A mixed gas preparation device and method

Abstract

The present invention relates to the technical field of mixed gas preparation, and discloses a mixed gas preparation device and method, including a mixing component, a dispersing component and an air intake component; the mixing component is provided with a mixing chamber and a stirring chamber, the cross section of the mixing chamber is trapezoidal, the size of the larger end of the mixing chamber is the same as the size of the stirring chamber and is in communication with the stirring chamber; the dispersing component includes a mixing rod, a fan blade and a stirring blade, the mixing rod is rotatably connected in the mixing chamber, and at least partially located in the stirring chamber, the stirring blade is circumferentially arrayed on the surface of the mixing rod located in the stirring chamber, and the fan blade is fixedly connected to the surface of the mixing rod located in the mixing chamber, and is used to generate an airflow when the mixing rod rotates so that the gas flows from the larger end of the mixing chamber to the smaller end. The mixed gas preparation device and method make the distribution of the components in the mixed gas more uniform, effectively improve the mixing effect, make the mixing more sufficient, and improve the mixing efficiency at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of mixed gas preparation, and in particular to a mixed gas preparation device and method. Background Art

[0002] Mixed gas is a gas formed by mixing two or more gases in a specific proportion. It is widely used in industrial production, energy utilization, scientific research and other fields. The mixed gas formed by mixing methane and propane into hydrogen has significant advantages as a clean and efficient fuel. Hydrogen, as the main component, has the characteristics of high energy density and clean combustion, while the appropriate amount of methane and propane added can improve the combustion characteristics and enhance combustion stability, while reducing the technical difficulty during storage and transportation.

[0003] At present, when batch producing this kind of combustion mixed gas, multiple gases are input into a sealed container and stirred by a stirring rod. Due to the significant differences in physical properties such as molecular weight and density among hydrogen, methane and propane, stratification effect and local concentration fluctuation problems are prone to occur. The stratification effect refers to the phenomenon that gases of different densities tend to separate under the action of gravity, forming a phenomenon in which a gas with higher density (such as propane) is in the lower layer and a gas with lower density (such as hydrogen) is in the upper layer. The local concentration fluctuation refers to the phenomenon that during the mixing process, due to the difference in the movement and diffusion rate of gas molecules, the concentrations of various components in the mixed gas at different positions are unevenly distributed. Mechanical stirring or simple pressure mixing methods are difficult to achieve sufficient mixing, and the mixing efficiency is poor, which takes a long time and is not convenient for batch mixed gas production. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for preparing a mixed gas, so that the distribution of the components in the mixed gas is more uniform, the mixing effect is effectively improved, the mixing is more complete, and the mixing efficiency is improved.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] Design a mixed gas preparation device, including a mixing component, a dispersion component and an air intake component;

[0007] The mixing component is provided with a mixing chamber and a stirring chamber, the cross section of the mixing chamber is arranged in a trapezoidal shape, and the larger end of the mixing chamber has the same size as that of the stirring chamber and is in communication with the stirring chamber;

[0008] The dispersing component includes a mixing rod, a fan blade and a stirring blade. The mixing rod is rotatably connected in the mixing chamber and at least partially located in the stirring chamber. The stirring blades are circumferentially arrayed on the surface of the mixing rod located in the stirring chamber. The fan blades are fixedly connected to the surface of the mixing rod located in the stirring chamber and are used to generate an airflow when the mixing rod rotates so that the gas flows from the larger end of the mixing chamber to the smaller end.

[0009] The gas inlet component is communicated with the stirring chamber and is used for conveying the gas to be mixed into the stirring chamber.

[0010] Optionally, the mixing component includes a mixing shell and a protective assembly, the mixing chamber and the stirring chamber are opened in the mixing shell, the protective assembly is sleeved on the outside of the mixing shell, the inner bottom wall of the mixing shell is fixedly connected to a support column, the cross-section of the mixing rod is sleeved on the outside of the support column through the opened through hole, and the inner bottom wall of the mixing shell is provided with an electrostatic brush.

[0011] Optionally, the protection component includes a protection shell, a protection cavity is formed between the protection shell and the mixing shell, a protection air pipeline is sealingly connected to the surface of the protection shell, and the protection air pipeline is in communication with the protection cavity.

[0012] Optionally, a driving mechanism is further included, wherein the driving mechanism includes a driving motor and a transmission part, the driving motor is installed at the end of the protective shell, and the output end of the driving motor drives the mixing rod to rotate through the transmission part.

[0013] Optionally, the transmission part includes a transmission block, a first magnetic block and a second magnetic block, the transmission block is fixedly connected to the output end of the driving motor, the first magnetic block is fixedly connected to one end of the transmission block facing the protective shell and is spaced apart from the protective shell, and the second magnetic block is fixedly connected to the end of the mixing rod corresponding to the first magnetic block.

[0014] Optionally, a detection mechanism is also included, which includes a turntable, a turntable rod and a gas detection component, the turntable is rotatably connected to the end of the protective shell and is located outside the drive motor, the turntable rod is fixedly connected to the outer surface of the turntable, and the gas detection component is fixedly connected to the end of the turntable rod.

[0015] Optionally, the transmission part also includes driving teeth and transmission teeth, the driving teeth are fixedly connected to the surface of the transmission block, the transmission teeth are rotatably connected to the end of the protective shell and mesh with the driving teeth, and the inner wall of the turntable is meshed with the transmission teeth through the opened tooth grooves.

[0016] Optionally, the air intake component includes at least three air intake pipes, the three air intake pipes are circumferentially arrayed on the outer surface of the protective component, and one end of the three air intake pipes penetrates into the protective component and is sealed and connected to the mixing shell.

[0017] Optionally, a cross bar is fixedly connected inside the mixing shell, one end of the cross bar is sleeved on the outer surface of the mixing rod, the output end of one of the air inlet pipes is connected to the end of the cross bar sleeved on the mixing rod through a delivery pipe, the interior of the mixing rod is connected to the delivery pipe through a through cavity, a dispersion cavity connected to the through cavity is provided inside the fan blade, and an exhaust port connected to the dispersion cavity is provided on the surface of the fan blade, which is used to allow the gas in one of the air inlet pipes to flow through the through cavity and the dispersion cavity in sequence and then be discharged through the exhaust port.

[0018] A method for preparing a mixed gas, comprising using the mixed gas preparation device as described above;

[0019] 3%-10% of methane gas, 3%-10% of propane gas and 80%-94% of hydrogen gas used as balance gas are delivered into the stirring chamber through the gas inlet component;

[0020] The mixing rod is driven to rotate the stirring blades and the fan blades, and the methane, propane and hydrogen gases in the stirring chamber are stirred by the stirring blades to preliminarily mix the gases. During the stirring, the airflow generated by the rotation of the fan blades promotes the gas flow, so that the gas flows from the larger end to the smaller end of the mixing chamber. At the same time, the airflow generated can break up the gas clusters.

[0021] The present invention provides a device and method for preparing a mixed gas, which has the following beneficial effects:

[0022] The mixed gas preparation device and method deliver the gas to be mixed into the stirring chamber through the air intake component, and the mixing rod rotates to drive the stirring blade to rotate to stir and mix the gas in the stirring chamber. At the same time, the fan blade also generates an upward airflow as the mixing rod rotates, and the gas mixed by the stirring blade in the stirring chamber is delivered into the mixing chamber. The mixing chamber is arranged in a trapezoidal shape, and the gas flows from the larger opening to the smaller end, and then collides with the wall surface of the smaller end, which produces a reflection and dispersion effect, so that the gas is further mixed in the collision process, and the agglomeration of molecules in the gas is reduced. The gas collides with the wall surface of the smaller end of the mixing chamber and is dispersed to the two sides of the shell and then moves to the larger opening The gas flows in a large direction, and returns to the mixing chamber again to be stirred with the newly entered gas through the stirring blades, thereby increasing the flow path of the gas and forming vortices, which promotes the full mixing of gas molecules. During the circulation process, the airflow undergoes multiple collisions and reflections. Each collision and reflection will cause the gas molecules to be randomly distributed and rearranged, effectively improving the uniformity of gas mixing. The turbulent effect caused by the collision and reflection greatly increases the diffusion rate of gas molecules, further improving the mixing effect. The mechanical stirring effect of the rotating rod and the fan blades, as well as the circulation and collision of the airflow, enable the gas to be evenly mixed in a short time, effectively improving the efficiency of gas mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the explosion structure of the mixed gas preparation device in the present invention;

[0024] Figure 2 It is a schematic diagram of the installation structure of the mixed gas preparation device in the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the mixed gas preparation device in the present invention;

[0026] Figure 4 It is a schematic cross-sectional structure diagram of the mixed gas preparation device in the present invention.

[0027] In the figure: 100, mixing component; 110, mixing chamber; 120, stirring chamber; 130, mixing shell; 140, protection component; 141, protection shell; 142, protection chamber; 143, protection gas duct; 150, support column; 200, dispersion component; 210, mixing rod; 220, fan blade; 230, stirring blade; 300, air intake component; 310, air intake pipe; 320, cross bar; 330, delivery pipe; 400, driving mechanism; 410, driving motor; 420, transmission part; 421, transmission block; 422, first magnetic block; 423, second magnetic block; 424, driving tooth; 425, transmission tooth; 500, detection mechanism; 510, turntable; 520, turnbar; 530, gas detection component. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field without making creative work based on the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0029] See also Figures 1 to 4 , the present invention provides a technical solution: a mixed gas preparation device, including a mixing component 100, a dispersing component 200 and an air intake component 300;

[0030] The mixing component 100 is provided with a mixing chamber 110 and a stirring chamber 120. The cross section of the mixing chamber 110 is arranged in a trapezoidal shape. The size of the larger end of the mixing chamber 110 is the same as that of the stirring chamber 120 and is communicated with the stirring chamber 120.

[0031] The dispersion component 200 includes a mixing rod 210, a fan blade 220 and a stirring blade 230. The mixing rod 210 is rotatably connected to the mixing chamber 110 and at least partially located in the stirring chamber 120. The stirring blade 230 is circumferentially arrayed on the surface of the mixing rod 210 located in the stirring chamber 120. The fan blade 220 is fixedly connected to the surface of the mixing rod 210 located in the stirring chamber 120, and is used to generate an airflow when the mixing rod 210 rotates, so that the gas flows from the larger end of the mixing chamber 110 to the smaller end.

[0032] The gas inlet component 300 is in communication with the stirring chamber 120 and is used to deliver the gas to be mixed into the stirring chamber 120;

[0033] The trapezoidal structure of the mixing chamber 110 is set to be wide at the bottom and narrow at the top, so that the gas can be guided to diffuse and flow upward after entering from the bottom. The gas has a larger space at the bottom for preliminary mixing. As the gas flows upward, the flow path gradually narrows, thereby enhancing the flow velocity and turbulence of the gas. The narrower space at the top compresses the gas flow, causing the gas to flow more concentratedly to the top, increasing the frequency of mutual collisions between gas molecules and promoting mixing. Due to the trapezoidal structure and the circulating gas flow design, the gas mixing process is more efficient, the required energy consumption is relatively low, and the mixing effect of gases with large differences in density and physical properties can be effectively improved. The high flow rate and turbulent effect cause the gas in the mixing shell 130 to flow continuously, reducing the deposition of the gas on the shell surface. During the circulation of the gas flow, a local low-pressure area will be formed, which promotes the diffusion of the gas from the high-pressure area to the low-pressure area, further enhancing the mixing effect.

[0034] The mixing rod 210 rotates, driving the fan blades 220 fixed thereon to rotate together. When the fan blades 220 rotate, airflow is generated, causing the gas to flow from the larger end of the mixing chamber 110 to the smaller end. At the same time, the airflow generated can break up the gas clusters and promote uniform mixing of the gas. The stirring blades 230 are arranged on the mixing rod 210. When the mixing rod 210 rotates, the high turbulence and shear force generated by the stirring blades 230 further break up the gas clusters, so that the gases of different components are fully mixed. After the gas flows to the top in the mixing chamber 110, it collides with the top inner wall of the mixing chamber 110, generating reflection and dispersion effects, thereby intensifying the mixing degree of the gas. The air intake component 300 transports different gases into the stirring chamber 120. The stirring blades 230 in the stirring chamber 120 generate high turbulence and shear force by rotation, and preliminarily mix the gases. The preliminarily mixed gases enter the mixing chamber 110 from the stirring chamber 120. The trapezoidal design in the mixing chamber 110 and the airflow generated by the rotation of the fan blades 220 further promote the gas flow, and fully mix the gases through collision and dispersion effects.

[0035] The gases to be mixed may specifically be methane, propane and hydrogen, and the mixed gas can be used as combustion gas.

[0036] In this embodiment, as a preferred solution, the mixing component 100 includes a mixing shell 130 and a protective assembly 140, the mixing chamber 110 and the stirring chamber 120 are opened in the mixing shell 130, the protective assembly 140 is sleeved on the outside of the mixing shell 130, the inner bottom wall of the mixing shell 130 is fixedly connected with a support column 150, the cross section of the mixing rod 210 is sleeved on the outside of the support column 150 through the opened through hole, and the inner bottom wall of the mixing shell 130 is provided with an electrostatic brush;

[0037] The mixing shell 130 is provided with a mixing chamber 110 and a stirring chamber 120 inside, which is the main container for gas mixing and provides space for gas mixing. The protective component 140 provides additional protection for the mixing shell 130 to prevent the influence of the external environment on the mixing process. At the same time, it has the functions of heat preservation, isolation or shockproof, improves the stability and safety of the system, and avoids the influence of external interference factors on the mixing effect. The support column 150 is used to support the mixing rod 210, provides physical support for the mixing rod 210, and ensures that it remains stable during rotation. The fixed support prevents the mixing rod 210 from shifting during the rotation process, and ensures the smooth progress of the mixing process. The rotation of the mixing rod 210 drives the stirring blade 230 and the fan blade 220 to rotate together, generating airflow and turbulence. The electrostatic brush arranged on the inner bottom wall of the mixing shell 130 is used to eliminate the static electricity accumulation generated during the mixing process, and at the same time ensures the sealing of the mixing shell 130 and improves the safety of the system.

[0038] In this embodiment, as a preferred solution, the protection assembly 140 includes a protection shell 141, a protection cavity 142 is formed between the protection shell 141 and the mixing shell 130, a protection gas pipeline 143 is sealed and connected to the surface of the protection shell 141, and the protection gas pipeline 143 is communicated with the protection cavity 142;

[0039] The protective shell 141 is sleeved on the outside of the mixing shell 130 to provide physical protection to prevent the external environment from affecting the mixing shell 130 and the internal mixing process. The protective cavity 142 forms an isolation layer and can be filled with inert gas or other protective gas. It is connected to the protective gas pipeline 143. The protective gas pipeline 143 is connected to the protective cavity 142 for injecting or discharging protective gas, providing an inlet and outlet channel for protective gas, and facilitating the control of the type and pressure of gas in the protective cavity 142. By controlling the protective gas pipeline 143, the gas pressure in the protective cavity 142 can be adjusted to ensure that the mixing shell 130 maintains its structural integrity when the external pressure changes. Specifically, it can be filled with carbon dioxide gas to play a protective flame retardant role to prevent accidental combustion and leakage of the gas in the mixing shell 130. It can effectively isolate the gas in the mixing shell 130 from contact with the outside air to reduce the risk of fire and explosion. Cooling gas or heating gas can also be injected through the protective gas pipeline 143 to adjust the temperature of the mixing shell 130 and achieve precise temperature control. Cooling gas or heating gas are both existing well-known technologies and are again only cited.

[0040] In this embodiment, as a preferred solution, a driving mechanism 400 is also included. The driving mechanism 400 includes a driving motor 410 and a transmission part 420. The driving motor 410 is installed at the end of the protective shell 141. The output end of the driving motor 410 drives the mixing rod 210 to rotate through the transmission part 420. The driving motor 410 is an existing well-known technology and is only cited here for the purpose of being used as a power source to drive the mixing rod 210 to rotate through the transmission part 420.

[0041] In this embodiment, as a preferred solution, the transmission part 420 includes a transmission block 421, a first magnetic block 422 and a second magnetic block 423. The transmission block 421 is fixedly connected to the output end of the driving motor 410. The first magnetic block 422 is fixedly connected to one end of the transmission block 421 facing the protective shell 141 and is spaced apart from the protective shell 141. The second magnetic block 423 is fixedly connected to the end of the mixing rod 210 corresponding to the first magnetic block 422.

[0042] Through the connection between the transmission block 421 and the drive motor 410, the drive motor 410 directly drives the transmission block 421 to rotate. Through the setting of the transmission block 421, as a direct output component of the drive motor 410, the rotational motion generated by the drive motor 410 is transmitted to the first magnetic block 422. The first magnetic block 422 and the second magnetic block 423 form a magnetic coupling. The second magnetic block 423 receives the power transmitted by the first magnetic block 422, thereby driving the mixing rod 210 to rotate. The power transmission is achieved through magnetic force. Mechanical friction and wear are avoided through non-contact drive, the service life of the equipment is extended, and the maintenance requirements are reduced. The power is transmitted through magnetic coupling, which avoids the possible damage caused by traditional mechanical couplings. The mechanical friction generated by the magnetic coupling can reduce the risk of sparks, thereby improving the safety of the system, especially when handling flammable gases. Since the magnetic coupling can be achieved through a certain interval, the protective shell 141 can effectively isolate the gas in the drive motor 410 and the mixing chamber 110, prevent gas leakage or external pollution from affecting the drive system, and effectively ensure the sealing setting of the protective shell 141 to avoid accidental leakage of flammable gases. The magnetic coupling allows a certain degree of eccentricity and vibration absorption, making the system more stable during operation, reducing the mechanical stress on the drive motor 410 and the mixing rod 210, improving the stability during use, reducing the wear and failure rate of components, and reducing the maintenance frequency and cost.

[0043] In this embodiment, as a preferred solution, a detection mechanism 500 is further included, and the detection mechanism 500 includes a rotating disk 510, a rotating rod 520 and a gas detection member 530. The rotating disk 510 is rotatably connected to the end of the protective shell 141 and is located outside the drive motor 410. The rotating rod 520 is fixedly connected to the outer surface of the rotating disk 510, and the gas detection member 530 is fixedly connected to the end of the rotating rod 520.

[0044] The turntable 510 provides a rotating platform so that the turntable rod 520 and the gas detection component 530 can rotate therewith. Through the rotational motion, the turntable 510 drives the turntable rod 520 and the gas detection component 530 to cover different positions of the protective shell 141 to achieve comprehensive detection. The turntable rod 520 transmits the rotational motion of the turntable 510 to the gas detection component 530, so that it can cover different areas of the mixing chamber 110. The gas detection component 530 can be a gas detection sensor for detecting the composition, concentration, temperature, humidity and other parameters of the gas near the protective shell 141. It is an existing well-known technology and is only cited here. It can be cooperated with the terminal. The terminal and are both existing well-known technologies for receiving the detection results of the gas detection sensor for analysis. These data are transmitted to the control unit through the feedback system, so that any abnormal situation in the mixing process can be discovered and handled in time, avoiding accidental gas leakage, which can be discovered in time and effectively improve safety.

[0045] In this embodiment, as a preferred solution, the transmission part 420 also includes a driving tooth 424 and a transmission tooth 425. The driving tooth 424 is fixedly connected to the surface of the transmission block 421, and the transmission tooth 425 is rotatably connected to the end of the protective shell 141 and meshes with the driving tooth 424. The inner wall of the rotating disk 510 is meshed with the transmission tooth 425 through the tooth groove. The driving tooth 424 meshes with the transmission tooth 425 to transmit the rotational motion of the transmission block 421 to the transmission tooth 425. Through the cooperation between the transmission tooth 425 and the inner wall of the rotating disk 510 through the tooth groove, When the moving block 421 rotates, the turntable 510 rotates along with it. The stable rotation of the turntable 510 drives the synchronous rotation of the turntable 510 and the gas detection component 530, thereby realizing dynamic detection of the gas near the protective shell 141, timely discovering gas leakage, avoiding accidents, reducing the use of power units, and reducing the operating steps. The gas leakage prevention detection is carried out while the gas is mixed. The modular design of the transmission block 421, the driving teeth 424, the transmission teeth 425 and the turntable 510 makes installation and disassembly more convenient and easy to maintain and replace.

[0046] In this embodiment, as a preferred solution, the air intake component 300 includes at least three air intake pipes 310, which are arranged circumferentially on the outer surface of the protection component 140, and one end of the air intake pipes 310 penetrates the protection component 140 and is sealed and connected to the mixing shell 130;

[0047] One of the air inlet pipes 310 inputs H2 (i.e., hydrogen) gas, another air inlet pipe 310 inputs methane gas, and the last air inlet pipe 310 inputs propane gas. The three gases are mixed and transported into the mixing chamber 110 to form a mixed gas, which can be used as combustion gas.

[0048] In this embodiment, as a preferred solution, a cross bar 320 is fixedly connected inside the mixing shell 130, one end of the cross bar 320 is sleeved on the outer surface of the mixing rod 210, the output end of one of the air inlet pipes 310 is connected to one end of the cross bar 320 sleeved on the mixing rod 210 through a delivery pipe 330, the interior of the mixing rod 210 is connected to the delivery pipe 330 through a through cavity, a dispersion cavity connected to the through cavity is opened inside the fan blade 220, and an exhaust port connected to the dispersion cavity is opened on the surface of the fan blade 220, which is used to discharge the gas in one of the air inlet pipes 310 through the through cavity and the dispersion cavity in sequence through the exhaust port;

[0049] The cross bar 320 can support the mixing rod 210. By connecting the air inlet pipe 310 for inputting H2 (i.e. hydrogen) gas with the cross bar 320, the H2 (i.e. hydrogen) gas entering the mixing chamber 110 can be transported to the cross bar 320, and communicated with the cross bar 320 through the through cavity opened inside the mixing rod 210, so that the interior of the mixing rod 210 is connected with the delivery pipe 330 through the opened through cavity. A dispersion cavity connected to the through cavity is opened inside the fan blade 220, and the H2 (i.e. hydrogen) gas entering the dispersion cavity flows out through the exhaust port. In this process, the mixing rod 210 drives the fan blade 220 to rotate continuously, so that the H2 (i.e. hydrogen) gas is discharged during the rotation, so that the H2 (i.e. hydrogen) gas is more dispersed, thereby improving the mixing efficiency.

[0050] The present invention also provides a method for preparing a mixed gas, comprising using the mixed gas preparation device as described above;

[0051] 3%-10% methane gas, 3%-10% propane gas and 80%-94% H2 (i.e. hydrogen) gas used as balance gas are delivered into the stirring chamber through the gas inlet component;

[0052] The percentage refers to the composition ratio of the mixed gas (which can also be understood as the volume ratio). For example, in the mixed gas, the proportion of methane gas is 5%, the proportion of propane gas is 10%, and the proportion of H2 (i.e. hydrogen) used as the balance gas is 85%. Or in the mixed gas, the proportion of methane gas is 10%, the proportion of propane gas is 10%, and the proportion of H2 (i.e. hydrogen) used as the balance gas is 80%.

[0053] The mixing rod is driven to rotate the stirring blade and the fan blade. The stirring blade stirs the methane, propane and H2 (i.e. hydrogen) gases in the stirring chamber to initially mix the gases. During the stirring, the airflow generated by the rotation of the fan blade pushes the gas flow, so that the gas flows from the larger end to the smaller end of the mixing chamber. At the same time, the airflow generated can break up the gas clusters.

[0054] The sealing of the protective shell is ensured by the transmission part, and the detection mechanism is made to perform cyclic detection along the protective shell.

[0055] Although 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 mixed gas preparation device, characterized in that: It comprises a mixing component (100), a dispersing component (200) and an air intake component (300); The mixing component (100) is provided with a mixing chamber (110) and a stirring chamber (120); the cross section of the mixing chamber (110) is arranged in a trapezoidal shape; the larger end of the mixing chamber (110) has the same size as that of the stirring chamber (120) and is in communication with the stirring chamber (120); The dispersion component (200) comprises a mixing rod (210), a fan blade (220) and a stirring blade (230); the mixing rod (210) is rotatably connected to the mixing chamber (110) and is at least partially located in the stirring chamber (120); the stirring blade (230) is circumferentially arrayed on the surface of the mixing rod (210) located in the stirring chamber (120); the fan blade (220) is fixedly connected to the surface of the mixing rod (210) located in the stirring chamber (120) and is used to generate an airflow when the mixing rod (210) rotates, so that the gas flows from a larger end of the mixing chamber (110) to a smaller end; The gas inlet component (300) is in communication with the stirring chamber (120) and is used to deliver gas to be mixed into the stirring chamber (120); The mixing component (100) comprises a mixing shell (130) and a protective component (140); the mixing chamber (110) and the stirring chamber (120) are provided in the mixing shell (130); and the protective component (140) is sleeved on the outside of the mixing shell (130); The air intake component (300) comprises at least three air intake pipes (310), the three air intake pipes (310) are arranged in a circumferential array on the outer surface of the protection component (140), and one end of the three air intake pipes (310) penetrates into the protection component (140) and is sealedly connected to the mixing shell (130); A cross bar (320) is fixedly connected inside the mixing shell (130), one end of the cross bar (320) is sleeved on the outer surface of the mixing rod (210), the output end of one of the air intake pipes (310) is connected to one end of the cross bar (320) sleeved on the mixing rod (210) through a delivery pipe (330), the interior of the mixing rod (210) is connected to the delivery pipe (330) through a through cavity, a dispersion cavity connected to the through cavity is provided inside the fan blade (220), and an exhaust port connected to the dispersion cavity is provided on the surface of the fan blade (220), so as to allow the gas in one of the air intake pipes (310) to flow through the through cavity and the dispersion cavity in sequence and then be discharged through the exhaust port.

2. The device for preparing a mixed gas according to claim 1, characterized in that: The inner bottom wall of the mixing shell (130) is fixedly connected to a support column (150); the end surface of the mixing rod (210) is sleeved on the outside of the support column (150) through a through hole; and an electrostatic brush is provided on the inner bottom wall of the mixing shell (130).

3. A mixed gas preparation device according to claim 2, characterized in that: The protection component (140) comprises a protection shell (141), a protection cavity (142) is formed between the protection shell (141) and the mixing shell (130), a protection air pipeline (143) is sealingly connected to the surface of the protection shell (141), and the protection air pipeline (143) is in communication with the protection cavity (142).

4. A mixed gas preparation device according to claim 3, characterized in that: It also comprises a driving mechanism (400), the driving mechanism (400) comprising a driving motor (410) and a transmission part (420), the driving motor (410) being mounted at the end of the protective shell (141), and the output end of the driving motor (410) driving the mixing rod (210) to rotate via the transmission part (420).

5. The device for preparing a mixed gas according to claim 4, characterized in that: The transmission part (420) comprises a transmission block (421), a first magnetic block (422) and a second magnetic block (423); the transmission block (421) is fixedly connected to the output end of the drive motor (410); the first magnetic block (422) is fixedly connected to one end of the transmission block (421) facing the protective shell (141) and is spaced apart from the protective shell (141); and the second magnetic block (423) is fixedly connected to the end of the mixing rod (210) corresponding to the first magnetic block (422).

6. A mixed gas preparation device according to claim 5, characterized in that: The device also includes a detection mechanism (500), the detection mechanism (500) including a rotating disk (510), a rotating rod (520) and a gas detection component (530), the rotating disk (510) being rotatably connected to the end of the protective shell (141) and being located outside the drive motor (410), the rotating rod (520) being fixedly connected to the outer surface of the rotating disk (510), and the gas detection component (530) being fixedly connected to the end of the rotating rod (520).

7. A mixed gas preparation device according to claim 6, characterized in that: The transmission part (420) further comprises a driving tooth (424) and a transmission tooth (425), wherein the driving tooth (424) is fixedly connected to the surface of the transmission block (421), and the transmission tooth (425) is rotatably connected to the end of the protective shell (141) and meshes with the driving tooth (424), and the inner wall of the rotating disk (510) is meshed with the transmission tooth (425) via a tooth groove.

8. A method for preparing a mixed gas, characterized in that: A device for preparing a mixed gas according to any one of claims 1 to 7, characterized in that: 3%-10% of methane gas, 3%-10% of propane gas and 80%-94% of hydrogen gas used as balance gas are delivered into the stirring chamber through the gas inlet component; The driving motor drives the mixing rod to drive the stirring blades and fan blades to rotate. The stirring blades stir the methane, propane and hydrogen gases in the stirring chamber to preliminarily mix the gases. During the stirring, the airflow generated by the rotation of the fan blades promotes the flow of the gas, so that the gas flows from the larger end to the smaller end of the mixing chamber. At the same time, the airflow generated can break up the gas clusters.

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