Hydrogen-natural gas mixing integrated skid-mounted equipment

Abstract

The utility model relates to hydrogen-natural gas mixing integrated skid-mounted equipment which comprises a hydrogen unit and a hydrogen-natural gas static mixer unit which are connected through a pipeline, and the hydrogen unit is composed of a filtering module, a hydrogen main pipe, a metering module, a pressure regulating module and a pressurizing module. One end of the filtering module is connected with the pipeline hydrogen transported by the long pipe trailer and used for filtering solid and liquid impurities existing in the pipeline hydrogen transported by the long pipe trailer, the other end of the filtering module is connected with the side body of the hydrogen mother pipe, and the end, close to the filtering module, of the hydrogen mother pipe is provided with a reserved connector used for being connected to the pipeline hydrogen. The other end of the hydrogen main pipe is connected with the hydrogen-natural gas static mixer unit, and the hydrogen main pipe is sequentially connected with a metering module, a pressurizing module and a pressure regulating module. The device has the advantages of simple structure, compact arrangement, safety in operation, convenience in maintenance, improvement of hydrogen utilization efficiency, saving of hydrogen storage and transportation cost and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformers, and in particular relates to a hydrogen-natural gas blending integrated skid-mounted equipment. Background Art

[0002] Hydrogen energy is a green and clean secondary energy source that can drive energy transition and deep decarbonization. It has a wide range of applications, primarily in transportation, industry, energy storage, and construction. Hydrogen gas turbines, as a key component of future new power systems, are a crucial avenue for large-scale hydrogen energy application and can drive the development of the entire hydrogen energy industry chain, upstream, midstream, and downstream. Currently, natural gas is the primary fuel for gas turbine power plants. As fuels expand to pure hydrogen, the combustion of a mixture of hydrogen and natural gas in gas turbines is a key research and development direction for gas turbine equipment.

[0003] Currently, research on hydrogen-blended natural gas combustion mainly focuses on hydrogen-natural gas mixers, hydrogen-natural gas blending systems, and the combustion performance of hydrogen-blended gas turbines. For example, publication numbers "CN217367921U" "A Hydrogen-Natural Gas Mixer" and "CN215674776U" "A Skid-Mounted Natural Gas Online Hydrogen Blending Equipment" are available. However, there is little research on the layout design of hydrogen-natural gas blending systems in actual engineering application scenarios.

[0004] To this end, a hydrogen-natural gas blending integrated skid-mounted equipment is designed to overcome the above problems. Summary of the Invention

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a hydrogen-natural gas blending integrated skid-mounted equipment with a simple structure, compact layout, safe operation, easy maintenance, improved hydrogen utilization efficiency, and saved hydrogen storage and transportation costs.

[0006] The utility model is realized through the following technical solutions: a hydrogen-natural gas blending integrated skid-mounted equipment, comprising a hydrogen unit and a hydrogen-natural gas static mixer unit, which are connected by a pipeline. The hydrogen unit is composed of a filter module, a hydrogen main pipe, a metering module, a pressure regulating module and a boosting module. One end of the filter module is connected to the pipeline hydrogen transported by the long tube trailer, and is used to filter the solid and liquid impurities in the pipeline hydrogen transported by the long tube trailer. The other end is connected to the side of the hydrogen main pipe. The end of the hydrogen main pipe close to the filter module is provided with a reserved interface for connecting to the pipeline hydrogen. The other end of the hydrogen main pipe is connected to the pipeline hydrogen. The end is connected to the hydrogen-natural gas static mixer unit, and a metering module, a boosting module and a pressure regulating module are connected in sequence on the hydrogen main pipe between the filtering module and the hydrogen-natural gas static mixer unit, wherein the metering module is used to measure the amount of hydrogen entering the hydrogen-natural gas static mixer unit, the pressure regulating module is used to adjust the pressure and flow of the hydrogen to meet the pressure and flow requirements of the hydrogen entering the hydrogen-natural gas static mixer unit, and the boosting module is used to judge the hydrogen pressure after the hydrogen passes through the metering module and before entering the pressure regulating module. If the pressure is lower than the minimum pressure for mixing with natural gas, a boosting operation is performed.

[0007] Preferably, the hydrogen-natural gas static mixer unit is composed of a pipeline, a static mixer, a shut-off valve before the static mixer, and a shut-off valve after the static mixer, which are arranged on the pipeline. The static mixer is connected to the hydrogen main pipe, and a shut-off valve before the static mixer and a shut-off valve after the static mixer are respectively arranged on both sides of the static mixer. The hydrogen-natural gas static mixer unit and the pressure regulating module are arranged perpendicular to each other, and an inspection space is provided between the hydrogen-natural gas static mixer unit and the hydrogen unit.

[0008] Preferably, the filter module of the hydrogen unit is composed of multiple hydrogen filters arranged in parallel, each hydrogen filter is vertically connected to the hydrogen main pipe, and a first filter shut-off valve is provided on the side of the hydrogen filter away from the hydrogen main pipe, and a filter check valve and a second filter shut-off valve are respectively provided on the side close to the hydrogen main pipe.

[0009] Preferably, the metering module of the hydrogen unit is composed of a mass flowmeter, a flowmeter front shut-off valve, a flowmeter rear shut-off valve and a bypass shut-off valve. The mass flowmeter is installed on the hydrogen main pipe, and the flowmeter front shut-off valve and the flowmeter rear shut-off valve are respectively provided on both sides of the mass flowmeter on the hydrogen main pipe. The bypass shut-off valve is installed on the bypass pipe of the hydrogen main pipe at the metering module.

[0010] Preferably, the pressure regulating module of the hydrogen unit is composed of a regulating valve, a shut-off valve, a check valve and a shut-off valve before the boosting module. The regulating valve is arranged at a position on the hydrogen main pipe close to the hydrogen-natural gas static mixer unit. A shut-off valve and a check valve are respectively arranged on both sides of the regulating valve, and a shut-off valve before the boosting module is arranged on the side of the shut-off valve away from the regulating valve. The regulating valve is used to adjust the hydrogen pressure and flow to meet the pressure and flow requirements of the hydrogen entering the hydrogen-natural gas static mixer unit.

[0011] Preferably, the boosting module of the hydrogen unit is composed of a piston compressor, a compressor front shut-off valve, and a compressor rear shut-off valve. The piston compressor is connected to the hydrogen main pipe. The compressor front shut-off valve and the compressor rear shut-off valve are respectively provided on both sides of the piston compressor, and the compressor front shut-off valve and the compressor rear shut-off valve are respectively provided at the inlet and outlet of the piston compressor.

[0012] Preferably, the filter module, metering module, pressure regulating module and hydrogen-natural gas static mixer unit of the hydrogen unit are all provided with a skid-mounted base.

[0013] Preferably, maintenance passages are provided between the filter module and the metering module, between the metering module and the pressure regulating module, and between the hydrogen unit and the hydrogen-natural gas static mixer unit.

[0014] The beneficial effects of the utility model are as follows:

[0015] The integrated hydrogen-natural gas blending system of this utility model is equipped with both a hydrogen pressure regulating module and a hydrogen boosting module. The hydrogen boosting module can be activated to deliver as much hydrogen as possible to the hydrogen-natural gas mixer, maximizing the utilization of hydrogen in the hydrogen tube trailer. This improves hydrogen utilization efficiency and reduces hydrogen storage and transportation costs. The utility model also provides an interface for future expansion of hydrogen tube trailer parking spaces or connection to long-distance hydrogen pipelines, facilitating future capacity expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the layout diagram of the hydrogen-natural gas blending integrated skid-mounted equipment of the utility model.

[0017] Figure 2 This is a structural diagram of the hydrogen filtration module in the present utility model.

[0018] Figure 3 This is a structural diagram of the hydrogen metering module in the present utility model.

[0019] Figure 4 This is a structural diagram of the hydrogen boosting module in the present utility model.

[0020] Figure 5This is a schematic structural diagram of the hydrogen-natural gas static mixer unit in the present utility model. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to more clearly understand the objectives, technical solutions and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0022] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “inside”, “outside”, “horizontal” and “vertical” are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] The present invention will be described in detail below with reference to the accompanying drawings: Figure 1 As shown, a hydrogen-natural gas blending integrated skid-mounted equipment includes a hydrogen unit 1 and a hydrogen-natural gas static mixer unit 2, which are connected by a pipeline. The hydrogen unit 1 consists of a filter module 3, a hydrogen main pipe 11, a metering module 4, a pressure regulating module 5 and a boosting module 6. One end of the filter module 3 is connected to the pipeline hydrogen transported by the long tube trailer, and is used to filter the solid and liquid impurities in the pipeline hydrogen transported by the long tube trailer. The other end is connected to the hydrogen main pipe 11 sideways. The end of the hydrogen main pipe 11 close to the filter module 3 is provided with a reserved interface 12 for connecting to the pipeline hydrogen. The other end of the hydrogen main pipe 11 is connected to the hydrogen- The natural gas static mixer unit 2 is connected, and a metering module 4, a boosting module 6, and a pressure regulating module 5 are sequentially connected on the hydrogen main pipe 11 between the filtering module 3 and the hydrogen-natural gas static mixer unit 2. The metering module 4 is used to measure the amount of hydrogen entering the hydrogen-natural gas static mixer unit 2. The pressure regulating module 5 is used to adjust the pressure and flow of the hydrogen to meet the pressure and flow requirements of the hydrogen entering the hydrogen-natural gas static mixer unit. The boosting module 6 is used to judge the hydrogen pressure after the hydrogen passes through the metering module and before entering the pressure regulating module. If the pressure is lower than the minimum pressure for mixing with natural gas, a boosting operation is performed.

[0024] The hydrogen-natural gas static mixer unit 2 consists of a pipeline and a static mixer 29, a static mixer front shut-off valve 30, and a static mixer rear shut-off valve 31 arranged on the pipeline. The static mixer 29 is connected to the hydrogen main pipe 11. The static mixer front shut-off valve 30 and the static mixer rear shut-off valve 31 are respectively arranged on both sides of the static mixer 29. The hydrogen-natural gas static mixer unit 2 and the pressure regulating module 5 are arranged perpendicular to each other, and an inspection space 32 is provided between the hydrogen-natural gas static mixer unit 2 and the hydrogen unit 1.

[0025] As shown in Figure 2 , the filter module 3 of the hydrogen unit 1 is composed of multiple parallel hydrogen filters 7, each of which is connected to the hydrogen main pipe 11 vertically, and a first filter shut-off valve 8 is arranged on the side of the hydrogen filter 7 away from the hydrogen main pipe 11, and a filter check valve 9 and a second filter shut-off valve 10 are arranged on the side of the hydrogen filter 7 close to the hydrogen main pipe 11.

[0026] As shown in Figure 3 , the metering module 4 of the hydrogen unit 1 is composed of a mass flow meter 14, a flow meter front shut-off valve 15, a flow meter rear shut-off valve 16 and a bypass shut-off valve 17, the mass flow meter 14 is installed on the hydrogen main pipe 11, and the flow meter front shut-off valve 15 and the flow meter rear shut-off valve 16 are arranged on the hydrogen main pipe 11 on both sides of the mass flow meter 14, and the bypass shut-off valve 17 is installed on the bypass pipe 13 of the hydrogen main pipe 11 at the metering module 4.

[0027] As shown in Figure 4-5 , the pressure regulating module 5 of the hydrogen unit 1 is composed of a regulating valve 20, a shut-off valve 21, a check valve 22 and a booster module front shut-off valve 25, the regulating valve 20 is arranged on the hydrogen main pipe 11 close to the hydrogen-natural gas static mixer unit 2, the shut-off valve 21 and the check valve 22 are arranged on both sides of the regulating valve 20, and the booster module front shut-off valve 25 is arranged on the side of the shut-off valve 21 away from the regulating valve 20, if the hydrogen enters the pressure regulating module 5 after passing through the metering module 4, and the pressure is lower than the minimum pressure for mixing with natural gas, the booster module front shut-off valve 25 controls the hydrogen to pass through the booster module 6 for pressure boosting, and the regulating valve 20 can be multiple, which are pressure regulating valves and flow regulating valves, used for adjusting the pressure and flow of hydrogen to meet the pressure and flow requirements of hydrogen entering the hydrogen-natural gas static mixer unit.

[0028] The booster module 6 of the hydrogen unit 1 is composed of a piston compressor 26, a compressor front shut-off valve 27 and a compressor rear shut-off valve 28, the piston compressor 26 is connected to the hydrogen main pipe 11, the compressor front shut-off valve 27 and the compressor rear shut-off valve 28 are arranged on both sides of the piston compressor 26, and the compressor front shut-off valve 27 and the compressor rear shut-off valve 28 are arranged on the inlet and outlet of the piston compressor 26.

[0029] The filter module 3, the metering module 4 and the pressure regulating module 5 of the hydrogen unit 1 and the hydrogen-natural gas static mixer unit 2 are all provided with a skid-mounted base 33.

[0030] Maintenance passages 19 are provided between the filter module 3 and the metering module 4 , between the metering module 4 and the pressure regulating module 5 , and between the hydrogen unit 1 and the hydrogen-natural gas static mixer unit 2 .

[0031] The boosting module 6 in the present invention is located at the edge of the hydrogen and natural gas blending integrated skid-mounted equipment, and is not provided with a skid-mounted base, so it needs to be installed on site.

[0032] The utility model reserves an interface for the future expansion of hydrogen long-tube trailer parking spaces or the connection of hydrogen long-distance pipelines, which is convenient for future expansion; the hydrogen-natural gas blending integrated system involved in the utility model is provided with both a hydrogen pressure regulating module and a hydrogen boosting module, which can be activated to transport as much hydrogen as possible to the hydrogen-natural gas mixer, thereby achieving the purpose of maximizing the utilization of hydrogen in the hydrogen long-tube trailer, improving hydrogen utilization efficiency, and saving hydrogen storage and transportation costs.

[0033] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, any equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this utility model shall be covered by the claims of this utility model.

Claims

1. A hydrogen-natural gas blending integrated skid-mounted equipment, comprising a hydrogen unit (1) and a hydrogen-natural gas static mixer unit (2), which are connected by a pipeline, characterized in that: The hydrogen unit (1) is composed of a filter module (3), a hydrogen main pipe (11), a metering module (4), a pressure regulating module (5) and a boosting module (6). One end of the filter module (3) is connected to the pipeline hydrogen transported by the long tube trailer and is used to filter solid and liquid impurities in the pipeline hydrogen transported by the long tube trailer. The other end of the filter module (3) is connected to the side of the hydrogen main pipe (11). The end of the hydrogen main pipe (11) close to the filter module (3) is provided with a reserved interface (12) for connecting to the pipeline hydrogen. The other end of the hydrogen main pipe (11) is connected to the hydrogen-natural gas static mixer unit (2) and is connected to the filter module (3). A metering module (4), a boosting module (6) and a pressure regulating module (5) are sequentially connected to the side of the hydrogen main pipe (11) between the hydrogen-natural gas static mixer unit (2), wherein the metering module (4) is used to measure the amount of hydrogen entering the hydrogen-natural gas static mixer unit (2), the pressure regulating module (5) is used to regulate the pressure and flow of the hydrogen to meet the pressure and flow requirements of the hydrogen entering the hydrogen-natural gas static mixer unit, and the boosting module (6) is used to judge the pressure of the hydrogen after the hydrogen passes through the metering module and before entering the pressure regulating module. If the pressure is lower than the minimum pressure for mixing with natural gas, a boosting operation is performed.

2. The integrated skid-mounted hydrogen-natural gas blending equipment according to claim 1 is characterized by: The hydrogen-natural gas static mixer unit (2) is composed of a pipeline, a static mixer (29) arranged on the pipeline, a static mixer front shut-off valve (30), and a static mixer rear shut-off valve (31). The static mixer (29) is connected to the hydrogen main pipe (11). The static mixer front shut-off valve (30) and the static mixer rear shut-off valve (31) are respectively arranged on both sides of the static mixer (29). The hydrogen-natural gas static mixer unit (2) and the pressure regulating module (5) are arranged perpendicular to each other, and an inspection space (32) is provided between the hydrogen-natural gas static mixer unit (2) and the hydrogen unit (1).

3. The integrated skid-mounted hydrogen-natural gas blending equipment according to claim 2 is characterized by: The filter module (3) of the hydrogen unit (1) is composed of a plurality of hydrogen filters (7) arranged in parallel, each hydrogen filter (7) being vertically connected to a hydrogen main pipe (11), a first filter shutoff valve (8) being provided on a side of the hydrogen filter (7) away from the hydrogen main pipe (11), and a filter check valve (9) and a second filter shutoff valve (10) being provided on a side of the hydrogen filter (7) close to the hydrogen main pipe (11).

4. The integrated skid-mounted hydrogen-natural gas blending equipment according to claim 3 is characterized by: The metering module (4) of the hydrogen unit (1) is composed of a mass flow meter (14), a flow meter front shut-off valve (15), a flow meter rear shut-off valve (16) and a bypass shut-off valve (17). The mass flow meter (14) is installed on the hydrogen main pipe (11), and the flow meter front shut-off valve (15) and the flow meter rear shut-off valve (16) are respectively provided on both sides of the mass flow meter (14) on the hydrogen main pipe (11). The bypass shut-off valve (17) is installed on the bypass pipe (13) of the hydrogen main pipe (11) at the metering module (4).

5. The integrated skid-mounted hydrogen-natural gas blending equipment according to claim 4 is characterized in that: The pressure regulating module (5) of the hydrogen unit (1) is composed of a regulating valve (20), a shut-off valve (21), a check valve (22) and a shut-off valve (25) before the boosting module. The regulating valve (20) is arranged at a position of the hydrogen main pipe (11) close to the hydrogen-natural gas static mixer unit (2). The shut-off valve (21) and the check valve (22) are respectively arranged on both sides of the regulating valve (20). A shut-off valve (25) before the boosting module is arranged on the side of the shut-off valve (21) away from the regulating valve (20). The regulating valve (20) is used to regulate the pressure and flow of hydrogen to meet the pressure and flow requirements of hydrogen entering the hydrogen-natural gas static mixer unit.

6. The integrated skid-mounted hydrogen-natural gas blending equipment according to claim 5 is characterized by: The boosting module (6) of the hydrogen unit (1) is composed of a piston compressor (26), a compressor front shut-off valve (27), and a compressor rear shut-off valve (28). The piston compressor (26) is connected to the hydrogen main pipe (11). The compressor front shut-off valve (27) and the compressor rear shut-off valve (28) are respectively provided on both sides of the piston compressor (26), and the compressor front shut-off valve (27) and the compressor rear shut-off valve (28) are respectively provided at the inlet and outlet of the piston compressor (26).

7. The integrated skid-mounted hydrogen-natural gas blending equipment according to claim 6 is characterized by: The filter module (3), metering module (4), and pressure regulating module (5) of the hydrogen unit (1), as well as the hydrogen-natural gas static mixer unit (2), are all provided with a skid-mounted base (33).

8. The integrated skid-mounted hydrogen-natural gas blending equipment according to claim 7 is characterized in that: Maintenance passages (19) are provided between the filter module (3) and the metering module (4), between the metering module (4) and the pressure regulating module (5), and between the hydrogen unit (1) and the hydrogen-natural gas static mixer unit (2).

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