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59 results about "Re operations" patented technology

Method of asynchronously starting electrically-excited synchronous motor by frequency converter

The invention discloses a method of asynchronously starting an electrically-excited synchronous motor by a frequency converter. The method comprises steps: (1) a starting signal is sent; (2) rotation speed information is tracked and the frequency converter drives the motor to operate; (3) the actual motor operation rotation speed and the operation frequency are acquired, and whether the operation frequency at the time is larger than an exciting frequency point setting value is judged; (4) asynchronous operation to the exciting frequency point setting value is carried out; (5) stable operation is carried out to wait for exciting; (6) excitation is put in; (7) whether exciting succeeds or not is judged, in the case of success, a step (9) is executed, or otherwise, a step (8) is executed; (8) preparation is made for following re-operation of the frequency converter and the exciting of the motor; and (9) the motor enters a synchronous state, and at the time, the frequency converter drives the motor to synchronously operate to the frequency set by the frequency converter and stabilized to a set frequency, and other speed regulation instructions is waited. The method of the invention has the advantages that the principle is simple; synchronous starting can be quickly realized; and the controllability and the reliability are good.
Owner:ZHUZHOU NAT ENG RES CENT OF CONVERTERS

Process restoring method and device

The invention discloses a process restoring method and a device, wherein the method comprises the following steps: under the condition that a process of a first task is running, according to preset time parameters, taking an image file of the process as a second task corresponding to the first task and storing the image file into a designated memory, wherein the image file is used for restoring the process to a state occurring when the image file is stored; and under the condition that a first process is required to be restored, invoking the second task and running the image file so as to restore the process of the first task. By using the method and device disclosed by the invention, a process can continue to be executed from the state of the image file so as to complete the restoring of the process, therefore, the losses caused by the running collapse of users is obviously decreased, the risks of users are reduced, the problem for re-executing the process after the process fails is avoided, and an additional manual configuration required when the process is restored in different environments is also avoided; and a system is not required to carry out complicated loading, the cost of the system is reduced, the times for process re-operation and system configuration are saved, and the cost is saved.
Owner:SUGON INFORMATION IND

Rapid dehydration dryer

The invention discloses a rapid dehydration dryer and relates to an environmental protection device for carrying out dehydration or spin-drying on slurry or slag particles related to industry, daily life, agriculture and the like, most of the treatment technologies which are adopted currently adopt the dehydration or the spin-drying method which solely needs the pause for re-operation or the shoving compression roller way, but such treatment technologies have low efficiency, inconvenient treatment, poor effects, slow speed and the like. The scheme is as follows: materials pass through a screw conveyor, the screw conveyor is further connected with a rotary drum dehydration device through a joint sleeve and a hollow shaft, the hollow shaft is arranged at two ends of the dehydration rotary drum, a belt pulley and a belt are arranged at one end of the hollow shaft, the end of the hollow shaft is connected onto a power source, a heating element is placed on the wall of an inner housing of the dehydration rotary drum, the dehydration rotary drum is supported by support bearings at two ends of the hollow shaft, a hood shell is arranged on the surface of the dehydration rotary drum, a water outlet pipe port is designed at the bottom end of the hood shell, and the other end of the hollow shaft is connected with the joint sleeve and connected to a discharge port; and the rapid dehydration dryer can carry out full dehydration, simultaneously reasonably utilize heat energy, effectively save the time, and solve the problems of slow speed and the like caused by adopting the pause spin-drying or a shoving compression roller in the traditional technologies.
Owner:戴文育

Winter-heating water circulating pump energy-saving control method

The invention belongs to the field of electronics and control technology, specifically relates to a control method for saving energy in water circulating pump in winter. Its specific steps are that preinstall turning frequency, turning delay, the minimum and maximum limit of different temperatures pulse frequency. According to the range of temperature between outlet pipe and return pipe the energy-saving control cabinet adopts the PID algorithm to adjust pump operation frequency, when the pump operating frequency is lower than the turning frequency and the break over delay, and then pump operation frequency will be adjusted to the temperature maximum pulse frequency, and maintain a maximum delay time; pump operation frequency is higher than turning frequency and then adjusting by PID regulator; If the pump operating frequency below the turning frequency after adjustment, returning to the steps at the beginning of re-operation; if operation frequency higher than the break over frequency, entered the PID regulator. The invention adopts pulse working to prevent the water pump electricity motor works in the lower frequency limit for long hours, which cause the pipeline freezing and frost cracking because the end of pipeline can't bear under lower temperature long time and couldn't achieve consumer need. To the PWM technology application, the heating temperature is able to adjust heating temperature real-time in accordance with outdoor free air temperature.
Owner:上海联达节能科技股份有限公司

Control device and method for HSCB automatic re-operation under subway train VVVF fault work condition

The invention discloses a control device and a method for HSCB (high-speed circuit breaker) automatic re-operation under a subway train VVVF (variable voltage and variable frequency) fault work condition. The device comprises a drive control unit, an analog circuit processing unit of the drive control unit is used for converting a VVVF state signal into a voltage signal and real-timely outputting the voltage signal to a real-time fault protection programmable logic unit and a digital signal processing unit for use in real-time fault hardware protection and real-time voltage and current sampling, and the digital signal processing unit is connected with an embedded processing unit through a parallel data bus; the real-time fault protection programmable logic unit and a digital quantity input/output programmable logic control unit are connected with the embedded processing unit through the parallel data bus; the embedded processing unit is connected with a subway train network system through an MVB bus. The method is realized based on the device. The device and the method have the advantages of fast operating speed, precise sampling, precise control, and high automatization degree, and can reduce the operating strength of a driver and improve the operating reliability.
Owner:ZHUZHOU CSR TIMES ELECTRIC CO LTD

Degradable scaffold medical film preparation method

The present invention discloses a degradable scaffold medical film preparation method, wherein electrostatic spinning equipment is used and appropriate process parameters are selected to prepare and mold the medical film having a mesh scaffold structure. According to the present invention, polylactic acid is adopted as a raw material and is dissolved in one or two organic solvents selected from ethyl acetate, tetrahydrofuran, dimethylformamide, chloroform and the like according to different ratios to prepare a spinning solution, and an electrostatic spinning method is used to prepare the degradable scaffold medical film; the prepared product has characteristics of physical isolation property, flexibility, degradability and selective permeation property, wherein the film can be well attached on the wound surface tissue through the physical isolation property and the flexibility so as to provide the tissue adhesion prevention effect, the re-operation pain on the patient can be reduced through the degradability, the transmission functions of blood, nutrition substances and growth factors in vivo can be effectively promoted through the selective permeation property, and the wound surface tissue cell proliferation and the rapid wound surface healing are easily achieved through the scaffold structure; and the operation of the method is simple, the practicality is strong, the stability of the product is high, and the product has large application space in the medicine field.
Owner:WUHAN YIJIABAO BIOMATERIAL CO LTD

Auxiliary control device for compressor and auxiliary control method for compressor thereof

The present invention relates to an auxiliary control device for a compressor comprising: an inverter pack control unit (23) for stopping the operation of a compressor, selecting an operational condition such as a manual mode and an automatic mode or the like, and inputting a target input value; an operation control unit (12) for automatically detecting a load operation state or a no-load operation state of the compressor on the basis of a signal for an inputted current state when the compressor (8) is operated, preventing a high-speed idling operation when in the no-load operation state, performing a standby function for stopping a motor when the no-load operation continues for a predetermined time and a rapid re-operation prevention function, and separating a power source for driving the motor of the compressor and an operational power source from each other; and a pressure control unit (22) for comparing the target pressure value predetermined by a user with the pressure value which is detected from a receiver tank and outputted through a pressure sensor, and outputting the current according to a deviation value to the inverter, wherein the inverter (5) is configured to control the motor of the compressor in connection with a change in the current value outputted from the pressure control unit (22) according to the deviation of an internal pressure value of a receiver tank (20) for a target pressure value of the predetermined receiver tank (20).
Owner:金金均

Device for clamping tissue and application method thereof

PendingCN111110312AReduced operating requirementsConvenient, accurate and safe operationHeart valvesWound clampsRe operationsMitral valve leaflet
The invention belongs to the technical field of medical apparatus and instruments, and specifically relates to a device for clamping tissue and an application method thereof. The device includes a handle, an inner tube, an inner clamp, an outer tube seat, an outer tube, a casing pipe, an outer clamp and a releasing mechanism; the outer tube is connected to the casing pipe and the outer tube seat;the outer clamp is provided with an outer clamp seat and an outer clamping piece, and the clamping of the outer clamping piece is driven by the mouth of the casing pipe; the inner tube successively penetrates the outer tube seat, the outer tube, the casing pipe and the outer clamping piece and sleeved in the outer tube; the inner tube is connected to the inner clamp and the handle; the inner clampis provided with an inner clamp seat and an inner clamping piece; the inner clamp seat drives the outer clamp seat to move when contacting with the outer clamp seat, and a clamping tool is formed when the inner clamping piece contacts with the outer clamping piece; and the releasing mechanism sleeves the connecting part of the front end of the outer tube and the casing pipe and is used for locking or unlocking the connection of the outer tube and the casing pipe. The device and application method thereof can perform operation more conveniently, accurately and safely, so that requirements forthe operation of doctors can be reduced; and if the clamping positions of mitral valve leaflets are not good, repeated clamping can be performed, and then releasing can be operated.
Owner:KOKA NANTONG LIFESCIENCES CO LTD

Bioinformation analysis process management method and system

The invention discloses a bioinformation analysis process management method and a system. The method comprises the following steps of recording standard sample information; uploading a second-generation sequencing Fastq file which corresponds with the recorded standard sample information; configuring a bioinformation script for performing automatic analysis on the uploaded second-generation sequencing Fastq file; generating a matched auditing channel by analysis data and corresponding recorded standard sample information; deciphering the analysis data and generating a deciphering report in theauditing channel; auditing the deciphering report in the auditing channel for determining passing or rejecting, and generating a final report. The invention further provides a system which can realize the method. The method and the system can realize process management of bioinformation analysis, and the auditing channel has adaptive matching performance, thereby preventing mis-matching between an analysis result and the standard sample information. A bioinformation analysis Pipeline can be divided, and break point re-operation monitoring can be realized, thereby preventing a condition of error reporting and operation from beginning, and ensuring high analysis operation efficiency. A cloud server construction mode matches parallel execution operation of cloud nodes, thereby improving analysis efficiency.
Owner:SUZHOU SMK GENE TECH LTD

Connection structure of front panel and frontal frame of indoor unit of air -conditioner

The invention discloses a connection structure of a front panel and a frontal frame of an indoor unit of an air-conditioner. The connection structure comprises base seats and suction disks, wherein the base seats are fixedly arranged at two sides at the upper part of the inner side surface of the front panel of the indoor unit of the air-conditioner; the suction disks are connected to the base seats and used for being firmly absorbed on the frontal frame of the indoor unit of the air-conditioner when the front panel is closed; the suction disks are detachably connected to the base seats; a groove type slideway with narrow top and wide bottom is formed on each base seat; a bulge which corresponds to the slideway of each base seat and is slidably embedded into the slideway is formed at the bottom of each suction disk; each base seat is provided with a screw hole, and a bulge combined with the screw hole on each base seat is provided with external threads and is formed at the bottom of each suction disk. The connection structure is simplified, the die expense is reduced, the cost is reduced, the reject ratio in the production process is greatly reduced due to simplification of the structure, thereby lowering the cost of production re-operation; and when the suction disk goes wrong, a user can replace the suction disk at any time and the front panel can not be wasted, thereby reducing the cost of maintenance.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD

A method for asynchronously starting an electric excitation synchronous motor with a frequency converter

The invention discloses a method of asynchronously starting an electrically-excited synchronous motor by a frequency converter. The method comprises steps: (1) a starting signal is sent; (2) rotation speed information is tracked and the frequency converter drives the motor to operate; (3) the actual motor operation rotation speed and the operation frequency are acquired, and whether the operation frequency at the time is larger than an exciting frequency point setting value is judged; (4) asynchronous operation to the exciting frequency point setting value is carried out; (5) stable operation is carried out to wait for exciting; (6) excitation is put in; (7) whether exciting succeeds or not is judged, in the case of success, a step (9) is executed, or otherwise, a step (8) is executed; (8) preparation is made for following re-operation of the frequency converter and the exciting of the motor; and (9) the motor enters a synchronous state, and at the time, the frequency converter drives the motor to synchronously operate to the frequency set by the frequency converter and stabilized to a set frequency, and other speed regulation instructions is waited. The method of the invention has the advantages that the principle is simple; synchronous starting can be quickly realized; and the controllability and the reliability are good.
Owner:ZHUZHOU NAT ENG RES CENT OF CONVERTERS
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