CN205842621U - Steam temperature rate of change real-time monitoring system - Google Patents
Steam temperature rate of change real-time monitoring system Download PDFInfo
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- CN205842621U CN205842621U CN201620809448.2U CN201620809448U CN205842621U CN 205842621 U CN205842621 U CN 205842621U CN 201620809448 U CN201620809448 U CN 201620809448U CN 205842621 U CN205842621 U CN 205842621U
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Abstract
The utility model discloses steam temperature rate of change real-time monitoring system, including: temperature-detecting device, DCS control system, rate temperature change calculate device, described temperature-detecting device electrically connects with DCS control system, and described DCS control system calculates device bidirectional data transfers with rate temperature change and is connected.This utility model calculates device by arranging rate temperature change, the real-time temperature change value detected according to DCS control system and the ratio of time changing value, calculate real-time rate temperature change, show variation tendency and the speed of Current Temperatures intuitively, result of calculation quantifies, more accurate, be effectively improved work efficiency, alarm device be set simultaneously, in time early warning, reminds staff to take measures guarantee equipment normal operation.
Description
Technical field
This utility model belongs to station boiler field, specifically, relates to steam temperature rate of change real-time monitoring system.
Background technology
Thermal power generation is the generation mode that China is main, station boiler as one of the three big main process equipments of firepower power station,
Development along with China's Thermal Power Generation Industry.In recent years, environmental protection and energy saving become the important of China electric power industry structural adjustment
Direction, accelerates the update of domestic thermal power generating equipment to a great extent." water-cooling wall ", " superheater tube " of station boiler,
" reheater tube ", the wear and corrosion at high temperature of " economizer tube ", be the main cause causing pipeline leakage, is also common technology
Problem, it is brought the biggest threat to the safe operation of power plant, frequently results in the generation of accident.
For avoiding above-mentioned bad phenomenon to occur, in actual production runs, the main reheat steam temperature of boiler is needed to keep stable,
During progressively heating up, it is ensured that rate temperature change is in stable scope, and general rate temperature change should control 2
DEG C/min within, normal operation and the life-span of equipment could be ensured.If steam temperature acute variation can cause the serious shadow of device damage
Ringing, boiler water wall may be produced transversal crack, finishing superheater and final reheater because of steam temperature change by alternating thermal stress
Coming off probably due to variations in temperature produces oxide skin, blocking steam circulation causes overtemperature tube burst.
Therefore, in the operating of boiler, real-time and adjust temperature-time according to rate temperature change, and currently without can
Monitor the appliance arrangement of rate temperature change in real time, calculate speed all in accordance with temperature detection result, then go to control temperature-time,
Add the load of staff, it is impossible to simplify control and the regulation of rate temperature change.
In view of this special proposition this utility model.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, it is provided that steam temperature rate of change is real-time
Monitoring system, calculates device by increasing a rate temperature change in existing DCS control system, controls system according to DCS
The temperature value that detects of system and time value, calculate real-time rate temperature change, makes rate temperature change directly with numeral
Form is presented on the display floater of DCS control system, shows variation tendency and the speed of Current Temperatures intuitively, is effectively improved
Work efficiency, arranges alarm device simultaneously, timely early warning, reminds staff to take measures guarantee equipment normal operation.
For solving above-mentioned technical problem, the basic conception of this utility model employing technical scheme is:
Steam temperature rate of change real-time monitoring system, including:
Temperature-detecting device, detects superheater, the real time temperature T of reheater；
DCS control system, collects record real time temperature T, the data of real-time time t, and is transferred to rate temperature change meter
Calculate device；
Rate temperature change calculates device, by the quantitative change of real time temperature T and real-time time t, calculates temperature and becomes
Change speed v, i.e. draw rate temperature change by the ratio calculation of real time temperature variation delta T Yu real-time time variation delta tAnd real time temperature rate of change v is transferred to DCS control system；
Described temperature-detecting device electrically connects with DCS control system, described DCS control system and rate temperature change
Calculate device bidirectional data transfers to connect.
Further, it is microprocessor that described rate temperature change calculates device.
Further, it is single-chip microcomputer, PLC chip or ARM that described rate temperature change calculates device.
Further, described DCS control system is provided with the display device of displays temperature rate of change v.
Further, described temperature-detecting device is multiple and is separately mounted on superheater, reheater.
Further, described superheater, reheater are no less than two, and described temperature-detecting device is mounted at least
On the superheater at end and reheater.
Further, described superheater is four, respectively primary superheater, two-stage superheater, three-stagesuperheater, four
Level superheater, described reheater is two, respectively primary re-heater, final reheater, described level Four superheater and end
It is mounted on temperature-detecting device on level reheater.
Further, described temperature-detecting device is pyrometer couple.
Further, also include that alarm device, described alarm device calculate with DCS control system or rate temperature change
Device connects.
Further, described alarm device is for immediately triggering device, when rate temperature change v is more than or equal to preset value v0
Time, i.e. v >=v0Time, described alarm device triggers startup, described v automatically0Set according to different rate temperature change demands
Fixed.
Further, described alarm device is alarm lamp, buzzer or early warning frame.
After using technique scheme, this utility model compared with prior art has the advantages that.
This utility model calculates device by increasing a rate temperature change in existing DCS control system, according to
The real-time temperature change value that DCS control system detects and the ratio of time changing value, calculate real-time variations in temperature speed
Rate, makes rate temperature change be presented on the most in digital form on the display floater of DCS control system, and display is current intuitively
The variation tendency of temperature and speed, result of calculation quantifies, more accurate, is effectively improved work efficiency.
This utility model arranges alarm device simultaneously, the real-time rate temperature change value that DCS control system is shown with
Preset value carries out real time contrast, timely early warning, reminds staff to take measures to adjust temperature, reduces overtemperature, prevents from burning out, protect
Card equipment normal operation.
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in further detail.
Accompanying drawing explanation
Accompanying drawing, as the part of the application, is used for providing being further understood from of the present utility model, this utility model
Schematic description and description be used for explaining this utility model, but do not constitute improper restriction of the present utility model.Obviously,
Accompanying drawing in describing below is only some embodiments, to those skilled in the art, is not paying creative labor
On the premise of Dong, it is also possible to obtain other accompanying drawings according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is the structural representation of this utility model embodiment one.
In figure: 10-boiler；21-primary superheater；22-two-stage superheater；23-three-stagesuperheater；24-level Four superheater；
31-primary re-heater；32-final reheater；40-DCS control system；50-rate temperature change calculates device；60-reports to the police dress
Put.
It should be noted that these accompanying drawings and word describe and are not intended as limiting design of the present utility model by any way
Scope, but be that those skilled in the art illustrate concept of the present utility model by reference specific embodiment.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described the technical scheme in embodiment, and following example are used for illustrating this
Utility model, but it is not limited to scope of the present utility model.
In description of the present utility model, it should be noted that term " on ", D score, "front", "rear", "left", "right",
Orientation or the position relationship of the instruction such as " vertically ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
It is easy to describe this utility model and simplification description rather than instruction or the device of hint indication or element must have specific side
Position, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.
For the ordinary skill in the art, above-mentioned term specifically containing in this utility model can be understood with concrete condition
Justice.
This utility model steam temperature rate of change real-time monitoring system, including:
Temperature-detecting device, detects superheater, the real time temperature T of reheater；
DCS control system, collects record real time temperature T, the data of real-time time t, and is transferred to rate temperature change meter
Calculate device；
Rate temperature change calculates device, by the quantitative change of real time temperature T and real-time time t, calculates temperature and becomes
Change speed v, i.e. draw rate temperature change by the ratio calculation of real time temperature variation delta T Yu real-time time variation delta tAnd real time temperature rate of change v is transferred to DCS control system；
Described temperature-detecting device electrically connects with DCS control system, described DCS control system and rate temperature change
Calculate device bidirectional data transfers to connect.
Specifically, the superheater, reheater of boiler are installed temperature-detecting device, monitors superheater, reheater in real time
Wall temperature, temperature-detecting device is by being connected with DCS control system, by the Temperature Feedback that detects in real time to DCS control system
Display floater on, dynamically, display real time temperature T, real-time time t in real time.
DCS control system as boiler implosion center, the real time temperature T that detected by temperature-detecting device, real-time time
Between t collect in DCS control system, the corresponding real-time time t of real time temperature T, and those data are transferred to temperature become
Changing rate computation apparatus, rate temperature change calculating device, according to real time temperature T and the variable quantity of real-time time t, calculates reality
Time rate temperature change, i.e. draw temperature by the ratio calculation of real time temperature variation delta T Yu real-time time variation delta t
Rate of changeWherein, it is microprocessor that described rate temperature change calculates device, it is preferable that described temperature becomes
Change rate computation apparatus is single-chip microcomputer, PLC chip or ARM, and rate temperature change calculating device also serves as a program and can arrange
In DCS control system, make full use of the controllability of DCS control system, facilitate equipment to run and management.
The real time temperature change speed v calculated is to present in digital form, and described DCS control system is provided with display temperature
The display device of degree rate of change v, on the main reheat steam temperature picture of existing DCS control system, increases a displays temperature
The window of rate of change, shows on panel intuitively by rate temperature change, facilitates staff's Direct Recognition Current Temperatures
Variation tendency and speed, in order to preferably control temperature-time.
Wherein, superheater, reheater in the boiler are generally individually no less than two, and the DCS control system of majority is often
It is mounted on temperature-detecting device on one superheater and reheater, is used for monitoring real time temperature change, described superheater, again
Hot device is no less than two, and described temperature-detecting device is mounted at least on superheater and the reheater at end, due to end
Superheater, reheater be the reaction temperature device of main temperature control speed, therefore, be at least positioned at the overheated of end
Temperature-detecting device is installed on device, reheater, for DCS control system collect minimum effective real time temperature T with time real-time
Between t, calculate rate temperature change.
Preferably, described superheater is four, respectively primary superheater, two-stage superheater, three-stagesuperheater, level Four
Superheater, described reheater is two, respectively primary re-heater, final reheater, described level Four superheater and final stage
Temperature-detecting device it is mounted on reheater, it is further preferred that primary superheater, two-stage superheater, three-stagesuperheater, just
Being mounted on temperature-detecting device on level reheater, temperature-detecting device includes several temperature detecting point and was evenly arranged in
Hot device, reheater inwall on.
Temperature-detecting device can set according to the actual requirements, and different high pressure, high temperature requirement arrange the temperature inspection being consistent
Surveying device, it is preferable that described temperature-detecting device is pyrometer couple, pyrometer couple is arranged with the form of test point and is arranged
Superheater, reheater wall on, detect temperature in real time.
After rate temperature change calculates, in order to realize automatically monitoring, timely system for prompting or staff, prevent
Rate temperature change exceedes desired value, and described alarm device is for immediately triggering device, when rate temperature change v is more than or equal to pre-
If value v0Time, i.e. v >=v0Time, described alarm device triggers startup, described v automatically0According to different rate temperature change need
Ask setting, alarm device to calculate device with DCS control system or rate temperature change to be connected, it is preferable that alarm device is controlled with DCS
System processed connects, and in preset value, rate temperature change is that the result calculated in real time presents, as rate temperature change v
Exceed preset value v0, DCS control system can automatically trigger alarm device, provide alarm, it is to avoid rate temperature change mistake
Cause greatly equipment damage, according to different time sections, the requirement of temperature rate is set different v0, change over time and change
Become preset value v0, meet real-time speed change demand.
Alarm device is as timely system for prompting or the alarm set of personnel, and described alarm device is alarm lamp, buzz
Device or early warning frame, can directly be connected DCS control system with alarm lamp or buzzer, at rate temperature change v >=v0Time,
Alarm lamp lights or buzzer Chinese percussion instrument, ejects early warning frame also or in the display floater of DCS control system, cooperatively forms
Alarm lamp, buzzer, early warning frame multilevel security are pointed out, it is ensured that early warning can reach real purpose timely and effectively.
This utility model calculates device by increasing a rate temperature change in existing DCS control system, according to
The real-time temperature change value that DCS control system detects and the ratio of time changing value, calculate real-time variations in temperature speed
Rate, makes rate temperature change be presented on the most in digital form on the display floater of DCS control system, and display is current intuitively
The variation tendency of temperature and speed, result of calculation quantifies, more accurate, is effectively improved work efficiency.
This utility model arranges prior-warning device simultaneously, the real-time rate temperature change value that DCS control system is shown with
Preset value carries out real time contrast, reminds staff to take measures to adjust temperature in time, reduces overtemperature, prevents from burning out, it is ensured that set
Standby normal operation.
Embodiment one
As it is shown in figure 1, the steam temperature rate of change real-time monitoring system described in the present embodiment, including: temperature-detecting device,
DCS control system 40, rate temperature change calculate device 50, alarm device 60, and temperature-detecting device is separately mounted to be positioned at pot
Primary superheater 21 in stove 10, two-stage superheater 22, three-stagesuperheater 23, level Four superheater 24, primary re-heater 31, final stage
On reheater 32, it is single-chip microcomputer that rate temperature change calculates device 50, and temperature-detecting device is pyrometer couple, takes multiple spot cloth
Put, the mode of branch detection is arranged on the wall of expired heat and reheater.
Gas is after boiler 10 sequentially passes through sectionalized superheater, reheater, then is delivered to follow-up equipment and produces,
Temperature increase rate is controlled, it is ensured that the change of temperature, in the allowable range of equipment, ensures the production safety of equipment in this section.
DCS control system 40 respectively connected each temperature-detecting device, by the thermotonus that detects in real time in DCS control system 40
Main reheat steam temperature picture on.
Real time temperature T and real-time time t that DCS control system 40 by detection, is collected send rate temperature change meter to
Calculate device 50, under rate temperature change calculates the calculating of device 50, i.e. become with real-time time by real time temperature variation delta T
The ratio calculation of change amount Δ t draws rate temperature changeRate temperature change calculates device 50
Bidirectional data transfers connects, and rate temperature change calculates device 50 and sent to by the real-time rate temperature change v calculated
DCS control system 40, by increasing the window of a displays temperature rate of change on DCS control system 40 main reheat steam temperature picture
Mouthful, for by display real-time for rate temperature change v in the window, make staff very clear to the result of temperature rate,
Avoid the loaded down with trivial details calculation calculating rate temperature change according to temperature variation, and result of calculation is more accurately, more in real time, in time
Control temperature to make corresponding adjustment.
For improving the effective monitoring to rate temperature change further, rate temperature change preset value v is set0, as v >=v0
Time, described alarm device triggers startup, described v automatically0According to different rate temperature change requirements set.At preset value
In, rate temperature change is that the result calculated in real time presents, when rate temperature change v has exceeded preset value v0, DCS is controlled
System processed can trigger alarm device automatically, provides alarm, it is to avoid rate temperature change is excessive causes equipment damage, according to not
With the time period, the requirement of temperature rate is set different v0, change over time and change preset value v0, meet real-time
Speed change demand.
Alarm lamp that alarm device 60 in the present embodiment includes being connected with DCS control system 40, buzzer, early warning
Frame, as v >=v0Time, DCS control system 40 display floater there will be early warning frame, remind staff's rate temperature change
V has exceeded preset value v0, alarm lamp, buzzer start simultaneously, are collectively forming a warning system, remind related personnel in time,
To make temperature in time to control to adjust, it is ensured that the normal production run of equipment.
The real-time temperature change value that the present embodiment detects according to DCS control system 40 and the ratio of time changing value,
Calculate real-time rate temperature change, make rate temperature change be presented on DCS control system 40 the most in digital form
On display floater, showing variation tendency and the speed of Current Temperatures intuitively, result of calculation quantifies, more accurate, is effectively improved work
Make efficiency, remind staff to take measures to adjust temperature in time, reduce overtemperature, prevent from burning out, it is ensured that equipment normal operation.
The above is only preferred embodiment of the present utility model, not makees this utility model any pro forma
Limit, although this utility model is disclosed above with preferred embodiment, but is not limited to this utility model, any familiar
The technical staff of this patent is in the range of without departing from technical solutions of the utility model, when the technology contents of available above-mentioned prompting is made
Go out a little change or be modified to the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solutions of the utility model,
Any simple modification, equivalent variations and the modification made above example according to technical spirit of the present utility model, the most still belongs to
In the range of this utility model scheme.
Claims (10)
1. steam temperature rate of change real-time monitoring system, it is characterised in that including:
Temperature-detecting device, detects superheater, the real time temperature T of reheater；
DCS control system, collects record real time temperature T, the data of real-time time t, and is transferred to rate temperature change calculating dress
Put；
Rate temperature change calculates device, by the quantitative change of real time temperature T and real-time time t, calculates variations in temperature speed
Rate v, i.e. draws rate temperature change by the ratio calculation of real time temperature variation delta T Yu real-time time variation delta tAnd real time temperature rate of change v is transferred to DCS control system；
Described temperature-detecting device electrically connects with DCS control system, and described DCS control system calculates with rate temperature change
Device bidirectional data transfers connects.
Steam temperature rate of change real-time monitoring system the most according to claim 1, it is characterised in that described variations in temperature speed
It is microprocessor that rate calculates device.
Steam temperature rate of change real-time monitoring system the most according to claim 1, it is characterised in that described DCS controls system
System is provided with the display device of displays temperature rate of change v.
Steam temperature rate of change real-time monitoring system the most according to claim 1, it is characterised in that described temperature detection dress
It is set to multiple and is separately mounted on superheater, reheater.
Steam temperature rate of change real-time monitoring system the most according to claim 4, it is characterised in that described superheater, again
Hot device is no less than two, and described temperature-detecting device is mounted at least on superheater and the reheater at end.
Steam temperature rate of change real-time monitoring system the most according to claim 5, it is characterised in that described superheater is four
Individual, respectively primary superheater, two-stage superheater, three-stagesuperheater, level Four superheater, described reheater is two, respectively
For primary re-heater, final reheater, described level Four superheater and final reheater are mounted on temperature-detecting device.
7. according to the steam temperature rate of change real-time monitoring system described in claim 4-6 any one, it is characterised in that described
Temperature-detecting device is pyrometer couple.
Steam temperature rate of change real-time monitoring system the most according to claim 1, it is characterised in that also include alarm device,
Described alarm device calculates device with DCS control system or rate temperature change and is connected.
Steam temperature rate of change real-time monitoring system the most according to claim 8, it is characterised in that described alarm device is
Immediately device is triggered, when rate temperature change v is more than or equal to preset value v0Time, i.e. v >=v0Time, described alarm device touches automatically
Send out and start, described v0According to different rate temperature change requirements set.
Steam temperature rate of change real-time monitoring system the most according to claim 8 or claim 9, it is characterised in that described warning dress
It is set to alarm lamp, buzzer or early warning frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620809448.2U CN205842621U (en) | 2016-07-28 | 2016-07-28 | Steam temperature rate of change real-time monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620809448.2U CN205842621U (en) | 2016-07-28 | 2016-07-28 | Steam temperature rate of change real-time monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107943171A (en) * | 2017-11-29 | 2018-04-20 | 深圳市亿兆互联技术有限公司 | A kind of machine room's intelligence control system |
| CN111111405A (en) * | 2020-02-12 | 2020-05-08 | 山西华仁通电力科技有限公司 | Ammonia SNCR (Selective non catalytic reduction) denitration system for tower boiler |
| CN111176231A (en) * | 2019-12-23 | 2020-05-19 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for monitoring change rate of important parameter and giving alarm in advance |
-
2016
- 2016-07-28 CN CN201620809448.2U patent/CN205842621U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107943171A (en) * | 2017-11-29 | 2018-04-20 | 深圳市亿兆互联技术有限公司 | A kind of machine room's intelligence control system |
| CN111176231A (en) * | 2019-12-23 | 2020-05-19 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for monitoring change rate of important parameter and giving alarm in advance |
| CN111111405A (en) * | 2020-02-12 | 2020-05-08 | 山西华仁通电力科技有限公司 | Ammonia SNCR (Selective non catalytic reduction) denitration system for tower boiler |
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