KR100345158B1 - The coal flow control for circulati on fluidized bed combustion boiler - Google Patents

The coal flow control for circulati on fluidized bed combustion boiler Download PDF

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Publication number
KR100345158B1
KR100345158B1 KR1019990060613A KR19990060613A KR100345158B1 KR 100345158 B1 KR100345158 B1 KR 100345158B1 KR 1019990060613 A KR1019990060613 A KR 1019990060613A KR 19990060613 A KR19990060613 A KR 19990060613A KR 100345158 B1 KR100345158 B1 KR 100345158B1
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coal
fluidized bed
steam
bed combustion
combustion boiler
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KR1019990060613A
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Korean (ko)
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KR20010057399A (en
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박영훈
서환석
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현대중공업 주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N1/00Regulating fuel supply
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23NREGULATING OR CONTROLLING COMBUSTION
    • F23N5/00Systems for controlling combustion
    • F23N5/02Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

본 발명은 유동층 연소보일러의 석탄량 제어장치에 관한 것으로, 그 목적은 유동층 보일러의 주연료인 석탄량 조절용 제어 회로에 사용되고 있는 방사선 동위원소(γ-Ray Source)를 사용하지 않고 기계장치와 전, 계장 신호를 조합하여 석탄 이송장치를 스팀(Steam) 변화량에 따라 조절토록 함으로써 방사선 동위원소(γ-Ray Source) 사용시 관련법규에 따라 부수적으로 발생하는 문제점을 해소하여 보일러의 안정적인 운전확보가 가능토록 한 회로장치를 제공하는데 있다.The present invention relates to a coal amount control device of a fluidized bed combustion boiler, the object of which is to use a mechanical device and electric, By combining instrumentation signals, the coal feeder can be adjusted according to the amount of steam change, thereby eliminating the problems caused by the related laws when using γ-Ray Source and ensuring stable operation of the boiler. To provide a circuit device.

본 발명의 구성은 유동층 연소 보일러에 투입되는 석탄의 두께를 일정하게 유지할 수 있는 스크랩퍼(Scraper, 11)를 석탄 이송장치(17) 일측 상단에 설치하여 석탄량을 스팀 변화량 감지기(Steam, 12) 신호를 받아 스팀(Steam) 변화량에 따른 석탄량을 현재 석탄 이송장치의 모터(15) 속도를 조절하는 속도 제어 유니트(13)에 의하여 석탄 투입량을 제어하게 한다.The configuration of the present invention by installing a scraper (Scraper, 11) that can maintain a constant thickness of the coal injected into the fluidized bed combustion boiler on the upper side of the coal transfer device 17, the amount of coal is detected steam change (Steam, 12) In response to the signal, the amount of coal according to the steam change is controlled by the speed control unit 13 which adjusts the speed of the motor 15 of the current coal feeder.

Description

유동층 연소보일러의 석탄량 제어장치{The coal flow control for circulati on fluidized bed combustion boiler}The coal flow control for circulati on fluidized bed combustion boiler

본 발명은 유동층 연소보일러의 석탄량 제어장치에 관한 것으로, 상세하게는 유동층 연소 보일러에 석탄을 투입시 자동으로 석탄 이송장치의 속도를 조절하여 스팀(Steam) 발생을 제어할 수 있는 유동층 연소보일러의 석탄량 제어장치에 관한 것이다.The present invention relates to a coal amount control device for a fluidized bed combustion boiler, and more particularly, to a fluidized bed combustion boiler capable of controlling steam generation by automatically adjusting the speed of a coal transfer device when coal is introduced into a fluidized bed combustion boiler. It relates to a coal quantity control device.

기존에는 사용되고 있는 방사선 동위원소(γ-Ray Source)를 사용하여 석탄 두께를 측정하여 석탄 이송장치 속도를 제어하였으나, 방사선 동위원소(γ-Ray Source) 사용시 수입품으로서 통관 업무시 관련 면허 소지자를 채용하여야 수입이 가능하고 취급 및 유지 보수시 일정교육 이수자 및 면허 소지자에 한하여 취급이 가능한 관련법규로 규정되어 있으므로 방사선 동위원소(γ-Ray Source) 설비의 문제 발생시 보일러의 안정적인 운전이 어렵다는 단점이 있다.In the past, the speed of the coal feeder was controlled by measuring the thickness of the coal by using the radioactive isotope (γ-Ray Source). However, when using the radioactive isotope (γ-Ray Source), the relevant licensee must be employed for customs clearance. It is disadvantageous that stable operation of the boiler is difficult in case of problems with the γ-Ray Source facility because it is regulated by relevant laws that can be imported and handled only for those who have undergone schedule education and licensee during handling and maintenance.

상기와 같은 문제점을 해결하기 위한 본 발명의 목적은 유동층 보일러의 주연료인 석탄량 조절용 제어 회로에 사용되고 있는 방사선 동위원소(γ-Ray Source)를 사용하지 않고 기계장치와 전, 계장 신호를 조합하여 석탄 이송장치를 이용하여 스팀(Steam) 변화량에 따라 조절토록 함으로써 방사선 동위원소(γ-Ray Source) 사용시 관련법규에 따라 부수적으로 발생하는 문제점을 해소하여 보일러의 안정적인 운전확보가 가능토록 한 회로장치를 제공하는데 있다.An object of the present invention for solving the above problems is to combine the mechanical and electrical instrumentation signals without using a radioactive isotope (γ-Ray Source) used in the control circuit for coal quantity control, the main fuel of the fluidized bed boiler By using a coal transfer device, it is possible to control the amount of steam changes, thereby eliminating the problems caused by the related laws when using γ-Ray Source and to ensure the stable operation of the boiler. To provide.

도 1은 본 발명 유동층 연소 보일러의 석탄 이송장치의 속도 제어를 도시한 계통도.1 is a system diagram showing the speed control of the coal feeder of the present invention fluidized bed combustion boiler.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

(11): 조정 스크랩퍼(Adjustable scraper)(11): Adjustable scraper

(12): 스팀 변화량 감지기(Flow transmitter)(12): Flow transmitter

(13): 모터 속도 제어기 유니트(13): motor speed controller unit

(14) : 이송 장치 속도 감지기14: feeder speed detector

(l5): 석탄 이송장치 모터(l5): coal feeder motor

(16): 함수 변환기(17) : 이송장치(18) : 석탄사일로(D.C.S) : 제어장치 설비기(16): water converter (17): feeder (18): coal silo (D.C.S): control equipment

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명의 실시예인 구성과 그 작용을 첨부도면에 연계시켜 상세히 설명하면 다음과 같다.When described in detail with reference to the accompanying drawings, the configuration and the operation of the embodiment of the present invention to achieve the object as described above and to perform the task for eliminating the conventional drawbacks.

도 1은 본 발명 유동층 연소 보일러의 석탄 이송장치의 속도 제어를 도시한 계통도인데, 본 발명은 유동층 연소 보일러에 석탄을 투입시 자동으로 석탄 이송장치의 속도를 조절하여 스팀(Steam) 발생을 제어할 수 있는 석탄투입장치에 있어서 석탄 이송장치 모터(15)에 의해 구동되는 석탄이송장치(17)의 일측 상부에는 전후로 작동하는 조정 스크랩터(11)가 설치되고 그 상단에는 석탄 사일로(18)가 설치되며, 석탄 이송장치(17)의 타측에는 스피드 감지기(14)를 설치하여 감지된 신호는 F(x) 변환함수를 내장한 함수변환기(16)로 보내 그 값과 스팀 변화량 감지기(12)의 신호와 비교하여 모터 속도제어 유니트(13)로 전송하는 제어장치 설비기(D.C.S)로 구성된 것이다.이와 같이된 본 발명은 유동층 연소보일러에 석탄을 투입시 이송속도를 자동으로 조절하여 스팀의 발생량을 제어할 수 있게한 석탄량 제어장치를 제공하기 위한 것으로 석탄 사일로(18)에서 석탄 이송장치(17)에 공급된 석탄을 석탄 이송장치(17)의 상단에 설치된 스크랩퍼(11)가 전후 왕복 작동하여 석탄 이송장치(17)에 공급된 석탄의 두께를 일정하게 유지시킨 상태에서 석탄 이송장치 모터(15)의 구동으로 석탄 이송장치(17)에 탑재된 석탄을 이송 공급하는 것이다.1 is a system diagram showing the speed control of the coal transport device of the fluidized bed combustion boiler of the present invention, the present invention is to control the steam (Steam) generation by automatically adjusting the speed of the coal transport device when the coal is injected into the fluidized bed combustion boiler. In the coal inputting device, an upper side of the coal feeder 17 driven by the coal feeder motor 15 is provided with an adjusting scraper 11 which operates back and forth, and a coal silo 18 is installed at the upper end thereof. On the other side of the coal transport device 17, the speed sensor 14 is installed on the other side, and the detected signal is sent to the function converter 16 incorporating the F (x) conversion function and the signal of the steam variation detector 12. Compared to the control unit equipment (DCS) that transmits to the motor speed control unit 13 as compared to the present invention. In order to provide a coal amount control device capable of controlling the amount of production, the scraper 11 installed at the upper end of the coal transfer device 17 transfers the coal supplied from the coal silo 18 to the coal transfer device 17. In the state of maintaining the thickness of the coal supplied to the coal transport device 17 by reciprocating operation, the coal transport device 17 is transported and supplied by the coal transport device motor 15.

이 때 현재 석탄의 양을 개량하기 위하여 석탄 이송장치(17)의 일측에 설치된 스피드(Speed) 감지기(l4)가 이중으로 속도를 측정하고,At this time, in order to improve the current amount of coal, a speed detector (l4) installed on one side of the coal transport device (17) measures the speed twice,

스피드 감지기(14)에 의하여 감지된 석탄 이송장치 속도를 제어장치 설비기(D.C.S)의 함수 변환기(16)로 보내면 이를 이용하여 석탄량으로 변환하도록 초기 보일러 시운전시 이송장치(17)에 따른 석탄량을 산출한 값을 가진 F(X) 변환 함수를 내장한 함수 변환기(16)에서 변환된 값을 보일러의 스팀 요구 변화량을 나타내는 스팀 변화량 감지기(l2)의 신호와 비교하여 석탄 이송장치 모터(15)의 속도를 제어하는 모터 속도제어 유니트(13)에 전달되어 모터(15)의 속도를 증감시킴으로 보일러 스팀 증감에 따른 석탄 투입량을 일정하게 유지시켜 보일러의 안정적인 제어를 실현한다.Coal feeder speed detected by the speed detector 14 is sent to the function converter 16 of the control unit equipment (DCS) to convert it into coal quantity by using the amount of coal according to the feeder 17 during initial boiler commissioning. The coal transfer device motor 15 compares the value converted by the function converter 16 with the F (X) conversion function with the calculated value with the signal of the steam change detector l2 indicating the required steam change amount of the boiler. It is transmitted to the motor speed control unit 13 for controlling the speed of the motor 15 by increasing the speed of the motor 15 to maintain a constant coal input amount according to the boiler steam increase and decrease to realize a stable control of the boiler.

(변형예, 응용예 및 법적해석)(Variants, applications and legal interpretations)

본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

상기와 같은 본 발명은 유동층 보일러의 주연료인 석탄량 조절용 제어 회로에 사용되고 있는 방사선 동위원소(γ-Ray Source)를 사용하지 않고 석탄 이송장치를 스팀(Steam) 변화량에 따라 조절함으로서 방사선 동위원소(γ-Ray Source) 사용시 관련법규에 따라 부수적으로 발생하는 문제점을 해소함으로써, 방사선 동위원소(γ-Ray Source) 사용 중 문제 발생시 보일러의 안정적인 운전이 불가하다는 문제점을 타 설비로 대체함으로서 보일러의 안정적인 운전확보 및 관련법규에 준하는 면허소지자 및 교육 이수자가 요구되지 않으므로 원가절감 효과와 같은 장점이 있다.The present invention as described above does not use a radioactive isotope (γ-Ray Source) that is used in the control circuit for coal quantity control, the main fuel of the fluidized bed boiler by adjusting the coal transfer device according to the steam (Steam) change amount of the radioisotope ( By using the γ-Ray Source, the problem that occurs incidentally in accordance with related laws is resolved, and the stable operation of the boiler is replaced by replacing the problem that the boiler cannot be operated stably when a problem occurs while using the γ-Ray Source. There are advantages such as cost savings because license holders and trainees are not required in accordance with acquisition and related laws.

Claims (1)

유동층 연소 보일러에 석탄을 투입시 자동으로 석탄 이송장치의 속도를 조절하여 스팀(Steam) 발생을 제어할 수 있는 석탄투입장치에 있어서,In the coal input device that can control the steam (Steam) generation by automatically adjusting the speed of the coal feeder when the coal is injected into the fluidized bed combustion boiler, 석탄 이송장치 모터(15)에 의해 구동되는 석탄 이송장치(17)의 일측 상부에는 전후로 작동하는 조정 스크랩터(11)가 설치되고 그 상단에는 석탄 사일로(18)가 설치되며, 석탄 이송장치(17)의 타측에는 스피드 감지기(14)를 설치하여 감지된 신호는 F(x)변환함수를 내장한 함수변환기(16)로 보내 그 값과 스팀 변화량 감지기(12)의 신호와 비교하여 모터 속도제어 유니트(13)로 전송하는 제어장치 설비기(D.C.S)로 구성된 것을 특징으로 하는 유동층 연소보일러의 석탄량 제어장치.On one side of the coal transfer device 17 driven by the coal transfer device motor 15, an adjustment scraper 11 that operates back and forth is installed, and a coal silo 18 is installed on the top thereof, and a coal transfer device 17 is installed. The speed sensor 14 is installed on the other side, and the detected signal is sent to the function converter 16 with the built-in F (x) conversion function, and the motor speed control unit is compared with the value of the steam change detector 12. Coal amount control device for a fluidized bed combustion boiler, characterized in that consisting of a control unit equipment (DCS) to be transmitted to (13).
KR1019990060613A 1999-12-22 1999-12-22 The coal flow control for circulati on fluidized bed combustion boiler KR100345158B1 (en)

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