KR20220099696A - Apparatus for replacementing of watercontrol valve without suspension of water supply and method for replacementing using them - Google Patents

Abstract

The present invention relates to a non-stop valve replacement device, and a non-stop valve replacement method using the same. More specifically, the device minimizes leakage without stopping water supply passing through a pipe and enables an aging or damaged valve to be easily replaced. According to the present invention, the device comprises: a connection pipe connected to a valve housing of the valve to be replaced installed in a branch pipe branched from a main pipe; an insertion pipe inserted into the connection pipe; an expansion member connected to one end of the insertion pipe and expanded by injection of fluid; and a fluid injection unit having a fluid injection hose separably connected to the expansion member and having a fluid blocking valve installed in the fluid injection hose.

Description

Apparatus for replacing non-stage valves and methods for replacing non-stage valves using the same

The present invention relates to an apparatus for replacing a non-stop valve and a method for replacing a non-stop valve using the same, and more particularly, it is possible to replace a deteriorated or damaged valve while minimizing water leakage without stopping the water supply of the water supply passing through the pipe. It relates to an apparatus for replacing a non-stage water valve and a method for replacing a non-stage water valve using the same.

In general, a water supply pipe consists of a large-diameter main pipe for transferring large-capacity water over a long distance, and a branch pipe branching from the main pipe and used for relatively short-distance transfer to supply water to buildings such as homes and offices.

In this way, a valve must be installed in the pipe body of the branch pipe where the branch is made so that the water supply can be interrupted, so that the work can be easily performed by the water supply when replacing the old water pipe or replacing the valve.

This conventional method has a disadvantage in that the range of the number of stages is wide as the operation is made after all the valves installed around the replacement point are closed in order to cut off the water supply pipe or the valve of the replacement point.

In addition, when the water supply is cut off as described above, there is a problem that not only causes inconvenience and loss to each home and various industrial facilities, but also brings inconvenience to the public life, and if it is operated under emergency measures, Civil complaints due to leaks and corrosion of valves and pipes are intensifying, making it difficult to stop water supply work.

In order to solve this problem, various methods of a non-stop water shutoff device for repairing a water supply pipe without shutting off the water supply have been developed.

To this end, the conventional valve replacement device for a water supply pipe is installed directly on an aging valve to be replaced, a sealing means is mounted on one end of a spindle that moves back and forth, and the expansion part of the sealing means is expanded by hydraulic pressure to block the water pipe, By alternately blocking the water supply pipe with a valve and a sealing means, it is possible to replace the old drain valve within the range where the water cutoff range is minimized.

However, the conventional valve replacement device for water supply pipe prevents the expansion part from being separated from the water supply pipe by water pressure by using a support after completely separating the expansion part and the hydraulic hose of the sealing means. In this case, since hydraulic oil may leak from the terminal side of the expansion part, there is a risk that the expansion part returns to its original size, leading to an accident in which the sealed state of the water pipe is released.

Republic of Korea Patent No. 10-0561191 (registered on March 8, 2006)

The present invention has been devised to solve the above problems, and it is an object of the present invention to provide an apparatus and a replacement method for a non-stop valve that minimizes the risk of fluid being discharged in the tube even when the tube and the fluid injection hose are separated do it with

In addition, an object of the present invention is to provide an apparatus and a replacement method for a non-stop valve replacement capable of ensuring watertightness.

In order to solve the above problems, the device for replacing a single-stage valve of the present invention includes a connecting pipe connected to the valve housing of the replacement target valve installed in a branch pipe branched from a main pipe, an insertion pipe inserted into the connecting pipe, and insertion It may include a fluid injection unit including an expansion member connected to one end of the tube and expanded by fluid injection, a fluid injection hose detachably connected to the expansion member, and a fluid shutoff valve installed on the fluid injection hose.

Here, the fluid injection unit may further include a connection terminal spaced apart from the fluid shutoff valve and installed on the fluid injection hose, and the connection terminal may connect or separate the fluid injection hose from the fluid shutoff valve. And, the fluid shutoff valve may be a throttle valve or a check valve.

In addition, according to the device for replacing a single-stage valve of the present invention, the connecting pipe includes a first opening having a size corresponding to the inner diameter of the valve housing and a second opening spaced apart from the first opening and having a size corresponding to the outer diameter of the insertion tube. may include Here, the connecting tube may further include a sealing member installed in the second opening and in contact with the insertion tube.

On the other hand, according to the device for replacing the non-stage valve of the present invention, the insertion tube may include an insertion body and a tapered protrusion extending obliquely from one end of the insertion body.

The expansion member may include a tube including an expansion part and an expansion protrusion extending from the expansion part, an expansion inhibiting member installed in the expansion part, a tapered magnetic plate installed in the expansion projection part and magnetically coupled to the tapered projection part, and a tapered type in the expansion projection part It may include a sealing member installed in contact with the magnetic plate.

The tapered magnetic plate may be installed using an adhesive on the expansion protrusion. The tapered magnetic plate may include either a permanent magnet or an electromagnet.

The expandable member may include a first contact part including a plurality of first protrusions installed on an outer surface of the expandable part and a second contact part including a plurality of second protrusions spaced apart from the first contact part.

The expansion-inhibiting member may include a first expansion-inhibiting part including a first rib installed on one side of the expandable member and a second expansion-inhibiting part including a second rib installed on the other side of the expandable member on the opposite side of the one side.

On the other hand, the non-stage valve replacement method according to an embodiment of the present invention includes the steps of connecting a connecting pipe to a replacement target valve housing of a replacement target valve installed in a branch pipe branched from a main pipe, and an insertion pipe to which an expansion member is connected at one end inserting into the connecting tube, moving the insertion tube to position the expandable member inside the branch tube, injecting the fluid into the expandable member through the fluid injection hose connected to the expandable member inside the insertion tube and inserting the branch tube into the branch tube The step of sealing the inside, closing the fluid shutoff valve connected through the connecting terminal disposed between the expandable member and the fluid injection hose as a medium, and separating the connecting terminal, then separating the fluid injection hose from the expansion member and separating the insertion tube and the expansion member step, replacing the replacement target valve with a new replacement valve, connecting the connecting tube to the new valve housing of the new replacement valve, inserting the insertion tube into the connection tube to fix the expansion member and the insertion tube to each other, and then insert the fluid injection hose is coupled to a connection terminal of the expandable member to discharge the fluid in the expandable member, and separating the expandable member from the branch pipe and closing a new replacement valve to separate the coupling pipe from the new valve housing.

According to the device and replacement method for non-stop valve replacement of the present invention, the valve can be replaced without shutting off the water supply pipe in use, and the fluid injected into the tube can be prevented from being discharged to the outside. By maintaining the expansion action, the sealing action can be continued.

In addition, according to the apparatus and replacement method for replacing a non-stage water valve of the present invention, it is possible to minimize the risk of water leakage by securing the watertightness of the connection part.

1 is a diagram schematically illustrating the configuration of a device for replacing a non-stage valve according to an embodiment of the present invention.
Figure 2 is an enlarged view of a part of the device for replacing the non-stage valve according to an embodiment of the present invention.
Figure 3 is an enlarged view showing a part of the device for replacing the non-stage valve according to an embodiment of the present invention.
4 is a flowchart illustrating a method for replacing a non-stage water valve according to an embodiment of the present invention.
5 to 11 are diagrams schematically illustrating a process flow for explaining a method for replacing a non-stage valve according to an embodiment of the present invention.

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms.

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

1 is a diagram schematically illustrating the configuration of an apparatus for replacing a non-stage valve according to an embodiment of the present invention.

The configuration and function of the device 100 for replacing the non-stage valve according to the present embodiment will be described with reference to FIG. 1 .

The device 100 for replacing a non-stage water valve according to this embodiment is installed in a water pipe and used for replacing a valve or a water pipe without stopping the water supply of the water supply, the connection pipe 10, the insertion pipe 20, It may include an expandable member 30 and a fluid injection unit 40 .

The connection pipe 10 may be connected to the replacement target valve housing 4 of the replacement target valve 3 installed in the branch pipe 2 branched from the main pipe 1 .

Here, the connection pipe 10 may be fixed to the replacement valve housing 4 by being bolted by a flange. At this time, the connection pipe 10 is a replacement target valve housing ( 4), but in this embodiment, the detailed description of the components is omitted and the main components required in the replacement work are mainly shown in the drawings.

The insertion tube 20 may be movably coupled to the inside of the connection tube 10 . The insertion tube 20 may move into the tube of the branch tube 2 or the main body 1 through the tube of the connection tube 10 .

The expandable member 30 may be connected to one end of the insertion tube 20 , and may seal the inside of the tube of the branch tube 2 while being expanded by fluid injection. As the expandable member 30 is moved by the insertion tube 20 , it may be positioned inside the branch tube 2 or the main tube 1 from the side of the connection tube 10 .

The fluid injection unit 40 is for injecting a fluid into the expansion member 30 , and may include a fluid injection hose 41 and a fluid shutoff valve 42 .

The fluid injection hose 41 may be detachably connected to the expandable member 30 . The fluid injection hose 41 may receive a fluid from a fluid supply means (not shown) located outside and inject the fluid into the expansion member 30 . At this time, the fluid used may be hydraulic oil or air, and may be hydraulic or pneumatic depending on the type of fluid used.

The fluid shutoff valve 42 may be connected to the fluid injection hose 41, and may block or allow the fluid passing through the fluid injection hose 41 as it is switched to a closed (locked) or open (open) state. After the fluid is injected into the expandable member 30 through the fluid injection hose 41 , the fluid shutoff valve 42 is closed to prevent the fluid injected into the expandable member 30 from escaping to the outside.

Such a fluid shutoff valve 42 may be a throttle valve or a check valve. According to a preferred embodiment of the present invention, in order to stably shut off the fluid, the fluid shutoff valve 42 may be a throttle valve capable of directly closing the passage by manual operation rather than a check valve.

As a result, according to the device for replacing the non-stage number valve according to the present embodiment, even if the connection between the expansion member 30 and the fluid injection hose 41 is cut off, the inside of the expansion member 30 is closed by the fluid shutoff valve 42 . Thus, it is possible to maintain the expandable member 30 in an expanded state.

Here, according to the present embodiment, the fluid injection unit 40 may include a connection terminal 43 .

The connection terminal 43 is spaced apart from the fluid shutoff valve 42 and may be installed in the fluid injection hose 41 .

In this embodiment, the connection terminal 43 may be provided to be spaced apart from the expansion member 30 rather than the fluid shutoff valve 42 , and the connection state with the fluid injection hose 41 is switched to a coupled or separated state. can do.

In this case, the connection terminal 43 may have a one-touch connection structure for easy connection and separation of the fluid injection hose 41 . That is, the fluid injection hose 41 can be easily connected or separated from the expansion member 30 and the fluid shutoff valve 42 by the connection terminal 43 .

As a result, according to this embodiment, it is possible to separate the fluid injection hose 41 that is structurally obstructed due to its length during the valve replacement operation, and the valve replacement operation can be performed in the separated state. At this time, even if the fluid injection hose 41 is separated from the expansion member 30 by the connection terminal 43, the fluid injection hose ( 41) is free to separate.

Figure 2 is an enlarged view showing a part of the device for replacing the non-stage valve according to an embodiment of the present invention.

Referring to FIG. 2 , the connecting pipe 10 according to the present embodiment may be connected to the replacement target valve housing 4 , and a first opening ( 111) and a second opening 112 spaced apart from the position opposite to the first opening 111 and formed with an outer diameter size of the insertion tube 20, that is, a size into which the insertion tube 20 can be inserted. have. At this time, the connection pipe 10 is to have different sizes of openings to distinguish the connection with the replacement valve housing 4 and the insertion role of the insertion tube 20 .

Here, the connection tube 10 may include a sealing member 113 installed in the second opening 112 , and may be formed to protrude in the direction of the insertion tube 20 so as to surround the outside of the sealing member 113 . .

The sealing member 113 is provided to be in contact with the insertion tube 20 at the second opening 112 into which the insertion tube 20 is inserted to maintain watertightness between the second opening 112 and the insertion tube 20 . .

In this way, the device 100 for replacing the non-stage number valve according to this embodiment secures the watertightness between the connection pipe 10 and the insertion pipe 20 by the sealing member 113, so that the replacement target valve housing 4 Even if water flows into the connecting pipe 10 to be connected, it is possible to prevent water leakage to the outside of the connecting pipe 10 .

Figure 3 is an enlarged view of a part of the device for replacing the non-stage valve according to an embodiment of the present invention.

Referring to FIG. 3 , one end of the insertion tube 20 according to the present embodiment may be formed to extend obliquely in the outer diameter direction toward the expandable member 30 . The insertion tube 20 may include an insertion body 21 and a tapered protrusion 22 extending obliquely from one end of the insertion body 21 .

The insert body 21 is formed in a tube type to have a predetermined length in the longitudinal direction from the expandable member 30 , and the fluid injection unit 40 may be disposed therein. The insertion body 21 may be connected to the tapered protrusion 22 in the direction of the expansion member 30 .

The tapered protrusion 22 may extend from the insertion body 21 in the disposition direction of the expandable member 30 , and protrude to be tapered to the outside to have a plate-shaped cross-section.

Here, the tapered protrusion 22 is configured in a dish shape rather than the end shape of the tube having the same shape as the insertion body 21 to accommodate a part of the outer surface of the expandable member 30, so that the expandable member 30 is inserted into the insertion tube 20 ) can be induced to be stably settled in the

Also, the insertion tube 20 may be coupled to the expandable member 30 through the tapered magnet plate 33 .

The expansion member 30 may include a tube 31 including an expansion part 311 and an expansion protrusion part 312 , an expansion inhibition member 32 , a tapered magnetic plate 33 , and a sealing member 34 . .

The tube 31 forms the exterior of the expandable member 30 and may be expanded to a predetermined size when a fluid is introduced therein. The tube 31 may include a soft expandable part 311 and an expansion protrusion 312 that extends from the expandable part 311 toward the insertion tube 20 and is opened. Here, on the outside of the expansion protrusion 312, a second expansion inhibiting part 322 and a magnet plate 33 to be described below are disposed, and the fluid injection part 40 is connected therein through a connection member 38. can

Here, the connecting member 38 is inserted into the opened inside of the expansion protrusion 312, and receives one end of the fluid injection unit 40 from the inside to connect the expansion protrusion 321 and the fluid injection unit 40. can

In addition, the connecting member 38 is connected to the expandable member 30 and the fluid through an O-ring (not shown) installed on at least one of an outer tube in contact with the expansion protrusion 312 and an inner tube in contact with the fluid injection portion 40 . It is possible to maintain airtightness and watertightness with at least one of the injection units 40 .

The expansion inhibiting member 32 may be installed on the outer surface of the expansion part 311 to induce the expansion part 311 to expand in the circumferential direction toward the pipe of the branch pipe 2 . That is, the expansion inhibiting member 32 has a predetermined thickness and serves as a reinforcing material of the expansion unit 311 in the longitudinal direction, and induces expansion of the expansion unit 311 in the width direction. In this case, the expansion inhibiting member 32 may be combined as a separate member, but may be formed in an integral shape with the expansion part 311 .

The expansion inhibiting member 32 reduces the widthwise expansion of the expansion part 311 and induces a circumferential expansion action. Accordingly, the tube 31 becomes an elliptical shape to shape the inner surface of the pipe line of the branch pipe 2 . It is possible to increase the sealing action and at the same time reduce the excessive use of the fluid.

The expansion-inhibiting member 32 may include a first expansion-inhibiting part 321 and a second expansion-inhibiting part 322 .

The first expansion inhibiting part 321 is installed on one side of the expandable member 30, that is, the expandable part 311 of the tube 31, and is composed of a first rib so as to have an approximately arc-shaped cross-section. can reduce the weight of

The second expansion inhibiting part 322 is installed on the other side of the expandable member 30 , that is, on the expansion protrusion 312 of the tube 31 , and is configured as a second rib to reduce the weight of the expandable member 30 . Here, the second rib may be formed in the form of a rib having the same spacing as the first rib or a rib having a different spacing.

The tapered magnetic plate 33 may be integrally formed with the second expansion inhibiting part 322 and coupled to the tapered protrusion 22 . Here, a gasket 36 having a conical cross-sectional area is further provided between the tapered protrusion 22 of the insertion tube 20 and the tapered magnet plate 33 to improve watertightness.

The magnet plate 33 is formed in a shape corresponding to the space between the tapered protrusion 22 of the insertion tube 20 and the expansion protrusion 312 of the tube 31 to the tapered protrusion 22 and the expansion protrusion 312. It can be stably attached. The magnet plate 33 may be coupled to the expansion protrusion 312 through an adhesive, and maintain watertightness between the expansion member 30 and the insertion tube 20 through the sealing member 34 to enhance watertightness.

For example, according to the present embodiment, the magnet plate 33 and the tapered protrusion 22 may be detachably attached to each other by magnetic force, and for this, either the magnet plate 33 or the tapered protrusion 22 has a magnet member. (not shown) may be included. Here, the magnet member may be installed on the mutually contacting surface or inner side of the magnet plate 33 or the tapered protrusion 22, and may include either a permanent magnet or an electromagnet.

Accordingly, in the apparatus 100 for replacing a non-stage valve according to the present embodiment, the expandable member 30 is provided in a structure detachable with respect to the insertion tube 20 , and the expandable member 30 is disposed in the pipe line of the branch pipe 2 . When the insertion tube 20 is expanded from the insertion tube 20, the expansion member 30 can be easily separated from the expansion member 30. can be easily combined.

Here, when the device 100 for replacing the non-stage valve according to the present embodiment is configured to connect the magnet plate 33 and the tapered protrusion 22 by the magnetic force of the magnet, in order to prevent arbitrary separation. The magnet plate 33 and the tapered protrusion 22 may be keyed and separated by a rotation operation of the tapered protrusion 22 .

For another example, the magnet plate 33 may be made of an electromagnet (not shown) capable of generating a magnetic field like a coil, and may generate a magnetic field by supplying a current to the electromagnet. Accordingly, the magnet plate 33 may be coupled to the tapered protrusion 22 .

As such, the device 100 for replacing the non-stage valve according to the present embodiment may connect or separate the expansion member 30 and the insertion tube 20 by electrically generating or releasing a magnetic field.

As another example, the magnet plate 33 may be coupled to the tapered protrusion 22 through a separate coupling member (not shown) such as a screw at the tapered portion in contact with the tapered protrusion 22 . Accordingly, the magnet plate 33 can maintain the watertightness between the tapered protrusion 22 by the coupling member and the sealing member 34 .

The sealing member 34 may be installed between the tapered protrusion 22 and the expansion protrusion 312 of the insertion tube 20 to seal the interface between the tapered protrusion 22 and the expansion protrusion 312 . For example, the sealing member 34 may be formed of an O-ring.

The expandable member 30 may further include a first contact part 351 and a second contact part 352 .

The first contact part 351 includes a plurality of first protrusions installed on the outer surface of the expansion part 311 . The plurality of first protrusions may be formed in a shape having different sizes or lengths, and may be arranged in a band shape having a predetermined width.

The second contact part 352 is spaced apart from the first contact part 351 on the outer surface of the expansion part 311 and includes a plurality of second protrusions. The plurality of second protrusions may be formed in a shape having different sizes or lengths, and may be arranged in a band shape having a predetermined width.

A surface portion 353 having a smooth surface may be formed in a space between the first and second contact portions 351 and 352 . At this time, the expansion part 311 can improve the adhesion of the branch pipe 2 to the inner surface of the conduit due to the structure of the first contact part 351 , the second contact part 352 , and the surface part 353 .

In particular, scale is generated on the inner surface of the pipe line of the branch pipe 2 due to aging and corrosion. By minimizing the gap with the inner surface of the pipeline in (2), it is possible to improve the sealing action in the pipeline.

In addition, the expansion member 30 according to the present embodiment may further include a second fluid shutoff valve (not shown).

The second fluid shutoff valve may be installed on one side of the expansion member 30 to which the fluid injection hose 41 is connected, and may be configured as a check valve. This second fluid shutoff valve can prevent the fluid injected into the expansion member 30 from being easily discharged.

According to the device 100 for replacing the non-stage valve according to the present embodiment configured as described above, after the expansion member 30 is expanded inside the pipe of the branch pipe 2 , the fluid injection hose 41 is removed from the expansion member 30 . Even if separated, the fluid injected into the expandable member 30 by the fluid shutoff valve 42 can be prevented from being discharged to the outside, so that the expansion action of the expandable member 30 by the fluid can be maintained.

Here, the device 100 for replacing the non-stage valve according to the present embodiment has a structure that is simply connected to the expansion member 30 through the connection terminal 43 , so that the coupling and separation operation of the fluid injection hose 41 is easy, so the valve It is possible to be freed from the limited movement by the fluid injection hose 41 during the replacement operation.

In addition, the device 100 for replacing the non-stage water valve according to the present embodiment can prevent water leakage by securing watertightness between the connecting pipe 10 and the insertion pipe 20 by the sealing member 113 .

Moreover, the device 100 for replacing the non-stage valve according to this embodiment has a valve before the expansion member 30 is expanded due to the close contact structure between the tapered protrusion 22 of the insertion tube 20 and the magnet plate 33 . It is possible to prevent constant inflow into the inside of the insertion tube 20 in an open state, and since it is attached and detached by magnetic force, it has the advantage of easy mutual separation.

In addition, according to the device 100 for replacing the non-stage valve according to the present embodiment, due to the first contact part 351 and the second contact part 352 formed in the expansion part 311, the inner surface of the branch pipe 2 It is possible to improve the sealing force by closely adhering.

And, the non-stage valve replacement device 100 according to the present embodiment can reduce the amount of fluid used by the expansion inhibiting member 32, thereby reducing the cost.

4 is a flowchart illustrating a method for replacing a non-stage water valve according to an embodiment of the present invention. And, Figures 5 to 11 are views schematically showing a process flow for explaining the non-stage valve replacement method according to an embodiment of the present invention.

Referring to Figure 4, the non-stage valve replacement method (S400) according to the present embodiment, the step of connecting the connecting pipe to the replacement target valve housing of the replacement target valve installed in the branch pipe branched from the main (S410), at one end Inserting the insertion tube to which the expandable member is connected into the connecting tube, moving the insertion tube to position the expandable member in the tube of the branch tube (S420), and expanding by a fluid injection hose connected to the expandable member through the insertion tube Injecting the fluid into the member and sealing the inside of the branch pipe (S430), locking the fluid shutoff valve connected between the expansion member and the fluid injection hose through the connection terminal and disconnecting the connection terminal, and then removing the fluid injection hose from the expansion member Separating and separating the insertion tube and the expansion member (S440), replacing the replacement target valve with a new replacement valve (S450), connecting the connecting tube to the new valve housing of the new replacement valve (S460), the connecting tube Inserting an insertion tube into the tube to fix the expansion member and the insertion tube together, coupling the fluid injection hose to the connection terminal of the expansion member to discharge the fluid in the expansion member (S470), and separating the expansion member from the branch pipe and installing a new replacement valve It may include a step (S480) of closing the connection pipe to separate the new valve housing.

A method of replacing the non-stage water valve ( S400 ) according to the present embodiment will be described in detail with reference to FIGS. 5 to 11 .

First, as shown in Figure 5, in step S410, the connection pipe 10 to the replacement target valve housing 4 of the replacement target valve 3 installed in the branch pipe 2 branched from the main pipe 1 Connect.

At this time, the connection pipe 10 may be connected to the replacement target valve housing 4 in a closed state of the replacement target valve 3 .

And, as shown in FIG. 6 , in step S420 , the insertion tube 20 connected to one end of the expandable member 30 is inserted into the connection tube 10 , and the insertion tube 20 is inserted into the branch tube 2 side. direction so that the expandable member 30 is positioned inside the pipe of the branch pipe 2 .

Next, as shown in FIG. 7 , in step S430 , the fluid is injected into the expandable member 30 by the fluid injection hose 41 connected to the expandable member 30 through the insertion tube 20 and expanded According to the expansion of the member 30, the inside of the pipe line of the branch pipe 2 is sealed.

Then, as shown in FIG. 8, in step S440, the fluid shutoff valve 42 connected between the expansion member 30 and the fluid injection hose 41 via the connection terminal 43 is closed and the connection terminal ( 43), the fluid injection hose 41 is separated from the expandable member 30, and the insertion tube 20 and the expandable member 30 are separated.

And, as shown in FIG. 9 , in step S450 , the replacement target valve 3 may be replaced with a new replacement valve 310 . Here, the operator inserts a separate insertion guide tube 6 into the insertion tube 20 to insert the fluid injection hose 41 connected to the expansion member 30 into the insertion guide tube 6, and insert The guide tube 6 may be removed from the insertion tube 20 .

Accordingly, the present invention guides the fluid injection hose 41 connected to the expandable member 30 through the insertion guide tube 6 so that the operator can easily insert the fluid injection hose 41 into the insertion tube 20 . can make it

Thereafter, as shown in FIG. 10 , in step S460 , the connection pipe 10 is connected to the new valve housing 320 of the new replacement valve 310 , and in step S470 , the connection pipe 10 is Insert the insertion tube 20 to fix the expandable member 30 and the insertion tube 20 to each other, and connect the fluid injection hose 41 to the connection terminal 43 of the expandable member 30 in the expandable member 30 . By discharging the fluid, the expandable member 30 returns to its original size. Here, the fluid injection part 40 connected to the expansion member 30 may be formed in a grid type so as to be easily inserted into the tapered protrusion 22 formed at one end of the insertion tube 20 .

Next, as shown in FIG. 11, in step S480, the expansion member 30 is moved together with the insertion tube 20 to separate it from the branch tube 2, and the new replacement valve 310 is closed to close the connection tube ( 330 can be separated from the new valve housing 320 , and then the valve replacement operation can be completed by connecting the existing connection pipe 10 to the new valve housing 320 of the new replacement valve 310 .

As such, according to the non-stage water valve replacement method ( S400 ) according to the present embodiment, it is possible to replace an aged or damaged valve while minimizing water leakage without stopping the water supply of the tap water.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those of ordinary skill in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are for explanation rather than limiting the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments.

Therefore, the protection scope of the present invention should be interpreted by the following claims rather than being limited by the above-described embodiments, and all technical ideas within the equivalent range should be interpreted as being included in the scope of the present invention.

100: non-stage valve replacement device 1: main
2: Branch pipe 3: Replacement target valve
4: valve housing 5: support member
6: insertion guide tube 10: connector
20: insertion tube 30: expandable member
40: fluid injection part

Claims (12)

a connection pipe connected to the valve housing of the replacement target valve installed in a branch pipe branched from the main pipe;
an insertion tube inserted into the connecting tube;
an expandable member connected to one end of the cannula and expanded by fluid injection; and
A non-stage valve replacement device including a fluid injection hose detachably connected to the expansion member and a fluid injection unit including a fluid shutoff valve installed on the fluid injection hose. The method of claim 1,
The fluid injection unit,
Further comprising a connection terminal spaced apart from the fluid shutoff valve is installed on the fluid injection hose,
The connection terminal is a device for replacing the non-stage water valve for connecting or separating the fluid injection hose and the fluid shutoff valve. The method of claim 1,
The fluid shutoff valve is a throttle valve or a check valve, a device for replacing a non-stage water valve. The method of claim 1,
The connector is
A device for replacing a single-stage valve including a first opening having a size corresponding to the inner diameter of the valve housing, and a second opening spaced apart from the first opening and having a size corresponding to the outer diameter of the insertion tube. 5. The method of claim 4,
The connector is
A non-stage valve replacement device further comprising a sealing member installed in the second opening and in contact with the insertion tube. The method of claim 1,
The insertion tube is
A device for replacing a single-stage valve comprising an insertion body and a tapered protrusion extending obliquely from one end of the insertion body. 7. The method of claim 6,
The expandable member,
A tube including an expansion part and an expansion protrusion extending from the expansion part, an expansion restraining member installed in the expansion part, a tapered magnetic plate installed in the expansion protrusion part and magnetically coupled to the tapered protrusion part, and the expansion protrusion part A device for replacing a non-stop valve including a sealing member installed in contact with the tapered magnetic plate. 8. The method of claim 7,
The tapered magnetic plate,
A device for replacing a non-stop valve installed using an adhesive on the expansion protrusion. 8. The method of claim 7,
The tapered magnetic plate,
A device for replacing a non-stop valve containing either a permanent magnet or an electromagnet. 8. The method of claim 7,
The expandable member,
A device for replacing a single-stage valve comprising: a first contact part including a plurality of first protrusions installed on the outer surface of the expansion part; and a second contact part spaced apart from the first contact part and including a plurality of second protrusions. 8. The method of claim 7,
The expansion inhibiting member,
a first expansion inhibiting unit including a first rib installed on one side of the expandable member; and
A device for replacing a non-stop valve including a second expansion inhibiting part comprising a second rib installed on the other side of the expansion member located opposite to the one side. connecting a connecting pipe to a replacement target valve housing of a replacement target valve installed in a branch pipe branched from the main pipe;
inserting an insertion tube to which an expandable member is connected at one end into the connecting tube, and moving the insertion tube to position the expandable member in the tube passage of the branch tube;
injecting a fluid into the expandable member through a fluid injection hose connected to the expandable member inside the insertion tube and sealing the inside of the branch tube;
After closing the fluid shutoff valve connected via a connection terminal disposed between the expandable member and the fluid injection hose, and disconnecting the connection terminal, the fluid injection hose is separated from the expandable member, and the insertion tube and the expandable member are separated. separating;
replacing the replacement target valve with a new replacement valve;
connecting the connecting pipe to the new valve housing of the new replacement valve;
inserting the insertion tube into the connection tube to fix the expandable member and the insertion tube to each other, and coupling the fluid injection hose to the connection terminal of the expandable member to discharge the fluid in the expandable member; and
and separating the expansion member from the branch pipe and closing the new replacement valve to separate the connecting pipe from the new valve housing.

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