Low-pressure Connection Box Pipe Waterproofing Device with Flexible Material and Sponge Wall Contact Part

Abstract

A waterproofing device for a low-pressure connection box conduit opening comprises a wall-contacting part disposed in close contact with the conduit opening of the low-pressure connection box, a resin injection port formed in a portion of the wall-contacting part for injecting resin, a curing resin forming part extending from the wall-contacting part and having a curing space formed for curing the resin injected through the resin injection port, and a conduit-contacting part extending while narrowing from the curing resin forming part, having a predetermined distance from the outer surface of the conduit connected to the conduit opening.

Description

Technology Field

[0001] The present invention relates to a waterproofing device for a low-pressure junction box conduit opening, and more specifically, to a waterproofing device for a low-pressure junction box conduit opening capable of safely waterproofing a low-pressure junction box. Background Technology

[0002] Currently, manholes and low-voltage junction boxes used for connecting power lines in underground areas have their exterior walls connected to corrugated conduits to connect cables. These corrugated conduits are connected to walls and require fixation and waterproofing from the outside.

[0003] However, referring to FIGS. 1 to 3, while the current manhole (for extra-high pressure) utilizes a dedicated prefabricated conduit opening device, the low-pressure connection box has no separate device and is installed as a simple mounting structure, resulting in a problem where fixing and waterproofing are not achieved at all. Prior art literature

[0004] Korean Patent Publication KR 10-2017-0121755 (2017.11.03) The problem to be solved

[0005] Therefore, the objective of the present invention is to provide a waterproofing device for a low-voltage junction box conduit opening that can prevent electric shock accidents involving pedestrians by safely waterproofing the low-voltage junction box. means of solving the problem

[0006] A waterproofing device for a low-voltage junction box conduit opening according to the present invention for achieving the above objective comprises: a wall-contacting part disposed in close contact with the conduit opening of the low-voltage junction box; a resin injection port formed in a portion of the wall-contacting part for injecting resin; a curing resin forming part extending from the wall-contacting part and having a curing space formed therein for curing the resin injected through the resin injection port; and a conduit-contacting part extending from the curing resin forming part while narrowing, having a predetermined distance from the outer surface of the conduit connected to the conduit opening. By injecting resin into the curing resin forming part and the conduit-contacting part while the wall-contacting part is in close contact with the conduit opening, structural strength is improved, and pedestrian electric shock accidents can be prevented by ensuring waterproofing within the low-voltage junction box.

[0007] Here, it is desirable that the wall contact portion, the cured resin forming portion, and the pipe contact portion be made of a flexible material so that their shape can be deformed to fit the pipe and pipe opening, thereby improving waterproofing efficiency.

[0008] Furthermore, it is desirable that the wall-contacting portion, the cured resin-forming portion, and the pipe-contacting portion be formed separately in the same direction from the axis, so that they can be accurately positioned to surround the pipe installed in the pipe opening of the low-pressure connection box.

[0009] Here, it is desirable that the wall-contacting portion be made of a sponge having a predetermined thickness, so that it can be adhered to the shape of the pipe opening, thereby enhancing the waterproofing effect.

[0010] In addition, it is desirable that the above-mentioned tube-contacting portion has a shape that narrows in the axial direction from the extended end region, so that even when resin is injected into the cured resin forming portion and the tube-contacting portion, the resin is prevented from flowing down to the extended end region of the tube-contacting portion.

[0011] Meanwhile, the waterproofing construction method for a low-voltage junction box conduit opening according to the present invention for achieving the above objective comprises the steps of: installing a corrugated pipe in the low-voltage junction box; unfolding a waterproofing device for the low-voltage junction box conduit opening, which is formed by separation from the same direction from the axis, to accommodate the corrugated pipe; positioning a wall-contacting portion of the waterproofing device for the low-voltage junction box conduit opening in close contact with the conduit opening of the low-voltage junction box while the corrugated pipe is accommodated; sealing the gap between the conduit opening and the wall-contacting portion with adhesive tape to finish the process; and mixing a resin with a hardener and injecting it into a resin injection port formed in a specific area of ​​the wall-contacting portion for injecting the resin. By ensuring waterproofing within the low-voltage junction box, electric shock accidents involving pedestrians can be prevented, durability can be improved due to enhanced structural strength of the low-voltage junction box, and failure of cable connectors caused by the intrusion of foreign matter into the junction box can be prevented.

[0012] Here, the waterproofing device for the pipe opening of the low-voltage junction box comprises a wall-contacting part disposed in close contact with the pipe opening of the low-voltage junction box, a resin injection port formed in a region of the wall-contacting part for injecting resin, a curing resin forming part extending from the wall-contacting part and having a curing space formed for curing the resin injected through the resin injection port, and a pipe-contacting part extending while narrowing from the curing resin forming part with a predetermined distance from the outer surface of the pipe connected to the pipe opening. In this configuration, resin is injected into the curing resin forming part and the pipe-contacting part while the wall-contacting part is in close contact with the pipe opening, thereby improving structural strength and ensuring waterproofing within the low-voltage junction box, which is desirable for preventing electric shock accidents involving pedestrians.

[0013] In addition, it is desirable that the wall contact portion, the cured resin forming portion, and the pipe contact portion be made of a flexible material so that their shape can be deformed to fit the pipe and pipe opening, thereby improving waterproofing efficiency.

[0014] Here, it is desirable that the wall-contacting portion be made of a sponge having a predetermined thickness, as this allows the shape to be deformed to fit the pipe and the pipe opening, thereby improving waterproofing efficiency.

[0015] In addition, it is desirable that the above-mentioned tube-contacting portion has a shape that narrows in the axial direction from the extended end region, so that even when resin is injected into the cured resin forming portion and the tube-contacting portion, the resin is prevented from flowing down to the extended end region of the tube-contacting portion. Effects of the invention

[0016] According to the present invention, pedestrian electric shock accidents can be prevented by ensuring waterproofing inside the low-voltage junction box, durability can be improved by enhancing the structural strength of the low-voltage junction box, and the failure of cable connectors caused by the intrusion of foreign matter into the junction box can be prevented.

[0017] In addition, by injecting resin into the curing resin forming part and the pipe contact part while the wall contact part is in close contact with the pipe opening, structural strength is improved, and pedestrian electric shock accidents can be prevented by ensuring waterproofing within the low-voltage junction box. Furthermore, since the shape can be deformed to fit the pipe and pipe opening, waterproofing efficiency can be enhanced.

[0018] In addition, it can be accurately positioned to wrap around the pipe installed in the low-pressure connection box port and can be fitted tightly to the shape of the port, thereby enhancing the waterproofing effect.

[0019] In addition, even when resin is injected into the curing resin forming section and the tube contact section, it has the effect of preventing the resin from flowing down to the extended end region of the tube contact section. Brief explanation of the drawing

[0020] Figure 1 is an example of a conventional low-voltage junction box and manhole. Figure 2 is an example of an assembled conduit for a conventional extra-high pressure manhole. Figure 3 is an example of the construction of a conventional low-voltage connection box corrugated conduit. FIG. 4 is an exemplary diagram of a waterproofing device for a low-pressure connection box conduit according to the present invention. Figure 5 is an operation diagram of a waterproofing construction method for a low-voltage junction box conduit using a waterproofing device for a low-voltage junction box conduit. Specific details for implementing the invention

[0021] Hereinafter, a waterproofing device (1) for a low-pressure connection box pipe opening according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0022] FIG. 4 is an exemplary diagram of a waterproofing device (1) for a low-pressure connection box pipe opening according to the present invention, and FIG. 5 is an operation diagram of a waterproofing construction method for a low-pressure connection box pipe opening using the waterproofing device (1).

[0023] Referring to FIGS. 4 and FIGS. 5, the configuration of the waterproofing device (1) for the low-pressure connection box conduit opening is explained.

[0024] The low-pressure connection box pipe opening waterproofing device (1) includes a wall contact part (10), a resin injection port (20), a cured resin forming part (30), and a pipe contact part (40).

[0025] The wall contact portion (10) is positioned in close contact with the conduit opening of the low-pressure connection box. The wall contact portion (10) may be made of a flexible material. The wall contact portion (10) may be formed by being separated in the same direction from the axis. The wall contact portion (10) may be made of a sponge having a predetermined thickness.

[0026] The resin injection port (20) is formed in one area of ​​the wall contact portion (10) and is configured for injecting resin.

[0027] The curing resin forming part (30) extends from the wall contact part (10) to form a curing space in which the resin injected through the resin injection port (20) is cured. The curing resin forming part (30) may be made of a flexible material. The curing resin forming part (30) may be formed by being separated in the same direction from the axis.

[0028] The pipe contact portion (40) extends from the cured resin forming portion (30) while narrowing, with a predetermined distance from the outer surface of the pipe connected to the pipe opening. The pipe contact portion (40) may be made of a flexible material. The pipe contact portion (40) may be formed by being separated in the same direction from the axis. The pipe contact portion (40) may have a shape that narrows in the axial direction from the extended end region.

[0029] A method for waterproofing a low-pressure junction box conduit opening according to the present invention comprises the steps of: installing a corrugated pipe in the low-pressure junction box; unfolding a waterproofing device for the low-pressure junction box conduit opening, which is formed by separating it from the same direction from the axis, to accommodate the corrugated pipe; positioning a wall-contacting portion of the waterproofing device for the low-pressure junction box conduit opening in close contact with the conduit opening of the low-pressure junction box while the corrugated pipe is accommodated; sealing the gap between the conduit opening and the wall-contacting portion with an adhesive tape to finish the seal; and mixing a resin with a hardener and injecting it into a resin injection port formed in a region of the wall-contacting portion for injecting the resin.

[0030] Another method for waterproofing a conduit port of a low-pressure junction box comprises the steps of: installing a corrugated pipe in the low-pressure junction box; a wall-contacting part formed of a sponge having a predetermined thickness and made of a flexible material, disposed in close contact with the conduit port of the low-pressure junction box; a resin injection port formed in one area of ​​the wall-contacting part for injecting resin; a curing resin forming part extending from the wall-contacting part and having a curing space formed for curing the resin injected through the resin injection port; and a conduit-contacting part extending while narrowing from the curing resin forming part with a predetermined distance from the outer surface of the conduit connected to the conduit port and narrowing in the axial direction from the extended end area; and the step of unfolding a waterproofing device for a low-pressure junction box conduit port, which is formed by separation in the same direction from the axis, to accommodate the corrugated pipe; and, while accommodating the corrugated pipe, the wall-contacting part of the waterproofing device for a low-pressure junction box conduit port is the [ ] of the low-pressure junction box. The method includes the steps of: placing the pipe opening in close contact with the pipe opening; sealing the gap between the pipe opening and the wall-contacting portion with adhesive tape to finish the seal; and mixing the resin with a hardener and injecting it into a resin injection port formed in a specific area of ​​the wall-contacting portion for injecting the resin.

[0031] FIG. 4 is an exemplary diagram of a waterproof device (1) for a low-pressure connection box conduit according to the present invention.

[0032] FIG. 4 (a) The wall contact portion (10), the cured resin forming portion (30), and the pipe contact portion (40) are in a state where they are not separated in the same direction from the axis and maintain a tubular shape.

[0033] Fig. 4 (b) The wall contact portion (10), the cured resin forming portion (30), and the pipe contact portion (40) are separated in the same direction from the axis so as to accommodate the pipe.

[0034] Here, the wall contact portion (10), the curing resin forming portion (30), and the pipe contact portion (40) are made of a transparent material so that the injection status can be visually checked during resin injection.

[0035] In addition, the resin can be mixed with epoxy and a hardener during construction and injected into the resin injection port (20) where needed. This resin has the characteristic of being fully cured after 30 minutes of injection. The cured resin has excellent mechanical strength and 100% insulation, waterproofing, and moisture-proof properties, and the resin injection process is easy and can be used semi-permanently.

[0036] FIG. 5 is an operation diagram of a low-pressure connection box pipe opening waterproofing construction method using a low-pressure connection box pipe opening waterproofing device (1).

[0037] *37° 5 (a) Install a corrugated pipe in the low-voltage connection box.

[0038] Fig. 5 (b) After unfolding the resin injection type pipe opening mold, attach it to the pipe.

[0039] Fig. 5 (c) A resin injection type pipe opening frame is constructed to match the shape of the corrugated pipe, and a wall-adhering part made of sponge material is attached to the wall side.

[0040] Fig. 5 (d) The gaps of the resin injection type pipe opening frame are finished by applying adhesive tape, and the opposite side of the wall is constructed in the same way.

[0041] FIG. 5 (e) shows the resin mixed with a hardener and injected into the resin injection port of the pipe opening mold, with the resin filling the wall contact portion (10), the cured resin forming portion (30), and the pipe contact portion (40). After about 30 minutes of resin injection, the resin is completely cured. The cured resin filled between the wall of the manhole (or low-pressure connection box) and the gap of the corrugated pipe fixes and waterproofs the pipe opening.

[0042] Fig. 5 (f) shows the final completed construction.

[0043] Modifiable embodiments other than the above embodiments are described.

[0044] Construction can be made easier by forming the wall-contacting portion with a stepped shape and coating the stepped wall with adhesive, then unfolding the waterproofing device for the low-pressure connection box conduit opening, which is formed by separation in the same direction from the axis, surrounding the corrugated pipe, and finally adhering the adhesive coated on the stepped wall to the inside of the low-pressure connection box so that the wall-contacting portion is adhesively bonded to the inside of the low-pressure connection box.

[0045] It may further include a sealing member made of a ring-shaped sponge material. This sealing member is configured to block the outer conduit opening of the low-pressure connection box.

[0046] With the above-described waterproofing device (1) for the low-voltage connection box conduit and waterproofing construction method for the low-voltage connection box conduit, pedestrian electric shock accidents can be prevented by ensuring waterproofing inside the low-voltage connection box, durability can be improved by increasing the structural strength of the low-voltage connection box, and failure of cable connection materials due to foreign matter intrusion inside the connection box can be prevented.

[0047] In addition, by injecting resin into the curing resin forming part and the pipe contact part while the wall contact part is in close contact with the pipe opening, structural strength is improved, and pedestrian electric shock accidents can be prevented by ensuring waterproofing within the low-voltage junction box. Furthermore, since the shape can be deformed to fit the pipe and pipe opening, waterproofing efficiency can be improved.

[0048] In addition, it can be accurately positioned to wrap around the pipe installed in the low-pressure connection box port, and since it can be tightly fitted to the shape of the port, the waterproofing effect can be enhanced.

[0049] In addition, even when resin is injected into the curing resin forming section and the tube contact section, it is possible to prevent the resin from flowing down to the extended end area of ​​the tube contact section. Explanation of the symbols

[0050] 1: Waterproofing device for low-voltage connection box conduit opening 10: Wall-mounted part 20: Resin injection port 30: Curing resin forming part 40: Pipeline contact part

Claims

Claim 1 A waterproofing device for a low-pressure connection box conduit opening, comprising: a wall-contacting portion disposed in close contact with the conduit opening of the low-pressure connection box; a resin injection port formed in one area of ​​the wall-contacting portion for injecting resin; and a curing resin forming portion extending from the wall-contacting portion and having a curing space formed therein for curing the resin injected through the resin injection port. A waterproofing device for a low-pressure connection box conduit port having a flexible material and a sponge wall-contact portion, comprising a conduit contact portion that extends while narrowing from the cured resin forming portion and has a predetermined distance from the outer surface of the conduit connected to the conduit port, wherein the wall-contact portion, the cured resin forming portion, and the conduit contact portion are made of a transparent material so that the injection status can be visually checked during resin injection, and are formed separated from the same direction from the axis, wherein the wall-contact portion has a stepped shape with respect to the cured resin forming portion, and the wall-contact portion is adhesively bonded to the inside of the low-pressure connection box by coating an adhesive on the stepped wall, and further comprising a sealing member made of a ring-shaped sponge material on the outer conduit port of the low-pressure connection box, wherein the wall-contact portion, the cured resin forming portion, and the conduit contact portion are made of a flexible material, and the wall-contact portion is made of a sponge having a predetermined thickness.

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