USRE28320E - Cleaning of the interior of storage tanks - Google Patents

Cleaning of the interior of storage tanks Download PDF

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Publication number
USRE28320E
USRE28320E US31021372A USRE28320E US RE28320 E USRE28320 E US RE28320E US 31021372 A US31021372 A US 31021372A US RE28320 E USRE28320 E US RE28320E
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United States
Prior art keywords
tank
machine
cleaning
pipe
mounting
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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
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English (en)
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Publication of USRE28320E publication Critical patent/USRE28320E/en
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    • 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

  • ABSTRACT OF THE DISCLOSURE Device for tank-cleaning apparatus having a flanged mounting extending through and carried by the hatch, closure or top of a tank to be cleaned and an elongated pipe pivotally connected at one end to the flanged mounting inside of the hatch, closure or top and carrying the tank-cleaning apparatus at the other end.
  • the tank-cleaning device is raised up out of the tank and locked into an inoperative storing position or lowered into the tank and locked into an operating position. Raising and lowering is controlled externally of the tank. Cleaning fluid is introduced to the tank-cleaning apparatus through the pivotal connection which communicates with the elongated pipe.
  • Tank-cleaning machines which by means of a number of rotating jets of water are used to clean the interior of oil tankers. It is already known to lower such machines through entry ports into oil tanks to clean them, a procedure which is hardly feasible with very large size tanks such as are now used in oil tankers. It is also known to provide tank-cleaning machines as fixtures inside the tank, the machines being so disposed that the whole interior of the tank can be cleaned with an appropriate number of suitably located machines.
  • apparatus for cleaning the interior of it ships hold or tank comprising a mounting adapted to be mounted on the hatch cover of a ship, a tank-cleaning machine connected to said mounting, means which in use of the apparatus permit a flow of liquid to said machine from outside the hold or tank pivot and means permitting said machine to be movable between an inoperative position where it can be housed within said hatch cover and an operative position where it extends into the hold or tank.
  • the apparatus mounts the apparatus on the hatch cover so that the mounting is substantially central of the vessel since in this way the machine itself can be at the end of a long tubular arm housed within the inside of the hatch cover.
  • the long arm will, of course, allow the machine to extend deep into the hold or tank in use.
  • a winch, or other winding gear having a cable connectable to the tank cleaning machine and operable externally of the hatch cover to permit the machine to be lowered into its operating position or hoisted into its inoperative position housed within the cover.
  • a latching means may be provided to secure the apparatus in the inoperative position. This is preferably provided by a hook and eye arrangement which may be automatically engageable and manually releasable from above the hatch cover. The provision of such latching means also enables the strain to be taken oil the winch cable.
  • the latching means will preferably be disposed between the mounting and the winch.
  • means are also provided for securing the rotatable jets while the machine is in its stowed position to ensure that. when the hatch covers are slid open the jets do not accidentally foul the deck of the ship and become damaged.
  • a strop which is accessible from the top of the hatch cover and which can be lashed around the jets and tied off by hand on a suitable attachment secured with respect to the hatch cover.
  • While the machine and its liquid feed pipe can be swingably mounted by any suitable form of pivotal bracket
  • a swiveling pipe coupling which connects an inlet pipe for liquid to a supporting pipe connected to the machine while permitting said two pipes to be swingable with respect to each other through at least
  • said locking means is arranged to provide a visible indication from outside the hatch to show when said machine is in its operative position.
  • a locking means which comprises one or more locking pins extending through said mounting and threadedly engageable therewith, said pins being engageable with stop means connected to or forming part of said machine when the latter is in the operative position.
  • one locking pin only may be provided which is arranged to engage a stop means on said machine which serves to prevent movement of the machine in either direction.
  • the locking means is equipped with two locking pins engageable in threaded sleeves depending from said mounting, and two stop means provided on said pivot means, one pin and one stop means serving to prevent swinging movement in each direction about said pivot means.
  • FIG. 1 shows a perspective view, partly in section, of a tank-cleaning machine according to the invention in its inoperative or stowed position in the hatch cover of a ship,
  • FIG. 2 shows a perspective view of part of FIG. I illustrating the apparatus in its operative position
  • FIG. 3 shows a part sectional side elevation of the apparatus in the operative position, such apparatus being moditied to permit water to be supplied from above the hatch cover and,
  • FIG. 4 shows an enlarged sectional side elevation of part of the swivel coupling employed in this apparatus.
  • the tank 1 of a vessel intended for oil and bulk ore transport is provided with a hatch cover 2 which is slidable athwart the vessel to give access to the hold.
  • a flanged mounting 3 is secured to the outside of batch cover 2 and has a pipe 3a which is connected inside the hatch with a pipe 9 which enters a swivel coupling 4.
  • the swivel coupling 4 has an outlet pipe 5 at the end of which a tank-cleaning machine 6 known per se is mounted.
  • the pipes 5 and 3a are each equipped with four radially extending ribs 10 and 11 respectively for strengthening purposes.
  • a winch 7 is mounted in a gastight manner and controls a cable 8 connected to outlet pipe 5 so that the machine 6 can be moved into and out of its operative position from outside the hold.
  • the cable 8 is preferably made from terylene in order to reduce the danger of sparks when the winch is being operated.
  • FIG. 1 shows the machine in its inoperative position housed within the hatch cover 2 while FIG. 2 shows the position of the pipe 5 during operation of the machine. It will be seen that, when in operation the apparatus extends substantially vertically into the hold.
  • a latching means 12 is provided. This consists of a spring-loaded hook 13 adapted automatically to engage an eye 14 attached to the pipe 5 as the machine is raised into its inoperative position.
  • the hook may be released by hand from above the hatch cover after removing a top plate 15 of a housing 16 which is bolted to the hatch cover.
  • the top plate 15 is normally attach d to the housing 16 by means of bolts, the housing and top plate being such as to form a gastight seal when the top plate is in place.
  • the book 13 is pivoted on a plate (not shown) attached within the housing 16 in such a manner that the hook is enclosed within the housing when the cover 15 is in place.
  • a strop 17 is provided which can be tied in any desired manner around the nozzles and the end of pipe 5 in order to secure the nozfles in a position as shown.
  • a housing 18 and top plate 19 are provided, the strop 17 being tied off on some suitable cleat or the like within the housing 18. In this way the strop may be tied and untied by hand by means of access through the housing 18 when its top plate is removed. Again a gastight seal must be ensured between hatch 2, housing 18 and plate 19.
  • the water supply to the machine when operating can be provided from the side of the hold via a pipe 20, swivel coupling 4 and pipe 5 to the cleaning machine 6.
  • the water may be supplied from above the hatch cover.
  • the pipe 3a is extended above flange mounting 3 and terminates in a flange 21, the pipe 20 being omitted.
  • two locking devices 22 and 23 are provided. As shown in FIG. 3, these each comprise a cylindrical casing 24 which is fixed to the flange mounting 3 and provided near the top thereof with an internal thread.
  • a rod 25 is inserted into casing 24.
  • the rod is provided with a thread at its upper end which cooperates with the thread in the casing 24, the length of the rod being such that after it has been inserted into casing 24 and the two threads have been engaged, the lower end of each rod is immediately above one of two ledges 27 provided on the swivel coupling 4.
  • One of these ledges is shown in FIG.
  • FIGS. 3 and 4 While various swivel or rotary couplings may be used, we prefer to use a coupling as shown in detail in FIGS. 3 and 4 wherein the inlet pipe 9 from the water supply terminates in two branch pipe stubs 30 which extend oppositely to each other and at right angles to the inlet pipe.
  • Each such pipe stub has one arm of a U-shaped connector 29 rotatably mounted thereon in a liquidtight manner.
  • the other end of each U-connector is welded to one of two pipe stubs connected at right angles to pipe 5 at the other end of which the tank-cleaning machine 6 is mounted.
  • FIG. 4 shows an enlarged section through one of the rotatable couplings between one branch pipe stub 30 and its associated U-shaped connector 29.
  • annular seal 31 is provided to ensure that the joint between the pipe stubs 30 and connectors 29 is watertight while allowing pipe 5 and two U-shaped connectors 29 to be pivotally movable about the axis of seal ring 31 and the pipe stubs 30.
  • the seals 31 are preferably made from PIITFE.
  • Proxision is made for greasing the rotatable coupling from above the deck by means of a grease nipple 32 on the flange mounting 3 which is connected to a small bore pipe 33.
  • Pipe 33 divides into two paths, one feeding each rotatable coupling.
  • OBO vessels or large tankers or bulk carriers can be readily cleaned by machines disposed in the appropriately placed hatch covers and a system embodying such apparatus is especially well suited for automated and remote control operation which is frequently desirable in modern large tonnage vessels which operate with very small crews.
  • the device of this invention is equally useful when carried by the top wall of the tank rather than by its closure or hatch and the term top includes the top wall and hatch or closure of the tank.
  • Apparatus for cleaning the interior of a tank comprising a mounting adapted to be carried by the top of said tank and extending therein, a tank-cleaning machine connected to said mounting, means for introducing a flow of liquid to said machine from outside said tank and pivot means including a rotary pipe coupling permitting said machine to be movable between an inoperative position where it can be housed within said tank and an operative position where it extends into the tank.
  • Apparatus according to claim 1 in which a winch or other winding gear is provided to raise and lower said tank-cleaning machine between its operative and inoperative positions.
  • winding gear comprises a winch adapted to be mounted in a gastight manner on said tank for operation from the exterior of said tank to raise and lower a cable which is attached to said tank-cleaning machine.
  • a latching means is provided to securely hold said tank-cleaning machine while in its inoperative position within the tank, said latching means comprising a hook and eye arrangement which is operable from the exterior of said tank.
  • Apparatus according to claim 4 in which said eye is attached to said tank-cleaning machine and said hook is pivotally attachable with respect to the top of said tank and spring loaded in such a manner that said hook automatically engages said eye as said tank-cleaning machine is raised into its inoperative position.
  • Apparatus of claim 1 further including a locking means for locking the machine against movement while in its operative position.
  • said locking means comprises one or more locking pins extending through said mounting and threadedly engageable therewith said pins being engageable with stop means connected to or forming part of said machine when the latter is in the operative position 10.
  • Apparatus as claimed in claim 7 including two locking pins engageable in threaded sleeves depending from said mounting, and two stops means provided on said pivot means, one pin and one stop serving to prevent swinging movement in each direction about said pivot means.
  • tank-cleaning machine is of the type which includes rotatable nozzles arranged in use to direct jets of water at the surfaces to be cleaned.
  • said locking means comprises a strop provided in a casing mountable on the top of said tank and is accessible through a cover arranged to make a gastight seal.
  • said coupling comprises an inlet pipe which terminates in two branch pipe stubs extending oppositely to each other and at right angles to the inlet pipe, two U-shaped connectors one arm of each of which is rotatably connected to one of said branch pipe stubs in a liquidtight manner and the other arm of each of which is attached to one of two further pipe stubs connected to an outlet pipe which is connected to said tank-cleaning machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
US31021372 1969-07-30 1972-11-19 Cleaning of the interior of storage tanks Expired USRE28320E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3828269 1969-07-30

Publications (1)

Publication Number Publication Date
USRE28320E true USRE28320E (en) 1975-01-28

Family

ID=10402442

Family Applications (1)

Application Number Title Priority Date Filing Date
US31021372 Expired USRE28320E (en) 1969-07-30 1972-11-19 Cleaning of the interior of storage tanks

Country Status (8)

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US (1) USRE28320E (enrdf_load_stackoverflow)
CA (1) CA923259A (enrdf_load_stackoverflow)
DE (1) DE2036242B2 (enrdf_load_stackoverflow)
FR (1) FR2053285B1 (enrdf_load_stackoverflow)
GB (1) GB1258165A (enrdf_load_stackoverflow)
NL (1) NL7010741A (enrdf_load_stackoverflow)
NO (1) NO131284C (enrdf_load_stackoverflow)
SE (1) SE372914B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144898A (en) 1977-01-17 1979-03-20 Guignon John E Hose reel and jet cleaning machine
US4655897A (en) 1984-11-13 1987-04-07 Copytele, Inc. Electrophoretic display panels and associated methods

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1545896A (en) * 1922-02-27 1925-07-14 Hanlon John Apparatus for washing sediment from oil tanks
US1693885A (en) * 1927-09-15 1928-12-04 Arthur B Butterworth Tank-cleaning device
US2185567A (en) * 1936-12-07 1940-01-02 Qviller Olaf Emptying apparatus for diffusers, pulp bins, and the like for the manufacture of cellulose and paper
US3150669A (en) * 1962-04-18 1964-09-29 Jr Leon G Green Tank cleaning device
US3444869A (en) * 1965-11-04 1969-05-20 John E Guignon Jet cleaning device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB696631A (en) * 1948-06-09 1953-09-02 Reginald William Groom Improved means for cleaning dirty oil, and reclaiming solvents, water borne detergents and the like from emulsions

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1545896A (en) * 1922-02-27 1925-07-14 Hanlon John Apparatus for washing sediment from oil tanks
US1693885A (en) * 1927-09-15 1928-12-04 Arthur B Butterworth Tank-cleaning device
US2185567A (en) * 1936-12-07 1940-01-02 Qviller Olaf Emptying apparatus for diffusers, pulp bins, and the like for the manufacture of cellulose and paper
US3150669A (en) * 1962-04-18 1964-09-29 Jr Leon G Green Tank cleaning device
US3444869A (en) * 1965-11-04 1969-05-20 John E Guignon Jet cleaning device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144898A (en) 1977-01-17 1979-03-20 Guignon John E Hose reel and jet cleaning machine
US4655897A (en) 1984-11-13 1987-04-07 Copytele, Inc. Electrophoretic display panels and associated methods

Also Published As

Publication number Publication date
CA923259A (en) 1973-03-27
SE372914B (enrdf_load_stackoverflow) 1975-01-20
FR2053285B1 (enrdf_load_stackoverflow) 1973-04-27
DE2036242A1 (de) 1971-02-11
NO131284B (enrdf_load_stackoverflow) 1975-01-27
FR2053285A1 (enrdf_load_stackoverflow) 1971-04-16
NL7010741A (enrdf_load_stackoverflow) 1971-02-02
DE2036242B2 (de) 1976-10-07
NO131284C (enrdf_load_stackoverflow) 1975-05-07
GB1258165A (enrdf_load_stackoverflow) 1971-12-22

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