KR100767217B1 - An apparatus for repairing pipelines laid under the ground using an air pressure and the method thereof - Google Patents

Abstract

A device for repairing pipes laid under the ground by using pneumatic pressure and a repairing method thereby are provided to repair a fine leak quickly and accurately at a low cost by filling up a broken part of the pipe with compressed air mixed with repairing powder while measuring internal pressure of the pipe continuously. A pipe repairing device includes a couple of packers(12,12a) closing two ends of a pipe(10), an air supply apparatus(20) supplying heated compressed air, a check valve(15) preventing counter flow and regulating flow of compressed air from the air supply apparatus, a first repairing agent supply unit(30) supplying repairing powder(18), a mixing container(50) mixing compressed air with the repairing powder, a supply pipe(16) transferring mixed compressed air to the pipe, a pressure sensor(14) measuring pressure in the pipe, and a central control unit(60) controlling units. The air supply apparatus comprises an air compressor(22) compressing air, a ceramic heater(24) heating compressed air from the air compressor, and an air tank(26) storing high temperature compressed air from the ceramic heater temporarily.

Description

An apparatus for repairing pipelines laid under the ground using an air pressure and the method

1 is a view showing the overall configuration of the buried pipeline repair apparatus using the air pressure according to an embodiment of the present invention.

Figure 2 is a view showing a state in which the first type maintenance material supply device is coupled to the mixing container shown in FIG.

Figure 3 is a view showing a state in which the second type maintenance material supply device coupled to the mixing container shown in FIG.

4 is a view showing the internal configuration of the central control unit shown in FIG.

5 is a view showing the overall configuration of the buried pipeline repair apparatus using the air pressure according to another embodiment of the present invention.

Figure 6 is a view showing a state in which the repair material is deposited on the damaged portions shown in Figures 1 and 5.

7 is a flow chart showing a repair method using a buried pipeline repair device using the air pressure according to the present invention.

<Explanation of symbols for main parts of the drawings>

10, 10a: Buried pipe road 11, 11 ': Manhole

12, 12a: Packer 14: pressure detection sensor

15: check valve 16, 16 ': supply pipe

17: repair manhole cover 18: repair material

20: air supply device 30: type 1 repair material supply device

40: type 2 repair material 50: mixing container

60: central control unit

The present invention relates to a buried pipeline repairing apparatus using a pneumatic pressure and a repair method using the same, and more particularly, in the case where a leak occurs due to breakage of a pipeline buried underground, a buried pipeline of a predetermined section including a damaged part is provided. Sealed using a pair of packers, and compressed air mixed with powder-type water-retaining material is injected into the air-filled buried pipe by using an air supply device and a water refilling device installed on the ground. And by using the air pressure to repair the buried pipe easily without replacing the pipe in which the damaged part is deposited by filling the damaged material with the compressed air flowing out to the damaged part due to the temperature difference. The present invention relates to a pipeline repair device and a repair method using the same.

In general, various kinds of pipes are installed in the basement such as water and sewage pipes, communication lines, and the like.

Once the buried work is done, the buried condition is complicated and not easy to access, so even if the buried pipeline is damaged due to some factors and leaks, check the damaged area as well as the damage, unless special inspection is done. Difficult to do

If leakage occurs in water supply and sewage pipes using hume pipes, which are a type of reinforced concrete pipes, the sewage that is transported through them may leak out of the buried pipelines and contaminate the surrounding environment. In order to prevent and solve the problem, leakage inspection should be carried out regularly as well as immediately after laying.

In the conventional leak inspection method to check the leakage of the buried pipeline, first, a method of excavating the land where the pipeline is buried to check whether it is leaked directly with the naked eye, and when the camera is buried in the buried pipeline. Method of checking the leakage inside the pipe by moving the built-in small device or robot, etc., or the method of the buried pipe leakage test device using the air pressure filed by the applicant of the present invention and its method (Patent Application No. 2007-23892) and the like, there is a pneumatic leak inspection method using a fluid or a watertight inspection method.

Through the various leak test methods mentioned above, the buried pipes are checked for leaks and damaged parts are repaired.

As a conventional method of repairing a buried pipeline, the first method is to excavate the land covering the buried pipeline and replace the damaged one with a new one, or to repair the damaged part outside the exposed buried pipeline. Enters a repair device equipped with a camera and a robot arm into a buried pipe in a state where the pipe is buried, moves to a damaged part while checking the image taken by the camera, and washes the damaged part with high pressure water. After that, there is a repairing method in which an intermediate material such as glass fiber or nonwoven fabric is applied to the damaged part by using a synthetic resin such as epoxy, and heat is applied to seal the damaged part.

However, the method of replacing the damaged pipe by exposing the buried pipeline to the outside of the conventional buried pipe repair method mentioned above has a problem that the repair time and repair cost according to the excavation work and the replacement of the pipe takes a lot.

In addition, the conventional repairing method using the intermediate material and the synthetic resin on the outer surface of the buried pipe line or the inner surface of the buried pipe line while being buried is applied only to the inner surface of the pipe line without the penetration of the intermediate material and the synthetic resin to the inside of the damaged part. Coupling force is weak, and the repair material is easily separated from the damaged part due to moisture due to the contents transported through the buried pipe after repair work has a problem that the repair effect is sharply lowered.

In addition, since all of the conventional buried pipe repair methods mentioned above directly check the damaged part where leakage occurs through visual or photographing images, when the damage is minute and the leakage is small, it is difficult to identify the damaged part. There is a problem that can not be carried out to prevent the gradually growing.

On the other hand, after performing the maintenance work through the conventional buried pipeline repair method has a hassle to perform a leak test to confirm whether the repair work is well done.

The present invention is to solve the above problems according to the prior art. That is, an object of the present invention is to seal the buried pipe line including the breakage site where leakage occurs through the packer, which is a sealing member, by spraying the mixed compressed air containing the water-retaining material in the form of the sealed pipe pipe buried pipe Due to the internal and external pressure difference and temperature difference of the mixed compressed air, the repair material is filled through the damaged part, and the damaged material can be easily repaired by the naked eye and moving images. The purpose of the present invention is to provide a buried pipeline repairing device using a pneumatic pressure and a repairing method using the same, which do not require excavation work, thereby reducing the time required for the repair work and reducing the cost.

In addition, by repairing the damaged part of the buried pipe line through the deposition method of the repair material using air pressure, the repair site is filled more closely than the conventional method of attaching glass fiber or nonwoven fabric to the inner wall of the buried pipe line through the synthetic resin, It is possible to prevent the recurrence of damage, and to use the air pressure to repair the buried pipe line repair device using the air pressure and the repair method using the same to detect the pressure inside the buried pipe line at the same time as the repair and leak inspection. have.

In the buried pipe passage maintenance device using the air pressure according to the present invention for achieving the above object is a breakage site in which leakage occurs in the buried pipe path installed between the manhole, in the device for repairing the buried including the damaged site A pair of packers press-fitted at both ends of the pipe line to seal the buried pipe line, an air supply device installed on the ground and supplying heated compressed air, and a flow of compressed air supplied from the air supply device A check valve for preventing backflow, a repair material supplying device for supplying a powdery repair material, a compressed container supplied through the check valve, and a mixing container for mixing the powdery repair material supplied from the repairing material supply device; A supply pipe which is a passage for transferring the mixed compressed air supplied from the mixing container into the sealed buried pipe, and the sealed buried pipe And a central control unit for integrally controlling the pressure detection sensor for measuring internal pressure and the pressure detection sensor, the air supply device, and the repair material supply device.

In addition, the maintenance method using the buried pipe line repairing apparatus using the air pressure according to the present invention for achieving the above object is a breakage site where the leak occurs in the buried pipe line installed between the manhole, the method of repairing the buried pipe line Setting a sealed section including a damaged part of the unit, installing a pair of packers or a repair manhole cover in the set sealed section, connecting an air supply device and a check valve to the ground, and connecting a repair material supply device in sequence And installing through the central control unit and a signal and power supply line to set up a buried pipe repair device using air pressure, and using the buried pipe repair device using the set air pressure to pressurize and heat air. Compressed air is supplied to the mixing vessel through the air supply device, and Spraying the water-type water-retaining material or powder-type water-retaining material mixed with the smoke gas in the mixing container and injecting the water-filled buried pipe into the sealed buried pipe; The pressure change value transmitted by the pressure detection sensor for measuring the pressure inside the sealed buried pipe and the step of filling the broken gap by depositing the insulating material on the damaged portion while exiting to the outside of the buried pipe passage through the Checking through the central control unit to determine whether the buried pipe leakage or characterized in that it comprises a step of determining the completion of the maintenance work.

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

1 is a view showing the overall configuration of the buried pipeline repair apparatus using the air pressure according to an embodiment of the present invention.

Referring to FIG. 1, the buried pipeline repairing apparatus using air pressure according to an embodiment of the present invention has a structure in which pipes 4 having open ends are connected between a manhole 11 and an adjacent manhole 11 ′. In the buried pipe passage (10, 10a), a pair of packers (12, 12a) for sealing both ends of the buried pipe passage 10 including the damaged portion (A) and the compressed air installed on the ground and heated The air supply device 20 for supplying the air supply, the check valve 15 for controlling the flow of the compressed air supplied from the air supply device 20 and preventing the reverse flow, and the supply material for supplying the water-retaining material (18) And a mixing vessel 50 in which a type 1 repair material supply device 30, compressed air supplied through the check valve 15, and a repair material 18 supplied from the first type repair material supply device 30 are mixed with each other. Supply pipe 16, which is a passage for transferring the mixed compressed air supplied from the container 50 into the sealed buried pipe passage 10, and the sealed buried pipe 10 is characterized in that comprises a central control unit 60 for integrated control of various devices constituting the pressure detecting sensor 14 and the buried pipe repair apparatus that measures the intensity of the internal pressure.

The pair of packers 12 and 12a are installed inside the manholes 11 and 11 'connected to both ends of the pipe 4 where the damaged portion A is found, and the inside of the buried conduit 10 is manhole ( 11, 11 ') and the sealing member in space.

The body of the packers 12 and 12a has a cylindrical body so as to be press-fitted into the buried pipeline 10, and the volume of the body can be adjusted to facilitate the press-fit and remove into the buried pipeline 10. Is formed. In addition, one or more o-rings 13 are mounted on the outer circumferential surfaces of the packers 12 and 12a to tightly seal the inside of the buried conduit 10.

In the present embodiment, when the bodies of the packers 12 and 12a are inflated in volume, the magnitude of the pressure injected into the body is set to a size of 1 to 2 kg / cm 2.

According to the function and structure of the packer, the packer 12 is press-fitted into the buried pipe line 10 to simply seal the buried pipe line 10, and the packer is press-fitted into the buried pipe line 10 to seal the inside thereof and penetrate the body. The air inlet 12b is provided is divided into a packer (12a) having a passage connected to the interior of the sealed buried pipe (10).

In the packer 12a having a connection passage, the supply pipe 16 is connected so that the mixed compressed air can be injected into the closed buried conduit 10 through the air inlet 12b, and the pressure of the injected compressed compressed air Pressure detection sensor 14 that can measure the is connected together.

The air supply device 20 includes an air compressor 22 for compressing air in the atmosphere, and a ceramic heater 24 and a ceramic heater 24 for raising a temperature by receiving compressed air from the air compressor 22. It consists of an air tank 26 for temporarily storing the compressed air of high temperature through.

An air compressor or a ring blower may be used as the air compressor 22 capable of compressing the air at a high pressure. In this embodiment, the air compressor 22 has a compression performance as compared with the compressor. A ring blower is used to easily control the amount of air that falls but is supplied.

On the other hand, in the present embodiment, the air is compressed to a pressure of 10 kPa or 20 kPa through the air compressor 22, and the compressed air is heated to the ceramic heater 24 to 40 ~ 50 ℃.

The check valve 15 is connected between the air supply device 20 and the mixing vessel 50 through a supply pipe 16 ′, and the supply pipe by intermittently controlling the flow of the compressed air supplied from the air supply device 20. (16) to adjust the pressure of the mixed compressed air including the water-retaining material 18 in the form of powder is injected into the buried pipeline 10 to prevent the backflow.

The above-mentioned air supply device 20, type 1 repair material supply device 30 and pressure detection sensor 14 are connected to the central control device 60 via signal and power supply lines 62, respectively, and provide integrated control. It works.

In this embodiment, a variety of devices are installed on the ground so that the worker can easily perform the maintenance work of the buried pipeline 10 on the ground out of the state entered into the manhole (11, 11 '), which is installed on the ground The various devices are described in more detail below with reference to the accompanying drawings.

FIG. 2 is a view showing a state in which the first type repairing material supply device is coupled to the mixing container shown in FIG. 1.

Referring to the state in which the first type repair material supply device 30 is coupled to the mixing container 50 shown in FIG. 1 with reference to FIG. 2, first, the first type repair material supply device 30 is a powder repair material 18. It comprises a powder storage tank 31 containing the, and the powder transfer unit 35 for transporting the water retaining material 18 supplied from the powder storage tank 31 to the mixing container (50).

The powder storage tank 31 is a hollow container, the top of which is open to fill the repair material 18 therein, and the storage tank cover 32 is connected to the top.

The through hole 33 through which the lower end of the powder storage tank 31 is filled with the water retaining material 18 is formed downward, and the through hole 33 is formed so as to decrease in diameter as it goes downward. A powder heater 34 for heating the water retaining material 18 that is discharged downward is provided around the through hole 33 to increase the temperature of the water retaining material 18.

The object of repair of the present invention is the site of seam of the water supply and sewage pipe made of reinforced concrete pipe or the buried pipe line made of polyvinyl chloride (PVC), particularly filling the damaged site or seam of the buried pipe. Cement powder made from a mixture of limestone and mud and an appropriate amount of gypsum is used, which provides firm adhesion to environmental factors inside the pipeline.

The powder transfer part 35 is connected to the through hole 33 formed at the lower end of the powder storage tank 31, the conveying screw 36 is mounted inside the body, the repair material dropped through the through hole 33 (18) is transported in the horizontal direction. At this time, the powder supply motor 38 mounted on one side of the powder transfer unit 35 is used as a driving source for the rotary screw 36 to rotate.

One end of the powder transfer part 35 is provided with a connection portion 37 attached to the mixing vessel 50, and the water retaining material 18 carried through the transfer screw 36 is opened at the center of the connection portion 37. Is discharged into the mixing vessel 50.

The mixing container 50 is composed of a storage tank having a hollow portion, the connector 54 to which the connection portion 37 of the powder transfer part 35 is attached is provided on one side of the top of the body, in addition to both sides of the body The pair of supply lines 16, 16 'are connected to face each other. On the other hand, a freely rotating fan 52 is vertically mounted in the hollow portion, and is freely rotated by the compressed air a supplied through the supply pipe 16.

Through such a piping structure, the compressed air (a) through the check valve 15 is supplied to the mixing vessel 50 through the supply pipe 16 'to the hollow portion, which is an inner space thereof, and at the same time the powder transfer unit 35 The water-retaining material (p; 18) in powder form is also supplied to the hollow portion. The supplied water holding material (p) and the compressed air (a) are mixed by the rotation of the fan 52 to form a mixed compressed air (m), the mixed compressed air (m) is a buried pipeline (closed through the supply pipe 16) 10) is supplied into the interior.

3 is a view showing a state in which the second type maintenance material supply device is coupled to the mixing container shown in FIG.

Referring to FIG. 3, the second type repair material supply device 40 according to the present invention includes a smoke repair material combustion tank 41 which is a space where the smoke bomb 43 is burned, and a combustion covering the upper end of the smoke repair material combustion tank 41. The tank cover 42 and the connecting portion 47 is in close contact with the connector 54 of the mixing vessel 50.

The smoke bomb 43 which is burned in the smoke repair material combustion tank 41 has a ignition core 44 which is a wick to ignite, and a ignition agent 46 which is ignited by the fuse 44 surrounding the periphery of the duct 44. And the fired complexing agent (46) generates heat and gas, and is composed of a smokescreen repair material (45) which mixes and supplies cement powder, which is a repair material, to the generated gas.

The complexing agent 46 includes a fuel, an oxidant, a coolant, and the like. The fuel is a material that generates energy while burning, and the oxidant is a material that provides oxygen required when the fuel is burned. In addition, the oxidant controls the combustion time by controlling the endothermic reaction during combustion. In this embodiment, sulfur is used as a fuel, potassium chlorate as an oxidant, and sodium bicarbonate as a coolant.

On the other hand, the smoke screen repair material 45 is composed of a dye, a repair material, a binder, the dye is a compound containing benzanthone absorbs the heat of reaction through the combustion of the complexing agent 46 and at the same time generates a colored gas. The repair material consists of fine cement powder and is bound to the colored gas generated through the dye by acetone as a binder.

That is, when the ignition is performed through the conductive line 44, the fuel is combusted by receiving oxygen from the oxidant of the complexing agent 46, generating heat and gas from the dye, and mixing the cement powder with the generated gas. Colored smoke gas (g) containing the water-retaining material in powder form is discharged into the mixing vessel 50.

At this time, the rate of generation of the smoke gas g can be adjusted by adjusting the amount of the coolant contained in the complexing agent 46.

The soft gas (g) mixed with the repairing material is mixed in the compressed air (a) and the mixing container (50), and then injected into the sealed buried pipe passage (10) through the supply pipe (16), and the buried pipe passage (10). Repair is done by filling the damaged part.

The first type repair material supply device 30 and the second type repair material supply device 40 are selectively used according to the connection structure of the buried pipe line 10 and the material of the pipe line.

4 is a diagram illustrating an internal configuration of the central controller shown in FIG. 1.

Referring to FIG. 4, the central control unit 60 illustrated in FIG. 1 receives and amplifies the pressure value measured from the pressure detection sensor 14 measuring the internal pressure of the sealed buried pipe 10 as a signal ( 63), the A / D converter 64 for digitizing the signal amplified by the amplifier 63, and the operation of the air supply device 20 and the first and second type repair supplies 30 and 40. It is configured to include a control unit 65 for controlling.

The control unit 65 includes an input unit 66 for inputting a set value for the air pressure and the operating time as a reference for controlling the air supply device 20 and the first type and the second type repair materials 30 and 40; In addition, the display unit 67 for displaying the pressure change in the buried pipe 10 and the like on the screen and the output unit 68 for printing the data displayed on the display unit 67 according to a specific form are connected to the control of the control unit 65, respectively. Works accordingly.

In general, since the central control unit 60 is composed of expensive electronic devices, it is preferable to mount the central control unit 60 in a vehicle to prevent loss and damage.

5 is a view showing the overall configuration of the buried pipeline repair apparatus using the air pressure according to another embodiment of the present invention.

Looking at the configuration of the buried pipe line repair device using the air pressure according to another embodiment of the present invention while comparing FIG. 5 with FIG. 1 described above, it can be seen that there is a difference in how to set the closed section of the buried pipe line (10). .

That is, in one embodiment of the present invention, while a sealed section is set through a pair of packers 12 and 12a having different structures, both ends of the buried pipe line 10 in which the damaged portion A is generated, In another embodiment, two packers 12 having no air inlet 12b are used, but one packer 12 is pressed into one end of the conduit 10 exposed through the adjacent manhole 11 '. The other packer 12 is installed at one end of the other conduit 10a connected to the manhole 11 included in the sealed space. At this time, the manhole cover 17 for sealing the manhole 11 is installed at the upper end of the manhole 11 included in the sealed space.

That is, in another embodiment of the present invention, the supply pipe 16 through which the compressed compressed air is supplied is connected to the repair manhole cover 17, and the pressure detection sensor 14 is provided at the center of the repair manhole cover 17. It is connected to measure the pressure of the enclosed internal space.

In addition, an o-ring (not shown) is provided at a portion where the repair manhole cover 17 is in contact with the upper end of the manhole 11 to more closely seal the inside of the manhole 11 and the buried conduit 10.

As described above, in the embodiment of the present invention, the sealed section into which the mixed compressed air is injected can be freely set using the packers 12 and 12a and the repair manhole cover 17, so that the state and structure of the buried conduits 10 and 10a can be set. It is possible to easily perform a repair according to the above.

FIG. 6 is a view illustrating a state in which a repair material is deposited on the damaged parts illustrated in FIGS. 1 and 5.

Referring to FIG. 6, when the mixed compressed air (m, m ') containing the repair material is injected into the sealed buried pipe line 10, the buried pipe line 10 is damaged due to relatively high pressure compared to the outside. The mixed compressed air (m, m ') exits through the site (A). The mixed compressed air (m, m ') contains a high temperature powdery water-retaining material (18). The mixed compressed air (m, m') has a temperature difference with the basement layer in contact with the outer surface of the tube (4). As heat is absorbed along the damaged portion (A), deposition of the repair material 18 is performed.

As time passes, deposition of the repair material 18 grows in the inner direction of the buried conduit 10 along the interface of the damaged portion A, and the mixed compressed air (m, m ') is discharged through the damaged portion A. It fills the gap so it doesn't go out.

Then, when the mixed compressed air (m, m ') does not escape to the outside of the pipe 4, the pressure inside the buried pipe 10 measured by the pressure detection sensor 14 is no longer changed, buried The maintenance state of the conduit 10 can be easily confirmed.

Taking into account the state of the buried pipeline 10 to be repaired, a suitable pressure value of the mixed compressed air (m, m ') applied thereto is set. In this embodiment, the pressure of the mixed compressed air (m, m') is set. The pressure value of 10 kPa or 20 kPa is selected in consideration of the breakage of the buried pipeline 10 due to the pressure, separation of the pipe joint portion, the diameter of the buried pipeline 10, and the like.

Hereinafter, with reference to the accompanying drawings will be described for the repair method using the buried pipeline repair device using the air pressure according to the present invention.

7 is a flowchart illustrating a repair method using a buried pipe repair apparatus using air pressure according to the present invention.

Looking at the repair method using the buried pipeline repair device using the air pressure according to the present invention with reference to Figure 7, firstly set the sealed section including the damaged part confirmed by the leakage inspection of the buried pipe line, Install a pair of packers or repair manhole covers. (S710)

A pair of packers, which are sealing members of buried pipelines, are installed by being pushed into the buried pipeline by the worker entering the manhole. At this time, when using the buried pipeline repair device using the air pressure according to an embodiment of the present invention is installed by connecting the pressure detection sensor and the supply pipe for measuring the internal pressure of the buried pipe to the packer, in another embodiment of the present invention In case of using buried pipe repair device using pneumatic pressure, connect pressure detection sensor and supply pipe to repair manhole cover.

Thereafter, the air supply device, the check valve and the type 1 repair material supply device (or type 2 repair material supply device) are connected to the ground in order, and a central control device and a signal and power supply line for controlling the respective devices are installed. Connect through. (S720)

When the setting of the repair device to the buried pipe as described above is completed, pressurized air and supply the compressed air heated by heating, and mixed with the water-retaining material in the form of powder is injected into the sealed buried pipe passage (S730).

The supply amount of the mixed compressed air injected into the buried pipeline is determined by the diameter and leakage of the maintenance pipeline inputted to the program of the controller embedded in the central controller. In addition, the heating temperature of the compressed air and the heating temperature of the repairing material are also determined.

The injected mixed compressed air escapes to the outside of the buried pipe through the damaged part by the pressure difference and the temperature difference of the sealed buried pipe, and at the same time, the repair material is deposited on the damaged part to prevent the broken gap.

Whether or not the repair material prevents the damaged part from escaping the compressed air further out of the buried pipe can be confirmed by the output signal of the pressure detection sensor. That is, when leakage no longer occurs, the pressure value measured by the pressure detection sensor does not appear to change.

The output of the pressure detection sensor is amplified by the amplifier, converted into a digital signal through the A / D converter and transmitted to the controller. The control unit appears on the display unit so that the transmitted value can be easily recognized from the outside, and prints the result on a sheet or the like according to a predetermined form using the output unit (S750).

As described above, the repairing method using the buried pipeline repair device using the air pressure according to the present invention can be easily repaired through the deposition of the repair material using the pneumatic pressure even when the damaged part is fine while maintaining the embedded state of the buried pipe. It is possible to prevent the recurrence of the repaired damaged site by repairing the damaged site more firmly than the conventional method of sealing in the buried pipeline using synthetic resin. In addition, it is convenient and economical because it does not need to perform a separate leak test because it is included in the repair process whether or not leaking to the buried pipe to be carried out immediately after the repair work.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical matters of the present invention. It will be clear to those who have knowledge of God.

As described above, the buried conduit repair device using the air pressure and the repair method using the same according to the present invention can be performed by the existing repair method because it uses the compressed air mixed with the powdered repair material to fill the damaged portion of the buried pipe passage Even minute leaks can be repaired, saving time and money.

In addition, the repair effect is more excellent because the repair material is directly filled through the deposition on the damaged portion in the buried pipeline.

In addition, because the internal pressure of the buried pipeline is continuously measured during the repair process, it is possible to omit a separate leak test performed after the repair is made, which is more economical in terms of time and cost required for repair.

Claims (11)

In the device for repairing the damage caused by the leakage occurs in the buried pipeline installed between the manhole, A pair of packers press-fitted at both ends of the buried pipe channel including the damaged part to seal the buried pipe path; An air supply unit installed on the ground and supplying heated compressed air; A check valve for controlling a flow of compressed air supplied from the air supply device and preventing backflow; A repair material supply device for supplying a powder repair material; A mixing vessel for mixing the compressed air supplied through the check valve and the water-retaining material in powder form supplied from the water-retaining material supply device; A supply pipe which is a passage for transferring the mixed compressed air supplied from the mixing container into the closed buried pipe; A pressure detection sensor for measuring an internal pressure of the sealed buried pipe; And A central control unit for integrally controlling the pressure detection sensor, the air supply device, and the repair material supply device; Buried pipe line repair device using air pressure, characterized in that comprising a. The method of claim 1, The air supply device includes an air compressor for compressing and supplying air, a ceramic heater for heating the compressed air from the air compressor, and raising a temperature, and an air tank for temporarily storing high temperature compressed air through the ceramic heater. Buried pipe line repair device using the air pressure, characterized in that configured to. The method of claim 1, The mixing vessel has a hollow portion in the body, the hollow portion buried pipe repair apparatus using the air pressure, characterized in that the vertically provided with a fan that rotates freely. The method of claim 1, The maintenance material supply device is made of a hollow body with both ends of the body is open to the powder storage tank that can contain the maintenance material in the form of powder, a storage tank cover coupled to the top of the powder storage tank, and the inside of the lower end of the powder storage tank And a powder feeder having a conveying screw embedded in the body to convey the powder heater to be attached, the repair material supplied from the powder storage tank to the mixing container, a powder supply motor for rotating the conveying screw, and the mixing container. Buried pipe line repair device using the air pressure, characterized in that it comprises a connecting portion for attaching the powder transfer unit. The method of claim 1, The maintenance material supply device is configured to include a smoke repair material combustion tank, which is a container in which smoke coal is burned, a combustion tank cover covering an upper end of the smoke repair material combustion tank, and a connection part attachable to the mixing container. Buried pipeline repair device. The method of claim 4, wherein The repair material contained in the powder storage tank is a buried pipe line repairing apparatus using air pressure, characterized in that the cement powder. The method of claim 5, The smoke bomb uses a pneumatic pressure, characterized in that it comprises a fuse, a complexing agent made of a fuel, an oxidizing agent, a coolant surrounding the fuser and surrounding the outside of the complexing agent comprises a smoke repairing material made of a dye, a repairing agent, and a binder. Buried pipeline repair device. The method of claim 7, wherein The complexing agent, Sulfur as fuel, potassium chlorate as oxidant, sodium bicarbonate as coolant, The smokescreen repair material, A device containing a benzanthone dye, cement powder as a repair material, and acetone as a binder are used to repair a buried pipe line using air pressure. The method of claim 7, wherein The smoke bomb is a buried pipe repair apparatus using pneumatic pressure, characterized in that for generating a mixed gas containing cement powder in the colored gas by the ignition of the smoke repair material. In the method of repairing a damaged part in which a leak occurs in the buried pipeline installed between the manholes, Setting a sealed section including a damaged part of a buried pipe line, and installing a pair of packers or a repair manhole cover in the set closed section; Connecting the air supply device and the check valve to the ground, connecting and installing the repair material supply device in turn, and connecting the central control device and the signal and power supply line to set up a buried pipe line repair device using air pressure; Using the buried pipeline repair device using the set air pressure, the compressed air heated and pressurized air is supplied to the mixing vessel through the air supply device, and the water-retaining material or smoke screen in powder form supplied from the repair material supply device. Mixing a water-retaining material in a powder form mixed with a gas in the mixing container and spraying it into the closed buried pipe; Filling the broken gaps by depositing a thermal insulation material on the damaged portions while the injected mixed compressed air escapes to the outside of the buried pipelines through the damaged portions of the sealed buried pipelines; And Checking the pressure change value transmitted by the pressure detection sensor for measuring the pressure inside the sealed buried pipe through the central control unit to determine whether the buried pipe is leaked and determining completion of the repair work; Buried pipe line repair method using the air pressure, characterized in that comprises a. The method of claim 10, In the step of determining the leakage of the buried pipe line and the completion of the repair work through the pressure change value, if the damage portion of the buried pipe line is filled through the deposition of the repair material, the pressure change value measured by the pressure detection sensor is Buried pipe repair method using the air pressure, characterized in that it is kept constant.

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