157results about How to "Reduce traffic" patented technology

The invention relates to the technical field of information resource security management, and particularly discloses a security management method and system based on computer information resources and a storage medium, and the method comprises the steps: obtaining user identification information of a user, extracting a reference evaluation information set, analyzing a user behavior abnormal evaluation value, and judging a user behavior tag. If the user behavior label is judged to be in a potential risk mode, communication end current limiting is carried out, abnormal secondary verification is started, a user behavior abnormal verification evaluation value is analyzed, user behavior label re-judgment is carried out, and user permission locking measures are determined. Potential risks can be perceived in time, the situation that potential safety hazards are gradually expanded under the condition that the potential safety hazards are not perceived is avoided, and the user permission locking accuracy is improved. For a potential risk mode, communication end current limiting is carried out and secondary verification is started, so that network activities of abnormal users are effectively limited, security risks are reduced, the risk degree of user behaviors is comprehensively and accurately judged, and the stability of the system and the security of information resources are guaranteed.

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.

The invention provides a fuzzy privacy set intersection method and system, a medium and electronic equipment, and the method comprises the steps: carrying out the encryption processing of an initial data set X through a homomorphic encryption algorithm, obtaining first data, and obtaining a processed data structure D through a defined space Hash algorithm; the receiver performs homomorphic addition or scalar multiplication operation processing on the first data by using own data Y, and performs confusion processing by using a random number R to obtain second data; after the sender carries out Augment algorithm processing on the random number, a Hash algorithm is carried out to obtain a corresponding Hash value, and the Hash value is recorded as third data to be sent to the sender; and the sender decrypts the second data, processes the second data through an Augment algorithm, executes a PSI protocol with the receiver to obtain fourth data, and compares the third data with the fourth data to obtain intersection data. According to the method, an addition homomorphic technology is adopted for a novel application scene of intersection of the fuzzy privacy set, and compared with a full homomorphic technology in the prior art, the time consumption is less, and the communication is small.

The invention belongs to the technical field of federated learning, and more specifically relates to a privacy protection personalized federated learning method based on model hierarchical optimization. The method comprises the following steps: each client obtains a global model of a server side, updates a local model by using a training data set of a self-side, then performs hierarchical optimization on the local model, and determines partial model parameters to be uploaded of each client; partial model parameters to be uploaded by each client are cut, differential privacy noise is introduced, and then the model parameters are sent to a server side; the server side allocates a weight to each client according to the size of the data volume of each client, then aggregates the model parameters uploaded by each client to obtain a new global model, and sends the new global model to each client; and repeating the steps S1 to S3 until a set training round or convergence is achieved. According to the method, the problems of model performance influence and communication efficiency caused by heterogeneity in federal learning are solved while user privacy is guaranteed.

The invention provides a sand remover capable of adjusting ventilation quantity. The sand remover comprises a shell; the sand removal mechanism comprises sand removal assemblies and a sand collection box, the sand removal assemblies divide the interior of the shell into a sand collection channel and an exhaust channel, each sand removal assembly comprises an air guide part and a rotating shaft, any air guide part comprises a movable blade, a sand removal channel is formed between every two adjacent air guide parts, and sand dust enters the sand collection box through the sand collection channels and is discharged from the rotating shaft; the gas subjected to sand removal enters the exhaust channel from the sand removal channel and then is exhausted; and the adjusting mechanism is connected to the sand removal assembly and drives the movable blades on the same air guide piece to be opened and closed relatively so as to adjust the ventilation quantity of the sand removal channel. According to the sand remover capable of adjusting the ventilation quantity, the ventilation quantity of the sand remover can be flexibly adjusted through the sand removing assembly, and therefore the sand remover can flexibly work according to actual use requirements. Compared with a conventional sand removing technology at the present stage, the sand remover has the remarkable advantages of being flexible to use, high in controllability, wide in application range, stable in sand removing effect and the like.

The invention discloses a method for reducing slag entrapment of a tundish in the steel ladle exchange process. The technical problem of slag entrapment in the steel ladle exchange process in the prior art is solved. The method comprises the steps that a first steel ladle stops pouring and ascends; the second steel ladle is placed above the tundish and gradually descends, and meanwhile air is blown to a long nozzle of the second steel ladle till the long nozzle of the second steel ladle is inserted into the position, below 280 mm-320 mm, of the liquid level in the tundish; the long nozzle of the second steel ladle is connected with a skimmer, the skimmer comprises a connecting section and a skimming section which are connected with each other, the connecting section is connected to the long nozzle, and the outer diameter of the skimming section is sequentially reduced from top to bottom; the sliding plate of the second steel ladle is opened, so that molten steel in the second steel ladle flows into the tundish through the long nozzle, and steel ladle exchange is completed; the air blowing amount under the condition that the insertion depth H of the long nozzle is not greater than 150mm is greater than that under the condition that the insertion depth H of the long nozzle is greater than 150mm, so that slag entrapment is reduced. According to the method, the slag entrapment amount of the molten steel can be reduced, the cleanliness of the molten steel is improved, and the stamping cracking rate of finished products is reduced.

The invention discloses a multi-frequency ultrasonic vacuum emulsification reaction kettle and a using method thereof, and relates to the technical field of emulsification reaction kettles, the multi-frequency ultrasonic vacuum emulsification reaction kettle comprises a bottom plate, a supporting plate and a supporting cabinet are installed at the top of the bottom plate, the supporting cabinet is located on one side of the supporting plate, and partition plates are uniformly arranged in the supporting cabinet; an ultrasonic generator is installed between the partition plate and the supporting cabinet, connecting rods are installed on the outer wall of one side of the supporting cabinet and the outer wall of one side of the supporting plate, a reaction kettle outer cylinder is installed between the two sets of connecting rods, and a vacuum pump is installed at the top of the bottom plate. Emulsifying is carried out in a mode of combining multi-frequency ultrasonic cavitation and a vacuum environment, so that the emulsifying reaction can be carried out at lower temperature and pressure, the influence on heat-sensitive materials and volatile components is reduced, the device can be suitable for various materials with different properties, the application range of the device is expanded to a certain extent, and the production cost is reduced. Finer emulsification and dispersion effects are realized, the stability and quality of the product are greatly improved, and the production efficiency is improved.

This invention provides a coolant flow channel plate, relating to the technical field of vehicle thermal management. It includes a cover plate fixed to the top of a main board, with the main board and cover plate welded together at their side edges to form an internal flow channel cavity. The cover plate has refrigeration unit inlet / outlet assemblies on its surface. The main board has, from left to right, a heater pump mounting port, a battery pump mounting port, and a motor pump mounting port. The circuits between the heater pump and battery pump mounting ports, and between the heater pump and motor pump mounting ports, within the internal flow channel cavity are each equipped with a first anti-heat-spreading section. The circuit between the motor pump and battery pump mounting ports forms a variable-diameter section, with a second anti-heat-spreading section at its front end. A guide section is provided on the circuit of the battery pump mounting port. This invention solves the problem of lacking anti-heat-spreading structures at the connection points of circuits in different temperature ranges, achieving the technical effects of reducing vehicle weight, reducing vehicle connection piping, reducing heat loss in the thermal management system, and improving thermal management efficiency.

The utility model discloses a lithium battery breathing type liquid injection system which comprises a liquid injection production line, the liquid injection production line is a rectangular liquid injection production line and comprises a feeding retainer cup tray, a liquid injection unit, a vacuumizing unit, a turnover unit and a turnover discharging unit which are sequentially arranged, and a conveying line is connected between every two adjacent liquid injection units to form a rectangular closed loop; a feeding mechanical arm and a feeding conveying belt are arranged beside the feeding sleeve cup tray, and a discharging mechanical arm and a discharging conveying belt are arranged beside the turnover discharging unit. The conveying line is a rubber-coated roller conveying line, and a battery positioning module is arranged on the conveying line. The lithium batteries are circularly injected and vacuumized in batches through the rectangular production line, so that the problem of non-uniform infiltration of the existing batteries is solved, the high-temperature standing time of the batteries is shortened, the occupied space of a plant is reduced, and the equipment cost is reduced.

The application provides a target positioning method based on multi-station long-time passive angle measurement, which is applied to an information collection node and comprises the following steps: obtaining angle information of a target collected by a passive sensor in a preset time period, and a sampling position and a sampling time of the passive sensor; estimating a first sampling position and a first motion speed corresponding to the passive sensor at a first time according to the sampling position and the sampling time of the passive sensor; estimating first angle information of the target corresponding to the passive sensor at the first time according to the angle information of the target collected by the passive sensor and the sampling time; and sending the first sampling position, the first motion speed and the first angle information corresponding to the passive sensor to an information fusion center, so that the information fusion center estimates the position and the speed of the target at the first time according to the first sampling position, the first motion speed and the first angle information corresponding to the passive sensor, and the communication amount can be reduced and the positioning precision can be improved.

A die adjusting device of a press machine comprises a plunger type cylinder, a guide column, a nut lifting driving mechanism, an adjusting nut, a fixing seat and an upper cross beam. The lower ends of the guide columns are fixed to the base, and the upper ends of the guide columns penetrate through and extend out of the upper beam which is in sliding fit with the guide columns. A cylinder body of the plunger type cylinder is fixed to the fixing base, the fixing base is installed on the upper cross beam, and a plunger of the plunger type cylinder is arranged at the upper end of the guide column. The adjusting nut is sleeved outside the guide post in a penetrating manner, is in threaded connection with the guide post, is positioned above the upper cross beam and in the fixed seat, and is driven by the nut lifting driving mechanism to ascend or descend along the guide post; and the nut lifting driving mechanism is mounted on the upper cross beam. The die adjusting device of the press machine is simple in structure, simple in die adjusting and high in die adjusting precision.

The application relates to a water conservancy ditch sludge treatment device and a treatment method thereof, which comprises a sludge collecting mechanism for collecting and flocculating sludge, a mechanical extrusion mechanism for extruding flocculated sludge water and forming a mud cake to discharge free water in the sludge, and an electro-osmotic water filtering mechanism for continuously filtering water in the ice by the electro-osmotic mode to discharge bound water in the mud cake. The mechanical extrusion mechanism comprises a filter chamber for extruding water after collecting flocculated sludge water, a collecting assembly for collecting water at the bottom of the filter chamber, and a judging assembly for monitoring the flow rate of the mechanical extrusion water. If the flow rate is lower than a preset threshold value, it is determined that mechanical dewatering reaches the limit, the mechanical filter chamber bottom water outlet is closed, and the electro-osmotic water filtering mechanism is opened. The mechanical extrusion and the electro-osmotic mode are matched with each other, the effect of fully discharging sludge water is realized, and the efficiency of sludge recycling is improved.

Provided are a battery cell, a battery, an electrical apparatus, and a method and device for manufacturing a battery cell. The battery cell includes a case (110), an end cover (120), an electrode assembly (130) and a solder (140), the case (110) has an accommodating cavity (111) and an opening at one end; the end cover (120) is connected to the case (110); the electrode assembly (130) is provided in the accommodating cavity (111), the electrode assembly (130) has a first tab (131), and the first tab (131) faces the opening; the solder (140) is provided between the end cover (120) and the first tab (131) and connects the end cover (120) and the first tab (131); an insulating member (150) is also provided between the end cover (120) and the first tab (131), an insulating cavity (151) is provided on the insulating member (150), a feed port (152) is provided on one side of the insulating cavity (151), and the feed port (152) faces the solder (140).

The utility model relates to the technical field of pulp processing, and discloses a filtering device for grapefruit pulp processing, which comprises a feed inlet, the bottom of the feed inlet is communicated with a second hollow shell, the right side of the outer wall of the second hollow shell is fixedly connected with a waterproof shell, and the inner wall of the waterproof shell is fixedly connected with a motor. A rotating rod is fixedly connected to the output end of the motor, oval blocks are fixedly connected to the left side and the right side of the outer wall of the rotating rod, a filter screen is slidably connected to the middle of the inner wall of the second hollow shell, a filter plate is fixedly connected to the bottom of the inner wall of the second hollow shell, and a plurality of filter holes are formed in the top of the filter plate. The bottom of the second hollow shell communicates with a discharging opening. The motor is started to enable the rotating rod and the oval block to rotate, the filter screen vibrates, large-particle matter is filtered to the top, raw materials are further filtered through the filter holes and finally fall into the first hollow shell through the discharging opening, vibration filtering is achieved, and pulp is prevented from blocking the filter screen.

This utility model discloses a gas pressure regulating structure, relating to the field of gas pressure regulation technology. The utility model includes a regulating mechanism for controlling the gas intake volume and flow rate. The regulating mechanism includes a cylinder and a worm gear housing. The cylinder is hollow inside, and a housing is fitted onto its outer wall. Square boxes are installed at the center of both the front and back of the housing. This utility model uses an installation assembly: pressing a button downwards causes a cam at its bottom to rotate. When the cam rotates, it causes a hook to deflect, pulling the hook out of the rectangular hole of the insert rod. Then, moving the square cover upwards pulls out the insert rod. This allows for control of the rotation of the cam and hook via a button. When the lock is released, pulling the square cover upwards removes the cylinder. The disassembly process is relatively simple, ensuring efficient maintenance of the pressure regulator.

The present invention discloses a mold cooling liquid flow control method, system, device and storage medium, wherein the mold cooling liquid flow control method includes: determining the heat exchange capacity between the coolant in the liquid cooling pipeline and the outer layer of the molding object; judging whether the heat exchange capacity reaches the first preset heat exchange capacity; if the heat exchange capacity reaches the first preset heat exchange capacity, reducing the coolant flow entering the liquid cooling pipeline to increase the temperature of the outer layer of the molding object; judging again whether the heat exchange capacity between the coolant in the liquid cooling pipeline and the molding object reaches the third preset heat exchange capacity; if the heat exchange capacity reaches the third preset heat exchange capacity, increasing the coolant flow entering the liquid cooling pipeline, and returning to execute the step of judging whether the heat exchange capacity reaches the first preset heat exchange capacity. The technical solution of the present invention can reduce the defective rate of the molding object after demolding.

The application provides a kind of high molecular denitration system ammonia escape control equipment and control method, it is related to the technical field of removing nitrogen oxides in flue gas.The method applies the equipment, the equipment includes: denitration reactor, with the flue gas inlet pipe and the flue gas outlet pipe, the flue gas inlet pipe and the flue gas outlet pipe are sequentially provided with spray grid and reaction zone;Agent pipeline is connected with the spray grid;Adjusting mechanism;Ammonia escape detection mechanism is used to detect the ammonia escape in the flue gas outlet pipe;Control mechanism is used to control the adjusting mechanism according to the detection result of the ammonia escape detection mechanism, to adjust the flow size in the agent pipeline.When ammonia escape detection mechanism detects that the ammonia content in the flue gas outlet pipe is higher than the preset threshold, the flow in the agent pipeline is reduced by controlling the adjusting mechanism through the control mechanism, the ammonia escape is reduced, and the blockage and corrosion of the denitration reactor and downstream equipment caused by the generation of ammonium bisulfate due to water vapor, SO3 and ammonia escape in flue gas are avoided.

The invention provides a centrifugal collecting device. The centrifugal collecting device comprises a driving part and a driving part, the rotor assembly is connected with the driving piece; the liquid storage part is arranged on the rotor assembly, and the liquid storage part is provided with a liquid storage cavity; the flow guide assembly comprises a flexible flow guide pipe, and one end of the flexible flow guide pipe is connected with the liquid storage part and communicates with the liquid storage cavity; the flow adjusting part is connected with the rotor assembly, a slit is formed in the flow adjusting part, and under the condition that the flexible flow guide pipe is embedded into the slit, the flexible flow guide pipe deforms; the collection assembly comprises a treatment container, a filter part and a collection container, the filter part is arranged in the treatment container and divides the treatment container into a treatment chamber and a confluence chamber, the treatment chamber is communicated with the other end of the flexible flow guide pipe, and the confluence chamber is communicated with the collection container, that is, the effective stripping of the adsorbed secretions is realized; the dosage of a buffer solution is remarkably reduced, and the concentration of effective components in a collected solution is greatly improved, so that a detection result is closer to the content of real secretions in soil.

The invention relates to the technical field of power station gate valves, in particular to a supercritical power station gate valve capable of resisting high-speed steam impact and strengthening protection, which comprises a valve body and a pressure-resistant protection device arranged in an inner cavity of the valve body, an air inlet pipe and an air outlet pipe are arranged on the two sides of the valve body respectively, a mounting seat is arranged at the top end of the valve body, a valve rod is slidably arranged on the mounting seat, and a valve clack is connected to the bottom of the valve rod. A linear driving assembly used for controlling the valve rod to ascend and descend is further arranged on the installation base. The pressure-resistant protection device comprises a valve cage, the valve cage is arranged in an inner cavity of the valve body, at least three throttling holes are formed in the valve cage, the multiple throttling holes are distributed in an annular array mode along the axis of the valve cage, a spiral resistance wing plate is arranged on the outer wall of the valve cage, and the valve clack is located in the valve cage. The function of improving the impact resistance of the supercritical power station gate valve is achieved, and the problem that a gate body cannot accurately control the medium flow due to the fact that a traditional supercritical power station gate valve hinders medium flow at the front section of the gate is solved.

This application discloses a federated learning method, apparatus, device, and storage medium, relating to the field of privacy computing technology. Applied to a federated system composed of multiple participants, the method includes: acquiring the local model parameters of each participant in the federated system; iterating Round training through a local base network and an autoencoder's encoding / decoding layer, and determining the loss value corresponding to the completion of multiple epochs in each Round training process using a preset loss function; sending the local model parameters and loss values ​​to a secure aggregation server, receiving the global parameters and convergence status returned by the secure aggregation server, updating the local model parameters according to the global parameters, and stopping Round training when the convergence status meets preset conditions. The technical solution of this application can improve the learning effect of federated learning in scenarios where the participant data is not independent and identically distributed, and also improve training speed.

The utility model belongs to the technical field of nitrogen purging devices, and particularly relates to a heatable nitrogen purging device which comprises a purging instrument main body, a control panel is fixedly mounted on one side of the purging instrument main body, gas delivery pipes are uniformly arranged at the top end of the purging instrument main body, the bottom ends of the gas delivery pipes are connected with moving pipes, and the moving pipes are connected with the control panel. The purging instrument comprises a purging instrument main body, the purging instrument main body is provided with a plurality of movable pipes, the inner walls of the movable pipes are provided with mitigation assemblies, the outer walls of the movable pipes are provided with lifting assemblies, the bottom ends of the movable pipes are fixedly provided with gas needles, and one side of the purging instrument main body is provided with a water bath mechanism. The flow limiting plates are mutually folded and abutted to form a narrow-mouth cylinder, so that the flow in the moving pipe is reduced, the stability and the reliability of purging work are improved, the purity of a sample is ensured, and the purging effect of the sample is improved.

The present invention relates to the technical field of privacy information retrieval, and discloses a privacy information retrieval method and system based on GPU fast response, including: preprocessing database data to obtain preprocessed database data; storing the preprocessed database data in the GPU of the server; the CPU obtains the query data of the user client, the CPU sends the query data to the GPU, the GPU uses a homomorphic encryption algorithm to expand the query data to obtain the expanded query data; the GPU matches the preprocessed database data based on the expanded query data to obtain a response result in ciphertext form; the GPU sends the response result in ciphertext form to the CPU; the CPU sends the response result in ciphertext form to the user client, the user client decrypts the response result to obtain the decrypted response result. The present invention provides a GPU acceleration solution with low data transfer times and high execution efficiency.

The application relates to a liquid sheet injection system and method for X-ray free electron laser experiments, which comprises a pneumatic nozzle device, a flow control device, a signal acquisition device and a vacuum device; the pneumatic nozzle device and the signal acquisition device are respectively arranged in the vacuum device, the pneumatic nozzle device comprises a tube assembly, a gas capillary and a liquid capillary are respectively arranged in the tube assembly, and the gas capillary and the liquid capillary are connected with the flow control device; the end of the liquid capillary comprises two symmetrically arranged flow guide inclined surfaces, two symmetrically arranged abutting inclined surfaces and a bottom surface, the flow guide inclined surfaces and the abutting inclined surfaces are alternately distributed around the bottom surface, and a first outlet is arranged on the bottom surface; a gas micro-flow channel is formed between the end inner wall of the tube assembly and the flow guide inclined surface, and a second outlet is arranged at the end of the tube assembly. The application utilizes the compression and shearing effect of high-speed gas on liquid to generate a free-flowing liquid sheet with a sub-micron thickness under vacuum.

This invention discloses a device for inspecting bulge defects in cover glass, belonging to the field of cover glass defect detection technology. The technical solution includes a water tank with an inlet pipe, a glass fixing platform below the water outlet, and the glass being fixed at an angle on the glass fixing platform. A weighing platform is located below the glass fixing platform, and several electronic scales are spaced apart along the length of the glass fixing platform. This invention, by employing the principle of blocking water flow due to bulge defects in the cover glass, can accurately and effectively detect the location and defect level of the bulge defects.

The application discloses a DSP lock-free parallel clustering method based on adaptive division and boundary summary, comprising the following steps: obtaining original spatial point cloud data, determining a global calculation region and putting the global calculation region into a to-be-processed queue as a root node, and calculating the region potential energy corresponding to each region in the to-be-processed queue; when the regions in the to-be-processed queue are subjected to bisection cutting, final partitions are obtained; according to the final partitions, the original spatial point cloud data is traversed to obtain an extended data set and an index list of core attribution points; the index list of the extended data set is subjected to density clustering to obtain local clusters and a preliminary global cluster label vector; according to the triangle inequality, cluster summaries are screened and a union-find set is processed to obtain a union-find set result; and the union-find set result is mapped and converted into a continuous integer label to obtain a final clustering result. The application can realize a strictly consistent DBSCAN clustering effect on a multi-core DSP platform, and can meet the requirements of real-time performance, low communication overhead, scalability and high engineering reliability.

The present application relates to the field of centrifugal pump, concretely is a kind of horizontal self-priming centrifugal pump, including bracing plate, the bracing plate is used to support the support treatment of overall equipment;Water suction mechanism, the water suction mechanism is used to overflow when entering water, handle part water flow;Pressure relief mechanism, the pressure relief mechanism is used to when water pressure in pump is too large, the water flow treatment of discharge;Centrifugal mechanism, the centrifugal mechanism is used to produce rotation to water flow, and make water flow produce centrifugal force and flow out outward;The top of the bracing plate is fixedly connected with pump shell, the top of the pump shell is fixedly connected with water outlet pipe, the horizontal self-priming centrifugal pump, by the movement of half-open impeller towards the inside of water seal component, so that the blade on half-open impeller will be more and more close to the vertical plane where regulation block is located, thus with the rotation of half-open impeller, part centrifugal water flow will impact on regulation block, thereby play the role of reducing the flow and flow rate of water flow from water outlet pipe.

The utility model discloses an urban road lighting system which comprises a plurality of lamp subsystems, namely an Internet of Things lamp subsystem, an energy storage lamp subsystem and a photovoltaic lamp subsystem. Each communication unit is in signal connection with the corresponding lamp subsystem, the service management cloud platform is in signal connection with the communication units, and the service management cloud platform is configured to issue instruction signals to the corresponding lamp subsystems through the communication units. And receiving the internal information and / or environment information of the plurality of lamp subsystems through the communication unit so as to realize unified management of various and large-scale lamp subsystems. Through the synergistic effect of the communication unit and the business management cloud platform, unified management of various types of lamps is realized, and the business management cloud platform can receive internal information and environment information of each lamp subsystem through the communication unit, and issues instruction signals to each lamp subsystem, so that the lamp subsystems are controlled to be in a unified manner. Therefore, centralized control and monitoring of large-scale lamps are realized.

The electronic control unit according to the present embodiment includes at least one control unit including a first control unit including: a first cooling water jacket in which an inlet and an outlet are formed and in which a cooling water flow path through which cooling water passes and cooling fins are formed; a first flow valve for adjusting a cooling water flow path of the first cooling water jacket; a first housing disposed on the upper side of the first cooling water jacket; a first control board accommodated in a space formed between the first cooling water jacket and the first housing; a second housing disposed on the lower side of the first cooling water jacket; and a second control board accommodated in a space formed between the first cooling water jacket and the second housing.

A volute-free fan impeller efficiency testing device comprises a base, an air inlet panel is arranged on one side of the base, an air inlet flow guide ring is arranged on the air inlet panel, a sliding motor mounting seat is arranged on the base, and a servo driving mechanism is further arranged on the base to drive the motor mounting seat to slide and stay at a set position. A bearing seat, a fan shaft, a torquemeter and a driving motor are arranged above the motor mounting seat, the torquemeter is arranged between the fan shaft and the driving motor, and the center lines of the fan shaft, the torquemeter and the driving motor and the center of the air inlet flow guide ring are kept on the same straight line; the free end of the fan shaft is used for configuring and installing a to-be-tested volute-free fan impeller.

The present application relates to the technical field of artificial intelligence and federated machine learning, and particularly relates to an asynchronous federated learning aggregation method and system based on clustering cache. The present application clusters clients by intermediate features of the clients. In global aggregation, intra-cluster aggregation is firstly performed, and then global aggregation is performed based on client clusters. The client clusters are dynamically updated. In intra-cluster aggregation, an active set and a slow set are introduced to realize an asynchronous participation mechanism of intra-cluster aggregation. Weighted aggregation of the active set and the slow set solves the problem of system heterogeneity. The present application solves the defect of insufficient timeliness of existing federated learning methods in a data heterogeneous scene, and guarantees the timeliness and model training accuracy of federated learning in the data heterogeneous scene.