KR20150005067A - Structure for connecting spiral-wave formed pipes - Google Patents

Structure for connecting spiral-wave formed pipes Download PDF

Info

Publication number
KR20150005067A
KR20150005067A KR1020130078328A KR20130078328A KR20150005067A KR 20150005067 A KR20150005067 A KR 20150005067A KR 1020130078328 A KR1020130078328 A KR 1020130078328A KR 20130078328 A KR20130078328 A KR 20130078328A KR 20150005067 A KR20150005067 A KR 20150005067A
Authority
KR
South Korea
Prior art keywords
spiral
tube
helical
sheet
groove
Prior art date
Application number
KR1020130078328A
Other languages
Korean (ko)
Inventor
주수영
Original Assignee
주식회사 아주미
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 아주미 filed Critical 주식회사 아주미
Priority to KR1020130078328A priority Critical patent/KR20150005067A/en
Publication of KR20150005067A publication Critical patent/KR20150005067A/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
    • F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0462—Tubings, i.e. having a closed section
    • H02G3/0468—Corrugated
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/10—Installations of electric cables or lines in or on the ground or water in cable chambers, e.g. in manhole or in handhole

Abstract

Provided in the present invention is a structure for connecting spiral-wave formed pipes, which is to continuously connect spiral-wave formed pipes (12) placed between manholes in order to lay a power cable or a telecommunication cable under the ground. The structure for connecting spiral-wave formed pipes comprises: a spiral end pipe (10) where a straight pipe unit (14) is extended at the end thereof and where radial flanges (16) are formed at the end of the straight pipe unit (14); a welding sheet (18) which is inserted into a spiral insertion groove (22) formed in an inner spiral groove (20) on the spiral end pipe (10); and a packing (36) which is included between two radial flanges (16) when fastening the two facing radial flanges (16) in the spiral end pipe (10) using a blot-nut fastening fixture (38) in order to connect the two spiral-wave formed pipes (12).

Description

[0001] STRUCTURE FOR CONNECTING SPIRAL-WAVE FORMED PIPES [0002]

The present invention relates to a connection structure for connecting ends and ends of a spiral corrugated tube, and more particularly to a connection structure of a spiral corrugated tube using a spiral tube connected to an end of a spiral corrugated tube without leakage.

In order to install a power cable or telecommunication cable in the ground, a spiral wave tube is arranged between the manhole and the manhole, and a power cable or an electric communication cable is installed in the spiral wave tube. The spiral corrugated pipe used for the installation of power cable or telecommunication cable is made of durable material because it is buried in the ground. In the process of connecting the end and the end of several helical corrugated pipes, Do not let them penetrate. Normally the spiral corrugated tube is made of polyethylene (PE) and a separate joint pipe is used to connect the end and the end. Conventionally, such a joint pipe is fixed on both side ends of a spiral corrugated pipe connected for connection, and a rubber pipe is inserted between the end portion of the spiral corrugated pipe and the joint for waterproofing, or a packing is inserted into the spiral groove of the spiral corrugated pipe Ensure that water does not penetrate into the spiral groove from the outside of the spiral tube. Such a coupling tube is disclosed in Registration Practical Utility Model Bulletin 20-0348290 and 20-0402687.

However, this prior art joint pipe can effectively prevent the water from penetrating into the inside along the spiral groove of the outer surface of the spiral tube, but when an external force separating the spiral tube and the spiral tube is applied, There is a drawback that the means to maintain the state is weak. Therefore, it is known to fasten the two spiral corrugated tubes adjacent to each other with a bolt-nut fastener through the flange of the helical tube, but the spiral corrugated tube to be connected and the helical corrugated tube There is a possibility that the water may permeate into the inside through the gap between the spiral end tubes which are spirally engaged with the end portions of the spiral end tubes. In view of this point, a method of winding water on the end of the spiral end tube and the outer surface of the spiral tube on the end of the spiral end tube by winding the adhesive tape a plurality of times may be used but this makes the connection work of the spiral tube tube cumbersome There is a problem that the waterproof effect is not reliable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a spiral wound corrugated pipe having a spiral corrugated pipe and a flanged spiral pipe, The inner surface of the helical tube is fixed by electric fusion or electrofusion fusion so that the gap between the helical tube and the helical tube is sealed to prevent water from penetrating from the outside.

Another object of the present invention is to make two spiral corrugated tubes, each having a flanged spiral finned tube coupled thereto, coupled to corresponding flanges so that the spiral corrugated tubes can be continuously connected.

To this end, the present invention provides a spiral-wave tube connection structure for continuously connecting a spiral wave tube disposed between a manhole and a manhole in order to install a power cable or an electric communication cable in the ground. According to the present invention, there is provided a spiral tube having an end of a straight tube portion and a radial flange formed at an end of the straight tube portion, a fused sheet inserted into a spiral insertion groove formed in an inner spiral groove of the spiral end tube, And a packing interposed between the two radial flanges when fastening the two radial flanges of the opposite helical end with bolt-nut fasteners.

In one embodiment of the present invention, there are two semicircular ribs arranged in a circular shape on the back side of the radial flange for reinforcement of the radial flange fastened with the bolt-nut fastener in an opposed state.

In the present invention, the fusing sheet is inserted and arranged in the spiral insert groove formed in the inner spiral groove in the inside of the spiral end pipe. The length of the helical insertion groove formed in the inner helical groove in the helical hollow tube is a length corresponding to one pitch from the helical hollow of the helical hollow tube to the length corresponding to the width of the welding sheet.

The fusible sheet is formed into a spiral shape so as to have a cross-sectional shape of "C ", and the heating wires are arranged in a zigzag shape throughout the heating wire. A connection piece is formed at one end of the fusion sheet.

The fusing sheet is an electric fusing sheet or an electro-foaming fusing sheet.

The two radial flanges of the helical end are arranged opposite to each other when the two helical corrugated tubes are connected to each other, and the two radial flanges are fixed by two semicircular clamps into which the peripheral portions of the two radial flanges are inserted and fixed.

In the present invention, the helical wave tube to which the helical tube is coupled may be coupled to a radial flange of a tube adapter in which the radial flange of the helical tube is assembled to the manhole in order to place a power cable or an electrical communication cable in the ground.

The present invention will now be described in more detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a flanged spiral single tube used in a connection structure of a spiral tube according to the present invention; FIG.
Fig. 2 is a cross-sectional view showing a section of a spiral end pipe before the fusing sheet is inserted therein. Fig.
Fig. 3 is a plan view showing a developed fusion sheet inserted into the spiral single tube. Fig.
Fig. 4 is a perspective view of a fusing sheet showing that the fusing sheet is formed in accordance with the internal spiral groove of the spiral single tube for inserting the fusing sheet into the inside of the spiral single tube. Fig.
Fig. 5 is a front view of the fusing sheet shown in Fig. 4; Fig.
6 is an enlarged sectional view of a portion indicated by circle A in Fig. 2;
7 is a cross-sectional view similar to that of FIG. 6, showing the insertion of a fusing sheet into the internal spiral groove of the spiral end.
Figs. 8 to 10 are explanatory diagrams for explaining coupling of a spiral tube to an end of a spiral tube to connect two spiral tube tubes. Fig.
11 is a sectional view taken along the line XI-XI in Fig.
12 is a perspective view of a spiral end tube of another embodiment having another type of flange fastening means;
Figure 13 is a front view showing the connection of two spiral corrugated tubes using the spiral tube shown in Figure 12;
14 is a sectional view taken along the line XIV-XIV in Fig.
15 is a cross-sectional view showing the coupling of a spiral corrugated tube with a spiral end tube to an end of a manhole tube adapter.

FIG. 1 shows a spiral end tube 10 used in the connection structure of the spiral corrugated tube of the present invention. This is joined to the end of the spiral corrugated tube 12 as shown in FIG. 8, As shown in FIG.

At one end of the spiral end tube 10, a short straight pipe portion 14 having a diameter corresponding to the minimum inner diameter of the spiral end tube 10 is extended and a radial flange 16 is formed at an end thereof.

The spiral of the spiral end tube 10 and the spiral of the spiral tube 12 are the same in pitch so that the spiral end tube 10 can be spirally engaged with the outer surface of the spiral tube 12, The inner diameter of the protruding portion substantially coincides with the outer diameter of the helical projecting portion of the helical wave tube 12 and the outer diameter of the helical groove so that when the helical hollow tube 10 is helically engaged with the helical wave tube 12, And the axial length of the spiral portion in the spiral end tube 10 is of a size having three pitch spirals.

It is necessary to prevent physical penetration through the gap between the inner surface of the helical tube 10 and the outer surface of the helical tube 12 when the helical tube 10 is coupled to the end of the helical tube 12 . To this end, a fusing sheet 18 is interposed between the inner surface of the spiral end tube 10 and the outer surface of the spiral tube 12. [

When the fusion splicing sheet 18 is inserted into the end portion of the helical hollow tube 10 and the helical hollow tube 10 is coupled to the end portion of the helical tube 12, the inner surface of the helical hollow tube 10, (Not shown).

To this end, the fusing sheet 18 is provided with a spiral insertion groove 22 formed in the inner spiral groove 20 having a length slightly longer than the length corresponding to one pitch in the spiral end pipe 10.

The fusing sheet 18 is a synthetic resin sheet which is melted when the material is heated or a synthetic resin sheet which is foamed together with melting. As shown in FIG. 3, the heating wires 24 are arranged in a zigzag manner And connected to the power source through the externally extended heating wire terminals 26 and 26 ', so that the welding sheet 18 is melted and / or foamed. In this fusing sheet 18, a temperature sensor 28 is disposed and the sensor terminal 30 extends to the outside. The fusing sheet 18 is inserted and arranged in the spiral insertion groove 22 of the inner spiral groove 20 having a length slightly longer than the length corresponding to one pitch p in the spiral end tube 10 So that the cross section is shaped like a "C" For example, the length of the fusing sheet 18 is set to a length slightly longer than the length corresponding to one pitch of the spiral short tube 10, for example, a length corresponding to one pitch, Length is the combined length. Therefore, when the fusing sheet 18 is formed into a spiral shape, the end portion of the fusing sheet 18 will be overlapped laterally by a length corresponding to the width of the fusing sheet 18. As described in detail later, when the fusing sheet 18 is formed into a spiral shape and inserted into the spiral insertion groove 22 formed in the inner spiral groove 20 of the spiral end tube 10, the fusion sheet 18 A connecting piece 32 is formed on the side surface of one end of the fusing sheet 18 (refer to FIGS. 3 to 5) so that the end and the end of the fusing sheet 18 can be connected. In FIGS. 4 and 5, the heating wire terminals 26 and 26 'and the sensor terminal 30 are not shown to simplify the drawing.

The spiral insertion groove 22 formed in the inner spiral groove 20 of the spiral single-ended pipe 10 into which the spiral-shaped fusion sheet 18 is inserted is inserted into the fusion sheet 18 when the fusion- The helical portion formed with the helical insertion groove 22 will have an externally enlarged shape as much as the thickness of the fusing sheet 18 because the inner surface of the fused sheet 18 should match the inner surface of the inner helical groove 20. [

As described above, the heating wire terminals 26 and 26 'of the fusing sheet 18 inserted into the spiral inserting groove 22 formed in the inner helical groove 20 of the helical hollow tube 10 and the sensor terminal 30 are arranged in the same manner as in Fig. 1 A cable of a temperature data mechanism for obtaining data related to temperature from a power source and a temperature sensor 28 for generating heat of the heating wire 24 from the outside and extending outside the spiral single pipe 10 as shown in FIG. ) To be connected.

2, the helical insertion groove 22 formed in the inner helical groove 20 of the helical hollow tube 10 is formed in the helical hollow tube 10 in the vicinity of the opposite end of the end where the flange 16 is joined, Is formed in the internal spiral groove (20) of the body (10).

Such a spiral end tube 10 is spirally coupled to the end of the spiral tube 12 having a continuous spiral through the entire length as shown in Fig. For this purpose, the operator rotates the spiral short tube 10 so that the spiral connection can be made at the end of the spiral tube 12. [ At this time, the fusing sheet 18 occupies a portion of the spiral groove corresponding to the length corresponding to one pitch in the internal spiral groove 20 of the spiral short tube 10 by the length corresponding to the width of the fusing sheet 18 And a connecting piece 32 formed at one end of the fusing sheet 18 is disposed at a portion where the end portion and the end of the fusing sheet 18 are connected to each other and the spiral inserting groove 22 The fusing sheet 18 disposed on the fusing sheet 18 is formed into a spiral having a length of one pitch or more and at the same time it will form a closed loop where the end portion and the end of the fusing sheet 18 are connected by the connecting piece 32.

Thereafter, a cable of a temperature data mechanism for obtaining temperature data is connected to the sensor terminal 30 of the temperature sensor 28 disposed in the fusing sheet 18 to check the data relating to the temperature rise, The fusing sheet 18 is melted by the heat generated by the heating wire 24 by connecting a power source to the heating wire terminals 26 and 26 'of the heating wires 24 disposed on the heating wire 24, The spiral insertion groove 22 formed in the inner spiral groove 20 of the spiral end tube 10 when the portion of the spiral tube 12 and the portion of the spiral tube 12 are partially melted and the heat generation of the heating wire 24 is completed and cooled, The fusion-bonding sheet 18 and the connecting piece 32 are fused in a state where a spiral portion having a length of one pitch or more is connected to an end portion and a side portion overlapping in the lateral direction.

Thus, the spiral short tube 10 and the helical tube 12 are firmly engaged with each other, and a gap between them, in particular, a part of the continuous spiral groove is closed by the welded portion of the fusion sheet 18, Water can be reliably prevented from permeating.

The helical wave tube 12 to which the helical hollow tube 10 is coupled at the end portion is connected to the helical wave tube 12 by using the flange 16 of the helical hollow tube 10, Can be connected to each other.

That is, as shown in Figs. 1 and 9, at the tip end of the helical tube 10 coupled to the helical tube 12, the straight tube 14 is extended and a radial flange 16 is formed. The helical wave tube 12 to be connected continuously is connected using this flange 16 of the helical hollow tube 10. As shown in FIG. 9, the two helical wave tubes 12 to be connected are disposed such that the flange 16 of the helical hollow tube 10 can be opposed at the end thereof. The flange 16 to be fastened in the opposite state is provided with two semicircular reinforcements 34 and 34 'on the backside of the flange 16 for reinforcement and a packing 36 between the two flanges 16 facing each other And each of the rear side semicircular ribs 34 and 34 'of the two flanges 16 opposed to each other is fastened and fixed by a plurality of bolt-nut fasteners 38 which are respectively aligned and arranged in a circle (refer to FIGS. 10 and 11) ).

12 to 14 show another embodiment in which the flange 16 of the helical tube 10 used for connecting the helical tube 12 is fastened and fixed. That is, in the embodiment shown in Figs. 12 to 14, two helical wave tubes 12 to be connected are arranged such that the flange 16 of the helical hollow tube 10 at its end is opposed, and between the opposed two flanges 16 Two semicircular clamps 40 are used in which two flanges 16 and a peripheral portion of the packing 36 are inserted and fixed to the periphery of the opposed two flanges 16 with the packing 36 interposed therebetween. The semicircular clamps 40 are used in pairs and have an insert 42 on the inner surface of which two flanges 16 and a peripheral portion of the packing 36 are inserted and on both ends of the semicircular clamp 38, And the two semicylindrical clamps 40 are inserted through the inserting portion 42 of the inner surface of the clamp plate 40 so that the two flanges 16 and the peripheral portion of the packing 36 are inserted, The two flanges 16 of the opposing helical end tube 10 can be fixedly coupled by fixing the both side fixing plates 44 of the clamp 40 with the bolt-nut fastening members 46. [

15 shows the helical tube 12 to which the helical tube 10 is coupled is coupled to a tube adapter 50 which is assembled to a manhole 48 for placing a power cable or an electrical communication cable in the ground. The spiral corrugated tube 12 is connected to the channel adapter 50 of the manhole 48 while the helical tube 12 is continuously connected between the manhole and the manhole to constitute a channel through which the cable is installed.

The flange 16 of the helical tube 10 is coupled to one end of the tube adapter 50 so as to fix the helical tube 10 of the helical tube 12 to the tube adapter 50 of the manhole 48 A radial flange 52 is formed and an axial peripheral edge 54 is formed on the outer periphery thereof. The flange 16 of the helical tube 10 coupled to the end of the helical tube 12 has two semi-circular ribs 34 and 34 'arranged in a circular shape on the back thereof and a packing 36 A packing 36 which is coupled to the radial flange 52 of the conduit adapter 50 and into which the axial peripheral edge 54 formed on the outer periphery of the radial flange 52 is inserted and the flange 16). In this state, the radial flange 52 of the duct adapter 50, the packing 36, the flange 16 of the spiral end tube 10 and the reinforcing rods 34, 34 ' And is fastened with the sphere 56.

The present invention relates to a spiral wound corrugated tube having a plurality of spiral wound corrugated tubes and a plurality of spiral wound corrugated tubes having a plurality of spiral wound corrugated tubes. The present invention relates to a bolt and nut fastener for a bolt and a bolt for fastening a bolt to a bolt, A nut fastener, 48: a manhole, 50: a duct adapter, 52: a radial flange, 54: a peripheral jaw, 56: a bolt-nut fastener.

Claims (10)

A spiral-wave tube connection structure for continuously connecting a spiral-wave tube (12) disposed between a manhole and a manhole for installing a power cable or an electric communication cable in the ground,
A spiral end tube 10 in which an end portion of the straight pipe portion 14 is extended and a radial flange 16 is formed at an end portion of the straight pipe portion 14,
A fusing sheet 18 inserted into the spiral insertion groove 22 formed in the inner spiral groove 20 of the helical hollow tube 10,
When the two radial flanges 16 of the helical end tube 10 opposed to each other to connect the two helical corrugated tubes 12 are fastened with bolt-nut fasteners 38, The packing (36)
Wherein the spiral tube connection structure comprises: 2. A method according to claim 1, characterized in that the radial flange (16) fastened with the bolt-nut fastener (38) in an opposed state is provided with two And a semicircular reinforcing bar (34, 34 '). The spirally wound corrugated pipe connection structure according to claim 1, wherein the fusing sheet (18) is inserted and arranged in a spiral insertion groove (22) formed in an inner spiral groove (20) inside the spiral end pipe (10). 4. The method according to claim 3, wherein a length of the spiral insertion groove (22) formed in the inner spiral groove (20) within the spiral end pipe (10) is a length corresponding to one pitch from the spiral of the spiral end pipe And a length corresponding to a width of the fusing sheet (18). 4. The spiral tube connecting structure according to claim 3, wherein the fusing sheet (18) is formed into a spiral shape with a cross section of a "C" shape, and a heating wire (24) is arranged in a staggered shape over the entire area. 4. The spiral tube connecting structure according to claim 3, wherein a connecting piece (32) is formed at one end of the fusible sheet (18). The spirally wound corrugated pipe connection structure according to claim 3, wherein the fusing sheet (18) is an electric fusing sheet. The spiral tube connecting structure according to claim 3, wherein the fusing sheet (18) is an electrofusion fused sheet. 2. The method according to claim 1, wherein the two radial flanges (16) of the helical end tube (10) are arranged opposite to each other when the two helical tube pipes (12) And is fixed by two semicircular clamps (40). The method of claim 1, wherein the helical wave tube (12) coupled with the helical hollow tube (10) comprises a radial flange (16) of the helical hollow tube (10) 48) is coupled to the radial flange (52) of the duct adapter (50).
KR1020130078328A 2013-07-04 2013-07-04 Structure for connecting spiral-wave formed pipes KR20150005067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020130078328A KR20150005067A (en) 2013-07-04 2013-07-04 Structure for connecting spiral-wave formed pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020130078328A KR20150005067A (en) 2013-07-04 2013-07-04 Structure for connecting spiral-wave formed pipes

Publications (1)

Publication Number Publication Date
KR20150005067A true KR20150005067A (en) 2015-01-14

Family

ID=52477002

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020130078328A KR20150005067A (en) 2013-07-04 2013-07-04 Structure for connecting spiral-wave formed pipes

Country Status (1)

Country Link
KR (1) KR20150005067A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107284375A (en) * 2017-06-19 2017-10-24 芜湖侨云友星电气工业有限公司 A kind of automobile back door wire harness sheath
KR20190134019A (en) 2018-05-24 2019-12-04 한국전력공사 Structure for prohibiting water leakage of manhole and Method for assemblying the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107284375A (en) * 2017-06-19 2017-10-24 芜湖侨云友星电气工业有限公司 A kind of automobile back door wire harness sheath
CN107284375B (en) * 2017-06-19 2020-11-10 宁波兴亚汽车零部件有限公司 Automobile rear door wiring harness sheath
KR20190134019A (en) 2018-05-24 2019-12-04 한국전력공사 Structure for prohibiting water leakage of manhole and Method for assemblying the same

Similar Documents

Publication Publication Date Title
FI72793B (en) INSTALLATIONSFOERFARANDE FOER PREFABRICERADE, VAERMEISOLERADE ROER OCH DETTA BEROERANDE SVETSARRANGEMANG.
EP2800921B1 (en) Heat-shrinkable tube covering
AU2001234836B2 (en) Apparatus for forming field joints on plastic coated pipe
AU2001234836A1 (en) Apparatus for forming field joints on plastic coated pipe
EP2994292B1 (en) Method and apparatus for joining or repairing a pipe system
KR20150005067A (en) Structure for connecting spiral-wave formed pipes
JP5820169B2 (en) Insulated tube and method for manufacturing the same
AU2011288891B2 (en) Internal electrofusion ring coupler
JP7186053B2 (en) Intermediate connection of superconducting cable, superconducting cable line and method of intermediate connection of superconducting cable
JPH08244116A (en) Corrugated pipe welding method and welding device
KR101214144B1 (en) Method of connecting sewer pipes using electro-fusion connector
CN113915438A (en) Ultra-deep buried composite pipeline anti-leakage sealing structure
JP7186052B2 (en) Intermediate connection of superconducting cable, superconducting cable line and method of intermediate connection of superconducting cable
WO2010027242A2 (en) Pipe joint assembly for connecting underground pipes
KR101400290B1 (en) Heat shrinkable sleeve for coupling pipes
CN106678473A (en) Sheet type non-leakage rapid hot melting connecting method and connector
KR102202155B1 (en) A Connecting Method for Plastic pipe and, connecting apparatus thererof
KR200184213Y1 (en) Device for connecting underground pipes
JP2012167768A (en) Electrically fusing joint for covered polyethylene tube and polyethylene tube channel using the same
CN215568864U (en) Hollow wall winding pipe connecting structure
KR101092381B1 (en) Constructing method of corrugated pipe for power line and connecting pipe therof and adhering apparatus thereof
JP2017198261A (en) Joint with electric fusion receiving port and method for connecting piping using joint with electric fusion receiving port
KR100433812B1 (en) a spilt type connector for fusion jointing plastic pipe
CN214999942U (en) Steel band pipe socket formula electrothermal welding connection structure
KR101756925B1 (en) Supporting plate for pipe connecting apparatus

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination