Calibrating device for petroleum densimeter

Abstract

The utility model discloses a petroleum densimeter calibration device, which comprises a support and a calibration mechanism, a support plate is fixedly arranged on the support, an electric push rod is fixedly arranged on the support plate, a support frame is fixedly arranged at the driving end of the electric push rod, a limiting rod is fixedly arranged in the support frame, a movable block is movably arranged on the outer side of the limiting rod, and the movable block is fixedly arranged on the support plate. Two pushing rods are fixedly arranged on one side of the moving block, a first motor is fixedly arranged on the supporting frame, the driving end of the first motor penetrates through the supporting frame to be fixedly provided with a half gear, a toothed belt matched with the half gear is arranged at the upper end of the moving block, and a moving arm is movably arranged in the support; the number of the moving arms is two, one side of each moving arm is provided with a sponge block, the to-be-calibrated petroleum densimeter placed in reference liquid can be shaken, bubbles adhering to the outside of the to-be-calibrated petroleum densimeter can be discharged, and therefore interference to the calibration process is avoided, and the accuracy of the calibration result is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of petroleum densitometer calibration technology, and more specifically, to a petroleum densitometer calibration device. Background Technology

[0002] Petroleum densitometers are primarily used in the petroleum industry to determine the density of crude oil, petroleum products, and both petroleum and non-petroleum products. This measurement is crucial for the measurement, transportation, storage, and refining processes of petroleum. Petroleum densitometer calibration devices are used to ensure the accuracy of petroleum densitometer measurements. Patent document CN201897557U discloses a petroleum densitometer calibration device. This device includes a fixed frame, a constant temperature bath, and a balance. The constant temperature bath is located within the fixed frame, and the balance is mounted on the top surface of the fixed frame. A suspension rope is attached to the balance. A glass measuring cylinder, comprising a main measuring cylinder and an auxiliary measuring cylinder, is placed inside the constant temperature bath. The main measuring cylinder is connected to the auxiliary measuring cylinder via a liquid level adjustment device. A thermometer is installed inside the main measuring cylinder. This invention relies on the up-and-down movement of the reference liquid level to achieve the switching between different calibration points of the densitometer, thereby ensuring that the reference liquid level is tangent to the required calibration point, thus meeting the densitometer calibration requirements. This fills the gap in calibrating low-range petroleum densitometers, expands the verification range of petroleum densitometers, improves the automation level of verification, increases verification efficiency, reduces measurement errors, and improves the uncertainty level of verification and calibration.

[0003] However, during the use of this device, when the petroleum density meter to be calibrated is placed in the reference liquid inside the glass graduated cylinder, air bubbles easily adhere to the sensing part of the meter. The presence of air bubbles interferes with the calibration process, causing the calibration results to lose accuracy. Secondly, after the petroleum density meter is calibrated, it needs to be removed from the reference liquid. However, the entire device does not have any parts for cleaning the petroleum density meter, which makes it easy for the adhered reference liquid to drip into the surrounding environment when the meter is removed, thus causing pollution to the surrounding environment. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the problems existing in the prior art, this utility model provides a petroleum density meter calibration device to solve the technical problem mentioned in the background art, where air bubbles easily adhere to the sensing part of the petroleum density meter after it is placed in the reference liquid inside the glass measuring cylinder, causing the calibration results to lose accuracy.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a petroleum density meter calibration device, comprising a bracket and a calibration mechanism. A support plate is fixedly mounted on the bracket, an electric push rod is fixedly mounted on the support plate, a support frame is fixedly mounted on the drive end of the electric push rod, a limiting rod is fixedly mounted inside the support frame, a movable block is movably mounted outside the limiting rod, a pushing rod is fixedly mounted on one side of the movable block, and there are two pushing rods. A first motor is fixedly mounted on the support frame, a half gear is fixedly mounted through the drive end of the first motor and passes through the support frame, and a toothed belt that meshes with the half gear is provided on the upper end of the movable block. Two movable arms are movably mounted inside the bracket, and a sponge block is installed on one side of each movable arm.

[0008] The present invention is further configured such that the bracket is provided with an adjustment shell, a bidirectional lead screw is rotatably provided inside the adjustment shell, and a second motor is fixedly provided on one side of the bracket. The drive end of the second motor extends into the adjustment shell and is fixedly connected to the bidirectional lead screw, so as to facilitate the rotation of the bidirectional lead screw.

[0009] The present invention is further configured such that a movable seat is threadedly connected to the bidirectional lead screw, and the number of movable seats is two, which facilitates the movement of the movable seats.

[0010] The present invention is further configured such that one end of each of the movable seats passes through the adjustment shell and is fixedly connected to the movable arm, which facilitates the movement of the movable arm.

[0011] The present invention is further configured such that a mounting groove is provided on one side of the movable arm, a mounting block is movably provided in the mounting groove, and a mounting plate is fixedly provided on one side of the mounting block through the mounting groove. The mounting plate is fixedly connected to the sponge block to facilitate the installation of the sponge block.

[0012] The present invention is further configured such that a fixed chamber is provided inside the movable arm, and a plug rod is movably provided inside the fixed chamber. The upper end of the plug rod extends to the outer end of the movable arm, and the other end of the plug rod is inserted into the mounting block to facilitate fixing the mounting block.

[0013] The present invention is further provided that the mounting block is provided with a socket that mates with the insertion rod, so as to facilitate fixing the mounting block.

[0014] The present invention is further configured such that a limiting ring is fixedly provided on the insertion rod in the fixed chamber, and a spring is movably provided on the limiting ring. The spring is movably sleeved on the outside of the insertion rod to facilitate the movement of the insertion rod.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a petroleum density meter calibration device, which has the following beneficial effects:

[0017] 1. Through the cooperation of bracket, support plate, electric push rod, support frame, limit rod, moving block, push rod, first motor, half gear and toothed belt, the petroleum density meter to be calibrated placed in the reference liquid can be shaken to expel the air bubbles adhering to its exterior, thereby avoiding interference with the calibration process and ensuring the accuracy of the calibration results.

[0018] 2. By coordinating the adjusting shell, bidirectional lead screw, second motor, moving seat, moving arm, and sponge block, the calibrated petroleum density meter can be wiped when it is removed, preventing the adhering reference liquid from dripping everywhere and protecting the surrounding working environment.

[0019] 3. The sponge block can be quickly installed by using the mounting slot, mounting block, mounting plate, fixing chamber, insertion rod, insertion hole, limit ring and spring. The whole operation method is simple, saves installation time, and is also very convenient when it needs to be disassembled for cleaning or replacement. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a petroleum density meter calibration device in use.

[0021] Figure 2 This is a schematic cross-sectional view of the support and its connecting components when the sponge block is in a moving state.

[0022] Figure 3 A schematic diagram of the support frame and its connecting components when the push rod is in a moving state;

[0023] Figure 4 This is a schematic cross-sectional view of the adjusting shell and its connecting components when the sponge block is in a moving state.

[0024] Figure 5 This is a cross-sectional structural diagram of the fixing chamber and its connecting components when the sponge block is installed.

[0025] In the diagram: 1. Bracket; 2. Support plate; 3. Electric push rod; 4. Support frame; 5. Limiting rod; 6. Moving block; 7. Push rod; 8. First motor; 9. Half gear; 10. Toothed belt; 11. Moving arm; 12. Sponge block; 13. Adjusting shell; 14. Two-way lead screw; 15. Second motor; 16. Moving seat; 17. Mounting slot; 18. Mounting block; 19. Mounting plate; 20. Fixed chamber; 21. Insert rod; 22. Insertion hole; 23. Limiting ring; 24. Spring. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A petroleum density meter calibration device includes a bracket 1 and a calibration mechanism. A support plate 2 is fixedly mounted on the bracket 1, and an electric push rod 3 is fixedly mounted on the support plate 2. A support frame 4 is fixedly mounted on the drive end of the electric push rod 3. A limiting rod 5 is fixedly mounted inside the support frame 4, and a moving block 6 is movably mounted on the outside of the limiting rod 5. A push rod 7 is fixedly mounted on one side of the moving block 6. There are two push rods 7. A first motor 8 is fixedly mounted on the support frame 4, and a half gear 9 is fixedly mounted on the drive end of the first motor 8 through the support frame 4. A toothed belt 10 that cooperates with the half gear 9 is provided on the upper end of the moving block 6.

[0030] In this embodiment, the entire device is supported by a bracket 1. A calibration mechanism calibrates the petroleum density meter. The calibration process of the entire calibration mechanism for the petroleum density meter has been disclosed in patent publication number CN201897557U, entitled "Petroleum Density Meter Calibration Device," and its calibration process, principle, and structure will not be repeated here. During the entire calibration process, a balance is installed on the bracket 1. The balance is connected to the petroleum density meter to be calibrated via a suspension rope. After the petroleum density meter to be calibrated is placed in the reference liquid inside the glass graduated cylinder, the electric push rod 3 is activated. The electric push rod 3 drives the support frame 4 to move. The support frame 4 drives the limiting rod 5, the moving block 6, and the pushing rod 7 to move, causing the two pushing rods 7 to move to both sides of the suspension rope. The first motor 8 is then activated, driving the half gear 9 to rotate. When the half gear 9 rotates to engage with the toothed belt 10, the toothed belt 10 moves with the rotation of the half gear 9, driving the toothed belt 10 to move. The moving block 6 moves along the limiting rod 5, the spring 24 is compressed, and the moving block 6 drives the two push rods 7 to move, so that one of the push rods 7 pushes the suspension rope. When the half gear 9 rotates to the point where the toothed belt 10 separates, the two push rods 7 move back to their original positions under the push of the spring 24. At the same time, the other push rod 7 pushes the suspension rope to move back to its original position. This operation is repeated, causing the suspension rope to sway. The suspension rope drives the connected petroleum density meter to be calibrated to sway back and forth, thereby shaking out the air bubbles adhering to the sensing part of the petroleum density meter to be calibrated, and improving the accuracy of the calibration of the petroleum density meter to be calibrated.

[0031] Please see Figures 1-5 As one embodiment for moving the sponge block 12: a movable arm 11 is movably provided inside the bracket 1, and there are two movable arms 11. A sponge block 12 is installed on one side of each movable arm 11. An adjustment shell 13 is provided on the bracket 1. A bidirectional lead screw 14 is rotatably provided inside the adjustment shell 13. A second motor 15 is fixedly provided on one side of the bracket 1. The driving end of the second motor 15 extends into the adjustment shell 13 and is fixedly connected to the bidirectional lead screw 14. A movable seat 16 is threadedly connected to the bidirectional lead screw 14. There are two movable seats 16. One end of each movable seat 16 passes through the adjustment shell 13 and is fixedly connected to the movable arm 11.

[0032] Specifically, after the petroleum density meter to be calibrated is completed, the second motor 15 is started. The second motor 15 drives the bidirectional lead screw 14 to rotate. The bidirectional lead screw 14 has two threaded areas in opposite directions, causing the two moving seats 16 to move in adjacent directions along the inside of the adjusting shell 13. The moving seats 16 drive the moving arm 11 to move, and the moving arm 11 drives the installed sponge block 12 to move, so that the two sponge blocks 12 come into contact and clamp the suspension rope between the two sponge blocks 12. Pulling the suspension rope causes the petroleum density meter to be calibrated to move upward, so that the petroleum density meter to be calibrated passes between the two sponge blocks 12, absorbing the reference liquid adhering to the petroleum density meter and preventing the reference liquid from dripping and polluting the surrounding environment as the petroleum density meter is removed.

[0033] Please see Figures 1-5 As one embodiment of installing the sponge block 12: the movable arm 11 is provided with an installation groove 17 on one side, and an installation block 18 is movably provided in the installation groove 17. An installation plate 19 is fixedly provided through the installation groove 17 on one side of the installation block 18. The installation plate 19 is fixedly connected to the sponge block 12. The movable arm 11 is provided with a fixing chamber 20. An insertion rod 21 is movably provided in the fixing chamber 20. The upper end of the insertion rod 21 extends to the outer end of the movable arm 11. The other end of the insertion rod 21 is inserted into the installation block 18. The installation block 18 is provided with an insertion hole 22 that cooperates with the insertion rod 21. A limiting ring 23 is fixedly provided on the insertion rod 21 in the fixing chamber 20. A spring 24 is movably provided on the limiting ring 23. The spring 24 is movably sleeved on the outside of the insertion rod 21.

[0034] Specifically, when it is necessary to install the sponge block 12, pull the insertion rod 21. The insertion rod 21 moves the limiting ring 23, and the spring 24 is compressed, which moves the sponge block 12 and the mounting plate 19. The mounting plate 19 moves the mounting block 18, so that the mounting block 18 moves into the mounting groove 17. At this time, the insertion hole 22 is aligned with the insertion rod 21. Release the insertion rod 21. Under the push of the spring 24, the limiting ring 23 moves the insertion rod 21 back to its original position. The lower end of the insertion rod 21 will be inserted into the insertion hole 22, thereby fixing the mounting block 18. The sponge block 12 can then be installed. When it is necessary to remove the sponge block 12 for cleaning or replacement, the reverse operation is used.

[0035] In summary, when using the overall equipment:

[0036] When it is necessary to remove air bubbles adhering to the petroleum density meter to be calibrated by inserting it into the reference liquid, the entire device is supported by the bracket 1. The petroleum density meter is calibrated by the calibration mechanism. The entire calibration process of the petroleum density meter is disclosed in the patent entitled "Petroleum Density Meter Calibration Device" (CN201897557U), and its calibration process, principle, and structure will not be described in detail here. During the entire calibration process, since the bracket 1 is equipped with a balance, the balance is connected to the petroleum density meter to be calibrated by a suspension rope. After the petroleum density meter to be calibrated is placed in the reference liquid in the glass measuring cylinder, the electric push rod 3 is activated. The electric push rod 3 drives the support frame 4 to move. The support frame 4 drives the limit rod 5, the moving block 6, and the push rod 7 to move, so that the two push rods 7 move to both sides of the suspension rope. The first motor 8 is activated, and the first motor 8 drives the half gear 9 to rotate. When the half gear 9 rotates to engage with the toothed belt 10, the toothed belt 10 moves with the rotation of the half gear 9. The toothed belt 10 drives the half gear 9 to engage with the toothed belt 10. The moving block 6 moves along the limiting rod 5, compressing the spring 24. The moving block 6 drives the two push rods 7 to move, causing one of the push rods 7 to push the suspension rope. When the half gear 9 rotates to the point where the toothed belt 10 separates, the two push rods 7 move back to their original positions under the push of the spring 24. At the same time, the other push rod 7 pushes the suspension rope back to its original position. This operation is repeated, causing the suspension rope to sway. The suspension rope drives the connected petroleum density meter to calibrate to sway back and forth, thereby expelling the air bubbles adhering to the sensing part of the petroleum density meter to calibrate and improving the accuracy of the calibration of the petroleum density meter to calibrate.

[0037] When the sponge block 12 needs to be installed, pull the insertion rod 21. The insertion rod 21 moves the limiting ring 23, compresses the spring 24, and moves the sponge block 12 and the mounting plate 19. The mounting plate 19 moves the mounting block 18, so that the mounting block 18 moves into the mounting groove 17. At this time, the insertion hole 22 is aligned with the insertion rod 21. Release the insertion rod 21. Under the push of the spring 24, the limiting ring 23 moves the insertion rod 21 back to its original position. The lower end of the insertion rod 21 will be inserted into the insertion hole 22, thereby fixing the mounting block 18. The sponge block 12 can then be installed. When it is necessary to remove the sponge block 12 for cleaning or replacement, the reverse operation can be used.

[0038] When the calibrated petroleum densitometer needs to be removed, after calibration, the second motor 15 is activated. The second motor 15 drives the bidirectional lead screw 14 to rotate. The bidirectional lead screw 14 has two threaded sections in opposite directions, causing two moving seats 16 to move adjacently along the inside of the adjusting housing 13. The moving seats 16 drive the moving arm 11 to move, which in turn drives the installed sponge blocks 12 to move, bringing the two sponge blocks 12 into contact and clamping the suspension rope between them. Pulling the suspension rope causes the petroleum densitometer to move upwards, allowing it to pass between the two sponge blocks 12. This absorbs any reference liquid adhering to the petroleum densitometer, preventing it from dripping and contaminating the surrounding environment as the petroleum densitometer is removed.

[0039] The bracket 1 is equipped with a controller, and the electrical equipment in the entire device is controlled by the controller. Since the equipment matched with the controller is a common device, its control principle and circuit connection are existing, well-known and mature technologies. Therefore, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A petroleum density meter calibration device, comprising a support (1) and a calibration mechanism, characterized in that: A support plate (2) is fixedly provided on the bracket (1). An electric push rod (3) is fixedly provided on the support plate (2). A support frame (4) is fixedly provided at the driving end of the electric push rod (3). A limiting rod (5) is fixedly provided inside the support frame (4). A moving block (6) is movably provided on the outside of the limiting rod (5). A push rod (7) is fixedly provided on one side of the moving block (6). There are two push rods (7). A first motor (8) is fixedly provided on the support frame (4). A half gear (9) is fixedly provided through the support frame (4) at the driving end of the first motor (8). A toothed belt (10) that cooperates with the half gear (9) is provided at the upper end of the moving block (6). A moving arm (11) is movably provided inside the bracket (1). There are two moving arms (11). A sponge block (12) is installed on one side of each moving arm (11).

2. The petroleum density meter calibration device according to claim 1, characterized in that: The bracket (1) is provided with an adjustment shell (13), and a bidirectional lead screw (14) is rotatably provided inside the adjustment shell (13). A second motor (15) is fixedly provided on one side of the bracket (1), and the driving end of the second motor (15) extends into the adjustment shell (13) and is fixedly connected to the bidirectional lead screw (14).

3. The petroleum density meter calibration device according to claim 2, characterized in that: The bidirectional lead screw (14) is threadedly connected to a movable seat (16), and there are two movable seats (16).

4. The petroleum density meter calibration device according to claim 3, characterized in that: Each of the movable seats (16) has one end passing through the adjustment shell (13) and fixedly connected to the movable arm (11).

5. A petroleum density meter calibration device according to any one of claims 1 or 2, characterized in that: The movable arm (11) has a mounting groove (17) on one side, and a mounting block (18) is movably mounted in the mounting groove (17). A mounting plate (19) is fixedly mounted on one side of the mounting block (18) through the mounting groove (17). The mounting plate (19) is fixedly connected to the sponge block (12).

6. The petroleum density meter calibration device according to claim 5, characterized in that: The movable arm (11) is provided with a fixed chamber (20), and a plug rod (21) is movably provided in the fixed chamber (20). The upper end of the plug rod (21) extends to the outer end of the movable arm (11), and the other end of the plug rod (21) is inserted into the mounting block (18).

7. The petroleum density meter calibration device according to claim 6, characterized in that: The mounting block (18) is provided with a socket (22) that mates with the insertion rod (21).

8. The petroleum density meter calibration device according to claim 7, characterized in that: A limiting ring (23) is fixedly provided on the insertion rod (21) inside the fixed chamber (20), and a spring (24) is movably provided on the limiting ring (23), and the spring (24) is movably sleeved on the outside of the insertion rod (21).

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