52results about How to "Realize online switching" patented technology

The invention provides a hot acid pickling production process of stainless steel. The hot acid pickling production process comprises the following steps of (1) uncoiling, wherein uncoilers are adoptedfor uncoiling a steel coil raw material; (2) cutting, wherein hydraulic scissors are adopted for shearing off unqualified steel strips; (3) welding, wherein a laser welding machine is adopted for welding the heads and the tails of steel strips obtained through shearing; (4) rolling, wherein the steel strips enter three rolling machines to be continuously rolled; (5) degreasing, wherein degreasingequipment is adopted for removing surface rolling oil and oxidized scales for the rolled steel strips; (6) annealing, wherein the steel strips enter an annealing furnace for annealing from a middle loop; (7), scale removal, wherein a scale breaker is adopted for carrying out scale removal on the annealed steel strips; (8) grinding and cleaning, wherein grinding and cleaning equipment is adopted for grinding and cleaning the steel strips obtained after scale removal; (9) electrolysis, wherein the ground and cleaned steel strips enter an electrolytic area to be electrolyzed; (10) acid pickling,wherein the electrolyzed steel strips enter an acid pickling area for acid pickling; and (11) coiling, wherein the steel strips obtained after acid pickling are coiled through a coiling machine. According to the hot acid pickling production process, the acid amount is reduced, environment pollution is relieved, and the product surface is smooth and full of gloss.

The embodiment of the invention provides a master-slave cluster switching method and device, and relates to the technical field of computers. According to the embodiment of the invention, the method comprises the steps: creating data nodes, and writing the configuration information of a master cluster into a node value of a corresponding data node; modifying the node value of the data node into the configuration information of a slave cluster to be switched during the switching of the master-slave clusters; monitoring whether the node value of the data node changes or not: obtaining the configuration information of the slave cluster to be switched when the node value is monitored to change, and modifying the link, pointing to the cluster, of a client according to the obtained configurationinformation, thereby achieving the switching of the master-slave clusters. According to the embodiment of the invention, the configuration information is written into the node value of the data node.When the client monitors that the node value of the data node changes, the configuration information of the slave cluster is obtained after the node value is monitored to change, and the link from the client to the cluster is modified, thereby achieving the online switching of the master-slave clusters.

The invention relates to the technical field of unit heat supply, in particular to a direct high back pressure heat supply system of an indirect air cooling unit. The direct high back pressure heat supply system comprises a condenser and is characterized in that recycled water pipelines in the condenser are uniformly divided into two separate parts: on one side, a water inlet pipe communicates with a heat supply network water return pipe, and a water outlet pipe communicates with a heat supply network water heater by virtue of a heat supply network circulating pump; on the other side, the water inlet pipe communicates with an indirect cooling tower through a frequency conversion circulating water pump, and the water outlet pipe communicates with the water inlet pipe of the indirect cooling tower. The direct high back pressure heat supply system is small in investment and simple in structure, takes effect quickly, and can realize operation under pure condensing and back pressure modes; in addition, in case that the heat supply network is abnormal, the unit can switch over two operational modes without halt to ensure operating safety of the unit.

The invention discloses a special equipment antenna turntable dual-motor control system, which mainly includes a central processing unit, and a group consisting of a human-machine interaction interface, an optical fiber transmission unit, a first motor system, and a second motor system which are connected with the central processing unit. The first motor system and the second motor system are eachcomposed of an integrated servo motor, a reducer, an electromagnetic clutch, and a pinion which are successively connected. The two pinions rotate a turntable large gear and an antenna plate to change an antenna azimuth. A dual-motor control method of the system is also disclosed. The system uses a single central processing unit to control the dual motors. The two integrated servo motors operatealternately every 12 hours, thereby greatly prolonging the service lives of the integrated servo motors, reducing the maintenance frequency of workers, improving the reliability of the system, achieving the online switching of the motors, guaranteeing the 24-hours continuous operation of the special equipment antenna.

The invention relates to a device and a method for rapidly measuring the water content of nanoscale particles. The device comprises a clean humid air generation unit, a particulate matter humidity exchange unit, a nanoscale particulate matter number concentration spectrum distribution measurement unit and a dynamic PID humidity feedback adjustment unit. The clean humid air generating unit comprises an air source, a Nafion humidifying pipe, a Nafion drying pipe and a three-way electromagnetic valve. The nanoscale particle number concentration spectrum distribution measurement unit comprises a differential electromigration analyzer and a particle number concentration detector. The dynamic PID humidity feedback adjusting unit comprises a first humidity sensor, a second humidity sensor, a third humidity sensor, an ambient atmospheric humidity sensor, a two-way selector, a subtracter, an adder, a PID controller and a pulse width modulation driver. The invention can significantly improve theprecision and time resolution of particulate matter water content measurement, can be applied to online measurement and real-time inversion of ambient air nanoscale (3-100 nm) particulate matter water content, and the time resolution is superior to 10 minutes.

The present invention discloses a storage take-over and switching processing method and device. The method comprises: a storage gateway providing a storage resource logical unit number LUN for a client side; the storage gateway forwarding a received request instruction by which the client side obtains the attribute of the storage resource LUN to a storage device; the storage gateway forwarding the attribute of the storage resource LUN which is returned by a storage device according to the request instruction to the client side, wherein the attribute of the storage resource LUN is used for merging the storage resource LUN obtained from the storage gateway by the client side and another storage resource LUN obtained from the storage device into a multi-path storage resource LUN, to form two paths, and the operation is online switched to the path through which the access to the storage resource LUN of the storage device from the storage gateway is made. The problem that in the prior art the storage gateway comes online and supports the online switching of the client side and thus defects are caused is solved, and online switching of the client side can be realized.

The invention discloses a detection system and a detection method for the validity of an analog quantity output channel of a power plant. The system comprises a controller upper computer (1), a controller (2), an analog quantity output module (3), an analog quantity input module (4) and a power source (5), wherein the controller (2), the analog quantity output module (3) and the analog quantity input module (4) are respectively connected with the power source (5) by power lines; the controller upper computer (1) is connected with the controller (2) by a cable; the analog quantity output module(3) and the analog quantity input module (4) are respectively connected with the controller (2) by an RS-485 or RS-232 serial port; and the analog quantity output module (3) and the analog quantity input module (4) are connected by hard wiring. The system and the method realize notification of the real-time state of each analog quantity output channel to the controller and a DCS, so that troubleshooting time is shortened. In addition, the invention also gives consideration to channel redundancy, and online switching is realized in malfunction of channels.

The invention discloses a lime kiln and a control method thereof. The lime kiln comprises an online fuel switching system, and the online fuel switching system comprises a coal gas supply device, a pulverized coal supply device, N fuel switchers and N spray guns; when fuel of all the spray guns is switched from pulverized coal to coal gas, valve bodies at pulverized coal inlets in the fuel switchers and a pulverized coal stop valve are sequentially closed, and a pulverized coal conveying fan is adjusted to be in a standby state; the operation frequency of a coal gas conveying fan is improved,after the coal gas air pressure meets the kiln entering requirement, a coal gas stop valve and the valve bodies at coal gas inlets in the fuel switchers are sequentially opened, and coal gas sequentially passes through a coal gas conveying pipeline, a coal gas ring pipe, coal gas inlets and fuel outlets of the N fuel switchers and the N spray guns and flows into a kiln chamber; and a combustion-supporting air stop valve is opened, the operation frequency of a combustion-supporting fan is adjusted, the combustion-supporting air volume is matched with the coal gas volume, and the switching process is finished. According to the lime kiln and the control method thereof, the defects that lime kiln fuel is single in type and poor in production adaptability are overcome, and lime kiln coal gas/pulverized coal online switching is achieved.

The invention provides an integrated guide rail distribution switching power supply topology based on series compensation. The power supply topology comprises a transmitting power supply and n transmitting guide rail power supply sections; each section of the n transmitting guide rail power supply sections comprises n transmitting guide rail units connected in series and a group of switching tubes Spn+ and Spn- which are connected in series reversely; each transmitting guide rail unit is formed by connecting a transmitting coil Lpnm and a compensation capacitor Cpnm integrated in the transmitting coil Lpnm in series; a group of switch tubes Spn+ and Spn- which are reversely connected in series are connected in parallel to the corresponding power supply sections of the transmitting guide rails; the multiplexing emission guide rail power supply section compensates for the adjacent power supply sections, and there is no need to configure a compensation inductor for each power supply section; and the multiplexing resonant capacitor compensates for the two power supply sections, and the number of capacitors is reduced. Due to high multiplexing of the system, the number of resonators is reduced, the size and cost of the system are reduced, loss is reduced, and the efficiency of the system is improved.

The invention relates to a rod punching and shearing die and relates to the field of mechanical punching and shearing. The rod punching and shearing die comprises a base, a material guiding mechanism and a material breaking mechanism. The material guiding mechanism comprises a material guiding sleeve installed on the base. The material guiding sleeve is internally provided with a material guiding hole allowing a rod to penetrate through. An inlet of the material guiding hole is in a flaring shape. The material breaking mechanism comprises a dynamic material breaking mechanism body and a static material breaking mechanism body. The dynamic material breaking mechanism body is installed on a punch and comprises an upper punching and shearing block and an upper pressing unit. The upper pressing unit comprises an upper pressing block. The static material breaking mechanism body comprises a lower punching and shearing block and a lower pressing unit. The lower punching and shearing block is rotationally connected to the base and is round. Punching and shearing grooves are circumferentially formed in the edge of the lower punching and shearing block. A rotating shaft is fixedly connected to the center of the lower punching and shearing block. A driven gear is coaxially connected to the rotating shaft. A rack is arranged on the driven gear in an engaged mode. An air cylinder is connected to the end of the rack. A lower pressing block is provided with a punching groove. By implementing the scheme, on-line switching of cutters and leveling of the rod sections in the prior art are achieved, and the problem that the cut positions of rods are deformed is solved.

The invention discloses a double flexible direct current unit power transmission system and a power transmission mode switching method thereof. The switching method comprises the following steps: determining a power transmission mode of the double flexible direct current unit power transmission system, and determining a to-be-switched flexible direct current unit according to the power transmission mode, wherein the power transmission mode comprises a distribution mode and a combined transmission mode; isolating the flexible direct current unit to be switched from an alternating current system correspondingly connected with the flexible direct current unit, and switching the control mode of the flexible direct current unit to be switched from a power control mode to a voltage frequency control mode; and switching the flexible direct current unit to be switched to a connecting line corresponding to another alternating current system by adopting a synchronous switching-on function. Compared with the prior art, the technical scheme provided by the invention can realize on-line switching of the power transmission mode of the double-flexible direct-current unit power transmission system, avoids locking operation on the flexible direct-current units, and is beneficial to reducing the switching complexity, so that the operation efficiency of an operator can be improved, and the operation burden of the operator is reduced.

The invention discloses a feedback system and a feedback method of an aluminum foil last-stage formation electrolysis power supply. The system comprises a cell end voltmeter, a cell end voltage electric quantity isolation sensor, a machine end voltmeter, a machine end voltage electric quantity isolation sensor, a relay, a circuit unit adjusting unit, a change-over switch SB, an electrolytic cell A and an electrolytic cell B, when in use, the cell end voltage is connected to the cell end voltmeter and the cell end electric quantity isolation sensor and then is connected with the relay, a high-voltage direct-current voltage signal of the cell end voltage is converted into a direct-current low-voltage signal of 0-10V through the cell end electric quantity isolation sensor, and the direct-current low-voltage signal is input into the circuit unit of the electrolytic power supply for processing; and then the voltage is transmitted to the adjusting unit for comparison processing, the feedback voltage value is compared with the given voltage of the electrolytic power supply, and the adjusting control system of the electrolytic power supply adjusts the magnitude of the pulse trigger signal of the electrolytic power supply according to the compared data, so that the voltage-stabilized or current-stabilized operation of the electrolytic power supply is realized.