Petroleum automatic condensation point and pour point tester

By using a motor-driven worm gear meshing with a worm wheel and a gear transmission system, the sample tube is automatically clamped and adjusted, solving the problems of sample tube displacement and angular error in existing technologies, and achieving higher precision in pour point and freezing point detection.

CN121540757APending Publication Date: 2026-02-17CHANGDE PROD QUALITY SUPERVISION & INSPECTION INST
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Patent Information

Application Number
CN202511947826.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-23
Publication Date
2026-02-17

AI Technical Summary

Technical Problem

Existing petroleum pour point testing equipment requires manual fixation of the sample tube, which leads to large errors in sample tube displacement and tilt angle adjustment, affecting the consistency of test data.

Method used

The system employs a motor-driven worm gear and gear transmission system to achieve automatic clamping and angle adjustment of the sample tube, ensuring stable sample tube posture and accurate tilt angle.

Benefits of technology

It improves the clamping stability of the sample tube and the accuracy of tilt angle adjustment, thereby enhancing the accuracy and consistency of pour point and freezing point detection data.

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Abstract

The invention relates to the technical field of petroleum testing devices, in particular to an automatic petroleum condensation point and pour point tester which comprises a tester body, two electric cabinets are fixedly mounted at the front end of the tester body, a switching power supply is fixedly mounted at one end of the tester body, and a printer is fixedly mounted at the front end of the tester body. A touch screen is fixedly mounted at the front end of the tester body, a low-temperature bath box is fixedly mounted in the tester body, a first mounting box is fixedly connected to the interior of the tester body, a clamping assembly is arranged in the first mounting box, and the clamping assembly comprises a first mounting seat, a second mounting seat, a first rotating column and a second mounting box. A first motor drives a worm to be meshed with a worm gear, a first rotating column and a first gear are driven to rotate, a rack sleeve is driven to linearly move, a second gear drives a two-way threaded rod to rotate, the two clamping arms draw close oppositely, stable clamping is formed, and it is ensured that the posture of a sample tube is stable in the testing process.
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Description

Technical Field

[0001] This invention relates to the field of petroleum testing equipment, and more particularly to an automatic petroleum pour point tester. Background Technology

[0002] Petroleum is an important energy source and chemical raw material composed of various hydrocarbons. It is widely used in fuel and chemical production. Its pour point and freezing point directly determine its fluidity at low temperatures, which is related to transportation and storage safety and usage effectiveness. Therefore, it needs to be accurately measured by professional equipment. The automatic petroleum pour point tester is the core equipment for this test, which can provide reliable data support for the classification and application of petroleum products.

[0003] Existing petroleum pour point and freezing point testing equipment requires manual fixation of the sample tube and manual adjustment of the tilt angle to complete the test. In actual use, manual clamping of this type of equipment can easily cause the sample tube to shift, and the tilt angle adjustment error is large, affecting the consistency of the test data. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic pour point and freezing point tester for petroleum.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic pour point and freezing point tester for petroleum, comprising a tester body, two electrical control boxes fixedly installed at the front end of the tester body, a switching power supply fixedly installed at one end of the tester body, a printer fixedly installed at the front end of the tester body, a touch screen fixedly installed at the front end of the tester body, a low-temperature bath fixedly installed inside the tester body, and an installation box 1 fixedly connected inside the tester body, with a clamping component provided inside the installation box 1;

[0006] The clamping assembly includes a mounting base one, a mounting base two, a rotating column one, and a mounting box two. The mounting base one is fixedly connected inside the mounting box one, the mounting base two is fixedly connected inside the mounting box one, the rotating column one is rotatably connected inside the mounting box one, and the mounting box two is rotatably connected to one end of the mounting box one. A worm gear is rotatably connected inside the mounting base two, and a worm wheel is fixedly connected to the outer circumference of the rotating column one. The worm gear and the worm wheel mesh with each other. A gear one is fixedly connected to the outer circumference of the rotating column one, and a rotating column two is rotatably connected inside the mounting base one. A rack sleeve is slidably connected to the outer circumference of the rotating column two. The gear one and the rack sleeve mesh with each other. A bidirectional threaded rod is rotatably connected inside the mounting box two, and a gear two is fixedly connected to the outer circumference of the bidirectional threaded rod. The rack sleeve and the gear two mesh with each other. Two clamping arms are threadedly connected to the outer circumference of the gear two.

[0007] further:

[0008] The rotating assembly includes gear three and gear four. Gear three is fixedly connected to one end of the rotating column two, and gear four is rotatably connected inside the mounting box one. The end of the rotating column two away from gear three is fixedly connected to the inner wall of the mounting box two, and a driving assembly two is provided at one end of gear four.

[0009] further:

[0010] The drive assembly includes a motor, which is fixedly installed inside the mounting box, and the output end of the mounting box is fixedly connected to one end of the worm gear.

[0011] further:

[0012] The second drive component includes a second motor, which is fixedly installed at one end of the first mounting box, and the output end of the second motor is fixedly connected to one end of the fourth gear.

[0013] further:

[0014] The second mounting box has a guide groove inside, and the outer periphery of the two clamping arms is slidably connected to the inner wall of the guide groove.

[0015] further:

[0016] The two clamping arms are fixedly connected to anti-slip pads on opposite sides, and the anti-slip pads are made of anti-slip rubber.

[0017] The present invention has the following beneficial effects:

[0018] 1. Compared with the existing technology, this device drives the worm gear to mesh with the worm wheel through the motor, which drives the rotating column and gear to rotate, which drives the rack sleeve to move linearly, so that gear two drives the bidirectional threaded rod to rotate. The two clamping arms move towards each other to form a stable clamping, ensuring that the clamping force is uniform and controllable, ensuring the stability of the sample tube posture during the test, and improving the accuracy of the pour point and freezing point detection data.

[0019] 2. Compared with the existing technology, this device drives the rotating column and the mounting box to rotate through the second motor driving the third gear meshing with the fourth gear, thereby flexibly adjusting the tilt angle of the sample tube. The data is more accurate than manual operation, ensuring the reliability and consistency of the test results. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a schematic diagram of the clamping arm of the present invention;

[0022] Figure 3 This is a schematic diagram of the worm gear structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of gear three of the present invention.

[0024] Legend:

[0025] 1. Tester body; 2. Electrical control box; 3. Switching power supply; 4. Printer; 5. Touch screen; 6. Low temperature bath; 7. Mounting box one; 8. Mounting base one; 9. Mounting base two; 10. Rotating column one; 11. Mounting box two; 12. Worm gear; 13. Worm wheel; 14. Gear one; 15. Rotating column two; 16. Rack sleeve; 17. Bidirectional threaded rod; 18. Gear two; 19. Clamping arm; 20. Gear three; 21. Gear four; 22. Motor one; 23. Motor two; 24. Guide groove; 25. Anti-slip pad. Detailed Implementation

[0026] Reference Figure 1 - Figure 4 This invention relates to an automatic pour point and freezing point tester for petroleum, comprising a tester body 1, two electrical control boxes 2 fixedly installed at the front end of the tester body 1, a switching power supply 3 fixedly installed at one end of the tester body 1, a printer 4 fixedly installed at the front end of the tester body 1, a touch screen 5 fixedly installed at the front end of the tester body 1, a low-temperature bath 6 fixedly installed inside the tester body 1, an installation box 7 fixedly connected inside the tester body 1, a clamping assembly inside the installation box 7, a rotating assembly at one end of a rotating column 15, and a drive assembly at one end of a worm gear 12.

[0027] Specifically, the main body 1 of the tester provides the installation and support foundation for the entire device, two electrical control boxes 2 are used to test the samples, the switching power supply 3 controls the machine's on / off switch, the printer 4 can directly print test data reports, the touch screen 5 allows operators to set parameters and view test status, the low temperature bath 6 simulates a low temperature environment to meet the requirements of pour point and freezing point testing, and the mounting box 7 provides installation space for internal parts.

[0028] Reference Figure 1 - Figure 3The clamping assembly includes mounting base 8, mounting base 9, rotating column 10, and mounting box 11. Mounting base 8 is fixedly connected inside mounting box 7, mounting base 9 is fixedly connected inside mounting box 7, rotating column 10 is rotatably connected inside mounting box 7, and mounting box 11 is rotatably connected to one end of mounting box 7. A worm gear 12 is rotatably connected inside mounting base 9, and a worm wheel 13 is fixedly connected to the outer periphery of rotating column 10. The worm gear 12 and worm wheel 13 mesh with each other. A gear 14 is fixedly connected to the outer periphery of rotating column 10. A rotating column 15 is rotatably connected inside mounting base 8, and a rack sleeve 16 is slidably connected to the outer periphery of rotating column 15. 4 and rack sleeve 16 mesh with each other. A double-threaded rod 17 is rotatably connected inside the second mounting box 11. A gear 18 is fixedly connected to the outer periphery of the double-threaded rod 17. The rack sleeve 16 and gear 18 mesh with each other. Two clamping arms 19 are threadedly connected to the outer periphery of the double-threaded rod 17. The first drive component includes a motor 22. The motor 22 is fixedly installed inside the first mounting box 7. The output end of the motor 22 is fixedly connected to one end of the worm gear 12. A guide groove 24 is opened inside the second mounting box 11. The outer periphery of the two clamping arms 19 is slidably connected to the inner wall of the guide groove 24. An anti-slip pad 25 is fixedly connected to one side of the two clamping arms 19 facing each other. The anti-slip pad 25 is made of anti-slip rubber.

[0029] Specifically, mounting base 1 8 and mounting base 2 9 are symmetrically fixed inside mounting box 1 7, providing stable support for rotating column 2 15 and worm gear 12 respectively. Rotating column 1 10 transmits power through worm gear 13 meshing with worm gear 12. Gear 1 14 rotates with rotating column 1 10, driving rack sleeve 16 to move linearly along rotating column 2 15. Rack sleeve 16 rotates in conjunction with gear 2 18, causing bidirectional threaded rod 17 to rotate synchronously. Two clamping arms 19 move towards each other along guide groove 24. Anti-slip pad 25 is tightly attached to the outer wall of sample tube to increase friction and prevent slippage. Motor 1 22 provides rotational power to worm gear 12. Guide groove 24 restricts the movement trajectory of clamping arms 19 to ensure that the test tube is centered and does not deviate during clamping.

[0030] Reference Figure 1 , Figure 3 and Figure 4 The rotating assembly includes gear 3 20 and gear 4 21. Gear 3 20 is fixedly connected to one end of rotating column 2 15, and gear 4 21 is rotatably connected inside mounting box 1 7. The end of rotating column 2 15 away from gear 3 20 is fixedly connected to the inner wall of mounting box 2 11. One end of gear 4 21 is provided with drive assembly 2, which includes motor 2 23. Motor 2 23 is fixedly installed at one end of mounting box 1 7, and the output end of motor 2 23 is fixedly connected to one end of gear 4 21.

[0031] Specifically, gear 3 20 rotates synchronously with rotating column 2 15, and transmits rotational power through meshing with gear 4 21. One end of rotating column 2 15 is connected to mounting box 2 11, which drives the entire mounting box 2 11 and the test tubes clamped inside to adjust the tilt angle. Motor 2 23 provides stable driving force to gear 4 21, so that the angle adjustment is precise and controllable, meeting the detection requirements of different tilt states in pour point and freezing point tests.

[0032] Working principle: When it is necessary to clamp the sample tube for testing, start motor 22. The output end of motor 22 drives worm gear 12 to rotate. Worm gear 12 meshes with worm wheel 13 on the outer periphery of rotating column 10, driving rotating column 10 to rotate synchronously. Gear 14 on rotating column 10 rotates with it and moves linearly in conjunction with rack sleeve 16. Rack sleeve 16 meshes with gear 18 in mounting box 11, driving bidirectional threaded rod 17 to rotate synchronously. This causes the two clamping arms 19 on the outer periphery to move closer to each other along guide groove 24. Anti-slip pads 25 on clamping arms 19 are tightly attached to the outer wall of sample tube, forming a stable clamp.

[0033] When it is necessary to adjust the tilt angle of the sample tube, start motor 23. The output end of motor 23 drives gear 4 21 to rotate. Gear 4 21 meshes with gear 3 20 at one end of rotating column 2 15, driving rotating column 2 15 to rotate synchronously. The end of rotating column 2 15 away from gear 3 20 drives mounting box 2 11 to rotate, thereby flexibly adjusting the tilt angle of the sample tube.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Petroleum automatic condensation point pour point tester, comprising tester body (1), characterized in that: The tester body (1) is fixedly installed with two electric control boxes (2) at the front end, fixedly installed with a switching power supply (3) at one end, fixedly installed with a printer (4) at the front end, fixedly installed with a touch screen (5) at the front end, fixedly installed with a low-temperature bath box (6) inside, fixedly connected with a mounting box one (7) inside, and provided with a clamping assembly inside; The clamping assembly comprises a mounting seat one (8), a mounting seat two (9), a rotating column one (10) and a mounting box two (11), the mounting seat one (8) is fixedly connected inside the mounting box one (7), the mounting seat two (9) is fixedly connected inside the mounting box one (7), the rotating column one (10) is rotatably connected inside the mounting box one (7), the mounting box two (11) is rotatably connected at one end of the mounting box one (7), the mounting seat two (9) is rotatably connected with a worm (12) inside, the rotating column one (10) is fixedly connected with a worm wheel (13) outside, the worm (12) and the worm wheel (13) are engaged with each other, the rotating column one (10) is fixedly connected with a gear one (14) outside, the mounting seat one (8) is rotatably connected with a rotating column two (15) inside, the rotating column two (15) is slidably connected with a rack sleeve (16) outside, the gear one (14) and the rack sleeve (16) are engaged with each other, the mounting box two (11) is rotatably connected with a bidirectional threaded rod (17) inside, the bidirectional threaded rod (17) is fixedly connected with a gear two (18) outside, the rack sleeve (16) and the gear two (18) are engaged with each other, the gear two (18) is threadedly connected with two clamping arms (19) outside; The rotating column two (15) is provided with a rotating assembly at one end, and the worm (12) is provided with a driving assembly one at one end.

2. The petroleum automatic condensation point pour point tester according to claim 1, characterized in that: The rotating assembly comprises a gear three (20) and a gear four (21), the gear three (20) is fixedly connected at one end of the rotating column two (15), the gear four (21) is rotatably connected inside the mounting box one (7), the rotating column two (15) is fixedly connected to the inner wall of the mounting box two (11) away from one end of the gear three (20), and the gear four (21) is provided with a driving assembly two at one end.

3. The petroleum automatic condensation point pour point tester according to claim 2, characterized in that: The driving assembly one comprises a motor one (22), the motor one (22) is fixedly installed inside the mounting box one (7), and the output end of the mounting box one (7) is fixedly connected to one end of the worm (12).

4. The petroleum automatic condensation point pour point tester according to claim 3, characterized in that: The driving assembly two comprises a motor two (23), the motor two (23) is fixedly installed at one end of the mounting box one (7), and the output end of the motor two (23) is fixedly connected to one end of the gear four (21).

5. The petroleum automatic condensation point pour point tester according to claim 4, characterized in that: The mounting box two (11) is internally provided with a guide groove (24), and the outer periphery of the two clamping arms (19) is slidingly connected to the inner wall of the guide groove (24); the two clamping arms (19) are fixedly connected with anti-skid pads (25) on the facing sides, and the anti-skid pads (25) are made of anti-skid rubber.