CN115092561A - Coal bunker spontaneous combustion prevention device and coal bunker - Google Patents

Coal bunker spontaneous combustion prevention device and coal bunker Download PDF

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Publication number
CN115092561A
CN115092561A CN202210633112.5A CN202210633112A CN115092561A CN 115092561 A CN115092561 A CN 115092561A CN 202210633112 A CN202210633112 A CN 202210633112A CN 115092561 A CN115092561 A CN 115092561A
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CN
China
Prior art keywords
coal bunker
combustible gas
ventilator
temperature
shutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210633112.5A
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Chinese (zh)
Inventor
刘彦辉
范楠
李永恩
任福勇
何曙光
王雪峰
曹景轩
郝朝瑜
邓存宝
刘生优
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Energy Hami Coal Power Co ltd
National Energy Group Guoyuan Power Co Ltd
Original Assignee
State Grid Energy Hami Coal Power Co ltd
National Energy Group Guoyuan Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Energy Hami Coal Power Co ltd, National Energy Group Guoyuan Power Co Ltd filed Critical State Grid Energy Hami Coal Power Co ltd
Priority to CN202210633112.5A priority Critical patent/CN115092561A/en
Publication of CN115092561A publication Critical patent/CN115092561A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
    • B65D88/742—Large containers having means for heating, cooling, aerating or other conditioning of contents using ventilating sheaths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
    • B65D88/745—Large containers having means for heating, cooling, aerating or other conditioning of contents blowing or injecting heating, cooling or other conditioning fluid inside the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/02—Wall construction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

The utility model relates to a prevent coal bunker spontaneous combustion device and coal bunker to prevent that the coal bunker is piled up because of combustible gas and dust, and the poor problem that arouses spontaneous combustion of thermal diffusivity. The device comprises an air inlet, a ventilator and an air outlet; the air inlet is arranged on the side wall of the upper end of the coal bunker body and is connected with a flue gas discharge pipeline of a thermal power plant; the ventilator is arranged on the air inlet hole, the air supply direction of the ventilator is the same as the air inlet direction of the air inlet hole, and therefore the flue gas of the thermal power plant is introduced into the coal bunker through the air inlet hole; the exhaust hole is formed in the side wall of the upper end, opposite to the air inlet hole, of the coal bunker body and used for discharging combustible gas and high-temperature gas in the coal bunker.

Description

Coal bunker spontaneous combustion prevention device and coal bunker
Technical Field
The disclosure relates to the technical field of coal-fired power generation, in particular to a coal bunker spontaneous combustion prevention device and a coal bunker.
Background
The coal of thermal power factory can be deposited for a long time in the coal bunker, and the coal is placed in the coal bunker and can constantly release combustible gas such as methane, carbon monoxide, because the coal bunker environment is airtight, the circulation of air is not smooth, combustible gas gathers in the coal bunker, and the heat dissipation condition is poor in the coal bunker in addition, and dust concentration is big in the coal bunker, arouses the coal spontaneous combustion easily, causes the incident, consequently, the spontaneous combustion problem that leads to is piled up to combustible gas in the prevention coal bunker is crucial.
Disclosure of Invention
In order to achieve the above purpose, the present disclosure provides a device for preventing spontaneous combustion of a coal bunker and the coal bunker, so as to prevent the problem of spontaneous combustion of the coal bunker due to accumulation of combustible gas and dust and poor heat dissipation.
In order to achieve the above objects, in a first aspect, the present disclosure provides a device for preventing spontaneous combustion of a coal bunker, comprising an air inlet, a ventilator, and an air outlet;
the air inlet is arranged on the side wall of the upper end of the coal bunker body and is connected with a flue gas discharge pipeline of a thermal power plant;
the ventilator is arranged on the air inlet hole, and the air supply direction of the ventilator is the same as the air inlet direction of the air inlet hole, so that the flue gas of the thermal power plant is introduced into the coal bunker through the air inlet hole;
the exhaust hole is formed in the side wall of the upper end of the coal bunker body, opposite to the air inlet hole, and is used for exhausting combustible gas and high-temperature gas in the coal bunker.
Optionally, the exhaust device further comprises a louver, the louver is arranged on the exhaust hole, and the ventilation direction of the louver is consistent with the ventilation direction of the exhaust hole;
the shutter comprises a window body, a swinging plate and a rotating shaft, wherein the swinging plate is installed in the window body through the rotating shaft.
Optionally, the system further comprises an acquisition module and a control module;
the collecting module is used for collecting the concentration and/or the temperature of the combustible gas in the coal bunker;
the control module is connected with the ventilator, the shutter and the acquisition module and used for controlling the ventilator and the shutter to be opened and closed according to the concentration and/or the temperature of the combustible gas acquired by the acquisition module.
Optionally, the control module is configured to:
controlling the ventilator and the shutter to open in the event that the combustible gas concentration is greater than a first combustible gas concentration threshold and/or the temperature is greater than a first temperature threshold;
controlling the ventilator and the shutter to close when the combustible gas concentration is equal to or less than the first combustible gas concentration threshold value and/or the temperature is equal to or less than the first temperature threshold value.
Optionally, the control module is configured to:
under the condition that the combustible gas concentration is greater than a second combustible gas concentration threshold value and/or the temperature is greater than a second temperature threshold value, controlling the air volume and the air speed of the ventilator to a first preset value, and controlling a swinging plate of the shutter to adjust to a first preset angle, wherein the second combustible gas concentration threshold value is greater than the first combustible gas concentration threshold value, and the second temperature threshold value is greater than the first temperature threshold value;
and under the condition that the combustible gas concentration is less than or equal to the second combustible gas concentration threshold value and/or the temperature is less than or equal to the second temperature threshold value, controlling the air volume and the air speed of the ventilator to a second preset value, and controlling the swinging plate of the shutter to adjust to a second preset angle, wherein the first preset value is greater than the second preset value, and the first preset angle is greater than the second preset angle.
Optionally, the system further comprises a processing module;
the processing module is connected with the acquisition module and the control module and used for sending a control signal to the control module according to the concentration of the combustible gas and/or the temperature, so that the control module can control the ventilator and the shutter to be opened and closed according to the control signal.
Optionally, the ventilator further comprises a timing module, the timing module is connected with the processing module and is used for sending a time signal to the processing module at a preset time point, and the processing module sends a control signal to the control module according to the time signal, so that the control module controls the ventilator and the louver to be opened and closed according to the control signal.
Optionally, a control panel is included for controlling the opening and closing of the ventilator and the louvers.
Optionally, the ventilator further comprises a protective cover, wherein the protective cover is arranged at the upper edge of the air inlet hole and the upper edge of the air outlet hole and used for protecting the air inlet hole, the air outlet hole and the ventilator.
In a second aspect, the present disclosure also provides a coal bunker including the device for preventing spontaneous combustion of the coal bunker according to any one of the first aspect.
Through the device, the inlet port, ventilation blower and exhaust hole all can set up the upper end lateral wall at the bunker body, the inlet port, the bunker hollow area, exhaust hole forms a ventilation channel, under the effect of ventilation blower, pass through the inlet port with the flue gas of thermal power factory and introduce in the bunker, and pass through the exhaust hole with combustible gas and the high-temperature gas in the bunker and discharge, the flow of ventilation air current in the bunker has been promoted, thereby combustible gas and the high-temperature gas in the bunker have been reduced, the spontaneous combustion of prevention bunker, the emission of flue gas has still been controlled simultaneously, the treatment cost of flue gas has been reduced, workman's intensity of labour has been reduced, the safety in production efficiency has been improved.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic diagram illustrating a configuration of a coal bunker auto-ignition prevention device in accordance with an exemplary embodiment;
FIG. 2 is a schematic view showing the positions of another intake and exhaust hole according to an exemplary embodiment;
FIG. 3 is a schematic view of a structure of a blind according to an exemplary embodiment;
FIG. 4 is a schematic diagram illustrating an alternative configuration of a bunker auto-ignition prevention device in accordance with an exemplary embodiment;
FIG. 5 is a flow chart illustrating operation of an apparatus for preventing spontaneous combustion of a coal bunker in accordance with an exemplary embodiment.
Description of the reference numerals
1-coal bunker body 2-air inlet
3-ventilator 4-exhaust hole
5-shutter 6-acquisition module
7-control Module 8-processing Module
9-swinging plate 10-rotating shaft
Detailed Description
The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are intended for purposes of illustration and explanation only and are not intended to limit the present disclosure.
It should be noted that all actions of acquiring signals, information or data in the present disclosure are performed under the premise of complying with the corresponding data protection regulation policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.
In order to solve the problems, the disclosure provides a device for preventing a coal bunker from spontaneous combustion and the coal bunker, wherein the side wall of the upper end of a bunker body of the coal bunker is provided with an air inlet, a ventilator and an exhaust hole, so that a ventilation channel is formed at the upper end in the coal bunker, and under the action of the ventilator, the combustible gas and the high-temperature gas in the coal bunker are replaced by the smoke of a thermal power plant, so that spontaneous combustion caused by accumulation of the combustible gas and dust in the coal bunker and poor heat dissipation performance is prevented.
Fig. 1 is a schematic configuration diagram illustrating a coal bunker spontaneous combustion prevention apparatus according to an exemplary embodiment, and as shown in fig. 1, the coal bunker spontaneous combustion prevention apparatus includes an air intake hole 2, a ventilator 3, and an exhaust hole 4;
the air inlet 2 is arranged on the side wall of the upper end of the coal bunker body 1 and is connected with a flue gas discharge pipeline of a thermal power plant;
the ventilator 3 is arranged on the air inlet hole 2, and the air supply direction of the ventilator 3 is the same as the air inlet direction of the air inlet hole 2, so that the flue gas of the thermal power plant is introduced into the coal bunker through the air inlet hole 2;
the exhaust hole 4 is arranged on the side wall of the upper end of the coal bunker body 1 opposite to the air inlet hole 2 and used for discharging combustible gas and high-temperature gas in the coal bunker.
It should be understood that, when coal is placed in a coal bunker, combustible gas such as methane, carbon monoxide and the like is released continuously, and the coal bunker is a semi-closed space, compared with air, the combustible gas has higher density, and a large amount of combustible gas flows along the wind direction and is finally gathered at the top of the coal bunker. Therefore, as shown in fig. 1, the air inlet 2, the ventilator 3 and the air outlet 4 can be arranged on the upper side wall of the coal bunker body 1, the air inlet 2, the coal bunker hollow area and the air outlet 4 form a ventilation channel, the air supply direction of the ventilator 3 is the same as the air inlet direction of the air inlet 2, under the action of the ventilator 3, the upper space in the coal bunker is in a positive pressure state, and the outside of the coal bunker is in a negative pressure state, so that a large amount of combustible gas in the coal bunker is discharged.
For example, as shown in fig. 2, the exhaust hole 4 may be disposed on an upper end side wall opposite to the air inlet hole 2, and of course, a plurality of air inlet holes 2, a plurality of ventilators 3, and a plurality of exhaust holes 4 may also be disposed at other positions on a side wall of the coal bunker body 1, which is not limited in this respect in the embodiment of the present disclosure.
In addition, when the coal is used as the fuel in the thermal power plant to produce electric energy, a large amount of flue gas can be generated, and the main components of the flue gas are nitrogen and carbon dioxide, so that the air inlet 2 can be connected with a flue gas discharge pipeline of the thermal power plant in the embodiment of the disclosure, and the flue gas is used as replacement gas for replacing combustible gas in the coal bunker, so that the emission of the flue gas is controlled while spontaneous combustion of the coal bunker is prevented, and the treatment cost of the flue gas is reduced. Of course, other non-combustible gases may be used to replace the combustible gas in the coal bunker, and the embodiment of the disclosure is not limited thereto.
Through the device, inlet port 2, ventilation blower 3 and exhaust hole 4 all can set up the upper end lateral wall at the bunker body 1, inlet port 2, the bunker hollow area, exhaust hole 4 forms a ventilation channel, under ventilation blower 3's effect, pass through inlet port 2 with the flue gas of thermal power factory and introduce in the bunker, and discharge combustible gas and the high-temperature gas in the bunker through exhaust hole 4, the flow of ventilation air current in the bunker has been promoted, thereby combustible gas and the high-temperature gas in the bunker have been reduced, the spontaneous combustion of prevention bunker, the emission of flue gas has still been controlled simultaneously, the treatment cost of flue gas has been reduced, workman's intensity of labour has been reduced, the efficiency of safe production has been improved.
In an embodiment, the device for preventing the coal bunker from spontaneous combustion further comprises a louver 5, the louver 5 is arranged on the exhaust hole 4, and the ventilation direction of the louver 5 is consistent with the ventilation direction of the exhaust hole 4, as shown in fig. 3, the louver 5 may comprise a window body, a swing plate 9 and a rotating shaft 10, wherein the swing plate 9 is installed in the window body through the rotating shaft 10.
It should be understood that the swing plate 9 of the louver 5 may swing supported by the rotation shaft 10 to control the opening and closing of the louver 5, and thus the opening and closing of the exhaust hole 4. Therefore, the ventilation direction of the shutter 5 can be consistent with the ventilation direction of the exhaust hole 4, namely the exhaust hole 4 is also in an open state when the shutter 5 is opened, so that combustible gas and high-temperature gas in the coal storage bin can be exhausted through the exhaust hole 4, the exhaust hole 4 is also in a closed state when the shutter 5 is closed, and the combustible gas and the high-temperature gas in the coal storage bin cannot be exhausted through the exhaust hole 4. The embodiment of the present disclosure does not limit the specific style, material, size, etc. of the louver 5, and may be selected according to the actual situation such as the size of the exhaust hole 4. Of course, the opening and closing of the air vent 4 can be controlled by controlling other devices that can be pushed, pulled or folded, and the embodiment of the present disclosure is not limited to this.
In an embodiment, as shown in fig. 4, the device for preventing spontaneous combustion of a coal bunker further includes an acquisition module 6 and a control module 7, the acquisition module 6 is used for acquiring the concentration and/or temperature of combustible gas in the coal bunker, and the control module 7 is connected with the ventilator 3, the shutter 5 and the acquisition module 6 and is used for controlling the opening and closing of the ventilator 3 and the shutter 5 according to the concentration and/or temperature of combustible gas acquired by the acquisition module 6.
For example, since a large amount of combustible gas flows along the wind direction and finally gathers at the top of the coal bunker, as shown in fig. 4, the collection module 6 may be disposed at the upper end side wall or the top of the coal bunker body 1, which is not limited in the embodiment of the present disclosure.
The collection module 6 can comprise a combustible gas concentration collection module and a temperature collection module, wherein the combustible gas concentration collection module is used for collecting the combustible gas concentration in the coal bunker, and the temperature collection module is used for the temperature in the coal bunker. Wherein, combustible gas concentration acquisition module can be combustible gas monitor probe, and temperature acquisition module can be temperature sensor. Similarly, the collection module 6 may be an integrated module having both the combustible gas concentration collection function and the temperature collection function. The embodiment of the disclosure is not limited to this, and in specific implementation, different modes can be selected according to actual conditions to monitor the concentration and the degree of the combustible gas in the coal bunker.
In one embodiment, the control module 7 is configured to: controlling the ventilator 3 and the shutter 5 to be opened under the condition that the combustible gas concentration is greater than a first combustible gas concentration threshold value and/or the temperature is greater than a first temperature threshold value; and controlling the ventilator 3 and the shutter 5 to be closed under the condition that the combustible gas concentration is less than or equal to a first combustible gas concentration threshold value and/or the temperature is less than or equal to a first temperature threshold value.
The device for preventing the spontaneous combustion of the coal bunker may further include a relay connected to the ventilator 3, the shutter 5 and the control module 7, and may control the ventilator 3 and the shutter 5 to be opened by controlling the relay to be closed in the case that the combustible gas concentration is greater than the first combustible gas concentration threshold and/or the temperature is greater than the first temperature threshold; and under the condition that the combustible gas concentration is greater than the first combustible gas concentration threshold value and/or the temperature is less than or equal to the first temperature threshold value, controlling the relay to be switched off so as to control the ventilator 3 and the shutter 5 to be switched off.
In one embodiment, the control module 7 is configured to: under the condition that the concentration of the combustible gas is greater than a second combustible gas concentration threshold and/or the temperature is greater than a second temperature threshold, controlling the air volume and the air speed of the ventilator 3 to reach a first preset value, and controlling the swinging plate 9 of the shutter 5 to adjust to a first preset angle, wherein the second combustible gas concentration threshold is greater than the first combustible gas concentration threshold, and the second temperature threshold is greater than the first temperature threshold; and under the condition that the concentration of the combustible gas is less than or equal to a second combustible gas concentration threshold value and/or the temperature is less than or equal to a second temperature threshold value, controlling the air volume and the air speed of the ventilator 3 to a second preset value, and controlling the swinging plate 9 of the shutter 5 to adjust to a second preset angle, wherein the first preset value is greater than the second preset value, and the first preset angle is greater than the second preset angle.
It will be appreciated that in order to increase the rate of replacement of the gas in the bunker, a second combustible gas concentration threshold value and a second temperature threshold value may be provided, the second combustible gas concentration threshold value being greater than the first combustible gas concentration threshold value, the second temperature threshold value being greater than the first temperature threshold value, so as to increase the air volume and air speed of the ventilator 3 in the event of an excessive combustible gas concentration (i.e. greater than the first combustible gas concentration threshold value) and/or a high temperature (i.e. greater than the first temperature threshold value), and to adjust the flap 9 of the shutter 5 to increase the opening and closing angle of the shutter 5, thereby increasing the rate of replacement of the gas in the bunker.
In order to save energy, the air volume and the air speed of the ventilator 3 may be reduced to initial values in the case where the combustible gas concentration is equal to or less than the first combustible gas concentration threshold value and/or the temperature is equal to or less than the first temperature threshold value, and the swing plate 9 of the louver 5 may be adjusted to reduce the opening and closing angle of the louver 5 to the initial values. In this way, the safety requirements are met with a minimum of energy consumption. It is also possible to reduce the air volume and the air speed of the ventilator 3 to the initial values after a preset time period, and adjust the swing plate 9 of the louver 5 to reduce the opening and closing angle of the louver 5 to the initial values, for example, to the initial values after 15 minutes, which is not limited by the embodiment of the present disclosure.
In an embodiment, as shown in fig. 4, the device for preventing spontaneous combustion of the coal bunker further comprises a processing module 8, and the processing module 8 is connected with the collecting module 6 and the control module 7 and is used for sending a control signal to the control module 7 according to the concentration and/or the temperature of the combustible gas, so that the control module 7 controls the ventilator 3 and the shutter 5 to be opened and closed according to the control signal.
Illustratively, after the combustible gas concentration and/or temperature in the coal bunker are acquired by the acquisition module 6, the combustible gas concentration and/or temperature data in the current coal bunker are sent to the processing module 8, the processing module 8 determines whether the gas in the coal bunker needs to be replaced according to the acquired data information and the pre-stored first combustible gas concentration threshold and/or first temperature threshold information, generates a control signal for controlling the ventilator 3 and the louver 5 after determining that the gas in the coal bunker needs to be replaced, and sends the control signal to the control module 7, and the control module 7 receives the control signal and controls the ventilator 3 and the louver 5 according to the control signal.
It should be understood that the processes of acquiring the combustible gas concentration and/or temperature data in the coal bunker by the acquisition module 6, sending the acquired data information to the control module 7 by the acquisition module 6, generating a control signal by the control module 7 according to the received data information, and the like may be performed in real time, that is, the acquisition module 6 always acquires the combustible gas concentration and/or temperature in the coal bunker, and triggers the subsequent operation when the combustible gas concentration and/or temperature data reaches a preset threshold value. Preset time intervals can also be set, and the acquisition module 6 acquires the concentration and/or the temperature of the combustible gas in the coal bunker at each preset time interval point. The disclosed embodiments are not limited in this regard.
In an embodiment, the device for preventing spontaneous combustion of the coal bunker further comprises a timing module, the timing module is connected with the processing module 8 and is used for sending a time signal to the processing module 8 at a preset time point, and the processing module 8 sends a control signal to the control module 7 according to the time signal, so that the control module 7 controls the opening and closing of the ventilator 3 and the shutter 5 according to the control signal.
For example, in order to perform the gas replacement in the coal bunker in a targeted manner under different conditions, the device for preventing the spontaneous combustion of the coal bunker may further include a timing module, which sends a time signal to the processing module 8 at a preset time point, the processing module 8 sends a control signal to the control module 7 according to the time signal, the opening and closing of the ventilator 3 and the shutter 5 may be controlled at the preset time point, and the ventilator 3 and the shutter 5 may be further turned on for the gas replacement in the coal bunker within the preset time period. The preset time point may be set manually by a worker, or may be calculated and generated according to a statistical condition of the combustible gas concentration and/or the temperature of the coal bunker in a certain time period, which is not limited in this embodiment of the disclosure.
Meanwhile, in this case, the acquisition module 6 may also be started, and the air volume and the air speed of the ventilator 3 and the swing plate of the louver 5 may be adjusted according to the data information acquired by the acquisition module 6 to adjust the opening and closing angle of the louver 5, so as to adjust the replacement rate of the gas in the bunker, which is not limited in the embodiment of the present disclosure.
In one embodiment, the coal bunker spontaneous combustion prevention device further comprises a control panel for controlling the opening and closing of the ventilator 3 and the shutter 5.
For example, in order to achieve more humanized control in the process of preventing the coal bunker from spontaneously combusting, the coal bunker spontaneous combustion preventing device can further comprise a control panel, and workers can control the ventilator 3 and the shutter 5 by operating the control panel at any time. The control panel may include a control button for controlling the opening and closing of the ventilator 3, a control button for controlling the opening and closing of the louver 5, an adjusting button for adjusting the air volume and the air speed of the ventilator 3, and an adjusting button for controlling the swinging plate of the louver 5.
The control panel can also comprise a display screen for displaying the concentration and the temperature of the combustible gas in the coal bunker and the working conditions of the ventilator 3 and the shutter 5; the control panel may also comprise voice recognition means for controlling the ventilator 3 and the shutter 5 according to voice commands of the staff. The control panel can be installed outside the coal bunker in a wired mode, and can also be arranged on an operation room or other terminal equipment in a wireless mode. The embodiment of the present disclosure does not limit the specific form and function of the control panel.
In one embodiment, the coal bunker spontaneous combustion preventing device further comprises a protective cover, wherein the protective cover is arranged at the upper edge of the air inlet hole 2 and the upper edge of the air outlet hole 4 and used for protecting the air inlet hole 2, the air outlet hole 4 and the ventilator 3.
It should be understood that, in order to avoid rainwater and the like entering the ventilator 3 and the coal bunker, causing equipment damage and coal pollution, the coal bunker spontaneous combustion prevention device further comprises a protective cover, the protective cover can be arranged at the upper edge of the air inlet hole 2 and the upper edge of the air outlet hole 4, and the number, the size and the material of the protective cover are not limited by the embodiment of the disclosure.
In an embodiment, the coal bunker spontaneous combustion prevention device further comprises a loudspeaker, the loudspeaker is connected with the acquisition module 6, and the loudspeaker gives a prompt when the concentration of the combustible gas is greater than the first combustible gas concentration threshold value and/or the temperature is greater than the first temperature threshold value.
FIG. 5 is a flowchart illustrating an operation of a bunker auto-ignition prevention device, according to an exemplary embodiment, the operation of the bunker auto-ignition prevention device, as shown in FIG. 5, including:
s501: the coal bunker spontaneous combustion device is prevented from being started.
S502: and determining whether the timing module has timing data, if the timing module has no timing data, executing step S503, otherwise, executing step S509.
S503: and starting the acquisition module 6 to acquire the concentration threshold value and/or the temperature of the combustible gas in the coal bunker and sending the concentration threshold value and/or the temperature to the processing module 8.
S504: the processing module 8 determines whether the combustible gas concentration is greater than a first combustible gas concentration threshold and/or the temperature is greater than a first temperature threshold according to the data information acquired by the acquisition module 6, if so, executes step S505, otherwise, returns to step S504.
S505: the processing module 8 sends a control instruction to the control module 7.
S506: the control module 7 controls the ventilator 3 and the shutter 5 to open.
S507: and under the condition that the concentration of the combustible gas is greater than a second combustible gas concentration threshold value and/or the temperature is greater than a second temperature threshold value, controlling the air volume and the air speed of the ventilator 3 to be first preset values, and controlling the swinging plate 9 of the shutter 5 to be adjusted to be a first preset angle.
S508: and under the condition that the combustible gas concentration is less than or equal to a second combustible gas concentration threshold value and/or the temperature is less than or equal to a second temperature threshold value, controlling the air quantity and the air speed of the ventilator 3 to initial values, and controlling the swinging plate 9 of the shutter 5 to adjust to the initial values.
S509: the timing module sends a timing instruction to the processing module 8.
S510: the processing module 8 sends a control instruction to the control module 7 according to the timing instruction.
S511: the control module 7 controls the ventilator 3 to be opened according to the control instruction, adjusts the air volume and the air speed to a second preset value, controls the shutter 5 to be opened, and adjusts the swing plate 9 to a second preset angle. The second preset value and the second preset angle may be stored in the timing module together with the timing data.
Adopt above-mentioned prevention coal bunker spontaneous combustion device, can be according to the combustible gas concentration and/or the temperature that collection module gathered, control ventilation blower and shutter open or close, make the inlet port when ventilation blower and shutter open, the coal bunker hollow space, the exhaust hole forms a ventilation passageway, introduce the flue gas of thermal power factory in the coal bunker through the inlet port, and pass through the exhaust hole with combustible gas and the high-temperature gas in the coal bunker and discharge, the flow of ventilation gas flow in the coal bunker has been promoted, thereby combustible gas and the high-temperature gas in the coal bunker have been reduced, the spontaneous combustion of prevention coal bunker, the emission of flue gas has still been controlled simultaneously, the treatment cost of flue gas has been reduced, workman's intensity of labour has been reduced, the safe production efficiency has been improved. Furthermore, the air quantity and the air speed of the ventilator and the opening and closing angle of the shutter can be adjusted according to the concentration and/or the temperature of the combustible gas collected by the collecting module, so that the gas replacement rate in the coal bunker is increased, and the safety requirement is met under the condition of minimum energy consumption.
Based on the same conception, the disclosure also provides a coal bunker, which comprises any one of the coal bunker spontaneous combustion prevention devices.
The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and many simple modifications may be made to the technical solution of the present disclosure within the scope of the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (10)

1. A device for preventing the spontaneous combustion of a coal bunker is characterized by comprising an air inlet, a ventilator and an air outlet;
the air inlet is arranged on the side wall of the upper end of the coal bunker body and is connected with a flue gas discharge pipeline of a thermal power plant;
the ventilator is arranged on the air inlet hole, and the air supply direction of the ventilator is the same as the air inlet direction of the air inlet hole, so that the flue gas of the thermal power plant is introduced into the coal bunker through the air inlet hole;
the exhaust hole is formed in the side wall of the upper end of the coal bunker body, opposite to the air inlet hole, and is used for exhausting combustible gas and high-temperature gas in the coal bunker.
2. The device for preventing the spontaneous combustion of the coal bunker as recited in claim 1, further comprising a shutter, wherein the shutter is arranged on the exhaust hole, and the ventilation direction of the shutter is consistent with the ventilation direction of the exhaust hole;
the shutter comprises a window body, a swinging plate and a rotating shaft, wherein the swinging plate is installed in the window body through the rotating shaft.
3. The coal bunker spontaneous combustion preventing device according to claim 2, further comprising an acquisition module and a control module;
the collecting module is used for collecting the concentration and/or the temperature of the combustible gas in the coal bunker;
the control module is connected with the ventilator, the louver and the acquisition module and used for controlling the ventilator and the louver to be opened and closed according to the concentration and/or the temperature of the combustible gas acquired by the acquisition module.
4. The coal bunker auto-ignition prevention device of claim 3, wherein the control module is configured to:
controlling the ventilator and the shutter to open in the event that the combustible gas concentration is greater than a first combustible gas concentration threshold and/or the temperature is greater than a first temperature threshold;
controlling the ventilator and the shutter to close when the combustible gas concentration is equal to or less than the first combustible gas concentration threshold and/or the temperature is equal to or less than the first temperature threshold.
5. The coal bunker auto-ignition prevention device of claim 4, wherein the control module is configured to:
under the condition that the combustible gas concentration is greater than a second combustible gas concentration threshold and/or the temperature is greater than a second temperature threshold, controlling the air quantity and the air speed of the ventilator to be first preset values, and controlling a swinging plate of the shutter to be adjusted to a first preset angle, wherein the second combustible gas concentration threshold is greater than the first combustible gas concentration threshold, and the second temperature threshold is greater than the first temperature threshold;
and under the condition that the combustible gas concentration is less than or equal to the second combustible gas concentration threshold value and/or the temperature is less than or equal to the second temperature threshold value, controlling the air volume and the air speed of the ventilator to a second preset value, and controlling the swinging plate of the shutter to adjust to a second preset angle, wherein the first preset value is greater than the second preset value, and the first preset angle is greater than the second preset angle.
6. The coal bunker spontaneous combustion prevention device of claim 3, further comprising a processing module;
the processing module is connected with the acquisition module and the control module and used for sending a control signal to the control module according to the concentration of the combustible gas and/or the temperature, so that the control module can control the ventilator and the shutter to be opened and closed according to the control signal.
7. The device of claim 6, further comprising a timing module, wherein the timing module is connected to the processing module and configured to send a time signal to the processing module at a predetermined time point, and the processing module sends a control signal to the control module according to the time signal, so that the control module controls the ventilator and the shutter to open and close according to the control signal.
8. The coal bunker auto-ignition prevention device of claim 1, further comprising a control panel for controlling opening and closing of the ventilator and the shutter.
9. The coal bunker spontaneous combustion prevention device of claim 1, further comprising a protective cover mounted at an upper edge of the air inlet hole and an upper edge of the air outlet hole for protecting the air inlet hole, the air outlet hole and the ventilator.
10. A coal bunker comprising the device for preventing spontaneous combustion of a coal bunker as claimed in any of claims 1 to 9.
CN202210633112.5A 2022-06-06 2022-06-06 Coal bunker spontaneous combustion prevention device and coal bunker Pending CN115092561A (en)

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CN202210633112.5A CN115092561A (en) 2022-06-06 2022-06-06 Coal bunker spontaneous combustion prevention device and coal bunker

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CN202210633112.5A CN115092561A (en) 2022-06-06 2022-06-06 Coal bunker spontaneous combustion prevention device and coal bunker

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