KR20120034474A - Structure of frp case for jointer - Google Patents

Structure of frp case for jointer Download PDF

Info

Publication number
KR20120034474A
KR20120034474A KR1020100096066A KR20100096066A KR20120034474A KR 20120034474 A KR20120034474 A KR 20120034474A KR 1020100096066 A KR1020100096066 A KR 1020100096066A KR 20100096066 A KR20100096066 A KR 20100096066A KR 20120034474 A KR20120034474 A KR 20120034474A
Authority
KR
South Korea
Prior art keywords
frp
frp case
case
shrink tube
heat shrink
Prior art date
Application number
KR1020100096066A
Other languages
Korean (ko)
Inventor
김현주
최만옥
Original Assignee
대한전선 주식회사
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 대한전선 주식회사 filed Critical 대한전선 주식회사
Priority to KR1020100096066A priority Critical patent/KR20120034474A/en
Publication of KR20120034474A publication Critical patent/KR20120034474A/en

Links

Images

Classifications

    • 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
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/14—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for joining or terminating cables
    • 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
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
    • H02G15/115—Boxes split perpendicularly to main cable direction
    • 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
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
    • H02G15/1806—Heat shrinkable sleeves

Landscapes

  • Cable Accessories (AREA)

Abstract

The present invention relates to an FRP case for protecting an ultra-high voltage cable junction box, and more particularly, to an FRP case for protecting an ultra-high voltage cable junction box in which a structure of a coupling part in which mechanical defects are easily generated when fastening between right and left FRP cases is changed.
Joiner protection FRP case sealing structure according to the present invention, the end of each of the first FRP case and the second FRP case is seated, the connection box of the ultra-high voltage cable is coupled to each other, the combined state of the end of the first FRP case And a heat shrink tube having a width wider than the distance between the position and the position of the end of the second FRP case.
According to this configuration, it is possible to improve the quality of the junction box by improving the coupling structure of the FRP case from the flange structure to the heat shrink tube structure, and it is possible to reduce the excessive time investment and the cost required for maintenance.

Description

FRP Case Fastening Structure for Jointer Protection {STRUCTURE OF FRP CASE FOR JOINTER}

The present invention relates to an FRP case for protecting an ultra-high voltage cable junction box, and more particularly, to an FRP case for protecting an ultra-high voltage cable junction box in which a structure of a coupling part in which mechanical defects are easily generated when fastening between right and left FRP cases is changed.

1 illustrates a conventional FRP case (coffin box) for an ultra high voltage cable.

As shown, the conventional FRP case (110a, 110b) is filled with a waterproofing compound (Compound), such as waterproof mixture or asphalt to prevent moisture penetration into the space formed inside the body (110).

Injection holes 120 for filling the waterproofing material are formed at the upper end sides of the FRP cases 110a and 110b, and the left and right FRP cases 110a and 110b are bolt-assembled by the left flange 130a and the right flange 130b, The other end is provided with a cable inlet (A) through which the ultra-high voltage cable is introduced.

Above the cable inlet A side, a ground line inlet B through which the ground line is introduced is formed.

The conventional FRP case of such a structure has a structure that is fastened by bolts while the left flange (130a) and the right flange (130b) is facing, the FRP case must undergo a severe watertight test, etc. according to the function to protect the junction box Therefore, the mechanical load tightened by the bolt is over, so that the bolt hole portions formed in the flanges 130a and 130b do not withstand the mechanical load and are destroyed or cracks are generated. As a result, there is a problem that excessive time and cost are consumed due to repair after the assembly process of the ultra-high voltage cable due to such mechanical defects.

The present invention has been made to solve the above problems, to improve the quality of the junction box by preventing the occurrence of defects after construction by improving the coupling structure of the FRP case used for protecting the ultra-high voltage cable junction box.

The joint protection FRP case sealing structure according to the present invention for solving the above problems, the ends of each of the first FRP case and the second FRP case on which the junction box of the ultra-high voltage cable is seated are coupled to each other, in the combined state And a heat shrink tube having a width wider than the distance between the position of the end of the first FRP case and the position of the end of the second FRP case.

Here, the end of the first FRP case and the end of the second FRP case in the state coupled to the end located on the outside is sealed and cured by silicone, after the heat compression of the heat shrink tube, both ends of the heat shrink tube is PVC taped It is preferred to be treated.

Here, it is preferable that the step | step difference is formed in at least one of the edge part of the said 1st FRP case, and the edge part of the said 2nd FRP case.

Here, the outer diameter of any one of the end of the first FRP case and the end of the second FRP case may be smaller than the inner diameter of the other end.

According to the configuration of the present invention described above, by improving the coupling structure of the FRP case used for the protection of the ultra-high voltage cable junction box from the flange structure to the heat shrink tube structure, it is possible to improve the quality of the junction box by preventing the occurrence of defects after construction This can reduce excessive time investment and cost.

1 is a structural diagram of a coffin box for a conventional high voltage cable connection box.
FIG. 2 illustrates a FRP case sealing structure for protecting a joint according to a first embodiment of the present invention.
Figure 3 illustrates a joint structure for protecting the FRP case sealing according to the second embodiment of the present invention.
Figure 4 illustrates a joint structure for protecting the FRP case sealing according to the third embodiment of the present invention.
5 is a view illustrating a FRP case sealing structure for protecting a joint according to a fourth embodiment of the present invention.
Figure 6 shows the FRP case sealing structure for protecting the joint according to the fifth embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described for the joint structure of the FRP case sealing structure and its effects according to the present invention.

Joiner described herein means a connection box for the ultra-high voltage cable, FRP case means a so-called coffin box (COFFIN BOX).

The FRP case to which the present invention is applied is applied to a junction box of an ultra high voltage cable for transmitting ultra high voltage power, and the ultra high voltage cable may be a cross-linked-polyethylene (XLPE) or oil (OF) filled cable, and is not limited thereto.

FIG. 2 illustrates a FRP case sealing structure for protecting a joint according to a first embodiment of the present invention, and FIG. 3 illustrates a FRP case sealing structure for protecting a joint according to a second embodiment of the present invention. FIG. 5 illustrates a FRP case sealing structure for protecting a joint according to a third embodiment of the present invention, and FIG. 5 illustrates a FRP case sealing structure for protecting a joint according to a fourth embodiment of the present invention.

The FRP case sealing structure for the joint protector according to the first to fourth embodiments of the present invention differs only in the structure in which end portions of the first FRP case and the second FRP case are connected to each other, and the overall structure is the same. Therefore, hereinafter, the overall structure of the FRP case will be described with reference to FIG. 2, and the end coupling structure in the first to fourth embodiments with difference will be described with reference to FIGS. 2 to 5.

In addition, the 'end' displayed below means an end of the first FRP case and an end of the second FRP case in a portion where the first FRP case and the second FRP case are in contact with each other.

Referring to Figure 2 describes the structure of the FRP case (coffin box) according to the present invention.

The FRP case 200 according to the present invention is formed by combining the first FRP case 210 on the left side and the second FRP case 220 on the right side.

Both ends of the first and second FRP cases (210, 220) has a cable seating portion (211, 221) to which the cable is inserted and seated, and a junction box mounting portion (212, 222) for seating each, respectively The ends 210a and 220a have a structure that is coupled to each other. In addition, the upper layer is formed with the auxiliary body 240 is the ground wire is introduced and seated, and one end of the auxiliary body 240 is formed with an inlet 242 for injecting the ground wire lead-in portion 241 and the compound.

Referring to Section A-A, the first FRP case 210 has an end 210a and the second FRP case 220 also has an end 220a. The end portions 210a and 220a are coupled to each other in a butting manner, and the end portion 210a has a stepped portion in the form of 'b' and the end portion 220a has a stepped portion in the form of the letter 'a'.

The end portion exposed to the outside in the butt-coupled state of the ends 210a and 220a is injected with silicone 231 to be cured, and a heat shrink tube 230 is covered thereon.

It is preferable to use the heat shrink tube 230 whose width (W) is sufficiently larger than the end coupling portion length (L).

When the shrinkage by applying heat in the state that the heat shrink tube 230 is covered, due to the characteristics of the heat shrink tube 230, the heat shrink tube 230 is completely in close contact with the first and second FRP cases (210, 220) The sealing of the second FRP cases 210 and 220 is completed.

Then, both ends of the contracted heat shrink tube 230 is finished with PVC tape 232 or the like.

Referring to Section A-A of FIG. 3, a second embodiment of the present invention is described, wherein the first FRP case 310 has an end 310a and the second FRP case 320 also has an end 320a. Ends 310a and 320a are joined to each other buttally, and end 310a has a stepped portion in the form of a letter 'b' and end 320a is buttally coupled without having a stepped portion.

The end portion exposed to the outside in the butt-coupled state of the ends 310a and 320a is injected with silicone 331 to be cured, and the heat shrink tube 330 is covered thereon.

It is preferable to use the heat shrink tube 330 whose width (W) is sufficiently larger than the end coupling portion length (L).

When the heat shrink tube 330 is covered and contracted by applying heat, the heat shrink tube 330 is completely adhered to the first and second FRP cases 310 and 320 by pressurization due to the characteristics of the heat shrink tube 330. The sealing of the second FRP cases 310 and 320 is completed, and both ends of the heat shrink tube 330 are finished with PVC tape 332 or the like.

Referring to Section A-A of FIG. 4, a third embodiment of the present invention is described, wherein the first FRP case 410 has an end 410a and the second FRP case 420 also has an end 420a. Ends 410a and 420a are coupled to each other buttally, and end 410a does not have a stepped portion, and end 420a is buttally coupled in a state having a stepped portion of the letter 'a'.

The end portions exposed to the outside in the butt-coupled state of the ends 410a and 420a are injected with silicone 431 to be cured, and a heat shrink tube 430 is covered thereon.

It is preferable to use the heat shrink tube 430 whose width (W) is sufficiently larger than the end coupling portion length (L).

When the heat shrink tube 430 is covered and contracted by applying heat, the heat shrink tube 430 is completely adhered to the first and second FRP cases 410 and 420 by pressurization due to the characteristics of the heat shrink tube 430. The sealing of the second FRP cases 410 and 420 is completed, and both ends of the heat shrink tube 430 are finished with PVC tape 432 or the like.

Referring to Section A-A of FIG. 5, a fourth embodiment of the present invention is described, wherein the first FRP case 510 has an end 510a and the second FRP case 520 also has an end 520a. The ends 510a and 520a are coupled to each other, the end 510a has a groove 510b, and the end 520a has a protrusion 520b so that the protrusion 520b is coupled to a portion of the groove 510b so that the first FRP is provided. The case 510 and the second FRP case 520 are fastened.

In the state where the ends 510a and 520a are coupled, the end portion exposed to the outside is injected with silicone 531 to be cured, and a heat shrink tube 530 is covered thereon.

It is preferable to use the heat shrink tube 530 whose width (W) is sufficiently larger than the end coupling portion length (L).

When the heat shrink tube 530 is covered and contracted by applying heat, the heat shrink tube 530 is completely in close contact with the first and second FRP cases 510 and 520 by pressure due to the characteristics of the heat shrink tube 530. The sealing of the second FRP cases 510 and 520 is completed, and both ends of the heat shrink tube 530 are finished with PVC tape 532 or the like.

Referring to Section A-A of FIG. 6, a fifth embodiment of the present invention will be described. The first FRP case 610 has an end 610a and the second FRP case 620 also has an end 620a. The ends 610a and 620a are coupled to each other, and the outer diameter of the end 620a of the second FRP case 620 is inserted into the inner diameter of the end 610a of the FRP case 610.

That is, the other end portion is inserted into one end portion, and as shown in FIG. 6, the outer diameter of the end portion of the first FRP case 610 is smaller than the inner diameter of the end portion of the second FRP case 620. Thus, the first FRP case 610 may be inserted into the second FRP case 620.

In the state in which the ends 610a and 620a are coupled, the end portion exposed to the outside is injected with silicone 631 and cured, and a heat shrink tube 630 is covered thereon.

It is preferable to use the heat shrink tube 630 whose width (W) is sufficiently larger than the end coupling portion length (L).

When the heat shrink tube 630 is covered and contracted by applying heat, the heat shrink tube 630 is pressed against the first and second FRP cases 610 and 620 by pressurization due to the characteristics of the heat shrink tube 630. The sealing of the second FRP cases 610 and 620 is completed, and both ends of the heat shrink tube 630 are finished with a PVC tape 632 or the like.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

200, 300, 400, 500, 600: FRP case
210, 310, 410, 510, 610: first FRP case
220, 320, 420, 520, 620: Second FRP Case
211, 221, 311, 321, 411, 421, 511, 521, 611, 621: cable seat
212, 222, 312, 322, 412, 422, 512, 522, 612, 622: junction box
End: 210a, 220a, 310a, 320a, 410a, 420a, 510a, 520a, 610a, 620a
230, 330, 430, 530, 630: Heat Shrink Tubing
231, 331, 431, 531, 631: silicon
231, 332, 432, 532, 632: PVC tape
240, 340, 440, 540, 640: auxiliary body
241, 341, 441, 541, 641: ground wire lead-in
242, 342, 442, 542, 642: injection hole
510b: groove 520b: protrusion

Claims (4)

End portions of each of the first FRP case and the second FRP case on which the junction box of the ultra-high voltage cable is seated are coupled to each other,
A joint protection FRP case sealing structure, which is heat-compressed by a heat shrink tube having a width wider than the distance between the position of the end of the first FRP case and the position of the end of the second FRP case in a combined state. The method of claim 1,
Sealed and cured by silicone at an end located outside the first FRP case and the end of the second FRP case is coupled,
After heat compression of the heat shrink tube, both ends of the heat shrink tube is PVC taped, FRP case sealing structure for protecting the joint. The method of claim 1,
A stepped structure is formed in any one or more of the end of the first FRP case and the end of the second FRP case, the FRP case sealing structure for protecting the joint. The method of claim 1,
The outer diameter of one end of the end of the first FRP case and the end of the second FRP case is formed smaller than the inner diameter of the other end, FRP case sealing structure for the protector.
KR1020100096066A 2010-10-01 2010-10-01 Structure of frp case for jointer KR20120034474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100096066A KR20120034474A (en) 2010-10-01 2010-10-01 Structure of frp case for jointer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100096066A KR20120034474A (en) 2010-10-01 2010-10-01 Structure of frp case for jointer

Publications (1)

Publication Number Publication Date
KR20120034474A true KR20120034474A (en) 2012-04-12

Family

ID=46136837

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100096066A KR20120034474A (en) 2010-10-01 2010-10-01 Structure of frp case for jointer

Country Status (1)

Country Link
KR (1) KR20120034474A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102664381A (en) * 2012-05-03 2012-09-12 武汉市高科阻燃安全技术有限公司 Fire-proof and explosion-proof wrapping head for cable and manufacturing method thereof
CN102761093A (en) * 2012-06-19 2012-10-31 江苏科耐特高压电缆附件有限公司 Flame-retardant type glass steel anti-explosion shell of intermediate connector
WO2014007464A1 (en) * 2012-07-06 2014-01-09 주식회사 원컨덕터 Protective tube for power cable connection box formed by tube compression and tube expansion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102664381A (en) * 2012-05-03 2012-09-12 武汉市高科阻燃安全技术有限公司 Fire-proof and explosion-proof wrapping head for cable and manufacturing method thereof
CN102761093A (en) * 2012-06-19 2012-10-31 江苏科耐特高压电缆附件有限公司 Flame-retardant type glass steel anti-explosion shell of intermediate connector
WO2014007464A1 (en) * 2012-07-06 2014-01-09 주식회사 원컨덕터 Protective tube for power cable connection box formed by tube compression and tube expansion
KR101365186B1 (en) * 2012-07-06 2014-02-21 (주)원컨덕터 Outer case for power cable joint box formed by reducing and expanding diameter of pipe

Similar Documents

Publication Publication Date Title
KR101091043B1 (en) Joint system of submarine power cable
KR100730517B1 (en) Underground concrete box watertight method and underground concrete box applied to the same
CN104600656B (en) A kind of submerged cable joint water sealed connector
KR20120034474A (en) Structure of frp case for jointer
KR100787577B1 (en) Structure of connect for protecter using cable
KR100959091B1 (en) The apparatus for joining two pipes
KR102342659B1 (en) A rigid joint assembly
KR100674262B1 (en) Structure preventing water leakage of high voltage cable
KR20080109982A (en) A construction method for cable tray
KR101407928B1 (en) Jointing apparatus of corrugate pipes
KR101148777B1 (en) The apparatus for joining two pipes
JP2008303941A (en) Grout hole closing structure for tube, and structure and method for testing water tightness of grout hole
KR20090043645A (en) Coupling structure for corrugate pipe
KR101508139B1 (en) Power culvert joint device
KR102270769B1 (en) Repairing panel for protecting underground distribution line
JP5931036B2 (en) Oil stop structure of terminal connection
KR20150009721A (en) Anchorage apparatus for cable
KR102586453B1 (en) Coupling for a pipe
KR101580547B1 (en) A precast box culvert with watertight band
JP2009100579A (en) Power cable joint and its composition method
KR200417301Y1 (en) An electric wier socket which is used from underwater
KR101677054B1 (en) Prefabricated duct for underground transmission line
KR102179403B1 (en) Packaging for Spiral Waveguide with Improved Water Density
KR102439797B1 (en) Connection structure of corrugated pipe for underground distribution
KR20110000252U (en) Underground pipeline joint of electric power

Legal Events

Date Code Title Description
A201 Request for examination
E601 Decision to refuse application