Gas distribution flange for a tubular reactor

Abstract

A gas distribution flange for a tubular reactor comprises a circular flange body, a plurality of first annular grooves are arranged on the inner circumferential side of the flange body, the plurality of first annular grooves are arranged at intervals along the axial direction of the flange body, a retaining ring matching the first annular groove is arranged on the opening side of each first annular groove, the inner circumferential side of the retaining ring is flush with the inner circumferential side of the flange body, each first annular groove and the corresponding retaining ring form an annular airway, each retaining ring is evenly distributed with a plurality of through holes connecting the inside and outside of the first annular groove, each through hole is provided with a plunger matching the through hole, the plunger is a solid plunger or a plunger with a perforation, a plurality of air holes are arranged on the outer circumferential side of the flange body, the air holes are arranged at intervals along the circumferential direction of the flange body, the air holes correspond to the first annular grooves one by one and the corresponding air holes are connected to the first annular grooves. The gas distribution flange distributes gas evenly and can adjust the size and flow direction of the intake air as needed.

Description

Technical Field

[0001] The invention relates to a gas distribution flange of a tubular reactor. Background Art

[0002] In the chemical vapor deposition coating process, the gas intake mode of the tubular reactor includes single furnace mouth gas intake, single furnace tail gas intake or a combination of the two. The existing tubular reactor gas intake furnace mouth gas distribution device is to install two air pipes on the flange, with only two points of gas intake, uneven gas distribution and unable to adjust the size and flow direction of the gas intake. The existing technology also uses a spray plate, the spray plate and the tubular reactor cannot be integrated together, and are split. The design is complicated on the automated equipment and the gas intake cannot be adjusted. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a gas distribution flange for a tubular reactor which has uniform gas distribution and can adjust the size and flow direction of the inlet gas.

[0004] In order to solve the above technical problems, the present invention provides a gas distribution flange for a tubular reactor, comprising a circular flange body, a plurality of first annular grooves are arranged on the circumferential inner side of the flange body, the plurality of first annular grooves are arranged at intervals along the axial direction of the flange body, a retaining ring matching the first annular groove is arranged on the opening side of each first annular groove, the circumferential inner side of the retaining ring is flush with the circumferential inner side of the flange body, each first annular groove and the corresponding retaining ring form an annular air channel, each retaining ring is circumferentially evenly distributed with a plurality of through holes connecting the inside and outside of the first annular groove, each through hole is provided with a plunger matching the through hole, the plunger is a solid plunger or a plunger with a perforation, a plurality of air holes are arranged on the circumferential outer side of the flange body, the air holes are arranged at intervals along the circumference of the flange body on the outside of the flange body, the air holes correspond one-to-one to the first annular grooves and the corresponding air holes are connected to the first annular grooves.

[0005] For the purpose of simple explanation, the gas distribution flange of a tubular reactor described in the present invention is referred to as the gas distribution flange below.

[0006] The method of using the gas flange is as follows: install the gas flange at the pipe mouth of the tubular reactor, then connect the coating gas pipelines to the air holes respectively, then install perforated plungers or solid plungers with different apertures on the corresponding through holes according to the requirements of coating, then control the blind plate that matches the tubular reactor to seal the pipe mouth of the tubular reactor, then evacuate and heat, and finally introduce the coating gas to complete the coating.

[0007] The advantages of this air distribution flange are: the air distribution of this air distribution flange is uniform and the size and flow direction of the air intake can be adjusted by replacing plungers with different apertures or solid plungers, so as to meet different types of coating requirements.

[0008] In order to better achieve the use effect of this air-to-fabric flange, the preferred solution is as follows:

[0009] Preferably, the flange body is provided with an annular water channel arranged along the circumference of the flange body, the annular water channel is provided with a partition matching the annular water channel, and a channel connecting the annular water channel is respectively provided on both sides of the partition in the annular water channel at the circumferential outer side of the flange body.

[0010] One of the two channels connected with the annular water channel is a water inlet and the other is a water outlet, so that a circulating water channel can be formed in the flange body, which has the effect of cooling the flange body and protecting the flange body from being damaged by the high temperature of the heating furnace.

[0011] Preferably, at least one axial side surface of the flange body is provided with a second annular groove arranged along the circumference of the flange body, and the opening of the second annular groove is a closed structure.

[0012] When the air-in-place flange needs to cooperate with other flanges, installing a matching rubber ring in the second annular groove on the corresponding axial side can increase the air tightness of the flange cooperation. The closing structure can make the rubber ring installation more stable and not easy to fall out.

[0013] Preferably, the plunger and the through hole are threadedly matched.

[0014] The plunger is matched with the through-hole thread, which is convenient and quick to install and remove, and is easy to replace as needed.

[0015] Preferably, the through holes on the adjacent retaining rings are arranged alternately.

[0016] The through holes on the retaining rings at adjacent positions are arranged in a staggered manner, so that the air distribution flange can distribute air more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the front view of this air flange.

[0018] Figure 2 This is the left side view of this air flange.

[0019] Figure 3 This is a top view of the air flange.

[0020] Figure 4 yes Figure 1 AA section view.

[0021] Figure 5 yes Figure 2 EE partial cross-sectional enlarged view.

[0022] Figure 6 yes Figure 3An enlarged partial cross-sectional view of the FF.

[0023] Figure 7 yes Figure 4 DD partial cross-sectional enlarged view.

[0024] Figure 8 yes Figure 4 A partial enlarged view of part B.

[0025] Fig. 9 yes Figure 8 A partial enlarged view of part C. DETAILED DESCRIPTION

[0026] See also Figure 1-Figure 9 A gas distribution flange for a tubular reactor comprises a circular flange body 1, a plurality of first annular grooves 2 are arranged on the circumferential inner side of the flange body 1, the plurality of first annular grooves 2 are arranged at intervals along the axial direction of the flange body 1, a retaining ring 21 matching the first annular groove 2 is arranged on the opening side of each first annular groove 2, the circumferential inner side of the retaining ring 21 is flush with the circumferential inner side of the flange body 1, each first annular groove 2 and the corresponding retaining ring 21 form an annular gas channel, each retaining ring 21 is uniformly distributed circumferentially with a plurality of through holes 211 connecting the inside and outside of the first annular groove 2, the The through holes 211 on the adjacent retaining rings 21 are arranged alternately, each of the through holes 211 is provided with a plunger 212 matching the through hole 211, the plunger 212 and the through hole 211 are threadedly matched, the plunger 212 is a solid plunger 212 or a plunger 212 with a through hole 213, a plurality of air holes 22 are provided on the circumferential outer side of the flange body 1, the air holes 22 are arranged at intervals along the circumferential direction of the flange body 1 on the outer side of the flange body 1, the air holes 22 correspond to the first annular groove 2 one by one, and the corresponding air holes 22 are connected to the first annular groove 2.

[0027] The flange body 1 is also provided with an annular water channel 3 arranged along the circumference of the flange body 1, and the annular water channel 3 is provided with a partition 31 matching the annular water channel 3. A channel 32 connecting the annular water channel 3 is respectively provided on both sides of the partition 31 in the annular water channel 3 at the circumferential outer position of the flange body 1.

[0028] A second annular groove 4 arranged along the circumference of the flange body 1 is provided on at least one axial side surface of the flange body 1 , and the opening of the second annular groove 4 is a closed structure.

[0029] The method of using the present gas flange is as follows: install the present gas flange at the pipe mouth of the tubular reactor, and then connect the coating gas pipelines to the air holes 22 respectively, and then install the plunger 212 with the perforation 213 of different apertures or the solid plunger 212 on the corresponding through hole 211 according to the coating requirements, and then control the blind plate matched with the tubular reactor to seal the pipe mouth of the tubular reactor, and then evacuate and heat, and finally introduce the coating gas to complete the coating (the blind plate sealing, vacuuming and heating are completed by other components matched with the tubular reactor, which is the conventional technology in the field and will not be described in detail here).

[0030] The advantages of the present air distribution flange are that the air distribution of the present air distribution flange is uniform and the size and flow direction of the air intake can be adjusted by replacing the plunger 212 with different apertures or the solid plunger 212, so as to meet different types of coating requirements.

[0031] One of the two channels 32 connected to the annular water channel 3 is a water inlet and the other is a water outlet, so that a circulating water circuit can be formed in the flange body 1, which has the effect of cooling the flange body 1 and protecting the flange body 1 from being damaged by the high temperature of the heating furnace.

[0032] When the air-in-place flange needs to cooperate with other flanges, installing a matching rubber ring in the second annular groove 4 on the corresponding axial side can increase the air tightness of the flange cooperation. The closing structure can make the rubber ring installation more stable and not easy to fall out (the rubber ring is not shown in the figure).

[0033] The plunger 212 is threadably matched with the through hole 211, and is quick and easy to install and remove, and can be easily replaced as needed.

[0034] The through holes 211 on the retaining rings at adjacent positions are arranged in a staggered manner, so that the air distribution flange can distribute air more evenly.

[0035] It should be noted that the shape of the flange body 1 in the attached drawings of this embodiment is designed based on the structure of the corresponding tubular reactor in actual use. The technical features to be protected by this patent have no direct relationship with the specific shape of the flange body. Therefore, changing the shape and size of the flange body, or making equivalent replacements for the technical features of this patent are all within the scope of protection of this patent.

Claims

1. A gas distribution flange for a tubular reactor, comprising a circular flange body, characterized in that: A plurality of first annular grooves are arranged on the inner circumferential side of the flange body, and the plurality of first annular grooves are arranged at intervals along the axial direction of the flange body. A retaining ring matching the first annular groove is arranged on the opening side of each first annular groove, and the inner circumferential side of the retaining ring is flush with the inner circumferential side of the flange body. Each first annular groove and the corresponding retaining ring form an annular air passage, and each retaining ring is evenly distributed with a plurality of through holes connecting the inside and outside of the first annular groove in the circumferential direction. A plunger matching the through hole is arranged on each through hole, and the plunger is a solid plunger or a plunger with a perforation. A plurality of air holes are arranged on the outer circumferential side of the flange body, and the air holes are arranged at intervals along the circumferential direction of the flange body on the outer side of the flange body, and the air holes correspond to the first annular grooves one by one and the corresponding air holes are connected to the first annular grooves; The flange body is provided with an annular water channel arranged along the circumference of the flange body, the annular water channel is provided with a partition matching the annular water channel, and a channel connected to the annular water channel is provided at both sides of the partition in the annular water channel at the outer circumferential position of the flange body; A second annular groove is provided on at least one axial side surface of the flange body and is arranged along the circumference of the flange body, and the opening of the second annular groove is a closing structure; The plunger and the through hole are threadedly matched; The through holes on the retaining rings at adjacent positions are arranged in a staggered manner.

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