JP2001054771A - Underwater cleaning device for pipe line inside - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clean a water intake pipe line under water, from which sea water is originally impossible to be taken out. SOLUTION: This cleaning device is provided with a device main body 2 floating from a water intake pipe line bottom wall 1bw by the buoyancy of a buoyancy generating body 3 in the water introduced into the water intake pipe line 1 and movable in the water intake pipe line using a pipe line inside wall except the water intake pipe line bottom wall as its running passage, a moving and driving means consisting of a tracting winch 11 and a load winch 12, a pair of nozzle supporting arms 4a and 4b provided in the radius direction freely rotatably around the axis center 2AX of the device main body, a cavitation generation type submerged jetting nozzles connected, to each tip of the nozzle supporting arms 4a and 4b to point to the pipe line inside wall surface, high pressure water supply and sending means 15, 16, 17 and 18 for supplying and sending high pressure water to the cavitation generation type submerged jetting nozzles and rotation driving nozzles for the nozzle supporting arms 4a and 4b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater cleaning device for a pipeline, and more particularly, to an underwater cleaning device for a pipeline capable of underwater cleaning of an intake channel tube having a structure in which seawater or the like cannot be extracted.

[0002]

2. Description of the Related Art A conventional intake pipe cleaning machine is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-281232.
This intake channel pipe washing machine includes a pair of front wheels in which a traveling means of a truck lands on an inner peripheral surface of the intake channel pipe and is linked to a first air motor via a power transmission device. A second air motor that includes a pair of rear wheels that land on a surface, and that is linked to steering means via a link mechanism, and that has a rotary shaft of a first nozzle that is pivotally supported at the front of the bogie via power transmission means. And three second nozzles for injecting high-pressure water downward from near the center in the height direction of the inner peripheral surface of the water intake pipe to one side of the bogie so as to be capable of changing the injection angle, The injection ports of the first and second nozzles are connected to a ground high-pressure water supply outside the water channel, and the first and second air motors are connected to a ground air supply outside the water channel.

[0003]

The above-mentioned intake pipe cleaning machine has the following problems. That is, it is necessary to stop water intake from the intake pipe, drain the water from the intake pipe, and in an atmospheric environment, a worker rides on a bogie in the pipe and directly operates to wash the intake pipe. In addition, it took time to drain the intake pipe, and it was impossible to clean the intake pipe with a structure that was originally impossible to extract seawater.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and provides an underwater cleaning device in a pipe which is capable of underwater cleaning of a water intake pipe originally having a structure in which seawater or the like cannot be extracted. As an issue.

[0005]

According to a first aspect of the present invention, there is provided an apparatus for cleaning underwater in a pipeline, wherein the buoyancy of a buoyancy generator is measured in water introduced into the pipeline. An apparatus main body that is levitated from the bottom wall of the intake pipe and is movable in the pipeline using the inner wall surface of the pipe excluding the bottom wall of the intake pipe as a travel path, a movement driving means for the main body of the apparatus, and a shaft of the main body of the apparatus. At least a pair of nozzle support arms provided in a radial direction rotatably about a center, and a cavitation-generating submerged jet jet connected to the tip of each of the nozzle support arms so as to face the inner wall surface of the pipeline. A nozzle, high-pressure water supply / water supply means for supplying / water supply of high-pressure water to the cavitation generation type submerged jet injection nozzle, and rotation driving means for rotating and driving the nozzle support arm. Things.

[0006] With the above construction, the main body of the apparatus is operated in a state of being floated from the bottom wall of the intake pipe, and the inner surface of the pipe except the bottom wall of the intake pipe, for example, the inner wall near the top of the intake pipe or the intake pipe. By using the side inner wall of the pipe as a traveling path, it is possible to prevent the sediment that separates from the inner wall of the intake pipe and crushes the sediment deposited on the bottom wall of the intake pipe. Damage to the inner wall can be reduced.

Here, the buoyancy generator may be a material having a specific gravity smaller than that of the liquid in the pipe, for example, a material such as styrene foam covered with a thin steel plate or the like. Container may be used.

Further, since a cavitation-generating type submerged jet jet nozzle is used as a means for peeling off extraneous matter such as wisteria pots and purple shells on the inner wall of the pipeline, the jet jet can be attached to the inner wall of the pipeline such as wisteria pots. As a result, a large impact force can be obtained, and the attached matter can be easily peeled off. In addition, the attached matter can be peeled off without contact, so that the inner wall of the pipeline is not damaged.

[0009] In the underwater cleaning device in a pipeline according to the present invention, it is preferable that the buoyancy generator includes a balance adjusting means for adjusting a balance in a moving direction of the device main body.

With the above-described structure, the axis of the apparatus main body does not incline or intersect with the axis of the intake pipe.
It is possible to make the axis of the device main body coincide with the axis of the intake channel pipe, which makes it possible to smoothly travel in the pipe of the device main body, and that the jet of the cavitation generating type submerged jet nozzle is uniform. Since the inner wall of the pipe collides with the inner wall of the pipe, the adhering matter on the inner wall of the pipe can be uniformly peeled and cleaned.

In order to solve the above-mentioned problem, in the apparatus for cleaning water in a pipe according to the present invention, as a second means, a rotary driving means for rotating the nozzle support arm is provided for supplying water to the cavitation generating nozzle. Preferably, the nozzle is configured to inject a part of the high-pressure water to be sprayed.

According to the above construction, separate driving means such as an air motor or a hydraulic motor, and a hose or a water intake pipe for supplying compressed air or pressurized liquid for driving the driving means are used as the rotary driving means. This eliminates the necessity, thereby simplifying the structure of the apparatus main body, reducing the weight, and omitting or reducing the capacity of the apparatus for generating and supplying compressed air, pressurized liquid, and the like.

In order to solve the above-mentioned problem, in the underwater cleaning device in a pipe according to the present invention, as a third means, a plurality of buoyancy generators are provided in the moving direction of the device main body. A top traveling wheel that is arranged so that the distance from the axis of the main body to the outermost periphery thereof corresponds to the radius position of the inner wall of the intake pipe, contacts the inner wall near the top of the intake pipe, and guides the apparatus main body; A plurality of pairs of guide wheel support arms provided at positions intersecting the movement direction of the central shaft body of the apparatus main body and provided so as to be able to expand and contract in the radial direction; and the water intake passage supported at the tip of the guide wheel support arm. It is preferable that the apparatus further comprises a guide wheel that rolls while contacting the outer periphery with the inner wall surface of the pipe except for the bottom wall, and guides the apparatus body.

According to the above construction, (1) the guide wheel support arm is contracted, so that the device can be easily moved in and out of the pipeline. (2) The guide wheel support arm is extended in the pipeline, and the outer circumference of the guide wheel is brought into contact with the inner wall of the pipeline except for the bottom wall of the intake channel tube, so that the axis of the apparatus body and the center of the intake channel tube are formed. Alignment with the shaft (centering) is automatically and reliably performed, and the axis of the device main body does not incline or intersect with the axis of the intake pipe, and the device main body runs smoothly in the pipeline. In addition, since the jet of the cavitation generating type submerged jet spray nozzle uniformly collides with the inner wall of the conduit, it is possible to uniformly remove and clean the adhered substance on the inner wall of the conduit.

In the in-pipe underwater cleaning device of the present invention, in order to solve the above-mentioned problem, as a fourth means, a moving drive means of the apparatus main body is provided with a winch for pulling the apparatus main body in a forward direction. And a load winch for braking the forward movement of the apparatus body.

With the above construction, a winch motor or a speed reducer as a moving drive means of the apparatus main body can be installed on the ground outside the pipe of the waterway, and the winch is pulled in the forward direction. Since the load winch for braking the forward movement of the apparatus main body is provided, the rope for forward traction and braking is always tensioned, so that the apparatus main body can be stably advanced at a predetermined speed, and the inner wall of the pipeline is provided. Can be uniformly and uniformly removed and cleaned.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view of an apparatus main body according to an embodiment of the present invention, FIG. 2 is a front view taken along the line AA of FIG. 1, and FIG. 3 is a side view showing the overall apparatus configuration and its arrangement.

(Principal Configuration of the Embodiment) As shown in the drawing, an embodiment of the in-pipe underwater cleaning device of the present invention is a method of cleaning a buoyancy generator 3 in water introduced into an intake pipe 1. The apparatus body 2 which is levitated from the bottom wall 1bw of the intake channel by buoyancy and is movable in the intake channel pipe 1 with the inner wall of the pipe except the bottom wall 1bw of the intake channel, that is, the side wall 1sw, the top wall 1tw and the like as a running path. A movement driving means for the apparatus main body 2, comprising: a pulling winch 11 for pulling the apparatus main body 2 in the forward direction; and a load winch 12 for braking the forward movement of the apparatus main body 2; A pair of nozzle support arms 4a and 4b provided in the radial direction to be rotatable about 2AX
To the cavitation generating type submerged jet nozzles 5 and 5 connected to the respective tip ends of the nozzle supporting arms 4a and 4b so as to point toward the inner wall surface of the conduit, and to the cavitation generating type submerged jet nozzle. High-pressure water supply / water supply means 1 which will be described in detail later.
5, 16, 17, 18 and the nozzle support arm 4a,
4b, in a direction perpendicular to the axis 2AX of the apparatus main body 2 and in a direction substantially perpendicular to the support arms 4a, 4b, to the cavitation generating type submerged jet nozzles 5, 5. The nozzle support arms 4a, 4
b. Nozzle support arm 4 consisting of rotary drive nozzles 7, 7 for injecting a part of high pressure water fed through the interior of b.
a, 4b of the rotation driving means.

In the embodiment of the present invention, the buoyancy generator 3 is further provided with left and right side walls 3l, which will be described in detail later.
The balance adjusting means 8l and 8r are attached to the side walls w and 3rw, respectively, and adjust the balance in the moving direction of the apparatus main body.

In the embodiment of the present invention, a plurality of buoyancy generators 3 are provided in the moving direction of the apparatus main body 2,
The apparatus main body 2 is arranged so that the distance from the axis 2AX to the outermost periphery thereof corresponds to the radius of the inner wall of the intake pipe 1 and guides the apparatus main body 2 in contact with the inner wall 1tw near the top of the intake pipe. , And guide wheel support arms 9, 9 provided at positions intersecting with the moving direction of the central shaft 2ax of the device main body 2 and provided so as to be able to expand and contract in the radial direction. , ..., air dampers 9d, 9d, ... as expansion and contraction means of the guide wheel support arm, and the bottom wall of the intake channel pipe supported at the tip of each of the guide wheel support arms 9, 9, ... 1sw inner wall of pipe excluding 1bw
And guide wheels 10, 10,... That roll while contacting the outer circumference of the device and guide the apparatus main body.

(Specific Configuration of the Embodiment) The above embodiment further has the following specific configuration. The buoyancy generator 3 covers a float 3f made of foamed polystyrene with a cover 3c made of a thin steel plate, and covers the bottom surface of the cover 3c at two positions before and after the moving direction of the axial core tube 2ax of the apparatus main body 2. It is supported and fixed to the upper part via support arms 3sa, 3sa.

The tow winch 11 is installed at the upper end of a manhole 13f in front of the direction of movement of the apparatus main body 2 of the water intake pipe 1 (arrow A in FIG. 3), and a wire rope wound around the tow winch 11 is provided. 11wr descends in the manhole 13f, is wrapped around a fixed pulley 14f disposed in the intake pipe 1 below the manhole 13f via a support bracket 14fb, and one end is connected to the front end of the apparatus main body 2. ing.

The load winch 12 is installed at the upper end of a manhole 13b behind the intake pipe 1 in the moving direction of the apparatus main body 2 (arrow A in FIG. 3), and a wire rope wound around the load winch 12 is provided. 12wr descends in the manhole 13b and is wrapped around a fixed pulley 14b disposed in the intake channel pipe 1 below the manhole 13b via a support bracket 14bb, and one end is connected to the rear end of the apparatus main body 2. Have been.

The nozzle support arms 4a and 4b are rotatably attached to the front end of the axial core tube 2ax of the apparatus main body 2 via a rotary joint 4rj.

The cavitation generating type submerged jet nozzle 5 will not be described in detail, but is disclosed in Japanese Patent Application Laid-Open No. Sho 60-168554 filed by the present applicant, or preferably disclosed in Japanese Patent Application No. 11-65075. It is better to use those suggested in the issue.

The high-pressure water supply / water supply means 6 is configured as follows. That is, for example, a high-pressure water supply pump 15 loaded on a ground transportation vehicle 15c, one end of which is connected to the high-pressure water supply pump 15, and the other end of which is connected to the manhole 13b.
And a high-pressure water supply hose 16 connected to an electric hose reel 17 installed in the vicinity of the ground, and wound around the electric hose reel 17 so as to be freely wound up and out, and the extended portion descends in the manhole 13b. , This manhole 13
a hose 18 which is wrapped around a fixed pulley 19 disposed in the intake channel pipe 1 below the intake pipe 1 via a support bracket 14bb, and one end of which is connected to the rear end of the axial pipe 2ax of the apparatus main body 2.
And is provided. The axial core 2ax also serves as a water supply pipe, and the high-pressure water supplied from the hose 18 connected to the rear end flows forward in the axial core 2ax, and flows from the rotary joint 14rj at the front end to the tubular body. Into the interior of each of a pair of nozzle support arms 4a, 4b consisting of: a part from each of the rotary drive nozzles 7, 7; From each of the pipes.

The balance adjusting means 8 of the buoyancy generator 3
1 and 8r extend outwardly of the left and right side walls 3lw and 3rw of the cover 3c made of a thin steel plate of the buoyancy generator 3 and extend in the moving direction of the apparatus main body 2 and have both ends rotatably at both ends via bearings 8b and 8b. A screw rod 8sr having a supported portion, a nut 8n screwed to the screw rod 8sr, a weight 8wt fixed to the nut 8n, and a handle 8h attached to one end of the screw rod. .

(Operation / Effect of Embodiment) The embodiment of the present invention configured as described above has the following operation / effect. (1) The apparatus main body 2 is operated while floating from the bottom wall 1 bw of the intake pipe 1, and the inner surface of the intake pipe 1 except the bottom 1 bw of the intake pipe 1, for example, the inner wall near the top of the intake pipe 1. 1t
By using the w and the side wall 1sw of the intake pipe as the traveling path, it is possible to prevent the sediment that separates from the inner wall of the intake pipe 1 and crushes on the bottom wall. Damage to the inner wall of the tube 1 can be reduced. In addition, the vehicle can travel without being affected by the deposited exfoliated matter and removed matter.

(2) The cavitation generating type submerged jet jet nozzle 5 is used as a means for peeling off the deposits 20 such as wisteria pots and purple shells on the inner wall of the intake channel pipe 1. A large impact force is obtained by colliding with a deposit 20 such as a wisteria pot or a purple shellfish on the inner wall of the inner wall, and not only can the deposit 20 be easily peeled off but also the contact substance 20 can be peeled off without contact. There is no damage to the inner wall.

(3) The axis 2AX of the apparatus main body does not incline or intersect with the axis of the intake pipe, and the axis 2AX of the apparatus main body 2 and the axis of the intake pipe can be matched. Therefore, the traveling of the apparatus main body 2 in the pipe can be made smooth, and the jet of the cavitation generating type submerged jet spray nozzle 5 uniformly collides with the inner wall of the water intake pipe 1, so that the inner wall of the pipe is attached. The kimono 20 can be uniformly peeled and cleaned without unevenness.

(4) As driving means for rotating the nozzle support arms 4a and 4b, separate driving means such as an air motor and a hydraulic motor, and hoses and pipes for supplying compressed air or pressurized liquid for driving the driving means. Therefore, the structure of the apparatus main body 2 can be simplified and reduced in weight, and a device for generating and supplying compressed air or pressurized liquid can be omitted or the capacity can be reduced.

(5) The air damper 9d as a means for expanding and contracting the guide wheel support arm 9 is contracted so that the apparatus main body 2 can be easily taken in and out of the water intake pipe 1. (6) An air damper 9d as a means for expanding and contracting the guide wheel support arm 9 is extended in the water intake pipe 1 so that the pipe bottom wall 1 is extended.
By bringing the outer circumference of the guide wheel 10 into contact with the inner wall surface of the pipe except for the bw, the alignment (centering) between the axis 2AX of the apparatus main body 2 and the central axis of the water intake pipe is automatically and reliably performed. Does not incline or intersect with the axis of the intake pipe, the running of the apparatus in the pipe can be smooth, and the jet of the cavitation generating type submerged jet nozzle 5 can be used. Uniformly collides with the inner wall of the pipe, so that the adhered substance 20 on the inner wall of the pipe is uniformly peeled and cleaned.
It can be performed uniformly.

(7) A winch motor or a speed reducer as a moving drive means of the apparatus main body can be installed on the ground GL outside the pipe of the waterway, and a towing winch 11 for towing in the forward direction, and the apparatus main body Since the load winch 12 for braking the forward movement is provided, it is possible to constantly tension the wire ropes 11wr and 12wr for forward pulling and braking, and to stably advance the apparatus body 2 at a predetermined speed. In addition, peeling and cleaning of the deposit 20 on the inner wall of the pipe can be performed uniformly and evenly.

(Construction Flow) Next, using the embodiment of the present invention configured as described above, a procedure of a method for peeling and cleaning the deposits such as wisteria pots and purple shells in the intake pipe 1. Will be described below with reference to the accompanying drawings. FIG. 4 shows a procedure (construction flow) of a method for removing and cleaning extraneous matters such as wisteria pots and purple shells in the intake channel pipe 1 using the embodiment of the present invention.

(1) Removal of the manhole cover: The covers of the manholes 13f and 13b at both ends of the shell to be removed are removed. (2) Initial section, shell removal of flexible tube section: The assembly part of the apparatus for loading and assembling the apparatus in the initial stage, and the flexible tube passing member mounting part of the flexible tube part of the water intake pipe 1 are diverted. Remove shellfish in advance by keren work. (3) Loading / Assembling of Flexible Tube Passing Member: The flexible tube passing member is carried in from a manhole, and is assembled / attached to a predetermined attachment site from which shells have been removed. Air is supplied from a compressor or an air tank to the attached flexible tube passing member, and is held on the inner surface of the upper portion of the flexible tube by buoyancy.

(4) Carrying the buoyancy generator, the main body of the apparatus and the rotary nozzle into the pipeline: Carry it separately from the manhole 13b. (5) Assembling the buoyancy generator, device body and rotary nozzle in water: Assembling work by diver. Handle 8
h to rotate the screw rod 8sr to rotate the nut 8
n, adjust the position of 8 wt.
Is balanced with the axis of the intake pipe 1.
Compressed air is supplied from a compressor or an air tank to the air dampers 9d, 9d, and air (pressure 4 kgf / mm
² ) Enclose.

(6) Attaching the fixed pulley: The support bracket 14fb holding the towing side fixed pulley 14f is attached to the bottom flange 13ff of the towing side manhole 13f, and the supporting bracket 14bb holding the load side fixed pulleys 14b and 19 is attached to the load side manhole. Each is attached and fixed to the bottom flange 13bf of 13b with a bolt. (7) Installation of winch and electric hose reel: winch 1
Wire ropes 11wr and 12wr and a high-pressure water supply hose 18 are wound around the hose reels 1 and 12, respectively. A winch with a base (with an opening for diver access) covering the entire manholes 13f and 13b is installed, and the hose reel 17 is connected to the load-side winch 12.
Set up near. (8) Electricity supply to winch and hose reel: winches 11 and 12 and hose reel 1 from engine generator EG
7 is supplied with electricity. (9) Arrangement and connection of the high-pressure water supply hose and the wire rope: The diver pulls in the tow wire rope 11wr from the manhole 13f in the forward direction of the apparatus body 2 (arrow A) and connects it to the front end of the apparatus body 2. The diver pulls in the load wire rope 12wr and the high-pressure water supply hose 18 from the manhole 13b on the opposite side, and connects them to the rear end of the apparatus main body 2 respectively. (10) Installation of high-pressure water supply pump and connection of hose to hose reel: Pump specification example: 270 kgf / mm ² × 257 l / mi
n (220ps) industrial water use, tank capacity 5.3m
³ Connect the high-pressure water supply hose 16 to the high-pressure water pump 15 and the electric hose reel 17.

(11) Preparation for operation (operation of each device): (a) Operation of high-pressure water supply pump 15, but running-in for several minutes without pressure (drain) (b) Clutch "disengage" (free) of hose reel 17 (C) Torque keeper setting of the load winch 12 (d) Torque guard setting of the tow winch 11 (e) Travel speed of the device body (winding speed of the tow winch)

(12) Start of cleaning (work): (a) Pressurization of high-pressure water supply pump 15 (b) Operation of traction winch 11 (running of apparatus main body 2) (c) Start of cleaning, nozzle position is attached to winch (13) Water supply work (industrial water, water supply vehicle): Water is supplied from the operation water supply vehicle for a predetermined time according to the tank capacity of the high-pressure water supply pump. (14) Measures at the time of overloading / tripping of the towing winch: Visually observe, and at the time of tripping, stop the towing winch 11 and lower the pressure of the high-pressure water supply pump. Investigate the cause of the diver and eliminate it. After eliminating the cause, the process returns to (12).

(15) End of washing (1 span): The towing winch 11 is stopped at the end position by visual observation of a counter attached to the towing winch 11, and the high-pressure water supply pump 15 is lowered and stopped. (16) Move to the next span → (1): Each wire rope 11wr, 12wr and high pressure water supply hose 16, 1
8 is removed from the apparatus main body 2 and wound up. The same operation is repeated from (1) to (1), but the operations (4) and (5) are unnecessary because the apparatus main body 2 and the rotary nozzle are assembled in the intake pipe 1. The apparatus main body and the rotary nozzle release the pressure in the air dampers 9d, 9d, and the diver moves to the next span.

(17) End of cleaning work: Each wire rope 11wr, 12wr and high pressure water supply hose 16, 18
Is removed from the apparatus body 2 and wound up. The apparatus main body 2 and the rotary nozzle are separated and disassembled in the same manner as at the time of carrying in while performing air bleeding and the like. The fixed pulleys 14f, 14b, 19 and their support brackets 14fb, 14bb are removed. The above components are carried out from the manholes 13f and 13b, and a manhole cover is attached.

While one embodiment of the present invention has been described above, it is to be understood that the present invention is not limited to the above-described embodiment, and includes other embodiments without departing from the spirit of the configuration. Don't wait. For example, in the above-described embodiment, the buoyancy generator 3 is used in which the styrofoam 3f is covered with the cover 3c made of a thin steel plate. Make up,
By adjusting the air pressure to be filled in each chamber, a configuration in which tilting in the front and rear directions can be prevented and the balance of the apparatus can be adjusted may be employed.

[0043]

The present invention has the following excellent effects. (1) According to the first aspect of the present invention, the apparatus is operated in a state in which the apparatus body floats from the bottom wall of the intake pipe, and the inner surface of the pipe excluding the bottom wall of the intake pipe, for example, the inner wall near the top of the intake pipe. By using the inner wall of the intake pipe and the inner wall of the intake pipe as a running path, the sediment deposited on the bottom wall of the intake pipe will not be crushed,
For example, it is possible to reduce damage to the inner wall of the intake pipe formed of a painted steel pipe or the like. In addition, a cavitation-producing submerged jet jet nozzle is used as a means to peel off deposits such as wisteria pots and purple shells on the inner wall of the pipeline. Not only can a large impact force be obtained and the attached matter can be easily peeled off, but also the attached matter can be peeled off in a non-contact manner, so that the inner wall of the pipeline is not damaged. In addition, by providing the buoyancy generator with the balance adjusting means, the axis of the apparatus main body does not incline or intersect with the axis of the intake pipe, and the axis of the apparatus main body and the axis of the intake pipe are aligned. It is possible to make them coincide with each other, which makes it possible to smoothly travel in the pipeline of the apparatus main body, and because the jet of the cavitation generating type submerged jet nozzle uniformly collides with the inner wall of the pipeline, Adhesives can be removed and cleaned uniformly without unevenness.

(2) According to the second aspect of the present invention, a separate driving means such as an air motor or a hydraulic motor is used as the rotary driving means, and a driving means for supplying compressed air or pressurized liquid for driving the driving means. It does not require a hose or a water intake pipe, so that the structure of the apparatus main body can be simplified and reduced in weight, and a device for generating and supplying compressed air, a pressurized liquid, or the like can be omitted or the capacity can be reduced.

(3) According to the third aspect of the present invention, the guide wheel support arm is contracted, so that the apparatus main body can be easily taken in and out of the pipeline. Further, by extending the guide wheel support arm in the pipe and bringing the outer circumference of the guide wheel into contact with the inner wall of the pipe except for the bottom wall of the water intake pipe, the axis of the apparatus main body and the central axis of the water intake pipe are formed. (Centering)
Automatically and reliably, the axis of the apparatus body does not incline or intersect with the axis of the intake pipe, the running in the pipe of the apparatus body can be smooth, Since the jet of the cavitation generating type submerged jet spray nozzle uniformly collides with the inner wall of the conduit, the adhered substance can be uniformly removed and removed from the inner wall of the conduit.

(4) According to the fourth aspect of the present invention, a winch motor or a speed reducer as a moving drive means of the apparatus main body can be installed on the ground outside the pipe of the waterway, and can be moved in the forward direction. Since the towing winch for towing and the load winch for braking the forward movement of the apparatus main body are provided, the rope for forward towing and braking is always tensioned to stably advance the apparatus main body at a predetermined speed. It is possible to uniformly and uniformly remove and clean the adhered matter on the inner wall of the pipeline.

[Brief description of the drawings]

FIG. 1 is a side view of an apparatus main body according to an embodiment of the present invention.

FIG. 2 is a front view taken along the line AA of FIG.

FIG. 3 is a side view showing the entire apparatus configuration and its arrangement.

FIG. 4 is a construction flow chart of a cleaning operation in an intake pipe using the underwater cleaning apparatus in a pipe according to the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Intake channel pipe 1bw Bottom wall 1sw Side wall 1tw Top wall 2 Main unit 2AX Shaft 2ax Shaft core 3 Buoyancy generator 3f Styrofoam 3c Thin steel cover 3sa Support arm 4a, 4b Nozzle support arm 5 Cavitation generating liquid Jet injection nozzle 7 Rotation drive nozzle 8 Top running wheel 8l, 8r Balance adjusting means 8b Bearing 8sr Screw rod 8n Nut 8wt Weight 8h Handle 9 Guide wheel support arm 10 Guide wheel 11 Towing winch 12 Load winch 13f, 13b Manhole 13ff, 13bf Bottom Flange 14f, 14b Fixed pulley 14fb, 14bb Support bracket 15 High pressure water supply pump 16, 18 Water supply hose 17 Electric hose reel 19 Fixed pulley EG engine generator

Claims (4)

[Claims] In the water introduced into the pipe, the buoyancy of the buoyancy generator causes the buoyancy to float from the bottom wall of the intake pipe. A movable apparatus main body, a movement driving means of the apparatus main body, at least a pair of nozzle support arms provided in a radial direction so as to be rotatable around an axis of the apparatus main body, and a tip of each of the nozzle support arms A cavitation generating type submerged jet injection nozzle connected to the pipe inner wall surface, and a high pressure water supply / water supply means for supplying / supplying high pressure water to the cavitation generating type submerged jet injection nozzle; Rotation driving means for rotationally driving the nozzle support arm,
An underwater cleaning device in a pipeline comprising: 2. A rotation driving means for rotating and driving the nozzle support arm is disposed in the middle of the nozzle support arm, and is substantially orthogonal to the support arm in a plane orthogonal to the axis of the apparatus main body. 2. The underwater cleaning device according to claim 1, wherein the nozzle is a nozzle that injects a part of the high-pressure water sent to the cavitation generation type nozzle in a direction. 3. A top traveling wheel which is provided in a plurality of directions of the buoyancy generator in the moving direction of the device main body and contacts the inner wall near the top of the intake pipe to guide the front device main body, and a center shaft of the device main body. A plurality of pairs of guide wheel support arms provided at positions intersecting with the moving direction and provided so as to be extendable and contractible in the radial direction; and a pipe inner wall surface supported by the distal end of the guide wheel support arm and excluding the intake channel pipe bottom wall The underwater cleaning device according to claim 1 or 2, further comprising: a guide wheel that rolls while contacting an outer periphery of the device and guides the device main body. 4. The apparatus according to claim 1, wherein the moving drive means of the apparatus main body includes a winch for pulling the apparatus main body in the forward direction, and a load winch for braking the forward movement of the apparatus main body. 2. The apparatus for cleaning underwater in a pipe according to claim 1.