CN112199867A - System and method for automatically calculating coal type switching time in coal bunker - Google Patents
System and method for automatically calculating coal type switching time in coal bunker Download PDFInfo
- Publication number
- CN112199867A CN112199867A CN202011298783.8A CN202011298783A CN112199867A CN 112199867 A CN112199867 A CN 112199867A CN 202011298783 A CN202011298783 A CN 202011298783A CN 112199867 A CN112199867 A CN 112199867A
- Authority
- CN
- China
- Prior art keywords
- coal
- coal bunker
- bunker
- time
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 230
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 24
- 238000004364 calculation method Methods 0.000 claims description 17
- 238000004458 analytical method Methods 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 2
- 238000013480 data collection Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 description 11
- 238000005457 optimization Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/12—Timing analysis or timing optimisation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a system and a method for automatically calculating coal type switching time in a coal bunker, which comprises a coal bunker level meter arranged on a coal bunker, a coal feeding flow meter and a data acquisition system arranged on the coal bunker, wherein the output ends of the coal feeding flow meter and the data acquisition system are connected with the input end of a data receiving system through the existing network gate of a power station, the output end of the data receiving system is connected with the input end of a data processing system, and the client end of a distribution system is connected with the server end of the data processing system. The invention utilizes the height measured by the coal bunker level gauge in real time before the newly added coal enters the coal bunker and the coal supply flow measured by the coal supply flow meter in real time to automatically calculate the switching time of the running-out of the original coal in the coal bunker and the leaving of the newly added coal from the coal bunker in real time.
Description
Technical Field
The invention relates to the technical field of soft measurement of industrial coal-fired boilers and power station coal-fired boilers, in particular to a system and a method for automatically calculating coal type switching time in a coal bunker.
Background
The coal-fired boiler combustion needs to convey different coals to the coal bunker in batches at regular intervals for combustion, so that two different coals can be stored in a common coal bunker at the same time, the lower part of the coal bunker is the original stored coal, the upper part of the coal bunker is the new loaded coal, the lower part of the original stored coal is gradually used up along with the continuous consumption of the coals, and the upper part of the new loaded coal leaves the coal bunker to enter the boiler for combustion. For operators, the approximate time of the new coal in the coal bunker leaving the coal bunker to enter the boiler for combustion needs to be grasped for combustion operation adjustment, and various combustion optimization and analysis also need to grasp the approximate time of the new coal entering the hearth.
The general operating personnel estimate or judge empirically according to the situation of the raw coal in the bunker, and this method has the following disadvantages:
(1) the time is not accurate;
(2) the time for switching between the original stored coal and the new coal cannot be acquired in real time.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a system and a method for automatically calculating the switching time of coal types in a coal bunker.
In order to achieve the purpose, the invention adopts the technical scheme that:
the automatic coal type switching time calculating system in the coal bunker comprises a coal bunker level meter 1 arranged on the coal bunker, a coal feeding flow meter 2 and a data acquisition system 3 are arranged on the coal bunker, the output ends of the coal feeding flow meter 2 and the data acquisition system 3 are connected with the input end of a data receiving system 4 through an existing network gate of a power station, the output end of the data receiving system 4 is connected with the input end of a data processing system 5, and the client end of a publishing system 6 is connected with the server end of the data processing system 5.
And at least one coal bunker level meter 1 is respectively positioned at the top of the coal bunker.
The coal bunker level meter 1 measures the height of the coal bunker level meter in the coal bunker in real time, the coal supply flow rate measured by the coal supply flow meter 2 in real time, and real-time data measured by the coal bunker level meter 1 and the coal supply flow meter 2 are collected and summarized through the data collection system 3.
The coal feeding flow meter 2 is positioned at the bottom of the coal bunker, and the data acquisition system 3 is positioned at the position of a production control area of the power station.
The data receiving system 4 is responsible for receiving and transferring real-time data to the data processing system 5 for data modification, and the data processing system 5 is used for automatically calculating the coal switching time in the coal bunker.
The coal bunker level gauge 1 and the coal feeding flow meter 2 are respectively connected with a coal bunker coal feeding system 7.
The coal bunker level meter 1 and the coal feeding flow meter 2 are used for automatic collection, and when a plurality of coal bunker level meters 1 are arranged, the height of the coal bunker level meters 1 is automatically averaged and output.
The data acquisition system 3(TPRI-DBproxy), the data receiving system 4(TPRI-DBproxy), the data processing system 5(TPRI-CalcStation) and the data issuing system 6(TPRI-SIS) are related software and servers; the coal bunker coal feeding system 7 is provided for the coal feeding system of the original power station, and provides a coal feeding signal data output mode according to the requirement to transmit the coal feeding signal data to the data acquisition system 3.
A method for automatically calculating the switching time of coal types in a coal bunker comprises the following steps;
step 1:
the functional relationship between the height of the coal bunker level meter 1 and the capacity of the coal bunker is obtained by pre-analysis as follows:
Vx＝f(Hx)
wherein, VxCoal bunker level gauge at HxCorresponding volume of coal stored at height, m3；
Hx-coal bunker level gauge height, m.
Step 2:
the data processing system 5 analyzes the coal bunker level gauge data in real time, when the coal bunker level gauge 1 data is increased from reduction, the new coal is shown to enter the coal bunker, and the data processing system 5 records the time t1And coal bunker level meter height H1；
And step 3:
the data processing system 5 calculates t according to the functional relationship between the height of the bin level gauge and the bin capacity1The formula of the original coal stored in the coal bunker at the moment is as follows:
M1＝ρV1＝ρf(H1)
wherein M is1Coal bunker level meter at t1The original coal quantity at the moment, t;
rho-bulk density of coal in stock, t/m3；
V1-coal bunker level gauge height H1Volume of coal stored in the hour, m3。
And 4, step 4:
from t, the data processing system 51The coal consumption is calculated according to the real-time coal feeder flow accumulation at any moment, and the calculation is as follows:
wherein M ist1+txCoal bunker level meter at t1Time begins to txThe calculated consumption of coal after the moment, t;
mt-real time flow of feeder, t/h.
And 5:
when M in the data processing system 5t1+txGreater than M1Record the time t2The time is the time for switching the running-out of the original coal and the new coal feeding, and t is the time2The new coal begins to leave the coal bunker;
step 6:
and (4) periodically correcting rho and correcting a calculation result.
In the step 2, the coal feeding signal of the coal bunker coal feeding system 7 is collected as the moment t when new coal enters the coal bunker1。
The invention has the beneficial effects that:
by the automatic calculation system and method for the coal type switching time in the coal bunker, the automatic calculation of the coal type switching in the coal bunker can be realized on the basis of utilizing the existing system, the original manual judgment mode is solved, and the accuracy, reliability and timeliness of the automatic calculation system and method are improved.
Due to the fact that the time for switching the coal types in the coal bunker can be timely and accurately judged, operating personnel can be reminded to conduct corresponding combustion adjustment according to the change of the coal quality, basic information is provided for boiler combustion operation adjustment, and meanwhile information of the coal types is provided for various combustion optimization and analysis.
Drawings
FIG. 1 is a schematic view of a bunker just before a new coal is supplied.
FIG. 2 is a schematic illustration of freshly-supplied and virgin coal in a bunker.
FIG. 3 is a schematic view of the new coal leaving the bunker.
Fig. 4 system layout.
Fig. 5 is a calculation flow chart.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-4:
1. according to the specific situation of a power plant, determining the design of an engineering implementation scheme:
according to the conditions of the network and the operating system, a specific system physical architecture is designed.
2. System installation
(1) A data acquisition system 3, a data receiving system 4, a data processing system 5, a data issuing system 6 and a coal bunker coal charging system 7 are installed on the server; (as shown in FIG. 4)
(2) One or more coal bunker level meters 1 are arranged at the top of the coal bunker; (as shown in FIG. 1)
(3) A coal feeding flow meter 2 is arranged at the bottom of the coal bunker; (as shown in FIG. 3)
(4) Accessing real-time data of the coal bunker level meter 1 and the coal feeding flowmeter 2 to a data acquisition system 3, and performing arithmetic average calculation on all data of the coal bunker level meter 1 in a data processing system 5 if a plurality of coal bunker level meters 1 are installed;
3. debugging
(1) Starting the coal feeder for 5 minutes, and checking whether the coal bunker level gauge 1 and the coal feeding flow meter 2 normally operate or not;
(2) starting the coal feeder, and simultaneously starting the arithmetic mean calculation of a coal bunker level meter 1 and the cumulative value calculation of coal consumption of a coal feeding flowmeter 2;
(3) and recording the calculation result in the previous step, and comparing with the manually measured data. If the data have large deviation, the system is adjusted to have test conditions;
4. verification test
(1) Measuring the bulk density rho of the original coal according to a standard bucket method;
(2) starting the data processing system 5 to record the original coal information in the coal feeder;
(3) starting the coal feeder for a period of time, and adding new coal into the coal bunker;
(4) when the data release system 6 sends a signal that new coal starts to leave the coal bunker, the coal feeder is closed;
(5) the coal sample in the feeder is inspected on site and compared to the previous coal stock and new coal, and if not the same as the coal stock, the new coal is said to have begun to leave the bunker.
5. Results of automatic calculation of coal type switching time
The operator can adjust and optimize the combustion of the boiler in time according to the result of the automatic calculation of the coal type switching time. The problem of boiler combustion caused by untimely correspondence during coal type switching can be avoided.
The invention can not only automatically calculate the switching time of the original coal in the coal bunker when the original coal is used up and the new coal leaves the coal bunker in real time, but also digitally store the switching time and the related data at the moment, thereby providing a data base for predicting the time of the new coal leaving the coal bunker.
Claims (10)
1. The system is characterized by comprising a bunker level meter (1) arranged on a bunker, a coal feeding flow meter (2) and a data acquisition system (3) are arranged on the bunker, the output ends of the coal feeding flow meter (2) and the data acquisition system (3) are connected with the input end of a data receiving system (4) through an existing network gate of a power station, the output end of the data receiving system (4) is connected with the input end of a data processing system (5), and the service end of the data processing system (5) is connected with a client end of a publishing system (6).
2. An automatic calculation system for the switching time of coal types in a coal bunker according to claim 1, characterized in that at least one of the coal bunker level meters (1) is respectively positioned at the top of the coal bunker.
3. The system for automatically calculating the coal type switching time in the coal bunker as claimed in claim 2, wherein the coal bunker level gauge (1) and the coal feeding flow meter (2) are used for automatic collection, and when a plurality of coal bunker level gauges (1) are arranged, the heights of the coal bunker level gauges (1) are automatically averaged and output.
4. An automatic calculation system for coal type switching time in a coal bunker according to claim 1, characterized in that the coal flow meter (2) and the data acquisition system (3) are used for real-time data acquisition of a coal bunker level meter and a coal feeding flow meter.
5. The system for automatically calculating the coal type switching time in the coal bunker according to claim 1, wherein the coal bunker level gauge (1) measures the height of the coal bunker level gauge in the coal bunker in real time, the coal supply flow rate measured by the coal supply flow meter (2) in real time, and real-time data measured by the coal bunker level gauge (1) and the coal supply flow meter (2) are collected and summarized through the data collection system (3).
6. The system for automatically calculating the coal type switching time in the coal bunker as claimed in claim 1, wherein the coal supply flow meter (2) is positioned at the bottom of the coal bunker, and the data acquisition system (3) is positioned at a production control area of the power station.
7. The system for automatically calculating the coal type switching time in the coal bunker as claimed in claim 1, wherein the data receiving system (4) is responsible for receiving and storing real-time data to the data processing system (5) for data modification, and the data processing system (5) is used for automatically calculating the coal type switching time in the coal bunker.
8. The system for automatically calculating the coal type switching time in the coal bunker as claimed in claim 1, wherein the coal bunker level meter (1) and the coal feeding flow meter (2) are respectively connected with a coal bunker charging system (7).
9. The method for the automatic calculation system of the coal type switching time in the coal bunker is characterized by comprising the following steps;
step 1:
the functional relation between the height of the coal bunker level gauge (1) and the capacity of the coal bunker is obtained through pre-analysis as follows:
Vx＝f(Hx)
wherein, VxCoal bunker level gauge at HxCorresponding volume of coal stored at height, m3；
Hx-coal bunker level gauge height, m;
step 2:
the data processing system (5) analyzes the coal bunker level gauge data in real time, when the coal bunker level gauge (1) data is increased from reduction, new coal enters the coal bunker, and the data processing system (5) records the time t1And coal bunker level meter height H1；
And step 3:
according to the functional relation between the height of the coal bunker level gauge and the capacity of the coal bunker, the data processing system (5) calculates t1The formula of the original coal stored in the coal bunker at the moment is as follows:
M1＝ρV1＝ρf(H1)
wherein M is1Coal bunker level meter at t1The original coal quantity at the moment, t;
rho-bulk density of coal in stock, t/m3；
V1-coal bunker level gauge height H1Volume of coal stored in the hour, m3。
And 4, step 4:
the data processing system (5) is operated from t1The coal consumption is calculated according to the real-time coal feeder flow accumulation at any moment, and the calculation is as follows:
wherein M ist1+txCoal bunker level meter at t1Time begins to txThe calculated consumption of coal after the moment, t;
mt-real time flow of feeder, t/h.
And 5:
when M in the data processing system 5t1+txGreater than M1Record the time t2The time is the time for switching the running-out of the original coal and the new coal feeding, and t is the time2The new coal begins to leave the coal bunker;
step 6:
and (4) periodically correcting rho and correcting a calculation result.
10. The method according to claim 9, wherein the step 2 is performed by collecting a coal feeding signal of the coal bunker coal feeding system (7) as a time t when new coal enters the coal bunker1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298783.8A CN112199867A (en) | 2020-11-19 | 2020-11-19 | System and method for automatically calculating coal type switching time in coal bunker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298783.8A CN112199867A (en) | 2020-11-19 | 2020-11-19 | System and method for automatically calculating coal type switching time in coal bunker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112199867A true CN112199867A (en) | 2021-01-08 |
Family
ID=74033550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011298783.8A Pending CN112199867A (en) | 2020-11-19 | 2020-11-19 | System and method for automatically calculating coal type switching time in coal bunker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112199867A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262869A (en) * | 2021-05-08 | 2021-08-17 | 西安热工研究院有限公司 | Coal crushing characteristic-based coal mill coal type switching device and discrimination method |
| CN113776616A (en) * | 2021-09-23 | 2021-12-10 | 华能伊春热电有限公司 | Method for improving capacity of raw coal hopper |
| CN113902311A (en) * | 2021-10-14 | 2022-01-07 | 华北电力科学研究院有限责任公司 | Coal conveying method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100330517A1 (en) * | 2006-05-01 | 2010-12-30 | Energy Technologies, Inc. | Continuous Real Time Heating Value (BTU)/Coal Flow Balancing Meter |
| CN104765743A (en) * | 2014-01-03 | 2015-07-08 | 浙江大唐乌沙山发电有限责任公司 | Method and system for displaying fired coal quality in real time |
| CN110823328A (en) * | 2019-11-04 | 2020-02-21 | 杭州集益科技有限公司 | Coal bunker coal type layering real-time monitoring method |
| CN213182751U (en) * | 2020-11-19 | 2021-05-11 | 华能南京金陵发电有限公司 | Automatic calculating device for coal type switching time in coal bunker |
-
2020
- 2020-11-19 CN CN202011298783.8A patent/CN112199867A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100330517A1 (en) * | 2006-05-01 | 2010-12-30 | Energy Technologies, Inc. | Continuous Real Time Heating Value (BTU)/Coal Flow Balancing Meter |
| CN104765743A (en) * | 2014-01-03 | 2015-07-08 | 浙江大唐乌沙山发电有限责任公司 | Method and system for displaying fired coal quality in real time |
| CN110823328A (en) * | 2019-11-04 | 2020-02-21 | 杭州集益科技有限公司 | Coal bunker coal type layering real-time monitoring method |
| CN213182751U (en) * | 2020-11-19 | 2021-05-11 | 华能南京金陵发电有限公司 | Automatic calculating device for coal type switching time in coal bunker |
Non-Patent Citations (1)
| Title |
|---|
| 魏勇;江学文;寿志杰;: "燃煤电厂煤仓动态监测及其在智能燃料系统中的应用", 中国设备工程, no. 18, 22 September 2020 (2020-09-22) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262869A (en) * | 2021-05-08 | 2021-08-17 | 西安热工研究院有限公司 | Coal crushing characteristic-based coal mill coal type switching device and discrimination method |
| CN113776616A (en) * | 2021-09-23 | 2021-12-10 | 华能伊春热电有限公司 | Method for improving capacity of raw coal hopper |
| CN113902311A (en) * | 2021-10-14 | 2022-01-07 | 华北电力科学研究院有限责任公司 | Coal conveying method and device |
| CN113902311B (en) * | 2021-10-14 | 2024-05-10 | 华北电力科学研究院有限责任公司 | Coal conveying method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112199867A (en) | System and method for automatically calculating coal type switching time in coal bunker | |
| CN110554164B (en) | On-line monitoring system and method for in-furnace coal quality for real-time operation control | |
| CN107054911B (en) | A kind of control system and method judged automatically and eliminate run coal bin chute blockage | |
| US11035712B2 (en) | Metering system for calculating real-time profit or loss of gas stations | |
| CN213182751U (en) | Automatic calculating device for coal type switching time in coal bunker | |
| CN108593055B (en) | Online automatic calibration method and system for pulverized coal mass flow meter | |
| CN110823328B (en) | Coal bunker coal type layering real-time monitoring method | |
| CN109785187B (en) | Method for correcting power supply coal consumption detection data of generator set | |
| CN106919127B (en) | Material level detection method based on software virtual technology | |
| CN112819653B (en) | System and method for online monitoring heat value difference between coal as fired and coal as fired | |
| CN210954018U (en) | On-line monitoring system for coal quality in furnace for real-time operation control | |
| CN104765743A (en) | Method and system for displaying fired coal quality in real time | |
| CN109253870A (en) | The assessment device and method in biomass fuel boiler heat-exchange tube service life | |
| CN108438910A (en) | One kind being used for economizer ash-transmission system anti-blocking monitoring system online | |
| CN113686409A (en) | Coal-fired power plant coal bunker powder level detection device and method thereof | |
| CN112283593A (en) | Internet of things system for closing valve and detecting leakage of pipe network and leakage detection method thereof | |
| JP7096339B2 (en) | Coke bin deposit measuring device | |
| CN201762088U (en) | Multi-point quick automatic detection device of fuel adding machine | |
| CN105509846A (en) | Electronic gas meter calibration device and method | |
| CN105784066A (en) | Method for material level on-line measurement of mine ultra-deep draw shaft undergoing redundant design | |
| CN117314706A (en) | Method for calculating carbon dioxide emission amount of coal-fired unit | |
| CN104571096A (en) | On-line fault diagnosis method and system of coal-fired power plant coal feeder | |
| CN106908353A (en) | Water-coal-slurry flowmeter and assay method based on Digital image technology | |
| CN209117875U (en) | A kind of laser length detection device | |
| CN206270203U (en) | A kind of new calcined coke joltpacked volume weight measurement apparatus and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |