KR102544685B1 - Tube reversing device for conduit repair using air pocket - Google Patents

Abstract

It relates to a tube reversing device for pipe repair using air pockets, which can effectively block the outflow of air pressure by air pockets without using any leak pressure blocking liquid when the tube is inverted and injected into the underground pipe using air pressure. that made it possible
The present invention, the pressing member is installed along one side of the through-hole of the inner bulkhead of the body casing to enable close contact with the tube passing through the through-hole from one side; an air pocket installed along the other side of the through-hole of the inner bulkhead so as to face the pressure member and pressurizing the tube passing through the through-hole by being in close contact with the pressure member at both sides while expanding when air is injected; and an air inlet installed near the outlet inside the main body casing to inject air and provide air pressure for inversion and expansion of the tube; including, when the air pocket expands, the tube passing through the through hole is interposed between them. While the air pocket and the pressing member are in close contact with each other, the rearward movement of the tube is allowed, but the air pressure provided inside the main body casing for inversion and expansion of the tube is prevented from leaking out through the through hole of the inner bulkhead. characterized by

Description

Tube reversing device for conduit repair using air pocket}

The present invention relates to a tube reversing device for pipe repair, and in particular, when a tube is inverted and introduced into an underground pipe using air pressure, it is possible to effectively block the outflow of air pressure without using any liquid for blocking leak pressure. It relates to a tube inverting device for repair.

In general, a tube inverting device is a device for repairing old pipelines buried underground, such as water supply and sewer pipes and industrial piping for gas, electricity, and communication, while reversing a tube impregnated with a curable resin while inside the pipeline. After the tube is inflated and pressed against the inner wall of the pipe, a series of operations are performed to harden the curable resin and bring it into close contact with the inner wall of the pipe.

In this regard, the conventional tube reversing device disclosed in Korean Patent Registration No. 10-0822336 provides a roller for guiding the tube, and a fluid inlet and outlet for supplying and discharging fluid to and from the inside of the tube by providing an enclosed space. It has a main body in which the inlet and outlet of the tube are formed.

In the conventional tube inverting device having such a configuration, the end of the tube is reversed and transferred to fill the inside of the tube in a state where it is moved and installed toward the pipe line, and the fluid supply device supplies high-temperature fluid to the inside of the tube to A pre-impregnated thermosetting resin was cured on the outer surface of the tube in contact with the inner circumferential surface. After that, when the thermosetting resin was completed, a series of pipe repair work could be completed by recovering the tube in the pipe.

In such a tube inverting device according to the prior art, there is a problem of reducing work efficiency because a large amount of fluid supplied to expand the tube flows out through the inlet through which the tube is supplied.

Korea Patent Registration No. 822336 (2008.04.08.)

Therefore, the present invention has been proposed to solve the above conventional problems, and an object of the present invention is to invert and insert a tube into an underground conduit using air pressure without using any liquid for blocking leakage pressure. It is an object of the present invention to provide a tube reversing device for pipe repair that can effectively block the outflow of air pressure.

In order to achieve the above object, the tube inverting device for pipe repair according to the technical idea of the present invention is a tube inverting device for pipe repair that uses air pressure to invert and insert the tube into the underground pipe. The part has an inlet through which the tube is introduced before being inverted, and the rear end has an outlet through which the tube is inverted and expanded by receiving air pressure, and crosses the internal space vertically to the front and rear sides before being inverted. a body casing having an inner partition wall having a through-hole for guiding the state tube to pass therethrough; a transfer roller installed in the body casing to transfer the tube to the rear; a pressure member installed along one side of the through hole of the inner bulkhead to allow the tube passing through the through hole to come into close contact with one side; an air pocket installed along the other side of the through-hole of the inner bulkhead so as to face the pressure member and pressurizing the tube passing through the through-hole by being in close contact with the pressure member at both sides while expanding when air is injected; and an air inlet installed near the outlet inside the main body casing to inject air and provide air pressure for inversion and expansion of the tube; including, when the air pocket expands, the tube passing through the through hole is interposed between them. While the air pocket and the pressing member are in close contact with each other, the rearward movement of the tube is allowed, but the air pressure provided inside the main body casing for inversion and expansion of the tube is prevented from leaking out through the through hole of the inner bulkhead. It is characterized by its technical configuration.

Here, a plurality of inner bulkheads may be installed inside the main body casing, and the air pockets and the pressing member may be installed in pairs in each of the inner bulkheads to block air pressure to be discharged to the outside in multiple blocks.

In addition, the air pocket and the pressing member may be formed in a cylindrical shape, respectively, so that the frictional contact area for the tube passing through the through hole of the inner partition wall is reduced and the pressing force is increased.

In addition, a semi-tubular pocket support member may be further provided to surround and support the other side of the outer circumferential surface of the air pocket so as to closely press the tube without being pushed to the other side when the air pocket is inflated.

In addition, it is installed near the air pocket and the pressing member to block the outflow of air pressure by filling the gap between the air pocket and the pressing member formed by the left and right ends of the tube passing between the air pocket and the pressing member It further includes an air flow blocking member, wherein the air flow blocking member has a triangular cross-sectional shape that becomes sharper toward the front end and is provided to be able to advance and retreat, but is provided in a pair of left and right spaced apart from each other in correspondence with the left and right widths of the tube, An air flow blocking head advancing and filling the gap between the air pocket formed by the left and right ends of the tube and the pressure member while pressing the right end toward the pressing member, and the air flow blocking head being in charge of each of the first pistons It may be characterized in that it includes a pair of forward and backward cylinders for advancing and retreating the air flow blocking head.

In addition, it may be characterized in that it includes a spacing control cylinder installed in the form of connecting a pair of main bodies or a pair of first pistons of the forward and backward cylinders to adjust the distance between the pair of airflow blocking heads.

In addition, between the inner bulkhead and the inner bulkhead, the airflow blocking member facing the inner bulkhead located on the front side and the airflow blocking member facing the internal bulkhead located on the rear side are integrally coupled so as to be oriented to each other to form a single module. there is.

In addition, a lubricating oil tank for storing lubricating oil is installed on the upper part of the main body casing, and the lubricating oil supplied from the lubricating oil tank is applied to the tube, which is installed near the inlet inside the main body casing, so that the tube contacts the air pocket and the pressure member. A first lubricating oil spray nozzle that induces friction reduction, and a second lubricating oil spray nozzle that is installed near the outlet inside the main casing and applies the lubricating oil supplied from the lubricating oil tank to the tube to induce friction reduction when the tube is inverted and expanded. It may be characterized in that it further comprises.

In addition, an auxiliary partition wall installed to vertically cross the inner space of the main body casing at the rear side of the inner partition wall located at the rearmost part inside the main body casing and having an opening for guiding the tube in a state before inversion to pass through, and the auxiliary partition wall An air flow blocking plate installed to open and close the opening in the bulkhead is further provided, and the air flow blocking plate is used to close the opening of the auxiliary bulkhead, so that the outflow of air pressure can be forcibly blocked regardless of the air pocket. Characterized in that It can be characterized as being able to block.

In addition, the conveying roller may be characterized in that it consists of a cylindrical roller body rotating by the driving force of the motor and a plurality of circular pipes joined so as to protrude at regular intervals along the circumferential direction of the outer circumferential surface of the roller body.

The tube reversing device for pipe repair according to the present invention can effectively block the outflow of air pressure without using any liquid for blocking leakage by using air pockets when the tube is inverted and introduced into the underground pipe using air pressure. .

1 is a side view of a tube reversing device for pipe repair according to an embodiment of the present invention
Figure 2 is a side cross-sectional view for explaining the configuration of a tube reversing device for pipe repair according to an embodiment of the present invention
Figure 3 is a configuration diagram for explaining the air flow blocking member in the tube reversing device for pipe repair according to an embodiment of the present invention
Figure 4 is a configuration diagram for explaining a modified air flow blocking member in the tube reversing device for pipe repair according to an embodiment of the present invention
5 to 9 are a series of reference views for explaining a pipeline repair method using the tube reversing device for pipeline repair of the present invention.

Referring to the accompanying drawings, a tube reversing device for pipe repair according to embodiments of the present invention will be described in detail. Since the present invention can have various changes and various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention. Like reference numerals have been used for like elements throughout the description of each figure. In the accompanying drawings, the dimensions of the structures are shown enlarged than actual for clarity of the present invention, or reduced than actual in order to understand the schematic configuration.

Also, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, they are not interpreted in an ideal or excessively formal meaning. .

<Example>

Figure 1 is a side view of a tube inverting device for pipe repair according to an embodiment of the present invention, Figure 2 is a side cross-sectional view for explaining the configuration of the tube inverting device for pipe repair according to an embodiment of the present invention, Figure 3 is this It is a configuration diagram for explaining the air flow blocking member in the tube reversing device for pipe repair according to an embodiment of the present invention, and FIG. It is a composition diagram.

As shown, the tube reversing device for pipe repair according to an embodiment of the present invention is a tube reversing device for pipe repair that uses air pressure to invert and insert the tube T1 into the underground pipe. A main body casing 110 having an internal partition wall 113, a transfer roller 120, an air pocket 130a, a pressing member 130b, a pocket support member 130c, an airflow blocking member 140, a first lubricant spray It includes a nozzle 150a and a second lubricating oil spray nozzle 150b, an air inlet 160a and a steam inlet 160b, a flange support device 170, and an air flow blocking plate 180 as main components.

The tube reversing device 100 for pipe repair according to an embodiment of the present invention blocks leakage pressure such as water by inverting and inflating the tube T1 into the underground pipe using air pressure and inserting the tube T1 into the underground pipe using air pressure. It is configured to effectively block the outflow of air pressure without using a liquid for application.

Hereinafter, a tube reversing device for pipe repair according to an embodiment of the present invention will be described in detail, focusing on each of the above components.

The body casing 110 has an inlet 111 on the front and rear sides, respectively, through which the tube T1 is introduced in a state before being inverted, and an outlet 112 through which the tube T1 is inverted and expanded by receiving air pressure, and is discharged. and an inner space through which the tube T1 passes. A plurality of internal partition walls 113 vertically crossing the internal space are installed in the body casing 110 . A through-hole 113a is formed in the inner partition wall 113 to guide the tube T1 through it. According to the configuration having the plurality of internal partition walls 113 having the through holes 113a formed therein, the tube T1 introduced through the inlet 111 passes through the through holes 113a of the internal partition wall 113. After being guided to the outlet 112, it is inverted and expanded to flow out.

The pressing member 130b is installed along one side (lower side in the drawing) of the through-hole 113a of the inner partition wall 113, and the air pocket 130a faces the pressing member 130b in correspondence with the inside. It is installed along the other side (upper side in the drawing) of the through-hole 113a of the partition wall 113, and when air is injected, the tube T1 passing through the through-hole 113a expands along with the pressing member 130b. Close and pressurize from both sides. The air pocket 130a and the pressing member 130b are formed in a cylindrical shape, respectively, to reduce the frictional contact area with respect to the tube T1 passing through the through hole 113a of the inner partition wall 113, and to increase the pressing force .

As a result, when air is injected into the air pocket 130a and expands, the air pocket 130a and the pressure member 130b come into close contact with each other with the tube T1 passing through the through hole 113a in between. Although backward movement is allowed, it becomes possible to block the air pressure provided inside the body casing 110 for inversion and expansion of the tube T1 from leaking out to the outside through the through hole 113a of the inner partition wall 113.

The pocket support member 130c supports the air pocket 130a so as not to be pushed to the other side where the pressing member 130b is located when the air pocket 130a expands so that the air pocket 130a can press the tube T1 in close contact more stably. induce To this end, the pocket support member 130c is provided as a semi-tubular member that surrounds and supports the other side of the outer circumferential surface of the air pocket 130a. If such a pocket support member 130c is additionally installed, it will not be pushed to the other side when the air pocket 130a expands, and will tightly adhere to the pressing member 130b and close the through hole 113a of the internal partition wall 113. It is possible to more effectively block air pressure leakage through the

The air flow blocking member 140 is installed near the internal partition wall 113 in which the air pocket 130a and the pressure member 130b are installed, and the tube T1 passing between the air pocket 130a and the pressure member 130b. Due to the thickness and shape of the left end and the right end, it serves to block the outflow of air pressure while filling the gap between the air pocket (130a) and the pressing member (130b) formed next to it. To this end, the airflow blocking member 140 includes left and right airflow blocking heads 141, advance and retreat cylinders 142, and separation adjusting cylinders 143, as shown in FIG. The airflow blocking head 141 of the airflow blocking member 140 is formed in a triangular cross-sectional shape in which the vertical width gradually increases from the sharp tip toward the rear, as shown in the enlarged portion of FIG. 2, and the upper side has an inclined surface 141a is formed

The air flow blocking head 141 is provided as a pair of left and right spaced apart from each other corresponding to the left and right widths of the tube T1, and has a triangular cross-sectional shape in which the upper and lower widths gradually increase from the front end to the rear, so that the forward and backward cylinders 142 When advanced by the air pocket (130a) and the pressure member (130b) more closely fitted between the left end and the right end of the tube (T1) presses toward the pressure member (130b) at the same time the left end and the right end of the tube (T1) (T1) The gap between the air pocket 130a and the pressing member 130b formed by the end is filled.

The advance and retreat cylinder 142 serves to advance and retreat the air flow blocking head 141 as described above. The forward and backward cylinders 142 are provided on the left and right sides corresponding to the airflow blocking heads 141 installed on the left and right sides, and the airflow blocking heads 141 are coupled to the front end of the first piston 142a of the forward and backward cylinders 142. .

The spacing control cylinder 143 is installed in the form of connecting a pair of main bodies of the forward and backward cylinders 142 or a pair of first pistons 142a of the forward and backward cylinders 142 as shown in the drawing to block air flow provided on the left and right sides. It is provided to adjust the separation distance between the heads 141.

Here, the basic form of the air flow blocking member 140 is a form including two air flow blocking heads 141, a forward and backward cylinder 142, and a space adjustment cylinder 143 as shown in FIG. When installed between the partition wall 113 and the inner partition wall 113, as shown in FIG. 4, the air flow blocking member 140 toward the inner partition wall 113 located on the front side and the internal partition wall 113 located on the rear side It is preferable that the air flow blocking members 140 are oriented to each other and installed in the form of an integrated module.

The air flow blocking plate 180 serves to forcibly block the outflow of air pressure regardless of whether the air pocket 130a is operated. In order to install the air flow blocking plate 180, first, on the rear side of the inner partition wall 113 located at the rear end inside the main body casing 110, an auxiliary partition wall 114 vertically crosses the inner space of the main body casing 110. ) is installed. An opening 114a is formed in the auxiliary barrier 114 to guide the tube T1 in a state before being inverted to pass therethrough. The air flow blocking plate 180 is installed on the upper side near the opening 114a formed on the rear side of the auxiliary partition wall 114 and is installed in the form of a hinged door rotatable with respect to the auxiliary partition wall 114 around the upper end. As a result, when the air flow blocking plate 180 rotates downward, the opening 114a of the auxiliary partition 114 is completely blocked, and when the air flow blocking plate 180 rotates upward, the opening 114a of the auxiliary partition 114 is opened. to be in an open state. A rubber packing is installed on the front surface of the air flow blocking plate 180 for airtight contact with the auxiliary bulkhead 114 .

Inside the main casing 110, near the outlet 112, an air inlet 160a and a steam inlet 160b are installed to provide air pressure by injecting air and steam to invert and expand the tube T1, respectively. According to the configuration having the air inlet 160a and the steam inlet 160b, since the hose for injecting air and the hose for injecting steam can be simultaneously connected from the support vehicle, the hose for injecting air and the hose for injecting steam can be removed during work. There is no hassle of replacing them alternately.

The main body casing 110 has a lubricating oil tank 150c for storing lubricating oil, and a first lubricating oil spray nozzle 150a and a second lubricating oil spray nozzle 150b for applying lubricating oil from the lubricating oil tank 150c to the tube T1. ) is installed. The first lubricating oil spray nozzle 150a is installed near the inlet 111 inside the body casing 110 and applies the lubricating oil supplied from the lubricating oil tank 150c to the moving tube T1. Then, while the contact friction of the tube T1 to the air pocket 130a and the pressure member 130b is reduced, frictional damage to the tube T1 can be prevented. The second lubricating oil spray nozzle 150b is installed near the outlet 112 inside the main body casing 110 and applies the lubricating oil supplied from the lubricating oil tank 150c to the tube T1 just before inverting and expanding. Then, friction is reduced when the tube T1 is inverted and expanded, so that the inversion and expansion are performed more smoothly. Here, when the lubricating oil tank 150c is configured to be installed above the body casing 110, the problem of connecting a hose for supplying lubricating oil from the outside disappears.

The transfer roller 120 is installed in the body casing 110 and serves to pressurize and transfer the tube T1 backward before being reversed. To this end, the conveying roller 120 is bonded to a cylindrical roller body 121 rotating by the driving force of a motor (not shown) and protruding at regular intervals along the circumferential direction on the outer circumferential surface of the roller body 121. It consists of a plurality of circular pipes 122. In this way, when the conveying roller 120 is manufactured by bonding the circular pipe 122 to the outer circumferential surface of the roller body 121, a mold or device for manufacturing the exclusive conveying roller 120 is unnecessary, thereby reducing manufacturing costs. Since the pressure transfer capability is improved without damaging the tube (T1), the inverted expansion of the tube (T1) is performed more smoothly.

A first flange 116a is installed on the circumference of the outlet 112 of the body casing 110, and the tube ( T1) is provided with a second flange 116b fixing one end of the circumference. Further, a ring-shaped magnet plate 116c having magnetism is bonded to a surface of the first flange 116a facing the second flange 116b. According to the configuration provided with the magnet plate 116c as described above, the second flange 116b is removed by the magnetic force of the magnet plate 116c before fastening the first flange 116a and the second flange 116b by bolts and nuts. Since it can be temporarily attached to the first flange 116a, shaking of the second flange 116a can be prevented during a fastening operation using bolts and nuts. In the case of the magnet plate 116c, it is provided with magnetic rubber that can also serve as a packing function. In the case of magnet rubber, even if the magnetic force is not strong, it is sufficient in the present invention, which is to prevent the second flange 116b from shaking while the flange support device 170 supports the second flange 116b. This is because only the first flange 116a and the second flange 116b need only be temporarily attached.

A support rope 191 wound on a rotating reel 190 is connected to the other end of the tube T1, which is rolled inward due to the transfer and inversion expansion of the tube T1. As a result, the rotating reel 190 gradually releases the support rope 191 so that the other end of the tube T1 can move in step with the progress of the transfer and inversion expansion of the tube T1. The support rope 191 connected to the other end of the tube T1 is gradually released from the rotating reel 190 and continuously supports the other end of the tube T1, thereby inverting and expanding the tube T1. As it is successfully done, it adheres to the entire area of the pipeline to be repaired.

The flange support device 170 serves to lift and support the second flange 116b when fixing the circumference of one end of the tube T1 by fastening the first flange 116a and the second flange 116b. To this end, the flange support device 170 is installed in a crane 171 with an arm 171a installed so as to be able to rotate and retract on the upper part of the rear end of the main body casing 110, and the crane 171, It consists of a hoist 173 capable of lifting and lowering the second flange 116b in a state where the hook 116d of the second flange 116b is hooked and supported by a rope 173a having a hook 174 attached to the end thereof. Here, the first flange 116a is already installed and fixed to the circumference of the outlet 112 of the body casing 110, and separately, the second flange 116b corresponds to the size of the tube T1 in use. Thus, it is selected from among those having through holes of different sizes and is fastened to the first flange 116a. In order to fasten the second flange 116b to the first flange 116a, the flange support device 170 is attached to the ring 116d of the second flange 116b while the second flange 116b is placed on a transport vehicle or on the ground. After hooking the hook 174 of the hoist 173, the rope 173a is wound and the second flange 116b is lifted to the height of the first flange 116a. Thereafter, the second flange 116b is moved to the vicinity of the first flange 116a by the crane 171 . In addition, the first flange 116a and the second flange 116b are fastened with bolts and nuts with one end of the circumference of the tube T1 interposed between the first flange 116a and the second flange 116b. At this time, if the first flange 116a and the second flange 116b are temporarily attached to each other using the magnet plate 116c before fastening with bolts and nuts, the second flange 116b is attached to the rope 173a. Since it does not wobble, fastening work using bolts and nuts becomes much easier.

A caterpillar 101 is installed below the body casing 110 . As a result, the tube reversing device for pipe repair of the present invention has the ability to move on its own without the support of another vehicle. A hydraulic device (not shown) is installed in the lower portion of the body casing 110 for stable support on the ground.

The conduit repair method using the tube reversing device for conduit repair of the present invention configured as described above will be briefly described based on FIGS. 5 to 9 attached.

First, the preliminary investigation of the pipeline to be repaired, dredging, and cleaning are performed. In this step, a site survey, a traffic treatment plan, a water rotation plan, and a ventilation plan are established, and as shown in FIG. Thereafter, the sludge in the pipe line is vacuumed together with the cleaning water by the high-pressure cleaning vehicle 202 to clean the inside of the pipe line. At this time, before the dredging work, the water stop plug 211 is installed to block the water and turn the water.

Thereafter, the investigation step in the pipeline proceeds. In this step, as shown in FIG. 6, the CCTV inspection vehicle 203 is moved near the manhole on the ground, and then the inspection robot 213 equipped with CCTV is put into the conduit and moved, and the condition in the conduit, including the damaged part in the conduit, is monitored by CCTV. Investigate through video. When the investigation in the pipe is completed, if necessary, a work tool or robot is put into the pipe to arrange the inside of the pipe to facilitate the insertion of the tube (T1) and application of the lining material.

Then, the tube insertion step proceeds. In this step, as shown in FIG. 7, the tube inversion device 100 for pipe repair according to the embodiment of the present invention and the support vehicle 204 capable of supplying air and steam are moved together near the manhole on the ground, and then the By supplying air to the tube reversing device 100 for pipe repair, the tube T1 impregnated with the thermosetting resin is inverted and introduced into the pipe. At this time, the air pressure is about 0.3 ~ 0.6kg / cm ² to comply with the inversion and transfer speed of the tube (T1), and one end of the tube (T1) is the outlet 112 of the main casing 110 First flange (116a) installed And while the tube (T1) is inverted in a state fixed by the second flange (116b), the other end moves in the conduit. The other end of the tube (T1) is a support rope that is gradually released from the rotating reel 190 ( While maintaining the state supported by 191), the outer surface of the inverted tube T1 smoothly adheres to the inner circumferential surface of the conduit. When reaching the end of the maintenance section in the pipe line, the transfer of the tube T1 is limited by the stopper 214 installed in advance.

After that, the curing step proceeds. In this step, as shown in FIG. 8, steam is supplied from the boiler of the support vehicle 204 to the tube reversing device 100 for pipe repair of the present invention to the tube T1 already inserted into the pipe in a high temperature temperature atmosphere (80). ℃ or higher) is formed. The temperature inside the pipeline created by steam is determined by the curing program according to the diameter of the pipeline and the thickness of the thermosetting resin, which is the lining material. do.

After that, the inspection step proceeds. In this step, as shown in FIG. 9, the CCTV inspection vehicle 203 is moved once again near the manhole on the ground, and then the inspection robot 213 equipped with CCTV is put into the conduit and moved, detailing the condition of the inner wall of the conduit lined with completion. investigate Check the formation of wrinkles, peeling, and lifting of the thermosetting resin used as a lining material, and re-repair or save as reference data for future maintenance.

Although preferred embodiments of the present invention have been described above, the present invention can use various changes, modifications, and equivalents. It is clear that the present invention can be equally applied by appropriately modifying the above embodiment. Therefore, the above description does not limit the scope of the present invention, which is defined by the limits of the following claims.

110: body casing 120: transfer roller
130a: air pocket panel 130b: pressing member
130c: pocket support member 140: air flow blocking member
141: air flow blocking head 142: forward and backward cylinder
143: spacing adjustment cylinder 150a, 150b: lubricant spray nozzle

Claims (9)

As a tube reversing device for pipe repair that uses air pressure to invert and insert the tube into the underground pipe,
An inlet is provided at the front end, and an outlet is provided at the rear end, through which the tube is inverted and expanded by receiving air pressure. a body casing having an inner partition wall having a through-hole for guiding the tube in the previous state to pass therethrough; a transfer roller installed in the body casing to transfer the tube to the rear; a pressure member installed along one side of the through hole of the inner bulkhead to allow the tube passing through the through hole to come into close contact with one side; an air pocket installed along the other side of the through-hole of the inner bulkhead so as to face the pressure member and pressurizing the tube passing through the through-hole by being in close contact with the pressure member at both sides while expanding when air is injected; and an air inlet installed near the outlet inside the main body casing to inject air and provide air pressure for inversion and expansion of the tube; including, when the air pocket expands, the tube passing through the through hole is interposed between them. While the air pocket and the pressing member are in close contact with each other, the rearward movement of the tube is allowed, but the air pressure provided inside the main body casing for inversion and expansion of the tube is prevented from leaking out through the through hole of the inner bulkhead, ,
A plurality of inner partition walls are installed inside the main body casing, and the air pockets and pressing members are installed in pairs in each of the inner partition walls to block air pressure from flowing out to the outside in multiple ways,
The air pocket and the pressing member are each formed in a cylindrical shape to reduce the frictional contact area and increase the pressing force with respect to the tube passing through the through hole of the inner partition wall,
It is installed near the air pocket and the pressurizing member to block the air flow by filling the gap between the air pocket and the pressurizing member formed by the left and right ends of the tube passing between the air pocket and the pressurizing member to block the outflow of air pressure. It further includes a member, wherein the air flow blocking member is provided to be able to advance and retreat in a pair of left and right spaced apart from each other in correspondence with the left and right widths of the tube, and is formed in a triangular cross-sectional shape in which the upper and lower widths gradually become thicker toward the rear from the sharp tip. When moving forward, it is more closely fitted between the air pocket and the pressure member, pressing the left and right ends of the tube toward the pressure member, and at the same time filling the gap between the air pocket and the pressure member formed by the left and right ends of the tube A tube reversing device for pipe repair, characterized in that it comprises an air flow blocking head and a pair of advance and retreat cylinders for advancing and retreating the air flow blocking head by a first piston in charge of each of the air flow blocking heads. delete delete According to claim 1,
Tube reversing device for pipe repair, characterized in that it further comprises a semi-tubular pocket support member that surrounds and supports the other side of the outer circumferential surface of the air pocket so as to press the tube closely without being pushed to the other side when the air pocket is inflated. delete According to claim 1,
Tube reversing device for pipe repair, characterized in that it comprises a spacing control cylinder installed in the form of connecting a pair of main bodies or a pair of first pistons of the forward and backward cylinders to adjust the distance between the pair of airflow blocking heads. According to claim 6,
Between the inner bulkhead and the inner bulkhead, the air flow blocking member toward the inner bulkhead located on the front side and the air flow blocking member toward the internal bulkhead located on the rear side are integrally coupled to each other to form a single module. tube inverter. According to claim 1,
A lubricating oil tank for storing lubricating oil is installed on the upper part of the main body casing, and the lubricating oil supplied from the lubricating oil tank is applied to the tube, which is installed near the inlet inside the main casing, thereby reducing the contact friction of the tube with respect to the air pocket and the pressure member. A first lubricating oil spray nozzle for inducing, and a second lubricating oil spray nozzle installed near the outlet inside the main body casing and applying the lubricating oil supplied from the lubricating oil tank to the tube to induce friction reduction when the tube is inverted and expanded. Tube reversing device for pipe repair, characterized in that provided. According to claim 1,
An auxiliary partition wall installed to cross the inner space of the main body casing vertically at the rear side of the inner partition wall located at the rear end inside the main body casing and having an opening for guiding the tube in a state before inversion to pass through, and in the auxiliary partition wall Further comprising an air flow blocking plate installed to open and close the opening,
A tube reversing device for pipe repair, characterized in that it can be blocked by forcibly blocking the outflow of air pressure regardless of the air pocket by closing the opening of the auxiliary bulkhead with the air flow blocking plate.

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