KR101171215B1 - Apparatus for intercepting the water supply having temporary the water supply function and method of construction for repairing a water pipe using the same - Google Patents

Abstract

The present invention relates to a water supply blocking device having a temporary water supply function and a water pipe repair method using the same so that the water supply is not completely blocked during the maintenance work to remove the scale of the water pipe.

Water supply cut-off device having a temporary water supply function according to an embodiment of the present invention is a water supply block that is detachably coupled to the end of any one water pipe cut to cut off the water supply; It is configured to include; the input / withdrawal portion is mounted to one end of the other water pipe is cut, wherein the water cutoff portion is connected to the branch pipe for the temporary water supply is configured to enable the temporary water supply selectively from the water pipe combined with the water cutoff The input / discharge unit may further include a pressing unit that provides a support force to the water supply blocking unit in order to prevent the water supply blocking unit from being separated from an end region adjacent to the water supply blocking unit.

With the above configuration, the present invention enables temporary water supply while performing work for repairing the water pipe, and also enables water supply of working water from the water pipe in which the maintenance work is performed, thereby reducing work time and efficiency. It can improve the work environment, improve the working environment and reduce the construction cost.

Water pipe, scale, temporary water supply, branch pipe, water shutoff

Description

A water supply shutoff device having a temporary water supply function and a water pipe repairing method using the same

The present invention relates to a water supply blocking device having a temporary water supply function and a water pipe repair method using the same so that the water supply is not completely blocked during the maintenance work to remove the scale of the water pipe.

Water pipes are scaled up due to the occurrence of rust in them during use. That is, foreign matter contained in the fluid flowing inside is attached to the inner surface of the hollow cylinder, foreign matter in such a hollow cylinder is easily fixed as time passes, it is difficult to remove once stuck. As such, the scale formed therein not only prevents smooth water supply, but also causes excessive pressure on a localized portion, causing damage to the water supply pipe. In addition, the scale accelerates the corrosion of the water pipe or the metal joint of the pipe and shortens its life. Moreover, other foreign matter can also stick to the scale, leading to other problems that cause water contamination.

In order to solve this problem, devices for removing foreign matters stuck in the water supply pipe have been developed. When the maintenance work for removing the scale of the water pipe using the devices developed as described above is performed, the water is cut off to the water pipe of a predetermined area (distance) to remove the scale.

In other words, excavate two places at a certain distance, cut the water pipe in the state that the water supply of the water pipe is cut off, insert a device to remove the scale inside the water pipe, remove the skew, and then connect the water pipe again and refill Work is performed.

In this case, it takes a considerable time to complete the work, the water supply must be shut off from the start to the end of the work, so residents who receive water through the water pipe of the work is bound to be limited in the use of the water.

In addition, the use of water is essential for the descaling operation, the inconvenience of having to supply the working water from elsewhere because the supply of water is cut off.

Meanwhile, in the related art, an apparatus (Korean Patent Registration No. 0313778 and Korean Patent Registration No. 0418114) was developed to prevent the scale from occurring again while removing the scale, thereby simplifying the operation to simply connect the cut water pipe.

However, if there is a scale inside, problems such as local pressure rise and water contamination continue until the scale is removed. Therefore, it is preferable to mount after removing the scale. In this case, the working time will inevitably take time corresponding to the normal working time.

In other words, residents have to be uncomfortable while repairing the water pipes.

The present invention is made by recognizing at least one of the needs or problems occurring during the conventional water pipe maintenance work as described above.

One object of the present invention is to enable temporary water supply while performing work for repairing a water pipe.

Another object of the present invention is to enable the water supply of the working water for the maintenance work of the water pipe from the water pipe in which the maintenance work is made.

Still another object of the present invention is to prevent leakage of water into the work space even when the water supply shutoff valve mounted on the existing water pipe is not blocked by the scale.

Another object of the present invention is to shorten the working time for repairing the water pipe as much as possible.

A water supply shutoff apparatus having a temporary water supply function related to an embodiment for realizing at least one of the above problems, and a water pipe repairing method using the same may include the following features.

The present invention is basically based on being configured to enable temporary water supply while performing maintenance work on the water pipe.

Water supply cut-off device having a temporary water supply function according to an embodiment of the present invention is a water supply block that is detachably coupled to the end of any one water pipe cut to cut off the water supply; It may be configured to include; the input / exit portion is mounted to one end of the other water pipe cut. In this case, the water supply blocking unit may be configured to be connected to the branch pipe for the temporary water supply can be temporarily supplied from the water pipe combined with the water supply blocking unit. In addition, the input / discharge unit may further include a pressing unit for providing support to the water supply blocking unit in order to prevent the water supply blocking unit from being separated from an end region adjacent to the water supply blocking unit.

In this case, the water supply blocking portion and the pressure ring fitted to the water pipe; A water supply interrupter body disposed to contact the cut end of the water pipe; A sealing member disposed between the pressure wheel and the water supply blocking unit main body to block leakage by the adhesion force between the pressure wheel and the water supply blocking unit main body; It may be configured to include; a pressing member and a fastening member for providing an adhesive force such that the pressure ring and the water supply blocking unit body are in close contact with each other.

Meanwhile, the valve may be further connected to the branch pipe, and in this case, the connection part may be further mounted to the valve.

In addition, the input / exit part may be configured to be mounted in a structure in which the input / exit part body extends from the water pipe at one end of the other water pipe which has been cut. In this case, an opening may be provided in any one area of the main body of the input / exit part, and the opening may be mounted to open and close.

On the other hand, the input / exit unit body may be further provided with a handle, in this case, the cover is hinged to the handle is mounted so as to be opened and closed, and the other end of the cover handle is provided in a position opposite the locking member It may be configured to be detachably mounted on the fixing.

In addition, the input / discharge unit may further include an anti-collision unit for preventing the descaling device from colliding with the water supply blocking unit. In this case, the anti-collision part may have a structure in which an elastic member is provided on the support part provided in the input / exit part body or the cover.

Water pipe repair method using a water supply blocking device having a temporary water supply function according to another embodiment of the present invention includes the steps of excavating the ground of the two areas and cutting the water pipe in a state in which the water supply is blocked; Mounting a water supply blocking portion at one end of the cut water supply-side water pipe, and mounting an input / discharge unit at an end of the water pipe in a region where water is not supplied; Initiating temporary water supply through the branch pipe of the water supply blocker; Passing the scale removal device from one end of the cut water pipe to the other end to remove the scale inside the water pipe; Blocking the temporary water supply and connecting the cut water pipes and burying the excavated ground; may be made.

In this case, the method may further include coating the inside of the water pipe to prevent scale generation after descaling.

Meanwhile, the method may further include connecting a device for removing and preventing scale.

As described above, according to the present invention, the temporary water supply is possible even while performing the work for repairing the water pipe.

In addition, according to the present invention, it is possible to supply the water for the maintenance work of the water pipe from the water pipe in which the maintenance work is performed, and it is possible to supply the water directly at the work site, thereby improving the efficiency of the work, construction cost Can reduce the cost.

In addition, according to the present invention, even if the water supply shutoff valve mounted on the existing water pipe is not blocked by the scale to prevent the leakage of water to the work space to increase the efficiency of the work, improve the working environment Can be.

In addition, according to the present invention, since the application of the device for water supply cutoff and scale work of the water pipe can be made more quickly, the working time for repairing the water pipe can be shortened as much as possible.

In order to help the understanding of the features of the present invention as described above, it will be described in detail with respect to the water supply shutoff device having a temporary water supply function associated with an embodiment of the present invention and a water pipe repair method using the same.

Hereinafter, exemplary embodiments will be described based on embodiments best suited for understanding the technical characteristics of the present invention, and the technical features of the present invention are not limited by the illustrated embodiments, It is to be understood that the present invention may be implemented as illustrated embodiments. Accordingly, the present invention may be modified in various ways within the technical scope of the present invention through the embodiments described below, and such modified embodiments fall within the technical scope of the present invention.

In order to facilitate understanding of the embodiments to be described below, in the reference numerals shown in the accompanying drawings, among the constituent elements which perform the same function in each embodiment, the related constituent elements are indicated by the same or an extension line number.

Embodiments related to the present invention are basically based on being configured to allow temporary water supply even during maintenance of the water pipe.

1 is a water supply blocking device 100 having a temporary water supply function according to an embodiment of the present invention. The water cutoff device 100 is excavated from the ground, and then cut and removed a portion of the water pipe to be scaled, and then mounted on the cut water pipes 1a and 1b.

In general, the water pipe is provided with a switchgear (not shown) for each section for renovation work. However, the switchgear cannot be completely cut off of the water supply by the scale formed inside the water pipe, nor can the water required for the home, the mall, or the factory be supplied while the work is in progress.

Accordingly, the water pipe 1a at the position where the water is supplied is embodied as one embodiment of the present invention so as to prevent leakage of water, which is not completely blocked by the opening and closing device, to be introduced into the work space and to supply water if necessary. The water supply blocking unit 110 constituting the water supply blocking device 100 according to an example may be mounted.

In addition, an input / exit part 120 constituting the water supply shutoff device 100 may be mounted at an end portion of the other water pipe 1b that is cut. The input / exit part 120 is a component for inputting and discharging an apparatus for removing the scale 10 formed inside the water pipe.

On the other hand, the input / exit unit 120 may also be used as a work bench for inputting the descaling device 30 or the coating device 40 described below. In this case, operations such as assembly work, adjustment work, and dismantling work for the descaling device 30 or the coating device 40 may be performed on the input / exit unit 120.

In general, in order to remove the scale, the water pipe is cut by digging two areas at a distance of about 100 meters or more, and the scale removing device 30 is introduced into the water pipe 1b located at the center of the two drilled areas. (10) will be removed. In this case, the input / exit part 120 may be mounted at one end or both ends of the water pipe 1b positioned at the center to facilitate the input and discharge of the scale removing device 30.

On the basis of the accompanying drawings will be described in more detail the configuration of the water supply blocking device 100 according to an embodiment of the present invention.

As shown in Figure 2a and 2b, the water supply blocking device 100 is provided with a water supply blocking unit 110 is coupled to the end of the cut water pipe (1a) to serve as a stopper. In this case, the water supply blocking unit 110 may be provided so that the branch pipe 114 is provided in any one or more areas so that the necessary water can be supplied even during the maintenance work of the water pipe.

On the other hand, the water supply blocking unit 110 may use a pressure wheel 111 for mounting to the end of the water pipe (1a). In this case, the pressure wheel 111 may use a generally known configuration. For example, after inserting the pressure ring 111 having a ring-shaped structure as shown in the end region of the water pipe 1a, the water supply block body 112 serving as a stopper is connected to the water pipe 1a. It may be arranged to contact the end of the, and configured to be fixed using the fastening member 114.

In this case, a sealing member 113 is disposed between the pressure ring 111 and the water supply blocking unit main body 112 so that the pressure ring 111 and the water supply blocking unit main body 112 are closely contacted by the fastening member 114. By the sealing member 113 to press the outer peripheral surface of the water pipe (1a) may be configured to generate a fixing force.

The fastening member 114 may be configured using a bolt 114a having a structure in which one end is bent and a nut 114b fastened to an end of the bolt 114a. In this case, a flange 112b may be provided around the water supply blocking unit main body 112 to configure the bent portion of the bolt 114a. In addition, a hole 111a is formed along the circumference of the pressing ring 111 so that the nut 114b may be fastened to the bolt 114a after the bolt 114a is inserted therethrough. Alternatively, the pressure ring 111 and the water supply blocking unit main body 112 itself may be configured to be screwed together.

The sealing member 113 is sealed to the pressure ring 111 so that sufficient elastic deformation is formed between the pressure ring 111 and the water supply blocker main body 112 to pressurize the outer circumferential surface of the water pipe 1a. The pressing protrusion 111b may be further formed in an area in which the member 113 is in contact. In addition, the water supply blocking unit main body 112 may further include an insertion portion 112a in a region where the end portion of the water pipe 1a is in contact. In this case, the insertion part 112a may be formed to insert the sealing member 113 together with the end of the water pipe 1a. In addition, the inner circumference of the insertion part 112a may be inclined so that the elastic deformation of the sealing member 113 is sufficiently performed.

In addition, a discharge port 112d may be formed in the water supply blocking unit main body 112 so that the branch pipe 115 may be connected to the branch pipe 115. In this case, the branch pipe 115 may be connected in a structure that can be attached and detached by screwing, may be made of a structure in which the branch pipe 115 is integrally formed by a casting or the like, or integrally formed by casting.

On the other hand, the branch pipe 115 may be further connected to the valve 116 to enable selective water supply, the valve 116 is connected so that the pipe (not shown) for supplying water to a place that requires water can be connected. The socket 117 may be further provided.

The water supply blocking unit 110 may be configured such that a plurality of branch pipes 114 are connected to supply the living water and the work place. On the other hand, a plurality of branch pipes are further connected to the pipe connected to the socket 117 may be configured to enable the temporary supply of living water to a plurality of areas. That is, the temporary supply of water may be selectively operated depending on the situation or the environment.

As shown in Figs. 3A to 3C, the input / exit part 120 is cut from the water pipe 1b at another end of the water pipe 1b, that is, at the end of the water pipe 1b where the scaling operation is to be made. It is mounted in an extended structure. The descaling device 30 is easily inserted into the water pipe 1b by the feeding / exiting unit 120, and the descaling device 30 that has completed the scaling operation is removed from the water pipe 1b. I can take it out stably. On the other hand, the scaling work for the entire water pipe (1b) can be made evenly.

In this case, the input / exit part 120 may be mounted at both ends of the water pipe 1b, and in some cases, may be mounted only at the end of the water pipe 1b in the direction in which the scale removing device 30 is discharged. You may.

On the other hand, the inlet / outlet 120 mounted at the end of the water pipe 1b adjacent to the water supply block 110 prevents the water supply block 110 from being separated from the water pipe 1a by water pressure. In order to do this, the pressing unit 125 may be further provided.

More specifically, an example of such a configuration will be described. In the in / out part 120, a flow path having the same shape as that of the water pipe 1b is formed in the main body 121, and one end of the water pipe ( Removably coupled to the end of 1b). In this case, a fixing member 124 for mounting to the end of the water pipe (1b) may be provided at the end of the input / discharge unit body 121. The fixing member 124 may be made of a member such as a bolt as shown, or may be configured using a generally known clamping means. In addition, the fixing member 124 may be mounted in a structure that penetrates the support member 121c provided in the input / exit part main body 121 as shown, or, alternatively, the input / exit part main body 121 ) May be mounted on itself.

In addition, the input / exit part main body 121 may have an opening 121a formed in one region for inputting and exiting the scale removing mechanism 30. In addition, a cover 122 may be provided in an area in which the opening part 121a is formed, so that the opening part 121a may be opened and closed. In this case, one end of the cover 122 may be detachably coupled to the input / exit part main body 121 by a hinge 127 in a rotatable state, and the other end may include a locking member 128. And may be configured to be locked in a closed state.

On the other hand, the input / exit unit body 121 may be further provided with a handle 126 for convenience of transportation. In this case, as shown, the cover 127 may be detachably coupled to one end thereof in a rotatable state by the hinge 127, and the locking member 128 of the cover 127 is disposed opposite. It may be configured to be locked by engaging the handle 126 to be.

The cover 122 may further include an anti-collision unit 123 for preventing the scale control device which is moved while scaling, from colliding with the water supply blocking unit 110. That is, when the descaling device 30 performs the scaling operation while moving at a high speed, since the braking device does not exist, if the power is not controlled at the end point, the descaling device 30 collides with the water supply blocking unit 110 and the descaling device 30 ) Or may cause damage to the water supply blocking unit 110 or the water pipe 1a. On the contrary, if power is removed in a state in which the descaling operation is not completely completed, the scale is present at the local position (that is, the end region) inside the water pipe 1b.

Therefore, the anti-scaling unit 123 may be provided at one position of the cover 122 so that the scale removing apparatus 30 may collide with the impact preventing unit 123 to be buffered. In this case, the impact preventing part 123 may be configured such that an elastic member 123b which is a buffering action is disposed on one side of the support part 123a. On the other hand, the other side of the support 123a may be further provided with a rib 123c for reinforcement. Unlike the illustrated figure, the impact prevention part 123 may be provided at any one position of the input / exit part main body 121.

On the other hand, the input / withdrawal unit 120 is pressurizing portion 125 to prevent the water supply block 110 mounted on the water pipe (1a) in the adjacent position is separated from the water pipe (1a) by water pressure May be further provided. For this configuration, the end portion of the input / exit portion main body 121 may be provided with a pressing portion 125 coupled in a supported state. In this case, a flange 121b may be further provided at an end of the input / exit part main body 121, and the pressing part 125 may be mounted in a state supported by the flange 121b.

On the other hand, the pressing portion 125 may be configured to be screwed in a structure penetrating through the flange (121b). That is, the pressing unit 125 is configured to have a structure such as the bolt (125a) is configured to be adjustable in the length of the exposed area can be configured to press one side of the water supply blocking unit (110). In this case, the bolt 125a may be configured to fix the bolt 125a at a position where the nut 125b is further mounted and adjusted.

In addition, the water supply blocking unit main body 112 may further include a support part 112c for determining a position where the pressing part 125 is in contact. In this case, the support portion 112c may be further formed with a groove so that the position is not separated in the state in which the pressing portion 125 is in contact.

On the other hand, in the inlet / outlet part body 121, the cut portion 121e at a position facing the branch pipe 114 so that interference with the branch pipe 114 does not occur when the cutting width of the water pipe is narrow according to the working environment. May be further formed. In this configuration, when the cutting width is narrow, the mounting may be performed in a state where a part of the branch pipe 114 is inserted into the cutout 121e formed in the input / exit part main body 121.

The water supply shutoff device having a temporary water supply function, which can be configured as described above, can be used for the maintenance work (scaling work) described below of the water pipe.

As shown in Figure 4a, the water pipe to be repaired is to excavate two ground (2) of both end regions, and to cut the water pipe. In this case, the water pipe (1a) in the direction of the water supply flows to block the water supply using a water supply opening and closing device (not shown) mounted on the existing water pipe.

As shown in FIG. 4B, the water supply block 110 described above is mounted to the water pipe 1a in the direction in which the water is supplied, and the water pipe 1b to which the scaling operation is performed is placed in / out of the water outlet 1 ( 120 is mounted.

As shown in FIG. 4C, an input / exit part 120 may be mounted at the other end of the water pipe 1b in which the scaling operation is performed. Then, when water is supplied from the water pipe 1a to which the water is supplied, or to the water pipe 1c in another area in which the water supply is blocked due to cutting, the water pipe 1c in the other area is supplied. ) May be further mounted to the above-described water supply blocking unit 110.

In this way, the water supply shutoff device 100 having the temporary water supply function may be opened in the region of the cut water pipe again to open the water supply opening and closing device so that the temporary water supply through the branch pipe 114 is performed. In this case, the temporary water supply may be connected to a pipe having a plurality of branch pipes to the connection plug 116 such that the temporary water supply may be made to a plurality of areas where existing water supply is made, such as a home, a business office, or a factory. It is also possible to ensure that the supply of working water required for

As shown in FIG. 5 in the state in which the temporary water supply is enabled as described above, the scale removing device 30 is input to one end to remove the scale 10 formed in the water pipe 1b. In this case, the scale removing device 30 may use devices such as Korean Patent Registration No. 10-0805853, Korean Patent Registration No. 10-0823690, and Korean Patent Registration No. 10-0654986, or other conventionally known materials. It is also possible to use a device.

After the scale 10 is removed in this way, the temporary water supply is cut off and the ground water 2 is embedded after reconnecting the cut water pipes 1a and 1b. If the descaling of the entire water pipe is performed sequentially, a water supply breaker having a temporary water supply function as described above after excavating the ground 2 in another area and cutting the other area of the water pipe 1c ( 100) to perform the scaling operation.

In this case, as mentioned above, by the configuration of the input / exit unit 120, it is possible to facilitate the mounting or loading of the descaling device 30. In addition, since the input / exit part 120 may be performed when the scale removing device 30 is input and exited, scaling of the entire water pipe may be efficiently performed.

On the other hand, as shown in Figure 6a, the coating operation for repairing the inside of the tube is further added to the internal flow path of the water pipe (1b) after the scaling operation is suppressed by the coating device 40 is suppressed from the scale is formed. Can be performed.

Even in this case, it is possible to facilitate the mounting or loading of the coating device 40 by the configuration of the input / exit unit 120. In addition, since the coating device 40 can be made by the input / exit part 120 when the coating device 40 is inserted and withdrawn, the coating operation of the entire water pipe can be efficiently performed.

On the other hand, as shown in Figure 6b, after the scaling operation or the coating operation is finished, the scale removal, such as the Korean Patent Registration No. 0313778 and the Korean Patent Registration No. 0418114 known in the prior art when connecting the cut water pipe and A preventable device can be used to connect the cut water pipe and bury it.

Water supply cutoff device having a temporary water supply function and a water pipe repair method using the same according to the present invention can be applied to the water supply blocking device having a temporary water supply function described above and water pipe repair method using the same Rather, the embodiments may be configured by selectively combining all or part of the embodiments so that various modifications may be made.

1 is a view showing a state in which a water supply shutoff device having a temporary water supply function according to an embodiment of the present invention is connected to a cut water pipe.

FIG. 2A is an exploded cross-sectional view illustrating a state in which a water supply blocking unit constituting the water supply blocking device illustrated in FIG. 1 is mounted at an end of the water pipe.

FIG. 2B is a cross-sectional view illustrating a state in which the water supply blocking unit illustrated in FIG. 2A is mounted on the water pipe.

3A is a cross-sectional view illustrating a state in which an input / exit part constituting the water supply shutoff device shown in FIG. 1 is coupled to an end of the water pipe.

3B is a front view of the input / exit part shown in FIG. 3A.

3C is a plan view of the input / exit part shown in FIG. 3A.

Figure 4a is a view showing a state in which excavated the ground of any one area for water pipe maintenance work using a water supply blocking device having a temporary water supply function according to an embodiment of the present invention and cut the water pipe.

FIG. 4B is a view showing a state in which the water cutoff device having the temporary water supply function shown in FIG. 1 is mounted on the cut water pipe illustrated in FIG. 4A.

4C is a view showing a state in which a water supply breaker having a temporary water supply function shown in FIG. 1 is mounted on a water pipe of another region in which a cutting operation is performed.

5 is a view illustrating a state in which a scale removal apparatus is put into a cut water pipe to perform a scale removal operation.

6A is a view illustrating a state in which a coating operation for preventing generation of scale is performed on a descaled water pipe.

6B is a view showing a state in which a device for removing and preventing scale is connected to a descaled water pipe.

* Description of the main parts of the drawings *

100 ... water shutoff 110 ... water shutoff

111 ... pressure ring 112 ... water cut-off body

113 ... sealing member 114 ... fastening member

115 ... branch pipe 116 ... valve

117 .. Connection sockets 120 ...

121 ... Entry / Exit Body 122 ... Cover

123 ... anti-collision unit 124 ... fixing member

125 ... Pressing unit 126 ... Handle

127 ... hinge 128 ... locking member

Claims (11)

A water supply cut-off unit detachably coupled to an end of any one water pipe cut to cut off the water supply; It is configured to include; the input / exit portion is mounted to one end of the other water pipe cut The water supply blocking unit is configured to be connected to the branch pipe for the temporary water supply can be temporarily supplied from the water pipe combined with the water supply block, The input / discharge unit is a water supply shutoff device having a temporary water supply function, characterized in that the pressurizing portion for providing a supporting force to the water supply cutoff portion in the end region adjacent to the water supply cutoff portion is further provided. The method of claim 1, The water supply blocking portion and the pressure ring fitted to the water pipe; A water supply blocking unit body disposed to contact the cut end of the water pipe; A sealing member disposed between the pressure wheel and the water supply blocking unit main body to block leakage due to the adhesion between the pressure wheel and the water supply blocking unit main body; And a fastening member for providing a close contact force such that the pressure wheel and the water supply blocking unit main body are in close contact with each other. The water supply shutoff apparatus of claim 1, wherein a valve is further connected to the branch pipe, and a connection part is further mounted to the valve. According to claim 1, wherein the input / exit portion is formed in a structure in which the input / exit unit body is extended from the water pipe at one end of the other water pipe is cut, the opening in any one region of the input / exit section body Is provided, the water supply blocking device having a temporary water supply function, characterized in that the cover is mounted to open and close. The method of claim 4, wherein the input / exit unit body is further provided with a handle, the cover is hinged to the handle is mounted to open and close the other end of the cover is provided with the locking member in the opposite position Removably mounted to the handle is a water supply shutoff device having a temporary water supply function, characterized in that configured to be made. The water supply shutoff apparatus of claim 1, wherein the input / discharge unit further includes an anti-collision unit for preventing the scale removing device from colliding with the water blocking unit. The water supply interrupting device of claim 6, wherein the collision preventing part has a structure in which an elastic member is provided on a support part provided in the input / exit part main body or the cover. delete Digging ground in two regions and cutting water pipes in a state in which water supply is blocked; The water supply cut-off part according to any one of claims 1 to 7 is mounted at one end of the cut water supply-side water pipe, and any one of claims 1 to 7 is provided at an end of the water pipe in a region where water is not supplied. Mounting an inlet / outlet according to one of the claims; Starting temporary water supply through the branch pipe of the water supply blocking unit; Removing the scale inside the water pipe when passing the descaling device from one end of the cut water pipe to the other end; Blocking the temporary water supply and connecting the cut water pipes and burying the excavated ground; Water repair method using a water supply blocking device having a temporary water supply function comprising a. 10. The method of claim 9, further comprising coating the inside of the water pipe to prevent scale generation after descaling. 10. The method of claim 9, further comprising connecting a device for removing and preventing descaling.

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