A high-power laser aging test cabinet

Abstract

The application discloses a high-power laser aging test cabinet, comprising a laser mounting chamber and an air filtering system, wherein the laser mounting chamber is arranged adjacent to the air filtering system; the air filtering system comprises an air purifier and an air flow homogenizing device which are in communication with each other; the air flow homogenizing device homogenizes the air flow discharged from the air purifier and uniformly discharges the air flow into the cabinet. The test cabinet can adjust the air flow speed in the cabinet, change the air flow mode in the cabinet and achieve a laminar flow mode, thereby reducing the risk of dust particle pollution on the laser.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of laser testing, in particular to a high-power laser aging test cabinet. BACKGROUND

[0002] KW-level high-power lasers have been widely applied to the fields of laser pumping, industrial material processing, biological medicine and military facilities, and the quality requirements of lasers in various fields are very strict. Therefore, the reliability and stability of each laser need to be verified and checked in production, and unqualified products are screened out to ensure that each product is qualified. The laser aging test cabinet commonly used at present is mainly used for aging test of single-tube lasers, low-power fiber lasers and single-Bar lasers, and the aging test cabinet for KW-level high-power lasers is still in optimization.

[0003] Since the output optical power of high-power lasers is extremely high and has high safety hidden dangers, the requirements for the internal environment of the test cabinet are extremely high, especially the air filtration device and the flow state of the internal air flow of the cabinet, which will affect the aging performance of the laser. If the internal air flow is turbulent, the fine dust particles on the surface of the lower cabinet plate will be disturbed and floated up, and as the aging test time increases, a large number of fine dust particles will continuously adhere to the light-emitting surface of the laser, which will cause the laser to fail. If the internal air flow is laminar, the fine dust particles on the surface of the lower cabinet plate will be carried out of the cabinet in the form of laminar flow and will not fluctuate up and down in the cabinet. However, the existing laser aging test cabinet has a turbulent internal air flow mode, which causes a high risk of contamination of the tested laser. SUMMARY

[0004] In view of the above problems, the application discloses a high-power laser aging test cabinet to overcome the above problems or at least partially solve the above problems.

[0005] The technical scheme adopted by the application is as follows: a high-power laser aging test cabinet, comprising a laser installation chamber and an air filtration system, the laser installation chamber is arranged adjacent to the air filtration system, wherein the air filtration system comprises an air purifier and a gas flow uniformization device which are in communication with each other, and the gas flow uniformization device uniformly discharges the air flow discharged from the air purifier into the cabinet.

[0006] Preferably, the gas flow uniformization device comprises a shunt chamber and a plurality of gas flow uniformization chambers, the shunt chamber is provided with an air inlet channel on one side, and the other side of the shunt chamber is communicated with the gas flow uniformization chambers through an air outlet channel.

[0007] Preferably, the shunt chamber is provided with a shunt baffle inside, the shunt baffle is arranged between the air inlet channel and the air outlet channel, and the two ends of the shunt baffle are arranged in a gap with the two ends of the shunt chamber.

[0008] Preferably, the airflow homogenizing chamber comprises an air filter screen and a closely spaced hole mesh plate arranged in sequence along the air outlet direction, the air filter screen is uniformly provided with a plurality of air holes, and the closely spaced hole mesh plate is provided with a plurality of long strip-shaped air grooves.

[0009] Preferably, the air holes on the air filter screen are circular air holes or regular polygonal air holes.

[0010] Preferably, the power supply system comprises a pulse power supply and a continuous power supply, the pulse power supply is used to provide current driving for the pulse laser, and the continuous power supply is used to provide current driving for the continuous laser.

[0011] Preferably, the safety protection system comprises a computer controller and a photosensitive detection module, a thermal sensitive detection module, a flow detection module and a temperature detection module connected with the computer controller, and the photosensitive detection module, the thermal sensitive detection module, the flow detection module and the temperature detection module can also be connected with the laser.

[0012] Preferably, the computer controller is connected with the power supply system, and the computer controller can control the work of the power supply system.

[0013] Preferably, the temperature detection module is installed on the top of the cabinet, and the temperature detection module can feed back the temperature change in the cabinet to the computer controller.

[0014] Preferably, the cooling system can supply water to the cabinet to reduce the temperature inside the cabinet.

[0015] The advantages and beneficial effects of the present application are: the air flow rate is adjusted by the air filter system, the air flow pattern in the cabinet is changed to reach the laminar flow pattern, then the dust particles on the surface of the lower cabinet plate of the cabinet are taken out of the cabinet in the form of laminar flow, and are not fluctuated up and down in the cabinet. The airflow is homogenized and then enters the high-power laser installation chamber in the form of laminar flow, which not only ensures that the laser aging test cabinet is in a positive pressure state to prevent dirt from entering the cabinet, but also ensures that the high-power laser can be tested in a higher cleanliness environment. BRIEF DESCRIPTION OF DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not intended to limit the scope of the application. Moreover, the same reference numerals are used throughout the same figures. In the drawings:

[0017] Figure 1 is the overall structure diagram of the cabinet of the present application;

[0018] Figures 2-3The overall three-dimensional structure of the air flow homogenization device of the present application is shown in the figure.

[0019] Figures 4-5 The internal structure of the air flow homogenization device of the present application is shown in the figure, as well as the air flow direction.

[0020] Figure 6 The overall structure of the air flow homogenization chamber of the present application is shown in the figure.

[0021] Figure 7 The structure of the air filter screen of the present application is shown in the figure.

[0022] Figure 8 The structure of the close-packed hole mesh plate of the present application is shown in the figure.

[0023] Figure 9 The working flow chart of some parts of the present application is shown in the figure.

[0024] In the figure: S air flow direction; S1 air hole; S2 long strip-shaped air groove; 100 air filtration system; 110 air purifier; 120 air flow homogenization device; 121 air inlet channel; 122 air flow distribution baffle; 123 air outlet channel; 124 air flow homogenization chamber; 1241 air filter screen; 1242 close-packed hole mesh plate; 125 air flow distribution chamber; 200 laser installation chamber; 300 power supply system; 400 cooling system; 500 computer controller; 600 light-sensitive detection module; 700 heat-sensitive detection module. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described in detail below in combination with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0026] The technical scheme provided by each embodiment of the present application will be described in detail below in combination with the drawings.

[0027] Reference Figure 1In an embodiment of the present application, the high-power laser aging test cabinet comprises an air filtering system 100 and a laser mounting chamber 200, the laser mounting chamber 200 is arranged adjacent to the air filtering system 100, so that the homogenized air enters the inside of the laser mounting chamber 200, and further, the air filtering system 100 in the embodiment comprises an air purifier 110 and an airflow homogenization device 120 which are internally communicated with each other, the air purifier 110 is used for purifying air, and then the purified air is discharged to the airflow homogenization device 120, and then the airflow homogenization device 120 homogenizes the air flow discharged by the air purifier 110 and uniformly discharges into the cabinet. The airflow homogenization device 120 in the embodiment can adjust the air flow velocity of the air purifier 110, change the air flow mode in the cabinet to achieve laminar flow mode, and reduce the risk of dust particle pollution of the laser.

[0028] Further, referring to Figures 2-4 In an embodiment of the present application, the airflow homogenization device 120 comprises a shunt chamber 125 and a plurality of airflow homogenization chambers 124, the shunt chamber 125 is provided with an air inlet passage 121 on one side, and the other side of the shunt chamber 125 is communicated with the airflow homogenization chambers 124 through an air outlet passage 123. Further, in an embodiment of the present application, the shunt chamber 125 is internally provided with a shunt baffle 122, the shunt baffle 122 is arranged between the air inlet passage 121 and the air outlet passage 123, and the two ends of the shunt baffle 122 are gap arranged with the two ends of the shunt chamber 125, that is, there is a gap between the two ends of the shunt baffle 122 and the two ends of the shunt chamber 125. Referring to Figure 4 , after the air flow of the air purifier 110 enters the shunt chamber 125 along the air inlet passage 121, the airflow direction S is blocked by the shunt baffle 122, the airflow will bypass the gap between the two ends of the shunt chamber 125 to enter the air outlet passage 123, and then enter the airflow homogenization chamber 124, and finally output laminar flow from the airflow homogenization chamber 124. If there is no shunt baffle 122, because the air flow velocity is relatively large after the air flow flows through the air inlet passage 121, the air flow will directly hit the airflow homogenization chamber 124 at the rear end, resulting in that laminar flow cannot be output.

[0029] Referring to Figures 5-8In an embodiment of the present application, the airflow homogenizing chamber 124 comprises an air filter screen 1241 and a closely-spaced hole mesh plate 1242 arranged in sequence along the air outlet direction, the air filter screen 1241 is uniformly provided with a plurality of air holes S1, and the closely-spaced hole mesh plate 1242 is provided with a plurality of rows of long strip-shaped air grooves S2. In this embodiment, the air filter screen 1241 is designed as a mesh-shaped small hole, which aims to uniformly distribute the air in the entire passage and then filter it; the closely-spaced hole mesh plate 1242 is provided with a plurality of rows of long strip-shaped air grooves S2, which aims to make the air flow more easily present in a laminar flow state when it comes out, and the air flow can blow to the chip in a laminar flow state, and if there are tiny dust particles at the bottom, they will not be stirred, thereby reducing the risk of contamination of the laser chip. In an embodiment of the present application, the air holes S1 on the air filter screen 1241 are preferably designed as circular air holes or regular polygonal air holes.

[0030] Further, in an embodiment of the present application, as shown in Figure 1 , the high-power laser aging test cabinet further comprises a power supply system 300 for providing current driving for the laser, wherein the power supply system 300 comprises a pulse power supply and a continuous power supply, the pulse power supply is used to connect the pulse laser to provide current driving for the pulse laser; the continuous power supply is used to connect the continuous laser to provide current driving for the continuous laser, and the embodiment adopts a combined power supply mode to improve the application range of the test cabinet.

[0031] Further, in an embodiment of the present application, the high-power laser aging test cabinet further comprises a safety protection system, referring to Figure 9 , the safety protection system comprises a computer controller 500 and a photosensitive detection module 600, a thermal detection module 700, a flow detection module and a temperature detection module connected with the computer controller 500 respectively, the photosensitive detection module 600, the thermal detection module 700, the flow detection module can also be connected with the laser, the computer controller 500 is also connected with the power supply system 300, the temperature detection module is installed at the top of the cabinet, and the temperature detection module can feed back the temperature change in the cabinet to the computer controller 500.

[0032] In addition, as shown in Figure 1 , the high-power laser aging test cabinet further comprises a cooling system 400, which can supply water to the cabinet to reduce the internal temperature of the cabinet, including laser cooling, light absorption plate cooling and power supply system cooling. Of course, the cooling system of the embodiment is not limited to water cooling, as long as it can reduce the internal temperature of the cabinet and is of appropriate size, it can be applied to the test cabinet of the embodiment.

[0033] In actual work, referring to Figure 9The laser light power change is monitored by the light-sensitive detection module 600 and the output signal is fed back to the computer controller 500, and then the work of the power supply system 300 is controlled by the computer controller 500; the water flow change of the cooling system 400 is monitored by the flow detection module, and when the water flow is lower than or higher than the set range, the output signal is fed back to the computer controller 500, and then the work of the power supply system 300 is controlled by the computer controller 500; the temperature change of the laser is monitored by the thermal sensitive detection module 700, and when the temperature of the laser itself exceeds the set temperature, the output signal is fed back to the computer controller, and then the work of the power supply system is controlled by the computer controller to adjust the temperature of the laser itself; in addition, the temperature detection module is installed on the top of the cabinet, and when the temperature of the cabinet environment exceeds the safe temperature, the temperature detection module will output the signal to the computer controller, and then the work of the power supply is controlled by the computer controller to adjust the temperature to the normal range.

[0034] The air filtering system, the cooling system, the power supply system and the safety protection system are integrated in the application, which can ensure that the high-power laser is tested in a high-cleanliness environment, and can also take away the heat generated by the high-power laser, thereby avoiding the high temperature of the cabinet affecting the performance of the laser and even causing a fire to endanger life safety.

[0035] The above is only a specific embodiment of the application, and those skilled in the art can make other improvements or modifications on the basis of the above embodiment under the above teaching of the application. Those skilled in the art should understand that the above specific description is only to better explain the purpose of the application, and the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A KW-level high-power laser aging test cabinet, characterized in that, The air filtering system and the laser installation chamber are arranged adjacently, the air filtering system comprises an air purifier and an airflow homogenizing device which are internally communicated, and the airflow homogenizing device homogenizes the airflow discharged by the air purifier and discharges the airflow in the form of laminar flow into the cabinet; The airflow homogenizing device comprises a shunt chamber and a plurality of airflow homogenizing chambers, the shunt chamber is provided with an air inlet channel on one side, and the shunt chamber is communicated with the airflow homogenizing chambers through an air outlet channel on the other side; The shunt chamber is internally provided with a shunt baffle, the shunt baffle is arranged between the air inlet channel and the air outlet channel, and the shunt baffle is gap arranged at both ends of the shunt chamber.

2. The high power laser burn-in test cabinet of claim 1, wherein, The airflow homogenizing chamber comprises an air filtering screen and a dense hole mesh plate which are arranged in sequence along the air outlet direction, the air filtering screen is uniformly provided with a plurality of air holes, and the dense hole mesh plate is provided with a plurality of long strip air grooves.

3. The high power laser burn-in test cabinet of claim 2, wherein, The air holes on the air filtering screen are circular air holes or regular polygon air holes.

4. The high power laser burn-in test cabinet of claim 1, wherein, The power supply system comprises a pulse power supply and a continuous power supply, the pulse power supply is used to provide current driving for the pulse laser, and the continuous power supply is used to provide current driving for the continuous laser.

5. The high power laser burn-in test cabinet of claim 4, wherein, The safety protection system comprises a computer controller and a photosensitive detection module, a thermal detection module, a flow detection module and a temperature detection module which are respectively connected with the computer controller, and the photosensitive detection module, the thermal detection module, the flow detection module and the temperature detection module can be connected with the laser.

6. The high power laser burn-in test cabinet of claim 5, wherein, The computer controller is connected with the power supply system, and the computer controller can control the working of the power supply system.

7. The high power laser burn-in test cabinet of claim 5, wherein, The temperature detection module is installed on the top of the cabinet, and the temperature detection module can feed back the temperature change in the cabinet to the computer controller.

8. The high power laser burn-in test cabinet of claim 5, wherein, The cooling system can supply water to the cabinet to reduce the temperature in the cabinet.

Images