GB/T 13469-2021 PDF English
US$170.00 · In stock · Download in 9 secondsGB/T 13469-2021: Economical operation for centrifugal, mixed flow and axial flow pump systems Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 13469: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 13469-2021 | English | 170 |
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Economical operation for centrifugal, mixed flow and axial flow pump systems
| Valid |
| GB/T 13469-2008 | English | 359 |
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Economical operation for centrifugal, mixed flow, axial flow and vortex pump systems
| Obsolete |
| GB/T 13469-1992 | English | 279 |
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3 days
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Economical operation for industrial centrifugal, mixed flow, axial flow and vortex pump systems
| Obsolete |
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GB/T 13469-2021: Economical operation for centrifugal, mixed flow and axial flow pump systems---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT13469-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.010
F 01
Replacing GB/T 13469-2008
Economical Operation for Centrifugal, Mixed Flow and
Axial Flow Pump Systems
离心泵, 混流泵与轴流泵系统经济运行
ISSUED ON: MAY 21, 2021
IMPLEMENTED ON: DECEMBER 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 6
4 Basic Requirements for Economical Operation for Pump Systems ... 6
4.1 Principal requirements ... 6
4.2 Requirements for equipment selection of the pump systems ... 6
4.3 Requirements for installation, commissioning and acceptance of the pump
systems ... 7
4.4 Reasonable use requirements of pump systems ... 8
4.5 Management of economical operation for pump systems ... 10
5 Judgment and Evaluation Method of Economical Operation for Pump
Systems ... 11
5.1 The calculation and judgment program of the economical operation for pump
systems ... 11
5.2 Calculation ... 12
5.3 Judgment and evaluation of equipment ... 13
5.4 Judgment and evaluation of the unit ... 14
5.5 Judgment and evaluation of the system ... 14
6 Test Method for Economical Operation for Pump Systems ... 14
6.1 Test conditions ... 14
6.2 Requirements for measuring instruments ... 14
6.3 Measurement method ... 15
6.4 Test data processing ... 15
7 Energy-Saving Management Measures of Economical Operation for Pump
Systems ... 15
Economical Operation for Centrifugal, Mixed Flow and
Axial Flow Pump Systems
1 Scope
This Standard specifies the basic requirements, judgment and evaluation methods,
test methods and energy-saving management measures of the economical operation
for centrifugal pumps, mixed flow pumps and axial flow pump systems driven by AC
motors.
This Standard is applicable to centrifugal pumps, mixed flow pumps and axial flow
pump systems driven by AC motors in use. The design of reconstruction, expansion
and new centrifugal pump, mixed flow pump and axial flow pump system can be
implemented by reference.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) is applicable to this document.
GB/T 9481 Axial-Flow Pump of Medium-Small Size - Types and Basic Parameters
GB/T 13007 Centrifugal pump - Efficiency
GB/T 13008 Technical Specification for Mixed and Axial Flow Pumps
GB/T 13466 The General Principles of Economic Operation for AC Driven Fan
(Pump Air Compressor) System
GB/T 13468 Measurement and Calculation Methods of Electric Energy Balance
for Pumped Liquid Transportation Systems
GB/T 16666 Monitoring and Testing for Energy Saving of Motor-Pump Liquid
Transport System
GB 17167 General Principle for Equipping and Managing of the Measuring
Instrument of Energy in Organization of Energy Using
4.2.4 The selection of the pump shall meet the following requirements:
a) Satisfy the use head and flow of the system;
b) The selection of the pump shall comply with the provisions of GB/T 9481, GB/T
13007, GB/T 13008 and other relevant standards;
c) The design operating point shall be in the economic working area specified by
the pump manufacturer.
4.2.5 Under a variety of working conditions and production process conditions, the
matching pump shall be selected according to the system load characteristics. The
selection of multiple pumps for combined operation shall meet the requirements of
series and parallel technical conditions.
4.2.6 When multiple pumps are used in combined operation, on the basis of satisfying
process, safe and reliable operation, high-efficiency pumps shall be used to bear the
basic load, so as to minimize the power consumption of the unit liquid.
4.2.7 When multiple units are operated in parallel, pumps with equal head
characteristics shall be used. When operating in series, pumps with equal flow
characteristics shall be used. When speed control devices are used for control and
adjustment, the pump series/parallel operation rules shall be satisfied; and the series
and parallel operation mode in the high-efficiency energy-saving zone of the variable
frequency pumps should be used.
4.2.8 According to the requirements of the production process, reasonably determine
the pipe material and pipe diameter of the pipe network system.
4.2.9 The pipe network configuration plan and transportation distance shall be
reasonably determined under the conditions of optimizing the production process.
4.3 Requirements for installation, commissioning and acceptance of the pump
systems
4.3.1 The installation shall be carried out by a dedicated installation technician in
accordance with the installation provisions of the manufacturer.
4.3.2 The determination of the installation site and location shall fully consider the
convenience of operation and management; and reserve necessary maintenance
space.
4.3.3 After installation of the pump system, online debugging shall be carried out to
check whether the pump is out of the high-efficiency zone where the pump is allowed
to operate; and perform the test in accordance with Clause 6.
the inclination shall be no less than 0.5%;
c) The suction pipeline layout and flow rate of large centrifugal pumps, axial flow
pumps and mixed flow pumps shall be selected so that the suction medium does
not produce vortex, cavitation, etc.;
d) The bottom valve should not be used in the suction pipeline;
e) In order to ensure the suction performance of the pump, the medium flow rate of
the suction pipe for conveying clean water at room temperature shall be less
than 2m/s.
4.4.2.10 The discharge pipeline shall meet the following requirements:
a) For the connection between the branch pipe and the main pipe, an oblique
connection should be used instead of a straight connection;
b) No additional resistance valve or micro resistance valve should be used;
c) The discharge pipeline shall adopt economical flow rate, and the flow rate of
clean water at room temperature shall be 2m/s~3m/s.
4.4.3 Economical operation of the system
4.4.3.1 Applicable control and regulation systems shall be adopted according to the
user's flow and head requirements.
4.4.3.2 For long running time, large load changes and discontinuous operation
conditions, a regulating device system including a variable frequency speed regulating
device should be used. The application technical conditions of the variable frequency
speed regulating device shall comply with the provisions of GB/T 21056.
4.4.3.3 When the flow rate variation is less than 20%, or the annual operating time is
less than 4000h, the following flow adjustment methods should be adopted, including:
a) The throttling method can be used for small centrifugal pumps;
b) For mixed flow pumps and axial flow pumps, the flow rate and head can be
adjusted through changing the installation angle of the blades or adjusting the
inlet guide blades;
c) When the change range of flow rate is less than 10%, the variable flow constant
pressure method shall be adopted;
d) Voltage reduction and power saving technology can be used when the motor is
lightly loaded.
4.4.3.4 The equipment and pipe network that transport high (low) temperature medium
4.5.2.3 For pumps with a capacity of 100kW and above, economic indicators of the
systems should be tested regularly.
4.5.3 Requirements for finding and troubleshooting faults
4.5.3.1 Once a failure occurs, the cause of the failure shall be analysed and eliminated
in time; and the results of the failure shall be recorded in detail.
4.5.3.2 The following should be recorded when the system fails:
a) Failure overview (time of failure, description of failure and failure phenomenon,
working conditions and environmental conditions at the time of failure, name of
the person who discovered the failure);
b) The nature of the failure;
c) The fault characteristics of the product performance (the measured value of the
fault parameter and the minimum required value of the parameter);
d) Analytical opinions and suggested corrective measures related to failures.
4.5.3.3 The following failure maintenance information shall be recorded:
a) Failure verification (the used instruments and methods, description of
observation results);
b) Repair instructions (the taken measures, repair date, name of maintenance
personnel);
c) Description of the replaced parts (part name, model, supplier, failure cause and
classification opinions).
5 Judgment and Evaluation Method of Economical
Operation for Pump Systems
5.1 The calculation and judgment program of the economical operation for pump
systems
5.1.1 Calculation procedures
The calculation of the relevant indicators of the economical operation for the pump
system shall be carried out according to the following procedures:
a) Calculate the operating efficiency of motors, pumps and other equipment in use
according to 5.2.1;
5.4 Judgment and evaluation of the unit
During the recording period, compare the actually-measured operation efficiency of
unit with the rated efficiency of the unit. If the ratio is greater than 0.85, the unit is
deemed to be operating economical; if the ratio is between 0.70 and 0.85, the unit is
deemed to be operating reasonably; if the ratio is less than 0.70, the unit is deemed to
be operating uneconomical.
5.5 Judgment and evaluation of the system
5.5.1 If all equipment and units in the system meet the economical operation
requirements specified in 5.3 and 5.4 at the same time, then the system shall be
considered to be operating economical. If all equipment and units in the system meet
the reasonable operation requirements specified in 5.3 and 5.4, and there are no
uneconomical operation items, then the system shall be considered to be operating
reasonable. If one of all equipment and units in the system is judged to be
uneconomical, then the system shall be considered to be operating uneconomical.
5.5.2 If the power consumption per ton by 100 meters of liquid transported by the
system meets the qualified index requirements in GB/T 16666, then the system shall
be considered to be operating economical. If it does not meet the qualified index
requirements in GB/T 16666, the system shall be considered to be operating
uneconomical.
6 Test Method for Economical Operation for Pump
Systems
6.1 Test conditions
The test shall be carried out under the following conditions:
a) No changes shall be made to the pump system before the test;
b) The test shall be carried out under typical working conditions;
c) The system shall be tested under stable voltage, temperature and pressure.
6.2 Requirements for measuring instruments
6.2.1 The measurement range of the measuring instrument shall meet the
measurement requirements of the relevant parameters of the pump system; and it
should be ensured that the usual measured value is within the range of 1/2 ~ 2/3 of the
relevant instrument.
6.2.2 The accuracy of measuring instruments within the used range shall meet the
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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