CN208687755U - A kind of ash bucket steam heating control system - Google Patents
A kind of ash bucket steam heating control system Download PDFInfo
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- CN208687755U CN208687755U CN201821230276.9U CN201821230276U CN208687755U CN 208687755 U CN208687755 U CN 208687755U CN 201821230276 U CN201821230276 U CN 201821230276U CN 208687755 U CN208687755 U CN 208687755U
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- ash bucket
- ash
- control system
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Abstract
The utility model discloses a kind of ash bucket steam heating control systems, are used for coal-fired station's dust pelletizing system, including DCS control system, ash bucket temperature-measuring element, electric control valve；Ash bucket temperature-measuring element is equipped in each dust collector ash hopper of coal-fired station's dust pelletizing system；Electric control valve is equipped on each group dust collector ash hopper steam drainage general pipeline of coal-fired station's dust pelletizing system；DCS control system is connected with each ash bucket temperature-measuring element, each electric control valve respectively；DCS control system is connected with the steam(-)coil being arranged in each dust collector ash hopper of coal-fired station dust pelletizing system respectively.The utility model is realized by ash bucket temperature-measuring element to ash bucket temperature real-time monitoring, is sent to DCS control system, is passed through the temperature of each dust collector ash hopper of combustion adjustment to steam(-)coil；And by the electric control valve aperture on control steam drainage general pipeline, the efficient utilization to steam is realized.
Description
Technical field
The utility model relates to a kind of utilization of coal-fired station's dust pelletizing system high-efficiency steam and safe operation systems, belong to
Thermal power plant's energy-saving safe running technology field.
Background technique
Currently, coal fired thermal power plant removes entrained flying dust in flue gas using the deduster of the modes such as electrostatic, cloth bag, flying dust with
Sedimentation is collected to deduster lower part ash bucket after flue gas separation, then deduster is discharged by devices such as hopper bottom storehouse pumps.
To prevent moisture content in flue gas itself and flying dust from generating corrosion to ash bucket, while to prevent in flying dust because moisture content condenses
It is hardened to form flying dust, causes ash bucket ash discharge unsmooth, needs to keep the temperature each ash bucket and arrange heating in design and practical generation
Device, heating method generally use electric heating or steam to heat, and wherein steam heating is due to using non-renewable energy and securely and reliably
Etc. reasons, obtained more widely applying, North of Yangtze River area every year using the time generally more than half a year.But existing ash
There is also following main problems at present for the steam-heating system that struggles against: (1) ash bucket actual temperature does not measure monitoring；(2) complete in system
Portion's valve is to manually control, and can not dynamically be adjusted, and manual operation adjusts heavy workload；(3) each dedusting section ash bucket heating is uneven；
(4) vapour system valve is manual, and aperture is fixed, and can not be changed according to ash bucket actual temperature and constantly be adjusted, in actual motion, be
Guarantee ash bucket temperature, general valve is that standard-sized sheet mode is run, and steam utilization is low, causes to waste.
In addition in the pneumatic ash transmitting system largely used, defeated ash is completed using stored program control system, and defeated ash is program-controlled to use main pipe pressure
The pressure of power transmitter measurement judges whether defeated ash goes on smoothly and whether ash conveying pipe blocks.But existing system is gone back at present
There are following main problems: (1) transmitter is easy to be blocked by ash, can not accurately show；(2) when ash quantity is smaller, transmitter pressure
Change unobvious, operations staff is not easy interpretation, or even erroneous judgement；(3) operations staff needs to going to measure storehouse pump temperature or use on the spot
The mode that hand is touched judges whether blow tank conveying is normal indirectly.
Therefore it is energy saving, improve efficiency, equipment dependability, reduce labor intensity background under, it is necessary to it is right
Ash bucket steam-heating system and storehouse pump operation monitoring system optimize.
Summary of the invention
Purpose of the utility model is to solve defects existing in the prior art, and ash bucket can be heated by providing one kind
The device for carrying out intelligent control, improving steam utilization efficiency.
In order to achieve the above object, the utility model provides a kind of ash bucket steam heating control system, for coal-fired fire
Power power plant dust pelletizing system, including DCS control system, ash bucket temperature-measuring element, electric control valve；Coal-fired station
Ash bucket temperature-measuring element is equipped in each dust collector ash hopper of dust pelletizing system；The each group of coal-fired station's dust pelletizing system is removed
Electric control valve is equipped on dirt device ash bucket steam drainage general pipeline；DCS control system respectively with each ash bucket temperature-measuring element,
Each electric control valve is connected；DCS control system is set in each dust collector ash hopper of coal-fired station dust pelletizing system respectively
The steam(-)coil set is connected.
It is realized by ash bucket temperature-measuring element to ash bucket temperature real-time monitoring, DCS control system is sent to, by steaming
The temperature of each dust collector ash hopper of the combustion adjustment of vapour heating coil；And pass through the electric control valve on control steam drainage general pipeline
Aperture realizes the efficient utilization to steam.
Further, ash bucket steam heating control system further includes storehouse pump temperature measuring cell；Coal-fired station removes
Storehouse pump temperature measuring cell is equipped in the 1st group of each deduster storehouse pump of dirt system；DCS control system pumps temperature with each storehouse respectively
Measuring cell is spent to be connected.
By increasing the monitoring of storehouse pump temperature, defeated grey situation is mainly judged by ash conveying pipe pressure existing, is especially existed
Ash conveying pipe pressure change is small, in the case where being unfavorable for observation, increases other supplementary means, substantially reduces operations staff
Live thermometric workload.
Further, the storehouse pump is equipped in the 2nd group of each deduster storehouse pump of coal-fired station's dust pelletizing system
Temperature-measuring element；The DCS control system is connected with each storehouse pump temperature measuring cell respectively.
The utility model has the advantage that compared with prior art
1, the utility model realizes the real time monitoring to ash bucket temperature, facilitates operation operator to adjust ash bucket in time and adds
Hot equipment；Fortune especially can be exited in ash bucket heating system with auxiliary judgment ash bucket dust stratification situation to ash bucket temperature monitoring simultaneously
When row (such as summer), it can judge whether ash bucket has stifled ash to happen according to ash bucket temperature.
2 and real time partitioned control can be carried out to ash bucket temperature according to measurement temperature and set temperature, guarantee each ash bucket temperature
Degree is in control range；
3, valve control is electronic by being changed to manually, while realizing automatic control, be greatly decreased operations staff's operation element amount,
Labor intensity.And since electrically operated valve aperture is adjustable, eliminates and heats the case where steam is blindly put into existing operating system,
Improve utilization efficiency.
4, the addition of storehouse pump temperature monitoring mainly judges defeated grey situation by ash conveying pipe pressure existing, especially exists
Ash conveying pipe pressure change is small, in the case where being unfavorable for observation, increases other supplementary means, substantially reduces operations staff
Live thermometric workload.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model ash bucket steam heating control system.
In figure, the 1st group of dust collector ash hopper of 11-, the 2nd group of dust collector ash hopper of 12-, the 3rd group of dust collector ash hopper of 13-, 21- the 1st
Group deduster storehouse pump, the 2nd group of deduster storehouse pump of 22-, the 3rd group of deduster storehouse pump of 23-, 3- steam(-)coil, 4- ash bucket temperature
Measuring cell, the storehouse 5- pump temperature measuring cell, 6- steam drainage general pipeline, 7- electric control valve.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing.
As shown in Figure 1, the utility model ash bucket steam heating control system measures member by DCS control system, ash bucket temperature
Part 4, storehouse pump temperature measuring cell 5, electric control valve 7 form.
The utility model is equipped with ash bucket in each dust collector ash hopper 11,12,13 of coal-fired station's dust pelletizing system
Temperature-measuring element 4, and pump to install in 21 and the 2nd groups of deduster storehouse pumps 22 in the 1st group of big deduster storehouse of ash quantity and be pumped equipped with storehouse
The 3rd deduster storehouse temperature-measuring element 5(pump 23 can be without the installation of storehouse pump temperature measuring cell).And by coal-fired thermal power generation
Original manually-operated gate replaces with electric control valve 7 on each group dust collector ash hopper steam drainage general pipeline 6 of factory's dust pelletizing system.
DCS control system is connected with each ash bucket temperature-measuring element, each electric control valve, each storehouse pump temperature measuring cell 5 respectively.
DCS control system is connected with the steam(-)coil 3 being arranged in each dust collector ash hopper respectively.It can be wrapped for every group in the deduster of #1 ~ 3 group
Containing more ash buckets, on electrostatic precipitator, each electric field is one group of ash bucket, and every group of ash bucket ash quantity deviation is little in operation, greatly
It causes equal.The present embodiment actually can be multiple groups for every group of four dust collector ash hoppers with three groups of dust collector ash hoppers；Into vapour hand
Movable valve, ash bucket temperature-measuring element configure one using every ash bucket；Electric control valve is in every group of ash bucket steam drainage
One is configured on general pipeline, every ash bucket is not required to be separately configured.The 1st group of deduster #4 ash bucket and the measurement of storehouse pump temperature are only drawn in figure
Line between element and DCS control system measuring signal input terminal, remaining line omit.Wherein, ash bucket temperature-measuring element, storehouse pump
Existing temperature sensor can be used in temperature-measuring element.
Ash bucket temperature measurement signal inputs unit DCS control system by cable, by automatic control module in DCS to setting
Definite value is respectively adjusted each group dust collector ash hopper heating electric control valve, compared with measured value carries out analysis such as ash bucket
Temperature is higher than setting value and then turns down corresponding electric control valve, and temperature is then opened big corresponding electric control valve lower than setting value, risen
It is accurately adjusted to same group of dust collector ash hopper temperature, improves steam utilization efficiency, improve the full factory's thermal effect of coal-fired power plant to reach
Rate, energy saving purpose.Storehouse pump temperature measuring signal inputs unit DCS control system, the basis in DCS system by cable
The investment situation of deduster, ash-transmission system generates monitoring curve, pumps grey current intelligence to storehouse according to monitoring temperature and is monitored,
Early warning is carried out to stifled ash, is combined with defeated ash is program-controlled, defeated ash security and stability is improved.
Claims (3)
1. a kind of ash bucket steam heating control system is used for coal-fired station's dust pelletizing system, it is characterised in that: including DCS
Control system, ash bucket temperature-measuring element, electric control valve；Each deduster ash of coal-fired station's dust pelletizing system
The ash bucket temperature-measuring element is equipped in bucket；The each group dust collector ash hopper steam of coal-fired station's dust pelletizing system
The electric control valve is equipped on bilge main；The DCS control system respectively with each ash bucket temperature-measuring element, each electricity
Dynamic control valve is connected；The DCS control system is set in each dust collector ash hopper of coal-fired station dust pelletizing system respectively
The steam(-)coil set is connected.
2. ash bucket steam heating control system according to claim 1, it is characterised in that: the ash bucket steam computer heating control system
System further includes storehouse pump temperature measuring cell；In the 1st group of each deduster storehouse pump of coal-fired station's dust pelletizing system
Equipped with the storehouse pump temperature measuring cell；The DCS control system is connected with each storehouse pump temperature measuring cell respectively.
3. ash bucket steam heating control system according to claim 2, it is characterised in that: the coal-fired station removes
The storehouse pump temperature measuring cell is equipped in the 2nd group of each deduster storehouse pump of dirt system；The DCS control system respectively with
Each storehouse pump temperature measuring cell is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821230276.9U CN208687755U (en) | 2018-08-01 | 2018-08-01 | A kind of ash bucket steam heating control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821230276.9U CN208687755U (en) | 2018-08-01 | 2018-08-01 | A kind of ash bucket steam heating control system |
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| Publication Number | Publication Date |
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| CN208687755U true CN208687755U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821230276.9U Active CN208687755U (en) | 2018-08-01 | 2018-08-01 | A kind of ash bucket steam heating control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112947623A (en) * | 2021-01-27 | 2021-06-11 | 华能国际电力股份有限公司营口电厂 | Intelligent control method for electric dust removal and ash conveying steam heat tracing system |
-
2018
- 2018-08-01 CN CN201821230276.9U patent/CN208687755U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112947623A (en) * | 2021-01-27 | 2021-06-11 | 华能国际电力股份有限公司营口电厂 | Intelligent control method for electric dust removal and ash conveying steam heat tracing system |
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Address after: 210033 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee after: Guoneng Nanjing Electric Power Test Research Co.,Ltd. Address before: 210033 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee before: GUODIAN NANJING ELECTRIC POWER TEST RESEARCH Co.,Ltd. |