403 results about "Gas analyzer" patented technology

The invention relates to the technical field of gas detection, and provides a doped gas concentration detection method and system based on a gas analyzer. The method comprises the following steps: constructing a standard spectrum database under the same pressure and temperature as a to-be-measured site; the method comprises the following steps: introducing sample gas into an optical absorption cell, carrying out wavelength scanning through a tunable diode laser in a plurality of adjacent absorption spectral line intervals containing target gas and interference gas, superposing a high-frequency sinusoidal modulation signal on a driving current, and synchronously detecting a second harmonic component of transmission laser to generate an actual measurement spectrum; fitting the actually measured spectrum with a synthetic spectrum generated on the basis of a standard spectrum database, and outputting a target gas concentration ratio as a detection result when a residual error meets a threshold value, so as to solve the technical problem that the detection precision is reduced due to spectrum overlapping caused by interference gas, and achieve the purpose that the detection precision is reduced by constructing the standard spectrum database and second harmonic spectrum fitting analysis. And the accuracy and the anti-interference capability of gas detection are improved.

The invention discloses a lime kiln monitoring system based on multi-source data dynamic fusion, which is characterized by comprising a thermal imager, an infrared sensor, a pressure sensor, a gas analyzer and an edge computing node, the edge computing node is configured with a Raspberry Pi platform and an LSTM neural network accelerator and is used for executing multi-source data preprocessing and feature compression, and the Raspberry Pi platform and the LSTM neural network accelerator are connected with the thermal imager. The system also comprises a working condition analysis system, and the working condition analysis system comprises a ring formation prediction model based on ST-GCN, a combustion optimization model based on DDPG, and an anomaly detection model based on an isolated forest and automatic encoder hybrid model. The invention aims to solve the limitation of a traditional monitoring system, realize real-time monitoring and accurate control, improve the equipment health management and predictive maintenance capability, optimize waste heat recovery and energy utilization, and enhance man-machine interaction and operation convenience.

The application provides a multi-gas control device, a use method and an application, and relates to the technical field of biological gas fermentation. The device comprises a gas supply module, the gas supply module comprises multiple groups of gas sources and connecting pipelines, each gas source is connected to an air inlet pipeline through a respective connecting pipeline, a secondary pressure reducing valve, a T-shaped filter, a mass flow meter, a stop valve, a regulating valve and a check valve are sequentially arranged on the connecting pipeline, the air inlet pipeline is connected to a liquid circulation pipeline, gas is discharged from a spraying mechanism connected to the liquid circulation pipeline, the spraying mechanism is arranged in a fermentation tank, the spraying mechanism is connected to a circulating pump through the liquid circulation pipeline, the circulating pump is connected to the bottom of the fermentation tank through a pipeline, the top of the fermentation tank is connected to a detection pipeline, and a precision filter, a vacuum pump, a drying device, a pre-analyzer and a gas analyzer are sequentially arranged on the detection pipeline. The application realizes efficient absorption and utilization of multiple gases, and simultaneously obtains high yield and high quality single-cell protein.

The invention discloses an underwater in-situ gas analyzer suitable for deep sea extreme environment, which comprises a pressure-resistant cabin body, the pressure-resistant cabin body comprises a main body cabin, a front end cover and a rear end cover are respectively mounted at two ends of the main body cabin, a fixed bracket is fixedly connected in the main body cabin, and a vacuum detection cavity, a primary vacuumizing pump and a secondary vacuumizing pump are mounted on the fixed bracket. The primary vacuumizing pump and the secondary vacuumizing pump are both communicated with the vacuum detection cavity, the vacuum detection cavity is communicated with a gas component analyzer, a vacuum air pressure detection device is installed on the vacuum detection cavity, and the underwater in-situ degassing device is communicated with the vacuum detection cavity through a pipeline. And the first-stage vacuumizing pump, the second-stage vacuumizing pump, the gas component analyzer and the vacuum air pressure detection device are electrically connected with the control circuit system. The device can stably and continuously work in a deep-sea high-pressure low-temperature environment, is convenient to disassemble, assemble, transport and maintain, and can be widely applied to extreme environments such as deep-sea hydrothermal liquid, cold springs and hydrogen-rich nozzles.

A gas emission monitoring system is configured for versatile deployment across various sites, including gas extraction locations, industrial settings, and environmental monitoring areas. The system may include a support structure holding a plurality of tubings, each equipped with at least one intake port. The tubings may be interconnected through a connecting tubing that ultimately links to an analysis tubing feeding into a gas analyzer. The design ensures that the intake ports are strategically positioned at different vertical levels relative to the ground, for example, for optimized air sampling. The gas analyzer may be configured to identify multiple types of gas content in a received air mixture, which is collected from the various intake ports. Thus, the systems discussed herein may provide a comprehensive, adaptable solution for real-time gas monitoring, capable of handling a broad range of gases and environmental conditions.

The utility model discloses a process parameter experiment and selection device for harmless treatment of chemical waste salt, which comprises a reaction furnace, a movable reaction device, a gas inlet pipe, a gas cylinder, a gas outlet pipe, a cold trap and a gas analyzer, the movable reaction device is mounted at an opening in the lower end of the reaction furnace through a sealing flange, and comprises a sample bearing part for feeding a sample into the reaction furnace; a gas inlet pipe is arranged in the movable reaction device, and the gas cylinder is connected with a gas inlet of the gas inlet pipe and used for inputting reaction atmosphere into the reaction furnace; gas generated by the reaction of the sample in the reaction furnace is output through an upper end gas outlet pipe; the cold trap is used for cooling and filtering gas generated by reaction; and the gas analyzer is connected with the cold trap and is used for performing component analysis on the gas filtered by the cold trap. According to the utility model, technological parameters of harmless treatment can be quickly determined by using a small amount of waste salt.

The invention relates to the field of gas mixing systems, and discloses a gas mixing system based on high-pressure proportional valve control. The system comprises at least two gas branches, and each gas branch is provided with a high-pressure proportional valve communicated with a gas inlet and a one-way valve located at the downstream of the high-pressure proportional valve. The mixing unit is used for mixing the gas of each gas branch in a high-pressure state; the energy storage unit is communicated with the mixing unit and is used for temporarily storing the mixed high-pressure gas; the detection control unit comprises a gas analyzer communicated with the energy storage unit and a controller electrically connected with the gas analyzer, and the controller adjusts the opening degree of the high-pressure proportional valve in a closed-loop mode according to detection signals of the gas analyzer, so that the target component concentration of the mixed high-pressure gas is maintained within a preset range. The system can directly realize accurate proportioning and dynamic adjustment of multi-component gas on a high-pressure side, reduces lag and energy consumption of a low-pressure mixing scheme, and is suitable for high-pressure laser welding, material testing and other scenes needing quick response and high-precision proportion control.

The invention discloses an ultraviolet absorption gas analyzer, and relates to the technical field of gas analyzers. The ultraviolet absorption gas analyzer comprises an analyzer outer shell, the analyzer outer shell is connected with a first supporting seat and a second supporting seat, the first supporting seat is fixedly connected with a light source supporting seat, the light source supporting seat is provided with an ultraviolet light source generator, a rotating disc is rotatably connected between the first supporting seat and the light source supporting seat, and the rotating disc is provided with a rotating shaft. A plurality of groups of optical filter main bodies are arranged on the rotating disc, a measuring air chamber is arranged between the first supporting seat and the second supporting seat, and a light source receiver is arranged on the second supporting seat. According to the ultraviolet absorption gas analyzer, on one hand, protection is provided for the optical filter main body, the optical filter main body is isolated from the external environment, on the other hand, when the optical filter main body is replaced, the replacement of a plurality of groups of optical filter main bodies can be realized only by rotating the rotating disc, and the replacement process is convenient to operate, time-saving and labor-saving.

The utility model discloses an explosion-proof type gas analyzer, which relates to the technical field of gas analyzers and comprises an analyzer explosion-proof shell and a fixing frame, one side of the analyzer explosion-proof shell is provided with an access hole, and the fixing frame is fixedly arranged on the outer side of the access hole. A cover plate is arranged on the side, away from the analyzer explosion-proof shell, of the fixing frame in an abutting mode, a plurality of through holes are formed in the surface of the cover plate in an annular array mode, threaded rods are movably inserted into the multiple through holes, one ends of the multiple threaded rods are fixedly connected with the side wall of the fixing frame, and the other ends of the multiple threaded rods are fixedly connected with the side wall of the analyzer explosion-proof shell. A sliding groove is formed in the side, away from the fixing frame, of the cover plate, a sliding block is arranged in the sliding groove in a sliding mode, an arc-shaped plate is fixedly arranged on the outer side wall of the sliding block, a thread is formed in the inner wall of the arc-shaped plate, and the thread on the inner wall of the arc-shaped plate is connected with the thread on the outer wall of the corresponding threaded rod in a clamped mode. According to the utility model, the explosion-proof housing can be opened in a time-saving and labor-saving manner, and internal elements of the explosion-proof housing can be conveniently maintained.

The invention discloses a gas analyzer fault early warning method and system based on battery state data, and relates to the technical field of data processing, and the method comprises the steps: collecting necessary parameters such as real-time terminal voltage and open-circuit voltage of an oxygen battery and auxiliary parameters such as an analyzer working mode; preprocessing the necessary sampling parameters and the auxiliary parameters, constructing an initial library, and marking interpolation nodes and unit operation intervals; obtaining and screening a parameter set based on the initial library and the interpolation node to obtain a third initial parameter set; constructing a discharge fault inflection point prediction model in combination with the discharge characteristics of the oxygen battery; a prediction parameter set is generated and imported into the model to obtain an undervoltage fault prediction inflection point; and generating alarm information based on the inflection point. The system comprises an acquisition module, a data processing module, a communication module, an early warning module and subordinate units, and the method is realized. The method has the advantages that fault risks can be recognized in advance, non-planned shutdown is reduced, accurate operation of the analyzer is guaranteed, and the method is suitable for environment protection monitoring and other scenes.

The invention discloses a method for determining carbon isotopes of low-concentration soluble organic carbon in a water body, and belongs to the technical field of organic carbon detection. The determination method comprises the following steps: combining a TOC analyzer and a stable isotope mass spectrometer, and converting DOC in a water body into CO2 gas by adopting the TOC analyzer; cO2 gas generated by the TOC analyzer is enriched for the first time through the cold trap T1; the CO2 gas frozen by the cold trap T1 is enriched for the second time through a cold trap T2; introducing the CO2 subjected to secondary enrichment into a stable isotope mass spectrometer, and determining the carbon isotope composition of the CO2. Aiming at a low-concentration DOC water body, the carbon isotope composition of DOC in the water body is determined on the basis of combination of a wet oxidation technology and stable isotope mass spectrometry detection, a wet oxidation method is used for increasing the volume of a water sample to generate more CO2 for stable isotope mass spectrometry determination, so that more accurate carbon isotope composition is obtained, and the method is efficient, time-saving, labor-saving and accurate.

Thermogravimetric Reactor (TGR) and process to study weight change behavior of carbonaceous solids / catalysts during thermo-chemical reactions in gaseous environment up to the maximum operating temperature of 1000° C. and at atmospheric pressure are disclosed. The device includes a vertical tube reactor, digital weighing balance, gas feeding system equipped with volumetric flow controllers, rotameters, isolation valves and non-return valves to introduce inert and reactive gases and their mixtures to the reactor. It also has a movable electrical furnace heater for sudden heating / cooling of sample as per requirement. It also has sample feeding / loading system comprising containers of different sizes and shapes with a hanging arrangement There is arrangement to test the product gas composition with on line gas analyzer in the exit line or collecting the outgoing gas from the sampling port for off line gas analysis. The system also has control panel to store and display data including process parameters.

The invention belongs to the technical field of gas concentration detection, and particularly relates to a rotary kiln infrared gas analyzer which comprises a shell assembly, a heat dissipation device is installed on the shell assembly, a gas suction device is installed at one end of the shell assembly, a filtering device is fixedly connected to the gas suction device, and a supporting plate is fixedly installed in the shell assembly. A detection gas chamber, a reference gas chamber and a correction gas chamber which are arranged in parallel are fixedly arranged on the supporting plate in a penetrating manner, and structures such as a processor, a controller, a temperature sensor, a gas pressure sensor, an electric heating wire and the correction gas chamber are arranged; the air temperature in the correction air chamber is heated to be the same as the air temperature in the detection air chamber through the electric heating wire, the air pressure in the detection air chamber is adjusted to be the same as the air pressure in the heated correction air chamber through the cooperation of the air pump and the exhaust valve, and then the detection result is calculated in equal proportion. The concentration of the target gas in the flue of the rotary kiln in the normal temperature state can be obtained, and the accuracy of a detection result is greatly improved.

The invention discloses a multi-point collection gas analyzer in a fire-fighting environment, and relates to the technical field of gas analysis, the multi-point collection gas analyzer comprises a body with a lower port, and also comprises a miniature electric telescopic rod and a gas pump which are detachably mounted in the body; the gas analysis chamber is detachably mounted in the lower port of the body, the top of the gas analysis chamber is connected with the gas inlet of the gas pump, and a gas pressure sensor is arranged in the gas analysis chamber; the storage module is communicated with the inner cavity of the body and is in threaded connection with the lower port of the body, and a first filter part and a second filter part which are communicated with the outside are sequentially arranged in the storage module from bottom to top; through mutual cooperation of the micro electric telescopic rod, the air pump, the pushing frame, the air distribution adjusting assembly and the like, blocking alarming is conducted on the first aspect, back flushing cleaning is conducted on the first filtering piece on the second aspect, and an air pressure sensor is detected on the third aspect.

The utility model discloses a suction type double-gas analysis leak detector which comprises a first gas analysis chamber and a second gas analysis chamber which are independently arranged, the gas outlet end of the first gas analysis chamber and the gas outlet end of the second gas analysis chamber are connected with a vacuum pump, a first gas conveying pipe is connected to a first gas inlet of the first gas analysis chamber, and a second gas conveying pipe is connected to a second gas inlet of the second gas analysis chamber. A gas inlet II of the gas analysis chamber II is connected with a gas conveying pipe II, and a gas suction nozzle II and a gas suction nozzle I are respectively arranged on the gas conveying pipe II and the gas conveying pipe I in a front-back manner. When the concentrations of the gases sucked by the second suction nozzle and the first suction nozzle are consistent or basically close, the alarm signal is not sent out, and when the concentration of the gases sucked by the second suction nozzle at the front end is larger than that of the gases sucked by the first suction nozzle, the alarm signal of detecting a leakage point is sent out, namely, the gas leakage point exists near the second suction nozzle. And therefore, the position of the leakage point can be locked quickly, accurately and efficiently, and the leakage detection efficiency of the equipment can be greatly improved.

The utility model provides a dynamic box detection system for measuring gas exchange between a plant and the atmosphere, and relates to the technical field of detection of gas released or settled by the plant, the system comprises a blank control box and a plant box for accommodating the plant, and the plant box is communicated with a first gas inlet pipe and a first gas outlet pipe; a second air inlet pipe and a second air outlet pipe are communicated in the contrast box; the air pump communicates with the first air inlet pipe and the second air inlet pipe and is used for supplying air with the same concentration to the two box bodies at the same time. The gas analyzer is communicated with the first gas outlet pipe and the second gas outlet pipe, the gas concentration in the contrast box and the plant box is detected through the gas analyzer, meanwhile, the gas inlet flow rate and leaf area data are collected, and the gas release or sedimentation rate between the plant and the atmosphere is calculated through a formula; the system can quickly and effectively reflect the rate of gas exchange between the plant and the atmosphere under the normal stress-free condition, so that the system is mainly used for reflecting the short-term response of the gas flux to the environmental change.

The utility model discloses a low-calorific-value fuel gas calorific value adjusting device for stabilizing combustion of a hydrogen conversion furnace, which comprises a high-calorific-value analytic gas buffer tank and a controller, and the high-calorific-value analytic gas buffer tank is connected with a high-calorific-value analytic gas compressor through a gas pipeline. The high-calorific-value desorption gas compressor is connected with a low-calorific-value fuel gas pipeline through a high-pressure pipeline, an electric control valve controlled by a controller is arranged on the high-pressure pipeline, a gas analyzer controlled by the controller is arranged on the low-calorific-value fuel gas pipeline, and a mixing buffer tank is arranged at the tail end of the low-calorific-value fuel gas pipeline. According to the utility model, the mode that high-calorific-value analysis gas is supplied to low-calorific-value fuel gas is adopted, the low-calorific-value fuel gas pipeline is connected with the high-pressure pipeline, the high-calorific-value analysis gas is supplied to the low-calorific-value fuel gas conveying pipeline according to the detection of the gas analyzer and the adjustment requirements of the calorific value, and then the high-calorific-value analysis gas is mixed through the mixing buffer tank; and the adjusted low-calorific-value fuel gas is conveyed to the hydrogen production reformer, so that the hydrogen production reformer can stably burn.

The invention discloses a full-automatic carbon dioxide flux measurement assimilation system, which belongs to the technical field of environmental monitoring and gas measurement, and comprises: a plurality of full-automatic opening and closing sampling boxes for sealing an area to be measured; a plurality of gas inlets of the multi-port selector valve are respectively connected with the gas outlets of the plurality of sampling boxes through a gas path pipeline with the length of not more than 5m and the inner diameter of 4-6mm; and a gas inlet of the greenhouse gas analyzer is connected with a public outlet of the multi-port selection valve through a gas path pipeline. By integrating a plurality of full-automatic opening and closing sampling boxes and an advanced greenhouse gas analyzer, the system can accurately measure the carbon dioxide flux. The system can automatically switch gas sampling points through the multi-port selector valve, so that the measurement process is more efficient and has higher accuracy. The system utilizes a high-precision sensor to ensure that collected environment data has high precision, which is crucial to calculation of carbon dioxide flux.

The utility model belongs to the field of gas distribution tests, and particularly relates to a multifunctional gas distribution test device which comprises a placing box, a gas distribution tank and a supporting seat, the inner wall of the placing box is fixedly connected with the gas distribution tank, the supporting seat is provided with a rotating assembly and a pushing assembly, and the outer wall of the gas distribution tank is fixedly connected with a gas outlet pipeline. The multifunctional gas distribution test device can flexibly control gases of different gas sources to flow into the gas distribution tank through the first valve switch and the six sets of switches, diversified gas distribution requirements are met, precise gas distribution is achieved, meanwhile, the top of the gas distribution tank is connected with the detection pipeline and the gas analyzer, and a valve can be opened to convey a sample to the analyzer before detection, so that the detection efficiency is improved. The gas distribution concentration can be monitored in real time, the gas distribution quality can be guaranteed, the gas outlet pipeline 7 can be directly connected with pipelines of other equipment, the gas outlet pipeline 7 can be directly connected with the other equipment, and the flexibility of the device is improved.

This invention discloses an online detection method and device for the interlayer vacuum degree of multi-layer insulation in cryogenic containers, belonging to the field of cryogenic insulation vacuum detection technology. The method includes: installing a vacuum-sealed base on the outer wall of the container; penetrating the outer liner with a piercing capillary probe and inserting it into the interlayer gap; constructing a two-stage high-vacuum differential system consisting of an oil-free dry forepump, a turbomolecular pump, a fine-tuning needle valve, a flow-limiting capillary, a differential chamber, and a residual gas analyzer to form a low-speed drainage loop; after pre-evacuating the background gas, adjusting the fine-tuning needle valve to extract the interlayer gas at low speed, simultaneously collecting the total pressure and component partial pressures; calculating the true vacuum degree by combining flow resistance, gas resistance, permeation resistance, and temperature correction; after detection, leaving the end of the piercing capillary probe inside the layer without removing it, and permanently sealing the base port; repeating the detection at different points and depths to complete a full-area scan. This application has the advantages of direct online detection, minimally invasive and leak-free operation, repeatable testing, and accurate tracing of failure causes.

The present application relates to a gas detection device for an electrolysis cell test device and an electrolysis cell test device.The electrolysis cell test apparatus comprises the following: an electrolysis cell for receiving an electrolyte medium and for carrying out an electrolytic reaction, which has an outlet for discharging an electrolysis product; and a gas discharge line, one end of which is connected to the outlet of the electrolysis cell and which is provided with a gas pretreatment device; wherein the gas detection device comprises a gas sampling and analysis line, one end of which is connected to the outlet of the electrolysis cell, and wherein a sample gas treatment module and a gas analyzer are arranged successively along the flow direction of the electrolysis product, wherein the sample gas treatment module performs cooling and gas-liquid separation of the electrolysis product, while the gas analyzer analyzes the gas discharged from the sample gas treatment module.The gas detection device of the present application reduces the time between gas generation in the electrolysis cell and gas detection and improves the safety of the electrolysis cell test device.

The invention provides an engine post-treatment airflow uniformity testing device and method.The measuring device comprises a tail gas collecting device, the tail gas collecting device comprises a gas sampling pipe, a pre-filter, a heating pipe and a gas analyzer, one end of the gas sampling pipe is arranged close to a gas outlet of a post-treatment device of an engine, and the other end of the gas sampling pipe is arranged close to a gas outlet of the post-treatment device of the engine; the other end of the gas sampling pipe is connected with one end of the pre-filter, and the other end of the pre-filter is connected with the gas analyzer through the heating pipe. According to the invention, the nitrogen oxide content at a plurality of different position points in the radial direction and the circumferential direction of the air outlet of the engine post-treatment device can be measured, so that the engine post-treatment airflow uniformity can be accurately evaluated.

1. Name of the product in this design: Online Gas Analyzer. 2. Application of this design: This design is intended for use in environmental protection online gas monitoring and analysis instruments. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key features: the front view.

The invention discloses a performance testing device and a performance evaluation method of a greenhouse gas analyzer. The device comprises a multi-port selector valve, a plurality of input ports of the multi-port selector valve are respectively connected with first to nth input gas paths, and an output port of the multi-port selector valve is respectively connected with a gas path of an instrument to be tested and a gas path of a standard instrument through a three-way interface; the to-be-measured instrument gas path and the standard instrument gas path are the same in gas path structure and comprise a stop valve and a three-way connector which are connected in sequence, one of the three-way connectors is used for being connected with the rotor flow meter, the other one of the three-way connectors is used for being connected with the mass flow controller, and the mass flow controller is used for being connected with the to-be-measured instrument or the standard instrument. The test requirements of performance evaluation of the greenhouse gas analyzer, including calibration and linear test, repeatability and drift test, water vapor correction test and the like, can be met, relatively complex matrix effect test and comparison test between instruments can also be performed, and the condition that a test pretreatment device is repeatedly built in the long-term test process is avoided.

The application discloses a kind of gas analyzer's calibration device and gas analysis system, calibration device includes several groups of calibration module, each calibration module includes controller, and three-way regulating valve equipment and calibration unit are connected with controller communication;Different calibration module is used to calibrate different categories of standard gas;Calibration unit, three-way regulating valve equipment and gas analyzer are sequentially communicated by pipeline;Controller is used to generate first control instruction when calibration, based on first control instruction control the valve opening of corresponding calibration unit;Controller is also used to generate second control instruction when calibration, based on second control instruction drive corresponding three-way regulating valve equipment switches to target working state, to make standard gas that calibration unit exports pass three-way regulating valve equipment and be delivered to corresponding gas analyzer, using standard gas to calibrate gas analyzer and carry out calibration operation.The device ensures the measurement accuracy of analyzer and the accuracy of test result.

A calibration method includes receiving data characterizing a first pressure broadening coefficient, a second pressure broadening coefficient and a third pressure broadening coefficient of the target gas absorption associated with a first background gas, a second background gas and a third background gas, respectively. The method further includes, determining a molar ratio associated with the second background gas and the third background such that an effective pressure broadening coefficient associated with a target gas mixture including the second background gas and the third background gas mixed at the determined molar ratio is within a predetermined threshold of the first broadening coefficient. The target gas mixture further includes a target gas. The method also includes calibrating a gas analyzer using the target gas mixture to replace the calibration of the target in the first background gas. The calibration is based on absorption of electromagnetic radiation by the target gas in the target gas mixture.

The application discloses a kind of laser welding devices of defect self-detection, belong to laser welding field, the electric turntable top is equipped with driving disc, the driving disc is fixedly connected at gas analyzer body top, the driving disc inner wall is hinged with ratchet pawl, the fixed rod outer wall is rotatably connected with connecting ring, and the connecting ring inner wall is fixedly connected with connecting rod.By fixing steel pipe on the top of base, and starting electric turntable to drive welding gun body and gas analyzer body to rotate forward and backward, the welding operation and detection work of steel pipe can be accurately completed, after laser welding is completed, start air pump to inject gas into steel pipe, gas analyzer rotates and analyzes the gas composition of steel pipe, by driving disc driving ratchet pawl and ratchet clockwise rotation, plugging is carried out to both ends of steel pipe using hydraulic system, so as to guarantee the accuracy of gas analysis process, to detect whether there is defect and air leakage in steel pipe.

Provided is a system (100) having an analysis device (1) that analyzes components contained in a gas (9). The analysis device comprises: a filter (25) that selects and passes a component contained in a gas; a detector (26) that detects the component that has passed through the filter; and a first control device (36) configured to set a filter (25) such that the detector (26) detects a high abundance isotope 21Ne instead of a low abundance isotope 20Ne, as neon which is a main component contained in the gas.

The utility model relates to the field of gas analyzers, and discloses a gas analyzer with a filtering structure. An upper cover is arranged on the upper surface of the gas storage tank, a micro driving motor is fixedly mounted on the upper surface of the upper cover, a rotating shaft is fixedly mounted on one side of the micro driving motor, an upper fixing frame is welded to the upper portion of the surface of one side of the rotating shaft, a through hole is formed in the surface of the upper fixing frame, and a fixing bolt is movably inserted into the surface of the through hole. A limiting vertical plate is welded to the tail end of the fixing bolt, a lower fixing frame is arranged at the tail end of the limiting vertical plate, a limiting groove is formed in the surface of the lower fixing frame, and an activated carbon adsorption layer is arranged on the upper surface of the lower fixing frame. When the device is used, the activated carbon adsorption layer is inserted into the gap between the upper fixing frame and the lower fixing frame, the fixing bolt is screwed down after the position of the activated carbon adsorption layer is determined, the limiting vertical plate can limit the activated carbon adsorption layer, and it is guaranteed that the activated carbon adsorption layer cannot fall off in the rotating process of the rotating shaft.

The application belongs to the technical field of environmental monitoring, and discloses a device and method for monitoring the gas transmission rate under windless conditions, which comprises an air outlet hole, an air inlet hole, a three-way valve, an upper columnar acrylic tube, an elevator, a fan, a headspace, a rope, a counterweight, an air isolation plate, a silica gel ring, a lower columnar acrylic tube, a sterile CH4-containing water body, an upper air outlet hole, a lower water inlet hole, a carmer peristaltic pump, a German TPU tube, a water-gas separation device and a greenhouse gas analyzer. While ensuring air tightness, the application prepares a water body containing high-concentration greenhouse gases, such as carbon dioxide (CO2), and diffuses under windless conditions. Through the diffusion time, the concentration difference of greenhouse gases in the water body before and after diffusion, the concentration difference of greenhouse gases in the headspace and the specific parameters of the acrylic tube, the greenhouse gas diffusion rate can be calculated. The results can enrich the research connotation of water body greenhouse gases and provide a basis for water body carbon emission to participate in the 'double carbon' strategic goal.