In-Situ Sealing Surface Processing Machine for Valve Repair
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Solution Overview
Problem
The existing methods for repairing the eroded attachment surface of the packing sheet in valve devices require detaching the valve device from power-generating facilities, leading to prolonged downtime and difficulties in performing the repair work efficiently.
Innovation Solution
A sealing surface processing machine that includes a pedestal attached to the valve main body, a movable main body, a tool holder, a rotating part, and adjustment devices to position and tilt the tool holder for precise cutting of the attachment surface, allowing for in-situ repair without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the valve device is detached from the power-generating facility for repair processing, then the attachment surface can be processed by a predetermined processing device, but the downtime is prolonged and workability is reduced
Solution Approach 1:
A processing machine is introduced as an intermediary device that can be attached directly to the valve main body at the power-generating facility. This processing machine includes a pedestal attached to the valve main body, a main body with a tool holder, and moving parts that enable the cutting tool to process the attachment surface in-situ, eliminating the need to detach the valve device for repair
Solution Approach 2:
The processing machine incorporates a first moving part that moves the tool holder along the first direction (parallel to valve body movement) and a second moving part that moves the tool holder along the second direction (intersecting with valve body movement). This dynamic positioning system enables flexible and precise processing of the attachment surface without requiring valve device detachment
2Ease of manufacture
If the valve device is detached and transported to another factory for repair, then comprehensive processing can be performed, but the complexity of work increases and efficiency decreases
Solution Approach 1:
The processing machine is designed with multi-functionality to perform various processing operations on the attachment surface. It includes a cutting tool for removing eroded portions, a first moving part for positioning along the valve body movement direction, and a second moving part for positioning in the intersecting direction, enabling comprehensive repair capabilities within the power-generating facility
Solution Approach 2:
The processing machine serves as a self-contained intermediary system that brings factory-level processing capabilities directly to the power-generating facility. By attaching the processing machine to the valve main body, it provides comprehensive processing functions without requiring external transportation or complex external equipment
3Productivity
If the attachment surface is not processed, then the valve device can operate continuously, but the eroded surface disturbs steam flow and reduces performance
Solution Approach 1:
The processing machine is designed to perform preliminary processing of the attachment surface by removing eroded portions before they significantly affect steam flow performance. The cutting tool, positioned by the moving parts, can proactively restore the attachment surface to its original condition, preventing performance degradation while allowing continuous operation
Data Source
Figure 1
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Figure 3~4
AI summary
In this sealing surface processing machine and method, provided are: a pedestal (10) which is attached to a valve main body (110); a main body (20) which is movably supported on the pedestal (10); a tool holder (60) for holding a cutting tool (T) for processing an attachment surface (114); a main shaft (40) which rotates the tool holder (60) relative to the main body (20), around an axis parallel to the movement direction of a valve element (124); a first moving part (30) which is capable of moving the tool holder (60) relative to the main body (20), along the Z-axis direction along which the valve element (124) moves; a second moving part (50) which is capable of moving the tool holder (60) relative to the main body (20), along the X-axis direction and the Y-axis direction which intersect the movement direction of the valve element (124); a first adjustment device (70) which adjusts the position of the main body (20) in the Z-axis direction relative to the pedestal (10); and a second adjustment device (80) which adjusts the position of the main body (20) in the X-axis direction and the Y-axis direction relative to the pedestal (10).