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GB/T 33638-2017 English PDF

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GB/T 33638-2017: Vacuum technology -- Turbomolecular pumps -- Measurement of rapid shutdown torque
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GB/T 33638-2017English374 Add to Cart 4 days [Need to translate] Vacuum technology -- Turbomolecular pumps -- Measurement of rapid shutdown torque Valid GB/T 33638-2017

PDF similar to GB/T 33638-2017


Standard similar to GB/T 33638-2017

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Basic data

Standard ID GB/T 33638-2017 (GB/T33638-2017)
Description (Translated English) Vacuum technology -- Turbomolecular pumps -- Measurement of rapid shutdown torque
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J78
Classification of International Standard 23.160
Word Count Estimation 20,266
Date of Issue 2017-05-12
Date of Implementation 2017-12-01
Quoted Standard ISO 3529-2
Adopted Standard ISO 27892-2010, IDT
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies a test method for turbo-molecular pump emergency stop torque (breaking torque). This torque is generated by the gas impulses generated by the axial vanes or helical channels. The main destructive force that causes the molecular pump to break is the torque centered on the rotor axis. Other possible small forces and torques are not covered by this standard. There are two kinds of damage in the form: broken pump rapid drop and rotor scraping fall, this standard applies. Turbine molecular pumps and drag molecular pumps can use the same test method.

GB/T 33638-2017: Vacuum technology -- Turbomolecular pumps -- Measurement of rapid shutdown torque


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Vacuum technology - Turbomolecular pumps - Measurement of rapid shutdown torque ICS 23.160 J78 National Standards of People's Republic of China Vacuum technology - Turbine molecular pump test for emergency stop torque (ISO 27892..2010, IDT) 2017-05-12 released 2017-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface III Introduction IV 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 symbols, definitions and units 2 5 Turbine molecular pump failure test method 3 5.1 Overview 3 5.2 Checked items 3 5.3 broken pump and scratches (rotor damage and blade scratch) test conditions 3 5.4 Destructive testing device 6 5.5 Destructive testing process 8 5.6 "Scratch" Destructive test method (rotor or static film scratch) 8 Test Report 14 Appendix A (informative) Technical details in the technical drawings and documentation References 16

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the translation method equivalent to ISO 27892..2010 "vacuum technology turbo molecular pump emergency stop torque test". And the normative reference in this standard international documents are consistent with the relationship between China's documents are as follows. Vacuum technology terminology (ISO 3529. 1981, MOD) GB/T This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Vacuum Technology Standardization Technical Committee (SAC/TC18). The drafting of this standard. Beijing Science and Technology Co., Ltd. in the Branch, Tianjin spin technology research and development Co., Ltd., Hefei Zhixian photoelectric technology Limited liability company, Weihai Chi Tak Vacuum Technology Co., Ltd., Dongguan Jin Sheng Precision Components Co., Ltd., Sichuan North Vacuum Technology (Beijing) Co., Zibo City electromechanical pump product quality inspection research institute, Shenyang Institute of vacuum technology. The main drafters of this standard. Zhu Guochen, Zhang Qinde, Zou Meng, Li Qizhi, Xiang Haiming, Sha Honglei, Yu Tianye, Liu Lei, Zhang Chengguang, Hu Mei, Lin Lezhong, Zheng Wenwen, Wang Changming, Zhou Guorong, Zheng Rongxi, Jiang Yunfeng, Ma Kunyan, Wang Lingling.

Introduction

Turbine molecular pump or composite molecular pump in operation at high speed operation when the rotor stored a lot of kinetic energy. If the rotor is damaged, the kinetic energy will be Very short time to release, and may damage the pump housing of the turbomolecular pump. The huge reverse torque will act on the pump housing, fixed the turbine The bolts of the pump may break. This standard collects studies that lead to these possibilities and prepares the drafting of a turbo molecular pump manufacturer's test method to improve User's use of security. The core content of this standard is the turbo molecular pump and composite molecular pump emergency stop torque test method. The term "turbomolecular pump", as used in this standard, is generic and includes dragged molecular pumps and composite molecular pumps. Vacuum technology - Turbine molecular pump test for emergency stop torque

1 Scope

This standard specifies a test method for turbo-molecular pump emergency stop torque (breaking torque). This torque is produced by axial flow blades or spiral passages Health generated by the gas momentum. The main destructive force that causes the molecular pump to break is the torque centered on the rotor axis. Other may occur smaller Force and torque are not covered by this standard. There are two kinds of damage in the form. broken pump rapid drop and rotor scrape drop, this standard applies. Turbine molecular pumps and drag the molecular pump can be made Use the same test method.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. ISO 3529-2 Vacuum technology vocabulary - Part 2. Vacuum pumps and related terms (Vacuumtechnology - Vocabulary - Part 2. Vacuumpumpsandrelatedterms)

3 terms and definitions

ISO 3529-2 and the following terms and definitions apply to this document. 3.1 Inlet flange inletflange A turbine molecular pump inlet flange for connection and fixing to a vacuum vessel. 3.2 Rotor rotor Rotating body Rotary parts rotational parts (Vacuum pump) assembly comprising a shaft, a rotor body and a rotor blade supported by a bearing and driven by a motor. 3.3 Rotor blade rotorblade Turbine blade turbineblade Rotating blade (Vacuum pump) The rotating part of the pump has its peripheral speed close to the speed of sound, through the rotation to achieve vacuum exhaust, similar to axial flow turbine blades. 3.4 Rotor body rotorbody Rotor cylinder part cylinderpartofrotor Rotor spiral groove part rotorhub (Vacuum pump) rotor part of the rotor blade in addition to the part. 3.5 Centrifugal destruction centrifugaldestruction Centrifugal force produced by splitting splitcausedbycentrifugalforce

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