508results about How to "Avoid fire" patented technology

The invention relates to the technical field of power distribution cabinets, and discloses a power distribution cabinet with a self-adaptive environment adjusting mechanism, and the power distribution cabinet comprises a cabinet body which is used for fixing and supporting internal electrical elements; the automatic dehumidification assembly is mounted on the outer side of the cabinet body and is used for dehumidifying the cabinet body when detecting that the moisture content in the cabinet body is too high; the cleaning assembly is installed on one side of the cabinet body and used for conducting anti-blocking treatment on a filter screen arranged outside the cabinet body, and the driving assembly is installed outside the cleaning assembly and used for driving the cleaning assembly. By adding the automatic dehumidification assembly, the humidity in the power distribution cabinet can be effectively reduced, and the risk of electrical short circuit caused by a humid environment is reduced. By discharging moisture, safe operation of electrical equipment is guaranteed, and fire and electric shock accidents caused by moisture are avoided. And meanwhile, corrosion and aging processes can be slowed down, the service lives of the power distribution cabinet and internal components are remarkably prolonged, and the maintenance and replacement cost is reduced.

The invention relates to the technical field of fuel gas safety, and discloses an intelligent fuel gas safety valve and a method for intelligently opening and closing the safety valve, and the intelligent fuel gas safety valve comprises a sensor unit which is configured to be installed near a fuel gas pipeline or fuel gas equipment; the control unit is in communication connection with the sensor unit; the execution unit is in communication connection with the control unit; the communication unit is in communication connection with the control unit; and the standby power supply is used for providing emergency power for the intelligent gas safety valve when the main power supply fails or is powered off. The concentration, the pressure, the temperature and the flow of the fuel gas are monitored in real time through the sensor unit, the system can quickly send out an instruction for closing the valve when detecting abnormal conditions (such as gas leakage and too high or too low pressure), and accidents such as fire disasters or explosions caused by fuel gas leakage are effectively prevented. The system monitors a plurality of key parameters of the gas system through a plurality of sensors in a combined mode, and a multi-level safety guarantee mechanism is formed.

The invention discloses a chemical gas leakage detection management method and system, and relates to the technical field of chemical gas leakage detection, and the method comprises the following steps: determining a detection region and the gas type and characteristics of the detection region, collecting the environment data of the chemical detection region, constructing an environment parameter database, carrying out the preprocessing according to the collected environment data, and obtaining a detection result. The method comprises the following steps: analyzing environmental data influencing gas leakage detection to obtain an environmental data analysis sequence table, configuring detection equipment according to the environmental data analysis sequence table, establishing a data acquisition system and an anomaly detection mechanism, and collecting detection data and identifying anomaly detection data in the detection data by utilizing the detection equipment. The gas concentration in the environment is monitored in real time, abnormal conditions are rapidly detected, an alarm mechanism is triggered, a leakage source is found and controlled in time, the emission amount of harmful gas is reduced, the time difference from leakage occurrence to detection is shortened, and safety accidents such as fire disasters and explosions are effectively prevented.

The invention belongs to the technical field of battery maintenance, and discloses a new energy automobile battery maintenance device which comprises a base, mounting grooves are formed in the upper surface of the base at equal intervals, clamping grooves are symmetrically formed in the front side and the rear side of the bottom of each mounting groove, a mounting shell is fixedly mounted on the upper surface of the base, and a plurality of guide grooves are formed in the upper surface of the mounting shell at equal intervals. Side grooves are symmetrically formed in the side faces of the guide groove, and electric heating plates fixedly sleeve the middles of the front side groove and the rear side groove. Mercury in the telescopic sleeve is heated to expand, so that the expanded mercury in the telescopic sleeve pushes the telescopic end of the telescopic sleeve to move upwards, the telescopic end of the telescopic sleeve drives the heat conducting plate to move upwards through the electric plate to be in contact with the heat dissipation plate, and at the moment, the heat dissipation plate dissipates heat of the battery through the sleeve column and the heat conducting plate; therefore, the problems that the charging and discharging efficiency of the battery is low and the service life is shortened when the battery works in a high-temperature or low-temperature environment are solved.

The invention relates to a battery module capable of effectively preventing thermal runaway diffusion, a protection method of the battery module and an energy storage device. The battery module comprises an upper shell, a lower box body, a battery module, a pressure relief flow guide part, a panel structural part and a CCS assembly, the upper shell and the lower box body form a containing cavity; at least one group of battery modules are arranged in the accommodating cavity; the battery module comprises at least one battery monomer, the battery monomers are connected in series, a safety valve is arranged on each battery monomer, and a pressure relief flow guide part is arranged above the safety valve; a panel structural member is arranged at one end of the battery module along the arrangement direction of the battery monomers; and a CCS assembly is arranged above the battery module. According to the invention, gas and electrolyte can be separated after the single battery is sprayed, and are respectively and directionally discharged, so that the situation that other normal single batteries or modules are damaged due to disordered splashing of sprayed objects is avoided, and spontaneous combustion or explosion of the battery module is avoided.

The invention relates to the technical field of coatings, and discloses a modified hexagonal boron nitride and organic silicon double-component doped high-flame-retardant epoxy resin powder coating as well as a preparation method and application thereof. Comprising the following raw materials in parts by weight: 25-50 parts of modified hexagonal boron nitride, 90-110 parts of organic silicon resin, 120-150 parts of epoxy resin, 5-8 parts of dicyandiamide, 100-120 parts of silica powder, 8-12 parts of other auxiliaries and 80-100 parts of filler. The flame-retardant epoxy resin powder coating is prepared by uniformly mixing the components, melting, extruding a sheet material, grinding and sieving. The flame-retardant and fireproof performance of the epoxy resin powder coating is greatly improved in a modified hexagonal boron nitride and organic silicon double-component doping mode.

The embodiment of the invention provides a heat management device and an energy storage cabinet. The heat management device is used for the energy storage cabinet and comprises a first loop unit, a second loop unit, a multi-way valve and a phase change heat storage unit. The first loop unit comprises a first heat exchange pipeline, and the first heat exchange pipeline is used for exchanging heat with an energy storage device of the energy storage cabinet; the second loop unit comprises a second heat exchange pipeline; the phase change heat storage unit comprises a first flow channel, a second flow channel and a phase change part, the first flow channel can selectively communicate with the first heat exchange pipeline through a multi-way valve, and the second flow channel directly communicates with the second heat exchange pipeline; the phase change part is in heat conduction contact with the first flow channel and the second flow channel. The heat management device is arranged, and the phase change part is in heat conduction contact with the flow channel, so that efficient heat exchange between the phase change material and the cooling liquid in the flow channel can be realized. When the temperature of the cooling liquid in the flow channel rises, the phase change material absorbs heat and generates phase change, and vice versa, so that the temperature fluctuation in the flow channel is balanced.

The invention relates to the technical field of photovoltaic modules, in particular to a photovoltaic module control method and device. The method comprises the following steps: obtaining an installation position according to design data of the photovoltaic module, carrying out illumination intensity change measurement, and further evaluating the luminous flux change of the photovoltaic module; on the basis of the luminous flux change data, calculating the generating capacity fluctuation of the photovoltaic module, further performing power quality attenuation evaluation, and extracting power grid transmission voltage fluctuation data; according to the power grid voltage fluctuation and power quality attenuation data, the battery overcharge condition and the battery life attenuation are evaluated, the battery capacity attenuation is further calculated, and the photovoltaic module system efficiency attenuation is evaluated; by analyzing system efficiency attenuation data, photovoltaic module degradation risk early warning is carried out, and risk early warning information is fed back to the terminal in real time; according to the invention, through early warning of power generation of the photovoltaic module, the deterioration prediction of the photovoltaic module is more accurate.

The invention relates to the technical field of energy storage system anomaly detection, and particularly discloses an abnormal state detection method for a liquid-cooled energy storage system, and the method comprises the steps: analyzing the environment where the liquid-cooled energy storage system is located, obtaining the feature value of the environment, analyzing the use state of a cooling system of the liquid-cooled energy storage system, and obtaining the feature value of the environment; judging whether the cooling system is abnormal or not and determining a cooling threshold value of the liquid-cooled energy storage system, analyzing an actual operation state of the liquid-cooled energy storage system, judging whether the liquid-cooled energy storage system is abnormal or not and performing abnormal detection on a battery unit of the liquid-cooled energy storage system, and determining an overheating detection abnormal level of the battery unit; the problem that traditional liquid cooling system anomaly detection depends on a fixed rule or a preset threshold value and lacks intelligent data processing and self-adaptive adjustment capability is solved, the intelligent level of system operation is improved, and the stability and safety of the system are further improved.

The invention, which relates to the technical field of the energy storage equipment, discloses a fire multi-stage early warning system for energy storage equipment, and the system comprises the steps: collecting the operation temperature data of a lithium battery pack, generating an operation temperature value, and starting a fire early warning mechanism if the operation temperature value exceeds an operation temperature threshold value; if the abnormal degree of the fire monitoring data of the potential risk area exceeds the expectation, a first-level alarm instruction is sent out and corresponding feedback data is received, if the feedback data is not consistent with the expectation, a second-level alarm instruction is sent out, the existing fire risk is processed, and after a traversal area is identified according to the fire state data, the traversal area is identified. An emergency escape path is planned in the early warning area, and if the emergency escape path does not exist, a third-level alarm instruction is sent out; and if the secondary alarm instruction is not received, the battery pack temperature adjustment knowledge graph is matched with a corresponding processing strategy. The lithium battery pack is maintained in a targeted manner, the running state of the lithium battery pack is improved, and subsequent potential safety hazards and fire risks are reduced.

The invention belongs to the field of ring main units, and particularly relates to a ring main unit pressure relief device and a ring main unit thereof.The ring main unit pressure relief device comprises a cabinet body and a gas treatment assembly, the gas treatment assembly comprises a first pressure relief pipeline, the first pressure relief pipeline is fixedly installed on the outer wall of the cabinet body, and one end of the first pressure relief pipeline extends into the cabinet body; the bottom of the first pressure relief pipeline fixedly communicates with a second pressure relief pipeline, the bottom of the second pressure relief pipeline fixedly communicates with a sleeve, and a second one-way valve is arranged on the inner wall of the second pressure relief pipeline; according to the ring main unit pressure relief device and the ring main unit thereof, low fluoride in SF6 gas is treated through the gas treatment assembly, the situation that the low fluoride is exhausted to the outside and threatens the health of surrounding constructors is avoided, the SF6 gas exhausted from the gas conveying pipeline circulates along the inclined face of the bottom of the extension plate, the SF6 gas can be better fused with an alkaline solution, and the safety of the ring main unit is improved. And by arranging the spoiler, SF6 gas is wrapped, and the retention time of the SF6 gas in the alkaline solution is prolonged.

The invention discloses a rapid cold start flameless combustion furnace and a control method, and relates to the technical field of combustion equipment.The rapid cold start flameless combustion furnace comprises a combustion furnace body and an inductance heating assembly, a combustion cavity is formed in the combustion furnace body, and the combustion cavity is provided with an air jet nozzle, a fuel nozzle and a tail gas exhaust port; the air jet nozzle and the fuel nozzle are oppositely distributed on the two opposite sides of the combustion cavity and arranged in an opposite jet mode, and the furnace wall of the combustion cavity is a metal component. The inductance heating assembly comprises an inductance coil spirally surrounding the periphery of the combustion furnace body, and the area surrounded by the inductance coil corresponds to the combustion cavity. According to the flameless combustion furnace, the furnace wall of the combustion cavity which is a metal component is heated through the inductance coil, so that the temperature in the combustion cavity is rapidly increased, the temperature of the furnace wall of the combustion cavity is higher than the spontaneous combustion temperature of fuel, the fuel is ignited, and rapid cold start and stable combustion of the flameless combustion furnace are achieved.

The invention provides a front-end flue gas isolation and discharge device for lithium ion battery thermal runaway exhaust, and belongs to the technical field of lithium ion batteries, the front-end flue gas isolation and discharge device for lithium ion battery thermal runaway exhaust comprises a fixed support, a silica gel ring, a thermal insulation layer, a cushioning layer, a flue and a piezoelectric film sensor, the fixed bracket is clamped between the positive pole and the negative pole of the lithium battery and is used for providing stable support for the installation of the device; the flue is arranged at the top of the fixing support and comprises a plurality of branch pipelines, and each branch pipeline is directly connected with the corresponding safety valve; the silica gel ring is filled between a branch pipeline of the flue and the fixed bracket; the device can solve the problem of diffusion of thermal runaway gas in a battery pack, and prevent heat transfer of unburned gas to a normal battery in a thermal runaway exhaust process and combustion heat transfer possibly generated after ignition, so that the spreading of thermal runaway in a module is delayed.

The invention discloses a segmented self-destruction rain enhancement and hail suppression rocket controlled by a time schedule controller, and relates to the technical field of artificial rain enhancement and hail suppression rockets. The device comprises a catalysis bin assembly, an engine assembly and an empennage assembly, and the catalysis bin assembly, the engine assembly and the empennage assembly are connected through reducing sleeve assemblies. An explosion self-destruction device is adopted as a safe landing device, a segmented self-destruction device is arranged in a rocket body engine and a tail segment assembly in advance, a time schedule controller outputs an ignition signal according to binding information, an empennage assembly, an engine assembly and a catalytic bin assembly are exploded into floccules not larger than 100 g and fall onto the ground, self-destruction of all the assemblies is reliable, and the safety of landing is guaranteed. The rocket body wreckage preventing device can effectively reduce damage of rocket body wreckage to personnel, buildings, farmlands, livestock and the like, any one of the ignition loops of the time schedule controller does not affect performance of other loops during working, fire spurting is avoided, space is saved, and the function is reliable.

The invention discloses a monitoring method of a printing and dyeing intelligent manufacturing system based on a bimodal monitoring network, and the method comprises the steps: 1, data collection and preprocessing: a visual monitoring module and an auditory monitoring module work synchronously, and collect image and sound data in a cloth printing and dyeing process in real time; 2, data fusion and analysis: carrying out feature extraction on the image and sound data collected in the step 1, carrying out data fusion and comprehensive analysis, and generating a comprehensive evaluation report of the running state and the product quality of the printing and dyeing equipment; the dual-mode monitoring makes up the deficiency of single-mode monitoring, provides more comprehensive and accurate monitoring information, and improves the precision of fault detection and quality control.

The invention belongs to the technical field of photovoltaic junction boxes, and discloses a solar photovoltaic cable mounting device which comprises a shell and a top cover, and a first rotating shaft is rotatably mounted in the top cover. According to the invention, when a cable is installed, the wiring terminal part of the cable is clamped in the installation groove and the fixing clamp, the handle is rotated, and the wiring terminal in the sliding block is finally clamped in the elastic sleeve, so that hot-line operation of a worker during wiring is prevented; secondly, along with rotation of the handle, the top end of a pressing block on a third rotating shaft abuts against the top surface of a fastening clamp, virtual connection and missing connection caused by separation of the pressing block from the elastic clamping piece and the wire clamp seat are prevented, and meanwhile, electrified connection of the photovoltaic panel is avoided; and finally, when the temperature of the cable and other components in the shell rises, the fire-fighting liquid in the fire-fighting box is sprayed out, and meanwhile, the fire-fighting liquid is heated and gasified to extrude out air in the shell, so that fire is avoided, heat of the cable and other components is taken away while the air is extruded out, and the cable and other components are cooled.

The invention discloses a prevention and control method for early intervention of thermal runaway of a lithium battery, and aims to solve the problems that in the prior art, an alarm can be given only when smoke and temperature are obviously increased, the reaction time is long, and early intervention cannot be realized. The prevention and control method is divided into a first-level keep-alive operation mechanism and a third-level early warning operation mechanism, and comprises the following steps: in a 0-level state, a PACK-level sensor and a master control maintain online heartbeat; the first-level state is that the PACK-level sensor detects data exception in the early stage; in the second-stage state, the PACK-stage sensor preliminarily considers that the battery is possibly in the early stage of thermal runaway, and the PACK detector sends a second-stage fire alarm state to the controller; and in the third-level state, the PACK level sensor determines that the battery PACK is in the thermal runaway state, and the PACK detector sends a third-level fire alarm state to the controller. According to the method, the temperature of the battery PACK is rapidly reduced through early intervention and low-quantity disposal strategies, the battery PACK is prevented from entering a thermal runaway state, and therefore fire disasters are avoided, economic losses are reduced, and the safety of the system is improved.

The invention relates to a pusher capable of recycling percolate, a percolate recycling device and a waste incineration device.The pusher comprises a rack, a material pushing trolley, a driving device, a first percolate channel, a second percolate channel, a third percolate channel and an inclination angle adjusting device.The material pushing trolley is arranged on the rack in a sliding mode, and the driving device is in transmission connection with the material pushing trolley; the material pushing trolley comprises an upper-layer trolley body and a lower-layer trolley body, the first percolate channel penetrates through the rack, the second percolate channel penetrates through the lower-layer trolley body and the rack, the third percolate channel penetrates through the upper-layer trolley body and the rack, the first percolate channel, the second percolate channel and the third percolate channel are sequentially arranged, and the inclination angle adjusting device is used for adjusting the included angle between the rack and the horizontal plane. According to the pusher, leachate recovery can be increased, the water content of garbage entering a furnace is reduced, the garbage can be dried more quickly, the combustion efficiency of a fire grate is improved, the conditions that leachate in a slag hopper of a drying section of the fire grate overflows and the interior of an ash hopper is coked are avoided, and interference to operation and maintenance is reduced.

The utility model discloses a cable terminal cold shrink sleeve, which relates to the technical field of cold shrink sleeves and comprises an outer sleeve and an inner sleeve arranged in the outer sleeve. The connecting and separating mechanism is arranged between the outer sleeve and the inner sleeve and used for connecting and fixing the outer sleeve and the inner sleeve; the isolation filler is arranged in the connecting and separating mechanism; the supporting mechanism is arranged in the inner sleeve and used for supporting the casing pipe; and the number of the cleaning films is two. According to the cable terminal cold shrinkage sleeve, through the use of the isolation filler, the fire hazard phenomenon is avoided when the temperature of the outer sleeve and the inner sleeve is too high in the use process, the safety in the use process is improved, the cable terminal cold shrinkage sleeve can clean the surface of a cable through the use of the cleaning film, foreign matter on the surface of the cable is avoided, and the service life of the cable is prolonged. And foreign matters such as sand, metal chips and adhesive tapes remain on the inner wall of the cold shrink pipe, so that the electrical performance of a cable system is reduced, and even faults are caused.

The invention belongs to the field of power grid safety prediction, and provides an urban underground cable tunnel network fire hazard temperature prediction method and a related device, and the method comprises the steps: collecting the environment data in a cable tunnel and the material data of a cable; establishing a three-dimensional finite element model comprising an electromagnetic field, a thermal field and a fluid field based on the environmental data and the material data, simulating temperature responses of the cable under different conditions, and obtaining sample data of cable core temperature; the method comprises the following steps: training a convolutional neural network (CNN) to extract features based on environment data and material data, processing time sequence data through a long short-term memory (LSTM) network, and constructing a CNN-LSTM hybrid model; and taking the obtained sample data of the cable core temperature as the input of the CNN-LSTM hybrid model to obtain a predicted value of the cable core temperature. The method not only improves the accuracy and real-time performance of prediction, but also enhances the adaptability and robustness of the model to a complex environment, and has wide application prospects and important social values.

The invention relates to the technical field of charging pile monitoring, and discloses a charging pile spontaneous combustion prevention system based on electric spark monitoring, and the system comprises a charging line monitoring module which is used for monitoring the state of a charging line, and obtaining and storing the monitoring data of the charging line; the analysis control module is used for analyzing the charging line monitoring data, judging whether the charging line needs to be replaced or not according to an analysis result, monitoring the state of the charging line through the charging line monitoring module, and obtaining and storing the charging line monitoring data; charging line monitoring data are analyzed through the analysis control module, the actual line loss coefficient and the real-time abnormal index are obtained, whether the charging line needs to be replaced or not is judged according to the actual line loss coefficient and the real-time abnormal index, and a worker can directly overhaul or replace the charging line according to a result; manual judgment after detection of the charging wire is not needed, so that the processing time is shortened, and the charging pile can be recovered to be used as soon as possible; fire disasters caused by electric sparks due to damage of the charging wire are prevented.

The present invention provides a waste lithium battery discharge device and a discharge method based on fluidized particles. The discharge device is configured to discharge the waste lithium batteries (10) by making conductive particles (9) and waste lithium batteries (10) contact and collide with each other, and comprises: a fluidized bed discharge chamber (1); an air distribution plate (2); a waste lithium battery inlet (6) for supplying waste lithium batteries (10); a conductive particle inlet (7) for supplying conductive particles (9); conductive particles (9) enter the fluidized bed discharge chamber (1) through the conductive particle inlet (7) and are distributed in the fluidized bed discharge chamber (1); and a discharge port (8) for discharging conductive particles (9) and waste lithium batteries (10) from the fluidized bed discharge chamber (1). The waste lithium battery discharge device and the discharge method of the present invention can discharge waste lithium batteries in batches, solve the problem of battery heating during the discharge process, and reduce environmental pollution.

The invention discloses a comprehensive cable monitoring device based on multiple sensors, and relates to the technical field of cable detection, the comprehensive cable monitoring device comprises a robot body, a rectangular box is arranged on the top surface of the robot body, an electric telescopic rod is arranged in the rectangular box, a mounting plate is arranged at the movable end of the electric telescopic rod, and a detection piece is arranged at the front end of the top surface of the mounting plate; a baffle is fixedly connected to one side face of the movable plate. A rectangular groove is formed in the top surface of the movable plate, a movable rod is slidably arranged in the rectangular groove, and a strip-shaped broom is arranged at the top of the movable rod; an electric push rod is arranged on the top surface of the mounting plate; a driving mechanism is arranged at the movable end of the electric push rod; through the use of the driving mechanism, the strip-shaped brooms reciprocate on the surface of the cable, dust on the surface of the cable is cleaned, it is avoided that heat dissipation of the cable is affected by dust covering of the cable, and safe operation of the cable is facilitated; meanwhile, the surface of the cable is prevented from being shielded by dust, so that the corrosion condition of the surface of the cable can be clearly observed.

The present invention relates to an ultra-high temperature heat treatment apparatus, characterized by comprising: a cylindrical heater made of a tungsten material; and a tube made of a material having heat resistance to ultra-high temperatures, the heater being made of a mesh structure.

The invention provides a power distribution network single-phase earth fault processing and fault rapid regional isolation system for solving the problems existing in power distribution network single-phase earth fault regional isolation at present. The system is composed of an improved compensation damping type active intervention arc extinguishing device installed on a transformer substation bus, primary and secondary fusion intelligent switches installed at all nodes of a distribution line, and a primary and secondary fusion intelligent switch intelligent control terminal. When a single-phase grounding fault occurs, a grounding switch of the compensation damping type active intervention arc extinguishing device is switched on, a primary and secondary fusion intelligent switch control terminal of each node of a power grid generates corresponding low-resistance, medium-resistance and high-resistance zero-sequence protection fixed values, and when the single-phase grounding fault occurs, zero-sequence current protection is started to realize rapid fault area isolation of the single-phase grounding fault.

The invention discloses a fireproof distribution box based on arc elimination, which comprises a cabinet body with a sealing door hinged to the front surface, a heat dissipation fan is mounted at the top of the cabinet body, and heat dissipation holes and ventilation openings matched with the heat dissipation fan for use are formed in the side surface of the cabinet body; a plurality of arc extinguishing switch assemblies are installed in the cabinet body through a supporting frame, arc extinguishing switches are assembled to be used for eliminating electric arcs generated when a circuit is overloaded, each arc extinguishing switch assembly comprises a shell, two junction poles are arranged in the shell, and contact rods are rotatably installed at the opposite ends of the two junction poles through conductive plates. A contact is arranged at the end of the feeler lever, an arc extinguishing grid piece is installed in the shell, a partition plate is fixed in the cabinet body, a sealing block is installed on the partition plate in a threaded sealing mode, the partition plate divides the bottom of the cabinet body into a material storage cavity, cooling and heat dissipation can be conducted on the interior of the cabinet body through a heat dissipation fan, and the problem that the temperature is too high is avoided; the arc generation probability is reduced.

The invention relates to the technical field of steel machining devices, and particularly discloses steel structure machining welding equipment with a convenient feeding mechanism, the steel structure machining welding equipment comprises two bearing plates, the two bearing plates are arranged in parallel, and a mounting table is fixedly connected to the surfaces of the inner sides of the tops of the bearing plates; and a welding head is fixedly connected to the inner surface of the bottom of the bearing plate. After the defective steel pipe is clamped by the clamping block, the clamping block moves upwards by a certain distance, so that the welding position of the defective steel pipe is close to the welding head, repair welding is completed through the welding head, and in the welding process, an electric push rod on a production line works together to move the whole equipment upwards and move to a designated position; according to the repair welding device for the defective steel pipes, the defective steel pipes are conveyed while being subjected to repair welding, the operation of automatic feeding and welding is achieved, the production efficiency is improved, the defective steel pipes can be processed in a unified mode, and the problem that manual processing is needed after production is completed is solved.

The invention relates to the technical field of chemical engineering, in particular to a methyl methacrylate recovery device and a using method.The methyl methacrylate recovery device comprises a chemical barrel and a barrel cover, the barrel cover is fixedly connected to the top end of the chemical barrel, a methyl methacrylate solution is stored in the chemical barrel, and the methyl methacrylate recovery device further comprises a supporting mechanism, a volume detection mechanism and a display mechanism; the supporting mechanisms are fixedly connected to the outer edge of the bottom of the lower surface of the chemical barrel at equal intervals in the circumferential direction. The volume detection mechanism is fixedly connected to the left end of the upper surface of the barrel cover; the display mechanism is mounted at the front end of the upper surface of the can cover; a base is vertically and fixedly connected to the lower surface of the chemical barrel, and a through hole is formed in the right side wall of the base. The device has a chemical barrel positioning function, collision between chemical barrels is prevented, fire or explosion is prevented, the purpose of accurate polymerization inhibition is achieved, a methyl methacrylate solution is prevented from losing efficacy, the storage date of methyl methacrylate is marked, and the methyl methacrylate solution is prevented from being stored beyond the expiration date.

The invention relates to the field of chargers, in particular to a novel charger plug which comprises a shell, plug pins are symmetrically and fixedly connected to the side portions of the shell, circuit boards are symmetrically and fixedly installed in the shell, first cavities are symmetrically formed in the side walls of the two sides of the shell, and second cavities are symmetrically formed in the top wall and the bottom wall of the shell. And an auxiliary assembly is fixedly installed in each second cavity, first groove bodies are symmetrically formed in the side walls of the two sides of the shell, a communicating cavity is formed between each first cavity and the adjacent second cavity, and a warning assembly is fixedly installed in each first groove body. Through the arrangement of the pop-up assembly, after charging is completed and when a data line is pulled out, the charger plug is automatically popped off from the socket, aging of the charger is slowed down, the service life is prolonged, when the charger plug is short-circuited, the charger plug is automatically popped up at the first time, the situation that the charger plug is still on the socket after short-circuit and causes a fire disaster is avoided, and the safety effect is improved.

The invention provides a high-safety energy storage lithium battery module, and relates to the field of lithium batteries, the high-safety energy storage lithium battery module comprises a box body, a lithium battery pack arranged in the box body and fins arranged on the outer side of the box body, and further comprises a fire extinguishing mechanism arranged in the box body, and the high-safety energy storage lithium battery module aims at solving the technical problems that in the prior art, an existing lithium battery module can generate heat during working, and the fire extinguishing effect is poor. According to the lithium battery pack, the problems that the lithium battery pack is prone to fire due to improper use and the hidden danger is large are solved, and the fire extinguishing mechanism and the cooling mechanism are arranged, so that single or multiple batteries in the lithium battery pack are in a fire or to-be-on-fire state, are isolated and are wrapped by cooling liquid, and fire disasters are prevented; through the arranged switching part, switching between air cooling and water cooling heat dissipation is achieved, and the problem of energy waste in the prior art is solved; by arranging the leakage-proof component, the lithium battery pack is prevented from being on fire, condensate water is prevented from flowing out to influence other electric appliances, and the problem that the lithium battery pack is on fire to influence surrounding electric appliances in the prior art is solved.