EP1214992A1 - Rohrperforationsvorrichtung - Google Patents
Rohrperforationsvorrichtung Download PDFInfo
- Publication number
- EP1214992A1 EP1214992A1 EP01126812A EP01126812A EP1214992A1 EP 1214992 A1 EP1214992 A1 EP 1214992A1 EP 01126812 A EP01126812 A EP 01126812A EP 01126812 A EP01126812 A EP 01126812A EP 1214992 A1 EP1214992 A1 EP 1214992A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- perforation
- pipe perforation
- base body
- perforation device
- pipeline
- 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
- 238000000034 method Methods 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 230000002950 deficient Effects 0.000 claims description 7
- 229910000760 Hardened steel Inorganic materials 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/0015—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes
- B26F1/0038—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor specially adapted for perforating tubes from the inside
Definitions
- the invention relates to a tube perforation device, in particular for defective heat exchanger tubes, for introduction into a pipeline and Puncturing the pipe wall.
- the Heat exchanger tubes pressed into a heat exchanger container have, it can due to corrosion damage or micro cracks Passage of medium from one circuit to the other.
- the heat exchanger tubes are usually on one or two tube plates in corresponding Receiving holes rolled and / or welded in a sealing manner. Access to the heat exchanger tubes is only from Pipe plate face possible inside the heat exchanger tubes. One access via the heat exchanger tank to the outside of the heat exchanger tubes is usually not possible or is made considerably more difficult, for example by closely spaced heat exchanger tubes.
- the heat exchanger tube is slotted to prevent a sudden, excessive pressure build-up within the one separated by the plugs Avoid pipe section.
- the slot is supposed to be one for one rapid pressure equalization have sufficient cross-sectional area on the pipe. However, it is avoided to completely cut through the tube on one side, unwanted movements of this separated pipe stub and to prevent damage within the heat exchanger tank.
- the object of the invention is therefore a device for partial cutting to indicate a pipeline from the inside, in which a defined Opening cross-section provided, an excessive deformation or even Avoid separation of the pipe and salvage of the device after Operation is facilitated.
- the tube perforation device in a tubular base body an axially displaceable actuating element and a cutting lever with perforation tip is at about the actuator caused relative movement between the cutting lever and a Angle of inclination swiveling out the cutting lever and thus radially outward point force to penetrate the pipe wall generated.
- it forms diametrically to the perforation tip opposite back of the base body to the abutment Application of pressure.
- the basic body becomes the one required for perforation of the line wall Force evenly distributed on the opposite side of the pipeline. There is no deformation of the tube, with which the perforation device is easy to remove after the perforation process.
- the perforation tip becomes a passage opening generated that has a predetermined cross section.
- An actuating cylinder is preferred for axially displacing the actuating element intended.
- a pressure cylinder When actuated by a pressure cylinder a corresponding pressure line from an outside of the plant Pressure generating device connected to the perforation device.
- the actuator When the actuator is reset to its normal position can also use a vacuum to assist in resetting the piston after the perforation process.
- the actuating cylinder is a double-acting hydraulic cylinder, whose piston is connected to the actuating element is a power-operated Resetting the piston and that connected to the piston Actuator possible. Accordingly, two pressure lines are on connected to the hydraulic cylinder.
- the actuating cylinder is located at the end of the device, the position of the device introduced for perforating outside the The pipeline remains, for example, the operating cylinder for the operator visible for control purposes. Furthermore, the cylinder can be without Limitations of its external dimensions are formed, with what the device also for small diameter pipes and / or relatively large wall thickness and the required perforation force can be used.
- the run-up slope Provide a fixed position at one end of the tubular base body and the pivotable cutting lever on the axially displaceable actuating element to hinge.
- the run-up slope on the actuating element is preferred arranged and the pivot axis of the cutting lever in Base body attached. This is an axial component of motion on the Perforation tip avoided when placing the device.
- the restoring means is preferably in the form of a form-fitting link guide formed on the ramp, whereby with power-operated reset of the actuating element of the cutting lever via the link guide is brought into its swiveled-in basic position.
- a double-acting actuating cylinder can be used after the perforation process reset the cutting lever to its normal position an actuating movement of the actuating element opposite to the perforation process can be achieved.
- the perforation tip pyramid-shaped with a triangular or polygonal base is. Tears on the sharp edges of the pyramid flanks of the perforation tip also tough pipe wall material.
- the perforation tip is made of hardened steel to reduce wear.
- the cylindrical base body has an outer diameter that is slightly smaller than the inner diameter of the perforated Pipeline, the counterforce to perforation is as even as possible distributed the pipe wall.
- Such a device also for pipes with a larger inner diameter to be able to use are for pipes with larger Inner diameter half-shell-shaped spacer elements as needed Enlargement of the outer diameter of the device is provided.
- a tube perforation device is shown in cross section.
- the device has a tubular base body 1, in which an axial Direction slidable actuator 2 is guided.
- Am in one too Perforating pipe to be inserted end 11 of the base body 1 is a Plug 12 screwed into the tubular base body 1.
- the tubular base body 1 Inside the tubular base body 1 is close to the plug 12 around an axis 31 pivotable cutting lever 3 articulated.
- the axis 31 is in the tubular base body 1 held.
- the cutting lever 3 has a swivel arm 32, on the one of which A perforation tip 33 is formed on the axis 31 downward end.
- the End 34 of the cutting lever 3 near the axis 31 is hemispherical. When the plug 12 is fully screwed in, this is supported hemispherical end 34 of the cutting lever 3 on an associated concave support surface 13 of the plug 12.
- the actuating element 2 has on its facing towards the cutting lever 3 End of a run-up slope 21 on which a slightly rounded sliding surface 35 of the cutting lever 3 substantially below the perforation tip 33 is sliding.
- the ramp 21 has an inclination of approximately 15 ° Axial line.
- an actuating cylinder 4 attached to the tubular base body 1.
- a piston 41 is received, which is connected to the actuating element 2 is connected.
- the actuating cylinder 4 has two pressure line connections 42, 43 on in order to pressurize the To enable piston 41.
- Fig. 1 the tube perforation device is in its basic position with the pivoted Cutting lever 3 shown.
- the piston 41 is located here with the actuating element 2 in a position oriented on the right in FIG. 1.
- tubular base body 1 To pass the perforation tip 33 to the inner tube wall of the perforating pipeline is in the tubular base body 1 appropriately shaped cutout or slot 15 provided.
- the cutting lever 3 has near the perforation tip 33 on both sides Swivel arm 32 attached or molded sliding blocks 36 on.
- the Slide blocks 36 are guided in guide grooves 22 on the actuating element 2 near the ramp slope 21 in corresponding lateral Flanks 23 are formed.
- the flank 23 with the guide 22 is shown in FIG. 1, as lying behind the cutting lever 3, shown in dashed lines.
- the tube perforation device is in a heat exchanger tube 52 introduced in perforation position.
- Fig. 2 is also a tube plate 51 of the heat exchanger 5 reproduced, in which the heat exchanger tube 52 is rolled. With the cutting lever 3 swung out there is already a perforation 53 in the wall of the heat exchanger tube 52 brought in.
- the pipe perforation device is provided with its plug 12 End 11 of the tubular base body 1 in a defective heat exchanger tube 52 of a heat exchanger 5 from the accessible side of the tube plate 51 introduced.
- the perforations in the defective heat exchanger tube 52 must be executed far enough inside the tube, so that after inserting sealing plugs at the end of the pipe still an undisturbed Pressure equalization between the heat exchanger room and the interior of the Heat exchanger tube is possible.
- the length of the tubular is corresponding Base body or the position of the perforation tip 33 on the Training device.
- the slightly curved sliding surface 35 of the cutting lever 3 slides on the Run-up slope 21 along so that the cutting lever 3 with its swivel arm 32 is pivoted about the pivot axis 31 and by the slot-like cutout 15 against the inside of the heat exchanger tube 52 creates.
- the perforation device can now be used to further introduce perforation openings be twisted in the tube. After completing the desired one The device can be perforated after being reset Basic position can be pulled out of the heat exchanger tube 52.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Pipe Accessories (AREA)
- Drilling And Boring (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Structure Of Belt Conveyors (AREA)
- Automatic Assembly (AREA)
Abstract
Description
- Fig. 1
- eine Perforationsvorrichtung im Querschnitt und
- Fig. 2
- die in Fig. 1 dargestellte Perforationsvorrichtung, eingeführt in einer Rohrleitung, beim Perforationsvorgang.
- 1
- rohrförmiger Grundkörper
- 11
- innenwärtiges Ende
- 12
- Stopfen
- 13
- konkave Stützfläche
- 14
- außenwärtiges Ende
- 15
- Ausschnitt, Langloch
- 2
- Betätigungselement
- 21
- Auflaufschräge
- 22
- Führungsnut, Kulissenführung
- 23
- Flanke
- 3
- Schneidhebel
- 31
- Achse
- 32
- Schwenkarm
- 33
- Perforationsspitze
- 34
- halbkugelförmiges Ende
- 35
- Gleitfläche
- 36
- Kulissenstein
- 4
- Betätigungszylinder
- 41
- Kolben
- 42
- Druckleitungsanschluß
- 43
- Druckleitungsanschluß
- 5
- Wärmetauscher
- 51
- Rohrplatte
- 52
- Wärmetauscherrohr
- 53
- Perforation
Claims (12)
- Rohrperforationsvorrichtung, insbesondere für defekte Wärmetauscherrohre, zur Einführung in eine Rohrleitung (52), mit einem rohrförmigen Grundkörper (1), der in die Rohrleitung (52) einführbar ist und in dem ein Betätigungselement (2) in axialer Richtung verschiebbar und ein Schneidhebel (3) mit Perforationsspitze (33) in im wesentlichen radialer Richtung schwenkbar gelagert sind, wobei der Schneidhebel (3) über eine Auflaufschräge (21) bei Relativbewegung zwischen diesen in radialer Richtung ausgeschwenkt wird und die Perforationsspitze (33) die Wandung der Rohrleitung (52) durchstößt.
- Rohrperforationsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zum axialen Verschieben des Betätigungselementes (2) ein Betätigungszylinder (4) vorgesehen ist.
- Rohrperforationsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Betätigungszylinder (4) ein doppelt wirkender Hydraulikzylinder ist, dessen Kolben (41) mit dem Betätigungselement (2) verbunden ist.
- Rohrperforationsvorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Betätigungszylinder (4) an dem Ende (14) des Grundkörpers (1) angeordnet ist, das bei zum Perforieren eingeführter Stellung der Vorrichtung außerhalb der Rohrleitung (52) bleibt.
- Rohrperforationsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Auflauffschräge (21) am Betätigungselement (2) angeordnet und die Schwenkachse (31) des Schneidhebels (3) im Grundkörper (1) gehaltert ist.
- Rohrperforationsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß ein Rückstellmittel (22, 36) zum Zurückschwenken des Schneidhebels (3) nach dem Rohrperforationsvorgang in seine Grundstellung vorgesehen ist.
- Rohrperforationsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das Rückstellmittel in Form einer formschlüssigen Kulissenführung (22) an der Auflaufschräge (21) ausgebildet ist, wobei bei kraftbetätigter Rückstellung des Betätigungselementes (2) der Schneidhebel (3) über die Kulissenführung (22) in seine eingeschwenkte Grundstellung gebracht wird.
- Rohrperforationsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Perforationsspitze (33) pyramidenförmig mit drei- oder mehreckiger Grundfläche ausgebildet ist.
- Rohrperforationsvorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Perforationsspitze (33) aus gehärtetem Stahl besteht.
- Rohrperforationsvorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der zylindrische Grundkörper (1) einen Außendurchmesser aufweist, der geringfügig kleiner ist als der Innendurchmesser der zu perforierenden Rohrleitung (52).
- Rohrperforationsvorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß für Rohrleitungen mit größerem Innendurchmesser halbschalenförmige Distanzelemente zur bedarfsweisen Vergrößerung des Außendurchmessers der Vorrichtung vorgesehen sind.
- Rohrperforationsvorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß formschlüssige Rastelemente an Distanzelement und Grundkörper (1) zur Fixierung der Distanzelemente am Grundkörper (1) bei Rotations- und Axialbewegungen in der Rohrleitung vorgesehen sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10061835A DE10061835C1 (de) | 2000-12-12 | 2000-12-12 | Rohrperforationsvorrichtung |
| DE10061835 | 2000-12-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1214992A1 true EP1214992A1 (de) | 2002-06-19 |
| EP1214992B1 EP1214992B1 (de) | 2003-05-02 |
Family
ID=7666807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01126812A Expired - Lifetime EP1214992B1 (de) | 2000-12-12 | 2001-11-10 | Rohrperforationsvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1214992B1 (de) |
| AT (1) | ATE238857T1 (de) |
| DE (2) | DE10061835C1 (de) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1588200A (en) * | 1925-03-12 | 1926-06-08 | Randomtex Dyeing Machine Corp | Perforating device for cones |
| US2315437A (en) * | 1941-11-27 | 1943-03-30 | John C Luccous | Perforator for well pipes |
| US4227393A (en) * | 1979-01-03 | 1980-10-14 | Anvil Corporation | Method and apparatus for punching openings in tubes |
| US4730392A (en) * | 1984-07-31 | 1988-03-15 | Chevron Research Company | Hydraulic punch tool for heat exchangers |
| US4936013A (en) * | 1989-06-05 | 1990-06-26 | Chevron Research Company | Mechanical heat exchanger punch tool and method |
-
2000
- 2000-12-12 DE DE10061835A patent/DE10061835C1/de not_active Expired - Fee Related
-
2001
- 2001-11-10 EP EP01126812A patent/EP1214992B1/de not_active Expired - Lifetime
- 2001-11-10 AT AT01126812T patent/ATE238857T1/de not_active IP Right Cessation
- 2001-11-10 DE DE50100211T patent/DE50100211D1/de not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1588200A (en) * | 1925-03-12 | 1926-06-08 | Randomtex Dyeing Machine Corp | Perforating device for cones |
| US2315437A (en) * | 1941-11-27 | 1943-03-30 | John C Luccous | Perforator for well pipes |
| US4227393A (en) * | 1979-01-03 | 1980-10-14 | Anvil Corporation | Method and apparatus for punching openings in tubes |
| US4730392A (en) * | 1984-07-31 | 1988-03-15 | Chevron Research Company | Hydraulic punch tool for heat exchangers |
| US4936013A (en) * | 1989-06-05 | 1990-06-26 | Chevron Research Company | Mechanical heat exchanger punch tool and method |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE238857T1 (de) | 2003-05-15 |
| EP1214992B1 (de) | 2003-05-02 |
| DE10061835C1 (de) | 2001-12-13 |
| DE50100211D1 (de) | 2003-06-05 |
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