CN210014354U - Intelligent soot blowing system of circulating fluidized bed boiler - Google Patents
Intelligent soot blowing system of circulating fluidized bed boiler Download PDFInfo
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- CN210014354U CN210014354U CN201920548615.6U CN201920548615U CN210014354U CN 210014354 U CN210014354 U CN 210014354U CN 201920548615 U CN201920548615 U CN 201920548615U CN 210014354 U CN210014354 U CN 210014354U
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Abstract
An intelligent soot blowing system of a circulating fluidized bed boiler comprises an SIS system server, a DCS system host, a soot blower group, a cabinet, an intelligent soot blowing server, a data exchanger and a signal converter, wherein the intelligent soot blowing server reads data from the SIS system server through the data exchanger in a network communication mode, and an intelligent soot blowing software module, a data communication module and a data verification module are deployed on the intelligent soot blowing server.
Description
Technical Field
The utility model relates to a boiler blows grey system, specifically is a circulating fluidized bed boiler intelligence blows grey system.
Background
The circulating fluidized bed boiler has great difference from common power station boilers such as front and rear wall opposed firing boilers, four-corner tangential firing boilers and the like due to the structure and the firing mode, has great difference between a wind smoke system and a steam-water system, and is also more suitable for inferior coal types with low heat value, high ash content and large ash content. Although most of the intelligent soot blowing systems of common power station boilers are researched at present, the research data of the intelligent soot blowing systems of the circulating fluidized bed boilers are less. Due to the particularity of the coal quality of the circulating fluidized bed boiler, the abrasion and corrosion of ash and dirt on each heating surface of the boiler, the service life and the heat exchange effect are more seriously influenced, so that the research is more necessary. The invention combines the structure of the circulating fluidized bed boiler and the particularity of the components of the burning coal, improves the defects of the flue gas temperature monitoring of the heating surface at the tail part of the circulating fluidized bed boiler and the monitoring of a steam-water system, perfects a data acquisition system and a soot blowing control system, realizes the combination of intelligent soot blowing and a program control system, avoids the influence of excessive blowing or insufficient blowing on the operation safety and the economical efficiency of the circulating fluidized bed boiler, and improves the operation efficiency and the safety of the circulating fluidized bed boiler.
Disclosure of Invention
In order to avoid serious pollution caused by insufficient blowing of the heating surface of the circulating fluidized bed boiler and blowing loss caused by excessive blowing, the monitoring system of the tail superheater, the reheater and each stage of economizer is improved by combining the characteristics of boiler combustion and coal quality, intelligent soot blowing and program-controlled soot blowing are realized, and the safety and the economical efficiency of boiler operation are improved.
The utility model provides a technical problem's technical scheme does:
an intelligent soot blowing system of a circulating fluidized bed boiler comprises an SIS system server, a DCS system host, a soot blower group, a cabinet, an intelligent soot blowing server, a data exchanger and a signal converter, wherein the intelligent soot blowing server reads data from the SIS system server through the data exchanger in a network communication mode, and an intelligent soot blowing software module, a data communication module and a data verification module are deployed on the intelligent soot blowing server.
An intelligent data front-end system of a circulating fluidized bed boiler comprises an intelligent data front end, a smoke inlet temperature measuring point and an outlet temperature measuring point of a low-temperature reheater, a smoke inlet temperature measuring point and an outlet temperature measuring point of a low-temperature superheater, a smoke outlet temperature measuring point of a tertiary economizer, a smoke inlet temperature measuring point and an outlet temperature measuring point of a secondary economizer, a smoke outlet temperature measuring point of a primary economizer, a smoke inlet temperature measuring point and a smoke outlet measuring point of an air preheater, a steam-water outlet temperature measuring point and a steam-water inlet temperature measuring point of a low-temperature reheater and a steam-water inlet pressure measuring device, a steam-water outlet temperature measuring point and an inlet temperature measuring point of a low-temperature superheater, a steam-water outlet temperature measuring point and an inlet temperature measuring point of a tertiary economizer, a steam-water inlet temperature measuring point of a secondary economizer, a steam-water inlet temperature measuring point and a, A compensation cable and a signal cable; the flue gas inlet temperature measuring point and the flue gas outlet temperature measuring point are respectively arranged on the side wall of the circulating fluidized bed boiler flue 18, and the steam-water inlet temperature measuring point and the steam-water outlet temperature measuring point, the steam-water inlet pressure measuring device and the flow device are respectively arranged on inlet and outlet pipelines corresponding to the low-temperature superheater, the low-temperature reheater, the primary economizer, the secondary economizer and the tertiary economizer. Each circulating fluidized bed boiler is respectively provided with an intelligent data front-end system; the front end of the intelligent data is respectively connected with the smoke temperature measuring points and the steam-water temperature measuring points through compensation cables to realize the uploading of temperature signals, and is respectively connected with the pressure measuring device and the flow measuring device through signal cables to realize the transmission of pressure and flow signals; the intelligent data front end of the intelligent data front end system of each circulating fluidized bed boiler is connected with the DCS host through a communication cable to realize data transmission, and the DCS host is connected with an SIS system server shared by the two unit boilers through the communication cable to transmit data.
The smoke temperature measuring point, the steam-water temperature measuring point, the pressure measuring device and the flow measuring device of the intelligent data front-end system of the two circulating fluidized bed boilers are arranged in the same way. The arrangement of the two boiler flue gas temperature measuring points, the steam-water temperature measuring point, the pressure measuring device and the flow measuring device makes up the deficiency of soot blowing monitoring parameters of the circulating fluidized bed boiler, and provides important parameters and basis for intelligent soot blowing optimization calculation.
The inlet and outlet smoke temperature measuring points in the intelligent data front-end system of the two circulating fluidized bed boilers are all wear-resistant protective sleeves, and the thickness of each wear-resistant protective sleeve is more than 12 mm. Because the burning dust particles of the circulating fluidized bed boiler are thick and large in quantity, the smoke temperature measuring points are seriously abraded, the service life of the smoke temperature measuring points can be prolonged by adopting a thick wear-resistant protective sleeve, and the normal smoke temperature data required by the calculation of the intelligent soot blowing system is ensured.
The intelligent soot blowing server reads data from the SIS system server in a network communication mode through the data switch, the intelligent soot blowing server, the data switch and the SIS system server are communicated through a communication cable, an intelligent soot blowing software module, a data communication module and a data verification module are arranged on the intelligent soot blowing server, and the intelligent soot blowing server is mainly used for verifying and preprocessing collected data, analyzing, calculating and judging intelligent soot blowing, realizing data communication and sending an intelligent soot blowing alarm signal.
The intelligent soot blowing alarm systems of the two circulating fluidized bed boiler intelligent soot blowing systems respectively consist of a signal converter, a hard wire and an alarm picture in a DCS system host, wherein one end of the hard wire is connected with the signal converter, the other end of the hard wire is connected and communicated with the DCS system host, the soot blowing alarm systems of the two units share one signal converter, and the signal converter has the function of converting digital signals or analog quantity signals into switching quantity signals; hard-wired lines in the two sets of intelligent soot blowing alarm system drawings respectively draw a representation, and the specific number of the hard-wired lines is determined according to the number of the alarm pictures.
The soot blowing program control system of each circulating fluidized bed boiler intelligent soot blowing system is respectively composed of program control software installed in each DCS system host, each controller and a soot blower group, each controller transmits execution signals with each DCS system host and the soot blower group through control cables, and alarm signal communication logics are arranged between alarm image alarm signals in each DCS system host and the program control software installed in each DCS system host to ensure the safety of soot blowing operation, so that the link of the intelligent soot blowing and the soot blowing systems is realized.
The data switch, the intelligent soot blowing server and the signal converter which are shared by the two units are installed in the cabinet, and the SIS system server, the DCS system host and the cabinet are arranged in the electronic repeater.
The intelligent soot blowing monitoring systems of the two circulating fluidized bed boiler intelligent soot blowing systems respectively read the intelligent soot blowing signals from the shared intelligent soot blowing server or the SIS system server in a communication mode through the shared exchanger, so that the client browsing of the intelligent soot blowing system is realized. The intelligent soot blowing monitoring systems of the two boilers are all arranged in a shared centralized control chamber.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention
FIG. 2 is a schematic diagram of the monitoring of the steam-water system of the present invention
Detailed Description
In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.
The present invention will be further described with reference to the accompanying drawings.
An intelligent soot blowing system of a circulating fluidized bed boiler comprises an SIS system server 3, a boiler DCS system host 12, another boiler DCS system host 2, a soot blower group, a cabinet 8, an intelligent soot blowing server 5, a data exchanger 4 and a signal converter 10, wherein the intelligent soot blowing server 3 reads data from the SIS system server 3 through the data exchanger 4 in a network communication mode, and an intelligent soot blowing software module, a data communication module and a data verification module are deployed on the intelligent soot blowing server 5.
An intelligent data front-end system of a circulating fluidized bed boiler comprises an intelligent data front end 13, a flue gas inlet temperature measuring point 15 and an outlet temperature measuring point 14 of a low-temperature reheater 16, a flue gas inlet temperature measuring point 17 and an outlet temperature measuring point 19 of a low-temperature superheater 20, a flue gas outlet temperature measuring point 23 of a tertiary economizer 24, a flue gas inlet temperature measuring point 25 and an outlet temperature measuring point 27 of a secondary economizer 26, a flue gas outlet temperature measuring point 29 of a primary economizer 28, a flue gas inlet temperature measuring point 30 and a flue gas outlet measuring point 32 of an air preheater 31, a steam water outlet temperature measuring point 37 and a steam water inlet temperature measuring point 35 of the low-temperature reheater 16 and a steam water inlet pressure measuring device 36, a steam water outlet temperature measuring point 38 and an inlet temperature measuring point 39 of the low-temperature superheater 20, a steam water outlet temperature measuring point 40 and an inlet temperature measuring point 41 of the tertiary economizer 24, a steam water inlet temperature measuring, A steam-water inlet temperature measuring point 45 of the primary economizer 28, a steam-water pressure measuring device 43, a flow device 44, a compensation cable and a signal cable; the flue gas inlet temperature measuring point and the flue gas outlet temperature measuring point are respectively arranged on the side wall of the circulating fluidized bed boiler flue 18, and the steam-water inlet temperature measuring point, the steam-water outlet temperature measuring point, the steam-water inlet pressure measuring device and the flow device are respectively arranged on inlet and outlet pipelines corresponding to the low-temperature reheater 16, the low-temperature superheater 20, the primary economizer 28, the secondary economizer 26 and the tertiary economizer 24; each circulating fluidized bed boiler is respectively provided with an intelligent data front-end system; the intelligent data front end 13 is respectively connected with the smoke temperature measuring points and the steam-water temperature measuring points through compensation cables to realize the uploading of temperature signals, and is respectively connected with the pressure measuring device and the flow measuring device through signal cables to realize the transmission of pressure and flow signals; the intelligent data front-end system of one circulating fluidized bed boiler realizes data transmission with the DCS system host 12 through the intelligent data front-end 13, and the DCS system host 12 transmits data to the SIS system server 3 shared by the two unit boilers.
The intelligent data front-end system of another circulating fluidized bed boiler 34 transmits data to the DCS system host 2 through the intelligent data front-end 33, and then the DCS system host 2 transmits the data to the SIS system server 3. The arrangement of the smoke temperature measuring point, the steam-water temperature measuring point, the pressure measuring device and the flow measuring device of the intelligent data front-end system of the other circulating fluidized bed boiler is the same as that of the intelligent data front-end system of the circulating fluidized bed boiler, and the arrangement is not shown in the figure. The arrangement of the two boiler flue gas temperature measuring points, the steam-water temperature measuring point, the pressure measuring device and the flow measuring device makes up the deficiency of soot blowing monitoring parameters of the circulating fluidized bed boiler, and provides important parameters and basis for intelligent soot blowing optimization calculation.
The inlet and outlet smoke temperature measuring points in the intelligent data front-end system of the two circulating fluidized bed boilers are both thick-wall wear-resistant protective sleeves, and the diameters of the wear-resistant protective sleeves are between phi 20 and phi 36, such as phi 22, phi 26 and phi 32. Because the burning dust particles of the circulating fluidized bed boiler are thick and large in quantity, the smoke temperature measuring points are seriously abraded, the service life of the smoke temperature measuring points can be prolonged by adopting a thick wear-resistant protective sleeve, and the normal smoke temperature data required by the calculation of the intelligent soot blowing system is ensured.
The intelligent soot blowing server 5 reads data from the SIS system server 3 through the data switch 4 in a network communication mode, the intelligent soot blowing server 5, the data switch 4 and the SIS system server 3 are communicated through a communication cable, an intelligent soot blowing software module, a data communication module and a data verification module are deployed on the intelligent soot blowing server 5, and the intelligent soot blowing system is mainly used for verifying and preprocessing collected data, analyzing, calculating and judging intelligent soot blowing, realizing data communication and sending an intelligent soot blowing alarm signal.
An intelligent soot blowing alarm system of an intelligent soot blowing system of a circulating fluidized bed boiler consists of a signal converter 10, a hard wire 11 and an alarm picture in a DCS system host 12, one end of the hard wire 11 is connected with the signal converter 10, the other end of the hard wire is connected and communicated with the DCS system host 12, the intelligent soot blowing alarm system of the other intelligent soot blowing system of the circulating fluidized bed boiler consists of the signal converter 10, the hard wire 6 and the alarm picture in the DCS system host 2, one end of the hard wire 6 is connected with the signal converter 10, the other end of the hard wire is connected and communicated with the DCS system host 2, the intelligent soot blowing alarm systems of the two units share one signal converter 10, and the signal converter 10 is responsible for converting digital signals or analog quantity signals into switching quantity signals; hard-wired lines in the two sets of intelligent soot blowing alarm system drawings respectively draw a representation, and the specific number of the hard-wired lines is determined according to the number of the alarm pictures.
A soot blowing program control system of an intelligent soot blowing system of a circulating fluidized bed boiler consists of program control software in a DCS system main machine 12, a controller 22 and a soot blower group 21, wherein the controller 22, the DCS system main machine 12 and the soot blower group 21 transmit execution signals through control cables, and alarm signal communication logic is arranged between alarm image alarm signals in the DCS system main machine 12 and the program control software installed in the DCS system main machine 12 to ensure the safety of soot blowing operation, so that the link of the intelligent soot blowing and the soot blowing program control system is realized. The soot blowing program system of another intelligent soot blowing system of the circulating fluidized bed boiler has the same structure and principle as the above, and 33 is a controller thereof.
The data switch 4, the intelligent soot blowing server 5 and the signal converter 10 are installed in the cabinet 8, and the SIS system server 3, the DCS system host 12, the DCS system host 2 and the cabinet 8 are arranged in the electronic room.
The intelligent soot blowing monitoring systems 9 and 7 of the two intelligent soot blowing systems of the circulating fluidized bed boiler read signals from the intelligent soot blowing server 5 or the SIS system server 3 respectively through the exchanger 4 in a communication mode, so that the client browsing of the intelligent soot blowing system is realized. Intelligent soot blowing monitoring systems 9 and 7 are installed in a common centralized control room.
Claims (5)
1. An intelligent soot blowing system of a circulating fluidized bed boiler comprises an SIS system server, a DCS system host, a soot blower group, a cabinet, an intelligent soot blowing server, a data exchanger and a signal converter, wherein the intelligent soot blowing server reads data from the SIS system server through the data exchanger in a network communication mode, and an intelligent soot blowing software module, a data communication module and a data verification module are deployed on the intelligent soot blowing server.
2. The intelligent soot blowing system of a circulating fluidized bed boiler of claim 1, wherein: an intelligent data front-end system comprises an intelligent data front end, a smoke inlet temperature measuring point and an outlet temperature measuring point of a low-temperature reheater, a smoke inlet temperature measuring point and an outlet temperature measuring point of a low-temperature superheater, a smoke outlet temperature measuring point of a tertiary economizer, a smoke inlet temperature measuring point and an outlet temperature measuring point of a secondary economizer, a smoke outlet temperature measuring point of a primary economizer, a smoke inlet temperature measuring point and a smoke outlet measuring point of an air preheater, a steam-water outlet temperature measuring point and a steam-water inlet temperature measuring point of a low-temperature reheater and a steam-water inlet pressure measuring device, a steam-water outlet temperature measuring point and an inlet temperature measuring point of a low-temperature superheater, a steam-water outlet temperature measuring point and an inlet temperature measuring point of a tertiary economizer, a steam-water inlet temperature measuring point of a secondary economizer, a steam-water inlet temperature measuring point and a steam, A compensation cable and a signal cable; the flue gas inlet temperature measuring point and the flue gas outlet temperature measuring point are respectively arranged on the side wall of the circulating fluidized bed boiler flue 18, and the steam-water inlet temperature measuring point and the steam-water outlet temperature measuring point, the steam-water inlet pressure measuring device and the flow device are respectively arranged on inlet and outlet pipelines corresponding to the low-temperature superheater, the low-temperature reheater and the primary, secondary and tertiary economizers; the front end of the intelligent data is respectively connected with the smoke inlet temperature measuring point, the smoke outlet temperature measuring point and the steam-water temperature measuring point through compensation cables, and is respectively connected with the pressure measuring device and the flow measuring device through signal cables.
3. The intelligent soot blowing system of a circulating fluidized bed boiler of claim 1, wherein: the method comprises the steps that each boiler is provided with an intelligent data front-end system, the smoke temperature measuring points, steam-water temperature measuring points, pressure measuring devices and flow measuring devices of the intelligent data front-end systems of the two circulating fluidized bed boilers are arranged in the same mode, thick-wall wear-resistant protective sleeves are adopted for the smoke temperature measuring points of the intelligent data front-end systems, and the diameters of the wear-resistant protective sleeves are phi 20-phi 36, such as phi 22, phi 26 and phi 32.
4. The intelligent soot blowing system of a circulating fluidized bed boiler of claim 1, wherein: the intelligent soot blowing alarm system of each boiler is respectively composed of a signal converter, a hard wire and alarm pictures in a DCS system host, one end of the hard wire is connected with the signal converter, the other end of the hard wire is connected with the DCS system host, the soot blowing alarm systems of the two units share one signal converter, the signal converter has the function of converting digital signals or analog quantity signals into switching quantity signals, and the specific number of the hard wires is determined according to the number of the alarm pictures.
5. The intelligent soot blowing system of a circulating fluidized bed boiler of claim 1, wherein: the intelligent soot blowing system of each boiler has its soot blowing program control system comprising program control software installed in the DCS system host, its controller and soot blower group, and alarm signal communication logic set between the alarm image alarm signal in the DCS system host and the program control software installed in the DCS system host to realize the link between the intelligent soot blowing and soot blowing program control systems.
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| CN201920548615.6U CN210014354U (en) | 2019-04-15 | 2019-04-15 | Intelligent soot blowing system of circulating fluidized bed boiler |
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| CN201920548615.6U CN210014354U (en) | 2019-04-15 | 2019-04-15 | Intelligent soot blowing system of circulating fluidized bed boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112815347A (en) * | 2021-02-02 | 2021-05-18 | 山东上奥电力科技有限公司 | Intelligent soot blowing closed-loop control system, method and device for power station boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112815347A (en) * | 2021-02-02 | 2021-05-18 | 山东上奥电力科技有限公司 | Intelligent soot blowing closed-loop control system, method and device for power station boiler |
| US20220243913A1 (en) * | 2021-02-02 | 2022-08-04 | Shandong Shang'ao Power Technology Co., Ltd. | Closed-loop Control System, Method and Device for Intelligent Soot Blowing of Utility Boiler |
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