A granular multiphase fluid jet turbulent injector

Abstract

The present application provides a kind of granular multiphase flow jet turbulent injector, it is related to wind tunnel injector technical field, including multiphase flow distributor, it is equipped with first pipe connection structure;Injection box, injection box side is equipped with injection port;First conduit, one end is connected with multiphase flow distributor, the other end is connected in the opening direction of injection box on the side opposite to injection port with injection box;Two second conduits, second conduit one end is connected with multiphase flow distributor, the other end is connected with injection box perpendicular to the opening direction of injection box, the center axis of the one end of two second conduits and the center axis of the one end of first conduit and injection box are coincident, and intersect.The multiphase flow gas stream of two second conduits in the present application will form the state of mutual impingement, and the multiphase flow gas stream of first conduit is impacted to form jet turbulent, three jet streams impact each other and further break jet state, and form uniform multiphase flow distribution area in injection box.

Description

Technical Field

[0001] This invention relates to the field of wind tunnel jet technology, specifically a particle multiphase flow jet turbulence jet. Background Technology

[0002] In multiphase flow tests conducted in wind tunnels (such as ice crystal ejection tests and sand / dust particle ejection tests), nozzles are typically used to eject sand / dust particles and ice crystals. The size of these nozzles is limited. When using nozzles, the tests are primarily conducted on a model within the wind tunnel test section, where wind speeds are high. Therefore, under the influence of air drag, the particles are ejected in a jet stream from the nozzle, resulting in only localized particle accumulation. However, to meet the requirements of relevant testing standards, a larger particle concentration distribution area is needed. Therefore, a device capable of uniformly dispersing particles is required to increase the uniformity of the particle distribution area. Summary of the Invention

[0003] In order to solve the problem of particle aggregation and uneven distribution of multiphase flow wind tunnel test particles such as ice crystal particles and sand particles in the prior art, the present invention provides a particle multiphase flow jet turbulence injector.

[0004] To achieve the above objectives, the present invention employs the following technical solution:

[0005] A particulate multiphase flow jet turbulence injector, comprising:

[0006] A multiphase flow distributor, wherein the multiphase flow distributor is a closed shell and is provided with a first pipe connection structure communicating with its inner cavity;

[0007] A spray box, wherein a spray nozzle for spraying is provided on one side;

[0008] The first conduit has one end connected to the multiphase flow distributor and the other end connected to the side of the spray box opposite to the spray nozzle along the opening direction of the spray box;

[0009] Two second conduits are provided, one end of which is connected to the multiphase flow distributor, and the other end of which is connected to the spray box perpendicular to the opening direction of the spray box. The ends of the two second conduits connected to the spray box are arranged opposite each other, and the central axes of the ends of the two second conduits connected to the spray box coincide and intersect with the central axis of the end of the first conduit connected to the spray box.

[0010] Preferably, the multiphase flow distributor is a horizontally arranged cuboid shape, and the first pipe connection structure consists of three parts, which are respectively arranged at both ends of the length direction of the multiphase flow distributor and at the top of the multiphase flow distributor;

[0011] The first pipe connection structure includes a first connecting pipe communicating with the multiphase flow distributor, a first connecting flange connected to the first connecting pipe, and a first sealing flange detachably connected to the first connecting flange.

[0012] Preferably, the inner cavity of the spray box is rectangular.

[0013] Preferably, both the first conduit and the second conduit are connected to the injection box via flanges.

[0014] Preferably, the spray box is symmetrically provided with a second pipe connection structure, the second pipe connection structure including a second connecting pipe communicating with the spray box, a second connecting flange connected to the second connecting pipe, and a second sealing flange detachably connected to the second connecting flange;

[0015] The central axis of the second tube connection structure passes through the intersection of the central axis of the end of the two second conduits connected to the spray box and the central axis of the end of the first conduit connected to the spray box.

[0016] Preferably, the multiphase flow jet turbulent jet ejector further includes multiple jet extension sections, each jet extension section having a through channel, and each jet extension section being detachably connected to the jet nozzle, with any two jet extension sections being detachably connected.

[0017] The upper and lower sides of the spray extension section are symmetrically provided with third pipe connection structures. The third pipe connection structure includes a third connecting pipe communicating with the spray extension section, a third connecting flange connected to the third connecting pipe, and a third sealing flange detachably connected to the third connecting flange.

[0018] Preferably, the particulate multiphase flow jet turbulence injector further includes a honeycomb guide plate, which is installed at the injection port of the injection box or at the outlet of the injection extension section.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. The particle multiphase flow jet turbulence ejector of the present invention sets the connection direction and position of the first conduit and two second conduits on the injection box, so that the multiphase flow gas ejected from the two second conduits will form an opposing state, and at the same time, it will collide with the multiphase flow gas ejected from the first conduit to form jet turbulence. The three jets collide with each other and thus disrupt the jet state, forming a uniform multiphase flow distribution area in the injection box.

[0021] 2. The particle multiphase flow jet turbulence ejector of the present invention can increase or decrease the number of jet extension sections and external jet nozzles according to actual conditions, which is highly flexible and easy to install.

[0022] 3. Install honeycomb-shaped guide plates, which can be installed at the injection port of the injection box or at the outlet of the injection extension section as needed. This can straighten and rectify the airflow, and further form a uniform multiphase flow area. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the particle multiphase flow jet turbulent ejector of the present invention;

[0024] Figure 2 This is a schematic diagram of the honeycomb guide plate in this invention.

[0025] Figure 3 This is a schematic diagram of the spray box structure in this invention.

[0026] Figure 4 This is a schematic diagram of the structure of the injection extension section in this invention.

[0027] Explanation of reference numerals in the attached figures

[0028] 1-Multiphase flow distributor, 2-Injection box, 3-Injection port, 4-First conduit, 5-Second conduit, 6-First connecting pipe, 7-First connecting flange, 8-First sealing flange, 9-Second connecting pipe, 10-Second connecting flange, 11-Second sealing flange, 12-Injection extension section, 13-Third connecting pipe, 14-Third connecting flange, 15-Third sealing flange, 16-Honeycomb guide plate. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0030] The connections mentioned in this invention are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as bolted connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can be found to achieve this function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a bolted connection can be chosen for detachable connections.

[0031] The present invention will be further described in detail below with reference to the accompanying drawings. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0032] like Figures 1 to 4 As shown, a multiphase flow jet turbulence ejector for particles includes: a multiphase flow distributor 1, which is a closed shell and has a first pipe connection structure communicating with its inner cavity; a jet box 2, which has a jet port 3 for jetting on one side; a first conduit 4, one end of which is connected to the multiphase flow distributor 1 and the other end is connected to the side of the jet box 2 opposite to the jet port 3 along the opening direction of the jet box 2; and two second conduits 5, one end of which is connected to the multiphase flow distributor 1 and the other end of which is connected to the jet box 2 perpendicular to the opening direction of the jet box 2, and the ends of the two second conduits 5 connected to the jet box 2 are arranged opposite each other, the central axes of the ends of the two second conduits 5 connected to the jet box 2 coincide, and intersect with the central axis of the end of the first conduit 4 connected to the jet box 2.

[0033] Specifically, in this embodiment, the multiphase flow distributor 1 is designed as a horizontally oriented cuboid, but it is not limited to this and the multiphase flow distributor 1 can also have other shapes. There are three first pipe connection structures, respectively located at both ends of the length of the multiphase flow distributor 1 and at the top of the multiphase flow distributor 1. The first pipe connection structures are used to connect to an external multiphase flow (specifically a gas-solid two-phase flow) gas delivery pipeline, allowing the multiphase flow to enter the multiphase flow distributor 1 and then enter the injection box 2 through the first conduit 4 and the second conduit 5, respectively. The inner cavity of the injection box 2 is designed as a cuboid.

[0034] The first pipe connection structure includes a first connecting pipe 6 communicating with the multiphase flow distributor 1, a first connecting flange 7 connected to the first connecting pipe 6, and a first sealing flange 8 detachably connected to the first connecting flange 7. The first connecting flange 7 and the first sealing flange 8 can be detachably connected by bolts and nuts. When different injection conditions need to be selected, the first sealing flange 8 at different positions can be removed as needed. Generally, the first sealing flanges 8 at both ends along the length of the distributor are removed and connected to the external gas-solid two-phase flow gas delivery pipeline. The first connecting flange 7 at the top can be used to hoist and fix the entire distributor, but the first connecting flange 7 at the top needs to be sealed.

[0035] When the multiphase flow enters the injection box 2 through the first duct 4 and the two second ducts 5, the two second ducts 5 are positioned opposite each other at the ends connected to the injection box 2. The central axes of the two second ducts 5 connected to the injection box 2 coincide and intersect with the central axis of the first duct 4 connected to the injection box 2. The multiphase flow ejected from the two second ducts 5 will form a counter-current state, and at the same time, it will collide with the multiphase flow ejected from the first duct 4 to form jet turbulence. The three jets collide with each other and disrupt the jet state. After forming a uniform multiphase flow distribution area in the injection box 2, it is ejected.

[0036] In some alternative embodiments, both the first conduit 4 and the second conduit 5 are connected to the spray box 2 via flanges. The two second conduits 5 are respectively connected to the upper and lower sides of the spray box 2.

[0037] Furthermore, the spray box 2 is symmetrically provided with a second pipe connection structure, which can be arranged on the left and right sides of the spray box 2. The second pipe connection structure includes a second connecting pipe 9 communicating with the spray box 2, a second connecting flange 10 connected to the second connecting pipe 9, and a second sealing flange 11 detachably connected to the second connecting flange 10. The central axis of the second pipe connection structure passes through the intersection of the central axis of the end of the two second conduits 5 connected to the spray box 2 and the central axis of the end of the first conduit 4 connected to the spray box 2.

[0038] The second connecting flange 10 is used to connect to the external nozzle. The injection box 2 can be connected to the external nozzle according to the actual situation. Jet air or multiphase flow air is injected into the injection box 2. Through the second pipe connection structure, the two jets of the external nozzle can collide with the jets of the first guide 4 and the two second guides 5, forming a state of more jets colliding with each other, further improving the jet turbulence effect.

[0039] Furthermore, the multiphase flow jet turbulence ejector also includes multiple jet extension sections 12, each with a through-channel. Each jet extension section 12 is detachably connected to the jet nozzle 3, and any two jet extension sections 12 can be detachably connected. Symmetrically arranged on the upper and lower sides of each jet extension section 12 are third pipe connection structures. These third pipe connection structures include a third connecting pipe 13 communicating with the jet extension section 12, a third connecting flange 14 connected to the third connecting pipe 13, and a third sealing flange 15 detachably connected to the third connecting flange 14. Specifically, fixing holes are provided around the jet nozzle 3 end of the jet box 2, as well as the inlet and outlet ends of the jet extension sections 12. Bolts and nuts can be used to connect the jet box 2 to the jet extension sections 12, and to connect two jet extension sections 12. The number of jet extension sections 12 can be changed according to variations in the wind tunnel structure. The third pipe connection structures on the jet extension sections 12 can be used to connect to support structures such as support pipes, or to connect to external nozzles to input jet air and disrupt the jet flow.

[0040] Furthermore, the particulate multiphase flow jet turbulence ejector also includes a honeycomb guide plate 16, which is installed at the injection port 3 of the injection box 2 or at the outlet of the injection extension section 12. When the injection extension section 12 is not used, the honeycomb guide plate 16 is installed at the injection port 3 of the injection box 2; when the injection extension section 12 is used, the honeycomb guide plate 16 is installed at the outlet of the injection extension section 12. The honeycomb guide plate 16 can straighten and rectify the airflow, further forming a uniform multiphase flow region.

[0041] The above embodiments are merely illustrative examples of the present invention and do not limit its scope of protection. Those skilled in the art can make partial changes to them, as long as they do not exceed the spirit and essence of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A particle multiphase flow jet turbulent jet injector, characterized in that, include: Multiphase flow distributor (1), the multiphase flow distributor (1) is a closed shell and is provided with a first pipe connection structure communicating with its inner cavity; The spray box (2) has a spray nozzle (3) for spraying on one side; The first conduit (4) has one end connected to the multiphase flow distributor (1) and the other end connected to the side of the spray box (2) opposite to the spray port (3) along the opening direction of the spray box (2); Two second conduits (5), one end of which is connected to the multiphase flow distributor (1), and the other end is connected to the spray box (2) perpendicular to the opening direction of the spray box (2). The ends of the two second conduits (5) connected to the spray box (2) are arranged opposite to each other. The central axes of the ends of the two second conduits (5) connected to the spray box (2) coincide and intersect with the central axis of the end of the first conduit (4) connected to the spray box (2). The spray box (2) is symmetrically provided with a second pipe connection structure. The second pipe connection structure includes a second connecting pipe (9) communicating with the spray box (2), a second connecting flange (10) connected to the second connecting pipe (9), and a second sealing flange (11) detachably connected to the second connecting flange (10). The central axis of the second pipe connection structure passes through the intersection of the central axis of the end of the two second conduits (5) connected to the spray box (2) and the central axis of the end of the first conduit (4) connected to the spray box (2); The multiphase jet turbulent jet ejector also includes multiple jet extension sections (12), each jet extension section (12) having a through channel, each jet extension section (12) being detachably connected to the jet port (3), and any two jet extension sections (12) being detachably connected. The upper and lower sides of the spray extension section (12) are symmetrically provided with a third pipe connection structure. The third pipe connection structure includes a third connecting pipe (13) communicating with the spray extension section (12), a third connecting flange (14) connected with the third connecting pipe (13), and a third sealing flange (15) detachably connected with the third connecting flange (14). The multiphase flow jet turbulent jet injector also includes a honeycomb guide plate (16), which is installed at the injection port (3) of the injection box (2) or at the outlet of the injection extension section (12).

2. The particle multiphase flow jet turbulent ejector according to claim 1, characterized in that: The multiphase flow distributor (1) is a horizontally arranged cuboid shape. The first pipe connection structure consists of three parts, which are respectively located at both ends of the length direction of the multiphase flow distributor (1) and at the top of the multiphase flow distributor (1). The first pipe connection structure includes a first connecting pipe (6) communicating with the multiphase flow distributor (1), a first connecting flange (7) connected to the first connecting pipe (6), and a first sealing flange (8) detachably connected to the first connecting flange (7).

3. The particle multiphase flow jet turbulent jet ejector according to claim 1, characterized in that: The inner cavity of the spray box (2) is rectangular.

4. A particle multiphase flow jet turbulent jet injector according to claim 1, characterized in that: The first conduit (4) and the second conduit (5) are both connected to the injection box (2) via flanges.

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