FIELD: fish industry. SUBSTANCE: this relates to acoustic devices used for directing runs of fish to fishing zone. Simulator has compressed air source 1, and connected to its output is control unit 2. Flexible pipeline 5 successively connects compressed air source 1 and acoustic signal radiators 6-20 which are combined in groups 21-25. Installed in front of each group of radiators beginning from second group is extreme non-return valve 27-30 and receiver 31-34 of fixable volume which is larger than in preceding group. Alternating engagement and disengagement of radiators in groups 21-25 simulate movement of fish runs and stimulate direction of fish movement from distant areas to zone where fishing tools 26 are operating. Application of aforesaid device improves operating efficiency due to increased range of operation and better simulation of fish sound movement. EFFECT: higher efficiency. 2 dwg
申请公布号
RU1575334(C)
申请公布日期
1998.09.10
申请号
SU19884401760
申请日期
1988.04.10
申请人
DAL'NEVOSTOCHNYJ TEKHNICHESKIJ INSTITUT RYBNOJ PROMYSHLENNOSTI I KHOZJAJSTVA;SPETSIAL'NOE KONSTRUKTORSKOE BJURO SREDSTV AVTOMATIZATSII MORSKIKH ISSLEDOVANIJ AN SSSR