• 한국생산제조학회지
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• 제19권1호
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• pp.134-139
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• 2010

In this study, we developed the gear type vane damper replacing the link type through gear design using Finite Element Analysis(FEA). FEA about the pinion and the vane shaft in the boss of gear type damper for quality improvement was accomplished. We analyzed fluid flow according to angular displacement. Catched the problem of the torque and backlash bring to the pinion as structure improvement of the forced draft fan(FD FAN). Finally, we compared the gear driving result with simulation. It is the objective of the present study to identify a nonlinear flow rate control of gear type vane damper and to suggest a damper shape with a linear flow rate control. This study is related to the development of gear type vane damper change link type in forced draft fan.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 동계학술발표대회 논문집
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• pp.375-380
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• 2008

This study have processed the developing of vane damper with accurate control by using gear which is a flow-control equipment of marine boiler's FD fan on this research. For the developing of vane damper, we have corrected some problem from welding & assembly process by changing the design, and for the case of an emergency case, we have applied the easy disassembly & assembly on that vane damper. Compared to Rink type vane damper in current, we have focused on high efficiency with low price of that new developing damper. For selection of actuator, we have tried to find the propriety with our developing focus. Also, we have developed a jig of assembly processing for high productivity with quality, it caused the best assembly performance with heat-treated & processed parts.

• 한국산업융합학회 논문집
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• 제19권4호
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• pp.216-222
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• 2016

Thus, this study aimed to develop a gear-type vane damper in order to replace the link-type vane damper. To achieve this goal, the torque generated in a gear-type vane damper was analyzed, and a structural analysis was conducted. In addition, the fluid flow was analyzed according to the changes in the vane's angle, and experimental tests such as a dry-heat test and cold test were conducted considering the operating conditions of the vessels. Moreover, an appropriate actuator was selected for the developed gear-type vane damper, and studies on the reduction in the backlash due to the facing-pressure adjustment length and flow rate and leakage test due to the vane's angle were conducted.

• 한국기계가공학회지
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• 제14권2호
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• pp.7-13
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• 2015

In this study, we developed a gear-type vane damper which replaces the link type through a proper gear design by means of a finite element analysis. We analyzed the fluid flow according to the amount of angular displacement. torque and backlash problems were addressed in conjunction with the pinion as a structural improvement of the forced draft fan (FD FAN). Through an environmental test. Also, results nearly identical to those in the test could be drawn when using a numerical method. Finally, we compared the gear driving result with simulation results. objective of the present study is to identify a nonlinear flow rate control method for a gear-type vane damper and to propose a damper shape which offers linear flow rate control. This study is related to the development of a gear-type vane damper of the change-link type in a forced draft fan.

• 한국생산제조학회지
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• 제21권1호
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• pp.137-143
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• 2012

In this study, it was conducted to design each components of vane damper for industrial flow control fan and the flow rates were analysed by experimental and numerical method. Through environmental test, it could be confirmed that the designed vane damper was appropriate. Also, almost identical results with test could be drawn from numerical method. Finally, flow rates of electric and pneumatic actuator were measured by test. As the results, difference of flow rate according to opening ratio was smaller in pneumatic actuator than that in electric actuator.

• 사물인터넷융복합논문지
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• 제10권5호
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• pp.65-71
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• 2024

FD FAN(강제통풍팬)은 가스나 공기를 가압하여 목적한 곳으로 이송할 때 쓰이는 장치이며, 흡입 유량을 제어하기 위해서 베인 댐퍼를 사용하고 있다. 베인 댐퍼는 선박 보일러 내부의 완전 연소를 위하여, 베인의 개폐 각도를 조절하여 공기의 흡입 유량을 제어하는 유량조절 밸브이다. 대부분의 선박에는 링크식 베인 댐퍼를 사용하여 유량을 자동 또는 수동으로 조절할 수 있는 팬이 적용되고 있다. 그러나 초기 0~20도 각도에서 베인의 각도를 제어하는 링크의 불균형으로 인해 베인이 짧은 순간에 갑자기 열림으로서 순간적으로 많은 유량이 보일러 내부에 유입되기 때문에 불완전 연소로 인해 매연발생이 심각한 상태이다. 이것은 베인 댐퍼를 제어하는 링크의 복잡한 구조로 인한 조립 불균형의 구조적인 문제점과 링크 축에 걸리는 전달 토크가 골고루 분포하지 않고, 특정한 링크에 집중되는 현상으로 인해 축의 파괴가 발생되는 기술적인 문제가 뒤따르기 때문이다. 본 연구에서는 링크식을 대체한 기어식 베인 댐퍼를 개발하기 위해서, 백래쉬 발생량 최소화 및 발생하는 토크를 분석하고, 조립식에 따른 품질 및 생산성 향상을 도모하였고, 베벨기어의 강도를 증명하였고, 선박이라는 특수성을 감안하고 사고위험시 즉각조치를 위한 IoT 기초연구를 위한 환경시험을 평가하였다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1987년도 정기총회 및 창립40주년기념 학술대회 학회본부
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• pp.362-366
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• 1987

The amount of inflowing Air into the boiler has controlled by manipulating the opening of valve, damper and vane, as fan operated by induction motor operats at constant speed, but these control methods are not efficient. Thus VVVf(Variable Voltage Variable Frequency) control of fan has selected to improve efficiency and to acquire power savings. Control system of Air Flow is affected by nonlinearity caused by load variation, vane opening, etc. The analysis of control parameter causing nonlinearity is needed to acquire optimal control and excellent transient response. This paper provides modeling of boiler with various load conditions and vane opening, and analysis of this system.