1065 results about "Air cavity" patented technology

The invention discloses a ship plane segmented welding multi-robot path planning system based on visual inspection, and relates to the technical field of ship manufacturing, the ship plane segmented welding multi-robot path planning system comprises a multispectral visual inspection module which is mounted on a portal frame and comprises a laser scanning sensor and an infrared thermal imager, the system is used for collecting three-dimensional point cloud and temperature distribution data of ship plane segments in real time. According to the ship plane segmented welding multi-robot path planning system based on visual inspection, the problem of path planning misalignment caused by assembly errors, thermal deformation and complex working conditions in large ship plane segmented welding is fundamentally solved through a multispectral visual real-time perception and material self-adaption dynamic correction mechanism. A composite correction vector and space-time grid collaborative pre-judgment technology is adopted, the welding seam track precision is effectively improved, it is ensured that the weld leg size strictly reaches the standard in the high-difficulty processes such as wrap angle welding and vertical position welding of the maximum-size workpiece, the defects such as air holes and cracks are eliminated, and the rework rate and the quality risk are greatly reduced.

The utility model relates to an air duct structure and a cabinet machine in the technical field of air conditioners, the air duct structure comprises a main air duct, a fan, an air outlet frame and a grating, the grating is installed between the air outlet end of the main air duct and the air outlet frame, airflow in the main air duct contacts with the grating in the flowing process, the grating scatters eddy current, and the air outlet end of the main air duct is connected with the air outlet frame. Air flow blown out of the main air duct passes through the grille and then is blown to the air outlet frame, the pressure difference between the air flow and the air outlet frame is reduced, air outlet is smoother, and therefore abnormal sound is effectively eliminated. The installation position of the grille can effectively scatter the vortex area, meanwhile, installation operation of the grille is more convenient, the installation position is easy to operate, additional positioning pieces do not need to be added in the air duct to fix the grille, the grille only needs to be directly connected to the lower side of the air outlet frame or the upper side of the air outlet end, and the installation operation is convenient. The additional positioning piece is omitted, so that the smoothness of the air cavity of the main air duct is further improved, and the air resistance of the air cavity is reduced.

The invention provides a heat dissipation system and energy storage equipment, and belongs to the technical field of heat dissipation. The heat dissipation system comprises a first air duct structure and a second air duct structure, wherein the first air duct structure comprises first air duct paper with a first air cavity, a first air inlet and a first air outlet; the first air cavity is used for accommodating part of a first heating element; the second air duct structure comprises second air duct paper with a second air cavity, a second air inlet and a second air outlet, and the first air duct paper and the second air duct paper are arranged side by side; the second air cavity is used for containing a second heating piece, and the heating value of the second heating piece is smaller than that of the first heating piece. The air inlet fan is arranged at the first air inlet; the reversing fan is arranged at the downstream of the airflow direction of the first air cavity and the upstream of the airflow direction of the second air cavity; and the air outlet fan is arranged at the second air inlet, and the air outlet fan is used for introducing the air flow into the second air cavity and blowing the air flow out through the second air outlet. According to the invention, the uniformity of heat dissipation can be improved, and the aesthetic property of a corresponding product can be improved.

The invention discloses a sealing structure for a test, and an aging test and leakage rate detection method and system. The sealing structure comprises a tested sealing assembly and an air cavity assembly integrated in the tested sealing assembly, and serialized test samples with different filling rates and compression rates are formed by regulating and controlling the groove width and the groove depth of a sealing ring mounting groove so as to simulate various actual sealing states. An aging test adopts a multi-factor coupling accelerated aging method, and a plurality of material characterization means are combined to systematically evaluate the evolution rule of the sealing performance. According to leakage rate detection, static pressure maintaining and dynamic pressure adjusting dual-mode measurement is achieved through an air tightness detector, and the sealing characteristics under different pressure conditions are comprehensively reflected. According to the invention, direct and systematic detection of the leakage rate of the sealing structure is realized, and an innovative solution is provided for sealing performance evaluation and service life prediction of electrical equipment.

The utility model discloses an adjustable air pump which comprises a shell and an air inlet hole pipe arranged in the shell, a plurality of air inlet holes are formed in the pipe wall of the air inlet hole pipe, and the adjustable air pump further comprises an air inlet adjusting sleeve and an adjusting driving device used for driving the air inlet adjusting sleeve to axially move so as to adjust the sizes of the air inlet holes. The air inlet adjusting sleeve is arranged between the air inlet hole pipe and the shell in a sleeved mode. According to the adjustable air pump, the air inlet adjusting sleeve is arranged between the air inlet hole pipe and the air pump shell, and the adjusting driving device is arranged, so that the hole diameters of all the air inlet holes in the air inlet hole pipe can be accurately adjusted on the water surface. On-line adjustment of the aperture of the air inlet hole of the air pump can be achieved in the underwater environment, the tedious operation that the whole air pump needs to be manually disassembled and replaced in a traditional method is effectively avoided, the structural design is simple, operation is convenient and fast, and the working efficiency and economical efficiency are improved.

Disclosed is a method of reducing drag on the hull of the vessel by creating a Coanda flow on the hull by jetting a fluid onto the hull or surface continuous with hull. The fluid is jetted onto the hull or surface continuous with the hull at a location above or below the waterline of the vessel. The fluid is jetted from within a habitat positioned at least partially below the waterline, the habitat being vented to atmosphere. The habitat has an open end below the waterline. The Coanda flow extends entrains air below the waterline and adjacent to the hull. An air cavity or sheet is created by the jetted fluid. A system for reducing drag is also disclosed.

The invention relates to the technical field of biological medicine industry, and provides a multi-stage vacuum heat-insulation high-temperature experimental facility which comprises a body, the body comprises an external box body and an inner container fixed in the box body, a flow guide cover is fixedly installed in the inner container, a detachable material plate is installed in the flow guide cover in a clamped mode, and the material plate is connected with the box body. Steps which are diagonally arranged are formed at the upper end and the lower end of the inner container, an air channel is formed between the inner container and the flow guide cover, an air cavity is formed between the inner side of each step and the flow guide cover, and a movable push plate is arranged in each air cavity; it can be understood that the flow guide cover is arranged in the inner container, the air channel and the air cavity are formed between the flow guide cover and the inner container, airflow circulation is driven by means of movement of the push plate in the air cavity, and materials are evenly heated on the material plate; meanwhile, the material plate is clamped in the flow guide cover through the elastic piece and can be easily installed and taken out through operation of a hand lever, direct contact with the hand is avoided, and using convenience and safety are improved.

The invention discloses a hydrogen storage cylinder water pressure testing device and method, the device comprises a clamping assembly and a water injection and evacuation assembly, the clamping assembly comprises a clamping mechanism and a swing driving mechanism, and the swing driving mechanism is used for driving the clamping mechanism to swing so as to control the hydrogen storage cylinder clamped on the clamping mechanism to swing up and down; the water injection emptying assembly comprises a testing tool mechanism and a water injection pressurizing mechanism, the testing tool mechanism comprises a tool body, a vacuum pipe and a water injection pipe, the tool body is arranged in the bottle nozzle in a sleeved mode, and the vacuum pipe is provided with a gas inlet end extending into the hydrogen storage bottle and an exhaust end communicated with the outside; the water injection pipe is provided with a water outlet end communicated with the interior of the hydrogen storage cylinder and a water inlet end connected with the water injection pressurization mechanism, and the air inlet end is provided with a floating piece. The liquid level in the hydrogen storage cylinder swings relative to the hydrogen storage cylinder, so that the gas inlet end of the vacuum tube is driven to different areas in the hydrogen storage cylinder, gas is discharged outwards, it is guaranteed that the hydrogen storage cylinder is filled with liquid, formation of a gas cavity is avoided, and the testing accuracy is improved.

The utility model discloses a heat exchange plate, belongs to the field of air preheaters, solves the problem that better heat exchange efficiency cannot be obtained when a plate sheet with higher hardness is used in the prior art, and mainly adopts the technical scheme that the heat exchange plate is formed by welding two thin plates which are arranged front and back through a plurality of linear welding parts, the non-welded parts on the two thin plates are far away from each other to form an air cavity for flowing air, the left side of the air cavity is an air inlet side, the right side of the air cavity is an air outlet side, and the linear welding part is in an up-and-down fluctuating wave shape. The heat exchange plate is mainly used for improving the heat exchange efficiency while ensuring the strength of the heat exchange plate.

The invention discloses a micro-mixing nozzle integrating heat pipe cooling and heat regeneration and a combustor, the micro-mixing nozzle comprises a heat pipe assembly I, a micro-mixing sleeve, an air mixing module and a fuel pipe, the micro-mixing sleeve, the air mixing module and the fuel pipe are coaxially arranged, and the heat pipe assembly I comprises a heat conduction ring, perforated fins, a heat pipe and heat pipe radiating fins; the overall combustor comprises a fuel cavity, an air cavity and a cooling cavity which are sequentially, coaxially and fixedly arranged at intervals from bottom to top, and a plurality of micro-mixing nozzles which are symmetrically arranged relative to the center of the overall geometric central axis are installed in the air cavity and the cooling cavity. According to the micro-mixing nozzle integrating cooling and backheating of the heat pipe and the combustor, the inlet area of the combustion chamber can be rapidly cooled, the service life of the combustor is prolonged, meanwhile, heat of the inlet area of the combustion chamber can be effectively utilized to preheat air, and the combustion efficiency is improved. The problem that the service life of an existing combustor is short due to thermal damage of a high-temperature backflow area to a micro-mixing nozzle can be solved.

According to the carbon dioxide oil displacement tank capable of automatically adjusting the pressure, during daily storage, the change speed and amplitude of the pressure in the tank are maximum, so that the stability of equipment can be influenced, an air bag is arranged in a third air cavity, and when the pressure in the third air cavity changes, the air bag is closed, so that the stability of the equipment is improved. The air bag can be matched with the third electric valve and the second electric valve to release or suck air so as to adjust pressure change, the speed and amplitude of the pressure change are slowed down to be within a controllable range, and therefore the stability of air stored in the device is improved, the interior of the tank body is divided into three storage units, and the storage effect is good. The third air cavity, the second air cavity and the first air cavity are sequentially arranged from inside to outside, when the first air cavity leaks, the third air cavity and the second air cavity are in a closed state and do not leak with the first air cavity at the same time, the capacity of the first air cavity is the minimum, the capacity of the third air cavity is the maximum, and if the first air cavity leaks, the loss can be reduced to the minimum. Therefore, the safety of the device can be improved.

The invention relates to the field of research on hydrogen embrittlement sensitivity of metal materials, in particular to a device for detecting hydrogen embrittlement sensitivity of a metal material in pure hydrogen and hydrogen-doped environments. The whole device is divided into an upper clamp main body and a lower clamp main body which are oppositely arranged up and down, and the upper clamp main body is provided with an upper clamp upper side through hole, an upper clamp lower side through hole, an upper clamp left side through hole, an upper clamp right side through hole and a pressed rod insertion hole. The lower part clamp main body is provided with a sample fixing groove, a sealing groove, an air cavity, a lower part clamp left side ventilation channel, a lower part clamp right side ventilation channel, a lower part clamp upper side screw hole, a lower part clamp lower side screw hole, a lower part clamp left side screw hole and a lower part clamp right side screw hole. According to the device and the method, the real working condition of contact between gas phase hydrogen and a metal material in actual engineering can be simulated, the problem of experimental cost caused by equipment requirements and sample processing can be solved, and meanwhile, the operation process of an experiment can be greatly simplified.

The invention relates to the technical field of communication cables, and discloses a water-blocking flame-retardant underwater communication cable with a self-repairing function, which comprises an insulating layer, a conductor layer is arranged in the insulating layer, an optical fiber layer is arranged in the conductor layer, a spiral groove is formed in the outer wall of the insulating layer, and a Bragg grating is wound in the spiral groove. A shielding layer is arranged outside the insulating layer, a radial waterproof layer is arranged outside the shielding layer, and an inner sheath is arranged outside the radial waterproof layer; parts providing communication, power supply and sensing monitoring functions share one set of shielding layer, radial waterproof layer and composite armor layer, so that the complexity of underwater deployment of the cable is reduced; the formed air cavity is used for providing space for heating expansion of the cable, meanwhile, airflow moving in the air cavity can conduct local heat exchange with the conductor layer, and local overheating of the cable is avoided; the composite armor layer with a double-layer structure can prevent the braided belt from deviating and being unable to reset due to excessive local stretching, and the service life of the cable is prolonged.

The invention belongs to the technical field of underwater concrete construction, and particularly relates to an underwater concrete sample sampling device and method.The underwater concrete sample sampling device comprises a cylindrical mold, an overwater traction mechanism and a pressurization suction pump, a bottom support is arranged at the bottom of the cylindrical mold, a support is installed on the lower portion of the bottom support, and a cavity is formed in the cylindrical mold; the inner side end face of the cylindrical mold is composed of a first elastic plate, the outer side end face of the cylindrical mold is composed of a second elastic plate, a groove is formed in the first elastic plate, an air hole connected with the cavity is formed in the top face of the cylindrical mold, the pressurization suction pump is connected with the air hole through a pipeline, and a floating plate is installed on the side face of the top end of the cylindrical mold. According to the groove and the bottom support, contact stress points can be increased when the concrete test piece is lifted, and the concrete test piece is prevented from being damaged. And the first elastic plate is deformed through pressurization and suction operation, so that the stripping degree of the cylindrical mold and the concrete test piece is controlled, and demolding of the complete concrete test piece is facilitated.

The invention relates to a clamp for providing a protective atmosphere for workpiece heating. A base is provided with a first pressing face and a first groove, a first flow channel is formed in the base, a first air port is formed in the side wall of the groove, and a second air port is formed in the side face of the groove; the material bearing plate is arranged in the first groove, the material bearing face and the first pressing face are coplanar, a first area is arranged on the material bearing face, and the heating opening communicates with the through groove to be coupled with an external heat source; the lower pressing piece is provided with a second pressing surface and a second groove, and is matched with the non-heating part of the workpiece during clamping, so that the two grooves define an air cavity in the first area; a plurality of third air ports are formed in the groove bottom of the second flow channel of the lower pressing part, and fourth air ports are formed in the other end; and the third air port and the first air port are communicated with the air cavity together. Therefore, a uniform, positive-pressure and directionally-overflowing protective atmosphere is established around the to-be-heated part, entrainment and invasion of oxygen / water vapor are inhibited, the oxidation discoloration phenomenon is reduced, and the consistency and yield of wetting, electric conduction and heat conduction are improved.

The invention belongs to the technical field of valves, and discloses a single-action pneumatic actuator control system which comprises a gas supply gas circuit, a pneumatic pilot valve, a first electromagnetic valve, a pilot loop and a delayed discharge loop. And the delayed discharge loop is configured to discharge the air pressure in the control air cavity, and after a preset time, the air pressure is gradually reduced to be below a set value so as to cut off the pneumatic pilot valve. During power failure in a whole platform range, the time-delay discharge loop can enable the whole control system to automatically switch into a pure pneumatic time-delay mode, so that the situation that the BDV immediately enters an open state due to power loss of the first electromagnetic valve is avoided, and the environmental adaptability and long-term operation reliability of the control system under extremely severe environments such as an ocean platform and flammable and explosive environments are remarkably improved; the safety performance is improved.

The invention belongs to the technical field of engineering elements, and particularly relates to a valve, in particular to a combination valve and a using method thereof. The combination valve comprises a valve body, an air chamber, a fluid chamber and a valve core, the piston is arranged in the air chamber in a lifting manner; the valve element is arranged at the bottom of the piston and used for opening and closing a flow channel in the valve body; the air inlet pipe is arranged on one side of the valve body and communicates with the air chamber cavity through an air channel; the adjusting assembly is arranged in the air inlet pipe in a sliding manner; when the air inlet pipe conveys compressed air into the air chamber cavity, the compressed air pushes the adjusting assembly to move in the direction of the piston so as to open the air channel. After the valve element closes the flow channel, the air cavity in the outer wall of the adjusting assembly communicates with the air chamber cavity through the air channel; if the air pressure in the air inlet pipe fluctuates, the adjusting assembly slides left and right in the air inlet pipe, and the air cavity is always communicated with the air chamber cavity so that the pressure in the air chamber cavity can be constant.

The invention relates to the related technical field of mechanical precision manufacturing, and discloses a caliper double-station intelligent clamp for mechanical precision manufacturing, which comprises a mechanical pedestal arranged above a mounting bottom plate, and a multi-dimensional positioning clamp arranged above the mechanical pedestal, a plurality of sets of telescopic clamping and positioning devices are distributed on the surface of the multi-dimensional positioning clamp in a rectangular array mode. A second-stage air cavity and a first-stage air cavity are formed in the multi-dimensional positioning clamp, and after the ejector pin makes contact with a workpiece, the telescopic clamping and positioning device communicates with the first-stage air cavity; by arranging the telescopic clamping and positioning devices distributed on the surface of the multi-dimensional positioning clamp in a rectangular array mode, multi-point-position accurate contact can be achieved according to the outline of a workpiece, when aero-engine blades with complex curved surfaces are machined, each telescopic clamping and positioning device can be automatically adjusted according to the angle of the curved surface of the blade, multiple clamping points act jointly, and the machining precision is improved. And the positioning error of the workpiece is controlled within an extremely small range.

The invention discloses a fire-fighting pipe network leakage positioning method based on pressure fluctuation, and relates to the technical field of fire-fighting pipe network detection, and the method comprises the steps: obtaining pressure fluctuation signals of at least two target positions with different heights on a target vertical pipe, discretizing the height range of the target vertical pipe according to preset precision, and obtaining a plurality of candidate leakage points, according to a pre-constructed wave velocity field model subjected to air cavity influence correction, calculating a theoretical arrival time sequence of pressure waves generated when each candidate leakage point leaks and propagating to each target position, and extracting actual arrival time characteristics of the pressure waves reaching each target position according to the pressure fluctuation signal; matching the actual arrival time feature with the theoretical arrival time sequence, and determining the candidate leakage point corresponding to the result with the highest matching degree as a real leakage point; the method has the beneficial effects that the problem that the positioning precision is reduced due to wave velocity gradient change and air cavity interference in the high-rise riser is solved, and the method has the advantage of improving the leakage detection reliability and the positioning precision.

The utility model discloses a vacuum sealing machine which comprises a base, an air exhaust hole is formed in the base, and the air exhaust hole penetrates through the lower wall of the base. The water tank assembly is located on the upper surface of the base, an air inlet part and an air outlet part are arranged on the water tank assembly, an air inlet channel of the air inlet part is communicated with the air exhaust hole, and the ends, located in the water tank assembly, of the air inlet part and the air outlet part are higher than the midpoint, perpendicular to the upper surface of the base, of the water tank assembly; the air exhaust assembly is provided with an air inlet, the air inlet is communicated with the air outlet channel of the air outlet part, and the air exhaust assembly is used for generating negative pressure; the turning cover is rotationally connected to the side, away from the air exhaust assembly, of the base, and the turning cover rotates between an unfolding position and a closing position; and a heat sealing piece is arranged on the side, away from the rotating connecting side, of the lower surface of the base and used for heating the bag opening, through the arrangement of the structure, gas-liquid separation can be effectively conducted, and liquid suck-back in the gas exhaust process is prevented.

The wave energy capturing and wave absorbing integrated device based on the Helmholtz resonance principle comprises a dike body, the dike body is sequentially provided with a front baffle, a front air chamber, a middle air chamber, a rear air chamber and a rear baffle in the wave incidence direction, and a three-stage series type wave absorbing structure is jointly formed; a front gas-guide tube and a rear gas-guide tube are respectively arranged at the tops of the front gas chamber and the rear gas chamber, and the front gas-guide tube, a top gas cavity of the middle gas chamber and the rear gas-guide tube are respectively connected with a confluence header pipe through pipelines; a one-way air inlet valve and a one-way exhaust valve are arranged on the top of each air chamber and each air guide pipeline; the air outlet end of the confluence header pipe is connected with a one-way air turbine. On the premise that the physical size of the structure and the construction cost are not remarkably increased, the wave absorbing frequency band can be effectively widened, particularly the wave absorbing performance on long-period waves is remarkably improved, and therefore the defects of a traditional breakwater and a traditional OWC device in the aspects are overcome.

This utility model discloses a powder pressing and cleaning device, relating to the field of auxiliary technology for refractory powder pressing. The utility model includes: a flexible hollow frame, comprising a first positioning end and a second positioning end, connected to the second positioning end by several deformation rods; a soft covering film, covering all the deformation rods to form an air cavity, with both ends of the soft covering film connected to the first and second positioning ends respectively; a gripping mechanism installed on the side of the first positioning end opposite to the air cavity, the gripping mechanism having an air passage communicating with the air cavity, the air passage communicating with the suction end of a suction collector; and a sweeping pipe, arranged along the extension direction of the deformation rods and arranged on a single deformation rod, communicating with the air cavity, with a brush arranged around its axis on the side of the sweeping pipe opposite to the deformation rod; to achieve adaptive adjustment according to the shape of the pressing head and efficient cleaning of the pressing gaps on the table surface during the pressing process.

The application discloses a solid droplet-based drag reduction ball preparation and testing method, and relates to the underwater drag reduction technical field.The preparation method comprises the following steps: performing decontamination treatment on the surface of a steel ball, configuring a PDMS solution and pouring the PDMS solution into a polytetrafluoroethylene mold with small holes with different curvature radii, performing vacuum degassing and solidification, and then peeling off to obtain solid droplet structures with different curvature radii, and bonding the solid droplet structures to the bottom of the steel ball.Through the regulation and control of the solid droplet curvature radius (2.5-10.8 mm) and the water entry speed, the high-speed camera technology is used to observe the change law of the sputtering crown formation, air entrainment and air cavity closure mode in the water entry process, the quantitative analysis of the underwater air cavity volume and the drag coefficient is combined, and the influence of the solid droplet curvature radius on the air cavity shape and the drag reduction performance is verified.The solid droplet structure optimizes the air film capture efficiency, significantly reduces the blunt body pressure difference resistance and the friction resistance, and the preparation process is simple, stable and suitable for the development of the underwater vehicle drag reduction technology.

This disclosure relates to the technical field of feed processing equipment. One embodiment of this disclosure provides a feed cooling device for auxiliary turning in feed processing, comprising: a cooling box and a rotating cover. The rotating cover is rotatably mounted inside the cooling box and is electrically driven to rotate. Feed inlet and outlet components are disposed on both sides of the cooling box. A turning and drying component is disposed inside the cooling box and the rotating cover, and the turning and drying component includes several turning racks. Air inlets are provided on the surface of the rotating cover. A docking circular plate is fixedly connected to the outside of the cooling box and rotatably mounted inside one end of the rotating cover. An air inlet pipe is provided on the docking circular plate. A side air inlet cover is installed on the outside of the cooling box, with one end of the side air inlet cover located inside the cooling box and connected to the air inlet pipe. This technical solution solves the technical problem in the prior art where poor cooling effect leads to increased time costs in the feed production process, affecting production efficiency.

The utility model provides a Helmholtz silencer based on a quasi-zero stiffness element, which belongs to the technical field of pipeline silencers and comprises an air cavity, a panel is mounted in the air cavity and connected with the air cavity through a vibrating diaphragm, a boss is fixedly mounted on the panel, and the vibrating diaphragm is connected with the boss. The boss is connected with one end of the supporting spring in the radial direction of the main pipeline, the other end of the supporting spring is connected with the air cavity, the two ends, in the axial direction of the main pipeline, of the boss are connected with one end of the pre-compression spring respectively, and the other end of the pre-compression spring is connected with the air cavity. The low-frequency noise in the pipeline is effectively controlled, the low-frequency noise control device has the advantages of being compact in structure, small in size and the like, and if noise of different frequencies needs to be controlled, only the compression amount of the pre-compression spring needs to be adjusted to change the overall rigidity of the structure; under the condition of the same neck area, a smaller air cavity volume can be adopted, the rigidity of each spring can be freely adjusted, and the height of the back cavity is greatly reduced.

The utility model discloses an integrated filter, including shell and filter core, filter core is coaxial with shell and is equipped with annular cavity between filter core outside and shell inner wall, and one end of filter core is equipped with water production mouth, and the both ends of shell are equipped with upper end cover and lower end cover respectively, and the inboard end face of upper end cover and lower end cover is equipped with the inner support of circumference distribution, is equipped with water inlet on lower end cover, is equipped with water outlet on upper end cover and water outlet communicates with water production mouth, and is equipped with the exhaust hole of communicating with annular cavity on upper end cover, the utility model discloses filter core and shell adopt the integrated structure of not needing to dismantle, and the better sealing, can bear greater pressure, and liquid can be evenly distributed on filter core outside after flowing into filter, can differentiate pressure protection filter core and dispersed liquid flow and improve filtration efficiency, can reverse flush after long -time use, need not to replace filter core, prolongs the service life of filter.

The invention belongs to the technical field of aircraft design, and discloses an amphibious aircraft water surface sliding speed reduction, turning and resistance reduction system and method.The system comprises two water baffles, and the two water baffles are arranged on the two sides of a hull structure below an aircraft waterline respectively and located between an aircraft belly fault step and a tail fault step; when the opening angle is small, the two water baffles form an air cavity at the rear portion through the ventilation effect to form the drag reduction effect, when the opening angle is large, the two water baffles reduce the exciting force caused by vortex falling, and the two water baffles are embedded in a groove of the rear fuselage when being forbidden to conform to the overall shape of the aircraft. The water baffles are innovatively arranged on the two sides of the hull structure of the seaplane, resistance or turning torque or a resistance reduction air cavity can be generated by changing the hydrodynamic shape of the seaplane when the seaplane slides on water, and the sliding process of the seaplane is controlled.

The radome gluing and pressing equipment comprises a fixed seat, a pressing mechanism and a gluing mechanism are arranged above the fixed seat, a supporting plate is rotationally connected to the interior of the fixed seat, a rotating ring is coaxially and fixedly arranged on the upper portion of the supporting plate, a driving mechanism is arranged on one side of the supporting plate, and a grinding mechanism is arranged above the fixed seat; the grinding mechanism comprises a limiting plate fixedly arranged on the rear side of the top face of the fixing base, a movable block is slidably connected to the middle of the limiting plate, abrasive paper is arranged on the bottom face of the movable block, a first annular groove is coaxially formed in the top face of the rotating ring, and a plurality of guide blocks are fixedly arranged on the inner side wall of the first annular groove in an annular structure at equal intervals. A supporting spring is fixedly arranged between the rear wall of the movable block and the inner wall of the limiting plate; the rear side of the movable block is connected with an air bag, an air cavity is formed in the movable block, and a plurality of air outlets are formed in the bottom face of the air cavity. The radar cover bonding surface polishing device can polish the bonding surface of a radar cover before a gluing and pressing process, remove a weak'surface layer 'generated by a mold pressing process, and guarantee the bonding effect.

The utility model provides a mobile air conditioner integrated heat preservation air cavity which comprises a shell, an upper cavity and a lower cavity are arranged in the shell, a first air inlet and a first air outlet are formed in the side wall and the top of the upper cavity respectively, and a second air inlet and a second air outlet are formed in the side wall of the lower cavity; the first volute assembly is arranged in the upper cavity and forms a first air duct, a first impeller is arranged in the first air duct, an evaporator is arranged on the first air inlet, and the first volute assembly is made of a heat preservation material; and the second volute assembly is arranged in the lower cavity and forms a second air duct, a second impeller is arranged in the second air duct, and a condenser is arranged on the second air inlet. The integrated heat preservation air cavity of the mobile air conditioner is compact in structure, light in weight, low in working noise and power consumption, large in air outlet amount, long in air supply distance and good in using effect.

A cleaning nozzle and an aluminum foil mill outlet flattening roller cleaning system comprise a shell, an oil inlet pipe connector, an air pipe connector, an air cap, a needle valve and other structures, an independent air cavity and an air supply pipe are matched with a control terminal, the nozzle is linearly installed on a first fixing frame and a second fixing frame, the system scale is flexibly expanded, key components are subjected to wear-resisting treatment, and the service life is prolonged. Meanwhile, sealing design is enhanced, and dismounting and maintenance are convenient. The system accurately controls oil mist composition through a control terminal and an automatic element, the functions of lubrication, cleaning and the like are achieved, and a nozzle does not need to be replaced or an additional device does not need to be used.