89 results about "Explosion hazard" patented technology

The invention discloses a coal mine coal dust explosion risk dynamic evaluation and explosion suppression system, which comprises a sensing module, a data processing module, a data processing module and a data processing module, wherein the sensing module is used for acquiring direct and indirect parameters of an underground environment; the central processing module is used for operating a risk assessment algorithm and generating a control instruction; the explosion suppression execution modules are distributed in pipelines and roadways of underground key nodes and are used for executing explosion suppression actions; the active chemical detection module is arranged in the main ventilation pipeline and is used for carrying out pre-chemical sampling and analysis on the inflowing air so as to judge the abnormal enrichment trend of the explosive gas; according to the system, a dynamic risk assessment system based on multi-source indirect perception and active chemical detection is constructed, and precise explosion suppression of time-space cooperation is realized. The method has the advantages of being capable of achieving early warning, dynamic evaluation and precise collaborative explosion suppression.

The present invention relates to an explosion-proof management system and, more specifically, provides an explosion-proof management system which collects data such as information on specific locations exposed to explosion risks such as power generation facilities, gas, petrochemical, and marine plants, and the like, and equipment information, and generates a report on the data and notifies of same, thereby preempting safety accidents by means of history management, inspection cycle management, prevention of information omission through updates, etc. and facilitating search for explosion-proof equipment required for purchase.

This application relates to the technical field of gas detection, and particularly to a method for detecting the concentration of specific gases in explosion - hazardous areas. This method uses solid - phase microextraction sampling on - site. The collected samples are detected offline using a surface acoustic wave gas chromatograph, and the gas concentration of the target component in the explosion - hazardous area is calculated and analyzed based on the detection results, ultimately achieving rapid detection of the concentration of specific gases in explosion - hazardous areas. The method for analyzing the concentration of specific gases in explosion - hazardous areas by coupling SPME with GC - SAW proposed in this application does not require pretreatment of the samples collected by SPME and can be directly injected for detection. The sampling and detection methods are safe, and the entire detection time cycle is greatly shortened.

The invention discloses a multi-point explosion hazard effect evaluation test method and a multi-point explosion hazard effect evaluation test system. The method comprises the following steps: uniformly distributing a plurality of explosion sources with prefabricated fragments on the same circumference and synchronously detonating; determining abdominal line distribution based on a shock wave superposition principle, and dividing a reference ring, an inner ring and an outer ring by taking an explosion central point O as a circle center according to a predicted overpressure peak value; and cake-shaped and penholder-type free field pressure sensors, impulse targets, simulation dummies, pine targets and speed measurement targets are systematically arranged on each ring layer along the abdominal line direction. By synchronously collecting multi-parameter data such as shock wave pressure-time history, fragment speed, target deformation, human body reflection overpressure and the like, quantitative analysis of shock wave superposition and attenuation characteristics, fragment power field distribution, human body damage risk and explosion impulse aftereffect is realized. The problem that the multipoint explosion hazard effect lacks a standardized test means is solved, and data support is provided for protection equipment research and development and safety standard formulation.

The invention relates to a construction waste crushing bin dust explosion suppression device which comprises a crushing bin body, a control panel arranged in the center of the front end face of the crushing bin body, an upper cover arranged in the center of the upper end face of the crushing bin body, a feeding hopper arranged in the center of the upper end face of the upper cover, and a pressure relief structure arranged on the upper portion of the center of one side wall of the crushing bin body. An explosion suppression spraying structure is arranged on the lower portion of the center of one side wall of the crushing bin body, an explosion suppression structure is arranged on one side wall of the crushing bin body at the upper end of the explosion suppression spraying structure, and a detection structure is arranged in the center of the interior of the crushing bin body. The explosion suppression device has the beneficial effects that when explosion danger occurs, high-pressure gas and part of dust can be quickly discharged through the pressure relief structure to reduce the pressure in the bin, explosion suppression powder is released through the explosion suppression structure to suppress the combustion reaction after flames are detected, and the explosion suppression spraying structure adsorbs dust, reduces the temperature and inhibits flame spreading by spraying water mist; and the explosion suppression effect and the safety are improved.

The invention discloses a fuel gas rock cracking agent and a preparation method thereof, and belongs to the technical field of gunpowder. In order to solve the technical problems of danger in reprocessing of propellant powder, low utilization rate, environmental pollution and the like, the invention provides a gas rock cracking agent which comprises the following components: 25-75% of main charge, 20-70% of performance regulator and 2-5% of curing agent, the main charge is at least one of single-base propellant powder, double-base propellant powder or three-base propellant powder, the performance regulator is at least one of ammonium nitrate, potassium nitrate, sodium nitrate and ammonium dinitramide, and the curing agent is nitrocotton. The gas rock cracking agent is stable and free of overall explosion hazard, has the characteristics of low vibration, controllable flying rocks, clean products and the like when being used for rock cracking, and can well meet rock cracking operation under sensitive environments and various special working conditions; by adopting a wet mixing process, the fire blast risk caused by friction and static electricity in the mixing process of the propellant powder and the performance regulator can be effectively reduced.

The invention discloses a graded inerting device and method based on dynamic risk discriminating.The device comprises a continuous inerting system, a dust removal system and an efficient inerting system, the dust removal system comprises a dust removal main pipeline and a dust remover which are connected, the continuous inerting system comprises an inerting dust bin and feeding equipment, and the feeding equipment is connected with the dust removal main pipeline; the efficient inerting system comprises an efficient inerting powder tank; and the efficient inerting powder tank is connected with a dust remover. According to the method, the continuous inerting system and the efficient inerting system are used in a combined mode, the explosion risk of the main dust removal pipeline can be reduced through the continuous inerting system under the condition that the dust remover does not break down, and meanwhile the combustible dust explosion risk caused by the fault of the dust remover can be effectively controlled; the efficient inerting system is only triggered under the abnormal condition that the dust concentration of the dust remover is abnormally increased or explosion is generated, so that the energy consumption of fixed threshold inerting and the consumption of an inerting medium are effectively reduced, and more efficient inerting is realized.

The present invention relates to the technical field of stirring devices, and discloses a stirring device capable of automatically adjusting temperature and a method for using the stirring device, comprising a workbench, a stirring drum being installed through the top of the workbench, and a fixing plate being fixedly installed on one side of the stirring drum. The present invention realizes that a circuit board can be installed through a control end shell, and then the module is electrically connected through the circuit board, and then the data of pressure and temperature in the device are received through a data receiving module, and then the temperature and pressure are analyzed by a data analysis module to prevent explosion hazards, and then the operation records are conveniently recorded through a data backup module, and the parameters do not need to be set again when the same material is stirred next time, and then a fixed temperature is set at the beginning of work through a constant temperature module, and then the stirring speed is selected according to the hardness of the material through a speed selection module, so that the stirring environment can be guaranteed, and the stirring speed and the intelligence of the device are improved.

1. Name of the product in this design: Power distribution device (explosion-proof high-voltage assembly for mining). 2. Purpose of this design: A high-voltage power supply and distribution device used in underground coal mines with explosion hazards for controlling, protecting, and measuring high-voltage power supply systems. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A multiply redundant safety system that protects humans and assets while transfer(s) / fuelling of on road / off road, rail, marine, aircraft, spacecraft, rockets, and all other vehicles / vessels utilizing Compressed and or Liquefied Gas Fuels / compound(s). Utilizing Natural Gas Chemical Family of Hydrogen / Propane / ethane / ammonia / and any mixtures along with or with out oxidizer(s), such as Liquefied Oxygen, Oxygen Triplet (O3) / ozone / hydrogen peroxide / peroxide / solid oxidizer(s) one or more processors, utilizing Artificial Intelligence techniques / machine learning in combination with one or more sensors; in combination with one or more micro switches / actuator(s) combine to detect any leaks / fire(s) / or explosion hazards / vehicle motion / arc's, spark(s) / and other hazards for quickly mitigating / locking out / stopping fueling / gas / transfers / vehicle releasing system(s).

The invention relates to the technical field of electrolytic capacitors, and discloses a self-adaptive explosion-proof groove capacitor which comprises an electrolytic capacitor body. The explosion-proof assembly is used for pressure relief and explosion prevention when high temperature is generated in the electrolytic capacitor body, the explosion-proof assembly comprises an explosion-proof groove formed in the outer surface of the bottom end of the shell and memory alloy arranged in the explosion-proof groove in a filling mode, an arc-shaped cavity is formed in the inner top wall of the explosion-proof groove, and an arc-shaped sealing plate is arranged on the inner wall of the arc-shaped cavity in a sliding mode. By arranging the explosion-proof assembly, in the actual use process of the electrolytic capacitor, when the temperature in the electrolytic capacitor rises to a specific temperature, air pressure in the electrolytic capacitor body can be discharged through a first pressure relief hole, a connecting hole and a second pressure relief hole, and the purpose of automatically relieving pressure in the electrolytic capacitor body is achieved; therefore, the explosion risk of the electrolytic capacitor is reduced, and the explosion-proof measure of the electrolytic capacitor can be repeatedly used.

The invention discloses a glue-sealed cable, a cable connector and a use method. Resin is injected into a cavity in a shell of the glue-sealed cable connector; a through hole is formed in the pressing piece, a sealing ring is arranged in the through hole of the pressing piece, and the cable is sleeved with the sealing ring; a baffle is arranged in the shell, the outer side of the baffle is connected with the inner wall of the shell, the baffle is provided with a through hole, and the core wire is sleeved with the baffle. The epoxy resin is injected into the cavity to seal the internal space, so that hazardous gas and dust cannot enter the cavity, the waterproof and airtight performance is achieved, the cable can be generally used in explosive hazardous environments, and in the explosive hazardous environments, if cable damage, cable length insufficiency and cable structure conversion problems occur, the cable can be replaced, and the service life of the cable is prolonged. A large amount of manpower and financial resources are not needed to replace cables or change the process to design the position of mobile equipment, the hidden danger rectification workload of the explosion-proof electric appliance is effectively reduced, the rectification process is simplified, and the rectification capital investment is reduced.

This invention relates to the field of gas composition analysis technology, specifically to a method and terminal for detecting and classifying the composition of explosive hazardous gases. The method includes the following steps: acquiring sensor node tags and sampling data; constructing a composition monitoring sequence; extracting combinations of differential channel tags and time segments; matching a combustible gas composition table with sampling locations; classifying configurational components; mapping channels and time ranges; and obtaining the explosion hazard status identification result. In this invention, a composition distribution chain is constructed by fusing sensor tags and sampling time; the temporal overlap relationship of component combinations is extracted by combining multi-channel data; corresponding segment identifiers are established to complete the identification of the gas's coordinated change structure; a hierarchical association is established through the mapping relationship between tags and a set composition table; structural hierarchy is divided by distinguishing between repeating and non-repeating components; and spatiotemporal continuity mapping is performed by combining distribution trends and channel coverage. This facilitates the location and judgment of the accumulation process of risky components and enhances the response and linkage capabilities to explosion triggers.

The invention relates to a gas power plant explosion dangerous area alarm method and system, and the method comprises the steps: collecting a power grid load fluctuation input signal of a generator set and a corresponding power response output signal, and recognizing an event pair of which the similarity of the power grid load fluctuation input signal accords with a first similarity threshold within a time threshold range; and taking the power response output signal corresponding to the reference event as a reference response of the to-be-analyzed event. And on the basis, calculating a residual signal between an actual power response output signal of the event to be analyzed and the reference response, and identifying a power response unexpected form distortion characteristic caused by low-energy partial discharge in the generator rotor winding from the residual signal. And finally, according to the unexpected form distortion characteristics, early warning is given out for the explosion dangerous area of the gas power plant. According to the invention, the operation safety of the gas power plant is improved, and potential fire and explosion risks are avoided.

The present invention discloses a hydrogen storage tank capable of automatically relieving pressure and alarming, which comprises a storage unit including an inner tank, a hydrogen outlet, an outer tank, a nitrogen outlet, and a support platform; an inflation unit including an inflation port, an intake assembly, and a gas reversing valve; and a pressure relief unit including a pressure relief cover, a ventilation column, a pressure relief member, and a pressure sensor. The beneficial effects of the present invention are as follows: by filling inert nitrogen in the interlayer between the inner and outer tanks, accidents such as spontaneous combustion and gas cloud explosion caused by accidental leakage of high-pressure hydrogen can be effectively prevented. By adjusting the same inflation device, the operations of injecting nitrogen into the interlayer and high-pressure hydrogen injection can be respectively achieved, reducing processes and improving work efficiency. In addition, through a pressure relief device, excessive hydrogen is relieved to the nitrogen interlayer, so that the released hydrogen cannot contact the outside air, eliminating the explosion risk. The hydrogen-nitrogen mixed gas in the interlayer can also be recycled, improving economic benefits and the safety performance of the storage tank.

According to the condensate temporary storage device, the pressure relief mechanism is arranged on the tank body, the air pressure in the tank body is adjusted through the pressure relief mechanism, so that explosion is relieved or prevented, potential safety hazards of a liquid storage tank are reduced, meanwhile, the temperature of condensate is controlled through the heat exchanger, and the temperature of the condensate is controlled through the heat exchanger. The explosion danger caused by the fact that the pressure in the tank body rises too fast due to the fact that the temperature of the condensate is too high and saturated steam explosion of the condensate in the tank body is caused is avoided, and follow-up use or condensate detection is facilitated through temperature control over the condensate.

The invention belongs to the field of burning and explosion prevention, and relates to a pressure relief burning and explosion prevention system based on a flexible oil conservator and a using method of the pressure relief burning and explosion prevention system. In the pressure-relief anti-explosion system, a flexible oil conservator comprises a flexible conservator body and a rigid conservator body structure, one end of a main pressure-relief pipeline is communicated with the rigid conservator body structure, the other end of the main pressure-relief pipeline is communicated with a part of a point where a fire explosion fault easily occurs through a branch pressure-relief pipeline, and a pressure-relief opening device is arranged on the branch pressure-relief pipeline. The pressure relief opening device comprises a rupture disk and a clamping device, the two sides of the rupture disk are clamped through the clamping device, and the two ends of a fastening bolt penetrate through the connecting flanges and are screwed and fixed through fastening nuts. According to the using method of the pressure relief and explosion prevention system, components, which are prone to explosion faults and need to be subjected to pressure relief, of oil-filled electrical equipment are connected, and the components comprise an ascending flanged base, an on-load switch and a pressure relief valve opening. According to the rupture disk, the sealing performance of equipment during normal operation can be guaranteed, the rupture disk is exploded when a fault occurs, the flexible cabinet body structure provides enough pressure relief space, and the burning explosion risk of the equipment is reduced.

This invention relates to the design and technical fields of hydrogen catalytic combustion, thermoelectric power generation, and hydrogen refueling station lighting systems. Specifically, it relates to an intelligent hydrogen refueling station roof, which includes a catalytic combustion zone, a thermoelectric power generation zone, and a nighttime lighting system. Hydrogen undergoes catalytic combustion in the combustion zone, safely converting hydrogen energy into heat energy. The generated heat energy enters the thermoelectric power generation zone to generate electricity. The generated electricity is then supplied to the nighttime lighting system on the roof for nighttime illumination of the hydrogen refueling station. This invention alleviates the problem of excessive electricity consumption for nighttime lighting at hydrogen refueling stations and solves the safety issue of potential explosion hazards from leaked hydrogen, significantly improving the energy efficiency and safety of hydrogen refueling stations.

The invention provides an oil-immersed transformer. When explosion venting accidents happen to the oil-immersed transformer, liquid carbon dioxide in the liquid carbon dioxide container can be sprayed into the oil tank through the liquid pumping pipe and the spraying pipe, a fire source is effectively extinguished, oxygen supply is restrained, and a combustion chain of a fire disaster is blocked; and the liquid carbon dioxide is a good electric insulator, so that the electric shock risk in the fire extinguishing process can be reduced. Meanwhile, a pressure relief device of the oil-immersed transformer can be rapidly opened, pressure in the oil tank is rapidly released, and explosion hazards are reduced. The flue gas treatment device can treat explosion gas discharged by the pressure relief device, harmful substances are converted into harmless substances, and the harmless substances are discharged to a safe area, so that the safety of the surrounding environment and equipment is protected, and the pollution to the environment and the injury to personnel are reduced. That is, according to the oil-immersed transformer disclosed by the invention, the liquid carbon dioxide fire extinguishing design, explosion venting and smoke treatment design are introduced, so that the safety of explosion venting accidents of the oil-immersed transformer and the fire extinguishing effect are improved.

The invention discloses an oil-immersed transformer explosion-proof device which comprises a transformer body and a transfer box, and relates to the technical field of transformers. According to the explosion-proof device for the oil-immersed transformer, the explosion-proof mechanism, the filtering mechanism and the blockage dredging mechanism are arranged between the transfer box and the transformer body, so that when the internal pressure of the device is too high, the pressure in the transformer body can be quickly reduced through cooperation of the explosion-proof mechanism, the filtering mechanism and the blockage dredging mechanism; the transformer oil is synchronously subjected to nitrogen charging, fire and explosion hidden dangers are inhibited, the transformer oil is synchronously filtered, the problems that due to the fact that conductive impurities exist in the oil, the insulating property of the transformer oil is reduced, and partial discharge and heat generation are possibly caused when a local electric field is concentrated are solved, and continuous back flushing is synchronously carried out on the filter element for filtering the oil, so that the service life of the transformer oil is prolonged. And filter holes of the filter element are kept unobstructed.

The present invention relates to the technical field of electrolytic capacitors, and discloses an adaptive explosion-proof groove capacitor, including an electrolytic capacitor body; an explosion-proof component, which is used for relieving pressure and explosion-proof when the temperature inside the electrolytic capacitor body is high. The explosion-proof component includes an explosion-proof groove opened on the outer surface of the bottom end of the outer shell, and a shape memory alloy filled in the explosion-proof groove. An arc-shaped cavity is opened on the inner top wall of the explosion-proof groove, and an arc-shaped sealing plate is slidably arranged on the inner wall of the arc-shaped cavity. By setting the explosion-proof component, during the actual use of the electrolytic capacitor, when the temperature inside the electrolytic capacitor rises to a specific temperature, the air pressure inside the electrolytic capacitor body can be discharged through the first pressure relief hole, the connection hole and the second pressure relief hole, so as to achieve the purpose of automatically relieving pressure inside the electrolytic capacitor body, thereby reducing the explosion risk of the electrolytic capacitor, and the explosion-proof measure of the electrolytic capacitor can be used repeatedly.

The invention relates to a mobile electrostatic protection instrument, which comprises a portable box body with a box cover; the emergency power supply is arranged in the portable box body; the electrostatic sensor is used for detecting electrostatic related parameters; the gas sensor is used for detecting the property and the concentration of combustible gas; the static electricity eliminator is used for releasing static electricity of the target body and is mounted in the portable box body; the grounding alarm is used for grounding qualification detection and alarm of a human body and a target body, and is mounted in the portable box body; and the controller is used for processing, storing and controlling related data. According to the mobile electrostatic protection instrument, through mutual cooperation of the electrostatic sensor, the gas sensor, the electrostatic eliminator, the controller and the grounding alarm, static electricity in an electrostatic hazard area can be effectively detected, eliminated and controlled, and the mobile electrostatic protection instrument can be conveniently applied to oil extraction and gas extraction production activities in the electrostatic hazard area; and real-time detection, monitoring, elimination and management and control of electrostatic hazards in explosion dangerous areas such as sampling of dangerous goods are realized.

The invention relates to a prediction method for simulating a steam cloud explosion consequence. The prediction method comprises the following steps: acquiring an ignition source position and leakage source information of natural gas pipeline leakage; the mass of combustible gas in the steam cloud is calculated through leakage source information, and the combustible boundary of the steam cloud is determined through the isoconcentration lines of the upper limit and the lower limit of explosion, namely the explosion hazard range of the steam cloud is generated; determining a death area, a property loss area and a collapsed building area by taking the position of the ignition source as an original point; calculating the population density in the steam cloud explosion hazard range; and inputting the parameters into a pre-trained emergency accident consequence model to obtain a prediction result of the number of dead people of the simulated steam cloud explosion shock waves. Compared with the prior art, the method has the remarkable advantages that the potential steam cloud explosion accident consequence and the probability of occurrence thereof are evaluated by establishing an emergency accident consequence model and performing comprehensive prediction through a simulation algorithm; and decision support is provided for subsequent development of an effective prevention mechanism and perfect emergency measures.

The application discloses a feed bag conveying equipment with a shaping function and belongs to the technical field of conveying equipment, which comprises an input belt, one end side of the input belt is provided with a shaping bin, one side of the shaping bin is provided with an output belt, one side of the output belt is provided with a mechanical arm, and the application further comprises: a homogenizing mechanism comprising a plurality of oscillation heads arranged in the interior of the shaping bin, a calendering mechanism comprising a plurality of contact plates arranged above the homogenizing mechanism, a side pulling mechanism comprising a plurality of upper clamping plates and lower clamping plates arranged on the two sides in the interior of the shaping bin, and the upper clamping plates and the lower clamping plates are arranged in pairs, the application realizes multi-dimensional collaborative shaping through the bottom matrix excitation of the homogenizing mechanism to break the lumps, the vertical compaction and transverse kneading and air exhaust of the calendering mechanism, and the active expansion and avoidance of the side pulling mechanism, eliminates the bag explosion hazards such as lump piercing, air pressure bursting and side edge cracking, greatly reduces the bag breaking rate, forcibly shapes the feed bag into a standard cuboid, and meets the stacking requirements of the end mechanical arm.

The present invention provides a numerical calculation and hazard assessment method for the leakage and combustion explosion of hydrogen-doped natural gas. The method includes: establishing a three-dimensional geometric model of the gate well space by using FLACS software; based on the hydrogen-doped natural gas leakage and diffusion model, calculating the change curve of the monitoring data of each monitoring point at different positions in the gate well space with time and the concentration distribution cloud map of hydrogen-doped natural gas by using FLACS software; performing numerical calculations of combustion and explosion based on the distribution cloud map to obtain the data of each monitoring point and the distribution cloud maps of jet flame, shock wave overpressure, and thermal radiation intensity; based on the numerical calculation results of combustion and explosion, calculating the probability of the thermal radiation and explosion shock wave generated by the explosion causing harm to the human body, so as to realize the assessment of combustion and explosion hazards. By adopting the probability function method to calculate the probability of different levels of damage to the human body when subjected to different shock wave overpressures and thermal radiations, the present invention can effectively evaluate the combustion and explosion hazards.

The invention provides a treatment system and method for high-sulfur-content and high-oxygen-content VOCs (volatile organic compounds) gas, in the treatment system, a gas explosion risk detection system is arranged on a pipeline between a fan system and an acid-making incineration system, and preset parameters corresponding to an explosion lower limit are set on the gas explosion risk detection system; the gas explosion risk degree detection system is configured to be communicated when the combustible matter concentration parameter in the VOCs gas of the rear-section pipeline of the air distribution system is lower than a preset parameter, and is disconnected and discharges the VOCs gas in the pipeline when the combustible matter concentration parameter is not lower than the preset parameter. According to the treatment system for the high-sulfur-content and high-oxygen-content VOCs gas, the VOCs gas in the VOCs gas collecting system serves as combustion air to be sent to the acid making incineration system, and therefore the problems that an existing negative pressure gas system cannot treat the high-oxygen-content VOCs gas, and a combustion furnace in an existing combustion method process cannot directly discharge the combusted high-sulfur-content VOCs gas are solved.

The invention relates to an explosion-proof barrier gate type personnel electrostatic protection qualification confirmation instrument. The instrument comprises an explosion-proof barrier gate; the explosion-proof radar is mounted on the explosion-proof barrier gate; the explosion-proof personnel electrostatic protection confirmation instrument body is mounted on the explosion-proof barrier gate or beside the explosion-proof barrier gate; the explosion-proof voice alarm is mounted on or beside the explosion-proof personnel electrostatic protection confirmation instrument body; the explosion-proof human body static electricity eliminator is mounted on or beside the explosion-proof personnel static electricity protection confirmation instrument body; and the metal pedal is electrically connected with the detection interface of the explosion-proof personnel electrostatic protection confirmation instrument body. The explosion-proof barrier gate type personnel electrostatic protection qualification confirmation instrument can be applied to petrochemical devices, hazardous chemical storage and transportation, entrances of hazardous chemical production workshops and field operation areas without power sources, so that management, control and monitoring of personnel electrostatic protection measures in oil extraction, gas extraction and explosion dangerous areas in hazardous chemical production, storage and transportation, outdoor temporary operation areas are ensured.