WO2018169399A1 - Système, véhicule et procédé pour retirer un matériau en vrac de la paroi d'une cale d'un navire en utilisant un flux de gaz comprimé pulsé - Google Patents

Système, véhicule et procédé pour retirer un matériau en vrac de la paroi d'une cale d'un navire en utilisant un flux de gaz comprimé pulsé Download PDF

Info

Publication number
WO2018169399A1
WO2018169399A1 PCT/NL2018/050163 NL2018050163W WO2018169399A1 WO 2018169399 A1 WO2018169399 A1 WO 2018169399A1 NL 2018050163 W NL2018050163 W NL 2018050163W WO 2018169399 A1 WO2018169399 A1 WO 2018169399A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas stream
compressed gas
pulsating
range
dispensing
Prior art date
Application number
PCT/NL2018/050163
Other languages
English (en)
Inventor
Johannis KOOIJMAN
Original Assignee
Kooijman Johannis
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 Kooijman Johannis filed Critical Kooijman Johannis
Publication of WO2018169399A1 publication Critical patent/WO2018169399A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/06—Cleaning devices for hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/06—Cleaning devices for hulls
    • B63B2059/065—Cleaning devices for hulls mounted on land-borne vehicles, e.g. travelling on the bottom of a dry-dock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/06—Cleaning devices for hulls
    • B63B59/08—Cleaning devices for hulls of underwater surfaces while afloat
    • B63B2059/082—Cleaning devices for hulls of underwater surfaces while afloat the devices being supported on arms or rods

Definitions

  • the present invention relates to a system for removing a bulk material from a wall of a ship's hold using a pulsating compressed gas stream.
  • the present invention relates to a vehicle provided with a system according to the first aspect of the present invention.
  • the present invention relates to a method for cleaning a wall with a pulsating compressed gas stream using a system according to the first aspect or using a vehicle according to the second aspect of the present invention.
  • the present invention relates to a use of the method according to the third aspect of the present invention for removing a bulk material from a wall of a ship's hold.
  • a pressure device for providing a compressed gas stream
  • a dispensing device which is connected to the pressure device for producing a flow of gas of the compressed gas stream which is providable by the pressure device, wherein the dispensing device is provided with a dispensing opening for dispensing the pulsating compressed gas stream via the dispensing opening for removing the bulk material;
  • a blocking device for blocking the delivery in a first position via the dispensing opening of the compressed gas stream and unblocking the delivery in a second position via the dispensing opening of the compressed gas stream, in such a way that a pulsating compressed gas stream can be produced.
  • the present invention is at least partly based on the view that by repeatedly applying the pulsating action of a pulsating compressed gas stream to bulk material which is situated on a wall of a ship, a relatively thorough removal of the bulk material can be achieved, which causes relatively less damage to a coating applied to the wall.
  • An additional advantage is the fact that, because of the pulsating action, the mean flow rate can remain relatively low, resulting in relatively little dust formation.
  • the system comprises a dispensing device and a blocking device in addition to a pressure device.
  • a pulsating compressed gas stream can be produced for which the pressure device does not have to be operated in a pulsating manner, as a result of which a relatively reliable system can be made.
  • the dispensing device is provided with an adjustment means for adjusting a flow profile of the pulsating compressed gas stream to be dispensed. This is favourable for modifying the pulsating compressed gas flow in a practical way, based on the bulk material to be removed or the design of the wall of the hold, in order to achieve satisfactory removal of the bulk material.
  • the dispensing device is provided with a dispensing chamber which is connected to the dispensing opening for a pulsating gas flow, in which case the adjustment means is provided in the dispensing chamber.
  • the adjustment means is not directly exposable to the bulk material.
  • the adjustment means comprises an adjustable element in order to produce a substantially curtain-shaped, funnel-shaped or cone-shaped pulsating compressed gas stream.
  • a substantially curtain-shaped pulsating compressed gas stream is favourable in order to produce a pulsating air blade for removing the bulk material by means of a relatively large force. It has been found that a substantially curtain-shaped pulsating compressed gas stream produces surprisingly good results for material having a density of less than 800 kg/m 3 , such as wood pellets and agricultural products, such as for example maize, soy and flour.
  • a substantially funnel-shaped or cone-shaped pulsating compressed gas stream has been found to be surprisingly favourable for material having a density greater than 800 kg/m 3 , such as for example ore, coal and sand.
  • the blocking device comprises a valve which can be driven by a drive mechanism, preferably a ball valve, in which the valve can be brought in the first position or the second position by the drive mechanism.
  • a valve is favourable for reliably unblocking or blocking delivery via the dispensing opening of the compressed air stream.
  • valve is configured so that it can be made to rotate substantially continuously in order to alternately bring the blocking device in the first position and the second position. This is favourable in order to achieve a relatively high pulsation frequency of the pulsating compressed gas stream in a reliable manner.
  • the pressure device is configured to provide a compressed air stream with a pressure in the range from 1 to 35 bar, preferably in the range from 5 to 25 bar, more preferably 14 to 20 bar and/or is configured to provide a compressed air stream with a flow rate in the range from 1 to 65 m 3 per minute, preferably in the range from 1 to 25 m 3 per minute, more preferably in the range from 5 to 35 m 3 per minute. It has been found that a pressure in said range and/or a flow rate in said range is surprisingly efficient in the removal of a bulk material.
  • the system is provided with a supply for supplying a liquid to the compressed gas stream and/or to the pulsating compressed gas stream in order to dispense the pulsating compressed gas stream and the liquid via the dispensing opening simultaneously. This is favourable in order to reduce dust formation when removing bulk material.
  • the supply for supplying the liquid is configured to provide a liquid at a pressure in the range from 1 to 100 bar, preferably at a pressure in the range from 6 to 36 bar. This is favourable in order to prevent dust formation during removal of the bulk material at a relatively limited flow rate of the liquid.
  • a pressure device for providing a compressed gas stream
  • a dispensing device which is connected to the pressure device for producing a flow of gas of the compressed gas stream which is providable by the pressure device, wherein the dispensing device is provided with a dispensing opening for dispensing the pulsating compressed gas stream via the dispensing opening for removing the bulk material;
  • a blocking device for blocking the delivery in a first position via the dispensing opening of the compressed gas stream and unblocking the delivery in a second position via the dispensing opening of the compressed gas stream, in such a way that a pulsating compressed gas stream can be produced.
  • the present invention relates to a vehicle provided with a system according to the first aspect, wherein the dispensing device is provided on a tool arm of the vehicle in order to move the dispensing opening along a wall of a ship's hold.
  • the advantages of such a vehicle are analogous to the advantages of the system according to the first aspect of the present invention.
  • An additional advantage of such a vehicle is the fact that the removal of bulk material from relatively high walls of a hold can be achieved in a relatively quick and safe manner.
  • the invention relates to a method for using a pulsating compressed gas stream to remove a bulk material from a wall of a ship's hold by means of a system according to the first aspect or a vehicle according to the second aspect, the method comprising the following steps:
  • the pulsating compressed gas stream comprises a liquid, preferably water.
  • the liquid is preferably supplied at a pressure in the range from 100 - 800 bar and a flow rate of 5 - 30 litres per minute.
  • the compressed gas stream has a pressure in the range from 1 to 35 bar, preferably in the range from 5 to 25 bar, more preferably in the range from 14 to 20 bar. This is advantageous in order to remove bulk material from the wall of the hold relatively quickly and with relatively little damage.
  • an average flow rate of the pulsating compressed gas stream is in the range from 1 to 65 m 3 per minute, preferably in the range from 1 to 25 m 3 per minute, more preferably in the range from 5 to 35 m 3 per minute. This is favourable in order to reduce dust formation during the removal of bulk material.
  • the pulsating compressed gas stream pulsates in the range from 5 - 200 Hz. This is favourable in order to remove the bulk material relatively quickly.
  • the pulsating compressed gas stream is formed substantially as a curtain at the location of the dispensing opening, preferably with a thickness in the range from 2 - 15 cm, preferably in the range from 5 - 15 cm.
  • a substantially curtain-shaped pulsating compressed gas stream is favourable in order to obtain a pulsating air blade for removing the bulk material by means of a relatively large force.
  • the invention relates to a method for using a pulsating compressed gas stream to clean a wall by means of a system according to the first aspect of the present invention, the method comprising the following steps:
  • the liquid is introduced in the pulsating compressed gas stream at a liquid pressure which is greater than the pressure of the compressed gas stream. This is favourable in order to prevent dust formation during cleaning of the wall at a relatively limited flow rate of the liquid, such as for example during the removal of a bulk material from a wall of a ship's hold.
  • the pulsating compressed gas stream is substantially curtain-shaped in order to remove a bulk material having a density of less than 800 kg/m 3 . It has been found that a substantially curtain-shaped pulsating compressed gas stream produces surprisingly good results for material having a density of less than 800 kg/m 3 , such as for example maize, wood pellets, soy and flour.
  • the pulsating compressed gas stream is substantially funnel-shaped or cone-shaped in order to remove a bulk material having a density greater than 800 kg/m 3 .
  • a substantially funnel-shaped or cone-shaped pulsating compressed gas stream has been found to be surprisingly favourable for material having a density greater than 800 kg/m 3 , such as for example ore, coal and sand.
  • the present invention relates to a use of the method according to the third aspect of the present invention for removing a bulk material from a wall of a ship's hold.
  • the advantages of this use of the method are analogous to the method according to the third aspect of the present invention.
  • Fig. 1 shows a cross section of a system according to the present invention
  • Figs. 2 - 3 show a vehicle provided with a system according to the first aspect of the present invention.
  • the system 1 shown in Fig. 1 is provided with a pressure device formed by a compressor 3 in order to produce a compressed gas stream.
  • the compressor 3 is connected to a dispensing device 5.
  • the dispensing device 5 has a dispensing opening formed by a nozzle 7 for dispensing the pulsating compressed gas stream which can be produced by the compressor 3 and the dispensing device 5.
  • the dispensing device 5 is provided with a blocking device formed by a ball valve 1 1 which can be driven by a drive mechanism 9. When the drivable ball valve 1 1 is driven, the delivery of the compressed gas stream can be interrupted, as a result of which a pulsating compressed gas stream can be produced.
  • the dispensing device 5 is furthermore provided with a connection 23 for connecting a high-pressure water supply 25. The liquid supplied via connection 23 can be supplied to the pulsating compressed gas stream via a second connection 31 .
  • the geometrical form of the gas stream to be dispensed by the dispensing device 5 at the nozzle 7 is adjustable by an adjustment member 13 which is provided in a dispensing chamber 17 of the dispensing device 5. By moving the adjustment member 13 in such a way that the passage opening in the dispensing device 5 is reduced, an increase in the outflow velocity from the nozzle 7 can be achieved.
  • further flow elements 15 are provided in order to produce a desired flow profile from the nozzle 7.
  • the flow elements 15 are configured so as to cause the pulsating gas stream emerging from the nozzle 7 to alternately emerge from the nozzle 7 at a different angle.
  • a nozzle part 19 which surrounds the nozzle 7 and forms part of the dispensing device 5 is rotatable about a rotation axis 21 .
  • the nozzle part 19 is provided with a gear ring 27 with which a drive mechanism formed by a hydromotor 29 engages to rotate the nozzle part 19. This is favourable in order to produce an additional movement of the gas stream on the bulk material to be removed in addition to the pulsation of the gas stream. Due to the fact that the nozzle 7 encloses an angle with the rotation axis 21 , the additional movement is increased.
  • a compressed gas stream in the range from 14 - 20 bar is produced.
  • This compressed gas stream is supplied to the dispensing device 5.
  • the ball valve 1 1 is driven in such a way that it alternately unblocks and blocks the compressed gas stream at a frequency in the range from 5 - 200 Hz in order to produce a pulsating compressed gas stream.
  • Water at a pressure in the range from 100 - 800 bar is added to the resulting pulsating compressed gas stream before the pulsating compressed gas stream is introduced in the dispensing chamber 17.
  • pulsating compressed gas stream is passed along the adjustment member 13 and the flow elements 15 in order to produce a substantially curtain-shaped gas flow which emerges from the nozzle 7 at an alternately varying angle.
  • the nozzle part 19 is rotated about rotation axis 21 and the resulting rotating curtain is moved along the wall of the ship's hold in order to remove bulk material from the wall.
  • Figs. 2 and 3 show vehicles 100 and 200 provided with a system 1 according to the first aspect of the present invention.

Abstract

L'invention concerne un système (1) pour retirer un matériau en vrac d'une paroi d'une cale de navire en utilisant un flux de gaz comprimé pulsé, le système comprenant : un dispositif de pression (3) destiné à fournir un flux de gaz comprimé ; un dispositif de distribution (5) qui est relié au dispositif de pression pour produire un flux de gaz du flux de gaz comprimé qui peut être fourni par le dispositif de pression, le dispositif de distribution étant pourvu d'une ouverture de distribution (7) servant à distribuer le flux de gaz comprimé pulsé à travers l'ouverture de distribution en vue de retirer le matériau en vrac ; un dispositif de blocage (11) destiné à bloquer la distribution du flux de gaz comprimé à travers l'ouverture de distribution dans une première position et à débloquer la distribution du flux de gaz comprimé à travers l'ouverture de distribution dans une deuxième position, de telle sorte qu'un flux de gaz comprimé pulsé peut être produit. L'invention concerne également un véhicule et un procédé pour retirer un matériau en vrac d'une paroi de la cale d'un navire en utilisant un flux de gaz comprimé pulsé.
PCT/NL2018/050163 2017-03-15 2018-03-15 Système, véhicule et procédé pour retirer un matériau en vrac de la paroi d'une cale d'un navire en utilisant un flux de gaz comprimé pulsé WO2018169399A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2018524 2017-03-15
NL2018524A NL2018524B1 (nl) 2017-03-15 2017-03-15 Systeem, voertuig en werkwijze voor het met een pulserende gecomprimeerde gasstroom van een wand van een ruim van een schip verwijderen van een bulkgoed

Publications (1)

Publication Number Publication Date
WO2018169399A1 true WO2018169399A1 (fr) 2018-09-20

Family

ID=62165604

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2018/050163 WO2018169399A1 (fr) 2017-03-15 2018-03-15 Système, véhicule et procédé pour retirer un matériau en vrac de la paroi d'une cale d'un navire en utilisant un flux de gaz comprimé pulsé

Country Status (2)

Country Link
NL (1) NL2018524B1 (fr)
WO (1) WO2018169399A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940072A (en) * 1973-10-11 1976-02-24 Tokico Ltd. Spray-ejecting device
US4067150A (en) * 1975-11-03 1978-01-10 Argonite, Inc. Sandblast abrading apparatus
US5860232A (en) * 1995-12-06 1999-01-19 Concept Engineering Group, Inc. Mobile safe excavation system having a deflector plate and vacuum source
US6102157A (en) * 1997-02-19 2000-08-15 Metro Machine Corporation Self-contained staging system for cleaning and painting bulk cargo holds
US6176437B1 (en) * 1993-10-15 2001-01-23 Mona Skannerup Blast gun for compressed air
US20140130383A1 (en) * 2011-04-26 2014-05-15 Steve Harrington Pneumatic Excavation System And Method Of Use
CN105171619A (zh) * 2015-09-28 2015-12-23 上海广成涂装技术工程有限公司 一种船体外壁自动喷砂系统
US20160243598A1 (en) * 2015-02-25 2016-08-25 Martin Engineering Company Air Cannon and Sonic Horn Combination for Dislodging Accumulated Bulk Material

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3940072A (en) * 1973-10-11 1976-02-24 Tokico Ltd. Spray-ejecting device
US4067150A (en) * 1975-11-03 1978-01-10 Argonite, Inc. Sandblast abrading apparatus
US6176437B1 (en) * 1993-10-15 2001-01-23 Mona Skannerup Blast gun for compressed air
US5860232A (en) * 1995-12-06 1999-01-19 Concept Engineering Group, Inc. Mobile safe excavation system having a deflector plate and vacuum source
US6102157A (en) * 1997-02-19 2000-08-15 Metro Machine Corporation Self-contained staging system for cleaning and painting bulk cargo holds
US20140130383A1 (en) * 2011-04-26 2014-05-15 Steve Harrington Pneumatic Excavation System And Method Of Use
US20160243598A1 (en) * 2015-02-25 2016-08-25 Martin Engineering Company Air Cannon and Sonic Horn Combination for Dislodging Accumulated Bulk Material
CN105171619A (zh) * 2015-09-28 2015-12-23 上海广成涂装技术工程有限公司 一种船体外壁自动喷砂系统

Also Published As

Publication number Publication date
NL2018524B1 (nl) 2018-09-24

Similar Documents

Publication Publication Date Title
US10537979B2 (en) Mobile wet abrasive blasting system utilizing automated valves to simplify setup and operational functions
US9925642B2 (en) Wet abrasive blasting system and method
US20130102232A1 (en) System and method for removing a coating from a substrate
KR101789244B1 (ko) 베이킹소다를 포함하는 습식 블라스트 공법을 이용한 세척장치 및 세척방법
JP2001237208A (ja) 研磨装置の研磨面洗浄方法及び洗浄装置
US9120203B2 (en) Scraper and sandblaster assembly and methods of use
US10076823B2 (en) Wet abrasive blasting system and method
US20200108484A1 (en) Static wet abrasive blasting system utilizing automated valves to simplify setup and operational functions
WO2018169399A1 (fr) Système, véhicule et procédé pour retirer un matériau en vrac de la paroi d'une cale d'un navire en utilisant un flux de gaz comprimé pulsé
EP2512738B1 (fr) Système et procédé pour sabler des objets avec un mélange de liquide et d'abrasif
TWI759350B (zh) 修整方法及修整裝置
US20190076988A1 (en) Portable surface cleaning apparatus
WO2007030062A1 (fr) Dispositif permettant d'eliminer par rincage un materiau en poudre au niveau d'une courroie de transporteur
US5904612A (en) Surface treating device
JP3013053B2 (ja) ブラスト装置
KR101217062B1 (ko) 하이브리드 세척시스템
JP4208212B2 (ja) 洗浄方法
AU685975B2 (en) Improved road repair machines
JP4173754B2 (ja) 洗浄装置
JPH0677898B2 (ja) 被研掃物に連続的に研掃および空気吹付けを行なう装置
KR102546562B1 (ko) 교량의 도장 및 녹 제거장치
JP2720208B2 (ja) 研掃装置
JPS6363350B2 (fr)
SU880915A1 (ru) Струйный насос транспортировани сыпучих материалов
JP2004122296A (ja) アイスウォーターブラスト装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18724624

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18724624

Country of ref document: EP

Kind code of ref document: A1