US3742716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storing of gas under pressure
Assignee: SVENSKA ENTREPRENAD SENTAB
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Filing: 1971-07-27
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Granted: 1973-07-03
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Expires: 1991-07-27
Abstract
Abstract A method of storing gas under pressure in a reservoir comprises applying a pressure of the gas in the reservoir to a surface of a body of liquid outside the reservoir so as to resist leakage of gas from the reservoir. The reservoir may be constituted by an underground cavity, a cavity near the ground or by a container within such a cavity. In one application use is made of a second cavity above the reservoir and a connection from the reservoir opening into the second cavity above an intermediate level, liquid being supplied to the second cavity up to the intermediate level. In another application the reservoir acts as the storage chamber of a compressed air power storage system connected to a water supply. In a third application especially intended for LPG or LNG the reservoir is constituted by a container within a cavity near or below the earth, the container having walls which are separated from the sides of the cavity by a space, the method including introducing a body of liquid comprising a material remaining plastic or liquid at the temperature of the gas to the said space. Also disclosed is apparatus for storing gas under pressure.
Inventors
- 👤 A Backstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:56
CPC Classifications
B; B65; B65G; B65G5/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
84 words
A method of storing gas under pressure in a reservoir having a wall which is not reliably gas-tight, comprising: applying the pressure of the gas in the reservoir to a free surface of a body of liquid outside the reservoir, the free surface being at about the same or a higher level than the top portion of the reservoir wall, and applying the pressure of the body of liquid to said wall from outside said wall to resist leakage of gas from the reservoir.
Claim 2
Independent Claim
84 words
A method of storing gas under pressure in a reservoir having a wall which is not reliably gas-tight, comprising: applying the pressure of the gas in the reservoir to a free surface of a body of liquid outside the reservoir, the free surface being at about the same or a higher level than the top portion of the reservoir wall, and applying the pressure of the body of liquid to said wall from outside said wall to resist leakage of gas from the reservoir.
Claim 3
Dependent Claim
15 words
A method according to claim 1, applied to a reservoir constituted by an underground cavity.
Claim 4
Dependent Claim
29 words
A method according to claim 1, applied to the reservoir constituted by an underground cavity, in which the body of liquid is directed into the ground around the cavity.
Claim 5
Dependent Claim
66 words
A method according to claim 1, wherein a second cavity above the reservoir is provided, a connection is provided from the reservoir which opens into the second cavity above an intermediate level, and passages are provided leading from the second cavity from below the intermediate level into the ground around the reservoir, the method including supplying liquid to the second cavity up to the intermediate level.
Claim 6
Independent Claim
101 words
A method of storing air under pressure in a reservoir acting as an underground storage chamber of a compressed air power storage system comprising the steps of applying the pressure of the air in the reservoir to a surface of a body of liquid in a second cavity above the reservoir by means of a connection from the reservoir opening into the second cavity above an intermediate level, and directing liquid from the second cavity from below the intermediate level into the ground around the reservoir, the method further including supplying liquid to the second cavity up to the intermediate level.
Claim 7
Independent Claim
101 words
A method of storing air under pressure in a reservoir acting as an underground storage chamber of a compressed air power storage system comprising the steps of applying the pressure of the air in the reservoir to a surface of a body of liquid in a second cavity above the reservoir by means of a connection from the reservoir opening into the second cavity above an intermediate level, and directing liquid from the second cavity from below the intermediate level into the ground around the reservoir, the method further including supplying liquid to the second cavity up to the intermediate level.
Claim 8
Dependent Claim
59 words
A method according to claim 5, in which the reservoir is connected to a water supply, the method including forcing air into the reservoir, and later receiving air from the reservoir into a power plant, thus permitting water to enter and fill the reservoir and also to enter the second cavity and to serve as the body of liquid.
Claim 9
Independent Claim
98 words
A method of storing gas under pressure in a reservoir constituted by a container within an underground cavity, the container having walls which are not reliably gas-tight and which are separated from the sides of the cavity by a space, comprising the steps of introducing a body of liquid into the said space and applying the pressure of the gas in the reservoir to the surface of the body of liquid such that the pressure of the body of liquid being thereby applied to the walls of the container to thereby resist leakage of gas from the reservoir.
Claim 10
Independent Claim
98 words
A method of storing gas under pressure in a reservoir constituted by a container within an underground cavity, the container having walls which are not reliably gas-tight and which are separated from the sides of the cavity by a space, comprising the steps of introducing a body of liquid into the said space and applying the pressure of the gas in the reservoir to the surface of the body of liquid such that the pressure of the body of liquid being thereby applied to the walls of the container to thereby resist leakage of gas from the reservoir.
Claim 11
Dependent Claim
40 words
A method according to claim 7, in which the gas is at sub atmospheric temperature and is at least partly liquefied, and said body of liquid is a material which remains plastic or liquid at the temPerature of the gas.
Claim 12
Dependent Claim
81 words
Apparatus for storing gas under pressure, comprising a reservoir having a wall which is not reliably gas-tight, means for applying the pressure of gas in the reservoir to a free surface of a body of liquid outside the reservoir, the free surface being at about the same or a higher level than the top portion of the reservoir wall, and means for applying the pressurized liquid to said wall from outside said wall to resist leakage of gas from the reservoir.
Claim 13
Dependent Claim
81 words
Apparatus for storing gas under pressure, comprising a reservoir having a wall which is not reliably gas-tight, means for applying the pressure of gas in the reservoir to a free surface of a body of liquid outside the reservoir, the free surface being at about the same or a higher level than the top portion of the reservoir wall, and means for applying the pressurized liquid to said wall from outside said wall to resist leakage of gas from the reservoir.
Claim 14
Dependent Claim
74 words
Apparatus according to claim 9, in which the reservoir is constituted by an underground cavity, the apparatus including a second cavity above the reservoir, a connection from the reservoir which opens into the second cavity above an intermediate level, and passages leading from the second cavity from below the intermediate level into the ground around the reservoir, the walls and the roof of the second cavity being sealed by means of a concrete layer.
Claim 15
Dependent Claim
77 words
Apparatus according to claim 9 in which the reservoir is constituted by a container within an at least partly underground cavity, the container having walls which are separated from the sides of the cavity by a space, said space being filled with a liquid, the top of the container being constituted by the roof of the cavity, and said roof being lined by a gas-tight ceiling having edges which extend downwards into the liquid in the space.
Claim 16
Dependent Claim
20 words
Apparatus according to claim 11, wherein said liquid is at least one of a petroleum product or mineral oil product.
Claim 17
Dependent Claim
10 words
Apparatus according to claim 11, wherein said liquid is bitumen.
Claim 18
Dependent Claim
18 words
A method according to claim 1, applied to a reservoir constituted by a container within an underground cavity.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |