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《Science & Technology Vision》 2016-23
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Research on Condenser Level Control Problem in the Refrigeration System in Drawlers

WANG Ling;Qingdao Harbor Vocational &Technical College, Department of Marine Engineering;  
Plate quick-freezing system is installed on fishing boats in order to increase their refrigerating capacity.There would be some new troubles with the complicated,abominable working environments of drawlers,such as the refrigerating system is out of work because of the ship swaying,auto-stop troubles with over-heated oil temperature or high delivery pressure.After theoretical analysis found,the abnormal level auto-controlled by ball float valve was the direct reason.According to the drawler's condition,independent plate quick-freezing system and its common and potential safety problems are analyzed firstly,solutions was proposed and analyzed about the questions in turn.The questions are treated by a simple improvement on the system in question based on the best solution,and the level controller,ball float valve is changed by a pressure relay.Improved quick-freezing system overcomes potential problems,simplifies management,and the frozen goods per day increased to about 3.5% in one year.
【CateGory Index】: U672
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