CN111918507A - Safety protection method of fire alarm control system of power plant - Google Patents
Safety protection method of fire alarm control system of power plant Download PDFInfo
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- CN111918507A CN111918507A CN202010819853.3A CN202010819853A CN111918507A CN 111918507 A CN111918507 A CN 111918507A CN 202010819853 A CN202010819853 A CN 202010819853A CN 111918507 A CN111918507 A CN 111918507A
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- fire
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- junction box
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/12—Manually actuated calamity alarm transmitting arrangements emergency non-personal manually actuated alarm, activators, e.g. details of alarm push buttons mounted on an infrastructure
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/02—Arrangements of circuit components or wiring on supporting structure
Abstract
A safety protection method of a fire alarm control system of a power plant belongs to the technical field of power plant safety. The invention aims at solving the problem that the existing power plant adopts a water spraying mode to eliminate coal dust, so that on-site components and pipelines can break down to threaten safe production. The method comprises the following steps: in the coal conveying system, a protective cover is arranged for field components, and an equipment module is arranged in a module box; meanwhile, a junction box with a protection standard above IP55 is used as a junction box of a fire protection system circuit in the coal conveying system, and the fire protection system circuit is connected with the junction box through pipes and lines according to the explosion-proof grade requirement; and then, carrying out dustproof and waterproof sealing treatment on the joints between the communication line and the control line and the threading pipe, the junction box and the field components. The invention can effectively prevent coal dust from invading and corroding the fire-fighting alarm control system of the coal conveying system.
Description
Technical Field
The invention relates to a safety protection method of a fire alarm control system of a power plant, belonging to the technical field of power plant safety.
Background
The power generation of the thermal power plant takes coal as energy, fuel is provided for boiler combustion, and the boiler drives a steam turbine to operate, so that a generator is driven to output electric energy.
When the boiler operates and burns, coal stored in a coal yard is firstly crushed by a certain specification and then can be transported to the inlet of the boiler through a conveying belt. Each section of the conveying belt corresponds to one section of the coal conveying trestle. The coal yard, the transmission belt, the coal conveying trestle, various devices, facilities, a fuel monitoring center and the like in the coal conveying trestle form a coal conveying system of the power plant.
The conveyor belt is typically operated at a speed of 2.5 m/s when conveying coal to the boiler. This means that, in case of a fire, the transmission path can cause the fire to spread rapidly, which not only affects the safe production operation of the power plant, but also threatens the life of the plant staff and the property safety of the power plant. In accordance with relevant regulations and regulations regarding design and construction in the fire protection aspect of power plants, a fire alarm control system and a fire water system are generally installed in the area of a coal handling trestle. The fire alarm control system monitors field components of the coal conveying trestle, such as a linear temperature sensing cable, a manual alarm button, a fire hydrant button, various monitoring modules, an audible and visual alarm and the like through the fire alarm control host. The fire alarm control host and the monitoring facilities are communicated through a communication cable or a control cable, wherein the cable is laid on the wall, the shed roof or the floor of a site through a hot galvanized steel pipe and a junction box. Under normal conditions, the fire alarm control system can play a good monitoring and protecting role in the fire safety of the coal conveying system.
The construction requirements for the fire alarm control system include:
1. the threading pipe is a hot-dip galvanized steel pipe; 2. the linking device between the threading pipes is 86 boxes (the specification of a junction box), the threaded connecting ends of the threading pipes are inserted into 86 box connecting holes, and corresponding nuts are screwed for reinforcement; 3. the threading pipe is connected with fire alarm field components such as an audible and visual alarm, a manual alarm button and a fire hydrant alarm button through 86 boxes; 4. communication lines and control lines among all field components of the fire alarm control system and the fire alarm control host obtain basic safety protection through threading inside pipelines; 5. the protection level of the fire-fighting site components is implemented according to the specified standard, small-particle dust is prevented from invading, and water is not prevented.
During the actual operation of the coal conveying belt, the rapid transfer of the coal blocks and the pulverized coal causes the space of the whole coal conveying trestle to be filled with the pulverized coal. In order to ensure safe production, prevent safety accidents caused by explosion and ensure good working environment and life health and safety of field staff, coal dust is eliminated mainly by spraying water to the space of the coal conveying trestle at present. This method, however, is fatal to the safe use of field components and pipelines. This is because the accumulation of pulverized coal and the erosion of watering and the intercrossing effect thereof can lead to the large-area fault of field parts, the pipeline short circuit, the open circuit appear, even cause the fire alarm control system to paralyze so that can't normally operate, specifically:
1) a large amount of coal dust is generated in the operation process of the coal conveying system working section, the particle size is uniform, and the coal dust can invade and corrode field parts and pipelines, so that short circuit can be caused;
2) the water spraying and dust falling measures have great damage to field parts and pipelines of the fire-fighting alarm control system, and system faults are easily caused, so that the system is broken down.
The above-mentioned failure phenomenon is common in the current power plants. Because the hidden trouble of the failure cannot be eliminated, the existing problems cannot be solved at all even though the fire fighting device is frequently replaced. Because coal dust cannot be effectively protected, on one hand, great threat is generated to the fire safety operation of a power plant; on the other hand, the frequent safety failures cause great economic losses to the power plant.
Disclosure of Invention
The invention provides a safety protection method of a fire-fighting alarm control system of a power plant, aiming at the problem that field components and pipelines can break down to threaten safe production due to the fact that coal dust is eliminated by adopting a water spraying mode in the existing power plant.
The invention discloses a safety protection method of a fire alarm control system of a power plant, which comprises the following steps:
in the coal conveying system, a protective cover is arranged for field components, and an equipment module is arranged in a module box;
meanwhile, a junction box with a protection standard above IP55 is used as a junction box of a fire protection system circuit in the coal conveying system, and the fire protection system circuit is connected with the junction box through pipes and lines according to the explosion-proof grade requirement;
and then, carrying out dustproof and waterproof sealing treatment on the joints between the communication line and the control line and the threading pipe, the junction box and the field components.
According to the safety protection method of the fire alarm control system of the power plant, the field components comprise a manual alarm button, a fire hydrant alarm button and an audible and visual alarm.
According to the safety protection method of the fire alarm control system of the power plant, the equipment module comprises a monitoring module, a control module and a signal processing unit of a linear temperature sensing cable.
According to the safety protection method of the power plant fire alarm control system, the sealing treatment comprises the step of sealing treatment by adopting fireproof sealant.
The invention has the beneficial effects that: the method can ensure that the fire alarm control system of the whole coal conveying system is well protected, and effectively prevent the invasion and corrosion of coal dust, thereby ensuring the safe use of field parts and pipelines and reducing the occurrence of faults. The invention can greatly improve the reliability and the operation stability of the fire-fighting alarm control system of the coal conveying system by protecting the equipment, so that the corresponding facilities of the power plant meet the requirements and standards of fire-fighting regulations, and the fire-fighting alarm control host can really play a role in monitoring the fire-fighting of the coal conveying system area.
Drawings
FIG. 1 is a flow chart of a safety protection method of a fire alarm control system of a power plant according to the present invention;
FIG. 2 is a schematic diagram of a coal handling system of a thermal power plant;
fig. 3 is a diagram of an automatic alarm system of the coal conveying system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
In a first embodiment, referring to fig. 1 to 3, the present invention provides a safety protection method for a fire alarm control system of a power plant, including:
in the coal conveying system, a protective cover is arranged for field components, and an equipment module is arranged in a module box;
meanwhile, a junction box with a protection standard above IP55 is used as a junction box of a fire protection system circuit in the coal conveying system, and the fire protection system circuit is connected with the junction box through pipes and lines according to the explosion-proof grade requirement;
and then, carrying out dustproof and waterproof sealing treatment on the joints between the communication line and the control line and the threading pipe, the junction box and the field components.
The embodiment is suitable for a thermal power plant and is also suitable for other types of power plants. The fire-fighting safety protection system aims at the actual operation working condition of a coal conveying system of a power plant and carries out fire-fighting safety protection for enabling the fire-fighting automatic alarm control system to normally operate for a long time.
In the embodiment, the protective cover and the module box are both protective measures with the grade reaching the protective standard above IP 55. And rearranging the existing equipment modules arranged in the original module box to the module box with the new protection level. Meanwhile, the original junction box is replaced by the junction box with the protection standard above IP 55. In addition, after the communication line and the control line are calibrated to be normally communicated and work, corresponding sealing treatment is carried out.
By implementing the protection measures, the fire alarm control system of the coal conveying system can be effectively protected, and the safety production of a power plant is promoted.
The threading pipe comprises a hot-dip galvanized steel pipe, is sleeved on the outer surfaces of the communication line and the control line and is used for safety protection.
By way of example, the field components include a manual alarm button, a fire hydrant alarm button, and an audible and visual alarm.
When the conventional 86 junction box is used for protecting a manual alarm button, the mode of direct installation and screw fixation is adopted. The manual alarm button is exposed outside in the mode, coal dust and water can enter the manual alarm button under the actual working condition by directly facing water spray and dust, so that faults or false fire alarms are caused, and the operation of a fire alarm host of the coal conveying system is influenced and interfered.
When the junction box with the protection standard above IP55 is used for protecting the manual alarm button, after wiring and fixing are completed, a layer of refractory sealant can be uniformly coated on the outer edge of the junction box and the protection cover. And the cover plate of the protective cover can be provided with a sealing rubber strip, the cover plate can be freely turned up and down without influencing the operation after alarming, the lower end of the closed cover plate is provided with a manual locking device, the cover plate is pressed by lifting up, and the cover plate is opened by pushing down. After the protection measures are taken, the normal operation of the equipment can be ensured in the face of various severe environments such as dust fall, rain, water flushing, coal dust and the like.
As an example, the equipment module includes a monitoring module, a control module and a signal processing unit of a linear temperature sensing cable. The control module comprises an input/output module which can be used for inputting or outputting electric signals.
The existing module box body is provided with a wire inlet hole and is connected with a threading steel pipe through a metal box or a metal hose. Because the chamber door gap is great, inlet wire department tightness is not enough, can not waterproof dustproof, under the operating condition environment, the module of installation in the case can be caused to break down with the watering by the dust that gets into.
The module box used in the invention can be made of stainless steel with the protection grade of IP55 or above. The module box can be internally provided with a waterproof groove, and when a small amount of water enters the box, the water can flow out along the waterproof groove; dustproof sealing strips can be pasted at the opening and closing positions of the box door and the box body, the box body can adopt a lower end wire inlet mode, wire inlet holes are reserved, the metal hose is used for connecting the threading steel pipe and the box body, and the two ends of the box body are fixed through cable waterproof connectors. After the module box is installed, a layer of fire-resistant sealant can be uniformly coated on the positions where gaps possibly exist, such as the reserved inlet wire hole, the threading steel pipe joint and the like, so that the integral protection measure of sealing the box body and the line is achieved. After the invention is transformed, the module box can protect the modules and other field parts in the module box to normally operate under the actual working condition.
Further, the sealing treatment comprises the step of sealing treatment by adopting fireproof sealant.
The method of the invention does not need to change the working condition environment of the coal conveying system of the current power plant, but can effectively avoid the harm of severe environment to the field components, lines, pipes and connecting pieces of the fire alarm control system caused by the protection method and low level, and can improve the Mean Time Between Failures (MTBF) of the fire alarm control system in the fuel area by one order of magnitude.
The fire alarm control system is a complex distributed control system, the reliability of the fire alarm control system is analyzed from the function, the structure of the system can be simplified, and the system is analyzed according to the hardware classification of the system: the system improved by the method is analyzed by the fact that five parts, namely a threading pipe, a communication control line, a fire-fighting field part, a fireproof sealant, a field pipeline junction box and the like, are understood as a series system from the aspect of protection, and if the effective service life of each part is considered as Mean Time Between Failure (MTBF), the effective service life of the fireproof sealant can be as long as 25 years. The effective service life of the field components of the fire alarm control system is more than 30 years, the effective service life cycle of the metal junction boxes, wires and the like in the rest parts is longer, and the effective service life is calculated according to 30 years for convenience.
Setting the Mean Time Between Failures (MTBF) and the failure rate lambda of a system of a fire alarm control system of a coal conveying system;
the mean time between failures of the system of the fire-fighting field component is MTBF1, and the failure rate is lambda 1;
the mean time between failures of the fire pipeline junction box is MTBF2, and the failure rate is lambda 2;
the mean time between failures of the communication control line is MTBF3, and the failure rate is lambda 3;
the mean time between failures of the threading pipes is MTBF4, and the failure rate is lambda 4;
the mean time between failure of the fire-retardant sealant is MTBF5, the failure rate is λ 5;
displaying according to the existing data:
the MTBF1 is more than or equal to 30 years, calculated according to 30 years, namely that the MTBF1 is 30 years and 262800 hours;
λ1＝1/MTBF1＝0.0000038；
the MTBF2 is more than or equal to 30 years, calculated according to 30 years, namely that the MTBF2 is 30 years and 262800 hours;
λ2＝1/MTBF2＝0.0000038；
the MTBF3 is more than or equal to 30 years, calculated according to 30 years, namely that the MTBF3 is 30 years and 262800 hours;
λ3＝1/MTBF3＝0.0000038；
the MTBF4 is more than or equal to 30 years, calculated according to 30 years, namely that the MTBF4 is 30 years and 262800 hours;
λ4＝1/MTBF4＝0.0000038；
the MTBF5 is more than or equal to 25 years, calculated according to 25 years, namely that the MTBF5 is 30 years and 219000 hours;
λ5＝1/MTBF5＝0.0000045；
λ 1+ λ 2+ λ 3+ λ 4+ λ 5 is 0.0000197;
therefore, the Mean Time Between Failures (MTBF) of the fire alarm control system of the coal conveying system is as follows:
MTBF 1/λ 50761 hr 5.7 years; i.e., the Mean Time Between Failure (MTBF) of the constructed system can reach 5.7 years.
Even when the effective service life of the fire-resistant sealant is calculated according to the most unfavorable product for 25 years:
let λ 1 ═ λ 2 ═ λ 3 ═ λ 4 ═ λ 5 ═ 0.0000045,
λ 1+ λ 2+ λ 3+ λ 4+ λ 5-5 × λ 5-0.0000225;
MTBF 1/λ 44444 h 5.07 years; i.e., the Mean Time Between Failure (MTBF) of the system can also exceed 5 years.
Compared with the Mean Time Between Failures (MTBF) of the original power plant system for less than 30 days (0.082 year), the Mean Time Between Failures (MTBF) of the original power plant system is improved by 61 times, and the effect is very obvious.
Through the analysis, the method has obvious effect of improving the operation condition of the fire alarm control system of the coal conveying system, and the improved fire system is worth depending on. The method of the invention can not only anticipate the reliability and stable monitoring service period of the fire-fighting automatic alarm control system of the coal conveying system, but also play a positive role in ensuring the fire-fighting safe operation of the coal conveying system of the power plant.
Experiments prove that the method can ensure the long-term stable and reliable operation of the fire alarm control system, can powerfully ensure the safe production operation of the power plant during the heating period in winter, and has great popularization value in places such as thermal power plants and the like.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (4)
1. A safety protection method of a fire alarm control system of a power plant is characterized by comprising the following steps:
in the coal conveying system, a protective cover is arranged for field components, and an equipment module is arranged in a module box;
meanwhile, a junction box with a protection standard above IP55 is used as a junction box of a fire protection system circuit in the coal conveying system, and the fire protection system circuit is connected with the junction box through pipes and lines according to the explosion-proof grade requirement;
and then, carrying out dustproof and waterproof sealing treatment on the joints between the communication line and the control line and the threading pipe, the junction box and the field components.
2. The safety protection method for the fire alarm control system of the power plant according to claim 1,
the field component comprises a manual alarm button, a fire hydrant alarm button and an audible and visual alarm.
3. The safety protection method for the fire alarm control system of the power plant according to claim 1,
the equipment module comprises a monitoring module, a control module and a signal processing unit of a linear temperature sensing cable.
4. The safety protection method for the fire alarm control system of the power plant according to claim 1,
the sealing treatment comprises the step of sealing treatment by adopting fireproof sealant.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101779339A (en) * | 2007-08-10 | 2010-07-14 | 泰科电子Amp有限责任公司 | Electrical connection system for photovoltaic solar installations |
| CN201985501U (en) * | 2011-02-28 | 2011-09-21 | 无锡市华星电力阻燃材料有限公司 | Fire-resistant anti-explosion seal box for cable joints |
| US20140369334A1 (en) * | 2013-06-07 | 2014-12-18 | Strata Products Worldwide, Llc | Method and Apparatus for Protecting a Miner |
| CN204068120U (en) * | 2014-07-02 | 2014-12-31 | 广州日立压缩机有限公司 | The electrical wiring box device of compressor high-protection level |
| CN104931144A (en) * | 2015-02-06 | 2015-09-23 | 东南大学 | Coal-fired power plant coal conveyor belt temperature remote monitoring system |
| CN106438509A (en) * | 2016-10-21 | 2017-02-22 | 苏州英德尔室内空气技术有限公司 | Explosion-proof FFU fan filter unit |
| CN207152912U (en) * | 2017-08-09 | 2018-03-30 | 上海电气燃气轮机有限公司 | The safety-type total flood fire-fighting system of case of restriking based on polynary feedback mechanism |
| CN108022398A (en) * | 2016-11-04 | 2018-05-11 | 西安盛赛尔电子有限公司 | A kind of fire alarm system communication means |
| CN208092534U (en) * | 2018-08-29 | 2018-11-13 | 国电龙源电力技术工程有限责任公司 | A kind of coal yard equipment integral control system |
| CN109459997A (en) * | 2018-12-28 | 2019-03-12 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of fire-proof and explosion-proof purge system of combined power generation factory and control method |
| CN209016496U (en) * | 2018-10-26 | 2019-06-21 | 池州市东聚新能源科技有限公司 | A kind of electric control box |
| CN209329496U (en) * | 2018-10-17 | 2019-08-30 | 湖南天一电气有限公司 | A kind of underground coal mine direct current cabinet explosion-resistant enclosure |
| CN209912103U (en) * | 2019-03-18 | 2020-01-07 | 中化（舟山）兴海建设有限公司 | Integrated explosion-proof fire manual operation alarm device |
| CN210377746U (en) * | 2019-11-13 | 2020-04-21 | 济南祥控自动化设备有限公司 | Intelligent main control device for coal yard site |
-
2020
- 2020-08-14 CN CN202010819853.3A patent/CN111918507A/en not_active Withdrawn
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101779339A (en) * | 2007-08-10 | 2010-07-14 | 泰科电子Amp有限责任公司 | Electrical connection system for photovoltaic solar installations |
| CN201985501U (en) * | 2011-02-28 | 2011-09-21 | 无锡市华星电力阻燃材料有限公司 | Fire-resistant anti-explosion seal box for cable joints |
| US20140369334A1 (en) * | 2013-06-07 | 2014-12-18 | Strata Products Worldwide, Llc | Method and Apparatus for Protecting a Miner |
| CN204068120U (en) * | 2014-07-02 | 2014-12-31 | 广州日立压缩机有限公司 | The electrical wiring box device of compressor high-protection level |
| CN104931144A (en) * | 2015-02-06 | 2015-09-23 | 东南大学 | Coal-fired power plant coal conveyor belt temperature remote monitoring system |
| CN106438509A (en) * | 2016-10-21 | 2017-02-22 | 苏州英德尔室内空气技术有限公司 | Explosion-proof FFU fan filter unit |
| CN108022398A (en) * | 2016-11-04 | 2018-05-11 | 西安盛赛尔电子有限公司 | A kind of fire alarm system communication means |
| CN207152912U (en) * | 2017-08-09 | 2018-03-30 | 上海电气燃气轮机有限公司 | The safety-type total flood fire-fighting system of case of restriking based on polynary feedback mechanism |
| CN208092534U (en) * | 2018-08-29 | 2018-11-13 | 国电龙源电力技术工程有限责任公司 | A kind of coal yard equipment integral control system |
| CN209329496U (en) * | 2018-10-17 | 2019-08-30 | 湖南天一电气有限公司 | A kind of underground coal mine direct current cabinet explosion-resistant enclosure |
| CN209016496U (en) * | 2018-10-26 | 2019-06-21 | 池州市东聚新能源科技有限公司 | A kind of electric control box |
| CN109459997A (en) * | 2018-12-28 | 2019-03-12 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of fire-proof and explosion-proof purge system of combined power generation factory and control method |
| CN209912103U (en) * | 2019-03-18 | 2020-01-07 | 中化（舟山）兴海建设有限公司 | Integrated explosion-proof fire manual operation alarm device |
| CN210377746U (en) * | 2019-11-13 | 2020-04-21 | 济南祥控自动化设备有限公司 | Intelligent main control device for coal yard site |
Non-Patent Citations (2)
| Title |
|---|
| 刘凯，翁立坚等: "火灾自动报警系统在火力发电厂的应用问题及解决方法", 《2006（沈阳）国际安全科学与技术学术研讨会》 * |
| 徐练军: "火力发电厂火灾自动报警系统的防尘、防水设计", 《城市建设理论研究（电子版）》 * |
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Application publication date: 20201110 |
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