Intelligent petroleum distillation range tester

Abstract

The utility model belongs to the technical field of petrochemical engineering, and particularly relates to an intelligent petroleum distillation range tester which comprises a tester body, a magnetic stirring heating structure is mounted in the tester body, a distillation flask is mounted at the top of the magnetic stirring heating structure, and one side of the distillation flask is communicated with a first condensation pipe. A second condensation pipe is arranged at one end, far away from the distillation flask, of the first condensation pipe, a multi-stage spiral condensation pipe is mounted in the second condensation pipe, one side of the multi-stage spiral condensation pipe is communicated with a connecting pipe, the multi-stage spiral condensation pipe is of a three-section reducing spiral structure, and a circulating water cooling structure is arranged at the bottom of the second condensation pipe. According to the intelligent petroleum distillation range tester, fractions with different boiling points can be preliminarily separated and condensed through the three-section variable-diameter spiral structure, and targeted cooling of the fractions with different boiling points can be achieved through cooperation of the three-section variable-diameter spiral structure and the circulating water cooling structure.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical technology, and in particular to an intelligent petroleum distillation range measuring instrument. Background Technology

[0002] In the petrochemical field, petroleum distillation range determination is a crucial analytical method. Petroleum is not a single substance, but a mixture of various hydrocarbons and other compounds with different boiling points. Distillation range can intuitively show the relationship between the quantity of oil distilled from the initial boiling point to the final boiling point under specific conditions and the corresponding temperature. It covers the initial boiling point and the final boiling point. For gasoline, it also involves items such as 10%, 50%, and 90% distillation temperature, residue, and loss.

[0003] Traditional petroleum distillation range measuring instruments, such as Engler distillation apparatuses, typically employ simple straight-tube structures for their condensers. During petroleum distillation, the limited contact area between the petroleum vapor and the tube wall results in low heat exchange efficiency. This prevents the implementation of differentiated condensation strategies for different petroleum components, such as high-boiling, medium-boiling, and low-boiling points, instead relying on a single condensation method. Consequently, it is difficult to achieve effective separation and condensation of each fraction, severely impacting the accuracy and efficiency of distillation range determination. Therefore, an intelligent petroleum distillation range measuring instrument is urgently needed to address these issues. Utility Model Content

[0004] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0005] Specifically, the technical problem to be solved by this utility model is to provide an intelligent petroleum distillation range measuring instrument to solve the technical problem that it is difficult to achieve effective separation and condensation of each fraction using the current straight tube condensation method.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A smart petroleum distillation range analyzer includes an analyzer with a magnetic stirring and heating structure installed inside. A distillation flask is mounted on top of the magnetic stirring and heating structure. A first condenser tube is connected to one side of the distillation flask. A second condenser tube is located at the end of the first condenser tube away from the distillation flask. A multi-stage spiral condenser tube is installed inside the second condenser tube. A connecting pipe is connected to one side of the multi-stage spiral condenser tube, and the connecting pipe is connected to the first condenser tube. The first condenser tube and the multi-stage spiral condenser tube are connected through the connecting pipe. A pipe is connected to the end of the multi-stage spiral condenser tube away from the connecting pipe. The end of the pipe away from the multi-stage spiral condenser tube extends to the outside of the second condenser tube. The multi-stage spiral condenser tube has a three-section variable diameter spiral structure. A collection bottle is located on the side of the pipe away from the multi-stage spiral condenser tube, and the collection bottle is located on the side away from the magnetic stirring and heating structure. A circulating water cooling structure is located at the bottom of the second condenser tube.

[0008] As an improved technical solution, the first condenser, the second condenser, and the multi-stage spiral condenser are all inclined.

[0009] As an improved technical solution, the circulating water cooling structure includes an inlet pipe and an outlet pipe located on both sides thereon. The other ends of the inlet pipe and the outlet pipe are connected to the second condenser pipe, and the two are located at the two ends of the second condenser pipe respectively. A pump body is installed on the inlet pipe, and a water pump mounting bracket is installed on the outer surface of the pump body. The other end of the water pump mounting bracket is fixedly connected to the circulating water cooling structure.

[0010] As an improved technical solution, the distillation flask is made of quartz glass, and a spiral guide groove is formed on the inner side of the distillation flask. The surface of the spiral guide groove is coated with a silicon nitride ceramic coating. A piston is installed on the top of the distillation flask, and a sensing probe is provided on the top of the piston.

[0011] As an improved technical solution, a first fixing block and a second fixing block are installed on the outer surface of the second condenser tube. The first fixing block and the second fixing block correspond to each other. One end of the first fixing block and the second fixing block has a connecting rod. The ends of the two sets of connecting rods away from the first fixing block and the second fixing block are fixedly connected to a connecting plate. The connecting plate is located inside the measuring instrument, and the two are connected by bolt threads.

[0012] As an improved technical solution, the measuring instrument has an internal mounting frame located on top of the distillation flask. The surface of the mounting frame is equipped with an explosion-proof exhaust fan, which is connected to the mounting frame via a connecting bolt.

[0013] As an improved technical solution, the measuring instrument is equipped with an intelligent control module, which is located on the top of the collection bottle.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are:

[0015] 1. This utility model features a three-section variable diameter spiral structure that can perform preliminary separation and condensation of fractions with different boiling points. When used in conjunction with a circulating water cooling structure, it can achieve targeted cooling of fractions with different boiling points.

[0016] 2. In this utility model, the three-section variable diameter spiral structure of the condenser tube extends the flow path of petroleum vapor. The variable diameter design allows the vapor to fully contact the tube wall, increasing the heat exchange area and time, which can improve the cooling effect, reduce the escape of uncondensed oil and gas, and thus improve the accuracy of distillation range measurement.

[0017] 3. In this utility model, the material of the ordinary glass distillation flask is changed to quartz glass, which can improve its high temperature resistance and corrosion resistance; at the same time, a spiral guide groove is set on the inner wall of the flask to guide the oil to flow evenly and reduce local overheating; the surface of the guide groove is coated with a silicon nitride ceramic coating to reduce the adhesion of residues. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of the intelligent petroleum distillation range measuring instrument of this utility model.

[0020] Figure 2 This is a cross-sectional structural schematic diagram of the intelligent petroleum distillation range measuring instrument of this utility model.

[0021] Figure 3 This is a schematic diagram of the circulating water cooling structure and related structures of the second condenser tube in the intelligent petroleum distillation range measuring instrument of this utility model.

[0022] Figure 4 This is a cross-sectional view of the distillation flask and the second condenser tube of the intelligent petroleum distillation range measuring instrument of this utility model.

[0023] Figure 5 This utility model relates to an intelligent petroleum distillation range measuring instrument. Figure 4 A magnified structural diagram of part A.

[0024] Figure 6 This is a schematic diagram of the explosion-proof exhaust fan and the exploded structure of the intelligent petroleum distillation range measuring instrument of this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Measuring instrument; 2. Magnetic stirring and heating structure; 3. Distillation flask; 4. First condenser; 5. Second condenser; 6. Multi-stage spiral condenser; 7. Connecting pipe; 8. Liquid outlet pipe; 9. Collection bottle; 10. Circulating water cooling structure; 11. Water inlet pipe; 12. Water outlet pipe; 13. Pump body; 14. Water pump mounting bracket; 15. Spiral guide groove; 16. Piston; 17. Induction probe; 18. First fixing block; 19. Second fixing block; 20. Connecting rod; 21. Connecting plate; 22. Bolt; 23. Mounting bracket; 24. Explosion-proof exhaust fan; 25. Connecting bolt; 26. Intelligent control module. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0030] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] like Figures 1 to 6As shown in the figure, this embodiment provides an intelligent petroleum distillation range measuring instrument. This intelligent petroleum distillation range measuring instrument includes a measuring instrument 1. A magnetic stirring and heating structure 2 is installed inside the measuring instrument 1. A distillation flask 3 is installed on the top of the magnetic stirring and heating structure 2. A first condenser tube 4 is connected to one side of the distillation flask 3. A second condenser tube 5 is provided at the end of the first condenser tube 4 away from the distillation flask 3. A multi-stage spiral condenser tube 6 is installed inside the second condenser tube 5. A connecting pipe 7 is connected to one side of the multi-stage spiral condenser tube 6. The connecting pipe 7 is connected to the first condenser tube 4. The first condenser tube 4 and the multi-stage spiral condenser tube 6 are connected through the connecting pipe 7.

[0032] like Figure 2 As shown, the magnetic stirrer in the magnetic stirring heating structure 2 consists of a rotatable permanent magnet or electromagnet and is located below the distillation flask 3. A magnetic stir bar is placed inside the distillation flask 3. When the magnet of the magnetic stirrer rotates, it generates a rotating magnetic field. Under the action of this rotating magnetic field, the magnetic stir bar is driven by the magnetic force and rotates accordingly. As the stir bar rotates in the petroleum sample, it will drive the surrounding petroleum liquid to flow, thereby achieving the stirring effect. This stirring method can make the petroleum sample heat more evenly during the heating process, avoid the occurrence of local overheating, and also help promote the mixing and transfer of different components in the petroleum, making the distillation range determination results more accurate and reliable.

[0033] The heating device generally uses an electric heating plate. Power is supplied to the heating plate, and the current generates heat through the resistor. The heat is transferred to the distillation flask 3 placed on it by thermal conduction, thereby raising the temperature of the petroleum sample inside the distillation flask 3. During the heating process, the temperature of the petroleum sample is monitored in real time by a temperature sensor, and the temperature signal is fed back to the control system. The control system automatically adjusts the heating power according to the set heating rate and target temperature to achieve precise control of the heating process of the petroleum sample, ensuring that the distillation range is determined according to the prescribed heating program to obtain accurate distillation range data.

[0034] The end of the multi-stage spiral condenser 6 furthest from the connecting pipe 7 is connected to a liquid outlet pipe 8. The end of the liquid outlet pipe 8 furthest from the multi-stage spiral condenser 6 extends to the outside of the second condenser 5. The multi-stage spiral condenser 6 is a three-section variable diameter spiral structure, consisting of three pipe sections connected in sequence. The pipe diameter changes from large to medium to small. The initial section, which is connected to the connecting pipe 7, has a larger diameter, providing relatively ample space for the oil and gas to enter, slowing down its flow rate, and facilitating initial heat exchange and initial condensation of high-boiling-point components. The middle section has a moderate diameter, further enhancing the cooling effect. The condensation effect is achieved by targeting medium-boiling-point components. The final section, which is connected to the liquid outlet pipe 8, has the smallest diameter. At this point, the remaining low-boiling-point components condense rapidly. The small diameter improves cooling efficiency and ensures complete liquefaction. Meanwhile, each section of the pipe is spiral-shaped. This spiral design greatly increases the length and surface area of ​​the pipe. The spiral structure significantly extends the flow path of oil and gas in the pipe. Compared with straight pipes, the residence time of oil and gas in the condenser pipe is significantly increased, allowing more time for heat exchange with the pipe wall and improving the adequacy of heat transfer.

[0035] A collection bottle 9 is provided on the side of the liquid outlet pipe 8 away from the multi-stage spiral condenser 6. The collection bottle 9 is located on the side away from the magnetic stirring heating structure 2. A circulating water cooling structure 10 is provided at the bottom of the second condenser 5. The collection bottle 9 is used to collect the condensed liquid.

[0036] The first condenser 4, the second condenser 5, and the multi-stage spiral condenser 6 are all inclined. The inclined setting allows the condensed liquid to flow smoothly along the pipe wall to the outlet pipe 8 under the action of gravity, avoiding the accumulation of condensate in the pipe, ensuring the continuous and stable operation of the condensation process, and preventing excessive condensate from affecting the condensation efficiency of subsequent oil and gas.

[0037] The circulating water cooling structure 10 includes an inlet pipe 11 and an outlet pipe 12 located on both sides. The other ends of both the inlet pipe 11 and the outlet pipe 12 are connected to the second condenser pipe 5, and they are located at opposite ends of the second condenser pipe 5 to achieve circulating water cooling. Figure 3 As shown, the surface of the circulating water cooling structure 10 is provided with a water level observation groove for easy observation of the water level;

[0038] A pump body 13 is installed on the water inlet pipe 11. A water pump mounting bracket 14 is installed on the outer surface of the pump body 13. The other end of the water pump mounting bracket 14 is fixedly connected to the circulating water cooling structure 10, which can fix the pump body 13.

[0039] The distillation flask 3 is made of quartz glass. A spiral guide groove 15 is formed on the inner side of the distillation flask 3. The surface of the spiral guide groove 15 is coated with a silicon nitride ceramic coating. A piston 16 is installed on the top of the distillation flask 3. A sensing probe 17 is installed on the top of the piston 16. The sensing probe 17 can detect relevant parameters inside the distillation flask 3 in real time. By acquiring these data, the reaction situation inside the distillation flask 3 can be intuitively understood, and the distillation conditions can be adjusted in time to ensure the stable progress of the distillation process and improve the accuracy and safety of the distillation range determination. The spiral guide groove 15 is used to guide the uniform flow of oil and reduce local overheating. At the same time, the silicon nitride ceramic coating on its surface can reduce the adhesion of residues. The distillation flask 3 made of quartz glass can improve its high temperature resistance and corrosion resistance.

[0040] The outer surface of the second condenser 5 is equipped with a first fixing block 18 and a second fixing block 19, which correspond to each other. One end of the first fixing block 18 and the second fixing block 19 is equipped with a connecting rod 20. The ends of the two sets of connecting rods 20 away from the first fixing block 18 and the second fixing block 19 are fixedly connected to a connecting plate 21. The connecting plate 21 is located inside the measuring instrument 1, and the two are connected by bolts 22, which can provide support for the second condenser 5 and ensure its stability during use.

[0041] The measuring instrument 1 has a mounting bracket 23 inside, which is located on the top of the distillation flask 3. The surface of the mounting bracket 23 is equipped with an explosion-proof exhaust fan 24. The explosion-proof exhaust fan 24 is connected to the mounting bracket 23 by a connecting bolt 25. The connecting bolt 25 is a type of plug or bolt, which facilitates the disassembly and replacement of the explosion-proof exhaust fan 24. The explosion-proof exhaust fan 24 is also used to control the temperature.

[0042] The measuring instrument 1 is equipped with an intelligent control module 26, which is located on the top of the collection bottle 9. The intelligent control module 26 consists of an integrated temperature sensor, a photoelectric liquid level sensor, and a main control chip. The integrated temperature sensor and the photoelectric liquid level sensor can collect the temperature and distillate volume in real time. The main control chip automatically determines the final boiling point through an algorithm and generates a distillation curve. It also has a built-in over-temperature alarm and automatic power-off protection circuit.

[0043] In use, petroleum is poured into distillation flask 3, and a magnetic stir bar is placed inside. Then, piston 16 is inserted into distillation flask 3, and the magnetic stirring and heating structure 2 is activated to heat the petroleum sample in distillation flask 3. During heating, the temperature of the petroleum sample is monitored in real time by a temperature sensor, and the temperature signal is fed back to the control system. The control system automatically adjusts the heating power according to the set heating rate and target temperature to achieve precise control of the petroleum sample heating process, ensuring that the distillation range determination is carried out according to the prescribed heating program to obtain accurate distillation range data. Subsequently, the magnetic stir bar rotates under the influence of the rotating magnetic field, driving the surrounding petroleum liquid to flow, thus achieving a stirring effect. This stirring method allows the petroleum sample to be heated more evenly during the heating process, avoiding localized overheating. It also helps promote the mixing and transfer of different components in the petroleum, making the distillation range determination results more accurate and reliable. This method improves the heating efficiency inside distillation flask 3 and reduces the possibility of boiling over. Simultaneously, the explosion-proof exhaust fan 24 can be activated to control the temperature.

[0044] Afterwards, the high-temperature oil and gas enter the condenser from the distillation flask 3, and then flow sequentially through the spiral sections of the multi-stage spiral condenser 6 with decreasing diameters. In the upper section with a large diameter spiral, the high-temperature oil and gas are initially cooled, and the high-boiling-point components are preferentially liquefied due to their higher boiling points. In the middle section with a medium diameter spiral, some medium-boiling-point components are condensed. The spiral diameter variation design promotes turbulence in the oil and gas, effectively breaking the laminar boundary layer and enhancing the heat exchange effect. When entering the lower section with a small diameter spiral, some low-boiling-point components are completely condensed. The small-diameter spiral structure further improves the cooling efficiency.

[0045] In addition, the spiral structure prolongs the residence time of oil and gas in the pipe, while the centrifugal force generated causes the oil and gas to flow along the wall, strengthening the contact with the cooling wall surface and making heat exchange more complete.

[0046] Simultaneously, the pump body 13 is activated to transport the water source in the circulating water cooling structure 10 to the second condenser tube 5 through the inlet pipe 11, so that the water source is located inside the second condenser tube 5 and outside the multi-stage spiral condenser tube 6 to achieve the purpose of water cooling. Afterwards, the water source will return to the circulating water cooling structure 10 through the outlet pipe 12 to achieve the purpose of circulating cooling. The circulating water flows in the second condenser tube 5 and surrounds the multi-stage spiral condenser tube 6, which can continuously remove heat. Compared with the one-time cooling method, it can ensure a stable and efficient cooling environment, allowing oil and gas to condense more fully. At the same time, the water source is recycled, reducing the waste of water resources and reducing the demand for a large amount of external cooling water, thus saving energy and costs to a certain extent.

[0047] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. An intelligent petroleum distillation range tester characterized by: Including the determination appearance (1), the inside installation of determination appearance (1) magnetic force stirring heating structure (2), the top of magnetic force stirring heating structure (2) installs the retort (3), one side of retort (3) is connected with first condenser (4), the one end away from retort (3) of first condenser (4) is equipped with second condenser (5), the inside installation of second condenser (5) multi-stage spiral condenser (6), one side of multi-stage spiral condenser (6) is connected with connecting pipe (7), connecting pipe (7) is communicated with first condenser (4), first condenser (4) and multi-stage spiral condenser (6) are communicated through connecting pipe (7), The one end away from connecting pipe (7) of multi-stage spiral condenser (6) is connected with liquid outlet pipe (8), the one end away from multi-stage spiral condenser (6) of liquid outlet pipe (8) extends to the outside of second condenser (5), the multi-stage spiral condenser (6) is three variable diameter spiral structures; The one side away from multi-stage spiral condenser (6) of liquid outlet pipe (8) is equipped with collection bottle (9), the collection bottle (9) is located at the one side away from magnetic force stirring heating structure (2), the bottom of second condenser (5) is equipped with circulating water cooling structure (10).

2. The intelligent petroleum distillation range tester according to claim 1, characterized in that: The first condenser (4), second condenser (5) and multi-stage spiral condenser (6) are all inclined.

3. The intelligent petroleum distillate range tester of claim 2, wherein: The circulating water cooling structure (10) includes water inlet pipe (11) and water outlet pipe (12) on both sides, the other end of the water inlet pipe (11) and the water outlet pipe (12) are communicated with the second condenser (5), and they are located at both ends of the second condenser (5) respectively; The pump body (13) is installed on the water inlet pipe (11), the water pump mounting bracket (14) is installed on the outer surface of the pump body (13), and the other end of the water pump mounting bracket (14) is fixedly connected with the circulating water cooling structure (10).

4. The intelligent petroleum distillate range tester of claim 3, wherein: The retort (3) is made of quartz glass material, a spiral flow guide groove (15) is formed in the inner side of the retort (3), the surface of the spiral flow guide groove (15) is coated with a silicon nitride ceramic coating, a piston (16) is installed on the top of the retort (3), and an induction probe (17) is arranged on the top of the piston (16).

5. The intelligent petroleum distillate range tester of claim 4, wherein: First and second fixed blocks (18) and (19) are installed on the outer surface of the second condenser (5), the first and second fixed blocks (18) and (19) correspond to each other, one end of each of the first and second fixed blocks (18) and (19) is provided with a connecting rod (20), one end of each of the two connecting rods (20) away from the first and second fixed blocks (18) and (19) is fixedly connected with a connecting plate (21), the connecting plate (21) is located on the inner side of the determination appearance (1), and the two connecting plates (21) are threadedly connected through bolts (22).

6. The intelligent petroleum distillate range tester of claim 5, wherein: The inside of the determination appearance (1) is provided with a mounting bracket (23), the mounting bracket (23) is located on the top of the retort (3), the surface of the mounting bracket (23) is provided with an explosion-proof exhaust fan (24), and the explosion-proof exhaust fan (24) is connected with the mounting bracket (23) through a connecting bolt (25).

7. The intelligent petroleum distillate range tester of claim 1, wherein: Inside the said apparatus (1) a smart control module (26) is installed, which is located on the top of the collection bottle (9).

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