A catalytic nozzle structure

Abstract

The utility model provides a catalytic nozzle structure, including a distribution plate and a nozzle assembly, wherein the distribution plate has a nozzle opening, the nozzle assembly is arranged in the nozzle opening, the nozzle assembly is in a tubular structure, a gap is provided between the outer wall of the tubular structure and the inner wall of the nozzle opening, both ends of the tubular structure are provided with outer flanges, and a ceramic fiber pad is provided between the outer flange and the distribution plate; the catalytic nozzle structure described in the utility model can reserve a certain buffer space for the radial deformation and expansion of the distribution plate, so that the distribution plate will not exert a force on the nozzle assembly when it deforms and expands radially, and at the same time, the axial deformation and expansion of the distribution plate can be effectively absorbed by the ceramic fiber pad, and the force exerted on the nozzle assembly by the distribution plate due to the axial deformation and expansion can be effectively reduced, and the deformation and fragmentation of the nozzle assembly can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to a catalytic nozzle structure. Background Art

[0002] In the chemical industry, such as in catalytic cracking systems, distributors are often used to spray or atomize fluid media. Existing distributors often rigidly connect ceramic tubes at the nozzle openings of the distribution plate to avoid wear of the nozzle structure caused by scouring of the fluid medium on the nozzle structure.

[0003] However, in actual production conditions, due to the high temperature environment and the pressure difference above and below the distribution plate, the distribution plate will often bulge and deform due to heat and pressure, which can easily cause the ceramic tube to deform and break. The broken ceramic tube will find it difficult to maintain good wear resistance, which will eventually lead to wear of the nozzle structure and cause the distributor nozzle to fail, making it impossible to perform normal spraying or atomization work. Utility Model Content

[0004] In view of this, the utility model aims to propose a catalytic nozzle structure to solve the problem in the prior art that the ceramic tube is deformed and broken due to the deformation of the distribution plate, and the distributor nozzle fails.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A catalytic nozzle structure comprises a distribution plate and a nozzle assembly, wherein the distribution plate has a nozzle opening, the nozzle assembly is arranged in the nozzle opening, the nozzle assembly is in a tubular structure, a gap is provided between the outer wall of the tubular structure and the inner wall of the nozzle opening, both ends of the tubular structure are provided with outer flanges, and a ceramic fiber pad is provided between the outer flanges and the distribution plate.

[0007] Furthermore, both ends of the tube structure pass through the nozzle opening, and both ends of the tube structure extend in a direction away from the nozzle opening and parallel to the distribution plate to form the outer flange.

[0008] Furthermore, the nozzle assembly includes a first nozzle member and a second nozzle member, the first nozzle member includes a first tube body, the second nozzle member includes a second tube body, and the first tube body and the second tube body are connected in a detachable manner.

[0009] Furthermore, the first tube body and the second tube body are threadedly connected.

[0010] Furthermore, the inner diameter of the first tube body is equal to the outer diameter of the second tube body, the inner wall of the first tube body is provided with an internal thread, the outer wall of the second tube body is provided with an external thread, and the internal thread of the first tube body is connected to the external thread of the second tube body.

[0011] Furthermore, the inner diameter of the nozzle opening is recorded as A, the outer diameter of the first tube body is recorded as B, and AB=4-8 mm.

[0012] Furthermore, a thread sealant is provided between the thread structure of the first tube body and the thread structure of the second tube body.

[0013] Furthermore, the end of the first tube body away from the second tube body has a first outer flange, the end of the second tube body away from the first tube body has a second outer flange, a ceramic fiber mat is arranged between the first outer flange and the distribution plate, and a ceramic fiber mat is arranged between the second outer flange and the distribution plate.

[0014] Furthermore, the thickness of the ceramic fiber mat is recorded as C, and C is 2 to 4 mm.

[0015] Compared with the prior art, the catalytic nozzle structure described in the utility model has the following advantages:

[0016] The catalytic nozzle structure described in the utility model can reserve a certain buffer space for the radial deformation and expansion of the distribution plate by arranging a nozzle assembly in the nozzle opening of the distribution plate and reserving a gap between the nozzle assembly and the nozzle opening, so that the distribution plate will not exert a force on the nozzle assembly when radially deforming and expanding, and can effectively prevent the occurrence of deformation and fragmentation of the nozzle assembly.

[0017] In addition, a ceramic fiber pad is arranged between the outer flanges at both ends of the nozzle assembly and the distribution plate. On the one hand, it can seal the gap to prevent fluid leakage from between the nozzle assembly and the nozzle port; on the other hand, the ceramic fiber pad has good deformation ability and can effectively absorb the axial deformation and expansion of the distribution plate. It can effectively reduce the force applied to the nozzle assembly due to the axial deformation and expansion of the distribution plate, thereby avoiding the deformation and fragmentation of the nozzle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0019] Figure 1 This is a structural schematic diagram (cross-sectional view) of a catalytic nozzle structure described in an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the distribution plate according to an embodiment of the utility model;

[0021] Figure 3 It is a schematic structural diagram of the nozzle assembly described in an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1. Distribution plate; 11. Nozzle port; 2. Nozzle assembly; 21. First nozzle member; 211. First tube body; 212. First outer flange; 22. Second nozzle member; 221. Second tube body; 222. Second outer flange; 3. Ceramic fiber pad; 4. Gap; 5. Thread sealant. DETAILED DESCRIPTION

[0024] The following will use the terms commonly used by those skilled in the art to convey the essence of their work to other technical personnel in the art to describe the utility model concepts of the present disclosure. However, these utility model concepts can be embodied in many different forms and should not be considered as limited to the embodiments described herein.

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Figure 1 The coordinates of are used as the reference.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] In the prior art, the distributor often rigidly connects the ceramic tube at the nozzle opening of the distribution plate to avoid wear of the nozzle structure caused by the fluid medium scouring the nozzle structure. However, in actual production conditions, due to the high temperature environment and the pressure difference between the upper and lower parts of the distribution plate, the distribution plate often bulges and deforms due to heat and pressure, which can easily cause the ceramic tube to deform and break. The broken ceramic tube will be difficult to maintain good wear resistance, which will cause the nozzle structure to wear over time, causing the distributor nozzle to fail and unable to perform normal spraying or atomization work.

[0028] In order to solve the problem in the prior art that the ceramic tube is deformed and broken due to the deformation of the distribution plate, and the distributor nozzle fails, this embodiment proposes a catalytic nozzle structure, as shown in the attached Figure 1-3 As shown, the catalytic nozzle structure includes a distribution plate 1 and a nozzle assembly 2. The distribution plate 1 has a nozzle port 11. The nozzle assembly 2 is arranged in the nozzle port 11. The nozzle assembly 2 is a tubular structure. There is a gap 4 between the outer wall of the tubular structure and the inner wall of the nozzle port 11. Outer flanges are arranged at both ends of the tubular structure, and a ceramic fiber pad 3 is arranged between the outer flange and the distribution plate 1.

[0029] Among them, as attached Figure 1 As shown, both ends of the tube structure penetrate the nozzle opening 11, and both ends of the tube structure extend in a direction away from the nozzle opening 11 and parallel to the distribution plate 1 to form the outer flange. The nozzle assembly 2 is also a ceramic nozzle to prevent the fluid medium from scouring the nozzle structure and causing wear of the nozzle structure.

[0030] Therefore, the present application can reserve a certain buffer space for the radial deformation and expansion of the distribution plate 1 by arranging the nozzle assembly 2 in the nozzle opening 11 of the distribution plate 1 and reserving a gap 4 between the nozzle assembly 2 and the nozzle opening 11, so that the distribution plate 1 will not exert a force on the nozzle assembly 2 during the radial deformation and expansion, and can effectively prevent the occurrence of deformation and fragmentation of the nozzle assembly 2; in addition, a ceramic fiber pad 3 is arranged between the outer flanges at both ends of the nozzle assembly 2 and the distribution plate 1, which can, on the one hand, seal the gap 4 to prevent fluid from leaking from between the nozzle assembly 2 and the nozzle opening 11, and on the other hand, the ceramic fiber pad 3 has good deformation ability, can effectively absorb the axial deformation and expansion of the distribution plate 1, can effectively reduce the force exerted on the nozzle assembly 2 by the distribution plate 1 due to the axial deformation and expansion, and avoid the occurrence of deformation and fragmentation of the nozzle assembly 2, which is beneficial to ensure the normal operation of the nozzle structure.

[0031] Since the distribution plate 1 is often provided with a plurality of nozzle openings 11, the present application provides a nozzle assembly 2 at each nozzle opening 11. To facilitate the actual production and assembly operations, the nozzle assembly 2 is a detachable structure. Specifically, the nozzle assembly 2 includes a first nozzle member 21 and a second nozzle member 22. The first nozzle member 21 includes a first tube body 211, and the second nozzle member 22 includes a second tube body 221. The first tube body 211 and the second tube body 221 are connected in a detachable manner. The first tube body 211 has a first outer flange 212 at one end away from the second tube body 221, and the second tube body 221 has a second outer flange 222 at one end away from the first tube body 211. A ceramic fiber mat 3 is arranged between the first outer flange 212 and the distribution plate 1, and a ceramic fiber mat 3 is arranged between the second outer flange 222 and the distribution plate 1.

[0032] Therefore, the present application improves the nozzle assembly 2 into two detachable nozzle parts, which not only facilitates the installation operation in actual production and assembly, but also allows for convenient and quick replacement even if a nozzle assembly 2 is damaged. Among them, the first tube body 211 and the second tube body 221 can be connected in a variety of detachable ways such as snap connection and threaded connection.

[0033] Preferably, the first tube body 211 and the second tube body 221 are connected by threads. Figure 3 For example, the inner diameter of the first tube body 211 is equal to the outer diameter of the second tube body 221, the inner wall of the first tube body 211 is provided with an internal thread, and the outer wall of the second tube body 221 is provided with an external thread, so that the first tube body 211 is sleeved outside the second tube body 221, and the two are connected by threads.

[0034] On this basis, in order to ensure that a sufficient gap 4 can be reserved between the nozzle assembly 2 and the nozzle opening 11, the inner diameter of the nozzle opening 11 is recorded as A, and the outer diameter of the first tube body 211 is recorded as B, AB = 4-8 mm. Thus, sufficient space can be reserved between the nozzle assembly 2 and the nozzle opening 11, so that the distribution plate 1 will not contact the nozzle assembly 2 when it is radially deformed and expanded.

[0035] Of course, the present application can also interchange the second tube body 221 and the first tube body 211, so that the second tube body 221 is sleeved outside the first tube body 211. Specifically, the inner diameter of the second tube body 221 is equal to the outer diameter of the first tube body 211, the inner wall of the second tube body 221 is provided with an internal thread, and the outer wall of the first tube body 211 is provided with an external thread. Accordingly, the outer diameter of the second tube body 221 is recorded as B, and AB=4-8 mm.

[0036] A thread sealant 5 is provided between the thread structure of the first tube body 211 and the thread structure of the second tube body 221, which ensures the sealing of the threaded connection between the first tube body 211 and the second tube body 221 on the one hand, and is also conducive to improving the reliability of the connection between the first tube body 211 and the second tube body 221, and avoiding unnecessary looseness between the two under fluid impact. For the provision of the thread sealant 5, the thread sealant can be evenly applied to the thread structure of the first tube body 211 and the thread structure of the second tube body 221, and then the first tube body 211 and the second tube body 221 are assembled together.

[0037] In addition, if Figure 1 As shown, the thickness of the ceramic fiber mat 3 is recorded as C, and C can also be approximately regarded as the distance between the outer flange and the distribution plate 1. C is 2 to 4 mm. On the one hand, it ensures that the ceramic fiber mat 3 has a certain thickness to provide good deformation absorption capacity. On the other hand, it also makes the distance between the outer flange and the distribution plate 1 consistent with the width of the single-sided gap 4 (that is, half of the AB difference), which is convenient for the production and assembly of related components and avoids the occurrence of spatial interference.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A catalytic nozzle structure, characterized in that: The catalytic nozzle structure comprises a distribution plate (1) and a nozzle assembly (2); the distribution plate (1) has a nozzle opening (11); the nozzle assembly (2) is arranged in the nozzle opening (11); the nozzle assembly (2) is in the form of a tubular structure; a gap (4) is provided between the outer wall of the tubular structure and the inner wall of the nozzle opening (11); both ends of the tubular structure are provided with outer flanges; a ceramic fiber mat (3) is provided between the outer flanges and the distribution plate (1).

2. A catalytic nozzle structure according to claim 1, characterized in that: Both ends of the tube structure penetrate the nozzle opening (11), and both ends of the tube structure extend in a direction away from the nozzle opening (11) and parallel to the distribution plate (1), forming an outer flange.

3. A catalytic nozzle structure according to claim 1, characterized in that: The nozzle assembly (2) comprises a first nozzle member (21) and a second nozzle member (22); the first nozzle member (21) comprises a first tube body (211); the second nozzle member (22) comprises a second tube body (221); the first tube body (211) and the second tube body (221) are connected in a detachable manner.

4. A catalytic nozzle structure according to claim 3, characterized in that: The first tube body (211) and the second tube body (221) are threadedly connected.

5. A catalytic nozzle structure according to claim 4, characterized in that: The inner diameter of the first tube body (211) is equal to the outer diameter of the second tube body (221); the inner wall of the first tube body (211) is provided with an internal thread; the outer wall of the second tube body (221) is provided with an external thread; the internal thread of the first tube body (211) is connected to the external thread of the second tube body (221).

6. A catalytic nozzle structure according to claim 5, characterized in that: The inner diameter of the nozzle opening (11) is denoted as A, and the outer diameter of the first tube body (211) is denoted as B, and AB=4-8 mm.

7. A catalytic nozzle structure according to claim 4, characterized in that: A thread sealant (5) is provided between the thread structure of the first tube body (211) and the thread structure of the second tube body (221).

8. A catalytic nozzle structure according to claim 3, characterized in that: The end of the first tube body (211) away from the second tube body (221) has a first outer flange (212), the end of the second tube body (221) away from the first tube body (211) has a second outer flange (222), a ceramic fiber mat (3) is arranged between the first outer flange (212) and the distribution plate (1), and a ceramic fiber mat (3) is arranged between the second outer flange (222) and the distribution plate (1).

9. A catalytic nozzle structure according to claim 1, characterized in that: The thickness of the ceramic fiber mat (3) is denoted as C, and C is 2 to 4 mm.

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