38 results about "Inherent safety" patented technology

The invention belongs to the technical field of stage equipment boundary safety protection control, and particularly relates to a variable constraint control method for stage equipment based on risk perception and a dynamic safety domain. The characteristic that stage equipment is usually in a fixed application scene in the performance process is utilized, the inherent safety level and active protection capacity of a stage equipment system are greatly improved through tight combination of real-time collection and variable constraint, and therefore safer, more accurate and more smooth control is achieved. According to the method, a construction algorithm is embedded in software, a dynamic region division and segmentation threshold adjustment strategy is utilized, and a multi-stage braking redundancy cooperation mechanism is triggered, so that the anti-interference capability and fault tolerance performance of the control system are effectively enhanced, the implementation cost is low, a large amount of manpower and material debugging can be saved, and the system is suitable for large-scale popularization and application. And a high-precision and high-robustness safety control scheme is provided for large stage machinery such as a seat vehicle platform and a rotating stage.

This invention discloses an auxiliary device for the maintenance of an electrically heated crossarm, relating to the field of safe operation assistance technology. It includes a first platform, a second platform, and a fixing device. The first platform has a lower surface adapted to the upper part of the electrically heated crossarm, allowing it to rest on the upper surface of the crossarm. The first platform includes a front, middle, and rear section extending sequentially. The fixing device is installed at the rear of the first platform to secure it to the electrically heated crossarm. The second platform is connected to the front of the first platform via a connecting assembly, ensuring that the second platform is at a lower horizontal height than the first platform and located at the end of the electrically heated crossarm. This invention solves the technical problems of high safety risks and low work efficiency during online maintenance and cable removal / installation of electrically heated water-cooled crossarms, reduces labor intensity, improves the inherent safety level of equipment maintenance, protects the lives and property of employees, and provides reliable equipment operation support for the stable production of high-end steel grades.

The application discloses a kind of liquid metal cooling pool type reactor multifunctional passive residual heat removal systems based on heat pipe, belongs to reactor system component design technical field, the system is by high-temperature heat pipe, main container wall pit, gas storage tank, storage tank valve, gas heater, gas output pipe, gas input pipe, air extractor, safety container, main container, reactor pit, cold air descending passage, cylindrical thermal insulation layer, hot air ascending passage, connecting pipeline, exhaust chimney, heat radiation plate and in-pile fixed facility composition.The application can be in the condition of reactor total plant power failure, main heat exchanger water interruption and earthquake and other accident conditions, start passive accident residual heat removal system, and the residual heat of reactor core is removed to final heat sink by high-temperature heat pipe.Reactor is in low-power operation or shutdown condition, and auxiliary heating is carried out to in-pile liquid metal, to ensure that coolant is in molten state and promote flow.The system structure is simple, and has independence, passivity, inherent safety.

This invention discloses a dynamic control system for hazardous sources in manufacturing sites based on the Industrial Internet of Things (IIoT), relating to the field of industrial automation control and safety monitoring technology. The system collects comprehensive monitoring data through a multi-dimensional element sensing unit; a spatiotemporal synchronization processing unit constructs a dynamic spatiotemporal data cube; a nonlinear risk coupling analysis unit uses a coupling model to calculate a comprehensive risk index and identify hidden risks; a hierarchical early warning decision unit generates different levels of instructions based on the index; and a physical-level rigid execution unit achieves closed-loop control through audible and visual alarms, process parameter adjustments, and power cutoff. This invention solves the problems of a single evaluation mode, neglect of coupling effects, and lack of rigid control in response, achieving accurate identification and physical-level safety interception of dynamic hazardous sources, greatly improving the inherent safety level and response efficiency of the manufacturing site.

The invention relates to the technical field of nuclear reactors, in particular to a control rod, a lead-based fast neutron high-flux research reactor and an experimental method thereof. Wherein the research reactor comprises a reactor container, a supporting platform, a shielding layer, a reactor lower chamber, a guide pipe and a control rod; a fuel assembly is arranged in the reactor container; one end of the guide pipe is located in the reactor container and is of a sealed structure, the length direction of the guide pipe is parallel to the length direction of the fuel assembly, the other end of the guide pipe sequentially penetrates through the reactor container, the supporting platform, the shielding layer and the under-reactor chamber and is located in the under-reactor chamber, and a driving mechanism matched with the guide pipe is arranged in the under-reactor chamber; the control rod is located in the guide pipe and can be driven by the driving mechanism to move in the length direction of the guide pipe. In a working state, the height of one end of the sealing structure of the guide pipe is not lower than that of the fuel assembly. According to the invention, the control rod can be installed, enough top space is reserved for the reactor vessel, and the reactor vessel has inherent safety characteristics.

The invention provides a chemical dosing room safety protection system and a use method thereof. The chemical dosing room safety protection system comprises an environment monitoring module, a ventilation control module, a spraying and eye washing module, a central control unit, an alarm and warning module and a remote monitoring platform. The system monitors environmental parameters in real time through multiple sensors, automatically starts protection measures such as ventilation and spraying based on a preset threshold value, and realizes intelligent linkage control. According to the invention, a safety protection system integrating risk perception, intelligent decision and active protection is constructed, early warning and rapid automatic response to toxic gas leakage can be realized, and the emergency processing efficiency is significantly improved. Meanwhile, through remote monitoring and data recording functions, digitization and traceability of safety management are achieved, the intrinsic safety level of a chemical dosing room is effectively improved, and personnel health and production safety are guaranteed.

This invention discloses a safety monitoring and management system for trackless rubber-wheeled vehicles equipped with explosion-proof lithium-ion batteries used in mining, belonging to the field of explosion-proof mining machinery and equipment technology. It includes modules for comprehensive data acquisition, risk mode definition, working condition identification and activation, cross-subsystem interactive testing, dynamic resilience mapping construction, and decision execution. This invention employs an explosion-proof power supply with individual large-capacity battery cells connected in series and an integrated explosion-proof electronic control architecture. By performing specific risk exploration and mild interactive testing across subsystems, it constructs a dynamic resilience map that quantifies safety boundaries and implements resilience adaptation and gradient guidance strategies. This invention can solve the problems of insufficient monitoring depth in traditional systems and the risk of slope slippage in gas environments, improving the inherent safety level, range, and inspection efficiency of vehicles, and providing reliable support for intelligent mine auxiliary transportation.

The invention discloses a solid gain medium fission fragment pumping method and a pumping unit, nuclear fuel fission fragments are used as a pumping source, a solid laser gain medium is used for generating laser, and the solid laser gain medium is a semiconductor laser gain medium. The nuclear fuel fission fragments are used as a pumping source for driving, and the nuclear fission fragment pumping unit for generating laser by a solid laser gain medium is adopted, so that the inherent safety characteristic is ensured, the long endurance is ensured, and the reactor core safety of the energy technology in the unmanned operation process is ensured.

This invention relates to the field of intelligent building construction technology, specifically disclosing an intelligent generation system for modular scaffolding erection schemes. The system includes an engineering geometric parameter analysis device, a wind field dynamic simulation device, a physical information neural network prediction device, a wind-resistant reinforcement zone generation device, and a real-time meteorological data access device. By integrating computational fluid dynamics with a neural network embedded with physical constraints, based on a three-dimensional building model and real-time meteorological data, it dynamically predicts wind-induced vibration risks and automatically generates wind-resistant reinforcement schemes conforming to the modular rules of scaffolding. By employing the above technical solution, this invention enables high-precision wind vibration early warning and intelligent optimization of scaffolding systems in extreme environments such as super high-rise buildings or cross-sea structures, improving their inherent safety level and construction feasibility.

This invention discloses a precision ventilation device and method for cleaning the interior of tank trucks, belonging to the field of industrial safety and environmental protection technology. It aims to solve the technical problems of dead zones, low efficiency, and high safety risks associated with manual operation in traditional methods for ventilation of the area behind the baffle plate inside tank trucks. The device includes a vertical extension section, a rotating section, a horizontal extension section, and a ventilation operation section. The horizontal extension section includes a scissor mechanism that can extend deep into the tank, with the intake and exhaust pipes fixed thereon. The method involves a coordinated action of vertical downward positioning, horizontal rotation alignment, and scissor extension to drive the pipeline directly through the baffle plate holes to reach the deepest part of the tank for gas replacement. This invention achieves efficient ventilation without dead zones inside the tank; it is entirely pneumatically driven, eliminating electrical sparks and ensuring inherent safety; and the device is foldable, adaptable to different tank truck sizes, and highly versatile.

The invention relates to a design method of an alkaline hydrogen production bubble orthogonal separation electrolytic bath, which comprises the following steps: forming a sunken concave area on one side, deviating from a reaction electrode, of a hydrogen side porous bipolar plate and an oxygen side porous bipolar plate through machining; outer side main gas chambers are further arranged on the sides, deviating from the reaction electrodes, of the hydrogen side porous bipolar plate and the oxygen side porous bipolar plate, a full-flow-channel structure is formed between the inner side faces of the oxygen reaction electrode and the oxygen side porous bipolar plate, and an anode auxiliary gas chamber is formed; a full flow channel structure is formed between the hydrogen reaction electrode and the inner side surface of the hydrogen porous bipolar plate to form a cathode auxiliary gas chamber; a pore array is arranged on the hydrogen side porous bipolar plate and the oxygen side porous bipolar plate in a penetrating manner; and the design of the alkaline hydrogen production bubble orthogonal separation electrolytic cell is completed. According to the electrolytic cell designed by the invention, formation of local hot spots is avoided, the internal safety of operation of the electrolytic cell is improved, and the service life of the core assembly is prolonged.

The invention discloses a large automatic lifting feeding and taking charging car and a control method thereof.The charging car comprises a bottom skip car, an operation platform and a material platform are arranged on the bottom skip car, a control box is arranged on the operation platform, the control box is in signal connection with an upper computer, the operation platform is located at one end of the material platform, and the material platform is located at the other end of the material platform. The material platform comprises an upper lifting skip car, an up-down lifting mechanism and a left-right translation mechanism, the upper lifting skip car is installed on the bottom skip car through the up-down lifting mechanism and the left-right translation mechanism so as to achieve up-down lifting and front-back translation movement of the bottom skip car, and the method comprises the steps of task receiving and global planning; taking the materials; according to the invention, intrinsic safety is realized, the risk of high-risk manual operation is completely eradicated, the operation efficiency is greatly improved, high precision and strong self-adaptive capability are achieved, and the charging quality is guaranteed.

This invention discloses a control system for an automated live-line working equipment manipulator, comprising: a manipulator body and control components; the manipulator body includes: a first ring-holding cylinder, a second ring-holding cylinder, a first clamping cylinder, and a second clamping cylinder; the first and second ring-holding cylinders are used to connect a pair of ring-holding manipulators, and the first and second clamping cylinders are used to connect a pair of clamping manipulators; the control components include: a first three-position four-way explosion-proof solenoid valve, a second two-position three-way explosion-proof solenoid valve, a second three-position four-way explosion-proof solenoid valve, a first balance valve, a first accumulator, a third three-position four-way explosion-proof solenoid valve, a second balance valve, and a second accumulator. This invention enables the automatic grabbing, conveying, and wellhead centering of the working tubing under unmanned operation conditions at the wellhead, solving the safety risks associated with traditional live-line working equipment requiring operators to be concentrated above the wellhead, effectively improving the equipment's operational efficiency and inherent safety.

The invention relates to a lithium tantalate super-structure surface focused ion beam processing method based on a stripping layer. (1) cleaning; (2) depositing a stripping layer; (3) depositing a Cr-Pt co-sputtering mixed mask on the stripping layer; (4) carrying out annealing treatment and etching the surface of the metasurface; and (5) safely stripping the Cr-Pt co-sputtering mixed mask, and cleaning to finish the processing of the device. According to the method, the inherent highly toxic and highly corrosive safety risks of the traditional process are completely eliminated, a remarkable safety guarantee is provided for research, development and production environments, and system experiments verify that the removal efficiency and key processing precision indexes reach and are even superior to those of the traditional method, so that the removal efficiency and key processing precision indexes of the traditional method are improved while potential safety hazards are eradicated. Structural fidelity and processing precision necessary for the lithium tantalate photonic device are perfectly ensured, and a reliable technical path with safety and high performance is provided for high-precision and extensible large-scale manufacturing of the lithium tantalate photonic device.

The invention relates to a projection lamp and method for an underground coal mine, and belongs to the technical field of intelligent illumination and information projection for the underground coal mine. The technical problems that traditional underground lighting equipment can only provide environment floodlight and cannot dynamically project graphical information, and a universal projector is poor in adaptability, low in safety and prone to causing image blurring in the underground high-dust, humid and vibration environment are solved. According to the technical scheme, the projection lamp is provided, the projection lamp is provided with an anti-explosion shell, an optical projection module, an image generation and control module, an environment sensing module and a power supply and communication module, image parameters are dynamically optimized through environment sensing data, and clear projection is achieved. The technical effects are that the underground information transmission mode is innovated, the environmental adaptability and intrinsic safety are improved, the intelligent integration capability is enhanced, and the long-term operation and maintenance cost is reduced.

This disclosure presents a construction site safety risk early warning method and device, electronic equipment, and storage medium. Through this application, by integrating real-time sensing data from the construction site, linking it with the building information model and the current construction progress to dynamically assess risk sources and levels, and using artificial intelligence models to identify personnel and equipment violations or entry into dangerous areas in real time, and executing graded early warnings and even equipment interlocking controls according to the risk level, a closed-loop safety management and control system of pre-judgment and in-process intervention is constructed. This achieves the technical effect of eliminating blind spots in construction site safety inspections, realizing real-time identification and graded handling of risk sources and violations, improving the timeliness and accuracy of safety management and control, reducing the probability of safety accidents, and thus meeting the technical requirements of improving the inherent safety of the construction industry.

The present application relates to a kind of medical isotope production base reactor planning limit area determination method, with the center of single reactor pressure vessel in multiple reactor as origin, the outer boundary radius of multiple reactor planning limit area is determined;Within the outer boundary radius of planning limit area, the accident analysis is carried out to multiple reactor, and the source term reference value of each reactor is adjusted based on inherent safety correction coefficient;Using linear superposition mode, the source term of multiple reactor is superposed, and the superposition source term is obtained;According to superposition source term, the corresponding atmospheric dispersion state of multiple reactor is determined, and multiple-dimensional consequence evaluation index is obtained;Based on multiple-dimensional consequence evaluation index, the outer boundary radius of multiple reactor planning limit area is iteratively adjusted until multiple-dimensional consequence evaluation index meets preset threshold, and the boundary of planning limit area is determined.The present application realizes scientific quantification of radiation influence under normal operation and accident condition, and solves the problem that traditional method has poor adaptability and insufficient evaluation accuracy.

The invention provides a reactor core of a thorium-based lead-cooled small modular reactor and a design method. The whole reactor core is of a cylinder structure; the reactor core adopts thorium-based fuel, takes martensite heat-resistant steel as a reactor core structure material, and takes a lead-bismuth coolant as a reactor coolant; the fuel rods and the control rods are arranged in the hexagonal grid so as to be arranged in the active reactor core area; the reactor core control system adopts boron carbide as an absorbing material; outside the active reactor core area, lead is used as a reflecting layer, and martensite heat-resistant steel is used as a shielding layer. Efficient and safe combination of thorium-uranium fuel circulation and a lead-bismuth coolant can be realized, so that an inherent safe compact reactor core is formed, and the possibility of melt-down of the reactor core is fundamentally eradicated; through the optimized physical design of the reactor core, autonomous operation with a long life cycle is realized, the number of refueling times is reduced, and operation and maintenance are simplified.

The invention provides a small vehicle-mounted reactor passive residual heat removal system and method and a small vehicle-mounted reactor. The removal system comprises at least two groups of parallel heat exchange runners, each group of heat exchange runners comprises a residual discharge pipe, an inlet isolation unit and an outlet isolation unit, the inlet isolation unit and the outlet isolation unit are arranged at the two axial ends of the residual discharge pipe, and the residual discharge pipe is vertically arranged along a reactor cabin and penetrates through the reactor cabin; the inlet isolation unit and the outlet isolation unit are respectively used for controlling the on-off of the residual discharge pipe; when the inlet isolation unit and the outlet isolation unit are in an open state, external air at the bottom of the reactor cabin is conveyed upwards through the residual discharge pipe and flows through the heat exchanger in the reactor cabin, and the heated air is conveyed upwards to the outside of the reactor cabin. According to the passive residual heat removal system for the small vehicle-mounted reactor, the residual heat or decay heat of the reactor core can be reliably guided out in the starting and stopping stages of the vehicle-mounted reactor and under the accident working condition, the reactor core is prevented from being overheated, and the inherent safety and environmental adaptability of the operation of the vehicle-mounted reactor are remarkably improved.

The invention discloses equipment for producing high-strength steel through thin-strip cast rolling and a production process, and belongs to the technical field of metal material machining. The following functional units of a thin strip continuous casting unit, a sealing secondary cooling and guiding unit, an on-line hot rolling unit, an on-line mechanical descaling and surface treatment unit, a first finishing and hot coiling unit, an inlet buffering and connecting unit and an on-line cold rolling unit are sequentially arranged in series in the advancing direction of the equipment. The online slinging and descaling unit is adopted to completely replace a traditional hydrochloric acid pickling process, oxide scales on the surface of strip steel are removed in a physical and mechanical mode, and the problems of unorganized discharge of acid mist, generation of waste acid liquor and subsequent expensive treatment of the acid mist are completely eradicated from the source; the production site is environment-friendly, zero generation of waste water and waste gas pollution is realized, inherent quality defect risks such as hydrogen embrittlement, over-pickling / under-pickling and the like in the pickling process are thoroughly avoided, and the intrinsic safety and quality consistency of the product are improved.

This invention provides a method and system for scheduling equipment systems based on unmanned coal mining, relating to the field of equipment scheduling technology. By integrating safety level classification, multi-source data-driven conflict identification, and dynamic priority scheduling mechanisms, this invention achieves an organic unity of safety, intelligence, and efficiency. On one hand, it establishes an evaluation matrix based on historical risk cases, classifies equipment into safety levels according to the severity of failure consequences, and presets conflict coefficients. When a conflict occurs, it dynamically increases the conflict coefficient of high-risk equipment based on real-time scenarios, significantly improving the inherent safety level of the system. On the other hand, it relies on an industrial cloud platform to clean and analyze the location, status, and environmental data collected by sensors, accurately identifying logical conflicts where multiple devices compete for exclusive resources. It then uses a rolling, updated priority sequence to guide path planning, task timing, and energy allocation, achieving distributed collaborative control of "cloud decision-making—side execution."

This invention relates to the field of heat exchangers and discloses a heat exchanger that can reduce pipe wear, including a housing. Heat exchange tubes are installed inside the housing. An inlet and a outlet are respectively located at the front and rear ends of the housing. Leak-proof components are installed at both ends of the heat exchange tubes. An anti-wear component is fixedly installed at the end of the anti-leak-proof component furthest from it. This invention provides a heat exchanger that modularly integrates the anti-wear and leak-proof components at the pipe inlet, forming a comprehensive protection mechanism that integrates active flow guidance and speed reduction, leak detection, water pressure-driven positioning, and mechanical self-locking sealing. It adopts a purely mechanical structure, requiring no external power throughout the entire process, achieving full-cycle autonomous management from daily protection to emergency response. Its modular built-in design combines strong adaptability and ease of installation, making it compatible with various heat exchangers and fundamentally improving the inherent safety level of the equipment.

This invention provides a real-time monitoring and early warning method and device for crane hooks based on multi-source data fusion, relating to the field of artificial intelligence technology. It adaptively segments the real-time monitoring sequence based on the velocity envelope fluctuation intensity of the lifting height sequence, avoiding feature aliasing caused by start-stop, speed change, and other operations. Based on the sampling point differential sequence, data from each channel is coupled, quantifying the intensity of synchronous changes between load, lifting, and oscillation into comparable anomaly sensitivity indicators. Based on the difference in motion trends between the coupling characteristics and the aforementioned segmented characteristics, a trend matrix and a residual matrix are decomposed. This allows the separation of the operator's active operational intent from the normal inertial motion of the load, enabling the residual matrix to centrally reflect abnormal fluctuations such as mechanical clearance and elastic oscillations. The model can effectively distinguish between normal fluctuations and early hidden dangers under strong dynamic and interference environments, achieving adaptive, high-sensitivity, and low-false-alarm-rate real-time anomaly identification, ensuring the inherent safety of lifting operations.

The invention discloses an automatic solid and liquid sampling device for a production line, which relates to the technical field of sampling equipment and comprises a rack assembly, a swing arm moving assembly and a balance assembly. The rack assembly comprises a base, a stand column and a driving piece. The swing arm moving assembly comprises a first main arm, a second main arm, a swing part, a receiving hopper and an unloading part. One end of the swinging part away from the second main arm is connected with the driving part; the balance assembly comprises balance rod sets. The driving part rotates to drive the swing part to swing towards or away from the stand column, so that the receiving hopper is driven to move towards or away from the stand column, receiving or discharging operation is conducted after the receiving hopper moves, the levelness of the receiving port during receiving is kept through the balance rod set, sampling precision is guaranteed, manual sampling is completely replaced, and the sampling precision is high; direct contact between personnel and operation equipment is avoided, safety risks are remarkably reduced, the intrinsic safety level of a production line is improved, production efficiency is remarkably improved, and labor cost is reduced.

This application provides an integrated control system and method for the safe storage and use of liquid ammonia. The system, by setting up an emergency unit for liquid ammonia storage, automatically lowers the liquid ammonia cylinder into a water tank using a lifting support frame upon detection of an ammonia leak. This achieves rapid and automatic submersion cooling and dilution absorption of the leak source at its source, significantly shortening emergency response time and substantially improving the system's inherent safety level and the efficiency of leak emergency handling. By incorporating a waste gas purification unit including an ammonia cracking tank, ammonia-containing tail gas is efficiently decomposed under high temperature and catalyst conditions, achieving thorough purification and safe treatment of the waste gas. Through a safety interlock control unit, multiple safety aspects, including explosion-proof isolation, leak detection, emergency response, pipeline shut-off, and waste gas purification, are organically integrated into a coordinated whole, achieving automated safety management throughout the entire process. This improves the reliability and efficiency of the overall emergency response and realizes integrated and coordinated control of the system.

The application discloses a kind of aerodynamic layout design methods for eVTOL aircraft, comprising: top-level performance requirement is decomposed into the aerodynamic design index of rotor, transition and fixed-wing mode;Determine the number of rotors, diameter constraints and layout forms based on index, get the initial configuration of rotor system;Safety control analysis is carried out on the configuration in the event of rotor failure, if it meets the requirements, then lock the rotor parameters and the mass center allowable range adapted, otherwise return to adjust configuration;Based on the locked parameters, the aerodynamic integration design of fuselage, wing and tail is carried out, and the preliminary shape scheme is obtained, and the full-mode aerodynamic characteristic analysis is carried out on the complete layout;Compare the analysis results with the initial index, if all meet, output the final layout, otherwise return to optimize the shape scheme until the standard is reached. By prepositioning safety analysis and constructing closed-loop iterative process, the inherent safety and comprehensive performance of the aircraft are significantly improved, and the problems of difficult to balance safety and performance and high design iteration cost are solved.

The application provides a thermoacoustic nuclear reactor system, which comprises a nuclear reactor, a plurality of thermoacoustic engine units, a resonant tube and an energy conversion device, the plurality of thermoacoustic engine units are arranged in the nuclear reactor in a direction parallel to the central axis of the nuclear reactor, the two ends of each thermoacoustic engine unit are communicated with the two ends of the resonant tube to form a loop, the thermoacoustic engine unit can convert the heat energy of the nuclear reactor into mechanical energy and transmit along the extension direction of the resonant tube, the input end of the energy conversion device is connected with the resonant tube, and the output end of the energy conversion device is used for being connected with an energy collection device; the working gas in the thermoacoustic engine unit is used for taking out the heat in the nuclear reactor and converting the heat into mechanical energy, and then the mechanical energy is converted into other energy by the energy conversion device, so that the structure is simple, the energy conversion efficiency can be effectively improved, and the inherent safety is high.

The invention provides material transfer equipment and a transfer method, and belongs to the technical field of graphitization furnaces, the material transfer equipment comprises a track, a transfer trolley, a material storage tank, a cooling device and a connecting device, the material storage tank is matched with the built-in cooling device, and active temperature control can be started immediately after high-temperature materials are received; the thermal stress damage caused by disordered heat dissipation in the material transferring process is effectively restrained, and meanwhile thermal protection is provided for an equipment body. The opening and closing device and the connecting device are arranged at the feeding hole, so that the rapid and reliable sealing connection between the feeding hole and the discharging pipe of the graphitization furnace can be ensured, and the high-temperature material flow possibly accompanied by dust is completely sealed in the system to be transferred. According to the embodiment, a traditional open and intermittent high-temperature material treatment mode is changed, discrete and dangerous discharging operation is converted into a continuous and controllable logistics link, and the intrinsic safety of operation and the cleanliness of the environment are remarkably improved.

This invention discloses a public environment safety and emergency avoidance system, relating to the field of fire safety technology, comprising the following steps: S1, hardware deployment; S2, information pre-configuration; S3, real-time data acquisition and monitoring; S4, scenario-based emergency handling; S5, personnel identification; S6, dual-route guided rescue. This public environment safety and emergency avoidance system, through high-frequency real-time acquisition and threshold comparison of electrical circuit current, voltage, temperature, and other data using digital circuit breakers, can achieve rapid and accurate identification of electrical anomalies. Combined with automatic power-off and physical area positioning functions for abnormal circuits, it effectively curbs the escalation of electrical overload, leakage, and other hazards into fire accidents, avoids the blindness of traditional electrical fault diagnosis, significantly shortens the response time for handling electrical safety hazards, and improves the inherent safety level of public environment electrical systems.

This utility model discloses a mortar mixing tank bottom pipe cleaning device, including a bottom pipe. An air distribution ring is arranged on the outer side of the bottom pipe, and multiple blowing pipes are evenly arranged on the inner side of the air distribution ring. One end of each blowing pipe is connected to the air distribution ring, and the other end extends into the bottom pipe and is inclined towards the discharge end. A main air supply pipe is connected to the outer side of the air distribution ring, and a solenoid valve is installed on the main air supply pipe. Compared with manual cleaning of the bottom pipe during the mixing tank's operation, using this device can significantly reduce labor intensity, reduce mechanical injuries caused by manual cleaning of the bottom pipe during mixing tank operation, and improve the inherent safety level on site. Furthermore, the device has a simple structure, low cost, and is easy to process and promote in work areas.