CN110985256B - Constant volume elastic reflector end cover and porous oil sprayer spraying test system applying same - Google Patents
Constant volume elastic reflector end cover and porous oil sprayer spraying test system applying same Download PDFInfo
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- CN110985256B CN110985256B CN201911314474.2A CN201911314474A CN110985256B CN 110985256 B CN110985256 B CN 110985256B CN 201911314474 A CN201911314474 A CN 201911314474A CN 110985256 B CN110985256 B CN 110985256B
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- end cover
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
Abstract
The invention provides an end cover of a constant volume elastic reflector and a multi-hole oil sprayer spraying test system applying the end cover, and relates to the field of spraying form tests of diesel engine fuel systems. The testing system mainly comprises a high-intensity LED array light source, a slit, a plane mirror, a small convex lens, a large convex lens, a spectroscope, a constant volume bomb, a glass end cover, a constant volume bomb reflector end cover, a porous oil sprayer, a knife edge and a high-speed camera. The high-precision multi-hole oil sprayer spraying test system solves the problem that a plane mirror end cover in a traditional double-optical-path spraying flow field test system causes test light to pass through a flow field twice to cause serious distortion of a test result. The method improves the testing precision and the image definition of the porous spray by the double-optical-path high-speed schlieren method in principle, and has greater innovation and practical value.
Description
Technical Field
The invention relates to an end cover of a constant volume elastic reflector and a multi-hole oil sprayer spraying test system applying the end cover, and belongs to the technical field of diesel engine tests.
Background
The development of diesel engines for hundreds of years has greatly optimized and improved the structure and efficiency, and the diesel engine has important value in the world as the most widely used power system at present.
Along with the stability of the structure of the diesel engine, the improvement of the thermal efficiency of the diesel engine depends on the optimization and the improvement of a fuel injection system, and the spraying state, the atomizing state and the fuel-air mixing state directly influence the working condition of the diesel engine, so that the visual measurement of the spraying of the diesel engine is of great significance in evaluating the spraying state.
The traditional spray flow field measurement method mainly adopts a shadow method and a schlieren method, and the flow field is imaged and analyzed by adopting a single optical path to pass through a flow field area, but in the traditional method, in order to ensure that light rays in a single path pass through a test area, glass windows are required to be simultaneously installed on two end faces of a tested constant volume bomb, so that the manufacturing cost is increased, and the structural strength and the safety of the system are reduced.
Although the existing improved double-optical-path schlieren method can realize measurement of porous spraying, the test result is seriously distorted due to the fact that test light passes through a flow field twice in the test process, and the method has great limitation.
Disclosure of Invention
The invention aims to realize accurate measurement of porous spraying, and provides a constant volume elastic reflector end cover and a porous oil sprayer spraying test system applying the same, wherein the problem of serious distortion of a test result caused by that test light passes through a flow field twice in a traditional double-optical-path spraying flow field test system is solved by using a circular truncated cone curved mirror surface end cover with two buses arranged at 90 degrees.
The purpose of the invention is realized as follows:
the utility model provides a constant volume bullet speculum end cover, includes the end cover main part, set up the big round platform in the outside in the end cover main part, set up the little round platform in the inboard of the big round platform in the outside, inboard little round platform all are hollow structure, and inboard small circle platform top surface sets up to the sprayer mounting hole, the big circle of inboard small circle platform bottom surface and the big round platform top surface small circle in the outside coincide, inboard small circle platform surface constitutes small circle platform outside mirror surface, big round platform internal surface in the outside constitutes big round platform inboard mirror surface.
A spray test system for a porous oil sprayer comprises a high-intensity LED array light source, a slit, a first plane mirror, a small convex lens, a spectroscope, a constant volume bomb reflector end cover, a large convex lens, a second plane mirror, a knife edge and a high-speed camera, wherein light rays emitted by the high-intensity LED array light source are cut by the slit, then are sequentially reflected by the first plane mirror and converged by the small convex lens to form parallel light to be incident, the incident parallel light rays firstly pass through the spectroscope, 50% of the light rays are reflected and lost by the spectroscope, 50% of the light rays penetrate through the spectroscope and the quartz glass end cover of the constant volume bomb and then enter a flow field area of the constant volume bomb, the light rays entering the flow field area of the constant volume bomb are incident in parallel to the axis of the oil sprayer and then are incident to a mirror surface on the outer side of a small circular table of the reflector end, the light rays reach the inner side mirror surface of the large circular table of the transmitting mirror end cover, and then are reflected by the inner side mirror surface of the circular table to form return light rays, the return light rays are parallel to the axis of the oil sprayer and incident light rays, the direction is opposite to the incident direction, the constant volume bomb is emitted in a larger radius, the emitted parallel light rays pass through the quartz glass end cover of the constant volume bomb and then reach the spectroscope again, the return light rays are reflected to the large convex lens through the spectroscope, the light rays are converged to form a line at the focus of the large convex lens, the line is reflected by the plane mirror and then enters the high-speed camera for imaging after being cut by the knife edge, and the light rays are.
Compared with the prior art, the invention has the beneficial effects that: the high-precision multi-hole oil sprayer spraying test system solves the problem that the test result is seriously distorted because test light passes through the flow field twice in the traditional double-optical-path spraying flow field test system. The method improves the testing precision and the image definition of the porous spraying in principle, and has greater innovation and practical value.
Drawings
FIG. 1 is a schematic diagram of a high-precision multi-orifice injector spray test system.
FIG. 2 is a structural diagram of a reflector end cover of a high-precision multi-hole fuel injector spray test system.
Fig. 3 is a side view of fig. 2.
In the figure: 1-high-intensity LED array, 2-first plane mirror, 3-small convex lens, 1, 4-spectroscope, 5-constant volume bomb, 6-curved mirror end cover (a-small circular table outer side curved mirror, b large circular table inner side curved mirror), 7-porous oil injector, 9-large convex lens, 10-second plane mirror, 11-knife edge, 12-high speed camera; 13-end cover main body, 14-oil injector mounting hole, 15-small circular table outside mirror surface, 16-large circular table bottom surface large circle, 17-large circular table bottom surface large circle and large circular table top surface small circle are superposed, 18-large circular table inside mirror surface, 19-small circular table top surface small circle, 20-slit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
With reference to fig. 1 to 3, the end cap of the present invention is used in a dual-optical path multi-hole spray flow field test system composed of a high-intensity LED array light source 1, a slit 20, a first plane mirror 2, a second plane mirror 10, a small convex lens 3, a large convex lens 9, a spectroscope 4, a constant volume bomb 5, a (reflector) end cap body 13, a curved mirror end cap 6 (a-a small circular table outer side curved mirror, b large circular table inner side curved mirror), a multi-hole oil sprayer 7, a knife edge 11, a high-speed camera 12, etc. The end cover of the reflector comprises an end cover main body 13, an outer side large round platform arranged in the end cover main body and an inner side small round platform arranged in the outer side large round platform, wherein the outer side large round platform and the inner side small round platform are both of hollow structures, a small round 19 on the top surface of the inner side small round platform is arranged as an installation hole 14 of the fuel injector 7, a large round 17 on the bottom surface of the inner side small round platform and a small round on the top surface of the outer side large round platform are superposed, the outer surface of the inner side small round platform forms a small round platform outer side mirror surface 15, the inner surface of the outer side large round platform forms a large round platform inner side mirror surface 18, and the.
The end cover of the constant volume elastic reflector comprises an inner small round table and an outer large round table, wherein the inner parts of the large round table and the small round table are hollow, the small round table is placed in the large round table, the diameter of the upper bottom surface of the small round table is equal to the diameter of the front end of an oil sprayer and used for inserting the oil sprayer, the diameter of the lower bottom surface of the small round table is equal to the diameter of the upper bottom surface of the large round table, the lower bottom surface of the small round table is tightly contacted and matched with the upper bottom surface of the large round table, the outer side surface of the small round table and the inner side surface of the large round table are intersected at a contact matching circle, the included angle between the outer side bus of the small round table and the axis of the oil sprayer is 45 degrees, the included angle between the inner side bus of the large round table and the axis of the oil sprayer is 135 degrees, the included angle between the outer side bus of the small round table and the inner side bus of the large. The porous oil injector passes through the big circle on the bottom surface of the small round table at the inner side and is arranged on the end cover of the reflector. The axis of the oil sprayer, the axis of the large circular table, the axis of the small circular table, the central line of the incident parallel light and the central line of the emergent parallel light are positioned on the same straight line. The diameter of the constant volume bomb is larger than the penetration distance of the spraying along the radial component, so that the oil mist is prevented from colliding with the wall, and the oil mist is prevented from shielding the reflected emergent light.
Light emitted by the high-intensity LED array is cut by the slit and then becomes a linear light source, the sum of the distance from the center of the slit to the center of the plane mirror and the distance from the center of the plane mirror to the center of the small convex lens is equal to the focal length of the small convex lens, the light is diffused and emitted after passing through the slit and is converged by the small convex lens to form parallel light to be incident, the incident parallel light firstly passes through the spectroscope, 50% of the light is reflected and lost by the spectroscope, and 50% of the light penetrates through the spectroscope and the constant volume elastic quartz glass end cover and then enters a flow field area of the constant volume.
Incident parallel light is parallel to the axis of the oil sprayer, penetrates through the quartz glass end cover with a smaller radius and is incident on the small round table outer side curved mirror of the reflector end cover, light rays travel perpendicular to the axis of the oil sprayer along the direction of increasing of the constant volume bullet radius after being reflected by the small round table outer side curved mirror, the light rays are reflected by the round table inner side curved mirror to form return light rays after reaching the large round table inner side curved mirror of the reflector end cover, the return light rays are parallel to the axis of the oil sprayer and the incident light rays, the direction is opposite to the incident direction, the constant volume bullet is emitted with a larger radius, and the return light rays cannot pass through a spraying flow field.
The emergent parallel light rays pass through the quartz glass end cover and then reach the spectroscope again, are reflected to the large convex lens with larger diameter through the spectroscope, are converged by the large convex lens and then are reflected by the plane mirror to change the light path, and the light rays are converged into a line at the focus of the large convex lens, are reflected by the plane mirror two first, are cut by the knife edge and then enter the high-speed CCD for imaging.
When the oil sprayer starts to spray oil, disturbance occurs in the flow field, the density of different positions in the flow field changes, incident parallel light rays are partially refracted, the refracted light rays cannot be converged to the original focus through the large convex lens, and therefore the refracted light rays can be blocked by the knife edge, the area where the deflected light rays are located can generate a darker area in the camera, and the form change of a spray image along with time is obtained.
When the oil injector does not inject oil and flow fields have no disturbance, parallel light enters in a small radius range, is reflected twice by a plane mirror end cover and then is emitted in parallel along a large radius range, the emitted parallel light passes through a quartz glass end cover and then reaches a spectroscope, is reflected by the spectroscope to a large convex lens with a larger diameter, is converged by the large convex lens and then is reflected by the plane mirror to change a light path, and light rays at the focus of the large convex lens are converged into a line and enter a high-speed CCD (charge coupled device) for imaging after being cut by a knife edge. When the oil sprayer starts to spray oil, disturbance occurs in the flow field, the density of different positions in the flow field changes, incident parallel light rays are partially refracted, the refracted light rays cannot be converged to the original focus through the large convex lens, and therefore the refracted light rays can be blocked by the knife edge, the area where the deflected light rays are located can generate a darker area in the camera, and the form change of a spray image along with time is obtained.
In conclusion, the invention discloses a high-precision multi-hole oil sprayer spraying test system, and relates to the field of diesel engine fuel oil system spraying form tests. The testing system mainly comprises a high-intensity LED array light source, a slit, a plane mirror, a small convex lens, a large convex lens, a spectroscope, a constant volume bomb, a glass end cover, a constant volume bomb reflector end cover, a porous oil sprayer, a knife edge and a high-speed camera. The high-precision multi-hole oil sprayer spraying test system solves the problem that a plane mirror end cover in a traditional double-optical-path spraying flow field test system causes test light to pass through a flow field twice to cause serious distortion of a test result. The method improves the testing precision and the image definition of the porous spray by the double-optical-path high-speed schlieren method in principle, and has greater innovation and practical value.
Claims (1)
1. A porous sprayer spraying test system is characterized in that: the constant volume elastic reflector end cover comprises an end cover main body, an outer large round platform and an inner small round platform, wherein the outer large round platform and the inner small round platform are both of hollow structures, the top surface of an inner small round platform is provided with an oil sprayer mounting hole, a large circle on the bottom surface of the inner small round platform and a small circle on the top surface of the outer large round platform coincide, the outer surface of the inner small round platform forms a small round platform outer side mirror surface, and the inner surface of the outer large round platform forms a large round platform inner side mirror surface; light emitted by the high-intensity LED array light source is cut by the slit, then reflected by the plane mirror and converged by the small convex lens to be incident in parallel, 50% of the incident parallel light firstly passes through the spectroscope, is reflected and lost by the spectroscope, 50% of the light penetrates through the spectroscope and the quartz glass end cover of the constant volume bomb and then enters the flow field area of the constant volume bomb, the parallel light entering the flow field area of the constant volume bomb is incident in parallel to the axis of the oil injector and is incident on the outer side mirror surface of the small circular table of the end cover of the constant volume bomb, the light is reflected by the outer side mirror surface of the small circular table and then travels in the direction of increasing the radius of the constant volume bomb perpendicular to the axis of the oil injector, the light reaches the inner side mirror surface of the large circular table of the end cover of the constant volume bomb and then is reflected by the inner side mirror surface of the circular table to form return light, the return light is parallel to, emergent parallel light rays pass through a quartz glass end cover of the constant volume bomb and then reach the spectroscope again, are reflected to the large convex lens through the spectroscope, are converged by the large convex lens and then are reflected by the plane mirror to change a light path, and the light rays are converged into a line at the focus of the large convex lens, are reflected by the plane mirror twice, are cut by the knife edge and then enter the high-speed camera for imaging.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111636989B (en) * | 2020-04-29 | 2021-06-25 | 北京理工大学 | Measuring device for ignition and combustion lag period of jet spray at high and low temperatures |
| CN114810445B (en) * | 2022-04-11 | 2022-11-11 | 哈尔滨工程大学 | Controllable spraying oil beam fluid director device based on porous oil sprayer |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050036A (en) * | 1976-02-25 | 1977-09-20 | Textron Inc. | Optical system for lasers |
| JPS5447016A (en) * | 1977-09-22 | 1979-04-13 | Hino Motors Ltd | Device for photographing interior of combustion chamber of internal combustion engine |
| US5099492A (en) * | 1989-03-28 | 1992-03-24 | Optomic Technologies Corporation, Ltd. | Laser system |
| JPH07218236A (en) * | 1994-02-08 | 1995-08-18 | Isuzu Motors Ltd | Volume measuring apparatus for liquid spray |
| JPH10148599A (en) * | 1996-11-20 | 1998-06-02 | Aisan Ind Co Ltd | Method for inspecting injection state of injector |
| JP2001033216A (en) * | 1999-07-22 | 2001-02-09 | Denso Corp | Image measuring device and image measuring method |
| CN1554033A (en) * | 2002-07-11 | 2004-12-08 | ������������ʽ���� | Illumination optical device in image display device and image display device |
| CN1819374A (en) * | 2006-03-15 | 2006-08-16 | 华中科技大学 | High-power laser resonance cavity |
| CN1929217A (en) * | 2006-09-22 | 2007-03-14 | 华中科技大学 | High power pulsed laser maladjustment proof resonant cavity |
| CN1996683A (en) * | 2006-12-28 | 2007-07-11 | 华中科技大学 | Laser resonance cavity of the combined full reflection mirror with the right-angle interval and external taper |
| CN103698274A (en) * | 2013-12-23 | 2014-04-02 | 上海交通大学 | Multifunctional constant-volume bomb for testing spraying, burning and soot generation characteristics |
| CN204925500U (en) * | 2014-07-29 | 2015-12-30 | 谢赟燕 | Confocal optical scanner |
| CN105840382A (en) * | 2016-04-06 | 2016-08-10 | 北京理工大学 | Evaluating method and measuring device for uniformity of spray holes of oil sprayer |
| CN105866970A (en) * | 2016-05-27 | 2016-08-17 | 武汉理工大学 | Reflective type high-speed camera shooting schlieren system applied to constant volume combustion bomb and capable of correcting chromatic aberration |
| CN105909444A (en) * | 2016-05-09 | 2016-08-31 | 江苏科技大学 | Marine diesel engine spray field measuring system and method based on three-dimensional PIV |
| CN106404410A (en) * | 2016-12-02 | 2017-02-15 | 江苏大学 | Apparatus capable of simultaneously measuring diesel spray structure and combustion characteristic and method thereof |
| CN106932398A (en) * | 2017-03-13 | 2017-07-07 | 哈尔滨工程大学 | A kind of shadowgraph imaging system for the spraying measurement of many spray orifices |
| CN106932527A (en) * | 2017-04-01 | 2017-07-07 | 浙江大学 | A kind of liquid fuel spray diffusion combustion characteristic research system |
| CN107727401A (en) * | 2017-10-18 | 2018-02-23 | 中北大学 | A kind of opposed-piston engine interferes spray test device |
| CN107782463A (en) * | 2017-12-01 | 2018-03-09 | 上海交通大学 | The device and method of synchro measure flame forms and temperature |
| CN109001863A (en) * | 2018-09-07 | 2018-12-14 | 广东国志激光技术有限公司 | A kind of devices and methods therefor of ring-shaped light spot welding optic fibre end cap |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10331228B3 (en) * | 2003-07-10 | 2005-01-27 | Pierburg Instruments Gmbh | Device for measuring time-resolved volumetric flow processes |
| CN101943097B (en) * | 2010-09-03 | 2011-11-16 | 北京航空航天大学 | Atomizing test constant-volume elastomer |
| WO2012147158A1 (en) * | 2011-04-26 | 2012-11-01 | トヨタ自動車株式会社 | Spray measurement method and spray test device used in said method |
| CN103883453B (en) * | 2014-03-19 | 2016-05-25 | 江苏大学 | A kind of Quick air corrosion test device and test method thereof of diesel engine jet rose |
| CN107061095B (en) * | 2017-06-01 | 2019-05-21 | 哈尔滨工程大学 | A kind of combined type fuel injector fuel injection characteristic measuring device and measuring method |
| DE102017222234A1 (en) * | 2017-12-08 | 2019-06-13 | Robert Bosch Gmbh | Method and device for characterizing the injection behavior of an injection valve for liquids |
-
2019
- 2019-12-19 CN CN201911314474.2A patent/CN110985256B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050036A (en) * | 1976-02-25 | 1977-09-20 | Textron Inc. | Optical system for lasers |
| JPS5447016A (en) * | 1977-09-22 | 1979-04-13 | Hino Motors Ltd | Device for photographing interior of combustion chamber of internal combustion engine |
| US5099492A (en) * | 1989-03-28 | 1992-03-24 | Optomic Technologies Corporation, Ltd. | Laser system |
| JPH07218236A (en) * | 1994-02-08 | 1995-08-18 | Isuzu Motors Ltd | Volume measuring apparatus for liquid spray |
| JPH10148599A (en) * | 1996-11-20 | 1998-06-02 | Aisan Ind Co Ltd | Method for inspecting injection state of injector |
| JP2001033216A (en) * | 1999-07-22 | 2001-02-09 | Denso Corp | Image measuring device and image measuring method |
| CN1554033A (en) * | 2002-07-11 | 2004-12-08 | ������������ʽ���� | Illumination optical device in image display device and image display device |
| CN1819374A (en) * | 2006-03-15 | 2006-08-16 | 华中科技大学 | High-power laser resonance cavity |
| CN1929217A (en) * | 2006-09-22 | 2007-03-14 | 华中科技大学 | High power pulsed laser maladjustment proof resonant cavity |
| CN1996683A (en) * | 2006-12-28 | 2007-07-11 | 华中科技大学 | Laser resonance cavity of the combined full reflection mirror with the right-angle interval and external taper |
| CN103698274A (en) * | 2013-12-23 | 2014-04-02 | 上海交通大学 | Multifunctional constant-volume bomb for testing spraying, burning and soot generation characteristics |
| CN204925500U (en) * | 2014-07-29 | 2015-12-30 | 谢赟燕 | Confocal optical scanner |
| CN105840382A (en) * | 2016-04-06 | 2016-08-10 | 北京理工大学 | Evaluating method and measuring device for uniformity of spray holes of oil sprayer |
| CN105909444A (en) * | 2016-05-09 | 2016-08-31 | 江苏科技大学 | Marine diesel engine spray field measuring system and method based on three-dimensional PIV |
| CN105866970A (en) * | 2016-05-27 | 2016-08-17 | 武汉理工大学 | Reflective type high-speed camera shooting schlieren system applied to constant volume combustion bomb and capable of correcting chromatic aberration |
| CN106404410A (en) * | 2016-12-02 | 2017-02-15 | 江苏大学 | Apparatus capable of simultaneously measuring diesel spray structure and combustion characteristic and method thereof |
| CN106932398A (en) * | 2017-03-13 | 2017-07-07 | 哈尔滨工程大学 | A kind of shadowgraph imaging system for the spraying measurement of many spray orifices |
| CN106932527A (en) * | 2017-04-01 | 2017-07-07 | 浙江大学 | A kind of liquid fuel spray diffusion combustion characteristic research system |
| CN107727401A (en) * | 2017-10-18 | 2018-02-23 | 中北大学 | A kind of opposed-piston engine interferes spray test device |
| CN107782463A (en) * | 2017-12-01 | 2018-03-09 | 上海交通大学 | The device and method of synchro measure flame forms and temperature |
| CN109001863A (en) * | 2018-09-07 | 2018-12-14 | 广东国志激光技术有限公司 | A kind of devices and methods therefor of ring-shaped light spot welding optic fibre end cap |
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