Gas mixing device

Abstract

The utility model provides a gas mixing device which comprises a first pipe body, a second pipe body and a dispersing part, the second pipe body is arranged in the first pipe body, and the first end of the second pipe body is arranged on the inner side wall of the first pipe body and communicates with the outside of the first pipe body; the second end of the second pipe body extends along the length direction of the first pipe body; the dispersing part is arranged at the ventilation opening of the second end, and the dispersing part and the ventilation opening are sequentially arranged in the direction from the air inlet end to the air outlet end of the first pipe body. And the cross section of the dispersing part is larger than that of the second end. The second pipe body is provided with the ventilation opening and the dispersing part, so that airflow entering the first pipe body from the inlet end is dispersed, and the section of the dispersing part is larger than that of the end, provided with the ventilation opening, of the second pipe body, so that a low-pressure space is formed on the side, away from the air inlet end of the first pipe body, of the dispersing part; and gas entering the first pipe body from the ventilation opening is filled into the low-pressure space and is mixed with the dispersed gas.

Description

Technical Field

[0001] The present application discloses a method for producing float glass, and in particular, a method for mixing gas. Background Art

[0002] In the production process of float cover glass, protective gas needs to be introduced into the tin bath. Protective gas plays a vital role. By reasonably introducing protective gas into the tin bath, an ideal oxygen-free or low-oxygen environment can be created to prevent the tin liquid from being oxidized at high temperature, thereby contaminating the glass surface and affecting product quality.

[0003] The main component of the protective gas is a mixed gas of nitrogen and hydrogen, in which nitrogen accounts for the main proportion. In the prior art, a three-way pipeline is used to connect the hydrogen pipeline with the nitrogen pipeline to form a mixed gas, which is then introduced into the tin bath.

[0004] However, the current method of connecting two pipes, introducing different types of gases into the pipes respectively, and merging them together to obtain a mixed protective gas can easily cause uneven and insufficient mixing of the gases. Even if the gases are introduced into the tin bath, they cannot provide sufficient protection, which ultimately affects the quality of the glass products. Utility Model Content

[0005] A technical problem to be solved by the present application is to allow different types of gases flowing through different pipelines to enter a gas mixing device for mixing before flowing out.

[0006] In order to solve the above-mentioned technical problems, the embodiment disclosed in the present application provides a gas mixing device, including: a first tube body, a second tube body and a dispersion part, the second tube body is arranged inside the first tube body, the first end of the second tube body is arranged on the inner wall of the first tube body and is connected with the outside of the first tube body; the second end of the second tube body extends along the length direction of the first tube body; the dispersion part is arranged at the ventilation opening of the second end of the second tube body, and the dispersion part and the ventilation opening are arranged in sequence from the air inlet end to the air outlet end of the first tube body; wherein the cross-section of the dispersion part is larger than the cross-section of the second end.

[0007] In some embodiments, there are multiple ventilation openings, and circumferentially spaced rings are arranged on the tube wall of the second end of the second tube body.

[0008] In some embodiments, the second end of the second tube body extends toward the air inlet end, and the dispersion portion is disposed at an end portion of the second end.

[0009] In some embodiments, the dispersion portion is conical and has a tip, and the tip of the dispersion portion is disposed toward the air inlet end.

[0010] In some embodiments, the dispersion portion is an umbrella-shaped structure having an arc surface, and the arc surface of the dispersion portion is arranged toward the air inlet end.

[0011] In some embodiments, the diffuser portion is a plate.

[0012] In some embodiments, the second end of the second tube body extends away from the air inlet end;

[0013] The dispersion portion is arranged around the outer peripheral side of the second tube body, and an angle is formed between the outer side wall of the dispersion portion and the outer side wall of the second tube body.

[0014] In some embodiments, the dispersion portion is provided with a plurality of diversion holes or diversion channels at intervals, and the diversion holes or diversion channels penetrate the dispersion portion.

[0015] In some embodiments, the diversion channel forms an angle with the outer side wall of the second tube.

[0016] In some embodiments, the axis of the second end of the second tube is colinear with the axis of the first tube.

[0017] Through the above technical scheme, the present application discloses a gas mixing device, in which a second tube body is arranged in a first tube body, and a dispersion portion is arranged at the end of the second tube body where a vent is arranged, the dispersion portion can disperse the airflow entering the first tube body from the entrance end, and the cross-section of the dispersion portion is larger than the cross-section of the end of the second tube body where the vent is arranged, so that a low-pressure space is formed on the side of the dispersion portion away from the air inlet end of the first tube body, so that the gas entering the first tube body from the vent is filled into the low-pressure space and mixed with the dispersed gas, thereby increasing the proportion of the gas passed into the second tube body in the unit volume of the mixed gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments disclosed in the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments disclosed in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the gas mixing device disclosed in the embodiment disclosed in this application;

[0020] Figure 2 It is another structural schematic diagram of the gas mixing device disclosed in the embodiment disclosed in this application;

[0021] Figure 3 This is a schematic diagram of the first type of dispersion unit structure disclosed in the embodiment disclosed in this application;

[0022] Figure 4 This is a schematic diagram of the second type of dispersion unit structure disclosed in the embodiment disclosed in this application;

[0023] Figure 5 This is a schematic diagram of the third dispersion unit structure disclosed in the disclosed embodiment of this application.

[0024] Description of reference numerals:

[0025] 1. First tube body; 2. Second tube body; 3. Dispersion part; 4. Ventilation port; 5. Diversion channel; 6. Diversion hole; 7. Low-pressure space. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the embodiments disclosed in the present application in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles disclosed in the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0027] The present application discloses and provides these embodiments in order to make the present application disclosed thoroughly and completely, and to fully express the scope disclosed in the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0028] It should be noted that, in the description disclosed in this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the disclosure of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the disclosure of this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] In addition, the words "first", "second" and similar words used in the disclosure of this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements.

[0030] It should also be noted that in the description disclosed in this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the disclosure of this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0031] All terms used in this application disclosure have the same meanings as those understood by those of ordinary skill in the art to which this application disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as those in general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] In the production process of float cover glass, it is necessary to introduce protective gas into the tin bath. The protective gas can prevent the oxidation of tin liquid. By reasonably introducing protective gas into the tin bath, an ideal oxygen-free or low-oxygen environment can be created to prevent the oxidation of tin liquid at high temperature, thereby contaminating the glass surface and affecting product quality. The main components of the protective gas are nitrogen and hydrogen, among which nitrogen as an inert gas accounts for a larger proportion, and hydrogen accounts for a smaller proportion. The two gases are mixed to form a protective gas. In the existing production line, the protective gas is formed through a three-way pipeline. The nitrogen pipeline is used as the main pipeline, one end of which enters nitrogen and the other end is connected to the inside of the tin bath. The hydrogen pipeline is used as a branch pipeline, one end of which enters hydrogen and the other end is connected to the pipe wall of the nitrogen pipeline. Based on the above pipeline connection method, the mixing process of the two gases is that the hydrogen just enters the nitrogen pipeline and contacts the nitrogen, and then is washed away by the nitrogen near the hydrogen, resulting in a larger hydrogen content in the nitrogen near the hydrogen outlet and a smaller hydrogen content in the nitrogen far away from the hydrogen outlet, resulting in uneven and insufficient mixing of the two gases in the protective gas. Among them, if the volume ratio of hydrogen in the unit volume of the protective gas is too low, the tin oxide floating in the tin bath cannot be fully reduced. The tin oxide falls on the glass surface and contaminates the glass cover product.

[0034] like Figure 1-2As shown, in order to make the two gases mix fully, the present application proposes a gas mixing device, including: a first tube body 1, a second tube body 2 and a dispersion portion 3, the second tube body 2 is arranged inside the first tube body 1, the first end of the second tube body 2 is arranged on the inner wall of the first tube body 1 and is connected to the outside of the first tube body 1; the second end of the second tube body 2 extends along the length direction of the first tube body 1; the dispersion portion 3 is arranged at the vent 4 at the second end of the second tube body 2, and the dispersion portion 3 and the vent 4 are arranged in sequence from the air inlet end to the air outlet end of the first tube body 1; wherein the cross-section of the dispersion portion 3 is larger than the cross-section of the second end.

[0035] Specifically, the first tube body 1 is a main pipe with a larger inner diameter and can be used to pass a first gas with a larger proportion, and has an outlet end and an inlet end; the second tube body 2 is a branch pipe with a smaller inner diameter and can be used to pass a second gas with a smaller proportion. The first tube body 1 and the second tube body 2 can be round tubes, rectangular tubes, or polygonal tubes, and both ends of the first tube body 1 and the second tube body 2 can be connected. The first end of the second tube body 2 can be fixedly connected to the inner side wall of the first tube body 1 by welding, and can also be detachably connected by an internal and external thread structure.

[0036] The flow rate and flow rate of the gas introduced can be controlled by the equipment at the delivery end, and the introduced gas is not limited to hydrogen and nitrogen, and any first gas and second gas that need to be mixed can be introduced.

[0037] In order to facilitate installation and connection, flanges are provided at both ends of the first tube body 1, and internal threads are provided on the inner wall of the tube body at the first end of the second tube body 2, and the internal threads can be detachably connected to the second gas delivery pipe provided with external threads. The first end of the second tube body 2 can also be extended and extended outside the first tube body 1, and a flange is added at the end of the first end for connecting the second gas delivery pipe.

[0038] The second end of the second tube body 2 extends along the length direction of the first tube body 1 and can be directed toward the air inlet end or the air outlet end of the first tube body 1. The second end of the second tube body 2 can be located at any height inside the first tube body 1. The angle between the first end of the second tube body 2 and the axis of the tube body at the second end can be an acute angle, an obtuse angle or a right angle.

[0039] The dispersion portion 3 is arranged at the vent 4 at the second end and always faces the air inlet end of the first tube body 1 . The vent 4 is arranged on a side of the dispersion portion 3 away from the air inlet end.

[0040] Among them, the cross-section of the dispersion portion 3 is larger than the cross-section of the second end of the second tube body 2 provided with the vent 4. The dispersion portion 3 can disperse the first gas entering the air inlet end, so that the second gas entering the first tube body 1 from the vent 4 is mixed with the dispersed first gas. Moreover, since the cross-section of the dispersion portion 3 is larger than the cross-section of the second end, the first gas, when flowing through the dispersion portion 3, forms a low-pressure space 7 on the side of the dispersion portion 3 away from the air inlet end, so that after the second gas enters the first tube body 1, it fills into the low-pressure space 7, so that the second gas specific gravity of the mixed gas per unit volume of the dispersion portion 3 away from the air inlet end area increases, thereby achieving the effect of fully mixing the second gas entering the first tube body 1 with the first gas.

[0041] It should be noted that the first gas and the second gas are used to conveniently describe the mixing process of the two gases, and are not specific types of gases. The first gas and the second gas can also be referred to as one gas and the other gas. They can be the same gas but with different densities or temperatures.

[0042] A gas mixing device proposed in the present application is provided with a second tube body 2 in a first tube body 1, and a dispersion portion 3 is provided at the end of the second tube body 2 provided with a vent 4, the dispersion portion 3 can disperse the airflow entering the first tube body 1 from the entrance end, and the cross-section of the dispersion portion 3 is larger than the cross-section of the end of the second tube body 2 provided with the vent 4, so that a low-pressure space 7 is formed on the side of the dispersion portion 3 away from the air inlet end of the first tube body 1, so that the gas entering the first tube body 1 through the vent 4 fills the low-pressure space 7 and mixes with the dispersed gas, thereby increasing the proportion of the gas passed into the second tube body 2 in the unit volume of the mixed gas.

[0043] When the device is applied to a float glass production line, it can be assembled on a protective gas delivery pipeline, in particular, the first tube body 1 is connected to a nitrogen pipeline, the second tube body 2 is connected to a hydrogen pipeline, and the other end of the first tube body 1 is connected to a tin bath protective gas input end. The inner diameter of the first tube body 1 is larger than the inner diameter of the nitrogen delivery pipe.

[0044] In some embodiments, Figure 1-2 As shown, there are multiple ventilation openings 4, which are arranged in a circumferentially spaced ring on the tube wall of the second end of the second tube body 2.

[0045] Specifically, in order to help the gas in the second tube body 2 diffuse in the first tube body 1, increase the contact area of ​​the two gases, and achieve a sufficient mixing effect, the shape of the vent 4 can be various, such as diamond-shaped, circular, or strip-shaped holes, and is arranged on the tube wall in a manner of being spaced around the second tube body 2, so that the gas in the second tube body 2 is dispersed along the circumference of the tube wall and mixed with the gas flushed away by the dispersed portion 3.

[0046] The length of the second end provided with the ventilation openings 4 is not limited. The longer the length is, the more ventilation openings 4 are arranged at the second end, and the better the gas diffusion effect is.

[0047] In some embodiments, Figure 1 As shown, the second end of the second tube body 2 extends toward the air inlet end, and the dispersion portion 3 is arranged at the end of the second end.

[0048] Specifically, the second end extends toward the air inlet end of the first tube body 1. At this time, the dispersion portion 3 is arranged at the end of the second end by a detachable connection method such as threaded connection, nesting, plug-in or fixed connection method, such as welding. The shape of the dispersion portion 3 can be a plate-like member with a certain thickness or a polyhedron with a certain volume.

[0049] In some embodiments, Figure 3 As shown, the dispersion portion 3 is conical and has a tip, and the tip of the dispersion portion 3 is arranged toward the air inlet end.

[0050] Specifically, the dispersion part 3 is a cone, the bottom end of the cone is arranged at the end of the second end, and the tip of the cone is arranged away from the bottom end and toward the air inlet end. The conical dispersion part 3 uses the tip of the cone to disperse the airflow entering from the air inlet end, and guides and diffuses it along the outer wall of the cone to the bottom of the cone, and a low-pressure space 7 is formed at the bottom near the vent 4, for the gas flowing out of the vent 4 to fill the low-pressure space 7, and increases the contact surface with the gas in the first tube 1 to achieve a full mixing effect.

[0051] In particular, it is mixed with the gas flowing out from the ventilation opening 4 arranged around the second end of the second tube body 2 and diffused to the surroundings.

[0052] In some embodiments, Figure 4 As shown, the dispersion portion 3 is an umbrella-shaped structure with an arc surface, and the arc surface of the dispersion portion 3 is arranged toward the air inlet end.

[0053] Specifically, the dispersion portion 3 adopts an umbrella-shaped structure, with the arc surface of the umbrella-shaped structure facing the air inlet end, which is used to guide the gas flowing from the diffusion inlet end and diffuse it along the edge of the umbrella-shaped structure, thereby increasing the contact area with the gas flowing out of the vent 4, and forming a low-pressure space 7 at the edge end of the umbrella-shaped structure near the vent 4 to achieve a sufficient mixing effect.

[0054] In some embodiments, Figure 5 As shown, the dispersion portion 3 is a plate member.

[0055] Specifically, one end face of the plate faces the air inlet end, and the other end face is fixedly arranged at the end of the second end of the second tube body 2. The plate can block the gas flowing in from the air inlet end, slow down the flow rate, and form a low-pressure space 7 at the other side adjacent to the vent 4, so that the gas in the second tube body 2 can enter and gather in the low-pressure space 7, and then flow to the outlet end together with the gas in the first tube body 1, thereby achieving a mixing effect.

[0056] In some embodiments, Figure 2 As shown, the second end of the second tube body 2 extends away from the air inlet end;

[0057] The dispersion portion 3 is disposed around the outer circumference of the second tube body 2 , and an angle is formed between the outer wall of the dispersion portion 3 and the outer wall of the second tube body 2 .

[0058] Specifically, when the second end is arranged away from the direction of the air inlet end, the dispersion portion 3 is arranged in a ring on the outer peripheral side of the second tube body 2, and the angle between the outer wall of the dispersion portion 3 and the outer wall of the second tube body 2 is in the range of 1°-90°, including 90°. Among them, when the angle is 90°, the obstruction to the gas flowing in the first tube body 1 is the greatest, so that the low-pressure space 7 formed can accommodate and gather more gas flowing out of the second tube body 2.

[0059] In some embodiments, Figure 3-5 As shown, the dispersion portion 3 is provided with a plurality of flow diversion holes 6 or flow diversion channels 5 at intervals, and the flow diversion holes 6 or flow diversion channels 5 pass through the dispersion portion 3 .

[0060] Specifically, in order to further fully mix the gas, a diversion hole 6 is provided on the dispersing portion 3 of the plate-like member, and a diversion channel 5 is provided on the dispersing portion 3 of the polyhedron. The diversion hole 6 and the diversion channel 5 penetrate the dispersing portion 3 to allow the gas in the first tube body 1 to pass through, thereby dispersing and diverting the gas into multiple airflows, which are then mixed with the gas flowing out of the vent 4, thereby achieving a more complete mixing effect.

[0061] In some embodiments, the flow dividing channel 5 forms an angle with the outer side wall of the second tube body 2 .

[0062] Specifically, the angle between the diversion channel 5 of the dispersion part 3 and the outer wall of the second tube body 2 is not limited and can be set arbitrarily, so that the gas in the first tube body 1 is dispersed after passing through the diversion channel 5 to form multiple airflows, disrupting the stable flow state of the gas and achieving a full mixing effect.

[0063] In some embodiments, Figure 1-2 As shown, the axis of the second end of the second tube body 2 is colinear with the axis of the first tube body 1 .

[0064] Specifically, the second end is arranged colinearly with the axis of the first tube body 1, so that the second section of the second tube body 2 is arranged at a central position in the space of the first tube body 1. This arrangement enables the gas flowing out of the second tube body 2 to fully contact the gas flowing in the first tube body 1, thereby achieving sufficient mixing.

[0065] So far, the various embodiments disclosed in the present application have been described in detail. In order to avoid obscuring the concept disclosed in the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0066] Although some specific embodiments disclosed in the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are only for illustration, and are not intended to limit the scope disclosed in the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit disclosed in the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments may be combined in any manner.

Claims

1. A gas mixing device, characterized in that: include: first tube body(1); A second tube body (2) is arranged inside the first tube body (1); a first end of the second tube body (2) is arranged on the inner side wall of the first tube body (1) and is in communication with the outside of the first tube body (1); and a second end of the second tube body (2) extends along the length direction of the first tube body (1); and a dispersion portion (3), the dispersion portion (3) being arranged at the vent (4) at the second end of the second tube (2), and the dispersion portion (3) and the vent (4) being arranged in sequence along the direction from the air inlet end to the air outlet end of the first tube (1); Wherein, the cross-section of the dispersion portion (3) is larger than the cross-section of the second end where the ventilation opening (4) is provided.

2. The gas mixing device according to claim 1, characterized in that: There are a plurality of ventilation openings (4), and a circumferential spacing ring is arranged on the tube wall of the second end of the second tube body (2).

3. The gas mixing device according to claim 2, characterized in that: The second end of the second tube body (2) extends toward the air inlet end, and the dispersion portion (3) is arranged at the end of the second end.

4. The gas mixing device according to claim 3, characterized in that: The dispersion portion (3) is conical and has a tip, and the tip of the dispersion portion (3) is arranged toward the air inlet end.

5. The gas mixing device according to claim 3, characterized in that: The dispersion portion (3) is an umbrella-shaped structure having an arc surface, and the arc surface of the dispersion portion (3) is arranged toward the air inlet end.

6. The gas mixing device according to claim 3, characterized in that: The dispersion portion (3) is a plate.

7. The gas mixing device according to claim 2, characterized in that: The second end of the second tube (2) extends away from the air inlet end; The dispersion portion (3) is arranged on the outer peripheral side of the second tube body (2), and an angle is formed between the outer side wall of the dispersion portion (3) and the outer side wall of the second tube body (2).

8. The gas mixing device according to any one of claims 1 to 7, characterized in that: The dispersion portion (3) is provided with a plurality of flow diversion holes (6) or flow diversion channels (5) at intervals, and the flow diversion holes (6) or the flow diversion channels (5) penetrate the dispersion portion (3).

9. The gas mixing device according to any one of claim 8, characterized in that: The diversion channel (5) forms an angle with the outer side wall of the second tube body (2).

10. The gas mixing device according to any one of claims 1 to 7 or 9, characterized in that: The axis of the second end of the second tube (2) is colinear with the axis of the first tube (1).

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