CN219232165U

CN219232165U - Gas mixing device

Info

Publication number: CN219232165U
Application number: CN202320157216.3U
Authority: CN
Inventors: 王洋; 沈雪松
Original assignee: Shandong Guochuang Fuel Cell Technology Innovation Center Co ltd
Current assignee: Shandong Guochuang Fuel Cell Technology Innovation Center Co ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-06-23
Anticipated expiration: 2033-02-08

Abstract

The utility model belongs to the technical field of gas mixing, and discloses gas mixing equipment, which is used for mixing first gas and second gas, wherein an air inlet main pipe is used for allowing the first gas to pass through, an air inlet branch pipe is used for allowing the second gas to pass through, a gas mixing pipe is arranged in the air inlet main pipe, the gas mixing pipe is provided with a first end and a second end, the first end is provided with an opening, the second end is provided with a first ventilation structure, the first gas in the air inlet main pipe can enter the gas mixing pipe from the opening, the second gas in the air inlet branch pipe can enter the gas mixing pipe and be mixed with the first gas in the gas mixing pipe, so that the first gas and the second gas can be primarily mixed in the gas mixing pipe, the mixed gas in the gas mixing pipe can flow out of the gas mixing pipe through the first ventilation structure, and the mixed gas in the gas mixing pipe can be mixed with the first gas in the air inlet main pipe again, so that the two gases are uniformly mixed, and in addition, the gas pressure drop of the gas mixing equipment is small.

Description

Gas mixing device

Technical Field

The utility model relates to the technical field of gas mixing, in particular to gas mixing equipment.

Background

In some industrial processes, it is often desirable to mix the two gases uniformly. Conventional gas mixing structures typically provide a main conduit and two branch conduits connected to the main conduit such that the gases in the two branch conduits flow into the main conduit to effect mixing. However, this solution has problems in that the gas is unevenly mixed and the gas pressure drop is large.

In this regard, the prior art provides a low pressure drop gas mixing device, wherein a main flow gas pipeline is sleeved on a longitudinal main pipe, the longitudinal main pipe is connected with a longitudinal branch pipe, and the side wall of the longitudinal branch pipe is provided with a plurality of small holes for ventilation. The main flow gas flows from the main flow gas pipe, and the mixed gas enters the longitudinal main pipe from the mixed gas pipe, is ejected out through the small holes of the longitudinal branch pipes, and is mixed with the main flow gas in the main flow gas pipe. The proposal can reduce the pressure drop of the gas and lead the gas to be mixed more uniformly, but has the problems that the mixed gas is sprayed out through the small holes of the longitudinal branch pipes and is mixed with the main flow gas, and the whole process only involves one-time gas mixing, and the mixing effect is still poor.

Disclosure of Invention

According to one aspect of the utility model, the utility model provides a gas mixing device, so as to solve the problem that in the gas mixing process of the gas mixing device in the prior art, the mixed gas and the main stream gas are mixed only once, and the gas mixing effect is still poor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a gas mixing apparatus for mixing a first gas with a second gas, comprising:

the air inlet main pipe is used for allowing the first gas to pass through;

the air inlet branch pipe penetrates through the outer wall of the air inlet main pipe and is used for allowing the second gas to pass through;

the gas mixing pipe is arranged in the gas inlet main pipe, the gas mixing pipe is provided with a first end and a second end, the first end is provided with an opening, the second end is provided with a first ventilation structure, the first gas in the gas inlet main pipe can enter the gas mixing pipe from the opening, the gas inlet branch pipe is connected to the outer wall of the gas mixing pipe, the second gas in the gas inlet branch pipe can enter the gas mixing pipe and is mixed with the first gas in the gas mixing pipe, and the mixed gas in the gas mixing pipe can flow out of the gas mixing pipe through the first ventilation structure.

As a preferable mode of the gas mixing device, the first ventilation structure comprises a plurality of first ventilation hole groups which are arranged at intervals along the circumferential direction, and the first ventilation hole groups are all used for allowing the mixed gas to pass through.

As the preferred scheme of gas mixing equipment, first bleeder vent group includes a plurality of first bleeder vents, and a plurality of first bleeder vents are followed the length direction interval of gas mixing pipe set up in the lateral wall of gas mixing pipe, a plurality of first bleeder vents all are used for the mist passes through.

As the preferable scheme of the gas mixing equipment, the inner wall of the air inlet main pipe and the outer wall of the gas mixing pipe are arranged at intervals.

As a preferred embodiment of the gas mixing device, the end face of the second end is adapted to block the passage of gas.

As the preferred scheme of gas mixing equipment, still include the gas mixing baffle, the inner wall of air inlet main pipe with the outer wall interval setting of gas mixing pipe, the gas mixing baffle set up in the air inlet main pipe the inner wall with between the outer wall of gas mixing pipe, the gas mixing baffle has third end and fourth end, the third end with the outer wall connection of gas mixing pipe, the fourth end with the inner wall connection of air inlet main pipe, the gas mixing baffle has the ventilative structure of second, the ventilative structure of second is used for first gas passes through.

As the preferable scheme of the gas mixing equipment, the central line of the gas mixing baffle plate, the central line of the air inlet main pipe and the central line of the gas mixing pipe are overlapped.

As the preferable scheme of the gas mixing equipment, the gas mixing baffle plate is in a horn shape, and the outer diameter of the gas mixing baffle plate is gradually increased along the flowing direction of the first gas.

As a preferable mode of the gas mixing device, the second ventilation structure comprises a plurality of second ventilation hole groups which are arranged at intervals along the circumferential direction, and the second ventilation hole groups are all used for allowing the first gas to pass through.

As the preferable scheme of gas mixing equipment, the second bleeder vent group includes a plurality of second bleeder vents, along the third end of gas mixing baffle extremely the fourth end, a plurality of second bleeder vent interval sets up, a plurality of the second bleeder vent is all used for first gas passes through.

The beneficial effects of the utility model are as follows:

the utility model provides gas mixing equipment, which is used for mixing first gas and second gas, wherein an air inlet main pipe is used for allowing the first gas to pass through, an air inlet branch pipe is used for allowing the second gas to pass through, a gas mixing pipe is arranged in the air inlet main pipe, the gas mixing pipe is provided with a first end and a second end, the first end is provided with an opening, the second end is provided with a first ventilation structure, the first gas in the air inlet main pipe can enter the gas mixing pipe from the opening, the second gas in the air inlet branch pipe can enter the gas mixing pipe and is mixed with the first gas in the gas mixing pipe, so that the first gas and the second gas can be primarily mixed in the gas mixing pipe, the mixed gas in the gas mixing pipe can flow out of the gas mixing pipe through the first ventilation structure, so that the mixed gas in the gas mixing pipe can be mixed with the first gas in the air inlet main pipe again uniformly, and in addition, the gas pressure drop of the gas mixing equipment is smaller under the same gas mixing effect.

Drawings

FIG. 1 is a schematic view of a gas mixing apparatus according to an embodiment of the present utility model;

fig. 2 is a schematic side view of a gas mixing apparatus in an embodiment of the utility model.

In the figure:

1. an air inlet main pipe;

2. an air inlet branch pipe;

3. a gas mixing pipe; 31. a first ventilation structure; 32. a first vent group; 33. a first ventilation hole; 34. an opening;

4. a gas mixing baffle; 41. a second ventilation structure; 42. a second vent group; 43. and a second ventilation hole.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

In some industrial processes, it is desirable to mix the two gases uniformly. The conventional gas mixing structure is generally provided with a main pipeline and two branch pipelines connected with the main pipeline, so that the gas in the two branch pipelines flows into the main pipeline to complete mixing, but the scheme has the problems of uneven gas mixing and larger gas pressure drop. In this regard, the prior art provides a low pressure drop gas mixing device, in which a main flow gas pipe is sleeved on a longitudinal main pipe, the longitudinal main pipe is connected with a longitudinal branch pipe, a plurality of small holes for ventilation are formed in the side wall of the longitudinal branch pipe, main flow gas flows from the main flow gas pipe, mixed gas enters the longitudinal main pipe from the mixed gas pipe, and then is sprayed out through the small holes of the longitudinal branch pipe to mix with main flow gas in the main flow gas pipe. The proposal can reduce the pressure drop of the gas and lead the gas to be mixed more uniformly, but has the problems that the mixed gas is sprayed out through the small holes of the longitudinal branch pipes and is mixed with the main flow gas, and the whole process only involves one-time gas mixing, and the mixing effect is still poor.

Aiming at the problems, the embodiment provides the gas mixing equipment to solve the problem that in the gas mixing process of the gas mixing equipment in the prior art, the mixed gas and the main stream gas are mixed only once, and the gas mixing effect is still poor, and the gas mixing equipment can be used in the technical field of gas mixing.

Referring to fig. 1, the gas mixing apparatus is for mixing a first gas with a second gas, and specifically, includes an intake main pipe 1, an intake branch pipe 2, and a gas mixing pipe 3, the intake main pipe 1 being for passage of the first gas. The air inlet branch pipe 2 penetrates through the outer wall of the air inlet main pipe 1, and the air inlet branch pipe 2 is used for passing second gas. The gas mixing pipe 3 is arranged in the gas inlet main pipe 1, the gas mixing pipe 3 is provided with a first end and a second end, the first end is provided with an opening 34, the second end is provided with a first ventilation structure 31, first gas in the gas inlet main pipe 1 can enter the gas mixing pipe 3 from the opening 34, the gas inlet branch pipe 2 is connected to the outer wall of the gas mixing pipe 3, second gas in the gas inlet branch pipe 2 can enter the gas mixing pipe 3 and is mixed with the first gas in the gas mixing pipe 3, and therefore the first gas and the second gas are primarily mixed in the gas mixing pipe 3. The mixed gas in the gas mixing pipe 3 can flow out of the gas mixing pipe 3 through the first ventilation structure 31, so that the mixed gas in the gas mixing pipe 3 can be mixed with the first gas in the air inlet main pipe 1 again, so that the mixing of the two gases is more uniform, and in addition, the gas pressure drop of the gas mixing device is smaller under the same gas mixing effect.

With continued reference to fig. 1, in this embodiment, the inner wall of the air intake main pipe 1 and the outer wall of the air mixing pipe 3 are disposed at intervals, so that the mixed gas in the air mixing pipe 3 can flow between the outer wall of the air mixing pipe 3 and the inner wall of the air intake main pipe 1, and is fully mixed with the first gas between the outer wall of the air mixing pipe 3 and the inner wall of the air intake main pipe 1, thereby improving the gas mixing effect.

With continued reference to fig. 1, the first ventilation structure 31 includes a plurality of first ventilation hole sets 32 disposed at intervals along a circumferential direction, and the plurality of first ventilation hole sets 32 are all used for the mixed gas to pass through. The plurality of first vent groups 32 are arranged at intervals along the circumferential direction, so that the mixed gas is diffused to the periphery along the radial direction of the gas mixing pipe 3 through the side wall of the gas mixing pipe 3, and the mixed gas can be uniformly mixed with the first gas in the air inlet main pipe 1 after flowing out of the gas mixing pipe 3.

Alternatively, the first air hole group 32 includes a plurality of first air holes 33, the plurality of first air holes 33 are arranged at intervals along the length direction of the air mixing pipe 3, and the plurality of first air holes 33 are all used for the mixed gas to pass through. The first ventilation holes 33 are arranged at intervals along the length direction of the gas mixing pipe 3, so that the mixed gas can diffuse out of the gas mixing pipe 3 along the length direction of the gas mixing pipe 3, and the mixing effect of the mixed gas in the gas mixing pipe 3 and the first gas in the air inlet main pipe 1 is further improved.

With continued reference to fig. 1, in order to enhance the ventilation effect of the first ventilation holes 33, so that the mixed gas in the gas mixing pipe 3 can be fully mixed with the first gas in the main gas inlet pipe 1, in this embodiment, the end face of the second end is used for blocking the gas from passing through, that is, the second end is a blind end, so that the mixed gas in the gas mixing pipe 3 is completely discharged through the plurality of first ventilation holes 33. In the gas mixing apparatus in the present embodiment, primary mixing of the gases occurs in the gas mixing pipe 3 after the first gas in the intake main pipe 1 enters the gas mixing pipe 3 through the opening 34, and the second gas in the intake branch pipe 2 also enters the gas mixing pipe 3. The secondary mixing is that the mixed gas in the gas mixing pipe 3 flows out through the first ventilation structure 31 and then is mixed with the first gas in the air inlet main pipe 1, and the mixing effect after the secondary mixing and the mixing ratio of the two gases can directly influence the overall gas mixing effect and the gas mixing proportion of the gas mixing device. The flow of the mixed gas in the gas mixing pipe 3 can be adjusted by changing the gas mixing pipes 3 with different nominal diameters or by changing the specific opening number, the pore diameter and other structural parameters of the first ventilation structure 31, and the flow of the first gas in the air inlet main pipe 1 is adjusted, and the following structures are provided in this embodiment:

referring to fig. 1-2, the gas mixing apparatus further includes a gas mixing baffle 4, the gas mixing baffle 4 is disposed between the inner wall of the gas inlet main pipe 1 and the outer wall of the gas mixing pipe 3, the gas mixing baffle 4 has a third end and a fourth end, the third end is connected with the outer wall of the gas mixing pipe 3, the fourth end is connected with the inner wall of the gas inlet main pipe 1, the gas mixing baffle 4 has a second ventilation structure 41, and the second ventilation structure 41 is used for passing the first gas. Through setting up the gas mixing baffle 4 to set up second ventilation structure 41 on gas mixing baffle 4, and be used for first gas to pass through, so that first gas carries out secondary mixing with the mixed gas in the gas mixing pipe 3, simultaneously, through changing the size of gas mixing baffle 4 or adjusting the ventilation volume of second ventilation structure 41, can adjust the flow or the velocity of flow that first gas permeated through second ventilation structure 41, thereby change the mixed proportion of first gas and the mixed gas in the gas mixing pipe 3, and then adjust the whole gas mixing proportion of gas mixing equipment.

With continued reference to fig. 1-2, the center line of the air-mixing baffle 4, the center line of the air-intake main pipe 1, and the center line of the air-mixing pipe 3 coincide. Thereby make the inner wall of air inlet main pipe 1 and the influence of gas mixing baffle 4 to the mixed gas who flows out gas mixing pipe 3 unanimous, further promote the effect of gas mixing, in addition, the setting like this can also make the size of gas mixing baffle 4 along the circumferencial direction unanimous, avoids producing the influence to the flow of first gas because of the shape change of gas mixing baffle 4.

With continued reference to fig. 1-2, the gas mixing baffle 4 is in a horn shape, and the outer diameter of the gas mixing baffle 4 gradually increases along the flow direction of the first gas, so that the contact area between the first gas in the air inlet main pipe 1 and the mixed gas in the gas mixing pipe 3 is increased, and the gas mixing effect is further improved.

With continued reference to fig. 1-2, and with continued reference to fig. 1-2, the second ventilation structure 41 includes a plurality of second ventilation hole sets 42 disposed at intervals along a circumferential direction, and the plurality of second ventilation hole sets 42 are all used for passing the first gas, so that the first gas can uniformly permeate the gas mixing baffle 4 from the gas mixing baffle 4 along different directions around the outer peripheral wall of the gas mixing pipe 3, and the gas is uniformly mixed.

With continued reference to fig. 1-2, the second ventilation hole set 42 includes a plurality of second ventilation holes 43, and the plurality of second ventilation holes 43 are spaced along the third end to the fourth end of the air mixing baffle 4, and the plurality of second ventilation holes 43 are all used for passing the first gas. By the arrangement, when the first gas in the air inlet main pipe 1 flows to the other side of the gas mixing baffle plate 4, the first gas uniformly penetrates through the gas mixing baffle plate 4 along the direction from the third end to the fourth end, so that the mixing effect of the mixed gas and the first gas in the air inlet main pipe 1 is further improved.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A gas mixing apparatus for mixing a first gas with a second gas, comprising:

an air intake main pipe (1) for passing the first gas;

the air inlet branch pipe (2) penetrates through the outer wall of the air inlet main pipe (1), and the air inlet branch pipe (2) is used for the second gas to pass through;

the utility model provides a gas mixing pipe (3), set up in the inside of air inlet main pipe (1), gas mixing pipe (3) have first end and second end, first end has opening (34), the second end has first ventilative structure (31), in air inlet main pipe (1) first gas can follow opening (34) get into in gas mixing pipe (3), inlet manifold (2) connect in the outer wall of gas mixing pipe (3), second gas in inlet manifold (2) can get into in gas mixing pipe (3), and with in gas mixing pipe (3) first gas mixture, the mixed gas in gas mixing pipe (3) can flow out through first ventilative structure (31) gas mixing pipe (3).

2. The gas mixing device according to claim 1, wherein the first ventilation structure (31) includes a plurality of first ventilation hole groups (32) arranged at intervals in a circumferential direction, the plurality of first ventilation hole groups (32) being each for the mixed gas to pass through.

3. The gas mixing device according to claim 2, wherein the first vent group (32) includes a plurality of first vents (33), the plurality of first vents (33) are disposed on a side wall of the gas mixing tube (3) at intervals along a length direction of the gas mixing tube (3), and the plurality of first vents (33) are all used for the passage of the mixed gas.

4. The gas mixing device according to claim 1, characterized in that the inner wall of the inlet main pipe (1) is arranged at a distance from the outer wall of the gas mixing pipe (3).

5. The gas mixing device of claim 1, wherein an end face of the second end is configured to block passage of gas.

6. The gas mixing device according to any one of claims 1-5, further comprising a gas mixing baffle (4), wherein the inner wall of the gas inlet main pipe (1) is arranged at intervals from the outer wall of the gas mixing pipe (3), the gas mixing baffle (4) is arranged between the inner wall of the gas inlet main pipe (1) and the outer wall of the gas mixing pipe (3), the gas mixing baffle (4) is provided with a third end and a fourth end, the third end is connected with the outer wall of the gas mixing pipe (3), the fourth end is connected with the inner wall of the gas inlet main pipe (1), the gas mixing baffle (4) is provided with a second ventilation structure (41), and the second ventilation structure (41) is used for the passage of the first gas.

7. The gas mixing device according to claim 6, characterized in that the centre line of the gas mixing baffle (4), the centre line of the gas inlet main pipe (1) and the centre line of the gas mixing pipe (3) coincide.

8. The gas mixing device according to claim 7, wherein the gas-mixing baffle (4) is horn-shaped and the outer diameter of the gas-mixing baffle (4) gradually increases in the flow direction of the first gas.

9. The gas mixing device according to claim 6, wherein the second ventilation structure (41) includes a plurality of second ventilation hole groups (42) arranged at intervals in a circumferential direction, the plurality of second ventilation hole groups (42) each being for the passage of the first gas.

10. The gas mixing device according to claim 9, wherein the second set of ventilation holes (42) comprises a plurality of second ventilation holes (43), the plurality of second ventilation holes (43) being arranged at intervals along the third end to the fourth end of the gas-mixing baffle (4), the plurality of second ventilation holes (43) being all for the passage of the first gas.