CN217276876U - Gas compressor test piece rack - Google Patents
Gas compressor test piece rack Download PDFInfo
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- CN217276876U CN217276876U CN202220379747.2U CN202220379747U CN217276876U CN 217276876 U CN217276876 U CN 217276876U CN 202220379747 U CN202220379747 U CN 202220379747U CN 217276876 U CN217276876 U CN 217276876U
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- 238000012360 testing method Methods 0.000 title claims abstract description 106
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
Providing a compressor test piece rack for supporting a compressor test piece, wherein the compressor test piece rack comprises a base, at least one pair of supporting frames, a pin shaft and a universal bearing, and the base comprises a first rail and a second rail which are orthogonally arranged; at least one pair of support frames is arranged on the base and can respectively move along the first track and the second track, and each support frame comprises a fastening table arranged at the top; the pin shaft extends along the axial direction of the compressor test piece; the universal bearing is sleeved on the periphery of the pin shaft; wherein, the one end of round pin axle is fixed by the fastening platform, and the other end is used for connecting the compressor testpieces, and universal bearing is injectd between fastening platform and compressor testpieces. The gas compressor test piece rack can absorb axial deformation of a gas compressor test piece in an experiment and provide support with enough strength.
Description
Technical Field
The utility model relates to an aeroengine test field, concretely relates to compressor testpieces support piece field.
Background
The air compressor is one of three major components of an aeroengine, the working performance and safety margin of the air compressor directly influence the working capacity of the engine, and in order to verify the design index of the air compressor, the performance, the margin, the influence of a guide vane angle, the influence of air entrainment and the like of the air compressor are acquired through a bench test. Whether the compressor test can be smoothly carried out or not. Besides the requirement that the compressor test piece has good mechanical working characteristics, the technical state of the installation of the compressor test piece on the test equipment rack also has important influence on the compressor test.
The mounting precision of the gas compressor test piece rack is an important condition for ensuring the safe development of the test, and the state quality of the gas compressor test piece rack is directly related to the rotor dynamics problem. At present, most domestic gas compressor test pieces are installed on a rack in a suspension mode, namely, an exhaust casing of the test piece is in rigid connection with an exhaust gas collection chamber of the rack, and an air inlet casing and an air inlet pressure stabilizing box of the rack are in flexible connection similar to a rubber plate, so that the rigidity of an inlet of the test piece is insufficient; in addition, the test piece has micro-deformation due to aerodynamic force and high temperature in the test process, and if the deformation cannot be effectively absorbed, the vibration problem of a casing or a bearing is easy to occur, so that the test safety of the gas compressor is seriously influenced.
Based on this, it is necessary to provide a test piece rack for a compressor to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compressor testpieces rack can the effective absorption axial deformation to can provide the support intensity of preferred.
The gas compressor test piece rack for achieving the purpose is used for supporting a gas compressor test piece. The rack comprises a base, at least one pair of supporting frames, a pin shaft and a universal bearing. The base comprises a first rail and a second rail which are arranged orthogonally to each other; at least one pair of support frames is arranged on the base and can move along the first rail and the second rail respectively, and each support frame comprises a fastening table arranged at the top; the pin shaft extends along the axial direction of the compressor test piece; the universal bearing is sleeved on the periphery of the pin shaft; one end of the pin shaft is fixed by the fastening table, the other end of the pin shaft is used for being connected with the compressor test piece, and the universal bearing is limited between the fastening table and the compressor test piece.
In one or more embodiments, the stand further comprises a spacer assembly disposed between the fastening table and the top of the support stand for adjusting the height of the pin.
In one or more embodiments, the shim assembly includes a plurality of shims of different heights.
In one or more embodiments, the stand further comprises a third fastening bolt for pressing the fastening table and/or the shim pack against the top end face of the support frame.
In one or more embodiments, the pins can be replaced with pins of different diameters.
In one or more embodiments, the second track is disposed above the first track, a bottom of the second track includes a first slider, and the second track slides on the first track via the first slider; the bottom of the support frame comprises a second sliding block, and the support frame slides on the second track through the second sliding block.
In one or more embodiments, the bottom of the second rail further comprises a first fastening bolt for pressing the first slider on the first rail; the bottom of the support frame further comprises a second fastening bolt for pressing the second sliding block on the second track.
In one or more embodiments, the first slider and/or the second slider are in a T-shaped structure, and the sliding groove of the first track is configured to match with the T-shaped structure.
In one or more embodiments, the support frame is a hollow structure.
In one or more embodiments, the support frame includes a lower support portion and an upper support portion, and an inner side surface of the lower support portion facing the other support frame is an inclined surface, so that a sectional area of the lower support portion is increased from top to bottom, and a section of a gap defined by the pair of lower support portions is trapezoidal.
In one or more embodiments, a gap defined by a pair of the upper support portions has a rectangular cross section.
In one or more embodiments, the height of the pin shaft is consistent with the height of the axis of the compressor test piece.
The gas compressor test piece rack is connected with the universal bearing together through the pin shaft, so that the motion flexibility between the pin shaft and the auxiliary gas compressor test piece is increased, the multidirectional transmission of load is realized, partial deformation is effectively absorbed, and sufficient support strength can be provided for the test piece; in addition, through setting up the gasket subassembly and being the first track and the second track of quadrature setting, can change the height of round pin axle, change the interval of support frame for compressor testpieces rack has the matching size regulatory ability.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and examples, in which:
FIG. 1 is a schematic structural view of one embodiment of a compressor test piece stand.
Fig. 2 is a schematic cross-sectional view of a slider and a guide rail.
Fig. 3 shows a cross-sectional view in the direction B-B in fig. 1.
Description of the reference numerals
1 base
2 support frame
3 first track
4 second track
6 pin shaft
5 first slide block
7 fastening table
8 first fastening bolt
9 inner side surface
11 gasket assembly
12 second slide block
13 second fastening bolt
14 universal bearing
18 third fastening bolt
21 upper support part
22 lower support part
61 first part
62 second part
71 first fastening part
72 second fastening part
101 shim
Detailed Description
The present invention will be further described with reference to the following embodiments and drawings, and more details will be set forth in the following description in order to provide a thorough understanding of the present invention, but it is obvious that the present invention can be implemented in various other ways different from those described herein, and those skilled in the art can make similar generalizations and deductions according to the actual application without departing from the spirit of the present invention, and therefore, the scope of the present invention should not be limited by the contents of the embodiments.
It should be noted that these and other subsequent figures are provided by way of example only and are not drawn to scale, and should not be construed as limiting the scope of the invention as it is actually claimed.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not otherwise stated, the terms do not have special meanings and do not represent a primary or secondary purpose, and therefore, the scope of protection of the present application is not to be construed as being limited.
Referring to fig. 1, a compressor test piece stand for supporting a compressor test piece (not shown).
The bench comprises a base 1, at least one pair of support frames 2, a pin shaft 6 and a universal bearing 14, wherein the pair of support frames 2 are symmetrically arranged and are used as bearing parts for supporting a compressor test piece. The base 1 includes a first rail 3 and a second rail 4 orthogonally disposed to each other, and the support frame 2 is disposed on the base 1 to be movable along the first rail 3 and the second rail 4, respectively. The support frame 2 comprises a fastening table 7 arranged on top of the support frame 2.
It will be appreciated that for a compressor test piece of greater weight, two or more pairs of support brackets 2 may be provided to provide sufficient support strength.
In the embodiment shown in fig. 1, the axial direction of the compressor test piece coincides with the extending direction of the first rail 3 to adjust the axial distance of the support frame, and the second rail 4 is arranged orthogonally to the first rail 3. It will be appreciated that it is also possible to arrange the second track 4 in line with the axial direction of the compressor test piece, and to arrange the first track 3 in line with the radial direction of the compressor test piece.
The pin shaft 6 is cylindrical and extends along the axial direction of the compressor test piece, the surface of the pin shaft is a high-precision finish machining surface, and the universal bearing 14 is sleeved on the periphery of the pin shaft 6.
One end of the pin shaft 6 is fixed by the fastening table 7, the other end of the pin shaft is used for being connected with a gas compressor test piece, and the universal bearing 14 is limited between the fastening table 7 and the gas compressor test piece so as to meet the requirement of axial expansion of a test piece casing under the high-temperature condition.
Specifically, as shown in connection with fig. 3, the pin 6 includes a first portion 61 and a second portion 62, as in one embodiment. The fastening table 7 is used to fix the first part 61, as in the embodiment shown in fig. 3, the fastening table 7 comprises a first fastening part 71 and a second fastening part 72, which can be opened and closed to clamp the pin shaft 6 and facilitate the replacement of the pin shaft 6. The first fastening portion 71 and the second fastening portion 72 are clamped by either the pressing force of fastening bolts or other clamps to fix the first portion 61 by clamping. Preferably, the fastening station 7 comprises a recess for receiving the first portion 61 to avoid damage to the surface of the pin 6 during clamping.
The second part 62 is arranged outside the fastening station 7 for cooperation with the universal bearing 14. The second portion 62 is connected to the compressor test piece so as to axially confine the universal bearing 14 between the fastening station 7 and the compressor test piece. Preferably, the second portion 62 of the pin 6 extends by not less than 20mm to meet the requirement of the test piece for expansion deformation.
For example, the front end air inlet position of the compressor test piece provides a mounting hole matched with the second part 62 to realize the fixation of the pin shaft 6 and the compressor test piece. At this time, the universal bearing 14 is defined between the fastening table 7 and the compressor test piece.
The pin shaft 6 can replace a traditional rubber plate flexible connection mode, and provides enough supporting strength for a compressor test piece. By arranging the universal bearing 14, the axial deformation of the gas compressor test piece in the test process can be buffered by means of the motion flexibility of the universal bearing, and the axial deformation of the gas compressor test piece is effectively absorbed, so that the problem that a casing or a bearing vibrates is avoided, and the safety of a gas compressor test is improved.
In one embodiment, the pins 6 can be replaced with pins of different diameters. The diameter of the pin 6 is determined by the weight of the compressor test piece. It will be appreciated that a pin 6 with a larger diameter can provide greater load bearing strength to accommodate a higher mass compressor test piece.
In order to further improve the adaptability of the stand, the stand further comprises a gasket assembly 11, and the gasket assembly 11 is arranged between the fastening table 7 and the top of the support frame 2 and used for changing the height of the pin shaft 6. Further, the gasket assembly 11 comprises a plurality of gaskets 101 with different heights, and the height of the pin shaft 6 is changed by replacing the gaskets 101 with different heights so as to adapt to compressor test pieces with different sizes and specifications.
In one embodiment, the height of the pin shaft 6 is consistent with the height of the axis of the compressor test piece, so that the height of the supporting force bearing point is the same as the height of the central point of the compressor test piece, and the exhaust supporting center of the compressor and the two supporting force bearing points form an isosceles triangle, thereby improving the installation stability of the test piece.
In one embodiment, the stand includes a third fastening bolt 18 for pressing the fastening block 7 and/or the shim pack 11 against the top end face of the support frame 2.
For example, the fastening table 7 and/or the spacer assembly 11 and/or the top end of the support bracket 2 are provided with threaded holes, and the third fastening bolt 18 simultaneously penetrates through the fastening table 7 and/or the spacer assembly 11 and/or the top end of the support bracket 2 to press the fastening table 7 and/or the spacer assembly 11 against the end face of the support bracket 2. By pressing down the third fastening bolt 18 in the vertical direction, the first portion 61 is pressed into the recess in the fastening table 7, thereby fixing the pin 6 to the support frame 2.
In one embodiment, the supporting frame 2 is hollow, so as to reduce the weight of the device as a whole, and at the same time, reduce the friction force and make the position adjustment on the first rail 3 and the second rail 4 easier.
In order to increase the supporting strength, in one embodiment, the supporting frames 2 include a lower supporting portion 22 and an upper supporting portion 21, an inner side surface 9 of the lower supporting portion 22 facing the other supporting frame 2 is an inclined surface, so that the sectional area of the lower supporting portion 22 increases from top to bottom, and the gap section a defined by the lower supporting portions 22 of the pair of supporting frames 2 is trapezoidal, and the gap section defined by the upper supporting portion 21 is rectangular.
With this arrangement, the lower support portion 22 defines the stability of the trapezoidal structure.
Fig. 1 also shows that the gap defined by the pair of upper support portions 21 is rectangular in cross section. Through setting up support portion 21 into the cuboid type, can provide sufficient support intensity for compressor test piece strong point, with the mode of rectangle and trapezoidal combination, can guarantee the intensity of supporting, can improve the stability of supporting again.
The track structure of the compressor test piece rack is fully described with reference to fig. 1 and 2. The first rail 3 is directly arranged on the upper surface of the base 1 and preferably extends along the axial direction of the compressor test piece; the second track 4 is arranged above the first track 3, the bottom of the second track 4 comprises a first slide block 5, and the second track 4 slides on the first track 3 through the first slide block 5; the bottom of the support frame 2 comprises a second slide block 12, and the support frame 2 slides on the second track 4 through the second slide block 12.
The position of the support frame 2 on the first rail 3 is adjusted, so that the support frame 2 can move along the axial direction of the compressor test piece; by adjusting the relative position of the support frame 2 on the second rail 4, the support frame 2 can be moved along the radial direction of the compressor test piece. In consideration of the installation requirements of the air compressors with different lengths and diameters, the sliding rail type adjusting device is designed, so that the position can be quickly adjusted, the installation efficiency is improved, and the test labor and cost are saved.
Preferably, the first rail 3 and the second rail 4 are provided in pairs to enhance load bearing capacity and rigidity.
On the basis of the above embodiment, the bottom of the second rail 4 further comprises a first fastening bolt 8 for pressing the first slider 5 against the first rail 3; the bottom of the support frame 2 further comprises a second fastening bolt 13 for pressing the second slider 12 against the second rail 4.
When moving according to test piece length size needs, along the radial and axial position of first track 3 and the adjustment support frame 2 of second track 4, guarantee simultaneously that it has about 3mm clearance to leave between universal bearing terminal surface and the support frame 2 for the test piece needs of adjusting.
Then the first fastening bolt 8 and the second fastening bolt 13 are loosened to adjust the position of the left and right support frames 2. After the support frame 2 is moved to the fixing positions of the first rail 3 and the second rail 4, the support frame 2 is fixed through the first fastening bolt 8 and the second fastening bolt 13, the support frame 2 is prevented from moving in the process of installing a compressor test piece or testing the compressor test piece, and the safety of the test is improved.
In order to further improve the support strength of the slide rail, in one embodiment, as shown in fig. 2, the first slider 5 and/or the second slider 12 are in a T-shaped structure, and the sliding groove of the first rail 3 is configured to match the T-shaped structure. The first sliding block 5 and/or the second sliding block 12 which are in the T-shaped structure can ensure that the supporting frame 2 is fixed in the horizontal and axial directions when moving, does not deviate, and can press the supporting device.
The operation of the gantry will now be described.
According to the size of the compressor test piece, a pair of support frames 2 are positioned at proper positions of a first rail 3 and a second rail 4, a gasket 101 with proper height is selected, and the installation height of a pin shaft 6 is determined.
And (5) opening the fastening table 7, and selecting the pin shaft 6 with the proper diameter according to the quality of the test piece. After the pin 6 is fitted into the grooves in the first fastening portion 71 and the second fastening portion 72, the third fastening bolt 18 is fixed and the first portion 61 of the pin 6 is pressed into the fastening table 7.
The pin shaft 6 is sleeved with a universal bearing 14.
And finally, preliminarily connecting the pin shaft 6 with the compressor test piece, and limiting the universal bearing 14 between the compressor test piece and the fastening table 7.
And (3) checking the centering condition of the rotor of the test piece, if the rotor of the test piece is not proper, adjusting the positions of the support frame 2 on the first track 3 and the second track 4 or the height of the pin shaft 6 as required, and ensuring that the installation of the test piece meets the requirement. Compressor related tests were then performed.
The gas compressor test piece rack improves the cantilever installation mode of the current gas compressor test piece on the rack, provides a connection point through the pin shaft and the support frame, improves the support rigidity of the test piece, prevents the inlet of the test piece from sagging caused by the self weight, is particularly suitable for the gas compressor test piece with large size and heavy weight, and reduces the possibility of bending and misalignment of a rotor; the high-precision pin shaft is matched with a universal bearing form, so that the requirement of axial deformation and expansion of the casing of the gas compressor test piece under the high-temperature condition can be met, and the risk of vibration of the casing or the bearing of the test piece is effectively reduced; in addition, the requirements of compressor test pieces of different specifications and models are considered, and the rack has the matching size adjusting capacity through the arrangement of the gasket assembly, the crossed sliding rails and other assemblies, so that the overall adaptability of the device is improved.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present application.
This application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, certain features, structures, or characteristics may be combined as suitable in one or more embodiments of the application.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention, all without departing from the content of the technical solution of the present invention, fall within the scope of protection defined by the claims of the present invention.
Claims (12)
1. Compressor testpieces rack for support compressor testpieces, its characterized in that includes:
a base (1) comprising a first rail (3) and a second rail (4) arranged orthogonally to each other;
at least one pair of supporting frames (2) arranged on the base (1) and capable of moving along the first rail (3) and the second rail (4) respectively, wherein each supporting frame (2) comprises a fastening table (7) arranged at the top;
the pin shaft (6) extends along the axial direction of the compressor test piece;
the universal bearing (14) is sleeved on the periphery of the pin shaft (6);
one end of the pin shaft (6) is fixed by the fastening table (7), the other end of the pin shaft is used for being connected with the compressor test piece, and the universal bearing (14) is limited between the fastening table (7) and the compressor test piece.
2. The compressor test rig stand according to claim 1, characterized in that it further comprises a spacer assembly (11), said spacer assembly (11) being arranged between the fastening station (7) and the top of the support frame (2) for adjusting the height of the pin (6).
3. A compressor test rig as claimed in claim 2, characterised in that the shim pack (11) comprises a plurality of shims (101) of different heights.
4. A compressor test rig stand according to claim 2, characterized in that the stand further comprises a third fastening bolt (18) for pressing the fastening table (7) and/or the shim pack (11) against the top end face of the support frame (2).
5. A compressor test rig as claimed in claim 1, characterized in that the pin (6) can be replaced by a pin of a different diameter.
6. The compressor test rig according to claim 1, characterized in that the second rail (4) is arranged above the first rail (3), the bottom of the second rail (4) comprising a first slide (5), the second rail (4) sliding on the first rail (3) by means of the first slide (5);
the bottom of the support frame (2) comprises a second sliding block (12), and the support frame (2) slides on the second track (4) through the second sliding block (12).
7. The compressor test rig stand according to claim 6, characterized in that the bottom of the second rail (4) further comprises a first fastening bolt (8) for pressing the first slider (5) against the first rail (3);
the bottom of the support frame (2) further comprises a second fastening bolt (13) for pressing the second sliding block (12) on the second track (4).
8. The compressor test rig according to claim 6, characterized in that the first slide (5) and/or the second slide (12) is/are of a T-shaped configuration, the slide groove of the first rail (3) being arranged to match the T-shaped configuration.
9. A compressor test rig stand according to claim 1, characterised in that the support frame (2) is of hollow construction.
10. The compressor test rig stand according to claim 1, wherein the support frame (2) comprises a lower support (22) and an upper support (21),
the lower supporting part (22) faces the other inner side face (9) of the supporting frame (2) and is an inclined face, so that the sectional area of the lower supporting part (22) is increased from top to bottom, and the section of a gap defined by the lower supporting part (22) is trapezoidal.
11. A compressor test rig as claimed in claim 10, characterised in that the gap defined by a pair of said upper supports (21) is rectangular in cross-section.
12. The compressor test piece rack as claimed in claim 1, characterized in that the pin (6) is at a height that coincides with the height of the axis of the compressor test piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220379747.2U CN217276876U (en) | 2022-02-24 | 2022-02-24 | Gas compressor test piece rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220379747.2U CN217276876U (en) | 2022-02-24 | 2022-02-24 | Gas compressor test piece rack |
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| Publication Number | Publication Date |
|---|---|
| CN217276876U true CN217276876U (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220379747.2U Active CN217276876U (en) | 2022-02-24 | 2022-02-24 | Gas compressor test piece rack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120083605A (en) * | 2025-04-29 | 2025-06-03 | 中国航发沈阳发动机研究所 | A biaxial compression system support structure suitable for large-mass long axis systems |
-
2022
- 2022-02-24 CN CN202220379747.2U patent/CN217276876U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120083605A (en) * | 2025-04-29 | 2025-06-03 | 中国航发沈阳发动机研究所 | A biaxial compression system support structure suitable for large-mass long axis systems |
| CN120083605B (en) * | 2025-04-29 | 2025-07-29 | 中国航发沈阳发动机研究所 | A biaxial compression system support structure suitable for large-mass long axis systems |
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