Automatic sampling device of reaction kettle

Abstract

The utility model relates to the technical field of sampling devices, in particular to an automatic sampling device of a reaction kettle. Comprising a reaction kettle, a sampling window is arranged on the reaction kettle, a movable steel pipe is arranged in the sampling window, the movable steel pipe is communicated with a main valve, the main valve is connected with a first reducing three-way pipe, one end of the first reducing three-way pipe is connected with a sampling valve, and the other end of the first reducing three-way pipe is connected with a second reducing three-way pipe; one end of the second reducing three-way pipe is connected with a vacuum valve, and the other end of the second reducing three-way pipe is connected with a third reducing three-way pipe; one end of the third reducing three-way pipe is connected with a nitrogen valve, the other end of the third reducing three-way pipe is connected with a balance valve, the balance valve is connected with a fourth reducing three-way pipe, the small-diameter end of the fourth reducing three-way pipe is connected to the sampling valve, and the large-diameter end of the fourth reducing three-way pipe is connected with a discharge port. According to the reaction kettle, the reaction process in the kettle is not influenced, representative reaction materials can be accurately monitored and extracted, the safety and the production efficiency are improved, and the reaction kettle is simple and compact in structure and convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, and in particular to an automatic sampling device for a reaction vessel. Background Technology

[0002] The chemical industry is an important part of the industrial sector. In order to ensure product quality stability and production process safety during chemical reactions, it is usually necessary to regularly sample and analyze the materials in the reaction vessel and monitor the reaction process.

[0003] Currently, large chemical plants employ numerous automated online monitoring devices to oversee reaction processes, significantly improving sampling accuracy and safety. However, in fine chemical production, manual sampling is still the primary method for monitoring reaction processes. This requires personnel to wear full-body protective gear (face, hands, and even head), open valves, and take samples. This method is not only cumbersome and inefficient but also susceptible to environmental factors. It's difficult to control the sampling location, leading to sample non-representativeness; sample spillage is common, resulting in material waste and contamination of the work environment with toxic, harmful, or odorless substances. Furthermore, a large amount of sample adheres to the sampling bottle surface, especially under high temperature and pressure conditions. Manual sampling can also cause color changes and loss of volatile substances, affecting the final analytical results. Additionally, odors may escape from the reaction vessel during sampling; if toxic or harmful, this can endanger the health and even lives of sampling personnel. Sampling equipment also requires separate handling, further complicating the process for producers. Utility Model Content

[0004] To ensure the accuracy and safety of sampling inside the reactor and improve operational efficiency and quality, this application provides an automatic sampling device for reactors. While ensuring that the reaction process inside the reactor is not affected, it can accurately monitor and extract representative reaction materials, thereby improving safety and production efficiency. The device is also simple, compact in structure, and easy to operate.

[0005] This application provides an automatic sampling device for a reaction vessel, which adopts the following technical solution:

[0006] An automatic sampling device for a reaction vessel includes a reaction vessel with a sampling window. A movable steel pipe is installed inside the sampling window and connected to a main valve. The main valve is connected to a first reducing tee. One end of the first reducing tee is connected to a sampling valve, and the other end is connected to a second reducing tee. One end of the second reducing tee is connected to a vacuum valve, and the other end is connected to a third reducing tee. One end of the third reducing tee is connected to a nitrogen valve, and the other end is connected to a balancing valve. The balancing valve is connected to a fourth reducing tee, with the smaller diameter end of the fourth reducing tee connected to the sampling valve and the larger diameter end connected to a discharge port.

[0007] By adopting the above technical solution, a sampling window is set up so that the movable steel pipe can be inserted into the reactor. The vacuum valve is then connected by connecting the main valve and the first and second reducing tee pipes. The reactants are extracted by vacuum extraction. After the vacuum valve and the main valve are closed, the extracted reactants are purged with nitrogen and collected directly at the outlet through the fourth reducing tee pipe. The sampling valve is connected to the smaller diameter end of the pipe. This design improves nitrogen purging efficiency, preventing residual reactants in valves or pipelines from affecting experimental results. It also ensures the automatic sampling device prevents materials from contacting air, guaranteeing that materials with high color requirements are protected from oxidation and contamination. The device features a simple and rational design with excellent sealing, preventing exhaust gas leakage and significantly improving the on-site operating environment while avoiding harm to personnel. During sampling, nitrogen purging allows for direct collection of reactants, reducing the need for workers to wear protective gear, increasing work efficiency and sampling safety. Furthermore, it enables automated control of the sampling process, reducing labor intensity.

[0008] Preferably, the smaller diameter end of the third tee pipe is connected to the balance valve; the smaller diameter end of the second tee pipe is connected to the vacuum valve.

[0009] By adopting the above technical solution, the vacuum valve is connected to the smaller diameter side of the second three-way pipe, which increases the vacuuming efficiency and improves the sample extraction efficiency. The balance valve is connected to the smaller diameter side of the third three-way pipe, which further improves the nitrogen purging efficiency and improves the sample extraction efficiency. It can also prevent the generation of negative pressure in the reactor, which would cause gaseous reactants to be ejected and affect the reaction process of the reactants.

[0010] In one specific implementation, a through-viewing mirror is connected between the larger diameter pipes of the first tee pipe and the second tee pipe.

[0011] A gravity sensor is installed on the through-view mirror.

[0012] By adopting the above technical solution, a straight-through sight glass is installed between the three-way pipes with a large diameter. On the one hand, the large diameter allows for faster extraction of test samples. On the other hand, the straight-through sight glass allows for a more intuitive presentation of the sampling results. Operators can accurately obtain sampling results and determine whether the material reaction is normal simply by observing whether there is any material residue through the observation section of the straight-through sight glass. The installation of a gravity sensor allows for the extraction of a fixed amount of reaction material for testing, avoiding waste of sample volume and reducing the experience requirements for operators, greatly improving the convenience of sampling operations and the accuracy of sampling feedback information.

[0013] In one specific implementation, the nitrogen valve is connected to a nitrogen check valve via a pipeline, and the nitrogen check valve is connected to a nitrogen source.

[0014] By adopting the above technical solution, and by setting a nitrogen check valve to prevent gas backflow into the reactor during the nitrogen purging process in a high-temperature and high-pressure environment, the safety of the automatic sampling device of the reactor is improved.

[0015] In one specific implementation, the vacuum valve is connected to a vacuum check valve via a pipeline, and the vacuum check valve is connected to a vacuum device.

[0016] By adopting the above technical solution, the vacuum check valve allows the fluid in the pipeline to flow in the normal direction and prevents the fluid from flowing in the opposite direction, which also helps to maintain the vacuum state and prevents air from entering.

[0017] In one specific implementation, the movable steel pipe is provided with a pipe flange, which is connected to the sampling window.

[0018] By adopting the above technical solution and setting a flange connection to the sampling window, the movable steel pipe can be disassembled, making it easy to replace or repair the sampling components, making the sampling process more flexible and further extending the service life of the automatic sampling device for the reactor.

[0019] In one specific implementation scheme, a connecting rod is provided on the movable steel pipe, a tray is provided on the connecting rod, a sampling bottle is fixedly connected to the tray, and the sampling bottle is located directly below the discharge port.

[0020] By adopting the above technical solution, the material blown out of the outlet automatically enters the sampling bottle through the tray and sampling bottle set by the connecting rod, freeing workers from the tedious process of wearing protective equipment and avoiding harm to the workers' health.

[0021] In one specific implementation, several temperature sensors are equidistantly arranged on the side wall of the reactor.

[0022] The movable steel pipe includes two sections of steel pipe connected to each other by threads, and a sealing ring is provided at the threaded connection of the two sections of steel pipe.

[0023] By adopting the above technical solution, two steel pipes connected by threads can be inserted into the corresponding temperature zone of the reactor as required to take samples from different locations for testing. The sealing ring at the thread ensures airtightness, preventing exhaust gas from overflowing, greatly improving the on-site operating environment, avoiding the harm to personnel caused by exhaust gas overflow, and improving sampling efficiency.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. By setting a sampling window, a movable steel pipe is inserted into the reactor. The main valve and the first and second reducing tee pipes are connected to the vacuum valve. The reactants are extracted by vacuum. After the vacuum valve and the main valve are closed, the extracted reactants are purged with nitrogen and collected directly at the outlet through the fourth reducing tee pipe. The sampling valve is connected to the smaller diameter end of the pipe. This design improves nitrogen purging efficiency, preventing residual reactants in valves or pipelines from affecting experimental results. It also ensures the automatic sampling device prevents materials from contacting air, guaranteeing that materials with high color requirements are protected from oxidation and contamination. The device features a simple and rational design with excellent sealing, preventing exhaust gas leakage and significantly improving the on-site operating environment while avoiding harm to personnel. During sampling, nitrogen purging allows for direct collection of reactants, reducing the need for workers to wear protective gear, increasing work efficiency and sampling safety. Furthermore, it enables automated control of the sampling process, reducing labor intensity.

[0026] 2. By installing a straight-through sight glass between the three-way pipes with a large diameter, on the one hand, the large diameter allows for faster extraction of the test sample; on the other hand, the straight-through sight glass provides a more intuitive presentation of the sampling results. Operators can accurately obtain sampling results and determine whether the material reaction is normal simply by observing whether there is any material residue through the sight glass. The installation of a gravity sensor allows for the extraction of a fixed amount of reactant material for testing, avoiding sample waste and reducing the experience requirements for operators, greatly improving the convenience of sampling operations and the accuracy of sampling feedback information.

[0027] 3. By setting up movable steel pipes, two sections of steel pipes connected by threads can be extended into the corresponding temperature zones of the reactor as required to take samples from different locations for testing. The sealing rings at the threads ensure airtightness, preventing exhaust gas from overflowing, greatly improving the on-site operating environment, avoiding the harm to personnel caused by exhaust gas overflow, and improving sampling efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0029] Figure 2 This is an enlarged view of part A of the embodiments of this application.

[0030] Figure 3 This is an enlarged view of part B of the embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Reactor; 11. Sampling window; 112. Movable steel pipe; 121. Main valve; 122. First reducing tee; 12. Sampling valve; 13. Second reducing tee; 14. Vacuum valve; 15. Third reducing tee; 151. Nitrogen valve; 16. Balancing valve; 17. Fourth reducing tee; 18. Discharge port; 183. Straight sight glass; 19. Gravity sensor; 20. Nitrogen check valve; 21. Nitrogen source; 22. Vacuum check valve; 23. Vacuum device; 29. ​​Pipe flange; 291. Connecting rod; 30. Tray; 31. Sampling bottle; 32. Temperature sensor; 35. Sealing ring. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0033] This application discloses an automatic sampling device for a reaction vessel.

[0034] Reference Figure 1 and Figure 2 An automatic sampling device for a reaction vessel includes a reaction vessel 1. Three temperature sensors 32 are equidistantly arranged on the side wall of the reaction vessel 1. A sampling window 11 is provided on the reaction vessel 1. A movable steel pipe 112 is connected through a sampling hole in the sampling window 11. A pipe flange 29 is provided on the movable steel pipe 112 and connected to the sampling window 11. A connecting rod 291 perpendicular to the movable steel pipe 112 is also provided on the movable steel pipe 112. A tray 30 is provided on the connecting rod 291, and a sampling bottle 31 is fixed on the tray 30. A main valve 121 is also connected to the movable steel pipe 112. The main valve 121 is connected to a first reducing tee pipe 122 via a steel pipe. The smaller diameter end of the first reducing tee pipe 122 is connected to a sampling valve 12. A straight-through sight glass 183 is connected to the larger diameter port of tube 22. A gravity sensor 19 is installed on the straight-through sight glass 183. The straight-through sight glass 183 is connected to a second reducing tee 13 via a bend. The larger diameter port of the second reducing tee 13 is connected to a third reducing tee 15 with a larger diameter port. The larger diameter port of the third reducing tee 15 is connected in sequence to a nitrogen valve 151, a check valve, and a nitrogen source 21. The smaller diameter port of the third reducing tee 15 is connected to a balancing valve 16. The balancing valve 16 is connected to a fourth reducing tee 17. The smaller diameter port of the fourth reducing tee 17 is connected to a sampling valve 12. The larger diameter port of the fourth reducing tee 17 is connected to a discharge port 18, which is located directly above the sampling bottle 31. The smaller diameter port of the second reducing tee 13 is connected in sequence via a pipeline to a vacuum valve 14, a check valve, and a vacuum device 23.

[0035] Reference Figure 1 and Figure 2The movable steel pipe 112 includes an internally threaded steel pipe and an externally threaded steel pipe that are used in conjunction with each other. The internally threaded steel pipe and the externally threaded steel pipe are used in conjunction with each other through threads, and a sealing ring 35 is provided at the threaded connection.

[0036] When repairing or replacing the cleaning and sampling device, simply loosen the pipe flange 29 connecting the sampling window 11 to remove the movable steel pipe 112. After replacement or repair, simply insert the replaced component through the movable pipe flange 29 and tighten the flange nut.

[0037] The implementation principle of this embodiment is as follows: When using the automatic sampling device of the reactor 1 for sampling, firstly, the temperature sensor 32 on the reactor 1 is used to adjust the movable steel pipe 112 to the position to be sampled via the threaded adjustment. Then, the main valve 121 is opened and the vacuum valve 14 is slowly opened. The material enters the sight glass 183 through the movable steel pipe 112. After the required sampling amount is detected by the gravity sensor 19, the main valve 121 and the vacuum valve 14 are closed. Subsequently, the balance valve 16 and the sampling valve 12 are opened in sequence, and the material smoothly enters the sampling bottle 31. The sampling valve 12 is closed and the nitrogen valve 151 is opened to purge the valves in the pipeline, making the nitrogen purging efficiency higher and avoiding residual reaction material at the valves or pipelines from affecting the experimental results. This also ensures that the automatic sampling device can ensure that the material does not come into contact with air. For materials with high color requirements, it can completely ensure that the product color is not oxidized and contaminated. At the same time, it effectively reduces the overflow of vaporized material. The automatic sampling device of this application has a simple structure, reasonable design, and good airtightness, preventing exhaust gas from overflowing, which greatly improves the on-site operating environment and avoids the harm to personnel caused by exhaust gas overflow. During sampling, nitrogen purging allows the reaction materials to be collected directly, reducing the cumbersome process of workers wearing protective equipment, improving work efficiency, enhancing sampling safety, and enabling automated control of the sampling process, thus reducing labor intensity.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic sampling device for a reaction vessel, characterized in that, The system includes a reaction vessel (1), on which a sampling window (11) is provided. A movable steel pipe (112) is provided inside the sampling window (11), and the movable steel pipe (112) is connected to a main valve (121). The main valve (121) is connected to a first reducing tee (122). One end of the first reducing tee (122) is connected to a sampling valve (12), and the other end is connected to a second reducing tee (13). 3) One end is connected to a vacuum valve (14), and the other end is connected to a third reducing tee (15); one end of the third reducing tee (15) is connected to a nitrogen valve (151), and the other end is connected to a balance valve (16); the balance valve (16) is connected to a fourth reducing tee (17); the smaller diameter end of the fourth reducing tee (17) is connected to the sampling valve (12), and the larger diameter end is connected to the discharge port (18).

2. The automatic sampling device for the reaction vessel according to claim 1, characterized in that, A straight-through sight glass (183) is connected between the larger diameter pipe of the first reducing tee (122) and the second reducing tee (13).

3. The automatic sampling device for the reaction vessel according to claim 2, characterized in that, A gravity sensor (19) is provided on the through-view mirror (183).

4. The automatic sampling device for the reaction vessel according to claim 1, characterized in that, The nitrogen valve (151) is connected to a nitrogen check valve (20) via a pipeline, and the nitrogen check valve (20) is connected to a nitrogen source (21).

5. The automatic sampling device for the reaction vessel according to claim 1, characterized in that, The vacuum valve (14) is connected to a vacuum check valve (22) via a pipeline, and the vacuum check valve (22) is connected to a vacuum device (23).

6. The automatic sampling device for the reaction vessel according to claim 1, characterized in that, The movable steel pipe (112) is provided with a pipe flange (29), which is connected to the sampling window (11).

7. The automatic sampling device for the reaction vessel (1) according to claim 1, characterized in that, A connecting rod (291) is provided on the movable steel pipe (112), a tray (30) is provided on the connecting rod (291), and a sampling bottle (31) is fixedly connected on the tray (30). The sampling bottle (31) is located directly below the discharge port (18).

8. The automatic sampling device for the reaction vessel according to claim 1, characterized in that, Several temperature sensors (32) are equidistantly arranged on the side wall of the reactor (1).

9. The automatic sampling device for the reaction vessel according to claim 1, characterized in that, The movable steel pipe (112) includes two sections of steel pipe connected to each other by threads, and a sealing ring (35) is provided at the threaded connection of the two sections of steel pipe.

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