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                                        蒸發器密封性能試驗方法簡介

                                        2019-01-16 0

                                        蒸發器密封性能試驗方法簡介:

                                        1、水中氣密性試驗

                                        水中氣密性試驗是在管內充進一定壓力的壓縮空氣或氮氣,然后將蒸發器浸入20℃~35℃水中1min,用肉眼觀察有無氣泡漏出。密封性能試驗壓力,見下表:

                                        項目密封性能試驗壓力/Mpa備注
                                        盤管截面全部圓管 1.8
                                        部分盤管截面D形管或異形管 1.3 盤管加工成截面異形管
                                        板式蒸發器 1 板式蒸發器厚度≥1.5
                                        0.8 板式蒸發器1.2≤厚度<1.5
                                        0.7 板式蒸發器1.1≤厚度<1.2
                                        0.6 板式蒸發器,管路單面吹脹
                                        0.7 鑲嵌毛細管板式蒸發器

                                        2、蒸發器年泄露量試驗

                                        蒸發器管路內充入制冷劑,放置在正壓室內,環境溫度16℃~32℃,檢漏儀調節到年漏量0.5g,對蒸發器任何部位進行檢漏,觀察檢漏儀顯示結果。

                                        3、鑲嵌毛細管蒸發器的回泄試驗

                                        如下圖 a)所示,從試樣連接管管口中通入0.3MPa壓力的氦氣,用堵頭塞位另一端,浸入水中,從連接管口收集排出的氦氣,時間1min,通過量筒的刻度讀出回泄量。試樣如下圖 b)所示

                                        1558526201.jpg

                                        (鑲嵌毛細管蒸發器的回泄試驗示意圖a、b)

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