201results about How to "Improve unit efficiency" patented technology

A modular adaptive power management center integrating control and management of multiple electrical power sources such as locally generated solar or wind power, connections to an electrical utility service provider, battery power, and others. The system increases system efficiency by monitoring load requirements and matching available power sources in real time. A wall mounted rack system houses a system backplane and a main system microprocessor. The backplane accepts plug-in power modules including power converters each dedicated to managing one of various energy sources such as local wind or solar sources, as well as utility grid connections and battery backup systems. The system also includes a backup battery bank and a battery power module to control charge / discharge activity of the batteries. A variety of user interfaces are provided including via a local LCD display, LED indicators, and remote access and monitoring through an Internet connection and browser window. The modular nature of the design allows a homeowner / user to “plug-in” additional modules as new power sources become available.

The invention discloses a turbine DEH system high-pressure regulating valve flow characteristic testing and setting method, which comprises the steps: relieving the AGC and the primary frequency modulation control method of a DEH system high-pressure adjusting valve, and recording the main steam pressure of a unit; relieving the coordination control method and the DEH remote control method of the DEH system high-pressure adjusting valve, and switching in a DEH valve control method and main steam pressure constant pressure automation; forcedly closing the high-pressure adjusting valve by an instruction according to a specified rule, and recording data; forcedly opening the high-pressure adjusting valve by an instruction according to a specified rule, and recording data; determining a flow characteristic correction curve of the high-pressure adjusting valve according to experimental result data. The testing and setting method has the beneficial effects that the unit efficiency and whole performance indexes are improved, the automation control level is improved, the operation efficiency of the unit is improved, and primary energy is saved.

A granular biomass burning furnace for use with any appropriate granular biomass, such as grains, cherry pits, etc. The furnace includes a three stage heat exchanger, a fuel injector, a fuel stirrer, an ash ejector, a wash down system, a three stage air inducer, a fuel igniter, and supporting components. The unit includes a computer controller which controls all aspects of the operation of the unit based on information from sensors located throughout the unit. The unit includes a smart logic thermal controller to adjust the output heat of the unit via a variable speed air inducer. The three stage heat exchanger system includes a spiral water jacket surrounding the burn pot, a plurality of heat exchanger baffles in the unit, and a fine finned heat exchanger at the top of the unit. The air inducer provides air to the burn pot from three directions to promote complete combustion.

A fastener driving apparatus comprises a gas spring or spring, a drive mechanism, an anvil assembly, and an anvil. The drive mechanism permits transition from engagement with the gas spring, spring or anvil assembly to disengagement from the gas spring, spring or anvil assembly. The anvil and / or anvil assembly are operatively coupled to the gas spring or spring such that after the drive mechanism disengages them, the gas spring piston or the spring moves to imparts a force on the anvil to cause the anvil to move and drive a fastener. The mass of the anvil assembly is preferably greater than 50% of the total mass of the anvil assembly and gas spring moving mass. The gas spring is configured such that the pressure increase during the movement of the gas spring piston by the drive mechanism is less than 30% of the initial pressure in the gas spring.

The device (10), for the continuous generation of cold and heat by magneto-calorific effect, comprises a mixture of a heat exchange fluid and particles made from at least one magneto-calorific material, superconductor or phase-change material circulating through a first heat exchanger (11) subject to a magnetic field generated by magnetic device (14), associated with the first heat exchanger (11). On passing into the generated magnetic field, the particles undergo an increase in temperature and heat the mixture in the first heat exchanger (11) and on leaving the magnetic field, the particles undergo a reduction in temperature to cool a mixture entering a second heat exchanger (12). A cold circuit (16) extracts the cold from the second heat exchanger (12) and a hot circuit (15) extracts the heat from the first heat exchanger (11).

The invention discloses a real-time statistics system for public transport passenger flow and a method for carrying out real-time statistics on public transport passenger flow by virtue of the system and belongs to the technical fields of passenger flow statistics and analysis. The system comprises a vehicle door controller, a video monitoring device, an analyzer and a wireless emitting device, wherein the vehicle door controller is used for starting and stopping the video monitoring device and the analyzer, the video monitoring device is used for acquiring an image, the analyzer is used for analyzing acquired passenger flow information and performing statistics, and the wireless emitting device is used for emitting the passenger flow statistics information acquired in real time. The method has the advantages that the passenger flow statistics accuracy is high when the passenger flow volume needs to be rapidly calculated in a short time at a passenger flow peak time, less equipment is used on the premise of ensuring high accuracy, and the problems of heating and wasting of statistics equipment are avoided; as the real-time statistics system can be in seamless joint with an intelligent public transport system, the intelligent management of public transport operation dispatching is realized.

A fastener driving apparatus comprises a gas spring or spring, a drive mechanism, an anvil assembly, and an anvil. The drive mechanism permits transition from engagement with the gas spring, spring or anvil assembly to disengagement from the gas spring, spring or anvil assembly. The anvil and / or anvil assembly are operatively coupled to the gas spring or spring such that after the drive mechanism disengages them, the gas spring piston or the spring moves to imparts a force on the anvil to cause the anvil to move and drive a fastener. The mass of the anvil assembly is preferably greater than 50% of the total mass of the anvil assembly and gas spring moving mass. The gas spring is configured such that the pressure increase during the movement of the gas spring piston by the drive mechanism is less than 30% of the initial pressure in the gas spring.

The invention relates to a low-temperature heat energy recovering apparatus of heat and electricity co-generation and a recovering method thereof. The apparatus comprises a steam boiler, a steam turbine, a generator, a condenser, a deaerator, a high-pressure heater, a cooling tower and a demineralized water pump. The steam turbine is connected with the condenser through an exhaust cylinder. The condenser is connected with the cooling tower through pipelines to form a water channel large circulation. The device is characterized by also comprising a water supplementing mixer and a heat pump type feed water heater, wherein the water supplementing mixture is respectively connected with the condenser and the demineralized water pump through pipelines, the heat pump type feed water heater is respectively connected with the water supplementing mixer and the deaerator through the pipelines. The condenser and the feed water heater are connected with the cooling tower through pipelines to form water channel small circulation. The heat pump type feed water heater is driven by steam extracted by the steam turbine. The apparatus further comprises an automatic control apparatus. The invention can reduce the cold source loss and improve the comprehensive heat efficiency.

The invention discloses an adjustment and control method for the synchronism of guide vanes of a large-scale water turbine, comprising the following steps: the resistance value of a drive coil of a servomotor is measured and then accurately defined in a single guide vane controller; the zero position and the full scale of a single guide vane instruction of the single guide vane controller are adjusted; a guide vane in the single guide vane controller synchronously controls adjustment of the zero position and the full scale of the instruction; the zero position and the full scale of a guide vane opening displacement sensor are adjusted; the vane mechanical bias voltage is measured and adjusted; the control parameter of the single guide vane is set; the synchronous control parameter of the guide vane is set; the starting time and the closing time of the guide vane are measured and adjusted; a single guide vane displacement transmitter gives a failure alarm; a single guide vane control loop gives an alarm; and an overall guide vane control loop gives an alarm. The adjustment and control method improves the control precision of guide vanes of a hydropower generating unit; the deviation of the opening instruction and the feedback is small; the action synchronism of the guide vane is good; both the starting time and the closing time of the guide vane meet the design requirements; the maximum deviation of the switching time is better than that of the standard requirement.

The invention discloses an online monitoring method for the flue gas temperature of a hearth outlet of a power boiler, comprising the steps of: placing a plurality of targets at a vertical section near a smokestack of a boiler for sensing the temperature; installing a near infrared imaging device on the side wall of a horizontal flue of the boiler for collecting the radiation energy of the targets; carrying out communication by the near infrared imaging device with a computer through a serial port and RS232, sending the collected radiation energy of the targets to the computer, calculating by the computer to obtain temperature data of the targets; and then sending the temperature data of the targets to a host computer for processing, and converting the temperature to the flue gas temperature of the position of the targets. The invention has the advantages that the average temperature at the section of the hearth outlet, the average temperature of the upper / lower and left / right side, and the highest / the lowest temperature can be continuously monitored, the distribution curve of the temperature of the section can be drawn, and a plurality of alarm functions are set; and the invention is beneficial to the safe and economic operation of a boil with a large capacity and high parameters.

The invention discloses an all-water capillary network air conditioning system which is free os a fan and an air conditioning method. The invention is characterized in that a capillary network radiated unit and a capillary network air circulatory unit are arranged in one air conditioning area. The capillary network for radiation is arranged in the capillary network radiated unit, in which cooling water or hot water of 15 to 40 DEG C is infused. The capillary network radiates towards the air conditioning area and cool or heat. The capillary network air circulatory unit is provided with a case. A case panel towards the air conditioning area is provided with an upper air inlet and a lower air inlet. The capillary network for air circulation is arranged in the case, in which cooling water or hot water is infused from an external machinery room of cold and hot source. The temperature difference generated by the air conditioning area and the case of the capillary network air circulatory unit realizes the air circulation and the moisture removal of the air conditioning area. The invention has the advantages of simple structure, convenient installation, no need of other equipment, no noise, less space and obvious energy-saving effect. The service life can be as long as 50 years. The invention can be used in winter and summer, suitable for promotion and application.

The invention relates to a direct-burning lithium bromide absorbing cold hot water unit capable of recycling smoke waste heat. A smoke condensation heat exchanger (18) is arranged at a smoke discharging outlet pipe of a direct-burning high pressure generator, an outlet refrigerant water pipeline of a refrigerant pump (22) is divided into two branches, one branch is connected with an evaporator (4) through a refrigeration refrigerant water valve (15), and the other branch is connected with the smoke condensation heat exchanger (18) through a heating refrigerant water inlet valve (14) and then connected and joined with a pipeline at the rear side of the refrigeration refrigerant water valve (15) through a heating refrigerant water outlet valve (25) or connected with the evaporator (4) alone. A solution pump outlet dilute solution pipeline is divided into two branches, one branch of dilute solution is heated through a low-temperature solution heat exchanger and a high-temperature solution heat exchanger to be connected with the direct-burning high pressure generator, and the other branch of dilute solution is connected with a smoke condensation heat exchanger through a dilute solution inlet valve to be connected and joined with a pipeline at the rear side of the high-temperature solution heat exchanger through a dilute solution outlet valve or connected with the direct-burning high pressure generator alone. The direct-burning lithium bromide absorbing cold hot water unit can fully use the smoke heat and improves efficiency.

A motor module, method, apparatus and system for implementing linear and rotary motors, such as relatively large rotary motors, are disclosed. In one embodiment, an electrodynamic machine can include magnets having angled magnetic surfaces and regions of predetermined magnetic polarization. The magnets can include a first array and a second array of magnets arranged in a direction of motion. Also included are groups of field pole members arranged adjacent to the first array and the second array of magnets. The field pole members include angled flux interaction surfaces, which can be formed at the ends of the field pole members to confront the angled magnetic surfaces. In combination, the angled flux interaction surfaces and the angled magnetic surfaces define air gaps. As such, the angled flux interaction surfaces are configured to magnetically couple the field pole members to the magnets to form either a linear or rotary motor.

The invention discloses a highly effective planting comprising the steps of, shoveling with a ditching machine and raising the field, controlling the elevated ground surface height to 1.6-2.0m, stabilizing the groundwater under the trench water level, pumping alkali with fresh water in spring, and conducting salt washing and desalination with river water. The method can reduce the salt content from 0.4-1.0% to below 0.2%.

The invention relates to a heating plant for supplying heat for a heat-engine plant by recovering exhaust steam and vaporizing latent heat for solving the question of dead steam heat supply for an air cooling machine unit of the heat-engine plant. The invention has the following technical proposal: a condenser branch is led out from the middle part of a dead steam pipeline, a plurality of heat supply units are arranged on a cooling circulating water loop of the condenser, each heat supply unit comprises a heat exchanger, a heat exchanger circulating water pump, a heat pump machine unit and a heat supply user terminal; the condenser cooling circulating water passes through the exchanger, the cooling circulating water pump and the condenser to form a cooling water closed loop; the heat exchanger circulating water passes through a heat pump machine unit heat absorption side, the heat exchanger circulating water pump and the heat exchanger to form a heat exchange water closed loop; heat user circulating water passes through a heat pump machine unit heat release side, the heat supply user terminal and the heat supply circulating pump to form a hot water supply closed loop. In the invention, exhaust steam of a steam turbine is recover and latent heat is vaporized to supply heat in combination with the heat pump, so that work-doing steam is not consumed, heat supply temperature can be adjusted according to needs at the user terminal; in addition, the heating plant features flexible application, obvious energy conservation effect and improved machine unit efficiency.

The invention discloses a circulating fluidized bed boiler with second reheaters. The boiler comprises an air compartment, an air distributor, a combustion chamber, a primary air system, a second air system, a horizontal flue, a plurality of cyclone separators, a plurality of external heat exchangers and a back-end flue. The contraction ratio of the lower part of the combustion chamber is 0.2-0.49. A flue gas damper is arranged in the back-end flue. The back-end flue contains at least two parallel flues. A low-temperature superheater is arranged in one parallel flue. A primary low-temperature reheater is arranged in the other parallel flue. A medium-temperature superheater is arranged in at least one external heat exchanger. A primary high-temperature reheater is arranged in at least one external heat exchanger. A second low-temperature reheater and a second high-temperature reheater are arranged in at least one external heat exchanger. A high-temperature superheater is arranged at the upper part of the combustion chamber. The boiler can effectively raise the heat-transfer intensity inside the boiler, and cooperates with optimized heating surface arrangement modes to achieve effective combination of second reheaters and a circulating fluidized bed, and therefore the aims of raising power generating efficiency of coal power units and reducing pollutant discharge are achieved, and long and high-efficient running of the device can be guaranteed.

A retroreflective function member exhibits better retroreflective properties than a cube corner type retroreflective function member, which e has conventionally excelled most in the retroreflective properties is provided. The retroreflective function member is formed by injection molding transparent acrylic resin to provide a substantially plate-shape of which the upper surface, the bottom surface, and right and left surfaces are flat. The front surface is adapted to serve as the incoming and outgoing surfaces and aluminum is deposited on the rear surface to be used as a reflective surface. The outside of the rear surface is protected by a resin.

The invention discloses a specific cutting knife-material of semiconductor material wire (6H-SiC), which comprises the following steps: 1. grinding through cyclone; grading flow; 2. grading water pretreatment; grading finely for overflow; 3. wetting to blend; dehydrating eccentrically; separating; 5. drying through microwave continuously; 6. blending dryly. The invention is compatible with flexibility of black carbofrax, which improves anti-grinding property obviously.

The invention provides a fed air conditioning system of a gas-steam combined cycle power plant and a use method of the fed air conditioning system. The air outlet end of a gas turbine is communicated with a heat recovery boiler; the heat recovery boiler is communicated with a steam turbine. The fed air conditioning system comprises a surface air cooler unit and a lithium bromide absorption chiller, wherein the air outlet end of the surface air cooler unit is communicated with the air inlet end of the gas turbine; a heat exchange water pipe is arranged in the surface air cooler unit and is communicated with the heat recovery boiler; the lithium bromide absorption chiller is communicated with the heat exchange water pipe. The fed air conditioning system is used for increasing the unit output under summer working conditions, and simultaneously improving the unit efficiency under winter working conditions and the unit efficiency under partial loading working conditions, so that the occurrence of the supply-demand non-matching problem of the unit and a power grid at different running stages is reduced, and simultaneously the running economy and flexibility of the gas-steam combined cycle power plant are improved.

A fastener driving apparatus comprises a gas spring or spring, a drive mechanism, an anvil assembly, and an anvil. The drive mechanism permits transition from engagement with the gas spring, spring or anvil assembly to disengagement from the gas spring, spring or anvil assembly. The anvil and / or anvil assembly are operatively coupled to the gas spring or spring such that after the drive mechanism disengages them, the gas spring piston or the spring moves to imparts a force on the anvil to cause the anvil to move and drive a fastener. The mass of the anvil assembly is preferably greater than 50% of the total mass of the anvil assembly and gas spring moving mass. The gas spring is configured such that the pressure increase during the movement of the gas spring piston by the drive mechanism is less than 30% of the initial pressure in the gas spring.

The disclosure provides an M-type pulverized coal boiler suitable for ultrahigh steam temperature. The pulverized coal boiler comprises a hearth of which the bottom is provided with a slag hole and a tail downward flue of which the lower part is provided with a flue gas outlet. The pulverized coal boiler further comprises a middle flue communicated between the hearth and the tail downward flue, wherein the middle flue comprises an upward flue and a hearth outlet downward flue of which the bottoms are mutually communicated and the upper ends are respectively communicated with the upper end of the hearth and the upper end of the tail downward flue to form a U-shaped circulation channel. In the pulverized coal boiler provided by the disclosure, the middle flue which extends downwards and can make flue gas flow along the U-shaped circulation channel is arranged between the outlet of the hearth and the tail downward flue, so that high-temperature flue gas from the hearth can be introduced into a position with low elevation through the downward flue, and final-stage convection heating surfaces (such as a high-temperature superheater and a high-temperature reheater) can be arranged at positions with low height, and the length of ultrahigh-temperature steam pipelines between the high-temperature superheater and a steam turbine, and between the high-temperature reheater and the steam turbine can be greatly reduced. Therefore, the manufacturing cost of a boiler unit is obviously reduced.

The present invention discloses device and method for eliminating SO2 from gas with combined ultrasonic wave and hollow fiber containing soaked film. The device has hollow fiber assembly, sandwiched jacket around the assembly, ultrasonic transducers set longitudinally along the sandwiched jacket and arranged in an array with interval of 0-100 mm. The method includes absorbing SO2-containing gas with hollow fiber containing citric acid solution soaked film, preparing high concentration SO2 gas with the absorbed citric acid solution, and the reuse of the citric acid solution. Compared with conventional technology, the present invention has the features of great absorption depth and high SO2 eliminating rate.

The device (10), for the continuous generation of cold and heat by magneto-calorific effect, comprises a mixture of a heat exchange fluid and particles made from at least one magneto-calorific material, superconductor or phase-change material circulating through a first heat exchanger (11) subject to a magnetic field generated by magnetic device (14), associated with the first heat exchanger (11). On passing into the generated magnetic field, the particles undergo an increase in temperature and heat the mixture in the first heat exchanger (11) and on leaving the magnetic field, the particles undergo a reduction in temperature to cool a mixture entering a second heat exchanger (12). A cold circuit (16) extracts the cold from the second heat exchanger (12) and a hot circuit (15) extracts the heat from the first heat exchanger (11).

The invention provides blower housings for air handlers and hot air furnaces which are made from molding compounds that allow for wide flexibility in molding complex configurations so as to improve blower efficiency, which improve manufacturing efficiency and safety and provide suitable mechanical properties, safety in use, and sound dampening. These compounds are generally liquid thermosetting molding resins which comprise a thermoset resin matrix such as a isophthalate polyester having a specific loading of glass reinforcing fibers. The compositions also include flame retardant additives. They are further formulated to meet the desired molding characteristics; to withstand the operating temperatures to which they will be exposed; and to have a predetermined strength and a desirable user interface including appearance, and odor. Typically, the compounds will have a glass transition temperature from about 160° C. (320° F.) to about 185° C. (365° F.).

A switching power supply unit generates a pulse signal having a duty factor based on the voltage associated with the difference between a reference voltage and the output voltage of the unit, and the voltage associated with the current flowing through a smoothing coil. Upon receipt of the pulse signal and a light-load determination signal, a delay-control unit of the power supply unit outputs as an instruction signal supplied to the switching circuit the pulse signal as it is when the light-load determination signal indicates that the load is not light, but otherwise outputs the pulse signal after delaying and widening the pulse width thereof. Thus, when the load is light, the switching power supply unit may hold its switching frequency substantially low and constant without rendering the frequency bursting discontinuously.

The invention discloses a method for controlling the steam temperature of a large-scale multilayer arranged pulverized coal furnace, having the steps that: after being performed with high-selective processing, the steam temperature collected on the spot above an outlet is compared with a set value corresponding to a load command to generate a control deviation value; the generated control deviation value is sent to an inlet of an adjustor for calculation to generate a control command for adjusting the flame center; and the control command is connected to offset terminals of a fuel manipulator of each layer via gain balance modules to control the fuel of each layer. The invention, by means of a method of adjusting the steam temperature through adjusting the combusting flame center of the boiler, neither needs to change a thermal system to increase unnecessary risk or economic spending, nor needs to maintain site plants so as to reduce workload of a maintainer, and in particular reduces the usage amount of desuperheating water to increase unit efficiency, so that the adjustment of the desuperheating water can be recovered to the original nature in emergency duty.

The invention provides a counter-rotating bidirectional axial flow pump water turbine. The counter-rotating bidirectional axial flow pump water turbine comprises a pump case and branch pipes; the branch pipes are symmetrically mounted on two sides of the pump case; impellers are symmetrically arranged in the pump case; transmission shafts of the impellers penetrate through the branch pipes to be connected with transmission components; the transmission shafts are provided with guide vane assemblies moving in the axial direction; the guide vane assemblies are positioned near the impellers; eachguide vane assembly comprises a movable guide vane, a guide shaft and a guide vane housing; the guide vane housings are mounted between the branch pipes and the pump case; axial guide slots are formedin the guide vane housings; the movable guide vanes are connected with the transmission shafts through sliding bearings; ends of the movable guide vanes are positioned in the axial guide slots; the guide shafts are mounted at ends of the blades of the movable guide vanes; and the guide shafts are connected with driving mechanisms through transmission mechanisms, and are used for enabling the movable guide vanes to axially move. The pump device efficiency is improved by adjusting the gaps between the impellers and the guide vanes.

The invention relates to an evaporative cooling air conditioning system combining roof spraying cooling and night cold storage. The air conditioning system comprises an outdoor evaporative cooling air conditioning unit. The outdoor evaporative cooling air conditioning unit is connected with a roof water storage tank, a room terminal device disposed in a house and a cold storage water tank outside the house through a water pipe network. The outdoor evaporative cooling air conditioning unit is communicated with the inside of a room through an air supply pipe. The outdoor evaporative cooling air conditioning unit has the advantages that the roof water storage tank effectively lowers cold load formed through roof heat transfer in the daytime, the room is cooled by the cold water in the water storage tank, and the evaporative cooling air conditioning unit is started when the cold water cannot satisfy the cooling requirements; cold storage can be performed by fully utilizing the advantageous weather conditions, the obtained cold water is stored for being used in the daytime, and cooling is performed by fully utilizing low power prices, and operation cost is lowered; in the meantime, by the cold air provided by the evaporative cooling air conditioning system at night, ventilation, cooling and cold storage of the room can be achieved, and cooling time of the room the next day can be postponed.