CN219796912U - Filling system and hydrogenation column - Google Patents

Abstract

The utility model discloses a filling system and a hydrogenation column. The charging system comprises a charging pipeline, wherein a first interface for connecting a compressor, a hydrogen inlet pipeline, a first switch, a hydrogen outlet pipeline and a second interface for connecting a tube bundle vehicle are sequentially connected in series in the charging pipeline; a second switch is arranged at the first interface or at a position close to the first interface in the hydrogen inlet pipeline; and a third switch is arranged at the second interface or at a position close to the second interface in the hydrogen outlet pipeline. The utility model controls the on-off of the pipelines at different positions through the switches at different positions, thereby not only being convenient to operate, but also being beneficial to avoiding the waste of hydrogen and simultaneously avoiding the impurity generated in the air entering the pipelines. And the elements and connecting pipelines in the filling system and the hydrogenation column are simple in arrangement, low in failure rate and high in practicability.

Description

Filling system and hydrogenation column

Technical Field

The utility model relates to the technical field of new energy, in particular to a filling system and a hydrogenation column provided with the filling system.

Background

Along with the development planning of the hydrogen energy which is successively sent out from each place, the development speed of the hydrogen energy industry is gradually accelerated, and the hydrogen energy in China accounts for 10% of the energy system by the year 2050. At present, the number of hydrogen adding stations in China steadily increases, the distance between the hydrogen adding stations and a hydrogen manufacturing plant is relatively long, hydrogen is transported by a tube bundle vehicle, and the hydrogen transported in the tube bundle vehicle is sourced from the filling of a hydrogen adding column.

Disclosure of Invention

Therefore, the utility model aims to provide a charging system and a charging column provided with the charging system, wherein the charging pipeline of the charging system is controlled to be on-off by switches at different positions, so that the charging system is convenient to operate, is beneficial to avoiding hydrogen waste, and can also avoid impurities in the air entering pipeline.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the charging system comprises a charging pipeline, wherein a first interface for connecting a compressor, a hydrogen inlet pipeline, a first switch, a hydrogen outlet pipeline and a second interface for connecting a tube bundle vehicle are sequentially connected in series in the charging pipeline;

a second switch is arranged at the position of the first interface or the position close to the first interface in the hydrogen inlet pipeline;

and a third switch is arranged at the position of the second interface or the position close to the second interface in the hydrogen outlet pipeline.

Optionally, in the above-mentioned filling system, any one or more of a filter, a first check valve, and a flow meter is further provided in the hydrogen inlet pipe.

Optionally, in the above filling system, the method further includes:

the first external pipeline is connected with the hydrogen outlet pipeline and is provided with a third interface for connecting a diffusing tower pipeline;

and/or a second external pipeline, wherein the second external pipeline is connected with the hydrogen outlet pipeline and is provided with a fourth interface for connecting a nitrogen purging pipeline.

Optionally, in the above filling system, a first flow rate adjusting valve and a second check valve are provided in the first external connection pipe.

Optionally, in the above filling system, a second flow rate adjusting valve and a third check valve are provided in the second external connection pipe.

Optionally, in the above filling system, a safety valve and a pressure sensor are further disposed in the hydrogen outlet pipe.

Optionally, in the above filling system, a fourth switch and a pressure gauge are further disposed in the hydrogen outlet pipeline.

Optionally, in the above filling system, the first switch is a normally closed shut-off valve;

and/or, the second switch is a normally open ball valve;

and/or, the third switch is a quick connector.

A hydrogenation column integrally provided with a packing system as described hereinabove.

Optionally, the hydrogenation column is also provided with a scram button and/or a hydrogen detector.

According to the technical scheme, in the filling system and the hydrogen filling column, the on-off of pipelines at different positions is controlled through the switches at different positions, so that the operation is convenient, the waste of hydrogen is avoided, and meanwhile, impurities generated in the air entering the pipelines can be avoided. And the elements and connecting pipelines in the filling system and the hydrogenation column are simple in arrangement, low in failure rate and high in practicability.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a hydrogen filling system according to an embodiment of the present utility model.

Wherein:

1-a second switch, 2-a filter, 3-a first check valve, 4-a flow meter,

5-a first switch, 6-a plug, 7-a safety valve, 8-a pressure sensor,

9-fourth switch, 10-first flow regulating valve, 11-pressure gauge,

12-second check valve, 13-third check valve, 14-second flow regulating valve,

15-snap-off valve, 16-hose, 17-third switch, 18-emergency stop button, 19-hydrogen detector,

l1-hydrogen charging pipeline, L11-hydrogen inlet pipeline, L12-hydrogen outlet pipeline,

l2-a first external pipeline, L3-a second external pipeline,

n1-first interface, N2-second interface, N3-third interface, N4-fourth interface.

Detailed Description

The embodiment of the utility model provides a filling system and a filling column provided with the filling system, wherein the filling pipeline of the filling system is controlled to be on-off by switches at different positions, so that the filling system is convenient to operate, is beneficial to avoiding hydrogen waste, and can also avoid impurities in the air entering pipeline.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, a charging system provided in a first embodiment of the present utility model includes a charging pipeline L1, wherein a first interface N1, a hydrogen inlet pipeline L11, a first switch 5, a hydrogen outlet pipeline L12, and a second interface N2 are sequentially connected in series in the charging pipeline L1. The first interface N1 is used for connecting a compressor, the second interface N2 is used for connecting a tube bundle vehicle, the second switch 1 is arranged at the position of the first interface N1 or the position close to the first interface N1 in the hydrogen inlet pipeline L11, and the third switch 17 is arranged at the position of the second interface N2 or the position close to the second interface N2 in the hydrogen outlet pipeline L12.

In this charging system, the on-off of the pipeline can be controlled by the first switch 5, and the charging pipeline L1 can be divided into two parts by the first switch 5: the part located at the upstream of the first switch 5 is a hydrogen inlet pipeline L11 close to the gas inlet end (i.e. the first interface N1) of the hydrogen charging pipeline; the part located downstream of the first switch 5 is a hydrogen outlet line L12 near the outlet end (i.e. the second port N2) of the hydrogen charging line. At least the second switch 1 is provided in the hydrogen inlet line L11, and at least the third switch 17 is provided in the hydrogen outlet line L12. Therefore, the on-off of pipelines at different positions can be controlled through the switches at different positions, the operation is convenient, the waste of hydrogen is avoided, and meanwhile, impurities generated in the air entering pipelines can be avoided.

Specifically, the second switch 1 can control the on-off of the hydrogen inlet pipeline L11, that is, the second switch 1 can conveniently control the opening and closing of the inlet end of the hydrogen charging pipeline. For example, in the hydrogen charging process, if an emergency occurs in the hydrogen inlet pipeline L11 or the compressor, or when the connection between the compressor and the first interface N1 needs to be checked, or when the compressor needs to be temporarily turned off, or when the compressor needs to be overhauled or replaced, the second switch 1 can control the closing of the gas inlet end of the hydrogen inlet pipeline. At this time, because the second switch 1 is close to the first interface N1, not only convenient operation is to when breaking the connection of first interface N1 and compressor, can seal the residual hydrogen in the hydrogen filling pipeline L1 in the pipeline, avoid the hydrogen in the pipeline to overflow and take place danger, also can avoid the air to get into producing impurity in the pipeline simultaneously.

In the preferred embodiment, a hose 16 is provided in the hydrogen outlet line L12, and a quick connector for connecting the tube bundle vehicle is provided at the tail end of the hose 16. At this time, the quick connector is the third switch 17 described above. When the quick connector is connected with the tube bundle vehicle, the hydrogen outlet pipeline L12 is communicated with the tube bundle vehicle; when the quick connector is disconnected from the tube bundle vehicle, the quick connector is automatically closed, namely the second connector N2 of the hydrogen outlet pipeline L12 is automatically closed. Therefore, the on-off of the hydrogen outlet pipeline L12 can be controlled through the third switch 17, the operation is convenient, residual hydrogen in the hydrogen charging pipeline L1 can be sealed in the pipeline when the hydrogen outlet pipeline L12 is disconnected with the tube bundle vehicle, the danger of hydrogen overflow in the pipeline is avoided, and meanwhile, impurities generated in the air entering the pipeline can be avoided.

In a preferred embodiment, the second switch 1 is a normally open switch, such as a normally open ball valve; the first switch 5 is a normally closed cut-off valve, such as a pneumatic cut-off valve or an electromagnetic cut-off valve, and the pneumatic cut-off valve can control the on-off of the hydrogen charging pipeline through instrument wind gas so as to achieve the effect of remote automatic control.

In a preferred embodiment, any one or more of the filter 2, the first check valve 3, and the flow meter 4 is further provided in the hydrogen inlet line L11. Wherein the filter 2 is used for filtering impurities in the hydrogen coming out of the compressor; the first check valve 3 has a one-way conduction function and is used for preventing the gas in the pipeline from flowing back; the flow meter 4 is used to meter the flow of hydrogen in the charging line L1.

In the preferred embodiment, the hydrogen outlet pipe L12 is further provided with a breaking valve 15, and the breaking valve 15 can be used to prevent the hydrogen leakage caused by accidental breaking of the hydrogen charging pipe, so as to avoid danger. For example, during the hydrogen charging process, if an emergency occurs in the hydrogen outlet pipe L12 or the tube bundle vehicle, or the hose 16 is pulled by the outside, the hydrogen outlet pipe L2 can be rapidly closed by the stretch-break valve 15. Thus, the stretch-break valve 15 is normally inactive when the filling system is operating normally.

During implementation, the charging system is further provided with a first external pipeline L2, the first external pipeline L2 is connected with the hydrogen outlet pipeline L12, and a third interface N3 for connecting a diffusion tower pipeline is arranged, so that gas in the charging pipeline L1 can be diffused through the diffusion tower pipeline.

Specifically, as shown in fig. 1, one end of the first external pipeline L2 is connected to the hydrogen storage pipeline L12, and the other end is provided with a third port N3 for connecting a bleeding tower pipeline. Further, the first external pipe L2 is provided with a first flow rate adjustment valve 10 and a second check valve 12. The first flow control valve 10 may be a needle valve or other component having the same or similar function for controlling the flow of gas during the bleed; the second check valve 12 has a function of unidirectional conduction, and can control the direction of the air flow to avoid the air backflow. In addition, a standby interface is reserved in the first external pipeline L2, and plugging is performed through a detachable plug 6.

Further, a second external pipeline L3 is further provided in the charging system, and the second external pipeline L3 is connected with the hydrogen outlet pipeline L12, and a fourth interface N4 for connecting a nitrogen purging pipeline is provided, so that nitrogen purging can be performed on the charging pipeline L1.

Specifically, as shown in fig. 1, one end of the second external pipeline L3 is connected to the above-mentioned hydrogen inlet pipeline L11 and the hydrogen outlet pipeline L12 respectively in two branches, and the other end is provided with a fourth interface N4 for connecting the diffusion tower pipeline. Also, a second flow rate adjusting valve 14 and a third check valve 13 are provided in the second outside pipe L3. The second flow control valve 14 may be a needle valve or other component having the same or similar function for controlling the flow of gas during the nitrogen purge; the third check valve 13 has a function of unidirectional conduction, and can control the direction of the air flow to avoid the air backflow.

In order to further optimize the above technical solution, as shown in fig. 1, a safety valve 7 and a pressure sensor 8 are further provided in the hydrogen outlet line L12 of the hydrogen charging system. The safety valve 7 is used for preventing the risk of the excessive pressure of the hydrogen charging pipeline, the air inlet of the safety valve is connected to the hydrogen outlet pipeline L12, and the air outlet of the safety valve is connected to the first external pipeline L2 so as to be connected to the pipeline of the diffusing tower through the first external pipeline L2; the pressure sensor 8 can monitor the gas pressure in the pipeline in real time, so that warning or emergency suspension can be timely sent out when the gas pressure is too high, the overpressure protection function is achieved, and the safety of the filling system is improved. Preferably, the pressure sensor 8 is a pressure temperature sensor capable of measuring the pressure and temperature of the hydrogen in the pipeline.

Further, as shown in fig. 1, a fourth switch 9 and a pressure gauge 11 are further arranged in the hydrogen outlet pipeline L12, and the fourth switch 9 is preferably a normally closed ball valve.

As shown in fig. 1, the first switch 5, the relief valve 7, the pressure sensor 8, the fourth switch 9, the pressure gauge 11, and the third switch 17 are sequentially connected in series. Further, the connection position of the first external connection line L2 and the hydrogen outlet line L12 and the connection position of the second external connection line L3 and the hydrogen outlet line L12 are located downstream of the fourth switch 9 except that the relief valve 7 is located upstream of the fourth switch 9.

In specific implementation, the downstream of the first switch 5 may be connected to only one hydrogen outlet pipeline L12; or, the hydrogen outlet pipeline L12 may be connected in parallel with a plurality of branches, each branch is provided with a fourth switch 9, a pressure gauge 11, a third switch 17 and a hose 16 for connecting the tube bundle vehicle, and each branch is connected with the first external pipeline L2 and the second external pipeline L3.

The embodiment of the utility model also provides a hydrogenation column, wherein the charging system is integrated in the hydrogenation column. The first, second, third and fourth interfaces N1, N2, N3 and N4 are reserved outside the hydrogenation column.

Further, a scram button 18 is provided outside the hydrogenation column. In particular, when the pressure sensor 8 detects that the pressure in the charging line L1 is too high, or other emergency conditions occur, the emergency stop button 18 can control the compressor to stop, so as to emergently stop charging.

Preferably, the hydrogenation column is further provided with a hydrogen detector 19 for detecting whether or not hydrogen leakage occurs. In particular, the hydrogen detector 19 is installed in the external environment where the hydrogen charging line L1 is located, and can give an alarm in time when hydrogen leakage occurs, notifying the worker to operate the scram button 18 in time.

In summary, the elements and the connecting pipelines in the charging system and the hydrogenation column provided by the embodiment of the utility model are simple in arrangement, low in failure rate and high in practicability. In addition, the filling system and the hydrogenation column provided by the embodiment of the utility model have the functions of nitrogen purging, hydrogen replacement, hydrogen filling (hydrogen filling), diffusing, overpressure protection, emergency stop, hydrogen leakage detection and the like, and have higher safety and intelligent degree.

In specific implementation, the specific implementation method of nitrogen purging, hydrogen replacement and hydrogen filling is as follows:

nitrogen purging: before filling hydrogen into the tube bundle vehicle, because air remains in the hydrogen filling pipeline L1, the tube bundle vehicle meets the hydrogen in a high-pressure and high-temperature environment, has a certain danger, and also influences the purity of the filled hydrogen. The charging line L1 is therefore typically purged with nitrogen to displace air trapped in the line. The specific operation method comprises the following steps: connecting a connecting pipeline (namely a nitrogen purging pipeline) of a nitrogen cylinder group to a fourth interface N4, closing a first switch 5 and a first flow regulating valve 10, opening a second flow regulating valve 14, regulating the second flow regulating valve 14 to observe the numerical change of a pressure gauge 11, closing the second flow regulating valve 14 to maintain the pressure for three minutes when the pressure reaches 0.3MPa, regulating the second flow regulating valve 10, discharging nitrogen in the pipeline into air through a second external connecting pipeline L3 and a bleeding tower pipeline, and repeating the steps for 3-5 times, wherein the air mixed in the charging pipeline L1 can be basically purged by the nitrogen.

Hydrogen substitution: after the nitrogen purging is completed, the air in the hydrogen filling pipeline L1 is basically purged, and part of nitrogen is remained, so that the purity of the hydrogen filling is improved, and the hydrogen is needed to replace the nitrogen. The specific operation method comprises the following steps: closing the first flow regulating valve 10 and the second flow regulating valve 14, opening the first switch 5 and the fourth switch 9, filling a small amount of hydrogen into the hydrogen filling pipeline L1 through a compressor connected with the first connector N1, observing the indication of the pressure gauge 11, closing the first switch 5 when the pressure reaches about 1-3MPa, maintaining the pressure for a period of time, opening the first flow regulating valve 10, discharging the pressure in the hydrogen filling pipeline L1, closing the first flow regulating valve 10, and repeating the steps for 3-5 times to finish hydrogen replacement.

Filling hydrogen: after the nitrogen purging and hydrogen replacing processes are completed, the tube bundle vehicle is filled with hydrogen, the hose 16 is connected with the tube bundle vehicle, the first flow regulating valve 10 and the second flow regulating valve 14 are closed, the second switch 1 is normally open, the second switch 5 is opened, an air outlet pipeline of the compressor is connected with the first interface N1, and the fourth switch 9 is slowly opened, so that the tube bundle vehicle can be filled with hydrogen.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The filling system is characterized by comprising a hydrogen filling pipeline (L1), wherein a first interface (N1) for connecting a compressor, a hydrogen inlet pipeline (L11), a first switch (5), a hydrogen outlet pipeline (L12) and a second interface (N2) for connecting a tube bundle vehicle are sequentially and serially arranged in the hydrogen filling pipeline (L1);

a second switch (1) is arranged at the position of the first interface (N1) or the position close to the first interface (N1) in the hydrogen inlet pipeline (L11);

a third switch (17) is arranged at the position of the second interface (N2) or the position close to the second interface (N2) in the hydrogen outlet pipeline (L12);

the first external pipeline (L2) is connected with the hydrogen outlet pipeline (L12) and is provided with a third interface (N3) for connecting a diffusing tower pipeline;

and/or a second external pipeline (L3), wherein the second external pipeline (L3) is connected with the hydrogen outlet pipeline (L12) and is provided with a fourth interface (N4) for connecting a nitrogen purging pipeline;

a snap-off valve (15) is further arranged in the hydrogen outlet pipeline (L12).

2. The filling system according to claim 1, characterized in that any one or more of a filter (2), a first check valve (3), a flow meter (4) is further provided in the hydrogen inlet line (L11).

3. The filling system according to claim 1, characterized in that a first flow regulating valve (10) and a second check valve (12) are provided in the first external line (L2).

4. The filling system according to claim 1, characterized in that a second flow regulating valve (14) and a third check valve (13) are provided in the second external line (L3).

5. Filling system according to claim 1, characterized in that a safety valve (7) and a pressure sensor (8) are also provided in the hydrogen outlet line (L12).

6. Filling system according to claim 1, characterized in that a fourth switch (9) and a pressure gauge (11) are also provided in the hydrogen outlet line (L12).

7. The filling system according to any one of claims 1 to 6, wherein the first switch (5) is a normally closed shut-off valve;

and/or, the second switch (1) is a normally open ball valve;

and/or, the third switch (17) is a quick connector.

8. A hydrogenation column, characterized in that it is integrally provided with a packing system according to any one of claims 1 to 7.

9. Hydrogenation column according to claim 8, characterized in that the hydrogenation column is provided with a scram button (18) and/or a hydrogen detector (19).