CN117444873A - Clamp and method for simulating working state of turbine rotor - Google Patents
Clamp and method for simulating working state of turbine rotor Download PDFInfo
- Publication number
- CN117444873A CN117444873A CN202311392078.8A CN202311392078A CN117444873A CN 117444873 A CN117444873 A CN 117444873A CN 202311392078 A CN202311392078 A CN 202311392078A CN 117444873 A CN117444873 A CN 117444873A
- Authority
- CN
- China
- Prior art keywords
- turbine rotor
- nut
- turbine
- simulating
- blade
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 23
- 230000033001 locomotion Effects 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000004088 simulation Methods 0.000 claims abstract description 6
- 239000000306 component Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a clamp for simulating the working state of a turbine rotor, which comprises a top pin arranged in a vent hole of a mortise of a turbine disk, a force application part connected with the top pin, and a supporting part for installing the force application part; the middle part of the force application part is movably connected with the supporting part. The invention also discloses a method for simulating the working state of the turbine rotor, which comprises the following steps: s1, determining the working principle of the simulated aero-engine, namely jacking up a blade to enable the blade tenon and the disc tenon groove to be tightly jacked without gaps; s2, mounting the ejector pin in a vent hole of a tenon groove of the turbine disc; s3, by utilizing a screw thread transmission principle, the rotary motion of the nut is converted into the linear motion of the pressing hook by screwing the nut, so that a force is applied to the ejector pin, the force is transmitted to the tenon of the turbine blade, and the blade is lifted up, so that the simulation of the working state of the turbine rotor is realized. The invention has simple operation, easy realization, better simulation of the working state of the aeroengine and better control of the clearance between the turbine rotor and the casing.
Description
Technical Field
The invention belongs to the technical field of aeroengine manufacturing, and particularly relates to a clamp and a method for simulating the working state of a turbine rotor.
Background
When the high-pressure turbine rotor of the engine is used as a core component of the engine, the high-pressure turbine rotor and a corresponding casing have extremely high clearance requirements, once the clearance is too large, engine gas leakage can be caused, the engine efficiency is reduced, and once the clearance is too small, the turbine rotor rotating at high speed can collide with the casing, so that the clearance between the turbine rotor and the casing is controlled very important.
The engine manufacturing process and the final working state have larger working condition difference, the engine rotor rotates at a high speed in the working state, and the blades are subjected to extremely large centrifugal force, so that the outer diameter of the rotor is larger than that in the free state in the manufacturing process, and further, the gap between the blade tip of the high-vortex rotor and the casing is difficult to control.
The high-pressure turbine rotor comprises parts such as a high-pressure turbine disk, high-pressure turbine blades and an opening baffle ring, the only available space is the vent hole inside the turbine disk mortise, the vent hole is only a hole with the diameter of 5mm, the space is small, a radial force needs to be applied on the blades for jacking the blades, and the space with the diameter of 5mm is difficult to accommodate a mechanism capable of generating the radial force.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a clamp and a method for simulating the working state of a turbine rotor, so as to solve the problem that the clearance between the tip of the high-vortex rotor and a casing is difficult to control in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the clamp for simulating the working state of the turbine rotor comprises a top pin arranged in a vent hole of a mortise of a turbine disk, a force application component connected with the top pin, and a supporting component for installing the force application component; the middle part of the force application part is movably connected with the supporting part.
The force application component comprises a pressing hook connected with the ejector pin and a nut connected with the pressing hook; the jacking pins are arranged in one-to-one correspondence with the pressing hooks.
One end of the pressing hook is provided with a hook connected with the ejector pin, and the other end of the pressing hook is provided with threads connected with the nut.
Four holes which are crossed in a cross shape are symmetrically arranged on the nut.
The supporting part is provided with a positioning ring, and the pressing hook penetrates through the positioning ring and is connected with the ejector pin.
The nut is connected with the side wall of the positioning ring in a contact way, and a gasket is arranged between the nut and the positioning ring.
The locating ring is mounted on the turbine disk.
A method of simulating the operating condition of a turbine rotor comprising the steps of:
s1, determining the working principle of the simulated aero-engine, namely jacking up a blade to enable the blade tenon and the disc tenon groove to be tightly jacked without gaps;
s2, mounting the ejector pin in a vent hole of a tenon groove of the turbine disc;
s3, by utilizing a screw thread transmission principle, the rotary motion of the nut is converted into the linear motion of the pressing hook by screwing the nut, so that a force is applied to the ejector pin, the force is transmitted to the tenon of the turbine blade, and the blade is lifted up, so that the simulation of the working state of the turbine rotor is realized.
Compared with the prior art, the invention has the following advantages:
according to the clamp and the method for simulating the working state of the turbine rotor, the rotation motion of the nut is converted into the linear motion of the pressing hook by utilizing the screw thread transmission principle, and the pressing hook transmits force to the top pin, so that the force is further transmitted to the turbine blade, and the purpose of jacking the blade to simulate the working state of the turbine rotor is achieved.
The method is simple in operation, easy to realize, capable of better simulating the working state of the aeroengine, capable of combining and processing the outer diameter of the blade tip when the blade is in the jacking state, and capable of obtaining the rotor outer diameter which is close to the outer diameter of the working state when the rotor of the engine works, and capable of providing reference for better controlling the gap between the turbine rotor and the casing.
Drawings
In order to more clearly illustrate the technical solutions of specific embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic view of a part of a clamp for simulating the working state of a turbine rotor according to the present invention;
FIG. 2 is a schematic view of the positioning ring structure in the invention;
FIG. 3 is a cross-sectional view taken at D-D of FIG. 2;
FIG. 4 is a cross-sectional view taken at C-C of FIG. 2;
FIG. 5 is a schematic view of the structure of the press hook of the present invention;
FIG. 6 is a schematic view of the structure of the nut of the present invention;
reference numerals: 1-ejector pin, 2-press hook, 3-nut, 4-positioning ring and 5-washer.
Detailed Description
The present invention will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this invention pertains are included within the scope of the present invention without departing from the above technical idea of the invention.
Referring to fig. 1 to 6, a jig for a turbine rotor according to the present invention for simulating an operation state thereof includes a knock pin 1 provided in a groove vent hole of a turbine disk, a force applying member connected to the knock pin 1, and a support member for mounting the force applying member; the middle part of the force application part is movably connected with the supporting part.
Specifically, the ejector pin 1 is obliquely arranged in the vent hole of the tenon groove of the turbine disk, the ejector pin 1 plays a role in transmitting motion and force, one end of the ejector pin 1 is in contact with the bottom of the tenon of the turbine blade, and the force can be transmitted to the tenon of the turbine blade only by applying a force along the axial direction of the ejector pin 1 at the other end of the ejector pin 1, so that the blade is subjected to the force of radial ejection.
Each blade corresponds to a mortise, and each mortise is provided with a jacking pin 1, namely the jacking pins 1 are arranged in one-to-one correspondence with the number of the mortises. For example, the entire turbine rotor has 84 mortises, then the entire turbine rotor requires 84 sets of ejector pins 1. In operation, it is necessary to uniformly apply an axial force to 84 knock pins 1 by the urging member.
The force application component comprises a pressing hook 2 connected with the ejector pin 1 and a nut 3 connected with the pressing hook 2; the jacking pins 1 are arranged in one-to-one correspondence with the pressing hooks 2. One end of the press hook 2 is provided with a hook connected with the knock pin 1, and the other end is provided with threads connected with the nut 3. In this embodiment, the angle of the hook is 114 ° 36', which ensures that the hook 2 is perpendicular to the pin 1, and that the movement and force is transferred to the pin 1 with maximum efficiency.
Four holes intersecting in a cross are symmetrically arranged on the nut 3. The setting of nut 3 structure is convenient limited space operation, through screwing up nut 3, makes the rotary motion of nut 3 change into the rectilinear motion who presses hook 2 to on transmitting the knock pin 1 with power and motion through the hook that presses hook 2, and then on transmitting turbine blade tenon, reach the purpose with the blade jack-up, thereby realize the effect of turbine rotor simulation its operating condition.
The supporting part is provided with a positioning ring 4, and the pressing hook 2 penetrates through the positioning ring 4 and is connected with the ejector pin 1. The locating ring 4 is arranged on the turbine disk, when 84 jacking pins 1 are arranged, 84 pressing hooks 2 are correspondingly arranged, and the 84 pressing hooks 2 are uniformly arranged on the locating ring 4.
The nut 3 is in contact connection with the side wall of the positioning ring 4, and a washer 5 is arranged between the nut 3 and the positioning ring 4.
The invention relates to a method for simulating the working state of a turbine rotor, which essentially comprises the steps of jacking up blades and simulating the working condition that the blades are thrown away by centrifugal force when the turbine rotor of an engine works, wherein the method comprises the following steps:
s1, determining the working principle of the simulated aero-engine, namely jacking up a blade to enable the blade tenon and the disc tenon groove to be tightly jacked without gaps;
s2, mounting the ejector pin 1 in a vent hole of a tenon groove of the turbine disc;
S3.S3. by utilizing a thread transmission principle, the rotation motion of the nut is converted into the linear motion of the pressing hook by screwing the nut, so that a force is applied to the jacking pin, the force is transmitted to the tenon of the turbine blade, and the blade jacks up, so that the simulation of the working state of the turbine rotor is realized. The screw nut 3 is screwed, the rotation motion of the screw nut 3 is converted into the linear motion of the press hook 2 in the positioning ring by utilizing the screw transmission principle, the force and the motion are transmitted to the ejector pin 1 through the hook of the press hook 2, and then the force and the motion are transmitted to the tenon of the turbine blade, so that the purpose of jacking the blade is achieved, and the effect that the turbine rotor simulates the working state of the turbine rotor is achieved.
The above description is provided for the detailed description of the clamp and the method for simulating the working state of the turbine rotor, and specific examples are applied to the description of the structure and the working principle of the turbine rotor, and the description of the above embodiments is only used for helping to understand the method and the core idea of the invention. It should be noted that it will be apparent to those skilled in the art that various improvements and modifications can be made to the present invention without departing from the principles of the invention, and such improvements and modifications fall within the scope of the appended claims.
Claims (8)
1. The utility model provides a turbine rotor simulate anchor clamps of its operating condition which characterized in that: the device comprises a top pin (1) arranged in a vent hole of a tenon groove of the turbine disc, a force application component connected with the top pin (1), and a supporting component for installing the force application component; the middle part of the force application part is movably connected with the supporting part.
2. A clamp for simulating the operation of a turbine rotor in accordance with claim 1, wherein: the force application component comprises a pressing hook (2) connected with the ejector pin (1), and a nut (3) connected with the pressing hook (2); the jacking pins (1) are arranged in one-to-one correspondence with the pressing hooks (2).
3. A clamp for simulating the operation of a turbine rotor in accordance with claim 2, wherein: one end of the pressing hook (2) is provided with a hook connected with the ejector pin (1), and the other end is provided with threads connected with the nut (3).
4. A clamp for simulating the operation of a turbine rotor according to claim 3, wherein: four holes which are crossed in a cross shape are symmetrically arranged on the nut (3).
5. A clamp for simulating the operation of a turbine rotor in accordance with claim 2, wherein: the supporting part is provided with a positioning ring (4), and the pressing hook (2) penetrates through the positioning ring (4) and is connected with the ejector pin (1).
6. A clamp for simulating the operation of a turbine rotor as defined in claim 5, wherein: the nut (3) is connected with the side wall of the positioning ring (4) in a contact way, and a gasket (5) is arranged between the nut (3) and the positioning ring (4).
7. A clamp for simulating the operation of a turbine rotor as defined in claim 5, wherein: the locating ring is mounted on the turbine disk.
8. A method of simulating the operating condition of a turbine rotor, comprising: the method comprises the following steps:
s1, determining the working principle of the simulated aero-engine, namely jacking up a blade to enable the blade tenon and the disc tenon groove to be tightly jacked without gaps;
s2, mounting the ejector pin (1) in a vent hole of a tenon groove of the turbine disc;
s3, by utilizing a thread transmission principle, the rotation motion of the nut (3) is converted into the linear motion of the pressing hook (2) by screwing the nut (3), so that a force is applied to the ejector pin (1), the force is transmitted to the tenon of the turbine blade, and the blade is lifted up, so that the simulation of the working state of the turbine rotor is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311392078.8A CN117444873A (en) | 2023-10-25 | 2023-10-25 | Clamp and method for simulating working state of turbine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311392078.8A CN117444873A (en) | 2023-10-25 | 2023-10-25 | Clamp and method for simulating working state of turbine rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117444873A true CN117444873A (en) | 2024-01-26 |
Family
ID=89581083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311392078.8A Pending CN117444873A (en) | 2023-10-25 | 2023-10-25 | Clamp and method for simulating working state of turbine rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117444873A (en) |
-
2023
- 2023-10-25 CN CN202311392078.8A patent/CN117444873A/en active Pending
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