Cladding light striper

Abstract

The application discloses a cladding light stripper, and relates to the technical field of fiber lasers, which comprises a glass tube for stripping residual light in the cladding of an optical fiber and a shell, the shell is internally provided with a mounting space for mounting the glass tube, the glass tube is arranged in the mounting space, both ends of the glass tube are arranged in a bare mode, cooling flow channels for circulating cooling liquid are arranged around the mounting space, a water inlet and a water outlet are arranged on the shell and are in communication with the cooling flow channels, and a partition part is arranged between the cooling flow channels and the mounting space and is capable of preventing the two from being in communication and has heat conduction capacity; in the application, the cooling flow channels are used for active cooling, the cooling efficiency of the cladding light stripper is improved, the core structure of the optical fiber is prevented from being damaged by high heat, and the reliability and stability of the fiber laser are affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fiber laser, in particular to a cladding light stripper. BACKGROUND

[0002] In the manufacturing and using process of fiber laser, the cladding material of the fiber needs to be removed to expose the core part of the fiber, which is called cladding light stripping, and the cladding light stripper is a device for stripping the cladding light in the fiber laser.

[0003] The traditional cladding light stripper mainly relies on the heat dissipation of the material itself, and the commonly used material is aluminum or copper, etc. However, in the actual light stripping process, only relying on the heat dissipation of the material itself has low cooling efficiency, and the high temperature may damage the core structure of the fiber, affecting the reliability and stability of the fiber laser. Therefore, people urgently need a cladding light stripper with high cooling efficiency. SUMMARY

[0004] The purpose of the present application is to provide a cladding light stripper to solve the problems existing in the prior art, which uses cooling liquid in the cooling flow channel to cool down, improves the cooling efficiency, and ensures the reliability and stability of the fiber laser.

[0005] To achieve the above purpose, the present application provides the following scheme: the present application provides a cladding light stripper, which comprises a glass tube for stripping residual light in the cladding of the fiber and a shell, the shell is internally provided with a mounting space for mounting the glass tube, the glass tube is arranged in the mounting space, both ends of the glass tube are arranged exposed, the mounting space is provided around with a cooling flow channel for circulating cooling liquid, the shell is provided with a water inlet and a water outlet which are in communication with the cooling flow channel, and a partition part is arranged between the cooling flow channel and the mounting space, which prevents the two from being in communication and has heat conduction capacity.

[0006] Preferably, the shell comprises a cover and a base plate, a first flow channel is arranged in the cover along the axial direction of the glass tube, a second flow channel is arranged on the base plate along the axial direction of the glass tube, the cover is detachably arranged on the base plate, the first flow channel and the second flow channel are combined to form the cooling flow channel, the first flow channel is in communication with the water inlet, and the second flow channel is in communication with the water outlet; a first groove is arranged at the bottom of the cover, a second groove is arranged on the base plate corresponding to the position of the first groove, the first groove and the second groove are combined to form the mounting space, and the groove walls of the first groove and the second groove are the partition part.

[0007] Preferably, the cover body comprises a cover plate and a flow guide plate, the cover plate is bolted on the top of the flow guide plate, the flow guide plate is welded on the top of the base plate, and the water inlet is arranged on the cover plate.

[0008] Preferably, the first flow channel comprises a water inlet area, a flow distribution area and a flow passage arranged in sequence from top to bottom, the water inlet area is communicated with the water inlet, two flow distribution areas are arranged on both sides of the water inlet area respectively, one end of the flow passage is communicated with the flow distribution area, and the other end is communicated with the second flow channel.

[0009] Preferably, the bottom of the flow distribution area is uniformly provided with a plurality of flow passages.

[0010] Preferably, the second flow channel comprises a water receiving area and a water outlet area, two water receiving areas are arranged on both sides of the water outlet area respectively, one end of the water receiving area away from the water outlet area is communicated with the flow passage, and the water outlet area is provided with the water outlet on both sides.

[0011] Preferably, the partition part is provided with a flow disturbing part near the wall surface of the cooling flow channel. Preferably, the shell is a heat-conducting shell, and the shell is provided with a temperature sensor corresponding to both ends of the glass tube.

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

[0013] The present application has the following technical effects compared with the prior art:

[0014] The cooling efficiency of the cladding light stripper is improved by the active cooling mode of the cooling flow channel, the core structure of the optical fiber is prevented from being damaged by high heat, and the reliability and stability of the fiber laser are affected.

[0015] The other schemes of the present application have the following technical effects compared with the prior art:

[0016] The two water inlet channels correspond to the front end and the rear end of the glass tube respectively, which can not only reduce the risk of blockage, but also can connect one liquid supply device for each water inlet, so that the flow can be improved, and different flow can be supplied to adapt to the characteristics that the front half of the glass tube has more stray light and more heat, and the rear half has less stray light and less heat, so that targeted cooling is achieved, and the purpose of saving energy is achieved. The arrangement of the flow passage can improve the flow rate of the cooling liquid and improve the heat exchange effect.

[0017] The inclusion of a turbulence-generating section not only disturbs the coolant but also increases the heat exchange area, effectively improving the heat exchange efficiency.

[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, thereby regulating the flow rate of the coolant, improving the degree of automation and saving energy. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the cladding optical stripper in an embodiment of the present invention;

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

[0022] Figure 3 This is a top view of the cladding optical stripper in an embodiment of the present invention;

[0023] Figure 4 This is a left view of the cladding optical stripper in an embodiment of the present invention;

[0024] Figure 5 for Figure 3 Sectional view at point AA;

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

[0026] Figure 7 This is a schematic diagram of the structure of the cladding stripper behind the hidden cover and guide plate in an 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 plate; 9, guide plate; 10, substrate; 11, first flow channel; 12, second flow channel; 13, first groove; 14, second groove; 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, turbulence part; 23, stepped surface; 24, temperature sensor. Detailed Implementation

[0027] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0028] The purpose of the present application is to provide a cladding light stripper to solve the problems existing in the prior art, which uses the cooling liquid in the cooling flow channel for cooling to improve the cooling efficiency and ensure the reliability and stability of the fiber laser.

[0029] In order to make the above-mentioned purposes, characteristics and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] Please refer to the drawings as shown in Figures 1-7 A cladding light stripper is provided, which comprises a glass tube 1 for stripping residual light in the cladding of an optical fiber and a shell 2, and the shell 2 is internally provided with a mounting space 3 for mounting the glass tube 1, the glass tube 1 is arranged in the mounting space 3, and both ends of the glass tube 1 are arranged exposed, specifically: there is a mounting through hole in the middle of the shell 2 for penetrating the glass tube 1, and the mounting through hole is the mounting space 3, both ends of the glass tube 1 are mounted on the shell through hexagonal plugs 4, the middle of the hexagonal plug 4 is provided with an exposed hole for the glass tube 1 to communicate with the outside, and the end of the glass tube 1 is located in the exposed hole, the mounting space 3 is provided with a cooling flow channel around for circulating cooling liquid, the shell 2 is provided with a water inlet 5 and a water outlet 6 which are in communication with the cooling flow channel, and a partition 7 is arranged between the cooling flow channel and the mounting space 3, which is used to prevent the cooling flow channel from communicating with the mounting space 3 and has heat conduction capacity; the cooling efficiency of the cladding light stripper is improved by using the active cooling mode of the cooling flow channel, and the core structure of the optical fiber is prevented from being damaged by high heat, thereby affecting the reliability and stability of the fiber laser.

[0031] The partition 7 is arranged close to the glass tube 1 to avoid spacing with the glass tube 1, thereby reducing the risk of fracture caused by thermal expansion and contraction of the glass tube 1.

[0032] The material of the partition 7 can be aluminum, aluminum alloy or copper, etc. which has good heat conduction performance, of course, in order to facilitate production and improve the heat dissipation effect, the whole shell 2 can be made of aluminum, aluminum alloy or copper, etc. which has good heat conduction performance.

[0033] The cooling flow channel is preferably arranged in a surrounding manner around the mounting space 3, and along the axis of the glass tube 1, and the length thereof should cover the glass tube 1 in the shell 2 as much as possible.

[0034] The specific structure of the cooling flow channel and the mounting space 3 in the embodiment is that the shell 2 comprises a cover and a base plate 10, the cover is provided with a first flow channel 11 in the shape of a strip along the axial direction of the glass tube 1, the base plate 10 is provided with a second flow channel 12 in the shape of a strip along the axial direction of the glass tube 1, the cover is snap-fitted on the base plate 10, the first flow channel 11 and the second flow channel 12 are combined to form the cooling flow channel, the first flow channel 11 is connected with the water inlet 5, and the second flow channel 12 is connected with the water outlet 6; the bottom of the cover is provided with a first groove 13, the base plate 10 is provided with a second groove 14 at the position corresponding to the first groove 13, the first groove 13 and the second groove 14 are combined to form the mounting space 3, that is, the mounting through hole for mounting the glass tube 1, and the groove walls of the first groove 13 and the second groove 14 are the partition 7. The cover comprises a cover plate 8 and a flow guide plate 9, the cover plate 8 is bolted on the top of the flow guide plate 9, the cover plate 8 and the flow guide plate 9 are snap-fitted to form the first flow channel 11, the first flow channel 11 can be cleaned by detaching the cover plate 8, the flow guide plate 9 is welded on the top of the base plate 10, and the structural strength is improved, and the water inlet 5 is arranged on the cover plate 8.

[0035] Sealing rings 15 can be arranged on the snap-fitted end faces between the flow guide plate 9 and the base plate 10 and between the flow guide plate 9 and the cover plate 8, and the sealing effect is improved.

[0036] Along the axial direction of the glass tube 1, a partition 16 for separating the first flow channel 11 into two water inlet flow channels is arranged at the middle part of the first flow channel 11, the partition 16 can be subsequently welded on the flow guide plate 9 or integrally formed when the flow guide plate 9 is manufactured, the end face of the partition 16 away from the flow guide plate 9 is sealingly connected with the cover plate 8, a sealing strip can be arranged on the top of the partition 16 to achieve sealing connection, or waterproof glue can be used to cover the gap to achieve sealing connection, two water inlets 5 are arranged on the cover, the two water inlets 5 respectively communicate with the water inlet flow channels, and the two water inlet flow channels respectively correspond to the front end and the rear end of the glass tube 1. Not only can the risk of blockage be reduced, but also when one water inlet flow channel is blocked, the other water inlet flow channel is in a normal flow state, so that the situation that when one flow channel is blocked, the equipment cannot be normally used is avoided. In addition, the two water inlets 5 can be respectively connected with one liquid supply device, so that the flow rate can be improved, different flow rates can be supplied, the characteristics that the front half of the glass tube 1 has more stray light and more heat and the rear half of the glass tube 1 has less stray light and less heat can be adapted to, targeted cooling can be achieved, and the purpose of saving energy is achieved.

[0037] The first flow channel 11 in the embodiment comprises a water inlet area 17, a flow distribution area 18 and a flow-through hole 19 which are sequentially connected from top to bottom, the water inlet area 17 is connected with the water inlet 5, two flow distribution areas 18 are respectively arranged on the two sides of the water inlet area 17, one end of the flow-through hole 19 is connected with the flow distribution area 18, and the other end is connected with the second flow channel 12. The arrangement of the flow-through hole 19 can improve the flow rate of the cooling liquid and improve the heat exchange effect.

[0038] In order to improve the uniformity of the cooling liquid flow, the bottom of the distribution area 18 is uniformly provided with a plurality of flow-through holes 19. In order to form a surrounding cooling flow channel in cooperation with the first flow channel 11, the second flow channel 12 includes a water receiving area 20 and a water outlet area 21, two water receiving areas 20 are respectively arranged on both sides of the water outlet area 21, and the end of the water receiving area 20 away from the water outlet area 21 is communicated with the flow-through hole 19. The two sides of the water outlet area 21 are provided with water outlets 6.

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

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

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

[0042] The partition part 7 is provided with a turbulence part 22 on the wall surface close to the cooling flow channel. The turbulence part 22 can be a plate-shaped structure, a block-shaped structure, and the turbulence part 22 can be integrally formed on the partition part 7. The setting of the turbulence part 22 not only causes the cooling liquid to be disturbed, but also increases the heat exchange area, effectively improving the heat exchange effect.

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

[0044] In this embodiment, the outer wall surface of the partition part 7 corresponding to the water receiving area 20 has a stepped surface 23. The tread surface of the stepped surface 23 is upwardly arranged. The stepped surface 23 is mainly formed by the buckling of the first groove body 13 and the second groove body 14. That is, the distance between the part of the outer wall surface of the groove 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 outer wall surface of the groove 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 have a certain turbulence effect.

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

[0046] The water outlet 6 is arranged in the middle of the base plate 10, so that the fluid flows from both ends to the middle in the base, at this time, the temperature sensor 24 arranged at both ends can more accurately measure the temperature change of each of the front and rear halves. In this embodiment, the water inlet 5 is connected to the liquid supply device, and the liquid supply device is a water tank, a refrigeration system and a flow pump, the flow pump is arranged in the water tank, and the refrigeration system is refrigeration of water in the water tank, and the refrigeration system is mainly compressor refrigeration or semiconductor refrigeration, the water outlet 6 returns to the water tank, and the liquid supply device and the temperature sensor 24 are 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 cooling liquid, when the temperature is higher than the set range value, the flow rate of the cooling liquid is increased, when the temperature is lower than the set range value, the flow rate of the cooling liquid is reduced, the degree of automation is improved, and energy is saved.

[0047] The adaptive changes according to actual needs are within the protection scope of the present application.

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

[0049] In the present application, specific examples are applied to illustrate the principles and implementation modes of the present application, and the above embodiment description is only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In conclusion, the content of the present description should not be understood as a limitation of the present application.

Claims

1. A cladding light stripper, characterized by, The application relates to a glass tube for stripping residual light in a cladding layer 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, both ends of the glass tube are exposed, a cooling flow channel for circulating cooling liquid is arranged around the installation space, a water inlet and a water outlet are arranged on the shell and communicate with the cooling flow channel, and a partition part for preventing the communication between the cooling flow channel and the installation space and having heat conduction capacity is arranged between the cooling flow channel and the installation space. The shell comprises a cover and a base plate, a first flow channel is arranged in the cover along the axial direction of the glass tube, a second flow channel is arranged on the base plate along the axial direction of the glass tube, the cover is fastened on the base plate, the first flow channel and the second flow channel are spliced to form the cooling flow channel, the first flow channel communicates with the water inlet, and the second flow channel communicates with the water outlet. In the axial direction of the glass tube, a partition block for separating 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 and respectively communicate with the water inlet flow channels. The cross section of the first flow channel and the second flow channel perpendicular to the axial line of the glass tube is in U shape, and the two ends of the U-shaped structure of the first flow channel communicate with the two ends of the U-shaped structure of the second flow channel to form a surrounding cooling flow channel.

2. The cladding light stripper of claim 1, wherein A first groove is arranged at the bottom of the cover, a second groove is arranged on the base plate and corresponds to the position of the first groove, the first groove and the second groove are spliced to form the installation space, and the groove walls of the first groove and the second groove are the partition part.

3. The cladding light stripper of claim 2, wherein, The cover comprises a cover plate and a flow guide plate, the cover plate is bolted on the top of the flow guide plate, the flow guide plate is welded on the top of the base plate, and the water inlet is arranged on the cover plate.

4. The cladding light stripper of claim 2, wherein The first flow channel comprises a water inlet area, a flow distribution area and a flow hole which are sequentially communicated from top to bottom, the water inlet area communicates with the water inlet, two flow distribution areas are arranged on the two sides of the water inlet area respectively, one end of the flow hole communicates with the flow distribution area, and the other end communicates with the second flow channel.

5. The cladding light stripper of claim 4, wherein, Multiple flow holes are uniformly arranged at the bottom of the flow distribution area.

6. The cladding light stripper of claim 4, wherein, The second flow channel comprises a water receiving area and a water outlet area, two water receiving areas are arranged on the two sides of the water outlet area respectively, one end of the water receiving area away from the water outlet area communicates with the flow hole, and the water outlet area is provided with the water outlet on the two sides.

7. The cladding light stripper of claim 1, wherein A flow disturbing part is arranged on the wall surface of the partition part close to the cooling flow channel.

8. The cladding light stripper of claim 1, wherein, The shell is a heat conduction shell, and temperature sensors are arranged on the shell and correspond to the two ends of the glass tube.

9. The cladding light stripper of claim 8, wherein, The water inlet communicates with a liquid supply device, and the liquid supply device and the temperature sensors are electrically connected with a control system.

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