51results about How to "Flexible start" patented technology

The invention provides a composite technology for treatment of urban wastewater in a complete set of physical and chemical methods. When the urban wastewater flows into the system, large-particle impurities are basically removed through a grille, the wastewater is then rapidly mixed with a plurality of compound medical preparations and returning chemical sludge in a multi-point dosing mixer and then flows into an efficient complex coagulation-precipitation system for flocculation and precipitation, the supernate after precipitation flows into a multi-phase composite filter, and water is finally discharged after filtration, ion exchange and adsorption. The chemical sludge can be further used for processing building materials after stabilization, acidification, alkalization and chemical phosphorus recovery, thereby realizing the utilization of the sludge resource. The invention has the advantages of low requirements for the ambient temperature and flexible starting and operation. Compared with the complex process for advanced treatment with serial combination of the traditional secondary biological treatment, coagulation, precipitation and filtration, the invention shortens the overall treatment flow, and effectively reduces the infrastructure investment cost.

The invention relates to the technical field of network monitoring, and provides network type monitoring equipment and a monitoring method for cold-chain logistics cargo compartments. The invention uses a short-distance ad hoc network wireless communication technique, so that collectors can be flexibly started according to monitoring requirements, the positions of the collectors can be flexibly moved/the number of the collectors can be flexibly reduced according to the monitoring requirements, the compartment environment and loading and unloading processes during cold-chain transportation canbe monitored in the whole process, and the effectiveness and practicability of the monitoring are enhanced.

The invention discloses an electric main shaft of a turning and milling composite machine tool. The electric main shaft comprises a machine body, a shaft core, a rotor component and a stator component, and further comprises a brake oil cylinder, a first stop ring, a second stop ring, a spring and a fixed base, wherein the fixed base is fixed at the upper end of the machine body, and is encircled at the outer side of the shaft core; the brake oil cylinder comprises a cylinder body, and a piston mounted in the cylinder body and extending in the axial direction of the shaft core; the cylinder body is fixed with the fixed base; the first stop ring is positioned between the bottom surface of the piston and the top surface of the fixed base; the second stop ring is positioned between the bottom surface of the first stop ring and the top surface of the fixed base, is fixedly connected with the shaft core in the radial direction, and is laminated with the first stop ring; the spring is positioned in the fixed base, upwards extends outside from the top surface of the fixed base in the axial direction, and ejects the first stop ring; and a spiral cooling water runner is formed in the wall body of the machine body for filling cooling water to cool the machine body. Under the condition of not shortening the service life, the electric main shaft realizes high-power rotation and high rotating speed.

The invention discloses an application method of a four-wheel drive electric vehicle body. The application method of the four-wheel drive electric vehicle body is characterized by comprising a drive steering clutch and gear shifting integrated front axle, a drive clutch and gear shifting integrated rear axle, a front axle motor controller and a rear axle motor controller. The application method of the four-wheel drive electric vehicle body comprises the steps that the front axle motor controller is connected with the drive steering clutch and gear shifting integrated front axle; and the rear axle motor controller is connected with the drive clutch and gear shifting integrated rear axle. The four-wheel drive electric vehicle body can be singly and independently driven by the front axle or the rear axle; when the four-wheel drive electric vehicle body is driven by one driving axle, the driving of the other driving axle can be stopped and a driving motor for the driving axle is separated from a differential mechanism to realize an effect of saving electric energy; and the front axle and the rear axle can be also enabled to simultaneously drive to increase the vehicle power so that the passing performance of the vehicle under complicated road conditions are more excellent.

The invention provides a photovoltaic power station and hydropower station combined operation system. The system is established through the method which comprises the steps that first, the output feature of photovoltaic power generation is measured and analyzed; then the output feature of photovoltaic power generation and the power generation feature of a hydropower station are combined, and according to the water balance theory, the influence on a hydropower station downstream power station from established combined operation system is analyzed; the influence on a power grid from the system is analyzed again; the scale of a photovoltaic power station connected into the hydropower station is computed again, and the operation situation of a water-turbine generator set of the hydropower station in the combined operation system is analyzed; and finally the combined operation system is formed. The invention further provides an operation method of the combined operation system. By setting a control method that the hydropower station is used for compensating the photovoltaic power station, an AGC and AVC control method and a water balance testing method, the combined operation system operates. The advantages of high adjusting capacity and high adjusting speed of the hydropower station are used, the photovoltaic power station with high volatility is subjected to compensation, and the combined operation system can provide power for a power grid stably.

The invention discloses an exhaust system of a motor boat engine, which comprises an exhaust pipe, an exhaust flange and a water jacket flange; the exhaust pipe comprises a plurality of exhaust manifolds, an exhaust main, a tail pipe and an exhaust pipe flange, wherein the exhaust manifolds and the exhaust main all adopt double layer structures, and a main pipe water jacket and a manifold water jacket are formed between the inner and outer layer pipe bodies; a water inlet connector is arranged at one end of the outer pipe of the main pipe, and is communicated with the main pipe water jacket, the other end of the water inlet connector is communicated with of the cooling water outlet opening of a generalized oil pan, and the water inlet connector is taken as the main cooling water inlet opening of the exhaust system; the water jacket flange is arranged at the outlet opening of the tail pipe, and a plurality of water outlet holes are arranged on the water jacket flange; the exhaust flange is provided with a cooling water jacket, a plurality of through-holes are arranged in the position where the exhaust pipe flange corresponds to the cooling water jacket; an water inlet hole is arranged in the cooling water jacket, and communicates with the cooling water channel of the engine. The exhaust system has the advantages that the surface temperature of the exhaust pipe of the motor boat engine can be effectively reduced, the thermal protection shield of the exhaust pipe can be eliminated, and at the same time, the cabin temperature and the exhaust gas temperature are reduced, thereby guaranteeing the high reliability of the entire exhaust system.

The invention discloses a power supply enable circuit. The power supply enable circuit comprises a multi-input nand gate and a delaying circuit, wherein the input end of the multi-input nand gate is connected with multiple channels of activation signals; the input end of the delaying circuit is connected to one path of the activation signals; and the output end of the delaying circuit is wired-andwith the output end of the multi-input nand gate and then is connected to the enable input end of a controlled power supply circuit. According to the power supply enable circuit disclosed by the invention, when any path of the multi-channel activation signals is logic 0, the power supply circuit is activated by the circuit and thereby a main system of a corresponding electronic device is activated, and while one path of activation signal connected to the delaying circuit can control the power supply circuit to reset through the circuit. In general, a keying signal is simultaneously connectedto the nand gate and the delaying reset circuit, and the others include but not limited to: a power supply lock signal outputted by a singlechip microcomputer and an external power supply effective locking signal. The system can provide a flexible single-key power starting function and resetting function, and the structure is simple and is easy to integrate, so that the power-supply efficiency ofthe system is improved.

The invention discloses a bi-energy pneumatic submersible pump for a mine. A motor seal chamber is formed between a motor and a variable speed transmission device. An output end seal chamber is formed between a water pump and the variable speed transmission device. A variable speed seal chamber is formed between a motor seal chamber and the output end seal chamber. The output shaft of the motor is the input shaft of the variable speed transmission device. The output shaft of the variable speed transmission device is the power shaft of the water pump. By the above method, the bi-energy pneumatic submersible pump for the mine is strong in adaptability. Therefore, the bi-energy pneumatic submersible pump for the mine can be designed by matching a speed reducer and a speeder between two categories of pneumatic motors and the water pump, so that requirements of high flow and high-lift dewatering pump are thoroughly resolved under poor working conditions of an environment, a flammable and explosive environment and a moist environment. The bi-energy pneumatic submersible pump for the mine has the advantages of being large in bi-energy driving torque, high in anti-impact properties and mechanical efficiency, and flexible to start. Further, according to the bi-energy pneumatic submersible pump for the mine, water draining can be achieved when the bi-energy pneumatic submersible pump starts under low pressure, water pump performance curve is flat, and operation under requirements of high flow and high lift can be achieved.

The invention discloses a four-drive traveling control valve, an open type hydraulic system equipped with the same as well as a traveling machine, and belongs to the technical field of aerial work platforms. Balance valves, a shuttle valve, flow distributing and collecting valves, a pressure reducing valve, a one-way throttle valve, check valves, a two-position three-way solenoid valve and damper valves are integrated in the traveling control valve. Besides adoption of an open type variable pump used for providing power for a traveling system, power can be provided for other actions such as rotary table slewing, arm support stretching and retracting, arm support amplitude variation and the like by increasing the number of plates of a proportional valve; the traveling control valve has high integration level, pipeline connection is covneint and simple, strong drive force is provided by motor drive, synchronous drive speed of four traveling motors can be realized, the requirement for performance of the aerial work platforms is met effectively, and a vehicle turns flexibly; the vehicle has good start and brake performance and is applicable to a downhill condition (a negative loading condition); and shift between fast gears and slow gears can be realized for the vehicle.

The invention relates to a soft seal gate valve, which comprises a valve body, a gate disc vertically moving along gate disc slideways at the two sides in the valve body and a valve rod which operates the gate disc to vertically move to start and stop; the two sides of the gate disc are provided with gate disc sliding grooves sliding on the gate disc slideways; the contact parts between the gate disc sliding grooves and the gate disc slideways are provided with pressure protection grooves used for relieving liquid pressure; the gate disc is formed by coating a layer of rubber material on the outer surface of a casting substrate; the inner wall and the outer surface of the valve body are sprayed with a non-toxic odourless resin (RAL7040) powder coating layer; and three plane seals are adopted between the lower part of the gate disc and a runner of the valve body for contact. In the soft seal gate valve, a layer of rubber is used for coating the gate disc and the inner wall of the valve body is sprayed with the non-toxic resin powder coating layer to thoroughly prevent the contact of liquid and metal and secondary pollution. The valve has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance and high tensile strength, is safer in application and flexibility in starting. Moreover, water flow can be completely cut off by the three seals to ensure the service life of the valve.

The invention provides a 1000T pure-electric three-head tractor. The 1000T pure-electric three-head tractor comprises an upper layer guide rail unit, a lower layer guide rail unit, a roller frame, a first drawing head, a second drawing head and an automatic interruption saw; the middle part of the upper layer guide rail unit is provided with a first rack; the middle part of the lower layer guide rail unit is provided with a second rack; the first drawing head comprises a first drawing vehicle, a first driving gear and a first servo motor, wherein the first driving gear is arranged inside the first drawing vehicle and is engaged with the first rack; the first servo motor is reversely arranged at the bottom of the first drawing vehicle and is in transmission connection with the first drivinggear; the second drawing head comprises a second drawing vehicle, a second driving gear and a second servo motor, wherein the second driving gear is arranged inside the second drawing vehicle and isengaged with the second rack; and the second servo motor is reversely arranged at the top of the second drawing vehicle and is in transmission connection with the second driving gear. The 1000T pure-electric three-head tractor provided by the invention has the advantages of extremely high drawing speed, flexible start and braking, small inertia, relatively low running noise, stable performances, low fault rate and the like.

The invention is a composite bed type low range circulating fluid bed boiler. A tower structure is used; multiple layers of fluid bed combustion chambers are installed along the height of a furnace chamber; the combustion chambers are internally provided with embedded pipe heating surfaces; each layer of combustion chambers can independently run; and low fluid wind speed is used for reducing abrasion of flame retardant coating and heating surface and reducing the operation power consumption of the boiler. A reheater, a superheater and a coal economizer are respectively installed inside the furnace chamber. The upper part of the outlet of the boiler furnace chamber is provided with a horizontal air preheater, and a low-temperature gas-solid cyclone separator is installed at the rear of the horizontal air preheater; fly ash matters separated are fed in a return conveyor of fly ash matters through a ash bucket and feed legs thereof, and are then fed in the fluid bed combustion chambers so as to form circulating combustion of fly ash. The fly ash matters separated from the low-temperature cyclone separator is very low, and the problems of reburning scorification and blockage of feeding material cannot occur, thereby greatly improving the reliability of fly ash circulating system.

The invention discloses a method and a device for smelting molten salt during aluminum oxide production. According to the invention, the solid molten salt at a normal temperature is introduced into a molten salt storage tank, a steam heater is arranged in the molten salt storage tank, the steam with a pressure of 3-4MPa and a temperature of 250-270 DEG C is introduced into the steam heater, in order to smelt the heated molten salt by heating to higher than 142 DEG C, and then the smelted molten salt is pumped into the next process. The method and the device of the invention have the following advantages: the smelting conditions of the molten salt can be satisfied, the system is simple, the existing apparatuses of aluminum oxide plant can be fully used, the apparatus investment is reduced, the power supply is reduced, the reliability is high, the service life is long, the operation and management are convenient, the maintenance is easy and the like.

The invention provides a power grid coordination control method based on hydroelectric power-photoelectricity complementation. The method comprises the following steps of: predicting the photoelectricdaily output of photovoltaic power stations around a hydropower station, and obtaining a first photovoltaic daily output curve; obtaining a rated daily output curve of the hydropower station; establishing a hydroelectric power-photoelectricity complementation daily scheduling model, determining an objective function, a constraint condition, a first photovoltaic daily output curve and a rated daily output curve of the power station of the model, and obtaining a first hydroelectric power-photoelectricity complementation total output curve through the hydroelectric power-photoelectricity complementation daily scheduling model; obtaining the actual photoelectric daily output of the photovoltaic power station, and obtaining a second photovoltaic daily output curve; and generating a second hydroelectric power-photoelectricity complementary total output curve through the hydroelectric power-photoelectricity complementation daily scheduling model on the basis of the rated daily output curve of the hydropower station and the second photovoltaic daily output curve, and iteratively adjusting the effective output of the hydropower station according to the first hydroelectric power-photoelectricity complementation total output curve, so as to make the shape of the second hydroelectric power-photoelectricity complementation total output curve to be consistent with that of the first hydroelectric power-photoelectricity complementation total output curve.

The invention discloses an efficient heating mechanical hand of a hot header. The mechanical hand comprises a conveying rotating disc, a mechanical arm heating rotating disc and a reclaiming rotating disc which are adjacent in sequence, the diameter of the mechanical arm heating rotating disc is larger than that of the conveying rotating disc and that of the reclaiming rotating disc, and the conveying rotating disc, the mechanical arm heating rotating disc and the reclaiming rotating disc are each provided with multiple workpiece clamps. The efficient heating mechanical hand has the advantages that the device operating all the time in the working process is designed by means of the rotational inertia difference between the big and small wheel discs. The function is changed by changing the structure of the mechanical hand, the efficient heating mechanical hand has the advantages that the device and a traditional mechanical arm are effectively combined together and are combined with the structure of the two small rotating discs, the characteristics that the small rotating discs are small in rotational inertia and flexible to start or stop are fully used to complete the feeding and reclaiming actions on the small rotating discs, the problem of low efficiency in the existing hot heading technology is solved, and no idle stroke exists in work.

The invention relates to the computer application technology field, and especially relates to a network resource data acquisition system and a realization method thereof. The system consists of a resource configuration management module, a task configuration management module, a data management module, and a monitoring management module. The method comprises the following steps: adding resource information in a system database; configuring network acquisition rules; testing the acquisition rules; issuing resource configuration information; adding task information, selecting resource names, and setting a task running period and the task running start time; and starting task running. With the method, worker in enterprises can quickly create a network data acquisition resource, flexibly configure the task acquisition time and the running period, and monitor and query acquired data. Therefore, the method is suitable for acquiring all types of network resource data for enterprises.

The invention discloses a BEST small machine system started in multiple modes and an operation method of the BEST small machine system. The BEST small machine system comprises a booster pump, a gearbox, a water feeding pump, a BEST small machine, a high-speed synchronous motor and a converter which are sequentially connected. The water feeding pump, the BEST small machine and the high-speed synchronous motor are connected through the same shaft system. The booster pump is connected with the water feeding pump through the gearbox, and the converter is respectively connected with an auxiliary power 10kV busbar and the high-speed synchronous motor. The converter and the high-speed synchronous motor are utilized, the advantages of a steam-driven BEST small machine driving water feeding pump and an electric water feeding pump are combined, the unit starting time is shortened, the auxiliary power consumption is reduced, and meanwhile, the efficiency of the BEST small machine is obviously improved.