31results about How to "Avoid large-scale remodeling" patented technology

The invention provides a dual-mode plasma arc device for rotating electrode atomization. The dual-mode plasma arc device comprises a high-frequency oscillator connected with a power supply, and the high-frequency oscillator is further connected with a truncated-cone-shaped cathode; a Laval type plasma gun nozzle is arranged outside the truncated-cone-shaped cathode, and the Laval type plasma gun nozzle is connected with a gas compressor and the power supply separately; and the power supply is further connected with a second electric brush and a first electric brush, the second electric brush and the first electric brush are located on the upper side and the lower side of the left end of an electrode bar, and the electrode bar is opposite to the left end of the truncated-cone-shaped cathode. A method for centrifugal atomization comprises the steps that (1), the electrode bar is installed, the power supply is switched off, and gas in an atomizing chamber is replaced with Ar gas; (2), the gas compressor is started, a variable resistor connected with the nozzle is set to be small, the high-frequency oscillator and the power supply are started, arcing is conducted between the nozzle and the cathode, and plasma flame gas is blown out after being compressed through the plasma gun nozzle; and (3), a plasma gun is integrally moved, and the end face of a bar materials starts to be melted under the thermal energy impact of a plasma flame. The dual-mode plasma arc device and method for rotating electrode atomization have the advantages that the structure is simple, the production efficiency is high, and the method is easy to operate.

The invention provides a high-sodium coal heating removing furnace and coal-fired power plant integrating device and a method thereof. The high-sodium coal heating removing furnace and coal-fired power plant integrating device comprises a high-sodium coal heating removing furnace system and a coal-fired power plant system. The high-sodium coal heating removing furnace system comprises a high-sodium coal heating removing furnace, a liquid-solid separator, a water-coal-slurry preparing unit, an alkali metal solution recycling treatment system, a pulverized coal drying device and a smoke spraying cooling and heat recycling device. The upper end of the high-sodium coal heating removing furnace is connected with the water-coal-slurry preparing unit, and the lower portion of the high-sodium coal heating removing furnace is connected with the liquid-solid separator. One end of the liquid-solid separator is connected with the pulverized coal drying device, and the other end of the liquid-solid separator is connected with the alkali metal solution recycling treatment system. The pulverized coal drying device is connected with the smoke spraying cooling and heat recycling device. The smoke spraying cooling and heat recycling device is connected with the alkali metal solution recycling treatment system. The alkali metal solution recycling treatment system is connected with the water-coal-slurry preparing unit. According to the key point of the problem needing to be solved, the characteristics that the integrated high-sodium coal heating removing device is abundant in inlet and outlet and independent are fully utilized, the high-sodium coal heating removing device is integrated with a steam water circulation system and a fuel system in a fire coal technology system and smoke waste heat utilization, and the purposes of energy saving and environment friendliness are achieved.

The invention provides a power distribution network integrated protection method suitable for access of distributed power supplies. The method includes the following steps that a power distribution network current protection constant value with the access of the inverter-type distributed power supplies reckoned in and a power distribution network current protection constant value with the access of the inverter-type distributed power supplies not reckoned in are calculated respectively; the two calculated distribution network current protection constant values are loaded into a local protector, and whether the two calculated distribution network current protection constant values meet detection limits or not is judged. According to the method, influence of the access of the photovoltaic distributed power supplies with different capacities on power distribution network current fault characteristics is taken into account; by adopting corresponding adaptive adjustment constant values based on local information in power distribution network current protection, faults can be quickly removed, influence of short circuit on a power distribution network is alleviated, large-scale reconstruction of the power distribution network is avoided, and good current protection performance can be achieved without communication or non-real time communication; the method is strong in feasibility, reduces investment and has high practicability in engineering practice.

Disclosed is an electromagnetic relay, comprising: a stationary current-carrying plate fixedly arranged, wherein the stationary current-carrying plate is provided with a first end and a second end, and the first end of the stationary current-carrying plate is provided with a stationary contact; and a movable contact spring at least one end of which is movably arranged, the movable contact spring being provided with a movable contact, wherein at least one end of the movable contact spring on which the movable contact is arranged can be moved to enable the movable contact and the stationary contact to be arranged in a contacting manner or a separated manner. It is characterized in that a concentrating flux plate is arranged between the stationary current-carrying plate and the movable contact spring, the concentrating flux plate is arranged on the stationary current-carrying plate, on the movable contact spring, or between the stationary current-carrying plate and the movable contact spring and in the position which is not in contact with the stationary current-carrying plate and the movable contact spring. When the movable contact is in contact with the stationary contact to switch on a current, the concentrating flux plate can reduce the ampere force between the stationary current-carrying plate and the movable contact spring. The present invention can reduce the influence of ampere force, and maintain the security of an electromagnetic relay and a switch device.

The invention discloses an automobile cooling fluid temperature detection method which comprises the following steps: judging whether an automobile engine is started according to an engine speed; if the automobile engine is not started, taking the current temperature outside an automobile as temperature of automobile cooling fluid; if the automobile engine is started, detecting a starting mode of the automobile; if the current starting mode of the automobile is cold starting, calculating the start time from ignition of the engine, calculating an average engine speed, and calculating the temperature of the automobile cooling fluid according to the average engine speed and the current temperature outside the automobile; and if the current starting mode of the automobile is hot starting, detecting flame-out time of the engine, and calculating the temperature of the automobile cooling fluid according to the flame-out time and the current temperature outside the automobile. The invention further provides an automobile cooling fluid temperature detection device. By the implementation of the technical scheme provided by the invention, the current temperature of the cooling fluid of the automobile can be calculated through intelligent simulation so as to realize functional control over other vehicle-mounted devices; and complicated automobile modification is avoided, and the cost and the development time are reduced.

The invention discloses a video-on-demand network, which employs QAM equipment and HFC network between an IP-based backbone network and a set-top box (STB). The STB sends uplink data to the IP-based backbone network via an IP network channel, and the IP-based backbone network sends down-link data to the STB via a radio-frequency channel of the HFC network. The invention also discloses a video-on-demand method. With the inventive technical proposal, the HFC network based on radio frequency (RF) data transmission can transmit down-link data with large data volume via the radio frequency with relatively-larger bandwidth resource, to solve the congestion problem of the down-link data. Contrarily, the up-link data with smaller data volume are transmitted based on the IP protocol. The inventionavoids the large-scale reconstruction of the existing network, saves the cost, and can efficiently improve the use experience of the user.

The present disclosure provides a network system and a networking method for an intelligent mine. The network system includes: a main core switch, which is arranged in a ground data center; and a main optical cable, which includes a plurality of optical fibers, and the first ends of the plurality of optical fibers are connected to each other. the core switch; a plurality of information node groups located underground, each of the information node groups corresponding to a mid-section plane, each of the information node groups including a plurality of information nodes, and each of the information nodes including a plurality of switches, The plurality of information nodes form a plurality of ring networks, and each of the ring networks is respectively connected to the second ends of the two optical fibers through the two switches. The embodiments of the present disclosure can provide an economical, practical and easy-to-maintain network system suitable for the continuous mining process of intelligent mines according to different mine development systems, and reduce the network transformation cost caused by new networking requirements during the mine development process.