CN113390379A - Dynamic clearance measuring structure for rotor blade with multi-duct rotor-stator structure - Google Patents
Dynamic clearance measuring structure for rotor blade with multi-duct rotor-stator structure Download PDFInfo
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- CN113390379A CN113390379A CN202110657735.1A CN202110657735A CN113390379A CN 113390379 A CN113390379 A CN 113390379A CN 202110657735 A CN202110657735 A CN 202110657735A CN 113390379 A CN113390379 A CN 113390379A
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- rotor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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- Measuring Fluid Pressure (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The application relates to a many ducts rotor-stator structure rotor blade dynamic clearance measures structure includes: the outer stator casing is provided with an outer stator casing measuring hole; the inner stator casing is positioned on the inner side of the outer stator casing; a plurality of stator blades circumferentially distributed between the outer stator casing and the inner stator casing; the rotor casing is positioned on the inner side of the inner stator casing; a plurality of rotor blades circumferentially distributed within the rotor case; a gap measuring sensor; one end of the branch pipe is provided with a probe of the gap measuring sensor, the other end of the branch pipe leads out a lead of the gap measuring sensor, and one end of the branch pipe provided with the probe sequentially penetrates through the outer stator casing measuring hole and the inner stator casing measuring hole to press the probe into the rotor casing measuring hole; the measuring pressing cap is provided with a lead hole and is in threaded connection with the measuring hole of the outer stator casing, and one end of the branch pipe, from which the lead is led out, is pressed, so that one end of the branch pipe, provided with the probe, abuts against the outer wall of the rotor casing; the lead is led out from the lead hole.
Description
Technical Field
The application belongs to the technical field of dynamic clearance measurement of rotor blades with multi-duct rotor-stator structures, and particularly relates to a dynamic clearance measurement structure of rotor blades with multi-duct rotor-stator structures.
Background
The engine comprises a multi-duct rotor-stator structure, wherein the specific multi-duct rotor-stator structure comprises an outer stator casing, an inner stator casing positioned in the outer stator casing and a rotor casing positioned in the inner stator casing, a plurality of stator blades are distributed between the outer stator casing and the inner stator casing along the circumferential direction, and a plurality of rotor blades are distributed in the rotor casing along the circumferential direction.
In an engine test, the dynamic clearance of a rotor blade in the multi-duct rotor-stator casing structure needs to be measured, and the current measuring structure has the following defects:
1) the structure is complex, the cost is high, and the assembly is difficult;
2) when the measurement is carried out, working medium leakage is easy to occur, and after the measurement is finished, reliable plugging measures are lacked, so that the performance of the engine is influenced;
3) the cantilever type is used for supporting the clearance measurement sensor probe, so that the distance between the clearance measurement sensor probe and the blade tip part of the rotor blade is difficult to adjust, vibration is easy to occur, and the measurement precision is influenced;
4) the outer stator casing, the inner stator casing and the rotor casing need to be perforated, and the rigidity of the outer stator casing, the inner stator casing and the rotor casing is weakened.
The present application has been made in view of the above-mentioned technical drawbacks.
It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present application.
Disclosure of Invention
It is an object of the present application to provide a multi-ducted rotor and stator structure rotor blade dynamic clearance measurement structure that overcomes or alleviates at least one aspect of the technical deficiencies known to exist.
The technical scheme of the application is as follows:
a multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure, comprising:
the outer stator casing is provided with an outer stator casing measuring hole;
the inner stator casing is positioned on the inner side of the outer stator casing and is provided with an inner stator casing measuring hole;
a plurality of stator blades circumferentially distributed between the outer stator casing and the inner stator casing;
the rotor case is positioned on the inner side of the inner stator case and is provided with a rotor case measuring hole;
the rotor blades are distributed in the rotor casing along the circumferential direction, and the blade tip part is over against a rotor casing measuring hole;
a gap measuring sensor;
one end of the branch pipe is provided with a probe of the gap measuring sensor, the other end of the branch pipe leads out a lead of the gap measuring sensor, and one end of the branch pipe provided with the probe sequentially penetrates through the outer stator casing measuring hole and the inner stator casing measuring hole to press the probe into the rotor casing measuring hole;
the measuring pressing cap is provided with a lead hole and is in threaded connection with the measuring hole of the outer stator casing, and one end of the branch pipe, from which the lead is led out, is pressed, so that one end of the branch pipe, provided with the probe, abuts against the outer wall of the rotor casing; the lead is led out from the lead hole.
According to at least one embodiment of the present application, in the above-mentioned dynamic clearance measurement structure of the multi-duct rotor-stator structure rotor blade, the outer wall of the outer stator casing has an annular protrusion, and the annular protrusion surrounds the measurement hole of the outer stator casing.
According to at least one embodiment of the present application, in the above-mentioned dynamic clearance measurement structure of the multi-duct rotor-stator structure rotor blade, the outer wall of the rotor casing has an annular protrusion, and the annular protrusion surrounds the measurement hole of the rotor casing.
According to at least one embodiment of the present application, in the above-mentioned dynamic clearance measurement structure for a multi-duct rotor-stator structure rotor blade, an annular protrusion on the outer wall of the rotor casing surrounds one end of the branch pipe where the probe is arranged.
According to at least one embodiment of the application, in the above dynamic clearance measuring structure for a multi-duct rotor-stator structure rotor blade, the outer wall of one end of the branch pipe leading-out lead is provided with an annular bulge, and the measuring pressing cap presses the annular bulge.
According to at least one embodiment of the present application, in the above-mentioned dynamic clearance measuring structure for a multi-duct rotor-stator structure rotor blade, the branch pipe is formed by two parts which are butted in the radial direction, and the two parts clamp the probe.
According to at least one embodiment of the present application, the above-mentioned multi-duct rotor-stator structure dynamic clearance measurement structure further includes:
and the adjusting washer is positioned between one end of the branch pipe, which is provided with the probe, and the outer wall of the rotor casing so as to adjust the distance between the probe and the tip part.
According to at least one embodiment of the present application, the above-mentioned multi-duct rotor-stator structure dynamic clearance measurement structure further includes:
and the plugging compression cap is in threaded fit connection with the measuring hole of the stator casing at the outer side after the measuring compression cap is separated from the measuring hole of the stator casing at the outer side and is separated from one end of the lead-out wire of the branch pipe, and the gap measuring sensor is separated from the branch pipe, compresses one end of the branch pipe, which is back to the rotor casing, plugs the end of the branch pipe, and compresses one end of the branch pipe, which faces the rotor casing, on the rotor casing.
Drawings
FIG. 1 is a schematic view of an operating condition of a multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure provided by an embodiment of the present application;
FIG. 2 is a schematic illustration of another operating condition of a multi-ducted rotor and stator structure rotor blade dynamic clearance measurement structure provided by an embodiment of the present application;
FIG. 3 is a schematic diagram of a manifold and its clearance measurement sensor mating as provided by embodiments of the present application;
wherein:
1-outer stator case; 2-inner stator case; 3-stator blades; 4-rotor case; 5-rotor blades; 6-gap measuring sensor; 7-branch pipe; 8-measuring the compression cap; 9-adjusting the washer; and 10, blocking the compression cap.
For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; further, the drawings are for illustrative purposes, and terms describing positional relationships are limited to illustrative illustrations only and are not to be construed as limiting the patent.
Detailed Description
In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.
In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The word "comprising" or "comprises", and the like, when used in this description, is intended to specify the presence of stated elements or items, but not the exclusion of other elements or items.
Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.
The present application is described in further detail below with reference to fig. 1 to 3.
A multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure, comprising:
the outer stator casing 1 is provided with an outer stator casing measuring hole;
the inner stator case 2 is positioned on the inner side of the outer stator case 1, and is provided with an inner stator case measuring hole;
a plurality of stator blades 3 circumferentially distributed between the outer stator case 1 and the inner stator case 2;
the rotor case 4 is positioned on the inner side of the inner stator case 2 and is provided with a rotor case measuring hole;
the rotor blades 5 are distributed in the rotor case 4 along the circumferential direction, and the blade tip parts are opposite to the rotor case measuring holes;
a gap measurement sensor 6;
a branch pipe 7, one end of which is provided with a probe of the gap measuring sensor 6 and the other end of which leads out a lead of the gap measuring sensor 6, and one end provided with the probe sequentially passes through the outer stator casing measuring hole and the inner stator casing measuring hole and presses the probe into the rotor casing measuring hole;
a measuring pressing cap 8 which is provided with a lead hole and is screwed in the measuring hole of the outer stator casing, and presses one end of the branch pipe 7, from which the lead is led out, so that one end of the branch pipe 7, provided with a probe, is abutted against the outer wall of the rotor casing 4; the lead is led out from the lead hole.
For the rotor blade dynamic clearance measurement structure with the multi-duct rotor-stator structure disclosed in the above embodiment, those skilled in the art can understand that the design uses the branch pipe 7 to press the probe of the clearance measurement sensor 6 into the rotor casing measurement hole, lead out the probe of the clearance measurement sensor 6, and uses the measurement pressing cap 8 screwed into the outside stator casing measurement hole to press the branch pipe 7, so that the end of the branch pipe 7 provided with the probe abuts against the outer wall of the rotor casing 4, and the branch pipe 7 is placed in the outside stator casing measurement hole and the inside stator casing measurement hole, and is supported by the outside stator casing 1 and the inside stator casing 2, the structure is stable, no vibration occurs, the measurement accuracy of the rotor blade dynamic clearance is ensured, and each contact part is in close contact, and when the rotor blade dynamic clearance is measured, the working medium is not easy to leak.
For the multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure disclosed in the above embodiment, it can be understood by those skilled in the art that, besides the outer stator casing 1, the inner stator casing 2, the stator blades 3, the rotor casing 4, the rotor blades 5, and the clearance measurement sensor 6 required for measurement, which form the multi-duct rotor-stator structure, only include the branch pipe 7 and the measurement pressing cap 8, and the structure is simple in structure, low in cost, and convenient to assemble.
In some alternative embodiments, in the above-mentioned dynamic clearance measurement structure for a multi-duct rotor-stator structure rotor blade, the outer wall of the outer stator casing 1 has an annular protrusion, and the annular protrusion surrounds the outer stator casing measurement hole to compensate the rigidity of the outer stator casing 1 at the position where the outer stator casing measurement hole is formed, and in addition, the measurement pressing cap 8 can be screwed into the annular protrusion.
In some alternative embodiments, in the above-mentioned dynamic clearance measurement structure for a multi-duct rotor/stator structure rotor blade, the outer wall of the rotor casing 4 has an annular protrusion, and the annular protrusion surrounds the measurement hole of the rotor casing to compensate the rigidity of the rotor casing 4 at the location where the measurement hole of the rotor casing is formed.
In some alternative embodiments, in the above-mentioned multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure, the annular protrusion on the outer wall of the rotor casing 4 surrounds the end of the branch pipe 7 where the probe is arranged, i.e. the end of the branch pipe 7 where the probe is arranged is inserted into the inner side of the annular protrusion, so as to have better stability.
In some alternative embodiments, in the above-mentioned multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure, the outer wall of one end of the branch pipe 7 from which the lead is led out is provided with an annular bulge, and the measurement pressing cap 8 presses the annular bulge.
In some alternative embodiments, in the multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure, the branch pipe 7 is formed by two parts which are butted in the radial direction and clamp the probe.
For the multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure disclosed in the above embodiment, it can be further understood by those skilled in the art that the branch pipe 7 is connected between the outer stator casing 1, the inner stator casing 2, and the rotor casing 4, has a longer length, and in order to ensure the rigidity of the outer stator casing 1 and the inner stator casing 2, it is not suitable to form the outer stator casing measurement hole, the inner stator casing measurement hole is too large, the diameter of the branch pipe 7 is limited to be small, it is difficult to pass the lead of the clearance measurement sensor 6, and it is not easy to clamp the probe of the clearance measurement sensor 6, it is difficult to assemble the entire structure, even it is impossible to assemble the entire structure, in addition, the lead of the clearance measurement sensor 6 has a larger diameter far from one end of the probe, in this case, the above problem is more prominent, the branch pipe 7 is designed to be formed by radially butting two parts, the lead wire of the clearance measuring sensor 6 and the probe thereof can be arranged along the axial direction, and then the two parts are butted along the radial direction, so that the lead wire of the clearance measuring sensor 6 can be easily led out, and the probe is clamped, the assembly of the whole structure can be smoothly realized, and in the using process, the outer stator casing measuring hole and the inner stator casing measuring hole can effectively restrict the two parts of the branch pipe 7, so that the two parts are kept in close contact, and the leakage of working media is avoided.
In some optional embodiments, in the above-mentioned multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure, further includes:
the adjusting washer 9 is located between one end of the branch pipe 7, which is provided with the probe, and the outer wall of the rotor case 4, so that the distance between the probe and the tip part can be adjusted, the probe is prevented from protruding out of the inner wall of the rotor case 4, and the specific specification and the number of the specific specification can be determined according to specific practice when related technical personnel apply the application.
In some optional embodiments, in the above-mentioned multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure, further includes:
and a blocking compression cap 10 which is in threaded fit connection with the outer stator casing measuring hole after the measuring compression cap 8 is separated from the outer stator casing measuring hole and is separated from one end of the branch pipe 7 leading out a lead, and after the gap measuring sensor 6 is separated from the branch pipe 7, compresses one end of the branch pipe 7 back to the rotor casing 4, blocks the end of the branch pipe 7, and compresses one end of the branch pipe 7 facing to the rotor casing 4 on the rotor casing 4.
To the structure is measured to many ducts rotor stator structure rotor blade dynamic clearance that above-mentioned embodiment discloses, technical personnel in the field can understand, it is after measuring rotor blade dynamic clearance, the design compresses tightly cap 10, branch pipe 7 complex form with the shutoff, realize the shutoff to outside stator machine casket measuring hole, inboard stator machine casket measuring hole, rotor machine casket measuring hole, prevent that the working medium from revealing, the process is simple, utilize existing branch pipe 7 to realize, need not additionally with the help of other devices, and is swift, convenient.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.
Claims (8)
1. The utility model provides a many ducts rotor-stator structure rotor blade dynamic clearance measures structure which characterized in that includes:
the outer stator casing (1) is provided with an outer stator casing measuring hole;
the inner stator casing (2) is positioned on the inner side of the outer stator casing (1) and is provided with an inner stator casing measuring hole;
a plurality of stator blades (3) circumferentially distributed between the outer stator case (1) and the inner stator case (2);
the rotor case (4) is positioned on the inner side of the inner stator case (2) and is provided with a rotor case measuring hole;
the rotor blades (5) are distributed in the rotor case (4) along the circumferential direction, and the blade tip parts are opposite to the rotor case measuring holes;
a gap measuring sensor (6);
a branch pipe (7), one end of which is provided with a probe of the gap measuring sensor (6), the other end of which leads out a lead of the gap measuring sensor (6), and one end of which is provided with the probe sequentially penetrates through the outer stator casing measuring hole and the inner stator casing measuring hole to press the probe into the rotor casing measuring hole;
a measuring and pressing cap (8) which is provided with a lead hole and is screwed in the measuring hole of the outer stator casing, and presses one end of the branch pipe (7) leading out the lead so that one end of the branch pipe (7) provided with the probe is abutted against the outer wall of the rotor casing (4); the lead is led out from the lead hole.
2. The multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure of claim 1,
the outer wall of the outer stator casing (1) is provided with an annular bulge, and the annular bulge surrounds the measuring hole of the outer stator casing.
3. The multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure of claim 1,
the outer wall of the rotor case (4) is provided with an annular bulge, and the annular bulge surrounds the measuring hole of the rotor case.
4. The multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure of claim 3,
and an annular bulge on the outer wall of the rotor case (4) surrounds the branch pipe (7) and is provided with one end of the probe.
5. The multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure of claim 1,
the outer wall of one end of the branch pipe (7) leading out of the lead is provided with an annular bulge, and the measuring pressing cap (8) presses the annular bulge.
6. The multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure of claim 1,
the branch pipe (7) is formed by two parts which are butted along the radial direction and clamp the probe.
7. The multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure of claim 1,
further comprising:
and the adjusting gasket (9) is positioned at one end of the probe arranged on the branch pipe (7) and between the outer walls of the rotor case (4), so that the distance between the probe and the blade tip part can be adjusted.
8. The multi-duct rotor-stator structure rotor blade dynamic clearance measurement structure of claim 1,
further comprising:
and the sealing and pressing cap (10) is used for sealing and pressing one end of the measuring and pressing cap (8) which is separated from the measuring hole of the outer stator casing and one end of the branch pipe (7) which is led out of the lead wire are separated, and after the gap measuring sensor (6) is separated from the branch pipe (7), the sealing and pressing cap is in threaded fit connection with the measuring hole of the outer stator casing, presses one end, back to the rotor casing (4), of the branch pipe (7), seals the end of the branch pipe (7), and presses one end, facing the rotor casing (4), of the branch pipe (7) on the rotor casing (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110657735.1A CN113390379B (en) | 2021-06-14 | 2021-06-14 | Dynamic clearance measuring structure for rotor blade with multi-duct rotor-stator structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110657735.1A CN113390379B (en) | 2021-06-14 | 2021-06-14 | Dynamic clearance measuring structure for rotor blade with multi-duct rotor-stator structure |
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| CN113390379A true CN113390379A (en) | 2021-09-14 |
| CN113390379B CN113390379B (en) | 2023-04-18 |
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| CN113390379B (en) | 2023-04-18 |
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