Hydrogen energy utilization fuel gas mixing system with adjustable mixing proportion

Abstract

The utility model discloses a hydrogen energy utilization fuel gas mixing system with an adjustable mixing proportion, which comprises a fuel gas conveying pipe, a fuel gas mixing pipe, a fuel gas mixing pipe, a fuel gas mixing pipe and a fuel gas mixing pipe, wherein a first electromagnetic valve and a first flow meter are mounted on the fuel gas conveying pipe; a second electromagnetic valve and a second flow meter are mounted on the hydrogen conveying pipe; the gas mixing component is provided with two gas inlets, and the two gas inlets communicate with the fuel gas conveying pipe and the hydrogen conveying pipe correspondingly; and the gas mixing conveying pipe is communicated with the gas outlet of the gas mixing part, so that the mixing strength of fuel gas and hydrogen can be effectively improved, the mixing uniformity is improved, and the use quality of mixed gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas blending, in particular to a hydrogen energy utilization gas blending system with adjustable blending ratio. Background Art

[0002] The hydrogen energy utilization industry is currently experiencing rapid growth and expansion. By building a hydrogen energy industry chain, we can promote the overall development of the new energy industry, establish high-end new energy application demonstrations, and comprehensively upgrade the energy consumption structure. Natural gas hydrogen blending is one of the main forms of hydrogen energy utilization. This process involves injecting hydrogen produced by electrolysis of renewable energy and excess hydrogen generated by hydrogen refueling stations operating at full capacity into the natural gas pipeline network to create hydrogen-blended natural gas. This hydrogen-blended natural gas is then transported to end users through the pipeline network, thus completing a "blending-transportation-utilization" hydrogen energy industry chain and promoting the deep integration of the power grid and gas network. Natural gas hydrogen blending technology not only increases the utilization rate of renewable energy but also contributes to reducing pollutants generated by natural gas terminal combustion and addressing air pollution. Currently, the overall technical level of natural gas hydrogen blending is still in the experimental verification stage, with no unified standards for material compatibility, operational and control safety, advanced hydrogen blending processes, or equipment reliability.

[0003] Chinese patent publication number CN218131094U discloses a hydrogen blending device comprising a first mixer, an ethane injection pipe, and a gas pump located in the middle of the mixed gas output pipe, near the mixed gas output valve. The mixed gas flowmeter and gas pump are both fixedly connected to the mixed gas output pipe.

[0004] The above patent can solve the corresponding technical problems and improve the quality of gas mixing. However, the above patent only mixes various gases through two arc-shaped spoiler plates with a vortex distribution structure. Although it can achieve a certain mixing effect, the impact intensity between the gases is relatively small, which still causes uneven gas mixing and needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a hydrogen energy utilization gas mixing system with an adjustable mixing ratio, so as to solve the problem that the hydrogen mixing device in the prior art mixes various gases through two arc-shaped spoiler plates with a vortex distribution structure. Although it can achieve a certain mixing effect, the impact intensity between the gases is relatively small, which still causes the problem of uniformity of gas mixing.

[0006] In order to achieve the above-mentioned objectives, the main technical solutions adopted by the present invention include: a hydrogen energy utilization gas mixing system with an adjustable mixing ratio, including: a gas delivery pipe, on which a first solenoid valve and a first flow meter are installed; a hydrogen delivery pipe, on which a second solenoid valve and a second flow meter are installed; a gas mixing component, which is provided with two air inlets, and the two air inlets are respectively connected to the gas delivery pipe and the hydrogen delivery pipe; and a gas mixing delivery pipe, which is connected to the air outlet of the gas mixing component.

[0007] As a preferred technical solution, the gas mixing component includes a gas mixing cylinder, which has two air inlet pipes integrally formed on the gas mixing cylinder, the air inlet ends of the two air inlet pipes are fixedly connected to the air outlet ends of the fuel gas delivery pipe and the hydrogen delivery pipe respectively, the air outlet ends of the two air inlet pipes respectively extend into the interior of the gas mixing cylinder and are fixedly connected to a sphere together, the interior of the sphere is provided with a cavity, the air outlet ends of the two air inlet pipes are respectively connected to the cavity, one side of the sphere is fixedly connected with an air outlet pipe, and the air outlet port of the air outlet pipe faces and is close to the inner wall of one end of the gas mixing cylinder.

[0008] As a preferred technical solution, a counter-hedging groove is provided on the inner wall of one end of the gas mixing cylinder, and the opening of the counter-hedging groove faces the gas outlet port of the gas outlet pipe.

[0009] As a preferred technical solution, the two air inlet pipes are respectively arranged at the top and bottom of the sphere, and the air outlet ports of the two air inlet pipes are arranged opposite to each other.

[0010] As a preferred technical solution, a plurality of guide plates arranged in a staggered manner are fixedly installed inside the gas mixing cylinder, and the guide plates are located behind the sphere.

[0011] As a preferred technical solution, a first manual control valve is fixedly installed on the gas delivery pipe;

[0012] A second manual control valve is fixedly installed on the hydrogen delivery pipe.

[0013] As a preferred technical solution, a first filter is fixedly installed on the gas delivery pipe, and the first filter is located in front of the first manual control valve;

[0014] A second filter is fixedly installed on the hydrogen delivery pipe, and the second filter is located in front of the second manual control valve.

[0015] The utility model has at least the following beneficial effects:

[0016] The utility model provides a hydrogen energy utilization gas mixing system with adjustable mixing ratio, which allows the gas and hydrogen to enter the cavity provided inside the sphere through two air inlet pipes on the gas mixing cylinder at the same time, so that the gas and hydrogen can be mixed and counter-mixed inside the cavity, completing the primary mixing of the gas and hydrogen, and then discharged from the air outlet pipe to one end of the gas mixing cylinder. When the gas and hydrogen mixed gas is filled into the counter-mixing groove at one end of the gas mixing cylinder and rebounds, it is counter-mixed with the gas just discharged from the air outlet pipe during the rebound process, completing the secondary mixing, which can effectively increase the mixing intensity of the gas and hydrogen, improve the uniformity of the mixing, and improve the use quality of the mixed gas;

[0017] Gas is input into the gas blending cylinder through the gas delivery pipe, and hydrogen is input into the gas blending cylinder through the hydrogen delivery pipe. During this period, the first flow meter can detect the gas delivery flow rate, and the second flow meter can detect the hydrogen delivery flow rate. The first solenoid valve can automatically control the gas delivery amount of the gas delivery pipe, and the second solenoid valve can automatically control the gas delivery amount of the gas delivery pipe. The gas and hydrogen delivery amounts are detected according to the first flow meter and the second flow meter respectively, and the gas and hydrogen delivery amounts are respectively adjusted through the first solenoid valve and the second solenoid valve according to the set values, so that the mixing ratio of the gas and hydrogen can be adjusted;

[0018] The first manual control valve and the second manual control valve can be ball valves, which can manually shut off the gas and hydrogen delivery in an emergency, thereby increasing the safety of the system;

[0019] The plurality of guide plates can further increase the mixing time of the fuel gas and hydrogen at the inner end of the gas mixing cylinder, and can further improve the mixing quality of the fuel gas and hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 This is a flow chart of the utility model's hydrogen energy utilization gas blending system with adjustable blending ratio;

[0022] Figure 2 This is a side sectional view of the gas mixing cylinder of the hydrogen energy utilization gas mixing system with adjustable mixing ratio according to the present invention;

[0023] Figure 3 This is a front cross-sectional view of the gas mixing cylinder of the hydrogen energy utilization gas mixing system with adjustable mixing ratio according to the present invention.

[0024] Description of Figure Numbers:

[0025] 1. Gas delivery pipe; 101. First solenoid valve; 102. First flow meter; 103. First manual control valve; 104. First filter;

[0026] 2. Hydrogen delivery pipe; 201. Second solenoid valve; 202. Second flow meter; 203. Second manual control valve; 204. Second filter;

[0027] 3. Gas mixing cylinder; 301. Air inlet pipe; 302. Sphere; 303. Cavity; 304. Air outlet pipe; 305. Counterbalance groove; 306. Guide plate;

[0028] 4. Gas mixing and delivery pipe. DETAILED DESCRIPTION

[0029] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Example

[0030] Please refer to Figures 1 to 3 As shown, an embodiment of the present invention provides a hydrogen energy utilization gas mixing system with an adjustable mixing ratio, comprising: a gas delivery pipe 1, on which a first solenoid valve 101 and a first flow meter 102 are installed; a hydrogen delivery pipe 2, on which a second solenoid valve 201 and a second flow meter 202 are installed; a gas mixing component, which is provided with two air inlets, and the two air inlets are respectively connected to the gas delivery pipe 1 and the hydrogen delivery pipe 2; and a gas mixing delivery pipe 4, which is connected to the air outlet of the gas mixing component. By detecting the gas and hydrogen delivery amounts according to the first flow meter 102 and the second flow meter 202 respectively, and adjusting the gas and hydrogen delivery amounts according to the set values ​​through the first solenoid valve 101 and the second solenoid valve 201 respectively, the mixing ratio of the gas and hydrogen can be adjusted. The gas mixing component can effectively increase the mixing intensity of the gas and hydrogen, improve the mixing uniformity, and improve the use quality of the mixed gas.

[0031] Among them, the gas mixing component includes a gas mixing cylinder 3, and two air inlet pipes 301 are integrally formed on the gas mixing cylinder 3. The air inlet ends of the two air inlet pipes 301 are fixedly connected to the air outlet ends of the gas delivery pipe 1 and the hydrogen delivery pipe 2 respectively, and the air outlet ends of the two air inlet pipes 301 respectively extend into the interior of the gas mixing cylinder 3 and are fixedly connected to a sphere 302. A cavity 303 is provided inside the sphere 302, and the air outlet ends of the two air inlet pipes 301 are respectively connected to the cavity 303. One side of the sphere 302 is fixedly connected to an air outlet pipe 304, and the air outlet port of the air outlet pipe 304 is toward and close to the inner wall of one end of the gas mixing cylinder 3. The gas and hydrogen enter the cavity 303 provided inside the sphere 302 at the same time through the two air inlet pipes 301 on the gas mixing cylinder 3, and are squeezed and mixed inside the cavity 303 and discharged from the air outlet pipe 304, which can effectively complete the mixing of the gas and hydrogen.

[0032] Among them, a hedging groove 305 is opened on the inner wall of one end of the gas mixing cylinder 3, and the opening of the hedging groove 305 faces the gas outlet port of the gas outlet pipe 304. The fuel gas and hydrogen mixed gas discharged from the gas outlet pipe 304 rushes into the interior of the hedging groove 305 and rebounds. During the rebound process, it is offset by the gas just discharged from the gas outlet pipe 304, which can further improve the mixing quality of the fuel gas and hydrogen.

[0033] Among them, the two air inlet pipes 301 are respectively arranged at the top and bottom of the sphere 302, and the air outlet ports of the two air inlet pipes 301 are arranged opposite to each other, so that the fuel gas and hydrogen can be mixed inside the cavity 303, further increasing the uniformity of the mixing of the fuel gas and hydrogen.

[0034] Among them, a plurality of guide plates 306 arranged in a staggered manner are fixedly installed on the inside of the gas mixing cylinder 3, and the guide plates 306 are located behind the sphere 302. The plurality of guide plates 306 can further increase the mixing time of the fuel gas and hydrogen at the inner end of the gas mixing cylinder 3, and can further improve the mixing quality of the fuel gas and hydrogen.

[0035] Among them, a first manual control valve 103 is fixedly installed on the gas delivery pipe 1; a second manual control valve 203 is fixedly installed on the hydrogen delivery pipe 2. The first manual control valve 103 and the second manual control valve 203 can be ball valves, which can manually shut down the gas and hydrogen delivery in an emergency, thereby increasing the safety of the use of this system.

[0036] Among them, a first filter 104 is fixedly installed on the gas delivery pipe 1, and the first filter 104 is located in front of the first manual control valve 103; a second filter 204 is fixedly installed on the hydrogen delivery pipe 2, and the second filter 204 is located in front of the second manual control valve 203. The first filter 104 and the second filter 204 can filter the gas input into the gas delivery pipe 1 and the hydrogen delivery pipe 2 to prevent impurities from affecting the mixing quality. The first filter 104 is a commonly used gas filtering mechanism on the market, and the second filter 204 is a commonly used hydrogen filtering mechanism on the market, and they will not be described in detail here.

[0037] As is well known to those skilled in the art, the working principles and wiring methods of the first solenoid valve 101, the first flow meter 102, the second solenoid valve 201 and the second flow meter 202 are commonplace, and are conventional means or common knowledge, so they will not be elaborated here. Those skilled in the art can select their models at will according to their needs or convenience.

[0038] Working principle: When in use, the gas is input to the gas mixing cylinder 3 through the gas delivery pipe 1, and the hydrogen is input to the gas mixing cylinder 3 through the hydrogen delivery pipe 2. During this period, the first flow meter 102 can detect the gas delivery flow, and the second flow meter 202 can detect the hydrogen delivery flow. The first solenoid valve 101 can automatically control the gas delivery amount of the gas delivery pipe 1, and the second solenoid valve 201 can automatically control the gas delivery amount of the gas delivery pipe 1. The gas and hydrogen delivery amounts are detected according to the first flow meter 102 and the second flow meter 202 respectively, and the gas and hydrogen delivery amounts are respectively carried out through the first solenoid valve 101 and the second solenoid valve 201 according to the set value, and the mixing ratio of the gas and hydrogen can be adjusted. When the gas and hydrogen are respectively delivered through the gas delivery pipe 1 The two air inlet pipes 301 on the mixing cylinder 3 simultaneously enter the cavity 303 set inside the sphere 302, so that the fuel gas and hydrogen can be mixed and counter-mixed inside the cavity 303, completing the primary mixing of the fuel gas and hydrogen, and discharged from the outlet pipe 304 to one end of the gas mixing cylinder 3. When the fuel gas and hydrogen mixed gas is filled into the counter-mixing groove 305 at one end of the gas mixing cylinder 3 and rebounds, it is counter-mixed with the gas just discharged from the outlet pipe 304 during the rebound process to complete the secondary mixing. Multiple guide plates 306 can further increase the mixing time of the fuel gas and hydrogen at the inner end of the gas mixing cylinder 3, and can further improve the mixing quality of the fuel gas and hydrogen, and finally output from the gas mixing delivery pipe 4 connected to the outlet pipe 304 at one end of the gas mixing cylinder 3.

[0039] The above description shows and describes several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A hydrogen energy utilization gas blending system with adjustable blending ratio, characterized in that: include: A gas delivery pipe (1) having a first solenoid valve (101) and a first flow meter (102) installed thereon; a hydrogen delivery pipe (2) on which a second solenoid valve (201) and a second flow meter (202) are installed; A gas mixing component, which is provided with two air inlets, and the two air inlets are respectively connected to the fuel gas delivery pipe (1) and the hydrogen delivery pipe (2); and a gas mixing and delivery pipe (4), which is in communication with the gas outlet of the gas mixing component; The gas mixing component comprises a gas mixing cylinder (3), two air inlet pipes (301) are integrally formed on the gas mixing cylinder (3), the air inlet ends of the two air inlet pipes (301) are fixedly connected to the air outlet ends of the fuel gas delivery pipe (1) and the hydrogen delivery pipe (2), the air outlet ends of the two air inlet pipes (301) are respectively extended into the interior of the gas mixing cylinder (3) and are fixedly connected to a sphere (302), the interior of the sphere (302) is provided with a cavity (303), the air outlet ends of the two air inlet pipes (301) are respectively connected to the cavity (303), one side of the sphere (302) is fixedly connected to an air outlet pipe (304), and the air outlet port of the air outlet pipe (304) faces and is close to the inner wall of one end of the gas mixing cylinder (3); A plurality of guide plates (306) arranged in a staggered manner are fixedly installed inside the gas mixing cylinder (3), and the guide plates (306) are located behind the sphere (302); a first manual control valve (103) is fixedly installed on the gas delivery pipe (1); a second manual control valve (203) is fixedly installed on the hydrogen delivery pipe (2); a first filter (104) is fixedly installed on the gas delivery pipe (1), and the first filter (104) is located in front of the first manual control valve (103); a second filter (204) is fixedly installed on the hydrogen delivery pipe (2), and the second filter (204) is located in front of the second manual control valve (203).

2. The hydrogen energy utilization gas blending system with adjustable blending ratio according to claim 1 is characterized in that: A counter-entry groove (305) is provided on the inner wall of one end of the gas mixing cylinder (3), and the opening of the counter-entry groove (305) faces the gas outlet port of the gas outlet pipe (304).

3. The hydrogen energy utilization gas blending system with adjustable blending ratio according to claim 2 is characterized in that: The two air inlet pipes (301) are respectively arranged at the top and bottom of the sphere (302), and the air outlet ports of the two air inlet pipes (301) are arranged opposite to each other.

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