EP0815388A1 - Flexible lanze zum bearbeiten oder inspizieren eines rohrbodens eines dampferzeugers - Google Patents
Flexible lanze zum bearbeiten oder inspizieren eines rohrbodens eines dampferzeugersInfo
- Publication number
- EP0815388A1 EP0815388A1 EP96905723A EP96905723A EP0815388A1 EP 0815388 A1 EP0815388 A1 EP 0815388A1 EP 96905723 A EP96905723 A EP 96905723A EP 96905723 A EP96905723 A EP 96905723A EP 0815388 A1 EP0815388 A1 EP 0815388A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- band
- flexible
- flexible lance
- lance
- supply line
- 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.)
- Granted
Links
- 238000007689 inspection Methods 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 20
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 2
- 108090000623 proteins and genes Proteins 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 15
- 239000007788 liquid Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/483—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers specially adapted for nuclear steam generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
Definitions
- the invention relates to a device for machining or inspecting a tube sheet of a steam generator.
- these deposits are referred to as deposit kidneys. They arise because loose deposits remain in the poorly flowed inside area of the heating tube bundle, while in the better flowed outside area they are entrained by the flow of the feed water flow on the secondary side. With increasing operating time, these deposits adhere more and more firmly to the tube sheet. Through further accumulation processes, in the course of several operating cycles, deposit conglomerates with an increased metal and salt concentration compared to loose impurities increase in an extent of several centimeters.
- a flexible spray lance which has a spray head with a plurality of nozzles at its free end, from which the spray liquid emerges.
- the flexible spray lance is made up of a flexible band in which there are channels with a circular cross-section. Metallic capillaries are inserted into these channels, through which the spray liquid flows to the spray head. leads.
- the band and the channels are made in one piece by extrusion from a plastic.
- the belt is mounted in a rigid guide with a curved end, with which it can be deflected by a predetermined angle.
- the rigid guide is mounted in a transport device which can be introduced into the tube lane of the steam generator and can be moved along this tube lane.
- To drive the belt several jointly driven gear wheels are provided, the teeth of which correspond to one another
- the free end of the spray lance is aligned with the pipe gap through the curved end of the rigid guide.
- a device for cleaning the tube sheet in which instead of a spray lance constructed from a one-piece flexible band, a flexible band composed of a plurality of interconnected individual members is provided by that a high pressure hose is guided. Additional cables can be inserted in this band to increase its stability.
- Such a segmented belt is also used in the devices for inspecting and processing the tube sheet known from US Pat. No. 5,065,703 and US Pat. No. 5,286, 154, in which inspection optics and mechanical processing tools, for example drills or grippers, are used on the processing head ⁇ tools are used.
- inspection optics and mechanical processing tools for example drills or grippers
- the segments which are connected to one another are so wide, however, that very narrow pipe gaps, such as are present in heating pipe bundles with a triangular division, can no longer be traveled.
- a flexible spray lance is known, which is constructed from a band made of spring steel, on which one or more capillaries for the spray liquid are attached on one side.
- the capillaries are wave-shaped and open downwards at the free end of the band into a semicircular recess on the underside of the band, so that the spray liquid emerging from them is directed downwards onto the tube sheet.
- the narrow sides of the belt are guided in grooves in an upper and a lower plate, which are introduced into the tube lane of the steam generator.
- the groove in the lower plate causes the strip to be deflected onto a pipe gap.
- the belt is driven by a pushing force exerted on the belt from behind. This requires a high degree of flexural rigidity of the strip and is also only possible with steam generators in which a hand hole is arranged at the same height as the pipe lane.
- the invention is based on the object, a flexible lance for processing and inspecting the tube sheet
- a flexible lance for processing or inspecting a tube sheet of a steam generator contains a flexible metallic band which has recesses arranged one behind the other in its longitudinal direction , through which a flexible supply line is threaded for a processing or inspection head arranged at the free end of the belt.
- a steel band is preferably provided.
- a spray head is provided as the machining device and a metallic capillary, in particular a capillary made of a nickel-titanium alloy, is provided as the processing line.
- an optical fiber cable is guided in the band as a supply line for an endoscope arranged at the free end of the band.
- a cable pull is provided as the supply line for transmitting a tensile force to a recovery tool arranged at the free end of the belt.
- a device for actuating a flexible lance according to the invention in a working position in the steam generator is illustrated in a plan view or in a side view parallel or transversely to a pipe lane.
- IG 4 and 5 show further configurations of a device for actuating a flexible lance according to the invention within the steam generator in a side view transverse to the Rohrgasse or in a top view.
- IG 6 and 7 show a side view (flat side) and a top view (narrow side) of an embodiment of a spray lance according to the invention. In 8, the free end of the spray lance is shown enlarged.
- FIGS. 9 and 10 show further configurations of a flexible lance.
- FIG. 11 shows a flexible lance with a gripping tool as the machining head.
- FIG. 1 shows a steam generator 2 in a horizontal partial section at the height of a hand hole 4.
- a tube plate 6 which is visible in plan view, a plurality of heating tubes 10 open inside a cylindrical guide jacket 8.
- a transport device is located in a tube alley 12 via the hand hole 4 20 introduced, with which a free end 53 of a flexible lance 50 can be introduced, starting from the pipe line 12, into a pipe gap 14 running perpendicular to the pipe line 12.
- a steam generator 2 is shown with a triangular arrangement of the heating pipes 10, in which there are particularly narrow pipe gaps 14.
- the flexible lance 50 is constructed from a band 52 on which supply lines 58, 66, 72 for supplying a processing or inspection head 63, 68, 70 arranged at the free end 53 are arranged.
- the transport device 20 comprises a slide plate 21 with which it is placed on the tube sheet 6.
- a walking mechanism is provided in the transport device 20, as is known, for example, from European Patent 0 084 867.
- the transport device 20 comprises two support bodies 22 and 24, which can be displaced relative to one another in a longitudinal axis 26 of the transport device by a pneumatically actuated piston 28.
- pneumatically extendable support elements 30 are provided in pairs, each of which is supported on opposite heating pipes 10 at the edge of the pipe lane 12.
- a feed device 40 On the transport device 20, a feed device 40 is arranged, which contains a motor-driven drive roller 41 and an associated guide roller 42 which is set against its circumference.
- the flexible lance 50 is inserted into the drive roller 41 and guide roller 42.
- the feed device 40 contains two further guide rollers 43 and 44 which are mounted against one another on their circumference and which take up the lance 50 threaded between the drive roller 41 and the guide roller 42 and at an angle ⁇ 1 to the longitudinal axis 26 and thus to a central axis 14 of the pipe line parallel thereto Set 12. In the example of the figure, this angle is 90 °, so that the lance 50 can be moved into the pipe gaps 14.
- the drive roller 41 and the guide roller 43 are coupled to one another by a circumferential belt 45.
- a belt 47 is also guided around the guide rollers 42 and 44 and a deflection roller 46, which lies in the area of the drive roller 41 on the belt 45.
- the deflection angle ⁇ 1 of the lance 50 is determined by the mutual position of the drive roller 41 and the guide rollers 42, 43 and 44 on the transport device 20.
- the feed device 40 can additionally be displaced relative to the transport device 20 parallel to the longitudinal axis 26 or rotated about a vertical axis in order to enable the flexible lance 50 to be precisely aligned with the pipe gaps 14.
- FIG. 2 shows how the lance 50 constructed from the band 52 is passed through the hand hole 4 from the outside. Since the band 52 cannot be bent in the plane defined by its flat sides and the tube sheet 6 is below the lower edge of the hand hole 4, the band 52 must be guided through the hand hole 4 with the flat side horizontally oriented and within the steam generator 2 by 90 ° are rotated.
- the feed device 40 is arranged in the transport device 20 so as to be pivotable about an axis of rotation 48 running parallel to the longitudinal axis 26.
- the free end 53 of the lance 50 can be positioned directly above the tube sheet 6 even with a different extension length 1.
- the feed device 40 is also mounted on a slide 28, which enables the height of the feed device 40 to be adjusted perpendicular to the longitudinal axis 26 and thus parallel to the heating tubes 10.
- a feed device 400 which is pivotable in its entirety about an axis 49 running parallel to the tube sheet, is provided.
- rollers 410, 420, 430 and 440 are provided for driving, deflecting and aligning the lance 50.
- a lance 50 contains a flexible metallic material which preferably consists of a chromium-nickel steel
- Band 52 with a wall thickness between 0.1 and 0.2 mm, into which recesses or holes 54 which are equidistant from one another parallel to its longitudinal direction are punched and form two rows 56a and 56b.
- a supply line 58 for example a capillary, for a processing head arranged at the free end 53, in the exemplary embodiment a fuel head 63, is threaded through these rows 56a and 56b.
- the capillaries 58 preferably consist of a memory metal consisting of a nickel-titanium alloy, for example a metal commercially available under the name Nitinol SE 502.
- Their compressive strength is greater than 1000 bar with an outside diameter between 2 and 3 mm.
- the capillaries 58 are guided through the holes 54 alternately from opposite sides of the band 52. Between the holes 54 of a row 56a or 56b, parallel to a longitudinal axis 62 of the band 52, groove-shaped formations or beads 60 with a semicircular cross-section are embossed into the band 52, which alternately alternately on one and on the other side of the band 52 are formed. In this way, the formations 60, together with the holes 54 in a row 56a or 56b, form a rectilinear channel into which the capillary 58 can simply be inserted.
- recesses in the form of narrow slots transversely to the longitudinal axis 62 can also be provided, through which the capillary 58 can be threaded.
- the capillaries 58 respectively assigned to the rows 56a and b are in the plane defined by the flat side of the band 52 at an angle ⁇ a or ⁇ b from a longitudinal axis 62 of the band 52 bent away.
- nozzles 64 At the end of the capillaries 58 there are preferably nozzles 64 in which the emerging spray jet is accelerated and exits from the outlet openings 65 at an angle ⁇ a or ⁇ b. Due to the symmetrical arrangement of the nozzles 64 relative to the longitudinal axis 62 and their arrangement in the plane of the band, this acts
- an optical fiber cable 66 of an endoscope 68 is inserted into the channel 56b, with which the spraying process can be observed.
- a band with three channels 56a, b, c is provided, two channels 56a, b are each provided with capillaries 58 for spraying and one channel 56c contains an optical fiber cable 66 of an endoscope 68.
- a gripping tool 70 for example, is arranged at the free end 53 of the lance 50 as a rescue tool.
- traction cables 72 are guided as supply lines through the holes 54, with which torque can be exerted on pivotably mounted pliers 74 and 76.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- High Energy & Nuclear Physics (AREA)
- Thermal Sciences (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Spray Control Apparatus (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19508802 | 1995-03-15 | ||
DE19508802 | 1995-03-15 | ||
PCT/DE1996/000449 WO1996028690A1 (de) | 1995-03-15 | 1996-03-13 | Flexible lanze zum bearbeiten oder inspizieren eines rohrbodens eines dampferzeugers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0815388A1 true EP0815388A1 (de) | 1998-01-07 |
EP0815388B1 EP0815388B1 (de) | 1999-11-17 |
Family
ID=7756401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96905723A Expired - Lifetime EP0815388B1 (de) | 1995-03-15 | 1996-03-13 | Flexible lanze zum bearbeiten oder inspizieren eines rohrbodens eines dampferzeugers |
Country Status (6)
Country | Link |
---|---|
US (1) | US6192904B1 (de) |
EP (1) | EP0815388B1 (de) |
JP (1) | JP3599745B2 (de) |
DE (1) | DE59603677D1 (de) |
ES (1) | ES2141477T3 (de) |
WO (1) | WO1996028690A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1124093A2 (de) * | 2000-02-10 | 2001-08-16 | Siemens Aktiengesellschaft | Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers |
EP1124092A3 (de) * | 2000-02-10 | 2002-09-11 | Framatome ANP GmbH | Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6655397B2 (en) * | 2001-03-27 | 2003-12-02 | Diamond Power International, Inc. | Articulating water monitor cleaning device |
DE102006005012A1 (de) * | 2006-02-03 | 2007-08-09 | Clyde Bergemann Gmbh | Vorrichtung mit Fluidverteiler und Messwerterfassung sowie Verfahren zum Betrieb eines mit Rauchgas durchströmten Kessels |
US20090211612A1 (en) * | 2008-01-08 | 2009-08-27 | Christos Athanassiu | Super-thin water jetting lance |
DE102013101656B4 (de) * | 2013-02-20 | 2015-04-16 | Areva Gmbh | Lanze zum Entfernen von am Rohrboden eines Dampferzeugers haftenden Ablagerungen |
US20150027499A1 (en) * | 2013-07-24 | 2015-01-29 | Babcock & Wilcox Nuclear Energy, Inc. | Multi-angle sludge lance |
US10024613B2 (en) | 2014-07-24 | 2018-07-17 | Stoneage, Inc. | Flexible tube cleaning lance positioner frame apparatus |
CA2955049C (en) | 2014-07-24 | 2022-04-19 | Stoneage, Inc. | Flexible tube cleaning lance positioner frame apparatus |
US9630801B2 (en) | 2014-07-24 | 2017-04-25 | Stoneage, Inc. | Flexible tube cleaning lance drive apparatus |
DE102015118615B3 (de) * | 2015-10-30 | 2016-09-01 | Areva Gmbh | Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers |
US10272480B2 (en) | 2016-12-09 | 2019-04-30 | Stoneage, Inc. | Apparatus for remotely propelling a flexible lance into and out of a piping system |
US11713932B2 (en) | 2020-08-18 | 2023-08-01 | Stoneage, Inc. | Flexible tube cleaning lance positioner frame apparatus |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1447051A (en) * | 1973-04-16 | 1976-08-25 | Atomic Energy Authority Uk | Tube-in-shell heat exchangers |
US4407236A (en) | 1981-09-21 | 1983-10-04 | Combustion Engineering, Inc. | Sludge lance for nuclear steam generator |
FR2514108B1 (fr) * | 1981-10-06 | 1986-06-13 | Framatome Sa | Procede et dispositif d'elimination des boues sur la plaque tubulaire des generateurs de vapeur |
JPS59500065A (ja) | 1982-01-25 | 1984-01-12 | シーメンス、アクチエンゲゼルシヤフト | 熱交換器を高圧で洗泥するための管隘路マニピュレ−タ、噴射ヘッドおよびその噴射方法 |
FR2544123B1 (fr) * | 1983-04-07 | 1988-02-12 | Thome Jean Patrick | Dispositif et procede d'intervention sur des tubes de generateurs de vapeur de chaudieres nucleaires |
US4638667A (en) * | 1984-01-20 | 1987-01-27 | Westinghouse Electric Corp. | Remote probe positioning apparatus |
US5036871A (en) * | 1989-02-22 | 1991-08-06 | Electric Power Research Institute, Inc. | Flexible lance and drive system |
US5065703A (en) * | 1987-03-18 | 1991-11-19 | Electric Power Research Institute, Inc. | Flexible lance for steam generator secondary side sludge removal |
US5286154A (en) * | 1987-03-18 | 1994-02-15 | Electric Power Research Institute, Inc. | In bundle foreign object search and retrieval apparatus |
US4827953A (en) | 1987-03-18 | 1989-05-09 | Electric Power Research Institute, Inc. | Flexible lance for steam generator secondary side sludge removable |
US4980120A (en) * | 1989-12-12 | 1990-12-25 | The Babcock & Wilcox Company | Articulated sludge lance |
US5116358A (en) * | 1990-07-23 | 1992-05-26 | United States Surgical Corporation | Combined surgical needle-suture device possessing a controlled suture separation feature |
US5194217A (en) * | 1992-01-10 | 1993-03-16 | The Babcock & Wilcox Company | Articulated sludge lance with a movable extension nozzle |
US5411043A (en) * | 1993-09-24 | 1995-05-02 | The Babcock & Wilcox Company | Articulated annular sludge lance |
-
1996
- 1996-03-13 EP EP96905723A patent/EP0815388B1/de not_active Expired - Lifetime
- 1996-03-13 ES ES96905723T patent/ES2141477T3/es not_active Expired - Lifetime
- 1996-03-13 WO PCT/DE1996/000449 patent/WO1996028690A1/de active IP Right Grant
- 1996-03-13 JP JP52717796A patent/JP3599745B2/ja not_active Expired - Lifetime
- 1996-03-13 DE DE59603677T patent/DE59603677D1/de not_active Expired - Lifetime
-
1997
- 1997-09-15 US US08/931,547 patent/US6192904B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9628690A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1124093A2 (de) * | 2000-02-10 | 2001-08-16 | Siemens Aktiengesellschaft | Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers |
EP1124092A3 (de) * | 2000-02-10 | 2002-09-11 | Framatome ANP GmbH | Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers |
EP1124093A3 (de) * | 2000-02-10 | 2003-02-19 | Framatome ANP GmbH | Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers |
Also Published As
Publication number | Publication date |
---|---|
WO1996028690A1 (de) | 1996-09-19 |
US6192904B1 (en) | 2001-02-27 |
EP0815388B1 (de) | 1999-11-17 |
DE59603677D1 (de) | 1999-12-23 |
ES2141477T3 (es) | 2000-03-16 |
JP3599745B2 (ja) | 2004-12-08 |
JPH11502294A (ja) | 1999-02-23 |
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