143results about How to "Guaranteed representation" patented technology

The invention discloses an electric energy safety management system and method based on a cloud platform, and relates to the technical field of electric energy safety management, and the scheme comprises the steps: collecting the operation data of a micro-grid unit in a power grid, and transmitting the operation data to the cloud platform; judging whether the operation data at each time point is abnormal or not; constructing a topological structure of the power network according to the physical connection between the micro-grid units; dividing all nodes into different areas, calculating a comprehensive evaluation value of each node, and selecting the node with the highest comprehensive evaluation value as a local center node of each area; and when a plurality of micro-grid units in any area have an electric energy safety fault, calculating the priority of each fault node according to the local aggregation coefficient of the fault node and the connectivity between the fault node and the local center node, and performing maintenance according to the priority of the fault node. And comprehensive monitoring and management of the electric energy quality are realized.

The invention belongs to the technical field of data processing, and particularly relates to a rice field soil emission reduction potential estimation method and system based on carbon-nitrogen coupling and a medium, and the method comprises the steps: collecting rice field nitrogen application information in a target area through literature statistics, dividing rice fields with similar nitrogen application into the same type, and selecting a plurality of typical areas from each type; carrying out soil sampling at fixed intervals in the typical rice field area, analyzing the nitrogen concentration level of the soil, and obtaining representative samples; performing soil column experimental simulation by using the representative sample, and estimating the average emission of specific gas; and determining significant influence factors, setting different carbon-nitrogen coupling situations to carry out an orthogonal simulation experiment, quantifying factor importance, carrying out weighted accumulation to obtain a comprehensive emission estimation value, and evaluating the carbon-nitrogen coupling-based biochar rice field emission reduction capability. The method can effectively estimate the rice field soil emission reduction potential.

The invention discloses a real-time face change detection method, system and device based on deep learning and a medium. The method comprises the following steps: acquiring a key frame image sequence in a video stream in real time; processing the key frame image sequence according to a preset deep learning model to obtain a face change probability score of each key frame image; processing the key frame image sequence according to a preset frequency domain analysis algorithm to obtain a frequency domain anomaly score of each key frame image; processing the key frame image sequence according to a preset optical flow analysis algorithm to obtain a motion coherence score of each adjacent key frame image; and according to a preset multi-modal fusion algorithm, processing the face change probability score, the frequency domain anomaly score and the motion coherence score to obtain a face change detection result of the key frame image sequence. According to the method, the efficiency of real-time dynamic face change detection is improved by combining fusion of various processing algorithms.

The invention relates to a preparation method of a multi-metal coarse-grained ore sample. The preparation method of the multi-metal coarse-grained ore sample comprises the following steps: roasting an ore sample, and pre-screening the roasted sample by adopting a 6-mesh standard sieve; carrying out coarse crushing on the residual materials after pre-screening, and uniformly mixing the crushed materials with the pre-screened materials; carrying out intermediate crushing on the uniformly mixed materials, and feeding the materials subjected to intermediate crushing into a crusher for grinding; and repeatedly and uniformly mixing the ground materials, dividing the uniformly mixed ground materials into a sample amount, grinding the divided materials into 200 meshes through a sealed test sample preparation grinder, and uniformly mixing and bagging the ground materials. According to the scheme provided by the invention, through four links of coarse crushing, intermediate crushing, fine crushing and fine grinding, large-particle-size ore materials are crushed and processed by stages, the particle size of each stage and representativeness of a division sample are ensured, the ore materials are finally processed to the particle size of-200 meshes or below, the qualified rate of preparation of coarse-particle ore samples is increased, and accurate guidance of production is realized.

The invention belongs to the technical field of seam welding detection, and particularly discloses and provides a roof waterproof roll seam welding detection method which comprises the following steps: constructing a three-dimensional model of a to-be-constructed welding area, and marking the type of a welding detection point; welding characteristic analysis is conducted on the welding area, and all welding characteristic indexes are obtained; the number of welding detection points is determined, and the welding detection points are marked; confirming a standard passing threshold value of each welding detection point corresponding to each welding detection index; building a welding quality inspection model; sequentially carrying out quality inspection according to a set welding quality inspection plan, and recording quality inspection values; and the welding quality score value is output, and a welding quality inspection report of the waterproof coiled material is constructed and fed back. According to the method, the defect that current welding detection points are arranged comprehensively is effectively overcome, the specific welding characteristics of the waterproof coiled material are fully combined, the adaptability of a seam welding detection scene of the roof waterproof coiled material is improved, and meanwhile the representativeness and rationality of a welding detection result are guaranteed.

The embodiment of the invention provides a flash open block test method and related equipment thereof, and the method comprises the steps: obtaining a plurality of test samples of a flash open block, and selecting a plurality of test blocks from each test sample; carrying out a life early-stage data retention experiment on the plurality of selected test blocks, and obtaining the bit flipping number of each open case corresponding to the open block; a plurality of target open cases are selected from a plurality of open cases corresponding to the open block based on the number of bit flipping, and the plurality of target open cases are subjected to life middle and later period data retention experiments, so that the data retention performance of the open block is determined based on experimental data, the data retention performance of the open block can be rapidly and effectively evaluated, the test time of the 3D TLC flash memory is saved, and the test efficiency of the 3D TLC flash memory is improved. And the test conclusion is more stable and reliable.

The invention belongs to the technical field of ecological environment monitoring and management, and particularly relates to an ecological slope carbon sink metering method. Dividing the ecological slope into a plurality of independent areas according to topographic features, and dividing the independent areas into different gradient grades according to gradients; in each subarea, further classifying the subareas into different vegetation type areas according to vegetation types, namely classification areas; selecting a representative quadrat in each classification area, wherein the size of the quadrat is adjusted according to different vegetation types; calculating the carbon sequestration amount of vegetation in each quadrat; correcting a metering result according to different gradients and vegetation types; and summarizing the carbon sequestration amounts of all the quadrats. According to the ecological slope carbon sink metering method provided by the invention, the topographic features and vegetation types of the ecological slope are comprehensively considered, the method is suitable for a carbon sink metering scheme under complex environmental conditions, and the accuracy, reliability and operability of carbon sink metering under an ecological slope environment are improved.

The invention provides a photovoltaic power station ecological environment monitoring point optimization method and device, and relates to the technical field of monitoring. The method comprises the following steps: generating m original data sets based on monitoring data of n monitoring point positions for monitoring m monitoring indexes, and generating a to-be-optimized list according to identifiers of the n monitoring point positions; when the first monitoring index of the first monitoring point position is traversed, determining the monitoring data of the first monitoring indexes of other n-1 monitoring point positions as a comparison data set; after the m monitoring indexes of the n monitoring point positions are traversed, target differences between the n comparison data sets of each monitoring index and the corresponding original data sets are determined respectively; adding the identifier of the target object meeting the preset difference condition to a saving list; and selecting a target object meeting a preset optimization condition from the saving list and determining the target object as the optimization object of the round. Based on the technical scheme, the monitoring cost of the ecological environment of the photovoltaic power station can be reduced.

The invention relates to the technical field of soil detection, and discloses a method and system for detecting heavy metal pollution in a soil sample, and the system comprises three modules: a data acquisition module, a data processing module and a state early warning module. The data acquisition module acquires soil samples at different depths in different preset areas, stores the soil samples in a pollution-free container, and marks sample sources. The data processing module is responsible for pretreatment and chemical analysis of samples, heavy metal signal intensity is measured by using an ion detector, heavy metal concentration is calculated, pollution level is further evaluated, and a result is sent to the state early warning module. The state early warning module judges whether the area is a sensitive area or not according to the evaluation result, and carries out secondary sampling and evaluation if necessary so as to correct the pollution level and decide whether to give out early warning or not. By calculating the heavy metal signal intensity, the blank signal intensity and the instrument sensitivity correction factor, the heavy metal concentration in the soil sample can be accurately calculated.

The present invention discloses a method for constructing a patent technology classification system in the field of air traffic management, and belongs to the field of patent analysis and mining technology. The method comprises step 1, mining key technology classification vocabulary in the field of air traffic management; step 2, calculating the measurement value of the technology classification vocabulary; step 3, constructing an initial technology classification system for patents in the field of air traffic management; step 4, constructing an expert set, and the experts in the expert set evaluate the technology classification vocabulary to obtain a first evaluation matrix; step 5, reducing the expert set and calculating a third evaluation matrix; step 6, calculating the importance and consistency of the technology classification vocabulary; step 7, reducing the technology classification vocabulary set to obtain the final patent technology classification system. The method makes full use of the domain corpus and the knowledge accumulation of experts, and reduces the bias of expert decision-making, so that the patent technology classification system finally constructed is more representative.

The invention discloses a street riding safety evaluation method based on VR visual perception and physiological signals, and relates to the technical field of large model construction. The objective of the invention is to solve the technical problem that the safety perception of a rider in a dynamic riding process is difficult to comprehensively reflect due to the lack of the combination of subjective and objective feelings of the rider in the evaluation of the street riding safety feeling in the prior art. According to the technical scheme provided by the invention, the street riding safety evaluation method based on VR visual perception and physiological signals comprises the following steps: acquiring a video of a riding road section; a step of preprocessing the video of the riding road section; a step of displaying the preprocessed video of the riding road section to a user through VR equipment; collecting physiological signals of a user; and evaluating the safety of the riding road section according to the physiological signal of the user. The method is suitable for street riding safety evaluation work.

The invention relates to the technical field of sampling devices, in particular to an electric arc furnace slag outlet automatic sampling device which comprises an electric arc furnace, a flow guide groove, a fixing plate, a sampling device and a driving mechanism, the flow guide groove is connected with the electric arc furnace slag outlet, the fixing plate is arranged on the flow guide groove, a mounting hole is formed in the fixing plate, and the sampling device is arranged in the mounting hole. The sampling device is arranged on the fixing plate and located on the vertical plane of the center line position of the flow guide groove, the driving mechanism is arranged in the through hole, and the driving mechanism is arranged on one side of the sampling device, so that the problems that manual sampling is low in safety and large in error are solved.

This invention discloses a method for diagnosing sewage leaks in drainage pipes based on the introduction of clean water, specifically relating to the field of municipal engineering. The method includes: collecting water samples from adjacent manholes at both ends of the pipe to be inspected on a sunny day; pre-treating the samples and then performing fluorescence detection to obtain an initial fluorescence value F; introducing clean water at a known flow rate q0 into the downstream manhole's inlet pipe; after the clean water and sewage are fully mixed, collecting a water sample from the downstream manhole; pre-treating the sample and then performing fluorescence detection to obtain a fluorescence value F' from the downstream manhole; and introducing clean water at a known flow rate into the upstream manhole's inlet pipe; after the clean water and sewage are fully mixed, collecting a water sample from the upstream manhole; pre-treating the sample and then performing fluorescence detection to obtain a fluorescence value F'' from the downstream manhole. By introducing clean water into the upstream and downstream manholes and combining it with the fluorescence conservation principle, the leakage amount and uncertainty are calculated, thus solving the problems of high cost of video detection, low accuracy of flow monitoring, and difficulty in tracing the source of low-pollution water.

The invention discloses a device and method for measuring the velocity and concentration of a dust-laden airflow. The device comprises an airfoil plate, a connecting rod, a first sensor, and a second sensor housing. One end of the connecting rod is rigidly connected to the airfoil plate, and the other end is connected to the first sensor and the second sensor in sequence. The first sensor and the second sensor are torque sensors or tension / pressure sensors. The relative position of the housing and a pipeline is fixed, and the other sides of the first sensor and the second sensor are connected to the housing. The first sensor and the second sensor are connected to the input end of a calculation unit, and the output end of the calculation unit is connected to an output module. Force or torque is used as a measurement signal instead of a pressure difference signal, and signal distortion or loss will not be caused by the presence of dust. The structure of the connection between the airfoil plate and the sensor is not affected by the monitoring direction, and can be applied to vertically arranged pipelines or horizontally arranged pipelines. Torque sensors and tension / pressure sensors are cheaper and more reliable than pressure sensors.

The utility model discloses an automatic sampler for feed-grade granular calcium hydrophosphate. The automatic sampler for feed-grade granular calcium hydrophosphate comprises a gear motor, a rack and a sampling hopper, the speed reducing motor is mounted on the rack; the rack is erected above the belt; a gap is formed between the bottom end of the sampling hopper and the top surface of the belt; the gear motor is in driving connection with the sampling hopper; the sampling hopper rotates around an output shaft of the speed reducing motor. According to the automatic sampler, uniform material taking of the whole belt section material can be realized, non-uniform material taking is prevented, so that the representativeness of the taken sample is ensured, and when the automatic sampler is used for sampling feed-grade granular calcium hydrophosphate, the sample is not blocked when being transferred to a sample box.

The invention relates to the technical field of crystallization control, and discloses a programmed cooling crystallization kettle and method capable of regulating and controlling sugar alcohol crystal granularity, and the method comprises the following steps: constructing a basic nonlinear cooling model in advance, and respectively collecting real-time torque and actual average chord length of the crystal by using a torque sensor and a focused light beam reflection measurement probe in the crystallization process; and the control system calculates the cooling rate correction according to the granularity deviation through a PID algorithm, calculates a rheology correction factor according to the torque change, and performs attenuation treatment on the sum of the basic rate and the correction by using the rheology correction factor to obtain a final cooling instruction to adjust the temperature in the kettle. Through dual feedback of coupling granularity and rheology, the contradiction between crystal growth and mass transfer resistance under a high-viscosity system is solved, the inclusion amount of the mother liquor is remarkably reduced while the target particle size is realized, and the purity and uniformity of the product are improved.

The present invention relates to the technical field of information system construction, and in particular to a method for constructing a hepatobiliary surgery decision support system based on case reasoning. The method comprises the following steps: obtaining historical case information data of hepatobiliary surgery and establishing a connection with a hepatobiliary surgery case library to generate a hepatobiliary surgery case decision management database; obtaining new case information data of hepatobiliary surgery input by a user and performing case feature vector conversion and KD tree similar case retrieval processing, while performing case neighbor reasoning decision support analysis to obtain new case neighbor reasoning decision support results of hepatobiliary surgery; performing system architecture development and design on the case neighbor reasoning mechanism process corresponding to the new case neighbor reasoning decision support results of hepatobiliary surgery and uploading it to a cloud platform for system integration and pilot testing to construct a hepatobiliary surgery case decision support system. The present invention can help hepatobiliary surgery cases improve the scientificity and accuracy of decision support.

The present invention relates to the technical field of sample preparation for testing, and discloses a sample preparation device for triaxial testing of granular materials and a method for using the same, that is, on the one hand, when the petals of the molding mold are molded together, by making the bottom of the molding mold sleeve on the top periphery of the mold base and pressing the bottom of the sample wrapping film, the structural stability of the mold during sample preparation can be improved; on the other hand, before sample preparation, the internal ventilation structure of the mold petals can be used to form a negative pressure so that the middle part of the sample wrapping film is stretched and tightly attached to the inner wall surface of the molding mold, which is convenient for laying the sample wrapping film, thereby facilitating the sample preparation efficiency and qualified rate of non-sticky cylindrical samples. In addition, since the triaxial compression test can be conveniently performed on the molded non-sticky cylindrical sample when the petals are opened, compared with the existing vacuum sample preparation method and the freezing sample preparation method, time and steps can be saved, and the efficiency of sample preparation and testing can be greatly improved.

The invention provides a battery system state evaluation and early warning method based on multi-source information fusion, and the method comprises the steps: synchronously collecting the multi-source state data of a battery system, which at least comprises a real-time synchronization parameter group for cooperatively evaluating the mechanical integrity and environment interaction risk, the real-time synchronization parameter group comprises vibration acceleration data, organic volatile matter concentration data, humidity data and corrosion rate data; processing the data of the real-time synchronization parameter group, extracting combined feature parameters having an association relationship with each other to form a feature vector, the combined feature parameters at least comprising: a structure risk feature, a sealing risk feature, and a connection risk feature; and inputting the feature vectors into a preset multi-parameter fusion analysis model to analyze a linkage mode among the combined feature parameters, and synchronously generating and outputting a safety risk report based on an analysis result of the linkage mode, the safety risk report at least comprising a mechanical integrity risk index and an environment interaction risk index.

This invention discloses an automated limestone sampling device and its usage method for desulfurization systems in thermal power plants. Limestone transported by truck is unloaded into a limestone pit hopper, then transferred via a vibrating feeder, bucket elevator, and sliding pipe to a limestone storage hopper for use in the desulfurization system. The limestone sampling device is mounted on the sliding pipe and powered by a cylinder. During sampling, its actuator extends into the sliding pipe, cutting off the entire flow area for sampling. After sampling, the actuator is pulled out, and the collected sample is transferred by a scraper to a collection pipe, where it is collected by a sample collection bucket. This invention achieves mechanized, automated, and uniform limestone sampling in thermal power plant desulfurization systems, solving the problems of high cost, poor sample representativeness, and the risk of fraud associated with manual sampling.

The present invention discloses a gantry-type cotton moisture regain detection device, comprising a movable gantry that moves in the longitudinal direction, and a control detection system arranged on the movable gantry, a cotton transport vehicle detection channel arranged in the longitudinal direction is arranged directly below the movable gantry, and a vehicle-mounted bulk cotton moisture regain detection device and / or a cotton mold moisture regain detection device is also arranged on the movable gantry. The system can achieve full coverage detection of the moisture regain of vehicle-mounted bulk cotton and cotton molds through the movable gantry, the detection trolley and the microwave water measurement component. The gantry-type cotton moisture regain detection device solves the problems of high labor intensity of moisture regain detection in the cotton purchasing process, single detection position and limited depth that cannot represent the actual moisture regain of the whole vehicle cotton, detection accuracy being greatly affected by human factors, and slow detection speed, and achieves full coverage detection of the moisture regain of vehicle-mounted bulk cotton and cotton molds, thereby improving the accuracy of detection.

The present application relates to the technical field of food raw material sampling detection, and in particular to a food raw material primary processing sampling detection device, which comprises a conveying bottom plate, the top of the conveying bottom plate is fixed with a horizontal sliding rail, the horizontal sliding rail is connected with a moving plate through an electric sliding block, the top of the moving plate is connected with a containing box for containing raw materials through a T-shaped plate, the T-shaped plate is set upside down, the horizontal section of the T-shaped plate is symmetrically provided with sampling parts in front and back, and the top of the moving plate is commonly provided with reciprocating pushing parts on the left and right sides. The sampling pipe is used to sample from the bottom to the top through the sampling hole preset at the bottom of the containing box, compared with the direct sampling mode of the container from the top of the containing box, the damage to the peas can be reduced, so that the appearance of the processed peas is ensured, and through the pushing arc surface arranged on the side of the sealing plate, the damage to the peas caused by the sealing plate in the process of sealing the through hole can be avoided, and the appearance of the processed peas is further ensured.

This utility model relates to the field of soil research technology and discloses an equidistant sampling device suitable for the study of soil pollutants in agricultural land. It includes a support plate with a scale fixedly connected to its top. Two I-shaped grooves are formed at the top of the support plate, and two I-shaped sliders are slidably connected to the inner walls of the two grooves. Two pedals are fixedly connected to the tops of the two sliders. The operator first determines the sampling interval according to the research requirements. Then, the operating parameters of the bidirectional motor, such as speed and direction of rotation, are set via the control panel. After starting the bidirectional motor, its output drives a bidirectional screw to rotate. Due to the bidirectional thread characteristic of the bidirectional screw, the two moving sleeves connected to the surface of the bidirectional screw will move in opposite directions at equidistant intervals along the screw. The operator can then observe the position of the pointer on the scale.

The utility model provides a kind of hydraulic engineering geological survey sampling device, it is related to hydrogeological engineering survey technical field, including cylinder, by coaxial setting upper sampling cavity, middle sampling cavity and lower sampling cavity constitute three-dimensional sampling space;Negative pressure source, it is communicated to each sampling cavity, directional negative pressure is formed when sampling.The utility model can realize high-precision stratified sampling without cross-contamination, by orthogonal distribution upper, middle and lower water inlet channel, make the water body of different depth in geological survey stationary surface water along independent path into corresponding sampling cavity, completely avoid interlayer mixing from physical structure, ensure stratified data authenticity;The utility model can optimize fluid flow, guarantee sample integrity and representativeness, the horn-shaped water inlet of anti-turbulence cover reduces flow velocity, combined with spiral guide flow channel, convert turbulent flow into stable laminar flow, reduce bubble disturbance and particulate matter settlement, significantly improve the originality of sample, meet high-precision water quality analysis demand.

The invention provides an experimental device and an experimental method for simulating a water source migration law, the device comprises a water injection assembly, a water pipe assembly, a water-resisting layer simulation structure and a water-bearing layer simulation structure, and the water-bearing layer simulation structure is arranged on the water-resisting layer simulation structure; the aquifer simulation structure comprises a peripheral simulation aquifer and a water injection layer aggregate; the aggregate of the water injection layer adopts stone materials with different particle sizes, and gaps among the stone materials are used for simulating water source distribution in an actual underground aquifer; the aquifer simulation structure is used for simulating an actual underground aquifer; after the water-resisting layer simulation structure is broken, water in the aggregate of the water injection layer leaks and migrates through the water-resisting layer simulation structure so as to simulate the actual water source migration process; according to the experimental device for simulating the water source migration rule, migration characteristics of underground water after a water-bearing layer is broken due to overlying strata movement after coal mining can be simulated, and structural support is provided for coal mine underground reservoir site selection and water source prediction.

This invention relates to the field of laboratory analytical instrument technology, specifically to a water bath nitrogen blowing device, comprising a water bath nitrogen blowing instrument, a drain pipe fixedly connected to one end of the drain pipe, and a wastewater tank fixedly connected to one end of the drain pipe. A protrusion is fixedly installed inside the wastewater tank, and the protrusion has multiple sets of first straight grooves, inclined grooves, and second straight grooves. A hydraulic rod is installed at the upper end of the wastewater tank, and a fixed box is installed at the power output end of the hydraulic rod. Multiple sample collection tubes are installed inside the fixed box for sampling wastewater. Each sample collection tube has a sliding sealing rod slidably connected inside, and a sliding ball is fixedly connected to one end of the sliding sealing rod. The sliding ball is slidably connected to each of the first straight groove, inclined groove, and second straight groove. This device can automatically sample wastewater at different depths when sampling and testing is required.

The utility model relates to a sampling device suitable for water vapor quality detection of a power station boiler, which comprises a box body provided with moving wheels at the bottom, a sealed flow cell is arranged in the box body, a cooling assembly is arranged in the sealed flow cell, the sealed flow cell is connected with a sampling pipeline and a feeding pipeline, and the feeding pipeline is connected with the sampling pipeline. And the pipe head of the feeding pipeline is connected with a water pipe universal joint. The device has the function of collecting a water sample to be tested, can ensure the sealing performance of an instrument in the whole test process, can effectively connect various sampling pipe joints of different models on a boiler with a feeding pipeline of the device, and ensures that the temperature and the flow of the water sample to be tested meet the test requirements of the instrument in the test process of the instrument; therefore, the accuracy and effectiveness of field test results are ensured. In addition, the device meets the requirement for portable sampling in field inspection of the water vapor quality of the power station boiler, and the standardization and accuracy of the test are improved.

The present invention relates to the technical field of sampling devices, and specifically to an automatic sampling device for an arc furnace slag outlet, comprising: an arc furnace, a guide trough, a fixed plate, a sampling device and a driving mechanism, wherein the guide trough is connected to the arc furnace slag outlet, the fixed plate is arranged on the guide trough, a mounting hole is opened on the fixed plate, the sampling device is arranged on the fixed plate, and the sampling device is located on a vertical plane at the center line position of the guide trough, the driving mechanism is arranged in the through hole, and the driving mechanism is arranged on one side of the sampling device, so as to solve the problem of low safety and large error in manual sampling.

The application provides an oversampling method, system, controller and storage medium for an unbalanced data set, wherein the oversampling method comprises: mapping a data set to a feature space by using a pre-trained deep learning model, wherein the data set comprises multi-class sample data, and the multi-class sample data is divided into majority class sample data and minority class sample data according to data quantity; optimizing the feature space to enable same-class sample data in the multi-class sample data to be gathered; generating synthetic samples of the minority class sample in the feature space; and verifying the synthetic samples, and supplementing the at least minority class sample with the verified synthetic samples. The application solves the problems of existing oversampling methods, such as easy model overfitting, sample confusion, poor sample quality and the like.

The invention relates to the technical field of tail gas detection, in particular to a sulfonic acid processing sulfonation tail gas detection sampling device which is characterized in that a three-way valve is arranged on the upper side of a cyclone separator, a sampling mechanism is arranged on the upper side of the three-way valve, and a docking mechanism is arranged on the sampling mechanism; according to the invention, the sampling assembly in the sampling mechanism is matched with the docking mechanism, so that sulfonated tail gas needing to be circulated and discharged in advance in the sampling process can be collected and flows back to the conveying pipe communicated with the electrostatic demister, and a plurality of sampling points at different positions can be arranged in the same section of sulfonated tail gas flow; therefore, synchronous multi-point random sampling on the same section of sulfonated tail gas flow can be realized; according to the invention, the butt-joint assembly in the butt-joint mechanism is matched with the quick-mounting assembly in the sampling mechanism, so that the gas collecting bag can be quickly sealed and mounted to a point position needing to be sampled so as to sample sulfonated tail gas.