2678 results about "High pressure gas" patented technology

The invention relates to the technical field of valve leakage detection, and particularly discloses an ultrahigh pressure gas valve leakage detection method and system. According to the method, a unified leakage feature vector is obtained through multi-source acquisition and processing; capturing a time sequence dependency relationship, and determining a micro leakage mode; carrying out abnormal peak detection to obtain a preliminary leakage probability; combining the initial leakage probability with real-time environmental parameters, and dynamically adjusting a judgment standard; comparing the unified leakage feature vectors through a judgment standard, fusing position coordinate triangulation positioning, judging whether micro crack leakage occurs or not, and obtaining leakage position estimation; the historical data sequence is fused, the micro crack development trend is predicted, and the early warning level is determined; and generating a corresponding response signal according to the early warning level, and outputting micro crack leakage early warning. Multi-source data fusion, dynamic threshold adjustment and position prediction can be carried out, the accuracy and robustness of micro crack leakage detection are remarkably improved, and efficient guarantee is provided for safe operation of a pipeline.

The invention discloses a spiral steel pipe weld defect detection device applied to X-ray detection, and relates to the field of steel pipe weld detection, the spiral steel pipe weld defect detection device comprises a base and a movable platform mounted at the upper end of the base, and the upper end of the base is provided with a steel pipe; a stirring roller and a lifting roller are rotationally installed at the upper end of the movable platform and located below the steel pipe fitting. According to the spiral steel pipe welding seam defect detection device applied to X-ray detection, high-pressure wind power is transmitted to the flow dividing pipeline through the pressurizing air outlet by the air blower, and the transmitted high-pressure air carries pressure to penetrate through an opening gap in the surface of the lifting roller to impact on the surface of a steel pipe; the cleaning brush at the upper end is driven to move back and forth in a reciprocating manner in cooperation with limiting of a movable plate and a limiting rod, so that surface residual impurities generated by contact of a pressurizing air outlet and a steel pipe fitting are subjected to auxiliary guiding and removing work, and flaw detection can be more accurate.

The invention discloses a power transmission line insulator dual defense system and method, and belongs to the technical field of power transmission line maintenance, in the system, a power supply subsystem generates, stores and conveys high-pressure gas, and a primary defense subsystem and a secondary defense subsystem are respectively communicated with the power supply subsystem through high-pressure conveying hoses to obtain a high-pressure gas source; the first defense subsystem is arranged around an insulator of the power transmission line and forms an annular air curtain to prevent rain and snow from being attached to the surface of the insulator; the secondary defense subsystem detects and removes rain and snow breaking through the annular air curtain; the photovoltaic power supply subsystem is used for providing power for the whole defense system; all the subsystems are electrically connected with the intelligent control subsystem, and the intelligent control subsystem is used for coordinating starting, operation and parameter adjustment of all the subsystems. The problems that an existing anti-icing technology is high in energy consumption and slow in response, an icing micromechanism is difficult to capture, and protection is insufficient due to the fact that extreme working conditions are difficult to reproduce are solved, and efficient blocking and removing of rain and snow are achieved.

The invention provides an intelligent fuse, and belongs to the technical field of circuit protection, and the intelligent fuse is characterized in that an upper housing is provided with at least one excitation chamber, the excitation chamber is internally provided with at least one excitation part and at least one impact part, and the excitation part releases high-pressure gas when receiving any one of an external trigger signal and an internal trigger signal; the lower shell is provided with at least one cooling cavity; the current-conducting plate is arranged between the upper shell and the lower shell, and the impact part moves towards the direction where the cooling cavity is located under the thrust action of the high-pressure gas so as to cut off the current-conducting plate; the self-control module is arranged outside the shell and comprises a current detection unit and a processing unit, and the current detection unit is used for detecting a current signal on the conductive plate; the processing unit is used for generating an internal trigger signal according to the current signal. The beneficial effects of the invention are that a dual-trigger mechanism and redundancy design of an internal trigger signal and an external trigger signal are adopted, so that normal action can still be ensured when any signal fails, and the breaking reliability is improved.

The invention discloses a compressed air energy storage system which comprises a compressor, a heat exchanger, an air storage mechanism and a turbine, and the compressor is used for absorbing air, compressing the air into high-pressure air and concentrating and heating moisture in the air; the heat exchanger comprises a shell, a gas flow channel and a water flow channel, the gas flow channel and the water flow channel are arranged in the shell in an isolated mode, a first gas inlet and a first gas outlet are formed in the two ends of the gas flow channel, and a first water inlet and a first water outlet are formed in the two ends of the water flow channel. The first water inlet is connected with the compressor, receives pressurized hot water and finally discharges the hot water through the first water outlet; the gas storage mechanism is connected with the first gas outlet and stores gas; in the energy release stage, the first gas inlet is disconnected with the compressor and connected to the turbine, the gas storage mechanism reversely releases gas, the heat exchanger releases heat energy and pressure potential energy stored in the energy storage stage to the gas, and the gas enters the turbine to expand and do work.

The invention discloses a microwave digestion tank with a rapid pressure reduction structure, and relates to the technical field of microwave digestion tanks. The microwave digestion tank with the rapid pressure reduction structure comprises a tank body and a tank cover, a mounting cavity is formed in the tank cover, a through hole is formed in the bottom of the mounting cavity, and an exhaust pipe is fixedly connected to the top of the through hole. According to the microwave digestion tank with the rapid pressure reduction structure, during rapid pressure reduction, when high-pressure gas in the sealing cavity is discharged through the through hole, gas-liquid separation, gas discharge and liquid return into the sealing cavity can be performed through the gas-liquid separation device, so that the liquid in the tank body is prevented from being taken out by gas flow, and the accuracy of a detection result is ensured.

The invention relates to the technical field of air tightness detection, and particularly discloses an automobile axle housing welding seam air tightness detection method, which comprises the following steps of: firstly, performing high-efficiency preliminary air tightness screening on an axle housing by using an automatic pressure drop method so as to efficiently judge whether a workpiece leaks or not; based on the judgment result, a leakage signal is used as a triggering mechanism, a thermal imaging system is dynamically activated, and transient local low-temperature characteristics formed by the throttling effect of high-pressure gas at a leakage point are captured in a non-contact mode. Furthermore, the collected thermal imaging sequence is deeply analyzed, and the collected thermal imaging sequence and a digital three-dimensional model of a workpiece are subjected to spatial correlation mapping, so that a complete automatic process from macroscopic judgment of the leakage phenomenon to accurate positioning of three-dimensional space coordinates of a leakage source is finally formed. In this way, efficient automatic screening and accurate defect positioning capacity can be organically combined, and therefore the intelligent level and the closed-loop efficiency of the whole production quality control link are remarkably improved.

The utility model discloses a battery box body, a battery pack and a new energy automobile. Belongs to the technical field of vehicles and comprises a beam body, the beam body defines an exhaust channel, a first exhaust hole and a second exhaust hole are formed in the two sides of the beam body in the width direction of the beam body respectively, and the first exhaust hole and the second exhaust hole are staggered in the height direction of the beam body. The exhaust valve of the battery cell on one side of the beam body is communicated with the exhaust channel through the first exhaust hole, the exhaust valve of the battery cell on the other side of the beam body is communicated with the exhaust channel through the second exhaust hole, and when thermal runaway happens to the battery cell on one side of the beam body, high-temperature and high-pressure gas generated by the battery cell can be exhausted into the exhaust channel. The staggered first exhaust holes and the second exhaust holes can prevent gas exhausted into the exhaust channels from being directly exhausted to the battery cells on the other side of the beam body, the risk that the battery cells on the other side of the beam body are heated can be reduced, and therefore the safety risk can be reduced.

The invention relates to the technical field of filtering devices, and discloses compressed air self-cleaning type filtering equipment and a back flushing method, the compressed air self-cleaning type filtering equipment comprises a filtering unit, and the filtering unit comprises a filtering net; the back flushing unit comprises a main back flushing mechanism and an auxiliary back flushing mechanism, the main back flushing mechanism conducts back flushing on the filter screen through compressor finished product gas, and the auxiliary back flushing mechanism comprises a gas storage tank and an inflation pump and conducts back flushing on the filter screen through gas stored in the gas storage tank; the adjusting unit comprises a control valve and a sealing plate, the adjusting unit further comprises a transmission mechanism, and when the sealing plate rotates, the working state of the control valve is changed through the transmission mechanism. According to the back flushing device, the auxiliary back flushing mechanism is arranged to perform back flushing on the filter screen, when compressed air introduced by the main back flushing mechanism is insufficient, the auxiliary back flushing mechanism is switched, high-pressure air in the air storage tank is utilized to perform back flushing on the filter screen, and the situation that the cleaning effect is poor due to insufficient air pressure is avoided.

The invention relates to a litz wire processing technology and a squaring machine, and relates to the technical field of litz wire processing, and the litz wire processing technology comprises the following steps: S1, wire preparation; s2, manufacturing an enameled single wire; s3, bunching; s4, twisting is carried out; s5, squaring; s6, film covering and insulation treatment; and S7, forming. According to the litz wire processing technology, the squaring machine and the dust removal mechanism, the cleanliness of a stranded wire in the squaring process is effectively guaranteed, specifically, an annular pipe with a plurality of air outlet heads A and air outlet heads B and a dust falling pipe are arranged in the dust removal box, the air outlet heads can evenly blow out high-pressure air, dust and impurities on the surface of the stranded wire are effectively removed, and the dust removal efficiency is improved. In addition, the electrostatic generator and the electrostatic dust collection plate in the air inlet box can effectively prevent dust from flying, the dust removal effect is further enhanced, it is ensured that the surfaces of the stranded wires are clean, the quality of subsequent procedures is improved, meanwhile, the influence of dust on mechanical parts of the squaring machine is reduced, and the quality of the squaring machine is improved. And the service life of equipment is prolonged.

The invention discloses a gas-water pulse pipeline flushing method, and particularly relates to the field of industrial cleaning. In the maintenance and new construction of a water supply pipeline, pipeline flushing is a key link for guaranteeing the quality of supplied water, and an existing gas-water pulse pipeline flushing technology is characterized in that air is compressed, and then high-pressure gas with a certain frequency is added into the pipeline to form discontinuous two-phase mixed high-speed flow with water, so that impurities, sludge and the like in the pipeline are driven along with the gas-water mixed high-speed flow; and then the water is discharged out of the pipe. The pressure of a traditional air-water pulse system is generally 0.5 MPa, and in actual operation, the pressure can be reduced to 0.3-0.4 MPa, so that the problem that the cleaning efficiency is reduced is solved. The pulse cleaning technology provided by the invention is based on a strict fluid mechanics theory, and a traditional gas-water pulse pipeline cleaning method is optimized. According to the technical scheme, on the premise that safety and reliability of the system are guaranteed, the impact performance is improved by more than 50% through air pressure improvement of 0.5 MPa to 0.7 MPa and dynamic adjustment of the nozzle angle through the double-loop dynamic coupling control framework, and a more efficient solution is provided for water supply pipeline cleaning.

The invention discloses a pipeline system for improving the self-pressurization speed of a gas vehicle and reducing the inlet gas temperature rise and a vehicle, and relates to the technical field of vehicle power system heat dissipation, the pipeline system for improving the self-pressurization speed of the gas vehicle and reducing the inlet gas temperature rise comprises an LNG vaporization pipeline, the LNG vaporization pipeline comprises a gas cylinder and a vaporizer, and the LNG vaporization pipeline is used for outputting vaporized LNG to an engine; the supercharging pipeline comprises a supercharger and an intercooler and is used for supercharging outside air to form high-temperature and high-pressure gas and cooling the high-temperature and high-pressure gas so as to convey the high-temperature and high-pressure gas to an engine intake manifold; the cold and heat energy coupling area, a channel between the gas cylinder and the vaporizer and a channel between the supercharger and the intercooler penetrate through the cold and heat energy coupling area so that heat exchange can be conducted between the high-temperature and high-pressure air and LNG. Cold and heat exchange can be achieved through LNG cold energy and the pressurization pipeline, meanwhile, the vaporization efficiency is improved, and the heat dissipation burden of the intercooler is relieved.

The invention provides a coal mill inlet pipeline coal blockage removing method and device and electronic equipment, and relates to the technical field of boiler operation and maintaining.The coal flow state data can be collected in real time through a monitoring sensor set arranged at the coal blockage prone section of a pipeline, coal flow abnormity can be accurately judged based on the data, and an alarm is triggered; meanwhile, the coal feeding system is controlled in a linkage mode to adjust the operation state and start a high-pressure air source, high-pressure air flow accurately acts on a blocked coal accumulation area in the pipeline through a jet unit capable of being adjusted in a directional mode, and whether blocked coal is removed or not can be judged according to continuous feedback data of a monitoring sensor set; and the high-pressure gas source is stopped when the clearing standard is reached, and the normal operation of the coal feeding system is recovered, so that the problems that the coal blockage cannot be accurately identified due to insufficient monitoring precision and an impact blind area is caused due to the non-directional adjusting function of the blockage clearing device in the prior art can be solved.

The invention discloses a transformer arc fault equivalent test device and a control method, and relates to the technical field of power equipment fault simulation and safety test, and the method comprises the steps: carrying out the corresponding high-pressure gas storage through a high-pressure gas storage unit according to target pressure data calculated by a choking flow dynamic coupling model; the quick release unit is used for matching fault duration according to the test trigger instruction so as to release the high-pressure gas stored in the high-pressure gas storage unit; the energy injection unit injects high-pressure gas into the test oil tank to form shock waves; the safety protection unit starts an interlocking protection mechanism based on the test data; the monitoring control unit controls each unit to act, monitors the operation process of each unit in real time, and obtains and identifies the validity of test data to optimize the test process; according to the invention, automatic test process control is realized, the arc fault key damage effect can be accurately quantified and reproduced, high-precision matching of pressure wave time domain characteristics is realized, and the reliability of a test result is ensured.

The invention discloses an easy-open lid accurate counting device and method, the device comprises a chute, a photoelectric sensor and a gland assembly, and the gland assembly comprises a gland block, an optical axis, a spring and a pulse air source assembly; a directional separation spraying hole is formed in the bottom of the cover pressing block, when high-pressure gas conveyed by the pulse gas source assembly is sprayed out from the directional separation spraying hole, thrust towards the photoelectric sensor is applied to the to-be-counted easy-to-pull covers, and the easy-to-pull covers are pushed to enter a counting area one by one for counting; and the counter-acting force generated by gas injection drives the cover pressing block to move upwards along the optical axis, the spring is compressed, and therefore the adjacent clamped easy-to-pull covers are separated through the knocking force. According to the technical scheme, the directional separation spraying holes are matched with the pulse air source, the functions of air injection cover pushing and counter-acting force knocking separation are achieved at the same time, the clamping problem of the adjacent easy-to-pull covers is effectively solved, it is ensured that the easy-to-pull covers pass through the counting area one by one, and the counting precision is remarkably improved.

The utility model discloses an ultrasonic phased array detection device for a circumferential weld, which comprises a frame used for placing a workpiece; the detector is used for detecting a welding seam; the oscillator oscillates the welding seam when approaching the welding seam; the spray head blows external high-pressure gas to a welding seam; and the moving assembly drives the detector, the oscillator and the spray head to move in the hemispherical space. The beneficial effects of the utility model are that through cooperative operation of the moving assembly and the arc-shaped assembly, multi-angle detection of a workpiece is facilitated, and the detection precision is effectively improved; and through the combined action of the oscillator and the spray head, welding slag can be conveniently cleaned, and the detection precision is indirectly improved.

The invention discloses a device for driving used sand to regenerate through airflow. The device comprises a shell, a sand inlet, a regeneration assembly, an air supply assembly and a sand outlet. The regeneration assembly comprises a collecting bin, a wear-resistant disc, a blowing valve, a blowing pipe and a flow guide plate; the collecting bin can receive used sand fed from the sand inlet, the blowing valve is arranged at the bottom of the collecting bin, the wear-resistant disc is arranged at the top of the collecting bin, and the blowing valve blows the used sand upwards through the blowing pipe to impact the wear-resistant disc; and the guide plate is arranged below the wear-resistant disc and is used for receiving the used sand after impacting the wear-resistant disc. According to the device for driving the used sand to be regenerated through the airflow, the used sand is gathered at the bottom through the collecting bin, high-pressure gas is introduced through the blowing valve to spray the used sand upwards, the used sand is efficiently driven to enter the blowing pipe in combination with the negative pressure effect of the venturi tube, and the used sand impacts the wear-resistant disc at a high speed to form friction vortexes, so that the used sand is regenerated. Therefore, high-efficiency regeneration of the used sand is realized; and the whole structure is simple and reasonable in design, convenient to operate and easy to maintain.

Embodiments of the present disclosure provides a respiratory ventilation apparatus including: a main body configured to generate a high pressure gas above atmospheric pressure. The main body may include a noise reduction device, the noise reduction device being configured to reduce a noise generated during an operation of the main body. The noise reduction device may include a gas inlet structure, a noise reduction housing, a blower cavity, and a gas channel. A gas may enter the gas channel through the gas inlet structure. The gas channel may be formed between a sidewall of the noise reduction housing and a sidewall of the blower cavity, and the gas channel may be configured to transfer the gas. The blower cavity may be disposed with at least one cavity gas inlet along a gasflow direction. The gas in the gas channel may enters the blower cavity through the cavity gas inlet.

The invention discloses a centrifugal machine for sludge dewatering, belongs to the technical field of sludge dewatering, and aims to solve the problems that when the centrifugal machine for sludge dewatering is used, sludge on the inner wall of a rotary drum can be gradually compacted to form a filter cake layer, particles in the filter cake layer easily form a bridging structure at an inlet of a through hole, and the sludge dewatering efficiency is affected. A controller is arranged on the outer wall of the supporting frame, a cylinder is arranged in the supporting frame, one side of the cylinder communicates with a drainage pipe, a first driving assembly is arranged in the cylinder, a dewatering assembly is arranged on one side of the first driving assembly, a second driving assembly is arranged in the cylinder and rotationally connected with the cylinder, and a sewage pumping assembly is arranged at the top of the supporting frame. According to the invention, dual blockage clearing of crushing blockages by the conical rod and purging by high-pressure gas is conveniently realized, shutdown disassembly is not needed, continuous smoothness of the water outlet hole is guaranteed, stable efficiency of centrifugal dewatering is maintained, and the dewatering effect is enhanced.

The invention discloses a landscape maintenance device for garden design. The landscape maintenance device comprises a supporting mechanism, a blocking mechanism and a limiting mechanism. The supporting mechanism comprises a spraying assembly, a pressure applying assembly, an electric telescopic rod, a supporting assembly and a liquid conveying assembly. The plugging mechanism comprises a plugging assembly and an extrusion assembly; the limiting mechanism comprises a pressure assembly and a buckle assembly. The spraying assembly comprises a spray head and an atomizing plate; the pressure applying assembly comprises a first fixing frame, a sliding blocking frame, a first spring and a pressing rod device. The extrusion assembly comprises a fixed pipe, a telescopic pipe, a round pipe and a ventilation device; an internal mechanism is driven through telescopic movement of the electric telescopic rod, residual liquid drops on the surface of the atomization plate are sucked in firstly, then collected objects are thoroughly blown out through high-pressure gas, residual water and impurities in the atomization plate and an internal flow channel are forcibly removed in a mechanical mode, manual intervention is reduced, and the atomization efficiency is improved. The service life of the atomizing plate and the nozzle runner is obviously prolonged, the maintenance cost is reduced, and the uniformity and reliability of each spraying are ensured.

The utility model discloses a mute damping pneumatic knife which comprises a shell, an air inlet assembly installed in the shell, a moving assembly driven by high-pressure air to reciprocate, a knife head arranged at the front end of the moving assembly and moving up and down along with the moving assembly, an exhaust assembly used for guiding air to be exhausted and a damping assembly. The damping assembly comprises a buffering sleeve, a spring and a guide ring, the guide ring is clamped in the shell, the buffering sleeve and the moving assembly are assembled into a whole and are installed on the shell in a suspended mode through the guide ring, and the spring is installed between the buffering sleeve and the shell. High-pressure gas drives the motion assembly to reciprocate at a high speed to drive the cutter to perform efficient vibration cutting, vibration caused by motion of the motion assembly is effectively reduced through the damping assembly, the cutter is almost free of vibration, the cutting quality is improved, the service life of the cutter is prolonged, and the pneumatic cutter is relatively simple in structure, low in maintenance cost, high in reliability and suitable for popularization and application. And a silencer is also arranged, so that the noise during working is effectively reduced, and a better working environment is provided.

The invention discloses a test device and method for simulating an ultra-high-speed penetration ground impact effect, and the device employs a static load loading system to apply a static load to the periphery of a sample so as to simulate a ground stress environment, and employs a dynamic load loading system to apply an impact dynamic load to the top of the sample so as to simulate ground impact. In the dynamic loading system, a phase change reaction kettle is used for heating liquid CO2 to a supercritical high-pressure state; the liquid filling module is used for filling liquid CO2 into the phase change reaction kettle; the gun barrel is used for receiving high-pressure gas released by the phase change reaction kettle and forming ground shock waves similar to a plane; the stress wave lens module is used for adjusting the width of shock waves through a stress wave lens combination and acting the shock waves on the sample; the control module can control the shock wave peak pressure by regulating the heating power of the phase change reaction kettle, and can control the duration time of shock waves by regulating the bore diameter of the gun barrel. According to the invention, controllable and high-fidelity simulation of the ultra-high-speed penetration impact effect is realized.

A ventilation drag reduction device includes a main housing, a first rectification assembly, a second rectification assembly, and a flow isolating assembly; the main housing is composed of a first segment, a second segment, a third segment, and a fourth segment; the first rectification assembly is composed of first rectification plates; the second rectification assembly is composed of at least one second rectification plate; the flow isolating assembly is arranged in a cavity of the third segment; the fourth segment is configured as an outlet end. On the premise that the total construction cost is not obviously increased, high-pressure gas is rectified in a cavity of the main housing, so that the turbidity of the high-pressure gas is reduced, and a stable insulating gas layer is formed at the bottom of a hull; in addition, the present invention further discloses a marine ventilation drag reduction system.

The utility model relates to the technical field of liquid-driven compressors, in particular to a single-action two-stage liquid-driven compressor system. Comprising a hydraulic driving cylinder, a first-stage compression air cylinder and a second-stage compression air cylinder are arranged on the two sides of the hydraulic driving cylinder respectively, a first exhaust cooler is arranged on a gas conveying pipeline, a second exhaust cooler is arranged on a high-pressure gas pipeline, and water cooling channels are formed in the cylinder walls of the first-stage compression air cylinder and the second-stage compression air cylinder respectively. A water inlet of the second-stage compression air cylinder is connected with a cooling water inlet pipeline, a water outlet of the second-stage compression air cylinder is connected with a water inlet of the first-stage compression air cylinder through a cooling water conveying pipeline, and a water outlet of the first-stage compression air cylinder is connected with a cooling water outlet pipeline. Cooling operation can be conducted inside and outside the first-stage compression air cylinder and the second-stage compression air cylinder, so that sealing pieces on the first-stage air cavity piston and the second-stage air cavity piston are protected, the service life is prolonged, the frequency of shutdown maintenance and replacement is reduced, and normal operation of the compressor is guaranteed.

The utility model provides a piston cylinder body and a vehicle suspension device, comprising: a front suspension lifting component comprising a first cylinder body and a first piston, the first piston forming a first air chamber and a first oil chamber in the first cylinder body; the first high-pressure gas storage tank is communicated with the first gas cavity through a first connecting pipe; the rear suspension lifting component comprises a second cylinder body and a second piston, and the second piston enables a second air cavity and a second oil cavity to be formed in the second cylinder body; the second high-pressure gas storage tank is communicated with the second gas cavity through a second connecting pipe; the first high-pressure gas storage tank and the second high-pressure gas storage tank are communicated with the high-pressure gas pump through a first pipeline and a first communicating pipeline, the first pipeline is provided with a second valve, and the first communicating pipeline is provided with a first valve. Buffering and damping effects of the left suspension and the right suspension can be adjusted so as to meet requirements of different road conditions, and driving experience of users can be improved.

The invention discloses smelting rapid deslagging equipment of an antimony metal smelting blast furnace, and relates to the technical field of smelting equipment.The smelting rapid deslagging equipment comprises a base plate, a furnace body is fixedly connected to the middle of the upper portion of the base plate, a feeding assembly is arranged on the upper surface of the base plate and located on the left side of the furnace body, and a waste residue treatment assembly is arranged on the upper surface of the base plate and located on the right side of the furnace body; a liquid metal discharge pipe is fixedly connected to the lower end of the left side of the furnace body, a waste residue discharge pipe is fixedly connected to the lower end of the right side of the furnace body, and a residue discharge assembly is arranged at the tail end of the right side of the waste residue discharge pipe. The height, relative to the bottom face of the furnace body, of the waste residue discharging pipe is larger than that, relative to the bottom face of the furnace body, of the liquid metal discharging pipe, and a high-temperature-resistant air inlet pipe used for gas introduction is fixedly connected to the lower portion of the rear side of the furnace body. The slag discharging assembly has the advantages that the inclined main channel is matched with the Venturi tube and the accelerating branch tube, boosting airflow is formed by high-pressure gas in the furnace, and the flowing speed of waste slag in the channel is remarkably increased.

The invention discloses a functional gradient type nano-composite glass fiber hydrogen storage bottle and a preparation and monitoring method thereof, and relates to the technical field of high-pressure gas storage equipment. The functional gradient type nano-composite glass fiber hydrogen storage cylinder comprises a modified polymer liner, a hydrogen storage functional layer, a gradient enhancement layer, a self-repairing protective layer and an embedded monitoring unit embedded in the structure which are sequentially arranged from inside to outside, so that the integration of structure enhancement, active hydrogen storage, damage self-repairing and intelligent monitoring is realized; the gradient enhancement layer optimizes material distribution according to stress distribution, and the overall mechanical efficiency and the lightweight level are improved; the hydrogen storage functional layer endows the bottle body structure with an auxiliary hydrogen storage capability; through cooperation of the self-repairing protective layer and the embedded monitoring unit, active repairing and real-time sensing of micro-damage are achieved, the reliability and safety of the hydrogen storage bottle are improved, and the service life of the hydrogen storage bottle is prolonged.

The invention provides a vehicle-mounted oxygen supply system and an automobile, and relates to the technical field of automobiles. The vehicle-mounted oxygen supply system comprises a compression device, a nitrogen-oxygen separation device and an oxygen supply pipeline device, the compression device and the nitrogen-oxygen separation device are respectively fixed on the vehicle body, the compression device comprises an air inlet and a high-pressure air outlet, the nitrogen-oxygen separation device comprises a high-pressure air inlet and an oxygen outlet, the oxygen supply pipeline device comprises an oxygen inlet and an oxygen supply port, the high-pressure air outlet is communicated with the high-pressure air inlet, and the oxygen outlet is communicated with the oxygen inlet. The oxygen supply port is formed in the inner wall of the vehicle body; the compression device is used for compressing external air into high-pressure gas, and the nitrogen-oxygen separation device is used for separating nitrogen and oxygen in the high-pressure gas. According to the vehicle-mounted oxygen supply system, oxygen is prepared through the compression device and the nitrogen-oxygen separation device which are fixed to the vehicle body, then the oxygen is dispersed into the vehicle through the oxygen supply opening in the inner wall of the vehicle body, oxygen is supplied to people in the vehicle, operation is convenient and fast, driving of a driver is not affected, and the air inlet and the oxygen supply opening are not prone to being blocked.

The invention provides a rocket engine short-time high-pressure high-speed jet flow simulation system and method.The simulation system comprises a high-pressure air source, a high-pressure storage tank, a Laval nozzle, a quick release mechanism, a test cabin and a measurement and control system, and the quick release mechanism is arranged in the throat of the Laval nozzle; the quick release mechanism is used for sealing and releasing the high-pressure gas stored in the high-pressure storage tank, the quick release mechanism is controlled by the measurement and control system to execute the release action, the high-pressure gas generates high-pressure high-speed jet flow through the Laval nozzle and acts on a to-be-tested piece in the test cabin, and high-pressure high-speed jet flow simulation of the rocket engine is achieved. Compared with a traditional device and method, cold airflow (air and / or nitrogen) is used for simulation, and the safety is remarkably improved; jet flows under different working conditions can be simulated only by adjusting parameters of the high-pressure storage tank, and reproducibility is good; core physical characteristics of high pressure, high speed, high noise and the like of real rocket jet flow are effectively reproduced, and key support is provided for structural bearing and acoustic vibration environment adaptability assessment.

Disclosed are a method, system, and apparatus of a rapidly expandable anti-drone mesh system and method. In one aspect, a system includes a protected asset, an armored mesh on the protected asset, a sensor system to detect a hostile drone to imminently collide with the protected asset in an impact zone, and a responsive mechanism of the protected asset to cause a high-pressure gas to rapidly expand the armored mesh in the impact zone of the protected asset when the sensor system detects the hostile drone to imminently collide with the protected asset. The armored mesh preserves the protected asset by causing the hostile drone to impact the armored mesh instead of directly the protected asset. The protected asset may be a building, a vehicle, a wearer of a tactical gear, a civilian, a soldier, a boat, a tank, a weaponry, an airplane and / or an infrastructure.