Annular space flow guide supporting piece

Abstract

The invention discloses an annular space flow guide supporting piece which is arranged in an annular space flow channel formed by a coaxial gap of an inner shell and an outer shell and comprises a flow guide body, one end of the flow guide body is arranged on the outer periphery of the inner shell or the inner periphery of the outer shell, and the other end of the flow guide body is close to the inner periphery of the outer shell or the outer periphery of the inner shell. The annular space flow guide supporting piece is supported in the annular space flow channel through the flow guide body, the flow guide body is only in contact with one of the inner shell and / or the outer shell in a vibration-free state, the flow direction of a medium can be guided, the medium can be redistributed and mixed, and the flow guide body can be supported between the outer shell and the inner shell when the annular space flow guide supporting piece is vibrated or pressed. Displacement deformation caused by excessive approaching of the inner shell and the outer shell is avoided, and rigid support is provided.

Description

Technical Field

[0001] The present invention belongs to the technical field of equipment using multiphase flow medium as an operating medium, and more specifically, relates to an annular gap flow guide support. Background Art

[0002] Equipment handling multiphase flow media (media containing at least two of the following phases: gas, liquid, and particulates) is widely used in the oil refining and chemical, coal chemical, and nuclear industries. Due to process flow or structural design requirements, annular flow channels are often installed to achieve process properties such as mass transfer, heat transfer, and redistribution of the operating medium. To ensure the structural stability and process properties of the annular flow channels, internal components are required.

[0003] In the related art, the design of internal components cannot solve problems such as the need for additional support due to equipment vibration or axial compressive deformation of the shell, the need for redistribution due to uneven multiphase flow medium, or the need for re-mixing due to deposition of heavy component medium in the multiphase flow medium. The design of internal components cannot fully take into account the diversion function and support function, and the functional design of internal components is insufficient, thereby destroying or reducing the process properties of the annular gap flow channel; in addition, the arrangement of internal components in the related art is too concentrated, affecting the welding (bonding) quality. Summary of the Invention

[0004] The purpose of the present invention is to provide an annular gap flow guide support member to address the deficiencies in the prior art and solve the problem that the design of existing internal components cannot fully take into account the flow guide function and support function, causing the equipment to deform due to vibration or axial compression of the shell.

[0005] In order to achieve the above-mentioned object, the present invention provides an annular gap flow guide support member, which is arranged in the annular gap flow channel formed by the coaxial gap between the inner shell and the outer shell, comprising:

[0006] A body guide, one end of which is arranged on the outer periphery of the inner shell and / or the inner periphery of the outer shell, and the other end of which is close to the inner periphery of the outer shell or the outer periphery of the inner shell.

[0007] Optionally, the flow guide is a spiral structure with the central axis of the inner shell as the axis, and distribution holes are provided on the flow guide.

[0008] Optionally, at least two of the flow guides are distributed circumferentially along the central axis of the inner shell.

[0009] Optionally, the two flow guides are respectively a first flow guide and a second flow guide, the first flow guide is connected to the outer periphery of the inner shell, and the second flow guide is connected to the inner periphery of the outer shell.

[0010] Optionally, the guide body is provided with multiple sections along the axis of the inner shell, and the helical lines of the guide bodies in the same section are the same.

[0011] Optionally, the projection of the guide body in the X direction is fan-shaped, the projection in the Y direction is willow-leaf S-shaped, and the projection in the Z direction is rectangular, including:

[0012] A front surface and a rear surface in the X direction, wherein the front surface faces the flow direction of the medium;

[0013] Two spiral side surfaces in the Y direction, the spiral side surfaces guiding the flow direction of the medium, and the distribution holes are arranged on the spiral side surfaces;

[0014] A Z-direction connecting surface and a free surface, wherein the connecting surface is used to connect with the outer periphery of the inner shell and / or the inner periphery of the outer shell.

[0015] Optionally, the free surface is an outwardly convex arc surface or a rounded sharp-angle surface.

[0016] Optionally, the helix angle of the guide body is 30-50 degrees.

[0017] Optionally, the distribution holes are round holes or waist holes.

[0018] Optionally, a gap of 0.5-5 mm is provided between the free surface and the inner shell or the outer shell.

[0019] The present invention provides an annular gap flow guide support, which has the following beneficial effects:

[0020] 1. The annular gap flow guide support is supported in the annular gap flow channel by the guide body. In the non-vibration state, the guide body only contacts one of the inner shell and / or the outer shell, which can guide the flow direction of the medium and redistribute and mix the medium. When vibrating or under pressure, the guide body can be supported between the outer shell and the inner shell to avoid displacement deformation caused by excessive proximity between the inner shell and the outer shell, thereby providing rigid support.

[0021] 2. The annular gap guide support provides 360-degree support within the annular gap flow channel through a spiral design, adapting to radial deformation and vibration in different directions and angles. This solves the problem of radial deformation and extrusion of the annular gap flow channel caused by axial pressure on the inner shell, ensuring the structural stability of the annular gap flow channel. At the same time, the distribution holes enhance the mixing effect. The spiral stirring and redistribution prevents the deposition of heavy components in the multiphase flow medium, ensuring the process properties of the annular gap flow channel.

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0024] Figure 1A schematic structural diagram of an annular gap flow guide support according to embodiment 1 of the present invention is shown.

[0025] Figure 2 Shown Figure 1 Cross-sectional view of AA;

[0026] Figure 3 shows a cross section of the free surface of the body guide in Example 1;

[0027] Figure 4 Shown Figure 2 Cross-sectional view of the middle BB;

[0028] Figure 5 The schematic diagram of the structure of the distribution holes in Example 1 is shown;

[0029] Figure 6 A schematic structural diagram of an annular gap flow guide support according to embodiment 2 of the present invention is shown.

[0030] Figure 7 Shown Figure 6 Cross-sectional view of AA;

[0031] Figure 8 shows a cross section of the free surface of the body guide in Example 2;

[0032] Figure 9 Shown Figure 7 Cross-sectional view of the middle BB;

[0033] Figure 10 A schematic structural diagram of the distribution holes in Example 2 is shown.

[0034] Description of reference numerals:

[0035] 1. Diverter; 2. Distribution holes; 3. Inner shell; 4. Annular flow channel; 5. Outer shell; 6. Diverter group; 11. Front surface; 12. Rear surface; 13. Spiral side; 14. Connecting surface; 15. Free surface; 111. Arc surface; 112. Sharp angle surface; 151. Arc surface; 152. Rounded sharp angle surface; 21. Round hole; 22. Waist hole. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Instead, these embodiments are provided to make the present invention more thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0037] like Figure 1-10As shown, an annular gap flow guide support is arranged in the annular gap flow channel 4 formed by the coaxial gap between the inner shell 3 and the outer shell 5, comprising:

[0038] The guide body 1 has one end disposed on the outer periphery of the inner shell 3 and / or the inner periphery of the outer shell 5 , and the other end of the guide body 1 is close to the inner periphery of the outer shell 5 or the outer periphery of the inner shell 3 .

[0039] Specifically, the inner shell 3 and the outer shell 5 are coaxial cylindrical and supported in the annular flow channel 4 by the guide body 1. In the non-vibration state, the guide body 1 only contacts one of the inner shell 3 and / or the outer shell 5, and can guide the flow direction of the medium and redistribute and mix the medium. When vibrating or under pressure, the guide body 1 can be supported between the outer shell 5 and the inner shell 3 to prevent the inner shell 3 and the outer shell 5 from being too close to each other and causing displacement deformation, thereby providing rigid support.

[0040] Furthermore, the guide bodies 1 are distributed along the circumference of the center line of the inner shell 3 , and the guide bodies 1 connected to the inner shell 3 and the guide bodies 1 connected to the outer shell 5 are arranged alternately and arranged on a straight line along the diameter of the radial section of the inner shell 3 .

[0041] In this embodiment, the flow guide 1 is a spiral structure with the central axis of the inner shell 3 as the axis, and distribution holes 2 are provided on the flow guide 1.

[0042] Specifically, the spiral guide body 1 guides the medium to rotate and mix, while the distribution holes 2 facilitate reducing the pressure drop and increasing the mixing effect, thereby achieving the mixing and redistribution of the components, which can effectively solve the problem of uneven distribution of the medium and avoid the deposition of the heavy component medium in the multiphase flow medium.

[0043] In this embodiment, at least two flow guides 1 are distributed along the circumference of the central axis of the inner shell 3 .

[0044] Specifically, multiple guide bodies 1 are distributed circumferentially to adapt to vibration impacts in all directions, so that 360-degree support can be achieved within each axial span, and each guide body 1 cooperates with each other and serves as a backup for each other, avoiding the situation where only one guide body 1 cannot take into account the vibration fluctuations of each axial section when the axial distance is long.

[0045] In this embodiment, the two flow guides 1 are respectively a first flow guide and a second flow guide. The first flow guide is connected to the outer periphery of the inner shell 3 , and the second flow guide is connected to the inner periphery of the outer shell 5 .

[0046] Specifically, the first guide body and the second guide body are respectively arranged on the inner shell 3 and the outer shell 5, so as to reasonably distribute the load of the guide body 1 and avoid the load of the guide body 1 and the guide impact being concentrated on the inner shell 3 or the outer shell 5 to aggravate the vibration.

[0047] Furthermore, the first flow guide and the second flow guide are respectively arranged on the inner shell 3 and the outer shell 5. If the flow rate of the medium is stable, the two can vibrate and deform synchronously to avoid collision.

[0048] In this embodiment, the guide body 1 is provided with multiple sections along the axis of the inner shell 3 , and the helical lines of the guide body 1 in the same section are the same.

[0049] Specifically, the guide body 1 is arranged in sections to avoid welding (bonding) stress concentration, reduce manufacturing deformation, ensure stable connection, reduce the unsupported span during use, avoid the influence of thermal expansion and contraction deformation of the guide body 1, and ensure the structural stability of the annular gap flow channel 4.

[0050] Furthermore, two or more guide bodies 1 positioned at the same axial position form a guide group 6, and the same axial position is based on the front surface 11 and the rear surface 12 being at the same axial position. The spiral directions of each section of the guide group 6 can be the same or opposite, and the spiral angle can also be adapted to change.

[0051] In this embodiment, the projection of the guide body 1 in the X direction is fan-shaped, the projection in the Y direction is willow-leaf S-shaped, and the projection in the Z direction is rectangular, including:

[0052] A front surface 11 and a rear surface 12 in the X direction, wherein the front surface 11 faces the flow direction of the medium;

[0053] Two spiral side surfaces 13 in the Y direction, the spiral side surfaces 13 guide the flow direction of the medium, and the distribution holes 2 are arranged on the spiral side surfaces 13;

[0054] A connecting surface 14 in the Z direction and a free surface 15 , wherein the connecting surface 14 is used to connect to the outer periphery of the inner shell 3 and / or the inner periphery of the outer shell 5 .

[0055] Specifically, the front surface 11 faces the medium and is impacted, the spiral side surface 13 guides the medium to rotate and mix, the connecting surface 14 is used to fix the guide body 1, and the free surface 15 is used to contact and support the inner shell 3 or the outer shell 5 during vibration, and is suspended in the air when there is no vibration.

[0056] In this embodiment, the free surface 15 is an outwardly convex arc surface 151 or a rounded sharp-angle surface 152 .

[0057] Specifically, considering the resistance of the free surface 15 to the medium and the pressure when in contact with the inner shell 3 or the outer shell 5, the tip of the free surface 15 is designed to be a smooth structure to avoid pressure cutting and damaging the inner shell 3 or the outer shell 5 on the pressure surface.

[0058] Furthermore, the rounded tip surface 152 is formed by two intersecting oblique planes at the transition of the tip rounded corner.

[0059] In this embodiment, the helix angle of the guide body 1 is 30-50 degrees.

[0060] Specifically, the helix angle of the flow guide 1 (the acute angle between the tangent line of the helix and the plane perpendicular to the helix axis) can be 30-50 degrees, preferably 35-45 degrees. For example, an angle of 35 degrees or 40 degrees can be selected based on the flow characteristics of the actual operating medium. By matching a reasonable helix angle, a smaller flow resistance can be achieved.

[0061] In this embodiment, the distribution holes 2 are circular holes 21 or waist holes 22 .

[0062] Specifically, the round hole 21 is suitable for multiphase flow media containing smaller solid particles and the situation where the medium mixing requirements are high, and the waist hole 22 is suitable for multiphase flow media containing larger solid particles and the situation where the medium mixing requirements are low.

[0063] In this embodiment, a gap of 0.5-5 mm is provided between the free surface 15 and the inner shell 3 or the outer shell 5 .

[0064] Specifically, the gap distance is 0.5 mm to 5 mm, preferably 0.5 mm to 2 mm, which can ensure a certain expansion space and facilitate installation and manufacturing.

[0065] Example 1

[0066] like Figure 1-5 As shown, three first guide bodies are circumferentially distributed on the inner shell 3, and three second guide bodies are circumferentially distributed on the outer shell 5, and are staggered with the three first guide bodies;

[0067] The first guiding body and the second guiding body are respectively set continuously and uninterruptedly;

[0068] The free surface 15 of the first guiding body is an outwardly convex arc surface 151;

[0069] The front surface 11 and the rear surface 12 are convex arc surfaces 111;

[0070] The distribution holes 2 are circular holes 21 .

[0071] Example 2

[0072] like Figure 6-10 As shown, four first guide bodies are circumferentially distributed on the inner shell 3, and four second guide bodies are circumferentially distributed on the outer shell 5, and are staggered with the four first guide bodies;

[0073] The first guiding body and the second guiding body are respectively arranged in multiple groups at intervals;

[0074] The free surface 15 of the first flow guide is an outwardly convex rounded sharp-angled surface 152;

[0075] The front surface 11 and the rear surface 12 are convex pointed surfaces 112;

[0076] The distribution holes 2 are waist holes 22 .

[0077] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An annular gap guide support member, which is arranged in the annular gap flow channel formed by the gap between the inner shell and the outer shell, characterized in that: include: A body guide, one end of which is arranged on the outer periphery of the inner shell and / or the inner periphery of the outer shell, and the other end of which is close to the inner periphery of the outer shell or the outer periphery of the inner shell.

2. The annular gap guide support according to claim 1, characterized in that: The guide body is a spiral structure with the central axis of the inner shell as the axis, and distribution holes are provided on the guide body.

3. The annular gap guide support according to claim 1, characterized in that: There are at least two guide bodies distributed along the circumference of the central axis of the inner shell.

4. The annular gap guide support according to claim 3, characterized in that: The two guiding bodies are respectively a first guiding body and a second guiding body, the first guiding body is connected to the outer periphery of the inner shell, and the second guiding body is connected to the inner periphery of the outer shell.

5. The annular gap guide support according to claim 2, characterized in that: The guide body is provided with multiple sections along the axis of the inner shell, and the helical lines of the guide bodies in the same section are the same.

6. The annular gap guide support according to claim 2, characterized in that: The projection of the guide body in the X direction is fan-shaped, the projection in the Y direction is willow leaf S-shaped, and the projection in the Z direction is rectangular, including: A front surface and a rear surface in the X direction, wherein the front surface faces the flow direction of the medium; Two spiral side surfaces in the Y direction, the spiral side surfaces guiding the flow direction of the medium, and the distribution holes are arranged on the spiral side surfaces; A Z-direction connecting surface and a free surface, wherein the connecting surface is used to connect with the outer periphery of the inner shell and / or the inner periphery of the outer shell.

7. The annular gap guide support according to claim 6, characterized in that: The free surface is an outwardly convex arc surface or a rounded sharp-angle surface.

8. The annular gap guide support according to claim 2, characterized in that: The helix angle of the guide body is 30-50 degrees.

9. The annular gap guide support according to claim 2, characterized in that: The distribution holes are round holes or waist holes.

10. The annular gap guide support according to claim 6, characterized in that: A gap of 0.5-5 mm is provided between the free surface and the inner shell or the outer shell.

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