Turbine outer ring size detection device and detection method

Abstract

The present disclosure relates to a turbine outer ring size detection device and a detection method, wherein the detection device comprises a mounting component which extends in the circumferential direction as a whole and comprises: a receiving part having a first cavity extending in the circumferential direction and used for accommodating a circular arc plate, a radially outer end of the first cavity having an opening, and an inner side wall of the first cavity being used for cooperating with an inner side wall of the circular arc plate in the radial direction to position the turbine outer ring in the radial direction; and two limiting parts respectively connected to the receiving part at two ends of the opening in the axial direction and extending outward in the radial direction, the two limiting parts forming a second cavity which is in communication with the first cavity to form a receiving cavity, and an inner side wall of one of the two limiting parts cooperating with an outer side wall of the rib plate in the axial direction to position the turbine outer ring in the axial direction; a circumferential side end of the receiving cavity being open to allow the turbine outer ring to be loaded into the receiving cavity from a circumferential side end of the receiving component, and the mounting component being provided with a detection hole which forms a channel for size detection of the turbine outer ring.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of aero-engine part measurement, in particular to a turbine outer ring size detection device and method. BACKGROUND

[0002] The ceramic matrix composite turbine outer ring has been successfully applied to aero-engines, and is affected by the characteristics and preparation process of the ceramic matrix composite. Such turbine outer ring has the characteristics of poor preparation precision and high processing difficulty, which makes the shape and size detection of the turbine outer ring particularly important.

[0003] At present, there is still no corresponding size detection tool fixture and rapid detection method for the double-rib plate type turbine outer ring, which leads to a long time period, high cost and low efficiency of size detection. Therefore, it is urgent to propose a device suitable for size detection of the double-rib plate type turbine outer ring. SUMMARY

[0004] The present disclosure provides a turbine outer ring size detection device and method, which can conveniently and accurately detect the size of the turbine outer ring.

[0005] According to a first aspect of the present disclosure, a turbine outer ring size detection device is provided, comprising:

[0006] The turbine outer ring comprises a circular arc plate and two rib plates connected to the outer wall of the circular arc plate, the two rib plates are arranged in an axial direction and extend along a circumferential direction of the circular arc plate, and the turbine outer ring size detection device comprises a mounting component, which extends along the circumferential direction and comprises:

[0007] a receiving portion having a first cavity extending along the circumferential direction and used for accommodating the circular arc plate, an outer end of the first cavity in the radial direction having an opening, and an inner side wall of the first cavity in the radial direction being used for cooperating with an inner side wall of the circular arc plate to position the turbine outer ring in the radial direction; and

[0008] two limiting portions respectively connected to the receiving portion at two ends of the opening in the axial direction and extending outward in the radial direction, a second cavity being formed between the two limiting portions, the second cavity being in communication with the first cavity to form an accommodating cavity, and an inner side wall of one of the limiting portions in the axial direction cooperating with an outer side wall of the rib plate to position the turbine outer ring in the axial direction;

[0009] wherein a circumferential side end of the accommodating cavity is open to allow the turbine outer ring to be loaded into the accommodating cavity from the circumferential side end of the mounting component, and a detection hole is provided on the mounting component to form a channel for size detection of the turbine outer ring.

[0010] In some embodiments, the receiving portion comprises:

[0011] a first plate extending along the circumferential direction;

[0012] two second plates respectively connected to the two ends of the first plate along the axial direction and extending radially outward; and

[0013] two third plates respectively connected to the ends of the two second plates close to each other and extending oppositely along the axial direction, and an opening being formed between the two third plates;

[0014] wherein the two limiting portions are respectively connected to the ends of the two third plates close to each other.

[0015] In some embodiments, the turbine outer ring size detection device further comprises a pressing assembly installed on the two limiting portions for applying a pressing force to the turbine outer ring to limit the turbine outer ring from moving radially outward.

[0016] In some embodiments, the pressing assembly comprises:

[0017] a support in a T shape, two ends of a horizontal part of the support being detachably connected to the two limiting portions respectively;

[0018] a pressing member comprising a connecting part and a force applying part connected to a radially inner end of the connecting part, a top end of the connecting part being adjustable in radial position relative to a vertical part of the support, the force applying part being in a curved elastic sheet for applying the pressing force to the turbine outer ring; and

[0019] an adjusting member for adjusting the radial position of the pressing member relative to the mounting member.

[0020] In some embodiments, the turbine outer ring size detection device further comprises a plurality of fasteners, a plurality of first through holes being circumferentially spaced on the rib plate, a plurality of second through holes being circumferentially spaced on the limiting portion, the plurality of second through holes being correspondingly arranged with the plurality of first through holes, and at least one second through hole on the limiting portion being an elongated circular hole extending radially.

[0021] In some embodiments, the turbine outer ring size detection device further comprises a vernier caliper with two tapered detection feet, a recessed portion being provided on an outer side surface of the limiting portion along the axial direction, the second through hole being provided on a bottom wall of the recessed portion, and the fastener comprising a bolt and a nut, the bolt passing through the first through hole and the second through hole, and the nut being located in the recessed portion and connected with the bolt.

[0022] The detection hole comprises a first tapered hole provided on the outer side surface of the limiting portion along the axial direction, the first tapered hole being located on the outer side of the same radial direction of the second through hole, a second tapered hole being provided on an end surface of the bolt, and the vernier caliper being 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 tapered detection feet into the first tapered hole and the second tapered hole respectively.

[0023] In some embodiments, the detection device further comprises a micrometer, and the detection hole comprises a plurality of:

[0024] A plurality of third through holes are arranged on the limiting portions at intervals in the circumferential direction and extend in the axial direction, and are used to detect the relative position size and parallelism of the two limiting portions by means of a dial gauge.

[0025] In some embodiments, the detection device further comprises a dial gauge, and the detection holes are provided in plurality, comprising:

[0026] A plurality of fourth through holes are arranged on the first plate at intervals in at least one of the circumferential direction and the axial direction and extend in the radial direction, and are used to detect the radius size and cylindricity of the inner radial surface of the circular arc plate by means of a dial gauge;

[0027] A plurality of fifth through holes are arranged on the second plate at intervals in the circumferential direction and extend in the axial direction, and are used to detect the position size and flatness of the axial end surface of the circular arc plate by means of a dial gauge; and / or

[0028] A plurality of sixth through holes are arranged on the third plate at intervals in the circumferential direction and extend in the radial direction, and are used to detect the radius size and cylindricity of the outer radial surface of the circular arc plate by means of a dial gauge.

[0029] In some embodiments, the dial gauge comprises a gauge body, a positioning rod and a measuring rod, the positioning rod is connected to one end of the gauge body, the gauge body and the positioning rod are provided with a mounting hole for the measuring rod to pass through, and the end of the positioning rod is tapered;

[0030] The outer end of the third through hole, the fourth through hole, the fifth through hole and / or the sixth through hole is provided with a tapered orifice, which is used to position the dial gauge in the state that the measuring rod is inserted into the detection hole and cooperates with the end of the positioning rod.

[0031] In some embodiments, the distance between the opposite surfaces of the two limiting portions is greater than the distance between the outer sides of the two rib plates, and the distance between the opposite surfaces of the two second plates is greater than the axial size of the circular arc plate; in the state that the turbine outer ring is installed in the accommodating cavity, the outer surface of one of the rib plates is in contact with the inner surface of the corresponding limiting portion, and there is a gap between the inner surface of each of the two second plates and the axial end surface of the circular arc plate.

[0032] According to a second aspect of the present disclosure, a detection method based on the turbine outer ring size detection device described in the above embodiments is provided, comprising:

[0033] The turbine outer ring is loaded into the accommodating cavity from the circumferential side end of the installation component;

[0034] The inner side wall of the first cavity cooperates with the outer side wall of the circular arc plate to radially position the turbine outer ring, and the inner side wall of one of the limiting portions in the axial direction cooperates with the outer side wall of the rib plate to axially position the turbine outer ring;

[0035] The turbine outer ring is subjected to size detection through the detection hole.

[0036] In some embodiments, a plurality of first through holes are arranged on the rib plate in a circumferential direction, a plurality of second through holes are arranged on the limiting part in a 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 limiting part is an oblong hole extending in a radial direction; after positioning the turbine outer ring, the detection method further comprises:

[0037] passing a set of fasteners through the first through hole and the oblong hole and maintaining a radially adjustable state;

[0038] causing the pressing assembly to apply a pressing force to the turbine outer ring to limit movement of the turbine outer ring outward in a radial direction;

[0039] sequentially passing other fasteners through corresponding first through holes and second through holes, and applying a pre-tightening force to all fasteners to fix the turbine outer ring with the two limiting parts.

[0040] The detection device of the embodiments of the present disclosure is suitable for size detection of a double-rib plate type turbine outer ring, and the turbine outer ring is positioned in a radial direction and an axial direction by the accommodating part and the limiting part, respectively, so that key sizes of the turbine outer ring can be efficiently and accurately detected through the detection hole. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, brief descriptions will be given below for the drawings needed to be used in the embodiments or prior art descriptions. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0042] Figure 1 An installation schematic diagram of the turbine outer ring size detection device of some embodiments of the present disclosure for turbine outer ring detection.

[0043] Figure 2 A structural schematic diagram of some embodiments of the turbine outer ring of the present disclosure.

[0044] Figure 3 A structural schematic diagram of some embodiments of the turbine outer ring size detection device of the present disclosure.

[0045] Figure 4 A Figure 3 A side view of the turbine outer ring size detection device shown.

[0046] Figure 5 A structural schematic diagram of some embodiments of the pressing assembly in the turbine outer ring size detection device of the present disclosure.

[0047] Figure 6 A Figure 5 side view.

[0048] Figure 7 Structure diagram of some embodiments of the fastener.

[0049] Figure 8 Structure diagram of some embodiments of the micrometer in the turbine outer ring size detection device.

[0050] Figure 9 Front view of Figure 1

[0051] Figure 10 A-A sectional view in Figure 9

[0052] Figure 11 Side view of Figure 1

[0053] Figure 12 B-B sectional view in Figure 11

[0054] Figure 13 Enlarged view at D in Figure 12

[0055] Figure 14 C-C sectional view in Figure 11 DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without carrying out creative work are within the scope of protection of the present disclosure.

[0057] The technologies, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification when appropriate.

[0058] In the description of the present disclosure, it should be understood that the orientation words such as “front, back, up, down, left, right”, “transverse, vertical, perpendicular, horizontal” and “top, bottom” and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present disclosure; the orientation words “inner, outer” refer to the inner and outer relative to the contour of each component.​​​​​​

[0059] In the description of the present disclosure, it should be understood that the use of the words "first", "second" and the like words to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present disclosure.

[0060] The present disclosure provides a turbine outer ring size detection device, hereinafter referred to as "detection device" for short. In order to more clearly describe the structure of the detection device, first, the structure of the turbine outer ring 1 is described. Figure 2 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. The two rib plates 12 are spaced apart along the axial direction of the circular arc plate 11 and extend along the circumferential direction of the circular arc plate 11. The extension lengths of the two rib plates 12 and the circular arc plate 11 can be consistent. The circular arc plate 11 is an equal-thickness plate, and the rib plate 12 is also an equal-thickness plate. The multi-segment turbine outer ring 1 is sequentially connected along the circumferential direction to form a whole turbine outer ring assembly. During detection, the size of each segment of the turbine outer ring 1 can be detected respectively.

[0061] In some embodiments, as shown in Figure 3 The installation component 2 extends along the circumferential direction and includes a receiving portion 21 and two limiting portions 22. For example, the installation component 2 can be made of metal. The installation component 2 is a size detection tooling, which is a tooling clamp used to assist in measuring and detecting the size characteristics of parts, so as to improve the efficiency of size detection.

[0062] The receiving portion 21 extends along the circumferential direction and has a first cavity 211 extending along the circumferential direction and used for accommodating the circular arc plate 11. The first cavity 211 has an opening at the outer end in the radial direction. In the radial direction, the inner side wall of the first cavity 211 is used to cooperate with the inner side wall of the circular arc plate 11 to position the turbine outer ring 1 in the radial direction. The radial inner side wall of the first cavity 211 has a high radius size and a high cylindrical accuracy, so as to position in the radial direction. For example, the radial size of the first cavity 211 can be greater than the thickness of the circular arc plate 11, and the inner side wall of the circular arc plate 11 cooperates with the inner side wall of the first cavity 211, which can make the circular arc plate 11 more easily fit into the first cavity 211 and improve the positioning accuracy.

[0063] The two limiting portions 22 each extend along the circumferential direction and are connected to the receiving portion 21 at both ends of the opening in the axial direction and extend outward in the radial direction. The second cavity 221 is formed between the two limiting portions 22, and the second cavity 221 and the first cavity 211 are in communication at the opening to form a receiving cavity. The inner side wall of one of the limiting portions 22 in the axial direction cooperates with the outer side wall of the rib plate 12 to position the turbine outer ring 1 in the axial direction. The relative surfaces of the two limiting portions 22 have high parallelism and relative position size accuracy.

[0064] For example, the limiting part 22 can be a limiting plate, the distance between the opposite surfaces of the two limiting parts 22 is greater than the distance between the mutually faraway surfaces of the two rib plates 12, and only one of the two limiting parts 22 is in contact with the rib plate 12, which can make the two rib plates 12 more easily installed between the two limiting parts 22, and can improve the positioning accuracy.

[0065] 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 installation part 2, and the installation part 2 is provided with a detection hole, which can be one or more according to the needs, for forming a channel for size detection of the turbine outer ring 1. Different detection holes can have high positional accuracy.

[0066] The detection device of this embodiment is suitable for size detection of the double-rib plate type turbine outer ring 1, and the turbine outer ring 1 is respectively positioned in the radial and axial directions by the accommodating part 21 and the limiting part 22, so that the key size of the turbine outer ring 1 can be efficiently and accurately detected through the detection hole.

[0067] In some embodiments, as shown in Figure 3 The accommodating part 21 includes a first plate 212, two second plates 213, and two third plates 214.

[0068] The first plate 212 extends in the circumferential direction, for example, the first plate 212 can be an equal-thickness plate. The two second plates 213 are respectively connected to the two ends of the first plate 212 in the axial direction, and both extend outward in the radial direction. The two third plates 214 are respectively connected to the mutually close ends of the two second plates 213, and extend in opposite directions in the axial direction, and an opening is formed between the two third plates 214. The two limiting parts 22 are respectively connected to the mutually close ends of the two third plates 214. The two second plates 213 and the two third plates 214 also extend in the circumferential direction. In the radial 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 to position the turbine outer ring 1 in the radial direction.

[0069] The accommodating part 21 of this embodiment can wrap the part of the circular-arc plate 11 outside the limiting part 22, and the limiting part 22 is convenient to set, so as to reliably position and install the turbine outer ring 1.

[0070] In some embodiments, as shown in Figure 1 The detection device of the present disclosure further includes a pressing assembly 3 installed on the two limiting parts 22, for applying a pressing force to the turbine outer ring 1 to limit the movement of the turbine outer ring 1 outward in the radial direction. For example, the pressing assembly 3 can be detachably installed on the two limiting parts 22, which is more conducive to the maintenance of the installation part 2 or the pressing assembly 3, and can also be stored separately. For example, the pressing assembly 3 can be provided at the circumferential intermediate position of the installation part 2, so as to provide a more balanced pressing force.

[0071] The embodiment can reliably keep the position after positioning the turbine outer ring 1 by setting the pressing assembly 3, can make the radial inner surface of the circular arc plate 11 better contact with the radial inner surface of the first cavity 211, so as to accurately detect the key size of the turbine outer ring 1, and can arbitrarily adjust the placement direction of the detection device during detection.

[0072] In some embodiments, as shown in Figure 5 and Figure 6 The pressing assembly 3 comprises a support 31, a pressing piece 32 and an adjusting piece 33.

[0073] The support 31 is T-shaped, and the two ends of the horizontal part 311 of the support 31 are respectively detachably connected with the two limiting parts 22. For example, two hinged plates 23 are arranged on the oriented outer side wall of each limiting plate in a circumferential direction, each hinged plate 23 is provided with a hinged hole 231, the end of the horizontal part 311 is located between the two hinged plates 23 on the same side, and is hinged through a first pin shaft 6, and the extending direction of the axis of the first pin shaft 6 is consistent with the tangential direction.

[0074] The pressing piece 32 comprises a connecting part 321 and a force applying part 322 connected to the radially inner end of the connecting part 321, the top end of the connecting part 321 is adjustable in the radial direction relative to the vertical part 312 of the support 31, the force applying part 322 adopts a curved elastic sheet, and is used for applying a pressing force to the turbine outer ring 1. The adjusting piece 33 is used for adjusting the radial position of the pressing piece 32 relative to the mounting piece.

[0075] For example, the middle position of the vertical part 312 is provided with a clearance 3121 penetrating in the tangential direction, the vertical part 312 is provided with a hole, the connecting part 321 is provided with an oblong hole 313 extending in the radial direction, a second pin shaft 7 passes through the hole and the oblong hole 313 to connect the pressing piece 32 to the support 31, and the position of the pressing piece 32 relative to the support 31 is adjustable in the radial direction, and the extending direction of the axis of the second pin shaft 7 is consistent with the axial direction.

[0076] The force applying part 322 can adopt a metal sheet structure and be curved, as shown in Figure 6 The force applying part 322 can comprise two extension sections 3221 and two curved sections 3222, the two extension sections 3221 extend to the circumferential two sides from the connecting part 321 respectively, the two curved sections 3222 are connected to the ends of the two extension sections 3221 respectively, and are in contact with the radial outer side of the circular arc plate 11 respectively, and the two extension sections 3221 and the radial outer side of the circular arc plate 11 have a preset interval.

[0077] The adjusting member 33 can be an adjusting screw, and the transverse portion 311 is provided with a hole on the radially outer surface. After the adjusting member 33 passes through the hole and abuts against the connecting portion 321 of the pressing member 32, the pressing force of the force applying portion 322 on the circular arc plate 11 can be adjusted by adjusting the adjusting member 33, so that the turbine outer ring 1 can be reliably fixed.

[0078] The pressing assembly 3 of this embodiment can move the force applying 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 applying portion 322 and the outer side surface of the circular arc plate 11 is greater than the thickness of the circular arc plate 11, thereby facilitating the loading of the turbine outer ring 1 into the accommodating cavity; after the turbine outer ring 1 is positioned and fixed, the force applying portion 322 is moved radially inward by adjusting the adjusting member 33, so as to apply a pressing force to the circular arc plate 11 and maintain the relative positional relationship between the turbine outer ring 1 and the mounting member 2, thereby improving the accuracy of the size detection of the turbine outer ring 1, improving the detection efficiency, and shortening the detection period.

[0079] In particular, for the turbine outer ring 1 formed of a ceramic matrix composite material, due to poor preparation forming precision and great processing difficulty, the embodiment of the present disclosure can accurately detect the key size, which is of great significance to improve the processing precision of the part. The ceramic matrix composite material is a kind of composite material composed of a ceramic matrix and various fibers, which usually has the characteristics of high temperature resistance, high strength and modulus, small density, strong corrosion resistance, and difficult processing, and has wide application prospects in aerospace hot end structural parts.

[0080] In some embodiments, as shown in Figures 1 to 4 The detection device further includes a plurality of fasteners 4. A plurality of first through holes 121 are arranged on the rib plate 12 in a circumferential direction. A plurality of second through holes 222 are arranged on the limiting portion 22 in a circumferential direction. The plurality of second through holes 222 are arranged correspondingly to the plurality of first through holes 121. At least one second through hole 222 on the limiting portion 22 is an elongated circular hole extending in a radial direction. 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.

[0081] For example, two or more first through holes 121 are arranged on the rib plate 12 in a circumferential direction. Correspondingly, two or more second through holes 222 are arranged on the limiting portion 22 in a circumferential direction. Among them, one second through hole 222 of the same limiting portion 22 can be arranged as an elongated circular hole.

[0082] The embodiment can fix the turbine outer ring 1 to the mounting component 2 through a plurality of fasteners 4 after positioning the turbine outer ring 1, and can also adjust the radial mounting position of the turbine outer ring 1 through the long circular hole to make the radial inner surface of the circular arc plate 11 better contact with the radial inner surface of the first cavity 211, increase the radial positioning accuracy of the turbine outer ring 1, and improve the accuracy of the size detection of the turbine outer ring 1.

[0083] Specifically, after positioning the turbine outer ring 1, first, a group of fasteners 4 are passed through the first through hole 121 and the long circular hole and kept in a radially adjustable state; then, the pressing assembly 3 is made to apply a pressing force to the turbine outer ring 1 to limit the turbine outer ring 1 from moving outward in the radial direction, at which time the radial inner surface of the circular arc plate 11 is reliably in contact with the radial inner surface of the first cavity 211; then, the other fasteners 4 are sequentially passed through the corresponding first through hole 121 and the second through hole 222, and a pre-tightening force is applied to all the fasteners 4 to fix the turbine outer ring 1 with the two limiting portions 22.

[0084] In some embodiments, as shown in Figure 7 , Figure 12 and Figure 13 , the detection device further comprises a vernier caliper with two tapered detection feet, the limiting portion 22 is provided with a recessed portion 223 on the outer side surface in the axial direction, and the second through hole 222 is arranged on the bottom wall of the recessed portion 223; the fastener 4 comprises a bolt 41 and a nut 42, the bolt 41 passes through the first through hole 121 and the second through hole 222, and the nut 42 is located in the recessed portion 223 and connected with the bolt 41.

[0085] The detection hole comprises a first tapered hole 224 arranged on the outer side surface of the limiting portion 22 in the axial direction, the first tapered hole 224 is located on the outer side of the same radial direction of the second through hole 222, and the radial inner surface of the first cavity 211 has a higher positional accuracy. The end surface of the bolt 41 is provided with a second tapered hole 413, and the vernier caliper is used to detect the radial position degree of the first through hole 121 relative to the inner surface of the circular arc plate 11 by inserting the two tapered detection feet into the first tapered hole 224 and the second tapered hole 413 respectively.

[0086] The embodiment can make the end of the bolt 41 flush with the outer side wall of the limiting portion 22 in the axial direction through the arrangement of the recessed portion 223, so that the vernier caliper can be detected at a better placement angle, and the detection feet of the vernier caliper can be positioned through the arrangement of the tapered hole, which can prevent the vernier caliper from shaking during measurement and improve the detection accuracy.

[0087] In the design of the installation component 2, the first cavity 211 is a positioning surface along the radially inner surface, which can ensure the radial position accuracy of the first tapered hole 224 relative to the radially inner surface of the first cavity 211. Therefore, after measuring the distance between the first tapered hole 224 and the second tapered hole 413, the radial position degree of the first through hole 121 relative to the inner surface of the circular arc plate 11 can be obtained by calculation. Each second through hole 222 is correspondingly provided with a first tapered hole 224, so as to obtain the radial position degree of all the first through holes 121 relative to the inner surface of the circular arc plate 11.

[0088] As shown in Figure 7 , the bolt 41 includes a screw rod 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 opening position of the first through hole 121, and the boss 422 abuts against the bottom surface of the recessed portion 223, so as to realize the larger contact area between the nut 42 and the limiting portion 22 and improve the connection reliability.

[0089] In some embodiments, as shown in Figure 3 , the detection device further includes a micrometer 5, and the detection holes are provided in multiple numbers, including: multiple third through holes 225 which are spaced apart along the circumference on the limiting portion 22 and extend along the axis, and are used for detecting the relative position size and parallelism of the two limiting portions 22 by the micrometer 5.

[0090] This embodiment is provided with multiple third through holes 225 which are spaced apart along the circumference on each limiting portion 22, and the micrometer 5 sequentially passes through the multiple third through holes 225 to detect the position size at each position of the rib plate 12 on the axial outer side, so as to detect the relative position size and parallelism of the two limiting portions 22.

[0091] In some embodiments, the detection holes are provided in multiple numbers, including: multiple fourth through holes 2121, multiple fifth through holes 2131 and / or multiple sixth through holes 2141.

[0092] The multiple fourth through holes 2121 are spaced apart along at least one of the circumference and the axis on the first plate 212, and extend along the radius, and are used for detecting the radius size and cylindricity of the radially inner surface of the circular arc plate 11 by the micrometer 5. For example, as shown in Figure 3 , multiple groups of fourth through holes 2121 are spaced apart along the axis on the first plate 212, and each group of fourth through holes 2121 includes multiple fourth through holes 2121 which are spaced apart along the circumference.

[0093] This embodiment is provided with multiple fourth through holes 2121 in each region of the first plate 212, and the micrometer 5 sequentially passes through the multiple fourth through holes 2121 to detect the position size at each position of the radially inner surface of the circular arc plate 11, so as to obtain the radius size and cylindricity of the radially inner surface of the circular arc plate 11.

[0094] A plurality of fifth through holes 2131 are arranged on the second plate 213 at intervals in the circumferential direction and extend in the axial direction, and are used to detect the position size and flatness of the axial end surface of the circular arc plate 11 by means of the dial gauge 5.

[0095] This embodiment can obtain the position size and flatness of the axial end surface of the circular arc plate 11 by arranging a plurality of fifth through holes 2131 on the second plate 213 at intervals in the circumferential direction and making the dial gauge 5 pass through the plurality of fifth through holes 2131 in turn to detect the position size of each part of the axial end surface of the circular arc plate 11.

[0096] A plurality of sixth through holes 2141 are arranged on the third plate 214 at intervals in the circumferential direction and extend in the radial direction, and are used to detect the radius size and cylindricity of the radial outer surface of the circular arc plate 11 by means of the dial gauge 5.

[0097] This embodiment can obtain the radius size and cylindricity of the radial outer surface of the circular arc plate 11 by arranging a plurality of sixth through holes 2141 on each region of the third plate 214 and making the dial gauge 5 pass through the plurality of sixth through holes 2141 in turn to detect the position size of each part of the radial outer surface of the circular arc plate 11.

[0098] In some embodiments, as shown in Figure 8 and Figure 14 The detection device further comprises a dial gauge 5, which comprises a gauge body 51, a positioning rod 52 and a measuring rod 53. The positioning rod 52 is connected to one end of the gauge body 51, and the gauge body 51 and the positioning rod 52 are provided with a mounting hole 511 for the measuring rod 53 to pass through. The end of the positioning rod 52 is tapered. The outer end of the third through hole 225, the fourth through hole 2121, the fifth through hole 2131 and / or the sixth through hole 2141 is provided with a tapered orifice for positioning the dial gauge 5 in the state of being inserted into the detection hole by the measuring rod 53.

[0099] This embodiment can position the dial gauge 5 by the tapered orifice of the detection hole when being detected by the dial gauge 5, so that the dial gauge 5 can be kept in a stable detection state, thereby improving the accuracy of the size detection of the turbine outer ring 1.

[0100] In some embodiments, as shown in Figure 12 The distance between the opposite surfaces of the two limiting portions 22 is greater than the distance between the outer 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 size of the circular arc plate 11. In the state that the turbine outer ring 1 is installed in the accommodating cavity, the outer surface of one of the rib plates 12 is in contact with the inner surface of the corresponding limiting portion 22, and there is a gap between the inner surface of each of the two second plates 213 and the axial end surface of the circular arc plate 11.

[0101] The embodiment axially positions the turbine outer ring 1 only through the inner surface of the limiting portion 22, so as to avoid over-positioning, and can improve the axial positioning accuracy of the turbine outer ring 1.

[0102] The detection device of the above embodiment of the present disclosure, in cooperation with the vernier caliper and the dial gauge 5, realizes rapid and reliable measurement of the installation positioning key size and the matching profile size of the double-rib plate type turbine outer ring 1, and based on the linear size measurement data, can quickly and accurately determine whether the shape size, position degree and profile accuracy of the turbine outer ring 1 meet the design requirements, thereby significantly improving the efficiency and reducing the cost of the size detection work of the turbine outer ring 1.

[0103] The use method of the detection device of the present disclosure will be described below through specific embodiments.

[0104] The key size and profile accuracy requirements that the turbine outer ring 1 needs to meet mainly include: the radius size and profile cylindricity of the radial inner surface of the arc plate 11, the position degree of the first through hole 121 relative to the radial inner surface of the arc plate 11, the radius size and profile cylindricity of the radial outer surface of the arc plate 11, the position size and parallelism between the outer sides of the two rib plates 12.

[0105] During installation, as shown in Figure 1 , first, the adjusting member 33 is rotated upward to lift the pressing member 32, so that the minimum distance between the lower surface of the force applying portion 322 and the radial inner surface of the first cavity 211 is greater than the thickness value of the arc plate 11 of the turbine outer ring 1. Then, the turbine outer ring 1 is made to enter the accommodating cavity from the circumferential end of the accommodating cavity, so that the radial inner surface of the arc plate 11 is attached to the radial inner surface of the first cavity 211, and the axial outer surface of the one-side rib plate 12 is attached to the axial inner surface of the corresponding side limiting portion 22, so as to realize the relative position fixing between the turbine outer ring 1 and the installation member 2 along the radial direction and the axial direction.

[0106] Then, the circumferential position of the turbine outer ring 1 relative to the installation member 2 is adjusted, so that one of the bolts 41 can be arranged according to Figure 12The nuts 42 are placed in the recesses 223 and screwed with the bolts 41 in turn through the first through holes 121 and the long circular second through holes 222 on the side of the abutting limiting part 22. By applying the necessary pre-tightening force, the tapered inclined surface on the bolt head 412 is ensured to be in complete contact with the inner side edge of the first through hole 121, and the boss 422 on the nut 42 is ensured to be in contact with the bottom surface of the recess 223. Since the width dimension of the long circular second through hole 222 is slightly larger than the diameter value of the light rod portion of the positioning bolt 41, the two can be positioned in small gap fit in the circumferential direction, and then the limit fixing between the turbine outer ring 1 and the mounting part 2 in the circumferential direction can be realized, and thus the complete position fixing between the turbine outer ring 1 and the mounting part 2 is completed. Finally, the adjusting piece 33 is screwed in, the pressing piece 32 is pressed downward, so that the force applying part 322 contacts the radial outer surface of the circular arc plate 11 and elastically deforms, and a downward pressing force is generated on the turbine outer ring 1 to maintain the relative position relationship between the turbine outer ring 1 and the mounting part 2.

[0107] Then the remaining bolts 41 are sequentially threaded through the remaining first through holes 121 and the corresponding second through holes 222, and the nuts 42 are placed in the recesses 223 and screwed with each bolt 41, and the tapered inclined surface on the bolt head 412 is ensured to be in complete contact with the inner side edge of the first through hole 121, and the boss 422 on the nut 42 is ensured to be in contact with the bottom surface of the recess 223. The bolt 41 and the second through hole 222 are in large gap fit. Thus the positioning and assembly of the turbine outer ring 1 and the detection device are completed. The above structural feature form and installation requirement can ensure that the axial direction of the positioning bolt 41 coincides with the axis of the first through hole 121, and the center 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 413 are substantially the same in the axial direction, which facilitates the measurement of the radial distance between the two.

[0108] After installation, a vernier caliper (not shown) with a tapered measuring foot and a digital dial gauge with a tapered end of the positioning rod are used to measure the size of the turbine outer ring 1 with the mounting part 2 as the measurement reference.

[0109] First, the tapered measuring foot of the vernier caliper is clamped in the first tapered hole 224 and the second tapered hole 413 of the same group, and the radial distance between the two is measured. By comparing with the design target size, the position degree detection of the first through hole 121 relative to the radial inner surface of the circular arc plate 11 can be completed. Then, as shown in Figure 14As shown, the distances between different position points on different outer surfaces of the turbine outer ring 1 relative to the position measurement holes are measured by using the dial gauge 5 as a reference based on the plurality of measurement holes on the surface of the mounting part 2 perpendicular to the inside, and then the measured distance values are grouped and calculated, and based on the calculation results, the position size and profile accuracy of the different outer surfaces of the turbine outer ring 1 can be detected, including: the radius size and cylindricity of the inner and outer surfaces of the circular arc plate 11, the position size and flatness of the axial end surface of the circular arc plate 11, and the relative position size and parallelism between the surfaces of the two rib plates 12 away from each other.

[0110] The outer end of the third through hole 225, the fourth through hole 2121, the fifth through hole 2131 and / or the sixth through hole 2141 is provided with a tapered orifice for cooperating with the tapered surface of the end of the positioning rod 52 to position the dial gauge 5, and the measuring rod 53 passes through the rear end of each measurement hole and abuts against the surface of the turbine outer ring 1. During operation, first open and zero the dial gauge 5, abut the tapered surface of the end of the positioning rod 52 at the tapered orifice of the measurement hole, then push the measuring rod 53 inward and make the front end abut against the outer surface of the turbine outer ring 1, then read the reading. Finally, the distance values measured through the plurality of measurement holes are grouped and calculated, and the position size and profile accuracy of the different outer surfaces of the turbine outer ring 1 are calculated and evaluated, and it is judged whether it meets the design requirements.

[0111] Secondly, the disclosure provides a detection method based on the turbine outer ring size detection device described in the above embodiments, in some embodiments, comprising:

[0112] Step 110, the turbine outer ring 1 is loaded into the accommodating cavity from the circumferential side end of the mounting part 2;

[0113] Step 120, the inner side wall of the first cavity 211 cooperates with the outer side wall of the circular arc plate 11 to radially position the turbine outer ring 1; and one of the limiting parts 22 cooperates with the outer side wall of the rib plate 12 along the axial inner side wall to axially position the turbine outer ring 1;

[0114] Step 130, size detection of the turbine outer ring 1 is performed through the detection hole.

[0115] Steps 110-130 are sequentially executed. The detection method of this embodiment is suitable for size detection of the double-rib plate type turbine outer ring 1, and the turbine outer ring 1 is radially and axially positioned by the accommodating part 21 and the limiting part 22, respectively, so that the key size of the turbine outer ring 1 can be efficiently and accurately detected through the detection hole.

[0116] In some embodiments, a plurality of first through holes 121 are arranged on the rib plate 12 at a circumferential interval, a plurality of second through holes 222 are arranged on the limiting part 22 at a circumferential interval, 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 limiting part 22 is an elongated circular hole extending in a radial direction; after the turbine outer ring 1 is positioned in step 120, the detection method further comprises:

[0117] Step 122, passing a group of fasteners 4 through the first through hole 121 and the elongated circular hole and keeping a radial adjustable state;

[0118] Step 124, applying a pressing force to the turbine outer ring 1 by the pressing assembly 3 to limit the movement of the turbine outer ring 1 outward in a radial direction;

[0119] Step 126, sequentially passing other fasteners 4 through corresponding first through holes 121 and second through holes 222, and applying a pre-tightening force to all fasteners 4 to fix the turbine outer ring 1 and the two limiting parts 22.

[0120] Wherein, steps 122, 124 and 126 are sequentially executed. This embodiment can fix the turbine outer ring 1 to the mounting part 2 through a plurality of groups of fasteners 4 after positioning the turbine outer ring 1, and can also adjust the radial installation position through the elongated circular hole to make the radial inner surface of the circular arc plate 11 better contact and cooperate with the radial inner surface of the first cavity 211, increase the radial positioning accuracy of the turbine outer ring 1, and improve the accuracy of the size detection of the turbine outer ring 1.

[0121] The above only describes exemplary embodiments of the present disclosure and does not limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A turbine outer ring size detection device, the turbine outer ring (1) comprising a circular arc plate (11) and two rib plates (12) connected to the outer wall of the circular arc plate (11), the two rib plates (12) being arranged in an axial direction of the circular arc plate (11) and each extending in a circumferential direction of the circular arc plate (11), characterized in that, The turbine outer ring size detection device comprises a mounting component (2) extending along the circumference and comprising: a receiving part (21) having a first cavity (211) extending along the circumference and used for receiving the circular arc plate (11), the first cavity (211) having an opening at the outer end in the radial direction, and the inner side wall of the first cavity (211) being used for cooperating with the inner side wall of the circular arc plate (11) to position the turbine outer ring (1) in the radial direction; and two limiting parts (22) connected to the two ends of the opening in the axial direction of the receiving part (21) and extending outward in the radial direction, the two limiting parts (22) forming a second cavity (221) in communication with the first cavity (211) to form a receiving cavity, and the inner side wall of one of the limiting parts (22) in the axial direction cooperating with the outer side wall of the rib plate (12) to position the turbine outer ring (1) in the axial direction; wherein the circumferential side end of the receiving cavity is open, so that the turbine outer ring (1) is loaded into the receiving cavity from the circumferential side end of the mounting component (2), and the mounting component (2) is provided with a detection hole for forming a channel for size detection of the turbine outer ring (1); wherein the receiving part (21) comprises: a first plate (212) extending along the circumference; two second plates (213) connected to the two ends of the first plate (212) in the axial direction and extending outward in the radial direction; and two third plates (214) connected to the end portions of the two second plates (213) close to each other and extending in opposite directions in the axial direction, the two third plates (214) forming the opening therebetween; wherein the two limiting parts (22) are connected to the end portions of the two third plates (214) close to each other.

2. The turbine outer ring size detection apparatus according to claim 1, characterized by, Further comprising a pressing assembly (3) installed on the two limiting parts (22) for applying a pressing force to the turbine outer ring (1) to limit the movement of the turbine outer ring (1) outward in the radial direction.

3. The turbine outer ring size detection apparatus according to claim 2, characterized by, The pressing assembly (3) comprises: a support (31) in the shape of T, the two ends of the horizontal part (311) of the support (31) being detachably connected to the two limiting parts (22), respectively; a pressing member (32) comprising a connecting part (321) and a force applying part (322) connected to the radially inner end of the connecting part (321), the top end of the connecting part (321) being adjustable in position relative to the vertical part (312) of the support (31) in the radial direction, and the force applying part (322) being in the form of a curved elastic sheet for applying a pressing force to the turbine outer ring (1); and an adjusting member (33) for adjusting the radial position of the pressing member (32) relative to the mounting member.

4. The turbine outer ring size detection apparatus according to any one of claims 1 to 3, characterized by Further comprising a plurality of sets of fasteners (4), a plurality of first through holes (121) are arranged on the rib plate (12) in a circumferential direction, a plurality of second through holes (222) are arranged on the limiting portion (22) in a circumferential direction, the plurality of second through holes (222) are arranged correspondingly to the plurality of first through holes (121), and at least one of the second through holes (222) on the limiting portion (22) is an elongated circular hole extending in the radial direction.

5. The turbine outer ring size detection apparatus according to claim 4, wherein Further comprising a vernier caliper with two tapered detection feet, a recessed portion (223) is arranged on the outer side of the limiting portion (22) in the axial direction, the second through hole (222) is arranged on the bottom wall of the recessed portion (223), and the fastener (4) comprises a bolt (41) and a nut (42), the bolt (41) passes through the first through hole (121) and the second through hole (222), and the nut (42) is arranged in the recessed portion (223) and connected with the bolt (41); The detection hole comprises a first tapered hole (224) arranged on the outer side of the limiting portion (22) in the axial direction, the first tapered hole (224) is located on the outer side of the same radial direction of the second through hole (222), a second tapered hole (413) is arranged on the end face of the bolt (41), 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 the two tapered detection feet into the first tapered hole (224) and the second tapered hole (413) respectively.

6. The turbine outer ring size detection apparatus of claim 1, wherein Further comprising a dial indicator (5), the detection hole is provided with a plurality of: A plurality of third through holes (225) are arranged on the limiting portion (22) in a circumferential direction and spaced apart, and the third through holes (225) extend in the axial direction, and are used for detecting the relative position size and parallelism of the two limiting portions (22) by the dial indicator (5).

7. The turbine outer ring size detection apparatus according to claim 6, wherein The plurality of detection holes further comprise: A plurality of fourth through holes (2121) are arranged on the first plate (212) in at least one of a circumferential direction and an axial direction and are spaced apart, and the fourth through holes (2121) extend in a radial direction, and are used for detecting the radius size and cylindricity of the radial inner surface of the circular arc plate (11) by the dial indicator (5); A plurality of fifth through holes (2131) are arranged on the second plate (213) in a circumferential direction and are spaced apart, and the fifth through holes (2131) extend in an axial direction, and are used for detecting the position size and flatness of the axial end face of the circular arc plate (11) by the dial indicator (5); and / or A plurality of sixth through holes (2141) are arranged on the third plate (214) in a circumferential direction and are spaced apart, and the sixth through holes (2141) extend in a radial direction, and are used for detecting the radius size and cylindricity of the radial outer surface of the circular arc plate (11) by the dial indicator (5).

8. The turbine outer ring size detection apparatus according to claim 7, wherein The dial indicator (5) comprises a table body (51), a positioning rod (52) and a measuring rod (53), the positioning rod (52) is connected to one end of the table body (51), the table body (51) and the positioning rod (52) are provided with a mounting hole (511) for the measuring rod (53) to pass through, and the end of the positioning rod (52) is tapered. The outer end of the third through hole (225), the fourth through hole (2121), the fifth through hole (2131) and / or the sixth through hole (2141) is provided with a tapered orifice for positioning the dial gauge (5) in cooperation with the end of the positioning rod (52) in the state of being inserted into the detection hole through the measuring rod (53).

9. The turbine outer ring size detection apparatus of claim 1, wherein, The distance between the opposite surfaces of the two limiting portions (22) is greater than the distance between the outer sides 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 the state that the turbine outer ring (1) is installed in the accommodating cavity, the outer surface of one of the rib plates (12) is in contact with the inner surface of the corresponding limiting portion (22), and the inner surface of each of the two second plates (213) has a gap with the axial end surface of the circular arc plate (11).

10. A method of detecting the size of the outer ring of a turbine based on the device according to any one of claims 1 to 9, characterized in that, The turbine outer ring size detection device comprises: loading the turbine outer ring (1) from the circumferential side end of the mounting member (2) into the accommodating cavity; making the inner side wall of the first cavity (211) cooperate with the outer side wall of the circular arc plate (11) to radially position the turbine outer ring (1); and making the axial inner side wall of one of the limiting portions (22) cooperate with the outer side wall of the rib plate (12) to axially position the turbine outer ring (1); detecting the size of the turbine outer ring (1) through the detection hole.

11. The detection method according to claim 10, characterized in that, The turbine outer ring size detection device further comprises a pressing assembly (3) installed on the two limiting portions (22); a plurality of first through holes (121) are arranged on the rib plate (12) in a circumferential direction, a plurality of second through holes (222) are arranged on the limiting portion (22) in a 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 limiting portion (22) is an oblong hole extending in the radial direction; After positioning the turbine outer ring (1), the detection method further comprises: passing a group of fasteners (4) through the first through holes (121) and the oblong hole and maintaining a radially adjustable state; applying a pressing force to the turbine outer ring (1) by the pressing assembly (3) to limit the outward movement of the turbine outer ring (1) in the radial direction; sequentially passing other fasteners (4) through the corresponding first through holes (121) and second through holes (222), and applying a pre-tightening force to all fasteners (4) to fix the turbine outer ring (1) and the two limiting portions (22).

Images