Natural gas hydrogen-doped mixing device

Abstract

The utility model relates to the field of mixing devices, and discloses a natural gas hydrogen-doped mixing device which comprises a gas mixing pipeline, the right end of the gas mixing pipeline is fixedly provided with a connecting sealing plate through an arranged first bolt, and one side of the connecting sealing plate is fixedly provided with a main gas inlet pipeline. Two communicating connecting gas inlet pipes are fixedly installed at the end, away from the connecting sealing plate, of the main gas inlet pipeline, gas conveying pipelines are fixedly installed at the ends, away from the main gas inlet pipeline, of the two connecting gas inlet pipes correspondingly, and mixed gas enters the gas mixing pipeline; natural gas and hydrogen entering the pipeline can be fully mixed in the flowing process through the mixing twisted blades, the natural gas and hydrogen entering the pipeline through the gas conveying pipeline are preliminarily mixed through the main gas inlet pipeline and the connecting gas inlet pipe, and the mixing effect of the natural gas and the hydrogen is further enhanced through the mixing twisted blades.

Description

Technical Field

[0001] This application belongs to the field of mixing technology, specifically a natural gas hydrogen blending device. Background Technology

[0002] Hydrogen blending of natural gas refers to the technology of adding hydrogen to natural gas in a certain proportion during the transportation and use of natural gas to form a mixed gas. It aims to reduce carbon emissions and improve energy efficiency by utilizing the clean and efficient characteristics of hydrogen. At the same time, it can reduce dependence on traditional natural gas to a certain extent, optimize the energy structure, and improve the combustion characteristics of gas within a certain range, thereby improving combustion efficiency and safety. It is an important exploration and practice for the transformation of the energy sector towards a low-carbon and clean direction.

[0003] For example, utility model patent CN219482235U discloses a natural gas-hydrogen blending device, including a natural gas pipeline, a hydrogen pipeline, a shower head, and a connector fixed to one end of the hydrogen pipeline. The end of the hydrogen pipeline with the connector fixed thereto passes through the natural gas pipeline and extends into the interior of the natural gas pipeline. The shower head is connected to one end of the hydrogen pipeline through the connector. A blunt body for increasing the hydrogen diffusion surface is fixed at the front end of the nozzle of the shower head. This utility model increases the hydrogen diffusion surface by using the blunt body, so that both hydrogen and natural gas flow around the blunt body, enabling hydrogen to be quickly mixed in the natural gas pipeline, greatly shortening the dynamic mixing zone of natural gas and hydrogen, and improving the mixing efficiency of natural gas and hydrogen.

[0004] However, in actual use, it was found that although the bluff body in the device can improve the mixing effect of hydrogen and natural gas in the pipeline to a certain extent;

[0005] However, the hydrogen pipeline in the device will obstruct the natural gas flowing in the natural gas pipeline, making it difficult for the natural gas to fully contact the bluff body, thus affecting the mixing effect of natural gas and hydrogen. Therefore, a natural gas hydrogen blending device is provided. Utility Model Content

[0006] The purpose of this application is to provide a natural gas hydrogen blending device in order to solve the problems mentioned above.

[0007] The technical solution adopted in this application is as follows: A natural gas hydrogen blending device includes a gas mixing pipeline. A connecting sealing plate is fixedly installed at the right end of the gas mixing pipeline by a bolt. A main gas inlet pipeline is fixedly installed on one side of the connecting sealing plate. Two interconnected connecting gas inlet pipes are fixedly installed at the end of the main gas inlet pipeline away from the connecting sealing plate. A gas conveying pipeline is fixedly installed at the end of each of the two connecting gas inlet pipes away from the main gas inlet pipeline. Multiple mixing twisted blades are fixedly installed inside the gas mixing pipeline, and the multiple mixing twisted blades are installed in a staggered manner.

[0008] In a preferred embodiment, an exhaust pipe is fixedly installed at the left end of the gas mixing pipe by a bolt, and a mixed gas monitoring sensor is fixedly installed at the end of the exhaust pipe away from the gas mixing pipe, with the monitoring end of the mixed gas monitoring sensor extending into the interior of the exhaust pipe.

[0009] In a preferred embodiment, a pressure relief valve is fixedly installed on the outer surface of the gas delivery pipeline.

[0010] In a preferred embodiment, a pipe support is fixedly installed near the top outer surface of the gas mixing pipe, and multiple fixing bolts are movably inserted through the inner bottom surface of the pipe support.

[0011] In a preferred embodiment, a connecting exhaust pipe is fixedly installed near the top outer surface of the exhaust pipe, and a mixed gas discharge pipe is fixedly installed at the bottom end of the connecting exhaust pipe.

[0012] In a preferred embodiment, a rubber buffer pad is fixedly installed on the bottom surface of the pipe support.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0014] 1. In this application, due to the adoption of the above-mentioned scheme, natural gas and hydrogen flow into the interior of the connecting inlet pipe and the main inlet pipe through the gas transmission pipe for preliminary mixing. Subsequently, the mixed gas enters the interior of the gas mixing pipe. When the mixed gas flows in the gas mixing pipe, the mixing twisting blades will make the natural gas and hydrogen entering the pipe fully mixed during the flow. The device enables the natural gas and hydrogen entering through the gas transmission pipe to be initially mixed through the main inlet pipe and the connecting inlet pipe, while the mixing twisting blades further enhance the mixing effect of the two. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 This is a schematic diagram of the internal structure of the gas mixing pipeline of this application;

[0017] Figure 3 This is a schematic diagram of the hybrid twisted blade structure without installation according to this application;

[0018] Figure 4 This is a schematic diagram of the exhaust pipe structure of this application.

[0019] The markings in the diagram are: 1. Gas mixing pipe; 2. Connecting sealing plate; 3. Main intake pipe; 4. Connecting intake pipe; 5. Gas delivery pipe; 6. Mixing twist blade; 7. Exhaust pipe; 8. Mixed gas monitoring sensor; 9. Pressure relief valve; 10. Pipe support; 11. Connecting exhaust pipe; 12. Rubber buffer pad. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] refer to Figure 1 A natural gas hydrogen blending device includes a gas mixing pipeline 1. A pipeline support 10 is fixedly installed near the top outer surface of the gas mixing pipeline 1. Multiple fixing bolts are movably inserted through the inner bottom surface of the pipeline support 10. A rubber buffer pad 12 is fixedly installed on the bottom surface of the pipeline support 10. The arrangement of the pipeline support 10 and fixing bolts facilitates the installation and fixation of the gas mixing pipeline 1 in a suitable position. The rubber buffer pad 12 not only enhances the stability of the pipeline support 10, but also has a certain shock absorption effect.

[0022] refer to Figure 1 , Figure 2 and Figure 3 A connecting sealing plate 2 is fixedly installed on the right end of the gas mixing pipe 1 by a bolt. A main air intake pipe 3 is fixedly installed on one side of the connecting sealing plate 2. Two interconnected connecting air intake pipes 4 are fixedly installed on the end of the main air intake pipe 3 away from the connecting sealing plate 2. A gas delivery pipe 5 is fixedly installed on the end of each of the two connecting air intake pipes 4 away from the main air intake pipe 3. A pressure relief valve 9 is fixedly installed on the outer surface of the gas delivery pipe 5. One of the gas delivery pipes 5 installed on the two connecting air intake pipes 4 is a natural gas delivery pipe and the other is a hydrogen delivery pipe. This facilitates the mixing of natural gas and hydrogen. The pressure relief valve 9 facilitates pressure relief when the gas pressure inside the gas delivery pipe 5 is too high, thereby improving safety.

[0023] refer to Figure 2 , Figure 3 and Figure 4 Multiple mixing twisted blades 6 are fixedly installed inside the gas mixing pipeline 1, and the multiple mixing twisted blades 6 are all installed in a staggered manner; by setting multiple staggered mixing twisted blades 6, the natural gas and hydrogen entering the gas mixing pipeline 1 can be fully mixed during the flow process, thereby improving the mixing efficiency of natural gas and hydrogen.

[0024] refer to Figure 2 , Figure 3 and Figure 4 An exhaust pipe 7 is fixedly installed at the left end of the gas mixing pipe 1 by two bolts. A mixed gas monitoring sensor 8 is fixedly installed at the end of the exhaust pipe 7 away from the gas mixing pipe 1, and the monitoring end of the mixed gas monitoring sensor 8 extends into the interior of the exhaust pipe 7. The exhaust pipe 7 facilitates the entry of the mixed gas of natural gas and hydrogen into the pipe, thus facilitating subsequent discharge operations. The mixed gas monitoring sensor 8 can be an infrared absorption sensor, which can determine the gas concentration by detecting the absorption characteristics of different gases to infrared light of specific wavelengths. The main components of natural gas, methane and hydrogen, have unique absorption spectra at specific wavelengths. When infrared light passes through the mixed gas, the corresponding wavelength of light is absorbed. The gas concentration is determined by detecting the change in light intensity. Infrared absorption sensors are readily available devices in reality. This application only uses them without modifying their structure, so they will not be described in detail here.

[0025] refer to Figure 1 , Figure 2 and Figure 3 The exhaust pipe 7 is fixedly installed with a connecting exhaust pipe 11 near the top outer surface, and a mixed gas discharge pipe is fixedly installed at the bottom end of the connecting exhaust pipe 11; the connecting exhaust pipe 11 and the mixed gas discharge pipe facilitate the discharge of the mixed gas of natural gas and hydrogen for subsequent use.

[0026] The implementation principle of a natural gas-hydrogen blending device according to this application is as follows: Natural gas and hydrogen flow into the interior of the gas conveying pipe 5, which is connected to the inlet pipe 4 and the main inlet pipe 3. After preliminary mixing in the gas, they enter the interior of the gas mixing pipe 1. When the mixed gas flows in the gas mixing pipe 1, multiple staggered mixing twisted blades 6 ensure that the natural gas and hydrogen entering the pipe are fully mixed during the flow process, thereby improving the mixing efficiency. Subsequently, the mixed gas enters the exhaust pipe 7 and is discharged through the exhaust pipe 11 for subsequent use. This device enables the natural gas and hydrogen entering through the gas conveying pipe 5 to be initially mixed through the main inlet pipe 3 and the inlet pipe 4, while the mixing twisted blades 6 further enhance the mixing effect of the two.

[0027] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A hydrogen-mixing device for natural gas, comprising a gas mixing conduit (1), characterized in that: The right end of the gas mixing pipeline (1) is fixedly installed with a connecting sealing plate (2) through the setting of a bolt, one side of the connecting sealing plate (2) is fixedly installed with a main air inlet pipeline (3), the end of the main air inlet pipeline (3) away from the connecting sealing plate (2) is fixedly installed with two connected air inlet connecting pipes (4), the ends of the two air inlet connecting pipes (4) away from the main air inlet pipeline (3) are fixedly installed with gas conveying pipelines (5), the inside of the gas mixing pipeline (1) is fixedly installed with a plurality of mixed twist blades (6), and the plurality of mixed twist blades (6) are installed in a staggered manner, the left end of the gas mixing pipeline (1) is fixedly installed with an exhaust pipeline (7) through the setting of a bolt two, the end of the exhaust pipeline (7) away from the gas mixing pipeline (1) is fixedly installed with a mixed gas monitoring sensor (8), and the monitoring end of the mixed gas monitoring sensor (8) extends to the inside of the exhaust pipeline (7).

2. The hydrogen-blended natural gas mixing device of claim 1, wherein: The outer surface of the gas conveying pipeline (5) is fixedly installed with a pressure relief valve (9).

3. The hydrogen-blended natural gas mixing device of claim 1, wherein: The gas mixing pipeline (1) is fixedly installed with a pipeline support (10) near the outer surface of the top, a plurality of fixed bolts are movably arranged on the inside bottom surface of the pipeline support (10).

4. The hydrogen-blend device of claim 1, wherein: The exhaust pipeline (7) is fixedly installed with a connecting exhaust pipe (11) near the outer surface of the top, and the bottom end of the connecting exhaust pipe (11) is fixedly installed with a mixed gas exhaust pipe.

5. The hydrogen-blend device of claim 3, wherein: The bottom surface of the pipeline support (10) is fixedly installed with a rubber buffer pad (12).

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