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Low-pressure-difference sealed gravity compressed air energy storage system and method

A compressed air energy storage, low pressure differential technology, applied in wind power generation, energy storage, reduction of greenhouse gases, etc., can solve the problem of reduced service life of the sealing film

Active Publication Date: 2022-07-08
XIAN THERMAL POWER RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this time, the outside of the sealing film is at normal atmospheric pressure, and the inside is high-pressure gas, so the sealing film is subjected to high-intensity tensile stress, which reduces the service life of the sealing film

Method used

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  • Low-pressure-difference sealed gravity compressed air energy storage system and method
  • Low-pressure-difference sealed gravity compressed air energy storage system and method
  • Low-pressure-difference sealed gravity compressed air energy storage system and method

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Embodiment Construction

[0037] The following describes in detail the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but should not be construed as a limitation on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0038] figure 1 It is a schematic structural diagram of a gravity compressed air energy storage system with low pressure differential sealing proposed in an embodiment of the present application.

[0039] see figure 1 , a low-pressure differential sealed gravity compressed air energy storage system, comp...

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Abstract

The invention provides a low-pressure-difference sealing gravity compressed air energy storage system and method.The energy storage system comprises a vertical shaft and a sealing film, a gravity plunger is movably inserted into the vertical shaft, and a gap is formed between the vertical shaft and the gravity plunger; the sealing film is located in the gap, and the sealing film is connected with the vertical shaft and the gravity plunger in a sealed mode, so that an air storage cavity is defined by the gravity plunger, the sealing film and the space, located below the sealing film, of the vertical shaft and used for storing compressed air. A regulating cavity is defined by the sealing film, the gravity plunger and the space, located above the sealing film, of the vertical shaft, pressure liquid is introduced into the regulating cavity, and the pressure liquid exerts downward pressure on the sealing film through injection of the pressure liquid into the regulating cavity above the sealing film. The pressure effect of the pressure liquid on the sealing film can reduce the internal and external pressure difference of the sealing film, thereby reducing the stress of the sealing film, prolonging the service life of the sealing film and reducing the cost of the sealing film.

Description

technical field [0001] The present application relates to the technical field of electrical energy storage, and in particular, to a low differential pressure sealed gravity compressed air energy storage system and method. Background technique [0002] The core of the air storage chamber for gravity compressed air energy storage is the air storage chamber sealing membrane. In the existing project plan, one side of the cylindrical sealing membrane is connected to the shaft wall, and the other side is anchored on the weight to form an arched sealing structure. At this time, the outside of the sealing film is normal atmospheric pressure, and the inside is high-pressure gas, so the sealing film is subjected to high-strength tensile stress, which reduces the service life of the sealing film. SUMMARY OF THE INVENTION [0003] The present application aims to solve one of the technical problems in the related art at least to a certain extent. [0004] Therefore, the purpose of thi...

Claims

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Application Information

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IPC IPC(8): F01K27/00F03G3/00F04B35/04F04B41/02
CPCF01K27/00F03G3/00F04B35/04F04B41/02Y02E70/30
Inventor 文军赵瀚辰李阳杨成龙姬海民宋晓辉梁法光
Owner XIAN THERMAL POWER RES INST CO LTD
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