236 results about "Insufficient Cooling" patented technology

The invention relates to the technical field of injection molding, and discloses a uniform temperature control injection mold which comprises a mold closing body, a plurality of cooling circulation modules are installed on the surface of the mold closing body, a macroscopic adjusting assembly is arranged in the mold closing body, and the macroscopic adjusting assembly comprises a plurality of heat conduction pipes fixedly connected to the interior of the mold closing body. Temperature difference spiral sheets are mounted in the heat conduction pipes, when the temperature in the middle of the cavity changes, hot air rises, the temperature difference spiral sheets are evenly heated and expand, then the abutting plate is pushed to move, a valve element of the flow valve is driven to rotate through a trigger arm and a swing piece, and the flow of cooling liquid is adjusted in real time; therefore, the macroscopic adjusting assembly can be accurately matched with thermal load differences of injection molding filling, pressure maintaining and cooling stages, the problem of local overheating or insufficient cooling caused by fixed waterway flow of a traditional mold is effectively solved, and the quality stability and performance reliability of automobile parts are improved by dynamically adjusting the flow of cooling liquid.

The invention relates to the technical field of hot galvanizing, and discloses an automobile hot galvanizing process parameter optimization method and system based on artificial intelligence, and the method comprises the steps: carrying out window division processing on initial cooling parameters, constructing a cooling rate matrix, and finely depicting heat exchange states of different cooling sections; the problem of insufficient cooling control precision under different cooling speed alternating conditions is solved, a microscopic image is combined to extract the grain main axis direction, calculate the mean value and range of included angles, generate a consistency index set and quantitatively describe the dispersion problem in the grain growth direction, the cooling speed and the consistency index are jointly matched, and a cooling speed structure offset matrix is constructed. The method comprises the following steps: identifying a space mutation region, accurately positioning abnormal coarse or abnormal arrangement positions of crystal grains, and finally screening target cooling parameters according to a cooling index value corresponding to an abnormal region to realize local adjustment of a cooling process, thereby reducing the abnormal growth rate of the crystal grains and improving the direction consistency of the crystal grains.

The invention relates to a combustion chamber flame tube and a cooling hole distribution optimization method thereof. The combustion chamber flame tube comprises the first tube wall and the second tube wall, the cooling hole with the large first included angle is formed in the high-heat-load area, so that the large included angle is formed between the flowing direction of cooling air introduced by the cooling hole and the main flow direction, the cooling air is not prone to converging into the main flow, and the cooling air can be better attached to the wall face of the high-heat-load area; and a cooling air film with a large contact area with the inner wall of the barrel is formed, and the risk of local high-temperature ablation caused by insufficient cooling of a high-heat load area is reduced. The cooling holes with the small first included angle are adopted in the low-heat-load area, so that the included angle between the flowing direction of cooling air introduced by the cooling holes and the main flow direction is small, the cooling air is better converged with the main flow, the low-heat-load area is prevented from being overcooled, the temperature distribution of the inner wall of the flame tube is uniform, and the service life of the flame tube is prolonged. The problems of thermal fatigue and the like caused by overlarge temperature gradient are solved, and the risk of failure of the flame tube is reduced.

The invention discloses an excavator heat dissipation control method and system based on environment temperature and operation working conditions. The excavator heat dissipation control method comprises the steps that S1, the operation working conditions of an excavator are divided into five working conditions including the super-heavy load working condition, the heavy load working condition, the medium load working condition, the light load working condition and the super-light load working condition; s2, the external environment temperature is divided into 10 gears; s3, according to the environment temperature and the operation working condition, the heat dissipation requirement is divided into 10 gears; s4, the rotating speed of the cooling fan is adjusted according to the cooling requirement gear, so that the cooling requirement is accurately matched with the rotating speed of the cooling fan; and S5, whether the temperature of the working medium in the excavator is larger than a high-temperature threshold value or not is judged, if yes, heat dissipation is conducted according to the corresponding heat dissipation fan rotating speed obtained through the heat balance test, and if not, heat dissipation is conducted according to the actual heat dissipation requirement gear standard. The problem of heat dissipation redundancy caused by single parameter control is solved, and dynamic matching of the rotating speed of the fan and the composite heat dissipation requirement is achieved. And the energy consumption under the low-load working condition and the cold environment is reduced, and the risk of insufficient heat dissipation under the high-temperature heavy-load working condition is avoided.

The invention discloses a rolled piece temperature control system based on a steel rolling process, which relates to the technical field of steel rolling and comprises a detection module, a control module, an execution module and a cooling module, the detection module comprises infrared thermometer arrays, an ultrasonic thickness gauge, an electromagnetic flowmeter, a pressure transmitter and a thermal resistance thermometer, and the infrared thermometer arrays are used for being arranged in front of and behind a cooling section and respectively collecting initial temperatures before entering a cooling system. Through the self-adaptive PID algorithm, the finite difference heat conduction model and the Smith pre-estimation compensation strategy are combined, the problem of control delay caused by the large lag characteristic in the cooling process is solved, control parameters can be dynamically adjusted according to the rolling speed, the steel grade characteristic and the like, temperature adjustment better fits the actual working condition, and the control precision is improved. The phenomenon of supercooling or insufficient cooling in a traditional control mode is fundamentally avoided, and the uniformity and stability of the performance of rolled pieces are guaranteed.

The invention relates to the technical field of automobile radiators. The heat dissipation control method of the automobile radiator, the radiator, the heat dissipation pipe, the storage medium and the electronic equipment are provided. According to the scheme, the heat dissipation efficiency of the automobile radiator can be remarkably improved. On one hand, different from the mode that a traditional radiator only depends on external gas for heat exchange, a dual heat exchange system of the second cooling liquid, the external gas and the first cooling liquid is constructed by means of the characteristic that the first cooling liquid does not directly participate in circulation and keeps low temperature. The second cooling liquid not only can dissipate heat through conventional gas-liquid heat exchange in circulation, but also can conduct heat through the low-temperature cooling liquid in the first flow channel adjacent to the second cooling liquid in an attached mode, the heat dissipation effect is further enhanced, and therefore the cooling efficiency of the engine cooling liquid is improved in an all-around mode, and reliable guarantee is provided for stable operation of an engine. And on the other hand, the temperature of the engine and the temperature of the first cooling liquid are obtained in real time, and the flow and the flow speed of the second cooling liquid are adjusted according to needs, so that the engine can keep proper working temperature under different working conditions, and performance loss caused by insufficient heat dissipation is effectively avoided.

The invention discloses a current rotating speed mapping control method of a liquid cooling system, and relates to the technical field of liquid cooling systems, and the control method comprises the steps: constructing a double-domain model of a motor domain and a thermal load domain, carrying out the online identification of a liquid path impedance parameter in an operation process, and obtaining a current rotating speed mapping model; a target rotating speed instruction is generated in combination with a current-rotating speed mapping reference result and a thermal load flow estimation result, self-adaptive pump speed control is achieved through weight adjustment and smooth constraint driven by residual errors, and meanwhile baseline mapping and a pump family curve are dynamically updated through a memory buffering and batch reestimation mechanism; according to the invention, the self-adaptive capability and the cooling control stability of the liquid cooling system under complex working conditions are obviously improved, and the contradiction between insufficient cooling and energy consumption increase is effectively avoided.

The utility model discloses a midsole secondary foaming forming machine cooling device which comprises a base, the top of the base is fixedly connected with a fixing block, one side of the fixing block is provided with a round through groove, a placing assembly used for placing a mold is arranged in the round through groove, the top of the base is fixedly connected with a bearing seat, and the bearing seat is provided with a bearing block. A cylinder is rotationally connected into the bearing seat through a bearing, a cavity is formed in the cylinder, a spiral pipe is fixedly connected into the cavity, and a connecting frame is fixedly connected to the inner wall of the cylinder. According to the utility model, the surface of the mold can be uniformly cooled through rotating centrifugal force, the problems of local supercooling and insufficient cooling of the mold are reduced, the deviation of medium and low density is reduced, the rotating speed required by different foaming materials can be matched, the rotating speed adjusting time is shortened, and the convenience of the device is improved; and the placing frame can be pushed to the middle of the cylinder, so that the production efficiency of the device is improved.

The present invention discloses a rotating cooling roller, a vacuum quenching device and a method for preparing an amorphous strip, which belongs to the field of rapid solidification technology and solves the problem of insufficient cooling strength of the existing cooling roller. The rotating cooling roller includes a rotating shaft, a flange, a cooling jacket, a core barrel and a rolling bearing; the cooling jacket is a cylinder without end faces and hollow inside, and the two ends of the cooling jacket are respectively connected to a flange, and the other ends of the two flanges are respectively connected to the rotating shaft; the rotating shaft is hollow inside for the cooling medium to flow through; the two flanges and the cooling jacket form a spindle-shaped internal space, and the core barrel is arranged in the spindle-shaped internal space, and a gap is left between the flange and the cooling jacket respectively, so that the cooling medium from the rotating shaft can flow through; the shape of the core barrel corresponds to the spindle-shaped internal space, and its two ends are respectively connected to the rotating shaft, and rolling bearings are arranged at the connection.

The present invention discloses a tableting device for powder coating production, and relates to a tableting device comprising an equipment frame, a panel fixedly connected to the equipment frame, a driving roller and a driven roller rotatably connected to the panel, the driving roller and the driven roller being connected via a gear transmission, the driving roller and the driving motor being connected via a gear transmission, the driving roller and the driven roller both comprising a rotating extrusion roller body, the outer edges of the extrusion roller bodies being provided with cooling channels for supplying cool air, and a cooling fan being further provided on the equipment frame for supplying air to the cooling channels. By providing cooling channels on the driving roller and the driven roller, the cooling airflow provided by the cooling fan can be injected into the cooling channels in real time. Based on the structural arrangement of the air distribution mechanism, the cooling airflow can be directly injected into the extrusion surface between the driving roller and the driven roller, thereby avoiding insufficient cooling and providing a guarantee for the continuous tableting of the powder coating.

The oil return structure and equipment are used for oil return of a motor and / or a gearbox, the motor and the gearbox are each provided with a machine shell and a rotating shaft, an inner oil cavity is formed in each machine shell, each inner oil cavity is provided with a first oil liquid level face, and an oil seal body used for sealing an opening of each inner oil cavity is arranged on each rotating shaft. The oil return structure comprises a negative pressure section and an oil throwing section which are arranged on the rotating shaft, an oil throwing structure which is arranged on the machine shell and corresponds to the oil throwing section, and a negative pressure structure which is arranged on the machine shell and corresponds to the negative pressure section. The scheme can effectively solve the problems of insufficient cooling caused by oil seal abrasion and oil leakage of the oil-cooled motor and damage to an insulation system caused by oil entering the motor due to oil leakage when the motor is matched with a gearbox, and improves the service life and stability of the motor.

The invention discloses a combustion chamber regenerative cooling type turbofan engine system based on methanol fuel, relates to the technical field of aero-engines, and solves the problems that a traditional aero-engine is insufficient in cooling capacity and large in pollution. An air inlet channel, a fan, an air compressor system, a combustion chamber, a turbine system and an exhaust nozzle are sequentially communicated, and the outlet end of the exhaust nozzle is communicated with the atmosphere; the fan, the gas compressor system and the turbine system are connected through a shaft; a regeneration cooling channel is arranged in the combustion chamber, the methanol fuel tank is communicated with the regeneration cooling channel, methanol absorbs heat and evaporates in the regeneration cooling channel and is cracked to form mixed gas at the same time, and the mixed gas and air are combusted after being mixed. The regenerative cooling technology is applied to the turbofan engine, methanol serves as fuel and coolant, heat of a combustion chamber is absorbed to be evaporated and vaporized, meanwhile, the methanol is cracked to form mixed gas for combustion, dependence of a traditional engine on cooling air is reduced, the heat efficiency of the engine is improved, and meanwhile the combustion performance of methanol fuel is enhanced.

The invention discloses a counter-flow type evaporative condenser, and belongs to the field of counter-flow type evaporative condensers, the counter-flow type evaporative condenser comprises a shell and a centralized controller located outside the shell, the interior of the shell is divided into a cooling space and a rotating space communicated with the cooling space, a fan, a water distribution device and a cooling coil are sequentially installed in the cooling space from top to bottom, air inlets are formed in the two side faces of the shell, a water tank is reserved in the lower portion of the shell, the water tank and the water distribution device are communicated outside the shell, a state monitoring sensor is installed on the lower middle portion of the cooling coil, and the lower end of the water distribution device is connected with a dynamic spraying adjusting mechanism. The state monitoring sensor comprises at least one movable spray head capable of moving in the axial direction of the cooling coil and an infrared distance measuring sensor used for measuring the axial position of the movable spray head, and the state monitoring sensor is electrically connected with the centralized controller; and the dynamic spraying adjusting mechanism is in signal connection with the centralized controller. The position of the spray head can be adjusted according to actual conditions, so that the phenomenon of insufficient cooling, namely discharging, in the cooling coil of the condenser is avoided.

This invention discloses a prefabricated atmospheric pressure refrigeration system, relating to the field of refrigeration system technology. It includes: a power grid information interaction module, used to acquire real-time data on off-peak electricity hours, the maximum allowable load during those hours, and power grid load fluctuations; preprocessing the acquired data to obtain standardized power grid data; and a cooling demand prediction module, used to calculate the hourly cooling demand assessment value for the next day based on the system's historical hourly total cooling capacity data, real-time environmental parameters, and the operating plans of major terminal equipment, using a preset prediction model, and outputting the system's total cooling demand curve and peak cooling capacity. This invention, by calculating the next day's cooling demand assessment value and combining it with historical hourly cooling capacity, real-time temperature and humidity, and equipment operating plans, can accurately predict the cooling demand for each time period of the next day, ensuring that cooling capacity preparation matches the actual cooling scenario, avoiding insufficient cooling supply that could affect production or office cooling, and also avoiding excessive cooling capacity storage that could lead to energy waste.

To provide an on-vehicle temperature control system capable of suppressing insufficient cooling capability.SOLUTION: An on-vehicle temperature control system includes a low-temperature water cooling circuit and a high-temperature water cooling circuit capable of exchanging heat via a refrigerant circuit, and a low-temperature side heat exchanger provided on the low-temperature water cooling circuit and a high-temperature side heat exchanger provided on the high-temperature water cooling circuit have a common heat radiation part. Therein, exhaust heat suppression control which suppresses exhaust heat from the high-temperature heat exchanger is executed under such a prescribed condition as to give priority to cooling on a predetermined low-temperature water cooling circuit based on the state of the unit cooled by exhaust heat from the low-temperature heat exchanger.SELECTED DRAWING: Figure 3

The invention provides a pipe chain cold material conveyor, and relates to the technical field of material conveying. A pipe chain cold material conveyor comprises a conveying pipeline, a driving mechanism and a cleaning mechanism. The driving mechanism is arranged in the conveying pipeline, the driving mechanism comprises a driver, a driving disc, a connecting rope and a connecting plate, the driving disc is connected with the driver, the driver is used for driving the driving disc to rotate, the connecting rope is arranged in the direction of the conveying pipeline, and the connecting rope is partially wound on the driving disc; the connecting plate is rotationally connected with the connecting rope, a connecting groove is formed in the driving disc, and the connecting groove is used for limiting the connecting plate; and the cleaning mechanism comprises a driving assembly, a cleaning disc and a cleaning assembly, and the cleaning assembly rotates through the driving assembly to clean the connecting plate. The slag conveying device has the effect that the situation that slag is attached to the connecting plate in the conveying process due to uneven particle size distribution of the slag and insufficient cooling of part of the slag is improved.

A water block pressure regulation structure includes a top cover internally defining a water-out compartment, a pressure reduction chamber and a water-in compartment; a heat absorbing member; and a partitioning plate superposed on the heat absorbing member to define a heat exchange chamber between them, and including a buffer space communicable with the heat exchange chamber via first and second bores formed on the partitioning plate. The first and second bores are openable and closeable by first and second valves fitted therein, respectively. The water-in and water-out compartments communicate with the heat exchange chamber via first and second penetrating openings on the partitioning plate. When the heat exchange chamber internally has high pressure or insufficient cooling liquid, the first and second valves automatically open to communicate the buffer space with the heat exchange chamber, and accordingly regulate the pressure and cooling liquid in the heat exchange chamber.

The utility model relates to the technical field of rolling mill guides and guards, and discloses a rolling mill guide and guard assembly capable of achieving temperature-controllable cooling. The rolling mill guide and guard assembly with the controllable temperature cooling function comprises a guide and guard assembly, a filtering and cooling assembly is installed at the upper end of the guide and guard assembly, a collecting tank is installed at the upper end of the filtering and cooling assembly, a filtering net is installed in the collecting tank, a cooling box is installed at the lower end of the collecting tank, and a protection plate is installed in the cooling box. A circulating pipe is installed on the left side of the cooling box, a connecting pipe is installed at the upper end of the circulating pipe, a pressure stabilizing assembly is connected to the left side of the filtering and cooling assembly, a water outlet pipe is installed at the upper end of the pressure stabilizing assembly, and a pressure stabilizing pump is installed at the upper end of the water outlet pipe. Large-particle impurities contained in water or oxide scale falling off from the surface of a rolled piece may block an injection orifice, so that cooling is insufficient, and the service life of a guide and guard device is affected.

This ensures that insufficient cooling of the multiple storage containers located above the main storage unit is prevented. [Solution] The horizontal refrigerator 10R comprises a plurality of storage containers 80R provided above the storage body 11R so as to cover the top opening 11R2, a circulation fan 35 for circulating air in the storage chamber 13R, a cold air duct 40 provided in the storage body 11R between the storage chamber 13R and the top opening 11R2, defining a flow path 45 through which cold air blown out by the circulation fan 35 flows in and heads toward the plurality of storage containers 80R, and a plurality of auxiliary fans 60, each provided between the cold air duct 40 and the plurality of storage containers 80R, which change the direction of the airflow so that a portion of the cold air flowing into the cold air duct 40 heads toward the plurality of storage containers 80R, and the plurality of auxiliary fans 60 are provided at intervals along the extending direction of the flow path 45.

The utility model discloses a combined type cavity coupler, and specifically relates to the cavity coupler field, the combined type cavity coupler comprises an upper shell, a lower shell, a wiring terminal, a main guide rod and a coupling rod, the upper shell is movably connected with the lower shell, the internal space of the upper shell and the internal space of the lower shell are combined to form an inner cavity, the main guide rod and the coupling rod are located in the inner cavity, and the wiring terminal is connected with the coupling rod. The wiring ends are installed on the outer wall of the lower shell, the wiring ends are connected through the main guide rod and the coupling rod, a plurality of metal fins are installed at the bottom of the inner cavity, a metal pipeline penetrates through the metal fins, and the interior of the metal pipeline is hollow to form a first channel. Through the heat conduction design of the modularized shell, the metal fins, the metal pipeline and a plurality of channels and in combination with active air flow circulation of the cooling fan, the temperature of the inner cavity is remarkably reduced, signal attenuation or element damage caused by overheating is avoided, the heat dissipation system is efficiently compounded, the internal structure is stabilized, and the service life is prolonged. The problems that a traditional integrated coupler is difficult to maintain and insufficient in heat dissipation are solved.

The invention discloses a motor main shaft for a high-power motor, which comprises a hollow rotating shaft, a first fixed pipe, a second fixed pipe and a third fixed pipe, and the third fixed pipe is connected with a plurality of spray pipes. According to the motor spindle, heat of the rotating shaft is taken away through flowing of the cooling liquid, when heat dissipation is insufficient, atomized liquid can be sprayed out through the spray pipe and rapidly vaporized through airflow to take away heat, vaporization directly occurs near the rotating shaft, and therefore the cooling effect is better. According to the requirement for the heat dissipation effect, the position of the piston unit can be adjusted, so that the using number of the spray pipes is adjusted, and the evaporation cooling capacity is adjusted.

The utility model discloses a cooling tower for air separation equipment, and belongs to the field of cooling of air separation equipment. A cooling tower for an air separation plant comprises a shell, a gas conveying pipe is arranged at the top of the shell, a gas outlet pipe is arranged on one side of the shell, and a guide assembly is arranged on the inner side of the shell. By arranging the guide assembly, a first cooling layer and a second cooling layer, gas cooling duration control is effectively improved; the first temperature sensor is installed to monitor the gas outlet temperature in real time, and the control system is matched to adjust the rotating speed of the fan to enhance or weaken the gas flowability, so that the contact area and contact time of the gas and the heat exchanger are increased or shortened, the heat exchange efficiency is improved, and efficient cooling is achieved; the cooling process is monitored in real time and accurately controlled, the stability of the cooling effect is ensured, energy waste is avoided, meanwhile, it is ensured that gas is evenly distributed in the cooling tower, and the problem of local overheating or insufficient cooling is solved.

The utility model belongs to the technical field of feed granulating and cooling, particularly relates to a feed granulating and cooling device, and aims to solve the problems that the cooling effect becomes poor due to the fact that existing feed granules stay in a box for a short time and the feed granules are not screened during discharging. Through holes are formed in the top and the bottom of the feed cooling box and used for feeding and discharging, and an air inlet and an air outlet are formed in the two sides of the feed cooling box. According to the pellet feed cooling device, through the arrangement of the conveying assemblies which are arranged in a staggered mode, the time of pellet feed in the feed cooling box is prolonged, the time of cold air blowing is longer, and the cooling effect is improved; according to the feed cooling device, automatic discharging of cooled feed is achieved through the vibration assembly, meanwhile, fine and unqualified feed particles are screened, and through the air cooler and the cyclone dust removal device arranged at the air inlet and the air outlet of the feed cooling box, not only is the cooling effect improved, but also dust in blown hot air can be effectively reduced.

A safety protection system of a lifeboat diesel engine set comprises a signal alarm unit, a starting protection unit and an operation protection unit. When the diesel engine set is in a standby state or in a starting state, signals such as low water level, or / and low oil level, or / and high water temperature, or / and starting overtime and the like occur, the signal alarm unit gives an alarm, the starting protection unit disconnects a diesel engine starting circuit, and the diesel engine set cannot be started; when the diesel engine set is in standby and starting, oil pressure is low, and the diesel engine set can be normally started; when the diesel engine set runs, signals such as low water level, or / and low oil level, or / and high water temperature, or / and low oil pressure occur, the signal alarm unit gives an alarm, and the running protection unit stops the diesel engine in a delayed manner; therefore, the problem that the diesel engine and the gear box are overheated and fail due to insufficient cooling and lubricating protection of the diesel engine and no lubricating protection on the gear box is solved; false alarming is carried out before the diesel engine is standby and started successfully due to low oil pressure; and safe operation of the lifeboat diesel engine set is met.

The utility model discloses a filler arrangement structure capable of reducing airflow resistance in a cooling tower, which comprises a cooling tower, a filler cooling mechanism is arranged in the cooling tower, a water tank is arranged on one side of the cooling tower, a spray pump is arranged on the water tank, a water return mechanism is arranged at the bottom of the inner side of the cooling tower, and the water return mechanism is connected with the cooling tower. The filler cooling mechanism comprises an inner-area filler, an outer-area filler and a fixing frame, a height difference exists between the inner-area filler and the outer-area filler, and the inner-area filler and the outer-area filler are both S-wave fillers. According to the filler arrangement structure capable of reducing the airflow resistance in the inner area of the cooling tower, the airflow resistance can be reduced by reducing the height of the filler in the inner area, air distribution is homogenized, the heat dissipation capacity of the outer area can be improved by increasing the height of the filler in the outer area, and when heat dissipation is insufficient, the driving motor rotates the auxiliary fan out of the protective cover to conduct auxiliary heat dissipation on the filler; and air flow is promoted, and the heat dissipation effect is effectively improved.

The invention discloses a laser cutting mechanical arm capable of cooling, and belongs to the technical field of mechanical arms, the laser cutting mechanical arm comprises a mechanical arm body, a vibration detection unit, a control unit and a cooling liquid conveying unit; the vibration detection unit is arranged on the mechanical arm body and comprises a piezoelectric type electric control vibration sensor, and the piezoelectric type electric control vibration sensor is electrically connected with the control unit; and the control unit is used for receiving an output value of the vibration detection unit and regulating and controlling the amount of the cooling liquid output by the cooling liquid conveying unit, so that the amount of the cooling liquid required by the mechanical arm during laser cutting operation is dynamically regulated, dynamic self-adaptive regulation and control of the output amount of the cooling liquid are realized, and the cooling intensity is regulated in real time according to vibration changes in the cutting process. The problem that a traditional fixed cooling mode is not matched with the actual cooling requirement is effectively solved, and core components are prevented from being damaged due to overheating caused by insufficient cooling.

The invention relates to the technical field of underground engineering construction environment guarantee, and discloses a subway underground excavation station environment control system and method based on stratum cold energy utilization, and the system comprises a cold source acquisition and air supply system, an air exhaust and purification system, an auxiliary cooling system, an environment sensing system and an intelligent control system. The cold source acquisition and air supply system is used for acquiring low-temperature air from the penetrated interval tunnel and conveying the low-temperature air to a construction area of the subway underground excavation station; the exhaust and purification system is used for sucking air in a station construction area, purifying the air and then discharging the air; the auxiliary cooling system is used for conducting secondary cooling on low-temperature air when cold supply is insufficient. The environment sensing system is used for collecting environment data of a construction area and transmitting the environment data to the intelligent control system. The intelligent control system is connected with all the systems and generates a control instruction after receiving environment data so as to regulate and control the cold source to obtain the air supply amount of the air supply system, the exhaust air amount of the exhaust and purification system and start and stop of the auxiliary cooling system.

The invention discloses a variable frequency motor, which belongs to the technical field of motors, and comprises a casing and a rear casing, a stator is arranged in the casing, a temperature sensor is arranged on one side of the stator, an air cooling mechanism and a water cooling mechanism are arranged in the rear casing, and the air cooling mechanism comprises a fixing frame, a driving motor, a driving shaft and fan blades. A linkage mechanism and a transmission mechanism are arranged on the outer side of the driving shaft, and the water cooling mechanism comprises a cooling pipe and two compression boxes. The temperature of the stator is monitored in real time through the temperature sensor, and the controller intelligently adjusts the rotating speed of the driving motor to dynamically adjust the air cooling strength, so that the problem of overheating caused by insufficient heat dissipation under the low-speed and large-torque working condition is effectively solved; and meanwhile, an air cooling and water cooling synergistic heat dissipation mechanism is innovatively integrated, when the temperature or the rotating speed reaches a threshold value, a linkage mechanism is automatically coupled, and a transmission mechanism converts rotating motion into piston reciprocating motion to drive cooling liquid to circularly flow between a compression box and a cooling pipe penetrating through a stator to efficiently take away core heat.

The invention relates to the technical field of heat pump units, and discloses a circulating type steam heat pump unit and a control method thereof.The circulating type steam heat pump unit effectively solves the technical problem that a compressor of a traditional unit is insufficient in cooling by constructing a linkage structure of oil way circulation and water side heat exchange. Accurate cooling is directly carried out on the high-temperature operation working condition of the compressor, the damage risk caused by overheating of the compressor and accessories is greatly reduced, and the operation reliability of a unit is remarkably improved; meanwhile, heat generated in the oil way cooling process is efficiently recycled for steam water replenishing and preheating, heat waste caused by a traditional external cooling mode is avoided, the heating capacity and heating efficiency of the unit are improved, and overall energy consumption is reduced; the electric connection design of the control device and all the mechanisms lays a solid structure foundation for subsequent accurate regulation and control, it is guaranteed that parameters in all links of cooling, preheating and steam production are highly matched, it is guaranteed that all the mechanism units of the circulating steam heat pump unit operate cooperatively and orderly, and the stability of the unit during working is improved.

The invention discloses a power station cooling system utilizing surplus cooling capacity at night and an operation method of the power station cooling system. The power station cooling system comprises an original cooling device, a surface condenser, a layered reservoir, a condenser cooling loop and a night cold accumulation loop. The original cooling device is a cooling tower I comprising two sets of cooling assemblies, or is a direct air cooling and condensing system and a cooling tower II comprising a set of cooling assembly; cooling water on the upper layer of the layered reservoir is cooled by a set of cooling assembly through a night cold storage loop and then stored at the bottom of the layered reservoir, and environmental cold energy is stored by utilizing the surplus heat exchange capacity of a power plant at night; surface type condenser outlet cooling water is cooled by a cooling tower through a condenser cooling loop, is mixed with low-temperature cooling water stored at night, and is introduced into a surface type condenser inlet; or the water supply of the cooling tower to the surface type condenser is cut off, and the low-temperature cooling water stored at night is fully introduced into the surface type condenser, so that the insufficient cooling capacity in the peak period in the daytime is compensated, and the cross-period transfer of the cooling capacity is realized.