35results about How to "Reduce severe impact" patented technology

The invention provides a rapid double power supply switch device and a working method thereof, relates to a switch used for guaranteeing power supply continuity and the working method, and can effectively solve the problems of contact arcing, electrical energy loss and the like of a conventional switch. The device comprises a frequently-used power supply, a reserve power supply, a load, a circuit breaker I, a circuit breaker II as well as a switch unit I, a switch unit II, a data acquisition module and a total control module, wherein the structure of the switch unit I or the switch unit II comprises a full control type switching element insulated gate bipolar transistor I, a full control type switching element insulated gate bipolar transistor II, an uncontrollable semiconductor device diode I, an uncontrollable semiconductor device diode II, a buffer circuit I, a buffer circuit II, a drive circuit I and a drive circuit II. Serious affects of the problems such as temporary reduction of power supply voltage, short-term voltage interruption and the like on the load are reduced, and safe and stable operation of a power supply system is guaranteed. According to the rapid double power supply switch device and the working method thereof, power supply switch time reaches a millisecond level, seamless switching can be realized, both the rapidity and the transient characteristic are ideal, and strict requirements of a sensitive and critical load on the power supply reliability and electric energy quality are really met.

The invention discloses a cognitive radio fairness scheduling method and system; the cognitive radio fairness scheduling method comprises the following steps of: obtaining the times of collision occurring between each present non-authorized user and an authorized user; according to the collision times, adjusting the final priority of each non-authorized user; according to the final priority of each non-authorized user and state information of each channel, generating scheduling control information; and scheduling the each non-authorized user by using a scheduler according to the scheduling control information. According to the cognitive radio fairness scheduling method, the average collision times of the non-authorized users in the communication service process can be reduced, and the fairness among the non-authorized users is embodied, and thus the whole communication quality of the non-authorized users is improved.

The invention relates to a method for synthesizing 3-acetoxy-9 beta, 10 alpha-pregna-5, 7-diene-20-ketone. 3-acetoxy-pregna-5, 7-diene-20-ketone is used as a raw material to synthesize the 3-acetoxy-9 beta, 10 alpha-pregna-5, 7-diene-20-ketone. The method is characterized in that: the method adopts a two-step method of photocatalytic reaction; in the first step of the photocatalytic reaction, light waves with a wavelength of between 275 and 295 nm are selected; and in the second step of the photocatalytic reaction, light waves with a wavelength of between 300 and 313 nm are selected and added with photosensitizer anthracene. The method has the advantages of readily available raw materials, mild reaction condition, high yield, low cost, good product quality, etc.

The invention discloses a slope reinforcement and ecological protection system which comprises a support structure arranged on the slope top plane and a slope protecting structure arranged at a slope on the lower portion of the support structure. The support structure comprises miniature piles which are arranged in an arc-shaped mode and anti-slide piles arranged in two-side arc-shaped arch feet; the pile tops of the anti-slide piles and the pile tops of the miniature piles are all connected with a connecting beam; the slope protecting structure comprises a non-woven geotextile and a metal mesh which are paved on the slope in a stacked mode from bottom to top; plant-growing bags are bound on the metal mesh; anchor rods penetrate through the metal mesh and the non-woven geotextile to insert into the slope. According to the slope reinforcement and ecological protection system, the support structure maintains the stability of a landslide mass, the construction cost is low, construction is quick, the influence on the environment is little, and the slope protecting structure reduces the water and soil loss in engineering construction. The vegetation slope protecting technology and engineering protective measures are combined, the advantages of the vegetation slope protecting technology and the engineering protective measures are exerted, the contradiction between slope engineering protection and ecological environment damage can be effectively solved, and harmonious coexistence between human activities and natural environments is achieved.

A heat pump water heater with a heat utilization balance processor and a heat utilization balance processor thereof relate to a fluid heater using a heat pump and an accessory thereof, the heat pump water heater comprises the heat utilization balance processor; which comprises a housing, a heat exchange pipe, a main heat exchange cavity, a sub heat exchange cavity and a steam-liquid separator. The heat utilization balance exchange is carried out for a working substance through the sub heat exchange cavity of the heat utilization balance processor during a condensing process and an evaporation process, so as to carry out the heat comprehensive utilization, thus increasing condensing effect, decreasing high pressure and exhaust temperature, decreasing the power consumption of a compressor, and increasing the energy efficient of a unit.

A heat pump water heater with a heat utilization balance processor and a heat utilization balance processor thereof relate to a fluid heater using a heat pump and an accessory thereof, the heat pump water heater comprises the heat utilization balance processor; which comprises a housing, a heat exchange pipe, a main heat exchange cavity, a sub heat exchange cavity and a steam-liquid separator. The heat utilization balance exchange is carried out for a working substance through the sub heat exchange cavity of the heat utilization balance processor during a condensing process and an evaporation process, so as to carry out the heat comprehensive utilization, thus increasing condensing effect, decreasing high pressure and exhaust temperature, decreasing the power consumption of a compressor, and increasing the energy efficient of a unit.

The invention discloses a multi-line parallel monitoring method based on internal and external network isolation, and the method comprises the steps: S101, constructing a multi-line parallel monitoring unit for the real-time monitoring of a network, and enabling the multi-line parallel monitoring unit to monitor the change of a network protocol IP address of a network interface, the real-time flowof a network card, and the state of a network icon; S102, if it is detected that a network protocol IP address is changed, or network card real-time flow fluctuation violates a preset flow model, ora network icon is changed, it is judged that network connection is changed; S103, if it is judged that the network connection is changed, executing a corresponding security operation. According to theinvention, a program means is utilized, and when network abnormity (such as network IP change, Internet access monitoring and the like) occurs in a private network or a local area network, disconnection or shutdown processing with time less than 500 milliseconds is executed immediately according to a set program. Therefore, the safety protection of the private network is realized, and the seriousinfluence caused by disordered network cable insertion, network error change and the like is reduced.

The invention discloses a method for cognitive radio fairness scheduling. The method includes the following steps: obtaining the number of collisions between current unauthorized users and authorized users; and adjusting the number of times of collisions between each unauthorized user final priority; generating scheduling control information according to the final priority of each unlicensed user and status information of each channel; the scheduler schedules each unlicensed user according to the scheduling control information. The invention can reduce the average number of collisions of unauthorized users in the communication service process, reflect the fairness among unauthorized users, and improve the overall communication quality of unauthorized users.

The invention discloses a cantilever beam slippage system for a self-elevating drilling platform. The cantilever beam slippage system comprises at least two hydraulic execution components distributed at the symmetric positions of the two sides of a cantilever beam, control valve sets matched with the hydraulic execution components and connected with the corresponding hydraulic execution components, a hydraulic pipeline assembly connected with the hydraulic execution components and the control valve sets, a power unit, a valve, an instrument and an oil source, wherein the power unit, the valve, the instrument and the oil source are installed in the hydraulic pipeline assembly and used for controlling and achieving work of the hydraulic execution components. The power unit comprises at least two double pump sets, and the double pump sets are backups for each other. According to the cantilever beam slippage system, eccentric loading of the execution components on the two sides of the cantilever beam does not occur, the cantilever beam moves, returns and slips smoothly, the phenomenon that the cantilever beam is twisted and getting stuck due to eccentric loading and can not be compensated does not occur, and the double pump sets can be started to drive the cantilever beam to slip and be started under the condition of the maximum starting static friction force .

The utility model discloses a recovery device for crude titanium tetrachloride. The device mainly comprises a titanium tetrachloride storage tank, a titanium tetrachloride intermediate tank, a pump, ahorizontal centrifuge and a solid collection tank, wherein the titanium tetrachloride storage tank is connected with the titanium tetrachloride intermediate tank through a pipeline, the pump is arranged on the pipeline, the titanium tetrachloride intermediate tank is connected with the horizontal centrifuge through a liquid outlet pipe, a feeding pipe is arranged on the horizontal centrifuge, andthe horizontal centrifuge is connected with the solid collecting tank through a solid outlet pipe. When the chlorination furnace is used for producing crude titanium tetrachloride through chlorination, crude titanium tetrachloride containing solid particles enters a horizontal centrifuge from a feeding pipe, then under the separation effect of a horizontal centrifuge, the titanium tetrachloride liquid enters and exits the titanium tetrachloride intermediate tank from the liquid outlet pipe, so that titanium tetrachloride in the intermediate tank is conveyed into the titanium tetrachloride storage tank through the pump; meanwhile, separated solid particle impurities enter the solid collection tank, the effect of effectively separating titanium tetrachloride from the solid particle impurities is achieved, and crude titanium tetrachloride is recycled.

The invention relates to a mobile combination device for quick formation of a storage battery. The mobile combination device comprises an unpowered roller conveyor line, a tray for putting a plurality of storage batteries, a water bath, a high altitude railway and an electric hanger, wherein the water bath is arranged along the unpowered roller conveyor line; the high altitude railway is erected above the water bath; the high altitude railway also extends to the part above the unpowered roller conveyor line; the tray enters into the water bath along the high altitude railway under the driving of the electric hanger; when the tray is put in the water bath, an anode connection point and a cathode connection point of the tray are respectively connected with an anode bayonet and a cathode bayonet of a power supply of the water bath. By adopting the structure, the battery after being added with acid can timely enter into the water bath state to reduce temperature and charge, and can be quickly moved after charging, so that the serious effect caused by temperature rise to the battery is greatly reduced, the service life of the battery is prolonged, the operation efficiency of an battery deformation process is obviously improved, and the production and processing cost is reduced.

The invention discloses a traffic structure spanning an urban rail transit construction area. The traffic structure is characterized in that abutments are arranged on the two sides of a traffic construction isolation area, pier columns are arranged on the abutments respectively, a bridge arch located above the traffic construction isolation area is erected with the abutments on the two sides of the traffic construction isolation area as supports, a passage road is arranged through the abutments, the pier columns and the bridge arch, and thus the detachable traffic structure spanning the traffic construction isolation area in the air is formed. On the one hand, the traffic structure can be used as a temporary road to guarantee passage; on the other hand, due to the modular structure, the traffic structure can be fast assembled and utilized repeatedly and is convenient to detach, and thus the time limit requirement of engineering construction is guaranteed and resources are saved to the maximum degree.

The invention discloses a full-automatic self-discharging conveying and screening silt removing machine for sugarcane. The full-automatic self-discharging conveying and screening silt removing machine comprises a self-discharging platform, a chain plate conveyor, a one-level roller type silt removing machine and a two-level grid silt removing machine which are connected in sequence. The included angle smaller than 180 degrees is formed between the self-discharging platform and the chain plate conveyor. The included angle smaller than 180 degrees is formed between the one-level roller type silt removing machine and the two-level grid silt removing machine. Beaters are arranged at the tail end of the chain plate conveyor and the front end of the one-level roller type silt removing machine respectively. Silt collecting hoppers are arranged at the bottom of the one-level roller type silt removing machine and the bottom of the two-level grid silt removing machine respectively. Branch belt conveyors are arranged at the outlets of the silt collecting hoppers respectively. Output ports of the branch belt conveyors are connected with a conveying belt of a main belt conveyor. An output port of the main belt conveyor is connected with a conveying belt of a bucket type belt conveyor. By means of the silt removing machine, silt of the sugarcane harvested through manual operation and a combine sugarcane harvester can be automatically removed, the silt removing rate exceeds 80%, mechanical automatic running operation is achieved, and the work efficiency is improved.

The invention belongs to the technical field of kitchen household appliances, in particular to a household induction cooker, which includes a main body of the induction cooker, a filter box and a corrugated regulating tube; a filter box is slidably connected to the main body of the induction cooker; a first The wave panel and the second wave panel; both sides of the main body of the induction cooker are fixedly connected with a corrugated regulating tube; the top of the corrugated regulating tube is fixedly connected with an air intake pipe head; leaf. The invention can realize the filtration and collection of oil and gas particles in the oil fume, and finally discharge the clean gas, which facilitates the needs of the people who have no oil fume to deal with the oil fume, improves the user's use environment, and reduces the serious harm caused by the oil fume to the user's health. influences.