阅读说明：本技术 气体储存装置及方法 (Gas storage device and method ) 是由 梅生伟 薛小代 谢毓广 陈来军 张学林 刘当武 张通 郑天文 高博 陈锋 李伟 于 2019-10-21 设计创作，主要内容包括：本发明涉及气体存储设备技术领域,尤其涉及一种气体储存装置及方法。本发明所述的气体储存装置包括浸没在环境液体中的刚性的储气腔,采用水下储气的方式进行气体存储,能够直接节约地面空间；储气腔内形成有内液面,以将气体液封在储气腔内且位于内液面上方,位于内液面下方的内部液体与环境液体连通,储气腔在充气或放气时内液面随气压变化而升降,配合刚性储气腔进行储气,液体可随储气腔中压缩气体的充放自动进入或排出储气腔,通过水利压强保证储气腔内气压的稳定；由于储气腔内外压力一致,使得储气腔本体强度要求降低,能够有效降低材料成本；此外,储气腔不随充放气发生形变,其寿命较长,该装置的结构简单,加工制造及后期运行维护简便。(The invention relates to the technical field of gas storage equipment, in particular to a gas storage device and a method. The gas storage device comprises a rigid gas storage cavity immersed in environmental liquid, and gas is stored in an underwater gas storage mode, so that the ground space can be directly saved; an inner liquid level is formed in the gas storage cavity to seal gas liquid in the gas storage cavity and is positioned above the inner liquid level, the inner liquid positioned below the inner liquid level is communicated with environmental liquid, the inner liquid level is lifted along with the change of air pressure when the gas storage cavity is inflated or deflated, the gas storage cavity is matched with the rigid gas storage cavity for gas storage, the liquid can automatically enter or be discharged out of the gas storage cavity along with the inflation and deflation of compressed gas in the gas storage cavity, and the stability of the air pressure in the gas storage cavity is ensured through water pressure; the pressure inside and outside the gas storage cavity is consistent, so that the strength requirement of the gas storage cavity body is reduced, and the material cost can be effectively reduced; in addition, the air storage cavity does not deform along with inflation and deflation, the service life of the air storage cavity is long, the device is simple in structure, and the processing, manufacturing and later-period operation and maintenance are simple and convenient.)

1. A gas storage device is characterized by comprising a rigid gas storage cavity immersed in environmental liquid, wherein an inner liquid level is formed in the gas storage cavity, the inner liquid level is used for sealing gas liquid in the gas storage cavity and is positioned above the inner liquid level, the inner liquid positioned below the inner liquid level is communicated with the environmental liquid, and the inner liquid level is lifted along with the change of air pressure when the gas storage cavity is inflated or deflated.

2. The gas storage device as defined in claim 1 in which the bottom of the gas storage chamber is provided with an open communication port.

3. The gas storage device as defined in claim 2, wherein the open communication port is defined by a bottom end of a side wall of the gas storage chamber.

4. The gas storage device as defined in claim 2, wherein a bottom plate is provided at a bottom of said gas storage chamber, and at least one of said open communication ports is formed through said bottom plate.

5. The gas storage device as defined in claim 2 in which the total diameter of all of said open communication ports is greater than one-half of the maximum hydraulic diameter of the gas storage chamber in the horizontal direction.

6. A gas storage device according to any one of claims 1 to 5 in which a conduit is connected to the reservoir chamber, one end of the conduit communicating with the space above the internal liquid level and the other end communicating with the exterior of the ambient liquid.

7. A gas storage device as claimed in claim 6 in which a gas flow control valve is mounted on the conduit.

8. The gas storage device as defined in claim 6 in which said tubing is flexible pressure tubing.

9. A gas storage device as claimed in any one of claims 1 to 5 in which a plurality of bracing wires are uniformly connected to the bottom edge of the gas storage chamber, the bottom end of each bracing wire being secured to the bottom of the ambient liquid.

10. A method of underwater gas storage based on a gas storage device as claimed in any of claims 1 to 9, comprising:

immersing the gas storage cavity below the liquid level of the environmental liquid and ensuring that the environmental liquid is communicated with the internal liquid in the gas storage cavity;

when gas is filled into the gas storage cavity, the inner liquid level of the internal liquid is lowered, and the gas is sealed above the inner liquid level;

when gas is discharged from the gas storage cavity, the inner liquid level rises.

Technical Field

The invention relates to the technical field of gas storage equipment, in particular to a gas storage device and a method.

Background

The storage of gas has wide application in various fields such as life and production, for example, the storage of natural gas, the storage of medical oxygen, the storage of compressed air in a compressed air energy storage power station, and the like.

Conventional gas storage stores both gaseous storage and liquefied storage. The difficulty of the gaseous gas storage technology is low, and the gaseous gas storage technology is convenient to directly apply, but the gas density is low, so that the defects of large gas storage occupied area and high gas storage pressure exist; meanwhile, along with the process of inflation and deflation, the pressure in the gas storage device can rise or fall, which causes the pressure fluctuation in the process of inflation and deflation. Liquefied gas storage has the advantages of small occupied area and high storage density, but because the storage temperature of the liquefied gas is generally low, inevitable evaporation loss exists under the influence of ambient temperature; liquefied gas storage devices can maintain stable internal pressure at the expense of actively vaporizing small amounts of liquid, facilitating pressure maintenance during filling and venting, but exacerbating vaporization losses.

With the development and utilization of underwater space, people develop underwater gas storage technology. The elastic air bag is arranged at the bottom of the water, so that the low-efficiency utilization of the ground area is directly avoided; the stability of the internal pressure of the elastic air bag can be ensured by utilizing the water pressure, and the pressure fluctuation defect of gas storage is directly solved. However, the elastic airbag is complex to manufacture and high in cost, and frequent charging and discharging causes irreversible life damage to the airbag body and the supporting structure, which further aggravates the cost of the underwater airbag storage device.

Disclosure of Invention

Technical problem to be solved

The embodiment of the invention provides a gas storage device and a method, which are used for solving the problems of pressure fluctuation, large occupied area, high cost and short service life of an underwater air bag gas storage device of a conventional gas storage device.

(II) technical scheme

In order to solve the technical problem, the invention provides a gas storage device, which comprises a rigid gas storage cavity immersed in environmental liquid, wherein an inner liquid level is formed in the gas storage cavity, the inner liquid level is used for sealing gas liquid in the gas storage cavity and is positioned above the inner liquid level, the inner liquid positioned below the inner liquid level is communicated with the environmental liquid, and the inner liquid level is lifted along with the change of air pressure when the gas storage cavity is inflated or deflated.

In some embodiments, the bottom of the air storage cavity is provided with an open communication port.

In some embodiments, the open communication port is formed by surrounding the bottom end of the side wall of the air storage cavity.

In some embodiments, a bottom plate is arranged at the bottom of the air storage cavity, and at least one open communication port is arranged on the bottom plate in a penetrating manner.

In some embodiments, the total diameter of all the open communication ports is greater than one-half of the maximum hydraulic diameter of the gas storage chamber in the horizontal direction.

In some embodiments, the gas storage cavity is connected with a pipeline, one end of the pipeline is communicated with the space above the inner liquid level, and the other end of the pipeline is communicated with the outside of the environmental liquid.

In some embodiments, an airflow control valve is mounted on the pipeline.

In some embodiments, the tubing is flexible pressure tubing.

In some embodiments, the bottom edge of the gas storage cavity is uniformly connected with a plurality of pull cables, and the bottom end of each pull cable is fixed at the bottom of the environmental liquid respectively.

The invention also provides an underwater gas storage method based on the gas storage device, which comprises the following steps:

immersing the gas storage cavity below the liquid level of the environmental liquid and ensuring that the environmental liquid is communicated with the internal liquid in the gas storage cavity;

when gas is filled into the gas storage cavity, the inner liquid level of the internal liquid is lowered, and the gas is sealed above the inner liquid level;

when gas is discharged from the gas storage cavity, the inner liquid level rises.

(III) advantageous effects

The technical scheme of the invention has the following beneficial effects: the gas storage device comprises a rigid gas storage cavity immersed in environmental liquid, and gas is stored in an underwater gas storage mode, so that the ground space can be directly saved; an inner liquid level is formed in the gas storage cavity to seal gas liquid in the gas storage cavity and is positioned above the inner liquid level, the inner liquid positioned below the inner liquid level is communicated with environmental liquid, the inner liquid level is lifted along with the change of air pressure when the gas storage cavity is inflated or deflated, the gas storage cavity is matched with the rigid gas storage cavity for gas storage, the liquid can automatically enter or be discharged out of the gas storage cavity along with the inflation and deflation of compressed gas in the gas storage cavity, and the stability of the air pressure in the gas storage cavity is ensured through water pressure; the pressure inside and outside the gas storage cavity is consistent, so that the strength requirement of the gas storage cavity body is reduced, and the material cost can be effectively reduced; meanwhile, when the gas storage cavity is immersed in water, the underwater organisms can freely enter and exit the liquid space in the gas storage cavity due to the liquid communication between the inside and the outside of the gas storage cavity, and the underwater ecology is not influenced; in addition, the air storage cavity does not deform along with inflation and deflation, the service life of the air storage cavity is long, the device is simple in structure, and the processing, manufacturing and later-period operation and maintenance are simple and convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a gas storage device according to an embodiment of the present invention.

Wherein, 1, a gas storage cavity; 2. a pipeline; 3. an open communication port; 4. a pull rope.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention.

As shown in fig. 1, the gas storage device according to the present invention provided by this embodiment includes a rigid gas storage cavity 1 immersed in the environmental liquid, and the gas storage cavity 1 is configured to store gas (the stored gas is hereinafter referred to as gas) in an underwater gas storage manner, so that the floor space can be directly saved, and the wall surface of the gas storage cavity 1 is made of rigid material and does not deform along with inflation and deflation, so that the device has a long service life, a simple structure, and is easy and convenient to manufacture and maintain in the later period.

The device described in the embodiment has the advantages of simple structure, and simple and convenient processing, manufacturing and later operation and maintenance. In particular: when the gas storage cavity 1 is immersed in water, the interior of the gas storage cavity 1 is in liquid communication with the external environment, so that an inner liquid level is formed inside the gas storage cavity 1, and gas is sealed in the gas storage cavity 1 and is located above the inner liquid level. And the inside liquid that is located interior liquid level below communicates with environmental liquid, then gas storage chamber 1 is when aerifing or gassing, interior liquid level can go up and down along with the transient variation of the inside atmospheric pressure of gas storage chamber 1, and at the inflation and deflation in-process, because the lateral wall of gas storage chamber 1 is made for the rigidity material, not take place deformation along with inflating and deflating, its life is longer, environmental liquid can follow the automatic entering gas storage chamber 1 of the inflation and deflation of compressed gas in the gas storage chamber 1 or the automatic gas storage chamber 1 that discharges of inside liquid, thereby ensure to make the atmospheric pressure in the gas storage chamber 1 stable under the water conservancy pressure effect, that is to say that the inside hydraulic pressure and the external environment hydraulic pressure of gas storage chamber 1 are unanimous. And because the internal and external pressure of the gas storage cavity 1 is consistent, the strength requirement of the body of the gas storage cavity 1 is reduced, and the material cost can be effectively reduced. In addition, when the gas storage cavity 1 is immersed in water, because the liquid inside and outside the gas storage cavity 1 is communicated, underwater organisms can freely enter and exit the liquid space in the gas storage cavity 1, and no influence is generated on underwater ecology.

In order to maintain the pressure inside and outside the cavity wall of the gas storage cavity 1 to be consistent, the total diameter of all the open communication ports 3 is preferably larger than one half of the maximum hydraulic diameter of the gas storage cavity 1 in the horizontal direction. In order to ensure that the liquid can be communicated between the inside and the outside of the gas storage chamber 1, it is preferable that the bottom of the gas storage chamber 1 is provided with an open communication port 3. Preferably, the bottom of the gas storage cavity 1 is not provided with a bottom plate, but the bottom of the gas storage cavity 1 is directly arranged to be completely open, that is, the bottom end of the side wall of the gas storage cavity 1 is encircled to form the open communication port 3. Set up like this and make the device's structure simpler, change processing and later maintenance to guarantee that open intercommunication mouth 3 is enough big, when making the interior liquid level of gas storage chamber 1 go up and down along with pressure variation, reduce lifting resistance as far as possible.

It should be noted that, based on the better protection effect on the inside of the gas storage cavity 1, the bottom plate may be disposed at the bottom of the gas storage cavity 1, and the bottom plate is preferably disposed to be a hollow structure, for example, at least one open communication port 3 is communicated with the bottom plate, or the bottom plate is disposed to be a hollow grid structure, so long as the communication between the liquid inside the gas storage cavity 1 and the liquid outside the environment is enabled, the automatic lifting efficiency of the inner liquid level is not affected.

In this embodiment, the gas storage cavity 1 is connected with a pipeline 2, one end of the pipeline 2 is communicated with the space above the inner liquid level, and the other end of the pipeline 2 is communicated with the outside of the environmental liquid. Preferably, the pipe 2 is connected to the top of the gas storage chamber 1. In order to facilitate the control of the opening, closing and flow of the gas storage cavity 1 during the inflation and deflation processes, preferably, the pipeline 2 is provided with an airflow control valve. Pipeline 2 at 1 top of gas storage chamber in this embodiment plays the effect of intercommunication air supply or with the gas device, therefore need can bear the gas pressure when gas storage chamber 1 moves, simultaneously, because factors such as water natural flow cause the irregular swing of gas storage chamber 1, pipeline 2 should be flexible line 2 to possess certain length allowance, pipeline 2 life-span when guaranteeing the long-term irregular swing of gas storage chamber 1 is not influenced. The line 2 is therefore preferably a flexible pressure line 2.

In order to immerse the gas storage cavity 1 in the environmental liquid and guarantee that the gas storage cavity 1 can not be steadily because of the gas pressure transient variation or the gas storage cavity 1 upset that leads to when being in the no inflation state, preferably at the bottom edge evenly connected with many cables 4 of gas storage cavity 1, the bottom at environmental liquid is fixed respectively to the bottom of every cable 4.

Specifically, the following description will be given by taking liquid water as the external environment liquid of the gas storage chamber 1 as an example: the rigid gas storage cavity 1 as described in the present embodiment means: the material of the gas storage chamber 1 is preferably a rigid material or an inelastic material, such as a metal material, an alloy material, or a hard plastic material that does not react with the stored gas. Because the gas storage chamber 1 communicates with outside water through the open intercommunication mouth 3 of bottom, therefore the pressure on the cavity inner wall of gas storage chamber 1 is the same with the pressure on the outer wall, even the cavity material of gas storage chamber 1 does not have elasticity and intensity not high, can not damage the inefficacy under the influence that does not have factors such as external force striking. Preferably, the material of the cavity wall of the gas storage cavity 1 is a semitransparent material, so that the trouble of impact and the like on underwater organisms when the material is completely transparent can be avoided, and the ecological environment-friendly advantage is achieved; on the other hand, the inside of the device can be inspected from the outside, so that the device is convenient to operate and maintain. In addition, the density of the wall material is preferably smaller than that of the water body, the vertical posture can be kept by the buoyancy of the wall material when no gas exists in the gas storage cavity 1, and meanwhile, the wall material can naturally float to the water surface only by loosening the inhaul cable 4 when maintenance is needed, and special instruments are not needed for fishing; when the device is installed, the device can be submerged under water only by adding the balancing weight.

The lower part of the air storage cavity 1 is opened, namely an open type communicating port 3. The open type communication port 3 is used for communicating the inside of the gas storage cavity 1 with an external water body, so that the pressure inside and outside the gas storage cavity 1 is consistent, and the pressure stability of the gas inside the gas storage cavity 1 is ensured by utilizing the water conservancy pressure at the position. In order to facilitate processing and manufacturing and avoid the vibration of the gas storage cavity 1 caused by the outflow and inflow of water during the inflation and deflation process, the diameter (or hydraulic diameter) of the open communication port 3 should be large or not small, and if the gas storage cavity 1 is in a bell-shaped structure as shown in fig. 1, the open communication port 3 is also in a bell-shaped opening with the same diameter. The larger open communication port 3 has another advantage of facilitating the entry of maintainers or the free entry and exit of underwater organisms without affecting the underwater ecological environment. The gas storage chamber 1 may also be spherical, hemispherical, conical or of another configuration, the bell-shaped configuration being the most preferred.

Many cables 4 connect in open intercommunication mouth 3 edges and fix gas storage chamber 1 apart from submarine take the altitude, and the accessible is installed the mode that sets up the spud pile under water and is fixed with it. The arrangement of the guy cable 4 should enable the air storage cavity 1 to keep upright, and the open type communication port 3 should keep horizontal and not incline so as to ensure the maximum air storage space.

During inflation, external air source passes through pipeline 2 to the inside high-pressure gas of carrying of gas storage chamber 1, along with the increase of the gas volume of gas storage chamber 1 inside, wherein original water is discharged downwards through open intercommunication mouth 3, because the influence of the water conservancy pressure of height of locating, the pressure of gas storage chamber 1 inside is constantly unanimous with the water conservancy pressure size of height of locating, therefore the air feed pressure of external air source need not change constantly yet, only need keep with the invariable inflation pressure difference of gas storage chamber 1 position water conservancy pressure can. During the gassing, gas storage chamber 1 passes through pipeline 2 and supplies gas to outside gas appliances, and along with gaseous emission, the water is by open intercommunication mouth 3 continuously flow in gas storage chamber 1 bottom, can guarantee constantly that the gas pressure of gas storage chamber 1 inside maintains invariable based on the effect of water conservancy pressure, therefore the gas transmission pressure of pipeline 2 surface of water export also constantly keeps the constant value that is slightly less than gas storage chamber 1 internal pressure.

Based on the gas storage device, the embodiment also provides an underwater gas storage method. The method comprises the following steps:

immersing the gas storage cavity 1 below the liquid level of the environmental liquid and ensuring that the environmental liquid is communicated with the internal liquid in the gas storage cavity 1;

when gas is filled into the gas storage cavity 1, the inner liquid level of the internal liquid is lowered, and the gas is sealed above the inner liquid level by the liquid;

when gas is discharged from the gas storage chamber 1, the inner liquid level rises.

In summary, the gas storage device of the present embodiment includes the rigid gas storage cavity 1 immersed in the environmental liquid, and the gas storage is performed in an underwater gas storage manner, so that the ground space can be directly saved; an inner liquid level is formed in the gas storage cavity 1 to seal gas liquid in the gas storage cavity 1 and is located above the inner liquid level, the inner liquid located below the inner liquid level is communicated with environmental liquid, the inner liquid level is lifted along with the change of air pressure when the gas storage cavity 1 is inflated or deflated, the gas storage is carried out by matching with the rigid gas storage cavity 1, the liquid can automatically enter or be discharged out of the gas storage cavity 1 along with the inflation and deflation of compressed gas in the gas storage cavity 1, and the stability of the air pressure in the gas storage cavity 1 is ensured through water pressure; because the internal pressure and the external pressure of the gas storage cavity 1 are consistent, the strength requirement of the body of the gas storage cavity 1 is reduced, and the material cost can be effectively reduced; meanwhile, when the gas storage cavity 1 is immersed in water, underwater organisms can freely enter and exit the liquid space in the gas storage cavity 1 due to the liquid communication between the inside and the outside of the gas storage cavity 1, and no influence is generated on underwater ecology; in addition, the air storage cavity 1 does not deform along with air charging and discharging, the service life is longer, the device has a simple structure, and the processing, the manufacturing and the later operation and maintenance are simple and convenient

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.