EP4205905A1 - Vorrichtung zum ferngesteuerten hochdruckunterwasserschneiden mit abrasivmittel, und verfahren zum schneiden sowie zum zuführen eines abrasivmittels - Google Patents
Vorrichtung zum ferngesteuerten hochdruckunterwasserschneiden mit abrasivmittel, und verfahren zum schneiden sowie zum zuführen eines abrasivmittels Download PDFInfo
- Publication number
- EP4205905A1 EP4205905A1 EP21218277.8A EP21218277A EP4205905A1 EP 4205905 A1 EP4205905 A1 EP 4205905A1 EP 21218277 A EP21218277 A EP 21218277A EP 4205905 A1 EP4205905 A1 EP 4205905A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- abrasive
- pressure
- nozzle
- water
- 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.)
- Pending
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 99
- 239000003082 abrasive agent Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000005291 magnetic effect Effects 0.000 claims abstract description 10
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 4
- 230000006698 induction Effects 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000005294 ferromagnetic effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/04—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
- B24C1/045—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass for cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
- B24C3/06—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other movable; portable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
- B24C7/0069—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with means for preventing clogging of the equipment or for preventing abrasive entering the airway
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
- B24C7/0076—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier the blasting medium being a liquid stream
Definitions
- the present inventions relate to an underwater, remote-controlled high pressure cutting device with addition of abrasive material and to an abrasive material feeding method as well as to a cutting method, in order to increase energy of an abrasive fluid jet affecting on a surface unit of a construction or an object, which is cut (Se - specific energy), enabling to manoeuvre with the cutting device by an underwater ROV without exerting a torsional force on the ROV resulting from the weight of the device in the water, consisting of a clamping system to a surface of an object capable to compensate the jet force generated by a high-pressure fluid jet and maintaining adhesion despite the loss of energy supply, as well as system of feeding underwater cutting nozzle with abrasive material.
- Abrasive water injection jets AWAJ
- AWSJ abrasive water suspension jets
- the abrasive material is applied to the water.
- the abrasive agent is fed through a pneumatic conduit connected directly to the cutting nozzle, in which the mixing chamber is located. An abrasive agent is sucked in due to the vacuum produced by the rushing liquid and it hits a material being cut at high speed.
- the concentration of abrasive in relation to water is assumed to be about 10%.
- AWIJ cutting is almost exclusive method.
- an abrasive agent is mixed with water under pressure in a special pressure tank and then a suspension of water with abrasive is transported to the nozzle under pressure.
- the concentration of the abrasive in relation to the water is, as in the case of AWIJ, 10%.
- the main problem in the use of AWIJ under water is the water ingress into the pneumatic conduit, which supplies the abrasive agent to the cutting nozzle.
- water is supplied from a high-pressure pump or a pressure multiplier through high-pressure hoses to the cutting nozzle, in which, due to the reduction of the flow diameter, the liquid speed is increased, which creates a vacuum in the laterally connected pneumatic conduit through which the abrasive material is sucked in.
- abrasive material and air sucked in from the pneumatic conduit is ejected at high speed towards the object or structure being cut.
- the underwater, remote-controlled, abrasive cutting device is characterized by that:
- detachable magnets In order to attach the cutting device to a steel structure or an object with a ferromagnetic coating, such as a UXO object, detachable magnets are used, the magnetic field of which is neutralized only when disconnected. The neutralization of the magnetic field takes place by applying current to a coil wound around the magnet, and the same current application generates a field opposite to the field of a permanent magnet, thanks to which the cutting device can be detached from the steel structure.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21218277.8A EP4205905A1 (de) | 2021-12-30 | 2021-12-30 | Vorrichtung zum ferngesteuerten hochdruckunterwasserschneiden mit abrasivmittel, und verfahren zum schneiden sowie zum zuführen eines abrasivmittels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21218277.8A EP4205905A1 (de) | 2021-12-30 | 2021-12-30 | Vorrichtung zum ferngesteuerten hochdruckunterwasserschneiden mit abrasivmittel, und verfahren zum schneiden sowie zum zuführen eines abrasivmittels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4205905A1 true EP4205905A1 (de) | 2023-07-05 |
Family
ID=80447411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21218277.8A Pending EP4205905A1 (de) | 2021-12-30 | 2021-12-30 | Vorrichtung zum ferngesteuerten hochdruckunterwasserschneiden mit abrasivmittel, und verfahren zum schneiden sowie zum zuführen eines abrasivmittels |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP4205905A1 (de) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209952A (en) * | 1977-09-12 | 1980-07-01 | F. A. Hughes And Company Limited | Underwater jet blasting apparatus |
| US4545317A (en) * | 1981-04-01 | 1985-10-08 | Gkss-Forschungszentrum Geesthacht Gmbh | Device for treating the surfaces of structures and ships |
| EP0335503A2 (de) * | 1988-03-02 | 1989-10-04 | Cleaning Technology Limited | Reinigen oder Schneiden mittels eines Abrasivsstrahles |
| FR2699852A1 (fr) * | 1992-12-29 | 1994-07-01 | Gaz De France | Procédé et dispositif d'usinage à jet de fluide haute pression asservi. |
| US6049580A (en) * | 1995-11-30 | 2000-04-11 | Compagnie Generale Des Matieres Nucleaires | Apparatus for remote dismantling of irradiated structures |
| US6358120B1 (en) * | 2000-06-14 | 2002-03-19 | Framatome Anp. Inc. | Vision enhanced under water waterjet |
| US20130196274A1 (en) | 2012-01-13 | 2013-08-01 | Broco, Inc. | Underwater torch |
| EP2755802B1 (de) | 2011-09-14 | 2016-04-06 | ANT Applied New Technologies AG | Wasser-abrasiv-suspensions-schneidanlage |
| US20160144439A1 (en) | 2012-12-12 | 2016-05-26 | Oceaneering International, Inc. | Underwater Diamond Wire Saw |
| US9446500B2 (en) * | 2012-09-25 | 2016-09-20 | G.D.O. Inc. | Underwater abrasive entrainment waterjet cutting method |
| KR20170067691A (ko) * | 2017-05-15 | 2017-06-16 | 유한기술주식회사 | 수중 금속 구조물 절단용 워터젯 장치 및, 이를 이용한 수중 금속 구조물 절단 공법 |
-
2021
- 2021-12-30 EP EP21218277.8A patent/EP4205905A1/de active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209952A (en) * | 1977-09-12 | 1980-07-01 | F. A. Hughes And Company Limited | Underwater jet blasting apparatus |
| US4545317A (en) * | 1981-04-01 | 1985-10-08 | Gkss-Forschungszentrum Geesthacht Gmbh | Device for treating the surfaces of structures and ships |
| EP0335503A2 (de) * | 1988-03-02 | 1989-10-04 | Cleaning Technology Limited | Reinigen oder Schneiden mittels eines Abrasivsstrahles |
| FR2699852A1 (fr) * | 1992-12-29 | 1994-07-01 | Gaz De France | Procédé et dispositif d'usinage à jet de fluide haute pression asservi. |
| US6049580A (en) * | 1995-11-30 | 2000-04-11 | Compagnie Generale Des Matieres Nucleaires | Apparatus for remote dismantling of irradiated structures |
| US6358120B1 (en) * | 2000-06-14 | 2002-03-19 | Framatome Anp. Inc. | Vision enhanced under water waterjet |
| EP2755802B1 (de) | 2011-09-14 | 2016-04-06 | ANT Applied New Technologies AG | Wasser-abrasiv-suspensions-schneidanlage |
| US20130196274A1 (en) | 2012-01-13 | 2013-08-01 | Broco, Inc. | Underwater torch |
| US9446500B2 (en) * | 2012-09-25 | 2016-09-20 | G.D.O. Inc. | Underwater abrasive entrainment waterjet cutting method |
| US20160144439A1 (en) | 2012-12-12 | 2016-05-26 | Oceaneering International, Inc. | Underwater Diamond Wire Saw |
| KR20170067691A (ko) * | 2017-05-15 | 2017-06-16 | 유한기술주식회사 | 수중 금속 구조물 절단용 워터젯 장치 및, 이를 이용한 수중 금속 구조물 절단 공법 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
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