107results about How to "Avoid ignition" patented technology

The invention discloses an explosive environment airtight medium-voltage power transmission cable, and relates to the technical field of power cables, the explosive environment airtight medium-voltage power transmission cable comprises a central conductor, the outer side of the central conductor is tightly coated with an internal conductor insulator, and the outer side of the internal conductor insulator is tightly coated with an insulated conductor shield; the outer sides of the multiple insulated conductor shields are jointly coated with a steel tape armoring, the outer side of the steel tape armoring is tightly coated with a PVC protection sleeve, and the outer side of the PVC protection sleeve is provided with an external telescopic expansion protection mechanism. A fireproof barrier is constructed on the outer side of the cable through the flame-retardant metal thin net, it is ensured that combustible gas outside the cable cannot be ignited even if open fire appears in the cable, the overall fireproof and explosion-proof performance of the cable is further effectively improved, and meanwhile the outer diameter of a fault position is actively increased, so that the service life of the cable is prolonged. A high-voltage breakdown protection layer in the cable is prevented from igniting external combustible gas, and the overall protection performance of the cable is improved.

The invention belongs to the technical field of candle accessories, and particularly relates to a preparation method and application of a degradable candle container. The degradable candle container provided by the invention is prepared from the following raw materials in parts by mass: 60-100 parts of polylactic acid, 5-20 parts of filler, 5-20 parts of an environment-friendly flame retardant, 1-6 parts of a flame-retardant synergist and 0-7 parts of a performance additive, the modification additive comprises one or two of a polylactic acid modification additive and a filler modification additive; the polylactic acid modification auxiliary agent comprises one or two of maleic anhydride and dicumyl peroxide; the filler modification additive comprises one or more of a silane coupling agent and an alkali metal hydroxide solution; the filler comprises one or more of hemp, fiber and agricultural waste. The degradable candle container obtained by the invention not only has good flame retardant property, but also has excellent biodegradability and good processability and mechanical property, and can ensure the safety of candle combustion.

The invention discloses a lithium battery safety energy storage electric cabinet and an operation management method thereof. The lithium battery safety energy storage electric cabinet comprises a cabinet body, an energy storage system, a heat dissipation fire extinguishing system and a control system, the cabinet body is fixed on the base, and the energy storage management system, the heat dissipation fire extinguishing system and the control system are all arranged in the cabinet body; the energy storage management system comprises a battery module, a battery management system and an energy storage system operation management device; each battery unit is managed and maintained through the battery management system, and the state of the battery is monitored; energy conversion, bidirectional flow and voltage level conversion between an energy storage battery and a power grid are realized through operation management of the energy storage system, and grid connection and disconnection of an electric cabinet are controlled; the environment state in the cabinet body is monitored through the control system, network disconnection is carried out through the battery management system and the energy storage system when abnormal temperature, fire, smoke or combustible gas in the cabinet body are monitored, and cooling and fire extinguishing are carried out through the heat dissipation fire extinguishing system.

An internal combustion engine supplying gaseous fuel, in particular hydrogen, comprises, for each cylinder (1), a first intake duct (3A) and a second intake duct (3B) controlled by a first intake valve (VA) and a second intake valve (VB), respectively. In each operating cycle of the cylinder, first only the opening and closing movement of the first intake valve (VA) is activated while the second intake valve (VB) remains closed, and successively only the opening and closing movement of the second intake valve (VB) is activated while the first intake valve (VA) remains closed. According to the present invention, due to the cooling obtained during the opening of the first intake valve, gaseous fuel is directly supplied into the cylinder only from the moment after the first intake valve (VA) is closed and before the second intake valve (VB) is opened, thereby enabling regular combustion without a pre-ignition phenomenon or a tempering phenomenon.

The safe storage cabin comprises a main monitoring system, a heat dissipation fire fighting system and a cabin body, a plurality of energy storage electric cabinets are stored in the cabin body, and a main energy storage converter, a main transformer and an electric cabinet management system which are connected with the energy storage electric cabinets are fixedly arranged in the cabin body; the cabin body is provided with a cabin door, the cabin door is provided with a display panel and a cabin body management server, and the cabin body management server is electrically connected with a valve of the fire sprinkler, the main monitoring system, the main energy storage converter, the main transformer, the electric cabinet management system, a control mechanism of a roller shutter type fireproof blanket in the heat dissipation fire extinguishing system and the display panel; the main monitoring system transmits detected signals to the cabin management server, the cabin management server controls the operation states of the roller shutter type fireproof blanket, the fire sprinkler, the main energy storage converter, the main transformer and the electric cabinet management system according to the received signals, operation data are displayed through the display panel, large-scale management of the energy storage electric cabinet is achieved, and the energy storage electric cabinet management efficiency is improved. The energy storage cost is reduced, and the space utilization rate is improved.

A lightning protection structure of an outdoor tower type meteorological monitoring station relates to the field of meteorological monitoring equipment and is used for improving the safety and stability of a down lead and prolonging the service life of the down lead. The outdoor tower type meteorological monitoring station lightning protection structure comprises a tower type support, a meteorological monitoring element, a lightning arrester, a downlead, a grounding device, a quartz sleeve and a shielding net. A vertical cavity is formed in the middle of the tower-shaped support and penetrates through the tower-shaped support. A plurality of meteorological monitoring elements are arranged, and the meteorological monitoring elements are distributed on the tower-shaped support. The lightning arrester is fixedly arranged on the top of the tower-shaped support and located on the upper side of the vertical cavity. The down lead is electrically connected with the lightning arrester, the down lead is vertically arranged on the tower-shaped support, and the two ends of the down lead penetrate through the vertical cavity; the grounding device is fixedly arranged underground, and the lightning arrester is electrically connected with the grounding device; the quartz sleeve is arranged in the vertical cavity and sleeves the outer side of the down lead; and the shielding net is made of a high-permeability material and is arranged outside the quartz sleeve.

The present invention relates to a battery pack comprising: a plurality of battery modules, each battery module comprising a plurality of battery cells; a pack case provided to accommodate the plurality of battery modules; an exhaust device provided in the pack case and configured to exhaust gas generated in the battery modules to the outside of the pack case; and an inflator configured to discharge the carbon dioxide stored therein toward the exhaust device.

The utility model provides a new energy automobile is with fire safety house, including the fire safety house for setting in parking stall, its characteristics are: the fire safety house one end's vehicle import and export place sets the gate that can open and close, the top of fire safety house body sets the water tank, and the water tank has the water inlet. The sidewall interval of fire safety house body is the sink, or sets up the separate sink in the inside or the outside of fire safety house body sidewall, and the water outlet of water tank connects the top of sink, and the bottom of sink is linked with the water flow export that sets up in the sidewall bottom of fire safety house, and sets up the drain that can open and close on the bottom surface of fire safety house. The upper portion or the bottom surface in the fire safety house body sets up the flame detector or / and temperature sensor, and the fire safety house body configuration controller, and the flame detector or / and temperature sensor are connected with controller. Can discover new energy automobile fire in time, and rapidly give new energy automobile cooling, and isolate with surrounding environment, prevent fire spreading, reduce property loss.

The invention relates to a distributed photovoltaic system suitable for a steel structure factory building flexible roof, and belongs to the technical field of building flexible roof photovoltaic devices. Comprising a fixing plate, a plurality of photovoltaic pressing plates, a plurality of n-shaped connecting pieces, a plurality of n-shaped purlines, a plurality of fixing seats, a plurality of photovoltaic clamps, a plurality of photovoltaic guide rails and a plurality of photovoltaic panels, wherein the n-shaped connecting pieces, the n-shaped purlines and the fixing seats are sequentially and detachably connected from bottom to top; and the photovoltaic pressing plates are pressed on the edges of every two adjacent photovoltaic panels and are fixed on the photovoltaic guide rails. The structural layout of a photovoltaic power station installed on a traditional flexible roof is improved, the fixing plate, the photovoltaic pressing plate, the n-shaped connecting piece, the n-shaped purline, the fixing base, the photovoltaic clamp, the photovoltaic guide rail and the photovoltaic panel which are detachably connected are utilized, and the original heat preservation layer and waterproof coiled materials of the flexible roof can be conveniently repaired; and the waterproof performance, fireproof performance and structural stability of the original roof are improved.

The utility model belongs to the field of hydrogen filling machines, and particularly relates to automatic static alarm equipment of a hydrogen filling machine, which comprises a hydrogen filling gun, a connecting pipe is fixedly mounted at the front end of the hydrogen filling gun, a static elimination component is arranged at the top end of the hydrogen filling gun, and a blocking component is arranged in the static elimination component. The electrostatic field on the surface of the hydrogen filling gun is detected through the electrostatic sensor, then static electricity on the surface of the hydrogen filling gun is neutralized through the static eliminator, and the static electricity on the surface of the hydrogen filling gun is prevented from igniting hydrogen which is sprayed out of the connecting pipe and possibly escaped, so that the safety during hydrogen filling is improved; and after the electrostatic sensor detects that static electricity is generated in the electrostatic field, the ball valve is synchronously driven to rotate, the ball valve rotates and blocks the interior of the hydrogen filling gun at the moment, hydrogen in the hydrogen filling gun does not continue to flow at the moment, then the risk that follow-up hydrogen escapes at the joint of the connecting pipe and the inflation device is avoided, and the safety is further improved.

The utility model belongs to the technical field of cables, and particularly relates to a bending-resistant cable, which comprises a cable main body, an inner pipe is arranged in the cable main body, and an auxiliary module is arranged on the outer wall of the cable main body; the inner pipe comprises a support, a filling layer and an inner core, the support is fixedly connected to the interior of the inner pipe, the filling layer is installed on the inner wall of the support, and the inner core is arranged in the filling layer; the auxiliary module comprises a movable unit and an extension unit, the movable unit is mounted on one side of the auxiliary module, and the extension unit is arranged on the inner wall of the auxiliary module; according to the utility model, the cable main body has a bending-resistant capability, has a relatively high protection effect on itself, is conveniently fixed on the outer wall of the cable main body, can be fixed at different positions according to requirements, is simpler and more convenient to mount and dismount, has a protection function on the inner core, can increase the strength of the inner core, has a fireproof function, can block a fire source, and is convenient to use. And the cable is prevented from being ignited.

The utility model discloses a matte veneer which comprises a blank base plate, a plurality of grooves are formed in the blank base plate, a first adhesion layer is arranged on the blank base plate, and primer is smeared on the first adhesion layer. The fireproof matt veneer has the advantages that the fireproof coating is arranged on the surface layer of the matt layer, the fireproof coating is formed by coating water-based expansive fireproof paint on the matt layer, the gloss of the fireproof coating is matt, the using effect of the matt veneer cannot be affected, and when a fire breaks out, the fireproof coating can be prevented from being damaged. The fireproof coating on the surface of the matte layer can rapidly expand to form a compact protection layer when encountering a fire source, the matte veneer is prevented from being ignited, fire spreading can be effectively prevented, and fire expansion can be avoided.

The utility model discloses an electric hot melting sleeve for a heat preservation pipeline connector, which relates to the technical field of electric hot melting sleeves and comprises a sleeve body and a reinforcing layer. Electric hot melting belts are fixed to the left side and the right side of the interior of the sleeve body, hot melting connectors are installed on the outer side faces of the electric hot melting belts, the sleeve body is a polyethylene sleeve, the reinforcing layer is fixed to the outer side face of the sleeve body, the outer side of the reinforcing layer is sleeved with a protective net, a through hole is formed in the reinforcing layer, and the reinforcing layer is nitrile rubber buna. The protective net is a steel spiral wire net; according to the electric hot melting sleeve for the heat preservation pipeline connector, the electric hot melting belt is matched with the sealing gaskets, the sealing performance of the connecting position of the electric hot melting sleeve and the heat preservation pipeline connector can be improved, meanwhile, the heat preservation layer can prevent heat in a conveying medium from being lost, and the heat preservation effect is good. And the anti-corrosion coating can prevent external corrosive substances from corroding the electric hot melting sleeve.

The utility model discloses a novel ashtray which comprises a bottom plate, and a shell is rotationally installed on the bottom plate. The upper end of the shell is of an open structure and covers the shell through a cover plate. A guide part is further arranged at the bottom of the cover plate, a discharging port is further formed in the guide part, and the discharging port is blocked through an arranged plug so as to be sealed. In conclusion, the guiding part on the cover plate is used for guiding the cigarette butts to enter the shell, then the shell is used for containing the cigarette butts, after the cigarette butts enter the shell, the plug is used for blocking the discharging opening, the interior of the shell can be sealed, and on one hand, the cigarette butts are prompted to be extinguished rapidly; secondly, other cigarette butts are prevented from being ignited by the cigarette butts; and 3, smoke generated by the cigarette butts is prevented from flying indoors. Due to the fact that the shell can rotate on the bottom plate, the ashtray can be used as a desktop ornament while serving as an ashtray, and meanwhile the device can be played by lifting the lifting rod. On the basis, the ashtray has a novel structure, and can be used for playing and decorating a table top.

A robotic monitoring, detection and fire extinction control system comprises a pumping station, a fire main and at least two robotized fire extinguishing units connected to the fire main comprising a fire monitor with drives for vertical and horizontal aiming and a head with a drive for adjusting the spray angle of the jet. Mounted at an inlet upstream of the fire monitor is a butterfly valve with a drive, and mounted at the outlet of the fire monitor, upstream of the head, are a pressure sensor and a portable control console that are connected to a switching unit at the inlet and, via a network controller, to a control device at the outlet. Mounted on the fire monitor is a fire detection and video surveillance device that is connected to a signal processing device that is connected to a video monitor device and to a process control system that are connected to a control device that is connected via a receiving and control device to fire alarms. A foam generating unit is connected to the robotized fire extinguishing units by a foam conduit; additional reserve pipes, connected to the robotized fire extinguishing units, are provided for supplying water and compressed air foam; and an additional controllable butterfly valve, mounted on the foam conduit, is provided and has a drive connected to the switching unit. The head is designed to be capable of supplying water and compressed air foam at a controlled concentration and rate.

The invention belongs to the technical field of incinerators, and particularly relates to waste gas incinerator air distribution control equipment which comprises an incineration box body, an isolation component is arranged on the left side of an inner cavity of the incineration box body, and oxygen supply equipment is arranged on the right side of the outer surface of the incineration box body; the incineration box body comprises a heat insulation box shell, an air inlet refitted pipe is arranged on the top of an inner cavity of the heat insulation box shell, and an adaptive sliding groove is formed in the left side of the inner cavity of the heat insulation box shell. According to the device, oxygen supply work can be conducted on waste gas introduced into the heat insulation box shell through oxygen supply equipment, when the waste gas in the heat insulation box shell is subjected to high-temperature incineration work, oxygen in the gas transmission machine can be mixed with combustible gas, and then the gas transmission machine has the risk of being ignited; therefore, corresponding equipment is arranged to conduct isolation protection work on the gas transmission machine, during incineration work, the gas transmission machine is isolated from the heat insulation box shell through the staggered grooving rotating cylinder and grooving air injection cylinder, and the problem that the interior of the heat insulation box is ignited is avoided.

The utility model relates to the technical field of fire extinguishing of energy storage containers, in particular to an automatic water injection fire extinguishing system of an energy storage container, which comprises a controller, an alarm device, the energy storage container, a reservoir embedded in the upper surface of the ground and a water replenishing device arranged on the ground, the energy storage container is arranged in the reservoir, a plurality of water inlet valves are arranged on the energy storage container, and a temperature sensor is arranged in the energy storage container; the reservoir and the water replenishing device are filled with flame-retardant fire water, a drain pipe is arranged on the water replenishing device, and a water outlet of the drain pipe is arranged in the reservoir; the temperature sensor is used for detecting temperature data of the energy storage container and feeding back a temperature detection signal to the controller; and the controller controls the opening and closing of the water inlet valve and the alarm device according to the temperature detection signal. By the adoption of the scheme, when a fire happens to the energy storage container, the energy storage container can be effectively controlled, comburent and explosives are prevented from flying out, and the fire hazard range is reduced.

The filter screen cover for preventing the explosion-proof valve of the battery pack from being on fire is arranged around a pressure relief opening of the explosion-proof valve of the battery pack and is fixedly connected to a battery box body, and an outer-layer single-layer filter screen is fixed on the battery box body to filter high-temperature flue gas and solids generated by thermal runaway; the inner-layer multi-layer filter screen is sleeved in the outer-layer single-layer filter screen to secondarily filter high-temperature flue gas and solids from the outer-layer single-layer filter screen, the outer-layer filter screen is adjacent to the outer-layer single-layer filter screen, and the outer-layer filter screen is provided with outer-layer filter screen holes for filtering the high-temperature flue gas and solids from the outer-layer single-layer filter screen; the middle-layer filter screen is arranged on the side, away from the outer-layer single-layer filter screen, of the outer-layer filter screen at intervals, middle-layer filter screen holes for filtering high-temperature flue gas and solids from the outer-layer filter screen are formed in the middle-layer filter screen, and inner-layer filter screen holes for filtering high-temperature flue gas and solids from the middle-layer filter screen are formed in the inner-layer filter screen; and the inner-layer filter screen holes and the middle-layer filter screen holes are arranged in a staggered manner. The safety of the filter screen cover is improved.

The utility model relates to the technical field of composite cables, in particular to a multi-tube loose sleeve type composite cable, which comprises a protection frame, a conductive wire is arranged on the front side of the protection frame in a penetrating manner, an inner protection sleeve is sleeved on the surface of the conductive wire, and an outer protection sleeve is sleeved on the surface of the protection frame. According to the utility model, the insulating layer can play a role in insulation and can effectively prevent current passing through the conductor wire from leaking out, the flame-retardant layer protects the inner protective sleeve and can effectively prevent the inner protective sleeve from being ignited due to too high temperature, and the compression-resistant layer can play a role in compression resistance and can effectively prevent an object in the outer protective sleeve from being crushed; through the tensile layer, the tensile effect can be achieved, the outer protective sleeve can be effectively prevented from being damaged by pulling, through the anti-puncture layer, the anti-puncture effect can be achieved, the outer protective sleeve can be effectively prevented from being punctured, through the wear-resistant layer, the wear-resistant effect can be achieved, and the surface of the outer protective sleeve can be effectively prevented from being abraded.

The utility model discloses an insulating explosion-proof single-phase electronic electric energy meter, which comprises an electric energy meter main body, an explosion-proof assembly and a fixing assembly, the explosion-proof assembly comprises a protective shell, the protective shell is arranged at the bottom of the front side of the electric energy meter main body, and the bottom of the inner wall of the protective shell is fixedly connected with an elastic bag. A fixing frame is fixedly connected to the front side of the inner wall of the protective shell, dry powder is arranged in the fixing frame, the fixing frame is located at the top of the elastic bag, a plurality of through openings are formed in the top and the rear side of the fixing frame and are evenly distributed, a square opening is formed in the bottom of the fixing frame, and the square opening is communicated with the elastic bag. A net plate is fixedly connected to the interior of the square opening and located on the top of the elastic bag. According to the utility model, the explosion-proof assembly is used to carry out explosion-proof protection on the electric energy meter, the sealing performance of a circuit and a connecting part of the electric energy meter is good, electric sparks generated when short circuit occurs do not pass through the housing to avoid explosion caused by the electric sparks, and the safety is high.

The utility model discloses a curtain cloth flame retardance detection device, and relates to the technical field of curtain cloth flame retardance. The curtain cloth flame retardance detection device comprises a mounting frame, a placement mechanism and a protection mechanism, and a mounting box is fixedly mounted at the top of the mounting frame; the placing mechanism is arranged on the inner side of the mounting box and comprises a threaded rod, a guide rod and a moving block, the threaded rod is rotationally mounted on the inner side of the mounting box, the guide rod is fixedly mounted on the inner side of the mounting box, the moving block is arranged on the inner side of the mounting box, and a threaded hole and a sleeve hole are formed in the outer side of the moving block. According to the curtain cloth flame retardance detection device, curtain cloth can be placed on one set of clamping plates, the other set of clamping plates clamp and fix the curtain cloth under the elastic force effect of springs, the curtain cloth is prevented from deviating or falling off in the detection process, the accuracy of the detection result is improved, and the curtain cloth flame retardance can be detected by controlling starting of an exhaust fan. Surrounding objects are prevented from being ignited, and potential safety hazards are reduced.

The utility model discloses a battery pack. The battery pack comprises a shell, a battery module, a first tray, a second tray and a bracket, the plurality of battery modules are arranged in the shell and comprise a first battery module and a second battery module, and the first battery module is positioned above the second battery module; the first tray is located between the first battery cells and the second battery cells, the second tray is located below the second battery cells, the first tray is provided with a plurality of first exhaust holes opposite to the first battery cells, and the second tray is provided with a plurality of second exhaust holes opposite to the second battery cells; the support is arranged above the second battery module and located between the second battery module and the first tray, a second pressure relief channel is defined between the second tray and the inner bottom wall of the shell, and heat insulation layers are arranged on the upper surface of the support and the inner bottom wall of the shell. According to the battery pack provided by the utility model, the battery pack can prevent the first battery cells and / or the second battery cells in the adjacent battery modules from being ignited.

The present invention relates to a vent sealing cap for a secondary battery and a secondary battery including the same, and more particularly, to a vent sealing cap for a secondary battery, which is capable of preventing oxygen from being introduced reversely after a gas generated in the secondary battery is discharged to the outside to prevent the secondary battery from being ignited and improve safety, and a secondary battery including the same. The vent sealing cap for a secondary battery according to the present invention includes a body having a hollow therein, an intake port provided on the body, an exhaust port provided above a position, at which the intake port is disposed, on the body, and an opening / closing member provided in the hollow within the body to open or close connection between the intake port and the exhaust port while moving by a change in pressure of the intake port.

The invention relates to the technical field of quartz boat welding, in particular to a quartz boat welding device for a solar silicon wafer and a welding method, the quartz boat welding device comprises a base, and the top of the base is fixedly connected with a workbench. The quartz boat is fixed between the outer wall of the clamping plate and the top of the workbench through stretching and retracting of the clamping assembly, meanwhile, impurities on the surface of the quartz boat are rubbed in the clamping process, the welding assembly can be driven to stretch through stretching and retracting of the clamping assembly, and the welding position is positioned and adjusted to the top of the quartz boat. The welding height of the quartz boat is adjusted by moving the welding assembly up and down, and meanwhile the protection assembly can be driven to move between the supporting column and the interior of the workbench. The welding assembly moves up and down to drive the clamping assembly to rotate, so that the situation that the clamping assembly shields the surface of the quartz boat in the welding process and influences the welding effect is avoided, the clamping assembly rubs on the surface of the protection assembly, and residual stains on the protection assembly are removed.

The charging manager comprises a charging box, an external power interface is fixedly arranged on the side wall of the charging box, a work indicating lamp is arranged on the side edge of the external power interface, and the external power interface and the work indicating lamp are both electrically connected with a charging control module arranged in the charging box. The two sides of the charging control module are each electrically connected with a sliding rheostat, and the sliding rheostats are electrically connected with the electromagnets through mooring cables arranged below the charging box. According to the charging manager of the unmanned aerial vehicle, the unmanned aerial vehicle can be hoisted to be charged through the indoor top space, and the unmanned aerial vehicle can be charged conveniently. The ground space occupied by the unmanned aerial vehicle is reduced, surrounding objects can be prevented from being ignited when a battery of the unmanned aerial vehicle is deflagrated, the charging safety of the unmanned aerial vehicle is improved, and meanwhile, when the unmanned aerial vehicle is fully charged, warning information can be sent to a remote control end of a user to prompt the user to pull out a plug in time.

The present invention provides a cigarette rejection device for a splicing drum of a cigarette making machine, which comprises an air blowing block, an electromagnetic valve, a controller, and an air supply device, wherein the air blowing block is provided with a first protrusion and a second protrusion opposite to each other; the first protrusion is provided with a first air blowing hole, and the second protrusion is provided with a second air blowing hole; the first air blowing hole and the second air blowing hole are connected to two air suction holes one by one; the air blowing block is provided with a connecting hole connecting the first air blowing hole and the second air blowing hole; one end of the electromagnetic valve is connected to the air supply device, and the other end of the electromagnetic valve is connected to a first pipeline and a second pipeline, and the first pipeline and the second pipeline are connected to the connecting hole respectively; a round block is provided in the second pipeline, and a vent hole coaxial with the second pipeline is provided on the round block; the controller is used to be electrically connected to the V-valve opening and closing control system of the cigarette making machine, and the electromagnetic valve is electrically connected to the controller. The present invention can better reject cigarettes at the splicing drum when the cigarette making machine is started and stopped.

The utility model relates to the technical field of explosion-proof noise monitoring and sensing equipment, and solves the problems that in a working environment of a petroleum gas or natural gas scene, the noise monitoring and sensing equipment ignites petroleum gas or natural gas due to electric sparks generated by keys or short circuit of a battery, and certain potential safety hazards exist. And a structure for explosion-proof protection is lacked. The anti-explosion noise monitoring and sensing equipment comprises a noise monitoring and sensing body, a flame-retardant assembly is arranged on the surface of the noise monitoring and sensing body, the top surface of the flame-retardant assembly is fixedly connected with a sealing assembly, and the flame-retardant assembly comprises a flame-retardant medium layer fixedly connected to the surface of the noise monitoring and sensing body. The surface of the flame-retardant medium layer is fixedly connected with a protective shell, the sealing assembly comprises a rubber operation plate fixedly connected to the surface of the operation opening, a plurality of rubber key films are arranged on the top face of the rubber operation plate, and an observation opening is formed in the top face of the rubber operation plate.

The invention discloses non-combustible paper and a preparation method thereof, and relates to the technical field of non-combustible paper. The novel newsprint paper comprises base paper, a crystal film is embedded in the base paper, the base paper is coated with a curing layer, the curing layer is coated with a hydrophobic coating, and the base paper is newsprint paper. According to the invention, the crystallization film, the curing layer and the hydrophobic coating are formed on the newsprint, the crystallization film absorbs and disperses heat and enhances the flame retardant property of the non-combustible paper, and the curing layer reduces the heat release rate and mass loss of the non-combustible paper and improves the mechanical strength and stability of the non-combustible paper at the same time; the hydrophobic coating enables the non-combustible paper to have the characteristics of water resistance, fog resistance, oxidation resistance, corrosion resistance and the like, so that the non-combustible paper can keep good performance in different environments, the service life of the non-combustible paper is prolonged, the stability of the non-combustible paper is further improved, meanwhile, the non-combustible paper is prevented from being ignited by flames in a fire disaster, and the service life of the non-combustible paper is prolonged. The crystallization film, the curing layer and the hydrophobic coating are made of inorganic materials, so that the prepared non-combustible paper is non-toxic, odorless, green and environment-friendly.

The utility model belongs to the technical field of special equipment for ceramic capacitor manufacturing, specifically relates to a heating system for green porcelain belt preparation. The heating system for green porcelain belt preparation, including heating chamber, silicon rubber heating plate and hot -blast heating mechanism, load film carries ceramic slurry and can enter from the feed port of one end of heating chamber, leave from the discharge port of the other end, silicon rubber heating plate is fixedly arranged in the heating chamber, and the load film is located above the silicon rubber heating plate when running, the hot -blast heating mechanism is used for introducing the outside air, forms hot -blast after heating and makes hot -blast blow into the heating chamber in the way of parallel to the load film running direction and countercurrent to the load film running direction, and the ceramic slurry on the load film is dried. The utility model has the advantages of low cost, small temperature difference in the width direction of film and high safety.

The invention discloses a tunnel inspection robot safety charging switching device which comprises a robot body, a battery is arranged in the robot body, a combustible gas sensor is installed on the top of the robot body, a dual-mode charging interface is installed on the side wall of the robot body, and the dual-mode charging interface is in butt joint with a dual-mode charging plug. A control panel is arranged in the robot main body; the dual-mode charging interface is composed of a wireless charging receiver and a wired charging interface, and the wireless charging receiver and the wired charging interface are electrically connected with a battery in the robot body. According to the tunnel inspection robot, the dual-mode charging plug is arranged to be matched with the dual-mode charging interface, so that the tunnel inspection robot has a wired charging mode and a wireless charging mode, combustible gas in a tunnel is monitored in real time through the combustible gas sensor, and a plugging mechanism and a wireless charging switch are matched; and the robot can be automatically switched to wireless charging when the combustible gas exceeds the standard.