77 results about "Chemical accident" patented technology

The invention relates to an emergency interlocking monitoring system and a method thereof for a dangerous chemicals leakage accident, which belong to the technical field of the dangerous chemicals accident emergency rescue. The emergency interlocking monitoring system comprises an explosion-proof wireless gas concentration monitoring subsystem and an explosion-proof individual wireless video transmission subsystem arranged around the site where the leakage accident occurs; an emergency command host computer arranged at a site emergency command center, a video server and a wireless receiving module. The method mainly comprises the steps that wind direction, speed, concentration of leaked gas and video pictures on the site of each monitoring point are collected in real time, and the emergency command host computer receives and displays information, and provides site emergency treatment measures; the accident casualty radius is calculated according to aftermath, and the evacuation region of the people is determined; emergency rescue force and rescue facilities around the accident site are displayed on a GIS system, and the optimum evacuation path for the people is searched and displayed on an electronic map. The emergency interlocking monitoring system and the method can reduce the accident damage, and better guarantee the life safety and the property security of the people.

The invention relates to a chemical accident site poisonous gas monitoring system and an emergency processing method thereof, and belongs to the technical field of dangerous chemical accident emergency rescue. The system comprises a mobile robot composed of a wheel-type driving mechanism, a support structure, a lead screw drive assembly, a poisonous gas monitoring assembly, an image collection assembly, a wireless sending module, a control command receiving module, a power module and a motion control module and a remote monitoring subsystem which is in wireless communication with the mobile robot. The method comprises the steps that the rotating speed of the mobile robot is controlled, and straight-line forward moving and turning of the mobile robot are achieved; the mobile robot is controlled to adjust the sampling height of a poisonous gas sensor; according to the poisonous gas concentration, GPS information and weather information, a gas diffusion model is selected, and leakage source intensity is obtained through calculation; according to the poisonous gas leakage accident module and the leakage source intensity, the maximum personal casualty influence range of a poisoning accident is obtained and displayed on a GIS map, and therefore the personnel evacuating range is determined.

The invention discloses a case-based reasoning method facing hazardous chemical accident emergency aid decision making. The method includes the steps: 1, structurally expressing accident characteristics of accident cases of dangerous chemicals and the emergency rescue process thereof, and serving as sample cases of emergency aid decision-making; 2, acquiring feature information parameters of the incident to be determined at a site, and converting text information of the feature information parameters into numerical attributes on the basis of the parameter numerical attribute extraction rule toconstitute a reasoning evaluation set; 3, setting a weight, calculating the local similarity of each accident feature parameter in the reasoning evaluation set and the overall similarity of the sample cases, and selecting a certain number of decision alternative cases; and 4, reconstructing emergency rescue parameter information of the stage of alternative cases with the highest similarity through comparison and giving the emergency rescue parameter information to the incident to be determined as an emergency aid decision making result. The invention can ensure the effectiveness and applicability of the emergency aid decision-making information to a certain extent, and improve the efficiency of emergency treatment.

The invention relates to an indicator system generation method based on an entropy weight method. Based on the safety management indicator system of the chemical enterprise, the method researches reasonable improvement and updating on the basis of the original indicator system to construct a new indicator system. The basis of improvement is that the historical chemical accident cases act as the analysis data according to the irrationality of the data reverse analysis indicator weight. The entropy weight method is not the algorithm of a large number of sample data assignment, the entropy weightmethod is adopted to evaluate the sample quality to form the sample weight, the weight of the safety indicator system is reversely analyzed and calculated on the basis of the data and the indicator weight is appropriately adjusted and updated. Reasonable and necessary modification is made according to the actual situation so that continuous improvement of enterprise safety supervision and safetyevaluation can be promoted and the risk avoidance can be better performed.

The invention discloses a short-term wind speed calculation method based on a hazardous chemical accident diffusion model. The short-term wind speed calculation method comprises the following steps of by combining an ABC (artificial bee colony) algorithm and a BP (back propagation) nerve network, optimizing the weight and threshold value of the BP nerve network by the ABC algorithm, accurately predicting the wind speed, and quickly and efficiently performing accurate evaluation on the influence degree and influence range of hazardous chemical leakage accidents in a chemical industrial park. Compared with a PSO-BP (particle swarm optimization-back propagation) nerve network and a GA-BP (genetic algorithm-back propagation) nerve network, the short-term wind speed calculation method has the advantages that the predicting accuracy is obviously improved, the high-efficiency predicting is realized, and the economic cost is reduced; the predicting accuracy on short-term wind speed is improved, and the error rate is only 1.82%; the site accidents can be effectively treated, the emergency rescue and high-efficiency population evacuation can be quickly performed, and the personal casualty and economic loss in the accidents are decreased.

The invention discloses a positioning and mapping method for a dangerous chemical accident environment by a mobile robot. The method is applied to a search and rescue mobile robot, positioning and mapping can be carried out on a complex dangerous chemical accident site, the illumination and smoke influence caused by dangerous chemical explosion and the like is weakened to a certain extent, and therobustness and precision of positioning and mapping under the accident occurrence condition are improved. The core of the method is that a space-time Markov random field method is used for carrying out image defogging processing; a stable monocular vision SLAM (Simultaneous Localization and Mapping) method based on a feature point method is adopted to fuse IMU sensor data to position and map a dangerous chemical accident by the mobile robot, and the environment exploration capability of the robot under the dangerous chemical accident condition is further improved.

The invention relates to an emergency operation method of a chemical accident, in particular to an emergency operation system of high-risk chemicals, belonging to the technical field of chemical defense. The system of the invention comprises a toxic and harmful substance monitoring analyzer, a weather observation instrument, a data transmission module, a GIS positioning navigation module, a source intensity mode module, a hazard forecast module, a diffusion mode module, a hazard early warning module, a hazard index system, a data conversion engine, a GIS analysis and exhibition module and an emergency command module. In the system of the invention, chemical hazard early warning levels are determined according to a hazard assessment result and the hazard index system; through the data conversion engine, the hazard assessment and GIS are integrated to build the emergency operation system based on a GIS platform; and according to early warning information, emergency control schemes are determined to achieve effective control on the chemical hazard.

The invention relates to the technical field of chemical accident emergency management and control, in particular to a chemical plant independent safety supervision system, which comprises a data acquisition unit for reading and storing chemical plant real-time monitoring data by a DCS of a chemical plant; a plan table editing unit used for editing and storing a plurality of plan tables; a serverused for analyzing the monitoring data of the chemical plant in real time, judging whether a safety accident occurs or not, calling out a matched plan table if the safety accident occurs, and connecting the plan table with the data acquisition unit and the plan table editing unit; and a display unit used for displaying a plan table corresponding to the safety accident, assisting in accident disposal and being connected with the server. The system has the substantial effects that the system can be widely applied to the field of safety management of petroleum, petrochemical engineering, chemicalenterprise devices and warehouse hazard sources; the system is independent of a DCS system of the chemical plant, the transformation and upgrading cost is low, and the safety monitoring level of thechemical plant can be effectively promoted.

The invention discloses a natural disaster secondary dangerous chemical accident risk assessment method and assessment system, and relates to the field of natural disaster secondary dangerous chemical accident risk assessment. According to the evaluation method, the risk grade of natural disaster secondary dangerous chemical accidents of enterprises and the risk grade of natural disaster secondary dangerous chemical accidents of chemical industrial parks are evaluated by determining main natural disaster causing factors, disaster-bearing body potential risks, disaster prevention and reduction capacity and the like of an evaluation area. And meanwhile, a visual accident risk map is generated according to an evaluation result of the accident risk of the natural disaster secondary dangerous chemicals. In combination with the natural disaster secondary dangerous chemical accident risk assessment method and assessment system, the natural disaster secondary dangerous chemical accident risk can be scientifically and accurately assessed, so that powerful technical support is provided for effectively carrying out natural disaster prevention and control work and management work for preventing secondary dangerous chemical accidents.

The embodiment of the invention provides a risk quantitative management method and system for a petrochemical production process in the technical field of petrochemical enterprise safety management,and the method is applied to a server, and comprises the steps: obtaining a risk list which comprises risk factors in a petrochemical production technology of a subordinate unit,wherein the risk factors comprise a control index deviation item which is related to the petrochemical production technology and can cause a chemical accident; determining dangerous events corresponding to the risk elements, and evaluating accident consequences corresponding to the dangerous events and accident frequencies corresponding to the accident consequences; determining a risk score corresponding to the petrochemical production process according to the accident consequence corresponding to each evaluated dangerous event and the accident frequency corresponding to the accident consequence; and quantifying arisk level corresponding to the risk score, and pushing the risk level and the risk score to a terminal. Therefore, quantitative and scientific guidance is realized for petrochemical safety managementpersonnel to carry out risk management work.

The invention relates to a chemical system multi-working-condition fault detection method based on local adaptive standardization and belongs to the technical field of chemical process monitoring, industrial data processing and process system engineering. According to the method, a local adaptive standardization method is provided, the variational automatic encoder technology of the deep neural network is applied, an average value of the data in the local moving window is calculated to serve as an average value parameter of local adaptive standardization, different average values are used fordifferent data, and the adaptive capacity is achieved. The method is advantaged in that local adaptive standardization processing is utilized, and fault detection is carried out by detecting whether the data in a local moving window deviates or not, and the method can be suitable for any working condition, has higher accuracy and stronger generalization ability, can meet the requirement of real-time detection, and avoids chemical accidents or reduces the harm caused by accidents through early warning of faults.

According to one aspect of the present invention, a virtual reality control system for providing a chemical accident response training content includes a sensor detecting a light signal, a display displaying an image, at least one controller controlling the display, and a simulator displayed as a valve in the image, wherein the controller is configured to acquire first position data related to the user and second position data related to the simulator based on the light signal, acquire first virtual position data indicating a character corresponding to the user and acquire second virtual position data indicating the valve, and display the character and the valve on the display and display a gas within a predetermined distance from the valve, wherein at least a portion of the gas is not displayed when the character moves while at least a portion of the character is in contact with the valve.

The invention provides an evaluation model for environmental risks of dangerous chemical accidents. The evaluation model is used for conducting multiple-factor analysis of environmental risks for environmental risk evaluation, evolution and forecast of dangerous chemical accidents. A combined qualitative and quantitative method is used, on the basis of analyses of key risk factors, dangerous chemicals, surrounding populations, related ecological environment and facilities and the like serve as a whole system, and uncertain environmental risk models which can facilitate risk communication are constructed from the viewing angle of the environmental carrying capacity, the exposure intensity, the degree of uncertainty and the like. A multi-scale environmental risk evaluation system is established to study environmental risk dynamic evolution laws and dynamic evaluation methods of dangerous chemical accidents. The migration and transformation laws of dangerous chemicals in the environment are studied to develop dynamic evaluation of environmental risks of dangerous chemical accidents.

The invention relates to a chemical accident classification method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring chemical accident information; denoising and expanding the chemical accident information by adopting a Chinese word segmentation algorithm and a dangerous chemical accident knowledge graph to obtain predicted accident information; wherein the dangerous chemical accident knowledge graph comprises a knowledge graph containing dangerous chemical domain knowledge and common knowledge; according to a fault tree corresponding to the predicted accident information, combining the predicted accident information to obtain an accident cause of the chemical accident; and classifying the chemical accidents according to the accident reasons to obtain the categories of the chemical accidents. The category of the chemical accident can be obtained in a targeted mode, a large number of manpower and material resources do not need to beconsumed, the limitation of expert knowledge experience in a single field and the one-sidedness of subjective consciousness are avoided, and therefore the credibility and reliability of an accident reason classification result are improved.

The embodiment of the invention discloses an electric power emergency disposal safety early warning method for hazardous chemical substance accidents. The method comprises the steps that basic attribute information and evaluation factor information of a dangerous chemical accident are acquired in real time; inputting the basic attribute information and the evaluation factor information into a hazardous chemical substance accident typical model, and determining a typical accident matched in the current hazardous chemical substance accident and the hazardous chemical substance accident typical model according to the basic attribute information; determining the similarity between the current hazardous chemical substance accident and the matched typical accident according to the evaluation factor information, and determining an early warning level corresponding to the current hazardous chemical substance accident; determining early warning information by a server system according to the early warning level of the current hazardous chemical substance accident; and receiving the early warning information sent by the system server by terminal equipment in real time. Compared with the prior art, the method has the advantages that the timeliness and accuracy of emergency safety early warning of the hazardous chemical substance accidents are improved, and support is provided for timely starting electric power emergency and accurately carrying out electric power emergency response in the hazardous chemical substance accidents.

The invention relates to a water hazardous chemical accident emergency aid decision-making method, terminal equipment and a storage medium. The method comprises the following steps: S1, constructing a case database; S2, extracting an attribute value of each characteristic parameter corresponding to cases according to the characteristic parameters of the set cases; S3, calculating the weight of each characteristic parameter based on a rough set dependency enhancement method; S4, classifying the cases in the case database, and calculating the class to which the target case belongs through a Bayesian model; and S5, according to the class to which the target case belongs, extracting all cases under the class in the case database, and according to the attribute value and the weight of each feature parameter corresponding to the case, calculating the global similarity between the target case and each extracted case, taking the case corresponding to the maximum global similarity as a similar case of the target case, and determining an emergency aid decision-making scheme of the target case according to the similar cases. According to the method, the problems of high difficulty, unscientific scheme and the like of a current decision scheme after a water hazardous chemical accident occurs are solved.

The invention relates to an electric power emergency disposal system for hazardous chemical substance accidents. The system comprises an accident monitoring system, an accident early warning system, an information platform system and a command system, the systems work cooperatively according to different stages of an accident, and when the accident occurs, the monitoring system monitors physical parameters of a hazardous chemical substance accident and operation parameters of an electric power system; the accident early warning system is used for judging the accident level according to the information of the monitoring system and sending accident early warning information according to a judgment result; the information platform system is connected with the accident monitoring system, the accident early warning system and the command system. The information platform system stores basic information of hazardous chemical substances, an electric power system, emergency rescue equipment andpersonnel and provides a decision basis for the command system according to a judgment result of an accident level and the basic information, and the command system is used for commanding the rescueequipment and the personnel to carry out emergency disposal.

The embodiment of the invention discloses a hazardous chemical accident electric power emergency disposal resource allocation processing method. The method comprises the steps of determining an electric power emergency demand list corresponding to a current hazardous chemical accident; receiving an emergency response instruction, reading name information of each emergency material in the electricpower emergency demand list, accessing the central electric power emergency resource database in real time, and obtaining latest inventory information of the current emergency material in the centralelectric power emergency resource database; and sending the latest inventory information of the current emergency materials in the central power emergency resource database to the terminal equipment.Compared with the prior art, the technical scheme provided by the invention can ensure smooth information interconnection and communication, ensures that relatively scattered emergency resources are continuously transported to a demand point (dangerous chemical accident occurrence place), and realizes efficient and rapid decision making.

The invention discloses a system and a method for quickly handling a dangerous chemical accident. An information processing center comprises a firewall module, an application server module, an alarm receiving module, an expert module and a data module. A communication base station is in communication connection with the firewall module, the firewall module is in communication connection with the application server module, and the application server module is in communication connection with the alarm receiving module, the expert module and the data module. The investment cost in dangerous chemical rescue is saved for users. A carry-on smart terminal is adopted, and on-site emergency personnel can consult the alarm receiving module for dangerous chemical information and disposal methods through the smart terminal, without the need to add any software or hardware. The system and the method have the advantages that the system and the method are not restricted by time and place; consulting is simple and quick; the system and the method are economical and practical, and the like.

The invention relates to a reaction device based on constant-temperature regulation and control. The device comprises a base, a stand column, a stirring connecting rod, a motor, a stirring rod, a temperature sensor, a reaction container, a water tank and a constant-temperature circulating tank, wherein the stand column is arranged on the base; one end of the connecting rod is connected with the stand column through a cross clamp. The other end of the connecting rod is connected with a motor; the output end of the motor is connected with one end of the stirring rod, the other end of the stirring rod is arranged in the reaction container, the temperature sensor is arranged in the stirring rod, the reaction container is arranged in the water tank, an outlet of the water tank is communicated with an inlet of the constant-temperature circulating tank through a pipeline, and an inlet of the water tank is communicated with an outlet of the constant-temperature circulating tank through a pipeline. According to the invention, the constant-temperature circulating tank and the water tank are separately arranged, and the constant-temperature circulating tank provides a solution with stable temperature for the water tank, so that the temperature in the reaction container is kept stable, the reaction rate is kept stable, the abnormal probability of a reaction system due to temperature changeis reduced, and the probability of chemical accidents is reduced.

The invention relates to a spectrum construction method and device, an accident classification method and device, computer equipment and a medium. The spectrum construction method comprises the following steps: constructing an ontology structure according to a logic association relationship between metadata, wherein the metadata comprises words representing at least two of dangerous chemical names, dangerous chemical categories, dangerous characteristics and dangerous characteristic inducements; clustering the corpus data of the chemical accident to obtain at least one cluster; wherein each clustering cluster comprises a plurality of words with a feature association relationship, and the feature association relationship comprises at least one of a similar association relationship, an opposite association relationship and a causal association relationship; and associating the clustering cluster with metadata in the ontology structure according to the feature association relationship toobtain the chemical accident knowledge graph. By adopting the method, the accuracy of the constructed chemical accident knowledge graph can be improved, and huge manpower and time costs for constructing the chemical accident knowledge graph are avoided.

The invention discloses a natural cybernetics-based nuclear and chemical accident emergency optimizing control method, which belongs to the field of hazard control. The method comprises the following steps: firstly, performing prediction and pre-warning on a nuclear and chemical accident; and on the basis of the prediction on the consequence of the nuclear and chemical accident, developing a natural cybernetics-based optimizing control scheme. The natural cybernetics-based nuclear and chemical accident emergency optimizing control method disclosed by the invention has the advantages of fulfilling the aim of performing emergency control on the nuclear and chemical accident, minimizing cost paid by the control, and accidental loss and realizing optimal emergency control of the nuclear and chemical accident.

The invention relates to the technical field of chemical equipment, in particular to a safe distillation tower device for ethanol extraction. The device comprises a first supporting seat, wherein a distillation still is fixedly arranged above the first supporting seat through bolts, a butt joint seat is integrally formed above the distillation still, and a distillation tower main shell is fixedlyarranged above the butt joint seat through bolts. The safe distillation tower device of the invention has the beneficial effects that a designed safe distillation tower structure can be controlled bya first controller and a second controller together to respond to faults in time, so when the pressure in the distillation tower main shell is increased violently, the power supply of a heater can becut off in time, and ethanol steam in the distillation tower main shell and the distillation still can be cooled in time to realize rapid pressure reduction, the phenomenon that the distillation towermain shell is broken and serious chemical accidents are incurred due to sudden pressure change caused by out-of-control temperature adjustment of the heater under various reasons can be effectively avoided, and the property safety of a factory and the personal safety of workers are effectively guaranteed.