Cladding light stripper

Abstract

The invention discloses a cladding light stripper, and relates to the technical field of optical fiber lasers, the cladding light stripper comprises a glass tube used for stripping cladding residual light in an optical fiber and a shell, an installation space used for installing the glass tube is arranged in the shell, the glass tube is arranged in the installation space, and the two ends of the glass tube are exposed; a cooling flow channel for circulating cooling liquid is arranged around the mounting space, a water inlet and a water outlet which are communicated with the cooling flow channel are formed in the shell, and a partition part which prevents the cooling flow channel and the mounting space from being communicated and has heat conduction capability is arranged between the cooling flow channel and the mounting space; according to the invention, the cooling efficiency of the cladding light stripper is improved by using a cooling flow channel active cooling mode, and the core structure of the optical fiber is prevented from being damaged by relatively high heat and the reliability and stability of the optical fiber laser are prevented from being influenced.

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber lasers, and in particular to a cladding light stripper. Background Art

[0002] During the manufacture and use of fiber lasers, the cladding material of the optical fiber needs to be removed to expose the core part of the optical fiber. This process is called cladding light stripping, and the cladding light stripper is a device that performs optical fiber cladding light stripping in a fiber laser.

[0003] Traditional cladding light strippers mainly rely on their own heat-conducting materials to dissipate heat, and the materials generally used are aluminum or copper. However, in actual light stripping, the cooling efficiency is low if it only relies on the material's own heat dissipation. Higher temperatures may damage the core structure of the optical fiber and affect the reliability and stability of the fiber laser. Therefore, people are in urgent need of a cladding light stripper with high cooling efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a cladding light stripper to solve the problems existing in the above-mentioned prior art, utilize the coolant in the cooling channel to reduce the temperature, improve the cooling efficiency, and ensure the reliability and stability of the fiber laser.

[0005] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a cladding light stripper, comprising a glass tube for stripping residual cladding light in an optical fiber and a shell, wherein an installation space for installing the glass tube is arranged inside the shell, the glass tube is arranged in the installation space, and both ends of the glass tube are exposed, a cooling channel for circulating a cooling liquid is arranged around the installation space, a water inlet and a water outlet connected to the cooling channel are arranged on the shell, and a partition part with heat conductivity is arranged between the cooling channel and the installation space to prevent the two from being connected.

[0006] Preferably, the outer shell includes a cover body and a substrate, a first flow channel is arranged in the cover body along the axial direction of the glass tube, a second flow channel is arranged on the substrate along the axial direction of the glass tube, the cover body is snap-fitted on the substrate, the first flow channel and the second flow channel are assembled to form the cooling flow channel, the first flow channel is connected to the water inlet, and the second flow channel is connected to the water outlet; a first groove body is arranged at the bottom of the cover body, a second groove body is arranged at a position of the substrate corresponding to the first groove body, the first groove body and the second groove body are assembled to form the installation space, and the groove walls of the first groove body and the second groove body are the partition part.

[0007] Preferably, the cover body includes a cover plate and a guide plate, the cover plate is bolted to the top of the guide plate, the guide plate is welded to the top of the base plate, and the water inlet is arranged on the cover plate. Preferably, along the axial direction of the glass tube, a partition block for dividing the first flow channel into two water inlet flow channels is arranged in the middle of the first flow channel, and two water inlets are arranged on the cover body, and the two water inlets are connected to the water inlet flow channels respectively.

[0008] Preferably, the first flow channel includes a water inlet area, a diversion area and a circulation hole which are connected in sequence from top to bottom, the water inlet area is connected to the water inlet, the two diversion areas are respectively arranged on both sides of the water inlet area, one end of the circulation hole is connected to the diversion area, and the other end is connected to the second flow channel.

[0009] Preferably, a plurality of the flow holes are evenly arranged at the bottom of the diversion area.

[0010] Preferably, the second flow channel includes a water receiving area and a water outlet area, the two water receiving areas are respectively arranged on both sides of the water outlet area, one end of the water receiving area away from the water outlet area is connected to the flow hole, and the water outlets are arranged on both sides of the water outlet area.

[0011] Preferably, a flow-disturbing part for disturbing flow is arranged on the wall surface of the partition part close to the cooling flow channel. Preferably, the housing is a heat-conducting housing, and temperature sensors are arranged on both ends of the housing corresponding to the glass tube.

[0012] Preferably, the water inlet is connected to a liquid supply device, and the liquid supply device and the temperature sensor are both electrically connected to a control system.

[0013] Compared with the prior art, the present invention mainly achieves the following technical effects:

[0014] The cooling channel is used to actively cool down the device to improve the cooling efficiency of the cladding light stripper, thereby preventing high heat from damaging the core structure of the optical fiber and affecting the reliability and stability of the fiber laser.

[0015] Compared with the prior art, other solutions of the present invention have achieved the following technical effects:

[0016] The two water inlet channels correspond to the front and rear ends of the glass tube, respectively, which can not only reduce the risk of blockage, but also the two water inlets can be connected to a liquid supply device respectively, which can increase the flow rate and supply different flow rates to adapt to the characteristics of the front half of the glass tube stripping more stray light and more heat, and the back half stripping less stray light and less heat, so as to achieve targeted cooling and energy saving. The setting of the flow hole can increase the flow rate of the coolant and improve the heat exchange effect.

[0017] The setting of the spoiler can not only cause disturbance to the coolant, but also increase the heat exchange area, thereby effectively improving the heat exchange effect.

[0018] The control system can adjust the power of the liquid supply equipment in real time according to the temperature detected by the temperature sensor, and then adjust the flow rate of the coolant, which improves the degree of automation and helps save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 Schematic diagram of the structure of the cladding light stripper in an embodiment of the present invention;

[0021] Figure 2 It is a front view of the cladding light stripper in an embodiment of the present invention;

[0022] Figure 3 A top view of a cladding light stripper according to an embodiment of the present invention;

[0023] Figure 4 It is a left side view of the cladding light stripper in the embodiment of the present invention;

[0024] Figure 5 for Figure 3 Sectional view at AA in the middle;

[0025] Figure 6 This is a schematic diagram of the structure of the cladding light stripper after the cover plate is hidden in an embodiment of the present invention;

[0026] Figure 7 The present invention is a schematic diagram of the structure of the cladding light stripper after the cover plate and the guide plate are hidden in the embodiment of the present invention; wherein, 1, glass tube; 2, outer shell; 3, installation space; 4, hexagonal plug; 5, water inlet; 6, water outlet; 7, partition; 8, cover; 9, guide plate; 10, substrate; 11, first flow channel; 12, second flow channel; 13, first trough body; 14, second trough body; 15, sealing ring; 16, partition block; 17, water inlet area; 18, diversion area; 19, flow hole; 20, water receiving area; 21, water outlet area; 22, spoiler; 23, stepped surface; 24, temperature sensor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a cladding light stripper to solve the problems existing in the prior art, utilize the coolant in the cooling channel to reduce the temperature, improve the cooling efficiency, and ensure the reliability and stability of the fiber laser.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Please refer to Figures 1 to 7 As shown, a cladding light stripper is provided, comprising a glass tube 1 for stripping residual cladding light in an optical fiber and a shell 2, wherein an installation space 3 for installing the glass tube 1 is provided inside the shell 2, the glass tube 1 is arranged in the installation space 3, and both ends of the glass tube 1 are exposed. Specifically, a mounting through hole is provided in the middle of the shell 2 for inserting the glass tube 1, and the mounting through hole is the installation space 3. Both ends of the glass tube 1 are mounted on the shell through a hexagonal plug 4, and an exposed hole for connecting the glass tube 1 with the outside is provided in the middle of the hexagonal plug 4, and the end of the glass tube 1 is located in the exposed hole. A cooling channel for circulating a cooling liquid is provided around the installation space 3, and a water inlet 5 and a water outlet 6 connected to the cooling channel are provided on the shell 2. A partition 7 is provided between the cooling channel and the installation space 3, and the partition 7 is used to prevent the cooling channel from connecting with the installation space 3 and has heat conduction capability; the cooling efficiency of the cladding light stripper is improved by actively cooling the cooling channel, and high heat is prevented from damaging the core structure of the optical fiber and affecting the reliability and stability of the optical fiber laser.

[0031] The partition part 7 is arranged close to the glass tube 1 to avoid being spaced apart from the glass tube 1 , thereby reducing the risk of the glass tube 1 being broken due to thermal expansion and contraction.

[0032] The partition part 7 can be made of a material with good thermal conductivity such as aluminum, aluminum alloy or copper. Of course, in order to facilitate production and improve heat dissipation, the entire shell 2 can be made of a material with good thermal conductivity such as aluminum, aluminum alloy or copper.

[0033] The cooling channel is preferably disposed in a circumferential manner around the installation space 3 and along the axis of the glass tube 1 , and its length should cover the glass tube 1 in the housing 2 as much as possible.

[0034] The specific structure of the cooling channel and the installation space 3 in this embodiment is as follows: the outer shell 2 includes a cover body and a substrate 10, a first strip-shaped channel 11 is arranged in the cover body along the axial direction of the glass tube 1, and a second strip-shaped channel 12 is arranged on the substrate 10 along the axial direction of the glass tube 1, the cover body is buckled and arranged on the substrate 10, the first channel 11 and the second channel 12 are assembled to form a cooling channel, the first channel 11 is connected to the water inlet 5, and the second channel 12 is connected to the water outlet 6; a first groove body 13 is arranged at the bottom of the cover body, and a second groove body 14 is arranged at a position corresponding to the first groove body 13 of the substrate 10, the first groove body 13 and the second groove body 14 are assembled to form an installation space 3, that is, an installation through hole for installing the glass tube 1, and the groove walls of the first groove body 13 and the second groove body 14 are the partition part 7. The cover body includes a cover plate 8 and a guide plate 9. The cover plate 8 is bolted to the top of the guide plate 9. The cover plate 8 and the guide plate 9 are buckled together to form a first flow channel 11. The first flow channel 11 can be cleaned by removing the cover plate 8. The guide plate 9 is welded and set on the top of the base plate 10 to improve the structural strength. The water inlet 5 is set on the cover plate 8.

[0035] A sealing ring 15 may be provided on the buckled end surface between the guide plate 9 and the base plate 10, and a sealing ring 15 may be provided on the buckled end surface between the guide plate 9 and the cover plate 8 to improve the sealing effect.

[0036] Along the axial direction of the glass tube 1, a partition block 16 for dividing the first flow channel 11 into two water inlet flow channels is provided in the middle of the first flow channel 11. The partition block 16 can be subsequently welded to the guide plate 9, or it can be integrally formed when the guide plate 9 is manufactured. The end surface of the partition block 16 away from the guide plate 9 is sealed and connected to the cover plate 8. A sealing strip can be provided on the top of the partition block 16 to achieve a sealed connection, or a waterproof glue can be used to cover the gap to achieve a sealed connection. Two water inlets 5 are provided on the cover body, and the two water inlets 5 are respectively connected to the water inlet flow channels, and the two water inlet flow channels correspond to The front end and the rear end of the glass tube 1 can not only reduce the risk of blockage, but also allow the other to be in a normal flow state when one water inlet channel is blocked, thereby avoiding the situation where the equipment cannot be used normally after being blocked when one channel is set. Moreover, the two water inlets 5 can be connected to a liquid supply device respectively, which can increase the flow rate while supplying different flow rates to adapt to the characteristics of the front half of the glass tube 1 that removes more stray light and more heat, while the rear half removes less stray light and less heat, thereby achieving targeted cooling and energy saving.

[0037] In this embodiment, the first flow channel 11 includes a water inlet area 17, a diverter area 18 and a flow hole 19 which are connected in sequence from top to bottom. The water inlet area 17 is connected to the water inlet 5. The two diverter areas 18 are respectively arranged on both sides of the water inlet area 17. One end of the flow hole 19 is connected to the diverter area 18, and the other end is connected to the second flow channel 12. The setting of the flow hole 19 can increase the flow rate of the coolant and improve the heat exchange effect.

[0038] In order to improve the uniformity of the coolant flow, a plurality of flow holes 19 are evenly arranged at the bottom of the flow distribution area 18. In order to cooperate with the first flow channel 11 to form a surrounding cooling flow channel, the second flow channel 12 includes a water receiving area 20 and a water outlet area 21. The two water receiving areas 20 are respectively arranged on both sides of the water outlet area 21. One end of the water receiving area 20 away from the water outlet area 21 is connected to the flow hole 19, and water outlets 6 are arranged on both sides of the water outlet area 21.

[0039] In order to improve the cooling effect, in this embodiment, the water receiving area 20 extends upward into the guide plate 9 , shortening the length of the flow hole 19 to form a larger area to wrap the partition part 7 .

[0040] In this embodiment, the water inlet area 17 , the diversion area 18 , the water receiving area 20 and the water outlet area 21 are all strip-shaped structures and are arranged along the axial direction of the glass tube 1 .

[0041] In another embodiment, the cross-sections of the first flow channel 11 and the second flow channel 12 perpendicular to the axis of the glass tube 1 are both U-shaped, and the two ends of the U-shaped structure of the first flow channel 11 are connected with the two ends of the U-shaped structure of the second flow channel 12 to form a surrounding cooling flow channel.

[0042] A spoiler 22 is provided on the wall surface of the partition portion 7 close to the cooling channel. The spoiler 22 may be a plate-like structure or a block-like structure. The spoiler 22 may be integrally formed on the partition portion 7. The setting of the spoiler 22 not only can cause disturbances in the coolant, but also increases the heat exchange area, thereby effectively improving the heat exchange effect.

[0043] In this embodiment, a spoiler 22 is provided only on a portion of the groove wall of the second groove body 14 for forming the partition portion 7 corresponding to the water receiving area 20. The spoiler 22 is a square structure, and a plurality of spoilers 22 are evenly distributed on the wall surface.

[0044] In this embodiment, the partition portion 7 has a stepped surface 23 on the outer wall surface corresponding to the water receiving area 20, and the tread of the stepped surface 23 is arranged upward. The stepped surface 23 is mainly formed by the first groove body 13 and the second groove body 14 being buckled together, that is, the distance between the part of the groove wall outer wall of the first groove body 13 corresponding to the water receiving area 20 and the glass tube 1 is smaller than the distance between the part of the groove wall outer wall of the second groove body 14 corresponding to the water receiving area 20 and the glass tube 1; the existence of the stepped surface 23 can also play a certain turbulent effect.

[0045] When the entire shell 2 is made of heat-conducting material, temperature sensors 24 are provided at both ends of the shell 2 corresponding to the glass tube 1. The temperature sensors 24 can measure the temperature of the front half and the rear half of the glass tube 1 of the current overall device in real time.

[0046] In this embodiment, the water outlet 6 is arranged in the middle of the substrate 10, so that the fluid flows from both ends to the middle in the base. At this time, the temperature sensors 24 arranged at both ends can more accurately measure the temperature changes of the front and rear halves. In this embodiment, the water inlet 5 is connected to the liquid supply device, the liquid supply device is a water tank, a refrigeration system and a flow pump, the flow pump is placed in the water tank, the refrigeration system is water refrigeration in the water tank, the refrigeration system is mainly compressor refrigeration or semiconductor refrigeration, the water at the water outlet 6 flows back to the water tank, the liquid supply device and the temperature sensor 24 are both electrically connected to the control system, the control system can adjust the power of the liquid supply device in real time according to the temperature detected by the temperature sensor 24, and then adjust the flow rate of the coolant, when the temperature is higher than the set range value, the cooling flow rate is accelerated, when the temperature is lower than the set range value, the flow rate of the coolant is reduced, while improving the degree of automation, it is beneficial to save energy.

[0047] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0048] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A cladding light stripper, characterized in that: It comprises a glass tube for stripping residual light from the cladding of an optical fiber and a shell, wherein an installation space for installing the glass tube is arranged inside the shell, the glass tube is arranged in the installation space, and both ends of the glass tube are exposed, a cooling channel for circulating a cooling liquid is arranged around the installation space, a water inlet and a water outlet connected to the cooling channel are arranged on the shell, and a partition part with heat conduction capability is arranged between the cooling channel and the installation space to prevent the two from being connected.

2. The cladding light stripper according to claim 1, characterized in that: The outer shell includes a cover body and a substrate, a first flow channel is arranged in the cover body along the axial direction of the glass tube, a second flow channel is arranged on the substrate along the axial direction of the glass tube, the cover body is buckled and arranged on the substrate, the first flow channel and the second flow channel are assembled to form the cooling flow channel, the first flow channel is connected to the water inlet, and the second flow channel is connected to the water outlet; a first groove body is arranged at the bottom of the cover body, a second groove body is arranged at a position of the substrate corresponding to the first groove body, the first groove body and the second groove body are assembled to form the installation space, and the groove walls of the first groove body and the second groove body are the partition part.

3. The cladding light stripper according to claim 2, characterized in that: The cover body comprises a cover plate and a guide plate, the cover plate is bolted to the top of the guide plate, the guide plate is welded and arranged on the top of the base plate, and the water inlet is arranged on the cover plate.

4. The cladding light stripper according to claim 2, characterized in that: Along the axial direction of the glass tube, a partition block for dividing the first flow channel into two water inlet flow channels is arranged in the middle of the first flow channel, and two water inlets are arranged on the cover body, and the two water inlets are connected to the water inlet flow channels respectively.

5. The cladding light stripper according to claim 2, characterized in that: The first flow channel includes a water inlet area, a diversion area and a circulation hole which are connected in sequence from top to bottom. The water inlet area is connected to the water inlet. The two diversion areas are respectively arranged on both sides of the water inlet area. One end of the circulation hole is connected to the diversion area, and the other end is connected to the second flow channel.

6. The cladding light stripper according to claim 5, characterized in that: A plurality of flow holes are evenly arranged at the bottom of the diversion area.

7. The cladding light stripper according to claim 5, characterized in that: The second flow channel includes a water receiving area and a water outlet area. The two water receiving areas are respectively arranged on both sides of the water outlet area. One end of the water receiving area away from the water outlet area is connected to the flow hole. The water outlets are arranged on both sides of the water outlet area.

8. The cladding light stripper according to claim 1, characterized in that: A flow disturbing portion for disturbing flow is arranged on the wall surface of the partition portion close to the cooling flow channel.

9. The cladding light stripper according to claim 1, characterized in that: The shell is a heat-conducting shell, and temperature sensors are arranged on both ends of the shell corresponding to the glass tube.

10. The cladding light stripper according to claim 9, characterized in that: The water inlet is communicated with a liquid supply device, and the liquid supply device and the temperature sensor are both electrically connected to a control system.

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