3results about How to "Lower cost per use" patented technology

This invention provides a marine single-sided mounting multi-stage removable sealing device, comprising a primary sealing base and a secondary sealing base. The primary sealing base is composed of at least two axially mirror-symmetrically arranged split sealing units spliced ​​together. The primary sealing base includes a sealing section with a radial width greater than the diameter of the bulkhead opening, and a connecting rod perpendicularly connected to one side of the sealing section and passing through the bulkhead opening. The secondary sealing base has a radial width greater than the diameter of the bulkhead opening. The secondary sealing base and the sealing section are located on opposite sides of the bulkhead opening, respectively, for sealing the bulkhead opening. The connecting rod passes through the secondary sealing base and is detachably connected to it. This removable sealing device achieves multi-stage compression sealing, is easy to install and disassemble quickly without damaging the structural material, and is a reusable sealing device. It can be installed and sealed from a single outer side of the hull and is suitable for temporary sealing of pipe penetrations, process holes, and other locations.

This invention discloses a modular cylindrical fuel cell. The modular cylindrical fuel cell includes a fuel end module, a membrane electrode assembly (MEA) module, and an air self-breathing module, which are sequentially connected via a detachable structure. The fuel end module contains a fuel storage chamber for storing and supplying fuel to the anode side of the MEA module. The MEA module contains a membrane electrode assembly for converting the chemical energy of the fuel into electrical energy. The air self-breathing module has a self-breathing air intake structure for supplying air to the cathode side of the MEA module. One of the air self-breathing module and the fuel end module has a positive electrode contact point electrically connected to the MEA module, and the other has a negative electrode contact point electrically connected to the MEA module, for connection to an external circuit to output power. The modular cylindrical fuel cell provided by this invention is compatible with existing standard cylindrical batteries, and each functional module can be independently replaced, resulting in low operating costs.

The present application relates to the technical field of aero-engine manufacturing, and particularly relates to a protection tool and method for shot blasting of a turbine disk of an aero-engine. The protection tool comprises a protection cover provided with a left-side open cavity, and the inner surfaces of the front and rear side walls of the protection cover are provided with a plurality of fitting ribs for being embedded into tooth grooves on the side surfaces of tenons, and the protection cover is tightly covered through precise fitting of the fitting ribs and the tooth grooves. Preferably, the tool further comprises a clamp composed of a U-shaped frame, a driving screw and a pressing block, which is used for tightly clamping the protection cover on the tenons. The protection cover is made of elastic and wear-resistant materials such as rubber. The protection tool of the present application can accurately and reliably protect the tooth profile surfaces on both sides of the tenons from being damaged by shot particles during the shot blasting process, and solves the problems of the traditional adhesive tape protection method, such as poor fitting, low efficiency, easy residue of adhesive stains and the like, significantly improves the quality and efficiency of the shot blasting strengthening process, and reduces the production cost.