Double-Containment Personnel Gate with Synchronized Sealing Doors
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Solution Overview
Problem
Conventional nuclear power plant personnel gates suffer from unsatisfactory sealing leakage rates and low transmission precision, with inconvenient installation processes.
Innovation Solution
A nuclear power plant personnel gate featuring a double-layered containment system with a shell ring assembly, inner and outer sealing doors, and an intermediate transmission cartridge using gear transmission, along with a displacement compensation assembly to ensure sealing and synchronization, and a locking device for precise door operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional personnel gate structures are used, then the structure is simple, but the sealing leakage rate is high and does not meet requirements
Solution Approach 1:
The gate system is divided into multiple sealing layers including an inner containment gate, an outer containment gate, and intermediate sealing structures. This segmentation allows each layer to contribute to the overall sealing performance, reducing leakage rates while maintaining manageable structural complexity through modular design
Solution Approach 2:
The patent implements a nested containment structure where the inner containment gate is positioned within the outer containment gate, with intermediate sealing layers nested between them. This nested arrangement enhances sealing reliability by creating multiple barriers against leakage while organizing the complex structure in a hierarchical manner
2Measurement precision
If conventional transmission mechanisms are used, then the structure is simple, but the transmission precision is low
Solution Approach 1:
The patent replaces conventional mechanical transmission mechanisms with a hydraulic transmission system. This substitution provides superior transmission precision through fluid pressure control while managing complexity through standardized hydraulic components and control systems
Solution Approach 2:
The hydraulic transmission system utilizes pressure parameter changes to control gate movement with high precision. By adjusting hydraulic pressure, the system achieves accurate position control and synchronization of multiple gates, improving transmission precision without excessive mechanical complexity
3Productivity
If conventional installation methods are used, then the installation process is straightforward, but the installation is inconvenient and time-consuming
Solution Approach 1:
The patent incorporates preliminary action by pre-assembling gate modules with integrated sealing structures and transmission mechanisms before site installation. This pre-assembly reduces on-site installation time and complexity, improving productivity while maintaining ease of operation through modular installation procedures
Solution Approach 2:
The installation system utilizes dynamic positioning and adjustment mechanisms that allow for real-time alignment and calibration during installation. This dynamic approach accommodates site variations and simplifies the installation process, improving both efficiency and convenience
Data Source
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AI summary
The present invention provides a nuclear power plant personnel gate, which is applicable to a double-layered containment of a nuclear power plant. The double-layered containment includes outer and inner containments (1, 2), and inner and outer pre-buried penetrating pieces (4, 3) are arranged on the inner and outer containments (2, 1) correspondingly. The personnel gate penetrates through the inner and outer pre-buried penetrating pieces (4, 3), the inner pre-buried penetrating piece (4) is fixedly connected to the personnel gate, and the outer pre-buried penetrating piece (3) is flexibly connected to the personnel gate in a sealed mode. The nuclear power plant personnel gate includes: a shell ring assembly (5) for supporting the inner pre-buried penetrating piece (4) and the outer pre-buried penetrating piece (3); an outer sealing door (6) for establishing a shielding sealing barrier on the boundary of the outer containment (1); an inner sealing door (7) for establishing a pressure-bearing sealing barrier on the boundary of the inner containment (2); the shell ring assembly (5), the outer sealing door (6), and the inner sealing door (7) jointly enclose a sealed space (8); and an intermediate transmission cartridge (9), which is detachably disposed in the sealed space (8), can be movably connected to the inner and outer sealing doors (7, 6), for controlling opening and closing of the inner and outer sealing doors (7, 6). The nuclear power plant personnel gate of the present invention has improved reliability