CN115371882A

CN115371882A - Calibration mechanism for torque measuring device of high-power/high-rotating-speed transmission system

Info

Publication number: CN115371882A
Application number: CN202211298973.9A
Authority: CN
Inventors: 陈兵; 黄宇轩; 王彪; 赵汝彬; 王文俊; 张良; 夏联
Original assignee: AECC Sichuan Gas Turbine Research Institute
Current assignee: AECC Sichuan Gas Turbine Research Institute
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2022-11-22
Anticipated expiration: 2042-10-24
Also published as: CN115371882B

Abstract

The invention provides a calibration mechanism of a torque meter of a high-power/high-rotating-speed transmission system, which comprises a fixed support, wherein one end of the fixed support is fixed on the transmission system, and the other end of the fixed support is provided with a tension measuring assembly; the tension measuring assembly comprises a tension sensor, one end of the tension sensor is connected with the output end of the torque measuring device through a tension shaft, the other end of the tension sensor is connected with the fixed support through a transfer shaft, and the center lines of the tension shaft, the transfer shaft and the tension sensor are coincided. The torque meter calibration mechanism can calibrate the torque meter so as to meet the requirement of axial force balance under the working conditions of high temperature, high load and high rotating speed and achieve the aim of reducing test risks.

Description

Calibration mechanism for torque measuring device of high-power/high-rotating-speed transmission system

Technical Field

The invention belongs to the field of test of aero-engine transmission systems, relates to a calibration and correction technology of a gas compressor part, and particularly relates to a calibration mechanism of a torque meter of a high-power/high-rotating-speed transmission system.

Background

An aircraft engine is a high-temperature, high-load and high-rotation-speed thermal machine, and the working performance of the aircraft engine is continuously improved while the working envelope of the aircraft engine is continuously enlarged and extended. The compressor is one of three major components of an aeroengine, and a warming and pressurizing compressor tester is generally built for testing the performance of the compressor in order to develop the compressor with high performance.

At present, a heating and pressurizing compressor tester can truly simulate the inlet condition of a high-pressure compressor, and obtain the performance, stall boundary and aerodynamic stability of the compressor, the regulation performance and optimization characteristics of a compressor stator blade, the dynamic stress characteristics of a compressor rotor and a stator blade, the radial clearance and influence characteristics of the compressor rotor and the stator blade and the like in the flight envelope range. Compared with a normal-temperature air inlet condition compression component test, the test risk of the heating and pressurizing air inlet condition is extremely high, the problems that equipment and a tested piece are thermally deformed, the axial force of the tested piece is large, a bearing is damaged, an exhaust casing is cracked and the like can occur, and the problem that when the exhaust casing and an air inlet system do not bear the axial force, the test is carried out at a high operation risk can occur.

In order to solve the above problems, a torsion detector with an axial force balancing device is usually added to a warming and pressurizing compressor tester, but at present, no static axial force calibration method is performed on the installed torsion detector, which brings great operating risks to subsequent on-load tests, and therefore research work on the static calibration technology of the axial force balancing device is urgently needed.

Disclosure of Invention

The invention aims to design a calibration mechanism of a torque meter of a high-power/high-rotating-speed transmission system, which can calibrate the torque meter so as to meet the requirement of axial force balance under the working conditions of high temperature, high load and high rotating speed and achieve the aim of reducing test risks.

The technical scheme for realizing the purpose of the invention is as follows: a calibration mechanism of a torque meter of a high-power/high-rotating-speed transmission system comprises a fixed support, wherein one end of the fixed support is fixed on the transmission system, and the other end of the fixed support is provided with a tension measuring assembly;

the tension measuring assembly comprises a tension sensor, one end of the tension sensor is connected with the output end of the torque measuring device through a tension shaft, the other end of the tension sensor is connected with the fixed support through a transfer shaft, and the center lines of the tension shaft, the transfer shaft and the tension sensor are coincided.

Further, the fixed support comprises a cross beam, a through hole is formed in the middle of the cross beam, and the adapter shaft penetrates through the through hole and then is fixed on the cross beam;

bearing arms are respectively arranged at two ends of the cross beam, the other ends of the bearing arms are installed on the transmission system, and front supports are arranged below the bearing arms.

Furthermore, a spherical mounting seat is installed in the through hole, and the adapter shaft passes through the spherical mounting seat and then is fixed on the cross beam.

Furthermore, a front ear seat is arranged at the position of the force bearing arm, which is mounted with the front support.

Furthermore, the two ends of the transfer shaft are provided with transfer discs, a screw rod is arranged at the center of the transfer shaft, and a locking nut penetrates through the screw rod to fix the transfer shaft on the cross beam and the tension sensor.

Further, the tension measuring assembly comprises a level gauge.

Compared with the prior art, the invention has the beneficial effects that: the invention provides an axial force calibration mechanism of a high-power/high-rotating-speed transmission system, which can meet the requirement of axial force balance under the working conditions of high temperature, high load and high rotating speed and reduce the test risk by calibrating a torque measuring device, is suitable for a ground open air suction type compressor tester and a heating and pressurizing compressor tester, fills the blank in the field of calibration of the axial force of the domestic torque measuring device, improves the technical capability of the domestic high-load axial flow compressor test, has higher popularization and application values in the fields of domestic full-working-condition compression part tester development and full-working-condition compressor test, is expected to improve the design and manufacturing capability of the domestic aero-engine compression part tester and generates better economic benefit and social benefit.

Drawings

In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings used in the description of the embodiment will be briefly introduced below. It should be apparent that the drawings in the following description are only for illustrating the embodiments of the present invention or technical solutions in the prior art more clearly, and that other drawings can be obtained by those skilled in the art without any inventive work.

Fig. 1 is a schematic structural diagram of a calibration mechanism of a torque meter in a specific embodiment;

FIG. 2 is a schematic view of the assembly of a cross beam and a force-bearing arm in the embodiment;

FIG. 3 is a schematic diagram of an adapter plate, a lock nut, and a screw at an end of a transfer shaft according to an embodiment;

FIG. 4 is a schematic diagram of a torque meter calibration mechanism in an embodiment assembled with a high power/high speed drive system;

wherein, 1, fixing the support; 2. supporting a lug; 3. a tension shaft; 4. a tension sensor; 5. a transfer shaft; 6. a spherical surface mounting seat; 7. a cross beam; 8. a front ear mount; 9. a front support; 10. a support block; 11. a force bearing arm; 12. locking the nut; 13. a switching disk; 14. a screw.

Detailed Description

The invention is further described below in conjunction with specific embodiments, and the advantages and features of the invention will become more apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.

In the description of the present embodiments, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality" means two or more unless otherwise specified.

The specific embodiment provides a calibration mechanism for a torque meter of a high-power/high-rotation-speed transmission system, as shown in fig. 4, the calibration mechanism for the torque meter comprises a fixed support 1, one end of the fixed support 1 is fixed on the transmission system, and the other end of the fixed support is provided with a tension measurement assembly.

In some embodiments, as shown in fig. 1, the tension measuring assembly includes a tension sensor 4, one end of the tension sensor 4 is connected to a torque meter (the torque meter is installed on a high-power/high-speed transmission system) through a tension shaft 3, the other end is connected to the fixed support 1 through an adapter shaft 5, and the center lines of the tension shaft 3, the adapter shaft 5 and the tension sensor 4 are coincident.

In some embodiments, as shown in fig. 1 and 2, the fixed support 1 includes a cross beam 7, a through hole is formed in the middle of the cross beam 7, and the transfer shaft 5 passes through the through hole to fix the transfer shaft 5 on the cross beam 7; bearing arms 11 are respectively arranged at two ends of the cross beam 7, a front support 9 is arranged below the bearing arms 11, and the other ends of the bearing arms 11 are installed on a transmission system. Specifically, the free end of the bearing arm 11 is provided with a mounting hole, and a bolt penetrates through the mounting hole and a hole on the supporting block 10 to be mounted and fixed on the transmission system.

In some embodiments, in order to avoid the problem that the coupling shaft 5 and the tension shaft 3 are not concentric (i.e. not in the same horizontal line), as shown in fig. 1 and 4, a spherical mounting seat 6 is installed in the through hole, and the coupling shaft 5 passes through the spherical mounting seat 6 to fix the coupling shaft 5 on the cross beam 7. The spherical cushion block in the spherical mounting seat 6 can balance the problem of non-concentricity of the tension sensor 4 and the tension shaft 3 during mounting, and the measurement precision can be improved.

In some embodiments, as shown in fig. 1 and 4, a front ear seat 8 is disposed at a position on the bearing arm 11 where the front support 9 is mounted, the front ear seat 8 is fixed on the bearing arm 11 by a bolt, and meanwhile, since 2 bearing arms 11 need to be on the same horizontal line, so that the cross beam 7 is horizontal, thereby avoiding a phenomenon that a vertical component occurs in a tensile force during operation, and a support ear 2 can be disposed between the front ear seat 8 and the bearing arm 11 to adjust the two bearing arms 11.

In some embodiments, as shown in fig. 3, adapter discs 13 are disposed at both ends of the adapter shaft 5, a screw 14 is disposed at the center of the adapter shaft 5, and a lock nut 12 penetrates through the screw 14 to fix the adapter shaft 5 on the cross beam 7 and the tension sensor 4.

In some embodiments, not shown in the drawings, in order to ensure the levelness of each component in the calibration mechanism, the tension measuring assembly comprises a level measuring instrument which can measure the levelness of different parts, such as the bearing arm 11, the cross beam 7, the tension shaft 3, the transfer shaft 5 and the like.

The calibration mechanism of the torque meter provided by the specific embodiment has the following use process:

firstly, connecting a fixed support 1 with a transmission system, and adjusting the horizontal position of the fixed support 1 to ensure that a connecting line of a through hole of a cross beam 7 and a torque meter is coaxial with an output shaft of the torque meter; and then, installing a tension measuring assembly between the cross beam 7 and the output end of the torque meter, and leveling the calibration mechanism by using a level meter to improve the measurement precision and complete the installation of the calibration mechanism of the torque meter, as shown in fig. 4.

Secondly, an external force (which can be a pulling force or a pushing force) is applied to the connecting shaft 5 for n times, and the measured result is output after the tension sensor 4 and the torque meter are stressed.

And finally, calculating the difference value between the measured value of the tension sensor 4 and the measured value of the torque meter after the external force is applied each time, and calculating the average value of the n-time measured results, namely the average value is used as the basis for correcting the measured result of the torque meter when the high-power/high-rotating-speed transmission system works.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A calibration mechanism for a torque meter of a high-power/high-rotating-speed transmission system is characterized in that: the tension measuring device comprises a fixed support (1), wherein one end of the fixed support (1) is fixed on a transmission system, and the other end of the fixed support is provided with a tension measuring assembly;

the tension measuring assembly comprises a tension sensor (4), one end of the tension sensor (4) is connected with the output end of the torque measuring device through a tension shaft (3), the other end of the tension sensor is connected with the fixed support (1) through a switching shaft (5), and the tension shaft (3), the switching shaft (5) and the center lines of the tension sensor (4) coincide.

2. The torsion meter calibration mechanism of claim 1, wherein: the fixed support (1) comprises a cross beam (7), a through hole is formed in the middle of the cross beam (7), and the transfer shaft (5) penetrates through the through hole and then fixes the transfer shaft (5) on the cross beam (7);

the bearing arm (11) is arranged at each of two ends of the cross beam (7), the other end of the bearing arm (11) is installed on the transmission system, and the front support (9) is arranged below the bearing arm (11).

3. The torsion meter calibration mechanism of claim 2, wherein: and a spherical mounting seat (6) is mounted in the through hole, and the transfer shaft (5) passes through the spherical mounting seat (6) and then is fixed on the cross beam (7).

4. The torsion meter calibration mechanism of claim 2, wherein: and a front ear seat (8) is arranged at the position on the bearing arm (11) where the front support (9) is arranged.

5. A calibration mechanism for a torque meter according to claim 2 or 3, wherein: the two ends of the transfer shaft (5) are provided with transfer discs (13), the center of the transfer shaft (5) is provided with a screw rod (14), and a locking nut (12) penetrates through the screw rod (14) to fix the transfer shaft (5) on the cross beam (7) and the tension sensor (4).

6. The torsion meter calibration mechanism of claim 1, wherein: the tension measuring assembly includes a level gauge.