Turbine Casing Heat Retention Block Locking for Fast Secure Mounting
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Solution Overview
Problem
The existing heat retention structure for turbine casings is inefficient due to the lack of secure adhesion of heat retention blocks, which leads to heat dissipation and requires multiple operation steps for installation and maintenance, and the fabric belt securing method is prone to weakening over time.
Innovation Solution
A heat retention device featuring a heat retention block filled with inorganic fibers and a securing rod with protrusions that engage with a socket on the turbine casing, allowing for robust and efficient heat retention and easy installation/removal, using a combination of guide grooves and recessed grooves for secure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If heat retention blocks are secured using fabric belts, then installation is simple, but adhesion strength is insufficient and deteriorates over time
Solution Approach 1:
The patent replaces the fabric belt mechanical fastening system with a socket-based mechanical interlocking system. The socket is embedded in the heat retention block and engages with a corresponding protrusion on the turbine casing, providing reliable mechanical adhesion that does not deteriorate over time like fabric belts.
Solution Approach 2:
The heat retention block is divided into multiple blocks, each with its own socket for independent securing. This segmentation allows each block to be individually attached to the turbine casing using the socket-protrusion mechanism, ensuring consistent adhesion strength across the entire heat retention system.
2Reliability
If multiple layers of heat insulating material are laminated, then heat retention is improved, but installation steps increase
Solution Approach 1:
The patent combines multiple heat insulating material layers into a single integrated heat retention block structure. The socket is embedded within this integrated block during manufacturing, allowing the entire multi-layer insulation system to be installed as one unit rather than requiring separate lamination steps during maintenance.
Solution Approach 2:
The socket is pre-embedded in the heat retention block during manufacturing rather than being installed during maintenance operations. This preliminary action eliminates the need for complex lamination steps during installation, as the block arrives ready-to-attach with its securing mechanism already in place.
3Ease of operation
If heat retention blocks are frequently attached and detached for maintenance, then inspection accessibility is improved, but adhesion structure deteriorates
Solution Approach 1:
The patent replaces the fabric belt fastening system with a socket-protrusion mechanical interlocking system that is designed for repeated attachment and detachment cycles. The rigid mechanical connection maintains its integrity over time, unlike fabric belts that deteriorate with frequent use, while still allowing easy removal for maintenance inspections.
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
The solution provides enhanced heat retention performance, reduces installation time, and ensures the heat retention block can be securely attached and detached from the turbine casing without significant degradation over time.
Implementation Method 1
an outer surface of the turbine casing is normally covered by a heat retention block made of a heat insulating material, for preventing heat dissipation
Data Source
AI summary
A securing tool for a heat retention block covering a turbine casing main body includes: a securing rod, one end of which has an engaging portion with a protrusion; and a socket. The socket includes a guide groove, into which the protrusion of the securing rod is inserted, and a recessed groove. The guide groove includes a first guide groove, which extends in the socket axis direction from a starting end to a terminal end, and a second guide groove, the starting end of which is connected to the terminal end, and which extends from the starting end to a terminal end in a circumferential direction relative to the socket axis. The second guide groove is connected to the recessed groove.