CN212178520U - A fixed hydrogen storage cylinder group with stable filling pressure - Google Patents

Abstract

The utility model provides a fixed hydrogen storage bottle group with stable gas filling pressure, which comprises a main input pipe and a bottle group system; the bottle group system comprises a hydrogen transmission pipe, a hydrogen output pipe and a hydrogen storage bottle, and the hydrogen transmission pipe has a One end is communicated with the main input pipe, the other end of the hydrogen transport pipe is provided with a needle valve, and the other end of the hydrogen transport pipe is connected with the hydrogen storage bottle; the hydrogen transport pipe is provided with a first A valve, a hydrogen storage check valve and a second valve, the hydrogen storage check valve is arranged between the first valve and the second valve, the hydrogen output pipe is connected to the hydrogen transport pipe, and the hydrogen The input end of the output pipe is located between the hydrogen storage check valve and the first valve; the bottle group system is provided with at least three groups, and the total input pipe is respectively connected with the three groups of the bottle group system; the utility model The new model is provided with at least three groups of hydrogen storage bottles with different hydrogen pressures, so that the process pressure is stable and the working efficiency is high when the utility model is used for hydrogenation.

Description

A fixed hydrogen storage cylinder group with stable filling pressure

technical field

The utility model relates to the technical field of hydrogen storage, in particular to a fixed hydrogen storage bottle group with stable gas filling pressure.

Background technique

The hydrogen energy industry provides hydrogen energy for fuel cells, and the supporting place is at the hydrogen refueling station. The hydrogen refueling station is used to refuel the fuel cell vehicle with hydrogen. The fuel cell vehicle technology is a kind of hydrogen as the fuel, through the fuel cell A high-efficiency, zero-emission clean vehicle technology that converts hydrogen into electricity as a power source; currently, hydrogen storage cylinders are often used in hydrogen refueling stations to store hydrogen. With the same pressure of hydrogen, the hydrogen pressure in the hydrogen storage bottle becomes lower and lower during the hydrogenation process, and the hydrogenation efficiency will become slower. It is necessary to add hydrogen to the hydrogen storage bottle to increase its pressure to improve the hydrogenation efficiency , the specific implementation is troublesome and inefficient.

Utility model content

In view of the above-mentioned defects, the purpose of this utility model is to propose a fixed hydrogen storage cylinder group with stable gas filling pressure, at least three groups of hydrogen storage cylinders with different hydrogen pressures are provided, so that the hydrogenation process pressure is stable and the working efficiency is high.

For this purpose, the utility model adopts the following technical solutions:

A fixed hydrogen storage bottle group with stable gas filling pressure, comprising a main input pipe and a bottle group system; the bottle group system includes a hydrogen transmission pipe, a hydrogen output pipe and a hydrogen storage bottle, and one end of the hydrogen transmission pipe is connected to the The main input pipe is connected, the other end of the hydrogen transmission pipe is provided with a needle valve, and the other end of the hydrogen transmission pipe is connected with the hydrogen storage bottle; the hydrogen transmission pipe is provided with a first valve, a hydrogen storage tank A check valve and a second valve, the hydrogen storage check valve is arranged between the first valve and the second valve, the hydrogen output pipe is connected to the hydrogen transmission pipe, and the input of the hydrogen output pipe The end is located between the hydrogen storage check valve and the first valve; the bottle group system is provided with at least three groups, and the main input pipe is respectively connected with the three groups of the bottle group system.

Preferably, the bottle group system is provided with three groups, including a low-pressure bottle group system, a medium-pressure bottle group system and a high-pressure bottle group system, and the low-pressure bottle group system is provided with at least three low-pressure hydrogen storage bottles; the medium-pressure bottle group system The system is provided with at least two high-pressure hydrogen storage cylinders; the high-pressure cylinder group system is provided with at least one high-pressure hydrogen storage cylinder.

Preferably, a pressure relief system is also included, the pressure relief system includes a first pressure relief pipe, a second hydrogen safety valve, a second pressure relief pipe and a second hydrogen pressure relief needle valve; the second hydrogen safety valve is provided with In the first pressure relief pipe, one end of the first pressure relief pipe is connected to the hydrogen transfer pipe, and the other end of the first pressure relief pipe is a vent; one end of the second pressure relief pipe is connected to To the first pressure relief pipe, the other end of the second pressure relief pipe is connected to the hydrogen transfer pipe, and the second hydrogen pressure relief needle valve is provided in the second pressure relief pipe.

Preferably, the hydrogen transmission pipe is provided with a hydrogen storage pressure gauge.

The beneficial effects of the present utility model:

According to the above content, the utility model proposes a fixed hydrogen storage cylinder group with stable gas filling pressure. At least three groups of the hydrogen storage cylinders with different hydrogen pressures are arranged. During the hydrogenation process, from the hydrogen storage cylinder with the low pressure to the For the hydrogen storage bottle with high pressure, the needle valve of the hydrogen storage bottle is opened in turn, so that the hydrogen pressure output from the output pipe is stable and the output efficiency is high.

Description of drawings

Fig. 1 is the schematic diagram of the bottle group system of the present invention;

Fig. 2 is the concrete schematic diagram of the bottle group system of the present invention;

3 is a schematic diagram of the overall connection of the present invention.

Among them: the main input pipe 41, the bottle group system 42, the low pressure bottle group system 4201, the medium pressure bottle group system 4202, the high pressure bottle group system 4203, the hydrogen transmission pipe 421, the first valve 4211, the hydrogen storage check valve 4212, the second Valve 4213, hydrogen output pipe 422, hydrogen storage bottle 423, needle valve 4231, pressure relief system 424, first pressure relief pipe 4241, second hydrogen safety valve 4242, second pressure relief pipe 4243, second hydrogen pressure relief needle Type valve 4244, hydrogen storage pressure gauge 425, and vent 6.

Detailed ways

The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments.

In the description of the present invention, it should be understood that orientation words such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. The orientation or positional relationship is usually based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and these orientations do not indicate and imply the indicated device unless otherwise stated. Or elements must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as a limitation on the protection scope of the present invention; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

For ease of description, spatially relative terms such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under other devices or constructions". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

As shown in Figures 1-3, a fixed hydrogen storage bottle group with stable gas filling pressure includes a main input pipe 41 and a bottle group system 42; the bottle group system 42 includes a hydrogen transfer pipe 421, a hydrogen output pipe 422 and Hydrogen storage bottle 423, one end of the hydrogen transfer pipe 421 is communicated with the main input pipe 41, the other end of the hydrogen transfer pipe 421 is provided with a needle valve 4231, and the other end of the hydrogen transfer pipe 421 is connected to the The hydrogen storage bottle 423 is connected; the hydrogen transmission pipe 421 is provided with a first valve 4211, a hydrogen storage check valve 4212 and a second valve 4213, and the hydrogen storage check valve 4212 is provided on the first valve 4211 and the second valve 4213. Between the second valve 4213, the hydrogen output pipe 422 is connected to the hydrogen delivery pipe 421, and the input end of the hydrogen output pipe 422 is located between the hydrogen storage check valve 4212 and the first valve 4211 ; The bottle group system 42 is provided with at least three groups, and the total input pipe 41 is respectively connected with the three groups of the bottle group system 42 .

Specifically, when the hydrogen storage bottle 423 needs to be filled with hydrogen, the first valve 4211, the second valve 4213 and the needle valve 4231 corresponding to the hydrogen storage bottle 423 are opened, and the hydrogen is fed from the main input pipe. The input end of 41 is input, and is input into the hydrogen storage bottle 423 after passing through the hydrogen transfer pipe 421 .

When the hydrogen storage bottle 423 is required to supply hydrogen to the outside, the needle valve 4231 of the hydrogen storage bottle 423 is opened, and the first valve 4211 is opened. 421 The hydrogen transfer pipe 421 is provided with the hydrogen storage check valve 4212, which can prevent the backflow of hydrogen, so the hydrogen cannot pass through the hydrogen transfer pipe 421, and the hydrogen will be output from the hydrogen output pipe 422, at least There are three groups of the bottle group systems 42, and the three groups of bottle group systems 42 store hydrogen with different pressures. Hydrogen can be obtained from the bottle group systems 42 with different pressures as needed. Generally, the bottle group with lower pressure is opened first. The needle valve 4231 of the system 42, the hydrogenation machine 51 obtains hydrogen, and injects the hydrogen into the vehicle. When the hydrogen pressure of the hydrogenation vehicle reaches the pressure of the hydrogen in the bottle group system 42 with a lower pressure, the lower pressure is closed. The needle valve 4231 of the bottle group system 42 opens the needle valve 4231 of the bottle group system 42 with higher pressure, and the hydrogenation system 5 injects hydrogen into the vehicle, sequentially from low pressure to high pressure. The hydrogen can be obtained from the hydrogen storage bottle 423, so that the hydrogen refueling method using the hydrogen storage system can realize the refueling method with stable pressure.

Further, the bottle group system 42 is provided with three groups, including a low-pressure bottle group system 4201, a medium-pressure bottle group system 4202 and a high-pressure bottle group system 4203, and the low-pressure bottle group system 4201 is provided with at least three of the hydrogen storage bottles. 423 ; the medium-pressure bottle set system 4202 is provided with at least two hydrogen storage bottles 423 ; the high-pressure bottle set system 4203 is provided with at least one hydrogen storage bottle 423 .

Specifically, the ratio of the number of hydrogen storage cylinders 243 in the low-pressure cylinder set system 4201, the medium-pressure cylinder set system 4202 and the high-pressure cylinder set system 4203 is 3:2:1, because during the hydrogenation process of the vehicle, all the The usage amount of the low-pressure hydrogen storage bottle 423 is the largest, so the utility model sets the quantity of the three according to a certain ratio. When the hydrogen storage bottles 423 of the three groups of systems are full, all the The hydrogen storage cylinders 23 can be reduced substantially synchronously. When the hydrogen storage cylinders 423 of one group of systems are used up, the hydrogen storage cylinders 423 of the other two groups are also basically used up. The input pipe 41 inflates the hydrogen storage bottles 423 of the three groups of systems, which effectively improves the continuity and unity of the system 42 of the bottle group.

Further, a pressure relief system 424 is also included, and the pressure relief system 424 includes a first pressure relief pipe 4241, a second hydrogen pressure relief valve 4242, a second pressure relief pipe 4243 and a second hydrogen pressure relief needle valve 4244; The second hydrogen safety valve 4242 is arranged on the first pressure relief pipe 4241, one end of the first pressure relief pipe 4241 is connected to the hydrogen transfer pipe 421, and the other end of the first pressure relief pipe 4241 is for the discharge Port 6; one end of the second pressure relief pipe 4243 is connected to the first pressure relief pipe 4241, the other end of the second pressure relief pipe 4243 is connected to the hydrogen transfer pipe 421, and the second hydrogen gas is discharged A pressure needle valve 4244 is provided in the second pressure relief pipe 4243 .

Specifically, the second hydrogen pressure relief needle valve 4244 is used to control the opening and closing of the second pressure relief pipe 4243 , and the second hydrogen safety valve 4242 is used to control the opening and closing of the first pressure relief pipe 4241 closed, the second hydrogen safety valve 4242 is set to a fixed pressure value, when the gas pressure in the hydrogen pipeline 421 reaches this pressure value, the second hydrogen safety valve 4242 will be opened, so that the The first pressure relief pipe 4241 is connected to allow hydrogen to flow from the first pressure relief pipe 4241 to the release port 6; in addition, the second hydrogen pressure relief needle valve 4244 can be manually opened to make the The second pressure relief pipe 4243 is connected, so that hydrogen flows from the second pressure relief pipe 4243 to the vent 6, and the gas pressure in the hydrogen transfer pipe 421 is lowered and adjusted; in addition, as in the hydrogen transfer pipe When there is impurity gas in 421, the second hydrogen pressure relief needle valve 4244 can also be opened to discharge the gas in the hydrogen transport pipe 421, so as to protect the safety of the main transport pipe and the gas in it, and prevent the explosion caused by the explosion. Hydrogen leak.

Further, the hydrogen transmission pipe 421 is provided with a hydrogen storage pressure gauge 425 .

Specifically, the hydrogen storage pressure gauge 425 is provided on the hydrogen transport pipe 421, and the hydrogen storage pressure gauge 425 can detect the pressure of the gas in the main transport pipe, effectively monitor the hydrogen, and improve the cost The safety and reliability of the utility model.

The technical principle of the present invention has been described above with reference to the specific embodiments. These descriptions are only for explaining the principle of the present invention, and should not be construed as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific embodiments of the present invention without creative efforts, and these methods will all fall within the protection scope of the present invention.

Claims (4)

1. A fixed hydrogen storage cylinder group with stable gas filling pressure is characterized in that: comprises a main input pipe and a bottle group system; the bottle group system comprises a hydrogen conveying pipe, a hydrogen output pipe and a hydrogen storage bottle, wherein one end of the hydrogen conveying pipe is communicated with the main input pipe, the other end of the hydrogen conveying pipe is provided with a needle valve, and the other end of the hydrogen conveying pipe is communicated with the hydrogen storage bottle; the hydrogen conveying pipe is provided with a first valve, a hydrogen storage check valve and a second valve, the hydrogen storage check valve is arranged between the first valve and the second valve, the hydrogen output pipe is communicated to the hydrogen conveying pipe, and the input end of the hydrogen output pipe is positioned between the hydrogen storage check valve and the first valve; the bottle group system is at least provided with three groups, and the main input pipe is respectively connected with the three groups of bottle group systems.

2. A fixed set of gas-filled pressure stabilized hydrogen storage cylinders according to claim 1, wherein: the bottle group system is provided with three groups, including a low-pressure bottle group system, a medium-pressure bottle group system and a high-pressure bottle group system, wherein the low-pressure bottle group system is at least provided with three low-pressure hydrogen storage bottles; the medium-pressure cylinder group system is at least provided with two high-pressure hydrogen storage cylinders; the high-pressure bottle group system is at least provided with a high-pressure hydrogen storage bottle.

3. A fixed set of gas-filled pressure stabilized hydrogen storage cylinders according to claim 1, wherein: the pressure relief system comprises a first pressure relief pipe, a second hydrogen safety valve, a second pressure relief pipe and a second hydrogen pressure relief needle valve; the second hydrogen safety valve is arranged on the first pressure relief pipe, one end of the first pressure relief pipe is communicated to the hydrogen delivery pipe, and the other end of the first pressure relief pipe is a release port; one end of the second pressure relief pipe is communicated to the first pressure relief pipe, the other end of the second pressure relief pipe is communicated to the hydrogen conveying pipe, and the second hydrogen pressure relief needle valve is arranged on the second pressure relief pipe.

4. A fixed set of gas-filled pressure stabilized hydrogen storage cylinders according to claim 1, wherein: the hydrogen conveying pipe is provided with a hydrogen storage pressure gauge.

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