An experimental device for testing wax deposition of waxy crude oil

Abstract

The invention relates to the technical field of oil product characteristic testing, and in particular to an experimental device for wax deposition testing of waxy crude oil, comprising a warm magnetic stirrer, a water bath and a fixed frame arranged on the warm magnetic stirrer, a beaker is placed in the water bath, a rotatable support seat is fixedly connected to the top of the warm magnetic stirrer, a gravity sensor is bolted to the rotating end of the support seat, the fixed frame is arranged above the warm magnetic stirrer, an F-shaped frame is fixedly connected to the outer wall of the fixed frame, and a rotating frame is arranged below the F-shaped frame. Through the arrangement of the above structure, the invention can automatically take out the beaker on the placement plate and transfer it to the water bath for wax deposition testing of waxy crude oil, and then after the test is completed, the beaker with crude oil can be automatically taken out and the crude oil can be poured into a collection box, so that the whole process does not require the detection personnel to replace the beaker, thereby improving the intelligence and automation level of the experiment.

Description

Technical Field

[0001] The invention relates to the technical field of oil product characteristic testing, in particular to an experimental device for wax deposition testing of waxy crude oil. Background Art

[0002] Most of the crude oil produced in my country is high-viscosity crude oil that is easy to solidify. Easy-to-solidify crude oil refers to crude oil with a high wax content, often called "waxy crude oil". Waxy crude oil has a high paraffin content. When the crude oil temperature is high, the paraffin in the crude oil is in a molten state. When the heat loss temperature of the crude oil decreases, solid phase substances mainly composed of paraffin will precipitate, crystallize, deposit and even block the pipeline from the crude oil, which greatly affects the pipeline's transportation capacity and efficiency.

[0003] Therefore, people began to use organic solvents to dissolve wax particles, thereby reducing the problem of wax deposition. Organic solvents have good solubility and thermal stability, and can quickly dissolve wax particles at low temperatures and maintain stability at high temperatures. At the same time, the use of organic solvents also reduces energy consumption and equipment complexity. The development of wax dissolution technology also involves the advancement of wax deposition monitoring and prediction technology. Through monitoring methods such as temperature sensors, pressure sensors and wax deposition sample analysis, people can understand the wax deposition situation in a timely manner and take corresponding wax dissolution measures based on the prediction results.

[0004] However, in the existing experimental device for wax deposition test of waxy crude oil, multiple experiments will be compared during the experiment to ensure the accuracy of the experimental results. However, at the end of each experiment, the experimenter is required to replace the crude oil to ensure the accuracy of subsequent experimental data. However, the heating temperature of the crude oil during the experiment is generally between 80°C and 120°C, and the temperature of the beaker after the experiment is relatively high. Manual replacement of the beaker is prone to the risk of scalding, while reducing the intelligence and automation level of the experiment.

[0005] Therefore, an experimental device for wax deposition test of waxy crude oil is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose an experimental device for wax deposition test of waxy crude oil.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: an experimental device for wax deposition test of waxy crude oil, comprising a warm magnetic stirrer, and a water bath and a fixed frame arranged on the warm magnetic stirrer, a beaker is placed in the water bath, a rotatable support seat is fixedly connected to the top of the warm magnetic stirrer, a gravity sensor is bolted to the rotating end of the support seat, the fixed frame is arranged above the warm magnetic stirrer, an F-shaped frame is fixedly connected to the outer wall of the fixed frame, a rotating frame is provided below the F-shaped frame, two clamping plates are laterally slidably connected to the inner side of the rotating frame, and semicircular arc rings for clamping the beaker are fixedly connected to the rear sides of the clamping plates, an upper plate for limiting the top position of the beaker is provided at the top of the rotating frame, a placing table is provided next to the warm magnetic stirrer, a moving mechanism for driving the F-shaped frame to move laterally is provided on the fixed frame, and a clamping mechanism for driving the clamping plate to move toward the middle is provided on the rotating frame.

[0008] In the above technical scheme, further, the clamping mechanism includes an upper electric telescopic cylinder, which is fixedly connected to the bottom end of the rotating frame, and a U-shaped plate is slidably connected to the inner side of the rotating frame, and the ends of the U-shaped plate are fixedly connected to inclined plates inclined to both sides, and a pair of slide grooves are provided at the bottom end of the rotating frame, and the bottom end of the U-shaped plate is fixedly connected to a U-shaped connecting rod relative to the internal position of the slide groove, and the output end of the upper electric telescopic cylinder is fixedly connected to the side wall of the connecting rod, the splint is inclinedly arranged on the away side, and the splint is provided with a groove on the close side, and a number of return springs are fixedly connected between the grooves, and a circular groove is provided at the bottom end of the upper plate, a round rod is fixedly connected to the inner side of the circular groove, and the bottom end of the round rod passes through and is rotatably connected to the inner side of the rotating frame.

[0009] In the above technical solution, further, a pull rope is wrapped around the outer wall of the round rod, one end of the pull rope is fixedly connected to the outer wall of the round rod, a horizontal plate is slidably connected to the inner side of the rotating frame, the other end of the pull rope is fixedly connected to the side wall of the horizontal plate, the side wall of the U-shaped plate is fixedly connected with a push plate for pushing the horizontal plate to move, an upper volute spring is provided on the inner side of the circular groove, one end of the upper volute spring is fixedly connected to the inner side of the circular groove, and the other end of the upper volute spring is fixedly connected to the top of the rotating frame.

[0010] In the above technical solution, further, a pair of limit blocks for limiting the rotation angle of the upper plate are fixedly connected to the top of the rotating frame, the upper plate is arranged on the side away from the upper guide nozzle of the beaker, and the bottom end of the upper plate is in contact with the top of the beaker.

[0011] In the above technical solution, further, the moving mechanism includes a driving motor, which is fixedly connected to the side wall of the fixed frame, and a through slot is opened at the top of the fixed frame, and a threaded rod is rotatably connected to the inner side of the through slot, and the output end of the driving motor passes through the inner side of the through slot and is fixedly connected to the side wall of the threaded rod, a slider is slidably connected to the inner side of the through slot, and the threaded rod is threadedly connected to the inner wall of the slider, the slider is fixedly connected to the inner side of the F-type frame, and a lower electric telescopic cylinder is fixedly connected to the side wall of the F-type frame, and the output end of the lower electric telescopic cylinder is fixedly connected to the fixed frame, the rotating frame is rotatably connected to the rear side of the fixed frame, and a rotating motor is fixedly connected to the inner side of the rotating frame, and the output end of the rotating motor passes through the rear side of the fixed frame and is fixedly connected to the side wall of the rotating frame.

[0012] In the above technical solution, further, a pair of inner grooves are opened on the front side of the fixing frame, and touch sensors are fixedly connected inside the inner grooves. The touch sensors are electrically connected to the lower electric telescopic cylinder and the rotating motor through the controller.

[0013] In the above technical solution, further, a collection box for collecting crude oil is provided at one end of the top of the placing table, and a placing plate for placing a beaker is rotatably connected to the other end of the top of the placing table. A cleaning rack for placing a beaker is provided on the placing plate, and four placing grooves are equidistantly provided on the placing plate. Oil absorbent pads are provided on the inner sides of the four placing grooves. A loading motor is fixedly connected to the bottom end of the placing table, and an output end of the loading motor passes through the top of the placing table and is fixedly connected to the bottom of the placing plate.

[0014] In the above technical solution, further, four openings are equidistantly provided at the top of the cleaning rack, semi-circular arc plates are fixedly connected to the inner side of the cleaning rack relative to the openings, sliding frames are fixedly connected to both ends of the four openings, sliding frames are slidably connected between the sliding frames, a number of insertion rods for fixing beakers are fixedly connected to the top of the sliding frame, and clamping springs are fixedly connected between the inner side of the sliding frame and the side wall of the sliding frame.

[0015] In the above technical scheme, further, a positioning block is rotatably connected to the top of the placing plate, a circular hole is opened at the bottom end of the positioning block, a lower scroll spring is arranged on the inner side of the circular hole, one end of the lower scroll spring is fixedly connected to the inner side of the circular hole, and the other end of the lower scroll spring is fixedly connected to the top of the placing plate, a circular hole is opened through the side wall of the positioning block, extrusion rods are slidably connected on both sides of the circular hole, an arc-shaped locking block is fixedly connected on the side away from the extrusion rod, a locking groove matched with the locking block is opened on the inner side of the cleaning rack, and a locking spring is fixedly connected between the extrusion rods.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can automatically take out the beaker on the placement plate and transfer it to a water bath to carry out wax deposition test of waxy crude oil through the arrangement of a semicircular arc ring, a moving mechanism and a clamping mechanism. After the test is completed, the beaker with the crude oil can be automatically taken out and poured into a collection box. Therefore, the testing personnel do not need to replace the beaker during the whole process, thereby improving the intelligence and automation level of the experiment.

[0018] 2. The present invention can automatically place the beaker filled with crude oil upside down on the cleaning rack through the cooperation of the rotating motor, the cleaning rack, the sliding rack and the moving mechanism. Therefore, after the experiment, the cleaning rack can be directly picked up and placed in the beaker cleaning machine to directly clean the beaker, avoiding the risk of scalding caused by contact between the experimenter and the beaker, thereby further improving the automation efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the front three-dimensional structure of the experimental device of the present invention;

[0020] Figure 2 The appended Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the positioning block, the placement plate and the feeding motor separated according to the present invention;

[0022] Figure 4 The appended Figure 3 A schematic diagram of the partially enlarged structure at B in the middle;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the rotating frame of the present invention when viewed from above;

[0024] Figure 6 It is a bottom-up three-dimensional structural schematic diagram of the clamping mechanism of the present invention;

[0025] Figure 7 The appended Figure 6 A schematic diagram of the partially enlarged structure at C in the middle;

[0026] Figure 8 It is a schematic diagram of a three-dimensional structure in which a fixing frame and an F-shaped frame are separated according to the present invention;

[0027] Fig. 9 It is a schematic diagram of the overall appearance structure of the warm magnetic stirrer and the fixing frame of the present invention.

[0028] In the figure: 1. Magnetic stirrer; 2. Water bath; 3. Beaker; 4. Support seat; 5. Gravity sensor; 6. Fixed frame; 7. F-shaped frame; 8. Rotating frame; 9. Clamp; 10. Semicircular ring; 11. Upper plate; 12. Upper electric telescopic cylinder; 13. U-shaped plate; 14. Inclined plate; 15. Connecting rod; 16. Return spring; 17. Round rod; 18. Pull rope; 19. Horizontal plate; 20. Push plate; 21. Upper scroll spring; 22. Limit block; 23. Drive motor; 24. Thread rod; 25, slider; 26, lower electric telescopic cylinder; 27, fixed frame; 28, rotating motor; 29, touch sensor; 30, collecting box; 31, placing plate; 32, cleaning rack; 33, feeding motor; 34, semi-circular arc plate; 35, sliding frame; 36, sliding rack; 37, insert rod; 38, clamping spring; 39, positioning block; 40, lower scroll spring; 41, extrusion rod; 42, locking block; 43, locking groove; 44, locking spring; 45, placing table; 46, oil absorption pad. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] like Figure 1-Figure 9An experimental device for wax deposition test of waxy crude oil shown in the figure comprises a warm magnetic stirrer 1, a water bath 2 and a fixing frame 6 arranged on the warm magnetic stirrer 1, a beaker 3 is placed in the water bath 2, a rotatable support seat 4 is fixedly connected to the top of the warm magnetic stirrer 1, a gravity sensor 5 is bolted to the rotating end of the support seat 4, the fixing frame 6 is arranged above the warm magnetic stirrer 1, an F-shaped frame 7 is fixedly connected to the outer wall of the fixing frame 6, a rotating frame 8 is arranged below the F-shaped frame 7, two clamps 9 are laterally slidably connected to the inner side of the rotating frame 8, and a semicircular arc ring 10 for clamping the beaker 3 is fixedly connected to the rear side of the clamp 9. It should be noted that the semicircular arc ring 10 is not The clamping is achieved by clamping the outer wall of the beaker 3, and the semicircular arc ring 10 is clamped under the protruding ring on the top of the beaker 3 to limit the downward sliding of the beaker 3. Since the guide nozzle of the beaker 3 is not at the same level as the protruding ring, the semicircular arc ring 10 can be provided with a groove under the guide nozzle to ensure that the beaker 3 is in a horizontal state when it is lifted up, thereby ensuring the stability during the subsequent operation. The top of the rotating frame 8 is provided with an upper plate 11 for limiting the top position of the beaker 3, a placing table 45 is provided next to the warm magnetic stirrer 1, a moving mechanism for driving the F-type frame 7 to move horizontally is provided on the fixed frame 6, and a clamping mechanism for driving the clamping plate 9 to move toward the middle is provided on the rotating frame 8;

[0032] The clamping mechanism includes an upper electric telescopic cylinder 12, which is fixedly connected to the bottom end of the rotating frame 8. A U-shaped plate 13 is slidably connected to the inner side of the rotating frame 8. The ends of the U-shaped plate 13 are fixedly connected to inclined plates 14 inclined to both sides. A pair of slide grooves are provided at the bottom end of the rotating frame 8. A U-shaped connecting rod 15 is fixedly connected to the bottom end of the U-shaped plate 13 relative to the inner position of the slide groove. The output end of the upper electric telescopic cylinder 12 is fixedly connected to the side wall of the connecting rod 15. The splint 9 is tilted away from the side, and a groove is provided on the side close to the splint 9. A number of reset springs 16 are fixedly connected between the grooves. A circular groove is provided at the bottom end of the upper plate 11. A round rod 17 is fixedly connected to the inner side of the circular groove, and the bottom end of the round rod 17 penetrates and is rotatably connected to the inner side of the rotating frame 8.

[0033] A pull rope 18 is wound around the outer wall of the round rod 17, one end of the pull rope 18 is fixedly connected to the outer wall of the round rod 17, a horizontal plate 19 is slidably connected to the inner side of the rotating frame 8, the other end of the pull rope 18 is fixedly connected to the side wall of the horizontal plate 19, a push plate 20 for pushing the horizontal plate 19 to move is fixedly connected to the side wall of the U-shaped plate 13, an upper volute spring 21 is provided on the inner side of the circular groove, one end of the upper volute spring 21 is fixedly connected to the inner side of the circular groove, and the other end of the upper volute spring 21 is fixedly connected to the top of the rotating frame 8;

[0034] The moving mechanism includes a driving motor 23, which is fixedly connected to the side wall of the fixed frame 6. A through slot is provided at the top of the fixed frame 6, and a threaded rod 24 is rotatably connected to the inner side of the through slot. The output end of the driving motor 23 passes through the inner side of the through slot and is fixedly connected to the side wall of the threaded rod 24. A slider 25 is slidably connected to the inner side of the through slot, and the threaded rod 24 is threadedly connected to the inner side wall of the slider 25. The slider 25 is fixedly connected to the inner side of the F-shaped frame 7. A lower electric telescopic cylinder 26 is fixedly connected to the side wall of the F-shaped frame 7. The output end of the lower electric telescopic cylinder 26 is fixedly connected to a fixed frame 27. The rotating frame 8 is rotatably connected to the rear side of the fixed frame 27. A rotating motor 28 is fixedly connected to the inner side of the rotating frame 8. The output end of the rotating motor 28 passes through the rear side of the fixed frame 27 and is fixedly connected to the side wall of the rotating frame 8.

[0035] A collection box 30 for collecting crude oil is provided at one end of the top of the placement table 45. The crude oil after the experiment can be collected and processed through the collection box 30. A placement plate 31 for placing the beaker 3 is rotatably connected to the other end of the top of the placement table 45. Four placement slots are evenly spaced on the placement plate 31.

[0036] When conducting a wax deposition test on waxy crude oil, the tester first pours the crude oil into the beaker 3, and sequentially places the beaker 3 in the placement groove on the placement plate 31, and then controls the drive motor 23 to start and drive the threaded rod 24 to rotate, thereby driving the threaded slider 25 to move, and then drives the F-shaped frame 7, the lower electric telescopic cylinder 26, the fixed frame 27, the rotating frame 8 and the semi-circular ring 10 to move above the placement plate 31, and then controls the lower electric telescopic cylinder 26 to start and drive the fixed frame 27 and the semi-circular ring 10 to move downward, so that the semi-circular ring 10 10 moves to both sides of one of the beakers 3, then controls the upper electric telescopic cylinder 12 to start and drive the connecting rod 15 to move, and at the same time drives the U-shaped plate 13 and the inclined plate 14 to move. At this time, the inclined surface of the inclined plate 14 will squeeze the inclined surface of the clamping plate 9, thereby pushing the clamping plate 9 to slide toward the middle, and at the same time compressing the reset spring 16, and driving the two semi-circular arc rings 10 to move toward the middle, so that the semi-circular arc rings 10 are clamped on the outer wall of the beaker 3, and then under the continued driving of the upper electric telescopic cylinder 12, the clamping plate 9 will be squeezed to the inner side of the U-shaped plate 13, and at the same time When the push plate 20 moves to the side of the horizontal plate 19, the push plate 20 pushes the horizontal plate 19 to move, and at the same time pulls the drawstring 18 to move, and pulls out the rolled-up part of the drawstring 18 on the round rod 17. However, since the other end of the drawstring 18 is fixed to the outer wall of the round rod 17, when the drawstring 18 is pulled out, the round rod 17 and the upper plate 11 are driven to rotate at the same time, and then the upper plate 11 is rotated to the top of the beaker 3, which plays a role in limiting the top of the beaker 3. At the same time, since one end of the upper scroll spring 21 is fixed to the inner side of the circular groove, and the other end is fixed to the rotating frame 8 The top end, therefore, when the upper plate 11 rotates, the upper scroll spring 21 is gradually compressed, and then the upper electric telescopic cylinder 12 is controlled to stop running, and the lower electric telescopic cylinder 26 is controlled to start to retract the output end, and drive the fixed frame 27, the semicircular arc ring 10 and the beaker 3 to move upward, and then the driving motor 23 is controlled to reverse, and the F-shaped frame 7 is driven in the reverse direction to move toward the side of the warm magnetic stirrer 1, and then the beaker 3 is moved into the water in the water bath 2, and then the lower electric telescopic cylinder 26 is controlled to start to drive the fixed frame 27 to move downward, and the beaker 3 is placed in the water bath 2;

[0037] Then, the rotor of the warm magnetic stirrer 1 is placed in the designated position for testing. During the test, the support seat 4 is first rotated to rotate the gravity sensor 5 to the top of the beaker 3, and then the wax ball is fixed with a spiral wire and submerged in the crude oil, and the other end of the spiral wire is hooked on the hook of the gravity sensor 5. Then, the rotor of the warm magnetic stirrer 1 is controlled to start, and the water bath 2 is started to heat the water, and then the beaker 3 and the crude oil are heated to achieve the wax deposition test of the wax-containing crude oil. At this time, the dissolution rate of the wax in the crude oil can be known through the value of the electronic display screen of the gravity sensor 5. The method is as follows: by performing a force analysis on the wax ball, the density of the wax ball is set to ρ 物 , the volume of the wax ball is V 物 , the initial density of the solution is ρ液 , the volume of the solution is V 液 , the pulling force of the hook on the wax ball is F 拉 , the force analysis of the wax ball shows that ρ 液 V 物 +F 拉 =ρ 物 V 物 g, set the wax ball to reduce its volume to V at t 减 At time t, the pull force on the wax ball from the hook is F 1 , P is the dissolution rate (unit: g / t), V 减 =Pt / ρ 物 , the solution density is ρ = ρ 液 +V 减 ρ 物 / V 液 , then the wax ball equilibrium equation at time t is ρg (V 物 -V 减 )+F 1 =ρ 物 (V 物 -V 减 ), by knowing the value of the electronic display screen, that is, F 拉 It can be known that the dissolution rate of the dissolved wax at time t;

[0038] Finally, after the experiment is over, the spiral wire is taken out first, and then the gravity sensor 5 is moved away from above the beaker 3, and then the drill is taken out, and the lower electric telescopic cylinder 26 can be controlled to start driving the fixed frame 27 and the beaker 3 to move upward, and then the drive motor 23 is controlled to rotate forward to drive the beaker 3 to move to the side of the collection box 30, and then when the beaker 3 is completely moved to the top of the collection box 30, the rotating motor 28 can be controlled to start driving the rotating frame 8 to rotate, so that the crude oil after the experiment is poured into the collection box 30 for unified collection and treatment, and then the beaker 3 is turned 180 degrees to make the crude oil completely poured out, and then the drive motor 23 can continue to be controlled to start and move the beaker 3 to the top of the placement plate 31.

[0039] In order to improve the stability of the device during operation, a pair of limit blocks 22 for limiting the rotation angle of the upper plate 11 are fixedly connected to the top of the rotating frame 8. Through the setting of the limit blocks 22, the rotation angle of the upper plate 11 can be limited, thereby improving the accuracy of the limit position of the beaker 3. The upper plate 11 is set on the side away from the guide nozzle of the beaker 3. It should be noted that when the rotating motor 28 flips the rotating frame 8, it rotates slowly, and the rotating motor 28 drives the beaker 3 to flip downward toward the guide nozzle. Therefore, the upper plate 11 is set on the side away from the guide nozzle. It can be avoided that the crude oil in the beaker 3 is poured onto the upper plate 11 during the pouring process, and then when a new beaker 3 is taken later, the crude oil from the last experiment drips into the new beaker 3, affecting the accuracy of the experimental data, and the bottom end of the upper plate 11 is in contact with the top of the beaker 3.

[0040] In order to improve the automation efficiency of the device, a pair of inner grooves are opened on the front side of the fixed frame 6, and touch sensors 29 are fixedly connected inside the inner grooves. The touch sensor 29 is electrically connected to the lower electric telescopic cylinder 26 and the rotating motor 28 through the controller. Through the setting of the touch sensor 29, when the F-type frame 7 moves to the collection box 30, it touches the corresponding touch sensor 29, and then transmits the signal to the controller. The controller controls the rotating motor 28 to start and controls the drive motor 23 to stop running, thereby improving the automation efficiency of the device. When the F-type frame 7 moves to the top of the warm magnetic stirrer 1, it touches the corresponding touch sensor 29, and then transmits the signal to the controller. The controller controls the drive motor 23 to stop running and controls the lower electric telescopic cylinder 26 to start, thereby realizing the automatic operation of the device. The start and stop of the upper electric telescopic cylinder 12 and the feeding motor 33 can be set by the program and run automatically. This is a mature technology in the prior art and will not be described in detail here.

[0041] In order to further improve the convenience of the device, a cleaning rack 32 for placing in the cleaning machine is provided on the placement plate 31, and oil absorption pads 46 are provided inside the four placement grooves. Through the setting of the oil absorption pads 46, when the beaker 3 is inverted on the cleaning rack 32, the dripping crude oil can be absorbed to avoid falling into the placement groove, which is convenient for subsequent processing. The bottom end of the placement table 45 is fixedly connected to a feeding motor 33, and the output end of the feeding motor 33 passes through the top of the placement table 45 and is fixedly connected to the bottom of the placement plate 31;

[0042] Four openings are equidistantly provided at the top of the cleaning rack 32. Semicircular arc plates 34 are fixedly connected to the inner side of the cleaning rack 32 relative to the openings. Sliding frames 35 are fixedly connected to both ends of the four openings. Sliding racks 36 are slidably connected between the sliding frames 35. Several insertion rods 37 for fixing the beaker 3 are fixedly connected to the top of the sliding rack 36. Clamping springs 38 are fixedly connected between the inner side of the sliding frame 35 and the side wall of the sliding rack 36.

[0043] When placing the beaker 3 with crude oil, first pull the insertion rod 37 outward to drive the sliding frame 36 to slide in the sliding frame 35 and compress the clamping spring 38, then the beaker 3 can be placed in the placement groove, and then release the insertion rod 37. Under the elastic force of the clamping spring 38, the sliding frame 36 is pushed to squeeze the beaker 3 between the sliding frame 36 and the semicircular arc plate 34, which can limit the beaker 3 and prevent the beaker 3 from shaking during the rotation of the feeding motor 33. When the beaker 3 is taken out through the semicircular arc ring 10, the squeezing of the sliding frame 36 will be released, and then the sliding frame 36 and the insertion rod 37 are pushed to reset under the elastic force of the clamping spring 38;

[0044] Then, when the driving motor 23 moves the used beaker 3 to the top of the placement plate 31, the lower electric telescopic cylinder 26 can be controlled to start to place the inverted beaker 3 on the sliding frame 36. At this time, the upper plate 11 will be placed on the sliding frame 36. Therefore, after the lower electric telescopic cylinder 26 moves into place, the upper electric telescopic cylinder 12 can be controlled to start, and the operation of the above-mentioned clamping mechanism is repeated in the reverse direction. Then, the upper plate 11 will be driven to rotate and reset under the elastic force of the upper scroll spring 21, and then rotated out from under the beaker 3, and then the beaker 3 falls on the sliding frame 36 and is inserted into a plurality of slots. The semicircular ring 10 releases the clamping of the beaker 3, and the lower electric telescopic cylinder 26 can be controlled to start and drive the semicircular ring 10 to move up and move out from the inverted beaker 3. Then, the loading motor 33 is controlled to start and drive the placement plate 31 to rotate, thereby changing the position of the beaker 3. Then, the operation of taking out the beaker 3 is repeated repeatedly, and the automatic replacement of the beaker 3 function of the device can be realized. The crude oil in the used beaker 3 can be poured out, and the beaker 3 can be inverted on the cleaning rack 32. After the experiment is completed, it can be directly taken to the cleaning machine for cleaning.

[0045] In order to improve the convenience of the device, a positioning block 39 is rotatably connected to the top of the placement plate 31, a circular hole is opened at the bottom of the positioning block 39, a lower scroll spring 40 is arranged inside the circular hole, one end of the lower scroll spring 40 is fixedly connected to the inner side of the circular hole, and the other end of the lower scroll spring 40 is fixedly connected to the top of the placement plate 31, a circular hole is opened through the side wall of the positioning block 39, and extrusion rods 41 are slidably connected to both sides of the circular hole, and an arc-shaped locking block 42 is fixedly connected to the side away from the extrusion rod 41, a locking groove 43 adapted to the locking block 42 is opened on the inner side of the cleaning rack 32, and a locking spring 44 is fixedly connected between the extrusion rods 41;

[0046] When the experiment is over and the beaker 3 needs to be taken out and placed on the cleaning machine for cleaning, the locking block 42 is screwed out of the locking groove 43 by rotating the positioning block 39. At this time, the arc surface of the locking groove 43 will gradually squeeze the locking block 42 to slide toward the middle, and drive the squeezing rod 41 to move toward the middle, gradually compressing the locking spring 44. At the same time, since one end of the lower scroll spring 40 is fixed to the inner side of the circular hole and the other end is fixed to the top of the placement plate 31, when the positioning block 39 rotates, the lower scroll spring 40 will be gradually compressed. Then, when the locking block 42 is completely screwed out of the locking groove 43, the cleaning rack 32 can be taken out, and the cleaning rack 32 and the beaker 3 can be fixed together in the cleaning machine for cleaning. Finally, when installing the cleaning rack 32, repeat the above operation in reverse.

[0047] The basic principles, main features and advantages of the present invention are shown and described above.

[0048] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and the specification only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An experimental device for wax deposition test of waxy crude oil, comprising a warm magnetic stirrer (1), and a water bath (2) and a fixing frame (6) arranged on the warm magnetic stirrer (1), characterized in that: A beaker (3) is placed in the water bath (2); a rotatable support seat (4) is fixedly connected to the top of the warm magnetic stirrer (1); a gravity sensor (5) is bolted to the rotating end of the support seat (4); the fixed frame (6) is arranged above the warm magnetic stirrer (1); an F-shaped frame (7) is fixedly connected to the outer wall of the fixed frame (6); a rotating frame (8) is provided below the F-shaped frame (7); two clamping plates (9) are slidably connected to the inner side of the rotating frame (8); a semicircular arc ring (10) for clamping the beaker (3) is fixedly connected to the rear side of each clamping plate (9); an upper plate (11) for limiting the top position of the beaker (3) is provided at the top of the rotating frame (8); a placing table (45) is provided next to the warm magnetic stirrer (1); a moving mechanism for driving the F-shaped frame (7) to move horizontally is provided on the fixed frame (6); and a rotating frame (8) is provided for driving the clamping plates (9) to move toward the middle. The clamping mechanism comprises an upper electric telescopic cylinder (12), the upper electric telescopic cylinder (12) being fixedly connected to the bottom end of a rotating frame (8), a U-shaped plate (13) being slidably connected to the inside of the rotating frame (8), the ends of the U-shaped plate (13) being fixedly connected to inclined plates (14) inclined to both sides, a pair of slide grooves being provided at the bottom end of the rotating frame (8), a U-shaped connecting rod (15) being fixedly connected to the bottom end of the U-shaped plate (13) relative to the inner position of the slide groove, an output end of the upper electric telescopic cylinder (12) being fixedly connected to the side wall of the connecting rod (15), the clamping plate (9) being inclinedly arranged at a side away from the clamping plate (9), a groove being provided at a side close to the clamping plate (9), a plurality of return springs (16) being fixedly connected between the grooves, a circular groove being provided at the bottom end of the upper plate (11), a round rod (17) being fixedly connected to the inside of the circular groove, and the bottom end of the round rod (17) passing through and rotatably connected to the inside of the rotating frame (8).

2. The experimental device for wax deposition test of waxy crude oil according to claim 1, characterized in that: A pull rope (18) is wound around the outer wall of the round rod (17), one end of the pull rope (18) is fixedly connected to the outer wall of the round rod (17), a horizontal plate (19) is slidably connected to the inner side of the rotating frame (8), the other end of the pull rope (18) is fixedly connected to the side wall of the horizontal plate (19), a push plate (20) for pushing the horizontal plate (19) to move is fixedly connected to the side wall of the U-shaped plate (13), an upper scroll spring (21) is provided on the inner side of the circular groove, one end of the upper scroll spring (21) is fixedly connected to the inner side of the circular groove, and the other end of the upper scroll spring (21) is fixedly connected to the top of the rotating frame (8).

3. The experimental device for wax deposition test of waxy crude oil according to claim 1, characterized in that: A pair of limit blocks (22) for limiting the rotation angle of the upper plate (11) are fixedly connected to the top of the rotating frame (8); the upper plate (11) is arranged on a side away from the upper guide nozzle of the beaker (3), and the bottom end of the upper plate (11) is in contact with the top of the beaker (3).

4. The experimental device for wax deposition test of waxy crude oil according to claim 1, characterized in that: The moving mechanism comprises a driving motor (23), the driving motor (23) being fixedly connected to a side wall of a fixing frame (6), a through slot being provided at the top end of the fixing frame (6), a threaded rod (24) being rotatably connected to the inner side of the through slot, an output end of the driving motor (23) passing through the inner side of the through slot and being fixedly connected to the side wall of the threaded rod (24), a slider (25) being slidably connected to the inner side of the through slot, and the threaded rod (24) being threadedly connected to the inner side wall of the slider (25), the slider (25) being fixedly connected to the inner side of an F-shaped frame (7), a lower electric telescopic cylinder (26) being fixedly connected to the side wall of the F-shaped frame (7), an output end of the lower electric telescopic cylinder (26) being fixedly connected to a fixing frame (27), the rotating frame (8) being rotatably connected to the rear side of the fixing frame (27), a rotating motor (28) being fixedly connected to the inner side of the rotating frame (8), an output end of the rotating motor (28) passing through the rear side of the fixing frame (27) and being fixedly connected to the side wall of the rotating frame (8).

5. The experimental device for wax deposition test of waxy crude oil according to claim 4, characterized in that: A pair of inner grooves are provided on the front side of the fixing frame (6), and touch sensors (29) are fixedly connected inside the inner grooves. The touch sensors (29) are electrically connected to the lower electric telescopic cylinder (26) and the rotating motor (28) through a controller.

6. The experimental device for wax deposition test of waxy crude oil according to claim 1, characterized in that: A collecting box (30) for collecting crude oil is provided at one end of the top of the placement table (45), and a placement plate (31) for placing a beaker (3) is rotatably connected to the other end of the top of the placement table (45). A cleaning rack (32) for placing the beaker (3) is provided on the placement plate (31), and four placement grooves are equidistantly provided on the placement plate (31). Oil absorption pads (46) are provided inside the four placement grooves. A feeding motor (33) is fixedly connected to the bottom of the placement table (45), and an output end of the feeding motor (33) passes through the top of the placement table (45) and is fixedly connected to the bottom of the placement plate (31).

7. The experimental device for wax deposition test of waxy crude oil according to claim 6, characterized in that: The top of the cleaning rack (32) is provided with four openings at equal intervals. A semicircular arc plate (34) is fixedly connected to the inner side of the cleaning rack (32) relative to the openings. Both ends of the four openings are fixedly connected to sliding frames (35). A sliding rack (36) is slidably connected between the sliding frames (35). A plurality of insertion rods (37) for fixing the beaker (3) are fixedly connected to the top of the sliding rack (36). A clamping spring (38) is fixedly connected between the inner side of the sliding frame (35) and the side wall of the sliding rack (36).

8. The experimental device for wax deposition test of waxy crude oil according to claim 6, characterized in that: A positioning block (39) is rotatably connected to the top of the placement plate (31), a circular hole is formed at the bottom of the positioning block (39), a lower scroll spring (40) is provided inside the circular hole, one end of the lower scroll spring (40) is fixedly connected to the inside of the circular hole, and the other end of the lower scroll spring (40) is fixedly connected to the top of the placement plate (31), a circular hole is formed through the side wall of the positioning block (39), both sides of the circular hole are slidably connected to extrusion rods (41), and the side of the extrusion rod (41) away from the circular hole is fixedly connected to an arc-shaped locking block (42), a locking groove (43) adapted to the locking block (42) is formed inside the cleaning rack (32), and a locking spring (44) is fixedly connected between the extrusion rods (41).

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