36results about How to "Reduce Electrical Failures" patented technology

To simplify piping from a compressed air feed source to a main nozzle. The air feeder comprises a first opening and closing valve connected to the compressed air feed source, one or more first compressed air conditioners connected to the first opening and closing valve and setting the amount of flow or the pressure to a prescribed first set value, one or more second compressed air conditioners connected to the compressed air feed source and setting the amount of flow or the pressure to a second set value and having the number equivalent to or larger than the number of the first compressed air conditioners and one or more opening and closing second valves connected to each of the first and second compressed air conditioners and having the same number as the number of the first compressed air conditioners. Each second opening and closing valve is connected to a main nozzle and opening of the first opening and closing valve is carried out in a prescribed first period in weft insertion and opening of each second opening and closing valve is carried out in the first period and a second period different from the first one.

Disclosed is a novel deformation-resistant structure of a portable device, capable of reducing an electric failure by decreasing a distortion which occurs in a soldered portion between a printed circuit board of the portable device and an electric part mounted on the board due to a mechanical stress such as drop or pressure. Through slits are formed in positions in a printed wiring plate, which correspond to bosses having prepared holes disposed at the corners of a casing. By inserting screws into the prepared holes through the through slits, the printed circuit board is mounted in the casing. Although the casing is deformed when an external mechanical stress is applied to the casing, the screw and the boss can slide along each of the through slits. Thus, a deformation amount of the printed circuit board is not caused or becomes smaller than that of the casing.

The invention discloses a current collector for a manipulator, and belongs to the technical field of a feeding device of the manipulator. The current collector comprises a first bracket, a second bracket, a conducting strip fixing plate and a current collection device, wherein the first bracket and the second bracket are arranged on a cross arm of the manipulator; one end of the conducting strip fixing plate is fixed to the first bracket, and the other end of the conducting strip fixing plate is fixed to the second bracket; an upper roller groove, a lower roller groove and a group of conductive strip grooves are constructed on one side of the conductive strip fixing plate facing to the current collection device; the group of conductive strip grooves are spaced away from each other and are positioned between the upper roller groove and the lower roller groove; a conductive strip which is electrically connected with an external power supply is fixed in each conductive strip groove; all the upper roller groove, the lower roller groove and the group of conductive strip grooves run through from one end of the conductive strip fixing plate in the length direction to the other end; and the current collector is in sliding fit with the upper roller groove and the lower roller groove and is in sliding fit with the conductive strip grooves in a contact state with the conductive strips. The current collector has the advantages of capability of reducing the electrical failure, simple overall structure and capability of guaranteeing a clean effect of a set of manipulator.

The invention discloses a method for detecting hidden discharge current based on a voltage extreme value, comprising the steps of in real time monitoring information according to voltage waveform in an electric transmission line; determining amplitudes, phases, wave peak and wave valley time of the voltage waveform in the electric transmission line; acquiring lengths, waveform and triggering time of traveling wave signals by a traveling wave online monitoring device; selecting proper voltage extreme value neighborhoods; comparing the triggering time of each traveling signal in the electric transmission line with the extreme value time thereof according to the condition that the traveling wave triggering time becomes into hidden waveform; determining whether hidden discharge current presents at each extreme value position and in the entire voltage waveform section or not; if not, taking detected waveform current signals as clutter signals, and totally removing the interference waveform of non-hidden discharge current. By the method, the identifying efficiency of hidden discharge current can be greatly increased, hidden troubles of a power grid are reduced in removal and maintenance and the power grid is ensured to safely and steadily operate.

The invention relates to an insulator identification method in a distribution line based on statistical characteristics and machine learning. The method comprises the following steps of dividing aerial pictures acquired during distribution line patrolling into two groups according to an appropriate proportion and taking as a training set picture and a test set picture; carrying out YCbCr transformation; extracting the statistical characteristics on a Y channel, a Cb channel, and a Cr channel respectively, wherein the selected statistical characteristics are from a first moment to a six momentof an image and a standard deviation; carrying out normalization processing and arranging original data into [0,1]; making a label file according with a support vector machine SVM and taking as the training sample of a SVM classifier; training the SVM classifier, carrying out optimal characteristic selection, and selecting a data set having an identification advantage from 7 statistical characteristics; and inputting into the test set picture, and using a trained classifier to output a classification result.

The invention discloses an electromagnetic contactor. The electromagnetic contactor comprises a main contact electromagnetic mechanism and an auxiliary contact electromagnetic mechanism, wherein a first coil of the main contact electromagnetic mechanism and a second coil of the auxiliary contact electromagnetic mechanism are connected in parallel. The electromagnetic contactor independently acts on the auxiliary contact electromagnetic mechanism in an electromagnetic manner. After the control of the auxiliary contact electromagnetic mechanism of the contactor is further synchronously controlled by one set of independent electromagnetic mechanisms, the defect that the synchronous action of a main contact and an auxiliary contact of the contactor can only be realized in a mechanical connecting mode is overcome, electric failures caused by mechanical blockage, loosening, wear and other failures of the existing variety of contactor due to the complicated linkage mechanical mechanism are reduced, and safe running of electric equipment controlled by electric control elements is facilitated.

The invention relates to an electrical junction box, in particular to an electrical junction box capable of preventing condensate water. The problem that an existing electrical junction box is unreasonable in condensate water prevention structure is solved. The electrical junction box capable of preventing condensate water is composed of a box body with an opening in one side and a cover plate covering the opening of the box body in a sealed mode and fixed to the opening of the box body. The periphery and the bottom of the box body are of a hollow structure except for a perforated part for a cable to penetrate. The cover plate is of a hollow structure; and the hollow parts of the box body and the cover plate are filled with thermal insulation materials or vacuumized. Heat conduction insideand outside the electrical junction box is cut off through a hollow structure and filling of a thermal insulation material or vacuumizing, and the purpose of preventing condensate water from formingis achieved. According to the invention, the hollow or sandwich structure is ingeniously applied to the electrical junction box, and the design idea is novel, unique and reasonable. The electrical junction box is suitable for bullet trains or locomotives, and is also suitable for being used in other fields in environments with violent changes of high temperature, low temperature and humidity.

The invention discloses an integral fully-sealed prefabricated electrical circuit board and a manufacturing method thereof. The electrical circuit board comprises a substrate, a wire, a wire connecting piece and an insulating packaging material, wherein the front surface of the substrate is used for fixing an electrical device, the back surface opposite to the front surface is used for fixing andsupporting the wire, the wire is used for connecting the electrical device, the wire connecting piece is fixedly arranged on the substrate and is used for connecting the wire and an external wire harness, and the insulating packaging material covers the back surface of the substrate; and the manufacturing method is used for manufacturing the electrical circuit board. According to the electrical circuit board, the quality of electrical control equipment can be improved, the labor cost is reduced, the insulation protection performance, the fireproof performance, the dustproof performance, the waterproof performance and the explosion-proof performance of the electrical control equipment are greatly improved, and the electrical control equipment is attractive and elegant.

The invention discloses an intelligent safety bus monitoring system comprising a vehicle data server, a remote monitoring terminal and a plurality of vehicle detection terminals. The vehicle detection terminals are used for detecting environmental parameters in buses, the number personnel in buses, and equipment safety situations of the buses and sending the detected data information to the vehicle data server; the vehicle data server receives data information sent by the plurality of vehicle detection terminals; and the management staff obtains information in the vehicle data server by the remote monitoring terminal connected to the vehicle data server. The vehicle detection terminals consist of temperature and humidity detection modules, speed detection modules, positioning modules, electrical equipment detection modules, personnel number statistics modules, control modules and wireless communication modules. According to the invention, the system has functions of vehicle detection and monitoring and is capable of detecting safety of vehicles, so that the vehicle fault occurrence probability is reduced, and the personnel safety is improved; and the vehicle management efficiency by the management staff is increased.

The invention relates to the technical field of boiler dust cleaning equipment, and specifically relates to a cyclonic high sound intensity dust cleaning system. The cyclonic high sound intensity dust cleaning system comprises a central control module, an air bus bar, a dust cleaning control module, a cyclonic sound wave generating device and a loudspeaker. The cyclonic high sound intensity dust cleaning system is applicable to various waste heat boilers and utility boilers; compared with a siren sound wave dust cleaning system of the same scale, the system has the advantages that the production cost is only about 70% of the production cost of the existing siren sound wave dust cleaner and the fault rate is reduced by over 80%; and the system is convenient to install, simple and convenient to maintain and high in operating efficiency.

The invention relates to the technical field of furnace ash-cleaning equipment, and particularly relates to a cyclone acoustic wave generating device. The device includes a device body, a front cover, an air inlet, a rear cover, a rotor, a bearing, a rotating blade disk, an audio frequency orifice plate and an acoustic duct; the device body and the rear cover compose a main air chamber, the rotating blade disk is arranged in the main air chamber, the rotating blade disk is provided with gas ports, the blades on the rotating blade plate are in straight-line shape; the audio frequency orifice plate is arranged in the space formed by the device body and the front cover, and audio holes are arranged on the audio frequency orifice plate; the device body is provided with a sound guide laryngeal; the rotating blade plate and the audio frequency orifice plate are connected through the rotor and the bearing. Compared with same size spiral flute wave ash cleaner, the cost of production of the cyclone acoustic wave generating device is lower than 70% of the cost of production of the existing spiral flute wave ash cleaner, the failure rate decreases by more than 80%; the cyclone acoustic wave generating device has the advantages of easy installation, small maintenance, high adaptability and high operation efficiency.