Graded water-cooling high-energy laser total absorption device

Abstract

The utility model discloses a graded water-cooling high-energy laser total absorption device which comprises an absorption barrel and a water-cooling module. The water cooling module comprises a first-stage cooling water tank, a second-stage cooling water tank and a third-stage cooling box; a water circulation channel is provided between the absorption barrel and the primary cooling water tank by a first water inlet pipe and a first water return pipe; the first-stage cooling water tank and the second-stage cooling water tank are blocked by a graded water partition plate, and a water circulation channel is provided by a communicating water pipe and a water partition plate communicating hole in the graded water partition plate; a water circulation channel is provided between the second-stage cooling water tank and the third-stage cooling tank through a second water inlet pipe and a second water return pipe. According to the utility model, water is used as a direct absorber, the absorption of continuous high-energy laser in a million-watt-level power range is realized, the power level coverage range is wide, and the applicability is wide; aiming at absorption and full-automatic graded water cooling of lasers with different power grades, the laser water cooling device avoids insufficient or excessive flowing of cooling water, ensures the water cooling effect and has high reliability.

Description

Technical Field

[0001] This utility model belongs to the field of high-energy laser technology and relates to a graded water-cooled high-energy laser total absorption device. Background Technology

[0002] High-energy laser products undergo a series of tests during research, development, testing, and evaluation, with laser absorption devices incorporated into the test optical path. Existing laser absorption devices often use metal as the direct absorber, which is highly susceptible to ablation damage, generating dust that contaminates the laboratory environment and laser lenses. Some laser absorption devices lack circulating water cooling, limiting their laser power handling capacity. Even those with circulating water cooling have closed-loop cooling modules, making water replenishment and replacement difficult, and the constant water flow leads to excessive flow for low-power lasers, wasting pump power and energy. Conversely, insufficient flow for high-energy lasers prevents timely heat dissipation, potentially causing a continuous temperature rise, impacting the device's lifespan and posing safety hazards. As high-energy laser products evolve and their power levels increase, there is an urgent need for laser absorption devices capable of handling even higher power levels. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] The purpose of this invention is to provide a fully absorption and fully automatic graded water cooling solution for lasers of different power levels. It utilizes water for the full absorption of the laser and achieves fully automatic graded water cooling through temperature monitoring and graded water circulation. This avoids insufficient or excessive cooling water flow, ensuring the cooling effect and reliability. It also enables rapid water addition and replacement for higher power laser absorption and operation.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, this utility model provides a graded water-cooled high-energy laser total absorption device, which includes an absorption tank 1 and two main modules: a water-cooling module and a tertiary cooling tank 18. The water-cooling module includes a primary cooling water tank 25, a secondary cooling water tank 21, and a tertiary cooling tank 18. A water circulation channel is provided between the absorption tank 1 and the primary cooling water tank 25 by a first inlet pipe 2 and a first return pipe 24. A graded water baffle 8 blocks the connection between the primary cooling water tank 25 and the secondary cooling water tank 21, and a water circulation channel is provided by a connecting water pipe 10 and a water baffle connecting hole 22 on the graded water baffle 8. A water circulation channel is provided between the secondary cooling water tank 21 and the tertiary cooling tank 18 by a second inlet pipe 12 and a second return pipe 19.

[0007] The absorption tank 1 includes a tank body 101. A front window 102 and a rear window 109 are respectively provided at the front and rear ends of the tank body 101. A laser beam expander lens 105 is provided at the front window 102, and a light reflection cone 112 is provided at the rear window 109. The tank body 101 is filled with water, which serves as the direct absorption medium for the laser.

[0008] The laser beam expander 105 is housed in a lens box 108, which is installed in the front window 102. The laser beam expander 105 is tilted 5° to the left or right. The laser beam expander 105 is a plano-concave mirror.

[0009] Among them, the light reflection cone 112 is installed in the rear window 109. The outer surface of the light reflection cone 112 is coated with a high-reflection film layer, and the interior is drilled with stepped holes to increase the heat dissipation area. A rear window cover plate 110 is provided at the rear window 109, and a hydraulic quick connector 111 is provided on the rear window cover plate 110.

[0010] The absorption tank 1 has handles 115 at both ends of the top of the tank body 101; an exhaust port 118 is provided at the center of the top of the tank body 101; two absorption tank cooling water connectors 117 and two absorption tank auxiliary cooling water connectors 119 are provided on the outer wall of the tank body 101; and two light reflection cone cooling water connectors 116 are provided at the rear end of the tank body 101.

[0011] The barrel 101 has a front window cover 103 on the front window 102, a mirror box 108 on the front window cover 103, a mirror box cover 107 on the mirror box 108, a plano-concave mirror sealing gasket 104 between the laser beam expander lens 105 and the mirror box 108, a front window O-ring seal 106 between the mirror box 108 and the front window cover 103, a rear window O-ring seal 113 between the rear window cover 110 and the light reflection cone 112, and a first temperature sensor 114 on the top of the inner wall of the barrel 101.

[0012] The first water inlet pipe 2 is located on one side of the primary cooling water tank 25 and is equipped with a first one-way throttle valve 5 and a first water pump 4; the side wall of the primary cooling water tank 25 is equipped with a second temperature sensor 3 and a low water level sensor 23.

[0013] The primary cooling water tank 25 and the secondary cooling water tank 21 share a common box, which is divided into two spaces by a water partition 8. A water inlet cover 20 is installed on the top of the secondary cooling water tank 21 in the common box. A connecting water pipe 10 is installed on the water partition 8, and a second one-way throttle valve 6 and a second water pump 7 are installed on one side of the primary cooling water tank 25 connected to the water pipe 10.

[0014] The secondary cooling water tank 21 has a third temperature sensor 9 installed on its side wall; the second water inlet pipe 12 has a third one-way throttle valve 11 and a third water pump 13 installed on one side of the secondary cooling water tank 21.

[0015] The three-stage cooling box 18 is equipped with an evaporator 14, a compressor 15, a condenser 16 and a fourth one-way throttle valve 17 connected in sequence by pipelines. The fourth one-way throttle valve 17 is connected to the evaporator 14.

[0016] (III) Beneficial Effects

[0017] The graded water-cooled high-energy laser total absorption device provided by the above technical solution has the following characteristics:

[0018] Beneficial effects:

[0019] 1. This utility model utilizes water as a direct absorber to achieve the absorption of continuous high-energy lasers within the megawatt-level power range, covering a wide range of power levels and having broad applicability.

[0020] 2. This utility model provides a solution for absorption and fully automatic graded water cooling of lasers of different power levels, avoiding insufficient or excessive cooling water flow, ensuring water cooling effect and high reliability.

[0021] 3. This utility model combines closed and open water circulation channels to overcome the difficulties of manual water addition and replacement, and realizes water addition and replacement in working condition.

[0022] 4. This utility model features a separate design for each functional module, which facilitates optical path design and layout and improves ease of use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the graded water-cooled high-energy laser total absorption device of this utility model.

[0024] Figure 2 This is a schematic diagram of the external structure of the absorption tank of this utility model.

[0025] Figure 3 This is a schematic diagram of the internal structure of the absorption tank of this utility model. Detailed Implementation

[0026] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0027] like Figures 1 to 3As shown, the staged water-cooled high-energy laser total absorption device in this embodiment is divided into two main modules: the absorption tank 1 and the water cooling module. The water cooling module includes a primary cooling water tank 25, a secondary cooling water tank 21, and a tertiary cooling box 18. The absorption tank 1 and the primary cooling water tank 25 are connected by a first inlet pipe 2 and a first return pipe 24 to provide a water circulation channel. The primary cooling water tank 25 and the secondary cooling water tank 21 are blocked by a staged water baffle 8, and a water circulation channel is provided by a connecting water pipe 10 and a water baffle connecting hole 22 on the staged water baffle 8. The secondary cooling water tank 21 and the tertiary cooling box 18 are connected by a second inlet pipe 12 and a second return pipe 19 to provide a water circulation channel.

[0028] The absorption tank 1 includes a tank body 101. A front window 102 and a rear window 109 are respectively provided at the front and rear ends of the tank body 101. A laser beam expander lens 105 is provided at the front window 102, and a light reflection cone 112 is provided at the rear window 109. The tank body 101 is filled with water, which serves as the direct absorption medium for the laser.

[0029] The laser beam expander lens 105 is placed inside the lens box 108, which is installed in the front window 102. The laser beam expander lens 105 is tilted 5° to the left or right to prevent reflected laser from damaging the laser source.

[0030] The laser beam expander lens 105 is a plano-concave mirror with a surface coating, exhibiting high transmittance and a high damage threshold.

[0031] The light reflector cone 112 is installed in the rear window 109. The outer surface of the light reflector cone 112 is coated to have high reflectivity, and stepped holes are drilled inside to increase the heat dissipation area.

[0032] A rear window cover plate 110 is provided at the rear window 109, and a hydraulic quick connector 111 is provided on the rear window cover plate 110.

[0033] The front window 102, laser beam expander lens 105, light reflection cone 112, rear window 109, and hydraulic quick connector 111 are all reliably connected to the barrel body 101 and are waterproof and sealed.

[0034] The absorption tank 1 is connected to the primary cooling water tank 25 by a hydraulic quick coupling, which facilitates disassembly during optical path construction and maintenance.

[0035] The first water inlet pipe 2 is located on one side of the primary cooling water tank 25 and is equipped with a first one-way throttle valve 5 and a first water pump 4.

[0036] A second temperature sensor 3 and a low water level sensor 23 are installed on the side wall of the primary cooling water tank 25.

[0037] The primary cooling water tank 25 and the secondary cooling water tank 21 share a common enclosure, which is divided into two spaces by a water partition 8. A water inlet cover 20 is installed at the top of the secondary cooling water tank 21 in the common enclosure.

[0038] A connecting water pipe 10 is installed on the graded water baffle 8, and a second one-way throttle valve 6 and a second water pump 7 are installed on one side of the primary cooling water tank 25 of the connecting water pipe 10. A water baffle connecting hole 22 is provided on the upper part of the graded water baffle 8 for water to flow through.

[0039] A third temperature sensor 9 is installed on the side wall of the secondary cooling water tank 21.

[0040] The second water inlet pipe 12 is equipped with a third one-way throttle valve 11 and a third water pump 13 on one side of the secondary cooling water tank 21.

[0041] The three-stage cooling box 18 is equipped with an evaporator 14, a compressor 15, a condenser 16 and a fourth one-way throttle valve 17 connected in sequence by pipes. The fourth one-way throttle valve 17 is connected to the evaporator 14.

[0042] Handles 115 are provided at both ends of the top of the absorption tank 101 for lifting and moving during optical path arrangement. An exhaust port 118 is provided at the center of the top of the tank 101. Two absorption tank cooling water connectors 117 and two absorption tank auxiliary cooling water connectors 119 are provided on the outer wall of the tank 101. Two light reflection cone cooling water connectors 116 are provided at the rear end of the tank 101.

[0043] A front window cover 103 is provided on the front window 102 of the barrel body 101. A mirror box 108 is installed on the front window cover 103, and a mirror box cover 107 is provided on the mirror box 108. A plano-concave mirror sealing gasket 104 is provided between the laser beam expander lens 105 and the mirror box 108. A front window O-ring seal 106 is provided between the mirror box 108 and the front window cover 103. A rear window O-ring seal 113 is provided between the rear window cover 110 and the light reflection cone 112. A first temperature sensor 114 is provided on the top of the inner wall of the barrel body 101.

[0044] like Figure 2 As shown, depending on the laser power level, the water-cooled module can be connected to some or all of the following: absorption tank optical reflection cone cooling water connector 116, absorption tank cooling water connector 117, and absorption tank auxiliary cooling water connector 119.

[0045] like Figure 3 As shown, the laser incident on the absorption tank 1 is expanded by the laser beam expander lens 105 before entering the water body, where the laser energy is absorbed. Lasers of different wavelengths can be reflected back and forth between the outer surface of the light reflection cone 112 and the inner surface of the tank 101, allowing the energy to be fully absorbed by the water body.

[0046] The staged water-cooled high-energy laser total absorption device is started, controlling the first one-way throttle valve 5 to operate in low-flow mode by default. Cooling water from the first-stage cooling water tank 25 is injected into the absorption tank 1 through the first one-way throttle valve 5 and the first water pump 4. The water in the absorption tank is squeezed and returned to the first-stage cooling water tank 25 through the first return water pipe 24, repeating the first-stage circulating water cooling. Before receiving the laser, the exhaust connector 118 should be opened to remove air bubbles from the water before normal operation to avoid air bubbles affecting the absorption of laser energy by the water.

[0047] When the first temperature sensor 114 in the absorption tank 1 detects that the water temperature has reached a certain set value (e.g., 40°C, this parameter can be set manually), it controls the first one-way throttle valve 5 to operate in high flow mode to accelerate water exchange.

[0048] When the second temperature sensor 3 in the primary cooling water tank 25 detects that the water temperature has reached a certain set value (e.g., 40℃, this parameter can be set manually), it controls the operation of the second one-way throttle valve 6 and the second water pump 7. The hot water in the primary cooling water tank 25 is injected into the secondary cooling water tank 21 through the second one-way throttle valve 6 and the second water pump 7. The liquid level in the secondary cooling water tank 21 rises, and an equal amount of water overflows the connecting hole 22 of the graded water baffle 8 and flows into the primary cooling water tank 25, realizing the second-stage circulating water cooling.

[0049] When the third temperature sensor 9 in the secondary cooling water tank 21 detects that the water temperature has reached a certain set value (e.g., 40℃, this parameter can be set manually), it controls the operation of the third one-way throttle valve 11, the third water pump 13, and the tertiary cooling tank 18. The hot water in the secondary cooling water tank 21 is injected into the tertiary cooling tank 18 through the third one-way throttle valve 11 and the third water pump 13. The water is then rapidly cooled in the evaporator 14 by the condenser 16 and the compressor 15. The cooled water is then returned to the secondary cooling water tank 21, thus realizing the third-stage circulating water cooling.

[0050] The start-up thresholds for the one-way throttle valve and water pump controlled by each temperature sensor can be manually set according to the room temperature and laser power level.

[0051] The low water level sensor 23 can monitor the water level in the primary cooling water tank. When the water level in the primary cooling water tank 25 is lower than that of the low water level sensor, the system will issue an alarm to prompt the staff to add cooling water.

[0052] Water inlet cover plate 20 can be used to add and replace cooling water when the device is stopped or started.

[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A graded water-cooled high-energy laser total absorption device, characterized in that, It includes two main modules: an absorption tank (1) and a water cooling module. The water cooling module includes a primary cooling water tank (25), a secondary cooling water tank (21), and a tertiary cooling box (18). The absorption tank (1) and the primary cooling water tank (25) are connected by a first inlet pipe (2) and a first return pipe (24). The primary cooling water tank (25) and the secondary cooling water tank (21) are connected by a graded water baffle (8), and a water circulation channel is provided by a connecting water pipe (10) and a water baffle connecting hole (22) on the graded water baffle (8). The secondary cooling water tank (21) and the tertiary cooling box (18) are connected by a second inlet pipe (12) and a second return pipe (19).

2. The graded water-cooled high-energy laser total absorption device as described in claim 1, characterized in that, The absorption tank (1) includes a tank body (101), with a front window (102) and a rear window (109) respectively set at the front and rear ends of the tank body (101). A laser beam expander lens (105) is set at the front window (102), and a light reflection cone (112) is set at the rear window (109). The tank body (101) is filled with water as a direct absorption medium for laser.

3. The graded water-cooled high-energy laser total absorption device as described in claim 2, characterized in that, The laser beam expander (105) is placed inside the lens box (108), which is installed in the front window (102). The laser beam expander (105) is tilted 5° to the left or right. The laser beam expander (105) is a plano-concave mirror.

4. The graded water-cooled high-energy laser total absorption device as described in claim 3, characterized in that, A light reflection cone (112) is installed in the rear window (109). The outer surface of the light reflection cone (112) is coated with a high-reflection film, and stepped holes are drilled inside to increase the heat dissipation area. A rear window cover plate (110) is provided at the rear window (109), and a hydraulic quick connector (111) is provided on the rear window cover plate (110).

5. The graded water-cooled high-energy laser total absorption device as described in claim 4, characterized in that, The top two ends of the barrel body (101) of the absorption barrel (1) are respectively provided with handles (115); an exhaust port (118) is provided at the center of the top of the barrel body (101); two absorption barrel cooling water connectors (117) and two absorption barrel auxiliary cooling water connectors (119) are provided on the outer wall of the barrel body (101); and two light reflection cone cooling water connectors (116) are provided at the rear end of the barrel body (101).

6. The graded water-cooled high-energy laser total absorption device as described in claim 5, characterized in that, A front window cover plate (103) is provided on the front window (102) of the barrel body (101), a mirror box (108) is installed on the front window cover plate (103), a mirror box cover (107) is provided on the mirror box (108), a plano-concave mirror sealing gasket (104) is provided between the laser beam expander lens (105) and the mirror box (108), a front window O-ring seal (106) is provided between the mirror box (108) and the front window cover plate (103), a rear window O-ring seal (113) is provided between the rear window cover plate (110) and the light reflection cone (112), and a first temperature sensor (114) is provided on the top of the inner wall of the barrel body (101).

7. The graded water-cooled high-energy laser total absorption device as described in claim 6, characterized in that, The first water inlet pipe (2) is located on one side of the primary cooling water tank (25) and is equipped with a first one-way throttle valve (5) and a first water pump (4); a second temperature sensor (3) and a low water level sensor (23) are installed on the side wall of the primary cooling water tank (25).

8. The graded water-cooled high-energy laser total absorption device as described in claim 7, characterized in that, The primary cooling water tank (25) and the secondary cooling water tank (21) share a box, which is divided into two spaces by a water partition (8); the shared box has a water inlet cover (20) installed at the top of the secondary cooling water tank (21); a connecting water pipe (10) is installed on the water partition (8), and a second one-way throttle valve (6) and a second water pump (7) are installed on the side of the primary cooling water tank (25) of the connecting water pipe (10).

9. The graded water-cooled high-energy laser total absorption device as described in claim 8, characterized in that, A third temperature sensor (9) is installed on the side wall of the secondary cooling water tank (21); a third one-way throttle valve (11) and a third water pump (13) are installed on one side of the second water inlet pipe (12).

10. The graded water-cooled high-energy laser total absorption device as described in claim 9, characterized in that, The three-stage cooling box (18) is equipped with an evaporator (14), a compressor (15), a condenser (16) and a fourth one-way throttle valve (17) connected in sequence by pipes. The fourth one-way throttle valve (17) is connected to the evaporator (14).

Images