1、BSI Standards PublicationGas welding equipment Industrial manual and machine blowpipes for flameheating, flame brazing and allied processesPD CEN/TR 13259:2013National forewordThis Published Document is the UK implementation of CEN/TR 13259:2013.It supersedes PD 6633:1998 which is withdrawn.The UK p
2、articipation in its preparation was entrusted to TechnicalCommittee WEE/18, Gas welding and cutting appliances.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 provisions ofa contract. User
3、s are responsible for its correct application. The British Standards Institution 2013Published by BSI Standards Limited 2013ISBN 978 0 580 81659 8ICS 25.160.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of
4、theStandards Policy and Strategy Committee on 30 November 2013.Amendments issued since publicationDate Text affectedPUBLISHED DOCUMENTPD CEN/TR 13259:2013TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 13259 October 2013 ICS 25.160.30 Supersedes CR 13259:1998English Version Gas welding
5、 equipment - Industrial manual and machine blowpipes for flame heating, flame brazing and allied processesMatriel de soudage aux gaz - Chalumeaux manuels et automatiques usage industriel, pour le chauffage la flamme, le brasage la flamme et les techniques connexesGasschweigerte - Handgefhrte Sonderb
6、renner und Maschinenbrenner fr industrielle Prozesse zum Flammwrmen, Flammlten und fr verwandte Prozesse This Technical Report was approved by CEN on 29 July 2013. It has been drawn up by the Technical Committee CEN/TC 121. CEN members are the national standards bodies of Austria, Belgium, Bulgaria,
7、 Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey
8、and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref.
9、 No. CEN/TR 13259:2013: EPD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 2 Contents Page Foreword .4 Introduction 5 1 Scope .6 2 Normative references .6 3 Terms and definitions 7 4 Mixing systems 11 4.1 General 11 4.2 Injector blowpipe . 11 4.3 Equal pressure blowpipe . . 11 4.4 Blowpipe with gas mixing n
10、ozzle . 11 4.5 Blowpipe for aspirated air . 11 4.6 Blowpipe with external mixing . 13 5 Examples for the design of blowpipes . . 13 5.1 General 13 5.2 Manually guided blowpipes . . 13 5.3 Machine blowpipes semi-automatic . 15 5.4 Machine blowpipe - automatic . . 16 6 Hose connections . . 17 7 Materi
11、als . 17 8 Description of operation and operational incidents . . 18 8.1 Description of mixtures and flames . 18 8.1.1 Flame blow off at the flame . 18 8.1.2 Neutral flame (only for acetylene) . . 18 8.1.3 Process-related flame (for all fuel gases) . 18 8.1.4 Neutral mixture . 18 8.1.5 Process-relat
12、ed mixture . . 18 8.2 Description of operational incidents . 18 9 Marking . 18 10 Requirements . 18 10.1 General 18 10.2 Safety and operating requirements . 19 10.2.1 Gas tightness . 19 10.2.2 Valves 19 10.2.3 Adjustment of flame . . 19 10.2.4 Flow rate . 19 10.2.5 Protection against gas backflow .
13、. 19 10.2.6 Extinguishing behaviour and protection against flashback . 19 10.2.7 Stability in wind 19 10.2.8 Thermal stability . . 19 11 Tests 20 11.1 General 20 11.2 Leak test . 20 11.3 Test for stability in wind for fuel gas/compressed air and air-aspirated flames . 20 11.4 Valve test 20 11.5 Gas
14、backflow test . . 20 11.5.1 General 20 PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 3 11.5.2 Testing the gas backflow of oxygen/compressed air into the fuel gas line . 21 11.5.3 Testing of flashback . 21 12 Instruction manual . 22 Annex A (informative) Terminology for heating blowpipes and examples of
15、design . 23 Annex B (informative) Approximated mixing ratios for process-related flame settings (adjustments) 24 Bibliography . 25 PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 4 Foreword This document (CEN/TR 13259:2013) has been prepared by Technical Committee CEN/TC 121 “Welding andallied processes”,
16、 the secretariat of which is held by DIN. Attention is drawn to the possibility that some of the elements of this document may be the subject of patentrights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes CR 13259:1998. PD CE
17、N/TR 13259:2013CEN/TR 13259:2013 (E) 5 Introduction Requests for official interpretations of any aspect of this Technical Report should be directed to the Secretariatof CEN/TC 121/SC 7 via the National Standards Body. PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 6 1 Scope This Technical Report refers t
18、o manual blowpipes and stationary machine blowpipes with free burning flamesfor heat treatment of work pieces. These blowpipes are, due to their type of construction, designed for specialapplications and do not fall under the scope of EN ISO 5172 and EN ISO 9012. This Technical Report contains techn
19、ical regulations, specifications and tests. Blowpipes are intended for gaseous fuels in connection with oxygen, compressed air or aspirated air.Flow rates are not expressly limited and depend on the thermal process to be performed. 2 Normative references The following documents, in whole or in part,
20、 are normatively referenced in this document and areindispensable for its application. For dated references, only the edition cited applies. For undated references,the latest edition of the referenced document (including any amendments) applies. EN ISO 5172:2006, Gas welding equipment Blowpipes for
21、gas welding, heating and cutting Specifications and tests (ISO 5172:2006) EN 29090, Gas tightness of equipment for gas welding and allied processes (ISO 9090) EN ISO 9539, Gas welding equipment Materials for equipment used in gas welding, cutting and alliedprocesses (ISO 9539) ISO 15296, Gas welding
22、 equipment Vocabulary Terms used for gas welding equipment PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 7 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 15296 and the following apply. 3.1 manual blowpipe blowpipe, manually guided by the operator 3.2 ma
23、chine blowpipe blowpipe which for operation is fixed to a mechanical device and guided by it 3.2.1 semi-automatic machine blowpipeblowpipe which is mechanically guided Note 1 to entry: Operation manually performed. 3.2.2 automatic machine blowpipe blowpipe operated independent of persons and control
24、led and monitored by control and regulation devices 3.3 blowpipe head Note 1 to entry: The type of blowpipe head depends on its application. Note 2 to entry: Table 1 gives examples for different blowpipe head constructions. Table 1 Types of blowpipes application Blowpipe head Flame shape use by H =
25、handM =machine application combination single flameblowpipe(with andwithoutstabilisationflame) H/M preheatingflame-straighteningflame brazing andsoldering flame-hardening hot formingfusion welding general gas flame processes fuel gasoxygen compressedair multi-flameblowpipe H H/M twin headblowpipe H/
26、M preheatinghot forming flamebrazing fuel gasoxygen compressedair single rowblowpipe H/M flame-annealing flame-hardening fuel gas oxygen PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 8 Table 1 (continued) Blowpipe head Flame shape use by H = handM =machine application combination multi rowblowpipe M hot
27、 formingfusion weldingflame brazing and soldering fuel gasoxygen compressedair single rownozzleblowpipe M pre-heatingflame brazing and soldering fuel gasoxygen compressed air multi rownozzleblowpipe M pre-heatingflame brazing andsoldering fuel gas oxygen compressed air aspirated air profileblowpipe
28、M flame-heating flame-hardening special applications fuel gasoxygen compressedair ring blowpipe H/M pre-heatingflame-heating hot forming flame-hardening fuel gasoxygen compressedair flame-hardeningblowpipe M flame- hardening fuel gas oxygen air-aspirated blowpipe H/M flamebrazing andsoldering igniti
29、on flame fuel gas aspirated air diffusionblowpipe M flame-heating flame-polishing fuel gas oxygen nozzle mixingblowpipe H/M flame-heating hot forming fuel gas oxygen microjetblowpipe M flamebrazing andsoldering fuel gasoxygen compressed air PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 9 3.3.1 single fl
30、ame blowpipe flame shape of the blowpipe which consists of one flame Note 1 to entry: For slowly burning fuel gases, the single flame can be supported by concentrically arranged stabilisingflames. 3.3.2 multi-flame blowpipe flame shape from the blowpipe head which consists of one or more concentric
31、flame circles 3.3.3 twin head blowpipe blowpipe which is supplied by one mixing device Note 1 to entry: Several blowpipe nozzles enclose the work piece. 3.3.4 single row blowpipe flame shape from the blowpipe head is composed of one row of flames Note 1 to entry: Flame openings are in-line with the
32、blowpipe head. 3.3.5 multi row blowpipe flame shape from the blowpipe head which is composed of several flame rows, the number and position ofwhich depend on the specific intended use 3.3.6 single row nozzle blowpipe flame shape from the blowpipe head which is composed of several single nozzles appl
33、ying linear heat to thework piece 3.3.7 multi row nozzle blowpipe flame shape from the blowpipe head which consists of several single nozzles which form the flame shape 3.3.8 profile blowpipe flame shape blowpipe with a blowpipe geometry and shape depending on the intended use 3.3.9 ring blowpipe fl
34、ame shape from the blowpipe which circularly encloses or covers the work piece 3.3.10 flame-hardening blowpipe flame shape from the blowpipe with integrated quenching shower which is adapted to the work piece 3.3.11 air-aspirated blowpipe blowpipe in which the flame is produced according to the “Bun
35、sen burner principle“ Note 1 to entry: Regulation of the burner capacity is made by closing or opening the air supply and adjusting the fuelgas pressure. PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 10 3.3.12 diffusion blowpipe blowpipe in which oxygen and fuel gas are separately passed through the blo
36、wpipe head Note 1 to entry: Mixing takes place outside the blowpipe head and forms, as necessary, the flame shape. 3.3.13 nozzle mixing blowpipe blowpipe in which oxygen and fuel gas are mixed inside the heating nozzle according to the injector principle Note 1 to entry: See Figure 2. Each gas orifi
37、ce outlet is supplied by an injector. 3.3.14 microjet blowpipe blowpipe in which the flame shape is made of small very close flame bores Note 1 to entry: According to the type of application, one or several parallel bore rows are used. 3.4 ignition device separate energy source inside or at the blow
38、pipe ensuring the safe ignition of fuel gas mixtures escaping fromthe orifice outlets Note 1 to entry: See Figure 1. ignition aid ignition torch ignition flame at the blowpipe ignition with electrically ignited fuel gas/air mixture electric ignition and monitoring from theblowpipe with ignitionplug
39、electric ignition and monitoring ofignition flame and ignition of theworking blowpipeby the ignitionflame Figure 1 Ignition devices 3.5 stabilising flames continuously burning flames to stabilise the main flame during service PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 11 4 Mixing systems 4.1 General
40、Device where fuel gas is mixed with oxygen or air. 4.2 Injector blowpipe See EN ISO 5172:2006, 3.1.1. 4.3 Equal pressure blowpipe See EN ISO 5172:2006, 3.1.3. 4.4 Blowpipe with gas mixing nozzle Blowpipe where oxygen and fuel gas are individually mixed according to the injector principle. This occur
41、s inthe nozzle in front of the gas orifice outlet bores (nozzle mixing). See Figure 2. pfplKey 1 fuel gas pfpressure of fuel gas 2 air plair 3 pressure injector pmpressure of mixture 4 mixing chamber 5 mixing point “A“ 6 mixing distance 7 counter nut Figure 4 Mixer for fuel gas-aspirated air with sc
42、rew adjustment PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 13 4.6 Blowpipe with external mixing In the blowpipe, fuel gas and oxygen are separately guided to the gas orifices. Mixing is made outside the gasorifice bores (Figure 5) pf po Key 1 fuel gas pfpressure of fuel gas 2 oxygen popressure of oxyg
43、en 3 mixing point “A“ 4 mixing distance Figure 5 Blowpipe with external mixing 5 Examples for the design of blowpipes 5.1 General Blowpipe construction/design and flow rates of oxygen/compressed air/fuel gas are not subject to anylimitations. 5.2 Manually guided blowpipes Manually guided blowpipes a
44、re designed for manual operation and for a specific application. In general, they consist of a shank with gas-regulating valves and of a heating attachment with blowpipenozzle. (Examples are given in Figure 6). PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 14 a) injector blowpipe with suction effect b)
45、blowpipe with gas mixing nozzle c) blowpipe for aspirated airKey 1 heating attachment 2 blowpipe nozzles 3 mixture tube 4 mixing device (mixing chamber and injector)5 marking “suction effect“ 6 connecting nut 7 shank 8 body 9 adjustment valves10 hose connections 11 blowpipe head 12 fuel gas tube 13
46、oxygen tube 14 air inlet (air slider)15 fuel gas valve Figure 6 Examples for the design of manual blowpipes PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 15 5.3 Machine blowpipes semi-automatic Machine blowpipes, operated semi-automatically, are fixed and guided in/by devices. During operation the blowp
47、ipe is monitored by the operators. Essential elements are: blowpipe device gas distribution system connection devices ignition aids Examples for semi-automatic machine blowpipes are given in Figure 7 and Figure 8. Key 1 heating nozzle 2 mixing tube 3 blowpipe support 4 air slider 5 air inlet opening
48、 6 fuel gas valve 7 fuel gas connection 8 shut-off valve 9 filter 10 pressure switch 11 magnetic valve 12 pressure regulator 13 fuel gas 14 voltage 15 bypass valve Figure 7 Machine blowpipe - semi-automatic - with gas distribution system PD CEN/TR 13259:2013CEN/TR 13259:2013 (E) 16 Key 1 oxygen/comp
49、ressed air 2 compressed air 3 fuel gas 4 cooling water 5 air 6 voltage Figure 8 Machine blowpipe - semi-automatic - with gas distribution system 5.4 Machine blowpipe - automatic Automatic machine blowpipe function is operated and monitored by safety and control devices. Control and monitoring functions are made by sensors which act on the control devices. An example of an automatically working machine blowpipe is given in Figure 9. PD CEN/TR 132
