70results about How to "Reduce fire accidents" patented technology

The invention relates to a composite steel plate and a manufacturing method for same. The composite steel plate comprises a Q245R base plate and an NAR-305B composite plate. The manufacturing method includes the successive steps: I, assembling the base plate and the composite plate in a matched manner; II, grinding a joint surface of the surface base plate so that surface roughness is no more than Ra 25 micrometers; III, laying explosion welding explosives on the composite plate, igniting the explosives, and welding the base plate together with the composite plate by means of explosion; IV, welding unwelded points by means of surface repair welding; V, performing heat treatment at the temperature of 900-920 DEG C and preserving heat for 15-20 minutes; VI, cutting the composite steel plate into the size of a finished composite steel plate; VII, testing mechanical properties of the composite steel plate according to GB / T6396-2008; VIII, performing 100% ultrasonic flaw detection for the composite steel plate according to NB / T47002-2009; and IX, grinding the surface of the composite steel plate so that surface roughness is no more than Ra 2 micrometers. The composite steel plate manufactured by the manufacturing method for the composite steel plate is corrosion-resistant and long in service life.

The invention discloses a flame-retardant waterproof material which can be used in an exterior wall outer insulation system. The material comprises two components which are respectively a liquid material and a powder material. The liquid material comprises the components of: silicone acrylic emulsion, a preservative, a dispersing agent, a defoaming agent, a wetting agent, and water. The powder material comprises the components of: common Portland cement, high-aluminum cement, quartz sand, cellulose ether, a water-reducing agent, and a flame retardant. The material is used in an exterior wall outer insulation system, and solves problems of high flammability and fire-prone property of an organic insulation plate of a current exterior wall outer insulation system during construction and after application. Also, the product has good flexibility and water resistance, such that a problem of reduced insulation effect after the exterior wall cracks and water is let in is solved.

The invention discloses an artificial intelligence technology based fire alarm system. The system includes a remote monitoring center used for data monitoring and display and a fire disaster monitoring terminal used for fire disaster data collection and management. The remote monitoring center is in wireless connection with the fire disaster monitoring terminal. The remote monitoring center includes a display module used for data display, an emergency handling module used for handling collected fire disaster data and a database module used for storing different kinds of information. The display module is used for displaying the collected data in a form of tables and generating corresponding monitoring value curves and displaying the change condition of a current monitoring curve in real time. The fire disaster monitoring terminal includes a data collection module used for collecting data reflecting prominent features of fire disasters. According to the invention, the distinctive dangerous degree of a monitoring environment can be reflected timely and correctly and the monitoring alarm effect is distinct. Fire disasters can be reduced and the system has great significance in improving environment safety.

The invention belongs to the technical field of machinery and profile connection, and particularly relates to a bolt with a clamp spring and an enclosed profile connecting structure adopting the bolt to connect. The bolt includes a bolt body formed by a head part and a screw, and the clamp spring is arranged at the head part in a matched way. The enclosed profile connecting structure is characterized by including a closed profile, a connecting plate and the bolt with the clamp spring; the bolt with the clamp spring includes the bolt body formed by the head part and the screw, the clamp spring is arranged at the head part in matched way; one or more through holes matched with the head part in shape are formed on the closed profile; a screw hole is formed on the connecting plate; the head part is pushed into the through hole of the closed profile and rotated for 45 to 90 DEG to be locked and limited; the bolt penetrates the screw hole of the connecting hole to be locked through the nut; and the other side of the connecting plate is connected with the profile bolt. The bolt with the clamp spring and the enclosed profile connecting structure adopting the bolt to connect are reliable and firm to lock, are convenient to mount and dismount, remarkably improve the construction efficiency, and reduce the safety hazards like fire accidents.

The invention relates to a multi-lightning protection floating roof storage tank, and mainly aims at solving the problem that complete lightning protection cannot be achieved in the prior art. The multi-lightning protection floating roof storage tank comprises a tank body, a floating roof, air-termination strips and a shielding net, wherein the air-termination strips are arranged above the floating roof and are welded with the tank body; intersection points among the air-termination strips are reliably welded; galvanized steel stranded wires or copper stranded wires are adopted by the air-termination strips; the sectional area is not less than 50mm<2>; meshes formed by the air-termination strips are not greater than 10m*10m or 12m*8m; the shielding net is arranged between the air-termination strips and the floating roof; and the distances from the shielding net to the air-termination strips are greater than 10cm; the shielding net is welded with the tank body along the periphery of the tank wall; and the shielding meshes are not greater than 80mm*80mm. According to the technical scheme, the problem is relatively well solved; and the multi-lightning protection floating roof storage tank can be applied to lightning protection of the floating roof storage tank.

This invention relates to a flash over leakage protection device and its protection method. The device is composed of a control circuit board, a fault test component with its output connected with the control circuit board and the input connected with the input of the fault signals of the arc and leakage generated by the load and a tripping device connected with the signal output controlling the act of the CB and a load supply end separately. This invention utilizes a current mutual-inductance device to test the leakage and arc of a device to get signals to be detected and amplified then to be analyzed and processed by a microprocessor to judge if it's necessary to send out the tripping signal to be driven and amplified to force the act of the tripping device to cut off the input of an electric device.

The invention proposes a fire protection monitoring device and monitoring method of an electric meter box. The monitoring device comprises a signal detection device, an analogue-to-digital signal conversion module, a control unit and an execution mechanism, wherein the signal detection device is connected with the analogue-to-digital signal conversion module, the analogue-to-digital signal conversion module and the execution mechanism are connected with the control unit, the signal detection device comprises a temperature sensor, the temperature sensor is arranged a switch of the power meter box, a trip device, a fire extinguishing device and a switch control module are further arranged, hierarchical control is achieved by setting a hierarchical control threshold according to different temperatures, the first protection monitoring device can be switched to a dormant state, an internal circuit in the electric meter box is controlled to be powered off, and fire is extinguished when fireoccurs; and moreover, the temperature sensor is arranged at the switch, abnormal heating can be timely found out, so that a fire trigger point can be timely found out, and a corresponding measure is taken in advance to prevent the fire.

The invention discloses a wood-plastic composite integrated home furnishing plate. The wood-plastic composite integrated home furnishing plate is manufactured from, by weight, 30-35 parts of wood meal, 15-20 parts of diatom products, 3-7 parts of activated carbon powder, 2-6 parts of glass fibers, 5-8 parts of carbon fibers and 25-30 parts of foamex. A manufacturing process of the wood-plastic composite integrated home furnishing plate comprises the following steps of mixing according to the formula, assistant adding and drying, feeding and extruding, extruding sizing, trimming traction, surface film pasting, fixed length transverse cutting, unloading inspection and finished product warehousing. The steps are simple. The diatom products, activated carbon powder, glass fibers, carbon fibers and other components are added to the raw materials, so that the plate has high strength, high formaldehyde adsorption performance, high temperature resisting performance and the like. The plate is environmentally friendly, the wood powder is wide in material source and replaces logs, the production cost is low, and the plate is economical and environmentally friendly. The plate is high in strength and light, construction efficiency is greatly improved, high practical value is achieved, and meanwhile high safety performance is achieved.

The invention relates to an electric fireproof current-limiting type protector which fast completes short circuit current limitation by using a high-power insulated gate MOSFET (Metal-Oxide -Semiconductor Field Effect Transistor) and has a working principle that partial energy of load currents or fault currents is used as the supplying electricity of an internal control circuit through the transformation of a current transformer so that a product can achieve excellent low-voltage characteristics and microsecond-grade fast short circuit current limitation capability under the conditions of no any auxiliary power supply. Aiming at electric fireproofing, the invention can complete the limitation of short circuit fault currents at a microsecond grade so that short circuit currents are only increased to several times of the normal load currents without generating electric arcs near short circuit points, thereby greatly reducing the occurrence probability of fire hazards and reducing the occurrence probability of short circuit electric fire hazards by 30-50 percent; in addition, the invention plays a good prevention role on the short circuit electric fire hazards, thereby reducing the economic loss caused by the fire hazards.

The invention discloses a comprehensive pipe gallery fire early warning method and system. The method comprises the steps that acquring environment monitoring data in the comprehensive pipe gallery; performing data compression on the environment monitoring data to obtain environment monitoring compressed data; classifying and dividing the environmental monitoring compressed data to obtain a plurality of sub-databases; scanning each sub-database by adopting an Apriori algorithm to obtain a frequent item set; wherein each sub-database corresponds to one or more frequent item sets; sherein each frequent item set corresponds to one group of association rules; calculating the confidence of each frequent item set; determining an association rule corresponding to the frequent item set with the confidence greater than a preset confidence as a strong association rule; judging whether early warning information is generated or not according to the strong association rule; if yes, early warning information is generated, and an early warning signal is sent out according to the early warning information. According to the invention, the accuracy of early warning can be improved, and the occurrence of pipe gallery fire accidents is greatly reduced.

The invention relates to a composite steel plate and a manufacturing method for same. The composite steel plate comprises a Q245R base plate and an NAR-305B composite plate. The manufacturing method includes the successive steps: I, assembling the base plate and the composite plate in a matched manner; II, grinding a joint surface of the surface base plate so that surface roughness is no more than Ra 25 micrometers; III, laying explosion welding explosives on the composite plate, igniting the explosives, and welding the base plate together with the composite plate by means of explosion; IV, welding unwelded points by means of surface repair welding; V, performing heat treatment at the temperature of 900-920 DEG C and preserving heat for 15-20 minutes; VI, cutting the composite steel plate into the size of a finished composite steel plate; VII, testing mechanical properties of the composite steel plate according to GB / T6396-2008; VIII, performing 100% ultrasonic flaw detection for the composite steel plate according to NB / T47002-2009; and IX, grinding the surface of the composite steel plate so that surface roughness is no more than Ra 2 micrometers. The composite steel plate manufactured by the manufacturing method for the composite steel plate is corrosion-resistant and long in service life.

The invention provides a method preparing a porous and spherical basic magnesium carbonate crystal by utilizing magnesite and belongs to the field of mineral processing. The preparing method comprises the steps that the magnesite is calcined to obtain active magnesium oxide powder; a Mg(OH)2 suspension is digested and prepared; CO2 is introduced to prepare a precursor solution Mg(HCO3)2; a NaOH solution is added into the precursor solution Mg(HCO3)2 to regulate a pH value, lauryl sodium sulfate is added into the Mg(OH)2 solution, and crystallization, thermal insulation, filtration, washing and drying are performed to obtain the porous and spherical basic magnesium carbonate crystal. The method uses the magnesite as a raw material, the magnesite is calcined to obtain the high-activity magnesium oxide, the lauryl sodium sulfate is used as a crystalline form control agent, and the porous and spherical basic magnesium carbonate crystal is prepared by adopting a hydration method under ordinary pressure. The prepared product has porous and spherical morphology and is high in purity, complete in crystal form and uniform in morphology.

The invention provides a nitrile rubber sealing ring. According to the technical scheme, the nitrile rubber sealing ring comprises a main material and an auxiliary material. The main material comprises nitrile rubber, the auxiliary material comprises silicone rubber, perfluoroether rubber, polyether-ether-ketone, chlorosulfonated polyethylene, a vulcanizing agent, a softener, an adhesive, an accelerant DPTT, a reinforcing agent, a flame retardant and color masterbatch, and the softener is composed of paraffin and asphalt. The vulcanizing agent is made of N '-phenylene bismaleimide. The nitrilerubber sealing ring has the beneficial effects that the silicon rubber, the perfluoroether rubber and the polyether-ether-ketone are added according to a proper proportion, so that the temperature resistance is effectively improved, and the nitrile rubber sealing ring can be used for a long time in a high-temperature environment; in addition, the performance of the sealing ring is comprehensivelyimproved by adding the chlorosulfonated polyethylene and the vulcanizing agent, the flame retardant effect of the sealing ring is greatly improved by adding the flame retardant, and fire accidents are also reduced.

The invention provides a method for low temperature preparation of basic magnesium carbonate crystal with assistance of absolute ethanol, and belongs to the field of mineral processing. The method comprises the following steps: (1) magnesite is calcinated in order to obtain active magnesium oxide; (2) deionized water is added with fully stirring in order to prepare MgO initial slurry, and a Mg(OH)2 fluid suspension is prepared with digestion; (3) at 0-10 DEG C, CO2 gas is introduced, and a precursor solution Mg(HCO3)2 is prepared; (4) a NaOH solution is added, pH value is adjusted, absolute ethanol is added, at 40-65 DEG C, insulation is carried out for 60-120 minutes for pyrolysis of the precursor solution Mg(HCO3)2, and basic magnesium carbonate crystal is obtained. Magnesite is used as a raw material, magnesite is calcinated in order to obtain magnesium oxide of high activity, absolute ethanol is used as an auxiliary agent, and a hydration method is used at a normal pressure for low temperature preparation of the basic magnesium carbonate crystal. The products have high purity, complete crystal form, and uniform morphology.

The invention discloses a preparation method of a functionalized organic magnesium salt, an organic acid is completely dissolved in distilled water to form an organic acid aqueous solution, an inorganic magnesium salt into the organic acid aqueous solution, the organic acid aqueous solution is magnetically stirred at 70-100 DEG C for 1-5 hours, the distilled water is removed, vacuum drying is carried out to obtain a white powdery solid, and the obtained white powdery solid is the functionalized organic magnesium salt. An intrinsic flame-retardant polyester (PET) composite material prepared from the functionalized organic magnesium salt as a flame retardant solves the compatibility between inorganic particles and a matrix, and meanwhile solves the problem of poor flame retardancy of polyester (PET) plastic existing in the existing production process.

The invention discloses an elastic piece type foamed plastic primary sealing device for a floating roof storage tank. The elastic piece type foamed plastic primary sealing device comprises an outer-layer rubber belt. One side of the outer-layer rubber belt and a floating disc edge plate are in contact and fixed and pressed through a fixing plate. An inner-layer rubber belt is arranged inside the outer-layer rubber belt. A sponge is wrapped inside the inner-layer rubber belt. An elastic steel piece providing the elastic force towards the tank wall is arranged on the inner side of the sponge. The tail end of the outer-layer rubber belt, the tail end of the inner-layer rubber belt and the tail end of the elastic steel piece are all fixed to the floating disc edge plate. According to the elastic piece type foamed plastic primary sealing device for the floating roof storage tank, the problem that the elasticity of an existing foamed plastic sealing structure is insufficient is solved; the requirement for larger deformation of the tank wall of the storage tank can be met; and in addition, the oil gas space inside a floating disc edge clearance is eliminated through the primary sealing device, and the occurrence of sealing ring fire accidents can be effectively reduced.

The invention provides a solar public charging system which comprises a vehicle shed, a solar assembly, a grid-connected inverter, a photovoltaic grid-connected box, electric vehicle charging connectors, parking locks and charging devices. The vehicle shed comprises a top shed body, vehicle shed columns and a vehicle shed bracket. The top ends of the vehicle shed columns are provided with the top shed body. The solar assembly is laid on the top shed body. The vehicle shed columns are provided with the horizontal vehicle shed bracket. The vehicle shed bracket is provided with the multiple electric vehicle charging connectors and the two charging devices. The multiple parking locks are mounted on the portions, corresponding to the electric vehicle connectors, of the ground. By adoption of the solar public charging system, electric vehicles can be charged in a concentrated mode, the safety hazard that a resident privately arranges an electric wire in a corridor for charging or puts an electric vehicle in a utility room for charging is eliminated, electric vehicle fire accidents are reduced, and the solar public charging system is safer. Since charging is conducted in a timed mode, and the phenomenon that a charger is overcharged and gives out heat to cause a fire is greatly reduced. In addition, since a charging station adopts photovoltaic charging in the day, charging is more economic compared with charging in a home of the resident.

The invention discloses a fire display panel based on a dynamic two-dimensional code and a fire monitoring method, and belongs to the technical field of equipment inspection, the fire display panel comprises a communication module, a dynamic two-dimensional code module, a storage module, a fire state monitoring module, a sound-light alarm module, a screen display module and a key module; the communication module is used for receiving the data sent by the fire alarm controller and realizing a sign-in positioning function; the dynamic two-dimensional code module is used for encoding the two-dimensional code data; the storage module is used for storing the received data and recovering the data after power failure; the fire state monitoring module is used for monitoring the fire state in realtime; the sound-light alarm module is used for carrying out sound-light alarm when a fire occurs; the screen display module is used for displaying the two-dimensional code and the fire state; and thekey module is used for receiving and processing user input information. In addition to a fire alarm function, the fire display equipment also has patrol sign-in and positioning functions, and the application safety of the fire display equipment is effectively improved.

The invention discloses an outer floating roof storage tank with lightning rods and a metal roof. The outer floating roof storage tank comprises a tank body, a floating roof, the metal roof and the lightning rods, the metal roof is erected outside the floating roof, a supporting column and tank roof angle steel are welded, and the supporting column and the tank body are reliably and electrically connected; the plurality of lightning rods are arranged above the metal roof, lightning rod supporting rods are fixed on a fixing supporting part which is pre-installed and is located on a metal plate,the lightning rods are made of hot-dip galvanized round steel or steel pipes, moreover, the sectional area of each lightning rod is not smaller than 176mm<2>, the length of each lightning rod is 2m,the diameter of each lightning rod is not smaller than 16 mm, the lightning end of each lightning rod is in a hemispherical shape, and the bending radius of each lightning end ranges from 4.8mm to 12.7mm. The protection range of the lightning rods is calculated through a rolling ball method, the number and the positions of the lightning rods are determined, the lightning rods are arranged above the metal roof and are in reliable electrical connection with the metal plate, so that direct lightning protection is achieved on the metal roof, the metal roof of the outer floating roof storage tank is prevented from being directly hit by the thunder and lightning, through the metal roof, the influence exerted by natural factors such as rainwater and sunshine on internal accessories can be reduced, moreover, the damage caused by thunder and lightning induction on the interior of the storage tank can also be effectively avoided, so that multiple lightning protection on the outer floating roof storage tank is realized, and the occurrence frequency of fire accidents caused by lightning on the storage tank is greatly reduced.

The invention relates to a paint room with a paint spraying waste gas treatment system. The paint room comprises a room body for paint spraying, a centrifugal fan and a waste gas treatment system, andthe room body introduces paint waste gas into the waste gas treatment system through the centrifugal fan. The waste gas treatment system comprises a waste gas introduction inlet, a waste gas treatment box and a gas discharge channel. The room body comprises a ceiling capable of being opened or closed. The ceiling comprises two parallel H-shaped steel pieces and several sets of trusses, the H-shaped steel pieces are provided with I-steel guide rails in the same direction as the H-shaped steel pieces, the several sets of trusses are perpendicular to the H-shaped steel pieces and provided with rollers capable of sliding along the I-steel guide rails, ceiling canvas is arranged between the adjacent trusses, two ends of the H-shaped steel pieces are provided with winches for driving the trusses to slide, the winches on the same H-shaped steel piece have opposite rotating directions, and the H-shaped steel pieces are further provided with limiting baffles for preventing the trusses from falling. The paint room is simple and reliable, avoids environmental pollution and bodily injury, and is environmentally friendly and practical.

The invention discloses an outdoor multifunctional application cabinet which comprises a support, an illuminating system, a charging system, a storage system and a fire extinguishing system; the illuminating system comprises an illuminating lamp and a sensor and is located at the top end of the support; the storage system comprises a storage cabinet and a storage lock; the charging system is located below the storage cabinet and comprises a charging hole and a blocking plate; and the fire extinguishing system is located below the charging system and comprises a fire extinguisher and an action mechanism. All the systems are connected and controlled by an electric control mechanism, the electric control mechanism controls the illuminating lamp through the sensor and is connected with a charging hole and an action switch at the same time; switching of the illuminating lamp, simultaneousopening and closing of the charging system and fire fighting are controlled according to data collected by the sensor, and lighting, power on-off and fire fighting actions are controlled to be completed. The outdoor multifunctional application cabinet has the functions of illumination, storage, charging, rest and fire fighting at the same time, is simple in structure and small in occupied area, and meets the safety requirement when electric power is used at the same time.

The invention discloses a transformer substation wireless temperature measurement and early warning system based on CT power taking. The system comprises a wireless power taking module, an informationacquisition module, a control module and a client module. The wireless power taking module comprises a CT ring, and the CT ring sleeves a transformer high-voltage cable and is electrically connectedwith the information acquisition module; the information acquisition module comprises connected temperature sensors; the information acquisition module transmits temperature information acquired by the temperature sensor to the control module; and the control module is in wireless communication with the client module. According to the invention, the disorder of wiring and power taking is avoided through the wireless power taking module, the danger of manually replacing a battery and detecting a power supply in a strong electromagnetic environment is eliminated, and meanwhile, continuous and stable electric energy is provided for a monitoring system; temperature information of transformer equipment can be accurately mastered through the temperature sensors arranged at fixed points, abnormaltemperature positioning is achieved, faults are monitored in real time, and the reliability and safety of temperature monitoring in the transformer substation are greatly improved.

The invention discloses a monitoring device for unmanned substation terminal box, and the monitoring device for unmanned substation terminal box comprises a box body, provided with a temperature controlling device at the rear side plate, the special point is that each side plate in the box body is embedded with an insulation board and a phase-change material plate, the phase-change material plate is naked in the box body and arranged around the main part arranged in the box body, an automatic fire extinguisher and a smoke transducer are arranged in the box body at the upper part, the smoke transducer is connected with a controller in the temperature controlling device, the output end of the controller is connected to the automatic fire extinguisher. The overlarge temperature fluctuation in the box body caused by the rapid change of the outside air temperature can be reduced for maintaining suitable temperature running range for the box body, reducing the opening times and running time of the temperature controlling device and prolonging the service life of the temperature controlling device; the condensation or damp phenomenon caused by season alternant, larger temperature difference between day and night can be avoided, the device is prevented from corrosion, the devices in the box body can be guaranteed for working safely and stably and the unmanned unattended remote monitoring can be realized.

The invention provides a short-circuit protection circuit, relates to the technical field of electric power, and mainly solves the technical problem of short circuit of an electric appliance circuit in normal operation work. The circuit comprises a circuit voltage, a starting circuit, a state holding circuit, a buffer drive circuit, a double-tube output switch circuit, an overcurrent detection circuit and a state indication circuit which are connected in sequence, wherein the starting circuit is used for starting the short-circuit protection circuit, the state maintaining circuit is used for maintaining a normal on-state or a short-circuit state, and the buffer driving circuit is used for enabling the state maintaining circuit to output a current which is large enough to drive the double-tube output switching circuit; the double-tube output switch circuit is used for releasing the short-circuit voltage of a load, the overcurrent detection circuit is used for detecting whether a short-circuit state exists or not, and the state indication circuit is used for displaying whether a short-circuit state exists or not through on-off of an indication lamp. Therefore, the short-circuit protection circuit has the characteristics of high safety and strong practicability, plays a role in protecting the circuits, and avoids the circuit burnout and fire disasters.

The invention discloses a high-adaptability direct charging power supply for a lithium battery tool. Thehigh-adaptability direct charging power supply comprises a lithium battery tool body; the bottom of the lithium battery tool body is fixedly connected with one end of an elastic connecting assembly, the other end of the elastic connecting assembly is fixedly connected with an outer protection assembly, a driving assembly is connected to the side end face of the outer protection assembly in a clamped mode, the driving assembly is located in the outer protection assembly, an ejection assembly is arranged at the bottom of the inner side of the outer protection assembly, and an electric connection assembly is bonded to the end face of the inner side of the ejection assembly. According to the high-adaptability direct charging power supply for the lithium battery tool provided by the technical schemes of the invention, through mutual cooperation of structures such as an energy recovery assembly, the elastic connecting assembly, the driving assembly, the ejection assembly and the electric connecting assembly, absorption of heat on the surface of an outer protective shell by cooling liquid is effectively improved through circular flowing of the cooling liquid, and the heat energy volatilization amount of a lithium battery pack in unit time is guaranteed, and the stability of the low-temperature air acting on the lithium battery pack is effectively ensured.

The invention provides a composite device for safely using and extending functions of tap water and gas. The composite device comprises water, gas, machines, and electric circuits, wherein a water inlet tube is connected with a water pressure gauge, a bending head, a filter, a storage and a magnet; the filter is connected with a tee joint, an electromagnetic valve, an electromagnetic valve power wire, an electric circuit control box, an infrared induction window and commercial power at the right side; the tee joint 7 is connected with the bending head, a ball valve and the tee joint at the middle part; the tee joint 12 is connected with a ball valve, a water absorbing tube, a flexible tube, a pressurizing pump, a flexible tube, a pressurizing water outlet tube, the ball valve, the tee joint, the bending head and a water outlet tube at the lower part; and the right side of the electromagnetic valve and the tee joint 12 are connected with the tee joint 15, the ball valve, the tee joint, the ball valve, a medium filter barrel, an active carbon barrel, a thin filter barrel, and a drinking water outlet. The gas is characterized in that: a gas inlet tube, the ball valve, the tee joint, the ball valve and a gas outlet tube are connected in series; a liquefied gas inlet tube, the ball valve, a bending head pipeline, a gas pressure gauge, a pressure relief valve, the tee joint, the electromagnetic valve and the gas outlet tube are connected in series; the electromagnetic valve power wire is connected with a timing control box; the data wire of a sensor is connected with the timing control body; and the power data wires are respectively connected with the timing control box and the electric circuit control box.

The invention relates to a protection device for an outdoor power distribution cabinet. The protection device for the outdoor power distribution cabinet comprises a box body, wherein the bottom of the box body is a bottom plate, and the top is a top plate; a side wall is arranged between the top plate and the bottom plate; the box body is sequentially provided with an inner side heat insulation plate, a base layer wall body and an outer layer heat insulation plate from inside to outside; a steel reinforcement framework is arranged in the base layer wall body, and is connected to the inner layer heat insulation plate through inclined inserting wires; connecting inserting elements penetrate through the outer layer heat insulation plate; the first end of each connecting inserting element is sharp; a rear seat is arranged at the end surface of the second end of the connecting inserting element; after the base layer wall body is poured, the first ends of the connecting inserting elements are positioned inside the base layer wall body, and the second ends of the connecting inserting elements are positioned outside the outer layer heat insulation plate; barbs are also formed on the connecting inserting elements, and are positioned inside the base layer wall body; the box body is also provided with a nitrogen gas cylinder; an outlet of the nitrogen gas cylinder is provided with a gas outlet pipe; an electromagnetic valve is arranged on the gas outlet pipe, and is connected to a local controller; and the local controller is also connected with an oxygen concentration sensor.

The present disclosure proposes a fire monitoring device and monitoring method for a power metering box. The monitoring device includes a signal detection device, an analog-to-digital signal conversion module, a control unit, and an actuator. The signal detection device is connected to the analog-to-digital conversion module. The analog-to-digital conversion module and the actuator are respectively connected with the control unit; the signal detection device includes a temperature sensor, and the temperature sensor is arranged at the switch of the power metering box. A tripping device, a fire extinguishing device and a switch control module are also set up. By setting the graded control threshold, graded control is realized according to different temperatures, which can switch the fire monitoring device to a dormant state, control the power metering box's internal circuit power-off and When a fire occurs, the fire is extinguished, and the temperature sensor is set at the switch, so that abnormal heating can be detected in time, so that the trigger point of the fire can be found in time, and corresponding measures can be taken in advance to prevent fire.