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92results about How to "Resolve downtime" patented technology

Construction method of digging and conveying earth of deep foundation pit through current scour

The invention relates to the construction field of earthwork projects of sand soil or fine-grained soil foundation pits, in particular to a construction method of digging and conveying earth of a deep foundation pit through current scour. The construction method includes the step of supporting and portioning the foundation pit, the step of digging a mud sucking pool, the step of installing a mud pump, the step of installing a high-pressure water pump and a water supplying water tank, the step of digging a soil abandoning area, the step of installing a mud conveying pipe and middle pressurizing equipment and the step of digging soil through current scour, and finally the mud is conveyed to the soil abandoning area through the mud conveying pipe, the mud sediments in the soil abandoning area, and clean water after sedimentation is discharged or reused. The construction method of digging and conveying earth of the deep foundation pit through current scour has the advantages that (1) the scheme of digging and conveying soil through hydraulic power well resolves the problem of work stoppage caused by road traffic control; (2) soil is conveyed through a water current pipeline instead of a land route, so that the influence on the city road traffic from large earthwork trucks is reduced; (3) the construction scheme of digging and conveying soil through hydraulic power lowers construction noise; (4) no large earthwork truck passes near the foundation pit in the construction process, and loads on a surrounding and protective structure are reduced.
Owner:MINGYE CONSTR GRP

Induced draft fan RB control method of high-sodium lignite tower boiler unit

The invention discloses an induced draft fan RB control method of a high-sodium lignite tower boiler unit. After induced draft fan RB happens, a DCS is controlled in following manners that a) a unit control manner is switched to a TF manner, wherein master control of a boiler is switched into a manual manner; b) a main steam pressure set value firstly tracks actual main steam pressure, and then the RB sliding and pressing rate is changed into a target pressure value; c) air feeders on the same side are tripped, and the adjustable vane opening degrees of induced draft fans and air feeders which are not tripped on the opposite side are each increased at a certain rate on the basis of an original opening degree till a target value is achieved; d) upper layer coal mills are sequentially tripped, and finally four coal mills are reserved to operate; and a lower layer plasma burner is started to operate, and an upper layer plasma burner is started to operate after time is delayed by t2; and e) when a load reaches a target load, induced draft fan RB control automatically ends, or after unit main parameters are stable, an operating person manually confirms that induced draft fan RB control ends. The induced draft fan RB control method can improve RB control stability and safety.
Owner:STATE GRID CORP OF CHINA +2

Method for load control of steam turbine in frequency-variable rotating speed reducing process of SHRT (sinter blower residual heat recovery turbine) set

The invention discloses a method for load control of a steam turbine in a frequency-variable rotating speed reducing process of an SHRT (sinter blower residual heat recovery turbine) set. The method includes: step 1, starting the steam turbine, and detecting regulating steam port openness when the steam turbine is in a maximum non-load speed; step 2, performing rotating speed reducing control of the set, to be more specific, 1) when rotating speed reducing operation of the set is needed, setting VFDS frequency or rotating speed by operating personnel; sending a 'preparing for rotating speed reduction' signal to an instrument control system by VFDS, judging whether the set meets speed regulating conditions or not by the instrument control system, and if yes, feeding a 'permission of rotating speed reduction' signal to VFDS7, and executing the step 2); 2) reducing the rotating speed of a motor to a target rotating speed S1 under the control of VFDS, and in a rotating speed reducing process, reducing output power of the steam turbine to guarantee that current of the motor is constantly set current II. The method is free of human intervention, and the problem of frequency converter failure shutdown caused by current fluctuation of the motor in the rotating speed reducing process is effectively solved; in addition, enormous economic benefits can be created for enterprises by the SHRT set.
Owner:XIAN SHAANGU POWER

Data caching method and device, and computer equipment

The invention relates to the technical field of cloud storage, in particular to a data caching method and device, and computer equipment. The data caching method and device are characterized in that the first thread and the second thread concurrently request to acquire the same service data; if the cache fragment set is not searched for the service data, the step 2 is executed; if so, the first thread and the second thread compete for a lock and obtain the lock from the service data of the rear end; if the first thread competes successful, the service data of the rear end is locked, and only the first thread is allowed to obtain the service data; the service data is obtained in the first thread, and the corresponding first target service data and the first timestamp are written into the corresponding first cache fragment; and then, the service data of the rear end is unlocked; and the second thread obtains the first target service data from the first cache fragment, and then writes thecorresponding second target service data and the second timestamp into the corresponding second cache fragment, so as to solve the problem that the storage efficiency is reduced due to too many linksof the server and too many occupied resources, thus causing the server to be crashed.
Owner:PING AN TECH (SHENZHEN) CO LTD

Limestone-wet flue gas desulfurization defoaming method for thermal power plant based on desulfurization defoaming agent

The invention belongs to the technical field of flue gas desulfurization, and discloses a limestone-wet flue gas desulfurization defoaming method for a thermal power plant based on a desulfurization defoaming agent. The method comprises the following steps: recording FGD related operation parameters under the working condition of relatively stable operation load, and starting the addition work ofa special defoaming agent for experimental desulfurization after 4 hours; under the conditions that the desulfurization rate is qualified and the PH value is 5.0-5.6, the running number of the slurrycirculating pumps is kept; determining the feeding amount of the defoaming agent according to the operation conditions such as the inlet flue gas amount, the flue gas dust content, the boiler oil feeding amount, the inlet SO2 concentration and the like of the desulfurization system; and adding 0.5-3kg of the special defoaming agent for desulfurization into the pit, stirring for 5-10 minutes, and pumping into an absorption tower through an absorption tower pit pump. The defoaming agent is mainly applied to defoaming of limestone slurry in limestone-wet flue gas desulfurization absorption towersof thermal power plants, municipal coal-fired heat supply units, steel mills and coking plants.
Owner:陕西页川电力科技有限公司

Blast furnace blower temperature monitoring method and system

The embodiment of the invention discloses a blast furnace blower temperature monitoring method and system and relates to the technical field of monitoring. The blast furnace blower temperature monitoring method comprises the steps that the current temperature of a temperature detecting point is periodically collected through a temperature collecting module and is compared with a preset alarming temperature, and the temperature monitoring result of the temperature detecting point is generated; and the temperature difference absolute value is calculated through the current temperature of the temperature detecting point and the historical temperature of the temperature detecting point and is compared with a preset jumping alarming temperature, and the temperature jumping monitoring result of the temperature detecting point is generated. The condition that the temperature of the temperature detecting point is jumped due to self breakdown of the temperature collecting module is eliminated, the problem that a blast furnace blower stops due to non-self breakdown of the blast furnace blower is solved, and meanwhile, the condition that maintenance personnel of the temperature collecting module confirm the breakdown condition and overhaul the device is facilitated.
Owner:SICHUAN DAZHOU IRON & STEEL GROUP

Single-fan virtual wind speed calculation method and system based on wind field wind speed association

The invention discloses a single-fan virtual wind speed calculation method and system based on wind field wind speed association. The single-fan virtual wind speed calculation method at least comprises the steps of S1, carrying out data acquisition and storage, S2, carrying out data preprocessing, S3, carrying out associated fan selection, and S4, carrying out model training and storage: selecting associated historical data of an associated fan as an input value, inputting the input value into a learning model, and completing training of a wind speed fitting algorithm model; and S5, carrying out virtual wind speed calculation, calling the wind speed fitting algorithm model obtained through training in the step S4 in real time, and obtaining the current wind speed of a target wind turbine through fitting in combination with associated wind turbine associated data. According to the method, under the condition that an anemograph breaks down, auxiliary equipment does not need to be added, and the operation condition of the anemograph can be effectively judged and fitted. The method has the characteristics of simplicity and feasibility, can improve the phenomena of unit abnormity, unplanned shutdown and the like caused by anemograph faults, and improves the power generation efficiency of a unit.
Owner:东方电气风电股份有限公司

Dynamic detector for jacquard loom component

A dynamic detector for a jacquard loom component is mainly composed of a frame, a transmission mechanism a control mechanism and a detection mechanism. The frame comprises a bottom frame and a top frame, wherein a component fixing frame used for containing the component is fixed to the top frame. The transmission mechanism is mainly composed of a motor, a belt wheel set and a transmission wheel set, the two ends of a transmission wheel shaft of transmission wheels are respectively provided with an eccentric wheel, a connecting rod is connected to the outer side of each eccentric wheel, the connecting rods penetrate through the bottom frame and are fixed to the top frame, and two griffes are connected between the middle upper portions of the two connecting rods. The control mechanism comprises a control box, a plurality of circuit boards are connected to the control box, and a sensor is arranged on a stand column. The dynamic detector for the jacquard loom component is simple in structure and convenient to operate, detection efficiency is high, detection accuracy is also quite high, the running efficiency and the production quality of a jacquard loom can be ensured effectively, the problems of halt and detective cloth production due to the using of unqualified components are solved, and the labor intensity of operating personnel of the jacquard loom is reduced greatly.
Owner:王荣春

Task scheduling method and device, computer equipment and storage medium

The invention relates to a task scheduling method and device, computer equipment and a storage medium. The method comprises the steps of receiving a to-be-scheduled task scheduling request, wherein the to-be-scheduled task scheduling request carries a to-be-scheduled task identifier; obtaining a to-be-scheduled task corresponding to the to-be-scheduled task identifier; wherein the to-be-scheduledtasks comprise one or more single-chip task; wherein the task types corresponding to all the single-chip tasks are the same, and the processing performance indexes corresponding to all the execution machines are calculated; determining a grouping proportion according to each processing performance index, and grouping the tasks to be scheduled according to the grouping proportion to obtain a plurality of grouped tasks; and according to the processing performance index corresponding to each single-chip task in each execution machine, allocating each grouping task to the corresponding execution machine so as to instruct the execution machine to process the grouping tasks allocated in parallel according to each processing thread, wherein the corresponding number of processing threads are determined according to the allocated grouping tasks. Through the method, the task execution efficiency can be improved.
Owner:太平金融科技服务(上海)有限公司
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