19results about How to "Reduce initial investment" patented technology

The application provides a public area ventilation and air conditioning system with a machine room arranged in the middle of a subway station, and relates to the technical field of heating, ventilation and air conditioning of subway stations. The ventilation and air conditioning system with the machine room arranged in the middle of the subway station is configured for a three-floor underground subway station, in which the first floor is a station hall floor, the second floor is an equipment floor, and the third floor is a platform floor. A fresh air shaft and an exhaust air shaft are arranged in the middle of the subway station, and the fresh air shaft and the exhaust air shaft are configured for the inlet and outlet air of the whole station. A public area environment control machine room is arranged in the middle of the station hall floor, a refrigeration machine room, an environment control machine room for equipment management rooms and a heat exhaust machine room are arranged in the middle of the equipment floor. The environment control machine room, the refrigeration machine room, the fresh air shaft and the exhaust air shaft are arranged in the middle of the station, the number of new exhaust shafts is reduced compared with the conventional two-end arrangement of the station, the large system equipment arrangement is simplified, the area of the environment control machine room is reduced, the construction cost is reduced, the energy consumption is reduced, and the system energy efficiency is improved.

The invention belongs to the field of smart communities and artificial intelligence, and particularly relates to a community life service agent system, which comprises a data acquisition module used for acquiring multi-modal original data in a community, and an edge decision module comprising a data fusion unit, a workflow engine unit, an RAG enhancement unit and a code generation unit, the intelligent workflow generating module is used for performing fusion analysis and matching on the sensing data or dynamically generating an intelligent workflow and generating a decision instruction; and the terminal execution module is used for receiving and executing the decision instruction and feeding back a result. According to the method, the existing sensing equipment of the community is reused, and a'sensing-decision-execution 'closed loop is constructed on the edge side, so that active and intelligent services of community management are realized, and the deployment cost and the data security risk are remarkably reduced at the same time.

This utility model discloses a modular intelligent narrow-body frequency converter cabinet system, comprising: a narrow-body cabinet with internal module installation space, air inlet, and air outlet; a modular backplane system integrating a main circuit busbar and a control / auxiliary power bus; at least one standard functional module with standardized mechanical and electrical interfaces, pluggably installed in the cabinet and connected to the backplane system for implementing specific power conversion or control functions; and an intelligent thermal management system including a temperature sensor, an adjustable-speed fan, and a fan controller, capable of adjusting the fan speed according to temperature information to control airflow within the cabinet. This utility model, through modular design and intelligent thermal management, achieves high system integration, excellent maintainability, flexible configuration capabilities, and efficient heat dissipation, making it suitable for high-power frequency converter applications in industrial drives, new energy, and other fields.

The application discloses a novel biogas slurry membrane filtration device based on silicon carbide membranes, comprising: a silicon carbide membrane assembly, which is composed of four groups of membrane groups in parallel connection, and two ends of each group of membrane groups are connected with a shunt pipe and a collection pipe; each group of membrane groups comprises four silicon carbide tubular membrane tubes, and the four silicon carbide tubular membrane tubes are connected in series, each silicon carbide tubular membrane tube is provided with a plurality of large through-hole structures along the axial direction thereof, the diameter of the large through-hole structure is 8 mm, and the pore size of the membrane tube is 150 nm; and a cleaning assembly connected with the silicon carbide membrane assembly and used for cleaning the silicon carbide membrane assembly according to a preset mode. The application has stronger anti-clogging performance, is suitable for anaerobic biogas slurry treatment with high solid content and more organic fiber components, effectively alleviates the problems of scaling and fiber winding and clogging, and solves the problem of membrane strength through the thickening design of the membrane tube spacing.

This invention discloses a high-pressure hot water thermal energy storage phase change constant-pressure system and method for compressed air energy storage power stations, belonging to the field of compressed air energy storage. It includes an atmospheric pressure cold water storage tank, at least one high-pressure hot water storage tank, an energy storage heat exchanger, an energy release heat exchanger, a cold water circulation pump, and a constant-pressure system. A steam space is reserved at the top of the high-pressure hot water storage tank. The constant-pressure system includes a condenser and a high-pressure hot water buffer tank. The constant-pressure system maintains the pressure stability inside the high-pressure hot water storage tank by condensing steam and buffering pressure fluctuations. During energy release, the hot water is driven by the steam pressure inside the high-pressure hot water storage tank, eliminating the need for a hot water circulation pump. This invention, through cold and hot water separation, steam phase change constant-pressure design, and a pump-free design, significantly reduces the number and pressure levels of high-pressure hot water storage tanks, lowers equipment investment, and simultaneously improves thermal storage temperature and system efficiency, providing an efficient and economical solution for the large-scale application of compressed air energy storage power stations.

The application discloses a flue gas-waste steam residual heat recovery large-temperature-difference heat supply system and method for power plants and heat source plants, solves the problem of low energy utilization efficiency in the prior art, has the beneficial effects of saving water and electricity and realizing full utilization of energy, and specifically has the following arrangement: the flue gas-waste steam residual heat recovery large-temperature-difference heat supply system for power plants and heat source plants comprises a flue gas residual heat recovery unit, a condenser, and a heat supply boiler; the flue gas residual heat recovery unit comprises a first heat exchanger, and treated flue gas enters the flue gas residual heat recovery unit for residual heat recovery; the waste steam residual heat recovery unit comprises the condenser; the condenser is connected with the heat supply boiler; the flue gas residual heat recovery unit is connected in series with the heat supply boiler; the heat supply unit comprises a first water supply pipeline, the heat supply boiler and the waste steam residual heat recovery unit are connected in series with the first water supply pipeline, a first branch of a second water return pipeline is heat-exchanged with the first water supply pipeline through a second heat exchanger, and the second heat exchanger is provided with the first water return pipeline and a second water supply pipeline.

The invention relates to the technical field of carbon dioxide recovery, and discloses a carbon capture waste heat recycling system based on double-side direct expansion heat exchange, which comprises an absorption tower, a desorption tower and a high-temperature heat pump loop, a first heat exchange unit is arranged in the absorption tower, and the first heat exchange unit comprises a finned tube type heat exchanger and is used for recovering flue gas waste heat; a second heat exchange unit is arranged in the desorption tower, and the second heat exchange unit comprises a spraying type heat exchanger and is used for providing heat for pregnant solution desorption; a refrigerant channel of the high-temperature heat pump loop is sequentially connected with the first heat exchange unit and the second heat exchange unit, so that an energy utilization system for transferring flue gas waste heat to a desorption tower is formed, an energy flowing path in the carbon capture system is reconstructed, the core pain point of high energy consumption is solved from the source, and the energy utilization efficiency of the carbon capture system is improved. And multiple beneficial effects of energy conservation, efficiency improvement, cost reduction and simplification are achieved.

The application discloses a compressed air energy storage power station vertical shaft and spherical tank combined heat storage constant pressure system and method, and belongs to the technical field of compressed air energy storage, wherein the system comprises a heat storage and heat exchange unit, a vertical shaft cold storage unit, a nitrogen temperature control and constant pressure unit and a nitrogen supplement unit; the method is realized based on the system and comprises energy storage, energy release, constant pressure stabilization and nitrogen supplement steps. The application stores low-temperature water in an artificial underground chamber vertical shaft, replaces traditional cold water spherical tanks, reduces the number of spherical tanks, reduces the design pressure of the spherical tanks through nitrogen temperature control and regulation, breaks through the heat storage temperature improvement bottleneck, can significantly improve the efficiency of the energy storage power station, reduces the initial investment and operation cost of the system, reduces pressure fluctuation and prolongs the service life of equipment.

The invention relates to the technical field of chilled water transmission and distribution and heat exchange, in particular to a cascade coupling large-temperature-difference water chilling unit system and an operation method. The cascade coupling large-temperature-difference water chilling unit system comprises a low-temperature water chilling unit, a medium-temperature water chilling unit, a water segregator, a water collector, an MAU unit, a conventional air conditioner, a variable-frequency water pump and a connecting pipeline. According to the invention, a series temperature change path of cold supply, temperature rise, mixing, stepped pre-cooling and re-cooling is formed; and the medium-temperature water chilling unit is arranged to precool the mixed high-temperature return water at a middle temperature point, so that the temperature of water entering the low-temperature water chilling unit is remarkably reduced, the load of the low-temperature water chilling unit is reduced, and water is supplied to the tail ends with different temperature requirements according to quality through the water segregator. The cascade temperature change process is matched with the intelligent control subsystem to adjust the flow and the temperature in real time, so that the system achieves large-temperature-difference transmission and distribution, meanwhile, the power consumption of the variable frequency water pump and the initial investment of pipelines are greatly reduced, and the system is suitable for energy-saving occasions with large cooling radiuses and various tail end loads.

This invention belongs to the field of industrial water treatment technology, specifically relating to a system and method for simultaneous hardening and silica removal from high-salt, high-calcium wastewater. It includes a primary reaction unit, a primary sedimentation unit or a primary flocculation sedimentation unit, a secondary reaction unit, a secondary flocculation sedimentation unit, and a neutralization unit connected sequentially along the water flow direction. The primary reaction unit is a simultaneous hardening and silica removal unit using sodium sulfate / sodium aluminate, sodium sulfate / magnesium salts, or sodium sulfate. The secondary reaction unit is a dual-alkali hardening removal unit or a dual-alkali / magnesium salt simultaneous hardening and silica removal unit. This invention employs a two-stage synergistic hardening removal method of "sodium sulfate + dual-alkali hardening removal," combined with a silica removal process, to simultaneously achieve silica and hardening removal. By reducing the concentration of hardness ions and silica in the water in stages and in a targeted manner, it gradually controls them to the low levels required for deep treatment, thereby simultaneously shortening the process flow, reducing the footprint, and lowering the reagent costs during operation.

This utility model discloses a hot water supply system with an adjustable on / off water supply mode, comprising: a heat source, a first port, a hot water tank, a variable frequency pressurization device, a second port, and a third port; the heat source is connected to the first port via a hot water supply pipeline, and a first valve is also provided on the hot water supply pipeline, located close to the first port; a water supply branch is connected to the hot water tank on the hot water supply pipeline, and a second valve is provided on the water supply branch; the hot water tank is connected to the first port via the variable frequency pressurization device, and a third valve is provided between the hot water tank and the variable frequency pressurization device; a fourth valve is provided between the variable frequency pressurization device and the first port; the second port is connected to the inlet pipe of the heat source via a hot water return pipe; the third port is connected to the inlet pipe of the heat source via a domestic water supply pipeline. This application achieves the switching of the hot water supply system mode by controlling the opening and closing of valves, solving the problem of the limited applicability of a single system.

The present application relates to desulfurization technical field, specifically to a kind of under-liquid slurry supply desulfurization absorption tower and desulfurization method thereof, including tower body, spray layer, oxidizing air pipe, slurry circulating pump, gypsum discharge pump and agitator, further including a under-liquid slurry supply pipeline, slurry pool is equipped in the tower body, slurry supply outlet is equipped on the under-liquid slurry supply pipeline, the slurry supply outlet is arranged on the lateral wall of slurry pool area, the slurry supply outlet position is higher than the effective stirring depth of the agitator paddle, but lower than the slurry pool liquid level position of traditional under-liquid slurry supply.The present application makes that gypsum quality is radically improved, system efficiency and energy saving are remarkable, limestone utilization rate approaches theoretical optimum value, system adaptability is strong, investment potential is big.

This invention discloses a vortex tube refrigerator and a method for improving the performance of a heat pipe in permafrost. The method monitors the ambient temperature: when the temperature is below the critical value for low-temperature stability in permafrost, it enters an acceleration mode, where a high-pressure air pump draws air to enhance convective heat dissipation in the condensing section; when the temperature is above the critical value, it enters a pressurization mode, where compressed air generates a cold airflow through the vortex tube and is input into the condensing section of the heat pipe through heat exchange tubes, forcibly activating the gas-liquid phase change cycle inside the heat pipe; a proportional-integral control law is used to adjust the opening of the hot-end regulating valve to stabilize the cooling temperature below the target value; simultaneously, the exhaust outlet airflow is directed to a wind turbine to increase power generation, and it also features active defrosting. This invention achieves efficient year-round operation of the heat pipe, reducing cooling energy consumption and engineering costs.

The invention discloses a beneficiation process for improving the magnetic iron recovery rate through wide-particle-fraction tailing grading magnetic separation, and belongs to the technical field of beneficiation. According to the invention, fine-grain tailings after wet-type pre-selection and classification and micro-fine-grain tailings generated by stage grinding separation and elutriation and concentration are subjected to pre-classification operation, and underflow and overflow generated by classification are subjected to magnetic separation by utilizing the advantages that a disc type magnetic separator has a good coarse particle recovery effect and a cage type magnetic separator has a good fine particle recovery effect; coarse and fine particles containing magnetic iron in tailings are recovered in a balanced manner, so that the technical effect of improving the magnetic iron recovery rate of the wide-fraction tailings is achieved, the effects of resource recovery and comprehensive utilization and compliance and yield increase are achieved, meanwhile, the whole improvement does not cause waste and tailing pre-shunting of existing equipment, the equipment consumption and initial investment can be effectively reduced, and the economic benefit is improved. The system processing capacity is improved, the improvement cost is relatively low, and the method is suitable for large-scale production.

This invention provides a paste filling system and method based on a conventional high-efficiency thickener and filter press, belonging to the field of mine tailings filling technology. The system includes a thickening unit, a diversion pipeline, a filter press unit, a mixing unit, and a conveying unit. This invention initially concentrates low-concentration tailings slurry to obtain a high-concentration underflow, which is then divided into two streams. One stream is processed into a low-moisture filter cake by the filter press unit, while the other stream remains as a high-concentration underflow. Subsequently, two-stage mixing and stirring are performed to prepare the filling paste, which is then conveyed to the filling area. Through a concentration adjustment process of diversion-filter press-remixing and a homogenization process of two-stage stirring and step-by-step feeding, this invention replaces traditional deep cone thickeners or vertical sand bins, solving the problems of high cost, easy rakeing, high overflow solids content, and large concentration fluctuations in existing systems. It achieves precise control of paste concentration, stable and reliable system operation, and a significant reduction in filling costs.

The invention provides an energy storage and steam supply system and a cooperative control method thereof, a multi-energy power generation subsystem at least comprises small-scale multi-energy power generation units arranged in a distributed manner and a grid-connected conversion device, and the grid-connected conversion device is connected to a user side low-voltage power distribution bus; the heat storage and steam supply subsystem at least comprises an electric heater, a heat storage unit and a steam generation heat exchanger, and the electric heater is electrically connected with the low-voltage power distribution bus and is in heat interaction connection with the heat storage unit so as to perform heating and heat storage on a heat storage medium by utilizing electric energy from the multi-energy power generation subsystem and / or a power grid; the heat storage unit is in heat interaction connection with the steam generation heat exchanger so as to transfer heat to feed water through a high-temperature heat storage medium and generate and output industrial steam; the energy management subsystem is in communication connection with the multi-energy power generation subsystem, the heat storage and steam supply subsystem and the power grid and used for collecting operation data of the multi-energy power generation subsystem, the heat storage and steam supply subsystem and the power grid in real time and controlling the heat storage and steam supply subsystem to conduct heat charging, heat discharging and operation mode switching according to the collection result.

The invention discloses a flue gas trapping method for a gantry type cutting machine, which is realized through a flue gas trapping device and comprises the following steps: firstly, starting a circulating fan and a dust removal mechanism, then starting cutting work, and under the suction action of the dust removal mechanism and the circulating fan, enabling cutting flue gas to enter a double-channel negative pressure air pipe through a double-air-pipe sliding connector, wherein one part enters the dust removal mechanism through the dust removal cavity to be purified, and the other part sequentially enters the connecting pipe, the circulating air positive-pressure pipe and the positive-pressure air pipe sliding connector through the circulating cavity and is discharged through the positive-pressure air pipe sliding connector. The gas exhausted from the positive pressure air pipe sliding connector passes through the lower portion of the cutting platform to capture the cutting smoke and then enters the double-air-pipe sliding connector again, and the process is repeated. On the premise of keeping 95% of trapping efficiency, the ventilation quantity of the dust removal system can be reduced by 40%, the operation energy consumption of the system is reduced by about 36%, and the environment-friendly and low-carbon effects are good.

The application discloses a flue gas desulfurization and denitrification purification treatment system, which comprises an adsorption tower, a regeneration tower and a reaction tower. The adsorption tower is provided with an adsorbent, so that the flue gas enters the adsorption tower and the sulfur oxides and nitrogen oxides in the flue gas are removed by the adsorbent. The regeneration tower is connected with the adsorption tower, so that the saturated adsorbent enters the regeneration tower and is desorbed and regenerated. The reaction tower is connected with the regeneration tower, so that the regenerated gas desorbed and regenerated by the regeneration tower enters the reaction tower to produce salt, and part of the tail gas produced by the reaction tower enters the regeneration tower to carry the regenerated gas and flow out of the regeneration tower. In the application, part of the salt production tail gas is used as protective gas to replace nitrogen, so that the use amount of nitrogen in the regeneration tower is reduced, and the operation cost and initial investment of the system are reduced. In addition, the salt production tail gas is rich in pollutants, so that the concentration of pollutants in the regenerated gas can be effectively increased, and the salt production reaction in the subsequent reaction tower is facilitated.

The invention discloses a mine energy-saving cooling device and method utilizing freezing shaft remaining cold energy, and the method comprises the steps: 1, after saline water in a remaining freezing pipe is emptied, the inner wall of the remaining freezing pipe is subjected to rust removal treatment, and the transformed remaining freezing pipe is obtained; 2, the transformed remaining freezing pipe serves as a heat exchange part, and air is pressurized through a cold conveying and power unit and then conveyed into the transformed remaining freezing pipe; 3, the air exchanges heat with a low-temperature freezing wall outside the pipe and a surrounding stratum in the process of flowing downwards along the reformed remaining freezing pipe; and 4, the cooled air flows out of the bottom of the reformed remaining freezing pipe and then is conveyed to the working face through the cold energy tail end distribution unit, and after the working face is cooled, the cooled air is discharged out of the mine through the air return unit and conveyed to the cold conveying and power unit again. According to the method, the problem of mine heat damage can be solved by effectively utilizing the cooling capacity left in the well building period, and huge environmental and social benefits are generated in the aspects of saving energy, reducing consumption, reducing carbon emission and the like.