JP2014114663A - Pipe body cutting preprocessor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an epoch-making pipe body cutting preprocessor excellent in practicality, capable of reducing the effort of an operator in drilling work and deposit removal work as a preliminary treatment when performing pipe body cutting and allowing these operations to be performed efficiently and at low cost.SOLUTION: A pipe body cutting preprocessor is equipped with: a drilling device 3 for drilling a discharge hole 2 for discharging a combustible gas in a pipe body 1 before cutting the pipe body 1; and a deposit removal device 6 for removing deposit 4 adhering to a cutting position surface of the pipe body 1 to form a deposit removal part 5 for cutting. On an annular guide part 7 detachably attached to a periphery of the pipe body 1 so as to surround the pipe body 1, a circularly moving part 8 moving circularly along the annular guide part 7 is provided. The drilling device 3 and the deposit removal device 6 are provided on the circularly moving part 8, and at least the drilling device 3 is freely operable for drilling by remote control operation.

Description

  For example, when removing a pipe body such as a steel pipe embedded in the seabed ground, the present invention provides a discharge hole for discharging a combustible gas inside the pipe body before cutting the pipe underwater oxygen arc. And a tube cutting pretreatment apparatus for removing attached matter such as marine organisms attached to the surface of the cutting position of the tube.

  For example, when removing a tubular body such as a steel pipe that has been embedded in the seabed ground, before cutting this tubular body with an oxygen arc underwater, as a pre-cutting treatment, combustible gas accumulated in the tubular body is exposed to the outside of the tubular body. The deposit removal work is carried out to remove deposits such as marine organisms adhering to the surface of the tubular body which hinders the discharge of combustible gas to be discharged and the cutting operation.

  In this flammable gas discharge work, a piercing work for piercing a discharge hole for discharging the flammable gas into the pipe body using a punching machine is performed, and in the deposit removal work, a removal device such as a scraper (removal) The work that cleans the cutting position by scraping off the adhering material adhering to the surface of the tubular body along the circumferential direction of the tubular body is performed using these tools. Was submerged in the sea and carried out manually using a hand-held drilling machine and removal device.

  However, this work in the sea is a troublesome work that requires a lot of labor because it is difficult for the worker to take a reaction force because the worker must work while floating in the sea. In the case of installing a scaffold for fixing the body in order to obtain a reaction force, the installation of this scaffold has been costly.

  In view of the present situation as described above, the present invention reduces the labor of an operator and performs these operations efficiently and at low cost in the drilling operation and the deposit removal operation, which are pretreatments at the time of cutting the tube. It is an object of the present invention to provide an innovative tube cutting pretreatment apparatus that is excellent in practicality.

  The gist of the present invention will be described with reference to the accompanying drawings.

  Before cutting the tube body 1, the perforation device 3 for drilling the discharge hole 2 for discharging the flammable gas in the tube body 1 and the deposit 4 attached to the cutting position surface of the tube body 1 are removed. An apparatus for pre-cutting a tube body provided with a deposit removing device 6 for forming a cutting deposit removing section 5, which is detachably attached around the tube body 1 so as to surround the tube body 1. The part 7 is provided with a revolving movement part 8 that revolves around the annular guide part 7, the revolving movement part 8 is provided with the perforating device 3 and the deposit removing device 6, and at least the perforating apparatus 3 is remotely connected. The present invention relates to a pretreatment device for cutting a tubular body, which is provided so as to be pierced by operation.

  Further, the deposit removing device 6 is positioned on one side or the other side in the length direction of the tubular body 1 with respect to the discharge hole 2 drilled by the punching device 3, and the deposit removing device 6 is connected to the annular guide. It is configured such that the adhering material 4 adhering to the surface of the tubular body 1 is removed by revolving around the part 7 via the orbiting moving unit 8 to form the cutting adhering material removing unit 5. The tube cutting pretreatment apparatus according to claim 1, characterized in that:

  Further, the deposit removing device 6 is provided in a state of being arranged side by side in the circumferential movement direction of the perforating device 3, and the deposit removing device 6 is provided so as to be movable in the length direction of the tubular body 1, and the deposit The removal device 6 removes the deposits 4 adhering to the surface of the tubular body 1 to form a perforated surface deposit removal portion 9, and the perforation device 3 removes the perforated surface deposit removal portion 9 by the punching device 3. While piercing the hole 2, the deposit removing device 6 is moved in the length direction of the tube body 1 so as to be positioned on one side or the other side in the length direction of the tube body 1 from the discharge hole 2. 2. The structure according to claim 1, wherein the cutting deposit removing portion 5 is formed by removing at least half of the deposit 4 adhering to the surface of the tubular body 1 by moving the cut portion. This relates to the tube cutting pretreatment device according to any one of the above.

  Further, the orbiting moving portion 8 presses the driving roller 10 against the annular guide portion 7 by the urging force of the urging mechanism 11 or the pressing force of the pressing mechanism, and the annular guide portion 7 is controlled by driving of the driving roller 10. When the overload is about to occur in the removal tool portion 12 of the deposit removing device 6, the biasing force or the pressing force is generated. The drive roller 10 is repelled against this and the drive roller 10 slips, so that the orbiting movement of the orbiting moving unit 8 is stopped or decelerated. The tube cutting pretreatment apparatus according to any one of the above items.

  The deposit removing device 6 removes the vibration scraper tool 12 that presses against the surface of the tubular body 1 at a predetermined angle and peels and removes the deposit 4 adhered to the surface of the tubular body 1 by striking vibration. It employ | adopted as the tool part 12, It concerns on the pipe body cutting pre-processing apparatus of any one of Claims 1-4 characterized by the above-mentioned.

  In addition, the perforating device 3 and the deposit removing device 6 are provided in the orbiting moving portion 8, and the cutting deposit removing portion 5 formed on the tubular body 1 by the deposit removing device 6 is used as a cutting position. 6. The tube cutting pretreatment device according to claim 1, further comprising a cutting device for cutting.

  Moreover, the said pipe body 1 is the underwater metal pipe support | pillar 1 by which the lower end was embed | buried under the seabed ground, and cutting | disconnection of this cutting device as pre-processing at the time of cut | disconnecting this underwater metal pipe support | pillar 1 with a cutting device with high heat The perforating apparatus 3 is configured to perforate the exhaust hole 2 for exhausting the combustible gas in the submarine metal pipe column 1 above the position, and the tubular body below the exhaust hole 2 1. The deposit removing device 6 is configured to remove marine organisms as deposits 4 attached to a surface to form the cutting deposit removing unit 5. 6. The tube cutting pretreatment apparatus according to any one of items 6 to 6.

  Since the present invention is configured as described above, it is possible to reduce the labor of the operator and perform these operations efficiently and at low cost in the drilling operation and the deposit removal operation, which are pretreatments at the time of cutting the tube. It is an epoch-making tube cutting pretreatment device with excellent practicality.

  Further, in the inventions according to claims 2 and 3, surface deposits that hinder the cutting of the tube body can be removed very easily, and a cutting deposit removing portion that becomes a cutting position can be easily formed. In particular, in the invention according to claim 3, when the discharge hole is drilled, the deposit is removed by the deposit removing device even when the deposit is attached to the drilling position on the surface of the tube and it is difficult to drill the discharge hole. It is possible to efficiently perform the deposit removing operation for removing the deposit attached to the hole drilling position and the drilling operation for drilling the discharge hole in the surface deposit removing portion for drilling from which the deposit is removed. It becomes an innovative tube cutting pretreatment device with extremely excellent workability.

  Further, in the invention described in claim 4, even when the deposit removing device is caught by the deposit and becomes unable to move around, it is possible to easily realize a configuration in which the deposit removing device is not damaged with a very simple configuration. It becomes an innovative tube cutting pretreatment device.

  In the invention according to claim 5, the tubular body cutting pretreatment apparatus is excellent in workability and can remove deposits adhered to the surface of the tubular body more efficiently.

  Further, in the invention described in claim 6, all the operations of the drilling operation and the deposit removal operation and the tube cutting operation, which are pretreatments at the time of cutting the tube, are performed by the tube cutting pretreatment apparatus of the present invention. Therefore, it is an epoch-making tube cutting pretreatment device that can perform the tube cutting operation more efficiently.

  Further, in the invention described in claim 7, in the practicality capable of efficiently and extremely safely cutting the underwater metal pipe column embedded in the seabed ground where there is a combustible gas and there is a risk of explosion. It is an excellent and innovative tube cutting pretreatment device.

It is a perspective view which shows a present Example. It is a top view which shows a present Example. It is a description top view which shows a present Example. It is explanatory front view which shows the state with which the present Example was mounted | worn with the underwater metal pipe support | pillar. It is explanatory side sectional drawing which shows the latching claw part of a present Example. It is explanatory top view which shows the principal part of a present Example. It is explanatory top view which shows the principal part of a present Example. It is explanatory side sectional drawing which shows the principal part of a present Example. It is explanatory side sectional drawing which shows the principal part of a present Example. It is explanatory side sectional drawing which shows the principal part of a present Example. It is explanatory side sectional drawing which shows the principal part of a present Example. It is explanatory side sectional drawing which shows the principal part of a present Example. It is explanatory side view which shows the principal part of a present Example. It is explanatory drawing which shows the moving mechanism of the punching apparatus of this Example, and a deposit removal apparatus. It is explanatory description which shows the use condition of a present Example. It is a description perspective view which shows the submarine metal pipe support | pillar of the state which performed the pipe body cutting | disconnection pretreatment using a present Example. It is explanatory sectional drawing which shows the underwater metal pipe support | pillar of the state which performed the pipe body cutting | disconnection pretreatment using a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  An annular guide portion 7 is attached around the tube body 1 so as to surround the tube body 1, and the present invention is attached to the tube body 1.

  As a result, the punching device 3 and the deposit removing device 6 are attached to the tube body 1 via the annular guide portion 7, and the work can be performed without the hand of the operator as in the prior art. By this, the worker is not forced to perform a very troublesome work of obtaining work reaction force in the sea, and it is also unnecessary for the worker to install a scaffolding at a cost to obtain the work reaction force. In the drilling work and deposit removal work, which are pretreatments when cutting the tubular body 1, the burden on the workers of these work is reduced, and it is an epoch-making breakthrough excellent in practicality that can be performed efficiently and at low cost. Tube pre-cutting device.

  In addition, the present invention has a configuration in which the deposit removing device 6 is provided so as to be capable of circular movement along the surface of the tubular body 1 by the circumferential movement portion 8 provided in the annular guide portion 7 so as to be capable of circular movement. When the deposit 4 attached to the cutting position surface is removed to form the cutting deposit removing section 5, the deposit 4 attached to the surface of the tube 1 is very easily and efficiently formed. It is possible to form a cutting deposit removing portion 5 that is removed along the circumferential direction of the tube 1 to be a cutting position of the tube body 1, and cuts the deposit 4 such as marine organisms attached to the surface of the tube body 1. There is no hindrance, the cutting position is clarified, and it becomes an epoch-making tube cutting pretreatment apparatus excellent in practicality that can efficiently perform the cutting operation.

  In addition, for example, when cutting the tubular body 1 such as a steel pipe embedded in the seabed ground, there is a possibility that flammable gas such as natural gas leaked from the seabed ground is accumulated inside, and this flammability. When the tube 1 in a state where gas is accumulated is drilled by the drilling device 3, the spark generated at the time of drilling may ignite the combustible gas and explode. However, in this respect, the drilling device 3 is operated remotely. Therefore, when drilling work, the operator does not have to be at the drilling site, and a safe place away from the drilling site, for example, on the work ship 13 anchored at sea. Thus, it becomes an epoch-making tube cutting pretreatment apparatus that can perform the drilling work in a safe environment by remotely operating the drilling apparatus 3.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, before the tube body 1 is cut, a perforation device 3 for perforating a discharge hole 2 for discharging the combustible gas in the tube body 1 and the attachment position attached to the surface of the tube body 1 at the cutting position. A tube body cutting pretreatment device including an attachment removing device 6 that removes the kimono 4 and forms an attachment removing portion 5 for cutting, and is attached to and detached from the tube body 1 so as to surround the tube body 1. An annular guide portion 7 that is freely attached is provided with a circumferential movement portion 8 that moves around the annular guide portion 7, and the perforation device 3 and the deposit removal device 6 are provided at the circumferential movement portion 8, at least The punching device 3 is provided so as to be drillable by remote control.

  Specifically, in this embodiment, when removing the underwater metal pipe strut 1 that is embedded in the seabed ground that is the foundation of the pier, before the underwater oxygen arc cutting of the underwater metal pipe strut 1, Then, a drilling operation for drilling a discharge hole 2 for discharging the flammable gas existing in the underwater metal pipe strut 1 in the peripheral surface of the underwater metal pipe strut 1 and the cutting position surface of the undersea metal tube strut 1 are attached. It is configured so that two different operations can be performed by one unit, such as the deposit removing operation for removing the deposit 4 such as marine organisms that hinders the cutting operation.

  More specifically, in this embodiment, as shown in FIGS. 1 and 2, the base portion 15 having the float portion 14 and the base portion 15 provided in the base portion 15 are fixed to the underwater metal pipe column 1. An annular guide portion 7 for mounting on the annular guide portion 7, an orbiting movement portion 8 that is provided around the annular guide portion 7 so as to be capable of orbiting and moving around the underwater metal pipe column 1, and an underwater metal provided on the orbiting movement portion 8. A drilling device 3 for drilling the discharge hole 2 in the tube strut 1 and an attachment 4 for removing marine organisms and the like attached to the surface of the tube body 1 provided in the orbiting moving portion 8 as in the drilling device 3 It is comprised with the kimono removal apparatus 6. FIG.

  More specifically, the base portion 15 has a structure in which a pair of float portions 14 are connected by a connecting rod 16 and a mounting leg portion 17 is attached to the float portion 14.

  In addition, the base portion 15 is configured so that the buoyancy can be adjusted by the float portion 14. Specifically, an air introduction portion 14a for introducing air into the float portion 14 from the outside into the float portion 14, and the float portion. The air lead-out part 14b which leads the air in 14 to the outside is provided, and the amount of air in the float part 14 is adjusted by taking in and out the air in the float part 14 through the air introduction part 14a and the air lead-out part 14b. The float portion 14 is configured to be adjustable in buoyancy, and the buoyancy adjustment in which the base body portion 15 of the present embodiment can be easily submerged in the sea or floated on the sea by adjusting the buoyancy of the float portion 14. It is said.

  That is, in this embodiment, when submerging in water to perform the tube cutting pretreatment, the air in the float unit 14 is discharged from the air outlet 14b to reduce the buoyancy of the float unit 14 and easily settle. When the pipe body pretreatment is finished and pulled up to the sea, air is introduced into the float part 14 from the air introduction part 14a to increase the buoyancy of the float part 14 so that it can easily float from the water. It is configured to be able to.

  2 and 3, the annular guide portion 7 is fixed to a pair of semicircular guide portions 7a and 7b having a plurality of locking claws 18; A fixed semicircular guide portion 7a to be provided, and a movable semicircular guide portion 7b provided at one end pivotally attached to the fixed semicircular guide portion 7a and provided to the fixed semicircular guide portion 7a so as to be freely opened and closed. doing. Reference numeral 19 denotes an opening operation locking mechanism that disables the opening operation of the annular guide portion 7.

  More specifically, as shown in FIG. 4, the fixed semicircular guide portion 7a and the movable semicircular guide portion 7b are arranged in parallel with a pair of semicircular tube bodies 20 spaced apart from each other in the vertical direction. The semicircular tube bodies 20 arranged side by side in the vertical direction are connected to each other by a plurality of connecting ribs 21 arranged between them, and the connecting ribs 21 are subsea metal pipes. In this embodiment, two locking claws 18 are provided in parallel with one connecting rib 21 in the up-down direction. It has a configuration.

  Further, the locking claw portion 18 is formed with a sharp tip at the tip, and is provided on the connecting rib 21 so as to protrude inward of the annular guide portion 7. When attached to the marine organism 4 attached to the surface of the underwater metal pipe column 1, the sharp tip portion is configured to be locked.

  More specifically, as shown in FIG. 5, the locking claw portion 18 is provided with an extended elastic body 22 (in this embodiment, a coil spring is used), and the annular guide portion 7 is connected to the underwater metal. When attached to the tube strut 1, the locking claw portion 18 in contact with the underwater metal tube strut 1 moves backward against the spring force of the elastic body 22, and the elastic body 22 is moved back by the retraction of the locking claw portion 18. When the elastic body 22 is degenerated and the elastic body 22 is degenerated, the elastic body 22 is extended and biased, and the elastic body 22 presses the locking claw portion 18 toward the distal end, thereby The locking claw portion 18 is pressed and locked to the underwater metal tube strut 1, and the attached material 4 such as marine organisms attached to the surface of the underwater metal tube strut 1 and the surface of the underwater metal tube strut 1. It is configured so as to be locked in place.

  Thus, the annular guide portion 7 of this embodiment has all the locking claws 18 appropriate for the underwater metal tube strut 1 with deposits 4 such as marine organisms attached and the surface being uneven. This embodiment is configured so that the underwater metal tube strut 1 can be fixedly attached to the underwater metal tube strut 1 by being pushed into the underwater metal tube strut 1 with a pressing force.

  Further, as shown in FIGS. 6 and 7, the orbiting moving unit 8 is provided with a work tool mounting portion 23 in which the punching device 3 and the deposit removing device 6 are disposed, and a drive unit 24 provided on the work tool mounting portion 23. And a traveling unit 25 having a driving roller 10 driven by the motor, and a plurality of the traveling unit 8 for preventing the separation of the circular moving unit 8 from the annular guide unit 7 and causing the circular moving unit 8 to stably travel along the annular guide unit 7. A driven roller 26 is used.

  Specifically, as shown in FIGS. 8 to 12, the work device attachment portion 23 is horizontally arranged at a predetermined interval (interval substantially equal to the interval between the semicircular tubular bodies 20 of the annular guide portion 7). The upper plate portion 23a and the lower plate portion 23b arranged side by side are connected by a vertical connecting member 23c, and the fixed side semicircular guide portion 7a and the movable side of the annular guide portion 7 are connected to the upper plate portion 23a. An upper driven roller 26a that moves while contacting an upper annular guide portion 7c formed by the semicircular tubular body 20 on the upper side of each semicircular guide portion 7b is provided, and the annular guide portion 7 is provided on the lower plate portion 23b. A lower driven roller 26b that moves while abutting on a lower annular guide portion 7d formed by a semicircular tubular body 20 on the lower side of each of the fixed-side semicircular guide portion 7a and the movable-side semicircular guide portion 7b. The upper guide roller 26a and the lower follower roller 26b sandwich the annular guide portion 7 from above and below. Therefore, the orbiting moving portion 8 is configured not to be moved (swinged) in the vertical direction due to vibration during operation or the like so as to be detached from the annular guide portion 7.

  Further, as shown in FIG. 13, the traveling unit 25 is arranged in a horizontal state at a facing position with the driving roller 10 disposed in a horizontal state driven by the driving unit 24 and the driving roller 10 and the upper annular guide portion 7c interposed therebetween. A horizontal driven roller 26c provided, and a biasing mechanism 11 for applying a biasing force for relatively approaching the horizontal driven roller 26c to the driving roller 10 (in this embodiment, a spring-like elastic body 11 such as a coil spring is provided. And the driving roller with respect to the annular guide portion 7 (upper annular guide portion 7c) disposed between the driving roller 10 and the horizontal driven roller 26c by the approach bias generated by the spring-like elastic body 11. 10 and the horizontal driven roller 26c are pressed from the horizontal direction to sandwich the upper annular guide portion 7c, and the orbiting moving portion 8 is moved (oscillated) in the horizontal direction (front-rear direction) due to vibration during operation. Do not leave the annular guide 7 It is configured as follows.

  That is, the orbiting moving portion 8 of the present embodiment includes the upper driven roller 26a and the lower driven roller 26b provided in the work device mounting portion 23 to sandwich the annular guide portion 7 in the vertical direction, and the driving roller 10 provided in the traveling portion 25. Further, the annular guide portion 7 (upper annular guide portion 7c) is sandwiched from the horizontal direction by the horizontal driven roller 26c so that the orbiting moving portion 8 does not separate from the annular guide portion 7, and the orbiting moving portion 8 becomes the annular guide portion. 7 is configured to stably move around the self-running lap.

  The urging mechanism 11 is not limited to the spring-like elastic body 11 and may be appropriately employed as long as it can exert the effects of the present embodiment.

  Further, the orbiting moving unit 8 of the present embodiment is configured such that the drive roller 10 is pressed against the annular guide portion 7 by the spring-like elastic body 11, so that an overload is applied to the removing tool portion 12 of the deposit removing device 6. When it is going to occur, the drive roller 10 escapes against the urging force or pressing force, and the drive roller 10 slips, so that the circular movement of the circular moving unit 8 is stopped or decelerated. doing.

  That is, for example, the deposit removing device 6 provided in the orbiting moving section 8 is caught by the deposit 4 of the underwater metal pipe column 1 during the orbiting movement, and the adhering substance removal is performed by the force of the orbiting moving section 8 trying to move around. When a large overload is generated in the removal tool portion 12 of the apparatus 6 so that the removal tool portion 12 is likely to be damaged, the movement is restrained so that the drive roller 10 moves in the circumferential movement direction. Force acting outwardly, the outwardly acting force causes the spring-like elastic body 11 to contract, and the spring-like elastic body 11 contracts to cause the annular guide portion 7 of the driving roller 10 and the horizontal driven roller 26c. The pressure contact force with respect to the (upper annular guide portion 7c) is weakened, and since the pressure contact force is weakened, the drive roller 10 slips and the force that the orbiting moving unit 8 tries to move in the orbiting movement direction is reduced. Circulation movement of part 8 stops Alternatively, by decelerating, the removal tool portion 12 of the deposit removal device 6 caught on the deposit 4 is configured not to have a large overload that would damage the removal tool portion 12.

  It should be noted that the orbital moving unit 8 of the present embodiment is configured to be remotely operable, and configured to be able to be operated by remote operation from a place away from the work site, for example, on the work ship 13 anchored at sea. Yes.

  Further, the drilling device 3 and the deposit removing device 6 are those commonly used. In this embodiment, as shown in FIGS. 6 and 7, the drilling device 3 uses a general drill tool. In addition, the deposit removing device 6 is configured to use a vibration scraper tool 12 (air-driven striking ground adjusting tool) as the removing tool portion 12, and these are left and right to the working device mounting portion 23 of the orbiting moving portion 8 described above. They are arranged side by side in a direction, and each of them can be moved forward and backward by a moving mechanism, and can be operated by remote control.

  In the present embodiment, the deposit removing device 6 is provided in parallel with the drilling device 3 on the front side in the circumferential movement direction. Specifically, the deposit removing device 6 located in the front includes the punching device. The surface deposit removing part 9 for drilling is formed by removing the deposits 4 such as marine organisms adhering to the surface of the underwater metal tube strut 1 at the position where 3 is drilled, and this surface deposit removing part 9 for drilling is formed. When the deposit removing device 6 stops working after the formation of the deposit 9, the punching device 3 is positioned on the surface deposit removing portion 9 for drilling formed by the deposit removing device 6.

  Further, as shown in FIGS. 8 to 11 and 14, the moving mechanism for moving the punching device 3 and the deposit removing device 6 back and forth is provided so as to be slidable on the slide guide portion 27 and the slide guide portion 27. The piercing device 3 and the deposit removing device 6 of this embodiment are slidably provided on the work device mounting portion 23 of the orbiting moving portion 8 by sliding movement of the mounting table 28. It is said.

  Specifically, as shown in FIG. 14, a mounting drive gear 29 for moving the mounting base 28 is disposed between two mounting bases 28 arranged side by side, and this mounting base driving gear is provided. The gear 29 (pinion) and the linear gear 30 (rack) provided on each mounting base 28 are engaged, and the mounting base 28 is slid back and forth along the slide guide portion 27 by the rotation of the mounting base driving gear 29. In this embodiment, as described above, both the mounting bases 28 are moved by one mounting base driving gear 29 provided between the two mounting bases 28 as described above. When the table driving gear 29 is rotated in one direction, one mounting table 28 moves forward, and the other mounting table 28 moves backward.

  That is, in the tube body cutting pretreatment, both the drilling operation using the punching device 3 and the deposit removing operation using the deposit removing device 6 are not performed at the same time. When it moves forward, the deposit removing device 6 moves backward to enter a standby state, and when the deposit removing device 6 is moved forward to perform the deposit removing operation, the punching device 3 located in the front moves backward. Thus, it is configured so as to be in a standby state and not hinder each work.

  Further, the deposit removing device 6 is provided so as to be rotatable with respect to the mounting base 28 so that the angle of entry (contact angle) of the tip of the removal tool portion 12 to the surface of the underwater metal pipe column 1 can be adjusted. In addition, it is configured to be movable in the vertical direction and to be adjustable in height position.

  Specifically, as shown in FIG. 12, a support portion 31 that supports the deposit removing device 6 is erected on the mounting base 28, and a slide guide hole 32 is provided in the support portion 31, so that the deposit removing device 6. Is configured to be slidable along the slide guide hole 32.

  Further, since the drilling device 3 and the deposit removing device 6 are configured to be remotely operable, the drilling operation and the deposit removing operation for the tube cutting pretreatment using this embodiment are performed at sea as shown in FIG. It is carried out from the work boat 13 moored at. At this time, an underwater camera 33 that reflects the work status and an underwater light 34 that illuminates the work location are provided in the orbiting movement unit 8 so that the work status can be checked while checking the work status.

  In addition, the codes | symbols 35 and 36 in FIG. 15 are the hydraulic pump and air compressor for operating the punching apparatus 3 and the deposit | attachment removal apparatus 6. FIG.

  In the present embodiment, two types of work devices (work tools) including the drilling device 3 and the deposit removing device 6 are provided. However, in addition to the configuration of the present embodiment, the underwater metal pipe column 1 is provided. It is good also as a structure which provided the cutting device which cut | disconnects.

  In the case of providing this cutting device, it is preferable that the deposit removing device 6 is provided on the front side of the orbiting movement portion 8 and the cutting device is provided on the rear side. In this way, the submerged metal pipe strut 1 can be removed while proceeding with the fouling removal work for removing the adhering substances 4 such as marine organisms adhering to the surface of the submarine metal pipe strut 1 with the deposit removing device 6. A cutting operation for cutting can be performed.

  The operation and effect of the present embodiment configured as described above will be described below.

  When performing the tube cutting pretreatment of the underwater metal pipe support column 1 using the present embodiment, first, the present embodiment placed on the sea is set to a predetermined working position by adjusting the buoyancy of the float portion 14 and working. The annular guide portion 7 is operated to open at the position, and is attached to the underwater metal pipe column 1 so as to surround the underwater metal tube column 1, and this embodiment is attached to the underwater metal tube column 1.

  At this time, the plurality of locking claws 18 provided on the annular guide portion 7 are difficult to lock in the deposits 4 such as marine organisms attached to the surface of the underwater metal pipe column 1 and the surface of the underwater metal tube column 1. In addition, this embodiment can be firmly fixed to the underwater metal pipe column 1.

  After mounting this embodiment on the underwater metal pipe column 1, the operator returns to the offshore work boat 13 and remotely operates the orbiting moving unit 8, the drilling device 3 and the deposit removing device 6 to perform the tube cutting pretreatment. Do some drilling and deposit removal.

  Specifically, first, in order to remove the adhering material 4 such as marine organisms adhering to the surface of the underwater metal pipe column 1 at the position where the discharge hole 2 is drilled, the adhering material removing device 6 is operated while rotating. The moving part 8 is moved in the circumferential direction, and the surface adhering substance removing part 9 for drilling is formed on the surface of the underwater metal pipe column 1 by removing the adhering substance 4 in a band shape. In this state, when the attachment driving gear 29 is driven to move the deposit removing device 6 backward and move to the retracted position, the punching device 3 moves forward with the retracting movement of the deposit removing device 6 and moves to the working position. Then, the drilling device 3 moved to this working position is operated, and the drilling work for drilling the discharge hole 2 in the drilling surface deposit removing part 9 is performed remotely on the work ship 13.

  When the drilling operation of the discharge hole 2 is completed, the operator dives into the water at one end, moves the deposit removal device 6 movably, and cuts the tip of the removal tool portion 12 (vibration scraper tool 12) of the deposit removal device 6. To match.

  When the alignment is completed, the operator leaves the work site again and moves the orbiting moving part 8 along the underwater metal pipe column 1 while operating the deposit removing device 6 on the work ship 13. The attached matter 4 such as marine organisms adhering to the cutting position of the metal tube support 1 is removed to form the attached matter removing portion 5 for cutting, and the tube cutting pretreatment is completed, and this embodiment is used. As shown in FIG. 16 and FIG. 17, a discharge hole 2 is drilled in the perforated surface deposit removing portion 9 in the submerged metal tube column 1 by the pipe body cutting pretreatment, and a position below the discharge hole 2 The cutting deposit removing portion 5 serving as the cutting position is formed.

  As described above, in this embodiment, the annular guide portion 7 is attached to the underwater metal pipe column 1 so that the drilling device 3 and the deposit removing device 6 are attached to the underwater metal tube column 1 via the annular guide portion 7. In addition, since the drilling work and the deposit removal work can be performed while moving this in the circumferential direction of the underwater metal pipe column 1 by remote operation, the worker holds the work tool as before and works. Since there is no need, the operator will not be forced to carry out a very troublesome task of obtaining a reaction force in the sea, and the operator will need to install a scaffolding at a cost to obtain the reaction force Since there is no need, it is possible to reduce the burden on the operator of drilling work and deposit removal work, which are pre-treatments when cutting the underwater metal pipe column 1, and to perform the work efficiently and at low cost. Excellent groundbreaking A tube before cutting processing device.

  In addition, the underwater metal pipe strut 1 embedded in the seabed ground may contain flammable gas such as natural gas leaked from the seabed ground, and the state where the flammable gas is accumulated. If the underwater metal pipe column 1 is drilled with the drilling device 3, the spark generated during drilling may ignite the combustible gas and explode. In this respect, in this embodiment, the drilling device 3 is drilled by remote control. Because it is configured freely, the operator does not have to be at the drilling site during drilling work, and the drilling work is performed on a safe place away from the drilling site, that is, on the work ship 13 anchored at sea. Therefore, it becomes an epoch-making pretreatment apparatus for cutting a tube excellent in safety.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Tube, Underwater metal pipe support | pillar 2 Discharge hole 3 Punching device 4 Deposit 5 Adherent removal part for cutting 6 Deposit removing device 7 Annular guide part 8 Circumferential movement part 9 Surface deposit removal part for drill
10 Drive roller
11 Energizing mechanism
12 Removal tool, vibration scraper tool

Claims (7)

  A perforation device for perforating a discharge hole for exhausting flammable gas in the pipe before cutting the pipe, and an adhering matter removing unit for removing the adhering matter adhering to the cutting position surface of the pipe An apparatus for pre-cutting a tube body including a deposit removing device for forming a tube, and an annular guide portion detachably attached to the periphery of the tube body so as to surround the tube body. A tube cutting pretreatment characterized in that a revolving movement unit is provided, the perforation device and the deposit removal device are provided in the revolving movement unit, and at least the perforation device is provided so as to be perforated by remote control. apparatus.   The deposit removing device is positioned on one side or the other side in the length direction of the tubular body from the discharge hole drilled by the punching device, and the deposit removing device is moved around the annular guide portion. The tube cutting device according to claim 1, wherein the cutting material removing portion is formed by removing the adhering material adhering to the surface of the tubular body by moving around through the portion. Pre-processing device.   The deposit removing device is provided in parallel with the circumferential movement direction of the perforating device, and the deposit removing device is movably provided in the length direction of the tubular body. A deposit adhered to the surface is removed to form a surface deposit removing portion for punching, and the discharge hole is drilled by the punching device in the surface deposit removing portion for drilling. Deposits adhered to at least the surface of the tube body by moving in the length direction of the tube body and moving around the discharge hole from one side or the other side in the length direction of the tube body The tube cutting pretreatment device according to any one of claims 1 and 2, characterized in that the cutting deposit removing part is formed by removing at least half a circle.   The orbiting moving portion presses the driving roller against the annular guide portion by an urging force by an urging mechanism or a pressing force by a pressing mechanism, and moves around the annular guide portion by driving control of the driving roller. Alternatively, the driving roller is configured to generate an orbital movement assisting force, and when the overload is generated in the removing tool portion of the deposit removing device, the driving roller is released against the biasing force or the pressing force. The tube cutting pretreatment device according to any one of claims 1 to 3, wherein the driving roller slips to stop or decelerate the circular movement of the circular moving unit. .   The adhering matter removing apparatus adopts a vibration scraper tool that presses against the tube surface at a predetermined angle and strikes and vibrates to remove the adhering matter adhering to the tube surface as the removing tool portion. The tube cutting pretreatment device according to any one of claims 1 to 4, wherein the tube cutting pretreatment device is characterized in that:   In addition to providing the perforating device and the deposit removing device in the circular moving portion, a cutting device for cutting the cutting deposit removing portion formed on the tubular body by the deposit removing device as a cutting position is also provided. The tube cutting pretreatment device according to any one of claims 1 to 5, wherein   The pipe body is a submarine metal pipe strut whose lower end is buried in the seabed ground, and as a pretreatment when cutting this submarine metal pipe strut with a cutting device with high heat, above the cutting position of this cutting device. The perforating apparatus is configured to perforate the discharge hole for discharging the combustible gas in the submarine metal pipe column, and is attached to the tube body surface below the discharge hole. The tube attachment cutting device according to any one of claims 1 to 6, wherein the deposit removing device is configured to remove a marine organism to form the cutting deposit removing portion. Processing equipment.

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