CN104198394B - One kind of plug-in disk structure photoacoustic spectroscopy detection filter means - Google Patents

One kind of plug-in disk structure photoacoustic spectroscopy detection filter means Download PDF

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CN104198394B
CN104198394B CN 201410455933 CN201410455933A CN104198394B CN 104198394 B CN104198394 B CN 104198394B CN 201410455933 CN201410455933 CN 201410455933 CN 201410455933 A CN201410455933 A CN 201410455933A CN 104198394 B CN104198394 B CN 104198394B
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CN 201410455933
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CN104198394A (en )
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张国强
李康
邱宗甲
林涛
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中国科学院电工研究所
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一种采用插拔式滤光片盘的光声光谱检测装置,其特征在于,光声光谱检测装置的滤光片盘为可替换式,即滤光片盘为插拔式滤光片盘结构。 One kind of apparatus using photoacoustic spectroscopy pluggable filter disc, wherein the filter disc detecting photoacoustic spectroscopy device is replaceable, i.e., the filter is a disc filter disc structure pluggable . 所述每个插拔式滤光片盘(5)包括滤光片安装盘、滤光片、转轴及固定滤光片安装盘的固定仓。 Each of the plug-in filter disc (5) comprises a fixed installation disk cartridge filter, filter, the filter mounting shaft and the fixed disk. 所述固定仓两侧开有卡槽,该卡槽与插拔式滤光片盘固定销相配合;所述的滤光片安装盘绕中心对称开有滤光片安装孔,安装有滤光片。 Fixed on both sides of the opened cartridge slot, the slot and filter pluggable mating pin fixing plate; the filter is mounted symmetrically opened coiled filter mounting hole, the filter is mounted . 滤光片安装盘由插拔式滤光片盘驱动器带动绕轴旋转。 Filter plug mounting plate driven by the drive disc filter is rotated about the axis. 所述的滤光片盘驱动器包括驱动电机和连接器;所述的光声光谱检测装置配有多个插拔式滤光片盘,针对不同的被检测气体安装不同的插拔式滤光片盘。 The filter disk drive includes a drive motor and a connector; photoacoustic spectroscopy of the detecting means with a plurality of plug-in plate filters, filter pluggable mounting different for different gases to be detected plate.

Description

一种插拔式滤光片盘结构的光声光谱检测装置 One kind of plug-in disk structure photoacoustic spectroscopy detection filter means

技术领域 FIELD

[0001] 本发明涉及一种气体检测装置,特别涉及一种能够滤光片盘可调换结构的光声光谱检测装置。 [0001] The present invention relates to a gas detection device, and particularly relates to an exchangeable filter disc photoacoustic spectroscopy detection device structure. 背景技术 Background technique

[0002] 气体检测技术在工业化生产及日常生活中有着极其广泛的应用,诸如油气管道的泄漏检测、电力系统中的变压器油中溶解气体检测、化工企业的排放废气检测以及空气中的痕量污染气体检测、人体疾病与医疗诊断方面的呼出气体检测等。 [0002] The gas detection has extremely broad application in daily life and industrial production, such as oil and gas pipeline leak detection, power system transformer oil dissolved gas detection, trace contamination detecting emissions from chemical companies and air gas detection, detection of human disease and exhaled gases such as medical diagnosis.

[0003] 如在电力行业中,积极应用在线监测技术,开展状态维修,加强设备的常规测试和综合分析,及时消除了一些设备隐患是发展的大趋势。 [0003] As in the power industry, the positive application of online monitoring technology, to carry out the state of repair and strengthening routine test equipment and comprehensive analysis, and remove some of the equipment hidden danger is the development trend. 电气设备故障,如电力变压器故障, SF6、氟碳混合气体等气体绝缘电气设备故障等一直是危害电网安全稳定运行的重要因素, 因此,对这些电气设备的运行状态进行检测尤为重要。 Electrical equipment failure, such as power transformer fault, SF6, mixed fluorocarbon gas and other gas insulated electrical equipment failure has been an important factor endanger the security and stability, and therefore, the operational status of these electrical equipment for testing is particularly important.

[0004] 对于充油式电力变压器,需要检测的特征气体有CH4,C2H4,H2,CO,C02,C2H2,C2H6 等。 [0004] For the oil-filled power transformer, wherein the gas to be detected are CH4, C2H4, H2, CO, C02, C2H2, C2H6 and the like. 目前对该类气体的检测方法较多;如专利200910046340.7提到一种采用光声光谱技术的在线监测电力变压器的系统,该光声光谱检测仪器采用可调谐级联二极管激光器作为光源。 Current detection method of this kind more gas; Patent 200910046340.7 mentioned line monitoring of power transformers using a system of photoacoustic spectroscopy, photoacoustic spectroscopy instrument uses cascaded tunable diode laser as the light source.

[0005] 对于以六氟化硫气体(SF6)为绝缘和灭弧介质的电气设备,如GIS(气体绝缘开关设备,Gas-1nsulated Switchgear)、断路器、变压器、开关柜等,目前检测的特征气体有S02F2、S0F2、SF4、SF2、H2S、S0F4等;专利CN2747583Y “六氟化硫电气设备故障检测仪的检测机构”通过一个四通接头连接压力传感器、S02电化学气体传感器和H2S电化学气体传感器, 检测S02和H2S的含量并对设备内部故障进行诊断。 [0005] For the electrical device to sulfur hexafluoride gas (SF6) is the arc extinguishing and insulating medium, such as a GIS (gas-insulated switchgear, Gas-1nsulated Switchgear), circuit breakers, transformers, switchgear, wherein the current detection gases S02F2, S0F2, SF4, SF2, H2S, S0F4 like; patent CN2747583Y "sulfur hexafluoride fault detector means detects electrical equipment" is connected via a four-way pressure transducer linker, S02 and H2S electrochemical gas sensor electrochemical gas sensor, internal fault detection apparatus and the content of S02 and H2S diagnosis. 但是该专利只能检测S02和H2S气体,检测多种气体组分时会受到传感器的限制。 However, this patent only detection of H2S and S02, is limited by the detection sensor when the plurality of gaseous components. 类似的还有专利CN101464671A “一种六氟化硫气体及其分解物监测监控的装置及方法”。 There are similar Patent CN101464671A "one kind of sulfur hexafluoride gas and a method and apparatus for monitoring the composition of decomposition." 专利CN101644670A “六氟化硫气体放电微量组分的红外检测装置及方法”利用傅立叶红外光谱的方法对GIS在局部放电下的SF6分解气体进行检测。 "Infrared detection device and method of sulfur hexafluoride gas discharge minors" Patent CN101644670A using FTIR method for GIS partial discharge in the SF6 decomposition gas detection. 还有,专利CN10151496A“基于光声光谱技术的SF6检测系统”,专利CN101982759A“局放下六氟化硫分解组分的红外光声光谱检测装置及方法”,专利CN102661918A“非共振光声光谱检测分析装置”,但都是针对SF6分解气体的某一或者某几个组分设计的装置,对于其他绝缘介质的检测无能为力。 "Infrared Photoacoustic spectroscopy apparatus and method for decomposing sulfur hexafluoride Bureau down components" Also, Patent CN10151496A "SF6 detection system based on photoacoustic spectroscopy", Patent CN101982759A, Patent CN102661918A "nonresonant photoacoustic spectroscopy analysis means ", but they are for the decomposition of SF6 gas in a certain component or apparatus designed for the detection of other dielectric powerless.

[0006] 此外,在电气设备中还有一类气体,即SF 6气体的替代气体,如专利〇吧00610160462.5提到采用呢、02、干燥空气、〇)2、0?4、(3-04?8丄2?6、03?8或0?31之中的任一种单体气体、或将这气体中的任意2种及以上的气体混合而成的混合气体,作为绝缘气体用于气体绝缘电气设备。一些人已经在进行应用尝试。针对新型绝缘气体的基于故障分解物的诊断、检测技术和方法还很少。专利CN201110160224.5提出通过检测电气设备中CF4、 C2F6、C2F4、C3F8及C3F6气体含量,来判断C-C4F8及其与N2、CF4等气体混合气体绝缘电气设备内部的故障情况,但没有提及各气体组分的检测方法。 [0006] Further, there is an electrical equipment in the gases, i.e., the alternative gas SF 6 gas, as mentioned in Patent square bar 00,610,160,462.5 use it, 02, dry air, square) 2,0? 4, (3-04? 8 Shang monomer gas or any one from among 31, or any 2? 6,03? 80? gas in these two types of mixed gas and the above mixed gas as an insulating gas for gas-insulated electrical equipment. Some attempts have been applied during the. insulating gas for novel diagnostics, fault detection techniques and methods based on decomposition are few. Patent CN201110160224.5 proposed by electric equipment CF4, C2F6, C2F4, C3F8 and C3F6 gas content, to determine the failure of the internal and C-C4F8 and N2, CF4 and other gases mixed gas insulated electric apparatus, but there is no mention of the detection method of each gas component.

[0007] 此外还有厂矿企业、大气环境、人体呼出气体等场合的气体检测也有越来越多的需求。 [0007] There are also gas detection factories and mines, atmospheric environment, human exhaled gas and other occasions, there are more and more demands.

[0008] 对于上述气体的检测分析目前已有一些技术,如半导体传感器法,红外光谱法,气相色谱法,光声光谱法等,其中只有红外光谱法、气相色谱法具有较强的通用性,但红外光谱法检测精度低,而气相色谱法监测过程需要载气,增加了维护量。 [0008] Analysis for the detection of the gas present, some techniques, such as semiconductor sensors, infrared spectroscopy, gas chromatography, photoacoustic spectroscopy and the like, wherein only the infrared spectroscopy, gas chromatography with a strong versatility, However, low detection accuracy of infrared spectroscopy, gas chromatography and the monitoring process requires the carrier gas, increased maintenance.

[0009] 光声光谱法是一种新型的高精度气体浓度检测方法,但针对特定的气体需要安装特定的滤光片,如要建立一个能同时检测多种气体如油中溶解气体、SF6故障分解气体、氟碳混合气体故障分解气体、人体呼出气体等的设备,则需要安装约三十多块甚至更多的滤光片,如采用目前已有光声光谱中滤光片的安装结构,则由于体积限制无法实现。 [0009] Photoacoustic spectroscopy is a new method for detecting gas concentration with high accuracy, but for a particular gas requires installation of special filters such as to create a simultaneous detection of multiple gases, such as dissolved gases in oil, SF6 fault decomposed gas, a mixed gas of fluorocarbon gas decomposition fault, devices like human exhaled breath, you need to install even more about thirty plurality of filters, there are employed as the photoacoustic spectrum filter mounting structure, due to the size limit can not be achieved. 同时,现有的光声光谱检测装置滤光片盘都固定安装在监测装置中,滤光片的波长固定,只能监测某几种固定的气体。 Meanwhile, the conventional photoacoustic spectroscopy filter disc detecting means are fixedly mounted in the monitoring apparatus, the fixed wavelength filters, only a few fixed gas monitoring. 如图1所示为一滤光片盘为圆形结构,绕中心的转轴对称开有8个滤光片安装孔。 As shown in FIG. 1 is a circular filter plate structure, symmetrically about the central shaft 8 is opened filter mounting holes. 该结构下如要在滤光片盘上装更多的滤光片,则需要增大滤光片盘直径,造成滤光片盘尺寸太大,导致检测设备体积大,同时大的滤光片盘导致驱动滤光片盘稳定旋转也较困难。 To coat this configuration more filters in the filter disc, the disc is necessary to increase the diameter of the filter, causing the filter disc size is too large, resulting in a large volume of detection equipment, while a large filter disc resulting in a steady rotation disk filter driver is also more difficult. [〇〇1〇]图1为传统光声光谱检测装置滤光盘结构示意图。 [〇〇1〇] FIG. 1 is a schematic view of a conventional filter disk apparatus configuration photoacoustic spectroscopy. 如图1所示,滤光片盘为圆形结构,绕中心的转轴对称开有8个滤光片安装孔。 As shown, the filter disk 1 is a circular structure, symmetrically about the central shaft 8 is opened filter mounting holes. 发明内容 SUMMARY

[0011] 本发明的目的是克服现有技术的不足,提出一种插拔式滤光片盘结构的光声光谱检测装置。 [0011] The object of the present invention is to overcome the disadvantages of the prior art, to provide a plug-in disk structure photoacoustic spectroscopy detection filter means. 本发明体积小、成本低,可靠性高,适用于各种电气设备故障分解气体的检测。 The present invention is of small size, low cost, high reliability, for a variety of electrical equipment fault detection decomposed gas.

[0012] 光声光谱技术基于光声效应。 [0012] photoacoustic effect based on photoacoustic spectroscopy technique. 光声效应由气体分子吸收电磁波而产生,气体分子吸收特定波长的电磁波后至激发态,随即以释放热能的方式退激,释放出的热能在气体中产生压力波,压力波的强度与气体分子的浓度成比例,通过检测吸收不同波长而产生的压力波的强度,可得到不同气体组分的浓度。 Photoacoustic effect should produce gas molecules absorb electromagnetic waves, the electromagnetic wave absorption of gas molecules to an excited state of a specific wavelength, so as to immediately release the de-excitation of thermal energy, thermal energy released in the gas pressure wave, the intensity of the pressure wave with gas molecules proportional to the concentration, by detecting the intensity of pressure waves generated by the absorption of different wavelengths, concentrations of the different gas components is obtained.

[0013] 本发明的气体光声光谱检测装置主要包括:光声光谱检测装置箱体、光源、机械斩光器、斩光器控制器、插拔式滤光片盘、插拔式滤光片盘驱动器、插拔式滤光片盘固定销、光声池、循环气栗、电磁阀、出光口抛物面反光镜、高灵敏度传声器、锁相放大器,以及嵌入式主机。 [0013] photoacoustic gas detection apparatus according to the present invention includes: detecting means of photoacoustic spectroscopy housing, a light source, a mechanical chopper, the chopper control, plug-in filter plate, filter pluggable disk drives, fixed disk filter plug pin, photoacoustic cell recycle gas Li, solenoid valves, light outlet parabolic reflector, high sensitivity microphone, lock-in amplifier, and the embedded host. 所述光源固定在光声光谱检测装置的箱体上,光源的中心线与光声池的中心线对应; 所述的光声池的制作材料为铝合金、铝、黄铜或不锈钢。 The light source is fixed to the case detection means of photoacoustic spectroscopy, photoacoustic cell center line of a corresponding light source; photoacoustic cell production of materials for the aluminum alloy, aluminum, brass or stainless steel. 所述光声池包括进气口、出气口、入光口、出光口、传声器安装口。 The photoacoustic cell includes an air inlet, an air outlet, into the optical port, an optical port, mounted microphone port. 光声腔的直径®为3〜100mm、长度L为20〜500mm,且满足直径〇小于长度L。 ® photoacoustic cell diameter of 3~100mm, a length L of 20~500mm, satisfying square diameter smaller than the length L. 光声池的轴向两端开有圆形通孔,分别为入光口和出光口。 Both axial ends open photoacoustic cell has circular through hole, respectively, the light entrance and the light exit opening. 所述入光口安装有高透光率的玻璃窗;所述出光口安装有出光口抛物面反光镜。 The optical port is attached to the glazing high light transmittance; the light outlet opening is attached to the light parabolic reflector. 垂直于光声池轴向的光声池侧壁上分别开有进气口和出气口。 Photoacoustic cell perpendicular to the side wall of the photoacoustic cell axis are opened an intake port and an air outlet. 所述进气口和出气口位于光声池同一侧,且沿光声池轴线方向分布。 The air inlet and outlet on the same side of the photoacoustic cell, and distributed along the axial direction of the photoacoustic cell. 所述进气口在入光口一侧,所述出气口在出光口一侧。 The air inlet port side in the light, the light in the outlet port side. 同时在光声池侧壁中部与中心线垂直的位置处开有传声器安装口,高灵敏度传声器安装在所述传声器安装口上。 At the same time the position of the photoacoustic cell in the middle of the side wall perpendicular to the centerline of a microphone mounting opening is opened, the high sensitivity of the microphone mounted on a microphone mounting opening.

[0014] 所述光声池的进气口和出气口分别接气体管路,气体管路上装有电磁阀,电磁阀控制管路的通断。 [0014] The photoacoustic cell air inlet and outlet respectively connected to gas lines, gas pipeline equipped with an electromagnetic valve, a solenoid valve on-off control line. 由循环气栗驱动被检测气体经管路从外部进气口进入,从外部的出气口返回。 Driven by a gas to be detected recycle gas through line Li from the outside air intake, air outlet returned from outside. 所述电磁阀分别安装在光声池的进气口一侧和出气口一侧,固定在检测装置箱体上。 The solenoid valves are mounted at the inlet side and the outlet side of the photoacoustic cell, detecting means fixed to the housing.

[0015] 每台检测装置可以配置多个插拔式滤光片盘。 [0015] Each detecting device may be configured to filter the plurality of pluggable disk. 每个插拔式滤光片盘都包括滤光片安装盘、滤光片、转轴及固定滤光片安装盘的插拔式固定仓。 Each filter disc comprises a plug-in filter mounting plate, filters, and rotary shaft fixed filter cartridge attaching the detachable fixing plate. 所述的固定仓两侧开有卡槽, 该卡槽与插拔式滤光片盘固定销相配合,使得插拔式滤光片盘可以插入。 The fixed sides opened cartridge slot, the slot and filter pluggable mating pin fixing plate, so that the plug can be inserted into the disc filter. 插拔式滤光片盘固定销安装在光声光谱检测装置箱体上。 Filter plug pin fixing plate mounted on the housing means detecting photoacoustic spectroscopy.

[0016] 所述的滤光片安装盘通过转轴安装在固定仓里,滤光片安装盘可绕轴旋转。 Filter mounting plate [0016] via a shaft mounted in said fixed magazine, the filter mounting plate is rotatable about an axis. 所述滤光片安装盘可以是圆盘形结构,滤光片安装盘的盘面围绕其中心开有一定数量的滤光片安装孔,安装孔上安装有滤光片。 The filter mounting plate may be disc-shaped configuration, the filter installation disk filters mounted disk is opened a number of holes around its center, is mounted on the filter mounting hole. 插拔式滤光片盘驱动器包括驱动电机、连接器和固定支架。 Filter pluggable disk drive includes a drive motor, the connector and mounting bracket. 连接器将插拔式滤光片盘的转轴与驱动电机的轴连接起来,驱动插拔式滤光片安装盘旋转。 The spindle shaft is connected with the driving motor of the disc filter plug-connected, plug-driven rotary disc filter installation.

[0017] 所述的滤光片安装盘的结构也可以是齿轮状结构,即滤光片安装盘的外侧边缘开有齿槽,滤光片安装盘上围绕中心开有一定数量的滤光片安装孔,该安装孔上安装有滤光片。 [0017] The filter mounting structure of the disc may also be a gear-like structure, i.e., the outer edge of the filter mounting plate alveolar opened, opening a certain number of filters mounted on the filter disc about a central mounting hole, the filter is mounted on the mounting hole. 插拔式滤光片盘驱动器包含包括驱动电机,驱动齿轮和可调安装座。 Filter pluggable disk drive includes a drive comprising a motor, a drive gear and adjustable mounts. 所述驱动齿轮与驱动电机共轴,由驱动电机带动驱动齿轮旋转。 The driving gear coaxially with the driving motor, by a driving motor driving the driving gear. 所述驱动电机固定在可调安装座上,驱动电机可上下移动;可调安装座安装在光声光谱检测装置箱体上。 The driving motor is fixed to an adjustable mounting base, the driving motor can be moved up and down; kinematic mount mounted on the housing means detecting photoacoustic spectroscopy. 插拔式滤光片盘插入后,所述的驱动齿轮工作时与滤光片安装盘外侧边缘的齿槽咬合,驱动滤光片安装盘绕轴旋转。 After the plug is inserted into the filter plate, said driving gear and alveolar work outside edge of disk filters mounted engagement, rotation of drive shaft coil mounted filter.

[0018] 所述插拔式滤光片盘驱动器由嵌入式主机控制。 [0018] The filter pluggable disk drive is controlled by the embedded host.

[0019] 所述机械斩光器放置在光源的出口端,固定在光声光谱检测装置箱体上。 [0019] The mechanical chopper is placed at the outlet end of the light source, is fixed to the housing means of photoacoustic spectroscopy detection. 插拔式滤光片盘固定销的位置在机械斩光器后,使得插拔式滤光片盘插入后位于机械斩光器后。 The position fixing pin pluggable filter disk after a mechanical chopper, such filter plug is inserted after the disk is at a mechanical chopper. 同时,光声池位于插拔式滤光片盘之后。 Meanwhile, the photoacoustic cell is placed after the plug-in filter plate.

[0020] 机械斩光器经由信号线缆与斩光器控制器连接。 [0020] a mechanical chopper is connected via the signal cable and the chopper controller. 机械斩波器的斩光调制频率由斩光器控制器控制,并通过BNC信号线将斩光调制频率信号传输给锁相放大器。 Chopper modulation frequency by a mechanical chopper controller controls the chopper, and a signal line through BNC chopper modulation frequency signal to the lock-in amplifier. 插拔式滤光片盘对调制过的红外光进行滤波,透射过滤光片的红外光经过光声池的入光口射入,经出光口射出,出光口抛物面反光镜把红外光反射回光声腔,并聚焦于光声腔的几何中心。 Pluggable filter disk of modulated infrared light is filtered through the filter transmitting light input port through the infrared light incident photoacoustic cell, the light emitted by the mouth, the light outlet parabolic reflector is reflected back to the infrared light photoacoustic cell, and the geometric center of the light focused on the acoustic cavity. 在光声腔中产生的光声信号由安装在光声池侧壁上的高灵敏度传声器接收,并通过抗干扰信号线传输至锁相放大器处理,处理后再经过RS485/232电缆传输至嵌入式主机。 Photoacoustic signal generated in the photoacoustic cell is received by the high sensitivity of the microphone mounted on the side wall of the photoacoustic cell, and interference to the signal transmitted through the lock-in amplifier line processing, after processing through RS485 / 232 to the embedded host cable transmission .

[0021] 所述高灵敏度传声器的频率响应范围是0.1Hz〜30kHz,灵敏度大于20mV/Pa。 Frequency response range of the [0021] high-sensitivity microphone is 0.1Hz~30kHz, sensitivity is greater than 20mV / Pa. 所述锁相放大器的频率范围为ImHz〜102.4kHz,灵敏度为2nV〜IV,增益精确度为± 1 %,动态存储>100dB,具有GPIB和RS232两种接口。 Frequency range of the lock-in amplifier is ImHz~102.4kHz, sensitivity 2nV~IV, gain accuracy of ± 1%, dynamic storage> 100dB, having GPIB and RS232 interfaces. 斩光器控制器的输出端口与所述的锁相放大器通过BNC信号线相连,斩光器的调制频率作为参考频率由斩光器控制器的输出端口传送到锁相放大器,锁相放大器的输出信号经RS485/232传输到嵌入式主机处理得到分解气体种类、浓度等信息。 Chopper controller output port to the lock-in amplifiers are connected by BNC signal line, the chopper modulation frequency transmitted to the lock-in amplifier lock-in amplifier as a reference frequency output by the chopper controller output port signal RS485 / 232 is transmitted to the embedded host treated to obtain the decomposition gas type, concentration and other information. 附图说明 BRIEF DESCRIPTION

[0022] 图1传统光声光谱检测装置滤光片盘结构示意图; [0022] FIG 1 a conventional filter apparatus of photoacoustic spectroscopy schematic structural diagram of the disc;

[0023] 图2本发明检测装置实施方式一的结构示意图; [0023] FIG. 2 embodiment of the inventive device detecting a schematic structural diagram of embodiment;

[0024] 图3a为本发明检测装置实施方式一的插拔式滤光片安装盘5的结构示意图; [0024] FIG. 3a of the present embodiment of a detecting device according to the invention of the plug-mounting structure diagram of the filter disc 5;

[0025] 图3b为本发明检测装置实施方式一的插拔式滤光片安装盘5的截面结构示意图; [0025] FIG. 3b apparatus of the present embodiment of the invention the detection of a plug-in filter mounting plate 5 is a schematic cross-sectional configuration;

[0026] 图4本发明检测装置实施方式一的插拔式滤光片盘与插拔式滤光片盘驱动器的结合方式结构示意图; [0026] Figure 4 in conjunction with the detection device of embodiments of the invention a plug-in filter plate and filter pluggable schematic structural diagram of a disk drive;

[0027] 图5本发明检测装置实施方式二示意图; [0027] FIG. 5 detecting apparatus of the second embodiment schematic view of the invention;

[0028] 图6本发明检测装置实施方式二的插拔式滤光片盘5结构示意图; 5 pluggable filter disc structure [0028] FIG. 6 detecting apparatus of Embodiment 2 of the invention, a schematic diagram;

[0029] 图7本发明检测装置实施方式二的插拔式滤光片盘与插拔式滤光片盘驱动器的结合方式结构示意图; Binding structural diagram of embodiment [0029] FIG. 7 detecting apparatus of the second embodiment of the invention, plug-in filter plate and filter pluggable disk drive;

[0030] 图中:1光声光谱检测装置箱体、2光源、3机械斩光器、4斩光器控制器、5插拔式滤光片盘、6插拔式滤光片盘固定销、7光声池、8出光口抛物面反光镜、9高灵敏度传声器、10插拔式滤光片盘驱动器、11锁相放大器、12嵌入式主机、13循环气栗、14、15电磁阀。 [0030] FIG: 1 photoacoustic spectroscopy device case, the light source 2, a mechanical chopper 3, chopper controller 4, 5 pluggable filter plate, filter plate 6 fixed pin pluggable , 7 photoacoustic cell, eight parabolic reflector optical port, 9 high sensitivity microphone, filter 10 pluggable disk drive, lock-in amplifier 11, 12 embedded host, Li recycle gas 13, 14, 15 are solenoid valves. 具体实施方式[〇〇31]以下结合附图和具体实施方式进一步说明本发明。 DETAILED DESCRIPTION [〇〇31] and the following specific embodiments of the present invention is further described in conjunction with the accompanying drawings.

[0032] 如图2所示,本发明检测装置的实施方式一主要包括光声光谱检测装置箱体1、光源2、机械斩光器3、斩光器控制器4、插拔式滤光片盘5、插拔式滤光片盘固定销6、光声池7、 出光口抛物面反光镜8、高灵敏度传声器9、插拔式滤光片盘驱动器10、锁相放大器11、嵌入式主机12、循环气栗13,以及电磁阀14、15。 [0032] 2, the embodiment of the detection device of the present invention mainly comprises a photoacoustic detector apparatus housing 1, the light source 2, a mechanical chopper 3, chopper controller 4, filter pluggable disk 5, the fixing pin pluggable filter disc 6, 7 photoacoustic cell, the light outlet parabolic reflector 8, 9 high sensitivity microphone, the filter plug-in disk drive 10, a lock-in amplifier 11, an embedded host 12 , Li recycle gas 13, and a solenoid valve 14, 15.

[0033] 所述光源2固定在光声光谱检测装置箱体1上,用于斩光调制的机械斩光器3放置在光源2的出口端。 [0033] The light source 2 is fixed to the housing means of photoacoustic spectroscopy detector 1, a chopper for modulating mechanical chopper 3 is placed at the outlet end of the light source 2. 插拔式滤光片盘5通过插拔式滤光片盘固定销6固定在机械斩光器3后。 Pluggable filter disc 5 by the fixing pin pluggable filter plate 6 fixed to the mechanical chopper 3. 光声池7位于插拔式滤光片盘5之后固定在光声光谱检测装置箱体1上,且所述光声池7的中心线与光源2的中心线、插拔式滤光片盘5上滤光片安装孔的中心线对应。 After fixing the photoacoustic cell plug 7 is located on the filter disc 5 photoacoustic spectroscopy detection device housing 1, and the photoacoustic cell center line of the light source 7 2, the filter disc pluggable corresponding to the center line 5 of the filter mounting hole. 插拔式滤光片盘驱动器10固定在光声光谱检测装置1上,且与插拔式滤光片盘5的转轴配合,受嵌入式主机12控制驱动插拔式滤光片盘5旋转。 Filter plug 10 is fixed in the disk drive detects the photoacoustic spectroscopy device 1, and is fitted with the shaft of the plug-in type filter disc 5, driven by the embedded host 12 controls the pluggable filter disc 5 is rotated.

[0034] 光源2发出的光经过机械斩光器3斩光后,连续的平行红外光被调制为具有特定调制频率的平行红外光。 [0034] The light emitted from the light source 2 through a mechanical chopper chopper after 3 consecutive parallel infrared light is modulated into a parallel infrared light having a specific frequency modulation. 机械斩光器3执行的斩光调制频率由斩光器控制器4发出,通过信号线缆传输给机械斩光器3,并通过BNC信号线传输给锁相放大器11作为锁相放大器的参考频率。 Chopper modulation frequency of the mechanical chopper 3 is performed by the chopper controller emitted 4, a mechanical chopper 3 transmitted through a signal cable, BNC and signal line for transmitting via lock-in amplifier 11 to a lock-in amplifier as a reference frequency .

[0035] 工作时,透过插拔式滤光片盘5的平行红外光通过光声池7的入光口进入,沿光声池轴向穿过,通过光声池的出光口射出,经过出光口抛物面反光镜8的反射回光声池7,并聚焦于光声池7的几何中心,光程倍增的红外光被分解气体吸收产生光声效应,产生的光声信号由安装在光声池7上的高灵敏度传声器9接收转化为电信号,经过抗干扰信号线进入锁相放大器12,进一步通过RS485/232电缆传输至嵌入式主机12,最终得到被检测的绝缘气体分解气体的组分信息,包括种类、含量等。 [0035] In operation, the parallel through infrared filter pluggable disk 5 passes through the photoacoustic cell enters the light input port 7, through the photoacoustic cell along the axis, the light emitted by the mouth photoacoustic cell, through the light outlet parabolic reflector is reflected back to the photoacoustic cell 8, 7, and focus on the photoacoustic cell geometric center 7, the optical path multiplication infrared light is decomposed gas absorbing photoacoustic effect, the photoacoustic signal generated by the installation photoacoustic high sensitivity of the microphone on the receiver pool 79 into an electrical signal, via signal line interference into the lock-in amplifier 12, a further 12, the finally obtained insulating gas component to be detected by the decomposition gas RS485 / 232 to the embedded host cable transmission information, including the type, content and so on.

[0036] 出光口抛物面反光镜8的形状尺寸与光声池7配合,抛物面焦点在对应光声腔70的几何中心处。 [0036] The light exit of parabolic reflector shape and size of the photoacoustic cell 7 with 8, corresponding to the geometric center of the parabolic focus 70 of the photoacoustic cell.

[0037] 被测气体从图2所示的进气口进入,由循环气栗13驱动沿管路流动,经第一电磁阀14,从光声池7的进气口进入光声腔,再从光声池7的出气口流出,经第二电磁阀15流出。 [0037] measured gas entering from the intake port shown in Figure 2, the driver 13 along the recycle gas line Li flows via the first solenoid valve 14, into the photoacoustic cell photoacoustic cell from an intake port 7, and then from photoacoustic cell effluent outlet 7, flows through the second solenoid valve 15. 所述第一电磁阀14、第二电磁阀15由嵌入式主机14控制通断;所述循环气栗13由嵌入式主机12控制启停。 The first solenoid valve 14, the second solenoid valve 15 on-off control by the embedded host 14; 13 Li said recycle gas 12 is controlled by the embedded host start and stop. 所述第一电磁阀14、第二电磁阀15分别安装在光声池7进气口一侧和出气口一侦I固定在检测装置箱体1上。 The first solenoid valve 14, the second solenoid valve 15 are mounted in the photoacoustic cell 7 side of the air inlet and the air outlet in a fixed investigation I detection apparatus housing 1. [〇〇38]图3a、3b为本发明的插拔式滤光片盘5的结构示意图;如图3所示,插拔式滤光片盘5主要包括固定仓51、转轴53、滤光片安装盘54和滤光片55。 [〇〇38] Figures 3a, 3b of the filter plug of the present invention of structural diagram 5; FIG. 3, the filter plug includes a fixed disc 5 cartridge 51, the rotary shaft 53, a filter mounting plate 54 and filter sheet 55. 所述固定仓51为长方体空腔结构,一侧开孔;固定仓51的两侧开有固定仓卡槽52。 The cartridge 51 is fixed to a rectangular parallelepiped cavity structure, the side opening; fixing both sides of the cartridge 51 is fixed to the cartridge slot 52 is opened. 所述滤光片安装盘54为圆盘状结构,通过转轴53安装在所述固定仓51里;滤光片55以转轴53为中心,对称布置在滤光片安装盘54上。 The filter mounting plate 54 is a disk-shaped structure mounted on the fixed shaft 53 through the cartridge 51 in the; filter 55 to the rotary shaft 53 as the center, symmetrically disposed on the filter mounting plate 54. [0〇39]图4为本发明插拔式滤光片盘5与插拔式滤光片盘驱动器10的结合方式不意图。 Binding mode [0〇39] FIG. 4 of the present invention pluggable filter disc 5 and filter pluggable disk drive 10 is not intended. 如图4所示,插拔式滤光片盘驱动器10包括驱动电机102、连接器101,固定支架103;插拔式滤光片盘5的转轴53通过连接器101与插拔式滤光片盘驱动器10的驱动电机102相连,驱动电机102通过固定支架固定在光声光谱检测装置箱体1上。 As shown, the filter plug-in disk drive 104 includes a drive motor 102, connector 101, the fixing bracket 103; pluggable filter disc 53 of the rotary shaft 5 through the connector 101 and filter pluggable the disk drive 10 is connected to the driving motor 102, the driving motor 102 is fixed to the fixing bracket by photoacoustic spectroscopy detection apparatus housing 1.

[0040]图5为本发明检测装置实施方式二的示意图。 [0040] FIG. 5 is a schematic view of two embodiments of the detection device of the present invention. 如图5所示,该实施方式与图2所示实施方式一的区别在于,插拔式滤光片盘5及插拔式滤光片盘驱动器10不同。 As shown in FIG. 5, the embodiment shown in Fig embodiment 1 except that 2, 10 different plug-in filter plate 5 and filter pluggable disk drive. 插拔式滤光片盘5及插拔式滤光片盘驱动器10的结构分别如图6、7所示。 Structural plate 5 and filter plug-in plug-in filter disk drive 10 are shown in Figure 6,7. [0〇41 ]图6为本发明实施方式二的插拔式滤光片盘5结构不意图。 [0〇41] embodiment of FIG. 6 plug configuration two filter disc 5 of the present invention is not intended. 如图6所不,插拔式滤光片盘5与图3所示的插拔式滤光片盘的区别在于,所述的滤光片安装盘54为齿轮式结构,即滤光片安装盘54的外边缘开有齿槽。 6 are not the difference pluggable filter disc shown pluggable filter disc 5 and FIG. 3 in that the filter disc 54 is a gear mounting structure, i.e., the filter installation the outer edge of the disk 54 is opened cogging.

[0042]图7为本发明实施方式二的插拔式滤光片盘与插拔式滤光片盘驱动器的结合方式结构示意图。 [0042] Figure 7 a schematic structural diagram II binding manner pluggable filter plate and filter pluggable disk drive of the embodiment of the present invention. 如图7所示,插拔式滤光片盘驱动器10包括驱动齿轮101、驱动电机102、驱动电机安装座103。 7, the filter plug-in disk drive 10 includes a drive gear 101, the driving motor 102, the driving motor mount 103. 插拔式滤光片盘5安装到位后,驱动齿轮101与插拔式滤光片盘5齿轮咬合,咬合部位104如图7所示。 After the plug-in filter disc 5 is mounted in place, the driving gear 101 and the plug-in filter plate 5 engaging the gear, engaging portion 104 as shown in FIG.

Claims (4)

  1. 1.一种插拔式滤光片盘结构的光声光谱检测装置,其特征在于:所述的检测装置包括光声光谱检测装置箱体(1)、光源(2)、机械斩光器(3)、斩光器控制器(4)、插拔式滤光片盘(5)、插拔式滤光片盘固定销(6)、光声池(7)、出光口抛物面反光镜(8)、高灵敏度传声器(9)、插拔式滤光片盘驱动器(10)、锁相放大器(11)、嵌入式主机(12)、循环气栗(13),以及电磁阀(14、15);所述光源(2)安装在光声光谱检测装置箱体(1)上,光源(2)的中心线与光声池(7)的中心线对应;所述机械斩光器(3)放置在光源(2)的出口端,插拔式滤光片盘固定销(6)固定在光声光谱检测装置箱体(1)上且位于机械斩光器(3)后;所述插拔式滤光片盘(5)为可调换式,能够从光声光谱检测装置箱体(1)上取下,也能够通过卡槽与插拔式滤光片盘固定销(6)配合固定;光声池(7)位于插拔式滤光片盘(5)之后,且工作时光声池的中 A photoacoustic spectroscopy apparatus pluggable filter disc structure, wherein: said detecting means comprises a detecting means of photoacoustic spectroscopy housing (1), a light source (2), a mechanical chopper ( 3), the chopper controller (4), plug-in filter disc (5), the filter plug-in pin fixed plate (6), the photoacoustic cell (7), an optical port parabolic reflector (8 ), high-sensitivity microphone (9), the filter plug-in disk drive (10), lock-in amplifier (11), an embedded host (12), the recycle gas chestnut (13), and a solenoid valve (14, 15) ; said light source (2) mounted on the housing of photoacoustic spectroscopy detection device (1), a light source (2) with the center line of the photoacoustic cell (7) corresponding to the center line; said mechanical chopper (3) is placed after the outlet end of the light source (2), the plug-in pin fixed to the filter plate (6) fixed to the casing of photoacoustic spectroscopy detection device (1) and is located in a mechanical chopper (3); said pluggable filter disc (5) of the interchangeable type, can be removed from the photoacoustic spectroscopy device casing (1), fixing the slot can be fitted by a fixing pin pluggable filter disc (6); a light after the photoacoustic cell (7) is detachable filter disc (5), and the working time in the photoacoustic cell 线与插拔式滤光片盘(5)上的滤光片中心线重合;光声池(7)的轴向两端开有圆形通孔,分别为入光口和出光口;所述入光口安装有玻璃窗;光声池的出光口端安装有出光口抛物面反光镜(8);垂直于光声腔轴向的光声池侧壁上开有进气口和出气口;所述进气口和出气口位于光声池的同一侧,且沿光声池轴线方向分布;所述进气口在入光口一侧,所述出气口在出光口一侧;在光声池侧壁对应光声腔的位置处开有传声器安装口,高灵敏度传声器(9)安装在所述传声器安装口上;所述光声池(7)的进气口和出气口分别接气体管路,气体管路上装有电磁阀(14、15),所述电磁阀(14、15)分别安装在光声池(7)进气口一侧和出气口一侧, 固定在检测装置箱体(1)上;由循环气栗(13)驱动被检测气体经管路从进气口进入,从出气口返回;所述的插拔式滤光片盘(5)由插拔式滤光片盘驱动器(10 Filter on line with the center line of plug-in filter disc (5) coinciding; both axial ends of the photoacoustic cell (7) with a circular through hole opened, respectively, the light entrance and the light exit opening; the is attached to the light entrance windows; light outlet end of the photoacoustic cell is attached to the light outlet parabolic reflector (8); photoacoustic cell perpendicular to the axial direction of the photoacoustic cell sidewall intake opening and an air outlet port; the the same side of the air inlet and the air outlet is located in the photoacoustic cell, and distributed along the axial direction of the photoacoustic cell; the gas inlet port side in the light, the light in the outlet port side; the side photoacoustic cell light at a position corresponding to the acoustic cavity wall microphone mounting opening is opened, high-sensitivity microphone (9) is mounted on the mounting opening microphone; the photoacoustic cell (7) of the air inlet and outlet respectively connected to gas lines, gas pipes a solenoid valve path (14, 15), said solenoid valve (14, 15) are mounted on (7) an intake port side and outlet side of the photoacoustic cell, detecting means fixed to the housing (1) ; Li from the circulation gas (13) via line driving gas to be detected from entering the intake port, to return from the outlet port; a plug-in filter disc (5) by a plug-in filter disk drive (10 )驱动;插拔式滤光片盘驱动器(10)受嵌入式主机(12)控制;机械斩光器(3)经由信号线缆与斩光器控制器(4)连接, 机械斩光器(3)的斩光调制频率由斩光器控制器(4)控制,并通过BNC信号线将斩光调制频率信号传输给锁相放大器(11);在光声池(7)中产生的光声信号由安装在光声池侧壁上的高灵敏度传声器(9)接收,并通过抗干扰信号线传输至锁相放大器(11)处理,处理后再经过RS485/232电缆传输至嵌入式主机(12)。 ) Driving; filter pluggable disk drive (10) embedded by a host (12) control; mechanical chopper (3) (4) is connected via the signal cable and the chopper controller, a mechanical chopper ( 3) the modulation frequency of the chopper (4) is controlled by the chopper controller, and the signal line via a BNC chopper modulation frequency signal to the lock-in amplifier (11); photoacoustic generated in the photoacoustic cell (7) signal is received by the high sensitivity of the microphone (9) mounted on the side wall of the photoacoustic cell, and interference to the signal line for transmitting via lock-in amplifier (11) for processing and then through RS485 / 232 to the embedded host cable transmission (12 ).
  2. 2.按照权利要求1所述的光声光谱检测装置,其特征在于所述的插拔式滤光片盘(5)包括固定仓(51)、转轴(53)、滤光片安装盘(54)和滤光片(55);所述固定仓(51)为长方体空腔结构,一侧开孔;固定仓(51)的两侧开有固定仓卡槽(52);所述滤光片安装盘(54)为圆盘状结构,通过转轴(53)安装在所述固定仓(51)里;滤光片(55)以转轴(53)为中心,对称的布置在滤光片安装盘(54)上;所述的滤光片安装盘(54)由插拔式滤光片盘驱动器(10)驱动;所述插拔式滤光片盘驱动器(10)包括连接器(101)、驱动电机(102)以及固定支架(103);插拔式滤光片盘(5)的转轴(53)通过连接器(101)与插拔式滤光片盘驱动器(10)连接。 , The shaft (53), the filter mounting plate 2. The photoacoustic detection apparatus according to claim 1, wherein said plug-in filter disc (5) comprises a fixed bin (51) (54 ) and filter (55); fixing said magazine (51) is a rectangular parallelepiped cavity structure, the side opening; fixing both sides of the cartridge (51) is fixed cartridge slot opening (52); said filter mounting plate (54) is a disc-shaped configuration, the shaft (53) mounted on said fixed magazine (51) where; filter (55) to the shaft (53) as the center, symmetrically arranged in the filter mounting plate (54); said filter mounting plate (54) is driven by a disk drive filter plug (10); said detachable filter disk drive (10) includes a connector (101), a drive motor (102) and a fixed bracket (103); plug-filter disc (5) of the shaft (. 53) is connected by a connector (101) and filter pluggable disk drive (10).
  3. 3.按照权利要求1所述的光声光谱检测装置,其特征在于:所述的插拔式滤光片盘(5) 包括固定仓(51)、转轴(53)、滤光片安装盘(54)和滤光片(55);所述固定仓(51)为长方体空腔结构,一侧开孔;固定仓(51)的两侧开有固定仓卡槽(52);所述滤光片安装盘(54)为齿轮状结构,即滤光片安装盘(54)的外侧边缘有齿槽,该齿槽与盒滤光片盘驱动器(10)中驱动齿轮(101)的齿槽相配合;所述滤光片安装盘(54)通过转轴(53)安装在所述固定仓(51)里; 滤光片(55)以转轴(53)为中心,对称布置在滤光片安装盘(54)上;所述的插拔式滤光片盘驱动器(10)包括驱动齿轮(101)、驱动电机(102)和驱动电机安装座(103),驱动齿轮(101) 与驱动电机(102)的轴连接,驱动电机(102)安装在驱动电机安装座(103)上。 3. The photoacoustic detection apparatus according to claim 1, wherein: the plug-in filter disc (5) comprises a fixed cartridge (51), the shaft (53), the filter mounting plate ( 54) and a filter (55); fixing said magazine (51) is a rectangular parallelepiped cavity structure, the side opening; fixing both sides of the cartridge (51) is fixed cartridge slot opening (52); said filter sheet mounting plate (54) is a gear-like structure, i.e., the outer edge of the filter mounting plate (54) has a cogging, the alveolar and alveolar filter disk cartridge drive (10) in the driving gear (101) relative to mating; said filter mounting plate (54) mounted on said fixed magazine (51) in the through axis (53); a filter (55) to the shaft (53) as the center, symmetrically arranged in the filter mounting plate (54); said plug-in filter disk drive (10) includes a drive gear (101), a drive motor (102) and a drive motor mount (103), the driving gear (101) and the drive motor (102 ) of the shaft, the driving motor (102) is mounted on a drive motor mount (103).
  4. 4.按照权利要求1所述的光声光谱检测装置,其特征在于:所述的光声池(7)的制作材料为铝合金或铝或黄铜或不锈钢。 4. The photoacoustic detection apparatus according to claim 1, wherein: the photoacoustic cell (7) is made of aluminum or aluminum alloy or material is brass or stainless steel.
CN 201410455933 2014-09-09 2014-09-09 One kind of plug-in disk structure photoacoustic spectroscopy detection filter means CN104198394B (en)

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