1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 22968:2010Forced draught oil burnersBS ISO 22968:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 22968:2010.The UK participatio
2、n in its preparation was entrusted to TechnicalCommittee GSE/27, Automatic gas and oil burners.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsibl
3、e for its correctapplication. BSI 2010ISBN 978 0 580 55430 8ICS 27.060.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2010.Amendments issued since p
4、ublicationDate Text affectedBS ISO 22968:2010Reference numberISO 22968:2010(E)ISO 2010INTERNATIONAL STANDARD ISO22968First edition2010-11-01Forced draught oil burners Brleurs air souffl pour combustibles liquides BS ISO 22968:2010ISO 22968:2010(E) PDF disclaimer This PDF file may contain embedded ty
5、pefaces. 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 performing the editing. In downloading this file, parties accept therein the responsibility of not inf
6、ringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were op
7、timized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved.
8、 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 member body in the country of the requester.
9、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 2010 All rights reservedBS ISO 22968:2010ISO 22968:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword .v Introductio
10、nvi 1 Scope1 2 Normative references1 3 Terms and definitions .2 3.1 General .2 3.2 Fuel mass flow rate and performance.3 3.3 Test rig and combustion chamber.4 3.4 Composition of the gaseous combustion products 5 3.5 Adjustment, control and safety devices .6 3.6 Sequencing times7 3.7 Diagrams 9 4 Cla
11、ssification of oil burners .9 4.1 General .9 4.2 Types of atomization.9 4.3 Automatic oil burner control methods9 4.4 Means of ignition.10 5 Constructional and operational requirement .10 5.1 Construction and operation .10 5.2 Safety devices20 5.3 Spurious light signals.22 5.4 Combustion22 5.5 Combu
12、stion product quality.23 5.6 Combustion quality of the combustion products for other liquid fuels 24 5.7 Excess air ratio24 5.8 Operational requirements.24 6 Test methods .26 6.1 General .26 6.2 Ambient test conditions26 6.3 Combustion test chamber 26 6.4 Measuring equipment .34 6.5 Measuring accura
13、cies.34 6.6 Test conditions 35 6.7 Test programme 36 6.8 Replacement of individual parts and equivalent components .43 6.9 Electrical safety .43 7 Conformity evaluation.44 8 Marking, labelling and packaging44 8.1 General .44 8.2 Data plate .44 8.3 Other markings 44 8.4 Instructions for application,
14、installation, commissioning, adjustment, maintenance and operation 45 8.5 Marking on the packaging 46 Annex A (normative) Smoke number47 Annex B (normative) Emission measurements and corrections.48 BS ISO 22968:2010ISO 22968:2010(E) iv ISO 2010 All rights reservedAnnex C (informative) Conversion fac
15、tors 50 Annex D (normative) FID measuring method for recording the unburnt hydrocarbons 52 Annex E (informative) Conformity evaluation . 53 Annex F (informative) Examples of equipping of burners . 56 Annex G (informative) Additional recommendations for specific applications. 60 Annex H (informative)
16、 Air-proving device check 62 Annex I (normative) Regional requirements specific to European countries 63 Annex J (normative) Requirements specific to Japan . 64 Annex K (normative) Requirements specific to Australia 66 Annex L (normative) Requirements specific to Korea . 67 Annex M (normative) Requi
17、rements specific to the USA. 69 Annex N (informative) Electrical interfaces for burners. 71 Bibliography. 75 BS ISO 22968:2010ISO 22968:2010(E) ISO 2010 All rights reserved vForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
18、member bodies). The work of preparing International Standards is normally carried 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, govern
19、mental and non-governmental, in liaison with ISO, also take part in the work. 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 Di
20、rectives, Part 2. The main task of technical committees is to prepare International 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 b
21、odies casting a vote. Attention is drawn to the possibility that some of the 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 22968 was prepared by Technical Committee ISO/TC 109, Oil and gas burners.
22、BS ISO 22968:2010ISO 22968:2010(E) vi ISO 2010 All rights reservedIntroduction This International Standard is primarily intended for application to automatic forced draught oil burners having a combustion air fan, operated with liquid fuels and intended to be marketed as a complete assembly. Many bu
23、rners are designed to operate using a wide range of fuel oils with little or no modification other than adjustment of the air supply. When applying the requirements specific to a country or region, which are given in the various annexes, it is essential that a level of safety be ensured that is at l
24、east equivalent to that provided for by the requirements of the main body of this International Standard. BS ISO 22968:2010INTERNATIONAL STANDARD ISO 22968:2010(E) ISO 2010 All rights reserved 1Forced draught oil burners 1 Scope This International Standard specifies the terminology, test procedures
25、and general requirements for the construction and operation of automatic forced draught oil burners supplied with a fuel having a viscosity at the burner inlet of 1,6 mm2/s (cSt) to 6 mm2/s (cSt) at 20 C or higher, boiling petroleum in accordance with ISO 8217-based first raffinates, and the provisi
26、on of related control and safety devices. It is applicable to the following: a) automatic oil burners (hereinafter called “burners”) fitted with a combustion air fan and equipped as described in Clause 5, intended for use in appliances of different types and operated with fuel oils; b) single burner
27、s with a single combustion chamber, for which, where such burners are fitted to a single appliance, the requirements of the relevant appliance standard also apply; c) single-fuel and dual-fuel burners when operating only on oil; d) the oil function of dual-fuel burners designed to operate simultaneo
28、usly on gaseous and liquid fuels, which, for the former, the requirements of ISO 22967 also apply. It is not applicable to burners used in direct fired processes either with defined combustion chamber applications or where the combustion chamber wall surface temperature is greater than 750 C or the
29、heat-transfer medium temperature is greater than 500 C. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references only the edition cited applies. For undated references the latest edition of the referenced document (includi
30、ng any amendments) applies. ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation ISO 1129, Steel tubes fo
31、r boilers, superheaters and heat exchangers Dimensions, tolerances and conventional masses per unit length ISO 3183, Petroleum and natural gas industries Steel pipe for pipeline transportation systems ISO 6806, Rubber hoses and hose assemblies for use in oil burners Specification ISO 7005 (all parts
32、), Pipe flanges ISO 8217, Petroleum products Fuels (class F) Specifications of marine fuels BS ISO 22968:2010ISO 22968:2010(E) 2 ISO 2010 All rights reservedISO 9329-1, Seamless steel tubes for pressure purposes Technical delivery conditions Part 1: Unalloyed steels with specified room temperature p
33、roperties ISO 9330-1, Welded steel tubes for pressure purposes Technical delivery conditions Part 1: Unalloyed steel tubes with specified room temperature properties ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories ISO 22967, Forced draught gas burners I
34、SO 23550, Safety and control devices for gas burners and gas-burning appliances General requirements ISO 23552-1, Safety and control devices for gas and/or oil burners and gas and/or oil appliances Particular requirements Part 1: Fuel/air ratio controls, electronic type ISO 23553-1, Safety and contr
35、ol devices for oil burners and oil-burning appliances Particular requirements Part 1: Shut-off devices for oil burners IEC 60204-1, Safety of machinery Electrical equipment of machines Part 1: General requirements IEC 60335-1:2001, Household and similar electrical appliances Safety Part 1: General r
36、equirements, as amended 2004 and 2006 IEC 60335-2-102:2004, Household and similar electrical appliances Safety Part 2-102: Particular requirements for gas, oil and solid-fuel burning appliances having electrical connections IEC 60529, Degrees of protection provided by enclosures (IP code) IEC 60730-
37、2-5:2004, Automatic electrical controls for household and similar use Part 2-5: Particular requirements for automatic electrical burner control systems IEC 60747-5-2, Discrete semiconductor devices and integrated circuits Part 5-2: Optoelectronic devices Essential ratings and characteristics IEC 609
38、47-5-1, Low-voltage switchgear and controlgear Part 5-1: Control circuit devices and switching elements Electromechanical control circuit devices IEC 61810-1, Electromechanical elementary relays Part 1: General requirements 3 Terms and definitions For the purposes of this document, the following ter
39、ms and definitions apply. 3.1 General 3.1.1 forced draught burner burner in which the total air for combustion is supplied by means of a fan 3.1.2 automatic forced draught burner burner that is fitted with an automatic ignition, flame monitoring and burner control devices where the ignition, flame m
40、onitoring and the on/off switching of the burner occur automatically NOTE The heat input of the burner can be adjusted during operation either automatically or manually. BS ISO 22968:2010ISO 22968:2010(E) ISO 2010 All rights reserved 33.1.3 dual-fuel burner burner in which both gaseous and liquid fu
41、els can be burnt either simultaneously or in succession 3.1.4 combustion chamber part of the appliance in which the combustion takes place 3.1.5 burner head device for mixing fuel and air comprising, for example, a stabilizing disc and nozzle, that keeps the flame in its safe position during operati
42、on of the burner 3.1.6 heat-transfer medium gaseous or liquid substance for the transport of heat energy from the appliance 3.1.7 appliance heat generator into which the burner fires having a combustion chamber and heat exchanger used to indirectly transmit the heat input from the burner combustion
43、gases to the heat-transfer medium 3.2 Fuel mass flow rate and performance 3.2.1 mass flow rate qmmass of oil consumed by the burner in unit time during continuous operation NOTE It is expressed in kilograms per hour (kg/h) or grams per hour (g/h). 3.2.2 maximum mass flow rate mass of fuel consumed d
44、uring one hour at the highest mass flow rate stated by the manufacturer NOTE It is expressed in kilograms per hour (kg/h). 3.2.3 minimum mass flow rate mass of fuel consumed during one hour at the lowest mass flow rate stated by the manufacturer NOTE It is expressed in kilograms per hour (kg/h). 3.2
45、.4 calorific value quantity of heat produced by the combustion, at a constant pressure equal to 0,101 325 MPa, of unit volume or mass of fuel oil, the constituents of the combustible mixture being taken at reference conditions and the products of combustion being brought back to the same conditions
46、NOTE 1 A distinction is made between a) the superior calorific value (Hs) in which the water produced by combustion is assumed to be condensed, and b) the inferior calorific value (Hi) in which the water produced by combustion is assumed to be in the vapour state. NOTE 2 It is expressed in megajoule
47、s per kilogram (MJ/kg). NOTE 3 See ISO 14532. BS ISO 22968:2010ISO 22968:2010(E) 4 ISO 2010 All rights reserved3.2.5 heat input QFamount of heat as a function of time released by the burner at a given mass flow rate NOTE It is expressed in kilowatts (kW) and calculated as the oil flow rate x lower c
48、alorific value (qVoHi) of the fuel. 3.2.6 maximum heat input QFmaxmaximum heat input of the burner as stated by the manufacturer NOTE It is expressed in kilowatts (kW). 3.2.7 minimum heat input QFminminimum heat input of the burner as stated by the manufacturer NOTE It is expressed in kilowatts (kW)
49、. 3.2.8 start heat input Qsmaximum heat input at the start of ignition as a percentage of heat input (QF) 3.2.9 nominal heat input QFNvalue of the heat input declared by the manufacturer NOTE 1 It is expressed in kilowatts (kW). NOTE 2 Fixed heat input or range-rated burners have a single nominal heat input. Range-rated burners can be adjusted between the maximum nominal heat input and the minimum nominal heat input declared by the manufacturer. 3.2.10 heat load rate ratio between heat
