KR102018172B1 - Airtight device that can be used without interrupting the water supply when replacing the water line valve with leak prevention function - Google Patents

Abstract

The present invention relates to an airtight device for hot tapping in replacement of a water distribution pipe valve. When replacing a valve of a water distribution pipe, a forward and backward mounting portion is disposed in the longitudinal direction of the inside of a body portion constituting the device to enable the entirety of the device to be floated in the pipe. An expansion portion expanded outward by compression is disposed in an outer circumference of the body portion to seal and close the inside of the pipe. Moreover, operation of positioning the mounting portion by moving the same forward and backward by using a rotational force of a single drive portion and operation of closing the inside of the pipe by compressing the expansion portion can be sequentially performed.

Description

Airtight device that can be used without interrupting the water supply when replacing the water line valve with leak prevention function}

The present invention, when the valve in the water pipe replacement, the device is floating and fixed in the replacement pipe, and at the same time equipped with an expansion part that can be crimped on the outer periphery of the body portion, has a leakage prevention function to seal the inside of the pipe while the expansion portion is compressed It relates to an airtight device for end watering when replacing a water line valve.

In general, the water pipe is provided with a valve at the end of the pipe connected to each water supply, there was an inconvenience to stop the entire water supply in order to replace the valve when the valve is aged or damaged.

However, when the water supply stage is made as described above, there is a problem that not only causes a huge loss of various industrial facilities, but also brings inconvenience to the people's lives, and when the emergency measures are operated, complaints are generated due to leakage. The corrosion of the valves and pipes is intensified, and it is difficult to order them by cutting water.

To solve this problem, various subwater valve replacement devices have been developed.

Conventional sub-water valve replacement device is provided with a separate bypass pipe, the water supply flows through the bypass pipe to replace the valve, or having an expandable water barrier, by injecting air into the water barrier The valve can be replaced in a state in which the water barrier portion expands and blocks the inside of the pipe to prevent leakage.

However, the conventional pipe replacement apparatus as described above has a problem in that a separate air compressor for injecting air into the water curtain part is required by allowing air to be injected into an elastic material such as rubber or silicone, which causes a pipe replacement. It was one of the reasons that the carrying and installation of the device became very cumbersome.

In addition, since the pipe replacement device is fixed in the pipeline only through expansion of such a water barrier, when the water pressure changes rapidly or a large water pressure occurs, the entire position of the pipe replacement device may not be shaken or floated. There was also a big problem that it could not perform a normal order function, such as a big life accident, breakage of valves and piping and leakage of water.

Republic of Korea Patent Registration No. 10-0793906 (2008.01.04 registration)

The present invention has been made to solve the above problems, an object of the present invention in the device having a degree function when replacing the valve in the water supply pipe, the whole device can be reliably floated in the pipeline installed the valve to be replaced The inner part of the device is configured so that the expansion part is provided on the outer periphery of the body part constituting the device, rather than swelling due to air or water, and the expansion part is formed according to the forward and backward motions of the first and second bodies. It is compressed and expanded to seal the flow path in the conduit, and the leakage preventing function of the device is configured such that the fixing operation in the conduit of the seating portion and the crimping operation of the expansion portion are sequentially performed by the rotational force transmitted from the single driving portion. It relates to an airtight device for end water when replacing a valve with a constant water pipe.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

The present invention as a means for solving the above problems,

In order to replace the on-off valve 30 installed in the first pipeline 10 and the second pipeline 20 in communication in the direction orthogonal to the interruption of the first pipeline 10, it is inserted into the second pipeline 20 The outer periphery of the rear end portion (b) of the first body (42) having a first hole (41) formed in the longitudinal direction therein but having a smaller diameter of the rear end portion (b) than the diameter of the front end portion (a) The second body 43 is fastened to the body portion 40 is installed to be capable of moving forward, backward in the longitudinal direction; A plurality of locking pins 58 are installed at the first hole 41 in the longitudinal direction so as to be able to move forward and backward and protrude outwardly and foldably at a predetermined angle α according to the forward and backward movements. It is formed, the plurality of engaging pins 58 is opened and in close contact with the inner wall of the first conduit (10) in communication with the second conduit (11), the seating portion 50 for floating the position of the body portion 40; The front end portion (a) of the first body 42 is installed on the outer periphery of the rear end portion (b) of the first body (42) at the front end of the second body (43) and advanced by the second body (43). Compressed between the second body 43 is expanded to the outside, the body portion 40 is in contact with the inner circumference of the second conduit 20, the expansion unit 60 for sealing the flow path; A driving part detachably connected to the seating part 50 at the rear end of the body part 40 and transmitting a rotational force for moving forward and backward and the second body 43 of the seating part 50 ( 70); Characterized in that comprises a

As described above, the present invention, when the valve is replaced, the expansion operation is compressed by the forward and backward operations of the first body and the second body is installed, not the expansion portion installed in the device is inflated by air or water. Thus, there is no need for an additional configuration for expansion, and there is an effect that can be surely sealed in the pipeline.

In addition, the present invention has the effect that the body portion in the pipeline for valve replacement can be securely and securely mounted inside the pipeline.

In addition, the present invention is a fixed operation in the pipeline of the seating portion and the compression operation of the expansion portion is made sequentially by the rotational force transmitted from a single drive, there is an effect that the operation is easy.

In addition, the present invention has the effect that it is easy to install and remove the pipe.

In addition, the present invention can be surely cut off the number of parts in the pipeline, there is an effect that the safety accident is prevented in advance due to the device is not floating on the pipeline.

1 is a view showing an embodiment of the airtight device for the end portion when replacing the water supply valve with a water leakage prevention function according to the present invention.
Figure 2 and Figure 3 is a view showing an embodiment of the operation of the airtight device for water in the case of replacing the water valve with a water leak prevention function according to the present invention.
Figure 4 is a view showing an embodiment of the operation for the airtightness of the airtight device for the water-receiving part when replacing the water supply valve with a leak-proof function according to the present invention.
Figure 5 is a view of an embodiment showing a state in which the engaging pin narrowed in accordance with the present invention inserting the seating portion in the conduit.
Figure 6 is a view showing an embodiment showing a state that can be fixed to the conduit by expanding the locking portion and then backwards the seating portion after inserting the seating portion in the conduit according to the present invention.
Figure 7 is a view of an embodiment showing a state in which the expansion end is compressed in the conduit, the watertight and hermetic conduit while the rear end of the body portion according to the invention is pulled to the front end.
8 and 9 are views of one embodiment showing the coupling structure between the mounting portion and the driving unit for transmitting the rotational force to the seating portion according to the present invention.
10 is a view showing a connecting rod and a push tube connected to the seating portion according to the present invention.

Before describing the various embodiments of the present invention in detail, it will be appreciated that the application is not limited to the details of construction and arrangement of components described in the following detailed description or illustrated in the drawings. The invention can be implemented and carried out in other embodiments and can be carried out in various ways. In addition, device or element orientation (e.g., "front", "back", "up", "down", "top", "bottom" The expressions and predicates used herein with respect to terms such as "," "left", "right", "lateral", etc. are used merely to simplify the description of the present invention, and related apparatus. Or it will be appreciated that the element does not simply indicate or mean that it should have a particular direction. Moreover, terms such as "first" and "second" are used in the specification and the appended claims for purposes of illustration and are not intended to indicate or mean the relative importance or spirit.

The present invention has the following features to achieve the above object.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Looking at an embodiment according to the present invention,
In order to replace the on-off valve 30 installed in the first pipeline 10 and the second pipeline 20 in communication in the direction orthogonal to the interruption of the first pipeline 10, it is inserted into the second pipeline 20 The outer periphery of the rear end portion (b) of the first body (42) having a first hole (41) formed in the longitudinal direction therein but having a smaller diameter of the rear end portion (b) than the diameter of the front end portion (a) The second body 43 is fastened to the body portion 40 is installed to be capable of moving forward, backward in the longitudinal direction; A plurality of locking pins 58 are installed at the first hole 41 in the longitudinal direction so as to be able to move forward and backward and protrude outwardly and foldably at a predetermined angle α according to the forward and backward movements. It is formed, the plurality of engaging pins 58 is opened and in close contact with the inner wall of the first conduit (10) in communication with the second conduit (20), the seating portion 50 for floating the position of the body portion 40; The front end portion (a) of the first body 42 is installed on the outer periphery of the rear end portion (b) of the first body (42) at the front end of the second body (43) and advanced by the second body (43). Compressed between the second body 43 is expanded to the outside, the body portion 40 is in contact with the inner circumference of the second conduit 20, the expansion unit 60 for sealing the flow path; A driving part detachably connected to the seating part 50 at the rear end of the body part 40 and transmitting a rotational force for moving forward and backward and the second body 43 of the seating part 50 ( 70); It is installed in the seating portion 50 by measuring the pressure of the inflating unit 60, by checking whether the inflating unit 60 is inflated to the inflation pressure of the preset range when the inflating unit 60 is inflated, to the inflating unit 60 Checking whether the flow path is closed due to the leak prevention sensor unit 80 to prevent the leakage occurs; Characterized in that comprises a.

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In addition, the seating portion 50 is rotatably fixed in the second body 43, the rear end of the rotational force transmission body 53 is connected to the driving unit 70 and the rotational force transmission; A predetermined depth is inserted into the first hole 41, and the rotational force transmission member 53 is screwed into the rear end, and is moved toward the longitudinal direction of the first hole 41 by the rotational direction of the rotational force transmission member 53. Adjusting shaft 56 being reversed; A plurality of engaging pins 58 hinged to one end of the adjustment shaft 56; An elastic member (59) connecting and connecting the ends of the plurality of locking pins (58) so that the plurality of locking pins (58) maintain the narrowed state of the initial preset angle (α); Characterized in that comprises a.

In addition, the control shaft 56 is reversed by the rotational force of the drive unit 70, the end of the plurality of locking pins 58 is in close contact with the inner wall of the first pipe line 10, the body portion 40 is second After the position is fixed in the conduit 20, the rotational force of the drive unit 70, instead of the control shaft 56 that can no longer be reversed, the second body 43, the rotational force transmission member 53 is fixed to the first body ( By advancing to 42) side, the expansion unit 60 is compressed, characterized in that the operation of the second pipe line 20 is closed by the expansion unit 60 is performed sequentially.

In addition, the seating portion 50 is inserted into the first conduit 10 in a state in which the plurality of locking pins 58 are narrowed to a predetermined angle α, and when the on / off valve 30 is replaced, The control shaft 56 is reversed by the rotational force transmitted from the driving unit 70, and the plurality of locking pins 58 are gradually opened and fixed while being in contact with the inner wall of the first pipe line 10. Upon completion of the replacement of 30, the adjusting shaft 56 is advanced by the rotational force transmitted from the driving unit 70, and the plurality of locking pins 58 are moved to a preset angle α by the elastic member 59. While returning to the original spaced apart from the inner wall of the first conduit 10, it is characterized in that the angle is narrowed so that it can be removed into the second conduit (11).

In addition, the drive unit 70 includes a main case 72 forming a through hole 72a in a longitudinal direction therein; A driving tube 73 inserted into and fixed to the through hole 72a; It is inserted into the drive tube 73, and is coupled to the outer periphery of the rotational force transmission body 53 in the seating portion 50 to transmit the rotational force, the adjustment shaft 56 in the seating portion 50 is rotated in the direction of rotation Push tube 74 to be forward, backward in the body portion 40 according to; A connection rod 75 inserted into the push tube 74 so that the seating portion 50 and the driving portion 70 are connected to each other and having one side connected to the other end of the adjustment shaft 56; Extension tube (77) which is detachably extended to the rear end of the push tube (74) so that the push tube (74) can be easily rotated in the drive tube (73), thereby rotating the push tube (74). It characterized by comprising;

In addition, the second body 43 is a first tube 44 of the form of a tube; An insertion part 45 formed at one side of the first pipe 44 to be inserted into the first pipe 44, and the second pipe 46 fastened to the first pipe 44 in a longitudinal direction; A plurality of elastic members 47 connecting the corresponding surfaces of the first and second pipes 44 and 46 to each other; Characterized in that consists of.

In addition, the leakage preventing sensor unit 80 is installed in the screw fastening hole 55 in the control shaft 56 of the rear end of the seating portion 50, the measurement pressure at the time of expansion of the expansion unit 60 of the predetermined range If it is lower than the expansion pressure, it is determined that the leak is not sealed in the flow path due to the expansion unit 60, when the valve is replaced with a water pipe having a water leakage prevention function to recover the entire watertight device for the water leak, so that it can be reused after repair It is characterized by.

Hereinafter, referring to FIGS. 1 to 10, in detail, the airtight device for cutting water when replacing a valve having a water leak prevention function according to a preferred embodiment of the present invention will be described in detail.

The watertight device for water connection when replacing the water supply valve having a water leakage prevention function according to the present invention is the first, second pipes (10, 20), the opening and closing valve 30, the body portion 40, the seating portion 50, the expansion portion 60, the driving unit 70, the leak prevention sensor unit 80.

The first conduit 10 and the second conduit 20 is a constant conduit, and the first and second conduits 10 and 20 in the present invention are connected in directions perpendicular to each other.

That is, in the direction in which the second pipe 20 is orthogonal to the interruption of the first pipe 10, it is a structure that is connected in communication such as '┸'.

The on-off valve 30 is installed on the above-described second conduit 20 (or on the first conduit 10), and seals or opens the inside of the second conduit 20 by using a disc. According to embodiments of the present disclosure, various valves may be targeted.

When the body portion 40 is to replace the on-off valve 30 on the second pipe line 20 described above, is inserted in the longitudinal direction inside the second pipe line 20, the first pipe line 10 and The front end of the second pipe line 20 connected (in the second pipe line 20, the front end of the on-off valve 30) is sealed and fixed.

The body portion 40 has a first hole 41 formed in the longitudinal direction therein, the second body 43 of the rear end is fastened to the outer periphery of the first body 42 of the front end, the front in the longitudinal direction It has a structure that can be installed backwards.

In addition, in the case of the second body 43 in which the first body 42 moves forward and backward, the first body 42 includes a first pipe 44, a second pipe 46, and an elastic member 47.

The first pipe (44) is in the form of a hollow inside the longitudinal direction, the second pipe 46 is also a hollow inside, the insertion portion 45 on one side to be inserted into the first pipe (44). ) Is formed to be fastened forward and backward in the longitudinal direction of the first pipe (44). (The diameter of the insertion portion 45 is to have a diameter relatively smaller than the diameter of the second tube 46.)

The elastic member 47 has a corresponding surface of the first and second pipes 44 and 46, that is, the first pipe 44 has a surface into which the second pipe 46 is fitted, and the second pipe 46 has an insertion portion ( 45) to the surface protruding, so that both ends of the elastic member 47 is fastened and connected to each other.

That is, the second body 43 is formed by a plurality of structures, so as not to cause damage due to various impacts, etc. generated during the use of the entire device, and connected by the elastic member 47 while having a structure capable of mutually disassembling each other. In this way, the connections between the two can be naturally opened and narrowed.

The seating portion 50 is mounted so that a predetermined length is inserted into the body portion 40 at the front end of the body portion 40 described above, the body portion 40 for sealing the inside of the second conduit 20 is changed, It is to be fixed and securely fixed and floating in a predetermined position (closed position) in the second conduit 20 without being shaken, damaged or moved by the high pressure of the high pressure.

That is, such a seating portion 50 is installed to be opened and folded at a predetermined angle α in front of the body portion 40 so that the body portion 40 is sealed in the second conduit 20. In order to insert in the longitudinal direction, such a seating portion 50 is inserted through the second pipe 20 to the first pipe 10 in communication with the second pipe 20, and then the first pipe (10) By being in close contact with the inner wall, the body portion 40 is floating and the position is seated when the on-off valve 30 is replaced.

To this end, the seating portion 50 includes a moving shaft 57, the locking pin 58, the elastic member 59.

The moving shaft 57 penetrates through the inside of the first hole 41 in the body part 40, and one end (front end) protrudes to the outside, and the other end located in the first hole 41 is a driving part to be described later ( 70) is connected to the power transmission so that it can be installed forward and backward. This moving shaft 57 is composed of a rotational force transmission body 53 and the control shaft 56 again.

The rotational force transmission body 53 is rotatably installed in the first hole 41 of the body portion 40, more specifically, the first tube 44 of the second body 43, and the drive unit 70 to be described later Correspondingly connected, the rotational force can be transmitted from the drive unit 70, one end of which consists of a threaded portion 51 having a thread formed on the outer circumference and a rear end of the head 52 connected to the drive unit 70. At the end (rear end) of the head 52, a screw groove 52a having a shape that is recessed inwardly is formed, and the connecting rod 75 of the driving unit 70, which will be described later, corresponds to the screw groove 52a. It is fastened to transmit the rotational force, the fixing plate 54 is installed on the outer periphery of the head portion 52, the fixing plate 54 is a first hole (more in detail the first tube) the rotational force transmission body 53 (44) It is to be able to rotate in a fixed position in a fixed position inside.

The control shaft 56 is inserted and mounted in a predetermined depth in the first hole 41, the screw fastening hole 55 for screwing the rotational force transmission body 53 is formed at the rear end, the rotational force transmission body 53 It rotates forward and backward by the longitudinal direction of the 1st hole 41. FIG.

In other words, when the rotational force transmission body 53 receives the rotational force from the driving unit 70 and rotates in the first hole 41, the rotational force transmission body 53 and the rear end are screwed and connected to the adjustment shaft 56. The reverse or backward operation is performed in the form of being inserted into the first hole 41, or in the form of protruding a predetermined length to the outside of the first hole 41.

Of course, the driving unit 70 to be described later is detachably coupled to the rear end of the body portion 40, so that the rotational force transmission member 53 can transmit the rotational force, it is not limited to a certain configuration.

The locking pin 58 is a pin that is hinged to the front end of the above-described moving shaft 57 (more specifically, the adjusting shaft 56), such a plurality of locking pins 58 of the first moving shaft 57 It has a form narrowed toward the front end portion at a predetermined angle α such as '<'.

Both ends of the elastic member 59 (ex: a spring, etc.) are respectively fastened to the outer circumferential surface of the plurality of locking pins 58 described above, so that the plurality of locking pins 58 are initially set at an angle α (elastic member 59). ) Or tension / compression so as to maintain the narrowed state of each other when the plurality of locking pins 58 are in contact with the outer periphery of the front end of the moving shaft 57).

Thus, the seating portion 50 is first inserted into the first conduit 10 in a state where the plurality of locking pins 58 are narrowed to a predetermined angle α, and when the on / off valve 30 is replaced, The moving shaft 57 is reversed by the driving unit 70 so that the end of the plurality of locking pins 58 is in contact with the inner wall of the first pipe line 10, and is gradually opened and fixed. When the replacement of the 30 is completed, the moving shaft 57 is advanced by the driving unit 70, and the plurality of locking pins 58 are also in close contact with the inner wall of the first pipe line 10, and gradually move away from the inner wall. The locking pin 58 is coupled to the front end of the body part 40 as the elastic member 59 returns to the preset angle α and is completely spaced apart from the inner wall of the first pipe line 10. As it is possible to remove (can be removed) to the outside in the second pipe (20). (The diameter of the second conduit 20 can be passed when the plurality of locking pins 58 are narrowed to the first preset angle α, but the plurality of locking pins 58 are opened close to 180 degrees. In this case it has a diameter that cannot pass.)

Thus, the body portion 40 is in communication with the second conduit 20, in addition to the expansion unit 60 to be described later to be fixed to swell in the inner circumference of the second conduit 20 for replacement of the on-off valve 30. The locking pins 58 caught on the inner wall of the conduit 10 allow the front end of the body 40 to be safely and reliably floated.

The expansion part 60 is formed in a ring shape, is installed on the outer periphery of the body portion 40 between the first and second bodies 42 and 43 described above, and is compressed by the second body 43 to be advanced to the outside. By expanding to the body portion 40 is in contact with the inner circumference of the second conduit 20 is to operate to seal the flow path.

That is, when the opening valve 30 is first replaced, the adjusting shaft 56 is advanced to make the locking pin 58 narrow, and then the body portion 40 is inserted into the second conduit 20. Thereafter, the locking pin 58 adjusts the position of the entire device to the inner wall of the first conduit 10 in communication with the second conduit 20, the rotational force of the drive unit 70 to be described later the control shaft 56 Reverse by Accordingly, the control shaft 56 is backward, while the end of the plurality of engaging pins 58 are in close contact with the inner wall of the first conduit 10, and if the control shaft 56 is retracted while being in close contact, the locking pin to the maximum. 58 is opened in close contact with the wall. As a result, the body 40 is fixed to the conduit. (The driving unit 70 to be described later, which reverses the control shaft 56, pulls the control shaft 56 in a state of being fixed on the second conduit 20 in advance. will be.)

After the body portion 40 is fixed in the second conduit 20 as described above, if the control shaft 56 is continuously retracted, the locking pins 58 formed at the end of the control shaft 56 are removed. Since it is fixed in close contact with the inner wall by one pipe 10, the adjusting shaft 56 is no longer reversed. Accordingly, the second body 43 (first, second pipes 44, 46) provided with the rotational force transmission body 53 receiving the rotational force to reverse the adjustment shaft 56 is pulled toward the first body 42. Go forward. As a result, the rotation force of the driving unit 70 moves forward the second body 43 in which the rotation force transmission body 53 is fixed to the first body 42 instead of the adjustment shaft 56 which is no longer reversed, and the expansion unit As the 60 is compressed, the operation of the second conduit 20 in which the flow path is sealed by the expansion part 60 is sequentially performed.

The driving unit 70 is connected to the rear end of the seating unit 50 described above, and more specifically, to the other end of the first hole 41 of the body unit 40 to be separated / coupled, and the seating unit 50. ) Is to be built in the longitudinal direction inside or to project outward.

In addition, a flange 71 is formed at the front end of the driving unit 70 so that it can be connected and fixed to the other flange of the replacement valve or the replacement valve.

The drive unit 70 is composed of a main case 72, a drive tube 73, a push tube 74, the connecting rod 75.

The main case 72 is a tubular body forming a through hole 72a in the longitudinal direction therein.

The drive tube (73) is a hollow body, which is inserted and mounted in the longitudinal direction inside the main case (72) described above, both ends of which protrude to both ends of the main case (72), and the main case (72). Toward the longitudinal direction of, in the inserted state, through the various embodiments, such as a drive device (pinion, 76) has a structure capable of moving forward and backward.

To this end, in the present invention, in one embodiment, the rack 73 'is formed on the outer circumference of the drive tube 73, and the pinion 76 geared with the rack 73' is fastened with the rack 73 '. Formed in the main case 72 so that, like the rack and pinion, as the pinion 76 rotates, the drive tube 73 corresponding to the rack 73 'is moved forward and backward in the main case 72 It is to have. Of course, if the drive tube 73 is a configuration that can be moved forward / backward in the main case 72, the rack and pinion can be used in various ways.

The push tube 74 is inserted into the drive tube 73 described above, which is inserted into the above-described body portion 40 (more specifically, the first tube 44 of the second body 43). It is fastened to the outer circumference of the other end of the rotational force transmission body 53 to transmit the rotational force, so that the adjustment shaft 56 in the first hole 41 according to the rotational direction of the rotational force transmission body 53, forward and backward. Of course, in order for the rotational force to be transmitted, the outer circumference of the other end of the rotational force transmission body 53 has a polygonal cross section, and it will be natural that the other end inner circumference of the push tube 74 fitted to the outer circumference also has a polygonal cross section. . Accordingly, as the push tube 74 rotates, the rotational force transmission member 53 rotates by the rotational force, and the rotation of the rotational force transmission body 53 causes the control shaft 56 to move forward and backward in the longitudinal direction. Of course, the forward and backward of the adjustment shaft 56 is naturally dependent on the rotational force direction (clockwise or counterclockwise) of the push tube (74). In addition, in the case of the push tube 74, the length is similar to the length of the drive tube 73, the push tube 74 is detachably extended and connected to the rear end of the push tube 74, the push tube 74 is In order to be easily rotated in the drive tube 73, it may be further provided with an extension tube 77 having a rotary knob at the end for rotating the push tube (74).

When the connecting rod 75 is to move forward and backward through the control shaft 56 through the push tube 74, the seating portion 50 and the driving unit 70 is connected to each other, the push tube 74 is fixed One side is inserted into the inside is connected to the other end of the rotational force transmission member (53). In other words, in order to open and narrow the seating part 50, the adjusting shaft 56 needs to be moved forward and backward. For this purpose, the seating part having the configuration of the rotational force transmission body 53 receiving the rotational force of the driving part 70 firstly ( Since the rotational force transmitted from the push tube 74 of the driving unit 70 is transmitted only when the driving unit 70 is connected to the driving unit 70, the seating unit 50 (or the body unit 40) and the detachable driving unit 70 are provided. In order to connect to each other in the seating portion 50, by inserting the connecting rod 75 inside the push tube 74, the mounting portion 50 and the driving unit 70 is connected to each other through the connecting rod (75).

Of course, one end of the connecting rod 75 is formed with a thread, the length should have a length projecting to the outside of the other end of the driving unit 70 so that the connecting rod 75 can be rotated in the state inserted into the driving unit 70. something to do. In addition, the screw groove 52a corresponding to one end of the connecting rod 75 is formed at the inner circumferential edge of the other end of the rotational force transmission body 53 as described above.

As a result, the connecting rod 75 corresponds to the rotational force transmission member 53 and is screwed, so that the seating portion 50 and the driving unit 70 are connected (at this time, even one end of the push tube 74 is the rotational force transmission member 53). The other end is inserted into the outer periphery.), When the push tube 74 is rotated, the rotational force transmission body 53 connected to the push tube 74 is rotated, and the adjusting shaft 56 is rotated according to the rotation direction of the push tube 74. ) Is going forward and backward. When the front and rear of the drive tube 73 is to use the seating portion 50, to project the seating portion 50 to the front end of the driving unit 70, or after the valve replacement, to remove the entire equipment In order to retract the seating part 50, the driving part 70 is used to be inserted into the double tube shape.

The leakage preventing sensor unit 80 is installed in the seating unit 50 described above to measure the pressure of the inflating unit 60, so that when the inflating unit 60 is inflated, the measured pressure is inflated to an inflating pressure of a predetermined range. By checking the, it is to check whether the flow path is sealed due to the expansion unit 60, to prevent the occurrence of leakage.

More specifically, it is installed on the inner peripheral portion of the screwing hole 55 in the control shaft 56 at the rear end of the seating part 50, and is configured to be connected to measure the pressure inside the expansion part 60.

The measurement signal of the leak prevention sensor unit 80 transmits a signal to a separate control unit 90 installed on the ground, but when the expansion pressure of the expansion unit 60 is lower than the expansion pressure of the preset range, expansion It is determined that the leak is not sealed in the flow path due to the unit 60, when the valve is replaced with a water pipe having a water leakage prevention function to recover the entire airtight device for the bottom part, it is to be reused after repair.

Of course, the leak-proof sensor unit 80 is installed in this way is installed in the screw fastening hole 55, the rotational force transmission body 53 is moved forward, backward in the screw fastening hole 55 in the longitudinal direction inside the screw fastening hole 55 Of course, it should be installed in a place where is not touched.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Various modifications and changes may be made without departing from the scope of the appended claims.

10: first duct 20: second duct
30: on-off valve 40: body
41: first hole 42: first body
43: second body 44: first tube
45: insertion portion 46: the second tube
47: elastic member 50: seating portion
51: thread 52: head
52a: thread groove 53: torque transmission body
54: fixing plate 55: screw tightening hole
56: adjusting shaft 57: moving shaft
58: locking pin 59: elastic member
60: expansion portion 70: drive portion
71: flange 72: main case
72a: through hole 73: drive tube
73 ': rack 74: push tube
75: connecting rod 76: pinion
77: extension pipe 80: leak prevention sensor
90: control unit

Claims (7)

In order to replace the on-off valve 30 installed in the first pipeline 10 and the second pipeline 20 in communication in the direction orthogonal to the interruption of the first pipeline 10, it is inserted into the second pipeline 20 ,
On the outer circumference of the rear end portion (b) of the first body 42, the first hole 41 is formed in the longitudinal direction, and the diameter of the rear end portion (b) is smaller than the diameter of the front end portion (a). A second body 43 is fastened, the body portion 40 is installed so as to be forward, backward in the longitudinal direction;
A plurality of locking pins 58 are installed at the first hole 41 in the longitudinal direction so as to be able to move forward and backward and protrude outwardly and foldably at a predetermined angle α according to the forward and backward movements. It is formed, the plurality of engaging pins 58 is opened and in close contact with the inner wall of the first conduit (10) in communication with the second conduit (20), the seating portion 50 for floating the position of the body portion 40;
The front end portion (a) of the first body 42 is installed on the outer periphery of the rear end portion (b) of the first body (42) at the front end of the second body (43) and advanced by the second body (43). Compressed between the second body 43 is expanded to the outside, the body portion 40 is in contact with the inner circumference of the second conduit 20, the expansion unit 60 for sealing the flow path;
A driving part detachably connected to the seating part 50 at the rear end of the body part 40 and transmitting a rotational force for moving forward and backward and the second body 43 of the seating part 50 ( 70);
It is installed in the seating portion 50 by measuring the pressure of the inflating unit 60, by checking whether the inflating unit 60 is inflated to the inflation pressure of the preset range when the inflating unit 60 inflates, to the inflating unit 60 It is made, including; leak check sensor unit 80 to check whether the flow path is sealed, to prevent the occurrence of leakage;
The seating portion 50 is
A rotational force transmission body 53 rotatably installed in the second body 43 and having a rear end connected to the driving unit 70 so as to transmit rotational force;
A predetermined depth is inserted into the first hole 41, and the rotational force transmission member 53 is screwed into the rear end, and is moved toward the longitudinal direction of the first hole 41 by the rotational direction of the rotational force transmission member 53. Adjusting shaft 56 being reversed;
A plurality of engaging pins 58 hinged to one end of the adjustment shaft 56;
An elastic member (59) connecting and connecting the ends of the plurality of locking pins (58) so that the plurality of locking pins (58) maintain the narrowed state of the initial preset angle (α);
Airtight device for the end portion when replacing the water valve with a water leak prevention function characterized in that it comprises a.
The method of claim 1,
The control shaft 56 is reversed by the rotational force of the drive unit 70, the end of the plurality of locking pins 58 is in close contact with the inner wall of the first pipe line 10, the body portion 40 is the second pipe ( 20) after being fixed within
The rotational force of the drive unit 70 moves forward the second body 43, on which the rotational force transmission body 53 is fixed, to the first body 42, instead of the adjustment shaft 56, which is no longer backward, and the expansion unit 60 The second pipe passage 20 while being pressed), the sealing operation by the water pipe when the valve replacement of the water supply valve with a water leakage prevention function, characterized in that the operation is made in sequence is sealed by the expansion unit 60 in sequence.
The method of claim 1,
The seating portion 50 is
While the plurality of locking pins 58 are narrowed to a predetermined angle α, the locking pins 58 are inserted into the first pipe line 10,
When the on-off valve 30 is replaced,
The adjusting shaft 56 is reversed by the rotational force transmitted from the driving unit 70, and the plurality of locking pins 58 are gradually opened and fixed in contact with the inner wall of the first pipe line 10.
When the on-off valve 30 is replaced,
The adjusting shaft 56 is advanced by the rotational force transmitted from the driving unit 70, and the plurality of locking pins 58 are returned to the preset angle α by the elastic member 59, and the first pipe line ( 10) A watertight device for water leakage when replacing a water supply valve having a water leakage preventing function, which is spaced apart from an inner wall and narrowed so that an angle can be removed into the second pipe 20.
The method of claim 1,
The driving unit 70
A main case 72 forming a through hole 72a in the longitudinal direction therein;
A driving tube 73 inserted into and fixed to the through hole 72a;
It is inserted into the drive tube 73, and is coupled to the outer periphery of the rotational force transmission body 53 in the seating portion 50 to transmit the rotational force, the adjustment shaft 56 in the seating portion 50 is rotated in the direction of rotation Push tube 74 to be forward, backward in the body portion 40 according to;
A connection rod 75 inserted into the push tube 74 so that the seating portion 50 and the driving portion 70 are connected to each other and having one side connected to the other end of the adjustment shaft 56;
Extension tube (77) which is detachably extended to the rear end of the push tube (74) so that the push tube (74) can be easily rotated in the drive tube (73), thereby rotating the push tube (74). ;
Airtight device for the end portion when replacing the water supply valve with a water leakage prevention function characterized in that it comprises a.
The method of claim 1,
The second body 43 is
A first tube 44 in the form of a tube;
An insertion part 45 formed at one side of the first pipe 44 to be inserted into the first pipe 44, and the second pipe 46 fastened to the first pipe 44 in a longitudinal direction;
A plurality of elastic members 47 connecting the corresponding surfaces of the first and second pipes 44 and 46 to each other;
Airtight device for the endless water at the time of valve replacement of the water pipe having a water leakage prevention function, characterized in that consisting of.
The method of claim 1,
The leak prevention sensor unit 80
The expansion unit 60 is installed in the screw fastening hole 55 in the control shaft 56 at the rear end of the seating unit 50, and the measurement pressure at the time of expansion of the expansion unit 60 is lower than the expansion pressure in the preset range. It is judged that water leaks because it is not sealed in the flow path due to the oil leakage, and the whole water leaking device for water supply when the valve is replaced with water is recovered, and it is reused after repairing. Airtight device.
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