CN111120011B - Stationary blade ring - Google Patents
Stationary blade ring Download PDFInfo
- Publication number
- CN111120011B CN111120011B CN201811276891.8A CN201811276891A CN111120011B CN 111120011 B CN111120011 B CN 111120011B CN 201811276891 A CN201811276891 A CN 201811276891A CN 111120011 B CN111120011 B CN 111120011B
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- Prior art keywords
- outer ring
- ring
- segment
- slot
- peripheral surface
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- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 34
- 230000004323 axial length Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a stator blade ring, which comprises an outer ring, an inner ring, stator blades and a first sealing element, wherein a plurality of first gaps are formed in the outer ring at intervals along the circumferential direction of the outer ring; the inner ring is positioned on the inner side of the outer ring along the radial direction of the outer ring; the stator blades are provided with a plurality of stator blades, each stator blade is connected with the outer ring and the inner ring, the stator blades are uniformly arranged at intervals along the circumferential direction of the outer ring, and the first sealing piece penetrates through the outer ring and the first gap from the outer periphery of the outer ring to the inner periphery of the outer ring so as to prevent gas from leaking out of the first gap along the axial direction of the outer ring. The stator blade ring can prevent gas in the main flow channel of the compressor from leaking from the high-pressure end to the low-pressure end along the axial direction, and eliminates the influence of the first gap on the gas flow in the main flow channel.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a stationary blade ring.
Background
In the gas turbine, the supercharging process of the gas by the gas compressor is completed by rotation work application, diffusion and rectification and diffusion of the static blades in the gas compressor runner. The stationary blade is a stationary member and is fixed to the cylinder by a stationary blade ring. The stator vane ring generally consists of an outer ring, stator vane and an inner ring. In order to facilitate assembling the stator blade ring and the holding ring or the cylinder, the outer ring and the inner ring of the stator blade ring are usually cut into multiple sections respectively, after the outer ring is assembled by the multiple sections, gaps are formed between adjacent sections, and similarly, after the inner ring is assembled by the multiple sections, gaps are formed between the adjacent sections.
In the related art, a seal is installed between adjacent sections of the inner ring to block radial and axial gas flow and prevent gas leakage at the gap of the inner ring, however, no seal is installed to the gap between adjacent sections of the outer ring. Therefore, the gas leakage at the gap of the outer ring cannot be prevented in the related art, the sealing effect is poor, the working efficiency of the compressor is affected, and the gas flow in the main runner is affected.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the invention provides the stator blade ring, which has good sealing effect, improves the working efficiency of the compressor, and eliminates the influence on the gas flow in the main flow channel.
The stator blade ring according to the embodiment of the invention comprises an outer ring, wherein a plurality of first gaps are arranged on the outer ring, and the first gaps are arranged at intervals along the circumferential direction of the outer ring so as to divide the outer ring into a plurality of arc sections extending along the circumferential direction of the outer ring; an inner ring located inside the outer ring in a radial direction of the outer ring; a plurality of stationary blades, each of the stationary blades connecting the outer ring and the inner ring, the plurality of stationary blades being arranged at regular intervals along a circumferential direction of the outer ring; and a first seal member penetrating the outer ring and the first slit from an outer periphery of the outer ring toward an inner periphery of the outer ring to prevent gas from leaking out of the first slit in an axial direction of the outer ring.
According to the stator blade ring provided by the embodiment of the invention, the first gap on the outer ring is sealed through the first sealing piece, so that gas in the main runner of the compressor is prevented from leaking from the high-pressure end to the low-pressure end at the first gap of the outer ring along the axial direction, the sealing effect of the stator blade ring is good, the working efficiency of the compressor is improved, and meanwhile, the influence of the first gap on the gas flow in the main runner is eliminated due to the fact that the first gap of the outer ring is sealed.
In some embodiments, the first seal is T-shaped.
In some embodiments, the first seal includes a first segment extending from an outer peripheral surface of the outer ring toward an inner peripheral surface of the outer ring, and a second segment extending from an inner end of the first segment toward the inner peripheral surface of the outer ring, the second segment having a length greater than a length of the first segment, the second segment having a width less than a width of the first segment.
In some embodiments, the thickness of the second section is less than the thickness of the first section.
In some embodiments, the outer ring is provided with a mounting groove, the mounting groove is communicated with the first gap, and the first sealing element is matched in the mounting groove.
In some embodiments, the axial direction of the mounting groove and the extending direction of the first slit from the outer circumferential surface of the outer ring toward the inner circumferential surface of the outer ring coincide.
In some embodiments, the mounting groove includes a first groove and a second groove in communication with each other, the first groove disposed adjacent an outer circumferential surface of the outer ring, the second groove disposed adjacent an inner circumferential surface of the outer ring, the second groove having an axial length greater than an axial length of the first groove, the second groove having a cross-sectional area less than a cross-sectional area of the first groove.
In some embodiments, the plurality of first slits are uniformly spaced apart along a circumferential direction of the outer ring.
In some embodiments, the inner ring is provided with a plurality of second slits, and the second slits are arranged at intervals along the circumferential direction of the inner ring so as to divide the inner ring into a plurality of arc sections extending along the circumferential direction of the inner ring, and the second slits are opposite to the first slits along the radial direction of the outer ring.
In some embodiments, the vane ring further includes a second seal that is cross-shaped and fits within the second gap to prevent gas from escaping from the second gap in the axial and radial directions within.
Drawings
FIG. 1 is a schematic structural view of a vane ring according to an embodiment of the invention.
FIG. 2 is a schematic structural view of an outer ring of a vane ring according to an embodiment of the invention.
FIG. 3 is an enlarged partial schematic view of an outer ring of a vane ring according to an embodiment of the invention.
FIG. 4 is an exploded view of an outer ring of a vane ring according to an embodiment of the invention.
FIG. 5 is a schematic structural view of an inner ring of a vane ring according to an embodiment of the invention.
Reference numerals:
The stator blade comprises an outer ring 1, a mounting groove 11, a first groove 111, a second groove 112, a first gap 101, a blade root groove 102, an inner ring 2, stator blades 3, a first seal 4, a first section 41 and a second section 42.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 1 to 5, the stationary blade ring according to the embodiment of the invention includes an outer ring 1, an inner ring 2, stationary blades 3, and a first seal 4, and a plurality of first slits 101 are provided on the outer ring 1, and the plurality of first slits 101 are arranged at intervals along the circumferential direction of the outer ring 1 to divide the outer ring 1 into a plurality of arc segments extending along the circumferential direction of the outer ring 1. Specifically, the plurality of first slits 11 are uniformly spaced apart in the circumferential direction of the outer ring 1, that is, the distances between adjacent first slits 101 in the circumferential direction of the outer ring 1 are the same. In other words, as shown in fig. 1,2, the first slit 101 extends from the outer circumferential surface of the outer ring 1 to the inner circumferential surface of the outer ring 1, i.e., the first slit 101 penetrates the wall thickness of the outer ring 1, and the first slit 101 extends from the first end surface of the outer ring 1 to the second end surface of the outer ring 1, i.e., the first slit 101 penetrates the outer ring 1 in a direction from the first end of the outer ring 1 toward the second end of the outer ring 1.
Specifically, the first slits 101 may have a plurality of, for example, as shown in fig. 1 and 2, the first slits 101 have 4, and the 4 first slits 101 are uniformly spaced along the circumferential direction of the outer ring 1, and the 4 first slits 101 divide the outer ring 1 into 4 arc segments extending along the circumferential direction of the outer ring 1.
The inner ring 2 is located inside the outer ring 1 in the radial direction of the outer ring 1. In other words, as shown in fig. 1, the outer ring 1 is disposed around the inner ring 2, the outer ring 1 and the inner ring 2 are disposed coaxially, and gaps exist between the inner ring 2 and the outer ring 1 in the radial direction of the outer ring 1.
The stator blades 3 have a plurality of stator blades 3, each stator blade 3 connecting the outer ring 1 and the inner ring 2, the plurality of stator blades 3 being arranged at regular intervals in the circumferential direction of the outer ring 1. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In other words, as shown in fig. 1, the stator blades 3 are located between the outer ring 1 and the inner ring 2, and the outer ends of the stator blades 3 are connected to the inner peripheral surface of the outer ring 1, and the inner ends of the stator blades 3 are connected to the outer peripheral surface of the inner ring 2. A plurality of stator blades 3 are arranged between the outer ring 1 and the inner ring 2 in the circumferential direction of the outer ring 1, i.e., the circumferential direction of the inner ring 2, and the distances between adjacent stator blades 3 are the same.
Specifically, the stator blades 3 include a tip, a blade body and a blade root sequentially connected outward in the radial direction of the outer ring 1, the inner circumferential surface of the outer ring 1 is provided with a plurality of blade root grooves 102 arranged at intervals in the circumferential direction of the outer ring 1, as shown in fig. 3, the outer ends of the blade roots of the stator blades 3 are fitted in the blade root grooves 102, and one stator blade 3 corresponds to one blade root groove 102, and the inner ends of the tip of the stator blades 3 are connected with the outer circumferential surface of the inner ring 2. Wherein the first slot 101 is spaced apart from the root slot 102, i.e. the first slot 101 is provided in the outer ring 1 at a position where there is no root slot 102.
The first seal 4 penetrates the outer ring 1 and the first slit 101 from the outer periphery of the outer ring 1 toward the inner periphery of the outer ring 1 to prevent gas from leaking out of the first slit 101 in the axial direction of the outer ring 1. In other words, as shown in fig. 3,4, the first seal 4 extends from the outer circumferential surface of the outer ring 1 to the inner circumferential surface of the outer ring 1 at the first slit 101, and the first seal 4 partitions the first slit 101 into two slit portions that are spaced apart and do not communicate in a direction from the first end surface of the outer ring 1 toward the second end surface of the outer ring 1.
According to the stator blade ring provided by the embodiment of the invention, the first gap 101 on the outer ring 1 is sealed through the first sealing piece 4, so that gas in the main runner of the compressor is prevented from leaking from the high-pressure end to the low-pressure end at the first gap 101 of the outer ring 1 along the axial direction, the sealing effect of the stator blade ring is good, the working efficiency of the compressor is improved, and meanwhile, the influence of the first gap 101 on the gas flow in the main runner is eliminated due to the fact that the first gap 101 is sealed at the first gap 101 of the outer ring 1.
In some embodiments, the first seal 4 is T-shaped. In other words, the T-shaped seal is provided inside the outer ring 1 and blocks the first slit 101 in a direction from the first end face of the outer ring 1 toward the second end face of the outer ring 1.
In some embodiments, as shown in fig. 4, the first seal 4 includes a first segment 41 and a second segment 42 connected to each other, the first segment 41 extending from the outer circumferential surface of the outer ring 1 toward the inner circumferential surface of the outer ring 1, the second segment 42 extending from the inner end of the first segment 41 in a direction from the outer circumferential surface of the outer ring 1 toward the inner circumferential surface of the outer ring 1 and extending to the inner circumferential surface of the outer ring 1, wherein the length of the first segment 41 is smaller than the length of the second segment 42, and the width of the first segment 41 is larger than the width of the second segment 41. In other words, the first section 41 and the second section 42 are generally T-shaped when connected to each other.
Here, it is to be understood that the "length" in the "length of the first section 41 is smaller than the length of the second section 42" is the length of the first seal 4 in the direction from the outer peripheral surface of the outer ring 1 toward the inner peripheral surface of the outer ring 1, and the "width" in the "width of the first section 41 is larger than the width of the second section 41" is the length of the first seal 4 in the up-down direction shown in fig. 4.
Further, the thickness of the second section 42 is smaller than the thickness of the first section 41. In this embodiment, the sealing effect can be further improved by making the thickness of the first section 41 of the first seal 4 larger than the thickness of the second section 42. Here, it is to be understood that the "thickness" in the "thickness of the second section 42 is smaller than the thickness of the first section 41" is the length of the first seal 4 in the direction along the first end face of the outer ring 1 toward the second end face of the outer ring 1.
In some embodiments, as shown in fig. 4, the outer ring 1 is provided with a mounting groove 11, the mounting groove 11 communicates with the first slit 101, and the first seal 4 is fitted in the mounting groove 11. Preferably, the axial direction of the mounting groove 11 and the extending direction of the first slit 101 from the outer circumferential surface of the outer ring 1 toward the inner circumferential surface of the outer ring 1 coincide. In other words, the mounting groove 11 extends from the outer circumferential surface of the outer ring 1 to the inner circumferential surface of the outer ring 1. It will be appreciated that the mounting groove 11 may or may not be a through groove.
Specifically, the mounting groove 11 includes a first groove 111 and a second groove 112 that communicate with each other, the first groove 111 being provided adjacent to the outer peripheral surface of the outer ring 1, i.e., the first groove 111 extends from the outer peripheral surface of the outer ring 1 in a direction from the outer peripheral surface of the outer ring 1 toward the inner peripheral surface of the outer ring 1. The second groove 112 is provided adjacent to the inner peripheral surface of the outer ring 1, i.e., the second groove 112 extends from the inner end of the first groove 111 in a direction from the outer peripheral surface of the outer ring 1 toward the inner peripheral surface of the outer ring 1. The axial length of the second groove 112 is greater than the axial length of the first groove 111, and the cross-sectional area of the second groove 112 is smaller than the cross-sectional area of the first groove 111. For example, as shown in fig. 4, the length of the second groove 112 is longer than the length of the first groove 111 in a direction from the outer peripheral surface of the outer ring 1 toward the inner peripheral surface of the outer ring 1 (corresponding to the longitudinal direction of the first seal 4); in the up-down direction (corresponding to the width direction of the first seal) shown in fig. 4, the length of the second groove 112 is smaller than the length of the first groove 111; the length of the second groove 112 is smaller than the length of the first groove 111 in a direction from the first end face of the outer ring 1 toward the second end face of the outer ring 1 (corresponding to the thickness direction of the first seal 4).
In other words, the mounting groove 11 has a shape and size conforming to the shape and size of the first seal 4, the first segment 41 of the first seal 4 is fitted in the first groove 111, and the second segment 42 of the first seal 4 is fitted in the second groove 112, so that the first slit 101 is divided into two parts of slits spaced apart in a direction from the first end face of the outer ring 1 toward the second end face of the outer ring 1 by the first seal 4.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
In some embodiments, as shown in fig. 5, the inner ring 2 is provided with a plurality of second slits 201, and the plurality of second slits 201 are arranged at intervals along the circumferential direction of the inner ring 2 to divide the inner ring 2 into a plurality of arc segments extending along the circumferential direction of the inner ring 2. Specifically, the plurality of second slits 201 are arranged at regular intervals in the circumferential direction of the inner ring 2, that is, the distances between adjacent second slits 201 in the circumferential direction of the inner ring 2 are the same. Preferably, the second slit 201 is disposed opposite to the first slit 101 in the radial direction of the outer ring 1.
In some embodiments, the vane ring further includes a second seal (not shown) that is cross-shaped and fits within the second gap 201 to prevent gas from leaking out of the second gap 201 in the axial and radial directions of the inner ring 2.
Stationary blades according to embodiments of the present invention are described below with reference to fig. 1-5.
As shown in fig. 1 to 5, the stationary blade according to the embodiment of the invention includes an outer ring 1, an inner ring 2, stationary blades 3, and a first seal 4.
The outer ring 1 is provided with a plurality of first slits 101, each first slit 101 extending from the outer circumferential surface of the outer ring 1 to the inner circumferential surface of the outer ring 1, i.e. the first slits 101 extend through the wall thickness of the outer ring 1, and the first slits 101 extend from the first end surface of the outer ring 1 to the second end surface of the outer ring 1, i.e. the first slits 101 extend through the outer ring 1 in a direction from the first end of the outer ring 1 towards the second end of the outer ring 1. The plurality of first slits 101 are uniformly spaced apart in the circumferential direction of the outer ring 1 to divide the outer ring 1 into a plurality of arc segments extending in the circumferential direction of the outer ring 1.
The inner circumferential surface of the outer ring 1 is further provided with a plurality of blade root grooves 102 arranged at intervals along the circumferential direction of the outer ring 1, and the blade root grooves 102 and the first slits 101 are spaced apart from each other.
The outer ring 1 is provided with a mounting groove 11, and the mounting groove 11 includes a first groove 111 and a second groove 112 that communicate with each other, the first groove 111 extending from the outer peripheral surface of the outer ring 1 in a direction from the outer peripheral surface of the outer ring 1 toward the inner peripheral surface of the outer ring 1. The second groove 112 extends from the inner end of the first groove 111 in a direction from the outer circumferential surface of the outer ring 1 toward the inner circumferential surface of the outer ring 1 and extends to the inner circumferential surface of the outer ring 1. The length of the second groove 112 in the direction from the outer peripheral surface of the outer ring 1 toward the inner peripheral surface of the outer ring 1 is longer than the length of the first groove 111 in the direction from the outer peripheral surface of the outer ring 1 toward the inner peripheral surface of the outer ring 1, the length of the second groove 112 in the up-down direction shown in fig. 4 is shorter than the length of the first groove 111 in the up-down direction shown in fig. 4, and the length of the second groove 112 in the direction from the first end surface of the outer ring 1 toward the second end surface of the outer ring 1 is shorter than the length of the first groove 111 in the direction from the first end surface of the outer ring 1 toward the second end surface of the outer ring 1.
The first seal 4 includes a first segment 41 and a second segment 42 connected to each other, the first segment 41 extending from the outer peripheral surface of the outer ring 1 toward the inner peripheral surface of the outer ring 1, the second segment 42 extending from the inner end of the first segment 41 in a direction from the outer peripheral surface of the outer ring 1 toward the inner peripheral surface of the outer ring 1 and extending to the inner peripheral surface of the outer ring 1, wherein the length of the first segment 41 is smaller than the length of the second segment 42, and the width of the first segment 41 is larger than the width of the second segment 41, so that the first seal 4 is generally T-shaped. The first seal 4 is shaped and sized to conform to the shape and size of the mounting groove 11, the first segment 41 fits within the first groove 111 and the second segment 42 fits within the second groove 112, thereby separating the first gap 101 by the first seal 4 into two portions of the gap that are spaced apart and do not communicate in a direction from the first end face of the outer ring 1 toward the second end face of the outer ring 1 to prevent gas from leaking out of the first gap 101 in the axial direction of the outer ring 1.
The inner ring 2 is positioned at the inner side of the outer ring 1 along the radial direction of the outer ring 1, the outer ring 1 and the inner ring 2 are coaxially arranged, and gaps are reserved between the inner ring 2 and the outer ring 1 along the radial direction of the outer ring 1. The inner ring 2 is provided with a plurality of second slits 201, and the plurality of second slits 201 are uniformly spaced along the circumferential direction of the inner ring 2 to divide the inner ring 2 into a plurality of arc sections extending along the circumferential direction of the inner ring 2, and the second slits 201 are arranged opposite to the first slits 101 along the radial direction of the outer ring 1.
The vane ring further comprises a second seal (not shown) which is cross-shaped and fits within the second gap 201 to prevent gas from leaking out of the second gap 201 in the axial and radial directions of the inner ring 2.
The stator blades 3 have a plurality of, and a plurality of stator blades 3 are evenly spaced along the circumference of outer loop 1, and stator blades 3 include along the radially outside blade tip, blade body and the blade root that connects gradually of outer loop 1, and the outer end of the blade root of stator blade 3 cooperates in blade root groove 102, and a blade root groove 102 is corresponding to a stator blade 3, and the inner of the blade tip of stator blade 3 links to each other with the outer peripheral face of inner loop 2.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (7)
1. A vane ring, comprising:
The outer ring is provided with a plurality of first gaps which are arranged at intervals along the circumferential direction of the outer ring so as to divide the outer ring into a plurality of arc sections extending along the circumferential direction of the outer ring;
An inner ring located inside the outer ring in a radial direction of the outer ring;
a plurality of stationary blades, each of the stationary blades connecting the outer ring and the inner ring, the plurality of stationary blades being arranged at regular intervals along a circumferential direction of the outer ring;
A first seal that penetrates the outer ring and the first slit from an outer periphery of the outer ring toward an inner periphery of the outer ring to prevent gas from leaking out of the first slit in an axial direction of the outer ring;
the first sealing piece is T-shaped;
The first seal includes a first segment extending from an outer peripheral surface of the outer ring toward an inner peripheral surface of the outer ring, and a second segment extending from an inner end of the first segment toward the inner peripheral surface of the outer ring, a length of the second segment being greater than a length of the first segment, a width of the second segment being less than a width of the first segment;
The thickness of the second section is less than the thickness of the first section.
2. The vane ring of claim 1, wherein the outer ring is provided with a mounting groove in communication with the first gap, the first seal fitting within the mounting groove.
3. The stationary blade ring according to claim 2, wherein an axial direction of the mounting groove and an extending direction of the first slit from an outer peripheral surface of the outer ring toward an inner peripheral surface of the outer ring coincide.
4. The vane ring of claim 3, the mounting slot comprising a first slot and a second slot in communication with each other, the first slot disposed adjacent an outer circumferential surface of the outer ring, the second slot disposed adjacent an inner circumferential surface of the outer ring, an axial length of the second slot being greater than an axial length of the first slot, a cross-sectional area of the second slot being less than a cross-sectional area of the first slot.
5. The vane ring of any of claims 1-4, wherein a plurality of the first slits are uniformly spaced along a circumference of the outer ring.
6. The vane ring of any one of claims 1-4, said inner ring having a plurality of second slots disposed therein at intervals along a circumference of said inner ring to divide said inner ring into a plurality of arcuate segments extending along a circumference of said inner ring, said second slots being disposed opposite said first slots in a radial direction of said outer ring.
7. The vane ring of claim 6, further comprising a second seal that is cross-shaped and fits within the second gap to prevent gas from escaping from the second gap in an axial and radial direction of the inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811276891.8A CN111120011B (en) | 2018-10-30 | 2018-10-30 | Stationary blade ring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811276891.8A CN111120011B (en) | 2018-10-30 | 2018-10-30 | Stationary blade ring |
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| CN111120011A CN111120011A (en) | 2020-05-08 |
| CN111120011B true CN111120011B (en) | 2024-06-21 |
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| CN113623076B (en) * | 2021-09-06 | 2022-07-22 | 中国联合重型燃气轮机技术有限公司 | Heavy gas turbine air inlet cylinder |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209129681U (en) * | 2018-10-30 | 2019-07-19 | 中国联合重型燃气轮机技术有限公司 | Fixed blade ring |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2732416B1 (en) * | 1995-03-29 | 1997-04-30 | Snecma | CONNECTION ARRANGEMENT OF TWO ANGULAR SECTORS OF TURBOMACHINE AND JOINT DESIGNED TO BE USED IN THIS ARRANGEMENT |
| US8821114B2 (en) * | 2010-06-04 | 2014-09-02 | Siemens Energy, Inc. | Gas turbine engine sealing structure |
| CN204060942U (en) * | 2014-08-13 | 2014-12-31 | 三菱日立电力***株式会社 | The sealing section structure of rotating machinery, sealing component and axial flow gas turbine |
| EP3000981A1 (en) * | 2014-09-29 | 2016-03-30 | Siemens Aktiengesellschaft | Assembly for sealing the gap between two segments of a vane ring |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209129681U (en) * | 2018-10-30 | 2019-07-19 | 中国联合重型燃气轮机技术有限公司 | Fixed blade ring |
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| Publication number | Publication date |
|---|---|
| CN111120011A (en) | 2020-05-08 |
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