CN207248717U - A kind of superheater reheater scale spallation Tachistoscope device - Google Patents
A kind of superheater reheater scale spallation Tachistoscope device Download PDFInfo
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- CN207248717U CN207248717U CN201721206028.6U CN201721206028U CN207248717U CN 207248717 U CN207248717 U CN 207248717U CN 201721206028 U CN201721206028 U CN 201721206028U CN 207248717 U CN207248717 U CN 207248717U
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- sample pipe
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- temperature transducer
- oxide skin
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Abstract
A kind of superheater reheater scale spallation Tachistoscope device of the utility model, quantitative analysis and judgement that can be to the degree of coming off provide support.It includes detection components, steam generation component, cooling component and control assembly；The sample pipe lower carriage and sample pipe upper bracket that the detection components include oxide skin collecting pipe, are separately positioned on detected sample pipe lower end and upper end；Oxide skin collecting pipe upper end is provided with sample pipe lower carriage；Air outlet pipe is provided with sample pipe upper bracket；Detected sample pipe is fixedly installed by sample pipe upper bracket and sample pipe lower carriage, and oxide skin collecting pipe, sample pipe lower carriage, detected sample pipe and sample pipe upper bracket are in turn connected to form steam passage；The steam generation component heats detected sample pipe for being passed through vapor into detected sample pipe by oxide skin collecting pipe；The cooling component is used to cool down detected sample pipe；The control assembly is used to control cooling component and steam generation component.
Description
Technical field
The analysis test that superheater reheater oxide skin comes off is the utility model is related to, is specially a kind of superheater reheater
Scale spallation Tachistoscope device.
Background technology
Superheater reheater oxide skin come off block pipeline occur booster be to cause current thermal power generator is unplanned to stop
One of the main reason for machine, and influence the generating efficiency of unit.
It is overcritical it is efficient with ultra supercritical unit, specific energy consumption is low, good environmental protection, to it is energy-saving have it is existing
Sincere justice.But in its operational process, the Fe-Cr-Ni alloy steam oxidations such as boiler superheater and reheater do not only result in tube wall
Thickness is thinned, and influences heat transfer, raises tube wall temperature；Oxide skin, which comes off, when serious may block heat exchanger tube, trigger overtemperature
Booster；Oxide skin particle brings steam turbine into and solid particle erosion (SPE) occurs, and causes turbine blade to wear, and reduces stage efficiency.
For a long time, steam does not solve the problem of oxidation of jet chimney effectively always under thermal extremes hyperbaric environment, is puzzlement
One of and threaten the significant problem of power plant unit safety.
At present, it is mainly with the relevant test content of superheater reheater oxide skin：Component, thickness and oxidation scurf amount.
Wherein the test of thickness cuts probe tube by metallographic microscope or electron microscope observation and measures, and oxidation scurf amount passes through
Tube rolling method or acid wash test.The result of measure is used to judge whether oxide skin reaches the degree for needing chemical cleaning, and
Whether may come off, influence the safe and stable operation of unit.But due to the superheater reheater piping of unlike material, its inner wall
The adhesive force of the oxide skin of Surface Creation is different, and above-mentioned test result is mainly accumulation and the experience in quality of long-term operation data
Judgement, lack quantitative Appreciation gist.
Utility model content
For problems of the prior art, the utility model provides a kind of superheater reheater scale spallation degree
Test device, test is simple accurate, easy to operate, and quantitative analysis and judgement that can be to the degree of coming off provide support.
The utility model is to be achieved through the following technical solutions：
A kind of device of superheater reheater scale spallation Tachistoscope, including it is detection components, steam generation component, cold
But component and control assembly；
The detection components include oxide skin collecting pipe, are separately positioned under the sample pipe of detected sample pipe lower end and upper end and prop up
Frame and sample pipe upper bracket；Oxide skin collecting pipe upper end is provided with sample pipe lower carriage；Air outlet pipe is provided with sample pipe upper bracket；It is tested
Sample pipe is fixedly installed by sample pipe upper bracket and sample pipe lower carriage, oxide skin collecting pipe, sample pipe lower carriage, detected sample pipe and sample pipe
Upper bracket is in turn connected to form steam passage；
The steam generation component is used to be passed through vapor into detected sample pipe to detected sample by oxide skin collecting pipe
Pipe is heated；
The cooling component is used to cool down detected sample pipe；
The control assembly is used to control cooling component and steam generation component.
Preferably, the cooling component includes cooling chamber and sequentially connected refrigeration machine, air blower and gas pipe；Set
It is used to air being uniformly sent into cooling chamber cooling down indoor gas pipe.
Preferably, the steam generation component adds including pure water water tank, water heater, water temperature temperature transducer, steam
Hot device and steam pipe；Water heater and water temperature temperature transducer are separately positioned in pure water water tank；Pure water water tank, steam heater
It is sequentially connected with steam pipe, steam pipe is connected with oxide skin collecting pipe.
Preferably, the control assembly includes before sample pipe steam temperature transducer after steam temperature transducer, sample pipe, cold
But room temperature transducer, programmable controller and host computer；
Steam temperature transducer is installed in the air outlet pipe of sample pipe upper bracket after the sample pipe, the cooling chamber thermometric
Sensor is installed on the outer space between cooling chamber of detected sample pipe；Steam temperature transducer is installed on steam before the sample pipe
After heater；
Steam temperature transducer and cooling after steam temperature transducer, sample pipe before the water temperature temperature transducer, sample pipe
The output terminal of room temperature transducer is sequentially connected programmable controller and host computer, host computer be used to showing steam generation component,
Steam temperature transducer before the operating status of steam heating component, steam cooling component, and water temperature temperature transducer, sample pipe,
Steam temperature transducer and cooling chamber temperature transducer signal intensity after sample pipe.
Preferably, during described control assembly control steam generation component heating, the power plant that is adopted as where detected sample pipe
The heating curve taken during unit starting.
Preferably, during the cooling of control assembly control cooling component, stopped using the Power Plant where detected sample pipe
The temperature lowering curve taken during machine.
Compared with prior art, the utility model has technique effect beneficial below：
A kind of device of superheater reheater scale spallation Tachistoscope of the utility model, is realized true to detected sample pipe
The simulation of working environment, ensure that the reduction of detected sample pipe working environment, by detected sample pipe by the operation of high-temperature steam
Interior steam and the indoor temperature control of cooling, are realized the control heated and cooled down to steam, are realized using control assembly to temperature
The feedback and control in real time of degree and working environment control, can be that quantitative analysis and calculating carry so as to meet test requirements document
For reliable and stable support.Test result is enabled more accurately to reflect the peeling degree of superheater reheater oxide skin.
Further, by the steam generation component of setting, can easily be controlled by water heater and steam heater
The flow and temperature of steam processed, realize the real simulation to environment.
Further, by being arranged on the sensor of correspondence position, coordinate with control assembly, complete to heating and cooling down
Feedback control is adjusted, convenient and reliable.
Further, by using the actual work temperature and start-up and shut-down control curve and number of Power Plant where detected sample pipe
Accurately controlled according to detected sample pipe, accurate control is provided for the quantitative assessment under true environment.
Brief description of the drawings
Fig. 1 is a kind of superheater reheater scale spallation Tachistoscope device application method described in the utility model
Flow chart.
Fig. 2 is a kind of schematic diagram of superheater reheater scale spallation Tachistoscope device described in the utility model.
In figure：1- pure water water tanks；2- water heaters；3- water temperature temperature transducers；4- air escape cockes；5- steam heaters；
Steam temperature transducer before 6- sample pipes；7- oxide skin collecting pipes；8- sample pipe lower carriages；9- detected sample pipes；10- sample pipe upper brackets；
Steam temperature transducer after 11- sample pipes；12- refrigeration machines；13- air blowers；14- gas pipes；15- cooling chamber temperature transducers；
16- cooling chambers.
Embodiment
The utility model is described in further detail with reference to specific embodiment, described is to the utility model
Explanation rather than restriction.
A kind of device of superheater reheater scale spallation Tachistoscope of the utility model, as shown in Fig. 2, including：Inspection
Survey component, steam generation component, cooling component and control assembly；The detection components are included under oxide skin collecting pipe 7, sample pipe
Stent 8 and sample pipe upper bracket 10；9 upper end of detected sample pipe is provided with sample pipe upper bracket 10, and lower end is provided with sample pipe lower carriage 8, oxygen
Change 7 upper end of skin collecting pipe and be provided with sample pipe lower carriage 8；Air outlet pipe is provided with sample pipe upper bracket 10；Detected sample pipe 9 passes through sample pipe
Upper bracket 10 and sample pipe lower carriage 8 are fixedly installed, oxide skin collecting pipe 7, sample pipe lower carriage 8, detected sample pipe 9 and sample Guan Shangzhi
Frame 10 is in turn connected to form steam passage；The steam generation component is used for by oxide skin collecting pipe 7 into detected sample pipe 9
It is passed through vapor；The cooling component is used to cool down detected sample pipe 9；The control assembly, which is used to control, to be cooled down
Component and steam generation component and programmable controller and host computer；The oxide skin collecting pipe 7, sample pipe lower carriage 8, quilt
Test sample pipe 9, sample pipe upper bracket 10 are sequentially connected, and form steam passage, and installed in 16 upper and lower bottom plate of the cooling chamber center；
Steam temperature transducer 11 is installed in the air outlet pipe of sample pipe upper bracket 10 after the detected sample pipe, the cooling chamber thermometric
Sensor 15 is installed on the outer space between cooling chamber 16 of sample pipe；Steam temperature transducer 6, which is installed on, before the sample pipe steams
After vapour heater 5；Steam temperature transducers after steam temperature transducer 6, sample pipe before the water temperature temperature transducer 3, sample pipe
The output terminal of device 11 and cooling chamber temperature transducer 15 is sequentially connected programmable controller and host computer, and host computer, which is used to show, to be steamed
Steam before vapour generating assembly, steam heating component, the operating status of steam cooling component, and water temperature temperature transducer 3, sample pipe
15 signal intensity of steam temperature transducer 11 and cooling chamber temperature transducer after temperature transducer 6, sample pipe.
In use, opening cooling chamber 16, detected sample pipe 9 is installed between sample pipe upper bracket 10, sample pipe lower carriage 8, and
Connection oxide skin collecting pipe 7, the card for being fixed on 16 upper and lower bottom plate of cooling chamber center after installation is complete in 8 lower part of sample pipe lower carriage
In groove.
Four walls of the inside of cooling chamber 16 have gas pipe 14；Cooling air is transported to by air blower 13 made from refrigeration machine 12
Gas pipe 14；Pure water heating in pure water water tank 1 is produced water vapour by water heater 2, and vapor adds into steam heater 5
Heat, oxide skin collecting pipe 7 is transported to by steam pipe；Steam temperature transducer 6 and sample before sample pipe are provided with before and after detected sample pipe
Steam temperature transducer 11 after pipe, to control the refrigeration work consumption of the heating power of steam heater 5 and refrigeration machine 12.
The detection signal of steam temperature transducer 11 is input to programmable control after steam temperature transducer 6 and sample pipe before sample pipe
Device processed, controls steam heater 5 and refrigeration machine 12 after computing, and host computer shows detection components, steam generation component, cooling
Steam temperature transducer after steam temperature transducer 6, sample pipe before the operating status of component, and water temperature temperature transducer 3, sample pipe
11 and 15 signal intensity of cooling chamber temperature transducer.
During the device to test, host computer sets heating curve, automatically controls water heater 2 and steam heater 5 is added
Heat, makes temperature rise to 540 DEG C；After stablizing 60min, host computer sets temperature lowering curve, rate of temperature fall is automatically controlled, at a temperature of making
It is down to about 100~180 DEG C.Assuming that start and stop 10 times in a past overhaul device of certain unit, above-mentioned step is repeated, repeatedly ten
After secondary, it is cooled to room temperature.When opening measurement, sample pipe upper bracket 10 is dismantled successively, removes detected sample pipe 9, observation S1 sample pipes of taking pictures
The original-shape of inner wall oxide skin, the most thick degree that measurement experimental sample tube oxide skin is not peeled off, the stripping of comparative observation oxide skin
Fall shape；Oxide skin collecting pipe 7 is taken out, the oxide skin accumulation shape peeled off after the observation S4 that takes pictures, measures the oxidation cortex to come off
Amount, detects the constituent for the oxide skin that comes off and shared mass percent, oxide skin volume is calculated according to the ratio between quality and density,
Evaluate scale spallation degree.
As shown in Figure 1, a kind of application method of superheater reheater scale spallation Tachistoscope device of the utility model,
Including：
S1, intercepts the superheater reheater detected sample pipe of specific length, the original-shape for observation inner wall oxide skin of taking pictures, to
Vapor is passed through in detected sample pipe；
S2, according to the heating curve of setting, heats the detected sample pipe；
S3, stablizes a period of time after detected sample pipe is heated evenly, and according to the temperature lowering curve of setting, cools down described be tested
Sample pipe；
S4, according to setting number, repeats S2 and S3；
The oxide skin accumulation shape peeled off after S5, the observation S4 that takes pictures, measures the oxide skin quality of peeling, and oxygen is peeled off in detection
Change the constituent of skin and shared mass percent, oxide skin volume is calculated according to the ratio between quality and density；
The peeling shape of detected sample inside pipe wall oxide skin, aoxidizes with original-shape comparative observation after S6, the observation S4 that takes pictures
Skin peels off the change of shape, the most thick degree that measurement detected sample pipe oxide skin is not peeled off；According to the oxide skin quality of peeling,
Volume, peel off shape change and do not peel off it is most thick degree to peeling degree carry out overall merit judgement.
Specifically by taking power plant's superheater tube oxide skin test as an example, to a kind of superheater reheater described in the utility model
The application method of scale spallation Tachistoscope device illustrates.
First, the superheater detected sample pipe 9 of regulation 200mm length is intercepted with handsaw, and inner wall is carried out using endoscope
Take pictures, record inner wall oxide skin original-shape；And vapor is passed through in Xiang Qiguan, with as acquisition and actual operating state lower class
Condition.
Heating curve when secondly, using Power Plant normal operation, the intercepted superheater detected sample pipe 9 of heating；Reach
To after the temperature of setting, after keeping the temperature 60min, temperature lowering curve during using Power Plant normal operation, the intercepted overheat of cooling
Device detected sample pipe 9；The number of an overhaul life start and stop on the unit is taken, as the number of experiment, is repeated the above steps.
Finally, after test, the oxide skin quality to come off is measured, detects the constituent for the oxide skin that comes off and shared matter
Percentage is measured, oxide skin volume is calculated according to the ratio between quality and density, the shape for observation S1 detected sample inside pipe wall oxide skins of taking pictures
Shape, the most thick degree that measurement experiment detected sample pipe oxide skin is not peeled off, comparative observation scale spallation shape, by existing
Its peeling degree of the appraisement system overall merit of technology.
When being run to approach power plant, the operating mode of superheater inner wall, the vapor is to be added using pure water by high temperature
Generated after heat.
Those skilled in the art will readily occur to other realities of the utility model after the disclosure of specification and practice is considered
Apply scheme.This application is intended to cover any variations, uses, or adaptations of the utility model, these modifications, purposes or
Person's adaptive change follows this general principle and including the undocumented common knowledge in the art of the utility model
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope and spirit of the application will by right
Ask and point out.
It should be appreciated that the accurate knot that the utility model is not limited to be described above and is shown in the drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model only will by appended right
Ask to limit.
Claims (6)
1. a kind of device of superheater reheater scale spallation Tachistoscope, it is characterised in that sent out including detection components, steam
Raw component, cooling component and control assembly；
The detection components include oxide skin collecting pipe (7), are separately positioned under the sample pipe of detected sample pipe (9) lower end and upper end
Stent (8) and sample pipe upper bracket (10)；Oxide skin collecting pipe (7) upper end is provided with sample pipe lower carriage (8)；Sample pipe upper bracket (10)
On be provided with air outlet pipe；Detected sample pipe (9) is fixedly installed by sample pipe upper bracket (10) and sample pipe lower carriage (8), and oxide skin is received
Collector (7), sample pipe lower carriage (8), detected sample pipe (9) and sample pipe upper bracket (10) are in turn connected to form steam passage；
The steam generation component is used to be passed through vapor to tested into detected sample pipe (9) by oxide skin collecting pipe (7)
Sample pipe (9) is heated；
The cooling component is used to cool down detected sample pipe (9)；
The control assembly is used to control cooling component and steam generation component.
A kind of 2. device of superheater reheater scale spallation Tachistoscope according to claim 1, it is characterised in that
The cooling component includes cooling chamber (16) and sequentially connected refrigeration machine (12), air blower (13) and gas pipe (14)；If
The gas pipe (14) in cooling chamber (16) is put to be used to uniformly be sent into air in cooling chamber (16).
A kind of 3. device of superheater reheater scale spallation Tachistoscope according to claim 1, it is characterised in that
The steam generation component includes pure water water tank (1), water heater (2), water temperature temperature transducer (3), steam heater (5)
And steam pipe；Water heater (2) and water temperature temperature transducer (3) are separately positioned in pure water water tank (1)；Pure water water tank (1), steam
Vapour heater (5) and steam pipe are sequentially connected, and steam pipe is connected with oxide skin collecting pipe (7).
A kind of 4. device of superheater reheater scale spallation Tachistoscope according to claim 3, it is characterised in that
The control assembly includes steam temperature transducer (11), cooling chamber thermometric after steam temperature transducer (6), sample pipe before sample pipe
Sensor (15), programmable controller and host computer；
Steam temperature transducer (11) is installed in the air outlet pipe of sample pipe upper bracket (10) after the sample pipe, the cooling chamber
Temperature transducer (15) is installed on detected sample pipe (9) space between cooling chamber (16) outside；Steam thermometric before the sample pipe
Sensor (6) is installed on after steam heater (5)；
Steam temperature transducer (11) after steam temperature transducer (6), sample pipe before the water temperature temperature transducer (3), sample pipe
Programmable controller and host computer are sequentially connected with the output terminal of cooling chamber temperature transducer (15), host computer is used to show steam
Steam before generating assembly, steam heating component, the operating status of steam cooling component, and water temperature temperature transducer (3), sample pipe
Steam temperature transducer (11) and cooling chamber temperature transducer (15) signal intensity after temperature transducer (6), sample pipe.
A kind of 5. device of superheater reheater scale spallation Tachistoscope according to claim 1, it is characterised in that
When the control assembly control steam generation component heats up, the Power Plant where being adopted as detected sample pipe (9) starts when institute
The heating curve taken.
A kind of 6. device of superheater reheater scale spallation Tachistoscope according to claim 1, it is characterised in that
When the control assembly control cooling component cools down, taken when being shut down using the Power Plant where detected sample pipe (9)
Temperature lowering curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721206028.6U CN207248717U (en) | 2017-09-20 | 2017-09-20 | A kind of superheater reheater scale spallation Tachistoscope device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721206028.6U CN207248717U (en) | 2017-09-20 | 2017-09-20 | A kind of superheater reheater scale spallation Tachistoscope device |
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| Publication Number | Publication Date |
|---|---|
| CN207248717U true CN207248717U (en) | 2018-04-17 |
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ID=61885420
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721206028.6U Active CN207248717U (en) | 2017-09-20 | 2017-09-20 | A kind of superheater reheater scale spallation Tachistoscope device |
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| Country | Link |
|---|---|
| CN (1) | CN207248717U (en) |
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2017
- 2017-09-20 CN CN201721206028.6U patent/CN207248717U/en active Active
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