Crude oil condensation point tester capable of rotating test tube through gear lever pressing and gravity balance

Abstract

The utility model relates to the field of crude oil testing equipment, in particular to a crude oil condensation point tester capable of rotating a test tube through gear lever pressing and gravitational equilibrium, which comprises a machine body with a compressor refrigerating system and a guide rod, the machine body is provided with a working table with a metal test aluminum bath, and a condensation point detection unit is connected in the working table. A long-strip-shaped supporting frame is arranged on the workbench and erected on the side of the condensation point detection unit, a sliding block is arranged on the supporting frame, a lifting assembly is arranged between the sliding block and the supporting frame, a rotating bearing is fixedly connected to the sliding block, a rotating rod is fixedly connected into the rotating bearing, the rotating rod is connected with a test tube bracket, and a test tube is clamped in the test tube bracket. The rotating rod is fixedly connected with a long-strip-shaped rotating plate, a rotating angle exists between the rotating plate and the top face of the workbench, the top end of the rotating plate is fixedly connected with a blocking rod, a pressing block is arranged above the blocking rod, the pressing block is fixedly connected with a connecting plate, and the effect that it is guaranteed that the speed and time are consistent when the test tubes are operated every time in the detection process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of crude oil testing equipment, in particular to a crude oil pour point tester capable of rotating a test tube by pressing a gear lever and balancing gravity. Background Art

[0002] The pour point of crude oil, also known as the freezing point, refers to the highest temperature at which crude oil loses its fluidity under certain conditions. Determining the freezing point of crude oil directly impacts its use, storage, transportation, and shipping, and is therefore of vital importance to the crude oil industry.

[0003] The current method for determining the pour point of crude oil is based on the Petroleum and Natural Gas Industry Standard SY / T 0541, "Determination of the Pour Point of Crude Oil." The specific method outlines the following: place a preheated oil sample into a test tube and cool the sample at a cooling rate of 0.5°C / min to 1°C / min until it is 8°C above the expected pour point. The fluidity of the sample is then measured every 2°C decrease in temperature. The highest temperature at which the sample does not flow when the test tube is held horizontally for 5 seconds is the pour point. Therefore, when measuring the fluidity of the sample, the test tube must be removed from the cooling bath and tilted horizontally.

[0004] When workers measure the freezing point of crude oil, they usually use a crude oil freezing point tester to carry out the measurement. The structure of the existing crude oil freezing point tester usually includes a body, a workbench is provided on the body, a metal experimental aluminum bath is provided under the workbench, the metal experimental aluminum bath is connected to a cylindrical freezing point detection unit, a compressor refrigeration system is provided in the body, the compressor refrigeration system is connected to the metal experimental aluminum bath, and the compressor refrigeration system controls the temperature of the metal experimental aluminum bath. When in use, the worker places the crude oil to be measured in a test tube, and then the worker puts the test tube into the freezing point detection unit. After the temperature of the test tube drops, the worker lifts the test tube out of the cold bath and tilts it to a horizontal position so that the fluidity of the oil sample can be observed by the human eye.

[0005] The above-mentioned prior art has the following defects:

[0006] Since the test tube is lifted and rotated manually, there is no guarantee that the operator can complete the test tube lifting and rotation operations at the same speed and time each time at each test temperature point, which will affect the repeatability of the test operation and data results. Utility Model Content

[0007] The purpose of the utility model is to provide a crude oil pour point tester that rotates a test tube by pressing a gear lever and balancing gravity, so as to ensure that the speed and time of each test tube operation during the detection process are consistent, thereby solving the problems raised in the above-mentioned background technology.

[0008] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0009] A crude oil freezing point tester that rotates a test tube by pressing a gear lever and balancing gravity, comprising a body with a compressor refrigeration system and a guide rod, the body being provided with a workbench with a metal test aluminum bath, the workbench being connected to a freezing point detection unit, the bottom of the freezing point detection unit being immersed in the metal test aluminum pot, the workbench being provided with a long strip of support frame, the support frame being erected on the side of the freezing point detection unit, the support frame being provided with a slider, a lifting assembly being provided between the slider and the support frame, the lifting assembly driving the slider to perform lifting motion along the support frame; a rotating bearing being fixedly connected to the slider, a rotating rod being fixedly connected to the rotating bearing, the rotating rod being located at the freezing point Above the detection unit, the rotating rod is perpendicular to the support frame, and the end of the rotating rod away from the support frame is fixedly connected to the test tube holder, the test tube holder is clamped in the test tube holder, and the test tube is set vertically downward; the rotating rod is fixedly connected to a long strip of rotating plate, and there is a rotation angle between the rotating plate and the top surface of the workbench, a reset assembly is provided at the bottom end of the rotating plate, and a gear lever is fixedly connected to the top of the rotating plate, and a pressing block is provided above the gear lever, and the pressing block is fixedly connected to a connecting plate, and one end of the connecting plate away from the pressing block is fixedly connected to the support frame. When the lifting assembly drives the slider to continue to rise, when the pressing block abuts against the gear lever, the rotating rod rotates and drives the test tube holder and the test tube to rotate at the same time.

[0010] As a preferred embodiment of the present invention, the lifting assembly includes a stepper motor, which is embedded in the workbench. The stepper motor is rotatably connected to a screw rod, which passes through the slider. The screw rod is threadedly connected to the slider. The end of the screw rod away from the stepper motor is rotatably connected to the support frame. A guide rod is provided in the support frame. The guide rod is parallel to the screw rod, and the guide rod observes the slider.

[0011] As a preferred embodiment of the present invention, two guide rods are provided, the two guide rods are respectively located on both sides of the screw rod, and each guide rod passes through the slider.

[0012] As a preferred embodiment of the present invention, the reset assembly includes a gravity balancing weight, which is fixedly connected to the end of the rotating plate away from the gear lever. The gravity balancing weight is abutted against a block, which is located in the direction in which the gravity balancing weight swings due to gravity, and the block is fixedly connected to the support frame.

[0013] As a preferred embodiment of the present invention, the top of the test tube is covered with a round cover-shaped detection head, and the detection head completely seals the top of the test tube.

[0014] As a preferred embodiment of the present invention, a mounting assembly is provided between the slider and the rotating bearing, the mounting assembly includes a mounting plate, the rotating bearing is fixedly connected to the mounting plate, a fixing bolt is provided on the side of the mounting plate away from the slider, the fixing bolt passes through the mounting plate and is threadedly connected to the slider.

[0015] Beneficial effects

[0016] The beneficial effects of the utility model are:

[0017] When conducting the test, the set test tube provides the test personnel with a place to place the test crude oil, and the support frame provides support for the lifting component and the slider and other workpieces. The lifting component drives the slider to perform lifting and lowering movements to realize the process of the test tube entering and extending from the freezing point detection unit. Compared with the worker's hand-held lifting process, the lifting component operation can ensure that the speed of each test tube entering and extending from the freezing point detection unit remains consistent. Since the lifting component drives the slider to lift and lower the process speed remains consistent, when the lifting component drives the slider to continue to rise, each time the pressing block contacts the gear lever, the rotational angular velocity of the rotating rod remains consistent, so that the rotational angular velocity of the test tube each time it follows the rotation of the rotating rod remains consistent. Compared with the worker's hand-held rotation operation, it is more stable, achieving the effect of ensuring the speed and time of each test tube operation during the testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 To show the structure of the support frame separately

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0022] 1. Machine body; 11. Workbench; 12. Freezing point detection unit; 2. Support frame; 21. Slider; 22. Lifting assembly; 221. Stepper motor; 222. Screw rod; 223. Guide rod; 3. Rotating bearing; 4. Rotating rod; 41. Rotating plate; 42. Gear lever; 43. Pressing block; 44. Connecting plate; 5. Test tube holder; 6. Test tube; 7. Reset assembly; 71. Gravity balance weight; 72. Stop block; 8. Mounting assembly; 81. Mounting plate; 82. Fixing bolt. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying 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 embodiments described 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 technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See Figure 1-2 As shown, a crude oil pour point tester that rotates a test tube by pressing a gear lever and balancing gravity includes a body 1 with a compressor refrigeration system and a guide rod. The body 1 is provided with a workbench 11 with a metal test aluminum bath. A pour point detection unit 12 is connected to the workbench 11. The bottom of the pour point detection unit 12 is immersed in the metal test aluminum pot. By arranging a mechanism for rotation on the side of the pour point detection unit 12 and adopting mechanical operation instead of manual operation by workers, the speed and rotation angle of each time the test tube 6 is lifted and rotated are consistent, thereby making the time required for lifting and rotating the test tube 6 consistent, achieving the effect of ensuring that the speed and time of each operation of the test tube 6 during the detection process are consistent.

[0025] See Figure 1-2 As shown, a long strip-shaped support frame 2 is provided on the workbench 11, and the opening of the support frame 2 is arranged toward the freezing point test unit, and the support frame 2 is perpendicular to the workbench 11. The support frame 2 is erected on the side of the freezing point detection unit 12, and a square slider 21 is provided on the support frame 2. A lifting assembly 22 is provided between the slider 21 and the support frame 2, and the lifting assembly 22 includes a stepping motor 221. The stepping motor 221 is embedded in the workbench 11, and the stepping motor 221 is rotatably connected to a screw rod 222, which passes through the slider 21. The screw rod 222 is threadedly connected to the slider 21, and the end of the screw rod 222 away from the stepping motor 221 is rotatably connected to the support frame 2. A guide rod 223 is provided in the support frame 2, and two guide rods are provided. The two guide rods are respectively located on both sides of the screw rod 222, and each guide rod passes through the slider 21. The guide rod 223 is parallel to the screw rod 222. The guide rod 223 observes the slider 21. By using the stepper motor 221, the slider 21 is driven to move up and down along the support frame 2. The stepper motor 221 drives the screw rod 222 to rotate, so that the slider 21 can slide stably in a straight line under the drive of the screw rod 222 and the constraint of the guide rod 223, thereby improving the stability during lifting.

[0026] The side of the slider 21 away from the support frame 2 is fixedly connected to the rotating bearing 3 through the mounting assembly 8. The mounting assembly 8 includes a mounting plate 81. The rotating bearing 3 is fixedly connected to the mounting plate 81. A fixing bolt 82 is provided on the side of the mounting plate 81 away from the slider 21. The fixing bolt 82 passes through the mounting plate 81 and is threadedly connected to the slider 21.

[0027] A rotating rod 4 is fixedly connected to the rotating bearing 3, and the circumferential outer wall of the rotating rod 4 is fixedly connected to the inner wall of the bearing. The rotating rod 4 is located above the freezing point detection unit 12, and the rotating rod 4 is perpendicular to the support frame 2. The end of the rotating rod 4 away from the support frame 2 is fixedly connected to the test tube holder 5, and the test tube holder 5 holds a test tube 6. The top of the test tube 6 is covered with a round cover-shaped detection head, which completely seals the top of the test tube 6 with the kettle cover, and the test tube 6 is set vertically downward. The rotating rod 4 is fixedly connected to a long strip of rotating plate 41, and there is a rotation angle between the rotating plate 41 and the top surface of the workbench 11. A reset assembly 7 is provided at the bottom end of the rotating plate 41. A gear lever 42 is fixedly connected to the top of the rotating plate 41, and a pressing block 43 is provided above the gear lever 42. The pressing block 43 is fixedly connected to a connecting plate 44, and the end of the connecting plate 44 away from the pressing block 43 is fixedly connected to the support frame 2.

[0028] The reset assembly 7 includes a gravity balancing weight 71, which is fixedly connected to the end of the rotating plate 41 away from the gear lever 42. The gravity balancing weight 71 is abutted against a stop block 72, which is located in the direction in which the gravity balancing weight 71 swings due to gravity. The stop block 72 is fixedly connected to the support frame 2.

[0029] A specific application of this embodiment is:

[0030] When conducting the test, first, the worker injects crude oil into the test tube 6. After the injection is completed, the worker snaps the test head onto the test tube 6. After the snapping is completed, the stepper motor 221 reverses and drives the screw rod 222 to rotate. After the screw rod 222 rotates, the slider 21 drives the slider 21 to descend. After the slider 21 descends, it drives the test tube 6 to be immersed in the freezing point detection unit 12, and the temperature in the freezing point detection unit 12 begins to drop.

[0031] When the temperature of the crude oil in test tube 6 drops to the desired measurement temperature, stepper motor 221 rotates forward, driving screw 222 to rotate synchronously. As screw 222 rotates, slider 21, constrained by guide rod 223, ascends linearly. Slider 21, via mounting assembly 8, drives rotating rod 4 to ascend synchronously. When it ascends to the point where shift rod 42 abuts pressing block 43, rotating rod 4 drives test tube holder 5 and test tube 6 to begin rotating. As slider 21 continues to ascend, rotating rod 4 drives test tube holder 5 and test tube 6 to rotate at a predetermined angular velocity, which is observed by the worker. Simultaneously, as test tube 6 rotates, the higher the angle at which gravity counterweight 71 rises, the greater the gravitational potential energy it possesses. When test tube 6 reaches the desired angle, stepper motor 221 stops, and test tube 6 stops at that angle. After the worker completes their observation, stepper motor 221 begins to reverse, lowering gravity balance weight 71. Once lever 42 separates from pressing block 43, gravity balance weight 71 returns to abutment against stopper 72. Stepper motor 221, in conjunction with lifting assembly 22, then descends back into freezing point detection unit 12 for subsequent testing. In summary, these steps ensure consistent speed and timing for each test tube 6 operation during testing.

[0032] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the scope of protection of the present invention.

Claims

1. A crude oil freezing point tester that rotates a test tube by pressing a gear lever and balancing gravity, comprising a body (1) with a compressor refrigeration system and a guide rod, the body (1) being provided with a workbench (11) with a metal test aluminum bath, a freezing point detection unit (12) being connected to the workbench (11), the bottom of the freezing point detection unit (12) being immersed in the metal test aluminum pot, characterized in that: The workbench (11) is provided with a long strip support frame (2), the support frame (2) is erected on the side of the solidification point detection unit (12), a slider (21) is provided on the support frame (2), a lifting assembly (22) is provided between the slider (21) and the support frame (2), and the lifting assembly (22) drives the slider (21) to move up and down along the support frame (2); a rotating bearing (3) is fixedly connected to the slider (21), a rotating rod (4) is fixedly connected to the rotating bearing (3), the rotating rod (4) is located above the solidification point detection unit (12), the rotating rod (4) is perpendicular to the support frame (2), and the end of the rotating rod (4) away from the support frame (2) is fixedly connected to a test tube bracket (5), and a test tube (6) is clamped in the test tube bracket (5). The test tube (6) is arranged vertically downward; the rotating rod (4) is fixedly connected with a long rotating plate (41), and there is a rotating angle between the rotating plate (41) and the top surface of the workbench (11); a reset assembly (7) is provided at the bottom end of the rotating plate (41); a shift rod (42) is fixedly connected to the top end of the rotating plate (41); a pressing block (43) is provided above the shift rod (42); the pressing block (43) is fixedly connected with a connecting plate (44); an end of the connecting plate (44) away from the pressing block (43) is fixedly connected to the support frame (2); when the lifting assembly (22) drives the slider (21) to continuously rise, after the pressing block (43) abuts against the shift rod (42), the rotating rod (4) rotates and drives the test tube bracket (5) and the test tube (6) to rotate simultaneously.

2. The crude oil pour point tester with lever pressing and test tube rotation by gravity balance according to claim 1, characterized in that: The lifting assembly (22) includes a stepper motor (221), which is embedded in the workbench (11). The stepper motor (221) is rotatably connected to a screw rod (222), which passes through the slider (21). The screw rod (222) is threadedly connected to the slider (21). One end of the screw rod (222) away from the stepper motor (221) is rotatably connected to the support frame (2). A guide rod (223) is provided in the support frame (2). The guide rod (223) is parallel to the screw rod (222), and the guide rod (223) observes the slider (21).

3. The crude oil pour point tester with lever pressing and test tube rotation by gravity balance according to claim 2, characterized in that: Two guide rods are provided, and the two guide rods are respectively located on both sides of the screw rod (222), and each guide rod passes through the slider (21).

4. The crude oil pour point tester with lever pressing and test tube rotation by gravity balance according to claim 3, characterized in that: The reset assembly (7) includes a gravity balancing weight (71), which is fixedly connected to the end of the rotating plate (41) away from the shift rod (42), and the gravity balancing weight (71) is in contact with a stopper (72), which is located in the direction in which the gravity balancing weight (71) swings due to gravity, and the stopper (72) is fixedly connected to the support frame (2).

5. The crude oil pour point tester with lever pressing and test tube rotation by gravity balance according to claim 4, characterized in that: The top of the test tube (6) is covered with a round cap-shaped detection head, which completely seals the top of the test tube (6).

6. The crude oil pour point tester with lever pressing and test tube rotation by gravity balance according to claim 5, characterized in that: A mounting assembly (8) is provided between the slider (21) and the rotating bearing (3), the mounting assembly (8) comprising a mounting plate (81), the rotating bearing (3) being fixedly connected to the mounting plate (81), a fixing bolt (82) being provided on a side of the mounting plate (81) away from the slider (21), the fixing bolt (82) passing through the mounting plate (81) and then being threadedly connected to the slider (21).

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