KR102374063B1 - Tube reversing device for conduit repair with internal wall - Google Patents

Abstract

The present invention relates to a tube reversing device for conduit repair with an internal wall, wherein a tube can be reversed and can be inputted into an underground conduit using air pressure and the leakage of the air pressure can be prevented effectively using only a minimal amount of liquid for blocking leakage pressure. The present invention comprises: a main body casing having an inlet, through which a not-reversed tube is introduced, and an outlet, through which a tube is discharged while being reversed by receiving air pressure, formed on a front side and a rear side respectively and having an inner wall installed to divide an inner space into a front-side space and a rear-side space; and transporting rollers installed in a pair above and below the inlet of the main body casing to pressurize and transport the tube backward. A penetrating path is formed on a lower end of the inner wall of the main body casing to guide a tube introduced through the inlet to pass while making a trajectory in the shape of V of ascent after descent. Liquid for blocking leakage pressure of an amount capable of completely enveloping the penetrating path formed on the lower end of the inner wall is filled into the inner space of the main body casing, thereby preventing air pressure provided to the rear-side space of the main body casing to reverse a tube from being leaked through the penetrating path.

Description

Tube reversing device for conduit repair with internal wall

The present invention relates to a tube reversing device for pipeline repair, and in particular, by using air pressure to reverse the tube into an underground pipeline, and to effectively block the outflow of air pressure with only a minimal amount of leakage-blocking liquid. It relates to a tube inversion device for use.

In general, a tube reversing device is a device for repairing old pipes buried underground such as water and sewage pipes and industrial pipes for gas, electricity, and communication, and while inverting the tube impregnated with curable resin, the inside of the pipe After inserting into the tube, expanding the tube and pressing it to the inner wall of the pipeline, a series of operations are performed to harden the curable resin and adhere to the inner wall of the pipeline.

In this regard, the conventional tube inversion device disclosed in Korean Patent Publication No. 10-0822336 provides a roller for guiding the tube, and an enclosed space, and a fluid inlet and fluid outlet for supplying and discharging fluid to and from the inside of the tube. It was configured to include a body in which the inlet and outlet of the tube were formed.

The conventional tube reversing device having such a configuration is to fill the inside of the pipe by transferring the end of the tube while inverting it in a state where it is moved and installed toward the pipe, and the high-temperature fluid is supplied into the inside of the tube by the fluid supply device to the inside of the pipe. The thermosetting resin pre-impregnated on the outer surface of the tube in contact with the inner peripheral surface was cured. Afterwards, when the thermosetting work of the thermosetting resin was completed, a series of pipe repair work could be completed by recovering the tube in the pipe.

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

Korean Patent Publication No. 822336 (2008.04.08.)

Accordingly, the present invention has been proposed to solve the problems of the related art as described above, and an object of the present invention is to use air pressure to invert the tube to the inside of the underground pipeline and to inject the tube, while using only a minimum amount of liquid for blocking leakage of pressure. An object of the present invention is to provide a tube reversing device for repairing a pipeline to effectively block the outflow of

In order to achieve the above object, the tube reversing device for pipe repair according to the technical idea of the present invention is a tube reversing device for pipe repair in which the tube can be inverted and put into the underground pipe by using air pressure, the front side The main body casing is provided with an inlet and air pressure flowing in before the tube is inverted, and an outlet is formed in the rear and the tube is inverted, respectively, and an inner partition dividing the inner space into a front space and a rear space is installed; and a transfer roller installed as a pair at the upper and lower portions at the inlet of the main casing to pressurize the tube to the rear, and a lower end of the inner partition of the main casing, after the tube introduced through the inlet descends A through passage guiding it to pass while drawing an ascending V-shaped orbit is formed, and the inner space of the main casing is filled with an amount of leakage blocking liquid that can completely cover the through passage formed at the lower end of the inner partition wall. It is characterized in its technical configuration to block the air pressure provided to the space on the rear side of the main body casing from flowing out through the through passage for inversion of the .

Here, a guide roller is installed at the upper end of the through passage so that the tube passing through the through passage is not damaged while in contact with the lower end of the inner partition wall.

In addition, the tube further includes a first guide panel inclined downwardly from the vicinity of the inlet to the vicinity of the passage with the center of the passage and a second guide panel installed inclined upwardly from the vicinity of the passage to the vicinity of the outlet to guide the movement of the tube, The leakage-blocking liquid may be filled in a stagnant form in an area between the first guide panel and the second guide panel.

In addition, a guide roller for inducing smooth reversal of the tube while supporting and guiding the tube rising toward the outlet from the lower side may be further installed on the upper surface of the second guide panel.

In addition, a storage tank for storing the leakage-blocking liquid is installed on the upper part of the main body casing, and the leakage-blocking liquid can be supplied from the storage tank to the area between the first guide panel and the second guide panel through a supply pipe, A recovery pipe is installed from the storage tank to an area between the first guide panel and the second guide panel, and a submersible motor is further installed at the lower end of the recovery pipe to recover the leakage-blocking liquid to the storage tank, , It may be characterized in that a level gauge for measuring the level of the leakage-blocking liquid is further installed in a region between the first guide panel and the second guide panel.

In addition, near the outlet inside the body casing, air is sprayed at high pressure to the tube transferred to the outlet to remove the leakage pressure blocking liquid adhering to the tube, and lubricating oil is sprayed for smooth reversal of the tube. It may be characterized in that the lubricant atomizer is installed sequentially.

In addition, a ring-shaped magnet plate having a magnetism is joined to the opposite surface of the second flange of the first flange to temporarily attach the second flange to the first flange by means of a magnetic force before fastening the second flange to the first flange by a bolt and a nut. It can be characterized as being able to.

The tube reversing device for pipeline repair according to the present invention uses air pressure to invert the tube into the underground pipeline and insert it, while turning the tube into a V-shaped By inducing it to pass while drawing a track, it is possible to effectively block the outflow of air pressure with only a minimum amount of leakage-blocking liquid.

Furthermore, according to the present invention, the amount of liquid for blocking leakage can be significantly reduced by the first guide panel and the second guide panel installed on both sides of the through passage, and the movement of the tube inside the body casing is made more smoothly.

1 is a side view of a tube inversion 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 inversion device for pipe repair according to an embodiment of the present invention
3 to 7 is a series of reference views for explaining the pipe repair method made using the tube inversion device for pipe repair of the present invention

With reference to the accompanying drawings will be described in detail with respect to the tube inversion device for pipe repair according to embodiments of the present invention. Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements. In the accompanying drawings, the dimensions of the structures are 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 elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Terms such as commonly used dictionary definitions should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in the present application, they are not to be interpreted in an ideal or excessively formal meaning. .

<Example>

1 is a side view of a tube inverting device for pipe repair according to an embodiment of the present invention, and FIG. 2 is a side cross-sectional view for explaining the configuration of a tube inverting device for pipe repair according to an embodiment of the present invention, FIGS. 7 is a series of reference views for explaining the pipeline repair method made by using the tube reversing device for pipeline repair of the present invention.

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 in which the tube (T) can be inverted and put into the underground pipeline by using air pressure, and an internal bulkhead Main body casing 110 having 113, first guide panel 120a and second guide panel 120b, conveying roller 130, liquid level gauge 140, guide roller 150, rotating reel 160 ), including a flange support device 170 as a main component.

The tube reversing device 100 for pipe repair according to an embodiment of the present invention uses air pressure by these major components to reverse the tube (T) into the underground pipe line and insert the main body casing (110) The tube ( It is configured to effectively block the outflow of air pressure with only a minimum amount of leakage-blocking liquid while inducing T) to pass while drawing a V-shaped orbit.

Hereinafter, a tube inversion device for pipe repair according to an embodiment of the present invention will be described in detail with reference to each of the components.

The main body casing 110 is provided with an inlet 111 and air pressure flowing in before the tube (T) is inverted on the front and rear sides, respectively, and the tube (T) is inverted and an outlet 112 is formed. Provide interior space. In the inner space of the main body casing 110, an inner partition wall 113 that separates the front space and the rear space is installed. A through passage 113a through which the tube T passes is formed at the lower end of the inner partition 113 .

According to the configuration having the internal partition wall 113 in which the through passage 113a is formed at the lower end as described above, the tube T introduced through the inlet 111 descends and then ascends the through passage 113a while drawing a V-shaped orbit. ) will pass. In addition, the internal space of the main body casing 110 is filled with an amount of leakage pressure blocking liquid (FL) that can completely cover the through passage (113a) formed at the lower end of the inner partition wall (113), so that the tube (T) is reversed. The air pressure provided to the space on the rear side of the body casing 110 is blocked so that it does not flow out through the through passage 113a. Here, the internal partition wall 113 formed at the lower end of the through passage 113a serves to guide the tube (T) in the state before being reversed in the body casing 110 to be transported through the vicinity of the floor, and at the same time, more importantly, the minimum amount It can be noted that using only the leakage pressure blocking liquid (FL) of

Furthermore, the first guide panel 120a installed to be inclined downwardly from the vicinity of the inlet 111 to the vicinity of the through-way with the through-way 113a as the center, and the first guide panel 120a installed to be inclined upwardly from the vicinity of the through-way 113a to the vicinity of the outlet 112. 2 to further provide a guide panel (120b) to guide the movement of the tube more smoothly. In addition, the leakage-blocking liquid FL is filled in a stagnant form in the area between the first guide panel 120a and the second guide panel 120b. Accordingly, it is possible to significantly reduce the amount of liquid for blocking leakage of pressure (FL). A pedestal 133 is installed to stably support the first guide panel 120a and the second guide panel 120b.

On the other hand, the leakage pressure blocking liquid FL can be used with ordinary water, and even if a liquid having a higher specific gravity than ordinary water is used, only a small amount is used, so there is little burden on the cost or disposal. When a liquid having a higher specific gravity than water is used, such as a silicone liquid, there is an advantage that it is possible to block a relatively high air pressure even if only a small amount is used compared to water. A drain valve 115 for drainage is preferably installed at the bottom of the body casing 110 .

A storage tank 110c for storing the leakage pressure blocking liquid FL is installed in the upper portion of the rear portion 110b located on the rear side with respect to the inner partition wall in the main body casing 110 . And a supply pipe (H1) is installed to supply the leakage pressure blocking liquid (FL) from the storage tank (110c) to the area between the first guide panel (120a) and the second guide panel (120b). Accordingly, when the leakage blocking liquid (FL) is insufficient in the area between the first guide panel (120a) and the second guide panel (120b) during operation, the leakage blocking liquid (FL) is supplied directly from the storage tank (110c) to supplement it. be able to

Here, a level gauge 140 for measuring the level of the leakage pressure blocking liquid FL is further installed in a region between the first guide panel 120a and the second guide panel 120b. When the level gauge 140 is installed in this way, while the level of the leakage pressure blocking liquid (FL) is measured in real time during operation, when the level of the leakage pressure blocking liquid (FL) is below the set value, the solenoid valve installed in the supply pipe (H1) is closed. By opening it, it becomes possible to automatically replenish the leakage pressure blocking liquid FL from the storage tank 110c.

On the other hand, a recovery pipe (H2) is installed from the supply tank to the area between the first guide panel (120a) and the second guide panel (120b), and an underwater motor (HM) is installed at the lower end of the recovery pipe (H2). After the installation is further installed and the operation is completed, the leakage pressure blocking liquid (FL) is pumped to the storage tank 110c to be recovered.

In the vicinity of the outlet 112 inside the body casing 110, air is sprayed at high pressure to the tube T transferred to the outlet 112 to remove the leakage pressure blocking liquid FL attached to the tube T. An air injector (A1) is installed so that the lubricating oil atomizer (A2) for spraying lubricating oil for smooth reversal of the tube (T) is sequentially installed. When such an air sprayer (A1) and lubricant sprayer (A2) are installed, the amount of leakage pressure blocking liquid (FL) that is unnecessarily attached to the tube (T) can be reduced and damage due to friction is prevented when the tube (T) is inverted. A more smooth reversal may be achieved.

Here, the lubricating oil tank 110d for supplying lubricating oil to the lubricating oil sprayer A2 is installed inside the main body casing 110 rear side part 110c as shown. As such, when the lubricant tank 110d is installed in the body casing 110, the problem of having to connect one more hose for supplying lubricant to the outside disappears.

Inlet holes 117a and 117b for injecting air and steam into the rear space of the inner space for inversion and expansion of the tube T are installed at one point of the body casing 110 . It is preferable that the inlet is installed separately into a first inlet 117a and a second inlet 117b. Then, the hose for air injection and the hose for steam injection can be simultaneously connected to the first inlet 117a and the second inlet 117b from the support vehicle, respectively, so the hose for air injection and the hose for steam injection are alternated during work. There is no hassle of replacing it with

A first flange 116a is installed on the periphery of the outlet 112 of the body casing 110, and a tube coupled to face the first flange 116a with one end of the tube T interposed therebetween ( A second flange 116b for fixing one end of the periphery of T) is provided. Furthermore, a ring-shaped magnet plate 116c having magnetism is bonded to the surface opposite to the second flange 116b of the first flange 116a. According to the configuration in which the magnet plate 116c is provided, the second flange 116b by the magnetic force of the magnet plate 116c before fastening the first flange 116a and the second flange 116b by the bolt and nut. Since it can be temporarily attached to the first flange 116a, it is possible to prevent shaking of the second flange 116a during the fastening operation by the bolt and nut. In the case of the magnet plate 116c, it is provided with a magnetic rubber that can also serve as a packing function. In the case of the magnetic rubber, even if the magnetic force is not strong, it is sufficient in the present invention, which is to prevent the magnet plate 116c from shaking the second flange 116b while the flange support device 170 is supporting the second flange 116b. This is because only the first flange 116a and the second flange 116b may be simply temporarily attached.

An inspection hole 118 is installed on the upper surface of the front side portion 110a of the main body casing 110 . And a plurality of observation windows 114 continuously arranged along the transport path of the tube (T) are installed on the side wall of the main casing 110 . When the observation window 114 is installed in this way, it can be seen whether the tube (T) introduced into the body casing 110 is being smoothly transported along a predetermined path. possible.

The guide roller 150 is installed at a plurality of points inside the body casing 110 to guide the transport of the tube T while solving the problem of damage to the tube T due to unnecessary contact. The guide roller 150 is installed at the upper end of the through passage (113a) with the highest priority so that the tube (T) passing through the through passage (113a) is not damaged while in contact with the lower end of the inner bulkhead in which the through passage (113a) is formed. do. In addition, the guide roller 150 is installed on the upper surface of the second guide panel 120b to support and guide the tube T rising toward the outlet 112 from the lower side.

The transfer roller 130 is installed in a pair at the upper and lower portions at the inlet 111 of the main casing 110 to transfer the tube T to the rear under pressure. The transfer roller 130 receives a driving force from a nearby motor 130a to rotate. When such a transfer roller 130 is installed, the tube (T) is dragged with air pressure from the outlet 112 side, and the transfer roller 130 is pushed from the inlet 111 side, and the tube (T) is expanded and transferred in reverse. This is done more smoothly. The conveying roller 130 may be provided with a friction protrusion formed on the outer surface to improve the pressure conveying ability for the tube (T).

A support rope 161 wound around the rotary reel 160 is connected to the other end T1 of the tube T that is rolled inward due to the transfer and reverse expansion of the tube T. As a result, the rotating reel 160 gradually releases the support rope 161 so that the other end T1 of the tube T can move in line with the passage of the tube T and reverse expansion thereof. In this way, the support rope 161 connected to the other end T1 of the tube T is gradually released from the rotating reel 160 as shown in FIGS. 5 and 6 while continuing the other end T1 of the tube T. is supported, and thereby the tube (T) is successfully reversed and expanded, and is closely adhered to the entire area of the pipe to be repaired.

The flange support device 170 serves to elevate and support the second flange 116b when the first flange 116a and the second flange 116b are fastened to fix the periphery of one end of the tube (T). To this end, the flange support device 170 is installed on the crane 171 and the crane 171 in which the arm 171a is installed so as to be rotatably operable on the main body so as to be rotatably operable on the rear end of the main body casing 110 . It consists of a hoist 173 that allows the second flange 116b to be raised and lowered in a state in which the hook 116d of the second flange 116b is hung by a rope 173a having a hook 174 at the end thereof. Here, the first flange 116a is already installed and fixed on the periphery of the outlet 112 of the main casing 110, and the second flange 116b corresponds to the size of the tube T used separately. to be selected from those having through-holes of different sizes and 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 hook 116d of the second flange 116b in a state where the second flange 116b is placed on the transport vehicle or the ground. After hooking the hook 174 of the hoist 173, the rope 173a is wound to lift the second flange 116b 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 . Then, the first flange 116a and the second flange 116b are fastened with a bolt and a nut with one end of the tube T 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 a magnet plate 116c before fastening with a bolt and a nut, the second flange 116b is attached to the rope 173a in a state in which it is attached. Since it does not wobble, fastening using bolts and nuts becomes much easier.

The caterpillar 101 is installed under the main body casing 110 . Accordingly, the tube inversion device for pipe repair of the present invention is equipped with the ability to move by itself without receiving support from other vehicles. A hydraulic device 119 is installed at a lower portion of the main casing 110 to stably support the ground.

The pipeline repair method using the tube inversion device for pipeline repair of the present invention configured as described above will be briefly described based on the attached FIGS. 3 to 7 as follows.

First, the pre-investigation, dredging, and cleaning steps of the pipeline to be repaired are carried out. In this step, a field survey, a traffic treatment plan, a water return plan, and a ventilation plan are established, and the inside of the pipeline is cleaned under high pressure using the cleaning nozzle 212 installed in the vacuum suction dredging vehicle 201 as shown in FIG. 3 . Thereafter, the sludge in the pipeline is vacuum sucked together with the washing water by the high-pressure cleaning vehicle 202 to clean the inside of the pipeline. At this time, the water plug 211 is installed before the dredging operation to perform water blocking and water rotation.

After that, the investigation step in the pipeline proceeds. In this step, as shown in FIG. 4, the CCTV investigation vehicle 203 is moved near the ground manhole, and then the CCTV-equipped investigation robot 213 is put into the pipeline and moved while monitoring the condition in the pipeline, including the damaged part in the pipeline. Investigate through video. When the investigation in the pipeline is completed, if necessary, a work tool or robot is put into the pipeline to arrange the tube (T) in order to facilitate the input and application of the lining material.

After that, the tube insertion step is performed. In this step, as shown in FIG. 5, the tube reversing device 100 for pipe repair according to the embodiment of the present invention and the support vehicle 204 capable of supplying air and steam, etc., are moved together near the ground manhole, and then the By supplying air to the tube reversing device 100 for pipeline repair, the tube (T) impregnated with a thermosetting resin is put into the pipeline while inverting. At this time, the air pressure is about 0.3 to 0.6 kg/cm ² to comply with the inversion and transport speed of the tube (T), and one end of the tube (T) is installed in the outlet 112 of the body casing 110 first flange (116a) And while the tube (T) is inverted in a state fixed by the second flange (116b), the other end (T1) moves in the conduit. The outer surface of the inverted tube (T) while maintaining the state supported by the support rope 161 that is released by the is smoothly adhered to the inner circumferential surface of the conduit. When the end of the maintenance section in the pipeline is reached, the transfer of the tube T is limited by the stopper 214 installed in advance.

After that, the curing step is performed. In this step, as shown in FIG. 6, steam is supplied from the boiler of the support vehicle 204 to the tube reversing device 100 for pipeline repair of the present invention, and a high temperature temperature atmosphere 80 in the tube T already inserted into the pipeline. ℃ or higher). The temperature in the pipe line created by steam is determined by the curing program according to the pipe diameter and the thickness of the thermosetting resin, which is the lining material. do.

After that, the inspection step is performed. In this step, as shown in Fig. 7, once again, the CCTV investigation vehicle 203 is moved near the ground manhole, and then the CCTV-equipped investigation robot 213 is put into the pipe and moved while the lining is completed in detail. investigate Check the wrinkle formation, peeling phenomenon, and lifting phenomenon of the thermosetting resin used as a lining material and save it as reference data for repair or future maintenance.

Although preferred embodiments of the present invention have been described above, various changes, modifications and equivalents may be used in the present invention. It is clear that the present invention can be equally applied by appropriately modifying the above embodiments. Accordingly, the above description is not intended to limit the scope of the present invention, which is defined by the limits of the following claims.

110: body casing 120a: first guide panel
120a: second guide panel 130: transfer roller
140: level gauge 150: guide roller
160: rotary reel 170: flange support device

Claims (8)

A tube reversing device for pipe repair that uses air pressure to reverse the tube and put it into the underground pipe,
The body casing is provided with an inlet and air pressure flowing in before the tube is inverted on the front and rear sides, respectively, and an outlet is formed when the tube is inverted, and an inner bulkhead dividing the inner space into a front space and a rear space is installed; and a conveying roller installed as a pair at the upper and lower portions at the inlet of the main casing to pressurize and convey the tube to the rear;
At the lower end of the inner bulkhead of the main body casing, a through-path is formed to guide the tube introduced through the inlet to pass through while drawing a V-shaped orbit that rises after descending, and the lower end of the inner bulkhead in the inner space of the main body casing An amount of liquid for blocking leakage of pressure that can completely cover the through passage formed in the
A guide roller is installed at the upper end of the through passage so that the tube passing through the through passage is not damaged while in contact with the lower end of the inner bulkhead,
A first guide panel installed to be inclined downwardly from the vicinity of the inlet to the vicinity of the through-way with respect to the through-path as the center and a second guide panel installed to be inclined upwardly from the vicinity of the through-way to the vicinity of the outlet to guide the movement of the tube, The leakage-blocking liquid is filled in a stagnant form in the area between the first guide panel and the second guide panel,
A guide roller is further installed on the upper surface of the second guide panel to support and guide the tube rising toward the outlet from the lower side and induce smooth reversal of the tube,
A storage tank for storing the leakage pressure blocking liquid is installed on the upper part of the main body casing, and the leakage pressure blocking liquid can be supplied from the storage tank to the area between the first guide panel and the second guide panel through a supply pipe, A level gauge for measuring the level of the liquid for blocking leakage is further installed in the area between the first guide panel and the second guide panel, and a recovery pipe hung from the storage tank to the area between the first guide panel and the second guide panel. installed, and a submersible motor is further installed at the lower end of the recovery pipe so that the liquid for blocking leakage can be recovered to the storage tank,
In the vicinity of the outlet inside the main casing, air is sprayed at high pressure to the tube transferred to the outlet to remove the leakage-blocking liquid adhering to the tube, and the lubricant sprayer sprays lubricant for smooth reversal of the tube. are installed sequentially,
A first flange installed on the periphery of the outlet of the main body casing, and a second flange coupled to face the first flange with one perimeter of the tube interposed therebetween to fix the periphery of one end of the tube, the body comprising: A crane having an arm installed on the upper part of the rear end of the casing to enable expansion and contraction in the rotatable main body, and a hoist installed in the crane to enable lifting and lowering in a state in which the second flange is hung and supported by a rope having a hook installed at the end. It further comprises a flange support device consisting of
A ring-shaped magnet plate having a magnetism is joined to the opposite surface of the second flange of the first flange so that it can be temporarily attached by magnetic force before fastening the second flange to the first flange by a bolt and a nut. A tube reversing device for pipe repair, characterized in that. delete delete delete delete delete delete delete

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