CN110361185A - A kind of optical measuring device for gas turbine fuel nozzle - Google Patents
A kind of optical measuring device for gas turbine fuel nozzle Download PDFInfo
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- CN110361185A CN110361185A CN201910769194.4A CN201910769194A CN110361185A CN 110361185 A CN110361185 A CN 110361185A CN 201910769194 A CN201910769194 A CN 201910769194A CN 110361185 A CN110361185 A CN 110361185A
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- 239000000446 fuel Substances 0.000 title claims abstract description 21
- 230000003287 optical effect Effects 0.000 title claims abstract description 16
- 239000003595 mist Substances 0.000 claims abstract description 59
- 239000007921 spray Substances 0.000 claims abstract description 56
- 238000005259 measurement Methods 0.000 claims abstract description 30
- 238000012545 processing Methods 0.000 claims abstract description 11
- 239000013307 optical fiber Substances 0.000 claims abstract description 4
- 238000009826 distribution Methods 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims 2
- 239000003921 oil Substances 0.000 description 63
- 238000000034 method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
本发明涉及一种用于燃气轮机燃油喷嘴的光学测量装置，包括喷雾室，喷雾室的上端设置有待测喷嘴，向喷雾室内喷射，在喷雾室内还设置有横向片光源镜头组，位于待测喷嘴的正下方，喷雾室的上方设置有横向CCD摄像机，横向CCD摄像机的输出端与处理系统的输入端相连，喷雾室的左侧或右侧设置有纵向片光源镜头，后侧设置有纵向CCD摄像机，两者的工作端呈90°设置，纵向CCD摄像机的输出端与处理系统的输入端相连，所述激光发生器通过光纤与横向片光源镜头组和纵向片光源镜头相连。本发明实现对喷雾锥角和油雾径向均匀性进行定量测量，提高测量效率和测量精度，并实时保存图像数据，增加可追溯性。
The invention relates to an optical measurement device for gas turbine fuel nozzles, comprising a spray chamber, the upper end of the spray chamber is provided with a nozzle to be tested, which sprays into the spray chamber, and a transverse light source lens group is also arranged in the spray chamber, which is located at the nozzle to be tested. Directly below the spray chamber, a horizontal CCD camera is installed above the spray chamber, and the output end of the horizontal CCD camera is connected to the input end of the processing system. A vertical light source lens is installed on the left or right side of the spray chamber, and a vertical CCD camera is installed on the rear side. , the working ends of the two are set at 90°, the output end of the longitudinal CCD camera is connected with the input end of the processing system, and the laser generator is connected with the horizontal sheet light source lens group and the longitudinal sheet light source lens through optical fibers. The invention realizes the quantitative measurement of the spray cone angle and the radial uniformity of the oil mist, improves the measurement efficiency and accuracy, saves the image data in real time, and increases the traceability.
Description
技术领域technical field
本发明属于燃气轮机燃烧室试验领域，涉及一种用于燃气轮机燃油喷嘴的光学测量装置。The invention belongs to the field of gas turbine combustion chamber test, and relates to an optical measuring device for a gas turbine fuel nozzle.
背景技术Background technique
在燃气轮机燃油喷嘴制造和维修过程中，需要对燃油喷嘴进行喷嘴角度测量。During the manufacture and maintenance of gas turbine fuel nozzles, it is necessary to measure the nozzle angle of the fuel nozzles.
目前，对于油雾角度测量国内厂家通常采取机械刻度式的方法进行测量，其判断全部依靠现场调试工人的经验进行，仅能做到定性测量而无法定量测量，且自动化程度低，无法保存图像资料，可追溯性差。对于油雾径向均匀性测量通常采用人工12等分称重法进行测量，测量过程效率低、误差大、可追溯性差。At present, for the oil mist angle measurement, domestic manufacturers usually adopt a mechanical scale method for measurement, and the judgment is all based on the experience of the on-site commissioning workers, which can only achieve qualitative measurement but not quantitative measurement, and the degree of automation is low, so it is impossible to save image data , poor traceability. The radial uniformity of oil mist is usually measured by manual 12 equal parts weighing method, which has low efficiency, large error and poor traceability in the measurement process.
有鉴于上述的缺陷，本设计人，积极加以研究创新，以期创设一种新型结构的用于喷雾锥角和油雾径向分布测量，使其效率和准确性更高、更具有产业上的利用价值。In view of the above-mentioned defects, the designer is actively researching and innovating in order to create a new structure for the measurement of the spray cone angle and the radial distribution of oil mist, making it more efficient and accurate, and more industrially applicable value.
发明内容Contents of the invention
为解决上述技术问题，本发明的目的是提供一种用于燃气轮机燃油喷嘴的光学测量装置。In order to solve the above technical problems, the object of the present invention is to provide an optical measurement device for gas turbine fuel nozzles.
为实现上述目的，本发明采用如下技术方案：To achieve the above object, the present invention adopts the following technical solutions:
一种用于燃气轮机燃油喷嘴的光学测量装置，包括喷雾室，所述喷雾室的上端设置有待测喷嘴，向喷雾室内喷射，在喷雾室内还设置有横向片光源镜头组，位于待测喷嘴的正下方，所述喷雾室的上方设置有横向CCD摄像机，当横向片光源镜头组对待测喷嘴喷射的油雾进行横向照射时，使其产生一环状油雾结构，并由横向CCD摄像机拍摄该环状油雾结构设置，所述横向CCD摄像机的输出端与处理系统的输入端相连，所述喷雾室的左侧或右侧设置有纵向片光源镜头，后侧设置有纵向CCD摄像机，两者的工作端呈90°设置，当纵向片光源镜头对待测喷嘴喷射的油雾进行纵向照射时，产生一油雾锥形结构，由纵向CCD摄像机拍摄该油雾锥形结构设置，所述纵向CCD摄像机的输出端与处理系统的输入端相连，所述激光发生器通过光纤与横向片光源镜头组和纵向片光源镜头相连。An optical measurement device for fuel nozzles of gas turbines, comprising a spray chamber, the upper end of the spray chamber is provided with a nozzle to be tested, which sprays into the spray chamber, and a transverse sheet light source lens group is also arranged in the spray chamber, which is located at the nozzle to be tested. Directly below, a horizontal CCD camera is set above the spray chamber. When the horizontal film light source lens group irradiates the oil mist sprayed by the nozzle to be tested horizontally, it will produce a ring-shaped oil mist structure, and the horizontal CCD camera will shoot the oil mist. The annular oil mist structure is set, the output end of the horizontal CCD camera is connected with the input end of the processing system, the left or right side of the spray chamber is provided with a longitudinal sheet light source lens, and the rear side is provided with a longitudinal CCD camera. The working end of the machine is set at 90°. When the longitudinal sheet light source lens irradiates the oil mist sprayed by the nozzle to be tested longitudinally, an oil mist cone-shaped structure is generated, and the oil mist cone-shaped structure is captured by a longitudinal CCD camera. The longitudinal CCD The output end of the camera is connected with the input end of the processing system, and the laser generator is connected with the lens group of the transverse light source and the lens of the longitudinal light source through the optical fiber.
优选地，所述横向片光源镜头组和纵向片光源镜头的照射光源为片光源激光，其片光源厚度在0.5～1.5mm。Preferably, the irradiation light source of the transverse sheet light source lens group and the vertical sheet light source lens is sheet light source laser, and the thickness of the sheet light source is 0.5-1.5 mm.
优选地，所述喷雾室为不透光的箱体结构，所述喷雾室上设置有观察窗。Preferably, the spray chamber is a light-tight box structure, and an observation window is arranged on the spray chamber.
优选地，所述横向片光源镜头组由6-12个圆形的片光源镜头构成，且构成间隔相等的圆形分布设置。Preferably, the horizontal sheet light source lens group is composed of 6-12 circular sheet light source lenses, which are arranged in a circular distribution with equal intervals.
优选地，所述喷雾室的下方设置有回油管，与回收油箱相连通。Preferably, an oil return pipe is provided below the spray chamber, which communicates with the recovery oil tank.
优选地，所述喷雾室内靠下方位置设置有粗细双层滤网，粗滤网网孔在10-200目之间，细滤网网孔在200-800目之间，所述粗细双层滤网位于回油管的输入口处。Preferably, a thick and fine double-layer filter is arranged at the lower part of the spray chamber, the mesh of the coarse filter is between 10-200 mesh, and the mesh of the fine filter is between 200-800 mesh. The net is located at the inlet of the oil return line.
优选地，所述待测喷嘴通过供油管与供油装置相连通。Preferably, the nozzle to be tested communicates with the oil supply device through an oil supply pipe.
优选地，所述喷雾室内侧壁或下方设置有照明装置。Preferably, an illuminating device is provided on the side wall or below the spray chamber.
优选地，所述喷雾室的下方设置有通风口。Preferably, a vent is provided below the spray chamber.
优选地，所述处理系统为电脑或单片机。Preferably, the processing system is a computer or a single-chip microcomputer.
借由上述方案，本发明至少具有以下优点：By means of the above solution, the present invention has at least the following advantages:
1、本发明在CCD相机拍摄时为暗室，仅片光源提供油雾照明，保证光照亮度的一致性，避免杂光降低判定精度。1. The present invention is a dark room when shooting with a CCD camera, and only the sheet light source provides oil mist lighting to ensure the consistency of light brightness and avoid stray light from reducing the judgment accuracy.
2、本发明采用激光片光源照射油雾锥，片光源厚度在0.5～1.5mm之间，有效的消除了照射的油雾厚度大而造成的锥角出现偏差的问题。2. The present invention uses a laser sheet light source to irradiate the oil mist cone, and the thickness of the sheet light source is between 0.5 and 1.5 mm, which effectively eliminates the problem of deviation of the cone angle caused by the large thickness of the irradiated oil mist.
3、本发明采用6～12个横向片光源镜头照射油雾，保证了整个油雾环照射亮度的一致性，最大程度消除了因油雾吸收激光而造成激光亮度衰减导致测量精度降低问题。3. The present invention uses 6 to 12 horizontal light source lenses to irradiate the oil mist, which ensures the consistency of the illumination brightness of the entire oil mist ring, and eliminates the problem of reduced measurement accuracy caused by laser brightness attenuation caused by oil mist absorption of laser light to the greatest extent.
4、本发明采用CCD摄像机记录图像，并使用计算机进行自动判断，有效的消除了人为判定的不确定性，提高了油雾锥角和径向均匀性判定的一致性。4. The present invention uses a CCD camera to record images and uses a computer for automatic judgment, which effectively eliminates the uncertainty of human judgment and improves the consistency of oil mist cone angle and radial uniformity judgment.
5、本发明实现对喷雾锥角和油雾径向均匀性进行定量测量，提高测量效率和测量精度，并实时保存图像数据，增加可追溯性。5. The invention realizes the quantitative measurement of the spray cone angle and the radial uniformity of the oil mist, improves the measurement efficiency and accuracy, and saves the image data in real time to increase the traceability.
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，并可依照说明书的内容予以实施，以下以本发明的较佳实施例并配合附图详细说明如后。The above description is only an overview of the technical solutions of the present invention. In order to understand the technical means of the present invention more clearly and implement them according to the contents of the description, the preferred embodiments of the present invention and accompanying drawings are described in detail below.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.
图1是本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图2是本发明的横向片光源镜头组的结构示意图。Fig. 2 is a structural schematic diagram of the transverse sheet light source lens group of the present invention.
具体实施方式Detailed ways
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本发明实施例的组件可以以各种不同的配置来布置和设计。因此，以下对在附图中提供的本发明的实施例的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施例。基于本发明的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only Some, but not all, embodiments of the invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
实施例Example
如图1所示，一种用于燃气轮机燃油喷嘴的光学测量装置，包括喷雾室9，所述喷雾室9的上端设置有待测喷嘴7，向喷雾室9内喷射设置，在喷雾室9内还设置有横向片光源镜头组3，位于待测喷嘴7的正下方，所述喷雾室9的上方设置有横向CCD摄像机5，当横向片光源镜头组3对待测喷嘴7喷射的油雾进行横向照射时，使其产生一环状油雾结构，并由横向CCD摄像机5拍摄该环状油雾结构设置，所述横向CCD摄像机5的输出端与处理系统10的输入端相连，所述喷雾室9的左侧或右侧上设置有纵向片光源镜头4，在喷雾室9的后端设置有纵向CCD摄像机6，与纵向片光源镜头4呈90°设置，当纵向片光源镜头4对待测喷嘴7喷射的油雾进行纵向照射时，产生一油雾锥形结构，由纵向CCD摄像机6拍摄该油雾锥形结构设置，所述纵向CCD摄像机6的输出端与处理系统10的输入端相连，所述激光发生器1通过光纤2与横向片光源镜头组3和纵向片光源镜头4相连，所述待测喷嘴7通过供油管8与供油装置相连通。通过处理系统10，对纵向CCD摄像机6和横向CCD摄像机5拍摄的图片导入电脑后，电脑通过其亮度判定准则得出油雾锥角和油雾径向分布；得到一个无人为因素判定的油雾锥角度和径向分布。从而实现对喷雾锥角和油雾径向均匀性进行定量测量，提高测量效率和测量精度，并实时保存图像数据，增加可追溯性。As shown in Figure 1, a kind of optical measurement device that is used for gas turbine fuel nozzle, comprises spray chamber 9, and the upper end of described spray chamber 9 is provided with to-be-measured nozzle 7, sprays and arranges in spray chamber 9, in spray chamber 9 Also be provided with transverse sheet light source lens group 3, be positioned at the directly below of nozzle 7 to be tested, the top of described spray chamber 9 is provided with horizontal CCD camera 5, when the oil mist sprayed by transverse sheet light source lens group 3 to be tested nozzle 7 carries out horizontal When irradiating, make it produce an annular oil mist structure, and take this annular oil mist structure setting by the horizontal CCD camera 5, the output end of the described horizontal CCD camera 5 is connected with the input end of the processing system 10, and the spray chamber The left side or the right side of 9 is provided with longitudinal sheet light source lens 4, is provided with longitudinal CCD camera 6 at the rear end of spray chamber 9, is 90 ° with longitudinal sheet light source lens 4 and is arranged, when vertical sheet light source lens 4 is to be tested nozzle 7. When the sprayed oil mist is irradiated longitudinally, an oil mist cone-shaped structure is produced, and the oil mist cone-shaped structure is photographed by the longitudinal CCD camera 6. The output end of the longitudinal CCD camera 6 is connected to the input end of the processing system 10, The laser generator 1 is connected with the transverse sheet light source lens group 3 and the vertical sheet light source lens 4 through the optical fiber 2 , and the nozzle 7 to be tested is connected with the oil supply device through the oil supply pipe 8 . Through the processing system 10, after the pictures taken by the vertical CCD camera 6 and the horizontal CCD camera 5 are imported into the computer, the computer obtains the oil mist cone angle and the radial distribution of the oil mist through its brightness judgment criterion; an oil mist judged by no human factors is obtained. Cone angle and radial distribution. In this way, the quantitative measurement of the spray cone angle and the radial uniformity of the oil mist can be realized, the measurement efficiency and accuracy can be improved, and the image data can be saved in real time to increase traceability.
上述本发明的喷雾室的背面设有纵向CCD摄像机6的取景窗，纵向CCD摄像机6通过取景窗进行拍照。The back side of the above-mentioned spray chamber of the present invention is provided with a viewfinder window of a longitudinal CCD camera 6, and the longitudinal CCD camera 6 takes pictures through the viewfinder window.
同样的，喷雾室的上方设置有横向CCD摄像机5的取景窗，横向CCD摄像机5通过取景窗进行拍照。Similarly, the top of the spray chamber is provided with a viewfinder window of the transverse CCD camera 5, and the transverse CCD camera 5 takes pictures through the viewfinder window.
实施例一Embodiment one
在上述实施例的基础上，本发明中所述横向片光源镜头组3和纵向片光源镜头4的照射光源为片光源激光，其片光源厚度在0.5～1.5mm。有效的消除了照射的油雾厚度大而造成的锥角出现偏差的问题。On the basis of the above-mentioned embodiments, the irradiation light source of the horizontal sheet light source lens group 3 and the vertical sheet light source lens 4 in the present invention is a sheet light source laser, and the thickness of the sheet light source is 0.5-1.5 mm. The problem of deviation of the cone angle caused by the large thickness of the irradiated oil mist is effectively eliminated.
上述的片光源的能量可调，以适应不同喷嘴的喷雾特点。The energy of the above-mentioned sheet light sources can be adjusted to adapt to the spray characteristics of different nozzles.
实施例二Embodiment two
在上述实施例的基础上，本发明所述喷雾室9内侧壁或下方设置有照明装置，所述喷雾室9为不透光的箱体结构，所述喷雾室9上设置有观察窗，其中，观察窗为可滑动的观察窗，便于操作人员直接观看。On the basis of the above-mentioned embodiments, an illuminating device is provided on or below the spray chamber 9 of the present invention, the spray chamber 9 is an opaque box structure, and an observation window is provided on the spray chamber 9, wherein , The observation window is a slidable observation window, which is convenient for the operator to directly observe.
实施例三Embodiment three
在上述实施例的基础上，如图2所示，所述横向片光源镜头组3由6-12个圆形的片光源镜头31构成，且构成间隔相等的圆形分布设置。On the basis of the above embodiments, as shown in FIG. 2 , the horizontal sheet light source lens group 3 is composed of 6-12 circular sheet light source lenses 31 arranged in a circular distribution with equal intervals.
实施例四Embodiment Four
在上述实施例、实施例一、实施例二和实施例三的基础上，所述喷雾室9的下方设置有回油管，与回收油箱相连通，，便于回收燃油，使其达到降低成本的目的。On the basis of the above-mentioned embodiment, embodiment 1, embodiment 2 and embodiment 3, an oil return pipe is arranged below the spray chamber 9, which communicates with the oil recovery tank, so as to facilitate the recovery of fuel oil and reduce the cost .
实施例五Embodiment five
在上述实施例、实施例一、实施例二和实施例三的基础上，所述喷雾室9内靠下方位置设置有粗细双层滤网，粗滤网网孔在10-200目之间，细滤网网孔在200-800目之间，所述粗细双层滤网位于回油管的输入口处。便于吸附油雾并过滤喷出的燃油。On the basis of the above-mentioned embodiment, embodiment 1, embodiment 2 and embodiment 3, a thick and fine double-layer filter screen is arranged at the lower position in the spray chamber 9, and the mesh of the coarse filter screen is between 10-200 mesh. The mesh of the fine filter screen is between 200-800 mesh, and the thick and fine double-layer filter screen is located at the input port of the oil return pipe. It is convenient to absorb oil mist and filter the sprayed fuel.
实施例六Embodiment six
在上述实施例、实施例一、实施例二和实施例三的基础上，所述喷雾室9的下方设置有通风口，有效低降低油雾碰壁后反弹向上对喷嘴测量造成干扰。On the basis of the above-mentioned embodiment, embodiment 1, embodiment 2 and embodiment 3, the lower part of the spray chamber 9 is provided with an air vent, which can effectively reduce the impact of the oil mist on the wall and rebound upwards to interfere with the measurement of the nozzle.
在上述的过程中，其纵向CCD摄像机6和横向CCD摄像机5拍摄时，整个喷雾室为黑箱结构，仅相应的片光源提供照明，以避免杂光降低测量精度。In the above-mentioned process, when the vertical CCD camera 6 and the horizontal CCD camera 5 are shooting, the entire spray chamber is a black box structure, and only the corresponding sheet light source provides illumination to avoid stray light from reducing the measurement accuracy.
对于油雾锥角测量，激光器产生的激光经过纵向片光源镜头转化为片光源照射油雾，油雾会吸收并反射激光，从而使得油雾浓度大的位置，激光反射强、亮度高，反之亦然。纵向CCD摄像机6拍照后将照片传入电脑，电脑分析后将图片划分为成总数量不超过100W的小的图像区域，根据不同区域的亮度得到一个明暗交接的分界线，改线即为油雾锥角，通过角度测量软件换算得到油雾锥角。For oil mist cone angle measurement, the laser generated by the laser is converted into a sheet light source to irradiate the oil mist through the longitudinal sheet light source lens, and the oil mist will absorb and reflect the laser light, so that the laser reflection is strong and the brightness is high at the position where the oil mist concentration is high, and vice versa Of course. The longitudinal CCD camera 6 takes pictures and transfers the pictures to the computer. After computer analysis, the pictures are divided into small image areas with a total number of no more than 100W. According to the brightness of different areas, a dividing line between light and dark is obtained. The changed line is the oil mist cone. Angle, the oil mist cone angle is obtained by converting the angle measurement software.
对于油雾径向均匀性测量，激光器产生的激光经过横向片光源镜头组转化6-12个横向片光源照射油雾环带，油雾环带产生6-12个反射区，根据油雾分布形成不同的亮度区域。试验开始前，使用一组标准油雾浓度试片对设备进行标定，得到换算公式y＝f(x)，其中x为反射亮度，y为油雾浓度。工作时，横向CCD摄像机5拍照后，将照片传入电脑，电脑分析后将图片按照横向片光源镜头组的角度，划分为12个区域，并将每个区域划分为不超过10W的小的图像区域。根据换算公式得到不同区域的相对油雾浓度，从而得到径向油雾均匀性。For the measurement of the radial uniformity of oil mist, the laser generated by the laser is transformed into 6-12 horizontal light sources through the lens group of the transverse light source to illuminate the oil mist ring belt, and the oil mist ring belt produces 6-12 reflection areas, which are formed according to the oil mist distribution different brightness regions. Before the test starts, use a set of standard oil mist concentration test pieces to calibrate the equipment, and get the conversion formula y=f(x), where x is the reflection brightness, and y is the oil mist concentration. During work, after the horizontal CCD camera 5 takes pictures, the photos are transferred to the computer, and after computer analysis, the pictures are divided into 12 areas according to the angle of the horizontal film light source lens group, and each area is divided into small images no more than 10W area. According to the conversion formula, the relative oil mist concentration in different areas is obtained, so as to obtain the radial oil mist uniformity.
上述的电脑的内分析是本领域技术人员已知的技术，在这不再做任何的赘述，同时相应的换算公式也是本领域技术人员已知的技术。The above-mentioned internal analysis of the computer is a technology known to those skilled in the art, and will not be repeated here, and the corresponding conversion formula is also a technology known to those skilled in the art.
本发明至少具有以下优点：The present invention has at least the following advantages:
1、本发明在CCD相机拍摄时为暗室，仅片光源提供油雾照明，保证光照亮度的一致性，避免杂光降低判定精度。1. The present invention is a dark room when shooting with a CCD camera, and only the sheet light source provides oil mist lighting to ensure the consistency of light brightness and avoid stray light from reducing the judgment accuracy.
2、本发明采用激光片光源照射油雾锥，片光源厚度在0.5～1.5mm之间，有效的消除了照射的油雾厚度大而造成的锥角出现偏差的问题。2. The present invention uses a laser sheet light source to irradiate the oil mist cone, and the thickness of the sheet light source is between 0.5 and 1.5 mm, which effectively eliminates the problem of deviation of the cone angle caused by the large thickness of the irradiated oil mist.
3、本发明采用6～12个横向片光源镜头照射油雾，保证了整个油雾环照射亮度的一致性，最大程度消除了因油雾吸收激光而造成激光亮度衰减导致测量精度降低问题。3. The present invention uses 6 to 12 horizontal light source lenses to irradiate the oil mist, which ensures the consistency of the illumination brightness of the entire oil mist ring, and eliminates the problem of reduced measurement accuracy caused by laser brightness attenuation caused by oil mist absorption of laser light to the greatest extent.
4、本发明采用CCD摄像机记录图像，并使用计算机进行自动判断，有效的消除了人为判定的不确定性，提高了油雾锥角和径向均匀性判定的一致性。4. The present invention uses a CCD camera to record images and uses a computer for automatic judgment, which effectively eliminates the uncertainty of human judgment and improves the consistency of oil mist cone angle and radial uniformity judgment.
5、本发明实现对喷雾锥角和油雾径向均匀性进行定量测量，提高测量效率和测量精度，并实时保存图像数据，增加可追溯性。5. The invention realizes the quantitative measurement of the spray cone angle and the radial uniformity of the oil mist, improves the measurement efficiency and accuracy, and saves the image data in real time to increase the traceability.
以上所述仅是本发明的优选实施方式，并不用于限制本发明，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变型，这些改进和变型也应视为本发明的保护范围。The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. It should be pointed out that for those of ordinary skill in the art, some improvements can be made without departing from the technical principle of the present invention. and modifications, these improvements and modifications should also be considered as the protection scope of the present invention.
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