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77results about How to "Reduce load pressure" patented technology

Micro-grid cluster distributed control method and system based on information interconnection

The invention relates to the technical field of micro-grid distributed control, in particular to a micro-grid cluster distributed control method and system based on information interconnection. The method comprises the following steps: identifying a micro-grid cluster in a region, and extracting a plurality of micro-grid nodes; obtaining a plurality of microgrid operation state parameters; performing filtering standardization processing on the plurality of micro-grid operation state parameters, and constructing a micro-grid time sequence load change curve; discrete wavelet transform is carried out on the micro-grid time sequence load change curve, load fluctuation frequency trend mining is carried out, and micro-grid load fluctuation frequency trend characteristics are generated; carrying out data stream encapsulation on the load fluctuation frequency trend characteristics of the micro-grid, and constructing a cloud environment distributed computing framework; carrying out dynamic load demand calculation on the plurality of micro-grid nodes based on a cloud environment distributed calculation framework so as to obtain multi-period load demand prediction data of each micro-grid; according to the invention, high-efficiency microgrid cluster control with high energy utilization rate is realized.
Owner:NINGBO OSDA SOLAR CO LTD

New energy station management system and method based on smart power grid

The invention discloses a new energy station management system and method based on an intelligent power grid, and the system comprises a real-time monitoring module which is used for predicting the charging load fluctuation of an electric vehicle based on real-time monitoring data, a scheduling module which is used for adjusting the output of new energy power generation equipment according to the predicted load fluctuation, and an optimization module. The power distribution network management module is used for optimizing charging scheduling in a charging station and avoiding overload caused by peak charging at the same time, the dynamic adjustment module is used for dynamically adjusting the voltage and frequency of a power distribution network, and the real-time monitoring module is used for monitoring the state of the power distribution network in real time and dynamically updating a management strategy; according to the new energy station management system and method based on the smart power grid, the problems that in the prior art, due to instability and rapid change characteristics of electric vehicle charging loads, severe fluctuation of the loads can bring extra pressure to a power distribution network, the overload problem of the power distribution network is caused, and then the reliability and safety of the power grid are affected are solved.
Owner:HUANENG FUXIN WIND POWER GENERATION CO LTD

Electric vehicle cluster scheduling strategy and system based on deep reinforcement learning

The invention relates to the technical field of electric vehicle cluster scheduling, and discloses an electric vehicle cluster scheduling strategy and system based on deep reinforcement learning, and the method comprises the steps: determining an electric vehicle cluster scheduling range based on the charging willingness of a user; converting a cluster scheduling problem into a Markov process to obtain a conversion result; and designing a reward function for each charging station, and solving through a deep enhancement algorithm to obtain a final electric vehicle cluster scheduling strategy. According to the method, the load peak-valley difference and peak regulation cost of the urban power grid system are converted into an optimization problem by using deep reinforcement learning, so that the load pressure of the urban power grid system can be reduced, and normal and safe operation of a power distribution line is ensured; and the scheduling efficiency can be improved by considering the number of the electric vehicles needing to be scheduled instead of charging scheduling of all the electric vehicles in a city range.
Owner:GUIZHOU POWER GRID CO LTD

Memory resource processing method and device, equipment, medium and product

The invention discloses a memory resource processing method and device, equipment, a medium and a product, and relates to the field of Internet of Vehicles. The method comprises the steps of marking a first page to obtain a page identifier corresponding to the first page under the condition that the vehicle-mounted terminal has a switching display requirement of switching from the first page to a second page; loading page resources corresponding to the second page; and under the condition that the first page meets the page release condition, releasing memory resources occupied by the first page based on the page mark. According to the method, the memory resource occupied by the first page in the mobile terminal is released under the condition that the quitted first page meets the page release condition, so that the memory resource is released for the quitted page of the vehicle-mounted terminal in the vehicle-mounted interconnection scene; the situation that the memory of the mobile terminal is occupied too much due to the fact that the interconnection duration is long or the user operates the pages too much is avoided, the load pressure of the mobile terminal is reduced, and the stability of vehicle-mounted interconnection implementation is guaranteed.
Owner:GUANGZHOU KUGOU COMP TECH CO LTD

Remote sensing image slicing system and method based on FPGA

The invention provides a remote sensing image slicing system and method based on an FPGA (Field Programmable Gate Array). The system comprises a CPU (Central Processing Unit) module and an FPGA module, the CPU module is used for decoding an input original image and transmitting decoded image data and a corresponding first configuration parameter to the FPGA module; the FPGA module comprises an image slicing module and a memory module; the image slicing module is used for segmenting the original image into a plurality of slice images based on the first configuration parameter, and the memory module is used for storing the original image and the generated slice images. A CPU module and an FPGA module are combined, a plurality of image slices can be processed at the same time by means of the parallel computing capacity of an FPGA, and the processing speed and efficiency are improved; and the method has relatively low processing delay and flexibility.
Owner:EHIWAY MICROELECTRONIC SCI & TECH (SUZHOU) CO LTD

Active lift-augmentation tandem wing type ground effect aircraft

The invention relates to an active lift augmentation tandem wing type ground effect aircraft, and relates to the field of ground effect aircrafts. The defects that a stable take-off environment is needed, take-off time is long, and operation is complex are overcome. An active lift-increasing tandem wing type ground effect aircraft comprises a machine body, a cockpit is formed in the middle of the top of the machine body, connecting pieces symmetrically arranged in the direction of the machine body are fixedly installed on the front side and the rear side of the machine body correspondingly, and wing structures are fixedly connected to the connecting pieces on the front side and the connecting pieces on the rear side correspondingly; the inclination angle between the wing structures fixed to the connecting pieces on the front side of the aircraft body and the ground, the inclination angle between the wing structures fixed to the connecting pieces on the rear side of the aircraft body and the ground and the inclination angle between the wing structures fixed to the connecting pieces on the rear side of the aircraft body are larger than the inclination angle of the front-side wings. By means of the tandem wing type layout, the inclination angles of the paddles, the front wing structure and the rear wing structure relative to the ground are increased, and when the aircraft runs, the aircraft can obtain the maximum lift force compensation under the influence of the ground effect.
Owner:JIANGXI WENYU DIYI AIRCRAFT CO LTD

Fine energy management method and device for optical storage and charging integrated power station

The invention discloses an energy fine management method and device for an optical storage and charging integrated power station. The method comprises the following steps: determining the charging power difference between the power generation power of new energy of the power station and the power required by charging of an electric device; establishing a relation function between the unit electricity price and the charging power difference of the power station, and representing the charging power difference through the unit electricity price; the unit electricity price is used as an input variable of the fuzzy logic controller, and the output current of the energy storage battery is used as an output variable of the fuzzy logic controller; and the magnitude and the flow direction of the output current of the energy storage battery are controlled by using the output result of the fuzzy logic controller. By adopting the scheme, the expected charging and discharging state of the battery is controlled, the service life of the battery is prolonged, the transmission power between the power station and the power grid is stable, no large instantaneous fluctuation exists, stable control over the light storage and charging integrated power station is achieved, meanwhile, the dependence of the power station on the external power grid is reduced, and the economic benefits of power consumers are improved.
Owner:STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER CO +1

Request shunting system based on configuration algorithm

The invention relates to a request shunting system based on a configuration algorithm, and relates to the field of computer networks and software engineering. The system comprises a data acquisition module which is used for collecting server state information and network request characteristics; the configuration algorithm module is used for adjusting a load distribution strategy of the server; the strategy configuration module is used for customizing and testing a shunting strategy by a background administrator; the shunting decision module is used for performing shunting decision on the output result of the configuration algorithm; the execution module is used for executing the shunting decision and guiding a request for executing the shunting decision to the server or the processing logic; and the monitoring and self-adaption module is used for monitoring the shunting effect and adjusting the shunting rule. According to the invention, the method achieves the dynamic adjustment of the request distribution strategy, guarantees that the server is still effectively processed when a fault or overload occurs, achieves the differentiated processing mode of the request, simplifies the system configuration, and improves the operation and maintenance efficiency.
Owner:HAIER CONSUMER FINANCE CO LTD

Access control method and device and computer equipment

The invention relates to an access control method and device and computer equipment. The method is applied to a remote network interface card of a server, and comprises the following steps: in response to an access permission acquisition request of a target shared storage device sent by a current computing node, acquiring access permission information of the target shared storage device for the current computing node, and sending the access permission information to the current computing node, and indicating the current computing node to control to access the target shared storage device according to the access permission information. By adopting the method, the virtual machines on the plurality of computing nodes can be controlled to perform coordinated access on the shared storage device, so that data acquired by the plurality of virtual machines on the plurality of computing nodes are prevented from conflicting, the data consistency can be ensured, and the fence reading and writing capability is improved.
Owner:CHINA TELECOM CLOUD TECH CO LTD

Power grid energy management optimization platform based on big data

The invention discloses a power grid energy management optimization platform based on big data, and relates to the technical field of power grid energy management, and the platform comprises the following steps: firstly, deploying real-time power monitoring equipment in an area where high-tech industries are centralized, and obtaining real-time power consumption data of enterprises and key electric equipment in real time through the power monitoring equipment; and a data interface is established, an enterprise is allowed to autonomously upload power utilization data of internal key equipment, and the comprehensiveness and accuracy of the data are improved. According to the scheme, through real-time power monitoring, feature extraction and machine learning model evaluation, accurate monitoring and intelligent scheduling of power consumption are realized. Aiming at normal and surge power demands, stable power supply and efficient utilization of resources are ensured through load prediction and a distributed optimization algorithm, risks of network paralysis, power failure and the like caused by sudden power demands are avoided, and enterprise operation and power grid safety are guaranteed.
Owner:南京迅集科技有限公司

Steel rolling equipment foundation platform main beam bottom protection layer control device and construction method

The invention relates to the technical field of metallurgical buildings, in particular to a steel rolling equipment foundation platform main beam bottom protection layer control device and a construction method.The beam bottom protection layer control device is placed above a platform plate at the top of a steel pipe support system and stretches across a main beam rib, and a beam bottom cushion block is placed between the bottom of the main beam rib and the platform plate; the device comprises a support base supported on the top face of a platform plate, a support vertical rod is vertically and fixedly connected to the support base, height adjusting telescopic pieces are installed on the top of the support vertical rod, a support transverse rod stretching across a main beam rib is installed between the two height adjusting telescopic pieces, and a hook used for hooking the main beam rib is vertically installed on the support transverse rod. The device is arranged across a main beam, the weight of a main beam rib is transferred to the platform plate through the support vertical rod and the support base, stress is dispersed, the load pressure of the beam bottom cushion block is reduced, the effect that the thickness of a protection layer is doubly controlled through the beam bottom cushion block and the control device is achieved, and the device can also serve as an auxiliary lifting frame when the main beam rib is bound.
Owner:CHINA MCC22 GROUP CORP LTD

Emergency gear shifting fork system

The utility model discloses an emergency gear-shifting shifting fork system, relates to the technical field of power transmission devices, and aims to solve the problems that the load on a transmission shaft is relatively large and the transmission shaft vibrates and spreads to damage a gear-shifting shifting fork in emergency gear-shifting reconditioning. According to the emergency gear-shifting shifting fork system, the gear-shifting gear sleeve, the butt-joint gear sleeve and the emergency gear are arranged, so that the influence of environmental factors on emergency gear-shifting transmission is reduced, and the reliability of emergency gear-shifting transmission is improved; and the servicing weight of the emergency gear shifting fork structure is reduced, the load pressure of a gear shifting fork system on a power source is reduced, and the possibility that the power source of a transmission shaft is influenced by accidental transmission movement of an emergency gear shifting system is reduced. By arranging the limiting pin and the shifting fork shaft, the possibility that mechanical movement such as vibration of a transmission system spreads to emergency shifting is reduced, the possibility that the servicing state of an emergency gear shifting system fails is reduced, and the maintaining effect of the emergency function of gear shifting preparation is improved.
Owner:ZHEJIANG WANLI YANGZHIQU TECHNOLOGY CO LTD

Workflow processing method and device, storage medium, and electronic device

The embodiment of the present invention is about a method and device for processing a workflow, a storage medium, and an electronic device, and relates to the field of computer technology. The method includes: receiving a processing request including a workflow to be processed, responding to the processing request to determine whether there is process definition information corresponding to the workflow to be processed in a local cache pool; when it is determined that there is a process definition corresponding to the workflow to be processed in the local cache pool, executing the workflow to be processed according to the process definition information; when it is determined that there is no process definition information corresponding to the workflow to be processed in the local cache pool, obtaining the process definition information corresponding to the workflow to be processed from a distributed cache cluster, and executing the workflow to be processed according to the process definition information. The embodiment of the present invention improves the efficiency of executing the workflow to be processed.
Owner:BEIJING JINGDONG SHANGKE INFORMATION TECH CO LTD +1

Space laser communication monitoring and interaction integrated detection device

This invention belongs to the field of space laser communication and deep space exploration technology, and discloses an integrated detection device for space laser communication monitoring and interaction. The device includes a main body, on which are integrated a solar panel, a navigation imaging device, a communication antenna, a communication receiver, a radar, a landing support, and functional components for communication monitoring, environmental perception, and interactive operation. This invention forms a closed-loop system through electrical, signal, and mechanical connections, enabling simultaneous execution of multiple tasks, significantly improving the device's space operation efficiency, reducing the load pressure on space launch vehicles, and adapting to the space constraints of on-orbit operations. The communication antenna and receiver achieve bidirectional signal interaction through a high-speed laser communication module and are linked with the navigation imaging device and environmental sensors to ensure stable transmission and status monitoring of laser communication signals, which is beneficial for practical applications and operations.
Owner:MAIGE INTELLIGENT TECHNOLOGY (WUHAN) CO LTD

A linear scalability cluster construction system and method

The present invention provides a system and method for building a linear scalability cluster, the building system comprising: dividing into business units and global units according to the data characteristics of the service during deployment; dividing into logical units and physical units from the deployment architecture. Data splitting according to the business dimension reduces the connection bottleneck and capacity bottleneck of a single database, and reduces the fault isolation granularity when the service or database fails. Reduce the service and database load pressure of a single computer room, reduce the fault isolation granularity, solve the complexity of capacity estimation and expansion, reduce the cost of fault switching, and have extremely high linear scalability.
Owner:DIGITAL CHINA FINANCIAL SOFTWARE LTD

Data sharing system based on P2P technology

The invention discloses a data sharing system based on the P2P technology, and relates to the technical field of data sharing, data pre-shared by a user is obtained through a client module and is shared to other trusted clients, an equipment scoring unit scores the trusted clients, and the trusted clients are shared by the equipment scoring unit. The sharing analysis unit periodically analyzes the data capacity and click time of all the shared data and calculates a sharing capability evaluation amount in combination with an equipment score, and the sharing management unit intercepts a plurality of trusted clients according to the sharing capability evaluation amount to obtain a sharing management table; then, after a certain client module pre-shares the data, a sharing client is preferentially selected from the sharing management table, and the sharing client replaces the transfer service unit to carry out data sharing operation, so that the load pressure of the server on the shared data can be greatly reduced through the mode; and meanwhile, the shared resources of the trusted client can be reasonably utilized as much as possible.
Owner:ZHONGSHUI SANLI DATA TECH CO LTD

Domain name resolution method and device based on domain name request risk management and control

The application discloses a domain name resolution method and device based on domain name request risk management and control, the method comprises the following steps: identifying domain name requests as normal domain name requests or abnormal domain name requests; according to the user domain name access behavior data set and the abnormal domain name association strength, evaluating the security rating and the security score of the user; sending the normal domain name requests initiated by users with different security ratings to the DNS server subset cluster corresponding to their levels, so that the DNS server subset cluster of the level responds to the normal domain name requests in order based on the security score; predicting the normal domain names with high probability of access to form a domain name resource list, which is used to cache the domain name resource list to the selected DNS server when the security rating of the user is higher than the set threshold, so as to improve the domain name resolution cache hit rate and the resolution efficiency. The application solves the problem of reduced performance of the domain name server caused by the low utilization rate of the conventional DNS server due to the zombie network attack.
Owner:INST OF SOFTWARE - CHINESE ACAD OF SCI

Message polling resending method, device, server and storage medium

This application relates to the field of mobile communication technology, and in particular to a message polling resending method, apparatus, server, and storage medium. The method includes: obtaining a message report push table and a client status table; identifying service messages in the message report push table that have been pushed to the target client but not received by the target client, and identifying the client status of the target client in the client status table; and when the client status is online, polling and resending service messages to the target client at first preset intervals. This solves the problems in related technologies, such as the inability to balance server performance and timeliness, leading to excessive server load, degraded client performance, and the inability of the server to monitor the real-time status of the client, which can easily result in incorrect concatenation of interface request results.
Owner:CHERY AUTOMOBILE CO LTD

Monitor for real-time remote positioning of golf

ActiveCN224111246UIncrease the shade areaavoid overexposureCamera filtersCamera body detailsImaging qualityMechanical engineering
The utility model discloses a monitor for golf real-time remote positioning, which comprises a monitoring camera body, the surface of the monitoring camera body is sleeved with a shell, the shell can slide back and forth on the surface of the monitoring camera body, the two sides of the shell are fixedly connected with supports, and the supports are fixedly connected with the monitoring camera body. The side, away from the shell, of the support extends to the bottom of the monitoring camera body and is fixedly connected with a sleeve plate, the bottom of the monitoring camera body is movably connected with a transmission rod through a bearing, the surface of the transmission rod is fixedly connected with a rotating wheel, and the bottom of the rotating wheel is fixedly connected with a sliding rod located in the sleeve plate. And the sliding rod is in sliding connection with the sleeve plate. According to the utility model, the housing slides back and forth on the surface of the monitoring camera body, the amount of light entering the camera is directly controlled, the housing moves forward to enlarge the shading area, overexposure or identification interference caused by direct sunlight is avoided, the housing moves backward to reduce the shading range, the amount of light entering is increased, and the imaging quality in a low-light environment is improved.
Owner:WUXI HAOYING SPECIAL VEHICLE CO LTD

Target signal enhancement method based on generative adversarial network

The invention relates to a target signal enhancement method based on a generative adversarial network, which belongs to the technical field of signal processing, and comprises the following steps: S1, carrying out adversarial training on a generator and a discriminator of the generative adversarial network by using a training set, and adding an attention mechanism and an audio restoration module in the training process, obtaining a trained target signal enhancement model; s2, using the trained target signal enhancement model to carry out identification, extraction, denoising and restoration processing on the complex signal sample to obtain a target signal; and S3, carrying out model pruning and retraining on the trained target signal enhancement model so as to optimize the target signal enhancement model. According to the method, the precision and effect of target signal processing in complex signals are improved, and more real-time and reliable signal data processing capability is provided for complex signal scene application.
Owner:CHONGQING UNIV OF POSTS & TELECOMM

A message processing method and related apparatus

This invention discloses a message processing method and related apparatus, relating to the field of message processing. When the current message cache is not full, the main thread receives live messages and submits them to a HandlerThread for asynchronous parsing to obtain different message types. Corresponding caching strategies are then applied, retrieving image cache data from the ImageSpan cache and text cache data from the plain text cache, assembling them into a complete live message, and inserting it into a RecycleView queue for message aggregation caching. The complete live message is then inserted into a scrolling control in the RecycleView list for display. Based on a preset scrolling strategy, the complete live message is directly scrolled and displayed using a SpannableString cache. This invention utilizes HandlerThread for asynchronous message processing, a three-layer caching mechanism to optimize performance, and strategy parsing to decouple rendering logic, ensuring the main thread maintains a high frame rate.
Owner:GUANGZHOU QIANJUN NETWORK TECH CO LTD

Mobile phone number one-key login method, device, electronic device and storage medium

The present invention relates to a method, device, electronic device and storage medium for one-key login via mobile phone number. The method comprises: receiving a pre-number acquisition request sent from an operator number acquisition SDK, and generating an access code in response to the pre-number acquisition request. Based on the access code, the number of successful pre-number acquisitions of the currently enabled program is updated, the pre-number replacement ratio is calculated, and a mobile phone number mask image is generated according to the pre-number replacement ratio. The mobile phone number mask image and the access code are fed back to the operator number acquisition SDK, and the operator number acquisition SDK calls an API callback function to feed back the mobile phone number mask image and the access code to the agent SDK. The agent SDK calls an API callback function to feed back the mobile phone number mask image and the access code to the currently enabled program to obtain user authorization information. After the user agrees to the authorization, a login request is sent to the application backend service, and the application backend service responds to the login request by initiating a number replacement to the operator backend service to perform one-key login via the mobile phone number.
Owner:CHINA UNICOM ONLINE INFORMATION TECHNOLOGY CO LTD

Test file generation method and computing device

The embodiment of the invention provides a test file generation method and computing equipment, and the method comprises the steps: obtaining a code generation request which is used for requesting to generate a test file corresponding to initial code information; splitting the initial code information to obtain a test requirement field and a method list, the test requirement field being used for indicating a code generation requirement corresponding to the initial code information, and the method list comprising at least one class method; according to the test requirement field, various methods in the method list are processed through a first model, and at least one result file is obtained; and extracting multiple pieces of test information from the at least one result file, and merging the multiple pieces of test information to obtain a test file. According to the method, the memory overflow phenomenon of the processor during code generation processing of the AI model is avoided, and the integrity and accuracy of the test code generated by the AI model can be guaranteed.
Owner:HENAN QINWEI DIGITAL TECHNOLOGY CO LTD

Internet-based management and control analysis system

The application discloses an internet-based management and control analysis system, and a running method thereof, which comprises the following steps: collecting and processing industrial internet data information; performing data cleaning and persistent processing on the collected industrial internet data information; performing running analysis, optimization management and security alarm control management on the industrial internet; the collecting and processing of the industrial internet data information comprises the following steps: starting a thread to listen to a port and collect industrial internet data information, receiving data according to the corresponding port, and writing manufacturer information; the data cleaning and persistent processing on the collected industrial internet data information comprises the following steps: classifying and cleaning the received data, classifying different types of data generated by different manufacturers and different devices, and filtering and filling data information fields. The application has the characteristics of high safety and efficient analysis management.
Owner:SHANDONG SHISHU INFORMATION TECHNOLOGY CO LTD

User-side efficient energy storage management system based on big data

The invention belongs to the technical field of energy storage management, and particularly relates to a user-side efficient energy storage management system based on big data, and the system comprises a power generation unit, an energy storage unit, a detection unit, a control platform, a power utilization plan module, and a scheduling plan module. The power generation unit generates electric energy through a power generation assembly and transmits the electric energy to the energy storage unit. Adaptation is carried out according to the actual scale of the user side, the power generation units and the storage units are correspondingly arranged according to the number of the workshops, and under the condition that no less than one set of workshops exist, the power of the multiple storage units can be connected with power supply of any workshop through the storage distribution module, that is, one workshop always adopts power grid power supply; and the power grid power supply of the other plant is switched by utilizing the power generation quantity of the two power generation units and the energy storage of the two storage units and combining the power consumption of the plant, so that the electric charge can be saved, the pressure of the user side on the regional power grid load can be reduced, and the frequency of power supply switching can be reduced.
Owner:CHINA POWER CONSTR (NANJING) ENG CO LTD

Large-span steel-wood truss structure for roof

ActiveCN224647861Usmall sizeeasy to shape
The utility model relates to building structure technical field, specifically disclose a large-span steel wood truss structure for roof, include: end support block, it sets up in steel wood truss structure both ends, and is connected with building foundation structure, the end support block one side is arranged as the support of adapting with butt joint truss, and butt joint truss, standard truss and arc truss connection constitute truss main body structure, the support of end support block and the installation groove inlayed connection of butt joint truss one end. This large-span steel wood truss structure for roof, the inlayed connection cooperation structure of butt joint truss and end support block is filled with structure glue, utilizes the deformation adaptability of inlayed surface friction and glue, and the initial deformation difference of steel wood interface is buffered, and the node steel bar group of positioning frame one both sides is passed through the axial force transmission of the gripping force of steel bar and component, and positioning bolt one passes through radial constraint and limits lateral deformation, and the force flow interference is avoided by the staggered distribution of both, and stress concentration is reduced.
Owner:CHINA RAILWAY NORTHEAST INVESTMENT DEV CO LTD +1

Information processing system, method, gateway and storage medium based on cloud desktop service

The embodiment of the application provides an information processing system and method based on a cloud desktop service, a gateway and a storage medium. In the embodiment of the application, under the assistance of the gateway, multi-user collaborative operation of a cloud desktop server can be completed through only one TCP connection, thereby greatly reducing the number of TCP connections required to be established by the cloud desktop server. Meanwhile, the gateway also undertakes part of the functions of the cloud desktop server, thereby reducing the load pressure of the cloud desktop server, saving the computing power resources of the cloud desktop server, and guaranteeing the working performance of the cloud desktop server and the use experience of the cloud desktop service.
Owner:ALIBABA (CHINA) CO LTD

A leakage-proof sealing device for centrifugal pump installation

The present disclosure relates to the technical field of centrifugal pump matching tool, and provides a leakage-proof sealing device for centrifugal pump installation, which comprises an outer sleeve, an inner sleeve arranged in the inner part of the outer sleeve, a sealing assembly arranged in the inner part of the outer sleeve, and a lateral connecting assembly arranged on the lateral wall of the outer sleeve and the inner sleeve; a rotating wheel is sleeved on the connecting shaft, and the rotating wheel is in close contact with the inner part of the inner cavity. Through the above technical scheme, the problem that the sealing material is easily worn out due to the continuous friction between the pump shaft and the shaft seal material during high-speed rotation in the prior art, thereby reducing the sealing performance and causing the liquid to leak from the gap between the shaft and the pump shell is solved. The traditional packing seal often uses materials such as graphite wire and hemp rope. When these materials are used to face the high-speed rotating pump shaft, the wear rate is extremely fast, not only frequent maintenance and replacement are required, but also the liquid leakage is difficult to effectively prevent, and there is also the technical problem of environmental pollution.
Owner:上利石集团(石家庄)泵业科技有限公司

A cryogenic pump for uniform adsorption of low temperature surfaces

The present invention belongs to the technical field of cryopumps, and specifically relates to a cryopump with uniform adsorption of cryogenic surfaces. It comprises a pump body, a refrigerator and a cryogenic array, wherein the pump body has a main air inlet, a front-stage radiation shielding cylinder is arranged around the main air inlet, the cold head of the refrigerator is arranged in the pump body, and the cryogenic array is arranged on the cold head. The cryogenic array is composed of a cryogenic surface box and a cryogenic surface group, and the cryogenic surface group is composed of a number of cryogenic panels fixed on the cold head at a set distance; a rear-stage radiation shielding cylinder is also arranged in the pump body, and the diameter of the rear-stage radiation shielding cylinder is larger than that of the front-stage radiation shielding cylinder, and the ends of the two are staggered to form a secondary air inlet in the pump body, and the secondary air inlet is connected to the gas guide inclined plate and arranged toward the cryogenic surface box. The cryogenic pump provided by the present invention can prevent a large number of sucked gas molecules from being adsorbed on the top cryogenic panel, resulting in excessive saturation of the top cryogenic panel, and a significant decrease in the pumping speed.
Owner:HEFEI GENERAL MACHINERY RES INST +2

Service management method and device, computer device, storage medium and program product

This application relates to a service management method, apparatus, computer device, computer-readable storage medium, and computer program product. The method includes: acquiring a renewal request initiated by a target organization for an advanced service; parsing the renewal request to determine the expected number of organizational members in the target organization who wish to have access to the service in the next cycle after the advanced service expires; if the expected number of members differs from the actual number of target members, determining the service type matched to each organizational member in the next cycle based on the expected number of members, and, upon the expiration of the advanced service, matching organizational members of the advanced service type in the next cycle and assigning access to the advanced service. The target organization includes multiple organizational members; the target members among these organizational members currently possess access to the advanced service. This method can improve work efficiency.
Owner:TENCENT TECHNOLOGY (SHENZHEN) CO LTD