Natural gas hydrogen-doped flow adjusting device

Abstract

The invention relates to the field of chemical engineering, and discloses a natural gas hydrogen-doped flow adjusting device which comprises a mounting box, a hydrogen tank, a mixing tank and a natural gas tank are sequentially mounted in the mounting box from left to right, a mixing mechanism is arranged in the mixing tank, and a ventilation and heat dissipation mechanism is arranged on the outer side of the mounting box. A fourth connecting pipe and a hydrogen inlet pipe are sequentially and fixedly connected to the outer side of the hydrogen tank from top to bottom, a second connecting pipe, a third connecting pipe and a gas outlet pipe are fixedly connected to the outer side of the mixing tank, and the second connecting pipe is located above the third connecting pipe and the gas outlet pipe. By adopting the leakage alarm mechanism driven by the air bag, when gas leakage occurs at the joint of the flange plate, the air bag pushes the conductive plate to trigger the alarm lamp. By means of the design, leaked gas can be rapidly stored, the spontaneous combustion risk is avoided, safety and emergency treatment efficiency are improved through instant response, and compared with a static alarm mode in the prior art, higher efficiency and higher reliability are achieved.

Description

Technical Field

[0001] The present invention relates to the field of chemical engineering, and particularly to a flow regulating device for hydrogen-doped natural gas. Background Art

[0002] Hydrogen-doped natural gas is a new energy technology. By mixing natural gas and hydrogen in a certain proportion, it can not only reduce environmental pollution but also improve energy utilization efficiency. The mixing process of hydrogen and natural gas relies on a flow regulating device to precisely control the mixing ratio of the two, so as to ensure fuel quality and usage effect.

[0003] The flow regulating device for hydrogen-doped natural gas belongs to the technical field of gas mixing and distribution systems and is widely used in hydrogen energy and natural gas hybrid energy supply systems. Its main function is to control the mixing ratio and flow rate of hydrogen and natural gas to ensure that the output gas meets the predetermined combustion and distribution requirements. This device is widely used in distributed energy stations, hydrogen energy adaptation transformation projects of gas pipe networks, and scenarios of combined application of hydrogen energy and natural gas, and has good industry development prospects and application value.

[0004] However, there are some deficiencies in the existing flow regulating equipment for hydrogen-doped natural gas. First, if gas leakage occurs at the connection, it is difficult for the existing equipment to trigger an alarm in a timely manner, and it relies on external detection means, which is prone to response lag, thus bringing certain safety hazards. Second, the gas mixing part of many devices has a simple structure and often adopts a static mixing or one-way flow mode, with a slow mixing rate, unsatisfactory mixing effect, and easy concentration stratification. Finally, the equipment has insufficient design in temperature management, lacks effective heat dissipation channels, and is prone to performance fluctuations under high-temperature or long-term operation conditions, and even key components may fail, affecting the stability and service life of the system.

[0005] Therefore, the present invention proposes a flow regulating device for hydrogen-doped natural gas to solve the deficiencies of the prior art. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a flow regulating device for hydrogen-doped natural gas, which solves the problems of lack of timely alarm in case of gas leakage, safety hazards, low mixing rate, and insufficient heat dissipation of the equipment.

[0007] To achieve the above object, the present invention is implemented through the following technical solutions: A flow regulating device for hydrogen-doped natural gas includes an installation box. Inside the installation box, a hydrogen tank, a mixing tank, and a natural gas tank are installed in sequence from left to right. A mixing mechanism is provided inside the mixing tank, and a ventilation and heat dissipation mechanism is provided outside the installation box. The hydrogen tank is fixedly connected with a fourth connecting pipe and a hydrogen inlet pipe from top to bottom. The mixing tank is fixedly connected with a second connecting pipe, a third connecting pipe, and an outlet pipe. And the second connecting pipe is located above the third connecting pipe and the outlet pipe. The natural gas tank is fixedly connected with a natural gas inlet pipe and a first connecting pipe from top to bottom. A first electromagnetic flow regulating valve is installed between the fourth connecting pipe and the third connecting pipe through a flange. A second electromagnetic flow regulating valve is installed between the second connecting pipe and the first connecting pipe through a flange. A leakage alarm mechanism is provided outside the flange.

[0008] Preferably, the leakage alarm mechanism includes an airbag. The airbag is sleeved outside the flange. An elastic ring is fixedly connected to the outside of the airbag. A clamping shell is provided outside the airbag. A support column is provided at the top of the airbag. The top of the support column is fixedly connected with a conductive plate. Connecting rods are fixedly connected to both sides of the conductive plate. A chute corresponding to the connecting rod is provided on the inner wall of the clamping shell. A plastic spring is provided between the inner top wall of the clamping shell and the conductive plate. An alarm lamp is installed on the top of the clamping shell. Two conductive terminals are fixedly connected to the bottom of the alarm lamp.

[0009] Preferably, the mixing mechanism includes a motor. The motor is installed on the top of the mixing tank. The output end of the motor penetrates the top of the mixing tank and is fixedly connected with a square column. A circular column is fixedly connected to the bottom of the square column. A sleeve is slidably connected to the outside of the square column. An inclined plate is fixedly connected to the outside of the sleeve. A plurality of arc-shaped plates are fixedly connected to the outside of the sleeve and are located below the inclined plate. A fixed column is fixedly connected to the inner top wall of the mixing tank. An upper roller and a lower roller are fixedly connected to the outside of the fixed column from top to bottom. A base is fixedly connected to the inner bottom wall of the mixing tank.

[0010] Preferably, the ventilation and heat dissipation mechanism includes at least one cooling fan. The cooling fan is installed on the top of the installation box. A plurality of ventilation slots are provided on the outside of the installation box.

[0011] Preferably, a sealing door is installed on the outside of the installation box. A handle is fixedly connected to the outside of the sealing door. A barometer is installed on the top of the mixing tank.

[0012] Preferably, the airbag is located in the middle of the clamping shell, and the clamping shell is clamped outside the flange.

[0013] Preferably, the connecting rod is slidably connected inside the chute, and the conductive plate is slidably connected inside the clamping shell.

[0014] Preferably, the swash plate is slidably connected between the upper roller and the lower roller, and the circular column is rotatably connected inside the base.

[0015] Preferably, the arc-shaped plate is rotatably connected inside the mixing tank.

[0016] Preferably, the conductive terminal penetrates through the top of the clip shell, and the conductive terminal is electrically connected to the conductive plate.

[0017] The present invention provides a flow regulating device for natural gas doped with hydrogen. It has the following beneficial effects: 1. By adopting an airbag-driven leakage alarm mechanism, when gas leakage occurs at the flange connection, the airbag pushes the conductive plate upward to contact the conductive terminal, thereby triggering the alarm light to give a warning. This design ensures that the leaked gas can be quickly stored, avoiding the risk of spontaneous combustion of the leaked gas. Compared with the common static alarm methods in the prior art, the present invention improves safety and emergency handling efficiency through instant response.

[0018] 2. Through the mixing mechanism, driven by electric rotation, the cooperation between the square column and the square sleeve enables the sleeve to move up and down during rotation, enhancing the mixing speed and uniformity. Compared with the traditional static mixing method, this design greatly improves the mixing rate of hydrogen and natural gas, optimizing the gas mixing effect and the overall working efficiency of the system.

[0019] 3. By combining the design of ventilation slots and cooling fans, the interior of the device is always maintained at a suitable ambient temperature, effectively preventing the influence of high temperature on the device. Compared with the common heat dissipation-inadequate solutions in the prior art, the present invention ensures the long-term stable operation of the device and extends its service life by optimizing the heat dissipation path. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the first perspective three-dimensional view of the present invention; Figure 2 is the internal schematic diagram of the present invention; Figure 3 is the second perspective three-dimensional view of the present invention; Figure 4 is the schematic diagram of the first electromagnetic flow regulating valve of the present invention; Figure 5 is the schematic diagram of the airbag of the present invention; Figure 6 is Figure 5 the enlarged schematic diagram at A in Figure 7 is the schematic diagram of the second electromagnetic flow regulating valve of the present invention; Figure 8 Schematic cross-sectional view of the mixing tank of the present invention; Figure 9 is Figure 8 Enlarged schematic view at position B in; Figure 10 is Figure 8 Enlarged schematic view at position C in.

[0021] Among them, 1. Installation box; 2. Natural gas inlet pipe; 3. Handle; 4. Sealed door; 5. Hydrogen inlet pipe; 6. Cooling fan; 7. Ventilation slot; 8. First electromagnetic flow regulating valve; 9. Second electromagnetic flow regulating valve; 10. First connecting pipe; 11. Natural gas tank; 12. Mixing tank; 13. Third connecting pipe; 14. Fourth connecting pipe; 15. Hydrogen tank; 16. Outlet pipe; 17. Flange; 18. Airbag; 19. Elastic ring; 20. Clamp shell; 21. Alarm lamp; 22. Slide groove; 23. Plastic spring; 24. Support column; 25. Conductive plate; 26. Connecting rod; 27. Conductive terminal; 28. Second connecting pipe; 29. Barometer; 30. Motor; 31. Sleeve; 32. Arc plate; 33. Fixed column; 34. Upper roller; 35. Lower roller; 36. Swash plate; 37. Square column; 38. Round column; 39. Base. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to the attached Figure 1 -attached Figure 10, an embodiment of the present invention provides a flow regulating device for hydrogen-doped natural gas, which includes an installation box 1. Inside the installation box 1, a hydrogen tank 15, a mixing tank 12, and a natural gas tank 11 are installed in sequence from left to right. A mixing mechanism is arranged inside the mixing tank 12, and a ventilation and heat dissipation mechanism is arranged outside the installation box 1. A fourth connecting pipe 14 and a hydrogen inlet pipe 5 are fixedly connected to the outside of the hydrogen tank 15 from top to bottom in sequence. A second connecting pipe 28, a third connecting pipe 13, and an outlet pipe 16 are fixedly connected to the outside of the mixing tank 12, and the second connecting pipe 28 is located above the third connecting pipe 13 and the outlet pipe 16. A natural gas inlet pipe 2 and a first connecting pipe 10 are fixedly connected to the outside of the natural gas tank 11 from top to bottom in sequence. A first electromagnetic flow regulating valve 8 is installed between the fourth connecting pipe 14 and the third connecting pipe 13 through a flange 17. A second electromagnetic flow regulating valve 9 is installed between the second connecting pipe 28 and the first connecting pipe 10 through a flange 17. A leakage alarm mechanism is arranged outside the flange 17. A sealing door 4 is installed outside the installation box 1, and a handle 3 is fixedly connected to the outside of the sealing door 4. A barometer 29 is installed on the top of the mixing tank 12.

[0024] Specifically, the installation box 1 is used to install and fix the main components inside the device, and at the same time provide a relatively sealed and safe working space for them; the hydrogen tank 15 is used to store and supply hydrogen, which is the source of hydrogen in the device; the natural gas tank 11 is used to store and supply natural gas, which is the source of natural gas; the mixing tank 12 is used to receive the gases from the hydrogen tank 15 and the natural gas tank 11, and fully mix the hydrogen and natural gas through a mixing mechanism to improve the combustion efficiency and safety; a mixing mechanism is provided inside the mixing tank 12, which can stir the hydrogen and natural gas mechanically to improve the mixing uniformity; the hydrogen inlet pipe 5 is responsible for transporting external hydrogen into the hydrogen tank 15; the connecting pipe four 14 is used to transport hydrogen from the hydrogen tank 15 to the first electromagnetic flow regulating valve 8; the connecting pipe three 13 is used to transport hydrogen to the mixing tank 12; the natural gas inlet pipe 2 is responsible for transporting external natural gas into the natural gas tank 11; the connecting pipe one 10 is used to transport natural gas from the natural gas tank 11 to the second electromagnetic flow regulating valve 9; the connecting pipe two 28 is used to transport natural gas to the mixing tank 12, and because it is located above the connecting pipe three 13 and the outlet pipe 16, it is conducive to the natural gas entering the mixing tank 12 from above; the outlet pipe 16 is used to discharge the mixed gas from the mixing tank 12 for subsequent applications; the first electromagnetic flow regulating valve 8 is installed between the connecting pipe four 14 and the connecting pipe three 13 to accurately control the hydrogen flow rate entering the mixing tank 12; the second electromagnetic flow regulating valve 9 is installed between the connecting pipe one 10 and the connecting pipe two 28 to accurately control the natural gas flow rate entering the mixing tank 12; the flange 17 is used to connect the above-mentioned pipelines and provide a convenient installation foundation for the disassembly, assembly and maintenance of the electromagnetic flow regulating valve; the leakage alarm mechanism is arranged outside the flange 17 to timely send out an alarm signal when leakage occurs at the pipeline connection to ensure the safety of the device operation; the barometer 29 is installed on the top of the mixing tank 12 to monitor the air pressure state inside the mixing tank 12 in real time, and can realize the automatic regulation of gas supply when the air pressure reaches the set value; a sealing door 4 is arranged outside the installation box 1 to enclose the internal environment of the installation box 1 and avoid external dust or gas interfering with its normal operation; a handle 3 is fixedly connected to the outside of the sealing door 4 to facilitate the operator to open and close the sealing door 4; a ventilation and heat dissipation mechanism is also arranged outside the installation box 1 to control the temperature inside the installation box 1 and ensure smooth air circulation, so as to ensure that each component works in a stable temperature environment, improve the operation reliability and service life of the device. The available model of the electromagnetic flow regulating valve is BURKERT Type 2871.

[0025] Please refer to Appendix Figure 2 , Appendix Figure 4 , Appendix Figure 5 , Appendix Figure 6 and Appendix Figure 7, the leakage alarm mechanism includes an airbag 18. The airbag 18 is sleeved outside the flange 17. An elastic ring 19 is fixedly connected to the outside of the airbag 18. A clamp shell 20 is arranged outside the airbag 18. A support column 24 is arranged at the top of the airbag 18. A conductive plate 25 is fixedly connected to the top of the support column 24. Connecting rods 26 are fixedly connected to both sides of the conductive plate 25. A sliding groove 22 corresponding to the connecting rod 26 is formed in the inner wall of the clamp shell 20. A plastic spring 23 is arranged between the inner top wall of the clamp shell 20 and the conductive plate 25. An alarm lamp 21 is installed at the top of the clamp shell 20. Two conductive terminals 27 are fixedly connected to the bottom of the alarm lamp 21. The conductive terminals 27 penetrate through the top of the clamp shell 20 and are electrically connected to the conductive plate 25. The connecting rod 26 is slidably connected inside the sliding groove 22. The conductive plate 25 is slidably connected inside the clamp shell 20. The airbag 18 is located in the middle of the clamp shell 20. The clamp shell 20 is clamped outside the flange 17.

[0026] Specifically, the airbag 18 is sleeved outside the flange 17 and is a key part for detecting gas leakage. When there is a leakage at the pipe connection, the leaked gas will enter and fill the airbag 18; the elastic ring 19 is fixedly connected to the outside of the airbag 18 and is used to sleeve the airbag 18 on the flange 17. Due to its elastic design, the airbag 18 will tightly sleeve on the flange 17; the clamp shell 20 covers the outside of the airbag 18 and is clamped outside the flange 17. The clamp shell 20 is made of an elastic material and can be clamped outside the flange 17, which is used to fix the position of the entire alarm mechanism and provide guiding and supporting functions at the same time; a support column 24 is arranged at the top of the airbag 18, and the support column 24 is used to transfer the upward displacement after the airbag 18 expands to the conductive plate 25; the conductive plate 25 is fixed at the top of the support column 24 and is a key part for realizing alarm triggering. When the conductive plate 25 moves upward to below the alarm lamp 21, it contacts the conductive terminal 27 to conduct the circuit; the connecting rods 26 are fixedly connected to both sides of the conductive plate 25 and are used to guide the conductive plate 25 to slide smoothly inside the clamp shell 20; the sliding groove 22 is arranged on the inner wall of the clamp shell 20 and is slidably matched with the connecting rod 26, which is used to limit the movement direction of the conductive plate 25 and ensure its stable upward movement; the plastic spring 23 is arranged between the inner top wall of the clamp shell 20 and the conductive plate 25 to prevent the conductive plate 25 from accidentally contacting the conductive terminal 27; the alarm lamp 21 is installed at the top of the clamp shell 20 and is a display device for leakage alarm. When the conductive plate 25 touches the conductive terminal 27, the alarm is triggered; the conductive terminal 27 is fixed at the bottom of the alarm lamp 21 and penetrates through the top of the clamp shell 20, which is a bridge connecting the circuit between the conductive plate 25 and the alarm lamp 21 to ensure accurate transmission of electrical signals; the conductive plate 25 and the clamp shell 20 are slidably connected, enabling it to move upward vertically with the expansion of the airbag 18; the connecting rod 26 is slidably connected inside the sliding groove 22 to ensure the movement accuracy and stability of the conductive plate 25 inside the clamp shell 20; the airbag 18 is located in the middle of the clamp shell 20 as a whole to ensure that it can smoothly push the conductive plate 25 upward when pressed, thereby realizing the leakage alarm function.

[0027] Please refer to the attached Figure 2 attachment Figure 8 attachment Figure 9 attachment Figure 10 and attachment

[0028] Specifically, the motor 30 is installed on the top of the mixing tank 12 and is the power source of the mixing mechanism. Its output end penetrates the top of the mixing tank 12 and extends downward; the square column 37 is fixedly connected to the output end of the motor 30 and is used to transmit the rotational power of the motor 30 to the lower structure. At the same time, the inside of the sleeve 31 is a square hole, so the sleeve 31 will also rotate synchronously; the bottom of the square column 37 is fixedly connected to a circular column 38, and the lower end of the circular column 38 is rotatably connected to the base 39 at the bottom inside the mixing tank 12, which is used to support and stabilize the entire rotating structure and ensure the coaxiality of its vertical rotation; the sleeve 31 is slidably connected to the outside of the square column 37, and its inside is a square hole, which fits with the square column 37, enabling it to slide up and down while rotating with the square column 37; the inclined disk 36 is fixedly connected to the outside of the sleeve 31 and is used to convert the rotational motion into a reciprocating up and down motion, and cooperate with the roller guide to realize the lifting of the overall structure; a plurality of arc-shaped plates 32 are fixedly connected to the outside of the sleeve 31 and are located below the inclined disk 36, rotating and moving up and down with the sleeve 31, and are used to stir the hydrogen and natural gas inside the mixing tank 12 up and down to improve the uniformity of gas mixing; the fixed column 33 is vertically fixed to the inner top wall of the mixing tank 12, and the upper roller 34 and the lower roller 35 are sequentially installed on its outside, providing the guiding and limiting functions for the up and down sliding of the inclined disk 36 to ensure the stability and reliability of its movement track; the base 39 is fixedly connected to the bottom wall of the mixing tank 12 and is used to support the circular column 38 and provide a rotating bearing surface to make the overall rotating system operate smoothly; the arc-shaped plate 32 is rotatably connected inside the mixing tank 12, moving up and down and rotating with the sleeve 31, thereby forming a strong turbulent flow inside the mixing tank 12 to realize the rapid and uniform mixing of hydrogen and natural gas.

[0029] Please refer to the attached Figure 1 -attachment Figure 3, the ventilation and heat dissipation mechanism includes at least one heat dissipation fan 6, which is installed on the top of the installation box 1, and a plurality of ventilation slots 7 are provided on the outer side of the installation box 1.

[0030] Specifically, the heat dissipation fan 6 is installed on the top of the installation box 1 and is the core component of the mechanism. It is used to actively extract or blow in air to achieve air circulation and heat discharge inside the installation box 1, thereby preventing overheating caused by long-term operation of internal equipment. A plurality of ventilation slots 7 are provided on the outer side of the installation box 1, and these ventilation slots 7 provide air inlet or exhaust channels for the fan, and cooperate with the heat dissipation fan 6 to jointly complete the air convection cycle, effectively improving the overall heat dissipation efficiency of the device and ensuring the continuous and safe operation of the equipment in a stable temperature environment.

[0031] Working principle: When using this device, first inject hydrogen into the hydrogen tank 15 through the hydrogen inlet pipe 5, and inject natural gas into the natural gas tank 11 through the natural gas inlet pipe 2. Subsequently, the hydrogen passes through the connecting pipe four 14, and after the flow rate is adjusted by the first electromagnetic flow regulating valve 8, it enters the connecting pipe three 13 and is finally transported to the mixing tank 12. At the same time, the natural gas passes through the connecting pipe one 10, and after the flow rate is adjusted by the second electromagnetic flow regulating valve 9, it passes through the connecting pipe two 28 and enters the mixing tank 12.

[0032] A barometer 29 is provided inside the mixing tank 12 to monitor the internal air pressure in real time. When the air pressure reaches the set value, the system will automatically stop the input of hydrogen and natural gas. Hydrogen enters from the bottom of the mixing tank 12. Due to its lighter mass, it diffuses from bottom to top; while natural gas enters from the top of the mixing tank 12. Due to its heavier mass, it diffuses from top to bottom. During the process of the gas entering the mixing tank 12, the motor 30 starts, driving the square column 37 to rotate in the base 39. Since the inner hole of the sleeve 31 is square and matches the square column 37, the sleeve 31 rotates accordingly. While the sleeve 31 is rotating, under the limiting action of the upper roller 34 and the lower roller 35, the swash plate 36 drives the sleeve 31 to make a reciprocating up and down movement, thereby realizing the vertical stirring of hydrogen and natural gas by the arc-shaped plate 32. This structure effectively improves the gas mixing efficiency and significantly improves the overall working efficiency. The mixed gas finally discharges through the outlet pipe 16.

[0033] Since the first electromagnetic flow regulating valve 8 and the second electromagnetic flow regulating valve 9 are installed on the connecting pipeline and need to be disassembled and maintained or serviced regularly, a gas leakage alarm mechanism is provided on their installation flange 17. If leakage occurs at the connection of the flange 17, the gas will gradually fill the airbag 18. As the airbag 18 expands, it moves upward within the housing 20, pushing the conductive plate 25 upward. When the conductive plate 25 contacts the conductive terminal 27 below the alarm lamp 21, power is supplied to the alarm lamp 21, triggering an alarm to alert the staff to pay attention to gas leakage. Since the leaked gas is enclosed within the airbag 18, even if leakage occurs, these flammable and explosive gases will not be directly discharged into the air, thus effectively avoiding potential safety hazards caused by gas leakage.

[0034] After closing the sealing door 4 outside the ventilation slot 7, the device can dissipate heat and ventilate the interior of the installation box 1 through the heat dissipation fan 6 and the ventilation slot 7 to ensure that it always remains in an ideal working state.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flow regulating device for hydrogen-doped natural gas, comprising an installation box (1), characterized in that, Inside the installation box (1), a hydrogen gas tank (15), a mixing tank (12), and a natural gas tank (11) are installed in sequence from left to right. A mixing mechanism is arranged inside the mixing tank (12). A ventilation and heat dissipation mechanism is arranged outside the installation box (1). The outside of the hydrogen gas tank (15) is fixedly connected with a fourth connecting pipe (14) and a hydrogen gas inlet pipe (5) from top to bottom in sequence. The outside of the mixing tank (12) is fixedly connected with a second connecting pipe (28), a third connecting pipe (13), and an outlet pipe (16). And the second connecting pipe (28) is located above the third connecting pipe (13) and the outlet pipe (16). The outside of the natural gas tank (11) is fixedly connected with a natural gas inlet pipe (2) and a first connecting pipe (10) from top to bottom in sequence. A first electromagnetic flow regulating valve (8) is installed between the fourth connecting pipe (14) and the third connecting pipe (13) through a flange (17). A second electromagnetic flow regulating valve (9) is installed between the second connecting pipe (28) and the first connecting pipe (10) through a flange (17). A leakage alarm mechanism is arranged outside the flange (17).

2. The flow rate regulating device for hydrogen-doped natural gas according to claim 1, wherein The leakage alarm mechanism includes an airbag (18). The airbag (18) is sleeved outside the flange (17). An elastic ring (19) is fixedly connected to the outside of the airbag (18). A clamp shell (20) is arranged outside the airbag (18). A support column (24) is arranged at the top of the airbag (18). A conductive plate (25) is fixedly connected to the top of the support column (24). Connecting rods (26) are fixedly connected to both sides of the conductive plate (25). A sliding groove (22) corresponding to the connecting rod (26) is opened on the inner wall of the clamp shell (20). A plastic spring (23) is arranged between the inner top wall of the clamp shell (20) and the conductive plate (25). An alarm lamp (21) is installed on the top of the clamp shell (20). Two conductive terminals (27) are fixedly connected to the bottom of the alarm lamp (21).

3. A flow rate regulating device for hydrogen-doped natural gas according to claim 1, characterized in that, The mixing mechanism includes a motor (30). The motor (30) is installed on the top of the mixing tank (12). The output end of the motor (30) penetrates through the top of the mixing tank (12) and is fixedly connected with a square column (37). A circular column (38) is fixedly connected to the bottom of the square column (37). A sleeve (31) is slidably connected to the outside of the square column (37). An inclined disk (36) is fixedly connected to the outside of the sleeve (31). A plurality of arc-shaped plates (32) are fixedly connected to the outside of the sleeve (31) and are located below the inclined disk (36). A fixed column (33) is fixedly connected to the inner top wall of the mixing tank (12). An upper roller (34) and a lower roller (35) are fixedly connected to the outside of the fixed column (33) from top to bottom in sequence. A base (39) is fixedly connected to the inner bottom wall of the mixing tank (12).

4. The flow rate regulating device for natural gas hydrogen blending according to claim 1, characterized in that, The ventilation and heat dissipation mechanism includes at least one heat dissipation fan (6). The heat dissipation fan (6) is installed on the top of the installation box (1). A plurality of ventilation slots (7) are opened on the outside of the installation box (1).

5. The flow rate regulating device for natural gas hydrogen blending according to claim 1, wherein A sealing door (4) is installed on the outside of the installation box (1), a handle (3) is fixedly connected to the outside of the sealing door (4), and a barometer (29) is installed on the top of the mixing tank (12).

6. The flow regulation device for hydrogen-doped natural gas according to claim 2, wherein, The airbag (18) is located in the middle of the clip shell (20), and the clip shell (20) is clamped on the outside of the flange (17).

7. The flow rate regulating device for natural gas hydrogen blending according to claim 2, characterized in that, The connecting rod (26) is slidably connected inside the sliding groove (22), and the conductive plate (25) is slidably connected inside the clip shell (20).

8. The flow rate regulating device for natural gas hydrogen blending according to claim 3, characterized in that, The swash plate (36) is slidably connected between the upper roller (34) and the lower roller (35), and the circular column (38) is rotatably connected inside the base (39).

9. The flow rate regulating device for hydrogen-doped natural gas according to claim 3, wherein The arc plate (32) is rotatably connected inside the mixing tank (12).

10. The flow rate regulating device for natural gas hydrogen blending according to claim 2, characterized in that, The conductive terminal (27) penetrates through the top of the clip shell (20), and the conductive terminal (27) is electrically connected to the conductive plate (25).

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