CN105806623B - Turboshaft engine zero torsional moment test device and test method - Google Patents

Turboshaft engine zero torsional moment test device and test method Download PDF

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Publication number
CN105806623B
CN105806623B CN201610313315.0A CN201610313315A CN105806623B CN 105806623 B CN105806623 B CN 105806623B CN 201610313315 A CN201610313315 A CN 201610313315A CN 105806623 B CN105806623 B CN 105806623B
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engine
torque
dynamometer
zero
freewheel clutch
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CN105806623A (en
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贾宗芸
魏秀利
区庆培
张浙波
龙合良
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Hunan Aviation Powerplant Research Institute AECC
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China Aircraft Power Machinery Institute
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00Testing of engines
    • G01M15/02Details or accessories of testing apparatus

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Engines (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention discloses a kind of turboshaft engine zero torsional moment test device and test method, which includes:Dynamometer, the front end of dynamometer connect engine to be measured through freewheel clutch case, the load as engine;Freewheel clutch case controls the clutch of engine and dynamometer between engine and dynamometer and through it to realize zero torsional moment test of engine;Rear drive equipment connects the rear end of dynamometer, makes engine enter zero torque output state for the adjusting by revolving speed and torque and through dynamometer and freewheel clutch case.It is connected by setting rear drive equipment with dynamometer, and freewheel clutch case is set between dynamometer and engine to be measured, dynamometer is driven to be rotated with same hand engine rotation as power adjustment torque by rear drive equipment, so that the revolving speed of freewheel clutch case output end is higher than the revolving speed of input, freewheel clutch disengages, it is detached from engine and dynamometer, to realize zero torsional moment test of engine.

Description

Turboshaft engine zero torsional moment test device and test method
Technical field
The present invention relates to aero-engine fields, particularly, be related to a kind of zero torsional moment test device of turboshaft engine and Test method.
Background technique
Require engine defeated zero in regulation endurence test and the program of durable-modelling test run before turboshaft engine flies It is operated in the case where shaft torque (i.e. the torque of engine output shaft is zero), examination engine operates in this case Stability, reliability and safety.Existing turboshaft engine ground test stand starts without correlation test device carrying out whirlpool axis When providing endurence test and durable-modelling test run before machine flight, requires part to be reduced zero torsional moment test, therefore need to set Count a kind of zero torsional moment test device of turboshaft engine.
Summary of the invention
The present invention provides a kind of turboshaft engine zero torsional moment test devices and test method, to solve existing ground Test bay is unable to satisfy the technical issues of zero torsional moment test of turboshaft engine.
The technical solution adopted by the present invention is as follows:
According to an aspect of the present invention, a kind of turboshaft engine zero torsional moment test device, apparatus of the present invention packet are provided It includes:
The front end of dynamometer, dynamometer connects engine to be measured through freewheel clutch case, as the load of engine, uses In the output torque for measuring engine and absorb engine power;
Freewheel clutch case controls the clutch of engine and dynamometer between engine and dynamometer and through it with reality Zero torsional moment test of existing engine;
Rear drive equipment connects the rear end of dynamometer, and the steering of rear drive equipment is identical as engine, for passing through revolving speed And torque adjusting and through dynamometer and freewheel clutch case make engine enter zero torque output state.
Further, rear drive equipment includes:
Variable-frequency motor, as driving power source;
Gearbox connects the output end of variable-frequency motor and the rear end of dynamometer, so that the output revolving speed of rear drive equipment It is matched with the revolving speed of engine;
Torque sensor, for measuring the revolving speed of variable-frequency motor and/or torque and feeding back to automatic control system;
Automatic control system, for receive torque sensor feedback revolving speed and/or torque and the revolving speed being set and/or The given value of torque generates regulating command to frequency-changing control system by comparing given value and value of feedback;
Frequency-changing control system controls the revolving speed and/or torque of variable-frequency motor for receiving regulating command.
Further, automatic control system is locally located or receives through network the instruction of setting given value.
Further, dynamometer includes shell and the rotor being set in the housing, and one end of rotor connects freewheel clutch case Output end, the other end of rotor connects rear drive equipment, and shell is equipped with because the torsion of shell is to measure engine torque Tension-compression sensor.
Further, shell is equipped with the inlet valve and flowing water Valve communicated therewith, for controlling inlet valve and/or going out Water is in the aperture regulation shell of penstock to regulate and control engine loading.
Further, freewheel clutch case include cabinet and set on the intracorporal reduction gearing of case, speed increasing gear and surmount from Clutch, wherein reduction gearing is connect with input terminal, and speed increasing gear is connect with output end, freewheel clutch be located at reduction gearing with Between speed increasing gear, for controlling the clutch of reduction gearing and speed increasing gear, and freewheel clutch is higher than in the revolving speed of output end It is disengaged when the revolving speed of input terminal so that reduction gearing and speed increasing gear are detached from.
Further, freewheel clutch case further includes for being lubricated cooling lubricating system in cabinet.
According to another aspect of the present invention, a kind of zero torque test method of turboshaft engine is also provided, using above-mentioned whirlpool Shaft generator includes with zero torsional moment test device, the method for the present invention:
Starting engine to be measured, engine successively drives rear drive equipment work through freewheel clutch case, dynamometer, and Working speed is controlled by engine and is kept constant constant;
It is constant that engine loading is adjusted through dynamometer;
Starting rear drive equipment simultaneously gradually increases the output torque of rear drive equipment until the output torque of engine is close When zero, continue the output torque for increasing rear drive equipment, the revolving speed of dynamometer rises, is mounted between engine and dynamometer Freewheel clutch disengages, and engine enters zero torque output state.
Further, rear drive equipment has torque control mode, and through automatic control system under torque control mode Automatically increase its output torque until the torque targets value set.
Further, torque targets value drives dynamometer setting to load corresponding torque greater than engine under working speed Value.
The invention has the advantages that:
Turboshaft engine of the present invention zero torsional moment test device and test method pass through setting rear drive equipment and dynamometer It is connected, and freewheel clutch case is set between dynamometer and engine to be measured, by rear drive equipment as power adjustment Torque drives dynamometer to be rotated with same hand engine rotation, so that the revolving speed of freewheel clutch case output end is higher than input Revolving speed, freewheel clutch disengages, is detached from engine and dynamometer, to realize zero torsional moment test of engine, meets The test requirements document of endurence test and durable-modelling test run to zero output torque is carried out before turboshaft engine flight.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention. Below with reference to accompanying drawings, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is structural schematic diagram of the preferred embodiment of the present invention turboshaft engine with zero torsional moment test device;
Fig. 2 is the structural schematic diagram of preferred embodiment of the present invention rear drive equipment;
Fig. 3 is the structural schematic diagram of preferred embodiment of the present invention freewheel clutch case.
Description of symbols:
1, dynamometer;2, freewheel clutch case;3, rear drive equipment;4, engine;
21, cabinet;22, input terminal;23, output end;24, reduction gearing;
25, speed increasing gear;26, freewheel clutch;27, lubricating system;
31, variable-frequency motor;32, gearbox;33, torque sensor;34, automatic control system;35, frequency-changing control system.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig.1, the preferred embodiment of the present invention provides a kind of zero torsional moment test device of turboshaft engine, packet It includes:The front end of dynamometer 1, dynamometer 1 connects engine 4 to be measured through freewheel clutch case 2, as the load of engine 4, uses In the output torque for measuring engine 4 and absorb engine power;Freewheel clutch case 2, be located at engine 4 and dynamometer 1 it Between and through it control the clutch of engine 4 and dynamometer 1 to realize zero torsional moment test of engine 4;Rear drive equipment 3, connection The steering of the rear end of dynamometer 1, rear drive equipment 3 is identical as engine 4, for the adjusting by revolving speed and torque and through measurement of power Device 1 and freewheel clutch case 2 make engine 4 enter zero torque output state.In existing routine test bay, engine conduct Power is connected directly with dynamometer.The present embodiment by be arranged rear drive equipment 3 be connected with dynamometer 1, and dynamometer 1 and to Between the engine 4 of survey be arranged freewheel clutch case 2, by rear drive equipment 3 as power adjustment torque drive dynamometer 1 with Rotated with 4 direction of rotation of engine so that the revolving speed of 2 output end of freewheel clutch case be higher than input revolving speed, surmount from Clutch 26 disengages, and is detached from engine 4 and dynamometer 1, to realize 4 zero torsional moment test of engine, meets whirlpool axis and start The test requirements document of endurence test and durable-modelling test run to zero output torque is carried out before machine flight.
Referring to Fig. 2, in the present embodiment, rear drive equipment 3 includes:Variable-frequency motor 31, as driving power source;Gearbox 32, connect variable-frequency motor 31 output end and dynamometer 1 rear end, the output revolving speed for improving rear drive equipment 3 be allowed to The revolving speed of engine 4 matches;Torque sensor 33, for measuring the revolving speed of variable-frequency motor 31 and/or torque and feeding back to automatic Control system 34;Automatic control system 34, for receiving revolving speed and/or torque that torque sensor 33 is fed back and turn being set The given value of speed and/or torque generates regulating command to frequency-changing control system 35 by comparing given value and value of feedback;Frequency conversion control System 35 processed controls the revolving speed and/or torque of variable-frequency motor 31 for receiving regulating command.The present embodiment passes through automatic control System 34 acquires value of feedback and compares value of feedback and given value generation regulating command, does not stop to adjust and control through frequency-changing control system 35 Variable-frequency motor 31 processed, reaches revolving speed and/or torque and stablizes in given value, to realize the accurate of revolving speed and/or torque Control.In the present embodiment, it is preferable that automatic control system 34 is using programmable controller as core, using open network knot Structure, makes that the network information is transparent, is easy to extend.Network-control includes control net (Industrial Ethernet Industrial Ethernet) With facility network (Profibus-DP field bus control system), automatic control system 34 be locally located or through network receive setting to The instruction of definite value further promotes its intelligent level.Preferably, in the present embodiment, variable-frequency motor 31 selects Xiao Chi company moral The cage type asynchronous variable-frequency motor of state's plant produced, frequency-changing control system 35 can be compiled using ABB AB's latest generation ACS800 series Range controller PLC selects Siemens Company S7-300, and torque sensor 33 uses Germany's GIF product, may be implemented to speed, turns round The accurate control of square.In the present embodiment, rear drive equipment 3 has rotating speed control mode and torque control mode.When test, first root Rotating speed control mode or moment of torsion control mould are selected in the man-machine interface of industrial personal computer (i.e. automatic control system 34) according to content of the test Formula sets respective objects parameter, starts frequency-changing control system 35, automatic control system 34 is by comparing the given of revolving speed or torque The value of feedback of revolving speed or torque that value and torque sensor 33 measure sends instructions to frequency-changing control system 35 in real time, frequency control system System 35, which does not stop regulation and control variable-frequency motor 31, to be reached revolving speed or torque and stablizes in given value, to realize revolving speed or torque Accurate control.
In the present embodiment, dynamometer 1 includes shell and the rotor being set in the housing, and one end of rotor connects freewheel clutch The other end of the output end of case 2, rotor connects rear drive equipment 3.Load of the dynamometer 1 as engine is started for measuring Machine output torque simultaneously absorbs engine power, its working principle is that stirring water (loading) by rotor, increase coolant-temperature gage, sends out The mechanical energy of motivation output is converted into the thermal energy of water to achieve the purpose that absorb power.Shell be equipped with because shell torsion with Measure the tension-compression sensor of engine torque.Preferably, shell is equipped with the inlet valve and flowing water Valve communicated therewith, for passing through Inlet valve and/or flowing water Valve regulate and control engine loading.Preferably, dynamometer has position control, moment of torsion control and revolving speed Control model controls water by inlet valve and water discharging valve real-time linkage to reach accurate control engine loading Purpose.
Referring to Fig. 3, the present embodiment freewheel clutch case 2 includes cabinet 21 and the reduction gearing 24 in cabinet 21, increasing Fast gear 25 and freewheel clutch 26, wherein reduction gearing 24 is connect with input terminal 22, and speed increasing gear 25 and output end 23 connect It connects, freewheel clutch 26 is between reduction gearing 24 and speed increasing gear 25, for controlling reduction gearing 24 and speed increasing gear 25 Clutch, and freewheel clutch 26 output end 23 revolving speed be higher than input terminal 22 revolving speed when disengage so that reduction gearing 24 with Speed increasing gear 25 is detached from.Preferably, reduction gearing 24 and speed increasing gear 25 can use multi-stage gear, in the present embodiment, use Double reduction gearing and two-stage speed increasing gear, to meet the adjustment demand of transmission ratio;Preferably, freewheel clutch 26 and test pair As the clutch under installation state is identical, so that engine is in test closest to installation state.Preferably, freewheel clutch Case 2 further includes for being lubricated cooling lubricating system 27 in cabinet 21.
According to another aspect of the present invention, a kind of zero torque test method of turboshaft engine is also provided, which is characterized in that adopt With the zero torsional moment test device of turboshaft engine of above-described embodiment, the method for the present invention includes:
1), start engine 4 to be measured, engine 4 successively drives rear drive equipment through freewheel clutch case 2, dynamometer 1 3 steady operations, and working speed is controlled by engine 4 and is kept constant constant;
2), constant through the adjusting engine loading of dynamometer 1;Dynamometer 1 is controlled using valve location, and valve location keeps permanent It surely is that water is constant (load is constant);
3), start rear drive equipment 3 and gradually increase the output torque of rear drive equipment 3 until the output of engine 4 is turned round When square is close to zero, continue the output torque for increasing rear drive equipment 3, the revolving speed of dynamometer 1 rises, and is mounted on engine 4 and surveys Freewheel clutch 26 between function device 1 disengages, and engine 4 enters zero torque output state.
In the present embodiment, it is preferable that start rear drive equipment 3 and use torque control mode, drive and turn round after being slowly increased Square;Because rear-guard turn is to consistent with engine, and the corresponding engine loading of dynamometer 1 is constant, a part of the load at this time Power is provided by rear drive equipment 3, and engine is to keep the constant output power of revolving speed that will reduce, and 3 torque of rear drive equipment continues Being increased up is more than dynamometer setting load, and the rotor speed of dynamometer 1 rises, and constant engine speed NE is constant, surpasses at this time The revolving speed of the more output end 23 of clutch box 2 has been more than the revolving speed of input terminal 22, and freewheel clutch 26 separates, to make engine 4 and dynamometer 1 (load) disengage, engine 4 is in the minimum for maintaining itself and freewheel clutch to lean on input end gear revolving speed at this time It works under power, reaches theoretic zero torque output state.
Preferably, the present embodiment rear drive equipment 3 increases it through automatic control system 34 under torque control mode automatically Output torque until setting torque targets value, to improve the intelligent level of zero torsional moment test of engine.More preferably Ground, torque targets value are greater than engine 4 and drive the setting load of dynamometer 1 (i.e. constant engine load) corresponding under working speed Torque value, i.e., dynamometer 1 driven by rear drive equipment 3 and rotor speed be greater than input terminal 22 revolving speed, freewheel clutch 26 Separation, so that engine 4 and dynamometer disengage, engine 4 reaches theoretic zero torque output state.
The present invention has passed through verification experimental verification, engine during entering zero torque and exporting and exit the output of zero torque and The operation is stable in zero torque output state, each test parameter is without exception, meets regulation persistently examination before turboshaft engine flight The test requirements document of vehicle and durable-modelling test run to zero output axis torque.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (9)

1. a kind of zero torsional moment test device of turboshaft engine, which is characterized in that including:
The front end of dynamometer (1), the dynamometer (1) connects engine (4) to be measured through freewheel clutch case (2), as hair The load of motivation (4), for measuring the output torque of engine (4) and absorbing engine power;
Freewheel clutch case (2), between engine (4) and the dynamometer (1) and through its control engine (4) with it is described The clutch of dynamometer (1) is to realize zero torsional moment test of engine (4);
Rear drive equipment (3) connects the rear end of the dynamometer (1), the steering of the rear drive equipment (3) and the engine (4) identical, for the adjusting by revolving speed and torque and make institute through the dynamometer (1) and the freewheel clutch case (2) Engine (4) are stated into zero torque output state;
The freewheel clutch case (2) includes cabinet (21) and the reduction gearing (24) being set in the cabinet (21), speedup tooth Take turns (25) and freewheel clutch (26), wherein the reduction gearing (24) connect with input terminal (22), the speed increasing gear (25) Connect with output end (23), the freewheel clutch (26) be located at the reduction gearing (24) and the speed increasing gear (25) it Between, for controlling the clutch of the reduction gearing (24) Yu the speed increasing gear (25), and the freewheel clutch (26) is in institute It states when the revolving speed of output end (23) is higher than the revolving speed of the input terminal (22) and disengages so that the reduction gearing (24) and the increasing Fast gear (25) is detached from.
2. zero torsional moment test device of turboshaft engine according to claim 1, which is characterized in that
The rear drive equipment (3) includes:
Variable-frequency motor (31), as driving power source;
Gearbox (32) connects the output end of the variable-frequency motor (31) and the rear end of the dynamometer (1), so that after described The output revolving speed of driving device (3) is matched with the revolving speed of engine (4);
Torque sensor (33), for measure the variable-frequency motor (31) revolving speed and/or torque and feed back to automatic control system It unites (34);
Automatic control system (34), for receiving the revolving speed of the torque sensor (33) feedback and/or torque and being set The given value of revolving speed and/or torque generates regulating command by comparing given value and value of feedback and gives frequency-changing control system (35);
Frequency-changing control system (35) controls revolving speed and/or the torsion of the variable-frequency motor (31) for receiving the regulating command Square.
3. zero torsional moment test device of turboshaft engine according to claim 2, which is characterized in that
The automatic control system (34) is locally located or receives through network the instruction of setting given value.
4. zero torsional moment test device of turboshaft engine according to claim 1, which is characterized in that
The dynamometer (1) includes shell and the rotor being disposed in the housing, surmount described in one end connection of the rotor from The output end (23) of clutch case (2), the other end of the rotor connect the rear drive equipment (3), the shell be equipped with because The torsion of shell is to measure the tension-compression sensor of engine torque.
5. zero torsional moment test device of turboshaft engine according to claim 4, which is characterized in that
The shell is equipped with the inlet valve and flowing water Valve that communicate therewith, for control the inlet valve and/or it is described go out Water is in shell described in the aperture regulation of penstock to regulate and control engine loading.
6. zero torsional moment test device of turboshaft engine according to claim 1, which is characterized in that
The freewheel clutch case (2) further includes for being lubricated cooling lubricating system (27) to the cabinet (21) is interior.
7. a kind of zero torque test method of turboshaft engine, which is characterized in that using the whirlpool as described in claim 1 to 6 is any Zero torsional moment test device of shaft generator, the method includes:
Start engine to be measured (4), the engine (4) successively drives rear-guard through freewheel clutch case (2), dynamometer (1) Dynamic device (3) work, and working speed is controlled and is kept constant constant by the engine (4);
It is constant that engine loading is adjusted through the dynamometer (1);
Start the rear drive equipment (3) and gradually increases the output torque of the rear drive equipment (3) up to engine (4) When output torque is close to zero, continuing the output torque for increasing the rear drive equipment (3), the revolving speed of the dynamometer (1) rises, The freewheel clutch (26) being mounted between the engine (4) and the dynamometer (1) disengages, and the engine (4) enters Zero torque output state.
8. zero torque test method of turboshaft engine according to claim 7, which is characterized in that
The rear drive equipment (3) has torque control mode, and through automatic control system under the torque control mode (34) increase its output torque automatically until the torque targets value set.
9. zero torque test method of turboshaft engine according to claim 8, which is characterized in that
The torque targets value is greater than the engine (4) and dynamometer (1) setting load is driven to correspond under the working speed Torque value.
CN201610313315.0A 2016-05-12 2016-05-12 Turboshaft engine zero torsional moment test device and test method Active CN105806623B (en)

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CN112595517A (en) * 2020-11-12 2021-04-02 西安爱生技术集团公司 Unmanned aerial vehicle piston engine test bed frame with clutch and method

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