Deposition container of optical fiber preform

Abstract

The utility model relates to a deposition container of an optical fiber preform, which comprises a body and a water cooling component, the body is provided with a first side wall and a second side wall which are opposite to each other, and a high-temperature area is arranged between the first side wall and the second side wall; the water cooling assembly comprises a circulating water tank, a water inlet pipe and a water drainage pipe, the circulating water tank is arranged in the high-temperature area, one end of the water inlet pipe penetrates through the first side wall and communicates with the circulating water tank, and one end of the water drainage pipe penetrates through the second side wall and communicates with the circulating water tank. By cooling the high-temperature area, the structure can be stable under severe use working conditions such as high temperature, cracking, deformation, bulging and embrittlement of the high-temperature area are prevented, and the service life is effectively prolonged. And in the deposition process, poor deposition caused by deterioration of the deposition container is reduced, so that the stability of product deposition in the OVD process is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber preform manufacturing, in particular to a deposition container for optical fiber preform. Background Art

[0002] The chemical reaction mechanism of the OVD (Outside Vapour Deposition) process is flame hydrolysis. Specifically, the desired core glass composition is gradually deposited layer by layer using gaseous halides (such as SiCl4) carried in an oxyhydrogen or methane flame to produce a "powder." The OVD process consists of two specific steps: deposition and sintering. First, a porous glass preform core rod is deposited according to the designed optical fiber refractive profile (the preform grows radially from the inside out). The deposited preform core rod is then sintered to remove any residual moisture, resulting in a transparent, moisture-free optical fiber preform core rod.

[0003] During the OVD process for optical fiber preforms, the entire preform core rod deposition process takes place within a deposition vessel, subjecting it to high temperatures, flames, and chemical corrosion. Over time, these vessels will inevitably develop cracking, deformation, bulging, and embrittlement, significantly impacting the stability of the product manufacturing process. Utility Model Content

[0004] Based on the above description, the present invention provides a deposition container for optical fiber preform, aiming to solve the problems of existing deposition containers causing cracking, deformation, bulging and embrittlement due to high temperature, flame and chemical erosion.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A deposition container for an optical fiber preform, comprising:

[0007] A body having a first side wall and a second side wall opposite to each other, wherein a high temperature area is defined between the first side wall and the second side wall;

[0008] The water cooling assembly includes a circulating water tank, a water inlet pipe and a drain pipe. The circulating water tank is arranged in the high-temperature area. The water inlet pipe and the drain pipe are both arranged outside the main body, and the water inlet pipe and the drain pipe are axially symmetrical about the central axis of the main body. One end of the water inlet pipe passes through the first side wall and is connected to the circulating water tank, and one end of the drain pipe passes through the second side wall and is connected to the circulating water tank.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the circulating water tank is detachably connected to the body.

[0011] Furthermore, the circulating water tank includes a shell, a first connecting frame and a second connecting frame, the first connecting frame is arranged at the top of the shell, the second connecting frame is arranged at the bottom of the shell, the first connecting frame is detachably connected to the main body, each plate of the second connecting frame is provided with at least one through hole, and the main body is provided with a connecting hole corresponding to each through hole, the sedimentation container includes a fastening component and a supporting component, the number of the fastening components is associated with the number of the through holes, one end of the fastening component is passed through the through hole and the connecting hole, the supporting component includes a supporting frame, and the supporting frame is used to support the second connecting frame.

[0012] Furthermore, the connecting hole is a stepped hole, and the fastening assembly includes a connecting sleeve, a support sleeve and a stepped rod. The connecting sleeve is detachably connected to the first connecting frame, and a through hole extending in the axial direction is provided on the connecting sleeve. The support sleeve is arranged in the connecting hole, and a conical channel extending in the axial direction is provided in the support sleeve. One end of the stepped rod passes through the through hole and the through hole in sequence and is inserted into the conical channel.

[0013] Furthermore, the support sleeve is provided with a plurality of long grooves spaced apart along the circumferential direction, and all of the long grooves are connected to the tapered channel.

[0014] Furthermore, a power assist handle is sleeved on one end of the step rod close to the connecting sleeve.

[0015] Furthermore, the carrying frame has at least a pair of mounting surfaces, the carrying assembly includes a pressing unit, each of the mounting surfaces is provided with the pressing unit, and the pressing unit includes a plurality of pressing members arranged at intervals along the length direction of the mounting surface.

[0016] Furthermore, the main body includes a box body and an end cover, the end cover is arranged on the top of the box body, the sedimentation container includes an exhaust assembly, the exhaust assembly includes an exhaust pipe, a sleeve and a diverter pipe, the sleeve is sleeved on the other end of the exhaust pipe, there are multiple diverter pipes, all of which are arranged at intervals along the circumference of the sleeve, and all of the diverter pipes are connected to the sleeve, the diverter pipe includes a first connecting pipe and a second connecting pipe connected in sequence, the second connecting pipe has an exhaust channel and a water cooling channel, the exhaust channel is connected to the channel of the first connecting pipe, there are multiple water cooling channels, and all of the water cooling channels are arranged at intervals around the axis of the exhaust channel.

[0017] Furthermore, the exhaust channel and the water cooling channel are both corrugated.

[0018] Furthermore, the high temperature area of ​​the body is made of titanium metal or titanium aluminum vanadium alloy.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0020] (1) By cooling the high-temperature area, the present invention can stabilize the structure under harsh operating conditions such as high temperature, prevent cracking, deformation, bulging and embrittlement in the high-temperature area, and effectively extend the service life. During the deposition process, it reduces the poor deposition caused by the deterioration of the deposition container, thereby effectively improving the stability of product deposition in the OVD process.

[0021] (2) The present application forms a fastening mechanism by means of a fastening assembly and a bearing assembly, so that the fastening assembly and the bearing assembly cooperate with each other to fasten the circulating water tank, thereby realizing rapid disassembly and assembly of the circulating water tank.

[0022] (3) The present application can slow down the flow rate of high-temperature gas through the corrugated exhaust channel and the water-cooling channel, and prolong the time for heat exchange between the high-temperature gas and the cooling water, thereby achieving a better cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a general assembly diagram of a deposition container for an optical fiber preform provided in an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional view of the box body in the embodiment of the present utility model;

[0025] Figure 3 This is a structural diagram of a circulating water tank in an embodiment of the present utility model;

[0026] Figure 4 for Figure 2 A partial enlarged view of the middle A;

[0027] Figure 5 This is a structural diagram of the fastening assembly in an embodiment of the present utility model;

[0028] Figure 6 This is a structural diagram of the connecting sleeve in an embodiment of the utility model;

[0029] Figure 7 This is a schematic structural diagram of the support sleeve in an embodiment of the present utility model;

[0030] Figure 8 This is a schematic structural diagram of a step rod in an embodiment of the present utility model;

[0031] Figure 9 for Figure 2 A partial enlarged view of point B in the middle;

[0032] Figure 10It is a structural schematic diagram of the sleeve and the diverter pipe in the embodiment of the utility model.

[0033] The reference numerals are as follows:

[0034] 10. Main body; 101. High temperature area; 1011. Through hole; 11. Box; 12. End cover;

[0035] 20. Water cooling assembly; 21. Circulating water tank; 211. Housing; 212. First connecting frame; 2121. Connecting hole; 213. Second connecting frame; 22. Drain pipe;

[0036] 30. Fastening assembly; 31. Connecting sleeve; 311. Through hole; 32. Support sleeve; 321. Conical channel; 33. Step rod; 331. Power handle;

[0037] 40. Carrying assembly; 41. Carrying frame; 411. Mounting surface; 42. Pressing unit; 421. Pressing member;

[0038] 50. Exhaust assembly; 51. Exhaust pipe; 52. Sleeve; 53. Diverter pipe; 531. First connecting pipe; 532. Second connecting pipe; 5321. Exhaust channel; 5322. Water cooling channel. DETAILED DESCRIPTION

[0039] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0041] It will be understood that the spatially relative terms "beneath", "below", "lower", "under", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device is inverted or flipped over, a lower surface or element that is described as "below" or "beneath" another surface or element or feature in the illustrated configuration can then be oriented "above" the other surface or element or feature. Thus, the example terms "below" and "beneath" can encompass both an orientation of above and below. The devices can also be oriented in other ways (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein are to be interpreted accordingly.

[0042] As used herein, the singular form "a", "an" and "the" include plural references unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and / or "comprising", or "includes" and / or "including" when used herein, specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0043] Referring to the drawings Figures 1-3 The utility model provides a kind of technical scheme: a deposition vessel of optical fiber preform, deposition vessel includes body 10 and water cooling assembly 20, body 10 has opposite first side wall and second side wall, with high temperature area 101 between first side wall and second side wall;Water cooling assembly 20 includes circulating water tank 21, water inlet pipe and drain pipe 22, circulating water tank 21 is located in high temperature area 101, one end of water inlet pipe penetrates first side wall and is communicated with circulating water tank 21, one end of drain pipe penetrates second side wall and is communicated with circulating water tank 21.

[0044] According to the embodiment, water inlet pipe and drain pipe 22 are connected to external water cooling system to form water cooling circulation system. When optical fiber preform carries out OVD process, high temperature area 101 generates high temperature gas, and cooling water is input to circulating water tank 21 by water cooling system via water inlet pipe. At this time, cooling water exchanges heat with high temperature gas, and high temperature area 101 is cooled down. And cooling water after heat exchange becomes high temperature water, and high temperature water returns to water cooling system via drain pipe 22 to carry out heat exchange again, so that high temperature water becomes cooling water and can be input to circulating water tank 21 again. By cooling high temperature area 101, the structure can be stable under high temperature and other harsh use conditions, and high temperature area 101 is prevented from cracking, deforming, bulging and embrittlement, etc., so that the service life is effectively prolonged.

[0045] Referring to the drawings Figures 2-3As shown, in some embodiments, the circulating water tank 21 is detachably connected to the body 10 .

[0046] Exemplarily, the circulating water tank 21 is connected to the body 10 by screws or the like.

[0047] According to this embodiment, the circulating water tank 21 and the main body 10 are designed to be split, so that the circulating water tank 21 and the main body 10 can be disassembled and assembled, thereby effectively reducing the use cost of the main body 10.

[0048] Refer to the attached Figures 2-3 As shown, in some embodiments, the circulating water tank 21 includes a shell 211, a first connecting frame 212 and a second connecting frame 213. The first connecting frame 212 is arranged at the top of the shell 211, and the second connecting frame 213 is arranged at the bottom of the shell 211. The first connecting frame 212 is detachably connected to the main body 10. Each plate of the second connecting frame 213 is provided with at least one through hole 1011, and the main body 10 is provided with a connecting hole 2121 corresponding to each through hole 1011. The sedimentation container includes a fastening component 30 and a supporting component 40. The number of the fastening components 30 is associated with the number of the through holes 1011. One end of the fastening component 30 is passed through the through hole 1011 and the connecting hole 2121. The supporting component 40 includes a supporting frame 41, and the supporting frame 41 is used to support the second connecting frame 213.

[0049] For example, the fastening assembly 30 may be a screw or bolt, etc. The connection hole 2121 may be a screw hole, etc. The supporting frame 41 and the body 10 may be connected by screws or bolts, etc., or may be welded or riveted.

[0050] According to this embodiment, when the circulating water tank 21 is assembled, the second connecting frame 213 contacts the supporting frame 41, allowing the supporting frame 41 to support the entire circulating water tank 21. The first connecting frame 212 is then secured to the body 10 by connecting the fastening assembly 30 with the through hole 1011 and the connecting hole 2121. This allows for quick disassembly of the circulating water tank 21 from the body 10, thereby improving work efficiency.

[0051] Refer to the attached Figures 2-8 As shown, in some embodiments, the connecting hole 2121 is a stepped hole, and the fastening assembly 30 includes a connecting sleeve 31, a support sleeve 32 and a stepped rod 33. The connecting sleeve 31 is detachably connected to the first connecting frame 212. A through hole 311 extending axially is provided on the connecting sleeve 31. The support sleeve 32 is arranged in the connecting hole 2121. A conical channel 321 extending axially is provided in the support sleeve 32. One end of the stepped rod 33 passes through the through hole 311 and the through hole 1011 in sequence and is inserted into the conical channel 321.

[0052] Exemplarily, when the connecting sleeve 31 is fixed to the first connecting frame 212 , the through hole 311 and the through hole 1011 remain coaxial.

[0053] According to this embodiment, after the step rod 33 is inserted into the tapered channel 321, as the step rod 33 gradually goes deeper, the tapered channel 321 exerts a squeezing force on the step rod 33. This prevents the step rod 33 from loosening and ensures that the first connecting frame 212 is fastened to the body 10.

[0054] Refer to the attached Figure 7 As shown, in some embodiments, the support sleeve 32 is provided with a plurality of long grooves spaced apart along the circumferential direction, and all the long grooves are connected to the tapered channel 321 .

[0055] According to this embodiment, as the stepped rod 33 continues to move deeper into the tapered channel 321, the tapered channel 321 exerts a squeezing force on the stepped rod 33. Simultaneously, the elongated slots cause the end of the support sleeve 32, distal from the connecting sleeve 31, to expand and come into close contact with the inner wall of the connecting hole 2121. This, coupled with the inner wall of the connecting hole 2121, exerts a squeezing force on the support sleeve 32, further tightening the stepped rod 33. This coordinated interaction between the stepped rod 33, the support sleeve 32, and the inner wall of the connecting hole 2121 allows for a tighter securement of the stepped rod 33.

[0056] Refer to the attached Figure 8 As shown, in some embodiments, a power assist handle 331 is sleeved on one end of the step rod 33 close to the connecting sleeve 31 .

[0057] According to this embodiment, the power-assisting handle 331 can easily pull the step rod 33 out of the tapered channel 321. In addition, when the step rod 33 is tightened too tightly, the power-assisting handle 331 can be used to slowly rotate the step rod 33 to gradually loosen the step rod 33, thereby preventing the step rod 33 from being stuck in the support sleeve 32.

[0058] Refer to the attached Figure 9 As shown, in some embodiments, the supporting frame 41 has at least a pair of mounting surfaces 411 , and the supporting assembly 40 includes a clamping unit 42 , each mounting surface 411 is provided with a clamping unit 42 , and the clamping unit 42 includes a plurality of clamping members 421 arranged at intervals along the length direction of the mounting surface 411 .

[0059] For example, the pressing member 421 may be composed of a block structure and an elastic member, and the elastic member is abutted between the block structure and the bearing seat. The elastic member may be a spring, etc.

[0060] According to this embodiment, when the circulating water tank 21 is assembled, the pressing member 421 can exert a compressive force on the second connecting frame 213 to prevent the circulating water tank 21 from moving. In addition, the fastening assembly 30 and the supporting assembly 40 form a fastening mechanism, which cooperates with the supporting assembly 40 to fasten the circulating water tank 21, thereby enabling quick assembly and disassembly of the circulating water tank 21.

[0061] Refer to the attachedFigure 1 and 10 As shown, in some embodiments, the main body 10 includes a box body 11 and an end cover 12, the end cover 12 is arranged on the top of the box body 11, and the sedimentation container includes an exhaust assembly 50, the exhaust assembly 50 includes an exhaust pipe 51, a sleeve 52 and a diverter pipe 53, the sleeve 52 is sleeved on the other end of the exhaust pipe 51, there are multiple diverter pipes 53, all of which are arranged at intervals along the circumference of the sleeve 52, and all of the diverter pipes 53 are connected to the sleeve 52, the diverter pipe 53 includes a first connecting pipe 531 and a second connecting pipe 532 connected in sequence, the second connecting pipe 532 has an exhaust channel 5321 and a water-cooling channel 5322, the exhaust channel 5321 is connected to the channel of the first connecting pipe 531, there are multiple water-cooling channels 5322, and all of the water-cooling channels 5322 are arranged at intervals around the axis of the exhaust channel 5321.

[0062] Illustratively, the connection hole 2121 is formed on the inner wall of the housing 11. The end of the water-cooling channel 5322 closest to the first connecting pipe 531 serves as the water inlet, while the end of the water-cooling sleeve 52 distal from the first connecting pipe 531 serves as the water outlet. Both the water inlet and the water outlet pipe 22 are connected to the water cooling system. An air intake device can be provided at the end of the exhaust pipe 51 located within the end cover 12.

[0063] According to this embodiment, when the optical fiber preform undergoes the OVD process, a large amount of high-temperature gas is generated in the housing 11. This high-temperature gas then moves upward through the exhaust pipe 51, sleeve 52, and first connecting pipe 531 into the exhaust channel 5321, where it exchanges heat with the cooling water in the water-cooling channel 5322, resulting in the gas discharged from the exhaust channel 5321 being low-temperature.

[0064] Refer to the attached Figure 10 As shown, in some embodiments, the exhaust channel 5321 and the water cooling channel 5322 are both corrugated.

[0065] According to this embodiment, by such an arrangement, the flow rate of the high-temperature gas can be slowed down, and the time for heat exchange between the high-temperature gas and the cooling water can be prolonged, thereby achieving a better cooling effect.

[0066] Optionally, the high temperature region 101 of the body 10 is made of titanium or titanium-aluminum-vanadium alloy.

[0067] According to this embodiment, such a material can provide the high temperature region 101 with high temperature resistance, corrosion resistance, and crack resistance.

[0068] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A deposition container for an optical fiber preform, characterized in that: The deposition container comprises: A body (10) having a first side wall and a second side wall opposite to each other, a high-temperature area (101) being provided between the first side wall and the second side wall; A water cooling assembly (20) comprises a circulating water tank (21), a water inlet pipe and a drain pipe (22), wherein the circulating water tank (21) is arranged in the high-temperature area (101), one end of the water inlet pipe passes through the first side wall and is in communication with the circulating water tank (21), and one end of the drain pipe (22) passes through the second side wall and is in communication with the circulating water tank (21).

2. The deposition container for optical fiber preform according to claim 1, characterized in that: The circulating water tank (21) is detachably connected to the body (10).

3. The deposition container for optical fiber preform according to claim 1, characterized in that: The circulating water tank (21) comprises a shell (211), a first connecting frame (212) and a second connecting frame (213), wherein the first connecting frame (212) is arranged at the top of the shell (211), and the second connecting frame (213) is arranged at the bottom of the shell (211), and the first connecting frame (212) is detachably connected to the body (10), and each plate of the second connecting frame (213) is provided with at least one through hole (1011), and the body (10) is provided with a connecting hole (2121) corresponding to each through hole (1011). The sedimentation container comprises a fastening assembly (30) and a bearing assembly (40), and the number of the fastening assemblies (30) is associated with the number of the through holes (1011). One end of the fastening assembly (30) is passed through the through hole (1011) and the connecting hole (2121), and the bearing assembly (40) comprises a bearing frame (41), and the bearing frame (41) is used to support the second connecting frame (213).

4. The deposition container for optical fiber preform according to claim 3, characterized in that: The connecting hole (2121) is a stepped hole. The fastening assembly (30) comprises a connecting sleeve (31), a supporting sleeve (32) and a stepped rod (33). The connecting sleeve (31) is detachably connected to the first connecting frame (212). The connecting sleeve (31) is provided with a through hole (311) extending in the axial direction. The supporting sleeve (32) is arranged in the connecting hole (2121). The supporting sleeve (32) has a tapered channel (321) extending in the axial direction. One end of the stepped rod (33) passes through the through hole (311) and the through hole (1011) in sequence and is plugged into the tapered channel (321).

5. The deposition container for optical fiber preform according to claim 4, characterized in that: The support sleeve (32) is provided with a plurality of long slots arranged at intervals along the circumferential direction, and all of the long slots are in communication with the tapered channel (321).

6. The deposition container for optical fiber preform according to claim 5, characterized in that: An end of the step rod (33) close to the connecting sleeve (31) is sleeved with a power assist handle (331).

7. The deposition container for optical fiber preform according to claim 3, characterized in that: The carrying frame (41) has at least one pair of mounting surfaces (411), and the carrying assembly (40) includes a pressing unit (42). Each of the mounting surfaces (411) is provided with the pressing unit (42), and the pressing unit (42) includes a plurality of pressing members (421) arranged at intervals along the length direction of the mounting surface (411).

8. The deposition container for optical fiber preform according to claim 1, wherein: The body (10) includes a box body (11) and an end cover (12), wherein the end cover (12) is arranged on the top of the box body (11), and the deposition container includes an exhaust assembly (50), wherein the exhaust assembly (50) includes an exhaust pipe (51), a sleeve (52) and a diversion pipe (53), wherein the sleeve (52) is sleeved on the other end of the exhaust pipe (51), and the diversion pipe (53) is multiple, and all the diversion pipes (53) are arranged at intervals along the circumference of the sleeve (52), and all the diversion pipes ( 53) are connected to the sleeve (52), the diverter pipe (53) includes a first connecting pipe (531) and a second connecting pipe (532) connected in sequence, the second connecting pipe (532) has an exhaust channel (5321) and a water-cooling channel (5322), the exhaust channel (5321) is connected to the channel of the first connecting pipe (531), there are multiple water-cooling channels (5322), and all the water-cooling channels (5322) are arranged at intervals around the axis of the exhaust channel (5321).

9. The deposition container for optical fiber preform according to claim 8, characterized in that: The exhaust channel (5321) and the water cooling channel (5322) are both corrugated.

10. The deposition container for an optical fiber preform according to any one of claims 1 to 9, characterized in that: The high-temperature region (101) of the body (10) is made of titanium metal or titanium-aluminum-vanadium alloy.

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