A distributed online detection shelter system

Abstract

The application discloses a kind of distributed online detection shelter systems, including online detection positive pressure shelter laboratory, sample pre-treatment unit, microfluidic transport unit, sample intelligent timing injection management unit, online chemical analysis unit and control system, sample pre-treatment unit includes multiple pre-treatment units, multiple pre-treatment units are respectively arranged in each sample collection point to be measured, for receiving raw liquid sample and carrying out pre-treatment to raw liquid sample and obtain sample to be analyzed;Sample intelligent timing injection management unit, online chemical analysis unit and control system are all arranged inside online detection positive pressure shelter laboratory;Sample intelligent timing injection management unit is connected with microfluidic transport unit and online chemical analysis unit, and sample intelligent timing injection management unit carries out simultaneous transmission sampling to multiple points by the way of multichannel sample quantitative ring temporary storage;Online chemical analysis unit is used for carrying out online chemical analysis to sample to be analyzed and outputting analysis result to control system.

Description

TECHNICAL FIELD

[0001] The present application relates to sample sampling, filtering, dilution, enrichment, purification, concentration, high-speed transmission, stack machine sample injection, analysis and detection, and intelligent logic control of online detection of samples, and in particular, relates to a distributed online detection shelter system. BACKGROUND

[0002] Traditional enterprise energy saving and industrial automation efficiency increasing are increasingly needed. For the relatively simple sample pretreatment process, environmental protection and water quality online monitoring technology and products are relatively mature and are increasingly improved. However, when facing slightly complex samples, the automation and batch of online pretreatment become a bottleneck. Even the environment of the online detection equipment for complex samples is often harsh, and high requirements are put forward for the dustproof, moistureproof, shockproof, acid gas and organic reagent corrosion proof, explosion-proof, fireproof and the like of the online detection products. It is also urgently needed to break through the bottleneck and accelerate the pace of factory automation energy efficiency improvement. SUMMARY

[0003] The present application provides a distributed online detection shelter system, which can be used as an overall solution for in-situ online sampling-pretreatment-chemical analysis and detection-data information management of samples in a factory. The design concept of distributed collection and centralized analysis can be used for in-situ sampling, filtering, dilution, enrichment, purification, concentration, high-speed transmission, stack machine sample injection, analysis and detection, and intelligent logic control of samples.

[0004] To achieve the above purpose, the present application provides a distributed online detection shelter system, which comprises an online detection positive pressure shelter laboratory, a sample pretreatment unit, a microfluidic conveying unit, a sample intelligent time sequence sample injection management unit, an online chemical analysis unit and a control system,

[0005] The sample pretreatment unit comprises a plurality of pretreatment units, and the plurality of pretreatment units are respectively arranged at each sample collection point to be detected, for receiving raw liquid samples and pretreating the raw liquid samples to obtain samples to be analyzed;

[0006] The microfluidic conveying unit is connected between each pretreatment unit and the sample intelligent time sequence sample injection management unit, so as to convey the pretreated samples to be analyzed to the sample intelligent time sequence sample injection management unit;

[0007] The sample intelligent time sequence sample injection management unit, the online chemical analysis unit and the control system are arranged in the interior of the online detection positive pressure shelter laboratory;

[0008] The online detection positive pressure cabin laboratory is a closed cabin structure and has a cabin body and a cabin door, the cabin body and the cabin door both have two layers of cabin plates, the two layers of cabin plates are filled with a heat preservation layer having heat preservation, heat insulation and fireproof functions, an air shower buffer zone is arranged on the inner side of the cabin door, double-layer tempered glass windows are installed on the cabin door, and a data display board is arranged on one side of the cabin door.

[0009] The sample intelligent time sequence injection management unit is connected with the microfluidic conveying unit and the online chemical analysis unit, the sample intelligent time sequence injection management unit simultaneously transmits samples from multiple points through a multi-channel sample quantitative ring temporary storage mode, stores the pretreated samples to be analyzed in the quantitative ring of the injection valve, and the sample interface of the multi-channel rotary valve in the sample intelligent time sequence injection management unit supports switching to inject the multiple samples / reagents into the online chemical analysis unit.

[0010] The online chemical analysis unit is used for online chemical analysis of the samples to be analyzed and outputs the analysis results to the control system.

[0011] The control system is connected with the online detection positive pressure cabin laboratory, the sample pretreatment unit, the microfluidic conveying unit, the sample intelligent time sequence injection management unit and the online chemical analysis unit, and is used for intelligent logic control in the system and information interaction with the outside.

[0012] In an embodiment of the present application, the distributed online detection cabin system further comprises a remote intelligent board information unit connected with the control system, the remote intelligent board information unit is arranged in the upstream experimental data information analysis center of the system, and the control system and the upstream experimental data information analysis center of the system exchange information.

[0013] In an embodiment of the present application, the microfluidic conveying unit adopts a microfluidic high-speed jet flow mode to convey the pretreated samples to be analyzed to the sample intelligent time sequence injection management unit.

[0014] In an embodiment of the present application, the pretreatment of the original liquid sample includes collection, dilution, filtration, enrichment, purification and concentration, the sample pretreatment unit quantitatively takes liquid under high pressure through online sampling and double-injection pump online mixing dilution, and the sample pretreatment unit has a continuous infusion pump backflow branch and performs two-stage filtration on the original liquid.

[0015] In an embodiment of the present application, the online chemical analysis unit comprises a gas chromatograph mass spectrometer or a liquid chromatograph mass spectrometer, an inductively coupled plasma spectrometer or is composed of an inductively coupled plasma mass spectrometer, a spectrum analyzer and an electrochemical analyzer.

[0016] In an embodiment of the present application, the on-line chemical analysis unit comprises an on-line chemical analyzer, an industrial computer, a program logic control unit and an electric control part and is integrated by a software information system of a unified communication protocol.

[0017] In an embodiment of the present application, the on-line detection positive pressure cabin laboratory further comprises a temperature and humidity control system, a peripheral auxiliary system, an air intake and exhaust filtration system, a damping system and a monitoring lighting system.

[0018] In an embodiment of the present application, the material of the flow component in the sample pretreatment unit is polytetrafluoroethylene, polyether ether ketone or 316L stainless steel.

[0019] The distributed on-line detection cabin system provided by the present application has the following advantages:

[0020] (1) The present application solves the problems of high failure rate, difficulty in integration and low efficiency of the pretreatment device when on-line processing of samples containing a large number of particles, and has a good effect on the problems such as blockage of pipelines by solid crystallization of high-salinity liquid samples.

[0021] (2) The present application solves the problems of poor reliability, slow timeliness and large sample loss of microfluidic sample delivery during long-distance transmission of samples pretreated by the original method, which causes the on-line analysis and detection system to be unable to be practically applied to actual production in a factory.

[0022] (3) The present application solves the problems of residue and cross-contamination during long-distance transmission of samples pretreated by the original method.

[0023] (4) The present application solves the problem of great reduction in reliability of the mechanical and circuit systems of the entire system under the complex internal environment of a factory, such as high-acid gas, high dust, high temperature and high humidity.

[0024] (5) The present application solves the problems of large occupied area, low expandability, few compatible points and small coverage range in actual application of the original method. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The connection diagram of the distributed on-line detection cabin system of an embodiment of the present application;

[0027] Figure 2 Fig. 2 is a schematic diagram of the outer surface of the cabin door according to an embodiment of the present application;

[0028] Figure 3 Fig. 3 is a schematic diagram of the inner plane of the cabin body according to an embodiment of the present application;

[0029] Figure 4 Fig. 4 is a schematic diagram of the inner three-dimensional view of the cabin body according to an embodiment of the present application.

[0030] Fig. 1 is a schematic diagram of the distributed online detection shelter system according to an embodiment of the present application, wherein the distributed online detection shelter system comprises an online detection positive pressure shelter laboratory 1, a sample pretreatment unit 2, a microfluidic delivery unit 3, a sample intelligent time sequence sample injection management unit 4, an online chemical analysis unit 5, and a control system 6. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0032] The present application is applied to various industrial production sites, which have the needs of monitoring various environmental indexes such as acid gas, dust, vibration, noise, temperature, humidity, and are full of various complex pipelines. The present application provides a distributed monitoring method.

[0033] Figure 1 Fig. 5 is a schematic diagram of the connection of various parts of the distributed online detection shelter system according to an embodiment of the present application, Figure 2 Fig. 2 is a schematic diagram of the outer surface of the cabin door according to an embodiment of the present application; Figure 3 Fig. 3 is a schematic diagram of the inner plane of the cabin body according to an embodiment of the present application; Figure 4 Fig. 4 is a schematic diagram of the inner three-dimensional view of the cabin body according to an embodiment of the present application. Figures 1-4 As shown in Fig. 1, the present application provides a distributed online detection shelter system, which comprises an online detection positive pressure shelter laboratory 1, a sample pretreatment unit 2, a microfluidic delivery unit 3, a sample intelligent time sequence sample injection management unit 4, an online chemical analysis unit 5, and a control system 6.

[0034] The sample pre-treatment unit 2 comprises a plurality of pre-treatment units 21, which are respectively arranged at each sample collection point to be measured, facilitating on-site sampling, and is used for receiving raw liquid samples and pre-treating the raw liquid samples to obtain samples to be analyzed;

[0035] The microfluidic delivery unit 3 is connected between each pre-treatment unit 21 and the sample intelligent time sequence injection management unit 4, so as to deliver the pre-treated samples to be analyzed to the sample intelligent time sequence injection management unit 4;

[0036] The sample intelligent time sequence injection management unit 4, the online chemical analysis unit 5 and the control system 6 are arranged inside the online detection positive pressure cabin laboratory 1;

[0037] The online detection positive pressure cabin laboratory 1 is a closed cabin structure and has a cabin body 11 and a cabin door 12, both of which have two layers of cabin plates filled with a thermal insulation layer having thermal insulation, heat insulation and fireproof functions, which completely isolates the heat exchange between the two sides of the cabin plates, facilitates the control of the temperature, humidity and other environmental indicators inside the cabin body 11, the cabin plates in the present application have the functions of thermal insulation, heat insulation, fireproofing, shockproofing and the like, the design indicators meet the specifications, and the frame and materials used for the cabin body have the characteristics of fireproofing, pressure resistance and corrosion resistance. The inside of the cabin door 12 is provided with a wind shower buffer zone to prevent dust from being brought in when people enter, affecting the cabin environment and thus affecting the detection results, a double-layer tempered glass window is installed on the cabin door 12, the inside of the cabin can be viewed through the window, and a data display board is arranged on one side of the cabin door 12 to display the temperature, humidity, pressure and air volume in the cabin in real time;

[0038] The sample intelligent time sequence injection management unit 4 is connected with the microfluidic delivery unit 3 and the online chemical analysis unit 5, and the sample intelligent time sequence injection management unit 4 simultaneously transmits samples from multiple points by the way of multi-channel sample quantitative ring temporary storage, stores the pre-treated samples to be analyzed in the quantitative ring of the injection valve, and the sample interface of the multi-channel rotary valve in the sample intelligent time sequence injection management unit 4 supports switching to inject multiple samples / reagents into the online chemical analysis unit 5; the sample intelligent time sequence injection management unit 4 uses intelligent stacker time sequence sample storage injection analysis technology, so that the system has full work load and greatly improves work efficiency.

[0039] The online chemical analysis unit 5 is used for online chemical analysis of the samples to be analyzed and outputs the analysis results to the control system 6, and the online chemical analysis unit 5 comprises an online chemical analyzer, an industrial computer, a program logic control unit and an electric control part and is integrated by a software information system of unified communication protocol;

[0040] The control system 6 is connected to the online detection positive pressure container laboratory 1, the sample pretreatment unit 2, the microfluidic transport unit 3, the intelligent sample timing injection management unit 4, and the online chemical analysis unit 5. It is used for intelligent logic control within the system and information interaction with the outside world, and is the core processing part of the entire system in this invention.

[0041] In this embodiment, the distributed online detection cabin system also includes a remote intelligent dashboard information unit 7, which is connected to the control system 6. The remote intelligent dashboard information unit 7 is located inside the upstream experimental data information analysis center 8 of the system. The control system 6 and the upstream experimental data information analysis center 8 can perform visual information interaction. The administrator can manage, statistically analyze, and perform other functions on the data obtained by the control system 6 at the upstream experimental data information analysis center 8. This is also the main medium for realizing human-computer interaction in this invention. It can monitor the status information of the sample in real time and display warning information when abnormal results occur.

[0042] The microfluidic delivery unit 3 uses a high-speed microfluidic jet to deliver the pre-treated sample to the intelligent timing sample introduction management unit 4. The delivery process achieves high flow rate, low energy consumption, and low system load. The sample is delivered to the intelligent timing sample introduction management unit 4 for unified management, which can achieve accurate, stable, and rapid delivery of microfluidic materials.

[0043] The pretreatment of the stock solution sample includes collection, dilution, filtration, enrichment, purification, and concentration. Sample pretreatment unit 2 quantitatively extracts the solution under high pressure through online sampling and online mixing and dilution using dual syringe pumps. Sample pretreatment unit 2 features a continuous infusion pump reflux branch and performs two-stage filtration of the stock solution. The continuous infusion pump reflux branch design effectively avoids the deposition of solid particles in the pipeline, reducing cross-contamination during analysis and enabling real-time replenishment of the stock solution. The main flow components in sample pretreatment unit 2 are made of corrosion-resistant materials resistant to acids, alkalis, organic reagents, and high temperatures, such as polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), and 316L stainless steel, ensuring long-term reliable operation of sample pretreatment unit 2. This invention integrates multiple sample pretreatment technologies, including high throughput, accurate quantification, high pressure resistance, and corrosion and leakage prevention, providing efficient and stable support for subsequent processing.

[0044] The online chemical analysis unit 5 mainly realizes overall control of the whole process of sample analysis of the system, is widely applied to online analysis of samples through analysis technologies such as chromatography, mass spectrometry and spectroscopy, and comprises a gas chromatograph-mass spectrometer, an inductively coupled plasma spectrometer or is composed of an inductively coupled plasma mass spectrometer, a spectroscopic analyzer and an electrochemical analyzer in line, mainly realizes overall control of the whole process of sample analysis of the system, and can realize functions of acquisition, processing and transmission of system states and monitoring data. The online chemical analysis unit 4 accurately analyzes the sample through cold flame treatment technology, and transmits analysis result data obtained after treatment to the experimental data information analysis center 7 upstream of the system for display and storage of data, and the treated waste liquid flows into a waste liquid collection barrel for unified collection and management.

[0045] Figure 3 is a planar display of the internal structure of the online detection positive pressure cabin laboratory 1, Figure 4 is a three-dimensional display of the internal structure of the online detection positive pressure cabin laboratory 1, as shown in Figure 3 、 Figure 4 The online detection positive pressure cabin laboratory 1 is further provided with a temperature and humidity control system 13, a peripheral auxiliary system 14, an air inlet and exhaust filtration system 15, a damping system 16 and a monitoring lighting system 17, and it should be noted that Figure 3 、 Figure 4 The size, position and the like of each system or unit in the drawings are only for illustration, and those skilled in the art can reasonably adjust the size, position and the like of each system or unit according to actual needs, and the drawings are not limiting.

[0046] The distributed online detection cabin system provided by the application is based on the design concept of distribution, relies on microfluidic high-speed jet flow transmission technology, is particularly suitable for long-distance quantitative transmission of microfluids, can realize real-time in-situ collection and processing of samples, and guarantees the reliability and real-time performance of sample collection; meanwhile, the distributed arrangement mode has strong expandability and flexibility, relies on a powerful chemical analysis unit and a logic sampling mode of a stack computer, can be adjusted in time according to changes of factors such as the number, position and distance of to-be-detected points, and the compatible number of points can be theoretically unlimited; and the distributed design form occupies relatively less space and is relatively scattered, can meet the minimum land occupation demand under complex working conditions, and is convenient for realizing in-situ collection and detection of samples.

[0047] The distributed online detection cabin system provided by the application has the following advantages:

[0048] (1) The application solves the problems of high failure rate, difficulty in integration and low efficiency of a pretreatment device when an original mode is used to process a sample containing many particles, and has a good effect on problems such as blockage of a pipeline by solid crystallization of a high-salinity liquid sample.

[0049] (2) The present application solves the problems of poor reliability, slow timeliness, and large sample loss in microfluidic sample delivery during long-distance transmission of samples pretreated by the original method, which causes the online analysis and detection system to be unable to be practically applied in actual production in factories.

[0050] (3) The present application solves the problems of residue and cross-contamination during long-distance transmission of samples pretreated by the original method.

[0051] (4) The present application solves the problem of great reduction in reliability of the mechanical and circuit systems of the whole system under the complex internal environment of factories with high acid gas, high dust, high temperature, and high humidity.

[0052] (5) The present application solves the problems of large occupied area, low expandability, few compatible points, and small coverage range in actual application of the original method.

[0053] Those skilled in the art can understand that the drawings are only schematic diagrams of an embodiment, and the modules or processes in the drawings are not necessarily essential for implementing the present application.

[0054] Those skilled in the art can understand that the modules in the device in the embodiment can be distributed in the device in the embodiment as described in the embodiment, or can be changed and located in one or more devices different from the embodiment. The modules in the above embodiment can be combined into one module, or can be further split into multiple sub-modules.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A distributed online detection modular system, characterized in that, It includes an online positive pressure mobile laboratory, a sample pretreatment unit, a microfluidic transport unit, a sample intelligent timing injection management unit, an online chemical analysis unit, and a control system. The sample pretreatment unit includes multiple pretreatment units, which are respectively set at each sample collection point to receive the original liquid sample and pretreatment the original liquid sample to obtain the sample to be analyzed. The microfluidic delivery unit is connected between each pretreatment unit and the intelligent sample timing injection management unit to deliver the pretreated sample to be analyzed to the intelligent sample timing injection management unit. The intelligent sample sequential injection management unit, the online chemical analysis unit, and the control system are all located inside the online detection positive pressure container laboratory. The online positive pressure cabin laboratory is a closed cabin structure with a cabin body and a door. Both the cabin body and the door have two layers of panels, and the space between the two layers of panels is filled with an insulation layer that has heat preservation, heat insulation and fireproof functions. An air shower buffer zone is provided on the inside of the door. Double-layer tempered glass windows are installed on the door. A data display board is provided on one side of the door. The intelligent time-series sample injection management unit is connected to the microfluidic delivery unit and the online chemical analysis unit. The intelligent time-series sample injection management unit performs simultaneous transmission and sampling from multiple points through a multi-channel sample quantitative loop temporary storage method, storing the pre-treated sample to be analyzed in the quantitative loop of the injection valve. The standard sample interface of the multi-channel rotary valve in the intelligent time-series sample injection management unit supports switching to inject multiple samples / reagents into the online chemical analysis unit. The online chemical analysis unit is used to perform online chemical analysis on the sample to be analyzed and output the analysis results to the control system. The control system is connected to the online detection positive pressure container laboratory, the sample pretreatment unit, the microfluidic delivery unit, the intelligent time-series sample injection management unit, and the online chemical analysis unit, and is used for internal intelligent logic control and information interaction with the outside world.

2. The distributed online detection modular system according to claim 1, characterized in that, It also includes a remote intelligent dashboard information unit, which is connected to the control system. The remote intelligent dashboard information unit is located inside the upstream experimental data information analysis center of the system, and the control system interacts with the upstream experimental data information analysis center.

3. The distributed online detection modular system according to claim 1, characterized in that, The microfluidic delivery unit uses a high-speed microfluidic jet to deliver the pre-treated sample to the intelligent time-sequence sample introduction management unit.

4. The distributed online detection modular system according to claim 1, characterized in that, The pretreatment of the stock solution sample includes collection, dilution, filtration, enrichment, purification and concentration. The sample pretreatment unit quantitatively extracts the liquid under high pressure by means of online sampling and online mixing and dilution with dual injection pumps. The sample pretreatment unit has a continuous infusion pump reflux branch and performs two-stage filtration of the stock solution.

5. The distributed online detection modular system according to claim 1, characterized in that, The online chemical analysis unit includes a gas or liquid chromatography-mass spectrometry analyzer, an inductively coupled plasma spectrometer, or a combination of an inductively coupled plasma mass spectrometer, a spectrometer, and an electrochemical analyzer.

6. The distributed online detection modular system according to claim 1, characterized in that, The online chemical analysis unit includes an online chemical analyzer, an industrial computer, a programmable logic control unit, and an electrical control component, all integrated and controlled by a software information system with a unified communication protocol.

7. The distributed online detection modular system according to claim 1, characterized in that, The online detection positive pressure cabin laboratory is further equipped with a temperature and humidity control system, an external auxiliary system, an air intake and exhaust filtration system, a shock absorption system, and a monitoring and lighting system.

8. The distributed online detection modular system according to claim 1, characterized in that, The flow-through components in the sample pretreatment unit are made of polytetrafluoroethylene, polyetheretherketone, or 316L stainless steel.

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