KR101690588B1

KR101690588B1 - Pipe cleaning method

Info

Publication number: KR101690588B1
Application number: KR1020150142212A
Authority: KR
Inventors: 김상철; 배철호; 김형숙; 김주환; 최두용
Original assignee: (주)동호플랜트; 한국수자원공사
Priority date: 2015-10-12
Filing date: 2015-10-12
Publication date: 2017-01-02

Abstract

A channel cleaning method is disclosed. According to an embodiment of the present invention, there is provided a pipeline cleaning method having a first valve and a second valve in which a constant water flows and a flow direction of the constant flows, The first valve connects the pump and the injection unit positioned next to the first valve when viewed from the direction in which the constant flow flows, and the pump injects compressed air having a period of the pulse wave form into the injection unit Thereby forming an air pig and discharging the air pig and the constant water through a discharge portion located before the second valve when viewed in a direction in which the constant flow is performed.

Description

[0001] PIPE CLEANING METHOD [0002]

Embodiments of the present invention relate to a pipeline cleaning method using air pigs formed of water and compressed air.

Generally, when a water pipe for supplying tap water is installed for a long time after being installed, a water mist and various foreign substances are deposited on the inner wall of the pipe, or the inner surface of the pipe is oxidized to generate rust which is a metal oxide.

As described above, the scale formed by accumulation of the foreign matter on the inner wall of the water supply pipe becomes gradually thicker with time, which interferes with the smooth flow of the water, thereby lowering the water pressure and the flow rate. Accordingly, the water transfer capability is lowered, and the foreign matter in the inner wall of the pipe is reduced in the ability to transfer the residual chlorine contained in the tap water, which is liable to be exposed to pathogenic bacteria contamination. In addition, when the corrupt scale and foreign matter in the water pipe are melted into the water flowing in the pipe, the water quality is deteriorated.

In order to solve this problem of deterioration of the water quality, it is necessary to replace or clean the piping periodically. Replacing the water pipe buried in the underground is not economical in terms of cost and may cause discomfort to the residents due to the singularity. A method of cleaning the pipeline is required.

Cleaning methods of general water pipes are classified into flushing, swabbing, pigging, air scouring, and the like.

Flushing is a method of removing air pockets in a water line, pumping clean water into the inside of a water pipe, and then speeding up the flow to clean the water pipe. In swabbing and pigging, appropriate pigs, etc., Is a method for removing the scale of the inner wall of the water line. Air scouring is a type of air compressor that injects high-pressure gas into a water pipe to form an air pigtail formed by the pressure of water and gas flowing in the pipe, which collides with the inner wall of the pipe and adheres to various foreign substances or pipes The scale is cleaned.

It is very inconvenient to open and close the valve lid when inserting the pig into the swab and pigging, which is troublesome because the water supply state must be cut off before opening the valve lid. Flushing or air scouring, on the other hand, requires a flow of fluid above a certain rate to effect scale cleaning, which is expensive to meet. If the speed is not satisfied, the cleaning effect of the pipeline deteriorates.

Korean Patent Publication No. 10-2012-0046363 (2012.05.10)

Embodiments of the present invention are intended to provide a pipeline cleaning method capable of effectively cleaning the inside of a pipeline.

Embodiments of the present invention are intended to provide a pipeline cleaning method capable of cleaning the inside of a pipeline without a separate cleaning device.

According to an embodiment of the present invention, there is provided a pipeline cleaning method having a first valve and a second valve in which a constant water flows and a flow direction of the constant flows, The first valve connects the pump and the injection unit positioned next to the first valve when viewed from the direction in which the constant flow flows, and the pump injects compressed air having a period of the pulse wave form into the injection unit Thereby forming an air pig and discharging the air pig and the constant water through a discharge portion located before the second valve when viewed in a direction in which the constant flow is performed.

The injection section may be located immediately after the first valve and the discharge section may be located immediately before the second valve.

The discharge portion may be a fire hydrant located on the ground or a shed of the saddle installed on the pipeline.

The injector may be a fire hydrant located on the ground or a shed of the saddle installed on the pipeline.

A separate pig may be inserted into the conduit prior to injecting the compressed air.

According to the embodiments of the present invention, compressed air can be supplied to the pipeline in accordance with a predetermined period, thereby effectively cleaning the inside of the pipeline.

In addition, according to the embodiments of the present invention, it is possible to clean the interior of the pipeline without any additional facility by injecting air using a conventional fire hydrant and draining the water containing contaminants, thereby reducing the cost of pipeline cleaning have.

1 is a view showing a pipeline cleaning method according to an embodiment of the present invention;
2 is a view showing a pipeline cleaning method according to another embodiment of the present invention;

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is an exemplary embodiment only and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for efficiently describing the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

1 is a view showing a pipeline cleaning method according to an embodiment of the present invention.

Referring to FIG. 1, a channel 200 is flowed in the channel 100 and a first valve 110 and a second valve 120 ).

In the pipe cleaning method according to the present embodiment, the second valve 120 of the conduit 100 may be locked and the first valve 110 may be opened. It is possible to connect the pump 10 and the injection unit 30 located immediately after the first valve 110 when viewed from the direction in which the constant 200 flows. The pump 10 and the injection unit 30 may be connected to each other through the connection pipe 20. The pump 10 may generate compressed air to provide compressed air to the conduit 100 through the injector 30. [ The injection unit 30 may be a fire extinguisher installed on the ground.

The pump 10 can inject compressed air to the injection unit 30 side with a predetermined period. The pump 10 may generate compressed air in the form of a pulsating wave and inject it into the injection unit 30 side. The compressed air injected through the injector 30 is combined with the constant 200 in the channel 100 so that the compressed air layer 210 and the channel water layer 220 can be repeatedly flowed through the channel 100 have. The compressed air layer 210 and the channel water layer 220 repeatedly flow in the pipeline 100 to effectively provide a shock wave to the foreign matter attached to the pipeline 100. That is, a pulse wave type fluid having a period longer than the case where a fluid having the same pressure flows in the pipeline 100 flows through the pipeline 100, so that the foreign matter adhered to the pipeline 100 can be effectively separated. The separated foreign matter can be moved to the downstream side through the pipeline 100.

The compressed air layer 210 and the channel water layer 220 can be discharged through the discharge portion 50 located immediately before the second valve 120 when viewed from the direction in which the constant 200 flows. Since the exhausted water 230 is mixed with the foreign substances in the pipeline 100 described above, the foreign matter in the pipeline 100 can be discharged through the discharge unit 50. The discharge portion 50 may be a pre-fire formed on the ground.

In the present embodiment, only compressed air having a predetermined period is injected into the pipeline 100, but the present invention is not limited thereto. It is also possible to insert a pig in contact with the inside of the pipeline 100 on the side of the injection part 30 of the pipeline 100 before injecting the compressed air to clean the pipeline 100 more effectively. The pigs are passed through the pipeline 100 by the injected compressed air 210, and the foreign substances adhered to the pipeline 100 can be cleaned as the pigs pass. Therefore, the pipeline 100 can be cleaned more effectively through the pig.

According to the present embodiment, not only the inside of the conduit 100 can be effectively cleaned, but the inside of the conduit 100 can be cleaned without any additional equipments while maintaining the existing facility. Therefore, the inside of the channel 100 can be cleaned while minimizing the cost of cleaning the channel.

2 is a view showing a pipeline cleaning method according to another embodiment of the present invention.

Referring to FIG. 2, unlike the previous embodiment, the injection unit 35 may be a saddle fraction before the channel 100 is installed. Unlike a fire hydrant, the saddle fountain may not be already installed, but may be installed on the perforations of the pipeline 100.

In the pipe cleaning method according to the present embodiment, the second valve 120 of the conduit 100 may be locked and the first valve 110 may be opened. It is possible to connect the pump 10 and the injection unit 35 positioned immediately after the first valve 110 when viewed from the direction in which the constant 200 flows. The pump 10 and the injection unit 35 may be connected to each other through the connection pipe 20. The pump 10 may generate compressed air to provide compressed air to the pipeline 100 through the injection unit 35.

The pump 10 can inject the compressed air to the injection section 35 side with a predetermined period. The pump 10 can generate compressed air in the form of a pulse wave and inject it into the injection unit 35 side. The compressed air injected through the injection unit 35 is combined with the constant 200 in the pipeline 100 so that the compressed air layer 210 and the pipeline water layer 220 can be repeatedly flowed in the pipeline 100 have. The compressed air layer 210 and the channel water layer 220 repeatedly flow in the pipeline 100 to effectively provide a shock wave to the foreign matter attached to the pipeline 100. That is, a pulse wave type fluid having a period longer than the case where a fluid having the same pressure flows in the pipeline 100 flows through the pipeline 100, so that the foreign matter adhered to the pipeline 100 can be effectively separated. The separated foreign matter can be moved to the downstream side through the pipeline 100.

The compressed air layer 210 and the channel water layer 220 can be discharged through the discharge portion 50 located immediately before the second valve 120 when viewed from the direction in which the constant 200 flows. Since the exhausted water 230 is mixed with the foreign substances in the pipeline 100 described above, the foreign matter in the pipeline 100 can be discharged through the discharge unit 50. The discharge portion 50 may be before the digestion formed on the ground like the previous embodiment.

It is possible to insert a pig in contact with the inside of the pipeline 100 on the side of the injection part 30 of the pipeline 100 before injecting the compressed air to clean the pipeline 100 more effectively.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. I will understand. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

10: Pump
20: Connector
30: Injection part (fire hydrant)
35: injection part (before saddle fraction)
50: discharge part (before fire hydrant or saddle fraction)
100: channel
110: first valve
120: second valve
200: constant
210: Compressed air layer
220: channel water layer
230: drain water

Claims

A method of cleaning a channel having a first valve and a second valve in accordance with a flow of a constant water flow in the inside,
The second valve is closed,
Wherein the first valve connects the pump and the injection unit positioned next to the first valve when viewed in a direction in which the constant flow flows,
The pump injects compressed air having a period of a pulse wave form into the injection unit to form an air pig,
And discharging the air pig and the constant water through a discharge portion positioned before the second valve when viewed from the direction in which the constant flows,
Wherein the injection section is located immediately after the first valve and the discharge section is located immediately before the second valve.

delete

The method according to claim 1,
Wherein the discharge portion is a fire hydrant located on the ground or a saddle fountain installed on the pipeline.

The method according to claim 1,
Wherein the injection unit is a fire hydrant located on the ground or a saddle fountain installed on the pipeline.

The method according to claim 1,
Wherein a separate pig is inserted into the conduit prior to injecting the compressed air.