71results about How to "Reduce initial investment" patented technology

The invention relates to a tunnel ponding early warning method and device, computer equipment and a storage medium. The method comprises the steps that at least two first flow detection units are arranged at an inlet and an outlet of a tunnel, at least one second flow detection unit is arranged at a water outlet of the tunnel, local water accumulation threshold values of a plurality of water accumulation sensitive areas are determined based on historical water accumulation data, and the local water accumulation threshold values are arranged according to the threshold values to obtain a threshold value distribution sequence; dividing the threshold distribution sequence into a first sequence and a second sequence based on a preset proportion, and determining a first global threshold by a local ponding threshold at the boundary of the first sequence and the second sequence; calculating the inlet and outlet flow difference according to the first flow data and the second flow data, and further determining the water accumulation amount; and adjusting a second global threshold value according to the ponding risk index, and starting a corresponding risk early warning strategy when the ponding amount exceeds the first global threshold value or the second global threshold value. Low-cost and high-precision tunnel ponding monitoring is realized based on simplified sensing data, and the safety of tunnel passage is improved.

The invention relates to an air conditioner temperature and humidity independent control system and method based on two-stage coil chilled water. On the basis of the existing chip plant temperature and humidity independent control based on a fresh air processing unit, a return air drying and cooling coil and a fan filtering unit, low-temperature chilled water outlet of a water chilling unit firstly passes through a fresh air re-cooling coil; return water obtained after the temperature of the fresh air re-cooling coil pipe rises serves as water supply of the fresh air pre-cooling coil pipe and the return air cooling dry coil pipe, so that two-stage coil pipe chilled water is formed, and the return water of the fresh air pre-cooling coil pipe and the return water of the return air cooling dry coil pipe are mixed and then serve as chilled water return water of the water chilling unit. By increasing the return water temperature of the water chilling unit, the average evaporation temperature of an evaporator of the water chilling unit is increased. A bypass is arranged between an inlet and an outlet of the return air cooling dry coil, and the air temperature in the plant is controlled by adjusting the bypass flow through an electric two-way adjusting valve and a PID controller. Compared with the prior art, the invention has the advantages of high unit energy efficiency ratio, low refrigeration energy consumption, simplified system and the like.

A fused salt energy storage coupled CO2 air source heat pump water heater cascade energy storage steam supply system comprises a first-stage energy storage system and a second-stage energy storage system, the first-stage energy storage system comprises a softened water tank, and a water inlet of the softened water tank is connected with a water outlet of a softened water treatment device through a water conveying pipeline; a water outlet of the softened water tank is connected with a water inlet of a heated channel of a condenser of the carbon dioxide air source heat pump water heater through a softened water pipe connected with a softened water pump in series, and a water outlet of the heated channel of the condenser is connected with a water inlet of the heat storage water tank through a first-stage hot water pipe. A high-temperature and high-pressure gaseous carbon dioxide inlet of the heat dissipation channel of the condenser is connected with a circulating medium outlet of the carbon dioxide compressor through a pipeline. According to the cascade energy storage and steam supply system of the fused salt energy storage coupled CO2 air source heat pump water heater, the electricity price advantage of electricity in the off-peak period is fully utilized, the operation cost of a steam supply system of an enterprise can be reduced, and finished steam with the lower cost is provided for the enterprise.

The integrated dehumidification air-conditioning ventilation system comprises a dehumidification air-conditioning unit, an air supply main vertical pipe and an air return main vertical pipe, wherein the dehumidification air-conditioning unit is arranged on the roof of the multi-storey storehouse; the air supply main vertical pipe and the air return main vertical pipe are arranged in the multi-storey storehouse in a penetrating manner; a first electric fresh air valve is arranged on a first fresh air pipe of the dehumidification air conditioning unit, and an air supply pipe is connected with an air supply main vertical pipe; the main air supply vertical pipe is provided with air supply branch pipes communicated with all the storerooms, each storeroom is internally provided with an air return branch pipe, a temperature sensor and a humidity sensor, each air supply branch pipe is provided with an air supply electric air valve and an air supply outlet, each air return branch pipe is provided with an air return inlet and an air return electric air valve, and the other end of each air return branch pipe is connected with the main air return vertical pipe. The device is simple in structure, convenient to use, low in initial investment and high in automation degree, the operation content of workers is simplified, and the purposes of saving energy and reducing consumption are achieved.

The invention discloses a breeding system based on a fan single pile foundation and a control method of the breeding system. The breeding system comprises a breeding cabin bottom, a liquid level monitoring device, a water circulation device, an aeration oxygenation device, a ventilation device, an automatic feeding device, a water quality monitoring device, a fry throwing and fish collecting device, an underwater monitoring device, a power supply device and a control system. According to the method, inexhaustible seawater resources are utilized, an open circulating water mode is adopted, the temperature and salinity of a water body do not need to be adjusted, the culture environment in the most original state is simulated, the original life habits of fingerlings do not need to be changed, and the quality of the culture variety is improved; meanwhile, a fan single-pile foundation is combined, the original useless internal space and electric energy produced by a wind field are reasonably utilized, wind power cultivation is fused, the method is green and low-carbon, a water body foundation does not need to be additionally built, the comprehensive cost is reduced, and the overall yield of equipment is increased.

The utility model discloses a different-stroke type buried pipe loop hydraulic balance structure applied to single well control, which comprises at least one buried pipe group, and the buried pipe group comprises a water segregator, a water collector and a plurality of buried pipes; each buried pipe is correspondingly buried in a pipe well, the pipe wells are arranged in an isosceles right triangle shape, the water segregator and the water collector are arranged at the midpoint of the hypotenuse of the isosceles right triangle, the pipe wells are symmetrically arranged in the isosceles right triangle with the perpendicular bisector of the isosceles right triangle as the boundary, and the closer the buried pipes are to the water segregator and the water collector. And the buried depth is deeper. On the premise that the number of the buried pipes is not changed, hydraulic balance of a system meets requirements, energy consumption of a water pump is reduced, and operation cost of the system is reduced by changing the division mode of the buried pipe group, changing the pipeline arrangement mode of the horizontal connecting pipes and adjusting the buried depth of the vertical buried pipes; meanwhile, the number of sub-catchers is reduced, and initial investment is reduced.

The invention provides a photovoltaic photo-thermal coupling distributed energy complementary energy supply system and method, and the system comprises a gas power generation system which comprises a gas turbine generator set. The waste heat boiler system comprises a waste heat boiler; the steam turbine power generation system comprises a steam turbine generator set; the photovoltaic and photo-thermal power generation system comprises a photovoltaic and photo-thermal integrated device; the waste heat exchange system comprises a first heat exchange device and a second heat exchange device; according to the system, energy flow between systems is optimized in a heat energy recovery and multi-energy coupling mode, the energy utilization efficiency is improved, and the operation cost is reduced. According to the invention, waste heat of the back plate of the photovoltaic module is utilized to preheat natural gas at an inlet of the gas turbine and make-up water of the waste heat boiler in advance, so that the problems of a cooling cold source of the back plate of the photovoltaic module and freezing prevention in a low-temperature environment are solved, and the problems of corrosion of a turbine nozzle of the gas turbine and low-temperature corrosion of a boiler mortgage economizer are solved; waste heat generated by the photovoltaic module is deeply coupled with the natural gas heating system and the waste heat boiler feed water waste heat system.

The utility model discloses a cooling, heating and domestic hot water multi-combined supply efficient heat pump, which comprises an air-conditioning side system and a water side system, the water side system is connected with the air-conditioning side system, the water side system is connected with a combined control switch module, the use requirements of cooling / heating and domestic hot water can be simultaneously met through a set of heat pump equipment, and meanwhile, the heat pump equipment can be used for heating and domestic hot water supply. And in transition seasons and when no air conditioner cooling and heating requirements exist, the equipment can be used for making domestic hot water, the requirements of users for cooling and heating at different times and in different scenes are met, the equipment utilization rate is increased, and the initial equipment investment of the users is reduced.

The utility model belongs to the technical field of dust removal devices, and particularly relates to a dust removal system with a standby dust removal fan device, which is characterized in that a standby dust removal fan is further arranged in the dust removal system; the air inlet end of the standby dust removal fan is connected with a third three-way pipe through a pipeline, one end of the third three-way pipe is communicated with the first three-way pipe through a first branch pipe, the other end of the third three-way pipe is communicated with the second three-way pipe through a second branch pipe, and a first butterfly valve and a second butterfly valve are installed on the first branch pipe. A first connecting piece is arranged between the first butterfly valve and the second butterfly valve; a third butterfly valve and a fourth butterfly valve are installed on the second branch pipe, a second connecting piece is installed between the third butterfly valve and the fourth butterfly valve, and one of the first connecting piece and the second connecting piece is connected and the other one is disconnected according to process requirements. The standby dust removal fan has the advantages that the standby dust removal fan can be quickly connected into a coke dust removal system or a coal dust removal system, so that the dust removal system is ensured to stably operate and meets the requirements of relevant specifications.

The invention provides a distributed SAR time-frequency synchronization method and device. The method comprises the following steps: determining a local pseudo range of a satellite in a distributed SAR system relative to a Beidou satellite navigation system; and adjusting a reference frequency source signal corresponding to a satellite in the distributed SAR system based on a Beidou satellite navigation system to obtain a reference frequency source signal. And the first satellite opens the inter-satellite link according to the reference frequency source signal corresponding to the first satellite. And sending a first local pseudo range corresponding to the first satellite to a second satellite in the distributed SAR system based on the inter-satellite link. A clock difference of the second satellite relative to the first satellite is determined based on the second local pseudorange and the first local pseudorange. And adjusting the frequency of a voltage-controlled constant-temperature crystal oscillator of the second satellite based on the clock difference. According to the method provided by the invention, time-frequency synchronization between satellites can be realized simply and efficiently at low cost.

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 present invention provides an enhanced multi-mode multi-effect absorption energy storage and release device and an operation method thereof. The device comprises: a first solution tank, a second solution tank, a refrigerant tank, a first compressor, and a second compressor. The present invention utilizes two solution tanks, two compressors, and a refrigerant tank and the connecting pipelines involved to realize an enhanced multi-mode multi-effect absorption energy storage and release cycle, which is particularly suitable for medium-temperature heat sources of 120 to 200°C, and can effectively realize the recovery of condensation heat as a concentrated heat source, realize multi-effect operation, and greatly improve the energy storage efficiency; and the present invention, with the assistance of the compressor, reduces the demand for energy storage temperature, is compatible with the use of low-temperature heat sources, and has a higher energy storage density than ordinary absorption energy storage systems. During the energy release process, by connecting the two solution tanks, it is possible to share the cooling water heat exchanger, ensure a longer energy release supply time, and achieve a stable energy release effect.

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.

The application relates to the technical field of building engineering, and discloses an energy-saving anti-permeability and anti-cracking control system for a basement waterproof board. The system comprises: a holographic sensing unit for real-time monitoring of stress, cracks and water environment; a thermal energy regulation unit for balancing temperature difference through medium circulation; a prestress compensation unit for interfering with cracks by using a shape memory alloy; a water pressure relief unit for adjusting water level and recycling energy; and an intelligent core for fusing multi-source data and outputting an optimal strategy. The system establishes a closed-loop system from holographic sensing to active intervention, realizes early discovery and compensation of micron-level cracks, solves the problems of passive control cracks, high energy consumption and lack of real-time feedback in the prior art, improves the anti-permeability reliability of the waterproof board, realizes coupling management of energy flow and structural stress flow, and has remarkable green energy-saving and whole-life-cycle intelligent maintenance effects.

The present invention relates to a two-stage lithium bromide absorption heat pump unit with single-effect heating and double-effect refrigeration, and belongs to the technical field of refrigeration equipment. The unit comprises a steam generator I, a condenser I, an evaporator I, an absorber I, a heat exchanger I, a solution pump I, a refrigerant pump I, a steam generator II, a low-pressure generator, a condenser II, an evaporator II, an absorber II, a heat exchanger II, a solution pump II, a refrigerant pump II, a stop valve A, and a stop valve B. The two-stage lithium bromide absorption heat pump unit with single-effect heating and double-effect refrigeration of the present invention is switched by valves. When the heating condition is operated in winter, the unit operates according to the two-stage heat pump principle; when the refrigeration condition is operated in summer, the unit operates according to the steam double-effect solution parallel refrigeration process. At the same time, the refrigeration performance coefficient of the double-effect refrigeration is greatly improved, steam consumption is saved, one machine has two uses, the initial investment of the equipment is reduced, and the floor space is saved.

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.

The invention discloses a method for arranging gas sensors. The method comprises the following steps: collecting related gas parameters of a subway tunnel during operation; performing risk evaluation on each point location by using a probability-influence-based risk evaluation method, and determining an importance index of each node; according to the subway tunnel ventilation network diagram and the determined monitoring effective level, a subway tunnel gas monitoring system sensor layout optimization model based on quantitative risk evaluation is generated through a maximum coverage site selection model; the optimization model is solved based on a branch pricing algorithm, an optimal gas sensor layout strategy is obtained, and the gas sensor layout strategy in the subway tunnel comprises determination of gas sensor layout points. And a distributed sensor arrangement strategy is adopted, so that the coverage capability of the system on each part of the subway tunnel is enhanced, and the flexibility and expansibility of the whole system are improved. The safety of the subway tunnel is improved, and the economic cost of the monitoring system is reduced.

The present invention relates to the technical field of granulation equipment, and specifically discloses a granulator suitable for organic fertilizer production, which includes a machine body, a granulation disk and a driving device, a plurality of aggregate grids are arranged outside the granulation disk, and a movable bottom plate is rotatably fixed at the lower end of each aggregate grid; a door opening mechanism, a cooling device and an arc body are fixed on the machine body, and during the rotation of the granulation disk, each movable bottom plate cooperates with the door opening mechanism in turn to open the lower port of the aggregate grid; the cooling device collects the particles discharged from the aggregate grid and performs cooling treatment; the arc body is hollow inside and connected to a hot air supply device, and an exhaust hole is opened on the arc body. The granulator adopts an integrated compact design, realizes the continuous operation of granulation, drying and cooling, shortens the production process, improves production efficiency, reduces initial investment and subsequent operation and maintenance costs, can significantly reduce the generation of returned materials and reduce the energy consumption of equipment operation, is extremely suitable for granulation processing in organic fertilizer production, and has broad application prospects.

The invention provides a refrigerating unit and a control method thereof, the refrigerating unit comprises a compressor, a condenser and an air cooler, the air cooler is a double-coil air cooler and comprises a refrigerating coil and a dehumidifying coil, an exhaust pipe of the compressor is divided into three branches, the three branches comprise a refrigerating exhaust pipeline, an inlet is provided with a refrigerating electromagnetic valve, and an outlet is provided with a one-way valve; wherein the condenser is connected; an inlet of the heating and dehumidifying exhaust pipeline is provided with a dehumidifying electromagnetic valve, an outlet of the heating and dehumidifying exhaust pipeline is connected to an inlet of the dehumidifying coil pipe, an outlet of the dehumidifying coil pipe is connected to an inlet of the heating and dehumidifying liquid return pipeline, and an outlet of the heating and dehumidifying liquid return pipeline is provided with a one-way valve; an inlet of the defrosting exhaust pipeline is provided with a defrosting electromagnetic valve, and an outlet is provided with a one-way valve; an outlet of the refrigeration exhaust pipeline and an outlet of the heating and dehumidifying liquid return pipeline are connected to an inlet of the liquid supply pipeline, an outlet of the liquid supply pipeline is connected to an inlet of the refrigeration coil, and an outlet of the refrigeration coil is connected to a first inlet of the compressor through an air return pipeline. According to the refrigerating unit provided by the invention, one set of refrigerating and condensing unit can meet the temperature and humidity double-index requirements, the combined operation of the refrigerating unit and a rotary dehumidifier is not needed, and the initial investment is reduced; a refrigerant defrosting method is adopted, the defects of high energy consumption and large warehouse temperature fluctuation caused by traditional electric defrosting are overcome, and energy-saving operation and low warehouse temperature fluctuation of the cold storage are achieved.

The invention relates to an independent liquid tank, a liquid cargo tank and a liquid carbon dioxide transport ship, and belongs to the technical field of liquefied gas transport ships, the independent liquid tank comprises a plurality of valve bodies which are integrally connected, at least two valve bodies are located at the bottom of the independent liquid tank, longitudinal bulkheads are arranged between the valve bodies at the bottom, and liquid tank left and right valve body openings are formed in the bottom of the longitudinal bulkheads; two valve bodies on two sides of the longitudinal bulkhead are communicated through liquid, and one valve body can be provided with a liquid tank pump. The C-shaped independent liquid tank with the multiple petal bodies is adopted, the tank capacity can be effectively increased, and the plate thickness and weight of the independent liquid tank can be effectively controlled; a single liquid tank pump is only arranged in the valve body on one side of the liquid tank, so that the number of the pumps can be greatly reduced, and the initial investment is reduced; two exhaust chambers are arranged on the cargo tank area deck surface, so that the deck arrangement can be effectively simplified.

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 utility model discloses a coating electrophoresis energy storage type cooling device and a control system. The control system controls starting and stopping of a refrigerating machine, a refrigerating machine chilled water pump, an energy storage tank chilled water pump, electric valves in front of and behind the refrigerating machine, electric valves in front of and behind the energy storage tank chilled water pump and an electric three-way regulating valve. The device is applied to engineering practice, cold is stored for the energy storage tank in the off-peak electricity period, cold is supplied for the coating electrophoresis process through the water-water heat exchanger, and in the non-off-peak electricity period, only the chilled water pump of the energy storage tank needs to be started, chilled water in the energy storage tank needs to be extracted, and cold is supplied for the coating electrophoresis process through the water-water heat exchanger. The initial investment of engineering practice is relatively saved, the operation effect of the refrigerating machine can be improved after reasonable operation, the electricity utilization cost in the non-off-peak electricity period is saved, the standby power supply utilization rate in the non-off-peak electricity period is reduced, and the energy-saving effect and economic benefits are good.

The invention provides a refrigeration and heat supply circulation system coupled with carbon dioxide energy storage, and relates to the technical field of energy storage circulation, energy storage circulation is carried out based on conversion of a carbon dioxide critical state by taking carbon dioxide as a working medium, and cold and hot self-circulation in the refrigeration and heat supply circulation system is carried out through heat exchange. The cold and heat storage module is coupled to the carbon dioxide energy storage sub-module through the energy storage heat exchanger to conduct internal heat exchange of the refrigeration and heat supply circulation system, and heat exchange is conducted through the combination of the carbon dioxide energy storage sub-module and external energy. The refrigeration and heat supply module is coupled to the carbon dioxide sub energy storage module through the refrigeration and heat supply heat exchanger to conduct heat exchange between the refrigeration and heat supply circulation system and the outside, and the problems that an energy storage circulation system is low in energy utilization rate, large in environmental influence, low in system efficiency and unstable in energy utilization are solved. And the effects of improving the system efficiency, ensuring the stability of energy supply of the whole system and realizing zero carbonization of the technology are achieved.

The application discloses an industrial control system data standardization management method and device. The method comprises the following steps: formulating a four-level structured data naming specification composed of workshop codes, equipment numbers, parameter type codes and measuring point serial numbers, wherein the parameter type code is taken from a closed code set with complementary, mutually exclusive and hierarchical semantic relationship constraints; using a native alias mechanism to establish a decoupling mapping layer from original variable names to standard variable names in the configuration layer of the industrial control platform without modifying the control logic of the underlying programmable logic controller; performing standard compliance checking on the code and mapping layer based on the semantic relationship constraints; and according to the version revision, scanning the affected entries in the mapping layer, generating an update list and performing dynamic updating. The application realizes gradual standardization of data expression of multi-brand heterogeneous industrial control systems, and has the characteristics of version traceability and standard evolution without production stoppage and hardware replacement.

The invention discloses a joint optimization method for a mechanical vapor recompression system and a reverse osmosis system. The joint optimization method comprises the following steps: establishing a reverse osmosis superstructure network model, a reverse osmosis unit model, a mechanism model of the mechanical vapor recompression system and economic models of the reverse osmosis system and the mechanical vapor recompression system; establishing an optimal design model of the reverse osmosis system combined with the mechanical vapor recompression system by taking the lowest total annual cost as an objective function and relating to related design variables; and solving the established optimization model, processing a differential equation therein, converting a problem into a mixed integer nonlinear programming problem, and solving by adopting a mixed integer nonlinear programming solver to obtain a joint system design structure under the lowest total annual cost. According to the invention, the actual level of design and operation of the combined system is improved, the utilization rate of water resources is improved, and the initial investment and operation maintenance cost required by the system are reduced, so that the total annual cost is reduced, and the economic benefit is improved.

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 utility model discloses a water source heat pump energy supply system which comprises a water source heat pump main machine, a heat source water pipeline is arranged on the water source heat pump main machine, and the system is connected with a sewage source through the heat source water pipeline. A filtering device and a water volume adjusting device are sequentially connected between the heat source water pipeline and the sewage source in series, the water volume adjusting device comprises a first water tank and a second water tank, the first water tank is a fixed water tank, the front end of the first water tank is connected with a water inlet, and the second water tank is assembled on a movable support. The first water tank can move up and down relative to the first water tank through the movable bracket; and the bottom of the other side, opposite to the water inlet, of the first water tank is communicated with the second water tank through a communicating pipe, so that the second water tank can adjust the water storage amount in the water amount adjusting device according to the communicating vessel principle through the action of moving up and down. The device has the advantages of high efficiency, energy conservation, stable and reliable operation, remarkable environmental benefit, good operation effect, remarkable economic benefit and easiness in popularization.

The present invention belongs to the technical field of power plant accessories application, and specifically discloses a permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of a power plant, including a wind tube, a motor housing, a main shaft, a group of bearings, a circular outlet cavity, a cooling water cavity, an explosion-proof junction box, a stator, a rotor, a lubricating oil circulation duct, a hub, a plurality of blades, a group of oil filling pipes and an automatic lubrication device. The beneficial effects of the permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of a power plant of the present invention are: 1. It has the characteristics of high efficiency, low speed, high torque, and high power. After being equipped with a controller / inverter, the speed can be adjusted from zero to the maximum; 2. The outer rotor transmission replaces the transmission system composed of the traditional motor, reducer, and hydraulic coupling, and the equipment layout saves a lot of space and saves initial investment; 3. The operation and maintenance of on-site electromechanical equipment is greatly reduced, saving manpower and maintenance materials, low failure rate, and reduced production accidents.