Sampling device and polymerization equipment
By using a heat tracing pipe and heating sleeve in the sampling device to heat the sampling pipe, sampling valve and sampling tank, the problem of blockage in the sampling device of the polymer kettle is solved, and the sampling is smoothly carried out under high temperature and high pressure.
Patent Information
- Application Number
- CN202421765965.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-24
AI Technical Summary
In the prior art, the sampling device of the polymerization kettle is prone to blockage of the sampling pipeline under high temperature and high pressure, resulting in unsuccessful sampling.
In the sampling device, the heating pipe and the heating sleeve are used to heat the sampling pipe, the sampling valve and the sampling tank to ensure that the material remains above the melting point of the material during the sampling process and prevent clogging.
Effectively prevent blockage of the sampling pipeline and ensure the smooth progress of the sampling process.
Smart Images
Figure CN223064874U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of samplers, and particularly relates to a sampling device and a polymerization device. Background Art
[0002] At present, polymerization reactions often occur in some industrial polymerization kettles under high temperature and high pressure. The sampling devices used for these polymerization kettles often have problems of blocked sampling pipelines. Since the materials in the polymerization kettle react under high temperature and high pressure processes, the intermediate samples or liquid materials taken out from the polymerization kettle are mostly high melting point and high viscosity products. During or after the sampling process, the temperature of the liquid material will drop and then gradually thicken, which easily causes the sampling pipeline to be blocked and thus unable to sample smoothly. Summary of the Utility Model
[0003] In view of the above problems existing in the prior art, the purpose of the embodiments of the present utility model is to provide a sampling device and a polymerization device. This sampling device can ensure that the material remains above the melting point of the material all the time during the process of entering the sampling tank, without the situation of pipeline blockage, and ensure the smooth progress of sampling.
[0004] The technical solution adopted in the embodiments of the present utility model is as follows:
[0005] A sampling device is used on a polymerization device. The polymerization device includes a polymerization kettle. This sampling device includes:
[0006] A sampling pipe is arranged on the polymerization kettle and is communicated with the inside of the polymerization kettle. The outside of the sampling pipe is wound with a first heat tracing pipe.
[0007] A sampling valve is arranged on the sampling pipe. The sampling valve is provided with a discharge connection head. The sampling valve can connect or disconnect the sampling pipe and the discharge connection head. The outside of the sampling valve is coated with a heating sleeve. The heating sleeve includes a first coating shell and a second coating shell that are rotatably connected. The two coating shells can rotate relative to each other to jointly coat the sampling valve. Second heat tracing pipes are respectively arranged inside the two first coating shells.
[0008] A sampling tank is detachably connected to the discharge connection head and is used to receive and store the material from the sampling pipe. The outside of the sampling tank is wound with a third heat tracing pipe.
[0009] Further, a hook is arranged at the free end of the first coating shell, and a snap ring is arranged at the free end of the second coating shell. When the two coating shells rotate relative to each other to coat the sampling valve, the hook can hook the snap ring.
[0010] Further, both the first coating shell and the second coating shell include a bottom shell and a shell cover that is detachably buckled on the bottom shell. The second heat tracing pipe is arranged inside the bottom shell.
[0011] Further, there are multiple second heat tracing pipes located inside the bottom shell, and the multiple second heat tracing pipes are arranged at intervals inside the bottom shell.
[0012] Further, the second heat tracing pipes are respectively electric heating pipes, and insulating asbestos is filled between two adjacent second heat tracing pipes and between the second heat tracing pipes and the bottom shell.
[0013] Further, the first heat tracing pipe and the third heat tracing pipe are respectively electric heating pipes.
[0014] Further, a tank connection head is provided on the sealed sampling tank, and the tank connection head is in threaded connection with the discharge connection head.
[0015] Further, the sampling pipe includes a main pipe communicating with the inside of the polymerization kettle and branch pipes respectively communicating with the main pipe;
[0016] The sampling valve includes a main sampling valve located on the main pipe and a branch sampling valve located on the branch pipe.
[0017] A polymerization device includes a polymerization kettle and also includes a sampling device according to any one of the above embodiments.
[0018] Compared with the prior art, the beneficial effects of the embodiments of the present utility model are as follows:
[0019] In the sampling device of the present utility model, the first heat tracing pipe is wound around the sampling pipe, the sampling valve is covered with a heating sleeve, the second heat tracing pipe is arranged inside the heating sleeve, and the third heat tracing pipe is wound around the sampling tank, which can ensure that the material in the polymerization kettle remains above the melting point of the material all the time during the process of entering the sampling tank and being taken out of the sampling tank, and the situation of blockage of the sampling pipeline will not occur, ensuring the smooth progress of sampling.
[0020] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not used to limit the present utility model.
[0021] The summary of various implementations or examples of the technology described in the present utility model is not a full disclosure of the entire scope of the disclosed technology or all features. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In the drawings which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The drawings generally illustrate various embodiments by way of example and not by way of limitation, and are used together with the description of the specification and the claims to explain the embodiments of the utility model described. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts.
[0023] Figure 1Schematic structural diagram of the sampling tube in the embodiment of the present utility model;
[0024] Figure 2 Exploded view of the sampling tank in the embodiment of the present utility model;
[0025] Figure 3 Schematic structural diagram of the heating sleeve in the embodiment of the present utility model.
[0026] In the figure: 1, polymerization kettle; 2, sampling valve; 20, main sampling valve; 21, branch sampling valve; 3, sampling tube; 30, main pipe; 31, branch pipe; 4, sampling tank; 41, tank body; 42, lower end cap; 43, upper end cap; 44, exhaust passage; 45, sealing ring; 46, upper pressing plate; 47, feed pipeline; 5, heating sleeve; 51, first covering shell; 510, bottom shell; 511, shell cover; 52, second covering shell; 53, hook; 54, snap ring; 55, electric heating tube. Detailed implementation manners
[0027] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0028] Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those of ordinary skill in the art to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0029] In order to keep the following description of the embodiments of the present utility model clear and concise, the detailed descriptions of known functions and known components are omitted in the present utility model.
[0030] An embodiment of the utility model provides a sampling device for a polymerization device. The polymerization device includes a polymerization kettle and is mainly used for preparing high molecular compounds. The sampling device can be used for sampling polymer melts and intermediate products in the polymerization kettle, and is particularly suitable for sampling high melting point polymer melts (with a melting point above 210 °C) and intermediate products thereof (such as salt solutions, prepolymers, etc.).
[0031] As Figures 1 to 3 shown, the sampling device includes a sampling tube 3, a sampling valve 2 and a sampling tank 4.
[0032] The sampling tube 3 is arranged on the polymerization kettle 1 and is communicated with the inside of the polymerization kettle 1. The outside of the sampling tube 3 is wound around a first heat tracing pipe (not shown in the figure), and the sampling tube 3 can be heated through the first heat tracing pipe.
[0033] The sampling valve 2 is arranged on the sampling tube 3. An outlet connector (not shown in the figure) is arranged on the sampling valve 2. The sampling valve 2 can connect or disconnect the sampling tube 3 and the outlet connector. The sampling valve 2 can play the role of a switch. When the sampling valve 2 is opened, the sampling tube 3 and the outlet connector are connected; when the sampling valve 2 is closed, the sampling tube 3 and the outlet connector are no longer connected.
[0034] The outside of the sampling valve 2 is covered with a heating sleeve 5. The heating sleeve 5 includes a first covering shell 51 and a second covering shell 52 which are rotatably connected. As Figure 3 shown, the two covering shells can rotate relative to each other to jointly cover the sampling valve 2. Second heat tracing pipes are respectively arranged inside the two first covering shells 51. The sampling valve 2 can be heated through the second heat tracing pipes inside the covering shells.
[0035] The sampling tank 4 is detachably connected to the outlet connector on the sampling valve 2 and is used to receive and store the materials from the sampling tube 3. The outside of the sampling tank 4 is wound around a third heat tracing pipe (not shown in the figure), and the sampling tank 4 can be heated through the third heat tracing pipe.
[0036] In the sampling device of this embodiment, the sampling tube 3 is wound around with a first heat tracing pipe, the sampling valve 2 is covered with a heating sleeve 5, second heat tracing pipes are arranged inside the heating sleeve 5, and the sampling tank 4 is wound around with a third heat tracing pipe. When sampling the polymerization kettle 1, the first heat tracing pipe, the second heat tracing pipe and the third heat tracing pipe are respectively started, which can ensure that the materials in the polymerization kettle 1 always remain above the melting point of the materials during the process of entering the sampling tank 4 and being taken out from the sampling tank 4, and the situation of blockage of the sampling tube 3 will not occur, ensuring the smooth progress of sampling.
[0037] The shapes of the two covering shells in this embodiment are not specifically limited and can be specifically determined according to the structure of the sampling valve 2, as long as it is ensured that the two covering shells can jointly wrap the valve body. The two covering shells can be made by processing techniques such as injection molding to ensure that the inner wall surface of the covering shell fits the outer wall surface of the sampling valve 2.
[0038] The two cladding shells can be made of some materials with good heat conduction performance, such as stainless steel. At the same time, some substances with good heat conduction performance can be filled between the inner wall surface of the cladding shell and the sampling valve 2, so as to facilitate the transfer of heat to the sampling valve 2.
[0039] To facilitate the connection and separation of the two cladding shells, as Figure 3 shown, in some embodiments, the free end of the first cladding shell 51 is provided with a hook 53, and the free end of the second cladding shell 52 is provided with a snap ring 54.
[0040] When the two cladding shells rotate relative to each other to wrap the sampling valve 2, the hook 53 can hook the snap ring 54, so as to ensure that the two cladding shells can be stably combined together. When it is necessary to remove the heating sleeve 5 from the sampling valve 2, just separate the hook 53 and the snap ring 54.
[0041] As Figure 3 shown, in some embodiments, both the first cladding shell 51 and the second cladding shell 52 include a bottom shell 510 and a shell cover 511 buckled on the bottom shell 510. The bottom shells 510 of the two cladding shells are rotatably connected together.
[0042] A cavity or groove structure for placing the second heating pipe is provided in the bottom shell 510. The second heating pipe is arranged in the cavity or groove in the bottom shell 510, and then the shell cover 511 can be buckled to complete the assembly of the second heating pipe. The materials of the bottom shell 510 and the shell cover 511 can be selected from materials with good heat conduction performance such as stainless steel.
[0043] Preferably, in some embodiments, there are multiple second heating pipes located in the bottom shell 510. The shape of the second heating pipe can be strip-shaped, and multiple second heating pipes are arranged at intervals in the bottom shell 510.
[0044] In some embodiments, the first heating pipe wound around the sampling pipe 3 and the second heating pipe located in the cladding shell can be respectively electric heating pipes 55, and the electric heating pipes 55 can be used to conveniently heat to a relatively high temperature. For example, the sampling pipe 3 can be heated to 350 degrees by the electric heating pipes 55 for heat preservation, which can meet the sampling temperature requirements of most high-temperature resins.
[0045] In some embodiments, when the first heating element is the electric heating pipe 55, the electric heating pipe 55 is wound around the sampling pipe 3, and the heat generated by the energization and heating of the electric heating pipe 55 is transmitted to the sampling pipe 3, and then the material in the sampling pipe 3 is heated.
[0046] It is easy to know that the first heating element is wound on the area of the sampling pipe 3 where the sampling valve 2 is not provided, so as to heat the material in the pipe body, so as to ensure that the material will not cool and thicken in the sampling pipe 3 and block the pipeline.
[0047] In some embodiments, when the second heat tracing pipes in the two cladding shells of the heating jacket 5 are electric heating pipes 55, insulating asbestos or other insulating materials are filled between two adjacent electric heating pipes 55 and between the electric heating pipes 55 and the bottom shell 510 respectively.
[0048] In some embodiments, a tank body connector (not shown in the figure) is provided on the sampling tank 4. The tank body connector is communicated with the inside of the sampling tank 4. The tank body connector is threadedly connected to the discharge connector. After the tank body connector is connected to the discharge connector on the sampling valve 2 and the sampling valve 2 is opened, the material in the sampling pipe 3 can directly enter the sampling tank 4 through the discharge connector and the tank body connector.
[0049] As Figure 2 shown, the sampling tank 4 of this embodiment mainly includes a tank body 41 with both ends open, an upper end cap 43 for covering the open top of the tank body 41, and a lower end cap 42 for covering the open bottom of the tank body 41.
[0050] Sealing rings 45 are respectively provided between the upper end cap 43 and the lower end cap 42 and the tank body 41 to ensure the sealing of the connection. An exhaust passage 44 is provided on the tank body 41, and a valve is provided in the exhaust passage 44.
[0051] The upper end cap 43 is provided with a connection hole. The sampling tank 4 further includes an upper pressing plate 46 located inside the upper end cap 43 and buckling on the open top end of the covering tank body 41. A feed pipe 47 extending into the connection hole is provided on the upper pressing plate 46, and the feed pipe 47 can form the tank body connector of the sampling tank 4. Or the feed pipe 47 can be connected to an intermediate connector to form the tank body connector. The intermediate connector can be located outside the tank body for threaded connection with the discharge connector on the sampling valve 2, so as to facilitate the material in the sampling tank 4 to flow into the sampling tank 4.
[0052] It should be noted that the third heat tracing pipe wound around the sampling tank 4 in this embodiment can also be an electric heating pipe 55. In this way, the sampling tank 4 adopts a tank body structure with heat tracing, which can ensure smooth sampling and successful sample extraction. In addition, for samples containing solvents, the solvents can be prevented from flowing out, and the state of the sample after extraction is the same as that in the autoclave.
[0053] As Figure 1 shown, in some embodiments, the sampling pipe 3 includes a main pipe 30 communicated with the inside of the polymerization autoclave 1 and branch pipes 31 respectively communicated with the main pipe 30. The sampling valve 2 includes a sampling main valve 20 located on the main pipe 30 and a sampling branch valve 21 located on the branch pipe 31. First heat tracing pipes are wound on the main pipe 30 and the branch pipes 31 respectively, and heating jackets 5 are respectively covered on the sampling main valve 20 and the sampling branch valve 21.
[0054] Each sampling branch valve 21 forms a sampling point respectively. Multiple sampling points can facilitate the replacement of the sampling valve 2, avoiding affecting sampling after the sampling valve 2 is blocked.
[0055] In some embodiments, the present embodiment further provides a polymerization device, which includes a polymerization kettle 1 and a sampling device described in any one of the above embodiments.
[0056] The above description is intended to be illustrative rather than restrictive. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of their aspects) can be used in combination with each other, and considering these embodiments, they can be combined with each other in various combinations or permutations.
Claims
1. A sampling device for use on a polymerization apparatus, the polymerization apparatus comprising a polymerization kettle, characterized in that, Comprising: A sampling tube, which is arranged on the polymerization kettle and is in communication with the inside of the polymerization kettle, and a first heat tracing pipe is wound around the outside of the sampling tube; A sampling valve, which is arranged on the sampling tube, an outlet connection head is arranged on the sampling valve, the sampling valve can communicate or cut off the sampling tube and the outlet connection head, and a heating jacket is covered outside the sampling valve; the heating jacket includes a first covering shell and a second covering shell which are rotatably connected, and the two covering shells can rotate relative to each other to integrally cover the sampling valve, and second heat tracing pipes are respectively arranged inside the two first covering shells; A sampling tank, which is detachably connected to the outlet connection head and is used for receiving and storing the material from the inside of the sampling tube, and a third heat tracing pipe is wound around the outside of the sampling tank.
2. The sampling device according to claim 1, wherein A hook is arranged at the free end of the first covering shell, and a snap ring is arranged at the free end of the second covering shell. When the two covering shells rotate relative to each other to cover the sampling valve, the hook can hook the snap ring.
3. The sampling device according to claim 2, characterized in that, Both the first covering shell and the second covering shell include a bottom shell and a shell cover which is detachably buckled on the bottom shell, and the second heat tracing pipe is arranged inside the bottom shell.
4. The sampling device according to claim 3, characterized in that, There are multiple second heat tracing pipes located inside the bottom shell, and the multiple second heat tracing pipes are arranged at intervals inside the bottom shell.
5. A sampling device according to claim 3, characterized in that, The second heat tracing pipe is an electric heating pipe, and insulating asbestos is filled between adjacent two second heat tracing pipes and between the second heat tracing pipe and the bottom shell respectively.
6. The sampling device according to claim 1, wherein, The first heat tracing pipe and the third heat tracing pipe are respectively electric heating pipes.
7. A sampling device as claimed in claim 1, wherein, A tank body connection head is arranged on the sampling tank, and the tank body connection head is threadedly connected to the outlet connection head.
8. A sampling device according to claim 1, characterized in that, The sampling tube includes a main pipe in communication with the inside of the polymerization kettle and branch pipes respectively in communication with the main pipe; The sampling valve includes a sampling main valve located on the main pipe and a sampling branch valve located on the branch pipe.
9. An aggregation device, comprising an aggregation kettle, characterized in that, It also includes a sampling device according to any one of the above claims 1-8.