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41results about How to "Avoid the risk of downtime" patented technology

API gray release method and device based on cloud gateway and computer equipment

The invention discloses an API gray release method and device based on a cloud gateway, computer equipment and a storage medium, and relates to the cloud transmission technology, and the method comprises the steps: obtaining configuration routing information transmitted by a gateway background management server, and obtaining formal version service parameters and gray version service parameters through analysis; creating at least two virtual routes according to the formal version service parameters and the gray version service parameters; if the cumulative time corresponding to the interface service exceeds a preset service time threshold, receiving user feedback information sent by the client; and if the user feedback information meets the gray scale service adjustment condition, switching the gray scale virtual routing to the formal virtual routing. According to the method, the request can be processed through the gray scale strategy, dynamic routing is carried out through the gray scale strategy when the gray scale strategy is hit, dynamic routing can be controlled in a flow mode for the request which does not pass through the gray scale strategy, and the compatibility risk of new and old versions and the downtime risk in the system upgrading process are avoided.
Owner:ONE CONNECT SMART TECH CO LTD SHENZHEN

Settlement-resistant supporting structure of loess tunnel and construction method thereof

The invention discloses a settlement-resistant supporting structure of a loess tunnel and a construction method thereof. The settlement-resistant supporting structure of the loess tunnel is characterized in that main tunnel arch frames are connected through longitudinal rods, wherein foot locking anchor pipes are arranged at connecting points between the longitudinal rods and the main tunnel arch frames and are positioned at the bottom parts of the longitudinal rods; sectional steel supporting legs are correspondingly arranged at the outer sides of arch feet at two sides of the main tunnel arch frames; the sectional steel supporting legs and the arch feet of the main tunnel arch frames form inverted Y-shaped supports; supporting cushion steel plates are arranged at the bottom parts of the sectional steel supporting legs and the main tunnel arch frames. According to the settlement-resistant supporting structure of the loess tunnel, the arch feet are enlarged to bear the pressure of surrounding rock together with initial ejected supporting concrete, so as to achieve co-stressing of multi-truss arch frames; the rod system type stressing is replaced by board system type stressing; the prior control measure is particularly suitable for IV-level gravity damping collapse Q3 sandy loess accompanying with geological conditions like shallow burying, bias pressure, high moisture content and low bearing capacity.
Owner:CHINA TIESIJU CIVIL ENG GROUP

Optical storage off-network system control method and device, controller and storage medium

PendingCN112952910ATo achieve the purpose of automatic operationTo realize the purpose of automatic operationPV power plantsSingle network parallel feeding arrangementsControl theoryMicro grid
The invention provides an optical storage off-grid system control method and device, a controller and a storage medium, and belongs to the technical field of off-grid micro-grid control. The method comprises the steps that: a controller determines whether an optical storage off-grid system enters a low-capacity operation stage or not according to the charge state of an energy storage battery; if the optical storage off-grid system enters the low-capacity operation stage, the controller determines whether a DC-to-DC converter and a photovoltaic cell panel in the optical storage off-grid system need to be shut down or not according to the power of an electric meter at an energy storage contactor; and if the DC-to-DC converter and the photovoltaic cell panel in the optical storage off-grid system need to be shut down, the controller controls the DC-to-DC converter and the photovoltaic cell panel to be shut down. According to the optical storage off-network system control method and device, the controller and the storage medium provided by the technical schemes of the invention, the optical storage off-grid system can still realize automatic operation under the condition that the energy storage battery is in low-capacity standby power, the risk of emptying the energy storage battery is reduced, the risk of downtime of the optical storage off-grid system is avoided, and the operation reliability of the optical storage off-grid system is improved.
Owner:XIAN LINCHR NEW ENERGY TECH CO LTD +1

Numerically controlled welding method with automatic compensation and filling of clearance

The invention discloses a numerically controlled welding method with automatic compensation and filling of clearance and relates to the technical field of numerically controlled welding. The numerically controlled welding method with automatic compensation and filling of clearance comprises the following steps that according to the groove form of a numerically controlled welded component, the fluctuation range delta W of the groove clearance numerical value is acquired through calculation, and the welding joint upper portion spacing W is determined; with the fluctuation range delta W of the groove clearance numerical value combined, the welding speed v1, the wire feeding speed v2, the swinging frequency f, and the functional relationship between arc length correction u and the welding joint upper portion spacing W are reached; and in the welding programming process, the relationship functional expression between the welding joint upper portion spacing W and each parameter is inserted,the welding joint upper portion spacing W is tracked in real time and fed back to the welding procedure, and automatic adjustment in the welding process is conducted. According to the numerically controlled welding method with automatic compensation and filling of clearance, different from a traditional circumstance that the fluctuation range delta W of the groove clearance numerical value is defined as a fixed value, when the welding joint upper portion spacing W is calculated, the fluctuation range delta W of the groove clearance numerical value is introduced; besides, the functional relationship expression between the welding joint upper portion spacing W and each parameter is inserted in welding programming; no manual operation is needed; and the method is simple, convenient and high in security.
Owner:成都长客新筑轨道交通装备有限公司

A wind power frequency regulation method and system considering multi-link coordinated control

The invention discloses a wind power frequency modulation method and system considering multi-link cooperative control, including: constructing a mapping equivalent model of the fan operating point and the frequency modulation control link parameters according to the net rotation energy storage power and load shedding reserve power of the fan, and at different wind speeds Under working conditions, adjust the wind turbine pitch angle load shedding and virtual inertia response parameters according to the mapping equivalent model; judge the current frequency modulation control link of the wind turbine according to the frequency deviation and frequency change rate of the wind turbine, and control the natural wind turbine according to the judgment result Adjust the control parameters of the fan to control the output torque of the fan. Using the correspondence between wind turbine rotor kinetic energy, pitch angle load shedding, virtual inertia and primary frequency modulation energy, a mapping equivalent model of wind turbine frequency modulation control parameters and operating points is proposed; based on fuzzy logic algorithm, a dynamic adjustment algorithm for wind turbine inherent control links is proposed. Realize the frequency modulation control strategy of the coordinated cooperation of the wind turbine operating point, the wind turbine inherent control and the parameters of the frequency modulation control link.
Owner:SHANDONG UNIV +1

Central controller protection method, device and system

The invention discloses a central controller protection method, device and system and belongs to the field of network security. The central controller protection method comprises the steps that data packets sent by a terminal are received and are matched with a flow table stored in an exit gateway; when the data packets are not matched with the stored flow table, count values for indicating the number of unmatched data packets are accumulated; when the time length required by the accumulated count values to reach an early warning threshold value is smaller than a predetermined time length threshold value, early warning information is sent to the central controller and is used for triggering the central controller to back up the information stored in the central controller into a redundant controller and processing the data packets reported by the central controller jointly with the redundant controller. The problem that illegal users can be prevented from exceeding their authorities to access information in an organization intranet but the central controller in the organization intranet cannot be prevented from being attacked in the related arts is solved, and the effect of avoiding the risk that the central controller is attacked and accordingly the central controller goes down is achieved.
Owner:BEIJING JIAOTONG UNIV

Water compensation type supercharged box-type non-negative pressure water supply device

The invention discloses a water compensation type supercharged box-type non-negative pressure water supply device, and relates to the technical field of municipal water supply. The water compensationtype supercharged box-type non-negative pressure water supply device includes a municipal water inlet manifold and a water outlet manifold, the water inlet end of the municipal water inlet manifold issequentially connected with a water inlet main valve, a Y-type filter, and a backflow preventer, the municipal water inlet manifold is divided into two paths, one path of the municipal water inlet manifold is sequentially connected to a solenoid ball cock, a water tank, the other path of the municipal water inlet manifold is connected to a municipal switching valve and is divided into three branches after passing through a section of a municipal water inlet manifold straight pipe. According to the supercharged box-type non-negative pressure water supply device, the method of canceling and replacing a small pump with a standby main pump for water compensation is adopted, the compensation capacity and compensation stability of a system are improved, and thus the device is more cost-effective, more energy-saving, more reliable, and more environmentally friendly.
Owner:南方智水科技有限公司

Steam turbine unit mounting technology

The invention discloses a steam turbine unit mounting technology, and belongs to the technical field of steam turbine mounting. The problems that in the prior art, the quality of a steam turbine unit mounting technology is difficult to control, and consequently frequent maintenance is caused is solved. The steam turbine unit mounting technology comprises the following steps of technological preparation, sizing block arrangement, front bearing seat mounting, lower cylinder mounting, partition plate mounting, rotor mounting, cylinder longitudinal and transverse horizontal correction, pre-buckling of a large cover on a steam turbine, generator bearing mounting, generator bearing seat mounting, generator rotor checking and hoisting, coaxiality aligning of the steam turbine and a generator, generator stator bedplate mounting, generator stator mounting, generator rotor penetrating, air gap and magnetic center adjusting, bearing bush gap and tightening force adjusting of a steam turbine and generator unit, buckling of the large cover on the steam turbine, secondary grouting of the unit, cleaning, checking and re-mounting of a speed regulating system, bearing box covering, turning gear mounting and adjusting and grouting. According to the technology, the quality of the technological process is strictly controlled, and the stability and safety of the technology are remarkably improved.
Owner:四川华川基业建设集团有限公司

Efficient waste heat recovery and denitration combined technology for gas turbine tail gas

The invention provides an efficient waste heat recovery and denitration combined technology for gas turbine tail gas. Flue gas discharged from a gas turbine enters a flue gas denitration system, is subjected to heat exchange with saturated steam from a high-pressure steam drum through a superheating segment of a high-pressure boiler, then is subjected to heat exchange with high-pressure boiler water from the high-pressure steam drum through an evaporation segment of the high-pressure boiler, then enters a denitration reaction bed layer through a fan to make contact with a catalyst for a denitration reaction, then is subjected to heat exchange with low-pressure boiler water from a low-pressure steam drum through an evaporation segment of a low-pressure boiler, and finally is subjected to heat exchange with the high-pressure boiler water at a coal-saving segment of the high-pressure boiler and then is discharged through a chimney. According to the efficient waste heat recovery and denitration combined technology, the high-pressure steam drum and the low-pressure steam drum are subjected to heat exchange with the flue gas to generate high-pressure steam and low-pressure steam, waste heat in the flue gas is recovered maximally, thus the comprehensive utilization rate of the gas turbine is increased and reaches 95% or above, the operation and investment costs are lowered, and the energy saving and environment friendly requirements are met.
Owner:ZHEJIANG SATELLITE ENERGY CO LTD

Stock garbage screening and reduction treatment system and method

The invention discloses a stock garbage screening and reduction treatment system and method. The stock garbage screening and reduction treatment system comprises a gas injection device, a gas extraction device, a methane concentration detection device, an airing system, a crushing device, a screening device, a sorting device, a winnowing device, a magnetic separation device and a leachate collecting device. The gas injection device injects inert gas into a stock garbage heap, meanwhile, the gas extraction device extracts landfill gas in the stock garbage heap, the concentration of methane in the stock garbage heap is reduced, and the excavation safety is improved. The airing system can reduce the water content of stock garbage, and the follow-up screening effect is improved. The treatment method comprises the steps that the stock garbage is aired before being screened, the water content of fed materials is controlled to be 30% or below, and the screening effect is remarkable; and the stock garbage is sequentially subjected to airing, crushing, screening, sorting, winnowing and magnetic separation, the treatment direction of screened products is reasonable, the project production halt risk caused by unsmooth discharging of the screened products is avoided, and meanwhile the problem of secondary pollution in the outward transportation process of the screened products can be avoided.
Owner:ARCHITECTURAL DESIGN RES INST OF GUANGDONG PROVINCE

Box body packaging and forming device

The invention discloses a box body packaging and forming device. An annular guide rail bulge and a supporting driving device are fixed to the top of a workbench, a center cylinder and a rotary table are arranged at the top of the supporting driving device, a cam is fixed to the bottom end of the center cylinder, an annular guide rail groove is formed in the side face of the center cylinder, eight bosses are evenly distributed on the periphery of the rotary table, a connecting rod pressing mechanism is arranged at the top of each workpiece base, a horizontal push block pressing mechanism is arranged on one side of each workpiece base, and a vertical push block pressing mechanism is arranged at the bottom of each boss. The workpieces are carried by the eight identical tools to rotate along with the rotary table by a circle, the workpieces are sequentially subjected to the eight procedures of outer side edge folding, pressure maintaining, lug folding, pressure maintaining, upper side edge folding, pressure maintaining, lower side edge folding and pressure maintaining, and therefore, a paper box is formed through one-time processing; and the whole device is flexible in driving mode and simple in structural principle and has the characteristics of being continuous in production process and high in production rate of an assembly line production mode, all the tools are independent of one another, and the machined workpieces do not interfere with one another.
Owner:武汉嘉艺和创技术有限公司

Server power supply life attenuation monitoring method and system, terminal and storage medium

The invention provides a server power supply service life attenuation monitoring method and system, a terminal and a storage medium, and the method comprises the steps: collecting the characteristic parameters of key devices of a server power supply through a sensor, and enabling the key devices to comprise a circuit board, a capacitor, a resonance circuit, a power factor correction circuit and a diode; comparing the characteristic parameter of each key device with a set standard parameter, and if the characteristic parameter is not matched with the set standard parameter, generating a primary alarm of the characteristic parameter; generating the score of each key device according to the primary alarm, and calculating the weighted sum of the scores of the key devices according to the set weight of each key device to obtain a total score; and if the total score is lower than a preset score threshold, sending power supply life alarm information to a substrate management controller. After the service life of the server power supply is attenuated to a certain degree, an alarm is sent to the substrate management controller, and the server power supply is maintained in time, so that the risk of server downtime is avoided.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD
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