標準解讀
《GB/T 44556-2024 制冷系統(tǒng)及熱泵 部件和接頭的密封性評定》這一標準主要針對制冷系統(tǒng)以及熱泵中的部件與連接點,規(guī)定了其密封性能的評估方法。該標準適用于各類制冷劑使用環(huán)境下的設(shè)備組件,旨在通過標準化測試流程來確保這些關(guān)鍵部位不會發(fā)生泄漏,從而保證整個系統(tǒng)的穩(wěn)定運行和安全。
標準詳細描述了不同類型的密封性測試技術(shù),包括但不限于壓力衰減法、氦氣檢測法等,并為每種方法提供了具體的實施步驟和技術(shù)要求。對于如何準備測試樣本、設(shè)定合適的測試條件(如溫度、壓力)以及如何準確記錄和分析測試結(jié)果,也給出了明確指導(dǎo)。此外,還特別強調(diào)了測試過程中需要注意的安全事項,以防止因操作不當而導(dǎo)致的風(fēng)險。
在適用范圍方面,《GB/T 44556-2024》不僅涵蓋了傳統(tǒng)意義上的家用或商用空調(diào)系統(tǒng),還包括了工業(yè)級制冷裝置以及其他形式的熱泵應(yīng)用。通過對廣泛領(lǐng)域內(nèi)相關(guān)產(chǎn)品進行統(tǒng)一規(guī)范,有助于提高行業(yè)內(nèi)整體技術(shù)水平和服務(wù)質(zhì)量,促進節(jié)能減排目標的實現(xiàn)。
該標準還明確了合格判定標準,即只有當所有測試項目均達到規(guī)定指標時,才能認定被測對象符合密封性要求。同時,鼓勵生產(chǎn)企業(yè)根據(jù)自身情況選擇更加嚴格的企業(yè)內(nèi)部標準,以進一步提升產(chǎn)品質(zhì)量。
如需獲取更多詳盡信息,請直接參考下方經(jīng)官方授權(quán)發(fā)布的權(quán)威標準文檔。
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- 2024-09-29 頒布
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文檔簡介
ICS27.200
CCSJ73
中華人民共和國國家標準
GB/T44556—2024
制冷系統(tǒng)及熱泵
部件和接頭的密封性評定
Refrigeratingsystemsandheatpumps—
Qualificationoftightnessofcomponentsandjoints
(ISO14903:2017,MOD)
2024?09?29發(fā)布2025?04?01實施
國家市場監(jiān)督管理總局
國家標準化管理委員會發(fā)布
GB/T44556—2024
目次
前言··························································································································Ⅲ
1范圍·······················································································································1
2規(guī)范性引用文件········································································································1
3術(shù)語和定義··············································································································2
4符號·······················································································································3
5試驗要求·················································································································3
6封閉式系統(tǒng)的要求·····································································································6
7試驗程序·················································································································6
7.1通則·················································································································6
7.2樣品選取···········································································································7
7.3試驗溫度···········································································································7
7.4密封性試驗········································································································7
7.5接頭的要求·······································································································10
7.6壓力?溫度振動試驗(PTV試驗)·············································································10
7.7運行模擬··········································································································17
7.8凍結(jié)試驗··········································································································18
7.9封閉式接頭的附加壓力試驗··················································································19
7.10真空試驗········································································································19
7.11相容性試驗·····································································································20
7.12封閉式接頭的疲勞試驗······················································································22
8試驗報告···············································································································22
9用戶須知信息·········································································································22
附錄A(資料性)等效密封性控制等級············································································23
附錄B(規(guī)范性)試驗布置···························································································27
參考文獻····················································································································29
Ⅰ
GB/T44556—2024
前言
本文件按照GB/T1.1—2020《標準化工作導(dǎo)則第1部分:標準化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)
定起草。
本文件修改采用ISO14903:2017《制冷系統(tǒng)及熱泵部件和接頭的密封性評定》。
本文件與ISO14903:2017相比做了下述結(jié)構(gòu)調(diào)整:
——ISO14903:2017的7.6.4.2.1~7.6.4.2.9、7.6.5.3.1~7.6.5.3.7、7.6.5.4.6.1~7.6.5.4.6.5用列項
形式表述(見7.6)。
本文件與ISO14903:2017的技術(shù)差異及其原因如下:
——用規(guī)范性引用的GB/T9237替換了ISO5149?1、ISO5149?2(見第3章、7.9),以適應(yīng)我國的
技術(shù)條件;
——刪除了標準中未使用到的符號N(見第4章);
——用規(guī)范性引用的GB/T44557替換了ISO13971、GB4706.17替換了IEC60335?2?34(見第5
章),以適應(yīng)我國的技術(shù)條件、提高可操作性;
——增加了規(guī)范性引用的GB/T40335—2021,刪除了EN13185(見7.4.2),以適應(yīng)我國的技術(shù)條
件、提高可操作性;
+140℃89
——tmax參數(shù)的描述更改為“制造商規(guī)定的最高溫度,如未規(guī)定則按”(見表、表),以提
高試驗的可操作性,消除歧義;
——用規(guī)范性引用的GB/T2423.10替換了IEC60068?2?6、GB/T2423.56替換了IEC60068?2?
64(見7.6.5.4.5),以適應(yīng)我國的技術(shù)條件、提高可操作性;
——用規(guī)范性引用的GB/T1690替換了ISO1817、GB/T11547替換了ISO175(見7.11.3),以
適應(yīng)我國的技術(shù)條件、提高可操作性。
本文件做了下列編輯性改動:
——改正ISO14903:2017的編輯性錯誤,將圖2中“表2和表3”更改為“表1和表2”,“表4和
表5”更改為“表3和表4”;
——改正ISO14903:2017的編輯性錯誤,將7.6.5.4.5部件試驗1中的“表12”更改為“表11”(見
7.6.5.4.5);
——刪除了ISO14903:2017中表A.1中的注。
請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機構(gòu)不承擔(dān)識別專利的責(zé)任。
本文件由中國機械工業(yè)聯(lián)合會提出。
本文件由全國冷凍空調(diào)設(shè)備標準化技術(shù)委員會(SAC/TC238)歸口。
本文件起草單位:合肥通用機電產(chǎn)品檢測院有限公司、中國標準化研究院、丹佛斯(天津)有限公
司、廣東美的暖通設(shè)備有限公司、浙江三花商用制冷有限公司、廣東芬尼克茲節(jié)能設(shè)備有限公司、法雷
奧汽車空調(diào)湖北有限公司、武城縣市場監(jiān)督管理局、合肥通用機械研究院有限公司。
本文件主要起草人:陳新強、方敏、王巖峰、肖靜、李燕龍、陳雨忠、劉遠輝、趙長城、李勝博、謝波、
王志梅、趙宗彬、胡一清、王汝金、王壽川。
Ⅲ
GB/T44556—2024
制冷系統(tǒng)及熱泵
部件和接頭的密封性評定
1范圍
本文件提供了GB/T9237相關(guān)部分所述的用于制冷系統(tǒng)及熱泵的封閉式和密封式部件、接頭和
零件的密封性的型式認可評定程序。相關(guān)的封閉式和密封式部件、接頭和零件主要是指配件、爆破片、
法蘭式或裝配式的組件。非金屬材料制成的柔性管的密封性依據(jù)GB/T44557。本文件涵蓋了金屬柔
性管。
本文件所包含的要求適用于公稱尺寸不超過DN50的接頭和內(nèi)部體積不超過5L且質(zhì)量不超過
50kg的部件。
本文件旨在描述部件按制造商規(guī)定的程序裝配后,其運行期間遇到的密封應(yīng)力,并給出了部件供
應(yīng)商向負責(zé)執(zhí)行該程序的人員提供的最少必要信息的清單。
本文件規(guī)定了部件按制造商的要求進行裝配后的整體的密封性等級。
本文件適用于制冷裝置中使用的封閉式和密封式部件、接頭和零件,包括所有帶有密封件的部件,
無論其材料和設(shè)計如何。
本文件規(guī)定了可被視為封閉式接頭的機械接頭的附加要求。
2規(guī)范性引用文件
下列文件中的內(nèi)容通過文中的規(guī)范性引用而構(gòu)成本文件必不可少的條款。其中,注日期的引用文
件,僅該日期對應(yīng)的版本適用于本文件;不注日期的引用文件,其最新版本(包括所有的修改單)適用于
本文件。
GB/T1690硫化橡膠或熱塑性橡膠耐液體試驗方法(GB/T1690—2010,ISO1817:2005,
MOD)
GB/T2423.10環(huán)境試驗第2部分:試驗方法試驗Fc:振動(正弦)(GB/T2423.10—2019,
IEC60068?2?6:2007,IDT)
GB/T2423.56環(huán)境試驗第2部分:試驗方法試驗Fh:寬帶隨機振動和導(dǎo)則(GB/T2423.56—
202
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