CN114061408B - A clearance control test mechanism for apex clearance test - Google Patents
A clearance control test mechanism for apex clearance test Download PDFInfo
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- CN114061408B CN114061408B CN202111335520.4A CN202111335520A CN114061408B CN 114061408 B CN114061408 B CN 114061408B CN 202111335520 A CN202111335520 A CN 202111335520A CN 114061408 B CN114061408 B CN 114061408B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
Abstract
The invention discloses a clearance control test mechanism for a blade tip clearance test, which comprises an upper end wall platform, a lower end wall platform, a hub end wall, a clearance control plate, a casing end wall, blades, a spacing adjusting nut, a straight arm screw rod and a cross arm screw rod, wherein an end wall fixing sleeve penetrates through the middle of the upper end wall platform, and the other end of the end wall fixing sleeve penetrates through the lower surface of the lower end wall platform.
Description
Technical Field
The invention belongs to the technical field of blade tip clearance control, and particularly relates to a clearance control test mechanism for a blade tip clearance test.
Background
Clearance control devices have been used on high pressure turbines for the earliest days, such as those used in CFM56 engines. With the increasing of the pressure ratio of the compressor, the height of the high-pressure compressor, especially the last stage of blades, is obviously reduced to be only 20-30 mm, and the air leakage of the blade tip clearance becomes a very prominent problem. In order to further improve the performance and efficiency of the engine, the modern advanced engine adopts a blade tip clearance control device besides a necessary sealing device on a high-pressure compressor, the active clearance control method is that a double-layer casing is adopted at the rear section of the high-pressure compressor, an outer-layer casing is used as a bearing piece, an inner-layer casing is the outline of an airflow channel of the compressor, and an annular cavity is formed between the double-layer casings. In different working states of the engine, air with different temperatures and pressures is introduced into the cavity, and air with a certain pressure is also introduced into the inner cavity of the rotor, so that the radial deformation of the casing and the rotor is coordinated under the combined action of gas pressure and thermal deformation, and a small clearance value is always kept in a main working state (such as a cruising state of a civil engine).
In the tip clearance test process, a corresponding clearance control test mechanism needs to be used, and the following problems are provided for the clearance control test mechanism in the prior art:
1. in the process of the tip clearance test, the clearance gauge is required to be used for measuring the size of the tip clearance before the test and after the test is finished so as to ensure the accuracy of the test working condition, however, the clearance in different blades is generally measured manually in the clearance measuring mode in the prior art, and the clearance measuring mode is easy to cause numerical value deviation and influence the subsequent test result;
2. in the process of the tip clearance test, the size of the blade needs to be adjusted, however, in the clearance control test mechanism in the prior art, the blade with the corresponding size is generally replaced, and then the relevant test is performed, but because eight groups of blades are involved in the tip clearance test, time is consumed when the size of the blade is replaced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a clearance control testing mechanism for a blade tip clearance test, so as to solve the problem that the impeller clearance measurement in the prior art proposed in the background art is prone to deviation.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a clearance control test mechanism for apex clearance test, includes upper end wall platform, lower end wall platform, wheel hub end wall, clearance control board, machine casket end wall, blade, interval adjusting nut, straight arm lead screw and xarm lead screw, run through in the middle of the upper end wall platform and be provided with end wall fixed sleeve, the end wall fixed sleeve other end runs through the setting under end wall platform lower surface, be provided with the wheel hub end wall in the middle of the upper end wall platform, be provided with the machine casket end wall in the middle of the lower end wall platform, the equal fixedly connected with perpendicular link of machine casket end wall surface both sides, two perpendicular link equal perpendicular to machine casket end wall side, two perpendicular link last surface sliding connection has horizontal connection, horizontal connection has movable slider on the frame, movable slider upper end fixedly connected with measures the clearance gauge, perpendicular link inside is provided with straight arm lead screw, straight arm lead screw both ends rotate respectively and connect in perpendicular link inside relative both sides, straight arm lead screw one end is connected with servo motor one end, servo motor fixed connection is on perpendicular link inner wall surface, straight arm lead screw surface threaded connection has two perpendicular removal rings, and two perpendicular removal rings are provided with the fixed connection piece through the vertical connection piece and the horizontal connection piece lower surface connection piece.
Preferably, a cross arm screw rod is arranged inside the horizontal connecting frame, two ends of the cross arm screw rod are respectively connected to two sides inside the horizontal connecting frame in a rotating mode, one end of the cross arm screw rod is connected with a servo motor II in a transmission mode, and two ends of the cross arm screw rod are respectively provided with a connecting bearing in a penetrating mode.
Preferably, the surfaces of two adjacent ends of the cross arm screw rod are respectively in threaded connection with horizontal moving rings, and a movable sliding block is arranged between the two horizontal moving rings.
Preferably, the upper end wall platform and the lower end wall platform are both arranged on the side of the fan, and the surface of the inner side of the fan is provided with a heat exchanger.
Preferably, the upper end of the end wall of the hub is provided with a gap control panel, the four corners of the gap control panel are provided with adjusting bolts through connecting holes in a penetrating manner, and the lower ends of the adjusting bolts are arranged on the lower surface of the end wall of the casing in a penetrating manner.
Preferably, the upper and lower junctions of the gap control plate and the adjusting bolt are provided with spacing adjusting nuts, and the spacing adjusting nuts are in threaded connection with the outside of the adjusting bolt.
Preferably, the inside surface of clearance control board is provided with eight adjacent control board blade grooves, the quick-witted casket end arm surface is provided with eight adjacent last blade grooves, clearance control board upper surface is provided with a plurality of clearance fine setting knobs, clearance fine setting knob lower extreme all is connected at the blade upper surface.
Preferably, eight blades penetrate through the middles of the hub end arm and the casing end arm, the sizes of the blades are smaller than those of the control plate blade groove, the upper blade groove and the lower blade groove, and a plurality of blade static pressure holes are formed in the surface of each blade.
Preferably, the surfaces of the hub end wall and the casing end wall are respectively provided with a plurality of upper end wall outlet static pressure holes and lower end wall outlet static pressure holes, one side of each upper end wall outlet static pressure hole is provided with a probe displacement groove, and the other side of each upper end wall outlet static pressure hole is provided with a static pressure measurement matrix.
Preferably, a five-hole static pressure plate is arranged on the surface of one side of the casing end arm, a five-hole probe sweeping groove is formed in the surface of the five-hole static pressure plate, and five lower blade grooves are formed in the outer surface of the casing end arm.
Compared with the prior art, the invention provides a clearance control test mechanism for a tip clearance test, which has the following beneficial effects:
1. according to the invention, through the arrangement of the first servo motor, the straight arm screw rod in the vertical connecting frame can be rotated under the action of the first servo motor, when the straight arm screw rod rotates, the two groups of vertical moving rings can drive the connecting block to move in the direction of the straight arm, and when the connecting block moves, the horizontal connecting frame connected with the connecting block simultaneously moves in the direction of the straight arm, so that the linear distance between the measuring feeler gauge and the blade can be adjusted in such a way, the blade can be conveniently measured by the measuring feeler gauge, and the error value in manual measurement can be effectively reduced;
2. according to the invention, through the servo motor II, when the horizontal position of the measuring feeler gauge is adjusted, the cross arm screw rod in the horizontal connecting frame can be rotated under the action of the servo motor II, two groups of horizontal moving rings can slide on the surface of the cross arm screw rod when the cross arm screw rod rotates, and a movable sliding block in the middle of each horizontal moving ring can correspondingly slide when the horizontal moving rings move, so that the horizontal position of the measuring feeler gauge can be adjusted, and the gaps of blades at different positions can be measured;
3. according to the invention, through the arranged adjusting bolts and the arranged spacing adjusting nuts, when the size of the blade is adjusted, because the four ends of the gap control plate are all arranged in the adjusting bolts in a penetrating manner, and the upper side and the lower side of the gap control plate and the adjusting bolts are both provided with the spacing adjusting nuts, the height position between the gap control plate and the lower end wall platform can be adjusted in such a way by screwing the corresponding spacing adjusting nuts on the upper side and the lower side of the gap control plate respectively, so that the adjustment of the size of the blade gap is realized;
4. according to the invention, through the arranged clearance fine-tuning knob, the fine tuning of the clearance of the single blade can be realized by screwing the corresponding clearance fine-tuning knob at the upper end of the blade, through the arranged heat exchanger, high-temperature incoming flow provided by the fan flows through the rectification section for rectification after heat exchange of the heat exchanger, the grid mesh structure arranged in the rectification section can break up vortex in the air flow and control the turbulence degree in the flow field, and finally enters the cascade flow field after being accelerated by the contraction section, and the corresponding experimental result can be measured subsequently through the probe.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention in any way:
FIG. 1 is a schematic structural diagram of a clearance control testing mechanism for a tip clearance test according to the present invention;
FIG. 2 is a top cross-sectional view of a vertical link and a horizontal link in a clearance control testing mechanism for a tip clearance test according to the present invention;
FIG. 3 is a schematic structural diagram of a blade in a clearance control testing mechanism for a tip clearance test according to the present invention;
FIG. 4 is a schematic structural view of a five-hole static plate in a clearance control testing mechanism for a tip clearance test according to the present invention;
FIG. 5 is an enlarged view of A of FIG. 2 showing a clearance control test mechanism for a tip clearance test according to the present invention;
FIG. 6 is a top view of a hub end wall of a clearance control test mechanism for a tip clearance test in accordance with the present invention;
FIG. 7 is a top view of an end wall of a casing in a clearance control testing mechanism for a tip clearance test in accordance with the present invention;
FIG. 8 is a top view of a clearance control plate in a clearance control testing mechanism for a tip clearance test according to the present invention;
in the figure: 1. an upper endwall platform; 2. a lower end wall platform; 3. a hub end wall; 4. an end wall fixing sleeve; 5. a clearance fine adjustment knob; 6. a gap control plate; 7. a casing end wall; 8. a blade; 9. a fan; 10. a heat exchanger; 11. adjusting the bolt; 12. a spacing adjustment nut; 13. connecting a bearing; 14. a five-hole static pressure plate; 15. an upper end wall outlet static pressure hole; 16. a probe displacement groove; 17. a static pressure measurement matrix; 18. a lower end wall outlet static pressure hole; 19. an upper blade groove; 20. connecting holes; 21. a vane static pressure port; 22. controlling the plate blade slot; 23. a five-hole probe sweeps a slot; 24. a vertical connecting frame; 25. a horizontal connecting frame; 26. a movable slide block; 27. measuring a feeler gauge; 28. a first servo motor; 29. a straight arm screw; 30. a vertical moving ring; 31. connecting blocks; 32. fixing the knob; 33. a servo motor II; 34. a cross arm lead screw; 35. a horizontal shift ring; 36. a lower blade groove.
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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-8, the present invention provides the following technical solutions: a clearance control test mechanism for a blade tip clearance test comprises an upper end wall platform 1, a lower end wall platform 2, a hub end wall 3, a clearance control plate 6, a casing end wall 7, blades 8, a spacing adjusting nut 12, a straight arm screw 29 and a cross arm screw 34, wherein an end wall fixing sleeve 4 is arranged in the middle of the upper end wall platform 1 in a penetrating manner, the other end of the end wall fixing sleeve 4 is arranged on the lower surface of the lower end wall platform 2 in a penetrating manner, the hub end wall 3 is arranged in the middle of the upper end wall platform 1, the casing end wall 7 is arranged in the middle of the lower end wall platform 2, vertical connecting frames 24 are fixedly connected on both sides of the outer surface of the casing end wall 7, two vertical connecting frames 24 are perpendicular to the side edge of the casing end wall 7, a horizontal connecting frame 25 is slidably connected on the upper surfaces of the two vertical connecting frames 24, a movable sliding block 26 is fixedly connected on the upper end of the movable sliding block 26, a straight arm screw 29 is arranged in the vertical connecting frame 24, two ends of the straight arm screw 29 are respectively and rotatably connected on the two opposite sides in the vertical connecting frames 24, one end of the straight arm screw 29 is connected with a servo motor 28, a rotary block 31 which is connected with a rotary knob which can move vertically, the straight arm 30, the straight arm rotary block 30, the rotary block is connected with the straight arm rotary block 31 which can move in the vertical arm rotary block 31 in the vertical connecting frame 30, and the vertical arm rotary block 31, can adjust the straight-line distance between measurement clearance gauge 27 and the blade 8 with this mode to be convenient for measure clearance gauge 27 and measure blade 8, error numerical value when can effectively reducing artifical the measurement.
In the present invention, it is preferable that a horizontal arm screw 34 is provided inside the horizontal connecting frame 25, both ends of the horizontal arm screw 34 are rotatably connected to both sides inside the horizontal connecting frame 25, one end of the horizontal arm screw 34 is connected to a servo motor 33 in a transmission manner, both ends of the horizontal arm screw 34 are provided with connecting bearings 13 in a penetrating manner, when the horizontal position of the measuring feeler 27 is adjusted, the horizontal arm screw 34 inside the horizontal connecting frame 25 can be rotated by the action of the servo motor 33, when the horizontal arm screw 34 is rotated, two sets of horizontal moving rings 35 can be slid on the surface of the horizontal arm screw 34, when the horizontal moving rings 35 are moved, the movable slider 26 in the middle of the horizontal moving rings 35 can be slid accordingly, so that the horizontal position of the measuring feeler 27 can be adjusted, and the gap between the blades 8 at different positions can be measured.
In the present invention, preferably, the horizontal moving rings 35 are screwed on the adjacent two end surfaces of the crossbar screw 34, and the movable slider 26 is disposed between the two horizontal moving rings 35.
In the invention, preferably, the upper end wall platform 1 and the lower end wall platform 2 are both arranged on the side of the fan 9, the heat exchanger 10 is arranged on the inner side surface of the fan 9, after the position adjustment of the blades 8 is finished, high-temperature incoming flow provided by the fan 9 is subjected to heat exchange through the heat exchanger 10 and then flows through the rectification section for rectification, the grid mesh structure arranged in the rectification section can break up vortex in air flow and control the turbulence degree in the flow field, finally the high-temperature incoming flow enters the cascade flow field after being accelerated by the contraction section, corresponding experimental results can be measured subsequently through the probe, and after the probe measurement is finished, the gap between different blades 8 can be measured by using the measuring feeler gauge again in the same way.
In the present invention, preferably, the upper end of the hub end wall 3 is provided with a gap control plate 6, four corners of the gap control plate 6 are all provided with adjusting bolts 11 through connecting holes 20, and the lower ends of the adjusting bolts 11 are arranged on the lower surface of the casing end wall 7 in a penetrating manner.
In the invention, preferably, the upper and lower joints of the gap control plate 6 and the adjusting bolt 11 are respectively provided with an interval adjusting nut 12, the interval adjusting nuts 12 are in threaded connection with the outside of the adjusting bolt 11, when the size of the blade 8 is adjusted, four ends of the gap control plate 6 are all arranged in the adjusting bolt 11 in a penetrating manner, the upper and lower sides of the gap control plate 6 and the adjusting bolt 11 are respectively provided with the interval adjusting nuts 12, and the height position between the gap control plate 6 and the lower end wall platform 2 can be adjusted in such a way by screwing the corresponding interval adjusting nuts 12 on the upper and lower sides of the gap control plate 6 respectively, thereby adjusting the gap size of the blade 8.
In the invention, preferably, the inner surface of the clearance control plate 6 is provided with eight adjacent control plate blade grooves 22, the outer surface of the casing end arm 7 is provided with eight adjacent upper blade grooves 19, the upper surface of the clearance control plate 6 is provided with a plurality of clearance fine adjustment knobs 5, the lower ends of the clearance fine adjustment knobs 5 are connected to the upper surfaces of the blades 8, and the fine adjustment of the clearance of the single blade 8 can be realized by screwing the corresponding clearance fine adjustment knobs 5 at the upper ends of the blades 8.
In the present invention, preferably, eight blades 8 are provided between the hub end arm 3 and the casing end arm 7, and the size of each blade 8 is smaller than that of each of the control plate blade groove 22, the upper blade groove 19 and the lower blade groove 36, and a plurality of blade static pressure holes 21 are provided on the surface of each blade 8.
In the invention, preferably, a plurality of upper end wall outlet static pressure holes 15 and a plurality of lower end wall outlet static pressure holes 18 are respectively arranged on the surfaces of the hub end wall 3 and the casing end wall 7, a probe displacement groove 16 is arranged on one side of the upper end wall outlet static pressure hole 15, and a static pressure measurement matrix 17 is arranged on the other side of the upper end wall outlet static pressure hole 15.
In the invention, preferably, a five-hole static pressure plate 14 is arranged on one side surface of the casing end arm 7, a five-hole probe sweeping groove 23 is arranged on the surface of the five-hole static pressure plate 14, and five lower blade grooves 36 are arranged on the outer surface of the casing end arm 7.
The working principle and the using process of the invention are as follows: when the measuring plug ruler is used, the straight arm lead screw 29 in the vertical connecting frame 24 can be rotated under the action of the first servo motor 28, when the straight arm lead screw 29 rotates, the two groups of vertical moving rings 30 can drive the connecting block 31 to move in the straight arm direction, when the connecting block 31 moves, the horizontal connecting frame 25 connected with the connecting block can simultaneously move in the straight arm direction, the linear distance between the measuring plug ruler 27 and the blade 8 can be adjusted in the mode, so that the measuring plug ruler 27 can conveniently measure the blade 8, the error value during manual measurement can be effectively reduced, when the horizontal position of the measuring plug ruler 27 is adjusted, the cross arm lead screw 34 in the horizontal connecting frame 25 can be rotated under the action of the second servo motor 33, when the cross arm lead screw 34 rotates, the two groups of horizontal moving rings 35 can slide on the surface of the cross arm lead screw 34, when the horizontal moving rings 35 move, the movable sliding block 26 in the middle of the horizontal moving ring 35 can correspondingly slide, so that the horizontal position of the measuring feeler 27 can be adjusted, the gaps of the blades 8 at different positions can be measured, when the size of the blade 8 is adjusted, because four ends of the gap control plate 6 are all arranged in the adjusting bolt 11 in a penetrating way, and the upper side and the lower side of the gap control plate 6 and the adjusting bolt 11 are both provided with the interval adjusting nuts 12, the corresponding interval adjusting nuts 12 are screwed on the upper side and the lower side of the gap control plate 6 respectively, so that the height position between the gap control plate 6 and the lower end wall platform 2 can be adjusted, so that the size of the gap of the blade 8 can be adjusted, the corresponding gap fine adjustment knob 5 is screwed on the upper end of the blade 8, the fine adjustment of the gap of the single blade 8 can be realized, after the position adjustment of the blade 8 is finished, the high-temperature incoming flow provided by the fan 9 flows through the rectifying section after the heat exchange of the heat exchanger 10 for rectification, the grid mesh structure arranged in the rectifying section can break up vortexes in airflow and control turbulence degree in a flow field, finally enters the blade grid flow field after being accelerated by the contraction section, corresponding experimental results can be measured subsequently through the probe, and after the probe measurement is finished, the measuring feeler gauge is used again to measure gaps of different blades 8 in the same mode.
The first embodiment is as follows:
a clearance control test mechanism for a blade tip clearance test comprises an upper end wall platform 1, a lower end wall platform 2, a hub end wall 3, a clearance control plate 6, a casing end wall 7, blades 8, a spacing adjusting nut 12, a straight arm screw 29 and a cross arm screw 34, wherein an end wall fixing sleeve 4 is arranged in the middle of the upper end wall platform 1 in a penetrating manner, the other end of the end wall fixing sleeve 4 is arranged on the lower surface of the lower end wall platform 2 in a penetrating manner, the hub end wall 3 is arranged in the middle of the upper end wall platform 1, the casing end wall 7 is arranged in the middle of the lower end wall platform 2, vertical connecting frames 24 are fixedly connected on both sides of the outer surface of the casing end wall 7, two vertical connecting frames 24 are perpendicular to the side edge of the casing end wall 7, a horizontal connecting frame 25 is slidably connected on the upper surfaces of the two vertical connecting frames 24, a movable sliding block 26 is fixedly connected on the upper end of the movable sliding block 26, a straight arm screw 29 is arranged in the vertical connecting frame 24, two ends of the straight arm screw 29 are respectively and rotatably connected on the two opposite sides in the vertical connecting frames 24, one end of the straight arm screw 29 is connected with a servo motor 28, a rotary block 31 which is connected with a rotary knob which can move vertically, the straight arm 30, the straight arm rotary block 30, the rotary block is connected with the straight arm rotary block 31 which can move in the vertical arm rotary block 31 in the vertical connecting frame 30, and the vertical arm rotary block 31, can adjust the straight-line distance between measurement clearance gauge 27 and the blade 8 with this mode to be convenient for measure clearance gauge 27 and measure blade 8, error numerical value when can effectively reducing artifical the measurement.
The second embodiment:
in the invention, preferably, the upper end wall platform 1 and the lower end wall platform 2 are both arranged at the side of the fan 9, the heat exchanger 10 is arranged on the inner side surface of the fan 9, after the position adjustment of the blades 8 is finished, high-temperature incoming flow provided by the fan 9 flows through the rectification section for rectification after being subjected to heat exchange by the heat exchanger 10, the grid mesh structure arranged in the rectification section can break up vortex in airflow and control turbulence degree in the flow field, and finally enters the cascade flow field after being accelerated by the contraction section, corresponding experimental results can be measured subsequently by the probe, and after the probe measurement is finished, the gap between different blades 8 can be measured by using the measuring feeler gauge again in the same manner.
In the invention, preferably, the upper and lower joints of the gap control plate 6 and the adjusting bolt 11 are respectively provided with a spacing adjusting nut 12, the spacing adjusting nuts 12 are in threaded connection with the outside of the adjusting bolt 11, when the size of the blade 8 is adjusted, the four ends of the gap control plate 6 are all arranged inside the adjusting bolt 11 in a penetrating manner, the upper and lower sides of the gap control plate 6 and the adjusting bolt 11 are respectively provided with the spacing adjusting nuts 12, and the height position between the gap control plate 6 and the lower end wall platform 2 can be adjusted in such a way by screwing the corresponding spacing adjusting nuts 12 on the upper and lower sides of the gap control plate 6, so that the adjustment of the gap size of the blade 8 is realized.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a clearance control test mechanism for apex clearance test, includes upper end wall platform (1), lower end wall platform (2), wheel hub end wall (3), clearance control panel (6), quick-witted casket end wall (7), blade (8), interval adjusting nut (12), straight arm lead screw (29) and xarm lead screw (34), its characterized in that: an end wall fixing sleeve (4) penetrates through the middle of the upper end wall platform (1), the other end of the end wall fixing sleeve (4) penetrates through the lower surface of the lower end wall platform (2), a hub end wall (3) is arranged in the middle of the upper end wall platform (1), a casing end wall (7) is arranged in the middle of the lower end wall platform (2), vertical connecting frames (24) are fixedly connected to two sides of the outer surface of the casing end wall (7), the vertical connecting frames (24) are perpendicular to the side edge of the casing end wall (7), a horizontal connecting frame (25) is connected to the upper surface of the vertical connecting frame (24) in a sliding mode, a movable sliding block (26) is connected to the upper surface of the horizontal connecting frame (25) in a sliding mode, a measuring plug gauge (27) is fixedly connected to the upper end of the movable sliding block (26), a straight arm lead screw (29) is arranged inside the vertical connecting frame (24), two ends of the straight arm lead screw (29) are respectively and rotatably connected to two opposite sides inside the vertical connecting frame (24), one end of the straight arm lead screw (29) is connected with a first servo motor (28), a first servo motor (28) is fixedly connected to the inner wall surface of the vertical connecting frame (24), and two moving rings (30) are connected with two vertical connecting blocks (31), the connecting block (31) is connected with the vertical moving ring (30) through a fixing knob (32), and the upper end of the connecting block (31) is fixedly connected to the lower surface of the horizontal connecting frame (25).
2. A clearance control testing mechanism for a tip clearance test as defined in claim 1, wherein: the horizontal connecting frame (25) is internally provided with a cross arm lead screw (34), two ends of the cross arm lead screw (34) are respectively connected to two sides in the horizontal connecting frame (25) in a rotating mode, one end of the cross arm lead screw (34) is connected with a servo motor II (33) in a transmission mode, and two ends of the cross arm lead screw (34) are respectively provided with a connecting bearing (13) in a penetrating mode.
3. A clearance control testing mechanism for a tip clearance test as defined in claim 1, wherein: the surfaces of two adjacent ends of the cross arm screw rod (34) are in threaded connection with horizontal moving rings (35), and a movable sliding block (26) is arranged between the two horizontal moving rings (35).
4. A clearance control testing mechanism for a tip clearance test as defined in claim 1, wherein: the upper end wall platform (1) and the lower end wall platform (2) are arranged on the side of the fan (9), and a heat exchanger (10) is arranged on the inner side surface of the fan (9).
5. A clearance control testing mechanism for a tip clearance test as defined in claim 1, wherein: the wheel hub end wall (3) upper end is provided with clearance control panel (6), clearance control panel (6) four corners all runs through connecting hole (20) and is provided with adjusting bolt (11), adjusting bolt (11) lower extreme runs through and sets up at quick-witted casket end wall (7) lower surface.
6. The clearance control testing mechanism for the tip clearance test as set forth in claim 1, wherein: gap control board (6) and adjusting bolt (11) junction from top to bottom all are provided with interval adjusting nut (12), interval adjusting nut (12) threaded connection is outside adjusting bolt (11).
7. The clearance control testing mechanism for the tip clearance test as set forth in claim 1, wherein: the clearance control panel (6) inside surface is provided with eight adjacent control panel blade grooves (22), cartridge receiver end wall (7) surface is provided with eight adjacent last blade grooves (19), clearance control panel (6) upper surface is provided with a plurality of clearance fine setting knobs (5), clearance fine setting knob (5) lower extreme is all connected at blade (8) upper surface.
8. A clearance control testing mechanism for a tip clearance test as defined in claim 1, wherein: eight blades (8) penetrate through the middles of the hub end wall (3) and the casing end wall (7), the sizes of the blades (8) are smaller than those of the control plate blade grooves (22), the upper blade grooves (19) and the lower blade grooves (36), and a plurality of blade static pressure holes (21) are formed in the surfaces of the blades (8).
9. A clearance control testing mechanism for a tip clearance test as defined in claim 1, wherein: the surface of the hub end wall (3) and the surface of the casing end wall (7) are respectively provided with a plurality of upper end wall outlet static pressure holes (15) and lower end wall outlet static pressure holes (18), one side of each upper end wall outlet static pressure hole (15) is provided with a probe displacement groove (16), and the other side of each upper end wall outlet static pressure hole (15) is provided with a static pressure measurement matrix (17).
10. A clearance control testing mechanism for a tip clearance test as defined in claim 1, wherein: the five-hole probe sweeping groove is characterized in that a five-hole static pressure plate (14) is arranged on the surface of one side of the casing end wall (7), a five-hole probe sweeping groove (23) is formed in the surface of the five-hole static pressure plate (14), and five lower blade grooves (36) are formed in the outer surface of the casing end wall (7).
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| CN108956068A (en) * | 2018-05-25 | 2018-12-07 | 东北大学 | A kind of rubbing test device turning stator |
| WO2020151368A1 (en) * | 2019-01-23 | 2020-07-30 | 安图实验仪器(郑州)有限公司 | Fully automatic microorganism identification and drug sensitivity analysis system |
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