CN106092359B - Power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device and method - Google Patents
Power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device and method Download PDFInfo
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- CN106092359B CN106092359B CN201610538340.9A CN201610538340A CN106092359B CN 106092359 B CN106092359 B CN 106092359B CN 201610538340 A CN201610538340 A CN 201610538340A CN 106092359 B CN106092359 B CN 106092359B
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- chemical cleaning
- circulation status
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- pipeline circulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
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Abstract
The invention discloses a kind of power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device and method, when superheater chemical cleaning, due to resistance difference between parallel pipeline, a don't bother about will appear vent plug or deposit clogging；The present invention judges flow of media situation in pipeline by monitoring, analyzing temperature change between each tube wall, and carries out automatic alarm to not siphunculus；The present invention solve the problems, such as during superheater chemical cleaning due in burner hearth environment temperature height can not carry out personal monitoring；Feedback time of the present invention is short, accuracy rate is high, high degree of automation, solves a series of limitations of the existing technology；Using the present invention, the real-time monitoring of pipeline blockage situation side by side may be implemented during superheater chemical cleaning, after avoiding chemical cleaning, the booster phenomenon generated during unit starting because pipeline is obstructed carries out providing guarantee for the success of chemical cleaning.
Description
Technical field
The present invention relates to power station mistake/reheater chemical cleaning technique fields, and in particular to a kind of power station superheater chemistry is clear
Wash pipeline circulation status on-Line Monitor Device and method.
Background technique
Power station superheater is run after a certain period of time, due to the continuous growth of oxide skin, will cause the effect that exchanges heat in operational process
The problem of rate reduces；Simultaneous oxidation skin grows into certain thickness, it may occur that falls off, and causes booster, becomes power plant safety production
Hidden danger, therefore pipe internal oxidition skin is removed frequently with the method for chemical cleaning.Plugging or vent plug easily occur in chemical cleaning, influences not
The cleaning effect on siphunculus road.Therefore, in cleaning process, it is necessary to be monitored to the current intelligence of pipeline, convenient for discovery in time
Obstructed pipeline, and then according to monitoring result, it adopts an effective measure.Currently, in superheater Process of Chemical Cleaning, frequently with artificial
The method for touching pipe judges the current intelligence of pipeline.But this method has two: 1) needing special messenger to enter in burner hearth and touch
It manages, in superheater cleaning process, some regional temperatures reach 90 DEG C or more in burner hearth, inconvenient personnel's operation；2) monitoring cannot connect
It is continuous to carry out, not siphunculus can not be found in time.Therefore, according to physical condition, urgent need develops one kind convenient for operating and can supervise in real time
The means of test tube road current intelligence
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of power station superheater chemical cleaning pipeline streams
Whether logical state on_line monitoring device and method can quickly, in accurate, real-time judge superheater Process of Chemical Cleaning have occurred
Plugging/vent plug guarantees going on smoothly for chemical cleaning project so as to guide the operating procedure in cleaning process；The present invention is simple
It is easy, feedback time is short, accuracy rate is high, high degree of automation solves the above problem.
In order to reach the goals above, the present invention adopts the following technical scheme:
A kind of power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device, including it is installed on monitored equipment 1
Far from multiple sensors 2 on the outer wall at header, the multiple sensor 2 is mounted on monitored by fixed heat-preserving equipment 3
On the tube wall of equipment 1, the signal wire 4 that the multiple sensor 2 is drawn accesses inspection device 6, inspection device by quick coupling 5
6 are placed at the outer room temperature of furnace of power-plant boilers, and inspection device 6 is sequentially connected communication converter 8 and computer 9 by data line 7,
After multiple sensors 2 are measured temperature signal packing by inspection device 6, by 7 teletransmission of data line to communication converter 8, and convert
Access is placed in the computer 9 of control room after the digital signal that can be identified for computer, is circulated by the pipeline in computer 9
State analysis system 10 is monitored and alarms.
The sensor 2 avoids signal wire 4 too long for PT1000 type thermal resistance temperature sensor using three-wire system connection
Generate error.
The sensor 2 is tiles structure, and inner wall radius is identical as 1 tube wall outer diameter of monitored equipment, guarantees 2 energy of sensor
It is enough to be fitted closely with monitored equipment；Sensor 2 is magnetic, can automatic absorbing in ferromagnetic tubes tube wall.
The fixed heat-preserving equipment 3 is the C-shaped elastic device being process by spring steel, outside internal diameter and monitored equipment 1
Diameter is identical, and outside is enclosed with thermal insulation material, can be fixed on sensor 2 on the tube wall of monitored equipment 1, while playing heat preservation
Effect.
The signal wire 4 is three core silver-coated copper wires, and band shielded layer, the insulating coating of signal wire 4 is fluoroplastics.
The quick coupling 5 is four needle aviation plugs.
The inspection device 6 is intelligent multichannel temperature polling instrument, and the channel 100ms/, measurement accuracy ± 0.2%FS has
PORT COM can carry out signal transmission by communication converter 8 and computer 9.
The data line 7 is anti-electromagnetic interference twisted pair, and length is up to 300 meters.
Whole measuring point datas can be carried out real-time display by the pipeline circulation status analysis system 10, and obstructed in appearance
It alarms when pipe problem；Any point or multiple spot historical data can also be recalled simultaneously, draws time graph, convenient for analysis ratio
Compared with.
The installation and monitoring method of device described above, include the following steps:
Step 1: the tube wall dust that monitored equipment 1 is installed at measuring point should be cleaned out before installation, and uniformly smear one
Layer heat-conducting glue；
Step 2: sensor 2 being affixed on fixed heat-preserving equipment 3, and monitored set is fixed on by fixed heat-preserving equipment 3
On standby 1 tube wall；
Step 3: the signal wire 4 of sensor 2 being led to outside burner hearth, is connected with inspection device 6, when wiring numbers measuring point
It numbers and corresponds with the logging in inspection device 6, and record；
Step 4: the temperature signal that measuring point number incoming line circulation status analysis system 10, all the sensors 2 are transmitted
The digital signal that can be identified by pipeline circulation status analysis system 10 is converted to by communication converter 8, and by all temperature
With tabular form output on the display of computer 9, each Refresh Data period is 1 second；
Step 5: alarm temperature range is set in pipeline circulation status analysis system 10, certain measuring point detects temperature beyond setting
After range, the measuring point flashes on display, and simultaneous computer 10 sounds an alarm sound, prompts that plugging problem occurs.
Compared to the prior art, the present invention has the advantage that
1) method for judging whether there is not siphunculus by wall temperature variation is simple and easy, as a result accurately, and will not be to be checked
Equipment is looked into damage；
2) temperature measuring equipment structure is simple, easy for installation；
3) point position has mobility, can measure for emphasis position；
4) equipment is able to carry out real time monitoring, finds not siphunculus automatic alarm.
In short, the present invention solve superheater chemical cleaning during due in burner hearth environment temperature height can not manually be supervised
The problem of survey；Feedback time of the present invention is short, accuracy rate is high, high degree of automation, solves a series of offices of the existing technology
It is sex-limited；Using the present invention, the real-time monitoring of pipeline blockage situation side by side, avoiding may be implemented during superheater chemical cleaning
After learning cleaning, the booster phenomenon generated during unit starting because pipeline is obstructed carries out providing guarantor for the success of chemical cleaning
Card.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of experimental rig of the present invention.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device of the present invention, including pass
Sensor 2 and fixed heat-preserving equipment 3 are installed on 1 outer wall of monitored equipment far from header and making isothermal holding, the biography of whole measuring points
Sensor 2 draws signal wire 4 and accesses inspection device 6 by quick coupling 5, and inspection device 6 is placed at the outer room temperature of boiler furnace, protects
Demonstrate,prove its normal work.After 2 data measured of all sensors is packaged by inspection device 6, pass through 7 teletransmission of data line to communication converter
8, the computer 9 for being placed in control room is accessed after being converted into the signal that computer can identify, passes through the pipeline stream in computer 9
Logical state analysis system 10 is monitored and alarms.
The installation and application method of device of the present invention, include the following steps:
Step 1: the tube wall dust that monitored equipment 1 is installed at measuring point should be cleaned out before installation, and uniformly smear one
Layer heat-conducting glue；
Step 2: sensor 2 being affixed on fixed heat-preserving equipment 3, and monitored set is fixed on by fixed heat-preserving equipment 3
On standby 1 tube wall；
Step 3: the signal wire 4 of sensor 2 being led to outside burner hearth, is connected with inspection device 6, when wiring compiles measuring point
It number numbers and to correspond with the logging in inspection device 6, and record；
Step 4: the temperature signal that measuring point number incoming line circulation status analysis system 10, all the sensors 2 are transmitted
The digital signal that can be identified by pipeline circulation status analysis system 10 is converted to by communication converter 8, and by all temperature
With tabular form output on the display of computer 9, each Refresh Data period is 1 second；
Step 5: alarm temperature range is set in pipeline circulation status analysis system 10, certain measuring point detects temperature beyond setting
After range, the measuring point flashes on display, and simultaneous computer 10 sounds the alarm because prompting that plugging problem occurs.
The present invention can carry out real-time monitoring to not siphunculus situation, once plugging/vent plug occurs, can sound an alarm automatically,
Convenient for finding the problem and handling in time.
Claims (7)
1. a kind of power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device, it is characterised in that: including be installed on by
Monitoring device (1) is set far from multiple sensors (2) on the outer wall at header, the multiple sensor (2) by fixed heat preservation
Standby (3) are mounted on the tube wall of monitored equipment (1), and the signal wire (4) that the multiple sensor (2) is drawn passes through quick coupling
(5) inspection device (6) are accessed, inspection device (6) is placed at the outer room temperature of furnace of power-plant boilers, and inspection device (6) passes through data
Line (7) is sequentially connected communication converter (8) and computer (9), and multiple sensors (2) are measured temperature signal by inspection device (6)
After packing, by data line (7) teletransmission to communication converter (8), and the digital signal that is converted into computer and can identify is followed by
The computer (9) for entering to be placed in control room, be monitored by the pipeline circulation status analysis system (10) in computer (9) and
Alarm；
The sensor (2) is tiles structure, and inner wall radius is identical as monitored equipment (1) tube wall outer diameter, is guaranteed sensor (2)
It can be fitted closely with monitored equipment；Sensor (2) is magnetic, can automatic absorbing in ferromagnetic tubes tube wall；
The fixed heat-preserving equipment (3) is the C-shaped elastic device being process by spring steel, and internal diameter and monitored equipment (1) are outside
Diameter is identical, and outside is enclosed with thermal insulation material, and sensor (2) can be fixed on the tube wall of monitored equipment (1), played simultaneously
Insulation effect；
The inspection device (6) is intelligent multichannel temperature polling instrument, the channel 100ms/, measurement accuracy ± 0.2%FS, with logical
Port is interrogated, signal transmission can be carried out by communication converter (8) and computer (9).
2. a kind of power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device according to claim 1, special
Sign is: the sensor (2) avoids signal wire (4) mistake using three-wire system connection for PT1000 type thermal resistance temperature sensor
It is long to generate error.
3. a kind of power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device according to claim 1, special
Sign is: the signal wire (4) is three core silver-coated copper wires, and band shielded layer, the insulating coating of signal wire (4) is fluoroplastics.
4. a kind of power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device according to claim 1, special
Sign is: the quick coupling (5) is four needle aviation plugs.
5. a kind of power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device according to claim 1, special
Sign is: the data line (7) is anti-electromagnetic interference twisted pair, and length is up to 300 meters.
6. a kind of power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device according to claim 1, special
Sign is: whole measuring point datas can be carried out real-time display by the pipeline circulation status analysis system (10), and occurred not
It alarms when siphunculus problem；Any point or multiple spot historical data can also be recalled simultaneously, draws time graph, convenient for analysis
Compare.
7. the installation and monitoring method of claim 1 described device, characterized by the following steps:
Step 1: the tube wall dust that monitored equipment (1) is installed at measuring point should be cleaned out before installation, and uniformly smear one layer
Heat-conducting glue；
Step 2: sensor (2) being affixed on fixed heat-preserving equipment (3), and is fixed on by fixed heat-preserving equipment (3) monitored
On equipment (1) tube wall；
Step 3: the signal wire (4) of sensor (2) being led to outside burner hearth, is connected with inspection device (6), when wiring compiles measuring point
It number numbers and to correspond with the logging in inspection device (6), and record；
Step 4: by measuring point number incoming line circulation status analysis system (10), the temperature signal of all the sensors (2) transmission
The digital signal that can be identified by pipeline circulation status analysis system (10) is converted to by communication converter (8), and will be owned
Temperature is exported on the display of computer (9) with tabular form, and each Refresh Data period is 1 second；
Step 5: alarm temperature range is set in pipeline circulation status analysis system (10), certain measuring point detects temperature beyond setting model
After enclosing, the measuring point flashes on display, and simultaneous computer (9) sounds an alarm sound, prompts that plugging problem occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610538340.9A CN106092359B (en) | 2016-07-08 | 2016-07-08 | Power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610538340.9A CN106092359B (en) | 2016-07-08 | 2016-07-08 | Power station superheater chemical cleaning pipeline circulation status on-Line Monitor Device and method |
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| CN106092359A CN106092359A (en) | 2016-11-09 |
| CN106092359B true CN106092359B (en) | 2018-12-18 |
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Citations (5)
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|---|---|---|---|---|
| JPH07333181A (en) * | 1994-06-13 | 1995-12-22 | Mitsubishi Heavy Ind Ltd | Ash transport monitor device |
| CN1237638A (en) * | 1999-06-16 | 1999-12-08 | 冶金工业部钢铁研究总院 | Monitoring system of coal powder injection state of coal powder injection branch pipe of blast furnace |
| JP2008224553A (en) * | 2007-03-14 | 2008-09-25 | Daikin Ind Ltd | Thermistor mounting body |
| JP2009031243A (en) * | 2007-06-28 | 2009-02-12 | Jfe Steel Kk | Method for diagnosing clogging of piping |
| CN101737628A (en) * | 2008-11-12 | 2010-06-16 | 泰亚国际科技股份有限公司 | Detecting and early warning method of pipeline clogging |
-
2016
- 2016-07-08 CN CN201610538340.9A patent/CN106092359B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07333181A (en) * | 1994-06-13 | 1995-12-22 | Mitsubishi Heavy Ind Ltd | Ash transport monitor device |
| CN1237638A (en) * | 1999-06-16 | 1999-12-08 | 冶金工业部钢铁研究总院 | Monitoring system of coal powder injection state of coal powder injection branch pipe of blast furnace |
| JP2008224553A (en) * | 2007-03-14 | 2008-09-25 | Daikin Ind Ltd | Thermistor mounting body |
| JP2009031243A (en) * | 2007-06-28 | 2009-02-12 | Jfe Steel Kk | Method for diagnosing clogging of piping |
| CN101737628A (en) * | 2008-11-12 | 2010-06-16 | 泰亚国际科技股份有限公司 | Detecting and early warning method of pipeline clogging |
Non-Patent Citations (2)
| Title |
|---|
| ６００ＭＷ超临界锅炉受热面氧化皮生成原因分析及防治措施;李振华 等;《河北电力技术》;20151231;第34卷;第54、55页 * |
| 流动保障技术在海底热油管道上的应用;龙大平 等;《管道技术与设备》;20110531(第3期);第1-3页 * |
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| CN106092359A (en) | 2016-11-09 |
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Effective date of registration: 20181017 Address after: 710032 Xingqing Road, Xi'an, Shaanxi 136 Applicant after: Xi'an Thermal Power Research Institute Co., Ltd. Address before: 710075 B Torch Hotel, Gaoxin Road, Xi'an new and high tech Zone, Shaanxi Applicant before: XI'AN XIRE POWER STATION CHEMICAL SCIENCE & TECHNOLOGY CO., LTD. |
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