CN105806623A - Zero torque testing device and testing method for turboshaft engine - Google Patents
Zero torque testing device and testing method for turboshaft engine Download PDFInfo
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- CN105806623A CN105806623A CN201610313315.0A CN201610313315A CN105806623A CN 105806623 A CN105806623 A CN 105806623A CN 201610313315 A CN201610313315 A CN 201610313315A CN 105806623 A CN105806623 A CN 105806623A
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- torsion
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 230000001105 regulatory effect Effects 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000010998 test method Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
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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
Abstract
The invention discloses a zero torque testing device and testing method for a turboshaft engine.The testing device comprises a dynamometer, an overrunning clutch box and a back driving device; the front end of the dynamometer is connected with the engine to be tested through the overrunning clutch box to serve as a load of the engine; the overrunning clutch box is located between the engine and the dynamometer, and separation and closure of the engine and the dynamometer are controlled by the overrunning clutch box to achieve zero torque testing on the engine; the back driving device is connected with the back end of the dynamometer and used for enabling the engine to enter a zero torque output state by regulating the revolving speed and the torque through the dynamometer and the overrunning clutch box.The back driving device is arranged to be connected with the dynamometer, the overrunning clutch box is arranged between the dynamometer and the engine to be tested, the torque is regulated by taking the back driving device as power to drive the dynamometer to rotate in the same direction as the rotating direction of the engine to enable the revolving speed of the output end of the overrunning clutch box to be higher than that of the input end of the overrunning clutch box, an overrunning clutch is disengaged to enable the engine to be disengaged from the dynamometer, and then zero torque testing on the engine is achieved.
Description
Technical field
The present invention relates to aero-engine field, especially, relate to a kind of turboshaft engine zero torsional moment test device and test method.
Background technology
When the program of regulation endurence test and durable-modelling test run requiring that electromotor carries out operate (namely the moment of torsion of engine output shaft is zero) when zero output axle moment of torsion before turboshaft engine flies, examine stability, reliability and safety that electromotor operates in this case.Existing turboshaft engine ground test stand is without correlation test device, before carrying out turboshaft engine flight when regulation endurence test and durable-modelling test run, zero torsional moment test requirement part is reduced, therefore has needed a kind of turboshaft engine zero torsional moment test device of design badly.
Summary of the invention
The invention provides a kind of turboshaft engine zero torsional moment test device and test method, the technical problem of turboshaft engine zero torsional moment test cannot be met solving existing ground test stand.
The technical solution used in the present invention is as follows:
According to an aspect of the present invention, it is provided that a kind of turboshaft engine is with zero torsional moment test device, and apparatus of the present invention include:
Dynamometer, the front end of dynamometer connects electromotor to be measured through freewheel clutch case, as the load of electromotor, for measuring the output moment of torsion of electromotor and absorbing engine power；
Freewheel clutch case, controls the electromotor clutch with dynamometer to realize zero torsional moment test of electromotor between electromotor and dynamometer and through it；
Rear drive equipment, connects the rear end of dynamometer, and turning to of rear drive equipment is identical with electromotor, is used for by the adjustment of rotating speed and moment of torsion and makes electromotor enter zero moment of torsion output state through dynamometer and freewheel clutch case.
Further, rear drive equipment includes:
Frequency conversion motor, as driving power source；
Gearbox, connects the outfan of frequency conversion motor and the rear end of dynamometer, so that the output speed of rear drive equipment mates with the rotating speed of electromotor；
Torque sensor, is used for measuring the rotating speed of frequency conversion motor and/or moment of torsion and feeding back to automatic control system；
Automatic control system, the set-point of rotating speed and/or moment of torsion and configured rotating speed and/or moment of torsion for receiving torque sensor feedback, generate regulating command to frequency-changing control system by comparing set-point and value of feedback；
Frequency-changing control system, for receiving regulating command to control rotating speed and/or the moment of torsion of frequency conversion motor.
Further, automatic control system is locally located or receive through network and arrange the instruction of set-point.
Further, dynamometer includes housing and the rotor being located in housing, and one end of rotor connects the outfan of freewheel clutch case, and the other end of rotor connects rear drive equipment, and housing is provided with and reverses the tension-compression sensor to measure engine torque because of housing.
Further, housing is provided with the inlet valve and flowing water Valve that communicate therewith, for controlling in the aperture adjustment housings of inlet valve and/or flowing water Valve the water yield thus regulating and controlling engine loading.
Further, freewheel clutch case includes casing and the reduction gearing being located in casing, speed increasing gear and freewheel clutch, wherein, reduction gearing is connected with input, speed increasing gear is connected with outfan, freewheel clutch is between reduction gearing and speed increasing gear, and for controlling the clutch of reduction gearing and speed increasing gear, and freewheel clutch disengages when the rotating speed of outfan is higher than the rotating speed of input and reduction gearing is departed from speed increasing gear.
Further, freewheel clutch case also includes for the lubricating system being lubricated cooling in casing.
According to a further aspect in the invention, also providing for a kind of turboshaft engine zero torque test method, adopt above-mentioned turboshaft engine zero torsional moment test device, the inventive method includes:
Starting electromotor to be measured, electromotor drives rear drive equipment work through freewheel clutch case, dynamometer successively, and working speed by electromotor control and keeps invariable；
Engine loading is regulated constant through dynamometer；
Start rear drive equipment and be gradually increased the output moment of torsion of rear drive equipment until when the output moment of torsion of electromotor is close to zero, continue to increase the output moment of torsion of rear drive equipment, the rotating speed of dynamometer rises, being arranged on the freewheel clutch between electromotor and dynamometer to disengage, electromotor enters zero moment of torsion output state.
Further, rear drive equipment has a torque control mode, and automatically increases its output moment of torsion until the torque targets value that sets through automatic control system under torque control mode.
Further, torque targets value drives dynamometer to set the torque value that load is corresponding more than electromotor under working speed.
The method have the advantages that
Turboshaft engine of the present invention is by zero torsional moment test device and test method, it is connected with dynamometer by arranging rear drive equipment, and freewheel clutch case is set between dynamometer and electromotor to be measured, dynamometer is driven to rotate with same hand engine rotation by rear drive equipment as power adjustment moment of torsion, make the rotating speed rotating speed higher than input of freewheel clutch case outfan, freewheel clutch disengages, electromotor is made to depart from dynamometer, it is achieved thereby that electromotor zero torsional moment test, endurence test and the durable-modelling test run test requirements document to zero output moment of torsion is carried out before meeting turboshaft engine flight.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.Below with reference to accompanying drawings, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the preferred embodiment of the present invention turboshaft engine structural representation with zero torsional moment test device；
Fig. 2 is the structural representation of preferred embodiment of the present invention rear drive equipment；
Fig. 3 is the structural representation of preferred embodiment of the present invention freewheel clutch case.
Description of reference numerals:
1, dynamometer；2, freewheel clutch case；3, rear drive equipment；4, electromotor；
21, casing；22, input；23, outfan；24, reduction gearing；
25, speed increasing gear；26, freewheel clutch；27, lubricating system；
31, frequency conversion motor；32, gearbox；33, torque sensor；34, automatic control system；35, frequency-changing control system.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
With reference to Fig. 1, the preferred embodiments of the present invention provide a kind of turboshaft engine zero torsional moment test device, comprising: dynamometer 1, the front end of dynamometer 1 connects electromotor 4 to be measured through freewheel clutch case 2, as the load of electromotor 4, for measuring the output moment of torsion of electromotor 4 and absorbing engine power；Freewheel clutch case 2, controls the electromotor 4 clutch with dynamometer 1 to realize zero torsional moment test of electromotor 4 between electromotor 4 and dynamometer 1 and through it；Rear drive equipment 3, connects the rear end of dynamometer 1, and turning to of rear drive equipment 3 is identical with electromotor 4, is used for by the adjustment of rotating speed and moment of torsion and makes electromotor 4 enter zero moment of torsion output state through dynamometer 1 and freewheel clutch case 2.In existing conventional test bay, electromotor is joined directly together as power and dynamometer.The present embodiment is connected with dynamometer 1 by arranging rear drive equipment 3, and freewheel clutch case 2 is set between dynamometer 1 and electromotor 4 to be measured, dynamometer 1 is driven to rotate with same electromotor 4 direction of rotation by rear drive equipment 3 as power adjustment moment of torsion, make the rotating speed rotating speed higher than input of freewheel clutch case 2 outfan, freewheel clutch 26 disengages, electromotor 4 and dynamometer 1 is made to depart from, it is achieved thereby that electromotor 4 zero torsional moment test, before meeting turboshaft engine flight, carry out endurence test and the durable-modelling test run test requirements document to zero output moment of torsion.
With reference to Fig. 2, in the present embodiment, rear drive equipment 3 includes: frequency conversion motor 31, as driving power source；Gearbox 32, connects the outfan of frequency conversion motor 31 and the rear end of dynamometer 1, for improving the output speed of rear drive equipment 3 so as to mate with the rotating speed of electromotor 4；Torque sensor 33, is used for measuring the rotating speed of frequency conversion motor 31 and/or moment of torsion and feeding back to automatic control system 34；Automatic control system 34, the set-point of rotating speed and/or moment of torsion and configured rotating speed and/or moment of torsion for receiving torque sensor 33 feedback, generate regulating command to frequency-changing control system 35 by comparing set-point and value of feedback；Frequency-changing control system 35, for receiving regulating command to control rotating speed and/or the moment of torsion of frequency conversion motor 31.The present embodiment gathers value of feedback by automatic control system 34 and compares value of feedback and set-point generation regulating command, do not stop to regulate and control frequency conversion motor 31 through frequency-changing control system 35, rotating speed and/or moment of torsion is made to reach and stable at set-point, it is achieved thereby that the accurate control of rotating speed and/or moment of torsion.In the present embodiment, it is preferable that automatic control system 34, with Programmable Logic Controller for core, adopts open network structure, make that the network information is transparent, be prone to extension.Network control includes Controling network (IndustrialEthernet EPA) and facility network (Profibus-DP field bus control system), automatic control system 34 is locally located or receives the instruction arranging set-point through network, promotes its intelligent level further.Preferably, in the present embodiment, frequency conversion motor 31 selects the cage type asynchronous frequency conversion motor of Germany of Xiao Chi company plant produced, frequency-changing control system 35 adopts ABB AB latest generation ACS800 series, programmable controller PLC selects Siemens Company S7-300, torque sensor 33 adopts Germany's GIF product, it is possible to achieve the accurate control to speed, moment of torsion.In the present embodiment, rear drive equipment 3 has rotating speed control mode and torque control mode.During test, first in the man machine interface of industrial computer (i.e. automatic control system 34), select rotating speed control mode or torque control mode according to content of the test, set respective objects parameter, start frequency-changing control system 35, rotating speed or the value of feedback of moment of torsion that automatic control system 34 is measured by the set-point and torque sensor 33 comparing rotating speed or moment of torsion send instructions to frequency-changing control system 35 in real time, frequency-changing control system 35 does not stop to regulate and control frequency conversion motor 31 makes rotating speed or moment of torsion reach and stable at set-point, thus realizing the accurate control of rotating speed or moment of torsion.
In the present embodiment, dynamometer 1 includes housing and the rotor being located in housing, and one end of rotor connects the outfan of freewheel clutch case 2, and the other end of rotor connects rear drive equipment 3.Dynamometer 1 is as the load of electromotor, for measuring engine output torque and absorbing engine power, its operation principle is to stir water (i.e. load) by rotor, makes coolant-temperature gage increase, and the heat energy that changes mechanical energy is water of electromotor output is thus reaching the purpose of absorbed power.Housing is provided with and reverses tension-compression sensor to measure engine torque because of housing.Preferably, housing is provided with the inlet valve and flowing water Valve that communicate therewith, for regulating and controlling engine loading through inlet valve and/or flowing water Valve.Preferably, dynamometer has position control, moment of torsion controls and rotating speed control mode, by inlet valve and water discharging valve real-time linkage, controls the water yield thus reaching accurately to control the purpose of engine loading.
With reference to Fig. 3, the present embodiment freewheel clutch case 2 includes casing 21 and the reduction gearing 24 being located in casing 21, speed increasing gear 25 and freewheel clutch 26, wherein, reduction gearing 24 is connected with input 22, speed increasing gear 25 is connected with outfan 23, freewheel clutch 26 is between reduction gearing 24 and speed increasing gear 25, for controlling the clutch of reduction gearing 24 and speed increasing gear 25, and freewheel clutch 26 disengages when the rotating speed of outfan 23 is higher than the rotating speed of input 22 and reduction gearing 24 and speed increasing gear 25 is departed from.Preferably, reduction gearing 24 and speed increasing gear 25 can adopt multi-stage gear, in the present embodiment, adopt double reduction gearing and two-stage speed increasing gear, to meet the adjustment demand of gear ratio；Preferably, freewheel clutch 26 is identical with subjects clutch under installation state so that electromotor is at the trial closest to installation state.Preferably, freewheel clutch case 2 also includes for the lubricating system 27 being lubricated cooling in casing 21.
According to a further aspect in the invention, a kind of turboshaft engine zero torque test method is also provided for, it is characterised in that adopting the turboshaft engine zero torsional moment test device of above-described embodiment, the inventive method includes:
1), starting electromotor 4 to be measured, electromotor 4 drives rear drive equipment 3 steady operation through freewheel clutch case 2, dynamometer 1 successively, and working speed is controlled by electromotor 4 and keeps invariable；
2), engine loading is regulated through dynamometer 1 constant；Dynamometer 1 adopts valve location control, and valve location keeps the constant i.e. water yield constant (load is constant)；
3), start rear drive equipment 3 and be gradually increased the output moment of torsion of rear drive equipment 3 until when the output moment of torsion of electromotor 4 is close to zero, continue to increase the output moment of torsion of rear drive equipment 3, the rotating speed of dynamometer 1 rises, the freewheel clutch 26 being arranged between electromotor 4 and dynamometer 1 disengages, and electromotor 4 enters zero moment of torsion output state.
In the present embodiment, it is preferable that start rear drive equipment 3 and adopt torque control mode, being slowly increased rear drive moment of torsion；Because rear drive turns to consistent with electromotor, and the engine loading of dynamometer 1 correspondence is constant, a part of power of now this load is provided by rear drive equipment 3, electromotor will reduce for keeping the constant output of rotating speed, rear drive equipment 3 moment of torsion continues to be increased up exceeding dynamometer and sets load, the rotor speed of dynamometer 1 rises, and constant engine speed NE is constant, now the rotating speed of the outfan 23 of freewheel clutch case 2 has exceeded the rotating speed of input 22, freewheel clutch 26 separates, so that electromotor 4 and dynamometer 1 (load) disengage, now electromotor 4 works under maintaining self and the freewheel clutch minimum power by input end gear rotating speed, reach theoretic zero moment of torsion output state.
Preferably, the present embodiment rear drive equipment 3 under torque control mode through automatic control system 34 automatically increase its output moment of torsion until set torque targets value, thus improving the intelligent level of zero torsional moment test of electromotor.More preferably, torque targets value drives dynamometer 1 to set the torque value that load (i.e. constant engine load) is corresponding more than electromotor 4 under working speed, namely dynamometer 1 is driven by rear drive equipment 3 and rotor speed is more than the rotating speed of input 22, freewheel clutch 26 separates, electromotor 4 is disengaged with dynamometer, and electromotor 4 reaches theoretic zero moment of torsion output state.
The present invention has passed through verification experimental verification, electromotor is entering zero moment of torsion output and is exiting in zero moment of torsion output procedure and the working stability when zero moment of torsion output state, each test parameter is all without exception, meets the front regulation endurence test of turboshaft engine flight and the durable-modelling test run test requirements document to zero output axle moment of torsion.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. a turboshaft engine is with zero torsional moment test device, it is characterised in that including:
Dynamometer (1), the front end of described dynamometer (1) connects electromotor (4) to be measured through freewheel clutch case (2), as the load of electromotor (4), it is used for measuring the output moment of torsion of electromotor (4) and absorbing engine power；
Freewheel clutch case (2), is positioned between electromotor (4) and described dynamometer (1) and controls the electromotor (4) clutch with described dynamometer (1) to realize zero torsional moment test of electromotor (4) through it；
Rear drive equipment (3), connect the rear end of described dynamometer (1), turning to of described rear drive equipment (3) is identical with described electromotor (4), is used for by the adjustment of rotating speed and moment of torsion and makes described electromotor (4) enter zero moment of torsion output state through described dynamometer (1) and described freewheel clutch case (2).
2. turboshaft engine according to claim 1 is with zero torsional moment test device, it is characterised in that
Described rear drive equipment (3) including:
Frequency conversion motor (31), as driving power source；
Gearbox (32), connect the outfan of described frequency conversion motor (31) and the rear end of described dynamometer (1), so that the output speed of described rear drive equipment (3) mates with the rotating speed of electromotor (4)；
Torque sensor (33), is used for measuring the rotating speed of described frequency conversion motor (31) and/or moment of torsion and feeding back to automatic control system (34)；
Automatic control system (34), for receiving the set-point of rotating speed that described torque sensor (33) feeds back and/or moment of torsion and configured rotating speed and/or moment of torsion, generate regulating command to frequency-changing control system (35) by comparing set-point and value of feedback；
Frequency-changing control system (35), is used for the rotating speed and/or the moment of torsion that receive described regulating command to control described frequency conversion motor (31).
3. turboshaft engine according to claim 2 is with zero torsional moment test device, it is characterised in that
Described automatic control system (34) is locally located or receives the instruction arranging set-point through network.
4. turboshaft engine according to claim 1 is with zero torsional moment test device, it is characterised in that
Described dynamometer (1) includes housing and is located at the rotor in described housing, one end of described rotor connects the outfan (23) of described freewheel clutch case (2), the other end of described rotor connects described rear drive equipment (3), and described housing is provided with and reverses the tension-compression sensor to measure engine torque because of housing.
5. turboshaft engine according to claim 4 is with zero torsional moment test device, it is characterised in that
Described housing is provided with the inlet valve and flowing water Valve that communicate therewith, and the aperture for controlling described inlet valve and/or described flowing water Valve regulates in described housing the water yield thus regulating and controlling engine loading.
6. turboshaft engine according to claim 1 is with zero torsional moment test device, it is characterised in that
Described freewheel clutch case (2) includes casing (21) and the reduction gearing (24) being located in described casing (21), speed increasing gear (25) and freewheel clutch (26), wherein, described reduction gearing (24) is connected with input (22), described speed increasing gear (25) is connected with outfan (23), described freewheel clutch (26) is positioned between described reduction gearing (24) and described speed increasing gear (25), for controlling the clutch of described reduction gearing (24) and described speed increasing gear (25), and described freewheel clutch (26) disengages when the rotating speed of described outfan (23) is higher than the rotating speed of described input (22) and makes described reduction gearing (24) depart from described speed increasing gear (25).
7. turboshaft engine according to claim 6 is with zero torsional moment test device, it is characterised in that
Described freewheel clutch case (2) also includes for the lubricating system (27) being lubricated cooling in described casing (21).
8. turboshaft engine zero torque test method, it is characterised in that adopt as arbitrary in claim 1 to 7 as described in turboshaft engine zero torsional moment test device, described method includes:
Start electromotor (4) to be measured, described electromotor (4) drives rear drive equipment (3) work through freewheel clutch case (2), dynamometer (1) successively, and working speed is controlled by described electromotor (4) and keeps invariable；
Engine loading is regulated constant through described dynamometer (1)；
Start described rear drive equipment (3) and be gradually increased the output moment of torsion of described rear drive equipment (3) until when the output moment of torsion of electromotor (4) is close to zero, continue to increase the output moment of torsion of described rear drive equipment (3), the rotating speed of described dynamometer (1) rises, being arranged on the freewheel clutch (26) between described electromotor (4) and described dynamometer (1) to disengage, described electromotor (4) enters zero moment of torsion output state.
9. turboshaft engine zero torque test method according to claim 8, it is characterised in that
Described rear drive equipment (3) has a torque control mode, and automatically increases its output moment of torsion until the torque targets value that sets through automatic control system (34) under described torque control mode.
10. turboshaft engine zero torque test method according to claim 9, it is characterised in that
Described torque targets value drives dynamometer (1) to set the torque value that load is corresponding more than described electromotor (4) under described working speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610313315.0A CN105806623B (en) | 2016-05-12 | 2016-05-12 | Turboshaft engine zero torsional moment test device and test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610313315.0A CN105806623B (en) | 2016-05-12 | 2016-05-12 | Turboshaft engine zero torsional moment test device and test method |
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| CN105806623A true CN105806623A (en) | 2016-07-27 |
| CN105806623B CN105806623B (en) | 2018-11-20 |
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Cited By (2)
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| CN110320043A (en) * | 2019-06-28 | 2019-10-11 | 广西玉柴机器股份有限公司 | It is a kind of can rapid survey engine torque device and application method |
| 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 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632328B (en) * | 2019-01-21 | 2021-05-18 | 中国航发湖南动力机械研究所 | Turboshaft engine inspection test device, system and method |
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| Publication number | Publication date |
|---|---|
| CN105806623B (en) | 2018-11-20 |
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