Coal feeder belt observation purging device and boiler system

Abstract

The invention discloses a coal feeder belt observing and purging device and a boiler system.The coal feeder belt observing and purging device and the boiler system comprise a shell, a conveying assembly and a purging assembly, the shell is provided with a cavity, an inlet, an outlet and an observation window, the observation window, the inlet and the outlet all communicate with the cavity, the observation window is used for observing the state in the cavity, and the conveying assembly is used for conveying the conveying assembly to the purging assembly; the conveying assembly is arranged in the shell and located between the inlet and the outlet so that the conveying assembly can convey coal conveniently, the purging assembly is arranged in the cavity and opposite to the observation window so that the purging assembly can purge the observation window, the purging assembly has a first state and a second state, in the first state, the purging assembly outputs compressed gas at a first flow, and in the second state, the purging assembly outputs compressed gas at a second flow. And in the second state, the purging assembly outputs compressed gas at a second flow rate to purge the observation window, and the first flow rate is smaller than the second flow rate. The coal feeder belt observing and purging device has the advantages of being simple in structure, high in cleaning efficiency and the like.

Description

Technical Field

[0001] This invention relates to the technical field of equipment modification for monitoring and purging devices on coal feeder belts in power plants, specifically to a monitoring and purging device for coal feeder belts and a boiler system. Background Technology

[0002] As a key piece of equipment for coal conveying and combustion control, the coal feeder plays a central role in industries such as thermal power generation, chemical industry, and metallurgy. The coal feeder continuously and evenly distributes raw coal from the coal storage bin to the coal mill or burner according to the boiler's combustion requirements, ensuring dynamic matching between fuel supply and unit load.

[0003] In related technologies, coal dust inside the coal feeder easily adheres to the inner glass of the observation hole and the surface of the subsequently installed camera lens, obstructing the view and making it impossible to accurately judge the coal condition and equipment operating status. Frequent on-site inspections and cleaning are required, which not only increases the labor intensity of the staff, but may also affect the stable operation of the unit due to untimely monitoring. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose a coal feeder belt observation and purging device that is easy to clean and has a simple structure.

[0006] The embodiments of the present invention propose a boiler system with a simple structure.

[0007] According to an embodiment of the present invention, a coal feeder belt observation and purging device includes: a housing having a chamber, an inlet, an outlet, and an observation window, wherein the observation window, the inlet, and the outlet are all in communication with the chamber, so that coal flows into the chamber through the inlet and flows out through the outlet, and the observation window is used to observe the internal state of the chamber; a transport assembly disposed within the housing, located between the inlet and the outlet, so that the transport assembly transports coal; and a purging assembly disposed within the chamber and opposite to the observation window, so that the purging assembly purifies the observation window, the purging assembly having a first state and a second state, wherein in the first state, the purging assembly outputs compressed gas at a first flow rate to prevent the purging assembly from becoming clogged, and in the second state, the purging assembly outputs compressed gas at a second flow rate to purge the observation window, wherein the first flow rate is less than the second flow rate.

[0008] The coal feeder belt observation and purging device of this invention is equipped with a purging component. The purging component can quickly clean the coal dust, dirt and other impurities on the surface of the observation window, making the observation window clear and transparent. This ensures that the operator can clearly observe the internal state of the chamber, thereby enabling the operator to judge the operating status of the coal feeder through the observation window. This eliminates the need for frequent on-site inspections and cleaning, reduces the labor intensity of the staff, and ensures the stable operation of the unit.

[0009] In some embodiments, the inlet is located at the top of the housing, the outlet is located at the bottom of the housing, the feed end of the transport component is located below the inlet, and the discharge end of the transport component is located above the outlet.

[0010] In some embodiments, there are multiple purging components, and at least one purging component is provided on the observation window.

[0011] In some embodiments, there are multiple observation windows, all of which are disposed on the housing.

[0012] In some embodiments, the purging assembly includes: a nozzle disposed within the housing and opposite to the observation window; a purging tube disposed within the housing and connected to the nozzle, the purging tube being adapted to allow gas to pass through it into the nozzle; and a control valve disposed on the purging tube for controlling the flow rate of the gas within the purging tube.

[0013] In some embodiments, the coal feeder belt observation and purging device further includes a monitoring component, which is disposed outside the housing and opposite to the observation window. The monitoring component is used to monitor the observation window so that when the monitoring component detects impurities attached to the observation window, the purging component is in the second state.

[0014] In some embodiments, the monitoring device is a dustproof camera.

[0015] In some embodiments, the coal feeder belt observation and purging device further includes a gas supply component, which is connected to the purging component so that the gas supply component can supply compressed gas to the purging component.

[0016] In some embodiments, the compressed gas is either nitrogen or carbon dioxide.

[0017] A boiler system according to an embodiment of the present invention includes: a storage bin for storing coal; a feeder belt observation and purging device, which is any of the feeder belt observation and purging devices described in the above embodiments, the feeder belt observation and purging device being located below and connected to the storage bin so that coal in the storage bin flows into the feeder belt observation and purging device; a coal mill connected to the feeder belt observation and purging device so that coal in the feeder belt observation and purging device flows into the coal mill in a measured amount, the coal mill being used to grind the coal into pulverized coal; and a boiler connected to the coal mill so that pulverized coal in the coal mill flows into the boiler. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the coal feeder belt observation and purging device according to an embodiment of the present invention.

[0019] 100. Coal feeder belt inspection and purging device;

[0020] 1. Housing; 11. Observation window; 2. Transport assembly; 3. Purge assembly; 31. Nozzle; 32. Purge pipe; 33. Control valve. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] The following description, with reference to the accompanying drawings, describes a coal feeder belt observation and purging device 100 according to an embodiment of the present invention.

[0023] like Figure 1 As shown, the coal feeder belt observation and purging device 100 according to an embodiment of the present invention includes a housing 1, a transport component 2, and a purging component 3.

[0024] The shell 1 has a chamber, an inlet, an outlet, and an observation window 11. The observation window 11, the inlet, and the outlet are all connected to the chamber, so that coal flows into the chamber through the inlet and flows out through the outlet. The observation window 11 is used to observe the internal state of the chamber. Specifically, as shown... Figure 1 As shown, the housing 1 is the external support structure of the coal feeder, which can withstand various external impacts and wear generated during coal transportation, and provide reliable protection for the internal components of the housing 1.

[0025] The housing 1 is equipped with an inlet, an outlet, and an observation window 11, all of which are connected to the chamber. Coal flows into the chamber through the inlet and out through the outlet. The observation window 11 is made of a high-strength, transparent, and wear-resistant special glass material and is located on the housing 1. The observation window 11 can withstand the high temperature and pressure that may occur inside the chamber and can clearly display the transportation status of coal, the operating status of the transportation component 2, and whether any abnormalities have occurred. Through the observation window 11, the operator can monitor the working status of the coal feeder in real time, promptly identify potential problems, and take corresponding measures, thereby improving the operational safety and reliability of the coal feeder.

[0026] The transport assembly 2 is housed within the casing 1, located between the inlet and outlet, to facilitate the transport of coal. Specifically, as shown... Figure 1 As shown, transport component 2 is a belt conveyor, which is connected to the inlet and outlet to transport coal.

[0027] The purging assembly 3 is disposed within the chamber and opposite to the observation window 11, so that the purging assembly 3 can purge the observation window 11. The purging assembly 3 has a first state and a second state. In the first state, the purging assembly 3 outputs compressed gas at a first flow rate to prevent blockage. In the second state, the purging assembly 3 outputs compressed gas at a second flow rate to purge the observation window 11, where the first flow rate is less than the second flow rate. Specifically, as shown... Figure 1 As shown, the purging assembly 3 is installed inside the chamber and the outlet of the purging assembly 3 is directly opposite the observation window 11. The purging assembly 3 purifies the observation window 11 to ensure that the observation window 11 is clear and transparent so that the operator can clearly observe the internal state of the chamber.

[0028] The purging assembly 3 has two states: a first state and a second state. In the first state, the purging assembly 3 outputs compressed gas at a first flow rate. This first flow rate is relatively small, thus allowing for regular ventilation and maintenance of the pipes and nozzles 31 inside the purging assembly 3, preventing coal dust or other impurities from accumulating and clogging inside the purging assembly 3. By continuously outputting compressed gas at a small flow rate, the internal flow of the purging assembly 3 can be kept unobstructed without affecting the normal operation of the coal feeder, ensuring that it can function normally when needed.

[0029] When cleaning of the observation window 11 is required, the purging assembly 3 switches to the second state. In the second state, the purging assembly 3 outputs compressed gas at a second flow rate, which is greater than the first flow rate. The powerful airflow can quickly blow away coal dust, dirt, and other impurities adhering to the surface of the observation window 11, restoring the observation window 11 to its clear and transparent state.

[0030] The coal feeder belt observation and purging device 100 of this embodiment includes a purging component 3, which has a first state and a second state. In the first state, compressed gas is output at a relatively small first flow rate to perform regular ventilation and maintenance on the internal pipes and nozzles 31, preventing coal dust or impurities from accumulating and clogging the pipes, and ensuring that the internal flow remains unobstructed without affecting the normal operation of the coal feeder. In the second state, compressed gas is output at a relatively large second flow rate to quickly purge coal dust, dirt, and other impurities from the surface of the observation window 11, restoring the observation window 11 to a clear and transparent state. This allows operators to clearly observe the internal state of the chamber, enabling them to accurately judge the operating status of the coal feeder through the observation window 11. This eliminates the need for frequent on-site inspections and cleaning, reduces the labor intensity of the staff, and ensures the stable operation of the unit.

[0031] In some embodiments, the inlet is located at the top of the housing 1, the outlet is located at the bottom of the housing 1, the feed end of the transport component 2 is located below the inlet, and the discharge end of the transport component 2 is located above the outlet. Specifically, as shown... Figure 1 As shown, the inlet is located at the top of the left end of the shell 1, and the outlet is located at the bottom of the right end of the shell 1. The left end of the transport assembly 2 is located below the inlet, and the right end of the transport assembly 2 is located above the outlet. Coal flows into the transport assembly 2 through the inlet and then into the outlet through the transport assembly 2.

[0032] In some embodiments, there are multiple blowing components 3, and at least one blowing component 3 is provided on the observation window 11. Thus, by blowing the same observation window 11 with multiple blowing components, the blowing efficiency of the blowing components 3 is improved.

[0033] In some embodiments, there are multiple viewing windows 11, all of which are disposed on the housing 1. Specifically, as shown in the figure... Figure 1 As shown, there can be four observation windows 11. Two observation windows 11 are set on the left end face of the shell 1 to observe the coal feeding status, and the other two observation windows 11 are set on the right end face of the shell 1 to observe the coal discharge status, making the setting of the observation windows 11 more reasonable.

[0034] In some embodiments, the purging assembly 3 includes a nozzle 31, a purging pipe 32, and a control valve 33.

[0035] The nozzle 31 is disposed inside the housing 1 and is positioned opposite to the observation window 11. The purge pipe 32 is disposed inside the housing 1 and connected to the nozzle 31. The purge pipe 32 is adapted to allow gas to pass through it, so that the gas passes through the purge pipe 32 into the nozzle 31. Specifically, as shown... Figure 1As shown, both the nozzle 31 and the purge pipe 32 are located inside the housing 1. The outlet of the nozzle 31 faces the observation window 11. The outlet of the purge pipe 32 is connected to the inlet of the nozzle 31, and compressed gas can be introduced into the inlet of the purge pipe 32. This allows the compressed gas to act directly on the surface of the observation window 11 through the purge pipe 32 and the nozzle 31, effectively removing dust, dirt and other impurities attached to the observation window 11, ensuring that the observation window 11 always remains clear and transparent.

[0036] In some embodiments, a control valve 33 is disposed on the purge pipe 32, and the control valve 33 is used to control the flow rate of gas within the purge pipe 32. Specifically, as shown in the figure... Figure 1 As shown, the control valve 33 is installed on the purge pipe 32. The control valve 33 can adjust the gas flow rate in the purge pipe 32 according to actual needs. In the first state, the control valve 33 adjusts the gas flow rate to a smaller value. In the second state, the control valve 33 adjusts the gas flow rate to a larger value to enhance the purging effect and ensure that the observation window 11 can be thoroughly cleaned.

[0037] In some embodiments, the feeder belt observation and purging device 100 further includes a monitoring component (not shown in the figure). The monitoring component is disposed outside the housing 1 and opposite to the observation window 11. The monitoring component is used to monitor the observation window 11 so that when the monitoring component detects impurities attached to the observation window 11, the purging component is in a second state. Thus, by monitoring the state of the observation window 11 through the monitoring component, when the monitoring component detects impurities attached to the observation window 11, the purging component is in the second state, so that the purging component can blow and clean the observation window 11.

[0038] In some embodiments, the monitoring device is a dustproof camera. Since the coal feeder generates a large amount of dust and forms complex airflow during operation, the dustproof camera can effectively block dust, resist airflow impact, ensure stable operation, and clearly capture the condition of impurities in the observation window 11, realizing real-time continuous monitoring and meeting the needs of precise monitoring.

[0039] In some embodiments, the coal feeder belt observation and purging device 100 further includes a gas supply component (not shown in the figure), which is connected to the purging component 3 so that the gas supply component can supply compressed gas to the purging component 3. Specifically, as Figure 1 As shown, the gas supply component can be a compressor, and the outlet of the compressor is connected to the inlet of the purge pipe 32, thereby providing compressed gas to the purge pipe 32 through the compressor.

[0040] In some embodiments, the compressed gas is either nitrogen or carbon dioxide. Nitrogen or carbon dioxide is chosen as the compressed gas because nitrogen is chemically stable and has strong inert protection, effectively isolating oxygen to prevent spontaneous combustion and explosion of pulverized coal; carbon dioxide has flame-suppressing properties and a high density, ensuring equipment safety, adapting to processes, and balancing environmental protection and economic considerations.

[0041] The boiler system of this invention includes a storage bin, a coal feeder belt observation and purging device 100, a coal mill, and a boiler.

[0042] The storage bin is used to store coal. The feeder belt observation and purging device 100 is any one of the feeder belt observation and purging devices 100 in the above embodiments. The feeder belt observation and purging device 100 is located below and connected to the storage bin so that coal in the storage bin flows into the feeder belt observation and purging device 100. Specifically, as shown in the figure... Figure 1 As shown, the storage bin is located at the top of the coal feeder and is connected to the inlet of the coal feeder, so that the coal in the storage bin flows into the coal feeder and is transported by the operation of the coal feeder.

[0043] The coal mill is connected to the feeder belt monitoring and purging device 100 so that coal in the feeder belt monitoring and purging device 100 flows quantitatively into the coal mill. The coal mill is used to grind the coal into pulverized coal. The boiler is connected to the coal mill so that the pulverized coal in the coal mill flows into the boiler. Specifically, such as... Figure 1 As shown, the outlet of the coal feeder is connected to the coal mill, allowing the coal in the coal feeder to flow into the coal mill in a measured amount. The coal is then ground into pulverized coal by the coal mill. The boiler is connected to the coal mill, allowing the coal to flow into the boiler and burn in the boiler.

[0044] The boiler system of this invention has the advantages of simple structure and low cost.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coal feeder belt observation and purging device, characterized in that, include: The shell has a chamber, an inlet, an outlet, and an observation window. The observation window, the inlet, and the outlet are all in communication with the chamber so that coal flows into the chamber through the inlet and flows out through the outlet. The observation window is used to observe the internal state of the chamber. A transport assembly disposed within the housing and located between the inlet and the outlet, for transporting coal; A purging assembly is disposed within the chamber and opposite to the observation window, so that the purging assembly purges the observation window. The purging assembly has a first state and a second state. In the first state, the purging assembly outputs compressed gas at a first flow rate to prevent the purging assembly from becoming clogged. In the second state, the purging assembly outputs compressed gas at a second flow rate to purge the observation window. The first flow rate is less than the second flow rate.

2. The belt observation purging device of the coal feeder according to claim 1, characterized by, The inlet is located at the top of the housing, the outlet is located at the bottom of the housing, the feed end of the transport component is located below the inlet, and the discharge end of the transport component is located above the outlet.

3. The belt observation purging device of the coal feeder according to claim 1, characterized by, There are multiple purging components, and at least one of the purging components is provided on the observation window.

4. The belt observation purging device of the coal feeder according to claim 1, characterized by, There are multiple observation windows, and all of the observation windows are located on the housing.

5. The belt observation purging device of the coal feeder according to claim 1, wherein, The purging assembly includes: A nozzle, wherein the nozzle is disposed within the housing and is positioned opposite the observation window; A purge pipe, which is disposed within the housing and connected to the nozzle, is adapted to allow gas to pass through the purge pipe into the nozzle. A control valve is provided on the purge pipe, and the control valve is used to control the flow rate of gas in the purge pipe.

6. The belt observation purging device of the coal feeder according to claim 1, wherein It also includes a monitoring component, which is disposed outside the housing and opposite to the observation window. The monitoring component is used to monitor the observation window so that when the monitoring component detects impurities attached to the observation window, the purging component is in the second state.

7. The belt observation purging device of the coal feeder according to claim 6, characterized by, The monitoring device is a dustproof camera.

8. The belt observation purging device of the coal feeder according to claim 1, wherein, It also includes a gas supply component, which is connected to the purging component so that the gas supply component can supply compressed gas to the purging component.

9. The coal feeder belt observation and purging device according to claim 1, characterized in that, The compressed gas is either nitrogen or carbon dioxide.

10. A boiler system characterized by, include: Storage bins, the storage bins being used to store coal; A coal feeder belt observation and purging device, wherein the coal feeder belt observation and purging device is the coal feeder belt observation and purging device described in any one of claims 1-9 above, wherein the coal feeder belt observation and purging device is located below the storage bin and connected to the storage bin, so that the coal in the storage bin flows into the coal feeder belt observation and purging device. A coal mill is connected to the feeder belt observation and purging device so that coal in the feeder belt observation and purging device flows into the coal mill in a measured amount. The coal mill is used to grind the coal into coal powder. A boiler, which is connected to the coal mill so that pulverized coal from the coal mill flows into the boiler.

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