GB/T 47846-2026 螺杆膨胀机转子基本参数和适用范围

ICS27.040

CCSK59

中华人民共和国国家标准

GB/T47846—2026

螺杆膨胀机转子基本参数和适用范围

Basicparametersandapplicationscopeoftherotorsinscrewexpander

2026⁃07⁃02发布2027⁃02⁃01实施

国家市场监督管理总局

国家标准化管理委员会发布

GB/T47846—2026

目次

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

1范围·······················································································································1

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

3术语和定义··············································································································1

4转子齿形·················································································································2

5转子基本参数与尺寸··································································································3

6转子适用范围···········································································································7

7内容积比参考值········································································································9

Ⅰ

GB/T47846—2026

前言

本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规

定起草。

请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。

本文件由中国电器工业协会提出。

本文件由全国螺杆膨胀机标准化技术委员会（SAC/TC512）归口。

本文件起草单位：江西华电电力有限责任公司、西安交通大学、江西省质量和标准化研究院、合肥

通用机电产品检测院有限公司、上海齐耀节能科技有限公司、福建雪人压缩机有限公司、武汉新世界制

冷工业有限公司、江西华电螺杆发电技术有限公司、南京农业大学。

本文件主要起草人：王闯、刘凤钢、胡上吟、陈亮乐、秦智军、朱斌祥、姬晨、邢子文、朱立伟、魏德强、

张天云、雷宁宁、林魁、刁安娜、刘蔚堉、黄心悦、蒋小平、翟羽佳、张小强、周岳、刘进亮、姚同林、刘常峰。

Ⅲ

GB/T47846—2026

螺杆膨胀机转子基本参数和适用范围

1范围

本文件规定了螺杆膨胀机转子（以下简称“转子”）的齿形、基本参数和尺寸、适用范围以及内容积

比参考值。

本文件适用于工质温度不大于450℃、压力不大于10.0MPa、进出口压差不大于3.5MPa的螺杆

膨胀机。

2规范性引用文件

下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文

件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于

本文件。

GB/T30554螺杆膨胀机术语

3术语和定义

GB/T30554界定的以及下列术语和定义适用于本文件。

3.1

中心距centerdistance

阴、阳转子两轴线的间距。

3.2

节圆直径pitchdiameter

转子啮合节圆的直径。

3.3

齿根高dedendum

阴转子齿根/阳转子齿顶到节圆的距离。

3.4

齿顶高addendum

阴转子齿顶到节圆的距离。

3.5

长径比length⁃diameterratio

螺杆带型线部分的长度与阳转子外径之比。

3.6

导程lead

螺杆端面型线绕转子轴线、沿螺旋线旋转一周，在转子轴线方向移动的距离。

3.7

密封筋/槽sealingrib/groove

阴转子齿顶处密封用筋肋/阳转子齿根处密封用槽。

1