Processing device using drain pump and method thereof

Abstract

The posted content relates to an emergency repair device for a leaking pipe using vacuum pressure and an emergency repair method using the same, which allows for relieving pressure within the leaking pipe, preventing fluid leakage using vacuum pressure, and performing emergency repairs on damaged areas when urgent repair work on a leaking pipe is required due to aging or damage caused by stress in a buried pipe through which fluid flows. An emergency repair device for a leaky pipe using vacuum pressure according to one embodiment of the present specification In a device for emergency repairing a leaking pipe by forming a vacuum pressure within the leaking pipe to relieve the pressure of residual fluid in a work section where a leak has occurred among buried pipes: First and second shut-off valves formed on the left and right sides starting from the working section of the above-mentioned leaking pipe to block the flow of residual fluid in the above-mentioned leaking pipe; A through-type drainage pump detachably mounted in a perforated hole drilled on one side of the above-mentioned leaking pipe to discharge residual fluid inside; A first pressure reducing tank for accommodating a portion of the residual fluid discharged from the work section to remove pressure within the above-mentioned leaking pipe; A second pressure reducing tank that separates the condensate of the cooling device from the low-temperature air; A discharge pump for discharging fluid from the first and second pressure reduction tanks to the outside; A cooling device connected to the first pressure reducing tank and for lowering the temperature of high-temperature steam transferred from the first pressure reducing tank by exchanging heat with a cooler; The present invention provides an emergency repair device for a leak pipe using vacuum pressure, characterized by comprising a vacuum pump for reducing pressure within the leak pipe by discharging air that has been heat-exchanged from the cooling device to the outside.

Description

Technology Field

[0001] The present specification relates to an emergency repair of a leaking pipe using vacuum pressure and an emergency repair method using the same, wherein the device is configured to relieve pressure within the leaking pipe, prevent fluid leakage using vacuum pressure, and enable emergency repair of the damaged area when urgent repair work is required due to aging or damage caused by stress in a buried pipe through which a fluid (e.g., chemically treated hot water for heating) flows. Background Technology

[0002] Unless otherwise indicated in this specification, the contents described in this section are not prior art for the claims of this application, and are not to be recognized as prior art simply because they are included in this section.

[0004] Generally, pipes for transporting various fluids, such as gas pipes, industrial water pipes, hot and cold water pipes, oil transport pipes, hot and cold water pipes, and water supply pipes, are buried underground in cities.

[0005] Fluid flowing through the interior of these pipes may leak out through leaks caused by pipe damage or other factors. This necessitates the speed and urgency of maintenance and repair work.

[0006] Furthermore, regarding risk factors caused by fluid leaks from leaking pipes and the excavation work required for repairs following the operation of shut-off valves in the event of high-temperature fluid leaks, the pressure and evaporation pressure (vapor pressure) within the leaking pipes obstruct the worker's visibility. Consequently, workers face comprehensive difficulties, including delays in repair work such as welding at the leak site and compromised work safety.

[0007] In other words, in order to perform maintenance work on these pipes, such as valve replacement due to aging, relocation of pipes, installation of new pipes, replacement of old pipes, and branching work, it is necessary to block a specific part of the pipe (referring to an arbitrary work section) to prevent fluid from flowing and to divert the flow.

[0008] At this time, a plugging machine is used to insert the plugging head into the main pipe to be blocked, thereby blocking the flow of fluid.

[0009] The fluids transported through the aforementioned main pipe include high-pressure gas and heating water. For example, the gas has a pressure of about 60 kg / cm² and a temperature of about -40°C, and the heating water has a pressure of about 16 kg / cm² and a temperature of about 110°C, and each contains chemicals.

[0010] Figure 1 illustrates a state in which a plugging head is inserted to block fluid flow within a pipe.

[0011] To block the main pipe (11), a branch fitting (12) and a sandwich valve (21) are installed on the main pipe (11), and then a branch pipe (20) is installed. Then, a plugging machine (23) is installed on the branch pipe (20).

[0012] A lever body (24) is installed on the piston rod (22) of the plugging machine (23), and a plugging head (25) is connected to the lever body (24).

[0013] When the piston rod (22) of the aforementioned plugging machine (23) is extended downward, the leading roller formed on the plugging head (25) comes into contact with the bottom of the main pipe (11), causing the lever body (24) to rotate, and then the second roller comes into contact with the bottom of the main pipe (11), and finally the lever body (24) rotates 90° so that the third roller comes into contact with the bottom of the main pipe (11).

[0014] In this way, as the lever body (24) rotates 90°, the blocking rubber of the plugging head (25) formed at the tip of the lever body (24) seals the passage of the main pipe (11), thereby blocking the flow of fluid.

[0015] In order to block the flow of fluid only to the section of the pipe to be maintained and to allow the fluid to continue flowing, the downstream of the main pipe (11) is blocked in the same way using a plugging machine (23) and a bypass pipe is installed so that the fluid bypasses the maintenance pipe.

[0016] In this way, pipe maintenance work is carried out on the specific part of the pipe to be maintained while ensuring that fluid does not flow through the part of the pipe to be maintained.

[0017] However, conventionally, since repair work, such as pipe replacement by cutting, is performed without removing residual fluid remaining in the specific piping to be maintained—that is, the maintenance piping—there were problems in which workers were exposed to a hazardous environment due to the pressure and temperature of the discharged fluid, and residual fluid leaked out during the repair work, causing environmental pollution, or seeped into the ground, causing soil contamination.

[0018] In particular, high-temperature heating water (for example, about 110°C) contains harmful substances such as chemicals, and if it leaks or infiltrates into the soil, it poses a serious problem that can cause contamination of the air, groundwater, and soil.

[0020] A device for removing residual fluid in maintenance piping and a method for removing the same are registered and published in Korean Patent Publication No. 10-1999357 (published on July 11, 2019). The problem to be solved

[0021] The embodiments of the present specification relate to an emergency repair device for a leaking pipe using vacuum pressure and an emergency repair method using the same, which allows for the easy and rapid performance of repair work, such as preliminary work like excavation, by discharging a portion of the residual fluid inside the leaking pipe to the outside to lower the pressure when urgent repair work on a leaking pipe is required due to aging or damage caused by stress, etc., in a buried pipe through which a fluid having a predetermined temperature and pressure flows.

[0022] The embodiments of this specification relate to an emergency repair device for a leaking pipe using vacuum pressure and an emergency repair method using the same, which enables high-quality emergency repair work by improving the safe working environment through the elimination of risk factors such as pressure and high temperature conditions inside the leaking pipe during repair work on the leaking pipe, thereby protecting the worker from risk (hazard) factors.

[0023] The embodiments of this specification relate to an emergency repair device for a leaking pipe using vacuum pressure and an emergency repair method using the same, which allows work to be performed in a state where risk factors are eliminated by minimizing fluid leakage due to vacuum formation by discharging a portion of the fluid inside the leaking pipe. means of solving the problem

[0024] According to one embodiment of the present specification, in order to achieve the above and other purposes of the present specification,

[0025] In a device for emergency repairing a leaking pipe by forming a vacuum pressure within the leaking pipe to relieve the pressure of residual fluid in a work section where a leak has occurred among buried pipes:

[0026] First and second shut-off valves formed on the left and right sides starting from the working section of the above-mentioned leaking pipe to block the flow of residual fluid in the above-mentioned leaking pipe;

[0027] A through-type drainage pump detachably mounted in a perforated hole drilled on one side of the above-mentioned leaking pipe to discharge residual fluid inside;

[0028] A first pressure reducing tank for accommodating a portion of the residual fluid discharged from the work section to remove pressure within the above-mentioned leaking pipe;

[0029] A second pressure reducing tank that separates the condensate of the cooling device from the low-temperature air;

[0030] A discharge pump for discharging fluid from the first and second pressure reduction tanks to the outside;

[0031] A cooling device connected to the first pressure reducing tank and for lowering the temperature of high-temperature steam transferred from the first pressure reducing tank by exchanging heat with a cooler;

[0032] The present invention provides an emergency repair device for a leak pipe using vacuum pressure, characterized by comprising a vacuum pump for reducing pressure within the leak pipe by discharging air that has been heat-exchanged from the cooling device to the outside.

[0034] According to one embodiment of the present specification, in order to achieve the above and other purposes of the present specification,

[0035] It is applied to an emergency repair method for a leaking pipe to relieve the pressure of residual fluid in the work section where a leak occurred among the buried pipes by forming a vacuum pressure inside the leaking pipe to emergency repair the leaking pipe, and

[0036] Step of installing a drain pump in the leaking pipe;

[0037] A step of discharging a portion of the residual fluid inside the leaking pipe to the outside by driving a drainage pump to lower the pressure inside the leaking pipe and form a vacuum pressure inside;

[0038] A step of excavating the area around the leaking part of the above-mentioned leaking pipe using equipment;

[0039] A step of directly welding the damaged leaking portion of the above-mentioned leaking pipe;

[0040] The present invention provides an emergency repair method for a leaking pipe using vacuum pressure, characterized by including the step of reinforcing weld around the damaged leaking area of ​​the leaking pipe. Effects of the invention

[0041] The emergency repair device for a leaky pipe using vacuum pressure and the emergency repair method using the same, according to the embodiment of the present specification having the above-described configuration, have the following advantages.

[0042] According to the embodiments of the present specification, by discharging a portion of the residual fluid in any work section where the fluid flow of the leaking section piping is blocked to the outside, the pressure inside the leaking pipe is lowered, and the working time can be shortened due to the convenience of work such as excavation and welding of the leaking pipe.

[0043] According to the embodiments of the present specification, when repairing a leaking pipe buried underground, risk factors such as pressure and high temperature inside the leaking pipe are eliminated, thereby improving the safe working environment and enabling high-quality emergency repair work, which protects the worker from risk (hazard) factors.

[0044] According to the embodiments of the present specification, by discharging a portion of the fluid inside the leaking pipe, fluid leakage due to vacuum formation is minimized, allowing work to be performed while eliminating risk factors, and the leaking pipe can be welded while a portion of the fluid remains inside the leaking pipe, thereby significantly improving workability. Brief explanation of the drawing

[0045] FIG. 1 is a diagram showing the usage state of a plugging machine and a sandwich valve installed in a leaking pipe according to the prior art to block fluid flow. FIG. 2 is a drawing of an emergency repair device for a leaky pipe using vacuum pressure according to a preferred embodiment of the present specification. FIG. 3 is a drawing of a through-type drainage pump for discharging residual fluid from a leaking pipe in the emergency recovery device of FIG. 2. FIG. 4 is a drawing showing the usage state of a through-type drainage pump in the emergency recovery device illustrated in FIG. 2. Figure 5 is a schematic work flowchart showing the process of emergency repairing a leaking pipe using the emergency repair device shown in Figure 2. Specific details for implementing the invention

[0046] Hereinafter, an emergency repair device for a leaky pipe using vacuum pressure and an emergency repair method using the same, according to a preferred embodiment of the present specification, will be described in detail with reference to the attached drawings.

[0048] Referring to FIGS. 2 to 5, an emergency repair device for a leaky pipe using vacuum pressure according to one embodiment of the present specification is

[0049] In a device for emergency repairing a leaking pipe by forming a vacuum pressure within the leaking pipe to relieve the pressure of residual fluid in a work section where a leaking part (referring to the cracked part "a" in FIG. 2) has occurred in a conventional buried pipe (for example, comprising a steel pipe (a), an insulating material (b) foam-molded with urethane to surround the steel pipe (a), and a PE pipe (c) covering the insulating material (b)):

[0050] Conventional first and second shut-off valves (51, 52) formed on the left and right sides starting from the working section of the leak pipe (50) to block the flow of internal residual fluid maintaining any temperature and pressure of the leak pipe (50);

[0051] A through-type drainage pump (53) for discharging residual fluid inside, which is detachably mounted in a hole (not indicated in the drawing) drilled on one side of a leak pipe (50);

[0052] A first pressure reduction tank (54) that receives a portion of residual fluid and high-temperature steam by the pressure reduction action of a vacuum pump (60) from the working section to remove pressure within the leak pipe (50), and has a conventional water level detection sensor installed inside;

[0053] A discharge pump (55) for discharging residual fluid from the first and second pressure reduction tanks (54, 59) to the outside (for example, a conventional water tank (58), but not limited thereto);

[0054] A conventional reservoir (58) for temporarily storing residual fluid discharged from a leaking pipe (50) by driving a drainage pump (53);

[0055] A cooling device (56) connected to a first pressure reduction tank (54) and for lowering the temperature of high-temperature heating water (steam) transferred from the first pressure reduction tank (54) by heat exchange with a conventional cooler;

[0056] A second pressure reduction tank (59) connected to a cooling device (56), which separates steam and moisture maintaining a low temperature that are transferred after heat exchange from the cooling device (56) by a conventional steam-water separator (mesh separator) (57) inside, and transfers the separated steam (water) to a reservoir (58), and has a conventional water level detection sensor (not shown) installed inside;

[0057] It is characterized by having a vacuum pump (60) connected to the second pressure reduction tank (59) and for reducing the pressure in the leak pipe (50) by discharging air that has been heat-exchanged from the cooling device (56) and passed through the second pressure reduction tank (59) to the outside.

[0059] At this time, according to a more preferred embodiment, as shown in FIG. 3, the aforementioned through-type drainage pump (53)

[0060] A cylindrical housing (64) that connects a fluid inlet (61) and a fluid outlet (62), formed at the bottom and top respectively, through an internal fluid passage (63);

[0061] A rotating shaft (66) that is housed in a housing (64) and rotatably connected to a conventional drive motor (65) mounted on the top of the housing (64);

[0062] A multi-stage impeller (67) mounted on the lower end of the rotating shaft (66) and, when rotating, moves the fluid that is sucked in through the fluid inlet (61) and then flows into the fluid outlet (62) along the fluid passage (63);

[0063] It is characterized by having a support piece (68) that includes a bushing that rotatably supports the rotation axis (66) at any position inside the housing (64) to prevent shaking when the rotation axis (66) rotates.

[0064] In addition, as shown in FIG. 2, it is characterized by being connected to the first and second pressure reduction tanks (54, 59) connected to the aforementioned vacuum pump (60), and connected to a drain valve (76) installed in a machine room of a building or apartment, etc., which can discharge fluid and steam from the leak pipe (50) to lower the pressure within the work section, thereby inducing pressure reduction within the work section.

[0065] In addition, as shown in FIG. 2, the leak pipe (50) is installed on one side of a valve box (70) that penetrates the valve box inside a conventional manhole that includes the aforementioned first and second shut-off valves (51, 52), and is connected to a first pressure reducing tank (54) connected to a vacuum pump (60), and is characterized by having an air vent (78) for forming a vacuum inside the leak pipe (50) by discharging water and steam to the outside from the leak pipe (50) to remove internal pressure.

[0066] In addition, the present invention is characterized by having a vacuum forming valve installed in the aforementioned vacuum pump (60), which forms a vacuum inside the leak pipe (50) by driving a through-type drainage pump (53) to discharge a portion of the fluid inside the leak pipe (50) and then stops the fluid discharge, and drives the vacuum pump (60) to form a vacuum inside the leak pipe (50).

[0068] Hereinafter, an emergency repair device for a leaking pipe using vacuum pressure and an emergency repair method using the same, according to one embodiment of the present specification, will be described with reference to the attached drawings.

[0070] As shown in FIGS. 2 to 5, by using a reservoir (58) that stores fluid (heating water, etc.) discharged from the leak pipe (50) by a through-type drainage pump (53) installed on one side of the aforementioned leak pipe (50), the residual fluid in the leak pipe (50) is discharged and stored, thereby preventing the residual fluid from being discharged to the outside and thus preventing environmental pollution caused by leakage of the residual fluid.

[0071] In addition, the residual fluid in the aforementioned leak pipe (50) is discharged into a water tank (58), etc., and since there is no need for separate auxiliary equipment for removing contaminants such as filtering foreign substances or contaminants contained in the residual fluid or chemical treatment, the treatment of the residual fluid is simplified and the cost can be reduced.

[0072] To explain this in detail, if fluid leaks through the damaged part ("A" in FIG. 2) of the aforementioned leak pipe (50), the first and second shut-off valves (51, 52) on both the left and right sides starting from the leak part of the leak pipe (50) that needs repair work are closed to block the flow of fluid inside the leak pipe (50), and then a through-type drainage pump (53) is detachably installed in the leak pipe (50) so that a portion of the residual fluid discharged from the leak pipe (50) can be moved to the reservoir (58) by driving the discharge pump (55).

[0073] As shown in FIG. 5, when urgent repair work is required on a leaking pipe (50) due to aging of a buried pipe through which a fluid having a predetermined temperature and pressure (for example, chemically treated hot water for heating, but not limited thereto) flows, or damage caused by stress (crack, etc.), a through-type drainage pump (53) is installed on one side of the leaking pipe (50) through which the fluid leaks out due to damage to the buried pipe (see S10).

[0074] A portion of the residual fluid inside the leak pipe (50) is discharged to the outside by the aforementioned through-type drainage pump (53) to lower the pressure and form a vacuum inside the leak pipe (50) (see S20).

[0075] The area around the leaking part caused by partial damage due to aging or cracks in the aforementioned leaking pipe (50) is excavated using a conventional excavation machine (see S30).

[0076] The damaged leaking part of the aforementioned leaking pipe (50) (referring to the cracked part of "A" in FIG. 2) is directly welded (see S40).

[0077] A reinforcing plate (d) is attached to the metal pipe (a) surrounding the damaged leaking part of the leaking pipe (50) as described above, and the metal pipe (a) is reinforced by a conventional welding method (see S50).

[0078] Accordingly, the work of emergency repairing the leak area of ​​the aforementioned leak pipe (50) by clearing the soil around it is completed (see S60).

[0080] Although the present specification has described preferred technical concepts by reference to examples, those skilled in the art to which the specification belongs will be able to make various modifications and equivalent alternative embodiments within the scope of the essential characteristics of the specification.

[0081] In other words, the disclosed content is merely an example and can be modified and implemented in various ways by a person skilled in the art without departing from the gist of the claim claimed in the scope of the claim; therefore, the scope of protection of the disclosed content is not limited to the specific embodiments described above.

[0082] Accordingly, the embodiments disclosed in this specification are intended to explain, not limit, the technical concept, and the scope of protection of this specification should be interpreted in accordance with the technical concept of the claims; furthermore, all technical concepts within an equivalent scope should be interpreted as being included within the scope of rights of this specification. Explanation of the symbols

[0083] 50; Leaking pipe 51; First shut-off valve 52; Second shut-off valve 53; through-type drainage pump 54; First pressure reducing tank 55; discharge pump 56; Cooling device 57; Gas-water separator 58; reservoir 59; Second pressure reducing tank 60; vacuum pump 61; Fluid inlet 62; fluid outlet 63; Fluid transfer passage 64; Housing 65; drive motor 66; axis of rotation 67; Impeller 68; Support section 70; valve box 76; Machine room drain valve 78; Air vent

Claims

Claim 1 An emergency repair device for emergency repairing a leaking pipe by forming a vacuum pressure within the leaking pipe to relieve the pressure of residual fluid in a work section where a leak has occurred among buried pipes, comprising: first and second shut-off valves formed on the left and right sides relative to the work section of the leaking pipe to block the flow of residual fluid in the leaking pipe; a through-type drainage pump detachably mounted in a bore hole drilled on one side of the leaking pipe to discharge internal residual fluid; a first pressure reducing tank to receive a portion of the residual fluid discharged from the work section to remove pressure within the leaking pipe; a second pressure reducing tank to separate condensate from a cooling device and low-temperature air; a discharge pump to discharge fluid from the first and second pressure reducing tanks to the outside; a cooling device connected to the first pressure reducing tank and configured to lower the temperature by heat-exchanging high-temperature steam moving from the first pressure reducing tank with a cooler; and air moving after heat exchange from the cooling device to the outside An emergency repair device for a leak pipe using vacuum pressure, characterized by having a vacuum pump for discharging and reducing the pressure within the leak pipe. Claim 2 delete Claim 3 An emergency repair device for a leak pipe using vacuum pressure according to claim 1, characterized in that it is connected to communicate with the first pressure reduction tank, and is connected to the machine room drain valve of a supply pipe that branches off from the leak pipe to supply to the APT to reduce pressure within the work section, thereby discharging fluid and steam to reduce pressure. Claim 4 An emergency repair device for a leak pipe using vacuum pressure according to claim 1, wherein a valve box (70) through which the leak pipe (50) passes is installed inside a manhole in which the first and second shut-off valves (51, 52) are installed, and an air vent (78) is installed on one side of the leak pipe (50) located inside the valve box (70) and connected to a first pressure reducing tank (54) connected to the vacuum pump (60) to discharge water and steam from the leak pipe (50) to the outside and remove internal pressure, thereby forming a vacuum state inside the leak pipe (50). Claim 5 An emergency repair device for a leaking pipe using vacuum pressure according to claim 1, further comprising: a vacuum forming valve installed in the vacuum pump, which discharges a portion of the fluid inside the leaking pipe by driving the through-type drainage pump to form a vacuum inside, and then stops the fluid discharge, and drives the vacuum pump to form a vacuum state inside the leaking pipe. Claim 6 An emergency repair method for a leaking pipe using vacuum pressure, characterized by comprising the steps of: applying an emergency repair device for a leaking pipe using vacuum pressure according to any one of claims 1, 3 to 5; mounting a drainage pump on the leaking pipe; driving the drainage pump to discharge a portion of the residual fluid inside the leaking pipe to the outside to lower the pressure inside the leaking pipe and form a vacuum pressure inside; excavating the area around the leaking part of the leaking pipe using equipment; directly welding the damaged leaking part of the leaking pipe; and reinforcing welding the area around the damaged leaking part of the leaking pipe.

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