CN109682325A - Frustoconical bevel angle inspection, correcting device and method in aero-engine fuel nozzle body - Google Patents
Frustoconical bevel angle inspection, correcting device and method in aero-engine fuel nozzle body Download PDFInfo
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- CN109682325A CN109682325A CN201811429335.XA CN201811429335A CN109682325A CN 109682325 A CN109682325 A CN 109682325A CN 201811429335 A CN201811429335 A CN 201811429335A CN 109682325 A CN109682325 A CN 109682325A
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- conical surface
- nozzle body
- test pin
- hole
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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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- General Physics & Mathematics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses frustoconical bevel angle inspections in a kind of aero-engine fuel nozzle body, correcting device and method, device includes being parallel to each other and spaced upper and lower arms, the locking device for having mounting hole on lower arm and being connect with mounting hole, circular through hole is provided on upper arm, circular through hole keeps coaxial concentric with the mounting hole on lower arm, the present invention is equipped with outer diameter size and the consistent test pin of through-hole, the test pin bottom end is conical surface-shaped, cone angle and cone angle in nozzle body are in the same size, by being combined with stain, observe inner conical surface cone angle situation, pass through circular conical surface and inner conical surface the friction amendment inner conical surface of test pin.
Description
Technical field
The invention belongs to Geometrical Parameter Testing and repair of machine technical fields, are related to small size, small-bore fuel nozzle inner cone
The inspection method at face cone angle repairs bearing calibration and device.
Background technique
Aircraft engine fuel manifold is the important component in aero gas turbine engine main chamber, function be to
Injection and atomized fuel in the burner inner liner of engine main chamber, each nozzle is by spout cyclone, the spout with gas hood, eddy flow
Device, secondary oily filter are assembled, and each nozzle has two mutually independent two oil circuits, an oil circuit through fuel manifold working connection into
Hydraulic fluid port enters, and after fuel oil flows through the screw thread tooth of main oily filter, becomes owner of in spin chamber by the way that the slot in spout cyclone outer circle is laggard
Generate high speed rotary motion, then from the spout with gas hood spray orifice spray, another oil circuit from fuel manifold auxiliary oil circuit into
Hydraulic fluid port enters, and fuel oil flows through the inner cavity for entering cyclone after the screw thread tooth of secondary oily filter, through on the aperture and the conical surface on cyclone
Slot, into secondary spin chamber in generate high speed rotary motion, then from spout-cyclone spray orifice spray.Because by inertia force and
The effect of air impact is broken into countless tiny oil droplets, to obtain good atomization result.
Fuel manifold nozzle body inner conical surface angle directly influences the Spray Uniformity and spray direction of fuel oil, and then influences
To the power performance of engine, so, processing and control for frustoconical bevel angle in fuel nozzle body are of crucial importance, however, by
In small in size, cause internal aperture smaller, can detect currently without suitable measuring instrument to inside and cone angle in it is carried out
It directly detects, common method mainly destroys its feature in kind, it is half-and-half splitted, then is detected.Therefore, one kind is studied
In the case where not destroying its feature in kind, can it is intuitive, fast and accurately measurement method cone angle in nozzle body is measured and
The method of control, has great importance.
Summary of the invention
The technical problem to be solved by the present invention is provide frustoconical bevel angle inspection in a kind of aero-engine fuel nozzle body,
Correcting device and method realize the quick of nozzle inner pyramidal angle, visual inspection and control, thus realize fuel spray uniformity and
The accuracy of spray direction.
The technical scheme is that
Frustoconical bevel angle inspection, correcting device in aero-engine fuel nozzle body, including test pin, locking device, upper arm
And lower arm, there is an interval between upper and lower arms；
There is the through-hole for always putting on the upper and lower end face of arm on the upper arm；
There is a mounting hole on the lower arm, mounting hole and the through-hole on the upper arm are coaxial；
The locking device is connected with the mounting hole on lower arm, and nozzle body is placed in one；
The test pin is removably connected in through-hole, and coaxial with through-hole, and there are a conical surface, the cone in the end of test pin
Face is matched with nozzle body inner conical surface to be checked.
As a kind of selection, the mounting hole is stepped hole；The locking device includes positioning bushing and locking nut, institute
Stating positioning bushing is a ladder-like annulus part, and surface is provided with notch in the axial direction, and positioning bushing one end is placed in mounting hole, and
By the plug screw positioning on lower arm, positioning sleeve surface has one section of screw thread, and the locking nut is connect with positioning bush threads.
Alternatively, the mounting hole is stepped hole, and wherein has internal screw thread on a hole wall；The locking dress
It sets including positioning ring, mounting disc and positioning stud, the positioning ring is a ladder-like annulus part, and the mounting disc is provided with for end face
The disc of circular trough, there is notch in the positioning stud end face, and positioning stud is threadedly engaged with mounting hole.
Preferably, bushing is provided in the through-hole of the upper arm.
Frustoconical bevel angle inspection method in a kind of aero-engine fuel nozzle body using above-mentioned apparatus, in nozzle body inner cone
Colorant is smeared on the surface in face, and be will test the pin conical surface and be placed in the inner conical surface of nozzle body to be checked, and test pin is rotated, and extracts inspection
Test pin conical surface coloring case to be checked is observed after surveying pin, uniform coloring then meets the requirements, unevenly then undesirable.
Preferably, the uncolored area information of the test pin conical surface is obtained by optical scanner, with the uncolored face of the test pin conical surface
Product accounts for the ratio of nozzle body inner conical surface total surface area to judge whether inner conical surface is qualified.
As a kind of selection, when the ratio that the uncolored area of the test pin conical surface accounts for inner conical surface total surface area is greater than 1/10,
Inner conical surface is unqualified.
Frustoconical bevel angle modification method in a kind of aero-engine fuel nozzle body using above-mentioned apparatus, by surface cleaning
The test pin conical surface is placed in the inner conical surface of nozzle body to be modified, is applied pressure to one end of test pin and is rotated, so that the conical surface exists
Spin friction in the inner conical surface of nozzle body to be modified.
The present invention provides a kind of inspection and modification methods to realize internal cone angle by the dedicated check device of design
It quick and precisely checks, while calibration function being provided, cone angle in nozzle body is checked, corrected and controlled, to allow engine
Obtain satisfactory mist flow and direction.
Compared with prior art, it is an advantage of the invention that being embodied in: firstly, check device is simple to manufacture, it is economical, it is easy
Calibration.Secondly, the detection of cone angle in nozzle body can be fast implemented, and can internal cone angle under conditions of not destroying nozzle body
It places under repair, correct, reduce product rejection rate.
Detailed description of the invention
Fig. 1 is nozzle body-nozzle cyclone inner conical surface detection device design drawing；
Fig. 2 is nozzle body-gas hood cone in the jet face detection device design drawing.
Specific embodiment
Technical solution of the present invention is described further below in conjunction with attached drawing, but required protection scope does not limit to
In described.
The present invention devises base used specially 1 and fixed locking device, bottom according to the outer diameter size and structure of nozzle body
The U-shaped structure of seat, including be parallel to each other and spaced upper and lower arms, have and the matched installation of locking device on lower arm
Hole is mainly responsible for fixed and locking nozzle body.Circular through hole is provided on upper arm, the mounting hole on circular through hole and lower arm keeps same
Axis is concentric.The present invention is equipped with outer diameter size and the consistent multiple test pins 4 of through-hole, such as nozzle cyclone inner conical surface
First test pin and (actually the quantity of test pin 4 is according to the ruler of inner conical surface for second test pin in gas hood cone in the jet face
Very little characteristic Design, mainly in cone angle, to meet different size requirements), 4 bottom end of test pin be conical surface-shaped, cone angle with
Cone angle is in the same size in nozzle body.It, can be logical in order to avoid the surface of test pin 4 causes axis not to be overlapped with the abrasion of through-hole
Increase the bushing 14 of wear-resistant material preparation in hole.
Carry out nozzle body in cone angle detection before, first by nozzle body inner conical surface surface uniformly smear red ink paste or it is other can
Then the red paint of wiping will test pin 4 and visit into inside nozzle body, on earth after, rotating to the right 360 ° (not apply axial pressure
Power), then 360 ° are rotated to the left, test pin 4 is extracted, takes out nozzle body, and observe its 4 end conical surface coloring case of test pin, if
Uniform coloring, then cone angle is preferable in nozzle body, meets the requirements, conversely, coning angle is undesirable in illustrating, can will test pin 4
Circular conical surface wiped clean probes into nozzle body inner cone again, until forcing test pin 4, and 360 ° of left and right using suitable behind bottom
Rotation, repeatedly repeatedly, is then detected, again until the conical surface uniform coloring of test pin 4.The spray of different cone angle
Mouth body, only need to be equipped with corresponding test pin 4 may make up component.
As depicted in figs. 1 and 2, firstly, according to the size of cone angle in the fuel nozzle body to be detected, select cone angle matched
First test pin or the second test pin.Nozzle body-nozzle cyclone or gas hood spout are fixed in corresponding locking device simultaneously
Locking, locking device are mounted in mounting hole.
As shown in Figure 1, the mounting hole on lower arm is stepped hole, locking device includes positioning bushing 21 and locking nut 31,
Positioning bushing 21 is a ladder-like annulus part, and surface is provided with notch in the axial direction, and positioning 21 one end of bushing is placed in mounting hole,
And positioned by the plug screw 17 on lower arm, there are one section of screw thread, locking nut 31 and positioning 21 screw thread of bushing in positioning 21 surface of bushing
The inner hole of connection, locking nut 31 is stepped hole, wherein having screw thread on a hole wall.Nozzle body is clamped in 31 He of locking nut
It positions between bushing 21.
As shown in Fig. 2, the mounting hole on lower arm is stepped hole, and wherein there are internal screw thread, locking device packet on a hole wall
Positioning ring 32, mounting disc 22 and positioning stud 15 are included, positioning ring 32 is a ladder-like annulus part, and mounting disc 22 is that end face is provided with circle
The disc of shape slot, there is notch in 15 end face of positioning stud, and positioning stud 15 is threadedly engaged with mounting hole.Positioning ring 32, installation
Disk 22 and positioning stud 15 are arranged successively along the axis direction of mounting hole, and nozzle body is clamped in positioning ring 32 and mounting disc 22
Between, since positioning ring 32 is ladder-like, while mounting hole also non-stepped hole, therefore positioning ring 32 is positioned in mounting hole,
Positioning stud 15 withstands realization locking from mounting hole bottommost.
By taking the inspection of nozzle cyclone and amendment as an example: smearing uniformly insertion with red ink paste on nozzle cyclone inner conical surface
In the mounting hole of upper lower arm, slowly put down, close to cyclone outside aperture when, speed slows down, pay attention to observation, should not be with bore edges
Contact, until probeing into cyclone inner conical surface bottom, gently withstand section on test pin 4, and rotate to the right 360 °, then to
360 ° of anticlockwise, test pin 4 is extracted, removes cyclone, observes 4 coloring case of test pin, if uniform coloring, cone angle is conformed to
It asks, conversely, cone angle deviates or bias, needs to repair correction.
The uncolored area information in test pin conical surface surface is obtained using optical scanner in the present embodiment, is accounted for uncolored area
The ratio of inner conical surface total surface area judges whether inner conical surface is qualified.Its principle of optical scanner measuring device is by equipment to inspection
The measured surface (conical surface) for surveying pin emits light, and light is after reaching conical surface surface, and since metal has light-reflecting property, equipment is being received
The actual profile of tested surface (conical surface) is formed, corresponding geometry then can be carried out by complicated calculations to the light fired back
Amount evaluation.
By optical scanning device to after coloring test pin 4 carry out centrum appearance Surface scan, it is colored partly because by
Ink paste covering is coloured, reflected light is less, causes the point cloud data shown in Survey Software rare, cannot complete structure
At geometrical characteristic, without the test pin body surface face coloured, light reflective is good, can be formed in optical measurement software closeer
Point cloud data, constitute the geometrical characteristic of completion, it is available not by coloured part by the Calculation Estimation function of software
Approximation surface area can calculate vertebra face surface area in nozzle body according to cone surface product calculation formula before measuring, according to
The precision adjusting parameter of optical scanner measuring device, when meeting following situations, it is believed that coning angle is unqualified in tested nozzle body: not
Vertebra face total surface area S > 1/10 in the vertebra face surface area S1/ nozzle of the test pin 4 coloured, i.e.,When, it is believed that nozzle body
Interior cone angle is unqualified, needs to repair.
It places under repair correction to the cyclone for not meeting cone angle requirement, ink paste on the test pin 4 of coloration detection is wiped
Only, it is ensured that nose cone cleaning, the same with mode of operation when detection, test pin probes into cyclone inner cone bottom again, firmly pushes down
Test pin, and 360 ° are rotated to the right, 360 ° are rotated to the left, repeatedly repeatedly, test pin 4 and cyclone are taken out, by cyclone
Inner cone is clean, uniformly smears ink paste after 4 nose cone wiped clean of test pin, examines again to the cyclone repaired
It surveys, repeatedly, until it is qualified to repair correction.
Claims (8)
1. frustoconical bevel angle inspection, correcting device in aero-engine fuel nozzle body, it is characterised in that: including test pin, locking
Device, upper and lower arms have an interval between upper and lower arms；
There is the through-hole for always putting on the upper and lower end face of arm on the upper arm；
There is a mounting hole on the lower arm, mounting hole and the through-hole on the upper arm are coaxial；
The locking device is connected with the mounting hole on lower arm, and nozzle body is placed in one；
The test pin is removably connected in through-hole, and coaxial with through-hole, and there is a conical surface in the end of test pin, the conical surface with
Nozzle body inner conical surface matching to be checked.
2. frustoconical bevel angle inspection, correcting device in aero-engine fuel nozzle body according to claim 1, feature exist
In: the mounting hole is stepped hole；
The locking device includes positioning bushing and locking nut, and the positioning bushing is a ladder-like annulus part, and surface is along axis
Line direction is provided with notch, and positioning bushing one end is placed in mounting hole, and is positioned by the plug screw on lower arm, and positioning sleeve surface has
One section of screw thread, the locking nut are connect with positioning bush threads.
3. frustoconical bevel angle inspection, correcting device in aero-engine fuel nozzle body according to claim 1, feature exist
In: the mounting hole is stepped hole, and wherein has internal screw thread on a hole wall；
The locking device includes positioning ring, mounting disc and positioning stud, and the positioning ring is a ladder-like annulus part, the peace
Sabot is the disc that end face is provided with circular trough, and there is notch in the positioning stud end face, and positioning stud is matched with mounting hole screw thread
It closes.
4. frustoconical bevel angle inspection, correcting device in aero-engine fuel nozzle body according to claim 1, feature exist
In: bushing is provided in the through-hole of the upper arm.
5. frustoconical bevel angle inspection method in a kind of aero-engine fuel nozzle body using Claims 2 or 3 described device,
It is characterized in that: smearing colorant on the surface of nozzle body inner conical surface, and will test the inner cone that the pin conical surface is placed in nozzle body to be checked
In face, test pin is rotated, observes test pin conical surface coloring case to be checked after extracting test pin, uniform coloring then meets the requirements,
It is uneven then undesirable.
6. frustoconical bevel angle inspection method in aero-engine fuel nozzle body according to claim 5, it is characterised in that: logical
It crosses optical scanner and obtains the uncolored area information of the test pin conical surface, it is total that nozzle body inner conical surface is accounted for the uncolored area of the test pin conical surface
The ratio of surface area judges whether inner conical surface is qualified.
7. frustoconical bevel angle inspection method in aero-engine fuel nozzle body according to claim 6, it is characterised in that: when
When the ratio that the uncolored area of the test pin conical surface accounts for nozzle body inner conical surface total surface area is greater than 1/10, inner conical surface is unqualified.
8. frustoconical bevel angle modification method in a kind of aero-engine fuel nozzle body using Claims 2 or 3 described device,
It is characterized in that: the test pin conical surface of surface cleaning is placed in the inner conical surface of nozzle body to be modified, one end of test pin is applied
Pressure simultaneously rotates, so that conical surface spin friction in the inner conical surface of nozzle body to be modified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811429335.XA CN109682325A (en) | 2018-11-27 | 2018-11-27 | Frustoconical bevel angle inspection, correcting device and method in aero-engine fuel nozzle body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811429335.XA CN109682325A (en) | 2018-11-27 | 2018-11-27 | Frustoconical bevel angle inspection, correcting device and method in aero-engine fuel nozzle body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109682325A true CN109682325A (en) | 2019-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811429335.XA Pending CN109682325A (en) | 2018-11-27 | 2018-11-27 | Frustoconical bevel angle inspection, correcting device and method in aero-engine fuel nozzle body |
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| CN (1) | CN109682325A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114800249A (en) * | 2022-04-24 | 2022-07-29 | 中国人民解放军第五七一九工厂 | Repairing method for comprehensive geometric tolerance of K bracket of main fuel regulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245272A (en) * | 2013-05-06 | 2013-08-14 | 重庆望江工业有限公司 | Gauge for measuring short inner cone |
| CN204286342U (en) * | 2014-11-19 | 2015-04-22 | 四川望锦机械有限公司 | A kind of spherical arc inner chamber stained area detection limit gasifying device |
| CN104492991A (en) * | 2014-12-23 | 2015-04-08 | 贵州黎阳航空动力有限公司 | Locking mechanism of nozzle assembly |
| CN104897380A (en) * | 2015-04-09 | 2015-09-09 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Common-rail pipe pressure-limiting valve matching element pressure-holding stroke detecting device and measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114800249A (en) * | 2022-04-24 | 2022-07-29 | 中国人民解放军第五七一九工厂 | Repairing method for comprehensive geometric tolerance of K bracket of main fuel regulator |
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Application publication date: 20190426 |