KR101972703B1 - Fluid flow blocking device for pipe repair - Google Patents

Abstract

The present invention relates to a fluid flow blocking device for pipe repair and, more specifically, to a fluid flow blocking device for pipe repair, which can efficiently block fluid flow at a desired position of a pipe when the pipe, in which a fluid like oil or water flows, is moved or repaired or when the fluid flow is necessary to be blocked for the installation of a valve and branch pipe. The present invention provides the fluid flow blocking device for pipe repair, which blocks the inside of the pipe to block the fluid flow, comprising: a housing having a predetermined length; a pair of skid members held in the housing and provided to be able to slide in the direction of facing each other; a fixation member fixated on an inner wall of the pipe in association with the pair of skid members sliding in the direction of facing each other; a sealing actuation member configured to move in the radial direction of the pipe in association with the pair of skid members sliding in the direction of facing each other; a fluid flow blocking member configured to seal the inside of the pipe by movement of the sealing actuation member; and a fixation unit fixating the skid members at a position where the skid members are moved for a predetermined distance.

Description

[0001] FLUID FLOW BLOCKING DEVICE FOR PIPE REPAIR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid flow cutoff device for pipe maintenance, and more particularly, to a fluid flow cutoff device for pipe maintenance, To a fluid flow interrupting device for pipe maintenance which is capable of efficiently blocking fluid flow at a desired position of a pipe.

In general, fluids essential to human life, such as water and sewage, oil and gas, are being mechanically transported from a production site to a final destination through a pipe. For example, in the basement of the residential area, a number of water and sewage pipelines are buried.

However, there has been a problem in that when the above-mentioned piping is aged, or replacement work due to leakage, replacement, maintenance, or the like is required, a large area must be separated. That is, when the water pipe at a certain point is old, the main valve that blocks the flow of the old pipe into the area where the point is located is interrupted. Therefore, the entire wide area connected to the main valve must be separated for a long time, and the loss cost of the local residents is very large.

For example, FIG. 1 shows a range of stages for blocking fluid flow in a pipeline as in the conventional valve replacement operation. In order to replace a valve installed in the branch pipe 2, a valve Since the replacement work must be done, the single range is B, because the single range is A, but the c valve is to be shut off to replace the valve b. Furthermore, in order to block the valve c, which is directly fractionated in the main pipe 1, the main pipe itself must be cut off, so that the range of the number of pipes is increased exponentially as all the branching areas in the main pipe are separated.

Therefore, conventionally, there is a need to ensure that the range of the number of steps is minimized since a wide range of numbers of steps is involved in replacing the water pipe or the flow control valve.

To solve this problem, U.S. Patent Nos. 4,458,721 (Yie et al.) And 5,462,077 (Cohen et al.) Disclose devices for temporarily interrupting fluid flowing into a pipe using an inflatable device such as an airbag However, the conventional technique is applied to a small-sized piping such as a city gas pipe, and is formed to supply air to an expansion part provided at a front end to block the fluid by an expanded tube, And a spring is provided to solve the inconvenience of rotation of the joint part provided outside the expanding part. When the expanding part is inserted into the pipe, the insertion by the length of the expanding part In this case, when the fluid pressure of the pipe is high, The air pressure is raised to that there has been a disadvantage that disadvantage that the fastening of the inflation tube can be dismantled, the expansion of the inner tube by a scale damage.

As a result, the conventional fluid flow breaker has a limitation such that the airbag can be ruptured due to low durability of the airbag, and there is a limit to block the high-pressure fluid, and thus the fluid pressure is limited only to small-diameter piping .

(Document 1) Korean Patent No. 10-0874894 (Registration date: December 12, 2008) (Document 2) Korean Patent No. 10-0728766 (Registered Date: June 6, 2007) (Document 3) Korean Patent No. 10-1085573 (Registered on November 15, 2011) (Document 4) Korean Patent No. 10-0527765 (Registered Date: Nov. 10, 2005) (Document 5) United States Patent No. 4,458,721 (Publication date: Apr. 10, 1984) (Document 6) U.S. Patent No. 5,462,077 (Publication Date: October 31, 1995)

It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide an air conditioner which is capable of shutting down within a minimum range of a pipe body when piping, And to provide a fluid flow interrupting device for pipe maintenance that can completely block the inside of the tubular body.

According to an aspect of the present invention, there is provided a fluid flow cut-off device for pipe maintenance, comprising: a housing having a predetermined length; A pair of skid housings housed in the housing and slidable in directions facing each other, wherein a first sloped surface is formed at one end portion and a second sloped surface is formed at an outer side of the other sloped surface, absence; An elastic member provided on the housing to deflect the skid members in directions opposite to each other; Temporarily fixing each of the pair of skid members to the housing, and breaking the skid members when an external force is applied thereto; A fixing member provided on at least one of the pair of skid members and exposed to the outside of the housing at one side thereof and fixed to the inner wall of the pipe in association with sliding movement in a direction in which the pair of skid members face each other; The pair of skid members are provided between the first inclined surface and the second inclined surface facing each other, and one side thereof is exposed to the outside of the housing. When the pair of skid members are slidingly moved in the direction in which they oppose each other, A sealing operation member configured to move in a radial direction of the sealing member; A fluid flow blocking member provided on the outer periphery of the housing while covering the sealing operation member, for sealing the inside of the pipe by the movement of the sealing operation member; And fixing means for fixing the skid member at a position where the fixing member is broken by an external force to move the skid member by a predetermined distance.

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As can be clearly understood from the above description, the fluid flow cutoff device for pipe maintenance of the present invention is capable of shutting off the fluid flow at a desired position during maintenance of the piping, There is an effect of discomfort in the surrounding area and minimization of complaints.

In addition, it is possible to shut off the inside of the pipe (tube body) without complicated equipment, and it is possible to block the inside of the pipe more completely, thereby improving workability and reliability.

In addition, according to the achievement of various effects as described above, it is possible to greatly contribute to the development and activation of piping maintenance related technology, which is indispensable for transporting fluids essential for human life such as water supply and sewerage, oil, It is a useful invention.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic diagram showing the range of stages for fluid flow interruption in a pipeline, such as a conventional valve replacement operation.
FIG. 2 and FIG. 3 are a perspective view and a cross-sectional view showing the configuration of the fluid flow cutoff device for pipe maintenance according to the present invention.
FIG. 4 and FIG. 5 are cross-sectional views illustrating an implementation relationship of a fluid flow blocking device for pipe maintenance according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

Hereinafter, a fluid flow cutoff device for pipe maintenance according to a preferred embodiment of the present invention will be described.

A fluid flow cut-off device for pipe maintenance according to the present invention is a fluid flow cut-off device for pipe maintenance for blocking the inside of a pipe so that fluid flow inside a hollow pipe is blocked, comprising: a housing having a predetermined length; A pair of skid members housed in the housing and slidably disposed in directions facing each other; An elastic member provided on the housing to deflect the skid members toward each other; A temporary fixing member which temporarily fixes the pair of skid members to each other and is broken when an external force is applied; A fixing member provided on at least one of the pair of skid members and exposed to the outside of the housing at one side thereof and fixed to the inner wall of the pipe in association with sliding movement in a direction in which the pair of skid members face each other; A pair of skid members provided on an outer periphery of the pair of skid members and having one side exposed to the outside of the housing and adapted to move in a radial direction of the pipe in association with the sliding movement in a direction in which the pair of skid members face each other, absence; A fluid flow blocking member provided on an outer edge of the housing to cover the sealing operation member to seal the inside of the pipe by movement of the sealing operation member; And fixing means for fixing the skid member at a position where the fixing member is broken by an external force to move the skid member by a predetermined distance.

The housing is formed with a coupling hole to be coupled to a device insertion mechanism (for example, a bridge plug).

Further, the interlocking structure of the fixing member and the sealing operating member due to mutual sliding movement of the pair of skid members is formed by mutually opposing faces of the pair of skid members and the fixing member, and mutual opposing faces of the pair of skid members and the sealing operating members And the inclined surface formed so that the opposite surface is inclined to one side.

2 and 3 are a perspective view and a cross-sectional view showing a configuration of a fluid flow cutoff device for pipe maintenance according to the present invention, and FIGS. 4 and 5 are cross sectional views of a fluid flow cutoff device for pipe maintenance according to the present invention, 2 to 5, a fluid flow cut-off device for pipe maintenance according to a preferred embodiment of the present invention will be described in detail.

A fluid flow cut-off device for pipe maintenance according to the present invention is a fluid flow cut-off device for pipe maintenance for blocking the inside of a pipe so as to block fluid flow inside a hollow pipe, Likewise, a tubular housing 100 formed on one surface with a coupling hole 111 to be coupled to a device insertion mechanism (for example, a bridge plug) 10 and closed on the other side; A first skid member 210 accommodated in an upper side (hereinafter referred to as " upper side housing 110 ") of the housing 100; A first elastic member 310 provided between the upper housing 110 and one end of the first skid member 210 to elastically support the first skid member 210 in one direction (downward in the drawing) ; The first skid member 210 is provided between the upper housing 110 and the first skid member 210 and is configured to be fixed by temporarily fixing the first skid member 210, Member 410; A second skid member 210 provided on a lower side of the housing 100 (hereinafter referred to as a " lower side housing 120 ") and slidably coupled with the first skid member 210 in a direction facing each other, Member 220; The second skid member 220 is provided between the lower housing 120 and the other end of the second skid member 220 so that the second skid member 220 can be moved in the other direction A second elastic member 320 for elastically supporting the first elastic member 320 in a direction opposite to the first elastic member 320; The second skid member 220 or the second skid member 220 may be provided between the lower housing 120 and the lower housing 120 and the following base block 230, A second fixing member 420 configured to be fixed (temporarily fixed) and fractured by an external force having a predetermined size; The first skid member 210 and the second skid member 220 are fixed between the first skid member 210 and the second skid member 220 to temporarily fix the first skid member 210 and the second skid member 220, A third fixing member configured to be judged; Fixing members (510, 520) provided on the first and second skid members (210, 220) and fixed to the inner wall of the pipe in association with the relative movement of the first and second skid members (210, 220); The first and second skid members 210 and 220 and the fixing members 510 and 520 are configured to move the first and second skid members 210 and 220 such that the fixing members 510 and 520 A skid-fixing member interlocking means interlocked to be fixed to the inner wall; A sealing operating member provided at a connecting portion of the first skid member and the second skid member to move in a radial direction of the pipe in conjunction with relative movement of the first skid member and the second skid member, 610); A fluid flow blocking member 620 provided on the outer periphery of the housing 100 to cover the sealing operation member 610 and to seal the inside of the pipe by movement of the sealing operation member 610; The first and second skid members 210 and 220 and the sealing operation member 610 move the sealing operation member 610 by movement of the first and second skid members 210 and 220, A skid-shutting member interlocking means for interlocking the sealing operation member (610) to seal the inner pipe wall by the fluid flow blocking member (620); And fixing means for fixing the first and second skid members 210 and 220 to a position where the fixing members 410, 420 and 430 are broken by an external force to move the first and second skid members 210 and 220 by a predetermined distance.

The present invention may further include a base block 230 interposed between the second skid member 220 and the second elastic member 320. The base block 230 and the lower housing 120 may comprise the fixing means described in detail below.

The coupling hole 111 is formed in the upper housing 110 and a device insertion mechanism 10 such as a bridge plug is coupled to the coupling hole 111 to connect the fluid After moving to the point to be blocked, the bridge plug is removed from the fluid flow cut-out and removed at that point.

The housing 100 (the first housing 110 and the second housing 120) is formed with a circular section or a polygonal section. The housing 100 has an opening that can be exposed to the outside while the fixing members 510 and 520 and the sealing operation member 610 are interlocked with the sliding movement of the skid members 210 and 220, The skid members 210 and 220 are received.

Next, the first skid member 210 and the second skid member 220 are formed in a cylindrical shape having hollow through-passages 211 and 221 having a predetermined size passing through in the longitudinal direction.

Specifically, the first skid member 210 has a first hollow through-hole 211 penetrating in a longitudinal direction, and a part of the first hollow through-hole 211 is connected to a second skid member 210 (one end which is the upper end) of the movable member 210 in a slidable manner.

The second skid member 220 is divided into a small diameter portion 220a and a large diameter portion 220b having different diameters and a second hollow through passage 221 having a predetermined size passing through in the longitudinal direction. And a neck portion 220a is slidably positioned in the first hollow passage 211 of the first skid member 210. [

The outer skirts of the first skid member 210 and the second skid member 220 are provided with a component of the skid-fixing member interlocking means and a component of the skid-interrupting member interlocking means, which will be described in detail below, One component of the securing means is constructed. This will be described in detail later.

Next, the first elastic member 310 and the second elastic member 320 are made of, for example, elastic members in the form of a coil spring, as shown in the figure, The skid members 220 are not particularly limited as long as they are capable of deflecting the skid members 220 in a direction facing each other, and elastic members other than the coil spring can be applied.

The first fastening member 410, the second fastening member 420 and the third fastening member 430 are connected to a shear pin (shear pin) which is broken when a predetermined force (external acting force) shear pin).

The first fastening member 410, the second fastening member 420 and the third fastening member 430 are formed on opposite faces of the components provided with the fastening members 410 to 430, respectively Mounting grooves 411 to 413 are positioned and provided. The third fixing member 430 is formed between the base block 230 and the lower housing 220.

That is, the first fixing member 410 may be provided in the first mounting groove 411 formed on the opposing surface of the upper housing 110 and the first skid member 210, The member 420 may be provided in the second seating groove 412 formed on the opposing face of the lower housing 220 and the base block 230 and the third fixing member 430 may be provided on the first skid member 412. [ And a third seating groove 413 formed on the opposite side of the first hollow passageway 211 of the first skid member 210 and the outer edge of one end of the second skid member 220.

A plurality of fixing members 510 and 520 are provided along the outer edge of the first skid member 210 and are provided on the skid-fixing member interlocking means when sliding the first skid member 210 A plurality of the first fixed block body 510 and the second fixed skeleton member 220 are provided along the outer edge of the first skid member 220 and the second fixed skeleton member 220, And a second fixed block body 520 which rotates one side of the one end by a shaft (hinge axis P) by the skid-fixed member interlocking means when moving.

The outer surfaces of the first fixed block body 510 and the second fixed block body 520 are preferably composed of concavo-convex portions, preferably sawtooth type concavo-convex portions as shown in the figure.

As described above, when the first skid member 210 and the second skid member 220 are moved in the direction in which the first skid member 210 and the second fixed block member 520 face each other, The first fixed block body 510 and the second fixed block body 520 are rotated about the respective hinge axis by the skid-fixed member interlocking means and the first fixed block body 510 And the second fixed block body 520 are fixed in contact with the inner wall of the pipe at the outer side thereof and are maintained in the fixed state by the fixing means described later.

Next, the skid-fixing member interlocking means is provided with the first fixing member (first fixed block body) 510 and the second fixing member (second fixing member) 510 on the first skid member 210 and the second skid member 220, respectively. The first skid member 210 and the second skid member 220 are moved in the inner wall of the mounting groove 710. In this case, And the cross sectional shape of the first and second fixing members 510 and 520 corresponds to the cross sectional shape of the mounting groove 710 having the inclined surface 711, As shown in FIG.

The sealing operation member 610 is configured such that one side surface (the upper side in the figure) faces the end surface of the other end portion of the first skid member 210 and the other side surface (lower side surface in the drawing) (That is, a connecting portion between the small-diameter portion and the large-diameter portion) of the skid member 220.

As will be described later, the sealing operation member 610 has a trapezoidal or triangular cross-sectional shape.

The fluid flow blocking member 620 is provided in close contact with the outer periphery of the housing 100 while covering the sealing operation member 610 and is made of a soft material or a stretchable material such as rubber, As the sealing operation member 610 moves in the radial direction of the pipe, the fluid flow blocking member 620 extends in the radial direction of the pipe and seals the inner wall of the pipe.

The skid-shutting member interlocking means includes a first inclined surface 811 formed on an end surface of the other end of the first skid member 210 and inclined inwardly as it goes downward, A second inclined surface 812 formed on one side of the first skid member 811 and complementary to the first inclined surface 811 (i.e., formed so as to be inclined corresponding to the first inclined surface 811) A third inclined surface 813 formed at a connecting portion between the small diameter portion 220a and the large diameter portion 220b as an intermediate portion of the sealing operation member 620 and being inclined inwardly as it goes upward, And a fourth inclined surface 814 (that is, an inclined surface formed so as to be inclined corresponding to the third inclined surface 813), which is complementary to the third inclined surface 813.

When the first skid member 210 and the second skid member 220 move in the direction in which the first skid member 210 and the second skid member 220 are opposed to each other, the first inclined surface 811 and the third inclined surface 813, The sealing operation member 610 moves outward so as to be brought into close contact with the inner wall surface of the pipe, so that the fluid inside the pipe The flow is blocked.

Next, the fixing means includes a plurality of first fixing pins 912 provided on the outer edge of the first skid member 210 and supported so as to be protruded outward by a spring 911, A first fixing groove 913 formed in the inner edge of the first skid member 110 and inserted and fixed to the first fixing pin 912 when the first skid member 210 is moved a predetermined distance, A plurality of second fixing pins 914 provided on the outer edge of the base block 230 or on the outer edge of the base block 230 and supported so as to be projected outward by a spring 911, And a second fixing groove 195 into which the second fixing pin 914 is inserted when the second skid member 220 or the base block 230 is moved a predetermined distance.

In the drawing, the second fixing pin 914 is provided in the base block 230.

At this time, the distance between the first fixing pin 912 and the first fixing groove 913, the distance between the second fixing pin 914 and the second fixing groove 195 is set such that the fixing members 510 and 520 sufficiently rotate, (That is, the inner diameter of the pipe and the turning radius of the fixing member, and the moving distance of the sealing operation member to the outside, etc.), and the sealing operation member 610 is sufficiently moved so as to be strongly adhered to the inner wall of the pipe It is preferable that the distance is designed and formed in advance.

Such fixing means is provided on the side of the coupling portion 111 of the upper side housing 110 as an external acting force in a state where the first to third fixing portions are fixed temporarily by the fixing members 410 to 430 The first to third fixing members 410 to 430 may be broken so that the first and second skid members 210 and 220 are separated from the first and second skid members 210 and 220 by the first piping device and the second piping device, And the fixing pins 912 and 914 are inserted into and fixed to the corresponding fixing grooves 913 and 915, respectively.

Since the first skid member 210 and the second skid member 220 or the base block 230 are fixed to the respective housings 110 and 120 as described above, And the sealing operation member 610 are moved to stably and reliably maintain the sealing state of the fluid flow blocking member 620.

In summary, the fluid flow blocking device for pipe maintenance according to the present invention can block the flow of fluid at the position of a desired pipe at the time of maintenance of the pipe, so that the fluid can be blocked in a minimum range, It is possible to minimize the inconveniences and complaints of the pipes and to cut off the inside of the pipes, and it is possible to completely cut off the inside of the pipes without requiring complicated equipment, thereby improving the workability and the reliability of the blocking.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed in accordance with the following claims, and all technical ideas within the scope of the claims should be construed as being included in the scope of the present invention.

10: device insertion mechanism, 100: housing
110: upper side housing (first housing), 111:
120: lower housing (second housing), 210: first skid member
211, 221: first hollow passage, 220: second skid member
220a: small diameter portion, 220b: large diameter portion
230: base block, 310, 320: elastic member
410, 420, 430: fixing member (front end pin) 411, 412, 413: mounting groove
510, 520: fixing member (fixed block body), 610: sealing operating member
620: fluid flow blocking member, 710:
711: sloped surface, 811: first sloped surface
812: second inclined plane, 813: third inclined plane
814: fourth inclined surface, 911: spring
912, 914: fixing pin, 913, 915: fixing groove

Claims (11)

1. A fluid flow cut-off device for pipe maintenance for blocking fluid flow by blocking the inside of a pipe,
A housing having a predetermined length;
A pair of skid housings housed in the housing and slidable in directions facing each other, wherein a first sloped surface is formed at one end portion and a second sloped surface is formed at an outer side of the other sloped surface, absence;
An elastic member provided on the housing to deflect the skid members in directions opposite to each other;
Temporarily fixing each of the pair of skid members to the housing, and breaking the skid members when an external force is applied thereto;
A fixing member provided on at least one of the pair of skid members and exposed to the outside of the housing at one side thereof and fixed to the inner wall of the pipe in association with sliding movement in a direction in which the pair of skid members face each other;
The pair of skid members are provided between the first inclined surface and the second inclined surface facing each other, and one side thereof is exposed to the outside of the housing. When the pair of skid members are slidingly moved in the direction in which they oppose each other, A sealing operation member configured to move in a radial direction of the sealing member;
A fluid flow blocking member provided on the outer periphery of the housing while covering the sealing operation member, for sealing the inside of the pipe by the movement of the sealing operation member; And
And fixing means for fixing the skid member at a position where the fixing member is broken by an external acting force to move the skid member by a predetermined distance.
1. A fluid flow cut-off device for pipe maintenance for blocking fluid flow by blocking the inside of a pipe,
A tubular housing having a coupling part at one end and a closed end at the other end;
A first skid member provided on the housing and configured to be slidably coupled in a direction opposite to the first direction, the first skid member having a first inclined surface at an end thereof, and a second inclined surface facing the first inclined surface of the first skid member, A pair of skid members including a second skid member formed on the first skid member;
An elastic member provided on the housing to elastically support the first skid member and the second skid member in a direction opposite to each other;
A base block interposed between the second skid member and the elastic member provided on the housing;
A fixing member provided between the housing and each skid member and between the housing and the base block to fix the skid member and the base block and to be broken by an external force of a predetermined size;
A fixing member provided on at least one of the first skid member and the second skid member and fixed to an inner wall of the pipe in association with a sliding movement of the first skid member and the second skid member in a direction facing each other;
A skid-fixing member interlocking means constituted between at least one of the first and second skid members and a fixing member, the skid-fixing member interlocking means interlocking to fix the fixing member to the inner wall of the pipe by movement of at least one of the first and second skid members;
The pair of skid members are provided between the first inclined surface and the second inclined surface facing each other, and one side thereof is exposed to the outside of the housing. When the pair of skid members are slidingly moved in the direction in which they oppose each other, A sealing operation member configured to move in a radial direction of the sealing member;
A fluid flow blocking member provided on the outer periphery of the housing while covering the sealing operation member, for sealing the inside of the pipe by the movement of the sealing operation member;
Wherein the seal member is formed between the first and second skid members and the sealing operation member so that the sealing operation member is moved by movement of the first and second skid members to seal the pipe inner wall by the fluid flow blocking member, A skid-blocking member interlocking means for interlocking the skid-blocking member; And
And fixing means for fixing the first and second skid members to a position where the first and second skid members are moved by a predetermined distance when the fixing member is broken by an external acting force.
3. The method according to claim 1 or 2,
The pair of skid members and the fixing member are opposed to each other such that the fixing member and the sealing operating member are protruded outwardly and the pair of skid members and the sealing actuating member are inclined The fluid flow blocking device for pipe maintenance.
1. A fluid flow cut-off device for pipe maintenance for blocking fluid flow by blocking the inside of a pipe,
A tubular first housing having a coupling hole formed on one surface thereof and an other surface thereof opened;
A first skid member having one end received in the first housing;
A first elastic member provided between the first housing and one end of the first skid member for elastically supporting the first skid member in one direction;
A first fixing member provided between the first housing and the first skid member and configured to fix the first skid member and to be broken by an external force of a predetermined size;
A second skid member having one end slidably provided with respect to the first skid member;
A tubular second housing integrally formed with the first housing, the second housing having the other end of the second skid member received and the other side closed;
A second elastic member provided between the second housing and the other end of the second skid member for elastically supporting the second skid member in a direction opposite to the one direction;
A base block interposed between the second skid member and the second elastic member;
The second skid member or the second skid member or the second housing and the base block so as to fix the second skid member or the base block and to be broken by an external force of a predetermined size, A two-leg fixing member;
A third fixing member provided between the first skid member and the second skid member to fix the first skid member and the second skid member to each other and to be determined as an external force having a predetermined size;
Wherein the first skid member and the second skid member are fixed to the inner wall of the pipe in association with the movement of the first skid member and the second skid member, A plurality of fixing members;
A skid-fixing member interlocking means that is interposed between the first and second skid members and the fixing member, and interlocks the fixing member to be fixed to the inner wall of the pipe by movement of the first and second skid members;
Wherein one side is exposed from a plurality of openings formed in the first and second housings and provided on an outer edge of the first skid member and the second skid member, A sealing operation member configured to move in the radial direction of the pipe in association with the movement;
A fluid flow blocking member provided on the outer periphery of the housing while covering the sealing operation member, for sealing the inside of the pipe by the movement of the sealing operation member;
Wherein the seal member is moved between the first skid member and the second skid member by a movement of the first skid member and the second skid member to seal the inner wall of the pipe inner wall by the fluid flow blocking member, A skid-shutting member interlocking means configured to move the operating member in a pipe radial direction; And
And fixing means for fixing the first skid member and the second skid member to the respective housings at a position shifted by a predetermined distance.
5. The method of claim 4,
The first skid member is formed with a first hollow penetration passage of a predetermined size penetrating in the longitudinal direction, and a part of the first hollow penetration passage slidably accommodates a part of the following small-diameter portion of the second skid member And is formed as a receiving space,
Wherein the second skid member includes a second hollow penetration passage of a predetermined size penetrating in the longitudinal direction and is formed of a small diameter portion and a large diameter portion having different diameters and the small diameter portion is formed on the first hollow penetration passage of the first skid member Wherein the fluid flow restriction device is slidably positioned.
6. The method of claim 5,
Wherein each of the first to third fixing members comprises a front end pin,
The first fastening member is provided in a first seating groove formed on an opposite surface of the first housing and the first skid member,
Wherein the second fixing member is provided in a second mounting groove formed on an opposite surface of the second housing and the base block,
Wherein the third fixing member is provided in a third mounting groove formed on an opposite surface of the first hollow through-pass and the outer edge of one end of the small-diameter portion.
5. The method of claim 4,
Wherein the fixing member is provided along the outer edge of each of the first skid member and the second skid member, and the first skid member and the second skid member are engaged with each other by the skid- And a fixed block body which is rotated on one side of the fixed block body,
Wherein an outer surface of the stationary block body is formed with a sawtooth-shaped concave-convex portion.
5. The method of claim 4,
Wherein the sealing operation member is formed into a block body having a trapezoid or a triangle when viewed in section,
Wherein the first skid member and the second skid member facing the sealing operation member are formed in a shape corresponding to a sectional shape of the sealing operation member.
5. The method of claim 4,
Wherein the first skid member and the second skid member are respectively formed with a seating groove in which the first and second fixing members are respectively seated on the first skid member and the second skid member, The inner wall in the direction opposite to the moving direction of the member and the second skid member is formed as an inclined surface and the cross-sectional shapes of the first and second fixing members are correspondingly formed in the sectional shape of the mounting groove having the inclined surface Lt; / RTI >
Wherein the skid-shutting member interlocking means includes a first inclined surface formed at an end of the other end of the first skid member so as to be inclined inwardly as it goes downward, and a second inclined surface formed at one side of the sealing operation member and corresponding to the first inclined surface A third inclined surface formed on an outer edge of an intermediate portion of the second skid member and inclined inwardly toward an upward direction and a second inclined surface formed on the other surface of the sealing operation member and corresponding to the third inclined surface And a fourth inclined surface formed obliquely,
Wherein the sealing operation member is made of a flexible material.
5. The method of claim 4,
The fixing means includes a plurality of first fixing pins provided on an outer edge of the first skid member and supported so as to be protruded outward by a spring,
A first fixing groove formed on an inner edge of the first housing and having the first fixing pin inserted and fixed when the first skid member is moved a predetermined distance,
A plurality of second fixing pins provided on an outer edge of the second skid member or the base block and supported so as to be protruded outward by a spring,
And a second fixing groove formed on the inner side of the lower side of the second housing and in which the second fixing pin is inserted and fixed when the second skid member or the base block is moved a predetermined distance, Fluid flow blocking device.
11. The method of claim 10,
Wherein a distance between the first fixing pin and the first fixing groove in the movement direction of the first and second skid members and a distance between the second fixing pin and the second fixing groove are set so that the rotation angle of the fixing member, Is designed and formed in advance on the basis of a moving distance to the outside of the pipe.

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