63 results about "Gas analysis" patented technology

The application relates to the technical field of spectral data processing, and discloses a passive infrared gas analysis inversion method and system based on a convolution decoupling architecture and a background parameterization model. The method comprises the following steps: obtaining a standard radiation brightness original observation tensor; extracting radiation distribution characteristics of an environmental background through a multi-scale space background estimation network; inputting the original observation tensor and the baseline background characteristic vector into a preset convolution decoupling architecture; performing bidirectional orthogonal constraint processing on a background decoupling branch and a gas feature extraction branch in the convolution decoupling architecture to separate a pure target gas spectrum feature map; and inputting the pure target gas spectrum feature map into a preset concentration inversion mapping network to obtain a column concentration distribution matrix of a target gas in a target monitoring area. Through the technical solution, the passive infrared gas signal and the complex environmental background are accurately separated, and the accuracy of target gas column concentration inversion is improved.

A gas analysis apparatus and method are disclosed that can perform measurements in direct and collection modes without complex control. The gas analysis apparatus 100 according to this disclosure includes: a branching component 20 for branching a target gas; a mass spectrometer 80 for mass spectrometry analysis of one branch of the target gas; a collection component 60 for holding another branch of the target gas; a gas chromatograph 70 for analyzing the other branch of the target gas held by the collection component; and a controller 50 for controlling the flow paths of the one branch of the target gas and the other branch of the target gas. During thermal analysis, the branching component 20 is controlled to continuously branch the supplied target gas and discharge the one branch of the target gas and the other branch of the target gas, and after the thermal analysis is completed, the other branch of the target gas held by the collection component 60 is supplied to the gas chromatograph 70.

A light emitting device and method thereof, and a gas analysis system and method thereof, are disclosed. The light emitting device includes: an optical comb light source configured to generate an initial light signal; an encoding module configured to encode the initial light signal based on a preset comb code to form a light signal to be processed; and a modulation module configured to perform quantum noise compression on the light signal to be processed to form an emitted light signal. This invention belongs to the field of precision measurement. Through a collaborative architecture of "compressed optical comb + computational encoding," optical comb spectroscopy technology achieves improvements in multiple dimensions, including sensitivity, environmental adaptability, speed, and system complexity.

This invention provides a device and method for real-time assessment of combustion toxicity based on dynamic airflow analysis. The device includes a combustion generator, a mixing chamber, a gas analysis system, an air source, and a data processing and control system. The combustion generator is used to thermally decompose the sample and generate combustion flue gas. One end of the air source is connected to the first air inlet of the combustion generator, and the other end is connected to the air inlet of the mixing chamber. The first air outlet of the combustion generator is connected to the second air inlet of the mixing chamber via a first pipeline. The second air outlet of the mixing chamber is connected to the first end of the gas analysis system. The air source can supply air to the combustion generator and the mixing chamber to generate a test atmosphere of a specific concentration, which is then monitored and evaluated in real time by the gas analysis system. By changing the test parameters, various decomposition conditions can be simulated, and information such as gas concentration and toxicity index can be provided online in real time, thereby evaluating the combustion toxicity of non-metallic materials.

The application discloses a transformer fault diagnosis method based on a small sample unbalanced data set, comprising the following steps: S1, acquiring a transformer dissolved gas analysis data set and a comprehensive feature set; S2, constructing a transformer fault diagnosis model based on a small sample unbalanced data set; S3, according to the gas analysis data set and the comprehensive feature set, performing model training on the constructed transformer fault diagnosis model to obtain an optimal fault diagnosis model; and realizing transformer fault diagnosis based on the small sample unbalanced data set according to the optimal fault diagnosis model. The application solves the problems that the current traditional method cannot accurately diagnose transformer faults due to the technical problems such as complex fault mode recognition, specific class accurate diagnosis, insufficient model generalization ability and difficulty in fusion parameter optimization under a small sample unbalanced fault data set in the prior art.

The utility model discloses a kind of pipeline unit and gas chromatograph gas path system, belong to gas chromatograph technical field, when gas path system normal operation, only open the gas inlet valve and gas outlet valve connected with one group of filter assembly of pipeline unit, to realize the gas of gas source input gas chromatograph is filtered and purified;When the filter assembly being used of pipeline unit fails, close the gas inlet valve and gas outlet valve connected with fault filter assembly, open the gas inlet valve and gas outlet valve connected with another group of filter assembly, so that gas path system keeps normal operation, and maintenance is carried out to fault filter assembly;Therefore, when the filter assembly of pipeline unit fails, gas path system can realize maintenance without stopping, ensure that gas chromatograph can continue normal operation, to obtain accurate gas analysis result.

A portable purity testing system for fuel used in a vehicle includes a fluid conduit extending between a first end and a second end, a pressure and flow regulation system communicatively coupled to the first end and disposed downstream of the first end, and a gas analyzer communicatively coupled to the pressure and flow regulation system and disposed downstream of the pressure and flow regulation system.

This invention discloses a quantitative analysis system and method for overlapping gas components, belonging to the field of gas analysis and vacuum diagnostics technology. The system comprises: a vacuum chamber to be tested, a first valve connection, and a differential device connected in sequence; the differential device is connected to a mass spectrometry detection unit, a spectral detection unit, and a vacuum pump unit; the mass spectrometry detection unit is used to acquire ion current signals of the analyte gas in multiple mass-to-charge ratio channels; the spectral detection unit is used to acquire characteristic spectral signals of the analyte gas in multiple wavelength channels; a data processing and calculation unit is communicatively connected to the mass spectrometry detection unit and the spectral detection unit, respectively, to obtain and output the partial pressure or concentration of each candidate gas component. Overlapping gas components are those gas components that are difficult to accurately distinguish in mass spectrometry detection due to overlapping mass-to-charge ratio channel responses or overlapping or intersecting characteristic spectral lines in spectral detection. This invention improves the identification capability and quantitative accuracy of overlapping components.

The application discloses a refinery gas composition determination method and related device, and relates to the field of gas analysis. The absolute correction factor of nitrogen and the relative correction factor corresponding to each stable gas are determined, and the absolute correction factor of the stable gas with relatively stable content in air is determined. Similarly, the absolute correction factor of each alkane is determined according to the absolute correction factor of methane and the relative correction factor of each alkane relative to methane, and the absolute correction factor of hydrogen is determined according to the content of hydrogen in the production sample containing hydrogen and the chromatographic peak area of hydrogen, wherein the chromatographic peak area of hydrogen is obtained by processing the production sample by a thermal conductivity detector. The determination of the absolute correction factor of each gas component is realized, and on the basis, the concentration of each component in the sample can be determined by combining the detection of the chromatographic peak area of each component of the refinery gas sample, thereby providing a reliable reference for subsequent resource utilization.

This invention discloses a monolithic, high-performance integrated nuclear and chemical gas detector, belonging to the field of nuclear and chemical detection technology. The invention includes a nuclear radiation detection module, a chemical gas detection module, and a central control and processing module. The nuclear radiation detection module and the chemical gas detection module are integrated and both connected to the central control and processing module. The nuclear radiation detection module includes a sampling module and a nuclear data output module, while the chemical gas detection module includes a chemical gas sampling module, a gas analysis module, and a gas data output module. This invention achieves integrated detection of both nuclear radiation and chemical gases. Through modular design and central control coordination, it enables simultaneous acquisition and analysis of nuclear radiation and chemical gases, achieving efficient and integrated monitoring of nuclear and chemical substances. Simultaneously, the integrated detection modules significantly reduce size and power consumption, making it more suitable for portable applications and improving the efficiency and comprehensiveness of early warning in hazardous scenarios.

The utility model provides a kind of wind power gear oil on-line monitoring system, including oil body processing device, gas analysis unit;Oil body processing device includes shell, first cavity is equipped in shell, stirring mechanism is installed in first cavity, degassing port is equipped in shell top and is communicated with first cavity, the side of first cavity is equipped with oil inlet and oil outlet respectively, and oil body processing device is connected in the circulation line of wind turbine generator system gear box by oil inlet and oil outlet;Ultrasonic vibration unit is equipped between stirring mechanism and oil outlet;Gas analysis unit is connected with degassing port, for detecting the gas component and concentration that enter from degassing port.Working, oil body is under the action of ultrasonic vibration unit and stirring mechanism, carries out sufficient degassing, and then detects gas component and concentration by gas analysis unit and exports the data obtained by monitoring to outside, realizes the monitoring of gas in the gear oil in the gear box of wind turbine generator system.

The utility model discloses a blast furnace top gas analysis system with voltage stabilization and protection, belonging to the technical field of chemical waste gas detection and analysis. The system includes a sampling device, a pretreatment module, and a gas analyzer. After the sampling device collects the blast furnace gas, the sampled gas is transported to the gas analyzer through the pretreatment module. The pretreatment module includes a voltage stabilization unit. The structure of the voltage stabilization unit includes a pressure gauge for collecting the pressure of the sampled gas before entering the filter. The output end of the filter is connected with a pneumatic switching valve. The conveying pipeline of the sampled gas of the pneumatic switching valve is at least divided into two paths. One path is directly connected to a pressure stabilizing valve, and the other path enters the pressure stabilizing valve after passing through an air extraction pump and a check valve in sequence. A needle valve is connected in parallel with the air extraction pump, and the needle valve and the air extraction pump form a sampled gas loop. The pressure gauge is connected with a PLC controller, and the PLC controller controls the pneumatic switching valve by controlling an electromagnetic valve. The utility model has the characteristics of voltage stabilization and safety.

The embodiment of the present disclosure provides a large-flow permeation tube water removal system and method containing water vapor correction. It is applied to the technical field of gas analysis, and comprises a sampling device, a sample gas treatment device containing a semi-permeable membrane and a water vapor correction equation test device connected in sequence. In this way, the present application can take into account large-flow sampling and ultra-low dew point water removal, and significantly improve the accuracy of greenhouse gas monitoring, system stability and field deployment adaptability.

The utility model provides a kind of fire combustion characteristic test equipment under low pressure low oxygen environment, including combustion cabin, vacuum pump, oxygen concentration adjusting device, test tube, gas analysis device, spray tower, exhaust fan and exhaust pipe, the side of combustion cabin is equipped with sealing door, the air inlet end of vacuum pump is communicated with the top of combustion cabin by pipeline, oxygen concentration adjusting device is communicated with inside combustion cabin by pipeline, one end of test tube is communicated with the air outlet end of vacuum pump by pipeline, other end is communicated with spray tower by pipeline, gas analysis device is communicated with test tube by pipeline, the air inlet end and air outlet end of exhaust fan are respectively communicated with spray tower, exhaust pipe.This design's advantage is: can simulate the special environment of low pressure and low oxygen concentration in high altitude area to carry out combustion experiment, to obtain accurate, reliable test result.

1. The name of the design product: gas chamber for flue gas analyzer (six times reflection type). 2. The use of the design product: gas chamber for flue gas analyzer for containing gas to be detected. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

This invention discloses a scalable distributed multi-chamber open-path photosynthetic measurement system and method, relating to the field of plant physiological and ecological measurement technology. The system includes a main unit and at least two distributed chambers. The main unit centrally manages gas supply, concentration mixing, flow control, and high-precision concentration differential analysis. Each chamber is an independent unit, equipped with an adjustable LED light source, thermoelectric temperature control module, multiple types of sensors, independent power supply, and wireless communication module. An open path is formed through the gas supply pipeline and the return pipeline. The core of the method lies in the main unit polling and sampling the return gas from each chamber according to a preset program through a multi-channel automatic switching valve group. Combined with a "flushing stabilization" strategy, a single gas analysis unit is used to achieve high-precision, high-throughput parallel measurement of multiple chambers. This invention solves the problems of low throughput and high cost of traditional open-path instruments, achieving a balance between high precision and high throughput, and supports in-situ deployment in the field and remote monitoring.

The utility model discloses a coal measure strata helium and harmful gas analysis and detection system, including gas delivery system, sample introduction system, separation system and detection system, gas delivery system includes gas generator, air compressor and gas compression jar, sample introduction system includes first six -way valve, first ration ring and first chromatographic column, separation system includes first separation unit, second separation unit and separation and conversion unit, detection system includes TCD detector, FPD detector and FID detector. The utility model can effectively realize coal measure strata helium and harmful gas's analysis and detection, and can detect other various mixed gas component, simple structure, high sensitivity, low operating cost. Can determine the natural gas component and its content in the evaluation area in advance, provides reliable data for helium resource evaluation and rich helium beneficial area optimization, prevents or reduces the harmful gas caused by coalbed gas development process simultaneously and causes various influences, improves the development and utilization of coalbed gas resources.

The present invention provides a system and a method for performing evolved gas analysis and gas chromatography on a single sample within a single experiment. The system and the method enable the simultaneous acquisition of thermal and compositional data by splitting evolved gases from a micro-furnace into two analytical pathways. A first pathway is directed to an evolved gas analysis (EGA) tube, and a second pathway is directed to a gas chromatography (GC) column following temporary cryogenic trapping. After completion of the EGA stage, the trapped gases are released and transferred into the GC column via an internal cryo-trap, and a GC-MS analysis is performed on the same sample. Upstream and downstream splitter connections and multiple transfer lines route gases efficiently without requiring additional sample preparation.

The present disclosure aims to provide a thin film for solid-state batteries that has a low residual solvent content, is less likely to adversely affect the performance of the solid-state battery, and can be manufactured by a roll-to-roll continuous coating method. [Solution] A thin film 100 for a solid-state battery is provided, comprising solid electrolyte particles 110 and crystalline fluororesins 120 and 130 that bind the solid electrolyte particles 110 to each other, wherein at least a portion of the crystalline fluororesins 130 is fibrous, and the content of volatile components measured by gas analysis means is 10 ppm by mass or less.

The utility model relates to air sampling technical field, concretely relates to a kind of air sampling multistage dehumidification device for rail transit, including sampling collection pipe, filter module, U-shaped tube, gas analysis module in turn along gas flow direction;It further includes primary water droplet flow guide structure, secondary extrusion structure, tertiary discharge structure, respectively for promoting the condensation of water vapor in sampling collection pipe into water droplet and flow guide discharge, for extruding the adsorbed water of filter sponge adsorption in filter module, for collecting the water drop of filter sponge seepage or extrusion.The utility model adds primary water droplet flow guide structure, secondary extrusion structure, tertiary discharge structure in correspondence in sampling collection pipe, filter module, U-shaped tube, carries out flow guide collection to water vapor water droplet etc., multiple protection is realized, prevent water droplet flow into gas analysis module, thus can avoid affecting gas monitoring work and avoid causing economic loss.

The application relates to a cable branch box with a wiring port protection structure and relates to the field of power equipment safety protection. The cable branch box comprises a box body, a protection box arranged at a wiring port in the box body, a monitoring air chamber defined by the protection box and the wiring port, a pressing plate arranged in the monitoring air chamber and attached to a connecting part, a gas hole arranged on the pressing plate, a fusible sealing piece arranged at the gas hole and attached to the connecting part, and a gas-sensitive sensor arranged in the monitoring air chamber. The fusible sealing piece is sealed in normal operation and is melted and penetrated in fault overheating, so that a gas detection and pressure relief channel is automatically opened. The gas-sensitive sensor detects characteristic gas generated by thermal decomposition of insulating materials to realize early warning. The application further realizes fault grading judgment through the modes of sealing pieces with different melting points, independent gas collecting cavities and multi-component gas analysis, integrates fire extinguishing and active explosion suppression functions, and solves the problem of large safety hazards of a traditional full-sealing protection mode.

The present invention relates to a gas detection sensor comprising two or more gas detection segments, a gas analysis device, and a gas analysis method using same. The type of gas included in mixed gas can be analyzed using the two or more gas detection segments, and the gas can be analyzed with excellent sensitivity and selectivity through vector signaling and imaging steps.

This document describes a portable, real-time gas extraction and analysis system for the headspace of containers with metal closures. The system's penetration device creates an opening in the metal closure, allowing gas to be extracted from the container into a chamber. A seal limits gas leakage by keeping the container closed, forming the chamber and the container interior after the opening. One or more airtight valves further limit gas leakage and direct the gas extracted by the penetration device into the chamber. Once extraction is complete, one of the airtight valves directs the gas from the chamber to a gas analyzer, such as a detector tube, via a pipe connected to the valve. The system may also include an optical sensor system for gas analysis.

The utility model belongs to instrument installation structure technical field especially relates to a in situ laser gas analysis instrument cooling installation structure. Including in situ laser gas analysis instrument head, cooling chamber, gas source input pipe, vortex pipe, gas output pipe, cooling chamber is casing structure, and the left and right sides are provided with power cord connecting hole and signal line connecting hole respectively, and the back is provided with meter head hole, and the front side is provided with observation window, and in situ laser gas analysis instrument head sets up in the middle of cooling chamber, and gas source input pipe is connected to vortex pipe high pressure gas entrance, and vortex pipe's cold gas output pipe is connected to air inlet hole, and gas output pipe is connected to air outlet hole. The application can effectively isolate and protect the meter head structure that is easily damaged under high temperature environment in high temperature environment, and then can continue to use it in high temperature environment, guarantee each electrical element in lower working environment, guarantee its data precision, improve its performance.

1. The name of the design product: water vapor permeability tester (single cavity). 2. The use of the design product: the design product is used for gas analysis instrument. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.