Flame arrestor

Patent metadata

Field	Value
Publication number	US-2016305653-A1
Application number	US-201615078645-A
Country	US
Kind code	A1
Filing date	Mar 23, 2016
Priority date	Apr 17, 2015
Publication date	Oct 20, 2016
Grant date	—

Abstract

A flame arrestor including a flame arrestor collar and a flame arrestor plug. The flame arrestor collar includes a flame path that may be defined by one or more modules. The flame arrestor plug may be configured for connection to the flame arrestor collar. Various embodiments of a flame arrestor, including those having venting and/or draining elements or capabilities are also disclosed.

First claim

What is claimed:

1 . A flame arrestor comprising:
a collar configured to connect the flame arrestor to a portion of an enclosure, the collar having one or more openings configured to allow gas associated with said enclosure to flow into the flame arrestor, and one or more flame paths disposed within the collar and including one or more grooves configured to transfer the gas from a first side of the one or more flame paths to a second side of the one or more flame paths; and a plug configured for connection to the collar, the plug having one or more exit apertures in communication with the second side of the one or more flame paths and configured to allow the gas to exit the flame arrestor.

2 . The flame arrestor of claim 1 , wherein the collar is configured for threaded connection to the plug.

3 . The flame arrestor of claim 1 , wherein the one or more flame paths includes a spiral or helical flame path.

4 . The flame arrestor of claim 3 , wherein the spiral or helical flame path is provided within a radially expanded portion of the collar.

5 . The flame arrestor of claim 1 , wherein a ratio of flame path length to cross section diameter varies by portion or segment of the flame arrestor.

6 . The flame arrestor of claim 1 , wherein a ratio of flame path length to the cross section diameter is about 50:1 at an input portion and about 70:1 at an output portion.

7 . The flame arrestor of claim 1 , wherein a ratio of flame path length to the cross section diameter is about 200:1 or greater.

8 . The flame arrestor of claim 1 , wherein the one or more flame paths includes a conic helical flame path.

9 . The flame arrestor of claim 1 , wherein the one or more flame paths includes a cylindrical helical flame path.

10 . The flame arrestor of claim 1 , comprising a plurality of flame path modules or stages.

11 . The flame arrestor of claim 10 , wherein one or more of the pluraltity of flame path modules or stages includes an aperture configured to transfer gas to another module or stage.

12 . The flame arrestor of claim 10 , wherein the plurality of flame path modules or stages comprise a plurality of plates.

13 . The flame arrestor of claim 10 , wherein the plurality of flame path modules or stages comprise a plurality of cylinders.

14 . The flame arrestor of claim 1 , including a drain valve.

15 . The flame arrestor of claim 14 , wherein the valve comprises a normally-open, self-shutting valve, a spring-type valve, or a ball-type valve.

16 . The flame arrestor of claim 1 , including a drain hole.

17 . The flame arrestor of claim 1 , wherein the collar includes a plurality of threads configured for connection to a portion of said enclosure.

18 . The flame arrestor of claim 1 , including an input valve disposed on a top portion of the flame arrestor and configured to control gas flow into the flame arrestor.

19 . The flame arrestor of claim 18 , wherein the input valve is self-shutting.

20 . The flame arrestor of claim 1 , including a plurality of flame paths configured to provide alternative flame paths.

Assignees

• Eaton Corp

Inventors

• Fields Thomas James
• Gavriliuc Sorin
• Klap Aaron Michael
• Foote Peter Robert

Classifications

• A62C4/00 Primary

  Flame traps allowing passage of gas but not of flame or explosion wave · CPC title

• F23D14/82

  Preventing flashback or blowback · CPC title

• F23D14/825 Primary

  using valves · CPC title

• A62C4/02

  in gas-pipes (safety valves F16K17/00) · CPC title

• A62C3/08

  in aircraft {(A62C3/0207 takes precedence)} · CPC title