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 PDF

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Publication number
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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CN
China
Prior art keywords
spray chamber
oil
light source
mist
gas turbine
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Pending
Application number
CN201910769194.4A
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Chinese (zh)
Inventor
刘六九
李正伟
孙杰
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Loulan Technology (suzhou) Co Ltd
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Loulan Technology (suzhou) Co Ltd
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Priority to CN201910769194.4A priority Critical patent/CN110361185A/en
Publication of CN110361185A publication Critical patent/CN110361185A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/26Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The present invention relates to a kind of optical measuring devices for gas turbine fuel nozzle, including spray chamber, the upper end of spray chamber is provided with nozzle to be measured, it is sprayed into spray chamber, transversal flaps light source lens group is additionally provided in spray chamber, positioned at the underface of nozzle to be measured, lateral CCD camera is provided with above spray chamber, the output end of lateral CCD camera is connected with the input terminal of processing system, the left or right side of spray chamber is provided with longitudinal slice light source camera lens, rear side is provided with longitudinal CCD camera, the working end of the two is in 90 ° of settings, the output end of longitudinal CCD camera is connected with the input terminal of processing system, the laser generator is connected by optical fiber with transversal flaps light source lens group and longitudinal slice light source camera lens.The present invention, which is realized, carries out quantitative measurment to spray cone angle and mist of oil radial uniformity, improves measurement efficiency and measurement accuracy, and save image data in real time, increases trackability.

Description

A kind of optical measuring device for gas turbine fuel nozzle
Technical field
The invention belongs to gas-turbine combustion chambers to test field, be related to a kind of optics survey for gas turbine fuel nozzle Measure device.
Background technique
In the manufacture of gas turbine fuel nozzle and maintenance process, need to carry out nozzle angle measurement to fuel nozzle.
Currently, the method that mechanical scale-type is usually taken for mist of oil angle measurement domestic manufacturer measures, judgement It is all carried out by the experience of field adjustable worker, is only capable of accomplishing observational measurement that and the degree of automation is low without method quantitative measurement, Image document can not be saved, trackability is poor.For mist of oil radial uniformity measurement generally use artificial 12 etc. points of weight methods into Row measurement, measurement process low efficiency, error are big, trackability is poor.
In view of the above shortcomings, the designer, is actively subject to research and innovation, to found, one kind is new structural to be used for Spray cone angle and mist of oil radial distribution measurement, make its efficiency and accuracy it is higher, with more the utility value in industry.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of optics surveys for gas turbine fuel nozzle Measure device.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of optical measuring device for gas turbine fuel nozzle, including spray chamber, the upper end of the spray chamber are set It is equipped with nozzle to be measured, is sprayed into spray chamber, transversal flaps light source lens group is additionally provided in spray chamber, positioned at nozzle to be measured Underface is provided with lateral CCD camera above the spray chamber, sprays when transversal flaps light source lens group nozzle to be measured When mist of oil carries out laterally irradiation, it is set to generate a cyclic annular mist of oil structure, and shoot the ring-type mist of oil structure by lateral CCD camera The output end of setting, the transverse direction CCD camera is connected with the input terminal of processing system, and the left or right side of the spray chamber is set It is equipped with longitudinal slice light source camera lens, rear side is provided with longitudinal CCD camera, and the working end of the two is in 90 ° of settings, when longitudinal sheet laser When camera lens carries out longitudinal irradiation to the mist of oil that nozzle to be measured sprays, a mist of oil pyramidal structure is generated, is shot by longitudinal CCD camera The output end of the mist of oil taper structure setting, the longitudinal direction CCD camera is connected with the input terminal of processing system, the laser hair Raw device is connected by optical fiber with transversal flaps light source lens group and longitudinal slice light source camera lens.
Preferably, the radiation source of the transversal flaps light source lens group and longitudinal slice light source camera lens is sheet laser laser, Sheet laser thickness is in 0.5~1.5mm.
Preferably, the spray chamber is lighttight body structure, is provided with observation window in the spray chamber.
Preferably, the transversal flaps light source lens group is made of 6-12 circular sheet laser camera lenses, and constitutes interval phase Deng circular distribution setting.
Preferably, it is provided with oil return pipe below the spray chamber, be connected with recycling fuel tank.
Preferably, position is provided with thickness double-layer leaching net on the lower in the spray chamber, and coarse strainer mesh is in 10-200 mesh Between, between 200-800 mesh, the thickness double-layer leaching net is located at the input port of oil return pipe fie screen mesh.
Preferably, the nozzle to be measured is connected by fuel feed pump with fueller.
Preferably, spray chamber's inner sidewall or lower section are provided with lighting device.
Preferably, ventilation opening is provided with below the spray chamber.
Preferably, the processing system is computer or single-chip microcontroller.
According to the above aspect of the present invention, the present invention has at least the following advantages:
1, the present invention is darkroom in CCD camera shooting, and only sheet laser provides mist of oil illumination, guarantees the consistent of illumination brightness Property, avoid veiling glare from reducing judgement precision.
2, the present invention irradiates oil cone using laser light sheet, and sheet laser thickness effectively disappears between 0.5~1.5mm In addition to the mist of oil thickness of irradiation it is big and caused by cone angle there is the problem of deviation.
3, the present invention irradiates mist of oil using 6~12 transversal flaps light source camera lenses, ensure that entire mist of oil ring irradiation brightness Consistency utmostly eliminates and causes laser brightness decaying that measurement accuracy is caused to reduce problem because mist of oil absorbs laser.
4, the present invention records image using CCD camera, and is judged automatically using computer, and people has been effectively eliminated For the uncertainty of judgement, the consistency of mist of oil cone angle and radially uniform sex determination is improved.
5, the present invention, which is realized, carries out quantitative measurment to spray cone angle and mist of oil radial uniformity, improves measurement efficiency and measurement Precision, and image data is saved in real time, increase trackability.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention, And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this A little attached drawings obtain other relevant attached drawings.
Fig. 1 is structural schematic diagram of the invention;
Fig. 2 is the structural schematic diagram of transversal flaps light source lens group of the invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below Example is not intended to limit the scope of the invention for illustrating the present invention.
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction with attached in the embodiment of the present invention Figure, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only this Invention a part of the embodiment, instead of all the embodiments.Embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings Component can arrange and design with a variety of different configurations.Therefore, the implementation of the invention to providing in the accompanying drawings below The detailed description of example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention Example.Based on the embodiment of the present invention, those skilled in the art are obtained all without making creative work Other embodiments shall fall within the protection scope of the present invention.
Embodiment
As shown in Figure 1, a kind of optical measuring device for gas turbine fuel nozzle, including spray chamber 9, it is described spraying The upper end of room 9 is provided with nozzle 7 to be measured, and setting is sprayed into spray chamber 9, transversal flaps luminous source mirror is additionally provided in spray chamber 9 Head group 3, positioned at the underface of nozzle 7 to be measured, the top of the spray chamber 9 is provided with lateral CCD camera 5, when transversal flaps light When source lens group 3 carries out laterally irradiation to the mist of oil that nozzle 7 to be measured sprays, it is set to generate a cyclic annular mist of oil structure, and by transverse direction CCD camera 5 shoots the ring-type mist of oil structure setting, the output end of the transverse direction CCD camera 5 and the input of processing system 10 End is connected, and longitudinal slice light source camera lens 4 is provided on the left or right side of the spray chamber 9, is provided in the rear end of spray chamber 9 vertical To CCD camera 6, with longitudinal slice light source camera lens 4 in 90 ° of settings, when the oil that longitudinal slice light source camera lens 4 sprays nozzle 7 to be measured When mist carries out longitudinal irradiation, a mist of oil pyramidal structure is generated, the mist of oil taper structure setting, institute are shot by longitudinal CCD camera 6 The output end for stating longitudinal CCD camera 6 is connected with the input terminal of processing system 10, and the laser generator 1 passes through optical fiber 2 and cross It is connected to sheet laser lens group 3 with longitudinal slice light source camera lens 4, the nozzle 7 to be measured is connected by fuel feed pump 8 with fueller It is logical.Pass through processing system 10, after importing computer to the picture that longitudinal CCD camera 6 and lateral CCD camera 5 are shot, computer expert It crosses its brightness decision criteria and obtains mist of oil cone angle and mist of oil radial distribution;Obtain the mist of oil coning angle determined without human factor And radial distribution.Quantitative measurment is carried out to spray cone angle and mist of oil radial uniformity to realize, improves measurement efficiency and measurement Precision, and image data is saved in real time, increase trackability.
The back side of the spray chamber of aforementioned present invention is equipped with the viewfinder of longitudinal CCD camera 6, and longitudinal CCD camera 6 passes through Viewfinder is taken pictures.
Likewise, being provided with the viewfinder of lateral CCD camera 5 above spray chamber, lateral CCD camera 5 is by taking Scape window is taken pictures.
Embodiment one
On the basis of the above embodiments, heretofore described transversal flaps light source lens group 3 and longitudinal slice light source camera lens 4 Radiation source is sheet laser laser, and sheet laser thickness is in 0.5~1.5mm.The mist of oil thickness for having effectively eliminated irradiation it is big and Caused by cone angle there is the problem of deviation.
The energy of above-mentioned sheet laser is adjustable, to adapt to the spray characteristic of different spray nozzles.
Embodiment two
On the basis of the above embodiments, 9 inner sidewall of spray chamber of the present invention or lower section are provided with lighting device, described Spray chamber 9 is lighttight body structure, is provided with observation window in the spray chamber 9, wherein observation window is slidable observation Window is convenient for operator's direct viewing.
Embodiment three
On the basis of the above embodiments, as shown in Fig. 2, the transversal flaps light source lens group 3 is by 6-12 circular Light source camera lens 31 is constituted, and is constituted and be spaced equal circular distribution setting.
Example IV
On the basis of above-described embodiment, embodiment one, embodiment two and embodiment three, the lower section of the spray chamber 9 is set It is equipped with oil return pipe, is connected with recycling fuel tank, convenient for recycling fuel oil, reach the purpose for reducing cost.
Embodiment five
On the basis of above-described embodiment, embodiment one, embodiment two and embodiment three, in the spray chamber 9 on the lower Position is provided with thickness double-layer leaching net, and coarse strainer mesh is between 10-200 mesh, and fie screen mesh is between 200-800 mesh, institute Thickness double-layer leaching net is stated to be located at the input port of oil return pipe.Convenient for adsorbing mist of oil and filtering the fuel oil of ejection.
Embodiment six
On the basis of above-described embodiment, embodiment one, embodiment two and embodiment three, the lower section of the spray chamber 9 is set It is equipped with ventilation opening, the low mist of oil of effective sinking rebounds after being rebuffed and interferes upwards to nozzle measurement.
During above-mentioned, when longitudinal CCD camera 6 and lateral CCD camera 5 are shot, entire spray chamber is black Box structure, only corresponding sheet laser provides illumination, reduces measurement accuracy to avoid veiling glare.
For mist of oil cone angle measuring, the laser that laser generates is converted into sheet laser irradiation oil by longitudinal slice light source camera lens Mist, mist of oil can absorb and reflection laser, so that the position that oil mist concentration is big, laser reflection is strong, brightness is high, and vice versa. Photo is passed to computer after taking pictures by longitudinal CCD camera 6, and picture is divided into total quantity no more than 100W's after computer for analysis Small image-region obtains the line of demarcation of light and shade handover according to the brightness of different zones, relocates as mist of oil cone angle, pass through Angle measurement software converts to obtain mist of oil cone angle.
Mist of oil radial uniformity is measured, the laser that laser generates is by transversal flaps light source lens group conversion 6-12 Lateral sheet laser irradiates mist of oil annulus, and mist of oil annulus generates 6-12 echo area, is distributed to form different brightness regions according to mist of oil Domain.Before on-test, equipment is demarcated using one group of standard oil mist concentration test piece, obtains reduction formula y=f (x), wherein X is reflecting brightness, and y is oil mist concentration.When work, after lateral CCD camera 5 is taken pictures, photo is passed to computer, after computer for analysis By picture according to the angle of transversal flaps light source lens group, 12 regions are divided into, and are no more than 10W's by each region division Small image-region.The opposite oil mist concentration of different zones is obtained according to reduction formula, to obtain radial mist of oil uniformity.
The interior analysis of above-mentioned computer is known to the skilled in the art technology, this no longer do it is any repeat, together When corresponding reduction formula be also known to the skilled in the art technology.
The present invention has at least the following advantages:
1, the present invention is darkroom in CCD camera shooting, and only sheet laser provides mist of oil illumination, guarantees the consistent of illumination brightness Property, avoid veiling glare from reducing judgement precision.
2, the present invention irradiates oil cone using laser light sheet, and sheet laser thickness effectively disappears between 0.5~1.5mm In addition to the mist of oil thickness of irradiation it is big and caused by cone angle there is the problem of deviation.
3, the present invention irradiates mist of oil using 6~12 transversal flaps light source camera lenses, ensure that entire mist of oil ring irradiation brightness Consistency utmostly eliminates and causes laser brightness decaying that measurement accuracy is caused to reduce problem because mist of oil absorbs laser.
4, the present invention records image using CCD camera, and is judged automatically using computer, and people has been effectively eliminated For the uncertainty of judgement, the consistency of mist of oil cone angle and radially uniform sex determination is improved.
5, the present invention, which is realized, carries out quantitative measurment to spray cone angle and mist of oil radial uniformity, improves measurement efficiency and measurement Precision, and image data is saved in real time, increase trackability.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and Modification, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of optical measuring device for gas turbine fuel nozzle, it is characterised in that: including spray chamber (9), the spray The upper end of fog chamber (9) is provided with nozzle to be measured (7), and the injection setting into spray chamber (9) is additionally provided with cross in spray chamber (9) To sheet laser lens group (3), it is located at the underface of nozzle to be measured (7), is provided with lateral CCD above the spray chamber (9) and takes the photograph Camera (5) makes it generate one when transversal flaps light source lens group (3) carries out laterally irradiation to the mist of oil that nozzle to be measured (7) sprays Cyclic annular mist of oil structure, and the ring-type mist of oil structure setting, the transverse direction CCD camera (5) are shot by lateral CCD camera (5) Output end be connected with the input terminal of processing system (10), be provided with longitudinal slice light on the left or right side of the spray chamber (9) Source camera lens (4) is provided with longitudinal CCD camera (6) in the rear end of spray chamber (9), sets with longitudinal slice light source camera lens (4) in 90 ° It sets, when longitudinal slice light source camera lens (4) carries out longitudinal irradiation to the mist of oil that nozzle to be measured (7) sprays, generates a mist of oil taper knot Structure shoots the mist of oil taper structure setting, the output end of the longitudinal direction CCD camera (6) and place by longitudinal CCD camera (6) The input terminal of reason system (10) is connected, and the laser generator (1) is by optical fiber (2) and transversal flaps light source lens group (3) and indulges It is connected to sheet laser camera lens (4).
2. a kind of optical measuring device for gas turbine fuel nozzle according to claim 1, it is characterised in that: institute The radiation source for stating transversal flaps light source lens group (3) and longitudinal slice light source camera lens (4) is sheet laser laser, and sheet laser thickness exists 0.5~1.5mm.
3. a kind of optical measuring device for gas turbine fuel nozzle according to claim 1, it is characterised in that: institute Stating spray chamber (9) is lighttight body structure, is provided with observation window on the spray chamber (9).
4. a kind of optical measuring device for gas turbine fuel nozzle according to claim 1, it is characterised in that: institute It states transversal flaps light source lens group (3) to be made of 6-12 circular sheet laser camera lenses (31), and constitutes and be spaced equal circle point Cloth setting.
5. a kind of optical measuring device for gas turbine fuel nozzle according to claim 3, it is characterised in that: institute It states and is provided with oil return pipe below spray chamber (9), be connected with recycling fuel tank.
6. a kind of optical measuring device for gas turbine fuel nozzle according to claim 3, it is characterised in that: institute It states the position in spray chamber (9) on the lower and is provided with thickness double-layer leaching net, coarse strainer mesh is between 10-200 mesh, fie screen net Between 200-800 mesh, the thickness double-layer leaching net is located at the input port of oil return pipe in hole.
7. a kind of optical measuring device for gas turbine fuel nozzle according to claim 1, it is characterised in that: institute It states nozzle to be measured (7) and is connected by fuel feed pump (8) with fueller.
8. a kind of optical measuring device for gas turbine fuel nozzle according to claim 3, it is characterised in that: institute It states spray chamber's (9) inner sidewall or lower section is provided with lighting device.
9. a kind of optical measuring device for gas turbine fuel nozzle according to claim 3, it is characterised in that: institute It states and is provided with ventilation opening below spray chamber (9).
10. a kind of optical measuring device for gas turbine fuel nozzle according to claim 3, it is characterised in that: The processing system (10) is computer.
CN201910769194.4A 2019-08-20 2019-08-20 A kind of optical measuring device for gas turbine fuel nozzle Pending CN110361185A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110595761A (en) * 2019-10-29 2019-12-20 楼蓝科技(苏州)有限公司 Test system for fuel nozzle performance test
CN110595760A (en) * 2019-10-27 2019-12-20 楼蓝科技(苏州)有限公司 Test bed system suitable for measuring fuel nozzle main pipe of combustion chamber of gas turbine
CN113565662A (en) * 2020-04-28 2021-10-29 广州汽车集团股份有限公司 Device and method for measuring wall collision amount of engine fuel injector spray

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110595760A (en) * 2019-10-27 2019-12-20 楼蓝科技(苏州)有限公司 Test bed system suitable for measuring fuel nozzle main pipe of combustion chamber of gas turbine
CN110595761A (en) * 2019-10-29 2019-12-20 楼蓝科技(苏州)有限公司 Test system for fuel nozzle performance test
CN110595761B (en) * 2019-10-29 2024-02-13 楼蓝科技(江苏)有限公司 Test system for performance test of fuel nozzle
CN113565662A (en) * 2020-04-28 2021-10-29 广州汽车集团股份有限公司 Device and method for measuring wall collision amount of engine fuel injector spray

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