CN113624765A - Visual monitoring experiment device for filling slurry pipeline transportation and use method - Google Patents
Visual monitoring experiment device for filling slurry pipeline transportation and use method Download PDFInfo
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Abstract
The invention provides a visual monitoring experimental device for filling slurry pipeline transportation and a using method thereof, and belongs to the technical field of mine filling pipeline transportation. The device comprises an L-shaped pipeline conveying system, a resistance tomography system, a slurry circulating pumping system and a high-speed camera system, wherein an electrode sensor is arranged on the L-shaped pipeline conveying system and is connected with the resistance tomography system, the slurry circulating pumping system realizes the circulation of slurry in the L-shaped pipeline conveying system, and the high-speed camera system makes a video of the slurry flowing state of the L-shaped pipeline conveying system. Each component of the device can be freely disassembled and randomly combined, the capturing and measuring of slurry flowing states of any vertical and horizontal pipe sections under different filling multiple line conditions are met, slurry flowing parameters such as pressure, flow velocity, concentration distribution along the cross section of a pipeline, split-phase content and the like in the pipe are obtained, and basic data are provided for the research of the flowing behavior characteristics of the slurry pipe.
Description
Technical Field
The invention relates to the technical field of mine filling pipeline transportation, in particular to a visual monitoring experimental device for filling slurry pipeline transportation and a using method thereof.
Background
Pipeline transportation is a key link of mine filling technology. In the process of long-distance pipe transportation, the flowing state of slurry in a pipeline is difficult to predict, particularly when the slurry enters a vertical pipeline from a horizontal pipeline, the flowing state of the slurry is changed from relatively stable to unstable, and the method is particularly embodied in that the vertical pipeline is easy to vibrate, sound, block and wear and tear. Therefore, ensuring the stable flow of the filling slurry in the pipe is an important prerequisite for smooth production of mines and efficient operation of the system.
At the present stage, the complexity of the flow process of the slurry in the pipeline limits people to understand and research the slurry more deeply, and in addition, due to the lack of an effective and reliable testing method and a technical means, the flow rule of the filling slurry in the pipeline is not disclosed, so that the blindness of engineering design and the difficulty of system maintenance are increased undoubtedly, and the popularization and the application of the mine filling technology are also limited to a certain extent. Therefore, a visual monitoring experimental device for filling slurry pipeline transportation is urgently needed, under the premise that the internal structure of a pipeline and the flowing factors of slurry are not influenced and interfered, the local instantaneous flowing characteristic parameters of slurry pipeline transportation are captured, the visual monitoring of the flowing behavior of the slurry pipeline transportation is realized, and an equipment foundation is laid for researching the change rule of the concentration, the flow rate, the flow pattern and the rheological parameters of slurry in the pipeline, so that the development and the perfection of the filling pipeline transportation theory and the mine filling technology are promoted.
Disclosure of Invention
The invention aims to provide a visual monitoring experimental device for filling slurry pipeline transportation and a use method thereof, which can realize real-time visual monitoring of the dynamic filling slurry pipeline transportation process, acquire slurry flow parameters and lay a foundation for research on the flow behavior characteristics of slurry pipeline transportation.
The device comprises an L-shaped pipeline conveying system, a resistance tomography system, a slurry circulating pumping system and a high-speed camera system, wherein the L-shaped pipeline conveying system comprises a charging hopper, a vertical pipeline and a horizontal pipeline, the vertical pipeline is connected below the charging hopper, and the vertical pipeline is connected with the horizontal pipeline; the resistance tomography system comprises an electrode sensor, a signal cable, a data acquisition device, a data line and a main control computer, wherein the electrode sensor is arranged at the corresponding position of a vertical pipeline or a horizontal pipeline according to the experiment requirement; the slurry circulating pumping system comprises a material containing groove, a slurry pump, a common pipeline, a pipe clamp and a threaded rod, wherein the common pipeline is wrapped by the pipe clamp and is fixed on the fixed surface through the threaded rod; the high-speed camera system comprises a high-speed camera and a tripod, wherein the high-speed camera is arranged on the tripod, and the high-speed camera system is arranged on one side of the L-shaped pipeline conveying system.
The vertical pipeline and the horizontal pipeline respectively comprise at least one organic glass pipe, at least one pressure transmitter and at least one electromagnetic flowmeter, the organic glass pipes are connected through a flange or a three-way flange, when the three-way flange is adopted for connection, the other end of the three-way flange is connected with the pressure transmitter, the electromagnetic flowmeter is installed on the organic glass pipes, the vertical pipeline and the horizontal pipeline are connected through a first elbow, and a second elbow is arranged at the tail end of the horizontal pipeline to guide slurry to enter the material containing groove; the horizontal pipeline is arranged on the horizontal plane through a support frame, and the charging hopper is supported and fixed through a steel support.
The lower part of the charging hopper is provided with a first ball valve.
The horizontal pipeline is provided with a second ball valve, and the second ball valve is installed at the position behind the horizontal pipeline electrode sensor.
The charging hopper is made of organic glass, and the outer wall of the charging hopper is carved with capacity scale marks.
The electrode sensor is provided with two electrode planes along the axial direction of the pipeline, each electrode plane comprises sixteen threaded holes which are uniformly distributed along the pipe wall of the electrode sensor, and each threaded hole is provided with one electrode.
The signal cable consists of sixteen signal wires and a ground wire, and each signal wire is connected with a circular pre-insulated terminal.
The electrode comprises silica gel gasket, metal gasket, stainless steel nut, stainless steel bolt, and the circular insulating terminal in advance that every signal line of signal cable connects all is connected to a stainless steel bolt on, and stainless steel bolt pierces through the electrode sensor pipe wall through the screw hole, and stainless steel bolt's screw rod top plane flushes with the pipeline inner wall mutually, loops through silica gel gasket, metal gasket, stainless steel nut at last and fixes stainless steel bolt.
The using method of the experimental device comprises the following steps:
s1: according to the experimental scheme, determining the number and the positions of the first ball valve, the organic glass tube, the electrode sensor, the pressure transmitter, the electromagnetic flowmeter and the second ball valve, and connecting;
s2: each electrode sensor is correctly connected with the respective data acquisition device and the main control computer, and the ground wire in each signal cable is connected with the data acquisition device and is grounded;
s3: opening a first ball valve at the bottom of the charging hopper, and closing a second ball valve of the horizontal pipeline;
s4: preparing filling slurry in a material containing groove according to an experimental scheme; starting a slurry pump, pumping the slurry in the material containing groove to a charging hopper, and closing the slurry pump when the slurry is completely filled in all pipelines between the first ball valve and the second ball valve;
s5: operating the resistance tomography system, measuring and recording a calibration value, starting the ball valve II after the measurement is finished, discharging slurry and washing the pipeline by using clear water;
s6: closing the first ball valve and opening the second ball valve;
s7: starting a slurry pump, pumping the slurry in the material containing groove to a charging hopper, and closing the slurry pump when the liquid level of the slurry reaches the capacity scale mark required by the experiment;
s8: fixing a high-speed camera on a tripod, moving and adjusting the height of the tripod to focus the high-speed camera on an organic glass pipe section to be observed;
s9: opening the ball valve I, starting a high-speed camera, operating a resistance tomography system, loading a calibration value, and displaying whether the slurry in the pipe is full of the pipe and the concentration distribution information of the slurry along the section of the pipe in real time by a main control computer so as to analyze and obtain the flow rate and the split-phase content of the slurry; in the experimental process, the slurry pump is controlled and the position of the slurry liquid level in the charging hopper is adjusted according to the requirement;
s10: and (5) after the experiment is finished, discharging slurry in the pipe, and washing the pipeline by using clear water.
The technical scheme of the invention has the following beneficial effects:
according to the scheme, on the premise of not influencing and interfering the internal structure of the pipeline and the flow factors of slurry, whether the slurry in the pipeline is full of the pipeline and the concentration distribution of the slurry along the section of the pipeline can be monitored in real time in a visual dynamic image mode, and the flow parameters of the slurry such as pressure, flow velocity and split-phase content in the pipeline are obtained; on the other hand, the device can be freely disassembled and assembled, and random combination of all components can meet the capture and measurement of the slurry flowing state of any vertical and horizontal pipe sections under different filling multiple line conditions, so that basic data are provided for the research of the flowing behavior characteristics of the slurry pipe.
Drawings
Fig. 1 is a schematic structural view of a visual monitoring experimental device for pipeline transportation of filling slurry according to the present invention;
fig. 2 is a top view of an electrode sensor in the visual monitoring experimental device for the pipeline transportation of filling slurry according to the present invention;
fig. 3 is a schematic view of electrode installation of an electrode sensor in the filling slurry pipeline transportation visual monitoring experimental device.
Wherein: 1-an L-shaped pipeline conveying system; 2-electrical resistance tomography system; 3-slurry circulating pumping system; 4-high speed camera system; 101-a charging hopper; 102-ball valve one; 103-organic glass tube one; 104-a three-way flange I; 105-a pressure transmitter one; 106-organic glass tube II, 107-flange; 108-plexiglass tube three; 109-a three-way flange II; 110-pressure transmitter two; 111-elbow one; 112-plexiglass tube four; 113-three-way flange three; 114-pressure transmitter three; 115-ball valve two; 116-plexiglass tube five; 117-electromagnetic flow meter; 118-plexiglass tube six; 119-elbow II; 120-steel bracket; 121-a first support frame; 122-support frame two; 123-support frame III; 201-electrode sensor one; 202-electrode sensor two; 203-signal cable one; 204-signal cable two; 205-a data acquisition device I; 206-data acquisition device two; 207-data line one; 208-data line two; 209-a master control computer I; 210-master control computer two; 2011-silica gel pad; 2012-metal gasket; 2013-a first stainless steel nut; 2014-stainless steel nut II; 2015-stainless steel bolts; 2031-round pre-insulated terminals; 301-material containing groove; 302-slurry pump; 303-ordinary piping; 304-pipe strap; 305-a threaded rod; 401-high speed camera; 402-a tripod.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a visual monitoring experimental device for filling slurry pipeline transportation and a using method thereof.
The device comprises an L-shaped pipeline conveying system 1, a resistance tomography system 2, a slurry circulating pumping system 3 and a high-speed camera system 4, wherein the L-shaped pipeline conveying system 1 comprises a charging hopper 101, a vertical pipeline and a horizontal pipeline, the vertical pipeline is connected below the charging hopper 101, and the vertical pipeline is connected with the horizontal pipeline; the resistance tomography system 2 comprises an electrode sensor, a signal cable, a data acquisition device, a data line and a main control computer, wherein the electrode sensor is arranged at the corresponding position of a vertical pipeline or a horizontal pipeline according to the experiment requirement, the electrode sensor is connected with the data acquisition device through the signal cable, and the data acquisition device is connected with the main control computer through the data line; the slurry circulating pumping system comprises a material containing groove 301, a slurry pump 302, a common pipeline 303, a pipe clamp 304 and a threaded rod 305, wherein the common pipeline 303 is wrapped by the pipe clamp 304 and is fixed on a fixed surface through the threaded rod 305, slurry in the material containing groove 301 enters the common pipeline 303 through the slurry pump 302, and the slurry flows back to the hopper 101 through the common pipeline 303; the high-speed camera system 4 includes a high-speed camera 401 and a tripod 402, the high-speed camera 401 is placed on the tripod 402, and the high-speed camera system 4 is placed on the side of the L-shaped pipe transportation system 1.
The vertical pipeline and the horizontal pipeline respectively comprise at least one organic glass pipe, at least one pressure transmitter and at least one electromagnetic flowmeter, the organic glass pipes are connected through a flange or a three-way flange, when the three-way flange is adopted for connection, the other end of the three-way flange is connected with the pressure transmitter, the electromagnetic flowmeter is installed on the organic glass pipes, the vertical pipeline and the horizontal pipeline are connected through a first elbow 111, and the tail end of the horizontal pipeline is provided with a second elbow 119 so as to guide slurry to enter the material containing groove 301; the horizontal pipeline is installed on the horizontal plane through a support frame, and the charging hopper 101 is supported and fixed through a steel bracket 120.
The using method of the experimental device comprises the following steps:
s1: according to the experimental scheme, the number and the positions of the first ball valve 102, the plexiglass tube, the electrode sensor, the pressure transmitter, the electromagnetic flowmeter and the second ball valve 115 are determined and connected;
s2: each electrode sensor is correctly connected with the respective data acquisition device and the main control computer, and the ground wire in each signal cable is connected with the data acquisition device and is grounded;
s3: opening a first ball valve 102 at the bottom of the charging hopper 101, and closing a second ball valve 115 of the horizontal pipeline;
s4: according to the experimental scheme, filling slurry is prepared in a material containing groove 301; starting a slurry pump 302, pumping the slurry in the material containing groove 301 to the charging hopper 101, and closing the slurry pump 302 when the slurry completely fills all the pipelines between the first ball valve 102 and the second ball valve 115;
s5: operating the resistance tomography system 2, measuring and recording a calibration value, starting the second ball valve 115 after the measurement is finished, discharging slurry and washing the pipeline with clean water;
s6: closing the first ball valve 102, and opening the second ball valve 115;
s7: starting a slurry pump 302, pumping the slurry in the material containing groove 301 to the charging hopper 101, and closing the slurry pump 302 when the liquid level of the slurry reaches the capacity scale mark required by the experiment;
s8: fixing a high-speed camera 401 on a tripod 402, moving and adjusting the height of the tripod 402 to enable the high-speed camera 401 to focus on an organic glass pipe section needing to be observed;
s9: opening the first ball valve 102, starting the high-speed camera 401, operating the resistance tomography system 2, loading a calibration value, and displaying whether the slurry in the pipe is full of the pipe and the concentration distribution information of the slurry along the section of the pipe in real time by the main control computer so as to analyze and obtain the flow rate and the split-phase content of the slurry; in the experimental process, the slurry pump 302 is opened to control and adjust the position of the slurry liquid level in the charging hopper 101 according to the requirement;
s10: and (5) after the experiment is finished, discharging slurry in the pipe, and washing the pipeline by using clear water.
The following description is given with reference to specific examples.
As shown in fig. 1, the apparatus includes an L-shaped pipe conveying system 1, a resistance tomography system 2, a slurry circulation pumping system 3, and a high-speed camera system 4. Wherein, the L-shaped pipeline conveying system 1 comprises a charging hopper 101, a vertical pipeline and a horizontal pipeline, a first ball valve 102 is arranged at the lower part of the charging hopper 101, the vertical pipeline comprises a first plexiglass pipe 103, a first three-way flange 104, a first pressure transmitter 105, a second plexiglass pipe 106, a flange 107, a third plexiglass pipe 108, a second three-way flange 109 and a second pressure transmitter 110, the first plexiglass pipe 103, the first three-way flange 104, the second plexiglass pipe 106, the flange 107, the third plexiglass pipe 108 and the second three-way flange 109 are sequentially connected, the first three-way flange 104 is connected with the first pressure transmitter 105, the second three-way flange 109 is connected with the second pressure transmitter 110, the horizontal pipeline comprises a fourth plexiglass pipe 112, a third three-way flange 113, a third pressure transmitter 114, a second ball valve 115, a fifth plexiglass pipe 116, an electromagnetic flowmeter 117 and a sixth plexiglass pipe 118, the fourth plexiglass pipe 112 is connected with the second three-way flange 109 through a first elbow 111, the four organic glass tubes 112, the three-way flange 113, the ball valve 115, the organic glass tube 116, the electromagnetic flowmeter 117 and the six organic glass tubes 118 are sequentially connected, the three-way flange 113 is connected with the pressure transmitter 114, the tail ends of the six organic glass tubes 118 are connected with the elbow 119, the horizontal pipeline is fixedly supported by the first support frame 121, the second support frame 122 and the third support frame 123, and the charging hopper 101 is supported by the steel support 120.
The electrical resistance tomography system 2 comprises a first electrode sensor 201, a second electrode sensor 202, a first signal cable 203, a second signal cable 204, a first data acquisition device 205, a second data acquisition device 206, a first data line 207, a second data line 208, a first main control computer 209 and a second main control computer 210. The first electrode sensor 201 is connected with a vertical pipeline and is connected with a first data acquisition device 205 through a first signal cable 203, and the first data acquisition device 205 is connected with a first main control computer 209 through a first data cable 207; similarly, the second electrode sensor 202 is connected to the horizontal pipeline and is connected to the second data acquisition device 206 through the second signal cable 204, and the second data acquisition device 206 is connected to the second host computer 210 through the second data cable 208.
The slurry circulating pumping system 3 comprises a material containing groove 301, a slurry pump 302, a common pipeline 303, a pipe clamp 304 and a threaded rod 305; the common pipe 303 is enclosed by a pipe clamp 304 and fixed to a fixed surface by a threaded rod 305 so that the slurry can flow back into the hopper 101 through the common pipe 303.
The high-speed camera system 4 includes a high-speed camera 401, a tripod 402, and the high-speed camera 401 is placed on the tripod 402.
Specifically, the charging hopper 101 is made of organic glass, and the outer wall thereof is marked with capacity scale marks. The charging hopper 101 is placed on the steel bracket 120, and the lower part is connected with the first ball valve 102. The first ball valve 102 is connected with a first plexiglass pipe 103, a first three-way flange 104, a second plexiglass pipe 106, a first electrode sensor 201, a third plexiglass pipe 108 and a second three-way flange 109 in sequence from bottom to top to form a vertical pipeline of the L-shaped pipeline conveying system 1, the first pressure transmitter 105 is connected to the upper portion of the vertical pipeline through the first three-way flange 104, and the second pressure transmitter 110 is connected to the lower portion of the vertical pipeline through the second three-way flange 109. The tail end of the vertical pipeline is connected with a first elbow 111, the first elbow 111 is sequentially connected with a fourth plexiglass pipe 112, a third tee flange 113, a second electrode sensor 202, a second ball valve 115, a fifth plexiglass pipe 116, an electromagnetic flowmeter 117 and a sixth plexiglass pipe 118 backwards to form a horizontal pipeline of the L-shaped pipeline conveying system 1, a third pressure transmitter 114 is connected to the horizontal pipeline through the third tee flange 113, and the tail end of the horizontal pipeline is connected with a second elbow 119 to guide slurry to flow to the material containing groove 301. The bottoms of the first elbow 111, the fourth plexiglass tube 112 and the fifth plexiglass tube 116 are supported by a first support frame 121, a second support frame 122 and a third support frame 123 respectively to keep the horizontal pipeline stable.
The first electrode sensor 201 and the second electrode sensor 202 are both provided with two electrode planes along the axial direction of the pipeline, each electrode plane comprises sixteen threaded holes which are uniformly distributed along the pipe wall of the electrode sensor, each threaded hole is provided with one electrode, and fig. 2 shows a top view of the electrode sensor in the experimental device.
The first signal cable 203 and the second signal cable 204 have the same structure, and are composed of sixteen signal lines and a ground line, and each signal line is connected with a circular pre-insulated terminal 2031.
As shown in fig. 3, which is a schematic view of an electrode mounting structure of an electrode sensor in the experimental apparatus, an electrode is composed of a silicone gasket 2011, a metal gasket 2012, a first stainless steel nut 2013, a second stainless steel nut 2014, and a stainless steel bolt 2015. Every circular insulating terminal 2031 in advance all is connected to a stainless steel bolt 2015 on, and stainless steel bolt 2015 pierces through the electrode sensor pipe wall through the screw hole, and the screw rod top plane flushes with the pipeline inner wall mutually, loops through silica gel gasket 2011, metal gasket 2012, stainless steel nut 2013 and stainless steel nut 2014 in proper order at last and fixes stainless steel bolt 2015.
The height of the steel bracket 120, the height of the first support frame 121, the height of the second support frame 122, the height of the third support frame 123 and the height of the tripod 402 can be adjusted according to experimental requirements.
In a specific experiment, the visual monitoring experiment device for the filling slurry pipeline transportation is designed, wherein an L-shaped pipeline transportation system 1 is a slurry transportation system with the pipeline inner diameter of 50mm and the wall thickness of 5mm, and both a flange and a tee flange included in the system are matched with the pipe diameter of 50 mm; the charging hopper 101 is composed of an upper cylinder and a lower conical hopper, the diameter of the cylinder is 80cm, the height of the cylinder is 10cm, and the conical angle of the conical hopper is 90 degrees; the length of the first organic glass tube is 103 cm, the length of the second organic glass tube is 90cm, the length of the third organic glass tube is 108 cm, the length of the fourth organic glass tube is 100cm, the length of the fifth organic glass tube is 100cm, and the length of the sixth organic glass tube is 100 cm; the first elbow 111 and the second elbow 119 are both 90-degree elbows. The first pressure transmitter 105, the second pressure transmitter 110, the third pressure transmitter 114 and the electromagnetic flowmeter 117 can be connected with a data recorder to continuously record and save the pressure and flow data in the pipe during the experiment. The first electrode sensor 201 and the second electrode sensor 202 are identical in structure, a UPVC pipe is adopted, the length is 26cm, the central section of the pipeline is taken as a symmetrical plane, an electrode plane is respectively arranged on the upper portion and the lower portion, and the distance between the electrode plane and the central section of the pipeline is 3 cm. Stainless steel bolt 2015 adopts 304 stainless steel hexagon bolts with nominal diameter M4, and silica gel gaskets, metal gaskets, stainless steel nuts and round pre-insulated terminals are matched with M4 bolts. The material containing groove 301 is a rectangular stainless steel groove with the length of 2m, the width of 1m and the height of 30cm, the common pipeline 303 adopts a UPVC pipe, the inner diameter is 50mm, and the wall thickness is 5 mm.
In the experiment, the device comprises the following specific steps:
the method comprises the following steps: according to the experimental scheme, the positions of a first plexiglas pipe 103, a first three-way flange 104, a first pressure transmitter 105, a second plexiglas pipe 106, a first electrode sensor 201, a third plexiglas pipe 108, a second three-way flange 109, a second pressure transmitter 110, a first elbow 111, a fourth plexiglas pipe 112, a third three-way flange 113, a third pressure transmitter 114, a second electrode sensor 202, a second ball valve 115, a fifth plexiglas pipe 116, an electromagnetic flowmeter 117, a sixth plexiglas pipe 118 and a second elbow 119 are determined and connected correctly.
Step two: and each electrode sensor is correctly connected with the respective data acquisition device and the main control computer, and the ground wire in each signal cable is connected with the data acquisition device and is grounded.
Step three: the first ball valve 102 at the bottom of the charging hopper 101 is opened, and the second ball valve 115 of the horizontal pipeline is closed.
Step four: according to the experimental scheme, filling slurry with a certain concentration is prepared in a material containing groove 301; the slurry pump 302 is turned on to pump the slurry in the holding tank 301 to the hopper 101, and the slurry pump 302 is turned off when the slurry completely fills all the lines between the first ball valve 102 and the second ball valve 115.
Step five: the electrical resistance tomography system 2 is operated and calibration values are measured and recorded. And after the measurement is finished, opening the second ball valve 115, draining slurry and washing the pipeline by using clean water.
Step six: the first ball valve 102 is closed and the second ball valve 115 is opened.
Step seven: and (3) starting a slurry pump 302, pumping the slurry in the material containing groove 301 to the charging hopper 101, and closing the slurry pump 302 when the liquid level of the slurry reaches the capacity scale mark required by the experiment.
Step eight: fixing a high-speed camera 401 on a tripod 402, moving and adjusting the height of the tripod 402 to enable the high-speed camera 401 to focus on an organic glass pipe section needing to be observed;
step nine: and opening the first ball valve 102, starting the high-speed camera 401, operating the resistance tomography system 2, loading a calibration value, and displaying whether the slurry in the pipe is full of the pipe and the concentration distribution information of the slurry along the section of the pipe in real time by using the main control computer so as to analyze and obtain the flow rate and the split-phase content of the slurry. In the experimental process, the slurry pump 302 can be opened according to the requirement to control and adjust the position of the slurry liquid level in the charging hopper 101.
Step ten: and (5) after the experiment is finished, discharging slurry in the pipe, and washing the pipeline by using clear water.
Step eleven: and when the slurry proportion is changed, repeating the steps from three to ten. When the L-shaped pipe conveying system 1 is disassembled, the steps one to ten are repeated.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides a visual monitoring experimental apparatus of filling ground paste pipeline transportation which characterized in that: the device comprises an L-shaped pipeline conveying system (1), a resistance tomography system (2), a slurry circulating pumping system (3) and a high-speed camera system (4), wherein the L-shaped pipeline conveying system (1) comprises a charging hopper (101), a vertical pipeline and a horizontal pipeline, the vertical pipeline is connected below the charging hopper (101), and the vertical pipeline is connected with the horizontal pipeline; the resistance tomography system (2) comprises an electrode sensor, a signal cable, a data acquisition device, a data line and a main control computer, wherein the electrode sensor is arranged at the corresponding position of a vertical pipeline or a horizontal pipeline according to the experiment requirement; the slurry circulating pumping system comprises a material containing groove (301), a slurry pump (302), a common pipeline (303), a pipe clamp (304) and a threaded rod (305), wherein the common pipeline (303) is wrapped by the pipe clamp (304) and is fixed on a fixed surface through the threaded rod (305), slurry in the material containing groove (301) enters the common pipeline (303) through the slurry pump (302), and the slurry flows back to the charging hopper (101) through the common pipeline (303); the high-speed camera system (4) comprises a high-speed camera (401) and a tripod (402), wherein the high-speed camera (401) is arranged on the tripod (402), and the high-speed camera system (4) is arranged on one side of the L-shaped pipeline conveying system (1).
2. The visual monitoring experimental device for pipe transportation of filling slurry according to claim 1, characterized in that: the vertical pipeline and the horizontal pipeline respectively comprise at least one organic glass pipe, at least one pressure transmitter and at least one electromagnetic flowmeter, the organic glass pipes are connected through a flange or a three-way flange, when the three-way flange is adopted for connection, the other end of the three-way flange is connected with the pressure transmitter, the electromagnetic flowmeter is installed on the organic glass pipes, the vertical pipeline and the horizontal pipeline are connected through a first elbow (111), and a second elbow (119) is arranged at the tail end of the horizontal pipeline to guide slurry to enter the material containing groove (301); the horizontal pipeline is installed on the horizontal plane through a support frame, and the charging hopper (101) is supported and fixed through a steel bracket (120).
3. The visual monitoring experimental device for pipe transportation of filling slurry according to claim 1, characterized in that: and a first ball valve (102) is arranged at the lower part of the charging hopper (101).
4. The visual monitoring experimental device for pipe transportation of filling slurry according to claim 1, characterized in that: the horizontal pipeline is provided with a second ball valve (115), and the second ball valve (115) is installed at the position behind the horizontal pipeline electrode sensor.
5. The visual monitoring experimental device for pipe transportation of filling slurry according to claim 1, characterized in that: the charging hopper (101) is made of organic glass materials, and the outer wall of the charging hopper is marked with capacity scale marks.
6. The visual monitoring experimental device for pipe transportation of filling slurry according to claim 1, characterized in that: the electrode sensor is provided with two electrode planes along the axial direction of the pipeline, each electrode plane comprises sixteen threaded holes which are uniformly distributed along the pipe wall of the electrode sensor, and each threaded hole is provided with one electrode.
7. The visual monitoring experimental device for pipe transportation of filling slurry according to claim 1, characterized in that: the signal cable is composed of sixteen signal wires and a ground wire, and each signal wire is connected with a circular pre-insulated terminal.
8. The visual monitoring experimental device for pipe transportation of filling slurry according to claim 6, characterized in that: the electrode comprises silica gel gasket (2011), metal gasket (2012), the stainless steel nut, stainless steel bolt (2015), the circular insulating terminal in advance that the every signal line of signal cable connects all is connected to on one stainless steel bolt (2015), stainless steel bolt (2015) pierces through the electrode sensor pipe wall through the screw hole, and stainless steel bolt's screw rod top plane flushes with the pipe inner wall mutually, loop through silica gel gasket (2011) at last, metal gasket (2012), stainless steel nut fixes stainless steel bolt (2015).
9. The use method of the visual monitoring experimental device for the pipeline transportation of filling slurry according to claim 1 is characterized in that: the method comprises the following steps:
s1: according to the experimental scheme, determining the number and the positions of a first ball valve (102), a plexiglas pipe, an electrode sensor, a pressure transmitter, an electromagnetic flowmeter and a second ball valve (115), and connecting;
s2: each electrode sensor is correctly connected with the respective data acquisition device and the main control computer, and the ground wire in each signal cable is connected with the data acquisition device and is grounded;
s3: opening a first ball valve (102) at the bottom of the charging hopper (101), and closing a second ball valve (115) of the horizontal pipeline;
s4: according to an experimental scheme, filling slurry is prepared in a material containing groove (301); starting a slurry pump (302), pumping the slurry in the material containing groove (301) to the charging hopper (101), and closing the slurry pump (302) when the slurry completely fills all pipelines between the first ball valve (102) and the second ball valve (115);
s5: operating the resistance tomography system (2), measuring and recording a calibration value, starting a second ball valve (115) after the measurement is finished, draining slurry and washing the pipeline with clean water;
s6: closing the first ball valve (102), and opening the second ball valve (115);
s7: starting a slurry pump (302), pumping the slurry in the material containing groove (301) to the charging hopper (101), and closing the slurry pump (302) when the liquid level of the slurry reaches the capacity scale mark required by the experiment;
s8: fixing a high-speed camera (401) on a tripod (402), moving and adjusting the height of the tripod (402) to focus the high-speed camera (401) on a plexiglas pipe section to be observed;
s9: opening a ball valve I (102), starting a high-speed camera (401), operating a resistance tomography system (2), loading a calibration value, displaying whether the slurry in a pipe is full of the pipe and the concentration distribution information of the slurry along the section of the pipe in real time by a main control computer, and further analyzing to obtain the flow rate and the split-phase content of the slurry; in the experimental process, a slurry pump (302) is opened according to the requirement to control and adjust the position of the slurry liquid level in the charging hopper (101);
s10: and (5) after the experiment is finished, discharging slurry in the pipe, and washing the pipeline by using clear water.
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