72results about How to "Solve intermittent" patented technology

The present invention provides a solar boiler and a circulated thermal pipe, and relates to a solar collecting, conversion, heat transfer and heat exchanging device. The solar radiation is reflected and congregated to a heat absorption pipe arranged on a axial line of a reflector of single-curved surface by the reflector of single-curved surface, converted into heat energy after the absorption of sunshine by a coating layer, and the heat energy is delivered to a heat exchanger by a circulated thermal pipe, and the continuous working ranging from dozens of DEG C to 1,700 DEG C is achieved by the adoption of the working fluid of mutual solution. The circulated thermal pipe has automatic adjustment of the flow rate, rapid heat transferring of large power, large falling, long distance and small temperature differences, working of high temperature and low pressure, using of cold regions minus 40 DEG C and safe using. The present invention has lower failure rate by adopting a device intermittently and unified driving the reflector to track the solar device, stable and adjustable heating parameters by phase change thermal storage of paralleled connected small containers, multifunction and combined using of high, middle and low temperature, wide ranges of application, and can be used for the industrial heating of hydrogen production, power generation, refrigeration, freshwater production, pure water production, gas supplying, heat supplying, chemical and oil, etc.

The invention relates to a multi-source heat pump cold and hot water unit integrating solar energy, air energy and sleeve accumulated energy. The multi-source heat pump cold and hot water unit is mainly composed of a solar thermal collector, an energy storage heat exchanger, an outdoor air heat exchanger, a compressor, a thermal storage water tank, a user side heat exchanger, a gas-liquid separator, a heat collecting water pump, a user circulating water pump, an electromagnetic valve, a motor-driven three-way reversing valve, a motor-driven four-way reversing valve, a start-stop valve, a throttling valve, a one-way valve and the like; according to different outdoor climatic conditions, multiple operation modes such as direct solar heat supply, living hot water produced by solar, solar heat accumulation, heat supply of an energy storage heat pump, heat supply of an air source heat pump, energy storage and air source heat pump combined heat supply, living hot water produced by an air source heat pump, cold supply of air source heat pump, air source heat pump cold accumulation, heat pump cold accumulation and production of life hot water, and cold accumulation cold supply are realized. The complementary utilization of air energy and solar energy and two-way utilization of cold and heat of a heat pump unit are realized, and one set of equipment is adopted to realize heating, refrigeration, energy storage and living hot water supply.

The invention discloses a vehicle conveying device which comprises a support platform, a conveying part, a baring device and a dragging unit, wherein, the support platform is provided with a support surface; the conveying part comprises a pair of ring-shaped traction parts arranged in a conveying direction and used for dragging a vehicle in the conveying direction; the bearing device is arranged between the pair of ring-shaped traction parts, connected with the pair of ring-shaped traction parts, supported on the support surface, and used for bearing wheels of the vehicle; and the dragging unit is arranged between the pair of ring-shaped traction parts, connected to the pair of ring-shaped traction parts, and used for driving the vehicle to enable wheels of the vehicle to move together with the bearing device. Through adopting the ring-shaped traction parts circularly moving in the conveying direction, the continuity of the conveying operation is achieved, and then the conveying efficiency of the vehicle conveying device can be improved.

The invention relates to a stable wind driven generating device under air pressure/ hydraulic hybrid control. The device comprises a wind energy input system, a wind energy conversion system, an electricity generating system and a control system, wherein the wind energy input system, the wind energy conversion system and the electricity generating system are sequentially connected through couplings; the wind energy input system mainly comprises a wind power machine, a coupling and a hydraulic continuously variable transmission; the wind energy conversion system mainly comprises an air compressor, a pneumatic valve island, an air storage tank and an air motor and is used for completing energy storage and release; the electricity generating system comprises a coupling and a generator; and the control system is composed of a wind speed sensor, an input end rotation speed sensor, an air storage tank sensor, an output end rotation speed sensor, an output end torque sensor and a system controller. According to the changes of wind conditions, the stable wind driven generating device stores energy when the wind speed is high and releases energy when the wind speed is low so that the air motor is ensured to obtain continuous and stable rotation speed, the generator is not influenced by the changes of the environment, therefore the shortage of the traditional wind driven generating technology is overcome.

The invention discloses an AIS (Automatic Identification System) trajectory big data-based ship traffic environment reconstruction method. The method includes the following steps that: step 1-1, a time interval parameter is segmented so as to be divided into various time segments, the trajectory data of all ships in a specified geographical range within a time segment are only requested each time;step 1-2, a web front end temporarily stores the trajectory data in the step 1-1, preprocesses the trajectory data, and calculates and reconstructs the spatial relationship of the trajectory data; step 1-3, the web front end periodically requests new trajectory data from a server and performs dynamic update; and the step 1-1, 1-2, and 1-3 are repeated, so that the continuous reconstruction of a traffic environment can be realized at the web front-end. With the method adopted, an AIS data-based visualization technological means is provided for shipborne equipment and the equipment of a maritime supervision department, and inland navigation can be smoother, more orderly, safer and more efficient, and obvious economic and social benefits can be brought about.

The invention relates to a multi-energy-complementary heating and heat supply system of a nearly zero energy consumption building in an alpine region. The solar energy is combined with building foundation storage energy storage to achieve heating in winter, and the solar energy is combined with an air source heat pump to achieve domestic hot water supply. The multi-energy-complementary heating and heat supply system comprises a solar thermal collector, a heat storage coil, a heat-preservation foundation heat storage layer, a plate heat exchanger, warm air blowers, the air source heat pump, a hot water tank and the like. In non-heating seasons, the solar thermal collector is used for heating domestic water which is then stored in the water tank, and the air source heat pump is used for auxiliary heating if heat energy is insufficient. In heating seasons, part of hot water flows into the heat storage coil to be stored for standby use or to be used for supplying heat to the interior of a room through the warm air blowers, and the other part of the hot water flows into the plate heat exchanger to heat domestic water. When solar radiation is weak, the hot water flows from the building foundation heat storage layer into the warm air blowers to supply heat to the interior of the room, and the air source heat pump operates in daytime with the high temperature to heat domestic water which is then stored for standby use. According to the multi-energy-complementary heating and heat supply system of the nearly zero energy consumption building in the alpine region, renewable energy sources are utilized for multi-energy complementation to achieve heating and domestic heat supply of the alpine region in winter, and nearly zero energy consumption operation of the building can be achieved.

The invention provides a solar auxiliary air source heat pump device capable of realizing multimode operation. The system comprises a refrigerant circulation loop, a solar heat source loop and a solar cold-hot water loop. Solar energy is organically combined with an air source heat pump to solve the stability problem of solar auxiliary air source heat pump, realize high efficiency utilization of solar energy, simultaneously realize improvement of solar energy on performance of a heat pump system, and develop the solar auxiliary air source heat pump device capable of realizing multimode operation.

The invention provides a method for extracting the characters of a document, and the method comprises the steps: extracting a region with the same color as the color of a pattern from an image comprising a document character region and the pattern; carrying out the gray scale processing of the image, and obtaining a foreground region of the image, wherein the foreground region comprises the document character region and the pattern; extracting the contour shape of the pattern from the foreground region, wherein the color of a character document part in the contour shape is different from the color of the pattern; carrying out the fusion of the contour shape and the region with the same color, obtaining a public region, removing the public region in the foreground region, and obtaining the image which just comprises the document characters. The invention also provides a device for extracting characters of the document. The device employs the computer vision technology and the image processing technology, is suitable for image scanning, is also suitable for an image obtained through imaging equipment, also can be used for an electronic official document image, is wide in application range, and is universal.

The invention relates to a family stream media server based on a digital television network. The family stream media server comprises an audio/video interface and converting circuit connected with a wired digital television receiver, an audio/video encoding circuit, a central processing unit, a work storage, a program storage, a network interface circuit, a remote control output encoding circuit, a remote control transmitting output circuit, and a power supply circuit, wherein a network client can utilize the network interface circuit, the central processing unit, the audio/video encoding circuit and the audio/video interface and converting circuit at different places to watch digital television audio/video programs received by the wired digital television receiver in a live broadcast manner through the digital family stream media server. A user can carry out wireless remote control on a digital television set-top box at the different places by using the network interface circuit, the central processing unit, the remote control output encoding circuit and the remote control transmitting output circuit through the digital family stream media server, so as to realize digital television control functions including startup and shutdown of the wired digital television receiver, channel switching and the like. Therefore, the network broadcast of a family digital television is realized and the brand new digital life experience is brought to the user through Internet.

The invention relates to the field of catalysts, and discloses a catalyst for preparing 1,4-butanediol as well as a preparation method and an application thereof. The catalyst comprises a dispersant, a copper component, a zinc component and a modification component, wherein the dispersant is silicon dioxide, the modification component is selected from at least one metal component of bismuth, tin, vanadium, tungsten and molybdenum, preferably the modification component is selected from at least one metal component of bismuth and tin. The catalyst for preparing 1,4-butanediol is suitable for a hydrogenation reaction of bio-based succinic acid, can resist various impurities in the bio-based succinic acid, has excellent stability, and can hydrogenate succinic acid and succinic acid ester at the same time; the modification component improves adsorption performance and electronic overflow performance of the catalyst, and shows excellent hydrogenation selectivity.

The invention discloses a passive solar double-stage phase-change heat storage type heating device. The device is composed of a solar heat collector (1) and a radiator (2), wherein the solar heat collector (1) is mounted through a bracket (7), the solar heat collector (1) and the radiator (2) are connected through a water supply pipe (11) and a water return pipe (12), the device is characterized in that a high-melting-point phase-change material (9) fills the portion outside the water supply pipe (11) at the upper half part of the radiator (2), and a low-melting-point phase-change material (10) fills the portion outside the water return pipe (12) at the lower half part of the radiator (2). Compared with the prior art, the heating device absorbs the solar energy through the solar heat collector in the daytime, the surplus heat is stored in the phase-change material during heating, the heat is released at night for the indoor heating, so that while the room temperature of day and night is kept constant, the utilization efficiency of the solar energy is improved, the problem that solar energy is intermittent and unstable is solved, and the purpose of fully and comprehensively utilizing the solar energy is achieved.

The invention discloses an adaptive adjusting system applied to an electric vehicle and a distributed photovoltaic power generation system, and relates to the power grid load intelligent regulation and control field; the adaptive adjusting system comprises the distributed photovoltaic power generation system, the electric vehicle and a power distribution network; the distributed photovoltaic power generation system and the electric vehicle are connected with the power distribution network; the adjusting system also comprises a converter device; the distributed photovoltaic power generation system is connected with the electric vehicle and the power distribution network through the converter device. The system uses the electric vehicle charging adjustable characteristics to assist and solve the renewable energy intermittence problems, thus reducing the energy storage system cost; only the primary voltage converter device is needed between the distributed photovoltaic power generation system and a DC bus, thus realizing economical construction cost and higher power transmission efficiency; synchronization problems between various renewable energy forms and the circulation inhibition problem can be better solved; the DC-link essence has no harmonic wave factor interference, thus providing better electric energy quality.

The invention discloses an inductive current prediction independent convergence control method used in a bidirectional DC/DC converter. The method includes that inductive current independent prediction control is adopted to be combined with a steady-state prediction value to perform convergence operation processing on a predication result to enable the predication value to converge towards the steady-state prediction result; control duty ratios of corresponding power tubes are directly calculated through the prediction value and the steady-state prediction value, so that good current control effect is realized. By the method, quick and stable control on inductive current value of a main circuit can be realized, the problem of interruption and continuation of inductive current of the bidirectional DC/DC converter in the process of mode switching can be solved, and duty ratio of a switch tube can be acquired by directly inputting circuit parameters.

The invention provides a full-bridge IGBT drive circuit and an implementation method thereof. According to the invention, the two IO interfaces of the CPU are used as control signals at the same time;when the two control signal levels are the same; the IGBT driving signals are not output, the full-bridge circuit does not act, the driving signals are output and the full-bridge circuit acts only when one control signal is low and the other control signal is high, and when the levels of the two control signals are different and overturn at the same time, the driving signals are switched and theoutput voltage of the full-bridge circuit overturns, so that the problem of mutual exclusiveness is solved; the driving ends of the driving chips for controlling the opening and closing of the two groups of IGBTs are connected in series, and a current-limiting resistor is connected in series in a loop, so that the two groups of IGBTs for opening and closing operations are ensured to be simultaneously switched on and off, and the problem of synchronism is solved; the input ends of the two driving chips which are connected in series are connected with the small-capacity capacitor in parallel, the capacitor and the current-limiting resistor form an RC time-delay circuit, dead zone time delay of switching-on and switching-off operation is increased, immediate switching-off after switching-on or immediate switching-on after switching-off is prevented, and the intermittent problem is solved.

The invention discloses a double-stage backheating solar driven rotary wheel drying system and a running method thereof. The system comprises a regeneration air inlet fan, a first heat tube backheating device, a heat storage device, a solar heat collector, a circulating working medium pump, an auxiliary electric heating device, a rotary wheel dehumidifier, a second heat tube backheating device, aregenerated air outlet fan, a drying chamber inlet fan, a drying chamber, a drying chamber outlet fan and the like. The rotary wheel drying system is driven by solar light heat, a heat storage technology is adopted, the shortcoming of intermittence of solar energy is overcome, energy consumption is reduced, and meanwhile, by arrangement of the auxiliary electric heater, the stability of the systemis ensured. A double-stage backheating technology is adopted, and thus, the utilization rate of energy is maximized. In addition, the system has an open running mode and a closed running mode, can beadjusted for drying requirements and working conditions, and is wide in application range.

The invention relates to an alternating-current test device for bare switch operating characteristics of a transformer on-load tap-changer, and belongs to the technical field of transformer switches. The invention aims to provide a transformer on-load tap-changer bare switch operating characteristic alternating-current test device which carries out an operating characteristic alternating-current test in allusion to a bare switch of an on-load tap-changer. The test device provided by the invention is characterized in that the 220V alternating-current mains supply is connected through an interface P1 at first and then transmitted to a transformer T1 and an AC-DC conversion chip respectively through a switch S1, pins 5, 6, pins 3, 4 and pins 1, 2 of an interface IN are externally connected with the output ends of a phase A, a phase B and a phase C of the bare switch of the on-load tap-changer in series respectively, and an output interface of an operating circuit of each phase of the bare switch is equipped with a resistor R; and the pins 5, 6, the pins 3, 4 and the pins 1, 2 are internally connected to pins 1, 2 of the input ends of current sensors S, S2, S3 respectively, and the current sensors S1, S2, S3 respectively correspond to the phase A, the phase B and the phase C of the bare switch of the on-load tap-changer respectively. The alternating-current test device discovers and judges problems such as insufficient contact pressure of a switch contact and the like in allusion to the bare switch of the on-load tap-changer without a transformer winding, the test effect and the test efficiency are improved, and a burning accident of power grid main equipment is effectively prevented.

The invention relates to the technical field of heating, in particular to a photovoltaic coupling phase change heat storage wall panel composite heating system which comprises a solar photovoltaic panel, a container, a heat collector and a water circulation assembly, a phase change heat storage wall assembly is arranged on the outer side of the water circulation assembly, and the phase change heat storage wall assembly can store and release heat energy collected by the heat collector; a circuit assembly connected with the circuit output end of the solar photovoltaic panel through a wire is arranged at the circuit output end of the solar photovoltaic panel, the circuit assembly can store electric energy generated by the solar photovoltaic panel, the circuit assembly is electrically connected with the phase change heat storage wall assembly, and the phase change heat storage wall assembly can generate and release heat energy after the circuit assembly electrifies the phase change heat storage wall assembly. Heat storage and release of the phase-change materials are utilized, meanwhile, the auxiliary heating mode that storage battery power supply and power grid direct power supply are combined is adopted, the defect of a single heat source is effectively overcome, stable operation of the whole system is guaranteed, renewable energy sources are fully utilized, and the system is quite suitable for being used for heating in northern dry and cold areas of China.

The invention discloses a wind-solar-storage complementary distributed energy power generation system and a control method thereof. The system comprises a wind power generation device which is used for generating power through wind energy and outputting alternating current, a luminous energy power generation device which is used for generating power by utilizing luminous energy and outputting direct current, and an energy storage device which is used for storing electric energy to absorb redundant electricity when the voltage on a direct-current bus is higher than rated voltage, and is used for releasing the electric energy to maintain the stability of the voltage on the direct-current bus when the voltage on the direct-current bus is lower than the rated voltage, wherein the energy storage device adopts a hybrid energy storage mode of a storage battery and a fuel cell. While complementarity of wind energy and light energy in time and space is fully utilized, the energy storage device is added to solve randomness and intermittency of wind energy and light energy output power, and a reliable and safe control strategy can be provided for new energy grid connection.

The invention discloses a wind-solar complementary technology-based indoor lighting system. The wind-solar complementary technology-based indoor lighting system comprises a vertical axis wind turbine, a solar cell panel, a three-phase rectifier, a DC/DC (Direct Current to Direct Current) converter, a DC/AC (Direct current to Alternating Current) inverter, an MPPT (Maximum Power Point Tracking) controller, a gird-connected interface control device, an indoor controller, a sensor, an indoor colour adjustable light source, a 5V USB (Universal Serial Bus) interface, a control switch and the like. According to the wind-solar complementary technology-based indoor lighting system, the indoor light illumination and colour are controlled and better indoor lighting parameter values are obtained by designing a proportion parameter based on wind power generation and photovoltaic power generation and obtaining energy from a wind power generator and the solar cell panel.

The invention relates to the technical field of energy conservation in the iron and steel industry, in particular to a cascaded utilization system and method for waste heat of an oxygen production process. The cascaded utilization system comprises a primary air compressor, a secondary air compressor, a tertiary air compressor, a primary heat exchanger, a secondary heat exchanger, a tertiary heat exchanger, an oxygen generator, a refrigerating user, a heating user, a heat pump unit, a cooling tower, a water supply pool, a high-temperature water storage tank, a low-temperature liquid heat exchanger, a flow meter and various valves, wherein the valves are connected among the above devices. The cascaded utilization method for the waste heat of the oxygen production process has two operating models: one is the low-temperature heat exchanger non-operating mode and the other is the low-temperature heat exchanger operating mode. Consequently, the cascaded utilization of the waste heat of the oxygen production process for production and lift heating in the oxygen process can be achieved, and waste heat of the air compressors can be utilized for effectively adapting to the demand fluctuations of the heating user.

The invention discloses a solar heat-storage heat pump heating system which comprises a lithium bromide solution circulating system, a water circulating system and a solar heat-storage heating system. The lithium bromide solution circulating system is mainly composed of an absorber, a solution pump, a heat exchanger I, a solution adjusting valve, a heat exchanger II, a high pressure generator and a lower pressure generator, the water circulating system is mainly composed of the high pressure generator, the lower pressure generator, a condenser, a throttling valve, an evaporator, the absorber, the solution pump, the heat exchanger I , the solution adjusting valve and the heat exchanger II, and the solar heat-storage heating system is mainly composed of a solar heat-collection heat, a phase-changing heat-storage device and an electric-assisting heating device. The solar heat-storage heat pump heating system has the advantages that a solar heat system is enabled to be capable of storing heat and release heat under the circumstance of insufficient solar radiancy, the problem of intermittence in solar heating is solved, the solar heat-storage heating system is long in service life and low in electricity consumption, and the like.

The invention relates to the technical field of energy conservation in the steel industry, in particular to a system and method for recycling waste heat in an oxygen making process. The device comprises an air compressor primary compression part, an air compressor secondary compression part, an air compressor tertiary compression part, a primary heat exchanger, a secondary heat exchanger, a tertiary heat exchanger, an oxygen generator, a refrigeration user, a heat supply user, a 1# heat pump unit, a 2# heat pump unit, a cooling tower, a water supply pool, a high-temperature water storage tank,a low-temperature liquid heat exchanger, a flowmeter and various valves connected between the devices. The method for recycling waste heat in the oxygen making process comprises two operation models,namely, a low-temperature heat exchanger non-operation mode and a low-temperature heat exchanger operation mode. According to the system and method for recycling waste heat in the oxygen making process, the waste heat of the cooling water of an air compressor is directly and efficiently utilized, the problem of large unplanned, intermittent and instantaneous heating amount existing in low-temperature liquid oxygen heating is solved, and the effective utilization of the waste heat in the oxygen making process in production and life is realized. The waste heat utilization efficiency of the system is improved, and the system has the characteristics of saving energy, reducing maintenance cost and the like.