Chemical vapor infiltration reactor capable of conveniently adjusting acetylene flow

Abstract

The utility model discloses a chemical vapor infiltration reactor convenient to adjust acetylene flow, which comprises a flow adjusting assembly, the flow adjusting assembly is arranged on any section of a gas inlet pipe, the flow adjusting assembly comprises an adjusting seat, the adjusting seat is arranged in a mounting groove in a sliding manner, the end parts of the adjusting seat, which are far away from each other, are provided with mounting plates, and the mounting plates are arranged on the gas inlet pipe. The side wall of the mounting plate is in sliding fit with the inner wall of the mounting groove, a spring connected with the inner wall of the mounting groove and the mounting plate is further arranged in the mounting groove, an air bag is further arranged in the mounting groove and located on the sides, away from each other, of the adjusting seats, and the air bag drives the adjusting seats to be close to each other or away from each other through the volume change of the air bag. According to the acetylene flow adjusting device, the adjusting seats in the shell can be close to each other or far away from each other by adjusting the expansion degree of the air bag through the arranged flow adjusting assembly, so that the effective circulation sectional area of the air inlet channel is reduced or increased, acetylene flow adjustment is achieved, operation is convenient and fast, and the response speed is high.

Description

Technical Field

[0001] This invention belongs to the field of chemical vapor permeation technology, and particularly relates to a chemical vapor permeation reactor that facilitates the adjustment of acetylene flow rate. Background Technology

[0002] Chemical vapor infiltration (CVI) is a process in which one or more hydrocarbon gaseous compounds are decomposed and condensed at high temperatures, and then carbon is deposited inside a porous medium to densify the material. It is also known as chemical vapor deposition.

[0003] The inlet pipe on a chemical vapor permeation reactor is usually directly connected to the interior of the reactor body for the input of carbon-containing precursor gases (such as acetylene). However, the inner diameter of existing inlet pipes is often fixed. When it is necessary to control the flow rate of acetylene entering the reactor, operators need to adjust it from the source of the inlet pipe, which is time-consuming, labor-intensive, and inconvenient to operate. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0005] This utility model provides a chemical vapor permeation reactor for easy adjustment of acetylene flow rate, comprising a reactor body and an inlet pipe connected thereto, characterized in that it further comprises: a flow rate regulating component, wherein the flow rate regulating component is disposed on any section of the inlet pipe, and the flow rate regulating component comprises:

[0006] case,

[0007] An air intake channel is provided inside the housing and is connected to an air intake pipe;

[0008] Mounting slots are symmetrically formed on the inner sidewall of the housing;

[0009] An adjusting seat is slidably disposed in a mounting groove. A mounting plate is provided at the ends of the adjusting seat that are far apart from each other. The side wall of the mounting plate is slidably engaged with the inner wall of the mounting groove. A spring is also provided in the mounting groove to connect its inner wall and the mounting plate. An airbag is also provided inside the mounting groove and at the side of the adjusting seat that is far apart from each other. The airbag drives the adjusting seats to move closer or further apart by changing its volume.

[0010] As a preferred embodiment of the above technical solution, guide posts are also provided on both sides of the mounting groove, and the guide posts penetrate the mounting plate and slide in cooperation with the mounting plate.

[0011] As a preferred embodiment of the above technical solution, the spring is sleeved on the outside of the guide post.

[0012] As a preferred embodiment of the above technical solution, the output end of the air pump is provided with air supply pipes that are respectively connected to the two air bags.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention, through the flow regulation component, adjusts the expansion degree of the airbag to bring the adjustment seats inside the shell closer or further apart, thereby reducing or increasing the effective flow cross-sectional area of ​​the air intake channel, thus achieving the regulation of acetylene flow. It is easy to operate and has a fast response speed. Attached Figure Description

[0015] Figure 1 The diagram shown is a front view of the reactor in the embodiment.

[0016] Figure 2 The diagram shown is a structural schematic of the intake pipe and flow regulation assembly in the embodiment (state one);

[0017] Figure 3 What is shown is Figure 2 Enlarged schematic diagram of the structure at point A in the diagram;

[0018] Figure 4 The diagram shown is a structural schematic of the flow regulation component in the embodiment (state two);

[0019] Figure 5 The diagram shown is a side view of the flow regulation component in the embodiment;

[0020] Reference numerals: 10, reactor body; 20, air inlet pipe; 30, flow regulation component; 31, shell; 32, air inlet channel; 33, mounting groove; 34, adjustment seat; 35, air bladder; 36, mounting plate; 37, guide column; 38, spring; 39, air pump; 391, gas delivery pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0022] Example

[0023] like Figure 1 As shown, Figure 1 The diagram shown is a front view of the reactor in the embodiment.

[0024] This device includes:

[0025] Reactor body 10;

[0026] An air inlet pipe 20 is connected to the bottom of the reactor body 10;

[0027] The flow regulating component 30 is disposed on any section of the intake pipe 20.

[0028] The reactor body 10 serves as a reaction vessel, where a chemical gas-phase permeation reaction takes place. It has a gas outlet at the top and is connected to an inlet pipe 20 at the bottom for conveying reaction gases such as acetylene.

[0029] The flow regulating component 30 is installed on any section of the intake pipe 20 and is used to regulate the flow rate of acetylene in real time.

[0030] like Figure 2 , Figure 3 , Figure 4 As shown, Figure 2 The diagram shown is a structural schematic of the intake pipe and flow regulation assembly in the embodiment (state one); Figure 3 What is shown is Figure 2 Enlarged schematic diagram of the structure at point A in the diagram; Figure 4 The diagram shown is a structural schematic of the flow regulation component in the embodiment (state two);

[0031] Flow regulation component 30 includes:

[0032] Casing 31,

[0033] Air intake passage 32 is disposed inside housing 31 and connected to air intake pipe 20;

[0034] Mounting slots 33 are symmetrically formed on the inner sidewall of housing 31;

[0035] An adjusting seat 34 is slidably disposed in a mounting groove 33. A mounting plate 36 is provided at the ends of the adjusting seat 34 that are far apart from each other. The side wall of the mounting plate 36 is slidably engaged with the inner wall of the mounting groove 33. A spring 38 is also provided in the mounting groove 33 to connect its inner wall with the mounting plate 36. An airbag 35 is also provided inside the mounting groove 33 and at the side of the adjusting seat 34 that is far apart from each other. The airbag 35 drives the adjusting seat 34 to move closer or further apart by changing its volume.

[0036] The intake channel 32 supplies acetylene gas flow into the reactor body 10. The mounting slots 33 are symmetrically opened on the inner sidewalls of the upper and lower ends of the shell 31 to accommodate the regulating seats 34 and related components. When the regulating seats 34, which are movably set inside the mounting slots 33, move closer to each other, they gradually extend out of the mounting slots 33, thereby reducing the effective flow cross-sectional area of ​​the intake channel 32 and reducing the acetylene input flow rate. When the regulating seats 34 move further apart, the effective flow cross-sectional area of ​​the intake channel 32 increases and the acetylene input flow rate increases.

[0037] The position of the adjusting seat 34 can be adjusted and controlled by the spring 38 and the air bag 35.

[0038] In the initial state (e.g.) Figure 2 , Figure 3 As shown, the airbag 35 is in the contracted state, the spring 38 is in the naturally extended state, and the adjusting seats 34 are moved away from each other under the action of the spring 38. At this time, the effective flow cross-sectional area of ​​the air intake channel 32 is the largest, and the acetylene flow rate is the largest.

[0039] When it is necessary to adjust and reduce the acetylene inlet flow rate, the gas bladder 35 is inflated by an external gas source. Its increased volume compresses the adjusting seat 34, and the thrust of the gas bladder 35 overcomes the elastic force of the spring 38, driving the adjusting seats 34 closer together (e.g., ...). Figure 4 As shown in the figure, the effective flow cross-sectional area of ​​the intake channel 32 is gradually reduced.

[0040] By adjusting the inflation degree of the airbag 35, the opening degree of the air intake channel 32 can be precisely controlled, thereby achieving the regulation of acetylene flow.

[0041] Specifically, the ends of the regulating seats 34 that are close to each other are set in a conical shape to facilitate the flow of the input gas.

[0042] Guide posts 37 are provided on both sides of the mounting groove 33, and springs 38 are sleeved on the outside of the guide posts 37. The guide posts 37 pass through the mounting plate 36 and slide in cooperation with the mounting plate 36.

[0043] The guide post 37 provides a stable support path for the spring 38, reducing the risk of deformation or failure of the spring 38 due to lateral force. The mounting plate 36 has through holes that match the guide post 37 to ensure the stability of the adjustment seat 34 during movement.

[0044] like Figure 5 As shown, Figure 5 The diagram shown is a side view of the flow regulation component in the embodiment;

[0045] An air pump 39 is also provided on the outside of the housing 31, and the output end of the air pump 39 is provided with an air supply pipe 391 that is connected to the two airbags 35 respectively.

[0046] The air pump 39 injects or extracts inert gas (such as nitrogen) into the two airbags 35 simultaneously through the air supply pipe 391, thereby adjusting the volume change of the airbags 35 in real time and driving the adjustment seat 34.

[0047] Working principle: When this device is in use, if it is necessary to reduce the acetylene flow rate: the gas pump 39 injects inert gas into the gas bag 35 through the gas supply pipe 391, causing it to expand in volume. The expanded gas bag 35 squeezes the regulating seat 34, overcoming the elastic force of the spring 38, and drives the regulating seat 34 to move along the guide column 37 towards the center of the air intake channel 32. The end of the regulating seat 34 gradually extends out of the mounting groove 33, vertically compressing the upper and lower space of the air intake channel 32. The effective flow cross-sectional area of ​​the air intake channel 32 is reduced, and the acetylene flow rate is reduced.

[0048] When it is necessary to increase the acetylene flow rate: the air pump 39 draws gas from the air bag 35, causing its volume to shrink. The restoring force of the spring 38 pushes the adjusting seat 34 to reset. The end of the adjusting seat 34 retracts into the mounting groove 33, increasing the effective flow cross-sectional area of ​​the air intake channel 32 and increasing the acetylene flow rate.

[0049] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A chemical vapor infiltration reactor for facilitating adjustment of the flow of acetylene, comprising a reactor body (10) and a gas inlet pipe (20) in communication therewith, characterized in that, It also includes: a flow regulating component (30), which is disposed on any section of the intake pipe (20), and the flow regulating component (30) includes: Shell (31), An air intake channel (32) is provided inside the housing (31) and is connected to the air intake pipe (20); Mounting grooves (33) are symmetrically formed on the inner sidewall of the housing (31); An adjusting seat (34) is slidably disposed in a mounting groove (33). A mounting plate (36) is provided at the ends of the adjusting seats (34) that are far apart from each other. The side wall of the mounting plate (36) is slidably engaged with the inner wall of the mounting groove (33). A spring (38) is also provided in the mounting groove (33) to connect its inner wall with the mounting plate (36). An airbag (35) is also provided inside the mounting groove (33) and located on the side of the adjusting seats (34) that are far apart from each other. The airbag (35) drives the adjusting seats (34) to move closer or further apart from each other by changing its volume.

2. The chemical vapor infiltration reactor for facilitating adjustment of acetylene flow rate according to claim 1, wherein, Guide posts (37) are also provided on both sides of the mounting groove (33), and the guide posts (37) penetrate the mounting plate (36) and slide with the mounting plate (36).

3. The chemical vapor infiltration reactor for facilitating adjustment of acetylene flow as claimed in claim 2 wherein, The spring (38) is sleeved on the outside of the guide post (37).

4. The chemical vapor infiltration reactor for facilitating adjustment of acetylene flow as claimed in claim 1 wherein, An air pump (39) is also provided on the outside of the housing (31), and the output end of the air pump (39) is provided with an air supply pipe (391) that is connected to the two airbags respectively.

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