Optical fiber end cap water-cooling packaging device

Abstract

The utility model discloses an optical fiber end cap water-cooling packaging device, which comprises a bayonet, a shell, a cylinder and a tail cover plate, the bayonet is positioned and connected at the head position of the shell, one side of the bayonet towards the tail is provided with an extension part, the extension part is internally provided with a first through hole communicated with an accommodating groove, and the shell is provided with a water inlet pipe and a water outlet pipe; the cylinder is positioned and installed in the cooling cavity of the shell, the cylinder is provided with a second through hole, the extension part of the bayonet extends into the second through hole for a certain distance, the tail cover plate is positioned and connected to the tail position of the shell, the tail cover plate is provided with an installation hole, and the inner diameters of the first through hole, the second through hole and the installation hole are all larger than the diameter of an optical fiber. And the tail part of the optical fiber penetrates through the first through hole of the bayonet, the second through hole of the column body and the mounting hole of the tail cover plate and then is sealed and cured on the mounting hole of the tail cover plate. According to the technical scheme, heat dissipation of the optical fiber and the end cap can be guaranteed, and the problem that the optical fiber and the end cap are polluted by cooling liquid impurities can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lasers, in particular to a water-cooling packaging device for an optical fiber end cap. Background Art

[0002] The statements in this section merely provide background technical information related to this application and do not necessarily constitute prior art.

[0003] As the output power of high-power fiber lasers continues to increase, the heat dissipation of the fiber output head has become a major factor restricting the further increase in fiber laser power. Currently, the conventional laser output head structure is to fuse the optical fiber and the optical fiber quartz end cap, and externally cool the quartz end cap and the optical fiber segment.

[0004] In a fiber laser output head and its manufacturing method disclosed in existing Chinese patent CN105527679A, a quartz end cap and a section of output optical fiber are encapsulated in a glass tube, and a coolant is used to dissipate heat from the glass tube. Although this solution has a certain heat dissipation effect, it does not directly dissipate heat from the quartz end cap and optical fiber, and the heat dissipation effect is not efficient.

[0005] Existing Chinese patent CN107591667A discloses a new type of high-efficiency heat dissipation high-power fiber laser output head. This head uses a metal structure to secure the optical fiber and quartz end caps, with coolant flowing through them. While this solution can directly dissipate heat from the quartz end caps and optical fiber, it places relatively high demands on the coolant. When the output optical fiber and the quartz end cap are fused together, the coating is stripped off. To facilitate the scattering of the cladding light for better heat dissipation, the sides of the quartz end caps are generally frosted. If the coolant contains impurities, especially large metal particles, these can easily accumulate in the frosted areas of the metal end caps and contaminate the uncoated areas of the optical fiber. Once these two areas are contaminated, heat can easily accumulate, damaging the end caps and optical fiber. Furthermore, impurities in the coolant can easily corrode the interior of the metal casing.

[0006] In view of this, how to solve the above problems existing in the heat dissipation structure of the existing optical fiber output head has become the subject to be studied and solved by the present invention. Utility Model Content

[0007] The utility model aims to provide a water-cooling packaging device for an optical fiber end cap.

[0008] To achieve the above objectives, the present invention proposes a water-cooled packaging device for an optical fiber end cap, which is used to dissipate heat from the optical fiber and the end cap. The optical fiber head and the end cap are fused together. The innovation of the device is as follows:

[0009] The water-cooling packaging device comprises a bayonet, a shell, a column, and a tail cover plate.

[0010] The bayonet is positioned and connected at the head position of the shell, and a receiving groove is provided on the side of the bayonet facing the head, and an extension portion is provided on the side facing the tail. The end cap is sealed and solidified in the receiving groove, and there is a gap between the tail of the end cap and the receiving groove. The extension portion is provided with a first through hole connected to the receiving groove.

[0011] The shell has a cooling cavity therein, a water inlet pipe is detachably provided on the shell at a position close to the end cap, and a water outlet pipe is detachably provided on the shell at a position away from the end cap, and filtering structures are provided on both the water inlet pipe and the water outlet pipe.

[0012] The column is positioned and installed in the cooling cavity of the shell. The column is provided with a second through hole, and the extension portion of the bayonet extends into the second through hole for a distance.

[0013] The tail cover is positioned and connected to the rear portion of the housing, and is provided with a mounting hole.

[0014] The inner diameters of the first through hole, the second through hole and the mounting hole are all larger than the diameter of the optical fiber. After the tail end of the optical fiber passes through the first through hole of the bayonet, the second through hole of the column and the mounting hole of the tail cover plate, it is sealed and solidified on the mounting hole of the tail cover plate.

[0015] The relevant contents of this utility model are explained as follows:

[0016] 1. In the above technical solution of the present invention, in order to solve the problems of low heat dissipation efficiency and high requirements for cooling liquid in the water-cooling packaging structure of the existing fiber laser output head, a fiber end cap water-cooling packaging device with good cooling effect and low requirements for cooling liquid is developed and designed. The water-cooling packaging device includes a bayonet, a shell, a column, and a tail cover. The end cap is fixed by the bayonet, and a first through hole for accommodating the optical fiber and for the entry of the cooling liquid is provided at the tail of the bayonet, so that the cooling liquid can cool the optical fiber and the end cap at the head without hindrance. The arrangement of the extension part is convenient. The structure is to extend a certain distance into the second through hole so that the optical fiber near the water inlet pipe will not be affected by the lateral force of the water flow, thereby avoiding damage to the optical fiber. Similarly, a column is also provided on the outside of the optical fiber. The column ensures that the optical fiber located in the cooling chamber is not impacted while allowing the coolant to fully contact the optical fiber at an appropriate flow rate, thereby quickly removing the heat generated by the optical fiber and the end cap. Filter structures are also provided on the water inlet pipe and the water outlet pipe of the water-cooled packaging device to filter impurities in the coolant and avoid contamination of the relevant areas on the optical fiber and the end cap by impurities. The above technical solution of the present utility model can not only ensure the heat dissipation of the optical fiber and the end cap, but also alleviate the problem of both being contaminated by impurities in the coolant.

[0017] 2. In the above technical solution, the first through hole, the second through hole, and the mounting hole are located on the same central axis of the optical fiber. This allows the optical fiber to be located on the central axis of each hole, making the structure more stable, achieving a good cooling effect, and preventing damage to the optical fiber.

[0018] 3. In the above technical solution, the extension portion is tubular, and the inner diameter of the first through-hole is 0.5-1 mm larger than the diameter of the optical fiber. This protects the optical fiber from the lateral force of the water flow and prevents a siphon effect from forming within the first through-hole of the extension portion, preventing the coolant from flowing in. The inner diameter of the first through-hole can be 0.5 mm, 0.75 mm, or 1 mm larger than the diameter of the optical fiber, for example.

[0019] 4. In the above technical solution, the column is a hollow cylinder, and the inner diameter of the second through-hole of the column is at least 2 mm larger than the diameter of the optical fiber. This further protects the optical fiber from the lateral impact of water and prevents breakage at the fusion splice. At the same time, the optical fiber is in contact with sufficient water to remove sufficient heat. The inner diameter of the second through-hole of the column is 2-3 mm larger than the diameter of the optical fiber, for example, 2 mm, 2.5 mm, 3 mm, etc.

[0020] 5. In the above technical solution, the inner diameter of the mounting hole of the tail cover is 0.5-1 mm larger than the diameter of the optical fiber. After the tail of the optical fiber passes through the mounting hole, it is cured and sealed to the tail cover using UV-curable adhesive or AB adhesive. The inner diameter of the mounting hole of the tail cover can be 0.5 mm, 0.75 mm, 1 mm, etc. larger than the diameter of the optical fiber.

[0021] 6. In the above technical solution, the front and rear ends of the column are each provided with a trumpet-shaped opening, and the areas corresponding to the water inlet and outlet pipes are located in the middle of the openings at both ends. The openings buffer the coolant flowing into the first and second through-holes, preventing the water flow from the water inlet and outlet pipes from impacting the optical fiber.

[0022] 7. In the above technical solution, the angle between the bell mouth and the column is 15° to 30°. If the angle is too small, the water flowing through the bell mouth will have a large lateral force impacting the optical fiber. If the angle is too large, the optical fiber will only be immersed in the coolant, and the flow velocity near the optical fiber will be low, affecting heat dissipation. After testing, 15° to 30° is the optimal angle, and other possible angles are 15°, 20°, 25°, 30°, etc.

[0023] 8. In the above technical solution, the water inlet pipe and the water outlet pipe are both quick-insert water pipes, and the filtering structure includes a first filter screen and a second filter screen. The first filter screen is provided on the side of the water inlet pipe and the water outlet pipe close to the pipe body, and the second filter screen is provided on the side of the water inlet pipe and the water outlet pipe away from the pipe body. The mesh number of the first filter screen is larger than that of the second filter screen.

[0024] 9. In the above technical solution, the bayonet is sealed to the shell by screws and rubber pads, and the rubber pads are placed at the notch of the bayonet.

[0025] 10. In the above technical solution, a sealing groove is engraved at the rear end of the shell, and a rubber pad is placed in the sealing groove to achieve sealing between the shell and the cover.

[0026] 11. In the above technical solution, the cylindrical body is provided with a plurality of positioning grooves on its circumference, and a plurality of sealing screws pass through corresponding positions on the circumference of the housing and abut against the positioning grooves, thereby firmly connecting the cylindrical body to the housing and protecting the optical fiber.

[0027] 12. In the above technical solution, descriptions such as "water cooling" and "water flow" do not limit the coolant used in the solution of this application to only "water". Other liquid coolants suitable for optical fiber cooling can also be used.

[0028] 13. In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to mechanical connection, direct connection, or indirect connection through an intermediate medium; they may refer to internal communication between two elements or interaction between two elements, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] 14. In the present invention, the terms "center", "head", "tail", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional assembly relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application. If the manual pressure relief valve is turned upside down or placed horizontally, the corresponding orientation should also be adjusted accordingly.

[0030] 15. In this application, the terms "first," "second," etc., are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0031] Due to the application of the above scheme, the utility model has the following advantages and effects compared with the prior art:

[0032] The above-mentioned solution of the present invention addresses the problems of insufficient heat dissipation effect and relatively high requirements for coolant in the water-cooling packaging structure of the existing fiber laser output head. A water-cooling packaging device for an optical fiber end cap with good cooling effect and low requirements for coolant has been developed and designed. The water-cooling packaging device includes a bayonet, a shell, a column, and a tail cover. The end cap is fixed by the bayonet, and a first through hole for accommodating the optical fiber and for allowing the coolant to enter is provided at the tail of the bayonet, so that the coolant can cool the optical fiber and the end cap located at the head without hindrance. The extension portion is arranged to extend into the second through hole for a distance so that the optical fiber near the water inlet pipe is not subjected to the lateral force of the water flow, thereby avoiding damage to the optical fiber. Similarly, a column is also provided on the outside of the optical fiber. The column ensures that the optical fiber located in the cooling chamber is not impacted while allowing the coolant to fully contact the optical fiber at an appropriate flow rate, thereby quickly removing the heat generated by the optical fiber and the end cap. In addition, a filtering structure is provided on the water inlet pipe and the water outlet pipe of the water-cooling packaging device to filter impurities in the coolant to prevent impurities from contaminating the relevant areas on the optical fiber and the end cap. The above technical solution of the present invention can not only ensure the heat dissipation of the optical fiber and the end cap, but also alleviate the problem of both being contaminated by impurities in the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a three-dimensional schematic diagram of the water-cooled packaging device for an optical fiber end cap according to an embodiment of the present utility model (viewing angle 1);

[0034] Figure 2 This is a three-dimensional schematic diagram of the water-cooled packaging device for an optical fiber end cap according to an embodiment of the present utility model (viewing angle 2);

[0035] Figure 3 This is a front view of the optical fiber end cap water-cooling packaging device according to an embodiment of the utility model;

[0036] Figure 4 for Figure 3 AA section view in the figure;

[0037] Figure 5 This is a three-dimensional schematic diagram of an embodiment of the utility model with part of the housing removed;

[0038] Figure 6 This is a front view of the embodiment of the utility model with part of the housing removed;

[0039] Figure 7 for Figure 6 BB section view in the figure;

[0040] Figure 8 for Figure 7 An enlarged schematic diagram in FIG.

[0041] Figure 9This is a three-dimensional schematic diagram of the water inlet pipe / water outlet pipe in the embodiment of the present utility model;

[0042] Figure 10 This is a cross-sectional view of the water inlet pipe / water outlet pipe in an embodiment of the present utility model.

[0043] The various parts of the above drawings are shown as follows:

[0044] 1. Bayonet;

[0045] 11. Accommodation groove; 111. Gap;

[0046] 12. extension portion; 121. first through hole;

[0047] 2. Shell; 21. Cooling chamber;

[0048] 3. Column;

[0049] 31. Second through hole; 32. Bell mouth; 33. Positioning groove;

[0050] 4. Tail cover;

[0051] 41. Mounting hole;

[0052] 51. Water inlet pipe; 52. Water outlet pipe;

[0053] 53. Filter structure; 531. First filter; 532. Second filter;

[0054] 8. Optical fiber; 9. End cap. DETAILED DESCRIPTION

[0055] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0056] The utility model aims to solve the problems of insufficient heat dissipation efficiency and high requirements for coolant in the water-cooled packaging structure of the existing fiber laser output head, and to provide a fiber end cap water-cooled packaging device with good cooling effect and low requirements for coolant.

[0057] Examples, such as Figures 1 to 10 As shown, an embodiment of the utility model discloses a water-cooled packaging device for an optical fiber end cap, which is used for heat dissipation of an optical fiber 8 and an end cap 9. The head of the optical fiber 8 is fused with the end cap 9. The water-cooled packaging device includes a bayonet 1, a shell 2, a column 3, and a tail cover plate 4.

[0058] The bayonet 1 is positioned and connected to the head of the shell 2. The bayonet 1 is provided with a receiving groove 11 on the side facing the head and an extension portion 12 on the side facing the tail. The end cap 9 is sealed and solidified in the receiving groove 11, and there is a gap 111 between the tail of the end cap 9 and the receiving groove 11. The extension portion 12 is provided with a first through hole 121 connected to the receiving groove 11.

[0059] The shell 2 has a cooling chamber 21 therein, and a water inlet pipe 51 is detachably provided on the shell 2 at a position close to the end cap 9, and a water outlet pipe 52 is detachably provided on the shell 2 at a position away from the end cap 9, and a filtering structure 53 is provided on both the water inlet pipe 51 and the water outlet pipe 52.

[0060] The column 3 is positioned and installed in the cooling cavity 21 of the housing 2 . The column 3 is provided with a second through hole 31 . The extension portion 12 of the bayonet 1 extends into the second through hole 31 for a distance.

[0061] The tail cover 4 is positioned and connected to the rear portion of the housing 2 , and is provided with a mounting hole 41 .

[0062] The inner diameters of the first through hole 121, the second through hole 31, and the mounting hole 41 are all larger than the diameter of the optical fiber 8. After the tail direction of the optical fiber 8 passes through the first through hole 121 of the bayonet 1, the second through hole 31 of the column 3, and the mounting hole 41 of the tail cover plate 4, it is sealed and solidified on the mounting hole 41 of the tail cover plate 4.

[0063] Through the implementation of the embodiment of the present invention, the end cap 9 is fixed by the bayonet 1, and a first through hole 121 for accommodating an optical fiber and for allowing the entry of cooling liquid is provided at the rear end of the bayonet 1. This allows the cooling liquid to cool the optical fiber and the end cap 9 at the head without obstruction. The extension portion 12 is arranged to extend a distance into the second through hole 31, so that the optical fiber near the water inlet pipe 51 is not subjected to the lateral force of the water flow, thereby preventing damage to the optical fiber 8. Similarly, a column 3 is provided outside the optical fiber 8. The column 3 protects the optical fiber in the cooling chamber 21 from impact while allowing the cooling liquid to fully and sufficiently contact the optical fiber 8 at an appropriate flow rate, thereby quickly removing heat generated by the optical fiber and the end cap 9. Filter structures 53 are also provided on the water inlet pipe 51 and the water outlet pipe 52 of the water-cooling packaging device to filter impurities in the cooling liquid and prevent impurities from contaminating the relevant areas of the optical fiber 8 and the end cap 9. This ensures heat dissipation of the optical fiber 8 and the end cap 9 while alleviating the problem of contamination of both by coolant impurities.

[0064] In an embodiment of the present invention, the first through hole 121, the second through hole 31, and the mounting hole 41 are located on the same central axis of the optical fiber 8. This allows the optical fiber 8 to be located on the central axis of each hole, making the structure more stable and achieving a good cooling effect without damaging the optical fiber 8.

[0065] In an embodiment of the present invention, the extension portion 12 is a tubular structure, and the inner diameter of the first through hole 121 is 1 mm larger than the diameter of the optical fiber 8. This protects the optical fiber 8 from the lateral force of the water flow and prevents the formation of a siphon effect in the first through hole 121 of the extension portion 12, which prevents the coolant from flowing in.

[0066] In the embodiment of the present invention, the column 3 is a hollow cylinder, and the inner diameter of the second through hole 31 of the column 3 is 2 mm or larger than the diameter of the optical fiber 8. This further protects the optical fiber 8 from the lateral impact of water and prevents the fusion splice from breaking. At the same time, the optical fiber 8 is in contact with sufficient water to remove sufficient heat.

[0067] In an embodiment of the present invention, the inner diameter of the mounting hole 41 of the tail cover plate 4 is 0.5 mm larger than the diameter of the optical fiber 8. After the tail of the optical fiber 8 passes through the mounting hole 41, it is cured and sealed with the tail cover plate 4 by UV curing glue or AB glue.

[0068] In the embodiment of the present invention, the front and rear ends of the column 3 are each provided with a trumpet-shaped opening 32. The areas corresponding to the water inlet pipe 51 and the water outlet pipe 52 are located in the middle of the openings 32 at both ends. The openings 32 provide a buffer for the coolant flowing into the first through hole 121 and the second through hole 31, preventing the water flow from the water inlet pipe 51 and the water outlet pipe 52 from impacting the optical fiber 8.

[0069] Furthermore, the angle between the bell mouth 32 and the column 3 is 15° to 30°. If the angle is too small, the water flowing through the bell mouth 32 will have a large lateral force impacting the optical fiber 8. If the angle is too large, the optical fiber 8 is only immersed in the coolant, and the flow velocity near the optical fiber 8 is low, which affects heat dissipation. After testing, 15° to 30° is the best, and other angles can be 15°, 20°, 25°, 30°, etc.

[0070] In an embodiment of the present utility model, the water inlet pipe 51 and the water outlet pipe 52 both adopt quick-insert water pipes, and the filtering structure 53 includes a first filter screen 531 and a second filter screen 532. The first filter screen 531 is provided on the side of the water inlet pipe 51 and the water outlet pipe 52 close to the pipe body, and the second filter screen 532 is provided on the side of the water inlet pipe 51 and the water outlet pipe 52 away from the pipe body. The mesh number of the first filter screen 531 is larger than the mesh number of the second filter screen 532.

[0071] In the embodiment of the present invention, the bayonet 1 is sealed to the housing 2 by screws and rubber pads, and the rubber pads are placed at the notch of the bayonet 1. A sealing groove is engraved at the rear end of the housing 2, and a rubber pad is placed in the sealing groove to achieve sealing between the housing 2 and the cover.

[0072] In the embodiment of the present invention, the column 3 is provided with a plurality of positioning grooves 33 on its circumference. A plurality of sealing screws pass through corresponding positions on the circumference of the housing 2 and abut against the positioning grooves 33. This ensures that the column 3 is firmly fixed to the housing 2 and protects the optical fiber 8.

[0073] Next, the present invention will be described in detail with reference to a detailed embodiment.

[0074] The optical fiber end cap water-cooling packaging device involved in the detailed embodiment of the present utility model includes a bayonet 1 , a shell 2 , a column 3 , and a tail cover plate 4 .

[0075] In this detailed embodiment, the bayonet 1 is positioned and connected to the head position of the shell 2, and the bayonet 1 is sealed to the shell 2 by screws and rubber pads, and the rubber pads are placed at the notch of the bayonet 1; the bayonet 1 is provided with a accommodating groove 11 on the side facing the head, and an extension portion 12 on the side facing the tail, the end cap 9 is sealed and solidified in the accommodating groove 11, and there is a gap 111 between the tail of the end cap 9 and the accommodating groove 11, and a first through hole 121 connected to the accommodating groove 11 is provided in the extension portion 12, and the extension portion 12 is a tubular structure, and the inner diameter of the first through hole 121 is 1 mm larger than the diameter of the optical fiber 8.

[0076] In this detailed embodiment, the housing 2 has a cooling chamber 21 therein. A water inlet pipe 51 is detachably provided on the housing 2 at a position close to the end cap 9. A water outlet pipe 52 is detachably provided on the housing 2 at a position away from the end cap 9. A filtering structure 53 is provided on both the water inlet pipe 51 and the water outlet pipe 52. The water inlet pipe 51 and the water outlet pipe 52 are both quick-plug water pipes. The filtering structure 53 includes a first filter screen 531 and a second filter screen 532. The first filter screen 531 is provided on the side of the water inlet pipe 51 and the water outlet pipe 52 close to the pipe body, and the second filter screen 532 is provided on the side of the water inlet pipe 51 and the water outlet pipe 52 away from the pipe body. The mesh size of the first filter screen 531 is larger than the mesh size of the second filter screen 532.

[0077] In this detailed embodiment, the column 3 is positioned and installed in the cooling cavity 21 of the shell 2. The column 3 is provided with a second through hole 31, and the extension portion 12 of the bayonet 1 extends into the second through hole 31 for a distance. The inner diameter of the second through hole 31 of the column 3 is 2 mm or more larger than the diameter of the optical fiber 8. The front and rear ends of the column 3 are both provided with trumpet-shaped bell mouths 32, and the areas corresponding to the water inlet pipe 51 and the water outlet pipe 52 are located in the middle of the bell mouths 32 at both ends. The angle between the bell mouth 32 and the column 3 is 15° to 30°. A plurality of positioning grooves 33 are provided on the circumference of the column 3, and a plurality of sealing screws pass through the corresponding positions on the circumference of the shell 2 and abut against the positioning grooves 33.

[0078] In this detailed embodiment, the tail cover plate 4 is positioned and connected to the tail position of the shell 2, and the tail cover plate 4 is provided with a mounting hole 41; the inner diameter of the mounting hole 41 of the tail cover plate 4 is 0.5 mm larger than the diameter of the optical fiber 8, and a sealing groove is engraved at the tail end of the shell 2, and a rubber pad is placed in the sealing groove to achieve sealing between the shell 2 and the cover plate. After the tail of the optical fiber 8 passes through the mounting hole 41, it is cured and sealed with the tail cover plate 4 by UV curing glue or AB glue.

[0079] In this detailed embodiment, the inner diameters of the first through hole 121, the second through hole 31, and the mounting hole 41 are all larger than the diameter of the optical fiber 8. After the tail direction of the optical fiber 8 passes through the first through hole 121 of the bayonet 1, the second through hole 31 of the column 3, and the mounting hole 41 of the tail cover plate 4, it is sealed and solidified on the mounting hole 41 of the tail cover plate 4. The outer diameter of the extension portion 12 is smaller than the inner diameter of the second through hole 31.

[0080] Specifically, after stripping part of the coating layer of the optical fiber 8, it is fused with the quartz end cap 9, and the quartz end cap 9 is fixed to the thicker end of the bayonet 1 and sealed and cured with ultraviolet curing glue. The thinner end of the bayonet 1 is extended to form an extension part 12. The inner diameter of the first through hole 121 of the extension part 12 is 1mm larger than the diameter of the optical fiber 8, protecting the optical fiber 8 from the lateral force of the water flow and avoiding the formation of a siphon effect in the tube of the extension part 12, which prevents water from flowing in; the bayonet 1 is sealed to the housing 2 by screws and rubber pads, and the rubber pads are placed at the notch of the bayonet 1; the trumpet-shaped column is 3 is inserted into the housing 2 and fixed by 8 sealing screws. The minimum inner diameter of the column 3 is 2mm or more larger than the optical fiber 8 to protect the optical fiber 8 from the lateral impact of water and prevent the fusion point from breaking. At the same time, the optical fiber 8 is in contact with sufficient water to take away the heat. The angle between the bell mouth 32 and the column 3 is between 15° and 30°. If the angle is too small, after the water flows through the bell mouth 32, there will be a large lateral force impacting the optical fiber 8. If the angle is too large, the optical fiber 8 is only immersed in water, and the flow velocity near the optical fiber 8 is small, which affects the heat dissipation. After testing, 15° to 30° is the best. The tail end of the shell 2 is fixed by a fastening screw through the tail cover plate 4, wherein a sealing groove is engraved at the tail end of the shell 2, and a rubber pad is placed in the sealing groove to achieve sealing between the shell 2 and the tail cover plate 4; the tail cover plate 4 has a rounded mounting hole 41, the diameter of which is 0.5m larger than the diameter of the optical fiber 8, and the optical fiber 8 passes through the mounting hole 41. The mounting hole 41 can achieve sealing between the optical fiber 8 and the tail cover plate 4 by using UV curing glue or AB glue; the water inlet pipe 51 (quick-plug water pipe) near the side of the quartz end cap 9 is the water inlet, and a fine filter screen (first filter screen 531) is built-in at the bottom of the thread of the quick-plug water pipe, and a slightly sparse filter screen (second filter screen 532) is placed at the 90° bend of the quick-plug water pipe. The two filter screens filter the cooling water. Considering the flow rate, the two filter screens have different densities. The first filter screen 531 close to the shell 2 is denser and can filter smaller particles, while the second filter screen 532 away from the shell 2 is sparser. The outlet pipe 52 (quick-plug water pipe) away from the quartz end cap 9 serves as the water outlet. Two filters are installed, similar to the water inlet. A fine filter (first filter 531) is placed at the bottom of the quick-plug water pipe threads, and a slightly looser filter (second filter 532) is placed at the 90-degree bend of the quick-plug water pipe 13. After water is passed through the quick-plug water pipe threads, while cooling, the water flow rate is monitored. If the filter is clogged with impurities, the flow rate will decrease, and a flow rate alarm threshold will be set. When the flow alarm is triggered, the inlet and outlet ports can be swapped to flush the filter, simultaneously flushing out any contaminated water in the housing 2. After flushing, the filter can be removed and cleaned. This ensures heat dissipation from the optical fiber 8 and quartz end cap 9 while also alleviating the problem of contamination from coolant impurities.

[0081] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A water-cooled packaging device for an optical fiber end cap, used for dissipating heat from an optical fiber (8) and an end cap (9), wherein the head of the optical fiber (8) and the end cap (9) are fused together, characterized in that: The water-cooling packaging device comprises a bayonet (1), a shell (2), a column (3), and a tail cover plate (4); The bayonet (1) is positioned and connected to the head of the housing (2); a side of the bayonet (1) facing the head is provided with a receiving groove (11); a side facing the tail is provided with an extension portion (12); the end cap (9) is sealed and solidified in the receiving groove (11); a gap (111) is formed between the tail of the end cap (9) and the receiving groove (11); and a first through hole (121) communicating with the receiving groove (11) is provided in the extension portion (12); The housing (2) has a cooling cavity (21), a water inlet pipe (51) is detachably provided on the housing (2) at a position close to the end cap (9), and a water outlet pipe (52) is detachably provided on the housing (2) at a position away from the end cap (9), and a filtering structure (53) is provided on both the water inlet pipe (51) and the water outlet pipe (52); The column (3) is positioned and installed in the cooling cavity (21) of the housing (2); the column (3) is provided with a second through hole (31); the extension portion (12) of the bayonet (1) extends into the second through hole (31) for a distance; The tail cover plate (4) is positioned and connected to the rear portion of the housing (2), and the tail cover plate (4) is provided with a mounting hole (41); The inner diameters of the first through hole (121), the second through hole (31), and the mounting hole (41) are all larger than the diameter of the optical fiber (8). After the tail of the optical fiber (8) passes through the first through hole (121) of the bayonet (1), the second through hole (31) of the column (3), and the mounting hole (41) of the tail cover (4), it is sealed and cured on the mounting hole (41) of the tail cover (4).

2. The optical fiber end cap water-cooling packaging device according to claim 1, characterized in that: The first through hole (121), the second through hole (31), and the mounting hole (41) are located on the same central axis along which the optical fiber (8) extends.

3. The optical fiber end cap water-cooling packaging device according to claim 1, characterized in that: The extension portion (12) is a tubular structure, and the inner diameter of the first through hole (121) is 0.5-1 mm larger than the diameter of the optical fiber (8).

4. The optical fiber end cap water-cooling packaging device according to claim 1, characterized in that: The column (3) is in the shape of a hollow cylinder, and the inner diameter of the second through hole (31) of the column (3) is 2 mm or more larger than the diameter of the optical fiber (8).

5. The optical fiber end cap water-cooling packaging device according to claim 1, characterized in that: The inner diameter of the mounting hole (41) of the tail cover plate (4) is 0.5-1 mm larger than the diameter of the optical fiber (8); the tail of the optical fiber (8) passes through the mounting hole (41) and is cured and sealed with the tail cover plate (4) by ultraviolet curing glue or AB glue.

6. The optical fiber end cap water-cooling packaging device according to claim 1, characterized in that: The front and rear ends of the column (3) are both provided with trumpet-shaped bell mouths (32), and the areas corresponding to the water inlet pipe (51) and the water outlet pipe (52) are located toward the middle of the bell mouths (32) at both ends.

7. The optical fiber end cap water-cooling packaging device according to claim 6, characterized in that: The angle between the bell mouth (32) and the column (3) is 15° to 30°.

8. The optical fiber end cap water-cooling packaging device according to claim 1, characterized in that: The water inlet pipe (51) and the water outlet pipe (52) are both quick-insert water pipes. The filtering structure (53) comprises a first filter screen (531) and a second filter screen (532). The first filter screen (531) is provided on the side of the water inlet pipe (51) and the water outlet pipe (52) close to the shell (2), and the second filter screen (532) is provided on the side of the water inlet pipe (51) and the water outlet pipe (52) away from the shell (2). The mesh number of the first filter screen (531) is larger than the mesh number of the second filter screen (532).

9. The optical fiber end cap water-cooling packaging device according to claim 1, characterized in that: The bayonet (1) is sealed to the housing (2) by means of screws and a rubber pad, and the rubber pad is placed at the notch of the bayonet (1); a sealing groove is engraved at the rear end of the housing (2), and a rubber pad is placed in the sealing groove to achieve sealing between the housing (2) and the cover plate.

10. The optical fiber end cap water-cooling packaging device according to claim 1, characterized in that: A plurality of positioning grooves (33) are provided on the circumferential side of the column (3), and a plurality of sealing screws pass through corresponding positions on the circumferential side of the housing (2) and abut against the positioning grooves (33).

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