STEAM SYSTEM

• Main Authors: OKAMOTO YUSUKE, SAEKI TAKUYA, INOUE HARUKI, OGURI TSUKASA
• Format: Patent
• Language: English; Japanese
• Published: 20.08.2020
• 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 ensure that damage to a shaft seal part of a rotating body that occurs at the time of warming of a steam expander can be effectively restrained.SOLUTION: A steam system 1 comprises: a steam expander 10 comprising a main body 11 into which steam flows, and a screw 12 pivotally supported inside the main body 11; a steam supply temperature sensor 51 serving as a temperature detection part for detecting a temperature of the steam flowing into the main body 11; and a control unit 100 for performing warming control for controlling a steam supply valve 22 so as to circulate the steam inside the main body 11 while keeping a resting state of the screw 12 serving as a rotating body, and controlling the steam supply valve 22 so as to rotate the screw 12 after the warming control.SELECTED DRAWING: Figure 1 【課題】蒸気膨張機の暖機時に生じる回転体の軸封部へのダメージを効果的に抑制できること。【解決手段】蒸気システム１は、蒸気が流入する本体１１及び１１本体の内部に軸支されるスクリュー１２を有する蒸気膨張機１０と、本体１１に流入する蒸気温度を検出する温度検出部としての給蒸気温度センサ５１と、回転体としてのスクリュー１２の静止状態を維持しつつ本体１１の内部に蒸気を流通させるように給蒸弁２２を制御する暖機制御を実行し、暖機制御後にスクリュー１２を回転させるように給蒸弁２２を制御する制御部１００と、を備える。【選択図】図１