WO2023202630A1 - 一种火电厂锅炉火焰探测器电源分配优化装置 - Google Patents

一种火电厂锅炉火焰探测器电源分配优化装置 Download PDF

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Publication number
WO2023202630A1
WO2023202630A1 PCT/CN2023/089268 CN2023089268W WO2023202630A1 WO 2023202630 A1 WO2023202630 A1 WO 2023202630A1 CN 2023089268 W CN2023089268 W CN 2023089268W WO 2023202630 A1 WO2023202630 A1 WO 2023202630A1
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Prior art keywords
power supply
flame detector
factory
detector power
redundant diode
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PCT/CN2023/089268
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English (en)
French (fr)
Inventor
张智远
李耀亮
潘喜良
李雷
戴海鹏
石敦义
王冰礁
汤凌晓
詹修平
李腾旭
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华能罗源发电有限责任公司
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Application filed by 华能罗源发电有限责任公司 filed Critical 华能罗源发电有限责任公司
Priority to JP2023600118U priority Critical patent/JP3246542U/ja
Publication of WO2023202630A1 publication Critical patent/WO2023202630A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M11/00—Safety arrangements
    • F23M11/04—Means for supervising combustion, e.g. windows
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J11/00—Circuit arrangements for providing service supply to auxiliaries of stations in which electric power is generated, distributed or converted
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems

Definitions

  • the utility model relates to a power distribution optimization device for a flame detector in a thermal power plant boiler, belonging to the technical field of furnace safety monitoring.
  • the flame detector is the front-end equipment of the furnace safety monitoring system. Whether the signal it provides is accurate or not plays a decisive role in the normal operation of the furnace safety monitoring system.
  • the boiler flame detector is also an important indicator for judging the combustion situation of the furnace. It provides an important basis for whether the boiler is ignited and burned normally and the strength of the flame. It can detect the combustion situation of the furnace timely and reliably. Therefore, the normal operation of the flame detector is particularly important.
  • the power supply of the boiler flame detector power distribution cabinet is separately powered by two power supplies: the factory power supply (1K) in the boiler electronics room and the factory power supply (21K) in the boiler electronics room. It is output to the local flame detector through the power switching device in the on-site power supply cabinet. .
  • the flame detectors at the four corners of each coal seam are powered by the 24V power output from the power switching device in the on-site power distribution cabinet. If the power distribution cabinet loses power or the power switching device in the cabinet fails and is damaged, it will cause the flame detectors of all coal seams to lose power and trigger the boiler MFT. Therefore, improvements are urgently needed.
  • the utility model designs a power distribution optimization device for a flame detector in a thermal power plant boiler, which can effectively reduce the risk of power loss of the flame detector and ensure that its power supply operates stably and reliably.
  • a thermal power plant boiler flame detector power distribution optimization device including flame detector power supply one, flame detector power supply two, flame detector power supply three and flame detector power supply four set up in each coal seam, and also includes factory-use peripherals Power supply one, factory power supply two, factory power supply three, factory power supply four, redundant diode one and redundant diode two; factory power supply one and factory power supply two are connected to the redundant diode after being connected to two power conversion devices respectively.
  • One connection, and the redundant diode one is connected to the flame detector power supply one and the flame detector power supply four respectively; the factory power supply three and the factory power supply four are respectively connected to two power conversion devices and both are connected to the redundant diode two, and the redundant diode two is connected.
  • the remaining diode two is connected to the flame detector power supply two and the flame detector power supply three respectively.
  • the flame detector power supply one, the flame detector power supply two, the flame detector power supply three and the flame detector power supply four are rectangular and are sequentially arranged in the four corners of the coal seam in a clockwise direction.
  • both the first output terminal of the redundant diode and the second output terminal of the redundant diode are connected to a power failure alarm device.
  • factory power supply one is a 1k power supply
  • factory power supply two is a 21k power supply
  • factory power supply three is a 2k power supply
  • factory power supply four is a 22k power supply.
  • this utility model has the following characteristics and beneficial effects:
  • the flame detector power supply 4 provides decentralized power supply to ensure the stable and reliable operation of each flame detector power supply, thereby ensuring the safe and stable operation of the unit.
  • the power loss alarm device when a certain power supply loses power, the power loss alarm device generates Respond to and transmit the power failure alarm signal to the centralized control room DCS.
  • the DCS screen in the centralized control room will receive the power failure alarm signal.
  • the redundant diodes have higher reliability and faster response, and realize redundancy of two power supplies, making the power supply disturbance-free. switch.
  • Figure 1 is a schematic connection diagram of the flame detector power supply 1 and the flame detector power supply 4 of the present invention
  • FIG. 2 is a schematic connection diagram of the flame detector power supply 2 and the flame detector power supply 3 of the present invention
  • Figure 3 is a schematic diagram of the layout of each flame detector power supply of the utility model
  • Figure 4 is a circuit connection diagram of flame detector power supply one and flame detector power supply four, as well as a contact wiring diagram of the power failure alarm device;
  • Figure 5 is a circuit connection diagram of the flame detector power supply 2 and the flame detector power supply 3, as well as a contact wiring diagram of the power failure alarm device.
  • the reference numbers are: 1. Factory power supply one; 2. Factory power supply two; 3. Factory power supply three; 4. Factory power supply four; 5. Power conversion device; 6. Redundant diode one; 7. Failure Electric alarm device; 8. Flame detector power supply one; 9. Flame detector power supply two; 10. Flame detector power supply three; 11. Flame detector power supply four; 12. Redundant diode two.
  • the thermal power plant boiler flame detector power distribution optimization device of this embodiment includes a flame detector power supply 8, a flame detector power supply 2 9, a flame detector power supply 3 10 and 10 arranged in each coal seam.
  • Flame detector power supply four 11, also includes peripheral factory power supply one 1, factory power supply two 2, factory power supply three 3, factory power supply four 4, redundant diode one 6 and redundant diode two 12;
  • factory use Power supply one 1 and factory power supply two 2 are respectively connected to two power conversion devices 5 and then both are connected to redundant diode one 6, and redundant diode one 6 is connected to flame detector power supply one 8 and flame detector power supply four 11 respectively;
  • Factory power supply three 3 and factory power supply four 4 are respectively connected to two power conversion devices 5 and then both are connected to redundant diode two 12, and redundant diode two 12 is connected to flame detector power supply two 9 and flame detector power supply three 10 respectively. connect.
  • the flame detector power supply one 8, the flame detector power supply two 9, the flame detector power supply three 10 and the flame detector power supply four 11 are rectangular and are arranged in the four corners of the coal seam in a clockwise direction.
  • factory power supply one 1 is the power supply numbered 1k
  • factory power supply two 2 is the power supply numbered 21k
  • factory power supply three 3 is the power supply numbered 2k
  • factory power supply four 4 is the power supply numbered 22k .
  • the working principle of the utility model by setting the factory power supply one 1, the factory power supply two 2, the factory power supply three 3 and the factory power supply four 4, the flame detector power supplies one 8 and 8 respectively installed at the four corners of the coal seam are supplied.
  • Flame detector power supply 29, flame detector power supply 310 and flame detector power supply 411 provide decentralized power supply to ensure the stable and reliable operation of each flame detector power supply, thereby ensuring the safe and stable operation of the unit.
  • an external power failure alarm is provided Device 7.
  • the power loss alarm device 7 responds and transmits the power loss alarm signal to the centralized control room DCS.
  • the DCS screen in the centralized control room will receive the power loss alarm signal, and the maintenance personnel can discover the existence of the power supply in advance.
  • redundant diodes avoids the short-term power loss due to mechanical characteristics of traditional power switching devices during power switching.
  • the redundant diodes are more reliable and more responsive. It is fast and realizes redundancy of two power supplies, allowing power supplies to switch without interruption.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral connection; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral connection; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

一种火电厂锅炉火焰探测器电源分配优化装置，属于炉膛安全监控技术领域，包括设置在各个煤层的火焰探测器电源一（8）、火焰探测器电源二（9）、火焰探测器电源三（10）和火焰探测器电源四（11），还包括外设的厂用电源一（1）、厂用电源二（2）、厂用电源三（3）、厂用电源四（4）、冗余二极管一（6）和冗余二极管二（12）；厂用电源一（1）和厂用电源二（2）分别连接两个电源转换装置后均与冗余二极管一（6）连接，且冗余二极管一（6）分别与火焰探测器电源一（8）和火焰探测器电源四（11）连接；厂用电源三（3）和厂用电源四（4）分别连接两个电源转换装置后均与冗余二极管二（12）连接，且冗余二极管二（12）分别与火焰探测器电源二（9）和火焰探测器电源三（10）连接。电源分配优化装置可以有效降低火焰探测器失电的风险，保证其电源稳定、可靠地工作。

Description

一种火电厂锅炉火焰探测器电源分配优化装置 技术领域
本实用新型涉及一种火电厂锅炉火焰探测器电源分配优化装置，属于炉膛安全监控技术领域。
 背景技术
火焰探测器是炉膛安全监控系统的前端设备，它提供的信号准确与否，对炉膛安全监控系统的正常运行起着决定性的作用。锅炉火焰探测器也是判断炉膛燃烧情况的一项重要指标，对锅炉是否正常点火燃烧以及火焰的强弱提供重要依据，可以及时、可靠地检测炉膛的燃烧情况。因此火焰探测器的正常运行显得尤为重要。
目前锅炉火焰探测器电源分配柜电源由锅炉电子间厂用电源（1K）和锅炉电子间厂用电源（21K）两路电源单独供电，经过现场电源柜内电源切换装置输出至就地火焰检测器。每个煤层的四个角的火焰检测器均由现场电源分配柜内电源切换装置输出24V电源供电。如果电源分配柜失电或者柜内电源切换装置故障损坏，将会导致所有煤层的火焰检测器失电，触发锅炉MFT，因此急需进行改进。
 实用新型
为了克服上述现有技术中的缺点，本实用新型设计了一种火电厂锅炉火焰探测器电源分配优化装置，其可以有效降低火焰探测器失电的风险，保证其电源稳定、可靠地工作。
为了实现上述目的，本实用新型采用如下技术方案：
一种火电厂锅炉火焰探测器电源分配优化装置，包括设置在各个煤层的火焰探测器电源一、火焰探测器电源二、火焰探测器电源三和火焰探测器电源四，还包括外设的厂用电源一、厂用电源二、厂用电源三、厂用电源四、冗余二极管一和冗余二极管二；厂用电源一和厂用电源二分别连接两个电源转换装置后均与冗余二极管一连接，且冗余二极管一分别与火焰探测器电源一和火焰探测器电源四连接；厂用电源三和厂用电源四分别连接两个电源转换装置后均与冗余二极管二连接，且冗余二极管二分别与火焰探测器电源二和火焰探测器电源三连接。
进一步地，火焰探测器电源一、火焰探测器电源二、火焰探测器电源三和火焰探测器电源四呈矩形且以顺时针方向依次设置在煤层的四个角落处。
进一步地，冗余二极管一输出端和冗余二极管二输出端均连接有失电报警装置。
进一步地，厂用电源一为1k电源，厂用电源二为21k电源，厂用电源三为2k电源，厂用电源四为22k电源。
与现有技术相比本实用新型有以下特点和有益效果：
通过设置厂用电源一、厂用电源二、厂用电源三和厂用电源四，向分别设置在煤层的四个角的火焰探测器电源一、火焰探测器电源二、火焰探测器电源三和火焰探测器电源四进行分散供电，保证了各火焰探测器电源稳定、可靠地工作，进而保证机组安全稳定运行，同时通过外接失电报警装置，当某一路电源失电时，失电报警装置产生响应并传输电源失电报警信号到集控室DCS，集控室DCS画面将接收到电源失电报警信号，检修人员提前发现电源存在的安全隐患，并及时处理，避免事故进一步扩大；冗余二极管的设置，避免了传统电源切换装置在电源切换时由于机械特性会存在的短暂失电的现象，冗余二极管可靠性更高、响应更加迅速，并且实现对两路电源进行冗余，使得电源实现无扰切换。
 附图说明
图1是本实用新型火焰探测器电源一和火焰探测器电源四的连接示意图；
图2是本实用新型火焰探测器电源二和火焰探测器电源三的连接示意图；
图3是本实用新型各火焰探测器电源的布置示意图；
图4是火焰探测器电源一和火焰探测器电源四电路连接图以及电源失电报警装置触点接线图；
图5是火焰探测器电源二和火焰探测器电源三电路连接图以及电源失电报警装置触点接线图。
其中附图标记为：1、厂用电源一；2、厂用电源二；3、厂用电源三；4、厂用电源四；5、电源转换装置；6、冗余二极管一；7、失电报警装置；8、火焰探测器电源一；9、火焰探测器电源二；10、火焰探测器电源三；11、火焰探测器电源四；12、冗余二极管二。
 实施方式
下面结合实施例对本实用新型进行更详细的描述。
如图1至5所示，本实施例的火电厂锅炉火焰探测器电源分配优化装置，包括设置在各个煤层的火焰探测器电源一8、火焰探测器电源二9、火焰探测器电源三10和火焰探测器电源四11，还包括外设的厂用电源一1、厂用电源二2、厂用电源三3、厂用电源四4、冗余二极管一6和冗余二极管二12；厂用电源一1和厂用电源二2分别连接两个电源转换装置5后均与冗余二极管一6连接，且冗余二极管一6分别与火焰探测器电源一8和火焰探测器电源四11连接；厂用电源三3和厂用电源四4分别连接两个电源转换装置5后均与冗余二极管二12连接，且冗余二极管二12分别与火焰探测器电源二9和火焰探测器电源三10连接。
进一步地，火焰探测器电源一8、火焰探测器电源二9、火焰探测器电源三10和火焰探测器电源四11呈矩形且以顺时针方向依次设置在煤层的四个角落处。
进一步地，冗余二极管一6输出端和冗余二极管二12输出端均连接有失电报警装置7。
进一步地，厂用电源一1为编号是1k的电源，厂用电源二2为编号是21k的电源，厂用电源三3为编号是2k的电源，厂用电源四4为编号是22k的电源。
本实用新型的工作原理：通过设置厂用电源一1、厂用电源二2、厂用电源三3和厂用电源四4，向分别设置在煤层的四个角的火焰探测器电源一8、火焰探测器电源二9、火焰探测器电源三10和火焰探测器电源四11进行分散供电，保证了各火焰探测器电源稳定、可靠地工作，进而保证机组安全稳定运行，同时通过外接失电报警装置7，当某一路电源失电时，失电报警装置7产生响应并传输电源失电报警信号到集控室DCS，集控室DCS画面将接收到电源失电报警信号，检修人员提前发现电源存在的安全隐患，并及时处理，避免事故进一步扩大；冗余二极管的设置，避免了传统电源切换装置在电源切换时由于机械特性会存在的短暂失电的现象，冗余二极管可靠性更高、响应更加迅速，并且实现对两路电源进行冗余，使得电源实现无扰切换。
在本实用新型的描述中，需要说明的是，术语“内”、“外”、“上”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。
在本实用新型的描述中，需要说明的是，除非另有明确的规定和限定，术语“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。
显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。

Claims (3)

  1. 一种火电厂锅炉火焰探测器电源分配优化装置，其特征在于：包括设置在各个煤层的火焰探测器电源一（8）、火焰探测器电源二（9）、火焰探测器电源三（10）和火焰探测器电源四（11），还包括外设的厂用电源一（1）、厂用电源二（2）、厂用电源三（3）、厂用电源四（4）、冗余二极管一（6）和冗余二极管二（12）；厂用电源一（1）和厂用电源二（2）分别连接两个电源转换装置（5）后均与冗余二极管一（6）连接，且冗余二极管一（6）分别与火焰探测器电源一（8）和火焰探测器电源四（11）连接；厂用电源三（3）和厂用电源四（4）分别连接两个电源转换装置（5）后均与冗余二极管二（12）连接，且冗余二极管二（12）分别与火焰探测器电源二（9）和火焰探测器电源三（10）连接。
  2. 根据权利要求1所述的一种火电厂锅炉火焰探测器电源分配优化装置，其特征在于：火焰探测器电源一（8）、火焰探测器电源二（9）、火焰探测器电源三（10）和火焰探测器电源四（11）呈矩形且以顺时针方向依次设置在煤层的四个角落处。
  3. 根据权利要求1所述的一种火电厂锅炉火焰探测器电源分配优化装置，其特征在于：冗余二极管一（6）输出端和冗余二极管二（12）输出端均连接有失电报警装置（7）。
PCT/CN2023/089268 2022-04-20 2023-04-19 一种火电厂锅炉火焰探测器电源分配优化装置 WO2023202630A1 (zh)

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CN103499958A (zh) * 2013-09-30 2014-01-08 中国神华能源股份有限公司 一种mft控制方法及设备
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