Insulated Tank Corner Anchoring to Protect Sealed Membranes
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Solution Overview
Problem
Existing sealed and thermally insulating tanks for low-temperature liquids face challenges in managing thermal deformations and stresses on membranes during loading and transportation, which can impair sealing and put excessive shear stresses on insulating barriers.
Innovation Solution
The design incorporates an angle bracket system with flanges and tabs anchored directly to the bearing walls, using anchor rods to transmit tensile loads and connect sealed membranes, thereby reducing stress on the insulating barriers and eliminating the need for additional fixation methods like riveting, while maintaining rigidity and allowing for easier assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anchor strips are fixed to insulating edging blocks during prefabrication and aligned along edge corners, then the sealed membranes can be connected at corners, but high shear stresses are applied to the insulating barriers and bearing structure
Solution Approach 1:
The invention extracts the anchoring function from the insulating barrier system by introducing separate anchor rods that connect angle brackets directly to the bearing structure. This separation removes the shear stress burden from the insulating barriers while maintaining the sealing connection function.
Solution Approach 2:
Angle brackets serve as intermediary elements that connect the sealed membranes to the bearing structure through anchor rods. These angle brackets transfer tensile forces directly to the bearing structure without imposing shear stresses on the insulating barriers, thus mediating between the membrane and support structure.
2Strength
If composite beams fixed to insulating box structures are used to connect sealed membranes to couplers, then the membranes can be anchored on the bearing structure, but the insulating barrier elements are subjected to high shear stresses
Solution Approach 1:
The invention extracts the load-bearing anchoring function from the insulating barrier by using separate anchor rods connected to the bearing structure. The insulating barrier elements are relieved of shear stress while the anchoring strength is maintained through the angle bracket and anchor rod assembly.
Solution Approach 2:
Angle brackets act as intermediary components that receive the sealed membranes and transfer forces to anchor rods, which then connect directly to the bearing structure. This intermediary system maintains strong anchoring while protecting the insulating barrier elements from shear stresses.
3Stability of the object's composition
If additional fixation methods like riveting are used to secure angle brackets to insulating edging blocks, then the assembly rigidity is improved, but the prefabrication process becomes more complex
Solution Approach 1:
The invention extracts the fixation requirement from the prefabrication process by designing angle brackets that are not fixed to insulating edging blocks during prefabrication. Instead, the angle brackets are positioned and secured through anchor rods after assembly, eliminating the need for additional fixation methods like riveting during prefabrication.
Solution Approach 2:
The angle brackets are designed to be self-positioning on the insulating edging blocks during assembly, utilizing the block geometry for alignment. The anchor rods then provide the securing function, allowing the system to achieve rigidity without complex prefabrication fixation steps.
Data Source
AI summary
Sealed and thermally insulating tank incorporated into a polyhedral bearing structure, the tank having a plurality of tank walls, a thermally insulating barrier and a sealed membrane, a first bearing wall and second bearing wall forming an edge corner, the thermally insulating barrier of a first tank wall having a row of edging blocks, a row of anchor strips anchored to the second bearing wall by a row of anchor rods, a first and second of edging blocks each having a groove formed in thickness of said edging block, a first and a second of said anchor rods being housed respectively in the groove of the first and second edging blocks, one anchor strip in the row of anchor strips is supported overlapping the first edging block and the second edging block, the anchor strip being coupled to the first anchor rod and to the second anchor rod.