CN114738324B - Inlet guide vane adjusting device and centrifugal compressor - Google Patents
Inlet guide vane adjusting device and centrifugal compressor Download PDFInfo
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- CN114738324B CN114738324B CN202210358263.4A CN202210358263A CN114738324B CN 114738324 B CN114738324 B CN 114738324B CN 202210358263 A CN202210358263 A CN 202210358263A CN 114738324 B CN114738324 B CN 114738324B
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- sleeve shell
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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
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
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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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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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 an inlet guide vane adjusting device and a centrifugal compressor, wherein the inlet guide vane adjusting device comprises an outer sleeve shell, an inner sleeve shell, a plurality of inner guide vane assemblies, a plurality of outer guide vane assemblies and a driving device, wherein the inner sleeve shell is sleeved in the outer sleeve shell to form a first air passing channel and a second air passing channel, an outer guide vane in the outer guide vane assemblies is rotationally arranged in the second air passing channel through a second rotating shaft, the second rotating shaft is provided with a second driving shaft section extending to the outer side of the outer sleeve shell, an inner guide vane in the inner guide vane assemblies is rotationally arranged in the first air passing channel through a first rotating shaft, the first rotating shaft is provided with a first driving shaft section extending to the outer side of the outer sleeve shell, and the driving device is used for respectively driving the plurality of first driving shaft sections to synchronously rotate and the plurality of second driving shaft sections to synchronously rotate, so that the grading adjustment of the air inlet quantity is realized, and the problem that the air inlet quantity of the existing compressor is controlled inaccurately is solved.
Description
Technical Field
The invention relates to the technical field of centrifugal compressors, in particular to an inlet guide vane adjusting device and a centrifugal compressor.
Background
The adjustment of the air intake of the existing air compressor is that the driving device drives the rotating shaft to drive the inlet guide vane to rotate in the air duct, so that the opening of the inlet guide vane in the air duct is controlled, and the purpose of controlling the air intake is achieved, however, the opening of the inlet guide vane generally changes from 0 degrees to 90 degrees, the control of the air intake is inaccurate due to small angle errors, the requirement of the control mode on the driving device is large, and the air intake of the existing air compressor cannot be controlled accurately.
Disclosure of Invention
The invention mainly aims to provide an inlet guide vane adjusting device and a centrifugal compressor, and aims to solve the problem that the air inlet quantity control of an existing air compressor is inaccurate.
In order to achieve the above object, the inlet guide vane adjusting device according to the present invention includes:
the outer sleeve shell extends in the up-down direction, a plurality of first rotating through holes and a plurality of second rotating through holes are formed in the side wall of the outer sleeve shell at intervals in the circumferential direction, and the first rotating through holes and the second rotating through holes are formed in the up-down direction at intervals;
the inner sleeve shell is sleeved in the outer sleeve shell at intervals, a first air passage is formed in the inner cavity of the inner sleeve shell, a second air passage is formed between the outer sleeve shell and the inner sleeve shell, and a plurality of first matching through holes are formed in the side wall of the inner sleeve shell corresponding to a plurality of first rotating through holes;
the inner guide vane assemblies comprise a first rotating shaft and inner guide vanes, the first rotating shaft is rotatably arranged on the corresponding first rotating through holes and the first matching through holes along a horizontal axial line, the first rotating shaft comprises a first driving shaft section extending to the outer side of the outer sleeve shell, the inner guide vanes are arranged on the first wind passing channel and are arranged at one end of the first rotating shaft far away from the first driving shaft section, on the rotating stroke of the first driving shaft section, the corresponding inner guide vanes can be overturned and move and have a first closing position and a first unfolding position, when the inner guide vanes are all in the first closing position, the inner guide vanes are all extended along the radial direction of the outer sleeve shell and are abutted end to end, the inner guide vanes are matched together to seal the first wind passing channel, and when the inner guide vanes are all in the first unfolding position, the inner guide vanes are all extended along the axial direction of the outer sleeve shell, and the first wind passing channel is jointly opened;
the outer guide vane assemblies comprise a second rotating shaft and outer guide vanes, the second rotating shaft is rotationally arranged at the corresponding second rotating through holes along a horizontal axial line, the second rotating shaft comprises a second driving shaft section extending to the outer side of the outer sleeve shell, the outer guide vanes are arranged at the second wind passing channels and are arranged at one end of the second rotating shaft far away from the second driving shaft section, on the rotating stroke of the second driving shaft section, the corresponding outer guide vanes can overturn and move and have a second closing position and a second unfolding position, when the outer guide vanes are all in the second closing position, the outer guide vanes are all in the radial extension of the outer sleeve shell and are in head-tail abutting joint, the outer guide vanes are matched with each other to seal the second wind passing channels, and when the outer guide vanes are all in the second unfolding position, the outer guide vanes are all in the axial extension of the outer sleeve shell, and the outer guide vanes are all in the axial extension of the outer sleeve shell to open the second wind passing channels together; the method comprises the steps of,
the driving device is used for respectively driving the plurality of first driving shaft sections to synchronously rotate and the plurality of second driving shaft sections to synchronously rotate;
the driving device drives the first driving shaft segments to rotate so as to drive the inner guide vanes to rotate from the first closed position to the first unfolded position, and when the inner guide vanes are positioned at the first unfolded position, the driving device drives the second driving shaft segments to rotate so as to drive the outer guide vanes to rotate from the second closed position to the second unfolded position, so that the air inlet quantity is increased;
the driving device drives the second driving shaft segments to rotate so as to drive the outer guide vanes to rotate from the second unfolding position to the second closing position, and when the outer guide vanes are positioned at the second closing position, the driving device drives the first driving shaft segments to rotate so as to drive the inner guide vanes to rotate from the first unfolding position to the first closing position, so that the air inlet quantity is reduced.
Optionally, the inlet guide vane adjusting device further includes a plurality of connection supporting blocks, the plurality of connection supporting blocks are arranged at intervals along the circumferential direction of the second air passage, one end of each connection supporting block is arranged on the inner sleeve shell, and the other end of each connection supporting block is arranged on the outer sleeve shell.
Optionally, the connecting support blocks extend up and down; and/or the number of the groups of groups,
the connecting support block is provided with a yielding through hole which is communicated with the corresponding first rotating through hole and the corresponding first matching through hole.
Optionally, in the up-down direction, the connection support block is located below the outer guide vane.
Optionally, a plurality of receiving grooves are formed in the outer side wall of the inner sleeve shell and correspond to the second rotating through holes, receiving protruding blocks are arranged on the outer guide blades and correspond to the receiving grooves, and the receiving protruding blocks are arranged in the corresponding receiving grooves along the corresponding axial rotation of the first rotating shaft.
Optionally, the driving device includes:
the first conduction pieces are respectively connected to the corresponding first driving shaft sections, a first conduction hole is formed in the first conduction piece towards the outer sleeve shell, and the first conduction hole is arranged in an elongated shape along the up-down direction;
the driving ring is rotatably sleeved on the outer side wall of the outer sleeve shell along an up-down axial line and corresponds to the first conduction holes, a plurality of first driving rods are arranged on the peripheral side wall of the driving ring at intervals, and the first driving rods are adapted to extend into the corresponding first conduction holes; the method comprises the steps of,
the driving assembly is used for driving the driving ring to rotate.
Optionally, the first conductive hole includes a driving mating hole section and a relief extending hole section, the driving mating hole section is arranged in an arc shape, and the relief extending hole Duan Cheng is arranged in a linear extending manner;
the rotating stroke of the driving ring comprises a driving adjustment stroke and a driving connection stroke;
the driving device further includes:
the second conduction pieces are respectively connected to the corresponding second driving shaft sections, a second conduction hole is formed in the second conduction piece towards the outer sleeve shell, and the second conduction hole is arranged in an elongated shape along the up-down direction;
the secondary moving ring is rotatably sleeved on the outer side wall of the outer sleeve shell along an up-down axial line and corresponds to a plurality of second guide holes, a plurality of second driving rods are arranged on the peripheral side wall of the secondary moving ring at intervals, the second driving rods are adapted to extend into the corresponding second guide holes, and a plurality of outer guide vanes are converted between the second closed position and the second open position on the rotating stroke of the secondary moving ring;
a drive connection assembly for connecting the drive ring with the driven ring when the drive ring is in the drive connection stroke; the method comprises the steps of,
a reset driving assembly for driving the driven ring to reset from the second unfolded position to the second closed position;
wherein when the drive ring is in the drive adjustment stroke, a plurality of the first drive rods are in the corresponding drive mating bore segments, a plurality of the inner guide vanes transition between the first closed position and the first deployed position;
when the driving ring is in the driving connection stroke, the first driving rods are in the corresponding yielding extension hole sections, the inner guide vanes are in the first unfolding positions, the driving ring is in driving connection with the driven ring in a driving mode, and the outer guide vanes are converted between the second closing positions and the second unfolding positions.
Optionally, on a drive adjustment stroke, the drive ring has a drive deployed position that drives the plurality of inner guide vanes in a first deployed position;
the drive connection assembly includes a plurality of conductive structures, a plurality of the conductive structures are disposed at intervals along a circumference of the drive ring, each of the conductive structures includes:
the conduction lug is arranged on one opposite end face of the driving ring and one opposite end face of the driven ring; the method comprises the steps of,
the transmission groove is arranged on the other opposite end surfaces of the driving ring and the driven ring, and is arranged in a long shape in the rotation circumferential direction of the driving ring;
when the driving ring is in the driving unfolding position, the plurality of conductive bumps are mutually abutted with the side walls of the corresponding conductive grooves.
Optionally, on a rotational stroke of the driven ring, the driven ring has a driven closed position driving the plurality of outer guide vanes in the second closed position;
the reset driving assembly includes:
the two connecting lugs are oppositely arranged and are respectively arranged on the outer sleeve shell and the driven ring;
the two ends of the reset spring are respectively arranged on the two connecting convex blocks; the method comprises the steps of,
the two limit lugs are oppositely arranged and are respectively arranged on the outer sleeve shell and the driven ring;
when the driven ring is in the driven closed position, the two limit lugs are mutually abutted.
The invention also provides a centrifugal compressor, which comprises the inlet guide vane adjusting device.
According to the technical scheme provided by the invention, the inner sleeve shell is sleeved in the outer sleeve shell, so that the air passage is divided into the first air passage and the second air passage, the inner guide vane is arranged in the first air passage, the outer guide vane is arranged in the second air passage, the inner guide vane and the outer guide vane are respectively connected to the driving device through the first rotating shaft and the second rotating shaft, and the inner guide vane and the outer guide vane are respectively driven to rotate through the driving device so as to carry out secondary control on the air inlet, thereby reducing the requirement on the accuracy of driving adjustment of the driving device, and improving the accurate control on the air inlet.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram illustrating an embodiment of an inlet guide vane adjustment apparatus according to the present invention;
FIG. 2 is a schematic structural view of another view of the inlet guide vane adjustment device of FIG. 1;
FIG. 3 is a schematic view of the assembly of the outer and inner housings and the connecting support blocks of FIG. 1;
FIG. 4 is a schematic view of the structure of the connection supporting block in FIG. 1;
FIG. 5 is a schematic structural view of the inner vane assembly of FIG. 1;
FIG. 6 is a schematic structural view of the outer vane assembly of FIG. 1;
FIG. 7 is a schematic view of the first conductive member of FIG. 1;
FIG. 8 is a schematic view of the assembled drive and driven rings of FIG. 1;
FIG. 9 is a schematic view of the drive ring of FIG. 8;
fig. 10 is a schematic structural view of the driven ring in fig. 8.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the case where a directional instruction is involved in the embodiment of the present invention, the directional instruction is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional instruction is changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a 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 addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The adjustment of the air intake of the existing air compressor is that the driving device drives the rotating shaft to drive the inlet guide vane to rotate in the air duct, so that the opening of the inlet guide vane in the air duct is controlled, and the purpose of controlling the air intake is achieved, however, the opening of the inlet guide vane generally changes from 0 degrees to 90 degrees, the control of the air intake is inaccurate due to small angle errors, the requirement of the control mode on the driving device is large, and the air intake of the existing air compressor cannot be controlled accurately.
In view of the above, the present invention provides an inlet guide vane adjusting device and a centrifugal compressor, which aim to solve the problem of inaccurate air intake control of the existing air compressor, wherein fig. 1 to 10 are schematic diagrams of structures of an embodiment of the present invention.
Referring to fig. 1 to 6, the inlet guide vane adjusting device 100 includes an outer casing 1, an inner casing 2, a plurality of inner guide vane assemblies 4, a plurality of outer guide vane assemblies 5, and a driving device 6, wherein the outer casing 1 extends in an up-down direction, a plurality of first rotating through holes 11 and a plurality of second rotating through holes 12 are circumferentially arranged on a sidewall of the outer casing 1 at intervals, and a plurality of first rotating through holes 11 and a plurality of second rotating through holes 12 are vertically arranged at intervals; the inner sleeve shell 2 is sleeved in the outer sleeve shell 1 at intervals, a first air passage is formed in the inner cavity of the inner sleeve shell 2, a second air passage is formed between the outer sleeve shell 1 and the inner sleeve shell 2, and a plurality of first matching through holes 21 are formed in the side wall of the inner sleeve shell 2 corresponding to a plurality of first rotating through holes 11; each inner guide vane assembly 4 comprises a first rotating shaft 42 and inner guide vanes 41, the first rotating shaft 42 is rotatably arranged on the corresponding first rotating through hole 11 and the first matching through hole 21 along a horizontal axial line, the first rotating shaft 42 comprises a first driving shaft section 421 extending to the outer side of the outer sleeve shell 1, the inner guide vanes 41 are arranged on the first air passing channel and are arranged at one end of the first rotating shaft 42 far away from the first driving shaft section 421, on the rotating stroke of the first driving shaft section 421, the corresponding inner guide vanes 41 can be overturned and move and have a first closed position and a first open position, when the inner guide vanes 41 are all in the first closed position, the inner guide vanes 41 are all extended along the radial direction of the outer sleeve shell 1 and are abutted end to end, the first air passing channel is jointly matched and closed, and when the inner guide vanes 41 are all in the first open along the axial direction of the outer sleeve shell 1; each outer guide vane assembly 5 comprises a second rotating shaft 52 and outer guide vanes 51, the second rotating shaft 52 is rotatably arranged on the corresponding second rotating through hole 12 along a horizontal axial line, the second rotating shaft 52 comprises a second driving shaft section 521 extending to the outer side of the outer sleeve shell 1, the outer guide vanes 51 are arranged on the second air passing passage and are arranged at one end of the second rotating shaft 52 away from the second driving shaft section 521, on the rotating stroke of the second driving shaft section 521, the corresponding outer guide vanes 51 can be overturned and can have a second closed position and a second open position, when the outer guide vanes 51 are in the second closed position, the outer guide vanes 51 extend along the radial direction of the outer sleeve shell 1 and are abutted end to end, the second air passing passage is cooperatively closed, and when the outer guide vanes 51 are in the second open position, the outer guide vanes 51 extend along the axial direction of the outer sleeve shell 1, and the second air passing passage is jointly opened; the driving device 6 is configured to drive the plurality of first driving shaft segments 421 and the plurality of second driving shaft segments 521 to rotate synchronously; wherein the driving device 6 drives the first driving shaft segments 421 to rotate so as to drive the inner guide vanes 41 to turn from the first closed position to the first open position, and when the inner guide vanes 41 are in the first open position, the driving device 6 drives the second driving shaft segments 521 to rotate so as to drive the outer guide vanes 51 to turn from the second closed position to the second open position, thereby increasing the air intake; the driving device 6 drives the second driving shaft segments 521 to rotate so as to drive the outer guide vanes 51 to rotate from the second open position to the second closed position, and when the outer guide vanes 51 are in the second closed position, the driving device 6 drives the first driving shaft segments to rotate so as to drive the inner guide vanes 41 to rotate from the first open position to the first closed position, thereby reducing the air intake.
According to the technical scheme provided by the invention, the inner sleeve shell 2 is sleeved in the outer sleeve shell 1, so that the air passage is divided into the first air passage and the second air passage, the inner guide vane 41 is arranged in the first air passage, the outer guide vane 51 is arranged in the second air passage, the inner guide vane 41 and the outer guide vane 51 are respectively connected to the driving device 6 through the first rotating shaft 42 and the second rotating shaft 52, and the inner guide vane 41 and the outer guide vane 51 are respectively driven to rotate through the driving device 6, so that the air inlet is secondarily controlled, the requirement on the accuracy of driving adjustment of the driving device 6 is reduced, the accurate control of the air inlet is also improved, and compared with the prior art that only one-stage inlet guide vanes with larger size are arranged, the inner guide vane 41 and the outer guide vane 51 are respectively connected through the rotating shafts, so that the connection strength is higher, the bearing capacity is stronger, and vibration is less harmful.
In this embodiment, the specific driving mode of the driving device 6 is not limited, as long as the driving device can drive the plurality of first driving shaft segments 421 and the plurality of second driving shaft segments 521 to rotate synchronously. Meanwhile, in order to ensure that the outer guide vane 51 can effectively block the second air passage when in the second closed position, a plurality of connection platforms are arranged on the inner sleeve shell 2 corresponding to a plurality of positions of the outer guide vane 51 so as to correspondingly abut against one end of the outer guide vane 51 facing the inner sleeve shell 2, thereby ensuring the control effect on the air inlet quantity.
It can be understood that the inner sleeve shell 2 and the outer sleeve shell 1 may be fixed in various manners, and may be limited by connection of a plurality of first rotating shafts 42, or may be fixed by connection of fixing members, referring to fig. 3 and fig. 4, in this embodiment, the inlet guide vane adjusting device 100 further includes a plurality of connection supporting blocks 3, a plurality of connection supporting blocks 3 are disposed at intervals along a circumferential direction of the second air-passing channel, one end of the connection supporting block 3 is disposed on the inner sleeve shell 2, and the other end of the connection supporting block 3 is disposed on the outer sleeve shell 1. The connecting support blocks 3 are connected and fixed, so that the whole structure of the device is more stable. It can be understood that the connection support block 3 may be integrally formed with the inner sleeve housing 2 and the outer sleeve housing 1, or may be detachably connected.
Further, referring to fig. 4, in this embodiment, the connection supporting blocks 3 extend up and down, so as to effectively reduce the blocking effect on the air intake.
In another embodiment, the connecting support block 3 is provided with a relief through hole 31, and the relief through hole 31 is connected to the corresponding first rotating through hole 11 and the first matching through hole 21. So set up, can be through connect supporting piece 3 is longer first pivot 42 protects the support for the rotation of first pivot 42 is more stable, and then makes the rotation of interior stator blade 41 opens and shuts more accurately.
It should be noted that, the above two parallel technical features "the connection supporting block 3 extends up and down to be disposed" and "the connection supporting block 3 is provided with a yielding through hole 31, and the yielding through hole 31 is communicated to the corresponding first rotation through hole 11 and the first matching through hole 21" may be alternatively disposed, or may be disposed simultaneously, and it is obvious that the effect of the simultaneous disposition is better.
Further, in this embodiment, the connection supporting block 3 is located below the outer guiding vane 51 in the vertical direction, so that the influence of the connection supporting block 3 on the second wind-passing channel can be reduced to the greatest extent.
In order to ensure that the outer guide vane 51 stably blocks the wind, referring to fig. 3 and 6, in this embodiment, a plurality of receiving grooves 22 are formed on the outer sidewall of the inner sleeve housing 2 corresponding to the plurality of second rotating through holes 12, receiving protrusions 53 are formed on the outer guide vane 51 corresponding to the receiving grooves 22, and the receiving protrusions 53 are rotatably disposed on the corresponding receiving grooves 22 along the axial direction of the corresponding first rotating shaft 42. By connecting the two ends of the outer guide vane 51, the choke stability of the outer guide vane 51 is effectively improved.
Referring to fig. 1, 2 and 7, in the present embodiment, the driving device 6 includes a plurality of first conductive members 62, a driving ring 61 and a driving assembly, wherein the plurality of first conductive members 62 are respectively connected to the corresponding first driving shaft sections 421, a first conductive hole 621 is formed on the first conductive member 62 towards the outer sleeve shell 1, and the first conductive hole 621 is disposed in an elongated shape along an up-down direction; the driving ring 61 is rotatably sleeved on the outer side wall of the outer sleeve shell 1 along an up-down axial line, and a plurality of first driving rods 611 are arranged on the peripheral side wall of the driving ring 61 at intervals corresponding to the plurality of first conducting holes 621, and the first driving rods 611 are adapted to extend into the corresponding first conducting holes 621; the driving assembly is used for driving the driving ring 61 to rotate. The driving assembly drives the driving ring 61 to rotate, so that the first driving rod 611 drives the first conductive member 62 to swing, and further drives the first rotating shaft 42 to rotate, thereby finally realizing the synchronous rotation of the inner guide vanes 41.
It will be appreciated that the first conductive member 62 may be keyed or pinned to the first driveshaft section 421.
The embodiment of the present invention is not limited to the specific form of the driving assembly, and may be a motor gear driving form or a hydraulic driving form, as long as the driving ring 61 can be driven to rotate.
Further, referring to fig. 7 to 10, in the present embodiment, the first conductive hole 621 includes a driving mating hole section 6211 and a yielding extension hole section 6212, the driving mating hole section 6211 is disposed in a circular arc shape, and the yielding extension hole section 6212 is disposed in a linear extension shape; the rotation stroke of the driving ring 61 includes a driving adjustment stroke and a driving connection stroke; the driving device 6 further includes a plurality of second conductive members 64, a driven ring 63, a driving connection assembly 65, and a reset driving assembly 66, wherein the plurality of second conductive members 64 are respectively connected to the corresponding second driving shaft segments 521, a second conductive hole 641 is formed on the second conductive member 64 toward the outer sleeve shell 1, and the second conductive hole 641 is disposed in an elongated shape along an up-down direction; the driven ring 63 is rotatably sleeved on the outer side wall of the outer sleeve shell 1 along an up-down axial line, and a plurality of second driving rods 631 are arranged on the peripheral side wall of the driven ring 63 at intervals corresponding to the plurality of second guiding holes 641, the second driving rods 631 are adapted to extend into the corresponding second guiding holes 641, and on the rotation stroke of the driven ring 63, the plurality of outer guiding blades 51 are converted between the second closed position and the second opened position; the drive connection assembly 65 is used for connecting the drive ring 61 with the driven ring 63 when the drive ring 61 is in the drive connection stroke; the reset driving assembly 66 is used for driving the driven ring 63 to reset from the second unfolding position to the second closing position; wherein when said drive ring 61 is in said drive adjustment stroke, a plurality of said first drive bars 611 are in corresponding said drive mating bore segments 6211, a plurality of said inner guide vanes 41 transitioning between said first closed position and said first open position; when the driving ring 61 is in the driving connection stroke, the first driving rods 611 are in the corresponding yielding extension hole segments 6212, the inner guide blades 41 are in the first unfolding position, the driving ring 61 is in driving connection with the driven ring 63, and the outer guide blades 51 are converted between the second closing position and the second unfolding position.
By arranging the driving connection assembly 65 to connect and limit the driving ring 61 and the driven ring 63, the driving ring 61 can drive the driven ring 63 to rotate, so that only one group of driving assemblies is needed, the complexity of the device and the production cost are greatly reduced, furthermore, the first guide hole 621 of the first conducting piece 62 is arranged to be an arc-shaped driving matching hole section 6211 and a straight-line extending yielding hole section 6212, the first driving rod 611 can smoothly drive the first conducting piece 62 to swing, and when the driving ring 61 rotates to a driving connection stroke, the first driving rod 611 is just positioned in the yielding hole section 6212, so that the first conducting piece 62 can be limited while the driving ring 61 continues to rotate, and the inner conducting blade 41 can be continuously kept at the first unfolding position; meanwhile, when the driving ring 61 is driven by the driving assembly to rotate reversely, the driving connection assembly 65 is disconnected, and the reset driving assembly 66 can reset and rotate the driven ring 63 to the initial position, so that the outer guide vane 51 rotates to the second closed position.
It should be noted that, different positions of the inner surface of the driving mating hole section 6211 are adaptively rounded corresponding to different driving positions of the first driving rod 611 section, so as to be always abutted against the circumferential side surface of the first driving rod 611 section; meanwhile, the specific forms of the driving connection assembly 65 and the reset driving assembly 66 are not limited in this embodiment, as long as the respective functions can be realized.
It will be appreciated that the length of the relief-extending bore segment 6212 is adapted to the length of the stroke of the drive ring 61 to drive the driven ring 63.
Further, it will be appreciated that the specific form of the driving connection assembly 65 may be a snap connection or a magnetic connection, however, the above structural forms are often complicated and are not beneficial to the stability of transmission, and therefore, referring to fig. 8 to 10, in this embodiment, the driving ring 61 has a driving unfolding position for driving the inner guide vanes 41 to be in the first unfolding position on the driving adjustment stroke; the driving connection assembly 65 includes a plurality of conductive structures 651, the plurality of conductive structures 651 being disposed at intervals along a circumferential direction of the driving ring 61, each conductive structure 651 including a conductive protrusion 6511 and a conductive groove 6512, the conductive protrusion 6511 being disposed on one of opposite end surfaces of the driving ring 61 and the driven ring 63; the conductive groove 6512 is provided on the other opposite end face of the driving ring 61 and the driven ring 63, and the conductive groove 6512 is provided in an elongated shape in the rotation circumferential direction of the driving ring 61; wherein the plurality of conductive bumps 6511 abut against the corresponding sidewalls of the conductive grooves 6512 when the drive ring 61 is in the drive-deployed position. The conduction bump 6511 is linked with the conduction groove 6512 in a abutting mode, so that the mode is simpler, the driving is stable, and the reliability is high.
It is understood that the conductive bumps 6511 and the conductive grooves 6512 may be disposed on different opposite end surfaces, or may be disposed on two opposite end surfaces in a staggered manner.
In another embodiment, the driven ring 63 has a driven closed position driving the plurality of the outer guide vanes 51 in the second closed position on a rotational stroke of the driven ring 63; the reset driving assembly 66 comprises two connecting lugs 661, a reset spring 662 and two limiting lugs 663, the two connecting lugs 661 are oppositely arranged, and the two connecting lugs 661 are respectively arranged on the outer sleeve shell 1 and the driven ring 63; the two ends of the return spring 662 are provided separately to the two connecting bosses 661; the two limit lugs 663 are oppositely arranged, and the two limit lugs 663 are respectively arranged on the outer sleeve shell 1 and the driven ring 63; wherein when the driven ring 63 is at the driven closed position, the two limit protrusions 663 are abutted against each other. With this arrangement, the return spring 662 is always in tension, and can stably drive the driven ring 63 for return rotation, and it is understood that, in order to further ensure stable return of the driven ring 63, the return driving assemblies 66 may be disposed in plural groups at intervals around the circumference of the driven ring 63. In other embodiments, the reset drive assembly 66 may also be in the form of a magnetically driven reset.
Further, the reset driving assemblies 66 are arranged in a plurality of groups at intervals along the axial direction of the housing sleeve 1.
In another embodiment, the limiting bump 663 is disposed corresponding to the second shaft 52, and when the driven ring 63 is in the driven closed position, the limiting bump 663 abuts against the side wall of the second shaft 52, so that another limiting bump is not disposed on the side wall of the housing sleeve 1.
In addition, the present invention further provides a centrifugal compressor 1000, where the centrifugal compressor 1000 includes the inlet guide vane adjusting device 100 in the above-mentioned scheme, and it should be noted that the structure of the inlet guide vane adjusting device 100 in the centrifugal compressor 1000 may refer to the embodiment of the inlet guide vane adjusting device 100, and will not be repeated herein; because the above inlet guide vane adjusting device 100 is used in the centrifugal compressor 1000 provided by the present invention, embodiments of the centrifugal compressor 1000 provided by the present invention include all technical solutions of all embodiments of the above inlet guide vane adjusting device 100, and the achieved technical effects are identical, and are not described herein again.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the specification and drawings of the present invention or direct/indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. An inlet guide vane adjustment device for a centrifugal compressor, the inlet guide vane adjustment device comprising:
the outer sleeve shell extends in the up-down direction, a plurality of first rotating through holes and a plurality of second rotating through holes are formed in the side wall of the outer sleeve shell at intervals in the circumferential direction, and the first rotating through holes and the second rotating through holes are formed in the up-down direction at intervals;
the inner sleeve shell is sleeved in the outer sleeve shell at intervals, a first air passage is formed in the inner cavity of the inner sleeve shell, a second air passage is formed between the outer sleeve shell and the inner sleeve shell, and a plurality of first matching through holes are formed in the side wall of the inner sleeve shell corresponding to a plurality of first rotating through holes;
the inner guide vane assemblies comprise a first rotating shaft and inner guide vanes, the first rotating shaft is rotatably arranged on the corresponding first rotating through holes and the first matching through holes along a horizontal axial line, the first rotating shaft comprises a first driving shaft section extending to the outer side of the outer sleeve shell, the inner guide vanes are arranged on the first wind passing channel and are arranged at one end of the first rotating shaft far away from the first driving shaft section, on the rotating stroke of the first driving shaft section, the corresponding inner guide vanes can be overturned and move and have a first closing position and a first unfolding position, when the inner guide vanes are all in the first closing position, the inner guide vanes are all extended along the radial direction of the outer sleeve shell and are abutted end to end, the inner guide vanes are matched together to seal the first wind passing channel, and when the inner guide vanes are all in the first unfolding position, the inner guide vanes are all extended along the axial direction of the outer sleeve shell, and the first wind passing channel is jointly opened;
the outer guide vane assemblies comprise a second rotating shaft and outer guide vanes, the second rotating shaft is rotationally arranged at the corresponding second rotating through holes along a horizontal axial line, the second rotating shaft comprises a second driving shaft section extending to the outer side of the outer sleeve shell, the outer guide vanes are arranged at the second wind passing channels and are arranged at one end of the second rotating shaft far away from the second driving shaft section, on the rotating stroke of the second driving shaft section, the corresponding outer guide vanes can overturn and move and have a second closing position and a second unfolding position, when the outer guide vanes are all in the second closing position, the outer guide vanes are all in the radial extension of the outer sleeve shell and are in head-tail abutting joint, the outer guide vanes are matched with each other to seal the second wind passing channels, and when the outer guide vanes are all in the second unfolding position, the outer guide vanes are all in the axial extension of the outer sleeve shell, and the outer guide vanes are all in the axial extension of the outer sleeve shell to open the second wind passing channels together; the method comprises the steps of,
the driving device is used for respectively driving the plurality of first driving shaft sections to synchronously rotate and the plurality of second driving shaft sections to synchronously rotate;
the driving device drives the first driving shaft segments to rotate so as to drive the inner guide vanes to rotate from the first closed position to the first unfolded position, and when the inner guide vanes are positioned at the first unfolded position, the driving device drives the second driving shaft segments to rotate so as to drive the outer guide vanes to rotate from the second closed position to the second unfolded position, so that the air inlet quantity is increased;
the driving device drives the plurality of second driving shaft sections to rotate so as to drive the plurality of outer guide vanes to rotate from the second unfolding position to the second closing position, and when the plurality of outer guide vanes are positioned at the second closing position, the driving device drives the plurality of first driving shaft sections to rotate so as to drive the plurality of inner guide vanes to rotate from the first unfolding position to the first closing position, so that the air inlet quantity is reduced.
2. The inlet guide vane adjustment device of claim 1, further comprising a plurality of connection support blocks disposed at intervals along a circumferential direction of the second wind-passing channel, wherein one end of the connection support block is disposed on the inner sleeve housing, and the other end is disposed on the outer sleeve housing.
3. The inlet guide vane adjustment device according to claim 2, wherein the connection support block is provided extending in an up-down direction; and/or the number of the groups of groups,
the connecting support block is provided with a yielding through hole which is communicated with the corresponding first rotating through hole and the corresponding first matching through hole.
4. The inlet guide vane adjustment device of claim 3, wherein the connection support block is below the outer guide vane in an up-down direction.
5. The inlet guide vane adjustment device according to claim 1, wherein a plurality of receiving grooves are formed in an outer side wall of the inner sleeve housing corresponding to the plurality of second rotation through holes, receiving protrusions are formed in the outer guide vane corresponding to the receiving grooves, and the receiving protrusions are disposed in the corresponding receiving grooves along an axial rotation of the corresponding first rotation shaft.
6. The inlet guide vane adjustment device of claim 1, wherein the drive device comprises:
the first conduction pieces are respectively connected to the corresponding first driving shaft sections, a first conduction hole is formed in the first conduction piece towards the outer sleeve shell, and the first conduction hole is arranged in an elongated shape along the up-down direction;
the driving ring is rotatably sleeved on the outer side wall of the outer sleeve shell along an up-down axial line and corresponds to the first conduction holes, a plurality of first driving rods are arranged on the peripheral side wall of the driving ring at intervals, and the first driving rods are adapted to extend into the corresponding first conduction holes; the method comprises the steps of,
the driving assembly is used for driving the driving ring to rotate.
7. The inlet guide vane adjustment device of claim 6, wherein the first conductive aperture comprises a drive mating aperture segment and a relief extension aperture segment, the drive mating aperture segment being arcuately disposed, the relief extension aperture Duan Cheng being linearly disposed;
the rotating stroke of the driving ring comprises a driving adjustment stroke and a driving connection stroke;
the driving device further includes:
the second conduction pieces are respectively connected to the corresponding second driving shaft sections, a second conduction hole is formed in the second conduction piece towards the outer sleeve shell, and the second conduction hole is arranged in an elongated shape along the up-down direction;
the secondary moving ring is rotatably sleeved on the outer side wall of the outer sleeve shell along an up-down axial line and corresponds to a plurality of second guide holes, a plurality of second driving rods are arranged on the peripheral side wall of the secondary moving ring at intervals, the second driving rods are adapted to extend into the corresponding second guide holes, and a plurality of outer guide vanes are converted between the second closed position and the second open position on the rotating stroke of the secondary moving ring;
a drive connection assembly for connecting the drive ring with the driven ring when the drive ring is in the drive connection stroke; the method comprises the steps of,
a reset driving assembly for driving the driven ring to reset from the second unfolded position to the second closed position;
wherein when the drive ring is in the drive adjustment stroke, a plurality of the first drive rods are in the corresponding drive mating bore segments, a plurality of the inner guide vanes transition between the first closed position and the first deployed position;
when the driving ring is in the driving connection stroke, the first driving rods are in the corresponding yielding extension hole sections, the inner guide vanes are in the first unfolding positions, the driving ring is in driving connection with the driven ring in a driving mode, and the outer guide vanes are converted between the second closing positions and the second unfolding positions.
8. The inlet guide vane adjustment device of claim 7, wherein the drive ring has a drive deployed position that drives the plurality of inner guide vanes in a first deployed position over a drive adjustment stroke;
the drive connection assembly includes a plurality of conductive structures, a plurality of the conductive structures are disposed at intervals along a circumference of the drive ring, each of the conductive structures includes:
the conduction lug is arranged on one opposite end face of the driving ring and one opposite end face of the driven ring; the method comprises the steps of,
the transmission groove is arranged on the other opposite end surfaces of the driving ring and the driven ring, and is arranged in a long shape in the rotation circumferential direction of the driving ring;
when the driving ring is in the driving unfolding position, the plurality of conductive bumps are mutually abutted with the side walls of the corresponding conductive grooves.
9. The inlet guide vane adjustment device of claim 7, wherein the driven ring has a driven closed position that drives the plurality of outer guide vanes in the second closed position over a rotational travel of the driven ring;
the reset driving assembly includes:
the two connecting lugs are oppositely arranged and are respectively arranged on the outer sleeve shell and the driven ring;
the two ends of the reset spring are respectively arranged on the two connecting convex blocks; the method comprises the steps of,
the two limit lugs are oppositely arranged and are respectively arranged on the outer sleeve shell and the driven ring;
when the driven ring is in the driven closed position, the two limit lugs are mutually abutted.
10. Centrifugal compressor, comprising an inlet guide vane adjustment device according to any of claims 1 to 9.
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| CN202210358263.4A CN114738324B (en) | 2022-04-07 | 2022-04-07 | Inlet guide vane adjusting device and centrifugal compressor |
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| CN202210358263.4A CN114738324B (en) | 2022-04-07 | 2022-04-07 | Inlet guide vane adjusting device and centrifugal compressor |
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| CN114738324A (en) | 2022-07-12 |
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