Mobile skid-mounted hydrogen refueling equipment and skid-mounted hydrogen refueling station

Abstract

The utility model provides mobile skid-mounted hydrogenation equipment and a skid-mounted hydrogen refueling station, and relates to the technical field of hydrogen refueling stations, the mobile skid-mounted hydrogenation equipment comprises a 20MPa pressurizing pry and a 45MPa pressurizing pry which are communicated, each of the 20MPa pressurizing pry and the 45MPa pressurizing pry comprises a compressor, a water chilling unit, an air compressor, a diffusion tower, a control cabinet and a power supply cabinet which are integrated on a base, and the compressors comprise a 20MPa compressor and a 45MPa compressor; the 20MPa pressurizing pry further comprises a hydrogen storage tank, a first hydrogen inlet of the 20MPa compressor is connected with hydrogen production equipment, and a first hydrogen outlet of the 20MPa compressor is selectively communicated with the hydrogen storage tank, the 45MPa pressurizing pry and the long tube trailer; the 45MPa pressurizing pry further comprises a hydrogenation machine, a second hydrogen inlet of the 45MPa compressor is communicated with the first hydrogen outlet, and a second hydrogen outlet is connected with the vehicle-mounted bottle; the water chilling unit is arranged at the first hydrogen outlet and the second hydrogen outlet; the diffusing tower is communicated with the compressor, the hydrogen storage tank and the hydrogenation machine; the control cabinet and the power supply are electrically connected with the compressor, the water chilling unit, the air compressor and the diffusing tower respectively. Skid-mounted integration is adopted, pipeline connection is few, the occupied use area and space are smaller, and movement is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen refueling stations, and in particular to a mobile skid-mounted hydrogen refueling device and a skid-mounted hydrogen refueling station. Background Art

[0002] With the development of the hydrogen energy industry, more and more high-pressure hydrogen (20MPa and 45MPa) is needed. However, many places are equipped with hydrogen production facilities, which can produce low-pressure hydrogen (1MPa), but they are not necessarily equipped with corresponding boosting facilities, such as 20MPa compressors / 45MPa compressors and corresponding filling equipment. The hydrogen produced in this way has no way to be directly filled into the production pipeline trailer or into the vehicle-mounted bottle. The hydrogen produced must be pressurized to 20MPa or 45MPa after a series of boosting before it can be used. If the corresponding equipment needs to be added, the hydrogen production party needs to increase the cost. Compared with fixed boosting equipment and hydrogen refueling machines, in the case of limited land resources in urban built-up areas, there is an urgent need for skid-mounted hydrogen refueling equipment that occupies a small area and can be moved to adapt to more scenarios. Utility Model Content

[0003] In view of this, the embodiments of the present invention provide a mobile skid-mounted hydrogenation equipment and a skid-mounted hydrogenation station, which aim to solve the problem of large footprint and high cost of existing fixed boosting equipment.

[0004] The embodiment of the utility model provides a mobile skid-mounted hydrogenation equipment, comprising a 20MPa boosting skid and a 45MPa boosting skid connected to each other, wherein the 20MPa boosting skid and the 45MPa boosting skid both comprise a compressor, a chiller, an air compressor, a discharge tower, a control cabinet and a power cabinet integrated on a base, and an air pressure valve is installed in the compressor, wherein the compressor in the 20MPa boosting skid is a 20MPa compressor, and the compressor in the 45MPa boosting skid is a 45MPa compressor;

[0005] The 20MPa booster skid further includes a hydrogen storage tank, and the 20MPa compressor includes a first hydrogen inlet and a first hydrogen outlet, wherein the first hydrogen inlet is used to connect to a hydrogen production device, and the first hydrogen outlet selectively connects to the hydrogen storage tank, the 45MPa booster skid, and the long tube trailer;

[0006] The 45MPa booster skid further includes a hydrogenator, the 45MPa compressor includes a second hydrogen inlet and a second hydrogen outlet, the second hydrogen inlet is connected to the first hydrogen outlet, and the second hydrogen outlet is connected to the vehicle-mounted bottle through the hydrogenation gun on the hydrogenator;

[0007] The chiller is disposed at the first hydrogen outlet and the second hydrogen outlet, and is used to cool the compressed hydrogen;

[0008] The air compressor provides a driving air source for the air pressure valve;

[0009] The discharge tower is connected to the compressor, the hydrogen storage tank and the hydrogenator through a pipeline, and is used to discharge hydrogen into the atmosphere;

[0010] The control cabinet and the power supply are electrically connected to the compressor, the chiller, the air compressor and the discharge tower respectively, and the control cabinet is electrically connected to the power supply, and a PLC controller is arranged in the control cabinet.

[0011] Furthermore, the 20MPa booster skid and the 45MPa booster skid are also integrated with a nitrogen bus, one end of which is connected to the nitrogen bottle group, and the other end is connected to the compressor, the hydrogen storage tank and the hydrogenator through pipelines, for purging the hydrogen in the compressor, the hydrogen storage tank and the hydrogenator.

[0012] Furthermore, the 45 MPa boost skid also includes a gas unloading system, one end of which is connected to the long tube trailer, and the other end of which is connected to the second hydrogen inlet.

[0013] Furthermore, the gas unloading system is also connected to the nitrogen bus.

[0014] Furthermore, the 20MPa boosting skid and the 45MPa boosting skid are provided with a shell outside, and the shell cover is arranged above the base.

[0015] Furthermore, the highest point of the emission tower is at least 2 m away from the upper surface of the shell.

[0016] Furthermore, the 20MPa booster skid is also provided with a residual gas recovery inlet, and the 45MPa booster skid is also provided with a residual gas outlet. The residual gas recovery inlet is arranged on the hydrogen storage tank, and the residual gas outlet is arranged on the gas unloading system, and the residual gas recovery inlet is connected to the residual gas outlet.

[0017] Furthermore, a roller is provided under the base.

[0018] The utility model also provides a skid-mounted hydrogenation station, comprising the mobile skid-mounted hydrogenation equipment as described above.

[0019] The technical solution provided by the embodiment of the utility model has the following beneficial effects: when used in the mobile skid-mounted hydrogenation equipment of the utility model, when the low-pressure hydrogen (generally about 1MPa) produced by the hydrogen production device is produced, the low-pressure hydrogen enters the 20MPa booster skid through the first hydrogen inlet of the 20MPa compressor, and after being pressurized to 20MPa by the 20MPa compressor, the pressurized hydrogen can be stored in the hydrogen storage tank according to the actual situation to prepare for the hydrogen demand of the back-end, or directly transported to the back-end for use through the first hydrogen outlet, such as transported to a long tube trailer for hydrogen filling or transported to a 45MPa booster skid for continued pressurization. When the 20MPa hydrogen enters the 45MPa compressor and continues to be pressurized to 45MPa, it can meet the needs of the vehicle-mounted bottle, and the high-pressure hydrogen can be added to the vehicle-mounted bottle for use through the hydrogenator. Compared with conventional fixed hydrogen production and hydrogenation stations, this hydrogenation equipment adopts skid-mounted integration, with higher integration, fewer pipeline connections, smaller occupied area and space, more convenient movement, and a wider range and scenarios of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a 20MPa boosting skid in a mobile skid-mounted hydrogenation equipment provided by the utility model;

[0021] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the 20MPa boost skid;

[0022] Figure 3 It is a structural schematic diagram of an embodiment of a 45MPa boosting skid in a mobile skid-mounted hydrogenation equipment provided by the utility model;

[0023] Figure 4 yes Figure 3 Schematic diagram of the internal structure of the 45MPa boost skid.

[0024] In the figure: 10, 20MPa booster skid; 20, 45MPa booster skid; 1, compressor; 2, chiller; 3, nitrogen bus; 4, hydrogen storage tank; 5, air compressor; 6, discharge tower; 7, control cabinet; 8, power cabinet; 9, base; 11, hydrogenation machine; 12, gas unloading system. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the implementation mode of the utility model will be further described below in conjunction with the accompanying drawings.

[0026] Please refer to Figure 1-Figure 4As shown, an embodiment of the utility model provides a mobile skid-mounted hydrogenation equipment, including a 20MPa boosting skid 10 and a 45MPa boosting skid 20 connected to each other, wherein the 20MPa boosting skid 10 and the 45MPa boosting skid 20 both include a compressor 1, a chiller 2, an air compressor 5, a discharge tower 6, a control cabinet 7 and a power cabinet 8 integrated on a base 9, and an air pressure valve is installed in the compressor 1, wherein the compressor 1 in the 20MPa boosting skid 10 is a 20MPa compressor 1, and the compressor 1 in the 45MPa boosting skid 20 is a 45MPa compressor 1; the 20MPa boosting skid 10 also includes a hydrogen storage tank 4, which is a 22MPa hydrogen storage tank 4, and the 20MPa compressor 1 includes a first hydrogen inlet and a first hydrogen outlet, wherein the first hydrogen inlet is used to connect to the hydrogen production equipment, and the first hydrogen outlet is selectively connected to the storage A hydrogen tank 4, the 45MPa booster skid 20, and a long tube trailer; the 45MPa booster skid 20 also includes a hydrogenator 11, the 45MPa compressor 1 includes a second hydrogen inlet and a second hydrogen outlet, the second hydrogen inlet is connected to the first hydrogen outlet, and the second hydrogen outlet is connected to the vehicle-mounted bottle through the hydrogenation gun muzzle on the hydrogenator 11; the chiller 2 is arranged at the first hydrogen outlet and the second hydrogen outlet, and is used to cool the compressed hydrogen; the air compressor 5 provides a driving gas source for the air pressure valve; the discharge tower 6 is connected to the compressor 1, the hydrogen storage tank 4 and the hydrogenator 11 through a pipeline, and is used to discharge hydrogen to the atmosphere; the control cabinet 7 and the power supply are electrically connected to the compressor 1, the chiller 2, the air compressor 5 and the discharge tower 6, respectively, and the control cabinet 7 is electrically connected to the power supply, and a PLC controller is arranged in the control cabinet 7.

[0027] During use, when the hydrogen production device produces low-pressure hydrogen (generally about 1MPa), the low-pressure hydrogen enters the 20MPa booster skid 10 through the first hydrogen inlet of the 20MPa compressor 1. After being pressurized to 20MPa by the 20MPa compressor 1, the pressurized hydrogen can be stored in the hydrogen storage tank 4 according to actual conditions to meet the hydrogen demand of the rear end, or directly transported to the rear end for use through the first hydrogen outlet, such as being transported to a long tube trailer for hydrogen filling or transported to the 45MPa booster skid 20 for continued pressurization. When the 20MPa hydrogen enters the 45MPa compressor 1 and continues to be pressurized to 45MPa, the demand of the vehicle bottle can be met, and the high-pressure hydrogen can be added to the vehicle bottle for use through the hydrogen filling machine 11.

[0028] Among them, when the hydrogen is pressurized by the 20MPa compressor 1 and the 45MPa compressor 1, the temperature of the generated 20MPa hydrogen or 45MPa hydrogen is relatively high. Generally, the 20MPa hydrogen will reach above 250°C, and the 45MPa hydrogen will reach above 350°C. At this time, the pressurized hydrogen is cooled to no more than 40°C by the cooling water provided by the chiller 2, and then the cooled high-pressure hydrogen is provided to the 45MPa compressor 1, the production pipe trailer or the hydrogenation machine 11 for use.

[0029] It is worth noting that the compressor 1, the hydrogenator 11, the venting tower 6 and the chiller 2 are all direct uses of the existing technology, and the specific structure will not be described in detail here.

[0030] It is worth noting that in the actual application of hydrogen refueling stations, when the pressure of hydrogen in the long-tube trailer supplied by external gas is lower than 5MPa, it is generally no longer usable and will be transported away with the long-tube trailer, resulting in a partial waste of hydrogen in the long-tube trailer. Because of this, the dynamic skid-mounted hydrogenation equipment is composed of two parts, a 20MPa booster skid 10 and a 45MPa booster skid 20. The 20MPa booster skid 10 is provided with a 22MPa hydrogen storage tank, so the hydrogen below 5MPa in the long-tube trailer can be recovered and stored in the 22MPa hydrogen storage tank for subsequent use, which can recover hydrogen and avoid waste.

[0031] Furthermore, a nitrogen bus 3 is integrated on the 20MPa boosting skid 10 and the 45MPa boosting skid 20, one end of the nitrogen bus 3 is connected to the nitrogen cylinder group, and the other end is connected to the compressor 1, the hydrogen storage tank 4 and the hydrogenator 11 through pipelines, so as to purge the hydrogen in the compressor 1, the hydrogen storage tank 4 and the hydrogenator 11.

[0032] The nitrogen bus 3 is mainly used for inspection and maintenance. In order to prevent accidents of hydrogen combustion and explosion, for safety reasons, the nitrogen in the nitrogen bottle group can be purged through the pipeline to the compressor 1, hydrogen storage tank 4 and hydrogenator 11 and other equipment containing hydrogen to drive out the internal hydrogen. The nitrogen bus 3 is mainly composed of pipelines and valves connecting various components. The valves are arranged on each pipeline and are used to purge nitrogen into each hydrogen equipment or pipeline.

[0033] Furthermore, the 45MPa boosting skid 20 further includes a gas unloading system 12, one end of which is connected to the long tube trailer, and the other end is connected to the second hydrogen inlet. By providing the gas unloading system 12, a long tube trailer for external hydrogen supply can be connected to take gas, so as to prevent the 20MPa boosting skid 10 from being unable to provide the hydrogen required by the 45MPa boosting skid 20, and the hydrogen in the external long tube trailer can be used.

[0034] Specifically, the gas unloading system 12 is also connected to the nitrogen bus 3. Since the gas unloading system 12 is also used to transport hydrogen, during maintenance, the hydrogen in the gas unloading system 12 also needs to be driven out for safety reasons.

[0035] Specifically, the 20MPa boosting skid 10 and the 45MPa boosting skid 20 are also provided with a shell, and the shell cover is arranged above the base 9. The highest point of the discharge tower 6 is at least 2m away from the upper surface of the shell. In order to meet the standard requirements, if the equipment for hydrogen circulation in the entire 20MPa boosting skid 10 and the 45MPa boosting skid 20 needs to be vented, it can be directly discharged into the atmosphere through the discharge tower 6. Specifically, the bottom of the discharge tower 6 is connected to the compressor 1, the nitrogen bus 3, the hydrogen storage tank 4, the hydrogenator 11 and the gas unloading system 12 through pipelines.

[0036] Specifically, the 20MPa boosting skid 10 is also provided with a residual gas recovery inlet, and the 45MPa boosting skid 20 is also provided with a residual gas outlet. The residual gas recovery inlet is arranged on the hydrogen storage tank 4, and the residual gas outlet is arranged on the gas unloading system 12, and the residual gas recovery inlet is connected to the residual gas outlet.

[0037] Normally, the hydrogen pressure in the tube trailer is 20 MPa. However, when the hydrogen used in the tube trailer is lower than 5 MPa, the hydrogen in the tube trailer cannot be used for the 45 MPa boosting skid 20. However, the remaining 5 MPa hydrogen in the tube trailer can be transported to the hydrogen storage tank 4 of the 20 MPa boosting skid 10 for storage through the gas unloading system 12 in the 45 MPa boosting skid 20, and the residual gas recovery inlet is connected to the residual gas outlet, so that the residual hydrogen in the tube trailer can be recovered.

[0038] Preferably, rollers are provided under the base 9. By providing rollers under the base 9, it is convenient to move the base 9 and the hydrogenation equipment.

[0039] The utility model also provides a skid-mounted hydrogenation station, including the mobile skid-mounted hydrogenation equipment mentioned above, through which the hydrogenation equipment is connected to the hydrogen production equipment, low-pressure hydrogen can be converted into 20MPa and 45MPa hydrogen that can be directly used, which can be directly used by the long tube trailer and the hydrogenation machine 11.

[0040] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0041] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mobile skid-mounted hydrogenation equipment, characterized in that: It comprises a 20MPa boosting skid and a 45MPa boosting skid which are connected to each other. Both the 20MPa boosting skid and the 45MPa boosting skid comprise a compressor, a chiller, an air compressor, a discharge tower, a control cabinet and a power cabinet which are integrated on a base. An air pressure valve is installed in the compressor. The compressor in the 20MPa boosting skid is a 20MPa compressor, and the compressor in the 45MPa boosting skid is a 45MPa compressor. The 20MPa booster skid further includes a hydrogen storage tank, and the 20MPa compressor includes a first hydrogen inlet and a first hydrogen outlet, wherein the first hydrogen inlet is used to connect to a hydrogen production device, and the first hydrogen outlet selectively connects to the hydrogen storage tank, the 45MPa booster skid, and the long tube trailer; The 45MPa booster skid further includes a hydrogenator, the 45MPa compressor includes a second hydrogen inlet and a second hydrogen outlet, the second hydrogen inlet is connected to the first hydrogen outlet, and the second hydrogen outlet is connected to the vehicle-mounted bottle through the hydrogenation gun on the hydrogenator; The chiller is disposed at the first hydrogen outlet and the second hydrogen outlet, and is used to cool the compressed hydrogen; The air compressor provides a driving air source for the air pressure valve; The discharge tower is connected to the compressor, the hydrogen storage tank and the hydrogenator through a pipeline, and is used to discharge hydrogen into the atmosphere; The control cabinet and the power supply are electrically connected to the compressor, the chiller, the air compressor and the discharge tower respectively, and the control cabinet is electrically connected to the power supply, and a PLC controller is arranged in the control cabinet.

2. The mobile skid-mounted hydrogenation equipment according to claim 1, characterized in that: The 20MPa booster skid and the 45MPa booster skid are also integrated with a nitrogen bus, one end of which is connected to the nitrogen cylinder group, and the other end is connected to the compressor, the hydrogen storage tank and the hydrogenator through pipelines, for purging the hydrogen in the compressor, the hydrogen storage tank and the hydrogenator.

3. The mobile skid-mounted hydrogenation equipment according to claim 2, characterized in that: The 45 MPa boost skid further includes a gas unloading system, one end of which is connected to the long tube trailer, and the other end of which is connected to the second hydrogen inlet.

4. The mobile skid-mounted hydrogenation equipment according to claim 3, characterized in that: The gas unloading system is also communicated with the nitrogen bus.

5. The mobile skid-mounted hydrogenation equipment according to claim 1, characterized in that: The 20MPa boosting skid and the 45MPa boosting skid are also provided with a shell, and the shell cover is arranged above the base.

6. The mobile skid-mounted hydrogenation equipment according to claim 5, characterized in that: The highest point of the emission tower is at least 2m away from the upper surface of the shell.

7. The mobile skid-mounted hydrogenation equipment according to claim 3, characterized in that: The 20MPa booster skid is also provided with a residual gas recovery inlet, and the 45MPa booster skid is also provided with a residual gas outlet. The residual gas recovery inlet is arranged on the hydrogen storage tank, and the residual gas outlet is arranged on the gas unloading system. The residual gas recovery inlet is connected to the residual gas outlet.

8. The mobile skid-mounted hydrogenation equipment according to claim 1, characterized in that: Rollers are arranged under the base.

9. A skid-mounted hydrogen refueling station, characterized in that: It comprises the mobile skid-mounted hydrogenation equipment as described in any one of claims 1 to 7.

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