure sensing device 2 and a signal acquisition module 4;

As shown in Figures 1 and 2, the pressure sensing device 2 is arranged in the pipeline 1, and is used to detect whether the grouting in the pipeline 1 reaches a predetermined position, and the pressure sensing device 2 is connected with the signal acquisition module 4 through the transmission line 3; the signal acquisition module 4 is used To receive the data from the pressure sensing device 2 and transmit it to the outside of the pipeline 1 .

As shown in FIGS. 3 and 4 , the pressure sensing device 2 includes a pressure sensor 21 and a temperature sensor 22 .

The pressure sensing device 2 further includes a sleeve 23 , the pressure sensor 21 is disposed on both sides of the sleeve 23 , and the temperature sensor 22 is disposed at the bottom of the sleeve 23 . The pressure sensor 21 is a thin film pressure sensor. Several numbered pressure sensing devices 2 are arranged at intervals in the pipeline 1 , and the pressure sensors 21 and temperature sensors 22 of the pressure sensing devices 2 are powered and transmit data through the transmission line 3 . The sleeve 23 is welded on the top of the inner wall of the pipeline 1, and the temperature sensor 22 outside the sleeve 23 faces downward. Sealing rings 24 are provided at both ends of the sleeve 23 of the pressure sensing device 2 . The pressure sensing device 2 is also provided with an existing voltage acquisition card and a signal conversion module for collecting and converting the data collected by the pressure sensor 21 and the temperature sensor 22 .

Combining the thin-film pressure sensor and the temperature sensor 22 forms a new grouting detection system, which is placed on the top of the pipeline 1 to detect whether the grouting reaches a predetermined position. Among them, the thin-film pressure sensor can choose MF-6060 array flexible thin-film pressure sensor. The principle of choosing a thin-film pressure sensor is that when the cement slurry is injected into the pipe and reaches a certain position, the external pressure changes, so that the internal current changes, so that it can be judged whether the cement slurry has reached the predetermined position. The initial pressure value should be the local normal atmospheric pressure value or slightly higher, and when the cement slurry is injected, the air pressure value will increase accordingly, and when the cement slurry reaches the predetermined position, the pressure will rise sharply. If there is no such phenomenon, It means that the grout has not reached the predetermined position and additional grouting is required.

As shown in FIG. 5 , the signal acquisition module 4 is installed in an integrated box 5 and is provided with a built-in power supply 6 .

The signal acquisition module 4 is connected to a plurality of pressure sensing devices 2 through the transmission line 3 , and a flange 7 is arranged between the integration box 5 and the transmission line 3 .

The pressure sensors 21 in each pipe joint are numbered as a group, and the signal transmission lines 3 of each group of pressure sensors 21 are collected in a signal acquisition module 4, and then directly transmitted to the outside by the signal acquisition module 4. Since there is no need to monitor other content, the transmission line 3 of the pressure sensor 21 can use only one signal line for transmission. The main purpose of sub-module transmission is to reduce the number of long-distance signal lines and prevent damage. Each pressure sensor 21 can be arranged sparsely at both ends of the overall pipeline 1 according to the actual needs of the site, and only one pipe joint is enough. When it is located in the middle of the pipeline 1, it needs to be densely arranged. The appropriate distance is 0.2-0.5m. During installation, the pressure sensing device 2 needs to be placed on the top of the pipeline 1, the temperature sensor 22 is downward, and a blank position has been reserved on the top of the pressure sensing device 2. Generally, steel pipes are used for pipe curtain construction, and the blank position can be connected with the The steel pipes are welded to ensure the strength of the joints and prevent loosening under the impact of cement slurry, which will affect the monitoring effect.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solutions of the present invention and its Any equivalent replacement or change of the inventive concept shall fall within the protection scope of the present invention.

Claims (8)

1. An intelligent monitoring system for grouting filling of pipe-curtain steel pipes, comprising a pressure sensing device (2) and a signal acquisition module (4); The pressure sensing device (2) is arranged in the pipeline (1) to detect whether the grouting in the pipeline (1) has reached a predetermined position, and the pressure sensing device (2) communicates with the signal acquisition module (4) through the transmission line (3) ) connection; the signal acquisition module (4) is used to receive the data of the pressure sensing device (2) and transmit it to the outside of the pipeline (1); The pressure sensing device (2) includes a pressure sensor (21) and a temperature sensor (22). 2. An intelligent monitoring system for grouting filling of pipe curtain steel pipes according to claim 1, characterized in that: the pressure sensing device (2) also includes a sleeve (23), and the pressure sensor (21 ) are arranged on both sides of the sleeve (23), and the temperature sensor (22) is arranged at the bottom of the sleeve (23). 3. An intelligent monitoring system for grouting filling of pipe curtain steel pipes according to claim 1, characterized in that: the pressure sensor (21) is a thin-film pressure sensor. 4. An intelligent monitoring system for grouting filling of pipe curtain steel pipes according to claim 1, characterized in that: several numbered pressure sensing devices (2) are arranged in the pipeline (1) at intervals, and the Both the pressure sensor (21) and the temperature sensor (22) of the pressure sensing device (2) are powered and transmit data through the transmission line (3). 5. An intelligent monitoring system for grouting filling of pipe curtain steel pipes according to claim 2, characterized in that: the sleeve (23) is welded on the top of the inner wall of the pipeline (1), and the sleeve (23) The external temperature sensor (22) faces downwards. 6. An intelligent monitoring system for grouting filling of steel pipes with curtains according to claim 1, characterized in that: the signal acquisition module (4) is installed in the integration box (5) and is provided with a built-in power supply (6). 7. An intelligent monitoring system for grouting filling of steel pipes for pipe curtains according to claim 6, characterized in that: the signal acquisition module (4) communicates with a plurality of pressure sensing devices (2) through the transmission line (3) connected, and a flange (7) is provided between the integration box (5) and the transmission line (3). 8. An intelligent monitoring system for grouting and filling of steel pipes with curtains according to claim 1, characterized in that: the two ends of the sleeve (23) of the pressure sensing device (2) are provided with sealing rings (24 ).

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