Natural gas hydrogen-doped mixer

Abstract

The hydrogen-doped natural gas mixer comprises a mixing pipe, the two ends of the mixing pipe are communicated with an exhaust pipe and a two-way pipe respectively, a gas hole adjusting mechanism is rotationally installed on the upper surface of the two-way pipe, and a butt joint pipe is rotationally installed on the upper surface of the gas hole adjusting mechanism; the two groups of butt joint pipes are communicated with the natural gas supply machine and the hydrogen-doped supply machine through flanges, and a plurality of groups of X-shaped curving plates are arranged in the mixing pipe and are communicated in the mixing pipe, so that a static mixer is formed between the X-shaped curving plates and the mixing pipe. Through the design of the gas hole adjusting mechanism, natural gas and doped hydrogen with the adjustable proportion, and by adjusting and controlling the proportion, the mixing proportion can be adjusted according to the optimal requirements of different combustion devices and processes, it is ensured that the devices run in the optimal state, the mixing proportion is accurately controlled, complete combustion can be ensured, and generation of harmful gas is reduced; and the combustion efficiency and the safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas hydrogen blending mixers, in particular to a natural gas hydrogen blending mixer. Background Art

[0002] In recent years, with increasingly stringent environmental protection policies, the hydrogen energy utilization industry is poised for rapid growth and expansion. By building a hydrogen energy industry chain, we can promote the overall development of the new energy industry, establish demonstration projects for high-end new energy applications, and comprehensively upgrade the energy consumption structure. Natural gas blending with hydrogen is a primary form of hydrogen energy utilization. This process involves injecting hydrogen produced by electrolysis of renewable energy or 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 "hydrogen energy and the gas grid."

[0003] For example, the patent with national authorization announcement number CN114931869A discloses a natural gas hydrogen blender, comprising a natural gas inlet flange, a mixer housing fixedly connected to one side of the natural gas inlet flange, a hydrogen inlet injection pipe extending through the mixer housing, a fixed guide vane assembly mounted within the mixer housing, the fixed guide vane assembly located at the end of the hydrogen inlet injection pipe distal from the natural gas inlet flange, a baffle mixing module detachably connected to the mixer housing, and a natural gas outlet flange fixedly connected to one end of the mixer housing. The present invention achieves rapid and effective initial gas mixing, thereby increasing the uniformity of the mixed gas without increasing the pressure loss of the hydrogen pipeline. Furthermore, the present invention can simultaneously change the airflow channel and achieve secondary blending. After the secondary blending, the mixed gas enters the baffle mixing module.

[0004] However, the above-mentioned natural gas hydrogen mixer does not allow workers to adjust the mixing ratio of natural gas and hydrogen according to process requirements during the natural gas hydrogen mixing process. Different combustion equipment and processes have different optimal requirements for the mixing ratio of natural gas and hydrogen. If the ratio is fixed, some equipment will not be able to achieve the optimal combustion state, and it will also cause incomplete combustion, produce harmful gases such as carbon monoxide, and affect combustion efficiency and safety. Utility Model Content

[0005] The purpose of the utility model is to provide a natural gas hydrogen blending mixer to solve the problem raised in the above background technology that the staff cannot adjust the discharge ratio of natural gas and hydrogen blending according to process requirements.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The natural gas hydrogen blending mixer comprises: a mixing tube, wherein the exhaust pipe and the two-way tube are connected and installed at both ends of the mixing tube, an air hole adjustment mechanism is rotatably installed on the upper surface of the two-way tube, and a butt joint tube is rotatably installed on the upper surface of the air hole adjustment mechanism, and two sets of the butt joint tubes are connected and installed with the natural gas supply machine and the hydrogen blending supply machine through flanges;

[0008] Wherein, a plurality of groups of X-shaped curved plates are arranged in the mixing tube, and the plurality of groups of X-shaped curved plates are connected in the mixing tube, so that a static mixer is formed between the X-shaped curved plates and the mixing tube.

[0009] Preferably, the air hole adjustment mechanism includes a conical disk, which is respectively fixedly mounted on the lower surface of the butt-jointing tube and the upper surface of the double-pass tube, and a connecting disk is fixedly mounted inside the conical disk, and a vent is provided inside the connecting disk, and a hand wheel is installed between the two groups of connecting disks for damping rotation, and a covering disk is fixedly mounted inside the hand wheel, and a connecting port is provided inside the covering disk.

[0010] Preferably, the hand wheel can drive the communicating port to be opposite to and connected with the vent of the connecting disk, and can also drive the covering disk to be opposite to and block the vent.

[0011] Preferably, connecting columns are fixedly mounted on the upper and lower surfaces of the covering plate, and the covering plate is rotatably mounted between the two groups of connecting plates via the connecting columns on the upper and lower surfaces.

[0012] Preferably, sealing rings are fixedly mounted on the expansion surfaces of the two groups of conical disks, and the conical disks are rotatably mounted in sealing grooves through the sealing rings, and the sealing grooves are opened at the upper and lower surfaces of the handwheel.

[0013] Preferably, a pointer is fixedly mounted on the upper surface of the handwheel, the pointer is tilted and fits on the surface of the conical disk on the lower surface of the docking tube, the pointer is flush with the gas meter, the gas meter is fixedly mounted on the outer surface of the docking tube, and the gas meter is arranged from short to long.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. Through the design of the double-pass pipe, mixing pipe, X-shaped curved plate and exhaust pipe, during the mixing process of natural gas and hydrogen, workers can adjust the air inlet diameters of the two sets of air hole adjustment mechanisms according to process requirements. When the wind speed of natural gas and hydrogen is the same, the air hole adjustment mechanism with a larger diameter will have a larger air intake volume, while the air hole adjustment mechanism with a smaller diameter will have a smaller air intake volume, thereby achieving free control of the intake ratio of natural gas and hydrogen. Subsequently, natural gas and hydrogen can enter the mixing pipe from the two pipe openings of the double-pass pipe through the air hole adjustment mechanism respectively. The cross-shaped X-shaped curved plate flow channel in the mixing pipe will disperse and stir the natural gas and hydrogen, ultimately achieving a uniform mixing effect. The mixed natural gas and hydrogen will be discharged from the exhaust pipe for combustion.

[0016] By adjusting the proportion of natural gas and hydrogen, the mixing ratio can be adjusted according to the optimal requirements of different combustion equipment and processes to ensure that the equipment operates in the best condition. By precisely controlling the mixing ratio, complete combustion can be guaranteed, the generation of harmful gases can be reduced, and combustion efficiency and safety can be improved.

[0017] 2. Through the design of the vent, handwheel, connecting port, cover plate, pointer and gas meter, during the mixing of natural gas and hydrogen, the staff can rotate the handwheel to drive the cover plate to rotate between the connecting plates according to the process requirements. The cover plate will block and cover the vent during the rotation, and the remaining vent will be connected flush with the connecting port, thereby reducing the size of the vent hole. If the handwheel is rotated to drive the cover plate to be flush with the connecting plate, the connecting port opened on the cover plate will be flush with the complete vent, which is the largest vent hole at this time. In the process of rotating the handwheel to reduce the vent, the pointer will also be driven to rotate together, and the pointer will point to the gradually shortening gas meter, thereby enabling the staff to understand the current situation. The ventilation volume of the front vent, and after the size of the vent is adjusted, natural gas and hydrogen can be supplied. The natural gas and hydrogen entering the docking pipe will have different proportions of natural gas and hydrogen entering the double-pass pipe due to the different sizes of the vents, and different proportions of natural gas and hydrogen will enter the mixing pipe for mixing, and the mixed natural gas and hydrogen will be discharged from the exhaust pipe for combustion. The adjustable proportion of natural gas and hydrogen allows users to adjust the mixing ratio according to actual needs and specific application scenarios, provide personalized solutions, improve user experience and satisfaction, and enable them to adjust the natural gas and hydrogen ratio according to actual needs, avoid unnecessary waste, and optimize energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the mixing pipe, exhaust pipe and two-way pipe of the present invention;

[0019] Figure 2 This is a schematic diagram of the X-shaped curved plate structure of the present invention;

[0020] Figure 3 This is a schematic structural diagram of a gas meter according to the present invention;

[0021] Figure 4 This is a structural diagram of the butt joint pipe of the present utility model;

[0022] Figure 5 This is a schematic structural diagram of the air hole adjustment mechanism of the present utility model.

[0023] In the figure: 1. mixing tube; 101. exhaust pipe; 102. two-way pipe; 103. butt-jointed tube; 104. X-shaped curved plate; 105. gas meter; 2. air hole adjustment mechanism; 201. conical disk; 202. sealing ring; 203. vent; 204. hand wheel; 205. connecting port; 206. covering disk; 207. connecting column; 208. pointer; 209. connecting disk; 210. sealing groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 5 , this embodiment provides the following technical solutions:

[0026] like Figures 1-4 As shown, the natural gas hydrogen blending mixer comprises: a mixing tube 1, with an exhaust pipe 101 and a two-way pipe 102 connected and installed at both ends respectively; an air hole adjustment mechanism 2 is rotatably mounted on the upper surface of the two-way pipe 102; a butt joint pipe 103 is rotatably mounted on the upper surface of the air hole adjustment mechanism 2; two sets of butt joint pipes 103 are connected and installed with a natural gas supply machine and a hydrogen blending machine through flanges;

[0027] Among them, multiple groups of X-shaped curved plates 104 are arranged in the mixing tube 1, and the multiple groups of X-shaped curved plates 104 are connected in the mixing tube 1, so that a static mixer is formed between the X-shaped curved plates 104 and the mixing tube 1.

[0028] Through the design of the double-pass pipe 102, the mixing pipe 1, the X-shaped curved plate 104 and the exhaust pipe 101, during the mixing process of natural gas and mixed hydrogen, the staff can adjust the size of the air inlet diameter of the two sets of pore adjustment mechanisms 2 according to the process requirements. When the wind speed of the natural gas and mixed hydrogen is the same, the pore adjustment mechanism 2 with a larger diameter will have a larger air intake volume, while the pore adjustment mechanism 2 with a smaller diameter will have a smaller air intake volume, thereby achieving free control of the intake ratio of natural gas and mixed hydrogen. Subsequently, the natural gas and mixed hydrogen can enter the mixing pipe 1 from the two pipe openings of the double-pass pipe 102 through the pore adjustment mechanism 2 respectively, and the cross-shaped X-shaped curved plate 104 flow channel in the mixing pipe 1 will break up and stir the natural gas and mixed hydrogen, ultimately achieving a uniform mixing effect. The mixed natural gas and mixed hydrogen will be discharged from the exhaust pipe 101 for combustion.

[0029] By adjusting the proportion of natural gas and hydrogen, the mixing ratio can be adjusted according to the optimal requirements of different combustion equipment and processes to ensure that the equipment operates in the best condition. By precisely controlling the mixing ratio, complete combustion can be guaranteed, the generation of harmful gases can be reduced, and combustion efficiency and safety can be improved.

[0030] like Figure 5 As shown, the air hole adjustment mechanism 2 includes a conical disk 201, which is fixedly mounted on the lower surface of the butt-jointing tube 103 and the upper surface of the double-pass tube 102, respectively. A connecting disk 209 is fixedly mounted in the conical disk 201, and a vent 203 is provided in the connecting disk 209. A hand wheel 204 is installed between the two sets of connecting disks 209 for damping rotation, and a covering disk 206 is fixedly mounted in the hand wheel 204, and a connecting port 205 is provided in the covering disk 206.

[0031] The hand wheel 204 can drive the communicating port 205 to be opposite to and communicate with the vent 203 of the connecting disk 209 , and can also drive the covering disk 206 to be opposite to and block the vent 203 .

[0032] Connecting posts 207 are fixedly mounted on the upper and lower surfaces of the covering plate 206 . The covering plate 206 is rotatably mounted between the two sets of connecting plates 209 via the connecting posts 207 on the upper and lower surfaces.

[0033] Sealing rings 202 are fixedly mounted on the expansion surfaces of the two sets of conical disks 201 . The conical disks 201 are rotatably mounted in sealing grooves 210 through the sealing rings 202 . The sealing grooves 210 are provided on the upper and lower surfaces of the hand wheel 204 .

[0034] A pointer 208 is fixedly mounted on the upper surface of the handwheel 204. The pointer 208 is tilted and fits on the surface of the conical disk 201 on the lower surface of the docking tube 103. The pointer 208 is flush with the gas meter 105. The gas meter 105 is fixedly mounted on the outer surface of the docking tube 103. The gas meter 105 is arranged from short to long.

[0035] Through the design of the vent 203, handwheel 204, connecting port 205, covering plate 206, pointer 208 and gas meter 105, in the process of mixing natural gas and hydrogen, the staff can rotate the handwheel 204 according to the process requirements to drive the covering plate 206 to rotate between the connecting plates 209. The covering plate 206 will block and cover the vent 203 during the rotation process, and the remaining vent 203 will be flush with the connecting port 205, thereby reducing the size of the pore of the vent 203. If the handwheel 204 is rotated to drive the covering plate 206 to be flush with the connecting plate 209, the connecting port 205 opened on the covering plate 206 will be flush with the complete vent 203, which is the largest pore of the vent 203. In the process of rotating the handwheel 204 to reduce the vent 203, it will also drive the pointer 208 to rotate together, and the pointer 20 8 will point to the gradually shortening gas volume meter 105, so that the staff can understand the current ventilation volume of the vent 203. After the size of the vent 203 is adjusted, natural gas and hydrogen can be supplied. The natural gas and hydrogen entering the butt-joint pipe 103 will have different proportions of natural gas and hydrogen due to the different sizes of the vent 203. Natural gas and hydrogen in different proportions will enter the dual-pass pipe 102, and will enter the mixing pipe 1 for mixing. The mixed natural gas and hydrogen will be discharged from the exhaust pipe 101 for combustion. The adjustable proportions of natural gas and hydrogen allow users to adjust the mixing ratio according to actual needs and specific application scenarios, provide personalized solutions, improve user experience and satisfaction, and enable users to adjust the natural gas and hydrogen ratio according to actual needs, avoid unnecessary waste, and optimize energy efficiency.

[0036] According to the above technical solution, the working steps of this solution are summarized and sorted out: in the process of mixing natural gas and hydrogen, the staff can rotate the hand wheel 204 according to the process requirements to drive the cover plate 206 to rotate between the connecting plates 209, and the cover plate 206 will block and cover the vent 203 during the rotation, and the remaining vent 203 will be flush with the connecting port 205, thereby reducing the size of the pores of the vent 203. If the hand wheel 204 is rotated to drive the cover plate 206 to be flush with the connecting plate 209, the connecting port 205 opened on the cover plate 206 will be flush with the complete vent 203, which is the largest pore of the vent 203. In the process of rotating the hand wheel 204 to reduce the vent 203, It will drive the pointer 208 to rotate together, and the pointer 208 will point to the gradually shortening gas meter 105, so that the staff can understand the current ventilation volume of the vent 203. After the size of the vent 203 is adjusted, natural gas and hydrogen can be supplied. The natural gas and hydrogen entering the butt-joint pipe 103 will enter the double-pass pipe 102 in different proportions due to the different sizes of the vent 203, and the natural gas and hydrogen in different proportions will enter the mixing pipe 1. The cross-shaped X-shaped curved plate 104 flow channel in the mixing pipe 1 will break up and stir the natural gas and hydrogen, and finally achieve a uniform mixing effect. The mixed natural gas and hydrogen will be discharged from the exhaust pipe 101 for combustion.

[0037] In summary: By adjusting the proportion of natural gas and hydrogen, the mixing ratio can be adjusted according to the optimal requirements of different combustion equipment and processes to ensure that the equipment operates in the best condition. By precisely controlling the mixing ratio, complete combustion can be guaranteed, the generation of harmful gases can be reduced, and combustion efficiency and safety can be improved.

[0038] Any portion not described in the present invention is the same as the prior art or can be implemented using the prior art. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Natural gas hydrogen blender, characterized in that: include: A mixing tube (1), wherein both ends of the mixing tube (1) are connected and installed with an exhaust pipe (101) and a double-way pipe (102), an air hole adjustment mechanism (2) is rotatably installed on the upper surface of the double-way pipe (102), and a butt-joint pipe (103) is rotatably installed on the upper surface of the air hole adjustment mechanism (2), and two groups of the butt-joint pipes (103) are connected and installed with a natural gas supply machine and a hydrogen blending supply machine through flanges; Wherein, a plurality of groups of X-shaped curved plates (104) are provided in the mixing tube (1), and the plurality of groups of X-shaped curved plates (104) are connected in the mixing tube (1), so that a static mixer is formed between the X-shaped curved plates (104) and the mixing tube (1).

2. The natural gas hydrogen blender according to claim 1, characterized in that: The air hole adjustment mechanism (2) comprises a conical disk (201), wherein the conical disk (201) is fixedly mounted on the lower surface of the butt-jointed tube (103) and the upper surface of the double-pass tube (102), respectively; a connecting disk (209) is fixedly mounted in each of the conical disks (201), and a vent (203) is provided in the connecting disk (209); a hand wheel (204) is rotatably mounted between two sets of the connecting disks (209) in a damping manner; a covering disk (206) is fixedly mounted in the hand wheel (204), and a communication port (205) is provided in the covering disk (206).

3. The natural gas hydrogen blender according to claim 2, characterized in that: The hand wheel (204) can drive the communication port (205) to be opposite to and connected with the vent (203) of the connection disk (209), and can also drive the covering disk (206) to be opposite to and block the vent (203).

4. The natural gas hydrogen blender according to claim 2, characterized in that: Connecting columns (207) are fixedly mounted on the upper and lower surfaces of the covering disk (206), and the covering disk (206) is mounted between two sets of connecting disks (209) in a damped rotation manner via the connecting columns (207) on the upper and lower surfaces.

5. The natural gas hydrogen blender according to claim 2, characterized in that: Sealing rings (202) are fixedly mounted on the expansion surfaces of the two groups of conical discs (201). The conical discs (201) are rotatably mounted in sealing grooves (210) through the sealing rings (202). The sealing grooves (210) are opened on the upper and lower surfaces of the hand wheel (204).

6. The natural gas hydrogen blender according to claim 5, characterized in that: A pointer (208) is fixedly mounted on the upper surface of the hand wheel (204), and the pointer (208) is tilted and fitted on the surface of the conical disk (201) on the lower surface of the butt joint (103). The pointer (208) is flush with the gas meter (105), and the gas meter (105) is fixedly mounted on the outer surface of the butt joint (103). The gas meter (105) is arranged from short to long.

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