An online analysis system applied to a high-performance resin production line

Abstract

The application relates to an online analysis system applied to a high-performance resin production line, and relates to the technical field of resin production, which comprises a sampling module, a main flow path module, a rapid reflux module, an analysis and detection module and a tail gas recovery treatment module. The sampling module can be inserted into a resin gas generation flow device, and can convey resin gas to the analysis and detection module through the main flow path module. The analysis and detection module can detect and analyze the resin gas. The two ends of the rapid reflux module are connected with the main flow path module and the tail gas recovery treatment module, so that part of the resin gas in the main flow path can be branched to the tail gas recovery treatment module. The analysis and detection module is connected with the tail gas recovery treatment module, so that the resin gas after detection and analysis can be recovered and treated. The application has the effects of improving the gas flow rate, shortening the time for reaching an analyzer, reducing detection errors and improving the detection accuracy of the online analysis system.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of resin production, in particular to an online analysis system applied to a high-performance resin production line. BACKGROUND

[0002] High-performance resin materials, such as epoxy resin and polyimide, play an irreplaceable role in the fields of aerospace and high-end electronic materials due to their excellent chemical stability, mechanical strength, thermal stability and electrical insulation performance. In order to ensure the production quality and process optimization of high-performance resin, it is crucial to analyze the resin gas generated in the production process in real time. Such online analysis not only enables timely grasp of the changes in resin gas composition, but also provides data support for production process adjustment, thereby improving product quality and production efficiency.

[0003] In the prior art, in order to detect and analyze the resin gas, the generated resin gas is introduced into a detection and analysis instrument for detection and analysis, and after the detection and analysis is completed, the resin gas is introduced into a treatment unit for treatment, thereby completing the detection and analysis of the resin gas. Since the resin gas is in a high-temperature and high-pressure state, the pipe diameter of the sampling pipeline is large to avoid condensation and blockage of the pipeline by the resin gas, and the flow rate of the sampled resin gas is greater than the required gas flow rate of the detection and analysis instrument. In the prior art, since the flow rate of the sampled resin gas is greater than the required gas flow rate of the detection and analysis instrument, the flow rate of the sampled resin gas in the pipeline is slow, resulting in that the sample entering the detection and analysis instrument is the sample of several minutes ago, and the sample result detected by the detection and analysis instrument has high delay and large error. SUMMARY

[0004] In order to improve the problem that the flow rate of the sampled resin gas in the pipeline is slow, resulting in that the sample result detected by the detection and analysis instrument has high delay and large error, the application provides an online analysis system applied to a high-performance resin production line.

[0005] The online analysis system applied to the high-performance resin production line provided by the application adopts the following technical scheme:

[0006] The utility model provides an online analysis system applied to high performance resin production line, an online analysis system applied to high performance resin production line, including sampling module, main stream path module, fast backflow module, analysis detection module, tail gas recovery processing module, sampling module can insert resin gas generation flow circulation device in and can through main stream path module with resin gas is transported to analysis detection module, analysis detection module can carry out detection analysis to resin gas, the both ends of fast backflow module are connected with main stream path module, tail gas recovery processing module respectively to can with main stream path module part resin gas is shunted to tail gas recovery processing module, analysis detection module is connected with tail gas recovery processing module to can after detection analysis resin gas recovery processing.

[0007] Through adopting the technical scheme, the sampling module safely and accurately collects representative samples, and the resin gas is transported to the analysis detection module through the main stream path module for detection and analysis. The fast backflow module can shunt part of the resin gas in the main stream path to the tail gas recovery processing module, effectively improve the gas flow rate, shorten the time to reach the analyzer, reduce the detection error, and thus improve the detection accuracy of the online analysis system. At the same time, the resin gas after analysis and detection can be recovered and processed by the tail gas recovery processing module, ensuring the safety and environmental protection of the system operation. The whole system is reasonably designed, and the modules work cooperatively, significantly improving the gas analysis efficiency and safety in the high performance resin production process.

[0008] Preferably, the fast backflow module includes a backflow pipeline, a first flow meter, a one-way valve, and a switch valve. The two ends of the backflow pipeline are connected with the main stream path module and the tail gas recovery processing module, respectively. The first flow meter, the one-way valve, and the switch valve are connected in series in the fast backflow module.

[0009] Through the above technical scheme, the backflow pipeline in the fast backflow module realizes the connection between the main stream path module and the tail gas recovery processing module, ensuring that part of the resin gas can be shunted to the tail gas recovery processing module in time. The setting of the first flow meter can accurately control and monitor the flow of backflow gas, ensuring the stability of the system operation. The one-way valve effectively prevents gas backflow, avoids interference with the analysis detection module, and improves the safety of the system. The switch valve can flexibly adjust the opening or closing of the backflow path according to actual needs, enhancing the controllability of the system. These technical means work together to significantly improve the detection accuracy and overall operation efficiency of the online analysis system.

[0010] Preferably, the sampling module includes a sampling probe. The front end of the sampling probe can be inserted into the resin gas generation flow circulation device. The sampling probe is connected with the pipeline in the main stream path module through a double-layer clamping sleeve.

[0011] By adopting the technical scheme, the sampling probe can safely and accurately collect a representative sample from the resin gas generating flow device. The double-layer sleeve connection mode not only ensures the sealing between the sampling module and the main flow path module, effectively preventing the sample from being contaminated by the external environment, but also improves the safety of the operator and avoids the risk of high-temperature and high-pressure gas leakage.

[0012] Preferably, the analysis and detection module comprises a detection device, a purge unit, the inlet end of the detection device is connected with the main flow path module, the outlet end is connected with the tail gas recovery and treatment module, and the purge unit is connected with the detection device and a nitrogen supply system to enable nitrogen to be blown into the detection device for decompression operation of the resin gas.

[0013] By adopting the technical scheme, the detection device is connected with the main flow path module and the tail gas recovery and treatment module, realizing the transportation and analysis and detection of the resin gas. The purge unit blows nitrogen into the detection device through the nitrogen supply system to perform decompression operation on the resin gas, effectively improving the safety and stability of the system, avoiding the explosion risk caused by excessively high pressure, and ensuring that the detection device can accurately analyze and detect the resin gas.

[0014] Preferably, a shunt assembly is connected to the pipeline upstream of the inlet end of the detection device, the shunt assembly is connected with the pipeline downstream of the outlet end of the detection device, and the shunt assembly can shunt the resin gas flowing into the detection device from the main flow path module to the pipeline downstream of the outlet end of the detection device.

[0015] By adopting the technical scheme, the shunt assembly shunts the resin gas entering the detection device into the pipeline downstream of the outlet end of the detection device again, reduces the stagnation phenomenon of the resin gas in the pipeline of the inlet end of the detection device, improves the speed of the resin gas entering the detection device, shortens the time of the resin gas reaching the detection device, reduces the detection error, and improves the detection accuracy of the online analysis system.

[0016] Preferably, the shunt assembly comprises a centrifugal housing, an impeller and a distribution adjusting piece, the impeller is rotationally arranged in the centrifugal housing, the pipeline of the main flow path module is connected with the centrifugal housing and opposite to the center opening of the impeller, a distribution space is formed between the outer edge of the impeller and the inner side wall of the centrifugal housing, the distribution adjusting piece is arranged in the distribution space and divides the distribution space into two guide cavities in communication with the impeller, the distribution adjusting piece can adjust the volume ratio of the two guide cavities, the pipeline of the inlet end of the detection device is connected with one of the guide cavities, and the other guide cavity is connected with the pipeline of the outlet end of the detection device, so as to shunt the resin gas flowing into the detection device from the main flow path module.

[0017] By adopting the technical scheme, when the resin gas is branched, the impeller rotates and forms a negative pressure zone at the center opening, the resin gas enters the negative pressure zone and is uniformly dispersed into the distribution space at the edge under the centrifugal action of the impeller, the volume ratio of the two guide cavities is adjusted by the distribution adjusting piece, the resin gas entering the detection device and branched to the downstream pipeline is adjusted, the amount of resin gas entering the detection device can be more accurately adjusted, and the timeliness of detection of the detection device is improved. The resin gas is branched by the centrifugal method, the continuity of the resin gas is improved, the disturbance generated in the flow process of the resin gas is reduced, and the detection device detects the resin gas more stably.

[0018] Preferably, the distribution adjusting piece includes two partitions, the two partitions are slidingly arranged in the distribution space, so that the positions of the two partitions can be adjusted, and a cover plate is detachably connected to the centrifugal shell, the cover plate can block the centrifugal shell and fix the partitions in the distribution space.

[0019] By adopting the technical scheme, when the resin gas is branched, the impeller rotates and forms a negative pressure zone at the center opening, the resin gas enters the negative pressure zone and is uniformly dispersed into the distribution space at the edge under the centrifugal action of the impeller, the volume ratio of the two guide cavities is adjusted by the distribution adjusting piece, the resin gas entering the detection device and branched to the downstream pipeline is adjusted, the amount of resin gas entering the detection device can be more accurately adjusted, and the timeliness of detection of the detection device is improved. The resin gas is branched by the centrifugal method, the continuity of the resin gas is improved, the disturbance generated in the flow process of the resin gas is reduced, and the detection device detects the resin gas more stably.

[0020] Preferably, the tail gas recovery processing module includes a flame arrester, a jet pump and a buffer, the flame arrester is connected in series to the branch pipe of the pipeline in the tail gas recovery processing module, the jet pump and the buffer are connected in series to the pipeline and are both connected to the nitrogen supply system, the resin gas is pressurized, and the tail gas recovery processing module is connected to a flare device to process the resin gas.

[0021] By adopting the technical scheme, the flame arrester can effectively prevent the spread of flammable gas flame and improve the safety of the system; the jet pump uses nitrogen pressurization to drive the tail gas to flow to the flare position, ensuring the efficiency of tail gas treatment; the buffer weakens the vibration caused by the fluctuation of the tail gas, reduces the influence on the analyzer, and improves the stability of the system.

[0022] Preferably, it also includes a preparation module and a calibration module, the preparation module is connected to the nitrogen supply system and the main flow path module, so that the pipelines of the main flow path module, the rapid backflow module, the analysis and detection module and the tail gas recovery processing module can be purged by conveying nitrogen; the calibration module is connected to the main flow path module, so that zero gas and range gas can be respectively introduced into the analysis and detection module to calibrate the zero point and the range of the analysis and detection module.

[0023] By adopting the technical scheme, the preparation module can use the nitrogen supply system to purge the pipelines of the main flow path module, the rapid backflow module, the analysis and detection module and the tail gas recovery and treatment module, effectively remove the residual gas in the pipelines, avoid polluting the sample gas, and test the pipeline sealing at the same time, thereby improving the safety and stability of the system. The calibration module passes the zero point gas and the range gas into the analysis and detection module respectively, realizes the calibration of the zero point and the range of the analysis and detection module, and significantly improves the accuracy and reliability of the analysis and detection.

[0024] Preferably, it further comprises a pretreatment box, an electric heat tracing cable and a steam heat tracing module, the rapid backflow module is located in the pretreatment box, the main flow path module is arranged in the pretreatment box, the electric heat tracing cable is used to heat the resin gas in the main flow path module exposed outside the pretreatment box, and the steam heat tracing module is used to heat the resin gas in the pretreatment box.

[0025] By adopting the technical scheme, the electric heat tracing cable and the steam heat tracing module jointly ensure that the temperature of the resin gas in the main flow path module is always higher than the dew point temperature, effectively prevent the gas from condensing into liquid, avoid pipeline blockage, and improve the stability and reliability of the system. The electric heat tracing cable is used to heat the exposed part of the main flow path module, and the steam heat tracing module is used to heat the main flow path module in the pretreatment box, and the combination of the two can comprehensively guarantee the temperature requirement of the resin gas and ensure the continuity and accuracy of the analysis and detection process.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. The rapid backflow module can divert part of the resin gas in the main flow path to the tail gas recovery and treatment module, effectively improve the gas flow rate, shorten the time to reach the analyzer, reduce the detection error, and improve the detection accuracy of the online analysis system;

[0028] 2. The purge unit blows nitrogen into the detection device through the nitrogen supply system, performs pressure reduction operation on the resin gas, effectively improves the safety and stability of the system, avoids the risk of explosion caused by excessive pressure, and ensures that the detection device can accurately analyze and detect the resin gas;

[0029] 3. The heat preservation unit and the electric heat tracing cable are used to heat and heat preservation of the gas sample, effectively prevent the gas from condensing into liquid, avoid pipeline blockage, ensure the stability and reliability of the system;

[0030] 4. The safety protection measures such as the flame arrester, the buffer and the purge unit are integrated, which significantly improves the safety of the system, reduces the risk of explosion, optimizes the working environment of the analyzer, and enhances the stability of the overall system. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a flow chart of an online analysis system applied to a high-performance resin production line according to Embodiment 1 of the present application.

[0032] Figure 2 is a flow chart of a tail gas recovery and treatment module of the analysis system.

[0033] Figure 3 is a flow chart of an online analysis system applied to a high-performance resin production line according to Embodiment 2 of the present application.

[0034] Figure 4 is a structural schematic diagram for showing a flow splitting assembly.

[0035] Figure 5 is a sectional view along a symmetry plane of the flow splitting assembly.

[0036] Figure 6 is an exploded view showing a partition plate.

[0037] Figure 7 is a flow chart of an online analysis system applied to a high-performance resin production line according to Embodiment 3 of the present application.

[0038] Figure 8 is a flow chart of an online analysis system applied to a high-performance resin production line according to Embodiment 4 of the present application.

[0039] Figure 9 is a flow chart of an online analysis system applied to a high-performance resin production line according to Embodiment 5 of the present application.

[0040] BRIEF DESCRIPTION OF REFERENCE NUMERALS: 1, sampling module; 11, sampling probe; 12, double-layered clamping sleeve; 2, main flow path module; 3, rapid reflux module; 31, reflux pipeline; 32, first flow meter; 33, one-way valve; 34, on-off valve; 4, analysis and detection module; 41, detection device; 42, purging unit; 5, tail gas recovery and treatment module; 51, flame arrester; 52, jet pump; 53, buffer; 6, flow splitting assembly; 61, centrifugal cover shell; 611, distribution space; 612, guide cavity; 62, impeller; 63, distribution adjusting member; 64, driving motor; 65, cover plate; 631, partition plate; 632, first connecting pipeline; 633, second connecting pipeline; 7, preparation module; 8, calibration module; 81, range gas passage; 82, zero-point gas passage; 91, pretreatment box body; 92, electric heat tracing cable; 93, steam heat tracing module; 94, pressure stabilizing module. DETAILED DESCRIPTION

[0041] The above description will be further illustrated by the following Figures 1-9The technical solutions in the embodiments of the present application are clearly and completely described, and the described embodiments are only possible technical implementations of the present application, not all possible implementations. Those skilled in the art can obtain other embodiments by combining the embodiments of the present application without creative labor, and these embodiments are also within the protection scope of the present application.

[0042] The inventor of the present application finds that because the flow rate of the sampled resin gas is greater than the required gas flow rate of the detection analyzer, the flow rate of the sampled resin gas in the pipeline is slow, so that the sample entering the detection analyzer is the sample several minutes ago, and the sample result detected by the detection analyzer has high delay and large error. Therefore, the present application adopts the resin gas in the main flow path module 2 to be branched, and the resin gas in the main flow path module 2 is branched to the tail gas recovery processing module 5 through the rapid reflux module 3, so as to effectively improve the gas flow rate, shorten the time to reach the analyzer, reduce the detection error, and thus improve the detection accuracy of the online analysis system.

[0043] Embodiment 1

[0044] The embodiment of the present application discloses an online analysis system applied to a high-performance resin production line.

[0045] Reference Figure 1 , Figure 2 The online analysis system applied to the high-performance resin production line includes a sampling module 1, a main flow path module 2, a rapid reflux module 3, an analysis detection module 4, and a tail gas recovery processing module 5. The sampling module 1 is inserted into a resin gas generating and circulating device, and the resin gas is transported to the analysis detection module 4 through the main flow path module 2. The analysis detection module 4 detects and analyzes the resin gas. The two ends of the rapid reflux module 3 are connected with the main flow path module 2 and the tail gas recovery processing module 5 respectively, so as to branch part of the resin gas in the main flow path module 2 to the tail gas recovery processing module 5. The analysis detection module 4 is connected with the tail gas recovery processing module 5, and the resin gas after detection and analysis is recovered and processed.

[0046] The resin gas in the main flow path module 2 is branched to the tail gas recovery processing module 5 through the rapid reflux module 3, so as to reduce the residence phenomenon of the resin gas in the pipeline of the main flow path module 2, accelerate the flow rate of the resin gas in the pipeline of the main flow path module 2, shorten the time to reach the analyzer, reduce the detection error, and thus improve the detection accuracy of the online analysis system.

[0047] Specifically, as Figure 1As shown, the sampling module 1 includes a sampling probe 11, the front end of which can be inserted into a resin gas generation flow device, which in this embodiment can be a resin reaction device or a resin gas conveying pipeline. The sampling probe 11 is connected to the pipeline in the main flow path module 2 through a double-layer sleeve 12. The double-layer sleeve 12 can be made of metal or high-strength plastic material, and this connection ensures the sealing during the collection of the gas sample, prevents external impurities from entering the pipeline, and ensures the purity of the gas sample.

[0048] Specifically, as shown in Figure 1 The pipeline of the main flow path module 2 is sequentially connected in series with a ball valve BV02, a filter TF02, a filter BF01, and a flow meter FI02. The rapid backflow module 3 includes a backflow pipeline 31, a first flow meter 32, a one-way valve 33, and an on-off valve 34. The two ends of the backflow pipeline 31 are respectively connected to the filter BF01 on the main flow path module 2, and the other end is connected to the tail gas recovery and treatment module 5. The first flow meter 32, the one-way valve 33, and the on-off valve 34 are all connected in series in the rapid backflow module 3.

[0049] Among them, the first flow meter 32 can be selected as a turbine flow meter or an electromagnetic flow meter, and its installation position needs to be ensured not to interfere with the main gas flow. The selection of the one-way valve 33 and the on-off valve 34 needs to consider high-temperature resistance and rapid response performance, so as to ensure that the gas sample can be divided into the tail gas recovery and treatment module 5 in a short time.

[0050] Specifically, as shown in Figure 1 The analysis and detection module 4 includes a detection device 41 and a purge unit 42. The detection device 41 in this embodiment is an oxygen analyzer. The inlet end of the detection device 41 is connected to the end of the pipeline in the main flow path module 2, and the outlet end is connected to the tail gas recovery and treatment module 5 through a pipeline, so that the resin gas after detection and analysis flows to the tail gas recovery and treatment module 5 for treatment.

[0051] The purge unit 42 is connected to the detection device 41 and a nitrogen supply system. The purge unit 42 includes but is not limited to one of a fan and a gas pump. Nitrogen is blown into the detection device 41 and backflows into the purge unit 42 through a pipeline. Ball valves BVF05-54 and a pressure reducing valve PR01 are connected in series on the pipeline between the purge unit 42 and the nitrogen supply system. The purge unit 42 blows nitrogen into the detection device 41 to perform pressure reduction operation on the resin gas, effectively improving the safety and stability of the system, avoiding the risk of explosion caused by excessive pressure, and ensuring that the detection device 41 can accurately analyze and detect the resin gas. The purge unit 42 can be provided with multiple nozzles to ensure that the nitrogen can be uniformly distributed, thereby playing a good pressure reduction role.

[0052] Specifically, as shown in Figure 2The tail gas recovery processing module 5 includes a flame arrester 51, a jet pump 52, and a buffer 53. The flame arrester 51 is connected in series on a branch pipe of the tail gas recovery processing module. The jet pump 52 and the buffer 53 are connected in series on the pipe and are both connected with a nitrogen supply system. The buffer 53 is a PTFE buffer tank. A ball valve BVF05-54 and a pressure reducing valve PR04 are connected in series on a pipe between the buffer 53 and the nitrogen supply system. A ball valve BVF05-54 and a pressure reducing valve PR04 are connected in series on a pipe between the jet pump 52 and the nitrogen supply system. The jet pump 52 pressurizes the resin gas. The tail gas recovery processing module 5 is connected with a flare device at the end for burning the resin gas. The core component of the flame arrester 51 is a flame arrester core composed of multiple layers of metal mesh, which has good flame retardant performance. The nozzle of the jet pump 52 is designed to consider the matching of gas flow and pressure. The buffer 53 is made of rubber material or spring structure to effectively weaken the vibration caused by tail gas fluctuation. The outlet of the return pipe 31 is connected with a pipe downstream of the jet pump 52, so that the resin gas in the rapid return module 3 enters the tail gas recovery processing module 5. The outlet of the analysis and detection module 4 is connected with a pipe upstream of the buffer 53, so that the resin gas in the analysis and detection module 4 enters the tail gas recovery processing module 5.

[0053] The implementation principle of the embodiment is that: the representative sample is collected by the sampling module 1, the gas sample is transported to the analysis and detection module 4 for detection and analysis by the main flow path module 2, and part of the gas sample is effectively shunted to the tail gas recovery processing module 5 by the rapid return module 3, so as to improve the gas sample transmission efficiency and detection precision. At the same time, the overall safety and stability of the system are improved by the safety devices such as the flame arrester 51 and the buffer 53.

[0054] Embodiment 2

[0055] As shown in Figure 3 , the difference between the embodiment and embodiment 1 is that a shunt assembly 6 is connected on a pipe upstream of the inlet end of the detection device 41.

[0056] Specifically, as shown in Figure 4 , Figure 5 and Figure 6As shown, the flow splitting assembly 6 includes a centrifugal casing 61, an impeller 62, and a distribution adjusting member 63. The centrifugal casing 61 is open on one side and forms a disc-shaped space inside. The pipe of the main flow path module 2 is connected to the centrifugal casing 61, so that the resin gas flows into the centrifugal casing 61. The impeller 62 is fixedly arranged on the output shaft of the driving motor 64 and arranged in the disc-shaped space, so that the central opening of the impeller 62 is opposite to the pipe outlet of the main flow path module 2, so that when the impeller 62 rotates, the resin gas is sucked into the negative pressure zone formed at the center. The centrifugal casing 61 is provided with a cover plate 65, which is screwed on the centrifugal casing 61 to realize the detachable connection of the cover plate 65 and the centrifugal casing 61. The cover plate 65 blocks the opening of the centrifugal casing 61, so that the disc-shaped space forms a closed space.

[0057] Specifically, as shown in Figure 5 , Figure 6 The outer edge of the impeller 62 and the inner side wall of the centrifugal casing 61 form a distribution space 611. The distribution adjusting member 63 is arranged in the distribution space 611 and divides the distribution space 611 into two guide cavities 612 in communication with the impeller 62. The distribution adjusting member 63 in this embodiment includes two partition plates 631, both of which are rubber plates. The two partition plates 631 are slidingly arranged in the distribution space 611, and each partition plate 631 is arranged along the radial direction of the centrifugal casing 61.

[0058] Specifically, as shown in Figure 3 , Figure 6 The first connecting pipe 632 and the second connecting pipe 633 are fixedly arranged on the centrifugal casing 61 and oppositely arranged along the circumferential direction of the centrifugal casing 61. The first connecting pipe 632 is connected to the inlet end of the detection device 41, and the second connecting pipe 633 is connected to the pipe downstream of the outlet end of the detection device 41. The first connecting pipe 632 is in communication with one guide cavity 612, and the second connecting pipe 633 is in communication with the other guide cavity 612. The two partition plates 631 are located on both sides of the connecting line of the first connecting pipe 632 and the second connecting pipe 633. When the cover plate 65 is fixedly installed on the centrifugal casing 61, the cover plate 65 can extrude the partition plates 631 to be fixedly attached to the inner wall of the centrifugal casing 61, thereby completing the fixation of the partition plates 631.

[0059] The implementation principle of embodiment 2 is that when the resin gas enters the detection device 41, the impeller 62 rotates and forms a negative pressure zone at the central opening. The resin gas enters the negative pressure zone and is uniformly dispersed into the edge distribution space 611 under the centrifugal action of the impeller 62. The resin gas enters the first connecting pipe 632 and the second connecting pipe 633 along the respective corresponding guide cavities 612, realizes the re-distribution of the resin gas entering the detection device 41 to the pipeline downstream of the outlet end of the detection device 41, reduces the stagnation phenomenon of the resin gas in the pipeline at the inlet end of the detection device 41, increases the speed of the resin gas entering the detection device 41, shortens the time of the resin gas reaching the detection device 41, reduces the detection error, and improves the detection accuracy of the online analysis system.

[0060] When adjusting the ratio of the amount of gas entering the first connecting pipe 632 and the second connecting pipe 633, the positions of the two baffles 631 in the distribution space 611 are changed to adjust the volume ratio of the two guide cavities 612, and then the gas distribution ratio is adjusted. By sealing the centrifugal shell 61 with the cover plate 65 and fixing the two baffles 631, the flexibility of adjusting the gas distribution ratio is improved.

[0061] Embodiment 3

[0062] As shown in Figure 7 The difference between this embodiment and embodiment 1 is that a preparation module 7 and a calibration module 8 are additionally provided. The preparation module 7 is connected with the nitrogen supply system and the main flow path module 2. A one-way valve CV02, a pressure reducing valve PR01 and a ball valve BVF05-54 are connected in series on the pipeline between the preparation module 7 and the main flow path module 2. Nitrogen is introduced into the pipelines of the main flow path module 2, the rapid reflux module 3, the analysis and detection module 4 and the tail gas recovery and treatment module 5 to purge the pipelines of the main flow path module 2, the rapid reflux module 3, the analysis and detection module 4 and the tail gas recovery and treatment module 5 by conveying nitrogen, so as to ensure that the residual gas in the pipelines of each module is completely removed.

[0063] The calibration module 8 includes a range gas passage 81 and a zero point gas passage 82. The pipeline in the range gas passage 81 is connected with a three-way ball valve BXV02 connected in series on the pipeline of the main flow path module 2. The range gas is usually used for calibrating gas analysis instruments to ensure that they can accurately measure target gas. The range gas is a standard gas with a known concentration. By comparing the difference between the measurement result and the known concentration, the accuracy and precision of the instrument are determined.

[0064] In this embodiment, nitrogen from the nitrogen supply system is used as the zero-point gas. The pipe in the zero-point gas passage 82 is connected to the detection device 41. The zero-point gas is introduced into the detection device 41 to calibrate its zero point, ensuring accurate measurement of gas concentrations close to zero. The zero-point gas passage 82 also allows the zero-point gas and the range gas to be introduced into the analysis and detection module 4 respectively, calibrating the zero point and range of the analysis and detection module 4.

[0065] Example 4

[0066] like Figure 8 As shown, the difference between this embodiment and embodiment 3 is that the detection device 41 in this embodiment is an infrared analyzer. The zero-point gas in this embodiment is high-purity argon. The pipelines in the range gas passage 81 and the zero-point gas passage 82 are first connected by a three-way ball valve BXV02, and then connected by a pipeline to the three-way ball valve BXV02 on the pipeline of the main flow module 2, so that the zero-point gas and the range gas enter the detection device 41 to calibrate the zero point and range of the detection device 41.

[0067] Example 5

[0068] like Figure 9 As shown, the difference between this embodiment and Embodiment 1 is the addition of a pretreatment chamber 91, an electric heat tracing cable 92, and a steam heat tracing module 93. The rapid return module 3 is located inside the pretreatment chamber 91, the main flow module 2 passes through the pretreatment chamber 91, the electric heat tracing cable 92 insulates the resin gas inside the exposed main flow module 2 of the pretreatment chamber 91, and the steam heat tracing module 93 is used to insulate the resin gas inside the pretreatment chamber 91. All pipes passing through the pretreatment chamber 91 are connected via through-plate connectors B.

[0069] The pretreatment chamber 91 can be made of heat-insulating material, with an internal insulation layer. The electric heating cable 92 uses copper wire and is wrapped around the outside of the main flow module 2, maintaining the temperature of the gas sample by heating with current. The steam heating module 93 includes a steam inlet, a steam heating cable, and a steam condensate outlet. High-temperature steam enters the pretreatment chamber 91 through the inlet, and the steam heating cable is located inside the pretreatment chamber 91. The generated steam condensate is discharged from the steam condensate outlet, effectively preventing the gas sample from condensing into liquid and clogging the pipeline. The electric heating cable 92 is used to ensure that the sample gas temperature of the instrument pipeline is higher than the dew point temperature, thereby ensuring that the sample collected by the instrument pipeline is consistent with the initial value, ultimately ensuring the continuity and reliability of the detection system and preventing liquid condensation in the gas inside the pipe.

[0070] The pretreatment chamber 91 is equipped with a pressure stabilizing module 94, which is connected to an external airflow delivery system to pass airflow through the pretreatment chamber 91 and maintain the pretreatment chamber 91 in a slightly positive pressure state.

[0071] The implementation principle of the embodiment is that the temperature of the gas sample is effectively maintained through the arrangement of the pretreatment box 91 and the heat preservation module, the condensation phenomenon is avoided, and the stability and reliability of the system are improved, thereby providing more reliable guarantee for gas analysis in the high-performance resin production process.

[0072] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: any equivalent changes made on the basis of the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. An on-line analysis system applied to a high-performance resin production line, characterized in that: The device comprises a sampling module (1), a main flow path module (2), a rapid backflow module (3), an analysis and detection module (4), and a tail gas recovery and treatment module (5). The sampling module (1) can be inserted into a resin gas generation flow device and can deliver resin gas to the analysis and detection module (4) through the main flow path module (2). The analysis and detection module (4) can detect and analyze resin gas. The rapid backflow module (3) is connected to the main flow path module (2) and the tail gas recovery and treatment module (5) at both ends, so that part of the resin gas in the main flow path module (2) can be diverted to the tail gas recovery and treatment module (5). The analysis and detection module (4) is connected to the tail gas recovery and treatment module (5) to recover and treat the analyzed resin gas. The analysis and detection module (4) comprises a detection device (41) and a purging unit (42). The inlet end of the detection device (41) is connected to the main flow path module (2), and the outlet end is connected to the tail gas recovery and treatment module (5). The purging unit (42) is connected to the detection device (41) and a nitrogen supply system to blow nitrogen into the detection device (41) for pressure reduction of the resin gas. A diversion assembly (6) is connected to the pipeline upstream of the inlet end of the detection device (41). The diversion assembly (6) is connected to the pipeline downstream of the outlet end of the detection device (41). The diversion assembly (6) can divert the resin gas flowing from the main flow path module (2) into the detection device (41) to the pipeline downstream of the outlet end of the detection device (41). The diversion assembly (6) comprises a centrifugal housing (61), an impeller (62), and a distribution adjusting member (63). The impeller (62) is rotatably arranged in the centrifugal housing (61). The pipeline of the main flow path module (2) is connected to the centrifugal housing (61) and opposite to the central opening of the impeller (62). The outer edge of the impeller (62) and the inner side wall of the centrifugal housing (61) form a distribution space (611). The distribution adjusting member (63) is arranged in the distribution space (611) and divides the distribution space (611) into two guide cavities (612) in communication with the impeller (62). The distribution adjusting member (63) can adjust the volume ratio of the two guide cavities (612). The pipeline of the inlet end of the detection device (41) is connected to one of the guide cavities (612), and the pipeline of the outlet end of the detection device (41) is connected to the other guide cavity (612) to divert the resin gas flowing from the main flow path module (2) into the detection device (41). The distribution adjusting piece (63) comprises two partitions (631), the two partitions (631) are slidingly arranged in the distribution space (611), the positions of the two partitions (631) can be adjusted, a cover plate (65) is detachably connected to the centrifugal cover (61), the cover plate (65) can block the centrifugal cover (61) and tightly fix the partitions (631) in the distribution space (611).

2. The on-line analysis system for use in a high performance resin production line according to claim 1, characterized in that: The rapid reflux module (3) comprises a reflux pipeline (31), a first flowmeter (32), a one-way valve (33) and a switch valve (34), two ends of the reflux pipeline (31) are connected with the main flow path module (2) and the tail gas recovery treatment module (5) respectively, and the first flowmeter (32), the one-way valve (33) and the switch valve (34) are all connected in series in the rapid reflux module (3).

3. The on-line analysis system for use in a high performance resin production line according to claim 1, characterized in that: The sampling module (1) comprises a sampling probe (11), the front end of the sampling probe (11) can be inserted into a resin gas generation circulation device, and the sampling probe (11) is connected with a pipeline in the main flow path module (2) through a double-layer clamping sleeve (12).

4. The on-line analysis system for use in a high performance resin production line according to claim 1, characterized in that: The tail gas recovery treatment module (5) comprises a flame arrester (51), a jet pump (52) and a buffer (53), the flame arrester (51) is connected in series on a branch pipeline of the tail gas recovery treatment module (5), the jet pump (52) and the buffer (53) are connected in series on a pipeline and are both connected with a nitrogen supply system, so that the resin gas is pressurized, and the tail gas recovery treatment module (5) is connected with a flare device, so that the resin gas can be treated.

5. The on-line analysis system for use in a high performance resin production line according to claim 1, characterized in that: The preparation module (7) and the calibration module (8) are connected with the nitrogen supply system and the main flow path module (2), so that the pipelines of the main flow path module (2), the rapid reflux module (3), the analysis and detection module (4) and the tail gas recovery treatment module (5) can be purged by conveying nitrogen; The calibration module (8) is connected with the main flow path module (2), so that zero point gas and range gas can be respectively introduced into the analysis and detection module (4), and the zero point and the range of the analysis and detection module (4) can be calibrated.

6. The on-line analytical system for use in high performance resin production line according to claim 1, characterized in that: The pretreatment box (91), the electric heat tracing cable (92) and the steam heat tracing module (93) are further included, the rapid reflux module (3) is located in the pretreatment box (91), the main flow path module (2) is arranged in the pretreatment box (91), the electric heat tracing cable (92) is used for heat preservation of the resin gas in the main flow path module (2) exposed outside the pretreatment box (91), and the steam heat tracing module (93) is used for heat preservation of the resin gas in the pretreatment box (91).

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