CN114942117B - Wind tunnel displacement compensation device - Google Patents
Wind tunnel displacement compensation device Download PDFInfo
- Publication number
- CN114942117B CN114942117B CN202210874123.2A CN202210874123A CN114942117B CN 114942117 B CN114942117 B CN 114942117B CN 202210874123 A CN202210874123 A CN 202210874123A CN 114942117 B CN114942117 B CN 114942117B
- Authority
- CN
- China
- Prior art keywords
- compressor
- hole
- wind tunnel
- pull rod
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 55
- 238000007789 sealing Methods 0.000 claims description 71
- 210000004907 gland Anatomy 0.000 claims description 27
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 125000003003 spiro group Chemical group 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the field of wind tunnel testing, and discloses a wind tunnel displacement compensation device, wherein a wind tunnel is applied to a wind tunnel system, the wind tunnel system comprises a compressor outlet section, a compressor inlet section and a compressor through-flow section, the first end of the compressor through-flow section is movably connected with the second end of the compressor inlet section, and the second end of the compressor through-flow section is movably connected with the first end of the compressor outlet section; the wind tunnel displacement compensation device comprises a pull rod structure; the first end of the pull rod structure is connected with the second end of the compressor inlet section, and the second end of the pull rod structure is connected with the first end of the compressor outlet section. The invention connects the compressor inlet section and the compressor outlet section through the pull rod, completely avoids the displacement of the tunnel body outside the compressor through-flow section, and avoids the damage of the wind tunnel displacement to the compressor through-flow section.
Description
Technical Field
The invention relates to the field of wind tunnel testing, in particular to a wind tunnel displacement compensation device.
Background
A wind tunnel is a pipeline-shaped experimental device which can manually generate and control airflow so as to simulate the flow of air around an aircraft or an object, measure the action of the airflow on the object and observe physical phenomena. The wind tunnel mainly comprises a tunnel body, a driving system and a measurement control system. In a continuous wind tunnel device, a driving system is generally composed of a controllable motor set and an axial flow compressor driven by the controllable motor set, and the pressure of airflow is increased by rotating a rotor of the compressor to maintain the stable flow of the airflow in a tunnel body.
In the continuous transonic wind tunnel, the pneumatic working condition has a wide variation range and the gas temperature is high, so that the whole tunnel body can generate large displacement in the operation process. In order to avoid damage to the compressor through-flow section caused by the fact that the hole displacement is transmitted to the compressor through-flow section, expansion joints and other devices are additionally arranged on the compressor inlet section or the compressor outlet section of some wind tunnels to absorb the hole displacement. However, some large continuous transonic wind tunnels have large tunnel body sizes, so that equipment for absorbing the displacement of the tunnel body is very difficult in design, manufacture, transportation, assembly and the like.
Therefore, a new displacement compensation device needs to be developed to absorb the displacement generated by the hole body and avoid the damage to the compressor through-flow section.
Disclosure of Invention
Accordingly, the present invention provides a method.
Specifically, the method comprises the following technical scheme:
a wind tunnel displacement compensation device is provided, the wind tunnel is applied in a wind tunnel system,
the wind tunnel system comprises a compressor outlet section, a compressor inlet section and a compressor through-flow section, wherein a first end of the compressor through-flow section is movably connected with a second end of the compressor inlet section, and a second end of the compressor through-flow section is movably connected with a first end of the compressor outlet section;
the wind tunnel displacement compensation device comprises a pull rod structure;
the first end of the pull rod structure is connected with the second end of the compressor inlet section, and the second end of the pull rod structure is connected with the first end of the compressor outlet section.
Preferably, the number of the pull rod structures is multiple, and the pull rod structures are uniformly arranged along the circumferential direction of the axis of the compressor through-flow section.
Preferably, a first supporting seat is arranged on the outer wall of the inlet section of the compressor, and a first end of the pull rod structure is fixedly connected with the first supporting seat;
the outer wall of the compressor outlet section is provided with a second supporting seat, and the second end of the pull rod structure is movably connected with the second supporting seat.
Preferably, a mounting hole is formed in the first support seat, an internal thread is formed in the mounting hole, an external thread is formed at the first end of the pull rod structure, and the first end of the pull rod structure is in threaded connection with the mounting hole.
Preferably, be equipped with the mounting hole on the first supporting seat, the first end of pull rod structure is equipped with lock nut and external screw thread, the first end of pull rod structure runs through the mounting hole, lock nut is equipped with two, two the equal spiro union of lock nut is in on the external screw thread, one lock nut sets up one side of mounting hole, another lock nut sets up the opposite side of mounting hole, two lock nut sets up relatively.
Preferably, the second support seat is provided with a joint bearing, and the second end of the pull rod structure is connected with the joint bearing.
Preferably, the wind tunnel displacement compensation device comprises a positioning pin and a fastener;
a first connecting plate and a second connecting plate are arranged at the second end of the pull rod structure, the first connecting plate and the second connecting plate are arranged oppositely, a first through hole is formed in the first connecting plate, and a second through hole is formed in the second connecting plate;
the joint bearing is arranged between the first connecting plate and the second connecting plate, and a bearing hole, the first through hole and the second through hole of the joint bearing are coaxially arranged;
the locating pin runs through first through-hole, joint bearing's dead eye and the second through-hole in proper order, the fastener sets up the locating pin runs through first through-hole, joint bearing's dead eye with the one end of second through-hole.
Preferably, the fastener includes a fixing cover and a fixing bolt;
the positioning pin is provided with a plurality of fixing holes, and the plurality of fixing holes are formed in the end face of one end, penetrating through the first through hole, the bearing hole of the joint bearing and the second through hole, of the positioning pin;
the diameter of the fixing cover is larger than that of the second through hole, a plurality of assembling holes are formed in the fixing cover, and the assembling holes and the fixing holes are arranged in a one-to-one correspondence mode;
the fixing hole is provided with an internal thread, one side of the fixing cover is abutted to one end face of the positioning pin, the other side of the fixing cover is abutted to a nut of the bolt, and the fixing bolt penetrates through the assembling hole and is in threaded connection with the fixing hole.
Preferably, the wind tunnel displacement compensation device comprises a first sealing structure and a second sealing structure;
the compressor through-flow section is provided with a sealing gland, the sealing gland is annularly arranged on the end surfaces of two sides of the compressor through-flow section, the sealing gland on one side extends towards the direction of the compressor inlet section, and the sealing gland on the other side extends towards the direction of the compressor outlet section;
a first sealing groove is formed in the outer wall of the second end of the compressor inlet section, the first sealing structure is arranged in the first sealing groove, and the first sealing structure is respectively abutted against the groove bottom of the first sealing groove and the sealing gland;
a second sealing groove is formed in the outer wall of the first end of the compressor outlet section, the second sealing structure is arranged in the second sealing groove, and the second sealing structure is respectively abutted against the groove bottom of the second sealing groove and the sealing gland;
the compressor through-flow section is provided with a gap between the end surface of the sealing gland and the second end surface of the compressor inlet section, and the compressor through-flow section is provided with a gap between the end surface of the sealing gland and the first end surface of the compressor outlet section.
Preferably, the first sealing structure and the second sealing structure are both inflatable sealing structures.
The technical scheme provided by the invention at least has the following beneficial effects:
the invention provides a wind tunnel displacement compensation device, which is characterized in that a compressor inlet section and a compressor outlet section are connected through a pull rod, so that the displacement of a tunnel body is completely avoided outside a compressor through-flow section, and the damage of the wind tunnel displacement to the compressor through-flow section is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the installation of the tie bar structure of the present invention;
FIG. 2 is a schematic view of a pull rod structure according to the present invention;
FIG. 3 isbase:Sub>A schematic view of the cross-sectional structure A-A of FIG. 2;
fig. 4 is a schematic view of a partial cross-sectional structure at I in fig. 1.
The reference numerals in the figures are denoted respectively by:
100-compressor outlet section; 101-a second support seat; 102-knuckle bearing; 103-a second seal groove; 200-compressor through-flow section; 201-sealing gland; 300-compressor inlet section; 301-a first support; 302-a first seal groove; 400-a tie rod structure; 4011-a first connection board; 4012-a second connecting plate; 402-a lock nut; 403-positioning pins; 404-a stationary cover; 405-a fixing bolt; 501-a first sealing structure; 502-a second sealing structure.
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
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 some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Before the embodiments of the present invention are described in further detail, terms of orientation in the embodiments of the present invention, such as "upper", "lower", and "side", are not intended to limit the scope of the present invention, based on the orientation shown in fig. 1.
In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to fig. 3, this embodiment describes a wind tunnel displacement compensation device, a wind tunnel is applied to a wind tunnel system, the wind tunnel system includes a compressor outlet section 100, a compressor inlet section 300 and a compressor through-flow section 200, a first end of the compressor through-flow section 200 is movably connected to a second end of the compressor inlet section 300, and a second end of the compressor through-flow section 200 is movably connected to a first end of the compressor outlet section 100; the wind tunnel displacement compensation device comprises a pull rod structure 400; the first end of the tie structure 400 is connected to the second end of the compressor inlet section 300 and the second end of the tie structure 400 is connected to the first end of the compressor outlet section 100.
Further, the wind tunnel system in this embodiment includes a wind tunnel and a compressor, an outlet of the wind tunnel is connected to the first end of the compressor inlet section 300, and an inlet of the wind tunnel is connected to the second end of the compressor outlet section 100. Due to the pressure difference and temperature difference existing in the air flowing inside the wind tunnel, the wind tunnel and the pipeline will generate axial thermal displacement, and the displacement will act on the compressor inlet section 300 and the compressor outlet section 100. Because the compressor inlet section 300 and the compressor 100 are connected together through the pull rod structure 400, when thermal displacement is transmitted to the compressor inlet section 300 or the compressor outlet section 100, the compressor inlet section 300 and the compressor outlet section 100 generate synchronous displacement in the same direction under the action of the pull rod structure 400, and in the process, the compressor through-flow section 200 is completely avoided, so that the damage of the thermal displacement to the compressor through-flow section 200 is avoided.
Further, since the compressor inlet section 300 and the compressor outlet section 100 are respectively movably connected to the compressor flow passage section 200, when thermal displacement is transmitted to the compressor inlet section 300 or the compressor outlet section 100, the compressor outlet section 100 and the compressor inlet end 300 are synchronously displaced in the same direction, which generates displacement at the movable connection position, but the movable connection position is provided with a space for absorbing the thermal displacement, so that the generated thermal displacement is not applied to the compressor flow passage section 200, thereby preventing the thermal displacement from damaging the compressor flow passage section 200.
As shown in fig. 1, in the present embodiment, a plurality of tie structures 400 are provided, and the plurality of tie structures 400 are uniformly arranged along the circumferential direction of the axis of the compressor flow passage section 200. The size of the compressor in the continuous transonic wind tunnel system is large, the plurality of pull rod structures 400 enable the transfer of thermal displacement between the compressor inlet section 300 and the compressor outlet section 100 to be more uniform, damage to the structures of the compressor inlet section 300 and the compressor inlet and outlet section 100 is avoided, and safe and stable operation of the compressor is guaranteed.
As shown in fig. 1, the outer wall of the compressor inlet section 300 is provided with a first supporting seat 301, and a first end of the pull rod structure 400 is fixedly connected with the first supporting seat 301; the outer wall of the compressor outlet section 100 is provided with a second supporting seat 101, and the second end of the pull rod structure 400 is movably connected with the second supporting seat 101.
Further, the first support seat 301 is disposed on an outer wall of the compressor inlet section 300, and extends in a radial direction of the compressor inlet section 300 toward a direction away from the compressor inlet section 300. The second support seat 101 is disposed on an outer wall of the compressor outlet section 100, and extends in a radial direction of the compressor outlet section 100 toward a direction away from the compressor outlet section 100. The distance that the first support base 301 extends to the outside of the compressor inlet section 300 and the distance that the second support base 101 extends to the outside of the compressor outlet section 100 are required to ensure that the outer wall of the tie rod structure 400 does not collide with the outer wall of the compressor flow passage section 200.
Referring to fig. 2, in the first embodiment, a mounting hole is formed in the first supporting seat 301, the mounting hole is internally threaded, a first end of the pull rod structure 400 is externally threaded, and the first end of the pull rod structure 400 is threadedly coupled with the mounting hole.
Referring to fig. 2, in the second embodiment, a mounting hole is formed in the first support base 301, a lock nut 402 and an external thread are formed at the first end of the pull rod structure 400, the first end of the pull rod structure 400 penetrates through the mounting hole, two lock nuts 402 are provided, two lock nuts 402 are screwed on the external thread, one lock nut 402 is disposed at one side of the mounting hole, the other lock nut 402 is disposed at the other side of the mounting hole, and the two lock nuts 402 are disposed oppositely.
Further, the mounting hole is arranged coaxially with the pull rod structure 400, and the axis of the pull rod structure 400 is parallel to the axis of the compressor through-flow section 200 in this embodiment. During specific installation, a locking nut 402 is firstly sleeved on the external thread of the pull rod structure 400, then one end of the external thread of the pull rod structure 400 is inserted into the installation hole, and one end penetrating through the installation hole is sleeved with the locking nut 402, and at the moment, the two locking nuts 402 are in a loosening state. And then, the pull rod structure 400 and the second support seat 101 are installed, and after the pull rod structure 400 and the second support seat 101 are installed, the two locking nuts 402 are locked, so that the two locking nuts 402 are tightly abutted to the first support seat 301.
As shown in fig. 3, in this embodiment, the second support base 101 is provided with a knuckle bearing 102, and the second end of the pull rod structure 400 is connected to the knuckle bearing 102. Due to the fact that the diameter of the wind tunnel is large, machining deviation may cause that thermal displacement generated by the wind tunnel is not strict axial thermal displacement and circumferential displacement may exist, the arrangement of the knuckle bearing 102 can absorb the circumferential displacement, and damage to the compressor through-flow section 200 caused by the displacement is avoided.
Furthermore, the knuckle bearing 102 can swing within a certain angle and has the advantages of large loading capacity, wear resistance and self-alignment, so that the pull rod structure can be smoothly installed under the condition that the sizes of the tunnel pipelines deviate, and the assembly difficulty is reduced.
As shown in fig. 2 and 3, the wind tunnel displacement compensation device comprises a positioning pin 403 and a fastener; a first connecting plate 4011 and a second connecting plate 4012 are arranged at the second end of the pull rod structure 400, the first connecting plate 4011 and the second connecting plate 4012 are arranged oppositely, a first through hole is formed in the first connecting plate 4011, and a second through hole is formed in the second connecting plate 4012; the joint bearing 102 is arranged between the first connecting plate 4011 and the second connecting plate 4012, and a bearing hole, a first through hole and a second through hole of the joint bearing 102 are coaxially arranged; the positioning pin 403 penetrates through the first through hole, the bearing hole of the joint bearing 102 and the second through hole in sequence, and the fastener is arranged at one end of the positioning pin 403 penetrating through the first through hole, the bearing hole of the joint bearing 102 and the second through hole.
Further, the first connecting plate 4011 and the second connecting plate 4012 clamp the joint bearing 102 in the middle, the axis of the bearing hole of the joint bearing 102 is perpendicular to the axis of the compressor through-flow section 200, and the joint bearing 102 has a moving space between the first connecting plate 4011 and the second connecting plate 4012, so that the circumferential thermal displacement generated by the wind tunnel can be absorbed.
As shown in fig. 3, the fastener includes a fixing cap 404 and a fixing bolt 405; a plurality of fixing holes are formed in the positioning pin 403, the axis of each fixing hole is parallel to the axis of the positioning pin 403, and the plurality of fixing holes are formed in the end faces of one end, penetrating through the first through hole, the bearing hole of the joint bearing 102 and the second through hole, of the positioning pin 403; the diameter of the fixing cover 404 is larger than that of the second through hole, a plurality of assembling holes are formed in the fixing cover 404, and the assembling holes and the fixing holes are arranged in a one-to-one correspondence manner; the fixed orifices is equipped with the internal thread, and one side of fixed lid 404 offsets with the one end terminal surface of locating pin 403, and the opposite side of fixed lid 404 offsets with the nut of bolt, and fixing bolt 405 passes the pilot hole and the fixed orifices spiro union.
Further, the diameter of the fixing cap 404 is larger than that of the second through hole so that the positioning pin 403 does not fall off.
As shown in FIG. 1, the axis of the drawbar arrangement 400 is parallel to the axis of the compressor through-flow segment 200.
As shown in fig. 1, the wind tunnel displacement compensation device comprises a first sealing structure 501 and a second sealing structure 502; a first sealing structure 501 is provided at the junction of the first end of the compressor flow field 200 and the second end of the compressor inlet section 300, and a second sealing structure 502 is provided at the junction of the second end of the compressor flow field 200 and the first end of the compressor outlet section 100.
Further, as shown in fig. 1 and 4, the compressor through-flow segment 200 is provided with a sealing gland 201, the sealing gland 201 is annularly arranged on two side end surfaces of the compressor through-flow segment 200, the sealing gland 201 on one side extends towards the compressor inlet segment 300, and the sealing gland 201 on the other side extends towards the compressor outlet segment 100. The diameter of the gland 201 is larger than the diameter of the second end port of the compressor inlet section 300, and the diameter of the gland 201 is larger than the diameter of the first end port of the compressor outlet section 100. A first sealing groove 302 is arranged on the outer wall of the second end of the compressor inlet section 300, the first sealing structure 501 is an inflating sealing mechanism and is arranged in the first sealing groove 302, and after inflation, the first sealing structure 501 is respectively abutted against the groove bottom of the first sealing groove 302 and the sealing gland 201. The outer wall of the first end of the compressor outlet section 100 is provided with a second sealing groove 103, the second sealing structure 502 is an inflatable sealing mechanism and is arranged in the second sealing groove 103, and the second sealing structure 502 is respectively abutted against the groove bottom of the second sealing groove 103 and the sealing gland 201 after being inflated.
Further, as shown in fig. 4, there is a space between the end surface of the compressor through-flow segment 200 provided with the gland 201 and the second end surface of the compressor inlet segment 300, while there is a space between the end surface of the compressor through-flow segment 200 provided with the gland 201 and the first end surface of the compressor outlet segment 100. The axial thermal displacement generated by the wind tunnel can be absorbed by the interval arrangement, so that the generated thermal displacement can not act on the compressor through-flow section 200, the damage of the thermal displacement to the compressor through-flow section 200 is avoided, and the safe and stable operation of the compressor is ensured.
The pull rod structure 400 in the embodiment is not limited by the scale of the wind tunnel body, and can replace devices such as an expansion joint and the like on large wind tunnel equipment, so that the design difficulty is reduced, and the economic cost can be saved. Meanwhile, the pull rod structure 400 is convenient to disassemble and assemble, so that the wind tunnel equipment is convenient to overhaul and maintain, the design, manufacture and transportation difficulty of the pull rod structure 400 is low, and the economic cost of the wind tunnel equipment can be reduced.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless explicitly defined otherwise.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A wind tunnel displacement compensation device is characterized in that the wind tunnel is applied to a wind tunnel system,
the wind tunnel system comprises a compressor outlet section, a compressor inlet section and a compressor through-flow section, wherein a first end of the compressor through-flow section is movably connected with a second end of the compressor inlet section, and a second end of the compressor through-flow section is movably connected with a first end of the compressor outlet section;
the wind tunnel displacement compensation device comprises a pull rod structure;
the first end of the pull rod structure is connected with the second end of the compressor inlet section, and the second end of the pull rod structure is connected with the first end of the compressor outlet section;
the outer wall of the inlet section of the compressor is provided with a first supporting seat, and the first end of the pull rod structure is fixedly connected with the first supporting seat;
the outer wall of the outlet section of the compressor is provided with a second supporting seat, and the second end of the pull rod structure is movably connected with the second supporting seat;
and the second support seat is provided with a joint bearing, and the second end of the pull rod structure is connected with the joint bearing.
2. The wind tunnel displacement compensation device according to claim 1,
the pull rod structures are arranged in a plurality and are uniformly distributed along the circumferential direction of the axis of the through-flow section of the compressor.
3. A wind tunnel displacement compensation device according to claim 1,
the first support seat is provided with a mounting hole, the mounting hole is provided with an internal thread, the first end of the pull rod structure is provided with an external thread, and the first end of the pull rod structure is in threaded connection with the mounting hole.
4. A wind tunnel displacement compensation device according to claim 1,
be equipped with the mounting hole on the first supporting seat, the first end of pull rod structure is equipped with lock nut and external screw thread, the first end of pull rod structure runs through the mounting hole, lock nut is equipped with two, two the equal spiro union of lock nut is in on the external screw thread, one lock nut sets up one side of mounting hole, another lock nut sets up the opposite side of mounting hole, two lock nut sets up relatively.
5. A wind tunnel displacement compensation device according to claim 1,
the wind tunnel displacement compensation device comprises a positioning pin and a fastening piece;
a first connecting plate and a second connecting plate are arranged at the second end of the pull rod structure, the first connecting plate and the second connecting plate are arranged oppositely, a first through hole is formed in the first connecting plate, and a second through hole is formed in the second connecting plate;
the joint bearing is arranged between the first connecting plate and the second connecting plate, and a bearing hole, the first through hole and the second through hole of the joint bearing are coaxially arranged;
the locating pin runs through first through-hole, joint bearing's dead eye and second through-hole in proper order, the fastener sets up the locating pin runs through first through-hole, joint bearing's dead eye and the one end of second through-hole.
6. A wind tunnel displacement compensation device according to claim 5,
the fastener comprises a fixed cover and a fixed bolt;
the positioning pin is provided with a plurality of fixing holes, and the plurality of fixing holes are formed in the end face of one end, penetrating through the first through hole, the bearing hole of the joint bearing and the second through hole, of the positioning pin;
the diameter of the fixing cover is larger than that of the second through hole, a plurality of assembling holes are formed in the fixing cover, and the assembling holes and the fixing holes are arranged in a one-to-one correspondence mode;
the fixing hole is provided with an internal thread, one side of the fixing cover is abutted to one end face of the positioning pin, the other side of the fixing cover is abutted to a nut of the bolt, and the fixing bolt penetrates through the assembling hole and is in threaded connection with the fixing hole.
7. A wind tunnel displacement compensation device according to claim 1,
the wind tunnel displacement compensation device comprises a first sealing structure and a second sealing structure;
the compressor through-flow section is provided with a sealing gland, the sealing gland is annularly arranged on the end surfaces of two sides of the compressor through-flow section, the sealing gland on one side extends towards the direction of the compressor inlet section, and the sealing gland on the other side extends towards the direction of the compressor outlet section;
a first sealing groove is formed in the outer wall of the second end of the compressor inlet section, the first sealing structure is arranged in the first sealing groove, and the first sealing structure is respectively abutted against the groove bottom of the first sealing groove and the sealing gland;
a second sealing groove is formed in the outer wall of the first end of the compressor outlet section, the second sealing structure is arranged in the second sealing groove, and the second sealing structure is respectively abutted against the groove bottom of the second sealing groove and the sealing gland;
the compressor through-flow section is provided with a gap between the end surface of the sealing gland and the second end surface of the compressor inlet section, and the compressor through-flow section is provided with a gap between the end surface of the sealing gland and the first end surface of the compressor outlet section.
8. A wind tunnel displacement compensation device according to claim 7,
the first sealing structure and the second sealing structure are both inflatable sealing structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210874123.2A CN114942117B (en) | 2022-07-25 | 2022-07-25 | Wind tunnel displacement compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210874123.2A CN114942117B (en) | 2022-07-25 | 2022-07-25 | Wind tunnel displacement compensation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114942117A CN114942117A (en) | 2022-08-26 |
| CN114942117B true CN114942117B (en) | 2022-10-21 |
Family
ID=82910895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210874123.2A Active CN114942117B (en) | 2022-07-25 | 2022-07-25 | Wind tunnel displacement compensation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114942117B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115855429A (en) * | 2023-02-22 | 2023-03-28 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Dynamic sealing structure applied to large flexible-wall spray pipe and application method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB590707A (en) * | 1945-01-03 | 1947-07-25 | Boulton Aircraft Ltd | Improvements in and relating to apparatus for determining stresses produced in aircraft by aerodynamic loads sustained during flight |
| CN103630325A (en) * | 2013-12-12 | 2014-03-12 | 中国航天空气动力技术研究院 | Thermal deformation compensation device for high-temperature thermal-structure wind tunnel |
| CN104568374A (en) * | 2014-12-12 | 2015-04-29 | 中国航空工业集团公司北京长城计量测试技术研究所 | Device for calibrating geometric quantity of static calibration table of wind tunnel balance |
| CN109668031A (en) * | 2018-12-09 | 2019-04-23 | 西安航天动力试验技术研究所 | A kind of packaged type heater system mounting platform |
| KR102152660B1 (en) * | 2020-04-20 | 2020-09-08 | 서울대학교산학협력단 | Experimental Apparatus and Method for Real-time Wind-tunnel Hybrid Simulation of Testing Subject |
| CN112033632A (en) * | 2020-08-19 | 2020-12-04 | 中国科学院力学研究所 | Overload-proof compensator capable of bearing atmosphere dynamic load |
| CN114110289A (en) * | 2022-01-26 | 2022-03-01 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Large-compensation compact compensator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446400B (en) * | 2021-06-28 | 2022-05-31 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Sealing system suitable for continuous wind tunnel semi-flexible wall spray pipe |
-
2022
- 2022-07-25 CN CN202210874123.2A patent/CN114942117B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB590707A (en) * | 1945-01-03 | 1947-07-25 | Boulton Aircraft Ltd | Improvements in and relating to apparatus for determining stresses produced in aircraft by aerodynamic loads sustained during flight |
| CN103630325A (en) * | 2013-12-12 | 2014-03-12 | 中国航天空气动力技术研究院 | Thermal deformation compensation device for high-temperature thermal-structure wind tunnel |
| CN104568374A (en) * | 2014-12-12 | 2015-04-29 | 中国航空工业集团公司北京长城计量测试技术研究所 | Device for calibrating geometric quantity of static calibration table of wind tunnel balance |
| CN109668031A (en) * | 2018-12-09 | 2019-04-23 | 西安航天动力试验技术研究所 | A kind of packaged type heater system mounting platform |
| KR102152660B1 (en) * | 2020-04-20 | 2020-09-08 | 서울대학교산학협력단 | Experimental Apparatus and Method for Real-time Wind-tunnel Hybrid Simulation of Testing Subject |
| CN112033632A (en) * | 2020-08-19 | 2020-12-04 | 中国科学院力学研究所 | Overload-proof compensator capable of bearing atmosphere dynamic load |
| CN114110289A (en) * | 2022-01-26 | 2022-03-01 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Large-compensation compact compensator |
Non-Patent Citations (1)
| Title |
|---|
| 连续式跨声速风洞压力损失计算研究;李庆利等;《试验流体力学》;20201231;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114942117A (en) | 2022-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114942117B (en) | Wind tunnel displacement compensation device | |
| US10562640B2 (en) | Turbine engine suspension device | |
| CN105697790A (en) | Air inflation axial sealing device used in vacuum environment | |
| CN206329597U (en) | A kind of locking taper pin of self-locking | |
| CN107448472A (en) | A kind of rigidity adjustable type Water Lubricated Stern Tube Bearing System | |
| CN206001953U (en) | Single tube sheet heat exchanger | |
| JP6516936B1 (en) | Device for securing a blanket module to a fusion reactor vacuum vessel | |
| CN105179772A (en) | Breakaway coupler for hose | |
| CN104538067A (en) | Dismountable cleavage simulating part as well as installation method and cleavage simulation system of dismountable cleavage simulating part | |
| KR20180082620A (en) | Bellows restraining device | |
| CN212745522U (en) | Expansion type pipeline plugging device | |
| US20130312260A1 (en) | Method and device for modifying a secondary air system in a gas turbine engine | |
| CN212776079U (en) | Steam rotary joint sealing device | |
| CN214947272U (en) | Pipe connecting piece and pipe connection structure of pump or compressor | |
| CN114776680B (en) | Novel quick-release circular tube connecting piece structure | |
| CN107956812B (en) | Coupling shield of refrigeration compressor | |
| CN110108492B (en) | Test fixture of head stabilizer | |
| CN220523053U (en) | Pin shaft bushing assembly structure | |
| CN218766324U (en) | Clamp for testing spherical joint hose on airplane | |
| CN220649931U (en) | Casing rupture disc pressure testing device | |
| CN219588097U (en) | Inflatable carbon ring seal for high temperature fan | |
| CN220232085U (en) | BIM design-based prism mounting bracket, prism and measuring system | |
| CN220600205U (en) | Novel anti-tunnel vibration anti-loose segment bolt | |
| CN216344493U (en) | Small-angle deflection flange | |
| CN219244402U (en) | Plugging device for tube array leakage of tube array heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110869 No. 16 A Development Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee after: Shenyang Blower Works Group Corp. Patentee after: SHENYANG TURBO MACHINERY Co.,Ltd. Address before: 110869 No. 16 A Development Road, Shenyang Economic and Technological Development Zone, Liaoning Province Patentee before: SHENYANG BLOWER WORKS Group Corp. Patentee before: SHENYANG TURBO MACHINERY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |