CN210772277U - Air preheater monitoring and early warning system - Google Patents
Air preheater monitoring and early warning system Download PDFInfo
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- CN210772277U CN210772277U CN201921090951.7U CN201921090951U CN210772277U CN 210772277 U CN210772277 U CN 210772277U CN 201921090951 U CN201921090951 U CN 201921090951U CN 210772277 U CN210772277 U CN 210772277U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses an air preheater control early warning system, including sensing module, data storage and analysis module, monitoring module, control system and execution module, sensing module passing signal line electricity links data storage and analysis module, data storage and analysis module passing signal line electricity link monitoring module, monitoring module passing signal line electricity links control system, control system passing signal line electricity links execution module and alarm device respectively. The utility model discloses when appearing unusual in air preheater operational environment, can in time solve and report to the police, let the staff in time know the condition to done the precaution measure, improved air preheater operational environment's security greatly, guaranteed air preheater and unit normal operating, avoided the emergence of harmful effects, the utility model is scientific and reasonable, use back safe and reliable, be fit for using widely.
Description
Technical Field
The utility model relates to an air preheater control early warning system.
Background
The air preheater is the equipment that must use in the power boiler flue, the air preheater is at the during operation, because the environment in the flue is more abominable, the condition is more complicated, so various abnormities can appear in the air preheater often, thereby influence the normal work of whole flue system, so need know at any time the operational environment and the working condition of air preheater, so that guarantee the normal work of whole flue system, current air preheater at the during operation, do not have monitored control system, can not master the operational aspect and the operational environment of air preheater at any time, often can be just discover when the problem appears, then solve again, there is very big influence to whole unit normal operating, for this, the utility model provides an air preheater monitoring and early warning system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide an air preheater control early warning system, solved current air preheater at the during operation, do not have monitored control system, can not master the behavior and the operational environment of air preheater at any time, often can just discover when the problem appears, then solve again, have the problem of very big influence to whole flue system's normal operating like this.
The utility model provides a technical scheme that above-mentioned problem adopted is: the utility model provides an air preheater control early warning system, includes sensing module, data storage and analysis module, monitoring module, control system and execution module, its characterized in that: the sensing module passes through signal line electricity and links data storage and analysis module, data storage links monitoring module with analysis module through signal line electricity, monitoring module passes through signal line electricity and links control system, control system passes through signal line electricity respectively and links execution module and alarm device.
Further, the sensing module comprises a thermocouple, a differential pressure transmitter, a flue gas analyzer and NH3Concentration analyzer, SO3A concentration analyzer.
Further, the monitoring module comprises a cold end comprehensive temperature comparison module, a flue gas side pressure difference comparison module, an ammonia concentration comparison module and SO3And a concentration comparison module.
Further, the control system is a PLC control system.
Further, the execution module comprises a warm air blower, a soot blowing system, an ammonia spraying system and an SO3And (4) a removal system.
Furthermore, the number of the thermocouples is multiple, the thermocouples are respectively arranged at temperature measuring points at the cold end, the hot end and the middle layer of the smoke side of the air preheater, and the thermocouples are respectively arranged at the primary air inlet and the secondary air inlet of the air preheater.
Further, the differential pressure transmitter is arranged at the smoke side inlet and outlet of the air preheater.
Further, the flue gas analyzer and NH3Concentration analyzer and SO3The concentration analyzer is connected with a detection point at the inlet of the air preheater.
Compared with the prior art, the utility model, have following advantage and effect: this air preheater control early warning system, can detect various parameters in the air preheater operational environment, and store data, can in time handle the abnormal conditions that appear in the air preheater operational environment, in time solve these abnormal conditions, avoid the emergence of major accident, and simultaneously, when the abnormal conditions appears in the air preheater operational environment, can in time report to the police, let the staff in time know the condition, thereby done the precaution measure, air preheater operational environment's security has been improved greatly, whole flue system work's normal has been guaranteed, the emergence of harmful effects has been avoided, the utility model discloses scientific and reasonable, safe and reliable after the use, and is suitable for being generalized to use.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1-sensing module, 101-thermocouple, 102-differential pressure transmitter, 103-flue gas analyzer, 104-NH3Concentration analyzer, 105-SO3The system comprises a concentration analyzer, a 2-data storage and analysis module, a 3-monitoring module, a 301-cold end comprehensive temperature comparison module, a 302-flue gas side pressure difference comparison module, a 303-ammonia concentration comparison module, and a 304-SO3Concentration comparison module, 4-control system, 5-execution module, 501-air heater, 502-soot blowing system, 503-ammonia spraying system and 504-SO3A removal system and a 6-alarm device.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Referring to fig. 1, it can be seen that: the air preheater monitoring and early warning system in the embodiment comprises a sensing module 1, a data storage and analysis module 2, a monitoring module 3, a control system 4 and an execution module 5, the sensing module 1 is electrically connected with the data storage and analysis module 2 through a signal wire, the data storage and analysis module 2 is electrically connected with the monitoring module 3 through a signal wire, the monitoring module 3 is electrically connected with the control system 4 through a signal wire, the control system 4 is respectively electrically connected with the execution module 5 and an alarm device 6 through a signal wire, the alarm device 6 can give an alarm when various parameter data in the working environment of the air preheater are abnormal, and a worker can rapidly know the situation conveniently.
The sensing module 1 comprises a thermocouple 101, a differential pressure transmitter 102, a flue gas analyzer 103, NH3 Concentration analyzer 104, SO3Concentration analyzer 105, thermocouple 101, differential pressure transmitter 102, flue gas analyzer 103, NH3Concentration analyzer 104, SO3The concentration analyzer 105 is capable of detecting various parameters within the air preheater operating environment; the monitoring module 3 comprises a cold end comprehensive temperature comparison module 301, a flue gas side pressure difference comparison module 302, an ammonia concentration comparison module 303 and SO3 Concentration comparison module 304, cold end comprehensive temperature comparison module 301 and flue gas side pressure differenceComparison module 302, ammonia concentration comparison module 303 and SO3Data range values of relevant parameters are respectively set in the concentration comparison module 304 and are used for comparing data detected by corresponding equipment in the monitoring module 3, and the data storage and analysis module 2 and the monitoring module 3 only need to use existing mature technology equipment; the control system 4 is a PLC control system which is a controller in the prior art and can control the execution module 5 to work; the execution module 5 comprises a fan heater 501, a soot blowing system 502, an ammonia spraying system 503 and SO3 A removal system 504, a fan heater 501, a soot blowing system 502, an ammonia spraying system 503 and SO3The removal system 504 is a mature technology in the existing flue system, and can solve various abnormalities in the working environment of the air preheater by matching with the instruction of the control system 4.
The utility model discloses a theory of operation and advantage: a plurality of thermocouples 101 are respectively arranged at temperature measuring points of a cold end, a hot end and a middle layer of a flue gas side of the air preheater, the thermocouples 101 are respectively arranged at a primary air inlet and a secondary air inlet of the air preheater, a differential pressure transmitter 102 is arranged at a flue gas side inlet and outlet of the air preheater, a flue gas analyzer 103 and NH are arranged at the inlet of the air preheater3Concentration analyzer 104 and SO3The detection point of the concentration analyzer 105, the temperature measured by the thermocouples 101, the pressure difference on the flue gas side measured by the differential pressure transmitter 102, the analysis of the flue gas components by the flue gas analyzer 103, NH3Concentration analyzer 104 for NH3Analysis of concentration and SO3Concentration analyzer 105 for SO3The results of the concentration analysis are respectively transmitted to the data storage and analysis module 2 for storage and analysis, and the data storage and analysis module 2 then transmits the thermocouple 101, the differential pressure transmitter 102 and the NH to the data storage and analysis module 23 Concentration analyzer 104 and SO3Data measured by the concentration analyzer 105 are transmitted to the monitoring module 3, and a cold end comprehensive temperature comparison module 301, a flue gas side pressure difference comparison module 302, an ammonia concentration comparison module 303 and an SO in the monitoring module 33The concentration comparison module 304 compares the detection data transmitted from the data storage and analysis module 2, and the cold end comprehensive temperature comparison module 301, the flue gas side pressure difference comparison module 302, the ammonia concentration comparison module 303 and the SO3Concentration comparison module 304All have set values, if various data transmitted by the data storage and analysis module 2 exceed the cold end comprehensive temperature comparison module 301, the flue gas side pressure difference comparison module 302, the ammonia concentration comparison module 303 and the SO3The concentration comparison module 304 sets the value range, the monitoring module 3 transmits the signal to the control system 4, and the control system 4 controls the air heater 501, the soot blowing system 502, the ammonia spraying system 503 and the SO in the execution module 53The desorption system 504 works, the air heaters 501 respectively correspond to detection points of a plurality of thermocouples 101, the soot blowing system 502 corresponds to detection points of the differential pressure transmitter 102, and the ammonia spraying system 503 and NH3The detection points of the concentration analyzer 104 correspond to each other, SO3Removal system 504 and SO3The detection points of the concentration analyzer 105 correspond to each other, when the temperature of the detection point of the thermocouple 101 is abnormal, the air heater 501 works to solve the problem of temperature abnormality, when the pressure difference data of the smoke side inlet and outlet of the air preheater is abnormal, the soot blowing system 502 works to solve the problem of abnormal pressure difference of the smoke side inlet and outlet of the air preheater, at NH3Concentration and SO3When the concentration data is abnormal, the ammonia spraying system 503 and SO3The removal system 504 works to resolve the NH3Concentration and SO3And the control system 4 also controls the alarm device 6 to give an alarm to ensure that the worker knows the abnormal situation at the first time, so that the worker can prepare a coping method at the first time conveniently, and can observe whether the abnormal data is successfully solved by the execution module 5, thereby greatly improving the safety and reliability of the operation of the equipment. The utility model has the advantages of being scientific and reasonable in structure, it is effectual to use the control early warning, and safe and reliable is fit for using widely.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be construed as being included in the following claims.
Claims (5)
1. An air preheater monitoring and early warning system comprises a sensing module (1), a data storage and analysis module (2) and a monitoring moduleBlock (3), control system (4) and execution module (5), characterized in that: the sensing module (1) is electrically connected with the data storage and analysis module (2) through a signal wire, the data storage and analysis module (2) is electrically connected with the monitoring module (3) through a signal wire, the monitoring module (3) is electrically connected with the control system (4) through a signal wire, and the control system (4) is respectively and electrically connected with the execution module (5) and the alarm device (6) through signal wires; the sensing module (1) comprises a thermocouple (101), a differential pressure transmitter (102), a flue gas analyzer (103) and NH3Concentration analyzer (104), SO3A concentration analyzer (105); the monitoring module (3) comprises a cold end comprehensive temperature comparison module (301), a flue gas side pressure difference comparison module (302), an ammonia concentration comparison module (303) and SO3A concentration comparison module (304); the execution module (5) comprises a warm air blower (501), a soot blowing system (502), an ammonia spraying system (503) and SO3A removal system (504).
2. The air preheater monitoring and early warning system of claim 1, wherein: the control system (4) is a PLC control system.
3. The air preheater monitoring and early warning system of claim 1, wherein: the number of the thermocouples (101) is multiple, the thermocouples (101) are respectively arranged at temperature measuring points at the cold end, the hot end and the middle layer of the smoke side of the air preheater, and the thermocouples (101) are respectively arranged at the primary air inlet and the secondary air inlet of the air preheater.
4. The air preheater monitoring and early warning system of claim 1, wherein: the differential pressure transmitter (102) is arranged at the smoke side inlet and outlet of the air preheater.
5. The air preheater monitoring and early warning system of claim 1, wherein: the flue gas analyzer (103) and NH3Concentration analyzer (104) and SO3Concentration analyzer (105)And the detection point is connected to the inlet of the air preheater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921090951.7U CN210772277U (en) | 2019-07-12 | 2019-07-12 | Air preheater monitoring and early warning system |
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| CN201921090951.7U CN210772277U (en) | 2019-07-12 | 2019-07-12 | Air preheater monitoring and early warning system |
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| CN210772277U true CN210772277U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425566A (en) * | 2019-07-12 | 2019-11-08 | 华电电力科学研究院有限公司 | A kind of air preheater monitoring early-warning system and its working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425566A (en) * | 2019-07-12 | 2019-11-08 | 华电电力科学研究院有限公司 | A kind of air preheater monitoring early-warning system and its working method |
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