112results about How to "Reduce self-consumption" patented technology

The invention provides a biomass energy IGCC technology which is characterized in that the technology comprises the following steps that: (1) the biomass raw material is gasified to be converted into the combustible gas which is dedusted and decoked as well as purified and is sent to a gas internal-combustion engine to generate electricity; (2) the biomass raw material or the clinker generated in the gasification and power generation process in the step 1 or the mixture of the two is sent to a steam boiler to be burnt in order to generate the superheated steam; the exhaust heat of the gas internal-combustion engine of the step 1 is inlet to an exhaust-heat boiler to generate the superheated steam; (3) the superheated steam generated by the steam boiler and the exhaust-heat boiler of the step 2 is sent to a turbonator set. The biomass energy IGCC technology takes full advantage of the heat energy and the product generated by each processing step in the biomass energy gasification and power generation process and generates electricity circularly, thereby greatly raising the power generation efficiency, taking full advantage of waste materials and lowering the running cost. The invention also discloses a power generation system for realizing the biomass energy IGCC technology.

The invention discloses an implanted physiological data measurement device. In the device, a temperature measurement module measures a thermistor which is connected with a bridge bleeder circuit, and transmits a voltage signal to a signal processing module; a pulse measurement module senses external pressure and transmits an electric signal to the signal processing module; the signal processing module calculates a temperature value and a time value of pulse per minute, and transmits average values to a RFID (radio frequency identification) module after the average values are calculated; and the RFID module transmits data of the temperature value and the pulse rate to the outside of the body of an animal, and receives a data measurement command from the outside of the body of the animal so as to control dormancy and awakening of each module. According to the device, the temperature and pulse data of raised livestock can be acquired with low cost, the measurement error is reduced, and the service life is prolonged.

The invention provides a heat capacity heat exchange device which is composed of a first shell, a second shell, heat exchange media and heat capacity media. The first shell and the second shell are internally and externally arranged, the heat capacity media are filled in the full or partial space between the first shell and the second shell, the external energy is transmitted to the heat exchange media through the heat capacity media, and heat collection of the heat exchange device is completed. The heat capacity heat exchange device has the wide use range, can be applied to the solar energy utilized field of a groove type photo-heat heat collector or a fresnel array photo-heat heat collector or a disc type photo-heat heat collector or a tower type photo-heat heat collector, is particularly applied to a direct steam generation, conduction oil and melting salt system, can also be applied to boiler heating and the application field of the heat input and the heat output of a heat storage system, and well solves the technical problem which is hard to solve by a plurality of conventional technologies in the corresponding application field.

The invention discloses a clean production method of natural gas, which is composed of the following steps: (1) addition of an ice inhibitor: adding an ice inhibitor liquid or the ice inhibitor into natural gas or / and a natural gas flow channel so that the ice inhibitor liquid or the ice inhibitor is contacted or mixed with the natural gas or / and gas-phase water, liquid-phase water, ice or / and natural gas hydrates in the natural gas flow channel to form sewage containing the ice inhibitor; and (2) ventilation for water removal: evaporating the water in the ice inhibitor sewage in a ventilating manner and recycling the ice inhibitor liquid or the ice inhibitor from the ice inhibitor sewage. The method solves the problem of influence on natural gas exploitation and production due to natural hydrates or ice, can solve the problem of environment pollution and energy consumption during the natural gas exploitation and production, can eliminate safety risk in the natural gas exploitation and production, can reduce fixed investment, cost and energy consumption in the natural gas exploitation and production, is easy to carry out, is safe and reliable, is wide in application and is easy to popularize, and has significant economic benefit, environment protective benefit and safety benefit.

The invention discloses a solar energy photovoltaic double-shaft array linkage tracking power generation device, and relates to the power generation device. The solar energy photovoltaic double-shaft array linkage tracking power generation device comprises an hour axle solar tracker (1) and a season axle solar tracker (2). The hour axle solar tracker (1) is arranged on the season axle solar tracker (2). The hour axle solar tracker (1) is arranged with one end facing towards the north and the other end facing towards the south. A plurality of photovoltaic modules (11) are arranged on a rotary support (12) and form an uniform flat surface. Two ends of the rotary support (12) are arranged on the season axle solar tracker (2) through a first bearing block (13) and a second bearing block (14), and the second bearing block (14) of one end of the rotary support (12) is connected with a first turbine worm variable box (15). A plurality of photovoltaic modules arrays are rotated by a plurality of actuators, structures of the solar trackers are simplified, power consumption of a system motor is reduced, maintaining workload is small, wind-proof performance is good, and land utilization rate is high.

The invention discloses a temperature protection circuit for lithium ion battery charging and discharging, which comprises a battery charging and discharging circuit composed of a switch metal oxide conductor (MOS) tube Q4, a switch MOS tube Q1, a switch MOS tube Q2 and a peripheral circuit and a chip U1. The control end Q4-4 of the battery charging and discharging circuit is connected with a charging temperature control circuit unit and a discharging over temperature protection unit. The discharging over temperature protection unit is mainly composed of the U1, the Q1, the Q2 and a temperature protector TS. The charging temperature control circuit unit comprises a reference voltage supply circuit, a temperature sampling circuit, a voltage comparator, a Q5 and a Q6, wherein the voltage comparator is composed of a U2 and the peripheral circuit. The U2 is composed of U2A and U2B, and the reference voltage supply circuit is respectively composed of an R20, an R21, an R22 and an R23. The temperature sampling circuit is composed of an R19 and a temperature sensor TH1. The output end of the voltage comparator is connected with the Q5 connected with the Q6 in series, and the output end of the Q6 is connected with the control end Q4-4. The temperature protection circuit for lithium ion battery charging and discharging is low in self power consumption, high in reliability and capable of controlling charging and discharging temperature.

The invention relates to the field of power machinery, in particular to an internal combustion engine with rotor pistons. The internal combustion engine is characterized in that 1, the two pistons which are mounted oppositely intermittently rotate around a center shaft in a cylindrical cylinder, air suction, compression, explosion and exhaust stoke are completed, energy of exploded gas acts on side surfaces of the pistons, output shafts are directly pushed to rotate, and the problem of energy dissipation of an engine with a reciprocating piston due to change of an included angle between a crank and a connecting rod is avoided; 2, compared with an engine with a reciprocating piston and a triangular rotor, the internal combustion engine does not have a reciprocating part or a movable valve or components thereof, does not realize eccentric movement, accordingly does not cause structural vibration, and is low in self consumption; 3, compared with a triangular rotor engine adopting a linear sealing component, the engine realizes surface sealing, does not need parts such as sealing strips and the like which are difficult in processing and easy to be worn, and is fine in sealing performance and high in reliability; 4, abrasion rate is low, abrasion of a main portion only depends on the abrasion degree of a bearing; and 5, the total engine is simple and compact in structure and high in thermal efficiency.

A device with a griddle and a process for generating power by efficiently recycling sinter waste heat relate to the technical field of waste heat power generation. The device comprises a sinter cooling system, a waste heat power generation system and a smoke system. The sinter cooling system and the waste heat circulation power generation system are connected through the smoke system to form a loop. The process includes 1) sinter cooling, 2) the smoke system and 3) waste heat power generation. The device and the technological process for waste heat power generation have the advantages of completely utilizing waste heat discharged in the sinter cooling process, obviously increasing power generation quantity, obviously reducing system self power utilization rate and being remarkable in energy-saving effect.

The invention relates to a portable moving charging power which includes a built-in battery and a voltage booster circuit connected in series with the built-in battery; the built-in battery is used for providing a DC circuit and a DC voltage. The invention also includes a power manager connected on the built-in battery in parallel and an alarm indicator connected with the power manager; the DC voltage provided by the built-in battery is outputted under the control of the power manager and through the adjustment of the voltage booster circuit; the power manager can start the alarm indicator when the electricity quantity of the built-in battery is too low or the built-in battery is short or out of electric current; the power manager can charge for an externally connected device when the electricity quantity of the built-in battery is normal. The built-in battery of the invention realizes the short-circuit / overcharge protection on the voltage booster circuit through the arrangement of the power manager, provides output circuit limitation, realizes the intelligent management of the power and provides a higher charging compatibility.

The present invention relates to a cane-field weed-killing agent. Its effective component composition includes (by wt%) 5-25% of diuron, 5-20% of dimethyltetrachlorosodium and 10-50% of ametryn. Besides, said invention also provides its application method.

The invention relates to an energy saver for base station machine room air conditioners. The invention solves the problems of high power consumption and short service life in the existing air conditioner. The energy saver comprises a shell and an automatic control loop assembled in the shell. The invention has the technical points that a temperature acquisition control unit is arranged in the automatic control loop, and a room temperature sensor and a return air inlet temperature sensor and an air outlet temperature sensor transmit the acquired temperature analog values in three ways: the temperature analog value in the first way is converted into a digital signal through an analog-to-digital conversion chip; the temperature analog value in the second way is converted into a voltage signal through a current / voltage conversion chip of an operating mode control unit; and the temperature analog value in the third way is converted into a voltage value through a current sensor in a fault detection and recovery unit, and a pulse driver in a temperature compensation unit emits a pulse signal to drive the semiconductor refrigerator to work, thereby carrying out real-time dynamic compensation control. Due to the reasonable structural design, the invention can automatically adapt to the change of the operating state of the air conditioner, quickly display the fault, realize automatic fault recovery, obviously prolong the service life of the air conditioner and enhance the energy saving effect.

The invention belongs to the technical field of wind power generation, and particularly relates to a yaw control method for a wind generating set. The yaw control method for the wind generating set comprises the following steps that different wind direction judgment modules are selected according to the period T (T=T0+T1), the contrastive analysis is conducted on the yaw frequency N# counted in different wind direction sections, and the yaw error angle delta theta is dynamically given in combination with the wind speed judgment section, and effective unit yaw control is achieved. The yaw control method has the beneficial effects that on the basis of existing yaw hardware equipment, the time lag control over a unit yaw wind countering system can be achieved; especially when wind direction fluctuation is little, the yaw wind countering angle is increased by dynamically giving the yaw error angle under the weak wind condition, the work frequency of the yaw system under weak wind is reduced, and the auxiliary power supply of the unit is reduced; and similarly, the yaw wind countering angle is reduced by dynamically giving the yaw error angle under the heavy wind condition, the yaw wind countering capability is improved, more wind energy is captured, and the power generating amount of the unit is increased.

The invention discloses a reactive compensation intelligent monitoring management system comprising a signal acquisition module (1), wherein the signal output end of the signal acquisition module (1) is connected with the signal input end of a signal processing module (2); and the signal output end of the signal processing module (2) is connected with the signal input end of an execution module (3). The invention has the remarkable benefits that a power grid achieves the ideal balanced compensation effect by reasonable switching of a capacitor; the power self consumption of a compensation device is reduced to be minimized by inrush current-free input of the capacitor; and the health condition of the system equipment can be monitored and judged in real time and the effect of reactive compensation can be known.

The invention provides a device system and method for achieving carbon dioxide cyclic power generation through geothermal energy. The disclosed system comprises a liquid CO2 storage tank, a high-pressure pump / compressor, a geothermal energy CO2 energy storage device, a terrestrial heat production well, a steady flow adjuster, a turbine / piston expander, a power generator, a cooler and a CO2 compressor. The invention further discloses a method, in the method, low-pressure liquid CO2 fluid serves as a working medium, geothermal water and low-temperature CO2 fluid exchange heat with each other to form supercritical CO2 fluid different in temperature, pressure and energy density, then the equal-pressure supercritical CO2 fluid is achieved through adjustment of the steady flow adjuster, and then power generation is conducted. According to the device system and the method, heat energy in the geothermal water with the temperature ranging from 70 DEG C to 300 DEG C in the terrestrial heat production well is adopted for conducting energy storage on the liquid CO2, carbon dioxide cyclic power generation is achieved after tempering, the heat energy can be efficiently recycled, and high heat efficiency is improved; and energy in the terrestrial heat is effectively stored and utilized, and flexible adjustment and utilization of energy are achieved.

The invention discloses a solar energy power supply circuit for a wireless sensor network node. The solar energy power supply circuit comprises a solar cell panel, a charging protection circuit, a storage battery, a discharging protection circuit, a DC (direct current)-DC circuit and a load, and is characterized in that the solar cell panel supplies power for the storage battery through the charging protection circuit in a constant voltage mode; the discharging protection circuit is connected with the storage battery in series, and is provided with a reference voltage, when the output voltage of a reference end of the storage battery achieves or exceeds the reference voltage, the storage battery supplies power for the load, and when the output voltage of the reference end of the storage battery is lower than the reference voltage, the storage battery stops supplying power for the load, and discharging protection is carried out; and the DC-DC circuit is connected to the discharging protection circuit in series. The charging protection circuit and the discharging protection circuit of the solar energy power supply circuit have complete functions and simple structures and are low in self power consumption, and the solar energy power supply circuit for the wireless sensor network node has a wide application range.

A furnace type efficient recovery system for flue gas waste heat of cooled sinter comprises an air blower, a cooling furnace, a primary dust remover, an emergency blow-off valve, a waste heat boiler, a secondary dust remover, a draft fan and a chimney. An outlet of the air blower is communicated with a cooling air inlet on the lower portion of the cooling furnace. A flue gas outlet on the upper portion of the cooling furnace is communicated with the primary dust remover, the waste heat boiler, the secondary dust remover, the draft fan and the chimney through pipelines successively. The emergency blow-off valve is arranged on a pipeline between the primary dust remover and the waste heat boiler. A connection pipeline is arranged between the draft fan and the air blower. The furnace type efficient recovery system for flue gas waste heat of cooled sinter has the advantages that the sinter quality is improved, the sinter return rate is reduced, flue gas parameters are stable, the system own power consumption rate is reduced, and the energy-saving effect is apparent.

The invention discloses an antifeezing and anti-blocking method of a natural gas runner, which comprises the following steps: periodically adding antifreeze into the natural gas runner so as to reduce the dew point of the natural gas and the freezing point of the water in the natural gas runner, and prevent the water from freezing and blocking the natural gas runner. The invention can effectively solve the problems that the natural gas runner is frozen and blocked, mixed solid content formed by natural gas hydrate and ice block the natural gas runner, also can greatly reduce the dew point of the natural gas, cosmically simplify the productive process of the natural gas, particularly, cosmically simplify the natural gas ground surface gathering process, greatly reduce the cost of the natural gas production, energy consumption, gas self consumption, management working load, and the like, fundamentally eliminate methanol harm and pollution in the natural gas production, realize non alcoholization of the natural gas productive process, and has the advantages of easy implementation, safety and reliability, wide application, easy popularization and the like. The economic benefit, environmental protection benefit and safety benefit are remarkable.

The invention discloses a natural gas production method, which comprises following steps (1) a thermal insulation oil pipe is arranged in a gas well shaft sleeve or an oil pipe, and (2) natural gas is enabled to rise to a well opening through the thermal insulation oil pipe. When the natural production method is applied to natural gas production, natural energy can by fully used to produce natural gas, temperature of the well opening of the natural gas well can be remarkably improved, the problem that hydrate can affect production of natural gas is effectively resolved, production processes that natural gas is not heated and pressurized is achieved, heating of a heating furnace and pressurization concentration transportation of a compressor can be eliminated, and production cost and energy consumption of production of natural gas can be greatly reduced. The natural gas production method has the advantages of being easy to operate, safe, reliable and the like.

The invention discloses a wind turbine generator system optimal start control method. According to the method, an AR(p) model of a wind velocity series is established by utilizing a time series analysis method, a predicted value of a wind velocity in 10min in the future is obtained by utilizing a kalman filtering algorithm, and then an average wind velocity in first 10min and a predicted wind velocity in 10min are combined to be used as a basis of executing a fan starting action, so that power generation capacity after a fan is started is sufficiently ensured, unreasonable start-up of the fan in low-wind-velocity seasons is reduced, a service life of equipment is prolonged, an availability ratio of the equipment is improved, power self-consumption is reduced, and electric energy production is improved.

The invention relates to an active composition for preventing and eliminating resistant weeds, conventional weeds of the grass family and broadleaf weeds in a paddy field. The active composition contains metamifop and bispyribacsodium. The mass ratio of the two active ingredients is (0.5-1):(1-2). The active composition can be prepared into pesticide formulations, such as oil suspending agents, emulsion in water, water dispersible granules, wettable powder and the like. The weedicide composition has higher activity on resistant cockspur grass and broadleaf weeds. The weeding effect on conventional weeds is also obviously higher than single dosages. Simultaneously, the active composition has the advantages of enlarging a weeding spectrum, reducing use amount, increasing crop activity and the like.

The invention relates to an inclined single-shaft self-adaptive sun tracker for photovoltaic power generation. The inclined single-shaft self-adaptive sun tracker is characterized in that: a power output shaft of a speed reducer fixedly arranged on the top of a front upright is connected with the front end of a front shaft tube, the rear end of the front shaft tube is connected with the front part of a connecting shaft, and the rear part of the connecting shaft is fitted in the hole of a bearing pedestal and extended out of the bearing pedestal to be connected with a rear shaft tube; crossbeams are fixedly arranged on both sides of the front and the rear shaft tubes, and vertical beams are fitted on the crossbeams through heel blocks; the top of an A-shaped rear support is fixedly arranged on the bottom of the bearing pedestal; limit bars are symmetrically arranged on both sides of the outer surface of the bearing pedestal, and a limit block is arranged on the front part of the rear shaft tube; the axial central lines of the front and the rear shaft tubes are inclined at 20 to 35 degrees relative to the horizontal line; and the vertical central line of the rear support is perpendicular to the axial central lines of the front and the rear shaft tubes. The inclined single-shaft self-adaptive sun tracker has the advantages of small starting torque, high stability and high reliability, and greatly increases the generating capacity of a solar panel; all the main parts are made of high-quality steel products and undergo hot galvanizing and other processes, and thereby the service life and the corrosion resistance of the inclined single-shaft self-adaptive sun tracker are guaranteed.

The invention relates to a motor and a wind generating set. The motor comprises an active cooling loop and a passive cooling loop which are mutually isolated and both are communicated with an outsideenvironment, wherein the active cooling loop comprises intercommunicated cavities located at two axial ends of the motor, an air gap between a rotor and a stator of the motor, and a radial channel distributed along axial intervals of the stators, and a cooling device communicated with the outside environment is arranged in the active cooling loop; the passive cooling loop comprises an axial channel penetrating through the stator in an axial direction and an external surface of the motor. With the motor and the wind generating set provided by the invention, a problem of insufficient cooling ability of the passive cooling loop in limited layout space is solved, burden on the active cooling loop is reduced, power and self-consumption of the cooling device are reduced, consequently, volume andweight of the cooling device are reduced, and power generation efficiency of the whole machine is improved.

The invention relates to an aluminum-air fuel cell monomer structure, particularly to a liquid pipeline built-in compact type aluminum-air fuel cell monomer capable of achieving built-in liquid supply through a liquid pipeline in the reaction power generation process of an aluminum-air fuel cell, so that the phenomenon of liquid connection is avoided, and the consumption rate of aluminum is reduced. The liquid pipeline built-in compact type aluminum-air fuel cell monomer comprises a shell, an aluminum electrode is arranged in the shell through an aluminum electrode holder, an inner grid is arranged on each of two opposite side surfaces of the shell, an air electrode is arranged on the outer side of each inner grid, a grid plate is arranged on the outer side of each air electrode, a seal ring is arranged between the aluminum electrode holder and the shell, the air electrode is tightly fitted with the shell, an aluminum electrode connection bar is arranged on the aluminum electrode holder, and a liquid inlet and a liquid return opening are formed in the shell, and are respectively communicated with an inner cavity of the shell through pipelines. The liquid pipeline built-in compact type aluminum-air fuel cell monomer has the advantages of reasonable structural layout, small size and compact structure, the phenomenon of liquid connection is avoided, and the consumption rate of aluminum is reduced.

The invention discloses an integrated system of LOHC and a high-temperature fuel cell. The system comprises a hydrogenation reaction component for receiving hydrogen, a dehydrogenation reaction component connected to the hydrogenation reaction component, a gas temperature control component connected to the dehydrogenation reaction component and connected to external air and an external fuel gas source for gas or heat exchange, a high-temperature fuel cell power supply component connected to the gas temperature control component, and a high-temperature heat exchanger for transferring the heat energy generated by the power supply component to the dehydrogenation reaction component. The system integrates a solid oxidized fuel cell system with an LOHC system, supplies a large amount of heat energy generated by the high-temperature fuel cell system to the hydrogen-releasing reaction stage of the LOHC through the high-temperature heat exchanger, reduces the self-consumption of the LOHC system, and improves efficiency. Further, the released hydrogen can be used as a fuel supplied to the high-temperature fuel cell system to achieve energy saving and environmental protection.

The invention discloses a bypass power generation process and system of dry-process rotary kiln cooperative processing of wet garbage. According to the process, the wet garbage is fed into a C5 discharge pipe, high-temperature alkali powder inside the C5 discharge pipe rapidly dries and alkalifies the garbage, the dry and combustible garbage enters a kiln tail smoke chamber along with the powder to be rapidly gasified and combust, high-temperature steam and combustion emissions generated by combustion are pumped into a bypass settlement flue, are processed by the bypass settlement flue and a bypass draught fan and are mixed into exhaust gas waste heat of a grate cooler head, then the blast capacity and the blast temperature are adjusted, then a steam boiler produces steam power for power generation, garbage not combusting out in time and ash combusting out enter a rotary kiln along with raw power materials to be combusted to be clinker, and hydrocarbon not combusting out in time ascends into a decomposing furnace to continue to combust out. The invention further discloses the bypass power generation system of the dry-process rotary kiln cooperative processing of the wet garbage. The method and system can solve the problems that urban life garbage affects the kiln condition and coal consumption is increased, and can effectively eliminate the problem that a kiln system is blocked by water and chlor-alkali in the garbage.

The invention provides a device system utilizing cement plant waste heat for achieving carbon dioxide cyclic power generation. The device comprises a liquid CO2 storage tank, a high-pressure pumping device, a CO2 energy storage device, a flow stabilizer, a turbine / piston expander, a power generator, a cooling device and a compression device. The CO2 energy storage device is used for making low-pressure liquid CO2 fluid pumped out of the liquid CO2 storage tank directly absorb abandoned waste heat or high-temperature heat energy which is different in temperature and is produced by a cement production line for energy storage, and the low-pressure liquid CO2 fluid is converted into supercritical CO2 fluid different in temperature, pressure and energy density. The flow stabilizer is used for converting the supercritical CO2 fluid different in temperature, pressure and energy density into equal-pressure supercritical CO2 fluid. According to the device system, captured carbon dioxide serves as a working medium, various kinds of abandoned waste heat which is generated in the cement production process and is large in temperature fluctuation and temperature difference is utilized as main energy to achieve carbon dioxide cyclic power generation, and energy consumption is low.

The invention relates to an aluminium-air fuel cell stack structure, and in particular relates to a liquid path built-in compact aluminium-air fuel cell stack. The liquid path built-in compact aluminium-air fuel cell stack comprises a tray; a cell monomer set is arranged over the tray; a front end plate and a rear end plate are arranged at the front and rear ends of the cell monomer set; a lacing wire is arranged in a manner of penetrating the front end plate, the cell monomer set and the rear end plate; a liquid inlet interface and a liquid return interface are arranged on the front end plate; an electrode lead-out interface is arranged on the rear end plate; liquid inlets and liquid return holes are arranged on cell monomers; the liquid inlets and the liquid return holes on the cell monomers in the cell monomer set are respectively connected, such that two closed passageways are formed; the liquid inlets and the liquid return holes of the cell monomers near the front end plate are respectively communicated with the liquid inlet interface and the liquid return interface on the front end plate; and the liquid inlets and the liquid return holes of the cell monomers near the rear end plate are each provided with a liquid path seal head. The liquid path built-in compact aluminium-air fuel cell stack disclosed by the invention has the advantages of being reasonable in structural layout, small in volume, compact in structure and convenient to use, replace and maintain; the liquid sticky phenomenon is avoided; and aluminium consumption rate is reduced.

The invention discloses a sleep control method for an exchange variable pitch control system. The method comprises the steps that in the normal electricity generating state of a wind electricity generating set, the variable pitch control system drives blades to reach the optimum blade pitch angle positions, when | a blade actual position-the optimum blade pitch angle | is less than or equal to 0.1degree error, after some time is delayed, a main control controls the variable pitch control system to enter a sleep mode, a variable blade driver stops outputting, and a variable blade motor brake conducts band-type brake to make the blades reach the optimum blade pitch angle positions. When the variable blade driver breaks down or | a preset main control blade pitch angle-the optimum blade pitch angle | is greater than 0.1 degree, the main control controls the variable blade driver to quit the sleep mode, the variable blade driver begins outputting, and the variable blade motor brake conducts brake releasing. According to the method, the exchange control variable blade system can enter and quit the sleep mode, the work time of the variable blade driver and a variable blade motor is shortened, the temperature rising of the system can be effectively reduced, the using life of a super-capacitor is prolonged, the self-power-consumption of the variable blade control system is reduced, and the wind electricity generating set can be more energy-saving and more environmentally friendly.

The invention discloses a weeding composite which belongs to the agriculture technical field of weedicide and is characterized in that the effective components thereof comprise pyrazosulfuron-ethyl, prometryn and simetryne which have low toxicity. The invention enlarges weeding spectrum, has a large application range, and can be suitable for various rice paddies like transplant fields, rice transplanting fields, and direct seeding fields, and the like. Meanwhile, the weeding composite can reduce the medicine dosage, save work force, improve the working production efficiency and is nonhazardous to rice.

The invention provides a natural gas differential pressure energy recovery unit device which is arranged between a natural gas inlet pipeline and a natural gas low pressure equipment pipeline.The device comprises a turbo expander, a gas inlet pipeline of the turbo expander is connected with the natural gas inlet pipeline, an exhaust pipeline of the turbo expander is connected with the equipment pipeline in need of natural gas, the turbo expander is further connected with a clutch, an output shaft of a motor is coaxially connected with a compressor, and the other end of the motor is coaxially connected with the turbo expander through the clutch.Compared with the prior art, the turbo expander of the natural gas differential pressure energy recovery unit device and a pressure regulator subcircuit are arranged in parallel, when the turbo expander breaks down and the clutch separates quickly, a gas circuit can be switched to the pressure regulator subcircuit rapidly, and normal operation of a system is not influenced.Through arrangement of the turbo expander, a pressure regulator can be effectively replaced to achieve the function of lowering the pressure, meanwhile, action is conducted outward, the compressor is driven to run, self-consumed electricity is effectively reduced, and full utilization of energy is achieved.