CN109990987A - A kind of generator sealing bearing bush experimental rig and test method - Google Patents
A kind of generator sealing bearing bush experimental rig and test method Download PDFInfo
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- CN109990987A CN109990987A CN201711459521.3A CN201711459521A CN109990987A CN 109990987 A CN109990987 A CN 109990987A CN 201711459521 A CN201711459521 A CN 201711459521A CN 109990987 A CN109990987 A CN 109990987A
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- 238000007789 sealing Methods 0.000 title claims abstract description 72
- 238000010998 test method Methods 0.000 title claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000446 fuel Substances 0.000 claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000000523 sample Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 21
- 239000002828 fuel tank Substances 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 4
- 230000001934 delay Effects 0.000 claims 1
- 238000004088 simulation Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 112
- 239000007789 gas Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000003032 molecular docking Methods 0.000 description 3
- 241000233855 Orchidaceae Species 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000035882 stress Effects 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
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Fuel Cell (AREA)
Abstract
The invention belongs to generator of nuclear power station technical fields, and in particular to a kind of generator sealing bearing bush experimental rig and test method；A kind of normal operating condition for making the sealing bearing bush tested reach simulation Turbo-generator Set is provided, and then gap, sealing oil pressure, flow and the temperature of studying assessment sealing bearing bush and axis influence a kind of generator sealing bearing bush experimental rig and test method to sealing bearing bush operating status；Including testing host (1), temperature sensor (2), speed probe (3), vibrating sensor (4), flow sensor (5), leakproof fuel cell (6), electric heater (7), gs-oil separator (8), frequency conversion oil pump (9), valve (10), pressure sensor (11), water cooler (12), mechanical filter (13), magnetic filter (14), buffer oil tank (15), air compressor (16), air accumulator (17), air reducing valve (18), air cleaner (19) and air dryer (20).
Description
Technical field
The invention belongs to generator of nuclear power station technical fields, and in particular to a kind of generator sealing bearing bush experimental rig and examination
Proved recipe method.
Background technique
The hydrogen inside hydrogen cooled generator is along the gap leakage between generator both ends casing and rotor in order to prevent,
It is respectively mounted sealing bearing bush device at generator both ends, the hydrogen come in sealed electric generator by the high pressure sealing oil of flowing leaks.
Such sealing bearing bush maintenance is complicated, and mounting process requires height, and the sealing bearing bush of this kind of pattern is in unit red switch or operation
It is easy to the problem of deforming in the process, field gulf nuclear power station once repeatedly appeared in unit running process because sealing bearing bush deforms
The defect for causing sealing bearing bush temperature high seriously threatens the safe and stable operation of unit.
The reason of sealing bearing bush deforms is more complicated, may for machining stress does not discharge and in the process of running gradually
It discharges and causes to deform, it is also possible to which blank natrual ageing is not enough during sealing bearing bush processing and manufacturing or heat treatment process exists
Be short of and cause to deform, no matter which kind of reason, require sealing bearing bush run a period of time after can just deform, therefore
In maintenance process, the state of sealing bearing bush in the process of running can not be determined.
Moreover, in the sealing bearing bush installation standard that the Russian side provides being formulated under Russian local environmental weather conditions
, since weather, the temperature difference of China and Russia are larger, when being installed according to the standard that the Russian side provides to sealing bearing bush,
Sealing oil system often will appear some conflicting problems, such as increases sealing bearing bush internal diameter and corresponding axle journal difference, can drop
Low watt of temperature, but may result in the decline of Seal Oil fuel feeding main-piping pressure, even lower than run-limiting, on the contrary, then may cause watt
Temperature increases.
Therefore, the installation for such sealing bearing bush at present mainly carries out sealing bearing bush by experienced maintenance personal
Maintenance and installation, even if in this way, still will appear due to mounting process or sealing bearing bush deformation the problem of, lead to sealing bearing bush watt temperature
The phenomenon that the defects of height, leakage hydrogen.
Summary of the invention
The object of the present invention is to which in view of the shortcomings of the prior art, providing a kind of makes the sealing bearing bush tested reach simulation steamer
The normal operating condition of generating set, and then study gap, sealing oil pressure, flow and the temperature pair of assessment sealing bearing bush and axis
Sealing bearing bush operating status influences a kind of generator sealing bearing bush experimental rig and test method.
The technical scheme is that
A kind of generator sealing bearing bush experimental rig, including test host 1, temperature sensor 2, speed probe 3, vibration
Sensor 4, flow sensor 5, leakproof fuel cell 6, electric heater 7, gs-oil separator 8, frequency conversion oil pump 9, valve 10, pressure pass
Sensor 11, water cooler 12, mechanical filter 13, magnetic filter 14, buffer oil tank 15, air compressor 16, air accumulator 17, sky
Gas pressure reducing valve 18, air cleaner 19 and air dryer 20；It wherein tests and is provided with ten measured holes on host 1 for installing
Temperature sensor 2, speed probe 3, vibrating sensor 4, test host 1 are attached by bolt and leakproof fuel cell 6；It is close
Oil sealing case 6 is pyramid fuel tank, volume 10m3, tank bottoms are square, and are bolted on ground base within 4 weeks
On, fuel tank top is connect with test host 1, and electric heater 7 is placed in inside leakproof fuel cell 6, and electric heater 7 is high-intensitive stick
Electrical heating elements, preferably eight to 12 groups of quantity；Gs-oil separator 8 is by flanged joint in test host 1 and leakproof fuel cell 6
Between；9 entrance of frequency conversion oil pump is connected by flange and the outlet of 6 bottom oil circuit of leakproof fuel cell, and the outlet of frequency conversion oil pump 9 passes through flange
It is connect with valve 10,10 other end of valve is attached by the oil pipe line entrance of flange and water cooler 12, pressure sensor
11, temperature sensor 2 is threadedly attached on the pipeline among valve 10 and water cooler 12；12 oil pipe way outlet of water cooler
It is connect by flange with mechanical filter 13, valve 10 is separately mounted to the inlet and outlet of 12 water lines of water cooler by flange, uses
In the discharge of control cooling water, and then control the temperature of Seal Oil；Temperature sensor 2 is fixed on water cooler 12 and mechanical filter
On the pipeline that device 13 connects；The inlet and outlet of mechanical filter 13 are connect by flange with valve 10, two 13 Hes of mechanical filter
It is connect by flange with water cooler 12 and magnetic filter 14 after 10 parallel connection of valve；14 entrance of magnetic filter passes through pipeline and valve
Accessed in leakproof fuel cell 6 after 10 connections, pressure sensor 11 be connected through a screw thread be separately mounted to the front of mechanical filter 12 and
On the subsequent pipeline of magnetic filter 13；15 bottom of buffer oil tank is provided with the inlet and outlet of oil circuit, and top is provided with stomata, buffering
15 oil circuit import of fuel tank is connect by flange with the outlet of magnetic filter 14, and outlet is connect by flange with test host 1, is pushed up
The stomata in portion is connect by flange with air accumulator 17；Temperature sensor 2, flow sensor 5, pressure sensor 11 are installed on slow
It rushes 15 oil pipe way outlet of fuel tank and tests on the pipeline among host 1；The outlet of air compressor 16 passes through method with 10 entrance of valve
Orchid connection, the outlet of valve 10 successively connect with air reducing valve 18, air cleaner 19, air dryer 20,17 entrance of air accumulator
It connects, the outlet of air accumulator 17 is connect by underwater flange with test host 1；Air accumulator 17 is cylindrical tube, volume 0.3m3, two
Side has the entrance and exit of compressed air, and air accumulator 17 enters in test host 1 for stablizing air pressure, guarantee
Compressed air pressure is constant；Temperature sensor 2, pressure sensor 11 be threadedly attached in test host 1 and air accumulator 17 it
Between pipeline on, for detect enter test host 1 in compressed air pressure and temperature.
A kind of generator sealing bearing bush test method is realized based on a kind of generator sealing bearing bush experimental rig, packet
Include following steps:
Oil temperature is heated to 35 DEG C by the electric heater 7 being first turned in leakproof fuel cell 6, restarts frequency conversion oil pump 9, is adjusted
Oil pressure is observed the actual pressure that the pressure sensor monitoring in 9 exit of frequency conversion oil pump arrives, is carried out with goal pressure to 0.58Mpa
Comparison；
When pressure stablize after, start air compressor 16, by air reducing valve 18 adjust compressed air pressure to
The pressure of 0.5Mpa, observation 17 exit of air accumulator are stablized after goal pressure, and starting test host makes to try by frequency converter
1 soft start of host is tested to 3000r/min, revolving speed deviation cannot be greater than ± 3rpm, and exchange oil pump 6 exports temperature during such as test
Degree is higher than 50 DEG C, closes electric heater 7, opens water cooler 12；
Finally in the process of running, parameters are continued to monitor, is more than regulation limitation if any any parameter, it is necessary at once
It stops transport and tests host 1, after motor comes to a complete stop, compressed air system power-off, stoppage in transit air cooler, stoppage in transit frequency conversion oil pump 9 is looked into
After bright failure cause, it can be tested again.
The beneficial effects of the present invention are:
The invention can not only simulate the normal operating condition of Turbo-generator Set 3000r/min by testing host, lead to
Cross the high-precision sensor of installation, the parameters of accurate recording sealing bearing bush operation, it can be estimated that different sealing bearing bushes and axis
Influence of the parameters such as gap, sealing oil pressure, flow and temperature to sealing bearing bush operating status, and at the same time sealing can be examined
Watt whether can deform in the process of running, sealing bearing bush can be effectively reduced and formally return the probability to break down after dress.
Detailed description of the invention
Fig. 1 is sealing bearing bush experimental rig flow chart
In figure: 1. test hosts；2. temperature sensor；3. speed probe；4. vibrating sensor；5. flow sensor；
6. leakproof fuel cell；7. electric heater；8. gs-oil separator；9. frequency conversion oil pump；10. valve；11. pressure sensor；12. water cooling
Device；13. mechanical filter；14. magnetic filter；15. buffer oil tank；16. air compressor；17. air accumulator；18. air depressurizes
Valve；19. air cleaner；20. air dryer.
Specific embodiment
The present invention is further introduced with embodiment with reference to the accompanying drawing:
A kind of generator sealing bearing bush experimental rig, including test host 1, temperature sensor 2, speed probe 3, vibration
Sensor 4, flow sensor 5, leakproof fuel cell 6, electric heater 7, gs-oil separator 8, frequency conversion oil pump 9, valve 10, pressure pass
Sensor 11, water cooler 12, mechanical filter 13, magnetic filter 14, buffer oil tank 15, air compressor 16, air accumulator 17, sky
Gas pressure reducing valve 18, air cleaner 19 and air dryer 20；It wherein tests and is provided with ten measured holes on host 1 for installing
Temperature sensor 2, speed probe 3, vibrating sensor 4, test host 1 are attached by bolt and leakproof fuel cell 6；It is close
Oil sealing case 6 is pyramid fuel tank, volume 10m3, tank bottoms are square, and are bolted on ground base within 4 weeks
On, fuel tank top is connect with test host 1, and electric heater 7 is placed in inside leakproof fuel cell 6, and electric heater 7 is high-intensitive stick
Electrical heating elements, preferably eight to 12 groups of quantity；Gs-oil separator 8 is by flanged joint in test host 1 and leakproof fuel cell 6
Between；9 entrance of frequency conversion oil pump is connected by flange and the outlet of 6 bottom oil circuit of leakproof fuel cell, and the outlet of frequency conversion oil pump 9 passes through flange
It is connect with valve 10,10 other end of valve is attached by the oil pipe line entrance of flange and water cooler 12, pressure sensor
11, temperature sensor 2 is threadedly attached on the pipeline among valve 10 and water cooler 12；12 oil pipe way outlet of water cooler
It is connect by flange with mechanical filter 13, valve 10 is separately mounted to the inlet and outlet of 12 water lines of water cooler by flange, uses
In the discharge of control cooling water, and then control the temperature of Seal Oil；Temperature sensor 2 is fixed on water cooler 12 and mechanical filter
On the pipeline that device 13 connects；The inlet and outlet of mechanical filter 13 are connect by flange with valve 10, two 13 Hes of mechanical filter
It is connect by flange with water cooler 12 and magnetic filter 14 after 10 parallel connection of valve；14 entrance of magnetic filter passes through pipeline and valve
Accessed in leakproof fuel cell 6 after 10 connections, pressure sensor 11 be connected through a screw thread be separately mounted to the front of mechanical filter 12 and
On the subsequent pipeline of magnetic filter 13；15 bottom of buffer oil tank is provided with the inlet and outlet of oil circuit, and top is provided with stomata, buffering
15 oil circuit import of fuel tank is connect by flange with the outlet of magnetic filter 14, and outlet is connect by flange with test host 1, is pushed up
The stomata in portion is connect by flange with air accumulator 17；Temperature sensor 2, flow sensor 5, pressure sensor 11 are installed on slow
It rushes 15 oil pipe way outlet of fuel tank and tests on the pipeline among host 1；The outlet of air compressor 16 passes through method with 10 entrance of valve
Orchid connection, the outlet of valve 10 successively connect with air reducing valve 18, air cleaner 19, air dryer 20,17 entrance of air accumulator
It connects, the outlet of air accumulator 17 is connect by underwater flange with test host 1；Air accumulator 17 is cylindrical tube, volume 0.3m3, two
Side has the entrance and exit of compressed air, and air accumulator 17 enters in test host 1 for stablizing air pressure, guarantee
Compressed air pressure is constant；Temperature sensor 2, pressure sensor 11 be threadedly attached in test host 1 and air accumulator 17 it
Between pipeline on, for detect enter test host 1 in compressed air pressure and temperature.
A kind of generator sealing bearing bush test method is realized based on a kind of generator sealing bearing bush experimental rig, packet
Include following steps:
Oil temperature is heated to 35 DEG C by the electric heater 7 being first turned in leakproof fuel cell 6, restarts frequency conversion oil pump 9, is adjusted
Oil pressure is observed the actual pressure that the pressure sensor monitoring in 9 exit of frequency conversion oil pump arrives, is carried out with goal pressure to 0.58Mpa
Comparison；
When pressure stablize after, start air compressor 16, by air reducing valve 18 adjust compressed air pressure to
The pressure of 0.5Mpa, observation 17 exit of air accumulator are stablized after goal pressure, and starting test host makes to try by frequency converter
1 soft start of host is tested to 3000r/min, revolving speed deviation cannot be greater than ± 3rpm, and exchange oil pump 6 exports temperature during such as test
Degree is higher than 50 DEG C, closes electric heater 7, opens water cooler 12；
Finally in the process of running, parameters are continued to monitor, is more than regulation limitation if any any parameter, it is necessary at once
It stops transport and tests host 1, after motor comes to a complete stop, compressed air system power-off, stoppage in transit air cooler, stoppage in transit frequency conversion oil pump 9 is looked into
After bright failure cause, it can be tested again.
The invention is by test host, main fuel tank, oil pump, oil cooler, filter, buffer oil tank, air compressor machine, gas storage mechanism
Several big component compositions.
Wherein test host is bolted on above main fuel tank, and oil pump is located on the right side of main fuel tank, and the entrance of oil pump is logical
It crosses flange to connect with fuel tank, fuel pump outlet is attached by flange and oil cooler, and oil cooler outlet connects with filter inlet
It connects, filter outlet is connect by flange with buffer oil tank entrance, and buffer oil tank outlet is connect by flange with test host.
Air compressor machine outlet connect by flange with gas storage mechanism entrance, and the outlet of gas storage mechanism passes through flange and connect with host is tested.
The test host mainly includes alternating current generator, main shaft, wheel disc, sealing bearing bush seat, temperature sensor, revolving speed biography
Sensor, vibrating sensor etc..Alternating current generator drives main shaft and wheel disc to 3000 turns by half around property coupling band, for simulating vapour
The normal operating condition of turbine generator group, temperature sensor, speed probe, vibrating sensor, flow sensor pass through spiral shell spiral shell
Line is connected on sealing bearing bush seat, for the vibration in monitoring test host operational process, revolving speed, the sealing bearing bush temperature tested
Etc. parameters.
The main fuel tank mainly includes leakproof fuel cell, electric heater, gs-oil separator.Leakproof fuel cell is solid by bolt
It being scheduled in ground base, electric heater is placed in inside leakproof fuel cell, for being heated before opening machine to Seal Oil, oil gas point
It is connected between sealing bearing bush seat and leakproof fuel cell from device by pipe flange, for separating the Seal Oil of sealing bearing bush gas side leakage current
And air.
The oil pump is frequency conversion oil pump, provides power for the sealing bearing bush experimental rig sealing oil circuit, guarantee enters examination
Test the oil pressure Pass Test requirement in host.
The oil cooler is water cooler.Water cooler oil pipe line entrance is connect with oil pump, and outlet passes through flange and mechanical mistake
Filter connection guarantees sealing oil temperature within the scope of test requirements document for cooling down to during test to sealing oil temperature.
Water cooler has independent chilled(cooling) water return (CWR) for coolant seal oil.
The filter mainly has mechanical filter, magnetic filter, and mechanical filter inlet and outlet pass through flange and valve
Connection, the entrance after two mechanical filters are in parallel are connected by flange and water cooler outlet, mechanical filter outlet and magnetic mistake
Filter inlet is connected again, and magnetic filter outlet is connect with buffer oil tank.Filter is mainly used for close by test to entering
The Seal Oil of envelope watt is filtered, and guarantees oily Pass Test requirement.
The buffer oil tank is cylindrical tube, and installation site is higher than test host, powered off suddenly for preventing or
Other situations damage sealing bearing bush or other auxiliary equipments in docking process.
The air compressor machine is air compressor, for for compressed air needed for providing sealing bearing bush test.
The gas storage mechanism includes air accumulator, air reducing valve, air cleaner, air dryer.Air accumulator entrance
Between air compressor machine outlet connecting pipe line, it is sequentially installed with air reducing valve, air cleaner, air dryer, guarantees have
The clean air of rated pressure enters in air accumulator, and reservoir outlet is connect with test host, provides for sealing bearing bush test specified
The compressed air of pressure.
As shown in Figure 1, there is shown, leakproof fuel cell 6 is pyramid fuel tank, volume 10m3, tank bottoms are square, and 4 weeks logical
It crosses bolt to be fixed in ground base, fuel tank top is connect with test host 1, and electric heater 7 is placed in inside leakproof fuel cell 6, electricity
Heater 7 is high-intensitive stick electrical heating elements, the preferred 8-12 group of quantity.Gs-oil separator 8 is led by flanged joint in test
Between machine 1 and leakproof fuel cell 6.
As shown in Figure 1,9 entrance of frequency conversion oil pump is connected by flange and the outlet of 6 bottom oil circuit of leakproof fuel cell, frequency conversion oil pump 9
Outlet is connect by flange with valve 10, and 10 other end of valve is connected by the oil pipe line entrance of flange and water cooler 12
It connects, pressure sensor 11, temperature sensor 2 are threadedly attached on the pipeline among valve 10 and water cooler 12.Water cooler
12 oil pipe way outlets are connect by flange with mechanical filter 13, and valve 10 is separately mounted to 12 water pipe of water cooler by flange
The inlet and outlet on road for controlling the discharge of cooling water, and then control the temperature of Seal Oil.Temperature sensor 2 is fixed on water cooler
On 12 pipelines being connect with mechanical filter 13.
As shown in Figure 1, the inlet and outlet of mechanical filter 13 are connect by flange with valve 10, two 13 Hes of mechanical filter
It is connect by flange with water cooler 12 and magnetic filter 14 after 10 parallel connection of valve.14 entrance of magnetic filter passes through pipeline and valve
Accessed in leakproof fuel cell 6 after 10 connections, pressure sensor 11 be connected through a screw thread be separately mounted to the front of mechanical filter 12 and
On the subsequent pipeline of magnetic filter 13.
As shown in Figure 1, buffer oil tank 15 is cylindrical tube, volume 1m3, installation site is higher than test host, is used for
Power-off or other situations suddenly are prevented, sealing bearing bush or other auxiliary equipments are damaged in docking process.It opens 15 bottom of buffer oil tank
There is the inlet and outlet of oil circuit, top is provided with stomata, and 15 oil circuit import of buffer oil tank passes through the outlet of flange and magnetic filter 14
Connection, outlet are connect by flange with test host 1, and the stomata at top is connect by flange with air accumulator 17.Temperature sensor
2, flow sensor 5, pressure sensor 11 are installed on 15 oil pipe way outlet of buffer oil tank and test on the pipeline among host 1.
As shown in Figure 1, the outlet of air compressor 16 with 10 entrance of valve by flanged joint, the outlet of valve 10 successively with
Air reducing valve 18, air cleaner 19, air dryer 20, the connection of 17 entrance of air accumulator, the outlet of air accumulator 17 pass through pipeline
Flange is connect with test host 1.Air accumulator 17 is cylindrical tube, volume 0.3m3, two sides have entering for compressed air
Mouth and outlet, air accumulator 17 guarantee that the compressed air pressure entered in test host 1 is constant for stablizing air pressure.Temperature passes
Sensor 2, pressure sensor 11 be threadedly attached in test host 1 and air accumulator 17 between pipeline on, for detect into
Enter the pressure and temperature to the compressed air in test host 1.
Illustrate the working principle of sealing bearing bush experimental rig provided by the present invention below with reference to Fig. 1: being tested to simulate
The true operating status of sealing bearing bush, this experimental rig simulate Turbo-generator Set operation test host, sealing oil system and
Compressed air system.
It tests host 1 and power is provided, the sealing bearing bush tested is made to reach true operating status.Test host 1 is circumferential to be opened
10 measured holes temperature sensor 2, speed probe 3, vibrating sensor 4 are installed, be used for continual measurement experimental period
Between sealing bearing bush temperature, the speed of mainshaft and Vibration Condition.
Sealing oil system is by leakproof fuel cell 6, frequency conversion oil pump 9, water cooler 12, mechanical filter 13, magnetic filter 14, slow
Rush fuel tank 15, gs-oil separator 8 collectively constitutes.9 outlet pressure of frequency conversion oil pump is adjusted to rated pressure by Frequency Converter Control,
Such as 0.58Mpa, Seal Oil is transported in water cooler 12 from leakproof fuel cell 6 with constant pressure, water cooler 12 belongs to surface-type
Heat exchanger cools down Seal Oil by cooling water, and Seal Oil after cooling enters mechanical filter 13 and magnetic filter
14, distinguish filtration machinery impurity and magnetisable material, Seal Oil enters in buffer oil tank 15 later, again by buffer oil tank 15
It enters in test host test host 1.Pressure sensor 11, temperature sensor 2, flow sensor 5 are used for continual examination
Input pressure, inlet oil temperature, returning-oil temperature, oil inlet flow, return flow during testing.
Compressed air system is used to simulate the operating status of hydrogen in generator hall, the outlet of air compressor 16 successively with
Air reducing valve 18, air cleaner 19, air dryer 20, the connection of 17 entrance of air accumulator, are guaranteed by air reducing valve 18
Compressed air temperature in air accumulator 17 is entered in rated pressure, such as 0.5Mpa, air cleaner 19 and air dryer
20 for guaranteeing that the cleaning drying of compressed air, the outlet of air accumulator 17 are connected on test host 1, for providing sealing bearing bush examination
Required compressed air is tested, temperature sensor 2, pressure sensor 11 are used to continue to monitor the compression entered in test host 1
The pressure and temperature of air.Separately there is a branch to be connected to the stomata at the top of buffer oil tank 15, for guaranteeing in unexpected power-off or
In the case of other, buffer oil tank can provide the Seal Oil of short time in docking process, avoid damaging sealing bearing bush or other are attached
Belong to device.
Operation and test method of the invention:
Oil temperature is heated to 35 DEG C by the electric heater 7 being first turned in leakproof fuel cell 6, restarts frequency conversion oil pump 9, is adjusted
Oil pressure is observed the actual pressure that the pressure sensor monitoring in 9 exit of frequency conversion oil pump arrives, is carried out with goal pressure to 0.58Mpa
Comparison after pressure is stablized, starts air compressor 16, adjusts compressed air pressure to 0.5Mpa by air reducing valve 18, sees
The pressure for examining 17 exit of air accumulator is stablized after goal pressure, and starting test host keeps test host 1 soft by frequency converter
3000r/min is started to, revolving speed deviation cannot be greater than ± 3rpm, and exchange 6 outlet temperature of oil pump is higher than 50 during such as test
DEG C, electric heater 7 is closed, water cooler 12 is opened.In the process of running, parameters are continued to monitor, it is super if any any parameter
Cross regulation limitation, it is necessary to stop transport test host 1, after motor comes to a complete stop at once, compressed air system power-off is stopped transport air-cooled
Device, stoppage in transit frequency conversion oil pump 9 after finding out failure cause, can be tested again.
Above in conjunction with attached drawing, invention is explained in detail, but the present invention is not limited to examples detailed above, in ability
In the knowledge that the those of ordinary skill in domain has, relevant parameter, changing main-spindle 2, wheel disc 3, not are set by changing
Under the premise of being detached from present inventive concept, the purpose tested different types of sealing bearing bush may be implemented.Description of the invention
In the content that is not described in detail the prior art, such as temperature sensor 2, speed probe 3, vibrating sensor can be used
4, flow sensor 5, valve 10, pressure sensor 11, water cooler 12, air reducing valve 18, air cleaner 19, air are dry
The product of the prior art can be used in dry device 20.
Claims (2)
1. a kind of generator sealing bearing bush experimental rig, it is characterised in that: including testing host (1), temperature sensor (2), revolving speed
Sensor (3), vibrating sensor (4), flow sensor (5), leakproof fuel cell (6), electric heater (7), gs-oil separator (8),
Frequency conversion oil pump (9), pressure sensor (11), water cooler (12), mechanical filter (13), magnetic filter (14), delays valve (10)
It rushes fuel tank (15), air compressor (16), air accumulator (17), air reducing valve (18), air cleaner (19) and is air-dried
Device (20)；It wherein tests and is provided with ten measured holes on host (1) for mounting temperature sensor (2), speed probe (3), vibration
Dynamic sensor (4), test host (1) are attached by bolt and leakproof fuel cell (6)；Leakproof fuel cell (6) is pyramid oil
Case, volume 10m3, tank bottoms are square, and (4) week is bolted in ground base, and fuel tank top and test are led
Machine (1) connection, electric heater (7) are placed in leakproof fuel cell (6) inside, and electric heater (7) is high-intensitive stick electrical heating elements, number
Preferably eight to 12 groups of amount；Gs-oil separator (8) is by flanged joint between test host (1) and leakproof fuel cell (6)；Frequency conversion
Oil pump (9) entrance by flange and leakproof fuel cell (6) bottom oil circuit outlet connect, frequency conversion oil pump (9) outlet by flange with
Valve (10) connection, valve (10) other end are attached by the oil pipe line entrance of flange and water cooler (12), pressure sensing
Device (11), temperature sensor (2) are threadedly attached on valve (10) and water cooler (12) intermediate pipeline；Water cooler (12)
Oil pipe way outlet is connect by flange with mechanical filter (13), and valve (10) is separately mounted to water cooler (12) water by flange
The inlet and outlet of pipeline for controlling the discharge of cooling water, and then control the temperature of Seal Oil；Temperature sensor (2) is fixed on water
On the pipeline that cooler (12) is connect with mechanical filter (13)；Mechanical filter (13) inlet and outlet are connected by flange and valve (10)
It connects, is connect by flange with water cooler (12) and magnetic filter (14) after two mechanical filters (13) and valve (10) parallel connection；
Magnetic filter (14) entrance accesses in leakproof fuel cell (6) after being connect by pipeline with valve (10), and pressure sensor (11) passes through
Threaded connection is separately mounted to before mechanical filter (12) and on magnetic filter (13) subsequent pipeline；Buffer oil tank (15) bottom
Portion is provided with the inlet and outlet of oil circuit, and top is provided with stomata, and buffer oil tank (15) oil circuit import passes through flange and magnetic filter
(14) outlet connection, outlet are connect by flange with test host (1), and the stomata at top passes through flange and air accumulator (17) even
It connects；Temperature sensor (2), flow sensor (5), pressure sensor (11) are installed on buffer oil tank (15) oil pipe way outlet and examination
It tests on the intermediate pipeline of host (1)；With valve (10) entrance by flanged joint, valve (10) goes out for air compressor (16) outlet
Mouth is successively connect with air reducing valve (18), air cleaner (19), air dryer (20), air accumulator (17) entrance, gas storage
Tank (17) outlet is connect by underwater flange with test host (1)；Air accumulator (17) is cylindrical tube, volume 0.3m3, two sides
The entrance and exit of compressed air is had, air accumulator (17) enters in test host (1) for stablizing air pressure, guarantee
Compressed air pressure is constant；Temperature sensor (2), pressure sensor (11) are threadedly attached in test host (1) and gas storage
On pipeline between tank (17), for detecting the pressure and temperature of the compressed air entered in test host (1).
2. a kind of generator sealing bearing bush test method is realized based on a kind of generator sealing bearing bush test described in claim 1
Device, it is characterised in that: the following steps are included:
The electric heater (7) being first turned in leakproof fuel cell (6), is heated to 35 DEG C for oil temperature, restarts frequency conversion oil pump 9, adjusts
Oil pressure observes the actual pressure that the pressure sensor monitoring in frequency conversion oil pump (9) exit arrives to 0.58Mpa, with goal pressure into
Row comparison；
When pressure stablize after, start air compressor (16), by air reducing valve (18) adjust compressed air pressure to
The pressure of 0.5Mpa, observation air accumulator (17) exit are stablized after goal pressure, and starting test host makes to try by frequency converter
Host (1) soft start is tested to 3000r/min, revolving speed deviation cannot be greater than ± 3rpm, exchange oil pump (6) outlet during such as test
Temperature is higher than 50 DEG C, closes electric heater (7), opens water cooler (12)；
Finally in the process of running, parameters are continued to monitor, is more than regulation limitation if any any parameter, it is necessary to examination of stopping transport at once
Test host (1), after motor comes to a complete stop, compressed air system powers off, stoppage in transit air cooler, stoppage in transit frequency conversion oil pump (9), finds out event
After hindering reason, it can be tested again.
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Cited By (1)
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| CN114354179A (en) * | 2021-12-30 | 2022-04-15 | 哈尔滨哈控实业有限公司 | Balance valve testing system and method |
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| CN109990987B (en) | 2024-04-09 |
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