426results about How to "Low maintenance" patented technology

The invention discloses an equipment fault intelligent question-answering method and system based on knowledge graph enhancement. The method comprises the following steps: constructing a knowledge graph of a professional field; developing a natural language processing module; designing an enhanced generation model; designing an interactive question and answer interface; the system comprises a user interaction layer, a language understanding processing layer, a knowledge graph query reasoning layer, a question and answer generation layer and a data storage management layer. Through the natural language processing technology, the system can quickly understand the query intention of a user, and the manual information input and interpretation time in traditional fault diagnosis is shortened, so that the overall fault response speed is increased; the large language model has deep learning and generalization capabilities, various complex and unknown fault conditions can be processed, accurate diagnosis and operation suggestions are provided, and the potential capability of the system for processing new fault types is enhanced.

The invention discloses a life prediction method, device and system for a chain transmission system oriented to multi-component coupling, and the method comprises the steps: carrying out the topological structure decomposition of multiple components of the chain transmission system, and extracting the fault relation between the components of the system through combining historical fault data and expert knowledge; preprocessing the fault data to obtain a structured fault feature matrix; establishing a fault propagation network of the chain transmission system by using the cloud model symbol directed graph, and constructing a modularized fault propagation path reasoning model based on the functional relationship and working condition change of system components; dynamic simulation and real-time analysis are carried out on fault propagation of the system through compatible pathway search and qualitative and quantitative conversion of a cloud model; the random uncertainty and the cognitive uncertainty are quantified in a unified mode, and a regression model is adopted to conduct modeling on the degradation trend of the chain transmission system; and performing model parameter optimization, performing residual life prediction of the chain transmission system in combination with a first arrival time method, and giving out the confidence coefficient of life prediction through confidence interval analysis.

The invention relates to the technical field of non-destructive testing, and particularly discloses an aero-engine blade non-destructive flaw detection method for a miniature unmanned aerial vehicle, which comprises the following steps: acquiring stress data of a blade in a use process in real time by using an MEMS sensor, analyzing the data, and identifying a stress concentration area; carrying out real-time monitoring on crack data of the stress concentration area, extracting crack propagation fluctuation characteristics by utilizing a wavelet transform algorithm, and calculating a crack propagation fluctuation index; fatigue strength data of the material is monitored, fatigue failure characteristics are extracted, and a fatigue failure index is generated through a support vector machine algorithm; comprehensively analyzing the crack propagation fluctuation index and the fatigue failure index, and judging whether the blade is in a healthy state or not; and finally, based on the blade health state, determining whether to carry out further detection or maintenance.

The invention relates to the technical field of photovoltaic power station management, in particular to an intelligent management platform and method for ultra-high altitude photovoltaic equipment. The platform integrates a plurality of subsystems of data acquisition, big data analysis, intelligent IV diagnosis, intelligent operation and maintenance and the like, and aims to realize efficient and intelligent management of photovoltaic power station equipment. According to the invention, efficient and accurate operation and maintenance management of the high-altitude mountain photovoltaic power station is realized through intelligent and digital means.

The invention provides a track direction and height detection method and a track detection device.The track direction and height detection method comprises the steps of data acquisition, device track acquisition, compensation value acquisition, real track acquisition and track direction and height data acquisition, angular velocity data is acquired through a gyroscope, angle data is acquired through an inclinometer, and the angular velocity data is acquired through an angle sensor; the contour data of the two steel rails are collected through the line laser sensor, and the mileage data are collected through the mileage detector, so that the three-dimensional track coordinates of the track detection device can be obtained based on the angular velocity data, the angle data and the mileage data; then, based on the high-precision line laser contour data, obtaining a feature point coordinate at a specified position on the inner side of the steel rail as a rail direction compensation value, and compensating a three-dimensional track coordinate of the device by using the feature point coordinate, so as to obtain a real track coordinate at the specified position on the inner side of the steel rail along the x direction and the top surface of the steel rail along the z direction; and accurate rail direction and height data can be calculated.

The invention belongs to the field of ocean engineering, and discloses a modularized movable energy storage power supply platform for ocean offshore power utilization facilities and a use method of the modularized movable energy storage power supply platform. Comprising a modularized energy storage floating body, a flow guide module, a spherical hinge connector, a mechanical arm, a connecting rod and a tugboat. Clean energy obtained from an offshore wind driven generator and a photovoltaic platform is used for charging and is towed to an offshore facility through a tugboat for power supply. The platform adopts a modular design, connection and disassembly of modules are realized through a combined design of a spherical hinge connector and a mechanical arm, floating bodies are flexibly increased and decreased according to power demands of different facilities, and efficient energy storage and stable power supply are realized. The modular design enables the platform to have flexibility and expandability, and can meet the power supply requirements of ocean offshore facilities of various scales and types. The platform not only reduces the high cost of submarine cable laying, but also improves the environmental protection property of power supply, reduces the dependence on traditional energy such as diesel power generation, and promotes the application and sustainable development of clean energy.

The invention relates to the technical field of state real-time pre-judgment of a grinding roller of a coal mill, and provides a bowl type coal mill grinding roller state pre-judgment method and system, and the method comprises the steps: obtaining key factors affecting the motor current of a coal mill; establishing a coal mill current mathematical model based on each key factor; the ideal state current value of the coal mill is obtained through regression calculation through the mathematical model of the current of the coal mill; calculating a grinding roller performance factor based on the ideal state current value of the coal mill; according to the coal making quantity factor of the bowl type coal mill, obtaining a milling roller coal making quantity factor of the bowl type coal mill; obtaining a grinding roller production time factor of the bowl type coal mill according to the grinding roller production time factor of the bowl type coal mill; and according to the grinding roller performance factor, the grinding roller coal production quantity factor and the grinding roller production time factor, grinding roller state value data reflecting the grinding roller state of the bowl type coal mill is obtained through calculation. The method can realize real-time pre-judgment of the state of the grinding roller of the coal mill, and is suitable for overhauling and maintaining the grinding roller equipment of the bowl-type coal mill.

The invention discloses a live binding tool, and relates to the technical field of power maintenance, the live binding tool comprises an insulating operating rod, a connecting column, a binding unit, a locking unit and a binding plate, the connecting column is installed at one end of the insulating operating rod and is used for controlling the binding unit and the locking unit; the binding unit is installed on a binding plate and used for fixing the binding plate to a porcelain bottle. And the locking unit is mounted on the binding plate and is used for fixing the wire on the porcelain bottle. Binding operation can be carried out under the condition that a power source is not cut off, the situations that power supply continuity is affected, inconvenience is brought to a user, and economic losses are caused are avoided, and the operation efficiency is greatly improved.

The invention discloses an impact type rotating wheel hollow water bucket structure and a manufacturing method thereof, and relates to the technical field of hydroelectric power generation, in particular to the manufacturing method of the impact type rotating wheel hollow water bucket structure, which comprises the following steps: S1, preparing an impact type rotating wheel hub and a water bucket root solid area through forging, milling, polishing and other process means; s2, calculating a water bucket hollow part model through the working stress of the rotating wheel; and S3, the prepared rotating wheel hub is clamped to a positioner, and according to the model calculated in the above steps, the additive manufacturing of the rotating wheel hollow water bucket is achieved by continuously and cooperatively adjusting the spatial position of the rotating wheel and the posture of a welding gun. The invention has the advantages of reducing the weight, improving the stability, reducing the inertia, prolonging the service life, saving the cost, promoting the sustainable development, optimizing the structural design, improving the performance, improving the efficiency, reducing the energy consumption, being convenient to manufacture and maintain and enhancing the adaptability.

The utility model discloses an intelligent garage thrust car stopping mechanism, which belongs to the technical field of intelligent garage equipment and comprises a frame body, a turning cover is movably mounted on one side of the top of the frame body, a car stopping roller is rotatably mounted at the bottom of the turning cover, and a linear gear reducer is fixedly mounted in an inner cavity of the frame body. A motor push rod is installed on the linear gear reducer in a matched mode, a transmission assembly is arranged between the turning cover and the motor push rod, one end of the motor push rod is used for turning the roller through the transmission assembly, and an auxiliary supporting assembly is installed in the inner cavity of the frame body and located on one side of the linear gear reducer. By simplifying the structure and optimizing space utilization and debugging and maintenance modes, the overall performance and reliability of equipment are improved, the requirements of practical application are met, the design has remarkable advantages in the aspects of simplifying operation and reducing cost and maintenance difficulty, and an efficient and reliable car arrester solution is provided for the market.

The invention discloses an automatic detection method for three-dimensional information of a segment steel mold. The automatic detection method comprises the following steps: S1, constructing a detection device and a system; s2, establishing a movable axis coordinate system Q; S3, calibrating a coordinate system relation; s4, confirming a coordinate system transformation relation between the structured light 3D camera and the tracker; s5, the optical tracker identifies and captures the position information of the self-luminous tracker; s6, a teaching detection step: enabling the structured light 3D camera to collect 3D point cloud information of the detection area; s7, a system automatic detection step; and S8, collecting the point cloud data of all the detection areas, and converting the point cloud data into an optical tracker coordinate system to obtain global point cloud data of the segment steel mold. And according to the global point cloud data of the segment steel mold, analyzing vertex position information, line segment position information and plane position information of the detection area, and according to an analysis result, outputting a detection report of the segment steel mold. Three-dimensional information of the inner cavity of the large-size steel mold is automatically collected and detected, and field installation and maintenance are facilitated.

The invention discloses a purified water pretreatment system, and belongs to the technical field of purified water treatment.The purified water pretreatment system comprises a source water tank, an electrolytic descaling device, a particle filter, an ultraviolet sterilizer, an RO filter, deionizing equipment and a storage tank, the source water tank supplies a water source through a water supply end, and the electrolytic descaling device is communicated with the source water tank through cooperation of a pipeline and a first pump body; water in the source water tank is conveyed into the electrolytic descaling device to be subjected to electrolytic descaling through starting of the first pump body, the particle filter is communicated with the discharge end of the electrolytic descaling device through a pipeline and used for filtering particles in the water subjected to electrolytic descaling, and the ultraviolet sterilizer is communicated with the discharge end of the particle filter through a pipeline and used for sterilizing particles in the water subjected to electrolytic descaling. The electrolytic descaling device is adopted to replace traditional filtering modes such as activated carbon and a softener, regeneration is not needed, dosing and ultrafiltration are not needed, the maintenance and operation cost is reduced, the risk of poor pollution is reduced, and the water quality reaches the WFI standard.

The invention discloses a preparation method of foam composite self-floating sponge and photo-thermal interface evaporation application of the foam composite self-floating sponge. In the foaming process of preparing the porous sponge, the step of adding hydrophobic foam particles in situ is introduced, and the composite material which can rapidly absorb and guide water and has the self-floating characteristic is prepared through a one-step method. The composite material disclosed by the invention can simultaneously meet the dual functions of water absorption, water diversion and self-floating. When the composite material is used as a substrate material of a photo-thermal interface evaporation system, a spontaneous, continuous and stable outdoor evaporation process can be ensured. Under the condition of simulating 1 solar radiation (1000 W / m < 2 >), the technology realizes the water evaporation rate up to 1.86 kg.m <-2 >. H <-1 >; and under natural sunlight irradiation (about 435 W / m < 2 >), the average sewage evaporation rate reaches 1.70 kg.m <-2 >. H <-1 >, and the daily average sewage evaporation capacity is 12.0-14.0 kg.m <-2 >.

The utility model discloses a drawing machine with rollers convenient to maintain, and relates to the technical field of rollers. The device comprises a plurality of supporting legs and a bottom plate fixedly connected to the tops of the supporting legs, and each supporting leg is provided with a mounting mechanism and an adjusting mechanism. Through the arrangement of the mounting mechanism, before use, limiting bolts on a concave block and a convex rod need to be pulled out, the concave block and the convex rod are disconnected, then an air pump is started, an air cylinder pushes the convex rod to move upwards, blocking of the convex rod to a second supporting plate during dismounting is relieved, then a handle is pulled, a disc drives the limiting rod to compress a spring, and the second supporting plate is dismounted. When the roller is dismounted, the limiting of the second supporting plate is relieved, at the moment, the second supporting plate can slide outwards, two second sliding blocks on the second supporting plate are separated from two first rotating shafts, finally, first gears on the two first rotating shafts are dismounted, and the roller can be dismounted, so that the mounting and dismounting efficiency of the device is improved, the tedious operation process is reduced, and the practicability is high. And the maintenance cost is reduced.

The automatic cleaning and cooling device is arranged in a fan blade area of an indirect cooling tower and comprises a bottom plate and a top plate, the bottom plate and the top plate are arranged in the lower end space and the upper end space of the fan blade area correspondingly, and a spraying mechanism and a driving mechanism are arranged between the bottom plate and the top plate; the two heat exchange faces of the fan blade area are sprayed, washed and cooled through the spraying mechanism, and the spraying mechanism is driven by the lifting mechanism to move up and down for spraying. The spraying mechanism is driven by the driving mechanism to perform automatic lifting cleaning, so that dust and impurities on the heat exchange surface are flushed, the fan blade area can be cooled, the vacuum degree of the steam turbine is kept within the required range for a long time, the working efficiency of the indirect cooling tower is improved, operation is convenient, the failure rate is low, and the practicability is high. And manual cleaning operation is not needed, time and labor are saved, the actual cleaning efficiency is improved, the risk of manual high-altitude operation is avoided, and long-term safe and stable production of enterprises is facilitated.

The utility model provides a workshop steel structure glue sealing system which is used for sealing gaps of a 90-degree right-angle steel double-spliced structure. The gaps comprise the first gap of the double-splicing wide edge, the second gap of the double-splicing narrow edge, the third gap of the double-splicing top and the fourth gap of the double-splicing bottom. Comprising a first edge sealing strip, a second edge sealing strip, a third edge sealing strip and a glue sealing device, the first edge sealing strip is used for sealing the first gap, the second edge sealing strip is used for sealing the second gap, and the third edge sealing strip is used for sealing the third gap and the fourth gap. The glue sealing device comprises a glue sealing plate, a glue conveying pipe and a pressurizing machine, a glue conveying hole is formed in the glue sealing plate, the glue conveying pipe is connected with the glue conveying hole and the pressurizing machine, and the glue sealing plate is used for sealing the fourth gap during glue sealing. According to the utility model, crevice corrosion of the double-spliced structure can be effectively avoided, the service life of an on-site steel structure is prolonged, and the maintenance cost is saved.

The invention provides an NC30Fe high-chromium nickel-based alloy pierced billet as well as a preparation method and application of the NC30Fe high-chromium nickel-based alloy pierced billet. The preparation method comprises the following steps: firstly, heating an NC30Fe high-chromium nickel-based alloy tube blank to a specific charging temperature, and perforating by utilizing a hot cross rolling perforation process; in the punching process, it is ensured that the dimensional tolerance and eccentricity of a pierced billet meet the requirements by strictly controlling the roller distance, the top temperature and the extension coefficient; and then, quenching treatment is carried out on the pierced billet subjected to perforation, so that the grain size is controlled to be within the range of grade 3 to grade 7, and the high-temperature strength and creep resistance of the material are improved. According to the preparation method disclosed by the invention, through introduction of a hot cross piercing process, the problems of more surface defects, large eccentricity and difficulty in grain control caused by a traditional hot extrusion process are solved, the yield is increased to 93% or above, and the surface smoothness and the dimensional precision are remarkably improved. The pierced billet is suitable for preparation of high-temperature corrosion-resistant and high-precision nickel-based alloy pipes in the fields of petroleum, chemical engineering, aerospace and the like, and has high application value.

The present invention provides a water treatment method and a water treatment system for purification of methanol-to-olefin product gas, which can effectively remove particulate matter and oily wax-like organic matter in the quenched water turbidity generated in the product gas purification process. The water treatment method comprises: sending the product gas into a quenching tower for washing and cooling with quenching water to obtain quenched product gas and quenched water turbidity; sending the quenched product gas into a water washing tower for washing and cooling again to obtain washed product gas and washed water turbidity; circulating part of the washed water turbidity to the water washing tower, sending part of the washed water turbidity to the quenching tower; sending the quenched water turbidity to a microchannel separator for treatment to remove particulate matter and part of organic matter in the quenched water turbidity to obtain quenched water clear liquid; sending part of the quenched water clear liquid to the quenching tower, sending part of the quenched water clear liquid to the water washing tower; sending part of the quenched water clear liquid and part of the washed water turbidity to a sewage stripping tower for treatment.

The invention discloses a digital laying construction method for subway prefabricated rubber spring floating slabs, and relates to the technical field of rail transit. Comprising the following steps: S1, construction preparation; s2, binding and pouring steel bars of a base; s3, measuring the flatness of the substrate; s4, digitally measuring and positioning a floating slab line; s5, roughly paving the floating slabs; s6, primarily measuring the jacking amount of the floating slab vibration isolator; s7, the floating slab is finely adjusted; S8, an adjusting base plate is installed, and limiting boss steel bars are bound and poured; and S9, steel rail fastener installation and rail fine adjustment. The digital laying technology is adopted for controlling all links of laying, the problems existing in floating slab track bed construction are effectively solved, accurate positioning of the floating slabs is achieved, the track precision is improved, the situation that due to floating slab laying precision deviation, a large amount of rework is caused, and the smoothness index cannot meet the requirement in the operation period is avoided, and the construction efficiency is improved. The construction period and cost are saved for construction, the maintenance cost within the guarantee period is reduced, and the operation and maintenance cost is reduced.

The invention relates to the technical field of prefabricated formworks, in particular to an arc-shaped equipment foundation prefabricated formwork equally-divided assembling and reinforcing method which comprises the steps that firstly, lofting is conducted on plywood according to the foundation diameter, a corresponding circular formwork outline is cut out, and a bottom fixing plate and a top end fixing plate are manufactured; finally, the base is divided into an even number of bottom fixing plates and top end fixing plates according to the diameter of the base; equilong battens are cut according to the height of the foundation to form supporting assemblies, and the supporting assemblies are evenly distributed between the bottom fixing plate and the top end fixing plate and fixed through nails, so that a prefabricated circular-arc-shaped equipment foundation framework is formed; the corresponding circular-arc-shaped equipment foundation framework is assembled on the bottom plate, and a complete circular-arc-shaped equipment foundation prefabricated formwork is formed; flattening an iron sheet higher than the top end fixing plate on the fixing cambered surface; and after the internal iron sheet is fixed, a circle is defined on the fastening groove by using a reinforcing steel bar, and the joint is fastened by using an opposite-drawing lead screw and then is welded and reinforced at the joint.

The utility model relates to the technical field of assembly clamps, in particular to an assembly clamp which comprises a bottom plate, a stand column is installed on the top end wall of the bottom plate, a top plate is installed at the top end of the stand column, a top oil cylinder is installed at the top end of the top plate, and a top pressing head is installed on the lower end wall, close to the top oil cylinder, of the top plate. A positioning disc is installed in the middle of the upper end of the bottom plate, and a shell material is installed at the upper end of the positioning disc. According to the utility model, the directional screw rotates, the directional screw moves along the end wall of the directional seat in a transmission manner, and the directional screw is used for being in one-point contact with the end wall of a shell material and is matched with the one-side ejection head driven by the oil cylinder on one side and the two-side ejection head driven by the oil cylinders on two sides to position the other two points on the end wall of the shell material, so that three-point positioning is formed on the shell material; according to the shell material positioning device, the shell material can be quickly and stably positioned under the condition that the fewest positioning heads and the fewest oil cylinders are used, so that follow-up quick press-fitting machining is facilitated, and meanwhile the manufacturing cost and the later maintenance cost are lower.

The present invention discloses an integrated water-cooled variable ceramic vacuum capacitor, comprising: an outer shell, a mounting base, a guide sleeve, an adjustment component, a double-layer bellows installed in the outer shell, and an electrode, wherein the mounting base is fixedly mounted on the top of the outer shell, the guide sleeve is fixedly connected to the mounting base, and a water circulation channel is formed between the guide sleeve and the mounting base; the adjustment component comprises a pull rod, which is slidably mounted in the guide sleeve and fixedly connected to the moving electrode of the electrode; the double-layer bellows is sleeved outside the guide sleeve, and the double-layer bellows comprises an inner layer bellows and an outer layer bellows, one end of the inner layer bellows and the outer layer bellows are both fixedly connected to the mounting base, and the other end is both fixedly connected to the moving electrode. The present invention fundamentally changes the manufacturing process of the product by adopting a double-layer bellows structure, greatly saves production costs, and improves production efficiency.

The utility model discloses a multi-core ultra-weak fiber bragg grating carbon fiber reinforcing rib and a fiber bragg grating sensing system, the reinforcing rib comprises a plurality of temperature-resistant optical fibers inscribed with ultra-weak fiber bragg grating sensing units, and the plurality of temperature-resistant optical fibers are axially distributed at equal intervals around the central axis of the reinforcing rib; the plurality of temperature-resistant optical fibers are wrapped and formed by carbon fiber bodies; the end part of the temperature-resistant optical fiber is provided with a sleeve which is partially led out, one part of the sleeve is led out together with the temperature-resistant optical fiber, and the other part of the sleeve is embedded in the reinforcing rib and is cured and formed. And the plurality of temperature-resistant optical fibers and the plurality of bundles of carbon fibers pre-impregnated with the phenolic resin are molded through hot pultrusion. The ultra-weak fiber bragg grating sensing system comprises ultra-weak fiber bragg grating carbon fiber reinforcing ribs implanted into a measured object, and the ultra-weak fiber bragg grating sensing system is connected with an ultra-weak fiber bragg grating analyzer and used for monitoring temperature, strain or spatial form. The reinforcing rib integrates the excellent performance of the carbon fiber and has the advantages of being high in strength, good in repeatability, easy to fuse with a large structure and the like.

The utility model relates to the technical field of weeding, in particular to municipal road weeding equipment which comprises a vehicle body, a transmission groove is formed in the vehicle body, a rotating rod is rotatably connected to the interior of the transmission groove, two first bevel gears are fixedly connected to the exterior of the rotating rod, and a first motor is fixedly connected to the outer side of the vehicle body. An output shaft of the first motor extends into the transmission groove and is fixedly connected with a second bevel gear, and teeth are arranged at the position of one fourth of the second bevel gear. The large-area weeding equipment has the beneficial effects that the working efficiency can be obviously improved, the weeding operation can be completed more quickly, the interference time of road maintenance work on traffic is shorter, a road can be recovered to a normal use state more quickly, the improvement of the efficiency directly leads to the reduction of the operation cost, and the same workload can be completed with less time; labor cost and mechanical use cost can be saved, maintenance and replacement cost of equipment can be reduced for a long time, and compared with a traditional device, operation quality and use efficiency are greatly improved.

The present invention relates to the field of umbrella-type wind power technology, and discloses a flying saucer ladder-type wind power generation system for realizing continuous power generation at medium and high altitudes, wherein the power generation system comprises a helium balloon, two kite flying saucer groups, parachute ropes, and power generation facilities; the helium balloon is used to provide the height for the two kite flying saucer groups to perform wind power generation; the helium balloon is connected to the power generation facilities through parachute ropes; the two kite flying saucer groups are fixedly connected to the parachute ropes; the two kite flying saucer groups are respectively located on both sides of the helium balloon; each kite flying saucer group comprises at least one working parachute, wherein the working parachute in one kite flying saucer group is opened in the manner of shutters, and the working parachute in the other kite flying saucer group is closed in the manner of shutters to drive the parachute ropes to move, thereby realizing continuous power generation of the power generation facilities. The power generation system of the present invention can realize a continuous and stable power generation process.

The invention belongs to the technical field of silicon steel smelting, and particularly relates to a method for producing silicon steel based on a preparation unit, which comprises the following steps of: (1) centering an outlet section, pressing a front coil of strip tail, positioning the strip tail in a double-cut shear, centering an inlet section, pressing a rear coil of strip head, positioning the strip head in the double-cut shear, shearing by the double-cut shear, moving a welding machine pressing plate, and splicing, performing hybrid welding; and (2) after the previous coil is unloaded, the belt wrapper runs to a working position, the leading tape is wound on the coiling machine, and two programs, namely an automatic mode and a manual mode, are additionally arranged in EPC (Electronic Program Control) input. The default EPC function of each roll of tape head adopts an automatic input mode, the EPC is automatically input, the manual input function needs to be started after a manual mode is manually clicked in an operation picture, and the EPC is manually input; and (3) the width specification of the base material is 1000-1300mm, and a leading tape with the width of 1000mm is adopted. The welding process is optimized, the condition for inputting the EPC centering function of the coiling machine is designed, and the production efficiency of a unit and the yield of a rolling mill are improved.

The invention discloses a casting method for improving appearance surface quality of metal lithium, which comprises a flow guide device, a casting pipe mechanism, a mold, a lithium liquid conveying pipeline and an oil coating mechanism, the flow guide device is placed on the mold, and the flow guide device comprises a flow guide sleeve, a flow guide rod, four flow dividers, four inner connecting plates, four outer connecting plates and a fixing plate; the casting pipe mechanism comprises a casting pipe inlet and a casting pipe outlet; the liquid metal lithium casting device is reasonable in design and convenient to use, liquid metal lithium casting is achieved, liquid lithium flows out of a mold base plate in the casting process, the downward flow speed of lithium liquid is reduced through the internal structure of the flow guide device, and small lithium beads splashed when the lithium liquid impacts the base plate are blocked by the flow guide sleeve; the purpose of reducing the splashing speed and range of the lithium liquid is achieved, scars are avoided, the casting quality of a lithium ingot is improved, bubbles are avoided, and meanwhile the problem that other flow guide tools cannot be taken out due to the fact that the lithium liquid is rapidly solidified and embedded in metal lithium is solved.

The invention discloses a metallized film capacitor health state assessment method and system based on audible noise signal analysis, a medium and equipment, and the method comprises the steps: building a discharge noise monitoring experiment loop; the metalized film capacitors in different health states are detached and connected to the discharge noise monitoring experiment loop; an alternating current and direct current superposition voltage experiment is carried out in the discharge noise monitoring experiment loop, the temperature of the metallized film capacitor in different health states is kept at 25 DEG C constantly in the experiment process, after pressurization is completed, noise waveforms are collected for 10 s to obtain noise waveform data, and voltage reduction and experiment stopping are carried out on the metallized film capacitor; according to the noise waveform data, respectively calculating sound pressure level levels of the metallized film capacitor in different health states, and simultaneously carrying out FFT analysis to obtain frequency domain characteristics of the metallized film capacitor; and acquiring a reference value of the sound pressure level at the initial operation moment, and judging the health state of the metallized film capacitor according to the sound pressure level and the frequency domain characteristics to obtain health or failure classification.

The invention belongs to solid-liquid separation drying equipment, and relates to a drum-type filtering, washing and drying machine which is named as a drum-type three-in-one machine (see figure 1) for short and comprises a filter screen detachably mounted in a filter screen supporting drum of a drum body, and the drum body is formed by welding the filter screen supporting drum, a liquid collecting drum, a left side plate of the drum body and a right side plate of the drum body. The plunger valve and the washing liquid check valve are installed on the filter cartridge left end cover, the filter pressing gas check valve and the feeding check valve are installed on the filter cartridge right end cover, the screw is installed in the filter cartridge through the filter cartridge left end cover inner bearing and the filter cartridge right end cover inner bearing, and the shaft end of the screw is connected with the speed reducer through the coupler and driven by the motor. The liquid discharge pipe is welded and communicated with the filtrate collecting barrel of the barrel body, the plunger valve serves as a discharging outlet and is controlled by the air cylinder actuator to be opened and closed, the shaft seal is sealed through a pneumatic ring, the parts form a barrel type three-in-one structure which is installed on a rack, and the barrel type three-in-one structure is suitable for solid-liquid separation and drying in the pharmaceutical and chemical industry.

The utility model relates to a blast furnace main iron runner cover which comprises a cover body composed of a shell and a refractory lining, the cover body is arched, a plurality of air holes are formed in the cover body, flaring sections are arranged at the two ends of the cover body, an outer retaining wall and an inner retaining wall are arranged at the two ends in the cover body along the inner wall respectively, the outer retaining wall and the inner retaining wall are arranged at intervals, and the outer retaining wall and the inner retaining wall are the same in structure. Comprising a metal wall plate, the metal wall plate is fixedly connected with a shell, a refractory material layer covers the metal wall plate, the refractory material layer and a refractory material lining form an integrated structure, and an arch-shaped channel is formed in the middle of an outer retaining wall and the middle of an inner retaining wall. The trumpet-shaped flaring can enlarge the coverage area and the shielding area, prevent air convection interference and dust escape, prevent particles entering the main iron runner cover from scattering, and improve the slag iron splashing and sucking effect. The outer retaining wall and the inner retaining wall can forcibly control the spraying speed of molten slag and iron, and kinetic energy and impact force are reduced.