CN210762356U - Inerting protection device for coal storage silo - Google Patents
Inerting protection device for coal storage silo Download PDFInfo
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- CN210762356U CN210762356U CN201921552720.3U CN201921552720U CN210762356U CN 210762356 U CN210762356 U CN 210762356U CN 201921552720 U CN201921552720 U CN 201921552720U CN 210762356 U CN210762356 U CN 210762356U
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Abstract
The utility model discloses a store up coal silo with inertization protection device relates to inertization protection device technical field, for solving the current not good problem of inertization protection device fire prevention effect. The coal storage silo is characterized in that a pressure relief explosion door is arranged above the coal storage silo main body, a feed inlet is formed in one side of the pressure relief explosion door, a nitrogen storage tank is arranged on one side of the coal storage silo main body, an air supply main pipe is arranged at one end of the nitrogen storage tank, a pressure reducing mechanism is arranged inside the air supply main pipe, a main valve is arranged on one side of the pressure reducing mechanism, an air supply branch pipe is arranged at one end of the air supply main pipe, a first partition valve is arranged inside the air supply branch pipe, a second partition valve is arranged above the first partition valve, a third partition valve is arranged above the second partition valve, a nitrogen nozzle is arranged at one end of the air supply branch pipe, an air locking ring is arranged inside the coal storage silo main body, and an air charging ring is arranged above the air locking.
Description
Technical Field
The utility model relates to an inerting protection device technical field specifically is a coal storage silo is with inerting protection device.
Background
Coal storage is an important link in the process flow of a coal conveying system of a thermal power plant, and in order to solve the problems of open stacking and environmental pollution of bulk coal, the conditions of silo coal storage and coal distribution adopted by the thermal power plant are increasingly built in China at present. The occupied area of the silo is small, and the occupied area of the coal silo under the same storage capacity is only 1/3-1/2 of the area of an open-air storage yard; the silo is used as a facility for storing bulk materials, and has the advantages of simple structure, convenient use, small environmental pollution and the like. However, coal has the characteristics of spontaneous combustion and volatile harmful gas, and the coal stored by a silo has the risks of fire, explosion and the like. The prior examples of fire and explosion of the silo in China are not favorable for heat dissipation in a limited and relatively sealed space. The conventional monitoring facilities of the silo, such as sensors for temperature, combustible gas and the like, can not accurately forecast in time. If the spontaneous combustion range is large, the heat quantity is high, the combustible gas concentration is large, and the timing of treatment is delayed by forecasting. Fire extinguishment after fire in a silo is difficult and only preventive control is considered. When raw coal needs to be stored for a long time, particularly, coal types with high spontaneous combustion tendency and explosion grade belonging to A class are more urgent.
The existing inerting protection device has poor fireproof effect; therefore, the existing requirements are not met, and an inerting protection device for a coal silo is provided for the same.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a store up coal silo with inerting protection device to solve the current inerting protection device that provides among the above-mentioned background art not good problem of fire prevention effect.
In order to achieve the above object, the utility model provides a following technical scheme: the inerting protection device for the coal storage silo comprises a coal storage silo main body, wherein a pressure relief explosion-proof door is arranged above the coal storage silo main body, a feed inlet is formed in one side of the pressure relief explosion-proof door, a nitrogen storage tank is arranged on one side of the coal storage silo main body, an air supply main pipe is arranged at one end of the nitrogen storage tank, a pressure reduction mechanism is arranged inside the air supply main pipe, a main valve is arranged on one side of the pressure reduction mechanism, an air supply branch pipe is arranged at one end of the air supply main pipe, a first partition valve is arranged inside the air supply branch pipe, a second partition valve is arranged above the first partition valve, and a second partition valve is arranged above the second partition valveThere is the third subregion valve, the one end of air feed branch pipe is provided with the nitrogen gas nozzle, the inside of coal storage silo main part is provided with the gas locking ring, the top of gas locking ring is provided with the ring of aerifing, the top of ring of aerifing is provided with the ring of taking a breath, one side of ring top of taking a breath is provided with the charge level indicator, one side of charge level indicator is provided with smoke transducer, one side of smoke transducer is provided with CH4The coal silo comprises a sensor, wherein a stair is arranged at the rear end of a coal silo main body, one side of the stair is provided with four maintenance platforms, and a lifter is arranged at the rear end of each maintenance platform.
Preferably, a protective cover is arranged on the outer wall of the nitrogen nozzle.
Preferably, both sides of the elevator are provided with an overhaul elevator.
Preferably, one side of the main valve is provided with an inerting control box.
Preferably, the CH4And a CO sensor is arranged on one side of the sensor.
Preferably, the nitrogen nozzle is fixedly connected with the air exchange ring, the inflation ring and the air locking ring respectively.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a setting of nitrogen gas storage tank and inerting control box, adopt nitrogen gas to carry out local protection as inerting protection device's working medium to the inside easy ignition of coal storage silo, the nitrogen gas of pouring into is less than air density, can reach the best inerting effect, and inerting control box can start different inerting protection function according to the alarm signal of different ranks, when the inerting system received the program control system elementary start signal of coal transportation (the coal storage stews for several days), pin out the coal mouth with nitrogen gas, thereby prevent the air from permeating to the coal storage layer inside by going out the coal mouth, avoid the production of "dryer effect"; when the inerting system receives a medium-level starting signal (spontaneous combustion tendency and abnormality are found) of the coal conveying program control system, the nitrogen charging system automatically permeates high-purity nitrogen into the coal bed, so that the purposes of reducing the concentration of combustible gas and reducing combustion-supporting distance and the temperature of the coal bed are achieved; when the system detects a high-grade starting signal (after nitrogen is injected, spontaneous combustion continues to develop), the inerting system automatically starts to operate, the nearest gas exchange layer on the surface of the coal bed is opened by utilizing the function of the automatic tracking gas exchange column, inert gas covers the surface of the coal bed, the dangerous gas in the upper space of the coal bed in the silo is discharged from the top of the silo along with the gradual increase of the inert gas, the purpose of replacing the dangerous gas by the inert gas is achieved, the explosion door is used for relieving the air pressure in the silo, when the pressure in the silo reaches a certain value, the explosion door is automatically opened to prevent secondary explosion, and the normal operation of silo equipment is protected.
2. The arrangement of the maintenance platform, the stairs and the maintenance elevator facilitates the maintenance and replacement of detection instruments and gas ring accessories of each gas ring layer on the maintenance platform, the protective cover 24 has high temperature resistance (up to 650 ℃), high wear resistance, high toughness, high crack resistance and higher impact and wear resistance performance by pre-embedding the protective cover at the inner wall of the silo of each nitrogen nozzle, so that the service life of the nitrogen nozzle 23 is greatly prolonged, the smashing loss of the nitrogen nozzle of an inerting protection system possibly caused by crushed coal in the silo in the blanking process is avoided, and the blockage caused by the fact that the pulverized coal falls into a nitrogen injection pipeline is prevented.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a rear view schematic structural view of the main body of the coal storage silo of the present invention;
FIG. 3 is a schematic view of the enlarged structure of the part A of the present invention;
in the figure: 1. a coal storage silo main body; 2. a nitrogen storage tank; 3. a pressure reducing mechanism; 4. a main valve; 5. An inerting control box; 6. a first partition valve; 7. a second partition valve; 8. a third partition valve; 9. a gas supply branch pipe; 10. a pressure relief explosion vent; 11. a feed inlet; 12. a level gauge; 13. a smoke sensor; 14. CH (CH)4A sensor; 15. a CO sensor; 16. a gas exchange ring; 17. an air-filled ring; 18. a gas locking ring; 19. A main gas supply pipe; 20. overhauling the elevator; 21. an elevator; 22. overhauling the platform; 23. a nitrogen nozzle; 24. a protective cover; 25. stairs.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, the present invention provides an embodiment: an inerting protection device for a coal silo comprises a coal silo main body 1, a pressure relief explosion-proof door 10 is arranged above the coal silo main body 1 and used for relieving air pressure inside the coal silo, a feed inlet 11 is arranged on one side of the pressure relief explosion-proof door 10, a nitrogen storage tank 2 is arranged on one side of the coal silo main body 1, a main gas supply pipe 19 is arranged at one end of the nitrogen storage tank 2, a pressure reducing mechanism 3 is arranged inside the main gas supply pipe 19, a main valve 4 is arranged on one side of the pressure reducing mechanism 3, a branch gas supply pipe 9 is arranged at one end of the main gas supply pipe 19, a first partition valve 6 is arranged inside the branch gas supply pipe 9, a second partition valve 7 is arranged above the first partition valve 6, a third partition valve 8 is arranged above the second partition valve 7, a nitrogen nozzle 23 is arranged at one end of the branch gas supply pipe 9, an air locking ring 18 is arranged inside the coal silo main body 1, and an air locking, an air exchange ring 16 is arranged above the air exchange ring 17, a material level meter 12 is arranged on one side above the air exchange ring 16, a smoke sensor 13 is arranged on one side of the material level meter 12, and CH is arranged on one side of the smoke sensor 134The rear ends of the sensor 14 and the coal silo main body 1 are provided with stairs 25, one side of each stair 25 is provided with four maintenance platforms 22, and the rear ends of the four maintenance platforms 22 are provided with the elevators 21.
Further, a protective cover 24 is arranged on the outer wall of the nitrogen nozzle 23, and the protective cover 24 has high temperature resistance (up to 650 ℃), high wear resistance, high toughness, high crack resistance and higher impact and wear resistance, so that the service life of the nitrogen nozzle 23 is greatly prolonged, broken coal in a silo is prevented from possibly causing smashing loss of the nitrogen nozzle 23 of an inerting protection system in the blanking process, and blockage caused by the fact that the pulverized coal falls into a nitrogen injection pipeline is prevented.
Further, both sides of the elevator 21 are provided with maintenance elevators 20, and the maintenance elevators 20 are convenient for the maintenance and replacement of the detection instruments and the gas ring accessories of each gas ring layer on the maintenance platform 22.
Further, an inerting control box 5 is arranged on one side of the main valve 4, and the inerting control box 5 controls the opening and closing of the electromagnetic valves of each gas layer according to the received alarm level signals, so that the on-site manual control of the opening and closing of the common valve is supported.
Further, CH4 A CO sensor 15 is provided on one side of the sensor 14, and the CO sensor 15 is used to detect the carbon monoxide concentration.
Further, the nitrogen nozzle 23 is fixedly connected with the air exchanging ring 16, the inflating ring 17 and the air locking ring 18 respectively, and nitrogen is injected when alarm signals of different levels are received so as to perform different inerting protection functions.
The working principle is as follows: when in use, the feed inlet 11 is opened to inject the bulk coal into the silo, and the level indicator 12, the smoke sensor 13 and the CH are started in the process of bulk coal4The sensor 14 and the CO sensor 15 can monitor the coal height change, combustible gas composition, concentration change, smoke generation and other dangerous factors in the silo in real time, when the monitoring value exceeds a safety value, the inerting control box 5 can start different inerting protection functions according to alarm signals of different levels, and when the inerting system receives a primary starting signal (coal storage standing for several days) of the coal conveying program control system, the nitrogen is used for locking the coal outlet, so that air is prevented from permeating into a coal storage layer from the coal outlet, and the generation of an air duct effect is avoided; when the inerting system receives a medium-level starting signal (spontaneous combustion tendency and abnormality are found) of the coal conveying program control system, the nitrogen charging system automatically permeates high-purity nitrogen into the coal bed, so that the purposes of reducing the concentration of combustible gas and reducing combustion-supporting distance and the temperature of the coal bed are achieved; when the system detects a high-grade starting signal (after nitrogen is injected, spontaneous combustion continues to develop), the inerting system automatically starts to operate, the nearest gas exchange layer on the surface of the coal bed is opened by utilizing the function of the automatic tracking gas exchange column, inert gas is covered on the surface of the coal bed, the dangerous gas in the upper space of the coal bed in the silo is discharged from the top of the silo along with the gradual increase of the inert gas, the purpose of replacing the dangerous gas by the inert gas is achieved, the explosion-proof door is used for relieving the air pressure in the silo, when the internal pressure of the silo reaches a certain value, the explosion-proof door is automatically opened to prevent secondary explosion and protect normal operation of silo equipment, and the highThe arrangement of the stairs 25 and the overhaul elevator 20 is convenient for overhaul and replacement of detection instruments and gas ring accessories of each gas ring layer on the overhaul platform 22, the protective cover 24 is pre-embedded at the inner wall of the silo of each nitrogen nozzle 23, and the protective cover 24 has high temperature resistance (up to 650 ℃), high wear resistance, high toughness, high crack resistance and higher impact and wear resistance, so that the service life of the nitrogen nozzles 23 is greatly prolonged, the crushed coal in the silo is prevented from possibly causing smashing loss of the nitrogen nozzles 23 of the inerting protection system in the blanking process, and the blockage caused by falling into a nitrogen injection pipeline of the pulverized coal is prevented, the integral pipeline arrangement sequence of the inerting protection device is clear and concentrated, and is convenient for operation and overhaul.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a storage coal silo is with inerting protection device, includes storage coal silo main part (1), its characterized in that: the coal storage silo is characterized in that a pressure relief explosion door (10) is arranged above the coal storage silo main body (1), a feed inlet (11) is formed in one side of the pressure relief explosion door (10), a nitrogen storage tank (2) is arranged on one side of the coal storage silo main body (1), an air supply main pipe (19) is arranged at one end of the nitrogen storage tank (2), a pressure reducing mechanism (3) is arranged inside the air supply main pipe (19), a main valve (4) is arranged on one side of the pressure reducing mechanism (3), an air supply branch pipe (9) is arranged at one end of the air supply main pipe (19), a first partition valve (6) is arranged inside the air supply branch pipe (9), a second partition valve (7) is arranged above the first partition valve (6), and a third partition valve (8) is arranged above the second partition valve (7)) The coal storage silo is characterized in that one end of the gas supply branch pipe (9) is provided with a nitrogen nozzle (23), the inside of the coal storage silo main body (1) is provided with a gas locking ring (18), the top of the gas locking ring (18) is provided with a gas charging ring (17), the top of the gas charging ring (17) is provided with a gas exchange ring (16), one side of the top of the gas exchange ring (16) is provided with a material level meter (12), one side of the material level meter (12) is provided with a smoke sensor (13), and one side of the smoke sensor (13) is provided with a CH (CH)4The coal storage silo comprises a sensor (14), wherein a stair (25) is arranged at the rear end of the coal storage silo body (1), one side of the stair (25) is provided with an overhaul platform (22), four overhaul platforms (22) are arranged, and a lifter (21) is arranged at the rear end of each overhaul platform (22).
2. An inerting protection device for a coal storage silo as defined in claim 1, wherein: and a protective cover (24) is arranged on the outer wall of the nitrogen nozzle (23).
3. An inerting protection device for a coal storage silo as defined in claim 1, wherein: and maintenance elevators (20) are arranged on two sides of the elevator (21).
4. An inerting protection device for a coal storage silo as defined in claim 1, wherein: one side of the main valve (4) is provided with an inerting control box (5).
5. An inerting protection device for a coal storage silo as defined in claim 1, wherein: the CH4A CO sensor (15) is arranged on one side of the sensor (14).
6. An inerting protection device for a coal storage silo as defined in claim 1, wherein: the nitrogen nozzle (23) is respectively and fixedly connected with the air exchange ring (16), the inflation ring (17) and the air locking ring (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921552720.3U CN210762356U (en) | 2019-09-18 | 2019-09-18 | Inerting protection device for coal storage silo |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921552720.3U CN210762356U (en) | 2019-09-18 | 2019-09-18 | Inerting protection device for coal storage silo |
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| CN210762356U true CN210762356U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921552720.3U Active CN210762356U (en) | 2019-09-18 | 2019-09-18 | Inerting protection device for coal storage silo |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697308A (en) * | 2021-08-28 | 2021-11-26 | 徐州国晟智能科技有限公司 | Silo safety inerting protection device convenient for quick inflation |
| CN115282543A (en) * | 2022-08-03 | 2022-11-04 | 新疆天池能源有限责任公司 | Intelligent fire prevention and extinguishing system and method for coal storage silo |
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2019
- 2019-09-18 CN CN201921552720.3U patent/CN210762356U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697308A (en) * | 2021-08-28 | 2021-11-26 | 徐州国晟智能科技有限公司 | Silo safety inerting protection device convenient for quick inflation |
| CN113697308B (en) * | 2021-08-28 | 2022-08-12 | 徐州国晟智能科技有限公司 | Silo safety inerting protection device convenient for quick inflation |
| CN115282543A (en) * | 2022-08-03 | 2022-11-04 | 新疆天池能源有限责任公司 | Intelligent fire prevention and extinguishing system and method for coal storage silo |
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