CN212838610U - Blade diffuser adjustment mechanism - Google Patents
Blade diffuser adjustment mechanism Download PDFInfo
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- CN212838610U CN212838610U CN202020894422.9U CN202020894422U CN212838610U CN 212838610 U CN212838610 U CN 212838610U CN 202020894422 U CN202020894422 U CN 202020894422U CN 212838610 U CN212838610 U CN 212838610U
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- vane
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Abstract
The utility model discloses a blade diffuser adjustment mechanism is applicable to compressed air energy storage system centrifugal compressor test field, including block, rotation handle, holding screw, overcoat, distance cover, deep groove ball bearing, bush, diffuser blade etc. can the manually regulated diffuser blade's installation angle. The utility model has the main advantages that the blade diffuser adjusting mechanism is manually adjusted, and has no complex actuating mechanism, transmission link mechanism and the like, thereby reducing the complexity of the device and avoiding the interference to the flow field in the volute; the blade diffuser adjusting mechanism is provided with a dial, a metal pointer and the like, so that control errors caused by an actuating mechanism can be avoided, and the accuracy of a compressor test result is improved.
Description
Technical Field
The utility model belongs to the technical field of compressed air energy storage centrifugal compressor tests, a blade diffuser adjustment mechanism is related to, concretely relates to blade diffuser adjustment mechanism that can manual regulation.
Background
Compressed air energy storage is considered as one of the most promising large-scale physical energy storage technologies, and a centrifugal compressor is usually selected as the compressor used in the system. The adjustable vane diffuser is one of the main parts of the centrifugal compressor, the performance of the adjustable vane diffuser has important influence on the efficiency, the pressure ratio, the operating condition range and the like of the whole compressor, and the pneumatic performance experiment and detection are necessary to be carried out to meet the requirements of a compressed air energy storage system on high efficiency and wide operating conditions.
The structure of the commonly used adjustable vane diffuser in the prior centrifugal compressor is that a rotating shaft is arranged in the middle of a diffuser vane and is rotationally adjusted through a connecting rod mechanism, and an actuating mechanism adopts a pneumatic or electric type. However, during the centrifugal compressor test, there are the following problems: (1) the pneumatic or electric actuating mechanism has low control precision, and the actual functional relation between the stroke of the actuating mechanism and the angle of the diffuser has larger deviation from a theoretical value, so that the error of a test result is larger; (2) the connecting rod penetrates through the volute to be connected with the actuating mechanism, and the flow field in the volute is interfered, so that the error of a test result is large.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned shortcoming and the not enough that exist among the prior art, the utility model aims to provide a blade diffuser adjustment mechanism can realize stating each the installation angle of diffuser blade and independently adjusting to avoid link mechanism to improve centrifugal compressor test result's the degree of accuracy effectively to the interference in spiral case inside flow field and the control error that actuating mechanism brought.
In order to solve the technical problem, the utility model discloses the technical scheme who takes does:
a vane diffuser adjusting mechanism comprises an annular mounting plate and a plurality of diffuser vanes uniformly arranged on one side of the annular mounting plate along the circumferential direction, and is characterized in that,
the annular mounting plate is uniformly provided with a plurality of mounting holes along the circumferential direction, each diffuser blade is correspondingly arranged in each mounting hole one by one through a blade rotating shaft at the bottom of the diffuser blade, each blade rotating shaft is independently provided with a manual angle adjusting device, each manual angle adjusting device comprises a cover cap, a rotating handle and an outer sleeve, wherein,
each the overcoat is fixed to be set up one in the mounting hole, the one end of overcoat is used for the assembly blade pivot, the other end are used for the assembly the block, the block is fixed to be set up the other end of overcoat, the blade pivot rotationally sets up in the overcoat and its end pass lie in behind overcoat and the block the opposite side of annular mounting panel, it is in to rotate the fixed setting of handle the end of blade pivot, be equipped with a plurality of holding screws on the lateral wall of block.
In the blade diffuser adjusting mechanism, when the set screw is screwed in to be tightly abutted against the side wall of the blade rotating shaft, the blade rotating shaft is in a locked state, when the set screw retreats to be separated from abutting against the side wall of the blade rotating shaft, the blade rotating shaft is in an unlocked state, the rotating handle is used for adjusting the installation angle of the diffuser blade when the blade rotating shaft is in the unlocked state, and after the rotating handle adjusts the installation angle of the diffuser blade to a target angle, the blade rotating shaft is locked through the set screw.
Preferably, the outer sleeve is fixedly disposed in the mounting hole by a fastener such as a screw, and the cap is fixedly mounted on the outer sleeve by external threads thereof.
Preferably, two ends of the blade rotating shaft are respectively provided with a deep groove ball bearing, a distance sleeve is arranged between the two deep groove ball bearings, the outer end face of one deep groove ball bearing abuts against a step portion in the outer sleeve, and the outer end face of the other deep groove ball bearing abuts against the inner end face of the cap.
Preferably, the end of the blade rotating shaft is provided with an external thread, and the rotating handle is fixedly arranged on the external thread at the end of the blade rotating shaft through the internal thread. After the rotating handle is installed in place, the fastening screws are loosened, the rotating handle can drive the diffuser blades to rotate, and then the installation angles of the diffuser blades can be adjusted.
Preferably, a dial is arranged on the outer end face of the cover cap, a pointer is arranged on the rotating handle, and the pointer and the dial are matched with each other to indicate the angle of the installation angle of the diffuser blades.
Preferably, the number of the set screws between the blade rotating shaft and the cover cap is at least two, so that the diffuser blades are prevented from loosening in the compressor testing process.
Compared with the prior art, the utility model discloses a blade diffuser adjustment mechanism has following advantage: (1) the utility model provides a blade diffuser adjustment mechanism is manual regulation, does not have complicated actuating mechanism and transmission link mechanism etc. and when reducing the device complexity, can avoid the interference to the inside flow field of spiral case. (2) The utility model provides a blade diffuser adjustment mechanism possesses calibrated scale, pointer etc. can avoid the control error that actuating mechanism brought, improves the degree of accuracy of compressor test result.
Drawings
Fig. 1 is a schematic structural diagram of a vane diffuser adjusting mechanism of the present invention;
fig. 2 is a schematic view of the overall structure of the manual angle adjusting device of the present invention;
fig. 3 is a sectional view of the manual angle adjusting device of the present invention;
FIG. 4 is a schematic structural view of the middle cap of the present invention;
fig. 5 is a schematic structural view of the middle rotating handle of 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-annular mounting plate, 2-diffuser blade, 3-cap, 4-rotating handle, 5-outer sleeve, 6-set screw, 7-screw, 8/10-deep groove ball bearing, 9-distance sleeve and 11-bushing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. The structure and technical solution of the present invention will be further specifically described below with reference to the accompanying drawings, and an embodiment of the present invention is provided.
Referring to fig. 1-5, the utility model provides a blade diffuser adjustment mechanism mainly includes block 3, rotation handle 4, overcoat 5, holding screw 6, screw 7, deep groove ball bearing 8/10, distance cover 9, bush 11 and evenly arranges a plurality of parts such as a plurality of diffuser blades 2 on annular mounting panel 1 along circumference. Specifically, the blade diffuser adjusting mechanism of the utility model comprises an annular mounting plate 1 and a plurality of diffuser blades 2 evenly arranged at one side of the annular mounting plate 1 along the circumferential direction, the annular mounting plate 1 is evenly provided with a plurality of mounting holes along the circumferential direction, each diffuser blade 2 is correspondingly arranged in each mounting hole one by one through the blade rotating shaft at the bottom of the diffuser blade, each blade rotating shaft is independently provided with a manual angle adjusting device, each manual angle adjusting device comprises a cover cap 3, a rotating handle 4 and an outer sleeve 5, wherein each outer sleeve 5 is fixedly arranged in one mounting hole, one end of the outer sleeve 5 is used for assembling the blade rotating shaft, the other end of the outer sleeve 5 is used for assembling the cover cap 3, the cover cap 3 is fixedly arranged at the other end of the outer sleeve 5, the blade rotating shaft is rotatablely arranged in the outer sleeve 5, and the tail end of the blade rotating shaft passes through the outer sleeve 5 and the cover cap, rotate the fixed end that sets up at the blade pivot of handle 4, be equipped with a plurality of holding screw 6 on the lateral wall of block 3, holding screw 6 precession to when closely butt with the lateral wall of blade pivot, the blade pivot is in lock-out state, holding screw 6 retreats when breaking away from the butt with the lateral wall of blade pivot, the blade pivot is in unlock-out state, it is used for adjusting diffuser blade 2's angle of erection when the blade pivot is in unlock-out state to rotate handle 4, after rotating handle 4 and adjusting diffuser blade 2's angle of erection to the target angle, through holding screw 6 locking blade pivot.
The utility model discloses in the preferred example, overcoat 5 passes through screw 7 to be fixed on diffuser annular mounting panel 1, and cap 3 passes through the screw thread to be installed on overcoat 5, and diffuser blade 2 utilizes holding screw 6 fixed or loosen with cap 3 after passing bush 11, deep groove ball bearing 10, distance cover 9, deep groove ball bearing 8 and cap 3 in overcoat 5. The top of the diffuser blade 2 is provided with an external thread, and after the diffuser blade 2 and the cover cap 3 are fixed by a set 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 diffuser blades 2 to rotate, and then the installation angle of the blade diffuser can be adjusted.
Specifically, the design angle of the vane diffuser needs to be determined before the vane diffuser adjusting mechanism is used, and the specific control method comprises the following steps: the diffuser blade 2 passes through the bushing 11, the deep groove ball bearing 10, the distance sleeve 9, the deep groove ball bearing 8 and the cap 3 in the outer sleeve 5, is fixed with the cap 3 by a set screw 6, and is provided with a rotating handle 4; after the rotating handle 4 is installed in place, the set screw 6 is loosened, and the design angle position of the diffuser blade 2 on the dial of the cap 3 is determined by utilizing the diffuser blade design angle tool.
Specifically, the control method for adjusting the angle of the vane diffuser by the vane diffuser adjusting mechanism comprises the following steps: manually loosening a set screw 6 between the diffuser blade 2 and the cap 3, driving the diffuser blade 2 to rotate by utilizing the rotating handle 4, and determining the required angle position of the blade diffuser according to the angle value indicated by a metal pointer on the rotating handle 4 on the dial disc of the cap 3; after the required angle position of the blade diffuser is determined, a set screw is fastened between the fixed diffuser blade 2 and the cover cap 3, and the testing requirement of the compressor is met.
Referring to fig. 4 and 5, the cap 3 has a dial on the top and the rotating handle 4 is provided with a metal pointer for indicating the vane diffuser angle.
The above description is only a preferred embodiment of the present invention, and various modifications and changes will occur to 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 (6)
1. A vane diffuser adjusting mechanism comprises an annular mounting plate and a plurality of diffuser vanes uniformly arranged on one side of the annular mounting plate along the circumferential direction, and is characterized in that,
the annular mounting plate is uniformly provided with a plurality of mounting holes along the circumferential direction, each diffuser blade is correspondingly arranged in each mounting hole one by one through a blade rotating shaft at the bottom of the diffuser blade, each blade rotating shaft is independently provided with a manual angle adjusting device, each manual angle adjusting device comprises a cover cap, a rotating handle and an outer sleeve, wherein,
each the overcoat is fixed to be set up one in the mounting hole, the one end of overcoat is used for the assembly blade pivot, the other end are used for the assembly the block, the block is fixed to be set up the other end of overcoat, the blade pivot rotationally sets up in the overcoat and its end pass lie in behind overcoat and the block the opposite side of annular mounting panel, it is in to rotate the fixed setting of handle the end of blade pivot, be equipped with a plurality of holding screws on the lateral wall of block.
2. The vane diffuser adjustment mechanism of claim 1 wherein the outer sleeve is fixedly disposed in the mounting hole by a fastener and the cap is fixedly mounted on the outer sleeve by external threads thereof.
3. The blade diffuser adjustment mechanism of claim 1, wherein a deep groove ball bearing is disposed at each end of the blade shaft, a distance sleeve is disposed between the two deep groove ball bearings, an outer end surface of one deep groove ball bearing abuts against a step portion in the outer sleeve, and an outer end surface of the other deep groove ball bearing abuts against an inner end surface of the cap.
4. The vane diffuser adjustment mechanism of claim 1 wherein the distal end of the vane pivot has external threads and the rotating handle is fixedly disposed on the external threads of the distal end of the vane pivot via internal threads of the rotating handle.
5. The vane diffuser adjustment mechanism of claim 1 wherein the outer end surface of the cap has a dial and the rotating handle has a pointer thereon, the pointer and the dial cooperating to indicate the angle of the setting angle of the vane of the diffuser.
6. The vane diffuser adjustment mechanism of claim 1 wherein the number of set screws between the vane shaft and the cap is at least two to prevent the diffuser vanes from loosening during compressor testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020894422.9U CN212838610U (en) | 2020-05-25 | 2020-05-25 | Blade diffuser adjustment mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020894422.9U CN212838610U (en) | 2020-05-25 | 2020-05-25 | Blade diffuser adjustment mechanism |
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| CN212838610U true CN212838610U (en) | 2021-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664121A (en) * | 2020-05-25 | 2020-09-15 | 中科澳能(北京)节能技术有限公司 | Centrifugal compressor blade diffuser adjusting mechanism and control method thereof |
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2020
- 2020-05-25 CN CN202020894422.9U patent/CN212838610U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664121A (en) * | 2020-05-25 | 2020-09-15 | 中科澳能(北京)节能技术有限公司 | Centrifugal compressor blade diffuser adjusting mechanism and control method thereof |
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Effective date of registration: 20220308 Address after: 903, floor 9, building 3, No. 15, xidawang Road, Chaoyang District, Beijing 100022 Patentee after: Zhongke Jiulang (Beijing) Energy Technology Co.,Ltd. Address before: 100190, No. 11 West Fourth Ring Road, Beijing, Haidian District Patentee before: Institute of Engineering Thermophysics, Chinese Academy of Sciences |