Petroleum product condensation point tester

Abstract

The utility model provides a petroleum product condensation point tester, which relates to the technical field of petrochemical engineering, and comprises a cabinet body, the top of the cabinet body is provided with an L-shaped seat, the center of the top of the L-shaped seat is provided with a first through groove, and the outer side of the first through groove is provided with a sealing limiting groove. A stirring assembly is installed in the first penetrating groove and the sealing limiting groove, a sample storage pipe is arranged at the joint of the stirring assembly, the stirring assembly is used for stirring samples in the sample storage pipe, and the stirring assembly can effectively solve the problem of uneven temperature caused by heat conduction during natural cooling; the stirring motor drives the stirring rod and the spiral stirring blade to rotate, so that samples in the sample storage tube are uniformly heated or cooled, particularly high-viscosity oil products and impurity-containing samples are facilitated, the condensation point measurement accuracy is improved, and the sealing assembly can prevent the samples from leaking and ensure that the measurement process is safe and pollution-free.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum industry, in particular to a petroleum product pour point tester. Background Art

[0002] The Petroleum Pour Point Tester is a crucial instrument specifically designed for determining the pour point of petroleum products. Utilizing advanced temperature control and sensing technologies, it precisely simulates low-temperature environments and accurately measures the maximum temperature at which oil loses fluidity under specified test conditions. Its ease of operation and reliable data provide crucial pour point data for oil production, processing, and quality testing.

[0003] According to a Chinese patent document, a petroleum product freezing point tester (Announcement No.: CN220932846U) includes a freezing point tester housing. An inverted L-shaped vertical plate is longitudinally disposed at a corner of the top surface of the housing. The top of the liquid test tube extends to the top surface of the L-shaped vertical plate. The filling port is provided with a deodorizing top cover assembly to remove odor and prevent spillage of the petroleum liquid. The deodorizing top cover assembly includes a top cover body, a dual adsorption filter disposed within a cavity of the top cover body, and an electronic exhaust fan embedded in the top surface of the top cover body. A liquid collection assembly for collecting and processing petroleum waste liquid is disposed on the surface of the freezing point tester housing. In this petroleum product freezing point tester, odors from the oil are absorbed and filtered by the dual adsorption filter, and the filtered air is discharged through the electronic exhaust fan. The top cover body also covers the filling port to reduce oil splashing.

[0004] However, the above solution still has the following deficiencies when implemented:

[0005] Under natural cooling conditions, heat transfer within the sample primarily relies on heat conduction, which is inefficient and can easily lead to uneven temperature distribution within the sample. For high-viscosity petroleum products, strong intermolecular forces and poor fluidity make heat diffusion more difficult, and local temperature gradients can easily form. For example, the edges of the sample tank may dissipate heat faster, causing the temperature to drop first, while the center area dissipates heat more slowly and has a relatively high temperature. This localized overcooling or overheating can complicate the sample's solidification process and make it difficult to accurately determine.

[0006] When the sample contains impurities, the situation is more complicated. Impurities may affect the crystallization process of petroleum products. In the absence of stirring, impurities are prone to local aggregation, changing the physical and chemical properties of the area, and thus interfering with the accurate determination of the pour point. Inaccurate pour point determination results may mislead the production, blending and application of petroleum products. For example, using petroleum products with misjudged pour points in cold areas may cause pipeline blockages, equipment failures and other problems, causing huge economic losses and safety hazards to the petroleum industry.

[0007] Therefore, we propose a petroleum product pour point tester. Utility Model Content

[0008] The purpose of this utility model is to address the shortcomings of the prior art. During natural cooling, the sample relies on heat conduction, which is inefficient and leads to uneven temperature. High-viscosity oils, due to their strong molecular forces and poor fluidity, are prone to temperature differences between the edge and the center. Impurities can also cause localized accumulation, affecting crystallization and interfering with pour point determination. Inaccurate results can mislead oil production applications, leading to pipeline blockages and equipment failures, causing significant harm.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0010] A petroleum product pour point tester, comprising a cabinet, an L-shaped seat provided on the top of the cabinet, a first through-groove provided at the center of the top of the L-shaped seat, a sealing limit groove provided on the outer side of the first through-groove, a stirring assembly installed inside the first through-groove and the sealing limit groove, a sample storage tube provided at the connection between the stirring assembly, the stirring assembly used to stir the sample inside the sample storage tube, a sealing assembly provided at the bottom of the L-shaped seat at the connection with the first through-groove, the sealing assembly used to prevent leakage of the sample when the stirring assembly is stirring;

[0011] The stirring assembly includes a stirring motor, a sealing plug-in block, a coupling, a stirring rod and a spiral stirring blade;

[0012] The sealing assembly includes a sealing block, a connecting piece and a sealing groove.

[0013] As a preferred solution of the present invention, sealing plug-in blocks are provided around the bottom of the stirring motor, a coupling is also installed at the bottom of the stirring motor, a stirring rod is provided at the output end of the stirring motor, and a spiral stirring blade is installed on the stirring rod.

[0014] As a preferred solution of the present invention, the stirring motor can drive the stirring rod to rotate through a coupling, the stirring rod and the spiral stirring blade are designed as an integral whole, and the stirring motor is inserted into the sealing limit groove through the sealing plug-in block.

[0015] As a preferred solution of the present invention, a connector is provided at the bottom of the sealing block, and a sealing groove is provided at the bottom of the connector near the outside, and the sample storage tube is inserted into the sealing groove to form a seal.

[0016] As a preferred solution of the present invention, a second through groove is further provided on both sides of the sealing limit groove, and a movable positioning clamping assembly is provided inside the two second through grooves. The movable positioning clamping assembly is used to clamp and adjust the sample storage tube up and down. The movable positioning clamping assembly includes a servo motor, a screw rod, a slider, a mounting seat, a number of limit slide rails, a number of compression springs and a clamping rubber seat.

[0017] As a preferred solution of the present invention, a screw rod is installed at the output end of the servo motor, a slider is installed on the screw rod, and a mounting seat is fixedly connected to the connection of the slider. Several limiting slide rails are provided inside the mounting seat and on the front and back sides. Several of the limiting slide rails are connected to the clamping rubber seat through several sliders, and several compression springs are also provided between the clamping rubber seat and the mounting seat.

[0018] As a preferred solution of the present invention, the clamping rubber seat can slide on the limiting slide rail through a slider, and several compression springs are used to drive the clamping rubber seat to clamp the sample storage tube. A detection platform is also provided at the bottom of the screw rod, and the detection platform is connected to the screw rod through a bearing.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] In the utility model, the stirring component can effectively solve the problem of uneven temperature caused by heat conduction during natural cooling. The stirring motor drives the stirring rod and the spiral stirring blade to rotate, so that the sample in the sample tube is evenly heated or cooled, which is especially beneficial for high-viscosity oils and samples containing impurities, and improves the accuracy of the freezing point determination. The sealing component can prevent sample leakage, ensuring that the measurement process is safe and pollution-free. The mobile positioning clamping component can accurately clamp the sample tube and adjust it up and down, which is convenient for processing samples at different heights. The servo motor drives the lead screw to move the slider and the mounting seat, and cooperates with the limit slide rail, compression spring and clamping rubber seat to stably clamp and buffer and protect the sample tube, thereby improving the practicality and reliability of the petroleum product freezing point tester as a whole, ensuring the accuracy of the measurement results, providing a reliable basis for the production and application of petroleum products, and reducing safety hazards and economic losses caused by measurement errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of a petroleum product pour point tester provided by the utility model;

[0022] Figure 2 This is a schematic diagram of the main cross-sectional structure of a petroleum product pour point tester provided by the utility model;

[0023] Figure 3 The utility model provides a petroleum product pour point tester Figure 2 A schematic diagram of the structure at center A;

[0024] Figure 4 This is a schematic diagram of a mobile positioning clamping assembly of a petroleum product pour point tester provided by the utility model;

[0025] Figure 5 A schematic diagram of a stirring assembly of a petroleum product pour point tester provided by the utility model;

[0026] Figure 6 A schematic diagram of an L-shaped base of a petroleum product pour point tester provided by the utility model;

[0027] Figure 7 The utility model provides a schematic diagram of a sealing component of a petroleum product pour point tester.

[0028] Legend: 1. Cabinet; 2. L-shaped seat; 3. First through-groove; 4. Second through-groove; 5. Sealing limit groove; 6. Stirring motor; 7. Sealing plug-in block; 8. Coupling; 9. Stirring rod; 10. Spiral stirring blade; 11. Sealing block; 12. Connector; 13. Sealing groove; 14. Sample tube; 15. Servo motor; 16. Screw; 17. Slider; 18. Mounting seat; 19. Limiting slide rail; 20. Clamping rubber seat; 21. Compression spring; 22. Testing table. DETAILED DESCRIPTION

[0029] The following will combine 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, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to relevant references, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] Example

[0034] like Figure 1-7 As shown, the utility model provides a technical solution: the stirring component plays a key role in the entire freezing point tester, and its structural design is closely related to the sample stirring effect. The stirring motor 6 serves as the power source, and the sealing plug-in blocks 7 arranged around the bottom are to be able to be stably and sealedly inserted into the sealing limit groove 5. This design not only ensures the stability of the stirring motor 6 during operation, but also prevents impurities or oil products that may appear from seeping out from the connection gap when stirring high-viscosity oil products or samples containing impurities, thereby avoiding contamination or damage to other parts of the instrument.

[0035] The coupling 8 installed at the bottom of the stirring motor 6 plays the role of connecting the output end of the stirring motor 6 and the stirring rod 9. It can effectively and smoothly transmit the rotational power of the motor to the stirring rod 9, making the rotation of the stirring rod 9 smoother and more accurately controllable. The stirring rod 9 and the spiral stirring blade 10 adopt an integrated design. This design enhances the integrity and rigidity of the stirring structure. When the stirring motor 6 drives the stirring rod 9 to rotate through the coupling 8, the spiral stirring blade 10, due to its special spiral shape, can form a stirring flow field similar to spiral propulsion in the sample storage tube 14, which is suitable for high For viscous oil products, the spiral stirring blade 10 rotates like a propeller in a viscous liquid, continuously pushing the oil molecules and breaking the strong interaction force between the molecules, so that the oil molecules gradually disperse and begin to flow, thereby accelerating the transfer of heat in the oil. For samples containing impurities, the stirring action of the spiral stirring blade 10 can prevent the impurities from gathering at the bottom or in a corner of the sample tube 14 due to gravity or local temperature differences, so that the impurities are evenly dispersed in the sample, ensuring the consistency of the entire sample during the heating or cooling process, thereby improving the accuracy of the freezing point determination.

[0036] The core purpose of the sealing assembly is to prevent the sample from leaking out and ensure that the measurement process is carried out in a safe and pollution-free environment. The connector 12 at the bottom of the sealing block 11 connects the sealing block 11 to the sealing groove 13 opened on the outside of the bottom. When the sample tube 14 is inserted into the sealing groove 13, the inner wall of the sealing groove 13 fits tightly with the outer wall of the sample tube 14. This fit is not a simple contact, but through the special shape design of the sealing groove 13 and the use of sealing materials (such as rubber or other oil-resistant sealing materials), a reliable sealing interface is formed. When the stirring motor 6 drives the stirring rod 9 and the spiral stirring blade 10 to stir the sample in the sample tube 14, the sample will produce a certain flow and shaking. The sealing assembly, with its tight sealing structure, can withstand this internal pressure and shaking, and effectively prevent the sample from leaking from the connection between the sample tube 14 and the sealing groove 13, avoiding the safety hazards that may be caused by sample leakage, such as polluting the laboratory environment, damaging instruments and equipment, and causing potential harm to operators.

[0037] The mobile positioning clamping assembly is mainly used to accurately clamp and adjust the sample tube 14 up and down to meet the processing requirements of samples of different heights. The servo motor 15 serves as a power driving source, and the screw rod 16 connected to its output end will rotate when the motor rotates. The slider 17 installed on the screw rod 16 will move up and down along the axis of the screw rod 16 when the screw rod 16 rotates due to the threaded matching relationship with the screw rod 16. The slider 17 is fixedly connected to the mounting seat 18, so the mounting seat 18 will also move up and down synchronously with the slider 17.

[0038] Several limiting slide rails 19 opened on the front and back sides of the mounting seat 18 provide a stable sliding track for the clamping rubber seat 20. The clamping rubber seat 20 is connected to the limiting slide rail 19 through the slider 17, so that it can slide smoothly along the limiting slide rail 19 in the mounting seat 18, and several compression springs 21 arranged between the mounting seat 18 and the clamping rubber seat 20 play a key clamping and buffering role. When it is necessary to clamp the sample tube 14, the servo motor 15 drives the screw rod 16 to rotate, so that the mounting seat 18 drives the clamping rubber seat 20 to approach the sample tube 14. As the clamping rubber seat 20 contacts the sample tube 14, the sample tube 14 is 14 will generate an outward thrust on the clamping rubber seat 20, and this thrust will compress the compression spring 21. The compression spring 21 will generate an inward reaction force during the compression process. This reaction force acts on the sample tube 14 to achieve stable clamping of the sample tube 14. At the same time, due to the existence of the compression spring 21, if the sample tube 14 is subjected to slight external collision or vibration during the clamping process, the compression spring 21 can absorb the energy through its own elastic deformation, and play a role in buffering and protecting the sample tube 14, preventing the sample tube 14 from breaking or shifting due to external force, and ensuring the stability and safety of the sample during the measurement process.

[0039] In summary, when in use, first, insert the sample tube 14 into the sealing groove 13 of the sealing assembly. The sealing groove 13 and the sample tube 14 are tightly matched to form a seal. The mobile positioning clamping assembly is started, and the servo motor 15 drives the screw rod 16 to rotate, driving the slider 17, the mounting seat 18 and the clamping rubber seat 20 to move toward the sample tube 14. Under the action of the compression spring 21, the clamping rubber seat 20 stably clamps the sample tube 14, and the up and down positions of the sample tube 14 can be accurately adjusted according to the height of the sample tube 14 through the forward and reverse rotation of the servo motor 15. The stirring motor 6 is inserted into the sealing limit groove 5 through the sealing plug-in block 7 to ensure that the installation is stable and the seal is good. The stirring motor 6 is started, and the power of the motor is transmitted to the sample tube 14 through the coupling 8. The stirring rod 9 drives the spiral stirring blade 10 to rotate in the sample tube 14 to stir the sample. During the cooling or heating process of the sample, the stirring component causes the sample in the sample tube 14 to be evenly heated or cooled, especially for high-viscosity oils or samples containing impurities, effectively preventing local temperature unevenness and impurity aggregation, and ensuring the accuracy of the freezing point determination. During the entire process, the sealing component always prevents sample leakage to ensure that the measurement environment is safe and pollution-free. The mobile positioning clamping component maintains the stability and appropriate position of the sample tube 14. The various components work together to improve the practicality and reliability of the petroleum product freezing point tester, provide accurate measurement results for related links of petroleum products, and reduce the adverse effects caused by errors.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A petroleum product pour point tester, comprising a cabinet (1), characterized in that: The cabinet (1) is provided with an L-shaped seat (2) at the top, a first through groove (3) is provided at the center of the top of the L-shaped seat (2), a sealing limit groove (5) is provided on the outside of the first through groove (3), a stirring assembly is installed inside the first through groove (3) and the sealing limit groove (5), a sample storage tube (14) is provided at the connection of the stirring assembly, and the stirring assembly is used to stir the sample inside the sample storage tube (14), and a sealing assembly is provided at the bottom of the L-shaped seat (2) and at the connection of the first through groove (3), and the sealing assembly is used to prevent the sample from leaking out when the stirring assembly is stirring; The stirring assembly comprises a stirring motor (6), a sealing plug-in block (7), a coupling (8), a stirring rod (9) and a spiral stirring blade (10); The sealing assembly comprises a sealing block (11), a connecting piece (12) and a sealing groove (13).

2. A petroleum product pour point tester according to claim 1, characterized in that: The bottom of the stirring motor (6) is provided with sealing plug-in blocks (7) around its periphery, and a coupling (8) is also installed at the bottom of the stirring motor (6). The output end of the stirring motor (6) is provided with a stirring rod (9), and a spiral stirring blade (10) is installed on the stirring rod (9).

3. A petroleum product pour point tester according to claim 2, characterized in that: The stirring motor (6) can drive the stirring rod (9) to rotate via a coupling (8); the stirring rod (9) and the spiral stirring blade (10) are designed as an integrated whole; the stirring motor (6) is inserted into the sealing limit groove (5) via the sealing plug-in block (7).

4. A petroleum product pour point tester according to claim 3, characterized in that: A connecting piece (12) is provided at the bottom of the sealing block (11), and a sealing groove (13) is provided at the bottom of the connecting piece (12) and near the outside. The sample storage tube (14) is inserted into the sealing groove (13) to form a seal.

5. A petroleum product pour point tester according to claim 4, characterized in that: Second through grooves (4) are further provided on both sides of the sealing limit groove (5), and a movable positioning clamping assembly is provided inside the two second through grooves (4). The movable positioning clamping assembly is used to clamp and adjust the sample storage tube (14) up and down. The movable positioning clamping assembly includes a servo motor (15), a screw rod (16), a slider (17), a mounting seat (18), a plurality of limit slide rails (19), a plurality of compression springs (21) and a clamping rubber seat (20).

6. A petroleum product pour point tester according to claim 5, characterized in that: A screw rod (16) is installed at the output end of the servo motor (15), a slider (17) is installed on the screw rod (16), and a mounting seat (18) is fixedly connected to the connection of the slider (17). A plurality of limiting slide rails (19) are provided inside the mounting seat (18) and on the front and back sides. The plurality of limiting slide rails (19) are connected to the clamping rubber seat (20) through the plurality of sliders (17), and a plurality of compression springs (21) are provided between the clamping rubber seat (20) and the mounting seat (18).

7. A petroleum product pour point tester according to claim 6, characterized in that: The clamping rubber seat (20) can slide on the limiting slide rail (19) through a slider (17), and a plurality of compression springs (21) are used to drive the clamping rubber seat (20) to clamp the sample storage tube (14). A detection platform (22) is also provided at the bottom of the screw rod (16), and the detection platform (22) is connected to the screw rod (16) through a bearing.

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