CN103033179B - Fiber-optic gyroscope sensitive ring skeleton with inner flange - Google Patents
Fiber-optic gyroscope sensitive ring skeleton with inner flange Download PDFInfo
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- CN103033179B CN103033179B CN201210568743.XA CN201210568743A CN103033179B CN 103033179 B CN103033179 B CN 103033179B CN 201210568743 A CN201210568743 A CN 201210568743A CN 103033179 B CN103033179 B CN 103033179B
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- 239000013307 optical fiber Substances 0.000 claims abstract description 41
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 238000004804 winding Methods 0.000 claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 13
- 238000004806 packaging method and process Methods 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 230000003746 surface roughness Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
一种具有内法兰的光纤陀螺敏感环骨架，它是一种横截面为“T”字型的圆环体状结构，包括用于绕制光纤线圈的圆柱面，自圆柱面向内延伸用于提供安装基准的内法兰，位于内法兰上、下表面、用于定位和固定敏感环组件外壳的上、下挡圈。该圆柱面为环形结构，其表面的粗糙度按预定要求处理；该内法兰位于圆柱面的二分之一高度处并向内水平延伸，在其上加工有用于固定环骨架的安装结构；该上、下挡圈与圆柱面保持同心，并且在上挡圈加工有可让光纤线圈尾纤通过的过纤槽口。利用本发明组装成光纤陀螺敏感环组件后，降低了外部温度波动对光纤线圈的影响，提高了敏感环的温度适应性，实现了对敏感环的独立封装和对光纤线圈的完全磁屏蔽防护。
A fiber optic gyro sensitive ring skeleton with an inner flange, which is a torus-shaped structure with a "T" cross-section, including a cylindrical surface for winding an optical fiber coil, extending inward from the cylindrical surface for Provide the inner flange of the installation reference, located on the upper and lower surfaces of the inner flange, and the upper and lower retaining rings for positioning and fixing the shell of the sensitive ring assembly. The cylindrical surface is a ring structure, and its surface roughness is processed according to predetermined requirements; the inner flange is located at half the height of the cylindrical surface and extends horizontally inward, and a mounting structure for fixing the ring skeleton is processed on it; The upper and lower retaining rings are kept concentric with the cylindrical surface, and the upper retaining ring is processed with a fiber passing slot through which the pigtail of the optical fiber coil can pass. After the optical fiber gyro sensitive ring assembly is assembled by the invention, the influence of external temperature fluctuation on the optical fiber coil is reduced, the temperature adaptability of the sensitive ring is improved, and independent packaging of the sensitive ring and complete magnetic shielding protection of the optical fiber coil are realized.
Description
技术领域technical field
本发明涉及一种具有内法兰的光纤陀螺敏感环骨架，用于绕制光纤线圈，可以有效减少外部直接热传导的通道、并可以实现对光纤线圈的独立封装和磁屏蔽防护。属于惯性导航技术领域。The invention relates to an optical fiber gyroscope sensitive ring skeleton with an inner flange, which is used for winding optical fiber coils, can effectively reduce external direct heat conduction channels, and can realize independent packaging and magnetic shielding protection for the optical fiber coils. The invention belongs to the technical field of inertial navigation.
背景技术Background technique
光纤陀螺基于萨格奈克效应，用于检测角位移和角速度信号，由光纤绕制的敏感环线圈是其关键敏感元件，作为绕制光纤线圈的载体，光纤陀螺敏感环骨架的结构设计应充分考虑对整个敏感环组件的传热特性优化和磁屏蔽防护，以满足高精度陀螺对温度、电磁环境影响的严格要求。Based on the Sagnac effect, the fiber optic gyro is used to detect angular displacement and angular velocity signals. The sensitive ring coil wound by optical fiber is its key sensitive element. As the carrier of the fiber optic coil, the structural design of the fiber optic gyro sensitive ring skeleton should be fully Consider the optimization of heat transfer characteristics and magnetic shielding protection of the entire sensitive ring assembly to meet the strict requirements of high-precision gyroscopes on the influence of temperature and electromagnetic environment.
发明内容Contents of the invention
1、目的：本发明的目的是提供一种具有内法兰的光纤陀螺敏感环骨架，用于绕制光纤线圈，在装配成光纤陀螺敏感环模块时具有最小的直接热传导通道，并可以实现对光纤线圈的独立封装和磁屏蔽防护。1. Purpose: The purpose of this invention is to provide a fiber optic gyroscope sensitive ring skeleton with an inner flange, which is used for winding fiber optic coils. When assembled into a fiber optic gyroscope sensitive ring module, it has the smallest direct heat conduction channel and can realize the Independent packaging and magnetic shielding protection of the fiber optic coil.
2、技术方案：本发明一种具有内法兰的光纤陀螺敏感环骨架，是一种横截面为“T”字型的圆环体状结构，包括了用于绕制光纤线圈的圆柱面，自圆柱面向内延伸的、用于提供安装基准的内法兰，以及位于内法兰上、下表面、用于定位和固定敏感环组件外壳的上、下挡圈。2. Technical solution: The present invention has a fiber optic gyroscope sensitive ring skeleton with an inner flange, which is a circular ring structure with a "T" cross section, including a cylindrical surface for winding an optical fiber coil, An inner flange extending inward from the cylindrical surface to provide an installation datum, and upper and lower retaining rings located on the upper and lower surfaces of the inner flange for positioning and fixing the shell of the sensitive ring assembly.
所述的圆柱面为圆环形结构，其外圆周面粗糙度按照预定要求进行处理，以提高光纤线圈绕制时的附着力；The cylindrical surface is a ring-shaped structure, and the roughness of its outer peripheral surface is processed according to predetermined requirements to improve the adhesion of the optical fiber coil during winding;
所述的内法兰位于圆柱面的二分之一高度处并向内水平延伸，成扁平的圆环状，其厚度在满足刚度的前提下尽可能的薄；进一步地，在内法兰靠近圆心的内侧部位加工有用于固定本发明环骨架的安装结构，通常是安装孔及安装凸台等，并且成圆周均匀分布；The inner flange is located at half the height of the cylindrical surface and extends horizontally inwards, forming a flat ring shape, and its thickness is as thin as possible under the premise of satisfying the rigidity; further, the inner flange is close to The inner part of the center of the circle is processed with a mounting structure for fixing the ring skeleton of the present invention, usually a mounting hole and a mounting boss, etc., and is evenly distributed in a circle;
所述的上、下挡圈位于内法兰的上下表面，成环形凸起状，断面为矩形，靠近所述圆柱面的内侧并与之保持同心关系；在上挡圈加工有用于可让光纤线圈尾纤通过的过纤槽口。将本发明环骨架用于光纤陀螺敏感环组件的装配时，所述的圆柱面用于绕制和固定光纤线圈，所述的上、下挡圈用于定位和固定敏感环组件的外壳，所述的内法兰安装结构提供了敏感环组件安装的基准；上、下挡圈的尺寸经过设计，保证了组件外壳固定后与内部的光纤线圈及环骨架圆柱面之间具有间距基本一致的空气间隙而不直接接触，因而外部热量到光纤线圈的直接热传导通道仅为厚度有限的内法兰，有效降低了外部温度波动的影响；上、下挡圈与敏感环组件外壳之间通过焊接或者粘接方式固定成型，光纤线圈的尾纤可沿本发明环骨架圆柱面的内侧盘绕至内法兰上表面，并通过所述的过纤槽口引出，因而实现了对敏感环的独立封装；当本发明环骨架和组件外壳都采用磁屏蔽材料加工时，可以进一步实现对光纤线圈的完全磁屏蔽防护。The upper and lower retaining rings are located on the upper and lower surfaces of the inner flange, forming a ring-shaped protrusion with a rectangular cross-section, close to the inner side of the cylindrical surface and maintaining a concentric relationship with it; the processing of the upper retaining ring is useful for allowing optical fibers to The fiber slot through which the pigtail of the coil passes. When the ring skeleton of the present invention is used for the assembly of the fiber optic gyroscope sensitive ring assembly, the cylindrical surface is used for winding and fixing the optical fiber coil, and the upper and lower retaining rings are used for positioning and fixing the shell of the sensitive ring assembly. The installation structure of the inner flange described above provides the basis for the installation of the sensitive ring components; the dimensions of the upper and lower retaining rings are designed to ensure that after the component housing is fixed, there is an air gap with the same distance between the internal optical fiber coil and the cylindrical surface of the ring skeleton. Therefore, the direct heat conduction channel from the external heat to the optical fiber coil is only the inner flange with limited thickness, which effectively reduces the influence of external temperature fluctuations; the upper and lower retaining rings and the sensitive ring assembly shell are welded or glued The pigtail of the optical fiber coil can be coiled to the upper surface of the inner flange along the inner side of the cylindrical surface of the ring skeleton of the present invention, and drawn out through the fiber passing notch, thus realizing independent packaging of the sensitive ring; When both the ring skeleton and the component shell of the present invention are processed with magnetic shielding materials, complete magnetic shielding protection for the optical fiber coil can be further realized.
3、优点及功效：本发明所述具有内法兰的环骨架，具有结构简单、易于加工、便于装配、热传导通径小的优点，将其应用于光纤陀螺敏感环组件的装配时，可实现对内部光纤线圈的独立封装和完全磁屏蔽，同时最大程度减少了外部温度变化对内部线圈温度场的影响。3. Advantages and effects: The ring skeleton with inner flange of the present invention has the advantages of simple structure, easy processing, convenient assembly, and small heat conduction path. When it is applied to the assembly of the optical fiber gyro sensitive ring assembly, it can realize Independent encapsulation and complete magnetic shielding of the internal fiber optic coil, while minimizing the impact of external temperature changes on the temperature field of the internal coil.
附图说明Description of drawings
图1a是本发明的轴测俯视图。Figure 1a is a top axonometric view of the present invention.
图1b是本发明的轴测仰视图。Figure 1b is an axonometric bottom view of the present invention.
图2a是本发明之内法兰安装结构的法兰爪形式。Fig. 2a is the flange claw form of the inner flange installation structure of the present invention.
图2b是本发明之内法兰安装结构的内圆柱面形式。Fig. 2b is the form of the inner cylindrical surface of the inner flange installation structure of the present invention.
图中符号说明如下：The symbols in the figure are explained as follows:
1.圆柱面 11.圆柱外圆周面 12.圆柱内圆周面1. Cylindrical surface 11. Cylindrical outer peripheral surface 12. Cylindrical inner peripheral surface
2.内法兰 21.安装凸台 22.安装孔2. Inner flange 21. Mounting boss 22. Mounting hole
3.上挡圈 31.过纤槽口 4.下挡圈3. Upper retaining ring 31. Fiber notch 4. Lower retaining ring
具体实施方式detailed description
下面将结合附图对本发明作进一步的详细说明。The present invention will be further described in detail below in conjunction with the accompanying drawings.
图1a、b是本发明的具有内法兰的光纤陀螺敏感环骨架的轴测视图。Figures 1a and b are axonometric views of the skeleton of the fiber optic gyroscope sensitive ring with an inner flange according to the present invention.
图2a、b是本发明的内法兰安装结构的可能形式的示意图。Fig. 2a, b are schematic diagrams of possible forms of the inner flange mounting structure of the present invention.
本发明一种具有内法兰的光纤陀螺敏感环骨架，用于绕制光纤线圈，在装配成光纤陀螺敏感环模块结构时具有最小的直接热传导通道，同时可以实现对光纤线圈的独立封装和磁屏蔽防护。The present invention is an optical fiber gyroscope sensitive ring skeleton with an inner flange, which is used for winding optical fiber coils. When assembled into a fiber optic gyroscope sensitive ring module structure, it has the smallest direct heat conduction channel, and at the same time can realize the independent packaging and magnetization of the optical fiber coil shield protection.
本发明一种具有内法兰的光纤陀螺敏感环骨架，如图1a、b、图2a、b所示，其横截面为“T”字型的圆环体状结构，包括了用于绕制光纤线圈的圆柱面（1），自圆柱面（1）向内水平延伸的内法兰（2），以及位于内法兰（2）上表面的上挡圈（3）和位于内法兰（2）下表面的下挡圈（4）。A fiber optic gyroscope sensitive ring skeleton with an inner flange of the present invention, as shown in Figure 1a, b, Figure 2a, b, its cross section is a "T"-shaped ring-shaped structure, including a The cylindrical surface (1) of the optical fiber coil, the inner flange (2) extending horizontally inward from the cylindrical surface (1), and the upper retaining ring (3) located on the upper surface of the inner flange (2) and the inner flange ( 2) The lower retaining ring (4) on the lower surface.
所述的圆柱面（1）为圆环状结构，其圆柱外圆周面（11）用于绕制光纤线圈，表面粗糙度按照绕环工艺要求进行处理，以提高光纤线圈绕制时的附着力，其圆柱内圆周面（12）用于盘绕光纤线圈尾纤；所述的内法兰（2）位于所述圆柱面（1）的二分之一高度处并向内水平延伸，成扁平的圆环状结构，其厚度在满足刚度要求的前提下尽可能的薄；在内法兰（2）的上表面外侧加工有成“C”型环状凸起的上挡圈（3），其“C”型环状凸起的缺口处构成了用于光纤线圈尾纤通过的过纤槽口（31），在内法兰（2）的下表面外侧加工有成圆环状凸起的下挡圈（4），它和所述的上挡圈（3）具有相同的基本尺寸并保持同心关系；进一步地，在内法兰（2）靠近圆心的内侧部位加工有用于固定本发明环骨架的安装结构，可以是安装凸台（21）和安装孔（22），并且所述的安装结构通常成圆周均匀布置。所述的圆柱面（1）和内法兰（2）上的安装凸台（21）保持垂直关系，和所述的上挡圈（3）、下挡圈（4）保持同心关系。The cylindrical surface (1) is a ring-shaped structure, and its outer peripheral surface (11) is used for winding optical fiber coils, and the surface roughness is processed according to the requirements of the winding process to improve the adhesion of optical fiber coils during winding , the cylindrical inner peripheral surface (12) is used to coil the pigtail of the optical fiber coil; the inner flange (2) is located at half the height of the cylindrical surface (1) and extends horizontally inward, forming a flat Ring-shaped structure, its thickness is as thin as possible under the premise of meeting the rigidity requirements; the upper surface of the inner flange (2) is processed with a "C"-shaped annular convex upper retaining ring (3), its The notch of the "C"-shaped ring-shaped protrusion constitutes the fiber-passing notch (31) for the passage of the optical fiber coil pigtail, and the lower surface of the inner flange (2) is processed with a ring-shaped raised bottom The retaining ring (4), which has the same basic size as the upper retaining ring (3) and maintains a concentric relationship; further, the inner part of the inner flange (2) near the center of the circle is processed to fix the ring skeleton of the present invention The mounting structures may be mounting bosses (21) and mounting holes (22), and the mounting structures are usually evenly arranged in a circle. The cylindrical surface (1) maintains a vertical relationship with the mounting boss (21) on the inner flange (2), and maintains a concentric relationship with the upper retaining ring (3) and the lower retaining ring (4).
将本发明带内法兰的环骨架用于敏感环组件的装配时，所述的圆柱面（1）用于光纤线圈的绕制和固定，所述的上、下挡圈（3）、（4）用于定位和固定敏感环组件的外壳，断面为矩形。所述的内法兰安装结构提供了敏感环组件的安装和定位基准，包括并不仅限于所述的安装凸台（21）和安装孔（22），如图2a、b所示，也可以是法兰爪结构或者与内法兰垂直的内圆柱面结构。When the ring skeleton with an inner flange of the present invention is used for the assembly of the sensitive ring assembly, the cylindrical surface (1) is used for winding and fixing the optical fiber coil, and the upper and lower retaining rings (3), ( 4) The housing used for positioning and fixing the sensitive ring assembly has a rectangular section. The installation structure of the inner flange provides the installation and positioning reference of the sensitive ring assembly, including but not limited to the installation boss (21) and installation hole (22), as shown in Figure 2a, b, it can also be Flange claw structure or inner cylindrical surface structure perpendicular to the inner flange.
将本发明带内法兰的环骨架用于螺敏感环组件的装配时，所述上、下挡圈（3）、（4）和组件外壳之间通过焊接或者粘接方式固定，上、下挡圈（3）、（4）的尺寸经过设计，可以保证装配后组件外壳与其所包覆的光纤线圈和环骨架圆柱内圆周面之间具有间距基本一致的空气气隙而不直接接触，因而外部热量到光纤线圈的直接热传导通道仅为厚度有限的内法兰，有效降低了外部温度波动对内部线圈的影响。并且，由于所述的内法兰（2）位于环骨架圆柱面（1）的二分之一高度处，组件装配后的温度场分布具有良好的对称性，进一步减缓了外界温度变化对内部光纤线圈的影响。When the ring skeleton with an inner flange of the present invention is used for the assembly of the screw sensitive ring assembly, the upper and lower retaining rings (3), (4) and the assembly shell are fixed by welding or bonding. The dimensions of the retaining rings (3) and (4) are designed to ensure that after assembly, there is an air gap with basically the same distance between the outer shell of the assembly and the coated optical fiber coil and the inner peripheral surface of the ring skeleton cylinder without direct contact. The direct heat conduction channel from the external heat to the fiber optic coil is only the inner flange with limited thickness, which effectively reduces the influence of external temperature fluctuations on the internal coil. Moreover, since the inner flange (2) is located at half the height of the cylindrical surface of the ring skeleton (1), the temperature field distribution after assembly of the components has good symmetry, which further slows down the impact of external temperature changes on the internal optical fiber. coil effect.
将本发明带内法兰的环骨架用于螺敏感环组件的装配时，光纤线圈的尾纤可以沿着所述圆柱内圆周面（12）盘绕到内法兰（2）上，并通过上挡圈（3）上的过纤槽口（31）引出，因而实现了对敏感环的独立封装。当本发明环骨架和组件外壳都采用磁屏蔽材料加工时，可以进一步实现对光纤线圈的完全磁屏蔽防护。When the ring skeleton with an inner flange of the present invention is used for the assembly of the screw sensitive ring assembly, the pigtail of the optical fiber coil can be coiled onto the inner flange (2) along the inner peripheral surface (12) of the cylinder, and passed through the upper The fiber notch (31) on the retaining ring (3) leads out, thereby realizing the independent packaging of the sensitive ring. When both the ring skeleton and the component shell of the present invention are processed with magnetic shielding materials, complete magnetic shielding protection for the optical fiber coil can be further realized.
本发明具有内法兰的光纤陀螺敏感环骨架具有如下结构特点：The fiber optic gyroscope sensitive ring skeleton with the inner flange of the present invention has the following structural features:
（1）所述的环骨架为横截面成“T”字型的圆环体结构，包括了用于绕制光纤线圈的环状圆柱面，以及从圆柱面二分之一高度处向内水平延伸的内法兰，因而结构简单，易于加工。(1) The ring skeleton is a torus structure with a "T" shape in cross section, including an annular cylindrical surface for winding an optical fiber coil, and a horizontal Extended inner flange, so the structure is simple and easy to process.
（2）所述的环骨架内法兰上具有用于定位和固定组件外壳的上下挡圈结构，其尺寸经过设计，可保证组件外壳固定后与其所包覆的线圈及环骨架圆柱内圆周面之间具有间距基本一致的空气间隙而不直接接触，因而最大程度减少了外部温度波动的影响。(2) The ring frame inner flange has an upper and lower retaining ring structure for positioning and fixing the component shell, and its size is designed to ensure that the component shell is fixed and the coil covered by it and the inner peripheral surface of the ring frame cylinder There is an air gap with substantially uniform spacing between them without direct contact, thus minimizing the influence of external temperature fluctuations.
（3）光纤线圈的尾纤可沿所述圆柱内圆周面盘绕至内法兰上，并通过所述的过纤槽口引出，因而可实现对敏感环组件的独立封装。(3) The pigtail of the optical fiber coil can be coiled to the inner flange along the inner peripheral surface of the cylinder, and drawn out through the fiber-passing notch, so that the independent packaging of the sensitive ring component can be realized.
将本发明所述具有内法兰的敏感环骨架应用于光纤陀螺敏感环组件的装配时具有以下优势：When the sensitive ring skeleton with inner flange described in the present invention is applied to the assembly of the fiber optic gyroscope sensitive ring assembly, it has the following advantages:
（1）具有最小的直接热传导通道，光纤线圈受外部温度变化的影响小。(1) With the smallest direct heat conduction channel, the fiber optic coil is less affected by external temperature changes.
（2）易于实现敏感环模块的独立封装，有利于储存和装配。(2) It is easy to realize the independent packaging of the sensitive ring module, which is convenient for storage and assembly.
（3）可实现完全的磁屏蔽防护效能。(3) Complete magnetic shielding protection performance can be realized.
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|---|---|---|---|---|
| CN103994761B (en) * | 2014-05-15 | 2016-12-14 | 北京航空航天大学 | A kind of optical fibre gyro double-layer magnetic shielding sensing ring assembly with air-tight cavity and assemble method thereof |
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| CN109443340B (en) * | 2018-12-10 | 2022-09-06 | 河北汉光重工有限责任公司 | Device for butt joint of optical path system of fiber-optic gyroscope |
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| RU2283475C1 (en) * | 2005-05-11 | 2006-09-10 | Общество с ограниченной ответственностью "Научно-Производственная компания "Оптолинк" | Fiber-optic gyroscope |
| CN102620728A (en) * | 2012-03-22 | 2012-08-01 | 北京航空航天大学 | Double-layer magnetic shielding and bearing ring device suitable for high-precision fiber-optic gyroscope |
| CN102679972A (en) * | 2012-06-01 | 2012-09-19 | 北京航空航天大学 | Compound housing for fiber optic gyroscope |
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| JP2838123B2 (en) * | 1995-05-18 | 1998-12-16 | 日本航空電子工業株式会社 | Optical fiber gyro structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2283475C1 (en) * | 2005-05-11 | 2006-09-10 | Общество с ограниченной ответственностью "Научно-Производственная компания "Оптолинк" | Fiber-optic gyroscope |
| CN102620728A (en) * | 2012-03-22 | 2012-08-01 | 北京航空航天大学 | Double-layer magnetic shielding and bearing ring device suitable for high-precision fiber-optic gyroscope |
| CN102679972A (en) * | 2012-06-01 | 2012-09-19 | 北京航空航天大学 | Compound housing for fiber optic gyroscope |
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