CN113982995A - Guide vane adjusting device - Google Patents
Guide vane adjusting device Download PDFInfo
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- CN113982995A CN113982995A CN202111352233.4A CN202111352233A CN113982995A CN 113982995 A CN113982995 A CN 113982995A CN 202111352233 A CN202111352233 A CN 202111352233A CN 113982995 A CN113982995 A CN 113982995A
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- guide vane
- shaped groove
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- pin
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- 230000004323 axial length Effects 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
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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 relates to the technical field of axial flow compressors and discloses a guide vane adjusting device which comprises a casing, a linkage ring, a rocker arm, a guide vane, a pointer disc, a positioning pin and a plurality of positioning plates; the positioning plates are arranged on the linkage ring and are uniformly distributed around the circumferential direction of the linkage ring; each positioning plate is provided with a U-shaped groove matched with the positioning pin; the casing is provided with a plurality of pin holes matched with the positioning pins, and the pin holes and the U-shaped grooves are arranged in a one-to-one correspondence mode. When the guide vane angle needs to be adjusted, the positioning pin is inserted into the U-shaped groove of the corresponding positioning plate and the pin hole of the casing corresponding to the U-shaped groove, the required adjusting angle of the guide vane can be determined, then all the rocker arms and the guide vanes corresponding to the rocker arms in a one-to-one mode are adjusted through the linkage ring in a linkage mode, the guide vane angle adjusting effect can be achieved, and meanwhile the pointer can point to the corresponding angle on the pointer disc. The arrangement mode has the advantages of small and exquisite structure, simplicity and convenience, and easy operation, and is suitable for the adjusting device of the small multistage axial flow compressor.
Description
Technical Field
The invention relates to the technical field of axial-flow compressors, in particular to a guide vane adjusting device.
Background
The multistage axial flow compressor needs to control the airflow angle of the adjustable guide vane through an adjusting device to realize the adjustment of the air inlet flow. The guide vane adjusting device generally comprises a casing, a linkage ring, a rocker arm, a guide vane, a pointer and a pointer disk; the casing and the linkage ring are coaxially arranged, the pointer disc is arranged on the casing, the rocker arm is arranged on the communication ring, the guide vane is arranged on the rocker arm, and the pointer is arranged on the guide vane; when the link ring rotates, the rocker arm can be driven to move so as to adjust the angle of the guide vane, and after the guide vane changes the angle, the pointer can reach the corresponding angle on the pointer disk.
In the prior art, the guide vane angle can be adjusted in a point-like manner by a gear rack driving linkage ring; alternatively, as described in publication nos. CN208397009U and CN106930965A, the point-like adjustment of the guide vane angle is achieved by adding an adjustment block.
However, the gear and rack mode needs to process the journal on each stage of stator guide vane into a gear or assemble the gear, and the space structure of the rack is complex, the occupied space is large and the processing difficulty is large; and the arrangement of the adjusting blocks, when the circumferential distance between the single-stage stator guide vanes is small, the adjacent adjusting blocks have the problem of interference, for example, the schemes recorded in the publication numbers CN208397009U and CN106930965A, and the radial fasteners of the corresponding adjusting devices need to be assembled and disassembled one by one each time when the angle is adjusted.
Therefore, how to design an adjusting device which has a simple structure and is suitable for a small multistage axial flow compressor becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention provides a guide vane adjusting device which is small, exquisite, simple and convenient in structure, easy to operate and suitable for adjusting a small multistage axial flow compressor.
In order to achieve the purpose, the invention provides the following technical scheme:
a guide vane adjusting device comprises a casing, a linkage ring, a rocker arm, a guide vane, a pointer disc, a positioning pin and a plurality of positioning plates; the positioning plates are all arranged on the linkage ring and are uniformly distributed around the circumferential direction of the linkage ring; each positioning plate is provided with a U-shaped groove matched with the positioning pin; the casing is provided with a plurality of pin holes matched with the positioning pins, and the pin holes and the U-shaped grooves are arranged in a one-to-one correspondence manner; the positioning pin is used for being inserted into a U-shaped groove and a pin hole corresponding to the U-shaped groove, so that the guide vane adjusting device determines the adjusting angle of the guide vane.
According to the guide vane adjusting device provided by the invention, when the angle of the guide vane needs to be adjusted, the required adjusting angle of the guide vane can be determined only by inserting the positioning pin into the U-shaped groove of the corresponding positioning plate and the pin hole of the casing corresponding to the U-shaped groove, then all the rocker arms and the guide vanes corresponding to the rocker arms one by one are adjusted in a linkage manner through the linkage ring, the guide vane angle adjusting function can be realized, and meanwhile, the pointer can point to the corresponding angle on the pointer disk.
The arrangement mode can realize the confirmation of the required adjusting angle of the guide vane only by inserting the positioning pin into the U-shaped groove and the pin hole corresponding to different adjusting angles, has small and exquisite structure, is simple and convenient, is easy to operate, and is suitable for the adjusting device of the small multistage axial flow compressor.
Optionally, the plurality of positioning plates include a zero positioning plate and a plurality of corner positioning plates; when the guide vane does not need to adjust the angle, the positioning pin is used for being inserted into the U-shaped groove of the zero positioning plate and the pin hole corresponding to the U-shaped groove; when the guide vane needs to adjust the angle, the positioning pin is used for being inserted into a U-shaped groove of a corner positioning plate and a pin hole corresponding to the U-shaped groove.
Optionally, the adjustment angle of the guide vane satisfies the following relation:
bi°＝arcsin[L*sin(ai°)/R1]；
wherein ai degree is the adjusting angle of the guide vane; bi-degree is the angle difference between a U-shaped groove on a corner positioning plate and a pin hole corresponding to the U-shaped groove and perpendicular to the axial direction of the compressor; l is the axial length of the rocker arm; r1 is the distance of the rocker arm from the engine axis when the vanes do not need to be angled.
Optionally, a plurality of locating plates all can dismantle with the link ring and be connected.
Optionally, the linkage ring is provided with a plurality of groups of mounting holes; the plurality of groups of mounting holes are arranged in one-to-one correspondence with the plurality of positioning plates.
Optionally, the U-shaped groove satisfies the following relation:
L1≥L*[1-cos(an°)]；
wherein, L1 is the length of U type groove; l is the axial length of the rocker arm; l is the axial stroke of the linkage ring when the adjusting angle of the guide vane is in the range of +/-an degrees.
Optionally, a coaxial element is arranged between the linkage ring and the casing; the universal ball is used for enabling the linkage ring and the casing to keep a coaxial state in real time.
Optionally, the coaxial member is welded to the link ring.
Optionally, the coaxial member comprises a screw and a gimbaled ball; one end of the screw is in threaded connection with the linkage ring, and the other end of the screw is in rotational connection with the universal ball; the universal ball is abutted against the side wall of the casing.
Optionally, the coaxial member is plural; a plurality of coaxial members are spaced circumferentially about the barrel.
Drawings
Fig. 1 is a schematic structural diagram of a guide vane adjusting device provided in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a guide vane adjusting device provided by an embodiment of the present invention at another angle;
FIG. 3 is a front view of a vane adjusting apparatus provided by an embodiment of the present invention;
FIG. 4 is a rear view of a vane adjusting apparatus provided by an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken at E-E of FIG. 3;
fig. 6 is a cross-sectional view at F-F in fig. 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a guide vane adjusting device provided in an embodiment of the present invention; FIG. 2 is a schematic structural view of a guide vane adjusting device provided by an embodiment of the present invention at another angle; FIG. 3 is a front view of a vane adjusting apparatus provided by an embodiment of the present invention; FIG. 4 is a rear view of a vane adjusting apparatus provided by an embodiment of the present invention; FIG. 5 is a cross-sectional view taken at E-E of FIG. 3; FIG. 6 is a cross-sectional view taken at F-F of FIG. 3; referring to fig. 1 to 6, the guide vane adjusting device provided by the embodiment of the present invention includes a casing 1, a link ring 2, a rocker arm 3, a guide vane 4, a pointer 5, a pointer disk 6, a positioning pin 7, and a plurality of positioning plates 8; wherein, a plurality of positioning plates 8 are all arranged on the linkage ring 2 and are evenly distributed around the circumference of the linkage ring 2; each positioning plate 8 is provided with a U-shaped groove 9 matched with the positioning pin 7; the casing 1 is provided with a plurality of pin holes 10 matched with the positioning pins 7, and the pin holes 10 are arranged in one-to-one correspondence with the U-shaped grooves 9; the positioning pin 7 is used for being inserted into a U-shaped groove 9 and a pin hole 10 corresponding to the U-shaped groove 9, so that the guide vane adjusting device determines the adjusting angle of the guide vane 4.
As shown in fig. 1, 2, 5 and 6, in order to accurately mount the pointer disk 6, the rocker arm 3, the communication ring, the casing 1, the guide vane 4 and the pointer 5; the guide vane adjusting device is also correspondingly provided with a locking gasket 15, a bearing 16, a bearing outer ring 17, a pin with a lock screw hole 18, a distance sleeve 19, an inner bushing 20, a locking screw 21, a connecting plate of the half-and-half linkage ring 2 and other structures 22; the arrangement mode of the structure is the conventional technical means, and is not described in detail.
The stator 4 that this embodiment provided is adjusted, when the 4 angles of stator need be adjusted, only need to insert locating pin 7 in the U type groove 9 of the locating plate 8 that corresponds and the pinhole 10 of the quick-witted casket 1 that corresponds with this U type groove 9 can accomplish the required angle regulation's of stator 4 definite, then adjust all rocking arms 3 and the stator 4 with rocking arm 3 one-to-one through the linkage of link 2, can play the effect of the 4 angle modulation of stator, pointer 5 also can point to the angle that corresponds on the pointer dish 6 simultaneously.
Therefore, the beneficial effects of the arrangement mode are as follows: the confirmation of the required adjusting angle of the guide vane 4 can be realized only by inserting the positioning pin 7 into the U-shaped groove 9 and the pin hole 10 corresponding to different adjusting angles, the structure is small, exquisite, simple and convenient, the operation is easy, and the adjusting device is suitable for the small multistage axial flow compressor.
Referring to fig. 1, 2 and 4, as an alternative embodiment, the plurality of positioning plates 8 includes a zero positioning plate 11 and a plurality of corner positioning plates 12; when the guide vane 4 does not need to adjust the angle, the positioning pin 7 is used for being inserted into the U-shaped groove 9 of the zero positioning plate 11 and the pin hole 10 corresponding to the U-shaped groove 9; when the guide vane 4 needs to be adjusted in angle, the positioning pin 7 is used for being inserted into a U-shaped groove 9 of a corner positioning plate 12 and a pin hole 10 corresponding to the U-shaped groove 9.
In this embodiment, as can be described with reference to fig. 4, when the angle of the guide vane 4 does not need to be adjusted, the positioning pin 7 only needs to be inserted into the U-shaped groove 9 of the zero positioning plate 11 and the pin hole 10 of the casing 1 corresponding to the U-shaped groove 9;
when the guide vane corner needs to be adjusted to a1 degrees, the positioning pin 7 is inserted into the U-shaped groove 9 of the corner positioning plate 12 and the pin hole 10 of the casing 1 corresponding to the U-shaped groove 9, and the angle difference between the angle of the pin hole 10 and the direction of the U-shaped groove 9 on the corner positioning plate 12, which is perpendicular to the axial direction of the compressor, is b1 degrees;
when the guide vane corner needs to be adjusted to a2 degrees, the positioning pin 7 is inserted into the U-shaped groove 9 of the corner positioning plate 12 and the pin hole 10 of the casing 1 corresponding to the U-shaped groove 9, and the angle difference between the angle of the pin hole 10 and the direction of the U-shaped groove 9 on the corner positioning plate 12, which is perpendicular to the axial direction of the compressor, is b2 degrees;
by analogy, redundant description is not repeated; in fig. 4, the deviation angle between the pin holes 10 is only one (i.e., b1 ° -15 °, b2 ° -25 °, and b3 ° -35 ° in fig. 4), and may be set by itself according to the actual operating conditions, and is not limited.
Specifically, the adjustment angle of the guide vane 4 satisfies the following relational expression:
bi°＝arcsin[L*sin(ai°)/R1]；
in the formula (1), ai degree is the adjusting angle of the guide vane 4;
bi is the angle difference between the U-shaped groove 9 on the corner positioning plate 12 and the pin hole 10 corresponding to the U-shaped groove 9 and perpendicular to the axial direction of the compressor; l is the axial length of the rocker arm 3;
r1 is the distance of the rocker arm 3 from the engine axis when the guide vanes 4 do not need to be angled.
As an alternative embodiment, a plurality of positioning plates 8 are detachably connected with the link ring 2.
Specifically, a plurality of groups of mounting holes can be arranged on the linkage ring 2; the plurality of groups of mounting holes are arranged in one-to-one correspondence with the plurality of positioning plates 8.
In the embodiment, the positioning plate 8 can be detachably connected with the link ring 2 through bolts, so that the installation is convenient and the connection is reliable; and the detachable connection is convenient for the position adjustment and the disassembly maintenance of the positioning plate 8.
As an alternative embodiment, the U-shaped groove 9 satisfies the following relation:
L1≥L*[1-cos(an°)]；
in the formula (2), L1 is the length of the U-shaped groove 9;
l is the axial length of the rocker arm 3;
l × 1-cos (an °) is the axial stroke of the link ring 2 when the adjustment angle of the guide vane 4 is within the range of ± an °.
As an alternative embodiment, a coaxial piece is arranged between the link ring 2 and the casing 1; the universal ball 14 is used for keeping the linkage ring 2 and the casing 1 in a coaxial state in real time.
As an alternative embodiment, the coaxial element is welded to the coupling ring 2.
In this embodiment, the position of the coaxial member can be more stable by the welding method, so that the linkage ring 2 and the casing 1 can be effectively ensured to keep the coaxial state in real time.
Referring to fig. 2 and 6, as an alternative embodiment, the coaxial member includes a screw 13 and a universal ball 14; one end of the screw 13 is in threaded connection with the linkage ring 2, and the other end of the screw 13 is in rotary connection with the universal ball 14; the universal ball 14 abuts against the side wall of the casing 1.
In the embodiment, the position of the universal ball 14 can be adjusted by screwing, so as to further accurately realize the coaxial state of the linkage ring 2 and the casing 1; since the universal ball 14 is rotatably connected to the screw 13 and abuts against the sidewall of the casing 1, when the link ring 2 rotates relative to the casing 1, the friction between the universal ball 14 and the casing 1 is rolling friction, and therefore, the universal ball 14 maintains the link ring 2 and the casing 1 to be coaxial in real time, and at the same time, the wear between the universal ball 14 and the casing 1 can be reduced, and the service life is prolonged.
As an alternative embodiment, the coaxial member is plural; a plurality of coaxial members are spaced around the circumference of the barrel 1.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A guide vane adjusting device comprises a casing, a linkage ring, a rocker arm, a guide vane, a pointer and a pointer disc, and is characterized by further comprising a positioning pin and a plurality of positioning plates; wherein the content of the first and second substances,
the positioning plates are all arranged on the linkage ring and are uniformly distributed around the circumferential direction of the linkage ring; each positioning plate is provided with a U-shaped groove matched with the positioning pin;
the casing is provided with a plurality of pin holes matched with the positioning pins, and the pin holes and the U-shaped grooves are arranged in a one-to-one correspondence manner;
the positioning pin is used for being inserted into a U-shaped groove and a pin hole corresponding to the U-shaped groove, so that the guide vane adjusting device determines the adjusting angle of the guide vane.
2. The guide vane adjusting apparatus according to claim 1, wherein the plurality of positioning plates includes a zero positioning plate and a plurality of corner positioning plates;
when the guide vane does not need to adjust the angle, the positioning pin is used for being inserted into the U-shaped groove of the zero positioning plate and the pin hole corresponding to the U-shaped groove;
when the guide vane needs angle regulation, the locating pin is used for inserting the U-shaped groove of a corner locating plate and the pin hole corresponding to the U-shaped groove.
3. The guide vane adjusting arrangement as claimed in claim 2, characterized in that the adjustment angle of the guide vane satisfies the following relation:
bi°＝arcsin[L*sin(ai°)/R1]；
wherein ai degree is the adjusting angle of the guide vane;
bi-degree is the angle difference between a U-shaped groove on a corner positioning plate and a pin hole corresponding to the U-shaped groove and perpendicular to the axial direction of the compressor;
l is the axial length of the rocker arm;
r1 is the distance of the rocker arm from the engine axis when the guide vanes do not need to be angled.
4. The guide vane adjusting device of claim 1, wherein a plurality of the positioning plates are detachably connected to the link ring.
5. The guide vane adjusting device of claim 4, wherein the linkage ring is provided with a plurality of sets of mounting holes;
the plurality of groups of mounting holes are arranged in one-to-one correspondence with the plurality of positioning plates.
6. The guide vane adjusting device of claim 1, wherein the U-shaped groove satisfies the following relationship:
L1≥L*[1-cos(an°)]；
wherein L1 is the length of the U-shaped groove;
l is the axial length of the rocker arm;
l × 1-cos (an °) is the axial travel of the link ring when the adjustment angle of the guide vane is in the range of ± an °.
7. The guide vane adjusting device of any of claims 1-6, wherein a coaxial piece is provided between the link ring and the casing;
the universal ball is used for enabling the linkage ring and the casing to keep a coaxial state in real time.
8. The vane adjusting apparatus as set forth in claim 7 wherein said coaxial piece is welded to said link ring.
9. The guide vane adjustment arrangement of claim 7, wherein the coaxial piece comprises a screw and a universal ball;
one end of the screw is in threaded connection with the linkage ring, and the other end of the screw is in rotational connection with the universal ball;
the universal ball is abutted against the side wall of the casing.
10. The guide vane adjusting apparatus of claim 7, wherein the coaxial piece is plural;
a plurality of coaxial members are spaced circumferentially about the barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111352233.4A CN113982995A (en) | 2021-11-16 | 2021-11-16 | Guide vane adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111352233.4A CN113982995A (en) | 2021-11-16 | 2021-11-16 | Guide vane adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113982995A true CN113982995A (en) | 2022-01-28 |
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ID=79748670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111352233.4A Pending CN113982995A (en) | 2021-11-16 | 2021-11-16 | Guide vane adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113982995A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345353A (en) * | 2023-12-04 | 2024-01-05 | 西北工业大学 | Adjustable stator structure with variable-length rocker arm and air compressor |
| CN117948191A (en) * | 2024-03-26 | 2024-04-30 | 中国航发燃气轮机有限公司 | Gas turbine and stator blade adjusting structure thereof |
-
2021
- 2021-11-16 CN CN202111352233.4A patent/CN113982995A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117345353A (en) * | 2023-12-04 | 2024-01-05 | 西北工业大学 | Adjustable stator structure with variable-length rocker arm and air compressor |
| CN117345353B (en) * | 2023-12-04 | 2024-01-26 | 西北工业大学 | Adjustable stator structure with variable-length rocker arm and air compressor |
| CN117948191A (en) * | 2024-03-26 | 2024-04-30 | 中国航发燃气轮机有限公司 | Gas turbine and stator blade adjusting structure thereof |
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Effective date of registration: 20240515 Address after: Room 101, building 7, zone a, Shanghai Lingang Xinxing Industrial Park, 600 Xinyuan South Road, Pudong New Area, Shanghai, 201406 Applicant after: ENN ENERGY POWER TECHNOLOGY (SHANGHAI) Co.,Ltd. Country or region after: China Address before: 065009 science and innovation base, Hangyi road free trade zone, Daxing airport District, Langfang pilot Free Trade Zone, Langfang, Hebei 2187 Applicant before: Shengneng Industrial Technology (Langfang) Co.,Ltd. Country or region before: China |