EP1208944A1 - Procede de remplissage d'un reservoir sous pression et dispositif d'obtention d'un jet de boue - Google Patents

Procede de remplissage d'un reservoir sous pression et dispositif d'obtention d'un jet de boue Download PDF

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Publication number
EP1208944A1
EP1208944A1 EP00125771A EP00125771A EP1208944A1 EP 1208944 A1 EP1208944 A1 EP 1208944A1 EP 00125771 A EP00125771 A EP 00125771A EP 00125771 A EP00125771 A EP 00125771A EP 1208944 A1 EP1208944 A1 EP 1208944A1
Authority
EP
European Patent Office
Prior art keywords
line
container
pressure
filling
abrasive
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.)
Withdrawn
Application number
EP00125771A
Other languages
German (de)
English (en)
Inventor
Linde Marco
Rentsch Thorsten
Knipp Thomas
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.)
ANT Applied New Technologies AG
Original Assignee
ANT Applied New Technologies AG
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 ANT Applied New Technologies AG filed Critical ANT Applied New Technologies AG
Priority to EP00125771A priority Critical patent/EP1208944A1/fr
Priority to DE20023177U priority patent/DE20023177U1/de
Publication of EP1208944A1 publication Critical patent/EP1208944A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier

Definitions

  • the present invention relates to the technical field of water abrasive suspension blasting (WASS) and there specifically the bypass principle for generation by WASS.
  • WASS water abrasive suspension blasting
  • Water abrasive suspension blasting is used, for example used in dismantling technology under and above water.
  • Example shell jackets disassembled to avoid flying sparks to be able to remove and dispose of the explosive contained therein.
  • proven has the abrasive water suspension blasting also in the dismantling of nuclear power plants, especially when dismantling highly radioactive components, such as for example the reactor pressure vessel.
  • Other areas of application are Offshore technology, as well as in the petrochemical industry when it comes to disconnection in a potentially explosive atmosphere is possible.
  • the devices operating on the bypass principle essentially exist from a high pressure pump, which uses water as a carrier liquid in a Main line with throttle element and parallel to a secondary line (bypass) promotes.
  • the secondary line opens into a pressure vessel in which the abrasive is located, with the liquid flow conducted in the secondary line passes through the pressure vessel, takes abrasive there and over a Line from the pressure vessel is fed back to the main line. be wearing this suspension is fed through a discharge nozzle, which has a flexible Pipe possibly several hundred meters away from the device can be arranged.
  • the amount of the Available abrasives depend on the size of the pressure vessel. If the abrasive in the pressure vessel has been used up, must the pressure vessel is filled and the water abrasive suspension blasting while be interrupted this time.
  • a generic device is known from EP 0 276 219 B1, in which only a pressure vessel is provided before the high pressure pump is filled switched off and the suspension jet is interrupted.
  • a circulation path is provided within the system, in which the abrasive together with liquid from a storage container into the pressure container is suctioned off, the liquid from there again to the storage container arrives.
  • the cable duct through the pressure vessel is designed so that the abrasive settles in it, whereas the liquid is returned to the reservoir in the return.
  • the device-like Structure of the circulation path for filling, decoupled from the main flow the pressure vessel is also high. Those provided within the orbit Fittings must be designed so that they are in their Function does not work due to the inevitable deposit of abrasive are impaired.
  • the task of the present invention is based on this prior art to create a method for filling a pressure vessel with that this is simple, fast and with little device effort can be filled.
  • a corresponding device be created with which this method can be carried out, which is inexpensive the manufacture and constructively largely against abrasive deposits is protected.
  • the basic idea of the present invention is based on the prior art Technology known circulation path for filling the pressure vessel with abrasive to be completely dispensed with and instead to provide a pressure filling which without an expensive and wear-prone suction pump.
  • This pressure filling via a pressurized filling container enables the pressure vessel to be filled much faster than that Vacuum filling via the circulation route. It can also Differences in height between the filling container and the pressure container are overcome, what the structural design of the corresponding system essential simplified, in particular also allows a compact design.
  • a connection to the local Water supply network is available or a pressure accumulator such as a carbon dioxide cartridge or a container with compressed air is used.
  • a pressure accumulator such as a carbon dioxide cartridge or a container with compressed air is used. The latter is for example in underwater applications from Advantage.
  • the filling container is expediently designed in such a way that it can be filled with Pressurizing line in the upper area of the same opens, the Line between filling tank and pressure tank in the lower area of the Filling container connects.
  • the filling line opens on the pressure tank side in the upper area so that it is ensured that when the Filling container and opened filling line always the abrasive through the Filling line is discharged into the pressure tank until the filling tank is complete is emptied.
  • a disposal line is expediently provided on the pressure vessel side provided for the removal of carrier liquid, which during the Filling process displaced by the abrasive in the pressure vessel or into the pressure vessel has been funded.
  • the filling container itself can be filled directly with a suitable filling aid be filled with abrasive above or expediently over a another pressureless container (hopper), which is arranged above the filling container and the one at its lower end in the upper area of the filling container has an outlet pipe via which the unpressurized one in the container Abrasives conveyed by gravity in the pressurized ones ordered below Filling container (hopper) arrives.
  • This further pressureless filling container can either be designed as an interchangeable container or funnel-like and open at the top. To promote the discharge of gravity through the downpipe the hopper is expediently also filled with carrier liquid.
  • At least part of the disposal line is also used as Flushing line used.
  • Flushing line used.
  • Such a rinsing process is regularly at the end of a Filling process, but at least initiated when overfilling, i.e. it will counter the filling direction carrier liquid through the disposal line, through the pressure vessel from there into the filling line into the filling container any abrasive that may have entered the area of the shut-off valves removing any. In this way it can always be ensured that the valves remain largely free of abrasives, which means that valve wear is eliminated can be significantly reduced or, conversely, less complex valves Can find use.
  • the device shown in the figure is used to generate a beam of Suspension of a carrier liquid 1, usually water, and a Abrasive 9, for example corundum or garnet sand under high pressure.
  • the Carrier liquid 1 is from a container 2 or from a (not shown) Supply network of a high pressure pump 3, which is typically generates a pressure between 200 and 2000 bar on the outlet side.
  • a Line 4 is the high-pressure carrier liquid 1 from the pump 3 through a check valve 5 in parallel in a main line 6 and a Branch line 7 promoted.
  • a throttle element 8 is provided in the main line 6, that it is dimensioned and adjusted so that in addition to a main stream forming in the main line 6 through the secondary line 7 leading secondary flow sets, which is located in a pressure vessel 10 Abrasive 9 picks up, this feeds the main stream and then as Total flow at a discharge nozzle 11 exiting under high pressure To form a suspension jet of carrier liquid 1 and abrasive 9.
  • the secondary line 7 initially has a throttle element in the conveying direction 12, then a shut-off valve 13 and a safety device 14, which opens when a predetermined maximum pressure is exceeded.
  • the branch line 7 opens into the top of the pressure vessel 10.
  • the pressure vessel 10 has an approximately conically tapering bottom 15 over which lowest point with a short distance, a riser pipe 16 ends, which has a Line 17, which forms part of the secondary line 7, connected to the main line 6 is.
  • a shut-off valve 18 is incorporated within line 17.
  • a line opens into the part of the secondary line 7 on the pressure vessel side 19, which is connected via a shut-off valve 20.
  • This line 19 forms part a flushing line 21, which is connected to a flushing agent source via a shut-off valve 22, Usually a tap water connection 23 is connected.
  • Line 19 opens into a disposal vessel 24 or a further one (not shown) Disposal line and is beyond the connection to line 21 provided with a further shut-off valve 25.
  • a filling container 29 In the pressure vessel 10 opens in the upper area, but with certain Distance from the top of a filling line 26, which has a shut-off valve 27 is lockable and at its other end a short distance above the Bottom 28 of a filling container 29 (pressure hopper) opens out.
  • This print shopper 29 is constructed similarly to the pressure vessel 10, it has a conical shape bottom tapered bottom 28 and is hermetically lockable.
  • an overflow line 30 opens out a shut-off valve 31 is connected to the line 19 and the flushing line 21.
  • a short distance below the mouth of the overflow line 30 opens in the filling container 29, a down pipe 32, which has a shut-off valve 33 in the bottom of a further filling container 34 (hopper) which opens over the print hopper 29 is arranged.
  • a pressure line 35 opens below the shut-off valve 33, which via a shut-off valve 36 with a pressure source, here another pressurized Tap water connection 23 is connected.
  • the pressure vessel 10 is filled by means of the pressure hopper 29, which too must also be filled for this purpose.
  • Filling the pressure hopper 29 takes place via the hopper 34 arranged above, which is open at the top and in the Abrasive 9 and also in smaller amounts of carrier liquid 1 from above be filled in.
  • the shut-off valve 33 By opening the shut-off valve 33, the content of the Hoppers 34 via the downpipe 32 by gravity into the pressure hopper 29 promoted.
  • the sizes of the containers are coordinated so that the Container content of the hopper 34 can be completely emptied into the pressure hopper 29.
  • the shut-off valves 25 are during this filling process of the pressure hopper 29 and 31 to open, so that any excess carrier liquid 1 when filling the pressure hopper 29 outdoors or into the disposal container 24 can escape.
  • shut-off valves 31 and 33 are brought into their closed position. Should the content of the hopper 34 is not completely emptied into the print hopper 29 can be, so that still abrasive in the down pipe 32 and thus also is in the area of the shut-off valve 33, initially only the shut-off valve 31 closed and the shut-off valve 36 opened so that the shut-off valve 33 can be flushed out of the detergent source 23 by tap water.
  • a line section of line 32 is expediently in the immediate vicinity Neighboring the shut-off valve 33 is made transparent to by visual inspection to be able to determine whether there are 33 abrasives in the area of the valve located or not.
  • the result is as in the level shown below the mouth of the downpipe 32 with clear distance to the mouth of the overflow line 30.
  • the shut-off valves 31 and 33 are closed, the shut-off valves 27, 20 and 25, however, are open.
  • the shut-off valve 36 opened, whereby the pressure hopper 29 via the pressure medium source 23 and line 35 is pressurized.
  • the abrasive 9 located in the pressure hopper 29 comes together with the carrier liquid 1 via the filling line 26 into the pressure vessel 10.
  • the excess carrier liquid that arises in the pressure vessel 10 1 escapes via line 19 into the open or into the disposal container 24.
  • the Druckhopper 29 is dimensioned so that its content after discharge in the Pressure vessel 10 fills the latter almost completely, so that from the Figure apparent level below the mouth in fill line 26 with a clear Distance to the mouth of line 7 in the upper area of the pressure vessel 10 forms.
  • the filling lines are expediently backwashed to ensure that the shutoff valves are clear of Abrasives are, especially at high filling pressures, not only when Overfilling, but also during the normal filling process, at least in smaller ones Quantities are discharged from the pressure vessel 10.
  • This will be done first once the Druckhopper 29 by closing the shut-off valve 36 and opening of the shut-off valve 33 is depressurized, then the shut-off valve 25 closed.
  • the first thing to do is Rinse water via line 21 into line 30 and through the shut-off valve 31, which must then also be closed at the latest, so that the rinsing liquid then via line 21 into line 19, through the shut-off valve 20 in the Pressure vessel 10 arrives.
  • shut-off valve 27 in the pressure hopper 29 and through the shut-off valve 33 and the Down pipe 32 into hopper 34, where it remains for the next filling process.
  • shut-off valves 20 and 27 after which the Shut-off valves 13 and 18 are opened and the high pressure pump 3 for proper discharge operation is switched on via the nozzle 11.
  • a transverse bore 38 is provided, which in the intended discharge operation ensures that the thick suspension rising from the bottom 15 of the container 10 from abrasive 9 and carrier liquid 1 further with carrier liquid is diluted before it is fed via line 17 into the main flow of line 6 entry.
  • the above-described filling device does not require an additional pump for the filling process if a tap water connection with a pressure between 5 and 10 bar is used as the pressure medium connection 23 as described above. If such a pressure medium source is not present, then a simple centrifugal pump can be used instead of the usual structurally complex membrane pump known from the prior art in order to convey carrier liquid into the lines 35 and 21. Alternatively, a pressure accumulator, for example a CO 2 cartridge, can also be used as the pressure medium source, but after each filling operation the pressure hopper must then be filled not only with abrasive but also with carrier liquid.
  • a direct filling of the abrasive into the down pipe 32 or a replaceable cartridge filled with the abrasive can also be provided.
  • the filling process of the pressure vessel 10 can be considerably accelerated by increasing the pressure of the pressure medium source 23, so that the filling times of the system can be reduced to a minimum.
  • the filling described above can also be used for systems that work alternately with two pressure vessels or also for systems with different mixing principles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP00125771A 2000-11-24 2000-11-24 Procede de remplissage d'un reservoir sous pression et dispositif d'obtention d'un jet de boue Withdrawn EP1208944A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00125771A EP1208944A1 (fr) 2000-11-24 2000-11-24 Procede de remplissage d'un reservoir sous pression et dispositif d'obtention d'un jet de boue
DE20023177U DE20023177U1 (de) 2000-11-24 2000-11-24 Vorrichtung zur Erzeugung eines Strahls einer Suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00125771A EP1208944A1 (fr) 2000-11-24 2000-11-24 Procede de remplissage d'un reservoir sous pression et dispositif d'obtention d'un jet de boue

Publications (1)

Publication Number Publication Date
EP1208944A1 true EP1208944A1 (fr) 2002-05-29

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EP00125771A Withdrawn EP1208944A1 (fr) 2000-11-24 2000-11-24 Procede de remplissage d'un reservoir sous pression et dispositif d'obtention d'un jet de boue

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EP (1) EP1208944A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018177557A1 (fr) * 2017-03-31 2018-10-04 Ant Applied New Technologies Ag Installation et procédé de découpe par jet d'eau chargée d'abrasif en suspension
WO2018177559A1 (fr) * 2017-03-31 2018-10-04 Ant Applied New Technologies Ag Installation et procédé de découpe par jet d'eau chargée d'abrasif en suspension
WO2018197018A1 (fr) * 2017-04-28 2018-11-01 Ant Applied New Technologies Ag Installation de découpe par jet d'eau chargée d'abrasif en suspension

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987002290A1 (fr) * 1985-10-10 1987-04-23 The British Hydromechanics Research Association Alimentation en materiau abrasif
DE4430130A1 (de) * 1994-08-25 1996-02-29 Fischer Artur Werke Gmbh Verfahren zur Herstellung von ineinandergreifenden Metallteilen
DE19705401A1 (de) * 1997-02-13 1998-08-20 Kaesch Optiblast System Gmbh Verfahren und Vorrichtung zum Einschlämmen von feuchtem Strahlmittel in einen Strahlkessel
WO1999014015A1 (fr) * 1997-09-16 1999-03-25 Donald Stuart Miller Jets abrasifs fluides pour usinage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987002290A1 (fr) * 1985-10-10 1987-04-23 The British Hydromechanics Research Association Alimentation en materiau abrasif
DE4430130A1 (de) * 1994-08-25 1996-02-29 Fischer Artur Werke Gmbh Verfahren zur Herstellung von ineinandergreifenden Metallteilen
DE19705401A1 (de) * 1997-02-13 1998-08-20 Kaesch Optiblast System Gmbh Verfahren und Vorrichtung zum Einschlämmen von feuchtem Strahlmittel in einen Strahlkessel
WO1999014015A1 (fr) * 1997-09-16 1999-03-25 Donald Stuart Miller Jets abrasifs fluides pour usinage

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018177557A1 (fr) * 2017-03-31 2018-10-04 Ant Applied New Technologies Ag Installation et procédé de découpe par jet d'eau chargée d'abrasif en suspension
WO2018177559A1 (fr) * 2017-03-31 2018-10-04 Ant Applied New Technologies Ag Installation et procédé de découpe par jet d'eau chargée d'abrasif en suspension
CN110709209A (zh) * 2017-03-31 2020-01-17 艾恩特应用新技术公司 水磨料悬浮液切割设备和水磨料悬浮液切割方法
CN110719827A (zh) * 2017-03-31 2020-01-21 艾恩特应用新技术公司 水磨料悬浮液切割设备和水磨料悬浮液切割方法
CN110719827B (zh) * 2017-03-31 2021-11-09 艾恩特应用新技术公司 水磨料悬浮液切割设备和水磨料悬浮液切割方法
CN110709209B (zh) * 2017-03-31 2022-07-19 艾恩特应用新技术公司 水磨料悬浮液切割设备和水磨料悬浮液切割方法
US11511392B2 (en) 2017-03-31 2022-11-29 Ant Applied New Technologies Ag Water abrasive suspension cutting system and method for water abrasive suspension cutting
US11904435B2 (en) 2017-03-31 2024-02-20 Ant Applied New Technologies Ag Water-abrasive-suspension cutting system and method for water-abrasive-suspension cutting
WO2018197018A1 (fr) * 2017-04-28 2018-11-01 Ant Applied New Technologies Ag Installation de découpe par jet d'eau chargée d'abrasif en suspension

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