KR102419749B1 - Rotation type pig for cleaning water pipe and method for cleaning water pipe - Google Patents

Abstract

The present invention relates to a rotating pig for pipe cleaning and a pipe cleaning method. By using rotational power of a rotor blade in a process of conveying a pig by fluid pressure, the pig itself can rotate so that it is possible to perform efficient cleaning work by a cleaning member on a circumferential surface of the pig. In addition, a wire is connected to the pig and the length of the wire is adjusted with a traction device on the ground. In a process of cleaning a sediment layer, a section where the sediment layer is deposited inside the pipe is selected to intensively remove the sediment layer while stopping a progress of the pig. The rotating pig for pipe cleaning includes a first rotating body and a second rotating body.

Description

ROTATION TYPE PIG FOR CLEANING WATER PIPE AND METHOD FOR CLEANING WATER PIPE

The present invention relates to a rotating pig for pipe washing and a pipe washing method, and more particularly, a rotating pig for pipe washing and pipe for washing a sediment layer such as scale and corrosive deposited in a pipe for water supply that transports and supplies water. It relates to a cleaning method.

In general, when the pipe for water supply is used for a long period of time, as the inside of the pipe is oxidized, the water passage ability due to the sediment layer such as corrosive material and scale is reduced, and the sediment layer is accumulated and stuck on the inner wall of the pipe, so that the function as a pipe cannot be exhibited 100%. In addition, the sediment layer such as corrosion and scale contaminates the fluid, develops bad odors and the growth of bacteria, and when it leaks to the outside, it adversely affects health. In particular, various methods are used to solve this problem, and one of them is to use a pig as a cleaning device for cleaning the tube.

Conventionally, a work of removing the sediment layer inside the pipe for water supply through a brush work or a high-pressure washing work was performed while the pig put into the pipe proceeds by a fluid pressure such as water.

However, there is a problem in that it is difficult to properly clean the sediment layer because a significant number of the sediment layers remain as they are in the conventional conventional pipe cleaning method.

Republic of Korea Patent Publication No. 2010-0109114 (2010.10.08)

Accordingly, the present invention has been devised to solve the above problems, and an object of the present invention is to allow the pig itself to be rotatable by the rotational power of the rotor blades in the process in which the pig is pressurized by fluid pressure, so that the circumferential surface of the pig An object of the present invention is to provide a rotating pig for pipe washing and a pipe washing method that can perform an efficient washing operation by the washing member of the .

In addition, another object of the present invention is to connect the traction device to the pig via a wire to stop the progress of the pig in a specific section inside the pipe in the process of washing the sediment layer, so that the sediment layer can be intensively removed. there is

In order to achieve the above object, the present invention cleans the inner surface of the pipe while the pig proceeds inside the pipe by the fluid pressure of a fluid composed of water discharged from the water injection pipe and compressed air discharged from the air injection pipe. A rotating pig for pipe cleaning, the pig including a housing formed in a cylindrical shape and having a hollow penetrating in the longitudinal direction, and a cleaning member provided on an outer circumferential surface of the housing, wherein the housing is formed of an elastic material a first rotating body; and a second rotating body integrally coupled to the hollow of the housing of the first rotating body, having a hollow penetrating in the longitudinal direction, extending in the longitudinal direction to the center of the hollow of the second rotating body, and extending to the shaft support part A rotation shaft provided with both ends supported by the rotation shaft, and a plurality of rotation blades installed on the circumference of the rotation shaft, and a second rotation body rotating together with the first rotation body when the rotation blade rotates, the shaft support part is a plurality of supports having one end fixed to the inner surface of the second rotating body and extending radially in the central direction of the rotation shaft and spaced apart from each other, and a shaft support provided at the other end of the support to support the end of the rotation shaft. Including, allowing movement of the fluid between the supports, one side is connected to the shaft support located at the rear, and the other side includes a wire connected to a traction device, by the fluid passing through the hollow of the second rotating body The pig rotates and moves forward while rotating the rotary blade by fluid pressure, and by adjusting the length of the wire by the traction device, the position of the pig in the pipe is configured to be adjusted.

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According to an embodiment of the present invention, one or more mounting grooves in which the cleaning member is installed to be replaced are formed on the outer circumferential surface of the first rotating body, and the cleaning member is mounted in the mounting groove.

According to an embodiment of the present invention, the cleaning member is formed along the circumferential direction on the outer peripheral surface of the first rotating body.

According to an embodiment of the present invention, the shaft support part located at the rear of the pig is connected to a traction device located on the ground via a wire, and the traction device is a section in which the sediment layer is deposited by adjusting the length of the wire. Select to make the pig stopable.

The present invention, a first step of checking the contamination state inside the pipe; A second step of installing a towing device for pulling the wire on the ground; a third step of connecting the wire wound on the traction device to the pig and then putting it into the pipe; a fourth step of removing the sediment layer on the inner surface of the pipe while the pig injected into the pipe moves the inside of the pipe according to the fluid pressure; and selecting a section in which the sediment layer confirmed in the first step is deposited, adjusting the position of the pig by adjusting the length of the wire through the traction device, and then stopping the progress of the pig. A fifth step of intensively removing the layer; provides a tube washing method comprising a.

According to an embodiment of the present invention, a water injection pipe for discharging water and an air injection pipe for discharging air to provide the fluid pressure by air pressure and water pressure to the pipe are installed at the rear of the pig.

According to the rotary pig and tube cleaning method according to the present invention having the configuration as described above, the pig itself is rotatable using the rotational centrifugal force of the rotary blade in the process of the pig being pressurized by fluid pressure, so that the circumferential surface of the pig By performing an efficient cleaning operation by a cleaning member of

In addition, by connecting the wire to the pig, the length of the wire is controlled from the ground with a towing device, but in the process of washing the sediment layer, the progress of the pig is stopped at a specific location inside the pipe, especially in the section where the sediment layer remains relatively large. It has the effect of intensively removing the sediment layer.

1 is a view showing a pipe washing state using a pipe washing pig according to the present invention.
Figure 2 is an exploded perspective view showing a pig for cleaning the tube according to the present invention.
Figure 3 is a front perspective view showing a pig for cleaning the tube according to the present invention.
Figure 4 is a side cross-sectional view showing a pig for cleaning the tube according to the present invention.
5 is a rear perspective view showing a pig for cleaning a tube according to the present invention.
6 is a process diagram for explaining a pipe washing method of a rotating pig for pipe washing according to the present invention.

Since the present invention may have various changes and may have various forms, embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements.

The above terms are used only for the purpose of distinguishing one component from another. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

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

1 is a view showing a pipe washing state using a pipe washing pig according to the present invention, FIG. 2 is an exploded perspective view showing a pipe washing pig according to the present invention, and FIG. 3 is a pipe washing pig according to the present invention A front perspective view showing, FIG. 4 is a side cross-sectional view showing a pipe washing pig according to the present invention, FIG. 5 is a rear perspective view showing a pipe washing pig according to the present invention, and FIG. 6 is a pipe washing rotation according to the present invention It is a process chart for explaining the method of cleaning the tube of the pig.

In the present invention, in describing the front and rear, the front represents the front in the direction in which the pig 100 moves, and the rear represents the back in the direction in which the pig 100 moves.

The pipe cleaning pig 100 is transferred at a predetermined speed along the water supply pipe (p) by the fluid pressure of water and compressed air, and deposits the sediment layer such as scale and corrosive material deposited on the inner surface of the pipe (p) with the pig ( 100) to remove it through the brush operation.

As shown in Figure 1, the first and second valves 1 and 2 for blocking the flow of water and introducing and withdrawing the pig 100 into the pipe (p) are installed in the pipe (p) for water supply. have. The first valve 1 is installed at the starting point of the section to be washed of the pipe p, and the second valve 2 is installed at the end point of the section to be washed. After closing the section to be cleaned by the first and second valves 1 and 2, the pig 100 is put into the pipe p through the inlet on the first valve 1 side, and the pipe p ) When the internal cleaning operation is completed, the pig 100 is recovered through the outlet on the side of the second valve 2 .

In addition, in the pipe for water supply (p), in the process of the pig 100 proceeding along the pipe for water supply (p), a smooth pressure feeding process through the fluid pressure of water and compressed air is performed at the rear of the pig 100. A water injection pipe 10 for discharging water and an air injection pipe 20 for discharging air are installed. Since the water injection pipe 10 and the air injection pipe 20 need to generate a fluid pressure by water and compressed air, a pump may be connected.

The pipe (p) to be cleaned is discharged from the water injection pipe 10 in a state in which the flow of water is blocked, and the water discharged from the water injection pipe 10 is blocked by the first valve (1). The water in the water is transferred by bypassing the pipe to be cleaned (p).

The air injection pipe 20 may provide compressed air to the pipe (p) through the inlet by generating compressed air. Compressed air injected through the inlet may be mixed with water provided from the water injection pipe 10 and flow through the pipe (p) through air pressure and water pressure.

Therefore, the water provided from the water injection pipe 10 and the compressed air provided from the air injection pipe 20 act from the rear of the pig 100 that is injected through the inlet of the pipe for the water supply pipe (p) to make the pig 100. It is transported by pneumatic and hydraulic pressure.

The pig 100 is transferred to the inside of the pipe (p) by the injected air pressure and water pressure, and while the pig 100 is transported, it is possible to wash the sediment layer attached to the pipe (p). The sediment layer discharged from the pipe p washed by the pig 100 may be collected by bypassing the filtration tank t.

As shown in FIG. 2 , the pig 100 is inserted into the hollow of the first hollow body 110 and the first rotary body 110 having a cylindrical housing having a predetermined thickness to generate rotational power. It includes a second rotating body 120 for generating. The hollows of the first and second rotating bodies 110 and 120 are formed to penetrate in the longitudinal direction.

At least one mounting groove 111 is formed on the outer circumferential surface of the first rotating body 110, and is detachably mounted in the mounting groove 111 so that it can be replaced in case of damage or wear, and the mounting groove 111 ) is provided with a cleaning member 112 to which at least one wire brush or the like is attached.

Specifically, at least one cleaning member 112 is mounted on the outer circumferential surface of the first rotating body 110 in the circumferential direction, such as a wire brush, to wash the sediment layer in the pipe (p).

In the embodiment of the present invention, the number or shape of the cleaning member 112 may be variously changed, and at least one or more may be mounted on the outer circumferential surface along the longitudinal direction. Although the cleaning member 112 is limited to a wire brush in the embodiment of the present invention, it is not necessarily limited thereto, and various types of the cleaning member 112 may be applied.

According to an embodiment of the present invention, the first rotating body 110 may be made of an elastic material to prevent external damage due to collision with the inner surface of the pipe for water supply (p).

The second rotating body 120 has a hollow cylindrical shape inserted into the hollow of the first rotating body 110 and fixed, and the rotating shaft 121 is installed in the center of the hollow.

The rotation shaft 121 is supported by the shaft support part 122, and the shaft support part 122 is provided with a pair to support both ends of the rotation shaft 121 so that both ends of the rotation shaft 121 can be rotated in place without being separated. .

The shaft support 122 supports the rotation shaft 121 and includes at least two or more supports 122a and a shaft support 122b. The shaft support part 122 has one side of the support 122a fixed to the inner surface of the second rotating body 120 and the other side of the support 122a extends in the central direction of the rotation shaft 121 to the shaft support part 122 at the center. The located shaft support (122b) is to support the end of the rotation shaft (121). The supports 122a are spaced apart from each other so that the fluid can move therebetween.

A plurality of rotating blades 123 are radially fixed along the circumference to the rotating shaft 121 . Accordingly, the rotor blades 123 together with the rotation shaft 121 are rotatably installed in the hollow of the second rotation body 120 .

The rotary blade 123 is formed to extend spirally from the front end to the rear end. A plurality of wing surfaces are arranged along the center of the rotation shaft 121 at predetermined intervals, and any one wing surface is a gentle curve connecting one end and the other end of the wing surface so as to be substantially parallel without interfering with the neighboring wing surface. to form a spiral.

The rotary blade 123 is mounted on a rotary shaft 121 that is driven to rotate inside the second rotary body 120 and rotates together with the rotary shaft 121 by centrifugal force generated from the rotary blade 123 to the second rotary body ( 120) is rotatable.

In this way, the first rotating body 110 and the second rotating body 120 are integrally coupled to the pig 100 transferred along the pipe (p) while the rotating blades 123 are rotated by air pressure and water pressure. Since centrifugal force is transmitted to the first rotating body 110 and the second rotating body 120 of 100), the pig 100 itself can be transported by the thrust generated while rotating along the pipe (p).

Therefore, the centrifugal force of the rotor blades 123 acts on the first and second rotation bodies 110 and 120 in the process in which the pig 100 is transported along the pipe for water supply (p) by the fluid pressure of water and air, so that the pipe (p) The sediment layer adhering to the inside can be efficiently removed while rotating and pulverizing.

In addition, the pig 100 connects one side of the wire w to the shaft support 122 of the second rotating body 120 , and connects the other side of the wire w with the traction device 30 on the ground. Pig 100 is configured to reciprocate back and forth in the inside of the pipe (p) in a state connected to the traction device 30 via the wire (w).

At least one connecting means is provided in the shaft support part 122 located at the rear of the pig 100 so that the wire w can be connected. The connecting means is such as a connecting ring connected to the support 122a or the shaft support 122b of the shaft support 122, and in order to align the center of gravity of the wire w, one at the center of the shaft support 122b located at the rear link can be connected. In addition, when the connecting ring is installed on the support 122a, the number of connecting rings that match the number of the support 122a may be connected, and it is preferable that the wire w has a structure that does not get tangled.

Therefore, in the process of washing the sediment layer using the pig 100, the length of the wire w through the traction device 30 is adjusted to a specific position inside the pipe (p), that is, the section where the sediment layer is deposited. By selection, the sediment layer can be intensively removed while the progress of the pig 100 is stopped.

In order to check the location where the sediment layer is deposited in the pipe for the water supply (p), a camera for taking an image inside the pipe (p) flows through the pipe (p) before cleaning the pipe (p) by the pig 100 It is desirable to ensure that the cleaning state inside the pipe (p) can be accurately checked.

In this way, by using the traction device 30, the cleaning process is intensively performed in the state where the pig 100 for transporting the pipe (p) for water supply is selected and stopped in the section where the sediment layer is deposited to remove the sediment layer. will improve efficiency.

6 is a process diagram for explaining a pipe washing method of the rotating pig 100 for washing a pipe according to the present invention, and the pipe washing method is as follows.

First, on the ground, the washing section of the water supply pipe (p) is closed, and the contamination condition inside the pipe (p) is captured and monitored through a camera before washing the pipe (p). Before the washing of the water supply pipe (p) is performed, the contamination state inside the pipe (p) is checked through the camera, but the section in which the sediment layer is deposited can be intensively checked.

Install the traction device 30 for pulling the wire (w) around the first valve (1) for putting the pig 100 into the pipe (p), and the wire (w) wound on the traction device (30) ) is connected to the rear of the pig 100.

Then, the pig 100 connected to the traction device 30 via the wire (w) is put into the pipe (p) for the water supply to be washed, and compressed with water through the water injection pipe (10) and the air injection pipe (20). Generates fluid pressure by air.

The pig 100 pumped at a predetermined speed inside the pipe (p) by the fluid pressure allows the inside of the pipe (p) to be cleaned more cleanly.

At this time, since the second rotating body 120 of the pig 100 is rotatable by centrifugal force by the rotational power of the rotating blades 123 , the first rotating body 110 integrally coupled to the second rotating body 120 . ) also rotates. Accordingly, the entire pig 100 proceeds while rotating the inside of the pipe for the water pipe (p).

Therefore, the cleaning member 112 attached to the outer circumferential surface of the first rotating body 110 is cleaned while rotating the inside of the pipe for the water pipe (p). When the cleaning member 112 is rotated together by the rotational power of the pig 100 by the rotary blade 123 in the process in which the pig 100 is pressurized by the fluid pressure, various types of attached to the inner surface of the pipe (p) The sediment layer containing foreign substances is washed.

In the state where the sediment layer is deposited through the camera before washing, the length of the wire w is adjusted through the traction device 30 to stop the progress of the pig 100 in the section where the sediment layer is located, , while the cleaning member 112 of the pig 100 rotates, the removal operation can be intensively performed on the sediment layer attached to the inner surface of the pipe (p).

The cleaned pig 100 is recovered through the outlet, and is recovered through the outlet in a state in which the wire w connected to the traction device 30 is disconnected.

By bypassing the sediment layer remaining in the water supply pipe (p) due to washing to the filtration tank (t) and collecting it, environmental pollution can be prevented.

Therefore, in the present invention, the pig 100 itself is rotatable by the rotational power of the rotary blade 123 in the process in which the pig 100 is pressurized by the fluid pressure, so that the cleaning member 112 of the circumferential surface of the pig 100 is By performing an efficient cleaning operation by the water supply pipe (p), it is possible to more cleanly remove the sediment layer attached to the inner surface.

In addition, by connecting the wire (w) to the pig (100), the length of the wire (w) is adjusted from the ground to the traction device (30), but a relatively large amount of sediment is deposited on the inner surface of the pipe (p) for water supply. It is possible to intensively remove the sediment layer in a state in which the progress of the pig 100 is stopped in the section.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

10: water injection pipe 20: air injection pipe
30: traction device 100: pig
110: first rotating body 111: mounting groove
112: cleaning member 120: second rotating body
121: rotation shaft 122: shaft support part
122a: support 122b: shaft support
123: rotary wing

Claims (7)

A rotary pig for pipe cleaning that cleans the inner surface of the pipe while the pig proceeds inside the pipe by the fluid pressure of a fluid composed of water discharged from the water injection pipe and compressed air discharged from the air injection pipe,
The pig includes a housing formed in a cylindrical shape and having a hollow penetrating in the longitudinal direction, and a cleaning member provided on an outer circumferential surface of the housing, wherein the housing includes a first rotating body made of an elastic material; and
A second rotating body integrally coupled to the hollow of the housing of the first rotating body, having a hollow penetrating in the longitudinal direction, extending in the longitudinal direction to the center of the hollow of the second rotating body, and formed by a shaft support part A second rotating body having a rotating shaft having both ends supported and installed, and a plurality of rotating blades installed on the periphery of the rotating shaft, the second rotating body rotating together with the first rotating body when the rotating blades rotate;
The shaft support portion includes a plurality of supports having one end fixed to the inner surface of the second rotating body and extending radially in the central direction of the rotation shaft and spaced apart from each other, and the other end of the support is provided to support the end of the rotation shaft. including a shaft support, allowing the movement of fluid between the supports,
One side is connected to the shaft support located at the rear and the other side includes a wire connected to a traction device,
The pig rotates and moves forward while rotating of the rotary blade by the fluid pressure by the fluid passing through the hollow of the second rotating body,
By adjusting the length of the wire by the traction device is configured to be able to adjust the position of the pig inside the pipe, a pipe washing rotary pig.
According to claim 1,
Rotating pig for pipe cleaning, characterized in that at least one mounting groove for replacing the cleaning member is formed on the outer circumferential surface of the first rotating body.
According to claim 1,
Further comprising a camera capable of photographing the state of contamination inside the pipe before cleaning the pipe,
By adjusting the length of the wire through the traction device, it is possible to remove the sediment while the pig is rotated in a stopped state in a selected section of the position where the sediment is deposited.
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