CN114738324A - Inlet guide vane adjusting device and centrifugal compressor - Google Patents
Inlet guide vane adjusting device and centrifugal compressor Download PDFInfo
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- CN114738324A CN114738324A CN202210358263.4A CN202210358263A CN114738324A CN 114738324 A CN114738324 A CN 114738324A CN 202210358263 A CN202210358263 A CN 202210358263A CN 114738324 A CN114738324 A CN 114738324A
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- driving
- guide vane
- ring
- drive
- 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, the inner sleeve shell is sleeved in the outer sleeve shell, in order to form first air passage and second air passage, outer guide vane in the outer stator subassembly passes through the second pivot and rotates the setting at the second air passage, the second pivot has the second drive shaft section that extends to the outside of outer cover shell, interior guide vane in the interior stator subassembly rotates through first pivot and sets up in first air passage, first pivot has the first drive shaft section that extends to the outside of outer cover shell, drive arrangement is used for driving a plurality of first drive shaft sections synchronous rotation and a plurality of second drive shaft section synchronous rotation respectively, the hierarchical regulation to the intake has been realized, thereby the inaccurate problem of current compressor intake control has been 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 drives the rotating shaft through the driving device so as to drive the inlet guide vane to rotate in the air duct, thereby controlling the opening degree of the inlet guide vane in the air duct, and further achieving the purpose of controlling the air intake, however, the opening degree of the inlet guide vane generally changes between 0 degree and 90 degrees, small angle errors all cause inaccurate control of the air intake, the requirement of the control mode on the driving device is large, and the existing air compressor often cannot accurately control the air intake.
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 of the existing air compressor is not accurately controlled.
To achieve the above object, the present invention provides an inlet guide vane adjusting apparatus comprising:
the outer sleeve shell extends along the vertical 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 along the circumferential direction, and the plurality of first rotating through holes and the plurality of second rotating through holes are arranged at intervals in the vertical direction;
the inner sleeve shell is sleeved in the outer sleeve shell at intervals, a first air passing channel is formed in an inner cavity of the inner sleeve shell, a second air passing channel 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 the plurality of first rotating through holes;
a plurality of interior stator subassemblies, each interior stator subassembly includes first pivot and interior guide vane, first pivot along the level to the axis rotate locate corresponding first rotate the through-hole with first cooperation through-hole, first pivot including extend to the first driving shaft section in the outer cover shell outside, interior guide vane locate first air passing channel, and locate first pivot keep away from the one end of first driving shaft section, on the rotation stroke of first driving shaft section, the corresponding interior guide vane can the upset activity and have first closed position and first expansion position, when a plurality of interior guide vane all is in first closed position, a plurality of interior guide vane all extends and end to end abutment along the radial of outer cover shell, cooperate jointly to seal first air passing channel, when a plurality of interior guide vane all is in first expansion position, the inner guide vanes extend along the axial direction of the outer sleeve shell and jointly open the first air passing channel;
a plurality of outer guide vane assemblies, each outer guide vane assembly comprises a second rotating shaft and an outer guide vane, the second rotating shaft is rotatably arranged in the corresponding second rotating through hole along the horizontal axis, the second rotating shaft comprises a second driving shaft section extending to the outer side of the outer sleeve shell, the outer guide vane is arranged in the second air passing channel and is 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 vane can be turned and moved and has a second closed position and a second unfolded position, when the plurality of outer guide vanes are all arranged at the second closed position, the plurality of outer guide vanes are all extended along the radial direction of the outer sleeve shell and are abutted end to end, the second air passing channel is sealed in a common matching way, and when the plurality of outer guide vanes are all arranged at the second unfolded position, the plurality of outer guide vanes extend along the axial direction of the outer sleeve shell and open the second air passing channel together; and the number of the first and second groups,
the driving device is used for respectively driving the first driving shaft sections to synchronously rotate and the second driving shaft sections to synchronously rotate;
when the plurality of inner guide blades are positioned at the first unfolding position, the driving device drives the plurality of second driving shaft sections to rotate so as to drive the plurality of outer guide blades to rotate from the second closing position to the second unfolding position, so that the air intake is increased;
the driving device drives the second driving shaft sections to rotate firstly so as to drive the outer guide blades to rotate to the second closed position from the second unfolded position, and when the outer guide blades are positioned at the second closed position, the driving device drives the second driving shaft sections to rotate to drive the inner guide blades to rotate to the first closed position from the first unfolded position so as to reduce the air intake.
Optionally, the inlet guide vane adjusting device further comprises a plurality of connection supporting blocks, the connection supporting blocks are arranged at intervals along the circumferential direction of the second air passing channel, 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 connection supporting block extends vertically; and/or the presence of a gas in the gas,
the connection supporting block is provided with a yielding through hole, and the yielding through hole is communicated to the corresponding first rotation through hole and the first matching through hole.
Optionally, the connection support block is located below the outer guide vane in the up-down direction.
Optionally, correspond a plurality of the second rotates the through-hole, be equipped with a plurality of recesses of accepting on the lateral wall of interior cover shell, outer stator blade is corresponding it is equipped with accepts the lug to accept the recess, accept the lug along corresponding the axial rotation of first pivot sets up in corresponding accept the recess.
Optionally, the drive device comprises:
the first guide pieces are respectively connected to the corresponding first driving shaft sections, first guide holes are formed in the first guide pieces and face the outer sleeve shell, and the first guide holes are arranged in a long shape along the vertical direction;
the driving ring is sleeved on the outer side wall of the outer sleeve shell in a rotating mode along the vertical axis and corresponds to the first transmission 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 matched with and extend into the corresponding first transmission holes; and (c) a second step of,
and the driving assembly is used for driving the driving ring to rotate.
Optionally, the first transmission hole comprises a driving matching hole section and a abdicating extension hole section, the driving matching hole section is arranged in an arc shape, and the abdicating extension hole section is arranged in a linear extension manner;
the rotation stroke of the driving ring comprises a driving adjusting stroke and a driving connecting stroke;
the driving device further includes:
the second transmission pieces are respectively connected to the corresponding second driving shaft sections, second transmission holes are formed in the second transmission pieces towards the outer sleeve shell, and the second transmission holes are arranged in a long shape along the vertical direction;
the driven ring is sleeved on the outer side wall of the outer sleeve shell in a rotating mode along the vertical axis and corresponds to the second transmission holes, a plurality of second driving rods are arranged on the peripheral side wall of the driven ring at intervals and are adapted to extend into the corresponding second transmission holes, and a plurality of outer guide vanes are changed between a second closed position and a second unfolded position on the rotating stroke of the driven ring;
a drive coupling assembly for coupling the drive ring to the driven ring when the drive ring is in the drive coupling stroke; and the number of the first and second groups,
a reset drive assembly to drive the driven ring from the second deployed position to the second closed position;
wherein when the drive ring is in the drive adjustment stroke, the plurality of first drive bars are in the corresponding drive mating bore segments, and the plurality of 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 plurality of first driving rods are located at the corresponding abdicating extension hole sections, the plurality of inner guide blades are located at the first unfolding position, the driving ring is in transmission driving connection with the driven ring, and the plurality of outer guide blades are converted between the second closing position and the second unfolding position.
Optionally, 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 coupling assembling includes a plurality of conduction structures, and a plurality of conduction structures are the interval setting along the circumference of drive ring, each conduction structure includes:
the conducting lug is arranged on one opposite end face of the driving ring and the driven ring; and the number of the first and second groups,
the conduction groove is arranged on the other opposite end surface of the driving ring and the driven ring, and is arranged in a long shape in the rotation circumferential direction of the driving ring;
wherein the plurality of conductive bumps and the corresponding sidewalls of the conductive groove abut against each other when the drive ring is in the drive deployed position.
Optionally, the driven ring has a driven closed position that drives the plurality of outer guide vanes in the second closed position over a rotational stroke 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 return spring are respectively arranged on the two connecting convex blocks; and the number of the first and second groups,
the two limiting lugs are oppositely arranged and are respectively arranged on the outer sleeve shell and the driven ring;
wherein the two limit tabs abut each other when the driven ring is in the driven closed position.
The invention also provides a centrifugal compressor which comprises the inlet guide vane adjusting device.
In the technical scheme provided by the invention, the inner sleeve shell is sleeved in the outer sleeve shell, so that the air passing channel is divided into the first air passing channel and the second air passing channel, the inner guide vane is arranged in the first air passing channel, the outer guide vane is arranged in the second air passing channel, the inner guide vane and the outer guide vane are connected to the driving device through the first rotating shaft and the second rotating shaft respectively, and the driving device drives the inner guide vane and the outer guide vane to rotate respectively so as to perform two-stage control on the air intake, so that the precision requirement on the driving and adjusting of the driving device is reduced, the accurate control on the air intake is improved, and compared with the prior art that only one-stage larger inlet guide vane is arranged, the inner guide vane and the outer guide vane arranged in the technical scheme of the invention are respectively provided with rotating shaft connection, the connection strength is higher, the bearing capacity is also higher, and harmful vibration is not easy to occur.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of an inlet guide vane adjusting apparatus provided by the present invention;
FIG. 2 is a schematic structural view of another view of the inlet guide vane adjusting apparatus of FIG. 1;
FIG. 3 is a schematic view of an assembly structure of the outer sleeve shell, the inner sleeve shell and the connection support block in FIG. 1;
FIG. 4 is a schematic view of the connection support block of FIG. 1;
FIG. 5 is a schematic structural view of the inner guide vane assembly of FIG. 1;
FIG. 6 is a schematic structural view of the outer guide vane assembly of FIG. 1;
fig. 7 is a schematic structural view of the first conductive member of fig. 1;
FIG. 8 is a schematic view of the assembly of the drive ring and the driven ring of FIG. 1;
FIG. 9 is a schematic view of the active ring of FIG. 8;
fig. 10 is a schematic view of the driven ring of fig. 8.
The reference numbers indicate:
the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
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.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment 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 relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The adjustment of the air intake volume of the existing air compressor drives the rotating shaft through the driving device to drive the inlet guide vane to rotate in the air duct, so that the opening degree of the inlet guide vane in the air duct is controlled, and further the purpose of controlling the air intake volume is achieved, however, the opening degree of the inlet guide vane generally changes from 0 degree to 90 degrees, small angle errors all cause inaccurate control of the air intake volume, the requirement of the control mode on the driving device is large, and the existing air compressor often cannot accurately control the air intake volume.
In view of this, the present invention provides an inlet guide vane adjusting device and a centrifugal compressor, which aim to solve the problem of inaccurate control of the intake air rate of the conventional air compressor, wherein fig. 1 to 10 are schematic structural diagrams of an embodiment provided by the present invention.
Referring to fig. 1 to 6, the inlet guide vane adjusting device 100 includes an outer cylindrical shell 1, an inner cylindrical shell 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 cylindrical shell 1 extends in an up-down direction, a plurality of first rotation through holes 11 and a plurality of second rotation through holes 12 are circumferentially arranged on a side wall of the outer cylindrical shell 1 at intervals, and the plurality of first rotation through holes 11 and the plurality of second rotation 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 passing channel is formed in an inner cavity of the inner sleeve shell 2, a second air passing channel 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 the plurality of first rotating through holes 11; each inner guide vane assembly 4 comprises a first rotating shaft 42 and an inner guide vane 41, the first rotating shaft 42 is rotatably disposed in the corresponding first rotating through hole 11 and the first matching through hole 21 along the horizontal axis, 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 vane 41 is disposed in the first air passing channel and is disposed 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 vane 41 can be moved in a turning manner and has a first closed position and a first open position, when the plurality of inner guide vanes 41 are all located at the first closed position, the plurality of inner guide vanes 41 all extend along the radial direction of the outer sleeve shell 1 and abut end to end, and cooperate and close the first air passing channel together, and when the plurality of inner guide vanes 41 are all located at the first open position, the inner guide vanes 41 extend along the axial direction of the outer sleeve shell 1 to jointly open the first air passing channel; each outer guide vane assembly 5 comprises a second rotating shaft 52 and an outer guide vane 51, the second rotating shaft 52 is rotatably disposed in the corresponding second rotating through hole 12 along a horizontal axis, the second rotating shaft 52 comprises a second driving shaft section 521 extending to the outer side of the outer jacket shell 1, the outer guide vane 51 is disposed in the second air passing channel and is disposed at one end of the second rotating shaft 52 far away from the second driving shaft section 521, on the rotating stroke of the second driving shaft section 521, the corresponding outer guide vane 51 can be turned over and moved and has a second closed position and a second open position, when the plurality of outer guide vanes 51 are all in the second closed position, the plurality of outer guide vanes 51 all extend along the radial direction of the outer jacket shell 1 and abut end to end, cooperate to close the second air passing channel, when the plurality of outer guide vanes 51 are all in the second open position, the plurality of outer guide vanes 51 extend along the axial direction of the outer sleeve shell 1 to jointly open the second air passing channel; the driving device 6 is configured to drive the first driving shaft segments 421 and the second driving shaft segments 521 to rotate synchronously; the driving device 6 drives the first driving shaft sections 421 to rotate so as to drive the inner guide blades 41 to rotate from the first closed position to the first open position, and when the inner guide blades 41 are located at the first open position, the driving device 6 drives the second driving shaft sections 521 to rotate so as to drive the outer guide blades 51 to rotate from the second closed position to the second open position, so as to increase the intake air amount; the driving device 6 drives the plurality of second driving shaft sections 521 to rotate so as to drive the plurality of outer guide blades 51 to rotate from the second unfolded position to the second closed position, and when the plurality of outer guide blades 51 are located at the second closed position, the driving device 6 drives the plurality of first driving shaft sections to rotate so as to drive the plurality of inner guide blades 41 to rotate from the first unfolded position to the first closed position, so as to reduce the intake air amount.
In the technical solution provided by the present invention, the inner sleeve shell 2 is sleeved in the outer sleeve shell 1, so that the air passing channel is divided into the first air passing channel and the second air passing channel, the inner guide vane 41 is further arranged in the first air passing channel, the outer guide vane 51 is arranged in the second air passing channel, 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 driving device 6 is used to respectively drive the inner guide vane 41 and the outer guide vane 51 to rotate, so as to perform a second-stage control on the air intake, thereby reducing the precision requirement on the driving adjustment of the driving device 6, and also improving the accurate control on the air intake, in addition, compared with the prior art in which only one-stage larger inlet guide vane is arranged, the inner guide vane 41 and the outer guide vane 51 which are arranged in the technical solution of the present invention have rotating shaft connection respectively And the connecting strength is higher, the bearing capacity is also stronger, and harmful vibration is not easy to occur.
It should be noted that, in this embodiment, the specific driving mode of the driving device 6 is not limited as long as it can drive the plurality of first driving shaft segments 421 to rotate synchronously and the plurality of second driving shaft segments 521 to rotate synchronously. Meanwhile, in order to ensure that the outer guide blades 51 are located at the second closed position and can effectively block the second air passing channel, a plurality of connecting platforms are arranged on the inner sleeve shell 2 at positions corresponding to the plurality of outer guide blades 51 so as to correspondingly abut against one end, facing the inner sleeve shell 2, of the outer guide blades 51, and the control effect on the air intake is ensured.
It can be understood that there are various forms of fixing the relative position of the inner sleeve shell 2 and the outer sleeve shell 1, the relative position may be limited by connecting a plurality of the first rotating shafts 42, or may be fixed by connecting a fixing member, please refer to fig. 3 and 4, in this embodiment, the inlet guide vane adjusting device 100 further includes a plurality of connecting support blocks 3, the plurality of connecting support blocks 3 are arranged at intervals along the circumferential direction of the second air passing channel, one end of the connecting support block 3 is arranged on the inner sleeve shell 2, and the other end is arranged on the outer sleeve shell 1. The connection and fixation of the connection supporting block 3 make the whole structure of the device more stable. It can be understood that the connection support block 3, the inner sleeve shell 2 and the outer sleeve shell 1 may be integrally formed or detachably connected.
Further, referring to fig. 4, in this embodiment, the connection supporting block 3 extends upward and downward, so that the blocking effect on the intake air can be effectively reduced.
In another embodiment, the connection support block 3 is provided with a relief through hole 31, and the relief through hole 31 is communicated with the corresponding first rotation through hole 11 and the corresponding first matching through hole 21. With the above arrangement, the longer first rotating shaft 42 can be protected and supported by the connection support block 3, so that the rotation of the first rotating shaft 42 is more stable, and the rotation of the inner guide vane 41 can be more accurately opened and closed.
It should be noted that, according to the above two parallel technical features, "the connection supporting block 3 extends up and down" 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 corresponding first matching through hole 21" may be alternatively or simultaneously arranged, which is obvious and has a better effect.
Further, in the present embodiment, the connection supporting block 3 is located below the outer guide vane 51 in the vertical direction, so that the influence of the connection supporting block 3 on the second wind passing channel can be minimized.
Since the choke area of the outer guide vane 51 is large, in order to ensure that the outer guide vane 51 blocks wind stably, please refer to fig. 3 and 6, in this embodiment, a plurality of receiving grooves 22 are disposed on the outer side wall of the inner sleeve shell 2 corresponding to the plurality of second rotating through holes 12, a receiving protrusion 53 is disposed on the outer guide vane 51 corresponding to the receiving groove 22, and the receiving protrusion 53 is rotatably disposed on the corresponding receiving groove 22 along the axial direction of the corresponding first rotating shaft 42. The two ends of the outer guide vane 51 are connected, so that the wind resistance stability of the outer guide vane 51 is effectively improved.
Referring to fig. 1, fig. 2 and fig. 7, in the present embodiment, the driving device 6 includes a plurality of first guiding elements 62, a driving ring 61 and a driving assembly, the plurality of first guiding elements 62 are respectively connected to the corresponding first driving shaft segments 421, the first guiding elements 62 are provided with first guiding holes 621 facing the outer sleeve shell 1, and the first guiding holes 621 are arranged in a long shape along the up-down direction; the driving ring 61 is rotatably sleeved on the outer side wall of the outer sleeve shell 1 along the vertical axis and corresponds to the plurality of first transmission holes 621, a plurality of first driving rods 611 are arranged on the peripheral side wall of the driving ring 61 at intervals, and the first driving rods 611 are adapted to extend into the corresponding first transmission holes 621; the driving assembly is used for driving the driving ring 61 to rotate. The driving ring 61 is driven to rotate by the driving assembly, so that the first driving rod 611 drives the first guiding element 62 to swing, and further drives the first rotating shaft 42 to rotate, and finally, the synchronous rotation of the plurality of inner guiding blades 41 is achieved.
It is understood that the first conducting member 62 can be connected to the first driving shaft segment 421 by a key connection or a pin connection.
The embodiment of the present invention does not limit the specific form of the driving assembly, and the driving assembly may be in a form of motor gear driving, or in a form of hydraulic driving, as long as the driving assembly can drive the driving ring 61 to rotate.
Further, referring to fig. 7 to 10, in the present embodiment, the first conductive hole 621 includes a driving matching hole segment 6211 and an offset extending hole segment 6212, the driving matching hole segment 6211 is disposed in an arc shape, and the offset extending hole segment 6212 is linearly extended; the rotation stroke of the driving ring 61 comprises a driving adjustment stroke and a driving connection stroke; the driving device 6 further includes a plurality of second transmission members 64, a driven ring 63, a driving connection assembly 65 and a reset driving assembly 66, the plurality of second transmission members 64 are respectively connected to the corresponding second driving shaft sections 521, the second transmission members 64 are provided with second transmission holes 641 facing the outer sleeve shell 1, and the second transmission holes 641 are disposed in a long shape along the vertical direction; the driven ring 63 is rotatably sleeved on the outer side wall of the outer sleeve shell 1 along the vertical axis and corresponds to the plurality of second transmission holes 641, a plurality of second driving rods 631 are arranged on the peripheral side wall of the driven ring 63 at intervals, the second driving rods 631 are adapted to extend into the corresponding second transmission holes 641, and the plurality of outer guide vanes 51 are changed between the second closed position and the second unfolded position on the rotation stroke of the driven ring 63; the drive connecting assembly 65 is used for connecting the drive ring 61 and the driven ring 63 when the drive ring 61 is in the drive connecting stroke; the reset drive assembly 66 is configured to drive the driven ring 63 from the second deployed position to the second closed position; wherein when the drive ring 61 is in the drive adjustment stroke, the plurality of first drive rods 611 are in the corresponding drive mating bore segments 6211, and the plurality of inner guide vanes 41 transition between the first closed position and the first deployed position; when the driving ring 61 is in the driving connection stroke, the plurality of first driving rods 611 are in the corresponding abdicating extension hole sections 6212, the plurality of inner guide vanes 41 are in the first extended position, the driving ring 61 is in transmission driving connection with the driven ring 63, and the plurality of outer guide vanes 51 are converted between the second closed position and the second extended position.
The driving ring 61 and the driven ring 63 are connected and limited by the driving connecting assembly 65, so that the driving ring 61 can drive the driven ring 63 to rotate, therefore, only one set of driving components is needed to be arranged, the complexity and the production cost of the device are greatly reduced, moreover, the first transmission hole 621 of the first transmission guide member 62 is arranged into a circular arc-shaped driving matching hole section 6211 and a linearly extending abdicating extending hole section 6212, so that the first driving rod 611 can smoothly drive the first transmission member 62 to swing, when the driving ring 61 rotates to the driving connection stroke, the first driving rod 611 is just positioned in the abdicating extending hole segment 6212, so that the first guide member 62 can be restrained while the driving ring 61 continues to rotate, and the inner guide vanes 41 are continuously maintained at the first deployed position; meanwhile, when the driving ring 61 is driven by the driving assembly to rotate reversely, the connection of the driving connection assembly 65 is disconnected, and the reset driving assembly 66 can reset and rotate the driving driven ring 63 to the initial position, so that the outer guide vanes 51 rotate to the second closed position.
It should be noted that different positions of the inner surface of the driving fitting hole segment 6211 are adaptively rounded corresponding to different driving positions of the first driving rod 611 segment, so as to always fit and abut against the peripheral side surface of the first driving rod 611 segment; meanwhile, the present embodiment does not limit the specific forms of the driving connection assembly 65 and the reset driving assembly 66 as long as the respective functions can be realized.
It will be appreciated that the length of the offset bore segment 6212 is compatible with the length of travel of the drive ring 61 to drive the driven ring 63.
Further, it can be understood that the specific form of the driving connection assembly 65 is various, and may be a snap connection or a magnetic attraction connection, however, the above structural forms are often set to be complicated, which is not favorable for the stability of the transmission, and based on this, referring to fig. 8 to 10, in the present embodiment, in the driving adjustment stroke, the driving ring 61 has a driving deployment position for driving the plurality of inner guide blades 41 to the first deployment position; the driving connection assembly 65 includes a plurality of conducting structures 651, the plurality of conducting structures 651 are disposed at intervals along the circumferential direction of the driving ring 61, each conducting structure 651 includes a conducting protrusion 6511 and a conducting groove 6512, the conducting protrusion 6511 is disposed on one of the opposite end surfaces of the driving ring 61 and the driven ring 63; the transmitting groove 6512 is provided on the other of the opposite end surfaces of the driving ring 61 and the driven ring 63, and the transmitting groove 6512 is provided in an elongated shape in the rotational direction of the driving ring 61; wherein a plurality of the conductive bumps 6511 and the corresponding sidewalls of the conductive grooves 6512 abut each other when the drive ring 61 is in the drive deployed position. The conductive bump 6511 and the conductive groove 6512 are linked in a butting manner, so that the mode is simple, the driving is stable, and the reliability is high.
It is understood that the plurality of conductive bumps 6511 and the plurality of conductive grooves 6512 may be disposed on different opposite end surfaces, or disposed on two opposite end surfaces in a staggered manner.
In another embodiment, the driven ring 63 has a driven closed position that drives the plurality of outer guide vanes 51 to the second closed position over 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 arranged oppositely, and the two connecting lugs 661 are respectively arranged on the outer sleeve shell 1 and the driven ring 63; two ends of the return spring 662 are respectively arranged on the two connecting convex blocks 661; the two limiting lugs 663 are oppositely arranged, and the two limiting lugs 663 are respectively arranged on the outer sleeve shell 1 and the driven ring 63; wherein the two limit projections 663 abut against each other when the driven ring 63 is in the driven closed position. With this arrangement, the return spring 662 is always in tension, and can stably drive the driven ring 63 to return to rotation, and it can be understood that the return driving assemblies 66 may be provided in a plurality of sets at intervals around the circumferential side of the driven ring 63 in order to further ensure stable return of the driven ring 63. In other embodiments, the reset actuator assembly 66 may also be in the form of a magnetically actuated reset.
Further, the reset driving components 66 are arranged in a plurality of groups at intervals along the axial direction of the housing sleeve 1.
In another embodiment, the limit projection 663 is arranged corresponding to the second rotating shaft 52, and when the driven ring 63 is in the driven closed position, the limit projection 663 abuts against the side wall of the second rotating shaft 52, so that another limit projection is not arranged on the side wall of the outer shell 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, for the structure of the inlet guide vane adjusting device 100 in the centrifugal compressor 1000, reference may be made to the above-mentioned embodiment of the inlet guide vane adjusting device 100, and details are not repeated here; since the centrifugal compressor 1000 provided by the present invention uses the inlet guide vane adjusting device 100, the embodiment of the centrifugal compressor 1000 provided by the present invention includes all technical solutions of all embodiments of the inlet guide vane adjusting device 100, and the achieved technical effects are also completely the same, and are not described herein again.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An inlet guide vane adjustment arrangement for a centrifugal compressor, the inlet guide vane adjustment arrangement comprising:
the outer sleeve shell extends along the vertical 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 along the circumferential direction at intervals, and the plurality of first rotating through holes and the plurality of second rotating through holes are arranged at intervals in the vertical direction;
the inner sleeve shell is sleeved in the outer sleeve shell at intervals, a first air passing channel is formed in an inner cavity of the inner sleeve shell, a second air passing channel 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 the plurality of first rotating through holes;
a plurality of interior stator subassemblies, each interior stator subassembly includes first pivot and interior guide vane, first pivot along the level to the axis rotate locate corresponding first rotate the through-hole with first cooperation through-hole, first pivot including extend to the first driving shaft section in the outer cover shell outside, interior guide vane locate first air passing channel, and locate first pivot keep away from the one end of first driving shaft section, on the rotation stroke of first driving shaft section, the corresponding interior guide vane can the upset activity and have first closed position and first expansion position, when a plurality of interior guide vane all is in first closed position, a plurality of interior guide vane all extends and end to end abutment along the radial of outer cover shell, cooperate jointly to seal first air passing channel, when a plurality of interior guide vane all is in first expansion position, the inner guide vanes extend along the axial direction of the outer sleeve shell and jointly open the first air passing channel;
a plurality of outer stator subassemblies, each outer stator subassembly includes second pivot and outer guide vane, the second pivot is rotated along the level to the axis and is located the second that corresponds rotates the through-hole, the second pivot includes the second driving shaft section that extends to the outside of outer sleeve shell, outer guide vane locates the second passageway of crossing wind, and locates the second pivot is kept away from the one end of second driving shaft section, on the rotation stroke of second driving shaft section, the corresponding outer guide vane can the upset activity and have second closed position and second expansion position, when a plurality of outer guide vane all is in the second closed position, a plurality of outer guide vane all follows the radial extension of outer sleeve shell and head and the tail abut against, cooperate jointly and seal the second passageway of crossing wind, when a plurality of outer guide vane all is in the second expansion position, the outer guide vanes extend along the axial direction of the outer sleeve shell and jointly open the second air passing channel; and the number of the first and second groups,
the driving device is used for respectively driving the first driving shaft sections to synchronously rotate and the second driving shaft sections to synchronously rotate;
when the plurality of inner guide blades are positioned at the first unfolding position, the driving device drives the plurality of second driving shaft sections to rotate so as to drive the plurality of outer guide blades to turn from the second closing position to the second unfolding position, so that the air inlet amount is increased;
the driving device drives the second driving shaft sections to rotate firstly so as to drive the outer guide blades to rotate to the second closed position from the second unfolded position, and when the outer guide blades are positioned at the second closed position, the driving device drives the second driving shaft sections to rotate to drive the inner guide blades to rotate to the first closed position from the first unfolded position so as to reduce the air intake.
2. The inlet guide vane adjusting device according to claim 1, further comprising a plurality of connection support blocks, the connection support blocks being disposed at intervals along a circumferential direction of the second air passing passage, one end of the connection support block being disposed on the inner cylindrical shell, and the other end of the connection support block being disposed on the outer cylindrical shell.
3. The inlet guide vane adjusting device according to claim 2, wherein the connection support block is provided to extend in an up-down direction; and/or the presence of a gas in the atmosphere,
the connection supporting block is provided with a yielding through hole, and the yielding through hole is communicated to the corresponding first rotation through hole and the first matching through hole.
4. The inlet guide vane adjusting device according to claim 3, wherein the connection support block is located below the outer guide vane in an up-down direction.
5. The inlet guide vane adjusting device according to claim 1, wherein a plurality of receiving grooves are provided on an outer side wall of the inner cylindrical shell corresponding to a plurality of the second rotating through holes, and a receiving protrusion is provided on the outer guide vane corresponding to the receiving groove, and is rotatably provided on the corresponding receiving groove along an axial direction of the corresponding first rotating shaft.
6. The inlet guide vane adjusting apparatus as set forth in claim 1 wherein said drive apparatus comprises:
the first guide pieces are respectively connected to the corresponding first driving shaft sections, first guide holes are formed in the first guide pieces and face the outer sleeve shell, and the first guide holes are arranged in a long shape along the vertical direction;
the driving ring is sleeved on the outer side wall of the outer sleeve shell in a rotating mode along the vertical axis and corresponds to the first guide 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 matched with and extend into the corresponding first guide holes; and the number of the first and second groups,
and the driving assembly is used for driving the driving ring to rotate.
7. The inlet guide vane adjusting device according to claim 6, wherein the first transmission hole comprises a driving fitting hole section and a abdicating extension hole section, the driving fitting hole section is arranged in an arc shape, and the abdicating extension hole section is arranged in a straight line;
the rotation stroke of the driving ring comprises a driving adjusting stroke and a driving connecting stroke;
the driving device further includes:
the second transmission pieces are respectively connected to the corresponding second driving shaft sections, second transmission holes are formed in the second transmission pieces towards the outer sleeve shell, and the second transmission holes are arranged in a long shape along the vertical direction;
the driven ring is sleeved on the outer side wall of the outer sleeve shell in a rotating mode along the vertical axis and corresponds to the second transmission holes, a plurality of second driving rods are arranged on the peripheral side wall of the driven ring at intervals and are adapted to extend into the corresponding second transmission holes, and a plurality of outer guide vanes are changed between the second closed position and the second unfolded position on the rotating stroke of the driven ring;
a drive connection assembly for connecting the drive ring with the driven ring when the drive ring is in the drive connection stroke; and the number of the first and second groups,
a reset drive assembly to drive the driven ring from the second open 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 corresponding drive engagement hole segments and a plurality of the inner guide vanes transition between the first closed position and the first open position;
when the driving ring is in the driving connection stroke, the plurality of first driving rods are located at the corresponding abdicating extension hole sections, the plurality of inner guide blades are located at the first unfolding position, the driving ring is in transmission driving connection with the driven ring, and the plurality of outer guide blades are converted between the second closing position and the second unfolding position.
8. The inlet guide vane adjusting apparatus according to 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 coupling assembling includes a plurality of conduction structures, and is a plurality of the conduction structure is the interval along the circumference of drive ring sets up, each the conduction structure includes:
the conducting lug is arranged on one opposite end face of the driving ring and the driven ring; and the number of the first and second groups,
the conduction groove is arranged on the other opposite end surface of the driving ring and the driven ring, and is arranged in a long shape in the rotation circumferential direction of the driving ring;
wherein when the drive ring is in the drive deployed position, the plurality of conductive bumps and the corresponding conductive groove side walls abut against each other.
9. The inlet guide vane setting apparatus of claim 7, wherein the driven ring has a driven closed position that drives a plurality of the outer guide vanes in the second closed position over a rotational stroke 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; and the number of the first and second groups,
the two limiting lugs are oppositely arranged and are respectively arranged on the outer sleeve shell and the driven ring;
wherein the two limit tabs abut each other when the driven ring is in the driven closed position.
10. A centrifugal compressor comprising an inlet guide vane adjustment arrangement according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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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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| Application Number | Priority Date | Filing Date | Title |
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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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| CN114738324B CN114738324B (en) | 2023-09-22 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114738324B (en) | 2023-09-22 |
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