12results about How to "Meet supply needs" patented technology

The invention provides an integrated heat recycling type catalytic micro-combustor for marine equipment and a preparation method, and relates to the technical field of clean fuel catalytic combustion under the microscale. The integrated heat recycling type catalytic micro-combustor comprises a micro-combustor shell, and two sets of symmetrically-arranged partition plates are arranged on the inner side of the micro-combustor shell; the two sets of partition plates divide the interior of the miniature combustor shell into a first preheating channel, a gas outlet channel and a second preheating channel, the gas outlet channel comprises a combustion chamber and a gas outlet which are sequentially communicated, a bluff body is arranged on the inner side of the gas outlet channel, and concave cavities are formed in the partition plates and correspond to the combustion chamber in position. The inner side of the air outlet channel and the outer side of the bluff body are coated with a catalyst; according to the invention, the preheating channel is arranged to set the micro-combustor to be in a backheating form, unburned gas in the micro-combustor is preheated by tail gas after gas intake, so that the gas obtains a higher initial temperature in the micro-combustor, and the design optimizes the high-speed limit of mixed gas in the micro-combustor, strengthens the heat cycle in the combustor and effectively reduces the heat loss.

The invention discloses recombinant escherichia coli with high yield of N-acetylneuraminic acid and application of the recombinant escherichia coli, and relates to the technical field of biological genetic engineering. The invention relates to a recombinant escherichia coli, which is characterized in that the escherichia coli is taken as a host, and free expression of an N-acetylmannosamine epimerase gene yihS from Streptomyces xiamenensis or an N-acetylmannosamine epimerase gene ce3 from Bacteroides polymorpha and an exogenous N-acetylneuraminic acid lyase gene nano A is carried out; and carrying out recombinant expression on N-acetyl hexosamine 1-kinase nahK, a UDP-N-acetyl glucosamine pyrophosphorylase gene glmU and a UDP-N-acetyl glucosamine-2-epimerase gene neuC in the other synthetic route of the ManNAc. According to the recombinant escherichia coli with high yield of N-acetylneuraminic acid, the yield of N-acetylneuraminic acid can reach 23.08 g / L under a shake flask fermentation condition; a two-stage batch feeding strategy is adopted, the yield of N-acetylneuraminic acid in a 5L fermentation tank reaches 71.25 g / L, the molar conversion rate of GlcNAc reaches up to 57.60%, and the method has the potential of industrial application.

The invention discloses a water supply pipe network optimized supply scheduling system based on big data analysis, relates to the technical field of water supply pipe network optimization, and solves the problems that in the prior art, scheduling constraint analysis cannot be performed on a water supply pipe network after a scheduling decision is executed, the scheduling efficiency cannot be ensured, and the scheduling efficiency cannot be ensured. The technical problem that scheduling optimization cannot be carried out in combination with real-time water supply conditions in the scheduling stage is solved, specifically, scheduling constraint analysis is carried out on the water supply pipe network, scheduling of the water supply pipe network is adjusted through the scheduling constraint analysis, the supply scheduling efficiency of the water supply pipe network is improved, scheduling regulation and control can be conveniently carried out when the supply scheduling efficiency is abnormal, and the scheduling efficiency is improved. Efficient supply scheduling of the water supply network is ensured, the influence of a supply deviation area of the water supply network can be effectively compensated, and the water supply efficiency of the whole water supply network is ensured; the scheduling supply analysis is performed on the water supply network, and whether the scheduling of the current water supply network needs to be optimized or not is deduced by combining the operation characteristic analysis of the scheduling supply water pump, so that the scheduling efficiency of the water supply network is improved.

This invention provides a method for the artificial breeding of bullfrogs, including bullfrog selection, pairing, breeding, artificial spawning induction, artificial insemination, fertilized egg hatching, and tadpole rearing. This invention uses precise control of water temperature and quality in the breeding water to stimulate the gonadal development of the bullfrogs. It utilizes artificial spawning induction, insemination, fertilized egg hatching, and seedling rearing techniques to solve the problems of existing bullfrog germplasm degradation and difficulties in artificial breeding. By adding *Lactobacillus rhamnosus* to the feed, the mortality rate of bullfrogs is effectively reduced, the hatching rate of fertilized eggs is high, and the seedling growth rate is fast. This allows for a stable and continuous supply of high-quality bullfrog stock, meeting the effective demand for bullfrog seedlings throughout the year, and providing a technical foundation for the artificial breeding of bullfrogs.

The utility model relates to the technical field of hot water equipment, and discloses modularized fuel gas efficient heat exchange hot water equipment which comprises a protective outer frame, a controller is embedded in the position, close to one side, of the front end of the protective outer frame, a heat exchange pipe is fixedly arranged in the protective outer frame, and the heat exchange pipe comprises a water container. A plurality of connecting strips are fixedly arranged in the water container, and fire tubes are fixedly arranged among the interiors of the connecting strips. According to the utility model, through the structural design of the fire tube and the water container, the layout of the water-in-pipe is realized, the heating area is increased, the residence time of gas in the fire tube is prolonged by the industrial grade stainless steel S-shaped welding fire tube group, the heat energy exchange efficiency is greatly improved, the modularization can be expanded in parallel, the occupied area of a single module is small, and the horizontal installation is supported; the intelligent temperature control system is suitable for various spaces, achieves accurate temperature adjustment and on-demand starting and stopping through intelligent control, is convenient to operate, safe and reliable, and is widely suitable for commercial and civil scenes.

This application provides a method and system for dynamic prediction and decision-making regarding the transportation costs of power materials, belonging to the field of power Internet of Things and intelligent supply chain management technology. The method involves: constructing and dynamically updating a Regional Logistics Capability Index (LCI) covering several administrative units based on multi-source data collected from transportation infrastructure data sources, freight platforms, historical waybill databases, and environmental early warning platforms; collecting shipment information, material characteristics, and route information for the target power material transportation task, and inputting this information, along with the corresponding LCI, into a pre-trained transportation cost prediction model to calculate the predicted transportation cost and confidence interval for the target transportation task; and applying the predicted transportation cost and confidence interval to at least one supply chain decision in intelligent supplier selection, risk control for changes in shipping location, and / or the generation of differentiated inventory strategies. This application improves the accuracy of transportation cost prediction, optimizes supply chain decision-making, enhances resilience, and reduces costs.

The utility model discloses an energy accumulator, which relates to the technical field of fluid energy storage equipment and comprises an energy accumulator body, a piston, a heavy hammer and an air bag, the energy accumulator body comprises an energy accumulator cylinder body; the lower portion of the energy accumulator cylinder body is provided with an oil inlet connector, an oil discharge connector and an oil supply port, and the upper portion of the energy accumulator cylinder body is provided with an oil recovery port. The piston, the heavy hammer and the air bag are arranged in the energy accumulator cylinder body; the heavy hammer is arranged above the piston; an air bag is arranged in a central groove in the lower part of the piston; the piston lifting device comprises a driving unit and a pulley mechanism; the driving unit is connected with the pulley mechanism, and the pulley mechanism is connected with the piston, so that when the piston, the air bag and the heavy hammer act together, the effect of the heavy hammer energy accumulator which assists in increasing the pressure regulating reaction speed through the air bag is achieved; or when the driving unit, the pulley mechanism, the piston, the heavy hammer and the air bag act together, the effect of the heavy hammer energy accumulator which can adjust the output pressure through the driving unit and can assist in improving the pressure adjusting reaction speed through the air bag is achieved.

The embodiment of the invention provides a heat pump water heater, a control method and device of the heat pump water heater and a computer readable storage medium. The control method of the heat pump water heater comprises the steps that the outdoor environment temperature and the exhaust pressure and the suction pressure of a compressor are obtained; the pressure difference value of the exhaust pressure and the suction pressure of the compressor is determined; and the rotating speed of an outdoor fan is controlled according to the outdoor environment temperature and the pressure difference value.

The invention discloses cylindrical wheel saw blade sorting equipment and a sorting method thereof, and relates to the technical field of saw blade sorting, a concentricity detection system of a first detection station is used for obtaining concentricity deviation data between an outer circle axis and an inner circle axis of a saw blade base body reaching the first detection station; the master control system sends concentricity deviation data to the data processing module to be compared with standard parameters, the saw blade base body is conveyed to the next station after the concentricity detection is qualified, and otherwise, the saw blade is grabbed to a defective product box; the shock resistance detection system of the second detection station is used for applying set pressure to the tool bits on the saw blade base bodies and obtaining shock resistance information of the tool bits, the main control system sends the shock resistance information to the data processing module to be compared with the standard parameters, the tool bits are conveyed to a good product box after it is judged that shock resistance detection of the tool bits is qualified, and otherwise the saw blades are grabbed to a recycling box. Automatic saw blade sorting is achieved, the leak detection prevention effect reaches 100%, the saw blades are prevented from breaking and hurting people, the sorting efficiency is improved by at least three times, and the cost is saved.

The utility model relates to a novel heating system which comprises a water tank, a circulating water pump, a steam heating heat exchanger, an electric heater, a PLC (Programmable Logic Controller), a water pipe, a steam pipeline and a steam proportioning valve, the water tank, the circulating water pump, the steam heating heat exchanger and the electric heater are connected in series through the water pipe to form a water heating loop, a steam proportioning valve is installed on a steam pipeline, and the output end of the PLC is connected with the electric heater and a steam proportioning valve power supply; when steam is supplied, the PLC is used for disconnecting the power supply of the electric heater and connecting the power supply of the steam proportioning valve; when no steam is supplied, the power supply of the electric heater is turned on, and the power supply of the steam proportioning valve is turned off. The heating mode of domestic water in the wine making workshop is effectively improved, steam generated by the wine making workshop is fully utilized, steam heating and electric heating are adjusted through the PLC, the requirement for hot water in the steaming stopping period is met, the steam direct injection heating mode is changed into pipeline heat exchange, device vibration is avoided, and the service life of the water tank is prolonged.

The invention provides a construction method of a prefabricated yard shaped like a Chinese character'ji 'and a seaport wharf concrete member, and belongs to the technical field of building construction.The construction method comprises the following construction steps that S1, the prefabricated yard shaped like the Chinese character'ji' is built, a land area prefabricated area shaped like a Chinese character'ji 'comprises an exclusive prefabricated pedestal, a storage and maintenance pedestal and a shipping channel, and a sea area adaptive structure shaped like the Chinese character'yue' comprises a leveling base and a base bottom beam; s2, exclusive pedestal prefabricated parts on the two sides; s3, the trolley pushing component is moved to the shipping channel along the transverse track; s4, the concrete member is subjected to rail switching operation, and the transportation direction is switched from the transverse direction to the longitudinal direction; s5, the concrete member is conveyed to the matching structure in the shape of the Chinese character'yue 'in the sea area through the trolley and slides to the ship machine; and S6, when the ship engine is replaced, recombining the shore and the base bottom beam. According to the construction method, through construction of the 'L'-shaped prefabricating yard and the coherent construction process, the prefabricating and shipping efficiency of the seaport wharf concrete members can be improved, different ship machines can be flexibly adapted, the transformation construction period can be shortened, and the adaptation cost can be reduced.

The utility model discloses a four-pipe air-cooled heat pump waste heat utilization system and a building, the system comprises a four-pipe air-cooled heat pump, a water-water heat exchanger and a high temperature type water source heat pump, a cold water circulation pump is arranged on a cold water loop of the four-pipe air-cooled heat pump, and a hot water circulation pump is arranged on a hot water loop of the four-pipe air-cooled heat pump; a hot water loop of the four-pipe air-cooled heat pump is provided with a first branch and a second branch which are connected in parallel, the first branch passes through a heat source channel of the water-water heat exchanger, the second branch passes through a heat source channel of the high-temperature water source heat pump, the inlet end of a temperature rising channel of the water-water heat exchanger is connected with a first water supply pipe, and the outlet end is connected with a low-temperature hot water outlet pipe. The inlet end of a temperature rising channel of the high-temperature type water source heat pump is connected with a second water supply pipe, and the outlet end of the temperature rising channel of the high-temperature type water source heat pump is connected with a high-temperature hot water outlet pipe. Valves are arranged at the inlet and outlet ends of the first branch and the second branch, upstream and downstream of the connecting pipe on the first water supply pipe and the low-temperature hot water outlet pipe, upstream and downstream of the connecting pipe on the second water supply pipe and the high-temperature hot water outlet pipe. According to the system, the waste heat of the four-pipe air-cooled heat pump can be used for preparing high-temperature hot water, the supply requirement of domestic hot water is met, the waste heat of the four-pipe air-cooled heat pump can also be used for preparing low-temperature hot water, other application requirements are met, and the waste heat of the four-pipe air-cooled heat pump is fully used.