Device for measuring flow of mine filling paste conveying pipeline

Abstract

The utility model discloses a device for measuring the flow of a conveying pipeline of mine filling paste, which is applied to the conveying pipeline and comprises a transparent measuring window arranged on the side face of the conveying pipeline, and lock catches arranged at the two ends of the transparent measuring window respectively and connected with the conveying pipeline. The laser is used for emitting laser to the transparent measuring window; the CMOS camera is in communication connection with the control module and is used for receiving the laser emitted by the laser through the transparent measuring window, capturing an image of the mine filling paste conveyed in the transparent measuring window through a high-speed lens and sending the captured image to the control module; and the control module comprises an image processor and a controller, and the image processor is used for receiving the image sent by the CMOS camera, processing the image and sending the processed image to the controller so as to obtain the flow of the mine filling paste conveying pipeline. Non-intrusive measurement can be carried out, maintenance is convenient, and flow information of the whole flow field is obtained.

Description

Technical Field

[0001] This utility model relates to the field of mine backfilling engineering technology, and in particular to a device for measuring the flow rate of a pipeline for conveying mine backfill paste. Background Technology

[0002] Existing metering devices for mine filling paste conveying pipelines mainly measure flow rate by installing auxiliary measuring components such as optical fibers inside the pipeline. These auxiliary measuring components have disadvantages such as being invasive and complex to maintain, and can only measure the flow rate in the local area of ​​the auxiliary measuring component, and cannot obtain flow field distribution information. Utility Model Content

[0003] The purpose of this invention is to provide a device for measuring the flow rate of a pipeline for conveying mine filling paste, in order to solve one or more technical problems existing in the prior art, or at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this utility model is to provide a device for measuring the flow rate of a conveying pipeline for mine filling paste, applied to the conveying pipeline, comprising:

[0005] A transparent measuring window is provided on the side of the conveying pipe, and latches are provided at both ends to connect it to the conveying pipe;

[0006] A laser is used to emit laser light into the transparent measurement window;

[0007] A CMOS camera, including a high-speed lens, is communicatively connected to a control module for receiving laser light emitted by the laser through the transparent measuring window and capturing images of mine filling paste conveyed through the transparent measuring window via the high-speed lens, and sending the captured images to the control module.

[0008] The control module includes an image processor and a controller. The image processor is connected to the CMOS camera and the controller, respectively. The image processor is used to receive the image of the mine filling paste being transported through the transparent measuring window sent by the CMOS camera, process the image of the mine filling paste being transported through the transparent measuring window, and send the processed image to the controller, thereby obtaining the flow rate of the mine filling paste transport pipeline.

[0009] Furthermore, the laser includes a semiconductor laser diode and a cylindrical lens group. The semiconductor laser diode emits laser light to the cylindrical lens group, and the cylindrical lens group transmits a continuous laser beam. The cross-section of the continuous laser beam is perpendicular to the axis of the delivery pipe.

[0010] Furthermore, the laser also includes a heat sink disposed on the semiconductor laser diode for heat dissipation of the semiconductor laser diode.

[0011] Furthermore, the laser also includes an adjustable bracket, which is connected to the semiconductor laser diode and the cylindrical lens group, and is used to adjust the angle and height of the continuous laser beam transmitted from the semiconductor laser diode and the cylindrical lens group.

[0012] Furthermore, it also includes a bandpass filter, which is disposed between the high-speed lens and the transparent measurement window, and the wavelength of the laser passing through the bandpass filter is equal to the wavelength of the laser emitted by the laser.

[0013] Furthermore, the CMOS camera also includes a rigid mounting bracket, which is used to adjust the position of the CMOS camera so that the CMOS camera is coaxial with the delivery pipe.

[0014] Furthermore, the control module includes a trigger, which is connected to the CMOS camera and the controller respectively. The controller sends a pulse signal to the trigger, and the trigger controls the period of image capture by the CMOS camera according to the pulse signal sent by the controller.

[0015] Furthermore, it also includes:

[0016] An optical calibration plate for calibrating the CMOS camera;

[0017] The controller includes an optical calibration board interface, which is connected to the CMOS camera and the optical calibration board respectively. The CMOS camera identifies the optical calibration board through the optical calibration board interface.

[0018] Furthermore, it also includes: a human-computer interaction module, connected to the control module, for receiving and displaying the flow rate of the mine filling paste conveying pipeline sent by the control module.

[0019] Furthermore, it also includes a solid-state drive, connected to the control module, for receiving and storing the flow rate of the mine filling paste delivery pipeline sent by the control module.

[0020] The beneficial effects of this invention are as follows: This invention directly displays the molecules in the conveying pipeline through a transparent measuring window. Then, through the combined use of a laser and a CMOS camera, the laser emitted by the laser passes through the transparent measuring window to reach the CMOS camera, allowing the CMOS camera to capture the conveying image of the mineral filling paste molecules in the conveying pipeline. Finally, the flow rate of the conveying pipeline is obtained sequentially through an image processor and a controller. Since the transparent measuring window is located on the side of the conveying pipeline, it does not affect the original conveying process. Locking buckles at both ends facilitate subsequent maintenance without affecting the conveying of the paste. Furthermore, the non-invasive capture of the paste molecule transport in the transparent measuring window using a laser, CMOS camera, and high-speed lens accurately obtains the distribution information of the entire flow field. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a device for measuring the flow rate of a conveying pipeline for mine filling paste according to this utility model;

[0022] Reference numerals: 1. Delivery pipe; 10. Transparent measuring window; 11. Lock; 20. Laser; 21. Adjustable bracket; 30. CMOS camera; 31. Rigid mounting bracket; 40. Bandpass filter; 50. Control module; 51. Image processor; 52. Controller; 53. Trigger; 54. Wireless signal transmitter; 60. Human-machine interaction module; 70. Solid state drive. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and should not be construed as limiting the scope of this invention.

[0024] It should be noted that although functional modules are divided in the diagram, in some cases, the modules can be divided differently from those in the system.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution. If terms such as "first" or "second" are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0026] Reference Figure 1 In some embodiments of this utility model, a device for measuring the flow rate of a conveying pipeline 1 for mine filling paste is applied to the conveying pipeline 1, comprising:

[0027] A transparent measuring window 10 is set on the side of the conveying pipe 1, and a latch 11 is set at both ends to connect to the conveying pipe 1;

[0028] Laser 20 is positioned directly above the delivery pipe 1 and is used to emit laser light into the transparent measuring window 10;

[0029] The CMOS camera 30 is located directly below the conveying pipe 1 and includes a high-speed lens. It is communicatively connected to the control module 50 and is used to receive the laser emitted by the laser 20 through the transparent measuring window 10 and capture images of the mine filling paste being conveyed through the transparent measuring window 10 through the high-speed lens. The captured images are then sent to the control module 50.

[0030] The control module 50 includes an image processor 51 and a controller 52. The image processor 51 is connected to the CMOS camera 30 and the controller 52 respectively. The image processor 51 is used to receive the image of the mine filling paste being transported through the transparent measuring window 10 sent by the CMOS camera 30, process the image of the mine filling paste being transported through the transparent measuring window 10, and send the processed image to the controller 52, thereby obtaining the flow rate of the mine filling paste transport pipeline 1.

[0031] This invention directly visualizes the molecules in the delivery pipe 1 through a transparent measuring window 10. The laser 20 and CMOS camera 30 work together, with the laser emitted by the laser 20 passing through the transparent measuring window 10 to reach the CMOS camera 30, allowing the CMOS camera 30 to capture an image of the delivery of the mine filling paste molecules in the delivery pipe 1. Finally, the flow rate of the delivery pipe 1 is obtained sequentially through an image processor 51 and a controller 52. Since the transparent measuring window 10 is located on the side of the delivery pipe 1, it does not affect the original delivery. Locks 11 at both ends facilitate later maintenance without affecting the delivery of the paste. Furthermore, the non-invasive capture of the paste molecule delivery in the transparent measuring window 10 by the laser 20, CMOS camera 30, and high-speed lens accurately obtains the distribution information of the entire flow field.

[0032] It should be noted that high-speed lenses, which are photographic lenses with an effective aperture ratio exceeding 1:2, have a higher shooting speed. The CMOS camera 30 is a camera that uses a CMOS (Complementary Metal-Oxide-Semiconductor) sensor to convert light into electricity.

[0033] In some embodiments of this utility model, the transparent measuring window 10 is set in the middle section of the conveying pipe 1, with a length of 200mm and a width less than or equal to the circumference of the conveying pipe 1. The material is made of a high-strength transparent composite material and a pressure-resistant tempered glass composite layer structure, with a glass thickness of more than 10mm. It is treated with a wear-resistant, anti-reflective, and scratch-resistant coating, with a light transmittance of ≥92% and a temperature resistance range of -40℃ to 80℃. The locking buckles 11 at both ends are connected by flange sealing rings according to the ISO standard with quick-opening locking buckles 11, which can realize replacement without stopping the machine. The flange sealing rings are made of fluororubber material, which is corrosion-resistant and wear-resistant, ensuring long-term stable operation on site.

[0034] Reference Figure 1 In some embodiments of this utility model, the laser 20 includes a semiconductor laser diode and a cylindrical lens group. The semiconductor laser diode emits laser light to the cylindrical lens group, and the cylindrical lens group transmits a continuous laser beam. The cross-section of the continuous laser beam is perpendicular to the axis of the conveying pipe 1.

[0035] The semiconductor laser diode is connected to the controller 52, and the controller 52 controls the semiconductor laser diode.

[0036] In some embodiments of this utility model, the laser emitted by the semiconductor laser diode has a wavelength of 532nm and an output power of ≤50mW, and the spot width of the continuous laser beam is 10mm and the thickness is 0.2mm.

[0037] In some embodiments of this utility model, the laser 20 further includes a heat sink, which is disposed on the semiconductor laser diode for heat dissipation of the semiconductor laser diode; the laser 20 is encapsulated in an IP65 protection-rated housing to ensure continuous operation in an environment of -20℃ to 60℃.

[0038] Reference Figure 1 In some embodiments of this utility model, the laser 20 further includes an adjustable bracket 21, which is connected to the semiconductor laser diode and the cylindrical lens group to adjust the angle and height of the continuous laser beam transmitted from the semiconductor laser diode and the cylindrical lens group; so that the continuous laser beam accurately illuminates the central area of ​​the measurement window and avoids edge refraction errors.

[0039] Reference Figure 1 In some embodiments of this utility model, the device further includes a bandpass filter 40, which is disposed between the high-speed lens and the transparent measuring window 10. The wavelength of the laser passing through the bandpass filter 40 is equal to the wavelength of the laser emitted by the laser 20.

[0040] In some embodiments of this utility model, the CMOS camera 30 has a resolution of 2MP, the high-speed lens has a focal length of 25mm, the laser 20 emits a laser with a wavelength of 532nm, and the bandpass filter 40 only allows the laser with a wavelength of 532nm to pass through in order to filter out ambient light interference; the camera frame rate is ≥500fps, and the shutter speed can reach 1 / 10000s, ensuring that no motion blur occurs when the paste particles move at high speed.

[0041] Reference Figure 1 In some embodiments of this utility model, the CMOS camera 30 further includes a rigid mounting bracket 31, which is used to adjust the position of the CMOS camera 30 so that the CMOS camera 30 is coaxial with the delivery pipe 1; wherein, the rigid mounting bracket 31 includes a distance translation adjustment mechanism and an angle rotation adjustment mechanism, which facilitates accurate focusing and calibration on site.

[0042] In some embodiments of this utility model, the controller 52 is a field programmable logic controller (PLC controller).

[0043] Reference Figure 1 In some embodiments of this utility model, the control module 50 includes a trigger 53, which is connected to the controller 52 and the CMOS camera 30 respectively. The controller 52 sends a pulse signal to the trigger 53, and the trigger 53 controls the period of image capture of the CMOS camera 30 according to the pulse signal sent by the controller 52. The controller 52 collects the flow pulse signal in the pipeline or sets a timed trigger signal to drive the laser 20 and the CMOS camera 30 to start / stop synchronously, with a trigger delay time ≤1μs.

[0044] In some embodiments of this utility model, it further includes:

[0045] An optical calibration plate, equipped with precision calibration points, is used for calibrating the CMOS camera 30;

[0046] The controller 52 includes an optical calibration board interface, which is connected to the CMOS camera 30 and the optical calibration board. The CMOS camera 30 identifies the optical calibration board through the optical calibration board interface. The controller periodically performs calibration through the optical calibration board interface and the optical calibration board to ensure the accuracy of the device's measurements.

[0047] Reference Figure 1 In some embodiments of this utility model, the control module 50 further includes a wireless signal transmitter 54, which is connected to the controller 52 and is used to receive the flow rate of the mine filling paste conveying pipeline 1 sent by the controller 52, convert the received flow rate into a wireless signal and transmit it to a preset mine information system for centralized management of the conveying pipeline 1 of each mine filling paste.

[0048] Reference Figure 1 In some embodiments of this utility model, the device further includes: a human-machine interaction module 60, which is connected to the control module 50 and is used to receive and display the flow rate of the mine filling paste conveying pipeline 1 sent by the control module 50.

[0049] In some embodiments of this utility model, the human-computer interaction module 60 is a touch screen.

[0050] Reference Figure 1 In some embodiments of this utility model, the device further includes a solid-state drive 70, which is connected to the control module 50 and is used to receive and store the flow rate of the mine filling paste conveying pipeline 1 sent by the control module 50.

[0051] Reference Figure 1 In some embodiments of this utility model, a transparent measuring window 10, 200mm long and 100mm wide, is opened on a steel conveying pipe 1 with a diameter of φ100mm. The transparent measuring window 10 is made of pressure-resistant tempered glass (12mm thick) and high-strength transparent composite material, and is connected to the conveying pipe 1 through a fluororubber flange. A semiconductor laser 20 (wavelength 532nm, power 50mW) and a cylindrical lens group are installed on the outside of the transparent measuring window 10 to form a laser sheet light source. The laser cut surface is 10mm wide and 0.2mm thick, and illuminates the center of the transparent measuring window 10. The camera system uses a 2MP CMOS industrial camera with a lens focal length of 25mm, F / 1.4, and is equipped with a 532nm bandpass filter 40, a frame rate of 500fps, and a shutter speed of 1 / 10000s.

[0052] Before the system is started, the operator first calibrates the camera using an external optical calibration board: the scale target is placed at the measuring window, and a calibration image is acquired to ensure that the calibration error is less than ±0.1mm; then, the trigger 53 synchronously triggers the laser 20 and the camera under each output pulse signal of the grouting pump or a preset timer signal to acquire two frames of continuous laser illumination images; the image processor 51 processes the two frames of continuous laser illumination images and sends them to the controller 52, which obtains the flow rate of the conveying pipe 1 based on the processed images.

[0053] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A device for measuring the flow rate of a pipeline transporting mine filling paste, characterized in that, Used in pipelines, including: A transparent measuring window is provided on the side of the conveying pipe, and latches are provided at both ends to connect it to the conveying pipe; A laser is used to emit laser light into the transparent measurement window; A CMOS camera, including a high-speed lens, is communicatively connected to a control module for receiving laser light emitted by the laser through the transparent measuring window and capturing images of mine filling paste conveyed through the transparent measuring window via the high-speed lens, and sending the captured images to the control module. The control module includes an image processor and a controller. The image processor is connected to the CMOS camera and the controller, respectively. The image processor is used to receive the image of the mine filling paste being transported through the transparent measuring window sent by the CMOS camera, process the image of the mine filling paste being transported through the transparent measuring window, and send the processed image to the controller, thereby obtaining the flow rate of the mine filling paste transport pipeline.

2. The device for measuring the flow rate of a conveying pipeline for mine filling paste according to claim 1, characterized in that, The laser includes a semiconductor laser diode and a cylindrical lens group. The semiconductor laser diode emits laser light into the cylindrical lens group, and the cylindrical lens group transmits a continuous laser beam. The cross-section of the continuous laser beam is perpendicular to the axis of the delivery pipe.

3. The device for measuring the flow rate of a conveying pipeline for mine filling paste according to claim 2, characterized in that, The laser also includes a heat sink disposed on the semiconductor laser diode for heat dissipation of the semiconductor laser diode.

4. The device for measuring the flow rate of a conveying pipeline for mine filling paste according to claim 2, characterized in that, The laser also includes an adjustable bracket, which is connected to the semiconductor laser diode and the cylindrical lens group, and is used to adjust the angle and height of the continuous laser beam transmitted from the semiconductor laser diode and the cylindrical lens group.

5. The device for measuring the flow rate of a conveying pipeline for mine filling paste according to claim 1, characterized in that, It also includes a bandpass filter, which is disposed between the high-speed lens and the transparent measurement window, and the wavelength of the laser passing through the bandpass filter is equal to the wavelength of the laser emitted by the laser.

6. The device for measuring the flow rate of a conveying pipeline for mine filling paste according to claim 1, characterized in that, The CMOS camera also includes a rigid mounting bracket, which is used to adjust the position of the CMOS camera so that the CMOS camera is coaxial with the delivery pipe.

7. The device for measuring the flow rate of a conveying pipeline for mine filling paste according to claim 1, characterized in that, The control module includes a trigger, which is connected to the CMOS camera and the controller respectively. The controller sends a pulse signal to the trigger, and the trigger controls the period of image capture by the CMOS camera according to the pulse signal sent by the controller.

8. The device for measuring the flow rate of a conveying pipeline for mine filling paste according to claim 1, characterized in that, Also includes: An optical calibration plate for calibrating the CMOS camera; The controller includes an optical calibration board interface, which is connected to the CMOS camera and the optical calibration board respectively. The CMOS camera identifies the optical calibration board through the optical calibration board interface.

9. The device for measuring the flow rate of a conveying pipeline for mine filling paste according to claim 1, characterized in that, Also includes: The human-computer interaction module, connected to the control module, is used to receive and display the flow rate of the mine filling paste conveying pipeline sent by the control module.

10. The apparatus for measuring the flow rate of a conveying pipeline for mine filling paste according to claim 1, characterized in that, It also includes a solid-state drive, connected to the control module, for receiving and storing the flow rate of the mine filling paste delivery pipeline sent by the control module.

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