Storage tank valve heating device based on vortex tube effect

Abstract

The utility model belongs to the field of high-pressure vehicle-mounted hydrogen storage corollary equipment, and relates to a storage tank valve heating device based on a vortex tube effect, a bottle opening valve is arranged on a hydrogen storage bottle, hydrogen in the hydrogen storage bottle passes through an internal channel and penetrates through the bottle opening valve to be output into an external pipeline, and a vortex tube is arranged at the position, close to the bottle opening valve, of the external pipeline. A hot airflow outlet of the vortex tube is connected with the spiral hydrogen pipeline, and a cold airflow outlet of the vortex tube is connected with external equipment; the spiral hydrogen pipeline is arranged at the bottle neck of the hydrogen storage bottle in a surrounding mode, and the position of the spiral hydrogen pipeline corresponds to the position of the O-shaped sealing ring in the bottle neck. By means of the structure, the storage tank valve heating device based on the vortex tube effect is simple in structure, good in using effect and free of maintenance cost.

Description

Technical Field

[0001] The utility model relates to the field of high-pressure vehicle-mounted hydrogen storage supporting equipment, and in particular to a storage tank valve heating device based on the vortex tube effect. Background Art

[0002] Hydrogen fuel cell vehicles use high-pressure onboard hydrogen storage systems, with a storage pressure of 350 or 700 atmospheres. When hydrogen is discharged from high-pressure hydrogen storage cylinders, the pressure and temperature drop. Combined with the extremely low ambient operating temperature, this can cause the cylinder outlet temperature to fall below the lower operating temperature limit of the valve, leading to valve seal failure. Seal failure is currently the primary failure mode for hydrogen leaks. Summary of the Invention

[0003] The utility model provides a tank valve heating device based on the vortex tube effect, so as to solve the problem of hydrogen leakage caused by sealing ring failure proposed in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a tank valve heating device based on the vortex tube effect, a bottle mouth valve is provided on the hydrogen storage bottle, and the hydrogen in the hydrogen storage bottle passes through the internal channel and the bottle mouth valve and is output to the external pipeline. It is characterized in that: a vortex tube is provided at a position of the external pipeline near the bottle mouth valve, the hot air flow outlet of the vortex tube is connected to the spiral hydrogen pipeline, and the cold air flow outlet of the vortex tube is connected to the external equipment; the spiral hydrogen pipeline is arranged around the bottleneck of the hydrogen storage bottle, and the position of the spiral hydrogen pipeline corresponds to the position of the O-ring in the bottleneck.

[0005] Preferably, the spiral hydrogen pipeline is arranged outside the O-ring and does not contact the O-ring.

[0006] Preferably, the spiral hydrogen pipeline has more than or equal to 2 turns, more than or equal to one O-ring, the lowermost end of the spiral hydrogen pipeline is lower than the lower surface of the lowermost O-ring, and the uppermost end of the spiral hydrogen pipeline is higher than the upper surface of the uppermost O-ring.

[0007] Preferably, the hydrogen outlet of the spiral hydrogen pipeline is connected to an external device through a pipeline.

[0008] Preferably, the external device is a mixer.

[0009] Preferably, a temperature control valve is provided at the hot air flow outlet of the vortex tube.

[0010] Preferably, the compressed hydrogen in the hydrogen storage bottle enters the vortex tube from the vortex chamber of the vortex tube.

[0011] Compared with existing technologies, the present invention offers the following advantages: It utilizes the heating effect of a vortex tube under high-pressure gas conditions to heat the mouth of the hydrogen storage bottle, thereby increasing the temperature at the seal ring, improving the working conditions of the seal ring, reducing the risk of seal ring failure, and enhancing the safety of the hydrogen storage system during low-temperature operation. The present invention heats the mouth of the bottle with a short circuit, high thermal energy utilization, and a simple structure with few leakage risk points, eliminating the need for increased maintenance costs during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a working principle diagram of the vortex tube of the utility model. DETAILED DESCRIPTION

[0015] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0016] The tank valve heating device based on the vortex tube effect has a bottle mouth valve 2 on the hydrogen storage bottle 1. The hydrogen in the hydrogen storage bottle 1 is output to the external pipeline through the bottle mouth valve 2 through the internal channel. A vortex tube 3 is provided at the position of the external pipeline near the bottle mouth valve 2. The compressed hydrogen in the hydrogen storage bottle 1 enters the vortex tube 3 from the vortex chamber 3-1 of the vortex tube 3. Due to the characteristics of the vortex tube 3 itself, the gas is diverted in the vortex tube 3 and divided into two paths: hot air flow and cold air flow. A temperature control valve 8 is provided at the hot air flow outlet of the vortex tube 3. The hot air flow outlet of the vortex tube 3 is connected to the spiral hydrogen pipeline 4, and the hydrogen outlet of the spiral hydrogen pipeline 4 is connected to the external equipment through a pipeline; the cold air flow outlet of the vortex tube 3 is connected to the external equipment. The external equipment can be a mixer 7.

[0017] The spiral hydrogen pipeline 4 is arranged around the bottleneck 5 of the hydrogen storage bottle 1. The position of the spiral hydrogen pipeline 4 corresponds to the position of the O-ring 6 in the bottleneck 5. The spiral hydrogen pipeline 4 is arranged outside the O-ring 6 and does not contact the O-ring 6. The working environment of the O-ring 6 is heated by the heat of the hydrogen in the spiral hydrogen pipeline 4. Preferably, the spiral hydrogen pipeline 4 has more than 2 turns, and there is more than one O-ring 6. The lowermost end of the spiral hydrogen pipeline 4 is lower than the lower surface of the lowermost O-ring 6, and the uppermost end of the spiral hydrogen pipeline 4 is higher than the upper surface of the uppermost O-ring 6, thereby ensuring that all O-rings 6 are within the heating range.

[0018] When using:

[0019] The high-pressure hydrogen in the hydrogen storage bottle 1 is discharged through the bottle valve 2. The expansion effect of the gas will cause the temperature in the bottle to drop. The extremely low ambient temperature will cause the temperature of the O-ring 6 to be lower than the operating temperature.

[0020] High-pressure hydrogen enters the vortex tube 3 through the bottle mouth valve 2, where it is separated into a hot stream and a cold stream. A spiral hydrogen pipeline 4 is placed at the bottleneck 5 of the hydrogen storage bottle 1. The hot hydrogen flows through the spiral hydrogen pipeline 4, exchanging heat with the bottleneck 5, raising the bottleneck temperature and improving the working conditions of the O-ring 6. After the heat exchange, the hydrogen finally flows into the mixer 7, where it merges with the cold-end hydrogen flow.

[0021] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A tank valve heating device based on the vortex tube effect, wherein a hydrogen storage bottle (1) is provided with a bottle mouth valve (2), and hydrogen in the hydrogen storage bottle (1) is output to an external pipeline through an internal channel and the bottle mouth valve (2), and is characterized in that: A vortex tube (3) is provided at a position of the external pipeline near the bottle mouth valve (2); the hot air flow outlet of the vortex tube (3) is connected to the spiral hydrogen pipeline (4), and the cold air flow outlet of the vortex tube (3) is connected to an external device; the spiral hydrogen pipeline (4) is arranged around the bottleneck (5) of the hydrogen storage bottle (1), and the position of the spiral hydrogen pipeline (4) corresponds to the position of the O-type sealing ring (6) in the bottleneck (5).

2. The tank valve heating device based on the vortex tube effect according to claim 1 is characterized in that: The spiral hydrogen pipeline (4) is arranged outside the O-type sealing ring (6) and does not contact the O-type sealing ring (6).

3. The tank valve heating device based on the vortex tube effect according to claim 1 is characterized in that: The spiral hydrogen pipeline (4) has more than or equal to 2 turns, the O-ring (6) has more than or equal to one, the lowermost end of the spiral hydrogen pipeline (4) is lower than the lower surface of the lowermost O-ring (6), and the uppermost end of the spiral hydrogen pipeline (4) is higher than the upper surface of the uppermost O-ring (6).

4. The tank valve heating device based on the vortex tube effect according to claim 1 is characterized in that: The hydrogen outlet of the spiral hydrogen pipeline (4) is connected to external equipment through a pipeline.

5. The tank valve heating device based on the vortex tube effect according to claim 4 is characterized in that: The external device is a mixer (7).

6. The tank valve heating device based on the vortex tube effect according to claim 1 is characterized in that: A temperature control valve (8) is provided at the hot air flow outlet of the vortex tube (3).

7. The tank valve heating device based on the vortex tube effect according to claim 1 is characterized in that: The compressed hydrogen in the hydrogen storage bottle (1) enters the vortex tube (3) from the vortex chamber (3-1) of the vortex tube (3).

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