538results about How to "Improve working ability" patented technology

The invention discloses a power control system of an excavator. The power control system is characterized by comprising a pressure sensor, a main pump displacement regulator, a revolution speed sensor and a loading calculation module, wherein the pressure sensor and the main pump displacement regulator are arranged on the outlet of a main pump, the revolution speed sensor is arranged on an engine, and the loading calculation module is arranged in the main controller; the pressure sensor, the revolution speed sensor and the main pump displacement regulator are respectively connected with the main controller and output engine revolution speed, throttle position and main pump displacement after being calculated by the loading calculation module to respectively control an actuating mechanism. The method is as follows: low load is a positive flow control mode; high load: a. when engine revolution speed is more than or equal to no-load speed* (1-7%), controlling by a constant power mode; and b. when the engine revolution speed is less than no-load speed* (1-7%), controlling by a limiting power mode. The invention controls by constant power comprehensive limiting power, gives consideration to the power output of a dynamic system on the premise of ensuring excavating force, dynamically adjusts the matching between the practical power of a hydraulic system and requirements, lowers power loss and reduces oil loss.

It relates to a method and device of changing solar energy to chemical energy. It accumulates the solar energy and changing it to heat energy ranging from 150deg.C-300deg.C, providing reaction heat for the liquid fuels, allowing the middle and low level solar energy changing and stored into high level chemical energy, with the liquid being carbinol or dimethyl ether synthetic fuel, with the catabolite being hydrogen and monoxide formed gas. It can be used for multi purposes, providing fine synthetic fuel and material for customers.

The invention discloses a casting-curing insensitive high-explosion-heat explosive which comprises the following components in parts by weight: 65 parts of hexogen, 21.5 parts of aluminum powder, 6-8 parts of binder, 2-3 parts of insensitive agent, 2.5-3.2 parts of plasticizer and 0.5-0.7 parts of curing agent. The hexogen is subjected to grain composition to improve explosive energy. The invention further discloses a preparation method of the explosive, which comprises the steps of batching, mixing, vacuum treatment and vacuum casting, and heating curing. The explosive has a higher explosion heat value, has good viability in hazardous environments such as shock, high temperature, bullets and detonation waves, and has the characteristics of high work capacity and high safety; and compared with PBXN-109 (plastic-bonded explosive-109), the solid content is higher, and the overall properties are equivalent.

The invention discloses a wind and solar hybrid energy storage and power generation integration system and process. The system comprises a wind power generation subsystem, a solar energy storage subsystem, a liquefied air subsystem and a power subsystem. The process comprises the following steps: solar energy is gathered by a thermal collector to obtain heat energy, the heat energy is stored in heat storge medium; wind energy is converted to electric energy, the wind power is used to liquefy air and stored in the liquefied air; and when electricity is required, the liquefied air is pressurized to recycle cold energy for the air liquefying process, then the air is heated by the high temperature heat storge medium which stores solar energy to obtain high temperature and high pressure air, and finally the air is sent to a multistage reheating turbine to expand and do work. The system of the invention recycles the cold energy of the liquefied air to reduce the wasted work for air liquefying; a pump is used to increase the pressure of the working medium, thus reducing the wasted work for compressing the working medium; the turbine utilizes recycled heat for exhaustm, thus effectively utilizing heat energy; solar energy is utilized to heat the working medium at the inlet of the turbine, thus increasing the expansion efficiency of the turbine; and wind energy and solar energy can be utilized for complementation, energy storage and power generation can be integrated and the system of the invention has wide application prospect.

The invention offers an outer machine frequency control method used in air conditioning low temperature heat production. It separates refrigeration highest running frequency from heat production. The highest running frequency of compressor heat production is gained by calculating outer machine temperature and inner machine total power. It also adds heat production effect factor to optimize by controlling frequency.

The invention discloses a novel energy storage system for storing electric energy by means of low-temperature cold energy and an operating method thereof and relates to energy storage techniques. During energy storage, the system consumes electric energy to drive a compressor unit I with stage intercooling and an expansion unit I with stage intercooling, so that the low-temperature cold energy is generated and stored in a low-temperature cold energy storage device; during energy releasing, after the low-temperature cold energy in the cold energy storage device is absorbed by working fluid, the pressure is increased after the working fluid passes through a compressor unit II, and after stored solar energy or industrial waste heat is absorbed through a high-temperature heat exchanger, a power generator is driven through an expansion unit II to generate power. The novel energy storage system for storing the electric energy by means of the low-temperature cold energy has the advantages that cost is low, the thermoelectric conversion efficiency is high, the system is suitable for various power stations including power stations based on the renewable energy sources such as solar energy and wind energy, no greenhouse gas is generated, and waste heat at medium and low temperature (heat value) can be recovered.

The invention discloses a compressed-air energy-storing power generation system adopting an unsteady state compression process. The compressed-air energy-storing power generation system adopting the unsteady state compression process comprises a compressor unit, an air storage device, a turbine generator unit and a heat recovery system, wherein an outlet of the compressor unit is connected with an inlet of the air storage device, and the compressor unit provides compressed air for the air storage device. When the compressor unit provides the compressed air for the air storage device, the pressure of the outlet of the compressor unit synchronously changes along with the pressure in the air storage device, the air storage device stores the compressed air of the compressor unit and provides the compressed air for the turbine generator unit, the heat recovery system feeds back compressed heat to air of the turbine side to improve the temperature of the air, and therefore work of the air can be improved. According to the compressed-air energy-storing power generation system adopting the unsteady state compression process, by means of achievement of synchronous change between the discharge pressure of the outlet of the compressor unit and the air-storing pressure, gradual increase of the power of the compressor unit can be achieved. Due to the unsteady state compression process, under the condition that the compressed air in the same situation is obtained, electric energy consumed by the compressor unit can be reduced, and the transferring efficiency of the electric energy of the system can be improved.

The invention discloses sulfur-free ring stabilizing agent propellant powder which consists of the following components in parts by weight: 70 parts of an oxidant, 34 parts of a burnable agent, 6 parts of an adhesive, 2 parts of a stabilizing agent, 2 parts of an anti-aging agent, 1 part of a catalyst and 2 parts of an antismoke agent which are uniformly mixed according to a general method, wherein the oxidant is a mixture consisting of potassium perchlorate, amine perchlorate and barium nitrate; the burnable agent is a mixture consisting of potassium hydrogen terephthalate, potassium acid phthalate, nitrocellulose, purified terephthalic acid and hemp stem carbon powder; the stabilizing agent adopts calcium stearate; the anti-aging agent adopts calcium phthalate; the catalyst adopts copper oxide; the antismoke agent adopts aluminum hydroxide; the adhesive is selected from one or a mixture of multiple of phenolic resin, strong adhesive powder, glutinous rice flour and polyvinyl alcohol according to any ratio. The sulfur-free ring stabilizing agent propellant powder is high in power capability and excellent in safety performance indexes and has excellent storage stability, and the environment-friendly performance is greatly improved.

The invention discloses a system for improving the low-temperature heat source power generation capacity by using an injection pump. In order to increase the operating differential pressure between aturbine and an air cooler, an injection pump is connected in series between the turbine and the air cooler; a steam generator is additionally connected in series behind a first-level steam generator;a water side of the first-level steam generator is connected in series with a water side of a second-level steam generator; a working medium side of the first-level steam generator is connected in series with the turbine, the injection pump, the air cooler and a first working medium pump to form a closed loop; and a working medium side of the second-level steam generator is connected in series with the injection pump, the air cooler and a second working medium pump to form another closed loop. The invention reduces the backpressure of the turbine, increases the operating differential pressureand enhances the working ability. The low-temperature heat source performs secondary heat release in the second-level steam generator, and the steam after heat exchange is used as the working steam ofthe injection pump, thereby realizing the graded use of energy and improving the energy use ratio.

The invention discloses an organic Rankine cycle power generation system with a liquid ejection device. The organic Rankine's cycle power generation system is mainly characterized in that: a liquid ejector and a working medium pump are additionally arranged between an expander and a condenser in a Rankine cycle system; the working fluid inlet of the liquid ejector is connected with a secondary working medium pump; the inlet of a fluid ejected by the liquid ejector is connected with the outlet of the expander; the mixed fluid outlet of the liquid ejector is connected with the inlet on the working medium side of the condenser; the working medium side outlet is connected with the primary working medium pump and the secondary working medium pump respectively; and the primary working medium pump is connected in series with an evaporator, the expander, the inlet of fluid ejected by the liquid ejector and the condenser sequentially to form a closed loop. The exhausted gas of the expander is used as the ejected fluid, the back pressure of the expander can be reduced, the working pressure difference is increased, and the working capacity of the Rankine cycle system can be improved. Meanwhile, the non-steam liquid ejection is adopted, and heat input of the ejector is prevented, so that the output work of the Rankine cycle system is increased, and the thermal efficiency is obviously improved under the condition of inputting the same amount of heat.

The invention discloses a cross bionic blade combining a carangidae fish body and a pinion and a preparation method of the cross bionic blade, and the cross bionic blade is used for a multi-blade centrifugal fan. The cross bionic blade comprises a blade body. The cross section of the blade body has a carangidae-fish-cross-section-contour-imitation appearance, the mean camber line of the blade bodycross section is in a single arc shape, and the circle center position, the circular arc radius and the circular arc central angle of the mean camber line of the blade body cross section are determined according to a forward-bent blade profile design method of the multi-blade centrifugal fan. The end face, facing the impeller sucking-in side, of the blade body is of a wave-shaped structure, and the end face, facing the impelling blowing-out side, of the blade body is of a saw-tooth-shaped structure. The blade can improve the flowing of airflow in the impeller on the premise of increasing theair volume, the pressure fluctuation on the surface of the blade is lowered, and the aerodynamic noise is lowered.

The invention discloses a complex turbine device with a variable section, comprising a double flow channel turbine volute, wherein the double flow channel turbine volute is provided with two air flow passageways; the double flow channel turbine volute is provided with a volute air outlet and a volute air inlet which are communicated with the air flow passageways; a complex turbine impeller is arranged in the double flow channel turbine volute; and the complex turbine impeller is formed by compounding two turbine impellers which correspond to the two air flow passageways one by one. In the invention, the variable section function can be achieved by design and development of the turbine of a turbocharger and by using the complex turbine device, thereby effectively solving the defects of poor reliability and high cost of a vane type turbocharger with the variable section, effectively improving the efficiency of the turbine of an engine in low speed and increasing the torque output of the turbine.

The invention discloses viscous porous granulated ammonium nitrate fuel oil explosive and a preparation method thereof. The ammonium nitrate fuel oil explosive comprises the following constituents in weight percent: 83 to 85 percent of porous granulated ammonium nitrate, 4.5 to 6 percent of compound oil phase, 3.5 to 6 percent of tackifier, 0.2 to 0.5 percent of expanded perlite, 1.3 to 2 percent of powder type explosive energy accelerant, and 3 to 5 percent of thickener. The method comprises the following steps: a, adding the porous granulated ammonium nitrate into a viscous porous granulated ammonium nitrate fuel oil explosive mixer, then adding the compound oil phase, stirring for 2 to 4 minutes at normal temperature, mixing the porous granulated ammonium nitrate and the compound oil phase to be uniform, so as to form mixture A; b, adding the tackifier, the powder type explosive energy accelerant and the expanded perlite into the mixture A, stirring for 1 to 2 munities at normal temperature, mixing the mixture A, the tackifier, the powder type explosive energy accelerant and the expanded perlite to be uniform, so as to form mixture B; and c, adding the thickener into the mixture B, stirring for 1 to 2 munities at normal temperature, and mixing the mixture B and the thickener to be uniform, so as to form the viscous porous granulated ammonium nitrate fuel oil explosive, and then packaging the viscous porous granulated ammonium nitrate fuel oil explosive. The viscous porous granulated ammonium nitrate fuel oil explosive and the method have the advantages that preparation and storage processes are safe and controllable, the power capability is high, the storage period is long, and the explosive is efficient and environmentally friendly.

The invention belongs to the technical field of thermoelectricity, and relates to an extraction condensing heat supply system additionally provided with a non-reheat medium-pressure steam turbine. A part of steam is separated from a steam exhaust port of a high-pressure cylinder of a main steam turbine to enter the added non-reheat medium-pressure steam turbine, and the rest of steam enters a reheater of a boiler and a No.II high-pressure heater; the steam entering the medium-pressure steam turbine does not need to be reheated, an independent generator II is driven, four-stage extraction steam of the medium-pressure steam turbine serves as a heat source for a No.III high-pressure heater, a No.V low-pressure heater, a No.VI low-pressure heater and a deaerator to replace a part of regenerative extraction steam of the main steam turbine, and the extraction steam of the medium-pressure steam turbine is discharged into a heater for heating network to heat heating network water. An effect of additionally installing the medium-pressure steam turbine in the extraction condensing heat supply system disclosed by the invention is to reduce heat exchange exergy loss by reducing heat exchange temperature difference of a part of regenerative heaters and the deaerator; work capability of heat supply steam flow is increased, and therefore heat loss of a high-capacity heat supply unit is caused by a high extraction steam parameter is reduced; and the extraction condensing heat supply system disclosed by the invention is suitable for heat supply and energy conservation transformation on 300 MW (megawatt), 600 MW and above steam turbine units.

The invention relates to a novel geothermal and optothermal cogeneration system, which is characterized by comprising a geothermal evaporator, a solar overheater, a prime motor, a prime motor exhaust port, a working medium compression device, an air-cooling radiator, a liquid storage tank and a working medium booster pump. The solar overheater, the prime motor, the prime motor exhaust port, the working medium compression device, the air-cooling radiator, the liquid storage tank and the working medium booster pump are sequentially communicated with the geothermal evaporator; and the prime motor is respectively communicated with the working medium compression device and the air-cooling radiator through a three-way reversing valve. The invention has the advantages that a substance with a lowboiling point is used as a working medium for power and refrigeration circulation, the medium-temperature and low-temperature geothermal heat can be used as a heat source for evaporation of the working medium, solar energy is adopted as an overheating source for the working medium, and the geothermal evaporator is arranged in a downhole. The circulating working medium is delivered into the evaporator at the bottom of a geothermal well for evaporation to absorb heat of geothermal fluid, geothermal hot water needs not to be pumped to the surface, the evaporation temperature of the working medium can be increased, well backfilling can be eliminated, corrosion and scaling can be reduced, and the service life of the system can be prolonged. Moreover, the system has a simple and reasonable structure and good economical performance in heat for power generation.

The invention relates to the technical field of aircraft gas turbines and discloses a self-adaption compressor for improving flow of a rotor blade tip and a stator angular region. The self-adaption compressor comprises a stator blade, a rotor blade and a casing with a gas introducing circulation cavity. The gas introducing circulation cavity is formed inside the casing and composed of a gas introducing circulation cavity inlet, a high-pressure gas pressure-stabilizing cavity and a main gas introducing pipe. A flexible inlet side wall hinged to the inlet can regulate and control the open degree under the pressure differential effect in a self-adaption mode. The ultimate open degree position of the inlet is restrained by a hydraulically-controlled limiting supporting rod and a check block in the ultimate position of the flexible inlet side wall. The different ultimate open degrees can be set under different work states and are regulated within the open-degree range in a self-adaption mode. Through a self-circulation gas introducing structure, leakage flow of the rotor blade tip of the compressor and separation flow of the stator angular region of the compressor are improved. Through a foreign matter separating device, foreign matter entering the compressor is removed timely, and stable operation of the compressor is guaranteed. Through the high-pressure gas pressure-stabilizing cavity, needed high-pressure gas is provided for an aircraft and an engine.

The invention relates to a pneumatic designing method of a counter rotating compressor combining the pumping of a boundary layer, which belongs to the technical field of the pneumatic design of a high-load axial-flow compressor, and can effectively solve the series of problems when two columns of rotors of the existing counter rotating axial-flow compressor directly rotate in a counter way, and also can prevent the pumping of the boundary layer from being carried out in a rotor. By utilizing a way for enhancing the outlet axial speed of a movable blade, a first column of rotors can be pneumatically designed under a given load pneumatic design target; the axial component speed of an absolute speed in an inlet of a second column of movable blades can be determined according to the rotation speed of a second column of movable blades; a pre-rotation angle of the inlet of a second column of rotors is calculated according to the inlet mach number demand of the second column of rotors and the load of the first column of rotors; and the radial outlet speed and the radial inlet speed in two columns of stationary blades of the second column of rotors can be solved according to the outlet axial speed and the outlet airflow angle of the second column of rotors and the outlet axial speed of a second column of stators. Due to the adoption of the pneumatic designing method, the working capacity of each column of rotors of the counter rotating compressor can be adequately tapped, and the high-load pneumatic design of the counter rotating compressor can be realized.

The invention relates to a compressed air heat-linkage energy-storage system based on a reversible air engine, which comprises a motor generator, the reversible air engine, an air reservoir and an heat insulation water tank, wherein the motor generator is connected with the reversible air engine by a speed reducer, and the reversible air engine is respectively connected with the air reservoir and the heat insulation water tank. At the valley period of power consumption, compressed air is made and stored in the air reservoir, and the released heat is stored in the water; at the peak period of power consumption, the compressed air is utilized to drive the reversible air engine to generate electricity, and the stored heat water is used for heating the compressed air. The reversible air engine integrates a compressor and an engine into a whole body, adopts the technical schemes of tail gas pressure stabilization and timely cylinder variable, eliminates the energy loss taken away by tail gas and the decompression energy loss during the gas inlet and has high energy conversion efficiency. The system can be used for peak clipping and valley filling and emergency standby of an electric power system and also solve the intermittent bottleneck of wind power generation as well as the development and the utilization of the off-peak electrical power at night.

The invention relates to an internal combustion steam boosting take-off unit of an airplane, and belongs to the technical field of boosting take-off technology of airplanes. The internal combustion steam boosting take-off unit of the airplane comprises a combustion chamber, a balancing chamber, an air cylinder, an electromagnetic piston, an electromagnetic lantern ring, a breather pipe, a blow-off pipe and five valves. The outlet of the combustion chamber is connected with the balancing chamber through a pipeline. The electromagnetic piston is arranged inside the air cylinder and can slide and move. The electromagnetic lantern ring is sleeved outside the air cylinder. The electromagnetic lantern ring follows up under the effect of an electromagnetic force of the electromagnetic piston. A valve is arranged at the left end of the balancing chamber. Four of five valves are arranged on the side wall of the air cylinder. The combustion chamber is provided with a catalyst net, an oil spray hole, a gas injection hole and a water injection hole. High-pressure oil and high-pressure oxygen combust in the combustion chamber to generate gas. High-pressure water enters the combustion chamber through the water injection hole and steam turns into vapor. Then the vapor and the gas enter the balancing chamber to push the electromagnetic piston to move and the electromagnetic lantern ring follows up. The internal combustion steam boosting take-off unit of the airplane provided by the invention is small in electromagnetic energy consumption and light and simple in device. The internal combustion steam boosting take-off unit of the airplane provided by the invention is high in energy conversion ratio, energy-saving, economic and environment-friendly.

The invention relates to an underwater robot-underwater robot arm system, belonging to the field of underwater robots and comprising three parts: an underwater robot body, an underwater manipulator and an auxiliary adjusting device; the underwater robot body is an autonomous underwater robot without cables, and the power system of the underwater robot body uses the under-actuated mode to control the attitude and motion of the underwater robot, and the drive system of the underwater robot body consists of single propellers and one cruciform of rudder, which are installed at the stern of the underwater robot body; the system uses the underwater manipulator with four degrees of freedom and five functions, and the underwater manipulator consists of two rotative joints and two pendulum joint and one manipulator grasp, and the auxiliary adjustment device is installed directly below the underwater robot and is close to the stern. The device is driven by a lead screw slider mechanism and a servo motor. By moving the slider, the adjustment of the center of gravity of the underwater robot can be achieved, which compensates the influence of the underwater manipulator on the longitudinal change of the center of gravity of the underwater robot during the movement, thereby achieving the attitude stability of the underwater robot.

The invention discloses a lateral structure and arranging method of a steam turbine generator unit of a 1000MW-grade unit in a thermal power plant. A bunker bay is arranged between two boiler houses or between a boiler house and a steam turbine house; the longitudinal axis of the steam turbine generator unit is vertical to that of the steam turbine house, and the head of a steam turbine in the steam turbine house faces to the boiler house; and the central line of the steam turbine generator unit is aligned to the central line of a boiler. The invention has the advantages that: (a) the volume of a main power house is reduced; (b) the length of a steam-water pipeline is reduced, and particularly, the length of an expensive high-temperature and high-pressure steam pipeline in a steam pipeline system and the pressure reduction and heat radiation loss of the pipeline system are reduced; (c) no restriction of generator arrival time exists during field construction and the construction organization is simple; and (4) the tail of a generator of each unit is provided with an independent overhaul field.

The invention discloses a solar heat collection, energy storage and back heating system applied to a thermal generator set, and belongs to the field of energy conservation and emission reduction of the thermal generator set. The solar heat collection, energy storage and back heating system provided by the invention is connected with the conventional thermal generator set through a pipeline and a valve. The solar heat collection, energy storage and back heating system consists of a heat exchanger, an oil pump, a solar heat collection field, a heat accumulator and a heat exchanger which are connected in turn in a closed-loop mode; a heating working medium input end of the heat exchanger is connected with a center tap of a water supply pump of the thermal generator set; and a heating working medium input end of the heat exchanger is connected with a certain back heating steam extraction pipeline of the thermal generator set. The system can provide qualified heating steam for a certain back-heat heater through proper valve switching operation without changing a thermodynamic system structure of the conventional thermal generator set to stop using back heating extracted steam of a primary steam turbine so that the generating coal consumption of the thermal generator set is reduced and the purposes of energy conservation and emission reduction of the thermal generator set are fulfilled.