GB/T 47846-2026螺桿膨脹機轉子基本參數和適用范圍

ICS27.040

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中華人民共和國國家標準

GB/T47846—2026

螺桿膨脹機轉子基本參數和適用范圍

Basicparametersandapplicationscopeoftherotorsinscrewexpander

2026?07?02發布2027?02?01實施

國家市場監督管理總局

國家標準化管理委員會發布

GB/T47846—2026

目次

前言··························································································································Ⅲ

1范圍·······················································································································1

2規范性引用文件········································································································1

3術語和定義··············································································································1

4轉子齒形·················································································································2

5轉子基本參數與尺寸··································································································3

6轉子適用范圍···········································································································7

7內容積比參考值········································································································9

Ⅰ

GB/T47846—2026

前言

本文件按照GB/T1.1—2020《標準化工作導則第1部分：標準化文件的結構和起草規則》的規

定起草。

請注意本文件的某些內容可能涉及專利。本文件的發布機構不承擔識別專利的責任。

本文件由中國電器工業協會提出。

本文件由全國螺桿膨脹機標準化技術委員會（SAC/TC512）歸口。

本文件起草單位：江西華電電力有限責任公司、西安交通大學、江西省質量和標準化研究院、合肥

通用機電產品檢測院有限公司、上海齊耀節能科技有限公司、福建雪人壓縮機有限公司、武漢新世界制

冷工業有限公司、江西華電螺桿發電技術有限公司、南京農業大學。

本文件主要起草人：王闖、劉鳳鋼、胡上吟、陳亮樂、秦智軍、朱斌祥、姬晨、邢子文、朱立偉、魏德強、

張天云、雷寧寧、林魁、刁安娜、劉蔚堉、黃心悅、蔣小平、翟羽佳、張小強、周岳、劉進亮、姚同林、劉常峰。

Ⅲ

GB/T47846—2026

螺桿膨脹機轉子基本參數和適用范圍

1范圍

本文件規定了螺桿膨脹機轉子（以下簡稱“轉子”）的齒形、基本參數和尺寸、適用范圍以及內容積

比參考值。

本文件適用于工質溫度不大于450℃、壓力不大于10.0MPa、進出口壓差不大于3.5MPa的螺桿

膨脹機。

2規范性引用文件

下列文件中的內容通過文中的規范性引用而構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/T30554螺桿膨脹機術語

3術語和定義

GB/T30554界定的以及下列術語和定義適用于本文件。

3.1

中心距centerdistance

陰、陽轉子兩軸線的間距。

3.2

節圓直徑pitchdiameter

轉子嚙合節圓的直徑。

3.3

齒根高dedendum

陰轉子齒根/陽轉子齒頂到節圓的距離。

3.4

齒頂高addendum

陰轉子齒頂到節圓的距離。

3.5

長徑比length?diameterratio

螺桿帶型線部分的長度與陽轉子外徑之比。

3.6

導程lead

螺桿端面型線繞轉子軸線、沿螺旋線旋轉一周，在轉子軸線方向移動的距離