1853results about How to "Extended maintenance cycle" patented technology

An apparatus for depositing thin film on a processing target includes: a reaction space; a susceptor movable up and down and rotatable around its center axis; and isolation walls that divide the reaction space into multiple compartments including source gas compartments and purge gas compartments, wherein when the susceptor is raised for film deposition, a small gap is created between the susceptor and the isolation walls, thereby establishing gaseous separation between the respective compartments, wherein each source gas compartment and each purge gas compartment are provided alternately in a susceptor-rotating direction of the susceptor.

An apparatus for depositing thin film on a processing target includes: a reaction space; a susceptor movable up and down and rotatable around its center axis; and isolation walls that divide the reaction space into multiple compartments including source gas compartments and purge gas compartments, wherein when the susceptor is raised for film deposition, a small gap is created between the susceptor and the isolation walls, thereby establishing gaseous separation between the respective compartments, wherein each source gas compartment and each purge gas compartment are provided alternately in a susceptor-rotating direction of the susceptor.

The invention discloses an intelligent substation based on sensors, a communication network and an expert system. The intelligent substation comprises a substation automation system, a primary equipment condition monitoring system and an intelligent auxiliary control system. The intelligent substation is characterized in that the real-time data of equipment operation are acquired by additionally installing various sensors, the IEC61850 standard is utilized to realize information modeling of the sensor data, a communication network is utilized to build a physical channel for information transmission, and advanced application of the substation automation system and intelligent monitoring and linkage of the primary equipment condition monitoring and auxiliary systems are realized by a background expert system, thus realizing intelligent operation and patrol functions of the substation; the sensors include an all-fiber electronic current transformer, a capacitive voltage divider type electronic voltage transformer, a primary equipment condition monitoring sensor and an internet sensor with an auxiliary system things; and the advanced application of the substation automation system includes sequential control, equipment condition visualization, intelligent alarm, distributed condition estimation, substitution function and the like. Intelligent operation and patrol functions of the substation can be realized.

The invention discloses a brushing-proof abrasion-proof and erosion-proof ceramic paint, which is characterized by the following: selecting at least one of electric-melting brown corundum, electric-melting subwhite corundum, electric-melting white corundum, carborundum and electric melting mullite with different grain sizes as main material and at least one of compact corundum, electric-melting subwhite corundum, electric-melting white corundum, carborundum, silicon nitride and boron nitride as auxiliary material; using CA50 calcium aluminate cement or pure calcium aluminate cement as binder and nanometer micro-silica powder and active alpha-Al2O3 micropowder as reinforcer; making hyperdrying active high-effective dehydragent, sodium citrate and sodium hexametaphosphate as composite additive; loading in the strength stirrer to stir 12-17min; blending evenly; packing.

The invention discloses an intelligent home fire-fighting detection and alarm system which comprises a plurality of fire-fighting detectors, a plurality of data gathering centers and a monitoring center, wherein the plurality of fire-fighting detectors are divided into a plurality of groups, each data gathering center corresponds to one group of the fire-fighting detector for communication, and the monitoring center is communicated with the plurality of data gathering centers. The invention also provides a control method based on the system. In the control method, a wireless communication network is formed by a plurality of wireless network fire-fighting detectors, data information is collected in real time and transmitted to the data gathering centers to be subjected to an intelligentized judgment of a fire degree so as to prevent a fire false alarm to the maximum limit, the transmission of detection area state information and information data by a mobile phone short message on the internet is realized through a GPRS (general packet radio service) and Ethernet communication module, thereby realizing pre-alarm and extinguishing the fire in the cradle, and the monitoring center can also realize the connection with a town fire station system so as to reach the highest fire reaction speed.

The invention provides a boiler coal combustion-improving desulfurizing and denitrifying agent composition. The composition comprises the following raw materials in parts by weight: 2-7 parts of sodium carbonate, 1-3 parts of alumina, 2-8 parts of aluminium hydroxide, 2-5 parts of ferric trichloride, 2-6 parts of ferric oxide, 3-10 parts of potassium permanganate, 3-10 parts of potassium chlorate, 10-35 parts of activated attapulgite clay, 15-30 parts of urea, 2-4 parts of ammonium formate, 2-4 parts of ammonium chloride, 6-23 parts of ammonium acetate, 3-9 parts of manganese oxide, 9-12 parts of copper chloride, 1-3 parts of copper oxide, 2-4 parts of zinc sulfate, 1-3 parts of zinc nitrate, 7-18 parts of potassium dichromate, 1.0-1.5 parts of titanium dioxide, 0.5-1.0 part of barium molybdate, 0.5-1.5 parts of cobalt sulfate, 0.5-1.5 parts of vanadium pentoxide, 0.3-0.7 part of cerium oxide, 0.1-0.2 part of sodium dodecyl benzene sulfonate and 0.1-0.2 part of alkyl glyceryl ether. The composition is convenient to use, has stable properties, plays roles of combustion improving, desulfurization and denitrification, has coal saving rate of 8-25% and can remove fixed sulfur by 50-70%.

A system and related method for separating floating and nonfloating particulate and entrained, suspended, and / or dissolved contaminants from a fluid. The system includes a tank with a lower chamber spaced from an outlet or upper chamber by a confinement deck. The deck includes one or more sockets for receiving one or more filter units for fluid treatment. In addition, the lower chamber of the tank acts as a pretreatment sump to remove floating and nonfloating particulates, thereby reducing the load on the filter units. The filter units are configured for radial and / or upward flow of the fluid from the lower chamber. The filter units may include one or more filter media through which the fluid pass prior to exiting the tank. The filter units include a removable screening retainer for retaining the filter media and / or to screen relatively large contaminants. The filter unit may be removed for ease of tank maintenance and replacement of filter media. The system allows a method of contaminated fluid treatment under varying flow conditions by directing the fluid radially and / or upwardly through the retainer. Establishing both types of flow through the filter unit improves filtering and extends filter life without compromising desired flow through rates.

A fire-extinguishing aerosol not generating harmful substance for electric equipment (computer, communication equipment, electric generator, etc) is prepared from oxidant (strontium nitrate or strontium nitrate / potassium nitrate), reducer (guanidine nitrate or dicyandiamide) and modifier (potassium ferrocyanide, aluminium powder, carbon powder and phenolic resin). After it is ignited by sensor, alot of fire-extinguishing particles are generated to cover on the object to be protected while the inert gas is generated for extinguishing fire.

The invention relates to a fume sampling probe which mainly consists of a sample pipe, a sample flange, a sample probe mounting plate, a filter, an air cylinder, a standard air inlet, a sample gas outlet, an electric heater, a backblowing air heater, a puller screw, a lever, an internal backblowing hole, an external backblowing hole, a temperature probe, a temperature controller, an electromagnetic valve, a gas-type fitting, a case body and an electrical gas circuit. The invention has the advantages that filter elements of the filter made of resistant material are changed and clean for use alternately, a special backblowing technology method is realized through the electrical gas circuit, the energy consumption is saved, the backblowing effect is good, only one maintenance is needed in one year, the heating temperature can be randomly set, the automatic backblowing period and time can be freely set according to the on-site fume condition, the service life is long, the running is stable and reliable, and the running cost is low, thereby being widely applied to a fume discharge continuous monitoring system of a fixed pollution source in the fume sampling and processing field.

A system and related method for separating floating and nonfloating particulate and entrained, suspended, and / or dissolved contaminants from a fluid. The system includes a tank with a lower chamber spaced from an outlet or upper chamber by a confinement deck. The deck includes one or more sockets for receiving one or more filter units for fluid treatment. In addition, the lower chamber of the tank acts as a pretreatment sump to remove floating and nonfloating particulates, thereby reducing the load on the filter units. The filter units are configured for radial and / or upward flow of the fluid from the lower chamber. The filter units may include one or more filter media through which the fluid pass prior to exiting the tank. The filter units include a removable screening retainer for retaining the filter media and / or to screen relatively large contaminants. The filter unit may be removed for ease of tank maintenance and replacement of filter media. The system allows a method of contaminated fluid treatment under varying flow conditions by directing the fluid radially and / or upwardly through the retainer. Establishing both types of flow through the filter unit improves filtering and extends filter life without compromising desired flow through rates.

The invention discloses a telligent dry separator (TDS). The telligent dry separator is characterized in that an intelligent identification method is adopted for establishing corresponding analysis models according to different characteristics of coal quality, through big data analysis, digitalized identification is conducted on coal and gangue, and finally the gangue is discharged through an intelligent execution system. The telligent dry separator (TDS) comprises four major systems, namely a feeding system, a material distribution system, an identification device and an execution mechanism, and three auxiliary systems, namely an air supplying system, a dedusting system and an electric control system. By means of the telligent dry separator (TDS), separation precision can be improved, the lower separation limit can be further lowered, and a condition is created for achieving the effect that all block raw materials ranging from 3mm to 300 mm adopt the intelligent dry separation process. Compared with traditional cleaning equipment, the telligent dry separator (TDS) has the advantages that on the aspect of construction investment, a system can be simplified, investment can be reduced, and the construction period can be shortened; on the aspect of separation effects, precision can be guaranteed, the heat value can be raised, and no coal slime is generated; on the aspect of production cost, consumption can be lowered, maintenance can be reduced, and manual work can be decreased.

The invention relates to a crack self-healing bituminous concrete and a preparation method thereof. The bituminous concrete comprises coarse aggregate, fine aggregate, fillers, pitch, rigid fiber and flexible fiber, wherein the mixing amount of the rigid fiber is 0.50-2.5wt.% of the total amount of the coarse aggregate, the fine aggregate, the fillers and the pitch, and the mixing amount of the flexible fiber is 0.10-0.35wt.% of the total amount of the coarse aggregate, the fine aggregate, the fillers and the pitch. The preparation method of the concrete comprises the steps of weighing dried aggregates, placing the aggregates in a material containing disk, mixing the aggregates uniformly, preheating in a drying oven to the temperature of 180 DEG C, and heating the fillers separately to the temperature of 180 DEG C; preheating the pitch to the temperature ranging between 160 DEG C and 175 DEG C; drying the rigid fiber and the flexible fiber respectively for backup use according to the requirement; and firstly mixing the rigid fiber into the mixed aggregate with blending, then blending the aggregate and the liquid pitch, then blending with the fillers, then blending with the flexible fiber, and finally forming the bituminous concrete. According to the bituminous concrete and the preparation method, the low-temperature cracks of bituminous pavements are reduced to the minimum and can be healed spontaneously, early-stage cracking is avoided effectively, the service life of the bituminous pavements is prolonged, and the project implementation is convenient.

The invention relates to an automatic guiding system and method applied to an unmanned freight car in an enclosed place, belongs to the field of unmanned driving, and aims at solving the problem that application of unmanned driving to enclosed places as a harbor is high in the reconstruction cost and low in accuracy of automatic driving navigation. Main and auxiliary positioning systems obtain pose information of the central point of the car in real time; a sensing time monitors lanes by detecting, identifying and classifying barriers and determining the running speed; a decision system receives data uploaded by the positioning and sensing systems, makes a decision, and plans a local path; and a control system calculates a control command including the target angle and speed of wheels according to reference point information of the local path planned by the decision system, and issues the control command to an execution mechanism. The system and method are suitable for reconstruction automatic guidance of unmanned driving in the enclosed place, and is high in navigation precision.

The invention provides a steel coil tensioning device of a full-automatic uncoiler, belongs to the technical field of uncoilers and overcomes the defects of high price, huge volume, difficult popularization and application and short service life of a conventional large heavy-duty uncoiler. The steel coil tensioning device of the full-automatic uncoiler comprises a hollow rotary shaft of which one end part serves as a construction section and the other end serves as a cantilever section, and a plurality of tensioning plates distributed at the periphery of the cantilever section of the rotary shaft; the construction section of the rotary shaft is connected to a base; a connection rod is arranged between each tensioning plate and the rotary shaft; one end of the connection rod is hinged to the corresponding tension plate, while the other end is hinged to the rotary shaft; and the tensioning plate is connected with a spreading / shrinking mechanism capable of driving all tensioning plates to spread or shrink at the same time. The tensioning device has the advantages of low manufacturing cost, adaptability to various steel coils with different specifications and relatively light weight, less abrasion, good tensioning effect and long maintenance period.

A fire-extinguishing aerosol not generating harmful substance for electric equipment (computer, communication equipment, electric generator, etc) is prepared from oxidant (strontium nitrate or strontium nitrate / potassium nitrate), reducer (guanidine nitrate or dicyandiamide) and modifier (potassium ferrocyanide, aluminium powder, carbon powder and phenolic resin). After it is ignited by sensor, a lot of fire-extinguishing particles are generated to cover on the object to be protected while the inert gas is generated for extinguishing fire.

The invention discloses a titanium nitride atomic layer deposition device and a deposition method thereof. According to the deposition method thereof, segmented gradient heat-up heating is carried outon a source bottle outlet pipeline and a titanium precursor conveying pipeline, segmented gradient heat-down heating is carried out on a front-stage pipeline, an oxidant blowing pipeline is directlyconnected into a vacuum pump without passing through a chamber, during the ALD reaction, a preprocessing before the process is carried out through the operation that the flow ratio between an oxidizing agent and a titanium precursor vapor is improved, the chamber and the pipeline are vacuumized for multiple times, so that the generation of particles in the chamber, especially in the front-stage pipeline can be reduced, the maintenance period of the vacuum pump can be prolonged, and the service life can be prolonged; residuals of the precursor and the oxidizing agent on the wall of the pipelineand in the cavity can be effectively removed, the occurrence of unexpected reactions is reduced, and the impurity pollution is reduced; and purity of a thin film can be improved, and a complex gas processing system is prevented from being arranged.

The invention relates to ceramic coating used for a heating furnace. The ceramic coating comprises the following components: ceramic micro powder, an inorganic bonding agent and a linear thermal expansivity regulator. The invention also provides a method for preparing the ceramic coating for the heating furnace. The ceramic coating has the characteristics of having improved radiance and thermal shock resistance, being efficient and energy-saving, prolonging the service life of furnace linings and furnace tubes, improving temperature uniformity and the like, as defined below: (1) the energy consumption is reduced, the energy is saved by more than 3 percent and pollutant discharge is reduced; (2) the temperature uniformity in the heating furnace is improved: (3) the metallurgy stability of the furnace tube of the heating furnace is improved, the coking and scaling of the furnace tub are delayed, and the absorbing capacity of the furnace tube can be maximized; (4) the emissivity of the surface of the refractory lining layer can be maximized so as to increase the secondary radiation of radiant heat (energy) and increase the efficiency of the radiant section; and (5) the outer wall temperature and the exhaust gas temperature of the heating furnace can be reduced by more than 5 percent.

The invention discloses an additive which can reduce pollution emission and improve combustion efficiency when in the combustion of bunker coal, which more particularly relates to a blast furnace coal injection catalyzing oxidant. The invention consists of soft manganese ore, fluorite powder, magnesium carbonate and rare earth metal oxide, the production method is that the raw materials are respectively smashed into the granules below 80 meshes, mixed evenly and directly added into the bunker coal for even mixing according to the weight proportion of 0.2 to 5 percent; or the raw materials are fed on a conveying raw coal belt by a spiral feeding machine, sprayed and blown into a blast furnace; the invention can also be taken as the bunker coal additive of a powder coal boiler or a boiling furnace.

The invention relates to a multi-station material conveying system. The multi-station material conveying system comprises a control device. The multi-station material conveying system is characterized by comprising a feeding mechanism and a multi-station mechanical arm, wherein the feeding mechanism is installed at the rear portion of the multi-station mechanical arm; the feeding mechanism comprises vibrating disks, vibrating disk tracks, feeding cylinders, feeding tracks, track supports, thin cylinders, push jaws and push jaw installation plates, wherein each vibrating disk is connected with the tail end of the corresponding vibrating disk track, blanking ports are formed in the front ends of the vibrating disk tracks, the blanking ports are connected with the top ends of the feeding cylinders, and the feeding cylinders are vertically installed on the feeding tracks; the feeding tracks are fixedly connected with a lower mold frame through the track supports, the thin cylinders are installed at the bottoms of the feeding tracks, and the tail end of a piston rod of each thin cylinder is fixedly connected with the tail end of the corresponding push jaw installation plate; the multi-station mechanical arm comprises a main machine body, a sucking disk device and a protection device, and the protection device is arranged at the periphery of the main machine body.

The invention discloses a multi-level radio network-based self-adaptive signal lamp system and a control method thereof. The system is characterized by consisting of a management terminal, a gateway electronic control unit (ECU), a signal driving test ECU, and a vehicle detecting ECU; in the invention, the gateway ECU, the signal driving test ECU, and the vehicle detecting ECU arranged at each intersection are respectively taken as a coordinator, a router and a terminal node of ZigBee network for performing network and layout; the excellent characteristics of radio sensing network, such as self-organization, multi-hop routing, etc. are kept; the integral robustness, reliability and maintainability are improved; and the construction and electrical wiring are simplified. The global system for mobile communications (GSM) interface of the gateway ECU makes the management terminal and a plurality of intersections realize a green wave band coordination control function in short message internet manner. Based on a hierarchical control system of a multi-level network structure, the system can be used for handling overall traffic flow intelligence dispersion on a large scale, and has the characteristics of capability of independent running at a single intersection and keeping system intelligence even a management terminal network system fails.

The invention discloses a cleaning device. The cleaning device comprises a shell, a power source, a walking unit, a guide suspension unit, a cleaning unit, a reversing unit, a sliding part, a magnetic element, a sensor and a control unit. A photovoltaic cleaning machine is suspended on a cleaned object through the guide suspension unit, and the guide suspension unit guides the walking direction of the cleaning device; the cleaning unit is arranged on the shell and is in contact with the surface of the cleaned object; the reversing unit comprises a support arranged on the shell; the sliding part is arranged on the support in a sliding manner, and extends to the position outside the support by the preset distance; the magnetic element is fixedly arranged on the sliding part and moves along with the sliding of the sliding part; the sensor is arranged at the predetermined position of the shell, and detects the motion of the magnetic element; and the control unit is connected with the sensor and drives the walking unit and the cleaning unit to move according to signals of the sensor. Through the scheme, false triggering of the cleaning device in the cleaning process can be effectively avoided, and the maintenance period is prolonged.

The invention relates to a redundancy architecture control system and a method thereof capable of keeping original system function and performance. The system comprises a controller, a HMI (Human Machine Interface) server, a plurality of operator stations, a plurality of I / O (Input / Output) slave stations, switches, a communication network and a fieldbuses; the HMI server is provided with a HMI server Shell device, the operator stations are provided with operator station Shell devices, and the controller is provided with a controller Shell device; and the HMI server Shell device and the operator station Shell devices are connected with the controller Shell device through two communication network segments and two switches of the communication network, and the controller is connected with the I / O slave station through two sets of fieldbuses. In the redundancy architecture control system provided by the invention, the Shell devices are added into each station, so that the interface and the operating mode of the redundant system are kept to be the same with that of the original system, users completely cannot sense the variation, and the two sets of systems standby to each other are safe and can run independently.

The invention discloses a magnetic liquid sealing device with wide temperature applicability. The magnetic liquid sealing device comprises a rotating shaft (11), a shell (12), a bearing part (13) anda magnetic liquid sealing part (14); magnetic liquid A (1409 and 1411) is fluorocarbon-based or ester-based magnetic liquid, and magnetic liquid B (1410) is kerosene-based or engine oil-based magneticliquid; the magnetic liquid A (1409) is injected into pole teeth (1406) corresponding to pole shoes (1403) adjacent to a sealing space, and the magnetic liquid B (1410) is injected into at least onestage of pole teeth (1407 and 1408) corresponding to the other pole shoes (1404 and 1405). With the structure, the magnetic liquid sealing device has a low rotational torque under a working conditionof low temperature and low evaporation under a working condition of high temperature; and according to the magnetic liquid sealing device, the pollution caused by the evaporation of the magnetic liquid to the sealing space is effectively prevented, the evaporation loss of the magnetic liquid is also reduced due to the reduction of the evaporation amount of the magnetic liquid, and the maintenancecycle and service life of the magnetic liquid sealing device are indirectly prolonged.

Computer system to be used in the cockpit of an aircraft, comprising a fixed screen, a docking unit and a portable computer in order to display on the fixed screen in the cockpit information which is stored on the portable computer, wherein the docking unit comprises an embedded computer with a network connection for connecting an arbitrary portable computer to the computer system, a screen connection for connecting the fixed screen to the docking unit, a graphic processor, a power connection and an input connection for receiving signals from input means and a corresponding retrofitting set, a corresponding docking unit and a corresponding method.

The invention relates to a removing method and a removing apparatus for sulfate in high-salt petrochemical wastewater, and belongs to the technical field of wastewater treatment. According to the present invention, in order to provide a method with characteristics of low cost, simpleness, convenience and high sulfate removal rate, and an apparatus thereof, according to the principle of conversion of sulfate into hydrogen sulfide with sulfate reducing bacteria, residual sludge produced by a high-salt petrochemical wastewater treatment system precipitation tank is subjected to ultrasonic wave degradation through an ultrasonic wave treatment, the obtained sludge or sludge supernatant and high-salt petrochemical wastewater are mixed, and then enter an anoxic tank or anaerobic tank so as to provide a carbon source for the sulfate reducing bacteria, and a blowing removing manner under a N2 solution is adopted to remove the hydrogen sulfide so as to reduce inhibition effects of hydrogen sulfide and other sulfides on the sulfate reducing bacteria; and the sulfate reduction can be effectively promoted, the sulfate removal rate can be increased, the calcium sulfate scaling tendency can be reduced, the maintenance period and the service life of the equipment can be prolonged, and the system stability is increased.

The invention discloses a pitch system for a megawatt wind generating set and a pitch control method of the pitch system. The pitch system comprises a battery charger, a direct current 24V power supply module, a direct current bus, a pitch controller, a field communication bus, a low voltage inverter, a pitch motor and a super-capacitor, wherein the super-capacitor is directly hung on the direct current bus, and the voltage of the direct current bus is reduced at the same time. According to the pitch control method, a main controller sends an instruction to the pitch controller, the pitch controller controls a pitch driver, and the pitch driver drives the pitch motor, so that a blade of the wind generating set is controlled to reach the corresponding position. The pitch system uses the super-capacitor as a backup power supply, so that the charging time is greatly shortened, the pitch system can be used in a low-temperature environment, the interval time of maintenance is prolonged, which reduces the cost; the voltage of the direct current bus of the pitch system is reduced; the number of super-capacitor modules is reduced; and the production cost of the pitch system is lowered.

The invention relates to a turbine cooling blade with a blade tip leakage prevention structure. A blade body is internally provided with a cooling channel; a blade tip partition rib extending from the front edge of the blade body to the tail edge of the blade body is arranged on the outer surface of a blade tip plate of the blade body; and more than one jet hole communicated with the cooling channel is distributed on the blade tip plate from the front edge to the tail edge of the blade body and is positioned at one side or two sides of the blade tip partition rib along the extending direction of the blade tip partition rib. According to the turbine cooling blade with the blade tip leakage prevention structure, the blade tip partition rib is arranged on the outer surface of the blade tip plate from the front edge to the tail edge of the blade body; when in use, the blade tip partition rib is positioned in a gap between the turbine blade and the sealing structure so as to replace the existing blade tip girdle structure, so that gas loss in the blade tip gap can be reduced, and no blade tip girdle structure is needed; and at the same time, the structure of the blade tip partition rib is simple, so that the blade tip partition rib can be rapidly maintained when being abraded or damaged after long time work of the turbine blade; and therefore, the turbine blade has high maintainability.

The invention discloses a multipurpose broad-gauge container platform wagon. An under frame of the multipurpose broad-gauge container platform wagon comprises a centre sill, side beams, sleeper beams, end beams, side crossbeams, a middle crossbeam and longitudinal beams. Fixed anti-theft container door shielding devices are arranged on the end beams of the under frame or movable anti-theft container door shielding devices are arranged on the side crossbeams of the under frame; 8 to 12 sets of extension-type spin locks are arranged at joints of the end beams, the side crossbeams, the middle crossbeam and the side beams of the under frame; and each extension-type spin lock mainly comprises a lock head, a lock body and a handle. The container platform wagon has the characteristics of loading conditions meeting requirements, compact and secure structure, long service life and application to running on lines with a 1,676 mm gauge. The invention also provides the container platform wagon, which can conveniently and securely fix containers of different sizes and prevent anti-theft devices for container doors from being randomly opened.

The invention discloses a method and a device for monitoring arrester resistance current by introducing unconventional PT. Firstly, the monitoring device accesses sampled value (SV) messages of merging units (MU), decodes the SV messages, detects the time of zero crossing point of busbar voltage, calculates the channel delay accurately by relying on an external synchronous clock, and restores sinusoidal waveform of the busbar voltage accurately. Secondly, the monitoring device collects leakage current sensor information mounted on a grounding wire of an arrester, and decomposes the leakage current of the arrester into resistance current and capacity current. Thirdly, the monitoring device determines the operation condition of the arrester based on the change rate of the resistance current and the ratio of the resistance current value in the arrester leakage current. According to the method and the device for monitoring arrester resistance current, the problem that some online monitoring devices cannot introduce busbar voltage signals for calculating the arrester resistance current when the busbar voltage is digital signals in intelligent substations or digital substations is solved effectively, defects of early aging, insulation hidden dangers and the like of arresters can be found earlier, and application prospect in the market is broad.