US3420444A - Apparatus for washing the cargo tanks of ships,particularly oil tankers - Google Patents

Apparatus for washing the cargo tanks of ships,particularly oil tankers Download PDF

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Publication number
US3420444A
US3420444A US557450A US3420444DA US3420444A US 3420444 A US3420444 A US 3420444A US 557450 A US557450 A US 557450A US 3420444D A US3420444D A US 3420444DA US 3420444 A US3420444 A US 3420444A
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US
United States
Prior art keywords
nozzle
pipe
rod
washing
jet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US557450A
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English (en)
Inventor
Karl Gunnar Ajnefors
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Salen and Wicander AB
Original Assignee
Salen and Wicander AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from SE7829/65A external-priority patent/SE307719B/xx
Priority claimed from SE06534/66A external-priority patent/SE331937B/xx
Application filed by Salen and Wicander AB filed Critical Salen and Wicander AB
Application granted granted Critical
Publication of US3420444A publication Critical patent/US3420444A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/14—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with oscillating elements; with intermittent operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B08B9/0936—Cleaning containers, e.g. tanks by the force of jets or sprays using rotating jets

Definitions

  • the present invention relates to an apparatus for washing the cargo tanks of ships, particularly oil tankers, which apparatus includes a jet nozzle that depends downwardly into the cargo tank and which is connected to means for both rotating the nozzle about a vertical axis and means for oscillating the nozzle about a horizontal axis between an upper and a lower annular limit position.
  • Such apparatus are previously known to the art, in which the tank-washing operation is carried out by the use of forceful jets of water ejected through a nozzle connected to a source of water under pressure and revolving continuously in one single sense about a horizontal axis which rotates slowly about a vertical axis so as to cause the water jets successively, or incrementally, to sweep all surface elements of the bottom, walls and ceiling of the cargo tank.
  • the present invention has for its object to remedy this drawback by providing a washing apparatus in which the jet nozzle is arranged, in the course of its rotary motion about the vertical axis, to execute an oscillatory motion about its horizontal axis between an upper and a lower angular limit position.
  • the angular limit positions thus defined are suitably adjustable to enable the width and localization of the zone to be swept by the water jet to be selected at will, for instance to enable washing of the bottom only of the cargo tank.
  • an operating mechanism For transmitting the desired rotary and oscillatory motions to the nozzle, an operating mechanism is provided which is connected to the jet nozzle through movementtransmitting elements.
  • the operating mechanism is arranged to rotate the nozzle at a relatively high rate about the vertical axis, and to oscillate the same at a substantially slower rate about the horizontal axis, thereby causing the spot of impingement of the jet on the cargo-tank wall to move along substantially horizontally extending paths suitably spaced from one another.
  • the operating mechanism may be arranged to rotate the nozzle through several revolutions in one sense about the vertical axis, while slowly swinging the nozzle about its horizontal axis between the two angular limit positions, thereby causing the jet from the nozzle to sweep the cargotank wall along a helical path within a horizontally closed, but vertically limited zone.
  • the operating mechanism may be so designed as to turn the nozzle reciprocatorily about the vertical axis between predetermined angular limit positions, while the nozzle is carrying out its slow swinging motion about the horizontal axis, whereby the jet spot on the cargo-tank wall will follow a zigzag path within a zone which is delimited laterally, as well.
  • the operating mechanism may be so designed as to cause the jet nozzle to run through a plurality of cycles of oscillation at a relatively high angular velocity about the horizontal axis while turning slowly through one revolution about the vertical axis, thereby causing the spot of impingement of the water jet on the cargo-tank wall to describe a serpentine, or wave-shaped, path.
  • the mechanism should be so devised as to displace the wave-shaped path laterally by a suitable angular amount per revolution of the jet nozzle about the vertical axis.
  • FIGURE 1 illustrates the jet-nozzle mechanism proper in a first embodiment, the said mechanism being permanently mounted in a cargo tank, while FIGURE 2, on a larger scale, illustrates the operating mechanism which is designed as a detachable unit.
  • a vertical pipe 13 which, through a pipe extension 12 of slightly larger diameter, communicates with a branch pipe 14 disposed on deck and to which a water pump, not shown, for instance the cargo pump, is connected.
  • Pipe 13 is suspended from the deck by means of a flange plate 15 welded to the same.
  • a pipe extension 17 which is Sealingly rotatable relative to the pipe and has a closed bottom end. Sealingly and r0- tatably mounted in the side wall of the pipe extension 17 is a jet nozzle 18 which is bent through a right angle at a point which is spaced a short distance from its mounting end.
  • the outlet orifice of nozzle 18 can be caused to describe a helical path, either from top downwards or from bottom upwards, whereby the jet will sweep a wall-surface zone the position and vertical extent of which are determined by the upper and lower angular limit positions of the nozzle swinging about the horizontal axis.
  • the turning of the vertical plane of oscillation of the nozzle 18, i.e., the rotation of pipe extension 17, is effected through the intermediary of a tubular shaft 20 which is passed down through pipe 13 and has its lower end introduced into a central hole made in the bottom of the pipe extension and welded to this bottom, the upper end of shaft 20 projecting upward through an end wall on the extension 12 of pipe 13 on deck.
  • Axially guided within tube 20 is a rod 25 having its upper end projecting a certain distance beyond the top end of the tubular shaft.
  • Rod 25 carries at its lower end, which depends beyond the tubular shaft 20, a disc 26 which is guided for axial movement 'by means of three guide rods 27 secured to the bottom of pipe extension 17 and passed through corresponding holes made in said plate.
  • Rods 27 carry at their lower ends a plate 28 formed with a radial projection 29 adapted to limit the swinging movement of nozzle pipe 18 in the downward direction.
  • the disc 26 connected to rod 25 carries a pivot pin 39 having journalled thereon one end of a link 40 the opposite end of which is pivoted on a pin 41 secured to the horizontally extending portion of nozzle 18.
  • Pin 41 is disposed in laterally spaced relation to a vertical plane extending in parallel relation to the pin and containing the vertical axis of rotation of the nozzle pipe, so that upon moving the rod 25 upwardly from the position illustrated in FIGURE 1, the nozzle pipe 18 will be swung about its horizontal axis through the intermediary of link 40 from its downwardly directed position, as shown, to an upper position as indicated in broken lines.
  • the operating mechanism shown in FIGURE 2 comprises a frame generally designated by 50 and including a bottom member 51 and a top member 52 connected to the bottom member by four columns 53.
  • a gear wheel 54 Centrally mounted in the bottom frame member 51 is a gear wheel 54 which engages a smaller gear wheel or pinion 55 secured to a drive shaft 56 which can be rotated in the desired direction by any suitable motor 57, for instance a pneumatic motor.
  • a nut 60 Between two spaced parallel plates 58 inside the top frame member 52 a nut 60 provided with a control wheel 59 is rotatably but axially nondisplaceably mounted.
  • a screw-threaded rod or lead-screw 61 carrying at its bottom end a shaftconnecting sleeve 62 provided with a key 63.
  • Threaded onto the top end of lead-screw 61 is an adjustment nut 64 provided with a knob, as well as a lock nut 65 for this adjustment nut.
  • the bottom frame member 51 is so designed and dimensioned as to enable the entire operating mechanism to be bodily disposed on, and clamped to, the extension 12 of pipe 13 projecting above the deck by means of screws, not shown, engaging holes made in lugs formed on the pipe extension 12.
  • the tubular shaft is then pushed into the hub of gear 54 with two keys 67 secured to the gear in diametrically opposed positions entering corresponding key slots 68 formed in shaft 20, while the connecting sleeve 62 is passed over the rod and is secured to the latter by means of a key 63.
  • rod 25, by turning the wheel 59, is moved upward to an extent such as to swing the jet nozzle pipe 18 to its desired lower angular limit position. Then the motor 57 is started in a direction to cause the rod 25 which is rotated together with the tubular shaft 20, to be screwed downward again through nut 60. Obviously, during each revolution of the tubular shaft 20 and rod 25, respectively, about the vertical axis, the rod 25 will be displaced axially by a length corresponding to the pitch of the screw thread, thereby swinging the nozzle pipe 18 through a corresponding angle about its horizontal axis.
  • the jet ejected by the nozzle will impinge the wall at a spot describing a helical path from top downwards within a horizontally extending zone having a vertical width determined by the limit positions of the jet nozzle.
  • the direction of rotation of drive motor 57 may be reversed, after which the jet will sweep the same zone in a helical path from bottom upwards.
  • the adjustment nut 64 is formed at its bottom end with an annular flange 70 cooperating with two control devices 71 and 72, such as air valves, which control the direction of rotation of the drive motor and are vertically adjustable into different positions.
  • control wheel 59 of nut 60 By providing the control wheel 59 of nut 60 with gear teeth and connecting the same to a suitable source of driving power, it is possible, without reversing the direction of rotation of the tubular shaft 20 and rod 25, to cause the jet nozzle 18 to move in helical paths which on swinging downward from top are different from those obtained on swinging upward from bottom. If the wheel 59 is rotated in the same sense as the screw spindle or lead-screw 61 and rod 25, but at the double angular velocity, then the axial movement of the rod will be reversed with unchanged speed.
  • the rotation of nut 60 may be effected from the drive shaft 56 through any suitable gear train which may be releasably coupled to the shaft, although, of course, a separate drive motor may be employed for this purpose.
  • Apparatus for washing the cargo tanks of ships, particularly oil tankers which comprises:
  • said first and second means being adapted to operate simultaneously so as to rotate said nozzle at a relatively high rate about the vertical axis while at the same time oscillating the nozzle at a substantially slower rate about a horizontal axis, there by causing the spot of impingement of the jet on the wall of a cargo tank to move along a helical path within a horizontally closed but vertically limited zone.
  • oil tankers which comprises:
  • An apparatus characterized in of an operating mechanism connected thereto that the operating mechanism is connected to the nozzle through movement transmitting means, to execute, through the intermediary of a rotatable and axially dissimultaneously with its rotary motion about the ver- 5 placeable, screw-threaded rod co-operating with an axtical axis, an oscillatory motion about the horizonially fixed nut.
  • said operating mechanism also being constructed HOWARD NATTER, Assistant Examinerso that while maintaining the direction of rotation Us c1- XR. of the nozzle about the vertical axis, it can reverse 20 239 263 264 i the direction of swinging movement of the nozzle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Nozzles (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
US557450A 1965-06-14 1966-06-14 Apparatus for washing the cargo tanks of ships,particularly oil tankers Expired - Lifetime US3420444A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7829/65A SE307719B (da) 1965-06-14 1965-06-14
SE06534/66A SE331937B (da) 1966-05-12 1966-05-12

Publications (1)

Publication Number Publication Date
US3420444A true US3420444A (en) 1969-01-07

Family

ID=26654708

Family Applications (1)

Application Number Title Priority Date Filing Date
US557450A Expired - Lifetime US3420444A (en) 1965-06-14 1966-06-14 Apparatus for washing the cargo tanks of ships,particularly oil tankers

Country Status (7)

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US (1) US3420444A (da)
BE (1) BE682515A (da)
DK (1) DK123642B (da)
FI (1) FI47169C (da)
GB (1) GB1150383A (da)
NL (1) NL151671B (da)
NO (1) NO127805B (da)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595256A (en) * 1968-11-22 1971-07-27 Ethyl Corp Vessel-cleaning apparatus
US3645452A (en) * 1970-04-27 1972-02-29 Goodrich Co B F Tank cleaner
US3797745A (en) * 1973-01-24 1974-03-19 J Haus Apparatus for spraying refractory lining
US4211367A (en) * 1977-03-23 1980-07-08 Bmi, Inc. Gunning apparatus for in situ spraying of refractory material
US4272018A (en) * 1978-08-04 1981-06-09 Southern Refractories, Inc. Apparatus and method for spraying refractory material
US4272020A (en) * 1978-08-16 1981-06-09 Bmi Inc. Gunning apparatus for in situ spraying of refractory material
US4323196A (en) * 1980-02-22 1982-04-06 Logue Gerald W Paint spraying apparatus
US4351478A (en) * 1980-08-18 1982-09-28 Looper Bruce T Apparatus for cleaning tanks or vessels
US5460331A (en) * 1994-06-17 1995-10-24 Serv-Tech, Inc. Apparatus for dispersion of sludge in a crude oil storage tank
US20070051392A1 (en) * 2003-11-10 2007-03-08 Cleanhull Norway As Device for cleaning subsea surfaces such as ship hulls
US20090317554A1 (en) * 2008-06-24 2009-12-24 Specialty Coating Systems, Inc. Apparatus and method for spray coating
WO2011019492A1 (en) 2009-08-13 2011-02-17 Michael Shawn Zilai Articulating and rotary cleaning nozzle spray system and method
US9604265B2 (en) * 2010-06-24 2017-03-28 Steve J. Schmit Oscillating fluid jet assembly
US9656308B2 (en) 2015-07-10 2017-05-23 NGL Solids Solutions, LLC Systems and processes for cleaning tanker truck interiors
WO2017112799A1 (en) 2015-12-22 2017-06-29 Bay Worx Laboratories, Llc Multi-axis articulating and rotary spray system and method
US9925572B2 (en) 2015-07-10 2018-03-27 NGL Solids Solutions, LLC Devices, systems, and processes for cleaning the interiors of frac tanks
US10589287B2 (en) 2015-07-10 2020-03-17 NGL Solids Solutions, LLC Systems and methods for oil field solid waste processing for re-injection
US11911732B2 (en) 2020-04-03 2024-02-27 Nublu Innovations, Llc Oilfield deep well processing and injection facility and methods

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110371506B (zh) * 2019-07-09 2021-07-23 四川宏鑫石油装备制造有限公司 一种基于icows的大型原油储罐清洗喷射方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1156612A (en) * 1914-12-04 1915-10-12 John P Campbell Sprinkler for irrigating systems.
US1831029A (en) * 1929-08-12 1931-11-10 Standard Oil Co Tank car washer
US2726666A (en) * 1952-10-06 1955-12-13 George R Oxford Dishwasher
US2785008A (en) * 1955-11-18 1957-03-12 Arthur R Young Tank-cleaning device
US3265309A (en) * 1961-01-31 1966-08-09 Hammelmann Paul Swinging nozzle device for cleaning pipes, storage tanks and the like

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1156612A (en) * 1914-12-04 1915-10-12 John P Campbell Sprinkler for irrigating systems.
US1831029A (en) * 1929-08-12 1931-11-10 Standard Oil Co Tank car washer
US2726666A (en) * 1952-10-06 1955-12-13 George R Oxford Dishwasher
US2785008A (en) * 1955-11-18 1957-03-12 Arthur R Young Tank-cleaning device
US3265309A (en) * 1961-01-31 1966-08-09 Hammelmann Paul Swinging nozzle device for cleaning pipes, storage tanks and the like

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3595256A (en) * 1968-11-22 1971-07-27 Ethyl Corp Vessel-cleaning apparatus
US3645452A (en) * 1970-04-27 1972-02-29 Goodrich Co B F Tank cleaner
US3797745A (en) * 1973-01-24 1974-03-19 J Haus Apparatus for spraying refractory lining
US4211367A (en) * 1977-03-23 1980-07-08 Bmi, Inc. Gunning apparatus for in situ spraying of refractory material
US4272018A (en) * 1978-08-04 1981-06-09 Southern Refractories, Inc. Apparatus and method for spraying refractory material
US4272020A (en) * 1978-08-16 1981-06-09 Bmi Inc. Gunning apparatus for in situ spraying of refractory material
US4323196A (en) * 1980-02-22 1982-04-06 Logue Gerald W Paint spraying apparatus
US4351478A (en) * 1980-08-18 1982-09-28 Looper Bruce T Apparatus for cleaning tanks or vessels
US5460331A (en) * 1994-06-17 1995-10-24 Serv-Tech, Inc. Apparatus for dispersion of sludge in a crude oil storage tank
US20070051392A1 (en) * 2003-11-10 2007-03-08 Cleanhull Norway As Device for cleaning subsea surfaces such as ship hulls
US7699066B2 (en) * 2003-11-10 2010-04-20 Cleanhull Norway As Device for cleaning subsea surfaces such as ship hulls
US20090317554A1 (en) * 2008-06-24 2009-12-24 Specialty Coating Systems, Inc. Apparatus and method for spray coating
WO2011019492A1 (en) 2009-08-13 2011-02-17 Michael Shawn Zilai Articulating and rotary cleaning nozzle spray system and method
US20110036381A1 (en) * 2009-08-13 2011-02-17 Michael Shawn Zilai Articulating and rotary cleaning nozzle spray system and method
US8181890B2 (en) 2009-08-13 2012-05-22 Nanoworx, LLC Articulating and rotary cleaning nozzle spray system and method
US9604265B2 (en) * 2010-06-24 2017-03-28 Steve J. Schmit Oscillating fluid jet assembly
US9656308B2 (en) 2015-07-10 2017-05-23 NGL Solids Solutions, LLC Systems and processes for cleaning tanker truck interiors
US9925572B2 (en) 2015-07-10 2018-03-27 NGL Solids Solutions, LLC Devices, systems, and processes for cleaning the interiors of frac tanks
US9925573B2 (en) 2015-07-10 2018-03-27 NGL Solids Solutions, LLC Systems and processes for cleaning tanker truck interiors
US10589287B2 (en) 2015-07-10 2020-03-17 NGL Solids Solutions, LLC Systems and methods for oil field solid waste processing for re-injection
WO2017112799A1 (en) 2015-12-22 2017-06-29 Bay Worx Laboratories, Llc Multi-axis articulating and rotary spray system and method
US10449563B2 (en) 2015-12-22 2019-10-22 Bay Worx Laboratories, Llc Multi-axis articulating and rotary spray system and method
EP3738679A1 (en) 2015-12-22 2020-11-18 Bay Worx Laboratories, LLC Multi-axis articulating and rotary spray system
US11648578B2 (en) 2015-12-22 2023-05-16 Trinity Bay Worx, Llc Multi-axis articulating and rotary spray system and method
US11911732B2 (en) 2020-04-03 2024-02-27 Nublu Innovations, Llc Oilfield deep well processing and injection facility and methods

Also Published As

Publication number Publication date
FI47169B (da) 1973-07-02
NO127805B (da) 1973-08-20
FI47169C (fi) 1973-10-10
GB1150383A (en) 1969-04-30
NL6608198A (da) 1966-12-15
BE682515A (da) 1966-11-14
NL151671B (nl) 1976-12-15
DK123642B (da) 1972-07-17

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