ICS27.200

CCSJ73

中華人民共和國國家標(biāo)準(zhǔn)

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(shí)施

國家市場監(jiān)督管理總局

國家標(biāo)準(zhǔn)化管理委員會(huì)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(yàn)要求·················································································································3

6封閉式系統(tǒng)的要求·····································································································6

7試驗(yàn)程序·················································································································6

7.1通則·················································································································6

7.2樣品選取···········································································································7

7.3試驗(yàn)溫度···········································································································7

7.4密封性試驗(yàn)········································································································7

7.5接頭的要求·······································································································10

7.6壓力?溫度振動(dòng)試驗(yàn)（PTV試驗(yàn)）·············································································10

7.7運(yùn)行模擬··········································································································17

7.8凍結(jié)試驗(yàn)··········································································································18

7.9封閉式接頭的附加壓力試驗(yàn)··················································································19

7.10真空試驗(yàn)········································································································19

7.11相容性試驗(yàn)·····································································································20

7.12封閉式接頭的疲勞試驗(yàn)······················································································22

8試驗(yàn)報(bào)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(yàn)布置···························································································27

參考文獻(xiàn)····················································································································29

Ⅰ

GB/T44556—2024

前言

本文件按照GB/T1.1—2020《標(biāo)準(zhǔn)化工作導(dǎo)則第1部分：標(biāo)準(zhǔn)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(xiàng)

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；

——?jiǎng)h除了標(biāo)準(zhǔn)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(yàn)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(dòng)：

——改正ISO14903：2017的編輯性錯(cuò)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(cuò)誤，將7.6.5.4.5部件試驗(yàn)1中的“表12”更改為“表11”（見

7.6.5.4.5）；

——?jiǎng)h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(jī)構(gòu)不承擔(dān)識別專利的責(zé)任。

本文件由中國機(jī)械工業(yè)聯(lián)合會(huì)提出。

本文件由全國冷凍空調(diào)設(shè)備標(biāo)準(zhǔn)化技術(shù)委員會(huì)（SAC/TC238）歸口。

本文件起草單位：合肥通用機(jī)電產(chǎn)品檢測院有限公司、中國標(biāo)準(zhǔn)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(jī)械研究院有限公司。

本文件主要起草人：陳新強(qiáng)、方敏、王巖峰、肖靜、李燕龍、陳雨忠、劉遠(yuǎn)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(rèn)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(yùn)行期間遇到的密封應(yīng)力，并給出了部件供

應(yīng)商向負(fù)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(jìn)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(jì)如何。

本文件規(guī)定了可被視為封閉式接頭的機(jī)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(yàn)方法（GB/T1690—2010，ISO1817：2005，

MOD）

GB/T2423.10環(huán)境試驗(yàn)第2部分：試驗(yàn)方法試驗(yàn)Fc：振動(dòng)（正弦）（GB/T2423.10—2019，

IEC60068?2?6：2007，IDT）

GB/T2423.56環(huán)境試驗(yàn)第2部分：試驗(yàn)方法試驗(yàn)Fh：寬帶隨機(jī)振動(dòng)和導(dǎo)則（GB/T2423.56—

202