40results about How to "Suppress explosion" patented technology

The invention belongs to the technical field of extinguishment explosion suppression of an oil tank truck and discloses a dry powder extinguishment explosion suppression system of the oil tank truck. The system comprises a powder storage box with a spraying hole on an oil tank, a control box, a fire detector, a high pressure gas bomb and a bottle head valve arranged on the high pressure gas bomb, the fire detector is electrically connected with the control box, the control box is electrically connected with the bottle head valve, an outlet of the bottle head valve is connected with a main air tube, the other end of the main air tube is connected with a first branch tube, the other end of the first branch tube stretches into the powder storage box, and the first branch tube stretches into an end socket of the powder storage box to be fixedly connected with a blowing powder mixing tube. The dry powder extinguishment explosion suppression system can effectively restrain detonation or explosion caused by accidents of the oil tank truck, is high in extinguishment speed and simple in equipment operation and has performance of installing a structure which has no influences on the oil tank truck. In addition, a reducing valve sends pressure gas in an oil tank to enable the pressure gas, and a user can safely overhaul the oil tank after certain concentration is achieved.

The invention discloses a gas-liquid-dust explosion experiment system for use under multiple working conditions. The system comprises a container main body as well as a material temperature control unit, an inner-layer container temperature control unit, a precise electric spark ignition energy generation unit, a gas concentration testing unit, a humidity control unit, a pressure sensor unit, a flame temperature sensor unit and an air inlet and vacuuming unit which are respectively arranged on the container main body. The system can be used for simulating a complex working condition in which multiple multi-physical fields including the temperature, pressure, impurities, humidity, leaking hole shapes, ignition positions and the like are coupled, determining accurate critical ignition energyvalues of explosion of gas, liquid and dust and finishing the measurement of relevant parameters and can be further used for evaluating the explosion suppression property of explosion suppression materials and verifying an explosion suppression method.

The invention discloses a gas pumping and releasing pipeline explosion suppression fire retarding device which solves the problems that an existing gas pumping and releasing pipeline has great potential safety dangers. An explosion suppression system comprises a controller, a flame detector and a fire extinguisher. The output end of the flame detector is connected with the input end of the controller. The output end of the controller is connected with the input end of the fire extinguisher. A fire retarding system comprises a shell body and a metal mesh located in the shell body. An explosion venting plate is arranged at the top of the shell body. A gas inlet pipe and a gas outlet pipe are respectively arranged on the left side wall and the right side wall of the shell body. Sealing water drowning the bottom of the gas inlet pipe is arranged at the bottom of the shell body. The shell body on the outer side of the sealing water is provided with a water level sensor and a water level indicator. The water level sensor and the water level indicator are communicated with the sealing water. The gas pumping and releasing pipeline explosion suppression fire retarding device effectively restrict gas explosion of a pumping and releasing pipeline, eradicates occurrence of chain explosion of a pumping and releasing pipe network, is high in fire retarding performance, and has the advantages of being simple in structure, convenient to operate, and low in cost. Moreover, the suppression process is high in speed and effective.

The invention relates to a novel composite gas explosion suppressant which is composed of inorganic filler, a porous mineral material and inorganic phosphorus substances. The components are crushed, uniformly mixed and dried to obtain the gas explosion suppressant. The porous mineral material composite explosion suppressant prepared by the invention has the advantages of fine and uniform texture,low cost, low moisture absorption, high-efficiency explosion suppression, and easiness in industrial production, and can be applied to the field of gas explosion suppression.

The invention discloses a compound explosive suppressant and a preparation method thereof for suppressing explosion of low-concentration coalbed methane, and belongs to the technical field of explosion suppression of the coalbed methane. The preparation method includes the steps that firstly, sodium phosphate hydrogen dibasic decahydrate, potassium phosphate hydrogen trihydrate, bicarbonate magnesium, ammonium bicarbonate and calcium silicate are ground into powder respectively; then talc powder and ground powder ate sieved with 200 mesh, and the sieved powder is collected for standby application; the sieved powder is weighed separately according to a certain proportion and added to a dry powder mixer to mix thoroughly and evenly; and finally, the mixed powder is dried, the drying temperature is raised from the room temperature to 40 DEG C at the heating rate of 15 DEG C/ h, and after constant temperature drying, the mixture is obtained. Through comprehensive suppressing of various powder materials, explosion of the coalbed methane cannot continue, and finally the purpose of suppressing explosion of low-concentration coalbed methane is finally achieved. The compound explosive suppressant has excellent explosion suppression performance.

An improved tank design incorporates a new shock dispersing filler packet insert. This filler packet is formed from a sheet of foil and exhibits in its unformed shape an expanded foil center and an unexpanded denser border. All of the edges of the foil sheet are then folded inwardly and the filler insert is finally rolled and secured to produce a cylindrical packet having a dense core. Once the fuel tank is filled with these packets, the ballistic shock is dissipated by the distributed dense portions within the tank.

The invention relates to an application of multilayer foamed iron-nickel metal materials and aims to provide an application of the multilayer foamed iron-nickel metal materials in isolation and suppression of gas explosion in order to explore the isolation and suppression conditions of the multilayer foamed iron-nickel metal materials in the aspect of the gas explosion. A method comprises steps asfollows: 2-3 layers of the foamed iron-nickel metal materials are arranged at intervals, the distance between every two adjacent foamed iron-nickel metal materials is 5-20 cm, the thickness of each layer of the foamed iron-nickel metal material is 2-3 cm, porosity of the foamed iron-nickel metal material close to the side of a detonating point is 20-30 PPI, and porosity of the other foamed iron-nickel metal materials is 10-30 PPI. The invention applies to the field of gas explosion suppression and isolation.

The invention discloses a device for suppressing gas explosion and an application method for the device, and belongs to devices and methods for suppressing gas explosion of coal mines. The device comprises a sensor assembly, a controller, a compressed air control switch, an ejector, an extinguishing agent container and a U-shaped water tank; and the sensor assembly is connected with an input end of the controller by a data line, an output end of the controller is connected with the compressed air control switch, the compressed air control switch is mounted at a compressed air inlet of the ejector, the ejector is connected with the extinguishing agent container by a pipeline, and the U-shaped water tank is connected onto a water inlet of the extinguishing agent container. The controller is used for receiving signals of a flame sensor, a temperature sensor and a pressure sensor and issues action commands to the compressed air control switch; one end of the extinguishing agent container is connected with a receiving chamber, and the other end of the extinguishing agent container is connected with the U-shaped water tank; foam extinguishing agents are sucked into the receiving chamber of the ejector, and compressed air is mixed with the foam extinguishing agents in a mixing chamber, so that foam is formed; and the extinguishing agents are ejected via a nozzle towards explosion flame and extinguish the explosion flame.

The present application relates to a method and an apparatus for producing graphite oxide, the method comprising: producing a graphite slurry comprising graphite and sulfuric acid; producing graphite oxide slurry by injecting an oxidizing agent into the graphite slurry to oxidize the graphite; mixing a hydrogen peroxide solution into the graphite oxide slurry; and obtaining graphite oxide from the graphite oxide slurry by means of a filtration membrane apparatus.

The invention discloses a cylindrical lithium ion power battery shell and a manufacturing method thereof, and aims to provide the cylindrical lithium ion power battery shell and the manufacturing method which have good safety performance and have the advantage that the waste battery shell does not cause serious environmental pollution after the produced battery is discarded. In the technical scheme, the manufacturing method comprises the steps of (A) pressing a metal plate with a thickness of 1-5 mm into a cylindrical outer-layer shell; (B) cutting the metal plate with the thickness of 0.1-0.5mm into the required size, pressing 2-4 Z-shaped folding parts with a width of 1-5 mm, rolling or welding a seam to prepare the cylindrical inner-layer shell; (C) pressing the metal plate with a thickness of 0.1-0.5 mm into S-shaped connecting parts, wherein one ends of the 2-4 S-shaped connecting parts are bonded to an outer side of the inner-layer shell by using a conductive adhesive; (D) welding the bottom edge of the inner-layer shell to the bottom of the outer-layer shell, wherein the other ends of the S-shaped connecting parts in the step (3) are bonded to an inner side of the outer-layer shell by using the conductive adhesive; and (E) injecting a foam filling layer between the inner-layer shell and the outer-layer shell. The cylindrical lithium ion power battery shell and the manufacturing method thereof belong to the technical field of chemical power supply.

The invention provides a lithium battery energy storage cabin safety monitoring emergency system and a lithium battery energy storage cabin safety monitoring emergency method. The lithium battery energy storage cabin safety monitoring emergency system comprises a detection module, a fire extinguishing anti-reburning explosion suppression module, an exhaust explosion-proof module and a control module, the detection module is installed in the battery energy storage cabin and used for detecting fire and combustible gas in the battery energy storage cabin and sending out a fire signal and a combustible gas signal. The fire extinguishing, anti-reburning and explosion suppression module is used for anti-reburning fire extinguishing and explosion suppression of the battery energy storage cabin; the exhaust explosion-proof module is used for emptying combustible gas in the battery energy storage cabin; the control module is used for receiving the combustible gas signal and the fire generation signal sent by the detection module and judging; the opening or closing of the exhaust explosion-proof module is controlled according to the combustible gas signal; and the fire extinguishing anti-after-combustion explosion suppression module is controlled to be opened or closed according to the fire occurrence signal. According to the method, when different types of lithium batteries are subjected to thermal runaway, the thermal runaway of the batteries can be accurately judged, and the problems of missed judgment and delayed judgment are avoided.

The invention belongs to the field of fire extinguishing agents and particularly provides a metal zirconium fire extinguishing agent which comprises the following components in percentage by mass: 30%-32% of modified quartz sand; 32-35% of modified sodium chloride, 20%-23% of ammonium polyphosphate, 2%-3% of magnesium stearate, 3%-4% of hydrophobic silicon dioxide, 1%-2% of vermiculite powder and1% of mica powder. In the fire extinguishing process, chemical fire extinguishing and physical fire extinguishing can be combined, a reaction chain of metal zirconium combustion is cut off, and the good effects of cooling, after-combustion resistance and dust explosion inhibition are achieved. The invention further provides a preparation and use method of the zirconium metal fire extinguishing agent. The preparation method is simple, low in cost, easy to store and convenient to use.

The invention discloses an explosion-proof tank for a fire-fighting robot. The explosion-proof tank comprises a fixed mounting base, an explosion-proof tank, a liquid storage box and a temperature sensor; the fixed mounting base is fixedly connected with a robot; a socket is arranged on the surface of the fixed mounting base; the socket is electrically connected with an action instruction end of the robot; a mounting slot is formed on the fixed mounting base; the explosion-proof tank is arranged on the fixed mounting base through the mounting slot; an insulating explosion-proof layer is pavedon an inner wall of the explosion-proof tank; the explosion-proof tank comprises an upper tank body, a lower tank body, a controller, a wire, a liquid inlet and a liquid outlet; the upper tank body and the lower tank body can be opened and are respectively connected with the controller; the controller is connected with the socket through the wire; the liquid inlet is formed on the top of the uppertank body; the liquid outlet is formed on the bottom of the lower tank body; the liquid storage box is located in the robot and is connected with the liquid inlet and the liquid outlet of the explosion-proof tank; the temperature sensor is arranged in the explosion-proof tank; a display screen of the temperature sensor is arranged on a side wall of the fixed mounting base. The explosion-proof tank is applied to the fire-fighting robot which is used for carrying explosives from fire scenes and guaranteeing personal safety of firefighters.

The invention provides a system for preventing burning explosion of a dust bin, and belongs to the technical field of petrochemical safety. The system for preventing burning explosion of the dust bincomprises a concentration monitoring device, a spark monitoring device, a gas blowing device and a control device; the concentration monitoring device is used for monitoring combustible gas concentration and combustible dust concentration in the dust bin; the spark monitoring device is used for monitoring the intensity of infrared radiation emitted by sparks in the bin; the gas blowing device is used for blowing gas in the bin; and when it is determined that a monitoring value is higher than a certain set threshold value, the control device is used for giving an alarm according to the monitored combustible gas concentration, the combustible dust concentration and the intensity of the infrared radiation emitted by the sparks and controlling the gas blowing device to conduct blowing. According to the technical scheme, and dust explosion can be effectively restrained.

The invention discloses a flame-suppression explosion relief valve, which comprises a valve body, a valve cover and a valve seat, wherein the valve body is provided with a cavity, the valve cover is arranged at the top of the valve body, and the valve seat is arranged at the lower part of the valve body cavity; the valve body cavity is further provided with a powder storage bag, a rupture disk, a pressure rod, a spring seat and a spring; the powder storage bag is arranged at the top of the valve body cavity, is folded in a zigzag shape, and stores a powder explosion suppressor; the rupture disk is disposed between the powder storage bag and the valve seat, the pressure rod is vertically disposed at the top of the valve seat and located below the rupture disk, and the spring seat is disposed above the valve seat and connected with the pressure rod; the pressure rod is sheathed in the spring, which is located between the spring seat and the valve seat, and the valve body between the spring seat and the valve seat is provided with vent holes. The powder storage bag containing the explosion suppressor is arranged in the valve body, so that the flame-suppression explosion relief valve has the functions of automatic exhausting, explosion suppression and explosion flame elimination, has good explosion-proof safety performance, and can stably operate for a long time.