Integrated gas storage bottle

Abstract

The utility model relates to the technical field of gas storage bottles, in particular to an integrated gas storage bottle which comprises a high-pressure gas storage bottle and a plurality of low-pressure gas storage bottles which are coaxially arranged, and the plurality of low-pressure gas storage bottles are sleeved on the outer side of the high-pressure gas storage bottle to form an integrated gas storage bottle which is used for providing gas sources with different pressures; the high-pressure gas storage cylinder and the plurality of low-pressure gas storage cylinders are coaxially arranged, and the plurality of low-pressure gas storage cylinders are sequentially sleeved on the high-pressure gas storage cylinder to form the integrated gas storage cylinder, so that the gas source with different pressures is provided, and the occupied area is small.

Description

Technical Field

[0001] The utility model relates to the technical field of gas storage cylinders, in particular to an integrated gas storage cylinder. Background Art

[0002] At present, gas cylinder groups are divided into 20MPa skids and 45MPa skids. When a gas source station has a low-pressure gas source, a 20MPa gas cylinder group is needed to compress the low-pressure gas source to 20MPa. When it is compressed from 20MPa to 45MPa, a 45MPa gas cylinder group is needed. When it is compressed from 45MPa to 90MPa, a 90MPa gas cylinder group needs to be set up on site. Since general gas cylinders have a single function, three sets of gas cylinder groups with different pressure levels need to be placed on site, namely the first set of 20MPa gas cylinder group, the second set of 45MPa gas cylinder group and the third set of 90MPa gas cylinder group, which increases the floor space.

[0003] Therefore, it is necessary to design a gas storage cylinder that improves the above problems. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provide an integrated gas storage cylinder.

[0005] The utility model provides an integrated gas storage cylinder, comprising a coaxially arranged high-pressure gas storage cylinder and a plurality of low-pressure gas storage cylinders, wherein the plurality of low-pressure gas storage cylinders are sleeved on the outer side of the high-pressure gas storage cylinder to form an integrated structure gas storage cylinder for providing gas sources with different pressures.

[0006] Furthermore, the low-pressure gas storage cylinders are sequentially sleeved on the outside of the high-pressure gas storage cylinders layer by layer.

[0007] Furthermore, at least the side wall thickness of the low-pressure gas storage cylinder closest to the high-pressure gas storage cylinder is the same as the side wall thickness of the high-pressure gas storage cylinder.

[0008] Furthermore, the length of the low-pressure gas storage cylinder is shorter than that of the high-pressure gas storage cylinder, and as the number of sleeve layers increases, the length of the low-pressure gas storage cylinder away from the high-pressure gas storage cylinder gradually decreases.

[0009] Furthermore, the storage volume of the low-pressure gas storage cylinder is less than or equal to the storage volume of the high-pressure gas storage cylinder.

[0010] Furthermore, the low-pressure gas storage cylinder and the high-pressure gas storage cylinder are respectively provided with independent gas inlets;

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model comprises a high-pressure gas cylinder and a plurality of low-pressure gas cylinders which are coaxially arranged. The plurality of low-pressure gas cylinders are sequentially sleeved on the high-pressure gas cylinder to form an integrated gas cylinder, which is used to provide gas sources with different pressures and occupies a small area. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following drawings are only used to illustrate and explain the present invention, and are not intended to limit the scope of the present invention, wherein:

[0014] Figure 1 : Schematic diagram of the structure of the integrated gas storage cylinder of the utility model;

[0015] Figure 2 : Structural diagram of a gas storage cylinder composed of three different pressure gas sources in the specific implementation of the utility model;

[0016] Figure 3 : Schematic diagram of the integrated gas storage cylinder group of the utility model;

[0017] In the figure: 1-high pressure gas storage cylinder, 2-first low pressure gas storage cylinder, 3-first low pressure gas storage cylinder. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution, design method and advantages of the utility model clearer, the utility model is further described in detail through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] like Figure 1-Figure 3 As shown, the utility model provides an integrated gas storage cylinder, comprising a coaxially arranged high-pressure gas storage cylinder 1 and a plurality of low-pressure gas storage cylinders, wherein the plurality of low-pressure gas storage cylinders are sleeved on the outside of the high-pressure gas storage cylinder 1 to form an integrated structure gas storage cylinder for providing gas sources of different pressures;

[0020] The low-pressure gas cylinders are sequentially sleeved on the outside of the high-pressure gas cylinder 1 layer by layer; at least the side wall thickness of the low-pressure gas cylinder closest to the high-pressure gas cylinder 1 is the same as the side wall thickness of the high-pressure gas cylinder 1;

[0021] The length of the low-pressure gas cylinder is shorter than that of the high-pressure gas cylinder 1, and as the number of layers increases, the length of the low-pressure gas cylinder away from the high-pressure gas cylinder 1 gradually decreases; the storage volume of the low-pressure gas cylinder is less than or equal to the storage volume of the high-pressure gas cylinder 1; the low-pressure gas cylinder and the high-pressure gas cylinder 1 are respectively provided with independent air inlets;

[0022] In a specific implementation, the plurality of low-pressure gas cylinders include a first low-pressure gas cylinder 3 and a second low-pressure gas cylinder 2; the first low-pressure gas cylinder 3 and the second low-pressure gas cylinder 2 are sequentially sleeved on the high-pressure gas cylinder 1 from the outside to the inside; in a specific implementation, the gas source pressure in the high-pressure gas cylinder 1 is 90MPa, the gas source pressure in the first low-pressure gas cylinder 3 is 20MPa, and the gas source pressure in the second low-pressure gas cylinder 2 is 45MPa; the side wall thickness of the first low-pressure gas cylinder 3 and the second low-pressure gas cylinder 2 is the same as the side wall thickness of the high-pressure gas cylinder 1; and the first low-pressure gas cylinder 3 and the second low-pressure gas cylinder 2 are made of the same material as the high-pressure gas cylinder 1;

[0023] It should be noted that the integrated gas cylinder used for filling from low-pressure compressed gas to high-pressure pure gas (hydrogen, nitrogen, helium, etc.) is an integrated structure gas cylinder formed by sequentially placing a plurality of low-pressure gas cylinders on a high-pressure gas cylinder 1. By setting a single gas cylinder to combine different pressure gas sources into an integrated structure gas cylinder, it is used to meet the needs of different pressure gas sources while occupying a small area.

[0024] Specific implementation process: A gas source station has a low-pressure gas source. The gas source generally has two modes of origin, one mode is transported to the station by a tube bundle vehicle, and the other mode is transported by a gas cylinder. In the embodiment, the gas source is transported to the station by a tube bundle vehicle or transported by a gas cylinder. The gas source station needs a higher level of pressure. This application is to meet the needs of gas cylinder groups with different pressure levels, while occupying a small area.

[0025] In the specific implementation, a hydrogen station is taken as an example: in the embodiment, the gas source of the 20MPa gas cylinder is transported to the station by a tube bundle vehicle. Some gas source stations require 45MPa gas cylinders and 90MPa gas cylinders for hydrogen use, which can be achieved through the first implementation scheme; in the embodiment: the hydrogen production station has a hydrogenation function. Generally, the pressure of hydrogen produced in the hydrogen production station is very low (electrolysis of water: 1.5-1.6MPa, PSA purification of hydrogen: basically around 3MPa, determined by the upstream hydrogen production pressure). It needs to be pressurized to 20MPa by a compressor first, and then supplied to the tube bundle vehicle for filling and transportation to the downstream market; the other way is led to the hydrogenation station in the gas source station through the gas cylinder for use. When it is led to the hydrogenation station, the 20MPa hydrogen needs to be pressurized to 45MPa by a compressor. In this case, a 20MPa hydrogen storage container is required at the rear end of the 20MPa compressor, and the 45M Pa requires a 45MPa hydrogen storage container for the gas application end. Similarly, 45MPa hydrogen needs to be pressurized to 90MPa by a compressor. A 45MPa hydrogen storage container is set at the rear end of the 45MPa compressor, and 90MPa requires a 90MPa hydrogen storage container for the gas application end. In this case, four places are needed to place the equipment, which can be solved in the embodiment (three coaxial gas cylinders are placed on a bottle group skid, the outer sides are connected to each other, the conveyor belt stores 20MPa, and the three inner layers store the design pressure of 45MPa). When the hydrogen filling station in the gas source station still needs 90MPa high-pressure hydrogen, three multi-layer coaxial gas cylinders are set on a bottle group skid, which only occupies one place. The innermost side of the three multi-layer coaxial gas cylinders is 90MPa, the middle layer is 45MPa, and the outermost layer is 20MPa. The outermost layers are also connected to each other. Thereby meeting the demand for gas cylinder groups with different pressure levels, and making the gas cylinder groups with different pressure levels occupy a small area.

[0026] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An integrated gas storage cylinder, characterized in that: It comprises a coaxially arranged high-pressure gas storage cylinder (1) and a plurality of low-pressure gas storage cylinders, wherein the plurality of low-pressure gas storage cylinders are sleeved on the outside of the high-pressure gas storage cylinder (1) to form an integrated structure gas storage cylinder for providing gas sources of different pressures.

2. An integrated gas storage cylinder according to claim 1, characterized in that: The low-pressure gas storage cylinders are sequentially sleeved on the outside of the high-pressure gas storage cylinder (1) layer by layer.

3. The integrated gas storage cylinder according to claim 2, characterized in that: At least the side wall thickness of the low-pressure gas storage cylinder closest to the high-pressure gas storage cylinder (1) is the same as the side wall thickness of the high-pressure gas storage cylinder (1).

4. The integrated gas storage cylinder according to claim 2, characterized in that: The length of the low-pressure gas storage cylinder is shorter than that of the high-pressure gas storage cylinder (1), and as the number of sleeve layers increases, the length of the low-pressure gas storage cylinder away from the high-pressure gas storage cylinder (1) gradually decreases.

5. The integrated gas storage cylinder according to claim 2, characterized in that: The storage volume of the low-pressure gas storage cylinder is less than or equal to the storage volume of the high-pressure gas storage cylinder (1).

6. The integrated gas storage cylinder according to claim 1, characterized in that: The low-pressure gas storage cylinder and the high-pressure gas storage cylinder (1) are respectively provided with independent gas inlets.

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