CN112490827A

CN112490827A - Optical fiber laser

Info

Publication number: CN112490827A
Application number: CN202011478185.9A
Authority: CN
Inventors: 刘江; 杨伟; 李凯峰; 尚国峰; 徐海军
Original assignee: Zhejiang Thermal Stimulation Optical Technology Co ltd
Current assignee: Zhejiang Thermal Stimulation Optical Technology Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-03-12

Abstract

The invention relates to the field of lasers, in particular to a fiber laser. The optical fiber laser comprises an upper cover plate, a lower cover plate, a water cooling plate, a disc fiber plate assembly, a pumping source, a cooling device and a circuit assembly; the disc fiber board assembly, the pumping source, the cooling device and the circuit assembly are all arranged on the water cooling board; the upper cover plate is arranged on one side of the water cooling plate, an upper closed space is formed between the upper cover plate and the water cooling plate, and the disc fiber board assembly, the pumping source and the cooling device are all arranged in the upper closed space; the lower cover plate is arranged on the other side opposite to the water cooling plate, a lower closed space is formed between the lower cover plate and the water cooling plate, and the circuit component is arranged in the lower closed space. According to the invention, only one water cooling plate is arranged, and the pump source and the disc fiber board assembly of the cooling device are arranged on the same side of the water cooling plate, so that the pump source and the passive device can be conveniently welded, and meanwhile, the temperature of the pump source and the temperature of the optical fiber can be monitored during testing.

Description

Optical fiber laser

Technical Field

The invention relates to the field of lasers, in particular to a fiber laser.

Background

The existing fiber laser with the plug-in box type appearance at home and abroad at present adopts the scheme that the pump source and the coiled fiber part are distributed on two surfaces of a water cooling plate or are arranged on different water cooling plates, so that the inconvenience of fusion welding between the pump source and a passive device is brought, and the problem that the temperature of the pump source and the temperature of optical fibers cannot be monitored simultaneously during testing is also brought.

Disclosure of Invention

The invention aims to provide a fiber laser which can facilitate the fusion welding of a pump source and a passive device and can monitor the temperature of the pump source and the temperature of an optical fiber during testing.

The embodiment of the invention is realized by the following steps:

the invention provides an optical fiber laser, which comprises an upper cover plate, a lower cover plate, a water cooling plate, a disc fiber plate assembly, a pumping source, a cooling device and a circuit assembly, wherein the upper cover plate is arranged on the upper side of the water cooling plate;

the disc fiber board assembly, the pumping source, the cooling device and the circuit assembly are all arranged on the water cooling plate;

the upper cover plate is arranged on one side of the water cooling plate, an upper closed space is formed between the upper cover plate and the water cooling plate, and the disc fiber plate assembly, the pumping source and the cooling device are all arranged in the upper closed space;

the lower cover plate is arranged on the other side opposite to the water cooling plate, a lower closed space is formed between the lower cover plate and the water cooling plate, and the circuit component is arranged in the lower closed space.

In an optional embodiment, two opposite sides of the water cooling plate are provided with sealing grooves, and complete sealing rings are arranged in the sealing grooves.

In an optional embodiment, a first wire passing groove and a second wire passing groove are arranged on the water cooling plate, and the first wire passing groove and the second wire passing groove are respectively arranged on the inner side and the outer side of the sealing ring; the groove bottom of the first wire passing groove is communicated with the groove bottom of the second wire passing groove.

In an alternative embodiment, the disc fiberboard assembly comprises a disc fiberboard body, an active optical fiber, a passive device and an indicating light source;

the active optical fiber, the passive device and the indicating light source are integrated on the fiber coiling plate body.

In an optional embodiment, a fiber coiling groove and an optical fiber track groove are further formed in the fiber coiling plate body, the fiber coiling groove and the optical fiber track groove are arranged on the same side of the fiber coiling plate body, and the fiber coiling groove is communicated with the optical fiber track groove;

the active optical fiber is arranged in the fiber coiling groove, and the active optical fiber is connected with the passive device along the optical fiber track groove.

In an optional embodiment, the fiber coiling plate body is provided with an optical fiber area, a melting point area and a device installation area;

the active optical fiber is arranged in the optical fiber area, the passive device is arranged in the device mounting area, and the melting point area is used for setting the melting point of the passive device.

In an alternative embodiment, the cooling device comprises a cooling tube;

the cooling pipe is connected with the pumping source and is used for cooling the pumping source;

the cooling pipe is arranged on one side of the water-cooling plate and used for cooling the water-cooling plate.

In an alternative embodiment, a cooling groove is arranged on the water cooling plate, and the cooling pipe is arranged in the cooling groove.

In an optional embodiment, a liquid inlet hole and a liquid outlet hole are formed in the end portion of the water cooling plate, and the liquid inlet hole and the liquid outlet hole penetrate through the water cooling plate and are communicated with the cooling tank.

In an optional embodiment, a sealing joint is arranged in each of the liquid inlet hole and the liquid discharge hole, and the sealing joint is connected with the cooling pipe in a sealing manner.

The embodiment of the invention has the beneficial effects that:

only set up a water-cooling board, and set up cooling device's pump source and dish fibre board subassembly in same one side of water-cooling board, can realize making things convenient for the butt fusion of pump source and passive device, can also compromise monitoring pump source and optic fibre temperature during the test simultaneously, can carry out the integrative sealed of photoelectricity, adapt to more complicated environment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic perspective view of a fiber laser provided in an embodiment of the present invention;

fig. 2 is a schematic perspective view of a fiber laser provided in an embodiment of the present invention (with an outer casing removed);

fig. 3 is a schematic diagram of an internal structure of a fiber laser provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a water cooling plate and a cooling pipe of a fiber laser provided in an embodiment of the present invention;

FIG. 5 is a schematic perspective view of the joint of FIG. 4;

FIG. 6 is a side view of FIG. 4;

FIG. 7 is a cross-sectional view A-A of FIG. 6;

fig. 8 is a schematic structural diagram of a first wire-passing groove and a second wire-passing groove of a fiber laser provided by an embodiment of the invention;

fig. 9 is a schematic perspective view of a water-cooling plate of a fiber laser provided in an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a sealing joint of a fiber laser provided by an embodiment of the invention;

FIG. 11 is a right side view of FIG. 10;

FIG. 12 is a cross-sectional view B-B of FIG. 11;

fig. 13 is a reference diagram of a use state of a sealing joint of a fiber laser provided by an embodiment of the invention;

fig. 14 is a sectional view of a sealed joint of a fiber laser according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a cooling system of a fiber laser provided in an embodiment of the present invention;

fig. 16 is a schematic structural diagram of a pump source of a fiber laser provided in an embodiment of the present invention;

fig. 17 is a schematic structural diagram of a disc fiber board assembly of a fiber laser according to an embodiment of the present invention.

Icon: 1-an outer shell; 2-a front panel; 3-a rear panel; 4-upper cover plate; 5-water cooling plate; 6-lower cover plate; 7-a disc fiber board assembly; 8-circuit components; 9-a pump source; 10-a cooling tube; 11-connecting blocks; 12-liquid inlet hole; 13-liquid discharge hole; 14-an outer seal groove; 15-inner seal groove; 16-a first wire-passing trough; 17-a second wire trough; 18-communicating holes; 19-a cooling tank; 20-plug-in connector; 21-fixing block; 22-pagoda joints; 23-sealing ring grooves; 24-liquid through hole; 25-a sealing ring; 26-a sealing ring; 27-a sealing joint; 28-a fiber coiled plate body; 29-melting point region; 30-an indicator light source; 31-an active optical fiber; 32-passive devices; 33-device mounting area; 34-fiber region.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to fig. 1 to 17. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The invention provides a fiber laser, which comprises an upper cover plate 4, a lower cover plate 6, a water cooling plate 5, a disc fiber plate component 7, a pumping source 9 cooling device and a circuit component 8, wherein the upper cover plate is arranged on the upper side of the pump source; the disc fiber board assembly 7, the cooling device and the circuit assembly 8 are all arranged on the water cooling plate 5; the upper cover plate 4 is arranged on one side of the water cooling plate 5, an upper closed space is formed between the upper cover plate 4 and the water cooling plate 5, and the disc fiber plate assembly 7 and the cooling device are both arranged in the upper closed space; the lower cover plate 6 is arranged on the other side opposite to the water cooling plate 5, a lower closed space is formed between the lower cover plate 6 and the water cooling plate 5, and the circuit assembly 8 is arranged in the lower closed space.

In this embodiment, the fiber laser further includes a housing, and the parts such as the upper cover plate 4, the lower cover plate 6, the water cooling plate 5, the fiber plate assembly 7, the cooling device, the circuit assembly 8, and the sealing ring 26 are all disposed in the housing, so as to form a whole with all the parts.

Specifically, a front panel 2 and a rear panel 3 are arranged on the outer shell 1, and different interfaces and buttons are arranged on the front panel 2 and the rear panel 3, and are used for performing different controls on the fiber laser.

In the present embodiment, only a single layer of water-cooling plate 5 is provided, wherein one side of the water-cooling plate 5 is mounted with all the circuit-related structural components, and the other side of the water-cooling plate 5 is mounted with a cooling device, a pump source and a fiber coiling disc.

In the preferred embodiment of the present application, the opposite sides of the water-cooled plate 5 are each provided with a sealing groove in which a complete sealing ring 26 is disposed.

All be provided with the seal groove in the both sides of water-cooling plate 5, all spare parts are all surrounded by the seal groove, under the cooperation of water-cooling plate 5 and upper shroud plate 4, under the cooperation of water-cooling plate 5 and lower shroud plate 6, can carry out the complete sealing with each spare part of water-cooling plate 5 both sides, and in this embodiment, the seal groove is complete annular seal groove, does not have any structure existence that destroys leakproofness such as hole structure on the lateral wall of seal groove, does the airtight basis of getting down for follow-up power and light path are integrative.

In this embodiment, a complete circle of narrow grooves are provided as sealing grooves at the positions close to the edges of the upper and lower side surfaces of the water-cooling plate 5, respectively, for accommodating the sealing rings 26. The end faces of the front end and the rear end of the main body of the water cooling plate 5 are provided with threaded holes corresponding to the fixing holes in the front panel 2 and the rear panel 3 on the outer shell 1, and the threaded holes are used for fixing the front panel 2 and the rear panel 3.

In the present embodiment, the seal ring 26 is an O-ring.

In the present embodiment, the upper and lower cover plates 4 and 6 are fixed to the water-cooling plate 5 by screws.

In the fiber laser in the embodiment, the pump source and the disc fiber plate are arranged on the same side of the water cooling plate 5, so that the convenience of welding between the pump source and the disc fiber plate is improved, the convenience of testing in the production process is also improved, and the whole volume and weight of the fiber laser are reduced; the fiber laser improves the standardization degree and indirectly improves the consistency of batch production.

In the embodiment, the optical fiber laser optimizes the communication mode of the circuit component 8 and the panel, can integrally seal the photoelectric, improves the resistance to the complex industrial environment, and prolongs the service life.

In an alternative embodiment, the water cooling plate 5 is provided with a first wire passing groove 16 and a second wire passing groove 17, and the first wire passing groove 16 and the second wire passing groove 17 are respectively arranged on the inner side and the outer side of the sealing ring 26; the groove bottom of the first wire passing groove 16 is communicated with the groove bottom of the second wire passing groove 17.

Specifically, parts, especially circuit-related parts, are arranged between the water cooling plate 5 and the upper cover plate 4 and between the water cooling plate 5 and the lower cover plate 6, and need to be connected with other external parts, and holes cannot be drilled in the sealing groove due to the need to ensure the sealing performance.

Therefore, in order to ensure the sealing performance, the sealing grooves on the upper cover plate 4, the lower cover plate 6 and the water cooling plate 5 are not damaged, and the inner and outer parts can be connected, in this embodiment, the sealing grooves formed on the upper side and the lower side of the water cooling plate 5 are not correspondingly arranged, but are partially staggered, and in the staggered position, the first wire passing groove 16 and the second wire passing groove 17 are respectively arranged on the inner side and the outer side of the inner sealing groove.

Specifically, the first wire passing groove 16 and the second wire passing groove 17 are communicated through the communication hole 18, so that the connection wire can be connected with the front panel 2 or the rear panel 3 after passing through the first wire passing groove 16, the communication hole 18 and the second wire passing groove 17.

In the present embodiment, for convenience of description, when the upper and lower seal grooves are staggered, the seal groove closer to the inner side is defined as an inner seal groove 15, and the seal groove closer to the outer side is defined as an outer seal groove 14.

At this time, the first wire passing groove 16 is arranged inside the inner sealing groove 15, the second wire passing groove 17 is arranged between the inner sealing groove 15 and the outer sealing groove 14, and all parts arranged on the upper side surface and the lower side surface of the water cooling plate 5 are collected through the first wire passing groove 16 and then connected with the outside through the second wire passing groove 17.

After the connection is completed, the first wire passing groove 16 and the second wire passing groove 17 are sealed in a glue pouring mode, the first wire passing groove 16 and the second wire passing groove 17 are sealed, complete sealing separation inside and outside the sealing ring 26 is achieved, and then due to the matching of the sealing groove and the sealing ring 26, the whole sealing effect is achieved.

In this embodiment, the upper and lower sides of the water-cooled plate 5 are provided with a plurality of threaded holes for fixing the circuit assembly 8, the pump source and the fiber plate. And a circle of screw holes are formed on the upper side surface and the lower side surface of the water cooling plate 5 around the outer side of the sealing groove, and are used for fixing the upper cover plate 4 and the lower cover plate 6.

In this embodiment, various interfaces of the circuit assembly 8 are communicated with the interfaces and buttons of the front panel 2 and the rear panel 3 through the first wire passing groove 16 and the second wire passing groove 17 on the water cooling panel 5, and the first wire passing groove 16 and the second wire passing groove 17 are encapsulated by heat-conducting potting adhesive.

In an alternative embodiment, the disc fiberboard assembly 7 includes a disc fiberboard body 28, an active optical fiber 31, a passive device 32, and an indicator light source 30; active optical fibers 31, passive devices 32, and an indicator light source 30 are all integrated on the disk fiber board body 28.

Specifically, in the present embodiment, the disk fiber plate assembly 7 is an independent optical path portion as a whole, and all the passive devices 32, the active optical fibers 31, the indication light source 30, and the like are integrated on the disk fiber plate body 28, and then the disk fiber plate body 28 is fixedly disposed on the water-cooling plate 5.

In the prior art, the passive device 32, the active optical fiber 31, the indication light source 30 and the like are integrated on the water cooling plate 5, when the device or the optical fiber attached to the water cooling plate 5 is burnt by fire, the device or the optical fiber may greatly spread to the water cooling plate 5, the surface of the water cooling plate 5 is damaged, the device or the optical fiber cannot be used continuously, and the direct replacement of the water cooling plate 5 can cause high maintenance cost and high maintenance difficulty.

In the present embodiment, all the passive devices 32, the active optical fibers 31, the indicating light sources 30, and the like are integrated on the disc fiber board body 28 to form the disc fiber board assembly 7.

When parts or optical fibers are burnt out, the water cooling plate 5 is not affected, and only the disc fiber plate assembly 7 is affected, so that the water cooling plate 5 is not required to be replaced, and only the disc fiber plate assembly 7 is replaced, so that the use cost of the optical fiber laser is reduced, and the overall resource utilization rate is improved.

In an alternative embodiment, the active optical fiber 31, the passive device 32, and the indicating light source 30 are all disposed on the same side of the fiber-reeling plate body 28.

In this embodiment, one side of the disc fiberboard body 28 is connected to the water cooling plate 5, and the other components are all provided on the other side of the disc fiberboard body 28, and the disc fiberboard body 28 is cooled by the water cooling plate 5, and the cooled disc fiberboard body 28 cools the other components.

In this embodiment, the fiber plate body 28 is fixed on the upper surface of the water-cooling plate 5 by screws, and is juxtaposed to the pump source installation area of the cooling device, and a heat transfer medium is filled between the fiber plate body 28 and the water-cooling plate 5, so as to increase the heat dissipation effect.

In an optional embodiment, the fiber coiling plate body 28 is further provided with a fiber coiling groove and a fiber track groove, the fiber coiling groove and the fiber track groove are arranged on the same side of the fiber coiling plate body 28, and the fiber coiling groove is communicated with the fiber track groove; the active optical fiber 31 is arranged in the fiber coiling groove, and the active optical fiber 31 is connected with the passive device 32 along the fiber track groove.

In this embodiment, the one end setting of active fiber 31 is in the dish fiber groove, and the other end extends along dish fiber groove and optic fibre orbit groove, is connected with passive device 32, forms the light path structure, and makes optic fibre when setting up, can be more clean and tidy when setting up.

In an alternative embodiment, the fiber coiling plate body 28 is provided with a fiber region 34, a melting point region 29 and a device installation region 33; the active fiber 31 is disposed in the fiber region 34, the passive device 32 is disposed in the device mounting region 33, and the melting point region 29 is used to set the melting point of the passive device 32.

In this embodiment, the fiber plate is initially partitioned, different components are arranged in different regions, the same device is arranged in one region, all melting points are arranged in another region, and the fiber track grooves matched with the fiber specification are used for communication, so that the direction, length, form and the like of the optical fiber are initially specified.

Specifically, in the present embodiment, the disc fiberboard body 28 is divided into three sections as required. The area where the source optical fiber 31 is installed in the middle area is an optical fiber area 34, and the optical fiber area 34 is engraved with an optical fiber track groove similar to a runway; taking the pump source positioned at the left side of the fiber coiling plate body 28 as a reference, the upper area of the active optical fiber 31 is a device installation area 33, and the device installation area 33 contains fixing holes of passive devices 32 such as a high-reflection grating, a low-reflection grating, a forward beam combiner, a reverse beam combiner, a light returning processing device, a mode filtering device and the like; the region below the active optical fiber 31 is a melting point region 29, and the melting point region 29 is provided with a melting point for fixing the forward beam combiner and the high-reflection grating, a melting point for fixing the reverse beam combiner and the low-reflection grating, a melting point for fixing the reverse beam combiner and the mode filtering device, and a melting point for fixing the forward beam combiner and the return light processing device; the device mounting region 33 region communicates with the weld region through the notch.

In an alternative embodiment, the cooling means comprises a cooling tube 10; the cooling pipe 10 is connected with the pumping source 9, and the cooling pipe 10 is used for cooling the pumping source 9; the cooling pipe 10 is provided at one side of the water-cooled plate 5, and the cooling pipe 10 is used for cooling the water-cooled plate 5.

In this embodiment, the cooling pipe 10 is a copper pipe.

In this embodiment, the other side of the device mounting region 33 on the fiber coiling plate body 28 is attached to the copper pipe of the water cooling plate 5, and the other side of the optical fiber region 34 on the fiber coiling plate body 28 is also attached to the copper pipe of the water cooling plate 5.

In this embodiment, the tail fiber of the cooling device area is fusion-spliced with the tail fiber of the combiner on the fiber tray body 28, and the fusion splice is arranged on the same surface of the water-cooling plate 5, and the fusion splice generated by the fusion splicing is placed in the corresponding fiber groove on the fiber tray body 28.

In this embodiment, the cooling device and the disc fiber plate assembly 7 are located on the same side of the water cooling plate 5, and are fixed side by side, so as to facilitate communication and operation between the two.

It should be noted that the layout proposed in this embodiment is only a preferred layout, and actually, the layout may be arranged side by side left and right or arranged side by side up and down, and only one case is shown in this embodiment.

Specifically, in the present embodiment, the cooling device includes a cooling pipe 10, and the cooling pipe 10 forms a passage with a water path in the housing of the pump source 9, so as to ensure that the cooling liquid can directly pass through the main heat generating unit, i.e., the pump source 9, during cooling. Meanwhile, the fiber coiling plate body 28 is attached to the copper pipe, and heat generated on the fiber coiling plate body 28 can be timely dissipated.

The cooling device provided in the embodiment initiatively completes the targeted distribution refrigeration, and initiatively completes the cooling of the light path part as a whole by adopting the flitch.

Specifically, in this embodiment, the pumping sources 9 are plural, the liquid inlet pipe and the liquid outlet pipe of the cooling pipe 10 are respectively connected to the two pumping sources 9, and the water paths in the two pumping sources 9 are communicated, so that the cooling pipe 10 and the pumping sources 9 are connected in series together to form a water loop.

More specifically, in this embodiment, two of the pumping sources 9 are a set, and multiple sets of pumping sources 9 are connected in parallel, so that not only the cooling range is increased, but also the circulation time of the cooling liquid is prevented from being reduced, and further the cooling effect of the cooling liquid is prevented from being reduced due to too long heat exchange time.

Specifically, the pump source 9 is connected in a water path manner, as shown in fig. 15, wherein the direction indicated by the arrow is a water flow direction.

In this embodiment, the pump source 9 is fixed on the upper surface of the water-cooling plate 5 by screws, and is directly communicated with the opening on the copper pipe in the water-cooling plate 5, so that the cooling liquid directly passes through the housing of the pump source, and the targeted heat dissipation is formed.

In an alternative embodiment, the water-cooled plate 5 is provided with a cooling groove 19, and the cooling pipe 10 is arranged in the cooling groove 19.

In this embodiment, a cooling groove 19 is provided in the area surrounded by the sealing groove on the water-cooling plate 5, and the cooling pipe 10 is embedded in the cooling groove 19, so that the cooling pipe 10 can sink into the water-cooling plate 5, and the exposed side of the cooling pipe 10 is flattened and flush with the side surface of the water-cooling plate 5.

By the arrangement, space is fully utilized, and meanwhile, the cooling effect of the water cooling plate 5 can be effectively improved.

In an alternative embodiment, the end of the water cooling plate 5 is provided with a liquid inlet hole 12 and a liquid outlet hole 13, and the liquid inlet hole 12 and the liquid outlet hole 13 are communicated with the cooling tank 19 through the water cooling plate 5.

In order to guarantee the sealing effect between the upper cover plate 4 and the water cooling plate 5, the end part of the water cooling plate 5 is provided with a liquid inlet hole 12 and a liquid outlet hole 13, the liquid inlet hole 12 and the liquid outlet hole 13 at the end part of the water cooling plate 5 penetrate through the lower part of the sealing groove to be communicated with the cooling groove 19, and therefore the purpose of conveying cooling liquid in the cooling pipe 10 can be achieved, and the sealing effect between the upper cover plate 4 and the water cooling plate 5 can be guaranteed.

In the present embodiment, the connection block 11 is provided at the end of the cooling pipe 10, and the connection block 11 is provided on the water-cooling plate 5 in an embedded manner and is provided inside the seal groove enclosure.

Specifically, in this embodiment, the connection block 11 is located in an area surrounded by the sealing groove, and is close to the direction of the sealing groove, the connection block 11 sinks into the water-cooling plate 5 as a whole, and the exposed side surface is flush with the side surface of the water-cooling plate 5.

In an alternative embodiment, a sealing joint 27 is arranged in each of the liquid inlet hole 12 and the liquid outlet hole 13, and the sealing joint 27 is connected with the cooling pipe 10 in a sealing manner; the connection position between the seal joint 27 and the cooling pipe 10 is inside the position corresponding to the seal ring 26.

In this embodiment, the sealing joint 27 is inserted into the connecting block 11 surrounded by the complete sealing ring 26 through a tunnel-type liquid inlet hole 12 or liquid outlet hole 13, a sealing ring 25 is sleeved on one end of the sealing joint 27 to form a piston-type structure, and the connecting block 11 is also communicated with the cooling pipe 10 in a welding manner, so that water leakage is prevented, the integrity of the sealing ring 26 is ensured synchronously, and subsequent sealing is facilitated.

Specifically, the seal ring 25 is a rubber O-ring.

In this embodiment, the sealing joint 27 includes three parts, namely, the insert joint 20, the fixing block 21 and the pagoda joint 22, which are connected in sequence as a whole.

Specifically, the insert joint 20, the fixing block 21 and the pagoda joint 22 are integrally provided.

More specifically, in the present embodiment, the insert joint 20 is inserted into the liquid inlet hole 12 or the liquid outlet hole 13 of the water-cooled plate 5, a sealing ring groove 23 is provided on the outer side wall of the insert joint 20, a sealing ring 25 is provided in the sealing ring groove 23, and sealing between the insert joint 20 and the liquid inlet hole 12 or the liquid outlet hole 13 is achieved by the sealing ring 25.

More specifically, in the present embodiment, the fixing block 21 is disposed at the end of the water cooling plate 5, a countersunk groove is disposed at the orifice of the liquid inlet hole 12 or the liquid outlet hole 13, the fixing block 21 is disposed in the countersunk groove, and the outer side surface of the fixing block 21 is flush with the end surface of the water cooling plate 5. The fixing block 21 is provided with a fixing hole, and the fixing block 21 is connected with the water cooling plate 5 after penetrating through the fixing hole through a screw, so that the purpose of fixing the fixing block 21 on the water cooling plate is achieved.

More specifically, in the present embodiment, the pagoda joint 22 is exposed at the end of the water-cooling plate 5 for communicating with an external liquid-passing pipe to realize the liquid inlet or liquid discharge function.

More specifically, in the present embodiment, the liquid passing hole 24 is formed in the sealing joint 27 to pass through the insert joint 20, the fixing block 21, and the pagoda joint 22, and the liquid passing pipe is communicated with the cooling pipe 10 by the liquid passing hole 24.

In the present embodiment, the sealing joint 27 is mounted in the following manner: one end of a cylindrical bulge on the sealing joint 27 is inserted into the liquid inlet hole 12 or the liquid outlet hole 13 on the water cooling plate 5, and the cylindrical bulge is attached and sealed with the inner wall of the through hole on the connecting block 11 on the water cooling plate 5, so that the water leakage is ensured.

Two concave areas are arranged on the end face of the water cooling plate 5 around the liquid inlet hole 12 and the liquid outlet hole 13, threaded holes are arranged in the concave areas around the liquid inlet hole 12 or the liquid outlet hole 13, and the base of the sealing joint 27 is just embedded in the concave areas and is fixed and pressed by screws.

In the present embodiment, the front panel 2 and the rear panel 3 of the outer case 1 are each provided with an interface, a button, and the like. The front panel 2 and the rear panel 3 are fixed at the front end and the rear end of the water cooling plate 5 through screws or other modes to form an I-shaped appearance.

In this embodiment, the button and the interface lead out a power supply line and a control line, and the power supply line and the control line pass through the first wire passing groove 16 and the second wire passing groove 17 on the water cooling plate 5 and extend to the inner area surrounded by the sealing groove on the water cooling plate 5 in a mode of passing through an underground passage.

The embodiment of the invention has the beneficial effects that:

only set up a water-cooling board 5, and set up cooling device's pump source and dish fibre board subassembly 7 in same one side of water-cooling board 5, can realize making things convenient for the butt fusion of pump source and passive device 32, can also compromise monitoring pump source and optic fibre temperature during the test simultaneously, can carry out the integrative sealed of photoelectricity, adapt to more complicated environment.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fiber laser is characterized by comprising an upper cover plate, a lower cover plate, a water cooling plate, a disc fiber plate assembly, a pumping source, a cooling device and a circuit assembly;

2. The fiber laser of claim 1, wherein opposing sides of the water-cooled plate are each provided with a sealing groove, and wherein a complete sealing ring is provided in the sealing grooves.

3. The fiber laser of claim 2, wherein a first wire passing groove and a second wire passing groove are arranged on the water cooling plate, and are respectively arranged on the inner side and the outer side of the sealing ring;

the groove bottom of the first wire passing groove is communicated with the groove bottom of the second wire passing groove.

4. The fiber laser of claim 1, wherein the disc-fiber assembly includes a disc-fiber body, an active fiber, a passive device, and an indication light source;

5. The fiber laser of claim 4, wherein a fiber coiling groove and a fiber track groove are further formed in the fiber coiling plate body, the fiber coiling groove and the fiber track groove are arranged on the same side of the fiber coiling plate body, and the fiber coiling groove is communicated with the fiber track groove;

6. The fiber laser of claim 4, wherein the fiber coiling plate body is provided with a fiber region, a melting point region and a device installation region;

7. The fiber laser of claim 1, wherein the cooling device includes a cooling tube;

8. The fiber laser of claim 7, wherein a cooling groove is provided on the water-cooling plate, and the cooling tube is disposed within the cooling groove.

9. The fiber laser of claim 8, wherein an end of the water cooling plate is provided with a liquid inlet hole and a liquid outlet hole, and the liquid inlet hole and the liquid outlet hole are communicated with the cooling tank through the water cooling plate.

10. The fiber laser of claim 9, wherein a sealing joint is disposed in each of the liquid inlet hole and the liquid discharge hole, and the sealing joint is in sealing connection with the cooling tube.