265 results about "Gas explosion" patented technology

The invention provides a blast suppression method and system for an underground cavity of a pumped storage power station. The method comprises the following steps: configuring and deploying a multispectral gas sensor array; carrying out gas explosion limit calculation and risk assessment; calculating the risk level of explosion by using the prediction model; performing graded explosion suppression operation by using a graded explosion suppression execution module; combustible gas is guided to enter an inerting area by utilizing a space flow guide optimization module; and the ignition source blocking module is used for cooperative control to block an ignition source. The technical problems of low mixed gas explosion risk prediction and monitoring precision, low explosion suppression efficiency, slow response speed and relatively high operation and maintenance cost are solved.

The invention discloses a radio frequency electromagnetic energy explosion testing device and method. The device comprises a closed gas cavity, a testing cable, a linear driving mechanism and a processing circuit. The airtight gas cavity is filled with explosive gas. The test cable comprises an inner conductor and an outer conductor, the outer conductor is coaxially arranged around the inner conductor, the inner conductor comprises a first inner conductor and a second inner conductor which are oppositely arranged in the axial direction, the end, away from the second inner conductor, of the first inner conductor is configured to receive radio frequency electromagnetic energy, and the power of the radio frequency electromagnetic energy tends to be increased. And the linear driving mechanism is connected with one end, far away from the first inner conductor, of the second inner conductor, and is configured to drive the second inner conductor to periodically reciprocate along the axial direction, so that the second inner conductor and the first inner conductor are periodically disconnected or connected. And the processing circuit is configured to take the power of the radio frequency electromagnetic energy corresponding to gas explosion as a power safety threshold. According to the invention, data support can be provided for safe operation of the coaxial cable in practical application.

A method for predicting gas explosion. The method includes: obtaining a geometric model with spatial obstacles; determining a simulation dataset of the gas explosion based on the geometric model, where the simulation dataset is a dataset including process data of multiple gas explosion scenes in the geometric model, and a state vector of a spatial grid node in the simulation dataset includes a first moment, coordinate information and a target pressure value; optimizing, using the simulation dataset, a physics-informed GNN to obtain an optimized physics-informed GNN; and predicting the gas explosion in an obstructed gas explosion scenario using the optimized physics-informed GNN. This method is applied to use optimized physics-informed GNN to realize spatiotemporal second-level prediction of overpressure distribution and explosion wave propagations occurring in the obstructed gas explosion scenario, enhance the accuracy, the reliability and the efficiency of gas explosion prediction in the obstructed gas explosion scenario.

The coal mine underground self-adaptive drilling blowout preventer comprises a drill rod, a supporting sleeve, a piston, a plugging sleeve and a hydraulic oil control assembly, the supporting sleeve is rotatably arranged on the drill rod in a sleeving mode, and a sliding groove extending in the axial direction of the drill rod is formed in the first end face of the supporting sleeve; the piston is arranged in the sliding groove in a sliding mode in the axial direction of the drill rod, a hydraulic oil cavity is defined between the piston and the inner wall of the sliding groove, the drill rod is sleeved with the plugging sleeve, and a sealing cavity is defined between the plugging sleeve and the drill rod. In the moving drilling process of the drill rod, the position of the plugging sleeve can be adjusted in a self-adaptive mode, a drilled hole is sealed in real time, and the hole spraying phenomenon is avoided. By means of the method, gas concentration overrun can be avoided, the gas explosion risk is increased, and even gas explosion accidents are caused, and the drilling safety is high. In addition, the dust concentration in the air can be prevented from rising in the drilling process, and the occupational health of operators is effectively guaranteed.

According to the overflow valve with the pressure relief function, a limiting structure is arranged in an overflow pressure adjusting cavity, by limiting the moving distance of an overflow piston, when the pressure at the front end of a pipeline is too large, the pressure relief piston is pushed to move, and then a pressure relief valve is opened; according to the pressure relief valve, the overflow piston is arranged in the pressure relief channel, so that overlarge gas pressure passes through the pressure relief channel, the pressure relief valve port and the cavity between the pressure relief piston and the overflow piston and then is exhausted through the pressure relief exhaust port, the gas pressure at the front end of a pipeline is reduced, that is, overlarge pressure in the corresponding pipeline is reduced, and the problem of gas explosion of the pipeline is avoided.

The invention discloses a nitrogen pressurization system and method of an RBCC engine. The technical problem that an existing nitrogen pressurization system is poor in safety and testability is solved. The pressurization system comprises a nitrogen gas cylinder, a stamping fuel oil storage tank, an oxidizing agent storage tank, a fuel storage tank and a power controller. The nitrogen gas cylinder is connected with the inlet end of the stamping fuel oil storage tank, and a self-locking valve, a first-stage pressure reducing valve and a second-stage pressure reducing valve are sequentially arranged on a connecting pipeline. The power controller is electrically connected with the self-locking valve; the outlet end of the stamping fuel storage tank is connected with the stamping combustion chamber; the outlet ends of the oxidant storage tank and the fuel storage tank are respectively connected with a rocket thrust chamber, and a first gas explosion valve and a second gas explosion valve are respectively mounted on connecting pipelines; a first branch is arranged between the self-locking valve and the first-stage pressure reducing valve and connected with the first gas explosion valve and the second gas explosion valve. A second branch is arranged between the first-stage pressure reducing valve and the second-stage pressure reducing valve and connected with the inlet end of the oxidizing agent storage box and the inlet end of the rocket fuel storage box.

The invention relates to a gas explosion valve sealing detection method and system and a gas explosion valve, and relates to the technical field of gas explosion valves, and the method comprises the steps: obtaining the manufacturing specification of the gas explosion valve; determining a detection air pressure value and a reference outlet air pressure value according to the manufacturing specification, and controlling a preset detection device to blow air to the air inlet according to the detection air pressure value; when the air inlet is blown based on the detection device, the outlet air pressure value of the air outlet is obtained; when the outlet air pressure value is smaller than the reference outlet air pressure value, calculating the difference between the outlet air pressure value and the reference outlet air pressure value as an air pressure deviation value; and according to the air pressure deviation value, an abnormal gas explosion valve is determined through a preset detection method, and the abnormal gas explosion valve is moved to a preset waste area. The method has the effect of improving the yield of the gas explosion valve.

The invention discloses a supersonic orchard gas explosion deep scarification fertilizer applicator which comprises a crawler-type movable chassis, a gas explosion generating device, an air pressure and fertilization adjusting device, a control device, a soil bulk density detection device, a sensor intelligent detection device and the like. The gas explosion generating device comprises an air compressor, a gas tank, a high-pressure gas pipe and an electromagnetic valve, gas generated by the air compressor is stored through the gas tank, and the electromagnetic valve controls release of the high-pressure gas. The air pressure and fertilization adjusting device comprises an electromagnetic valve, a soil bulk density detection device, a sensor intelligent detection device and a control platform, and the soil bulk density detection device is installed on the crawler-type movable chassis and used for detecting the thickness of a soil compaction layer and determining the deep scarification depth and the air explosion pressure; the sensor intelligent detection device comprises a moisture sensor, a temperature sensor, a nitrogen phosphorus and potassium sensor, a single chip microcomputer control module and a communication module, and the sensors are used for detecting the moisture, temperature and nitrogen phosphorus and potassium content of soil, so that the proper fertilization amount is determined.

The invention discloses a building structure explosion multistage early warning and damage assessment integrated analysis method, which relates to the field of building structure safety, and comprises a BIM-FEM model conversion module, an FEM explosion response and damage assessment module, an Internet of Things gas sensor acquisition module, an early warning analysis and grading early warning module and a data storage module. And an efficient automatic model conversion interface between the BIM and the FEM is developed. The interface realizes bidirectional data conversion between the BIM model and the finite element analysis model; a gas explosion load is applied to finite element analysis software, dynamic response and damage of each component under the gas explosion load are studied through numerical simulation, and anti-explosion damage evaluation attributes of each component are formed. The problem of low modeling efficiency of a complex structure in finite element analysis software is effectively solved, and automatic data extraction, model mapping and result write-back between the BIM model and the FEM model are realized.

The invention belongs to the technical field of coal mine safety research, and discloses a fuel-rich gas coal dust explosion residual gas secondary explosion test device which comprises a primary explosion container and a secondary explosion container, the primary explosion container is communicated with the secondary explosion container through a three-phase valve, and the three-phase valve is communicated with a gas sample bag; the pulverized coal spreading system comprises a first spreading machine and a second spreading machine which are fixedly arranged at the bottoms of the primary explosion container and the secondary explosion container in a penetrating manner respectively; the gas supply system comprises a premixing tank which is communicated with the primary explosion container and the secondary explosion container; and the image acquisition system comprises a first camera and a first infrared thermal imager which are arranged corresponding to the first explosion container, and a second camera and a second infrared thermal imager which are arranged corresponding to the secondary explosion container. According to the invention, the research on the flame propagation dynamic characteristic evolution mechanism under the influence of multiple parameters of fuel-rich gas coal dust explosion and residual gas explosion is realized, the experimental error is reduced, and the research cost is reduced.

The invention relates to the technical field of fuel cells, and particularly provides a catalytic reforming hydrogen production fuel cell system for methane separation by a hydrate method. The cell system comprises a methane hydrate reaction module, a methane catalytic reforming module, a fuel cell module and a tail gas collection module. In the coal mining process, due to limitation of technical reasons, most low-concentration coal mine gas can be directly emptied, so that resource waste and environment damage are caused; in recent years, a hydrate technology is widely concerned to be used for separating and storing gas, and the method is relatively safe and can effectively reduce the risk of gas explosion. According to the invention, the low-concentration gas is separated and purified according to the temperature and pressure difference under the condition that different components in the low-concentration gas form hydrates, high-concentration CH4 is used as fuel and enters the fuel cell module, chemical energy is converted into electric energy, and the electric energy is provided for coal mine production and living places; the utilization scene of the low-concentration gas is expanded; and the utilization efficiency of the low-concentration gas is improved.

The invention relates to an RH vacuum tank system and a combustion heating operation method, and belongs to the field of ferrous metallurgy vacuum treatment equipment. The system comprises a vacuum tank, a hot bent pipe, a top lance device, a vacuum air pump system and an automatic control system, the hot bent pipe is connected with the vacuum tank, and an automatic ignition device, an infrared temperature measuring device, a video monitoring device and a thermocouple are integrated in the hot bent pipe; the top lance device is of a water-cooling multi-layer sleeve structure, multiple stations are switched through a top lance rotating frame and a lifting trolley, and vacuum sealing is maintained. The method is based on multi-sensor cooperative control, low-temperature ignition, high-temperature spontaneous combustion and molten steel heating modes are automatically executed according to the temperature of a refractory material at the bottom of a tank and the temperature of molten steel, and combustion stability is ensured by dynamically adjusting the flow of fuel gas and oxygen. According to the scheme, through closed-loop ignition control, inert gas protection and intelligent monitoring, the safety is remarkably improved, and the gas explosion risk is avoided; full-automatic operation and precise temperature control are combined, the molten steel quality and the production efficiency are improved, and the device is suitable for refining production of high-value-added steel such as silicon steel and automobile sheets.

The invention discloses a simulation device and method for simulating goaf coal spontaneous combustion induced gas explosion, and belongs to the technical field of goaf gas explosion simulation. The simulation device comprises an explosion cavity body, a region control system, an explosion simulation system, an environment simulation system, a monitoring system and an intelligent control system; the area control system is used for dividing the space in the explosion cavity to form an explosion area and a non-explosion area at different positions; one end of the explosion simulation system is connected to an explosion area in the explosion cavity through the bottom of the explosion cavity; the environment simulation system is used for injecting gas needed by detonation of the explosion simulation system into the explosion area and injecting gas used for simulating the internal environment of the goaf into the non-explosion area. The monitoring system is used for measuring a gas explosion process in an explosion area and data change conditions of temperature, gas concentration and pressure characteristics of a coal face; according to the invention, the influence of gas explosion at different positions of the goaf in the explosion cavity on the coal face can be simulated.

The invention belongs to the technical field of coal mine drilling, and discloses a while-drilling safety comprehensive early warning system which comprises the following four modules: a hole gas-solid collecting device which is responsible for sealing a drilling hole, collecting gas and drilling cuttings and dynamically adjusting internal and external pressure balance; the orifice monitoring host integrates a data processing unit and receives and analyzes sensor signals in real time; and the comprehensive monitoring host comprises a gas measuring system, a drilling cutting quantity measuring system, a pressure fan and the like. According to the while-drilling safety comprehensive early warning system, the gas emission amount, various gas concentrations (methane, carbon monoxide, carbon dioxide and the like), the drilling cutting amount index and the orifice pressure difference are continuously and synchronously monitored while drilling, natural ignition, coal and gas outburst, gas explosion and other underground risks are comprehensively covered, the micro-differential pressure sensor is adopted for feeding back the pressure difference inside and outside an orifice in real time, and the safety of the orifice is guaranteed. And the gas emission rate is dynamically adjusted in combination with the ejector.

The invention relates to the technical field of underwater noise simulation, and discloses an array system for simulating ship noise based on a gas explosion sound source, which comprises a unit console, a display console, an air compressor unit, a valve control box, a gas cylinder group, a comprehensive controller, a gas explosion sound source array and a ship power station, and is characterized in that the ship power station provides power for the air compressor unit and the comprehensive controller; the unit console is used for controlling the air compressor unit, and the display console is used for performing interface display and operation parameter setting on the comprehensive controller; the air compressor unit receives a control signal of the unit console and generates compressed air flowing to the valve control box; the valve control box receives a control instruction of the comprehensive control instrument and conveys compressed gas to the gas explosion sound source array through the gas cylinder set. The gas explosion sound source array further receives a control signal of the comprehensive control instrument and works according to the control signal. According to the invention, the impact noise of the ship engine can be simulated underwater, and the purpose of simulating the real working process of the ship diesel engine is achieved.

The invention relates to an efficient combustion control method for a coke oven waste gas denitration hot blast stove. The method comprises the steps of ignition, air-fuel ratio measurement, air-fuel ratio maintenance and the like. According to the efficient combustion control method for the coke oven waste gas denitration hot-blast stove, the actual air-fuel ratio of air to fuel gas can be measured before combustion of the hot-blast stove, and the combustion efficiency of the hot-blast stove is improved; the gas content in the pipeline can be monitored, and the gas explosion hidden danger is eliminated; by quantifying the circulating gas flow, large changes of parameters such as system temperature are avoided, and stable operation of the system is achieved; finally, the heated waste gas flow is used as a variable for automatic temperature adjustment, and the efficiency of the denitration system is improved.

The invention relates to a coal face gas concentration dynamic distribution model determination method, and belongs to the technical field of coal mine safety monitoring. The technical problems that traditional single-point static monitoring cannot reflect working face gas dynamic distribution and prediction precision is low are solved. According to the technical scheme, the method comprises the steps of deploying air inlet corner, working face middle and air return corner sensor networks to collect data in real time; a gas distribution function model y = ae (1-x) is built, a is the return air corner concentration value, and b is the dynamic attenuation coefficient; fitting measured data through a least square method to solve parameters; and setting an update period t to dynamically correct the model. The technical effects are that working face gas concentration full-space dynamic mapping is realized, ventilation condition changes are responded in real time, disaster early warning capability is improved in combination with a visual interface, gas explosion risk is obviously reduced, and safe production of a coal mine is guaranteed.

The invention relates to the technical field of underground hydraulic fracturing, and discloses a directional hydraulic fracturing device for underground hydraulic fracturing equipment, which comprises a fracturing pipe body, and the outer edge of the fracturing pipe body is fixedly sleeved with an exhaust funnel. Gas is extruded by fracturing fluid and supplies gas to the interior of a notch through a filter screen and an electromagnetic valve gas inlet pipe, propelling blades are pushed to rotate, nozzles are driven to conduct position adjustment, an angle sensor is used for assisting in detection that the nozzles at the needed angle are in butt joint with the electromagnetic valve liquid inlet pipe, and an electric telescopic rod is used for driving a friction clamping plate to clamp and limit the propelling blades. Gas enters the main clamping cylinder through the electromagnetic valve main clamping pipe, the auxiliary drum membrane deforms to further clamp and seal the self-adaptive plugging device, and the electromagnetic valve main clamping pipe is closed, so that the angle of the nozzle is convenient to adjust, and meanwhile, the sealing stability of the self-adaptive plugging device is further improved; auxiliary gas is exhausted from the electromagnetic valve main exhaust pipe and the center of the fracturing pipe body, and gas explosion caused by extrusion of gas in the device is avoided.

The invention belongs to the technical field of urban public safety, and relates to an experimental device for an explosion venting and quenching method in an explosion gallery of a comprehensive pipe gallery gas cabin, and the explosion venting and quenching method in the explosion gallery of the comprehensive pipe gallery gas cabin is characterized in that an explosion venting interlayer plate is arranged at the top of the comprehensive pipe gallery gas cabin; the comprehensive pipe gallery gas cabin is divided into a comprehensive pipe gallery gas cabin main body and an in-gallery explosion venting interlayer, and a plurality of explosion venting openings distributed in the axial direction of the explosion venting interlayer plate are formed in the explosion venting interlayer plate so as to communicate the comprehensive pipe gallery gas cabin main body with the in-gallery explosion venting interlayer, so that explosion energy generated by gas explosion is guided into the in-gallery explosion venting interlayer from the comprehensive pipe gallery gas cabin main body; the experiment device comprises an experiment cabin used for simulating a comprehensive pipe gallery gas cabin, an explosion venting interlayer plate is arranged at the top of the experiment cabin, and a plurality of explosion venting openings distributed in the axial direction of the explosion venting interlayer plate are formed in the explosion venting interlayer plate so as to communicate an experiment cabin main body with an in-gallery explosion venting interlayer. The comprehensive pipe gallery gas cabin is divided into a comprehensive pipe gallery gas cabin main body and an in-gallery explosion venting interlayer through simulation.

The invention discloses a gas explosion accident assessment method and device and a storage medium, and belongs to the technical field of safety assessment. The method comprises the following steps: obtaining building geometry and field damage conditions involved in a gas explosion accident; estimating an overpressure peak value range at the position of the damaged component in the field damage condition in combination with the anti-explosion capability of a typical component; according to the building geometry and the on-site damage condition, constructing a numerical calculation model by using a computer simulation technology; setting a plurality of monitoring points for the numerical calculation model, simulating a gas explosion accident to obtain gas explosion load distribution of each monitoring point, and comparing and analyzing the gas explosion load distribution to obtain an evaluation result; and outputting the evaluation result in a report form to obtain an evaluation report of the gas explosion accident. According to the method, the consequence of the gas explosion accident is systematically evaluated by combining the anti-explosion capability of the typical component, and the scientificity, the reliability and the usability of the evaluation method are improved.

The embodiment of the invention provides a coal mine gas explosion accident reason analysis method and system, and belongs to the technical field of gas explosion accident prevention. The method comprises the following steps: acquiring report information of historical gas explosion accidents, and performing structured processing on the report information based on a predetermined reason classification framework to obtain structured information; constructing a corresponding accident three-dimensional network model based on the structured information, and determining attribute information of each node in the accident three-dimensional network model; analyzing the occurrence reason of the corresponding gas explosion accident based on the attribute information of each node to obtain the analysis result of each analysis index; and constructing a corresponding explosion accident self-inspection prevention list based on the analysis result of each analysis index, and pushing the explosion accident self-inspection prevention list to a user side. According to the scheme, real-time updating and accurate implementation of accident prevention measures are achieved, and efficient and feasible technical support is provided for coal mine safety management.

The invention belongs to the technical field of residual coal re-mining, and particularly relates to a gas and fire treatment method in the tunneling process of a lower-layer residual coal re-mining roadway, which comprises the following steps of: injecting gel foam into an upper-layer mining stopping line and an upper-layer open-off cut for leaking stoppage and cooling; advanced extraction is conducted on gas accumulated in a gas guide fissure zone of an overlying coal rock stratum of the upper-layer old goaf, meanwhile, carbon dioxide is injected into an air inlet and return roadway area of the upper-layer old goaf through a carbon dioxide injection drill hole in the ground, gas is displaced, and negative pressure air leakage of the upper-layer old goaf is prevented; and judging whether the residual coal in the upper-layer old goaf is spontaneously combusted or not, if the residual coal in the upper-layer old goaf is spontaneously combusted, increasing the carbon dioxide injection amount and the diffusion area, and performing advanced detection on the cavity in the process of tunneling the lower-layer roadway. According to the method, the risk probability of gas overrun, coal spontaneous combustion or gas explosion in the tunneling process of the lower-layer residual coal re-mining roadway is reduced.

This invention relates to the field of research on the operational characteristics of overpressure relief devices, and particularly to an experimental device for measuring the operational characteristics of overpressure relief devices under water hammer conditions. The device includes: a high-pressure air compressor, a frame, a piston accumulator, a quick-opening device, a high-pressure test assembly, and a high-frequency dynamic pressure sensor. This invention enables the measurement of operational characteristics under different pressure rise rate loads caused by water hammer phenomena on a test bench, providing an experimental platform for the research on the operational characteristics of overpressure relief devices under high pressure rise rates. The overall device is simple, quick, and stable. It effectively solves the problem of applying high pressure rise rate loads in current overpressure relief device operational characteristic measurement tests, overcomes the danger of using combustible gas explosions as pressure sources in existing operational characteristic measurement tests, and overcomes the shortcomings of existing test methods, such as long testing times, the need to calculate gas explosion pressure, and the difficulty in accurately controlling the pressure rise rate.

The invention relates to a shear wave seismic source excitation device based on high-pressure gas explosion and an application method of the shear wave seismic source excitation device. The first cover plate and the second cover plate are arranged at the two ends of the accelerating tube and used for sealing the accelerating tube, and an igniter connecting hole and a gas injection hole are formed in the first cover plate; the detonation tube is arranged in an inner cavity of the accelerating tube, and one end of the detonation tube is fixedly connected with the first cover plate; the third cover plate is arranged at the other end of the detonation tube and used for sealing the detonation tube, the area of the third cover plate is smaller than the cross sectional area of the accelerating tube, and the detonation tube has the advantages of being strong in transverse wave signal, environmentally friendly, good in economical efficiency and good in field adaptability. The problems that a transverse wave source is easily limited by the driving capacity and the ground coupling efficiency and the field operation capacity is poor are solved.

The application discloses a non-powered internal circulation integrated sewage treatment device and a sewage treatment method, and mainly relates to the field of sewage treatment. The device comprises a treatment pool (1), the side of the treatment pool (1) is provided with a water outlet groove (2), and the treatment pool (1) comprises a gas explosion area (3), a flow guide area (4) and a sedimentation area (5); an aerator (8) is arranged at the middle position of the gas explosion area (3), and gas stripping is formed in the gas explosion area (3); a water inlet pipe (9) is arranged at the bottom of the pool, the vertical position of the water inlet pipe (9) is located in the flow guide area (4) below the second partition plate (7), the water inlet pipe (9) horizontally inlets water at multiple points at the bottom of the pool, and the water inlet direction is towards the gas explosion area. The device has the beneficial effects that it is an automatic internal circulation integrated sewage treatment device, the biological denitrification and phosphorus removal function is added while the advantages of the aeration sedimentation tank are retained.

This invention discloses a numerical characterization method for gas explosion damage based on in vivo biological damage correction, belonging to the interdisciplinary field of explosion mechanics and biomedicine. The method first acquires multi-dimensional damage data of organisms in gas explosion experiments, constructs a fluid-structure interaction numerical model of the gas explosion flow field in the tunnel and a biomimetic finite element model of the organism, solves the model using an improved arbitrary Lagrange-Euler algorithm, and extracts dynamic biomechanical response parameters. A quantitative correlation between mechanical response and damage level is established through a multi-objective collaborative correction model and an ordered Probit correction model. After iterative optimization, a high-confidence gas explosion-induced biological damage prediction model is output. This invention forms a complete closed loop of simulation-experiment-correction, which can accurately characterize gas explosion biological damage, providing technical support for research on explosion injury mechanisms, assessment of protective effectiveness, and clinical diagnosis and treatment.

The utility model discloses a gate system driven by an electrostatic discharge device, the gate system comprises an electrostatic discharge device, a gate, a control box and a gate driving device, the control box comprises a controller, and the gate driving device is in signal connection with the control box and can drive the gate to move under the driving control of the control box. The electrostatic discharge device is at least in signal connection with the control box and is configured to send a control signal to the controller after an operator discharges human body static electricity through the electrostatic discharge device, so that the gate driving device drives the gate to be opened. In the application, the opening of the gate system is driven by the control signal sent by the electrostatic discharge device, so that the static electricity of the body must be released through the electrostatic discharge device before an operator enters a drug production area with a dust or gas explosion risk, and the safety risk caused by the static electricity is avoided.

The utility model discloses a gas pipeline protection device which comprises a mounting bottom plate, a mounting groove is formed in the top of the mounting bottom plate, a connecting frame is fixedly connected to the rear side of the top of the mounting bottom plate, a lower shell is fixedly connected to the top of the connecting frame, a protection mechanism is arranged at the top of the mounting bottom plate, and a buffering assembly is arranged at the top of the mounting bottom plate. The protection mechanism and the buffering assembly are used in cooperation, gas connection can be protected, and the problems that when gas pipelines are laid, corners are inevitably encountered, the gas pipelines at the corners are usually connected through elbows, and when collision occurs at the elbows, the gas pipelines cannot be connected easily are solved. The problem that the gas pipeline protection effect is reduced due to gas explosion and other accidents caused by leakage at the joint of the elbow and the gas pipeline in the prior art is solved, and the gas pipeline protection device has the advantage of being convenient to protect.

The utility model provides a double-push-rod bidirectional opening high-pressure air cavity device, which relates to the technical field of explosion suppression and comprises an anchor rod, a left shock wave receiving plate, a left push rod, a left hanging device, a left triggering device, a lower pressure gauge, a high-pressure air cavity and a powder storage bin. By means of the design that the left shock wave receiving plate and the right shock wave receiving plate are located on the left side and the right side of the device respectively, explosion shock waves from different directions can be received in an omnibearing mode, and it is ensured that no matter which direction of explosion occurs in a roadway, shock wave signals can be sensed in time; therefore, the response sensitivity and reliability of the device to explosion are improved, and explosion suppression failure caused by a receiving blind area is effectively avoided. Meanwhile, the left push rod and the right push rod are connected with the shock wave receiving plate and the trigger device respectively, it is guaranteed that the trigger device can act rapidly and accurately, the flameproof medium can be sprayed out in time, explosion flames are effectively prevented from spreading, and harm caused by gas explosion is reduced to the minimum.

The invention discloses a novel gas explosion blasting device which comprises a bottom cover, a bobbin, an upper cover and a detonation excitation structure, and the upper cover and the bottom cover block the two ends of the bobbin respectively; the side face of the copper pipe is provided with one or a plurality of face cutting holes, and tempered glass is pasted to the position, corresponding to the face cutting holes, in the bobbin. The bottom cover, the bobbin, the toughened glass and the upper cover form a sealed space; the upper cover is further connected with a one-way air inlet valve, and the one-way air inlet valve is communicated with the sealed space. Pre-blasting holes are formed in the edges of the end corners of the tempered glass, detonation excitation pipes of the detonation excitation structures are arranged in the pre-blasting holes, the detonation excitation structures detonate the detonation excitation pipes to enable the tempered glass to be broken, the high-pressure gas filled in the sealed space rushes out instantly, and then the blasting effect is achieved. The overall structure is simple, the gas explosion effect is achieved by bursting the tempered glass, the bobbin can be repeatedly used, and the manufacturing cost and the gas explosion cost are reduced.