CN209513233U - A kind of more load test devices of exhaust stage blade elongation - Google Patents
A kind of more load test devices of exhaust stage blade elongation Download PDFInfo
- Publication number
- CN209513233U CN209513233U CN201822215105.5U CN201822215105U CN209513233U CN 209513233 U CN209513233 U CN 209513233U CN 201822215105 U CN201822215105 U CN 201822215105U CN 209513233 U CN209513233 U CN 209513233U
- Authority
- CN
- China
- Prior art keywords
- stage blade
- exhaust stage
- load
- displacement sensor
- elongation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of more load test devices of exhaust stage blade elongation of fired power generating unit equipment technical field, including damping base, driving motor is separately installed at the top of damping base, reduction gearbox, test cabinet, exhaust stage blade and control device, the output end of driving motor and the input terminal of reduction gearbox are socketed with belt wheel, strain gauge and displacement sensor are installed on the outer wall of exhaust stage blade, the inner cavity top and bottom for testing cabinet are respectively equipped with heater and temperature sensor, periphery positioned at exhaust stage blade is equipped with mounting rack, the inner wall of mounting rack is uniformly equipped with electromagnet, static load and dynamic load are applied to exhaust stage blade by multiple electromagnet, realize elongation change modeling of the exhaust stage blade under different temperatures and load, pressure sensor detects quiet, the elongation of dynamic stress variation and displacement sensor detection Amount is handled by control device, can simulate true operating condition as far as possible, guarantees exhaust stage blade design requirement.
Description
Technical field
The utility model relates to fired power generating unit equipment technical field, specially a kind of more Road tests of exhaust stage blade elongation
Device.
Background technique
With whole society's power demand slowdown in growth and the extensive development of renewable energy, thermoelectricity will using hourage
It can decline year by year, promote thermal power unit operation flexibility thus, the extensive power grid depth peak regulation that participates in will be trend of the times, not
Come, unit, which is in underrun, will become normality.When electricity needs is less, it is negative that the workload of regulating units is less than design
Lotus, the volume flow actually flowed through is again smaller than design volume flow；For condensing turbine, when load variations, flow through
Steam flow also changes, and causes the variation of cooling water temperature, and back pressure also changes correspondingly, and finally causes low pressure (LP) cylinder volume flow
Variation；For cogeneration units, need to carry out intergrade steam extraction heating, this will also result in what volume flow after steam extraction
Less than design volume flow；In air cooling unit, back pressure changes with the variation of atmospheric temperature, when operating back pressure is higher than design
When back pressure, work but also unit low pressure (LP) cylinder final stage is under little volume flow.Therefore, unit little volume flow problem will be in future
A more universal problem will be become in thermal power unit operation, unit minimum safe flow rate mode running technology is studied,
There to be very important meaning.
Wherein whether exhaust stage blade elongation meets design requirement, is to determine unit low pressure (LP) cylinder final stage minimum discharge operation mould
Formula safety and stability it is good with it is bad, guarantee that the design requirement of exhaust stage blade is to improve low pressure (LP) cylinder minimum discharge operating conditions to adjust plan
Slightly, unit economy is improved to greatest extent.
Based on this, the utility model devises a kind of more load test devices of exhaust stage blade elongation, to solve above-mentioned ask
Topic.
Utility model content
The purpose of this utility model is to provide a kind of pair of exhaust stage blades to apply static load and dynamic load, realizes final stage
The more load test devices of exhaust stage blade elongation of elongation change modeling and detection of the blade under different temperatures and load, with
Solve the problems mentioned above in the background art.
To achieve the above object, the utility model provides the following technical solutions: a kind of more load measurings of exhaust stage blade elongation
Trial assembly is set, including damping base, and driving motor, reduction gearbox, test cabinet, final stage are separately installed at the top of the damping base
Blade and control device, the output end of the driving motor and the input terminal of reduction gearbox are socketed with belt wheel, belt wheel described in two groups
Between by belt be sequentially connected, the output end of the reduction gearbox with through test box house transmission shaft dock, it is described
Exhaust stage blade is located at the outside of transmission shaft, and strain gauge and displacement sensor, institute are equipped on the outer wall of the exhaust stage blade
The inner cavity top and bottom for stating test cabinet are respectively equipped with heater and temperature sensor, and the periphery positioned at exhaust stage blade is equipped with
Mounting rack, the inner wall of the mounting rack are uniformly equipped with electromagnet, and the bottom of the test cabinet is fixedly mounted by damping block
At the top of damping base, the driving motor, strain gauge, displacement sensor, heater, temperature sensor and electromagnet
It is connect by data line with control device.
Preferably, foam heat-insulation layer is installed on the inner wall of the test cabinet.
Preferably, the both ends of the transmission shaft and the junction of test cabinet are equipped with sealing bearing.
Preferably, the exhaust stage blade, strain gauge and displacement sensor are equipped with several, and each exhaust stage blade
On be mounted on a strain gauge and displacement sensor.
Preferably, the electromagnet is equipped with equiangularly arranged eight on mounting rack inner wall group.
Compared with prior art, the utility model has the beneficial effects that the design of the utility model structure is simple, pass through driving
Motor and reduction gearbox drive exhaust stage blade to work, and apply static load to exhaust stage blade by multiple electromagnet and dynamic is negative
Carry, detected by pressure sensor, while being cooperated by temperature sensor and heater, realize exhaust stage blade in different temperatures and
Elongation change modeling under load, and detected by displacement sensor, quiet, the dynamic stress variation of pressure sensor detection
It is handled with the elongation of displacement sensor detection by control device, true operating condition can be simulated as far as possible, so that
The detection of exhaust stage blade is more accurate, guarantees exhaust stage blade design requirement.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model mounting rack structural schematic diagram.
In attached drawing, parts list represented by the reference numerals are as follows:
1- damping base, 2- driving motor, 3- reduction gearbox, 4- belt wheel, 5- belt, 6- test cabinet, 7- transmission shaft, the end 8-
Grade blade, 9- strain gauge, 10- displacement sensor, 11- heater, 12- temperature sensor, 13- mounting rack, 14- electromagnetism
Iron, 15- seal bearing, 16- damping block, 17- control device.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of more load measuring trial assemblies of exhaust stage blade elongation
It sets, including damping base 1, the top of the damping base 1 is separately installed with driving motor 2, reduction gearbox 3, test cabinet 6, end
Grade blade 8 and control device 17, the output end of the driving motor 2 and the input terminal of reduction gearbox 3 are socketed with belt wheel 4, and two groups
Be sequentially connected between the belt wheel 4 by belt 5, the output end of the reduction gearbox 3 with through the transmission inside test cabinet 6
Axis 7 docks, and the exhaust stage blade 8 is located at the outside of transmission shaft 7, is equipped with strain gauge 9 on the outer wall of the exhaust stage blade 8
With displacement sensor 10, the inner cavity top of the test cabinet 6 and bottom are respectively equipped with heater 11 and temperature sensor 12, position
Mounting rack 13 is installed in the periphery of exhaust stage blade 8, the inner wall of the mounting rack 13 is uniformly equipped with electromagnet 14, the test
The bottom of cabinet 6 is fixedly mounted on the top of damping base 1, the driving motor 2, strain gauge 9, position by damping block 16
Displacement sensor 10, heater 11, temperature sensor 12 and electromagnet 14 are connect by data line with control device 17, temperature
It spends 12 model of sensor and uses pt100 temperature sensor.
Wherein, foam heat-insulation layer is installed on the inner wall of the test cabinet 6, there is good heat insulation effect, so that surveying
The interior temperature of examination cabinet 6 can be maintained preferably, and the both ends of the transmission shaft 7 and the junction of test cabinet 6 are equipped with sealing
Bearing guarantees its leakproofness, avoids temperature from scattering and disappearing, the exhaust stage blade 8, strain gauge 9 and displacement sensor 10 are equipped with
Several, and a strain gauge 9 and displacement sensor 10 are mounted on each exhaust stage blade 8,9 model of strain gauge
Using GYW20W strain gauge, 10 model of displacement sensor uses LWF-1000-A1 linear displacement transducer, passes through several
Strain gauge 9 and displacement sensor 10 can multistage detection exhaust stage blade 8 stress value and elongation, the electromagnet 14 is equipped with
Equiangularly arranged eight groups on 13 inner wall of mounting rack, are provided to the load on exhaust stage blade different directions.
One concrete application of the present embodiment are as follows: in use, by the way that driving motor 2 is connected extraneous power supply, driving motor 2
It drives the exhaust stage blade 8 being located on transmission shaft 7 to be rotated by belt 5 and reduction gearbox 3, simulates exhaust stage blade working condition,
Then the magnetic force for controlling each electromagnet 14 by control device 17 in test cabinet 6, generates load to exhaust stage blade 8 to adjust
Size can be divided into axial force load and axial vibration load wherein from the point of view of according to loading type, carrying out axial force load
When, it is only necessary to direct current is passed through to electromagnet 14, belongs to static load；When carrying out axial vibration load, need to electromagnet
14 are passed through the electric current of amplitude and frequency real-time change, belong to dynamic load, and detect its quiet, dynamic stress by strain gauge 9
Variation, electromagnet 14 are equipped with equiangularly arranged eight groups on 13 inner wall of mounting rack, provide on exhaust stage blade different directions
Load, enhances the precision of in-site modeling, in addition, can be to the temperature in test cabinet 6 by heater 11, and pass through temperature sensing
Realize exhaust stage blade under different temperatures and load convenient for regulating and controlling by control device 17 in the inside of the detection test cabinet 6 of device 12
Elongation change modeling, then by displacement sensor 10 detect exhaust stage blade 8 elongation, control device 17 use CFD
Software, CFD software are made of pre-treatment, solver, post-processing three parts, three big modules of pre-treatment, solver and post-processing, respectively
There is its unique effect, respectively indicate as follows: pre-treatment a, geometrical model；B, solver a, grid division determines CFD approach
Governing equation；B, selection discrete method carries out discrete；C, numerical computation method is selected；D, relevant parameter is inputted, post-processing is used for
Temperature field, pressure field and other parameters computer visualization and animation process.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one of the utility model
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (5)
1. a kind of more load test devices of exhaust stage blade elongation, including damping base (1), it is characterised in that: the damping bottom
Driving motor (2), reduction gearbox (3), test cabinet (6), exhaust stage blade (8) and control device are separately installed at the top of seat (1)
(17), the output end of the driving motor (2) and the input terminal of reduction gearbox (3) are socketed with belt wheel (4), belt wheel described in two groups
(4) it is sequentially connected between by belt (5), the output end of the reduction gearbox (3) and the transmission internal through test cabinet (6)
Axis (7) docking, the exhaust stage blade (8) are located at the outside of transmission shaft (7), are equipped with and answer on the outer wall of the exhaust stage blade (8)
Force snesor (9) and displacement sensor (10), the inner cavity top of test cabinet (6) and bottom are respectively equipped with heater (11)
With temperature sensor (12), the periphery for being located at exhaust stage blade (8) is equipped with mounting rack (13), and the inner wall of the mounting rack (13) is equal
Even to be equipped with electromagnet (14), the bottom of test cabinet (6) is fixedly mounted on damping base (1) by damping block (16)
Top, the driving motor (2), strain gauge (9), displacement sensor (10), heater (11), temperature sensor (12) and
Electromagnet (14) is connect by data line with control device (17).
2. a kind of more load test devices of exhaust stage blade elongation according to claim 1, it is characterised in that: the test
Foam heat-insulation layer is installed on the inner wall of cabinet (6).
3. a kind of more load test devices of exhaust stage blade elongation according to claim 1, it is characterised in that: the transmission
The both ends of axis (7) and the junction of test cabinet (6) are equipped with sealing bearing.
4. a kind of more load test devices of exhaust stage blade elongation according to claim 1, it is characterised in that: the final stage
Blade (8), strain gauge (9) and displacement sensor (10) are equipped with several, and are mounted on each exhaust stage blade (8)
One strain gauge (9) and displacement sensor (10).
5. a kind of more load test devices of exhaust stage blade elongation according to claim 1, it is characterised in that: the electromagnetism
Iron (14) is equipped with equiangularly arranged eight groups on mounting rack (13) inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822215105.5U CN209513233U (en) | 2018-12-27 | 2018-12-27 | A kind of more load test devices of exhaust stage blade elongation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822215105.5U CN209513233U (en) | 2018-12-27 | 2018-12-27 | A kind of more load test devices of exhaust stage blade elongation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209513233U true CN209513233U (en) | 2019-10-18 |
Family
ID=68197638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822215105.5U Expired - Fee Related CN209513233U (en) | 2018-12-27 | 2018-12-27 | A kind of more load test devices of exhaust stage blade elongation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209513233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111832126A (en) * | 2020-06-19 | 2020-10-27 | 大唐东北电力试验研究院有限公司 | Low-pressure cylinder last-stage blade static stress analysis method |
-
2018
- 2018-12-27 CN CN201822215105.5U patent/CN209513233U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111832126A (en) * | 2020-06-19 | 2020-10-27 | 大唐东北电力试验研究院有限公司 | Low-pressure cylinder last-stage blade static stress analysis method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Battisti et al. | Aerodynamic measurements on a vertical axis wind turbine in a large scale wind tunnel | |
| CN201096619Y (en) | Ship water lubricated stern bearing test device | |
| Liu et al. | Investigation of the effects of platform motion on the aerodynamics of a floating offshore wind turbine | |
| CN105699074B (en) | A kind of blade rotor system fluid structurecoupling dynamic property tester | |
| CN203178069U (en) | Hydraulic torque converter assembly performance test platform | |
| CN205262736U (en) | Multistage planetary gear case combined test platform | |
| Wang et al. | Theoretical and experimental study on the static and dynamic characteristics of tilting-pad thrust bearing | |
| Allmark et al. | The development, design and characterisation of a scale model Horizontal Axis Tidal Turbine for dynamic load quantification | |
| CN209513233U (en) | A kind of more load test devices of exhaust stage blade elongation | |
| Zheng et al. | Influences of rotational speed variations on the flow-induced vibrational performance of a prototype reversible pump turbine in spin-no-load mode | |
| CN102540075A (en) | Loading performance test device for generator unit | |
| CN102749195B (en) | High-speed water bearing performance test device with air seal | |
| Zhu et al. | Experimental and numerical study of the adsorption performance of a vortex suction device using water-swirling flow | |
| Liu et al. | Dynamics of slant cracked rotor for a steam turbine generator system | |
| Xu et al. | Numerical and experimental research on the fluid-induced forces of clearance flow in canned motor reactor coolant pump | |
| CN203705122U (en) | All condition mechanical sealing detection test device | |
| CN203743033U (en) | Nuclear reactor top draught fan performance testing device | |
| CN205958710U (en) | Test platform of hydroelectric generator performance | |
| CN103236218B (en) | Adjusting and testing experiment system and adjusting and testing method for power machinery | |
| CN202421461U (en) | Load performance test device for generator set | |
| Su et al. | Numerical and experimental investigations on the hydrodynamic performance of a tidal current turbine | |
| Żywica et al. | Dynamic state assessment of the water turbine with the power of 600 kW | |
| Dawson et al. | Measurements versus predictions for the dynamic impedance of annular gas seals—Part I: Test facility and apparatus | |
| CN205384140U (en) | Test device of wind -powered electricity generation gear box | |
| CN218180312U (en) | Model test bed for simulating water supply object of hydropower station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191018 Termination date: 20191227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |