4results about How to "Maintenance free" patented technology

This utility model discloses a metal-faced sandwich composite integrated panel for shielded rooms, relating to the fields of electromagnetic shielding and building envelope technology. This utility model includes a new integrated panel one for external building shielding and enclosure and a new integrated panel two for internal building shielding, decoration, and sound absorption. New integrated panel one consists of an enclosure layer, a sandwich layer, and a shielding layer; new integrated panel two consists of a shielding layer, a sandwich layer, and an enclosure layer. Through the unique design of new integrated panels one and two, this utility model is suitable for a wide frequency band of 10kHz-50GHz, exhibiting excellent shielding effectiveness, meeting and exceeding the national military standard GJB5792A-2021C level standard, fully meeting the design requirements of anechoic chambers and other types of shielded rooms. New integrated panels one and two are produced and constructed using innovative models and processes, achieving true integrated shielding, resulting in higher construction efficiency, better quality, stronger safety, shorter cycle time, and higher cost-effectiveness.

An object of the present invention is to obtain a gas adsorbent, a gas adsorption sheet, a filter medium, and an air filter that are excellent in gas component adsorption capacity and excellent in long-term stability of the adsorption capacity and also re-release little odor after being used as an air filter. A main object of the present invention is to provide a gas adsorbent that contains an acid-impregnated activated carbon, a base-impregnated activated carbon, and an aldehyde adsorbent.

The application discloses a wind power blade liquid damper, a prefabrication method and a wind power blade. The liquid damper comprises an elongated pipe and damping liquid. The elongated pipe is arranged in parallel on the SS inner surface and the PS inner surface of the wind power blade at a preset interval, is located at the wind power blade tip, is arranged along the airfoil contour line of the wind power blade, and is connected to the leading edge and the trailing edge of the wind power blade at two ends. The central axis of each elongated pipe is perpendicular to the pitch shaft of the wind power blade. The damping liquid is filled in the elongated pipe at a preset volume filling rate, so that the damping liquid is constrained in the elongated pipe and flows back and forth along the airfoil contour line of the wind power blade. The centrifugal force direction of the blade is always perpendicular to the movement track of the damping liquid. The liquid turbulent flow is generated by bending the elongated pipe to absorb vibration energy, the first-order pendulum vibration of the wind power blade can be effectively inhibited, and the liquid damper can meet the maintenance-free characteristic requirement in the service life.

This invention relates to the field of control model library management technology, specifically disclosing a combinatorial compilation method and system for control model library reuse. Addressing the shortcomings of existing technologies, such as reliance on manual verification, numerous implicit modifications, high mismatch risks, and untraceable reuse processes, this invention establishes encapsulation contracts for reusable units within the library, including input hypotheses, output commitments, timing windows, resource usage, and security levels. It constructs a combinatorial dependency graph based on the reuse requirements of the target project, performs multi-dimensional compatibility solving for interfaces, timing, resources, and security levels, and completes unit hierarchical labeling. For conditionally compatible units, it automatically generates wrapper layer code to match differences. After combinatorial compilation, it outputs target code, version seal records, and reuse evidence files, and provides replacement recommendations and enhancement suggestions for incompatible units. This effectively reduces reuse mismatch risks, eliminates implicit code modifications, and achieves full-process traceability and auditability for reuse, making it suitable for high-safety control scenarios such as flight control and rail transit signaling.