CN106525394A - Multi-rotor system vibration characteristic experiment device included in spring base - Google Patents
Multi-rotor system vibration characteristic experiment device included in spring base Download PDFInfo
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- CN106525394A CN106525394A CN201610848101.3A CN201610848101A CN106525394A CN 106525394 A CN106525394 A CN 106525394A CN 201610848101 A CN201610848101 A CN 201610848101A CN 106525394 A CN106525394 A CN 106525394A
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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
- G01M13/00—Testing of machine parts
Abstract
The present invention provides a multi-rotor system vibration characteristic experiment device included in a spring base. The device comprises a multi-rotor bearing system for simulating a steam turbine, the bearing pedestal of the sliding bearing of the multi-rotor bearing system is directly arranged on the spring base, the multi-rotor bearing system is connected with a driving device, and a lubricating oil system supplies oil for the work of the sliding bearing; the multi-rotor bearing system is internally provided with a photoelectric sensor for shaft system rotation speed measurement, and the bearing pedestal is provided with a speed sensor for vibration measurement and a thermocouple for bearing bush temperature measurement; and an oil inlet pressure measurement meter is arranged at the oil inlet pipe of the lubricating oil system, and a dual-metal temperature meter is arranged at an oil return pipe; and each measurement signal is transmitted to a monitoring console. The multi-rotor system vibration characteristic experiment device included in the spring base can be configured to explore the problems of the coupling vibration relation of the rotors, the bearing and the basic system and the vibration transmission relation between the bearing pedestal and the spring basic structure under the dynamic disturbance force of the shaft system high-speed rotation, and provides a reference basis for the large-scale object set shaft system and the basic vibration characteristic matching design and type selecting.
Description
Technical field
The present invention relates to a kind of rotor dynamics experimental provision, more particularly to a kind of many rotors for counting spring foundation
Shafting vibration characteristic experimental apparatus.
Background technology
Shafting vibration characteristic concerns the safe and reliable operation of Turbo-generator Set, basis propping up as rotor-bearing system
The impact of support part part, the critical speed of its shaft and vibratory response is more and more paid attention to.Nuclear power half speed unit in order to
Basic natural frequency is made to avoid the operating frequency of 25Hz, typically from spring vibration-isolated foundation.Double reheat fired power generating unit due to
Shafting is longer, and shafting becomes soft, and the minimum critical speed of shafting is decreased, in order that the low order master mode frequency on basis is as far as possible remote
The main critical frequency and operating frequency of off-axis system, also has the example from spring foundation.As spring foundation is in nuclear power Half Speed
Application on unit and double reheat fired power generating unit, counting the research of the multi-rotors system vibration characteristics of spring foundation, have very much must
Will.
At present with regard to counting the multi-rotors system Analysis of Vibration Characteristic experimental study of spring foundation, it is external it is rare in this respect
Document report, it is domestic at unit design apolegamy basis and shafting characteristics design more adopt method for simplifying, will spring foundation with
Bearing spider is equivalent to single support stiffness by imported technology value, supports border, not yet shape as shafting vibration specificity analysises
Into ripe calculation model for design and the theory and designing technique system of specification, and due to the large scale computer supported using spring foundation
Group domestic application example is less, and basis in kind is limited with unit installation installation procedure and test condition, at the scene actual measurement side
Face also lacks enough data informations to instruct and amendment design technology.To it is new develop needed for large sized unit count bullet
The designing techniques such as the dynamic trait of multi-rotors system that spring basis affects need a set of checking and perfect assay device.
It is therefore desirable to according to dynamic trait principle of similarity and geometric similarity ratio, building based on large-scale unit diminution in kind
Enter the multi-rotors system vibration characteristics experimental provision of spring foundation support, so as to for more comprehensively grasping shafting under spring foundation
Vibration characteristics, the vibration compatibility design offer verification experimental verification foundation for effectively applying both spring foundation, optimization.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of multi-rotors system vibration characteristics experiment for counting spring foundation
Device, it is therefore intended that explore under the coupled vibrations relation of rotor, bearing and basic system, and the dynamic power of disturbing of shafting high speed rotation
Bearing block and spring foundation it is interstructural vibration transitive relation the problems such as, using from experiment obtain multi-rotors system vibration characteristics
Data, provide reference frame for large-scale shaft system of unit in kind with basic vibration characteristics matched design and type selecting.
In order to solve above-mentioned technical problem, a kind of many armature spindles for counting spring foundation of offer are the technical scheme is that
It is vibration characteristics experimental provision, it is characterised in that：Including for simulate large capacity turbine rotating part set many rotor bearing systems
System, the bearing block of each sliding bearing for supporting rotor are directly mounted on spring foundation top platen, many rotor-bearing systems and drive
Dynamic device flexible connection, sliding bearing work by lubricating oil system fuel feeding；
Shafting tachometric survey photoelectric sensor is provided with many rotor-bearing systems, and bearing block is provided with vibration measurement speed
Degree sensor, bearing bush temperature measurement thermocouple；Input pressure meter is provided with the oil inlet pipe of lubricating oil system, at oil return pipe
It is provided with bimetallic thermometer；Each measurement signal is delivered to supervisory console.
Preferably, the driving means are provided by power machine room and pass through in power, power machine room ac motor and direct current
Alternating current power supply is converted to DC source and is exported to driving means by electromotor.
Preferably, the driving means include that direct current generator and step-up gear, direct current generator and step-up gear pass through
Flexible coupling connects, and connects with driving means base respectively, on the basis of driving means base is by being fixed on driving means；
Driving means foundation bottom surrounding arranges vibration isolation medium, keeps interval between vibration isolation medium and spring foundation.
Preferably, many rotor-bearing systems are by the simulation steam turbine multi-rotors system, simulation electromotor being sequentially connected
Rotor and the little axle composition of simulation excitation；
Simulation steam turbine multi-rotors system includes many roots rotors, and the first roots rotor is via the flexible shaft coupling with trip gear
Device is connected with the step-up gear, by the connection of monobloc forging formula positive coupling, last roots rotor and simulation between adjacent rotor
Generator amature connects.
Preferably, the spring foundation mainly includes simulation Turbine Engine Foundation top platen, simulates Turbine Engine Foundation top platen
On column, column is provided with spring vibration-isolator between simulation Turbine Engine Foundation top platen and column on base plate；The axle
Bearing is on simulation Turbine Engine Foundation top platen.
Preferably, the spring vibration-isolator top and bottom be respectively arranged with vertically and horizontally both direction for examining or check
The vibration measurement piezoelectric velocity sensor of the vibration isolating effect of spring vibration-isolator.
Preferably, the vibration of bearings measurement pressure of vertically and horizontally both direction is provided with the bearing block split
Electric-type velocity sensor, the bearing block rotor portion arrange the axle of vertically and horizontally both direction and shake measurement current vortex displacement
Sensor.
Preferably, the lubricating oil system includes the monoblock type lubricating oil system in lubricating oil room, monoblock type lubrication
Oil system connection oil-feed main pipe, oil return main pipe, emergency oil tank is via three-way valve and monoblock type lubricating oil system, oil-feed main pipe phase
Even, standby oil scavenge pump is at oil return main pipe.
Preferably, the monoblock type oil system includes being sequentially connected scavenge oil pump, oil cooler, main fuel tank, oil feed pump, filter
Net, heater, scavenge oil pump connect the oil return main pipe, and heater connects the oil-feed main pipe.
Preferably, the parameter of the supervisory console monitoring includes that the rotating speed of many rotor-bearing systems, each sliding bearing enter
Tubing pressure and oil return pipe temperature, each bearing bush temperature, watt shake value, axle shake value, and protection is reported to the police includes vibration exceeding the standard warning, watt Wen Chao
Mark warning, the exceeded warning of oil temperature, low oil pressure are reported to the police, and the equipment of control includes direct current generator, oil feed pump, heater, standby oil suction
Pump and scavenge oil pump.
Compared with prior art, the invention has the advantages that：
1st, the dynamic trait experiment of the multi-rotors system of spring foundation impact is counted, rotor bearing oil film dynamic characteristic shadow is counted
Loud spring foundation platen dynamic trait experiment, can effectively explore the coupled vibrations relation of rotor, bearing and spring foundation system,
For shaft system of unit in kind and spring foundation design apolegamy reference；
2nd, vibration test under various working can be carried out, each position rotor, bearing and basic spring vibration-isolator is studied
Upper and lower vibration transmission effect, obtains the experimental test result that unit in kind cannot be carried out, is corrected theoretical calculation model；
3rd, by different work condition state condition experiments, the power for obtaining multi-rotors system and spring foundation top platen can be tested
Attribute testing data, it is special on the power of the new multi-rotors system for counting spring foundation impact developed needed for large sized unit
The designing techniques such as property are verified and perfect；
4th, using effective measures exclude 50Hz electromagnetic interference and driving means vibration effect etc. it is unfavorable to experiment test because
Element；
5th, various alternative means are taken, such as emergency oil tank and accident oil scavenge pump etc., the safety of experimental provision is further ensured that
Reliability.
Description of the drawings
Fig. 1 is the multi-rotors system vibration characteristics experimental provision schematic diagram that the present invention counts spring foundation；In figure：1 is profit
Lubricating oil room (mainly includes 1-1 oil feed pumps, 1-2 filter screens, 1-3 heaters, 1-4 scavenge oil pumps and 1-5 oil coolers, 1-6 main fuel tanks), 2
For emergency oil tank, 3 is three-way valve, and 4 is oil-feed main pipe, and 5 is oil return main pipe, and 6 is standby oil scavenge pump, and 7 is power machine room, and 8 is straight
Stream motor, 9 is step-up gear, and 10 is driving means base, and 11 is driving means basis；12 is vibration isolation medium, and 13 are flexibility
Shaft coupling, 14 is the flexible coupling with trip gear, and 15 is that (15-1 represents the 1st to simulation steam turbine multi-rotors system, 15-N
Represent nth root, N generally 2～5), 16 are simulation generator amature, and 17 are the little axle of simulation excitation, and 18 is monobloc forging formula rigidity shaft coupling
Device, 19 is sliding bearing (number is relevant with rotor radical and supporting form), and 20 is bearing block (number is relevant with bearing number),
21 be spring foundation (mainly include 21-1 top platen crossbeams, 21-2 top platen longerons, 21-3 spring vibration-isolators, 21-4 columns and
21-5 base plates etc.), 22 is manual pressure regulating valve, and 23 is supervisory console；A is bearing bush temperature measurement thermocouple, and B shakes for bearing block
Dynamic measurement piezoelectric velocity sensor, C shake measurement eddy current displacement sensor for axle, and D is that the vibration measurement of spring top is used
Velocity sensor, E be spring bottom vibration measurement velocity sensor, F be shafting tachometric survey photoelectric sensor, G be into
Oil pressure meter, H are oil return pipe metallic thermometer, and wherein, A, B, C, G, H are relevant with bearing number, and D, E and column radical have
Close, and B, C, D, E point is vertically and horizontally both direction；
Fig. 2 is embodiment of the present invention unit simulation multi-rotors system in kind, bearing and basic system schematic diagram.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can be made various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
A kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation, mainly includes power machine room, drives dress
Put, the device such as lubricating oil system, many rotor-bearing systems, bearing block and spring foundation support system and supervisory console.
Pass through ac motor and DC generator in the power machine room 7, alternating current power supply is converted to into DC source defeated
Go out to driving means, electromagnetic interference of the dynamical system to test system can be prevented effectively from.
The driving means are made up of direct current generator 8 and step-up gear 9, and both are connected by flexible coupling 13, and point
Not Tong Guo fastening bolt and driving means base 10 connect, driving means base 10 is fixed on driving means basis by embedded iron
On (i.e. concrete buttress) 11, direct current generator 8 can control start and stop and without stabilizer pole speed change by supervisory console.Driving means basis
11 bottom surrounding arrangement vibration isolation media 12, and certain intervals are kept with spring foundation base plate, with the vibration of isolation drive part.
By steam turbine multi-rotors system 15 is simulated, (quantity is N roots to many rotor-bearing systems, N generally 2～5), mould
Send out rotor 16 and the little axle of simulation excitation 17 is constituted.In simulation steam turbine multi-rotors system 15, the 1st roots rotor is de- via band
The flexible coupling 14 of buckle device is connected with step-up gear 9, is connected by monobloc forging formula positive coupling 18 between adjacent rotor, connection
Axle device part and rotor carry out monobloc forging formula processing；Dual-gripper or single support shape of the simulation steam turbine multi-rotors system 15 according to setting
Formula selects the sliding bearing 19 of respective amount, the bearing block 20 of sliding bearing to be directly installed on spring foundation 21.
The spring foundation 21 is main to include simulation Turbine Engine Foundation top platen (including top platen crossbeam 21-1, top platen
Longeron 21-2), spring vibration-isolator 21-3, the part such as column 21-4 and base plate 21-5, top platen crossbeam 21-1 and column 21-4 it
Between connected by spring vibration-isolator 21-3.
The bearing block 20, is arranged at each bearing block split via fastening bolt on top platen crossbeam 21-1
There is the vibration of bearings measurement piezoelectric velocity sensor B of vertically and horizontally both direction, rotor portions set up separately at each bearing block
The axle for putting vertically and horizontally both direction shakes measurement eddy current displacement sensor C.
The spring vibration-isolator 21-3 top and bottom are respectively arranged with the vibration measurement of vertically and horizontally both direction and use
Piezoelectric velocity sensor D, for examining or check the vibration isolating effect of spring vibration-isolator.
The nearly gear-box end of 1st roots rotor is provided with shafting tachometric survey photoelectric sensor F, and bearing block 20 has vibration
Velocity sensor E is used in measurement, and bearing shell has temperature measuring thermocouple A, and tach signal, vibration signal and temperature signal are delivered to
Supervisory console 23.
Described each sliding bearing 19 works by lubricating oil system fuel feeding, at oil inlet pipe arrange input pressure meter G and
Manual pressure regulating valve 22, arranges bimetallic thermometer H at oil return pipe, arrange bearing bush temperature measurement and use thermocouple A at bearing shell.
The lubricating oil system include monoblock type lubricating oil system in lubricating oil room 1, oil-feed main pipe 4, oil return main pipe 5,
Emergency oil tank 2 and standby oil scavenge pump 6 etc..Standby oil scavenge pump 6 is located at nearly assay device oil return main pipe 5.
In the lubricating oil room, monoblock type oil system mainly includes oil feed pump 1-1, filter screen 1-2, heater 1-3, scavenge oil pump
1-4, oil cooler 1-5, main fuel tank 1-6 etc., scavenge oil pump 1-4, oil cooler 1-5, main fuel tank 1-6, oil feed pump 1-1, filter screen 1-2, plus
Hot device 1-3 is sequentially connected, scavenge oil pump 1-4 connection oil returns main pipe 5, heater 1-3 connection oil-feeds main pipe 4.
The emergency oil tank 2 is connected with heater 1-3, oil-feed main pipe 4 via three-way valve 3, and generally greater than oil-feed main pipe 4 is marked
High more than 2 meters placements, when under accident condition, experimental provision is out of service, lubricating oil room fuel cut-off or it is low for oil pressure when, thing
Therefore fuel tank 2 can open 3 passage of three-way valve by action of gravity, to maintain shafting to reach the fuel feeding of resting state process.
The major parameter of the monitoring of the supervisory console 23 includes multi-rotors system rotating speed, each sliding bearing oil-feed pipe pressure
And oil return pipe temperature, each bearing bush temperature, watt shake value, axle shake value etc., protection report to the police mainly include vibration exceeding the standard report to the police, watt temperature it is exceeded
Warning, the exceeded warning of oil temperature, low oil pressure are reported to the police etc., the equipment of control mainly include direct current generator, oil feed pump, oil heater,
Standby oil scavenge pump and scavenge oil pump etc..
Illustrated with a specific embodiment below.
It is overall that according to geometric similarity, when rotor local, according to dynamic trait principle of similarity, is built large-scale by million and half by certain
Fast material object unit reduces 10 times of the multi-rotors system vibration characteristics experimental provision for counting spring foundation support, mainly including power
Machine room, driving means, lubricating oil system, many rotor-bearing systems, bearing block and spring foundation support system and supervisory console
In device.
Pass through ac motor and DC generator in power machine room, alternating current power supply is converted to into DC source and is exported to drive
Dynamic device, can be prevented effectively from electromagnetic interference of the dynamical system to test system.Driving means are by direct current generator and speedup tooth
Roller box is constituted, and by roller bearings, both are connected by flexible coupling, and passes through fastening bolt and base connection, bottom respectively
Seat is fixed on concrete buttress by embedded iron.Test rotor design maximum speed reaches 15000rpm, and direct current generator can be by supervising
Start and stop are controlled and without stabilizer pole speed change depending on control station.Driving means concrete buttress bottom surrounding arrangement vibration isolation medium, and with bullet
Spring sole plate keeps certain intervals, with the vibration of isolation drive part.
As shown in Fig. 2 the multi-rotors system is made up of 5 roots rotors, overall length is nearly 6 meters, respectively the high pressure of object simulating unit
Rotor (HP), low pressure rotor I (LPI), low pressure rotor II (LPII), generator amature (GEN) and exciter rotor (EXC), its
In, each rotor in steam turbine part is by constituting with the wheel disc of rotor scale smaller in kind, but in view of the requirement of processing technique is (between impeller
Distance can not be too little), therefore one can be merged into by rotor intervals too small part level multistage according to the practical structures of each rotor
Level.Master section rotor has then ensured dynamic similarity using special modeling method.Additionally, high pressure rotor Jing flexible couplings
It is connected with step-up gear, can simulates and rise to the free down speeding procedure of inertia after certain rotating speed is threaded off, is provided with shafting herein and turns
Fast measurement photoelectric sensor, uses for control and monitor console.
It is bolted by positive coupling between rotor, coupling segment and rotor carry out monobloc forging formula processing.Rotor
Material adopts 45 steel, and gross weight is nearly 1 ton, and rotor dynamic balancing required precision reaches more than G1.0, is faced with ensureing that rotor can be crossed safely
Boundary's rotating speed simultaneously runs well under design speed.
In addition to exciter rotor, remaining rotor adopts dual-gripper form, and shafting is altogether using 9 sliding bearings (tilting bush)
Support, diameter technique scheme there are 3 kinds of specifications, size range is 40～85mm.Each sliding bearing work is supplied by lubricating oil system
Oil, lubricating system are connected with the oilhole of plain bearing housing by pipeline, provide certain pressure, flow and temperature for bearing
Lubricating oil.Input pressure meter and manual pressure regulating valve are set at oil inlet pipe, bimetallic thermometer is set at oil return pipe, at bearing shell
Bearing bush temperature measurement thermocouple is set.
On the basis of sliding bearing bearing block is directly installed on, bearing block is arranged on basic crossbeam via fastening bolt,
The vibration of bearings measurement piezoelectric velocity sensor of vertically and horizontally both direction is provided with each bearing block split, respectively
At bearing block, rotor portion arranges the axle of vertically and horizontally both direction and shakes measurement eddy current displacement sensor.
Generally 7 × 2 × 3 meters of spring foundation length, width and height, mainly including top platen, spring vibration-isolator, basic stand column and bottom
The parts such as plate, are connected by spring vibration-isolator between foundation sole plate crossbeam and column.Spring vibration-isolator top and bottom are respectively provided with
There is the vibration measurement piezoelectric velocity sensor of vertically and horizontally both direction, can be used to examine or check the vibration isolation effect of spring vibration-isolator
Really.
Oil system include monoblock type lubricating oil system in lubricating oil room, oil-feed main pipe, oil return main pipe, emergency oil tank and
Standby oil scavenge pump etc..Wherein：
1) in lubricating oil room, monoblock type oil system mainly includes main fuel tank, oil feed pump, filter screen, heater, scavenge oil pump and cold
Oily device etc., main fuel tank are pressed the circulation oil mass of 8min and are designed, and should be able to accommodate the oil mass of emergency oil tank (also known as top petrol tank), substantially
Capacity is 7m3；
2) emergency oil tank is connected with lubricating oil room, oil-feed main pipe via three-way valve, higher than more than 2 meters peaces of oil-feed main pipe absolute altitude
Put, when under accident condition, experimental provision is out of service, lubricating oil room fuel cut-off or it is low for oil pressure when, emergency oil tank can be relied on
Threeway valve passage is opened in action of gravity, to maintain shafting to reach the fuel feeding of resting state process；
3) petrol station outlet oil temperature continuously adjustabe in the range of 40～65 DEG C.Outlet oil pressure is set up by direct-operated regulator,
Scope is 1.0～3.0bar.
The major parameter of supervisory console monitoring includes testing rotor speed, each sliding bearing oil-feed pipe pressure and oil return pipe
Temperature, each bearing bush temperature, watt shake value, axle shake value etc., and protection being reported to the police vibration exceeding the standard warning, the exceeded warning of watt temperature, the oil of mainly include
The exceeded warning of temperature, low oil pressure warning etc., the equipment of control mainly include direct current generator, oil feed pump, oil heater, accident oil suction
Pump and scavenge oil pump etc..
Laboratory table shafting oil inlet valve, top petrol tank, the oil pump for starting petrol station and auxiliary equipment is opened, makes bearing enter oil pressure
Design load is reached, starts the laboratory table DC power-supply systems such as power machine room electromotor, starting dc motor on control station makes
Shafting gets into smooth, and shows shafting rotating speed, the gentle oil pressure of bearing oil, axle journal and bear vibration by the collection of operating board monitoring computer
It is etc. parameter, synchronous to divide in the arrangement measuring point such as bearing block, spring foundation crossbeam and longeron, base roof plate and column and in vibration-testing
Analysis system carries out test record, realizes the operating and functional effect of this experimental provision.
Claims (10)
1. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation, it is characterised in that：Including for simulating vapour
Many rotor-bearing systems of turbine rotating part set, the bearing block of each sliding bearing for supporting rotor are directly mounted at spring foundation top
On platen, many rotor-bearing systems and driving means flexible connection, sliding bearing work by lubricating oil system fuel feeding；
Shafting tachometric survey photoelectric sensor (F) is provided with many rotor-bearing systems, and bearing block (20) is provided with vibration measurement
With velocity sensor (E), bearing bush temperature measurement thermocouple (A)；Input pressure measurement is provided with the oil inlet pipe of lubricating oil system
Meter (G), is provided with bimetallic thermometer (H) at oil return pipe；Each measurement signal is delivered to supervisory console (23).
2. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation as claimed in claim 1, its feature exist
In：The driving means are provided by power machine room (7) and pass through in power, power machine room (7) ac motor and DC generator,
Alternating current power supply is converted to DC source to export to driving means.
3. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation as claimed in claim 1, its feature exist
In：The driving means include that direct current generator (8) and step-up gear (9), direct current generator (8) and step-up gear (9) pass through
Flexible coupling (13) connects, and connects with driving means base (10) respectively, and driving means base (10) is by being fixed on drive
On dynamic device basic (11)；Driving means basis (11) bottom surrounding arrangement vibration isolation medium (12), vibration isolation medium (12) and spring
Interval is kept between basic (21).
4. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation as claimed in claim 3, its feature exist
In：Many rotor-bearing systems are by simulation steam turbine multi-rotors system (15), simulation generator amature (16) being sequentially connected
And simulation excitation little axle (17) composition；
Simulation steam turbine multi-rotors system (15) includes many roots rotors, and the first roots rotor is via the flexible shaft coupling with trip gear
Device (14) is connected with the step-up gear (9), is connected by monobloc forging formula positive coupling (18), last root between adjacent rotor
Rotor is connected with simulation generator amature (16).
5. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation as claimed in claim 1, its feature exist
In：Spring foundation (21) mainly include simulation Turbine Engine Foundation top platen, and simulation Turbine Engine Foundation top platen is located at column
(21-4), on, column (21-4) is provided between simulation Turbine Engine Foundation top platen and column (21-4) on base plate (21-5)
Spring vibration-isolator (21-3)；Described bearing block (20) are on simulation Turbine Engine Foundation top platen.
6. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation as claimed in claim 5, its feature exist
In：Spring vibration-isolator (21-3) top and bottom be respectively arranged with vertically and horizontally both direction for examine or check spring every
Shake device vibration isolating effect vibration measurement with piezoelectric velocity sensor (D).
7. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation as claimed in claim 1, its feature exist
In：The vibration of bearings measurement piezoelectric velocity of vertically and horizontally both direction is provided with bearing block (20) split
Sensor (B), bearing block (20) rotor portion arrange the axle of vertically and horizontally both direction and shake measurement current vortex displacement
Sensor (C).
8. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation as claimed in claim 3, its feature exist
In：The lubricating oil system includes the monoblock type lubricating oil system in lubricating oil room (1), the connection of monoblock type lubricating oil system
Oil-feed main pipe (4), oil return main pipe (5), emergency oil tank (2) is via three-way valve (3) and monoblock type lubricating oil system, oil-feed main pipe
(4) it is connected, standby oil scavenge pump (6) are located at oil return main pipe (5) place.
9. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation as claimed in claim 8, its feature exist
In：Scavenge oil pump (1-4) that the monoblock type oil system includes being sequentially connected, oil cooler (1-5), main fuel tank (1-6), oil feed pump
(1-1), filter screen (1-2), heater (1-3), scavenge oil pump (1-4) connect oil return main pipe (5), heater (1-3) connection institute
State oil-feed main pipe (4).
10. a kind of multi-rotors system vibration characteristics experimental provision for counting spring foundation as claimed in claim 9, its feature exist
In：The parameter that supervisory console (23) monitor includes the rotating speed of many rotor-bearing systems, each sliding bearing (19) oil inlet pipe
Pressure and oil return pipe temperature, each bearing bush temperature, watt shake value, axle shake value, and protection is reported to the police includes vibration exceeding the standard warning, the exceeded report of watt temperature
Police, the exceeded warning of oil temperature, low oil pressure are reported to the police, the equipment of control include direct current generator (8), oil feed pump (1-1), heater (1-3),
Standby oil scavenge pump (6) and scavenge oil pump (1-4).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271194A (en) * | 2017-06-14 | 2017-10-20 | 华电电力科学研究院 | Gas turbine blower vibration test platform |
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