A portable detection device and unblocking method for exposed filling pipe blockage

Abstract

A portable detection device for blockage of an exposed filled pipe, comprising a C-shaped open ring with a plurality of threaded mounting holes, in which an ultrasonic receiving probe and an ultrasonic resonance contact are inserted, the ultrasonic receiving probe and the ultrasonic resonance contact are slidably matched with the outer wall of the pipe; the ultrasonic receiving probe and the ultrasonic resonance contact are both connected to an integrated controller; a method for unblocking blockage of an exposed filled pipe, comprising the following steps: collecting reference data; determining the blockage position; unblocking the blockage: for the blockage position, using the resonance frequency of the corresponding filling material after solidification, starting an ultrasonic variable frequency vibration component and an ultrasonic vibration test component to continuously scan the outer wall of the pipe at the blockage position, and breaking the solids in the pipe until the pipe is unblocked. The device and method do not require any other changes to the original pipe system, and can conveniently detect and unblock the blockage in the pipe.

Description

Technical Field

[0001] The invention relates to a pipeline detection device and a dredging method, in particular to a portable detection device for blockage of an exposed filling pipeline and a dredging method, belonging to the technical field of blockage detection and dredging of exposed filling pipelines. Background Art

[0002] Compared with traditional mining methods, backfill mining has the advantages of reducing the discharge of waste rock, avoiding surface deformation and subsidence, groundwater loss and achieving low-loss mining. It is an environmentally friendly and resource-saving coal mining method with a long-term future.

[0003] However, during the operation of the filling system, the most prominent defect is that the filling efficiency cannot keep up with the resource extraction efficiency, resulting in low filling and extraction efficiency. The reason for the low filling efficiency is not only the filling material itself, such as the hardening of paste and colloid filling materials after filling, but also the blockage of the filling pipeline is another important factor that reduces the filling efficiency. The blockage of the filling pipeline will not only cause construction interruption, but also be time-consuming and laborious to find and clear the blockage point, and it will limit the delivery speed of the filling material to a certain extent.

[0004] Commonly used methods for finding blockages include segmented pipe removal and pressure monitoring. These methods are feasible for short-distance filling pipelines, but they also require overcoming many difficulties. For long-distance filling material transportation pipelines, these methods are more difficult to implement and greatly increase operating costs. Therefore, there is currently no reliable and simple detection device or fast and efficient unblocking method to solve the blockage problem of exposed filling pipelines such as pastes and colloids. Summary of the invention

[0005] In view of the problems existing in the above-mentioned prior art, the present invention provides a portable detection device and unblocking method for blockage of an exposed filling pipe. The device is easy to carry and has intuitive information display. No other changes are required to the original pipe system, and blockages in the pipe can be conveniently detected and unblocked. The unblocking method is simple and easy to operate, and does not interfere with or damage the system integrity of the pipe.

[0006] In order to achieve the above-mentioned object, the present invention provides a portable detection device for blockage of an exposed filling pipe, comprising a C-shaped open ring, the width of the open end of which is not less than the outer diameter of the pipe, and the inner diameter of the open ring is larger than the outer diameter of the pipe; a handle is connected to the lower end of the open ring;

[0007] A plurality of threaded mounting holes are provided on the open ring, an ultrasonic receiving probe is installed in one of the mounting holes, and ultrasonic resonance contacts are installed in the remaining mounting holes respectively, and the ultrasonic receiving probe and the ultrasonic resonance contact are slidably matched with the outer wall of the pipe;

[0008] The integrated controller includes an ultrasonic frequency conversion vibration component, an ultrasonic vibration test component, a built-in controller and a display screen, and the ultrasonic frequency conversion vibration component includes an ultrasonic resonance contact, an ultrasonic vibrator, an ultrasonic generator and an ultrasonic transducer connected in sequence;

[0009] The ultrasonic vibration test assembly includes an ultrasonic receiving probe and a measuring sensor connected in sequence;

[0010] The ultrasonic receiving probe, ultrasonic resonance contact, ultrasonic transducer and measuring sensor are all connected to the built-in controller.

[0011] Furthermore, the ultrasonic vibration test assembly also includes a filter device, and the filter device is connected to the ultrasonic receiving probe.

[0012] Furthermore, three ultrasonic resonance contacts are provided and are evenly spaced along the open ring, and one ultrasonic receiving probe is provided and is located between any two ultrasonic resonance contacts; the ultrasonic resonance contact and the ultrasonic receiving probe are both hemispherical in shape in their parts close to the pipe.

[0013] Furthermore, the measuring sensor is a piezoelectric vibration sensor, which measures a displacement range of 0.001 to 4.000 mm, a velocity range of 0.1 to 400.0 mm / s, and an acceleration range of 0.1 to 400.0 m / s. 2 .

[0014] Furthermore, the vibration frequency of the ultrasonic vibrator in the ultrasonic variable frequency vibration component is 15 Hz to 30 MHz.

[0015] The present invention utilizes the resonance principle, combines the characteristics of ultrasonic frequency band being adjustable, strong penetration, and the frequency being unchanged when ultrasonic waves pass through different media, and arranges an open ring that can be directly mounted on the outside of a pipeline, and inserts an ultrasonic receiving probe and an ultrasonic resonance probe connected to an integrated controller on the open ring for respectively generating and capturing ultrasonic frequencies, and intuitively displays the spectral signal through the display screen of the integrated controller, and determines the blockage position through the different forms of the generated spectral signal segments, thereby providing a reliable basis for accurate dredging. The portable detection device has a simple structure, is easy to operate, has high detection efficiency, and has a good dredging effect, and does not require other changes to the original pipeline system, thereby realizing convenient detection and non-destructive dredging of blockages in the pipeline.

[0016] A method for clearing blockage in an exposed filling pipe comprises the following steps:

[0017] (1) Collecting reference data: Prepare solid samples of various specific filling materials, use the resonance method, start the ultrasonic frequency conversion vibration component to generate ultrasonic waves, and start the ultrasonic vibration test component to receive and display ultrasonic waves, obtain the resonance frequency that causes the solid sample to resonate and record it;

[0018] Simulate the flow environment in the pipe filled with various specific filling materials, use the resonance method, start the ultrasonic frequency conversion vibration component to generate ultrasonic waves, and start the ultrasonic vibration test component to receive and display ultrasonic waves, obtain the excitation frequency that causes the resonance of the fluid in the pipe and record it;

[0019] (2) Determine the blockage position: set the excitation frequency of the fluid resonance measured in step (1) as the excitation frequency of the detection device, start the ultrasonic frequency conversion vibration component and the ultrasonic vibration test component, adjust the frequency of the ultrasonic resonance contact to the excitation frequency value, slide the portable detection device from the opening of the open ring to the outer wall of the pipeline, hold the handle to move the portable detection device, and scan the pipeline for detection;

[0020] The fluid in the pipeline resonates under the action of the excitation frequency of the detection device. The resonance signal is captured by the ultrasonic receiving probe and then converted by the measuring sensor and transmitted to the built-in controller. The display screen displays a large and stable spectrum or amplitude digital signal in real time.

[0021] Continue to move the portable detection device. When the spectrum or amplitude digital signal on the display screen begins to change significantly, that is, the amplitude is no longer stable and decreases, it means that the material in the pipeline of the detected part is no longer a fluid, but a solid that causes blockage. Continue to move and scan until a spectrum or amplitude digital signal with a large and stable amplitude appears on the display screen again. The part between the two spectrum signals with large and stable amplitudes can be determined as the blockage location.

[0022] (3) Clearing blockage: For the blockage position determined in step (2), the ultrasonic variable frequency vibration component and the ultrasonic vibration test component are started using the resonance frequency of the corresponding filling material after solidification obtained in step (1). After adjusting the ultrasonic frequency of the ultrasonic resonance contact to be consistent with the resonance frequency of the filling material after solidification, the outer wall of the pipe at the blockage position is continuously scanned to loosen and break the solids in the pipe. The broken solids are continuously dispersed by the fluid in the pipe until the pipe is cleared.

[0023] Furthermore, in the above-mentioned steps (2) and (3), in order to reduce the resistance between the ultrasonic receiving probe and the ultrasonic resonance contact and the outer wall of the pipeline, the ultrasonic receiving probe and the ultrasonic resonance contact are lubricated before use.

[0024] Furthermore, the ultrasonic receiving probe and the ultrasonic resonance contact can be adjusted in quantity and position according to actual frequency requirements, and the distance between the ultrasonic receiving probe and the ultrasonic resonance contact and the pipeline can be adjusted by deepening or shallowing the distance in the open ring threaded mounting hole.

[0025] This dredging method utilizes the principle that the frequency of sound waves does not change when propagating in different media. By collecting reference data and using the corresponding reference frequency for detection, the blockage location is determined. The resonance method is used to activate the ultrasonic resonance contacts in the detection device to loosen and crush the solids at the blockage location. Under the premise of not causing any damage to the original pipeline system, the pipeline can be dredged quickly and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the detection device in the present invention;

[0027] Figure 2 is a cross-sectional view of the detection device of the present invention;

[0028] Figure 3 It is a schematic diagram of the initial state of blockage dredging;

[0029] Figure 4 It is a schematic diagram of the intermediate state of blockage dredging;

[0030] Figure 5 It is a schematic diagram of the final state of blockage unblocking.

[0031] In the figure: 1. open ring, 2. pipe, 3. handle, 4. mounting hole, 5. ultrasonic receiving probe, 6. ultrasonic resonance contact, 7. integrated controller, 8. display screen. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] like Figure 1 and Figure 2 As shown, a portable detection device for blockage of an exposed filling pipe comprises a C-shaped open ring 1, the width of the open end of which is not less than the outer diameter of the pipe 2, and the inner diameter of the open ring 1 is larger than the outer diameter of the pipe 2; a handle 3 is connected to the lower end of the open ring 1;

[0034] The open ring 1 is provided with a plurality of threaded mounting holes 4, an ultrasonic receiving probe 5 is mounted in one of the mounting holes 4, and ultrasonic resonance contacts 6 are mounted in the remaining mounting holes 4, respectively. The ultrasonic receiving probe 5 and the ultrasonic resonance contact 6 are slidably matched with the outer wall of the pipe 2;

[0035] The integrated controller 7 includes an ultrasonic frequency conversion vibration component, an ultrasonic vibration test component, a built-in controller and a display screen 8, and the ultrasonic frequency conversion vibration component includes an ultrasonic resonance contact 6, an ultrasonic vibrator, an ultrasonic generator and an ultrasonic transducer connected in sequence;

[0036] The ultrasonic vibration test assembly includes an ultrasonic receiving probe 5 and a measuring sensor connected in sequence;

[0037] The ultrasonic receiving probe 5, the ultrasonic resonance contact 6, the ultrasonic transducer and the measuring sensor are all connected to the built-in controller.

[0038] In order to filter out interference waves outside a specific frequency band to improve the ultrasonic frequency receiving accuracy, the ultrasonic vibration test assembly further includes a filtering device, and the filtering device is connected to the ultrasonic receiving probe 5 .

[0039] Preferably, three ultrasonic resonance contacts 6 are provided and are evenly spaced along the open ring 1, and one ultrasonic receiving probe 5 is provided, which is located between any two ultrasonic resonance contacts 6; the ultrasonic resonance contact 6 and the ultrasonic receiving probe 5 close to the pipe 2 are both hemispherical.

[0040] In order to improve the accuracy of vibration testing, the measuring sensor is a piezoelectric vibration sensor, which measures displacement range of 0.001-4.000 mm, velocity range of 0.1-400.0 mm / s, and acceleration range of 0.1-400.0 m / s. 2 .

[0041] In order to ensure the breadth of the frequency adjustment range of the ultrasonic frequency conversion vibration component, the vibration frequency of the ultrasonic vibrator in the ultrasonic frequency conversion vibration component is 15Hz~30MHz.

[0042] The present invention utilizes the resonance principle, combines the characteristics of ultrasonic frequency band being adjustable, strong penetration and the frequency being unchanged when ultrasonic waves pass through different media, and arranges an open ring that can be directly mounted on the outside of a pipeline, and inserts an ultrasonic receiving probe and an ultrasonic resonance probe connected to an integrated controller on the open ring for respectively generating and capturing ultrasonic frequencies, and intuitively displays the spectrum or amplitude digital signal on the display screen of the integrated controller, and determines the blockage position through different forms of the generated spectrum signal segments, thereby providing a reliable basis for accurate dredging. The portable detection device has a simple structure, is easy to operate, has high detection efficiency and good dredging effect, and does not require other changes to the original pipeline system, thereby realizing convenient detection and non-destructive dredging of blockages in the pipeline.

[0043] A method for clearing blockage in an exposed filling pipe comprises the following steps:

[0044] (1) Collecting reference data: Prepare solid samples of various specific filling materials, use the resonance method, start the ultrasonic frequency conversion vibration component to generate ultrasonic waves, and start the ultrasonic vibration test component to receive and display ultrasonic waves, obtain the resonance frequency that causes the solid sample to resonate and record it;

[0045] Simulate the flow environment in the pipe 2 filled with various specific filling materials, use the resonance method, start the ultrasonic frequency conversion vibration component to generate ultrasonic waves, and start the ultrasonic vibration test component to receive and display ultrasonic waves, obtain the excitation frequency that causes the resonance of the fluid in the pipe 2 and record it;

[0046] Regardless of whether it is paste or colloid filling, the material composition and proportions used by different units in different regions are different. The properties of the fluid material and the material after solidification are also different, and the natural vibration frequency is also different. Therefore, the above frequency testing and recording are required.

[0047] (2) Determining the blockage position: setting the excitation frequency of the fluid resonance measured in step (1) as the excitation frequency of the detection device, starting the ultrasonic frequency conversion vibration component and the ultrasonic vibration test component, adjusting the frequency of the ultrasonic resonance contact 6 to the excitation frequency value, sliding the portable detection device to the outer wall of the pipe 2 from the opening of the open ring, holding the handle 3 to move the portable detection device, and scanning the pipe 2 for detection;

[0048] The fluid in the pipe 2 resonates under the action of the excitation frequency of the detection device, and the resonance signal is captured by the ultrasonic receiving probe 5 and transmitted to the built-in controller after conversion by the measuring sensor. The display screen 8 displays a spectrum or amplitude digital signal with a large and stable amplitude in real time;

[0049] Continue to move the portable detection device. When the spectrum or amplitude digital signal on the display screen 8 begins to change, that is, the amplitude is no longer stable and decreases, it means that the material in the pipeline 2 at the detected location is no longer a fluid, but a solid that causes blockage. Continue to move and scan until a spectrum or amplitude digital signal with a large and stable amplitude appears on the display screen 8 again. It can be determined that the portion between the two spectrum signals with large and stable amplitudes is the blockage location.

[0050] (3) Clearing the blockage: For the blockage position determined in step (2), the ultrasonic variable frequency vibration component and the ultrasonic vibration test component are started using the resonance frequency of the corresponding filling material after solidification obtained in step (1). After adjusting the ultrasonic frequency of the ultrasonic resonance contact 6 to be consistent with the resonance frequency of the filling material after solidification, the outer wall of the pipe 2 at the blockage position is continuously scanned to loosen and break the solid in the pipe 2. The broken solid is continuously dispersed by the fluid in the pipe 2 until the pipe 2 is cleared.

[0051] like Figure 3As shown in FIG. 1 , under the state of ultrasonic excitation resonance, the blockage is loosened and begins to break, and the size of the blockage begins to decrease; as shown in FIG. Figure 4 As shown, under the combined effect of resonance and the pressure difference of the pipeline 2 on both sides of the blocking body, the pipeline 2 is unblocked; Figure 5 As shown, the broken small-sized blocks are loosened and move toward the outlet under the impulse of the fluid in the pipeline, and finally the pipeline 2 is completely unblocked.

[0052] In order to obtain the best dredging effect, the ultrasonic resonance contact 6 contacts and dredges the outer wall of the pipe 2 .

[0053] In order to reduce the resistance between the ultrasonic receiving probe 5 and the ultrasonic resonance contact 6 and the outer wall of the pipe 2, in step (2) and step (3), the ultrasonic receiving probe 5 and the ultrasonic resonance contact 6 are lubricated before use.

[0054] The number and position of the ultrasonic receiving probe 5 and the ultrasonic resonance contact 6 can be adjusted according to the actual frequency requirements. The distance between the ultrasonic receiving probe 5 and the ultrasonic resonance contact 6 and the pipeline 2 can be adjusted by screwing deeper or shallower in the open ring threaded mounting hole 4.

[0055] This dredging method utilizes the principle that the frequency of sound waves does not change when propagating in different media, collects reference data to determine the location of the blockage, and uses the resonance method to activate the ultrasonic resonance contacts in the detection device to loosen and crush the solids at the blockage location. This achieves rapid and efficient dredging of the pipeline without causing any damage to the original pipeline system.

Claims

1. A portable detection device for blockage of an exposed filling pipe, characterized in that: It comprises a C-shaped open ring (1), the width of the open end of which is not less than the outer diameter of the pipe (2), and the inner diameter of the open ring (1) is larger than the outer diameter of the pipe (2); the lower end of the open ring (1) is connected to a handle (3); The open ring (1) is provided with a plurality of threaded mounting holes (4), an ultrasonic receiving probe (5) is mounted in one of the mounting holes (4), and ultrasonic resonance contacts (6) are respectively mounted in the remaining mounting holes (4), the ultrasonic receiving probe (5) and the ultrasonic resonance contacts (6) being slidably matched with the outer wall of the pipe (2); The integrated controller (7) comprises an ultrasonic variable frequency vibration component, an ultrasonic vibration test component, a built-in controller and a display screen (8), wherein the ultrasonic variable frequency vibration component comprises an ultrasonic resonance contact (6), an ultrasonic vibrator, an ultrasonic generator and an ultrasonic transducer which are connected in sequence; The ultrasonic vibration test assembly comprises an ultrasonic receiving probe (5) and a measuring sensor connected in sequence; The ultrasonic receiving probe (5), the ultrasonic resonance contact (6), the ultrasonic transducer and the measuring sensor are all connected to the built-in controller.

2. A portable detection device for blockage of an exposed filling pipe according to claim 1, characterized in that: The ultrasonic vibration test assembly also includes a filter device, and the filter device is connected to the ultrasonic receiving probe (5).

3. A portable detection device for blockage of an exposed filling pipe according to claim 1 or 2, characterized in that: The ultrasonic resonance contacts (6) are provided in three numbers and are distributed at equal intervals along the open ring (1); the ultrasonic receiving probe (5) is provided in one number and is located between any two ultrasonic resonance contacts (6); the ultrasonic resonance contacts (6) and the ultrasonic receiving probe (5) are both hemispherical in shape in their parts close to the pipe (2).

4. A portable detection device for blockage of an exposed filling pipe according to claim 3, characterized in that: The measuring sensor is a piezoelectric vibration sensor, which measures displacement range of 0.001-4.000 mm, velocity range of 0.1-400.0 mm / s, and acceleration range of 0.1-400.0 m / s. 2 .

5. A portable detection device for blockage of an exposed filling pipe according to claim 3, characterized in that: The vibration frequency of the ultrasonic vibrator in the ultrasonic frequency conversion vibration component is 15Hz-30MHz.

6. A method for clearing blockage in an exposed filling pipe using the portable detection device for blockage in an exposed filling pipe according to any one of claims 1 to 5, characterized in that: The steps include: (1) Collecting reference data: Prepare solid samples of various specific filling materials, use the resonance method, start the ultrasonic frequency conversion vibration component to generate ultrasonic waves, and start the ultrasonic vibration test component to receive and display ultrasonic waves, obtain the resonance frequency that causes the solid sample to resonate and record it; Simulating the flow environment in the pipe (2) filled with various specific filling materials, using the resonance method, starting the ultrasonic frequency conversion vibration component to generate ultrasonic waves, and simultaneously starting the ultrasonic vibration test component to receive and display ultrasonic waves, so as to obtain and record the excitation frequency that causes the resonance of the fluid in the pipe (2); (2) Determining the blockage position: setting the excitation frequency of the fluid resonance measured in step (1) as the excitation frequency of the detection device, starting the ultrasonic frequency conversion vibration component and the ultrasonic vibration test component, adjusting the frequency of the ultrasonic resonance contact (6) to the excitation frequency value, sliding the portable detection device from the opening of the open ring (1) to the outer wall of the pipeline (2), holding the handle (3) to move the portable detection device, and scanning the pipeline (2); The fluid in the pipe (2) resonates under the action of the excitation frequency of the detection device, and the resonance signal is captured by the ultrasonic receiving probe (5) and transmitted to the built-in controller after being converted by the measuring sensor. The display screen (8) displays a spectrum or amplitude digital signal with a large and stable amplitude in real time; Continue to move the portable detection device. When the spectrum or amplitude digital signal on the display screen (8) begins to show obvious and large changes, that is, the amplitude is no longer stable and decreases, it means that the material in the pipe (2) at the detected part is no longer a fluid, but a solid that causes blockage. Continue to move and scan until a spectrum or amplitude digital signal with a large and stable amplitude appears on the display screen (8) again. It can be determined that the part between the two segments of the spectrum or amplitude digital signal with a large and stable amplitude is the blockage location. (3) Clearing the blockage: For the blockage position determined in step (2), the ultrasonic variable frequency vibration component and the ultrasonic vibration test component are started using the resonance frequency of the corresponding filling material after solidification obtained in step (1), and the ultrasonic frequency of the ultrasonic resonance contact (6) is adjusted to be consistent with the resonance frequency of the filling material after solidification, and then the outer wall of the pipe (2) at the blockage position is continuously scanned to loosen and break the solid in the pipe (2), and the broken solid is continuously dispersed by the fluid in the pipe (2) until the pipe (2) is cleared.

7. A method for clearing blockage in an exposed filling pipe according to claim 6, characterized in that: In the steps (2) and (3), the ultrasonic receiving probe (5) and the ultrasonic resonance contact (6) are lubricated.

8. A method for clearing blockage in an exposed filling pipeline according to claim 6 or 7, characterized in that: The ultrasonic receiving probe (5) and the ultrasonic resonance contact (6) can be adjusted in number and position according to actual frequency requirements, and the distance between the ultrasonic receiving probe (5) and the ultrasonic resonance contact (6) and the pipe (2) can be adjusted by screwing them deeper or shallower in the threaded mounting hole (4) of the open ring (1).

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