Multi-connected multi-section carbon dioxide laser tube

Abstract

The utility model relates to the technical field of laser tubes, in particular to a multi-connected multi-section type carbon dioxide laser tube which comprises at least two laser tube bodies. The two adjacent laser tube bodies are connected end to end through a U-shaped tube; the two corners of the U-shaped tube are respectively provided with a first holophote, and the resonant cavities of the laser tube bodies are connected to be concentric through the first holophotes. N first electrode groups are mounted in the middle of the resonant cavity of each laser tube body, each first electrode group comprises two first electrodes, and n is greater than or equal to 1; the n first electrode groups divide the discharge distance of each laser tube body into n + 1 sections; and each section of discharge distance is coaxial and independently supplies power. According to the utility model, when laser with higher power is output, the striking voltage and the striking current of the laser tube can be reduced, and the breakdown proportion of the laser tube can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of laser tubes, and more specifically to a multi-link multi-section carbon dioxide laser tube. Background Art

[0002] The output power of the current CO2 laser tube is proportional to the length of the laser tube. When high-power laser output is required, the laser tube needs to be made very long. This is because the longer the laser tube, the higher the laser output power. However, in this case, the operating voltage of the laser tube will increase accordingly, and the ignition voltage will also increase significantly. The glass next to the high-voltage electrode will be subjected to a higher voltage, and the glass will be easily broken down, causing damage to the laser tube. At the same time, the high-voltage power supply line and the laser power supply will also be subjected to a higher voltage, and the damage rate of the laser power supply will also increase; the longer the laser tube, the higher the ignition current, the unstable output power before ignition, and the sharp increase in output power after ignition, which can easily cause nonlinear laser power output.

[0003] Therefore, how to reduce the starting voltage and starting current of the laser tube and reduce the breakdown rate of the laser tube while ensuring the output of higher power laser is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the utility model provides a multi-link multi-section carbon dioxide laser tube, which can reduce the starting voltage and starting current of the laser tube and reduce the proportion of laser tube breakdown when outputting higher power laser.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multi-linked multi-section carbon dioxide laser tube, comprising: at least two laser tube bodies; the ends of two adjacent laser tube bodies are connected by a U-shaped tube; a first total reflection mirror is respectively installed at two corners of the U-shaped tube, and the first total reflection mirror connects the resonant cavities of the laser tube bodies to be concentric;

[0007] n first electrode groups are installed in the middle of the resonant cavity of each laser tube body, each first electrode group includes two first electrodes, n≥1; the n first electrode groups divide the discharge distance of each laser tube body into n+1 sections; each discharge distance is coaxial and powered separately.

[0008] Furthermore, the laser tube body is provided with a second electrode group, the second electrode group includes two second electrodes, which are respectively located at the head and tail ends of the laser tube body; the laser tube body includes a discharge tube, a water cooling tube and a gas storage tube which are coaxially sleeved from the inside to the outside; the gas storage tube is one, and the discharge tube and the water cooling tube are respectively multiple sections; two adjacent sections of the discharge tube and the water cooling tube are arranged at intervals, and each section of the discharge tube and the water cooling tube corresponds to a discharge distance; the two first electrodes in each group of the first electrode group are respectively located between two adjacent sections of the discharge distance, and are respectively connected to the two adjacent sections of the discharge tube;

[0009] A water inlet pipe and a water outlet pipe are respectively installed at both ends of the water cooling pipe at each discharge distance, and the water inlet pipe and the water outlet pipe are respectively extended to the outside of the gas storage pipe;

[0010] A spiral air return pipe is arranged on the outer periphery of the water cooling pipe at each discharge distance, and the spiral air return pipe connects the discharge tube and the gas storage pipe at the discharge distance.

[0011] Furthermore, a second total reflection mirror is installed on the tube mouth of the laser tube body located at the head, and an output mirror is installed on the tube mouth of the laser tube body located at the tail.

[0012] Furthermore, the laser output power of the laser tube body is the laser output power at any discharge distance, or the sum of the laser output powers at any multiple discharge distances.

[0013] Furthermore, the two first total reflection mirrors in the U-shaped tube each form an angle of 45° with the resonant cavity of the laser tube body.

[0014] Furthermore, two corners of the U-shaped tube are wrapped with insulating sleeves, and the first total reflection mirror is enclosed in the insulating sleeves.

[0015] Furthermore, a heat sink is arranged in the insulating sleeve, and the heat sink is arranged close to the first total reflection mirror to take away the heat generated when the first total reflection mirror is working.

[0016] Furthermore, the radiator is a water circulation radiator.

[0017] Furthermore, the insulating sleeve is filled with insulating thermally conductive material, and metal particles are added into the insulating thermally conductive material.

[0018] It can be seen from the above technical solution that compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model adds an electrode in the middle of the resonant cavity of a laser tube body, divides the original discharge distance between the two electrodes into two or more sections, and then connects two or more laser tube bodies with multi-section discharge by a U-shaped tube, and reflects the laser through the total reflection mirrors at the two corners of the U-shaped tube, so as to realize the concentric connection of the resonant cavities of the two or more laser tubes. Under the premise of ensuring a higher laser tube output power, the utility model reduces the operating voltage by multi-section discharge, reduces the proportion of laser tube breakdown, improves the response speed of the laser tube, reduces the breakage rate of the laser tube, and prolongs the service life of the laser tube; at the same time, it can also discharge in sections, partially output power, and improve the laser output power curve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the structure of two laser tube bodies provided by the utility model connected by a U-shaped tube;

[0022] Figure 2 The utility model provides a schematic structural diagram of two two-section laser tube bodies connected by a U-shaped tube. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] The utility model discloses a carbon dioxide laser tube, comprising at least two laser tube bodies, wherein the ends of two adjacent laser tube bodies are connected by a U-shaped tube; a first total reflection mirror is respectively installed at two corners of the U-shaped tube, and the first total reflection mirror connects the resonant cavities of the laser tube bodies to be concentric.

[0026] like Figure 1 As shown, two laser tube bodies are taken as an example to explain the utility model in detail.

[0027] In this embodiment, the tube shell of one of the laser tube bodies is made of high borosilicate glass and is a three-layer sleeve structure. The central layer is a discharge tube 4, and second electrode groups are arranged at both ends of the discharge tube 4, namely, a second electrode 2 and a second electrode 9; the middle layer is a water cooling tube 5, and a water inlet pipe 8 and a water outlet pipe 3 are arranged at both ends of the water cooling tube 5; the outermost layer is a gas storage tube 6; a spiral gas return pipe 7 is arranged on the periphery of the water cooling tube 5, and the spiral gas return pipe 7 is connected to the discharge tube 4 and the gas storage tube 6.

[0028] The tube shell of the other laser tube body is also made of high borosilicate glass and is a three-layer sleeve structure. The central layer is the discharge tube 18; second electrode groups are arranged at both ends of the discharge tube 18, namely the second electrode 13 and the second electrode 20; the middle layer is the water cooling tube 17, and the water inlet pipe 14 and the water outlet pipe 19 are arranged at both ends of the water cooling tube 17; the outermost layer is the gas storage tube 16, and a spiral gas return pipe 15 is arranged on the outer periphery of the water cooling tube, and the spiral gas return pipe is connected to the discharge tube and the gas storage tube.

[0029] The two laser tube bodies are connected by a U-shaped tube 11, and two first total reflection mirrors are arranged at the two corners of the U-shaped tube 11, namely the first total reflection mirror 10 and the first total reflection mirror 12. The output mirror 1 and the second total reflection mirror 21 are arranged on the tube mouths at both ends respectively. The output power of the laser tube body is proportional to the length of the laser tube. The distance between the electrode 2 and the electrode 9 is L1, and the output power is W1. The distance between the electrode 13 and the electrode 20 is L2, and the output power is W2. When the electrode 2 and the electrode 9 are powered separately, the output power is W1, and when the second electrode 13 and the second electrode 20 are powered separately, the output power is W2. When the second electrode 2, the second electrode 9, the second electrode 13, and the second electrode 20 are powered at the same time, the output power is W1+W2=W.

[0030] Example 2

[0031] The structure of the laser tube body of this embodiment is similar to that of the embodiment 1, except that, in each laser tube body, there is one gas storage tube, and the discharge tube and the water cooling tube are respectively multiple sections; two adjacent sections of the discharge tube and the water cooling tube are arranged at intervals, and each section of the discharge tube and the water cooling tube corresponds to a section of the discharge distance; the two first electrodes in each group of the first electrode groups are respectively located between two adjacent sections of the discharge distance, and are respectively connected to the two adjacent sections of the discharge tube;

[0032] A water inlet pipe and a water outlet pipe are installed at both ends of the water cooling pipe under each discharge distance, and the water inlet pipe and the water outlet pipe extend to the outside of the gas storage pipe respectively;

[0033] A spiral air return pipe is arranged on the outer periphery of the water cooling pipe at each discharge distance, and the spiral air return pipe connects the discharge tube and the gas storage pipe at the discharge distance.

[0034] The second total reflection mirror is installed on the tube mouth of the laser tube body at the head, and the output mirror is installed on the tube mouth of the laser tube body at the tail. The laser output power of the laser tube body is the laser output power at any discharge distance, or the sum of the laser output powers at any multiple discharge distances.

[0035] More advantageously, the two corners of the U-shaped tube are wrapped with insulating sleeves, the insulating sleeves are filled with insulating heat-conducting materials, and metal particles are added to the insulating heat-conducting materials. The first total reflector is enclosed in the insulating sleeve. A radiator is arranged in the insulating sleeve, and the radiator is arranged close to the first total reflector. The radiator is a water circulation radiator, which is used to take away the heat generated by the first total reflector when it is working.

[0036] The following takes two multi-section laser tube bodies as an example to further illustrate the above structure of the utility model.

[0037] like Figure 2 As shown, this embodiment includes two laser tube bodies, each of which is divided into two discharge distances. In one of the laser tube bodies, electrodes 22 and 23 are added to the resonant cavity of the laser tube body, and the central layer is a discharge tube 401 and a discharge tube 402, the second electrode 2 and the first electrode 22 are arranged at both ends of the discharge tube 401, and the first electrode 23 and the electrode 9 are arranged at both ends of the discharge tube 402; the middle layer is a water cooling tube 501 and a water cooling tube 502, the water cooling tube 501 is arranged at both ends of the water cooling tube 801 and the water outlet pipe 301, and the water cooling tube 502 is arranged at both ends of the water cooling tube 502. The outermost layer is a gas storage pipe 6, a spiral gas return pipe 701 connected to the discharge tube 401, and a spiral gas return pipe 702 connected to the discharge tube 402.

[0038] The tube shell of the other laser tube body is also made of high borosilicate glass, and is a three-layer sleeve structure, with the first electrode 24 and the first electrode 25 added in the middle of the laser tube body. The central layer is the discharge tube 403 and the discharge tube 404, with the second electrode 13 and the first electrode 25 arranged at both ends of the discharge tube 403, and the first electrode 24 and the second electrode 20 arranged at both ends of the discharge tube 404; the middle layer is the water cooling tube 503 and the water cooling tube 504, with the water inlet pipe 803 and the water outlet pipe 303 arranged at both ends of the water cooling tube 503, and the water inlet pipe 804 and the water outlet pipe 304 arranged at both ends of the water cooling tube 504; the outermost layer is the gas storage tube 16, the spiral gas return pipe 703 connected to the discharge tube 403, and the spiral gas return pipe 704 connected to the discharge tube 404.

[0039] The two laser tube bodies are connected by a U-shaped tube 11, and a first total reflection mirror 10 and a first total reflection mirror 12 are arranged at two corners of the U-shaped tube 11 to connect the resonant cavities of the two laser tube bodies to be concentric; an output mirror 1 and a second total reflection mirror 21 are respectively arranged on the tube mouths of the two laser tube bodies, and the laser beam emitted by one of the laser tubes after being powered on is reflected by the first total reflection mirrors 12 and 10 in sequence to the resonant cavity of the other laser tube, and after being superimposed with the laser beam of the other laser tube, it is output through the output mirror.

[0040] The first total reflection mirror 10 is enclosed in an insulating sleeve 26 and filled with insulating heat-conducting material 27. Metal particles 28 are added to the insulating heat-conducting material 27 to increase the thermal conductivity of the insulating filler. The heat generated by the first total reflection mirror 10 when working is circulated away by the water inlet and outlet 29 and the water inlet and outlet 30 of the radiator.

[0041] The first total reflection mirror 12 is also enclosed in an insulating sleeve and filled with insulating heat-conductive material. Metal particles are added into the insulating heat-conductive material to increase the thermal conductivity of the insulating filler.

[0042] The distance between electrode 2 and electrode 22 is L1, the distance between electrode 23 and electrode 9 is L2, the distance between electrode 13 and electrode 25 is L3, and the distance between electrode 24 and electrode 20 is L4, L1+L2+L3+L4=L; when power is supplied separately between electrode 2 and electrode 22, the output power is W1, when power is supplied separately between electrode 23 and electrode 9, the output power is W2, when power is supplied separately between electrode 13 and electrode 25, the output power is W3, and when power is supplied separately between electrode 24 and electrode 20, the output power is W4. When power is supplied to electrode 2, electrode 22 and electrode 23, electrode 9 and electrode 13, electrode 25 and electrode 24, and electrode 20 at the same time, the output power is W1+W2+W3+W4=W.

[0043] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-link multi-section carbon dioxide laser tube, characterized in that: include: At least two laser tube bodies; the ends of two adjacent laser tube bodies are connected by a U-shaped tube; a first total reflection mirror is installed at two corners of the U-shaped tube respectively, and the first total reflection mirror connects the resonant cavities of the laser tube bodies to be concentric; n first electrode groups are installed in the middle of the resonant cavity of each laser tube body, each first electrode group includes two first electrodes, n≥1; the n first electrode groups divide the discharge distance of each laser tube body into n+1 sections; each discharge distance is coaxial and powered separately.

2. The multi-link multi-section carbon dioxide laser tube according to claim 1, characterized in that: The laser tube body is provided with a second electrode group, the second electrode group includes two second electrodes, which are respectively located at the head and tail ends of the laser tube body; the laser tube body includes a discharge tube, a water cooling tube and a gas storage tube which are coaxially sleeved from the inside to the outside; there is one gas storage tube, and the discharge tube and the water cooling tube are respectively multiple sections; two adjacent sections of the discharge tube and the water cooling tube are arranged at intervals, and each section of the discharge tube and the water cooling tube corresponds to a discharge distance; the two first electrodes in each group of the first electrode group are respectively located between two adjacent sections of the discharge distance, and are respectively connected to the two adjacent sections of the discharge tube; A water inlet pipe and a water outlet pipe are respectively installed at both ends of the water cooling pipe at each discharge distance, and the water inlet pipe and the water outlet pipe are respectively extended to the outside of the gas storage pipe; A spiral air return pipe is arranged on the outer periphery of the water cooling pipe at each discharge distance, and the spiral air return pipe connects the discharge tube and the gas storage pipe at the discharge distance.

3. The multi-link multi-section carbon dioxide laser tube according to claim 1, characterized in that: A second total reflection mirror is installed on the tube mouth of the laser tube body located at the head, and an output mirror is installed on the tube mouth of the laser tube body located at the tail.

4. The multi-link multi-section carbon dioxide laser tube according to claim 1, characterized in that: The laser output power of the laser tube body is the laser output power at any discharge distance, or the sum of the laser output powers at any multiple discharge distances.

5. The multi-link multi-section carbon dioxide laser tube according to claim 1, characterized in that: The two first total reflection mirrors in the U-shaped tube respectively form an angle of 45° with the resonant cavity of the laser tube body.

6. The multi-link multi-section carbon dioxide laser tube according to claim 1, characterized in that: Two corners of the U-shaped tube are wrapped with insulating sleeves, and the first total reflection mirror is enclosed in the insulating sleeves.

7. The multi-link multi-section carbon dioxide laser tube according to claim 6, characterized in that: A radiator is arranged in the insulating sleeve and is arranged close to the first total reflection mirror to take away the heat generated when the first total reflection mirror is working.

8. The multi-link multi-section carbon dioxide laser tube according to claim 7, characterized in that: The radiator is a water circulation radiator.

9. The multi-link multi-section carbon dioxide laser tube according to claim 6, characterized in that: The insulating sleeve is filled with an insulating heat-conducting material, and metal particles are added into the insulating heat-conducting material.

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