Control system and method for petrochemical parallel sampling of carbon fiber composite material

Abstract

The invention belongs to the technical field of parallel sampling control in the petrochemical industry production process, and provides a control system and method for petrochemical industry parallel sampling of a carbon fiber composite material, and the main scheme is as follows: a main controller unit sets a corresponding parallel sampling control strategy for the process of currently producing finished products; a slave controller unit is arranged to be matched with the process of producing the finished product, and a parallel sampling control strategy corresponding to the current process of producing the finished product is obtained and notified to a parallel sampling unit; the parallel sampling unit performs parallel sampling on finished products produced in the current process based on a parallel sampling control strategy; monitoring a sampling result of parallel sampling, generating monitoring result information, and sending the monitoring result information to a corresponding slave controller; the slave controller unit judges whether a finished product produced in the current process is qualified or not based on a comparison result of the monitoring result information and the standard monitoring result information, and informs the master controller unit of a finished product judgment result; and obtaining a finished product judgment result of each slave controller unit.

Description

Technical Field

[0001] The invention relates to the technical field of parallel sampling control in a petrochemical production process, and in particular to a control system and method for parallel sampling of carbon fiber composite material petrochemicals. Background Art

[0002] At present, petrochemical production processes mainly include organic chemical production processes, polymer chemical production processes and fine chemical production processes. For the processes involved in these production processes, some processes only need to obtain a single finished product. In more cases, many processes may produce multiple finished products. For example, the processes involved in polymer chemical production processes are based on organic raw materials and undergo various polymerization and condensation steps to produce synthetic fibers, synthetic resins, synthetic rubbers and other final products. For the finished products produced under these different processes, they need to be sampled and verified to be qualified before they can be mass-produced.

[0003] Based on the above situation, the current sampling methods mostly use manual sampling bottles for sampling and then conduct experimental analysis. Due to the risk of toxic gas leakage and inconvenience in sampling at many sampling sites, more and more intelligent robots are used to place and remove sampling bottles. For sampling samples, corresponding intelligent analysis instruments are also used to analyze whether the sampling samples are qualified according to the composition of the finished products.

[0004] Since the performance and composition of the finished products produced in different processes may be inconsistent, different intelligent analytical instruments are needed to achieve this. However, no matter which intelligent analytical instrument is used, the sampling points are relatively fixed, and the intelligent analytical instrument itself has a systematic error, which makes it more dependent on the precision of the corresponding intelligent analytical instrument when judging whether the sample is qualified.

[0005] Therefore, how to more accurately judge whether the finished products produced in different petrochemical production processes are qualified is a technical problem that needs to be solved urgently. Summary of the invention

[0006] The purpose of the present invention is to provide a control system and method for parallel sampling of carbon fiber composite materials in petrochemical industry, which can set corresponding parallel sampling control strategies according to the product performance of finished products produced in different processes, so as to improve the accuracy of sampling results in the petrochemical sampling process.

[0007] The present invention solves the technical problem and adopts the following technical solution: In one aspect, the present invention provides a control system for parallel sampling of carbon fiber composite materials in petrochemical industry, comprising: The process acquisition unit is used to obtain the process of producing finished products in the petrochemical production process; The main controller unit stores a finished product performance list corresponding to the process of the output finished product, and is used to match the corresponding finished product performance from the finished product performance list based on the current process of the output finished product, and set the corresponding parallel sampling control strategy for the process of the current output finished product based on the matched finished product performance, and is used to obtain the finished product judgment result of each slave controller unit; The slave controller unit is adaptively set with the process of the output finished product and stores standard monitoring result information, and is used to obtain the corresponding parallel sampling control strategy for the current process of the output finished product from the main controller unit, notify the parallel sampling unit, and is used to judge whether the finished product produced in the current process is qualified based on the comparison result between the monitoring result information and the standard monitoring result information, and notify the main controller unit of the finished product judgment result; The parallel sampling unit is made of carbon fiber composite material and is used to perform parallel sampling on the finished product produced in the current process based on the parallel sampling control strategy in the slave controller unit after receiving the parallel sampling notification from the slave controller unit; The sampling monitoring unit is used to monitor the sampling result of the parallel sampling, generate the monitoring result information and send it to the corresponding slave controller.

[0008] As a further optimization, after obtaining the process of the output finished product in the petrochemical production process through the process acquisition unit, it is judged whether the finished product produced in the current process is used as the raw material for the process of the next output finished product. If so, the current process is marked and the main controller unit is notified, otherwise the main controller unit is directly notified.

[0009] As a further optimization, when the main controller unit receives the notification of the process of the output finished product with a mark, the corresponding finished product performance of this process is stored in the form of the first finished product performance list; When the main controller unit receives the notification of the process of the finished product without a mark, the corresponding finished product performance of this process is stored in the form of the second finished product performance list.

[0010] As a further optimization, the main controller unit matches the corresponding finished product performance from the finished product performance list based on the current process of the output finished product, which means: If the current process has a mark, the main controller unit matches the corresponding finished product performance from the first finished product performance list; If the current process has no mark, the main controller unit matches the corresponding finished product performance from the second finished product performance list.

[0011] As a further optimization, if the matched finished product performance comes from the first finished product performance list, the main controller unit sets the corresponding parallel sampling control strategy for the process of the current output finished product, which means: Set a first quantity of sampling points for the process of the currently produced finished product, and set the position information of each sampling point, the sampling volume information of the sampling bottles in each sampling point, and the sampling timing information of each sampling point; If the matched finished product performance comes from the second finished product performance list, the main controller unit sets a corresponding parallel sampling control strategy for the process of the currently produced finished product, which means: Set a second quantity of sampling points for the process of the currently produced finished product, and set the position information of each sampling point, the sampling volume information of the sampling bottles in each sampling point, and the sampling timing information of each sampling point.

[0012] As a further optimization, the parallel sampling unit includes airtight sampling bottles, sampling valves, first pipelines, and second pipelines arranged at each sampling point. The first pipeline is arranged between the main pipeline of the current process and the sampling valve, and the second pipeline is arranged between the sampling valve and the airtight sampling bottle; The airtight sampling bottles, sampling valves, first pipelines, and second pipelines are all composite materials with carbon fiber wrapped on the outside and polytetrafluoroethylene as the inner liner.

[0013] As a further optimization, if the finished product produced by the current process is a gas, the sampling and monitoring unit is an infrared gas analyzer; if the finished product produced by the current process is a liquid, the sampling and monitoring unit is an image sensor; if the finished product produced by the current process is a fluid, the sampling and monitoring unit includes an infrared gas analyzer and an image sensor.

[0014] As a further optimization, if the current process has a mark, the adaptation setting of the slave controller unit to the process of the produced finished product means: The slave controller unit includes a first slave controller unit and a second slave controller unit, and both the first slave controller unit and the second slave controller unit store first standard monitoring result information; If the current process has no mark, the adaptation setting of the slave controller unit to the process of the produced finished product means: The slave controller unit is a third slave controller unit, and the third controller unit stores second standard monitoring result information.

[0015] As a further optimization, the controller unit judges whether the finished product produced by the current process is qualified based on the comparison result between the monitoring result information and the standard monitoring result information, and notifies the main controller unit of the finished product judgment result, which means: If the current process is marked, obtain the first monitoring result information through the first slave controller unit and the second slave controller unit respectively, and compare it with the first standard monitoring result information. If the comparison results are all within the first preset error range, it indicates that the finished product produced in the current process is qualified, and directly send the finished product judgment result to the master controller unit. Otherwise, it indicates that the finished product produced in the current process is unqualified, and send the finished product judgment result to the master controller unit and the sampling warning prompt terminal respectively; If the current process is not marked, obtain the second monitoring result information through the third controller unit, and compare it with the second standard monitoring result information. If the comparison result is within the second preset error range, it indicates that the finished product produced in the current process is qualified, and directly send the finished product judgment result to the master controller unit. Otherwise, it indicates that the finished product produced in the current process is unqualified, and send the finished product judgment result to the master controller unit and the sampling warning prompt terminal respectively.

[0016] On the other hand, the present invention also provides a control method for parallel sampling of carbon fiber composite materials in petrochemical industry, which is applied to the control system for parallel sampling of carbon fiber composite materials in petrochemical industry, and includes the following steps: Obtain the processes of producing finished products in the petrochemical production process, and store the finished product performance list corresponding to the processes of producing finished products through the master controller unit; Based on the current process of producing finished products, the master controller unit matches the corresponding finished product performance from the finished product performance list, and sets the corresponding parallel sampling control strategy for the current process of producing finished products based on the matched finished product performance; Adaptively set the slave controller unit for the process of producing finished products, store the standard monitoring result information, obtain the corresponding parallel sampling control strategy for the current process of producing finished products from the master controller unit, and notify the parallel sampling unit; Use the carbon fiber composite material to make a parallel sampling unit. After the parallel sampling unit receives the parallel sampling notification from the slave controller unit, based on the parallel sampling control strategy in the slave controller unit, perform parallel sampling on the finished products produced in the current process; Monitor the sampling results of the parallel sampling, generate the monitoring result information and send it to the corresponding slave controller; The slave controller unit judges whether the finished products produced in the current process are qualified based on the comparison result between the monitoring result information and the standard monitoring result information, and notifies the master controller unit of the finished product judgment result; Obtain the finished product judgment results of each slave controller unit.

[0017] The beneficial effects of the present invention are as follows: Through the above-mentioned control system and method for parallel sampling of carbon fiber composite materials in petrochemical industry, on the one hand, for different processes in the petrochemical production process, the present invention uses parallel sampling and verification through monitoring results, avoiding systematic errors caused by over-reliance on intelligent analysis instruments due to sampling and verification at a single sampling point. On the other hand, the present invention can use different parallel sampling control strategies based on the finished product performance of the finished products under different processes, rather than using a single sampling point sampling and verification strategy, thereby further improving the accuracy of the sampling verification results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the composition structure of a control system for parallel sampling of carbon fiber composite materials in petrochemical industry in Embodiment 1 of the present invention; Figure 2 It is a schematic diagram of the processes involved in the petrochemical production process in Embodiment 1 of the present invention; Figure 3 It is a schematic diagram of different sampling bottles set for different finished product performances in Process 2 in Embodiment 1 of the present invention; Figure 4 It is a flowchart of a control method for parallel sampling of carbon fiber composite materials in petrochemical industry in Embodiment 2 of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0020] Embodiment 1

[0021] What this embodiment provides is a control system for parallel sampling of carbon fiber composite materials in petrochemical industry. For its composition structure schematic diagram, see Figure 1 , where the system includes: A process acquisition unit for acquiring the processes of the finished products produced in the petrochemical production process; A main controller unit stores a finished product performance list corresponding to the processes of the produced finished products, and is used to match the corresponding finished product performance from the finished product performance list based on the current process of the produced finished products, and set a corresponding parallel sampling control strategy for the current process of the produced finished products based on the matched finished product performance, and is used to obtain the finished product judgment results of each slave controller unit; A slave controller unit, which is adaptively set according to the process of producing finished products and stores standard monitoring result information, is used to obtain a parallel sampling control strategy corresponding to the current process of producing finished products from the master controller unit, notify the parallel sampling unit, and is used to judge whether the finished products produced in the current process are qualified based on the comparison result between the monitoring result information and the standard monitoring result information, and notify the master controller unit of the finished product judgment result; A parallel sampling unit, made of carbon fiber composite material, is used to perform parallel sampling on the finished products produced in the current process based on the parallel sampling control strategy in the slave controller unit after receiving the parallel sampling notification from the slave controller unit; A sampling monitoring unit is used to monitor the sampling results of parallel sampling, generate monitoring result information and send it to the corresponding slave controller.

[0022] See Figure 2 , in this embodiment, assuming that the processes involved in the petrochemical production process include Process 1 - Process n, since the properties of the finished products produced in some processes are different, such as Process 2, the types of finished products produced in Process 2 and Process 1 are different. Therefore, in this embodiment, different parallel sampling control strategies need to be set for Process 1 and Process 2 to improve the accuracy of the sampling verification results.

[0023] In some cases, the properties of the finished products produced in the current process are single. In other cases, some of the finished products produced in a process need to be used as raw materials for the finished products produced in the next process. In this case, at this time, there is an association between the current process and the next process. Therefore, for the above different situations, the master controller unit can classify and store different parallel sampling results, and give timely warnings for different parallel sampling monitoring results. Therefore, in this embodiment, after obtaining the process of producing finished products in the petrochemical production process through the process acquisition unit, it is necessary to judge whether the finished products produced in the current process are used as raw materials for the process of producing the next finished product. If so, mark the current process and notify the master controller unit, otherwise directly notify the master controller unit.

[0024] In addition, since the number of processes with marks and processes without marks is not uniform, and the properties of the finished products produced in the same process are also different, in order to classify and store the above two types of processes to facilitate the subsequent accurate determination of different parallel sampling control strategies and thus improve the accuracy of the sampling verification results for all processes, in this embodiment, when the master controller unit receives a notification of the process of producing finished products with marks, the properties of the finished products corresponding to this process are stored in the form of a first finished product property list; When the master controller unit receives a notification of the process of finished products without marks, the properties of the finished products corresponding to this process are stored in the form of a second finished product property list.

[0025] Correspondingly, in this embodiment, the main controller unit matches the corresponding finished product performance from the finished product performance list based on the process of the currently produced finished product, which may mean that: If the current process is marked, the main controller unit matches the corresponding finished product performance from the first finished product performance list; If the current process is not marked, the main controller unit matches the corresponding finished product performance from the second finished product performance list.

[0026] Here, for the marked process, since the current process needs to use the finished product of the previous process as raw material, the composition of the finished product produced by the current process is more complex. Therefore, more sampling points need to be set. Its parallel sampling control strategy should pay more attention to the number of sampling points, the position of the sampling points, the sampling volume of the sampling bottles in each sampling point, and the sampling time sequence of each sampling point to ensure the accuracy of the parallel sampling results. Therefore, in this embodiment, if the matched finished product performance comes from the first finished product performance list, the main controller unit sets the corresponding parallel sampling control strategy for the process of the currently produced finished product, which may mean that: Set the first number of sampling points for the process of the currently produced finished product, and set the position information of each sampling point, the sampling volume information of the sampling bottles in each sampling point, and the sampling time sequence information of each sampling point; If the matched finished product performance comes from the second finished product performance list, the main controller unit sets the corresponding parallel sampling control strategy for the process of the currently produced finished product, which means that: Set the second number of sampling points for the process of the currently produced finished product, and set the position information of each sampling point, the sampling volume information of the sampling bottles in each sampling point, and the sampling time sequence information of each sampling point.

[0027] It should be noted that in this embodiment, for the marked process, it means that the composition of its produced finished product is more. Therefore, in order to ensure the accuracy of subsequent parallel sampling, the first number needs to be greater than the second number. See Figure 3, taking Process 2 as an example, a finished product has two sampling points. Correspondingly, it includes two sampling bottles, namely a1 and a2. Another finished product has three sampling points. Correspondingly, it includes three sampling bottles, namely b1, b2, and b3. Additionally, the position information of the sampling points can be freely set based on the specific pipeline to which the sampling bottles are connected. For example, in the case of a traditional annular pipeline, if the number of sampling points is two, then, to ensure the accuracy of parallel sampling results, the positions of the sampling points can be set at two diametrically opposite points on the ring. If the number of sampling points is three, then the annular pipeline can be equally divided into three parts, and sampling points can be set at the positions of the three equally divided points. For the sampling timing of the sampling points, it only applies to the case where there are multiple sampling points. In this case, the sampling timing can be set based on the amount of the sampling volume set for each sampling point. To improve the parallel sampling efficiency, the sampling point with a larger sampling volume should have an earlier sampling timing.

[0028] During the actual application process, since the finished products produced by the process may be gases, may be liquids, or may be gas-liquid mixtures (i.e., fluids), regardless of the state of the produced finished products, most of them are toxic and corrosive. Therefore, it is necessary to ensure the tightness of sampling. Therefore, in this embodiment, carbon fiber composite materials can be used to improve corrosion resistance. At the same time, during the parallel sampling process, since it is necessary to control the sampling volume, a corresponding valve body also needs to be set. Therefore, in this embodiment, the parallel sampling unit may include airtight sampling bottles, sampling valves, a first pipeline, and a second pipeline, etc., provided at each sampling point. Specifically, the first pipeline is provided between the main pipeline of the current process and the sampling valve for accessing the sampled finished product, and the second pipeline is provided between the sampling valve and the airtight sampling bottle for controlling the amount of the sampling volume. The airtight sampling bottles, sampling valves, first pipelines, and second pipelines can all be composite materials with carbon fiber wrapped on the outside and polytetrafluoroethylene as the inner liner to ensure the tightness and corrosion resistance of the sampling process.

[0029] It should be noted that if the finished product produced by the current process is a gas, the sampling and monitoring unit can be an infrared gas analyzer. At this time, the gas components can be analyzed by the infrared gas analyzer to obtain accurate monitoring results. If the finished product produced by the current process is a liquid, the sampling and monitoring unit can be an image sensor. At this time, the height information of the liquid in the sampling bottle can be obtained through the image sensor, and then combined with the volume of the sampling bottle to accurately obtain the monitoring results. If the finished product produced by the current process is a fluid, the sampling and monitoring unit can include an infrared gas analyzer and an image sensor to ensure the accuracy of the monitoring results.

[0030] It should be noted that for the processes with marking and without marking, since the produced finished products are different and the properties of the produced finished products are different, in order to more accurately determine the sampling and monitoring results, it is necessary to set different standard monitoring result information, and then combine the corresponding monitoring result information, and judge whether the finished products produced by the corresponding processes are qualified after comparison. Therefore, in this embodiment, if the current process has a marking, the adaptation setting of the slave controller unit to the process of producing the finished product may mean: The slave controller unit includes a first slave controller unit and a second slave controller unit, and the first standard monitoring result information is stored in both the first slave controller unit and the second slave controller unit; If the current process has no marking, the adaptation setting of the slave controller unit to the process of producing the finished product may mean: The slave controller unit is a third slave controller unit, and the second standard monitoring result information is stored in the third controller unit.

[0031] Correspondingly, the controller unit judges whether the finished product produced by the current process is qualified based on the comparison result between the monitoring result information and the standard monitoring result information, and notifies the main controller unit of the finished product judgment result, which may mean: If the current process has a marking, obtain the first monitoring result information through the first slave controller unit and the second slave controller unit respectively, and compare them with the first standard monitoring result information respectively. If the comparison results are all within the first preset error range, it means that the finished product produced by the current process is qualified, and directly send the finished product judgment result to the main controller unit; otherwise, it means that the finished product produced by the current process is unqualified, and send the finished product judgment result to the main controller unit and the sampling warning prompt terminal respectively; If the current process has no marking, obtain the second monitoring result information through the third controller unit, and compare it with the second standard monitoring result information. If the comparison result is within the second preset error range, it means that the finished product produced by the current process is qualified, and directly send the finished product judgment result to the main controller unit; otherwise, it means that the finished product produced by the current process is unqualified, and send the finished product judgment result to the main controller unit and the sampling warning prompt terminal respectively.

[0032] Embodiment 2

[0033] On the basis of Embodiment 1, this embodiment provides a control method for parallel sampling of carbon fiber composite materials in petrochemical industry. The flowchart is shown in Figure 4 Among them, the method includes the following steps: S1. Obtain the processes of producing finished products in the petrochemical production process, and store the finished product performance list corresponding to the processes of producing the finished products through the main controller unit; S2. Based on the process of the currently produced finished product, the main controller unit matches the corresponding finished product performance from the finished product performance list, and sets the corresponding parallel sampling control strategy for the process of the currently produced finished product based on the matched finished product performance; S3. Set up a slave controller unit adapted to the process of producing the finished product, store the standard monitoring result information, obtain the parallel sampling control strategy corresponding to the process of the currently produced finished product from the main controller unit, and notify the parallel sampling unit; S4. The parallel sampling unit is made of carbon fiber composite material. After receiving the parallel sampling notification from the slave controller unit, the parallel sampling unit performs parallel sampling on the finished product produced in the current process based on the parallel sampling control strategy in the slave controller unit; S5. Monitor the sampling results of the parallel sampling, generate the monitoring result information, and send it to the corresponding slave controller; S6. The slave controller unit determines whether the finished product produced in the current process is qualified based on the comparison result between the monitoring result information and the standard monitoring result information, and notifies the main controller unit of the finished product judgment result; S7. Obtain the finished product judgment results of each slave controller unit.

[0034] Based on the description of Embodiment 1, it can be seen that the application scenario and implementation principle of this embodiment are the same as those of Embodiment 1, so they will not be repeated here.

[0035] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A control system for parallel sampling of carbon fiber composite materials in petrochemical industry, characterized in that: include: The process acquisition unit is used to obtain the process of producing finished products in the petrochemical production process; A main controller unit, storing a finished product performance list corresponding to the process of producing finished products, used to match the corresponding finished product performance from the finished product performance list based on the process of currently producing finished products, and to set a corresponding parallel sampling control strategy for the process of currently producing finished products based on the matched finished product performance, and to obtain the finished product judgment result of each slave controller unit; The slave controller unit is adapted to the process of producing finished products and stores standard monitoring result information, and is used to obtain the parallel sampling control strategy corresponding to the process of currently producing finished products from the main controller unit, and notify the parallel sampling unit, and is used to judge whether the finished product produced by the current process is qualified based on the comparison result of the monitoring result information and the standard monitoring result information, and notify the main controller unit of the finished product judgment result; The parallel sampling unit is made of carbon fiber composite material and is used to perform parallel sampling on the finished products outputted from the current process based on the parallel sampling control strategy in the slave controller unit after receiving the parallel sampling notification from the slave controller unit; The sampling monitoring unit is used to monitor the sampling results of parallel sampling, generate monitoring result information and send it to the corresponding slave controller.

2. A carbon fiber composite material petrochemical parallel sampling control system according to claim 1, characterized in that: After obtaining the process of producing finished products in the petrochemical production process through the process acquisition unit, it is determined whether the finished product produced by the current process is used as the raw material for the next process of producing finished products. If so, the current process is marked and the main controller unit is notified, otherwise the main controller unit is directly notified.

3. A carbon fiber composite material petrochemical parallel sampling control system according to claim 2, characterized in that: When the main controller unit receives a process notification of producing a finished product with a mark, the finished product performance corresponding to the process is stored in the form of a first finished product performance list; When the main controller unit receives a process notification of a finished product without a mark, the finished product performance corresponding to the process is stored in the form of a second finished product performance list.

4. A carbon fiber composite material petrochemical parallel sampling control system according to claim 3, characterized in that: The main controller unit matches the corresponding finished product performance from the finished product performance list based on the current process of producing the finished product, which means: If the current process has a mark, the main controller unit matches the corresponding finished product performance from the first finished product performance list; If the current process is not marked, the main controller unit matches the corresponding finished product performance from the second finished product performance list.

5. A carbon fiber composite material petrochemical parallel sampling control system according to claim 3, characterized in that: If the matched finished product performance comes from the first finished product performance list, the main controller unit sets a parallel sampling control strategy corresponding to the process setting of the current finished product output, which means: Setting a first number of sampling points for the process of currently producing finished products, and setting the position information of each sampling point, the sampling volume information of the sampling bottle in each sampling point, and the sampling timing information of each sampling point; If the matched finished product performance comes from the second finished product performance list, the main controller unit sets a parallel sampling control strategy corresponding to the process setting of the current finished product output, which means: A second number of sampling points are set for the process of currently producing finished products, and the position information of each sampling point, the sampling volume information of the sampling bottle in each sampling point, and the sampling timing information of each sampling point are set.

6. A carbon fiber composite material petrochemical parallel sampling control system according to claim 5, characterized in that: The parallel sampling unit includes a sealed sampling bottle, a sampling valve, a first pipeline and a second pipeline arranged at each sampling point, wherein the first pipeline is arranged between the main pipeline of the current process and the sampling valve, and the second pipeline is arranged between the sampling valve and the sealed sampling bottle; The sealed sampling bottle, the sampling valve, the first pipeline and the second pipeline are all wrapped with carbon fiber, and the inner shell is a composite material of polytetrafluoroethylene.

7. A carbon fiber composite material petrochemical parallel sampling control system according to claim 1, characterized in that: If the finished product of the current process is gas, the sampling and monitoring unit is an infrared gas analyzer; if the finished product of the current process is liquid, the sampling and monitoring unit is an image sensor; if the finished product of the current process is fluid, the sampling and monitoring unit includes an infrared gas analyzer and an image sensor.

8. The carbon fiber composite material petrochemical parallel sampling control system according to claim 1, characterized in that: If the current process is marked, the adaptation setting of the slave controller unit to the process of outputting the finished product means: The slave controller unit comprises a first slave controller unit and a second slave controller unit, wherein the first slave controller unit and the second slave controller unit both store first standard monitoring result information; If the current process is not marked, the adaptation setting of the slave controller unit to the process of producing the finished product means: The slave controller unit is a third slave controller unit, and the third controller unit stores second standard monitoring result information.

9. A carbon fiber composite material petrochemical parallel sampling control system according to claim 8, characterized in that: The controller unit determines whether the finished product of the current process is qualified based on the comparison result of the monitoring result information and the standard monitoring result information, and notifies the main controller unit of the finished product judgment result, which means: If the current process is marked, the first monitoring result information is obtained through the first slave controller unit and the second slave controller unit respectively, and compared with the first standard monitoring result information respectively. If the comparison results are both within the first preset error range, it means that the finished product produced by the current process is qualified, and the finished product judgment result is directly sent to the main controller unit. Otherwise, it means that the finished product produced by the current process is unqualified, and the finished product judgment result is sent to the main controller unit and the sampling early warning prompt terminal respectively; If the current process is not marked, the second monitoring result information is obtained through the third controller unit and compared with the second standard monitoring result information. If the comparison result is within the second preset error range, it means that the finished product produced by the current process is qualified, and the finished product judgment result is sent directly to the main controller unit. Otherwise, it means that the finished product produced by the current process is unqualified, and the finished product judgment result is sent to the main controller unit and the sampling early warning prompt terminal respectively.

10. A control method for parallel sampling of carbon fiber composite materials in petrochemical industry, applied to a control system for parallel sampling of carbon fiber composite materials in petrochemical industry according to any one of claims 1 to 9, characterized in that: The steps include: Acquire the process of producing finished products in the petrochemical production process, and store the finished product performance list corresponding to the process of producing the finished products through the main controller unit; Matching corresponding finished product performance from the finished product performance list based on the process currently producing the finished product through the main controller unit, and setting a corresponding parallel sampling control strategy for the process currently producing the finished product based on the matched finished product performance; The slave controller unit is set to match the process of producing finished products, and the standard monitoring result information is stored. The parallel sampling control strategy corresponding to the process of currently producing finished products is obtained from the master controller unit, and the parallel sampling unit is notified; A parallel sampling unit is made of carbon fiber composite material. After the parallel sampling unit receives a parallel sampling notification from a slave controller unit, the parallel sampling is performed on the finished product outputted from the current process based on the parallel sampling control strategy in the slave controller unit. Monitor the sampling results of parallel sampling, generate monitoring result information and send it to the corresponding slave controller; The slave controller unit determines whether the finished product of the current process is qualified based on the comparison result between the monitoring result information and the standard monitoring result information, and notifies the master controller unit of the finished product judgment result; The finished product judgment result of each slave controller unit is obtained.

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