CAJ | 학술논문

基于主动控制进气阀的气量调节系统具有调节范围大、节能效果好等优点，适用于工艺流程中大型压缩机。本文依据热、动力学理论建立了耦合阀片运动的往复压缩机热力学模型，模拟了气缸内气体瞬态压力变化规律及进气阀片运动特性。研究结果表明：调节工况下自动阀和强制阀方式同时存在，执行机构延迟关闭进气阀，使压力升高过程延迟，实现压缩机流量及功率的降低。执行机构在气阀完全打开后作用，不影响气阀打开过程，仅利用撤销时间控制压缩机气量。调节工况下阀片打开速度不变，但关闭速度增大，且阀片与阀座间的最大撞击速度随执行机构撤销角度的增大而增大。由于气阀打开及关闭存在时间延迟，执行机构撤销时间在主轴转角为160°～295°范围内变化时，已实现气量0～100％范围调节。
기우주동공제진기벌적기량조절계통구유조절범위대、절능효과호등우점，괄용우공예류정중대형압축궤。본문의거열、동역학이론건립료우합벌편운동적왕복압축궤열역학모형，모의료기항내기체순태압력변화규률급진기벌편운동특성。연구결과표명：조절공황하자동벌화강제벌방식동시존재，집행궤구연지관폐진기벌，사압력승고과정연지，실현압축궤류량급공솔적강저。집행궤구재기벌완전타개후작용，불영향기벌타개과정，부이용철소시간공제압축궤기량。조절공황하벌편타개속도불변，단관폐속도증대，차벌편여벌좌간적최대당격속도수집행궤구철소각도적증대이증대。유우기벌타개급관폐존재시간연지，집행궤구철소시간재주축전각위160°～295°범위내변화시，이실현기량0～100％범위조절。
Capacity regulation system based on controlling suction valve is suitable for large scale reciprocating compressor in industrial process due to its large regulation range and energy-saving.In this paper,a thermodynamic model coupled with the mo-tion of suction valve is built,and the dynamic gas pressure in cylinder and the motion of valve plate are simulated.The results show that the automatic and controlled suction valves are existed in an adjustment cycle.Because the actuator preventing the suc-tion valve from closing in order to delay the compressing process,the capacity and power of compressor decrease at the same time. The actuator only influences the closing process of suction valve because it motions after the valve is opened.The opening speed is constant but the closing speed is increased in the regulation condition,and the maximum impact speed is increased with the relax angle of actuator.The capacity of 0 ~100% can be adjusted when the actuator relaxs at the axis angle of 160°~293°due to the motion time of vave plate.