CN111664110B - Compressor inlet guide vane adjusting mechanism and control method thereof - Google Patents
Compressor inlet guide vane adjusting mechanism and control method thereof Download PDFInfo
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- CN111664110B CN111664110B CN202010451484.7A CN202010451484A CN111664110B CN 111664110 B CN111664110 B CN 111664110B CN 202010451484 A CN202010451484 A CN 202010451484A CN 111664110 B CN111664110 B CN 111664110B
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- guide vane
- inlet guide
- rotating shaft
- compressor
- rotating
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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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
Abstract
The invention discloses a compressor inlet guide vane adjusting mechanism and a control method thereof, which are applicable to the field of testing of a centrifugal compressor of a compressed air energy storage system. The invention has the main advantages that the inlet guide vane adjusting mechanism is manually adjusted, and has no complex actuating mechanism, transmission link mechanism and the like, thereby effectively reducing the complexity of the device; the inlet guide vane adjusting mechanism is provided with a dial, a metal pointer and the like, so that control errors caused by a pneumatic/electric actuating mechanism can be avoided, and the accuracy of a compressor test result is improved.
Description
Technical Field
The invention belongs to the technical field of compressed air energy storage compressor testing, relates to an inlet guide vane adjusting mechanism, and particularly relates to an inlet guide vane adjusting mechanism of a compressor and a control method thereof, which can effectively reduce the complexity of an actuating mechanism, avoid control errors caused by a pneumatic/electric actuating mechanism, and improve the accuracy of a compressor testing result.
Background
The compressed air energy storage technology is considered to be one of the most potential large-scale physical energy storage technologies, a centrifugal compressor is usually selected as a compressor used in a system, and experiments and detection on the pneumatic and mechanical properties of the compressor are necessary to be carried out to know the internal flow and heat transfer coupling rule, so that the requirement of the compressed air energy storage system on high efficiency and wide working conditions is met, and the key scientific problem in the air energy storage compression system is solved.
At present, an adjustable inlet guide vane mechanism is mostly adopted for variable working condition adjustment of a centrifugal compressor, and an actuating mechanism is in a pneumatic or electric type, so that the requirement on adjustment precision in the industry can be met. However, in the testing process of the compressor, the pneumatic or electric actuating mechanism has the problems of low control precision, flexible connecting rod and the like, so that the angle error of the inlet guide vane is increased, and the accuracy of the testing result is further reduced.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention aims to provide a manual inlet guide vane adjusting mechanism and a control method thereof, which can effectively reduce the complexity of an actuating mechanism, avoid control errors caused by a pneumatic/electric actuating mechanism and improve the accuracy of a compressor test result.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a compressor inlet guide vane adjusting mechanism comprises an inlet guide vane cylinder and a plurality of inlet guide vane blades evenly arranged on the inlet guide vane cylinder along the circumferential direction, the blade root of each inlet guide vane blade is formed into a rotating shaft, the rotating shaft at the blade root of each inlet guide vane blade is arranged on the inlet guide vane cylinder in an angle-adjustable manner through a manual adjusting mechanism, and the compressor inlet guide vane adjusting mechanism is characterized in that,
each manual adjusting mechanism at least comprises a pressing sleeve and a rotating handle, wherein,
the pressure sleeve is integrally cylindrical, a mounting flange is formed on the side wall close to the top of the pressure sleeve, a plurality of stepped mounting holes which are in one-to-one correspondence with the pressure sleeve are formed in the inlet guide vane cylinder, each pressure sleeve is fixedly mounted in one corresponding stepped mounting hole through the mounting flange,
a plurality of adjustable set screws are further arranged on the side wall of each pressing sleeve and are all located above the mounting flange, a rotating shaft at the blade root of each inlet guide vane penetrates through the pressing sleeve, and the rotating shaft is fixed or loosened by adjusting the abutting degree between the set screws and the rotating shaft;
the tail end of each rotating shaft is fixedly provided with one rotating handle, each rotating handle at least comprises a rotating disc and a knob part which is concentrically and fixedly arranged on the top surface of the rotating disc, the outer diameter of the rotating disc is at least larger than the inner diameter of the pressing sleeve,
when the installation angle of the inlet guide vane needs to be adjusted, the set screw is rotated to be separated from the rotating shaft, the rotating disc is utilized to support the rotating bearing in the pressing sleeve, and the knob part is rotated to adjust the installation angle;
when the installation angle is adjusted to the target position, the set screw is rotated to be tightly abutted against the side wall of the rotating shaft so as to lock the rotating shaft.
In the inlet guide vane adjusting mechanism of the compressor, the pressure sleeve can be arranged on the inlet guide vane cylinder through the fixing bolt, and the inlet guide vane passes through the pressure sleeve and is fixed or loosened with the pressure sleeve by the fastening screw.
Preferably, the outer diameter of the rotating shaft is matched with the inner diameter of the pressing sleeve, and a plurality of bushings are arranged between the rotating shaft and the pressing sleeve.
Preferably, each mounting flange is provided with a plurality of connecting holes, and each pressing sleeve is fixedly mounted in a corresponding stepped mounting hole through the connecting hole on the mounting flange by using a fastener.
Preferably, when the set screw is rotated to be closely abutted against the side wall of the rotating shaft, the rotating shaft is not rotatable, and when the set screw is rotated to be disengaged from the rotating shaft, the rotating shaft is rotatable.
In the inlet guide vane adjusting mechanism of the compressor, after a rotating shaft of an inlet guide vane blade is fixed with the pressing sleeve by a set screw, a rotating handle can be installed; after the rotating handle is installed in place, the fastening screws are loosened, the rotating handle can drive the inlet guide vane to rotate, and then the installation angle of the inlet guide vane can be adjusted.
Preferably, the tail end of the rotating shaft is provided with a threaded hole, the center of the bottom of the rotating disc is provided with a threaded rod, and the rotating handle is fixedly arranged in the threaded hole of the rotating shaft through the threaded rod.
Preferably, the rotating handle further comprises a pointer fixedly arranged on the rotating disc, a dial used for indicating the installation angle of the inlet guide vane is arranged on the annular end face at the top end of the pressing sleeve along the circumference, the pointer extends to the dial along the radial direction of the rotating disc, and the installation angle of the inlet guide vane is judged according to the position of the pointer on the dial.
Further, calibrating the 0-degree reticle position of the dial according to the actual 0-degree position of the inlet guide vane mounting angle.
Preferably, the number of the set screws on the side wall of the pressing sleeve is at least two, so that the inlet guide vane blade is prevented from being loosened in the testing process of the compressor.
Another technical purpose of the present invention is to provide a control method for the inlet guide vane adjusting mechanism of the compressor, which is characterized in that,
determining inlet guide vane 0 ° position: a rotating shaft of the inlet guide vane passes through the pressing sleeve, and is fixed with the pressing sleeve by a set screw, and then a rotating handle is installed; after the handle is rotated and installed in place, the fastening screw is loosened, and the 0-degree position of the dial inlet guide vane on the pressing sleeve is determined by utilizing the 0-degree tooling of the inlet guide vane.
Adjusting the angle of the inlet guide vane: manually loosening a set screw between the rotating shaft and the pressing sleeve, driving the inlet guide vane to rotate by utilizing the rotating handle, and determining the required angle position of the inlet guide vane according to the angle value indicated by the pointer on the dial; after the required inlet guide vane angle position is determined, the inlet guide vane blade is fixed and a set screw is tightened between the pressing sleeves, so that the testing requirement of the compressor is met.
Compared with the prior art, the inlet guide vane adjusting mechanism of the compressor and the control method thereof have the following advantages: (1) the inlet guide vane adjusting mechanism of the compressor is manually adjusted, does not have a complex actuating mechanism, a transmission connecting rod mechanism and the like, and can effectively reduce the complexity of the device. (2) The inlet guide vane adjusting mechanism of the compressor provided by the invention is provided with a dial, a pointer and the like, can avoid control errors caused by a pneumatic/electric actuating mechanism, and improves the accuracy of a test result of the compressor.
Drawings
FIG. 1 is a schematic view of a compressor inlet guide vane adjustment mechanism of the present invention;
FIG. 2 is a schematic view of the assembly of the pressing sleeve and the rotating handle of the present invention;
FIG. 3 is a schematic view of the assembly of inlet guide vane blades on an inlet guide vane cartridge according to the present invention;
FIG. 4 is a schematic structural view of the press sleeve of the present invention;
fig. 5 is a schematic structural view of a turning handle in the present invention.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1-inlet guide vane cylinder, 2-inlet guide vane blade, 3-pressing sleeve, 31-mounting flange, 32-dial, 4-turning handle, 41-turning disc, 42-knob part, 43-pointer, 44-threaded rod, 5-fixing bolt, 6-set screw I, 7-set screw II, 8/9-bushing and 10-gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 5, the inlet guide vane adjusting mechanism of the compressor provided by the invention comprises a pressing sleeve 3, a rotating handle 4, a fixing bolt 5, a set screw 6/7, a bushing 8/9, a gasket 10 and a plurality of inlet guide vane blades 2 uniformly arranged on an inlet guide vane cylinder 1 along the circumferential direction. The blade root of each inlet guide vane blade 2 is formed into a rotating shaft 21, and the rotating shaft 21 at the blade root of each inlet guide vane blade 2 is arranged on the inlet guide vane cylinder 1 in an angle-adjustable manner through a manual adjusting mechanism. Each manual adjusting mechanism at least comprises a pressing sleeve 3 and a rotating handle 4, wherein the pressing sleeve 3 is integrally cylindrical, a mounting flange 31 is formed on the side wall close to the top of the pressing sleeve 3, a plurality of stepped mounting holes corresponding to the pressing sleeves 3 one by one are formed in the inlet guide vane cylinder 1, each pressing sleeve 3 is fixedly mounted in a corresponding stepped mounting hole through the mounting flange 31, and specifically, the pressing sleeve 3 is mounted on the inlet guide vane cylinder 1 through a fixing bolt 5 and a set screw 7 on the mounting flange 31, as shown in fig. 3; the rotating shaft 21 at the root of the inlet guide vane blade 2 passes through the bushing 8/9, the washer 10 and the pressing sleeve 3, and is fixed or loosened with the pressing sleeve 3 by the set screw 6. The top of the rotating shaft 21 at the blade root of the inlet guide blade 2 is provided with a threaded hole, and after the inlet guide blade 2 and the pressing sleeve 3 are fixed by the fastening screw 6, a rotating handle 4 can be installed; after the rotating handle 4 is installed in place, the set screw 6 is loosened, the rotating handle 4 can drive the inlet guide vane blade 2 to rotate, and then the installation angle of the inlet guide vane can be adjusted. In addition, each rotating handle 4 at least comprises a rotating disc 41 and a knob part 42 concentrically and fixedly arranged on the top surface of the rotating disc 41, the outer diameter of the rotating disc 41 is at least larger than the inner diameter of the pressing sleeve 3, when the installation angle of the inlet guide vane blade 2 needs to be adjusted, the set screw 6 is rotated to be separated from the rotating shaft 21, the rotating disc 41 is utilized to support the rotating shaft 21 in the pressing sleeve 3, and the installation angle is adjusted through rotating the knob part 42; when the installation angle is adjusted to the target position, the set screw 6 is rotated to be closely pressed against the side wall of the turning shaft 21 to lock the turning shaft 21.
In addition, the turning handle 4 further comprises a pointer 43 fixedly arranged on the turning disc 41, a dial 32 for indicating the inlet guide vane mounting angle is circumferentially arranged on the annular end surface of the top end of the pressing sleeve 3, the pointer 43 extends to the dial 32 along the radial direction of the turning disc 41, and the inlet guide vane mounting angle is judged through the position of the pointer 43 on the dial 32. And calibrating the 0-degree reticle position of the dial according to the actual 0-degree position of the mounting angle of the inlet guide vane.
In addition, when the turning handle 4 is mounted on the turning shaft 21, a threaded hole is formed at the end of the turning shaft 21, a threaded rod 44 is formed at the center of the bottom of the turning disc 41, and the turning handle 4 is fixedly disposed in the threaded hole of the turning shaft 21 through the threaded rod 44.
Specifically, the inlet guide vane adjusting mechanism of the compressor needs to determine the position of 0 degree of the inlet guide vane before use, and the specific control method comprises the following steps: a rotating shaft 21 at the blade root of the inlet guide blade 2 penetrates through the pressing sleeve 3, and is fixed with the pressing sleeve 3 by a set screw 6, and then a rotating handle 4 is installed; after the handle 4 is rotated and installed in place, the set screws 6 are loosened, and the 0-degree position of the dial inlet guide vane on the pressing sleeve 3 is determined by utilizing the 0-degree tooling of the inlet guide vane.
Specifically, the control method for adjusting the angle of the inlet guide vane adjusting mechanism of the compressor comprises the following steps: manually loosening a fastening screw 6 between a rotating shaft 21 at the blade root of the inlet guide vane blade 2 and the pressing sleeve 3, driving the inlet guide vane blade 2 to rotate by utilizing a rotating handle 4, and determining the required inlet guide vane angle position according to the angle value indicated by a metal pointer on the rotating handle 4 on a dial of the pressing sleeve 3; after the required inlet guide vane angle position is determined, the set screw 6 between the inlet guide vane blade 2 and the pressing sleeve 3 is fixed, and the testing requirement of the compressor is met.
Referring to fig. 4 and 5, in the inlet guide vane adjusting mechanism of the compressor of the present invention, the dial 32 is provided on the top of the pressing sleeve 3, and the rotating handle 4 is provided with a metal pointer 43 for indicating the inlet guide vane angle; the pressing sleeve 3 is provided with a plurality of fixing bolts to prevent loosening.
The above description is only a preferred embodiment of the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A compressor inlet guide vane adjusting mechanism comprises an inlet guide vane cylinder and a plurality of inlet guide vane blades evenly arranged on the inlet guide vane cylinder along the circumferential direction, the blade root of each inlet guide vane blade is formed into a rotating shaft, the rotating shaft at the blade root of each inlet guide vane blade is arranged on the inlet guide vane cylinder in an angle-adjustable manner through a manual adjusting mechanism, and the compressor inlet guide vane adjusting mechanism is characterized in that,
each manual adjusting mechanism at least comprises a pressing sleeve and a rotating handle, wherein,
the pressure sleeve is integrally cylindrical, a mounting flange is formed on the side wall close to the top of the pressure sleeve, a plurality of stepped mounting holes which are in one-to-one correspondence with the pressure sleeve are formed in the inlet guide vane cylinder, each pressure sleeve is fixedly mounted in one corresponding stepped mounting hole through the mounting flange,
a plurality of adjustable set screws are further arranged on the side wall of each pressing sleeve and are all located above the mounting flange, a rotating shaft at the blade root of each inlet guide vane penetrates through the pressing sleeve, and the rotating shaft is fixed or loosened by adjusting the abutting degree between the set screws and the rotating shaft;
the tail end of each rotating shaft is fixedly provided with one rotating handle, each rotating handle at least comprises a rotating disc and a knob part which is concentrically and fixedly arranged on the top surface of the rotating disc, the outer diameter of the rotating disc is at least larger than the inner diameter of the pressing sleeve,
when the installation angle of the inlet guide vane needs to be adjusted, the set screw is rotated to be separated from the rotating shaft, the rotating disc is utilized to support the rotating bearing in the pressing sleeve, and the knob part is rotated to adjust the installation angle;
when the installation angle is adjusted to the target position, the set screw is rotated to be tightly abutted against the side wall of the rotating shaft so as to lock the rotating shaft.
2. The compressor inlet guide vane adjustment mechanism of claim 1, wherein the outer diameter of the rotating shaft is adapted to the inner diameter of the pressing sleeve with a plurality of bushings disposed therebetween.
3. The compressor inlet guide vane adjusting mechanism of claim 1, wherein each mounting flange is provided with a plurality of connecting holes, and each pressing sleeve is fixedly mounted in a corresponding stepped mounting hole through the connecting hole of the mounting flange by a fastener.
4. The compressor inlet guide vane adjustment mechanism of claim 1, wherein the rotary shaft is non-rotatable when the set screw is rotated to closely abut against a sidewall of the rotary shaft, and rotatable when the set screw is rotated to disengage from abutment with the rotary shaft.
5. The compressor inlet guide vane adjusting mechanism of claim 1, wherein the end of the rotating shaft is provided with a threaded hole, the center of the bottom of the rotating disc is provided with a threaded rod, and the rotating handle is fixedly arranged in the threaded hole of the rotating shaft through the threaded rod.
6. The inlet guide vane adjusting mechanism of a compressor as set forth in claim 1, wherein the rotating handle further includes a pointer fixedly disposed on the rotating disk, a scale for indicating the inlet guide vane installation angle is circumferentially disposed on the annular end surface of the top end of the pressing sleeve, the pointer extends to the scale in the radial direction of the rotating disk, and the inlet guide vane installation angle is determined by the position of the pointer on the scale.
7. The compressor inlet guide vane adjustment mechanism of claim 6, wherein the 0 ° score line position of the dial is calibrated based on an actual 0 ° position of an inlet guide vane setting angle.
8. The compressor inlet guide vane adjustment mechanism of claim 1, wherein the number of set screws on the side wall of the pressure sleeve is at least two to prevent inlet guide vane blade loosening during compressor testing.
9. A method of controlling the inlet guide vane adjusting mechanism of a compressor as set forth in any of claims 1 to 8,
determining inlet guide vane 0 ° position: a rotating shaft of the inlet guide vane passes through the pressing sleeve, and is fixed with the pressing sleeve by a set screw, and then a rotating handle is installed; after the handle is rotated and installed in place, the fastening screw is loosened, the 0-degree position of the inlet guide vane of the dial on the pressing sleeve is determined by utilizing the 0-degree tooling of the inlet guide vane,
adjusting the angle of the inlet guide vane: manually loosening a set screw between the rotating shaft and the pressing sleeve, driving the inlet guide vane to rotate by utilizing the rotating handle, and determining the required angle position of the inlet guide vane according to the angle value indicated by the pointer on the dial; after the required inlet guide vane angle position is determined, the inlet guide vane blade is fixed and a set screw is tightened between the pressing sleeves, so that the testing requirement of the compressor is met.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010451484.7A CN111664110B (en) | 2020-05-25 | 2020-05-25 | Compressor inlet guide vane adjusting mechanism and control method thereof |
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| CN202010451484.7A CN111664110B (en) | 2020-05-25 | 2020-05-25 | Compressor inlet guide vane adjusting mechanism and control method thereof |
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| CN114109843A (en) * | 2021-12-15 | 2022-03-01 | 合肥恒大江海泵业股份有限公司 | Bidirectional tubular pump with adjustable front guide vane |
| CN114370430B (en) * | 2021-12-28 | 2024-03-05 | 沈阳透平机械股份有限公司 | Guide vane actuating mechanism of cylindrical centrifugal compressor |
| CN114215787B (en) * | 2021-12-28 | 2023-06-30 | 沈阳透平机械股份有限公司 | Angle-adjustable partition tongue assembly and centrifugal pump |
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