JP2012217945A - Apparatus and method for removing marine organism in piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for removing marine organisms in piping, reducing a work load in the sea without any facility and environmental problems caused by removed marine organisms.SOLUTION: The apparatus 3 for removing marine organisms includes a drum part 4 having a diameter smaller than the inner diameter of piping 1 and having a rotatable length inside the piping 1; guide parts 5 provided around the outer periphery of the drum part 4, and having casters abutting on the inner surface of the piping 1 to guide the drum part 4 in a sliding direction; marine organism eliminating parts 6 provided around the outer periphery of the drum part 4, and having blades that abut on the inner surface of the piping to scrape off the marine organisms sticking to the inner surface of the piping 1; and a traction part 7 provided at the end in the sliding direction of the drum part 4 and connecting a traction apparatus thereto. The apparatus 3 for removing the marine organisms is reciprocated inside the piping 1 by a wire 9 delivered from an external winch, to scrape off the marine organisms sticking to the inner surface of the piping 1.

Description

  The present invention relates to a sea life removing device in a pipe and a sea life removing method in the pipe.

In factories and power plants, in order to use a large amount of seawater as cooling water, piping is installed in the sea to take in seawater.
In such pipes for water intake, shellfish such as barnacles, seaweeds, etc. adhere to the pipes for many years, narrowing the pipelines in the pipes and reducing the amount of water intake. .
Conventionally, in order to remove marine life adhering to the pipe, seawater in the pipe is drawn out, and an operator enters the pipe and removes marine life adhering with a scraper or the like.

However, in such a method, it is difficult for the operator to perform the work, and the work must be performed in a work environment such as a bad odor. In addition, there is a problem that water cannot be taken during the removal work period.
Further, when water is not drained, there is a problem that manpower work of underwater workers such as divers is required, requiring specialized skills.
For this reason, for example, a method has been proposed in which an unmanned sea life removal device is installed in a pipe, the sea life removal device is driven using the force of running water in the pipe, and the attached sea life is removed ( For example, see Patent Document 1).

JP 09-75879 A

  However, in the technique described in Patent Document 1, since the sea life removal apparatus is driven using the force of flowing water in the pipe, the removed sea life also flows along with the flowing water. May adversely affect downstream equipment or be discharged outside the piping, causing environmental problems.

  An object of the present invention is to provide a marine organism removing apparatus in a pipe and a marine organism removing method in a pipe that have a small work burden in the sea and the removed marine life does not cause problems in facilities and environment. .

The gist of the present invention is as follows.
[1] A sea life removal device in a pipe that removes sea life attached to the inner surface of the pipe by sliding inside the pipe in the sea,
A body portion having a diameter smaller than the inner diameter of the pipe, and having a length rotatable inside the pipe;
A guide part provided around the outer periphery of the body part, having a caster that contacts the inner surface of the pipe, and guiding the body part in a sliding direction;
A sea life removal unit that is provided around the outer periphery of the body part, has a blade that contacts the inner surface of the pipe, and scrapes off sea life attached to the inner surface of the pipe;
A marine organism removing device in a pipe, comprising: a traction portion provided at an end portion of the trunk portion in a sliding direction, to which a traction device is connected.

[2] In the sea life removal device in the pipe according to [1],
The sea life removal unit is provided around the outer periphery of the body part, and includes a plurality of blade members provided with the blades at the tips.
Each of the plurality of blade members is detachable or foldable with respect to the body part, and the sea life removing device in the pipe is characterized in that:
[3] In the sea life removal device in the pipe according to [2],
The blade member is provided between an arm portion projecting from the outer peripheral surface of the body portion and the arm portion and the blade, and can project and retract the blade according to the shape of the inner surface of the pipe in contact with the blade member. A marine organism removing device in a pipe, characterized by comprising a buffering portion.
[4] In the sea life removal device in the pipe according to [3],
The apparatus for removing marine life in a pipe, wherein the blade member includes an adjustment unit that adjusts a position in the protruding direction of the blade.

[5] In the sea life removal device in the pipe according to any one of [2] to [4],
The guide part is provided around the outer periphery of the body part, and includes a plurality of leg members provided with a caster at the tip.
Each of the plurality of leg members is detachable or foldable with respect to the trunk part, and the sea life removing device in the pipe is characterized in that
[6] In the sea life removal apparatus in the pipe according to [5],
The leg member includes an arm part protruding from the outer peripheral surface of the body part, and the caster provided at the tip of the arm part,
The caster includes a wheel that contacts the inner surface of the pipe, and a holder that rotatably holds the wheel and holds the wheel so that it can protrude and retract according to the inner surface shape of the pipe that contacts the wheel. Sea life removal device in piping characterized by

[7] In the sea life removal apparatus in the pipe according to any one of [2] to [6],
A plurality of the sea life removal units are provided in the length direction of the body part,
Among the plurality of sea life removal units, the arrangement of the plurality of blade members forming any one sea life removal unit is shifted from the arrangement of the plurality of blade members forming another sea life removal unit. The apparatus for removing marine organisms in a pipe is characterized in that a blade comes into contact with the entire inner circumference of the pipe in the whole of the plurality of marine organism removal units.
[8] In the sea life removal apparatus in the pipe according to [7],
The sea life removal device in a pipe, wherein the guide portion is provided between two sea life removal portions of the plurality of sea life removal portions.

[9] In the sea life removal device in the pipe according to any one of [1] to [8],
The apparatus for removing marine organisms in a pipe is characterized in that at least two casters of the guide part are in contact with an inner surface of the pipe below the body part.
[10] In the sea life removal apparatus in the pipe according to any one of [1] to [9],
The body part is formed of a cylindrical body having both ends opened, and the sea life removing device in the pipe is characterized in that:
[11] In the sea life removal device in the pipe according to [10],
The body part is provided with a ring-shaped rib that protrudes from the inner surface of the cylindrical body and extends in the inner circumferential direction of the cylindrical body.

[12] In the sea life removal apparatus in the pipe according to any one of [1] to [11],
The traction part is any of a plurality of string-like members, belt-like members, and chain-like members that are provided at both ends in the sliding direction of the body part and are attached at an equal pitch around the outer periphery of the body part. Sea life removal device in the pipe.

[13] In the sea life removal apparatus in the pipe according to any one of [1] to [12],
The pipe is provided with a manhole penetrating the inside and outside of the pipe,
The sea life removing device in a pipe, wherein the body portion has a diameter smaller than the diameter of the manhole.
[14] In the sea life removal apparatus in the pipe according to any one of [1] to [13],
The traction device is a winch that is provided outside the pipe and includes a wire connected to any of a plurality of string-like members, belt-like members, and chain-like members that constitute the traction portion,
An apparatus for removing marine organisms in a pipe, comprising: a wire guide portion that is fixed to the manhole and guides the wire to the outside of the pipe through the manhole.

[15] A method for removing marine organisms in a pipe using a marine organism removing apparatus that removes marine organisms attached to the inner surface of the pipe by sliding inside the pipe in the sea,
The sea life removal device is:
A body portion having a diameter smaller than the inner diameter of the pipe;
A guide part provided around the outer periphery of the body part, having a caster that contacts the inner surface of the pipe, and guiding the body part in a sliding direction;
A sea life removal unit that is provided around the outer periphery of the body part, has a blade that contacts the inner surface of the pipe, and scrapes off sea life attached to the inner surface of the pipe;
A traction portion provided at an end portion in the sliding direction of the body portion and connected to a traction device provided outside the pipe;
Carrying the marine organism removal device into the pipe;
Driving the traction device and reciprocating the marine organism removal device in the sliding direction inside the pipe to scrape off marine life adhering to the inner surface of the pipe with the blade;
A method for removing marine life in a pipe, comprising: collecting the marine life that has been scraped off and carrying it out of the pipe through the manhole.

[16] In the sea life removal method in the pipe according to [15],
The body portion has a diameter smaller than the diameter of the manhole, and has a length that can be rotated inside the pipe,
The guide part and the sea life removing part are configured to be detachable or foldable with respect to the body part,
Between the step of bringing the sea life removal device into the pipe and the step of scraping off the sea life,
After carrying in the body part, aligning the length direction of the body part with the sliding direction of the pipe;
A method for removing marine life in a pipe, comprising: a step of bringing a caster of the guide part and a blade of the sea life removing part into contact with an inner surface of the pipe.

According to the present invention, since the marine organism removal device can be reciprocated in the pipe by the traction device provided on the outside, for example, on the ship, the marine life attached to the pipe in the sea can be scraped off, Meanwhile, an underwater worker such as a diver can omit the work of scraping off marine life with a scraper, and the work load in the sea such as a diver can be reduced.
In addition, aquatic organisms such as pumps are installed on the sea, and water pumps such as hoses are connected to the pumps. Divers and other underwater workers enter the pipes and collect them to collect them. Since it can be carried out, the marine life scraped off does not adversely affect the equipment on the downstream side of the pipe and does not damage the environment outside the pipe.

The side view showing the structure of the sea life removal apparatus in the piping which concerns on embodiment of this invention. The front view showing the structure of the guide part of the sea life removal apparatus in the piping in the said embodiment. The side view and front view showing the structure of the leg member of the marine organism removal apparatus in piping in the said embodiment. The front view showing the structure of the sea life removal part of the sea life removal apparatus in the piping in the said embodiment. The front view showing the structure of the sea life removal part of the sea life removal apparatus in the piping in the said embodiment. The side view and front view showing the structure of the blade member of the marine organism removal apparatus in the piping in the said embodiment. The top view showing the structure of the wire guide part of the marine organism removal apparatus in the piping in the said embodiment. The schematic diagram showing a part of sea life removal method in piping in the said embodiment. The schematic diagram showing a part of sea life removal method in piping in the said embodiment. The schematic diagram showing a part of sea life removal method in piping in the said embodiment. The schematic diagram showing a part of sea life removal method in piping in the said embodiment. The schematic diagram showing a part of sea life removal method in piping in the said embodiment. The schematic diagram showing a part of sea life removal method in piping in the said embodiment. The schematic diagram showing a part of sea life removal method in piping in the said embodiment.

In the present invention, the sea life removing unit is provided around the outer periphery of the body part, and includes a plurality of blade members provided with the blades at the tips, and each of the plurality of blade members is detachable from the body part or The guide part is provided around the outer periphery of the body part, and includes a plurality of leg members each having a caster at the tip, and each of the plurality of leg members is detachable from the body part or It is preferably foldable.
According to the present invention, a plurality of blade members and a plurality of leg members can be removed from the body portion or carried into the pipe in a folded state. Therefore, the sea life removal device can be carried in via a manhole or the like provided in the pipe, and after carrying in, an underwater worker assembles the sea life removal device inside the pipe and removes the sea life in the pipe. (2 and 5 effects).

In the present invention, an arm portion that protrudes and is fixed to the outer peripheral surface of the body portion, and a buffer that is provided between the arm portion and the blade so that the blade can protrude and retract according to the inner surface shape of the abutting pipe. It is preferable to provide a part.
Here, the buffer portion biases the blade to the inner surface of the pipe with a certain amount of force, and may be constituted by a biasing member such as an elastic member such as a coil spring or rubber between the arm portion and the blade, for example. it can.
According to this invention, since the blade projects and sinks according to the inner surface shape of the pipe by the buffer portion, the blade is brought into contact with the inner surface of the pipe even if there is some unevenness or deformation on the inner surface of the pipe. The attached marine life can be surely removed (effect 3).

In the marine organism removing device in the pipe of the present invention, it is preferable that the blade member is provided with an adjustment unit that adjusts the protruding direction position of the blade.
Here, for example, the adjusting portion can be formed of a rod-like member having a male screw formed on the arm portion side base end portion and provided with a blade at the tip, and a screw-engaging member such as a nut at the base end portion of the rod-like member. What fixes to an arm part by is preferable.
According to this invention, since the blade member is provided with the adjustment portion, it is possible to adjust the protruding direction position of the blade, so even if the body portion is arranged at a position shifted from the center of the pipe inside the pipe, By adjusting the position of the blade in the protruding direction, the blade can be brought into contact with the inner surface of the pipe and the marine life can be scraped off (effect 4).

In the present invention, the leg member includes an arm portion protruding from the outer peripheral surface of the body portion and a caster provided at the tip of the arm portion. The caster rotates a wheel that contacts the inner surface of the pipe and the wheel. It is preferable to include a holder that holds the wheel so as to protrude and retract according to the shape of the inner surface of the pipe that is held and abuts.
According to this invention, since the holder holds the wheel so that it can protrude and retract according to the inner surface shape of the pipe, even if there is some unevenness or deformation in the inner surface shape of the pipe, the sea life removal device can be smoothly slid. (6 effects).

In the present invention, a plurality of sea life removal units are provided in the longitudinal direction of the body part, and among the plurality of sea life removal units, the arrangement of a plurality of blade members forming any one sea life removal unit is different. It is preferable that the blades are in contact with the entire inner periphery of the pipe in the entire plurality of sea life removal units.
According to this invention, since all the marine life adhering to the inner surface of the piping can be scraped off by bringing the blade into contact with the entire inner surface of the piping in the entire plurality of sea life removal units, the blade adheres to the inner surface of the piping. Marine organisms can be reliably removed (effect of 7).

In this invention, it is preferable that the guide part is provided between two sea life removal parts among several sea life removal parts.
According to the present invention, when the sea life removing device is slid inside the pipe, the caster can be brought into contact with the inner surface of the pipe from which the sea life has been scraped off at either of the sea life removing portions on both sides. Therefore, the sea life removal device can be smoothly slid inside the pipe (effect of 8).

In the present invention, it is preferable that at least two casters of the guide part casters abut against the inner surface of the pipe below the body part.
According to the present invention, the at least two casters abut against the inner surface of the pipe below the trunk section, so that the trunk section can be supported by the at least two casters. Work can be reduced (9 effects).

In the present invention, the body portion is preferably formed of a cylindrical body having both ends opened.
According to the present invention, since the body portion is formed from the cylindrical body, the seawater in the pipe can be circulated inside the cylindrical body. When sliding, the resistance of seawater can be reduced, and the sea life removal device can be slid with a small traction force.
In addition, when there is an underwater worker such as a diver at the time of sea life removal work by the sea life removal apparatus inside the pipe, the space inside the cylindrical body can be made an emergency evacuation space (10 effects) ).

In the marine organism removing device in the pipe of the present invention, it is preferable to include a ring-shaped rib protruding from the inner surface of the cylindrical body and extending in the inner circumferential direction of the cylindrical body.
According to this invention, since the trunk portion is provided with the ring-shaped ribs, the trunk portion can be reinforced, so that the plate thickness of the cylindrical body forming the trunk portion can be reduced. It is possible to reduce the work load of the underwater worker such as a diver by reducing the weight (effect of 11).

In the present invention, the traction portion is any of a plurality of string-like members, strip-like members, and chain-like members that are provided at both ends in the sliding direction of the trunk portion and are attached at equal pitches around the outer circumference of the trunk portion. Is preferred.
Here, as the string-like member, the band-like member, and the chain-like member, various members used in the towing operation can be adopted, and for example, a steel wire, a sling rope, a chain, and the like can be adopted.
According to the present invention, the traction portion is formed from any one of a plurality of string-like members, strip-like members, and chain-like members that are attached at equal pitches around the outer periphery of the trunk portion, so that the winch is externally connected to the pipe. The sea life removal device can be pulled and slid by, for example, and the trunk part can be stably pulled by attaching the string-like member, the band-like member, and the chain-like member around the outer periphery of the trunk part at an equal pitch. (12 effects).

In the present invention, a manhole penetrating the inside and outside of the pipe is provided in the pipe, and the body portion preferably has a diameter smaller than the diameter of the manhole.
According to this invention, since the diameter of the trunk part of the sea life removal apparatus is smaller than the diameter of the manhole provided in the pipe, the trunk part can be carried in via this manhole.
In addition, when the trunk portion has such a size, an underwater worker such as a diver can easily handle the inside of the pipe, so that the assemblability of the sea life removal apparatus is improved (effect 13).

In the present invention, the traction device is a winch provided outside the pipe and provided with a wire connected to any of a plurality of string-like members, strip-like members, and chain-like members constituting the traction portion, and is fixed to the manhole. It is preferable that a wire guide portion for guiding the wire to the outside of the pipe through the manhole is provided.
According to the present invention, since the wire guide portion is provided, the wire can be prevented from being twisted or caught inside the pipe, so that the towing device such as a winch can be efficiently pulled from the outside of the pipe. The sea life removal work can be performed efficiently (14 effects).

  The sea life removal method in a pipe of the present invention is a sea life removal method in a pipe using a sea life removal device that removes sea life attached to the inner surface of the pipe by sliding the inside of the pipe in the sea. The sea life removal apparatus has a trunk portion having a diameter smaller than the inner diameter of the pipe and a caster that is provided around the outer circumference of the trunk section and abuts against the inner surface of the pipe, and guides the trunk portion in the sliding direction. Provided at the guide part, the sea life removal part that is provided around the outer periphery of the body part, has a blade that contacts the inner surface of the pipe, scrapes off the sea life attached to the inner surface of the pipe, and the end part in the sliding direction of the body part A traction unit to which a traction device provided outside the pipe is connected, and a step of carrying the marine organism removal device into the pipe; driving the traction device; To reciprocate in the sliding direction Performing a step of scraping off marine life adhering to the inner surface of the pipe with a blade, and a step of collecting the marine life scraped off and carrying it out of the pipe via the manhole. It is characterized by.

Here, for collecting and carrying out the marine organisms that have been scraped off, a fluid conveyance device such as a pump is installed on the sea, and a water collecting pipe such as a hose is connected to this, so that an underwater worker such as a diver can explain it along with the sea water. May be recovered and carried out of the piping.
According to the present invention, the sea life attached to the inner surface of the pipe can be removed by simply sliding the sea life removal device inside the pipe by pulling with an external pulling device. Workers only need to collect and carry out the marine life that has been scraped off, which can reduce the work burden on the submarine workers, and the marine life that has been scraped off will not adversely affect downstream equipment. (15 effects).

In the present invention, the trunk part has a diameter smaller than the diameter of the manhole, has a length that can rotate inside the pipe, and the guide part and the sea life removal part can be attached to and detached from the trunk part, or It is configured to be foldable, and after the body part is carried in between the step of bringing the sea life removal device into the pipe and the step of scraping off the sea life, the length direction of the body part is set to the sliding direction of the pipe. And a step of bringing the caster of the guide portion and the blade of the sea life removal portion into contact with the inner surface of the pipe.
According to the present invention, since the underwater worker can assemble the sea life removal device inside the pipe after the sea life removal device is carried in, each part can be downsized to reduce the carry-in work of the underwater worker. (16 effects).

[Embodiment of the Invention]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[1] Structure of sea life removal device Fig. 1 shows a water intake pipe 1 for taking in seawater for cooling in facilities such as steelworks and power plants, and this water intake pipe 1 includes underwater such as divers. A manhole 2 is provided for an operator to check the inside of the intake pipe 1.
Inside the intake pipe 1, a sea life removal device 3 for a pipe that removes marine organisms attached to the inner surface of the intake pipe 1 is arranged.
The sea life removal apparatus 3 includes a body part 4, a guide part 5, a sea life removal part 6, a traction part 7, and a wire guide part 8, and is configured with a wire guide part 8 attached to the manhole 2. By pulling the marine organism removal device 3 from the outside via the wire 9, the inside of the intake pipe 1 can be slid to remove the marine organism attached to the inner surface of the intake pipe 1.

[1-1] Detailed structure of the body part 4 The body part 4 is a body for attaching the guide part 5 and the sea life removal part 6 to a cylindrical steel pipe having both ends opened. The diameter of the body part 4 is smaller than the inner diameter of the intake pipe 1 so that the guide part 5 and the sea life removal part 6 can be attached, and more preferably the inner diameter of the manhole 2 so that it can be carried in from the manhole 2. The diameter is smaller than that.
In addition, the inner diameter of the body portion 4 is preferably set to an inner diameter of, for example, about 800 mm to 850 mm so that it can be used as an emergency evacuation route for a submarine worker.
A hanging bracket 41, a traction portion mounting bracket 42, a leg member mounting bracket 44, and a blade member mounting bracket 45 (not shown in FIG. 1) protrude from the outer peripheral surface of the body portion 4 and are cylindrical. Ring-shaped reinforcing ribs 43 are provided on the inner peripheral surface of the body.
The suspension bracket 41 is formed of a perforated plate joined to the outer peripheral surface of the body portion 4 by welding or the like. When an underwater worker changes the posture of the body portion 4 inside the intake pipe 1, a winch outside the manhole 2. By attaching a wire from a traction device such as this to the suspension bracket 41 and suspending the trunk portion 4, the work load of the underwater worker when assembling the marine organism removal device 3 is reduced.

The traction part mounting brackets 42 are made of perforated plates joined to both ends of the body part 4 by welding or the like, and are provided at four locations around the outer periphery of the body part 4 so as to form an angle of 90 degrees with each other. When it is towed by the part 7, it is arranged such that an even traction force acts on the body part 4.
The reinforcing rib 43 is provided so as to protrude from the inner surface of the cylindrical body of the body portion 4 and is constituted by a ring-shaped rib extending along the radial plane of the cylindrical body. The reinforcing ribs 43 are provided at a total of three locations, two at the opening end of the body portion 4 and one at the approximate center of the body portion 4. When an external force acts on the body portion 4, the deformation of the body portion 4 is prevented. It functions as a reinforcing member to prevent.
As will be described in detail later, the leg member mounting bracket 44 is a portion that includes a perforated plate joined to the outer peripheral surface of the body portion 4 by welding or the like, and is a portion to which the leg member 51 constituting the guide portion 5 is attached.

[1-2] Detailed Structure of Guide Part 5 As shown in FIG. 1, the guide part 5 is provided at two locations in the sliding direction of the sea life removing device 3. When the guide part 5 is slid inside the intake pipe 1, the guide part 5 guides the cylindrical center of the body part 4 to slide along the center of the intake pipe 1. As shown in FIG. 2 as viewed from the sliding direction of the sea life removing device 3, the two guide portions 5 are composed of a plurality of leg members 51 that project radially from the outer peripheral surface of the body portion 4.
The leg member 51 includes a fixed arm portion 52 and a caster 53, and each caster 53 comes into contact with the inner surface of the intake pipe 1. Arrangement | positioning of the several leg member 51 in the outer peripheral surface of the trunk | drum 4 is the intake pipe 1 one place at the upper surface inner surface (upward direction of FIG. 2) and the left-right direction inner surface (left-right direction of FIG. 2). The casters 53 are in contact with each other on the inner surface in the downward direction.
The number and arrangement of the plurality of leg members 51 are not limited to this, and more leg members 51 may be attached. However, at least two or more leg members 51 may be provided below the body portion 4. It is preferable that the leg member 51 is disposed and the body portion 4 is supported from below.

As shown in FIGS. 3 (A) and 3 (B), the fixed arm portion 52 of the leg member 51 is composed of a square steel pipe, and a pair of the square steel pipes facing each other is omitted from the proximal end in the protruding direction. Two holes are formed in each of the side surfaces. The fixed arm portion 52 is fastened at two locations in the sliding direction of the sea life removing device 3 by bolts and nuts 441 inserted through holes formed in the leg member mounting bracket 44 at the hole portions.
At the time of attachment, the bolt nut 441 is attached to one of the holes formed in the leg member attachment bracket 44, the leg member 51 is rotatably attached, and then the leg member 51 is rotated around the attachment portion, After alignment, the bolt nut 441 is attached to the other hole, and all the bolt nuts 441 are fastened. Therefore, the leg member mounting bracket 44 is provided with a stopper that restricts the rotation of the leg member 51 at a predetermined position, although not shown.
A flange plate 521 is provided at the front end of the fixed arm 52 in the protruding direction, and a caster 53 is fastened to the flange plate 521 by a bolt nut or the like, although not shown.
The caster 53 includes a wheel 54 that contacts the inner surface of the intake pipe 1 and a holder 55 that rotatably holds the wheel 54.

The wheel 54 has a configuration in which a resin tire is wound around an outer periphery of a steel disc body, and is rotatably held by a holder 55 at the center of the disc body.
The holder 55 includes a fixing portion 551 fixed to the flange plate 521 and a wheel holding portion 552 that holds the wheel 54, and the wheel holding portion 552 is rotatable with respect to the fixing portion 551 via a hinge 553. It is attached.
The fixing portion 551 has a shape in which a steel plate is bent or combined in a substantially U shape, and a coil spring 554 is accommodated inside the U shape.
The coil spring 554 urges the wheel holding portion 552 in the protruding direction of the fixed arm portion 52. When the inner surface of the intake pipe 1 is uneven or deformed, the coil spring 554 is elastically deformed and the wheel holding portion The buffering function is secured by rotating 552 and causing the wheel 54 to protrude and retract.

[1-3] Detailed structure of the sea life removal unit 6 As shown in FIG. 1, the sea life removal unit 6 is provided at two ends in the sliding direction of the body 4 and is attached to the inner surface of the intake pipe 1. It is the part that scrapes off. The guide unit 5 described above is provided between the two sea life removal units 6, and the caster 53 of the guide unit 5 contacts the inner surface of the intake pipe 1 from which the sea life has been scraped off by the sea life removal unit 6. It comes to touch.
Each of the two sea life removing sections 6 is composed of a plurality of blade members 61 that project around the outer peripheral surface of the body section 4.
The blade member 61 includes a fixed arm portion 62, a buffer portion 63, and a blade 64, and each blade 64 comes into contact with the inner surface of the intake pipe 1. The arrangement of the plurality of blade members 61 on the outer peripheral surface of the body part 4 is as follows.
That is, as shown in FIG. 4, the sea life removing unit 6 at the left end in FIG. 1 has the blade members 61 at a uniform pitch around the outer peripheral surface of the body unit 4 starting from the vertical upper side of the body unit 4. Nine are arranged.

On the other hand, as shown in FIG. 5, the sea life removal unit 6 at the right end in FIG. 1 has the blade members 61 at equal pitches around the outer peripheral surface of the body 4 starting from the vertically lower side of the body 4. Nine are arranged.
The arrangement of the blade member 61 of the sea life removal unit 6 in FIG. 4 and the arrangement of the blade member 61 in FIG. 5 are between the two blade members 61 of one sea life removal unit 6 when viewed from the sliding direction. Further, the blade member 61 of the other sea life removing unit 6 is arranged in a staggered manner.
That is, the arrangement of the blade member 61 in each sea life removal unit 6 is combined in a phase shifted state, and when both the sea life removal units 6 are combined in the sliding direction, all the blades 64 are connected to the inner surface of the intake pipe 1. It arrange | positions so that it may contact | abut to a perimeter.
It should be noted that the number and arrangement of the plurality of blade members 61 in each sea life removal unit 6 are not limited to this, and the pitch need not be the same, but only the phases of the sea life removal units 6 are shifted. In view of the fact that all the blades 64 can be brought into contact with the entire inner circumference of the intake pipe 1, it is preferable to arrange the blade members 61 at a uniform pitch.

As shown in FIGS. 6 (A) and 6 (B), the fixed arm portion 62 of the blade member 61 is composed of an H-shaped steel attached with the extending direction of the flange aligned with the sliding direction of the sea life removing device 3. Has been. Cutout holes 622 are formed at both ends of the fixed arm 62 in the extending direction of the web 621. The cutout hole 622 is formed in order to reduce the resistance of the water flow as much as possible when the marine organism removal device 3 moves in the sliding direction.
In addition, although not shown in the drawings, two holes are formed in the proximal end portion of the flange surface of the fixed arm portion 62.
The body part 4 is formed with a pair of blade member mounting brackets 45 provided so as to sandwich the flange surface of the fixed arm part 62, and the fixed arm part 62 is formed on the blade member mounting bracket 45. Fastened by bolts and nuts 451 attached to the two holes.
An end plate 623 is provided at the distal end of the fixed arm 62 in the protruding direction, and the buffer 63 is attached to the end plate 623.

The buffer part 63 is composed of a double pipe provided with an outer steel pipe 631 standing on the end plate 623 and an inner steel pipe 632 housed in the outer steel pipe 631, and the sliding direction of the sea life removing device 3. A pair is arranged.
The inner steel pipe 632 to be installed is configured as a bottomed pipe whose base end portion is closed with a plate, and a long bolt 633 is inserted into a hole formed in the bottom.
A coil spring 634 disposed inside the outer steel pipe 631 is inserted into the long bolt 633, and an end of the long bolt 633 passes through the end plate 623, and a double nut 635 is screwed thereunder. .
Further, the pair of outer steel pipes 631 are connected and integrated by a steel connecting plate 636, and a right-angled triangular reinforcing plate 637 is joined to the center of the connecting plate 636 by welding to form a right-angled triangular tube. The bottom side is joined to the end plate 623 by welding.
Further, a blade 64 is fixed to the front end in the protruding direction of the inner steel pipe 632 by welding.

  The blade 64 is composed of an arc-shaped steel plate along the cylindrical inner surface of the intake pipe 1. Tapers 641 are formed at both ends of the blade 64 in the sliding direction. The taper 641 is formed so as to become thinner toward the tip of the sea life removal device 3 in the sliding direction, and secures a function of facilitating shaving off the sea life attached to the inner surface of the intake pipe 1.

In the buffer 63 and the blade 64, the coil spring 634 urges the blade 64 toward the inner surface of the water pipe 1 via the inner steel pipe 632.
When the inner surface of the intake pipe 1 is uneven or deformed, the coil spring 634 is elastically deformed to change the contact position of the blade 64 to ensure a buffer function to follow the inner shape of the intake pipe 1.
Further, the double nut 635 provided at the end of the long bolt 633 ensures a function as an adjusting portion for adjusting the protruding amount of the blade 64 by changing the screwing position with the long bolt 633.

[1-4] Detailed Structure of Towing Part 7 As shown in FIG. 1, the towing part 7 is attached to both ends of the body part 4 in the sliding direction and attached to the towing part mounting bracket 42, and a chain. A shackle 72 inserted substantially at the center of 71 and a moving pulley 73 attached to the end of the shackle 72, transmit the traction force from the wire 9 to the body portion 4, and take the marine organism removal device 3 of the water pipe 1. It is the part that slides inside.
In the present embodiment, the number of the chains 71 is two, and the ends of the chains 71 are connected to a pair of traction portion mounting brackets 42 that are arranged to face each other around the center of the cylinder of the body portion 4.
The shackle 72 is composed of a pair of rings that can rotate with respect to the connecting direction as an axis. The chain 71 is inserted into one ring, and a movable pulley 73 is attached to the other ring. The shackle 72 absorbs the twisting force by rotating the other ring with respect to one ring even when a force such as twisting acts on the wire 9 during the pulling of the sea life removal device 3. However, it is provided in order to prevent the twisting force from acting on the body portion 4.
The wire 9 is inserted through the movable pulley 73, and the tip of the wire 9 is fixed to a wire fixing bracket 86 described later. This moving pulley 73 is provided in order to reduce the load applied to the wire 9 by halving the force to be pulled by the sea life removing device 3.

[1-5] Detailed Structure of Wire Guide 8 As shown in FIG. 1, the wire guide 8 is provided in the manhole 2 and includes a horizontal member 81, a vertical member 82, a diagonal member 83, and an upper pulley. 84 and a lower pulley 85, which is a portion that guides the wire 9 wound and fed by a winch provided in a marine vessel to be described later into the intake pipe 1 through the manhole 2.
As shown in FIG. 7, two horizontal members 81 are installed on the flange 21 at the upper end of the manhole 2. The horizontal member 81 is made of C-shaped steel. Each horizontal member 81 is disposed with the vertical portions of the C-shaped steel facing each other, and the upper pulley 84 is rotatably held between the two horizontal members 81.
Further, a vertical member 82 is joined and fixed in the vicinity of the attachment position of the upper pulley 84.

The vertical member 82 hangs down from each of the two horizontal members 81, and a lower pulley 85 is rotatably held by the two vertical members 82 in the vicinity of the lower end thereof, similarly to the upper pulley 84. . Of the two vertical members 82, one vertical member 82 is provided with a wire fixing bracket 86 to which the wire 9 is fixed.
The diagonal member 83 is formed of an L angle and is installed between the horizontal member 81 and the vertical member 82 so that the horizontal member 81 and the vertical member 82 are not deformed by the traction force transmitted through the wire. It is provided to reinforce.

[2] Sea Life Removal Method Using Sea Life Removal Device 3 Next, a method for removing sea life attached to the inner surface of the intake pipe 1 using the sea life removal device 3 will be described.
First, as shown in FIG. 8, under the supervision of the work monitoring ship 11, the work ship 12 is operated in the vicinity of the work area, and the underwater worker 13 dives into the installation position of the manhole 2, so A hole is made in the top, and then the manhole 2 is conveyed and set in the hole formed in the intake pipe 1. In addition, when the intake pipe 1 is buried with earth and sand, the earth and sand are removed by an air lift, a jet pump, etc., but a pollution prevention sheet 14 or the like is installed in advance so that the removed earth and sand does not contaminate the surrounding environment. Is preferred.

  Next, as shown in FIG. 9, the underwater worker 13 welds and joins the manhole 2 to the water pipe 1 using an underwater welding machine or the like. For the welding of the manhole 2 in water, the winch 15 provided on the work boat 12 is used to suspend the manhole 2 with the wire 9 and one of the two submarine workers 13 is the manhole 13. 2, the other underwater worker 13 performs the welding work. In addition, it is preferable to provide such manholes 2 at a pitch that can ensure the straightness of the intake pipe 1 with the bent portion of the intake pipe 1 as a starting point.

When the installation work of the manhole 2 is completed, the sea life removal device 3 is carried into the water pipe 1.
As shown in FIG. 10, the body portion 4 is carried into the intake pipe 1 from the opening of the manhole 2 by the winch 15 of the work boat 12 so that the length direction of the body portion 4 faces the vertical direction. At this time, if the wire 9 is attached to the shackle 72 (not shown in FIG. 11) of the pulling portion 7, the length direction of the body portion 4 faces the vertical direction.
If the trunk | drum 4 is carried in in the intake pipe 1, as shown in FIG. 11, the trunk | drum 4 will be rotated to a length direction. At this time, another wire 9 is fed out from the winch 15 and attached to the suspension bracket 41 of the body portion 4, and the body portion 4 is easily rotated by winding the wire 9 attached to the suspension bracket 41. To do.

When the body part 4 is turned sideways, attachment of the leg member 51 and the blade member 61 is started.
First, by winding the wire 9 attached to the hanging bracket 41 (not shown in FIG. 12), the body part 4 is rotated, and as shown in FIG. The leg member 51 is attached by rotating the leg member 51 so that the position of the leg member 51 to be arranged is turned upward.
Next, as shown in FIG. 12B, the wire 9 is wound up, the body portion 4 is rotated, the two leg members 51 are disposed below, and the body portion 4 is connected to the intake pipe 1. Lift up to the center of the pipe. Thereafter, as shown in FIG. 12C, the leg members 51 in the horizontal direction and the vertically upward direction are sequentially attached to form the guide portion 5.
When the guide part 5 is formed, the blade member 61 is attached to the body part 4, and the sea life removing part 6 is formed on the body part 4 (not shown).

When the assembly of the sea life removing device 3 is completed, the wire guide portion 8 is installed in the manhole 2 and the wire 9 is passed through the pulleys 84 and 85 of the wire guide portion 8 and the movable pulley 73 of the traction portion 7. The end is attached to the wire fixing bracket 86.
As shown in FIG. 13, the wire 9 is attached in two manholes 2 that sandwich the sea life removal device 3.

When the above is completed, the removal of sea life by the sea life removal apparatus 3 is started. As shown in FIG. 13, the sea life removal apparatus 3 is attached to the wire 9 of the winch 15 provided on the two work ships 12, and when the wire 9 from one work ship 12 is wound, the other The winch 15 is driven so that the wire 9 from the work ship 12 is fed out.
If it does in this way, the marine organism removal apparatus 3 will move the inside of the intake pipe 1 with the tractive force of the winch 15, and the marine organism adhering to the inner surface of the intake pipe 1 will be removed by the blade 64.

When the removal of the attached sea life by the sea life removal device 3 is completed, the sea life removal device 3 is disassembled and carried out of the intake pipe 1.
After the carry-out, as shown in FIG. 14, the underwater worker 13 enters the intake pipe 1 again, removes the deposits left by a scraper, etc., and marine organisms scraped by an air lift, a jet pump, etc. Is collected and transported to sea. In addition, when returning seawater, in order to prevent seawater from being contaminated by the collected marine organisms, it is preferable to previously install a pollution prevention sheet 14 or the like.

  DESCRIPTION OF SYMBOLS 1 ... Water intake piping, 2 ... Manhole, 3 ... Sea life removal apparatus, 4 ... Body part, 5 ... Guide part, 6 ... Sea life removal part, 7 ... Traction part, 8 ... Wire guide part, 9 ... Wire, 11 ... Work monitoring ship, 12 ... Work ship, 13 ... Underwater worker, 14 ... Pollution prevention sheet, 15 ... Winch, 21 ... Flange, 41 ... Hanging bracket, 42 ... Traction mounting bracket, 43 ... Reinforcement rib, 44 ... Leg member mounting bracket, 45 ... Blade member mounting bracket, 51 ... Leg member, 52 ... Fixed arm portion, 53 ... Caster, 54 ... Wheel, 55 ... Holder, 61 ... Blade member, 62 ... Fixed arm portion, 63 ... Buffer section, 64 ... blade, 71 ... chain, 72 ... shackle, 73 ... dynamic pulley, 81 ... horizontal member, 82 ... vertical member, 83 ... diagonal member, 84 ... upper pulley, 85 ... lower pulley, 86 ... wire fixed Brake 441 ... bolt nut, 451 ... bolt nut, 521 ... flange plate, 551 ... fixing part, 552 ... wheel holding part, 553 ... hinge, 554 ... coil spring, 621 ... web, 622 ... notch hole, 623 ... end plate, 631 ... Outer steel pipe, 632 ... Inner steel pipe, 633 ... Long bolt, 634 ... Coil spring, 635 ... Double nut, 636 ... Connection plate, 637 ... Reinforcement plate, 641 ... Taper

Claims (16)

A sea life removal device in a pipe that removes sea life attached to the inner surface of the pipe by sliding the inside of the pipe in the sea,
A body portion having a diameter smaller than the inner diameter of the pipe, and having a length rotatable inside the pipe;
A guide part provided around the outer periphery of the body part, having a caster that contacts the inner surface of the pipe, and guiding the body part in a sliding direction;
A sea life removal unit that is provided around the outer periphery of the body part, has a blade that contacts the inner surface of the pipe, and scrapes off sea life attached to the inner surface of the pipe;
A marine organism removing device in a pipe, comprising: a traction portion provided at an end portion of the trunk portion in a sliding direction, to which a traction device is connected. In the sea life removal apparatus in the pipe according to claim 1,
The sea life removal unit is provided around the outer periphery of the body part, and includes a plurality of blade members provided with the blades at the tips.
Each of the plurality of blade members is detachable or foldable with respect to the body part, and the sea life removing device in the pipe is characterized in that: In the sea life removal apparatus in the pipe according to claim 2,
The blade member is provided between an arm portion projecting from the outer peripheral surface of the body portion and the arm portion and the blade, and can project and retract the blade according to the shape of the inner surface of the pipe in contact with the blade member. A marine organism removing device in a pipe, characterized by comprising a buffering portion. In the sea life removal apparatus in the pipe according to claim 3,
The apparatus for removing marine life in a pipe, wherein the blade member includes an adjustment unit that adjusts a position in the protruding direction of the blade. In the sea life removal apparatus in the pipe according to any one of claims 2 to 4,
The guide part is provided around the outer periphery of the body part, and includes a plurality of leg members provided with a caster at the tip.
Each of the plurality of leg members is detachable or foldable with respect to the trunk part, and the sea life removing device in the pipe is characterized in that In the sea life removal apparatus in the pipe according to claim 5,
The leg member includes an arm part protruding from the outer peripheral surface of the body part, and the caster provided at the tip of the arm part,
The caster includes a wheel that contacts the inner surface of the pipe, and a holder that rotatably holds the wheel and holds the wheel so that it can protrude and retract according to the inner surface shape of the pipe that contacts the wheel. Sea life removal device in piping characterized by In the marine organism removal apparatus in the piping in any one of Claim 2 thru | or 6,
A plurality of the sea life removal units are provided in the length direction of the body part,
Among the plurality of sea life removal units, the arrangement of the plurality of blade members forming any one sea life removal unit is shifted from the arrangement of the plurality of blade members forming another sea life removal unit. The apparatus for removing marine organisms in a pipe is characterized in that a blade comes into contact with the entire inner circumference of the pipe in the whole of the plurality of marine organism removal units. In the sea life removal apparatus in the pipe according to claim 7,
The sea life removal device in a pipe, wherein the guide portion is provided between two sea life removal portions of the plurality of sea life removal portions. In the sea life removal apparatus in the pipe according to any one of claims 1 to 8,
The apparatus for removing marine organisms in a pipe is characterized in that at least two casters of the guide part are in contact with an inner surface of the pipe below the body part. In the marine organism removal apparatus in the piping in any one of Claims 1 thru | or 9,
The body part is formed of a cylindrical body having both ends opened, and the sea life removing device in the pipe is characterized in that: In the sea life removal apparatus in the pipe according to claim 10,
The body part is provided with a ring-shaped rib that protrudes from the inner surface of the cylindrical body and extends in the inner circumferential direction of the cylindrical body. In the marine organism removal apparatus in the piping in any one of Claims 1 thru | or 11,
The traction part is any of a plurality of string-like members, belt-like members, and chain-like members that are provided at both ends in the sliding direction of the body part and are attached at an equal pitch around the outer periphery of the body part. Sea life removal device in the pipe. In the sea life removal device in the pipe according to any one of claims 1 to 12,
The pipe is provided with a manhole penetrating the inside and outside of the pipe,
The sea life removing device in a pipe, wherein the body portion has a diameter smaller than the diameter of the manhole. In the sea life removal apparatus in the pipe according to any one of claims 1 to 13,
The traction device is a winch that is provided outside the pipe and includes a wire connected to any of a plurality of string-like members, belt-like members, and chain-like members that constitute the traction portion,
An apparatus for removing marine organisms in a pipe, comprising: a wire guide portion that is fixed to the manhole and guides the wire to the outside of the pipe through the manhole. A method for removing marine organisms in a pipe using a marine organism removing apparatus that removes marine organisms attached to the inner surface of the pipe by sliding the inside of the pipe in the sea,
The sea life removal device is:
A body portion having a diameter smaller than the inner diameter of the pipe;
A guide part provided around the outer periphery of the body part, having a caster that contacts the inner surface of the pipe, and guiding the body part in a sliding direction;
A sea life removal unit that is provided around the outer periphery of the body part, has a blade that contacts the inner surface of the pipe, and scrapes off sea life attached to the inner surface of the pipe;
A traction portion provided at an end portion in the sliding direction of the body portion and connected to a traction device provided outside the pipe;
Carrying the marine organism removal device into the pipe;
Driving the traction device and reciprocating the marine organism removal device in the sliding direction inside the pipe to scrape off marine life adhering to the inner surface of the pipe with the blade;
A method for removing marine life in a pipe, comprising: collecting the marine life that has been scraped off and carrying it out of the pipe through the manhole. In the sea life removal method in piping of Claim 15,
The body portion has a diameter smaller than the diameter of the manhole, and has a length that can be rotated inside the pipe,
The guide part and the sea life removing part are configured to be detachable or foldable with respect to the body part,
Between the step of bringing the sea life removal device into the pipe and the step of scraping off the sea life,
After carrying in the body part, aligning the length direction of the body part with the sliding direction of the pipe;
A method for removing marine life in a pipe, comprising: a step of bringing a caster of the guide part and a blade of the sea life removing part into contact with an inner surface of the pipe.

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