CN120369640A - Modularized online analysis instrument for controlling technological process - Google Patents
Modularized online analysis instrument for controlling technological processInfo
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- CN120369640A CN120369640A CN202510612037.8A CN202510612037A CN120369640A CN 120369640 A CN120369640 A CN 120369640A CN 202510612037 A CN202510612037 A CN 202510612037A CN 120369640 A CN120369640 A CN 120369640A
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Abstract
本发明属于在线分析仪表技术领域，具体公开一种用于工艺过程控制的模块化在线分析仪表，包括模块化取样探头、光纤和变送器；模块化取样探头与工艺管道相连，包括探头本体和连接在探头本体下方的取样管，取样管内具有上升通道和下降通道，上升通道和下降通道的一端设于取样管端部形成取样口，另一端贯通至探头本体内腔形成测量池，测量池的两端分别连接发射单元光纤接头和接收单元光纤接头；变送器的检测模块包括至少一个光源和检测器，光源通过光纤连接发射单元光纤接头，检测器通过光纤连接接收单元光纤接头。该仪表省略了样品预处理系统，显著缩短了滞后时间，降低了设备成本和维护复杂性，同时减少了废气排放，实现了绿色环保和高效检测。
The present invention belongs to the technical field of online analytical instruments, and specifically discloses a modular online analytical instrument for process control, including a modular sampling probe, an optical fiber and a transmitter; the modular sampling probe is connected to a process pipeline, including a probe body and a sampling tube connected below the probe body, and the sampling tube has an ascending channel and a descending channel, one end of the ascending channel and the descending channel is arranged at the end of the sampling tube to form a sampling port, and the other end is connected to the inner cavity of the probe body to form a measuring pool, and the two ends of the measuring pool are respectively connected to the optical fiber connector of the transmitting unit and the optical fiber connector of the receiving unit; the detection module of the transmitter includes at least one light source and a detector, the light source is connected to the optical fiber connector of the transmitting unit through an optical fiber, and the detector is connected to the optical fiber connector of the receiving unit through an optical fiber. The instrument omits a sample pretreatment system, significantly shortens the lag time, reduces equipment cost and maintenance complexity, and reduces exhaust gas emissions, thereby achieving green environmental protection and efficient detection.
Description
Technical Field
The invention relates to the technical field of online analysis meters, in particular to a modularized online analysis meter for controlling a technological process.
Background
The traditional online analysis instrument is widely applied to the technical process control of petrochemical industry and the like, but the working mode of the traditional online analysis instrument has a plurality of defects. In particular, conventional on-line analytical instruments require that the process gas be directed from the sampling probe and transported through a sample transfer line to an analytical cabinet located remotely from the sampling point. In analytical cabinets, the samples are subjected to a complex series of pretreatment operations including filtration, pressure and temperature regulation, flow control, and lag time reduction via bypass. The process not only leads to a significant increase in lag time, but also causes a number of problems due to exhaust emissions generated during sample processing and exhaust emissions after the meter monitors for venting.
Many process media have hazardous characteristics such as toxicity, flammability, explosiveness, etc., and the transmission, emission and collection of waste gas not only increase the risk of environmental pollution, but also cause waste of resources and increase of construction and maintenance costs. In addition, in order to ensure a constant sample temperature and prevent condensation, the sample pretreatment system of the conventional on-line analysis meter generally needs to be installed in a heat-insulating cabinet. In the chemical industry field, because of explosion-proof requirement, the cabinet needs to be equipped with an explosion-proof electric heater, a lamp, a power supply and a signal junction box, and a sample transmission pipeline also needs to adopt explosion-proof electric tracing measures. According to different environmental conditions, some cabinets are also required to be equipped with devices such as an explosion-proof fan, an explosion-proof air conditioner and the like. When a plurality of meters are installed in a centralized way, an analysis cabin with a larger size is also required to be configured, and an explosion-proof air conditioner, an explosion-proof fan, an explosion-proof gas detector, a safety alarm control system and the like are installed in the cabin. These additional equipment not only increases the equipment investment cost, but also greatly increases the later maintenance workload and maintenance cost.
In the process of constructing an international advanced green petrochemical industry system, the petrochemical industry is required to be transformed into an efficient, low-carbon and circulating green development mode. The technical problems existing in the traditional online analysis instrument obviously do not accord with the development trend of the industry, and are unfavorable for reducing resource waste, reducing environmental pollution and improving production efficiency and safety. Thus, there is a need for a modular on-line analytical instrument for process control.
Disclosure of Invention
It is an object of the present invention to provide a modular on-line analytical instrument for process control that solves the above-mentioned problems of the prior art.
The modularized online analysis instrument for controlling the technical process comprises a modularized sampling probe, optical fibers and a transmitter, wherein the modularized sampling probe is connected with a technical pipeline and comprises a probe body and a sampling tube connected below the probe body, a lifting channel and a descending channel are arranged in the sampling tube, one ends of the lifting channel and the descending channel are arranged at the end of the sampling tube to form a sampling port, the other ends of the lifting channel and the descending channel penetrate through the inner cavity of the probe body to form a measuring pool, two ends of the measuring pool are respectively connected with an emitting unit optical fiber connector and a receiving unit optical fiber connector, the transmitter comprises a detection module composed of at least one light source and a detector, the light source is connected with the emitting unit optical fiber connector through one optical fiber, and the detector is connected with the receiving unit optical fiber connector through the other optical fiber.
In some alternative embodiments of the invention, a light transmission window is hermetically arranged at the two ends of the measuring cell at the positions of connecting the optical fiber connectors of the transmitting unit and the optical fiber connectors of the receiving unit.
In some alternative embodiments of the invention, the light-transmitting window is a sapphire window detachably mounted at two ends of the probe body.
In some alternative embodiments of the invention, a gas port is connected to one side of the probe body, and the gas port is connected to the measuring cell through an internal pipe.
In some alternative embodiments of the present invention, the modular sampling probe further comprises a root valve mounted to the sampling tube proximate the sampling port.
In some alternative embodiments of the invention, an explosion-proof heater is mounted on the probe body, the explosion-proof heater including a heating element, a temperature sensor, and a heater housing.
In some optional embodiments of the present invention, a mounting flange is provided at a position where the probe body is connected to the sampling tube, the sampling tube is connected to the mounting flange through a ferrule sealing joint, one end of the ferrule sealing joint is connected to the mounting flange through a bolt, the other end of the ferrule sealing joint is connected to the sampling tube through a sealing ferrule, and the ferrule sealing joint adopts a double ferrule structure.
In some optional embodiments of the present invention, the sealing sleeve is made of elastic material, and is pressed against the outer wall of the sampling tube in a surrounding manner through elastic deformation of the sealing sleeve.
In some alternative embodiments of the present invention, the transmitter includes an explosion proof housing, a display module, a power module, an input/output module, a control module, and a detection module.
In some optional embodiments of the present invention, the transmitter further comprises an analysis module, the analysis module configures different functional sub-modules according to the detection requirement, and the functional sub-modules comprise at least one of an infrared module, an ultraviolet module and a laser module.
Compared with the prior art, the invention at least discloses the following beneficial effects:
the modularized online analysis instrument does not need to take out a sample, and omits a sample pretreatment system, so that the lag time is greatly shortened, and the equipment investment cost and the operation and maintenance complexity are obviously reduced. Meanwhile, as the process medium does not need to be extracted, the waste gas and waste liquid emission generated in the sample treatment process of the traditional online analyzer is avoided, the environmental pollution is reduced, the cost is saved, and the environment protection is realized. In addition, the modularized online analysis instrument does not need other auxiliary equipment, so that equipment investment is further reduced, the complexity of operation and maintenance is reduced, and a plurality of technical defects caused by complex equipment and systems of the traditional online analysis instrument are effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a modular on-line analytical instrument for process control according to the present invention;
FIG. 2 is a block diagram II of a modular on-line analytical instrument for process control according to the present invention;
FIG. 3 is a schematic view of the structure of a field modular probe in the modular on-line analysis meter of the present invention;
FIG. 4 is a cross-sectional view of a field modular probe in a modular on-line analysis meter of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a cross-sectional view of the field modular probe of the present invention in a mated condition with a process piping;
FIG. 7 is a schematic diagram of a modular on-line analytical instrument for process control according to the present invention;
fig. 8 is a block diagram of a conventional on-line analyzer.
The device comprises a 1-module sampling probe, a 2-fiber, a 3-transmitter, a 4-process pipeline, a 11-probe body, a 12-transmitting unit fiber connector, a 13-receiving unit fiber connector, a 14-clamping sleeve sealing connector, a 15-mounting flange, a 16-sampling tube, a 17-sampling port, a 18-explosion-proof heater, a 19-window compression nut, a 20-first window sealing gasket, a 21-sapphire window, a 22-second window sealing gasket, a 23-measuring cell, a 24-sealing clamping sleeve, a 25-ascending channel, a 26-descending channel, a 27-standard gas port, a 28-root valve, a 31-explosion-proof housing, a 32-display module, a 33-power module, a 34-input/output module, a 35-control module, a 36-detection module, a 37-light source, 38-detector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The conventional online analyzer has various problems, as shown in fig. 8, in which the process gas needs to be led out from the sampling probe, and is transported to an analysis cabinet far away from the sampling point through a sample transporting pipeline, the sample is filtered by a sample pretreatment system in the analysis cabinet, the pressure, the temperature and the flow are regulated, and the sample is sent to the online analyzer after a series of operations such as reducing the lag time through a bypass, and then is emptied through an emptying pipeline. The process has long delay time, and the waste gas generated by the bypass needs to be discharged in the sample treatment process, the tail gas also needs to be discharged after the instrument monitors the emptying, and many process mediums are toxic, flammable and explosive gases and liquids, and the transmission, the discharge and the collection of the waste gas cause the increase of environmental pollution, resource waste and cost (construction and maintenance).
The sample pretreatment system of the traditional online analyzer aims to ensure the temperature of the medium to be measured to be constant, prevent coagulation, prevent the medium from generating phase change to cause separation, prevent high-temperature polymerization, prevent low-temperature crystallization and the like. In order to ensure the cleanliness of the sample, the water is required to be removed to prevent condensation in the instrument, the temperature and the pressure of the sample are required to be controlled for convenient transmission and measurement, the temperature of the component can be kept low due to the requirement of high temperature reduction, the component can be kept warm for transmission at low temperature to prevent the change of the components of the medium to be tested, the pressure of the medium to be tested is required to be reduced for convenient and safe transmission, the pressure of the low pressure is required to be increased to be conveniently transmitted to the sample pretreatment system, and the common engineering conditions such as instrument air, factory nitrogen, desalted water, steam and the like are introduced into the sample pretreatment system to generate a plurality of vulnerable parts and spare parts, which sometimes lead to the complexity, cost and maintenance quantity of the sample pretreatment system to exceed the instrument.
In order to ensure operability of conventional on-line analyzers, the on-line meters and the pretreatment system need to be installed in a thermally insulated cabinet. The chemical industry is the explosion-proof occasion generally, and the rack needs to set up explosion-proof electric heater, lamps and lanterns, power and signal junction box, and sample transmission pipeline needs explosion-proof electric tracing, according to environmental condition, and some racks set up explosion-proof fan, explosion-proof air conditioner, and a plurality of instruments are installed together and need dispose the great analysis cabin of size, and the analysis cabin is for personnel, equipment safety needs installation explosion-proof air conditioner, explosion-proof fan, explosion-proof gas detector to and safety alarm control system.
In summary, the conventional online analyzer has a plurality of problems, and in order to solve the problems, the embodiment of the invention provides a modularized online analyzer, which can avoid a plurality of defects of the conventional online analyzer through a structural innovation design. The modularized online analysis instrument does not need to extract a process medium, thereby greatly shortening the lag time, reducing the discharge of waste liquid and waste gas, saving the cost and realizing the aim of green environmental protection. Meanwhile, as a complex sample pretreatment system is not required, the modularized online analysis instrument reduces the equipment investment cost and the operation and maintenance complexity, reduces the equipment occupation space and improves the safety and the reliability. The characteristics enable the modularized online analysis instrument to be highly compatible with the national target for promoting the green transformation of the petrochemical industry, and provide powerful support for realizing an efficient, low-carbon and circulating green petrochemical industry system.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1 to 6, the invention provides a modularized online analysis instrument for controlling a process, which comprises a modularized sampling probe 1, an optical fiber 2 and a transmitter 3. The modularized sampling probe 1 is connected with a process pipeline 4 through a mounting flange 15 and is connected with an optical fiber 2 through an optical fiber connector, the optical fiber 2 is used as a signal transmission medium, one end of the optical fiber is connected with a light source 37 and a detector 38 in a transmitter 3, the other end of the optical fiber is connected with a transmitting unit and a receiving unit of the modularized sampling probe 1, the transmitter 3 is used as a core processing unit and is connected with the modularized sampling probe 1 through the optical fiber 2 to finish signal transmission, signal reception and data processing, and data are remotely transmitted to a control center.
In the above embodiment, the modularized sampling probe 1 comprises a probe body 11 and a sampling tube 16 connected below the probe body 11, wherein the sampling tube 16 is used for medium flow guiding, the interior of the sampling tube 16 is divided into an ascending channel 25 and a descending channel 26, one ends of the ascending channel 25 and the descending channel 26 are arranged at the end part of the sampling tube 16 to form a sampling port 17, and the other ends penetrate through the inner cavity of the probe body 11 to form a measuring pool 23. The sampling tube 16 is connected with the probe body 11, the ascending channel 25 is connected with the inner cavity of the probe body 11, the descending channel 26 is also connected with the inner cavity of the probe body 11, and the positions where the ascending channel 25, the descending channel 26 and the probe body 11 are connected form a cavity to form the measuring cell 23. The two ends of the measuring cell 23 are respectively connected with the transmitting unit optical fiber connector 12 and the receiving unit optical fiber connector 13, which are used for connecting the optical fiber 2, the transmitting unit at one end of the measuring cell 23 is connected with the light source 37 in the transmitter 3 through the optical fiber 2, and the receiving unit at the other end of the measuring cell 23 is connected with the detector 38 in the transmitter 3 through the optical fiber 2. The light of the transmitting unit passes through the measuring cell 23 to reach the receiving unit, and irradiates the medium in the measuring cell 23 to finish on-line detection.
In one embodiment, the sampling tube 16 is in sealed connection with the process pipeline 4, the medium to be measured in the process pipeline 4 enters the measuring tank 23 through the ascending channel 25 of the sampling tube 16 and then returns to the process pipeline 4 through the descending channel 26, the two ends of the measuring chamber of the modular sampling probe 1 are respectively provided with a transmitting unit and a receiving unit, the light source 37 and the detector 38 in the transmitter 3 are respectively connected with the transmitting unit and the receiving unit through the optical fiber 2, the light emitted from the transmitting unit passes through the measuring chamber and is absorbed by the gas to be measured, the unabsorbed light reaches the detector 38 through the receiving unit, the detector 38 determines the content of the component to be measured in the process medium, and the data is displayed and transmitted to the control center through the transmitter 3 to complete the data collection in the process control process.
In one embodiment, the sapphire windows 21 are installed at the positions where the two ends of the measuring cell 23 are connected with the transmitting unit optical fiber connector 12 and the receiving unit optical fiber connector 13, so as to form a seal, and prevent the medium from leaking. Light from the transmitting unit fiber optic connector 12 and the receiving unit fiber optic connector 13 enters and exits the measuring cell 23 through the sapphire window 21, the sapphire window 21 being selected based on its good optical transmission and chemical stability, capable of withstanding the pressure and temperature of the process media. Light emitted by the light source 37 is transmitted to the optical fiber connector 12 of the transmitting unit through the optical fiber 2, then enters the measuring cell 23 through the sapphire window 21, the light passes through a medium in the measuring cell 23, part of the light is absorbed by the gas to be measured, and the light which is not absorbed reaches the optical fiber connector 13 of the receiving unit through the sapphire window 21 and is transmitted to the detector 38 through the optical fiber 2.
In a specific embodiment, the sealing between the measuring cell 23 and the environment is realized by a window sealing gasket, and when the sapphire window 21 is installed, a layer of first window sealing gasket 20 is firstly installed on the sealing surfaces at two ends of the probe body 11, then the sapphire window 21 is installed, then a layer of second window sealing gasket 22 is installed, and finally the window sealing gasket is fastened by a window compression nut 19. By adopting the detachable mounting mode, the windows with different materials can be conveniently selected and mounted according to different measuring media or light sources 37.
In a specific embodiment, a standard gas port 27 is connected to one side of the probe body 11 for introducing standard gas, and the standard gas port 27 is connected to the measuring cell 23 through an internal pipe, so that standard gas can be introduced into the measuring cell 23. In practice, the air port 27 is mainly used for calibrating and verifying the accuracy of the analysis meter. By periodically introducing a standard gas of known concentration, the detector 38 module can be calibrated to ensure the reliability of the measurement results. In addition, the air port 27 is also used for verifying the measurement precision of the analysis instrument, and when the measurement result is abnormal, the error caused by the instrument fault or other reasons can be judged through quick verification of the air port 27. The design not only improves the accuracy of measurement, but also enhances the reliability and maintenance efficiency of the equipment.
In one embodiment, the modular sampling probe 1 further comprises a root valve 28, the root valve 28 being mounted on the sampling tube 16 near the sampling port 17 and being a critical component for controlling the passage of process media into the sampling tube 16. It is connected to the process pipe 4 by a flange or screw thread to allow accurate regulation of the flow of medium into the sampling tube 16. During operation of the device, the root valve 28 can control flow, adapt to different process conditions, and ensure stability and accuracy of the measurement process. In addition, the root valve 28 has an on-off control function, and can cut off or open a medium passage, so that maintenance and calibration operation of equipment are facilitated. In an emergency, the root valve 28 can be quickly closed, cutting off the medium supply, preventing leakage, ensuring the safety of the equipment and the operators. This design not only improves the flexibility and safety of the device, but also reduces maintenance costs and operational risks.
In a specific embodiment, the probe body 11 is provided with an explosion-proof heater 18, and the explosion-proof heater 18 is a key component in the modularized online analysis instrument and is installed on the probe body 11 of the modularized sampling probe 1, and a specific position is close to the measuring cell 23. The structure of the device comprises a heating element, a temperature sensor and a heater shell, wherein the heating element is used for providing heat, the temperature sensor is used for monitoring the temperature in the measuring tank 23 in real time, and the heater shell ensures the safety of the device in flammable and explosive environments. The explosion-proof heater 18 is secured to the probe body 11 by bolts or other mechanical means and is connected to a power module 33 in the transmitter 3 by a cable, and obtains power from the power module 33. Meanwhile, the temperature sensor is connected with a control module 35 in the transmitter 3 through a signal wire, and the control module 35 adjusts the working state of the heater according to the feedback signal of the temperature sensor, so that accurate temperature control is realized. The main function of the explosion-proof heater 18 is to prevent the process medium in the measuring cell 23 from condensing due to temperature drop, maintain the temperature of the medium stable, and ensure the accuracy and stability of measurement. In addition, the heater shell adopts an explosion-proof design, and the explosion-proof design accords with related standards, so that the heater can safely run in dangerous environments, and the safety of equipment and operators is ensured.
In a specific embodiment, the sampling tube 16 is connected with the mounting flange 15 through a clamping sleeve sealing joint 14, the clamping sleeve sealing joint 14 is arranged between the sampling tube 16 and the mounting flange 15 and is used for connecting the sampling tube 16 with the mounting flange 15, specifically, the clamping sleeve sealing joint 14 is used for sealing the sampling tube 16 through a sealing clamping sleeve 24, one end of the sampling tube 16 is inserted into an inner hole of the clamping sleeve sealing joint 14, and the sampling tube 16 is tightly connected with the clamping sleeve sealing joint 14 through the sealing clamping sleeve 24, so that the sealing performance is ensured. The other end of the clamping sleeve sealing joint 14 is connected with a mounting flange 15, and the mounting flange 15 is fixed on the flange of the process pipeline 4 through bolts, so that the whole modularized sampling probe 1 is connected with the process pipeline 4.
In one embodiment, the sealing ferrule 24 is made of an elastic material, and is tightly wrapped around the outer wall of the sampling tube 16 by elastic deformation thereof to form a seal, which effectively prevents leakage of the medium from the gap between the sampling tube 16 and the ferrule sealing joint 14. The material of the ferrule sealing joint 14 and the sealing ferrule 24 is generally of high strength and pressure resistance, capable of withstanding the high pressure medium in the process piping 4. This design ensures that the connection between the sampling tube 16 and the mounting flange 15 does not loosen or leak due to pressure in a high pressure environment.
In one embodiment, the ferrule sealing adapter 14 is a double ferrule structure that facilitates assembly and disassembly of the sampling tube 16. When maintenance or replacement of the coupon 16 is required, it can be quickly removed and reinstalled, improving maintenance efficiency.
It should be understood that in practical application, the modular sampling probe 1 may be configured with flanges of different specifications according to the size of the process pipe 4, so as to meet the installation requirement of the on-site sampling point.
It should also be appreciated that the modular on-line analytical instrument for process control of the present embodiment may configure a single detector 38 or multiple detectors 38 to meet on-site single-component or multi-component analysis requirements according to different analysis requirements.
In the above embodiment, the transmitter 3 is a core component of the modular on-line analysis meter, and its internal structure includes the explosion-proof housing 31, the display module 32, the power module 33, the input/output module 34, the control module 35, and the detection module 36. The explosion-proof housing 31 is used for protecting internal components and ensuring the safety of the equipment in an explosion-proof environment, the display module 32 is used for displaying measurement data and equipment state information, the power supply module 33 is used for providing power support for each module in the transmitter 3, the input/output module 34 is responsible for inputting and outputting data and comprises communication with external equipment, the control module 35 is used for controlling the operation of the whole transmitter 3, processing the data and coordinating the operation of each module, and the detection module 36 comprises a light source 37 and a detector 38 and is used for emitting and receiving light rays and detecting the content of the components to be detected in a process medium.
The light source 37 is connected with the transmitting unit optical fiber connector 12 through the optical fiber 2, light rays emitted by the light source 37 are transmitted to the transmitting unit optical fiber connector 12 of the field modularized probe through the optical fiber 2, the detector 38 is connected with the receiving unit optical fiber connector 13 through the optical fiber 2, and the detector 38 receives the light rays transmitted from the receiving unit optical fiber connector 13 of the field modularized probe through the optical fiber 2. The control module 35 receives and processes the data from the detection module 36, and the processed data is sent to the display module 32 for display through the control module 35 and is remotely transmitted to the control center through the input/output module 34.
In a specific embodiment, the transmitter 3 may be configured with an analysis module, where the analysis module sets different functional sub-modules, such as sub-modules with different principles and functions, including an infrared module, an ultraviolet module, a laser module, etc., and specifically performs single-module or multi-module combination configuration according to requirements, so as to analyze multiple gases, such as CO 2, CO, water, H 2S、SO2、CH4, etc.
The working principle of the embodiment of the invention is as follows:
as shown in fig. 7, the modular on-line analysis meter of the present embodiment, the entire power of the light source 37 is controlled to a particularly narrow area. The exact wavelength of the laser can be fine tuned on the absorption line by altering the temperature or current of the laser. The laser passes through the gas sample and the laser power through the sample is detected as a function of the laser wavelength. When the lasing wavelength exactly coincides with the resonance absorption in the molecule, we see a significant absorption signal.
Principle of laser analysis the intensity of gas absorption depends on the number of molecules, cross-sectional area and optical path length. Thus, the gas concentration can be expressed as:
From this expression we need to distinguish between light absorbed by the molecules and light absorbed by dust and dirt and other factors in the measurement path. To determine the gas concentration, we measure the absorption intensity at a characteristic wavelength and divide it by cross-sectional area and path. The absorption intensity is calculated according to lambert-beer law.
The embodiment of the invention discloses a modularized online analysis instrument for controlling a technological process, which aims to solve the problems of long lag time, complex equipment, high cost, environmental pollution and the like of the traditional online analysis instrument. The meter comprises a modular sampling probe 1, an optical fiber 2 and a transmitter 3. The modularized sampling probe 1 is connected with the process pipeline 4, and a measuring pool 23 is arranged in the modularized sampling probe for directly measuring a process medium, so that sampling transmission and complex pretreatment are not needed, the lag time is remarkably shortened, and the discharge of waste liquid and waste gas is reduced. The transmitter 3 comprises a detection module 36, an analysis module and the like, and can be configured with different functional sub-modules such as infrared, ultraviolet and laser modules according to requirements so as to realize online detection of various gases. The invention has the advantages of compact structure, low cost, simple maintenance, green environmental protection and the like, is suitable for efficient, low-carbon and cyclic green transformation in petrochemical industry and the like, and meets the development target of promoting the green petrochemical industry system in China.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
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| CN202510612037.8A CN120369640A (en) | 2025-05-13 | 2025-05-13 | Modularized online analysis instrument for controlling technological process |
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