Carbon dioxide laser tube

Abstract

The utility model discloses a carbon dioxide laser tube. The carbon dioxide laser tube comprises a first discharge tube core assembly, a second discharge tube core assembly, a first turn-back mirror, a second turn-back mirror, a pi-shaped connecting tube and a cooling assembly, the cooling assembly comprises a shell, a cooling sleeve and insulating oil; one end of the first discharge tube core assembly is connected with one end of the pi-shaped connecting tube; the other end of the pi-shaped connecting tube is connected with one end of the second discharge tube core assembly; the first turn-back mirror and the second turn-back mirror are installed at the two right-angle positions of the pi-shaped connecting pipe respectively. The pi-shaped connecting pipe is mounted in the shell; the insulating oil is filled between the shell and the pi-shaped connecting pipe; the cooling sleeve is installed on the shell in a sealed mode, and at least one face of the cooling sleeve makes contact with the insulating oil. According to the carbon dioxide laser tube provided by the utility model, the cooling and insulating effects of the turn-back mirror are better.

Description

Technical Field

[0001] This utility model relates to the field of laser tube technology, and more specifically to a carbon dioxide laser tube. Background Technology

[0002] Existing low-power carbon dioxide laser tubes with glass structures use a collimated discharge tube filled with laser working gas as the light source. The output laser power is 60-70 watts per meter of discharge tube length, with higher power output for longer tubes. However, when the tube length exceeds 2 meters, collimation becomes difficult to guarantee, the technical difficulty of glass sintering and thermal processing increases, and numerous safety hazards arise in packaging, transportation, and on-site installation and commissioning, thus limiting its practical application in many important fields. To overcome the impracticality of excessively long tubes, existing technology connects the ends of two discharge tubes via a connecting channel, with a reflecting mirror installed inside the connecting channel to link the optical path between the two discharge tubes.

[0003] Most folding mirrors are used in pairs with a large gap. Since the folding mirrors are conductors, they carry high voltage when the laser tube is operating. When cooling the folding mirrors, it is crucial to prevent the high voltage from discharging into the equipment or cooling water, which could damage the laser tube or the equipment. Current technology offers two methods for cooling folding mirrors: first, installing metal heat sinks on the folding mirrors for air cooling; second, installing water-cooled jackets made of insulating material. However, due to the large gap and irregular shape of the two folding mirrors, it is difficult to completely seal them off, regardless of whether air cooling or water-cooled jackets are used, resulting in poor cooling and insulation performance.

[0004] Therefore, how to provide a carbon dioxide laser tube with a better cooling and insulation effect of its folding mirror is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a carbon dioxide laser tube with a better cooling and insulation effect of its folding mirror.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A carbon dioxide laser tube includes a first discharge die assembly, a second discharge die assembly, a first folding mirror, a second folding mirror, a π-type connecting tube, and a cooling assembly;

[0008] The cooling assembly includes a housing, a cooling jacket, and insulating oil;

[0009] One end of the first discharge die assembly is connected to one end of the π-type connecting tube;

[0010] The other end of the π-shaped connecting pipe is connected with one end of the second discharge tube core assembly;

[0011] The first and second return mirrors are respectively installed at two right angles of the π-shaped connecting pipe;

[0012] The π-shaped connecting pipe is installed in the shell;

[0013] The insulating oil is filled between the shell and the π-shaped connecting pipe;

[0014] The cooling jacket is sealingly installed on the shell, and at least one side of the cooling jacket is in contact with the insulating oil.

[0015] Preferably, the cooling jacket comprises an inlet pipe and an outlet pipe;

[0016] The inlet pipe is in communication with an external water source through a first through hole on the shell;

[0017] The outlet pipe discharges the external water source through a second through hole on the shell.

[0018] Preferably, the first discharge tube core assembly comprises an output mirror, a first cathode cylinder, a first discharge tube, a first cooling jacket, a first gas storage tube and a first anode cylinder;

[0019] The second discharge tube core assembly comprises a full reflection mirror, a second cathode cylinder, a second discharge tube, a second cooling jacket, a second gas storage tube and a second anode cylinder;

[0020] The first cooling jacket is sealingly sintered on the outer periphery of the first discharge tube;

[0021] The first gas storage tube is sealingly sintered and packaged on the outer periphery of the first cooling jacket;

[0022] The first cathode cylinder is installed at one end of the first discharge tube away from the π-shaped connecting pipe;

[0023] The first anode cylinder is installed at one end of the first discharge tube close to the π-shaped connecting pipe;

[0024] The second cooling jacket is sealingly sintered on the outer periphery of the second discharge tube;

[0025] The second gas storage tube is sealingly sintered and packaged on the outer periphery of the second cooling jacket;

[0026] The second cathode cylinder is installed at one end of the second discharge tube away from the π-shaped connecting pipe;

[0027] The second anode cylinder is installed at one end of the second discharge tube close to the π-shaped connecting pipe;

[0028] The output mirror is installed at one end of the first discharge tube core assembly away from the π-shaped connecting tube;

[0029] The full reflection mirror is installed at one end of the second discharge tube core assembly away from the π-shaped connecting tube.

[0030] Preferably, the first discharge tube core assembly further comprises a first gas return tube; and the second discharge tube core assembly further comprises a second gas return tube;

[0031] The first gas return tube is installed on the first cold water jacket;

[0032] One end of the first gas return tube is in communication with the first discharge tube, and the other end is in communication with the first gas storage tube;

[0033] The second gas return tube is installed on the second cold water jacket;

[0034] One end of the second gas return tube is in communication with the second discharge tube, and the other end is in communication with the second gas storage tube.

[0035] Preferably, the first anode cylinder is connected to the high-voltage positive electrode through a metal lead;

[0036] The second anode cylinder is connected to the high-voltage positive electrode through a metal lead;

[0037] The first cathode cylinder is connected to the cathode through a metal lead;

[0038] The second cathode cylinder is connected to the cathode through a metal lead.

[0039] Preferably, the first cathode cylinder, the first anode cylinder, the second cathode cylinder and the second anode cylinder are made of any one of nickel, aluminum, molybdenum, titanium and silver-copper alloy.

[0040] Preferably, the first discharge tube, the first cold water jacket, the first gas storage tube and the first gas return tube are made of glass material;

[0041] The second discharge tube, the second cold water jacket, the second gas storage tube and the second gas return tube are made of glass material.

[0042] Preferably, the carbon dioxide laser tube further comprises a first connecting ring, a first anode terminal, a second connecting ring and a second anode terminal installed in the shell;

[0043] One end of the first discharge tube core assembly is connected to one end of the π-shaped connecting tube through the first connecting ring;

[0044] The other end of the π-shaped connecting tube is connected to one end of the second discharge tube core assembly through the second connecting ring;

[0045] One end of the inside of the first connecting ring is connected with the first anode cylinder; the other end is connected with one end of the π-shaped connecting pipe;

[0046] The outside of the first connecting ring is connected with the first anode terminal post;

[0047] One end of the inside of the second connecting ring is connected with the second anode cylinder; the other end is connected with the other end of the π-shaped connecting pipe;

[0048] The outside of the second connecting ring is connected with the second anode terminal post.

[0049] Preferably, the first connecting ring and the second connecting ring are both made of metal material.

[0050] Preferably, the first anode terminal post and the second anode terminal post are both made of metal material.

[0051] According to the above technical solution, compared with the prior art, the utility model discloses a carbon dioxide laser pipe, and the cooling and insulation effect of the return mirror is better. BRIEF DESCRIPTION OF DRAWINGS

[0052] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the provided drawings without creative labor.

[0053] Figure 1 The utility model provides a carbon dioxide laser pipe's structural schematic diagram.

[0054] Wherein, first discharge tube core assembly 1;Output mirror 111;First cathode cylinder 12;First discharge tube 13;First cold water jacket 14;First gas storage pipe 15;First gas return pipe 16;First anode cylinder 17;First connecting ring 18, first anode terminal post 19;Second discharge tube core assembly 1';Full mirror 112;Second cathode cylinder 12';Second discharge tube 13';Second cold water jacket 14';Second gas storage pipe 15';Second gas return pipe 16';Second anode cylinder 17';Second connecting ring 18';Second anode terminal post 19';First return mirror 2;Second return mirror 2';π-shaped connecting pipe 3;Cooling assembly 4;Shell 41;Cooling jacket 42;Water inlet pipe 421;Water outlet pipe 422;Insulating oil 43; DETAILED DESCRIPTION

[0055] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the present utility model.

[0056] As shown in the figure, Figure 1 The utility model discloses a carbon dioxide laser tube, including first discharge tube core subassembly 1, second discharge tube core subassembly 1', first return mirror 2, second return mirror 2', π type connecting pipe 3 and cooling assembly 4;

[0057] Cooling assembly 4 includes casing 41, cooling jacket 42 and insulating oil 43;

[0058] One end of first discharge tube core subassembly 1 is connected with one end of π type connecting pipe 3;

[0059] The other end of π type connecting pipe 3 is connected with one end of second discharge tube core subassembly 1';

[0060] First return mirror 2 and second return mirror 2' are installed at two right angles of π type connecting pipe 3 respectively;

[0061] π type connecting pipe 3 is installed in casing 41;

[0062] Insulating oil 43 is filled between casing 41 and π type connecting pipe 3;

[0063] Cooling jacket 42 is sealingly installed on casing 41, and at least one side of cooling jacket 42 is in contact with insulating oil 43.

[0064] It can be understood that two return mirrors are installed at two right angles of π type connecting pipe for reflecting the laser emitted by one discharge tube core subassembly into another discharge tube core subassembly.

[0065] It can be understood that one side of casing 41 close to two discharge tube core subassemblies is provided with two mounting ports, and two ends of π type connecting pipe 3 sealingly pass through the two mounting ports and are connected with two discharge tube core subassemblies.

[0066] In an embodiment, cooling jacket 42 includes water inlet pipe 421 and water outlet pipe 422;

[0067] Water inlet pipe 421 is communicated with external water source through first through hole on casing 41;

[0068] Water outlet pipe 422 discharges external water source through second through hole on casing 41.

[0069] It can be understood that the water inlet pipe 421 and the water outlet pipe 422 are fixed on the shell 41, the cooling jacket 42 is cooled by the external cooling water flowing in the water inlet pipe 421 and the water outlet pipe 422, and the cooling jacket 42 cools the two return mirrors and the π-shaped connecting pipe 3 through the insulating oil 43, that is, the insulating oil 43 can conduct the heat generated by the two return mirrors and the π-shaped connecting pipe 3 to the cooling jacket 42, and the conducted heat is taken out of the laser tube along with the flowing external cooling water (the cooling water enters the cooling jacket 42 through the water inlet pipe 421 and flows out from the water outlet pipe 422); so as to reduce the temperature of the two return mirrors and the π-shaped connecting pipe 3.

[0070] It can be understood that since the two return mirrors of the utility model are filled with insulating oil 43, the return mirrors can prevent the equipment from discharging, so as to avoid the laser tube or the equipment from being damaged.

[0071] In an embodiment, the first discharge tube core assembly 1 comprises an output mirror 111, a first cathode cylinder 12, a first discharge tube 13, a first cold water jacket 14, a first gas storage pipe 15 and a first anode cylinder 17;

[0072] The second discharge tube core assembly 1' comprises a full reflection mirror 112, a second cathode cylinder 12', a second discharge tube 13', a second cold water jacket 14', a second gas storage pipe 15' and a second anode cylinder 17';

[0073] The first cold water jacket 14 is sealed and sintered on the outer periphery of the first discharge tube 13;

[0074] The first gas storage pipe 15 is sealed and sintered and packaged on the outer periphery of the first cold water jacket 14;

[0075] The first cathode cylinder 12 is installed at one end of the first discharge tube 13 away from the π-shaped connecting pipe 3;

[0076] The first anode cylinder 17 is installed at one end of the first discharge tube 13 close to the π-shaped connecting pipe 3;

[0077] The second cold water jacket 14' is sealed and sintered on the outer periphery of the second discharge tube 13';

[0078] The second gas storage pipe 15' is sealed and sintered and packaged on the outer periphery of the second cold water jacket 14';

[0079] The second cathode cylinder 12' is installed at one end of the second discharge tube 13' away from the π-shaped connecting pipe 3;

[0080] The second anode cylinder 17' is installed at one end of the second discharge tube 13' close to the π-shaped connecting pipe 3;

[0081] The output mirror 111 is installed at one end of the first discharge tube core assembly 1 away from the π-shaped connecting tube 3.

[0082] The full reflection mirror 112 is installed at one end of the second discharge tube core assembly 1' away from the π-shaped connecting tube 3.

[0083] It can be understood that:

[0084] The two gas storage tubes store the working gas (carbon dioxide) required by the discharge tube;

[0085] Both of the two cold water jackets are provided with water inlets and outlets; the water inlets are communicated with external cold water sources, and the cold water enters the cold water jackets to contact the outer surface of the discharge tube to cool the discharge tube;

[0086] The full reflection mirror 112 can reflect all the laser emitted from the discharge tube, can deliver all the laser emitted from the two discharge tubes to the output mirror, and can increase the length of the resonant cavity to improve the power while making all the laser output from the output mirror 111.

[0087] In an embodiment, the first discharge tube core assembly 1 further comprises a first gas return tube 16; and the second discharge tube core assembly 1' further comprises a second gas return tube 16';

[0088] The first gas return tube 16 is installed on the first cold water jacket 14;

[0089] One end of the first gas return tube 16 is communicated with the first discharge tube 13, and the other end is communicated with the first gas storage tube 15;

[0090] The second gas return tube 16' is installed on the second cold water jacket 14';

[0091] One end of the second gas return tube 16' is communicated with the second discharge tube 13', and the other end is communicated with the second gas storage tube 15'.

[0092] In an embodiment, the first anode cylinder 17 is connected with a high-voltage positive electrode through a metal lead wire;

[0093] The second anode cylinder 17' is connected with a high-voltage positive electrode through a metal lead wire;

[0094] The first cathode cylinder 12 is connected with a cathode through a metal lead wire;

[0095] The second cathode cylinder 12' is connected with a cathode through a metal lead wire.

[0096] Further, the metal lead wire is a titanium wire or a nickel wire.

[0097] In some embodiments, the first cathode cylinder 12, the first anode cylinder 17, the second cathode cylinder 12' and the second anode cylinder 17' are made of any one of nickel, aluminum, molybdenum, titanium and silver-copper alloy.

[0098] In some embodiments, the first discharge tube 13, the first cooling jacket 14, the first gas storage tube 15 and the first gas return tube 16 are made of glass material.

[0099] The second discharge tube 13', the second cooling jacket 14', the second gas storage tube 15' and the second gas return tube 16' are made of glass material.

[0100] In some embodiments, the carbon dioxide laser tube further comprises a first connecting ring 18, a first anode terminal 19, a second connecting ring 18' and a second anode terminal 19' installed in the shell 41.

[0101] One end of the first discharge tube core assembly 1 is connected to one end of the π-shaped connecting tube 3 through the first connecting ring 18.

[0102] The other end of the π-shaped connecting tube 3 is connected to one end of the second discharge tube core assembly 1' through the second connecting ring 18'.

[0103] One end of the first connecting ring 18 inside is connected to the first anode cylinder 17, and the other end is connected to one end of the π-shaped connecting tube 3.

[0104] The outside of the first connecting ring 18 is connected to the first anode terminal 19.

[0105] One end of the second connecting ring 18' inside is connected to the second anode cylinder 17', and the other end is connected to the other end of the π-shaped connecting tube 3.

[0106] The outside of the second connecting ring 18' is connected to the second anode terminal 19'.

[0107] In this embodiment, the two connecting rings, the two anode terminals, the two turning mirrors and the π-shaped connecting tube in the shell 41 are immersed in the insulating oil 43, the cooling jacket 42 is sealingly installed on the shell 41, and at least one side of the cooling jacket 42 is in contact with the insulating oil 43. The insulating oil 43 can conduct heat from the two turning mirrors, the π-shaped connecting tube and the two connecting rings to the cooling jacket 42, and the heat is taken away by external cooling water through the water inlet pipe 421 and the water outlet pipe 422.

[0108] In some embodiments, the first connecting ring 18 and the second connecting ring 18' are made of metal material, preferably iron-nickel alloy.

[0109] In certain embodiments, the first anode terminal 19 and the second anode terminal 19' are both metallic material.

[0110] The working principle of the laser tube is as follows: when high voltage is applied to the cathode cylinder and the anode cylinder, the carbon dioxide in the discharge tube is excited, the excited carbon dioxide molecules release photons of specific wavelengths through energy level transition, the photons are amplified in the resonant cavity composed of the discharge tube, the π-shaped connecting pipe, the turnaround mirror, the total reflection mirror and the output mirror, and form laser output from one end of the output mirror. At the same time, in the process of continuous laser output, the cooling assembly provided by the utility model realizes better turnaround mirror cooling and insulation effect.

[0111] In summary, the area through which the light path in the discharge tube core assembly passes is the resonant cavity, the power of the laser is proportional to the length of the resonant cavity, the π-shaped connecting pipe communicates two discharge tube core assemblies, thereby increasing the length of the resonant cavity and improving the power; the cooling jacket is sealingly installed on the shell and is in contact with the insulating oil, the water inlet pipe and the water outlet pipe are outside the shell, cold water enters the cooling jacket through the water inlet pipe and flows out of the water outlet pipe to cool the cooling jacket, the insulating oil filled between the π-shaped connecting pipe and the shell transfers the heat generated by the two turnaround mirrors to the cooling jacket and is carried away (at the same time, the insulating oil also cools the π-shaped connecting pipe); the turnaround mirror is surrounded by the insulating oil, and the turnaround mirror with high voltage is surrounded by the insulating oil, which can prevent the turnaround mirror from discharging to the equipment.

[0112] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0113] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A carbon dioxide laser tube, characterized in that, It includes a first discharge die assembly (1), a second discharge die assembly (1'), a first folding mirror (2), and a second folding mirror (2'). π Type connecting pipe (3) and cooling assembly (4); The cooling assembly (4) includes a housing (41), a cooling jacket (42), and insulating oil (43). One end of the first discharge die assembly (1) is connected to the π Connect one end of the type connecting pipe (3); The π The other end of the type connecting tube (3) is connected to one end of the second discharge core assembly (1'); The first retroreflector (2) and the second retroreflector (2') are respectively installed on the π At the two right angles of the type connecting pipe (3); The π The type connecting pipe (3) is installed inside the housing (41); The insulating oil (43) fills the housing (41) and the π Between type connecting pipes (3); The cooling sleeve (42) is sealed and installed on the housing (41), and at least one side of the cooling sleeve (42) is in contact with the insulating oil (43).

2. A carbon dioxide laser tube according to claim 1, characterized in that, The cooling jacket (42) includes an inlet pipe (421) and an outlet pipe (422). The water inlet pipe (421) is connected to the external water source through the first through hole on the shell (41); The water outlet pipe (422) discharges the external water source through the second through hole on the housing (41).

3. A carbon dioxide laser tube according to claim 1, characterized in that, The first discharge tube core assembly (1) includes an output mirror (111), a first cathode cylinder (12), a first discharge tube (13), a first cold water jacket (14), a first gas storage pipe (15), and a first anode cylinder (17). The second discharge core assembly (1') includes a total reflection mirror (112), a second cathode cylinder (12'), a second discharge tube (13'), a second cold water jacket (14'), a second gas storage pipe (15'), and a second anode cylinder (17'). The first cold water jacket (14) is sintered on the outer periphery of the first discharge tube (13); The first gas storage pipe (15) is sealed and sintered around the outer periphery of the first cold water jacket (14); The first cathode cylinder (12) is installed away from the first discharge tube (13). π One end of the type connecting pipe (3); The first anode cylinder (17) is installed near the first discharge tube (13). π One end of the type connecting pipe (3); The second cooling water jacket (14') is sintered on the outer periphery of the second discharge tube (13'); The second gas storage pipe (15') is sealed and sintered around the outer periphery of the second cooling water jacket (14'); The second cathode cylinder (12') is mounted on the second discharge tube (13') away from the... π One end of the type connecting pipe (3); The second anode cylinder (17') is installed near the second discharge tube (13'). π One end of the type connecting pipe (3); The output mirror (111) is mounted on the first discharge die assembly (1) away from the [missing information]. π One end of the type connecting pipe (3); The total reflection mirror (112) is mounted on the second discharge die assembly (1') away from the [missing information]. π One end of the type connecting pipe (3).

4. A carbon dioxide laser tube according to claim 3, characterized in that, The first discharge core assembly (1) further includes a first return gas pipe (16); the second discharge core assembly (1') further includes a second return gas pipe (16'). The first return air pipe (16) is installed on the first cold water jacket (14); One end of the first return gas pipe (16) is connected to the first discharge pipe (13), and the other end is connected to the first gas storage pipe (15); The second return air pipe (16') is installed on the second cold water jacket (14'); One end of the second return gas pipe (16') is connected to the second discharge pipe (13'), and the other end is connected to the second gas storage pipe (15').

5. A carbon dioxide laser tube according to claim 3, characterized in that: The first anode cylinder (17) is connected to the high-voltage positive electrode via a metal lead; The second anode cylinder (17') is connected to the high-voltage positive electrode via a metal lead; The first cathode cylinder (12) is electrically connected to the cathode via a metal lead; The second cathode cylinder (12') is electrically connected to the cathode via a metal lead.

6. A carbon dioxide laser tube according to claim 3, characterized in that, The first cathode cylinder (12), the first anode cylinder (17), the second cathode cylinder (12'), and the second anode cylinder (17') are made of any one of nickel, aluminum, molybdenum, titanium, and silver-copper alloy.

7. A carbon dioxide laser tube according to claim 4, characterized in that, The first discharge tube (13), the first cold water jacket (14), the first gas storage tube (15), and the first return gas tube (16) are all made of glass. The second discharge tube (13'), the second cold water jacket (14'), the second gas storage tube (15'), and the second return gas tube (16') are all made of glass.

8. A carbon dioxide laser tube according to claim 3, characterized in that, It also includes a first connecting ring (18), a first anode terminal (19), a second connecting ring (18'), and a second anode terminal (19') installed inside the housing (41); One end of the first discharge die assembly (1) is connected to the first connecting ring (18) via the first connecting ring (18). π Connect one end of the type connecting pipe (3); The π The other end of the type connecting tube (3) is connected to one end of the second discharge core assembly (1') through the second connecting ring (18'); One end of the first connecting ring (18) is connected to the first anode cylinder (17); the other end is connected to the... π Connect one end of the type connecting pipe (3); The outside of the first connecting ring (18) is connected to the first anode terminal (19); One end of the second connecting ring (18') is connected to the second anode cylinder (17'); the other end is connected to the... π The other end of the type connecting pipe (3) is connected; The outside of the second connecting ring (18') is connected to the second anode terminal (19').

9. A carbon dioxide laser tube according to claim 8, characterized in that, Both the first connecting ring (18) and the second connecting ring (18') are made of metal.

10. A carbon dioxide laser tube according to claim 8, characterized in that, Both the first anode terminal (19) and the second anode terminal (19') are made of metal.

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