CN208887927U - Pneumatic birotor-casing multi-function test stand - Google Patents

Pneumatic birotor-casing multi-function test stand Download PDF

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Publication number
CN208887927U
CN208887927U CN201821607277.0U CN201821607277U CN208887927U CN 208887927 U CN208887927 U CN 208887927U CN 201821607277 U CN201821607277 U CN 201821607277U CN 208887927 U CN208887927 U CN 208887927U
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CN
China
Prior art keywords
casing
pressure rotor
rotor
support base
pipeline
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Withdrawn - After Issue
Application number
CN201821607277.0U
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Chinese (zh)
Inventor
曹树谦
麻岳敏
李利青
侯兰兰
高天
黄凯
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Tianjin University
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Tianjin University
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Publication date
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Priority to CN201821607277.0U priority Critical patent/CN208887927U/en
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Publication of CN208887927U publication Critical patent/CN208887927U/en
Withdrawn - After Issue legal-status Critical Current
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Abstract

The utility model discloses a kind of birotor-casing multi-function test stands, including rotor experiment table and pneumatic device;Rotor experiment table includes casing and the high and low pressure rotor that is arranged in casing;Low pressure rotor is divided into two parts composition, is coupled among two parts using set gear coupling, low pressure rotor is equipped with blade-carrying low-pressure turbine disk and high pressure rotor;Intershaft bearing is equipped between low pressure rotor and high pressure rotor, high pressure rotor is equipped with blade-carrying high-pressure turbine disk, and the wall of casing, which is equipped with, touches the device through-hole that rubs for installing.Pneumatic device includes a micro-air compressor and air accumulator, and the export pipeline of air accumulator is connected with a stream splitter, and stream splitter is divided into the pipeline for controlling revolving speed including two and two control the pipeline for touching advance and retreat of rubbing.It can be achieved a variety of boat hair I ' Ub orrOtOt-box systemS malfunction tests and axis and disk multiple spot touch casing vibration analysis, casing multi-measuring point signal processing and analysis etc. under rubbing.

Description

Pneumatic birotor-casing multi-function test stand
Technical field
The utility model relates to aero-engine technology field more particularly to a kind of pneumatic actuations for scientific experiment Birotor multi-function test stand containing casing.
Background technique
Currently, the rotor testbed of most of colleges and universities does not include casing, only simple research rotor characteristics, directly go to measure The vibration signal of rotor has ignored many influence factors, and rotor is driven by motor.In reality, aero-engine It is gas-powered, and structure is complicated, should not dismantles, analyzes and determines rotor-support-foundation system by removing the vibration signal of acquisition casing The case where.
Aero-engine complete machine oscillation is always pith very important in engine research, development design, and the research is As a special project.The detection of aero-engine complete machine oscillation is to install biography at the support case of bearing installation side Sensor, the vibration of casing directly reflect the level of vibration of engine complete machine.The vibration of engine interior can be transmitted to casing, and pass Passing path has a plurality of, this just needs to analyze vibration transfer path, and carries out vibratory response point to target point each on casing Analysis.
Utility model content
Signal transmitting in the case of rotor experiment table existing in the prior art cannot consider the problems of to have casing, this Utility model provides a kind of pneumatic birotor-casing testing stand.The utility model can realize a variety of boat hair I ' Ub orrOtOt-box systemSs events Barrier experiment, such as shaft, disk are touched and are rubbed, the failures such as bearing defect, spot corrosion, abrasion, shaft coupling failure, Shaft misalignment, bearing pine Failures and the axis such as dynamic and disk multiple spot touch casing vibration analysis, casing multi-measuring point signal processing and analysis under rubbing etc..
In order to solve the above-mentioned technical problem, the utility model proposes a kind of pneumatic birotor-casing multi-function test stand, Including rotor experiment table and pneumatic device;The rotor experiment table includes casing and the high pressure rotor being arranged in casing and low pressure Rotor;The casing is made of support base and coaxial cylinder;One end of the casing is equipped with the first support base, the casing The other end is equipped with the second support base, and the centre of the casing is equipped with middle bearing bracket and squeeze film damper supporter, the A dismountable cylinder, the second support base and squeeze film damper supporter are equipped between one support base and middle bearing bracket Between be equipped with dismountable three coaxial cylinders;First support base, the second support base and squeeze film damper support It is equipped with mouse cage elastic bearing in vivo, is equipped with and squeezes between the squeeze film damper supporter and mouse cage elastic bearing therein Press film damper and damping ring;The both ends of the low pressure rotor are by second support base and the squeeze film damper branch Support body support, the low pressure rotor are divided into two parts composition, are coupled among two parts using set gear coupling, and tight by bolt Gu;It is successively arranged on the low pressure rotor, from second support base to the squeeze film damper supporter with blade Low-pressure turbine disk and high pressure rotor;Intershaft bearing is equipped between the low pressure rotor and the high pressure rotor, the high pressure turns Son is equipped with blade-carrying high-pressure turbine disk, and the set gear coupling is inlaid in the middle bearing bracket;The casing Wall is equipped with multiple through-holes, touches the device that rubs at least provided with two by through-hole on casing, the device that rubs that touches is by pneumatically filling Set driving;The pneumatic device includes a micro-air compressor and the gas storage being connected with the micro-air compressor Tank, the export pipeline of the air accumulator are connected with the main air inlet pipe road entrance of stream splitter by gas conduit, the air-flow There are two the outlets of rotary cylinder supply air line and two to touch the cylinder supply air line outlet that rubs for current divider tool, and the stream splitter will The gas distribution of entrance is four tunnels, and in four pipelines, the control including two by rotary cylinder supply air line outlet connection turns The pipeline to rub is touched in the pipeline of speed and two controls that connection is exported by touching the cylinder supply air line that rubs;The pipeline of two control revolving speeds On be respectively connected with speed control valve, the other end of the speed control valve controls blade-carrying low pressure by gas piping respectively The turbine disk and blade-carrying high-pressure turbine disk adjust the size of the pipeline air-flow of control revolving speed by speed control valve, to The rotation of blade-carrying low-pressure turbine disk and blade-carrying high-pressure turbine disk is driven, so that low pressure rotor and high pressure be driven to turn Son operation;And the rotational speed difference of low pressure rotor and high pressure rotor is controlled by the pressure size of change air-flow;Two controls are touched and are rubbed Pipeline on be all connected to two and touch the device that rubs, two controls, which are touched the pipeline to rub and are equipped with, touches the control button of retreating that rubs, by touching Rub retreat control button control touch the device that rubs, to realize that high pressure rotor and touching for low pressure rotor rub.
In the utility model, the casing is equipped with vibrating sensor.
Two positions for touching the device that rubs are corresponding with the position of the low pressure rotor and high pressure rotor respectively, and solid by screw It is scheduled on the casing.
First support base and the second support base are bolted on a pedestal.
Compared with prior art, the utility model has the following advantages that and effect:
(1) casing is added under dual rotors system, studies transmission path;
(2) gas-driven turbine mode is used, stepless time adjustment, flexible operation is high-efficient;
(3) intershaft bearing and squeeze film damper are added in rotor-support-foundation system;
(4) experiment purpose of multiple functions may be implemented.
Detailed description of the invention
The pneumatic birotor of Fig. 1-casing multi-function test stand work structuring figure;
The pneumatic birotor of Fig. 2-casing multi-function test stand rotor-stator box structure half-sectional view schematic diagram pneumatic device Figure;
The pneumatic birotor of Fig. 3-casing multi-function test stand gas diverter;
In figure: 1- micro-air compressor, 2- air accumulator, 3- stream splitter, 4- touch the control button of retreating that rubs, 5- revolving speed Control valve, the blade-carrying low-pressure turbine disk of 6-, the blade-carrying high-pressure turbine disk of 7-, 8- high pressure rotor, 9- low pressure rotor, 10- casing, 12- touch the device that rubs, 13- gas conduit, 14- middle bearing bracket, 15- squeeze film damper supporter, 16- Two support bases, 17- mouse cage elastic bearing, 18- intershaft bearing, 19- squeeze film damper and damping ring, 20- tooth cover shaft coupling, 21- bearing, the first support base of 22-, 23- main air inlet pipe road entrance, the outlet of 24- rotary cylinder supply air line, 25- touch the cylinder that rubs Supply air line outlet.
Specific embodiment
Technical solutions of the utility model are described in further detail in the following with reference to the drawings and specific embodiments, it is described Specific embodiment is only explained the utility model, is not intended to limit the utility model.
The utility model proposes a kind of pneumatic birotor-casing multi-function test stand include rotor experiment table and pneumatic dress It sets.
As shown in Fig. 2, the rotor experiment table includes that casing 10 and the high pressure rotor 8 being arranged in casing 10 and low pressure turn Son 9;One end of the casing 10 is equipped with the first support base 22, and the other end of the casing 10 is equipped with the second support base 16, described The centre of casing 10 is equipped with middle bearing bracket 14 and squeeze film damper supporter 15, in the first support base 22 and intermediate bearing It is equipped with a dismountable cylinder between seat 14, is equipped between the second support base 16 and squeeze film damper supporter 15 removable The three coaxial cylinders unloaded;First support base 22 and the second support base 16 are bolted on a pedestal.Institute It states in the first support base 22, the second support base 16 and squeeze film damper supporter 15 and is equipped with mouse cage elastic bearing 17, institute It states and is equipped with squeeze film damper and damping ring between squeeze film damper supporter 15 and mouse cage elastic bearing 17 therein 19;The both ends of the low pressure rotor 9 are supported by second support base 22 and the squeeze film damper supporter 15, described Low pressure rotor 9 divides to be formed for two parts, is coupled among two parts using set gear coupling 20, and be fastened by bolts;It is described low It is successively arranged on pressure rotor 9, from second support base 22 to the squeeze film damper supporter 15 blade-carrying low Press the turbine disk 6 and high pressure rotor 8;Intershaft bearing 18, the high pressure are equipped between the low pressure rotor 9 and the high pressure rotor 8 Rotor 8 is equipped with blade-carrying high-pressure turbine disk 7, and the set gear coupling 20 is inlaid in the middle bearing bracket 14.
As shown in figures 1 and 3, the wall of the casing 10 is equipped with multiple through-holes, is at least set on casing 10 by through-hole There are two the device 12 that rubs is touched, the device 12 that rubs that touches is driven by pneumatic device.Two positions for touching the device 12 that rubs respectively with institute The position for stating low pressure rotor 9 and high pressure rotor 8 is corresponding, and is fixed by screws on the casing 10.
The pneumatic device includes a micro-air compressor 1, in order to guarantee the adequacy of gas, in miniature air pressure An air accumulator 2, the export pipeline of the air accumulator 2 and the main air inlet pipe road entrance 23 of stream splitter 3 are added outside contracting machine 1 It is connected by gas conduit, there are two rotary cylinder supply air line outlets 24 and two to touch the cylinder that rubs for the tool of stream splitter 3 Supply air line outlet 25, the gas distribution of entrance is four tunnels by the stream splitter 3, in four pipelines, including two processes Rotary cylinder supply air line exports the pipeline of the control revolving speed of 24 connections and two connect by touching the cylinder supply air line outlet 25 that rubs The pipeline to rub is touched in the control connect;It is respectively connected with speed control valve 5 on the pipeline of two control revolving speeds, the speed control valve 5 The other end controls blade-carrying low-pressure turbine disk 6 and blade-carrying high-pressure turbine disk 7 by gas piping respectively, by turning Fast control valve 5 adjusts the size of the pipeline air-flow of control revolving speed, to drive blade-carrying low-pressure turbine disk 6 and with blade High-pressure turbine disk 7 rotation, so that low pressure rotor 9 and high pressure rotor 8 be driven to run;And the pressure size by changing air-flow To control the rotational speed difference of low pressure rotor 9 and high pressure rotor 8;Two controls touch on the pipeline to rub and are all connected to two and touch the device that rubs 12, two controls are touched the pipeline to rub and are equipped with and touch the control button 4 of retreating that rubs, and touch the dress that rubs by touching the control of control button 4 of retreating of rubbing 12 are set, to realize that high pressure rotor 8 and touching for low pressure rotor 9 rub.
When being tested using the utility model, 1 power supply of micro-air compressor is opened by its start-up operation, by air pressure Contracting deposits gas to air accumulator 2, guarantees that gas is sufficient, and gas enters gas diverter 3 by conduit, and gas is respectively from touching the cylinder that rubs Supply air line outlet 25,24 outflow of rotary cylinder supply air line outlet, export 24 eluting gas point from rotary cylinder supply air line Not Jin Ru blade-carrying low-pressure turbine disk 6 and blade-carrying high-pressure turbine disk 7, drive them to rotate, then from touching the gas that rubs 25 outflow of cylinder supply air line outlet, which enters, touches the device that rubs, and touches and rubs by touching the realization of control button 4 of retreating of rubbing.In two rotary cylinders It is equipped with baroswitch on the pipeline that supply air line outlet 24 connects out, is turned by control pressure with this to control high-low pressure The variation of rotor speed.
In some embodiments, Main Shaft Bearing of Engine breaks down, such as loosens, misaligns, and fault-signal is by multiple Miscellaneous path is transferred to casing, and the sensor by being mounted on casing collects mixed signal, to collected vibration signal into A series of noise reduction process of row, fault-signal at separation.
In some embodiments, the coupling component shaft coupling in low pressure rotor breaks down, and fault-signal is by complexity Path is transferred to casing, and the sensor by being mounted on casing collects mixed signal, carries out one to collected vibration signal Serial noise reduction process, fault-signal at separation.
In some embodiments, to one timing of HP&LP Rotor revolving speed, the control button 4 of retreating that rubs is touched by manually controlling, It allows its system to touch to rub, analysis, which is touched, to rub a little to the transmission path information of casing measuring point, and different touching position of rubbing will have difference Transfer characteristic information, therefrom extract each feature for touching position of rubbing.
In some embodiments, under different rotating speeds, mouse cage elastic bearing and squeeze film damper are to system stability It influences.
In some embodiments, due to the coupling of intershaft bearing in dual rotors system, the revolving speed of inner and outer rotors can be mutual Mutually influence, meanwhile, the critical speed of the revolving speed Compare System of inner and outer rotors also has an impact.
In some embodiments, imbalance fault occurs for dual rotors system, while identifying two rotor unbalance failures Phase and amount of unbalance.
Although the utility model is described above in conjunction with attached drawing, the utility model is not limited to above-mentioned Specific embodiment, the above mentioned embodiment is only schematical, rather than restrictive, the ordinary skill of this field Personnel are under the enlightenment of the utility model, in the case where not departing from the utility model aims, can also make many variations, this It belongs within the protection of the utility model a bit.

Claims (4)

1. a kind of pneumatic birotor-casing multi-function test stand, it is characterised in that: including rotor experiment table and pneumatic device;
The rotor experiment table includes the high pressure rotor (8) and low pressure rotor (9) of casing (10), setting in casing (10);Institute Casing (10) is stated to be made of support base and coaxial cylinder;One end of the casing (10) is equipped with the first support base (22), described The other end of casing (10) is equipped with the second support base (16), and the centre of the casing (10) is equipped with middle bearing bracket (14) and squeezes Film damper supporter (15) is equipped with a dismountable circle between the first support base (22) and middle bearing bracket (14) Cylinder is equipped with dismountable three coaxial cylinders between the second support base (16) and squeeze film damper supporter (15);Institute It states in the first support base (22), the second support base (16) and squeeze film damper supporter (15) and is equipped with mouse cage elastic bearing (17), squeeze film is equipped between the squeeze film damper supporter (15) and mouse cage elastic bearing therein (17) to damp Device and damping ring (19);The both ends of the low pressure rotor (9) are by second support base (22) and the squeeze film damper Supporter (15) support, the low pressure rotor (9) are divided into two parts composition, set gear coupling (20) connection are used among two parts Knot, and be fastened by bolts;On the low pressure rotor (9), from second support base (22) to the squeeze film damper Supporter (15) is successively arranged blade-carrying low-pressure turbine disk (6) and high pressure rotor (8);The low pressure rotor (9) with it is described Intershaft bearing (18) are equipped between high pressure rotor (8), the high pressure rotor (8) is equipped with blade-carrying high-pressure turbine disk (7), The set gear coupling (20) is inlaid in the middle bearing bracket (14);
The wall of the casing (10) is equipped with multiple through-holes, touches the device that rubs at least provided with two by through-hole on casing (10) (12), the device that rubs that touches is driven by pneumatic device;
The pneumatic device includes that a micro-air compressor (1) and one are connected with the micro-air compressor (1) Air accumulator (2), the export pipeline of the air accumulator (2) and the main air inlet pipe road entrance (23) of stream splitter (3) pass through gas Conduit is connected, and there are two rotary cylinder supply air line outlets (24) and two to touch the cylinder gas supply that rubs for stream splitter (3) tool Tube outlet (25), the gas distribution of entrance is four tunnels by the stream splitter (3), in four pipelines, including two processes Rotary cylinder supply air line exports the pipeline of the control revolving speed of (24) connection and two export by touching the cylinder supply air line that rubs (25) pipeline to rub is touched in the control connected;
It is respectively connected with speed control valve (5) on the pipeline of two control revolving speeds, the other end of the speed control valve (5) passes through gas Body pipeline controls blade-carrying low-pressure turbine disk (6) and blade-carrying high-pressure turbine disk (7) respectively, passes through speed control valve (5) size for adjusting the pipeline air-flow of control revolving speed, to drive blade-carrying low-pressure turbine disk (6) and blade-carrying height The rotation of the turbine disk (7) is pressed, so that low pressure rotor (9) and high pressure rotor (8) be driven to run;And the pressure by changing air-flow is big The small rotational speed difference to control low pressure rotor (9) and high pressure rotor (8);
Two controls touch on the pipeline to rub and are all connected to two and touch the device that rubs (12), and two controls, which touch the pipeline to rub and are equipped with to touch, to rub Advance and retreat control button (4), by touch rub retreat control button (4) control touch the device that rubs (12), thus realize high pressure rotor (8) and Touching for low pressure rotor (9) rubs.
2. pneumatic birotor-casing multi-function test stand according to claim 1, it is characterised in that: on the casing (10) Equipped with vibrating sensor.
3. pneumatic birotor-casing multi-function test stand according to claim 1, it is characterised in that: two are touched the device that rubs (12) position is corresponding with the position of the low pressure rotor (9) and high pressure rotor (8) respectively, and is fixed by screws in the machine On casket (10).
4. pneumatic birotor-casing multi-function test stand according to claim 1, it is characterised in that: first support base (22) it is bolted on a pedestal with the second support base (16).
CN201821607277.0U 2018-09-29 2018-09-29 Pneumatic birotor-casing multi-function test stand Withdrawn - After Issue CN208887927U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821607277.0U CN208887927U (en) 2018-09-29 2018-09-29 Pneumatic birotor-casing multi-function test stand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821607277.0U CN208887927U (en) 2018-09-29 2018-09-29 Pneumatic birotor-casing multi-function test stand

Publications (1)

Publication Number Publication Date
CN208887927U true CN208887927U (en) 2019-05-21

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CN201821607277.0U Withdrawn - After Issue CN208887927U (en) 2018-09-29 2018-09-29 Pneumatic birotor-casing multi-function test stand

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109141893A (en) * 2018-09-29 2019-01-04 天津大学 Pneumatic birotor-casing multi-function test stand

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109141893A (en) * 2018-09-29 2019-01-04 天津大学 Pneumatic birotor-casing multi-function test stand
CN109141893B (en) * 2018-09-29 2020-03-13 天津大学 Pneumatic double-rotor-casing multifunctional test bed

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Granted publication date: 20190521

Effective date of abandoning: 20200313

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