Reactor supporting grid assembly

Abstract

The utility model relates to the technical field of reactor internals, and discloses a reactor support grating assembly, which comprises a plurality of mutually connected gratings, a screen layer is arranged on each grating, the screen layer comprises a first layer of screen, the first layer of screen is provided with at least one layer of a plurality of segmented screens, and the edges of the segmented screens are lapped at the grating joints. The plurality of sectional screens are fixedly connected, the screen layer is detachably connected to the grid through a fixing piece, a supporting assembly used for supporting and fixing the grid is arranged below the grid, a pressing ring is arranged above the grid and connected to the edge of the screen layer in a pressing mode, and the grid penetrates through the pressing ring through the fixing piece to be detachably connected to a supporting ring preset on the inner wall of the reactor. The screen layers are arranged on the grille, the joints of the screen layers are in lap joint with one another and cover the joints of the grille, and the problem of catalyst leakage is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of reactor internals, and in particular to a reactor support grid assembly. Background Art

[0002] The support grid device is one of the most important core components in the petrochemical reaction vessel. The support grid is an integrated component or multiple components, which is easy to assemble. In the catalytic reaction process, it is used to support the catalyst, and the fluid passes through the support grid and contacts the catalyst for reaction.

[0003] At present, a Johnson net is set on the top of the existing support grid device. Due to the large inner diameter of the reactor, the Johnson net is set in blocks. When the support grid assembly is assembled, there are gaps at the joints and the flatness is difficult to ensure, resulting in leakage of the catalyst on the support grid. Utility Model Content

[0004] In order to improve the problem of catalyst leakage in a support grid, the present application provides a reactor support grid assembly.

[0005] The present application provides a reactor support grid assembly, which adopts the following technical solution:

[0006] A reactor support grid assembly comprises a plurality of grids connected to each other, a screen layer is arranged on the grid, the screen layer comprises a first layer of screens, the first layer of screens is provided with at least one layer of a plurality of segmented screens, the edges of the segmented screens are overlapped at the grid connection, the plurality of segmented screens are fixedly connected, the screen layer is detachably connected to the grid via a fixing member, a support assembly for supporting and fixing the grid is arranged under the grid, a pressure ring is arranged above the grid, the pressure ring is press-connected to the edge of the screen layer, and the grid is detachably connected to a support ring preset on the inner wall of the reactor through a fixing member passing through the pressure ring.

[0007] By adopting the above technical solution, the support grille assembly is formed into an integral structure by splicing a plurality of grilles, and the support grille assembly is arranged in blocks, which is convenient for the production and manufacture of the support grille assembly and is also convenient for installation; a screen layer is arranged on the grille to support the catalyst, and the connection of the screen layer is overlapped at the connection of the grille, and the screen layer completely covers the gap at the connection of the grille to prevent leakage of the catalyst; the grille and the screen layer are fixed by the support assembly to form an integral structure, so that the structure of the support grille assembly is more stable.

[0008] Optionally, the grille includes a surrounding plate, in which a first rib and a second rib that are fixedly connected are arranged, and a plurality of connecting holes are opened on the surrounding plate, and the abutting grilles are fixedly connected by fixing members passing through the connecting holes.

[0009] By adopting the above technical solution, the abutting grilles are connected into an integral structure through the connecting holes opened on the grille enclosure; the first rib plate and the second rib plate are arranged on the inner side of the grille enclosure to increase the structural strength of the grille, make the grille structure more stable, and increase the service life of the grille.

[0010] Optionally, a first connecting plate is provided at one end of the enclosure close to the screen layer, and a second connecting plate is provided on the side of the enclosure away from the screen layer. Through holes are correspondingly provided on the first connecting plate and the second connecting plate, and the first connecting plate and the second connecting plate are both connected to the inner side of the enclosure; the grille passes through the through holes through fixing parts and is respectively connected to the screen layer and the supporting assembly, the first connecting plate abuts against the screen layer, and the second connecting plate abuts against the supporting assembly.

[0011] By adopting the above technical solution, a first connecting plate and a second connecting plate are provided, the contact area between the grille and the screen layer and the supporting assembly is increased, so that the grille is fixed more firmly.

[0012] Optionally, the screen layer further includes a second screen layer, the second screen layer includes a plurality of block screens, the block screens are fixedly connected to the grid, and the first screen layer is crimped onto the second screen layer.

[0013] By adopting the above technical solution, the second layer of screen is composed of multiple block screens, the block screens are connected to the grille, the first layer of screen is crimped onto the second layer of screen, the second layer of screen plays a supporting role, and increases the heavy-load capacity of the screen layer; the second layer of screen is arranged in blocks, which facilitates the installation of the second layer of screen.

[0014] Optionally, the aperture size of the first layer of screen is smaller than the aperture size of the second layer of screen.

[0015] By adopting the above technical solution, the first layer of screen is used to support the catalyst, and a small size is selected to prevent the catalyst from leaking. The second layer of screen is used to support the first layer of screen to increase the structural strength of the screen.

[0016] Optionally, a flange overlapped with the inner wall of the reactor is provided at the edge of the second layer of screen, and the flange faces away from the grid.

[0017] By adopting the above technical solution, the edge of the third layer of screen is provided with a flange to fit with the inner wall of the reactor to ensure the sealing of the supporting grid; at the same time, the stability of the installation of the screen layer is increased to prevent the screen layer from sliding.

[0018] Optionally, the pressure ring includes a plurality of arc-shaped pressure plates, and the arc-shaped pressure plates are pressed onto the upper side of the edge of the screen layer.

[0019] By adopting the above technical solution, the pressure ring is composed of a plurality of arc-shaped pressure plates, which is convenient for production and manufacturing, and also convenient for installation.

[0020] Optionally, a filler for sealing is provided between the grid and the inner wall of the reactor.

[0021] By adopting the above technical solution and arranging the filler, the sealing between the grid and the inner wall of the reactor is ensured, thereby preventing the catalyst from leaking.

[0022] Optionally, the filler is arranged around a side of the grid close to the inner wall of the tower body, and the filler abuts against the inner wall of the reactor.

[0023] By adopting the above technical solution, the filler is wound around the grid, and the filler abuts against the grid better, thereby preventing the filler from sliding off.

[0024] Optionally, the support assembly includes a main support beam and an auxiliary support beam, the main support beam is located below the connection between adjacent grilles parallel to the second rib plate, the auxiliary support beam is located between adjacent main support beams, and a connecting piece is provided between the main support beam and the auxiliary support beam; the main support beam and the auxiliary support beam are detachably connected to the bottom of the grille by fixing pieces.

[0025] By adopting the above technical solution, the main support beam and the auxiliary support beam are used to support and fix the grille, so that the grille forms an integral structure, the stability of the supporting grille component structure is increased, and the grille has a higher impact resistance.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: the supporting grille assembly is formed by splicing multiple grilles, which is convenient for the production and installation of the grilles; the screen layer connections are overlapped at the grille connections, and the screen layer completely covers the gaps at the grille connections to prevent differential leakage of the catalyst; the screen layer is arranged with multiple layers of screens of different sizes to increase the structural strength of the support screen and increase the impact resistance of the screen layer; a filler is arranged between the grille and the inner wall of the reactor to prevent leakage of the catalyst. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the reactor support grid assembly of the present application.

[0028] Figure 2 It is a structural schematic diagram of the reactor support grid assembly of the present application installed on the support ring.

[0029] Figure 3 It is a structural schematic diagram of the grid of this application.

[0030] Figure 4 yes Figure 3 Schematic diagram of the structure of the DD section.

[0031] Figure 5 yes Figure 1 Schematic diagram of the structure with the A part in the middle enlarged.

[0032] Figure 6 yes Figure 1 Schematic diagram of the structure of the BB section.

[0033] Figure 7 yes Figure 5 Schematic diagram of the structure of the CC section.

[0034] Figure 8 It is a schematic diagram of the structure of the second layer of screen in this application.

[0035] Fig. 9 It is a structural schematic diagram of the connection of the segmented screens of this application.

[0036] Fig.10 It is a schematic diagram of the structure of the first layer of screen in this application.

[0037] Fig.11 yes Fig.10 Schematic diagram of the structure of the EE section.

[0038] Fig.12 yes Fig.10 Schematic diagram of the structure of the FF section.

[0039] Fig.13 It is a structural schematic diagram of the pressure ring of this application.

[0040] Figure numerals: 1. grille; 11. enclosure; 12. first rib; 13. second rib; 14. first connecting plate; 15. second connecting plate; 16. connecting hole; 17. through hole; 18. connecting plate pressure plate; 2. screen layer; 21. first layer of screen; 211. segmented screen; 212. flange; 22. second layer of screen; 221. block screen; 24. binding wire; 25. metal wire; 3. support assembly; 31. main support beam; 32. auxiliary support beam; 33. connector; 4. pressure ring; 41. arc pressure plate; 42. fixing hole; 5. stud; 6. nut; 7. support ring; 71. mounting hole; 72. pre-welded nut; 8. filler; 9. channel area; 10. gasket. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings.

[0042] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0043] A support ring 7 is pre-welded on the inner wall of the reactor. A mounting hole 71 is provided on the support ring 7. A pre-welded nut 72 is provided at the bottom of the support ring 7 at a position corresponding to the mounting hole 71.

[0044] The present application embodiment discloses a reactor support grid assembly, referring to Figure 1 and Figure 2 , including several interconnected grids 1, a screen layer 2 is arranged on the grid 1, a support assembly 3 for supporting and fixing the grid 1 is arranged below the grid 1, a pressure ring 4 is arranged above the grid 1 near the inner wall of the reactor, the pressure ring 4 is crimped to the edge of the screen layer 2, and a fixing hole 42 is opened on the pressure ring 4 corresponding to the mounting hole 71 on the support ring 7. The stud 5 passes through the fixing hole 42 and the mounting hole 71 in sequence, and the grid 1 is fixed on the support ring 7 in cooperation with the pre-welded nut 72 and the nut 6. A gasket 10 is arranged on the pressure ring 4 to make the fixing of the pressure ring 4 more secure. The grid 1 is located on one side of the inner wall of the reactor to form a channel area 9, and a filler 8 is arranged between the grid 1 and the inner wall of the reactor. The filler 8 preferably uses a glass fiber rope, and the filler 8 is wound around the grid 1 near the outer side of the inner wall of the tower body. The filler 8 is tightly pressed against the inner wall of the reactor and the grid 1 to prevent the leakage of the catalyst.

[0045] The screen layer 2 includes a first screen layer 21 and a second screen layer 22 which are overlapped in sequence. The first screen layer 21 is preferably made of mesh steel wire, and the second screen layer 22 is preferably made of mesh steel wire. The second screen layer 22 is provided with an upwardly folded flange 212 near the inner wall of the reactor, and the flange 212 is overlapped to the inner wall of the tower body.

[0046] Reference Figure 3 and Figure 4 The grille 1 includes a surrounding plate 11, on the inner side of which are arranged a plurality of first ribs 12 arranged in parallel and second ribs 13 vertically connected to the plurality of first ribs 12, the height of the first ribs 12 is equal to the height of the surrounding plate 11, the height of the second ribs 13 is less than the height of the first ribs 12, and the surrounding plate 11 is provided with a plurality of connecting holes 16 distributed at equal intervals, and adjacent grilles 1 are connected together by bolts passing through the connecting holes 16 on the surrounding plate 11 and cooperating with nuts 6.

[0047] The surrounding plate 11 of the grid 1 located at the inner wall of the reactor is configured as an arc-shaped structure that fits the inner wall of the reactor.

[0048] Reference Figure 5 , Figure 6 and Figure 7 The support assembly 3 includes a main support beam 31 and an auxiliary support beam 32. The main support beam 31 is arranged below the connection between adjacent grilles 1 parallel to the second rib 13. The auxiliary support beam 32 is located between the main support beams 31 on both sides of the channel area 9. A connecting member 33 is arranged between the main support beam 31 and the auxiliary support beam 32. The main support beam 31 and the auxiliary support beam 32 are connected together by the connecting member 33 to increase the stability of the supporting grille assembly mechanism.

[0049] A first connecting plate 14 is disposed at the top of the inner side of the enclosure 11 of the grille 1 , and a second connecting plate 15 is disposed at the bottom. The first connecting plate 14 and the second connecting plate 15 are correspondingly provided with through holes 17 for the studs 5 to pass through.

[0050] A connecting plate pressing plate 18 is arranged above the position of the through hole 17 corresponding to the screen layer 2, and the connecting plate pressing plate 18 is crimped onto the screen layer 2. The stud 5 passes through the connecting plate pressing plate 18 and the through hole 17 and cooperates with the nut 6 to fix the screen layer 2 and the grille 1 on the supporting assembly 3.

[0051] Reference Figure 8 and Fig. 9 The first layer of screen 21 includes at least one layer of several segmented screens 211, and the adjacent segmented screens 211 are overlapped together and stitched together by metal wires 25. The overlapped part of the segmented screens 211 completely covers the gap at the connection of the grid 1 to prevent the catalyst from leaking.

[0052] Reference Fig.10 , Fig.11 and Fig.12 The second layer of screen 22 is composed of block screens 221 of the same size as the upper end surface of the grille 1. The block screens 221 are tied to the enclosure 11 of the grille 1 by tying wires 24, and adjacent block screens 221 are tied and connected by tying wires 24.

[0053] Reference Fig.13 The pressure ring 4 includes a plurality of arc-shaped pressure plates 41 , which are spliced ​​into a circular pressure ring 4 , and the fixing holes 42 are opened on the arc-shaped pressure plates 41 , and the arc-shaped pressure plates 41 are pressed to the top of the edge of the screen layer 2 .

[0054] The implementation principle of a reactor support grid assembly in the embodiment of the present application is: by setting a mesh layer 2, the sealing of the support grid assembly is ensured to prevent the catalyst from leaking; at the same time, the flatness of the surface of the support grid assembly is ensured. During installation, multiple grids 1 are connected together by bolts and nuts 6 to form an integral structure; the connecting plate pressing plate 18 is crimped to the position corresponding to the through hole 17 on the mesh layer 2, and the stud 5 passes through the connecting plate pressing plate 18 and the through hole 17, and cooperates with the nut 6 to fix the mesh layer 2 and the grid 1 on the support assembly 3 to form the overall structure of the support grid assembly; the support grid assembly is crimped to the edge of the mesh layer 2 by a pressure ring 4, and the stud 5 passes through the pressure ring 4 and cooperates with the nut 6 to install the support grid assembly on the support ring 7 set on the inner wall of the reactor; a filler 8 is set between the grid 1 and the inner wall of the reactor to ensure the sealing between the support grid assembly and the inner wall of the reactor.

[0055] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A reactor support grid assembly, characterized in that: The invention comprises a plurality of grids (1) connected to each other, wherein a screen layer (2) is arranged on the grid (1), wherein the screen layer (2) comprises a first layer of screen (21), wherein the first layer of screen (21) is provided with at least one layer of a plurality of segmented screens (211), wherein the edges of the segmented screens (211) overlap at the connection of the grid (1), wherein the plurality of segmented screens (211) are fixedly connected, wherein the screen layer (2) is detachably connected to the grid (1) via a fixing member, wherein a support assembly (3) for supporting and fixing the grid (1) is arranged under the grid (1), wherein a pressure ring (4) is arranged above the grid (1), wherein the pressure ring (4) is pressed onto the edge of the screen layer (2), and wherein the grid (1) is detachably connected to a support ring (7) preset on the inner wall of a reactor through a fixing member passing through the pressure ring (4).

2. The reactor support grid assembly according to claim 1, characterized in that: The grille (1) comprises a panel (11), wherein a first rib (12) and a second rib (13) which are fixedly connected are arranged inside the panel (11), and a plurality of connection holes (16) are provided on the panel (11), and the grilles (1) which are in contact with each other are fixedly connected by means of fixing parts passing through the connection holes (16).

3. The reactor support grid assembly according to claim 2, characterized in that: A first connecting plate (14) is provided at one end of the enclosure (11) close to the screen layer (2), and a second connecting plate (15) is provided at a side of the enclosure (11) away from the screen layer (2). Through holes (17) are correspondingly provided on the first connecting plate (14) and the second connecting plate (15), and the first connecting plate (14) and the second connecting plate (15) are both connected to the inner side of the enclosure (11); the grille (1) passes through the through holes (17) via fixing parts and is respectively connected to the screen layer (2) and the support assembly (3); the first connecting plate (14) is in contact with the screen layer (2), and the second connecting plate (15) is in contact with the support assembly (3).

4. The reactor support grid assembly according to claim 1, characterized in that: The screen layer (2) further comprises a second screen layer (22), wherein the second screen layer (22) comprises a plurality of segmented screens (221), wherein the segmented screens (221) are fixedly connected to the grid (1), and the first screen layer (21) is pressed onto the second screen layer (22).

5. The reactor support grid assembly according to claim 4, characterized in that: The aperture size of the first layer of screen (21) is smaller than the aperture size of the second layer of screen (22).

6. The reactor support grid assembly according to claim 4, characterized in that: The edge of the second layer of screen (22) is provided with a flange (212) overlapping the inner wall of the reactor, and the flange (212) faces the side away from the grid (1).

7. The reactor support grid assembly according to claim 1, characterized in that: The pressure ring (4) comprises a plurality of arc-shaped pressure plates (41), and the arc-shaped pressure plates (41) are pressed onto the upper side of the edge of the screen layer (2).

8. The reactor support grid assembly according to claim 1, characterized in that: A filling material (8) for sealing is arranged between the grid (1) and the inner wall of the reactor.

9. The reactor support grid assembly according to claim 8, characterized in that: The filler (8) is arranged around a side of the grid (1) close to the inner wall of the reactor, and the filler (8) is in contact with the inner wall of the reactor.

10. The reactor support grid assembly according to claim 2, characterized in that: The support assembly (3) comprises a main support beam (31) and an auxiliary support beam (32); the main support beam (31) is located below the connection between adjacent grilles (1) parallel to the second rib plate (13); the auxiliary support beam (32) is located between adjacent main support beams (31); a connecting member (33) is provided between the main support beam (31) and the auxiliary support beam (32); the main support beam (31) and the auxiliary support beam (32) are detachably connected to the bottom of the grille (1) via a fixing member.

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