Natural gas hydrogen-doped flow adjusting device

Abstract

The utility model discloses a flow regulating device for hydrogen doping of natural gas, which belongs to the technical field of hydrogen doping of natural gas and comprises a protective box, a support table is placed at one end in the protective box, a hydrogen tank and a natural gas tank are placed on the support table, and the hydrogen tank and the natural gas tank are respectively communicated with a hydrogen pipe and a natural gas pipe. Through cooperation of a first electromagnetic valve and a second electromagnetic valve, a manual switch can be replaced to control circulation of hydrogen and natural gas, a detection assembly is arranged in mixed gas, and starting of the first electromagnetic valve, the second electromagnetic valve and a gas detector can be controlled through a controller; the mixing proportion concentration of hydrogen and natural gas is accurately controlled, the natural gas hydrogen doping flow adjusting efficiency is improved, the ventilation effect can be provided for the interior of the protection box through the arranged ventilation grooves, and the air flowing speed in the protection box can be increased through the fan designed at the top of the protection box.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas hydrogen blending, in particular to a flow regulating device for natural gas hydrogen blending. Background Art

[0002] Natural gas blending with hydrogen is a new energy technology that mixes natural gas and hydrogen to reduce environmental pollution and improve energy efficiency. By mixing hydrogen and natural gas in a certain proportion, a new alternative gas fuel HCNG is obtained. Therefore, a flow regulating device is needed in the process of mixing hydrogen and natural gas to control the mixing ratio between hydrogen and natural gas.

[0003] According to the announcement number: CN219111366U, a flow regulating device for natural gas mixed with hydrogen is proposed, which includes a box body and a controller, and a natural gas tank, a mixing tank and a hydrogen tank fixedly installed on the bottom of the inner wall of the box body from left to right in sequence. The outer wall of the hydrogen tank is fixedly installed with a first air pipe, which is used to detect the natural gas and hydrogen entering the mixing tank through a hydrogen sensor and a methane sensor. If the methane sensor and the hydrogen sensor detect that the natural gas and hydrogen in the mixing tank do not reach the set standard, the information is transmitted to the controller, and the controller controls the first solenoid valve and the second solenoid valve to start, so that the natural gas in the natural gas tank and the hydrogen in the hydrogen tank are input into the mixing tank through the first air pipe and the second air pipe. If the natural gas and hydrogen are detected to exceed the set range, the information is transmitted to the controller again, and the controller controls the flow rate of the first solenoid valve and the second solenoid valve, thereby achieving the purpose of flow regulation of natural gas mixed with hydrogen.

[0004] According to the above introduction, the flow regulating device set when the existing natural gas is blended with hydrogen generally manually switches the switches when hydrogen and natural gas are transported, and cannot automatically control the switches, which easily leads to a large difference in the gas concentration after the natural gas is blended with hydrogen. In addition, there is a lack of mixed gas detection operation during the natural gas blending process, and the ratio concentration of hydrogen and natural gas cannot be accurately controlled. In order to solve the above problems, a flow regulating device for natural gas blending with hydrogen is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a flow regulating device for natural gas mixed with hydrogen, which can replace the manual switch to control the circulation of hydrogen and natural gas through the cooperation of a first solenoid valve and a second solenoid valve, and a detection component is set on the mixed gas, which can control the start of the first solenoid valve and the second solenoid valve and the gas detector through a controller, accurately control the ratio concentration of the mixture between hydrogen and natural gas, improve the efficiency of natural gas mixed with hydrogen flow regulation, and solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flow regulating device for natural gas mixed with hydrogen, comprising a protection box, a support platform is placed at one end of the protection box, a hydrogen tank and a natural gas tank are placed on the support platform, the hydrogen tank and the natural gas tank are respectively connected with a hydrogen pipe and a natural gas pipe, the other ends of the hydrogen pipe and the natural gas pipe are connected with a mixing tank installed on the other side of the protection box, one side of the bottom of the mixing tank is connected with an air guide pipe installed with a first solenoid valve, a detection component for the mixed concentration of hydrogen and natural gas is arranged between the mixing tank and the hydrogen tank and the natural gas tank, and the hydrogen pipe and the natural gas pipe are both installed with a first electromagnetic valve for controlling the flow of hydrogen and natural gas. Two solenoid valves, the detection component includes a support rod, one end of the support rod is fixed to the inner wall of the protection box, a detection box is installed on the support rod, the bottom of the detection box is connected to one end of the air duct, a gas detector is arranged on the upper surface of the detection box, a controller is installed on the detection box located on one side of the gas detector, a first pressure detector is installed on the hydrogen pipe and the natural gas pipe on one side close to the hydrogen tank and the natural gas tank, a second pressure detector is installed on the mixing tank, a driving machine is installed on the bottom of the mixing tank, the output end of the driving machine passes through the mixing tank and is fixedly connected to a rotating shaft, and a stirring frame for mixing hydrogen and natural gas is fixedly connected to the surface of the rotating shaft.

[0007] Preferably, the controller is electrically connected to the first solenoid valve and the second solenoid valve respectively, and the gas detector is electrically connected to the controller.

[0008] Preferably, ventilation slots are arranged in an array on both side walls of the protection box, and the positions of the ventilation slots are symmetrical.

[0009] Preferably, ventilation ducts are embedded on both sides of the top of the protection box, and a fan is installed in the inner cavity of the ventilation ducts.

[0010] Preferably, a positioning seat is fixedly connected to the surface wall of the hydrogen tank and the natural gas tank, and one side of the positioning seat is fixedly connected to the inner wall of the protection box.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model provides a flow regulating device for natural gas mixed with hydrogen. Through the cooperation of the first solenoid valve and the second solenoid valve, the flow of hydrogen and natural gas can be controlled instead of the manual switch, and a detection component is set on the mixed gas. The controller can control the start of the first solenoid valve and the second solenoid valve and the gas detector to accurately control the mixed ratio concentration between hydrogen and natural gas, thereby improving the efficiency of natural gas mixed with hydrogen flow regulation.

[0013] 2. The utility model provides a flow regulating device for natural gas mixed with hydrogen, which can provide ventilation to the inside of the protection box through the ventilation slots, and the fan designed on the top of the protection box can speed up the air flow in the protection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a left side schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a right side schematic diagram of the overall structure of the utility model;

[0016] Figure 3 It is a schematic top view of the overall structure of the utility model;

[0017] Figure 4 It is a top view and cross-sectional schematic diagram of the protection box structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the drive machine and rotating shaft structure of the utility model.

[0019] Numbers in the figure: 1. Protection box; 2. Support platform; 3. Hydrogen tank; 4. Natural gas tank; 5. Hydrogen pipe; 6. Natural gas pipe; 7. Mixing tank; 8. First solenoid valve; 9. Air guide pipe; 10. Detection component; 101. Support rod; 102. Detection box; 103. Gas detector; 104. Controller; 11. Second solenoid valve; 12. Ventilation slot; 13. Ventilation pipe; 14. Fan; 15. First pressure detector; 16. Second pressure detector; 17. Driving machine; 18. Rotating shaft; 19. Stirring frame; 20. Positioning seat. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides Figures 1 to 5A flow regulating device for natural gas mixed with hydrogen is shown, comprising a protective box 1, a support platform 2 is placed at one end of the protective box 1, a hydrogen tank 3 and a natural gas tank 4 are placed on the support platform 2, the hydrogen tank 3 and the natural gas tank 4 are connected with a hydrogen pipe 5 and a natural gas pipe 6 respectively, the other ends of the hydrogen pipe 5 and the natural gas pipe 6 are connected with a mixing tank 7 installed on the other side of the protective box 1, one side of the bottom of the mixing tank 7 is connected with an air guide pipe 9 with a first solenoid valve 8 installed, a detection component 10 for the mixed concentration of hydrogen and natural gas is arranged between the mixing tank 7 and the hydrogen tank 3 and the natural gas tank 4, and a second solenoid valve 11 for controlling the flow of hydrogen and natural gas is installed on the hydrogen pipe 5 and the natural gas pipe 6. Through the cooperation of the first solenoid valve 8 and the second solenoid valve 11, the circulation of hydrogen and natural gas can be controlled instead of the manual switch, and the detection component 10 is arranged on the mixed gas, and the start-up of the first solenoid valve 8 and the second solenoid valve 11 and the gas detector 103 can be controlled by the controller 104, so as to accurately control the mixed ratio concentration between hydrogen and natural gas, thereby improving the efficiency of the flow regulation of natural gas mixed with hydrogen.

[0022] The detection assembly 10 includes a support rod 101, one end of which is fixed to the inner wall of the protective box 1, and a detection box 102 is installed on the support rod 101. The bottom of the detection box 102 is connected to one end of the air duct 9, and a gas detector 103 is provided on the upper surface of the detection box 102. A controller 104 is installed on the detection box 102 located on one side of the gas detector 103. The detection box 102 can introduce the mixed gas in the mixing tank 7 into the detection box 102 for storage, and then the controller 104 controls the closing of the first solenoid valve 8 on the air duct 9, and then the controller 104 controls the gas detector 103 to start detecting the mixed gas, which can more accurately control the ratio and concentration of the mixture between hydrogen and natural gas.

[0023] A first pressure detector 15 is installed on the hydrogen pipe 5 and the natural gas pipe 6 on one side close to the hydrogen tank 3 and the natural gas tank 4, which can detect the pressure of the gas transported by the hydrogen pipe 5 and the natural gas pipe 6, so as to judge the stock of the gas in the hydrogen tank 3 and the natural gas tank 4. A second pressure detector 16 is installed on the mixing tank 7, which can detect the pressure of the mixed gas in the mixing tank 7. A driving machine 17 is installed at the bottom of the mixing tank 7. The output end of the driving machine 17 passes through the mixing tank 7 and is fixedly connected to a rotating shaft 18. A stirring frame 19 for mixing and stirring hydrogen and natural gas is fixedly connected to the surface of the rotating shaft 18. The driving machine 17 provides a power source, which can drive the stirring frame 19 on the rotating shaft 18 to mix and stir the hydrogen and natural gas injected into the mixing tank 7.

[0024] The controller 104 is electrically connected to the first solenoid valve 8 and the second solenoid valve 11, and the gas detector 103 is electrically connected to the controller 104, so that the working status of the first solenoid valve 8 and the second solenoid valve 11 and the gas detector 103 can be conveniently controlled by the controller 104.

[0025] The protective box 1 has ventilation slots 12 arranged in an array on both side walls. The positions of the ventilation slots 12 are symmetrical. Ventilation pipes 13 are embedded on both sides of the top of the protective box 1. A fan 14 is installed in the inner cavity of the ventilation pipes 13. The ventilation slots 12 can provide ventilation to the interior of the protective box 1, and the fan 14 designed on the top of the protective box 1 can speed up the air flow in the protective box 1.

[0026] A positioning seat 20 is fixedly connected to the surface wall of the hydrogen tank 3 and the natural gas tank 4, and one side of the positioning seat 20 is fixedly connected to the inner wall of the protective box 1. By fixing the positioning seat 20 and the protective box 1, the position of the hydrogen tank 3 and the natural gas tank 4 can be positioned to prevent the hydrogen tank 3 and the natural gas tank 4 from tipping over during use.

[0027] During specific use, firstly, the hydrogen tank 3 and the natural gas tank 4 are connected to the mixing tank 7 through the hydrogen pipe 5 and the natural gas pipe 6, and then the first solenoid valve 8 installed on the hydrogen pipe 5 and the natural gas pipe 6 can facilitate the staff to control the gas flow through the controller 104, replacing the manual control of the gas flow operation, and mixing is carried out in the mixing tank 7. During the mixing process, the driving machine 17 is provided to provide a power source, which can drive the stirring frame 19 on the rotating shaft 18 to accelerate the mixing and stirring speed of the hydrogen and natural gas injected into the mixing tank 7, and then the mixing tank 7 is connected to the detection box 102 through the air guide pipe 9, and then the first solenoid valve 8 on the air guide pipe 9 is closed by the controller 104, and then the controller 104 controls the gas detector 103 to start the detection of the mixed gas, which can more accurately control the ratio and concentration of the mixture between hydrogen and natural gas. Therefore, the mixed gas after passing the detection can be put into use, and the flow control operation of the natural gas hydrogen blending process is completed.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flow regulating device for natural gas blending with hydrogen, characterized in that: The invention comprises a protection box (1), wherein a support platform (2) is placed at one end of the protection box (1), a hydrogen tank (3) and a natural gas tank (4) are placed on the support platform (2), the hydrogen tank (3) and the natural gas tank (4) are respectively connected with a hydrogen pipe (5) and a natural gas pipe (6), the other ends of the hydrogen pipe (5) and the natural gas pipe (6) are connected with a mixing tank (7) installed on the other side of the protection box (1), one side of the bottom of the mixing tank (7) is connected with an air guide pipe (9) on which a first electromagnetic valve (8) is installed, a detection component (10) for the mixed concentration of hydrogen and natural gas is arranged between the mixing tank (7) and the hydrogen tank (3) and the natural gas tank (4), the hydrogen pipe (5) and the natural gas pipe (6) are both installed with a second electromagnetic valve (11) for controlling the flow of hydrogen and natural gas, the detection component (10) comprises a support rod (101), the support rod (101) One end of the support rod (101) is fixed to the inner wall of the protection box (1), a detection box (102) is installed on the support rod (101), the bottom of the detection box (102) is connected to one end of the air guide pipe (9), a gas detector (103) is arranged on the upper surface of the detection box (102), a controller (104) is installed on the detection box (102) located on one side of the gas detector (103), a first pressure detector (15) is installed on the hydrogen pipe (5) and the natural gas pipe (6) on the side close to the hydrogen tank (3) and the natural gas tank (4), a second pressure detector (16) is installed on the mixing tank (7), a driving machine (17) is installed on the bottom of the mixing tank (7), the output end of the driving machine (17) passes through the mixing tank (7) and is fixedly connected to a rotating shaft (18), and a stirring frame (19) for mixing and stirring hydrogen and natural gas is fixedly connected to the surface of the rotating shaft (18).

2. A flow regulating device for natural gas blending with hydrogen according to claim 1, characterized in that: The controller (104) is electrically connected to the first solenoid valve (8) and the second solenoid valve (11), respectively, and the gas detector (103) is electrically connected to the controller (104).

3. A flow regulating device for natural gas blending with hydrogen according to claim 2, characterized in that: The two side walls of the protection box (1) are provided with ventilation slots (12) in an array, and the positions of the ventilation slots (12) are symmetrical.

4. A flow regulating device for natural gas blending with hydrogen according to claim 3, characterized in that: Ventilation pipes (13) are embedded on both sides of the top of the protection box (1), and a fan (14) is installed in the inner cavity of the ventilation pipe (13).

5. A flow regulating device for natural gas blending with hydrogen according to claim 1, characterized in that: A positioning seat (20) is fixedly connected to the surface walls of the hydrogen tank (3) and the natural gas tank (4), and one side of the positioning seat (20) is fixedly connected to the inner wall of the protection box (1).

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