CN213182751U - Automatic calculating device for coal type switching time in coal bunker - Google Patents
Automatic calculating device for coal type switching time in coal bunker Download PDFInfo
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- CN213182751U CN213182751U CN202022689164.3U CN202022689164U CN213182751U CN 213182751 U CN213182751 U CN 213182751U CN 202022689164 U CN202022689164 U CN 202022689164U CN 213182751 U CN213182751 U CN 213182751U
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Abstract
The utility model discloses a coal kind switching time automatic calculation device in coal bunker, include and arrange coal bunker level gauge on giving the coal bunker, coal-feeding flowmeter and data acquisition system have been arranged on the coal bunker, and the output of coal-feeding flowmeter and data acquisition system passes through the existing net floodgate in power station and connects data receiving system's input, and data processing system's input is connected to data receiving system's output, and data processing system's server end is connected to the customer end of publishing system. The utility model discloses utilize the coal bunker level gauge real-time measurement's before the new coaling gets into the coal bunker height, the coal feeding flowmeter real-time measurement's the coal supply flow, the real-time automatic calculation in the coal bunker in the stokehole coal run out with the new switching time that the coaling left the coal bunker.
Description
Technical Field
The utility model relates to a soft measurement technical field of industry coal fired boiler and power plant coal fired boiler, in particular to coal kind switching time automatic calculation device in 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 deficiencies of the prior art, the utility model aims to provide a coal type switching time automatic calculation device in coal bunker, the device utilize the coal bunker level gauge real-time measurement's before the new coaling gets into the coal bunker height, the coal feeding flow of coal feeding flowmeter real-time measurement, provide basic technical support for the switching time that the raw and stored coal used up and new coaling left the coal bunker in the real-time automatic calculation coal bunker.
In order to realize the purpose, the utility model discloses a technical scheme is:
the utility model provides a coal kind switching time automatic computation device in coal bunker, includes the coal bunker level meter 1 of arranging on the coal bunker, coal-feeding flowmeter 2 and data acquisition system 3 have been arranged on the coal bunker, and the output of coal-feeding flowmeter 2 and data acquisition system 3 passes through the existing net floodgate in power station and connects the input of data receiving system 4, and the input of data processing system 5 is connected to the output of data receiving system 4, and the service end of data processing system 5 is connected to the customer end of publishing system 6.
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.
Based on the following steps of the calculation method, the coal bunker level meter 1 needs to arrange 1-3 coal bunker level meters on the coal bunker, and can realize the real-time acquisition of the height of the coal bunker level meter. The coal feeding flowmeter 2 is arranged on or in front of or behind the coal feeder, and can realize the real-time flow acquisition of the coal feeder. The coaling signal of the bunker coaling system 7 should be able to have a real-time output and be able to give a signal to which bunker. According to the specific requirements of the coal bunker level meter and the coal feeding flowmeter, the calibration is required to be carried out regularly to ensure that the precision of the measured data meets the delivery requirements of the instrument.
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 utility model has the advantages that:
through the automatic calculation device for the coal type switching time in the coal bunker, a relevant data base can be provided for realizing the automatic calculation of the coal type switching in the coal bunker on the basis of utilizing the existing system, the original manual judgment mode is solved, and the accuracy, the reliability and the timeliness are improved.
Because the device can provide the basis for timely and accurately judging the coal type switching time in the coal bunker, the operating personnel can be reminded to carry out corresponding combustion adjustment according to the change of the coal quality, basic information is provided for the combustion operation adjustment of the boiler, and meanwhile, the information of the coal type 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.
Utilize the utility model discloses not only can real-time automatic calculation in the coal bunker raw and stored coal use up and new coal leave the switching time of coal bunker, can carry out the digital storage with the time of switching moreover to and this relevant data constantly, provide the data basis for the follow-up time that carries out new coal and leave the coal bunker predicts.
Claims (8)
1. The utility model provides a coal kind switching time automatic computation device in coal bunker which characterized in that, includes arranges coal bunker level gauge (1) on the coal bunker, arrange coal-feeding flowmeter (2) and data acquisition system (3) on the coal bunker, the input of data receiving system (4) is connected through the existing net floodgate in power station to the output of coal-feeding flowmeter (2) and data acquisition system (3), the input of data processing system (5) is connected to the output of data receiving system (4), the customer end of publishing system (6) is connected to the service end of data processing system (5).
2. An automatic calculation device 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 device for automatically calculating the coal type switching time in the coal bunker according to 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. The automatic calculating device for the switching time of the coal types in the coal bunker according to the claim 1 is characterized in that 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 the 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 collecting system (3).
5. The automatic calculating device for the coal switching time in the coal bunker according to claim 1, characterized in that the coal flow meter (2) and the data acquisition system (3) are used for the real-time data acquisition of the coal bunker level meter and the coal feeding flow meter.
6. The automatic calculating device for the switching time of the coal types in the coal bunker as claimed in claim 1, characterized in that the coal supply flow meter (2) is positioned at the bottom of the coal bunker, and the data acquisition system (3) is positioned at the production control area of the power station.
7. The device for automatically calculating the coal 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 switching time in the coal bunker.
8. The automatic calculating device for the coal type switching time in the coal bunker according to claim 1, characterized in that the coal bunker level gauge (1) and the coal feeding flow meter (2) are respectively connected with a coal bunker charging system (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022689164.3U CN213182751U (en) | 2020-11-19 | 2020-11-19 | Automatic calculating device for coal type switching time in coal bunker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022689164.3U CN213182751U (en) | 2020-11-19 | 2020-11-19 | Automatic calculating device for coal type switching time in coal bunker |
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| CN213182751U true CN213182751U (en) | 2021-05-11 |
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