93results about How to "High maintenance cost" patented technology

The utility model relates to the technical field of sewage suction and purification vehicles, in particular to a movable sewage suction and purification vehicle which comprises a bottom plate, a plurality of pulley mechanisms, a settling tank, a filter tank, a cover plate and a connecting mechanism, the pulley mechanisms are arranged at the bottom of the bottom plate, a push handle is arranged on one side of the bottom plate, and the filter tank is arranged on the other side of the bottom plate. The settling tank is placed at the top of the bottom plate, the top of the settling tank is connected with one end of a positioning block, the other end of the positioning block penetrates through the bottom plate, a sewage discharging assembly is arranged at the bottom of the front face of the settling tank, the filtering tank is connected with the bottom plate through the connecting mechanism, and the cover plate is connected with the filtering tank through a first bolt. A material pumping assembly is arranged on the cover plate, a discharging assembly is arranged at the bottom of the filtering box, and the connecting mechanism comprises a telescopic air cylinder, a connecting block, a fixing block and a second bolt.

This utility model provides a self-repairing structure for integrated circuits, relating to the field of circuit board repair equipment technology. It includes a repair equipment base and a clamping plate. The clamping plate is located on the top of the repair equipment base. A repair component slot is formed on the top of the repair equipment base. Two bearing through holes are formed through the inner wall of the repair component slot. Bearing rods are provided on the inner walls of both bearing through holes. A support plate is fixed to one side of each bearing rod, and a support frame is fixed to one side of the support plate. The clamping plate is located on top of the support frame. A sliding adjustment groove 1 and a sliding adjustment groove 2 are formed through the top and bottom of the support frame. A fixing rod 1 is provided on the inner wall of the sliding adjustment groove 1 and is fixed to the bottom of the clamping plate. A fixing rod 2 is provided on the inner wall of the sliding adjustment groove 2 and is fixed to the bottom of the clamping plate. A locking knob 1 is threaded onto the surface of the fixing rod 1, and a locking knob 2 is threaded onto the surface of the fixing rod 2. An integrated circuit board clamping groove is formed on one side of the clamping plate.

The utility model discloses a kind of for instrument and apparatus based on magnetic coupling axial motion mechanism, it includes device ontology, it includes first surface and second surface;Knob device, it includes first magnetic force coupler and elastic positioning assembly of assembly setting in first surface;Turntable device, it includes second magnetic force coupler and turntable assembly of assembly setting in second surface;Wherein, first magnetic force coupler and second magnetic force coupler coaxial arrangement and form magnetic coupling, elastic positioning assembly is driven turntable assembly synchronous rotation by magnetic coupling effect, to realize knob device and turntable device non-contact transmission connection;Also disclose a kind of instrument and apparatus.The utility model uses magnetic coupling axial or radial non-contact transmission connection mode, realizes the power transmission between knob device and turntable device, avoids the wear problem of traditional mechanical connection, prolongs service life, and realizes accurate rotation positioning every gear, meets the application scene of higher requirement to rotation accuracy.

This invention belongs to the field of blockchain technology, specifically relating to a semantic identifier blockchain retrieval method and system for large-scale distributed data. This invention designs a unified semantic identifier model, mapping data records from different sources and in different formats to multi-level scalable semantic paths. It constructs a MIR tree forest, integrating the organization of Trie and the verifiability of Merkle, with each scenario as the root. Only the root hash of each scenario or its aggregate root is maintained in the block header, thereby achieving overall constraint on the state of large-scale off-chain semantic indexes while maintaining lightweight on-chain storage overhead. Simultaneously, this invention designs corresponding index traversal and verification object construction mechanisms around various semantic retrieval modes, enabling clients to verify the correctness of target records with only limited path and node hash information. This provides a new technical path for unified semantic management and efficient verifiable retrieval of multi-source heterogeneous data in the HSB environment.

This utility model discloses a chassis protection frame in the field of personal mobility scooter technology, including a chassis, a mounting frame on the underside of the chassis, a mounting groove on the outer side of the mounting frame, multiple sets of protective frames inside the mounting groove, two sets of positioning blocks fixedly mounted on the upper side of each set of protective frames, and two positioning grooves for mating the positioning blocks on the upper side of the mounting groove. The positioning blocks are movably inserted into the positioning grooves. Mounting holes are provided through the outer sides of the mounting frame and positioning blocks, and fixing rods are movably inserted into the inner side of the mounting holes. The outer sides of the fixing rods, located on both sides of the mounting frame, are provided with threaded surfaces, and locking nuts are threaded onto the outer sides of both sets of threaded surfaces. This utility model, through its simple installation structure, facilitates the assembly and disassembly of the protective frame, improves the ease of installation and disassembly, reduces workload, and increases work efficiency. Furthermore, it allows for easy replacement of damaged parts, effectively reducing maintenance costs and avoiding resource waste. Its practical effect is excellent and worthy of promotion and use in the current market.

The utility model discloses a flexible protective device for treating a collapsed cavity at the top of a tunnel, which comprises at least two flexible protective nets which are arranged from top to bottom and connected to the inner wall of the collapsed cavity, and the aperture of the lower part of each flexible protective net is smaller than that of the upper part of each flexible protective net. The protective net is composed of a steel wire rope protective net body and a twisted-pair hexagonal flexible net body, the steel wire rope protective net body is formed by rhombic weaving of Galfan coating steel wire ropes, and the twisted-pair hexagonal flexible net body is formed by weaving of A-grade Galfan coating steel wires, overlaps the edge of the steel wire rope protective net body by 10-20 cm and is tied. The steel wire rope protective net is formed by splicing meshes of different specifications, splicing follows a specific principle, and steel wire rope buckles are used for connection. The device is further provided with anchor rods, spring hooks and other components, and the number and size of the components are determined according to the three-dimensional data of the collapsed cavity. Compared with a traditional protective net, the device can effectively absorb rockfall energy, is good in buffering effect, high in adaptability to different collapse cavities, easy and convenient to install and capable of reducing construction risks and guaranteeing tunnel construction and operation safety.

The geological drilling device for the water conservancy project comprises a base, adjusting assemblies are fixedly installed on the two sides of the top of the base, each adjusting assembly comprises a supporting frame, second motors are fixedly installed on the two sides of the bottom of the base, first synchronous wheels are fixedly installed at the output ends of the second motors, and second synchronous wheels are fixedly installed at the output ends of the first synchronous wheels. The front surface of the first synchronous wheel is in transmission connection with a synchronous belt, and the front surface of the synchronous belt is in transmission connection with a second synchronous wheel. According to the technical scheme, an existing hydraulic engineering geological drilling device usually conducts drilling operation in a manual or semi-automatic mode, after a drilling rod completes a drilling task and is taken out from the ground, a large amount of impurities such as mud and broken stone can be attached to the surface of the drilling rod, and the impurities can not only increase the weight of the drilling rod, but also improve the drilling efficiency. In addition, the existing drill rod connecting part may be abraded and corroded, so that the service life of the drill rod is shortened, and the maintenance cost of the equipment is increased.

The utility model relates to a kind of kink manipulator, belong to mechanical equipment technical field, kink manipulator includes drive assembly, transmission assembly and torsion clamping assembly;The linear stroke of first arc guide slot in transmission assembly one end is less than the linear stroke of second arc guide slot;Torsion clamping assembly includes pivot, main shaft, mechanical claw and rack;Drive assembly rotates main shaft by transmission assembly;Pivot one end is connected with first arc guide slot by connecting piece, and the other end passes through main shaft and is coaxially connected with rack;Main shaft one end is connected with second arc guide slot by connecting piece, and the other end installs the fixed part of mechanical claw;Two pincers of mechanical claw are symmetrically engaged connection with the two sides of rack;Two pincers are rotated by rack and drive pivot rotation when rotating;Two pincers are realized clamping, opening by engagement transmission when pivot and main shaft telescopic movement.This utility model is high in repeat positioning accuracy, clamping force is controllable, avoid product deformation or breakage, packaging film has no loose, wrinkle phenomenon.

The present application relates to the technical field of shield switch structure, and discloses a shield automatic switch structure and processing equipment, the shield automatic switch structure includes beam assembly, first drive mechanism, telescopic shield assembly and support connecting mechanism. When the shield automatic switch structure is used, the support connecting mechanism is arranged on the second side of the telescopic shield assembly, the support connecting mechanism occupies small floor space, and is convenient to arrange; the support connecting mechanism has small stroke and occupies small floor space; when the telescopic shield assembly is closed, the second side of the telescopic shield assembly is first connected and fixed on the first fixed support through the support connecting mechanism; when the telescopic shield assembly needs to be opened, the support connecting mechanism is disconnected from the first fixed support, the first drive mechanism drives the telescopic shield assembly to move away from the outer protection component, which can effectively prevent the telescopic shield assembly from being stuck during opening and closing, thereby effectively reducing the failure rate of the equipment, improving production efficiency and maintenance cost.

This invention discloses a suspended, flexible, deformable, and emotionally interactive robot. A flexible outer shell covers a flexible chassis, and a levitation airbag is installed inside the flexible outer shell. The levitation airbag is filled with buoyancy gas to provide the buoyancy required for the robot's suspension. An interactive control system inside the flexible chassis enables user interaction. A micro-airflow propulsion system is installed at the bottom of the flexible chassis, including multiple airflow generating units. By adjusting the airflow direction and intensity of the airflow generating units, the robot is driven to achieve spatial movement. The charging base station is an external device, and the bottom of the flexible chassis has an energy supply interface corresponding to the charging base station. When docked, the charging base station provides the robot with electrical energy or buoyancy gas. This invention is applicable to fields such as family emotional companionship, health and wellness, creating an intelligent indoor atmosphere, psychological relaxation assistance, and interactive displays in commercial scenarios. Through the organic integration of various systems, the robot achieves aerial suspension, flexible deformation, intelligent emotional interaction, and autonomous refueling.

The utility model discloses an electric dust removal steam air heater, which relates to the technical field of electric dust removers of thermal power plants, and comprises a steam main pipe, an air inlet of the steam main pipe is connected with a cold reheat steam source of the thermal power plant, the steam main pipe is connected with a plurality of steam branch pipes, and each steam branch pipe is connected with a steam heater; a drain pipe of the steam heater is connected into a soot blower of a selective catalytic reduction reaction area of the thermal power plant; the device further comprises a blowing air main pipe, one end of the blowing air main pipe is connected with the draught fan, the blowing air main pipe is connected with a plurality of blowing air branch pipes, and each blowing air branch pipe is connected with an air inlet of one steam heater. And a plurality of porcelain bushing heating air pipes are arranged at an air outlet of the steam heater, are connected into a dust removal chamber of the electric dust remover and are used for blowing insulating porcelain bushings of all electric fields in the dust removal chamber with hot air. According to the utility model, the technical problems of insufficient capacity, unstable electric field operation and high maintenance cost in the prior art are solved.

The invention designs a heat dissipation device and a communication system. The heat dissipation device comprises a base body, fins and an ion wind module. The ionic wind module at least comprises a discharge structure and an alternating current power supply, the discharge structure at least comprises a first electrode, a second electrode and a dielectric layer, at least part of the first electrode is exposed in the external environment, and at least part of the second electrode is embedded into the dielectric layer to form an electrode module; one of the first electrode and the second electrode is electrically connected with the positive electrode of the alternating current power supply, the other electrode is electrically connected with the negative electrode of the alternating current power supply, ionic wind can be generated between the first electrode and the second electrode, the heating element is cooled through the ionic wind, and compared with natural convection cooling, the heat dissipation efficiency of the heat dissipation device on the heating element is improved; compared with fan cooling and ion wind cooling, noise generated during operation of the heat dissipation device is reduced, the working stability of the heat dissipation device is improved, the maintenance frequency of the heat dissipation device is reduced, the maintenance period is shortened, and the maintenance cost of the heat dissipation device is reduced.

The utility model provides a kind of vacuum bag type packaging sealing device, comprising: support;Workbench, it is fixedly installed on support upper end;Positioning plate, it is fixedly installed on support one side;Sealing group, it is set in workbench upper end;Limiting group, it is set in positioning plate one side.This kind of vacuum bag type packaging sealing device, by setting limiting group and the like structure, limiting group is conveniently operated by hydraulic rod, cooperate through-hole and connecting pipe, improve the efficiency of air extraction and connection stability, also have strong versatility;Heating plate can be detached in sealing group, it is convenient to maintain replacement, heating pipe and sealing plate cooperation realize reliable heat sealing, support rod guarantee pressing plate stability, electric telescopic rod realizes automatic sealing, reduce labor intensity, overall device is efficient, convenient, stable, can guarantee vacuum packaging quality, suitable for a variety of vacuum bag, improve the efficiency and reliability of packaging work.

This utility model relates to the technical field of slag discharge devices for furnace slag coolers, and discloses a slag discharge speed adjustment device for furnace slag coolers. The device includes a slag discharge cylinder, with an adjustment cylinder fixedly connected to the outer wall near the bottom. A rotating disk is movably connected to the bottom of the inner wall of the adjustment cylinder. The top of the rotating disk has six equidistant, annularly distributed inclined adjustment slots. An adjustment block is inserted into one end of the inner wall of each inclined adjustment slot. The output end of the adjustment block is located on the upper surface of the rotating disk. A limit slide is provided at the bottom of the slag discharge cylinder. The top output end of the adjustment block is slidably connected to the top of the inner wall of the limit slide. Through the cooperation of the above structures, this device achieves precise adjustment of the slag discharge speed of the furnace slag cooler. The rotating disk is driven to rotate by a forward and reverse motor, causing the adjustment block to move within the limit slide, changing the cross-sectional area of ​​the slag discharge channel. Simultaneously, a stirring roller driven by a servo motor prevents slag blockage, improving slag discharge efficiency and production stability, making it more practical.

The embodiment of the application discloses a mountain road trap active detection method and system based on sound wave reflection, the method comprises the following steps: collecting the echo signal of the multi-path propagation of the multi-band detection sound wave in the to-be-detected mountain road area through a microphone array, and scoring the propagation path according to a path credibility scoring mechanism; if it is determined that the trigger condition is met, it is determined that the to-be-detected mountain road area has a trap, and a risk early warning is carried out; if it is determined that the trigger condition is not met, the second feature data and the first feature data are input into a pre-trained machine learning model, and the trap category of the to-be-detected mountain road area is determined according to the machine learning model. The system has a second-level response capability, greatly improves the safety, realizes full-process automation, reduces manual intervention, and greatly improves the mountain road inspection efficiency.

The invention discloses a tobacco shred width online sampling detection device and a detection method, and aims to solve the problems of low detection efficiency, insufficient real-time performance, high tobacco shred clustering lap joint rate, transparent pressing plate pollution and the like in the prior art. According to the technical scheme, the tobacco shred width online sampling detection device is arranged on a tobacco shred conveying line, the core of the tobacco shred width online sampling detection device comprises a material receiving and conveying mechanism, a material scattering device of a vibration scattering device, a tobacco shred flattening and conveying mechanism and a visual detection mechanism; the vibration shaking device is used for loosening and raking the clustered and lapped tobacco shreds, so that the lapping rate and the agglomeration rate are reduced, full preparation is made for flattening the tobacco shreds, and the single tobacco shred rate is increased. According to the detection method, detection is completed through differential conveying and primary spreading, four-layer progressive vibration material scattering, conveying, clamping and flattening and visual acquisition of high-flattening-rate tobacco shred images. According to the scheme, the uniformity of tobacco shred bulk materials is greatly improved, the clustering lap joint rate is reduced, pressing plate pollution is avoided, real-time online detection is achieved, the detection efficiency and continuity are improved, the detection efficiency is improved, and guarantee is provided for stable cigarette quality.

This utility model discloses a pneumatic valve bracket, relating to the field of pneumatic valve technology. It includes a fixing ring and a base plate. A pad is provided on the top of the fixing ring, and a shock-absorbing mounting mechanism is provided on the top of the pad. The shock-absorbing mounting mechanism includes a first shock-absorbing pad. This utility model, through the setting of the shock-absorbing mounting mechanism, can achieve the function of damping vibration at the connection between the valve and the bracket. During use, the first and second shock-absorbing pads are installed by the cooperation of a first bolt and a first nut, and a second bolt and a second nut. The first and second shock-absorbing pads dampen vibration at the connection between the valve and the bracket, avoiding the situation where, due to the difficulty in damping vibration at the valve-bracket connection, the fluid medium flowing through the valve causes continuous impact and vibration on the valve body. This vibration is directly transmitted to the valve body, accelerating wear and significantly shortening the valve's service life, thus ensuring the durability and practicality of the bracket.

The utility model discloses a transmission assembly, a power transmission device and a vehicle, the transmission assembly comprises a power shaft, a driven gear, a transmission part and a buffer part, a driving gear is arranged on the power shaft, the driving gear is suitable for being meshed with a power output device, a matching section is formed on the power shaft, and the driven gear is arranged on the matching section in a sleeving mode; the driven gear can rotate relative to the matching section, a first circumferential matching part is arranged on the driven gear, the transmission part is arranged on the matching section and rotates synchronously with the power shaft, a second circumferential matching part is arranged on the transmission part, and the second circumferential matching part and the first circumferential matching part are arranged correspondingly. When the driven gear moves in the circumferential direction relative to the matching section, the first circumferential matching part and the second circumferential matching part get close to each other or get away from each other, the buffering piece is connected between the first circumferential matching part and the second circumferential matching part, and the buffering capacity of the transmission assembly can be improved.

The invention relates to the technical field of communication, and discloses a multicast communication method and system based on a three-dimensional geographic position and electronic equipment, and the method comprises the steps: obtaining the three-dimensional geographic position of a target area; generating a space identifier of the target area based on the three-dimensional geographic position; performing service query based on the space identifier to obtain a mapping relation corresponding to the target area; performing routing addressing on the target area based on the mapping relation to generate a flow table; generating a multicast communication message based on the space identifier, and sending the multicast communication message to all receiving terminals in the target area according to a flow table; and screening effective terminals from all the receiving terminals based on the multicast communication message, so that each effective terminal receives and processes the multicast communication message. According to the method, the space identifier is generated through the three-dimensional geographic position, the precision limitation of a traditional mapping relation and the limitation of two-dimensional plane communication are broken through, finer communication granularity is achieved, three-dimensional space representation is supported, and multicast errors, omission and range generalization are avoided.

The utility model relates to coal preparation machine maintenance technical field especially relates to a screen plate replacement device for coal preparation machine vibrating screen, include: crossbeam, support, drive structure and adjusting structure, the screw rod is rotatively connected in the crossbeam inside, the connecting beam is slidably connected in the inside symmetry of crossbeam both ends, two connecting beams are respectively with the screw rod both ends screw connection, two connecting beams are fixedly connected with the support at the end away from each other, the utility model discloses a combination structure of'fixed base + lever handle + alloy steel draw hook'replaces artificial direct force with lever principle: when using, only need to open 20mm*20mm process hole in the edge of the screen plate to be replaced, embed the draw hook in the hole and hook the screen plate framework, press down the handle (force <=50N) can quickly lift the screen plate, the replacement time of single screen plate <=3 minutes, the efficiency is improved 90% compared with traditional method, effectively reduces the maintenance time length when vibrating screen stops, guarantees the smoothness of coal production process.

This invention belongs to the field of web page data parsing technology, specifically relating to a web page data parsing method based on a large language model. The method includes: obtaining the target website URL input by the user; performing preliminary parsing of the input URL using a large language model; parsing the DOM structure of each website and extracting HTML elements and their hierarchical relationships; generating corresponding data crawling scripts based on the parsing results; executing the data crawling scripts to extract the required data from each website; preprocessing the extracted data; fusing the preprocessed data from multiple sources; extracting key information from the fused data; and storing the finally processed and extracted information in a database. This invention achieves automatic parsing of complex web page data, intelligent entity extraction and knowledge expansion, as well as efficient data fusion and deduplication.

The utility model relates to a kind of water-tight installation nodes, belong to building roof technical field, specifically a kind of complex gutter water-tight installation nodes, including concrete wall surface and curtain wall aluminium plate, further include;Gutter, the gutter is set between concrete wall surface and curtain wall aluminium plate;Wing plate, the wing plate is fixedly installed in the side surface and top of concrete wall face;The utility model reaches the effect of ensuring that drainage is unobstructed, not easy to rust corrosion, solves the existing construction method fails to take anticorrosive measure, in humid environment, need frequently replace, not only improve maintenance cost but also cause structural durability and stability to drop, and fails to adjust gutter angle according to gradient, the practicability is poor.

The application discloses a kind of green building wall structure, comprising: wall, filter, water storage part and water supply assembly;Wall outside is planted pot for planting potted plant, is opened with cavity from top to bottom in wall, water storage part is equipped at the bottom of cavity, water storage part is suitable for containing rainwater flowing into cavity, water supply assembly rainwater in water storage part is sent to planting pot to irrigate potted plant, to realize saving resources, environmental protection, reduce environmental pollution.In the upper portion of cavity, filter is arranged, filter is used to filter rainwater flowing into cavity from the top of wall, impurities in rainwater are intercepted on filter, so as to avoid impurities in rainwater from causing blockage of water supply assembly, increase maintenance cost.

The application discloses an assembling mold of a modular structure with shear walls and a production method. The assembling mold comprises a bottom steel mold system, a fixed short side steel mold system, a fixed long side steel mold system, a sliding short side steel mold system, a sliding long side steel mold system, a column third side steel mold and a top steel mold system. The application can greatly improve the assembling and demolding efficiency of the assembling mold based on a motor and a hydraulic jack, thereby improving the production efficiency of the modular structure unit with shear walls. The displacement sensing control system is arranged on the hydraulic jack for demolding the first shear wall side steel mold system and the second shear wall side steel mold system, so as to avoid damaging the concrete columns on both sides or the self during the demolding process. The relative positions of the assembling molds of the parts are adjusted based on high-strength bolts, so as to avoid uneven settlement and increase the maintenance cost.

The invention relates to the technical field of the dermatology department, and discloses a dermatology department hair regeneration stimulation device which comprises a hair treatment positioning mechanism, the middle position of the hair treatment positioning mechanism is fixedly connected with a first position control mechanism, and the middle position of the first position control mechanism is connected with a second position control mechanism. The bottom end of the second position control mechanism is connected with a regeneration stimulation mechanism, the regeneration stimulation mechanism comprises a first positioning frame, and the inner wall of the first positioning frame is slidably connected with a second positioning frame; inflation and deflation of the telescopic air bag are controlled through the air pump, accurate up-and-down movement of the hair stimulation microneedle is achieved, the problem of uneven force caused by manual operation is avoided, the risk of scalp trauma and hair follicle injury is remarkably reduced, and the safety and effectiveness of treatment are improved; due to the design of a positioning rod and a reset spring, it is ensured that the lifting frame can be rapidly separated from the scalp without external force, damage caused by long-time compression is avoided, and the use risk of the device is reduced.

This invention discloses a method for optimizing the UWB-enhanced positioning map of a vehicle inspecting narrow alleyways. The method includes: hovering the UWB above the initial position of the inspection vehicle and collecting its state vector; obtaining the predicted pose of the inspection vehicle; registering the current environment of the inspection vehicle with historical laser point clouds and updating the vehicle's state vector; hovering the UWB above the mapping point and calculating the distance between the UWB and the inspection vehicle; constructing the comprehensive UWB positioning residual for the current mapping point and the corresponding optimization objective function; and based on the current position of the inspection vehicle, finding a better mapping point and switching the UWB mapping point position until the inspection vehicle completes the inspection in the alleyway, thus optimizing the distribution of mapping points in the alleyway. This method meets the accurate positioning requirements of vehicle inspection in narrow alleyways and can reduce UWB deployment and maintenance costs.

The utility model provides a tungsten-molybdenum metal smelting device which comprises a smelting furnace, a smelting cover is installed at the top of the smelting furnace, an exhaust port is formed in the top of the smelting cover, an anti-blocking exhaust mechanism is arranged at the top of the smelting furnace and comprises an assembly frame, a two-way screw is installed between the two ends in a cavity of the assembly frame, and the two-way screw is connected with the two-way screw. The two ends of the outer side of the two-way screw rod are both sleeved with displacement sliding blocks, connecting rods are installed on one sides of the two displacement sliding blocks, mounting rods are installed on the tops of the two displacement sliding blocks, and the exhaust mechanism can prevent the situation that an exhaust pipe of the device is blocked in long-time use, so that follow-up cigarette ash of the device cannot be discharged in time; the cigarette ash is accumulated in the device, the failure rate of the device is increased, the maintenance cost is increased, meanwhile, potential safety hazards possibly caused by cigarette ash accumulation are avoided, an exhaust pipe of the exhaust mechanism is formed in an assembled mode, and a user can conveniently clean the cigarette ash on the inner wall.

The invention belongs to the technical field of seawater fuel cell power generation, and particularly relates to a water circulation fuel cell power system based on seawater hydrogen production and a ship. Comprising a seawater pretreatment unit used for receiving seawater and removing impurities in the seawater; the fuel supply and mixing unit is connected with the seawater pretreatment unit and is used for mixing NaBH4 and seawater to form hydrogen fuel; the hydrogen fuel cell unit is connected with the fuel supplying and mixing unit and is used for generating hydrogen through hydrolysis reaction, converting the hydrogen into direct current and generating circulating water; the circulating unit is respectively connected with the hydrogen fuel cell unit and the fuel supplying and mixing unit and is used for feeding circulating water into the fuel supplying and mixing unit; and the power unit is connected with the hydrogen fuel cell unit and used for providing power for the ship. The seawater directly participates in the hydrolysis reaction of the sodium borohydride to start the system, and the water generated by the fuel cell is recycled, so that a'water-hydrogen-electricity 'closed loop is realized, and the energy density and the space utilization rate of the ship are improved.

The utility model relates to the technical field of aeration equipment, and discloses a tubular aeration device which comprises a main pipeline, the rear end of the main pipeline is communicated and connected with a connecting pipe, the left side and the right side of the main pipeline are communicated and connected with branch pipes, and the tops of the branch pipes are communicated and connected with air outlet pipes. The outer sides of the top ends of the multiple air outlet pipes are fixedly connected with fixing discs, and the tops of the multiple fixing discs are in threaded connection with protection covers. Through the arrangement of the air outlet pipe, the groove and the bearing, the problems that energy consumption is increased, material aging is possibly accelerated, and the service life is shortened can be solved, the fixing ring is fixedly connected with the bearing inner ring, the turbine blades rotate to drive the fixing ring, and then the bearing inner ring rotates relative to the outer ring in the groove; therefore, the overall mixing effect in the tank is effectively improved, the biochemical reaction efficiency is improved, the shutdown maintenance requirement caused by blockage is reduced, and the manual cleaning frequency is reduced.