CN214332673U - Boiler superheater control system - Google Patents
Boiler superheater control system Download PDFInfo
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- CN214332673U CN214332673U CN202022647861.2U CN202022647861U CN214332673U CN 214332673 U CN214332673 U CN 214332673U CN 202022647861 U CN202022647861 U CN 202022647861U CN 214332673 U CN214332673 U CN 214332673U
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- superheater
- detector
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- regulating valve
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Abstract
The embodiment of the application discloses boiler superheater control system. The application includes: the device comprises a burner, a detector, a pressure regulating valve, a soot blowing steam device, a superheater, an upper boiler barrel, a lower boiler barrel and a vent pipe; the air pipe is respectively connected with the burner, the detector, the pressure regulating valve, the soot blowing steam device, the superheater and the upper and lower drums; the detector is electrically connected with the pressure regulating valve and the soot blowing steam device respectively; the superheater is respectively and electrically connected with the detector, the pressure regulating valve and the soot blowing steam device; the detector is used for detecting the gas content at the inlet of the superheater and sending a detection signal to the control system, the control system controls the connection and disconnection of the pressure regulating valve according to the detection signal, and controls the operation of the soot blowing steam device to reduce the temperature of the gas in the superheater according to the connection and disconnection of the pressure regulating valve so as to protect the superheater.
Description
Technical Field
The embodiment of the application relates to the field of machine manufacturing, in particular to a boiler superheater control system.
Background
The boiler is an important production process of a thermodynamic system and is also important equipment for utilizing the residual energy of steel enterprises, but due to the requirements of different environmental protection time periods, the operation time periods of gas generation equipment such as a blast furnace, a converter, a coke oven and the like fluctuate to cause the change of the gas generation amount, and when the gas generation amount is less, some boilers need to be shut down or run at low load.
In the prior art, the biomass boiler superheater is described in the aspect of biomass boiler superheater, the biomass is characterized by containing alkali metal, in the process of actual biomass combustion of the boiler, the grass biomass raw material can also generate a large amount of chemical substances with high volatility, and under the action of homogeneous reaction, because the temperature of the high-temperature superheater is relatively high at the moment, the generated chemical substances are gradually condensed on the pipe wall of the high-temperature superheater, so that the corrosion problem of the high-temperature superheater is caused, and under the action of continuous corrosion, the pipe wall of the high-temperature superheater can be gradually thinned, and the superheater is seriously damaged.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a boiler superheater control system, which is used for reducing the condition of damaging a superheater.
A first aspect of an embodiment of the present application provides a boiler superheater control system, including: the device comprises a burner, a detector, a pressure regulating valve, a soot blowing steam device, a superheater, an upper boiler barrel, a lower boiler barrel and a vent pipe;
the air pipe is respectively connected with the burner, the detector, the pressure regulating valve, the soot blowing steam device, the superheater and the upper and lower drums;
the detector is electrically connected with the pressure regulating valve and the soot blowing steam device respectively;
the superheater is respectively and electrically connected with the detector, the pressure regulating valve and the soot blowing steam device;
the detector is used for detecting the gas content at the inlet of the superheater and sending a detection signal to the control system, the control system controls the connection and disconnection of the pressure regulating valve according to the detection signal, and the operation of the soot blowing steam device is controlled according to the connection and disconnection of the pressure regulating valve.
Optionally, the detector is a temperature detector or an alkali metal gas detector.
Optionally, when the detector is a temperature detector, the temperature detector is configured to detect a temperature at an inlet of the superheater and send a detected temperature signal to the control system; and when the detector is an alkali metal gas detector, the alkali metal detector is used for detecting the content of the alkali metal gas at the inlet of the superheater and sending the detection signal to the control system.
Optionally, the detector is arranged at an inlet of the superheater, and the detector is not attached to the superheater.
Optionally, one side of the detector is provided with the pressure regulating valve and the soot blowing steam generator, the pressure regulating valve is used for regulating the gas pressure passing through the superheater, and the soot blowing steam generator is used for reducing the gas temperature in the superheater.
Optionally, the superheater is disposed inside the ventilation duct, and the superheater is used for treating the gas treated by the soot blowing steam generator.
Optionally, an alarm is arranged at the bottom of the superheater, and the alarm is used for executing alarm operation when the temperature of the superheater reaches a preset temperature.
Optionally, when the detection signal sent by the detector meets a preset condition, the pressure regulating valve regulates the gas pressure passing through the vent pipe.
Optionally, when the detection signal sent by the detector meets a preset condition, the soot blowing steam generator performs a cyclic soot blowing operation.
Optionally, the detector and the soot blowing steam device are made of strong corrosion-resistant materials.
According to the technical scheme, the embodiment of the application has the following advantages: through setting up control system in this application, wherein include the nozzle, the detector, the air-vent valve, blow the ash steamer, the over heater, upper and lower drum and breather pipe, the breather pipe respectively with the nozzle, the detector, the air-vent valve, blow the ash steamer, the over heater is connected with upper and lower drum, the detector respectively with the air-vent valve with blow ash steamer electric connection, the over heater respectively with the detector, the air-vent valve and blow ash steamer electric connection, the detector is used for detecting over heater entrance gas content, with detected signal transmission to control system, control system controls switching on and breaking off of air-vent valve according to detected signal, the operation of blowing the ash steamer with the disconnection control according to the air-vent valve, blow the temperature that reduces the over heater that blows to the over heater that circulates, the condition of damaging the over heater has been reduced like this.
Drawings
FIG. 1 is a schematic diagram of a boiler superheater control system in an embodiment of the present application.
Detailed Description
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit the specific installation orientations of the respective members or components.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings and described in the present application, are intended to be considered illustrative and not restrictive, and therefore, not limiting, since those skilled in the art will understand and read the present application, it is understood that any modifications of the structures, changes in the proportions, or adjustments in the sizes, which are not necessarily essential to the practice of the present application, are intended to be within the scope of the present disclosure without affecting the efficacy and attainment of the same.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to FIG. 1, a first aspect of the present application provides an embodiment of a boiler superheater control system, comprising: burner 1, detector 2, the air-vent valve 3, blow grey steamer 4, the over heater 5, upper and lower drum 6 and breather pipe 7, wherein breather pipe 7 respectively with burner 1, detector 2, the air-vent valve 3, blow grey steamer 4, over heater 5 and upper and lower drum 6 are connected, detector 2 respectively with air-vent valve 3 with blow grey steamer 4 electric connection, over heater 5 respectively with detector 2, air-vent valve 3 and blow grey steamer 4 electric connection, detector 2 is used for detecting 5 entrance gas content of over heater, with detected signal transmission to control system, control system controls switching on and breaking off of air-vent valve 3 according to detected signal, according to switching on and the operation of disconnection control soot steam blower 4 of air-vent valve 3.
In practical application, the temperature of the superheater is an important factor influencing the corrosion speed, so that the corrosion speed can be controlled within a controllable range to avoid the problem of corrosion of the high-temperature superheater of the biomass boiler to the maximum extent, and the temperature control work of the high-temperature superheater is very necessary. In the initial stage of unit operation, the stability of charge-in system in the course of the work still has a lot of not enough, consequently, the composite control degree of difficulty is whole great, the emergence probability of putty problem is higher, in addition in the in-process of stirring biomass fuel, because biomass fuel of different grade type has inhomogeneous problem in joining the process, seriously influence entering boiler fuel calorific value and get stability, and then lead to the problem that the superheater appears the high temperature, research shows, the inside highest temperature of superheater can exceed 600 degrees centigrade, this is also the leading factor that leads to superheater corrosion problem to take place.
In the embodiment, a control system is added, wherein the control system comprises a detector 2, a pressure regulating valve 3 and a soot blowing steam device 4, the detector 2 detects the temperature at the inlet of the superheater 5 and the content of the alkali metal gas, and when the temperature and the content of the alkali metal reach certain values, the pressure regulating valve 3 and the soot blowing steam device 4 are controlled to reduce the temperature of the gas passing through the superheater 5, so that the effect of protecting the superheater 5 is achieved.
Optionally, the detector 2 may be a temperature detector or an alkali metal gas content detector, when the detector is a 2-position temperature detector, the detection signal is a temperature signal, the temperature can be raised due to the combustion of the gas in the vent pipe, so that the temperature of the superheater inlet detected by the temperature detector is increased, and the detected temperature signal is sent to the control system, the control system controls the operation of the pressure regulating valve 3 according to the judgment module and the control module, the pressure regulating valve 3 is used for regulating the passing gas pressure so as to reduce the gas combustion environment, and the soot blowing steam device 4 is controlled to circularly blow steam to the superheater 5, so that the steam is evaporated to reduce the gas temperature inside the superheater 5.
When the detector 2 is an alkali metal gas content detector, the detector is used for detecting whether the content of alkali metal in the gas in the vent pipe 7 passing through the superheater 5 reaches a certain preset value or not, and sending a detection signal to the control system, and similarly, the control system controls the operation of the pressure regulating valve 3 and the soot blowing steam device 4 according to the self judgment module and the control module.
Optionally, the detector 2 is arranged at an inlet of the superheater 5, and is not attached to the superheater 5, one side of the detector 2 is provided with a pressure regulating valve 3 and a soot blowing steam generator 4, the pressure regulating valve 3 is used for regulating gas pressure passing through the superheater 5, the soot blowing steam generator 4 is used for reducing gas temperature in the superheater 5, the superheater 5 is arranged inside a vent pipe 7, the superheater 5 is used for processing gas processed by the soot blowing steam generator 4, high temperature is generated during gas combustion, gas processed by the superheater 5 can also generate high temperature, and the detector 2 and the soot blowing steam generator 4 are made of strong corrosion-resistant materials.
It is specific, effectively avoid the too fast problem of boiler high temperature superheater corruption to take place, reduce the incidence of keeping the problem, it is too high to blow grey steam source pressure at grey soot blower 4, under the great condition of water content, superheater 5 also can correspondingly receive the influence in the course of the work, because adjust gas pressure through air-vent valve 3, generally set up to 1MPa, at this moment, steam temperature can reach the saturation, but under this condition, the degree of difficulty that hydrophobic discharges is higher, and then lead to the water content to increase in the steam, consequently, use the detector to detect 5 temperatures of superheater, thereby can control 5 inside gases of superheater, reach the effect of protection superheater 5.
It is intended that the foregoing description of the disclosed embodiments enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A boiler superheater control system, comprising:
the device comprises a burner, a detector, a pressure regulating valve, a soot blowing steam device, a superheater, an upper boiler barrel, a lower boiler barrel and a vent pipe;
the air pipe is respectively connected with the burner, the detector, the pressure regulating valve, the soot blowing steam device, the superheater and the upper and lower drums;
the detector is electrically connected with the pressure regulating valve and the soot blowing steam device respectively;
the superheater is respectively and electrically connected with the detector, the pressure regulating valve and the soot blowing steam device;
the detector is used for detecting the gas content at the inlet of the superheater and sending a detection signal to the control system, the control system controls the connection and disconnection of the pressure regulating valve according to the detection signal, and the operation of the soot blowing steam device is controlled according to the connection and disconnection of the pressure regulating valve.
2. The boiler superheater control system of claim 1, wherein the detector is a temperature detector or an alkali metal gas detector.
3. The boiler superheater control system of claim 2, wherein when the detector is the temperature detector, the temperature detector is configured to detect a temperature at the superheater inlet and send the detected temperature signal to the control system; and when the detector is the alkali metal gas detector, the alkali metal detector is used for detecting the content of the alkali metal gas at the inlet of the superheater and sending the detection signal to the control system.
4. The boiler superheater control system of claim 1, wherein the detector is disposed at the superheater inlet and the detector is non-compliant with the superheater.
5. The boiler superheater control system according to claim 4, wherein the detector side is provided with the pressure regulating valve for regulating a gas pressure through the superheater and the sootblowing steam for reducing a gas temperature within the superheater.
6. The boiler superheater control system according to claim 1, wherein the superheater is disposed inside the draft tube, the superheater being configured to process gas after being processed by the sootblower.
7. The boiler superheater control system according to claim 6, wherein an alarm is provided at the superheater bottom for performing an alarm operation when the superheater temperature reaches a preset temperature.
8. The boiler superheater control system according to any one of claims 1 to 7, wherein said pressure regulating valve regulates gas pressure through said vent line when a detection signal sent by said detector satisfies a preset condition.
9. The boiler superheater control system according to any one of claims 1 to 7, wherein the sootblowing steam generator performs a cyclic sootblowing operation when a detection signal sent by the detector satisfies a preset condition.
10. The boiler superheater control system according to any one of claims 1 to 7, wherein the detector and the sootblowing steam generator are made of a highly corrosion resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022647861.2U CN214332673U (en) | 2020-11-16 | 2020-11-16 | Boiler superheater control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022647861.2U CN214332673U (en) | 2020-11-16 | 2020-11-16 | Boiler superheater control system |
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| Publication Number | Publication Date |
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| CN214332673U true CN214332673U (en) | 2021-10-01 |
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| CN202022647861.2U Active CN214332673U (en) | 2020-11-16 | 2020-11-16 | Boiler superheater control system |
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| CN (1) | CN214332673U (en) |
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