CN107255616A - A kind of devices and methods therefor for simulating water screen tube operation conditions in boiler - Google Patents
A kind of devices and methods therefor for simulating water screen tube operation conditions in boiler Download PDFInfo
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- CN107255616A CN107255616A CN201710431204.4A CN201710431204A CN107255616A CN 107255616 A CN107255616 A CN 107255616A CN 201710431204 A CN201710431204 A CN 201710431204A CN 107255616 A CN107255616 A CN 107255616A
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- Prior art keywords
- pipe
- compressed air
- simulation
- water screen
- screen tube
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004088 simulation Methods 0.000 claims abstract description 46
- 230000007797 corrosion Effects 0.000 claims abstract description 29
- 238000005260 corrosion Methods 0.000 claims abstract description 29
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000007664 blowing Methods 0.000 abstract description 2
- 239000013589 supplement Substances 0.000 description 7
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
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- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Automation & Control Theory (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a kind of devices and methods therefor for simulating water screen tube operation conditions in boiler.Current boiler enters the corrosion condition that boiler observes water screen tube in big light maintenance blowing out.So often the cycle is very long, and causes corrosion just to be taken measures when having occurred and that, result is often passive and efficiency is low.The inventive system comprises simulation pipe, the one end of the simulation pipe is used to the compressed air hose that compressed air is passed through in simulation pipe being connected with one, and the other end is used for the discharge of compressed air；Thermocouple is installed on described simulation pipe.The extent of corrosion that the present invention simulates pipe by routine observation understands the corrosion condition of water screen tube in time, so as to the extent of corrosion of water screen tube in reduction stove of adopting an effective measure, it is ensured that the safe operation of boiler.
Description
Technical field
The present invention relates to the simulation field of water screen tube in boiler, specifically a kind of simulation water screen tube is in boiler
The devices and methods therefor of operation conditions.
Background technology
Current domestic each high-power station is according to national environmental requirement, in order to reduce boiler NOXDischarge capacity, carried out pot
The transformation of stove low NO.The concentration of emission of nitrogen oxides has decline by a relatively large margin, but transformation after the low nitrogen transformation of burner
The problem of increased a large amount of reducibility gas of rear hearth bring high temperature corrosion.
In order to preferably monitor the high temperature corrosion of boiler, the device of monitoring high temperature corrosion need to be designed, and refer to other type of furnaces
High temperature corrosion situation, researching high-temperature corrosion genesis mechanism, advancing a theory property precautionary measures instruct a series of regulating measures, gone forward side by side
The necessary scrap build of row, reaches the purpose of control high temperature corrosion.
At present, domestic and international common practice is：Boiler enters the corrosion shape that boiler observes water screen tube in big light maintenance blowing out
Condition.So often the cycle is very long, and causes corrosion just to be taken measures when having occurred and that, result is often passive and efficiency
Low, the extent of corrosion after being transported again to boiler in stove is not sure, and next maintenance cycle can only be waited to go observation again.But according to existing
Field real running results show, H2S gas contents are high, and the reducing atmosphere in stove is very strong, if can not be within certain cycle
It was observed that in stove water screen tube corrosion condition, it is impossible to ensure the safe operation of boiler.
The content of the invention
The technical problems to be solved by the invention are that the defect for overcoming above-mentioned prior art to exist simulates water cooling there is provided one kind
The device of wall pipe operation conditions in boiler, it simulates the extent of corrosion of pipe to understand water screen tube in time by routine observation
Corrosion condition, with the extent of corrosion of water screen tube in reduction stove of adopting an effective measure.
Therefore, the present invention is adopted the following technical scheme that：A kind of device for simulating water screen tube operation conditions in boiler,
Including simulation pipe, the one end of the simulation pipe is used to the compressed air hose that compressed air is passed through in simulation pipe being connected with one,
The other end is used for the discharge of compressed air；Thermocouple is installed on described simulation pipe.
As the supplement of above-mentioned technical proposal, described compressed air hose is provided with regulating valve, and the regulating valve is controlled by a PID
Device control processed, the temperature signal of thermocouple measurement is transferred to PID controller, valve is controlled to adjust by the temperature of thermocouple measurement
Aperture.
As the supplement of above-mentioned technical proposal, described simulation pipe bends to U-shaped, and it is by a vertical part and positioned at vertical part two ends
Upper and lower transverse part composition, inferior transverse part is connected with compressed air hose, discharge of the upper transverse part for compressed air.
As the supplement of above-mentioned technical proposal, described thermocouple is K-type thermocouple, for thermometric.
As the supplement of above-mentioned technical proposal, the external diameter of the simulation pipe is 20-40mm, to be adapted for mount on seeing for boiler
At fire hole.
The present invention also provides a kind of method for simulating water screen tube operation conditions in boiler, and it includes：
1) U-shaped will be bent to water screen tube material identical simulation pipe, and at the peephole of boiler, will simulate the vertical part of pipe
Flushed in boiler and with water screen tube, compressed air be passed through in the inferior transverse part for simulating pipe, whole simulation pipe is cooled down,
Upper transverse part discharge of the compressed air from simulation pipe；Thermocouple is installed on simulation pipe；
2) in-site installation PID controller, regulating valve is filled on the compressed air hose for being passed through compressed air in simulation pipe,
PID controller controls to adjust the aperture of valve by the temperature of thermocouple measurement；
3) temperature worked according to water-cooling wall, controls to simulate the temperature of tube wall so that simulation by the intake of compressed air
Tube wall is identical with the working condition of water-cooling wall, simulates the extent of corrosion of pipe to understand water screen tube in time using routine observation
Corrosion condition.
As the supplement of above-mentioned analogy method, the part for simulating pipe is sprayed, another part maintains the original state.For than
The pipe sprayed is not made and does the corrosion condition of the pipe of spraying.
The invention has the advantages that：The extent of corrosion that the present invention simulates pipe by routine observation understands water cooling in time
The corrosion condition of wall pipe, so as to the extent of corrosion of water screen tube in reduction stove of adopting an effective measure, it is ensured that the safety fortune of boiler
OK.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Schematic diagram when Fig. 2 is present invention simulation.
In figure, 1- simulation pipes, 2- compressed air hoses, 3- thermocouples, 4- regulating valves, 5-PID controllers, 7- water-cooling walls, 8-
Hearth outer wall, 11- vertical parts, 12- upper transverse parts, 13- inferior transverse parts.
Embodiment
Embodiment 1
A kind of device of simulation water screen tube operation conditions in boiler as shown in Figure 1, simulation pipe 1 takes the shape of the letter U, the simulation pipe
One end is connected with the compressed air hose 2 for compressed air to be passed through in simulation pipe 1, and the other end is used for the row of compressed air
Go out.
Described compressed air hose 2 is provided with regulating valve 4, and the regulating valve 4 is controlled by PID controller 5, and thermocouple 3 is measured
Temperature signal be transferred to PID controller 5, the temperature measured by thermocouple 3 controls to adjust the aperture of valve 4.
Described simulation pipe 1 bends to U-shaped, its upper and lower transverse part 12 by a vertical part 11 and positioned at vertical part two ends, 13 groups
Into inferior transverse part 13 is connected with compressed air hose, and upper transverse part 12 is used to be respectively mounted on the discharge of compressed air, upper and lower transverse part 12,13
K-type thermocouple 3.The external diameter of the simulation pipe is 20-40mm, to be adapted for mount at the peephole of boiler.
Embodiment 2
A kind of method for simulating water screen tube operation conditions in boiler, as shown in Fig. 2 its step is as follows：
1) U-shaped will be bent to water screen tube material identical simulation pipe 1, and at the peephole of boiler, will simulate the perpendicular of pipe 1
Portion 11 is located in boiler and flushed with water screen tube, and compressed air is passed through in the inferior transverse part 13 for simulating pipe 1, and whole simulation pipe is entered
Row cooling, compressed air is discharged from the upper transverse part 12 of simulation pipe；Thermocouple 3 is installed on simulation pipe；
2) in-site installation PID controller 5, regulating valve is filled on the compressed air hose 2 for being passed through compressed air in simulation pipe
4, PID controller controls to adjust the aperture of valve by the temperature of thermocouple measurement；
3) temperature worked according to water-cooling wall, controls to simulate the temperature of tube wall so that simulation by the intake of compressed air
Tube wall is identical with the working condition of water-cooling wall, simulates the extent of corrosion of pipe to understand water screen tube in time using routine observation
Corrosion condition.
Further, the part for simulating pipe is sprayed, another part maintains the original state.For not making the pipe sprayed
With the corrosion condition for the pipe for doing spraying.
Described herein is the specific embodiment of the present invention about apparatus structure and method and step, is to the present invention
The totality of spirit work is explained and for example, those skilled in the art in the invention are also realized that modification or optional implementation
A variety of possibilities of example, inspired by the spirit and principles of the present invention, various modifications may be made, supplements, improve or similar replacement.Can be with
Understand, these modifications, supplement, improvement or replacement will be considered as included in the present invention, and without departing from the present invention
Spirit or surmount scope defined in appended claims.
Claims (7)
1. a kind of device for simulating water screen tube operation conditions in boiler, including simulate pipe with water screen tube material identical
(1), it is characterised in that the one end of the simulation pipe (1) and one is used to being passed through compressed air into the compressed air simulated in pipe
(2) connection is managed, the other end is used for the discharge of compressed air；Thermocouple (3) is installed on described simulation pipe (1).
2. the device of simulation water screen tube operation conditions in boiler according to claim 1, it is characterised in that described
Compressed air hose (2) is provided with regulating valve (4), and the regulating valve (4) is controlled by a PID controller (5), thermocouple (3) measurement
Temperature signal is transferred to PID controller (5), and the aperture of valve (4) is controlled to adjust by the temperature of thermocouple measurement.
3. the device of simulation water screen tube operation conditions in boiler according to claim 1 or 2, it is characterised in that institute
The simulation pipe (1) stated bends to U-shaped, and its upper and lower transverse part (12,13) by a vertical part (11) and positioned at vertical part two ends is constituted, under
Transverse part (13) is connected with compressed air hose, and upper transverse part (12) is used for the discharge of compressed air.
4. the device of simulation water screen tube operation conditions in boiler according to claim 1 or 2, it is characterised in that institute
The thermocouple (3) stated is K-type thermocouple.
5. the device of simulation water screen tube operation conditions in boiler according to claim 1 or 2, it is characterised in that institute
The external diameter for stating simulation pipe is 20-40mm.
6. a kind of method for simulating water screen tube operation conditions in boiler, it includes：
1) U-shaped will be bent to water screen tube material identical simulation pipe, and at the peephole of boiler, will simulate the vertical part of pipe
Flushed in boiler and with water screen tube, compressed air be passed through in the inferior transverse part for simulating pipe, whole simulation pipe is cooled down,
Upper transverse part discharge of the compressed air from simulation pipe；Thermocouple is installed on simulation pipe；
2) in-site installation PID controller, regulating valve is filled on the compressed air hose for being passed through compressed air in simulation pipe,
PID controller controls to adjust the aperture of valve by the temperature of thermocouple measurement；
3) temperature worked according to water-cooling wall, controls to simulate the temperature of tube wall so that simulation by the intake of compressed air
Tube wall is identical with the working condition of water-cooling wall, simulates the extent of corrosion of pipe to understand water screen tube in time using routine observation
Corrosion condition.
7. method according to claim 6, it is characterised in that spray the part for simulating pipe, another part is kept
Original state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710431204.4A CN107255616A (en) | 2017-06-08 | 2017-06-08 | A kind of devices and methods therefor for simulating water screen tube operation conditions in boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710431204.4A CN107255616A (en) | 2017-06-08 | 2017-06-08 | A kind of devices and methods therefor for simulating water screen tube operation conditions in boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107255616A true CN107255616A (en) | 2017-10-17 |
Family
ID=60024506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710431204.4A Pending CN107255616A (en) | 2017-06-08 | 2017-06-08 | A kind of devices and methods therefor for simulating water screen tube operation conditions in boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107255616A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537429A (en) * | 2020-05-21 | 2020-08-14 | 中国石油化工股份有限公司 | Shale gas well shaft dynamic corrosion rate simulation measurement device and method |
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|---|---|---|---|---|
| CN202267264U (en) * | 2011-09-29 | 2012-06-06 | 南京柯德超低温技术有限公司 | Pulse tube refrigerator with device capable of automatically adjusting gas flow and phase |
| CN203300946U (en) * | 2013-04-26 | 2013-11-20 | 中国科学院光电研究院 | Temperature-control system of laser |
| TWM482696U (en) * | 2014-03-20 | 2014-07-21 | Nat Univ Chin Yi Technology | Bypass cooling device |
| CN104550879A (en) * | 2013-10-20 | 2015-04-29 | 宁夏嘉翔自控技术有限公司 | Energy-saving large casting cooling device |
| CN105115888A (en) * | 2015-10-09 | 2015-12-02 | 国网浙江省电力公司电力科学研究院 | Water wall and corrosion degree monitoring device thereof |
| CN105590538A (en) * | 2016-02-27 | 2016-05-18 | 山东大学（威海） | Gas heat exchanger and air flow measurement experimental device |
| CN205404371U (en) * | 2016-03-21 | 2016-07-27 | 西南石油大学 | Natural gas line corrodes simulation monitoring devices |
| CN206161495U (en) * | 2016-10-11 | 2017-05-10 | 国网天津市电力公司 | Stove water erosion nature test simulation studies device |
-
2017
- 2017-06-08 CN CN201710431204.4A patent/CN107255616A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202267264U (en) * | 2011-09-29 | 2012-06-06 | 南京柯德超低温技术有限公司 | Pulse tube refrigerator with device capable of automatically adjusting gas flow and phase |
| CN203300946U (en) * | 2013-04-26 | 2013-11-20 | 中国科学院光电研究院 | Temperature-control system of laser |
| CN104550879A (en) * | 2013-10-20 | 2015-04-29 | 宁夏嘉翔自控技术有限公司 | Energy-saving large casting cooling device |
| TWM482696U (en) * | 2014-03-20 | 2014-07-21 | Nat Univ Chin Yi Technology | Bypass cooling device |
| CN105115888A (en) * | 2015-10-09 | 2015-12-02 | 国网浙江省电力公司电力科学研究院 | Water wall and corrosion degree monitoring device thereof |
| CN105590538A (en) * | 2016-02-27 | 2016-05-18 | 山东大学（威海） | Gas heat exchanger and air flow measurement experimental device |
| CN205404371U (en) * | 2016-03-21 | 2016-07-27 | 西南石油大学 | Natural gas line corrodes simulation monitoring devices |
| CN206161495U (en) * | 2016-10-11 | 2017-05-10 | 国网天津市电力公司 | Stove water erosion nature test simulation studies device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537429A (en) * | 2020-05-21 | 2020-08-14 | 中国石油化工股份有限公司 | Shale gas well shaft dynamic corrosion rate simulation measurement device and method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20171017 |