US 12,181,487 B2Granted

High-pressure container inspection method and high-pressure container inspection apparatus

AssigneeHonda Motor Co., Ltd.

InventorsMasaru Nakanishi, Kosuke Tatsushima, Fumihiro Aoki

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Abstract

A high-pressure container inspection method includes a photographing step, an acquiring step, and a determining step. In the photographing step, a carbon fiber is photographed while an outer surface of the carbon fiber wound on a converging portion in an outer peripheral surface of a liner is irradiated with light. In the acquiring step, density information obtained by the reflection of the light with respect to the outer surface of the carbon fiber by the photographing is acquired. In the determining step, the density information obtained by the acquiring step is compared with preset density information to determine whether a shape of a reinforcing layer of the converging portion is good or bad.

Claims5

Dependent claims

A high-pressure container inspection method for a high-pressure container which includes a liner provided with a body portion and a converging portion connected to the body portion and having a metal fitting formed at an end portion and is formed by winding a plurality of layers of a carbon fiber on an outer periphery of the liner to form a reinforcing layer, the high-pressure container inspection method comprising:

a photographing step of photographing at least an outer surface of the carbon fiber wound on the converging portion in the outer periphery while irradiating the outer surface with light;
an acquiring step of acquiring density information obtained by a reflection of the light with respect to the outer surface of the carbon fiber by the photographing;
and
a determining step of determining whether a shape of the reinforcing layer of the converging portion is good or bad by comparing the density information obtained by the acquiring step with preset density information,
wherein a curvature of an outer surface of the reinforcing layer formed by the carbon fiber obtained from the density information is compared with a preset curvature to determine whether the high-pressure container is good or bad,
wherein a first photographing device configured to perform photographing to include a low helical winding forming portion provided with a low helical winding corresponding to a helical winding having an inclination angle of less than 50° with respect to a longitudinal direction of the body portion and a second photographing device configured to perform photographing to include a high helical winding forming portion provided with a high helical winding corresponding to a helical winding having an inclination angle of 50° or more are provided, and
wherein the low helical winding forming portion is photographed by the first photographing device and the second photographing device and the high helical winding forming portion is photographed by the second photographing device.

4 more elements

A high-pressure container inspection apparatus comprising:

a photographing unit configured to photograph a carbon fiber wound on at least a converging portion of a liner in a plurality of layers to form a reinforcing layer;
a conversion unit configured to convert an image captured by the photographing unit into density information;
a storage unit configured to store preset density information and the density information converted by the conversion unit;
a density information comparing unit configured to compare the density information of each layer which is converted by the conversion unit and stored in the storage unit with a threshold value of the preset density information of each layer;
and
a determination unit configured to determine whether a shape of the reinforcing layer is good or bad on the basis of a comparison result of the density information comparing unit,
wherein a curvature of an outer surface of the reinforcing layer formed by the carbon fiber obtained from the density information is compared with a preset curvature to determine whether a high-pressure container is good or bad,
wherein the photographing unit includes a first photographing device configured to perform photographing to include a low helical winding forming portion provided with a low helical winding corresponding to a helical winding having an inclination angle of less than 50° with respect to a longitudinal direction of a body portion of the liner and a second photographing device configured to perform photographing to include a high helical winding forming portion provided with a high helical winding corresponding to a helical winding having an inclination angle of 50° or more, and
wherein the low helical winding forming portion is photographed by the first photographing device and the second photographing device and the high helical winding forming portion is photographed by the second photographing device.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/591,626Filed 3 Feb 2022
Priority: JP 2021-01968610 Feb 2021
Published: US 2022/0252493 A111 Aug 2022
Granted: 31 Dec 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

G01N 9/00
Investigating density or specific gravity of materials
F17C 1/02
Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge: involving reinforcing arrangements
F17C 13/02
Details of vessels or of the filling or discharging of vessels: special adaptations of indicating, measuring, or monitoring equipment
F17C 2201/0109
Cylindrical: with exteriorly curved end-piece

Family

US 2022/0252493 A1Pre-grant publication · published 11 Aug 2022
US 12,181,487 B2This patent

From the US filing history. Foreign family members aren’t listed.

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