112results about How to "Solve the loop problem" patented technology

The invention discloses a method for achieving two-way synchronous data circulation in a heterogeneous database synchronization system based on logs. The method comprises the steps that special tables are established in databases for two-way synchronization respectively; when incremental data are transmitted to a destination database from a source database, a piece of special table data is inserted in the destination database firstly, all the incremental data are executed in the destination database secondly, and incremental data events are submitted manually in the destination database finally; in the incremental data synchronization process, incremental data are obtained from the logs with the events as units, whether the events contain a piece of inserted data of the special table B of the database B is checked, and the incremental data are no longer synchronized to the database A if the inserted data exist and the source of the inserted data is the database A; otherwise, the incremental data are synchronized to the database A. According to the method, the properties of the databases are not affected, the atomicity of the events is utilized, and data circulation is achieved simply and conveniently.

The invention provides a rotary compressor, comprising a compression component and a motor component which are arranged in a shell, wherein the compression component is arranged at the lower part of the shell; the motor component is arranged at the upper part of the shell; the compression component comprises an air cylinder, a piston arranged in the air cylinder and a slip sheet; a long bearing and a short bearing which are used for supporting an eccentric crankshaft are arranged on the air cylinder; the short bearing is used for dividing the inner space of shell into a low-pressure cavity atthe upper part and a high-pressure cavity at the lower part; the short bearing is provided with an upper oil pool, and an oil storage cavity is arranged at the lower end of the short bearing; the oilstorage cavity is communicated with the lubricant channel of the eccentric crankshaft; one end of an oil conduit is communicated with the upper oil pool and the other end of the oil conduit is communicated with the oil storage cavity; an oil conducting cover is arranged at the lower end of the short bearing; and the oil conducting cover, the lower end of the short bearing and the eccentric crankshaft form an oil storage chamber. The rotary compressor is simple and reasonable in structure, flexible in operation, good in lubrication performance, good in oil-gas separation effect, low in oil seal amount and high in safety degree.

The invention discloses a method and a device for realizing a user access multi-homing network and network equipment, and solves the problem of dynamic routing loops generated when a user access network uses CE multi-homing networking. The method disclosed by the invention comprises that: a home location PE receives VPN routing information from other PE; if judging that the VPN routing information received from the other PE is required to be sent to homing CE, the home location PE reflects the VPN routing information to the other PE on the home location; and when receiving the VPN routing information from the homing CE, the home location PE judges whether the VPN routing information received from the homing CE is the same as the reflected VPN routing information, and if so, VPN routing entries are prohibited from being updated by the VPN routing information received from the homing CE. Because the home location PE filters routing which is received from the CE and possibly causes loops by utilizing the reflected VPN routing information, and the VPN routing information is not used to update the VPN routing entries, so the problem of the dynamic routing loops is solved.

The invention provides a method for comprehensively treating and utilizing dust sludge. The method comprises the following steps of: (1) dispensing: carrying out dispensing calculation according to main ingredients of various iron-containing dust sludge to ensure that the excess coefficient of the content of free carbon reaches 1.0-1.8; (2) mixing: uniformly mixing materials by using mixing equipment; (3) molding: pressing the mixed material into a dust sludge block mass with a granularity of 5-15mm by using molding equipment; (4) drying: drying the molded dust sludge block mass at a temperature below 300 DEG C; (5) charging: after steel-making molten iron in a molten iron pot is blended into a rotating furnace, putting the dust sludge block mass into the hollow molten iron pot through charging equipment according to a weight determined by calculation, preheating and partially reducing the dust sludge block mass by utilizing the molten iron pot and the heat of residual molten iron in the molten iron pot, and sufficiently reducing by utilizing the heat of a large quantity of molten iron and a scouring and stirring effect after the molten iron pot loses iron; and (6) desulfurizing: moving the steel-making molten iron pot which finishes receiving the molten iron and is filled with the dust sludge block mass to a desulfurizing position to desulfurize, wherein after desulfurizing, the molten iron pot can be normally used for steel-making. The method can be used for treating any dust sludge materials without separating the iron dust sludge, ensures that all the iron dust sludge is utilized, simplifies the dust sludge treatment facility, reduces the enterprise cost and has obvious economic benefit and environmental protection benefit.

The invention discloses a multicast data transmission method and multicast data transmission equipment. The method comprises that: network equipment determines the DF interfaces of the network equipment, and sets corresponding (*.G.V) table entries of the DF interfaces; and when receiving multicast data, and the network equipment forwards the multicast data through an outlet interface if a matched (*.G.V) table entry is found according to the inlet interface of the multicast data or discard the multicast data. In the invention, bidirectional protocol independent multicast (PIM) forwarding canbe realized, and the problem of loop of a multicast data stream is solved.

The method comprises: setting one of multi devices simultaneously located on the bridge between two RPRs (resilient packet ring) as an active device and other devices are set as standby devices; making interaction of device state control messages between active and standby devices to implement the redundancy protection of RPR bridge. By the invention, the switch speed from one failure cross-ring bridge device to other standby devices can be effectively improved.

The invention relates to a particle swarm optimization Steiner minimum tree construction method based on multi-stage transformation and genetic operation under an X structure, and provides an effective edge-edge-genetic operation method in order to solve two SMT problems at the same time. Point coding strategy. The invention provides a multi-stage conversion strategy which not only can enlarge thesearch space of an algorithm, but also can ensure effective convergence. By testing three schemes from two stages to four stages and different combinations of the schemes, an optimal combination is given. At the same time, the present invention constructs a discrete particle update operation for discrete VLSI wiring using a genetic operation in combination with union-lookup set segmentation. In addition, in order to introduce uncertainty and diversity, the invention provides a variation operation for improving an edge conversion strategy. According to the method, a wiring scheme with the bestquality can be obtained from a global angle.

The invention discloses a method for achieving defluorination and recycling of secondary aluminum ash with a series-parallel method. The method specifically includes the following steps that (1), theraw material secondary aluminum ash comprises high-fluorine secondary aluminum ash and low-fluorine secondary aluminum ash, and the low-fluorine secondary aluminum ash is treated with a Bayer process;(2), the high-fluorine secondary aluminum ash is treated with an alkali sintering method, volatile silicon fluoride gas is absorbed with alkali liquor, and sintered clinker is obtained; (3), the sintered clinker is immersed in water, a defluorination agent is added into leachate, the materials are stirred, the materials are filtered, purified liquor is obtained, and after leached residues are washed, common solid waste is obtained; and (4), a defluorinated solution is merged into the Bayer process flow for treating the low-fluorine secondary aluminum ash according to the causticity ratio. Thelow-fluorine secondary aluminum ash and the high-fluorine secondary aluminum ash are treated with the series-parallel method, on one hand, the aqueous leachate of the sintered clinker supplements losses of liquid alkali of the Bayer process flow, on the other hand, most of the harmful element fluorine in the raw material can be removed, and it is avoided that soluble fluorine enters a high-temperature high-pressure alkali dissolution system, so that reaction equipment is corroded.

The invention discloses a method for preparing ethylene glycol by an ethylene carbonate method. By using the method, the EO (ethylene oxide) conversion rate and the EC (ethyl cellulose) selectivity are greatly improved. The method mainly comprises the following steps of: removing the vast majority of non-condensable impurity gas contained in the mixed gas obtained by ethylene epoxidation in a washing tower, and introducing washing liquor into a desorber for desorbing, to obtain crude EO raw material gas; cooling and refining the crude EO raw material gas in a packed tower to obtain a high-concentration EO raw material; carrying out esterification on the high-concentration EO raw material liquid and CO2 to generate EC; and recovering a thick catalyst solution obtained by a tower kettle to an esterification work section to be recycled; carrying out a heterogeneous hydrolysis reaction on the EC product obtained by means of esterification and vacuum rectification and water which is approximate to a stoichiometric ratio in a hydrolysis reactor to obtain a target product EG (ethylene glycol), and separating out the byproduct CO2 and then circulating the byproduct CO2 to an esterification reactor to be reused; and refining the EG generated by the hydrolysis reaction in a refining tower to obtain the high-purity EG target product.

The invention belongs to the field of hirudo culture, and particularly relates to an upward flow circulating water culture system for hirudo. The upward flow circulating water culture system comprises a water platform and a culture zone. The water platform comprises a support, a buoyancy tank and pedals, the support is formed in a longitudinal and transverse crossing manner, the buoyancy tank is arranged at the bottom of the support, and the pedals are fixed to the upper surface of the support; the culture zone comprises a drainage channel, a flow pushing pump and a plurality of culture tanks, the culture tanks are arranged on the support, and the drainage channel is arranged among the culture tanks. The upward flow circulating water culture system is characterized in that an inflation hole is formed in the buoyancy tank, and an air release valve is arranged on the buoyancy tank; the culture tanks comprise tank side walls and metal netted tank bottoms; first through holes are formed in the upper portions of the tank side walls; second through holes which correspond to the first through holes are formed in the side walls of the drainage channel, and the first through holes are fixedly connected with the second through holes by water outlet pipes; a drainage pipe is arranged on the lower portion of a side wall of the drainage channel and is connected with the flow pushing pump by a tee joint. The upward flow circulating water culture system has the advantages that water flow in the culture tanks can be effectively circulated and can be in flow states constantly, and accordingly the oxygen content of water can be increased.

The invention discloses a method for controlling the temperature of a reduction rotary kiln by optimizing and adjusting the fuel amount and the air volume. An ultrasonic temperature and distance measurement analyzer is additionally arranged on a kiln head cover of a rotary kiln in order to monitor the temperature in the kiln length direction online in real time. a series of secondary air nozzles are installed on a kiln body in the kiln length direction, and the air volume of the secondary air nozzle at a corresponding point is changed according to the difference between the temperature of a measured point and a target temperature, or the amount of reductive fuel added from the kiln head and/or the kiln tail of the reduction rotary kiln is adjusted. The uniformity of a temperature field inthe kiln in the kiln length direction is ensured. The local temperature is prevented from being too high or too low, ring formation in the rotary kiln is avoided, a longer high-temperature zone is provided for reduced materials, and the product quality index is remarkably improved.

The invention discloses a method for controlling the temperature of a reduction rotary kiln by optimization and adjustment of the fuel amount. The method includes the following steps of: additionallyinstalling an ultrasonic temperature and distance measurement analyzer on a kiln head cover of the rotary kiln; simultaneously adding a reductive fuel through the kiln head and the kiln tail of the reduction rotary kiln; monitoring the temperature along a kiln length direction line on line in real time; adjusting the amount of added reductive fuel at the kiln head and/or the kiln tail of the reduction rotary kiln according to the difference between the temperature of a measured point and the target temperature to ensure that the uniformity of a temperature field in the kiln and in the kiln length direction is guaranteed, the local temperature is prevented from being too high or too low, and ring formation in the rotary kiln is avoided; a longer high-temperature zone is provided for reduction materials; and the product quality index is remarkably improved.

The invention relates to a method for preparing Mn(OH)2 by circularly using ammonia water, which comprises the following steps: making MnSO4 into a solution with the concentration of 100-450g/L, precisely filtering the solution, putting in a reaction vessel, adding ammonia water which is quantitatively prepared and has the concentration of 2-10mol/L while stirring at normal temperature, carrying out reaction, controlling pH of end point of the reaction to be 7-8, continuously stirring for 15-30 minutes, carrying out pressure filtration and separation to obtain a filtrate and Mn(OH)2 solid; reacting the filtrate in the step A with a Ba(OH)2 solution with the concentration of 0.5-3mol/L at the same molar weight in a closed container, turning on a heating device after the end point of the reaction is reached, raising temperature, stirring so that the solution is decomposed into ammonia gas, and finally absorbing by using deionized water to prepare the ammonia water.