CN-117628400-B - Air pressure regulating system and method for air storage

Abstract

The embodiment of the invention discloses a gas storage gas pressure regulating system and a method, wherein the gas storage gas pressure regulating system comprises a gas storage, a pressure measuring device, a pressure relief assembly and a pressure relief channel, wherein a sandwich cavity is formed between an inner membrane and an outer membrane of the gas storage, the pressure measuring device is used for acquiring gas pressure information in the sandwich cavity, the pressure relief assembly is connected with the outer membrane and comprises a main body part, an inner door and an outer door which are connected with two opposite ends of the main body part, the inner door and the outer door are enclosed together to form the pressure relief channel, the inner door is used for communicating the sandwich cavity and the pressure relief channel when the inner door is in an open state, the outer door is used for communicating the pressure relief channel and the atmosphere when the gas pressure information in the sandwich cavity accords with first preset information, and the pressure relief assembly is in an open state so as to communicate the sandwich cavity, the pressure relief channel and the atmosphere. The embodiment of the invention can realize the rapid pressure relief of the interlayer cavity of the gas storage, and ensure that the interlayer pressure difference is in a safe and reliable range.

Inventors

• WANG QIN
• WANG XIAOYONG
• CHEN QIANG

Assignees

• 百穰新能源科技(深圳)有限公司

Dates

Publication Date

20260508

Application Date

20231213

Claims (7)

1. 1. A gas storage air pressure regulating system, comprising: the gas storage comprises an inner membrane and an outer membrane, wherein an interlayer cavity is formed between the inner membrane and the outer membrane, and an air outlet communicated with the interlayer cavity is formed in the outer membrane; the pressure measuring device is used for acquiring the air pressure information in the interlayer cavity; The pressure relief assembly comprises a main body part, an inner door and an outer door which are connected with two opposite ends of the main body part, wherein the main body part, the inner door and the outer door jointly enclose to form a pressure relief channel, and the through flow cross section area of the pressure relief channel is more than four times of the through flow cross section area of the air outlet; The pressure relief assembly is used for synchronously opening the outer door and the inner door when the air pressure information in the interlayer cavity accords with first preset information so as to communicate the interlayer cavity, the pressure relief channel and the atmosphere; And the exhaust device is connected to the exhaust outlet and is used for exhausting the gas in the interlayer cavity to the atmosphere when the air pressure information in the interlayer cavity accords with second preset information.
2. 2. The gas storage gas pressure regulating system as claimed in claim 1, wherein said pressure measuring device comprises a pressure sensor for detecting the pressure in said sandwich chamber.
3. 3. The air pressure regulating system of the air storage, as set forth in claim 2, wherein the first preset information includes a first preset pressure and a first preset number, the number of the pressure sensors is plural, the air pressure information includes readings of plural pressure sensors, the pressure sensor having a reading equal to or greater than the first preset pressure is a first sensor, and the air pressure information conforms to the first preset information when the number of the first sensors is equal to or greater than the first preset number.
4. 4. The air reservoir air pressure regulating system as recited in claim 1 wherein said inner door remains closed to isolate said sandwich cavity from said pressure relief passage when said air pressure information of said sandwich cavity does not correspond to said first predetermined information and/or wherein said inner door and said outer door are interlocked for synchronized movement.
5. 5. The air pressure regulating system of an air storage according to claim 1, wherein the pressure relief assembly further comprises a flexible connection portion connected between the outer membrane and the inner door, a connection channel is formed in the flexible connection portion and is communicated with the interlayer cavity, and the inner door is used for communicating the connection channel and the pressure relief channel in an open state.
6. 6. The air pressure regulating system of air storage as claimed in claim 1 further comprising an air supply device connected to said outer membrane for supplying air into said sandwich chamber.
7. 7. A method for regulating the air pressure of an air reservoir, characterized in that the air pressure regulating system based on the air reservoir according to any one of claims 1 to 6 comprises: When the air pressure information in the interlayer cavity obtained by the pressure measuring device accords with first preset information, opening the inner door and the outer door to communicate the interlayer cavity, the pressure relief channel and the atmosphere; and when the air pressure information in the interlayer cavity acquired by the pressure measuring device accords with second preset information, opening the air exhaust device to exhaust the air in the interlayer cavity to the atmosphere.

Description

Air pressure regulating system and method for air storage Technical Field The invention relates to the technical field of gas storage, in particular to a gas storage air pressure adjusting system and method. Background The carbon dioxide energy storage technology is a gas-liquid conversion two-state cooperative energy storage technology which does not depend on geological conditions, has long service life, high reliability and low cost, and can be used for supporting peak clipping and valley filling, frequency modulation and phase modulation of a power grid and providing a standby power supply for the power grid. In the energy storage stage, the system compresses and cools the atmospheric carbon dioxide in the gas storage through the energy storage component by utilizing the abundant electric energy, and condenses the atmospheric carbon dioxide into liquid state to be stored in the energy storage container (namely the liquid storage tank). In the energy release stage, the liquid carbon dioxide is gasified and heated by the energy release assembly, then drives the turbine to apply work and release energy outwards, and the carbon dioxide after the work is finished returns to the gas storage to prepare for the next energy storage cycle. In a carbon dioxide energy storage system, a gas storage tank with a double-layer membrane structure is generally adopted, an interlayer cavity is formed between an inner membrane and an outer membrane of the gas storage tank, and during the operation of the carbon dioxide energy storage system, gas needs to be filled into the interlayer cavity to maintain the shape. During the energy release period, a large amount of carbon dioxide floods into the accommodating cavity of the gas storage, so that the pressure difference between the interlayer cavity and the outside atmosphere (called as interlayer pressure difference for short) is quickly increased, the existing exhaust device is easy to cause mechanical failure, the gas in the interlayer cavity is difficult to be quickly exhausted, and accidents such as cracking and blasting of the gas storage can be possibly caused. Disclosure of Invention Therefore, in order to solve the problem that the rapid rise of the interlayer pressure difference may cause the rupture and explosion of the gas storage in the prior art, the embodiment of the invention provides a gas pressure regulating system and a method for the gas storage, which can realize the rapid discharge of the gas in the interlayer cavity through a pressure release component, realize the rapid pressure release of the interlayer cavity, ensure the interlayer pressure difference to be in a safe and reliable range and prevent the occurrence of safety accidents such as the rupture and explosion of the gas storage. The air pressure regulating system of the air storage comprises an air storage body, a pressure measuring device, a pressure releasing assembly and an air releasing assembly, wherein an interlayer cavity is formed between an inner film and an outer film of the air storage body, the pressure measuring device is used for acquiring air pressure information in the interlayer cavity, the pressure releasing assembly is connected to the outer film and comprises a main body part, an inner door and an outer door which are connected to two opposite ends of the main body part, the inner door and the outer door are jointly enclosed to form a pressure releasing channel, the inner door is used for communicating the interlayer cavity and the pressure releasing channel in an opening state, the outer door is used for communicating the pressure releasing channel and the air in an opening state, and the pressure releasing assembly is used for opening the outer door and the inner door when the air pressure information in the interlayer cavity accords with first preset information so as to communicate the interlayer cavity, the pressure releasing channel and the air. In some embodiments, the pressure measuring device comprises a pressure sensor for detecting a pressure within the sandwich chamber. In some embodiments, the number of the pressure sensors is a plurality, the air pressure information comprises readings of the pressure sensors, and when the number of the first sensors is greater than or equal to a first preset number, the air pressure information accords with the first preset information, and the first sensors are pressure sensors with readings greater than or equal to a first preset pressure. In some embodiments, the inner door remains closed to isolate the mezzanine cavity from the pressure relief channel when the air pressure information of the mezzanine cavity does not correspond to the first preset information, and/or the inner door and the outer door are interlocked for synchronous motion. In some embodiments, the pressure relief assembly further comprises a flexible connection portion connected between the outer membrane and the inner door, a connection channel is formed in