High-Pressure Container Shell Reinforcing Layer Wrapping

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Solution Overview

Problem

The existing high-pressure container designs using laminated fiber-reinforced sheets for tubular liners increase costs due to the extensive use of both fiber-reinforced sheets, necessitating a method to enhance rigidity while reducing expenses.

Innovation Solution

A high-pressure container design featuring a shell with a cylindrical shape, wrapped with a first reinforcing layer oriented in the circumferential direction and a second reinforcing layer oriented in the axial direction, where the second layer is placed over a specific region of the first layer, reducing material usage and cost, and incorporating a cap projection to secure the cap without additional members.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If both first fiber-reinforced sheet and second fiber-reinforced sheet are placed over the entire surface to enhance rigidity, then the rigidity of the tubular liner is enhanced, but the manufacturing cost increases

Engineering Contradiction:
ImproverigidityVSAvoidcost
Core Design Contradiction:
StrengthVSQuantity of substance

Solution Approach 1:

The patent applies local quality by placing the second fiber-reinforced sheet (with fibers oriented in the axial direction) only at specific locations where additional rigidity is needed, rather than covering the entire surface. This allows the tubular liner to achieve the required rigidity while reducing the total amount of expensive fiber-reinforced material used, thereby lowering manufacturing costs.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent segments the reinforcement strategy by dividing the fiber-reinforced sheets into different functional zones: the first sheet provides baseline circumferential reinforcement, while the second sheet is strategically placed in specific regions to provide additional axial reinforcement where needed, optimizing both performance and cost.

Inventive Principle:
Principle #1Segmentation

2Reliability

If additional members are used to prevent cap from coming off, then the cap is secured, but the device complexity increases

Engineering Contradiction:
Improvecap securityVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The cap is designed with an integrated projection that automatically engages with the shell structure to prevent the cap from coming off. This self-securing mechanism eliminates the need for additional fastening members or complex locking mechanisms, reducing device complexity while maintaining reliability.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The cap retention function is merged into the cap structure itself through the integrated projection, combining the sealing and retention functions into a single component rather than requiring separate members for each function.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS10845004B2High-pressure container and shell reinforcing layer wrapping method
Publication Date: 2020.11.24 TOYOTA JIDOSHA KK
  • US10845004B2 patent drawing
  • US10845004B2 patent drawing
  • US10845004B2 patent drawing

AI summary

An end of a shell forming a high-pressure container is opened to form an opening. A cap is disposed partially inside the opening to close the opening. A shell reinforcing layer having a first reinforcing layer that is made of a first fiber-reinforced resin having a fiber direction oriented in a circumferential direction, and a second reinforcing layer that is integrated with the first reinforcing layer and made of a second fiber-reinforced resin having a fiber direction oriented in an axial direction, is wrapped in layers around an outer circumferential surface of the shell. The second reinforcing layer is placed over a region of the first reinforcing layer.