1、BS ISO13457:2008ICS 65.060.35NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAgricultural irrigationequipment Water-driven chemicalinjector pumpsThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 August2008 B
2、SI 2008ISBN 978 0 580 58374 2Amendments/corrigenda issued since publicationDate CommentsBS ISO 13457:2008National forewordThis British Standard is the UK implementation of ISO 13457:2008.The UK participation in its preparation was entrusted to TechnicalCommittee AGE/30, Irrigation and drainage equip
3、ment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfro
4、m legal obligations.BS ISO 13457:2008Reference numberISO 13457:2008(E)ISO 2008INTERNATIONAL STANDARD ISO13457Second edition2008-08-01Agricultural irrigation equipment Water-driven chemical injector pumps Matriel agricole dirrigation Pompes doseuses moteur hydraulique pour linjection de produits chim
5、iques BS ISO 13457:2008ISO 13457:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performin
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8、tariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2008 All 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 writi
9、ng from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reservedBS ISO 1345
10、7:2008ISO 13457:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Classification. 3 5 Marking 5 6 Technical characteristics. 5 7 Mechanical and function tests 6 8 Durability . 9 9 Information to be supplied by the ma
11、nufacturer. 10 Bibliography . 12 BS ISO 13457:2008ISO 13457:2008(E) iv ISO 2008 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally c
12、arried out through ISO technical committees. Each member body 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 wor
13、k. ISO collaborates closely with the International Electrotechnical 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 Inter
14、national Standards. Draft International Standards adopted by the 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 th
15、e elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 13457 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 18, Irrigation and drainage
16、equipment and systems. This second edition cancels and replaces the first edition (ISO 13457:2000), which has been technically revised. BS ISO 13457:2008INTERNATIONAL STANDARD ISO 13457:2008(E) ISO 2008 All rights reserved 1Agricultural irrigation equipment Water-driven chemical injector pumps 1 Sco
17、pe This International Standard specifies the construction, operational requirements and test methods for water-driven chemical injector pumps (hereinafter, water-driven injector pumps). These water-driven injector pumps are used to inject chemicals into irrigation systems. The chemicals include liqu
18、id fertilizers and solutions of fertilizers and other soluble agricultural chemicals such as acids and pesticides. This International Standard is applicable to water-driven injector pumps intended to operate at water temperatures of up to 50 C and with the types and concentrations of chemicals routi
19、nely applied in irrigation. It does not cover the function of backflow prevention devices, nor is it applicable to water-driven devices for injecting chemicals into an irrigation system operating on the basis of the Venturi principle. 2 Normative references The following referenced documents are ind
20、ispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimension
21、s, tolerances and designation ISO 7005-1, Metallic flanges Part 1: Steel flanges 1)ISO 7005-2, Metallic flanges Part 2: Cast iron flanges 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 water-driven chemical injector pump hydraulic pump inten
22、ded to inject chemicals into an irrigation system, operated exclusively by the energy of irrigation water driving a hydraulic device such as a piston or turbine 3.2 nominal size conventional numerical designation used to define the size of an in-line water-driven injector pump NOTE This size is equa
23、l to the size of the connection to the irrigation system, by means of threads, flanges or other connecting devices. 1) Under revision. BS ISO 13457:2008ISO 13457:2008(E) 2 ISO 2008 All rights reserved3.3 minimum working pressure pminlowest pressure declared by the manufacturer at the inlet of a wate
24、r-driven injector pump at which the water-driven injector pump functions properly 3.4 maximum working pressure pmaxhighest pressure declared by the manufacturer at the inlet of a water-driven injector pump at which the water-driven injector pump functions properly 3.5 range of working pressures pres
25、sure range between the minimum working pressure and the maximum working pressure 3.6 drive water irrigation water used to operate an on-line water-driven injector pump 3.7 drive water flow rate rate of flow of drive water used to operate an on-line water-driven injector pump 3.8 drive water ratio ra
26、tio of one unit volume of injected chemicals to the volume of drive water required to inject the same unit volume of chemical solution 3.9 drive water flow range range of flow between minimum and maximum flows stated by the manufacturer to be appropriate for operating the pump 3.10 irrigation water
27、flow rate rate of flow of irrigation water through the irrigation pipeline serviced by the water-driven injector pump 3.11 injection rate, pumping rate rate of flow of chemical solution injected into an irrigation system during operation of a water-driven injector pump 3.12 chemical liquid fertilize
28、rs and solutions of fertilizers and other soluble agricultural chemicals such as acids and pesticides used in agriculture in liquid, solution or water soluble form, normally applied through, or otherwise injected into, irrigation systems 3.13 chemical solution water in which one or several types of
29、chemicals have been dissolved or diluted 3.14 irrigation system water flow rate sum of the irrigation water flow rate and the injection rate BS ISO 13457:2008ISO 13457:2008(E) ISO 2008 All rights reserved 33.15 mixing ratio ratio of the injection rate to the total irrigation system flow rate 3.16 st
30、roke volume pulse volume volume of chemical solution injected into an irrigation system in one water-driven injector pump cycle 3.17 proportional water-driven chemical injector pump water-driven injector pump intended to maintain a relatively constant mixing ratio throughout the period of its operat
31、ion at the irrigation water flow rates declared by the manufacturer 3.18 in-line water-driven injector pump water-driven injector pump installed in the main irrigation system piping or in bypass piping See Figure 1. 3.19 on-line water-driven injector pump water-driven injector pump installed off the
32、 main irrigation system piping and featuring four ports See Figure 2. 3.20 chemical storage tank container for storing chemicals and supplying them to a water-driven injector pump 3.21 maximum suction head maximal distance between the centreline of the outlet of the water-driven injector pump and th
33、e lowest level of the chemical in the storage tank 4 Classification 4.1 Classification according to installation type 4.1.1 In-line water-driven injector pump (Figure 1) BS ISO 13457:2008ISO 13457:2008(E) 4 ISO 2008 All rights reservedIn-line full flow In-line bypass Key 1 injector pump 4 inlet for
34、chemicals 2 inlet for irrigation water 5 valve 3 outlet for irrigation water with injected chemicals NOTE 1 The arrows denote the flow direction. NOTE 2 The injection of a chemical occurs inside the water-driven injector pump. Figure 1 In-line water-driven injector pump 4.1.1.1 Full flow installatio
35、n 4.1.1.2 Bypass flow installation 4.1.2 On-line water-driven injector pump (Figure 2) Key 1 injector pump 2 inlet for drive water 3 inlet for chemicals 4 irrigation flow 5 irrigation water with injected chemicals 6 valve 7 outlet for chemicals 8 outlet for drive water NOTE 1 The arrows denote the f
36、low direction. NOTE 2 The injection of a chemical into the irrigation water occurs outside the water-driven injector pump. The outlet for the chemical is intended to be connected to the main irrigation system piping. The drive water from the drive water outlet cannot be returned to the main irrigati
37、on system piping. NOTE 3 The drive water can be ejected from the water-driven injector pump as shown or returned to the irrigation system (see Figure 1). Figure 2 On-line water-driven injector pump 4.2 Classification according to mixing ratio 4.2.1 Proportional water-driven injector pump 4.2.1.1 Fix
38、ed mixing ratio BS ISO 13457:2008ISO 13457:2008(E) ISO 2008 All rights reserved 54.2.1.2 Adjustable mixing ratio 4.2.2 Non-proportional water-driven injector pump EXAMPLE An injection rate of 1 l/h into an irrigation water flow rate of 199 l/h gives an irrigation system water flow rate of 200 l/h, a
39、nd a mixing ratio of 1:200. 5 Marking The water-driven injector pump shall bear a clear, legible and durable marking giving the following information: a) name of manufacturer or manufacturers trade mark; b) nominal size; c) maximum working pressure (pmax); d) model number identical with that given i
40、n the manufacturers catalogue; e) year of production or a mark identifying the production series; f) arrows indicating the direction of flow of water and chemicals into and out of the water-driven injector pump. 6 Technical characteristics 6.1 General The water-driven injector pump shall employ mean
41、s, such as a vacuum breaker valve, to prevent emptying of the chemical storage tank to the irrigation system through the water-driven injector pump in the event that the pressure in the water-driven injector pump falls below the pressure in the chemical storage tank. The water-driven injector pump s
42、hall employ means, such as a check valve, to prevent irrigation water passing through the water-driven injector pump from entering the chemical storage tank. It shall be possible to disassemble and clean those parts of the water-driven injector pump subject to clogging by the chemicals or by debris
43、in the irrigation water. These parts may be fitted with a suitable filtration device accessible for the purpose of cleaning. For on-line water-driven injector pumps (4.1.2), in which there is water loss due to the ejection of drive water out of the pump, the outlet through which the drive water is e
44、jected shall be fitted with suitable means, e.g. a thread or a connector, to enable connection of a pipe for draining the outflow of drive water away from the pump. NOTE For backflow prevention, refer to the specific requirements of each country. 6.2 Materials Plastic parts of a water-driven injecto
45、r pump that are exposed to ultra-violet (UV) radiation under normal field operating conditions shall include additives to improve their resistance to UV radiation. Plastic parts that enclose waterways shall be opaque or shall be provided with an opaque cover designed to block all light from reaching
46、 clear waterway enclosures. Plastic pipes conveying chemicals may be transparent and may be exposed to light. BS ISO 13457:2008ISO 13457:2008(E) 6 ISO 2008 All rights reservedAll parts of a water-driven injector pump shall be resistant to, or protected from, those chemicals in concentrations approve
47、d or recommended for injection into irrigation systems, except as indicated in the manufacturers literature. 6.3 Connection of a water-driven injector pump to an irrigation system A water-driven injector pump shall be connected to an irrigation system by one of the following means: a) threads in acc
48、ordance with ISO 7-1, except that other threads shall be allowed, provided that a suitable adapter is supplied with each threaded connection; b) cast-iron flanges in accordance with ISO 7005-2 or steel flanges in accordance with ISO 7005-1, with flanges made of other materials required to comply wit
49、h the assembly dimensions (diameter of the distributing circle, number of holes) specified in ISO 7005-2; c) compression, grooved-end or other special fittings. 7 Mechanical and function tests 7.1 General Unless otherwise specified, perform all tests using water instead of a chemical solution as the injection liquid. Ensure that both irrigation and injection water are at a temperature between 15 C and 35 C and that they are filtered with a 120 m filter element or a filter with equivalent filtration capacity or test wi
