制冷
製冷
제랭
REFRIGERATION
2014年
4期
17-20
,共4页
铁路机冷车制冷机组%制冷剂替代%批量改造%方案优化
鐵路機冷車製冷機組%製冷劑替代%批量改造%方案優化
철로궤랭차제랭궤조%제랭제체대%비량개조%방안우화
Refrigeration units of mechanical refrigerated cars%Refrigerant substitute%Mass modification%Scheme optimization
本文介绍了铁路冷藏车制冷机组实施制冷剂R22替代R12改造的意义及改造方案特点，在实施批量改造前对小批量试改形成的两种方案进行了分析研究，制定了对比试验方案，得出了试验结论，为实施批量改造提供了技术数据。对实施批量改造和运用中出现的工艺方案和配件选型、参数设定、降温变慢等关键问题进行了详细的分析研究，并提出了优化解决方案。
本文介紹瞭鐵路冷藏車製冷機組實施製冷劑R22替代R12改造的意義及改造方案特點，在實施批量改造前對小批量試改形成的兩種方案進行瞭分析研究，製定瞭對比試驗方案，得齣瞭試驗結論，為實施批量改造提供瞭技術數據。對實施批量改造和運用中齣現的工藝方案和配件選型、參數設定、降溫變慢等關鍵問題進行瞭詳細的分析研究，併提齣瞭優化解決方案。
본문개소료철로랭장차제랭궤조실시제랭제R22체대R12개조적의의급개조방안특점，재실시비량개조전대소비량시개형성적량충방안진행료분석연구，제정료대비시험방안，득출료시험결론，위실시비량개조제공료기술수거。대실시비량개조화운용중출현적공예방안화배건선형、삼수설정、강온변만등관건문제진행료상세적분석연구，병제출료우화해결방안。
The essay introduces the meaning and modification scheme of substitute refrigerant R22 for R12 in refrig-eration units of railway refrigerated cars.Before carrying out the mass modification, the two schemes based on the small-scale experimental modification are analyzed and studied, the contrast experiment schemes are worked out, the conclusion are drawn from the experiments, thus providing technical data for the mass modification.The key problems occurred during the mass modification and application such as process plan, accessories selection, param-eters setting and the temperature drop slowdown are analyzed and studied in detail, and an optimized scheme are put forward.
