KR20100023108A - Epoxy lining apparatus for an pipe - Google Patents

Abstract

PURPOSE: An epoxy lining device for a steel pipe of large sized waterworks is provided to proceed a lining operation regardless of a diameter length of the steel pipe by controlling a tilt angle of the nozzle arm supporting the injection nozzle. CONSTITUTION: An epoxy lining device for a steel pipe of large sized waterworks includes a center joint(32). The center joint comprises: a shaft which rotates a nozzle arm(36) supporting an injection nozzle(46); a rotator which is rotatably mounted on a vertical end of the shaft and in which a plurality of water paths are formed in inner part and a plurality of circumferential grooves are formed on the external diameter; and a fixture which is inserted outside of the rotator and in which a plurality of ports is formed on the circumference.

Description

Epoxy lining apparatus for an old pipe

The present invention relates to an epoxy lining apparatus for water-treated old steel pipes, and more particularly, is suitable for the lining treatment of large steel pipes having a diameter size of 1,200 mm or more, and the inclination angle of the nozzle arm supporting the spray nozzle according to the diameter size of the steel pipes. In particular, it relates to an epoxy lining device of a large-scale tap water pipe with a center joint, in which a connection hose and an air connection hose connected to the injection nozzle using a center joint and a heating heating wire are not twisted together. .

In general, the pipes of water supply and sewerage generate scales due to corrosion etc. in the inner diameter of the pipes as the years of buried water flow.If these scales are not removed in time, water flow rate as well as water leakage due to pipe breakage and It causes various problems such as water quality deterioration. To solve this problem, the rehabilitation method of aged water pipes is carried out at regular intervals.

Examples of the water pipe rehabilitation method include a customs method, a cleaning method, and a lining method.

The customs method removes the scale attached to the inner diameter of the steel pipe. The cleaning method removes the aged coating layer coated on the inner diameter of the descaled steel pipe through the customs method. Finally, the lining method After the cleaning method is completed, it refers to a method of lining the coating layer on the inner diameter of the descaled steel pipe.

Meanwhile, the lining method refers to a method of forming a coating layer on the inner diameter of the steel pipe from which the scale is removed after the cleaning method is completed.

As a material of the coating layer used in the lining method, ceramic mortar is mainly used. The ceramic mortar is a mixture of the ceramic mortar powder and the liquid admixture to form a gel dough, the ceramic mortar powder is an improved strength and short curing time and antibacterial function compared to the general cement mortar powder . However, ceramic mortar has a disadvantage in that unnecessary working time is delayed due to longer curing time than other coating materials.

On the other hand, the steel pipe is manufactured in various diameter sizes according to the intended use, and therefore, in the case of the nozzle arm supporting the spray nozzle, the inclination angle must be adjusted according to the diameter size of the steel pipe. As a result, there are drawbacks to the use of equipment.

It is an object of the present invention to provide an epoxy lining apparatus for large-scale tap water pipes using a center joint designed to be suitable for epoxy lining treatment of large steel pipes having a diameter of 1000 to 5000 mm.

In addition, another object of the present invention is to provide an epoxy lining apparatus for a large-scale tap water pipe using a center joint in which a connection hose and an air connection hose which are connected to the injection nozzle using the center joint are not twisted with each other during the rotation process.

In addition, another object of the present invention is to provide an epoxy lining apparatus for a large-scale tap water aging steel pipe using a center joint to adjust the inclination angle of the nozzle arm supporting the spray nozzle according to the diameter size of the steel pipe.

In addition, another object of the present invention is to provide an epoxy lining apparatus for a large-scale water supply aging steel pipe using a center joint that can always maintain the angle of the injection nozzle regardless of the angle adjustment of the nozzle arm through the horizontal support.

In the present invention for achieving the above object is an epoxy lining device of a large-scale water supply aging steel pipe lining the steel pipe inner diameter by spraying the epoxy primer supplied from the reactor to the steel pipe inner diameter through the injection nozzle strongly, the lining device in the center A joint is included, the center joint is rotated by the power of the moto and the shaft for driving the nozzle arm for supporting the injection nozzle, and rotatably mounted on the outer diameter of the shaft and there are formed a plurality of flow paths horizontally inside In the outer diameter, a rotor is formed in the outer body and a plurality of peripheral grooves in communication with each of the flow passages are formed on the outside of the rotor, and a plurality of ports are formed in the outer peripheral, respectively communicating with the peripheral grooves of the rotor. And a fixture on the ports of the fixture. The supply hose for supplying the epoxy primer pumped from the rotor and the air supply hose for supplying the air discharged to the compressor are fastened respectively, the flow path of the rotating body to the epoxy primer supplied through the supply hose to the injection nozzle And a connection hose for supplying and an air connection hose for supplying air supplied from the air supply hose to the injection nozzle, respectively.

One side of the center joint and the slip ring case constituting the outer appearance, and the fixed connector is fixedly installed in the slip ring case and a plurality of wires are coupled to one side, the plurality of branch lines extending in communication with the wires on the inner surface; And a slip ring rotatably coupled to an outer diameter of the shaft and including a slip ring formed on a circumferential surface of the rotary connector having ring-shaped terminals electrically connected to the branch lines, respectively. Is electrically connected to the terminals, the other end is installed through the shaft and the rotating body is characterized in that it is further provided with a heating wire that generates heat by the power applied from the outside and warms the connection hose.

An angle adjusting means is attached to the shaft front end of the center joint, and the angle adjusting means is preferably configured by mounting a nozzle arm supporting the spray nozzle in a state close to the inner diameter of the water supply pipe.

The angle adjusting means includes a frame attached to the shaft of the center joint, a hinge coupled to the frame, a nozzle arm supporting the nozzle arm so as to be rotatable, and a guide tube pin-coupled to the tip of the nozzle arm adapter. And a cylinder having a rod coupled to the guide tube and rotating the nozzle arm adapter which is pin-coupled to the guide tube by operating the rod with external power while being pin-fastened to the frame. desirable.

A nozzle adapter for rotatably supporting the injection nozzle is mounted at the tip of the nozzle arm, and one end of the horizontal holder is fastened to the nozzle adapter, and the other end of the horizontal holder is connected to the plate while passing through the nozzle arm. Hinge fastening is preferably configured to maintain a constant angle of the injection nozzle.

The present invention by adjusting the inclination angle of the nozzle arm for supporting the injection nozzle through the angle adjusting means, regardless of the diameter size of the steel pipe, it is possible to perform the lining operation by close to the injection nozzle to the inner diameter of the steel pipe made of various sizes Has the advantage.

In addition, the present invention has the effect that the angle of the injection nozzle can be maintained at all times regardless of the angle adjustment of the nozzle arm through the horizontal support.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

1 and 2 are views showing the configuration of the epoxy lining apparatus of a large waterworks aging steel pipe using a center joint to be implemented in the present invention.

As shown, the epoxy lining apparatus 100 of the present invention includes a bogie 10. The trolley 10 automatically moves forward and backward through the driving wheel 14 rotating by the power of the motor 12 while supporting each component constituting the epoxy lining apparatus 100 of the inner diameter of the steel pipe of the present invention. Will be performed.

On the trolley 10, the tank 16, the reactor 22, the compressor 24, the lifting platform 28, the center joint 32, the angle adjusting means constituting the epoxy lining apparatus 100 of the inner diameter of the steel pipe of the present invention. 50, the nozzle arm 36 and the injection nozzle 46 are provided. At this time, the tank 16 is stored in the epoxy primer, one end is connected to the hose 18, the hose 20 is connected to the reactor 22. The reactor 22 is driven by externally applied power and pumps the epoxy primers stored in the tank 16 through the hoses 18, respectively.

In addition, one end of the supply hose 68 is connected to the reactor 22, and the other end of the supply hose 68 is connected to the connection hose 150 connected to the center joint 32. 150 is connected to the injection nozzle 46 mounted to the nozzle adapter 42 in a state penetrating the inside of the nozzle arm 36.

The compressor 24 is driven by a power source installed in the trolley 10 to generate high pressure air. One end of an air supply hose 72 is connected to the compressor 24, and the other end of the air supply hose 72 is connected to an air connection hose 154 connected to a center joint 32. The hose 154 is connected to the injection nozzle 46 mounted to the nozzle adapter 42 in a state of penetrating the inside of the nozzle arm 36. The platform 28 is positioned to be spaced apart a certain distance on the trolley 10 and is configured to be moved up and down in accordance with the operation of the lift installed on the bottom surface. The lifting table 28 is configured to be movable up and down, but will be described later, when the inner diameter of the small diameter steel pipe P1 is coated, the center joint 32 to which the nozzle arm 36 is connected has a small diameter. This is to accurately position on the center (C1) of the steel pipe (P1).

The center joint 32 is a means mounted on the platform 28 to rotate by the power of the motor and to drive the nozzle arm to rotate. In this case, the center joint is a hose connected to the supply hose 68 and the air supply hose 72 and the hose for supplying the epoxy primer and air, respectively, in the rotation process and the air connection hose 154 and the heating wire 142 ) To implement the anti-twist function so as not to be twisted with each other, a detailed description thereof is as described below.

3 and 4, the center joint 32 includes a shaft 110, a rotating body 112, a fixing body 120 and a slip ring 130.

The shaft 110 constitutes a central axis of the center joint 32. The shaft 110 is connected to the shaft and the chain of the motor 30 on the circumferential surface to rotate by the power of the motor 30 and rotate the nozzle arm 36. Let's go.

The rotating body 112 is a flange 111 is coupled to the front end of the shaft 110, a means for performing a rotation operation with the shaft 110. A through hole 114 is formed in the center of the rotating body 112, and a plurality of flow paths 116 are formed radially around the through hole 114. In addition, a plurality of peripheral grooves 118 are formed in the outer diameter of the rotating body 112 while maintaining a predetermined interval. At this time, the circumferential grooves 118 are configured to communicate with each other, one by one each of the flow path 116 formed in the interior of the rotor 112. The front end of the flow path 116 formed in the rotating body 112 of the connection hose 150 and the air connection hose 154, one end of which is connected to the injection nozzle 46 in the state penetrating the nozzle arm 36 The other end is composed of a coupler (not shown) respectively. The connection hose 1502 and the air connection hose 154 are supplied to the supply hose 68 and the air supply hose which are fastened to the port 122 of the fixed body 120 to be described later through the flow path 116 of the rotating body 112. Each of them is connected to 72 individually.

The stationary body 120 is a means for maintaining the fixed state without being affected by the rotation of the shaft 110 and the rotating body 112 is assembled with the bearing 119 interposed between the outer diameter of the rotating body (112). A plurality of ports 122 are formed through the fixing body 120 while maintaining a predetermined interval, and the supply hose 68 and the air supply hose 72 are couplers (not shown). Fasteners). At this time, the ports 122 are in communication with each of the peripheral grooves 118 formed in the outer diameter of the rotating body 112 one by one. Through the connection structure, the ports 122 of the fixed body 120 have a flow path of the rotating body 112 even though the rotating body 112 performs the rotating operation through the circumferential grooves 118 of the rotating body 112. It is possible to maintain a constant communication with each other, so that the epoxy primer and the air discharged from the supply hose 68 and the air supply hose 72 can be individually supplied to the respective flow paths 116 of the rotating body 112. Can be.

On the other hand, the center joint 32 having the above-described configuration, even if the shaft 110 rotates the nozzle arm 36 by the power of the motor 30, the supply hose 68 and the air supply hose 72 as well as the connection hose The twisting of the 150 and the air connection hose 154 can be prevented.

That is, the supply hose 68 and the air supply hose 72 is connected to the port 122 of the fixed body 120, and is not affected by the rotation of the shaft 110, so that the twist between each other does not occur. do.

After passing through the nozzle arm 36 in a state where one end is coupled to the injection nozzle 46, the connecting hose 150 and the air connecting hose 154 connected to the flow path 116 of the rotating body are connected to the rotating body ( Through the circumferential groove 118 formed in the outer diameter of the 112 to communicate with the port 122 of the fixed body 120, respectively, the rotating body 112 rotates in accordance with the rotation of the shaft 110 Even if performed, the peripheral groove 118 can always communicate with the port 122, so that the connection hose 150 can be supplied with the epoxy primer supplied from the supply hose 68 without twisting each other, and air The connection hose 154 may receive the air supplied from the air supply hose 72 and discharge it to the injection nozzle 46.

On the other hand, the center joint 32 is further provided with a slip ring 130. The slip ring 130 prevents twisting of the heating wires 142 passing through the center joint 32 and the nozzle arm 36 and the wires 136 supplying power to the heating wire 142. Means. The heating wire 142 provides a heat source to the connection hose 150 passing through the nozzle arm 36 to prevent the curing of the epoxy primer passing through the connection hose 150.

3 and 5, the slip ring 130 has a slip ring case 132 constituting an external shape, and is fixedly installed in the slip ring case 132 and has a plurality of wires 136 on one side thereof. And a fixed connector 134 having a plurality of branch lines 138 communicating with the wires 136 extending therein and rotatably coupled to an outer diameter of the shaft 110, and having a branch line on the inner surface thereof. The rotary connector 140 is provided with ring-shaped terminals 139 electrically connected to the respective ones 138 and one end of the rotary connector 140, and the other end thereof is the shaft 110 of the center joint 32. And heating wires 142 that pass through the passage hole 114 of the rotating body 112 and are coupled to the nozzle bracket 38 in the state of passing through the nozzle arm 36.

The slip ring 130 having the above-described configuration has a circumference of the rotary connector 140 in a state where the branch lines 138 installed on the fixed connector 134 are fixed even if the rotary connector 140 rotates by the power of the shaft 110. The wires 136 connected to the fixed connector 134 are always connected to the rotary connector 140 regardless of the rotation of the rotary connector 140. The electrical connection relationship with the heating wires 142 may be maintained at all times, and the twisting of the heating wires 142 may be prevented.

On the other hand, the angle adjusting means 52 is a flange 124 is coupled to the front end of the rotating body 112 constituting the center joint 32, the diameter size of the steel pipe (P) in the state supporting the nozzle arm (36) The angle of inclination of the nozzle arm 36 is adjusted according to the bar, and the detailed configuration of the angle adjusting means 52 will be described later.

The nozzle arm 36 is installed at an angle to the angle adjusting means 52, and is manufactured in the form of a hollow pipe, and the injection nozzle 46 mounted at the tip is close to the inner diameter of the steel pipe (P). Will be positioned. At this time, the lining device of the present invention through the length of the nozzle arm 36 can be easily lining the large steel pipe having a diameter size of 1000 ~ 5000mm. Inside the nozzle arm 36, a connection hose 150, one end of which is connected to the center joint 32, an air connection hose 154, and a plurality of connection wires pass through the nozzle arm 36. The connection hose 150 and the air connection hose 154 penetrating through the () are respectively connected to the injection nozzle 46.

The coupling structure of the injection nozzle 46 and the nozzle arm 36 is fixed to the bracket 38 at the tip of the nozzle arm 36, the nozzle 38 is coupled to the bracket 38, The nozzle adapter 42 is rotatably coupled, and the injection nozzle 46 is attached to the nozzle adapter 42. In addition, the nozzle bracket 38 is provided with a radially formed cap 40, the cap 40 serves to evenly spray on the inner diameter of the tube by spraying the epoxy primer sprayed through the injection nozzle 46. .

In addition, one end of the shoe support holder 48 is coupled to the nozzle adapter 42, and the other end of the horizontal support holder 48 is hinged to the frame 54 constituting the angle adjusting means 52. Configure. When the horizontal support 48 adjusts the inclination angle of the nozzle arm 36, the horizontal support 48 rotates about the hinge 50 coupled to the frame 54 to support the nozzle adapter 42 horizontally at all times. Even if the inclination angle of the nozzle arm 36 is adjusted, the angle of the injection nozzle 46 is always kept constant.

On the other hand, Figure 6 is a view showing in detail the configuration of the angle adjusting means 52 to adjust the inclination angle of the nozzle arm 36 in accordance with the diameter size of the steel pipe (P).

As shown, the angle adjusting means 52 is coupled to the frame 54 attached to the shaft 34 of the center joint 32, the hinge 56 is coupled to the side of the frame 54 and the nozzle arm ( The adapter 58 is rotatably supporting the nozzle arm 36, the guide tube 60 coupled to the pin 61 at the tip of the nozzle arm adapter 58, and the rod coupled to the guide tube 60. A nozzle arm adapter having a 64 and a pin 61 coupled to the guide tube 60 by operating the rod 64 by an external power in a state in which the pin 62 is fastened to the frame 54. It comprises a cylinder 66 which rotates 58).

7A and 7B, the angle adjusting means 52 having the above configuration drives the cylinder 66 to pull the guide tube 60 connected to the rod 64. The nozzle arm adapter 58 coupled with the 60 and the pin 61 rotates downward about the hinge 56 of the frame 54 so that the inclination angle of the nozzle arm 36 can be adjusted downward. .

Hereinafter, the operation of the epoxy lining apparatus 100 of a large-scale waterworks aged steel pipe using a center joint according to the present invention will be described.

First, when the epoxy lining apparatus 100 of the present invention enters into the inner diameter of the aging steel pipe (P), and then power is applied to the reactor 22, the reactor 22 is the tank 16 through the hose 18 ) Is pumped into the supply hose 68, and then the injection nozzle 46 through the connection hose 150 formed in the rotating body 112 flow path 116 of the center joint 32 Is supplied.

Next, when power is supplied to the compressor 24, the compressor 24 is supplied to the air supply hose 72, and then the air formed in the flow path 116 of the rotating body 112 of the center joint 32 The high pressure air is supplied to the injection nozzle 46 via the connection hose 154.

At the same time the epoxy primer is injected from the injection nozzle 46, the shaft 34 of the center joint 32 rotates with the power of the motor 30, and rotates the rotating body 112 of the center joint 32 to the nozzle arm ( 36 is rotated, and thus, the injection nozzle 46 mounted on the nozzle arm 36 rotates along the inner diameter of the steel pipe P, and evenly sprays the epoxy throughout the entire inner diameter of the steel pipe P.

On the other hand, when spraying the epoxy primer to the inner diameter of the steel pipe (P1) made small diameter as shown in Figure 8, the center joint 32 is lowered, and then used to adjust the inclination angle of the nozzle arm (36).

First, the lifting platform 28 is lowered to accurately position the center joint 32 on the center C1 of the steel pipe P1 having a smaller diameter, and then drive the cylinder 66 as shown in FIGS. 7A and 7B. By pulling the guide tube 60 connected to the rod (64) of the cylinder (66), the nozzle arm adapter (58) coupled to the guide tube (60) and the pin (61) is hinged on the frame (54). The tilt angle of the nozzle arm 36 can be adjusted downward by rotating downward about the center 56.

That is, by lowering the platform 28 as described above, the center joint 32 is accurately positioned on the center C1 of the steel pipe P1 having a small diameter, and the nozzle arm (via the angle adjusting means 52). By adjusting the inclination angle of 36) downward, the injection nozzle 46 can be approached to the inner diameter of the steel pipe manufactured in various sizes irrespective of the diameter size, thereby coating the epoxy primer.

1 is a front view of the epoxy lining apparatus of the inner diameter of the steel pipe according to a preferred embodiment of the present invention.

2 shows the side of FIG. 1;

3 is a view showing in detail the configuration of the center joint shown in FIG.

4 is a view taken along the line A-A of FIG.

5 is a view taken along the line B-B of Figure 3;

Figure 6 is a view showing the side of the angle adjustment means shown in FIG.

7A and 7B are respective views showing an operating state of the angle adjusting means.

8 is a view showing a state in which the epoxy lining apparatus of the present invention entered the inner diameter of the steel pipe made of a small diameter.

Claims (5)

 In the epoxy lining apparatus of a large-scale tap water aging steel pipe lining the steel pipe inner diameter by strongly spraying the epoxy primer supplied from the react 22 to the steel pipe inner diameter through the injection nozzle 46, The lining device comprises a center joint 32; The center joint 32 is; A shaft 110 which rotates by the power of the motor 30 and drives the nozzle arm 36 which supports the injection nozzle 46; A plurality of flow paths 116 are rotatably mounted at the tip of the shaft 110 and horizontally formed therein, and a plurality of circumferential grooves 118 are formed in the outer diameter to communicate with the flow paths 116, respectively. A rotating body 112; A fixture (120) fitted to the outside of the rotor (112) and having a plurality of ports (122) formed at its periphery to communicate with the peripheral grooves (118) of the rotor (112), respectively; Port 122 of the fixed body 120, the supply hose 68 for supplying the epoxy primer pumped from the reactor 22, and the air supply hose 72 for supplying air discharged to the compressor 24 ) Are each fastened; In the flow path 116 of the rotating body 112, a connection hose 150 for supplying the epoxy primer supplied through the supply hose 70 to the injection nozzle 46, and in the air supply hose 72 Epoxy lining device of a large waterworks aged steel pipe using a center joint, characterized in that each of the air connection hoses (154) for supplying the supplied air to the injection nozzle (46) is fastened. The method of claim 1, The center joint 32 has a slip ring case 132 constituting an outer appearance; The fixed connector is fixedly installed in the slip ring case 132 and a plurality of wires 136 are coupled to one side thereof, and a plurality of branch lines 138 connected to the wires 136 are individually formed on an inner surface thereof. 134); Slip ring 130 is rotatably coupled to the outer diameter of the shaft 110, the circumferential surface is formed of a rotary connector 140 having ring-shaped terminals 139 electrically coupled to the branch lines 138, respectively. It is included and installed; One end of the slip ring 130 is electrically connected to the terminals 139, and the other end thereof is installed through the shaft 110 and the rotating body 112 to be applied from the outside. Epoxy lining device of a large waterworks aging steel pipe using a center joint, characterized in that the heating wire 142 is further provided to heat the power supply and heat the connection hose 150. The method according to claim 1 or 2, The center joint 32 is mounted on a lifting platform 28 vertically moving up and down, and the center joint 32 supports the injection nozzle 46 in a state close to the inner diameter of the steel pipe P. The nozzle arm 36 is provided, and between the nozzle arm 36 and the center joint 32, an angle adjusting means 52 for adjusting the inclination angle of the nozzle arm 36 is further provided. Epoxy lining device for large waterworks aging steel pipe using center joint. The method of claim 3, The angle adjusting means 52 is; A frame 54 coupled to the rotating body 112 of the center joint 32 by a flange 124; A hinge (56) coupled to the frame (54), the nozzle arm (58) supporting the nozzle arm (36) rotatably; A guide tube (60) coupled to the tip of the nozzle arm adapter (58); The rod 64 is coupled to the guide tube 60, and the rod 64 is operated by external power in a state in which the pin 62 is fastened to the frame 54. Epoxy lining device for a large-scale tap water aging steel pipe using a center joint, characterized in that it comprises a cylinder (66) for rotating the nozzle arm adapter (58) coupled to the pin (61). The method of claim 4, wherein A nozzle adapter (42) rotatably supporting the jet nozzle (46) is mounted at the tip of the nozzle arm (36); One end of the horizontal holder 48 is fastened to the nozzle adapter 42, and the other end of the horizontal holder 48 is hinged to the frame 54 while passing through the nozzle arm 36. Epoxy lining device of a large waterworks aged steel pipe using a center joint, characterized in that the fastening nozzle, to maintain a constant angle of the injection nozzle (46).

Images