CN108801951A - A kind of eyeglass sealing device for precisely regulating based on stable cavity absorption spectroscopy techniques - Google Patents
A kind of eyeglass sealing device for precisely regulating based on stable cavity absorption spectroscopy techniques Download PDFInfo
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Abstract
本发明提供一种基于稳定腔吸收光谱技术的镜片密封精密调节装置，涉及检测技术领域。包括套筒法兰，套筒法兰连接有调节套筒，调节套筒连接有镜片底座，镜片底座套接有高反射镜片，套筒法兰连接有弹性密封圈，弹性密封圈与高反射镜片压接，调节套筒连接有精密调节器。本发明解决了现有技术中高精度调节镜架活动部件较多、各部分连接易发生松动，影响调节精度的技术问题。本发明有益效果为：在保证腔体密封性和高反射镜片可在线三维精密调节的同时，减少了大量零部件，无活动部件，提高了集成度。结构简单合理、安装重复性好，节约维护成本。根据测量需要,使用压电陶瓷环，扩大了使用范围。
The invention provides a lens sealing precision adjustment device based on stable cavity absorption spectrum technology, and relates to the technical field of detection. Including the sleeve flange, the sleeve flange is connected with the adjustment sleeve, the adjustment sleeve is connected with the lens base, the lens base is sleeved with the high reflection lens, the sleeve flange is connected with the elastic sealing ring, the elastic sealing ring and the high reflection lens Crimp-fit, adjustment sleeves are attached with precision adjusters. The invention solves the technical problems in the prior art that there are many moving parts in the high-precision adjustment mirror frame, and the connection of each part is prone to loosening, which affects the adjustment accuracy. The beneficial effects of the invention are: while ensuring the tightness of the cavity and the online three-dimensional precision adjustment of the high-reflection mirror, a large number of parts are reduced, there are no moving parts, and the degree of integration is improved. The structure is simple and reasonable, the installation repeatability is good, and the maintenance cost is saved. According to the measurement needs, the piezoelectric ceramic ring is used to expand the scope of use.
Description
技术领域technical field
本发明涉及检测技术领域，尤其是涉及一种应用于腔衰荡或腔增强气体吸收光谱测量高反射镜片的密封及精密调节装置。The invention relates to the technical field of detection, in particular to a sealing and precision adjustment device for measuring high-reflection mirrors for cavity ring-down or cavity-enhanced gas absorption spectroscopy.
背景技术Background technique
基于稳定谐振腔的气体吸收光谱技术已经广泛应用于痕量气体浓度测量。稳定谐振腔的建立需要严苛的环境条件，不但要避免高反射镜片的污染，也要抗机械振动，通常在高洁净度的恒温恒湿实验室里进行搭建、调试和测量。如此高精细度稳定谐振腔的调节既需要专业的技术人员也离不开高精度调节镜架。在实际应用中通常需要在封闭的腔体内对谐振腔进行调节。在产品应用和后期维护中，无法在线调节，需要打开腔体，会引入环境干扰。中国专利申请公布号CN 104237129 A，申请公布日2014年12月24日，名称为“用于腔增强光谱仪器的密封调整镜架”的发明专利申请，公开了一种密封调整镜架。具有一固定在镜头固定座上的镜片、固定在镜头固定座下面的波纹管锁箍，镜片两侧各放置一个O 型垫圈，用于气密性；波纹管上端面与镜头固定座下端之间通过密封圈密封连接。镜头固定座上面装有可绕镜头固定座转动的调节环。调节环外装有可绕调节环转动的镜架调节架。该技术方案高精度调节镜架主要是通过旋转调节器实现镜片的x,y,z三方向的控制。活动部件较多、各部分连接易发生松动，影响调节精度。Gas absorption spectroscopy technology based on stable resonant cavity has been widely used in the measurement of trace gas concentration. The establishment of a stable resonant cavity requires harsh environmental conditions, not only to avoid contamination of highly reflective mirrors, but also to resist mechanical vibrations. It is usually built, debugged and measured in a high-clean constant temperature and humidity laboratory. The adjustment of such a high-precision and stable resonant cavity requires both professional technicians and high-precision adjustment mirror frames. In practical applications, it is usually necessary to adjust the resonant cavity in a closed cavity. In product application and post-maintenance, it cannot be adjusted online, and the cavity needs to be opened, which will introduce environmental interference. Chinese patent application publication number CN 104237129 A, the application publication date is December 24, 2014, and the invention patent application titled "A sealed and adjusted mirror frame for a cavity-enhanced spectroscopy instrument" discloses a sealed and adjusted mirror frame. It has a lens fixed on the lens holder, a bellows lock hoop fixed under the lens holder, and an O-shaped gasket is placed on each side of the lens for airtightness; between the upper end of the bellows and the lower end of the lens holder The connection is sealed by a sealing ring. An adjustment ring that can rotate around the lens holder is arranged on the lens holder. A mirror frame adjusting frame that can rotate around the adjusting ring is installed outside the adjusting ring. In the technical solution, the high-precision adjustment of the mirror frame mainly realizes the control of the x, y, and z directions of the lens through a rotating regulator. There are many moving parts, and the connection of each part is prone to loosening, which affects the adjustment accuracy.
发明内容Contents of the invention
为了解决现有技术中高精度调节镜架活动部件较多、各部分连接易发生松动，影响调节精度的技术问题，本发明提供一种基于稳定腔吸收光谱技术的镜片密封精密调节装置，达到腔体密封性好、镜片在线三维精密调节方便、装置集成度高的目的。In order to solve the technical problems in the prior art that there are many moving parts in the high-precision adjustment frame, and the connections of each part are prone to loosening, which affects the adjustment accuracy, the present invention provides a lens sealing precision adjustment device based on the stable cavity absorption spectrum technology, which can reach the cavity Good sealing, convenient online three-dimensional precision adjustment of the lens, and high device integration.
本发明的技术方案是：一种基于稳定腔吸收光谱技术的镜片密封精密调节装置，包括：套筒法兰，套筒法兰连接有调节套筒，调节套筒连接有镜片底座，镜片底座套接有高反射镜片，套筒法兰连接有弹性密封圈，弹性密封圈与高反射镜片压接，调节套筒连接有精密调节器。在保证腔体密封性和高反射镜片可在线三维精密调节的同时，减少了大量零部件，无活动部件，提高了集成度。The technical solution of the present invention is: a lens sealing precision adjustment device based on stable cavity absorption spectrum technology, including: sleeve flange, the sleeve flange is connected with the adjustment sleeve, the adjustment sleeve is connected with the lens base, the lens base cover A high-reflection lens is connected, the sleeve flange is connected with an elastic sealing ring, the elastic sealing ring is crimped with the high-reflection lens, and the adjusting sleeve is connected with a precision regulator. While ensuring the sealing of the cavity and the online three-dimensional precision adjustment of the high-reflection lens, a large number of parts are reduced, there are no moving parts, and the integration degree is improved.
作为优选，调节套筒呈桶状，内腔呈圆台状，开口端为圆台的大直径；利于安装定位和防止错位，确保安装重复稳定、方便简单，圆台的小直径处于调节套筒底部，与镜片底座接触，为镜片提供初始压力，保证有效密封。Preferably, the adjusting sleeve is in the shape of a barrel, the inner cavity is in the shape of a circular platform, and the open end is the large diameter of the circular platform; it facilitates installation and positioning and prevents misalignment, ensuring repeated, stable, convenient and simple installation. The small diameter of the circular platform is at the bottom of the adjusting sleeve, and The lens base contacts to provide initial pressure on the lens to ensure an effective seal.
作为优选，调节套筒设有安装孔，调节套筒外壁水平面和垂直面的连接部为斜面，安装孔中轴线与斜面的垂线平行，精密调节器与安装孔插接；斜面结构既缩小了尺寸又扩大了操作空间，利于系统集成和镜片调节。As a preference, the adjusting sleeve is provided with a mounting hole, the connection between the horizontal surface and the vertical surface of the outer wall of the adjusting sleeve is an inclined plane, the central axis of the mounting hole is parallel to the vertical line of the inclined plane, and the precision regulator is plugged into the mounting hole; The size also expands the operating space, which is beneficial to system integration and lens adjustment.
作为优选，精密调节器包括旋转螺钉和顶珠，顶珠分别与旋转螺钉和镜片底座压接；操作简单，使用可靠。Preferably, the precision adjuster includes a rotating screw and a top ball, and the top ball is respectively pressed into the rotating screw and the lens base; the operation is simple and the use is reliable.
作为优选，镜片底座连接有压电陶瓷环，压电陶瓷环与高反射镜片压接；扩大使用范围。Preferably, the base of the lens is connected with a piezoelectric ceramic ring, and the piezoelectric ceramic ring is crimped with the high-reflection lens; the scope of use is expanded.
作为优选，套筒法兰连接有圆管法兰，圆管法兰密封连接有圆管；连接方便、可靠。Preferably, the sleeve flange is connected with a round pipe flange, and the round pipe flange is sealingly connected with a round pipe; the connection is convenient and reliable.
作为优选，圆管法兰连接有法兰密封圈，法兰密封圈与套筒法兰密封；保证密封。Preferably, the round pipe flange is connected with a flange sealing ring, and the flange sealing ring is sealed with the sleeve flange to ensure sealing.
作为优选，精密调节器有三个，以调节套筒上端面中心为圆心均布；无需转动就能实现对高反射镜片x,y,z三方向的调节。Preferably, there are three precision adjusters, which are evenly distributed with the center of the upper end surface of the adjustment sleeve as the center; the adjustment of the high reflection mirror in x, y, and z directions can be realized without rotation.
与现有技术相比，本发明的有益效果是：在保证腔体密封性和高反射镜片可在线三维精密调节的同时，减少了大量零部件，无活动部件，提高了集成度。结构简单合理、安装重复性好，节约维护成本。根据测量需要无需打开就，可使用压电陶瓷环，扩大了使用范围。Compared with the prior art, the invention has the beneficial effects of reducing a large number of parts and having no moving parts while ensuring the airtightness of the cavity and the online three-dimensional precision adjustment of the high-reflection mirror, and improving the degree of integration. The structure is simple and reasonable, the installation repeatability is good, and the maintenance cost is saved. According to measurement needs, piezoelectric ceramic rings can be used without opening, expanding the scope of use.
附图说明Description of drawings
附图1为本发明剖面图；Accompanying drawing 1 is a sectional view of the present invention;
附图2为图1的俯视图。Accompanying drawing 2 is the plan view of Fig. 1.
图中：1-套筒法兰；2-弹性密封圈；3-调节套筒；4-精密调节器；5-压电陶瓷环；6-高反射镜片；7-镜片底座；8-圆管法兰；9-圆管；41-旋转螺钉；42-顶珠；81-法兰密封圈。In the figure: 1-sleeve flange; 2-elastic sealing ring; 3-adjusting sleeve; 4-precision adjuster; 5-piezoelectric ceramic ring; 6-high reflection lens; 7-lens base; 8-round tube Flange; 9-round pipe; 41-rotating screw; 42-top bead; 81-flange sealing ring.
具体实施方式Detailed ways
下面通过实施例，并结合附图，对本发明的技术方案作进一步具体的说明。The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.
实施例1：Example 1:
如图1和2所示，一种基于稳定腔吸收光谱技术的镜片密封精密调节装置，包括：套筒法兰1。套筒法兰1呈圆盘状。套筒法兰1上表面设有调节套筒连接凹槽和弹性密封圈凹槽。调节套筒连接凹槽和弹性密封圈凹槽呈圆环状，圆环的圆心与套筒法兰1圆盘的圆心重合。调节套筒连接凹槽圆环的直径大于弹性密封圈凹槽圆环的直径。弹性密封圈凹槽中设有弹性密封圈2。弹性密封圈2高出套筒法兰1上表面。套筒法兰1下表面为平面。套筒法兰1中间设有套筒法兰孔。套筒法兰孔直径小于弹性密封圈凹槽圆环的直径。套筒法兰孔贯通套筒法兰1上下表面。套筒法兰1连接有调节套筒3。调节套筒3呈桶状，内腔呈圆台状，开口端为圆台的大直径。调节套筒3扣在套筒法兰1上表面，开口嵌入调节套筒连接凹槽。调节套筒3的上端为底面。调节套筒3的底面设有调节套筒孔。调节套筒孔呈圆台状，大开口在上端，小开口直径与套筒法兰孔直径相等。调节套筒3外壁水平面和垂直面的连接部为斜面。调节套筒3设有安装孔。安装孔中轴线与斜面的垂线平行。安装孔贯通斜面与调节套筒3内壁。安装孔固接有内螺纹套。调节套筒3连接有镜片底座7。镜片底座7位于调节套筒3内腔。镜片底座7呈桶状，开口朝下方，上端为底面。镜片底座7内腔为阶梯孔，大直径孔位于镜片底座7开口端。镜片底座7底面设有镜片底座孔。镜片底座孔直径与调节套筒孔直径相等。镜片底座7套接有高反射镜片6。高反射镜片6侧面与镜片底座7阶梯孔的大孔过渡配合。镜片底座7连接有压电陶瓷环5。压电陶瓷环5位于镜片底座7阶梯孔的小孔内，下表面露出镜片底座7阶梯孔的小孔进入镜片底座7阶梯孔的大孔。高反射镜片6上表面与压电陶瓷环5压接。高反射镜片6下表面与弹性密封圈2压接。调节套筒3连接有精密调节器4。精密调节器4有三个，以调节套筒3上端面中心为圆心均布。精密调节器4包括旋转螺钉41和顶珠42。旋转螺钉41与调节套筒3安装孔固接的内螺纹套连接。旋转螺钉41头部为锥形盲孔。锥形盲孔开口处的直径略小于顶珠42球径。顶珠42分别与旋转螺钉41和镜片底座7压接。顶珠42一端与锥形盲孔压接，另一端与镜片底座7外表面水平面与垂直面的连接部压接。套筒法兰1连接有圆管法兰8。圆管法兰8呈盘状，上表面为平面。圆管法兰8密封连接有圆管9。圆管法兰8中心设有圆管法兰孔。圆管9插入圆管法兰孔，本实施例采用的密封方法是将圆管9外侧壁与圆管法兰8下表面焊接。圆管法兰8上表面设有法兰密封圈凹槽。法兰密封圈凹槽为圆环状。法兰密封圈凹槽圆环的圆心与圆管法兰孔圆心重合。法兰密封圈凹槽圆环的内圆直径大于圆管法兰孔直径。圆管法兰8连接有法兰密封圈81。法兰密封圈81嵌入兰密封圈凹槽。圆管法兰8上表面与套筒法兰1下表面压紧连接时，套筒法兰1下表面压紧法兰密封圈81。As shown in FIGS. 1 and 2 , a lens sealing precision adjustment device based on stable cavity absorption spectroscopy technology includes: a sleeve flange 1 . The sleeve flange 1 is disc-shaped. The upper surface of the sleeve flange 1 is provided with an adjusting sleeve connection groove and an elastic sealing ring groove. The connecting groove of the adjustment sleeve and the groove of the elastic sealing ring are in the shape of a ring, and the center of the ring coincides with the center of the disc of the sleeve flange 1 . The diameter of the adjusting sleeve connection groove ring is greater than the diameter of the elastic sealing ring groove ring. An elastic sealing ring 2 is arranged in the groove of the elastic sealing ring. The elastic sealing ring 2 is higher than the upper surface of the sleeve flange 1 . The lower surface of the sleeve flange 1 is a plane. A sleeve flange hole is arranged in the middle of the sleeve flange 1 . The diameter of the sleeve flange hole is smaller than the diameter of the elastic sealing ring groove ring. The sleeve flange hole runs through the upper and lower surfaces of the sleeve flange 1 . The sleeve flange 1 is connected with an adjusting sleeve 3 . The adjustment sleeve 3 is barrel-shaped, the inner cavity is in the shape of a circular platform, and the open end is the large diameter of the circular platform. The adjusting sleeve 3 is buckled on the upper surface of the sleeve flange 1, and the opening is embedded in the connecting groove of the adjusting sleeve. The upper end of the adjustment sleeve 3 is the bottom surface. The bottom surface of the adjusting sleeve 3 is provided with an adjusting sleeve hole. The adjustment sleeve hole is in the shape of a circular platform, the large opening is at the upper end, and the diameter of the small opening is equal to the diameter of the flange hole of the sleeve. The connecting portion between the horizontal plane and the vertical plane of the outer wall of the adjustment sleeve 3 is an inclined plane. The adjusting sleeve 3 is provided with a mounting hole. The axis of the mounting hole is parallel to the vertical line of the inclined plane. The mounting hole runs through the inclined surface and the inner wall of the adjusting sleeve 3 . The mounting hole is fixedly connected with an internal thread sleeve. The adjusting sleeve 3 is connected with a lens base 7 . The lens base 7 is located in the cavity of the adjustment sleeve 3 . The lens base 7 is barrel-shaped, the opening faces downwards, and the upper end is the bottom surface. The inner cavity of the lens base 7 is a stepped hole, and the large-diameter hole is located at the opening end of the lens base 7 . The bottom surface of the lens base 7 is provided with a lens base hole. The diameter of the lens base hole is equal to the diameter of the adjusting sleeve hole. The lens base 7 is sleeved with a high reflective lens 6 . The side of the highly reflective lens 6 is in transition fit with the large hole of the lens base 7 stepped holes. The lens base 7 is connected with a piezoelectric ceramic ring 5 . The piezoelectric ceramic ring 5 is located in the small hole of the 7 stepped holes of the lens base, and the small hole exposed on the lower surface of the 7 stepped holes of the lens base enters the large hole of the 7 stepped holes of the lens base. The upper surface of the high reflection lens 6 is crimped with the piezoelectric ceramic ring 5 . The lower surface of the highly reflective lens 6 is crimped with the elastic sealing ring 2 . The adjusting sleeve 3 is connected with a precision adjuster 4 . There are three precision adjusters 4, which are evenly distributed with the center of the upper end face of the adjustment sleeve 3 as the center. The fine adjuster 4 includes a rotary screw 41 and a top ball 42 . Rotation screw 41 is connected with the internal thread sleeve affixed to the mounting hole of adjustment sleeve 3 . The head of the rotating screw 41 is a tapered blind hole. The diameter at the opening of the tapered blind hole is slightly smaller than the ball diameter of the top bead 42 . The top ball 42 is in pressure contact with the rotating screw 41 and the lens base 7 respectively. One end of the top bead 42 is crimped with the tapered blind hole, and the other end is crimped with the connecting portion between the horizontal surface and the vertical surface of the outer surface of the lens base 7 . The sleeve flange 1 is connected with a round pipe flange 8 . The round pipe flange 8 is disc-shaped, and the upper surface is plane. The round pipe flange 8 is sealingly connected with a round pipe 9 . Round pipe flange 8 center is provided with round pipe flange hole. The round pipe 9 is inserted into the flange hole of the round pipe. The sealing method adopted in this embodiment is to weld the outer side wall of the round pipe 9 to the lower surface of the round pipe flange 8 . The upper surface of the round pipe flange 8 is provided with a flange sealing ring groove. The groove of the flange sealing ring is circular. The center of the ring of the groove of the flange sealing ring coincides with the center of the circle of the flange hole of the circular pipe. The diameter of the inner circle of the groove ring of the flange seal ring is greater than the diameter of the flange hole of the round pipe. The round pipe flange 8 is connected with a flange sealing ring 81 . The flange sealing ring 81 is embedded in the groove of the flange sealing ring. When the upper surface of the round pipe flange 8 is pressed and connected with the lower surface of the sleeve flange 1, the lower surface of the sleeve flange 1 compresses the flange sealing ring 81.
安装时，圆管法兰8与圆管9密封连接。圆管法兰8的法兰密封圈凹槽嵌入法兰密封圈81。在套筒法兰1的弹性密封圈凹槽内嵌入弹性密封圈2。将镜片底座7嵌入调节套筒3，将镜片底座7底面外表面与调节套筒3底面内表面贴紧。在镜片底座7在安装压电陶瓷环5。装压电陶瓷环5引线穿过镜片底座7侧面和调节套筒3侧面，伸出调节套筒3外。压电陶瓷环5引线与调节套筒3侧面做密封处理。将高反射镜片6嵌入在镜片底座7中，使得高反射镜片6上表面与压电陶瓷环5贴紧。将镜片底座7开口端嵌入调节套筒连接凹槽，用螺钉固定镜片底座7与套筒法兰1。用螺钉将套筒法兰1与圆管法兰8固定。在调节套筒3的内螺纹套的孔中放入顶珠42，将旋转螺钉41与内螺纹套连接。安装完成后使用时，只要拧紧或放松旋转螺钉41，就能对高反射镜片6三维精密调。如要用到压电陶瓷环5，只要连接伸出调节套筒3外的压电陶瓷环5引线即可。在调节过程中，一直处于密封状态，不受外界影响。During installation, the round pipe flange 8 is tightly connected with the round pipe 9 . The flange sealing ring groove of the round pipe flange 8 is embedded in the flange sealing ring 81 . The elastic sealing ring 2 is embedded in the elastic sealing ring groove of the sleeve flange 1 . Embedding the lens base 7 into the adjustment sleeve 3, the outer surface of the bottom surface of the lens base 7 is closely attached to the inner surface of the bottom surface of the adjustment sleeve 3. The piezoelectric ceramic ring 5 is installed on the lens base 7 . The lead wires of the piezoelectric ceramic ring 5 pass through the side of the lens base 7 and the side of the adjusting sleeve 3, and extend out of the adjusting sleeve 3. The lead wire of the piezoelectric ceramic ring 5 is sealed with the side of the adjustment sleeve 3 . The high reflective lens 6 is embedded in the lens base 7 so that the upper surface of the high reflective lens 6 is in close contact with the piezoelectric ceramic ring 5 . Insert the opening end of the lens base 7 into the connecting groove of the adjustment sleeve, and fix the lens base 7 and the sleeve flange 1 with screws. Fix the sleeve flange 1 and the round pipe flange 8 with screws. Put the top ball 42 into the hole of the internal thread sleeve of the adjustment sleeve 3, and connect the rotating screw 41 with the internal thread sleeve. When used after the installation is completed, as long as the rotating screw 41 is tightened or loosened, the three-dimensional precision adjustment of the high reflection lens 6 can be performed. If the piezoelectric ceramic ring 5 is to be used, it is only necessary to connect the lead wires of the piezoelectric ceramic ring 5 protruding from the adjustment sleeve 3 . During the adjustment process, it is always in a sealed state and is not affected by the outside world.
Claims (8)
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