39results about How to "Satisfy the operability" patented technology

The invention relates to a wide temperature range polyol ester lubricating oil composition suitable for an aircraft engine. The wide temperature range polyol ester lubricating oil composition suitable for the aircraft engine consists of the following components in percentage by weight: 90-94 percent of polyol ester synthetic base oil, 2-5 percent of an organic polysulfide extreme-pressure wear-resisting agent, 0.5-1 percent of an antioxidant, 1-3 percent of a detergent dispersant and 0.5-1 percent of a corrosion inhibitor. Compared with traditional aircraft lubricating oil, the wide temperature range polyol ester lubricating oil composition has the advantages of excellent low-temperature starting performance, favorable thermal oxidation stability, strong hydrolytic stability, excellent lubricating performance, biodegradability and the like, and can meet the requirements of a modern aircraft engine on long-period rigorous working condition running and wide temperature range use.

The invention relates to a parallel connection three-terminal direct current power transmission system and a power coordination control method of the same. The parallel connection three-terminal direct current power transmission system includes LCC (Line Commutated Converter) rectifier stations and LCC inverter stations, wherein two LCC converters are connected through a direct current power transmission line; the direct current power transmission line is connected with a VSC (Voltage Source Converter); each LCC rectifier station is controlled by a constant power; each LCC inverter station is controlled by the constant direct voltage / constant extinction angle; and the VSC is controlled by the constant power. The power coordination control method includes the steps: respectively acquiring the direct current command values of the two rectifier stations; when the VSC is operated in a rectification mode, the current command value of the LCC inverter station is obtained when the sum of the direct current command values of the two rectifier stations subtracts a set current margin value; and when the VSC is operated in an inversion mode, the current command value of the inverter station is obtained when the difference between the direct current command values of the two rectifier stations subtracts the current margin value. The coordination control strategy is simple and easy to use, and can avoid complicated coordination and cooperation between each terminal of a pure LCC type multi-terminal direction current, and has a great practical engineering value.

The invention provides real-time control algorithm of International Association for the Properties of Water and Steam (IAPWS)-IF 97 based on thermal properties of the water and the steam. The algorithm carries out modular processing on a formula of the IAPWS-IF 97 from engineering practical, safe and reliable angles, can finish calculation of the thermal properties of normally-seen water and steam under the condition of small load calculation, is suitable for being applied to finishing the high-accuracy calculation of the thermal properties of the water and the steam in various process control systems, is particularly specific to needs of monitoring operation of a supercritical unit with variable-pressure operation at present, and makes up the defects of a function of online calculation of the thermal properties of the water and the steam of an exiting automatic control system.

The invention discloses an automatic control system for micro-irrigation. The system is used for agricultural micro-irrigation work including drip irrigation and microspray irrigation, and comprises a main controller and a remote controller. The main controller comprises an infrared receiver. The remote controller comprises an infrared transmitter. The remote controller wirelessly transmits data to the main controller in an infrared mode. The remote controller comprises a keyboard and a display screen. A soil humidity sensor, a rainfall sensor and an electromagnetic valve are connected with the main controller. Soil humidity and rainfall detection is conducted through the soil humidity sensor and the rainfall sensor, and switch-on and switch-off control instructions are sent to the electromagnetic valve. A clock is arranged in the remote controller. The main controller and the remote controller are low-voltage micro-static power consumption chips; a solar rechargeable cell can be adopted as a power supply. Running mode parameters of the main controller are wirelessly transmitted to the main controller in an infrared mode after being edited on the remote controller and stored.

The invention provides an intelligent control method for an air conditioner. The intelligent control method comprises the following steps of step 1, acquiring a running parameter A stored in the previous day; step 2, making an air conditioner run, and taking the running parameter A as a current running parameter; step 3, judging whether a user changes the running parameter or not, if yes, taking arunning parameter B changed by the user as a current running parameter, then storing the B, and if not, carrying out step 4; and step 4, judging whether a running parameter C matched with the currenttime exists or not by the air conditioner according to running parameter information stored in the previous day, if yes, taking the running parameter C as a current running parameter, then returningto step 3, if not, keeping the air conditioner continuously run basing on the current running parameter, and then returning to step 3. The user habit in the previous day is learnt through the intelligent self-learning of the air conditioner, thus the air conditioner set habit of the user is intelligently applied to the air conditioner control process of the day, the automatic and intelligent regulation and control process of the air conditioner is realized, and the requirements of the user on the running mode and the target temperature of the air conditioner at different time periods each dayare met.

The invention belongs to the technical field of sewage treatment equipment, and particularly relates to integrated high-efficiency sewage treatment equipment for treating rural domestic sewage. The high-efficiency sewage treatment equipment is mainly composed of an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank and the like. The high-efficiency sewage treatment equipment cansolve the problems that traditional anaerobic, anoxic and aerobic process integrated equipment is high in energy consumption during running, mud in the sedimentation tank easily runs away, and the concentrations of suspended matter and phosphorus of effluent exceed the standards; nitrification, denitrification, filtration and other advanced treatment are simultaneously conducted in a ceramsite filler area, and the effluent is stable and reaches the super-level-A emission standards.

The invention relates to a cluster measuring and controlling device for spacer layer equipment of an intelligent substation. The cluster measuring and controlling device comprises two sets of measuring and controlling sub-equipment having identical configuration of media boards and being standby equipment for each other, wherein the board configuration of each set of measuring and controlling sub-equipment comprises a power supply board, a process layer interface board with an SV / GOOSE receiving interface and a GOOSE transmitting interface, an input board and a main processing board; and the power supply board, the process layer interface board and the input board of each set of measuring and controlling sub-equipment are electrically connected with the main processing board respectively.After replacement of an existing measuring and controlling device with the cluster measuring and controlling device, the number of measuring and controlling devices in an interval layer is greatly reduced; the installation, debugging, operation and maintenance cost of a monitoring system is lowered; and the outstanding problem of no indepdnent stand-by measuring and controlling device in the existing monitoring system is solved.

The invention discloses a short circuit ratio-based multi-infeed ultra-high voltage direct current power grid converter reactive power configuration method. The method comprises the following steps that: step 1, adjacent date and historical load data and wind / light power generation power data are obtained; step 2, wind and light power generation power and daily load are predicted; sep 3, the equivalent daily load curve of a prediction date is constructed; step 4, the area of a wind power generation curve is calculated; step 5, heat storage capacity is calculated; step 6, an area under the loadcurve is solved through adopting a Monte-Carlo algorithm curve area solution method, and the heat storage capacity in an active power distribution network is matched with peak load; and step 7, an equal-area replacement method is adopted to reconstruct the equivalent daily load curve according to a matching result satisfying requirements. With the method provided by the invention adopted, a wind,light, storage, and heat multi-energy flexibly-complementary active power distribution load can be reconstructed more safely, economically, reliably and effectively; and a technical base and practical method can be provided for the safe, economic and efficient dispatching of the active power distribution network.

The invention discloses a bundled integrated dynamic cable for an offshore oil system, which comprises a power transmission insulating core unit, an optical fiber communication unit, a pipeline unit, a control cable unit, a filling reinforcement unit, an inner sheath, an armored reinforcement unit and an outer sheath ; Three identical power transmission insulated wire core units are stranded, and the pipe unit, the optical fiber communication unit and the control cable unit are respectively embedded in the three large gaps, and the solid core is filled with filling reinforcement units in the entire cabled stranded unit, The cabled unit is covered with an inner sheath, the inner sheath is wound with an armored reinforcement unit, and the armored reinforcement unit is extruded with an outer sheath. The cable structure of the present invention is reasonably designed, capable of simultaneously transmitting multi-circuit power consumption, changing the design scheme of single-circuit power supply of conventional submarine cables, reducing the laying space, and avoiding various hidden dangers caused by complicated laying of many submarine cables in a narrow space.

Disclosed is a multifunctional integrated modular control table integrated with a comprehensive backup panel. A combined form of steel structures is adopted in the control table; the control table is integrally formed by splicing corner modules and a straight line module, and a high-pressure fire-resisting wear-resisting decorating plate is laid as the surface of the control table; the emergency backup panel is arranged in the control table; an emergency backup button panel is arranged at a position, in front of the emergency backup panel, on the high-pressure fire-resisting wear-resisting decorating plate; the straight line module and the corner modules are fixedly provided with five back wallboard fixed liquid crystal supports; liquid crystal screens are fixed to the side faces of the back wallboard fixed liquid crystal supports; two parallel weak wire ways are fixed to the positions, inside the control table, of the lower plane of the high-pressure fire-resisting wear-resisting decorating plate; and strong wire ways are fixed to the bottom of the control table. According to the multifunctional integrated modular control table, the requirements for 24-hour running, monitoring, communicating and fire prevention can be met; knee containing space with the enough depth is provided. Due to the fact that guide rails are arranged, the control table can be wholly moved, and the enough maintenance channel space can be obtained.

The invention discloses a mobile online water quality detection device which consists of a mobile trolley, a sampling pipeline system, a water quality analyzer, a power distribution system and a GPRS (General Packet Radio Service) communication module, wherein the sampling pipeline system is connected with the water quality analyzer and is used for extracting a water sample from a point required to be monitored for water quality analyzer detection; the water quality analyzer is used for water quality analysis and measurement and transmitting analyzed data to the GPRS communication module; the GPRS communication module is used for acquiring water quality analysis results and transmitting the data to equipment terminal through GPRS. The movable online water quality detection device disclosed by the invention has the advantages that in combination with a GPRS internet communication technology and with the adoption of mobile online monitoring, the construction cost is greatly lowered for a user, the water quality can be flexibly monitored at different monitoring points, and a historical data report and a data trend chart are automatically generated; meanwhile, management personnel can understand the water quality at the monitoring points in real time through a mobile terminal.

The invention relates to a portable digital processing and receiving device and method for electromagnetic ultrasonic signals based on an FPGA. The device comprises an analog-digital conversion circuit, an FPGA, a sampling key, an SDRAM memory, a storage key and a display screen, wherein the analog-digital conversion circuit is taken as an analog signal receiving end of the device and is used forreceiving the electromagnetic ultrasonic signals, the output end of the analog-digital conversion circuit is connected with the FPGA, the input end of the FPGA is connected with a sampling key and a storage key respectively, the output end of the FPGA is connected with the display screen and the SDRAM memory respectively, the display screen is used for displaying characteristic signal waveforms and waveform relevant information, and data processed by the FPGA is stored into the SDRAM memory through the storage key; and the FPGA comprises an analog-digital conversion module, a data processing module, a display module and a storage module. The device is small in volume, low in cost and power consumption and can be used for receiving high-speed electromagnetic ultrasonic signals in a complexenvironment and carrying out digital processing and waveform display on the electromagnetic ultrasonic signals.

The invention relates to a transformer substation combined electric appliance power distribution device, and particularly relates to a 220 kV bus lengthened type single-row GIS equipment. The 220 kV bus lengthened type single-row GIS equipment is structurally characterized in that the line-side voltage transformers of two groups of buses are upwardly arranged above a line-side outgoing branch bus.The group B of buses is arranged below the line-side voltage transformer of its own group and the line-side voltage transformer of the group A of buses. Between the current transformer of the group Bof buses and the circuit breaker of the group B of buses, a long sleeve internally provided with a branch bus is arranged to connect the current transformer with the circuit breaker. The group A of buses is arranged to be tightly attached to the circuit breaker of the group A of buses. The group A of buses and the line outgoing equipment of the group B of buses are located in the lower space of the long sleeve connected between the current transformer of the group B of buses and the circuit breaker of the group B of buses. In this way, the group A of buses is equal to the group B of buses inlength. The group A of buses and the group B of buses are parallel and are in the lower-order arrangement of the same plane. The 220 kV bus lengthened type single-row GIS equipment is simple and convenient in construction, and the overall layout of the power distribution device is not changed at all. Meanwhile, the double-layer wire outlet is not needed and the construction cost is effectively reduced. The line wiring is clear and simple, and the operation reliability is improved. Meanwhile, the operation and maintenance difficulty is reduced.

The invention discloses a photovoltaic output typical scene extraction method combined with a spectral clustering algorithm, and relates to the technical field of renewable energy output prediction, a photovoltaic output typical scene is extracted based on the spectral clustering algorithm, clustering analysis can be carried out on data only through a similarity matrix between the data in the calculation process, and the calculation efficiency is improved. The spectral clustering algorithm can realize dimension reduction processing of high-dimensional data, and the result obtained by clustering the high-dimensional data of photovoltaic output is obviously superior to that obtained by a traditional mean value algorithm, so that a typical scene of photovoltaic output can be extracted more efficiently and accurately; the method solves the problem that an existing k-means algorithm is difficult to accurately cluster high-dimensional photovoltaic output data, realizes accurate description of randomness and volatility characteristics of photovoltaic output in a power distribution network, and eliminates the influence of photovoltaic output uncertainty on long-term planning operation and short-term scheduling in a power system. The photovoltaic reasonable planning body condition in the power distribution network is met, and safe, stable and environment-friendly operation and development of a power system are achieved.

The invention provides a control method and device for a thermal management device of an automobile and a storage medium. The control method comprises the steps that an operation mode required by an automobile cabin is determined; an operation mode required by the battery is determined; and the thermal management device is controlled to enter a corresponding operation mode according to the operation mode required by the vehicle cabin and the operation mode required by the battery, wherein the method of controlling the thermal management device to enter the corresponding operation mode comprises at least controlling a cooling and heating air door to be in a full-cooling mode, a full-heating mode or a closing mode and controlling the water pump to be in an opening state or a closing state. The thermal management device is controlled to enter the corresponding operation mode according to the operation mode required by the vehicle cabin and the operation mode required by the battery, and eight operation modes including vehicle cabin refrigeration, battery cooling, vehicle cabin refrigeration+battery cooling, vehicle cabin heating, battery heating, vehicle cabin heating+battery heating,vehicle cabin heating defogging and battery cooling and vehicle cabin heating can be achieved.

The invention discloses a greenhouse heat collecting and releasing intelligent control device and an efficient control method, and belongs to the field of facility garden environmental engineering. Agreenhouse water circulation solar collecting and releasing system of the device comprises a heat collecting and releasing device, a water supply pipeline, a water return pipeline, a water divider, awater collector, a heat storage water pool, a submersible pump, an automatic control system, a water temperature sensor, a mold surface device and a mold surface temperature sensor. The efficiency control method includes the steps of controlling the day heat collecting process of the heat collecting and releasing system through the difference value between the temperature of the surface of the mold surface device and the water temperature, controlling the night heat releasing process of the heat collecting and releasing system through the temperature of the surface of the mold surface device,and making the heat collecting and releasing system to operate at proper time. By means of the intelligent control device with the greenhouse water circulation solar heat collecting and releasing system, the heat collecting and releasing system is controlled to operate at proper time through the difference value between the mold surface temperature and the water temperature, and the heat collecting efficiency and heat collecting amount are large; meanwhile, invalid operating and energy consumption are avoided, and the system can also collect heat in cloudy days and hazy days after being started.

The invention discloses an ice storage air conditioner cooling load demand prediction distribution method and system, and the method comprises the steps: building a target building moment cooling load prediction map, and dividing an ant colony into a plurality of sub-ant colonies; carrying out cold load demand prediction value search by utilizing each sub-ant colony, and sorting cold load demand prediction value search results of each sub-ant colony according to utility function values; obtaining ants corresponding to the cooling load demand prediction value search results tending to be in the middle in the cooling load prediction value search results according to the sorting result, updating pheromones of the ants to neighbor sub-ant colonies, and comparing the cooling load demand prediction values of the day to be regulated and controlled at the current moment searched by each sub-ant colony, outputting the optimal cooling load demand prediction value of the day to be regulated and controlled at the current moment; and performing curve fitting, and if the current moment is the last moment of the to-be-regulated day, obtaining a total cold load demand prediction value of the to-be-regulated day of the target building, thereby realizing cold load demand prediction distribution. The operation efficiency of the refrigerator is improved, and higher benefits are obtained.

The invention provides a grounding protection method and system based on a centralized new energy grid connection mode. Wiring modes and related grounding modes of grid connection primary systems of awind field and a photovoltaic power station are determined, and protection tripping or line selection tripping is determined in combination with a specific grounding capacitance current value; and according to the grounding modes of the wind field and the photovoltaic power station, corresponding over-current protection and zero-sequence over-current protection schemes are configured, and fault sequence network analysis is carried out by adopting a symmetric component method to further determine the protection tripping scheme. Tripping and shunt tripping strategies determined by the determined protection scheme make special requirements for guaranteeing rapid fault removal, avoiding overvoltage and the like; and the needs of two-party protection and safe and stable operation are met at the same time on the premise that the selection is unified with a power system.

The invention particularly relates to a sliding rail type screen shielding device which comprises a movable support and a plurality of screen shielding modules, and the screen shielding modules are slidably hung on the movable support. The sliding rail type screen shielding device provided by the invention can meet the comprehensive requirements of shielding performance, safety, stability, convenience and avoidance of repeated disassembly and assembly, the exposure dose of workers is reduced, and optimal management of radiation protection of a power station is realized.

The invention provides a vibration and shock double-control structure for a wood structure ancient building along a subway and a design method. The control structure comprises a vibration isolation layer between the bottom of the wood structure ancient building and a platform foundation and dampers arranged above square columns and connected with columns, wherein the vibration isolation layer comprises an underpinning chassis (5) located at the bottom of the building, a vibration isolation support (4) and a vibration isolation support chassis (6) located on the platform foundation and used for supporting the vibration isolation support. Meanwhile, based on numerical analysis, the complete and feasible design method is provided, and the vibration isolation support and the dampers are optimally configured. According to the double-control structure and the design method, the vibration influence of the subway can be effectively relieved, and the requirement for anti-seismic protection of the wood structure ancient building can be met.

The invention provides a rotor, a motor, a compressor, an air conditioner and a vehicle. The rotor comprises: a rotor iron core, wherein the rotor iron core is provided with a plurality of magnet grooves; permanent magnets arranged in the magnet grooves; and a first through hole formed in the rotor core, wherein the first through hole is close to one side of the outer contour line of the rotor core, and the first through hole is located between the outer contour line of the rotor core and the magnet grooves, the ratio of the minimum distance L1 from the first through hole to the magnet groovesto the thickness hm of the permanent magnets is larger than or equal to 1 and smaller than or equal to 3. According to the rotor provided by the invention, the use amount of the permanent magnets canbe increased to the maximum extent, the purpose of improving the magnetic load is achieved, the number of the magnets is increased, the built-in depths of the magnets are increased, and the copper loss and the magnet eddy current loss are reduced, so that the motor efficiency is improved, the q-axis inductance is reduced, and the requirements of high-rotating-speed operation and low-noise can bemet.

The invention discloses a charging platform used for an intelligent tramcar, and belongs to the field of urban novel rail transit. The charging platform comprises a platform body, a main rail, a passenger platform and a charging station mechanism, the main rail comprises two main lines, the two main lines are both located on the platform body, the passenger platform is located on the platform body, the passenger platform is located between the two main lines, the charging station mechanism comprises a head charging station assembly, at least one middle charging station assembly and a tail charging station assembly which are arranged in sequence, the head charging station assembly comprises a head distribution line and two head charging stations, the middle charging station assembly comprises a middle distribution line and two middle charging stations, and the tail charging station assembly comprises two tail charging stations. The charging platform provided by the invention not only can meet the charging requirement of the intelligent tramcar, but also can greatly save the occupation of the charging stations on the rail and reduce the use cost.

The invention relates to a distributed electric heating load modeling system based on measured parameter identification and a modeling method thereof. The modeling method is characterized in that, theelectric heating system operation state time sequence data in the past period of time is acquired by constructing an electric heating load modeling system, and the initial parameters of the second-order model are simplified through the cloud computing system and the fitting electric heating load on the basis of actually measured time sequence data and historical data; the initial parameters are further corrected according to historical temperature database parameters; an electric heating load simplified second-order model is obtained. The electric heating load modeling basic principle for identifying the second-order differential equation through actual measurement parameters is determined. Meanwhile, a modeling method and a system architecture which can be implemented by a computer are provided. The invention can provide an accurate model for electric heating load. In this way, an actual simulation result is obtained, and the accuracy of the electric heating load model is improved.

The invention relates to a marine environment monitoring data management system, including a data processing platform based on cloud data processing, a data processing base station, a data acquisition equipment management server, a data acquisition terminal and a data communication network, and the data acquisition equipment management server passes through the data communication network. The data collection terminal and the data processing base station are connected to each other, and the data processing base station is connected to the data processing platform through a data communication network. There are several data collection terminals, and each data collection terminal is connected in parallel. On the one hand, the present invention can effectively meet the needs for the operation and management of various marine environment data collection equipment, and on the other hand, can effectively meet the needs of use for comprehensive processing and storage of data collected by marine environment data collection equipment. While improving the efficiency of marine environmental data management operations, it also effectively improves the flexibility and reliability of marine environmental data storage and management operations.

The invention discloses an intelligent submersible electric pump protecting control device, which comprises a single-chip microcomputer system part, a signal gathering unit, a drive circuit outputting unit, a display control unit, a remote monitoring output unit and a systematic power supply, wherein the signal gathering unit is connected with an input end of the single-chip microcomputer system part; the single-chip microcomputer part with power supplied by the systematic power supply is connected with the display control unit; an output end of the single-chip microcomputer part is connected with the drive circuit outputting unit; and the remote monitoring output unit is connected with the single-chip microcomputer part. According to the invention, the microcomputer technology is adopted, so that the intelligent submersible electric pump protecting control device is convenient to use, has good stability and can meet requirements on operation and management of medium and large submersible electric pumps.

The invention provides an underground sewage pretreatment system connected into a deep drainage tunnel, and belongs to the field of urban drainage. A water inlet unit in the system is used for being connected with a shallow drainage system; a lifting pump forebay in the lifting unit is connected with the water inlet unit, and a lifting pump is connected to a lifting pump water outlet pool through a pipeline; a low-position water outlet weir and a high-position water outlet weir are arranged at the outlet end of the lift pump water outlet tank and are switched by using a quick-closing switching gate; a treatment unit is used for filtering particulate matters in the sewage and introducing the pretreated sewage into the deep drainage tunnel through a water outlet unit; and an overflow pipe in an overflow lifting unit is connected with the water outlet unit through a first overflow gate, and when a downstream accident occurs, pretreated sewage is discharged through an overflow water outlet pipe by utilizing an overflow lifting pump. The underground sewage pretreatment system can still keep stable water yield under the condition that the water flow is large in rainy season and the like, is prevented from being flooded, and meets the normal operation working condition and various accident working conditions at the same time.

The invention discloses a ship traffic management system disaster recovery method supporting dual-homing protection. The method comprises the following steps: step 1, setting a VTS system front-end sensor; step 2, acquiring data of a front-end sensor; 3, front-end sensor data are processed and stored in the double VTS centers in real time; step 4, structural data storage and bidirectional synchronization between the double VTS centers are carried out; and step 5, the user terminal belongs to the double VTS centers. According to the method, different protection mechanisms are adopted for front-end sensor data and structured data, the front-end sensor data are transmitted back to double VTS centers in real time to be processed and stored, the structured data generated by each VTS center is synchronized to the other VTS center in real time after being stored, and then a user terminal is dual-attributed to the VTS center. Meanwhile, the double VTS centers serve as full-function full-jurisdiction service center redundancy for each other, so that the service of the VTS system is ensured not to be interrupted, and the integrity and continuous availability of data are ensured under the disaster condition, and the system has the characteristics of low cost, high real-time performance, high reliability, wide applicability and the like.

The invention discloses a data summarization method for vocational ability. The method comprises the following steps that: independently integrating collected vocational data from a transmission layer, a calculation layer and a storage layer, wherein integration comprises identity integration and data integration; in the transmission layer, carrying out pressure partial load on a network link outlet, and carrying out pressure partial load on user requests; in the calculation layer, integrating data through distributed distribution, layered caching and layering, and carrying out identity integration on users; and in the storage layer, carrying out hashed storage. The method is suitable for transmitting, calculating and storing large-scale concurrent data so as to realize the efficient summarization of a great quantity of employment data of each port.

The method for CDMA / GSM dual-mode mobile communication and the communication equipment belong to the field of wireless communication equipment manufacturing. The main CPU on the main printed circuit board decides to start the main communication module or the auxiliary communication module according to hardware detection and judgment or user menu selection, a) if there is no auxiliary communication module, the main CPU automatically starts the main communication module on the main printed circuit board; b) if the auxiliary communication module) is inserted into the device, the main CPU automatically prompts the user to select the expected communication mode through the keyboard or special switch, and starts the The selected communication module, the main CPU cooperates with the power switch, audio switch, antenna switch and connector, and the common parts and the selected working module enter the selected GSM or CDMA working mode.

The invention provides a remote monitoring type HDPE pipe multi-source electric heating fusion welding automatic control system and a method thereof. The system comprises a bearing base, a welding workbench, guiding slide rails, positioning clamps, a welding mechanism, a walking driving mechanism and a control system. The welding workbench is located right over the bearing base; the guiding sliderails are connected with the upper end face of the welding workbench and are distributed in parallel on the upper end face of the welding workbench; the positioning clamps and the welding mechanism are in sliding connection with the guiding slide rails through the walking driving mechanism; at least two positioning clamps are provided; the positioning clamps are symmetrically distributed on two sides of the welding mechanism and are coaxially distributed with the welding mechanism; and the control system is connected with the bearing base. The using method comprises two steps of equipment assembling and fusion welding operation. On the one hand, the requirement for efficient and high-precision fusion welding operation of an HDPE pipe can be effectively met; and on the other hand, multi-unit networking operation and remote control and monitoring capabilities are effectively met, so that the use flexibility and convenience of the system are further improved.