677results about How to "Shorten maintenance cycle" patented technology

The invention discloses a draught fan detection and diagnosis system, which is used for detection and fault diagnosis of a wind generating set; the detection and diagnosis system comprises a data acquisition module, a data transmission module, a data storage module, a data analysis and fault diagnosis module and a control and interaction module; the data analysis and fault diagnosis module is communicated with the data storage module and is used for analyzing variable data parameters and diagnosing the cause of the fault of a draught fan, the control and interaction module can realize data sharing with a control system of the draught fan or a central monitoring system in a wind field. The draught fan detection and diagnosis system can automatically diagnose the causes of common faults of the draught fan, shorten the maintenance cycle and reduce the maintenance cost.

The invention relates to an online monitoring and condition maintenance management system, which is a layered and distributed data management and computer system, faces to a plurality of substation high-voltage equipment and adopts a multi-server level-to-level management system. The online monitoring and condition maintenance management system comprises an online monitoring equipment layer, a substation data network layer and a remote data center. By constructing and applying the management system, the online monitoring system is promoted to be transitioned to an all-round, networked, intelligent and comprehensive condition monitoring, diagnosis and service management system from the traditional isolated and static experimental system. The system provides a powerful technical supporting platform for overcoming periodic maintenance blindness, reducing maintenance times, reducing maintenance expenses, delaying maintenance cycle to the utmost extent, truly realizing condition maintenance for power system operation and management departments and further improving the operation rate of the equipment and the safety of power grids.

GIS application system includes GIS platform, plug in modules and system interface. The said system interface includes platform interface and interface for plug in modules. Plug in modules implements specific service logic related tasks. Realized by the platform, platform interface is called and utilized by plug in modules. Realized by modules, interface for plug in modules is called and utilized by GIS platform. Through technique of GIS platform, the invention builds multiple self-defined interfaces in program to make plug in modules able to access each resource in program. Meanwhile, GIS platform is able to carry out specific function through calling plug in modules. After interface of plug in module is opened to public, any company and personal can develop own plug in modules to solve inconvenient operations or add new functions so as to increase expandability of software and prolong life cycle of software system.

The invention belongs to the field of transformer fault diagnosis, and particularly relates to a transformer fault diagnosis system and method based on digital twinning, the transformer fault diagnosis system is composed of a physical system module, a digital twinning module and a fault diagnosis module, and the method specifically comprises the following steps: creating a three-dimensional model of the transformer by using the physical system module and acquiring transformer operation state data acquired by a sensor; using the digital twinning module to create a transformer digital twinning model, and generating analog data and calibration of the digital twinning model; and performing fault diagnosis of the transformer by using the fault diagnosis module. According to the invention, the physical entity of the transformer is combined with the virtual model, the digital twin model is corrected according to the state monitoring data obtained by the sensor and the simulation data of the twin model, the characteristic parameters are extracted, and the fault type is diagnosed by using the BP neural network algorithm. The possible reasons of the fault are analyzed, the maintenance cost and period of the transformer are reduced, the fault diagnosis efficiency is improved, and the transformer can operate safely and reliably.

The invention relates to a fracture-cave carbonate reservoir physical model and a displacement simulation experimental device and system. The fracture-cave carbonate reservoir physical model comprises caves, fractures, a base plate and a filler, wherein the caves and the fractures are arranged on the base plate and connected into a whole; the filler is used for simulating the cave filling conditions; and the fracture-cave carbonate reservoir physical model is provided with a filler opening, a withdrawal opening and a bottom water opening. The fracture-cave reservoir visual displacement experimental device is more approximate to an actual reservoir model, particularly for cave and fracture-cave reservoirs, can simulate the discrete distribution feature of the fractures and caves, and is more practical for simulation of filled caves. In addition, owing to the detachability of the fracture-cave model, the operability and the flexibility of experiments are enhanced; the model setting, adjusting and maintaining periods are shortened; the model is simple in manufacture process and can be repeatedly used; and therefore, the experiment cost is greatly lowered.

The invention discloses an intelligent on-line liquid level monitoring and early warning system. The intelligent on-line liquid level monitoring and early warning system is composed of a data center and at least one liquid level monitoring and early warning subsystem, and is characterized in that the liquid level monitoring and early warning subsystem comprises a liquid level monitoring point, a liquid level monitoring host and a monitoring repeater; the liquid level monitoring host is used for carrying out continuous monitoring on the liquid level monitoring point, generating monitoring data and transmitting the monitoring data to the monitoring repeater according to a changeable transmission time interval, and the monitoring repeater is used for receiving the monitoring data and transmitting the monitoring data to the data center according to the changeable transmission time interval; the data center is used for processing the received monitoring data to obtain status data and various curves of the liquid level monitoring point and displaying and releasing the status data of the liquid level monitoring point in real time. By means of the intelligent on-line liquid level monitoring and early warning system, on-line liquid level monitoring, short-message warning, waterlogging early warning, short-time forecasting, monitoring data public release and the like can be carried out on points such as a drainage pipeline, a drainage channel, a drainage inspection well, a drainage exit, an urban sunken road, an urban underground parking garage and urban receiving water.

The invention discloses a remote detection and maintenance information exchange method for agricultural machinery and relates to a vehicle information exchange method. A management center establishes an agricultural vehicle database, a maintenance vehicle database and an agricultural maintenance and diagnosis database; the agricultural vehicle database contains the data on current operation state which is made a timing collection by each agricultural vehicle and is uploaded through wireless communication; the maintenance vehicle database contains the current position data which is made a timing collection by each agricultural vehicle and is uploaded through wireless communication. The management center receives the help information uploaded by the broken-down agricultural vehicle, stores the help information into the agricultural vehicle database, and inputs the help information into the agricultural maintenance and diagnosis database for treatment to obtain a solving prompt which is sent to the agricultural vehicle for self-maintenance, or a maintenance vehicle is selected to send maintenance instructions through wireless communication, the maintenance vehicle uses the position data of the vehicle and the agricultural vehicle to calculate a simple navigation map to quickly find out the agricultural vehicle to maintain. The invention solves the problems that the communication of three parties is complex and the maintenance vehicle is difficult to reach the maintenance location.

The invention relates to a laser anti-corrosion and wear-resistant process for the trunnion of movable guide vanes of turbines. The process comprises the following steps: useing liquid penetrant test detection to detect the whole guide vane trunnion so as to determine cracks, air cavities and slag in the erosive wear area; and making balancing weights according to the shape and poise error of the guide vanes; removing the fatigue layer of the erosive wear area of the guide vanes; and carrying out cleaning technology treatment after clearing. A special powder feeding device is used to carry out laser cladding for special alloy materials which have good fusion property, high bonding strength and good anti-corrosion and wear-resistant properties. The specific parameters of the cladding process are as follows: the laser power is 3,200W, the spot diameter is 3.2 mm, the latus spots are used, the scanning speed of numerical control programming is 700 mm / min, the lapping rate is 25%, argon protection is used, and the alloy materials are delivered into the melting bath of laser cladding in an angle of 15 DEG by a special laser powder feeding device in a synchronous powder feeding way. All movable guide vanes to be repaired in the invention do not need sending to the manufacturer for treating, huge transport expenditure is not needed, and the whole repair period can be greatly shortened.

The invention discloses a composite extrusion roller, and a preparation method thereof, and belongs to the field of metal-based composite material. The composite extrusion roller composite wear-resistant pillar nails, a roller shell, and a roller body; the roller body is sleeved by the roller shell; the roller shell is composed of a metal matrix layer and a ceramic reinforced composite layer; the metal matrix layer is arranged to be close to the roller body; the outer periphery of the roller shell is provided with a plurality of honeycomb holes; and each pillar nail is inserted into a corresponding honeycomb hole via interference fit. The preparation method is capable of solving problems of conventional extrusion rollers that wear is easily caused, service life is short, and maintenance cost is high; and possesses following steps: the ceramic reinforced metal matrix extrusion roller shell provided with the honeycomb holes is prepared; and the wear-resistance pillar nails are inserted into the honeycomb holes so as to obtain the novel wear-resistance extrusion roller.

The invention provides a mine-used dust concentration sensor having the automatic cleaning function. The sensor comprises a sensor shell, the sensor shell is provided with an air inlet nozzle and an air outlet, a monitoring dark chamber is formed inside the sensor shell, the monitoring dark chamber comprises a scattering chamber body and a monitoring chamber body, the scattering chamber body is communicated with the air inlet nozzle and the air outlet, a laser device is arranged, the monitoring chamber body is provided with a photosensitive diode and a circulation pipeline, the two ends of the circulation pipeline are communicated with the monitoring chamber body and arranged oppositely, and the circulation pipeline is internally provided with a circulating fan and a dust filter screen; the sensor is characterized in that when dust concentration is detected, the circulating fan continuously sucks air adjacent to the surface of the photosensitive diode into the circulation pipeline for filtration and sends fresh air obtained after filtration back to the surface of the photosensitive diode, so that a clean air film layer is formed, dust is prevented from adhering to the surface of the photosensitive diode in a sucked mode, and thereby the detection sensitivity of the dust concentration sensor is improved.

The invention discloses a battery pack electricity equalization circuit. The battery pack electricity equalization circuit comprises N-1 battery equalization unit circuits, N voltage sampling circuits, an auxiliary power module, a single-chip microcomputer control module and a driver module, wherein the Kth voltage sampling circuit and the (K+1)th voltage sampling circuit acquire a voltage at two ends of a Kth battery and a voltage at two ends of a (K+1)th battery, and transmit the voltages to the single-chip microcomputer control module; the single-chip microcomputer control module outputs a driver signal to the driver module according to the voltages; the driver signal output by the driver module is transmitted to the Kth battery equalization unit circuit; and the Kth battery equalization unit circuit controls the Kth battery to be discharged and the (K+1)th battery to be charged or controls the Kth battery to be charged and the (K+1)th battery to be discharged, so that electricity equalization of the Kth battery and the (K+1)th battery can be achieved, wherein K is greater than or equal to 1 and less than or equal to N-1. According to the equalization circuit and method, the equalization circuit is simple in structure, high in conversion efficiency, low in cost and high in reliability, and can expand the available capacity of a battery pack and prolong the service life of the battery pack.

A method for monitoring aircraft operation status comprising receiving aircraft operation data, identifying an aircraft associated with the aircraft operation data, recording the aircraft operation data to an aircraft database, and determining whether the aircraft operation data complies with rules governing aircraft operation. Upon determining the aircraft operation data complies with the rules governing aircraft operation, the compliance is recorded to the aircraft database. Upon determining the aircraft operation data comprises a non-compliance, a non-compliant aircraft system or component associated with the non-compliance is identified, the non-compliance to the aircraft database is recorded, and an action responsive to the non-compliance is performed.

The hydraulic variable loading system for roller-plate coal mill in power station, cement mill, etc. consists of filter, motor, two-gang pump, high pressure bi-directional filter, pressure speed variator, energy accumulator, two-position four-way solenoid valve, hydraulic cylinder, proportional overflow valve, etc. The motor drives the two-gang pump to provide the hydraulic kinetic energy, and under the control in the central control room via the pressure speed variator, proportional overflow valve and the hydraulic variable loading system, the work pressure is applied to the hydraulic cylinder cavity. The system of the present invention is novel, safe and reliable, and makes the coal mill operate stably at low load.

The invention discloses a vehicle failure and maintenance information management platform which comprises a failure information collecting system, a failure information transmission system, a central database and a case tracking and feedback system. The failure information collecting system is used for collecting failure codes of a failure vehicle. The failure information transmission system is used for transmitting the failure codes of the vehicle, vehicle model information, position information and status information to the central database. The central database is used for analyzing and judging the data information transmitted by the failure information transmission system, quoting a price for the failure vehicle according to a price list of a maintenance shop and sending a price sheet to the owner of the vehicle and the maintenance shop, and the owner of the vehicle selects the corresponding maintenance shop to maintain the failure vehicle. The case tracking and feedback system is used for transmitting the maintenance data of the failure vehicle back to the central data base and updating the obtained corresponding maintenance records to the central database. According to the vehicle failure and maintenance information management platform, the owner of the vehicle does not need to be asked to pay the maintenance cost directly, a large amount of price inquiry time of the owner of the vehicle can be saved, the maintenance period is shortened, and efficiency is higher.

The invention discloses a motor health index evaluation system based on multi-fault feature combination. The system comprises: a data collection module which is used for synchronously obtaining all kinds of operation state data of a motor; a cloud data storage server used for storing various running state data of the motor synchronously acquired by the data acquisition module; a data analysis module used for carrying out signal source analysis to judge various faults according to various running state data of the motor stored in the cloud data storage server; and a health index evaluation module used for adopting a joint diagnosis mode based on an expert system to respectively obtain the fault probability and the fault degree of each type of fault obtained through judgment, and comprehensively scoring each type of fault in combination with the hazard degree of each type of fault to obtain the health state of the motor. By comprehensively evaluating the health state of the motor, the operation and maintenance cost and the maintenance period of the motor are reduced, the economic loss caused by non-planned shutdown is avoided, and the service quality and the service life of key parts are improved.

The invention discloses a method for maintaining a coke dry quenching furnace. The method comprises the following steps of: firstly, carrying out construction preparation; then, building an isolation shed to achieve the safety requirement on simultaneous construction in a plurality of construction areas; sequentially carrying out constructions of applying an interfacial agent, ramming a liner which consists of firm plasticizing materials and anchoring bricks, and treating a working surface of the liner; and finally baking the furnace. The invention has the advantage that by adopting the isolation shed, construction mode on areas required to be maintained are changed from a traditional rotating maintenance mode into a simultaneous maintenance mode on a plurality of areas, thereby shortening the maintenance period, and enhancing the work efficiency; by adopting the liner consisting of the firm plastic materials and the anchoring bricks, the furnace body has the excellent performances ofhigh strength, good structure, strong wear-resisting property, thermal shock resistance and the like, thereby the service life of the furnace body is prolonged.

The invention discloses a precise and efficient adjustment process system for a steam seal clearance of a steam turbine. Example verification of ten-odd domestic steam turbine generator units with different capacities proves that the working period for the link of steam seal clearance adjustment during unit maintenance can be controlled in seven days and is shortened by 5-10 days by comparison with a conventional adjustment method; the adjustment precision is well guaranteed and the economical performance of the whole units can be improved to a larger extent on the premise that safe and stable operation of the units is not affected. By means of the precise and efficient adjustment process system for the steam seal clearance, the maintenance period can be shortened, consumption of manpower and time is reduced, the heat consumption of the unit can be better reduced, the overall economical performance of the units is improved, the operation procedure is simple and convenient, and the system has high practical popularization and economical efficiency.

The invention discloses a suction force controllable unsaturated soil static triaxial apparatus based on internal body variable precision measurement. The static triaxial apparatus comprises a main machine part, a water circulating and pressure-stabilizing thrusting water source part and a data acquisition and processing part, wherein the water circulating and pressure-stabilizing thrusting water source part is mainly composed of two independent waterway parts formed by two thrusting pressure-stabilizing water sources, and the two independent waterway parts comprise a confining pressure control waterway for providing stable pressure for a confining pressure chamber and a monitoring waterway for precision measurement of internal body variables and suction force. The static triaxial apparatus still adopts the axis-translation technology without adopting a ceramic plate used by the traditional unsaturated instrument necessarily, and can realize precision measurement of the unsaturated soil body variables and control of the suction force in a testing process, therefore, a process that the ceramic plate is saturated is removed, the lagging problem of water drainage of the ceramic plate is solved, and the suction force in the unsaturated soil can be accurately controlled; according to the suction controllable unsaturated soil static triaxial apparatus, automatic control and measurement can be realized in the whole process, the requirements for reasonable experiment principle, high measurement precision and technical feasibility can be met, and the testing efficiency can be greatly improved.

The present invention discloses a bidirectional lossless equalization circuit of a series battery pack based on inductive energy storage, wherein, the series battery pack is divided into an upper part and a lower part, the upper half part battery is an upper battery pack, and the lower half part battery is a lower battery pack. Each battery connects an equalization branch circuit, a total equalization branch circuit bestrides and connects a power supply and the earth, and each equalization branch circuit connects a control circuit. The circuit can realize a dynamic equalization during the charge-discharge process of the battery pack, improve a non-equalization phenomenon of the series battery pack, improve an available capacity of the battery pack, reduce a repairing and replacing cycle of the series battery pack, and prolong a service life of the battery pack by controlling the on and off of an upper bridge and a low bridge MOSFET in the equalization branch circuit and the inductive energy storage. Thus, the circuit is suitable for a battery management system of an energy storage device of a hybrid electric vehicle, a pure electric vehicle, or a storage power station.

Efficient fuel combustion catalyst delivery device and method are provided. A fuel combustion catalyst delivery device includes a storage vessel that contains a liquid. The liquid includes one or more catalytic materials. The storage vessel is attached to a nebulizer that can convert the liquid to an aerosol to be delivered into an air intake of a combustion zone. The aerosol can accelerate fuel combustion. The storage vessel and the nebulizer are made from materials suitable to be exposed to the liquid and the aerosol. The storage vessel and the nebulizer are also suitable to be placed in proximity to the combustion zone such as an engine compartment so that the aerosol can be delivered into the air intake of the combustion zone easily and effectively. The surfaces of the delivery device exposed to the liquid or the aerosol may be made of corrosion-resistant or inert materials if the liquid is acidic. The surfaces of the delivery device exposed to the liquid or the aerosol may be also made from materials that produce substantially no contaminants into the liquid. The nebulizer may convert the liquid to an aerosol at a rate between once per second and one hundred times per second. The nebulizer may have holes for passing the liquid where each of the holes has a size not greater than about 10 μm. The delivery device can deliver up to 500 ml or more of liquid as aerosol over 500 hours of operation.

The invention discloses a mechanical device for realizing the on-line automatic balance of a rotating machine. The device is of a split type structure, and comprises two parts of a split type moving ring and a split type stationary ring, wherein a split type transitional sleeve is connected with a rotating main shaft and the moving ring, and plays a role of supporting the moving ring; the series mounting and fixation are realized for all split components of the stationary ring in the axial direction through stationary ring set bolts; a split structure is adopted by the stationary ring; the stationary ring enwraps the moving ring in the circumferential direction; the split surfaces of all the split components of the moving ring are connected respectively by adopting ways of a bolt, a plug-in type, a connecting piece and the like; all the split components of the moving ring are subjected to the series mounting and fixation in the axial direction through moving ring set bolts. By using the split type structure of the mechanical device, an automatic balancing device is enabled to not only be applicable to the development of a novel product but also be applicable to an in-service rotating appliance; the simplification and the convenience of an automatic balancing head in mounting and disassembly processes are promoted greatly; the assembly and the disassembly of the automatic balancing device can be completed without needing to disassemble an original device; the application and popularization of the automatic balancing device are facilitated.

The invention discloses a split air foil bearing easy to disassemble and an air compressor with the same. The split air foil bearing mainly comprises a radial bearing and a thrust bearing. The radial bearing comprises a bearing sleeve, radial bump foil and radial top foil, wherein the bearing sleeve, the radial bump foil and the radial top foil are coaxially arranged in sequence from outside to inside. The thrust bearing comprises a thrust disc, thrust bump foil and thrust top foil, wherein the thrust disc, the thrust bump foil and the thrust top foil are arranged in sequence from left to right. The air compressor mainly comprises a turbine, a nut, a rotor sleeve, the radial bearing, the thrust bearing, a turbine end bearing body, a motor base, an impeller end bearing body and a rotor shaft. According to the air compressor, by adopting the split air foil bearing easy to disassemble for supporting, the problem that frequent disassembly of a traditional air compressor influences dynamic balance of a rotor is well solved, the maintenance cycle can be shortened, and the maintenance cost can be lowered; by adopting the air dynamic pressure bearing for supporting, compared with the traditional air compressor, no hydraulic system is needed, the system is simpler, the cost is lower, and higher stability is achieved in high-speed operation.

The invention provides a multi-channel signal acquisition circuit for downhole power system parameter measurement. The multi-channel signal acquisition circuit comprises a micro-processor, a parameter acquisition circuit, a storage circuit, a clock circuit, a resetting circuit and a computer. The micro-processor is connected with the parameter acquisition circuit, the storage circuit, the clock circuit, the resetting circuit and the computer. The signal acquisition circuit added in a power supply of an intelligent drilling tool can monitor the working state of a downhole power system, record the voltage and current change condition of each link of the power system, provide objective and authentic measured data for the fault analysis and maintenance of the power system of the intelligent drilling tool, prevent hidden danger of fault misjudgment and risk oversight caused by single ground detection, shorten the maintenance period of the intelligent drilling tool, improve the safety and stability of downhole work of the intelligent drilling tool and prolong the service life of the intelligent drilling tool.

The invention provides a seal weld surfacing maintenance device. The seal weld surfacing maintenance device comprises a mounting base with a containing inner cavity, a clamping mechanism, a rotating mechanism and a welding module. A mounting through groove which is vertically through and is used for allowing a seal weld carrier to penetrate into is formed in the mounting base. The mounting base isprovided with a rotating mechanism fixing plate located at the lower end of the containing inner cavity. The clamping mechanism is arranged in the containing inner cavity of the mounting base and provided with two symmetrically-arranged clamping stirrups, and the two clamping stirrups can oppositely move in the radial direction of the seal weld carrier so as to fix the mounting base to the periphery of the seal weld carrier. The rotating mechanism is installed on the lower end face of the rotating mechanism fixing plate and provided with a welding motion fixing plate capable of rotating in the circumferential direction of the seal weld carrier. The welding module is installed on the welding motion fixing plate and provided with a welding assembly and a wire feeding nozzle assembly. By means of the seal weld surfacing maintenance device, the automatic surfacing operation can be achieved, operation is simple, the mounting time is short, the surfacing maintenance time is shortened, and the seal weld maintenance operation cost is greatly reduced.

The invention discloses an underground comprehensive pipe gallery system based on autonomous maintenance of a shape-shifting robot. The underground comprehensive pipe gallery system based on autonomous maintenance of the shape-shifting robot comprises the shape-shifting robot and a control center. A gas collection device, a video camera, a first communication module, a pipeline crack and pipeline joint welding device and a corrosion-prevention spraying device are integrated on the shape-shifting robot. The signal output end of the gas collection device is connected to the signal input end of the first communication module. The video camera is in both-way communication connection with the first communication module. The signal input end of the pipeline crack and pipeline joint welding device and the signal input end of the corrosion-prevention spraying device are connected to the signal output end of the first communication module. The control center comprises a second communication module in both-way communication connection with the first communication module, a data processor in both-way communication connection with the second communication module, and command input equipment used for inputting control commands to the data processor. By adoption of the underground comprehensive pipe gallery system based on autonomous maintenance of the shape-shifting robot, timely repairing of a pipeline leakage part is achieved.

The invention relates to a distribution network on-line state monitoring system and an on-line monitoring method thereof. Compared with the prior art, the problem that original data of a distribution network cannot be monitored effectively is solved. The method comprises the following steps: state quantity acquisition: acquiring the state quantity of distribution network equipment from a distribution network system; state quantity analysis: processing the state quantity data according to the state quantity format requirement, analyzing analog quantity, state quantity and non-measured data, processing multiple data sources, making a data quality code configuration analysis, and carrying out statistical calculation; and alarm information output: outputting state quantity alarm information according to the deducted score value of state quantity. According to the invention, data of multiple pieces of substation high-voltage equipment can be monitored in real time by multiple servers by means of hierarchical management.

The invention belongs to the field of a surface thin film material for a dissolved oxygen sensor and in particular relates to a preparation method of a dissolved oxygen sensing film. Based on a fluorescence quenching principle, the invention provides the preparation method of the dissolved oxygen sensing film; a sol-gel method is mainly adopted and a lyophobic functional group with higher polarity is introduced; the service life of the sensing film is enhanced through the lyophobic functional group, so that the sensitivity is enhanced; single-dispersion nanoparticles carrying an indicator are prepared through a micro-emulsion method; the preparation method is simple; the oxytropism of a traditional dissolved oxygen sensing film and the stability of the indicator are improved; the maintenance period can be directly shortened and performances can be directly improved when the dissolved oxygen sensing film is applied to the dissolved oxygen sensor.

The embodiment of the invention provides a preparation method of a display substrate, an array substrate and a display apparatus, and relates to the technical field of display, solving the problem that a traditional contact hole process can cause solidification of photoresist, particle residue; the process time is prolonged; and the equipment maintenance period is shortened. The preparation method of a display substrate includes the steps: forming first wiring, a first insulating layer, first and second metal layers, and a photoresist layer; forming a photoresist reservation pattern above the first wiring; forming second and first metal layer reservation patterns below the photoresist reservation pattern, wherein the etching rate of the first metal layer is greater than the etching rate of the second metal layer; removing the photoresist reservation pattern; forming a second insulating layer, wherein the thickness of the second insulating layer is equal to the sum of the thickness of the first and second metal layers; and the second insulating layer is provided with a fracture area at the juncture covering the first insulating layer and the second metal level reservation pattern; utilizing a wet etching process to remove the first and second metal level reservation patterns to expose the first insulating layer; and forming a contact hole exposing the first wiring.

A high-heat conductivity and wear-resistant composite material comprises a main material and an auxiliary material, wherein the main material comprises zirconium corundum fine powder, nanometer aluminum nitride, pure calcium aluminate cement, carbon fiber, magnesium zirconium sand, silica micropowder, aluminum oxide micropowder, sodium tripolyphosphate, silicon carbide, graphene and the like; and the auxiliary material comprises phosphoric acid, ink-grade aluminum hydroxide, aluminum oxide, graphene, a sintering agent and the like. The high-heat conductivity and wear-resistant composite material provided by the invention has high compressive strength, high compactness, very high wear resistance, corrosion resistance and scouring resistance, heat shock stability and high heat conductivity. The high-heat conductivity and wear-resistant composite material is applied to wear-resistant and flame-isolating parts of a circulating fluidized bed boiler and chemical and industrial kilns, and can prolong the service life of wear-resistant layers of the wear-resistant and flame-isolating parts, so that the complex repair times, the maintenance cycle and the maintenance cost are reduced, and thus a requirement on long-cycle safe operation of the high-temperature wear-resistant layer of the circulating fluidized bed boiler is met.

The invention belongs to the protection technology, in particular to a bridge sling wire sealing protection structure and protection method of the sling of the suspension bridge and the diagonal sling of the cable-stayed bridge. The bridge sling wire comprises parallel galvanized bundles of steel wires and a layer of polyethylene jacket, wherein the peripheral surface of the polyethylene jacket is provided with a room temperature vulcanization elastic sealant layer, a neutral plain glass cloth layer, an elastic sealant layer and a protective finish paint layer in turn. The invention adopts the room temperature vulcanization elastic sealant layer and the neutral plain glass cloth to cover the entire polyethylene jacketed parallel bridge sling wire so that the external moisture and harmful material can not invade and the steel wire can be still in the anerobic condition so as to effectively prevent the corrosion of the steel wire. The protection method and protection structure used for realizing same of the invention are applicable to the maintenance project of the existing sling which is only protected by the polyethylene jacket.