Fuel tip with integrated flashback arrestor

Abstract

Provided herein are flashback arrestors disposed proximate the head of a cutting torch for restricting flashback into the torch head. In one approach, a torch assembly is provided including a torch head having a gas passageway formed within a body of the torch head, and a tip coupled to a distal end of the torch head. In some approaches, the tip has a proximal end and a distal end, the distal end of the tip including an exit orifice and the proximal end of the tip having a set of openings in fluid communication with the gas passageway for delivering a gas towards the exit orifice. The torch assembly further includes a filter coupled to the tip at the proximal end thereof, the filter disposed between the set of openings and the gas passageway for restricting flashback into the torch head.

What is claimed is: 
     
         1 . A torch assembly, comprising:
 a torch head including a gas passageway formed within a body of the torch head;   a tip coupled to a distal end of the torch head, wherein the tip has a proximal end and a distal end, the distal end of the tip including an exit orifice and the proximal end of the tip having a set of openings in fluid communication with the gas passageway for delivering a gas towards the exit orifice; and   a filter coupled to the tip at the proximal end, the filter disposed between the set of openings and the gas passageway.   
     
     
         2 . The torch assembly of  claim 1 , further comprising a first tip fastener coupling the tip to the torch head. 
     
     
         3 . The torch assembly of  claim 2 , further comprising a tip adaptor coupling the tip to the torch head. 
     
     
         4 . The torch assembly of  claim 3 , further comprising an apparatus coupled to the tip adapter to prevent use without the filter, the apparatus including a spring element, a disc, and a retainer, wherein a force from the spring element causes the disc to engage the filter. 
     
     
         5 . The torch assembly of  claim 3 , the tip adaptor comprising:
 a proximal end secured within a bore of the torch head and a distal end secured to the tip by a second tip fastener; and   a plurality of passageways extending between the distal end of the tip adaptor and the proximal end of the tip adaptor.   
     
     
         6 . The torch assembly of  claim 5 , the tip adaptor comprising a set of threads disposed along an exterior surface for engagement with the second tip fastener. 
     
     
         7 . The torch assembly of  claim 1 , further comprising a cutting oxygen passageway formed within the body of the torch head, wherein the cutting oxygen passageway is aligned with a central passageway of the tip, and wherein the gas passageway is in fluid communication with a set of outer passageways of the tip. 
     
     
         8 . The torch assembly of  claim 7 , further comprising a second filter disposed within the cutting oxygen passageway. 
     
     
         9 . The torch assembly of  claim 1 , the tip further including a flange having a channel for receiving the filter. 
     
     
         10 . The torch assembly of  claim 1 , wherein the tip includes a shell surrounding an interior component. 
     
     
         11 . A flashback arrestor for a torch, comprising:
 a torch head including a gas passageway formed within a body of the torch head;   a tip coupled to a distal end of the torch head, wherein the tip has a proximal end and a distal end, the distal end of the tip including an exit orifice and the proximal end of the tip including a set of openings formed through a flange, the set of openings in fluid communication with the gas passageway for delivering a gas towards the exit orifice; and   a filter coupled to the flange and disposed between the set of openings and the gas passageway.   
     
     
         12 . The flashback arrestor of  claim 11 , further comprising a first tip fastener coupling the tip to the torch head. 
     
     
         13 . The flashback arrestor of  claim 11 , further comprising a tip adaptor disposed within the torch head, the tip adaptor coupling the tip to the torch head. 
     
     
         14 . The flashback arrestor of  claim 13 , the tip adaptor comprising:
 a proximal end secured within a bore of the torch head and a distal end secured to the tip by a second tip fastener; and   a plurality of passageways extending between the distal end and the proximal end of the tip adaptor.   
     
     
         15 . The flashback arrestor of  claim 11 , further comprising a cutting oxygen passageway formed within the body of the torch head, wherein the cutting oxygen passageway is aligned with a central passageway of the tip, and wherein the gas passageway is in fluid communication with a set of outer passageways of the tip. 
     
     
         16 . The flashback arrestor of  claim 15 , further comprising a filter disposed within the cutting oxygen passageway within the body of the torch head. 
     
     
         17 . A device comprising:
 a torch head including a body;   a mixed oxy-fuel gas passageway formed through the body;   a tip coupled to a distal end of the torch head, wherein the tip has a proximal end and a distal end, the distal end of the tip including an exit orifice and the proximal end of the tip including a set of openings formed through a flange, the set of openings in fluid communication with the gas passageway for delivering a gas to the exit orifice; and   a filter coupled to the flange and disposed between the set of openings and the gas passageway.   
     
     
         18 . The device of  claim 17 , further comprising a tip adaptor disposed within the torch head, the tip adaptor coupling the tip to the torch head, and the tip adaptor including:
 a proximal end secured within a bore of the torch head and a distal end secured to the tip by a second tip fastener; and   a plurality of passageways extending between the distal end and the proximal end of the tip adaptor.   
     
     
         19 . The device of  claim 18 , further comprising a cutting oxygen passageway formed within the body of the torch head, wherein the cutting oxygen passageway is aligned with a central passageway of the tip, and wherein the mixed oxy-fuel gas passageway is in fluid communication with a set of outer passageways of the tip. 
     
     
         20 . The device of  claim 19 , wherein the cutting oxygen passageway is aligned with a central passageway of the tip adaptor, and wherein the mixed oxy-fuel gas passageway is in fluid communication with a set of outer passageways of the tip adaptor.