GB/T 15487-2015 English PDF

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GB/T 15487-2015: Methods of flow measurement for displacement compressor
Status: Valid

GB/T 15487: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15487-2015	819	Add to Cart	6 days	Methods of flow measurement for displacement compressor	Valid
GB/T 15487-1995	RFQ	ASK	6 days	Methods of flow measurement for displacement compressor	Obsolete

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Basic data

Standard ID: GB/T 15487-2015 (GB/T15487-2015)
Description (Translated English): Methods of flow measurement for displacement compressor
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J72
Classification of International Standard: 23.140
Word Count Estimation: 39,394
Date of Issue: 2015-10-09
Date of Implementation: 2016-06-01
Older Standard (superseded by this standard): GB/T 15487-1995
Regulation (derived from): National Standard Announcement 2015 No.31
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

GB/T 15487-2015: Methods of flow measurement for displacement compressor

---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.
Methods of flow measurement for displacement compressor ICS 23.140 J72 National Standards of People's Republic of China Replace GB/T 15487-1995 Volumetric Compressor Flow Measurement Method 2015-10-09 released 2016-06-01 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 1 Scope 1 2 normative reference document 1 3 Terms and definitions 1 4 symbols and code 2 5 General 4 General requirements for measurement 7 Measure the compressor flow with the ISA1932 nozzle plus the rectifier measuring device 7.1 Measuring device 7 7.2 Installation requirements 11 7.3 Measurements 11 7.4 Flow calculation 13 7.5 Uncertainty 14

8 Measure the compressor flow with the ASME nozzle measuring device

8.1 Measuring device 14 8.2 Installation requirements 16 8.3 Measurements 17 8.4 Flow calculation 17 8.5 Uncertainty

9 Measure the air compressor flow rate in a critical flow condition with a circular venturi nozzle measuring device

9.1 Measuring device 19 9.2 Measurements 21 9.3 Flow calculation 21 9.4 Uncertainty 21 Estimation of Uncertainty in Flow Measurement of Compressors 10.1 General 22 10.2 Calculation of Uncertainty 22 10.3 Practical calculation of flow measurement uncertainty Uncertainty of independent quantity measurement Appendix A (Normative Appendix) Measuring the volume of the compressor by the filling tank method A.1 Overview 25 A.2 measuring device 25 A.3 Measurement step 25 A.4 Flow calculation 26 Appendix B (normative appendix) Measuring the volume of the compressor by the bottle method 27 B.1 Overview 27 B.2 measuring device 27 B.3 measurement step 27 B.4 Flow calculation 28 Appendix C (normative) Measure the compressor volumetric flow with gas cabinet method C.1 Overview 29 C.2 measuring device 29 C.3 measurement step 29 C.4 Flow calculation 30 Appendix D (normative) Measure the compressor volume flow with a flow meter D.1 Overview 31 D.2 measuring device 31 D.3 measurement 31 D.4 Flow Calculation 31 Appendix E (informative) Pipe wall equivalent roughness K value Example 32

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 15487-1995 "Volumetric Compressor Flow Measurement Method". This standard compared with GB/T 15487-1995, in addition to editorial changes in the main technical changes are as follows. - Removed secondary device terminology (see 4.2 of.1995); - the terms of uncertainty were removed (see 4.14 of.1995); --- modified part of the provisions of Table 2, and increased the internal cooling liquid spray rotary compressor spray temperature, absolute inspiratory humidity and exhaust pressure (See 6.1 and Table 2, version 6.2 and table 2 of.1995); - modified the size of the ISA1932 nozzle (see 7.1.2.2,.1995, 7.1.2.2); --- modified the size of the injection hole of the ISA1932 nozzle (see 7.1.2.2, 7.1.2.2.5 of.1995); --- modified with the ISA1932 nozzle plus rectifier measuring device to measure the compressor flow method in the nozzle upstream temperature calculation method (See 7.4.1 in.1995, 7.4.1); - Excessive variable E = (1 - β4) -1/2 (see 7.4.3 and 7.4.5 in.1995); - modified the U-pipe water column pressure gauge size requirements (see 8.3.1.2,.1995 edition 8.3.1.2); Amend the position of the control pressure valve in the measurement procedure in Appendix B (normative) (see B.3.1,.1995 B2.1). This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Standardization Technical Committee for Compressors (SAC/TC145). The drafting unit. Hefei General Machinery Research Institute, Hefei General Mechanical and Electrical Products Testing Institute Co., Ltd., Hefei General Environmental Control Technology Limited liability company. The main drafters of this standard. Xiao spear, Bao Yang Yang, Ren Fang. This standard replaced the previous version of the standard release. --- GB/T 15487-1995. Volumetric Compressor Flow Measurement Method

1 Scope

This standard specifies the measurement device and measurement method for the displacement of the displacement compressor (hereinafter referred to as "compressor"). This standard applies to the measurement of compressor flow. The measurement of the flow rate in the gas pipe can also be made with reference. This standard does not apply to the pipeline flow instability, gas phase change, the gas has solid or liquid and other material precipitation and upstream of the throttle The gas is measured in the case of sound or supersonic flow.

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. GB/T 2624 (all parts) Measure the full flow of fluid with a differential pressure device installed in a circular cross-section pipe Acceptance test of GB/T 3853 volumetric compressor GB/T 4975 General terms for volumetric compressors JB/T 9107 Reciprocating Compressor Terminology

3 terms and definitions

GB/T 4975, JB/T 9107 and GB/T 2624, as well as the following terms and definitions apply to this document. 3.1 One device directdevice Directly installed in the pipeline of the measured fluid, used to measure the flow of fluid devices, including the pressure port. 3.2 Throat throat Throttle element opens at the smallest cross section. 3.3 Nozzle An apparatus consisting of a retraction inlet portion and a throat connected thereto. 3.4 Arc Venturi Nozzle arcVenturinozzle And a means for connecting the throat and the conical extension by the contraction inlet of the circular rotary surface. 3.5 Nozzle diameter Nozzle throat diameter. 3.6 Pipe wall take pressure port The annular slit or round hole drilled in the pipe wall has its inner edge flush with the inner wall of the pipe. ......

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