# US 12,007,071 B2 · Hydrogen pressure vessel

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,007,071 B2
- Document ID: US12007071B2
- Status: Granted
- Kind: B2
- Application number: 17/282,371
- Filed: 2019-09-12
- Published: 2021-11-11
- Granted: 2024-06-11
- Earliest claimed: 2018-10-02
- Assignees: Japan Steel Works M&E, Inc.
- Applicants: Japan Steel Works M&E, Inc.
- Inventors: Yoru Wada; Takafumi Hosoya; Hironobu Arashima
- Web page: https://patentgrep.com/patent/US12007071B2

## CPC

- F17C 1/00: Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge (pressurised apparatus for purposes other than storage, see the relevant subclasses such as A62C, B05B; associated with vehicles, see the appropriate subclass of classes B60 - B64; pressure vessels in general F16J12/00 {; autoclaves B01J3/04; tank vehicles B60P3/22; railway tank wagons for carrying fluent materials B61D5/00; accumulators for supplying fluid under pressure F15B1/04; liquefied gas stoves F24C3/00})
- F17C 13/06: Closures, e.g. cap, breakable member ({for autoclaves B01J3/03}; closures for {large} containers in general B65D {B65D90/54}; {for pressure vessels in general F16J13/00})
- F17C 1/10: with provision for protection against corrosion, e.g. due to gaseous acid ({F17C1/14, F17C1/16 take precedence}; inhibiting corrosion of metallic material or incrustation in general C23F)
- F17C 13/04: Arrangement or mounting of valves (valves per se F16K {; snap-coupling of nipples F16L37/00})
- F17C 2201/0119: with flat end-piece
- F17C 2201/035: with substantially horizontal main axis
- F17C 2201/056: Small (<1 m3)
- F17C 2201/058: portable (<30 l)
- F17C 2203/0604: Liners
- F17C 2203/0617: with one layer
- F17C 2203/0619: with two layers
- F17C 2203/066: Plastics
- F17C 2203/0663: in form of fibers or filaments
- F17C 2205/0305: Bosses, e.g. boss collars
- F17C 2205/0311: Closure means
- F17C 2205/0332: Safety valves or pressure relief valves
- F17C 2205/0335: Check-valves or non-return valves
- F17C 2221/012: Hydrogen
- F17C 2223/0123: gaseous, e.g. CNG, GNC
- F17C 2223/036: Very high pressure (>80 bar)
- F17C 2260/037: Handling leaked fluid
- F17C 2260/053: Reducing corrosion
- Y02E 60/32: Hydrogen storage
- F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A hydrogen pressure vessel capable of preventing hydrogen-induced cracking of a cylinder is provided. In a hydrogen pressure vessel according to one embodiment, a gap part (G) in which an inner peripheral surface of a cylinder (10) is spaced apart from an outer peripheral surface of a lid (20) is provided between a female thread part (10a) of the cylinder (10) into which the lid (20) is screwed, and a resin seal member (30), and the cylinder (10) includes a first through hole (41) for discharging gas in the gap part (G) into a relief pipe (51) and a second through hole (42) for introducing gas containing oxygen into the gap part (G) formed therein.

## Claims

### Claim 1

A hydrogen pressure vessel comprising:
a cylinder filled with hydrogen and integrally formed as a single piece, a portion of an opening end of the cylinder being threaded;
a lid screwed into the threaded portion of the cylinder;
a circular resin seal member provided between an inner circumferential surface of the cylinder and an outer circumferential surface of the lid;
a gap part formed between the inner circumferential surface of the cylinder and the outer circumferential surface of the lid, the gap part being provided between the threaded portion of the cylinder and the resin seal member such that the gap part communicates with threads of the threaded portion of the cylinder; and
a first through hole for discharging gas in the gap part to a relief pipe and a second through hole for introducing gas including oxygen into the gap part formed in the cylinder.

### Claim 2 (depends on 1)

The hydrogen pressure vessel according to claim 1, further comprising a check valve connected to the second through hole.

### Claim 3 (depends on 1)

The hydrogen pressure vessel according to claim 1, further comprising a pump connected to the second through hole.

### Claim 4 (depends on 3)

The hydrogen pressure vessel according to claim 3, further comprising a relief valve provided in the relief pipe.

### Claim 5 (depends on 1)

The hydrogen pressure vessel according to claim 1, wherein the second through hole is provided in a central part in the longitudinal direction of the cylinder that is opposed to the gap part.

### Claim 6 (depends on 1)

The hydrogen pressure vessel according to claim 1, wherein a corner part of the second through hole on an inner circumferential surface of the cylinder is rounded.