Petroleum sampling device and sampling method thereof

Abstract

The invention relates to the field of petroleum sampling, in particular to a petroleum sampling device and a sampling method.The petroleum sampling device comprises a supporting disc, five telescopic sampling pipes are fixedly connected to the bottom of the supporting disc at equal intervals along the circumference, and five rectangular grooves are formed in the surface of the supporting disc at equal intervals along the circumference; the five rectangular grooves are in one-to-one correspondence with the five telescopic sampling pipes, telescopic mechanisms are movably connected between the surfaces of the telescopic sampling pipes and the inner walls of the rectangular grooves, an adjusting groove is formed in the middle of the top of the supporting disc, and an adjusting gear ring is rotationally connected into the adjusting groove. The petroleum sampling device consists of a telescopic mechanism and an adjusting mechanism, by rotating an adjusting gear ring on the adjusting mechanism, five pressing racks synchronously move to abut against the positions of corresponding adjusting screw rods on the telescopic mechanism, at the moment, five different telescopic sampling pipes on the telescopic mechanism synchronously stretch out, petroleum at different depth positions in the oil tank can be conveniently sampled at the same time, and the use convenience is improved.

Description

Technical Field

[0001] The invention relates to the field of petroleum sampling, in particular to a petroleum sampling device and a sampling method thereof. Background Art

[0002] During the oil storage process, impurities will be deposited and suspended in the oil tank, resulting in inconsistent oil quality at different liquid levels. In order to determine the quality of oil at different liquid levels, it is necessary to sample the oil in the storage tank in layers, and sampling is generally performed using a sampling device.

[0003] The existing patent (publication number: CN115452483B) discloses a sampling device and sampling method for oil detection, including a connection assembly, wherein the connection assembly includes a sealing cover, and the bottom of the sealing cover is provided with a threaded connection port. In the process of implementing the solution, the inventor found that the following problems in the prior art have not been well solved: 1. During the use of the sampling device, it is necessary to sample the sampling tube separately, and it is usually necessary to sample the oil at multiple different depths inside the oil tank, and this sampling method is not convenient; 2. After the sampler is inserted into the oil tank, it will cause disturbance to the oil in the local position of the oil tank. At this time, part of the oil in the upper position of the oil tank will enter the lower position of the oil tank with the sampler. When the sampling head directly samples, it is easy to draw the disturbed oil around the sampler into the sampler, affecting the sampling quality. Summary of the invention

[0004] The purpose of the present invention is to provide a petroleum sampling device and a sampling method thereof, so as to solve the problems raised in the above-mentioned background technology: 1. It is difficult to perform sampling operations at the same time during the use of some existing petroleum samplers, and the convenience of use is poor; 2. It is difficult to perform sampling operations at positions with small disturbances inside the oil tank during the use of some existing petroleum samplers. In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oil sampling device, comprising a support plate, the bottom of the support plate is fixedly connected with five telescopic sampling tubes at equal intervals along the circumference, the surface of the support plate is provided with five rectangular grooves at equal intervals along the circumference, the five rectangular grooves correspond to the five telescopic sampling tubes one by one, and a telescopic mechanism is movably connected between the surface of the telescopic sampling tube and the inner wall of the rectangular groove; An adjustment groove is provided in the middle of the top of the support plate, an adjustment tooth ring is rotatably connected inside the adjustment groove, and an adjustment mechanism matched with the telescopic mechanism is movably connected between the surface of the adjustment tooth ring and the surface of the support plate; The inner bottom surface of the adjustment groove is symmetrically provided with a waist-shaped groove matched with the adjustment tooth ring, and an L-shaped support rod is slidably connected inside the waist-shaped groove, and the tops of the two L-shaped support rods are fixedly connected to the bottom of the adjustment tooth ring, and an adjustment cylinder is fixedly connected between the bottoms of the two L-shaped support rods, and the top of the adjustment cylinder is rotatably connected to the bottom of the support plate, and the side wall of the adjustment cylinder is provided with a trapezoidal inclined groove matched with the telescopic mechanism, and the trapezoidal inclined grooves are set to five, and the five trapezoidal inclined grooves are equidistantly arranged on the outer ring of the adjustment cylinder along the circumference; The telescopic mechanism comprises an upper pad, which is fixedly connected to the side wall of the telescopic sampling tube, and a main slideway matching the rectangular groove is provided on the surface of the upper pad, and a hinge block is slidably connected inside the main slideway; The bottom of the telescopic sampling tube is fixedly connected with an L-shaped sleeve, the side wall of the L-shaped sleeve is fixedly connected with a lower pad, the side wall of the lower pad is provided with a slave slide, the interior of the slave slide is slidably connected with a connecting block, a diamond-shaped telescopic frame is movably connected between the side wall of the connecting block and the lower part of the hinge block, the upper part of the diamond-shaped telescopic frame away from the hinge block is movably connected to the inside of the main slide, and the lower part of the diamond-shaped telescopic frame away from the hinge block is movably connected to the surface of the lower pad; An extension tube is movably inserted into one end of the L-shaped sleeve, and a pressing rod is fixedly connected to one end of the extension tube close to the inner wall of the L-shaped sleeve. One end of the pressing rod passes through the L-shaped sleeve and overlaps the inner wall of the trapezoidal inclined groove. A return spring is movably connected between the middle part of the pressing rod and the side wall of the L-shaped sleeve; The top of the hinge block is fixedly connected with a vertical rod, the upper part of the vertical rod is slidably connected to the inside of the corresponding rectangular groove, the top of the vertical rod is fixedly connected with an L-shaped bracket, one end of the L-shaped bracket is fixedly connected with a screw sleeve, and the internal thread of the screw sleeve is connected with an adjusting screw that cooperates with the adjusting mechanism.

[0005] Preferably, a hinge rod is fixedly connected to a side of the main slide away from the hinge block, and an upper portion of the rhombus telescopic frame away from the hinge block is hingedly mounted to the hinge rod; A sliding rod is fixedly connected between the two sides of the inner wall of the sliding groove, the connecting block is slidably connected to the surface of the sliding rod, the lower part of the diamond-shaped telescopic frame is hinged to the surface of the connecting block on one side close to the adjusting cylinder, and the surface of the sliding rod is movably sleeved with a return spring that matches the connecting block; The surface of the lower pad is fixedly connected with a connecting shaft at a side away from the slide groove, and the lower part of the diamond-shaped telescopic frame at a side away from the connecting block is hingedly installed with the connecting shaft.

[0006] Preferably, a sealing gasket is fixedly connected to a side of the lower part of the L-shaped sleeve away from the extension tube, and the pressing rod is movably inserted into the interior of the sealing gasket; A return washer is fixedly sleeved on the middle part of the pressing rod, and the return spring is arranged between the return washer and the side wall of the L-shaped sleeve.

[0007] Preferably, a U-shaped bracket is movably sleeved on the outer wall of the screw sleeve, and the U-shaped bracket is fixedly connected to the top of the support plate. The surface of the support plate is provided with scale lines matching the adjusting screw.

[0008] Preferably, a sampling extractor quick connector is fixedly connected to the top of the telescopic sampling tube.

[0009] Preferably, the adjustment mechanism comprises an adjustment gear rod, the adjustment gear rod is rotatably connected to the inner bottom surface of the adjustment groove, the side wall of the adjustment gear rod is meshed with the inner ring of the adjustment gear ring, the number of the adjustment gear rods is five, the five adjustment gear rods are equidistantly arranged along the inner ring of the adjustment gear ring, and the five adjustment gear rods correspond one to one with the five telescopic sampling tubes; The inner bottom surface of the adjustment groove is provided with five movable grooves equidistantly along the circumference, and the five movable grooves correspond to the five adjustment gear rods one by one. A pressing gear rack matched with the telescopic mechanism is slidably connected inside the movable groove, and the side wall of the pressing gear rack is meshed with the side wall of the corresponding adjustment gear rod; The outer ring of the adjusting tooth ring is symmetrically fixedly connected with a spring telescopic rod, the movable end of the spring telescopic rod is fixedly connected with a pressing block, the side wall of the pressing block is fixedly connected with a limiting pin, and the inner wall of the adjusting groove is symmetrically provided with limiting holes, and the two limiting holes correspond one to one with the two limiting pins.

[0010] Preferably, a support frame is slidably connected to the surface of the pressing rack, and the bottom of the support frame is fixedly connected to the inner bottom surface of the adjusting groove; A moving pin is fixedly connected to the bottom of the pressing rack, and the pressing rack is slidably connected to the inside of the corresponding moving groove through the moving pin. A restoring spring is movably sleeved on the surface of the pressing rack, and the restoring spring is arranged between the support frame and the moving pin.

[0011] A method for using a petroleum sampling device comprises the following steps: S1. When in use, first install the support plate at the tank mouth of the oil tank, then rotate the adjusting screw on the surface of the screw sleeve to adjust the position between the end of the adjusting screw and the end of the pressing rack. The closer the adjusting screw is to the pressing rack, the longer the period of the pressing adjusting screw during the translation of the pressing rack is, and the longer the distance that the telescopic sampling tube is extended under the cooperation of the telescopic mechanism. S2. When the positions of the five adjusting screws are adjusted, the adjusting tooth ring is turned to rotate counterclockwise inside the adjusting groove. During this process, the adjusting tooth ring rotates with the five adjusting tooth rods synchronously, so that the adjusting tooth rods mesh with the corresponding side walls of the pressing racks, and the pressing racks are pressed against the end position of the adjusted adjusting screw, so that the adjusting screw, the corresponding screw sleeve, the L-shaped bracket and the vertical rod slide inside the rectangular groove on the surface of the support plate. At this time, the vertical rod slides inside the main slide groove with the lower hinge block, so that the lower part of the diamond-shaped telescopic frame extends out, and extends downward with the L-shaped sleeve and the telescopic sampling tube through the lower pad at the bottom of the diamond-shaped telescopic frame. Since the five pressing racks on the top of the support plate move synchronously, the five adjusting screws are pressed to different degrees. At this time, the telescopic sampling tube moves down with the corresponding L-shaped sleeve to different depths inside the oil tank for sampling; S3. During the counterclockwise rotation of the adjusting tooth ring, the bottom of the adjusting tooth ring rotates synchronously with the L-shaped support rod inside the waist-shaped groove, so that the two L-shaped support rods rotate synchronously with the adjusting cylinder at the bottom of the support plate. When the adjusting cylinder is about to rotate to the extreme position with the adjusting tooth ring, the trapezoidal inclined groove on the side wall of the adjusting cylinder cooperates with the end of the pressing rod at the lower position of the L-shaped casing to slide, so that the pressing rod moves along the inclined trajectory of the trapezoidal inclined groove. At this time, the pressing rod moves toward the inside of the L-shaped casing and presses the extension tube to extend from the end position of the L-shaped casing to sample the oil in the undisturbed position. Finally, the sampling operation can be carried out by connecting the sampler to the quick connector at the top of the telescopic sampling tube.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by using the telescopic sampling tube, the telescopic mechanism and the adjusting mechanism in coordination, by rotating the adjusting tooth ring on the adjusting mechanism, the five pressing racks are synchronously moved to press against the corresponding adjusting screw positions on the telescopic mechanism. At this time, the five different telescopic sampling tubes on the telescopic mechanism are synchronously extended, which is convenient for sampling the oil at different depths inside the oil tank at the same time, thereby improving the convenience of use.

[0013] In the present invention, by using the coordinated use of components such as the adjusting screw, the threaded sleeve and the pressing rack, the adjusting screw is rotated to adjust the distance between the end of the adjusting screw and the corresponding end of the pressing rack, and the period of translation of the adjusting screw during the translation of the pressing rack is controlled, thereby being able to control the extension length of the corresponding telescopic sampling tube, thereby achieving free adjustment of the extension distance of the telescopic sampling tube, and facilitating free adjustment of the sampling depth according to demand.

[0014] In the present invention, through the coordinated use of the telescopic mechanism, the telescopic sampling tube and the adjusting tube, when the adjusting gear ring rotates, the adjusting tube is synchronously rotated by the L-shaped support rod, so that the trapezoidal inclined groove on the surface of the adjusting tube cooperates with the pressing rod at the bottom of the telescopic sampling tube to slide, and the extension tube inside the L-shaped sleeve is extended by the pressing rod, and the extended extension tube is used to extract the oil position with less disturbance, thereby improving the quality of oil sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A side view of the structure of the present invention; Figure 2 A top view of the support plate position of the present invention; Figure 3 A side view of the position of the upper pad and the lower pad of the present invention; Figure 4 It is a side view of the lower pad and the local position of the slave chute of the present invention; Figure 5 It is a cross-sectional view of a local position of the L-shaped sleeve and the extension tube of the present invention; Figure 6 For the present invention Figure 5 A magnified view of the structure at center A; Figure 7 It is a side cross-sectional view of a local position of the support plate and the rectangular groove of the present invention; Figure 8 For the present invention Figure 7 A magnified view of the structure at B in the middle; Fig. 9 It is a side cross-sectional view of a local position of the pressing rod and the trapezoidal inclined groove of the present invention; Fig.10 For the present invention Fig. 9 A magnified view of the structure at C in the middle; Fig.11 It is a cross-sectional view of the waist-shaped groove and the local position of the L-shaped support rod of the present invention.

[0016] In the figure: 1. support plate; 2. telescopic sampling tube; 3. rectangular groove; 4. telescopic mechanism; 401. upper pad; 402. main slide; 403. hinge block; 404. L-shaped sleeve; 405. lower pad; 406. slave slide; 407. connecting block; 408. diamond telescopic frame; 409. extension tube; 410. pressing rod; 411. return spring; 412. vertical rod; 413. L-shaped bracket; 414. screw sleeve; 415. adjusting screw; 5. adjusting groove; 6. adjusting gear ring; 7. adjusting mechanism; 701. adjusting gear rod; 702. moving groove; 703. pressing rack; 704. spring telescopic rod; 705. pressing block; 706. limit pin; 707. limit hole; 8. waist groove; 9. L-shaped support rod; 10. adjusting cylinder; 11. trapezoidal inclined groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1 to 11 The present invention provides a technical solution: a petroleum sampling device, comprising a support plate 1, the bottom of the support plate 1 is fixedly connected with five telescopic sampling tubes 2 at equal intervals along the circumference, the surface of the support plate 1 is provided with five rectangular grooves 3 at equal intervals along the circumference, the five rectangular grooves 3 correspond to the five telescopic sampling tubes 2 one by one, and a telescopic mechanism 4 is movably connected between the surface of the telescopic sampling tube 2 and the inner wall of the rectangular groove 3.

[0019] An adjustment groove 5 is opened in the middle position of the top of the support plate 1, and an adjustment gear ring 6 is rotatably connected inside the adjustment groove 5. An adjustment mechanism 7 that cooperates with the telescopic mechanism 4 is movably connected between the surface of the adjustment gear ring 6 and the surface of the support plate 1; a support bearing is fixedly connected between the outer ring of the adjustment gear ring 6 and the inner bottom surface of the adjustment groove 5 to ensure that the adjustment gear ring 6 rotates stably inside the adjustment groove 5.

[0020] The inner bottom surface of the adjusting groove 5 is symmetrically provided with a waist-shaped groove 8 that matches the adjusting tooth ring 6. An L-shaped support rod 9 is slidably connected inside the waist-shaped groove 8. The tops of the two L-shaped support rods 9 are fixedly connected to the bottom of the adjusting tooth ring 6. An adjusting cylinder 10 is fixedly connected between the bottoms of the two L-shaped support rods 9. The top of the adjusting cylinder 10 is rotatably connected to the bottom of the support plate 1. The side wall of the adjusting cylinder 10 is provided with a trapezoidal inclined groove 11 that matches the telescopic mechanism 4. There are five trapezoidal inclined grooves 11, and five trapezoidal inclined grooves 11 are equidistantly arranged on the outer circle of the adjusting cylinder 10 along the circumference; when the support plate 1 is installed at the tank mouth position on the top of the oil tank, the bottom of the adjusting cylinder 10 overlaps the inner bottom surface position of the oil tank to ensure that the telescopic mechanism 4 can always be used in conjunction with the trapezoidal inclined groove 11 on the side wall of the adjusting cylinder 10 after moving down inside the oil tank. The cross section of the trapezoidal inclined groove 11 is trapezoidal.

[0021] The telescopic mechanism 4 includes an upper pad 401, which is fixedly connected to the side wall of the telescopic sampling tube 2. A main slide groove 402 matching the rectangular groove 3 is provided on the surface of the upper pad 401, and a hinge block 403 is slidably connected inside the main slide groove 402; translation grooves are provided on both sides of the inner wall of the main slide groove 402, and translation pins are fixedly connected on both sides of the hinge block 403, and the hinge block 403 is slidably connected between the two translation grooves through the translation pins.

[0022] The bottom of the telescopic sampling tube 2 is fixedly connected with an L-shaped sleeve 404, the side wall of the L-shaped sleeve 404 is fixedly connected with a lower pad 405, the side wall of the lower pad 405 is provided with a slave slide 406, the interior of the slave slide 406 is slidably connected with a connecting block 407, a diamond-shaped telescopic frame 408 is movably connected between the side wall of the connecting block 407 and the lower part of the hinge block 403, the upper part of the diamond-shaped telescopic frame 408 away from the hinge block 403 is movably connected to the inside of the main slide 402, and the lower part of the diamond-shaped telescopic frame 408 away from the hinge block 403 is movably connected to the surface of the lower pad 405.

[0023] An extension tube 409 is movably inserted into one end of the L-shaped sleeve 404, and a pressing rod 410 is fixedly connected to one end of the extension tube 409 close to the inner wall of the L-shaped sleeve 404. One end of the pressing rod 410 passes through the L-shaped sleeve 404 and overlaps the inner wall of the trapezoidal inclined groove 11. A return spring 411 is movably connected between the middle part of the pressing rod 410 and the side wall of the L-shaped sleeve 404. The five trapezoidal inclined grooves 11 on the adjusting cylinder 10 correspond to the five pressing rods 410 one by one. When the adjusting cylinder 10 is just opened, When the adjusting tube 10 starts to rotate, the pressing rod 410 slides along the arc position of the trapezoidal inclined groove 11. At this time, the pressing rod 410 will not move. When the adjusting tube 10 is about to rotate to the limit state, the pressing rod 410 cooperates to slide to the inclined position of the trapezoidal inclined groove 11. At this time, the pressing rod 410 is pressed to move toward the inside of the L-shaped sleeve 404; a through hole is opened at one end of the extension tube 409 located inside the L-shaped sleeve 404, so that the oil can be sucked into the inside of the L-shaped sleeve 404 from the end of the extension tube 409.

[0024] The top of the hinge block 403 is fixedly connected with a vertical rod 412, the upper part of the vertical rod 412 is slidably connected to the inside of the corresponding rectangular groove 3, the top of the vertical rod 412 is fixedly connected with an L-shaped bracket 413, one end of the L-shaped bracket 413 is fixedly connected with a screw sleeve 414, and the internal thread of the screw sleeve 414 is connected with an adjustment screw 415 that cooperates with the adjustment mechanism 7. The end of the adjustment screw 415 away from the screw sleeve 414 is set to a ball head shape, and the ball head shape is set to facilitate the rotation of the adjustment screw 415 to adjust the position.

[0025] In this embodiment, Figures 1 to 11 As shown, a hinge rod is fixedly connected to a side of the main slide 402 away from the hinge block 403 , and an upper portion of a side of the diamond-shaped telescopic frame 408 away from the hinge block 403 is hingedly mounted to the hinge rod.

[0026] A sliding rod is fixedly connected between the two sides of the inner wall of the slide groove 406, and a connecting block 407 is slidably connected to the surface of the sliding rod. The lower part of the diamond-shaped telescopic frame 408 is hinged to the surface of the connecting block 407 near the adjusting cylinder 10, and the surface of the sliding rod is movably sleeved with a return spring that cooperates with the connecting block 407.

[0027] A connecting shaft is fixedly connected to the side of the lower pad 405 away from the slave chute 406, and the lower part of the diamond-shaped telescopic frame 408 away from the connecting block 407 is hingedly installed with the connecting shaft. The side of the diamond-shaped telescopic frame 408 close to the hinge block 403 and the connecting block 407 can slide inside the corresponding main chute 402 and the slave chute 406. When the hinge block 403 slides inside the main chute 402, the diamond-shaped telescopic frame 408 can move up and down with the L-shaped sleeve 404, so that the lower part of the telescopic sampling tube 2 can be telescopically adjusted.

[0028] In this embodiment, Figures 1 to 11 As shown, a sealing gasket is fixedly connected to the side of the lower part of the L-shaped sleeve 404 away from the extension tube 409, and the pressing rod 410 is movably inserted into the inside of the sealing gasket; the sealing gasket is set to ensure the sealing effect during the oil extraction process inside the L-shaped sleeve 404; and a one-way valve is installed at the port position of the extension tube 409 to improve the stability after the oil is extracted.

[0029] A return washer is fixedly sleeved in the middle of the pressing rod 410 , and a return spring 411 is arranged between the return washer and the side wall of the L-shaped sleeve 404 .

[0030] In this embodiment, Figures 1 to 11 As shown, the outer wall of the screw sleeve 414 is movably sleeved with a U-shaped bracket, which is fixedly connected to the top of the support plate 1. The surface of the support plate 1 is provided with scale lines that match the adjustment screw 415. The scale lines are set to facilitate the position of the adjustment screw 415.

[0031] In this embodiment, Figures 1 to 11 As shown, a sampling extractor quick connector is fixedly connected to the top of the telescopic sampling tube 2. The telescopic sampling tube 2 adopts the telescopic tube structure in the prior art, which will not be described in detail here, and is arranged by the sampling extractor quick connector. When the telescopic sampling tube 2 moves to a suitable position inside the oil tank, the sampler quickly connects to the top of the sampling telescopic tube and extracts the oil inside the oil tank.

[0032] In this embodiment, Figures 1 to 11 As shown, the adjustment mechanism 7 includes an adjustment gear rod 701, which is rotatably connected to the inner bottom surface of the adjustment groove 5, and the side wall of the adjustment gear rod 701 is engaged with the inner ring of the adjustment gear ring 6. The number of the adjustment gear rods 701 is five, and the five adjustment gear rods 701 are equidistantly arranged along the inner ring of the adjustment gear ring 6. The five adjustment gear rods 701 correspond one by one to the five telescopic sampling tubes 2.

[0033] The inner bottom surface of the adjusting groove 5 is provided with five movable grooves 702 at equal intervals along the circumference, and the five movable grooves 702 correspond to the five adjusting gear rods 701 one by one. The inside of the movable groove 702 is slidably connected with a pressing rack 703 that cooperates with the telescopic mechanism 4, and the side wall of the pressing rack 703 is meshed with the side wall of the corresponding adjusting gear rod 701; when the adjusting gear ring 6 rotates counterclockwise inside the adjusting groove 5, the adjusting gear rod 701 rotates synchronously with the adjusting gear ring 6, so that the upper part of the adjusting gear rod 701 During the process of meshing the side wall of the pressing rack 703 with the side wall of the pressing rack 703, the pressing rack 703 moves in the direction of the corresponding adjusting screw 415 and presses the adjusting screw 415; when the end of the adjusting screw 415 is closer to the corresponding pressing rack 703, the adjusting screw 415 is pressed for a longer period, so that the screw sleeve 414, the L-shaped bracket 413, the vertical rod 412 and the hinge block 403 move a longer distance in the main slide groove 402, thereby the telescopic sampling tube 2 extends downward a longer distance.

[0034] The outer ring of the adjusting toothed ring 6 is symmetrically fixedly connected with a spring telescopic rod 704, the movable end of the spring telescopic rod 704 is fixedly connected with a pressing block 705, the side wall of the pressing block 705 is fixedly connected with a limiting pin 706, and the inner wall of the adjusting groove 5 is symmetrically provided with limiting holes 707, and the two limiting holes 707 correspond to the two limiting pins 706. When the adjusting toothed ring 6 rotates counterclockwise with the pressing block 705, when the limiting pin 706 on the pressing block 705 rotates to the position of the limiting hole 707 on the inner wall of the adjusting groove 5, the spring telescopic rod 704 presses the limiting pin 706 on the pressing block 705 and inserts into the corresponding limiting hole 707, at which time the adjusting toothed ring 6 cannot continue to rotate, achieving self-locking.

[0035] In this embodiment, Figures 1 to 11 As shown, a support frame is slidably connected to the surface of the pressing rack 703 , and the bottom of the support frame is fixedly connected to the inner bottom surface of the adjusting groove 5 .

[0036] The bottom of the pressing rack 703 is fixedly connected with a moving pin, and the pressing rack 703 is slidably connected to the inside of the corresponding moving groove 702 through the moving pin. The surface of the pressing rack 703 is movably sleeved with a restoring spring, which is arranged between the support frame and the moving pin. By pressing the two pressing blocks 705, the stop pin 706 is released from the stop hole 707, and the restoring spring brings the pressing rack 703 to reset and move, so that the adjusting gear ring 6 can be reset and rotated.

[0037] In this embodiment, Figures 1 to 11 As shown, a method for using a petroleum sampling device comprises the following steps: S1. When in use, first install the support plate 1 at the tank mouth of the oil tank, then rotate the adjusting screw 415 on the surface of the screw sleeve 414 to adjust the position between the end of the adjusting screw 415 and the end of the pressing rack 703. When the adjusting screw 415 is closer to the pressing rack 703, the longer the period of pressing the adjusting screw 415 during the translation of the pressing rack 703 is, the longer the distance that the telescopic sampling tube 2 is extended is under the cooperation of the telescopic mechanism 4. S2. When the positions of the five adjusting screws 415 are adjusted, the adjusting toothed ring 6 is turned to rotate counterclockwise inside the adjusting groove 5. During this process, the adjusting toothed ring 6 rotates synchronously with the five adjusting toothed rods 701, so that the adjusting toothed rods 701 are meshed with the corresponding side walls of the pressing racks 703, and the pressing racks 703 are pressed against the end position of the adjusted adjusting screw 415, so that the adjusting screw 415, the corresponding screw sleeve 414, the L-shaped bracket 413 and the vertical rod 412 slide inside the rectangular groove 3 on the surface of the support plate 1. The vertical rod 412 slides with the lower hinge block 403 inside the main slide groove 402, so that the lower part of the diamond telescopic frame 408 extends out, and extends downward with the L-shaped sleeve 404 and the telescopic sampling tube 2 through the lower pad 405 at the lower part of the diamond telescopic frame 408. Since the five pressing racks 703 on the top of the support plate 1 move synchronously, the five adjusting screws 415 are pressed to different degrees. At this time, the telescopic sampling tube 2 moves downward with the corresponding L-shaped sleeve 404 to different depths inside the oil tank for sampling. S3. During the counterclockwise rotation of the adjusting tooth ring 6, the bottom of the adjusting tooth ring 6 rotates synchronously with the L-shaped support rod 9 inside the waist-shaped groove 8, so that the two L-shaped support rods 9 rotate synchronously with the adjusting cylinder 10 at the bottom of the support plate 1. When the adjusting cylinder 10 is about to rotate to the extreme position with the adjusting tooth ring 6, the trapezoidal inclined groove 11 on the side wall of the adjusting cylinder 10 cooperates with the end of the pressing rod 410 at the lower position of the L-shaped sleeve 404 to slide, so that the pressing rod 410 moves along the inclined trajectory of the trapezoidal inclined groove 11. At this time, the pressing rod 410 moves toward the inside of the L-shaped sleeve 404 and presses the extension tube 409 to extend from the end position of the L-shaped sleeve 404 to sample the oil at the position where no disturbance is caused. Finally, the sampling operation can be carried out by connecting the sampler to the quick connector at the top of the telescopic sampling tube 2.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A petroleum sampling device, comprising a support plate (1), characterized in that: The bottom of the support plate (1) is fixedly connected with five telescopic sampling tubes (2) at equal intervals along the circumference, the surface of the support plate (1) is provided with five rectangular grooves (3) at equal intervals along the circumference, the five rectangular grooves (3) correspond one to one with the five telescopic sampling tubes (2), and a telescopic mechanism (4) is movably connected between the surface of the telescopic sampling tube (2) and the inner wall of the rectangular groove (3); An adjusting groove (5) is provided in the middle of the top of the support plate (1), an adjusting toothed ring (6) is rotatably connected inside the adjusting groove (5), and an adjusting mechanism (7) cooperating with the telescopic mechanism (4) is movably connected between the surface of the adjusting toothed ring (6) and the surface of the support plate (1); The inner bottom surface of the adjustment groove (5) is symmetrically provided with a waist-shaped groove (8) matching with the adjustment tooth ring (6); an L-shaped support rod (9) is slidably connected inside the waist-shaped groove (8); the tops of the two L-shaped support rods (9) are fixedly connected to the bottom of the adjustment tooth ring (6); an adjustment cylinder (10) is fixedly connected between the bottoms of the two L-shaped support rods (9); the top of the adjustment cylinder (10) is rotatably connected to the bottom of the support plate (1); the side wall of the adjustment cylinder (10) is provided with a trapezoidal inclined groove (11) matching with the telescopic mechanism (4); the number of the trapezoidal inclined grooves (11) is set to five, and the five trapezoidal inclined grooves (11) are equidistantly provided on the outer ring of the adjustment cylinder (10) along the circumference; The telescopic mechanism (4) comprises an upper pad (401), the upper pad (401) being fixedly connected to the side wall of the telescopic sampling tube (2), a main slide groove (402) matching with the rectangular groove (3) being provided on the surface of the upper pad (401), and a hinge block (403) being slidably connected inside the main slide groove (402); The bottom of the telescopic sampling tube (2) is fixedly connected to an L-shaped sleeve (404), the side wall of the L-shaped sleeve (404) is fixedly connected to a lower pad (405), the side wall of the lower pad (405) is provided with a secondary slide groove (406), the interior of the secondary slide groove (406) is slidably connected to a connecting block (407), a rhombus-shaped telescopic frame (408) is movably connected between the side wall of the connecting block (407) and the lower part of the hinge block (403), the upper part of the rhombus-shaped telescopic frame (408) away from the hinge block (403) is movably connected to the inside of the main slide groove (402), and the lower part of the rhombus-shaped telescopic frame (408) away from the hinge block (403) is movably connected to the surface of the lower pad (405); An extension tube (409) is movably inserted into one end of the L-shaped sleeve (404); an end of the extension tube (409) close to the inner wall of the L-shaped sleeve (404) is fixedly connected to a pressing rod (410); one end of the pressing rod (410) penetrates the L-shaped sleeve (404) and overlaps the inner wall of the trapezoidal inclined groove (11); a return spring (411) is movably connected between the middle part of the pressing rod (410) and the side wall of the L-shaped sleeve (404); The top of the hinge block (403) is fixedly connected to a vertical rod (412), the upper part of the vertical rod (412) is slidably connected to the inside of the corresponding rectangular groove (3), the top of the vertical rod (412) is fixedly connected to an L-shaped bracket (413), one end of the L-shaped bracket (413) is fixedly connected to a screw sleeve (414), and the internal thread of the screw sleeve (414) is connected to an adjustment screw (415) that cooperates with the adjustment mechanism (7).

2. A petroleum sampling device according to claim 1, characterized in that: A hinge rod is fixedly connected to a side of the main slide groove (402) away from the hinge block (403), and an upper portion of a side of the diamond-shaped telescopic frame (408) away from the hinge block (403) is hingedly mounted to the hinge rod; A sliding rod is fixedly connected between the two sides of the inner wall of the sliding groove (406), the connecting block (407) is slidably connected to the surface of the sliding rod, the lower part of the diamond-shaped telescopic frame (408) is hinged to the surface of the connecting block (407) on one side close to the adjustment cylinder (10), and the surface of the sliding rod is movably sleeved with a return spring that matches the connecting block (407); A connecting shaft is fixedly connected to a side of the surface of the lower pad (405) away from the slide groove (406), and a lower part of a side of the diamond-shaped telescopic frame (408) away from the connecting block (407) is hingedly mounted to the connecting shaft.

3. A petroleum sampling device according to claim 2, characterized in that: A sealing gasket is fixedly connected to a side of the lower portion of the L-shaped sleeve (404) away from the extension tube (409), and the pressing rod (410) is movably inserted into the interior of the sealing gasket; A return washer is fixedly sleeved at the middle of the pressing rod (410), and the return spring (411) is arranged between the return washer and the side wall of the L-shaped sleeve (404).

4. A petroleum sampling device according to claim 3, characterized in that: A U-shaped bracket is movably sleeved on the outer wall of the screw sleeve (414), and the U-shaped bracket is fixedly connected to the top of the support plate (1). The surface of the support plate (1) is provided with scale lines that match the adjustment screw rod (415).

5. A petroleum sampling device according to claim 4, characterized in that: The top of the telescopic sampling tube (2) is fixedly connected to a sampling extractor quick connector.

6. A petroleum sampling device according to claim 5, characterized in that: The adjustment mechanism (7) comprises an adjustment gear rod (701), the adjustment gear rod (701) being rotatably connected to the inner bottom surface of the adjustment groove (5), the side wall of the adjustment gear rod (701) being meshed with the inner ring of the adjustment gear ring (6), the number of the adjustment gear rods (701) being set to five, the five adjustment gear rods (701) being equidistantly arranged along the inner ring of the adjustment gear ring (6), and the five adjustment gear rods (701) corresponding one to one to the five telescopic sampling tubes (2); The inner bottom surface of the adjustment groove (5) is provided with five movable grooves (702) equidistantly along the circumference, the five movable grooves (702) corresponding to the five adjustment gear rods (701) one by one, the interior of the movable groove (702) is slidably connected with a pressing gear rack (703) matched with the telescopic mechanism (4), and the side wall of the pressing gear rack (703) meshes with the side wall of the corresponding adjustment gear rod (701); The outer ring of the adjusting toothed ring (6) is symmetrically fixedly connected with a spring telescopic rod (704), the movable end of the spring telescopic rod (704) is fixedly connected with a pressing block (705), the side wall of the pressing block (705) is fixedly connected with a limiting pin (706), and the inner wall of the adjusting groove (5) is symmetrically provided with limiting holes (707), and the two limiting holes (707) correspond one to one with the two limiting pins (706).

7. A petroleum sampling device according to claim 6, characterized in that: The surface of the pressing rack (703) is slidably connected to a support frame, and the bottom of the support frame is fixedly connected to the inner bottom surface of the adjustment groove (5); A movable pin is fixedly connected to the bottom of the pressing rack (703), and the pressing rack (703) is slidably connected to the inside of the corresponding movable groove (702) through the movable pin. A restoring spring is movably sleeved on the surface of the pressing rack (703), and the restoring spring is arranged between the support frame and the movable pin.

8. The method for using the petroleum sampling device according to claim 7 comprises the following steps: S1. When in use, first install the support plate (1) at the tank mouth of the oil tank, then rotate the adjusting screw (415) on the surface of the screw sleeve (414) to adjust the position between the end of the adjusting screw (415) and the end of the pressing rack (703). When the adjusting screw (415) is closer to the pressing rack (703), the period of pressing the adjusting screw (415) during the translation process of the pressing rack (703) is longer, and under the cooperation of the telescopic mechanism (4), the telescopic sampling tube (2) is extended to a longer distance; S2. When the positions of the five adjusting screw rods (415) are adjusted, the adjusting toothed ring (6) is turned counterclockwise inside the adjusting groove (5). During this process, the adjusting toothed ring (6) rotates synchronously with the five adjusting toothed rods (701), so that the adjusting toothed rods (701) are meshed with the side walls of the corresponding pressing racks (703), and the pressing racks (703) are pressed against the end position of the adjusted adjusting screw rod (415), so that the adjusting screw rod (415) with the corresponding screw sleeve (414), the L-shaped bracket (413) and the vertical rod (412) are in the rectangular groove (3) on the surface of the support plate (1). The vertical rod (412) slides with the lower hinge block (403) inside the main slide groove (402), so that the lower part of the diamond-shaped telescopic frame (408) extends out, and through the lower pad (405) at the lower part of the diamond-shaped telescopic frame (408), the L-shaped sleeve (404) and the telescopic sampling tube (2) extend downward. Since the five pressing racks (703) at the top of the support plate (1) move synchronously, the five adjusting screws (415) are pressed to different degrees. At this time, the telescopic sampling tube (2) moves downward with the corresponding L-shaped sleeve (404) to different depths inside the oil tank for sampling; S3. During the counterclockwise rotation of the adjusting toothed ring (6), the bottom of the adjusting toothed ring (6) with the L-shaped support rod (9) rotates synchronously inside the waist-shaped groove (8), so that the two L-shaped support rods (9) rotate synchronously with the adjusting cylinder (10) at the bottom of the supporting plate (1). When the adjusting cylinder (10) is about to rotate to the limit position along with the adjusting toothed ring (6), the trapezoidal inclined groove (11) on the side wall of the adjusting cylinder (10) and the end of the pressing rod (410) at the lower position of the L-shaped sleeve (404) cooperate to slide, so that the pressing rod (410) moves along the inclined track of the trapezoidal inclined groove (11). At this time, the pressing rod (410) moves into the inside of the L-shaped sleeve (404) and presses the extension tube (409) to extend from the end position of the L-shaped sleeve (404), so as to sample the oil at the position where no disturbance is caused. Finally, the sampling operation can be carried out by connecting the sampler with the quick connector of the sampler at the top of the telescopic sampling tube (2).

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