SupplyCoal rock grouting test and fiber optic sensing monitoring device， Coal rock grouting test and fiber optic sensing monitoring devicequotation manufactor, purpose

Instructions for Use

I. Overview

System performance of constant speed and pressure grouting system and supporting fiber optic sensing monitoring equipment

1. have1The coal rock grouting system is capable of achieving constant speed and pressure grouting, with adjustable grouting pressure and flow rate, and practical operability;

2. The platform provided by the grouting system can simulate the temperature, pressure, and seepage conditions of the formation;

3. The optical fiber sensing monitoring system can obtain the seepage pressure and resistivity changes of middling coal rock mass during grouting, and reflect the slurry flow through the seepage pressure and resistivity changes at different positions;

2、 System requirements

1. system components

According to the system performance requirements, the coal rock grouting test and fiber optic sensing monitoring system includes four parts: coal rock pretreatment subsystem, grouting subsystem, formation simulation subsystem, and monitoring subsystem. The main technical components are shown in the table.

System technology components

2. system requirements

1）Grouting pump

①The grouting pump is a constant speed and pressure pump that can provide stable and adjustable grouting pressure and flow during the grouting process, ensuring the feasibility and accuracy of grouting tests;

②The grouting pump can achieve the grouting process of most grouting materials, adapt to dual liquid grouting, and has universality;

③The grouting pump is controlled by a computer, and the setting of grouting parameters should be flexible and convenient;

④Can meet safety requirements.

2）Grouting pipeline

The grouting pipeline connects the grouting pump and the grouting platform, ensuring sufficient strength of the pipeline.

3）Grouting platform

①The grouting platform can have a diameter of12cmThe cylindrical test block provides grouting space, which can apply pressure to the specimen, maintain a constant temperature, and simulate the seepage field;

②The platform strength is high enough to withstand12MPaThe grouting pressure and safety factor are greater than2There is a warning device when the pressure is too high；

③Compact structure, easy operation, and beautiful appearance.

4）Monitoring system

①The monitoring system is capable of obtaining real-time pressure and resistivity changes of the grouting test block, requiring sufficient accuracy;

②The monitoring data obtained by the monitoring system can be visually observed and easily obtained.

3、 Technical indicators

The technical indicators of the grouting system mainly include pressure indicators, flow indicators, monitoring indicators, and other indicators.

1. Pressure indicator: grouting pressure0.05~10.0 MPa, adjustable; formation pressure0~12.0 MPaAdjustable.

2. Traffic indicators:0.01~600mL/minAdjustable.

3. Monitoring indicators: The pressure monitoring sensor achieves monitoring accuracy0.25level;The accuracy of the resistivity monitoring sensor has reached0.1Oh.

4. Other indicators: Constant temperature control range20~80℃, adjustable; Seepage pressure0~12.0 MPaAdjustable.

4、 Description of grouting system

1、 Significance of grouting system

The laboratory research on grouting and grouting effect monitoring is a difficult problem in the current grouting test. In order to achieve the indoor testing of coal and rock grouting, a laboratory coal and rock grouting test system is designed. The system is capable of conducting indoor high simulation grouting tests, obtaining grouting characteristics of coal rock mass (porous medium, fractured medium, and loose medium), and verifying the injectability of coal rock mass.

2、 Introduction to grouting system

The coal rock grouting test and fiber optic sensing monitoring system includes two parts: the grouting system and the monitoring system. The grouting system can achieve constant speed and pressure grouting, with adjustable grouting pressure and flow rate, simulating and reflecting the actual conditions of the engineering site; The monitoring system can monitor the diffusion law of the grout (pressure data, flow rate data) of the grouting object. The schematic diagram of the grouting system is shown in Figure 1.

1 Monitoring and control host 2, grouting pump 3, grouting tank 4, high temperature and high pressure grouting platform 5, confining pressure pump 6, manual seepage pump 7, resistivity sensing element 8, grouting specimen 9, pressure sensing element

Figure 1 Schematic diagram of grouting system

5、 Explanation of each section

1）Monitoring and Control Host-1: Monitor the diffusion law of grout in the grouting system, including data on grout pressure, grout flow rate, etc; Set the grouting parameters, control the grouting pump, and provide feedback and adjustment for the grouting and monitoring system.

2）Grouting pump-2: Provides grouting pressure and can adapt to single and double liquid grouting.

3）Slurry storage tank-3: Slurry storage.

4）High temperature and high-pressure grouting platform-4: fixing, heating, and pressurizing grouting test blocks to provide a grouting environment.

5）Pressure pump-5: Set the confining pressure of the specimen.

6）Seepage pump-6: Provides seepage pressure during the grouting process and simulates the seepage field in the geological environment.Seepage pressure less than 16.0MPa

7）Electrical resistivity sensing element-7: During the process of chemical slurry injection, analyze the changes in environmental resistivity in time and space, and obtain the diffusion law of the specimen's slurry in time and space.

8）Grouting test specimen -8: porous medium, fissure medium, loose medium.

9）Pressure sensing component-9: Obtain the pressure parameters of the grout at the inlet and outlet ends of the grouting platform during the grouting process, and provide overload protection function and excessive pressure warning.

2） Size Description of Grouting Test Piece

The grouting test piece is wrapped by a high-pressure rubber sleeve, with a diameter of 120mm and a height of 200mm. During the grouting process, the slurry is injected from the inlet end of the grouting platform for grouting. The slurry flowing out from the cracks and pores flows out from the outlet end. A resistivity sensor is installed on the contact surface between the high-pressure rubber sleeve and the grouting test block to obtain the changes in resistivity of the grouting test piece during the grouting process, in order to determine the flow and diffusion of the slurry. As shown in Figure 2.

Figure 2 Size of grouting specimens and arrangement of resistivity monitoring elements

• Technical parameter description of components

1. Control Center

Composed of a combination of computers and industrial control systemsAutomatic Data Collection and Processing System

Composed of a computer, data acquisition board, and data acquisition and processing software. It can automatically collect real-time changes in grouting pressure, temperature, displacement, resistance, and flow rate.

2Grouting pump

Grouting pressure0.01~16.0 MPa, adjustable; formation pressure0~25.0 MPaAdjustable.

Traffic indicators:0.01~600mL/minAdjustable.

3Mud storage tank

Pressure 20MPa, volume 2000ml, piston type

4High pressure and high temperature grouting platform, pressure chamber

Core specifications₵120mmx200mm,By wrapping with a specially customized heat-resistant rubber sleeve, simulate the grouting environment and working pressure under different formation pressures and temperatures0-20MPa,Working temperature: room temperature-160℃。

5Manual confining pressure pump

6Fiber optic displacement sensor

Accuracy of 0.001mm, can measure the injection amount, density, etc. of the slurry through displacement sensors

7Constant temperature control system

Used for controlling circuit heating switch display control

8Seepage pump

Provide the seepage pressure during the grouting process and simulate the seepage field in the geological environment. Seepage pressure less than 16.0MPa, seepage pressure0.05~16MPaAdjustable, flow rate0.01~600ml/min

9Resistivity meter

During the process of chemical slurry injection, analyze the changes in environmental resistivity in time and space to obtain the diffusion law of the slurry in the specimen in time and space.

10Using imported SEAT and Senna pressure transmitters to measure pump and seepage pressure, with the number of pressure transmitters4Set.

11constant temperature heating

Simulate the control of formation temperature and isolate it from the periphery for temperature preservation

12Grouting pipeline and process

High pressure slurry injection, equipped with safety control on the pipeline, automatic leakage due to overpressure.

13Coal rock pretreatment

Translate into EnglishCoal rock production using porous media, fractured media, and loose media₵120x200mm

14、Automatic Data Collection and Processing System

Composed of a computer, data acquisition board, and data acquisition and processing software. It can automatically collect real-time changes in pressure and temperature of the grouting system.

7、 Specific parameter description of grouting pump

The system uses imported servo motors, programmable controllers, and intelligent display screens to accurately control the pump's inlet, outlet, speed regulation, pressure regulation, etc. It uses animated demonstrations to indicate the pump's operating status and faults, and displays real-time changes in liquid flow rate, flow rate, and pressure curves. It has a simple and user-friendly human-machine interface.

HSB-1The dual cylinder constant pressure and constant speed pump can work independently on a horizontal bar or in a dual cylinder linkage without interruption. Both horizontal bar and double cylinder work have three working modes: constant pressure, constant current, and tracking, to meet the needs of different customers.

IIItechnical indicators

working pressure:0～12MPa；

Flow regulation range:0.01～600mL/min

Constant current accuracy:±1%F·S；（≤±1ml/min）

Flow display accuracy:0.1mL；

Constant voltage accuracy:±1%F·S;

Pressure display accuracy:0.1MPa；

Single pump capacity:800mLDual pump capacity:800mL×2=1600mL；

Filling time:2min；

power supply220V，50HZ

Power:2.5KW

4、 Operation Guide

The system adopts800×480of7inchTFTTrue ColorLCDAs a monitor, there are interfaces for system operation, real-time curves, user parameter settings, system parameter settings, and about us.

4.1 Start the system

Connect the twin cylinder pump body to the pump control system, first turn on the power switch of the pump body, and then turn on the power of the pump control system if there are no abnormalities. The system starts self checking without any operation and enters the following startup interface.

picture1 HSB-1Dual cylinder constant pressure and constant speed pump startup interface

After displaying the startup interface, click anywhere on the screen to enter the system operation interface.

4.2 system operation

The upper left corner of the system operation interface is the menu bar, the upper right corner is the real-time clock, the left side is the dual cylinder operation animation demonstration area, the right side is the parameter display area, and below it is the status bar.

picture2 System operation interface

Menu bar:There are five optional menus: system operation, real-time curve, user parameters, system parameters, and about us. Click on any menu to switch from the current interface to the corresponding interface.

Real time clock:Real time display of the current 'year month day hour: minute: second'.

Status bar:Indicate the operating status of the system.

Stop ", both cylinders stop running.

'Running', at least one pump body in the twin cylinder is running.

Manual drainage ", single cylinder working mode is selected as the drainage function, and dual cylinder working mode is not displayed.

Manual suction "is selected as the suction function for the single cylinder working mode, while it is not displayed for the dual cylinder working mode.

Animation demonstration area:Real time display of the remaining liquid volume, pressure, inlet and outlet valve status, liquid flow direction, servo status, and alarm information of the dual cylinder chamber.

Please checkXPump power supply ", when the pump body is powered on normally, this information is not displayed;

Overpressure alarm ", the measured pressure in the chamber exceeds the upper limit set by the system;

Remote control in progress... ", displayed during computer communication, click to restore controller control;

The "Start" button is used to set the working mode, pressure, and flow rate, and when clicked, the system runs;

The "Drain" button selects the drain action for single cylinder working mode, but does not display for dual cylinder mode;

The "suction" button selects the suction action for single cylinder working mode, and does not display for dual cylinder mode;

Parameter display areaQuantitatively display the current measured data and set parameters.

Operation mode, displaying the working mode selected by the user;

Set pressure difference, track mode displays the set pressure difference, constant pressureMode display settingThe pressure and constant flow mode display the set flow rate.

Note:Click on the numerical display area in the figure below to display the numeric keypad, which allows for real-time modification of the corresponding parameters set.

Inlet pressure, the tracking mode displays the real-time pressure at the inlet of the pump body, while other modes do not display it;

Current pressure, displayedApump andBThe current pressure of the pump, in unitsMPa；

Actual flow rate, displayedApump andBThe current flow rate of the pump, in unitsml/min;

Remaining liquid volume, displayedApump andBRemaining liquid volume in the pump chamber, unitml；

Current status, displayApump andBThe pump is in tracking, stopping, suction or discharge state;

Accumulated flow, display the total drainage volume, and the "reset" button can clear it to zero.

4.3 real-time curve

Real time curve as shown in the figure3As shown, display separatelyApump andBThe real-time pressure and flow rate of the pump are displayed for a duration of10min.

picture3 Real time curve interface

4.4 user parameters

picture4 User parameter interface1

The user parameter interface allows for the setting of pressure, flow rate, and mode.

Set the pressure, the constant pressure mode operates at this pressure, and the set value cannot exceed the upper pressure limit;

Set the flow rate, the constant flow mode operates at this flow rate, and the set value cannot exceed50ml/min；

Mode selection: This system provides seven working modes,APump constant pressureAPump constant flowBPump constant pressureBPump constant flow is a single pump operating mode,ABPump constant pressureABPump constant flowABPump tracking is a dual cylinder working mode.

picture5 User parameter interface2

Note:Select asABPump tracking mode, display interface as shown in the figure5As shown. Tracking mode requires an external inlet pressure sensor (or4-20mACurrent input connection2、3Set the maximum input pressure (i.e. the upper limit value of the sensor), zero drift of input pressure, and pressure difference.

4.5 system parameters

Select system parameters from the menu and open as shown in the figure6The login interface shown allows users to click cancel and enter the system parameter interface, as shown in the figure7As shown.

picture6 User login interface

The system parameters are set before the product leaves the factory, and users can only browse and cannot perform any operations. Click on any other option in the menu to exit the system parameter interface and display the image8The prompt shows that the user clicks "Yes".

picture7 System parameter interface

picture8 Exit the system parameter prompt interface

4.6 About Us

Provide an explanation to the product manufacturing company, including and.

5、 Fault analysis and troubleshooting

1. When the system starts, it appears as shown in the figure10Please check the prompt shownPLCCommunication cable and power supply with touch screen.

picture10 Communication failure prompt

2. The running interface appears with the message 'Please check'APump power supply "or" Please checkBPump power supply "prompt, please check if the pump has power or the connection of the control cable.

3. An "overpressure alarm" appears on the operating interface, and the pressure inside the pump chamber exceeds the set upper limit. After troubleshooting, click on "change point" to restore normal operation.

6、 Pump handwheel and pin operation

1Electric operation

When operating electrically, the sprocket pin and the large hand wheel pin must be inserted into the pin hole, and the small hand wheel must be disengaged;

2Use the large handwheel to quickly enter and exit the pump

Pull out the pin of the large handwheel and rotate it to quickly move the pump in and out.

3Use a small handwheel to apply pressure

Pull out the sprocket pin, insert the large handwheel pin, and rotate the small handwheel to manually apply pressure.