CN114136624B - Direction-adjustable thrust measurement rack center loading calibration device - Google Patents
Direction-adjustable thrust measurement rack center loading calibration device Download PDFInfo
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- CN114136624B CN114136624B CN202111222180.4A CN202111222180A CN114136624B CN 114136624 B CN114136624 B CN 114136624B CN 202111222180 A CN202111222180 A CN 202111222180A CN 114136624 B CN114136624 B CN 114136624B
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- standard force
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
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- 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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- 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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention provides a direction-adjustable thrust measuring rack center loading calibration device which comprises a fixed rack, a movable rack arranged on the fixed rack, a simulation engine, a standard force loading mechanism, a pull rod system, a working force measuring sensor and a standard force measuring sensor, wherein the simulation engine is subjected to a standard force which is a pulling force, the standard force loading mechanism is arranged in front of the simulation engine, and the pull rod system penetrates through the simulation engine and is connected with the tail of the simulation engine. The center loading calibration device of the direction-adjustable thrust measurement rack provided by the invention can simulate the real transmission route of the engine thrust on the rack, and can also adjust the direction of the loading force, the standard thrust sensor is always in a horizontal state, and the reading of the standard thrust sensor is the force applied to the axial direction of the simulated engine, so that the measurement accuracy of the engine thrust of the whole machine test is improved.
Description
Technical Field
The invention belongs to the field of aeroengine tests, and particularly relates to a center loading calibration device of a thrust measurement rack with an adjustable direction.
Background
In the whole test process of the aero-engine, the engine thrust is measured through a thrust measuring bench, and in the thrust measuring process, due to the existence of elastic resistance of a spring piece and a connecting pipeline, the engine thrust and a working thrust sensor are not on the same axis (with a height difference), so that the measuring force of the working thrust sensor is not equal to the engine thrust.
Under the influence of the moment generated by the elastic resistance and the height difference, the working thrust sensor measures the force, and the thrust of the engine cannot be accurately and objectively reflected. Therefore, these influencing factors need to be corrected through calibration, and the currently commonly used calibration method is horizontal loading calibration, and the method can only correct the influence of elastic resistance, but not correct the influence of moment generated by the height difference, so that the error of thrust measurement is increased. The center loading calibration is to apply a calibration force to the center of the simulated engine nozzle, and the loading force is transmitted to the working thrust sensor through the simulated engine main pivot, the mounting frame and the movable frame. The advantage of this approach is that the route of thrust transfer at calibration is consistent with the route of thrust transfer at engine test. Therefore, the measuring error caused by the elastic deformation and the additional moment of the force transmission link is eliminated, and the purpose of accurately measuring the thrust of the engine is achieved.
In the center loading calibration process, the standard force loading equipment, the rack force measuring system and the simulated engine supporting structure are deformed due to the action of the load, and as a result, the direction of the calibration force is deviated from the axis of the simulated engine, so that the calibration error is increased.
Therefore, a central loading calibration device of a thrust measuring rack with adjustable direction needs to be provided, the device can ensure that a standard thrust sensor is always in a horizontal state, and the reading of the standard thrust sensor is the force applied by the axial direction of the simulated engine.
Disclosure of Invention
In order to solve the problems, the invention provides a device capable of ensuring that a standard force sensor is always in a horizontal state and the degree of the standard force sensor is the force applied to the axial direction of an analog engine, so as to improve the measurement accuracy of the thrust of the test engine of the whole machine
The invention aims to provide a center loading calibration device of a thrust measuring rack with an adjustable direction, which comprises a fixed rack, a movable rack arranged on the fixed rack through a spring piece, a simulation engine fixed above the movable rack, a standard force loading mechanism for applying standard force to the simulation engine, a pull rod system for transmitting the standard force applied by the standard force loading mechanism to the simulation engine, a working force measuring sensor for measuring force transmitted by the movable rack, and a standard force measuring sensor arranged in the middle of the pull rod system and used for measuring the standard force applied by the standard force loading mechanism, wherein the standard force applied by the simulation engine is a tensile force, the standard force loading mechanism is arranged in front of the simulation engine, and the pull rod system passes through the simulation engine and is connected with the tail part of the simulation engine.
The center loading calibration device of the direction-adjustable thrust measuring bench provided by the invention is further characterized in that the standard force loading mechanism comprises a fixed mounting plate used for fixing, a hydraulic loading cylinder arranged on the fixed mounting plate and used for adjusting the standard force, and a direction adjusting device.
The direction-adjustable thrust measuring bench center loading calibration device provided by the invention is further characterized in that the direction adjusting device is of a cylindrical structure, the hydraulic loading cylinder is arranged in the cylindrical structure, the hydraulic loading cylinder and the cylindrical structure are coaxially arranged, the pull rod system penetrates through the cylindrical structure to be connected with the hydraulic loading cylinder, and a plurality of direction adjusting screws for adjusting the direction of the pull rod system are arranged on the cylindrical structure.
The center loading calibration device of the direction-adjustable thrust measuring bench provided by the invention is further characterized in that the plurality of direction adjusting screws comprise 4 adjusting screws which are arranged at intervals of 90 degrees.
The center loading calibration device of the direction-adjustable thrust measuring rack provided by the invention is further characterized in that the four adjusting screws are respectively arranged on two different cross sections of the cylindrical structure, the distance between the two different cross sections is not smaller than the diameter of the adjusting screws, and the adjusting screws on the same cross section are spaced by 180 degrees.
The central loading calibration device of the direction-adjustable thrust measuring rack provided by the invention is further characterized in that a ball head is arranged at the end part of a first rigid rod connected with the simulation engine, a ball socket matched with the ball head is arranged on the simulation engine, the standard force measuring sensor is arranged on a second rigid rod, two level gauges respectively arranged at two sides of the standard force measuring sensor are arranged on the second rigid rod, two ball bearings respectively arranged at the outer sides of the two level gauges and used for connecting a plumb are arranged on the second rigid rod, and the adjusting screw is arranged around the third rigid rod.
The center loading calibration device of the direction-adjustable thrust measuring bench provided by the invention is further characterized in that a flexible rod is arranged among the first rigid rod, the second rigid rod and the third rigid rod, and the third rigid rod is connected with the hydraulic loading cylinder through the flexible rod.
The center loading calibration device of the direction-adjustable thrust measuring bench provided by the invention is also characterized in that the cylindrical structure is connected with the fixed mounting plate through a flange.
Compared with the prior art, the invention has the following beneficial effects
The center loading calibration device of the direction-adjustable thrust measurement rack provided by the invention can simulate the real transmission route of the engine thrust on the rack, and can also adjust the direction of the loading force, the standard thrust sensor is always in a horizontal state, and the reading of the standard thrust sensor is the force applied to the axial direction of the simulated engine, so that the measurement accuracy of the engine thrust of the whole machine test is improved.
Description of the drawings:
in order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a center loading calibration device for a direction-adjustable thrust measuring bench according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a pull rod system in a calibration device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a direction adjustment mechanism in the calibration device according to the embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement of the purposes and the effects of the present invention easy to understand, the following embodiments specifically describe the calibration device provided by the present invention with reference to the accompanying drawings.
In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the 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 a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1-2, there is provided a center load calibration device for a thrust measuring rack with adjustable direction, the device includes a fixed rack I, a movable rack II disposed on the fixed rack I through a spring piece X, a simulated engine III fixed above the movable rack II, a standard force loading mechanism for applying a standard force to the simulated engine III, a pull rod system IV for transmitting the standard force applied by the standard force loading mechanism to the simulated engine III, a working force measuring sensor IX for measuring the force transmitted by the movable rack, and a standard force measuring sensor V disposed in the middle of the pull rod system IV for measuring the standard force applied by the standard force loading mechanism, wherein the standard force applied by the simulated engine is a tensile force, the standard force loading mechanism is disposed in front of the simulated engine III, and the pull rod system IV is connected with the tail of the simulated engine III through the simulated engine III.
In some embodiments, the standard force loading mechanism comprises a fixed mounting plate VIII for fixing, a hydraulic loading cylinder VII provided on the fixed mounting plate VIII for adjusting the standard force, and a direction adjustment device VI.
In some embodiments, the direction adjusting device VI is a tubular structure 8, the hydraulic loading cylinder VII is disposed in the tubular structure 8, the hydraulic loading cylinder VII is disposed coaxially with the tubular structure 8, the pull rod system IV passes through the tubular structure 8 to be connected with the hydraulic loading cylinder VII, and a plurality of direction adjusting screws for adjusting the direction of the pull rod system IV are disposed on the tubular structure 8.
In some embodiments, the plurality of direction adjustment screws includes 4 adjustment screws disposed at 90 ° intervals, wherein the four screws are divided into an upper adjustment screw 9, a lower adjustment screw 10, a right adjustment screw 11, and a left adjustment screw 12.
In some embodiments, the four adjusting screws are respectively arranged on two different cross sections of the cylindrical structure, the distance between the two different cross sections is not smaller than the diameter of the adjusting screws, and the adjusting screws on the same cross section are 180 degrees apart.
In some embodiments, a ball head 1 is arranged at the end of a first rigid rod connected with the simulation engine III, a ball socket matched with the ball head 1 is arranged on the simulation engine III, the standard force measuring sensor V is arranged on a second rigid rod, two levels 5 respectively arranged at two sides of the standard force measuring sensor V are arranged on the second rigid rod, two ball bearings 3 respectively arranged at the outer sides of the two levels 5 and used for connecting a plumb 4 are arranged on the second rigid rod, and the adjusting screw is arranged around the third rigid rod.
In some embodiments, a flexible rod 2 is disposed between the first rigid rod, the second rigid rod and the third rigid rod, and the third rigid rod is connected to the hydraulic loading cylinder VII through the flexible rod 2.
In some embodiments, the cylindrical structure is connected to the fixed mounting plate VIII by a flange 7.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (2)
1. The device is characterized by comprising a fixed frame, a movable frame arranged on the fixed frame through a spring piece, a simulation engine fixed above the movable frame, a standard force loading mechanism for applying standard force to the simulation engine, a pull rod system for transmitting the standard force applied by the standard force loading mechanism to the simulation engine, a working force measuring sensor for measuring force transmitted by the movable frame, and a standard force measuring sensor arranged in the middle of the pull rod system and used for measuring the standard force applied by the standard force loading mechanism, wherein the standard force applied by the simulation engine is tension, the standard force loading mechanism is arranged in front of the simulation engine, the pull rod system penetrates through the simulation engine and is connected with the tail part of the simulation engine,
the standard force loading mechanism comprises a fixed mounting plate used for fixing, a hydraulic loading cylinder arranged on the fixed mounting plate and used for adjusting the standard force and a direction adjusting device,
the direction adjusting device is a tubular structure, the hydraulic loading cylinder is arranged in the tubular structure, the hydraulic loading cylinder and the tubular structure are coaxially arranged, the pull rod system passes through the tubular structure to be connected with the hydraulic loading cylinder, a plurality of direction adjusting screws for adjusting the direction of the pull rod system are arranged on the tubular structure,
the plurality of direction adjustment screws comprises 4 adjustment screws arranged at 90 deg. intervals,
the four adjusting screws are respectively arranged on two different cross sections of the cylindrical structure, the distance between the two different cross sections is not smaller than the diameter of the adjusting screw, the adjusting screws on the same cross section are spaced by 180 degrees,
the end part of the first rigid rod connected with the simulation engine is provided with a ball head, the simulation engine is provided with a ball socket matched with the ball head, the standard force measuring sensor is arranged on the second rigid rod, the second rigid rod is provided with two levels respectively arranged at two sides of the standard force measuring sensor, the second rigid rod is provided with two ball bearings respectively arranged at the outer sides of the two levels and used for connecting a plumb, the adjusting screw is arranged around the third rigid rod,
and flexible rods are arranged among the first rigid rod, the second rigid rod and the third rigid rod, and the third rigid rod is connected with the hydraulic loading cylinder through the flexible rods.
2. The adjustable direction thrust measurement bench center load calibration device of claim 1, wherein the cylindrical structure is flanged to the stationary mounting plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111222180.4A CN114136624B (en) | 2021-10-20 | 2021-10-20 | Direction-adjustable thrust measurement rack center loading calibration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111222180.4A CN114136624B (en) | 2021-10-20 | 2021-10-20 | Direction-adjustable thrust measurement rack center loading calibration device |
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| CN114136624A CN114136624A (en) | 2022-03-04 |
| CN114136624B true CN114136624B (en) | 2023-06-13 |
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| CN115371882B (en) * | 2022-10-24 | 2023-03-24 | 中国航发四川燃气涡轮研究院 | Calibration mechanism for torque measuring device of high-power/high-rotating-speed transmission system |
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| RU2117272C1 (en) * | 1996-06-14 | 1998-08-10 | Акционерное общество открытого типа "Гипронииавиапром" | Testing unit for jet engine |
| CN103471768B (en) * | 2013-10-14 | 2015-06-10 | 哈尔滨工业大学 | Multifunctional calibrating and loading device for torque multiplier |
| RU165648U1 (en) * | 2016-05-31 | 2016-10-27 | Акционерное общество "Научно-производственный центр газотурбостроения "Салют" (АО "НПЦ газотурбостроения "Салют") | TEST FOR TURBO-SCREW ENGINES TEST |
| CN107238457B (en) * | 2017-06-28 | 2019-11-15 | 北京航空航天大学 | A kind of low thrust measuring device |
| CN108168774B (en) * | 2017-12-27 | 2020-01-14 | 中国航发四川燃气涡轮研究院 | Space vector force calibration method |
| CN108562376A (en) * | 2017-12-28 | 2018-09-21 | 中国航发四川燃气涡轮研究院 | A kind of biphase gas and liquid flow gas phase temperature measuring device based on centrifugal separation method |
| EP3647759B1 (en) * | 2018-11-02 | 2022-11-02 | Rolls-Royce plc | Calibrating an engine core |
| CN109269718B (en) * | 2018-11-23 | 2020-12-29 | 北京航天试验技术研究所 | Stepless regulation engine vector thrust calibration device |
| CN111366368A (en) * | 2020-03-13 | 2020-07-03 | 青岛航空技术研究院(中国科学院工程热物理研究所青岛研究中心) | Automatic thrust loading and calibrating system for aircraft engine test bed and automatic control method |
| CN112378561B (en) * | 2020-11-25 | 2022-04-12 | 西安航天动力试验技术研究所 | Integrated equipment and method for attitude control engine thrust measurement and in-situ calibration |
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| CN105486451A (en) * | 2015-12-15 | 2016-04-13 | 中国燃气涡轮研究院 | Six-freedom parallel control self-correction return apparatus for space vector force loading |
| CN107202660A (en) * | 2017-06-06 | 2017-09-26 | 西安航天动力试验技术研究所 | 4 25N attitude control engine thermal vacuum environment stable state thrust calibration measurement apparatus |
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