5results about How to "Arc elimination" patented technology

The invention provides a direct-current single-lamp controller based on an OpenCPU architecture, and relates to the technical field of illumination control, and the controller comprises a power conversion module which is used for converting a first direct-current voltage inputted into a direct-current power supply system into a second direct-current voltage, and supplying power to the controller; the metering module is used for collecting a group of electrical parameters input into the direct current power supply system and transmitting the electrical parameters to the OpenCPU communication module so as to transmit the electrical parameters to the server, and the OpenCPU communication module is used for receiving a control instruction issued by the server; when the control instruction indicates that on-off control is carried out on the external lamp, the OpenCPU communication module controls the external lamp to execute on-off operation through the on-off control module; and when the control instruction indicates that the dimming control is carried out on the external lamp, the OpenCPU communication module carries out dimming on the external lamp through the dimming module. By implementing the technical scheme provided by the invention, the purposes of reducing the cost and being suitable for direct current power supply are achieved.

The invention relates to a low-voltage overhead line insulation line emergency access device, which comprises a wire clamp, a low-voltage arc extinguish chamber device, a secondary disconnection drainage line mechanism, a terminal interface and a drainage copper bar, and is characterized in that the wire clamp is connected to the upper end of the low-voltage arc extinguish chamber device and is used for clamping an overhead line; the secondary disconnection drainage circuit mechanism and the terminal interface are both installed on the drainage copper bar, the terminal interface is vertically upward, the secondary disconnection drainage circuit mechanism is provided with a liftable mobile terminal, and the mobile terminal is in contact with or separated from a contact finger of the low-voltage arc extinguish chamber device when moving up and down. And therefore, through-flow or disconnection of a drainage line can be realized. According to the invention, the design is reasonable, the low-voltage arc extinguish chamber device is added to ensure that electric arc can be eliminated when an access line is disconnected, and meanwhile, a secondary disconnection drainage line mechanism is added to ensure that the line is completely disconnected again to eliminate potential safety hazards; and meanwhile, the terminal interface is installed vertically upwards, so that the drainage wire can be quickly hooked, and the hooking access mode of the drainage wire is more convenient, quick and labor-saving.

The present application provides a DC single lamp controller based on the OpenCPU architecture, which relates to the field of lighting control technology, wherein the controller includes: a power conversion module for converting a first DC voltage of an input DC power supply system into a second DC voltage and supplying power to the controller; a metering module for collecting a set of electrical parameters of the input DC power supply system and transmitting them to the OpenCPU communication module, and then transmitting them to the server, and the OpenCPU communication module is used to receive control instructions issued by the server; when the control instruction indicates switching control of an external lamp, the OpenCPU communication module controls the external lamp to perform switching operations through the switch control module; when the control instruction indicates dimming control of an external lamp, the OpenCPU communication module dims the external lamp through the dimming module. Implementing the technical solution provided by the present application achieves the purpose of reducing costs and being suitable for DC power supply.

The utility model relates to electric automobile access stake circuit safety technical field especially, and more particularly to a kind of electric automobile access stake power grid short-circuit protection device.The utility model provides a kind of electric automobile access stake power grid short-circuit protection device, which can eliminate the electric arc generated inside the circuit protector when power off, and can also speed up the heat dissipation efficiency inside the circuit protector.A kind of electric automobile access stake power grid short-circuit protection device, including circuit protector and installation frame etc., the right side of circuit protector is connected with installation frame.The utility model extrusion frame moves downward at the same time, extrusion sliding frame moves left, so that arc extinguishing grid moves left and enters inside circuit protector, the electric arc generated when power off is eliminated, and at the same time, the upper heat dissipation groove of circuit protector is opened, so that heat is dissipated outward, which achieves the effect of eliminating the electric arc generated inside the circuit protector when power off, and speeding up the heat dissipation efficiency inside the circuit protector.

The invention discloses a shield tunneling machine cutterhead driving system dynamic maintenance control system which comprises a circuit breaker, an isolation boosting transformer and an AC690V frequency converter which are sequentially connected with a power grid, and a programmable logic controller connected with the circuit breaker and electrically connected with an operation panel, an AC380V frequency converter, a contactor and the AC690V frequency converter. The AC690V frequency converter is used for being electrically connected with a cutterhead driving motor of the shield tunneling machine to be maintained; the AC380V frequency converter is used for being electrically connected with a gear oil pump of the shield tunneling machine to be maintained; the contactor is electrically connected with a brake hydraulic pump, the brake hydraulic pump is electrically connected with a brake control mechanism, and the brake control mechanism is used for being connected with a brake executing mechanism of the shield tunneling machine to be maintained. The dynamic maintenance method can dynamically maintain the cutter head driving system of the shield tunneling machine to be maintained, and has the advantages of being high in maintenance efficiency and low in energy consumption.