4results about How to "Maintenance safety" patented technology

The utility model relates to a three-station isolating switch capable of intelligently adjusting grounding and closing synchronization, which comprises a three-station isolating switch and a controller, the three-station isolating switch is provided with a grounding beam, the grounding beam is respectively provided with a group of lifting type grounding contact assemblies corresponding to three-station isolating knife switches, each lifting type grounding contact assembly comprises an insulating fixed support, and the insulating fixed support is provided with a plurality of lifting type grounding contact assemblies. Lifting driving mechanisms are installed at the bottom of the insulating fixing support, the top output ends of the lifting driving mechanisms are connected with insulating parts, the tops of the insulating parts are connected with supporting shafts, grounding contacts are installed at the top ends of the supporting shafts, and all the lifting driving mechanisms are in signal connection with the controller. Displacement sensors are arranged on the rack of the three-position isolating switch corresponding to each group of lifting type grounding contact assemblies, the displacement sensors are used for detecting the height of the corresponding contacts, and all the displacement sensors are in signal connection with the controller; according to the utility model, the adjusting efficiency and precision are obviously improved, rapid and accurate adjustment of grounding closing synchronization is realized, the adjusting time is shortened, and the working efficiency is improved.

This utility model provides a low-pressure rotor support for steam turbines with a buffer structure, belonging to the technical field of motor maintenance equipment. It includes: a base, a housing, lifting lugs, a rotating shaft, a rotating drum, a fixed base, a frame, shaft rollers, a winding drum, and a buffer belt. A housing is installed on the upper end of the base, with a placement groove along the upper edge of the housing and an open opening on the upper side of the housing. When the low-pressure rotor is placed on the support, the buffer belt laid on the surface of the rotating drum can contact the rotating shaft of the downward-placed low-pressure rotor. The rotation of the rotating drum provides buffering. Under the downward pressure of the low-pressure rotor's weight, the rotating shaft presses the buffer belt downward into the gap between the two sets of rotating drums, causing the buffer belt to wrap around the outer end of the low-pressure rotor's rotating shaft and engage with the placement groove in the housing. This not only increases the friction with the rotating shaft, making the low-pressure rotor more stable and less prone to rotating with the rotating drum during maintenance, thus making maintenance safer, but also allows the rotating bolts to contact the outer side of the shaft rollers, fixing the shaft rollers and consequently the winding drum.

This utility model relates to the field of power supply switches, specifically an electrically driven circuit breaker core module. It includes an insulating shell, a spring mechanism, a triggering assembly, a protection unit circuit module, a bracket, and a position adjustment mechanism. An input assembly and an output contact are disposed through the insulating shell. The input assembly includes an input contact and a vacuum tube connected to it, with a conductive busbar electrically connecting the vacuum tube and the output contact. The spring mechanism includes a bolt connected to the vacuum tube, a retaining ring at the end of the bolt, two sleeves fitted onto the bolt, and a spring fitted around the outer circumference of the bolt and connected at both ends to the sleeves. The triggering assembly triggers the opening or closing of the contacts inside the vacuum tube via the spring mechanism. This utility model enables control of the opening and closing states and allows for the detachment of the contacts from the connectors during maintenance, ensuring safe maintenance of the core module.

The application discloses an edge sealing device for an internal floating roof tank with an air bag, which comprises a tank, a floating roof, an edge plate, an air bag, a pressure sensor and a processor. The tank is internally provided with the floating roof, the outer side of the floating roof is provided with the edge plate, the edge plate and the inner wall of the tank are provided with the air bag, the inner wall of the air bag is provided with the pressure sensor and the processor, the pressure sensor and the processor are electrically connected, and the processor is in wireless communication with a user terminal. The pressure sensor can monitor the pressure in the air bag, transmit pressure data to the user terminal, and remind workers to take timely measures when the pressure data in the air bag exceeds the normal range, so that the pressure in the air bag is within a safe range, and safety accidents are avoided.