CN109367814A - Load diffuser vane degree of impairment checking tool and detection method - Google Patents

Abstract

The invention discloses load diffuser vane degree of impairment checking tool and detection methods, checking tool is equipped with curved rod, the diameter of the inner arc surface of curved rod is equal with the diameter of the circumference where the outermost end of blade, measuring rod and fixture block are fixed on inner arc surface, the mark post extended forward is equipped on the end face of the separate curved rod of measuring rod, the equal length of measuring rod and mark post total length after being added and blade, the spacing between fixture block and measuring rod are corresponding with the outer end thickness of blade；When being detected using detection instrument, the inner arc surface of curved rod is resisted against the outer end of blade, measuring rod extends along blade and is bonded with blade, the outer end of blade is between fixture block and measuring rod, it will test tool by fixture block to be limited on blade, by the relationship between blade and measuring rod and mark post, the wind erosion situation for the vane nose that need to be detected can accurately, be quickly judged.

Description

Load diffuser vane degree of impairment checking tool and detection method

Technical field

The present invention relates to aircraft maintenance technical fields, and in particular to a kind of load expansion of aviation auxiliary power unit (APU) Dissipate the degree of impairment detection instrument and a kind of detection method detected using the detection instrument of the blade of device.

Background technique

Auxiliary power unit (Auxiliary power unit) major function is that electricity is provided on ground and in the air for aircraft Source and gas source.131-9 type auxiliary power unit, both types are mounted on Boeing-737 series or Air Passenger A320 series aircraft Number aircraft be global fleet is largest at this stage two kinds of models, therefore have the auxiliary of a large amount of 131-9 series every year Power device will be sent to repair shop and be overhauled.

We have found that load patch diffuser (piece number: 3827054-1/-2) failure of auxiliary power unit in revision Rate is very high, needs to detect load diffuser vane in maintenance.It is recorded in producer's handbook to load diffuser vane Leading edge wind erosion, the repair method for injuring equivalent damage, as described in handbook: blade inlet edge wind erosion, which is no more than 1mm, to be continued to use, But if having inclined-plane occur need to blade polishing it is flat after be further continued for using；If wind erosion need to be by replacing leading edge blade more than 1mm Method repair.

As shown in Figure 1, load diffuser includes if that upper ring plate, lower Circular Plate and dry plate blade 21 (do not indicate in figure Upper ring plate and lower Circular Plate), blade 21 is arranged between upper ring plate and lower Circular Plate, and blade 21 is uniformly arranged by circumferencial direction The outermost end of cloth, blade 21 is located on same circumference.The narrow space between adjacent two blade in above structure, general measure Tool can not protrude into, and also can not just be detected, and with the naked eye be also to be difficult the size for judging that blade is eroded, and also be difficult to The blade for selecting correct repair method to fall wind erosion places under repair.For loading the detection of the blade of diffuser, producer does not have yet It is provided with special measuring tool, this just gives detection work belt to carry out huge trouble.Therefore expand in detection 131-9 type APU load When dissipating device, needs to invent a kind of quickly and accurately detection instrument to ensure our detection quality, and guide our repair Reason scheme.

Summary of the invention

First technical problem to be solved by this invention is just to provide a kind of load diffuser vane degree of impairment inspection Tool.

Second technical problem to be solved by this invention is just to provide a kind of utilize and loads diffuser vane degree of impairment The detection method that checking tool is detected.

The present invention can fast and accurate detection load diffuser vane degree of impairment.

Above-mentioned first technical problem is solved, The technical solution adopted by the invention is as follows:

A kind of load diffuser vane degree of impairment checking tool, load diffuser include upper ring plate, lower Circular Plate and If dry plate blade, blade be arranged between upper ring plate and lower Circular Plate, blade is uniformly arranged by circumferencial direction, blade it is outermost End is located on same circumference, and detection instrument is equipped with curved rod, the diameter of the inner arc surface of curved rod and the outermost end place of blade Circumference diameter it is equal, measuring rod and fixture block are fixed on inner arc surface, in the end face of the separate curved rod of measuring rod It is equipped with the mark post extended forward, the equal length of measuring rod and mark post total length after being added and blade, fixture block and measuring rod Between spacing it is corresponding to the outer end thickness of blade；When being detected using detection instrument, the inner arc surface of curved rod is resisted against leaf The outer end of piece, measuring rod extend along blade and are bonded with blade, and the outer end of blade passes through fixture block between fixture block and measuring rod The tool of will test is limited on blade.

Further, the height of mark post is less than the height of measuring rod, to form section.

Further, the length of mark post is 1mm.

Further, the cross section of measuring rod is rectangular, is equipped in the side for the plane of measuring rod being bonded with blade Angle.

Further, orchil is covered on the side of measuring rod.

Further, it is equipped on the exterior arc surface of curved rod for convenience of the handle of detection instrument is used.

Further, the radius of the inner arc surface of curved rod is 154.61mm, and the length of measuring rod is 83.14mm, detection The integral thickness of tool is 7.50mm.

Further, the height of mark post differs 0.5mm with the height of measuring rod.

Above-mentioned second technical problem is solved, The technical solution adopted by the invention is as follows:

A kind of detection method detected using the detection instrument, which comprises the following steps:

S1: measuring rod is inserted into the gap between the blade and adjacent blade that need to be detected from the outer rim side of load diffuser In, it is bonded measuring rod with the blade that need to be detected, at this point, the inner arc surface of curved rod is resisted against the outer end of blade, needs The outer end of the blade of detection will test tool by fixture block and be limited to the need that need to be detected detection between fixture block and measuring rod On blade；

S2: the blade that need to be detected from the inner ring side of load diffuser；Front end face when mark post and the blade that need to detect Up-front end face is concordant, can determine whether out that the leading edge for the blade that need to be detected is not damaged；When a part of mark post is from the leaf that need to be detected The leading edge of piece is exposed, and can determine whether out that the leading edge for the blade that need to be detected has slight damage to can also continue to using but if there is inclined-plane to go out Now need blade polishing it is flat after be further continued for using；When mark post is completed to can determine whether out to need to examine from the exposing of the leading edge for the blade that need to be detected The blade of survey must be placed under repair by way of replacing blade；

S3: circulation step S1 and S2, to complete the vaned detection of institute to load diffuser.

Further, detection instrument is checked before step S1, checks whether detection instrument has damage of colliding with Place.

Compared with prior art, the invention has the following advantages:

1, worker fast and accurate can judge blade injury by comparing the relationship between blade and measuring rod and mark post Situation need to be repaired using what mode if necessary to repair to quickly judge whether blade needs to repair, save the time, It improves work efficiency.

2, fault type can be accurately judged through the invention, it is more reliable more credible than individually detecting by an unaided eye, it helps It checks on the quality in promoting part, ensure that repair quality.

3, the present invention is practical, easy to operate, is easy to learn and use, facilitates popularization, has saved learning cost and time cost.

4, accurately judge Parts Breakdown degree of impairment through the invention, unnecessary part will be avoided to send outside to state and repaired Situation saves part and send and accomplishes this.

5, method of the invention can be generalized on all types of APU diffusers, it might even be possible to be generalized to engine expansion It dissipates on device.

Detailed description of the invention

Fig. 1 is the structural schematic diagram for loading diffuser；

Fig. 2 is schematic perspective view of the invention；

Fig. 3 is schematic view of the front view of the invention.

Appended drawing reference meaning in figure:

1- detection instrument；11- handle；12- curved rod；13- inner arc surface；14- mark post；The section 17-；18- measuring rod； 19- fixture block；2- loads diffuser；21- blade；23- circumference.

Specific embodiment

The present invention is further described below with reference to embodiment.

It is as shown in Figure 1 load diffuser 2 comprising if upper ring plate, lower Circular Plate and dry plate blade 21 (are not marked in figure Upper ring plate and lower Circular Plate are shown), blade 21 is arranged between upper ring plate and lower Circular Plate, and blade 21 is equal by circumferencial direction The outermost end of even arrangement, blade 21 is located on same circumference 23.

As shown in Figures 2 and 3 it is the load diffuser vane degree of impairment checking tool 1 of the present embodiment, is equipped with arc The diameter of bar 12, the inner arc surface 13 of curved rod 12 is equal with the diameter of circumference 23 where the outermost end of blade 21, curved rod Inner arc surface 13 as benchmark arc surface, measuring rod 18 and fixture block 19 are fixed on inner arc surface 13, in measuring rod The end face of 18 separate curved rod 12 be equipped with the mark post 14 that extends forward, measuring rod 18 and the total length after being added of mark post 14 with The equal length of blade 21, in this way, can be fast and accurate by the relationship compared between blade 21 and measuring rod 18 and mark post 14 Judge 21 degree of impairment of blade.Spacing between fixture block 19 and measuring rod 18 is corresponding with the outer end thickness of blade 21.Mark post 14 Length be depending on recording the size for judging blade wind erosion situation in producer's handbook.

When detecting using detection instrument 1, measuring rod 18 is inserted into the blade that need to be detected from the outer rim side of load diffuser 2 In gap between adjacent blade, the inner arc surface 13 of curved rod 12 is resisted against the outer end of blade 21, and measuring rod 18 is along need The blade 21 of detection extends and is bonded with the blade 21 that need to be detected, and the outer end for the blade 21 that need to be detected is located at fixture block 19 and measuring rod Between 18, tool 1 will test by fixture block 19 and be limited on the blade 21 that need to be detected, realize and be accurately positioned, to guarantee accurately Detection.It will test after tool 1 is limited on the blade 21 that need to be detected, load what the inner ring side observation of diffuser need to detect from Relationship between blade and measuring rod 18 and mark post 14 can accurately, quickly judge the wind erosion of 21 front end of blade that need to be detected Situation, to quickly, accurately select reasonable repair method.

In order to which mark post 14 is more easily observed, as shown in figure 3, the height of the mark post 14 of the present embodiment is less than measuring rod 18 Height, to form section 17.

In order to meet the explanation for the producer's handbook recorded in background technique, the Design of length of the mark post 14 of this implementation is 1mm. Certainly, the length of mark post 14 can be different according to the regulation of different producer's handbooks.

Sometimes it can remain some solder on the welding edge of 21 two sides of blade, cause measuring rod 18 complete with blade 21 Full fitting.In order to solve the problems, such as to be bonded completely, the cross section of the measuring rod 18 of the present embodiment is set as rectangular, so that measurement Bar 18 can be preferably flattened on blade 21, be equipped with chamfering (in figure in the side for the plane of measuring rod 18 being bonded with blade Chamfering is not shown), chamfering can make measuring rod avoid the solder for remaining in blade side.

Be covered with orchil on the side of measuring rod 18, to make warning alert effect, also can preferably with mark post area It separates, the present embodiment covers orchil in the plane for being bonded with blade 21 of measuring rod 18.Measuring rod 18 with The corresponding plane in section 17 is the plane for being bonded with blade 21, and the plane for being bonded with blade 21 is as datum level.

In order to it is more preferable, more easily use detection instrument, the present embodiment is equipped with handle on the exterior arc surface of curved rod 12 11, worker can preferably use detection instrument by holding handle 11.On handle 11, frosted processing can be also done, to increase Frictional force.

The plane towards measuring rod 18 of the plane and fixture block 19 towards fixture block 19 of the measuring rod 18 of the present embodiment is mutual In parallel.

In order to be more suitable for use in practice, it is preferred that the radius of the inner arc surface 13 of curved rod 12 is 154.61mm, is surveyed The length of gauge rod 18 is 83.14mm, and the integral thickness of detection instrument 1 is 7.50mm, the height of mark post 14 and the height of measuring rod 18 Degree difference 0.5mm, the radius of the exterior arc surface of curved rod 12 are 164.61mm, and the chamfering of 18 side of measuring rod is 0.5mm chamfering. The company with inner arc surface 13 with the connection side and fixture block 19 of the close fixture block 19 of the junction of inner arc surface 13 of measuring rod 18 Connect the close measuring rod 18 at place connection side linear distance be 10.10mm, i.e., measuring rod 18 as shown in Figure 3 and Inner arc The upper junction plate of the junction in face 13 and fixture block 19 are with the linear distance on the lower connection side of the junction of inner arc surface 13 10.10mm。

The detection instrument 1 of the present embodiment is made of stainless steel material.

The present embodiment also discloses a kind of detection method detected using the detection instrument, the detection method packet Include following steps:

S1: by measuring rod 18 between the blade and adjacent blade that the outer rim side insertion of load diffuser 2 need to detect In gap, it is bonded measuring rod 18 with the blade 21 that need to be detected, at this point, the inner arc surface 13 of curved rod 13 is resisted against leaf The outer end of piece 21, the outer end for the blade 21 that need to be detected will test tool 1 between fixture block 19 and measuring rod 18, through fixture block 19 It is limited on the blade 21 that need to be detected；

S2: the blade 21 that need to be detected from the inner ring side of load diffuser 2；When the front end face of mark post 14 with need to detect The end face of blade inlet edge is concordant, can determine whether out that the leading edge for the blade that need to be detected is not damaged；When a part of mark post 14 is from needing to examine The leading edge of the blade of survey is exposed, and can determine whether out that the leading edge for the blade that need to be detected has slight damage to can also continue to using but if having Inclined-plane occur need to blade polishing it is flat after be further continued for using；When mark post 14 is completed to sentence from the exposing of the leading edge for the blade that need to be detected The disconnected blade that need to be detected out must be placed under repair by way of replacing blade.

S3: circulation step S1 and S2, to complete the vaned detection of institute to load diffuser.

There is not fortuitous event to preferably guarantee to detect, first detection instrument 1 can be checked before step S1, Check whether detection instrument 1 has the place for damage of colliding with, the damage if detection instrument 1 is collided with just needs to change intact Detection instrument 1 is detected.

The above embodiment of the present invention is not limiting the scope of the present invention, and embodiments of the present invention are not limited to This, all this kind above content according to the present invention is not departing from this according to the ordinary technical knowledge and customary means of this field Modification, replacement or change under the premise of inventing above-mentioned basic fundamental thought, to other diversified forms that above structure of the present invention is made More, it should all fall within the scope and spirit of the invention.

Claims (10)

1. a kind of load diffuser vane degree of impairment checking tool, the load diffuser includes upper ring plate, lower Circular Plate If the blade is arranged between upper ring plate and lower Circular Plate, and the blade is uniformly arranged by circumferencial direction with dry plate blade, The outermost end of the blade is located on same circumference, it is characterised in that: the detection instrument is equipped with curved rod, the curved rod The diameter of inner arc surface is equal with the diameter of circumference where the outermost end of the blade, is fixed on the inner arc surface Measuring rod and fixture block are equipped with the mark post extended forward, the measurement on the end face far from the curved rod of the measuring rod The equal length of bar and mark post total length after being added and the blade, spacing and the leaf between the fixture block and measuring rod The outer end thickness of piece is corresponding；When being detected using the detection instrument, the inner arc surface of the curved rod is resisted against the blade Outer end, the measuring rod extends along the blade and is bonded with the blade, the outer end of the blade be located at the fixture block with Between measuring rod, tool will test by the fixture block and be limited on the blade.

2. load diffuser vane degree of impairment checking tool according to claim 1, it is characterised in that: the mark post Height is less than the height of the measuring rod, to form section.

3. load diffuser vane degree of impairment checking tool according to claim 1, it is characterised in that: the mark post Length is 1mm.

4. load diffuser vane degree of impairment checking tool according to claim 1, it is characterised in that: the measuring rod Cross section be it is rectangular, the measuring rod plane be bonded with the blade side equipped with chamfering.

5. load diffuser vane degree of impairment checking tool according to claim 1, it is characterised in that: the measuring rod Side on be covered with orchil.

6. load diffuser vane degree of impairment checking tool according to claim 1, it is characterised in that: in the arc The exterior arc surface of bar is equipped with to use the handle of detection instrument.

7. load diffuser vane degree of impairment checking tool according to claim 1, it is characterised in that: the curved rod The radius of inner arc surface be 154.61mm, the length of the measuring rod is 83.14mm, and the integral thickness of the detection instrument is 7.50mm。

8. load diffuser vane degree of impairment checking tool according to claim 2, it is characterised in that: the mark post Height differs 0.5mm with the height of the measuring rod.

9. a kind of detection method detected using detection instrument described in claim 1 to 8 any one, feature are existed In, comprising the following steps:

S1: by the measuring rod between the blade and adjacent blade that the outer rim side insertion of the load diffuser need to detect In gap, it is bonded the measuring rod with the blade that need to be detected, at this point, the inner arc surface of the curved rod is resisted against leaf The outer end of piece, the outer end for the blade that need to be detected will test tool between fixture block and measuring rod, through fixture block and be limited to and need to examine On the blade of the need detection of survey；

S2: the blade that need to be detected from the inner ring side of the load diffuser；When the front end face of the mark post with need to detect The end face of blade inlet edge is concordant, can determine whether out that the leading edge for the blade that need to be detected is not damaged；When the mark post a part from need The leading edge of the blade of detection is exposed, can determine whether out the leading edge for the blade that need to be detected have slight damage can also continue to using, but if Have inclined-plane occur need to blade polishing it is flat after be further continued for using；When the mark post complete from the leading edge for the blade that need to be detected expose, It can determine whether out that the blade that need to be detected must place under repair by way of replacing blade；

S3: circulation step S1 and S2, to complete the vaned detection of institute to load diffuser.

10. detection method according to claim 10, it is characterised in that: carried out before step S1 to the detection instrument It checks, checks whether the detection instrument has the place for damage of colliding with.