44results about How to "Reduce the difficulty of running" patented technology

The invention discloses a hierarchical cavity type solar heat absorber which comprises a solar reflector and heat absorbers, and is characterized in that the heat absorbers comprise an independent primary heat absorber and an independent secondary heat absorber, namely a primary heat absorber with an evaporation heating surface and a secondary heat absorber with an overheating heating surface, wherein the evaporation heating surface and the overheating heating surface are connected through a steam pocket. The invention has the beneficial effects that as condensers and the heat absorbers are arranged in a targeted manner, the heat-flow density can be effectively distributed, the safety of the heat absorbers is ensured and the operation difficulty is reduced; the tube wall thickness of the heat absorbers can be properly increased so as to improve the pressure rating of a working medium and the unit efficiency; and the condensers are arranged in groups and the heat-flow density of each part in a heat receiver is controlled within a reasonable range so that temperature near the heat receiver can be reduced and the solar heat radiation loss after focusing is reduced.

An embodiment of the invention provides an internet based hydropower-station centralized control system and method. The hydropower-station centralized control system is characterized in that at least one hydropower station is in communication connection with a centralized control center through the internet; the centralized control center comprises a centralized control center host and at least one hydropower station operator workstation connected with the centralized control center host through the local area network; the hydropower station operator workstations perform remote data acquisition and monitoring control functions on the centralized control center host; the hydropower stations and the centralized control center are physically isolated from the internet through a network one-way isolation device so as to ensure that the hydropower stations and the centralized control center are avoided from attacking from the internet. The internet based hydropower-station centralized control system and method has the advantages that hydropower station operators can perform remote centralized data acquisition and monitoring control functions on the multiple scattered hydropower stations, monitoring operation and management difficulty on the hydropower stations is lowered, and operation cost is lowered.

The invention relates to a tail flue gas waste heat utilizing system of an utility boiler based on hot blast recycling. The tail flue gas waste heat utilizing system comprises a boiler water supply regenerative heating device and a boiler tail flue gas waste heat utilizing device, wherein the boiler water supply regenerative heating device is provided with a low-pressure heating unit, a high-pressure heating unit, a deoxygenizing unit and a water supply pump, which sequentially communicate; low-pressure extraction steam generated after work application of steam generated by the boiler is used by the low-pressure heating unit as a heat exchanging heat source; and high-pressure extraction steam generated after work application of steam is used by the high-pressure heating unit as a heat exchanging heat source. According to the tail flue gas waste heat utilizing system disclosed by the invention, a circulating hot wind is utilized as a heat-transfer medium, so that the temperature level and the heat-into-power conversion efficiency of the flue gas waste heat recycled by the water supply regenerative system are improved, the purpose that the electricity supply efficiency of an electricity generating system is substantially improved is realized, the investment and the operation control difficulty of a waste heat recovery system are reduced, the problems of the corrosion, the ash deposition and the abrasion of the waste heat recovery system are solved, the cold end low temperature corrosion of an air preheater is avoided, besides, newly building a bypass flue is not needed, the system is compact in technological process, and the construction of the engineering is facilitated.

The invention provides a seeder capable of automatically removing soil. The seeder comprises a rack, a land wheel and a press wheel. The land wheel is arranged on the front end of the rack in a rotation mode while the press wheel is arranged on the back end of the rack in a rotation mode. The back of the land wheel is provided with a furrow opener, a seeding outlet and a covering device in sequence. The furrow opener and the covering device are fixed on the rack. The seeding outlet communicates with a sowing box fixed on the rack. The rack is provided with an engine which is connected with the press wheel through a belt. Below the rack, a scraper is arranged in front of the press wheel which cooperates with the scraper. The scraper is connected with a torsion shaft fixed with the rack through a joint lever. The end of the torsion shaft is fixedly sleeved with a torsion handle. The seeder has the advantages of automatically removing soil on the press wheel and reducing labor cost.

Provided is a tidal power generation system for full-time continuous power generation. The system comprises a reservoir and a power generating device. The reservoir comprises a main reservoir and a tail reservoir, and the main reservoir is adjacent to the tail reservoir and is independent to the tail reservoir. The power generating device is arranged on a dam foundation of the main reservoir, the power generating device is mainly formed by a base, dam piers, an upper beam, a flashboard and a hydro-generator, the base is fixed on the dam foundation of the main reservoir, the dam piers are arranged on the two sides of the base respectively, the upper beam is fixed at the tops of the dam piers, an elevator is arranged on the upper beam, a frame-shaped rack is formed by the base, the dam piers on the two sides and the upper beam, the flashboard and the hydro-generator are assembled in the frame-shaped rack, the flashboard comprises a front flashboard and a rear flashboard which are arranged on the front side and the rear side of the hydro-generator respectively, the hydro-generator is transversely arranged, the flashboard and a pull rod of the hydro-generator are respectively extended to the top of the upper beam to be connected with the elevator, and water discharged from the main reservoir is led into a flowing water area or the tail reservoir through lifting control of the flashboard. The tidal power generation system for full-time continuous power generation has the advantages of being small in construction and operation difficulty, low in operation cost, high in reliability and the like.

The invention provides a seeding machine convenient to reverse to cover soil. The seeding machine comprises a rack, a ground wheel and a pressing wheel, wherein the ground wheel and the pressing wheel are respectively installed on front and back ends of the rack; a furrow opener, a seed feed opening and a covering device are arranged behind the ground wheel in sequence; the covering device comprises two scrapers symmetrically arranged on the seeding machine, and the two scrapers are further connected with a reversing mechanism. The seeding machine provided by the invention can effectively improve the soil covering efficiency by means of the adjustment of the reversing mechanism.

An auxiliary drive electric trailer flat car used for goods and luggage transportation comprises an electric trailer flat car body, at least one electric motor, a drive controller, a signal receiver and a power supply, wherein the electric trailer flat car body mainly comprises a supporting plate, and two front wheels and two rear wheels arranged at the front and back of the bottom surface of the supporting plate; the two front wheels are connected by a front axle; the two rear wheels are connected by a rear axle; the electric motor is installed at the axle; the drive controller is connected with the electric motor and a central controller arranged on a trailer truck; the signal receiver is connected with the drive controller and the central controller; the power supply is electrically connected with each electric component. According to the invention, on the basis of the electric drive characteristics of goods and luggage transportation at the civil aviation airport, under the condition that total power of the whole system is constant, power arrangement is dispersed, the whole is broken into parts, mutual cooperation is realized, and under the principles of optimizing power and lowering the operation difficulty and manufacturing costs, the overall performance of a transport vehicle system is improved and the load distribution of energy medium is improved.

The invention discloses a canned reactor coolant pump locking cup local video inspection method. The method comprises the following steps of S1, installing a soft guide pipe extending to a position near an inspection space at an inspection inlet of a canned reactor coolant pump, wherein the inspection space is located between a thrust bearing and a locking cup both in the canned reactor coolant pump; S2, extending an endoscope probe into the inspection space along the soft guide pipe; and S3, operating the endoscope probe to enable the endoscope probe to circularly move along the inspection space to inspect the locking cup. According to the method, the video inspection can be carried out on the locking cup of the canned reactor coolant pump in the high-radioactivity environment of a localcanned motor pump of a nuclear power plant, the endoscope probe is guided to reach the interior of the inspection space through the soft guide pipe so that the endoscope probe can complete a pluralityof 90-degree turns in a narrow space, and the video inspection on the surface of the locking cup of the canned motor pump is completed; and the operation is convenient, the inspection efficiency is high, the tools are simple, the investment is low, the inspection period is short, the equipment of the power plant is free of any damage, and the inspection cost of the power plant is greatly saved.

The invention relates to a two-stage A / O partial short-range series fixed bed multi-stage A / O autotrophic denitrification device and method, belonging to the technical field of urban sewage biological treatment. The main body of the process is composed of four parts: urban sewage raw water tank, continuous flow A / O partial short-range device, intermediate water tank and fixed bed multi-stage A / O autotrophic denitrification device. The short-path is realized in the A / O reactor through process adjustment, and the short-path sludge generated in the A / O reactor is directly fed into the multi-stage A / O autotrophic denitrification device in the later stage to maintain the autotrophic denitrification in the latter stage. nitrogen. The present invention can not only reduce the amount of sludge, but also make the front and rear stages have denitrification effect at the same time, and finally realize the stable, deep and efficient denitrification of the system.

The invention discloses a treatment device and treatment method for glass fiber production wastewater. The wastewater is treated in stages, a wastewater flow dividing device is arranged, through monitoring of the attenuation degree of an infrared laser, the amount of impurities in the wastewater is judged, the more the impurities in the wastewater, the more the attenuation of the infrared laser, and the weaker the signal detected by an infrared sensor; and when the amount of the impurities in the wastewater is smaller, the wastewater directly enters a second water treatment device for softening treatment, and when the amount of the impurities in the wastewater is larger, the wastewater enters an SBR firstly for a reaction, then the reacted wastewater enters the second water treatment device for softening treatment. The treatment device and treatment method for the glass fiber production wastewater provided by the invention can perform targeted treatment according to the amount of the impurities in the wastewater, have good wastewater treatment effects, can effectively improve the treatment efficiency of the wastewater, and reduce the treatment costs.

The invention discloses a 3D printing slicing method, which is characterized in that (1) using computer-aided design software to establish a three-dimensional model of a product to be printed; (2) performing slice processing on the three-dimensional model, and cutting the model along the vertical direction Separated into several slices, wherein at least part of the layer formed by the slices is a curved surface layer, the intersection line between the curved surface layer and the vertical cut surface is a sinusoidal distribution curve, and a regular and uniform peak-valley distribution is formed on the slice surface ; (3) According to the layered slice information obtained in step (2), print the model layer by layer. The invention greatly increases the strength of the device obtained by 3D printing without changing the adhesiveness of the material itself, and facilitates the realization of model reconstruction.

The invention discloses a humidification desulphurization sweeping device for a tail flue of a coal-fired boiler, and belongs to the technical field of coal-fired boiler desulphurization. The humidification desulphurization sweeping device is matched with a flue gas humidification activation or calcium-adding desulphurization technical device for the tail flue of the coal-fired boiler; damp falling ash generated by a flue gas humidification desulphurization technology are effectively removed under certain temperature and pressure through flue gas generated by the coal-fired boiler, and blocking caused by a fact that the falling ash is attached to the flue is prevented. The sweeping device is mounted in a space formed among a coal-fired boiler economizer, an air preheater and a dust remover and mainly comprises a gas conveying pipeline, a cyclone separator, a draught fan, a flue gas connection box and a gas outlet connection pipe. Part of the ash-containing flue gas is discharged from the flue at the outlet of the air preheater and the flue at the outlet of the economizer; due to separation of the cyclone separator, most of the ash is removed; then the flue gas enters the flue gas connection box and then enters the tail flue through the gas outlet connection for tail flue sweeping. The humidification desulphurization sweeping device is simple in structure and smaller in investment; the problem of scaling caused during desulphurization running is reduced, and the humidification desulphurization efficiency at the tail part is improved.

The invention discloses an auxiliary monitoring system and method for an unattended mode pipe gallery tunnel. The system includes a control unit; the pipe gallery tunnel includes an SF6 exhaust channel, a patrol channel and a main channel; ventilation valves are arranged between adjacent channels; the patrol channel SF6 exhaust fans are installed at both ends of the SF6 exhaust channel; multiple SF6 sensors, temperature and humidity sensors, Harmful gas sensor and oxygen sensor; the output terminals of the SF6 sensor, temperature and humidity sensor, harmful gas sensor and oxygen sensor, and the control terminals of each ventilation valve, blower and exhaust fan are respectively connected to the control unit. The invention can monitor the environment in the pipe gallery, and can control the environmental parameters of the pipe gallery according to the actual working conditions or required working conditions. Detection and response efficiency in the event of an accident.

The invention discloses a hierarchical cavity type solar heat absorber which comprises a solar reflector and heat absorbers, and is characterized in that the heat absorbers comprise an independent primary heat absorber and an independent secondary heat absorber, namely a primary heat absorber with an evaporation heating surface and a secondary heat absorber with an overheating heating surface, wherein the evaporation heating surface and the overheating heating surface are connected through a steam pocket. The invention has the beneficial effects that as condensers and the heat absorbers are arranged in a targeted manner, the heat-flow density can be effectively distributed, the safety of the heat absorbers is ensured and the operation difficulty is reduced; the tube wall thickness of the heat absorbers can be properly increased so as to improve the pressure rating of a working medium and the unit efficiency; and the condensers are arranged in groups and the heat-flow density of each part in a heat receiver is controlled within a reasonable range so that temperature near the heat receiver can be reduced and the solar heat radiation loss after focusing is reduced.