1579 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 present invention relates to a heaving plate wave energy power generation buoy with a variable cross-sectional area of a water column and a method thereof, belonging to the technical field of wave energy power generation buoys. It includes a buoy body, an air turbine is installed in the air outlet hole at the top of the buoy body, a central pipe located directly below the air outlet hole is arranged at the center of the bottom of the buoy body, a water column cavity communicating with the air outlet hole is formed between the outer side wall of the central pipe and the inner side wall of the buoy body, a heaving plate is fixedly connected to the bottom end of the central pipe, a plurality of uniformly distributed horizontal guide rails are fixedly connected between the upper outer side wall of the central pipe and the middle inner side wall of the buoy body, a telescopic partition plate assembly that divides the water column cavity into an outer water column cavity and an inner water column cavity is slidably installed on the plurality of horizontal guide rails, and a synchronous telescopic driving mechanism for driving the telescopic partition plate assembly to move along the horizontal guide rails is fixed at one end of the horizontal guide rail. The present invention can change the cross-sectional area ratio of the outer water column cavity and the inner water column cavity according to sea conditions, and obtain the optimal wave energy conversion efficiency.

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 an electric pressure cooker. The electric pressure cooker comprises a cooker body and a cooker cover detachably arranged on the top of the cooker body. An air cavity is formed in the cooker cover, and an exhaust valve communicated with the cooker body is mounted in the air cavity; a first air hole for exhausting air is formed in the top of the air cavity; a second air hole and a third air hole are formed in the bottom of the air cavity; the pot body is provided with a second air channel and a third air channel, the air outlet end of the second air channel is located in the middle of the pot body, and the air outlet end of the third air channel is located at the bottom of the pot body; an air exchange mechanism and an air release mechanism are mounted at the air cavity; the ventilation mechanism changes the unblocking and blocking states of the air holes through adjustment, and only outward exhaust is achieved; the gas release mechanism can open the gas release valve through adjustment, so that high-pressure gas in the pot body is discharged; the exhaust direction of high-pressure air leakage can be adjusted and changed, different use environments are met, and the applicability is improved.

The invention discloses an offshore water quality comprehensive treatment device utilizing an artificial wetland technology, and belongs to the technical field of sewage treatment. The offshore water quality comprehensive treatment device comprises a base, a water inlet and a water outlet are formed in the two sides of the base respectively, a lifting cavity corresponding to the water outlet is formed in the base, and a balancing weight is arranged in the lifting cavity in a sliding fit mode; lifting columns are symmetrically and integrally formed at the top end of the balancing weight, air cavities are symmetrically formed in the base, the top ends of the two lifting columns extend into the corresponding air cavities respectively and are in sliding fit with the air cavities, and ventilation assemblies used for conveying air in the air cavities to the water collection and drainage layer are arranged on the inner side walls of the air cavities; a plurality of teeth are arranged on one side of each lifting column in the length direction of the lifting column, and the teeth are meshed with swing assemblies used for generating periodic arc-shaped swing. And a vibration bracket is embedded in the filler layer. According to the invention, offshore tidal energy is utilized to realize self-adaptive opening and closing of the water outlet, and meanwhile, alternate shearing force is generated on the filtering filler in the base, so that the possibility of hardening of the filler after long-time working 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 provides a PEALD cavity structure, and relates to the technical field of coating equipment. The structure comprises an outer cavity, an inner cavity, a lifting system, a heating platform deck, an air exhaust system and a pressure controller. The inner cavity is arranged in the outer cavity, an opening matched with the heating carrying table is formed in the bottom of the inner cavity, and the lifting system controls connection and separation of the heating carrying table and the inner cavity. And the inner cavity is internally provided with the separator to form a conical reaction space, so that plasma distribution is improved. And the annular exhaust hole uniformly exhausts redundant gas, so that the film thickness uniformity is improved. A pressure controller is arranged in the outer cavity to maintain fixed pressure difference between the inner cavity and the outer cavity and prevent diffusion of process gas. According to the design, the independence of the reaction area is realized, the utilization rate of the precursor is improved, the maintenance process is simplified, and the cleanliness of the cavity is enhanced.

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 invention discloses a pipeline leakage monitor based on optical fiber interference and a monitoring method thereof, and belongs to the technical field of pipe network leakage monitoring. According to the invention, through the cooperation of the differential deformation of the outer cylinder and the inner cylinder and the air cavity, the two paths of sensing optical fibers are driven to generate reverse and equal-length length strain, and the improvement of the sensitivity of pipeline micro leakage sound pressure signal-optical phase signal conversion and the suppression of environmental common-mode noise are realized; a sound pressure signal generated in the leakage process of a pipeline is converted into phase change of light through a balanced optical fiber interferometer, a leakage signal is demodulated through a phase detection technology, and high-precision pickup of the tiny leakage sound pressure signal of the pipeline is achieved; the sound velocity is calibrated in real time through the temperature sensor and the sound velocity compensation module, and microsecond-level wireless signal time service is combined, so that the technical effects of large positioning error and difficulty in multi-device synchronous sampling caused by temperature drift of the sound velocity along with a transmission medium are solved.

The invention relates to a heaving plate wave energy power generation buoy with the variable cross section area of a water column and a method, and belongs to the technical field of wave energy power generation buoys.The heaving plate wave energy power generation buoy comprises a buoy body, an air turbine is installed in an air outlet hole in the top of the buoy body, and a center pipe located under the air outlet hole is arranged in the center of the bottom of the buoy body; a water column cavity communicated with the air outlet hole is formed between the outer side wall of the center pipe and the inner side wall of the buoy body, a heaving plate is fixedly connected to the bottom end of the center pipe, and a plurality of evenly-distributed horizontal guide rails are fixedly connected between the outer side wall of the upper portion of the center pipe and the inner side wall of the middle of the buoy body. A telescopic partition plate assembly dividing the water column cavity into an outer water column cavity and an inner water column cavity is installed on the horizontal guide rails in a sliding mode, and a synchronous telescopic driving mechanism used for driving the telescopic partition plate assembly to move along the horizontal guide rails is fixed to one ends of the horizontal guide rails. The proportion of the cross section area of the outer water column cavity and the cross section area of the inner water column cavity can be changed according to the sea condition, and the optimal wave energy conversion efficiency is obtained.

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 embodiment of the invention discloses a pressure counterweight floating Z-axis device which comprises an R-axis mechanism and a Z-axis, a shaft cavity corresponding to the Z-axis is formed in the R-axis mechanism, the upper end of the Z-axis is located in the shaft cavity, an adsorption air channel is formed in the Z-axis, an air floating air outlet hole and an adsorption air inlet hole are formed in the inner wall of the shaft cavity, and a negative pressure air outlet hole corresponding to the adsorption air inlet hole is formed in the Z-axis. A positive pressure air passage and a negative pressure air passage are arranged in the R-axis mechanism; the other end of the adsorption air channel is used for being connected with an air nozzle; one end of the positive-pressure air passage is connected with an external positive-pressure air source, and the other end is communicated with the air-floating air outlet; one end of the negative-pressure air passage is connected with an external negative-pressure air source, and the other end is communicated with the adsorption air inlet; a balance weight motor is arranged in the shaft cavity and comprises a stator and a rotor, and the rotor is connected with the Z shaft. According to the device, vertical floating buffering is achieved when materials are picked downwards and stressed, and meanwhile adjustment of external motor pressure on the Z axis and monitoring and feedback of the pressure of picked products are achieved.

The invention provides a diaphragm bubble point pressure testing device and a testing method. The diaphragm bubble point pressure testing device and the testing method are used for solving the technical problems that an existing diaphragm bubble point pressure testing device is complex in structure, at least two persons need to be matched for operation during testing, and air tightness is attenuated due to the fact that a drainage hole is independently formed or the resetting process is long due to the fact that drainage is detached. According to the diaphragm bubble point pressure testing device, an air cavity is arranged to be of a barrel-shaped structure with the bottom being a spherical surface, a liquid cavity is arranged to be of a hollow columnar structure with the upper portion and the lower portion being open, and a diaphragm to be tested is clamped between the air cavity and the liquid cavity in a sealed mode; the position of the air inlet nozzle is specially designed, so that the uniformity of an air pressure field in the air cavity can be ensured, and the residual liquid can be discharged through the air inlet nozzle when the air cavity is inclined by a certain angle by ingeniously combining with the rotating air cavity, so that the arrangement of an independent drainage hole is effectively avoided, and the air tightness of the testing device is ensured; and the whole testing device does not need to be disassembled, and the drainage time is reduced to several seconds from half an hour after the device is reset.

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 cooling device and annealing equipment. The cooling device comprises a cooling disc, a machine body provided with a cooling cavity, and an air intake and exhaust system. The machine body comprises a top wall plate located above the cooling cavity, and a boss with an air inlet diffusion cavity is arranged at the position, corresponding to the central area of the cooling disc, of the top wall plate. A top opening of the air inlet diffusion cavity communicates with an air inlet system located on the top face of the top wall plate. At least the central area of the bottom of the air inlet diffusion cavity is provided with a flow baffle; a plurality of air outlet holes are sequentially formed in the bottom of the air inlet diffusion cavity in the circumferential direction of the flow baffle, and the two ends of each air outlet hole communicate with the air inlet diffusion cavity and the cooling cavity correspondingly. According to the application, the air inlet diffusion cavity, the flow baffle and the plurality of air outlets are arranged in the central area of the top of the cooling cavity, so that the airflow field can be optimized, and the problem of low product yield caused by the fact that some peeled wafers fall back on the wafer in the cooling process after the annealing process is solved.

The invention discloses a novel floating breakwater-oscillating water column wave energy conversion device integrated system which comprises a breakwater assembly, the bottom of the breakwater assembly is fixed through an anchor chain, an air chamber is arranged in the breakwater assembly, the top of the air chamber is provided with an air hole pipeline, the air hole pipeline is connected with a turbine generator, and the turbine generator is connected with an oscillating water column wave energy conversion device. A permeable structure is fixed to the wave facing side of the breakwater assembly, and a gap is formed between the permeable structure and the breakwater assembly. A permeable structure, an oscillating water column wave energy device and a floating breakwater are integrated, the permeable structure is used for dissipating high-frequency short waves, reducing wave loads acting on the structure and improving the stability and survivability of the structure, and in order to improve the energy dissipation effect of the permeable structure, a certain distance is formed between the permeable structure and an air chamber structure; the OWC wave energy device is used for absorbing long-wave energy for power generation, and the blocking capacity of the integrated system to long waves is improved; through integration of the three, a basic platform is shared, sea area resources are saved, operation and maintenance cost is reduced, and diversification of functions of the integrated system is realized.

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 utility model discloses an air floatation motorized spindle with a damping cavity on a rotating shaft flange, which comprises a rotating shaft shell, a thrust bearing is arranged at one end of the rotating shaft shell, a plurality of throttling air taps are arranged on the thrust bearing, a closed air cavity is arranged on the rotating shaft shell, an air inlet is arranged on one side of the closed air cavity facing the thrust bearing, and a damping cavity is arranged on the other side of the closed air cavity. A sealing jackscrew is arranged above the closed air cavity, the pressure of the closed air cavity is maximum at the corresponding moment through the throttling air nozzle and the air inlet, air in the closed air cavity is slightly compressed, the air in the closed air cavity is exhausted to generate oscillation when the closed air cavity is staggered, and air hammer excitation generated between the damping thrust bearing and the flange is disturbed by air oscillation. The effects of reducing spindle vibration and improving high-frequency harmonic waves are achieved.

The invention relates to the technical field of quenching equipment, and provides an online quenching system which comprises a lifting mechanism and a box body, the top of the box body is covered with a box cover, the lifting mechanism is used for lifting the box body, the box body is provided with a cooling mechanism, and the cooling mechanism comprises a water spraying mechanism and an air spraying mechanism. During working, a heated metal workpiece is placed in the box body, the cooling mechanism is started, and the cooling mechanism comprises the water spraying mechanism and the air spraying mechanism. The water spraying mechanism is driven by a water pump, water is conveyed to a conveying pipe network arranged in the box body and the box cover through a pipe network, and the workpieces are evenly sprayed with water to be cooled through a plurality of spray heads. The air injection mechanism supplies air to a lower air cavity installed in the box body and an upper air cavity installed in the box cover through a third fan and a fourth fan, air injection cooling is conducted on a workpiece through an air outlet head, the combination mode can flexibly adjust the proportion and speed of water injection and air injection according to actual requirements, and therefore accurate control over the cooling speed is achieved.

The utility model discloses a purging cover structure which comprises an air inlet assembly, an air exhaust assembly and a side sealing plate. The air inlet assembly comprises a first plate and a second plate, the first plate and the second plate are distributed in a spaced mode to form a first air storage cavity, and the axis of a first air outlet hole of the first plate and the axis of a second air outlet hole of the second plate are parallel and distributed in a spaced mode. The air exhaust assembly is located on the side, away from the first plate, of the second plate, an air exhaust hole corresponding to the second air outlet hole is formed in a third plate of the air exhaust assembly, and the axis of the air exhaust hole is parallel to the axis of the second air outlet hole. The first gas outlet hole, the first gas storage chamber, the second gas outlet hole and the closed space of the purging cover structure sequentially guide gas to pass through, and finally the gas is pumped away from the closed space through the gas pumping hole. The air flow can be effectively controlled and guided, so that the efficiency and the uniformity of the substrate degassing process are improved, and the substrate can be ensured to have better quality and performance in the subsequent processing step.

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.

The embodiment of the invention provides a silencer structure and a compressor, the silencer structure comprises a bottom cover structure, the bottom cover structure comprises a first side and a second side which are opposite to each other, and the wall surface of the first side is used for abutting against a flange part of an upper bearing structure of the compressor; the boss structure is arranged on the bottom cover structure; the transition part comprises a plurality of convex hull parts which are arranged at intervals in the circumferential direction of the bottom cover structure, at least one convex hull part comprises a first boss and a second boss which have different axial distances from the bottom cover structure, and the at least one first boss and the at least one second boss are adjacently arranged in the circumferential direction of the bottom cover structure; and a first exhaust hole is formed between the adjacent first boss and second boss. According to the technical scheme, under the action of the first exhaust holes, the impact direction of the airflow can be changed, and therefore the direct blowing impact force of the high-pressure refrigerant airflow on the rotor is effectively improved.

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 utility model relates to the field of wine brewing, and discloses a vinasse spreading and airing device which comprises a base, a groove is formed in the upper end of the base, an air cavity is formed in the base, a supporting bottom plate is inserted in the groove in a sliding mode, moving wheels are arranged at the four corners of the bottom face of the supporting bottom plate, and a lifting mechanism for driving the supporting bottom plate to ascend and descend is arranged in the base. One end of the supporting bottom plate is fixedly connected with hinged frames which are correspondingly arranged on the two sides, the upper ends of the hinged frames on the two sides are hinged to a metal spreading and airing plate, the end, away from the hinged frames, of the supporting bottom plate is fixedly connected with a supporting column, heat dissipation holes are evenly formed in the metal spreading and airing plate, and an air blower is fixedly connected into the air cavity. And an air blowing hole communicated with the air cavity is formed in the inner wall of the groove. Compared with the prior art, the vinasse spreading and cooling device has the advantages that vinasse can be conveniently and rapidly spread and cooled, and the vinasse can be conveniently transferred and stacked.

The invention relates to an offshore photovoltaic support frame, which belongs to the technical field of photovoltaic panel supports and comprises a buoyancy tank, and a support structure is arranged on the buoyancy tank. The supporting structure comprises a rotating disc and a mounting frame, the axis of the rotating disc is vertically arranged, a mounting hole is formed in the top of the floating box, the rotating disc is located in the mounting hole, the floating box is rotationally connected with the inner circumferential wall of the mounting hole in a sealed mode, and a driving system is arranged in the floating box. According to the invention, the adjustment of the angles of the photovoltaic panel in two directions is realized, the illumination surface of the photovoltaic panel always faces the sun, the power generation efficiency of the photovoltaic panel is improved, when impurities exist on the surface of the photovoltaic panel, air discharged through the air holes acts on the photovoltaic panel, the impurities on the surface of the photovoltaic panel are blown away, the cleaning of the impurities on the photovoltaic panel is realized, and the power generation efficiency of the photovoltaic panel is improved. Impurities are prevented from affecting the power generation efficiency of the photovoltaic panel, and the air holes are driven to exhaust air in two modes of up-down floating of the floating box on the sea surface and pressing of the air bag.

The utility model provides a quick-disassembly suction nozzle tool which can quickly disassemble, assemble and replace a suction nozzle and improve the working efficiency. Comprising a connecting assembly and a suction nozzle assembly detachably assembled with the connecting assembly, the connecting assembly comprises a connecting base, the connecting base is of a hollow structure, an air inlet is formed in the connecting base so that an air cavity can be formed by the air inlet and the hollow portion of the connecting base, and a plurality of mounting holes are annularly formed in the outer wall of the connecting base; a mounting hole is formed in the connecting base, a ball is installed in the mounting hole in an interference mode, the outer wall of the connecting base corresponding to the position of the ball is tightly sleeved with an elastic reset sleeve, the suction nozzle assembly comprises a hollow connecting rod, a suction nozzle is embedded in the bottom of the connecting rod, one end of the connecting rod is arranged in the connecting base in a penetrating mode and communicates with the air cavity, and the other end of the connecting rod communicates with the air cavity. An annular flange is arranged at the top end of the connecting rod, and the upper end face and the lower end face of the flange have conicity.