CN106500572B - A kind of spray angle of nozzle detection calibration tool and method of calibration of probe location - Google Patents

A kind of spray angle of nozzle detection calibration tool and method of calibration of probe location Download PDF

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Publication number
CN106500572B
CN106500572B CN201611170296.7A CN201611170296A CN106500572B CN 106500572 B CN106500572 B CN 106500572B CN 201611170296 A CN201611170296 A CN 201611170296A CN 106500572 B CN106500572 B CN 106500572B
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probe
positioning seat
axis
groove
plug
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CN106500572A (en
Inventor
杨能阁
孙辉
路江英
韩新艳
赵芳辉
吕阿鹏
张靖
杜坤
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AECC Aviation Power Co Ltd
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AVIC Aviation Engine Corp PLC
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/24Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention discloses the calibration tools and method of calibration of a kind of spray angle of nozzle detection probe location, including verifying plug, the verification plug is multistage Step Shaft, including big axis, big axis lower end is the small axis in lower end, groove there are two being opened up at the big axis lower end surface distance h of the small wheelbase in lower end, h=P, P is the distance between probe lower end surface and testing equipment datum level, the height of groove upper wall is not higher than probe in the upper height limit of vertical direction, the height of lower wall is not less than probe in the height lower limit of vertical direction, substantially symmetrical about its central axis setting of the groove relative to the small axis in lower end, using the present apparatus and method of calibration, additional device is not needed, probe can verify neutral and high low state, structure is simple, it is easy to operate.

Description

A kind of spray angle of nozzle detection calibration tool and method of calibration of probe location
Technical field
The invention belongs to nozzle test equipment verification technologies, and in particular to a kind of spray angle of nozzle detection probe location Calibration tool and method of calibration.
Background technique
The characteristic of fuel nozzle includes flow, spray cone angle etc..The size of spray cone angle influences fuel oil inside burner inner liner Combustion efficiency.So needing to detect spray cone angle size, determine.Spray cone angle detection at present frequently with method be visit The skill of handling needles --- some axial position (H is determined by nozzle designer) i.e. after spout utilizes on testing equipment referring to Fig.1 Gear and rack teeth mechanism principle, and by height-adjustable threaded connection, it is arranged two with spout axisymmetrical, and can edge The transportable pointer of horizontal direction (probe) mechanism, (specifically: cabinet, cabinet and testing equipment are installed on testing equipment It is threadedly coupled, and is provided with the gasket for box height between cabinet and testing equipment, be arranged in cabinet for driving probe The rack and pinion drive mechanism that mechanism moves horizontally and the guide rail for limiting rack transfer path, probe mechanism are arranged in rack gear Front end);Probe tails, which are arranged two, can be achieved linkage dial gauge;When measuring spray cone angle, traveling probe, hundred with probe linkage Indicator needles also can rotate, and when probe and plume contact, read percentage meter reading, and at this moment percentage meter reading is equivalent to probe shifting Dynamic distance;Under the conditions of known probe and jet opening distance H and probe moving distance L, arc tangent trigonometric function α/2=is utilized Arctg (L/H) can calculate spray cone angle size.
Using testing equipment datum level as positioning datum, probe mechanism passes through height-adjustable for probe mechanism and nozzle Threaded connection is mounted in equipment, and with testing equipment datum level away from for P, nozzle is also fitted in equipment by tooling, is led to Tooling control vents face and testing equipment datum level distance W are crossed, guarantees W=P-H, to guarantee size H.
Probe mechanism is generally cantilever beam structure, therefore after using for a longer period, it may appear that deformation, so needing to determine Phase verifies neutral and high low state to probe.Original verification probe, to neutrality, is bonded using cylindrical rod inspection with leveling ruler Probe uses slide calliper rule or depthometer to combine again and checks probe away from testing equipment reference distance, needs to carry out cumbersome, detection twice As a result not intuitive.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of calibration tools of spray angle of nozzle detection probe location And method of calibration does not need additional device using the present apparatus and method of calibration, so that it may to probe to neutral and high low state It is verified, structure is simple, easy to operate.
In order to achieve the above objectives, a kind of calibration tool of spray angle of nozzle detection probe location of the present invention includes Plug is verified, the verification plug is multistage Step Shaft, including big axis, and big axis lower end is the small axis in lower end, the big axis of the small wheelbase in lower end It is opened up at the distance h of lower end surface there are two groove, h=P, P are the distance between probe lower end surface and testing equipment datum level, groove The height of upper wall is not higher than probe in the upper height limit of vertical direction, and the height of lower wall is not less than probe in the height of vertical direction Lower limit, substantially symmetrical about its central axis setting of the groove relative to the small axis in lower end.
Further, the big axis upper end is provided with the small axis in upper end.
Further, the small axis in the upper end is provided with anti-skidding annular knurl.
Further, further include and the positioning seat of verification plug clearance fit, the positioning seat be step hollow shaft structure, The positioning seat includes the big axis of coaxial positioning seat and the small axis of positioning seat, and the big axis of positioning seat is used to limit the axial of positioning seat and moves Dynamic, the center of positioning seat is offered for the circular inner hole with the small shaft clearance cooperation in the lower end of verification plug, and circular inner hole runs through The big axis of positioning seat and the small axis of positioning seat, h=P+ δ, δ are the thickness of the big axis of positioning seat.
Further, the circular inner hole is used to the radial fit gap of verification plug be 0.01mm~0.05mm.
A kind of spray angle of nozzle detection method of calibration of probe location, comprising the following steps:
1) two probe tails are connect with dial gauge respectively, and to away from the movement of mutual direction, prevents itself and verification Plug interferes;
2) by the location hole of positioning seat small axis insertion testing equipment, and make the lower end surface of the big axis of the positioning seat of positioning seat with Testing equipment datum level fits closely;
3) circular inner hole that will verify plug insertion positioning seat, makes the big axis of positioning seat of the big axis lower end surface and positioning seat Upper end facial plane fitting, two grooves are rotated to front-rear direction, place groove in vertical direction with probe;
4) probe is mobile to two sides;
5) rotation verification plug, keeps the position of groove opposite with probe, and the bottom center of groove and probe tip face;
6) by two probes to gradually mobile to plug is tested, if end of probe without hindrance can enter groove, probe position Set qualification;
If 7) end of probe has obstruction or cannot be introduced into groove, need to readjust probe high and low position then repetition step 1) verification of spraying probe~6) can be completed.
Further, before step 4), the reading adjustment for the dial gauge that two are connect with probe is consistent, concrete operations Method is to move towards two probes, is allowed to touch verification plug, whether two percentage meter readings that observation links with probe It is identical, if not identical, percentage list index is adjusted, keeps the reading of two dial gauges equal.
Compared with prior art, the present invention at least has technical effect beneficial below, and the present invention passes through in verification plug Upper setting groove determines whether the position of probe meets the requirements so that whether probe can be inserted into groove, and structure is simple, operation side Just, check results are intuitive.
Big axis upper end is provided with the small axis in upper end, when being verified, conveniently takes and verifies plug.
The small axis in upper end is provided with anti-skidding annular knurl, effectively avoids when picking up verification plug because of the small axis skin-friction force in upper end It is small, it is caused to fall phenomenon accidentally.
It further include the positioning seat with verification plug clearance fit, positioning seat is step hollow shaft structure, and positioning seat includes same The big axis of the positioning seat of axis and the small axis of positioning seat, the big axis of positioning seat are used to limit the axial movement of positioning seat, and the center of positioning seat is opened Equipped with for the circular inner hole with the small shaft clearance cooperation in the lower end of verification plug, circular inner hole runs through the big axis of positioning seat and positioning seat Small axis, h=P+ δ, δ are the thickness of the big axis of positioning seat, increase a positioning seat, can be selected according to the bound of probe location The positioning seat of different-thickness, in this way, when the probe of verification different location requirement, it is only necessary to replace suitable positioning seat, no It needs to make verification plug again, production cost is greatly saved.
Circular inner hole is used to the cooperation radial clearance of verification plug be 0.01mm~0.05mm, takes convenient for verification plug 2 It puts, and allows not influencing probe to centre symmetry precision in claimed range in precision.
Detailed description of the invention
Fig. 1 is that sonde method detects spray angle schematic diagram;
Fig. 2 is the verification status diagram of embodiment 1;
Fig. 3 is the verification status diagram of embodiment 2;
Fig. 4 is the location seat structure schematic diagram of embodiment 2;
Fig. 5 is the verification mandrel structure schematic diagram of embodiment 2.
In attached drawing: 1, positioning seat, 11, the big axis of positioning seat, 12, the small axis of positioning seat, 13, circular inner hole, 111, positioning seat it is big The lower end surface of axis, 112, the upper surface of the big axis of positioning seat, 2, verification plug, 21, the small axis in upper end, 22, big axis, 221, big axis lower end Face, 23, the small axis in lower end, 231, the small axis outer circle in lower end, 24, groove, 3, probe, 4, testing equipment datum level.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Embodiment 1
Referring to Fig. 2, a kind of calibration tool of spray angle of nozzle detection probe location includes verification plug 2, verifies core Stick 2 is second order Step Shaft, including big axis 22, and big 22 lower end of axis is the small axis 23 in lower end, the small axis 23 in lower end away from big axis lower end surface 221 away from From being opened up at h there are two groove 24, h=P, P is the distance between probe lower end surface and testing equipment datum level 4, on groove 24 The height of wall is not higher than probe in the upper height limit of vertical direction, and the height of lower wall is not less than probe under the height of vertical direction Limit, substantially symmetrical about its central axis setting of the groove 24 relative to the small axis 23 in lower end when being verified, will verify 2 loading test of plug In the location hole of equipment, before verification, probe is located at the two sides of the small axis 23 in lower end of verification plug, and structure is simple, easy to operate.
The method of calibration of spray angle of nozzle detection probe location is carried out using above-mentioned apparatus, comprising the following steps:
1) tail portion of two probes is connect with dial gauge respectively, and to away from the movement of mutual direction, prevents itself and school Plug 2 is tested to interfere;
2) by verify plug 2 be inserted into testing equipment location hole in, and make verify plug 2 big axis lower end surface 221 with Testing equipment datum level 4 fits closely, and two grooves are rotated to front-rear direction, put groove 24 in vertical direction with probe It sets;
3) two probes are moved towards, is allowed to touch verification plug 2, two percentage meter readings of observation and probe linkage It is whether identical, if not identical, percentage list index is adjusted, keeps the reading of two dial gauges equal, concrete operation method is, by two Probe moves towards, and is allowed to touch verification plug 2, whether observation and two percentage meter readings that probe links are identical, if not phase Together, percentage list index is adjusted, keeps the reading of two dial gauges equal.
4) probe is mobile to two sides;
5) rotation verification plug 2, keeps the position of groove 24 opposite with probe, and the bottom center of groove 24 and probe tip Face;
6) by two probes to gradually mobile to plug 2 is tested, if end of probe without hindrance can enter groove 24, probe Position is qualified;
If 7) end of probe has obstruction or cannot be introduced into groove 24, need to readjust probe high and low position then repetition step It is rapid 1)~6) verification of spraying probe can be completed.
Embodiment 2
Referring to Fig. 3, a kind of calibration tool of spray angle of nozzle detection probe location includes the positioning seat 1 of clearance fit With verification plug 2, when being verified, by the location hole of 1 loading test equipment of positioning seat, then the verification insertion of plug 2 is determined It is verified in the circular inner hole 13 of position seat 1, before verification, probe is located at the two sides of the small axis 23 in lower end of verification plug.
Referring to Fig. 4, positioning seat 1 is step hollow shaft structure, including the coaxial big axis 11 of positioning seat and the small axis 12 of positioning seat, The big axis 11 of positioning seat is used to limit the axial movement of positioning seat 1, the big axis 11 of positioning seat with a thickness of δ, the center of positioning seat 1 opens up There is the circular inner hole 13 for small 23 clearance fit of axis in lower end with verification plug 2, circular inner hole 13 runs through the big axis 11 of positioning seat With the small axis 12 of positioning seat, increase a positioning seat, the positioning seat of different-thickness can be selected according to the bound of probe location, In this way, when the probe of verification different location requirement, it is only necessary to replace suitable positioning seat, not need to make verification core again Production cost is greatly saved in stick, and lower end surface 111 is bonded with nozzle test equipment datum level 4, the small axis 12 of positioning seat and nozzle The location hole clearance fit of testing equipment, cooperation radial clearance are 0.02mm~0.05mm;The center of positioning seat 1 offers circle Inner hole 13, circular inner hole 13 run through the big axis 11 of positioning seat and the small axis 12 of positioning seat, which is used to match with verification plug Conjunction, cooperation radial clearance are 0.01mm~0.05mm, are picked and placed convenient for verification plug 2, and the not shadow in precision permission claimed range Probe is rung to centre symmetry precision.
Referring to Fig. 5, verification plug 2 is three rank stepped shaft structures, and the top is the small axis 21 in upper end, and middle part is big axis 22, Bottom is the small axis 23 in lower end, and the small axis 21 in upper end, middle part are that the small axis 23 of big axis 22 and lower end is fixed together, and is provided with Small axis 21 is held, verifies plug 2 convenient for conveniently taking when being verified, the small axis 21 in upper end is machined with annular knurl, holds convenient for using It holds, effectively avoids when picking up verification plug because the small axis skin-friction force in upper end is small, it is caused to fall phenomenon accidentally, verify plug 2 big axis 22 is used to limit moving up and down for verification plug 2, big 22 downside end face 221 of axis and big 11 upper surface 112 of axis of positioning seat Plane fitting, the outer circle 231 of the small axis in lower end and 1 circular inner hole 13 of positioning seat cooperate, cooperation radial clearance for 0.01mm~ 0.05mm, there are two groove 24, the groove phases away from opening up at big 22 downside end face of axis, 221 distance h for small 23 lateral surface of axis in lower end The setting substantially symmetrical about its central axis of axis 23 small for lower end, h=P+ δ, P are probe lower end surface and testing equipment datum level 4 away between Distance, δ are the thickness of the big axis 11 of positioning seat, and the width of groove 24 is that (width is according to the permitted front-rear position of probe by 0.5mm Determine), the height of 24 upper wall of groove is not higher than probe in the upper height limit of vertical direction, and the height of lower wall is not less than probe perpendicular Histogram to height lower limit, substantially symmetrical about its central axis setting of the groove 24 relative to the small axis 23 in lower end, if the height of probe is compound It is required that probe tip should be in insertion groove 24 that can be accessible then after probe is gradually moved to verification plug 2.
Certain type fuel nozzle requires measuring nozzle atomization angle, the nozzle test equipment at nozzle vent 12mm Atomization angle is detected using sonde method, in order to guarantee that atomization angle detects correctness, needs periodically to carry out school to probe mechanism It tests, parameter is as follows:
Probe is mounted on testing equipment, probe lower end surface and testing equipment datum level 4 away from being 22mm, vents face and 4 distance 10mm of testing equipment datum level, equipment positioning bore dia are
Big 11 diameter of axis of positioning seat is Φ 40, and step thicknesses δ is 5 ± 0.01mm, the lower end surface 111 of the big axis of positioning seat and examination The conjunction of 4 face paste of equipment benchmark is tested, the diameter of the small axis 12 of positioning seat isWith nozzle test equipment location hole radial fit Gap is 0.01mm~0.045mm;13 diameter of circular inner hole isIt is (straight with the small axis outer circle 231 in lower end of verification plug Diameter is) cooperation, radial fit gap is 0.015mm~0.04mm.
The small axis 21 of plug 2 is verified, diameter is Φ 10, big 22 diameter of phi 30 of axis, big axis lower end surface 221 and the big axis of positioning seat The fitting of 11 upper surface, 112 plane, small 231 diameter of axis outer circle in lower end are(diameter is with positioning seat circular inner hole 13) clearance fit, radial fit gap 0.015mm~0.04mm;The small axis 23 in lower end is away from big 22 downside end face 221 of axis It is machined with two symmetrical grooves 24 at distance h, h=P+ δ=22+5=27mm, groove width 0.5mm, along being probe location on groove 24 The upper limit, 24 lower edge of groove be probe location lower limit.
The method of calibration of spray angle of nozzle detection probe location is carried out using above-mentioned apparatus, comprising the following steps:
1) tail portion of two probes is connect with dial gauge respectively, and to away from the movement of mutual direction, prevents itself and school Plug 2 is tested to interfere;
2) the small axis 12 of positioning seat is inserted into the location hole of testing equipment, and makes the lower end of the big axis of the positioning seat of positioning seat 1 Face 111 is fitted closely with testing equipment datum level 4;
3) circular inner hole 13 that will verify the insertion positioning seat 1 of plug 2 makes the 22 downside end face 221 of big axis and positioning seat 1 The big axis of positioning seat 112 plane of upper surface fitting, two grooves are rotated to front-rear direction, keep groove 24 and probe perpendicular It places in direction;
4) two probes are moved towards, is allowed to touch verification plug 2, two percentage meter readings of observation and probe linkage It is whether identical, if not identical, percentage list index is adjusted, keeps the reading of two dial gauges equal.
5) probe is mobile to two sides;
6) rotation verification plug 2, keeps the position of groove 24 opposite with probe, and the bottom center of groove 24 and probe tip Face;
7) by two probes to gradually mobile to plug 2 is tested, if end of probe without hindrance can enter groove 24, probe Position is qualified;
If 8) end of probe has obstruction or cannot be introduced into groove 24, need to readjust probe high and low position then repetition step It is rapid 1)~7) verification of spraying probe can be completed.

Claims (7)

1. the calibration tool that probe location is used in a kind of spray angle of nozzle detection, which is characterized in that including verifying plug (2), institute Stating verification plug (2) is multistage Step Shaft, including big axis (22), and big axis (22) lower end is the small axis in lower end (23), the small axis in lower end (23) away from being opened up at big axis lower end surface (221) distance h there are two groove (24), h=P, P are probe lower end surface and testing equipment base The height of the distance between quasi- face (4), groove (24) upper wall is not higher than upper height limit of the probe in vertical direction, the height of lower wall Height lower limit not less than probe in vertical direction, substantially symmetrical about its central axis setting of the groove (24) relative to the small axis in lower end (23) It sets.
2. the calibration tool that probe location is used in a kind of spray angle of nozzle detection according to claim 1, which is characterized in that Big axis (22) upper end is provided with the small axis in upper end (21).
3. the calibration tool that probe location is used in a kind of spray angle of nozzle detection according to claim 2, which is characterized in that The small axis in upper end (21) is provided with anti-skidding annular knurl.
4. the calibration tool that probe location is used in a kind of spray angle of nozzle detection according to claim 1, which is characterized in that It further include the positioning seat (1) with verification plug (2) clearance fit, the positioning seat (1) is step hollow shaft structure, the positioning Seat (1) includes the big axis of coaxial positioning seat (11) and the small axis of positioning seat (12), and the big axis of positioning seat (11) is for limiting positioning seat (1) Axial movement, the center of positioning seat (1) offer for verification plug (2) lower end small axis (23) clearance fit circle Inner hole (13), circular inner hole (13) run through the big axis of positioning seat (11) and the small axis of positioning seat (12), and h=P+ δ, δ are the big axis of positioning seat (11) thickness.
5. the calibration tool that probe location is used in a kind of spray angle of nozzle detection according to claim 4, which is characterized in that The circular inner hole (13) is used to the radial fit gap of verification plug (2) be 0.01mm~0.05mm.
6. a kind of method of calibration of the spray angle of nozzle detection probe location based on calibration tool as claimed in claim 4, The following steps are included:
1) two probes are connect with dial gauge respectively, and to away from the movement of mutual direction, prevents itself and verification plug (2) phase Mutually interference;
2) the small axis of positioning seat (12) is inserted into the location hole of testing equipment, and makes the lower end of the big axis of positioning seat of positioning seat (1) Face (111) is fitted closely with testing equipment datum level (4);
3) circular inner hole (13) that will verify plug (2) insertion positioning seat (1), makes the big axis lower end surface (221) and positioning seat (1) upper surface (112) plane of the big axis of positioning seat (11) is bonded, and two grooves are rotated to front-rear direction, groove (24) are made It is placed in vertical direction with probe;
4) probe is mobile to two sides;
5) rotation verification plug (2), keeps the position of groove (24) opposite with probe, and the bottom center of groove (24) and probe needle Sharp face;
6) by two probes to gradually mobile to plug (2) are tested, if end of probe without hindrance can enter groove (24), probe Position is qualified;
If 7) end of probe has obstruction or cannot be introduced into groove (24), need to readjust probe high and low position then repetition step 1) verification of spraying probe~6) can be completed.
7. the method for calibration that probe location is used in a kind of spray angle of nozzle detection according to claim 6, which is characterized in that Before step 4), the reading adjustment for the dial gauge that two are connect with probe is consistent, and concrete operation method is, by two probes It moves towards, is allowed to touch verification plug (2), whether observation and two percentage meter readings that probe links are identical, if not identical, Percentage list index is adjusted, keeps the reading of two dial gauges equal.
CN201611170296.7A 2016-12-16 2016-12-16 A kind of spray angle of nozzle detection calibration tool and method of calibration of probe location Active CN106500572B (en)

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CN107144197A (en) * 2017-05-31 2017-09-08 南方中金环境股份有限公司 Stamping pump stator measures frock
CN109000541A (en) * 2018-09-05 2018-12-14 中国航发动力股份有限公司 A kind of micro hole part degree mouth diameter measuring device and method
CN109489612B (en) * 2018-11-19 2020-07-17 北京安达维尔机械维修技术有限公司 Airplane fuel nozzle spraying angle testing device and method
CN113252214B (en) * 2021-05-14 2023-11-17 中国航发湖南动力机械研究所 Total temperature probe calibration tool for outlet of combustion chamber test piece
CN113720277B (en) * 2021-08-25 2022-05-10 北京科荣达航空科技股份有限公司 Automatic measurement mechanism and automatic measurement method for fuel nozzle atomization angle
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Address after: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province

Patentee after: AECC AVIATION POWER CO., LTD.

Address before: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province

Patentee before: AVIC AVIATION ENGINE CORPORATION PLC