5397results about How to "Guaranteed normal operation" patented technology

The invention proposes a system simulation method for connecting large-scale wind power into a power grid in a centralization way and an effective equivalent mode of a high-capacity wind power station. Based on the synchronization operating characteristics of the large-scale wind power, the invention makes the large-scale wind power synchronization simulation analysis principle under the comprehensive consideration of the influences of the wind resource characteristics of wind power generation, the dynamic response characteristics of a wind driven generator and the differentiation characteristics of different types and different control modes of various wind driven generators and the like; therefore, the invention constructs the complete analytical framework and flows of the system simulation assessment with the large-scale wind power being connected into the power grid. The simulation analysis result shows that the system simulation method can comprehensively, objectively and accurately assess the impact and the safety bottleneck to the stable running of a power system caused by wind power synchronization after the base synchronization of the large-scale wind power due to the affection to the dynamic response characteristics of the power system by the differentiation of the types and the response characteristics of various wind driven generators and the wind resource characteristics. Therefore, the method is beneficial for the scheduling and operating staff to accurately grasp the affection to the system characteristics by the connection of the large-scale wind power and the law of the connection of the large-scale wind power, and has significant meaning for instructing and making the corresponding precautionary and improved measure and ensuring the normal running of the system after the connection of wind power.

The invention relates to a desktop 3D-printing forming device comprising a base plate, a machine frame and connection blocks. The machine frame is a bottomless rectangular frame and is fixed on the base plate; vertex angles of the machine frame are provided with the connection blocks, adjacent connection blocks are connected with Y-direction guide rails, and transmission systems are arranged above the connection blocks and between adjacent connection blocks; the end of one transmission system at one side is connected to one end of a step motor output shaft, and the other end of the step motor output shaft is connected to the end of the other transmission system at the other side; the Y-direction guide rails which are on two opposite sides are provided with slide blocks, and the top end of the Y-direction guide rails which are on two opposite sides are connected with the transmission systems; X-direction guide rails are arranged between the slide blocks which are two opposite sides, and printing systems are arranged between the X-direction guide rails; the printing systems are connected with wire feeders; the base plate is vertically provided with a linear motor, and output shaft is a Z-direction guide rail; the Z-direction guide rail is connected with one end of an installing beam; and a heating work plate is arranged on the top of another end of the installing beam, and is under the printing systems. Moulding precision is high, processing speed is fast, technology is simple, cost is low, and the desktop 3D-printing forming device can be widely applied in household and the field of teaching.

The invention provides a guiding centralizer mechanism for a single-pile foundation of an offshore wind turbine. The guiding centralizer mechanism comprises a frame, a clamping and guiding mechanism, a horizontal adjusting mechanism and a vertical adjusting mechanism, wherein the frame is fixed onto a workboat, the horizontal adjusting mechanism and the vertical adjusting mechanism are arranged on the frame, and the clamping and guiding mechanism is connected with the vertical adjusting mechanism. The guiding centralizer mechanism is driven and controlled by a hydraulic cylinder and functions in clamping, guiding and centralizing the single-pile foundation of the offshore wind turbine, the pile foundation can be vertically piled into a seabed by a pile hammer during piling and prevented from deflecting during piling, normal running of the wind turbine is ensured, and wind generation efficiency is improved.

The invention discloses a system of inductive heating continuous magnesium smelting and a continuous magnesium smelting technique. The system comprises a continuous feeding device, an inductive heating reaction chamber, a magnesium steam condensing device and a continuous discharging device; wherein the feeding device consists of a feeding housing and a spiral feeding mechanism, the reaction chamber comprises an inductive heating winding, a heating element, a clapboard with holes and a slag cooling device, the condensing device consists of a mesh clapboard, a dust deposition chamber, the magnesium steam condensing chamber, the continuous discharging device comprises spiral slag discharging mechanism and slag housing. The continuous magnesium smelting technique consists of the processes of the continuous feeding of reacting burden into the reaction chamber, the continuous condensation of the magnesium steam and the discharge of liquid magnesium, and also comprises steps of the continuous feeding of reacting slag into the slag housing and slag discharging. The invention has high heat energy utilization rate, and can realize the low cost continuous production of the metal magnesium.

The embodiment of the invention discloses a refrigeration control method and device and an air conditioner and relates to the technical field of temperature control. It can be guaranteed that on the basis of reliability of the air conditioner, low-temperature refrigeration of the air conditioner is achieved. According to the specific scheme, the current value of the outdoor environment temperature is acquired, when the current value of the outdoor environment temperature is higher than a first preset temperature and lower than a second preset temperature, a compressor of the air conditioner is controlled to run under the frequency within a first running frequency interval, and an outdoor unit fan of the air conditioner is controlled to run at a rotating speed within a first rotating speed interval; and the frequency lower limit value of the first running frequency interval and the rotating speed upper limit value of the first rotating speed interval are running frequency of the compressor and the rotating speed of the outdoor unit fan respectively when the air conditioner performs refrigeration at the first preset temperature and the compression ratio of the compressor is at least the recommended compression ratio. The refrigeration control method and device are used in the temperature adjusting process of the air conditioner.

The invention relates to a technology for reducing waste incineration fly ash via water logging pretreatment, and the technology is particularly suitable for the treatment of waste incineration fly ash with salt content higher than 20%. A water logging dechlorination manner is used for treating waste incineration fly ash; by prolonging the logging time, the water consumption is greatly reduced, a subsequent wastewater treatment process is simplified at the same time and a soluble salt resource is recycled; before fly ash enters into a furnace, most of heavy metals and chlorine salts are removed, a matrix of fly ash is purified, and by virtue of existing incineration equipment of waste incineration power plants, pollutants such as dioxin are thoroughly degraded, so that the overall normal running of a waste incineration line is ensured and the harmless and reduction treatment of waste incineration fly ash is realized. The technology has a characteristic of correct in-situ treatment, and is simple in process and low in investment and operation costs; by gathering most of heavy metals and salts in heavy metal plaster and gathering little of the two in secondary fly ash, the reduction of waste incineration fly ash is realized, and then a favorable foundation is laid for the subsequent further treatment or resource utilization.

The invention is a method of monitoring a filter for absorbing paint particles produced during spray painting with a spray gun in a paint spray booth coupled to an exhaust pump, the method includes the steps of: 1) installing a filter between the booth and exhaust pump; 2) determining the initial pressure drop across a filter prior to use of the spray booth; 3) determining the maximum allowable pressure drop for the filter prior to the requirement that spraying activities must be terminated by adding the initial pressure drop of the filter to the maximum allowable increase in pressure drop across the filter before the of spraying activities must be terminated; 4) providing a warning when a first portion of the maximum allowable pressure drop is reached; and 5) preventing the use of the spray gun when a second portion, greater than the first portion, of the maximum allowable pressure drop is reached.

The invention discloses a power supply plugging system. The system comprises a shell (1) and a walking cavity (2) arranged inside the shell (1). The left side of the walking cavity (2) is communicated with a plug sliding cavity (3). A power supply base (4) is arranged on the right side of the walking cavity (2). A power supply socket (41) is arranged in the power supply base (4). A plug device of electrical equipment is arranged in a sliding manner in the plug sliding cavity (3). The plug device includes a plug body (5), a holding block (53) arranged on the plug body (5), a square lock slot (51) arranged on the plug body (5), and an electrical connector (52) arranged on the right side face of the plug body (5). The electrical connector (52) is used for being connected with the power supply socket (41) to supply power. The edge of the right side face of the plug body (5) is provided with a guide slope (55).

The invention discloses an automatic charging system based on a snakelike-simulated mechanical arm. The automatic charging system comprises the snakelike-simulated mechanical arm, a charging device and a control system, and further comprises all control and execution modules, the control and execution modules are mutually matched, and whether to-be-charged vehicles exist or not can be automatically induced through a vehicle induction module; a charging-port pre-alignment module identifies charging ports through installed sensors, and general orientations of the charging ports are preliminarilycalculated; a main control module of a microcomputer is prepared, and is installed in a charging pile base, and the main control module controls the mechanical arm to clamp charging guns to move in the pre-alignment direction; an accurate alignment module of a snakehead-simulated joint accurately determines positions of the charging ports through the corresponding sensors and charges the to-be-charged vehicles. According to the automatic charging system based on the snakelike-simulated mechanical arm, vehicle using experiences of new-energy vehicles and automatic guide vehicles are greatly improved, the automatic charging requirements of automatic sites such as automatic-parking-place vehicles are met, a complete automatic parking and automatic inter-vehicle service system is formed, thelabor cost is greatly reduced, and the running efficiency is improved.

A hydraulic system includes a variable displacement hydraulic pump connectable to a power source, a hydraulic motor, a fluid circuit, a pump displacement control, and a controller. The pump has an inlet for receiving fluid, an outlet for discharging pressurized fluid, and a pump displacement input. The motor has an inlet for receiving pressurized fluid and an outlet for discharging spent fluid. The fluid circuit includes a supply conduit for conducting fluid discharged by the pump to the motor and a return conduit for returning fluid discharged by the motor to the pump. The pump displacement control cooperates with the pump displacement input to vary pump displacement. The controller communicates with the pump displacement control to control the pump output such that the motor is driven at a constant speed to thereby drive a generator connected to the motor at a constant speed despite speed fluctuations of the power source.

Electronic control for a hydraulic system driving an auxiliary power source is provided, with specific application as a system for controlling the operation of a hydraulically driven AC generator. The system may includes a hydraulic pump, a hydraulic motor drivably connected to the generator, a fluid circuit for circulating fluid from the pump to the motor and back. The fluid circuit may contain a bypass conduit to bypass the motor. The system also includes a proportional servo control valve assembly for controlling the fluid circuits and a control circuit for controlling the proportional control valve assembly. The control system can be capable of controlling the flow of hydraulic fluid to the motor powering the electrical or mechanical system. Sensors for measuring the operating parameters of the system and an operator interface module can influence the operation of the system.

The invention relates to a fire-resisting paint and its use, wherein the fireproofing coating composition comprises composite film forming resin 15-30 wt. portions, expansion combustion inhibitor 27-40 wt. portions, flame-proof insulating material 2-15 wt. portions, fabric filling material 1-5 wt. portions, coating material solvent 30-45 wt. portions, wherein the particle mean size of the solid state components is 1-90 micrometer. The fireproofing paint can be applied to cable coating which can substantially extend the fire-resistant period for the cable.

The invention provides a private block chain block building method for a Byzantine fault tolerant algorithm of quartic communication. The method comprises: (1) all nodes carrying out hash mapping on the received transactions to obtain a bitarray sent to all remaining nodes, and each node carrying out 2/3 AND operation on the received bitarray to obtain a bitarray corresponding to a transaction intersection of over 2/3 nodes; (2) a block building node obtaining a transaction set according to the bitarray for building a block, and submitting the block to the remaining nodes; (3) a node receiving the block completing verification by comparing self bitarray with the transaction set in the block, and sending a digital signature of the verification result to all the remaining nodes after verification; and (4) forwarding all vote signatures received by all nodes on the block in second vote so that each node receives votes of all the nodes, and collecting statistics on the votes to obtain a final result, thus determining whether to accept the block.

The invention discloses a cloud desktop system. A user terminal is provided with a system disc, wherein the system disc is stored with a system distribution file which includes a desktop operating system, and the desktop operating system and a loud desktop client terminal are arranged on the user terminal; the cloud desktop client terminal sends a linking request including identification information of the user terminal to a cloud server after the desktop operating system of the user terminal is launched; the cloud server is provided with a management terminal and a network system disc; the management terminal synchronizes the system distribution file including the desktop operating system on the system disc of the registered user terminal to the network system disc corresponding to the user terminal according to a first set time interval. According to the cloud desktop system, the operating system is arranged on a local terminal, so that data operation can be carried out on the user terminal by users, pressure of the cloud server can be relieved, and offline data operation is supported. The cloud desktop system has the advantages of being stable in work, high in efficiency, good in security, and capable of supporting users of different requirements to choose and use.