65results about How to "Reduce construction scale" patented technology

The rail transportation system of small vehicles is used to replace available underground railway and light rail system, and has small driverless vehicles running in closed rail. The system consists of vehicles, closed rails and stations, the vehicles are computerized automatic ones, the closed rails is provided with vehicle controlling equipment, and the vehicles are started from stations randomly for express service from station to station. The present invention has the advantages of great traffic amount similar to that of main stem transportation, personalized service, low construction investment and low running expensive. It may be used for both passenger transport and cargo transport, and municipal rail transportation network may be constructed.

The invention relates to a three-axis magnetometer closed loop test method and system based on dynamic earth magnetic field simulation. A three-axis magnetometer is placed inside an enclosed earth magnetic field simulator to shield interference of an external environment electromagnetic field and a local earth magnetic field; a high-precision IGFR earth magnetic field model is adopted, the earth magnetic field intensity of an aircraft on a track is calculated according to the track information of the aircraft, and the intensity is converted into current outputs to drive the earth magnetic field simulator to generate a corresponding magnetic field; the three-axis magnetometer measures the intensity of the magnetic field generated by the earth magnetic field simulator in real time and outputs the intensity to a spaceborne computer to assist other attitude sensors in conducting attitude and navigation solution; and magnetron currents and control instructions needed for attitudes are also calculated. In this way, closed loop control is formed. A corresponding relation between simulator drive currents and the magnetic field intensity of the simulator is calibrated through the high-precision three-axis magnetometer, and external interference is compensated by means of correction. During a closed loop simulation test process, the precision of the magnetic field generated by the simulator is increased by means of real-time monitoring and dynamic closed loop correction.

This invention discloses a nickel cobalt oxide ore pressure ore oxygenation leaching method, which includes the technique flow of milling the nickel cobalt oxide paste, adding sulfur powder paste or sulfuration refining paste, high-pressure still oxidization, automatic steaming of flash groove, flocculating agent adding, 7-grade reflux thick cleaning, distilling nickel cobalt and comprehensively recycling bitter salt. It has high leaching ratio of leaching nickel cobalt metals and the relative components. This invention greatly improves the present method that adds pressure and acid dips nickel cobalt oxide ores and lowers the investment, reduces the operation workers, saves the energy and improve the environment, lowers the cost and expands the utilization range of this leaching method and can comprehensively uses the other components.

The invention discloses a fire protection foam system for a fire truck. The fire protection foam system comprises a water pot and a foam liquid pot which are used for storing fire protection media, a water pump and a foam pump which are used for pumping the fire protection media, a fire nozzle for outputting the fire protection media, a foam uniformly mixing tube and an air compressor, wherein the outlet of the foam uniformly mixing tube is communicated with the inlet of the fire nozzle, and the inlet of the foam uniformly mixing tube is respectively communicated with the liquid outlet of thewater pump and the liquid outlet of the foam pump; and the compressed air outlet of the air compressor is communicated with the inlet of the foam uniformly mixing tube. The fire protection foam system for the fire truck is provided with compressed air supply equipment; when the fire protection foam system is used, the compressed air and mixed liquid of water and foams firstly enter the foam uniformly mixing tube and are pre-foamed and then jetted by the fire protection fire nozzle with low water consumption. On the basis of the fire protection foam system, the invention also provides the firetruck, which comprises a chassis, a lifting arm frame, a working platform and the fire protection foam system for the fire truck; and the working platform is connected with the chassis through the lifting arm frame.

The invention discloses injecting equipment and an environment simulation system based on the injecting equipment, wherein the injecting equipment and the environment simulation system are used for the direct connection test of a novel stamping engine. According to the technical scheme of the invention, the equipment and the system solve the problems in the prior art that an existing test environment simulation system cannot simulate the air inflow condition and meet the requirement on the injecting capacity, and is low in injecting efficiency and large in investment scale. The injecting equipment comprises a plurality of steam injecting units arranged on the gas collecting pipe of the simulation system. Each steam injecting unit comprises a high-flow steam generator and a set of two-stage steam injection pumps, wherein the set of two-stage steam injection pumps is formed through the serial connection of a first steam injection pump and a second steam injection pump. The output end of the high-flow steam generator is respectively connected with the first steam injection pump and the second steam injection pump. The first steam injection pump is connected with the gas collecting pipe through a steam injection pipe. A first steam injection and isolation valve is arranged between the first steam injection pump and the gas collecting pipe. A second steam injection and isolation valve is arranged between the first steam injection pump and the second steam injection pump.

The invention relates to an urban shock-resisting waterlogging-preventing rainfall flood management system, which comprises a plurality of blocks of concave green fields, a plurality of rainwater utilizing facilities, a plurality of concave rainwater parks, a plurality of concave playgrounds and an intelligent control system, and the urban shock-resisting waterlogging-preventing rainfall flood management system is characterized in that the concave green fields, the rainwater utilizing facilities, the concave rainwater parks and the concave playgrounds are communicated with one another though a water drain pipe network, the water drain pipe network is provided with a water drain pipe network liquid level meter, each concave rainwater park is internally provided with a park inner liquid level meter, each concave playground is provided with a playground inner liquid level meter, a water inlet of each concave rainwater park is provided with a park water inlet liquid level meter, a water inlet of each concave playground is provided with a play ground water inlet liquid level meter, the input end of the intelligent control system is connected with the output ends of the liquid level meters, and the output end of the intelligent control system is connected with control input ends of a water inlet / water discharging systems of the concave rain water parks and the concave playgrounds, thus an intelligent urban shock-resisting waterlogging-preventing rainfall flood management system is formed. The urban shock-resisting waterlogging-preventing rainfall flood management system has the beneficial effects that the shock can be resisted, the water logging is prevented, and the rain water is regulated, stored and discharged.

The invention relates to the field of mine water treatment, in particular to a high-mineralization degree mine water treatment method and a high-mineralization degree mine water treatment system. Thehigh-mineralization degree mine water treatment method comprises a mine water membrane concentration process and an evaporation crystallization and salt separation process, wherein in the mine water membrane concentration process, after two-stage concentration, disc tube reverse osmosis is then carried out, so that the salt content of concentrated water reaches 5-8%, and the construction scale, the investment cost and the running cost for the subsequent evaporation crystallization of concentrated salt water are reduced; and in the evaporation crystallization and salt separation process, a cocurrent three-effect evaporation and freezing crystallization process is adopted. The operating flexibility is high; and not only can final production of industrial sodium sulfate and sodium chloride with relatively high quality and a small amount of impurity salt be guaranteed, but also the high-mineralization degree mine water treatment method and the high-mineralization degree mine water treatment system can be applied to treatment of water quality with a wider change range.

The invention relates to an intelligent control type anti-impact urban sunken playground which comprises a sunken playground. The playground is characterized in that the sunken playground is in linkage with a rainwater storage adjustment and slow drainage structure to form the anti-impact urban sunken playground, wherein the rainwater storage adjustment and slow drainage structure mainly comprises a rainwater switch well, a water inlet / outlet control valve, a switch well liquid level meter and a PLC (Programmable Logic Controller); the rainwater switch well is communicated with a municipal drainage system; the sunken playground is communicated with the rainwater switch well through the water inlet / outlet control valve; the switch well liquid level meter is mounted in the rainwater switch well and is used for measuring the water level of the rainwater switch well; a signal output end of the switch well liquid level meter is connected with a signal input end of the PLC; a control signal output end of the PLC is connected with a control input end of the water inlet / outlet control valve; and the PLC controls the on or off of the water inlet / outlet control valve according to a water level signal value from the switch well liquid level meter so as to form an intelligent control structure. The intelligent control type anti-impact urban sunken playground provided by the invention forms a rainwater utilization system skillfully combining intelligent control type urban sports, leisure and entertainment with urban drainage and disaster reduction.

The invention belongs to the field of nonferrous metallurgy, and particularly relates to a device and technology for smelting and processing secondary lead materials to generate lead bullion by adopting a bottom blowing furnace hearth. Bullion lead materials are matched with pulverized coal, then limestone, pebbles, iron ore and other solvents are added to the mixture according to slag types and pelletizing is carried out, the lead bullion and reducing slag are output through the processing of a bottom blowing smelting furnace, the lead bullion is sent to a refining system, the content of valuable metal in the reducing slag is low, and the reducing slag is deposited as waste slag. Meanwhile, waste heat recovery is carried out on the output high concentration SO2 smoke and dust collection is carried out on the output high concentration SO2 smoke through a dust collection system, then the high concentration SO2 is sent to a sulfuric acid preparing system or a sodium sulfite preparing system to produce sulfuric acid or sodium sulfite products, and smoke dust is returned to carry out dosing. According to the device and technology for smelting and processing the secondary lead materials to generate the lead bullion by adopting the bottom blowing furnace hearth, lead plaster of secondary lead can be processed economically and effectively, and the process device is strong in leakproofness, good in environmental protection effect, high in efficiency of heat utilization, convenient to operate, high in automation level, low in labor intensity, long in service life of the furnace and high in metal direct recover rate, and effectively solves the problems that energy consumption is high, efficiency of heat utilization is low, and environmental protection effects are poor in the smelting and recovering process of lead-bearing materials.

The invention discloses a double-layer bridge capable of reducing interlayer height difference. The double-layer bridge capable of reducing the interlayer height difference comprises a road surface paving protective layer, gate-type pier studs and an under layer bridge floor, the double-layer bridge capable of reducing the interlayer height difference further comprises a road beam and longitudinal beams, the road beam is laid on the longitudinal beams, the road surface paving protective layer is laid on the upper surface of the road beam, one end of each longitudinal beam is connected with the lower surface of the road beam, the other end of each longitudinal beam is connected with the corresponding gate-type pier stud, and the under layer bridge floor is arranged between the road beam and the gate-type pier studs. According to the double-layer bridge capable of reducing the interlayer height difference, the idle space without occupying a building line is skillfully utilized, therefore, the interlayer height difference of the double-layer bridge is reduced by a large margin, the double-layer bridge capable of reducing the interlayer height difference can be used for road-railway co-built double-layer bridges, similar double-layer structures can all adopt the structure style, and the actual efficacy of the double-layer bridge capable of reducing the interlayer height difference is reflected in the aspects of reducing the scale of construction and reducing the construction cost.

The invention relates to a method for building an underground room under an old building by using pipe sheds, which aims to provide a method which has the characteristics that the construction period is short, the construction size is small and the construction can avoid the underground pipelines. The invention adopts the technical scheme that the method includes the following steps: 1) determining the positions of at least two entrances and exits beside the building; 2) digging work shafts or access ramps at the positions; 3) striking a plurality of steel pipes into each work shaft or access ramp and pouring in cement slurry; 4) digging a horizontally extended construction channel between the steel pipes; 5) striking a plurality of steel pipes into the construction channel; 6) continuing to strike a plurality of steel pipes among the pipe sheds in the construction channel to form a steel pipe wall; 7) cutting earth within the range among the pipe sheds; 8) after the underground room is dig out, welding steel plates or channel steel at the outer side of the pipe shed wall for reinforcement; 9) integrating the pile foundations of the old building; and 10) transforming the work shafts to elevator shafts and transforming the access ramps to entrance / exit ramps.

The invention relates to a large gymnasium shock-resistance intelligent control-type rainwater utilization system. The large gymnasium shock-resistance intelligent control-type rainwater utilization system is characterized by being composed of a roof rainwater collection and utilization part and a ground rainwater collection and utilization part. The roof rainwater collection and utilization part comprises a roof rainwater strainer, a rainwater down pipe, a flow abandoned well, a water storage pool, a filter pressure pump, a filter device, a clean water pool, a water supply pump, a rainfall monitoring device and a programmable logic controller (PLC) controller. A water outlet of the water supply pump is communicated with a water taking point of the ground. A water storage liquid indicator is arranged inside the water storage pool. A clean water liquid indicator is arranged inside the clean water pool. The ground rainwater collection and utilization part comprises a plurality of low elevation greenbelts, a plurality of overflow permeating wells, a plurality of permeating drain pipes, a plurality of rainwater permeating wells and a plurality of rainwater wells. Bottoms of the rainwater wells are communicated with municipal administration rainwater pipes. An output end of the PLC controller is connected with the filter pressure pump, the water supply pump, a drain valve and a water discharging valve, and an intelligent type automatic control structure is formed. The large gymnasium shock-resistance intelligent control-type rainwater utilization system has the advantages of being capable of developing new water resources and cultivating underground water and saving water resources and the like through a drainage system combined of the roof rainwater utilization and the ground rainwater permeating discharge.

The invention discloses hanging-pulling type power supply equipment for an electric automobile, the electric automobile using the same and a method for supplying power to the electric automobile. In the traditional electric automobile, a battery is placed on a chassis, the automobile needs to carry the heavy battery to run due to kinetic energy consumption, and the battery to be carried has limited weight so that the problems of short full charge endurance and frequent charging are generated. The hanging-pulling type power supply equipment for the electric automobile comprises an automobile body and wheels below the automobile body, wherein a hanging and pulling device fixedly connected with the electric automobile is fixed on the automobile body on which a battery pack for supplying power to the electric automobile is loaded, the battery pack is connected with a power supply line of the electric automobile, and the hanging-pulling type power supply equipment is used for supplying power to the electric automobile. The hanging-pulling type power supply equipment effectively solves the problem of carrying the battery of the traditional electric automobile, greatly improves the full charge endurance of the automobile, has convenient and rapid replacement of a power supply, and avoids the long-time parking of the automobile to occupy the field resource of a charging station. The hanging-pulling type power supply equipment is beneficial to the large-scale generalization and use of the electric automobile and exerts an important function on reducing urban environmental pollution.

The invention discloses an intelligent traffic light controller based on video vehicle queue length detection and a control method thereof, and provides a traffic light controller and method which are low in cost and can adjust traffic light time intervals automatically in various types of road junctions according to vehicle queue waiting condition on the road surface. Besides, road waiting vehicle queue length detection is performed by virtue of existing road cameras and a video analysis technology, and the traffic light time intervals are adjusted dynamically according to detection results of multiple waiting lanes. During construction, all that is needed is to mount a small-size control box on each road junction, the mounting cost is reduced greatly, and the construction scale is reduced; the controller and the method have wider application; and the duration of the traffic lights can be automatically controlled according to the vehicle queue length of each waiting lane in real time, manual adjustment is not needed, the road passage efficiency can be improved effectively, the traffic jam condition of crossroads can be relieved, and the normal passage of vehicles and pedestrians is guaranteed.

The invention provides a method and a rainwater garden system for synchronous resourceful treatment of reclaimed water and belongs to the technical field of water resource utilization. Collection, treatment and recycling of rainwater and the reclaimed water are integrated into flower beds, lawns and landscape gardens of constructed wetlands, and non-point and point source pollution of cities is solved. An artificial filter bed system of the rainwater garden is subjected to cold-resistant enhancement treatment by cold-resistant vegetation, thermal insulation, potential level water distributionand aeration; pollutants in the rainwater and the reclaimed water are rapidly and efficiently degraded by iron-substrate biological particle carriers. The system is suitable for rapid resourceful treatment of the rainwater and the reclaimed water at different temperatures in different regions and different seasons. Quality of effluent of the system meets water quality requirements of surface watersources of greening and domestic drinking water, so that not only is water resource saved, but also the black-odor problem caused by long-term storage of the rainwater in the sponge city developmentprocess is solved, and production of a black and odorous water body can be effectively prevented. Industrialization can be realized, and the method and the system have good market prospect and promotional value.

The invention discloses an underground passage for unmanned automatic freight transportation. An automatic driving area is formed in the underground passage. A mode conversion area is arranged at theend of the underground passage and is used for separating an artificial driving area from the automatic driving area. The mode conversion area includes a pedestrian zone and lanes arranged at both sides of the pedestrian zone; isolation facilities are arranged between the pedestrian zone and the lanes at the two sides; and isolation facilities are also arranged between the pedestrian zone and theautomatic driving area. A staff passage is set between the pedestrian zone and the artificial driving area. A plurality of parking spaces are arranged at the lanes at two sides of the pedestrian zone;and shielding doors matching the parking spaces are arranged in the isolation facilities between the pedestrian zone and the lanes at the two sides. According to the invention, the dual-mode transportation system combining automatic driving with manual driving is put forward; switching between the automatic driving and manual driving is realized by setting the mode switching area; and the high-efficiency transportation of automatic driving is realized by using the underground dedicated passage.

The invention discloses a biogas desulfurization device, belonging to the technical field of biogas production. The biogas desulfurization device is formed by sequentially connecting a washing tank (2), a biological desulfurization tank (4) and a fine desulfurization tank (6) with one another, wherein a gas inlet pipeline (1) is arranged on the washing tank (2); a washing tank gas pipeline (3) is arranged on the top of the washing tank and is communicated with the bottom of the biological desulfurization tank (4); a biological desulfurization tank gas pipeline (5) is arranged on the top of the biological desulfurization tank (4) and is communicated with the bottom of the fine desulfurization tank (6); a gas outlet pipeline (7) is arranged on the top of the fine desulfurization tank (6); the washing tank (2) and the biological desulfurization tank (4) are provided with cycle spraying devices (9); multiple layers of spraying packing layers (8) are arranged in the washing tank (2); and a biological film adhesion packing layer (10) is arranged in the biological desulfurization tank (4). The biogas desulfurization device provided by the invention is high in operating reliability and low in operating cost, the usage amount of chemical desulfurizing agents is small, and the removal rate of hydrogen sulfide is high.

The invention discloses a nanometer composite filtering membrane for salt and water separation as well as a preparation method and application thereof. The nanometer composite filtering membrane comprises an aluminum oxide nanometer ceramic membrane as well as a graphene layer arranged on the surface of at least one side of the aluminum oxide nanometer ceramic membrane; and the pore diameter of the nanometer composite filtering membrane is less than 0.6 nm. The nanometer composite filtering membrane provided by the invention has good salt and water separation effect, large flux and high rejection rate, does not block the membrane pores, can effectively intercept salt molecules, and is pollution-resistant and easy to clean. Furthermore, the preparation method is simple in operation, convenient and practical.

The invention discloses double-layer full-orientation and direct-interconnection overpass, the overpass is made up of bridge approach, deciliter tilt hole, cross bridge and inner arc curved road, the deciliter tilt hole and curved road are double-layer structure with upper and subjacent layer, each bridge approach is a mutual double bridge which contain a long and a short bridge, which two are connected to the outer end of upper and subjacent layer of the hole, the two sides of each layer in deciliter tilt holes are connected through curved road bridge, the centre part of the each hole is connected to cross bridge, the cross bridge are straight bridges which are orthogonal, the cross bridge is bidirectional one-way bridge, the two ends of it are connected with the upper and subjacent layer of the hole. The overpass can realize full-orientation and direct-interconnection with small area and cost.

The invention provides a shifting stalk pellet bioreactor. Crops stalks are crushed and then pressed into pellets, a fermentation pond is built in a winter-warming greenhouse or a greenhouse, and an air blower and an exhaust apparatus are installed. The stalk pellets are mixed with a nitrogen-sourced substance according to a certain ratio to be stacked. By virtue of the operations such as fermentation strain addition, watering, film lamination, air blowing, exhaustion and the like, the stalks are aerobically fermented and converted into carbon dioxide, heat, organic matters and the like so asto be used for the growth and development of crops such as vegetables planted in greenhouses and fruit trees and other soilless cultivated green plants.

The invention provides an internal compression air separation technological process with energy storage and efficient recovery of material energy resources, and belongs to the technical field of air separation. According to the process, a low-temperature liquid-air storage and substance energy recovery system is arranged on the basis of a conventional air separation internal compression technological process, so that a novel air separation technological process integrating gas separation, liquid-air storage and substance energy resource recovery is formed, and the large-scale energy storage characteristic of air separation equipment and technology is realized. The technological process is a novel air separation technological process, and is also suitable for upgrading and updating transformation of an existing air separation internal compression technological process. According to the technological process, surplus electric energy can be stored in liquid air through cheap valley electricity resources, the demand of the system for electric energy in the peak electricity period is reduced by recycling stored substances and cold energy released in the gasification process in the energy release process, and the energy conversion efficiency and the operation economical efficiency of the air separation system are effectively improved.

The invention provides a double-transfer-box connected closed cell tissue and virus modulation system. The system comprises a cell preparation room, a cell modulation room and a cell delivery room, wherein a transfer box is connected to each of two sides of a cell tissue workstation body in the cell modulation room, the transfer box on one side communicates with the cell preparation room and the transfer box on the other side communicates with the cell delivery room; the cell modulation room communicates with the cell delivery room by a door, cleanliness of the two rooms is identical, and cleanliness of the cell preparation room is higher than that of the two rooms. The transfer boxes arranged on two sides of the cell tissue workstation body communicate with the cell preparation room and the cell delivery room respectively to form the closed cell modulation system, so that the general environment (Grade D) of the cell tissue operation region is achieved, the construction scale and costof a laboratory are greatly reduced, and operation of personnel is time-saving and effort-saving.

The invention relates to a process for removing geosmin in raw water of drinking water. The process comprises the following steps: introducing raw water into a raw water tank; carrying out aeration inthe raw water tank by using a blower, and adding ozone into the raw water tank for strong oxidation at the same time; mixing the water out of the raw water tank with a coagulant for a coagulation reaction; carrying out filtration after full coagulation; introducing filtered drinking water into a clean water tank; transporting the treated drinking water to each water use site by using a frequencyconversion water supply device; and arranging disinfection device between the water out of the clean water tank and the frequency conversion water supply device for disinfection treatment. Compared with the prior art, the treatment process provided by the invention has the advantages of high pollutant removal efficiency, high utilization rate of ozone and activated carbon, less dosage, less investment of water treatment equipment, no secondary pollution and the like.

The invention relates to a high-pressure operation method of a sintering process, which is characterized in that each trolley on a sintering machine is continuously operated on a chain wheel drive device of a head wheel of the sintering machine, after a sintering material bed is ignited, multi-point continuous high-pressure blast is carried out, the multi-point continuous high-pressure blast is located on an igniter, the sintering machine adopts multiple air outlet pipes of an air bag, the air outlet pipes and an operation direction of the sintering machine are linearly uniformly distributed in a balanced manner, a positive pressures state is formed in the range, and the multi-point continuous high-pressure blast is realized; along the operation direction of the trolley, the multi-point continuous high-pressure blast is at a distance of 500 mm from the edge of an insulation cover, is at a horizontal distance of 700 mm from a breast board of the trolley, and is at a distance from any position at the left side and the right side of a central line, and the outlet of a multi-point high-pressure blast pipe is at a distance of 200-300 mm from a material surface at a height of the material surface of the breast board of the trolley. According to the high-pressure operation method of the sintering process provided by the invention, the problem of difficulty in popularization and application of the high-pressure operation can be overcome, the high-pressure operation method is very easy to implement in the sintering process, the scale of construction of a newly built sintering factory is reduced, and a large amount of raw materials and device operation cost are saved.

The invention discloses a double-layer bridge structure capable of lowering the integral height. The double-layer bridge structure comprises a public pier column, an upper layer railway beam part and a lower layer railway beam part, wherein the public pier column consists of a lower entity pier and an upper double-column pier; an upper layer railway longitudinal beam of the upper layer railway beam is erected on the upper double-column pier of the public pier column through outwards ararnging support bodies at two sides of the same horizontal surface; the support bodies are of transversely widened prestressed concrete structures with tensioned transverse prestressed bars. The double-layer bridge structure provided by the invention has the advantages that the control factor of clear height limitation can be avoided; the plane control condition can also be met; meanwhile, the stress requirements of the structure under the upper and lower layer railway load effect can be met; the construction technology is convenient and mature; the building height of the structure is obviously reduced; the bridge length is reduced; the building scale is reduced; the obvious economic benefits are realized; the railway small-angle grade separation engineering requirements under the limitation conditions of various factors such as plane and vertical surface spaces can be met.

The invention discloses cold-storage anti-freezing dry-wet combined air cooling integrated equipment. The equipment comprises a dry-wet combined air cooler, a water replenishing unit, an ice storage unit and a main circulating pump, wherein the dry-wet combined air cooler, the main circulating pump and a heat source user are connected through a pipeline to form a closed circulating system, an exhaust pressure stabilizing tank is arranged at the highest point of the pipeline of the circulating system, the water replenishing unit comprises a deoxygenated water tank, a water replenishing valve and a water replenishing pump, a water inlet pipe of the water replenishing pump is connected with a water outlet of the deoxygenated water tank, a water outlet pipe is connected with the pipeline of the circulating system, a water inlet pipe of the ice storage unit is connected with the pipeline of the circulating system through a water inlet valve, and a water outlet pipe is connected with a waterinlet pipe of the water replenishing pump through a water outlet valve. The invention also provides a system operation method. According to the cold-storage anti-freezing dry-wet combined air coolingintegrated equipment, the dry-wet combined air cooler and the ice storage unit are ingeniously combined together, peak shifting cold storage is achieved through the ice storage unit, rapid peak clipping is achieved, low-cost freezing prevention is achieved, the operation cost can be reduced, the construction scale of a dry-wet combined air cooler can be reduced, and therefore the equipment investment is reduced.