Deposition container of optical fiber preform

Abstract

The invention relates to a deposition container of an optical fiber preform, the deposition container comprises a body and a water cooling assembly, the body is provided with a first side wall and a second side wall which are opposite, 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 invention relates to the technical field of optical fiber preform manufacturing, and in particular to a deposition container for an optical fiber preform. Background Art

[0002] The chemical reaction mechanism of the OVD (Outside Vapour Deposition) process is flame hydrolysis, that is, the required core glass composition is gradually deposited layer by layer through the "powder" produced by gaseous halides (such as SiCl4) carried in the hydrogen-oxygen flame or the methane flame. The OVD process has two specific process steps: deposition and sintering: first, the porous glass preform core rod is deposited according to the designed optical fiber refractive distribution requirements (the growth direction of the preform is radially from the inside to the outside), and then the deposited preform core rod is sintered to remove residual water in order to obtain a transparent and moisture-free optical fiber preform core rod.

[0003] During the OVD process of optical fiber preform, since the entire preform core rod deposition process is completed in the deposition container, the deposition container must withstand high temperature, flame and chemical erosion. Over time, the deposition container will inevitably produce cracking, deformation, bulging and embrittlement, etc., which will have a great impact on the stability of the product process. Summary of the invention

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

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

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

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

[0008] A water cooling assembly comprises a circulating water tank, a water inlet pipe and a drain pipe, wherein 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] Based on the above technical solution, the present invention can also be improved as follows.

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

[0011] Further, 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, the main body is provided with a connecting hole corresponding to each through hole, the sedimentation container includes a fastening component and a bearing 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 bearing component includes a bearing frame, and the bearing 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 supporting sleeve and a stepped rod. The connecting sleeve is detachably connected to the first connecting frame, and a through hole extending along the axial direction is provided on the connecting sleeve. The supporting sleeve is arranged in the connecting hole, and a conical channel extending along the axial direction is provided in the supporting sleeve. One end of the step 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 arranged at intervals 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] Further, the bearing frame has at least one pair of mounting surfaces, the bearing assembly includes a clamping unit, each of the mounting surfaces is provided with the clamping unit, and the clamping unit includes a plurality of clamping members arranged at intervals along the length direction of the mounting surfaces.

[0016] Further, the main body includes a box body and an end cover, the end cover is arranged on the top of the box body, the deposition 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 passage and the water cooling passage 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 application 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, poor deposition caused by the deterioration of the deposition container is reduced, thereby effectively improving the stability of product deposition in the OVD process.

[0021] (2) The present application forms a fastening mechanism through a fastening component and a bearing component, so that the fastening component and the bearing component 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 It is a general assembly diagram of a deposition container of an optical fiber preform provided in an embodiment of the present invention;

[0024] Figure 2 is a cross-sectional view of a box body in an embodiment of the present invention;

[0025] Figure 3 It is a structural schematic diagram of a circulating water tank in an embodiment of the present invention;

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

[0027] Figure 5 It is a structural schematic diagram of a fastening assembly in an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the connecting sleeve in an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the support sleeve in an embodiment of the present invention;

[0030] Figure 8 Schematic diagram of the structure of the step rod in the embodiment of the present invention;

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

[0032] Fig.10 Schematic diagram of the structure of the sleeve and the shunt pipe in the embodiment of the present invention.

[0033] The reference numerals are as follows:

[0034] 10. body; 101. high temperature area; 1011. through hole; 11. box; 12. end cover;

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

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

[0037] 40. bearing assembly; 41. bearing 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] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is 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 belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0041] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0042] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0043] Refer to the attached Figures 1 to 3 As shown, the present invention provides a technical solution: a deposition container for an optical fiber preform, the deposition container comprising a main body 10 and a water-cooling assembly 20, the main body 10 having a first side wall and a second side wall opposite to each other, and a high-temperature area 101 between the first side wall and the second side wall; the water-cooling assembly 20 comprises a circulating water tank 21, a water inlet pipe and a drain pipe 22, 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 connected to the circulating water tank 21, and one end of the drain pipe passes through the second side wall and is connected to the circulating water tank 21.

[0044] According to this embodiment, the water inlet pipe and the drain pipe 22 are both connected to the external water cooling system to form a water cooling circulation system. When the optical fiber preform undergoes the OVD process, the high temperature area 101 generates high temperature gas, and cooling water is input to the circulating water tank 21 through the water cooling system via the water inlet pipe. At this time, the cooling water exchanges heat with the high temperature gas to cool down the high temperature area 101. The cooling water after the heat exchange becomes high temperature water, and the high temperature water returns to the water cooling system through the drain pipe 22 for another heat exchange, so that the high temperature water becomes cooling water and can be input into the circulating water tank 21 again. In this way, by cooling the high temperature area 101, the structure can be stable under harsh operating conditions such as high temperature, and the high temperature area 101 can be prevented from cracking, deformation, bulging and embrittlement, etc., effectively extending the service life.

[0045] Refer to the attached Figures 2-3 As 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 2-3As 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 has a connecting hole 2121 corresponding to each through hole 1011, the sedimentation container includes a fastening component 30 and a bearing 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 penetrated through the through hole 1011 and the connecting hole 2121, the bearing component 40 includes a bearing frame 41, and the bearing frame 41 is used to support the second connecting frame 213.

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

[0050] According to this embodiment, when the circulating water tank 21 is assembled, the second connection frame 213 contacts the supporting frame 41, so that the supporting frame 41 supports the entire circulating water tank 21. Then, the first connection frame 212 can be fixed to the body 10 by connecting the fastening assembly 30 to the through hole 1011 and the connection hole 2121. In this way, the circulating water tank 21 and the body 10 can be quickly disassembled, thereby improving work efficiency.

[0051] Refer to the attached Figures 2 to 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 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 along the axial direction. The supporting sleeve 32 is arranged in the connecting hole 2121. The supporting sleeve 32 has a tapered channel 321 extending along the axial direction. One end of the step rod 33 passes through the through hole 311 and the through hole 1011 in sequence and is inserted into the tapered 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 generates a squeezing force on the step rod 33. Thus, the step rod 33 can be prevented from loosening, and the first connecting frame 212 and the body 10 are ensured to be fastened.

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

[0055] According to this embodiment, when the step rod 33 continues to go deeper into the tapered channel 321, the tapered channel 321 generates a squeezing force on the step rod 33. At the same time, through the action of the long slot 321, the end of the support sleeve 32 away from the connecting sleeve 31 expands and closely contacts the inner wall of the connecting hole 2121, and generates a squeezing force on the support sleeve 32 through the inner wall of the connecting hole 2121, which can further press the step rod 33. In this way, through the cooperation of the step rod 33, the support sleeve 32 and the inner wall of the connecting hole 2121, the step rod 33 can be tightened more tightly.

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

[0057] According to this embodiment, the booster 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 booster handle 331 can 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 Fig. 9 As shown, in some embodiments, the supporting frame 41 has at least one 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] Exemplarily, 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 generate a squeezing force on the second connecting frame 213 to prevent the circulating water tank 21 from moving. In addition, the fastening assembly 30 and the bearing assembly 40 form a fastening mechanism, so that the fastening assembly 30 and the bearing assembly 40 cooperate with each other to fasten the circulating water tank 21, thereby realizing the quick disassembly and assembly of the circulating water tank 21.

[0061] Refer to the attached Figure 1 and 10As 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 deposition container includes an exhaust assembly 50, the exhaust assembly 50 includes an exhaust pipe 51, a sleeve 52 and a shunt pipe 53, the sleeve 52 is sleeved on the other end of the exhaust pipe 51, there are multiple shunt pipes 53, all of which are arranged at intervals along the circumference of the sleeve 52, and all of the shunt pipes 53 are connected to the sleeve 52, the shunt 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] Exemplarily, the connection hole 2121 is formed on the inner wall of the box body 11. The end of the water cooling channel 5322 close to the first connecting pipe 531 is used as the water inlet end, and the end of the water cooling sleeve 52 away from the first connecting pipe 531 is used as the drain end; the water inlet end and the drain pipe 22 are both connected to the water cooling system. An air suction device can be provided at one end of the exhaust pipe 51 located in the end cover 12.

[0063] According to this embodiment, when the optical fiber preform rod is subjected to the OVD process, a large amount of high-temperature gas is generated in the box 11. At this time, the high-temperature gas moves upward through the exhaust pipe 51, the sleeve 52 and the first connecting pipe 531 into the exhaust channel 5321, and performs heat exchange with the cooling water in the water-cooling channel 5322, so that the gas discharged from the exhaust channel 5321 can be low-temperature gas.

[0064] Refer to the attached Fig.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 metal or titanium-aluminum-vanadium alloy.

[0067] According to this embodiment, the high temperature region 101 can be provided with temperature resistance, corrosion resistance and fission resistance by using such a material.

[0068] The above are only preferred embodiments of the present invention and are 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 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, wherein a high temperature area (101) is provided between the first side wall and the second side wall; The water cooling assembly (20) comprises a circulating water tank (21), a water inlet pipe and a drain pipe (22); 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); 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); the first connecting frame (212) is arranged at the top of the shell (211); the second connecting frame (213) is arranged at the bottom of the shell (211); the first connecting frame (212) is detachably connected to the body (10); each plate of the second connecting frame (213) is provided with at least one through hole (1011); the body (10) is A connecting hole (2121) is provided in each of the through holes (1011); the deposition container comprises a fastening component (30) and a bearing 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 bearing component (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 inserted 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 grooves (321) arranged at intervals along the circumferential direction, and all of the long grooves (321) 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 bearing frame (41) has at least one pair of mounting surfaces (411), and the bearing assembly (40) includes a clamping unit (42), each of the mounting surfaces (411) is provided with the 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).

8. The deposition container for optical fiber preform according to claim 1, characterized in that: The body (10) comprises 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 comprises an exhaust assembly (50), wherein the exhaust assembly (50) comprises an exhaust pipe (51), a sleeve (52) and a shunt pipe (53), wherein the sleeve (52) is sleeved on the other end of the exhaust pipe (51), and the shunt pipe (53) is in plurality, and all the shunt pipes (53) are arranged at intervals along the circumference of the sleeve (52), and all the shunt pipes (53) are arranged at intervals along the circumference of the sleeve (52). 53) are connected to the sleeve (52), the shunt pipe (53) includes a first connecting pipe (531) and a second connecting pipe (532) which are 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 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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