1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 15886-1:2012Agricultural irrigationequipment SprinklersPart 1: Definition of terms and classificationBS ISO 15886-1:2012 BRITISH STANDARDNational forewordThis British Stan
2、dard is the UK implementation of ISO 15886-1:2012.It supersedes BS ISO 15886-1:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AGE/30, Irrigation and drainage equipment.A list of organizations represented on this committee can beobtained on request
3、 to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 70818 3ICS 65.060.35Compliance with a British Stand
4、ard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2012.Amendments issued since publicationDate Text affectedBS ISO 15886-1:2012 ISO 2012Agricultural irrigation equipment Sprinklers Part 1
5、: Definition of terms and classificationMatriel agricole dirrigation Asperseurs Partie 1: Dfinition des termes et classificationINTERNATIONAL STANDARDISO15886-1Second edition2012-03-01Reference numberISO 15886-1:2012(E)BS ISO 15886-1:2012ISO 15886-1:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PR
6、OTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs
7、member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 15886-1:2012ISO 15886-1:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 S
8、cope 12 Terms and definitions . 13 Classification 63.1 General . 63.2 Physical factors . 63.3 Characteristics of water spray . 83.4 Mechanism for water distribution operation 113.5 Mechanism for sealing .133.6 Intended use .133.7 Additional functions incorporated into the sprinkler 14Bibliography .1
9、6BS ISO 15886-1:2012ISO 15886-1:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body
10、 interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotec
11、hnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by th
12、e technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.
13、 ISO shall not be held responsible for identifying any or all such patent rights.ISO 15886-1 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 18, Irrigation and drainage equipment and systems.This second edition cancels and replaces
14、the first edition (ISO 15886-1:2004), which has been technically revised.ISO 15886 consists of the following parts, under the general title Agricultural irrigation equipment Sprinklers: Part 1: Definition of terms and classification Part 3: Characterizing of distribution and test methodsiv ISO 2012
15、All rights reservedBS ISO 15886-1:2012INTERNATIONAL STANDARD ISO 15886-1:2012(E)Agricultural irrigation equipment Sprinklers Part 1: Definition of terms and classification1 ScopeThis part of ISO 15886 defines terms related to irrigation sprinklers and specifies the classification of sprinklers accor
16、ding to the following categories: physical factors; characteristics of the water spray; the mechanism for operation and water distribution; the mechanism for sealing; the intended use; additional functions incorporated into the sprinkler. The scope is intentionally broad to cover the widest possible
17、 range of sprinkler construction, performance, and intended-use alternatives. 2 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.2.1accumulatorpressure accumulatorhydraulic device that stores fluid under pressure and cushions shock waves2.2anti-drain
18、valvevalve designed to remain closed whenever the system pressure does not exceed a pre-set value and to open for higher pressures2.3chemigationapplication of chemicals through irrigation systems2.4compression-disk nozzlenozzle fitted with an elastic disk that flexes under pressure so as to alter th
19、e hydraulic properties of the nozzle2.5cross vaneflow conditioning vanes, the design of which tends to trap waterborne contaminants2.6constant-acceleration nozzlenozzle, the shape of which changes gradually and smoothly so as to cause a constant rate of acceleration in the flow passages2.7constant-f
20、low nozzlenozzle, the internal geometry of which does not vary under fixed operating conditions thus maintaining constant hydraulic properties2.8constricting-flow nozzlenozzle fitted with elastic sleeves that alter the hydraulic properties of the nozzle in response to changes in operating pressure I
21、SO 2012 All rights reserved 1BS ISO 15886-1:2012ISO 15886-1:2012(E)2.9continuous-move irrigation machineirrigation machine in which the position of sprinklers is fixed on a supply line which moves continuously in a particular directionEXAMPLES Centre pivot irrigation machine, moving lateral irrigati
22、on machine, traveller irrigation machine.2.10controlled-acceleration nozzlenozzle, the shape of which changes gradually and smoothly so as to cause a specific rate or rates of acceleration in the flow passages2.11customized nozzlenozzle, the design of which meets specified hydraulic criteria for acc
23、eleration, turbulence and separation2.12element parallel to water flowupstream flow conditioning component, the centreline of which is parallel to the nozzle centreline2.13element not parallel to water flowupstream flow conditioning component, the centreline of which is at an angle to the nozzle cen
24、treline2.14spray elevationheight to which a spray rises above a horizontal plane passing through the elevation of the nozzle2.15finger spraystream of water directed either as a cohesive or continuous jet or as a concentration of individual drops2.16flexing-orifice nozzlenozzle fabricated from elasti
25、c materials that flex under pressure so as to alter the hydraulic properties of the nozzle2.17flow-rate change mechanismmechanism provided that automatically changes hydraulic properties during operation2.18fluidic devicedevice (such as an amplifier or control) that depends for operation on the pres
26、sures and flows of a fluid in precisely shaped channelsNOTE Definition based on that for “fluidic” from the Free Merriam-Webster Dictionary, accessed on 2012-01-24. Available from: http:/www.merriam- nozzlenozzle, the shape of which changes gradually and smoothly so as to cause a gradual, usually li
27、near, acceleration in the flow passages2.20groove along flow passagesrifling along flow passagesflow conditioning element designed to modify hydraulic properties of the flow passage thus increasing flow passage turbulence2 ISO 2012 All rights reservedBS ISO 15886-1:2012ISO 15886-1:2012(E)2.21impact
28、armbalanced arm of a sprinkler rotating about a vertical axis (usually corresponding to the sprinkler axis) that momentarily intercepts and deflects a portion of the jet so as to provide the torque required to rotate the water distribution component of the sprinkler2.22impulse armbalanced arm of a s
29、prinkler rotating about a horizontal axis that momentarily intercepts and deflects a portion of the jet so as to provide the torque required to rotate the water distribution component of the sprinkler2.23jet-spraystream of water issuing from an orifice under pressure2.24location of maximum trajector
30、y heightradial distance from the sprinkler axis at which the maximum trajectory height is reached2.25maximum trajectory heightmaximum height, above a sprinkler or a sprayer of the trajectory of the principal water stream discharged from the sprinkler nozzle or sprayer operating at test pressure2.26m
31、echanically-controlled stream breakup sprinklersprinkling device with a capability for controlling stream breakup in a series of mechanically pre-set repeatable cyclic patterns2.27moveable fixed-grid agricultural systemirrigation system in which sprinkler set positions are nominally fixed by a suppl
32、y pipeline, a hydrant, infield access or other infrastructure constraintsEXAMPLES Hand-move system, wheel-move system.2.28moving sheetsheet spray which moves in a linear fashion or which rotates2.29no-variation sprinkler systemssprinkler systems that operate on mechanically controlled repeatable cyc
33、les2.30no-statistical-variation sprinkler systemssprinkler systems that operate without fixed mechanical control, but that produce statistically repeatable results2.31nominal sizenumerical designation used to refer to the size of a sprinkler which is identical to the nominal diameter of a pipe to wh
34、ich the sprinkler is intended to be connected directly2.32nozzleaperture or adjutage in a sprinkler through which water is discharged2.33off-axis-bore nozzlenozzle in which the orifice centreline does not correspond to the nozzle centreline ISO 2012 All rights reserved 3BS ISO 15886-1:2012ISO 15886-
35、1:2012(E)2.34open vane nozzlenozzle with flow conditioning vanes that are designed to shed waterborne contaminants2.35opposed reaction-force driven sprinkling devicebalanced reaction-force driven sprinkling devicesprinkling device driven by hydraulic reaction forces from more than one jet acting in
36、opposite directions such that the rotational torque is balanced to provide speed control and rotational stability2.36pop up/pop down mechanismmechanism within the sprinkler that automatically raises the nozzle height to improve crop clearance when the system is pressurized and automatically lowers t
37、he nozzle to the original position when the system is de-pressurized2.37ring orificedisk orificeaperture in a ring or disk placed in the nozzle of a sprinkler normal to the direction of flowNOTE The ring or disk is readily replaceable to allow for change in the hydraulic performance of the sprinkler
38、.2.38rotating sprinklerdevice which by its rotating motion around its vertical axis distributes water over a circular area or part of a circular area2.39sheet spraywater spread out into a flat plane-like sprayEXAMPLE Spray that results when water impinges on a deflector plate.2.40space-filling fog s
39、prayemission from an orifice which fills the air with a “cloud” of ultra-fine droplets the size of which may be specified usually for the purpose of crop cooling2.41space-filling mist sprayemission from an orifice which fills the air with a “cloud” of very fine droplets the size range of which may b
40、e specified2.42space-filling rain sprayemission from an orifice which fills the air with a volume of relatively medium to coarse drops the size range of which may be specified2.43space-filling sprayemission from an orifice which fills the air with a “cloud” of relatively fine droplets the size range
41、 of which may be specified2.44space-filling spray combination sprinklersprinkling device combining a number of space filling spray types2.45adjustable-speed sprinklersprinkler that provides mechanically adjustable speed control features4 ISO 2012 All rights reservedBS ISO 15886-1:2012ISO 15886-1:201
42、2(E)2.46splash re-direct mechanismtube or deflection device mounted on an arm driven sprinkler to re-direct the drive action portion of jet in a direction generally parallel to the main jet2.47sprinklerwater distribution device of a variety of sizes and types for example impact sprinklers, fixed noz
43、zle, sprayers and irrigation guns2.48sprayrelease of water from a sprinkler2.49stationary fixed-grid systemirrigation system in which sprinkler set positions are rigidly fixed by semi-permanent or permanently installed lateral pipelinesEXAMPLE Portable solid-set irrigation system, buried irrigation
44、system.2.50straight-bore nozzlenozzle utilizing a cylindrical cross-section approaching the orifice, normally no vena contracta is associated with this design2.51taper-bore nozzlenozzle utilizing a conical section approaching the orifice2.52trajectory angleangle above the horizontal plane of the wat
45、er stream or spray discharged from a sprinkler nozzle or a sprayer operating at test pressure2.53trajectory angle change mechanismmechanism that automatically changes the trajectory angle during operation2.54valve-in-headvalve mechanism fabricated as an integral part of the sprinkler that adds featu
46、res independent of the sprinkling operation, to control flow rate2.55variable-cycle sprinklersprinkler that operates on fixed mechanically controlled repeatable sequencesNOTE Sequences consist of a number of cycles exhibiting one set of hydraulic properties followed by a number of cycles exhibiting
47、a second set of hydraulic properties.2.56variable-geometry nozzlenozzle fabricated to a non-regular shape for a specific purpose such as pressure of flow regulation or jet breakup2.57variable internal geometry nozzlenozzle, the performance of which is significantly affected by the upstream flow pass
48、age components ISO 2012 All rights reserved 5BS ISO 15886-1:2012ISO 15886-1:2012(E)2.58variable-performance nozzlenozzle, the internal geometry of which varies in some repetitive manner under fixed operating conditions to produce variable hydraulic properties2.59wobbling sprayernutating sprayerwobbl
49、eroff-centre rotary-action sprinkler3 Classification3.1 GeneralSprinklers shall be classified according to the following major categories and their particular characteristics, as specified in 3.2 to 3.7. The intention is to cover all possible sprinkler types, by classifying them according toa) physical factors, such as size, materials, operating pressure,b) characteristics of the water spray, e.g. type of spray, area of coverage,c) the mechanism for operation and water distribution,
