WO1991005619A1 - Cleaning device, especially adapted for cleaning of tanks - Google Patents

Cleaning device, especially adapted for cleaning of tanks Download PDF

Info

Publication number
WO1991005619A1
WO1991005619A1 PCT/NO1990/000156 NO9000156W WO9105619A1 WO 1991005619 A1 WO1991005619 A1 WO 1991005619A1 NO 9000156 W NO9000156 W NO 9000156W WO 9105619 A1 WO9105619 A1 WO 9105619A1
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning
nozzles
pipe
rotating
head
Prior art date
Application number
PCT/NO1990/000156
Other languages
French (fr)
Inventor
Håkon Magnus JACOBSEN
Original Assignee
Bismo Industrier A-S
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
Application filed by Bismo Industrier A-S filed Critical Bismo Industrier A-S
Publication of WO1991005619A1 publication Critical patent/WO1991005619A1/en

Links

Classifications

    • 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
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/06—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet by jet reaction, i.e. creating a spinning torque due to a tangential component of the jet
    • B05B3/066—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet by jet reaction, i.e. creating a spinning torque due to a tangential component of the jet the movement of the outlet elements being a combination of two movements, one being rotational
    • 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
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/06—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet by jet reaction, i.e. creating a spinning torque due to a tangential component of the jet
    • 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

  • Cleaning device especially adapted for cleaning of tanks
  • the present invention is related to a cleaning device, especially for cleaning the interior surfaces of tanks.
  • a number of different types of cleaning devices for such tanks are available on the market, some of which being adapted for permanent installation, others for installation and removement after use.
  • cleaning devices are available to be hoisted down into the tank, rotated and moved around in the tank by the pressure from the cleaning fluid. Such a solution may lead to damage on the interior of the tank, such as bulk heads, as well as on the jet nozzles and generally the cleaning equipment.
  • a stationary, reliable and cleaning device which is controlled from a central command station, preferably computerized to adapt the cleaning sequenze to the interior shape for the tank or tanks in question.
  • the cleaning operation may be set into operation from a navigating bridge on board a ship or a central operation station in a factory.
  • the cleaning work normally has to be performed very quickly to clear the tank for utilazation and with a large degree of accuracy in all parts of the tank.
  • a continous control of all parameters in the cleaning process is ensured by use of a normally already existing computer syste .
  • FIG. 1 discloses schematically an example of using the present invention in a tank on board a ship, comprising three cleaning balls connected to a drive means on top of the upper deck
  • Fig. 2 discloses an axial section through a cleaning ball
  • Fig. 3 discloses a side view of a nozzle segment.
  • Fig. 1 discloses schematically the cleaning device according to the present invention, suspended from a deck or tank top 12 on which a drive means 2 is arranged, comprising the drive for the drive shaft of the cleaning device and for pumps etc. for the cleaning fluid. From the tank top a pipe 3 is extending downwards to a cleaning ball 1. Depending of the height of the tank further units comprising pipe 3 and cleaning ball 1 may be connected to the lower ball of the cleaning device such that the cleaning device may comprise three cleaning balls 1 arranged above each other within the height of the tank.
  • the pipe 3 In the interior of.the pipe 3 extends a shaft 4 through the tank top 12, being preferably driven by an electric or hydraulic motor in the drive means 2.
  • the shaft 4 is extending through the cleaning ball 1, driving a gear 4 meshing with the gear 6 connected with an horizontal shaft 7.
  • the horizontal shaft is extending through an aperture in the axis 4 to the other half of the cleaning ball, a nozzle segment 9 being connected with both ends of the horizontal shaft 7.
  • Each nozzle segment 9 is comprising two nozzles 8 being arranged diametrically opposed to each other.
  • the gear 5 When rotating the vertical shaft 4, the gear 5 will drive also the horizontal shaft 7 in such a way that the ball will have the same number of revolutions as the shaft 4.
  • the gear system will have an exchange between the gears 5 and 6, such that the nozzle segments 9 on both sides of the ball rotate with another number of revolutions, whereby the four nozzles 4 on the two nozzle segments 9 very e ficiently will be directed to all surfaces of the tank. This as well as other parameters being adjusted to the interior tank shape in question.
  • the pressurized cleaning fluid is guided from the drive unit 2 through the interior 13 of the pipe 3, into the, or each ball 1 and further to the interior of the nozzle segment and the nozzle aperture. From hear the cleaning fluid is driven without substantial decrease of the pressure out of the nozzles 8.
  • the nozzle segments are arranged diametrically opposed directed, nozzles 8.
  • the nozzles 8 in each nozzle 5 segment of each ball are arranged preferably parallel in such a way that reaction forces from the four nozzles substantially neutralize each other without effecting the balls.
  • the lowermost cleaning ball comprises a cover 10 closing the ball and thereby also the o interior 13 of the pipe, thereby closing the fluid flow at the lowermost ball.
  • the cleaning ball principally comprises a middle unit in form of a ball disc having a flat bottom and top, the pipe being connected to the top by means of a cover 11 and the bottom s as well being flat, whereby a further pipe 3 by means of a cover 11 can be connected to the underside of the ball disc, or terminated as described above, by means of a cover 10.
  • the nozzle segments 9 and the covers 10 and 11 are tightly connected in such a way that fluids from the interior of the tank cannot protude o into the different parts of the cleaning ball, such as gears in the interior of the balls.
  • the driving device comprises all components necessary to drive the cleaning system itself, including electrical motors, pumps and necessary electronics. Likewise a safety valve is 5 provided to ensure supply of air, thereby avoiding underpressure in the piping system. Furthermore the driving device 2 preferably comprises pipe connections to the valve for selectively supply of chemical cleaning fluid and clean water, whereby these units of security reasons are shielded against other parts of the 0 driving device.
  • the shaft 4 is driven by the electric motor in the driving device 2.
  • the electric motor may be replaced by a hydraulic drive system.
  • the pipe 3 may be provided by braces 14, especially by arrangement of several balls above each other.
  • the gear 5 drives the gear 6 on the horizontal shaft 7, thereby rotating the nozzle segment 9.
  • the shaft 7 is extending through the ball and connecting the two nozzle segments 9 with each other in such a way that they are rotating synchron ⁇ ous.
  • the transversal shaft 7 rotates the shaft 4 in such a way that the ball is rotated around its own axis.
  • the pressure from the cleaning fluid in the interior 13 of the pipe 3 is transmit ⁇ ted without substantial pressure fall to the to nozzles 8 in each nozzle segment 9.
  • Choice of . fluid in the cleaning system, the chemical cleaning system and possibly clean water as well as the rotation of the shaft 4 is controlled by a board computer considering thereby the size and shape of the tank as well as the last cargo contained in the tank.
  • a cleaning of the tank with high accuracy may be performed, thereby considering the last cargo contained in the tank.
  • the cleaning furthermore is performed successively on the interior inner surface of the tank using a cleaning pressure which ensures correct cleaning in the interior tank. If in certain cases an increased cleaning pressure should be needed, a certain number of the nozzles may be blocked.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Catching Or Destruction (AREA)

Abstract

Cleaning device, especially for cleaning of tanks, comprising a pipeline (3) suspended from the top of the tank, a cleaning head (1) comprising a number of nozzles being secured to the pipe and comprising a plurality of nozzles rotating about a horizontal axis when the head as such is rotating around a vertical axis by mechanical meshing gears and where the cleaning fluid is supplied to the nozzles to the pipe, where the pipe (3) being suspended in a drive means (2) which is rotating a shaft (4) arranged in interior of the pipe, the rotation of the shaft being transferred to the cleaning head to rotate the cleaning head about the vertical axis and thereby rotating the nozzles about the horizontal axis, the cleaning head comprising the nozzles having a ball shape without protruding parts and that further pipe segments having a cleaning head arranged on the lower end, may be fixed to the lowermost cleaning head thereby connecting the shafts (4) in the interior of the pipe segments for rotating all cleaning heads and nozzles.

Description

Cleaning device, especially adapted for cleaning of tanks
The present invention is related to a cleaning device, especially for cleaning the interior surfaces of tanks.
Presently there exists a demand for reliable and accurate cleaning systems for tanks, such as for cleaning tanks in ships as well as land based tanks, stationary as are found in factories etc, as well as mobile such as transportation tank units for roads and rails.
A number of different types of cleaning devices for such tanks are available on the market, some of which being adapted for permanent installation, others for installation and removement after use.
Furthermore cleaning devices are available to be hoisted down into the tank, rotated and moved around in the tank by the pressure from the cleaning fluid. Such a solution may lead to damage on the interior of the tank, such as bulk heads, as well as on the jet nozzles and generally the cleaning equipment. Using the pressure of the cleaning fluid to operate the cleaning devise as is usual, means that a substantial part of the pressure cannot be utilized for the cleaning process, thereby decreasing the effect of the cleaning fluid jets substantially.
With the" cleaning device according to the present invention, a stationary, reliable and cleaning device is provided which is controlled from a central command station, preferably computerized to adapt the cleaning sequenze to the interior shape for the tank or tanks in question. The cleaning operation may be set into operation from a navigating bridge on board a ship or a central operation station in a factory. The cleaning work normally has to be performed very quickly to clear the tank for utilazation and with a large degree of accuracy in all parts of the tank. A continous control of all parameters in the cleaning process is ensured by use of a normally already existing computer syste .
The above mentioned advantages are acheived with the cleaning device according to the present invention sa defined with the features stated in the claims.
In the drawing Fig. 1 discloses schematically an example of using the present invention in a tank on board a ship, comprising three cleaning balls connected to a drive means on top of the upper deck, Fig. 2 discloses an axial section through a cleaning ball and Fig. 3 discloses a side view of a nozzle segment.
Fig. 1 discloses schematically the cleaning device according to the present invention, suspended from a deck or tank top 12 on which a drive means 2 is arranged, comprising the drive for the drive shaft of the cleaning device and for pumps etc. for the cleaning fluid. From the tank top a pipe 3 is extending downwards to a cleaning ball 1. Depending of the height of the tank further units comprising pipe 3 and cleaning ball 1 may be connected to the lower ball of the cleaning device such that the cleaning device may comprise three cleaning balls 1 arranged above each other within the height of the tank.
In the interior of.the pipe 3 extends a shaft 4 through the tank top 12, being preferably driven by an electric or hydraulic motor in the drive means 2. The shaft 4 is extending through the cleaning ball 1, driving a gear 4 meshing with the gear 6 connected with an horizontal shaft 7. The horizontal shaft is extending through an aperture in the axis 4 to the other half of the cleaning ball, a nozzle segment 9 being connected with both ends of the horizontal shaft 7. Each nozzle segment 9 is comprising two nozzles 8 being arranged diametrically opposed to each other.
When rotating the vertical shaft 4, the gear 5 will drive also the horizontal shaft 7 in such a way that the ball will have the same number of revolutions as the shaft 4. Preferably the gear system will have an exchange between the gears 5 and 6, such that the nozzle segments 9 on both sides of the ball rotate with another number of revolutions, whereby the four nozzles 4 on the two nozzle segments 9 very e ficiently will be directed to all surfaces of the tank. This as well as other parameters being adjusted to the interior tank shape in question.
The pressurized cleaning fluid is guided from the drive unit 2 through the interior 13 of the pipe 3, into the, or each ball 1 and further to the interior of the nozzle segment and the nozzle aperture. From hear the cleaning fluid is driven without substantial decrease of the pressure out of the nozzles 8. In each of the nozzle segments are arranged diametrically opposed directed, nozzles 8. Furthermore the nozzles 8 in each nozzle 5 segment of each ball are arranged preferably parallel in such a way that reaction forces from the four nozzles substantially neutralize each other without effecting the balls.
As disclosed in Fig. 1 the lowermost cleaning ball comprises a cover 10 closing the ball and thereby also the o interior 13 of the pipe, thereby closing the fluid flow at the lowermost ball.
The cleaning ball principally comprises a middle unit in form of a ball disc having a flat bottom and top, the pipe being connected to the top by means of a cover 11 and the bottom s as well being flat, whereby a further pipe 3 by means of a cover 11 can be connected to the underside of the ball disc, or terminated as described above, by means of a cover 10. The nozzle segments 9 and the covers 10 and 11 are tightly connected in such a way that fluids from the interior of the tank cannot protude o into the different parts of the cleaning ball, such as gears in the interior of the balls.
The driving device comprises all components necessary to drive the cleaning system itself, including electrical motors, pumps and necessary electronics. Likewise a safety valve is 5 provided to ensure supply of air, thereby avoiding underpressure in the piping system. Furthermore the driving device 2 preferably comprises pipe connections to the valve for selectively supply of chemical cleaning fluid and clean water, whereby these units of security reasons are shielded against other parts of the 0 driving device. In operation the shaft 4 is driven by the electric motor in the driving device 2. The electric motor may be replaced by a hydraulic drive system.
The pipe 3 may be provided by braces 14, especially by arrangement of several balls above each other. When the shaft 4 5 is rotated, the gear 5 drives the gear 6 on the horizontal shaft 7, thereby rotating the nozzle segment 9. The shaft 7 is extending through the ball and connecting the two nozzle segments 9 with each other in such a way that they are rotating synchron¬ ous. The transversal shaft 7 rotates the shaft 4 in such a way that the ball is rotated around its own axis. The pressure from the cleaning fluid in the interior 13 of the pipe 3 is transmit¬ ted without substantial pressure fall to the to nozzles 8 in each nozzle segment 9. Choice of . fluid in the cleaning system, the chemical cleaning system and possibly clean water as well as the rotation of the shaft 4 is controlled by a board computer considering thereby the size and shape of the tank as well as the last cargo contained in the tank.
With the cleaning device according to the present invention a cleaning of the tank with high accuracy may be performed, thereby considering the last cargo contained in the tank. The cleaning furthermore is performed successively on the interior inner surface of the tank using a cleaning pressure which ensures correct cleaning in the interior tank. If in certain cases an increased cleaning pressure should be needed, a certain number of the nozzles may be blocked.

Claims

P a t e n t C l a i m s
5 1. Cleaning device, especially for cleaning of tanks, comprising a pipeline (3) suspended from the top of the tank, a cleaning head (1) comprising a number nozzles being secured to the pipe and comprising a plurality of nozzles rotating about a horizontal axis when the head as such is rotating around a o vertical axis by mechanical meshing gears and where the cleaning fluid is supplied to the nozzles to .the pipe, CHARACTERIZED IN the pipe (3) being suspended in a drive means (2) which is rotating a shaft (4) arranged in interior of the pipe, the rotation of the shaft being transferred to the cleaning head to s rotate the cleaning head about the vertical axis and thereby rotating the nozzles about the horizontal axis, the cleaning head comprising the nozzles having a ball shape without protuding parts and that further pipe segments having a cleaning head arranged on the lower end, may be fixed to the lowermost cleaning 0 head thereby connecting the shafts (4) in the interior of the pipe segments for rotating all cleaning heads and nozzles.
2. Cleaning device according to claim 1, CHARACTERIZED IN the operation sequence of the cleaning device being controlled by a central computer whereby the rotation speed of the shaft (4) 5 and the horizontal shafts in the different cleaning balls may be controlled* based on parameters as to the shape of the interior of the tank, the type of cargo to be removed from the interior surfaces of "the tank, the type of cleaning fluid, the fluid pressure etc. 0
PCT/NO1990/000156 1989-10-20 1990-10-19 Cleaning device, especially adapted for cleaning of tanks WO1991005619A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO894182A NO170916C (en) 1989-10-20 1989-10-20 RINSE DEVICE, ISAES FOR TANKS
NO894182 1989-10-20

Publications (1)

Publication Number Publication Date
WO1991005619A1 true WO1991005619A1 (en) 1991-05-02

Family

ID=19892494

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1990/000156 WO1991005619A1 (en) 1989-10-20 1990-10-19 Cleaning device, especially adapted for cleaning of tanks

Country Status (4)

Country Link
EP (1) EP0496808A1 (en)
AU (1) AU6619190A (en)
NO (1) NO170916C (en)
WO (1) WO1991005619A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012028590A3 (en) * 2010-09-01 2012-06-28 Wuethrich Albrecht Pipe-cleaning nozzle body

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO129836B (en) * 1968-11-06 Niikura Kogyo Co Ltd,Ja
DK46529C (en) * 1930-10-08 1932-11-21 Butterworth System Inc Procedure for cleaning the interior of tanks in oil refineries, storage tanks, ship tanks and the like.
DE2307609B2 (en) * 1973-02-16 1975-07-31 Fa. Erwin Stelzer, 3530 Warburg Device for cleaning containers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK46529C (en) * 1930-10-08 1932-11-21 Butterworth System Inc Procedure for cleaning the interior of tanks in oil refineries, storage tanks, ship tanks and the like.
NO129836B (en) * 1968-11-06 Niikura Kogyo Co Ltd,Ja
DE2307609B2 (en) * 1973-02-16 1975-07-31 Fa. Erwin Stelzer, 3530 Warburg Device for cleaning containers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012028590A3 (en) * 2010-09-01 2012-06-28 Wuethrich Albrecht Pipe-cleaning nozzle body

Also Published As

Publication number Publication date
NO170916C (en) 1992-12-30
NO894182D0 (en) 1989-10-20
EP0496808A1 (en) 1992-08-05
NO170916B (en) 1992-09-21
NO894182L (en) 1991-04-22
AU6619190A (en) 1991-05-16

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