CN218386174U - Light receiving device for high-power optical fiber laser above ten-thousand watt level - Google Patents
Light receiving device for high-power optical fiber laser above ten-thousand watt level Download PDFInfo
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- CN218386174U CN218386174U CN202221416831.3U CN202221416831U CN218386174U CN 218386174 U CN218386174 U CN 218386174U CN 202221416831 U CN202221416831 U CN 202221416831U CN 218386174 U CN218386174 U CN 218386174U
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Abstract
The utility model discloses a light receiving device for high-power optical fiber laser above ten-thousand watt level, belonging to the technical field of laser testing; the system comprises a light receiving cylinder, a circulating water system, a measuring sensor, a water flowmeter, a data acquisition board and a data processing terminal; the light receiving cylinder comprises a light receiving cylinder body and a rear cover, and the rear end face of the rear cover corresponding to the light receiving cylinder body is connected to the light receiving cylinder body; the rear end face of the light receiving cylinder is inwards provided with a circular-section circulating cooling water tank, the front end face of the light receiving cylinder is inwards provided with a circular-section laser reflection tank, and the circulating cooling water tank is positioned outside the laser reflection tank; a light receiving cone frame with a wall thickness is arranged between the circulating cooling water tank and the laser reflection tank, a light receiving cone is arranged on the rear end face of the light receiving cone frame, and a conical light receiving face on the light receiving cone is arranged towards the front end face of the light receiving cylinder. The utility model discloses to super power laser emission equipment in engineering application, can realize the light absorption function of high power fiber laser more than the ten thousand watt levels, and with low costs, economical and practical.
Description
Technical Field
The utility model relates to a high-power laser absorbing device, concretely relates to receive light device that is used for high power fiber laser more than ten thousand watts, belong to laser test technical field.
Background
The fiber laser has compact structure and good beam quality, can be conveniently integrated with other systems based on the flexible laser output mode, and can be widely used in scenes such as welding, cutting, surface decontamination and the like. Laser belongs to the wavelength range of invisible light, and high-power laser has extremely strong lethality, and needs to utilize special light receiving equipment to make it propagate in controllable range.
The existing light receiving equipment is mainly based on a laser power meter, and measures the laser power while receiving light. The cost of the existing laboratory-level power meter with the power of more than ten thousand watts is extremely high, the technology is monopolized by foreign companies all the time, and foreign manufacturers strictly manage and control China for the power meter with the power of more than 10 ten thousand watts and are extremely difficult to buy. For laser emitting equipment above the ten-thousand watt level in engineering application, power parameters do not need to be read, only a laser absorption device needs to be provided, and the purchase of an import power meter is not economical.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the light receiving device for the high-power optical fiber laser above the ten-kilowatt level is simple in structure, economical and practical, and the light absorption function of the high-power optical fiber laser above the ten-kilowatt level is realized with the lowest cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a light receiving device for high-power optical fiber laser with the power of more than ten thousand watt levels comprises a light receiving barrel, a circulating water system and a measuring sensor, wherein the circulating water system and the measuring sensor are used for cooling the light receiving barrel in a circulating manner;
the light receiving cylinder comprises a light receiving cylinder body and a rear cover, and the rear end face of the rear cover corresponding to the light receiving cylinder body is connected to the light receiving cylinder body; the rear end face of the light receiving cylinder is inwards provided with a circular-section circulating cooling water tank, the front end face of the light receiving cylinder is inwards provided with a circular-section laser reflection tank, and the circulating cooling water tank is positioned outside the laser reflection tank; a light receiving cone frame with a wall thickness is arranged between the circulating cooling water tank and the laser reflection tank, a light receiving cone is arranged on the rear end face of the light receiving cone frame, and a conical light receiving face on the light receiving cone is arranged towards the front end face of the light receiving cylinder.
The side wall of the light receiving cylinder is provided with two circulating water holes which are communicated with a circulating cooling water tank, and the measuring sensor comprises a water inlet temperature sensor and a water outlet temperature sensor and is respectively connected to the circulating water holes on the two sides of the light receiving cylinder through pipelines; the water outlet temperature sensor is further connected with a water flowmeter through a pipeline, the circulating water system is respectively connected with the water inlet temperature sensor and the water flowmeter through pipelines, the water inlet temperature sensor, the water outlet temperature sensor and the water flowmeter are all electrically connected with a data acquisition board, and the data acquisition board is electrically connected with a data processing terminal.
The light receiving cone is detachably connected to the rear end face of the light receiving cone frame through a bolt.
The rear end face of the light cone is a plane, and a gap is formed between the rear end face and the inner end face of the rear cover.
The light receiving cone is made of copper materials, and a gold-plated layer is arranged on the surface of the conical light receiving surface of the light receiving cone.
The rear end outer edge face of the light receiving cylinder is further provided with a sealing groove, a rubber sealing ring is arranged in the sealing groove, and the rear cover and the light receiving cylinder are fixedly and hermetically connected through bolts and the rubber sealing ring.
The light receiving cylinder is made of aluminum alloy materials, and a black oxidation treatment layer is arranged on the outer surface of the light receiving cylinder.
And a black light absorption material coating layer is arranged on the inner surface of the light receiving cone frame.
The beneficial effects of the utility model are that:
1) The utility model provides a receive the interior structure cooperation design through recirculated cooling water groove and photic centrum of a section of thick bamboo, reached the effect of rapid cooling and extinction, and lead to recirculated cooling water through connecting water-cooling equipment, adopt recirculated cooling water to take away laser energy, realized the receipts light function of the super high power laser more than ten thousand watts.
2) The light collecting cylinder body in the utility model is made of aluminum alloy, has good heat conductivity and black oxidation treatment on the surface, and can reduce the reflection of light; and the inner surface of the cylinder is coated with black light absorption materials, and the laser reflected by the conical light receiving surface can be absorbed, so that the light absorption efficiency is improved.
3) The light-receiving cone body in the utility model is used as a wearing part, adopts replaceable structural design to reduce the use cost, is processed by copper materials and has good heat conductivity; the surface of the conical light receiving surface is plated with gold, so that the reflectivity of the light receiving surface is improved, the damage of the conical light receiving surface is reduced, and the power calculation accuracy can be improved.
Drawings
Fig. 1 is a schematic view of the structural connection of the light receiving device of the present invention;
FIG. 2 is a cross-sectional view of the light-collecting barrel structure of FIG. 1;
fig. 3 is a perspective view of the light collecting tube structure in fig. 1.
In the figure, 1-a light receiving cylinder, 2-a rear cover, 3-a circulating cooling water tank, 4-a laser reflecting tank, 5-a light receiving cone frame, 6-a light receiving cone, 7-a conical light receiving surface, 8-a circulating water hole and 9-a rubber sealing ring;
in fig. 1, the straight lines are connected electrically, and the double straight lines are connected by pipelines.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
Example (b): as shown in fig. 1-3, the utility model provides a light receiving device for ten thousand watt level or more high power fiber laser, including receiving a light section of thick bamboo, be used for to receiving a light section of thick bamboo circulation cooling's circulating water system and measuring transducer to and be used for calculating the water flowmeter, data acquisition board and the data processing terminal of laser beam power; the measuring sensor comprises a water inlet temperature sensor and a water outlet temperature sensor which are respectively connected with the two sides of the light receiving cylinder through pipelines; the water outlet temperature sensor is further connected with a water flowmeter through a pipeline, the circulating water system is respectively connected with the water inlet temperature sensor and the water flowmeter through pipelines, the water inlet temperature sensor, the water outlet temperature sensor and the water flowmeter are all electrically connected with a data acquisition board, and the data acquisition board is electrically connected with a data processing terminal.
The light receiving cylinder comprises a light receiving cylinder body 1 and a rear cover 2, and the rear end face of the rear cover 2 corresponding to the light receiving cylinder body 1 is connected to the light receiving cylinder body 1; the rear end face of the light receiving cylinder body 1 is inwards provided with a circular-section circulating cooling water tank 3, the front end face is inwards provided with a circular-section laser reflection tank 4, and the circulating cooling water tank 3 is positioned outside the laser reflection tank 4; a light receiving cone frame 5 with a thick wall is arranged between the circulating cooling water tank 3 and the laser reflection tank 4, a light receiving cone 6 is arranged on the rear end face of the light receiving cone frame 5, and a conical light receiving face 7 on the light receiving cone 6 is arranged towards the front end face of the light receiving cylinder 1.
Two circulating water holes 8 which are communicated with the circulating cooling water tank 3 are formed in the side wall of the light receiving cylinder body 1, and a water inlet temperature sensor and a water outlet temperature sensor are respectively connected to the circulating water holes 8 on the two sides of the light receiving cylinder body through pipelines.
The light receiving cone 6 is used as a quick-wear part, adopts a replaceable structure design and is detachably connected to the rear end face of the light receiving cone frame 5 through a bolt. The rear end face of the light cone 6 is a plane, and a gap is arranged between the rear end face and the inner end face of the rear cover 2, so that circulating water can flow and be cooled conveniently.
The light receiving cone 6 is made of copper materials, the heat conductivity is good, and a gold plating layer is arranged on the surface of the conical light receiving surface 7 on the light receiving cone 6, so that the reflectivity of the light receiving surface is improved, and the damage to the conical light receiving surface is reduced.
The light receiving cylinder body 1 is made of aluminum alloy materials, is good in heat conductivity, and is provided with a black oxidation treatment layer on the outer surface, so that light reflection is reduced.
The inner surface of the light receiving cone frame 5 is provided with a black light absorption material coating layer which can absorb the laser reflected by the conical light receiving surface.
The working principle is as follows: when a high-power laser beam is incident on the light receiving cone 6 in the light receiving cylinder 1, the high-reflectivity surface of the cone-shaped light receiving surface 7 reflects the high-reflectivity surface onto the inner surface of the light receiving cone 5 in the light receiving cylinder, and the inner surface is coated with a black light absorbing material, so that the high-power laser beam reflected from the cone-shaped light receiving surface 7 can be absorbed. The light receiving cylinder 1 absorbs laser energy, so that the temperature is increased, and heat can be taken away through circulating cooling water.
The conical mechanical structure subjected to surface treatment is used as a light receiving surface, high-power laser beams are reflected to a water-cooled wall, and heat is taken away through circulating cooling water. The water temperature and the flow of the water inlet and the water outlet of the light receiving equipment are measured, and the laser power can be roughly calculated by utilizing the law of energy conservation.
The calculation principle is as follows: according to the working environment temperature of the system, the water adopted by the water chiller is determined as cooling liquid, the corresponding specific heat capacity is c =4.2KJ/Kg ℃, and the density is rho =1000Kg/m 3 . According to the law of conservation of energy, the following relationship exists among the laser beam power P, the inlet temperature T1 of cooling water, the outlet temperature T2 and the flow Q of the cooling water: pt = cm Δ T = c ρ Qt (T2-T1), and thus the laser beam power can be calculated by measuring only the flow rate of the cooling water and the inlet/outlet water temperature.
The utility model provides a receive the interior structure cooperation design through recirculated cooling water groove and photic centrum of a section of thick bamboo, reached the effect of rapid cooling and extinction, and lead to recirculated cooling water through connecting water-cooling equipment, adopt recirculated cooling water to take away laser energy, realized the receipts light function of the super high power laser more than ten thousand watts.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for limiting the same, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A light receiving device for high-power optical fiber laser above ten thousand watt level is characterized in that: the device comprises a light receiving cylinder, a circulating water system and a measuring sensor which are used for cooling and cooling the light receiving cylinder in a circulating way, a water flowmeter used for calculating the power of a laser beam, a data acquisition board and a data processing terminal; the light receiving cylinder comprises a light receiving cylinder body (1) and a rear cover (2), and the rear end face of the rear cover (2) corresponding to the light receiving cylinder body (1) is connected to the light receiving cylinder body (1); the rear end face of the light receiving cylinder body (1) is inwards provided with a circular-section circulating cooling water tank (3), the front end face is inwards provided with a circular-section laser reflection tank (4), and the circulating cooling water tank (3) is positioned outside the laser reflection tank (4); a light receiving cone frame (5) with a wall thickness is arranged between the circulating cooling water tank (3) and the laser reflection tank (4), a light receiving cone (6) is arranged on the rear end face of the light receiving cone frame (5), and a conical light receiving face (7) on the light receiving cone (6) is arranged towards the front end face of the light receiving cylinder body (1).
2. The optical receiver for high power fiber laser above the level of ten-thousand watts according to claim 1, wherein: the side wall of the light receiving cylinder body (1) is provided with two circulating water holes (8) which are communicated with the circulating cooling water tank (3), and the measuring sensor comprises a water inlet temperature sensor and a water outlet temperature sensor and is respectively connected to the circulating water holes (8) on the two sides of the light receiving cylinder through pipelines; the water outlet temperature sensor is further connected with a water flowmeter through a pipeline, the circulating water system is respectively connected with the water inlet temperature sensor and the water flowmeter through pipelines, the water inlet temperature sensor, the water outlet temperature sensor and the water flowmeter are all electrically connected with a data acquisition board, and the data acquisition board is electrically connected with a data processing terminal.
3. The light collecting device for high power fiber laser of above ten-thousand watts according to claim 1, characterized in that: the light receiving cone (6) is detachably connected to the rear end face of the light receiving cone frame (5) through a bolt.
4. The optical receiver for high power fiber laser above the level of ten-thousand watts according to claim 1, wherein: the rear end face of the light cone (6) is a plane, and a gap is formed between the rear end face and the inner end face of the rear cover (2).
5. A light receiving device for high power fiber laser above the level of ten thousand watts according to any one of claims 1, 3 and 4, wherein: the light receiving cone (6) is made of copper materials, and a gold-plated layer is arranged on the surface of the conical light receiving surface (7) on the light receiving cone (6).
6. The light collecting device for high power fiber laser of above ten-thousand watts according to claim 1, characterized in that: the rear end outer edge face of the light receiving cylinder body (1) is further provided with a sealing groove, a rubber sealing ring (9) is arranged in the sealing groove, and the rear cover (2) and the light receiving cylinder body (1) are fixedly and hermetically connected through bolts and the rubber sealing ring (9).
7. A light receiving device for high power fiber laser above ten-thousand watt level according to claim 1 or 6, characterized in that: the light receiving cylinder body (1) is made of aluminum alloy materials, and a black oxidation treatment layer is arranged on the outer surface of the light receiving cylinder body.
8. The light collecting device for high power fiber laser of above ten-thousand watts according to claim 1, characterized in that: and a black light absorption material coating layer is arranged on the inner surface of the light receiving cone frame (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221416831.3U CN218386174U (en) | 2022-06-08 | 2022-06-08 | Light receiving device for high-power optical fiber laser above ten-thousand watt level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221416831.3U CN218386174U (en) | 2022-06-08 | 2022-06-08 | Light receiving device for high-power optical fiber laser above ten-thousand watt level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218386174U true CN218386174U (en) | 2023-01-24 |
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ID=84958886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221416831.3U Active CN218386174U (en) | 2022-06-08 | 2022-06-08 | Light receiving device for high-power optical fiber laser above ten-thousand watt level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218386174U (en) |
-
2022
- 2022-06-08 CN CN202221416831.3U patent/CN218386174U/en active Active
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