Gas mixing and homogenizing device

Abstract

The invention discloses a gas mixing and homogenizing device which comprises a gas mixing sub-device and a gas homogenizing sub-device, wherein the gas mixing sub-device is used for mixing two different gases; and the gas uniformizing sub-device is used for uniformizing the speed of the gas mixed by the gas mixing sub-device and discharging the gas. The gas mixing sub-device comprises a first mixing module for performing primary mixing on gases with different pressure intensities, and a second mixing module for stirring and accelerating the flow of the gases subjected to the primary mixing to form secondary mixed gases. The first mixing module comprises a gas mixing pipe; a division pipe is concentrically arranged in the gas mixing pipe and is used for dividing the interior of the gas mixing pipe into a first gas cabin and a second gas cabin; laval spray pipes are evenly arranged on the pipe wall of the separation pipe and used for mixing low-pressure gas in the second gas cabin into the first gas cabin, and primary mixed gas is formed. The device is beneficial to improving the production and experiment precision, guaranteeing the reaction efficiency and quality of chemical production, reducing experiment errors and improving the mixing efficiency, and is suitable for large-scale production or scenes with high speed requirements.

Description

Technical Field

[0001] The invention belongs to the field of gas mixing and homogenization, and relates to a gas mixing and homogenizing device. Background Art

[0002] In many industrial production processes and scientific experiments, it is often necessary to mix and homogenize gases of different types and pressure states. For example, in chemical production, some chemical reactions require multiple reaction gases in precise proportions and uniform mixtures to ensure the efficiency and stability of the reaction; in environmental simulation experiments, it is also necessary to simulate a gas environment with specific components and uniform distribution.

[0003] Traditional gas mixing methods often have many shortcomings. Some simple gas mixing devices only converge different gases through a single pipe, and cannot effectively deal with problems such as turbulence generated when gases of different pressures are mixed, resulting in uneven gas mixing. Moreover, there is a lack of effective homogenization measures for the mixed gas, which makes the composition and pressure of the gas vary greatly at different locations during subsequent transportation and use, affecting the use effect and the accuracy of experiments and production. In addition, the mixing efficiency of existing devices needs to be improved, and cannot meet the requirements of large-scale production or complex experiments for fast and efficient gas mixing and homogenization. Summary of the invention

[0004] In order to solve the above problems, the technical solution adopted by the present invention is: a gas mixing and homogenizing device,

[0005] It includes a gas mixing sub-device: used for mixing two different gases;

[0006] Gas equalizing sub-device: It is used to make the gas mixed by the gas mixing sub-device uniform in speed and discharge it.

[0007] Furthermore: the gas mixing sub-device includes a first mixing module for performing primary mixing on gases of different pressures, and a second mixing module for stirring and accelerating the flow of the primary mixed gas to form a secondary mixed gas.

[0008] Furthermore: the first mixing module

[0009] Including mixing tube;

[0010] A dividing tube is concentrically arranged inside the mixing tube, and the dividing tube is used to divide the inside of the mixing tube into a first air chamber and a second air chamber;

[0011] The first gas chamber is used to introduce the high-pressure first gas;

[0012] Second gas chamber: used for introducing low-pressure second gas;

[0013] The first air chamber is arranged outside the second air chamber;

[0014] Rafale nozzles are evenly arranged on the tube wall of the separation tube, and are used to mix the low-pressure gas in the second gas chamber into the first gas chamber to form a primary mixed gas.

[0015] Furthermore: the second mixing module includes a mixing chamber, and a fan stirring module is arranged inside the mixing chamber to stir and accelerate the flow of the primary mixed gas output by the first gas chamber to form a secondary mixed gas, where the gas circulates multiple times to improve the mixing efficiency.

[0016] Furthermore: a baffle is provided between the mixing pipe and the mixing chamber, and a plurality of mixing chamber inlets are provided on the baffle.

[0017] Further: the gas equalization sub-device includes a gas equalization chamber,

[0018] A nozzle module connected to the gas mixing sub-device is arranged inside the gas homogenizing chamber for uniformly spraying the mixed gas;

[0019] The nozzle module comprises a cross pipe rack, and a plurality of sub-pipe racks are arranged at equal intervals based on the geometric shape of the uniform air chamber and the center of the cross pipe rack as a circle center;

[0020] The lower surface of the nozzle is provided with a plurality of injection holes at equal intervals;

[0021] A tilting block is provided at the bottom of the gas homogenizing chamber and below the nozzle module, for ensuring that the flow velocity of the gas is consistent after rebounding according to the mixed pressure characteristics;

[0022] An air-equalizing plate is provided on the upper part of the air-equalizing chamber to ensure that the speed of the mixed gas is uniform;

[0023] An air outlet pipe is provided on the top of the gas homogenizing chamber for the mixed gas to flow out at a uniform speed.

[0024] The gas mixing and equalizing device provided by the present invention has the following advantages: it can efficiently mix gases of different pressures, and its unique high-pressure gas chamber, low-pressure gas chamber, low-pressure gas outlet and baffle design realize one-time mixing, and the fan in the mixing chamber helps to accelerate multiple cycles of stirring and fully mix the gas. At the same time, it has a good equalizing effect. The Rafale nozzle, the tilting block and the equalizing plate work together. The former disperses the gas, and the tilting block ensures that the flow rate of the gas is consistent after rebounding according to the pressure characteristics. The equalizing plate evenly distributes the gas to make the output gas more uniform and stable. This is conducive to improving production and experimental accuracy, ensuring chemical production reaction efficiency and quality, reducing experimental errors, and can improve mixing efficiency and shorten mixing time. It is suitable for large-scale production or scenes with high speed requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a right side cross-sectional schematic diagram of the gas mixing and homogenizing device of the present invention;

[0027] Figure 2 It is an isometric stereoscopic schematic diagram of the gas mixing and homogenizing device of the present invention;

[0028] Figure 3 It is a front view of the gas mixing and equalizing device of the present invention;

[0029] Figure 4 It is a right side cross-sectional schematic diagram of a gas mixing pipe in the gas mixing and homogenizing device of the present invention;

[0030] Figure 5 It is a partial front view of the gas mixing pipe in the gas mixing and equalizing device of the present invention;

[0031] Figure 6 It is a top cross-sectional schematic diagram of the nozzle pulling module in the gas mixing and homogenizing device of the present invention;

[0032] Figure 7 It is a bottom-up cross-sectional schematic diagram of a nozzle pulling module in the gas mixing and homogenizing device of the present invention;

[0033] Figure 8 A schematic diagram of the flow direction of air in the gas mixing and homogenizing device of the present invention;

[0034] Fig. 9 It is a schematic diagram of the flow velocity of the air flow after the air mixing and homogenizing device of the present invention is modified in front of the nozzle module;

[0035] Fig.10 It is a schematic diagram of the flow rate of the airflow after it is ejected from the nozzle module in the air mixing and homogenizing device of the present invention;

[0036] Figure numerals: 1. mixing pipe, 2. equalizing air chamber, 3. outlet pipe, 4. connecting pipe, 5. equalizing air plate, 6. tilting block, 7. nozzle module, 8. first air chamber, 9. second air chamber, 10. Rafale nozzle, 11. fan, 12. separation pipe, 13. mixing chamber, 14. mixing chamber inlet. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Figure 1 It is a right side cross-sectional schematic diagram of the gas mixing and homogenizing device of the present invention;

[0040] Figure 2 It is an isometric stereoscopic schematic diagram of the gas mixing and homogenizing device of the present invention;

[0041] Figure 8 A schematic diagram of the flow direction of air in the gas mixing and homogenizing device of the present invention;

[0042] As a preferred embodiment of the present invention, the present invention provides a gas mixing and homogenizing device, which comprises:

[0043] Gas mixing sub-device and gas equalizing sub-device;

[0044] The gas mixing sub-device is used to mix two different gases;

[0045] The gas equalizing sub-device is used to make the gas mixed by the gas mixing sub-device uniform in speed and discharge it.

[0046] The gas mixing sub-device includes a first mixing module for mixing gases of different pressures, and a second mixing module for stirring and accelerating the flow of the gas after the primary mixing to form a secondary mixed gas;

[0047] Figure 3 It is a front view of the gas mixing and equalizing device of the present invention;

[0048] Figure 4 It is a right side cross-sectional schematic diagram of a gas mixing pipe in the gas mixing and homogenizing device of the present invention;

[0049] Figure 5 It is a partial front view of the gas mixing pipe in the gas mixing and equalizing device of the present invention;

[0050] The first mixing module includes a mixing pipe 1;

[0051] A dividing pipe 12 is concentrically arranged inside the mixing pipe 1, and the dividing pipe 12 is used to divide the inside of the mixing pipe 1 into a first air chamber 8 and a second air chamber 9;

[0052] The first gas chamber 8 is used for introducing the high-pressure first gas;

[0053] The second gas chamber 9 is used for introducing the low-pressure second gas;

[0054] The first air chamber 8 is arranged outside the second air chamber 9;

[0055] Rafale nozzles 10 are evenly arranged on the wall of the separation tube 12, and are used to mix the low-pressure gas in the second gas chamber 9 into the first gas chamber 8 to form a primary mixed gas;

[0056] The gas mixing sub-device also includes a gas mixing chamber, and a fan stirring module 11 is arranged inside the gas mixing chamber 13, which is used to stir and accelerate the flow of the primary mixed gas output by the first gas chamber 8 to form a secondary mixed gas, where the gas may circulate multiple times to improve the mixing efficiency; after mixing, it enters the connecting pipe 4 through high pressure;

[0057] A baffle is provided between the mixing pipe 1 and the mixing chamber 13, and a plurality of mixing chamber inlets 14 are provided on the baffle for;

[0058] A connecting pipe 4 is provided outside the gas mixing pipe 1 for inputting the secondary mixed gas into the gas homogenizing sub-device;

[0059] The second mixing module includes a homogenizing chamber 2,

[0060] A nozzle module 7 connected to the connecting pipe 4 is arranged inside the gas homogenizing chamber 2 for uniformly spraying the mixed gas;

[0061] Figure 6 It is a top cross-sectional schematic diagram of the nozzle pulling module in the gas mixing and homogenizing device of the present invention;

[0062] Figure 7 It is a bottom-up cross-sectional schematic diagram of a nozzle pulling module in the gas mixing and homogenizing device of the present invention;

[0063] The nozzle module 7 comprises a cross pipe rack, and a plurality of sub-pipe racks are arranged at equal intervals based on the geometric shape of the gas chamber 2 and the center of the cross pipe rack is taken as the center of a circle;

[0064] The lower surface of the nozzle is provided with a plurality of injection holes at equal intervals;

[0065] A tilt block 6 is provided at the bottom of the homogenizing chamber 2 and below the nozzle module, for ensuring that the flow velocity of the gas is consistent after rebounding according to the mixed pressure characteristics;

[0066] A gas-equalizing plate 5 is provided on the upper part of the gas-equalizing chamber 2 to ensure that the speed of the mixed gas is uniform;

[0067] At the top of the gas homogenizing chamber 2, an outlet pipe 3 is provided for the mixed gas to flow out at a uniform speed.

[0068] The air balancing plate 5 is evenly provided with a plurality of air vents;

[0069] As a preferred solution described in the present invention, the gases in the first gas chamber 8 and the second gas chamber 9 in the present invention are different gases.

[0070] Example 1

[0071] As a preferred solution of the present invention, the mixing pipe 1 includes a first air chamber 8, a low-pressure air chamber 9, a Rafale nozzle 10, a fan 11, a separation pipe 12, a mixing chamber 13 and a mixing chamber inlet 14. The front end of the mixing pipe 1 is connected to the connecting pipe 4, and the mixed gas in the mixing pipe 1 enters the homogenizing chamber 2 from the connecting pipe 4. The rear of the mixing pipe 1 is a gas pipeline.

[0072] See also Figure 4 As a preferred solution described in the present invention, the first air chamber 8 and the second air chamber 9 are located on the left side, wherein the first air chamber 8 is located in the outer circle; the second air chamber 9 is located in the inner circle, the front of the first air chamber 8 includes a mixing chamber inlet 14, and the front of the second air chamber 9 is a baffle.

[0073] See also Figure 4 and Figure 7 As a preferred embodiment of the present invention, the second gas chamber 9 includes a Rafale nozzle 10. The low-pressure gas entering the second gas chamber 9 is blocked by the baffle in front, and the gas then enters the first gas chamber 8 through the Rafale nozzle 10. At this time, the gas in the second gas chamber 9 is mixed with the first gas chamber 8, and enters the mixing chamber through the mixing chamber inlet 14 along with the high pressure of the first gas chamber 8.

[0074] See also Figure 4 and Figure 7 As a preferred solution of the present invention, after the gas in the mixing chamber 13 enters, it is stirred and accelerated by the fan 11 in the mixing chamber 13 to perform secondary mixing. Here, the gas may circulate multiple times to improve the mixing efficiency. After mixing, it enters the connecting pipe 4 through high pressure. Please refer to Figure 1 As a preferred solution described in the present invention, the purpose of the connecting pipe 4 is to connect the mixing pipe 1 and the homogenizing chamber 2, and the interior of the connecting pipe 4 does not contain any device.

[0075] As a preferred solution of the present invention, the air equalization chamber 2 includes: an air equalization plate 5, a tilting block 6, and a nozzle module 7. The rear of the air equalization chamber 2 is connected to the connecting pipe 4, and the top of the air equalization chamber 2 is connected to the air outlet pipe 3.

[0076] See also Figure 5As a preferred solution of the present invention, the nozzle module 7 is disc-shaped, comprising a plurality of arc air pipes with air holes distributed on the air pipes. The nozzle module 7 is connected to the connecting pipe 4 at the rear, and the nozzle module 7 discharges the gas from the connecting pipe 4 into the homogenizing chamber 2 through the air holes. The nozzle module 7 of this embodiment is an annular nozzle;

[0077] As a preferred solution described in the present invention, the tilting block 6 is located at the bottom end of the gas equalization chamber 2, and the tilting block 6 is coplanar with the long straight tube of the nozzle module 7. The function of the tilting block 6 is that since the pressure inside the nozzle module 7 is strong at the back (close to the connecting pipe 4 side) and weak at the front (away from the connecting pipe 4 side), the tilting block 6 is the lowest at the back, which prolongs the time for the gas to flow upward after impact and rebound; the tilting block 6 is the highest at the front, which accelerates the time for the gas to flow upward after impact and rebound. This makes the flow rate of the gas flowing out of the nozzle module 7 more uniform after rebounding at any point.

[0078] Fig. 9 It is a schematic diagram of the flow velocity of the air flow after the air mixing and homogenizing device of the present invention is modified in front of the nozzle module;

[0079] Fig.10 It is a schematic diagram of the flow rate of the airflow after it is ejected from the nozzle module in the air mixing and homogenizing device of the present invention;

[0080] See also Fig. 9 and Fig.10 The wind speed at the inlet is 25m / s. The velocity difference of the mixed gas after being ejected is large, and the velocity distribution in all directions is uneven. After adding the nozzle module 7 and ejecting, the velocity difference of the ejected gas is very low, and the velocity in all directions tends to be uniform, which is more convenient for processing or processing.

[0081] As a preferred solution of the present invention, the gas-distributing plate 5 is a thin-sheet gas-distributing plate, which contains a plurality of holes of the same specification but at different positions, through which the gas is uniformly discharged into the gas outlet pipe 3 .

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas mixing and homogenizing device, characterized in that: include: Gas mixing device: used to mix two different gases; Gas equalizing sub-device: It is used to make the gas mixed by the gas mixing sub-device uniform in speed and discharge it.

2. A gas mixing and homogenizing device according to claim 1, characterized in that: The gas mixing sub-device comprises a first mixing module for performing primary mixing on gases of different pressures, and a second mixing module for stirring and accelerating the flow of the primary mixed gas to form a secondary mixed gas.

3. A gas mixing and homogenizing device according to claim 2, characterized in that: The first mixing module includes a mixing pipe; A dividing tube is concentrically arranged inside the mixing tube, and the dividing tube is used to divide the inside of the mixing tube into a first air chamber and a second air chamber; The first gas chamber is used to introduce the high-pressure first gas; Second gas chamber: used for introducing low-pressure second gas; The first air chamber is arranged outside the second air chamber; Rafale nozzles are evenly arranged on the tube wall of the separation tube, and are used to mix the low-pressure gas in the second gas chamber into the first gas chamber to form a primary mixed gas.

4. A gas mixing and homogenizing device according to claim 2, characterized in that: The second mixing module includes a gas mixing chamber, and a fan stirring module is arranged inside the gas mixing chamber to stir and accelerate the flow of the primary mixed gas output from the first gas chamber to form a secondary mixed gas. The gas circulates multiple times here to improve the mixing efficiency.

5. The gas mixing and homogenizing device according to claim 1, characterized in that: A baffle is arranged between the gas mixing pipe and the gas mixing chamber, and a plurality of gas mixing chamber inlets are arranged on the baffle.

6. The gas mixing and homogenizing device according to claim 1, characterized in that: The gas equalization sub-device includes a gas equalization chamber, A nozzle module connected to the gas mixing sub-device is arranged inside the gas homogenizing chamber for uniformly spraying the mixed gas; The nozzle module comprises a cross pipe rack, and a plurality of sub-pipe racks are arranged at equal intervals based on the geometric shape of the uniform air chamber and the center of the cross pipe rack as a circle center; The lower surface of the nozzle is provided with a plurality of injection holes at equal intervals; A tilting block is provided at the bottom of the gas homogenizing chamber and below the nozzle module, for ensuring that the flow velocity of the gas is consistent after rebounding according to the mixed pressure characteristics; An air-equalizing plate is provided on the upper part of the air-equalizing chamber to ensure that the speed of the mixed gas is uniform; An air outlet pipe is provided on the top of the gas homogenizing chamber for the mixed gas to flow out at a uniform speed.

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