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GB/T 6075.2-2012 English PDF

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GB/T 6075.2-2012: Mechanical vibration -- Evaluation of machine vibration by measurements on non-rotating parts -- Part 2: Land-based steam turbines and generators in excess of 50MW with normal operating speeds of 1500r/min, 1800r/min, 3000r/min and 3600r/min
Status: Valid

GB/T 6075.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 6075.2-2012English314 Add to Cart 3 days [Need to translate] Mechanical vibration -- Evaluation of machine vibration by measurements on non-rotating parts -- Part 2: Land-based steam turbines and generators in excess of 50MW with normal operating speeds of 1500r/min, 1800r/min, 3000r/min and 3600r/min Valid GB/T 6075.2-2012
GB/T 6075.2-2007English559 Add to Cart 3 days [Need to translate] Measurement and evaluation of machines on non- rotating parts of the machine vibration -- Part 2: 50MW above the rated speed 1500r/min, 1800r/min, 3000r/min, 3600r/min land turbines and generators installed Obsolete GB/T 6075.2-2007
GB/T 6075.2-2002English399 Add to Cart 3 days [Need to translate] Mechanical vibration -- Evaluation of machine vibration by measurements on non-rotating parts -- Part 2: Large land-based steam turbine generator sets in excess of 50MW Obsolete GB/T 6075.2-2002

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Basic data

Standard ID GB/T 6075.2-2012 (GB/T6075.2-2012)
Description (Translated English) Mechanical vibration -- Evaluation of machine vibration by measurements on non-rotating parts -- Part 2: Land-based steam turbines and generators in excess of 50MW with normal operating speeds of 1500r/min, 1800r/min, 3000r/min and 3600r/min
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J04
Classification of International Standard 17.160
Word Count Estimation 16,166
Older Standard (superseded by this standard) GB/T 6075.2-2007
Quoted Standard GB/T 6075.1-2012; ISO 7919-2
Adopted Standard ISO 10816-2-2009, IDT
Regulation (derived from) National Standards Bulletin 2012 No. 28
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 the machine on-site evaluation of vibration intensity for all main bearing housing or bearing in the radial (ie, horizontal) and axial thrust bearing vibration measuring broadband. They include: normal steady-state operating condit

GB/T 6075.2-2012: Mechanical vibration -- Evaluation of machine vibration by measurements on non-rotating parts -- Part 2: Land-based steam turbines and generators in excess of 50MW with normal operating speeds of 1500r/min, 1800r/min, 3000r/min and 3600r/min



---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.
Mechanical vibration Evaluation of machine vibration by measurements on non-rotating parts Part 2. Land-based steam turbines and generators in excess of 50MW with normal operating speeds of 1500r/min, 1800r/min, 3000r/min and 3600r/min ICS 17.160 J04 National Standards of People's Republic of China Replacing GB/T 6075.2-2007 Mechanical vibration measurement and evaluation unit in the non-rotating member The vibration - Part 2. Power 50MW or more, Rated speed 1500r/min, 1800r/min, 3000r/min, 3600r/min land installation Turbine and generator non-rotatingparts-Part 2. Land-basedsteamturbinesandgeneratorsinexcess of50MWwithnormaloperatingspeedsof1500r/min, 1800r/min, 3000r/minand3600r/min (ISO 10816-2.2009, IDT) Issued on. 2013-03-01 2012-11-05 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 6075 "Mechanical vibration Evaluation of machine vibration measurements on non-rotating member" is divided into seven sections. --- Part 1. General; --- Part 2. more than 50MW of power, rated speed 1500r/min, 1800r/min, 3000r/min, 3600r/min Lu Mounted turbine and generator; --- Part 3. rated power above 15kW and nominal speeds range between 120r/min to 15000r/min in the Field Test The amount of industrial machinery; --- Part 4. Gas turbine sets with a sliding bearing; --- Part 5. hydroelectric and pumping plants; --- Part 6. power of more than 100kW reciprocating machine; --- Part 7. The rotary power pumps for industrial applications, including measurements on rotating shafts. This part of GB/T 26075 Part of. This section drafted in accordance with the rules of GB/T 1.1-2009 and GB/T 20000.2-2009 given. This Part replaces GB/T 6075.2-2007 "Measurement and Evaluation of the machine on the non-rotating member of the mechanical vibration - Part 2. 50MW or more, rated speed 1500r/min, 1800r/min, 3000r/min, 3600r/min land installed steam turbine, generator machine". This section compared with the GB/T 6075.2-2007, the main modifications are as follows. --- Modify the standard name from the original "Measurement and evaluation of the machine on a non-rotating member of the mechanical vibration - Part 2. 50MW Above the rated speed 1500r/min, 1800r/min, 3000r/min, 3600r/min land installed steam turbine, generator Machine "to" mechanical vibration measurement and evaluation of the machine vibration on non-rotating parts - Part 2. Power 50MW or more, the amount of Set speed 1500r/min, 1800r/min, 3000r/min, 3600r/min steam turbines and generators installed on land "; --- Increase on a constant vibration velocity criteria at low speed warning (see Appendix C); --- Modify the requirement to use a different zone boundary value example (see 4.2.2.4); --- When the new machine does not have to establish an effective baseline data, recommended its alarm steady state operation under the rated operating speed should not exceed area Boundary B/C (see 4.2.3.2); --- Increasing the stop value is set in relation to a second alarm (see 4.2.3.3); --- Increased vibration values \u200b\u200ba transient operating conditions (transient operation) during the "Shutdown amplification factor" concept, in steady conditions Prior to the establishment, it will automatically enhance the "alarm" and "Stop value" (see 4.2.4). About "Stop amplification factor" is used, 4.2.4.4 to do a more detailed description; --- Revising the acceleration, vibration speed and magnitude of a deceleration period. And to delete the previous version in Figure 2 (see 4.2.4.3). --- Modify the previous edition of "vibration amplitude" translation many will read "vibration magnitude." 2009 "Mechanical vibration measurement and evaluation of the machine vibration on non-rotating parts. This section uses the translation method using equivalent ISO 10816-2 Part 2. Power 50MW or more, rated speed 1500r/min, 1800r/min, 3000r/min, 3600r/min land installation Turbine and generator. " Consistency correspondence between this part of international documents and normative references of our files are as follows. --- GB/T 11348.2-2012 Mechanical vibration machine vibration measurement and evaluation of the rotating shaft Part 2. Power greater than 50MW, rated operating speed 1500r/min, 1800r/min, 3000r/min, 3600r/min land turbine installation And generator (ISO 7919-2.1995, MOD). This part of the National mechanical vibration, shock and condition monitoring Standardization Technical Committee (SAC/TC53) and focal points. This section is drafted. Zhengzhou Machinery Research Institute, Xi'an Thermal Power Research Institute Co., Ltd., Shanghai Power Equipment Research Institute, Harbin Institute of Electronics, Henan Electric Power Research Institute, Dongfang Electric Group, Dongfang Electrical Machinery Co., Ltd., Shanghai power plant equipment company Shanghai Generator plant. The main drafters of this section. Han Guoming, Huangrun Hua, Zhang Xueyan, Sun Qing, Zhong Su, Luo Jianbin, Chen Changlin, Hu Jianbo, Wang Tsui. This part of the standard replaces the previous editions are. --- GB/T 6075.2-2002, GB/T 6075.2-2007.

Introduction

GB/T 6075.1 is GB/T 6075 basic technical document, which sets out a non-rotating parts vibration measurement and evaluation of different types of machines General requirements for moving. GB/T 6075 gives this part of the vibration in a large turbine and generator bearing housing or supporting base measurement Specified intensity evaluation. Characterization of the vibrational state can be measured quite well in these positions. Evaluation on the basis of past experience on the proposed Criteria, such as evaluation of machine vibration state guidelines. In the steady state running conditions, the provisions of the two criteria evaluation of machine vibration. The first criterion to consider is the measured vibration magnitude; s Changes in these two criteria are vibration magnitude. In addition, transient operating conditions provides different criteria. However, the vibration on non-rotating member Move is not the sole basis for evaluation of machine vibration intensity. For large turbines and generators, it is usually based on the rotating shaft vibration measurement and evaluation Moving; rotating shaft vibration measurement and evaluation requirements see GB/T 11348.1 and GB/T 11348.2. Evaluation method proposed in this section is based on broadband measurements. However, due to the use of technological progress, or narrow-band spectrum analysis measurements increasingly The more common, especially for vibration evaluation, condition monitoring and diagnostics. Guidelines for the evaluation of these measurements is beyond the scope of this section, it They machine vibration condition monitoring in the ISO 13373 standard in detail (all parts) in. Mechanical vibration measurement and evaluation unit in the non-rotating member The vibration - Part 2. Power 50MW or more, Rated speed 1500r/min, 1800r/min, 3000r/min, 3600r/min land installation Turbine and generator

1 Scope

GB/T 6075 provisions of this part of the site evaluation machine vibration intensity for all main bearing housing or bearing shaft diameter To (ie, transverse) and thrust bearing broadband axial vibration measurements. They include. --- Normal steady-state operating conditions of vibration; --- Transients (including the raising speed or deceleration, plus initial load and load changes) when the other (non-steady-state) conditions during vibration; --- Vibrations occur during normal steady state operation of the change. This section applies to the rated speed 1500r/min, 1800r/min, 3000r/min or 3600r/min, the output power is greater than 50MW of turbines and generators installed on land, also applies to the direct coupling of the gas turbine and steam turbine (or) a generator (such as the United Combined cycle applications). Under these circumstances, the guidelines in this section apply only to the steam turbine and generator (including synchronizing clutch). ISO 7919-4 Suitable for a gas turbine and ISO 10816-4 Evaluation of vibration. These evaluation criteria in this section do not apply to the excitation of vibration in the generator stator core and the housing 2 octave electromagnetic. Values \u200b\u200bspecified in this section is not intended as the sole basis for evaluation of vibration intensity. For large turbines and generators, often used Vibration of rotating shaft evaluated. These vibration measurement requirements, see GB/T 11348.1 and GB/T 11348.2.

2 Normative references

The following documents for the application of this section is essential. For dated references, only the edition date of this Part apply to Minute. For undated references, the latest edition (including any amendments) applies to this document. GB/T 6075.1-2012 mechanical vibration measurement and evaluation of machine vibration on non-rotating parts - Part 1. General (ISO 10816-1.1995, IDT) ISO 7919-2 Mechanical vibration measurement and evaluation of the machine on the rotating shaft vibration - Part 2. power greater than 50MW, rated Speed \u200b\u200b1500r/min, 1800r/min, 3000r/min, 3600r/min land installed turbine and generator (Mechanical vibration-Evaluationofmachinevibrationbymeasurementsonrotatingshafts-Part 2. Land-based steamturbinesandgeneratorsinexcessof50MW withnormaloperatingspeedsof1500r/min, 1800r/min, 3000r/minand3600r/min)

3 Measurement Methods

Measurement methods and instrumentation used shall comply with GB/T 6075.1 and the general requirements described below. For monitoring, measurement systems should be able to measure the frequency range from 10Hz to 500Hz at least a broadband vibration. However, if the instrument is also used The diagnosis may require wider frequency range of spectral analysis, and (or). For example corresponding to the generator rotor and (or) first critical turn low-pressure rotor Speed \u200b\u200bis lower than the frequency of 10Hz when the lower limit of the linear range of the measurement system should be reduced accordingly. On special occasions, a significant low frequency vibration

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