Hydrogen filling, loading and unloading integrated column and hydrogen replacement method

Abstract

The invention discloses a hydrogen filling, loading and unloading integrated column which comprises a filling pipeline, an outlet of the filling pipeline is connected with a hydrogen inlet b through a filling hose, and a manual ball valve, a first manual ball valve, a first one-way valve, a first pneumatic ball valve, a first filter, a first flowmeter and a third manual ball valve are sequentially mounted on the filling hose; an inlet of the hydrogen unloading pipeline is connected with one end of a hydrogen unloading hose of the hydrogen unloading column, and the other end of the hydrogen unloading hose is connected with a hydrogen outlet b through a fourth manual ball valve, a second filter, a second one-way valve, a second pneumatic ball valve, a first flow meter and a third manual ball valve in sequence; the first flow meter and the third manual ball valve are shared by a filling pipeline and a hydrogen discharging pipeline, and an inlet b of the filling pipeline is an outlet b of the hydrogen discharging pipeline. Functions of a hydrogenation system and a hydrogen discharging system are integrated on the integrated equipment, and the single equipment can realize filling and discharging of hydrogen in a hydrogen tube bundle vehicle; hydrogenation and hydrogen unloading functions can be simultaneously met by adopting a single flow meter and a single safety valve.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen filling and unloading integrated column, and more specifically, to a hydrogen filling and unloading integrated column and a hydrogen replacement method. Background Art

[0002] The integrated hydrogen filling and unloading column is a device for filling and discharging hydrogen from a hydrogen long tube trailer. During the hydrogen filling process, the hydrogen is compressed by a compressor and then filled into the hydrogen storage bottle on the hydrogen long tube trailer through the integrated hydrogen filling and unloading column. During the hydrogen unloading process, the hydrogen on the hydrogen long tube trailer is stored in a fixed hydrogen storage bottle group in the station after being flat-pressed or pressurized by a compressor. In the existing disclosed technology, the filling column and the hydrogen unloading column are each a single device, each having functions such as metering, safe venting, purging and replacement, and sampling, and are respectively equipped with flow meters, safe venting lines, purging and replacement lines, sampling lines, and instrument gas lines. In this way, the hydrogen filling and unloading equipment needs to be equipped with two sets of flow meters, two sets of safety valves, two sets of purging and replacement valves, two sets of sampling valves, etc. At the same time, two sets of equipment foundations in the station must also be made. An operating space must also be reserved between the filling column and the hydrogen unloading column, which increases the site area. Summary of the invention

[0003] In order to achieve these purposes and other advantages according to the present invention, on the one hand, a preferred embodiment of the present invention provides an integrated hydrogen filling and unloading column, comprising: A filling pipeline, the outlet of which is connected to the hydrogen inlet b through a filling hose, and the filling hose is sequentially installed with a first manual ball valve, a first check valve, a first pneumatic ball valve, a first filter, a first flow meter and a third manual ball valve; A hydrogen unloading pipeline, the inlet of which is connected to one end of a hydrogen unloading hose of the hydrogen unloading column, and the other end of the hydrogen unloading hose is connected to a hydrogen outlet b through a fourth manual ball valve, a second filter, a second one-way valve, a second pneumatic ball valve, a first flow meter and a third manual ball valve in sequence; The first flow meter and the third manual ball valve are common to the filling pipeline and the hydrogen unloading pipeline, and the inlet b of the filling pipeline is the outlet b of the hydrogen unloading pipeline.

[0004] Preferably, a first pressure gauge and a first pressure transmitter are connected between the first manual ball valve and the first one-way valve.

[0005] Preferably, a second pressure gauge and a second pressure transmitter are connected between the fourth manual ball valve and the second filter.

[0006] Preferably, a first needle valve is connected between the first one-way valve and the first pneumatic ball valve of the filling pipeline; and a second needle valve is connected between the fourth manual ball valve and the second filter of the hydrogen unloading pipeline.

[0007] Preferably, the first needle valve and the second needle valve are connected at their ends, and are connected to the third one-way valve and the seventh needle valve until the replacement inlet c is purged.

[0008] Preferably, a fifth needle valve is connected between the terminal connection point of the first needle valve and the second needle valve and the third one-way valve, until the leakage inspection port g.

[0009] Preferably, a fourth needle valve is connected between the second one-way valve and the second pneumatic ball valve of the hydrogen unloading pipeline, and the ends of the third needle valve and the fourth needle valve are connected, and a sixth needle valve is connected until the vent e.

[0010] Preferably, a first safety valve is connected between the second pneumatic ball valve and the first flow meter, and is connected to the rear end of the sixth needle valve until the vent e.

[0011] On the other hand, a preferred embodiment of the present invention provides a hydrogen replacement method based on the hydrogen filling and unloading integrated column, comprising the following steps: S1. When the hydrogen long tube trailer is being filled, the second pneumatic ball valve is closed, the hydrogen unloading pipeline is isolated, and the hydrogen unloading function is closed; the filling hose a2 is connected to the hydrogen tube bundle vehicle, and the seventh needle valve and the second needle valve are opened to inject nitrogen between the tube bundle vehicle and the first pneumatic ball valve; then the seventh needle valve and the second needle valve are closed, and the third needle valve and the sixth needle valve are opened to release the nitrogen; S2, repeat S1 4-6 times to complete nitrogen replacement; S3, open the valve on the compressor and the first pneumatic ball valve to inject hydrogen into the filling pipeline; open the third needle valve and the sixth needle valve to release the hydrogen; S4. Repeat S3 4-6 times to complete the hydrogen replacement.

[0012] According to a preferred embodiment of the present invention, the following steps are also included: S5. When the hydrogen long tube trailer is unloading hydrogen, the first pneumatic ball valve is closed, the filling pipeline is isolated, and the filling function is closed; the hydrogen unloading hose is connected to the hydrogen tube bundle vehicle, and the seventh needle valve and the second needle valve are opened to inject nitrogen between the tube bundle vehicle and the second pneumatic ball valve; then the seventh needle valve and the second needle valve are closed, and the fourth needle valve and the sixth needle valve are opened to release nitrogen; S6, repeat S5 4-6 times to complete nitrogen replacement; S7, open the hydrogen main valve on the hydrogen long tube trailer to inject hydrogen into the hydrogen unloading pipeline; open the fourth needle valve and the sixth needle valve to release the hydrogen; S8. Repeat S7 4-6 times to complete the hydrogen replacement.

[0013] The present invention includes at least the following beneficial effects: the present invention integrates the functions of the hydrogenation system and the hydrogenation unloading system into an integrated device, a single device can realize the filling and discharge of hydrogen in the hydrogen tube bundle vehicle, and a single flow meter and a single safety valve can simultaneously meet the functions of hydrogenation and hydrogenation unloading.

[0014] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the framework structure of the integrated hydrogen filling and unloading column in the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0018] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0019] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0020] like Figure 1 As shown, Figure 1As shown, a preferred embodiment of the present invention provides an integrated hydrogen filling and unloading column, including a filling pipeline, whose outlet is connected to the hydrogen inlet b through a filling hose a2, and the filling hose a2 is sequentially installed with a manual ball valve BV0102 (first manual ball valve 1), a one-way valve CV0102 (first one-way valve 2), a pneumatic ball valve PBV0102 (first pneumatic ball valve 3), a filter FL0102 (first filter 4), a flow meter FM0101 (first flow meter 5) and a manual ball valve BV0103 (third manual ball valve 6); A hydrogen unloading pipeline, the inlet of which is connected to one end of the hydrogen unloading hose of the hydrogen unloading column, and the other end of the hydrogen unloading hose is connected to the hydrogen outlet b through the manual ball valve BV0101 (fourth manual ball valve 9), the filter FL0101 (second filter 10), the one-way valve CV0101 (second one-way valve 11), the pneumatic ball valve PBV0101 (second pneumatic ball valve 12), the flow meter FM0101 (first flow meter 5) and the manual ball valve BV0103 (third manual ball valve 6) in sequence; The flow meter FM0101 (first flow meter 5) and the manual ball valve BV0103 (third manual ball valve 6) are common to the filling pipeline and the hydrogen unloading pipeline, and the inlet b of the filling pipeline is the outlet b of the hydrogen unloading pipeline.

[0021] A pressure gauge PG0102 (first pressure gauge 7) and a pressure transmitter PT0102 (first pressure transmitter 8) are connected between the manual ball valve BV0102 (first manual ball valve 1) and the one-way valve CV0102 (first one-way valve 2).

[0022] A pressure gauge PG0101 (a second pressure gauge 13 ) and a pressure transmitter PT0101 (a second pressure transmitter 14 ) are connected between the manual ball valve BV0101 (a fourth manual ball valve 9 ) and the filter FL0101 (a second filter 10 ).

[0023] A first needle valve (first needle valve 17) is connected between the one-way valve CV0102 (first one-way valve 2) of the filling pipeline and the pneumatic ball valve PBV0102 (first pneumatic ball valve 3); a second needle valve (second needle valve 18) is connected between the manual ball valve BV0101 (fourth manual ball valve 9) of the hydrogen unloading pipeline and the filter FL0101 (second filter 10).

[0024] The ends of needle valve NV0101 (first needle valve 17) and needle valve NV0105 (second needle valve 18) are connected, and are connected to one-way valve CV0103 (third one-way valve 15) and needle valve NV0107 (seventh needle valve 16) until the purge replacement inlet c.

[0025] A needle valve NV0108 (fifth needle valve 21 ) is connected between the end connection points of the needle valve NV0101 (first needle valve 17 ) and the needle valve NV0105 (second needle valve 18 ) and the one-way valve CV0103 (third one-way valve 15 ) until the leakage inspection port g.

[0026] A needle valve NV0102 (fourth needle valve 20) is connected between the one-way valve CV0101 (second one-way valve 11) and the pneumatic ball valve PBV0101 (second pneumatic ball valve 12) of the hydrogen unloading pipeline, and the ends of the needle valve NV0106 (third needle valve 19) and the needle valve NV0102 (fourth needle valve 20) are connected, and are connected to a needle valve NV0104 (sixth needle valve 22) until the vent e.

[0027] A safety valve PSV0101 (first safety valve 24) is connected between the pneumatic ball valve PBV0101 (second pneumatic ball valve 12) and the flowmeter FM0101 (first flowmeter 5), and is connected to the rear end of the needle valve NV0104 (sixth needle valve 22) until the venting port e.

[0028] Another embodiment provides a hydrogen replacement method based on the hydrogen filling and unloading integrated column, comprising the following steps: S1. When the hydrogen long tube trailer is being filled, the pneumatic ball valve PBV0101 (the second pneumatic ball valve 12) is closed, the hydrogen unloading pipeline is isolated, and the hydrogen unloading function is closed; the filling hose a2 is connected to the hydrogen tube bundle vehicle, and the needle valve NV0107 (the seventh needle valve 16) and the needle valve NV0105 (the second needle valve 17) are opened to inject nitrogen between the tube bundle vehicle and the pneumatic ball valve PBV0102 (the first pneumatic ball valve 3); then the needle valve NV0107 (the seventh needle valve 16) and the needle valve NV0105 (the second needle valve 17) are closed, and the needle valve NV0106 (the third needle valve 19) and the needle valve NV0104 (the sixth needle valve 22) are opened to release the nitrogen; S2, repeat S1 4-6 times to complete nitrogen replacement; S3, open the valve on the compressor and the pneumatic ball valve PBV0102 (the first pneumatic ball valve 3) to inject hydrogen into the filling pipeline; open the needle valve NV0106 (the third needle valve 19) and the needle valve NV0104 (the sixth needle valve 22) to release the hydrogen; S4. Repeat S3 4-6 times to complete the hydrogen replacement.

[0029] S5. When the hydrogen long tube trailer is unloading hydrogen, the first pneumatic ball valve is closed, the filling pipeline is isolated, and the filling function is closed; the hydrogen unloading hose a1 is connected to the hydrogen tube bundle vehicle, and the needle valve NV0107 (the seventh needle valve 16) and the needle valve NV0105 (the second needle valve 18) are opened to inject nitrogen between the tube bundle vehicle and the second pneumatic ball valve; then the needle valve NV0107 (the seventh needle valve 16) and the needle valve NV0105 (the second needle valve 18) are closed, and the needle valve NV0102 (the fourth needle valve 20) and the needle valve NV0104 (the sixth needle valve 22) are opened to release the nitrogen; S6, repeat S5 4-6 times to complete nitrogen replacement; S7, open the hydrogen main valve on the hydrogen long tube trailer, and inject hydrogen into the hydrogen unloading pipeline; open the needle valve NV0102 (the fourth needle valve 20) and the needle valve NV0104 (the sixth needle valve 22) to release the hydrogen; S8. Repeat S7 4-6 times to complete the hydrogen replacement.

[0030] The integrated hydrogen filling and unloading column of the present invention can realize functions such as hydrogenation, hydrogen unloading, nitrogen purge replacement, safe venting, hydrogen sampling and hydrogen metering. The present invention integrates the functions of the hydrogenation system and the hydrogen unloading system into an integrated device. A single device can realize the filling and discharge of hydrogen in the hydrogen bundle vehicle. A single flow meter and a single safety valve can simultaneously meet the functions of hydrogenation and unloading, reducing the number of parts and components. At the same time, the pipeline layout is more reasonable, and has the advantages of small footprint and low manufacturing cost.

[0031] Moreover, in the present invention, the filling and unloading functions share a flow meter and a safety valve, thereby reducing the manufacturing cost and the overall size of the equipment while achieving the functions.

[0032] The replacement pipeline for filling and unloading hydrogen is configured with double needle valves and one-way valves to prevent hydrogen from flowing back into the nitrogen pipeline, providing double safety protection; at the same time, the replacement pipeline for filling and unloading hydrogen shares the one-way valve and needle valve, which reduces the number of valves and saves equipment space.

[0033] A leak inspection port has been added to the replacement pipeline, so that daily inspections can be used to detect whether hydrogen has leaked into the purge replacement pipeline, further reducing the risk of high-pressure hydrogen flowing back into the nitrogen pipeline.

[0034] The venting pipeline and sampling pipeline for filling and unloading hydrogen are both equipped with double needle valves, providing double safety protection; at the same time, the venting pipeline and the sampling pipeline share the needle valve, which reduces the number of valves and saves equipment space.

[0035] Moreover, in the present invention, the filling and unloading functions share a flow meter and a safety valve, thereby reducing the manufacturing cost and the overall size of the equipment while achieving the functions.

[0036] The replacement pipeline for filling and unloading hydrogen is configured with double needle valves and one-way valves to prevent hydrogen from flowing back into the nitrogen pipeline, providing double safety protection; at the same time, the replacement pipeline for filling and unloading hydrogen shares the one-way valve and needle valve, which reduces the number of valves and saves equipment space.

[0037] A leak inspection port has been added to the replacement pipeline, so that daily inspections can be used to detect whether hydrogen has leaked into the purge replacement pipeline, further reducing the risk of high-pressure hydrogen flowing back into the nitrogen pipeline.

[0038] The venting pipeline and sampling pipeline for filling and unloading hydrogen are both equipped with double needle valves, providing double safety protection; at the same time, the venting pipeline and the sampling pipeline share the needle valve, which reduces the number of valves and saves equipment space.

[0039] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A hydrogen filling and unloading integrated column, characterized in that: include: A filling pipeline, the outlet of which is connected to the hydrogen inlet b through a filling hose, and the filling hose is sequentially installed with a first manual ball valve, a first check valve, a first pneumatic ball valve, a first filter, a first flow meter and a third manual ball valve; A hydrogen unloading pipeline, the inlet of which is connected to one end of a hydrogen unloading hose of the hydrogen unloading column, and the other end of the hydrogen unloading hose is connected to a hydrogen outlet b through a fourth manual ball valve, a second filter, a second one-way valve, a second pneumatic ball valve, a first flow meter and a third manual ball valve in sequence; The first flow meter and the third manual ball valve are common to the filling pipeline and the hydrogen unloading pipeline, and the inlet b of the filling pipeline is the outlet b of the hydrogen unloading pipeline.

2. The integrated hydrogen filling and unloading column according to claim 1, characterized in that: A first pressure gauge and a first pressure transmitter are connected between the first manual ball valve and the first one-way valve.

3. The integrated hydrogen filling and unloading column according to claim 1, characterized in that: A second pressure gauge and a second pressure transmitter are connected between the fourth manual ball valve and the second filter.

4. The integrated hydrogen filling and unloading column according to claim 1, characterized in that: A first needle valve is connected between the first one-way valve and the first pneumatic ball valve of the filling pipeline; and a second needle valve is connected between the fourth manual ball valve and the second filter of the hydrogen discharge pipeline.

5. The integrated hydrogen filling and unloading column according to claim 1, characterized in that: The first needle valve and the second needle valve are connected at their ends, and are also connected to the third one-way valve and the seventh needle valve until the purge replacement inlet c.

6. The integrated hydrogen filling and unloading column according to claim 5, characterized in that: A fifth needle valve is connected between the connecting point between the first needle valve and the second needle valve and the third one-way valve, until the leakage inspection port g.

7. The integrated hydrogen filling and unloading column according to claim 6, characterized in that: A fourth needle valve is connected between the second one-way valve and the second pneumatic ball valve of the hydrogen unloading pipeline, and the third needle valve is connected to the ends of the fourth needle valve, and is also connected to a sixth needle valve until the venting port e.

8. The integrated hydrogen filling and unloading column according to claim 1, characterized in that: The first safety valve is connected between the second pneumatic ball valve and the first flow meter, and is connected to the rear end of the sixth needle valve until the vent e.

9. A hydrogen replacement method based on the hydrogen filling and unloading integrated column according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. When the hydrogen long tube trailer is being filled, the second pneumatic ball valve is closed, the hydrogen unloading pipeline is isolated, and the hydrogen unloading function is closed; the filling hose is connected to the hydrogen tube bundle vehicle, and the seventh needle valve and the second needle valve are opened to inject nitrogen between the tube bundle vehicle and the first pneumatic ball valve; then the seventh needle valve and the second needle valve are closed, and the third needle valve and the sixth needle valve are opened to release the nitrogen; S2, repeat S1 4-6 times to complete nitrogen replacement; S3, open the valve on the compressor and the first pneumatic ball valve to inject hydrogen into the filling pipeline; open the third needle valve and the sixth needle valve to release the hydrogen; S4. Repeat S3 4-6 times to complete the hydrogen replacement.

10. The hydrogen replacement method according to claim 9, characterized in that: The following steps are also included: S5. When the hydrogen long tube trailer is unloading hydrogen, the first pneumatic ball valve is closed, the filling pipeline is isolated, and the filling function is closed; the hydrogen unloading hose is connected to the hydrogen tube bundle vehicle, and the seventh needle valve and the second needle valve are opened to inject nitrogen between the tube bundle vehicle and the second pneumatic ball valve; then the seventh needle valve and the second needle valve are closed, and the fourth needle valve and the sixth needle valve are opened to release nitrogen; S6, repeat S5 4-6 times to complete nitrogen replacement; S7, open the hydrogen main valve on the hydrogen long tube trailer to inject hydrogen into the hydrogen unloading pipeline; open the fourth needle valve and the sixth needle valve to release the hydrogen; S8. Repeat S7 4-6 times to complete the hydrogen replacement.

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