Uniform gas mixing system

Abstract

The utility model belongs to the technical field of gas mixing, and discloses a uniform gas mixing system. The system comprises a first gas inlet branch, a second gas inlet branch, a gas mixing pipeline and a mixing tank, the first gas inlet branch and the second gas inlet branch are connected to the gas inlet end of the gas mixing pipeline so as to input first gas and second gas respectively, and the gas mixing pipeline is provided with a gas mixing assembly. The first gas and the second gas form premixed gas after passing through the gas mixing assembly, the gas mixing pipeline is inserted into the mixing tank, and the gas outlet end of the gas mixing pipeline is located below the middle of the mixing tank. Primary mixing is carried out in the gas mixing pipeline, and the gas outlet end of the gas mixing pipeline is arranged below the middle part of the mixing tank, so that premixed gas subjected to primary mixing forms relatively strong flow in the mixing tank after being input into the mixing tank, and under the combined action of macroscopic flow and microcosmic diffusion, various component gases are promoted to be mutually fused; the non-uniform phenomena such as layering in the gas mixing process are avoided, and the uniformity and consistency after gas mixing are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of gas mixing, in particular to a gas uniform mixing and blending system. Background Art

[0002] The process of the gas mixing and blending system is a complex and delicate one, often involving the combination of multi-component gases. For example, common combinations include H2 + PH3, N2 + H2, etc. However, due to the differences in the molecular weights of these gases themselves, a series of challenges often occur during the gas mixing process. One of the most prominent problems is the gas stratification phenomenon, that is, gases with different molecular weights cannot be evenly mixed in the gas mixing system, but form different layers according to their respective densities. This phenomenon not only affects the accuracy and stability of gas mixing, but may also lead to fluctuations in subsequent processes and inconsistencies in product quality.

[0003] In order to overcome this problem, some prior arts mention the use of specially designed gas mixing devices to achieve uniform mixing of gases with different molecular weights by optimizing the gas flow path and mixing method. The application of these prior arts helps to improve the accuracy and stability of gas mixing, but it is still difficult to fully avoid uneven phenomena such as stratification in the gas mixing system.

[0004] Based on the above, there is an urgent need for a gas uniform mixing and blending system to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a gas uniform mixing and blending system, which can avoid uneven phenomena such as stratification in the gas mixing process and ensure the homogenization and consistency after gas mixing.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The gas uniform mixing and blending system includes a first intake branch, a second intake branch, a mixing pipeline, and a mixing tank, wherein:

[0008] The outlet ends of the first intake branch and the second intake branch are connected to the inlet end of the mixing pipeline. The first intake branch is used to input a first gas into the mixing pipeline, the second intake branch is used to input a second gas into the mixing pipeline, the mixing pipeline is provided with a gas mixing component, and the first gas and the second gas form a premixed gas after passing through the gas mixing component. And,

[0009] The mixing pipeline is inserted into the mixing tank, and the outlet end of the mixing pipeline is located below the middle of the mixing tank.

[0010] Preferably, the gas mixing component includes a gas mixer.

[0011] Preferably, the gas mixer includes a static mixer and / or a dynamic mixer.

[0012] Preferably, an air outlet is provided at the air outlet end of the mixing pipeline, and the axial direction of the air outlet is arranged at an angle with the vertical direction and faces the bottom of the mixing tank.

[0013] Preferably, the first intake branch includes a first pressure control unit and a first flow control unit, and the first gas sequentially passes through the first pressure control unit and the first flow control unit;

[0014] The second intake branch includes a second pressure control unit and a second flow control unit, and the second gas sequentially passes through the second pressure control unit and the second flow control unit.

[0015] Preferably, the first intake branch further includes a first filtering component, and after passing through the first filtering component, the first gas flows into the first pressure control unit and the first flow control unit;

[0016] The second intake branch further includes a second filtering component, and after passing through the second filtering component, the second gas flows into the second pressure control unit and the second flow control unit.

[0017] Preferably, the first intake branch further includes a first pressure sensor for identifying the pressure at the first pressure control unit;

[0018] The second intake branch further includes a second pressure sensor for identifying the pressure at the second pressure control unit.

[0019] Preferably, at least one stop valve is provided in each of the first intake branch and the second intake branch. After passing through one of the stop valves, the first gas flows into the first filtering component, and after passing through one of the stop valves, the second gas flows into the second filtering component.

[0020] Preferably, a stop valve is provided between the first flow control unit and the mixing pipeline, and a stop valve is provided between the second flow control unit and the mixing pipeline.

[0021] Preferably, the gas uniform mixing system further includes a third intake branch, the air outlet end of the third intake branch is connected to the air inlet end of the mixing pipeline, and the third intake branch is used to input a third gas into the mixing pipeline.

[0022] Advantages of the present utility model: By performing primary mixing in the mixing gas pipeline and arranging the outlet end of the mixing gas pipeline below the middle of the mixing tank in the mixing tank, when the pre-mixed gas from the primary mixing enters the mixing tank, a relatively strong flow is formed inside the mixing tank. Under the combined action of macroscopic flow and microscopic diffusion, the component gases are promoted to blend with each other, avoiding uneven phenomena such as stratification in the gas mixing process, and ensuring the uniformity and consistency after gas mixing. Description of the Drawings

[0023] Figure 1 is the connection diagram of the gas uniform mixing system provided by the present utility model;

[0024] Figure 2 is the perspective view of the gas uniform mixing system provided by the present utility model;

[0025] Figure 3 is Figure 1 the partial enlarged view of part A in

[0026] In the figure:

[0027] 10. First intake branch; 11. First filtration component; 12. First pressure control unit; 13. First flow control unit; 14. First pressure sensor; 15. Stop valve;

[0028] 20. Second intake branch; 21. Second filtration component; 22. Second pressure control unit; 23. Second flow control unit; 24. Second pressure sensor;

[0029] 30. Mixing gas pipeline; 31. Gas mixing component;

[0030] 40. Mixing tank. Detailed Embodiment

[0031] The present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.

[0032] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact of the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0034] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", "left", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0035] The following will introduce the gas uniform mixing system provided by the present utility model according to the attached Figure 1 to the attached Figure 3 drawings.

[0036] As Figure 1 shown, in this embodiment, the gas uniform mixing system includes a first intake branch 10, a second intake branch 20, a mixing pipeline 30 and a mixing tank 40. Among them, the outlet ends of the first intake branch 10 and the second intake branch 20 are connected to the intake end of the mixing pipeline 30. The first intake branch 10 is used to input a first gas into the mixing pipeline 30, and the second intake branch 20 is used to input a second gas into the mixing pipeline 30. The mixing pipeline 30 is provided with a gas mixing component 31, and the first gas and the second gas can be mixed to form a premixed gas after passing through the gas mixing component 31. At the same time, the mixing pipeline 30 is inserted into the mixing tank 40, and the outlet end of the mixing pipeline 30 is located below the middle of the mixing tank 40, so that during the process of the premixed gas being input into the interior of the mixing tank, it undergoes a tumbling reciprocating motion and a diffusion motion from bottom to top, promoting the mutual fusion of each component gas, and enabling the premixed gas to undergo secondary full mixing to achieve the purpose of gas homogenization.

[0037] By performing a primary mixing in the mixing gas pipeline 30 and setting the gas outlet end of the mixing gas pipeline 30 below the middle of the mixing tank 40, when the pre-mixed gas from the primary mixing enters the mixing tank 40, a relatively strong flow is formed inside the mixing tank 40. Under the combined action of macroscopic flow and microscopic diffusion, it promotes the mutual fusion of each component gas, avoids uneven phenomena such as stratification in the gas mixing process, and ensures the homogenization and consistency after gas mixing.

[0038] Specifically, the gas mixing component 31 is a key component to ensure the uniform mixing of two gases. In this embodiment, the gas mixing component 31 adopts an efficient gas mixer, which can be a static mixer. Through the complex internal structure, the two gases are subjected to multiple processes of division, combination, and re-division when flowing through, so as to achieve the uniform mixing of the gases. In addition, the gas mixer can also be a dynamic mixer, which actively stirs the gas through the internal rotating blades or agitators to further enhance the mixing effect.

[0039] Of course, in some embodiments, a static mixer and a dynamic mixer can also be set on the mixing gas pipeline 30 at the same time to obtain a better mixing effect, and the present utility model does not make specific limitations on this.

[0040] Preferably, as Figure 3 shown, in this embodiment, the gas outlet end of the mixing gas pipeline 30 is provided with a gas outlet and is inserted into the bottom of the mixing tank 40. The axial direction of the gas outlet is arranged at an angle with the vertical direction and is oriented towards the bottom of the mixing tank 40. By adjusting the direction of the gas outlet, it helps the gas to flow, distribute, and mix more widely in the tank, thereby further avoiding uneven phenomena such as stratification in the gas mixing process and enhancing the mixing effect.

[0041] Continuing to refer to Figure 1 、 Figure 2 shown, on the first intake branch 10 and the second intake branch 20, a first pressure control unit 12 and a second pressure control unit 22 are respectively provided. The first pressure control unit 12 and the second pressure control unit 22 can adopt pressure reducing valves to respectively adjust the pressures of the first gas and the second gas to prepare for the subsequent mixing. At the same time, on the first intake branch 10 and the second intake branch 20, a first flow control unit 13 and a second flow control unit 23 are also respectively provided. The first gas flows through the first pressure control unit 12 and the first flow control unit 13 in sequence, and the second gas flows through the second pressure control unit 22 and the second flow control unit 23 in sequence. The first flow control unit 13 and the second flow control unit 23 can adopt flow regulating valves to cooperate with the above-mentioned pressure reducing valves to respectively adjust the pressures and flows of the first gas and the second gas to achieve the adjustment of different mixing ratios.

[0042] Optionally, the first intake branch 10 further includes a first pressure sensor 14 for identifying the pressure at the first pressure control unit 12. Meanwhile, the second intake branch 20 further includes a second pressure sensor 24 for identifying the pressure at the second pressure control unit 22. The first pressure sensor 14 and the second pressure sensor 24 can further assist the first pressure control unit 12 and the second pressure control unit 22 in precisely adjusting the pressures of the first gas and the second gas.

[0043] Preferably, the first intake branch 10 further includes a first filtration assembly 11. After passing through the first filtration assembly 11, the first gas flows into the first pressure control unit 12 and the first flow control unit 13. Meanwhile, the second intake branch 20 further includes a second filtration assembly 21. After passing through the second filtration assembly 21, the second gas flows into the second pressure control unit 22 and the second flow control unit 23. The first filtration assembly 11 and the second filtration assembly 21 can further control the particle size of the first gas and the second gas, and can also assist in adjusting the mixing ratio in different proportions.

[0044] Optionally, a shut-off valve 15 is provided at the intake end of each of the first intake branch 10 and the second intake branch 20. After passing through a shut-off valve 15, the first gas flows into the first filtration assembly 11, and after passing through a shut-off valve 15, the second gas flows into the second filtration assembly 21. By providing the shut-off valve 15 at the intake end, it is possible to control whether the first gas flows into the first intake branch 10 and whether the second gas flows into the second intake branch 20, so as to quickly cut off the gas supply when necessary and ensure the safety of the mixing process.

[0045] Optionally, a shut-off valve 15 is also provided at the outlet end of each of the first intake branch 10 and the second intake branch 20, a shut-off valve 15 is provided between the first flow control unit 13 and the mixing pipeline 30, and a shut-off valve 15 is provided between the second flow control unit 23 and the mixing pipeline 30. The shut-off valve 15 at the outlet end can also cut off the gas flow when necessary, and can further ensure the safety of the mixing process and prevent phenomena such as backflow.

[0046] Further optionally, shut-off valves 15 are also provided between the first pressure regulating assembly and the first flow regulating assembly, and between the second pressure regulating assembly and the second flow regulating assembly, so as to be able to cut off in the middle sections of the first intake branch 10 and the second intake branch 20, and further ensure the safety of the mixing process.

[0047] Of course, in some other embodiments, the gas uniform mixing system may further include a third intake branch, and the outlet end of the third intake branch is connected to the intake end of the mixing pipeline 30, so that a third gas can be input into the mixing pipeline 30 through the third intake branch.

[0048] Optionally, the third intake branch is also provided with the above-mentioned cut-off valve 15, as well as a third filtration component, a third pressure control unit and a third flow control unit, so as to finely adjust the particle size, pressure and flow rate before the third gas is input into the mixing pipeline 30 to meet the corresponding mixing ratio requirements.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A gas uniform mixing and blending system, characterized in that, It includes a first intake branch (10), a second intake branch (20), a mixing pipeline (30) and a mixing tank (40), wherein: The outlet ends of the first intake branch (10) and the second intake branch (20) are connected to the inlet end of the mixing pipeline (30). The first intake branch (10) is used to input a first gas into the mixing pipeline (30), and the second intake branch (20) is used to input a second gas into the mixing pipeline (30). The mixing pipeline (30) is provided with a gas mixing assembly (31). The first gas and the second gas form a premixed gas after passing through the gas mixing assembly (31), and The mixing pipeline (30) is inserted into the mixing tank (40), and the outlet end of the mixing pipeline (30) is located below the middle of the mixing tank (40).

2. The gas uniform mixing system according to claim 1, wherein The gas mixing assembly (31) includes a gas mixer.

3. The gas uniform mixing system according to claim 2, wherein The gas mixer includes a static mixer and / or a dynamic mixer.

4. The gas uniform mixing system according to claim 1, wherein The outlet end of the mixing pipeline (30) is provided with an outlet. The axial direction of the outlet is arranged at an angle with the vertical direction and is arranged towards the bottom of the mixing tank (40).

5. The gas uniform mixing system according to claim 1, wherein The first intake branch (10) includes a first pressure control unit (12) and a first flow control unit (13). The first gas sequentially passes through the first pressure control unit (12) and the first flow control unit (13); The second intake branch (20) includes a second pressure control unit (22) and a second flow control unit (23). The second gas sequentially passes through the second pressure control unit (22) and the second flow control unit (23).

6. The gas uniform mixing system according to claim 5, wherein The first intake branch (10) further includes a first filtering assembly (11). After the first gas passes through the first filtering assembly (11), it flows into the first pressure control unit (12) and the first flow control unit (13); The second intake branch (20) further includes a second filtering assembly (21). After the second gas passes through the second filtering assembly (21), it flows into the second pressure control unit (22) and the second flow control unit (23).

7. The gas uniform mixing system according to claim 5, wherein The first intake branch (10) further includes a first pressure sensor (14). The first pressure sensor (14) is used to identify the pressure at the first pressure control unit (12); The second intake branch (20) further includes a second pressure sensor (24). The second pressure sensor (24) is used to identify the pressure at the second pressure control unit (22).

8. The gas uniform mixing system according to claim 6, wherein at least one shut-off valve (15) is provided in each of the first intake branch (10) and the second intake branch (20), the first gas flows into the first filtration assembly (11) after passing through one of the shut-off valves (15), and the second gas flows into the second filtration assembly (21) after passing through one of the shut-off valves (15).

9. The gas uniform mixing system according to claim 8, wherein a shut-off valve (15) is provided between the first flow control unit (13) and the mixing pipeline (30), and a shut-off valve (15) is provided between the second flow control unit (23) and the mixing pipeline (30).

10. The gas uniform mixing system according to any one of claims 1-9, wherein the gas uniform mixing system further includes a third intake branch, an outlet end of the third intake branch is connected to an intake end of the mixing pipeline (30), and the third intake branch is configured to input a third gas into the mixing pipeline (30).

Images