Spontaneous combustion prevention device, raw coal bunker and coal pulverizing system

Abstract

The utility model relates to a spontaneous combustion prevention device, a raw coal bunker and a coal pulverizing system. The technical problem that spontaneous combustion is likely to happen due to the fact that the temperature in the raw coal bunker is too high is solved. The spontaneous combustion prevention device comprises a water inlet pipeline in fluid communication with an external cooling water source in an on-off mode and a plurality of annular cooling pipelines surrounding the outer side wall of the raw coal bunker, and the annular cooling pipelines are arranged at intervals in the vertical direction and are in fluid communication with the water inlet pipeline in an on-off mode. A plurality of spray nozzles are arranged on the side, facing the outer side wall of the raw coal bunker, of the annular cooling pipeline, the temperature monitoring mechanism is arranged on the inner side wall of the raw coal bunker and used for monitoring the temperature in the raw coal bunker, the temperature monitoring mechanism is in communication connection with the control module, and the control module is configured to control the spray nozzles according to the temperature measured by the temperature monitoring mechanism. And connection and disconnection between each annular cooling pipeline and the water inlet pipeline are controlled.

Description

Technical Field

[0001] The present disclosure relates to the technical field of thermal power generation, and in particular to an anti-spontaneous combustion device, a raw coal bin and a pulverizing system. Background Art

[0002] Raw coal bunker is the main coal storage equipment in coal enterprises and thermal power plants. The temperature parameter of the coal body inside it is an important indicator to measure its safety.

[0003] In raw coal bunkers, coal reacts with oxygen under suitable ventilation conditions to generate heat. When the heat released exceeds the heat dissipated, causing the coal temperature to rise to the ignition point, spontaneous combustion is very likely to occur. Therefore, temperature control in raw coal bunkers is particularly important. Utility Model Content

[0004] The purpose of the present invention is to provide a device for preventing spontaneous combustion, a raw coal bin and a pulverizing system, so as to solve the technical problem that the temperature in the raw coal bin is too high and spontaneous combustion is likely to occur.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides an anti-spontaneous combustion device, including: a water inlet pipeline, which is fluidically connected to an external cooling water source in an on-off manner; a plurality of annular cooling pipelines, which surround the outer wall of the raw coal bin; the plurality of annular cooling pipelines are arranged at intervals in the vertical direction, and are respectively fluidically connected to the water inlet pipeline in an on-off manner; a plurality of spray nozzles are provided on the side of the annular cooling pipeline facing the outer wall of the raw coal bin; a temperature monitoring mechanism, which is provided on the inner wall of the raw coal bin and is used to monitor the temperature in the raw coal bin; and a control module, the temperature monitoring mechanism is communicatively connected to the control module, and the control module is configured to control the on-off connection between each of the annular cooling pipelines and the water inlet pipeline according to the temperature measured by the temperature monitoring mechanism.

[0006] Optionally, a first solenoid valve is provided on the water inlet pipeline, and the first solenoid valve is communicatively connected to the control module.

[0007] Optionally, a second solenoid valve is provided between the annular cooling pipeline and the water inlet pipeline, and the second solenoid valve is communicatively connected to the control module. The control module is configured to control the opening and closing of the second solenoid valve according to the temperature measured by the temperature monitoring mechanism.

[0008] Optionally, the temperature monitoring mechanism includes a temperature sensing line arranged on the inner wall of the raw coal bin, and the temperature sensing line is communicatively connected to the control module.

[0009] Optionally, a plurality of temperature sensing lines are provided on the inner wall of the raw coal bin, and the positions of the plurality of temperature sensing lines correspond one-to-one to the positions of the plurality of annular cooling pipelines. The plurality of temperature sensing lines are respectively communicated with the control module, and the control module is configured as follows: when the temperature measured by the temperature sensing line reaches or exceeds the preset temperature, the annular cooling pipeline corresponding to the temperature sensing line is connected to the water inlet pipeline; when the temperature measured by the temperature sensing line is lower than the preset temperature, the annular cooling pipeline corresponding to the temperature sensing line is disconnected from the water inlet pipeline.

[0010] Optionally, the temperature monitoring mechanism includes a plurality of temperature measuring points arranged on the inner wall of the raw coal bin, the positions of the plurality of temperature measuring points correspond one-to-one to the positions of the plurality of annular cooling pipelines, and the plurality of temperature measuring points are respectively communicated with the control module, and the control module is configured as follows: when the temperature measured by the temperature measuring point reaches or exceeds a preset temperature, the annular cooling pipeline corresponding to the temperature measuring point is connected to the water inlet pipeline; when the temperature measured by the temperature measuring point is lower than the preset temperature, the annular cooling pipeline corresponding to the temperature measuring point is disconnected from the water inlet pipeline.

[0011] Optionally, the anti-spontaneous combustion device further includes a water receiving tray arranged below the raw coal bin.

[0012] Optionally, the external cooling water source is a fire water source.

[0013] On the basis of the above technical solution, the present disclosure further provides a raw coal bunker, including the anti-spontaneous combustion device in the above technical solution.

[0014] On the basis of the above technical solution, the present disclosure also provides a pulverizing system, including the raw coal bin in the above technical solution.

[0015] Through the above technical solution, the anti-spontaneous combustion device provided by the present disclosure can monitor the temperature in the raw coal bin through the temperature monitoring mechanism. When the temperature in the raw coal bin rises, the control module can control the annular cooling pipeline and the water inlet pipeline to be connected, so that the cooling water provided by the external cooling water source can enter the annular cooling pipeline through the water inlet pipeline, and then be sprayed to the outer wall of the raw coal bin through the spray nozzle, thereby cooling the side wall of the raw coal bin, indirectly reducing the heat accumulated in the raw coal inside the raw coal bin, avoiding reaching the ignition point of the coal, and thus preventing the occurrence of fire in the raw coal bin. In addition, the anti-spontaneous combustion device provided by the present disclosure has a simple structure, low cost, and is easy to implement. The raw coal bin provided by the present disclosure has the same technical effect as the anti-spontaneous combustion device in the above technical solution. In order to avoid unnecessary repetition, it will not be repeated here. The pulverizing system provided by the present disclosure has the same technical effect as the raw coal bin in the above technical solution. In order to avoid unnecessary repetition, it will not be repeated here.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the application of the anti-spontaneous combustion device to the raw coal bin in a specific embodiment of the present disclosure.

[0019] Description of Reference Numerals

[0020] 100-Raw coal bunker,

[0021] 1-water inlet pipe, 11-first solenoid valve,

[0022] 2-annular cooling pipeline, 21-second solenoid valve,

[0023] 3-temperature monitoring mechanism, 31-temperature sensing line,

[0024] 4-Water tray. DETAILED DESCRIPTION

[0025] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0026] In this disclosure, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the upper and lower positions of the raw coal bin in normal use. Figure 1 In the drawing orientation, "inner" and "outer" refer to the inner and outer sides relative to the outline of the corresponding component itself. The terms "first," "second," and so on, used in this disclosure, are intended to distinguish one element from another and do not convey sequential order or importance. Furthermore, in the following description referring to the accompanying drawings, unless otherwise indicated, identical numbers in different drawings represent identical or similar elements.

[0027] According to a specific embodiment of the present disclosure, a device for preventing spontaneous combustion is provided, referring to Figure 1As shown, the anti-spontaneous combustion device may include a water inlet pipeline 1, a plurality of annular cooling pipelines 2, a temperature monitoring mechanism 3 and a control module, wherein the water inlet pipeline 1 can be fluidically connected to an external cooling water source (not shown), the plurality of annular cooling pipelines 2 can surround the outer wall of the raw coal bin 100, and can be fluidically connected to the water inlet pipeline 1 respectively, the plurality of annular cooling pipelines 2 can be arranged at intervals in the vertical direction to cool different positions on the outer wall of the raw coal bin 100, and the annular cooling pipelines 2 facing the outer wall of the raw coal bin 100 A plurality of spray nozzles (not shown) are provided on one side, that is, the plurality of spray nozzles can be provided on the inner circumferential surface of the annular cooling pipeline 2 and can be arranged at equal intervals along the circumferential direction to spray cooling water evenly to the outer wall of the raw coal bin 100. The temperature monitoring mechanism 3 can be provided on the inner wall of the raw coal bin 100 to monitor the temperature in the raw coal bin 100. The temperature monitoring mechanism 3 can be communicatively connected with the control module. The control module can be configured to control the on-off between each annular cooling pipeline 2 and the water inlet pipeline 1 according to the temperature measured by the temperature monitoring mechanism 3.

[0028] Through the above technical solution, the anti-spontaneous combustion device provided by the present disclosure can monitor the temperature in the raw coal bin 100 through the temperature monitoring mechanism 3. When the temperature in the raw coal bin 100 rises, the control module can control the annular cooling pipeline 2 to be connected with the water inlet pipeline 1, so that the cooling water provided by the external cooling water source can enter the annular cooling pipeline 2 through the water inlet pipeline 1, and then be sprayed to the outer wall of the raw coal bin 100 through the spray nozzle, thereby cooling the side wall of the raw coal bin 100, indirectly reducing the heat accumulated in the raw coal inside the raw coal bin 100, avoiding reaching the ignition point of the coal, and thus preventing the occurrence of fire in the raw coal bin. In addition, the anti-spontaneous combustion device provided by the present disclosure has a simple structure, low cost, and is easy to implement.

[0029] In a specific embodiment of the present disclosure, the external cooling water source may be a fire water source, which can directly utilize the existing fire water system and further reduce the cost of the anti-spontaneous combustion device.

[0030] In order to realize the connection and disconnection between the water inlet pipe 1 and the external cooling water source, refer to Figure 1 As shown, a first solenoid valve 11 may be provided on the water inlet pipe 1 , and the first solenoid valve 11 may be communicatively connected with the control module.

[0031] Among them, as an option, the control module can control the first solenoid valve 11 to remain in a normally open state, and only control the first solenoid valve 11 to be closed when the anti-spontaneous combustion device needs to be repaired to cut off the connection between the water inlet pipe 1 and the external cooling water source.

[0032] As another option, the control module can control the first solenoid valve 11 to remain in a normally closed state, and only control the first solenoid valve 11 to open when the raw coal bin 100 needs to be cooled, so that the annular cooling pipeline 2 can draw water from an external cooling water source through the water inlet pipeline 1.

[0033] In order to realize the connection and disconnection between the annular cooling pipe 2 and the water inlet pipe 1, refer to Figure 1 As shown, a second solenoid valve 21 may be provided between the annular cooling pipeline 2 and the water inlet pipeline 1. The second solenoid valve 21 may be communicatively connected to a control module. The control module may be configured to control the opening and closing of the second solenoid valve 21 based on the temperature measured by the temperature monitoring mechanism 3. That is, when the control module determines that the temperature measured by the temperature monitoring mechanism 3 is too high, the control module may control the second solenoid valve 21 to open, thereby connecting the annular cooling pipeline 2 to the water inlet pipeline 1.

[0034] refer to Figure 1 As shown, as an embodiment of the temperature monitoring mechanism 3, the temperature monitoring mechanism 3 may include a temperature sensing line 31 arranged on the inner wall of the raw coal bin 100, and the temperature sensing line 31 may be communicatively connected with the control module to output the measured temperature information to the control module.

[0035] Since a plurality of annular cooling pipes 2 are provided at different positions of the raw coal bin 100 to cool different positions of the raw coal bin 100, accordingly, Figure 1 As shown, the inner wall of the raw coal bin 100 can be provided with multiple temperature sensing lines 31, the positions of the multiple temperature sensing lines 31 can correspond one-to-one to the positions of the multiple annular cooling pipelines 2, and the multiple temperature sensing lines 31 can be respectively communicated with the control module, and the control module can be configured as follows: when the temperature measured by the temperature sensing line 31 reaches or exceeds the preset temperature, the annular cooling pipeline 2 corresponding to the temperature sensing line 31 is connected to the water inlet pipeline 1; when the temperature measured by the temperature sensing line 31 is lower than the preset temperature, the annular cooling pipeline 2 corresponding to the temperature sensing line 31 is disconnected from the water inlet pipeline 1.

[0036] That is to say, when the temperature measured by a certain temperature sensing line 31 reaches or exceeds the preset temperature, it proves that the temperature at the position where the temperature sensing line 31 is located is too high. At this time, the control module can control the annular cooling pipeline 2 set at this position to be connected with the water inlet pipeline 1. For example, the second solenoid valve 21 set between the annular cooling pipeline 2 and the water inlet pipeline 1 at this position can be opened to realize the connection between the annular cooling pipeline 2 and the external cooling water source; when the temperature measured by a certain temperature sensing line 31 is lower than the preset temperature, it proves that the temperature at the position where the temperature sensing line 31 is located is normal. At this time, the control module can cut off the fluid connection between the annular cooling pipeline 2 and the water inlet pipeline 1 at this position. For example, the second solenoid valve 21 set between the annular cooling pipeline 2 and the water inlet pipeline 1 at this position can be closed to cut off the fluid connection between the annular cooling pipeline 2 and the external cooling water source.

[0037] As another embodiment of the temperature monitoring mechanism 3, the temperature monitoring mechanism 3 may include multiple temperature measuring points arranged on the inner wall of the raw coal bin 100, the positions of the multiple temperature measuring points may correspond one-to-one to the positions of the multiple annular cooling pipelines 2, and the multiple temperature measuring points may be respectively communicated with the control module, and the control module may be configured as follows: when the temperature measured by the temperature measuring point reaches or exceeds the preset temperature, the annular cooling pipeline 2 corresponding to the temperature measuring point is connected to the water inlet pipeline 1; when the temperature measured by the temperature measuring point is lower than the preset temperature, the annular cooling pipeline 2 corresponding to the temperature measuring point is disconnected from the water inlet pipeline 1.

[0038] refer to Figure 1 As shown, the anti-spontaneous combustion device may further include a water receiving tray 4 disposed below the raw coal bin 100 to recycle cooling water and avoid waste of water resources.

[0039] On the basis of the above technical solution, the present disclosure further provides a raw coal bunker, including the anti-spontaneous combustion device in the above technical solution.

[0040] Through the above technical solution, the raw coal bin provided by the present disclosure has the same technical effect as the anti-spontaneous combustion device in the above technical solution. In order to avoid unnecessary repetition, it will not be described here.

[0041] On the basis of the above technical solution, the present disclosure also provides a pulverizing system, including the raw coal bin in the above technical solution.

[0042] Through the above technical solution, the pulverizing system provided by the present disclosure has the same technical effect as the raw coal bin in the above technical solution. In order to avoid unnecessary repetition, it will not be described here.

[0043] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0044] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0045] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A device for preventing spontaneous combustion, characterized in that: include: The water inlet pipe is in fluid communication with an external cooling water source in an on-off manner. A plurality of annular cooling pipes surround the outer wall of the raw coal bunker, the plurality of annular cooling pipes are arranged at intervals in the vertical direction, and are respectively in fluid communication with the water inlet pipe in an intermittent manner. A plurality of spray nozzles are provided on one side of the annular cooling pipe facing the outer wall of the raw coal bunker. A temperature monitoring mechanism is provided on the inner wall of the raw coal bin, for monitoring the temperature in the raw coal bin, and The control module is communicatively connected to the temperature monitoring mechanism, and the control module is configured to control the connection and disconnection between each of the annular cooling pipelines and the water inlet pipeline according to the temperature measured by the temperature monitoring mechanism.

2. The anti-spontaneous combustion device according to claim 1, characterized in that: A first solenoid valve is provided on the water inlet pipeline, and the first solenoid valve is communicatively connected with the control module.

3. The anti-spontaneous combustion device according to claim 1, characterized in that: A second solenoid valve is provided between the annular cooling pipeline and the water inlet pipeline, and the second solenoid valve is in communication with the control module. The control module is configured to control the opening and closing of the second solenoid valve according to the temperature measured by the temperature monitoring mechanism.

4. The anti-spontaneous combustion device according to claim 1, characterized in that: The temperature monitoring mechanism includes a temperature sensing line arranged on the inner wall of the raw coal bin, and the temperature sensing line is communicatively connected with the control module.

5. The anti-spontaneous combustion device according to claim 4, characterized in that: The inner wall of the raw coal bin is provided with a plurality of temperature sensing lines, the positions of the plurality of temperature sensing lines correspond one to one with the positions of the plurality of annular cooling pipelines, and the plurality of temperature sensing lines are respectively connected to the control module for communication. The control module is configured as follows: when the temperature measured by the temperature sensing line reaches or exceeds the preset temperature, the annular cooling pipeline corresponding to the temperature sensing line is connected to the water inlet pipeline; when the temperature measured by the temperature sensing line is lower than the preset temperature, the annular cooling pipeline corresponding to the temperature sensing line is disconnected from the water inlet pipeline.

6. The anti-spontaneous combustion device according to claim 1, characterized in that: The temperature monitoring mechanism includes a plurality of temperature measuring points arranged on the inner wall of the raw coal bin, the positions of the plurality of temperature measuring points corresponding to the positions of the plurality of annular cooling pipelines, and the plurality of temperature measuring points are respectively connected to the control module for communication. The control module is configured to: when the temperature measured at the temperature measuring point reaches or exceeds a preset temperature, connect the annular cooling pipeline corresponding to the temperature measuring point to the water inlet pipeline; when the temperature measured at the temperature measuring point is lower than the preset temperature, disconnect the annular cooling pipeline corresponding to the temperature measuring point from the water inlet pipeline.

7. The anti-spontaneous combustion device according to claim 1, characterized in that: The anti-spontaneous combustion device also includes a water receiving tray arranged below the raw coal bin.

8. The anti-spontaneous combustion device according to claim 1, characterized in that: The external cooling water source is a fire water source.

9. A raw coal bunker, characterized in that: The device comprises the anti-spontaneous combustion device according to any one of claims 1 to 8.

10. A flour making system, characterized in that: Including the raw coal bunker as described in claim 9.

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