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99results about How to "No overload" patented technology

Method for rapidly deploying extensible cluster

The invention relates to a method for rapidly deploying an extensible cluster. The method is implemented by using a modified DHCP server, a command line tool and a node daemon, wherein the modified DHCP server is responsible for distributing IP addresses and assigning TFTP server addresses for nodes to be deployed, intensively managing all nodes which are being deployed and are deployed successfully and preferentially selecting a node with the lightest load from the successfully deployed nodes while selecting a TFTP server; the command line tool can dynamically modify configuration information read in when the DHCP server starts so as to make use of hardware resources of the deployed nodes in a better way and perform a deploying process stably; the node daemon is downloaded from a main deployment server after the installation of a script in kickstart is completed, runs automatically and is responsible for reporting the state of the node daemon to the main deployment server, downloading a necessary file, starting TFTP and NFS services and the like. The method can adapt to the extension of cluster scale, achieves deployment effect which becomes more remarkable along with the extension of the cluster scale, has a flexible operation and controls an entire deployment process by configuring files or command lines.
Owner:SHANGHAI JUNESH INFORMATION TECH CO LTD

Submersible electrohydraulic control gate valve for mining

A submersible electrohydraulic control gate valve for mining is provided with a pull weight board which is connected with a gate valve lead screw and an electrohydraulic control system, wherein the electrohydraulic control system comprises an anti-explosion submersible electrical machine which is connected with the gate valve lead screw by an airbag type hydraulic actuator; the pull weight board is connected with the gate valve lead screw by a lead screw connecting rod through corresponding thread, a lock nut locks the pull weight board and the lead screw connecting rod, the lead screw lock nut limits the position of the lead screw connecting rod in the connection of the lead screw and the lead screw connecting rod; and the gate valve is connected with a gate valve wedge plate by the gatevalve lead screw through a T-shaped groove. In the invention, complicated mechanical drive structures are not used, the explosion-proof electric machine is used as a power source, the hydraulic control system is used to drive an oil cylinder and the problems that manual and electric gate valves have bad reliability and high failure rate because the lead screw is used for rotating can be solved, the normal operation of a drainage system can be ensured. The submersible electrohydraulic control gate valve has high reliability and can carry out underwater operation for a long time.
Owner:TAIYUAN UNIV OF TECH

OpenFlow-based distributed controller system in SDN network environment

The invention discloses an OpenFlow-based distributed controller system in SDN network environment. The system comprises a decision-making device module, a controller resource pool, an OpenFlow control server and OpenFlow switches; the decision-making device module is a core of a function of the whole system and is responsible for detection of active_controllers, i.e. controllers in a working state, and, when the decision-making device module is in an overload state, a load balance decision is made, a new controller is called from the resource pool to join work, load conditions of the active_controllers are periodically checked, and the resource recovery of the controllers is completed; the controller resource pool collects all the active_controllers, i.e., a controller set in an idle stale, and dynamic increase and decrease of the resource pool are controlled by a decision-making device; the OpenFlow control server monitors an own load in real time, and the decision-making device is notified of a load condition when the OpenFlow control server is in an overload state; the OpenFlow control server monitors a command transmitted from the decision-making device furthermore, and completes own load condition reporting or own role switching; and the OpenFlow switches complete a data forwarding function, and participates in a load balance process when the controller is in the overload state.
Owner:NANJING UNIV OF POSTS & TELECOMM

Small unmanned plane undercarriage buffer

A small unmanned plane undercarriage buffer relates to the field of aviation aircrafts and solves problems of low buffering efficiency, easy bounce, low reliability of a present flat spring type buffer. The small unmanned plane undercarriage buffer comprises an external cylinder, a first spring on the external cylinder, an internal cylinder having a damping hole, an air sac between the external cylinder and the internal cylinder; an upper joint, a lower joint, a piston rod extending into the internal cylinder, a piston, a damping plate, a pressure-limiting valve, a check valve, a guide sleeve and a locking cover, wherein the piston rod is orderly covered with the piston, the damping plate and the pressure-limiting plate; the piston rod is orderly covered with the check valve, the guide sleeve and the locking cover; the check valve, the guide sleeve and the locking cover are all disposed in the external cylinder; an internal-external cylinder annular oil storage cavity is formed between the internal cylinder and the external cylinder; the damping plate axially moves along the piston rod; the pressure-limiting plate limits maximum damping force to a preset valve during compression stroke; after the locking cover is tightly screwed, the guide sleeve, the check valve and the internal cylinder are axially pressed to the lower joint; the check valve controls communication between the internal-external cylinder annular oil storage cavity and a right cavity of the internal cylinder; and two ends of a first spring are respectively pressed against the upper and lower joints. The small unmanned plane undercarriage buffer possesses high buffering efficiency, uneasy bounce, stable performance and great reliability.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Conveniently loading twin-screw extruder

The invention discloses a conveniently loading twin-screw extruder which comprises a rack. The upper part of the rack is fixedly connected to a supporting seat through a connecting rod, a conveying motor is mounted in a U-shaped slide, a rotating shaft is rotatably mounted on one side of the U-shaped slide through a supporting bearing, a first spring is connected to the rotating shaft in a sleeving manner, one side of the U-shaped slide is fixedly connected to an insertion rod, a second spring is connected to the insertion rod in a sleeving manner, a screw is thread-mounted on a fixed plate, one end of the screw is fixedly connected to a bushing, an adjusting hand wheel is fixedly mounted at the other end of the screw, a sealing bearing is fixedly mounted on the rotating shaft, a piston block is connected to the sealing bearing in a sleeving manner, and one end of the rotating shaft is fixedly connected to a spiral conveying blade. By means of resetting and pressure balancing characteristics of the springs, the conveniently loading twin-screw extruder feeds materials continuously and stably, is simple in structure and easy to operate and implement and is convenient to adjust the feeding pressure reasonably according to an actual production condition, so that the service life of the conveying motor is prolonged.
Owner:新沂天晟新材料有限公司

Mechanical lower forging extrusion and material ejection device of forging mechanical press

A mechanical lower forging extrusion and material ejection device of a forging mechanical press comprises a crank shaft arranged on a machine body; one end of the crank shaft penetrates through the machine body and is provided with an eccentric sleeve; a connection rod is installed on the eccentric sleeve, an upper pull rod is hinged to the lower end of the connection rod, and the lower end of the upper pull rod is connected with a lower pull rod through a belleville spring; the lower end of the lower pull rod is hinged to one end of a lever; the upper pull rod and the lower pull rod are installed on a bracket, and the bracket is connected with the machine body; a long hole is formed in the middle of the lever and internally provided with a third pin shaft, and the third pin shaft is arranged on a support fixedly connected with the bottom of the machine body; and the other end of the lever is provided with a rolling wheel making contact with the bottom of a material ejection seat, an ejection plate is arranged at the upper end of the material ejection seat, the two sides of the ejection plate are provided with air cylinders correspondingly, and a plurality of upper ejection rods are arranged at the upper end of the ejection plate and are installed in a workbench. The mechanical lower forging extrusion and material ejection device has the advantages of having a synchronous forging extrusion function or a drawing function or a asynchronous ejection function, and being diversified in purpose, adjustable in lower forging extrusion force or ejection force, capable of preventing overload, long in service life, high in product quality and the like.
Owner:RONGCHENG HUADONG METAL FORMING MACHINERY

Water conveying device for high floor

InactiveCN108869229AReduce deliveryRealize one-way transportPump controlPumpsWater storageWater source
The invention discloses a water conveying device for a high floor. The water conveying device comprises a main hollow housing. According to the water conveying device disclosed by the invention, a turbine element is changed to be in a longitudinal direction and realizes controllable pressure conveying, so the water conveying efficiency is obviously improved, water can be conveyed to a higher distance, repeated conveying is reduced, and high practicability is realized; moreover, the water conveying device comprises a first large-size pressure liquid one-way flowing control mechanism which can realize that the liquid enters a liquid compression position in one direction from a water storage position; besides, the water conveying device comprises a second large-size pressure liquid one-way flowing control mechanism; by utilizing the characteristics of the first large-size pressure liquid one-way flowing control mechanism and the second large-size pressure liquid one-way flowing control mechanism, a discharging effect is achieved; moreover, the water conveying device comprises a maximum rotation force control and protection mechanism and a universal rotating connecting mechanism, wherein the universal rotating connecting mechanism can be used for connecting a longitudinal moving component and a component which moves in a rotation angle, thus the movement direction of the componentis changed, and a liquid compression driving effect is achieved.
Owner:陈晓茜 +2

Transmission network dynamic reconfiguration method based on 3/2 wiring mode

ActiveCN107959286AComprehensive decision informationDynamic refactoring is automatically implementedAc network circuit arrangementsLow voltageTransformer
The invention discloses a transmission network dynamic reconfiguration method based on a 3/2 wiring mode. The transmission network dynamic reconfiguration method comprises the steps of: constructing atopological structure and parameter model of a power grid real-time mode or a mode to be studied, and evaluating capability and risks of independent district-wide operation of district power grids ofinterest; evaluating benefits and potential risks of electromagnetic looped network operation formed by the district power grids, and analyzing a cost of solving the electromagnetic looped network risks; analyzing a 3/2 wiring string configuration method in a transformer substation, and providing a dynamic reconstruction scheme for solving the electromagnetic looped network risk problem; and considering power supply reliability of a normal mode and potential risks of an accident mode, and deciding a district power grid operation mode optimal arrangement scheme and a power grid dynamic reconfiguration suggestion comprehensively. The transmission network dynamic reconfiguration method based on the 3/2 wiring mode avoids the load flow from shifting within the electromagnetic looped network in the accident mode, does not cause overload of low-voltage level equipment or damage to the system stability, and improves the operation safety of the system.
Owner:POWER DISPATCHING CONTROL CENT OF GUANGDONG POWER GRID CO LTD

Flameproof submersible electric pump for dual-cooling efficient mining

The invention relates to a flameproof submersible electric pump for dual-cooling efficient mining. According to the flameproof submersible electric pump, an oil-immersed motor as well as a water and oil resistant winding wire are adopted; a closed ring-shaped pressure regulating capsule is arranged in the inner cavity of the motor; a dual-cooling structure that strong water cooling in the outer cavity of the motor and self-circulation oil cooling in the inner cavity of the motor are combined is adopted for motor cooling; a mixed flow blade structure is arranged in front of the inlet of an impeller, a turbulent-flow-free balancing axial thrust technology is adopted for the inlet of the impeller, and no axial thrust balancing hole is formed, so as to solve the problem of liquid flow turbulence at the inlet of the impeller as well as effectively improve the axial thrust balancing effect and the pumping efficiency; and an electric pump shaft is in rolling bearing connection with an upper bearing seat and a lower bearing seat, so as to eliminate the phenomenon of eccentric abrasion caused by an improper electric pump mounting position. The flameproof submersible electric pump provided by the invention has the beneficial effects of being simple in structure, high in reliability, strong in practicability, efficient, and good in heat dissipation performance; furthermore, the flameproof submersible electric pump is simple to mount and wide in using range, and can be operated under various working conditions; and wastewater is pumped thoroughly, the total head is prevented from overloading, and the service life of the flameproof submersible electric pump is long.
Owner:河北省机械科学研究设计院有限公司

Energy-saving intelligent filter compensation metering comprehensive protection automatic transmission

The invention relates to the technical field of electric matched products, in particular to an energy-saving intelligent filter compensation metering comprehensive protection automatic transmission which comprises a box body. The inside of the box body is provided with an active power filter, a connection electric reactor, an isolation switch, a current transformer and an outgoing breaker. The active power filter is connected to the secondary side of the current transformer of a grid through the connection electric reactor. The upper end of the isolation switch is directly connected with the secondary side of the current transformer of the grid, and the lower end of the isolation switch is connected with the outgoing breaker through the isolation switch in an outgoing mode. According to the automatic transmission, harmonic currents on a bus are eliminated in real time, the operation efficiency of the transformer is improved, operation safety of the transformer and electric equipment is guaranteed, the phenomena of abnormal operation of the transformer, system resonance and compensation capacitor overflowing caused by harmonic currents are avoided, the service life of the equipment is prolonged, and the phenomenon that a capacitance box often fails in the prior art is avoided. The box transformer structure technically has the advantages of being modularized, small in size, attractive in appearance, safe and reliable in operation, convenient to maintain and the like.
Owner:ANHUI HUAZHENG ELECTRIC

Quasi-blackbody absorbent high-efficient concentration solar cell assembly

The invention relates to a photoelectrical conversion module of a concentrating photovoltaic system, which belongs to the technical field of solar utilization technique. The photoelectrical conversion module mainly comprises a strip-like lens array (19), a silicon battery (10), a flexible electrode (18), a conductive heat dissipation metal component (13), etc. The photovoltaic battery cell (10) has a strip shape, and the flexible contact electrode (18) with larger contact surface and the conductive heat dissipation metal component (13) with electrical conduction and heat dissipation functions are packaged on both sides of the upper surface of the photovoltaic battery cell (10) in a contact manner. The strip-like condensing lens array (19) is used for condensing parallel beams vertical to the upper surface, and the beams irradiate the region between two flexible electrodes on the surface of the photovoltaic battery cell after being condensed and diverged for one time. Continuously reflected by an upper space with a reflection layer, the most of the light beams are absorbed by the photovoltaic battery cell. The metal component (13) can transfer the heat of the photovoltaic battery cell (10). The solar battery assembly having the structure has smaller size and larger condensation multiple.
Owner:张德胜

Solar heating bathing and winter heating system for temporarily-built facilities of worker living quarter

The invention discloses a solar heating bathing and winter heating system for temporarily-built facilities of a worker living quarter. The system comprises a heat source, a shower pipeline circulating system, a first circulating system of the heating system, a second circulating system of the heating system and a PLC computer control cabinet; the heat source comprises a solar heating system and an auxiliary electric heating system; the shower pipeline circulating system is connected to a heating and heat storing water tank and comprises standby and used parallel temperature control switch control water pumps, gate valves and a group of shower nozzles which are sequentially connected; the first circulating system of the heating system comprises a water feeding loop and a water returning loop of the first circulating system, and the water feeding loop and the water returning loop are connected between the heating and heat storing water tank and the first secondary side of a plate heat exchanger; the second circulating system of the heating system comprises a water feeding loop and a water returning loop of the second circulating system, and the water feeding loop and the water returning loop are connected between the second secondary side of the plate heat exchanger and a heating pipeline of a temporarily-built house. According to the system, the technical problems of hot water bathing and winter dormitory heating for workers of the building industry in temporary accommodations can be solved.
Owner:THE THIRD CONSTR CO LTD OF CHINA CONSTR THIRD ENG BUREAU

Power distribution cooperation system based on intelligent charging energy router and cooperation method thereof

ActiveCN111817331AImprove real-time utilizationTo achieve the effect of cutting peaks and filling valleysPower network operation systems integrationAc network load balancingControl powerTransformer
The invention discloses a power distribution cooperation system based on an intelligent charging energy router and a cooperation method thereof. The power distribution cooperation system based on theintelligent charging energy router comprises a transformer, the intelligent charging energy router, a charging pile and other loads. The system further comprises at least one load measuring device, wherein the load measuring device is used for measuring electric power information of a load in the power loop. The intelligent charging energy router receives an actual power message reported by the load measuring device, and calculates the maximum power limited and output by the intelligent charging energy router; and the intelligent charging energy router adjusts the actual control power of the connected charging pile based on the maximum output power limited by the intelligent charging energy router so as to adjust the total load of the transformer. By controlling the power of the charging pile connected with the intelligent charging energy router, the intelligent charging energy router becomes a power distribution elastic load of the transformer, so that the real-time utilization rate of power distribution resources is improved on the premise that operation safety is kept.
Owner:SHENZHEN DINGWANG TECH CO LTD

Transformer station power supply range optimization method suitable for seasonal changes of loads

ActiveCN106953323AReduce power supply load momentNo overloadForecastingSystems intergating technologiesRural areaGraphics
The invention discloses a transformer station power supply range optimization method suitable for seasonal changes of loads, and the method enables the positions of transformers to serve as discrete cell points, and a Voronoi spatial pattern is generated through a simulation cell growth method. Moreover, transformer load level multi-load scene security constraint check is added in a growing process of each cell, and the method avoids the overloading caused by a condition that a transformer station cannot adapt to the seasonal changes of loads while reducing the largest power supply range and reducing the network loss and voltage drop loss. The method comprises the following steps: (1), simulating the growth of cells; (2), carrying out the multi-load scene security constraint check; (3), arranging a power supply range. The method guarantees that the transformer station is not overloaded during Spring Festival through the setting of the growing speed of the cells and the multi-load scene security constraint check mechanism while the power supply load moment of the transformer station is reduced as much as possible at ordinary time. The method is small in investment, is simple in operation and maintenance, is stable in supply region, and is suitable for all urban and rural regions.
Owner:国网江西省电力有限公司经济技术研究院 +1

Circuit overload protection and automatic reset device

The invention relates to the technical field of circuit protection, and discloses a circuit overload protection and automatic reset device. The right side of a piston is provided with a temperature sensing block, the inner bottom wall of an inner shell is provided with a spring, the inner shell is internally provided with a fixing plate and a connecting plate, the left side of the fixing plate isprovided with a fixing wheel, the right side of a first supporting rod is provided with a first contact point, the inner top wall of the inner shell is provided with a fixing rod and a second supporting rod, the bottom of the fixing rod is provided with a rotating shaft, the left side of the second supporting rod is provided with a second contact point, and a fuse is arranged between the second contact point and the first contact point. When the circuit is overloaded, the piston pushes the temperature sensing block to move, the temperature sensing block pushes the lower section of a movable plate to move rightwards through the connecting rod, the upper section of the movable plate is driven to move upwards, the left side of the fuse moves downwards, and the circuit forms an open circuit. When the temperature returns to be normal, the piston moves leftwards, the temperature sensing block drives the movable plate to move leftwards through the connecting rod, the movable plate drives thebump to move downwards, the fuse resets, and the circuit forms closed circuit.
Owner:彭博
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