CN115752419A - Getter, exhaust pipe and anode integrated structure and laser gyroscope - Google Patents
Getter, exhaust pipe and anode integrated structure and laser gyroscope Download PDFInfo
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- CN115752419A CN115752419A CN202211417510.XA CN202211417510A CN115752419A CN 115752419 A CN115752419 A CN 115752419A CN 202211417510 A CN202211417510 A CN 202211417510A CN 115752419 A CN115752419 A CN 115752419A
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Abstract
The invention belongs to the laser gyro technology and discloses a getter, exhaust pipe and anode integrated structure and a laser gyro, wherein the getter, exhaust pipe and anode integrated structure comprises: the device comprises an exhaust terminal, two nickel belts and a getter; the exhaust terminal is cylindrical, and one end of the exhaust terminal is a hemispherical anode; the other end is provided with a blind hole as an exhaust pipe; an annular table is arranged on one side of the exhaust terminal close to the anode; the bottom of the blind hole extends to a position between the annular table and the anode, and the exhaust terminal is provided with vent holes along the radial direction to communicate the bottom of the blind hole with the outer surface of the exhaust terminal; the getter is annular, is sleeved on one side of the anode of the exhaust terminal and is welded and fixed on the lower end face of the annular table through two nickel belts.
Description
Technical Field
The invention belongs to the laser gyro technology, and particularly relates to a getter, an exhaust pipe and an anode integrated structure and a laser gyro.
Background
The laser gyroscope is an annular helium-neon laser which consists of a microcrystalline glass cavity, a cathode, an anode, an exhaust pipe, a getter and a reflector; the cathode, the anode and the exhaust pipe are connected with the cavity through the indium seal, the reflector is connected with the cavity through optical cement, and the getter is arranged in the cavity through a fixing device; the cathode and the anode are laser discharge mechanisms to form glow discharge in the cavity, and the anode is made of oxygen-free copper, titanium and the like; the exhaust pipe is used for connecting the inside of the cavity with external vacuum equipment to realize acquisition of an ultrahigh vacuum environment in the cavity and injection of gain gas, the exhaust pipe is usually made of oxygen-free copper or invar alloy, the exhaust pipe is clamped and sealed in a cold welding and clamping manner, and only a small section of the exhaust pipe is reserved on the cavity; the getter is usually made of titanium-molybdenum alloy or zirconium-based multi-element alloy, is fixed in the cavity through a fixing mechanism, and is heated and activated in a high-vacuum environment by high-frequency induction or laser irradiation to obtain the capability of absorbing impurity gases and absorb the impurity gases generated in the working process of the gyroscope.
The anode, the exhaust pipe and the getter of the traditional laser gyroscope are mainly configured in two ways: 1. the anode, the exhaust pipe and the getter are independent, and the laser gyroscope is used for a laser gyroscope with a large size and a low requirement on structural compactness. Generally, the getter is fixedly arranged in the gas storage hole in the center of the cavity through the elastic support, and the elastic support is in contact with and rubs against the gas storage hole, so that the glass of the gas storage hole is easy to crack and dust, and adverse effects are brought to the laser gyro; 2. the anode and the exhaust pipe are integrated into an exhaust anode, and the getter is independent, so that the laser gyroscope with the medium size and the compact structure is used. The anode and the exhaust pipe are integrated together, namely one anode is used as a discharging anode and is used as an air pumping and inflating pipeline, so that the two anodes are asymmetric in structure, the discharge voltage of the double anodes is asymmetric, and the precision improvement of the gyroscope is influenced. Meanwhile, the exhaust pipe and the anode discharge together, and tiny particles in the exhaust pipe can move into the cavity under the action of an electrophoresis effect, so that the precision stability of the gyroscope is influenced. Meanwhile, the getter and the wall of the gas storage hole generate cracks and dust, and adverse effects are brought to the laser gyroscope. The two schemes are not beneficial to improving the performance and the reliability of the laser gyro, and simultaneously limit the development of miniaturization and high precision of the laser gyro.
Disclosure of Invention
The purpose of the invention is: the getter, the exhaust pipe and the anode integrated mechanism can effectively reduce the adverse effect of the getter installation and the exhaust pipe on the laser gyro, improve the cleanliness in the laser gyro cavity and improve the discharge symmetry and the overall reliability of the laser gyro.
A getter, exhaust pipe and anode integrated structure comprising: the device comprises an exhaust terminal, two nickel belts and a getter;
the exhaust terminal is cylindrical, and one end of the exhaust terminal is a hemispherical anode; the other end is provided with a blind hole as an exhaust pipe;
an annular table is arranged on one side of the exhaust terminal close to the anode;
the bottom of the blind hole extends to a position between the annular table and the anode, and the exhaust terminal is provided with vent holes along the radial direction to communicate the bottom of the blind hole with the outer surface of the exhaust terminal;
the getter is annular and is sleeved on one side of the anode of the exhaust terminal, one end of the nickel strap is welded with the getter, and the other end of the nickel strap is welded on the lower end face of the annular table.
Further, the lower surface of the getter does not exceed the bottom plane of the hemispherical anode, and the annular getter is concentrically assembled with the anode without contact.
Furthermore, the roughness of the lower end face of the annular table is not more than 1.6 microns, a nickel band is welded on the inner ring of the lower end face, and the outer ring is sealed with the laser gyro cavity in an indium mode.
Further, the exhaust terminal is made of TU1 or TU2 oxygen-free copper or 4J36 invar alloy, and the exhaust pipe is used for cold welding and clamping sealing.
Further, the getter is activated by laser irradiation after the structure is mounted on a laser gyro.
A laser gyroscope, comprising: the laser gyroscope cavity, a cathode, two getters, an exhaust pipe and an anode are integrated;
one end of the laser gyroscope cavity is connected with the cathode, and two stepped holes are symmetrically formed in the laser gyroscope cavity and used as a cavity to be connected with the getter, the exhaust pipe and the anode integrated structure.
A laser gyroscope, comprising: the laser gyroscope comprises a laser gyroscope cavity, a cathode, a getter, an exhaust pipe and anode integrated structure and a universal anode;
the laser gyroscope cavity is connected with the cathode and the universal anode, a step hole is further formed in the laser gyroscope cavity and used as a cavity to be connected with the getter, the exhaust pipe and the anode integrated structure, and the getter, the exhaust pipe and the anode integrated structure are symmetrical about the universal anode.
A laser gyroscope, comprising: the laser gyroscope cavity, the two cathodes, the getter, the exhaust pipe and the anode are of an integrated structure;
one end of the cavity of the laser gyroscope is connected with the getter, the exhaust pipe and the anode integrated structure;
the cavity of the laser gyroscope is also symmetrically connected with the two cathodes.
The invention has the beneficial effects that: the function integration of the getter, the exhaust pipe and the anode of the laser gyroscope is realized, the contact and friction of the getter fixedly installed in the cavity of the laser gyroscope are avoided, the adverse effect of the getter installation on dust in the cavity is eliminated, and the reliability of the gyroscope is favorably improved; the gas discharge pipe is prevented from participating in gas discharge, the adverse effect that tiny particles in the gas discharge pipe enter the cavity through discharge electrophoresis is eliminated, and the reliability of the gyroscope is improved; by arranging the two getter, the exhaust pipe and the anode integrated mechanism, the complete symmetry of the two anode structures of the laser gyroscope is realized, the anode discharge symmetry is improved, and the gyroscope precision is favorably improved; the integration of the getter, the exhaust pipe and the anode is beneficial to the miniaturization of the laser gyroscope.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings showing the embodiments will be described below.
FIG. 1 is a schematic view of an integrated getter, exhaust and anode mechanism;
FIG. 2 is a schematic view of a vent terminal;
FIG. 3 is a schematic diagram of a laser gyroscope according to a first embodiment;
FIG. 4 is a schematic structural diagram of a laser gyroscope according to a second embodiment;
FIG. 5 is a schematic structural diagram of a laser gyroscope according to a third embodiment;
in the figure, 1-getter, exhaust pipe and anode integrated laser gyro cavity, 2-getter, exhaust pipe and anode integrated mechanism installation cavity, 3-getter, exhaust pipe and anode integrated mechanism, 4-exhaust terminal, 5-nickel band, 6-nickel band, 7-getter, 8-exhaust pipe, 9-exhaust terminal end face, 10-exhaust hole and 11-anode.
Detailed Description
This section is an example of the present invention and is provided to explain and illustrate the technical solutions of the present invention.
Referring to fig. 1, the present invention is illustrated in an integrated structure of a getter, an exhaust pipe and an anode. The getter, exhaust pipe and anode integrated mechanism comprises an exhaust terminal 4, a nickel strap 5, a nickel strap 6 and a getter 7. Exhaust terminal 4 referring to fig. 2, the exhaust terminal 4 includes an exhaust pipe 8, an exhaust terminal end surface 9, an exhaust hole 10, and an anode 11. One end of the nickel strap 5 is spot-welded with the getter 7, one end of the nickel strap 6 is spot-welded with the getter 7, and the welding points of the nickel strap 5, the nickel strap 6 and the getter are on the same diameter of the getter 7. The central hole of the getter 7 penetrates through the anode 11, and the other ends of the nickel strap 5 and the nickel strap 6 are welded with the exhaust terminal end face 9 through laser welding or spot welding to form the getter, exhaust pipe and anode integrated mechanism 3.
Example one
As shown in fig. 3, the laser gyro comprises two integrated mechanisms of the getter, the exhaust pipe and the anode. The getter, the exhaust pipe and the anode integrated mechanism are arranged in two special chambers 2 on the side face of a cavity 1 of the laser gyroscope, the chambers 2 are stepped holes, the bottoms of the chambers 2 are communicated with cavity capillary holes through fine holes, and the side walls and the bottoms of the chambers need to be polished so as to facilitate the activation of external laser beams on the getter. And the end face 9 of the exhaust terminal of the getter, exhaust pipe and anode integrated mechanism 3 is hermetically connected with the cavity 1 through an indium seal, so that the mounting of the getter, exhaust pipe and anode integrated mechanism 3 is completed. The same method completes the installation of another getter, exhaust pipe and anode integration mechanism 3.
The laser gyroscope provided with the getter, the exhaust pipe and the anode integrated mechanism can realize the acquisition of an ultrahigh vacuum environment in the cavity of the laser gyroscope and the injection of a gain medium by communicating with external vacuum equipment, and when the cavity is in the ultrahigh vacuum environment, the getter 7 is irradiated by external laser beams, so that the heating, degassing and activation of the getter can be realized.
Example two
Referring to fig. 4, a laser gyro includes: the getter, the exhaust pipe and the anode are integrated, and the anode is made of the same material as the getter, the exhaust pipe and the anode and has a ball head shape. The getter, the exhaust pipe and the anode integrated mechanism are arranged in 2 special chambers 2 on the side face of a cavity 1 of the laser gyroscope, the chambers 2 are stepped holes, the bottoms of the chambers 2 are communicated with cavity capillary holes through fine holes, and the side walls and the bottoms of the chambers need to be polished so as to facilitate the activation of external laser beams on the getter.
The end face 9 of the exhaust terminal of the getter, exhaust pipe and anode integrated mechanism 3 is hermetically connected with the cavity 1 through an indium seal, and the installation of the getter, exhaust pipe and anode integrated mechanism 3 is completed. The anode on the other side is indium sealed to the other chamber 2.
The laser gyroscope provided with the getter, the exhaust pipe and the anode integrated mechanism can realize the acquisition of an ultrahigh vacuum environment in the cavity of the laser gyroscope and the injection of a gain medium by communicating with external vacuum equipment, and when the cavity is in the ultrahigh vacuum environment, the getter 7 is irradiated by external laser beams, so that the heating, degassing and activation of the getter can be realized.
EXAMPLE III
Referring to fig. 5, a laser gyro includes an integrated mechanism of the getter, the exhaust pipe and the anode and two cathodes. The getter, the exhaust pipe and the anode integrated mechanism are arranged in 2 special chambers 2 on the side face of a cavity 1 of the laser gyroscope, the chambers 2 are stepped holes, the bottoms of the chambers 2 are communicated with cavity capillary holes through fine holes, and the side walls and the bottoms of the chambers need to be polished so as to facilitate the activation of external laser beams on the getter.
The end face 9 of the exhaust terminal of the getter, exhaust pipe and anode integrated mechanism 3 is hermetically connected with the cavity 1 through an indium seal, and the installation of the getter, exhaust pipe and anode integrated mechanism 3 is completed.
The laser gyroscope provided with the getter, the exhaust pipe and the anode integrated mechanism can realize the acquisition of an ultrahigh vacuum environment in the cavity of the laser gyroscope and the injection of a gain medium by communicating with external vacuum equipment, and when the cavity is in the ultrahigh vacuum environment, the getter 7 is irradiated by external laser beams, so that the heating, degassing and activation of the getter can be realized.
Claims (9)
1. A getter, exhaust pipe and anode integrated structure is characterized in that: the structure includes: the device comprises an exhaust terminal, two nickel belts and a getter;
the exhaust terminal is cylindrical, and one end of the exhaust terminal is a hemispherical anode; the other end is provided with a blind hole as an exhaust pipe;
an annular table is arranged on one side of the exhaust terminal close to the anode;
the bottom of the blind hole extends to a position between the annular table and the anode, and the exhaust terminal is provided with vent holes along the radial direction to communicate the bottom of the blind hole with the outer surface of the exhaust terminal;
the getter is annular, is sleeved on one side of the anode of the exhaust terminal and is welded and fixed on the lower end face of the annular table through two nickel strips.
2. The integrated getter, exhaust pipe and anode structure according to claim 1, wherein: the lower surface of the getter does not exceed the bottom plane of the hemispherical anode.
3. The integrated getter, exhaust pipe and anode structure according to claim 2, wherein: the ring getter is concentrically assembled with and without contact with the anode.
4. The integrated getter, exhaust pipe and anode structure according to claim 2, wherein: the roughness of the lower end face of the annular table is not more than 1.6 microns, a nickel band is welded on the inner ring of the lower end face, and the outer ring and the laser gyro cavity are sealed in indium.
5. The integrated getter, exhaust pipe and anode structure according to claim 2, wherein: the exhaust terminal is made of TU1 or TU2 oxygen-free copper or 4J36 invar alloy, and the exhaust pipe is used for cold welding and clamping sealing.
6. The integrated getter, exhaust pipe and anode structure according to claim 2, wherein: the getter is activated by laser irradiation after the structure is mounted on a laser gyro.
7. A laser gyro is characterized in that: the laser gyro includes: a laser gyroscope cavity, a cathode, two getter, exhaust pipe and anode integrated structures as described in any one of claims 1-5;
one end of the laser gyroscope cavity is connected with the cathode, and two stepped holes are symmetrically formed in the laser gyroscope cavity and used as a cavity to be connected with the getter, the exhaust pipe and the anode integrated structure.
8. A laser gyro is characterized in that: the laser gyro includes: a laser gyroscope cavity, a cathode, a getter, exhaust pipe and anode integrated structure as claimed in any one of claims 1 to 5 and a universal anode;
the laser gyroscope cavity is connected with the cathode and the universal anode, a step hole is further formed in the laser gyroscope cavity and used as a cavity to be connected with the getter, the exhaust pipe and the anode integrated structure, and the getter, the exhaust pipe and the anode integrated structure are symmetrical about the universal anode.
9. A laser gyro is characterized in that: the laser gyro includes: a laser gyroscope cavity, two cathodes, a getter according to any of claims 1 to 5, an exhaust pipe and an anode integrated structure;
one end of the cavity of the laser gyroscope is connected with the getter, the exhaust pipe and the anode integrated structure;
the cavity of the laser gyroscope is also symmetrically connected with the two cathodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211417510.XA CN115752419A (en) | 2022-11-11 | 2022-11-11 | Getter, exhaust pipe and anode integrated structure and laser gyroscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211417510.XA CN115752419A (en) | 2022-11-11 | 2022-11-11 | Getter, exhaust pipe and anode integrated structure and laser gyroscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115752419A true CN115752419A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211417510.XA Pending CN115752419A (en) | 2022-11-11 | 2022-11-11 | Getter, exhaust pipe and anode integrated structure and laser gyroscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115752419A (en) |
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2022
- 2022-11-11 CN CN202211417510.XA patent/CN115752419A/en active Pending
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