COMPRESSOR UNIT AND CONTROL METHOD FOR COMPRESSOR UNIT

• Main Authors: SEYAMA KATSUHIRO, TEZUKA SATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 16.02.2023
• Subjects: BLASTING; EQUIPMENT FOR SHIPPING; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED,LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; HEATING; LIGHTING; MARINE PROPULSION OR STEERING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; RELATED EQUIPMENT; SHIPS OR OTHER WATERBORNE VESSELS; STORING OF DISTRIBUTING GASES OR LIQUIDS; TRANSPORTING; VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED ORSOLIDIFIED GASES; WEAPONS

To suppress rising of a pressure in a storage tank side passage when low temperature gas flows from a storage tank to a compressor unit.SOLUTION: A compressor unit 100 includes: reciprocating compression stages 201 to 206 for sequentially raising a pressure of subject gas from a tank 101; a bypass passage 301 for bypassing at least a first compression stage 201; a bypass valve 311 provided in the bypass passage 301; an upstream pressure sensor 401 and a temperature sensor 403 provided in a storage tank connection passage 111; a downstream pressure sensor 402 provided in a passage to which an entrance side end unit 322 of the bypass passage 301 is connected; an opening adjustment unit 441 for controlling opening of the bypass valve 311 so that a detection pressure P2 of the downstream pressure sensor 402 is brought near a set pressure PS1; and a set pressure changing unit 431 for raising the set pressure PS1 when a detected temperature T1 of the temperature sensor 403 is lowered.SELECTED DRAWING: Figure 1 【課題】貯槽から圧縮機ユニットに低温のガスが流入した場合に、貯槽側流路における圧力の上昇を抑制する。【解決手段】圧縮機ユニット１００は、貯槽１０１からの対象ガスを順次昇圧する往復動式の圧縮ステージ２０１～２０６と、少なくとも最初の圧縮ステージ２０１をバイパスするバイパス流路３０１と、バイパス流路３０１に設けられたバイパス弁３１１と、貯槽接続流路１１１に設けられた上流圧力センサ４０１及び温度センサ４０３と、バイパス流路３０１の入口側端部３２２が接続される流路に設けられた下流圧力センサ４０２と、下流圧力センサ４０２の検出圧力Ｐ２を設定圧力ＰＳ１に近づくようにバイパス弁３１１の開度を制御する開度調整部４４１と、温度センサ４０３の検出温度Ｔ１が低下すると設定圧力ＰＳ１を高くする設定圧変更部４３１と、を備えた圧縮機ユニット。【選択図】図１