Novel hydrogen discharging column

Abstract

The utility model discloses a novel hydrogen discharging column. The novel hydrogen discharging column comprises a hydrogen conveying path, the hydrogen conveying path comprises a first hydrogen inlet branch, a second hydrogen inlet branch and a merging main path, the first hydrogen inlet branch is provided with a first hydrogen inlet connected with an external hydrogen source, and the second hydrogen inlet branch is provided with a second hydrogen inlet communicated with the external hydrogen source; the first hydrogen inlet branch and the second hydrogen inlet branch are both connected to the combined main path, the combined main path is provided with a hydrogen outlet, the hydrogen outlet is used for being connected with hydrogen storage equipment or hydrogen using equipment, and at least one of the first hydrogen inlet branch, the second hydrogen inlet branch and the combined main path is provided with a hydrogen pressure reducing valve. The novel hydrogen discharging column disclosed by the utility model can be used for directly and uninterruptedly supplying hydrogen to hydrogen using equipment.

Description

Technical Field

[0001] The present application relates to the field of hydrogen energy technology, and in particular to a novel hydrogen unloading column. Background Art

[0002] A hydrogen unloading column, also known as a hydrogen unloading column, is a device used to unload hydrogen transported by a bundle hydrogen transporter into a hydrogen refueling station for storage. Existing hydrogen unloading columns usually mainly include a hydrogen unloading pipeline and a purge replacement pipeline. The hydrogen unloading pipeline is used to unload hydrogen into a storage tank in a hydrogen refueling station, and the purge replacement pipeline is used to purge the hydrogen unloading pipeline before or after hydrogen unloading. However, existing hydrogen unloading columns cannot achieve pressure adjustment and usually cannot be directly used for low-pressure hydrogen equipment at the back end; moreover, each time the connection with the external gas source is switched, the equipment needs to be shut down and restarted after the connection is completed, which makes it impossible to achieve uninterrupted use of hydrogen equipment.

[0003] Based on this, it is necessary to propose a technical solution to overcome the shortcomings of the existing technology. Utility Model Content

[0004] In order to overcome the defects of the prior art, the present application proposes a novel hydrogen unloading column, which can realize direct and uninterrupted hydrogen supply to hydrogen-using equipment.

[0005] The present application is achieved through the following technical solution: a novel hydrogen unloading column, comprising a hydrogen delivery path, wherein the hydrogen delivery path comprises a first hydrogen inlet branch, a second hydrogen inlet branch and a merged main path, wherein the first hydrogen inlet branch is provided with a first hydrogen inlet port connected to an external hydrogen source, and the second hydrogen inlet branch is provided with a second hydrogen inlet port connected to an external hydrogen source, both the first hydrogen inlet branch and the second hydrogen inlet branch are connected to the merged main path, and the merged main path is provided with a hydrogen outlet port, which is used to connect a hydrogen storage device or a hydrogen-using device, and a hydrogen pressure reducing valve is provided on at least one of the first hydrogen inlet branch, the second hydrogen inlet branch and the merged main path.

[0006] As a further improved technical solution, a hydrogen intake check valve is provided on the first hydrogen intake branch and the second hydrogen intake branch respectively to prevent the hydrogen intake of the first hydrogen intake branch and the second hydrogen intake branch from affecting each other.

[0007] As a further improved technical solution, the hydrogen pressure reducing valve is arranged on the merged main line.

[0008] As a further improved technical solution, the hydrogen unloading column includes a purge replacement path and a pneumatic valve instrument air path, wherein the purge replacement path and the pneumatic valve instrument air path are connected to the same external air source.

[0009] As a further improved technical solution, the external gas source is a nitrogen source.

[0010] As a further improved technical solution, a nitrogen pressure reducing valve and a solenoid valve are provided on the air path of the pneumatic valve instrument.

[0011] As a further improved technical solution, a pneumatic valve driven on and off by the pneumatic valve instrument air circuit is connected to the merged main circuit.

[0012] As a further improved technical solution, the purge replacement path is connected to the first hydrogen inlet branch and the second hydrogen inlet branch via a purge one-way valve and a manual valve respectively.

[0013] As a further improved technical solution, the hydrogen unloading column also includes a high-pressure discharge path connected to the upstream of the hydrogen pressure reducing valve and a low-pressure discharge path connected to the downstream of the hydrogen pressure reducing valve, a high-pressure safety valve being provided on the high-pressure discharge path, and a low-pressure safety valve being provided on the low-pressure discharge path.

[0014] As a further improved technical solution, the hydrogen unloading column also includes a high-pressure manual needle valve circuit arranged in parallel with the high-pressure discharge circuit, and a low-pressure manual needle valve circuit arranged in parallel with the low-pressure discharge circuit, and the high-pressure discharge circuit, the high-pressure manual needle valve circuit, the low-pressure discharge circuit and the low-pressure manual needle valve circuit are all connected to the discharge main pipe.

[0015] The novel hydrogen unloading column provided in the present application comprises a hydrogen transport path having two hydrogen inlet branches and a combined main path, at least one of the two hydrogen inlet branches and the combined main path is provided with a hydrogen pressure reducing valve, by providing the hydrogen pressure reducing valve, pressure regulation can be performed to achieve direct application of high-pressure hydrogen to low-pressure hydrogen-using equipment, thereby expanding the application scenarios, and at the same time, seamless switching of hydrogen supply can be achieved through the two hydrogen inlet branches to ensure uninterrupted use of back-end hydrogen-using equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a system block diagram of an embodiment of a hydrogen unloading column of the present application.

[0017] Figure 2 It is a structural schematic diagram of an embodiment of a hydrogen unloading column of the present application.

[0018] The accompanying drawings are marked as follows: 100-hydrogen gas unloading column; 1-first hydrogen inlet branch; 11-first break valve; 12-first pressure sensor; 13-first hydrogen inlet check valve; 14-first manual valve; 2-second hydrogen inlet branch; 21-second break valve; 22-second pressure sensor; 23-second hydrogen inlet check valve; 24-second manual valve; 3-merging main road; 31-filter; 32-flow meter; 33-pneumatic valve; 34-hydrogen pressure reducing valve; 3 5-third pressure sensor; 36-third manual valve; 41-high-pressure manual needle valve; 42-high-pressure safety valve; 43-low-pressure manual needle valve; 44-low-pressure safety valve; 5-purge replacement circuit; 51-first purge check valve; 52-second purge check valve; 53-fourth manual valve; 54-fifth manual valve; 6-pneumatic valve instrument air circuit; 61-nitrogen pressure reducing valve; 62-solenoid valve; 7-controller; 10-gas unloading column body; 20-nitrogen cylinder group. DETAILED DESCRIPTION

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation methods of the present application are now described in detail with reference to the accompanying drawings.

[0020] The technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0021] See also Figure 1 and Figure 2 As shown, the present application provides a novel hydrogen unloading column 100, which includes a hydrogen delivery path. The hydrogen delivery path includes a first hydrogen inlet branch 1, a second hydrogen inlet branch 2 and a merging main path 3, wherein the first hydrogen inlet branch 1 is provided with a first hydrogen inlet connected to an external hydrogen source, the second hydrogen inlet branch 2 is provided with a second hydrogen inlet connected to an external hydrogen source, the first hydrogen inlet branch 1 and the second hydrogen inlet branch 2 are both connected to the merging main path 3, the merging main path 3 is provided with a hydrogen outlet, and the hydrogen outlet is used to connect a hydrogen storage device or a hydrogen-using device, and at least one of the first hydrogen inlet branch 1, the second hydrogen inlet branch 2 and the merging main path 3 is provided with a hydrogen pressure reducing valve 34.

[0022] The novel hydrogen unloading column 100 provided in the present application comprises a hydrogen transport path having two hydrogen inlet branches and a merging main path 3, and at least one of the two hydrogen inlet branches and the one merging main path 3 is provided with a hydrogen pressure reducing valve 34. By providing the hydrogen pressure reducing valve 34, pressure regulation can be performed to achieve direct application of high-pressure hydrogen to low-pressure hydrogen-using equipment or low-pressure hydrogen storage equipment, thereby expanding the application scenarios. At the same time, seamless switching of hydrogen supply can be achieved through the two hydrogen inlet branches to ensure uninterrupted use of the back-end hydrogen-using equipment.

[0023] In some embodiments, the external hydrogen source connected to the first hydrogen inlet and the second hydrogen inlet can be a hydrogen storage bottle on a tube bundle hydrogen transport vehicle, a hydrogen storage device in a hydrogen refueling station, or hydrogen directly produced by a hydrogen production device. When the external hydrogen source connected to one of the two hydrogen inlet branches is about to run out, the other branch is switched to supply hydrogen to ensure an uninterrupted supply of hydrogen, so that the back-end hydrogen-using equipment can be used uninterruptedly.

[0024] In some embodiments, the hydrogen outlet may be connected to a hydrogen storage device, for example, the first or second hydrogen inlet is connected to a hydrogen storage bottle on a bundle hydrogen transport vehicle, and the hydrogen outlet is connected to a hydrogen storage device at a hydrogen refueling station, which is an application scenario in which hydrogen is discharged into a hydrogen refueling station. In other embodiments, the hydrogen outlet is connected to a low-pressure hydrogen device, such as a hydrogen power generation device, and the external hydrogen source connected to the first and second hydrogen inlets may be one or more of a hydrogen storage bottle on a bundle hydrogen transport vehicle, a hydrogen storage device in a hydrogen refueling station, or a hydrogen production device; this is a direct application of high-pressure hydrogen to a low-pressure hydrogen device or a low-pressure hydrogen storage device.

[0025] See also Figure 1 As shown, in this embodiment, the hydrogen pressure reducing valve 34 is arranged on the merged main road 3; thus, the pressure regulation of high-pressure hydrogen can be achieved through a hydrogen pressure reducing valve 34. Of course, in another embodiment, hydrogen pressure reducing valves 34 can also be respectively arranged on the two hydrogen inlet branches, so as to control the pressure reduction respectively before the two hydrogen inlet branches are merged into the merged main road 3. In another embodiment, the hydrogen pressure reducing valve 34 can also be arranged only on one of the first hydrogen inlet branch 1 and the second hydrogen inlet branch 2, so that the hydrogen inlet branch with the hydrogen pressure reducing valve 34 is used as the hydrogen supply path of the low-pressure hydrogen equipment.

[0026] Furthermore, the first hydrogen inlet branch 1 is provided with a first break valve 11, a first pressure sensor 12, a first hydrogen inlet check valve 13 and a first manual valve 14 in sequence from the first hydrogen inlet to the hydrogen outlet. The second hydrogen inlet branch 2 is similar to the first hydrogen inlet branch 1 in composition, that is, the second hydrogen inlet branch 2 is provided with a second break valve 21, a second pressure sensor 22, a second hydrogen inlet check valve 23 and a second manual valve 24 in sequence from the second hydrogen inlet to the hydrogen outlet. Since the first hydrogen inlet branch 1 and the second hydrogen inlet branch 2 are provided with hydrogen inlet check valves 13 and 14 respectively, the hydrogen inlet of the first hydrogen inlet branch 1 and the second hydrogen inlet branch 2 can be prevented from affecting each other, that is, the hydrogen in the first hydrogen inlet branch 1 will not be transported to the second hydrogen inlet, and the hydrogen in the second hydrogen inlet branch 2 will not be transported to the first hydrogen inlet, so that the two do not affect each other, ensuring uninterrupted hydrogen supply at the back end.

[0027] The first hydrogen inlet branch 1 and the second hydrogen inlet branch 2 are connected to the combined main path 3 after the first manual valve 14 and the second manual valve 24. The combined main path 3 is provided with a filter 31, a flow meter 32, a pneumatic valve 33, a hydrogen pressure reducing valve 34, a third pressure sensor 35 and a third manual valve 36. The filter 31 is used to filter hydrogen to ensure the purity of hydrogen entering the low-pressure hydrogen equipment from the hydrogen outlet; the flow meter 32 is used to monitor the hydrogen delivery volume; the pneumatic valve 33 is used to control the on-off of the hydrogen delivery path; the third pressure sensor 35 is used to detect the pressure at the low-pressure application end; the third manual valve 36 is used to manually disconnect the hydrogen delivery path in an emergency or failure situation to ensure safety in use.

[0028] The pneumatic valve 33 is driven by a driving airflow to achieve on-off switching or adjustment of the opening, and the airflow used to drive the pneumatic valve 33 is also called the pneumatic valve instrument air. In the present embodiment, the hydrogen unloading column 100 also includes a purge replacement path 5 and a pneumatic valve instrument air path 6, wherein the purge replacement path 5 and the pneumatic valve instrument air path 6 are connected to the same external air source. In the present embodiment, the external air source is a nitrogen source, which is used to purge the hydrogen delivery path through the purge replacement path 5 when necessary. In the embodiment of the present application, the pneumatic valve instrument air path 6 and the purge replacement path 5 are connected to the same external air source, which avoids the problem of large space occupation and high equipment cost caused by the separate setting of the driving air source for the pneumatic valve instrument air path 6. Compared with the prior art, which requires a separate compressed air circuit as the instrument air for the pneumatic valve, the pneumatic valve instrument air circuit 6 in the embodiment of the present application is also connected to the nitrogen source for purging and replacement, so that the nitrogen source can be used as both the purging and replacement airflow and the instrument air, reducing the setting of components such as air compressors and minimizing unnecessary layout space. Figure 2As shown, in one embodiment, the hydrogen unloading column 100 includes an unloading column body 10 and a nitrogen bottle group 20 in terms of structural layout, which has a simple structure and occupies a small space. The nitrogen bottle group 20 can be arranged outside the unloading column body 10 to facilitate the replacement of the nitrogen bottle or the addition of nitrogen.

[0029] In this embodiment, the purge replacement path 5 is connected to the first hydrogen inlet branch 1 and the second hydrogen inlet branch 2 through a purge check valve and a manual valve, respectively. In this embodiment, the purge check valve includes a first purge check valve 51 and a second purge check valve 52, and the purge replacement path 5 is connected between the first purge check valve 51 and the second purge check valve 52. Specifically, the purge replacement path 5 is connected between the first break valve 11 and the first hydrogen inlet check valve 13 of the first hydrogen inlet branch 1 through the first purge check valve 51 and the fourth manual valve 53 to purge and replace the first hydrogen inlet branch 1 and the merged main path 3; the purge replacement path 5 is connected between the second break valve 21 and the second hydrogen inlet check valve 23 of the second hydrogen inlet branch 2 through the second purge check valve 52 and the fifth manual valve 54 to purge and replace the second hydrogen inlet branch 2 and the merged main path 3. In this embodiment, a nitrogen pressure reducing valve 61 and a solenoid valve 62 are provided on the pneumatic valve instrument air path 6. The nitrogen pressure reducing valve 61 is used to adjust the nitrogen pressure to drive the pneumatic valve 33, and the solenoid valve 62 is used to control the on and off of the pneumatic valve instrument air path 6. The pneumatic valve instrument air path 6 is connected to the pneumatic valve 33, and the pneumatic valve 33 is connected to the combined main path 3, and is driven by the pneumatic valve instrument air path 6 to connect or disconnect the hydrogen delivery path.

[0030] Further, the hydrogen unloading column 100 also includes a high-pressure discharge path connected to the upstream of the hydrogen pressure reducing valve 34 and a low-pressure discharge path connected to the downstream of the hydrogen pressure reducing valve 34, the high-pressure discharge path is provided with a high-pressure safety valve 42, and the low-pressure discharge path is provided with a low-pressure safety valve 44. In one embodiment, the connection point between the high-pressure discharge path and the merged main path 3 is located between the filter 31 and the flow meter 32, and the connection point between the low-pressure discharge path and the merged main path 3 is located between the hydrogen pressure reducing valve 34 and the third pressure sensor 35. Further, in order to avoid the failure of the high-pressure safety valve 42 and the low-pressure safety valve 44 affecting the discharge, the hydrogen unloading column 100 also includes a high-pressure manual needle valve path arranged in parallel with the high-pressure discharge path, and a low-pressure manual needle valve path arranged in parallel with the low-pressure discharge path, the high-pressure manual valve needle path is provided with a high-pressure manual valve needle, which can be manually turned on to achieve discharge, and the low-pressure manual valve needle path is provided with a low-pressure manual valve needle, which can be manually turned on to achieve discharge. The high-pressure discharge path, the high-pressure manual needle valve path, the low-pressure discharge path and the low-pressure manual needle valve path are all connected to the discharge main pipe.

[0031] The pressure sensors and components such as valves that can be controlled by electrical signals mentioned above are all electrically connected to the controller 7 to be controlled by the controller 7 .

[0032] From the above description of the specific embodiments, it can be seen that the new type of hydrogen unloading column 100 provided in the present application includes a hydrogen delivery path having two hydrogen inlet branches and a merging main path 3, and at least one of the two hydrogen inlet branches and the one merging main path 3 is provided with a hydrogen pressure reducing valve 34. By setting the hydrogen pressure reducing valve 34, pressure regulation can be performed to realize the direct application of high-pressure hydrogen to low-pressure hydrogen equipment, thereby expanding the application scenarios. At the same time, seamless switching of hydrogen supply can be achieved through the two hydrogen inlet branches to ensure uninterrupted use of the back-end hydrogen equipment.

[0033] The present application is described by several specific embodiments, and those skilled in the art should understand that various changes and equivalent substitutions can be made to the present application without departing from the scope of the present application. In addition, various modifications can be made to the present application for specific situations or specific circumstances without departing from the scope of the present use model. Therefore, the present application is not limited to the specific embodiments disclosed, but should include all implementation methods falling within the scope of the claims of the present application.

Claims

1. A novel hydrogen unloading column, comprising a hydrogen delivery path, characterized in that: The hydrogen delivery path includes a first hydrogen inlet branch, a second hydrogen inlet branch and a merged main path, the first hydrogen inlet branch is provided with a first hydrogen inlet connected to an external hydrogen source, the second hydrogen inlet branch is provided with a second hydrogen inlet connected to an external hydrogen source, the first hydrogen inlet branch and the second hydrogen inlet branch are both connected to the merged main path, the merged main path is provided with a hydrogen outlet, and the hydrogen outlet is used to connect to a hydrogen storage device or a hydrogen-using device, and at least one of the first hydrogen inlet branch, the second hydrogen inlet branch and the merged main path is provided with a hydrogen pressure reducing valve.

2. The novel hydrogen unloading column as claimed in claim 1, characterized in that: The first hydrogen inlet branch and the second hydrogen inlet branch are respectively provided with hydrogen inlet check valves to prevent the hydrogen inlet of the first hydrogen inlet branch and the second hydrogen inlet branch from affecting each other.

3. The novel hydrogen unloading column as claimed in claim 1, characterized in that: The hydrogen pressure reducing valve is arranged on the combined main line.

4. The novel hydrogen unloading column as claimed in claim 1, characterized in that: The hydrogen unloading column comprises a purge replacement path and a pneumatic valve instrument air path, wherein the purge replacement path and the pneumatic valve instrument air path are connected to the same external air source.

5. The novel hydrogen unloading column as claimed in claim 4, characterized in that: The external gas source is a nitrogen source.

6. The novel hydrogen unloading column as claimed in claim 5, characterized in that: A nitrogen pressure reducing valve and a solenoid valve are arranged on the air path of the pneumatic valve instrument.

7. The novel hydrogen unloading column as claimed in claim 4, characterized in that: A pneumatic valve driven on and off by the pneumatic valve instrument air path is connected to the combined main path.

8. The novel hydrogen unloading column as claimed in claim 4, characterized in that: The purge replacement path is connected to the first hydrogen inlet branch and the second hydrogen inlet branch through a purge one-way valve and a manual valve respectively.

9. The novel hydrogen unloading column as claimed in claim 1, characterized in that: The hydrogen unloading column also includes a high-pressure discharge path connected to the upstream of the hydrogen pressure reducing valve and a low-pressure discharge path connected to the downstream of the hydrogen pressure reducing valve. A high-pressure safety valve is arranged on the high-pressure discharge path, and a low-pressure safety valve is arranged on the low-pressure discharge path.

10. The novel hydrogen unloading column as claimed in claim 9, characterized in that: The hydrogen unloading column also includes a high-pressure manual needle valve circuit arranged in parallel with the high-pressure discharge circuit, and a low-pressure manual needle valve circuit arranged in parallel with the low-pressure discharge circuit. The high-pressure discharge circuit, the high-pressure manual needle valve circuit, the low-pressure discharge circuit and the low-pressure manual needle valve circuit are all connected to the discharge main pipe.

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