38results about How to "Achieve circuit break" patented technology

The invention provides a circuit repairing method used for a printed circuit board, comprising the following steps: firstly detecting a circuit on the printed circuit board, marking a position of a defect on the circuit, comparing the defect with a circuit design drawing, and obtaining coordinate values of the defect; then detecting a shape of the defect, designing and carving a to-be-repaired region according to the shape of the defect, and carving and removing a copper foil in a copper-rich region by using a carving machine; and finally referring to the circuit design drawing, determining aglue extrusion path and a glue extrusion technology according to the position and shape of the to-be-repaired region, extruding slurry into the to-be-repaired region according to the glue extrusion path and the glue extrusion technology, and solidifying the slurry. The provided circuit repairing method used for the printed circuit board has the advantages that the position and shape of the defectare detected, the copper-rich region and a copper-deficient region are carved, a short circuit defect is eliminated, then the to-be-repaired region is filled by using the slurry, repairing on the defects such as circuit breakage and a pit is realized, and production yield of the printed circuit board is improved.

The invention relates to an open-circuit protection cable. The open-circuit protection cable comprises conductive wire tubes and a protection tube. The protection tube comprises an internal tube and an external tube which are coaxial. The two ends of each conductive wire tube are provided with a separating compression spring perpendicular to the conductive wire tube. The protection tube is also provided with a high pressure oil chamber which comprises a slide cylinder arranged between the internal tube and the external tube and also comprises a compression cylinder arranged in the internal tube. The other end of the slide cylinder is communicated with an air pressure chamber which is communicated with a pressure valve arranged on the external tube. The high pressure oil chamber and the air pressure chamber are separated by a sealed piston arranged in the slide cylinder. Conductive wire cores are tightly arranged in each conductive wire tube. Two wire ends stretching out of any adjacent conductive wire tubes are vertically laminated in parallel and electrically contacted. The compression cylinder compresses each wire end. According to the cable, the circuit can be disconnected when the circuit is abnormally and the circuit can be rapidly restored so that working stability of the cable can be effectively enhanced and cost can be saved.

The invention discloses a battery thermal protection mechanism for communication equipment, which comprises a casing, an upper cover and a battery core, the battery core is plugged into the casing and formed with two electrode seats, the upper end of the casing is fixedly connected with a casing, the casing There are two sockets formed on the shell, and two cooling holes formed at both ends. A sealing cover is inserted into the cooling hole. A connecting rod extending into the casing is formed at the lower end of the sealing cover. The lower end of the connecting rod is fixedly connected with a fusible block, the middle part of the fusible block is hollowed out to form a hollow part, the upper inner wall of the hollow part is fixedly connected with the first pressure spring; The two ends of the rod are respectively fixed on the two conductive columns, the middle lower end of the first horizontal bar is fixedly connected with the second pressure spring, and the upper end of the conductive column and the sealing cover are fixedly connected with the second horizontal bar. The invention automatically disconnects the connection circuit when the battery is overheated, and at the same time opens the cooling channel to cool the battery core and prevent the battery from exploding.

The invention discloses a battery overheating protection device, which comprises a rectangular shell, an upper cover and a battery core, the battery core is plugged into the shell and formed with two cylindrical electrode seats upward; the upper end of the shell is fixedly connected with a cover Shell, two sockets are formed in the middle of the upper surface of the casing, and two cooling holes are formed at both ends; a conductive column is inserted in the socket, the upper end of the conductive column is fixedly connected with the first crossbar, and the lower end of the middle part of the first crossbar A compression spring is fixedly connected; a sealing cover is plugged into the cooling hole, and the lower end of the sealing cover is formed with a connecting rod extending into the casing. The connecting rod is fixedly connected with a second cross bar, and the lower end of the connecting rod is connected with an overheating protection rod , The lower end of the overheating protection rod is formed with a laterally protruding clamping block, the clamping block is clamped on the overheating protection seat, and an expansion block is arranged in the overheating protection seat. The invention automatically disconnects the connection circuit when the battery is overheated, and at the same time opens the cooling channel to cool the battery core.

The invention relates to a water purifier protective pipe. The water purifier protective pipe comprises pipe ends and a pipe body. The two pipe ends are connected between a water inlet pipe and a water purifier. A blocking net is arranged in the pipe body and is perpendicular to the axis of the pipe body. The blocking net is formed through weaving of elastic hollow pipes. The hollow pipes are in airtight connection with the inner wall of the pipe body, and the hollow pipes communicate with one another. The blocking net is provided with a telescopic pipe. The front end of the telescopic pipe is closed through a bearing plate, and the rear end of the telescopic pipe is closed through a pressure limiting valve. The bearing plate is right opposite to the incoming direction of the water flow. The telescopic pipe comprises a hollow pipe wall, and the hollow pipe wall communicates with the hollow pipes. The protective pipe is novel in structure, pipe explosion can be prevented, the inner structure of the water purifier can be effectively protected, and the property and personal safety of residents is protected.

The invention relates to a steam turbine lubricating oil switching washing system and method. The steam turbine lubricating oil switching washing system comprises a bearing block, an oil washing device, an oil conveying pipeline communicated with the oil washing device, and an adjustable plug which is fixed at the end of the oil conveying pipeline and used for adjusting the lubricating oil flow in the pipeline, wherein the oil conveying pipeline includes an oil inlet main pipeline and an oil return main pipeline, the oil inlet of the oil inlet main pipeline is connected with the oil outlet of the oil washing device, the oil outlet of the oil return main pipeline is connected with the oil inlet of the oil washing device, the oil inlet of the bearing block is communicated with the oil inlet main pipeline through an oil inlet pipe, and the oil outlet of the bearing block is communicated with the oil return main pipeline through an oil return pipe. The steam turbine lubricating oil switching washing system has the advantages subsection washing is performed on the oil inlet pipe and the bearing block through the double-layer oil conveying pipeline, the lubricating oil can be cleaned during pipeline cleaning the bearing bush in the bearing block needs not to be demounted, convenience in washing is achieved, and washing lubricating time is saved.

The invention discloses a built-in battery insulated container. The container comprises an insulated object placing body, an insulated cover, an inner container and a heating device. The insulated cover and the insulated object placing body are connected in a threaded manner to form an accommodation cavity. The inner container is accommodated into the accommodation cavity and connected with the inner wall of the insulated object placing body in a threaded manner and used for installing the heating device for heating the inner container to the bottom of the insulated object placing body. The opening edge of the inner container is provided with insulated glue in a surrounding manner. An insulated groove corresponding to the insulated glue is arranged on the insulated cover and provided with an oblique guiding surface. The insulated glue is extruded by the insulated cover and slides along the oblique guiding surface of the insulated groove and bents towards the central line direction of the inner container so that elastic deformation is achieved. The insulated glue abuts against and is accommodated into the insulated groove. The built-in battery insulated container is provided with the insulated object placing body, the insulated cover, the inner container and the heating device so that insulation effect of food is improved.