CN205262747U - Be used for frequently opening fast and stop combined cycle steam turbine stop valve shell life -span monitoring device - Google Patents
Be used for frequently opening fast and stop combined cycle steam turbine stop valve shell life -span monitoring device Download PDFInfo
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- CN205262747U CN205262747U CN201521027096.7U CN201521027096U CN205262747U CN 205262747 U CN205262747 U CN 205262747U CN 201521027096 U CN201521027096 U CN 201521027096U CN 205262747 U CN205262747 U CN 205262747U
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 239000011888 foil Substances 0.000 claims abstract description 28
- 210000002445 nipple Anatomy 0.000 claims description 41
- 238000013459 approach Methods 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims 1
- 239000011257 shell material Substances 0.000 abstract description 106
- 238000012544 monitoring process Methods 0.000 abstract description 12
- 230000008447 perception Effects 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000004364 calculation method Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 22
- 238000000034 method Methods 0.000 description 10
- 230000002209 hydrophobic effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010205 computational analysis Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid 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 stop valve shell life -span monitoring device utilizes the change of meeting an emergency of foil gage perception stop valve shell outer wall to the value of will meeting an emergency transmits the strainometer to and surveys, carries out record storage with the data record appearance. The utility model discloses utilize the change -only information of temperature sensor and pressure sensor perception stop valve shell temperature and pressure to offer temperature field and stress field that life -span aassessment server carries out real -time calculation stop valve shell. Each the foil gage measurement of comprehensive stop valve shell obtains distributing of stress and calculation obtains the stress field distribution to obtain frequently opening fast according to the creep curve of stop valve shell material and fatigue curve and stop the real -time life -span consumption rate of combined cycle steam turbine stop valve shell, and the stop valve shell totality accumulation life -span consume the real time monitoring curve.
Description
Technical field:
The utility model relates to a kind of stop valve shell life monitoring device, particularly a kind of for fast frequentStart and stop combination circulation steam turbine stop valve shell life monitoring device.
Background technology:
Stop valve is the vitals of steam turbine, is the important switch of controlling steam turbine admission. For frequently openingStop combination circulation steam turbine, stop valve shell life-span management be related to unit safety and economy key technology itOne. Domestic Gas Turbine Combined-cycle peak regulation unit, start and stop are frequent, affect the military service longevity of Combined Cycle UnitLife. The reliability requirement of peak regulation unit is higher, also higher to the security requirement of the supporting related valve of unit.
Because of metal temperatureization can not free-extension and the stress that produces, or inhomogeneous the making of metal self-temperature stretchedThe stress being restricted and produce, is called thermal stress. Because thermal stress is that variations in temperature produces, so alsoClaim temperature stress or thermal (temperature difference) stress. When component working, its size will be stretched because of variations in temperature. If partsFlexible unrestricted, variations in temperature can only make its distortion, and unlikely generation stress. If parts can notFree-extension, will produce stress therein. Parts are being heated or when cooling, if each several part temperature differsCause, distortion will be restricted. The part that temperature the is high elongation of will expanding, the part that temperature is low limits its expansion,Result produces compression at high temperature position. Low temperature position produces tension.
Along with steam turbine is constantly to high-power, high efficiency future development, intake air temperature, pressure constantly increase,Security to stop valve and military service life requirements also improve constantly. The numbers that adopt of steam turbine life-span management at present moreThe method that value is calculated, in real time few in actual set of service life supervision management system application, and traditional numberValue error calculated larger, accuracy is not high, need to by the periodic inspection of actual set valve detect intoRow is revised, and can not reach the object of real-time monitoring.
Utility model content:
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provides a kind of for frequent fastSpeed start and stop combination circulation steam turbine stop valve shell life monitoring device.
For achieving the above object, the utility model adopts following technical scheme to be achieved:
A kind of for frequent rapid starting/stopping combination circulation steam turbine stop valve shell life monitoring device, stop valve bagDraw together stop valve shell, be arranged on the stop valve lid of stop valve shell top, be arranged on stop valve by valve seat and valve settingValve rod in shell, be welded on main steam admission nipple, main steam on stop valve shell side wall go out vapour nipple,Water-supply-pipe and valve rod gas leakage nipple after the front drain pipe of valve seat, valve seat, and by connecting packing pipeline and valveThe anti-Check valve that bar gas leakage nipple is connected; Wherein,
Main steam admission nipple, main steam go out after drain pipe before vapour nipple, valve seat, valve seat water-supply-pipe withAnd be provided with temperature sensor and pressure sensor, stop valve shell, main steam admission on connection packing pipelineNipple and main steam go out on vapour nipple to be provided with high temperature resistant foil gauge, and multiple temperature sensors pass throughMultichannel temperature meter is connected with the input of multi-channel data recorder, and multiple pressure sensors pass through multichannelInstrument for Pressure is connected with the input of multi-channel data recorder, and multiple high temperature resistant foil gauges are by multichannel strainMeter is connected with the input of multi-channel data recorder, the output of multi-channel data recorder and stop valve shellThe input of service life supervision system is connected.
The utility model further improves and is, stop valve lid is arranged on stop valve shell by valve gap boltTop.
The utility model further improves and is, main steam admission nipple is welded on stop valve shell side wallThe first half, main steam goes out vapour nipple and is welded on the latter half of stop valve shell opposite side sidewall.
The utility model further improves and is, approaches main steam admission nipple on stop valve shell outer wallNear high temperature resistant foil gauge is set, for measuring in real time the strain at this position; On stop valve shell outer wall, connectNear that nearly main steam goes out vapour nipple arranges high temperature resistant foil gauge, for measuring in real time the strain at this position;Approach valve seat on stop valve shell outer wall before, near of drain pipe arranges high temperature resistant foil gauge, for real-time measurementThe strain at this position; Approach valve seat on stop valve shell outer wall after, near of drain pipe arranges high temperature resistant foil gauge,For measuring in real time the strain at this position.
The utility model further improves and is, circumferentially uniformly in stop valve shell bottom four valve rods are set leakBreathing hard to take over is connected packing pipeline with four, approaches near of valve rod gas leakage nipple on stop valve shell outer wallHigh temperature resistant foil gauge is set, for measuring in real time the strain at this position.
The utility model further improves and is, each the high temperature resistant foil gauge on stop valve shell adopts resistance to heightTemperature wire is connected with multichannel strain gauge respectively.
With respect to prior art, the utlity model has following technique effect:
The utility model is a kind of for frequent rapid starting/stopping combination circulation steam turbine stop valve shell service life supervision dressPut, utilize the strain of high temperature resistant foil gauge perception stop valve shell outside, utilize temperature sensor and pressure sensingDevice is measured the temperature and pressure of the each key position of stop valve shell in real time, for calculating in real time answering of stop valve housingForce distribution. According to the elastic modelling quantity of the material of stop valve shell, monitor strain value is converted into stress, in conjunction with realTime the stress field of stop valve housing calculated, according to the curve of fatigue and the creep curve of stop valve shell material, obtainObtain real-time fatigue life consumption rate and the creep damage factor of stop valve shell, finally obtain the overall of stop valveLife consumption curve in real time.
Stop valve shell outer wall multiple location arranges high temperature resistant foil gauge, outside real-time monitoring stop valve shell that can be meticulousPortion's Strain Distribution situation, adopts foil gauge perception stop valve shell strain variation, simple, easily implements, without changingBecome stop valve shell reason structure, good reliability, accuracy is high, can provide accurate for stop valve shell life appraisalTrue strain variation information.
Stop valve shell arranges multiple temperature and pressure measuring points, adopts temperature sensor and pressure sensor to feel in real timeVariations in temperature and the pressure of knowing the multiple positions of stop valve shell change, according to the temperature of multiple measuring points and pressure dataTemperature field and the stress field of calculating in real time stop valve shell, dynamically show the variation of stop valve shell stress field.
Multi-channel data recorder can ensure to store the continuity of data, and comparing digital storage equipment more can be alsoFormer real continuous strain, temperature and pressure information. Temperature sensor is fixedly mounted on stop valve shell,Can monitor in real time the variations in temperature of stop valve shell, ensure that the rate temperature change of stop valve shell in shutdown process existsIn safe range, improve start and stop security.
In sum, the utility model is a kind of for the frequent rapid starting/stopping combination circulation steam turbine stop valve shell longevityLife supervising device, has solved employing numerical method assessment stop valve shell life-span accuracy not high, lacks and opens beforeStop real-time process monitoring stop valve strain variation, the problem of rate temperature change, provides a kind of in real timeThe method in monitoring stop valve shell life-span, is applicable to each Steam Turbine's Main Vaper Valve shell service life supervision, can measure in real timeThe multiple positions of stop valve shell outer wall strain variation, measures the inner multiple positions of stop valve shell temperature and pressure in real time,Calculating in real time stop valve shell Stress Field Distribution, is the frequent rapid starting/stopping combination circulation steam turbine stop valve shell longevityLife monitoring provides dynamically accurate data in real time, to improve stop valve shell service life supervision accuracy.
Brief description of the drawings:
Fig. 1 is stop valve shell life monitoring device A-A schematic cross-section;
Fig. 2 is stop valve shell life monitoring device elevational schematic view;
Fig. 3 is stop valve shell life monitoring device front elevational schematic;
Fig. 4 is stop valve shell life monitoring device B-B schematic cross-section;
Fig. 5 is stop valve shell life monitoring device C-C schematic cross-section;
Fig. 6 is stop valve shell service life supervision system schematic;
Fig. 7 is stop valve shell service life supervision system topological figure;
Fig. 8 is stop valve shell service life supervision system flow chart;
Fig. 9 is stop valve shell material curve creep life;
Figure 10 is stop valve shell material Fatigue Life Curve.
Wherein: 1, stop valve shell; 2, stop valve lid; 3, valve gap bolt; 4, valve rod; 5, admission short circuitPipe; 6, go out vapour nipple; 7, valve seat; 8, valve setting; 9, temperature sensor; 10, pressure sensor;11, high temperature resistant foil gauge; 12, high temperature resistant wire; 13, bolt; 14, pressure gauge; 15, strain gauge;16, thermometer; 17, multi-channel data recorder; 18, service life evaluation system; 19, drain pipe before valve seat;20, drain pipe after valve seat; 21, valve rod gas leakage nipple; 22, stop valve shell support; 23, stop valve shellSupport lacing wire; 24, connect packing pipeline; 25, anti-Check valve; 26, stop valve shell strain measuring point data;27, stop valve shell temperature, pressure measuring point data; 28, each strain measuring point is monitored curve in real time; 29, each strainThe real-time monitoring curve of measuring point rate of change; 30, stop valve shell key position stress distribution; 31, each temperature is surveyedPoint is monitoring curve in real time; 32, each pressure-measuring-point is monitored curve in real time; 33, the reality of each temperature point rate of changeTime monitor curve; 34, each pressure-measuring-point rate of change is monitored curve in real time; 35, stop valve shell temperature field; 36,Stop valve shell stress field; 37, stop valve shell material creep curve and the curve of fatigue; 38, the stop valve shell life-spanConsumption rate is monitored in real time; 39, the consumption of stop valve shell overall life is monitored in real time; 40, service life supervision work station;41, life appraisal server; 42, database; 43, Web server; 44, user's internal lan;45, terminal browser.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Referring to Fig. 1, the utility model is a kind of for the frequent rapid starting/stopping combination circulation steam turbine stop valve shell life-spanSupervising device, comprises stop valve shell 1, valve gap 2, and valve gap bolt 3, valve rod 4, and be welded on stop valveAdmission nipple on shell 5 and go out vapour nipple 6. Respectively at admission nipple 5 with go out on vapour nipple 6 to beatHole, and in hole, fixedly mount temperature sensor 9 and pressure sensor 10, for monitoring admission nipple 5With go out vapour nipple 6 internal temperatures and pressure, each temperature sensor 9 use high temperature resistant wires 12 are connected to temperatureMeter 16, each pressure sensor 10 use high temperature resistant wires are connected to pressure gauge 14. The 1 outer wall setting of stop valve shellMultiple strain measuring points, each measuring point arranges a foil gauge 11, adopts special fire resistant resin glue. ShouldBecome between sheet 11 and strain gauge 15 with bifilar foil gauge and go between and 12 be connected, foil gauge 12 fixed and arranged that go betweenOn stop valve shell 1. Thermometer, pressure gauge, strain gauge are connected with multi-channel data recorder, multichannel number, be convenient to data readback and check for the each road of longer-term storage signal data according to recorder 17. Multi-channel data recordInstrument 17 connects stop valve shell service life supervision system 18, for stop valve shell life-span real-time calculation and analysis.
Referring to Fig. 2,3, stop valve shell 1 outer wall profile is octagon, the support weldering of two of stop valve shell left and rightBe connected on stop valve along on outer wall, adopt respectively two pass lacing wire reinforcement of weld, install for stop valve. Main vapourUniform four valve rods gas leakage of valve casing bottom outer wall nipple.
Referring to Fig. 4, before valve seat, after hydrophobic nipple 19 and valve seat, hydrophobic nipple 20 is welded on respectively stop valveThe same side of shell 1 outer wall, punching respectively on hydrophobic nipple 20 after hydrophobic nipple 19 and valve seat before valve seat,And fixedly mount temperature sensor 9 and pressure sensor 10, for monitoring hydrophobic nipple 19 and valve before valve seatHydrophobic nipple 20 internal temperatures and pressure after seat. Temperature sensor 9 is connected respectively with pressure sensor 10Thermometer 16 and pressure gauge 14.
Referring to Fig. 5, valve rod gas leakage nipple 21 connects packing tube connector 24, then connects anti-Check valve 25,On valve rod gas leakage nipple 21, punch and fixedly mount temperature sensor 9 and pressure sensor 10, for monitoringThe temperature and pressure of valve rod gas leakage nipple 21 inside. Temperature sensor 9 and pressure sensor 10 connect respectivelyJointing temp meter 16 and pressure gauge 14.
Referring to Fig. 6, stop valve shell service life supervision system 18 is divided into by the each strain measuring point of stop valve shell outer surface numberAccording to 26, temperature and pressure measuring point data. Obtain each strain by the each strain measuring point data of stop valve shell 1 outer surfaceThe real-time curve 29 of the real-time strain curve 28 of measuring point and each strain measuring point rate of change, and then in conjunction with stop valve shellElasticity modulus of materials converts and obtains stop valve shell key position stress distribution 30.
By the each temperature point of stop valve shell and pressure-measuring-point data 27, the temperature that obtains each measuring point is monitored song in real timeLine 31 and pressure are monitored curve 32 in real time, further obtain rate of temperature change and monitor in real time curve 33 and pressureRate of change is monitored curve 34 in real time. The temperature, pressure that obtains each measuring point by monitoring is as boundary condition, and employing hasLimit first method to calculate temperature field distribution 35 and the Stress Field Distribution 36 of stop valve shell solid domain.
The further comprehensive each foil gauge of stop valve shell measures stop valve shell key position stress distribution 30 and usesFinite Element Method calculates stop valve shell stress field 36, and according to the creep curve of stop valve shell material and tiredLabor curve 37 obtains the real-time life consumption rate 38 of frequent rapid starting/stopping combination circulation steam turbine stop valve shell, withAnd the overall accumulation life consumption of stop valve shell is monitored curve 39 in real time.
Referring to Fig. 7, stop valve shell service life supervision work station 40 comprises life-span calculating evaluating server 41, dataStorehouse 42 and Web server 43. Life-span calculates evaluating server 41 and gathers from multi-channel data recorder 17Data are also carried out computational analysis, then certain format is installed and stores database 42 into, and Web server 43 readsThe data that database is 42 li, and offer each terminal browser 45 by user's LAN 44 and conduct interviews.
Referring to Fig. 8, stop valve Cylinder Life monitoring system flow process. This part is identical with the content that Fig. 6 introduces.
Participate in Fig. 9, abscissa is stress value, the functional expression that ordinate is running time, and HV is material hardness.
Participate in Figure 10, abscissa is Life Cycle number of times, and ordinate is stress value.
For the utility model is further understood, now its course of work is explained as follows.
When work, utilize the strain variation of foil gauge 11 perception stop valve shells 1, and strain value is transferred to and is answeredBecome meter and 15 observe, record storage, life appraisal server 41 with multi-channel data recorder 17The strain information of measuring is processed in real time, converted to the stress information of stop valve shell 1 key position. ProfitWith the change information of temperature sensor 9 and pressure sensor 10 perception stop valve shell 1 temperature and pressures, and carrySupply with temperature field and stress field that life appraisal server 41 calculates stop valve shell 1 in real time. Comprehensive main vapourThe each foil gauge of valve casing measures stop valve shell key position stress distribution 30 and calculates stop valve shell stress36, and obtain frequent rapid starting/stopping according to the creep curve of stop valve shell material and the curve of fatigue 37 and combine and followThe real-time life consumption rate 38 of ring Steam Turbine's Main Vaper Valve shell, and the overall accumulation life consumption of stop valve shell is real-timeMonitoring curve 39. Data after life appraisal server process store database 42 into, and offer web clothesBusiness device 43, by LAN 44, conducts interviews for user browser 45.
Claims (6)
1. for a frequent rapid starting/stopping combination circulation steam turbine stop valve shell life monitoring device, its featureBe, stop valve comprises stop valve shell (1), is arranged on the stop valve lid (2) of stop valve shell (1) top,Be arranged on the valve rod (4) in stop valve shell (1) by valve seat (7) and valve setting (8), be welded on main vapourMain steam admission nipple (5), main steam on valve casing (1) sidewall go out before vapour nipple (6), valve seatWater-supply-pipe (20) and valve rod gas leakage nipple (21) after drain pipe (19), valve seat, and by connectingThe anti-Check valve (25) that packing pipeline (24) is connected with valve rod gas leakage nipple (21); Wherein,
Main steam admission nipple (5), main steam go out drain pipe (19) before vapour nipple (6), valve seat,On water-supply-pipe after valve seat (20) and connection packing pipeline (24), be provided with temperature sensor (9) and pressPower sensor (10), it is short that stop valve shell (1), main steam admission nipple (5) and main steam go out vapourTake on (6) and be provided with high temperature resistant foil gauge (11), multiple temperature sensors (9) pass through multichannelThermometer (16) is connected with the input of multi-channel data recorder (17), multiple pressure sensors (10)Be connected with the input of multi-channel data recorder (17) by multi-path pressure instrument (14), multiple resistance to heightTemperature foil gauge (11) is the input with multi-channel data recorder (17) by multichannel strain gauge (15)Be connected.
2. one according to claim 1 is for frequent rapid starting/stopping combination circulation steam turbine stop valve shellLife monitoring device, is characterized in that, stop valve lid (2) is arranged on stop valve by valve gap bolt (3)The top of shell (1).
3. one according to claim 1 is for frequent rapid starting/stopping combination circulation steam turbine stop valve shellLife monitoring device, is characterized in that, main steam admission nipple (5) is welded on stop valve shell (1) sideThe first half of wall, main steam goes out vapour nipple welding (6) and is welded on stop valve shell (1) opposite side sidewallThe latter half.
4. one according to claim 1 is for frequent rapid starting/stopping combination circulation steam turbine stop valve shellLife monitoring device, is characterized in that, on stop valve shell (1) outer wall, approaches main steam admission nipple (5)Near high temperature resistant foil gauge (11) is set, for measuring in real time the strain at this position; In stop valve shell (1)On outer wall, approach near that main steam goes out vapour nipple (6) high temperature resistant foil gauge (1) is set, in real timeMeasure the strain at this position; Approach valve seat on stop valve shell (1) outer wall before, establish near of drain pipe (19)Put high temperature resistant foil gauge (11), for measuring in real time the strain at this position; On stop valve shell (1) outer wallApproach near of drain pipe (20) after valve seat high temperature resistant foil gauge (11) is set, for measuring in real time this portionThe strain of position.
5. one according to claim 1 is for frequent rapid starting/stopping combination circulation steam turbine stop valve shellLife monitoring device, is characterized in that, circumferentially uniform in stop valve shell (1) bottom four valve rods gas leakage is setNipple (21) is connected packing pipeline (24) with four, approach valve rod and leak on stop valve shell (1) outer wallNear breathe hard of adapter (21) arranges high temperature resistant foil gauge (1), for measuring in real time the strain at this position.
6. one according to claim 1 is for frequent rapid starting/stopping combination circulation steam turbine stop valve shellLife monitoring device, is characterized in that: each the high temperature resistant foil gauge (1) on stop valve shell (1) adoptsHigh temperature resistant wire (12) is connected with multichannel strain gauge (15) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027096.7U CN205262747U (en) | 2015-12-10 | 2015-12-10 | Be used for frequently opening fast and stop combined cycle steam turbine stop valve shell life -span monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027096.7U CN205262747U (en) | 2015-12-10 | 2015-12-10 | Be used for frequently opening fast and stop combined cycle steam turbine stop valve shell life -span monitoring device |
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| CN205262747U true CN205262747U (en) | 2016-05-25 |
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| CN201521027096.7U Active CN205262747U (en) | 2015-12-10 | 2015-12-10 | Be used for frequently opening fast and stop combined cycle steam turbine stop valve shell life -span monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324525A (en) * | 2020-10-28 | 2021-02-05 | 西安热工研究院有限公司 | Service life assessment and management device for high-medium pressure rotor of combined cycle steam turbine |
-
2015
- 2015-12-10 CN CN201521027096.7U patent/CN205262747U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324525A (en) * | 2020-10-28 | 2021-02-05 | 西安热工研究院有限公司 | Service life assessment and management device for high-medium pressure rotor of combined cycle steam turbine |
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