(19)
(11) EP 0 461 747 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.04.1992 Bulletin 1992/17

(43) Date of publication A2:
18.12.1991 Bulletin 1991/51

(21) Application number: 91303171.2

(22) Date of filing: 10.04.1991
(51) International Patent Classification (IPC)5: F23J 3/00, F23M 11/04
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU NL SE

(30) Priority: 13.06.1990 US 537342

(71) Applicant: THE BABCOCK & WILCOX COMPANY
New Orleans, Louisiana 70160 (US)

(72) Inventors:
  • Anderson, Paul Thomas
    Lancaster, Ohio 43130 (US)
  • Vetterick, Richard Charles
    Akron, Ohio 44313 (US)

(74) Representative: Williams, Trevor John (GB) et al
J.A. Kemp & Co. 14 South Square, Gray's Inn
GB-London WC1R 5EU
GB-London WC1R 5EU (GB)


(56) References cited: : 
   
       


    (54) Auxiliary port cleaner for boiler wall sensing port


    (57) A cleaner (10) for a boiler wall port (36) used by various instruments, including light or sound wave receiving or emitting devices (44) in which the device is mounted to a wallbox (38) surrounding the port and extending from the boiler wall. The wallbox terminates in a mounting flange (42) spaced from the boiler and to which the device is attached. The device includes a wave guide (46) terminating in a flange (48) attached to the wallbox mounting flange. The cleaner includes a weldment (26) attached to the wallbox mounting flange and an actuator (20) mounted to the weldment. The actuator is coupled to a cutting sleeve (12) disposed within the wallbox and moveable into and out of the boiler wall port. The cutting sleeve is coupled to the actuator by a pair of connecting rods (14) passing through the wallbox mounting flange to insure precise alignment of the cutting sleeve.






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