KR830002404B1 - Piping reinforcement, repair device - Google Patents

Abstract

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Description

Piping reinforcement, repair device

The figure shows an embodiment of the reinforcement, repair device for the pipe of the present invention,

1 is a longitudinal cross-sectional view of the device of the present invention.

2 is a side view.

3 is a longitudinal sectional view showing a state of use when the device of the present invention is used for reinforcement and repair of an already installed buried pipe.

4 to 6 are enlarged longitudinal cross-sections showing the state of movement in the pipe of the film forming machine, the film adjusting device and the inspection observation device which are the main components of the present invention in relation to the connection portion of the pipe. Degree.

7 is a longitudinal sectional view showing a state when the tube passes through a bend.

8 is a cross-sectional view taken along line (X)-(X) of FIG.

9 is a cross-sectional view taken along line (Y)-(Y) in FIG.

10 to 12 are explanatory diagrams of a receiver depicting the state of the tube, and showing the process of confirming the positional relationship between the film forming machine and the connection portion of the tube.

13 to 15 are explanatory views showing the preliminary work of the work of reinforcing and repairing the buried pipe already installed using the apparatus of the present invention.

13 and 14 are for dropping the scale and the like from the wall of the pipe.

Fig. 15 is a diagram showing the operation of excluding dropped scales.

The present invention is installed on the ground or underground, or installed or newly installed in ships or buildings, such as fuel gas pipes, such as urban gas, propane gas, natural gas, water pipes, sewer pipes, nuclear power generation The present invention relates to a device for reinforcing and repairing pipes for cooling water, petroleum paraffin, and the like.

In various pipes, such as gas pipes and water pipes, if the pipe is cracked or the sealing part of the pipe connection part is poor, the gas or water flowing in the pipe leaks from the pipe, and in the sewer pipe, the groundwater penetrates into the pipe. There is a concern.

Therefore, repair work must be carried out to prevent such leakage.

The present invention relates to a device for forming a coating film on the inner surface of the tube in order to prevent leakage in such repair work, the object of which is to completely and reliably seal the portion of the tube leaking, as well as the inner surface of the tube The present invention provides a device capable of forming a coating film of uniform thickness on the entire surface to completely prevent leakage and attain reinforcement of the pipe.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the figure, (A) is a film forming machine, (1) is a front partition wall, (2) is a rear partition wall, and these front and rear partition walls (1) and (2) are held by a spacer ring 3 to maintain a proper gap therebetween. The connection is secured by the connector 4. The front and rear bulkheads 1 and 2 are elastic materials such as abrasion-resistant rubber or polyethylene, and the tops of the tops of the sleeves 5 and 6 are formed in a shape in which a rounded top is cut and opened. The center discs 7 and 8 formed as hard materials are closed and formed into a substantially dish-like shape. The center discs 7 and 8 have a sleeve attachment piece 9 having a shape that extends around the periphery. And the attachment piece 9 is integrally fixed to the sleeve 5 and 6 by suitable fixing means along the inner surface of the top opening of the sleeve 5 and 6.

The sleeves 5 and 6 are formed with the largest diameter portion of the base opening, the diameter of which is slightly larger than the inner diameter of the pipe to be coated (a). It is.

Although the sleeve 6 of the rear bulkhead 2 is not shown in the drawing, when it passes through the connecting portion 10 of the coated pipe a, the sleeve 6 jumps out due to the disappearance of pressure from the outside and the connecting portion 10 It is preferable to form the prevention portion for preventing the pushing out or chipping off of the coating film forming material (b) filled in the continuum continuously at the edge of the large diameter opening.

This preventive portion is, for example, between the gaps of the connecting portions 10 of the coated pipe a with an angle that is substantially parallel or slightly expanded with respect to the axis of the edge of the opening having the large diameter of the rear partition 2. It is formed by extending the length to be slightly wider than the width of the V-shaped cutout in the base direction from the front end of the rear portion at every appropriate interval in the circumferential direction.

In addition, these front and rear bulkheads 1 and 2 are disposed on the same axis in the same sloping state in the front ridge, with the spacer ring 3 interposed therebetween, as well as the connector 4. Secure the connection as).

The connector 4 has nut screwing portions 4 'and 4 "at both ends, and the portion inserts through the central portion of the center disc 7 and 8 of the front and rear bulkheads 1 and 2, respectively. The nut 11 is screwed outward from the center disc 7 and 8 so that both front and rear partition walls 1 and 2 are tightened to the spacer ring 3 to be sandwiched.

This connector 4 also serves as a film forming material discharge pipe. That is, the connector 4 has a film-forming material discharge conduit 12 formed in the axial direction by opening one end to the middle part thereof, and the opening end inserts the front partition wall 1 into the coating film to be described later. A discharge port 12 that is detachably connected to the supply pipe 23 of the forming material supply device D and is provided radially at the closed end is opened to the peripheral surface of the spacer ring 3.

In addition, the spacer ring 3 is formed of a cylindrical material having a diameter approximately equal to the diameter of the central disks 7 and 8 of the front and rear partition walls 1 and 2.

(B) is composed of a rotation adjusting device (B ₁ ) and a rotation driving device (B ₂ ) for rotating it as a film adjuster, the rotation driving device (B ₂ ) is made from an air motor, motor support Fixed to (13) and the rotary shaft 14 is connected to the shaft shaft 16 of the rotary adjustment port B ₁ via the universal joint 15, and the air inlet pipe 20 is connected to the air inlet. The air inlet pipe 20 is inserted into the central disk 7 and 8 of the film forming machine A so as to extend toward the front of the film forming machine A, and the compressed air supply device E described later. ) And the air hose 24 is detachably contacted, and a valve is installed at the outlet of the air to reduce the rotation speed of the motor.

The motor support 13 is provided with the same disks 17 and 18 that are the same as the central disks 7 and 8 of the film forming machine A at appropriate intervals, and are connected and fixed as a plurality of connections 19. An elastic piece 21 is radially attached around the discs 17 and 18 so that a line connecting the front end of the elastic piece 21 has a diameter slightly larger than the inner diameter of the coating tube a. It is formed to draw, and when it is inserted into the tube (a), the center of the disk (17) (18) is made to maintain the structure in accordance with the center of the tube (a) so that it can be preserved, and the original disk (17) (18) In between, the air motor B ₂ and the rotating shaft 14 are attached to the back disk 18 so that the center of the disk 18 can be inserted.

Rotation adjusting tool (B ₁ ) is a shaft spacing 16 connected to the rotating shaft 14 of the air motor (B ₂ ) via the universal joint (15) and a spatula-shaped member (56a) having elasticity between the shaft (16) (B) consisting of two sets of adjusting pieces (56, 57) radially attached via the (57b), wherein the adjusting pieces (56) (57) have a length from the shaft (16) to the front end. It is slightly longer than the radius of the intestine (a).

Therefore, the rotation adjusting tool B ₁ is rotated by the drive of the air motor B ₂ , and the inner circumferential surface of the coated pipe a is circumferentially as the elastic spatulas 56a and 57a of the adjusting pieces 56 and 57. It slides and makes friction.

The spatula-shaped members 56a and 57a having elastic force are 56a of the lighting piece (hereinafter referred to as the primary adjustment piece) 56 positioned immediately in front of the universal joint 15 of the shaft 16. The thickness of the adjustment piece (hereinafter referred to as the secondary adjustment piece) 57 is gradually thinned by forming the same thickness up to the front end and forming only the front end in an arc-like shape. The thing 57a forms inclined surface one side so that the thickness may gradually decrease from the base to the front end.

Moreover, the spatula-like member 56a holding the elastic force of the primary adjustment piece 56 and the member 57a of the secondary adjustment piece 57 also have substantially the same thickness in the base.

Therefore, the spatula member 57a having the elastic force of the secondary adjustment piece 57 is considerably more flexible than the spatula member 56a having the elastic force of the primary adjustment piece 56.

In other words, the primary adjusting piece 56 has a strong waist and the secondary adjusting piece 57 has a weak waist.

And the film adjuster (B) configured in this way is connected to the rear portion of the film forming machine (A) via the connectable connecting portion 58, the printable connecting portion 58 is alternately applied to the plurality of metal wires alternately. After twisting to the left and twisting again, twisting together to form a bar shape, and nut (59) at one end and bolt (60) at the other end, and the nut (59) of the film forming machine (A) The nut is screwed into the nut fitting portion 4 "of the connector 4 which penetrates through the center of the rear partition 2, and the bolt 60 is the front plate 17 of the motor support 13 of the film adjuster B. It penetrates to the center so that it sticks as a nut 61 at the back of the front disc 17.

In this way, the connected film adjuster (B) and the film forming machine (A) are able to tow the inside of the to-be-coated pipe (a) by the pulling device (F).

In other words, a towing line 25 for wire off and the like is attached to the central disc 7 of the front partition wall 1 of the film forming machine A, and the line 25 is connected to the towing device F.

(C) is an inspection observation apparatus. This inspection observation apparatus (C) uses a television camera in the drawing display example, and is supported by the above-mentioned tow line 25 and the coating film forming material supply pipe 23 to form the film forming apparatus A. It is installed in the proper spaced position in front of the.

That is, the inspection and observation device (C) composed of a television camera is connected to the film forming material supply pipe (23) and the traction cord (25) along the outer circumferential surface of the band (26) to tighten and fix them, the camera angle In other words, the inspection observation direction is directed to the film forming apparatus (A).

In addition, a support angle 27 is provided in the band 26 to be connected and tightened. The support angle 27 causes the television camera C to be coated in the coated tube a. It is held on the same axis as the former (A).

Next, a description will be given of the film forming material supply device D which sends the film forming material to the above-described film forming machine A. FIG.

The coating film forming material (b) is formed from a coating liquid and a curing liquid, and is a two-component synthetic resin that is cured by mixing the two. Foxy is used in Yeakin University. The liquid and curing liquid are separately installed. It is stored in the liquid tank 28.

The liquid tank 28 is always equipped with a stirring device 30 having a stirring blade which rotates by driving the motor 29, and always agitates the paint. The liquid and the curing liquid in the liquid tank 28 are each pumped ( 31 is sent out to the pouring liquid supply pipe 23a and the hardening liquid supply pipe 23b, respectively.

The main liquid and the hardening liquid supply pipes 23a and 23b are flexible hoses, one end of which is mixed with a pulp 31 through a pulp 31 and the other end of which is connected to a mixing tube 32 through a tertiary tube-shaped connection port 32. It is connected to 23c, and this mixing pipe 23c is connected to the film forming material discharge pipe path 4 of the film forming machine A in the other side. Therefore, the coating film forming material supply pipe 23 mentioned above is comprised by the injection liquid, the hardening supply pipe 23a (23b), and the mixing pipe 23c.

The mixing tube 23c is a flexible hose, and although not shown in the drawing, a plurality of wing plates are inclined in the flow direction of the paint at appropriate intervals and attached to a core wire having flexibility therein. A stirring element is accommodated.

The compressed air supply device (E) consists of an air compressor (24) in contact with an air compressor and one end thereof, and the other end of the air hose (24) is in front of the film forming machine (A). It is connected to the air introduction pipe 20 of the adapter B ₂ .

In addition, the coating film forming material supply device (D) and the pressing supply device (E) is mounted on the vehicle 33 to be transported and installed to the site required.

(G) is a receiver, and in the drawing example, a television receiver is used corresponding to the inspection observation device (C), and is mounted on the vehicle 33 on which the film forming material supply device (D) and the like are mounted. The front end of the camera cable 34 is connected to the television camera C via the connector 35.

The paint supply pipe 23, the air hose 24, the camera cable 34 and the traction cord 25 are integrated into one strand as the joining hose 36 at a suitable portion, and the joining hose 36 is The rotating drum 37 is wound around the rotating drum 37, and when the front end of the collecting hose is pulled out, the rotating drum 37 can be rotated to pull out the collecting hose 36 at any time, and the rotating drum 37 can be rolled up when the rotating drum 37 is reversely rotated.

That is, the traction apparatus F is comprised by this.

The traction device F is also mounted on the vehicle 33 together with the coating film forming material supply device D and the compressed air supply device E receiver G.

In order to repair and reinforce the pipes by installing linings on the inner surface of the pipes, for example, the gas pipes installed and buried therein, the scale of the pipes is first removed to clean the inner surface of the pipe using the apparatus of the present invention having such a structure. .

Such descaling is performed by the following process. That is, the gas supply of the construction section is stopped, and the working holes C and C 'are dug at intervals of about 90 m to 150 m in the ground where the gas pipe a is buried. By exposing the gas pipe (a) to the part and cutting off the gas pipe (a) of the exposed part by an appropriate length, for example, about 60 cm, the embedded gas pipe is cut to about 90 m to 150 m in length.

(41)을 설치한 스크레이퍼(42)를 삽입 배치하고, 이것을 원티등의 견인기(43)에 의하여 개스관(a)의 다른편의 절단개구단(a")까지 잡아당겨서 이동시킨후 소거용 손톱(41)으로서 스케일(d)을 긁어서 떨어뜨린후 제14도에 표시한 바와 같이 주면부가 강모(鋼毛)로 이루어지며 지름이 관(a)의 지름과 동일한 지름 혹은 약간 큰지름의 원반형상으로 형성한 솔(44)을 상기한 스크레이퍼(42)와 동일하게 관내로 견인이동시켜서 스케일을 긁어떨어뜨림과 아울러 관내면의 청소를 한다.In addition, as shown in FIG. 13, a plurality of elastic pieces 40 are formed in a radially expanded shape toward the rear of the cutting opening a 'on one side of the gas pipe A cut to the length as described above. Nail for erasing on the front end of the elastic piece 40

The scraper 42 provided with 41 is inserted and placed, and it is pulled by the retractor 43, such as a tee, to the cutting opening end a "of the other side of the gas pipe a, and then removed. 41) After scraping off the scale d, as shown in Fig. 14, the main surface portion is made of bristles, and the diameter is the same as the diameter of the tube (a) or is formed into a disk shape with a slightly larger diameter. The brush 44 is pulled into the tube in the same manner as the scraper 42 to scrape off the scale and to clean the inner surface of the tube.

The scraper 42 and the sole 44 can also be used by connecting a plurality of as shown in the drawing, and the connector 45 which can be rotated so that the scraper 42 or the sole 44 to be connected to each other is rotatable with each other. ) Is connected. In addition, in the pulling and moving of the scraper 42 and the sole 44, as shown in the drawing, the scrapers 42 and the sole 44 are connected to the retractor 43, respectively, while reciprocating back and forth little by little. By moving toward the other opening end a ", the scale etc. of the inner surface of the pipe a can be reliably and effectively scraped off.

Next, the scale d ', which has been scraped off the wall of the pipe by the above operation or dropped by friction and collected in the pipe a, must be removed from the pipe a. Is connected to the blower 47 through the blowing hose 46, and the other cutting opening a 'is connected to the suction device H via the suction hose 48. The blower 47 is blown into the pipe a and suctioned by the suction device H to remove and remove the scale d '.

In addition, it is not necessary to blow air in the pipe a by the blower 46, and although the suction by the suction device H alone can eliminate the scale d 'that is separated from the pipe, the blower 46 is sufficient. When used together, it can be formulated more completely and in a short time.

Such a suction device (H) is configured as a blower 50 and a scale accommodating chamber 51 mounted on the vehicle 49, wherein the suction port 52 of the blower 50 is scaled through a filter 53. It was connected to the storage chamber 51, and the exhaust port 54 was made to open to the atmosphere.

After the tube wall is cleaned by such a process, a coating film is formed on the inner surface of the tube (a) by the apparatus of the present invention.

Hereinafter, the coating film formation of the present invention will be described according to the process. First, the film forming machine (A), the film adjusting device (B) and the television camera (C) are inserted and placed in front of the cutting opening (a ') on one side of the pipe (a), and the collective hose 36 is placed in the pipe (a). Insert in.

Moreover, it is preferable to park in the vehicle 33 equipped with the coating film forming material supply apparatus D etc. on the road near the working hole C 'on the opposite side to the side where the coating film forming machine A etc. were arrange | positioned.

Then, the film forming material supply device (D) is operated so that the injection liquid and the cured liquid, which are the film forming material (b), are formed at the front partition wall (1) and the rear partition wall (2) of the film forming machine (A) via the supply pipe (23). Between the two partition walls 1 and 2, the spacer ring 3, and the inner surface of the tube a, and the rounded space portion 55 formed along the circumferential direction of the inner surface of the tube a. To be filled in the space.

This supplied liquid and hardened | cured liquid are sent to the coating-film-former A in the state which mixed and stirred by the stirring element of the mixing pipe 23c. At the same time, the compressed air supply device E is operated, and the rotation adjusting device B ₁ is driven by driving the rotary drive device of the film regulator B, that is, the air motor B ₂ , with the air hose 24 mounted thereon. Rotate

In this state, the film forming machine (A), the film adjusting device (B), and the inspection observation device (C) are mounted again with the traction device (F) while observing the shape of the pipe projected to the water receiver (G) by the inspection observation device (C). Move it while pulling it into the building.

That is, by rotating the rotating drum 37 and winding the collective hose 36, the film forming machine, the film adjusting device B and the inspection observation device C are drawn to the other end opening a " of the pipe a. .

The film forming material (b) is coated on the inner surface of the tube (a) by the periphery of the elastic sleeve (6) of the rear partition wall (2) of the film forming machine (A) and the film adjusting device (B) according to the pulling and moving process. As a spatula-like member 56a of the primary adjusting piece 56 of the rotation adjusting tool B ₁ of the rotating pot, and is adjusted to a uniform coating film b 'of the secondary adjusting piece 57, The completion is smoothly adjusted as the member 57a.

Therefore, a smooth coating film b 'having a uniform thickness is reliably formed on the inner surface of the tube a.

In other words, the resin pipe is newly formed in the interior of the gas pipe (a) such as old cast iron.

In this way, by moving the film forming machine (A) and the film adjusting device (B) from end to end of the pipe (a), the synthetic resin is coated on the entire surface of the inside of the pipe (a). 10) The part where there is a possibility of leakage of the back gas should sufficiently penetrate and fill the film-forming material (b) in the part.

This operation will be described in detail. In the movement of the film former (A), the portion of the tube (a) connecting part 10 which may be leaked may be the front wall (1) and the rear side wall (1) of the film former (A). 2) When it stops pulling when it is located between 2) and continues to send the film forming material b in this state, the film forming material b enters into the connection part 10, and it fills the part, Seal the part.

At this time, the film adjuster B stops the rotation or drops the rotation speed at an extremely low speed.

This can be done by stopping the supply of air to the air motor B ₃ or by lowering the supply pressure of the air. In addition, the rotation of the rotation adjusting device B ₁ is changed in response to the amount of the coating film forming material b. It is usually rotated at 100-300r.pm.

Positioning of the above-mentioned connection part 10 or a part which has a possibility of leakage, such as a crack, is performed by the inspection observation apparatus (c), The case where the inspection observation apparatus C which performs this operation is a television is explained A part where there is a fear of leakage coming out of the television receiver G like a tile. For example, when the connection part 10 is hidden in the shade of the front partition wall 1 of the film forming machine A and becomes invisible, It enters into the space 55.

Therefore, the pulling at this position may be stopped once, and after sufficient penetration of the coating film forming material b into the connecting portion 10 or the like, the pulling movement is started again.

At the same time, the pulling speed is resumed, and the rotational speed of the rotation adjusting knob B ₁ of the film adjuster B is restored as usual.

In this way, after the film forming machine (A) and the film adjusting device (B) are moved from the ends of the cut pipe (a) to the end, the dried cut of the coating film (a) is connected and the work hole (C) ( When C ') is repaired, the job is finished.

At this time, there is a bent portion in the middle of the cut pipe (a), and when the bent portion passes through the film former (A) and the film adjuster (B), the flexible connection between the film former (A) and the film adjuster (B) is connected. And the universal joint 15 contacting the rotary drive device B ₂ and the rotary adjusting device B ₁ of the film adjuster B is bent in accordance with the bending of the pipe a, thereby forming the film forming machine A and the film adjuster ( B) can smoothly bend the bend. As described above, the coating film forming material (b) is not limited to a two-component synthetic resin, but may be a one-component paint, and in the case of a sewer pipe or the like, cement mortar and a metal binder may be used. good.

In the embodiment of the drawing, the rotary drive device B ₂ provided in the film regulator B is an air motor. However, a drive source other than air, for example, a motor driven by electricity may be used.

As the inspection observation device C, it is also possible to use a device using an optical fiber in addition to the television displayed above.

In addition, the difference in the strength of the waist portion of the primary adjustment piece 56 and the secondary adjustment piece 57 of the rotation adjustment tool (B ₁ ) is the difference in the thickness of the spatula-like member 57a as in the above-described embodiment. In addition to being realized by placing the material, it is also possible to realize a change in the material of the spatula members 56a and 57a having elastic force as the primary top piece 56 and the secondary adjustment piece 57.

Since the present invention is constructed as described above, it is possible to reinforce and repair by covering the connection part of the pipe or the part which may be leaked, such as cracks, from the inner surface, so that leakage can be prevented and the pressure-tightening and inner surface of the pipe can be prevented. Can reduce the frictional resistance.

In addition, the film forming machine is stopped at a connection part or a part where there is a risk of leakage such as a crack. By supplying the film forming material therein, it is possible to sufficiently infiltrate and charge the film forming material to the inside of the connection part or crack of the pipe. Therefore, the part can be completely firmly sealed, and the leakage preventing effect can be further ensured.

In addition, since the film forming material remaining after forming the film as a film forming machine or a partially thick portion can be taken and applied to the upper wall of the tube as a film adjusting device, the thickness of the film is uniform to a certain thickness. In addition, it is possible to form a smooth coating film. In addition, the film adjusting device is connected to the film forming machine and pulled at the same time, so that the inner surface of the pipe is preliminarily coated and the finished coating is finished twice. The work can be done easily, and the film forming machine, the film adjusting device, and the rotating control device and the rotating adjusting device of the film adjusting device are flexibly connected so that they can be bent freely in the part and the coated pipe is bent. Can be passed while bending along the Edo pipe Because of this, the inner lining of the embedded pipe such as a gas pipe with many bends can be extremely effective anyway.

In addition, it is possible to work while confirming the condition of the inside of the pipe including the film forming machine or the part that may be leaked with the inspection observation device, so that the stop position of the film forming machine can be precisely controlled, so that it is easy to work, and it is surely grasped Take the necessary steps depending on the situation.

Therefore, the intended purpose can be achieved.

Claims (1)

A traction apparatus (F) connected to the film forming apparatus (A) and the film adjusting device (B) and the film forming apparatus, each of which is installed to be connected at an appropriate interval to each other, and a traction apparatus (F) for traction movement of the above-described film forming apparatus in the pipe (a). And an inspection observation device disposed at the front of the moving direction of the film former as described above toward the film former, and connected to the above-mentioned traction device and moving at the same time while maintaining a constant distance with the film former. C) and a receiver G which is in contact with the inspection and observation device, and a film forming material supply device D which is in contact with the film forming machine and supplies the film forming material therein, wherein the film forming apparatus is spaced back and forth at suitable intervals. Rounded shape along the inner circumference of the tube when it is inserted into the tube with the front and rear partitions (1) and (2) projecting in the circumferential direction installed Also the space portion 55 blocks forming the well formation to be introduced into the film-forming material in the space portion, and the coating film regulator rotary drive device (B ₂₎ and a spatula-shaped or a brush-shaped jojeonggu rotated by this (B ₁ ) and the reinforcement, repair device for the pipe, characterized in that connected to be able to bend or bend to the film forming machine.

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