KR200484341Y1 - Explosion proof type cable grand structure - Google Patents

Explosion proof type cable grand structure Download PDF

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Publication number
KR200484341Y1
KR200484341Y1 KR2020150008491U KR20150008491U KR200484341Y1 KR 200484341 Y1 KR200484341 Y1 KR 200484341Y1 KR 2020150008491 U KR2020150008491 U KR 2020150008491U KR 20150008491 U KR20150008491 U KR 20150008491U KR 200484341 Y1 KR200484341 Y1 KR 200484341Y1
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KR
South Korea
Prior art keywords
packing
explosion
cable
coupled
gland
Prior art date
Application number
KR2020150008491U
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Korean (ko)
Other versions
KR20170002395U (en
Inventor
김경호
장병두
이기정
차영훈
Original Assignee
주식회사 한국가스기술공사
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Publication date
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Priority to KR2020150008491U priority Critical patent/KR200484341Y1/en
Publication of KR20170002395U publication Critical patent/KR20170002395U/en
Application granted granted Critical
Publication of KR200484341Y1 publication Critical patent/KR200484341Y1/en

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    • 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
    • H02G15/013—Sealing means for cable inlets
    • 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
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/04—Sealing to form a firebreak device
    • 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
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/10—Sealing by using sealing rings or sleeves only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet

Abstract

The present invention relates to an explosion-proof cable gland structure for preventing gas leakage, and in particular, a three-layer hermetically sealed structure can prevent the leakage of gas through a power supply and a signal cable of the apparatus and protect the apparatus from accidents such as explosion and fire. To an explosion-proof cable gland structure for preventing gas leakage.

Description

[0001] EXPLOSION PROOF TYPE CABLE GRAND STRUCTURE [0002]

The present invention relates to an explosion-proof cable gland structure for preventing gas leakage, and in particular, a three-layer hermetic structure can prevent the leakage of gas through a power supply and a signal cable of the apparatus, and protect the apparatus from an accident such as explosion or fire. To an explosion-proof cable gland structure for preventing gas leakage.

1, a conventional explosion-proof cable gland includes a waterproof body 101 having a funnel-shaped waterproof seal 101 adhered to a cable C on one side thereof and a tapered contact portion 102 formed on the other side thereof A first assembly 105 having an assembling ring 103 having an inclined surface in close contact with the tapered contact portion 102 and having a funnel-shaped waterproof seal 101 inserted therein and an assembly screw portion 104 formed therein; And a second assembly 106 in which the tapered contact portion 102 and the assembly ring 103 are inserted inward and a female screw portion is assembled with the assembly screw portion 104 of the first assembly 105, When the cable C is in close contact with the funnel-shaped waterproof seal 101 of the waterproof body 100 or when a large pressure is applied through the assembly hole 105a of the first assembly 105, the funnel- There is a problem that the sealing member 101 is deformed and leaks, When high, the funnel-like waterproof seal 101 is prepared to be bonded with an adhesive onto the waterproof body 100, a funnel-like waterproof seal 101 is damaged, there is a problem that must be exchanged water resistant body 100.

In the conventional 'Korean Patent No. 10-0929931', a method of manufacturing a cable gland for an explosion-proof electric wire bundle is proposed in which a heavy metal such as a conventional cast iron is replaced with aluminum and an anodizing treatment is performed on the surface thereof. Such a patent has a problem in that it does not have a great effect in carrying out the waterproof function.

Korean Patent Registration No. 10-0929931 entitled " Method for manufacturing a cable gland for an explosion-proof electric wire bundle "(registered on November 26, 2009)

The present invention has been devised to solve the above problems, and it is possible to prevent leakage of gas through a power supply and a signal cable of a device by using a three-layer hermetic structure, and to protect the equipment from an accident such as an explosion or a fire And an object of the present invention is to provide an explosion-proof cable gland structure for preventing gas leakage whose structure is improved.

The present invention for achieving the above object is an explosion-proof cable gland structure for gas leakage shielding,

A top flange connected to the device and formed with a through hole through which a plurality of cables pass,

A hollow reducer, one end of which is coupled to the through-hole and through which the cable passes,

A first packing coupled to the reducer and having a plurality of through holes through which respective cables passing through the reducer are individually passed,

A hollow body having a first coupling portion formed on one side thereof and a second coupling portion formed on the other side thereof,

A hollow second packing coupled to the body,

A ground screw coupled to the body to urge the second packing against the cable,

A third hollow packing threaded on the top surface of the gland,

And a cover coupled to the second coupling portion of the body to receive the third packing therein so that the third packing closely contacts the cable main surface.

Also, the present invention is characterized in that a pair of O-rings are coupled to the top flange, which is connected to the device, concentrically spaced apart from each other by a predetermined distance.

A first washer is interposed between the lower end of the first engaging portion and the first packing, and a second washer is interposed between the lower end of the gland and the second packing.

This design has a triple hermetic structure and has an improved structure to prevent leakage of gas through the power supply and signal cable of the equipment and to protect the equipment from accidents such as explosion and fire.

1 is a cross-sectional view showing a conventional explosion-proof cable gland,
Fig. 2 is an exploded perspective view showing the present invention explosion-proof cable gland structure,
3 is a cross-sectional view of Fig.

The explosion-proof cable gland structure for gas leakage prevention of the present embodiment of the present invention has a three-layer hermetic structure to prevent leakage of gas through the power supply and signal cable of the device, and to improve the facility to protect it from accidents such as explosion and fire Structure.

2 and 3 showing an explosion-proof cable gland structure for gas leakage protection according to the present embodiment, a top flange 1 connected to an apparatus and formed with a through hole 1a through which a plurality of cables are passed, , A hollow reducer (2) whose one end is coupled to the through hole (1a) and through which the cable passes, a plurality of cables (2) coupled to the reducer (2) And a second coupling portion 5b formed on one side of the first packing 3 and a second coupling portion 5b formed on the other side of the hollow body 5. The first coupling 3 has a through hole 3a formed therein, A hollow second packing 6 coupled to the body 5 and a second packing 6 screwed to the body 5 to press the second packing 6 against the cable 100 A hollow third packing (9) threadedly engaged with the upper surface of the gland (8), and a third packing (9) And a cover 10 coupled to the second engaging portion 5b of the body 5 to receive the third packing 9 so as to be brought into close contact with the outer circumferential surface of the cable 100. [

In addition, a pair of O-rings 1b are coupled to the top flange 1 connected to the device device, concentrically spaced apart from each other.

A first washer 4 is disposed between the lower end of the first engaging portion 5a and the first packing 3 and a second washer 4 is interposed between the lower end of the gland 8 and the second packing 6. [ 2 washers 7 are interposed.

The explosion-proof cable structure having the above-described structure is filled with an epoxy solution for sealing to prevent leakage between the top flange 1 and the reducer 2 to withstand water and weather changes, and a primary sealing function Thereby improving the function of the gas leakage shielding cable gland.

A first packing 3 made of a Teflon material having an inclined surface having one hole 3a for each multi cable strand is inserted into the through hole 3a for each strand, Take out the cable.

When the first packing 3 of the inclined surface is contracted when the body 5 having the support surface is formed, the cables are individually crimped and sealed so that the cable The gasket is prevented from leaking by pressing the space between the outer shell and the outer shell.

The second packing 6 is a structure for secondarily blocking the gas leakage that may occur in the primary first packing 3 and is provided with the gland to compress the cable sheath. It is a soft elastic rubber material that can be accommodated during contraction and expansion.

The gland (8) is tightened clockwise to distribute uniform force through the second washer (7), thereby blocking gas leakage with complete contact of the second packing (6).

Then, when the grand cover 10 is tightened, it is fastened to the thread of the body 5 through the third packing 9 so that the body 5 and the grand cover 10 are integrated.

The explosion-proof cable gland structure as described above has a three-layer hermetic structure and has an improved structure to prevent leakage of gas through a power source and a signal cable of the device and to protect the equipment from an accident such as an explosion or a fire.

1 ... Top flange 2 ... Lederer
3 ... first packing 5 ... body
6 ... 2nd packing 8 ... Grand
9 ... Third packing 10 ... Grand cover

Claims (3)

An explosion-proof cable gland structure for gas leakage shielding,
A top flange (1) connected to the device and formed with a through hole (1a) through which a plurality of cables pass,
A hollow reducer (2), one end of which is coupled to the through hole (1a) and through which the cable passes,
A first packing 3 coupled to the reducer 2 and having a plurality of through holes 3a through which respective cables passing through the reducer 2 are passed,
A hollow body 5 having a first engaging portion 5a screwed to the reducer 2 on one side and a second engaging portion 5b on the other side,
A hollow second packing 6 coupled to the body 5,
A ground (8) screwed on the body (5) and pressing the second packing (6) to come into close contact with the cable (100)
A hollow third packing 9 screwed onto the upper surface of the gland 8,
A cover 10 which is coupled to the second engaging portion 5b of the body 5 to receive the third packing 9 so that the third packing 9 is brought into close contact with the outer circumferential surface of the cable 100, Wherein the gas leakage preventing gland structure comprises:
The explosion-proof cable gland structure according to claim 1, wherein a pair of O-rings (1b) are concentrically and concentrically spaced from the top flange (1) connected to the device.
The method according to claim 1 or 2, wherein a first washer (4) is interposed between the lower end of the first engaging portion (5a) and the first packing (3), and the lower end of the gland (8) And the second washer (7) is interposed between the first gasket (6) and the second gasket (6).
KR2020150008491U 2015-12-24 2015-12-24 Explosion proof type cable grand structure KR200484341Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020150008491U KR200484341Y1 (en) 2015-12-24 2015-12-24 Explosion proof type cable grand structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020150008491U KR200484341Y1 (en) 2015-12-24 2015-12-24 Explosion proof type cable grand structure

Publications (2)

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KR20170002395U KR20170002395U (en) 2017-07-04
KR200484341Y1 true KR200484341Y1 (en) 2017-08-25

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109273155A (en) * 2018-09-25 2019-01-25 安徽徽宁电器仪表集团有限公司 A kind of anti-explosion cable of oil exploitation
CN110176744B (en) * 2019-06-14 2020-07-10 广东安诺新材料科技有限公司 High-voltage cable joint metal explosion-proof device and end head part parameter determination method and system
CN111900555A (en) * 2020-07-31 2020-11-06 吕国群 Connector for laying high-altitude cables

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100806705B1 (en) * 2006-11-23 2008-03-03 삼화기전 주식회사 Explosion-proof type cable gland

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5644203Y2 (en) * 1977-05-25 1981-10-16
KR100929931B1 (en) 2009-05-19 2009-12-04 통일방폭전기 주식회사 Method for manufacturing cable gland used in flameproof electric wire piping

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100806705B1 (en) * 2006-11-23 2008-03-03 삼화기전 주식회사 Explosion-proof type cable gland

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