CN205449499U - Be used for frequently opening fast and stop combined cycle steam turbine high -and medium -voltage cylinder life -span monitoring device - Google Patents
Be used for frequently opening fast and stop combined cycle steam turbine high -and medium -voltage cylinder life -span monitoring device Download PDFInfo
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- CN205449499U CN205449499U CN201521028583.5U CN201521028583U CN205449499U CN 205449499 U CN205449499 U CN 205449499U CN 201521028583 U CN201521028583 U CN 201521028583U CN 205449499 U CN205449499 U CN 205449499U
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- 238000012806 monitoring device Methods 0.000 title abstract 2
- 239000011888 foil Substances 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 abstract description 10
- 230000008447 perception Effects 0.000 abstract description 7
- 238000004364 calculation method Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 27
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000010205 computational analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
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Abstract
The utility model discloses a be used for frequently opening fast and stop combined cycle steam turbine high -and medium -voltage cylinder life -span monitoring device utilizes the change of meeting an emergency of foil gage perception high -and medium -voltage cylinder to the value of will meeting an emergency transmits the strainometer to and surveys, carries out record storage with the data record appearance, and life -span aassessment server carries out real -time processing to the measuring information of meeting an emergency, converts the force information that answers at the crucial position of high -and medium -voltage cylinder to. Utilize the change -only information of temperature sensor and pressure sensor perception high -and medium -voltage cylinder temperature and pressure to offer temperature field and stress field that life -span aassessment server carries out the real -time calculation high -and medium -voltage cylinder. Each the foil gage measurement of comprehensive high -and medium -voltage cylinder obtains distributing of stress and the digital computation obtains the stress field distribution to obtain frequently opening fast according to the creep life curve of high -and medium -voltage cylinder material and fatigue life curve and stop the real -time life -span consumption rate of combined cycle steam turbine high -and medium -voltage cylinder, and the high -and medium -voltage cylinder totality accumulation life -span consume the real time monitoring curve.
Description
Technical field:
This utility model relates to a kind of high pressure Cylinder Life supervising device, particularly to one for frequent rapid starting/stopping combination circulation steam turbine high pressure Cylinder Life supervising device.
Background technology:
High pressure cylinder is the vitals of steam turbine, for frequent start-stop combination circulation steam turbine, one of key technology of high pressure Cylinder Life administrative relationships unit safety and economy.Domestic Gas Turbine Combined-cycle regulating units, start and stop are frequent, affect the service life of Combined Cycle Unit.The reliability requirement of regulating units is higher, and the security requirement to the supporting relevant high pressure cylinder of unit is the highest.
Thermal stress is that because of metal temperatureization can not freely be stretched and the stress that produces, or the uneven stress making flexible restriction and produce of metal self-temperature.Owing to thermal stress is variations in temperature and produce, so also referred to as temperature stress or thermal (temperature difference) stress.During component working, its size will be stretched because of variations in temperature.If parts is flexible unrestricted, variations in temperature can only make it deform, and will not produce stress.If parts can not freely stretch, it will produce stress therein.Parts are when being heated or cool down, if each several part temperature is inconsistent, deformation will be restricted.The part elongation to be expanded that temperature is high, the part that temperature is low then limits its expansion, and result produces compressive stress at high temperature position, and low temperature position produces tension.
Along with steam turbine is constantly developed to high-power, high efficiency direction, intake air temperature, pressure are continuously increased, and safety and military service life requirements to high pressure cylinder also improve constantly.The method using numerical computations of steam turbine life-span management at present more, in real time few in actual set of service life supervision management system application, and conventional numeric error calculated is bigger, accuracy is the highest, need to be detected by the periodic inspection of actual set valve to be modified, it is impossible to reach the purpose monitored in real time.
Utility model content:
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, it is provided that a kind of for frequent rapid starting/stopping combination circulation steam turbine high pressure Cylinder Life supervising device.
For reaching above-mentioned purpose, this utility model adopts the following technical scheme that and is achieved:
For frequent rapid starting/stopping combination circulation steam turbine high pressure Cylinder Life supervising device, high pressure cylinder includes cylinder under high pressure cylinder upper cylinder half and high pressure cylinder, connect with cylinder bolt is fixing between cylinder up and down, be provided with middle extrusion steam pipe on high pressure cylinder upper cylinder half, be provided with on cylinder under high pressure cylinder high-pressure admission pipe, high pressure steam outlet pipe, in be pressed into steam pipe and steam supply pipe；Wherein,
Arranging multiple strain measuring point under high pressure cylinder upper cylinder half and high pressure cylinder on cylinder, each measuring point arranges the high temperature resistant foil gauge strain variation for each position of measurement in real time；
High-pressure admission pipe, high pressure steam outlet pipe, in be pressed on steam pipe, steam supply pipe and middle extrusion steam pipe punching mounting temperature sensor and pressure transducer, for measuring the temperature and pressure at each position in real time；Punch at dividing plates at different levels on high pressure cylinder mounting temperature sensor and pressure transducer, measures temperature and pressure at different levels in real time；
Each high temperature resistant foil gauge of high pressure cylinder uses lead-in wire to be connected with strain gauge respectively, and the temperature sensor of each measuring point connects thermometer, and the pressure transducer of each measuring point connects piezometer, and each drive test point data is all connected to multi-channel data monitor and stores；The data that multi-channel data monitor stores are sent to high pressure Cylinder Life monitoring system, carry out processing and showing in real time the strain variation at high pressure cylinder each position outside, strain variation rate, the variations in temperature at each position, pressure changes, and draws each position stress changing curve and intuitively represent.
This utility model is further improved by: use strand oscillator multichannel data is gone between layout arrange, check the number connect, prevent intersect entanglement, in order to check.
Relative to prior art, this utility model has the following technical effect that:
This utility model is used for frequent rapid starting/stopping combination circulation steam turbine high pressure Cylinder Life supervising device, utilize the strain of high temperature resistant foil gauge perception high pressure cylinder, temperature sensor and pressure transducer is utilized to measure the temperature and pressure of each key position of high pressure cylinder in real time, for the Stress Field Distribution of calculating high pressure cylinder block in real time.Measurement strain value is converted into stress by the material parameter according to high pressure cylinder, stress field in conjunction with the high pressure cylinder block calculated in real time, Fatigue Life Curve and curve creep life according to high pressure casing materials, obtain the real-time fatigue life consumption rate of high pressure cylinder and creep damage factor, the final overall life consumption curve in real time obtaining high pressure cylinder.
High pressure casing outer wall multiple location arranges high temperature resistant foil gauge, in real time monitoring high pressure casing outer wall stress distribution that can be fine, use foil gauge perception high pressure cylinder strain variation, simply, easily implement, it is not necessary to change high pressure cylinder reason structure, good reliability, accuracy is high, it is possible to provide strain variation information accurately for the assessment of high pressure Cylinder Life.
High pressure cylinder arranges multiple temperature and pressure measuring point, use temperature sensor and the variations in temperature of the multiple position of pressure transducer real-time perception high pressure cylinder and pressure change, temperature according to multiple measuring points and pressure data calculate high pressure cylinder temperature field and high pressure casing stress field in real time, and Dynamic Announce high pressure casing stress field changes.
Multi-channel data monitor ensure that storage data seriality, compare digital storage equipment more can reduce real continuous print strain, temperature and pressure information.Temperature sensor is fixedly mounted on high pressure cylinder, can monitor the variations in temperature of high pressure cylinder in real time, it is ensured that in shutdown process, the rate temperature change of high pressure cylinder is in safety range, improves start and stop safety.
In sum, this utility model is used for frequent rapid starting/stopping combination circulation steam turbine high pressure Cylinder Life supervising device, solve employing numerical method assessment high pressure Cylinder Life accuracy the highest, lack shutdown process before and monitor high pressure cylinder strain variation in real time, the problem of rate temperature change, provide a kind of method for monitoring high pressure Cylinder Life in real time, it is applicable to the monitoring of each steam turbine high pressure Cylinder Life, high pressure casing outer wall multiple position strain variation can be measured in real time, measure the multiple spot temperature of high pressure cylinder internal and pressure in real time, calculate high pressure casing stress field distribution in real time, dynamic real time data accurately is provided for the monitoring of frequent rapid starting/stopping combination circulation steam turbine high pressure Cylinder Life, to improve high pressure Cylinder Life monitoring accuracy.
Accompanying drawing illustrates:
Fig. 1 is high pressure Cylinder Life supervising device schematic diagram；
Fig. 2 is high pressure Cylinder Life supervising device schematic cross-section；
Fig. 3 is high pressure Cylinder Life supervising device A-A schematic diagram；
Fig. 4 is high pressure Cylinder Life supervising device section B-B schematic diagram；
Fig. 5 is high pressure Cylinder Life supervising device elevational schematic view；
Fig. 6 is high pressure Cylinder Life monitoring system schematic diagram；
Fig. 7 is high pressure Cylinder Life monitoring system topological diagram；
Fig. 8 is high pressure Cylinder Life monitoring system flow chart；
Fig. 9 is high pressure casing materials curve creep life；
Figure 10 is high pressure casing materials Fatigue Life Curve
Wherein: 1, high pressure cylinder；2, high pressure cylinder upper cylinder half；3, cylinder under high pressure cylinder；4, high-pressure admission pipe；5, high pressure steam outlet pipe；6, steam pipe it is pressed in；7, steam supply pipe；8, middle extrusion steam pipe；9, temperature sensor；10, pressure transducer；11, high temperature resistant foil gauge；12, high temperature resistant wire；13, strand oscillator；14, strain gauge；15, thermometer；16, piezometer；17, multi-channel data monitor；18, service life evaluation system；19, high intermediate pressure cylinder high-pressure section；20, high intermediate pressure cylinder intermediate pressure section；21, high intermediate pressure cylinder strain measuring point data；22, high intermediate pressure cylinder temperature, pressure measuring point data；23, each strain measuring point monitors curve in real time；24, respectively strain measuring point rate of change monitors curve in real time；25, high intermediate pressure cylinder key position stress distribution；26, each temperature point monitors curve in real time；27, each pressure-measuring-point monitors curve in real time；28, each temperature point rate of change monitor curve in real time；29, each pressure-measuring-point rate of change monitors curve in real time；30, high intermediate pressure cylinder temperature field；31, high intermediate pressure cylinder stress field；32, high intermediate pressure cylinder material creep life curve and Fatigue Life Curve；33, high intermediate pressure cylinder life consumption rate monitors in real time；34, high intermediate pressure cylinder overall life consumes monitoring in real time；35, service life supervision work station；36, life appraisal server；37, data base；38, Web server；39, user's internal lan；40, terminal browser.
Detailed description of the invention:
Below in conjunction with accompanying drawing, this utility model is described in further detail.
Seeing Fig. 1, this utility model is used for frequent rapid starting/stopping combination circulation steam turbine high pressure Cylinder Life supervising device, including high pressure cylinder 1, high-pressure admission pipe 4, high pressure steam outlet pipe 5, in be pressed into steam pipe 6, steam supply pipe 7, middle extrusion steam pipe 8.Cylinder 3 under wherein high pressure cylinder 1 is divided into high pressure cylinder upper cylinder half 2 and high pressure cylinder.High pressure cylinder 1 outer wall arranges multiple strain measuring point, and each measuring point arranges a high temperature resistant foil gauge 11, uses special fire resistant resin glue.Being connected with bifilar foil gauge lead-in wire 12 between foil gauge 11 with strain gauge 14, foil gauge goes between on 12 fixed and arranged high pressure cylinders 1.Thermometer, piezometer, strain gauge are connected with multi-channel data monitor 17, and multi-channel data monitor 17 is for longer-term storage each road signal data, it is simple to data readback is checked.Multi-channel data monitor 17 connects high pressure Cylinder Life monitoring system 18, for high pressure Cylinder Life real-time calculation and analysis.Use strand oscillator 13 multichannel data is gone between 12 layouts arrange, check the number connect, prevent intersect entanglement, in order to check.
See Fig. 2, punch on high-pressure admission pipe 4 and high pressure steam outlet pipe 5 respectively, and in hole, fixedly mount temperature sensor 9 and pressure transducer 10, for monitoring high-pressure admission pipe 4 and high pressure steam outlet pipe 5 internal temperature and pressure, use lead-in wire 12 that each temperature sensor 9 is connected to thermometer 15, use lead-in wire 12 that each pressure transducer 10 is connected to piezometer 16.Punch at the dividing plates at different levels of high pressure cylinder high-pressure section 19 and intermediate pressure section 20 mounting temperature sensor 9 and pressure transducer 10, measure high pressure temperature and pressure at different levels in real time, each temperature sensor and pressure transducer high temperature resistant wire are connected to thermometer and piezometer.Use strand oscillator 13 multichannel is gone between 12 layouts arrange, check the number connect, prevent intersect entanglement, in order to check.
See Fig. 3,4,5, under high pressure cylinder, cylinder 3 arranges a high-pressure admission pipe 4 that Open Side Down, two high pressure steam outlet pipes 5 that Open Side Down, being pressed into steam pipe 6 in two, being pressed into steam pipe in two is 90 ° of bend pipes, and opening is towards the outside of central shaft, along layout substantially symmetrical about its central axis, one steam supply pipe that Open Side Down 7, high pressure cylinder upper cylinder half 2 arranges the middle extrusion steam pipe 8 of an opening upwards, middle extrusion steam pipe caliber.
Seeing Fig. 6, high pressure Cylinder Life monitoring system 18 is divided into and is respectively strained measuring point data 21, high pressure cylinder each temperature and pressure measuring point data 22 by high pressure cylinder.Respectively strained measuring point data by high pressure cylinder and obtain real-time strain curve 23 and the real-time curve 24 of each strain measuring point rate of change of each strain measuring point, be distributed 25 further combined with high pressure casing materials gain of parameter high pressure casing stress.
By each temperature point of high pressure cylinder and pressure-measuring-point data 22, obtain the temperature of each measuring point and monitor curve 26 in real time and pressure monitors curve 27 in real time, obtain rate of temperature change further and monitor curve 28 in real time and pressure change rate monitors curve 29 in real time.The temperature, pressure being obtained each measuring point by monitoring is calculated high pressure cylinder temperature field distribution 30 and high pressure casing stress field distribution 31 as boundary condition, employing Finite Element Method.
Air cylinder each foil gauge measurement in comprehensive high middle-school's obtains stress distribution 25 and is calculated Stress Field Distribution 31 by Finite Element Method further, and the creep curve and fatigue curve 32 according to high pressure casing materials obtains the life consumption rate 33 that frequent rapid starting/stopping combination circulation steam turbine high pressure cylinder is real-time, and high pressure cylinder overall aggregate life consumption monitors curve 34 in real time.
Seeing Fig. 7, high pressure Cylinder Life monitor workstation 35 includes Life Calculation evaluating server 36, data base 37 and Web server 38.Life Calculation evaluating server 39 gathers data from multi-channel data monitor 17 and carries out computational analysis, then certain format is installed and stores data base 37, data in Web server 38 reading database 37, and be supplied to each terminal browser 40 conduct interviews by user's LAN 39.
See Fig. 8, high pressure Cylinder Life monitoring system flow process.The content that this part is introduced with Fig. 6 is identical.
Participating in Fig. 9, abscissa is stress value, and vertical coordinate is the functional expression of operation time, and HV is material hardness.
Participating in Figure 10, abscissa is Life Cycle number of times, and vertical coordinate is stress value.
For understanding further to this utility model, now its work process is explained as follows.
During work, utilize the strain variation of foil gauge 11 perception high pressure cylinder 1 outer wall, and strain value is transferred to strain gauge 14 is observed, record storage is carried out with data logger 17, the strain information measured is processed by life appraisal server 36 in real time, is converted into the stress information of high pressure cylinder 1 key position.Utilize temperature sensor 9 and the change information of pressure transducer 10 perception high pressure cylinder 1 temperature and pressure, and be supplied to life appraisal server 36 and calculate temperature field and the stress field of high pressure cylinder 1 in real time.Air cylinder each foil gauge measurement in comprehensive high middle-school's obtains stress distribution 25 and is calculated Stress Field Distribution 31, and the creep curve and fatigue curve 32 according to high pressure casing materials obtains the life consumption rate 33 that frequent rapid starting/stopping combination circulation steam turbine high pressure cylinder is real-time, and high pressure cylinder overall aggregate life consumption monitors curve 34 in real time.Data after life appraisal server 36 processes store data base 37, and are supplied to web server 38, by LAN 39, conduct interviews for user browser 40.
Claims (2)
1. for frequent rapid starting/stopping combination circulation steam turbine high pressure Cylinder Life supervising device, it is characterized in that, high pressure cylinder (1) includes cylinder (3) under high pressure cylinder upper cylinder half (2) and high pressure cylinder, connect with cylinder bolt is fixing between cylinder up and down, be provided with middle extrusion steam pipe (8) in high pressure cylinder upper cylinder half (2), be provided with on cylinder (3) under high pressure cylinder high-pressure admission pipe (4), high pressure steam outlet pipe (5), in be pressed into steam pipe (6) and steam supply pipe (7)；Wherein,
Arranging multiple strain measuring point under high pressure cylinder upper cylinder half (2) and high pressure cylinder on cylinder (3), each measuring point arranges a high temperature resistant foil gauge (11) for this position strain variation of measurement in real time；
High-pressure admission pipe (3), high pressure steam outlet pipe (4), in be pressed into the upper punching of steam pipe (5), steam supply pipe (6) and middle extrusion steam pipe (7) and the temperature sensor (8) for measuring this spot temperature in real time be installed and for measuring the pressure transducer (9) of this site pressure in real time；At the upper dividing plates at different levels of high pressure cylinder (1), the temperature sensor (9) being used for measuring temperature at different levels in real time and the pressure transducer (10) for each stage pressure of measurement in real time are installed in punching；
Each high temperature resistant foil gauge (11) of high pressure cylinder (1) uses lead-in wire (12) to be connected with strain gauge (14) respectively, the temperature sensor (9) of each measuring point connects thermometer (15), the pressure transducer (10) of each measuring point connects piezometer (16), and each drive test point data is all connected to multi-channel data monitor (17) and stores.
The most according to claim 1 for frequent rapid starting/stopping combination circulation steam turbine high pressure Cylinder Life supervising device, it is characterised in that to use strand oscillator (13) multichannel data lead-in wire (12) layout to be arranged, check the number and connect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521028583.5U CN205449499U (en) | 2015-12-10 | 2015-12-10 | Be used for frequently opening fast and stop combined cycle steam turbine high -and medium -voltage cylinder life -span monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521028583.5U CN205449499U (en) | 2015-12-10 | 2015-12-10 | Be used for frequently opening fast and stop combined cycle steam turbine high -and medium -voltage cylinder life -span monitoring device |
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| Publication Number | Publication Date |
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| CN205449499U true CN205449499U (en) | 2016-08-10 |
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| CN201521028583.5U Active CN205449499U (en) | 2015-12-10 | 2015-12-10 | Be used for frequently opening fast and stop combined cycle steam turbine high -and medium -voltage cylinder life -span monitoring device |
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