A calibration device based on a petroleum moisture content analyzer

Abstract

This utility model relates to the field of petroleum testing technology and discloses a calibration device based on a petroleum water content analyzer. The device includes a housing, which comprises a pressure control mechanism for pressure control and a gas-liquid separation mechanism for gas-liquid separation. An oil inlet pipe is fixedly sleeved on one side of the top of the housing, and a support base is fixedly connected to one side of the inner wall of the housing. This utility model breaks up "oil-encapsulated gas" micro-clusters through a dispersing plate to achieve initial gas release. An arc-shaped permeation plate extends the contact time to capture residual small bubbles. A stirring rod accelerates the conversion of dissolved gas and promotes bubble aggregation, achieving full-dimensional removal from macroscopic bubbles to microscopic dissolved gas. Finally, pure, bubble-free standard oil is output from the oil outlet pipe, ensuring that the analyzer detects the true state of the "oil-water" two-phase system. This solves the core problem of gas interference affecting calibration accuracy, provides a reliable standard reference sample for the analyzer, and ensures the accuracy and authenticity of the calibration results.

Description

Technical Field

[0001] This utility model relates to the field of petroleum testing technology, and in particular to a calibration device based on a petroleum moisture content tester. Background Technology

[0002] In the entire oil extraction, gathering, transportation, and refining industry chain, oil water content refers to the ratio of the volume of associated water in oil to the volume of oil-water mixture. It is a core indicator for measuring crude oil quality, calculating extraction efficiency, and optimizing production processes. Its detection accuracy directly affects the fairness of crude oil trade settlement and the scientific nature of production decisions.

[0003] However, standard oil used for calibration is prone to mixing with air or dissolved gas during storage and transportation, forming "oil-in-gas" microclusters or free bubbles. These gases not only change key physical parameters of the oil such as dielectric constant and density, but also interfere with the sensor signal of the tester, ultimately causing the test results to deviate from the true water content. This makes it impossible to provide a reliable calibration reference for the tester. Furthermore, traditional gas-liquid separation methods (such as static sedimentation and simple filtration) can only remove macroscopic bubbles and have limited effectiveness in removing microscopic dissolved gas and small "oil-in-gas" microclusters, making it difficult to meet the requirements of high-precision calibration. Based on this, a calibration device based on a petroleum water content tester is proposed for improvement. Utility Model Content

[0004] In view of the fact that the existing standard calibration oil cannot provide a reliable calibration reference for the test instrument due to gas mixing during storage and transportation, and that traditional gas-liquid separation methods cannot meet the requirements of high-precision calibration, this utility model is proposed.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a calibration device based on a petroleum water content tester, including a housing, the housing including a pressure control mechanism for pressure control and a gas-liquid separation mechanism for gas-liquid separation, an oil inlet pipe is fixedly sleeved on one side of the top of the housing, a support base is fixedly connected to one side of the inner wall of the housing, a fixed cylinder is fixedly connected to the top of the support base, and the inside of the oil inlet pipe is connected to the inside of the fixed cylinder; A separation cylinder is provided on the other side of the inner wall of the box. An L-shaped tube is fixedly sleeved at the top of the separation cylinder. An arc-shaped permeation plate is fixedly connected to the middle of the inner wall of the separation cylinder. An impeller is provided on the inner wall of the outlet end of the L-shaped tube. A transmission rod is fixedly sleeved inside the impeller. Several dispersing plates are fixedly connected to the upper surface of the transmission rod. Several stirring rods are fixedly connected to the bottom surface of the transmission rod.

[0006] As a preferred embodiment, an air outlet pipe is fixedly sleeved on one side of the top of the separator cylinder. A sliding groove is symmetrically opened on the top of the air outlet pipe. An annular plate is fixedly connected to the inner wall of the top of the air outlet pipe. A second spring is movably connected to the top of the annular plate. A sealing plate is fixedly connected to the top of the second spring. A limiting rod is symmetrically provided at the bottom of the sealing plate. The limiting rod is slidably connected to the inner wall of the sliding groove. An oil outlet pipe is fixedly sleeved on the bottom of one side of the separator cylinder.

[0007] As a preferred embodiment, the support base is provided with an inductive switch at its top, the inlet end of the L-shaped tube is connected to the inside of the fixed cylinder, a control valve is installed on the L-shaped tube, a piston plate is slidably connected to the upper part of the inner wall of the fixed cylinder, and an adjusting plate is slidably connected to the lower part of the inner wall of the fixed cylinder.

[0008] As a preferred embodiment, the piston plate is provided with symmetrical sliding columns at its bottom end, the bottom end of the sliding columns extends to the outside of the fixed cylinder and is fixedly connected to the same trigger plate, and the trigger plate is located above the inductive switch.

[0009] As a preferred embodiment, a first spring is sleeved on the surface of the sliding column, and the two ends of the first spring are respectively connected to the bottom end of the piston plate and the top end of the adjusting plate.

[0010] As a preferred embodiment, a threaded post is rotatably connected to the center of the bottom end of the adjusting plate, the threaded post is threadedly connected to the bottom wall of the fixed cylinder, and a throttle handle is fixedly connected to the bottom end of the threaded post.

[0011] As a preferred embodiment, the bottom end of the adjusting plate is symmetrically provided with guide rods, and the guide rods are slidably connected to the bottom wall of the fixed cylinder.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects: 1. This utility model breaks down "oil-encapsulated gas" micro-clusters through a dispersing plate to achieve initial gas release. It extends the contact time through an arc-shaped permeation plate to capture residual small bubbles. It accelerates the conversion of dissolved gas and promotes bubble aggregation through a stirring rod, achieving full-dimensional removal from macroscopic bubbles to microscopic dissolved gas. Finally, it outputs pure, bubble-free standard oil from the oil outlet pipe, enabling the tester to detect the true state of the "oil-water" two-phase system. This solves the core problem of gas interference in calibration accuracy, provides a reliable standard reference sample for the tester, and ensures that the calibration results are true and accurate.

[0013] 2. This utility model, through the setting of a pressure control mechanism, can stabilize the oil pressure at a preset calibration standard value, allowing the oil to accumulate in the fixed cylinder to the set pressure. By controlling the pressure threshold, the oil is fed in an orderly, controllable, quantitative and constant pressure manner, forming a pressure buffer. This makes the flow rate and pressure of the oil entering the separation cylinder more stable, avoiding the disruption of the gas-liquid balance environment in the separation cylinder due to fluctuations in the feed pressure or disordered feeding, and ensuring the stability of the separation process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 for Figure 2 A magnified structural diagram at point B in the middle.

[0015] Explanation of reference numerals in the attached figures: 1. Housing; 11. Oil inlet pipe; 2. Pressure control mechanism; 21. Support base; 22. Fixed cylinder; 23. Piston plate; 24. Adjusting plate; 25. Sliding column; 26. Trigger plate; 27. First spring; 28. Threaded column; 29. ​​Guide rod; 210. Throttle; 3. Gas-liquid separation mechanism; 31. Separation cylinder; 32. Arc-shaped permeation plate; 33. Impeller; 34. Transmission rod; 35. Dispersing plate; 36. Stirring rod; 37. Gas outlet pipe; 38. Slide groove; 39. Annular plate; 310. Second spring; 311. Sealing plate; 312. Limiting rod; 313. Oil outlet pipe; 4. Inductive switch; 41. Control valve; 5. L-shaped pipe. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Reference Figures 1-4 This is the first embodiment of the present invention, which provides a calibration device based on a petroleum water content tester, including a housing 1. The housing 1 includes a pressure control mechanism 2 for pressure control and a gas-liquid separation mechanism 3 for gas-liquid separation. An oil inlet pipe 11 is fixedly sleeved on one side of the top of the housing 1, and a support base 21 is fixedly connected to one side of the inner wall of the housing 1. A fixed cylinder 22 is fixedly connected to the top of the support base 21, and the inside of the oil inlet pipe 11 is connected to the inside of the fixed cylinder 22. On the other side of the inner wall of the box 1, there is a separation cylinder 31. An L-shaped tube 5 is fixedly sleeved at the top of the separation cylinder 31. An arc-shaped permeation plate 32 is fixedly connected to the middle of the inner wall of the separation cylinder 31. An impeller 33 is provided on the inner wall of the outlet end of the L-shaped tube 5. A transmission rod 34 is fixedly sleeved inside the impeller 33. Several dispersing plates 35 are fixedly connected to the upper surface of the transmission rod 34. Several stirring rods 36 are fixedly connected to the bottom surface of the transmission rod 34. An air outlet pipe 37 is fixedly sleeved on one side of the top of the separator cylinder 31. A sliding groove 38 is symmetrically opened on the top of the air outlet pipe 37. An annular plate 39 is fixedly connected to the inner wall of the top of the air outlet pipe 37. A second spring 310 is movably connected to the top of the annular plate 39. A sealing plate 311 is fixedly connected to the top of the second spring 310. A limiting rod 312 is symmetrically provided at the bottom of the sealing plate 311. The limiting rod 312 is slidably connected to the inner wall of the sliding groove 38. An oil outlet pipe 313 is fixedly sleeved on one side of the bottom of the separator cylinder 31.

[0018] Specifically, when the oil under stable pressure flows into the separator cylinder 31 through the L-shaped pipe 5, the oil will impact the impeller 33 on the inner wall of the outlet end of the L-shaped pipe 5, causing the impeller 33 to rotate, and the impeller 33 will drive the transmission rod 34 to rotate. The several dispersing plates 35 on the upper part of the transmission rod 34 rotate accordingly, dispersing the oil flowing into the separation cylinder 31 into fine droplets. This can break the "oil-encapsulated gas" micro-clusters that have formed in the oil, exposing the gas bubbles in the gas phase space inside the separation cylinder 31, increasing the contact area between the oil and the gas, and allowing the gas to escape from the oil quickly. The oil, broken into tiny droplets, falls onto the arc-shaped permeation plate 32, where it is briefly retained and slowly permeates, significantly extending the contact time between the crude oil and the gas phase. This allows residual air bubbles that might otherwise flow rapidly into the bottom of the cylinder with the oil to have more time to float to the surface and precipitate. At the same time, several stirring rods 36 at the bottom of the transmission rod 34 rotate to stir the oil in the lower part of the separation cylinder 31, break the static state of the crude oil, accelerate the conversion of dissolved gas in the crude oil into free gas, promote the formation of larger bubbles from the precipitated tiny bubbles, increase the speed at which the bubbles rise, and finally quickly gather at the top of the separation cylinder 31. The escaping gas gathers upward at the top of the separator 31. As the gas volume increases, the gas pressure gradually increases. When the pressure exceeds the elastic force of the second spring 310, it pushes the sealing plate 311 at the top of the outlet pipe 37 to move upward. The sealing plate 311 stretches the second spring 310 on one hand and slides the limit rod 312 along the slide groove 38 on the other hand to prevent the sealing plate 311 from shifting. Finally, the sealing plate 311 is separated from the inner wall of the outlet pipe 37, and the gas is discharged outside the device through the outlet pipe 37. The oil outlet pipe 313 is used to transport the standard oil without gas interference temporarily stored in the lower part of the separator 31 to the petroleum water content tester to be calibrated for testing, thereby completing the calibration and correction of its own accuracy. This design breaks down "oil-encapsulated gas" micro-clusters using a dispersing plate 35 to achieve initial gas release. An arc-shaped permeation plate 32 extends the contact time to capture residual small bubbles. A stirring rod 36 accelerates dissolved gas conversion and promotes bubble aggregation, achieving comprehensive removal from macroscopic bubbles to microscopic dissolved gas. Finally, pure, bubble-free standard oil is output from the oil outlet pipe 313, ensuring the tester detects the true state of the "oil-water" two-phase system. This solves the core problem of gas interference in calibration accuracy, providing a reliable standard reference sample for the tester and ensuring accurate and reliable calibration results.

[0019] Reference Figures 1-4 This is the second embodiment of the present utility model. The difference between this embodiment and the first embodiment is that: the top of the support base 21 is provided with an induction switch 4, the inlet end of the L-shaped tube 5 is connected to the inside of the fixed cylinder 22, a control valve 41 is installed on the L-shaped tube 5, a piston plate 23 is slidably connected to the upper part of the inner wall of the fixed cylinder 22, and an adjustment plate 24 is slidably connected to the lower part of the inner wall of the fixed cylinder 22. The piston plate 23 is symmetrically provided with sliding columns 25 at the bottom end. The bottom end of the sliding column 25 extends to the outside of the fixed cylinder 22 and is fixedly connected to the same trigger plate 26. The trigger plate 26 is located above the induction switch 4. A first spring 27 is sleeved on the surface of the sliding column 25, and the two ends of the first spring 27 are respectively connected to the bottom end of the piston plate 23 and the top end of the adjusting plate 24; A threaded post 28 is rotatably connected to the center of the bottom end of the adjusting plate 24. The threaded post 28 is threadedly connected to the bottom wall of the fixed cylinder 22. A handle 210 is fixedly connected to the bottom end of the threaded post 28. The bottom end of the adjusting plate 24 is symmetrically provided with guide rods 29, which are slidably connected to the bottom wall of the fixed cylinder 22.

[0020] During use, the operator turns the handle 210, which drives the threaded column 28 to rotate. When the handle 210 rotates, it will drive the adjusting plate 24 to slide up and down along the inner wall of the fixed cylinder 22. The guide rod 29 can prevent the adjusting plate 24 from moving until the adjusting plate 24 moves to the target height, thus completing the initial pressure threshold setting. The oil to be calibrated enters the interior of the fixed cylinder 22 through the oil inlet pipe 11, exerting downward pressure on the piston plate 23 and pushing the piston plate 23 to slide downward along the inner wall of the fixed cylinder 22. The first spring 27 is compressed due to the downward movement of the piston plate 23. At the same time, the sliding column 25 moves downward synchronously with the piston plate 23, thereby driving the trigger plate 26 to move closer to the inductive switch 4. When the oil pressure is balanced with the elastic force of the first spring 27, the piston plate 23 stops sliding. At this time, the oil pressure in the fixed cylinder 22 is stabilized at the preset value. The trigger plate 26 contacts the induction switch 4, which in turn causes the induction switch 4 to send a signal to open the control valve 41, so that the oil with stable pressure flows into the separator cylinder 31 through the L-shaped pipe 5. This design, through the setting of pressure control mechanism 2, can stabilize the oil pressure at the preset calibration standard value, allowing the oil to accumulate in the fixed cylinder 22 to the set pressure. By controlling the pressure threshold, the oil is fed in an orderly, controllable, quantitative and constant pressure manner, forming a pressure buffer. This makes the flow and pressure of the oil entering the separation cylinder 31 more stable, avoiding the disruption of the gas-liquid balance environment in the separation cylinder 31 due to feed pressure fluctuations or disordered feeding, and ensuring the stability of the separation process.

[0021] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A calibration device based on a petroleum water cut tester, comprising a box (1), characterized in that: The housing (1) includes a pressure control mechanism (2) for pressure control and a gas-liquid separation mechanism (3) for gas-liquid separation. An oil inlet pipe (11) is fixedly sleeved on one side of the top of the housing (1). A support base (21) is fixedly connected to one side of the inner wall of the housing (1). A fixed cylinder (22) is fixedly connected to the top of the support base (21). The inside of the oil inlet pipe (11) is connected to the inside of the fixed cylinder (22). A separation cylinder (31) is provided on the other side of the inner wall of the box (1). An L-shaped tube (5) is fixedly sleeved at the top of the separation cylinder (31). An arc-shaped permeation plate (32) is fixedly connected to the middle of the inner wall of the separation cylinder (31). An impeller (33) is provided on the inner wall of the outlet end of the L-shaped tube (5). A transmission rod (34) is fixedly sleeved inside the impeller (33). Several dispersing plates (35) are fixedly connected to the upper surface of the transmission rod (34). Several stirring rods (36) are fixedly connected to the bottom surface of the transmission rod (34).

2. The calibration device for a petroleum water cut tester according to claim 1, characterized in that: An air outlet pipe (37) is fixedly sleeved on one side of the top of the separator (31). A sliding groove (38) is symmetrically opened on the top of the air outlet pipe (37). An annular plate (39) is fixedly connected to the inner wall of the top of the air outlet pipe (37). A second spring (310) is movably connected to the top of the annular plate (39). A sealing plate (311) is fixedly connected to the top of the second spring (310). A limiting rod (312) is symmetrically provided at the bottom of the sealing plate (311). The limiting rod (312) is slidably connected to the inner wall of the sliding groove (38). An oil outlet pipe (313) is fixedly sleeved on one side of the bottom of the separator (31).

3. The calibration device for a petroleum water cut tester according to claim 1, wherein: The support base (21) is equipped with an induction switch (4) at the top. The inlet end of the L-shaped tube (5) is connected to the inside of the fixed cylinder (22). A control valve (41) is installed on the L-shaped tube (5). A piston plate (23) is slidably connected to the upper part of the inner wall of the fixed cylinder (22). An adjustment plate (24) is slidably connected to the lower part of the inner wall of the fixed cylinder (22).

4. The calibration device for a petroleum water cut tester according to claim 3, characterized in that: The piston plate (23) is symmetrically provided with sliding columns (25) at the bottom end. The bottom end of the sliding column (25) extends to the outside of the fixed cylinder (22) and is fixedly connected to the same trigger plate (26). The trigger plate (26) is located above the induction switch (4).

5. The calibration device for a petroleum water cut tester according to claim 4, characterized in that: The sliding column (25) is fitted with a first spring (27), and the two ends of the first spring (27) are respectively connected to the bottom end of the piston plate (23) and the top end of the adjusting plate (24).

6. The calibration device for a petroleum water cut tester according to claim 3, characterized in that: The center of the bottom end of the adjusting plate (24) is rotatably connected to a threaded column (28), which is threaded to the bottom wall of the fixed cylinder (22). The bottom end of the threaded column (28) is fixedly connected to a throttle (210).

7. The calibration device for a petroleum water cut tester according to claim 6, characterized in that: The bottom end of the adjusting plate (24) is symmetrically provided with guide rods (29), and the guide rods (29) are slidably connected to the bottom wall of the fixed cylinder (22).

Images