CN109727521B - Sand filling model pipe filling and compacting device and method - Google Patents
Sand filling model pipe filling and compacting device and method Download PDFInfo
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- CN109727521B CN109727521B CN201910121626.0A CN201910121626A CN109727521B CN 109727521 B CN109727521 B CN 109727521B CN 201910121626 A CN201910121626 A CN 201910121626A CN 109727521 B CN109727521 B CN 109727521B
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- 239000004576 sand Substances 0.000 title claims abstract description 295
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005303 weighing Methods 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000005192 partition Methods 0.000 claims description 33
- 230000008569 process Effects 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 12
- 230000004888 barrier function Effects 0.000 claims description 5
- 238000004088 simulation Methods 0.000 abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 249
- 238000005429 filling process Methods 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 9
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- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 239000010687 lubricating oil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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Abstract
The invention discloses a sand filling model pipe filling and compacting device and a sand filling model pipe filling and compacting method, wherein an outlet of a first funnel is arranged above an inlet of a second funnel, an outlet of the second funnel is arranged above an inlet of a third funnel, outlets of the first funnel, the second funnel and the third funnel are respectively provided with a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, and weighing sensors are arranged on the second electromagnetic valve and the third electromagnetic valve; the vibration compacting system comprises a vibration table, a motor and a turntable, wherein the turntable is arranged on a vibration table surface of the vibration table, and the vibration table can drive the turntable to vibrate; the output shaft of the motor is connected with the turntable through a spline, when the vibrating table drives the turntable to vibrate, the motor can drive the turntable to rotate, the turntable can be detachably connected with the lower end of the sand filling model pipe, and after the sand filling model pipe is arranged on the turntable, the upper end of the sand filling model pipe is opposite to the outlet of the third funnel and can receive materials discharged from the outlet of the third funnel. The invention can simplify the traditional operation steps and improve the simulation experiment efficiency.
Description
Technical Field
The invention relates to the technical field of indoor simulation experiment equipment in the oil and gas field development engineering direction in the petroleum industry, in particular to a sand filling model pipe filling and compacting device and method, which are used for simplifying the traditional operation steps and improving the simulation experiment efficiency.
Background
The sand filling model pipe consists of a body and two cap plug joint integrated devices respectively positioned at two ends of the body, and the permeability parameters of stratum rock allowing fluid to pass through under corresponding conditions are obtained by filling different filling materials (usually spherical solid particles such as quartz sand and liquid can also be filled) in the body and simulating stratum under different experimental conditions (such as changing the pressure at two ends of an inlet and an outlet and passing through fluid flow). The sand filling model pipe is made of metal materials, and the inner wall of the sand filling model pipe is polished to be rough, so that the simulation experiment is closer to the actual condition of the stratum. Currently, laboratories typically use sand-filled model pipes with a body length of 1m and a diameter of 2.5cm for experiments; the sand filling model pipe can be spliced together in a threaded connection mode, a clamp connection mode and the like according to the difference of joints at two ends of the sand filling model pipe, the sand filling pipe is extended to different degrees, the passing distance of fluid in the pipe is prolonged to be more in line with the actual stratum environment, and the accuracy of simulation experiment results is improved.
The goal of maximally improving the recovery ratio of crude oil and obtaining the reserves of crude oil as much as possible is to direct the advancing direction of oil and gas field development engineering in the petroleum industry, and due to the particularity of crude oil recovery, scientific researchers in the industry need to conduct field application by carrying out a large number of indoor simulation experiments to obtain conclusions, so that the indoor simulation experiment equipment has wide application in the petroleum industry, such as sand filling model pipes, and has application in indoor simulation experiments such as supporting crack evaluation experiments, microbial oil displacement experiments, thickened oil thermal recovery experiments and the like.
Although widely used, the "sand filling" step still suffers from several problems (exemplified by spherical solid particles) during the use of sand-filled model tubing: in order to realize uniform sand filling, a mode of 'layer-by-layer sand filling' is generally adopted at present, namely: under the condition that one end of the sand filling model pipe is ensured to be sealed, filling sand which is pre-contained in the container is slowly poured into the sand filling pipe along the port of the other end, after a part of filling sand is poured, the sand filling is stopped, and the outer side of the sand filling pipe is knocked by a rubber hammer, so that a sand column formed by the filling sand which is just poured into the pipe is oscillated, and the original holes in the sand column are fully filled by sand grains, and the top surface of the sand column is slightly lowered; and then repeating the two operations, namely pouring sand slowly and tapping outside the sand filling pipe alternately, filling sand and knocking the sand simultaneously until the sand column is fully filled finally, and stopping filling sand layer by layer when the whole sand filling pipe is to be filled. The sand filling mode is adopted:
firstly, the process of knocking the sand filling pipe is performed manually, the force required for knocking the outer side of the sand filling pipe is difficult to quantitatively control due to the fact that the force required for knocking is completely dependent on the habit of an executor, even the same person is difficult to ensure that the sand filling pipe can be knocked with the same force all the time in the process of completing one knocking process, the sand filling pipe is uneven in stress, the sand filling effect is poor, the effect of 'full filling' which is supposed to be achieved is difficult to achieve in practice, and if the sand filling effect is worse if a plurality of persons are knocked in turn.
Secondly, accomplish "layer by layer sand filling" and generally need two people to cooperate, and need long-time strike sand filling pipe comparatively consume physical power, simultaneously, the sand filling pipe is mainly made by metal, whether sand filling all has great weight, when single experiment or take the team of women member as the main experiment, accomplish this operation comparatively inconveniently and be difficult to obtain good sand filling effect.
Finally, the time cost is enormous. Besides the longer time consumption of sand filling process, because can't accomplish even, abundant sand filling, in order to guarantee the accuracy of experimental result, generally carry out many times simulation experiment under same experimental condition, get a plurality of experimental result and take the average value, showing the whole duration that has increased the experiment.
Considering that the crude oil reserves which are easy to use are lower and lower along with the extension of the development time of each oil field, in order to meet the requirements of domestic oil and gas resources, each oil field is necessary to put the emphasis of future development on the reserves which are difficult to use before being obtained through the improvement of technology, so that the crude oil recovery ratio is further improved, and a large amount of indoor simulation experiments are necessary to carry out. Under the large environment, the defects of the original equipment are overcome by inventing novel indoor simulation experiment equipment such as the device, so that the improvement of the experiment efficiency has important significance for promoting the popularization and application of new technology and new products in the petroleum industry.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a sand filling model pipe filling and compacting device and method.
The technical scheme adopted by the invention is as follows:
the filling system comprises a first funnel, a second funnel and a third funnel, wherein an outlet of the first funnel is arranged above an inlet of the second funnel and is used for discharging materials into the second funnel, an outlet of the second funnel is arranged above an inlet of the third funnel and is used for discharging materials into the third funnel, a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve for controlling discharging materials are respectively arranged at the outlets of the first funnel, the second funnel and the third funnel, and a first weighing sensor and a second weighing sensor are respectively arranged on the second electromagnetic valve and the third electromagnetic valve;
the vibration compacting system comprises a vibration table, a motor and a turntable, wherein the turntable is arranged on a vibration table surface of the vibration table, and the vibration table can drive the turntable to vibrate; the output shaft of the motor is connected with the turntable through a spline, when the vibrating table drives the turntable to vibrate, the motor can drive the turntable to rotate, the turntable can be detachably connected with the lower end of the sand filling model pipe, and after the sand filling model pipe is arranged on the turntable, the upper end of the sand filling model pipe is opposite to the outlet of the third funnel and can receive materials discharged from the outlet of the third funnel.
The vibrating table-turntable connecting structure is of a hollow cylindrical structure, the lower end of the vibrating table-turntable connecting structure is fixedly connected with the table top of the vibrating table, an annular inner flange is arranged on the inner wall of the vibrating table-turntable connecting structure, an inner cavity of the vibrating table-turntable connecting structure is an upper cavity above the inner flange, and a lower cavity is below the inner flange; the turntable comprises a disk surface and a turntable base arranged at the center of the lower surface of the disk surface; the turntable base is arranged in the upper cavity, and the lower end of the turntable base is propped against the inner flange; the motor is arranged below the vibrating table, and an output shaft of the motor penetrates through the vibrating table and extends upwards from the centers of the lower cavity and the inner flange, and is connected with the turntable base through a spline; the lower end of the sand filling model pipe is detachably connected with the disk surface.
The disc surface is coaxially provided with a safety guardrail for preventing the sand filling model pipe from falling off.
The safety barrier is hollow cylinder, and the internal diameter of hollow cylinder is greater than the external diameter of sand filling model pipe.
A steel ball type thrust bearing is arranged between the lower end of the turntable base and the inner flange.
The center of the lower end of the sand filling model pipe is provided with a polygonal column structure, the center of the disk surface is provided with a groove matched with the polygonal column structure, and the sand filling model pipe can be inserted into the groove through the polygonal column structure.
The upper box body is arranged above the lower box body, the lower box body has no top surface, the upper box body and the lower box body can be connected in a sliding manner, and the upper box body can slide along one side of the lower box body to the other side opposite to the one side; the upper box body is sequentially provided with a first partition plate and a second partition plate from top to bottom between the top surface and the bottom edge of the upper box body, a first funnel is arranged between the top surface of the upper box body and the first partition plate, a second funnel is arranged between the first partition plate and the second partition plate, and a third funnel is arranged between the second partition plate and the bottom surface of the upper box body; the first partition board, the second partition board and the bottom surface of the upper box body are respectively provided with a central opening for the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve to pass through; the first weighing sensor and the second weighing sensor are respectively positioned below the second partition plate and the bottom surface of the upper box body; the vibration compacting system is arranged in the lower box body.
The lower box body is internally provided with a third baffle, the vibrating table is arranged on the upper part of the third baffle, the motor is arranged on the lower part of the third baffle, and the third baffle is provided with a through hole for the output shaft of the motor to pass through.
The intelligent control system comprises a first human-computer interface, a second human-computer interface and a PLC controller, wherein the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the first weighing sensor, the second weighing sensor, the first human-computer interface, the vibrating table, the motor and the second human-computer interface are all connected with the PLC controller; the first human-computer interface is used for setting sand filling quality and sand filling times; the second human-computer interface is used for setting the vibration mode of the vibration table and the rotating speed of the motor.
The filling and compacting method of the sand filling model pipe is carried out by adopting the device and comprises the following steps:
s1, filling sufficient filling sand into a first hopper;
s2, mounting an empty sand filling model pipe on a turntable;
s3, controlling the vibration table to vibrate at preset frequency and amplitude, controlling the motor to drive the rotary table to rotate at preset rotating speed, and driving the sand filling model pipe to synchronously rotate by the rotary table;
s4, controlling the first electromagnetic valve to be opened, discharging the filling sand in the first hopper to the second hopper, and closing the first electromagnetic valve when the filling sand amount in the second hopper reaches a preset value;
s5, controlling the second electromagnetic valve to be opened, and discharging the filling sand in the second hopper to the third hopper in a divided manner until the filling sand in the second hopper is discharged;
the first weighing sensor is used for weighing the filling sand in the third funnel every time when the filling sand in the second funnel is discharged to the third funnel, the second electromagnetic valve is controlled to be closed and the third electromagnetic valve is controlled to be opened after the filling sand in the third funnel reaches a preset value, the filling sand in the third funnel is discharged to the filling sand model pipe, and the third electromagnetic valve is closed when the second weighing sensor is used for detecting that the filling sand in the third funnel is zero;
And S6, after the vibration of the vibration table is finished and the rotation of the motor is finished, controlling the vibration table and the motor to stop, and filling and compacting the sand filling model pipe.
The sand filling model pipe filling and compacting device further comprises an intelligent control system, wherein the intelligent control system comprises a first human-computer interface, a second human-computer interface and a PLC (programmable logic controller), and the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the first weighing sensor, the second weighing sensor, the first human-computer interface, the vibrating table, the motor and the second human-computer interface are all connected with the PLC; the first human-computer interface is used for setting sand filling quality and sand filling times; the second human-computer interface is used for setting the vibration mode of the vibration table and the rotating speed of the motor;
in S3, setting sand filling quality and sand filling times through a first human-computer interface, and setting a vibration mode of a vibration table and the rotating speed of a motor through a second human-computer interface;
in S4 and S5, the PLC controls the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve, and controls the vibration table and the motor to work through data acquired by the first weighing sensor and the second weighing sensor and the setting of the first human-computer interface and the second human-computer interface.
Compared with the prior art, the invention has the following beneficial effects:
The sand filling model pipe filling and compacting device can automatically complete the filling process of the sand filling model pipe by utilizing the first hopper, the second hopper, the third hopper, the first electromagnetic valve, the second electromagnetic valve, the first weighing sensor of the third electromagnetic valve and the second weighing sensor, and when filling, filling sufficient filling sand into the first hopper, then opening the first electromagnetic valve, discharging the filling sand in the first hopper to the second hopper, and closing the first electromagnetic valve after the filling sand amount in the second hopper reaches a preset value; then controlling the second electromagnetic valve to be opened, and discharging the filling sand in the second hopper to the third hopper in a divided manner until the filling sand in the second hopper is discharged; and when the second weighing sensor detects that the filling sand amount in the third funnel is zero, the third electromagnetic valve is closed. The sand filling model pipe filling and compacting device can complete the automatic compacting process of the sand filling model pipe in the filling process by utilizing the vibration compacting system, and can control the vibration table to vibrate at preset frequency and amplitude and control the motor to drive the rotary table to rotate at preset rotating speed, and the rotary table drives the sand filling model pipe to synchronously rotate; and adding filling sand into the sand filling model pipe by using a filling system according to requirements in the process that the sand filling model pipe is driven to rotate and vibrate. In summary, the sand filling model pipe filling and compacting device of the invention can: (1) The process of uniformly distributing the filling sand in the sand filling model pipe is quantitatively controlled, so that the filling sand is more uniformly distributed, and the sand filling effect is remarkably improved; (2) The limitation of the sand filling step on the number of operators and the sex of operators when the sand filling model pipe is used for carrying out the indoor simulation experiment is obviously reduced, and the whole sand filling process can be completed by a single person only by the operation staff to complete a few simple auxiliary works without the need of matching multiple persons to complete single weighing, multiple sand filling and multiple knocking when the traditional sand filling method is adopted before; (3) The automatic and quantitative control of the sand filling process is realized, repeated average value taking is not needed, the experimental time is obviously shortened, and the project period is shortened to a certain extent.
According to the beneficial effects of the filling and compacting device for the sand filling model pipe, the filling and compacting method for the sand filling model pipe by adopting the device can quantitatively control the process of uniformly distributing the filling sand in the sand filling model pipe, so that the filling sand is more uniformly distributed, and the sand filling effect is remarkably improved; the limitation of the sand filling step on the number of operators and the sex of operators when the sand filling model pipe is used for carrying out the indoor simulation experiment is obviously reduced, and the whole sand filling process can be completed by a single person only by the operation staff to complete a few simple auxiliary works without the need of matching multiple persons to complete single weighing, multiple sand filling and multiple knocking when the traditional sand filling method is adopted before; the automatic and quantitative control of the sand filling process is realized, repeated average value taking is not needed, the experimental time is obviously shortened, and the project period is shortened to a certain extent.
Drawings
FIG. 1 is a front view of a sand pack mold tube packing and compacting apparatus of the present invention.
In the figure, 1-sand inlet cover plate, 2-first man-machine interface, 3-first funnel, 4-second funnel, 5-third funnel, 6-first baffle, 7-second baffle, 8-first solenoid valve, 9-second solenoid valve, 10-third solenoid valve, 11-first weighing sensor, 12-second weighing sensor, 13-sand filling model pipe, 14-safety fence, 15-disc surface, 16-turntable base, 17-steel ball type thrust bearing, 18-vibration table-turntable connecting structure, 19-output shaft, 20-vibration table, 21-third baffle, 22-motor, 23-second man-machine interface, 24-PLC controller, 25-triangular bracket, 26-upper box and 27-lower box.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Examples
As shown in FIG. 1, the sand filling model pipe filling and compacting device of the embodiment realizes information processing and automatic control by the mutual connection and mutual coordination of a mechanical part and an automatic control system, and converts the filling completion process of the sand filling model pipe from a traditional completely manual operation mode into a mode with automatic operation as a main mode and manual operation as an auxiliary mode, thereby solving the problems faced when the sand filling pipe is filled by using the manual layer-by-layer sand filling method which is commonly adopted at present, realizing the improvement of compaction degree, the reduction of operation difficulty and the shortening of time span, greatly improving the indoor simulation experiment efficiency and creating favorable conditions for popularization and application of new technologies and new products in the petroleum industry.
The sand filling mould pipe filling and compacting device comprises an upper box 26 and a lower box 27; the upper case 26 is placed above the lower case 27; the lower box 27 has no top plate, guide rails are arranged on the top surfaces of the front and rear plates of the lower box 27, grooves are respectively engraved on the inner sides of two sides of the bottom surface of the bottom plate of the upper box 26 along the length direction (along the y-axis direction in the three-dimensional coordinate system shown in fig. 1), pulleys are arranged in the grooves, and can be placed in the guide rails on the top surfaces of the front and rear plates of the lower box 27 and slide in the guide rails, so that the upper box 26 can move left and right above the lower box 27; the upper box body 26 is removed when the sand filling mould pipe is installed and removed, an operator can extend hands into the lower box body 27, and the upper box body 26 is moved back to cover the upper box body 27 when the device works; the space of the lower box body 27 is divided into an upper part and a lower part with different heights by a parallel partition board (namely a third partition board 21) with a central hole in the lower box body 27; the upper box body 26, the lower box body 27 and the inner partition plates are made of PVC plate materials, the PVC plates and the third partition plates which form the lower spaces of the upper box body 26 and the lower box body 27 are opaque, and the lower spaces of the upper box body 26 and the lower box body 27 are invisible from the outside; the PVC plate constituting the upper space of the lower case 27 is transparent, and the upper space of the lower case 27 is visible from the outside.
Filling system: the sand filling system is composed of a first human-computer interface 2, a sand inlet, a first funnel 3, a second funnel 4, a third funnel, a straight-through electromagnetic valve and a weighing sensor, wherein two parallel partition plates with holes in the center (a first partition plate 6 and a second partition plate 7 are arranged from top to bottom in sequence) divide the space of an upper box 26 into three layers with equal height, and the filling system can realize sand filling in batches by metering for a plurality of times according to preset sand filling quality parameters and batch parameters, thereby facilitating the subsequent compacting process while completing the sand filling process.
The first human-computer interface 2 in the filling system is used as a quality preset input panel, the first human-computer interface 2 is connected with a PLC (programmable logic controller) of the intelligent control system, and the first human-computer interface 2 is manually input: (1) The quality (unit: g) of the sand to be filled into the sand-filled model pipe 13; (2) After filling the sand filling model pipe 13 for several times, the input information is converted by the first human-computer interface 2, processed and transmitted to the PLC 24 through the input circuit. The first human-computer interface 2 adopts a key input mode similar to a calculator panel, and 15 keys (such as 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, cancel, confirm, divide and input) are used together with a small screen on the first human-computer interface 2.
The sand inlet in the filling system is positioned at the center of the top plate of the upper box 26 and is rectangular (the long side direction is the x axis direction in the three-dimensional coordinate system shown in fig. 1, and the x axis is perpendicular to the paper surface direction), and the sand inlet penetrates through the top plate; the upper part of the sand inlet is provided with a sand inlet cover plate 1 which is slightly longer and wider than the sand inlet cover plate, the edges of two long sides of the bottom surface of the sand inlet cover plate 1 are respectively provided with a cushion block with a certain width and thickness and equal length with the long sides, the bottom surface of the cushion block is carved with a groove with the length smaller than the length of the cushion block, and a small pulley is arranged in the groove; the outer sides of two long sides of the sand inlet are carved with guide rails with equal length and equal width as the grooves of the cover plate on the upper part of the sand inlet, and the distance between the two guide rails is equal to the distance between the two grooves; the pulleys in grooves on two sides of the bottom surface of the cover plate are arranged in guide rails on two sides of the sand inlet, the sand inlet cover plate 1 moves back and forth above the top plate along the long side direction of the sand inlet through the rotation of the pulleys, the sand inlet is exposed when needed, and the sand inlet is covered when not needed.
The first funnel 3, the second funnel 4 and the third funnel 5 in the filling system are of triangular funnel structures, compared with the conventional triangular funnel, the filling system has no lower cylindrical channel, and the first funnel 3, the second funnel 4 and the third funnel 5 are respectively and stably placed,Fully adhering the first, second and third layers of the filling system at the center positions; the heights of the first funnel 3, the second funnel 4 and the third funnel 5 are the same and are all 6.1cm; the top inlet of the first funnel 3 had a diameter of 30cm and an area of about 706.5cm 2 The top inlet of the first hopper 3 is larger than the sand inlet area (200 cm 2 ) The diameter of the top inlet of the second funnel 4 is 22cm and the area is about 380cm 2 The area of the top inlet of the second hopper 4 is larger than the sectional area (diameter 0.6cm, area about 0.3 cm) of the passage openings of the first electromagnetic valve 8, the second electromagnetic valve 9 and the third electromagnetic valve 10 (the first electromagnetic valve 8, the second electromagnetic valve 9 and the third electromagnetic valve 10 are all through electromagnetic valves) 2 The outlet areas of the bottoms of the first funnel 3, the second funnel 4 and the third funnel 5 are the same.
The first electromagnetic valve 8, the second electromagnetic valve 9 and the third electromagnetic valve 10 are respectively arranged at the center opening on the bottom surfaces of the first partition plate 6, the second partition plate 7 and the upper box 26, the electromagnet coils, the iron cores, the springs and other control parts of the first electromagnetic valve 8, the second electromagnetic valve 9 and the third electromagnetic valve 10 are respectively bonded at the edges of the opening on the bottom surfaces of the first partition plate, the second partition plate and the upper box 26, one end of the electromagnetic valve body penetrates through the center opening, the center opening is tightly attached to the valve body without gaps, and the bottom of the triangular funnel structure is arranged above the closing member in the passage opening of the valve body. The PLC controls the on-off of the electromagnetic valve, when the electromagnetic valve is electrified, the electromagnetic coil of the electromagnetic valve generates electromagnetic force to lift the closing member from the valve seat, the electromagnetic valve is opened, and the filling sand in the upper hopper flows downwards through the electromagnetic valve; when the power is off, the electromagnetic force disappears, the spring presses the closing member on the valve seat, the valve is closed, and the filling sand in the upper hopper stops flowing downwards. In the initial state, all three solenoid valves are in a power-off closed state.
The two weighing sensors in the filling system are respectively a first weighing sensor 11 and a second weighing sensor 12, the first weighing sensor 11 and the second weighing sensor 12 are respectively arranged on the second electromagnetic valve 9 and the third electromagnetic valve 10, and the weighing sensors enter from the channel opening at the lower end of the valve body of the electromagnetic valve and are connected with the bottom surface of the closing member in the channel opening of the valve body so as to weigh the filling sand in the hopper above the electromagnetic valve. The weighing result is converted and processed into input information, the input information is input into the PLC controller 24, the PLC controller 24 compares the new information with the stored information input from the first human-machine interface 2 according to the program requirement, logic judgment is made, and corresponding operation is performed through sending instruction control components (such as the first electromagnetic valve 8, the second electromagnetic valve 9 and the third electromagnetic valve 10). The information input at the first man-machine interface 2 is as follows: after filling sand X g and Y times, the information input to the PLC controller 24 after conversion and treatment is as follows: sand pack 1 (X g), sand pack 2 (X/Y g) and sand pack 3 (X- [ (Y-1) (X/Y) ] g), wherein sand pack 1 represents the total amount of sand pack; the sand filling amount 3 represents the sand filling amount of the last time; sand filling amount 2 represents the sand filling amount each time before the last time; the sand filling amount 2 and the sand filling amount 3 adopt different calculation formulas, so that the problem that when (X/Y) has more decimal places, because only limited effective digits can be reserved, large errors can exist after a plurality of cycles, and part of the sand filling remains in the second hopper 4 after the sand filling process is finished, and the accuracy of experimental results is affected to a certain extent. In the initial state, neither the first weighing sensor 11 nor the second weighing sensor 12 is connected to the PLC control circuit.
Automatic compacting system: the vibration table comprises a motor 22, a vibration table 20, a rotary table and a vibration table-rotary table connecting structure 18, wherein the motor 22 is a bidirectional single-phase alternating-current variable-speed motor; when the motor 22 works and the vibration table 20 does not work, the sand filling model pipe 13 compactly fills the sand filled in the pipe in a rotating mode; when the motor 22 is not in operation and the vibration table 20 is in operation, the sand-filled model pipe compactly fills the sand in the pipe in a vibration mode; when the motor 22 and the vibration table 20 are operated simultaneously, the sand-filled pattern tube 13 compacts the sand filled in the tube by means of rotation + vibration.
The installation mode of the bidirectional single-phase alternating-current variable-speed motor in the automatic compacting system is vertical (namely, the output shaft 19 is upwards), the motor is fixed at the center opening of the bottom surface of the third partition plate 21 in a threaded connection mode, the bottom of the motor is placed on an iron triangular bracket 25, the triangular bracket 25 is welded on the bottom plate of the whole device (namely, the bottom surface of the lower box body 27), and the triangular bracket 25 can enhance the stability of the whole device when the motor and the vibrating table work respectively or simultaneously; the output shaft 19 of the motor 22 is of the externally splined shaft type. When the motor 22 works, the motor 22 is controlled by the PLC controller 24, and the motor 22 drives the connecting part on the output shaft to rotate at different rotating speeds and in different directions according to different parameters set by operators.
The vibration table 20 is fixed in the center of the top surface of the third partition 21 in the automatic compacting system; through special design, a cylindrical hole penetrating through the whole vibrating table is arranged in the center of the vibrating table, and an output shaft of a motor can penetrate through the cylindrical hole; 4 threaded holes penetrating through the table top of the vibrating table are formed at intervals of 90 degrees along the center round hole of the table top of the vibrating table and are used for connecting the vibrating table with a vibrating table-turntable connecting structure positioned above the vibrating table.
The structure of the vibrating table-turntable connection structure 18 in the automatic compacting system is similar to a guide shaft support, but the size is larger, a cylindrical hole in the center of the vibrating table-turntable connection structure 18 penetrates through the whole structure, and an output shaft 19 of a motor 22 can enter the vibrating table-turntable connection structure 18 through the cylindrical hole; the bottom of the vibrating table-turntable connecting structure 18 is square round corner rectangle, 4 corners are provided with threaded holes with the diameter identical to that of the threaded holes of the table surface of the vibrating table, the threaded holes penetrate through the square round corner rectangle table body, and 4 screws with proper length and equal length can be used for tightly connecting the vibrating table 20 with the vibrating table-turntable connecting structure 18 in a threaded connection mode, so that the vibrating table and the turntable connecting structure are integrated; the upper part of the vibrating table-rotary table connecting structure 18 is a hollow cylinder with a certain thickness, and an annular baffle structure (i.e. an inner flange) is arranged along the inner wall of the cylinder at the position 1/2 of the height of the cylinder from the top surface of the cylinder to divide the inner space of the cylinder into an upper part and a lower part, the diameter of a central circular hole of the annular baffle structure is smaller than that of a central cylinder hole of the connecting structure, and an output shaft 19 of a motor 22 can pass through the circular hole.
The transfer plate in the automatic compacting system comprises a plate surface 15 and a rotary plate base 16, and a safety barrier 14 is arranged on the plate surface 15; the disc surface 15 is an iron circular plate, a regular hexagon hole with the same side length as the protruding part of the regular hexagon cylinder at the outer bottom of the closed end cap plug of the sand filling model pipe 13 is arranged in the center of the iron plate, and under the condition of complete alignment, the protruding part of the regular hexagon cylinder at the outer bottom of the closed end cap plug of the sand filling model pipe 13 can be inserted into the regular hexagon hole, in the condition, the contact part of the sand filling model pipe 13 and the disc surface 15 is fully stuck, the sand filling model pipe 13 and the disc surface 15 can be equivalent to be a whole, and the sand filling model pipe 13 and the disc surface 15 synchronously move in the same mode; in order to prevent the sand filling model pipe 13 inserted on the disk surface 15 from accidentally falling off under the condition of high-speed rotation or high-speed vibration and then outwards flying out or falling down to damage an instrument, a transparent PVC hollow cylinder with a certain height and a diameter slightly larger than that of the sand filling model pipe 13 is fixedly arranged in the center of the disk surface 15 to serve as a safety barrier 14; the turntable base 16 is an iron hollow cylinder with the height slightly higher than the height of the inner cylinder space of the upper part of the vibrating table-turntable connecting structure 18, and the top surface of the hollow cylinder is connected with the bottom surface of the turntable 15 in a welding mode, so that the turntable surface 15 and the turntable base 16 are integrated, and the turntable surface 15 and the turntable base 16 synchronously move in the same mode; an inner spline housing with the same diameter is embedded in the bottom surface of the turntable base 16, the inner spline housing is matched with an external spline shaft extending output shaft of the motor 22, main basic parameters of the inner spline housing and the spline part of the output shaft are the same, the height of the inner spline housing is slightly higher than that of the top of the spline shaft, and after the output shaft of the motor is connected with the inner spline housing, the motor can drive the turntable base and the disc surface and sand filling model pipe on the turntable base to synchronously rotate; a steel ball type thrust bearing 17 which consists of a thrust washer and a plurality of rolling bodies and has the same outer diameter but larger inner diameter than the outer diameter is welded below the internal spline housing; the diameter of the turntable base 16 is between the inner diameter of the vibrating table-turntable connecting structure 18 and the inner diameter of the annular baffle structure, the turntable base 16 can be arranged on the annular baffle structure, the whole turntable is contacted with the annular baffle through a plurality of rolling bodies, the rolling bodies convert surface-to-surface contact into point-surface contact, and the friction between the bottom surface of the turntable base and the top surface of the annular baffle when the motor output shaft drives the turntable to rotate can be obviously reduced. When the equipment is maintained in daily life, lubricating oil is smeared on the contact part of the rolling body of the steel ball type thrust bearing and the annular baffle structure in time, so that the friction resistance suffered in the rotation process can be further reduced; when the vibrating table 20 works, the vibrating table-turntable connecting structure 18 in threaded connection with the vibrating table vibrates along with the vibrating table, the annular baffle structure in the vibrating table-turntable connecting structure 18 drives the turntable base 16 with the steel ball type thrust bearing welded at the bottom of the turntable base to vibrate along with the vibrating table, and the spline housing slightly moves up and down because the height of the spline shaft is slightly larger than that of the spline housing, so that the spline housing can not influence the contact of the spline shaft and each tooth of the spline housing in the horizontal direction, and the spline shaft can drive the spline housing in a vibrating state to rotate, so that the turntable can drive the sand filling model pipe inserted on the turntable to vibrate and rotate simultaneously.
An intelligent control system: the automatic sand filling and compacting system comprises a first human-computer interface 2, a second human-computer interface 23 and a PLC 24, wherein the PLC is used for carrying out logic judgment on different input information from the first human-computer interface 2, the second human-computer interface 23 and a weighing sensor and then outputting different control instructions to control different components in other systems to carry out a series of operations by running edited programs stored in a memory of the PLC, so that the functions of controlling a filling system and an automatic compacting system to finish two procedures of sand filling and compacting are achieved.
The second human-machine interface 23 in the intelligent control system includes 1 device start button, 1 shutdown button, 4 operation mode selection buttons, and 6 operation parameter adjustment knobs. The 4 modes of operation include: an automatic filling mode, in which the first electromagnetic valve 8, the second electromagnetic valve 9, the third electromagnetic valve 10, the first weighing sensor 11, the second weighing sensor 12, the motor 22 and the vibration table 20 are connected with a control circuit of a PLC controller at the same time when the filling system is controlled to fill sand for the sand filling model pipe according to a program, or the PLC controller is controlled to drive the turntable and the sand filling model pipe which is inserted on the turntable to jointly rotate, or the vibration table is controlled to drive the turntable and the sand filling model pipe which is inserted on the turntable to synchronously vibrate in the vertical direction, or the motor and the vibration table are controlled to simultaneously make the turntable and the sand filling model pipe which is inserted on the turntable vibrate when rotating; a rotating mode, in which only the motor is connected to a control circuit of the PLC, and the motor drives the turntable and the sand filling model pipe inserted on the turntable to rotate together; in the vibration mode, only the vibration table is connected to a control circuit of the PLC controller, and drives the turntable and the sand filling model pipe inserted on the turntable to synchronously vibrate in the vertical direction; and in the rotation and vibration mode, the motor and the vibration table are connected into the PLC control circuit at the same time, and the turntable and the sand filling model pipe inserted on the turntable vibrate while rotating. The 6 operating parameters include: the rotation direction is as follows: forward or reverse unidirectional rotation; forward and reverse bidirectional rotation; the rotation speed is divided into 100r/min, 150r/min, 200r/min, 250r/min and 3000r/min; rotation alternating interval: namely, the motor drives the connecting component to alternately rotate forward and reversely through the output shaft, and only aiming at the condition of bidirectional rotation, the unidirectional rotation defaults to zero and is divided into 2s, 4s, 6s, 8s and 10s; the vibration frequency ranges from 1Hz to 400Hz; the vibration sweep frequency range is 1 Hz-400 Hz; the amplitude is 0-5 mm. The PLC controller is arranged on the device bottom plate; the PLC controller is respectively connected with the weighing sensor, the first human-computer interface 2, the second human-computer interface, the electromagnetic valve, the motor and the vibrating table, so that the input circuit and the output circuit are correctly connected.
Taking filling 500g of filling sand into the sand filling model pipe 13 for 4 times, and adopting three compaction modes of a rotation mode, a vibration mode, rotation and a vibration mode in sequence after filling, so that the filling sand is uniformly distributed and fully compacted in the sand filling model pipe, for example, the method comprises the following steps:
(1) Sliding and opening a sand inlet cover plate 1 above the sand inlet, pouring filling sand into the first funnel through the sand inlet according to the filling sand amount in the first funnel 3, and pouring a large amount of filling sand if no filling sand remains or less filling sand remains in the first funnel; if a large amount of residual filling sand is left in the first hopper, pouring a small amount of filling sand or not pouring the filling sand;
(2) Removing the upper box body 26, putting the sand filling model pipe 13 into the safety barrier 14, and inserting the regular hexagon bulge at the bottom of the outer side of the sealing end cap of the sand filling model pipe 13 into the regular hexagon hole in the center of the disk surface 15;
(3) Clicking keys (5, 0, confirm) on a first human-computer interface (2) in sequence (500 g of sand is filled), dividing into times (4) and inputting (4) the sand is filled into a sand filling model pipe, the input is that the input sand filling amount and dividing information are correct, and the two information are input to a PLC (programmable logic controller) through an input circuit);
(4) Firstly selecting an automatic filling mode in a second man-machine interface 23, setting the values of three parameters including a rotation direction, a rotation speed and alternating intervals through 3 parameter adjusting knobs, and finally pressing a device starting button;
(5) The electric appliance component and the motor of the filling system are connected into a PLC control circuit at the same time, and the PLC controller firstly controls the filling system; the first weighing sensor 11 is connected to a PLC control circuit, the PLC controller enables the first electromagnetic valve to be opened, and filling sand in the first hopper flows downwards through the valve to enter the second hopper; the second electromagnetic valve is in a closed state, and as the filling sand enters the second hopper, the first weighing sensor starts to record data, and when the weighing result of the first weighing sensor read by the PLC controller reaches 500g, the PLC controller closes the first electromagnetic valve, and the filling sand stops entering the second hopper; after the PLC controller continuously reads the same non-zero data from the first weighing sensor for 5 seconds, the second weighing sensor is connected to a PLC control circuit, the PLC controller enables the second electromagnetic valve to be opened, and filling sand in the second hopper flows downwards through the valve to enter the third hopper; when the PLC reads that the weighing result of the second weighing sensor reaches 125g, the PLC enables the second electromagnetic valve to be closed, and the filling sand stops entering the third hopper; after the PLC controller reads the same non-zero data from the second weighing sensor for 5 seconds continuously, the PLC controller enables the third electromagnetic valve to be opened; when the third electromagnetic valve is opened, the PLC controller controls the motor to start working, the motor drives the turntable base and the turntable base to rotate through the output shaft, the sand filling model pipe below the third electromagnetic valve and inserted in the center of the turntable rotates along with the turntable according to parameters preset at the second man-machine interface 23, and the sand filling in the third hopper flows downwards through the valve to enter the sand filling model pipe in a rotating state; the weighing result of the second weighing sensor is reduced because the filling sand continuously flows out of the third hopper and flows into the sand filling model pipe, when the weighing result is zero, the third electromagnetic valve is closed, the motor stops running, and the sand filling model pipe stops rotating, namely, the sand filling model pipe keeps rotating all the time in the whole process that the filling sand flows into the sand filling model pipe from the third hopper through the third electromagnetic valve, so that the filling sand can be uniformly distributed in the sand filling model pipe to a certain extent; after the continuous 5s reading the weighing result of 0 from the second weighing sensor, the PLC controller enables the second electromagnetic valve to be opened again, and the filling sand in the second hopper flows downwards through the valve to enter the third hopper; when the PLC reads that the weighing result of the second weighing sensor reaches 125g, the PLC enables the second electromagnetic valve to be closed, and the filling sand stops entering the third hopper; after the PLC controller reads the same non-zero data from the second weighing sensor for 5 seconds continuously, the PLC controller enables the third electromagnetic valve to be opened; the PLC controls the motor again, the motor drives the turntable to rotate through the output shaft, the sand filling model pipe rotates along with the turntable with parameters preset at the second human-computer interface 23, and the sand filling in the third hopper flows downwards through the valve to enter the sand filling model pipe in a rotating state; the weighing result of the second weighing sensor is continuously reduced, when the weighing result is zero, the third electromagnetic valve is closed again, the motor stops running, and the sand filling model pipe stops rotating; after the continuous 5s reads the weighing result of 0 from the second weighing sensor, the PLC controller enables the second electromagnetic valve to be opened for the third time, the filling sand in the second hopper enters the third hopper, when the weighing result of the second weighing sensor read by the PLC controller reaches 125g, the second electromagnetic valve is closed, the PLC controller reads the same non-zero data from the second weighing sensor for the continuous 5s, the third electromagnetic valve is opened for the third time, the filling sand model pipe rotates with the turntable for the third time according to the preset parameters at the second man-machine interface 23, the filling sand in the third hopper enters the sand model pipe in a rotating state, and when the weighing result of the second weighing sensor is zero, the third electromagnetic valve is closed for the third time, the motor stops running, and the sand model pipe stops rotating; after the second electromagnetic valve is opened and closed for three times, the PLC reads that the weighing result of the first weighing sensor reaches 125g, the second weighing sensor exits the PLC control circuit, the PLC enables the second electromagnetic valve and the third electromagnetic valve to be opened simultaneously, the PLC controls a motor, the motor drives a turntable to rotate through an output shaft, a sand filling model pipe rotates along with the turntable with parameters preset at a second human-computer interface 23, and the residual sand in the second hopper sequentially passes through the second electromagnetic valve, the third hopper and the sand filling model pipe in a rotating state; the filling sand in the second hopper flows out completely, the weighing result of the first weighing sensor is cleared, the PLC controller continuously reads the 0 weighing result from the first weighing sensor for 5 seconds, the first weighing sensor exits the PLC control circuit, the PLC controller enables the second electromagnetic valve and the third electromagnetic valve to be powered off, the two valves are closed, the motor stops running, the sand filling model pipe stops rotating, and the automatic filling process in the automatic filling mode is finished;
(6) Firstly selecting a rotation mode in the second human-computer interface 23, setting the values of three parameters including rotation direction, rotation speed and alternate intervals through 3 parameter adjusting knobs, and finally pressing a device starting button;
(7) The alternating current motor is connected to the PLC control circuit, the PLC controller controls the motor, the motor drives the turntable to rotate through the output shaft, and the sand filling model pipe rotates along with the turntable with 3 rotation parameters preset on the second human-computer interface 23;
(8) Firstly selecting a vibration mode in the second human-computer interface 23, then setting the values of three parameters, namely a vibration frequency range, a vibration sweep frequency range and an amplitude, through 3 parameter adjusting knobs, and finally pressing a device starting button;
(9) The vibration table is connected with a PLC control circuit, the PLC controller controls the vertical vibration table, and the vertical vibration table drives a connecting structure connected with the vertical vibration table through 3 vibration parameters preset on a second human-computer interface 23, a rotary table arranged on an annular baffle structure in the connecting structure and a sand filling model pipe inserted in the center of the rotary table to vibrate together;
(10) Selecting a rotation and vibration mode at the second human-computer interface 23, setting values of six parameters including rotation direction, rotation speed, alternate interval, vibration frequency range, vibration sweep frequency range and amplitude through 6 parameter adjusting knobs, and finally pressing a device starting button;
(11) The alternating current motor and the vertical vibration table are simultaneously connected into a PLC control circuit, the PLC control circuit controls the alternating current motor and the vertical vibration table, and the alternating current motor drives the vertical vibration table to jointly rotate through an output shaft by 3 rotation parameters preset in the second human-computer interface 23, a turntable in a vibration state and a sand filling model pipe inserted in the center of the turntable by 3 vibration parameters preset in the second human-computer interface 23;
(12) Removing the upper box body 26, slowly pulling the sand filling model pipe which is uniformly distributed and fully compacted in a series of operations out of the regular hexagon hole in the center of the disc surface, taking out the sand filling model pipe from the upper space of the lower box body 27, pressing a shutdown button of the second man-machine interface 23, powering off the device, and ending the whole sand filling process from filling to compacting;
(13) The upper housing 26 is moved back to the original position.
According to the technical scheme, the process of filling the sand filling model pipe for experiments is changed from traditional manual completion to automatic control completion, quantitative control of each link in the whole process is realized, and the sand filling effect is remarkably improved; the limitation of the sand filling step on the number of operators and the sex of operators when the sand filling model pipe is used for the indoor simulation experiment is obviously reduced; the experimental time is obviously shortened, and the project period can be shortened to a certain extent.
Claims (8)
1. The sand filling model pipe filling and compacting device is characterized by comprising a filling system and a vibration compacting system, wherein the filling system comprises a first funnel (3), a second funnel (4) and a third funnel (5), an outlet of the first funnel (3) is arranged above an inlet of the second funnel (4) and is used for discharging materials into the second funnel (4), an outlet of the second funnel (4) is arranged above an inlet of the third funnel (5) and is used for discharging materials into the third funnel (5), a first electromagnetic valve (8), a second electromagnetic valve (9) and a third electromagnetic valve (10) for controlling discharging materials are respectively arranged at the outlets of the first funnel (3), the second funnel (4) and the third funnel (5), and a first weighing sensor (11) and a second weighing sensor (12) are respectively arranged on the second electromagnetic valve (9) and the third electromagnetic valve (10);
the vibration compacting system comprises a vibration table (20), a motor (22) and a turntable, wherein the turntable is arranged on the vibration table surface of the vibration table (20), and the vibration table (20) can drive the turntable to vibrate; the output shaft of the motor (22) is connected with the turntable through a spline, when the vibrating table (20) drives the turntable to vibrate, the motor (22) can drive the turntable to rotate, the turntable can be detachably connected with the lower end of the sand filling model pipe (13), and after the sand filling model pipe (13) is arranged on the turntable, the upper end of the sand filling model pipe (13) is opposite to the outlet of the third hopper (5) and can receive materials discharged from the outlet of the third hopper (5);
The sand filling model pipe filling and compacting device further comprises a vibrating table-rotating disc connecting structure (18), wherein the vibrating table-rotating disc connecting structure (18) is of a hollow cylindrical structure, the lower end of the vibrating table-rotating disc connecting structure (18) is fixedly connected with the table top of the vibrating table (20), an annular inner flange is arranged on the inner wall of the vibrating table-rotating disc connecting structure (18), an inner cavity of the vibrating table-rotating disc connecting structure (18) is an upper cavity above the inner flange, and a lower cavity below the inner flange; the turntable comprises a turntable surface (15) and a turntable base (16) arranged at the center of the lower surface of the turntable surface (15); the turntable base (16) is arranged in the upper cavity, and the lower end of the turntable base (16) is propped against the inner flange; the motor (22) is arranged below the vibrating table (20), and an output shaft (19) of the motor (22) penetrates through the vibrating table (20) and extends upwards from the centers of the lower cavity and the inner flange, and is connected with the turntable base (16) through a spline; the lower end of the sand filling model pipe (13) is detachably connected with the disk surface (15);
the sand filling mould pipe filling and compacting device further comprises an upper box body and a lower box body, wherein the upper box body is arranged above the lower box body, the lower box body is free of a top surface, the upper box body and the lower box body can be connected in a sliding manner, and the upper box body can slide along one side of the lower box body to the other side opposite to the one side; the upper box body is sequentially provided with a first partition plate (6) and a second partition plate (7) from top to bottom between the top surface and the bottom edge of the upper box body, the first funnel (3) is arranged between the top surface of the upper box body and the first partition plate (6), the second funnel (4) is arranged between the first partition plate (6) and the second partition plate (7), and the third funnel (5) is arranged between the second partition plate (7) and the bottom surface of the upper box body; the first clapboard (6), the second clapboard (7) and the bottom surface of the upper box body are respectively provided with a central opening for the first electromagnetic valve (8), the second electromagnetic valve (9) and the third electromagnetic valve (10) to pass through; the first weighing sensor (11) and the second weighing sensor (12) are respectively positioned below the second partition plate (7) and the bottom surface of the upper box body; the vibration compacting system is arranged in the lower box body.
2. The filling and compacting device of sand filling mould pipes according to claim 1, characterized in that a safety barrier (14) for preventing the sand filling mould pipe (13) from falling off is coaxially arranged on the disc surface (15).
3. The sand filling and compacting device according to claim 1, characterized in that a ball type thrust bearing is arranged between the lower end of the turntable base (16) and the inner flange.
4. The filling and compacting device of sand filling mould pipe according to claim 1, characterized in that the center of the lower end of the sand filling mould pipe (13) is provided with a polygonal column structure, the center of the disc surface (15) is provided with a groove adapted to the polygonal column structure, and the sand filling mould pipe (13) can be inserted into the groove through the polygonal column structure.
5. The sand filling and compacting device according to claim 1, wherein a third partition plate (21) is arranged in the lower box body, the vibrating table (20) is arranged on the upper portion of the third partition plate (21), the motor (22) is arranged on the lower portion of the third partition plate (21), and a through hole for the output shaft of the motor to pass through is formed in the third partition plate (21).
6. The sand filling and compacting device according to claim 1, further comprising an intelligent control system, wherein the intelligent control system comprises a first man-machine interface (2), a second man-machine interface (23) and a PLC controller (24), and the first solenoid valve (8), the second solenoid valve (9), the third solenoid valve (10), the first weighing sensor (11), the second weighing sensor (12), the first man-machine interface (2), the vibrating table (20), the motor (22) and the second man-machine interface (23) are all connected with the PLC controller; the first human-computer interface (2) is used for setting sand filling quality and sand filling times; the second man-machine interface (23) is used for setting the vibration mode of the vibration table (20) and the rotating speed of the motor (22).
7. A sand-filled mould tube filling and compacting method, characterized in that the sand-filled mould tube filling and compacting device according to claim 1 is adopted, comprising the following steps:
s1, filling a first hopper (3) with sufficient filling sand;
s2, mounting an empty sand filling model pipe (13) on a turntable;
s3, controlling the vibration table (20) to vibrate at preset frequency and amplitude, and controlling the motor (22) to drive the rotary table to rotate at preset rotating speed, wherein the rotary table drives the sand filling model pipe (13) to synchronously rotate;
s4, controlling the first electromagnetic valve (8) to be opened, discharging the filling sand in the first hopper (3) to the second hopper (4), and closing the first electromagnetic valve (8) when the filling sand amount in the second hopper (4) reaches a preset value;
s5, controlling the second electromagnetic valve (9) to be opened, and discharging the filling sand in the second hopper (4) to the third hopper (5) in a separated mode until the filling sand in the second hopper (4) is discharged;
when the first weighing sensor (11) weighs the filling sand amount in the third funnel (5) in the process that the filling sand in the second funnel (4) is discharged to the third funnel (5) each time, after the filling sand amount in the third funnel (5) reaches a preset value, the second electromagnetic valve (9) is controlled to be closed, the third electromagnetic valve (10) is controlled to be opened, the filling sand in the third funnel (5) is discharged to the filling sand model pipe (13), and when the second weighing sensor (12) detects that the filling sand amount in the third funnel (5) is zero, the third electromagnetic valve (10) is closed;
And S6, after the vibration of the vibration table (20) is finished and the rotation of the motor (22) is finished, controlling the vibration table (20) and the motor (22) to stop, and finishing filling and compacting the sand filling model pipe.
8. The sand filling and compacting method according to claim 7, wherein the sand filling and compacting device further comprises an intelligent control system, the intelligent control system comprises a first man-machine interface (2), a second man-machine interface (23) and a PLC (programmable logic controller) (24), and the first electromagnetic valve (8), the second electromagnetic valve (9), the third electromagnetic valve (10), the first weighing sensor (11), the second weighing sensor (12), the first man-machine interface (2), the vibrating table (20), the motor (22) and the second man-machine interface (23) are all connected with the PLC; the first human-computer interface (2) is used for setting sand filling quality and sand filling times; the second human-machine interface (23) is used for setting the vibration mode of the vibration table (20) and the rotating speed of the motor (22);
in S3, setting sand filling quality and sand filling times through a first human-computer interface (2), and setting a vibration mode of a vibration table (20) and the rotating speed of a motor (22) through a second human-computer interface (23);
In S4 and S5, the PLC controls the first electromagnetic valve (8), the second electromagnetic valve (9) and the third electromagnetic valve (10) and controls the vibrating table (20) and the motor (22) to work through data acquired by the first weighing sensor (11) and the second weighing sensor (12) and the arrangement of the first human-computer interface (2) and the second human-computer interface (23).
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| CN110005408B (en) * | 2019-05-17 | 2020-10-09 | 重庆科技学院 | Multi-point compacting device for sand filling process of model in thickened oil thermal recovery experiment |
| CN113107459B (en) * | 2021-03-29 | 2022-02-15 | 西安石油大学 | Oil displacement sand pipe model sand filling-discharging integrated device and experimental method |
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