CN104502214B - Turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system - Google Patents
Turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system Download PDFInfo
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- CN104502214B CN104502214B CN201410816601.XA CN201410816601A CN104502214B CN 104502214 B CN104502214 B CN 104502214B CN 201410816601 A CN201410816601 A CN 201410816601A CN 104502214 B CN104502214 B CN 104502214B
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Abstract
The present invention discloses a kind of turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system, including experiment casing and high speed drop generator；Testing casing includes seal casinghousing, some shower nozzles and rotor；Rotor is installed on seal casinghousing；The side of seal casinghousing is disposed with some shower nozzles；Rotor is provided with some mounting grooves for being used to install test sample；Mounting groove is corresponding with spray outlet position；High speed drop generator includes magnetic valve, hydraulic operated valve, deionization water tank, water pump, the first pipeline and the second pipeline；Water pump connects the deionized water input port of deionization water tank and hydraulic operated valve；Magnetic valve connects hydraulic operated valve；The first and second deionized water outlet of hydraulic operated valve is by the first pipeline, the pipeline of the second pipeline connection the 3rd, and the 3rd pipeline connects some shower nozzles；A kind of turbine blade material of the present invention and strengthened coat Anti-erosion and corrosive nature pilot system, by setting high speed drop generator, can farthest reduce the real running environment of low pressure blade.
Description
Technical field
The present invention relates to a kind of material erosion test device, and in particular to one kind is used for research material and strengthened coat anti-impact
Erosion and the experimental rig of corrosive nature.
Background technology
Turbine blade is the important component for the heat energy of steam being converted into mechanical energy, and its working environment is extremely severe, fortune
Except by gas-flow bending stress, centrifugation tension and the Airflow Exciting-Vibration Force changed over time, being operated in the leaf of wet-steam region in row
Piece still suffers from water droplet erosion and chemical attack, and blade accident happens occasionally.Therefore, the security of blade receives steamer mechanism
Make the close attention in enterprise, scientific research institution and power station.
The blade surface damage of turbine for wet steam area is caused, mainly there is the corrosive ion in coarse water and water.Subtract
The few influence of corrosive ion and high velocity water droplets to turbine blade except improving steam quality, using more preferable dehydrating unit and
Water-bound is caught, it is main at present to use passive protection mode, i.e., to using the more preferable blade material of intensity hardness and using more preferable
Overcoat.
If the effect of passive protection technology is examined on the steam turbine of actual motion, cost will be extremely high, and
And check-verifying period is also very long, the possibility caused danger is very big.The test platform of blade material and overcoat need to provide with
The close environment of wet-steam region blade, makes experimental result reliable, at the same can quickly provide material and protective coating it is anticorrosive and
The result of shock.Micromechanism of damage caused by blade is hit by water droplet, corrosivity drop is studied, blade is provided under such circumstances
Damage process curve.
Large-scale power station turbine for wet steam area's blade working is in humidity is larger, the environment of air velocity quickly, and existing reality
Check system only realizes the high-speed impact under atmospheric pressure, and some systems replace the relatively low height of temperature with the steam stream more than 100 DEG C
Fast water droplet, is all difficult to really reduce the real running environment of low pressure blade, experiment effect is just difficult to ensure that.
The content of the invention
Tested it is an object of the invention to provide a kind of turbine blade material and strengthened coat Anti-erosion and corrosive nature
System, farthest the reduction real running environment of low pressure blade, and then study the mechanism of blade erosion and provide blade damage
The conditional curve of wound.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
Turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system, including experiment casing and high velocity liquid
Drip generator；Testing casing includes seal casinghousing, some shower nozzles and rotor；Rotor is installed on seal casinghousing；Seal casinghousing
Side is disposed with some shower nozzles；Rotor is provided with some mounting grooves for being used to install test sample；Mounting groove and spray outlet position
Put correspondence；High speed drop generator includes magnetic valve, hydraulic operated valve, deionization water tank, water pump, motor, low pressure fuel pump, fuel tank, the
One pipeline and the second pipeline；Water pump connects the deionized water input port of deionization water tank and hydraulic operated valve；Magnetic valve connects hydraulic operated valve；
The first and second deionized water outlet of hydraulic operated valve is by the first pipeline, the pipeline of the second pipeline connection the 3rd, and the connection of the 3rd pipeline is described
Some shower nozzles；Motor connection low pressure fuel pump, the fluid entrance connection fuel tank of low pressure fuel pump, the fluid outlet liquid of low pressure fuel pump
The fluid entrance of dynamic valve, the fluid outlet fuel tank of hydraulic operated valve.
It is preferred that, the diameter for being directly less than the first pipeline and the second pipeline of the 3rd pipeline.
It is preferred that, main shaft one end of rotor is by bearings in the side of seal casinghousing, and the other end stretches out seal casinghousing
It is outer and pass through main shaft axle stretch end sealing structure and seal.
It is preferred that, the length of the second pipeline is three times of the first pipeline.
It is preferred that, the turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system also include control
Electric cabinet, direct current generator, gear speedup case, lubricating oil station, vavuum pump, draining pump, double filter, water tank and condition monitoring and
Signal acquiring processing system；The condition monitoring and signal acquiring processing system include computer, speed probe and vibration and passed
Sensor；The output end of the electric cabinet of control connects the control end of direct current generator, and the output shaft of direct current generator connects the defeated of gear speedup case
Enter axle, the output shaft of direct current generator is provided with vibrating sensor, the output end connection computer of vibrating sensor；Gear speedup case
It is connected as its lubricating oil station that lubricating oil is provided；The main shaft of rotor stretches out the output of one end connection gear speedup case of seal casinghousing
The speed probe of connection computer is installed on axle, the output shaft of gear speedup case；Seal casinghousing connects vavuum pump and draining
Pump；The entrance connection water tank of filter, the deionized water being filtrated to get by filter is passed through in deionization water tank.
It is preferred that, shower nozzle is fixed on the side wall of seal casinghousing by shower nozzle support meanss；Some shower nozzle annulars are uniform
In the side of seal casinghousing；The nozzle diameter of shower nozzle is 0.1~0.3mm.
It is preferred that, heater is provided with the deionization water tank.
It is preferred that, shower nozzle is connected with corrosive liquids compensation device.
Relative to prior art, the present invention has advantages below：A kind of turbine blade material of the present invention and strengthened coat
Anti-erosion and corrosive nature pilot system, by setting high speed drop generator, can farthest reduce low pressure blade true
Real running environment；, can be to various materials (material containing surface treatment) with various projected angle of impacts and speed with once testing
Carry out experimental study；Homogeneous is not tested, and the erosion experimental analysis under various working can be carried out to same material；Can be to corrosion
The influence of property ion pair erosion is analyzed.
Brief description of the drawings
Fig. 1 is the system diagram of pilot system of the present invention；
Fig. 2 is that pilot system of the present invention tests casing structural front view；
Fig. 3 is that pilot system of the present invention tests body side sectional view；
Fig. 4 is that pilot system of the present invention tests casing screw thread watertight construction figure；
Fig. 5 is the schematic diagram of the high-speed and continuous drop generating device of pilot system of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Refer to shown in Fig. 1 to Fig. 5, the experiment system of a kind of material and strengthened coat Anti-erosion of the invention and corrosive nature
System, including it is the electric cabinet 1 of control, direct current generator 2, gear speedup case 3, experiment casing 4, high speed drop generator 5, lubricating oil station 6, true
Empty pump 7, draining pump 8, double filter 9, water tank 10 and condition monitoring and signal acquiring processing system (including computer 11,
Speed probe 12 and vibrating sensor 13).
The output end of the electric cabinet 1 of control connects the control end of direct current generator 2, the output shaft connection gear up of direct current generator 2
The input shaft of case 3, the output shaft of direct current generator 2 is provided with vibrating sensor 13, and the output end connection of vibrating sensor 13 is calculated
Machine 11；Gear speedup case 3 is connected as the lubricating oil station 6 that it provides lubricating oil.
Refer to shown in Fig. 2, experiment casing 4 includes seal casinghousing, shower nozzle, shower nozzle support meanss 23 and rotor；Rotor
The one end of main shaft 25 is by bearings in the side of seal casinghousing, and it is outer and close by main shaft axle stretch end that the other end stretches out seal casinghousing
Seal structure 24 is sealed；The side annular of seal casinghousing is evenly arranged multiple shower nozzles, and shower nozzle passes through corresponding high speed drop generator
Shower nozzle support meanss 23 are fixed on the side wall of seal casinghousing；Rotor is provided with multiple mounting grooves, each mounting groove and is provided with survey
Have a try sample 26；Mounting groove is corresponding with spray outlet position, and the liquid that shower nozzle sprays can encounter the test sample 26 in mounting groove
On.Main shaft axle stretch end sealing structure 24 includes a set of reverse sealing screw thread 27 and sealing water imports and exports 28.Main shaft 25 stretches out
One end of seal casinghousing connects and is provided with speed probe on the output shaft of gear speedup case 3, the output shaft of gear speedup case 3
12。
Seal casinghousing is stainless steel；Active section is arranged in seal casinghousing.Also opened up with side wall at the top of seal casinghousing
There are transparent windows 29, observation window 29 is mainly used as experiment progress and detects and can be transformed when needing in experimentation
Into shower nozzle installation site.Sample is further opened with the top of seal casinghousing and changes window, bottom can be provided with sewage draining exit, sewage draining exit connection draining
Pump 8.Active section is made up of the pressing plate of rotor and fastening sample, and being installed on box house, main shaft has watertight construction, it is ensured that take out
Vacuum effectiveness.Main shaft is dragged by the outstanding direct current generator of speed adjusting performance by gear speedup case, and gear-box and main shaft bearing are strong
System lubrication.
Refer to shown in Fig. 3, high speed drop generator 5 includes magnetic valve 14, hydraulic operated valve 15, deionization water tank 16, water pump
17th, motor 18, low pressure fuel pump 19, fuel tank 20, the first pipeline 21 and the second pipeline 22.The connection deionization of water pump 17 water tank 16 and liquid
The deionized water input port of dynamic valve 15；Magnetic valve 14 connects hydraulic operated valve 15, and hydraulic operated valve 15 is entered water by the control of magnetic valve 14
Row primary pressure, and discharged respectively from the first pipeline 21 and the second pipeline 22 with certain frequency；The first and second of hydraulic operated valve 15
Deionized water outlet connects the 3rd pipeline by the first pipeline 21, the second pipeline 22, the 3rd pipeline directly less than the first pipeline
21 and second pipeline 22 diameter, the 3rd pipeline connects multiple shower nozzles.Motor 18 connects low pressure fuel pump 19, for driving low pressure oil
Oil pressure in fuel tank 20 is entered hydraulic operated valve 15 by pump 19.
The entrance connection water tank 10 of filter 9, the deionized water being filtrated to get by filter 9 is passed through deionization water tank 16
In.
The water under high pressure discharged from the first pipeline 21 and the second pipeline 22 enters after thinner pipeline, is sprayed by shower nozzle；
Flow is met under conditions of demand, can be installed the i.e. multiple shower nozzles of multiple support meanss and be tested；It is preferred that, can also be in spray
The corrosive liquids compensation device of connection shower nozzle is installed, to study the influence of corrosive ion at head.
During the pilot system work of a kind of material of the present invention and strengthened coat Anti-erosion and corrosive nature, direct current generator 2 exists
Main shaft 25 namely rotor driven in experiment casing 4 is driven to be rotated by gear speedup case 3 under the control of the electric cabinet 1 of control.
Deionized water is extracted the generation high speed drop after two-stage pressurization out of deionization water tank 16 and led to by high speed drop generator 5 simultaneously
Cross shower nozzle to spray into 4 in chamber body, strike is arranged on the test sample 26 in rotor mounting groove.
High velocity liquid is hit from two aspects admittedly：On the one hand it is high speed drop generator 5, another part is from main shaft
Rotation, the cooperation of the two can form the effect of high speed drop shock.And, can be in electrical heating because liquid is before supercharging
Heated in equipment, further to the environment temperature residing for blade material.
High speed drop generator 5 uses two-stage pressurization, and deionized water is pressurized into high pressure using low pressure oil, then by two-way
Water spray adds what is completed by the heel row of the reducing diminution of caliber to shower nozzle, and electro-hydraulic reversing valve uses DC power control, and selects
With the higher type of operating frequency.The length of second pipeline 22 is three times of the first pipeline 21, and high pressure crest can be allowed regular
Generation, coordinate main shaft high speed rotation, just can produce the impact effects of obvious high speed drop.
For example, deionized water is pressurized to 15MPa such as low pressure fuel pump, then the can be approximately tried to achieve by Bernoulli equation
Water speed in one pipeline 21 and the second pipeline 22 is about 173m/s, and design the first pipeline 21 length is 0.5m, and the second pipeline 22 is
Its triple-length 1.5m, even if then High-Pressure Water flows to outlet simultaneously, its time has still differed 6ms or so, it is further assumed that electro-hydraulic
The frequency of reversal valve is to be commutated 2 times in 120 beats/min, i.e., 1 second, thus the first pipeline 21 and the second pipeline 22 water certainly not
Discharge simultaneously, then by two grades of reducing pressurizings, the effect of similar high speed drop may finally be produced.In order that system more may be used
Lean on, system makes rotor rotate at a high speed again, just can realize what high speed drop was hit.
In order that the formation of drop, the generation environment of knockout process are closer to true environment, and due to being worked in casing
When the spray that splashes and water smoke riddle wherein, during work, seal casinghousing is vacuumized using water-ring vacuum pump 7；Except
Outside the pressure environment for manufacturing 5kPa or so, moreover it is possible to exclude the steam splashed, and played for the observation and monitoring of experimentation
Important function.
A kind of turbine blade material of the present invention and strengthened coat Anti-erosion and corrosive nature pilot system, with reliably simultaneously
And the parameter that can quantify, high speed drop speed maximum can exceed 700m/s, and jet diameters can be in 0.1~0.3mm
Between adjust, the speed of mainshaft can adjust between 0~9000rpm, and experimental section low pressure can reach and be stably maintained at
5kPa.With once testing, various materials (material containing surface treatment) can be tested with various projected angle of impacts and speed
Research；Homogeneous is not tested, and the erosion experimental analysis under various working can be carried out to same material；Can be to corrosive ion pair
The influence of erosion is analyzed.
Claims (1)
1. turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system, it is characterised in that including chamber
Body (4) and high speed drop generator (5)；
Testing casing (4) includes seal casinghousing, some shower nozzles and rotor；Rotor is installed on seal casinghousing；The one of seal casinghousing
Side is disposed with some shower nozzles；Rotor is provided with some mounting grooves for being used to install test sample (26)；Mounting groove and spray outlet
Position correspondence；
High speed drop generator (5) includes magnetic valve (14), hydraulic operated valve (15), deionization water tank (16), water pump (17), motor
(18), low pressure fuel pump (19), fuel tank (20), the first pipeline (21) and the second pipeline (22)；Water pump (17) connects deionization water tank
(16) and hydraulic operated valve (15) deionized water input port；Magnetic valve (14) connection hydraulic operated valve (15)；The first and second of hydraulic operated valve (15)
Deionized water outlet connects the 3rd pipeline by the first pipeline (21), the second pipeline (22), and the 3rd pipeline connects some sprays
Head；Motor (18) connection low pressure fuel pump (19), the fluid entrance connection fuel tank (20) of low pressure fuel pump (19), low pressure fuel pump (19)
The fluid entrance of fluid outlet hydraulic operated valve (15), the fluid outlet fuel tank (20) of hydraulic operated valve (15)；
The diameter of 3rd pipeline is less than the diameter of the first pipeline (21) and the second pipeline (22)；
Main shaft (25) one end of rotor is by bearings in the side of seal casinghousing, and the other end stretches out outside seal casinghousing and passed through
Main shaft axle stretch end sealing structure (24) is sealed；Main shaft axle stretch end sealing structure (24) include it is a set of it is reverse sealing screw thread (27) and
Sealing water imports and exports (28)；
The length of second pipeline (22) is three times of the first pipeline (21)；
The turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system also include the electric cabinet (1) of control, straight
Flow motor (2), gear speedup case (3), lubricating oil station (6), vavuum pump (7), draining pump (8), double filter (9), water tank
And condition monitoring and signal acquiring processing system (10)；The condition monitoring and signal acquiring processing system include computer
(11), speed probe (12) and vibrating sensor (13)；The control of the output end connection direct current generator (2) of the electric cabinet (1) of control
End, the input shaft of the output shaft connection gear speedup case (3) of direct current generator (2), the output shaft of direct current generator (2) is provided with vibration
Sensor (13), the output end connection computer (11) of vibrating sensor (13)；Gear speedup case (3) is connected as it and provides lubrication
The lubricating oil station (6) of oil；The main shaft (25) of rotor stretches out the output shaft of one end connection gear speedup case (3) of seal casinghousing, tooth
The speed probe (12) of connection computer (11) is installed on the output shaft of wheel gearbox (3)；Seal casinghousing connects vavuum pump
And draining pump (8) (7)；The entrance connection water tank (10) of filter (9), the deionized water being filtrated to get by filter (9) is led to
Enter in deionization water tank (16)；
Shower nozzle is fixed on the side wall of seal casinghousing by shower nozzle support meanss；Some shower nozzle annulars are distributed in seal casinghousing
Side；The nozzle diameter of shower nozzle is 0.1~0.3mm；
Heater is provided with the deionization water tank (16)；
Shower nozzle is connected with corrosive liquids compensation device；
During work, seal casinghousing is vacuumized using vavuum pump (7), 5kPa pressure environment is manufactured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816601.XA CN104502214B (en) | 2014-12-23 | 2014-12-23 | Turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816601.XA CN104502214B (en) | 2014-12-23 | 2014-12-23 | Turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system |
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| Publication Number | Publication Date |
|---|---|
| CN104502214A CN104502214A (en) | 2015-04-08 |
| CN104502214B true CN104502214B (en) | 2017-08-15 |
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| CN201410816601.XA Active CN104502214B (en) | 2014-12-23 | 2014-12-23 | Turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404652A (en) * | 2016-10-20 | 2017-02-15 | 深圳供电局有限公司 | Device for testing aging of sealing ring material |
| CN107588912A (en) * | 2017-10-12 | 2018-01-16 | 中国船舶重工集团公司第七0三研究所 | One kind sealing integration test device |
| CN108507893B (en) * | 2018-03-28 | 2021-04-27 | 长江大学 | Erosion device and sample erosion wear rate measuring apparatus |
| CN110160946B (en) * | 2019-05-24 | 2021-08-03 | 国网浙江省电力有限公司电力科学研究院 | Deep peak regulation steam turbine blade erosion test system and test method thereof |
| CN110887899B (en) * | 2019-11-27 | 2020-11-10 | 西安交通大学 | Turbine blade water erosion defect monitoring and identifying method |
| CN114166675B (en) * | 2021-12-02 | 2024-04-26 | 江苏心源航空科技有限公司 | Rotary erosion simulation casing |
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|---|---|---|---|---|
| CN86106341A (en) * | 1986-09-19 | 1988-03-30 | 吴明坚 | A kind of reversing arrangement of pressurized machine |
| CN101140210A (en) * | 2007-10-09 | 2008-03-12 | 西安交通大学 | Turbine blade erosion tester |
| CN101806691A (en) * | 2010-03-05 | 2010-08-18 | 湖南省湘电锅炉压力容器检验中心有限公司 | Water erosion test device |
| CN102252927A (en) * | 2011-03-24 | 2011-11-23 | 西安交通大学 | Water erosion experimental facility with/under rotary impact of high-pressure water jet |
-
2014
- 2014-12-23 CN CN201410816601.XA patent/CN104502214B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106341A (en) * | 1986-09-19 | 1988-03-30 | 吴明坚 | A kind of reversing arrangement of pressurized machine |
| CN101140210A (en) * | 2007-10-09 | 2008-03-12 | 西安交通大学 | Turbine blade erosion tester |
| CN101806691A (en) * | 2010-03-05 | 2010-08-18 | 湖南省湘电锅炉压力容器检验中心有限公司 | Water erosion test device |
| CN102252927A (en) * | 2011-03-24 | 2011-11-23 | 西安交通大学 | Water erosion experimental facility with/under rotary impact of high-pressure water jet |
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| CN104502214A (en) | 2015-04-08 |
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