CN116007464A - Turbine outer ring size detection device and detection method - Google Patents

Abstract

The present disclosure relates to a turbine outer ring size detection device and a detection method, wherein the detection device includes a mounting member that extends entirely along a circumferential direction and includes: the accommodating part is provided with a first cavity which extends along the circumferential direction and is used for accommodating the circular arc plate, the radial outer end of the first cavity is provided with an opening, and the inner side wall of the first cavity is used for being matched with the inner side wall of the circular arc plate in the radial direction so as to radially position the turbine outer ring; the two limiting parts are respectively connected to two ends of the accommodating part, which are positioned at the axial direction of the opening, and extend outwards along the radial direction, a second cavity communicated with the first cavity to form the accommodating cavity is formed between the two limiting parts, and the inner side wall of one limiting part is matched with the outer side wall of the rib plate in the axial direction so as to axially position the outer ring of the turbine; the circumferential side end of the accommodation chamber is opened so that the turbine outer ring is fitted into the accommodation chamber from the circumferential side end of the accommodation member, and the mounting member is provided with a detection hole forming a passage for performing size detection of the turbine outer ring.

Description

Turbine outer ring size detection device and detection method

Technical Field

The disclosure relates to the technical field of measurement of aero-engine parts, in particular to a turbine outer ring size detection device and a detection method.

Background

The ceramic matrix composite turbine outer ring is successfully applied to an aeroengine, and is influenced by the characteristics of the ceramic matrix composite and the preparation and molding process. The turbine outer ring has the characteristics of poor preparation and forming precision and high processing difficulty, and is particularly important for the shape and size detection work of the turbine outer ring.

At present, the double-rib type turbine outer ring still has no corresponding dimension detection fixture and quick detection method, which results in longer dimension detection working time period, higher cost and lower efficiency, so that a device suitable for dimension detection of the double-rib type turbine outer ring is needed to be provided.

Disclosure of Invention

The invention provides a turbine outer ring size detection device and a detection method, which can conveniently and accurately detect the size of a turbine outer ring.

According to a first aspect of the present disclosure, there is provided a turbine outer ring size detection apparatus comprising:

the turbine outer loop includes circular arc board and two rib plates of connecting on the circular arc board outer wall, and two rib plates set up along the axial interval of circular arc board and all extend along the circumference of circular arc board, and turbine outer loop size detection device includes: a mounting member extending entirely in a circumferential direction and including:

the accommodating part is provided with a first cavity which extends along the circumferential direction and is used for accommodating the circular arc plate, the outer end of the first cavity along the radial direction is provided with an opening, and the inner side wall of the first cavity is used for being matched with the inner side wall of the circular arc plate in the radial direction so as to radially position the turbine outer ring; and

the two limiting parts are respectively connected to two ends of the accommodating part along the axial direction of the opening and extend outwards along the radial direction, a second cavity is formed between the two limiting parts, the second cavity is communicated with the first cavity to form an accommodating cavity, and the inner side wall of one limiting part along the axial direction is matched with the outer side wall of the rib plate so as to axially position the outer ring of the turbine;

the circumferential side end of the accommodating cavity is opened, so that the turbine outer ring is installed into the accommodating cavity from the circumferential side end of the mounting part, and the mounting part is provided with a detection hole for forming a channel for detecting the size of the turbine outer ring.

In some embodiments, the receptacle comprises:

a first plate extending in a circumferential direction;

the two second plates are respectively connected with two ends of the first plate along the axial direction and extend outwards along the radial direction; and

the two third plates are respectively connected to the end parts of the two second plates, which are close to each other, and extend oppositely along the axial direction, and an opening is formed between the two third plates;

wherein, two spacing portions are connected in the tip that two third boards are close to each other respectively.

In some embodiments, the turbine outer ring size detection apparatus further includes a hold-down assembly mounted on the two limit stops for applying a hold-down force to the turbine outer ring to limit radially outward movement of the turbine outer ring.

In some embodiments, the compression assembly includes:

the support piece is T-shaped, and two ends of the transverse part of the support piece are detachably connected with the two limiting parts respectively;

the pressing piece comprises a connecting part and a force application part connected to the radial inner end of the connecting part, the radial relative position between the top end of the connecting part and the vertical part of the support piece is adjustable, and the force application part adopts a bent elastic piece and is used for applying a pressing force to the outer ring of the turbine; and

and the adjusting piece is used for adjusting the radial position of the pressing piece relative to the mounting piece.

In some embodiments, the turbine outer ring size detection device further includes a plurality of groups of fasteners, a plurality of first through holes are circumferentially arranged on the rib plate at intervals, a plurality of second through holes are circumferentially arranged on the limiting portion at intervals, the plurality of second through holes are correspondingly arranged with the plurality of first through holes, and at least one second through hole on the limiting portion is a long circular hole extending along the radial direction.

In some embodiments, the turbine outer ring size detection device further includes a vernier caliper having two taper detection feet, the limiting portion is provided with a concave portion on an outer side face in an axial direction, the second through hole is provided at a bottom wall of the concave portion, and the fastener includes: the bolt penetrates through the first through hole and the second through hole, and the nut is positioned in the concave part and connected with the bolt;

the detection hole comprises a first taper hole arranged on the outer side face of the limiting part along the axial direction, the first taper hole is positioned on the same radial outer side of the second through hole, a second taper hole is arranged on the end face of the bolt, and the vernier caliper is used for detecting the radial position degree of the first through hole relative to the inner surface of the circular arc plate by inserting the two taper detection feet into the first taper hole and the second taper hole respectively.

In some embodiments, the detection device further comprises a dial indicator, the detection hole is provided with a plurality of, including:

and the plurality of third through holes are arranged on the limiting parts at intervals along the circumferential direction, extend along the axial direction and are used for detecting the relative position size and the parallelism of the two limiting parts through the dial indicator.

In some embodiments, the detection device further comprises a dial indicator, the detection hole is provided with a plurality of, including:

the fourth holes are arranged on the first plate at intervals along at least one direction of the circumferential direction and the axial direction, extend along the radial direction and are used for detecting the radial size and cylindricity of the radial inner surface of the arc plate through the dial indicator;

the plurality of fifth through holes are arranged on the second plate at intervals along the circumferential direction, extend along the axial direction and are used for detecting the position size and the flatness of the axial end face of the arc plate through the dial indicator; and/or

And the plurality of sixth through holes are arranged on the third plate at intervals along the circumferential direction, extend along the radial direction and are used for detecting the radial dimension and cylindricity of the radial outer surface of the arc plate through the dial indicator.

In some embodiments, the dial indicator comprises a meter body, a positioning rod and a measuring rod, wherein the positioning rod is connected to one end of the meter body, mounting holes for the measuring rod to pass through are formed in the meter body and the positioning rod, and the end part of the positioning rod is conical;

and the outer ends of the third through hole, the fourth through hole, the fifth through hole and/or the sixth through hole are provided with conical orifices for being matched with the end parts of the positioning rods to position the dial indicator in a state of being inserted into the detection holes through the measuring rods.

In some embodiments, the distance between the opposing surfaces of the two limiting portions is greater than the distance between the outer side surfaces of the two rib plates, and the distance between the opposing surfaces of the two second plates is greater than the axial dimension of the circular arc plates; in the state that the turbine outer ring is installed in the accommodation cavity, the surface of one rib plate contacts with the inner surface of corresponding spacing portion, and clearance is all had between the axial terminal surface of two second boards and circular arc board respectively.

According to a second aspect of the present disclosure, there is provided a detection method of the turbine outer ring size detection device according to the above embodiment, including:

loading the turbine outer ring into the accommodation chamber from a circumferential side end of the mounting member;

matching the inner side wall of the first cavity with the outer side wall of the circular arc plate to radially position the turbine outer ring; the inner side wall of one limiting part along the axial direction is matched with the outer side wall of the rib plate so as to axially position the turbine outer ring;

and performing size detection on the turbine outer ring through the detection hole.

In some embodiments, the rib plate is provided with a plurality of first through holes at intervals along the circumferential direction, the limit part is provided with a plurality of second through holes at intervals along the circumferential direction, the plurality of second through holes are arranged corresponding to the plurality of first through holes, and at least one second through hole on the limit part is a long round hole extending along the radial direction; after positioning the turbine outer ring, the detection method further comprises the following steps:

passing through the first through hole and the oblong hole by a group of fasteners and maintaining a radially adjustable state;

causing the hold-down assembly to apply a hold-down force to the turbine outer ring to limit radially outward movement of the turbine outer ring;

and sequentially penetrating other fasteners through the corresponding first through holes and the second through holes, and applying pretightening force to all the fasteners so as to fix the turbine outer ring and the two limiting parts.

The detection device of the embodiment of the disclosure is suitable for size detection of the double-rib plate type turbine outer ring, radial and axial positioning is respectively carried out on the turbine outer ring through the accommodating part and the limiting part, and the critical size of the turbine outer ring can be efficiently and accurately detected through the detection hole.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic installation view of some embodiments of a turbine outer ring size detection apparatus of the present disclosure for turbine outer ring detection.

FIG. 2 is a schematic structural view of some embodiments of the turbine outer ring of the present disclosure.

FIG. 3 is a schematic structural view of some embodiments of a turbine outer ring size detection apparatus of the present disclosure.

FIG. 4 is a side view of the turbine outer ring size detection apparatus shown in FIG. 3.

FIG. 5 is a schematic structural view of some embodiments of a compression assembly in a turbine outer ring size detection apparatus of the present disclosure.

Fig. 6 is a side view of fig. 5.

FIG. 7 is a schematic structural view of some embodiments of a fastener.

FIG. 8 is a schematic diagram of some embodiments of dial indicators in a turbine outer ring size detection apparatus.

Fig. 9 is a front view of fig. 1.

Fig. 10 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A in fig. 9.

Fig. 11 is a side view of fig. 1.

Fig. 12 is a B-B cross-sectional view of fig. 11.

Fig. 13 is an enlarged view of D in fig. 12.

Fig. 14 is a C-C cross-sectional view of fig. 11.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without carrying out the inventive task are within the scope of protection of this disclosure.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

In the description of the present disclosure, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present disclosure and to simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be configured and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

In the description of the present disclosure, it should be understood that the use of terms such as "first," "second," etc. for defining components is merely for convenience in distinguishing corresponding components, and the terms are not meant to be construed as limiting the scope of the present disclosure unless otherwise indicated.

The present disclosure provides a turbine outer ring size detection device, hereinafter referred to as a "detection device", and in order to more clearly describe the structure of the detection device, the structure of the turbine outer ring 1 shown in fig. 2 will be described first. In some embodiments, the turbine outer ring 1 includes a circular arc plate 11 and two rib plates 12 connected to the outer wall of the circular arc plate 11, where the two rib plates 12 are disposed at intervals along the axial direction of the circular arc plate 11 and each extend along the circumferential direction of the circular arc plate 11, and the extending lengths of the two rib plates 12 and the circular arc plate 11 may be consistent. The circular arc plate 11 is a plate with equal thickness, and the rib plate 12 is a plate with equal thickness. The multiple sections of turbine outer rings 1 are sequentially connected in the circumferential direction to form an integral turbine outer ring assembly. In the detection, the size of each turbine outer ring 1 can be detected separately.

In some embodiments, as shown in FIG. 3, the turbine outer ring size detection apparatus includes: a mounting member 2, the mounting member 2 extending entirely in the circumferential direction and including: a receiving portion 21 and two limiting portions 22. For example, the mounting member 2 may be made of a metal material. The mounting part 2 is a size detection tool, and is a tool fixture for auxiliary part size characteristic measurement and detection, so that the size detection work efficiency is improved.

The housing portion 21 extends in the circumferential direction, the housing portion 21 has a first cavity 211 extending in the circumferential direction for housing the circular arc plate 11, an outer end of the first cavity 211 in the radial direction has an opening, and an inner side wall of the first cavity 211 is for being fitted with an inner side wall of the circular arc plate 11 in the radial direction to radially position the turbine outer ring 1. The radially inner side wall of the first cavity 211 has a high radius dimension and cylindricity accuracy for radial positioning. For example, the radial dimension of the first cavity 211 may be larger than the thickness of the circular arc plate 11, and the inner sidewall of the circular arc plate 11 is matched with the inner sidewall of the first cavity 211, so that the circular arc plate 11 can be more easily installed into the first cavity 211, and the positioning accuracy is improved.

The two limiting parts 22 extend along the circumferential direction, are respectively connected to two ends of the accommodating part 21, which are positioned at the opening along the axial direction, extend outwards along the radial direction, a second cavity 221 is formed between the two limiting parts 22, the second cavity 221 and the first cavity 211 are communicated at the opening to form an accommodating cavity integrally, and one of the limiting parts 22 is matched with the outer side wall of the rib plate 12 along the axial direction so as to axially position the turbine outer ring 1. The two limiting parts 22 have high parallelism and relative position dimensional accuracy between the opposite surfaces.

For example, the limiting portions 22 may be limiting plates, the distance between the opposite surfaces of the two limiting portions 22 is greater than the distance between the surfaces of the two rib plates 12 away from each other, and only one of the limiting portions 22 contacts the rib plate 12, so that the two rib plates 12 can be more easily installed between the two limiting portions 22, and the positioning accuracy can be improved.

Wherein, hold the circumference side of chamber and open to make turbine outer loop 1 load into the chamber from the circumference side of mounting part 2, and be equipped with the detection hole on the mounting part 2, the detection hole can set up one or more according to the demand for form the passageway that carries out size detection to turbine outer loop 1. Higher position accuracy can be provided between different detection holes.

The detection device of this embodiment is suitable for size detection of the double-rib plate type turbine outer ring 1, radial and axial positioning is performed on the turbine outer ring 1 through the accommodating portion 21 and the limiting portion 22, respectively, and the critical size of the turbine outer ring 1 can be detected efficiently and accurately through the detection hole.

In some embodiments, as shown in fig. 3, the accommodating portion 21 includes: a first plate 212, two second plates 213 and two third plates 214.

Wherein the first plate 212 extends in a circumferential direction, for example, the first plate 212 may be an equal thickness plate. The two second plates 213 are respectively connected to both ends of the first plate 212 in the axial direction, and each extend radially outward. The two third plates 214 are respectively connected to the ends of the two second plates 213 that are close to each other, and extend opposite to each other in the axial direction, and an opening is formed between the two third plates 214. The two limiting portions 22 are respectively connected to the ends of the two third plates 214 that are close to each other. The two second plates 213 and the two third plates 214 also extend in the circumferential direction. The outer side wall of the first plate 212 is used to cooperate with the inner side wall of the circular arc plate 11 in radial direction to radially position the turbine outer ring 1.

The accommodating portion 21 of this embodiment can wrap the portion of the circular arc plate 11 located outside the limit portion 22, and the limit portion 22 is conveniently provided to reliably position and mount the turbine outer ring 1.

In some embodiments, as shown in fig. 1, the detection apparatus of the present disclosure further includes a pressing assembly 3 mounted on the two limiting portions 22 for applying a pressing force to the turbine outer ring 1 to limit the radially outward movement of the turbine outer ring 1. For example, the pressing assembly 3 is detachably mounted on the two limiting parts 22, which is more beneficial to maintenance of the mounting part 2 or the pressing assembly 3, and can be stored separately. For example, the hold-down assembly 3 may be provided at a circumferentially intermediate position of the mounting member 2 to provide a more uniform hold-down force.

This embodiment enables reliable position maintenance after positioning of the turbine outer ring 1 by providing the hold-down assembly 3, enables better contact of the radially inner surface of the circular arc plate 11 with the radially inner surface of the first cavity 211 for accurate detection of critical dimensions of the turbine outer ring 1, and enables random adjustment of the placement orientation of the detection device during detection.

In some embodiments, as shown in fig. 5 and 6, the compression assembly 3 includes: a support 31, a pressing member 32, and an adjusting member 33.

The supporting member 31 is T-shaped, and two ends of the transverse portion 311 of the supporting member 31 are detachably connected to the two limiting portions 22, respectively. For example, two hinge plates 23 are circumferentially arranged on the directional outer side wall of each limiting plate 22 at intervals, each hinge plate 23 is provided with a hinge hole 231, the end part of the transverse part 311 is located between the two hinge plates 23 on the same side and hinged through the first pin shaft 6, and the extending direction of the axis of the first pin shaft 6 is consistent with the tangential direction.

The pressing member 32 includes a connecting portion 321 and a biasing portion 322 connected to a radially inner end of the connecting portion 321, wherein a radial relative position between a tip end of the connecting portion 321 and the vertical portion 312 of the support member 31 is adjustable, and the biasing portion 322 is a curved elastic piece for applying a pressing force to the turbine outer ring 1. The adjustment member 33 is used to adjust the radial position of the pressing member 32 relative to the mounting member.

For example, the middle position of the vertical portion 312 is provided with a through-going avoiding portion 3121 along the tangential direction, the vertical portion 312 is provided with a hole, the connecting portion 321 is provided with a long round hole 313 extending along the radial direction, the second pin shaft 7 passes through the hole and the long round hole 313 to connect the pressing member 32 to the supporting member 31, the position of the pressing member 32 along the radial direction relative to the supporting member 31 is adjustable, and the extending direction of the axis of the second pin shaft 7 is consistent with the axial direction.

The force application portion 322 may be formed by bending a metal sheet structure, as shown in fig. 6, the force application portion 322 may include two extending sections 3221 and two bending sections 3222, the two extending sections 3221 extend from the connecting portion 321 to two circumferential sides respectively, the two bending sections 3222 are connected to ends of the two extending sections 3221 respectively, and each of the two bending sections is in contact with a radial outer side surface of the circular arc plate 11, and a preset interval is provided between the two extending sections 3221 and the radial outer side surface of the circular arc plate 11.

The adjusting member 33 may be an adjusting screw, and the transverse portion 311 is provided with a hole along the radial outer surface, and the adjusting member 33 abuts against the connecting portion 321 of the pressing member 32 after passing through the hole, and by adjusting the adjusting member 33, the pressing force of the force applying portion 322 to the circular arc plate 11 can be adjusted, so that the turbine outer ring 1 is reliably fixed.

The pressing assembly 3 of this embodiment can move the force application portion 322 radially outward by adjusting the adjusting member 33 before the turbine outer ring 1 needs to be detected, so that the distance between the most protruding position of the inner surface of the force application portion 322 and the outer side surface of the circular arc plate 11 is larger than the thickness of the circular arc plate 11, so that the turbine outer ring 1 can be conveniently installed in the accommodating cavity; after positioning and fixing the turbine outer ring 1, the urging portion 322 is moved radially inward by adjusting the adjusting piece 33 to apply a pressing force to the circular arc plate 11, maintaining the relative positional relationship between the turbine outer ring 1 and the mounting member 2, to improve the accuracy of the size detection of the turbine outer ring 1, and to improve the detection efficiency and shorten the detection period.

In particular, for the turbine outer ring 1 formed by the ceramic matrix composite, the embodiment of the disclosure can accurately detect the critical dimension due to poor preparation and molding precision and high processing difficulty, and has important significance for improving the processing precision of parts. The ceramic matrix composite material is a composite material compounded by a ceramic matrix and various fibers, generally has the characteristics of high temperature resistance, high strength and modulus, low density, strong corrosion resistance, difficult processing and the like, and has wide application prospect on aerospace hot end structural components.

In some embodiments, as shown in fig. 1 to 4, the detection device further includes a plurality of groups of fasteners 4, a plurality of first through holes 121 are circumferentially arranged on the rib plate 12 at intervals, a plurality of second through holes 222 are circumferentially arranged on the limiting portion 22 at intervals, the plurality of second through holes 222 are correspondingly arranged with the plurality of first through holes 121, at least one second through hole 222 on the limiting portion 22 is an oblong hole extending in a radial direction, and the fasteners 4 pass through the corresponding first through holes 121 and second through holes 222 to fix the limiting portion 22 and the rib plate 12.

For example, two or more first through holes 121 are circumferentially spaced on the rib 12, and correspondingly, two or more second through holes 222 are circumferentially spaced on the limiting portion 22, where one of the second through holes 222 may be configured as a oblong hole by the same limiting portion 22.

This embodiment can fix the turbine outer ring 1 to the mounting member 2 by the plurality of sets of fasteners 4 after positioning the turbine outer ring 1, and can also adjust the radial mounting position of the turbine outer ring 1 by the oblong holes so that the radial inner surface of the circular arc plate 11 is better contacted with the radial inner surface of the first cavity 211, increasing the radial positioning accuracy of the turbine outer ring 1, so as to improve the accuracy of the size detection of the turbine outer ring 1.

Specifically, after positioning the turbine outer ring 1, first, a radially adjustable state is maintained by passing a set of fasteners 4 through the first through hole 121 and the oblong hole; next, the packing assembly 3 is caused to apply a packing force to the turbine outer ring 1 to restrict the turbine outer ring 1 from moving radially outward, while the radially inner surface of the circular arc plate 11 is brought into reliable contact with the radially inner surface of the first chamber 211; then, the other fasteners 4 are sequentially passed through the corresponding first through holes 121 and second through holes 222, and a pre-tightening force is applied to all the fasteners 4 to fix the turbine outer ring 1 with the two limit portions 22.

In some embodiments, as shown in fig. 7, 12 and 13, the detecting device further includes a vernier caliper having two conical detecting feet, the limiting portion 22 is provided with a concave portion 223 on an outer side surface along an axial direction, and the second through hole 222 is provided at a bottom wall of the concave portion 223; the fastener 4 includes: the bolt 41 passes through the first through hole 121 and the second through hole 222, and the nut 42 is located in the recess 223 and is connected with the bolt 41.

The detection hole comprises a first taper hole 224 arranged on the outer side surface of the limiting part 22 along the axial direction, the first taper hole 224 is positioned on the outer side of the second through hole 222 in the same radial direction, and the radial inner surface of the first cavity 211 of the first taper hole 224 has higher position accuracy. The end face of the bolt 41 is provided with a second taper hole 411, and the vernier caliper is used for detecting the radial position degree of the first through hole 121 relative to the inner surface of the circular arc plate 11 by inserting two taper detection feet into the first taper hole 224 and the second taper hole 411 respectively.

This embodiment can make the tip of bolt 41 and spacing portion 22 along axial lateral wall parallel and level through setting up recess 223 to make slide caliper detect with the angle of placement that prefers, moreover, through setting up the taper hole and fixing a position the detection foot of slide caliper, can prevent that slide caliper from rocking when measuring, can improve detection accuracy.

When the mounting member 2 is designed, the radial inner surface of the first cavity 211 is a positioning surface, and the radial position accuracy of the first tapered hole 224 with respect to the radial inner surface of the first cavity 211 can be ensured, so that the radial position of the first through hole 121 with respect to the inner surface of the circular arc plate 11 can be calculated after the distance between the first tapered hole 224 and the second tapered hole 411 is measured. Each of the second through holes 222 is provided with a corresponding one of the first tapered holes 224 so as to obtain radial positions of all the first through holes 121 with respect to the inner surface of the circular arc plate 11.

As shown in fig. 7, the bolt 41 includes a screw 411 and a tapered bolt head 412, and the nut 42 includes a nut body 421 and a boss 422. The bolt head 412 abuts against the hole position of the first through hole 121, and the boss 422 abuts against the bottom surface of the concave portion 223, so that a larger contact area between the nut 42 and the limiting portion 22 is realized, and connection reliability is improved.

In some embodiments, as shown in fig. 3, the detection device further includes a dial indicator 5, where a plurality of detection holes are provided, including: the third through holes 225 are circumferentially spaced on the limiting portions 22, and the third through holes 225 extend axially for detecting relative position dimensions and parallelism of the two limiting portions 22 by the dial indicator 5.

In this embodiment, a plurality of third through holes 225 are circumferentially provided at intervals on each of the limiting portions 22, and the dial indicator 5 sequentially passes through the plurality of third through holes 225 to detect the position dimensions of the respective axially outer sides of the rib 12, so that the relative position dimensions and parallelism of the two limiting portions 22 can be detected.

In some embodiments, the detection aperture is provided in plurality, including: a plurality of fourth through holes 2121, a plurality of fifth through holes 2131 and/or a plurality of sixth through holes 2141.

A plurality of fourth through holes 2121 are provided on the first plate 212 at intervals in at least one of the circumferential direction and the axial direction, and the fourth through holes 2121 extend in the radial direction for detecting the radial dimension and cylindricity of the radially inner surface of the circular arc plate 11 by dial indicator 5. For example, as shown in fig. 3, a plurality of sets of fourth through holes 2121 are axially spaced apart on the first plate 212, and each set of fourth through holes 2121 includes a plurality of fourth through holes 2121 circumferentially spaced apart.

In this embodiment, a plurality of fourth through holes 2121 are provided in each region of the first plate 212, and the dial gauge 5 is sequentially passed through the plurality of fourth through holes 2121 to detect the position dimensions of the radially inner surface of the circular arc plate 11, whereby the radial dimension and cylindricity of the radially inner surface of the circular arc plate 11 can be obtained.

A plurality of fifth through holes 2131 are provided on the second plate 213 at intervals in the circumferential direction, and the fifth through holes 2131 extend in the axial direction for detecting the position size and flatness of the axial end face of the circular arc plate 11 by the dial indicator 5.

In this embodiment, the position dimensions and flatness of the axial end face of the arc plate 11 can be obtained by providing the plurality of fifth through holes 2131 in the second plate 213 at intervals in the circumferential direction, and allowing the dial gauge 5 to sequentially detect the position dimensions of the axial end face of the arc plate 11 through the plurality of fifth through holes 2131.

A plurality of sixth through holes 2141 are provided on the third plate 214 at intervals in the circumferential direction, and the sixth through holes 2141 extend in the radial direction for detecting the radial dimension and cylindricity of the radially outer surface of the circular arc plate 11 by the dial indicator 5.

In this embodiment, a plurality of sixth through holes 2141 are provided in each region of the third plate 214, and the dial gauge 5 sequentially passes through the plurality of sixth through holes 2141 to detect the position dimensions of the radially outer surface of the circular arc plate 11, whereby the radius dimensions and cylindricity of the radially outer surface of the circular arc plate 11 can be obtained.

In some embodiments, as shown in fig. 8 and 14, the detection device further includes a dial indicator 5, including a gauge body 51, a positioning rod 52 and a measuring rod 53, where the positioning rod 52 is connected to one end of the gauge body 51, mounting holes 511 through which the measuring rod 53 passes are provided in the gauge body 51 and the positioning rod 52, and the end of the positioning rod 52 is tapered. The outer ends of the third through hole 225, the fourth through hole 2121, the fifth through hole 2131 and/or the sixth through hole 2141 are provided with tapered apertures for positioning the dial indicator 5 in cooperation with the end portions of the positioning rod 52 in a state of being inserted into the detection holes through the measuring rod 53.

According to the embodiment, when the dial indicator 5 is used for detection, the conical orifice of the detection hole is used for positioning, so that the dial indicator 5 is kept in a stable detection state, and the accuracy of the size detection of the turbine outer ring 1 is improved.

In some embodiments, as shown in fig. 12, the distance between the opposite surfaces of the two limiting portions 22 is greater than the distance between the outer side surfaces of the two rib plates 12, and the distance between the opposite surfaces of the two second plates 213 is greater than the axial dimension of the circular arc plate 11; in a state where the turbine outer ring 1 is mounted in the housing chamber, the outer surface of one of the rib plates 12 is in contact with the inner surface of the corresponding stopper portion 22, and a gap is provided between the inner surface of each of the two second plates 213 and the axial end face of the circular arc plate 11.

In this embodiment, the turbine outer ring 1 is axially positioned only by the inner surface of the limiting portion 22, so that over-positioning is avoided, and the axial positioning accuracy of the turbine outer ring 1 can be improved.

According to the detection device disclosed by the embodiment of the invention, the vernier caliper and the dial indicator 5 are matched, so that the rapid and reliable measurement of the installation and positioning critical dimension and the matching profile dimension of the double-rib plate type turbine outer ring 1 is realized, whether the shape dimension, the position degree and the profile precision of the turbine outer ring 1 meet the design requirements can be rapidly and accurately judged based on the linear dimension measurement data, the efficiency of the dimension detection work of the turbine outer ring 1 is obviously improved, and the cost is reduced.

The following describes a method of using the detection device of the present disclosure by way of specific examples.

The critical dimensional and profile accuracy requirements that the turbine outer ring 1 needs to meet mainly include: the radial dimension and the profile cylindricity of the radially inner surface of the circular arc plate 11, the position degree of the first through hole 211 with respect to the radially inner surface of the circular arc plate 11, the radial dimension and the profile cylindricity of the radially outer surface of the circular arc plate 11, the position dimensions of the outer side surfaces of the two rib plates 12 and the parallelism with each other.

During the installation, as shown in fig. 1, the regulating member 33 is first screwed upward to lift the pressing member 32 such that the minimum distance between the lower surface of the urging portion 322 and the radially inner surface of the first cavity 211 is larger than the thickness value of the circular arc plate 11 of the turbine outer ring 1. Then, the turbine outer ring 1 is brought into the accommodation chamber from the circumferential end portion thereof such that the radially inner surface of the circular arc plate 11 is abutted against the radially inner surface of the first chamber 211, such that the axially outer surface of the one side rib 12 is abutted against the axially inner surface of the corresponding side stopper 22, and the relative positional fixation between the turbine outer ring 1 and the mounting member 2 in the radial and axial directions is achieved.

Next, the circumferential position of the turbine outer ring 1 with respect to the mounting member 2 is adjusted so that one bolt 41 can be sequentially passed through the first through hole 121 and the oblong second through hole 222 on the side of the abutted stopper 22 as shown in fig. 12, and then the nut 42 is placed in the recess 223 and mounted and screwed with the bolt 41. By applying the necessary pre-tightening force, the tapered bevel on the bolt head 412 is guaranteed to be in full contact with the inside edge of the first through hole 121, while the bottom surface of the recess 223 of the boss 422 on the nut 42 is guaranteed to be in contact. Since the width dimension of the oblong second through hole 22 is slightly larger than the diameter value of the polish rod part of the positioning bolt 41, the two parts can realize small clearance fit positioning in the circumferential direction, and further, the limiting fixation in the circumferential direction between the turbine outer ring 1 and the mounting part 2 can be realized, so that the complete position fixation between the turbine outer ring 1 and the mounting part 2 is completed. Finally, the adjusting member 33 is screwed in, and the pressing member 32 is pressed downward, so that the force application portion 322 contacts the radially outer surface of the circular arc plate 11 and is elastically deformed, and a downward pressing force is generated on the turbine outer ring 1, thereby maintaining the relative positional relationship between the turbine outer ring 1 and the mounting member 2.

The remaining bolts 41 are then sequentially passed through the remaining first through holes 121 and the corresponding second through holes 222, and then the nuts 42 are placed in the recesses 223 and are mounted and screwed with each bolt 41, also ensuring that the tapered inclined surfaces on the bolt heads 412 are in full contact with the inner edges of the first through holes 121, while ensuring that the bottom surfaces of the recesses 223 of the bosses 422 on the nuts 42 are in contact. There is a large clearance fit between the bolt 41 and the second through hole 222. The positioning and assembly of the turbine outer ring 1 and the detection device is thus completed. The above structural feature and installation requirements ensure that the positioning bolt 41 axially coincides with the axis of the first through hole 121 and that the central bit line of the first tapered hole 224 coincides with the axis of the first through hole 121. In the installed state, the positions of the first tapered hole 224 and the second tapered hole 411 are substantially identical in the axial direction, so that the radial distance between the two is convenient to measure.

After the installation, the size detection of the turbine outer ring 1 is started by using the mounting part 2 as a measurement standard by using a vernier caliper (not shown) with conical measurement feet and a digital display dial gauge with a conical positioning rod end.

First, the taper measuring pin of the vernier caliper is put in the first taper hole 224 and the second taper hole 411 of the same group, the radial distance between them is measured, and the position degree detection of the first through hole 121 with respect to the radial inner surface of the circular arc plate 11 can be completed by comparing with the design target size calculation. Then, as shown in fig. 14, using the dial indicator 5, with reference to a plurality of measuring holes vertically inward of the surface of the mounting member 2, distances between different position points on different outer surfaces of the turbine outer ring 1 with respect to the position measuring holes are measured, and then by performing grouping statistical calculation on the measured distance values, position dimensions and profile accuracy of the different outer surfaces of the turbine outer ring 1 can be detected based on the calculation results, including: the radial dimension and cylindricity of the radially inner and outer surfaces of the circular arc plate 1, the position dimension and planarity of the axial end face of the circular arc plate 1, the relative position dimension and parallelism between the surfaces of the two rib plates 12 that are distant from each other.

Wherein, the outer ends of the third through hole 225, the fourth through hole 2121, the fifth through hole 2131 and/or the sixth through hole 2141 are provided with conical orifices for matching with the conical surface of the end of the positioning rod 52 so as to position the dial indicator 5, and the rear end of the measuring rod 53 passes through each measuring hole to abut against the surface of the turbine outer ring 1. During operation, dial indicator 5 is first opened and zeroed, the tapered surface of the end of positioning rod 52 is abutted against the tapered orifice of the measuring bore, measuring rod 53 is then pushed inward and the front end is abutted against the outer surface of turbine outer ring 1, and the reading is taken. And finally, carrying out grouping calculation on distance values measured through a plurality of measuring holes, carrying out calculation and evaluation on position sizes and profile precision of different outer surfaces of the turbine outer ring 1, and judging whether the design requirements are met.

Next, the present disclosure provides a method for detecting a turbine outer ring size according to the above embodiments, including, in some embodiments:

step 110, loading the turbine outer ring 1 into the accommodating cavity from the circumferential side end of the mounting part 2;

step 120, matching the inner side wall of the first cavity 211 with the outer side wall of the circular arc plate 11 to radially position the turbine outer ring 1; and the inner side wall of one limit part 22 along the axial direction is matched with the outer side wall of the rib plate 12 so as to axially position the turbine outer ring 1;

step 130, performing size detection on the turbine outer ring 1 through the detection hole.

Steps 110 to 130 are sequentially performed. The detection method of the embodiment is suitable for size detection of the double-rib plate type turbine outer ring 1, radial and axial positioning is carried out on the turbine outer ring 1 through the accommodating part 21 and the limiting part 22 respectively, and the critical size of the turbine outer ring 1 can be detected efficiently and accurately through the detection holes.

In some embodiments, the rib 12 is provided with a plurality of first through holes 121 at intervals along the circumferential direction, the limit part 22 is provided with a plurality of second through holes 222 at intervals along the circumferential direction, the plurality of second through holes 222 are arranged corresponding to the plurality of first through holes 121, and at least one second through hole 222 on the limit part 22 is an oblong hole extending along the radial direction; after positioning the turbine outer ring 1 in step 120, the detection method further comprises:

step 122, passing through the first through hole 121 and the oblong hole by a group of fasteners 4 and maintaining the radially adjustable state;

step 124, enabling the compressing assembly 3 to apply compressing force to the turbine outer ring 1 so as to limit the turbine outer ring 1 to move outwards along the radial direction;

step 126, other fasteners 4 sequentially pass through the corresponding first through holes 121 and the second through holes 222, and apply a pre-tightening force to all fasteners 4 to fix the turbine outer ring 1 with the two limiting portions 22.

Wherein steps 122, 124 and 126 are performed sequentially. This embodiment can fix the turbine outer ring 1 to the mounting member 2 by the plurality of sets of fasteners 4 after positioning the turbine outer ring 1, and can also adjust the radial mounting position by the oblong holes so that the radial inner surface of the circular arc plate 11 is better in contact fit with the radial inner surface of the first cavity 211, increasing the radial positioning accuracy of the turbine outer ring 1, so as to improve the accuracy of the size detection of the turbine outer ring 1.

The foregoing description of the exemplary embodiments of the present disclosure is not intended to limit the present disclosure, but rather, any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.

Claims (12)

1. Turbine outer ring size detection device, turbine outer ring (1) include circular arc board (11) and two are connected floor (12) on circular arc board (11) outer wall, two floor (12) are followed the axial interval setting of circular arc board (11) and all follow the circumference extension of circular arc board (11), its characterized in that, turbine outer ring size detection device includes: -a mounting part (2), the mounting part (2) extending entirely along the circumferential direction and comprising:

-a housing (21) having a first cavity (211) extending in a circumferential direction for housing the circular arc plate (11), the first cavity (211) having an opening at a radially outer end thereof, in which radial direction an inner side wall of the first cavity (211) is adapted to cooperate with an inner side wall of the circular arc plate (11) for radially positioning the turbine outer ring (1); and

two limiting parts (22) are respectively connected to two ends of the accommodating part (21) along the axial direction of the opening and extend outwards along the radial direction, a second cavity (221) is formed between the two limiting parts (22), the second cavity (221) is communicated with the first cavity (211) to form an accommodating cavity, and the inner side wall of one limiting part (22) along the axial direction is matched with the outer side wall of the rib plate (12) to axially position the turbine outer ring (1);

the circumferential side end of the accommodating cavity is open, so that the turbine outer ring (1) is installed into the accommodating cavity from the circumferential side end of the mounting component (2), and a detection hole is formed in the mounting component (2) and used for forming a channel for detecting the size of the turbine outer ring (1).

2. Turbine outer ring size detection device according to claim 1, characterized in that the housing (21) comprises:

a first plate (212) extending in the circumferential direction;

two second plates (213) respectively connected to both ends of the first plate (212) in the axial direction, and each extending outward in the radial direction; and

two third plates (214) respectively connected to the ends of the two second plates (213) that are close to each other and extend opposite to each other in the axial direction, the openings being formed between the two third plates (214);

wherein the two limiting parts (22) are respectively connected to the end parts of the two third plates (214) which are close to each other.

3. The turbine outer ring size detection device according to claim 1, further comprising a pressing assembly (3) mounted on the two limit portions (22) for applying a pressing force to the turbine outer ring (1) to restrict the turbine outer ring (1) from moving radially outward.

4. A turbine outer ring size detection apparatus according to claim 3, wherein the hold-down assembly (3) comprises:

the support piece (31) is T-shaped, and two ends of a transverse part (311) of the support piece (31) are detachably connected with the two limiting parts (22) respectively;

the pressing piece (32) comprises a connecting part (321) and a force application part (322) connected to the radial inner end of the connecting part (321), the radial relative position between the top end of the connecting part (321) and the vertical part (312) of the supporting piece (31) is adjustable, and the force application part (322) adopts a bent elastic sheet and is used for applying a pressing force to the turbine outer ring (1); and

and an adjusting member (33) for adjusting the radial position of the pressing member (32) with respect to the mounting member.

5. The turbine outer ring size detection device according to any one of claims 1 to 4, further comprising a plurality of sets of fasteners (4), wherein a plurality of first through holes (121) are circumferentially arranged on the rib plate (12) at intervals, a plurality of second through holes (222) are circumferentially arranged on the limiting portion (22) at intervals, the plurality of second through holes (222) are correspondingly arranged with the plurality of first through holes (121), and at least one of the second through holes (222) on the limiting portion (22) is a slotted hole extending in the radial direction.

6. The turbine outer ring size detection device according to claim 5, further comprising a vernier caliper having two taper detection legs, wherein the stopper portion (22) is provided with a recessed portion (223) on an axially outer side face thereof, the second through hole (222) is provided in a bottom wall of the recessed portion (223), and the fastener (4) comprises: a bolt (41) and a nut (42), the bolt (41) passing through the first through hole (121) and the second through hole (222), the nut (42) being located within the recess (223) and connected with the bolt (41);

the detection hole is including establishing first taper hole (224) on spacing portion (22) along axial lateral surface, first taper hole (224) are located second through-hole (222) same radial outside, be equipped with second taper hole (411) on the terminal surface of bolt (41), slide caliper is used for inserting respectively through two toper detection feet first taper hole (224) with second taper hole (411) detect first through-hole (121) for radial position degree of circular arc board (11) internal surface.

7. Turbine outer ring size detection device according to claim 1, further comprising a dial gauge (5), the detection holes being provided in plurality, comprising:

and the third through holes (225) are arranged on the limiting parts (22) at intervals along the circumferential direction, and the third through holes (225) extend along the axial direction and are used for detecting the relative position sizes and the parallelism of the two limiting parts (22) through the dial indicator (5).

8. Turbine outer ring size detection device according to claim 2, further comprising a dial gauge (5), the detection holes being provided in plurality, comprising:

a plurality of fourth through holes (2121) which are arranged on the first plate (212) at intervals along at least one direction of the circumferential direction and the axial direction, wherein the fourth through holes (2121) extend along the radial direction and are used for detecting the radial dimension and cylindricity of the radial inner surface of the circular arc plate (11) through the dial indicator (5);

a plurality of fifth through holes (2131) which are circumferentially arranged on the second plate (213) at intervals, and the fifth through holes (2131) extend in the axial direction and are used for detecting the position size and the flatness of the axial end face of the arc plate (11) through the dial indicator (5); and/or

The plurality of sixth through holes (2141) are circumferentially arranged on the third plate (214) at intervals, and the sixth through holes (2141) extend in the radial direction and are used for detecting the radial dimension and cylindricity of the radial outer surface of the arc plate (11) through the dial indicator (5).

9. The turbine outer ring size detection device according to claim 7 or 8, wherein the dial indicator (5) comprises a meter body (51), a positioning rod (52) and a measuring rod (53), the positioning rod (52) is connected to one end of the meter body (51), mounting holes (511) for the measuring rod (53) to pass through are formed in the meter body (51) and the positioning rod (52), and the end part of the positioning rod (52) is conical;

the outer ends of the third through hole (225), the fourth through hole (2121), the fifth through hole (2131) and/or the sixth through hole (2141) are provided with conical orifices for matching with the end parts of the positioning rods (52) to position the dial indicator (5) in a state of being inserted into the detection holes through the measuring rods (53).

10. Turbine outer ring size detection device according to claim 2, characterized in that the distance between the opposite surfaces of the two limit parts (22) is larger than the distance between the outer side surfaces of the two rib plates (12), the distance between the opposite surfaces of the two second plates (213) is larger than the axial dimension of the circular arc plate (11); in a state that the turbine outer ring (1) is mounted in the accommodating cavity, the outer surface of one rib plate (12) is in contact with the inner surface of the corresponding limiting part (22), and gaps are formed between the inner surfaces of the two second plates (213) and the axial end surfaces of the circular arc plates (11).

11. A detection method based on the turbine outer ring size detection apparatus according to any one of claims 1 to 10, comprising:

loading the turbine outer ring (1) into the accommodation chamber from a circumferential side end of the mounting member (2);

-mating the inner side wall of the first cavity (211) with the outer side wall of the circular arc plate (11) to radially position the turbine outer ring (1); and the inner side wall of one limit part (22) along the axial direction is matched with the outer side wall of the rib plate (12) so as to axially position the turbine outer ring (1);

and performing size detection on the turbine outer ring (1) through the detection holes.

12. The detection method according to claim 11, wherein a plurality of first through holes (121) are circumferentially arranged on the rib plate (12) at intervals, a plurality of second through holes (222) are circumferentially arranged on the limit portion (22) at intervals, the plurality of second through holes (222) are correspondingly arranged with the plurality of first through holes (121), and at least one second through hole (222) on the limit portion (22) is a slotted hole extending along the radial direction; after positioning the turbine outer ring (1), the detection method further comprises:

passing through said first through hole (121) and oblong hole by means of a set of fasteners (4) and maintaining a radially adjustable condition;

-causing the compression assembly (3) to apply a compression force to the turbine outer ring (1) to limit radially outward movement of the turbine outer ring (1);

and sequentially penetrating other fasteners (4) through the corresponding first through holes (121) and the second through holes (222), and applying pretightening force to all the fasteners (4) so as to fix the turbine outer ring (1) and the two limiting parts (22).

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