3649 results about "Gas passing" patented technology

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially an organ such as a lung, by adjusting pressure as needed to maintain a constant pressure within the organ even during external pressure fluctuations due, for example, to transportation of the organ in an airplane. Gas passing into and out of the organ may be conditioned to prolong tissue viability.

Systems and methods of the invention generally relate to prolonging viability of bodily tissue, especially an organ such as a lung, by adjusting pressure as needed to maintain a constant pressure within the organ even during external pressure fluctuations due, for example, to transportation of the organ in an airplane. Gas passing into and out of the organ may be conditioned to prolong tissue viability.

The utility model belongs to the technical field of air valves, and discloses an automobile, a massage seat and a seat air valve control device, comprising a massage air valve cavity, a massage air valve arranged in the massage air valve cavity, a waist support air valve arranged in a waist support air valve cavity, and air entering a main air inlet and passing through the massage air valve cavity and the waist support air valve cavity. The air enters an air bag connected with the waist support air bag connector and the massage air bag connector to form a waist support inflation air channel and a massage inflation air channel; gas in the gas bag is released through the massage gas valve cavity and the waist support gas valve cavity to form a waist support gas release gas path and a massage gas release gas path; the massage air valve and the waist support air valve control air to pass through the waist support inflation air path, the massage inflation air path, the waist support deflation air path and the massage deflation air path, and double services of waist massage and back massage are provided for a seat user. The massage air valve and the waist support air valve are used for replacing an electromagnetic air valve, so that the size is smaller, the energy consumption is lower, the resistance is smaller, the weight is lighter, the silence is better, the radiation is lower, and the cost is lower.

The invention discloses a steel structure weld defect detection device and method.The steel structure weld defect detection device comprises a U-shaped base, a transmission roller, an L-shaped frame, an ultrasonic probe, a liquid spraying mechanism and a display device, the transmission roller is arranged on the U-shaped base and used for supporting and rotating a steel pipe, and the L-shaped frame fixes the ultrasonic probe so that the ultrasonic probe can make contact with the surface of a steel pipe weld for real-time detection; a liquid spraying mechanism uniformly sprays water-based foam liquid on the surface of the welding seam, an air spraying device blows air into air holes in the welding seam, so that air enters the foam liquid through the air holes to form stable air bubbles, and a cleaning mechanism wipes the residual foam liquid on the surface of the welding seam to ensure that the surface is clean and tidy; according to the method, high-precision detection of the welding seam of the steel pipe is achieved, the automation degree of operation is high, manual intervention is reduced, the detection efficiency and accuracy are improved, and the continuity of detection and follow-up evaluation work can be improved.

The utility model belongs to the technical field of batteries, and discloses a cover plate structure and a battery, the cover plate structure comprises a top cover plate and a support plate, the top cover plate is provided with an anti-explosion valve and a protruding part, and the protruding part and the anti-explosion valve are arranged at an interval; the supporting plate is connected with the protruding part so that an exhaust channel can be formed between the supporting plate and the top cover plate, a first exhaust hole and a second exhaust hole are formed in the supporting plate, and the first exhaust hole and the second exhaust hole are both communicated with the exhaust channel; the projection of the second exhaust hole in the first direction at least partially coincides with the projection of the anti-explosion valve in the first direction. Thus, the supporting plate is arranged on the protruding part, so that an exhaust channel is formed between the supporting plate and the top cover plate, high-temperature and high-pressure gas can enter the exhaust channel through the first exhaust hole and the second exhaust hole when the battery is in thermal runaway, and the exhaust effect of the anti-explosion valve is improved; the supporting plate can limit the end part of the pole group, so that the pole group is prevented from moving and shielding the anti-explosion valve, and the safety performance of the battery is improved.

The invention relates to the technical field of smoke exhaust waste heat recovery devices, and discloses a waste heat utilization and recovery device and method applied to boiler combustion smoke, and the waste heat utilization and recovery device applied to the boiler combustion smoke comprises a bottom frame, and a heat absorption mechanism, a middle section partition plate and a heat release assembly which are fixedly mounted at the top of the bottom frame in sequence; through the arrangement of the heat buffering assembly, when the temperature of smoke is high, the heat absorbing fins can absorb part of heat and conduct the heat to the medium storage cavity, a medium in the medium storage cavity absorbs the heat to be evaporated into gas, and the gas is filled with an inflatable heat conduction film through a gas flowing cavity; the inflatable heat conduction film is expanded to store the gaseous medium, the gaseous medium is dissipated when the smoke temperature is low, the gaseous medium is condensed into liquid after heat dissipation, then the liquid is absorbed by the liquid absorption core plate and returns to the medium storage cavity, and therefore heat transfer and buffering are facilitated, and damage of thermal shock to device parts is reduced.

The invention provides a gas-liquid separation device, which comprises: a tank body, the side wall of the tank body is provided with a gas-liquid inlet and a liquid outlet, and the top of the tank body is provided with a gas outlet; the gas-liquid separation cavity is formed in the tank body, a gas-liquid separation unit is arranged in the gas-liquid separation cavity, and the gas-liquid separation unit comprises a rotational flow plate and a baffle plate assembly located below the rotational flow plate; the gas washing cavity is formed in the tank body and is positioned above the gas-liquid separation cavity; a gas washing unit is arranged in the gas washing cavity; wherein the gas-liquid inlet penetrates through the side wall of the tank body and extends inwards to be communicated with the rotational flow plate, the rotational flow plate is configured to enable to-be-separated gas-liquid fluid from the gas-liquid inlet to rotate and then enter the baffle plate assembly so as to realize gas-liquid separation, separated gas with liquid drops moves upwards, liquid removal is carried out through the gas washing unit, and the gas washing unit is used for washing the gas with the liquid drops. The gas after liquid removal is discharged through the gas outlet, and the separated liquid moves downwards and is discharged through the liquid outlet. The invention also provides a gas-liquid separation method.

The invention relates to the technical field of medium phase state determination, in particular to a PVT analyzer and method suitable for multi-component fluid medium phase state determination, and the PVT analyzer comprises a determination assembly, a test cylinder, a balance cylinder, a pressurization cylinder, a gas distribution pipeline, a first driving mechanism and a second driving mechanism. The structure is reasonable and compact, combination of gas with various components can be achieved through the multiple gas cylinders and the gas distribution pipeline, mixing of the gas according to the set ratio can be achieved by adjusting the gas distribution valve, the multiple gas cylinders can inject the gas into a rodless cavity of the pressurization air cylinder through the gas distribution valve and the gas distribution pipeline, and the gas injection efficiency is improved. The second driving mechanism drives the piston rod of the pressurizing air cylinder to continuously input gas in the rodless cavity of the pressurizing air cylinder into the rodless cavity of the balance air cylinder through the pressurizing pipeline and the one-way valve, so that the pressure of the rodless cavity of the balance air cylinder can be increased; and the precise gas distribution and gas pre-pressurization functions of multi-component gas can be realized.

The invention belongs to the technical field of gas turbine blade test equipment, and relates to a multi-gas-path coordinated regulation high-temperature blade gas thermosetting rotation test system, which comprises a test shell, a transmission shaft, a rotation assembly, a high-temperature gas supply assembly, a cooling gas supply assembly and a detection assembly. The transmission shaft can be driven to rotate through the rotating assembly, centrifugal force load borne in the actual operation process is simulated, high-temperature gas is conveyed into the test shell through the high-temperature gas supply assembly, a high-temperature environment is provided for the tested turbine blade, and thermal load borne in the actual operation process is simulated; cooling gas is conveyed into the tested turbine blade through the transmission channel by the cooling gas supply assembly, the cooling environment in the actual operation process is simulated, and finally various data of the test are detected through the detection assembly. Therefore, the flow heat transfer characteristic and the strength characteristic of the turbine blade under the actual operation condition can be obtained as far as possible through tests.

The utility model discloses a sparkling water machine, which belongs to the field of household electric appliances, solves the problems of splashing of water discharged from the sparkling water machine and unstable flow of the water discharged from the sparkling water machine, and adopts the technical scheme that the sparkling water machine mainly comprises a water supply component, a gas supply component, a mixing cavity and a gas-liquid separator, the gas supply assembly is communicated with the mixing cavity and supplies gas to the mixing cavity, the gas-liquid separator is provided with a gas-liquid separation cavity, a water inlet, a water outlet and an exhaust port, the gas-liquid separation cavity is communicated with an outlet of the mixing cavity through the water inlet, bubble water in the gas-liquid separation cavity is discharged through the water outlet, gas is discharged through the exhaust port, and the exhaust port is provided with a pressure release valve. A baffle for preventing high-pressure bubble water flowing in from the water inlet from rushing open the pressure release valve is arranged in the gas-liquid separation cavity; and the baffle is blocked between an impact path of the high-pressure bubble water and the pressure release valve. The utility model is mainly used for preventing the water outlet from splashing in the process of discharging bubble water, and improving the stability of the water outlet flow.

A linear actuator system includes a linear actuator including an outer body, an inner body disposed within the outer body, a fluid chamber at least partially extending between the inner body and the outer body, a piston chamber extending at least partially within the inner body, a valve configured to selectively fluidly couple the fluid chamber and the piston chamber to each other, a piston assembly including a piston, a variable volume within the piston chamber that extends between the piston and the valve, and a gas collector assembly including a fluid passageway. The piston assembly is disposed within the piston chamber, wherein a movement of the piston assembly causes a gas separated from a liquid within the variable volume to flow through the fluid passageway, through the valve, and into the fluid chamber.

The invention relates to the technical field of power distribution, in particular to an electric energy metering box for power distribution equipment, which comprises a box body, a box door, a mounting plate, a partition plate, a lead screw motor and the like, the box door is hinged to the front side of the box body, the mounting plate and the partition plate are connected in the box body, ventilation openings are formed in the left side and the right side of the box body, and the lead screw motor is mounted on the box body. A lead screw of the lead screw motor is rotationally connected with the bottom of the box. Electric appliance elements and an electric energy meter in the box body can be shot through the visual camera, numerical values on the electric energy meter can be read, the numerical values are recorded in the controller, if the visual camera shoots electric sparks, it is indicated that a fire risk exists in the box body, and the controller can control a second electromagnetic valve to be opened; inert gas in the gas compression tank enters the box body through the gas outlet pipe to dilute the oxygen concentration in the box body, so that fire cannot occur in the box body.

The invention relates to the technical field of engine control, in particular to air flow meter signal delay compensation equipment for the transient air-fuel ratio of an engine. Comprising a data acquisition device which comprises sensors arranged in N sections of gas inlet pipes from the gas inlet front end of an engine to a gas inlet valve of the engine and is used for acquiring gas parameters in the multiple sections of gas inlet pipes; n is a positive integer; the delay calculation device is connected with the data acquisition device and obtains total delay time based on the gas parameters; and the delay chip is connected with the delay calculation device and controllably superposes the total delay time to the air flow meter, and the air flow meter outputs delayed flow meter signals. According to the method, the gas parameters of the multiple sections of gas inlet pipes are collected through the sensors, the time of gas passing through each section of gas inlet pipe is calculated, the total delay time between the gas inlet front end of the engine and the gas inlet valve of the engine is obtained, the total delay time is considered into the coordination advance in engine transient control, and the overshoot risk in the prior art is avoided.

The invention provides a graph and circuit wet manufacturing device and a spraying method thereof.The device comprises a spraying cavity, a rotary table frame with an air expansion shaft, a front swing mechanism and a rear swing mechanism, a first driving motor drives a hollow rotating shaft assembly to drive the rotary table frame to rotate, and a gear transmission assembly drives a rear swing spray pipe to reversely swing in a fan shape; a non-concentric spraying track is synchronously formed with the front swinging spraying pipe; the spraying method comprises the following steps that firstly, a product is fixed to the rotary table frame and started to rotate; then, a rear swing spray pipe and a front swing spray pipe are driven by a gear transmission assembly and a second driving motor to swing synchronously; then, external chemical liquid medicine is conveyed to the two sets of spray pipes through the gas-liquid flow guide shaft in a direct liquid supply mode, the wide-angle nozzle is perpendicular to the surface of the product for spraying, and a non-concentric covering path is formed; and finally, in the drying stage, external gas purges and dries the surface of the product through the same pipeline structure. The invention relates to the technical field of graph and circuit wet manufacturing.

The utility model provides a production system. The production system is used for producing the porous metal material. The production system comprises a container containing molten metal and comprising an opening; the ventilation device comprises an air channel, the air channel is configured to allow target gas to pass through, and a plurality of through holes are formed in a target area of a target section of the ventilation device; the discharging device comprises a discharging channel extending in the vertical direction.

The invention relates to a gas injection device of a foaming injection molding machine, and belongs to the technical field of injection molding machines. The gas injection device comprises a gas source; a pressure reducing valve; an air inlet one-way valve; injecting air cylinders; a gas injection piston; the connecting rod mechanism is used for connecting the gas injection piston and the injection screw rod; the gas injection head is communicated with the gas storage chamber and the injection charging barrel; the gas injection one-way valve is located between the gas injection head and the gas injection cylinder, and gas in the gas storage chamber enters the injection charging barrel in a one-way mode through the gas injection one-way valve; and when the injection screw retreats in a pre-plasticized mode, the gas injection piston is driven by the connecting rod mechanism to slide in the gas injection cylinder, the volume of the gas storage chamber is compressed, after the gas pressure rises to exceed the melt pressure, the gas injection head is opened, and inert gas enters the injection charging barrel through the gas injection head. The gas injection system is simplified, the gas injection flow and pre-plasticizing of the injection screw are synchronously carried out, and the manufacturing cost of equipment is reduced.

The utility model relates to the technical field of dust treatment equipment, and discloses a dust removal equipment based on iron ore dressing processing, including: a base plate, a support column No. 1 is fixedly connected to the right side of the upper surface of the base plate; a dust removal mechanism, and the dust removal mechanism is arranged above the base plate. The utility model sets a primary treatment box, a filter screen, an air valve, an air guide pipe and a secondary treatment box. When the fan is running, the fan will extract dust-containing gas from the outside through the air inlet and allow these gases to enter the interior of the primary treatment box through the air outlet. When the dust-containing gas passes through the filter screen, the coarse dust particles in the gas will be blocked by the filter screen on the right side of the primary treatment box and fall into the dust storage box. When the gas enters the interior of the secondary treatment box through the air guide pipe, the fine dust particles in the gas will mix with water to form a suspension, which enhances the overall treatment effect of the base plate on fine particle pollutants and improves the overall dust removal effect of the base plate.

The invention relates to the technical field of fuel cells, in particular to an anti-explosion composite hydrogen fuel cell which comprises a cell box and a cell body arranged in the cell box, and a gas passing channel is formed between the outer side of a cell stack of the cell body and the inner wall of the cell box; an outer air inlet and an inner air inlet are formed in the bottom of the battery box; the battery box further comprises a fan, a sealing assembly, a nitrogen tank and a hydrogen concentration sensor, and the fan, the sealing assembly, the inert gas tank and the hydrogen concentration sensor are arranged in the battery box, so that when a trace amount of hydrogen leaks from the battery body, the fan actively and forcibly ventilates to quickly dilute and discharge the hydrogen, and continuous accumulation is avoided; and when the hydrogen is quickly leaked, the outer gas inlet is immediately sealed through the sealing assembly, and the inert gas tank is communicated with the inner gas inlet, so that an oxygen-free environment is quickly established, the deflagration condition is fundamentally eliminated, and the problems of single response mode and insufficient safety redundancy in the explosion-proof design of the traditional hydrogen fuel cell are solved.

The invention relates to the technical field of gas cleaning equipment, and provides a gas dust filtering device which comprises a dust removal chamber, a filtering part and a sweeping part, and the dust removal chamber is communicated with a gas inlet pipe and a gas outlet pipe through which gas passes; the filtering piece is arranged in the dust removal chamber, is provided with filtering holes through which gas passes, and is used for intercepting dust contained in the gas; the sweeping part is movably arranged in the dust removal chamber, located on the side, close to the exhaust port of the air inlet pipe, of the filtering part and used for sweeping dust accumulated on the surface of the filtering part. According to the technical scheme, the problem that the maintenance cost is increased due to the fact that a filtering device is blocked by intercepted dust when the filtering device is used for dedusting air in the related technology is solved.

The utility model relates to the technical field of air compressor heat recovery, and discloses a heat recovery pipeline device for a screw air compressor, which comprises a bottom plate, a shell and an air compressor main body, the shell is fixedly connected with the bottom plate, a support seat is arranged on one side of the shell, the air compressor main body is mounted at the upper end of the support seat through a fastener, and the air compressor main body is fixedly connected with the bottom plate. According to the air compressor, heat generated during working of the air compressor body is transmitted to the multiple sets of heat conducting fins below through the heat conducting blocks, and then the heat is effectively transmitted to gas passing through the spiral pipe through the multiple sets of heat conducting fins; then heated gas enters a heat conduction coil pipe through a conveying pipe and a gas inlet pipe, a motor drives a stirring column to rotate through an output shaft, multiple sets of stirring blades on the stirring column stir water, under cooperation of a plurality of threaded groove holes, flowing of the water in the water storage tank is accelerated, the water is fully heated, and the recovery efficiency is improved.

A gas-bearing centrifugal refrigerant compressor. A motor housing (1) and a gas outlet mechanism jointly form a main structure of the compressor. In the compressor, a motor stator (2) is powered on by means of an electric control system so as to drive a rotor (3) to rotate; the rotor (3) drives a first impeller (14) and a second impeller (15) to rotate; the first impeller (14) and the second impeller (15) do work on refrigerant gas entering a ventilation cavity; some gas leaks through mounting gaps of the first impeller (14) and the second impeller (15), passes through a sealing mechanism, and then enters between a gas bearing pack and the rotor (3); a gas film layer is formed when the rotor (3) rotates, achieving a gas bearing function; and the refrigerant gas entering a mounting cavity can cool the gas bearing pack. The compressor does not require an additional bearing gas supply system, simplifying the gas bearing design.

A gas detection device for detection of one or more gas analytes in an environment includes a housing including an inlet via which gas to be sampled from the environment enters the housing, a control system within the housing comprising a processor system and a memory system in communicative connection with the processor system, and one or more gas sensors within the housing in fluid connection with the inlet and in communicative connection with the control system. Each of the one or more gas sensors is independently responsive to one of the one or more gas analytes. The control system is configured to control flow rate of gas from the environment through an accessory device assembly including one or more accessory devices in fluid connection with the inlet on the basis of data for the accessory device assembly in fluid connection with the inlet.

The invention relates to the field of high-voltage or large-current switches with arc extinguishing or arc preventing devices, in particular to a circuit breaker. An existing circuit breaker is improved, a brand-new solid-sealed polar pole is adopted, and high-pressure gas is compressed and generated in the opening and closing process of the solid-sealed polar pole by means of linear motion of a transmission rod in the opening and closing process of the solid-sealed polar pole and an air cylinder in transmission connection with the transmission rod; high-pressure gas is subjected to heat dissipation through the heat dissipation pipe section of the slow-release exhaust pipeline, and then low-temperature high-pressure gas is continuously blown into the heat dissipation gas cavity through the slow-release exhaust pipeline, so that heat exchange is carried out in the arc extinguish chamber in the heat dissipation gas cavity, high temperature generated in the opening and closing process of the arc extinguish chamber is taken away, and heat dissipation and cooling of the arc extinguish chamber are achieved. According to the novel solid-sealed polar pole, heat dissipation and cooling of the arc extinguish chamber are achieved by means of power provided by an operating mechanism in the opening and closing process, other cooling equipment does not need to be configured, the system structure is simplified, and energy consumption is reduced.

The utility model discloses a quantitative conveying inert gas charging device for indicating neon lamp processing, which comprises a charging box, a quantitative gas conveying component fixed on the charging box is used for charging and processing a neon lamp, a neon lamp placing structure slidably connected on the charging box is used for supporting and fixing the neon lamp, and the quantitative gas conveying component comprises a support plate. A fixing frame is fixedly connected to the supporting plate and telescopically adjusts the position of a piston rod through a telescopic structure, a piston fixed to the piston rod penetrates through the quantitative pipe, and the quantitative pipe is communicated with the pressurized inert gas storage tank through the gas conveying pipe. According to the inert gas charging device for indicating neon lamp processing and capable of achieving quantitative conveying, the quantitative gas conveying assembly is arranged, a PLC conducts calculation according to inert gas needed by neon lamps of different types, a piston on a piston rod is driven to move under the auxiliary effect of a hydraulic cylinder on a fixing frame, and therefore the needed inert gas amount is pumped into a quantitative pipe; quantitative inert gas in the later period enters the neon lamp through the gas inlet.

The invention belongs to the technical field of charging piles, and particularly relates to a new energy automobile outdoor charging pile which comprises a charging pile body, a display screen is arranged on one side of the charging pile body, and a socket for connecting a charging gun is formed in one side of the charging pile body; a cooling mechanism is arranged in the charging pile body; the cooling mechanism comprises an air inlet frame and an air outlet frame which are arranged on the two sides of the charging pile body. External air is sucked into the air inlet frame through the breathable cloth, external impurities sucked into the air inlet frame can be reduced through the breathable cloth, then it can be guaranteed that only the air is sucked, and meanwhile normal operation of the fan blades is effectively protected. And the refrigeration sheet enables the temperature of the gas to be lower when the gas enters the charging pile body, so that cooling of the interior of the charging pile body is more facilitated.

The invention provides a feeding and shaping device for oil storage barrels of shock absorbers, and belongs to the technical field of polishing of oil storage barrels. Comprising an operation table, a supporting frame is arranged on the surface of the operation table, a shaping assembly for shaping an end opening of an oil storage barrel is arranged at the top of the supporting frame, the shaping assembly comprises an electric push rod, the electric push rod is fixedly arranged on the surface of the supporting frame, and a lower pressing rod is slidably arranged on the surface of the operation table; by arranging the shaping assembly and the cleaning assembly, the cleaning assembly can extrude gas in a tank body through movement of a lower pressing rod while the end opening of the oil storage barrel is polished, air force is sprayed out through an air outlet pipe and a spray head, chippings generated during polishing are blown away in time, the chippings are prevented from remaining on the inner wall of the oil storage barrel, the cleaning process is optimized, and the working efficiency is improved; concentrated cleaning after polishing is not needed, and time and labor cost are saved.

The invention belongs to the technical field of insulator replacement, and discloses a power-assisted upper limb exoskeleton robot for power transmission line tower insulator replacement, which comprises a support frame, a first servo motor is fixed at the top end of the support frame, an air injection mechanism is fixed outside the support frame, and an air pressure adjusting mechanism is arranged at one end of the air injection mechanism. Through cooperation of a gas conveying box, a corrugated conveying pipe, a fourth servo motor and other structures, the device can convey gas flow by starting the fourth servo motor and a fifth servo motor, gas is sprayed out through a gas conveying opening through the corrugated conveying pipe, and the clamping state of the cutting device is kept after a user cuts off a core rod; the angle of the air conveying opening is adjusted, glass fiber chippings and dust generated in the insulator core rod cutting process are vertically blown and swept on the cutting face, the situation that residues affect the follow-up installation sealing performance is avoided, and therefore the purpose that the device conveniently guarantees the insulator replacement accuracy and maintenance in an air blowing mode is achieved.

The present invention provides an integrated machine for automatically drawing and cutting stainless steel bars, belonging to the technical field of stainless steel bar drawing. The invention includes a base and a steel bar. A box body, a front support, a mounting frame and a rear support are sequentially installed on the base from left to right. It also includes: a cleaning and temporary storage component, a detection and support component, and an auxiliary discharging component; by the support component, the position change of the sliding rod is monitored in real time, and combined with the contact between the ball and the steel bar, a full-range detection of the surface defects of the steel bar is realized, improving the product quality; during the cutting operation, gas is transmitted to the installation cavity through the air guide branch and the connecting groove, pushing the sliding rod and the ball to tightly abut against the steel bar, forming a stable inelastic support structure, ensuring the flatness of the cut surface of the steel bar; the auxiliary discharging component can not only effectively dredge the possible blockage, but also form a negative pressure area inside the collection tank during the gas flow process, helping to adsorb impurities such as grease on the steel bar into the collection tank, ensuring the cleanliness of the steel bar surface.

A laser cutting nozzle (500), comprising a first sleeve (510), a first housing (520), a nozzle (540), and a flow equalization block (560). The first sleeve (510) is provided with a first light-passing and gas-blowing channel (511) and a first gas passage (550). The flow equalization block (560) is arranged within the first sleeve (510) and is provided with a second light-passing and gas-blowing channel (561), and the second light-passing and gas-blowing channel (561) is in communication with the first light-passing and gas-blowing channel (511). A plurality of second gas passages (562) are formed between the flow equalization block (560) and the first sleeve (510), the first gas passage (550) is in communication with the second gas passages (562), and the second gas passages (562) are in communication with the second light-passing and gas-blowing channel (561). The configuration of the laser cutting nozzle allows gas passing therethrough to change direction multiple times, achieving uniform gas dispersion, thereby ensuring gas pressure, improving the gas-blowing effect, and ensuring the shape of the cut seam.