CN203268820U - Low-pressure carbon dioxide inerting protection device for closed coal storage bunker - Google Patents
Low-pressure carbon dioxide inerting protection device for closed coal storage bunker Download PDFInfo
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- CN203268820U CN203268820U CN 201220745616 CN201220745616U CN203268820U CN 203268820 U CN203268820 U CN 203268820U CN 201220745616 CN201220745616 CN 201220745616 CN 201220745616 U CN201220745616 U CN 201220745616U CN 203268820 U CN203268820 U CN 203268820U
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- carbon dioxide
- inerting
- low
- pressure carbon
- system controller
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Abstract
The utility model discloses a low-pressure carbon dioxide inerting protection device for a closed coal storage bunker and relates to low-pressure carbon dioxide inerting protection devices for closed coal storage bunkers. The low-pressure carbon dioxide inerting protection device is provided with a low-pressure carbon dioxide storage device placed on a weighing device, wherein the low-pressure carbon dioxide storage device is sequentially connected with a total control valve, a full relief device, a bypass valve, an air temperature type gasifier, a pressure regulating and flow limiting device, partition selection valves and inerting spray heads through a pipeline, the total control valve and the partition selection valves are controlled by an inerting system controller, and the inerting system controller is further used for receiving work state signals of the partition selection valves and signals of an alarm system controller and various detection signals. The low-pressure carbon dioxide inerting protection device has the beneficial effects that through the monitoring of the alarm system controller and various detection devices, the startup/shutdown of the inerting system controller is automatically realized, the protection on the closed coal storage bunker is realized, and the smoldering, spontaneous combustion and deflagration of the closed coal storage bunker are prevented; and meanwhile, the air temperature type gasifier is successfully applied to a system, so that the reliability of the system is improved, the service life of equipment is prolonged, and the system cost is reduced greatly.
Description
Technical field
The utility model relates to sealing coal store safety system; a kind of sealing coal store low pressure CO 2 inertia protection device specifically; low pressure CO 2 used is the dry low pressure CO 2 by air-heating type gasifier at present, than nitrogen, preceence is arranged more in use.
Background technology
The sealing coal store is a kind of for storage and can conveniently draw off the large-scale plant of loose unpacked material, is also that the power plant is used for storing the principal facility of raw coal in recent years.The raw coal cylinder is the flat-top cone end cylindrical structure that ferro-concrete is built, and volume reaches tens thousand of M3, and its inner structure is according to amount of capacity difference slightly.Sealing coal store top is provided with ring type coal-distributing machine cloth coal, and the bottom is provided with annular coal unloading machine and produces coal, and is provided with dust exhaustor and prevents flour dust overflow in silo, belongs to a kind of container of relative closure.The spontaneous combustion of raw coal is not to be all to occur simultaneously in the sealing coal store, but possesses certain a bit at first generation of autoignition conditions in the part, and when and where is very uncertain, finally just causes to be large-area spontaneous combustion and detonation.
Summary of the invention
For overcoming the above-mentioned deficiency of prior art, the utility model provides a kind of sealing coal store low pressure CO 2 to protect and puts, and stops by be filled with the unreactable gas carbon dioxide to the sealing coal store that its raw coal glows, spontaneous combustion and detonation.The utility model is realized with following technical scheme: a kind of sealing coal store low pressure CO 2 inertia protection device; it is characterized in that: the sensor setting of weighting apparatus is under storage tank; by transferring to the weight that demonstrates carbon dioxide in storage tank on the inerting system controller, its range is determined according to the size of basin.
Principle of work: when the sealing temperature of coal store or CO (carbon monoxide converter) concentration surpass predefined value, warning receives alerting signal and begins to report to the police, and to the signal of inerting system controller output open system, the inerting system controller is opened master control valve and subregion selector valve immediately, and automatically starts gasifier work; The quantity regulating flow that the pressure regulation current-limiting apparatus is opened according to the subregion selector valve, this moment, system began to pass through the inerting nozzle release of carbon dioxide to the sealing coal store of zone of alarm.After system began to spurt, positioner passed the signal to the inerting system controller, by the inerting system controller to spurt the zone the venting indicator lamp send signal, the venting indicator lamp glittering and the caution.When temperature or carbon-monoxide concentration during lower than setting value, the warning controller sends the signal that stops spurting to the inerting system controller, and the inerting system controller cuts out the master control valve immediately, and delays time and closed the subregion selector valve in 10 minutes.The combined aural and visual alarm of guard plot and venting indicator lamp need carry out resetting after manual confirmation.This moment, system was in set condition again, waited for alerting signal for the second time.Whole automatically actuated process also can be carried out M/C on the guidance panel of inerting system controller.
Beneficial effect is: by the monitoring of warning controller and detecting devices, realize that automatically the inerting system controller opens and closes, thereby realize the sealing coal store is protected, stop that the sealing coal store glows, spontaneous combustion, detonation occur.Air-heating type gasifier successful Application in native system has simultaneously more increased the reliability of system, has increased the life-span of equipment, has greatly saved the cost of system, has more promotional value.
Description of drawings
Fig. 1 is the utility model mounting arrangement figure;
Fig. 2 is the utility model electrical control schematic diagram;
In Fig. 1: 1, memory storage, 2, the master control valve, 3, safety valve, 4, bypass disc, 5, bypass disc, 6, compression indicator, 7, the inerting system controller, 8, air-heating type gasifier, 9, regulator, 10, current-limiting apparatus, 11, the subregion selector valve, 12, ball valve, 13, inerting nozzle
In Fig. 2: 1, memory storage, 2, the master control valve, 3, safety relief device, 4, bypass disc, 5, compression indicator, 6, air-heating type gasifier, 7, the pressure regulation throttling device, 8, subregion selector valve, 9, positioner, 10, inerting nozzle, 11, temperature detection device, 12, carbon-monoxide concentration detector, 13, the inerting system controller.
The specific embodiment
As shown in Figure 1, when the temperature of sealing coal store or carbonic oxide alarming, inerting control system controller plc will be opened master control valve and subregion selector valve (valve of zone of alarm), liquid carbon dioxide will flow into air-heating type gasifier from carbon dioxide storage tank and make its gasification, be filled with the sealing coal store by the pressure regulation current-limiting apparatus, stop coal spontaneous combustion, glow, detonation.
As shown in Figure 1, the sensor of weighting apparatus is set under storage tank, demonstrates the weight of carbon dioxide in storage tank by transmission on the inerting system controller.Ensure coal bunker glow, spontaneous combustion, the needs of amount of carbon dioxide when detonation occurs.
As shown in Figure 1, a master control valve is set after carbon dioxide storage tank, the master control valve is realized opening for a long time when valve event, and can be at the complete rear valve of closing rapidly of action.Control liquid CO 2 and enter air-heating type gasifier.
As shown in Figure 1, an air-heating type gasifier is set after the master control valve, it can be vaporizated into carbon dioxide the device of gaseous state by liquid state, and its operation is the device of liquid carbon dioxide vaporization by air latent heat.
In the air-heating type gasifier back, the pressure regulation current-limiting apparatus is set, it can be according to the size of different system, and by the correction of hydromechanical theory and actual tests, the pressure regulation throttling device of manufacturing is to satisfy the requirement of system's carbon dioxide flow and pressure.
As shown in Figure 1, in the air-heating type gasifier back, the subregion selector valve is set, it is the control cock of leading to each guard plot, guarantees this guard plot when abnormal condition occurring, can accurately be filled with low pressure CO 2 to this district.
As shown in Figure 1, the flow feedback signal is set after the subregion selector valve, guarantees that gas is filled with this guard plot.
As shown in Figure 1, configuration fire gases and toxic gas detector in the sealing coal store, detector signal imports inerting control system controller into.When glow, the generation of spontaneous combustion, detonation, report to the police for the inerting system controller, start native system.
As shown in Figure 1; on the conical surface of sealing coal store bottom and each set temperature detector of middle part; be limited to 70 ℃ on alarm temperature; the temperature alarming upper limit is adjustable; signal imports inerting control system controller into; when glow, the generation of spontaneous combustion, detonation, carbon dioxide inertia protection device controller is reported to the police, and starts native system.
Claims (1)
1. sealing coal store low pressure CO 2 inertia protection device; it is characterized in that: the sensor setting of weighting apparatus is under storage tank; by transferring to the weight that demonstrates carbon dioxide in storage tank on the inerting system controller, its range is determined according to the size of basin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220745616 CN203268820U (en) | 2012-12-26 | 2012-12-26 | Low-pressure carbon dioxide inerting protection device for closed coal storage bunker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220745616 CN203268820U (en) | 2012-12-26 | 2012-12-26 | Low-pressure carbon dioxide inerting protection device for closed coal storage bunker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203268820U true CN203268820U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220745616 Expired - Fee Related CN203268820U (en) | 2012-12-26 | 2012-12-26 | Low-pressure carbon dioxide inerting protection device for closed coal storage bunker |
Country Status (1)
| Country | Link |
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| CN (1) | CN203268820U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108238383A (en) * | 2018-03-29 | 2018-07-03 | 大唐环境产业集团股份有限公司 | A kind of coal store low pressure CO2Local inerting guard method |
| CN108489546A (en) * | 2018-03-29 | 2018-09-04 | 大唐环境产业集团股份有限公司 | A kind of coal store monitoring system |
| CN108562329A (en) * | 2018-03-29 | 2018-09-21 | 大唐环境产业集团股份有限公司 | A kind of coal store all-around protection system |
-
2012
- 2012-12-26 CN CN 201220745616 patent/CN203268820U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108238383A (en) * | 2018-03-29 | 2018-07-03 | 大唐环境产业集团股份有限公司 | A kind of coal store low pressure CO2Local inerting guard method |
| CN108489546A (en) * | 2018-03-29 | 2018-09-04 | 大唐环境产业集团股份有限公司 | A kind of coal store monitoring system |
| CN108562329A (en) * | 2018-03-29 | 2018-09-21 | 大唐环境产业集团股份有限公司 | A kind of coal store all-around protection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20141226 |
|
| EXPY | Termination of patent right or utility model |