RANKINE CYCLE DEVICE AND OPERATION METHOD OF THE SAME

• Main Authors: HONMA MASAYA, KURAMOTO TETSUEI
• Format: Patent
• Language: English; Japanese
• Published: 02.09.2021
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ACCUMULATORS; STEAM ENGINE PLANTS; STEAM ENGINES; WEAPONS

To improve reliability of a Rankine cycle device which includes a bypass path and a flow rate regulator.SOLUTION: A Rankine cycle device 50 includes an expander 3, a bypass path 16 for bypassing the expander 3, a flow rate regulator 5 provided in the bypass path 16, and a control device 20 for controlling the flow rate regulator 5. In the case where a deviation acquired by subtracting a pressure difference between an inlet pressure of the expander 3 and an outlet pressure of the expander 3 from a target value is equal to or greater than a threshold value for predetermined time, or in the case where a deviation acquired by subtracting the inlet pressure of the expander 3 from a target value is equal to or greater than a threshold value for predetermined time, the control device 20 executes at least one processing selected from a group comprising processing for allowing the flow rate regulator 5 to perform an opening operation and processing for allowing the flow rate regulator 5 to perform a closing operation.SELECTED DRAWING: Figure 1 【課題】バイパス経路及び流量調整器を備えたランキンサイクル装置の信頼性を向上させる。【解決手段】本開示のランキンサイクル装置５０は、膨張機３と、膨張機３を迂回するバイパス経路１６と、バイパス経路１６に設けられた流量調整器５と、流量調整器５を制御する制御装置２０と、を備えている。膨張機３の入口圧力と膨張機３の出口圧力との圧力差を目標値から減じることによって得られる偏差が所定時間にわたって閾値以上である場合、又は、膨張機３の入口圧力を目標値から減じることによって得られる偏差が所定時間にわたって閾値以上である場合、制御装置２０は、流量調整器５を開動作させる処理及び流量調整器５を閉動作させる処理からなる群より選ばれる少なくとも１つの処理を実行する。【選択図】図１