Device for monitoring and processing filling pipe blockage based on circuit on-off

Abstract

The application discloses a device for monitoring and processing filling pipeline blockage based on circuit on-off, which comprises a monitoring pipeline, a monitoring mechanism, a pipeline blockage monitoring circuit and a jet processing device; the monitoring mechanism is installed below the monitoring pipeline; two copper sheets are arranged on the top surface of the monitoring mechanism, two wires are led out from the copper sheets to connect a power supply and form the pipeline blockage monitoring circuit; the pipeline blockage monitoring circuit is connected with the jet processing device; a certain proportion of magnetite sand is added into filling slurry; when the pipeline is blocked, the magnetic attraction force at the bottom of the pipeline gradually increases; when the magnetic attraction force is greater than the gravity of the small iron block in the monitoring mechanism, the small iron block is attracted; at this time, the small iron block is connected with the circuit fixed on the shell of the monitoring mechanism, so that the PC computer sends a control instruction to the PLC, and the PLC controls the jet processing device to process the pipeline blockage problem. The device has simple structure and convenient installation, can greatly save the cost of pipeline flushing, and improves the operation efficiency of filling operation and the service life of the pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to a device for monitoring and processing filling pipeline blockage based on circuit on-off, belonging to the field of monitoring and processing of mine filling pipeline blockage. BACKGROUND

[0002] Coal resources in China are widely distributed and have large reserves, which is the main mineral energy in China. Usually, most of the coal resources are distributed in the soil buried deep, especially the "three-under" pressure coal under villages, railways and water bodies, which needs to use the coal mining method of filling mining for mining. Cemented filling mining is a green and environmentally friendly mining method. In the process of mining, the mixed filling slurry is pumped to the goaf through the pipeline, and after curing, the filling body changed by the slurry can support the overburden, ensuring the stability of the goaf. However, during pumping, the filling slurry is prone to segregation and precipitation, especially at long straight transportation, the density of the slurry at the bottom of the pipeline continues to increase, and after long-term accumulation, it is prone to pipe blockage, which can cause pipe explosion and other problems, causing significant economic losses. Therefore, in order to ensure the safe operation of mine filling operation, it is necessary to monitor the pipeline at long straight transportation, judge whether the slurry has segregation and precipitation, and immediately make corresponding treatment to prevent pipe blockage.

[0003] At present, there have been some researches on filling pipeline monitoring, usually using pressure sensors and flow meters for monitoring. Chinese patent CN201810682249.3 discloses a device and method for measuring the pressure along the filling pipeline in a mine, which is installed at the inlet of the filling pipeline and enters the pipeline with the slurry, which can measure the pressure in the pipeline in real time and obtain the pressure distribution at different positions in the pipeline. In addition, there are non-destructive monitoring devices installed outside the pipeline. Chinese patent CN201911075805.1 discloses a filling pipeline blockage detection device and method, which mainly uses ultrasonic sensors for detection. An ultrasonic generator is installed at one end of the pipeline to be detected, and multiple ultrasonic sensors are arranged at equal intervals along the outer wall of the pipeline to be detected from the installation point of the ultrasonic generator, and receive the transmitted waves. By adjusting the interval of the ultrasonic waves, it can be judged whether the pipeline is blocked. Although this method can realize the monitoring of the filling pipeline and meet the needs of coal mine site monitoring, it is not convenient for large-scale promotion due to low monitoring accuracy and high monitoring cost.

[0004] In addition, there is also a method of using a high-pressure pump to clean the filling pipeline. Chinese patent CN113738440 discloses a processing method and device for paste filling pipeline, which uses high-pressure wind to dredge the blocked filling pipeline, then drains and cleans the filling pipeline and discharges water into a sedimentation tank, and finally cleans the filled filling pipeline using high-pressure wind. Such a method can treat the pipe blockage to some extent, but increasing the pumping force of such a method will cause some wear to the pipeline, and a more complex solution device will increase the cost of pipe blockage treatment, and the promotion is limited to some extent.

[0005] Therefore, it is necessary to innovate and improve the pipeline monitoring link in the filling operation. The present application designs a new device and method for monitoring and processing filling pipeline blockage based on circuit on-off, which can reduce the monitoring cost, improve the response speed, and process the pipe blockage position, effectively and comprehensively solve the filling pipeline blockage problem. SUMMARY

[0006] The present application aims to provide a device and method for monitoring and processing filling pipeline blockage based on circuit on-off, which can monitor the operation of the filling pipeline, accurately locate the pipe blockage position and make corresponding treatment.

[0007] The principle of the present application is that the filling slurry is prone to segregation and sedimentation during transportation, and the density of the slurry at the bottom of the pipeline gradually increases. The monitoring mechanism is connected with the pipe blockage monitoring circuit, and whether the pipeline is blocked is determined according to the on-off of the circuit. A certain proportion of magnetite sand is added to the filling slurry, and when the pipeline is blocked, the magnetic attraction at the bottom of the pipeline gradually increases, and when the magnetic attraction is greater than the weight of the small iron block in the monitoring mechanism, the small iron block will be attracted up; at this time, the small iron block connects the circuit fixed on the outer shell of the monitoring mechanism, so that the power supply starts to supply power to the PC computer, PLC and jet processing device; the PC computer sends a control instruction to the PLC, and the PLC controls the jet processing device to start working, so that the slurry deposited at the bottom of the pipeline is reactivated to prevent pipe blockage. As the density of the slurry accumulated at the bottom of the pipeline gradually decreases, the magnetic attraction gradually decreases; when the magnetic attraction is less than the weight of the small iron block, the small iron block falls down, the circuit is disconnected, and the power supply stops supplying power.

[0008] The present application provides a device for monitoring and processing filling pipeline blockage based on circuit on-off, which comprises a monitoring pipeline, a monitoring mechanism, a pipe blockage monitoring circuit and a jet processing device.

[0009] In the application, the device for monitoring and treating the blockage of the filling pipeline based on the on-off of the circuit is uniformly and continuously arranged on the long-distance horizontal linear transportation path in the goaf, which can accurately locate the pipeline blockage position and timely treat it. The monitoring pipeline is arranged on the long-distance horizontal linear transportation pipeline, and the monitoring mechanism is installed below the monitoring pipeline and connected through a hook. Two copper sheets are arranged on the top inside of the monitoring mechanism, and two wires are connected to the power supply to control the on-off of the blockage monitoring circuit. The blockage monitoring circuit is connected to the air jet treatment device to realize the monitoring and blockage treatment of the filling pipeline.

[0010] The monitoring mechanism is a cuboid structure, including a monitoring mechanism shell, copper sheets and small iron blocks. The two copper sheets are arranged on both sides of the top plate of the monitoring mechanism shell and are not connected in the middle. A small iron block is arranged in the monitoring mechanism, which will be attracted or dropped in the monitoring mechanism due to different magnetic forces. The monitoring mechanism is connected with the blockage monitoring circuit, and whether the pipeline is blocked is determined according to the on-off of the circuit. The copper sheets on both sides of the monitoring mechanism are connected with two wires leading out of the monitoring mechanism shell and connected with the power supply to control the on-off of the blockage monitoring circuit.

[0011] The above-mentioned blockage monitoring circuit is composed of a power supply, a PC computer and a PLC. The power supply is connected with the PC computer and the PLC. When the small iron block in the monitoring mechanism is attracted, the circuit where the power supply is located is turned on, and power supply to it starts. The PC computer is connected with the PLC to control the start and stop of the PLC. The PLC is connected with the air jet treatment device to control the air jet treatment device to realize the treatment of pipeline blockage.

[0012] The air jet treatment device is installed at the bottom of the position where the blockage problem of the monitoring pipeline is prone to occur. The air jet treatment device is arranged below the monitoring pipeline and includes an air jet pipeline, an air jet valve, an air jet hole and a blockage prevention cover. The air jet pipeline is provided with an air jet hole at the top end, and the top of the air jet hole is provided with a blockage prevention cover. Further, the blockage prevention cover is fixed to one end of the air jet hole through a blockage prevention cover rotating shaft to control the opening and closing of the air jet hole. The air jet pipeline is provided with an air jet valve at the lower part to control the ejection of gas.

[0013] In the above-mentioned device, two rows of air jet treatment devices are arranged on the outside of the monitoring pipeline, arranged at a position deviated by 45° along the center line of the pipeline cross section to both sides, and installed along the slurry conveying direction at an angle of 45°, which can jet air along the slurry conveying direction.

[0014] In the above-mentioned device, the top of the air jet hole is provided with a blockage prevention cover, and the rotating shaft of the blockage prevention cover is fixed to one end in the slurry conveying direction, which can be opened and closed along the rotating shaft during the air jet operation. After the air jet is completed, the water flow pressure of the transported slurry can cover the blockage prevention cover on the air jet hole again to prevent the air jet hole from being blocked by the slurry. A plurality of air jet treatment devices are installed side by side on both sides of the outside of the monitoring pipeline, and the air jet valves are connected in series through a circuit.

[0015] In the device, the monitoring pipeline is arranged in a long-distance straight conveying section and is combined by multiple pipeline sections with equal length, facilitating installation and later maintenance and replacement of the pipeline and saving cost. In order to ensure monitoring accuracy, the length of each monitoring pipeline section can be between 10-20 meters, the inner radius of the pipeline is 8 cm, and the pipeline thickness is 2 cm. Further, the monitoring pipeline sections are connected by flanges, long screws are used to pass through the flanges of two adjacent pipeline sections, and are fixed by bolts.

[0016] In the device, according to the design size of the pipeline, the added magnetite sand accounts for 30%-40%, and a small iron block with a mass of 20-30 grams can realize monitoring of pipeline blockage. Different industries can adjust the proportion of added magnetite sand according to the requirements of the conveying slurry to ensure that the magnetic force F generated by the accumulation of magnetic substances when the pipeline is blocked is greater than the gravity G of the small iron block. 磁吸力 小铁块 That is.

[0017] In the device, four fixed hooks are arranged at the bottom end of the monitoring pipeline for fixing the monitoring mechanism, and four hook rings are arranged at the top of the monitoring mechanism for connecting the four fixed hooks of the monitoring pipeline.

[0018] In the device, two copper sheets are arranged at the top end of the monitoring mechanism shell, and the two copper sheets are arranged on the two sides of the top surface and are not connected between them. Influenced by the blocked pipeline, the small iron block is attracted upward to the middle position between the two copper sheets in the monitoring mechanism, i.e. connecting the two copper sheets to make the blocked pipeline monitoring circuit conductive.

[0019] In the device, the small iron block is freely movable in the monitoring mechanism. When the slurry in the pipeline is blocked, the magnetic force F 磁吸力 > G 小铁块 = m 小铁块 · g, G 小铁块 represents the gravity of the small iron block, m 小铁块 represents the mass of the small iron block, F 磁吸力 represents the magnetic force that can be generated by the accumulation of magnetic substances, and g represents the acceleration of gravity; the small iron block is attracted to the top surface in the monitoring mechanism; when the slurry in the pipeline is running normally, the magnetic force F 磁吸力 < G 小铁块 , the small iron block falls to the bottom surface in the monitoring mechanism.

[0020] In the device, the specifications of the monitoring mechanism can be set according to the specific requirements of the industry, considering the slurry ratio, pipeline parameters and monitoring parameters to ensure that the magnetic force when the pipeline is blocked in the required environmental conditions is greater than the gravity of the small iron block, and the small iron block is attracted.

[0021] In the device, the materials of the monitoring pipeline, the monitoring mechanism shell and the monitoring mechanism shell hook are mainly non-magnetic material acrylic, avoiding the influence of ferromagnetic materials on the monitoring effect and monitoring accuracy.​

[0022] The application provides a method for monitoring and treating pipe blockage by using the device, comprising the following steps:

[0023] S1: install the monitoring mechanism below the monitoring pipe, connect the four hooks at the bottom of the monitoring pipe with the four hook rings outside the top surface of the monitoring mechanism shell, fix the monitoring mechanism, connect the wires led out by the two copper sheets inside the top surface of the monitoring mechanism shell with the power supply, connect the power supply with the PC computer, PLC and the air jet treatment device respectively, provide power for them, and form a pipe blockage monitoring circuit;

[0024] S2: install the air jet treatment device at a position where the pipe cross section is deflected by 45 degrees along the center line to both sides, and arrange the air jet treatment device to be inclined by 45 degrees along the slurry conveying direction, so that the air jet treatment device can jet air along the slurry conveying direction, and the air jet treatment device is installed on both sides of the monitoring pipe respectively; connect the PC computer with the PLC, connect the PLC with a plurality of air jet valves, and connect the air jet valves in series;

[0025] S3: add magnetite sand to the filling slurry, so that the proportion of the magnetite sand is 30%-40%, and put a small iron block with a mass of 20-30 grams into the monitoring mechanism, so as to ensure that when the slurry is separated, the magnetic force increases to suck up the small iron block; when the pipe starts filling operation, whether the pipe is blocked can be determined according to the on-off of the circuit, and the pipe blockage is treated;

[0026] S4: when the slurry is separated, the slurry density accumulated at the bottom of the pipe gradually increases, the accumulation of the magnetite sand leads to an increase in the magnetic force, and when the slurry in the pipe is blocked to make the magnetic force F 磁吸力 >G 小铁块 , the small iron block is sucked to the inner top surface of the monitoring mechanism and connects the power supply circuit of the two copper sheets, and the power supply starts to supply power to the PC computer, PLC and air jet treatment device; the PC computer is connected and sends a start signal to the PLC, the PLC controls the air jet treatment device to start jetting air to treat the pipe blockage;

[0027] S5: with the continuous treatment of the air jet treatment device, the slurry accumulation at the bottom of the pipe gradually decreases, and the magnetic force also gradually decreases; when the slurry in the pipe returns to normal operation, the magnetic force F 磁吸力 <G 小铁块 of the small iron block is less than its own gravity and falls down, at this time, the power supply circuit is disconnected, the power supply stops supplying power to the PC computer, PLC and air jet treatment device, and the pipe blockage treatment is completed;

[0028] S6: when the pipe blockage occurs again, repeat steps S4 and S5 to realize closed-loop control of pipe monitoring and pipe blockage treatment.

[0029] The application has the following beneficial effects:

[0030] (1) This invention provides a device and method for monitoring and handling blockages in filling pipes based on circuit continuity monitoring. It can determine the blockage by monitoring the continuity of the circuit. This method is low in cost and high in accuracy. It can accurately locate the blockage position and is designed with an air jet treatment device to treat the blockage position with air jets, thus solving the problem of difficult blockage in filling pipes.

[0031] (2) The device and method can save a lot of costs in cleaning pipelines, improve the service life of pipelines and the operating efficiency of filling operations, and are of great significance in monitoring and treating pipeline blockage. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the device for monitoring and treating blockages in filling pipes based on circuit continuity monitoring in this invention.

[0033] Figure 2 This is a plan view of the device for monitoring and treating blockages in filling pipes based on circuit continuity monitoring in this invention.

[0034] Figure 3 This is a schematic diagram of the circuit for monitoring the unblocked state of a pipeline in this invention.

[0035] Figure 4 This is a schematic diagram of the circuit for monitoring the blockage status of pipelines in this invention.

[0036] Figure 5 This is a cross-sectional view of the monitoring pipeline in this invention. (a) shows the non-working state; (b) shows the working state.

[0037] Figure 6 This is a schematic diagram of the connection between the jet processing device and the monitoring pipeline in this invention. (a) is the non-operating state; (b) is the operating state.

[0038] In the diagram: 1 is the monitoring pipe, 2 is the outer casing of the monitoring mechanism, 3 is the copper sheet, 4 is the hook, 5 is the fixing hook, 6 is the small iron block, 7 is the jet treatment device, 8 is the power supply, 9 is the PC computer, 10 is the PLC, 11 is the flange, 12 is the long screw, 13 is the bolt, 14 is the monitoring circuit, 15 is the jet valve, 16 is the jet pipe, 17 is the anti-clogging cover, 18 is the clogging slurry, 19 is the anti-clogging cover rotating shaft, and 20 is the jet hole. A is the direction of signal transmission and control, B is the direction of power supply, and C is the direction of slurry flow. Detailed Implementation

[0039] like Figures 1-6 As shown, the present invention provides a device for monitoring and handling blockages in filling pipes based on circuit continuity monitoring, including a monitoring pipe, a monitoring mechanism, a blockage monitoring circuit, and an air jet treatment device;

[0040] The device for monitoring and treating the blockage of the filling pipeline based on the on-off of the circuit is uniformly and continuously arranged on the long-distance horizontal linear transportation path in the goaf, and can accurately locate the pipeline blockage position and timely treat it.

[0041] The monitoring mechanism is a cuboid structure, and comprises a monitoring mechanism shell 2, copper sheets 3 and small iron blocks 6. The two copper sheets 3 are arranged on the two sides of the top plate of the monitoring mechanism shell 2 and are not connected in the middle. A small iron block 6 is arranged in the monitoring mechanism and will be attracted or dropped in the monitoring mechanism due to different magnetic forces. The monitoring mechanism is connected with the pipeline blockage monitoring circuit 14, and whether the pipeline is blocked is determined according to the on-off of the circuit. The copper sheets 3 on the two sides of the monitoring mechanism are connected with two wires and are led out of the monitoring mechanism shell 2 and connected with the power supply 8 to form the pipeline blockage monitoring circuit 14.

[0042] The pipeline blockage monitoring circuit comprises the power supply 8, a PC computer 9 and a PLC 10. The power supply 8 is connected with the PC computer 9 and the PLC 10. When the small iron block 6 in the monitoring mechanism is attracted, the circuit in which the power supply 8 is located is turned on, and the power supply starts to supply power. The PC computer 9 is connected with the PLC 10 to control the start and stop of the PLC. The PLC is connected with the jet treatment device to control the jet treatment device to treat the pipeline blockage.

[0043] The jet treatment device is installed at the bottom of the position where the pipeline blockage problem is prone to occur. The jet treatment device is arranged below the monitoring pipeline 1 and comprises a jet pipeline 16, a jet valve 15, a jet hole 20 and a blockage prevention cover 17. The jet hole 20 is arranged at the top end of the jet pipeline 16, and the blockage prevention cover 17 is arranged at the top of the jet hole 20 (see Figure 6 The blockage prevention cover is fixed at one end of the jet hole through a blockage prevention cover rotating shaft 19 and is used for controlling the opening and closing of the jet hole. The jet valve 15 is arranged at the lower part of the jet pipeline 16 and is used for controlling the jet of the gas.

[0044] In the device, two rows of jet treatment devices are arranged outside the monitoring pipeline and are arranged at positions where the pipeline cross section is deflected by 45° along the center line to the two sides, as shown in Figure 5 The jet treatment devices are installed along the slurry conveying direction at an angle of 45°, and can jet the gas along the slurry conveying direction, as shown in Figure 1

[0045] ​The top of the air injection hole is provided with a blockage prevention cover, the rotating shaft of the blockage prevention cover is fixed at one end in the slurry conveying direction, and the blockage prevention cover can be opened and closed along the rotating shaft during air injection operation; the water flow pressure of the slurry conveying pipe after the air injection is completed can be used to cover the blockage prevention cover on the air injection hole again, so that the air injection hole is prevented from being blocked by the slurry entering the air injection hole. A plurality of air injection treatment devices are installed side by side on the outside of the monitoring pipeline on both sides, and the air injection valves are connected in series through an electric circuit.

[0046] In the device, the monitoring pipeline is arranged in a long-distance straight conveying section and is composed of multiple pipeline sections with equal lengths, which facilitates the installation and later maintenance and replacement of the pipeline and saves costs. In order to ensure monitoring accuracy, the length of each monitoring pipeline section can be between 10-20 meters, the inner radius of the pipeline is 8 cm, and the pipeline thickness is 2 cm. Further, the monitoring pipelines are connected through flanges, long screws are used to pass through the flanges of two adjacent pipeline sections, and bolts are used for fixation.

[0047] In the device, according to the design size of the pipeline, 30%-40% of magnetite sand is added, and a small iron block with a mass of 20-30 grams can realize monitoring of pipeline blockage. Different industrial and mining enterprises can adjust the proportion of added magnetite sand according to the requirements of the conveyed slurry to ensure that the magnetic force F generated by the accumulation of magnetic substances when the pipeline is blocked is greater than the gravity G of the small iron block. 磁吸力 小铁块 That is.

[0048] In the device, four fixed hooks 5 are arranged at the bottom end of the monitoring pipeline for fixing the monitoring mechanism, and four hook rings 4 are arranged at the top of the monitoring mechanism for connecting the four fixed hooks 5 of the monitoring pipeline.

[0049] In the device, two copper sheets 3 are arranged at the top end of the monitoring mechanism, and the two copper sheets are arranged on both sides of the top surface and are not connected between them. Influenced by the pipeline blockage, the small iron block is attracted upward to the middle position between the two copper sheets in the monitoring mechanism, i.e., the small iron block connects the two copper sheets to make the pipeline blockage monitoring circuit conductive.

[0050] In the device, the small iron block 6 is freely movable in the monitoring mechanism. When the slurry in the pipeline is blocked, the magnetic force F 磁吸力 > G 小铁块 = m 小铁块 · g, G 小铁块 represents the gravity of the small iron block, m 小铁块 represents the mass of the small iron block, F 磁吸力 represents the magnetic force that can be generated by the accumulation of magnetic substances, and g represents the acceleration of gravity; the small iron block is attracted to the top surface in the monitoring mechanism; when the slurry in the pipeline is running normally, the magnetic force F 磁吸力 < G 小铁块 , the small iron block falls to the bottom surface in the monitoring mechanism.

[0051] ​In the device, the specifications of the monitoring mechanism can be set according to specific requirements of the industry and mine, and the slurry ratio, pipeline parameters and monitoring parameters need to be considered to ensure that the magnetic attraction force is greater than the gravity of the small iron block under the required environmental conditions when the pipeline is blocked, and the small iron block can be attracted.

[0052] In the device, the materials of the monitoring pipeline, the monitoring mechanism shell and the monitoring mechanism shell hook are mainly non-magnetic materials such as acrylic, to avoid the influence of ferromagnetic materials on the monitoring effect and monitoring accuracy.

[0053] The embodiment provides a method for monitoring and processing filling pipeline blockage by using the device, including the following steps:

[0054] S1: install the monitoring mechanism below the monitoring pipeline, connect the four fixed hooks 5 at the bottom of the monitoring pipeline with the four hook rings 4 outside the top surface of the monitoring mechanism shell, fix the monitoring mechanism, connect the wires led out from the two copper sheets 3 inside the top surface of the monitoring mechanism shell to the power supply, connect the power supply to the PC computer, PLC and jet processing device respectively, and provide electric energy for them to form a blocked pipeline monitoring circuit;

[0055] S2: install the jet processing device at a position where the pipeline cross section is deflected by 45° along the center line to both sides, as shown in Figure 5 ; and arrange it at an angle of 45° along the slurry conveying direction, which can jet along the slurry conveying direction, as shown in Figure 1 , and is installed on both sides of the monitoring pipeline; the PC computer is connected to the PLC, the PLC is connected to a plurality of jet valves, and the jet valves are connected in series;

[0056] S3: add magnetite sand to the filling slurry, so that the weight ratio of the magnetite sand is about 30%, and put a small iron block with a mass of 25 grams into the monitoring mechanism, to ensure that when the slurry is separated, the magnetic attraction force can increase to attract the small iron block;

[0057] According to the object gravity calculation formula G 小铁块 =m 小铁块 ·g, the gravity of the small iron block is about 0.25N, and the magnetic attraction force generated when the slurry is running normally is about 0.15N; when the pipeline starts filling operation, whether the pipeline is blocked can be determined according to the on-off of the circuit, and the blocked pipeline condition can be processed;

[0058] S4: when the slurry is separated, the slurry density accumulated at the bottom of the pipeline gradually increases, the accumulation of magnetite sand leads to an increase in magnetic attraction force, and the magnetic attraction force gradually increases from 0.15N; when the slurry in the pipeline is blocked, the magnetic attraction force F 磁吸力 >G 小铁块= 0.25N, the small iron block is attracted to the top surface inside the monitoring mechanism, and is connected to the power supply circuit with the two copper sheets, the power supply will start to supply power to the PC computer, PLC and the air jet processing device; the PC computer is connected to and sends a start signal to the PLC, the PLC controls the air jet processing device to start air jetting, and the pipe blockage is processed;

[0059] S5: With the continuous processing of the air jet processing device, the accumulation of the slurry at the bottom of the pipe gradually decreases, and the magnetic attraction force also gradually decreases; when the slurry in the pipe returns to normal operation, the magnetic attraction force F 磁吸力 <G 小铁块 = 0.25N, the small iron block is attracted to the top surface inside the monitoring mechanism, and is connected to the power supply circuit with the two copper sheets, the power supply will start to supply power to the PC computer, PLC and the air jet processing device; the PC computer is connected to and sends a start signal to the PLC, the PLC controls the air jet processing device to start air jetting, and the pipe blockage is processed;

[0060] S6: When the pipe blockage phenomenon occurs again, repeat steps S4 and S5 to realize closed-loop control of pipe monitoring and pipe blockage processing.

Claims

1. A device for monitoring and handling filling pipe blockages based on circuit break, characterized in that: The monitoring pipeline, the monitoring mechanism, the pipeline blockage monitoring circuit and the jet processing device are included. The monitoring pipeline is arranged on a long-distance horizontal straight pipeline, and the monitoring mechanism is installed below the monitoring pipeline and connected through a hook. Two copper sheets are arranged on the top inner side of the monitoring mechanism, and two wires are drawn out to connect the power supply to control the on-off of the pipeline blockage monitoring circuit. The pipeline blockage monitoring circuit is connected with the jet processing device to realize the monitoring and pipeline blockage processing of the filling pipeline. The monitoring mechanism has a cuboid structure, and includes a monitoring mechanism shell, copper sheets and small iron blocks. The two copper sheets are arranged on the two sides of the top plate of the monitoring mechanism shell and are not connected in the middle. A small iron block is arranged in the monitoring mechanism and will be attracted or dropped in the monitoring mechanism due to different magnetic forces. The monitoring mechanism is connected with the pipeline blockage monitoring circuit. The copper sheets on the two sides of the monitoring mechanism are connected with two wires drawn out of the monitoring mechanism shell and connected with the power supply to control the on-off of the pipeline blockage monitoring circuit. Whether the pipeline is blocked is determined according to the on-off of the circuit. The pipeline blockage monitoring circuit is composed of a power supply, a PC computer and a PLC. The power supply is connected with the PC computer and the PLC. When the small iron block in the monitoring mechanism is attracted, the circuit where the power supply is located is turned on to start power supply. The PC computer is connected with the PLC to control the start and stop of the PLC. The PLC is connected with the jet processing device to control the jet processing device to realize the processing of pipeline blockage.

2. The apparatus for monitoring and processing filling pipe blockage based on circuit on-off according to claim 1, characterized in that: The jet processing device is arranged below the monitoring pipeline and includes a jet pipeline, a jet valve, a jet hole and an anti-blocking cover. The jet pipeline is provided with a jet hole at the top end, and the top of the jet hole is provided with an anti-blocking cover. The anti-blocking cover is fixed to one end of the jet hole through an anti-blocking cover rotating shaft to control the opening and closing of the jet hole. The lower part of the jet pipeline is provided with a jet valve to control the jet of gas.

3. The apparatus for monitoring and processing filling pipe blockage based on circuit on-off according to claim 2, characterized in that: A plurality of jet processing devices are installed side by side on the two sides of the outside of the monitoring pipeline at the positions where the pipeline cross section is deflected by 45° along the center line to the two sides and are installed at an angle of 45° along the slurry conveying direction to be able to jet along the slurry conveying direction. The jet valves are connected in series through a circuit. The rotating shaft of the anti-blocking cover is fixed to one end in the slurry conveying direction, and the anti-blocking cover can be opened and closed along the rotating shaft during jet operation. After the jet is finished, the water flow pressure of the transported slurry can cover the anti-blocking cover on the jet hole to prevent the jet hole from being blocked by entering the slurry.

4. The apparatus for monitoring and processing filling pipe blockage based on circuit on-off according to claim 1, characterized in that: The monitoring pipeline is arranged on a long-distance straight conveying section and is composed of multiple pipeline sections with equal lengths. The length of each monitoring pipeline section is 10-20 meters, the inner radius of the pipeline is 8 cm, and the pipeline thickness is 2 cm. The monitoring pipelines are connected through flanges. Long screws are used to pass through the flanges of two adjacent pipeline sections and are fixed through bolts.

5. The apparatus for monitoring and processing filling pipe blockage based on circuit on-off according to claim 1, characterized in that: Four fixed hooks are arranged at the bottom end of the monitoring pipeline to fix the monitoring mechanism. Four hook rings are arranged at the top of the monitoring mechanism to connect the four fixed hooks of the monitoring pipeline.

6. A method for monitoring and processing filling pipe blockage based on circuit opening and closing, using the device according to any one of claims 1-5, characterized in that The method includes the following steps: S1: install the monitoring mechanism under the monitoring pipeline, connect the four hooks at the bottom of the monitoring pipeline with the four hook rings outside the top surface of the monitoring mechanism shell, fix the monitoring mechanism, then connect the wires led out by the two copper sheets inside the top surface of the monitoring mechanism shell to the power supply, connect the power supply to the PC computer, PLC and jet processing device respectively and provide power for them to form a pipe blockage monitoring circuit; S2: install the jet processing device at a position where the pipeline cross section deflects 45° along the center line to both sides and arrange it to tilt 45° along the slurry conveying direction, which can jet along the slurry conveying direction and is installed on both sides of the monitoring pipeline respectively; connect the PC computer to the PLC and connect the PLC to a plurality of jet valves in series; S3: when the pipeline starts to fill, add magnetite sand to the filling slurry, so that the weight ratio of the magnetite sand is 30%-40%, and put a small iron block with a mass of 20-30 grams into the monitoring mechanism, so as to ensure that when the slurry is segregated, the magnetic force increases to attract the small iron block; at this time, determine whether the pipeline is blocked according to the on-off of the circuit; S4: When the slurry is separated, the slurry density at the bottom of the pipe gradually increases, and the accumulation of magnetite sand leads to an increase in magnetic attraction. When the slurry in the pipe is blocked, the magnetic attraction When the small iron block is attracted to the top surface of the monitoring mechanism and connected to the power supply circuit of the two copper sheets, the power supply will start to supply power to the PC computer, PLC, and the air jet processing device. The PC computer is connected to the PLC and sends a start signal to the PLC, which controls the air jet processing device to start spraying air to process the blocked pipe. S5: With the continuous treatment of the jet processing device, the accumulation of the slurry at the bottom of the pipeline gradually decreases, and the magnetic attraction force also gradually decreases; when the slurry in the pipeline returns to normal operation, the magnetic attraction force The small iron block falls down due to the magnetic attraction force smaller than its own gravity, at this time, the pipe blockage monitoring circuit is disconnected, the power supply stops supplying power to the PC computer, the PLC and the jet processing device, and the pipe blockage treatment is completed; S6: when the pipe blockage phenomenon occurs again, repeat steps S4 and S5 to realize closed-loop control of pipeline monitoring and pipe blockage treatment.

7. The method of claim 6, wherein the method further comprises: Small iron block is placed in the monitoring mechanism inside can move freely, when the pipeline slurry blockage, magnetic force , Indicates the small iron block suffered gravity, Indicates the small iron block mass, Indicates the magnetic material accumulation can produce magnetic force, g Indicates the gravity acceleration; small iron block is attracted to the monitoring mechanism inside the top surface; when the pipeline slurry normal operation, magnetic force , small iron block falls to the monitoring mechanism inside the bottom surface.

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