CN105569899A - Spray shield applicable to nozzle atomization performance PDA experiment - Google Patents
Spray shield applicable to nozzle atomization performance PDA experiment Download PDFInfo
- Publication number
- CN105569899A CN105569899A CN201610056574.XA CN201610056574A CN105569899A CN 105569899 A CN105569899 A CN 105569899A CN 201610056574 A CN201610056574 A CN 201610056574A CN 105569899 A CN105569899 A CN 105569899A
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- Prior art keywords
- stainless steel
- water tank
- organic glass
- funnel
- transparent organic
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Classifications
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
A spray shield applicable to a nozzle atomization performance PDA experiment comprises a regularly decagonal transparent organic glass protective main body, a stainless steel funnel, and a stainless steel water tank; the bottom of the regularly decagonal transparent organic glass protective main body is connected with the top of the stainless steel funnel that is of an inverted-cone-shaped structure, and the bottom of the stainless steel funnel is connected with the stainless steel water tank, and the three parts together form the shield. The spray shield applicable to the nozzle atomization performance PDA experiment is designed on the basis of using water as a spray medium; the whole spray process forms a cyclic system; the disturbance of spray caused by air in the environment can be effectively removed; meanwhile, air return is avoided from generating in the spray process, and the experiment precision is effectively improved. The spray shield has the advantages of simple manufacturing, low cost, effective improvement of the experiment precision, avoidance of pollution of spray to a laboratory, and the like.
Description
Technical field
The present invention relates to a kind of novel atomizing protective housing that can be used for nozzle atomization characteristic PDA experiment newly, relate to spray characteristics experiments of measuring.The invention belongs to the technical field of nozzle atomization feature measurement.
Background technique
At present, the country that independently can develop High Performance Aeroengine in the world only has a few countries such as American and Britain, method, Russia, and technical threshold is very high.The development level of aero engine technology is the important embodiment of a national science and technology, industry and military capability of the country.Fuel nozzle, as the important component part of aeroengine, has vital effect to the performance of aeroengine.Nozzle performance, to ensureing normal fuel injection, starting performance, the normal combustion of aeroengine, improves combustion efficiency, reduces pollutant emission, reduce the ablation of wall and to smolder and carbon distribution is formed with very important impact.
Under actual environmental conditions, also there are some difficulties in the characteristic test of aeroplane engine machine nozzle mist field, as: under physical environment, utilize PDA directly to test injection experiment, be vulnerable to the disturbing influence of environmental air, not only cause measurement error, and cannot effectively collect spraying medium, produce the waste of spraying medium.If carry out PDA test experiments in a closed chamber, the path of propagation of laser beam is subject to the impact of its cavity, causes refractive index to change, and then causes spray characteristics DATA REASONING error.
Summary of the invention
The present invention is in order under ensureing to test the prerequisite of carrying out smoothly, devises a kind of easy to use and effectively improve the protective housing of measuring accuracy.This protective housing can reduce the distracter new to experiment generation, improves measuring accuracy, and effectively reduces laboratory pollution, improve the recirculation utilization efficiency of spraying.The object of this invention is to provide the transparent organic glass protection main body that a diameter is 700mm, the high regualr decagon for 600mm, top can the poly (methyl methacrylate) plate lid of right/left pull form by two pieces, opening a diameter in the centre of every plate lid is the semicircle orifice of 10cm, is used for making the confession matter pipe of the fixing rod of nozzle and spraying medium enter protective housing inside and sprays.
For achieving the above object, the technical solution used in the present invention is as follows, a kind of spraying protective cover that can be used for nozzle atomization characteristic PDA and test, this protective housing comprises transparent organic glass protection main body (1), stainless steel funnel (2), the stainless steel water tank (3) of regualr decagon, the bottom of transparent organic glass protection main body (1) of regualr decagon is connected with the top of stainless steel funnel (2), stainless steel funnel (2) is inverted cone-shaped structure, the bottom of stainless steel funnel (2) is connected with stainless steel water tank (3), and three forms this protective housing jointly.
It is nesting type assembly structure that the transparent organic glass of described regualr decagon protects between main body (1), stainless steel funnel (2), stainless steel water tank (3).
The top of transparent organic glass protection main body (1) of described regualr decagon by two pieces of poly (methyl methacrylate) plates of front and back pull as cover plate, the heartcut contacted at two cover plates has the semiround body of an indent, and the through hole (5) of two halves circle composition is nozzle and the entrance entering protective housing for fluid catheter; The transparent organic glass of regualr decagon protects the side of main body (1) and the symmetrical axis that angle is two pieces of transparent plexiglass plates of 108 ° is provided with two circular ports, this two shapes circular hole is respectively the light path entrance (6) of PDA two camera lenses, and the design of this light path entrance (6) can avoid transparent organic glass to the interference of PDA Emission Lasers effectively; And the use of transparent organic glass allows the spray condition of experimenter's observation experiment.The design of stainless steel funnel (2) and stainless steel water tank (3), makes whole experimental system form one and sprays the system reclaimed, avoid the waste of experiment material, reduce experimental cost.(7) suitable for reading and the end opening (8) of stainless steel funnel (2); The side of stainless steel water tank (3) is provided with an induced draft fan (9), the bottom of stainless steel water tank (3) processes a liquid port (10), is processed with a circular hole (4) matched with stainless steel funnel (2) end opening above stainless steel water tank (3).The effect of induced draft fan (9) is that return air when preventing spraying in protective housing interferes with normal spraying.The transparent organic glass protection main body of regualr decagon and stainless funnel are that nesting type assembles, and ensure that sealing; Funnel and water tank also adopt nesting type to assemble.
Compared with prior art, the present invention has following beneficial effect.
1, novel part of the present invention devises a kind of new spraying protective equipment.Angle between PDA two camera lenses is determined by the refractive index of ejection medium, and when ejection medium is water, the refractive index due to water is 1.334, and therefore the angle of PDA two camera lens is 72 °.The design that the positive odd plots of land that can be cultivated of protective housing of the present invention is capable, ensure that the normal parallel of incident laser light and subtend poly (methyl methacrylate) plate, and incident light is overlapped with reflected light, avoids occurring intersecting measuring body, ensure that measuring accuracy.
2, novel part of the present invention makes whole measuring system form a circulatory system, avoids the waste of resource, reduce experimental cost.
Accompanying drawing explanation
Fig. 1 is the front view of native system.
Fig. 2 is the plan view of regualr decagon transparent plexiglass plate of the present invention.
Fig. 3 is the plan view of regualr decagon transparent plexiglass plate of the present invention.
Fig. 4 is the plan view of funnel of the present invention.
Fig. 5 is the plan view of funnel of the present invention.
Fig. 6 is the plan view of water tank of the present invention.
Fig. 7 is the plan view of water tank of the present invention.
In figure: 1, the transparent organic glass protection main body of regualr decagon, 2, stainless steel funnel, 3, stainless steel water tank, 4, circular hole, 5, through hole, 6, light path entrance, 7, suitable for reading, 8, end opening, 9, induced draft fan, 10, liquid port.
Concrete mode of execution
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in figs. 1-7, working procedure of the present invention is as follows, nozzle is at the transparent organic glass protective housing internal spraying of regualr decagon, the water of ejection will enter water tank by funnel, induced draft fan on water tank, with suitable power work, discharges the air-flow because spraying produces, and the outside suction engine work that water tank bottom connects, the water of ejection is sucked water storage box, as the spraying medium of subsequent time.
Its processing should meet following requirement:
A) protective housing of this kind of regualr decagon adopts the metal frame of grinding machine processing aluminum alloy material, processing essence is 0.001mm, use thickness to be the plexiglass that 5mm is transparent in each frame, the processing method of the laser beam cutting used during each hole on glass plate, ensure that machining accuracy.
B) funnel and water tank use stainless steel, and water tank adopts the processing of stamping forming method large, to use the method processing of laser beam cutting during hole on water tank.
Claims (3)
1. the spraying protective cover that can be used for nozzle atomization characteristic PDA and test, it is characterized in that: this protective housing comprises transparent organic glass protection main body (1), stainless steel funnel (2), the stainless steel water tank (3) of regualr decagon, the bottom of transparent organic glass protection main body (1) of regualr decagon is connected with the top of stainless steel funnel (2), stainless steel funnel (2) is inverted cone-shaped structure, the bottom of stainless steel funnel (2) is connected with stainless steel water tank (3), and three forms this protective housing jointly;
The top of transparent organic glass protection main body (1) of described regualr decagon by two pieces of poly (methyl methacrylate) plates of front and back pull as cover plate, the heartcut contacted at two cover plates has the semiround body of an indent, and the through hole (5) of two halves circle composition is nozzle and the entrance entering protective housing for fluid catheter; The transparent organic glass of regualr decagon protects the side of main body (1) and the symmetrical axis that angle is two pieces of transparent plexiglass plates of 108 ° is provided with two circular ports, this two shapes circular hole is respectively the light path entrance (6) of PDA two camera lenses, and the design of this light path entrance (6) can avoid transparent organic glass to the interference of PDA Emission Lasers effectively; And the use of transparent organic glass allows the spray condition of experimenter's observation experiment; The design of stainless steel funnel (2) and stainless steel water tank (3), makes whole experimental system form one and sprays the system reclaimed, avoid the waste of experiment material, reduce experimental cost; (7) suitable for reading and the end opening (8) of stainless steel funnel (2); The side of stainless steel water tank (3) is provided with an induced draft fan (9), the bottom of stainless steel water tank (3) processes a liquid port (10), is processed with a circular hole (4) matched with stainless steel funnel (2) end opening above stainless steel water tank (3); The effect of induced draft fan (9) is that return air when preventing spraying in protective housing interferes with normal spraying.
2. a kind of spraying protective cover that can be used for nozzle atomization characteristic PDA and test according to claim 1, is characterized in that: it is nesting type assembly structure that the transparent organic glass of described regualr decagon protects between main body (1), stainless steel funnel (2), stainless steel water tank (3).
3. a kind of spraying protective cover that can be used for nozzle atomization characteristic PDA and test according to claim 1, it is characterized in that: nozzle is at the transparent organic glass protective housing internal spraying of regualr decagon, the water of ejection will enter stainless steel water tank (3) by funnel, induced draft fan (9) on stainless steel water tank (3) works and discharges the air-flow because spraying produces, and outside suction engine (9) work that stainless steel water tank (3) bottom connects, the water of ejection is sucked water storage box, as the spraying medium of subsequent time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610056574.XA CN105569899B (en) | 2016-01-27 | 2016-01-27 | A kind of spraying protective cover tested available for nozzle atomization characteristic PDA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610056574.XA CN105569899B (en) | 2016-01-27 | 2016-01-27 | A kind of spraying protective cover tested available for nozzle atomization characteristic PDA |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105569899A true CN105569899A (en) | 2016-05-11 |
| CN105569899B CN105569899B (en) | 2017-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610056574.XA Expired - Fee Related CN105569899B (en) | 2016-01-27 | 2016-01-27 | A kind of spraying protective cover tested available for nozzle atomization characteristic PDA |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1768792A1 (en) * | 1990-08-29 | 1992-10-15 | Bashkirskij Selskokhoz I | Device for measuring cyclic fuel supply |
| US6234002B1 (en) * | 1997-09-05 | 2001-05-22 | David W. Sisney | Apparatus and methods for cleaning and testing fuel injectors |
| CN101275529A (en) * | 2008-03-25 | 2008-10-01 | 宋玉堂 | Test table for oil injector of marine diesel and fuel injector test methods |
| CN101858291A (en) * | 2010-04-30 | 2010-10-13 | 广州市铭珠电控设备科技有限公司 | Detection and analysis test stand of electric control diesel engine injector and control method thereof |
| CN202250537U (en) * | 2011-09-23 | 2012-05-30 | 河南科技大学 | Strobe synchronous shooting device for diesel engine common rail system |
| CN103792079A (en) * | 2014-01-25 | 2014-05-14 | 内蒙古科技大学 | Device for testing nozzle characteristics |
-
2016
- 2016-01-27 CN CN201610056574.XA patent/CN105569899B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1768792A1 (en) * | 1990-08-29 | 1992-10-15 | Bashkirskij Selskokhoz I | Device for measuring cyclic fuel supply |
| US6234002B1 (en) * | 1997-09-05 | 2001-05-22 | David W. Sisney | Apparatus and methods for cleaning and testing fuel injectors |
| CN101275529A (en) * | 2008-03-25 | 2008-10-01 | 宋玉堂 | Test table for oil injector of marine diesel and fuel injector test methods |
| CN101858291A (en) * | 2010-04-30 | 2010-10-13 | 广州市铭珠电控设备科技有限公司 | Detection and analysis test stand of electric control diesel engine injector and control method thereof |
| CN202250537U (en) * | 2011-09-23 | 2012-05-30 | 河南科技大学 | Strobe synchronous shooting device for diesel engine common rail system |
| CN103792079A (en) * | 2014-01-25 | 2014-05-14 | 内蒙古科技大学 | Device for testing nozzle characteristics |
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| Publication number | Publication date |
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| CN105569899B (en) | 2017-11-03 |
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Granted publication date: 20171103 Termination date: 20210127 |