Hydrostatic Test Device Sealing for High Pressure Turbine
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Solution Overview
Problem
Existing hydrostatic test devices for high-pressure turbines face challenges in independently sealing the main steam inlet, leading to increased handling time and unreliable test results due to the need for long, heavy pipes that can become inclined, causing uneven water pressure distribution.
Innovation Solution
A hydrostatic test device featuring O-ring assemblies with fitting plates that securely seal feeding holes in the upper and lower casings, eliminating the need for external pipes to fix the sealing members, allowing for independent sealing and easy assembly/disassembly, ensuring uniform water pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If long heavy pipes are used to fix sealing members between upper and lower casings, then the sealing members can be secured in position, but the handling time increases and the pipes may become inclined causing uneven water pressure
Solution Approach 1:
The sealing member is divided into multiple segments that can be independently positioned and secured within the feeding hole. Each segment can be handled separately, eliminating the need for long heavy pipes while maintaining secure positioning during the hydrostatic test.
Solution Approach 2:
An intermediary structure (the feeding hole itself with integrated positioning features) is used to secure the sealing member directly in place, replacing the need for external pipes. The feeding hole's geometry provides natural positioning and support for the sealing member.
2Reliability
If long heavy pipes are used to fix sealing members, then the sealing members can be secured, but the pipes may become inclined during testing causing uneven water pressure distribution
Solution Approach 1:
The sealing member is segmented into multiple parts that can be independently positioned and secured within the feeding hole. This segmentation allows each segment to be properly supported and positioned, preventing inclination and ensuring uniform water pressure distribution during the hydrostatic test.
Solution Approach 2:
The feeding hole structure serves as an intermediary that directly secures the sealing member in the correct position, eliminating the need for external pipes that could become inclined. The integrated design ensures proper alignment and uniform water pressure distribution.
3Reliability
If external pipes are used to fix sealing members, then the sealing can be achieved, but the device complexity increases due to additional components
Solution Approach 1:
The sealing member is merged with the feeding hole structure, eliminating the need for separate external pipes. The feeding hole's geometry is designed to directly secure the sealing member, reducing the number of components while maintaining effective sealing.
Solution Approach 2:
The feeding hole acts as an intermediary structure that integrates the sealing function, eliminating the need for external pipes. This integrated approach reduces device complexity while achieving reliable sealing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution simplifies the hydrostatic test process by allowing independent sealing of feeding holes, reducing handling time, and ensuring consistent water pressure, thereby enhancing the reliability and accuracy of the test results.
Implementation Method 1
sealing members which are fixed into the feeding holes to seal the feeding holes
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A hydrostatic test device for a turbine may include a plurality of feeding holes having a groove part formed with a greater diameter. Sealing members may be fitted into feeding holes in upper or lower casings of a turbine to seal the feeding holes.