KR101607164B1 - Breakage Detection Device for Underground Power Distribution Pipe - Google Patents

Breakage Detection Device for Underground Power Distribution Pipe Download PDF

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Publication number
KR101607164B1
KR101607164B1 KR1020160010419A KR20160010419A KR101607164B1 KR 101607164 B1 KR101607164 B1 KR 101607164B1 KR 1020160010419 A KR1020160010419 A KR 1020160010419A KR 20160010419 A KR20160010419 A KR 20160010419A KR 101607164 B1 KR101607164 B1 KR 101607164B1
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KR
South Korea
Prior art keywords
contact
contact plates
pair
hole
plates
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KR1020160010419A
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Korean (ko)
Inventor
한성우
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주식회사 승원이엔지
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Priority to KR1020160010419A priority Critical patent/KR101607164B1/en
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Publication of KR101607164B1 publication Critical patent/KR101607164B1/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
    • 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
    • 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
    • F16L1/06—Accessories therefor, e.g. anchors
    • F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

The present invention relates to a breakage detection device for an underground power distribution pipe, designed to notify a burst in an underground pipe, caused by subsidence of ground, a sink hole, an earthquake, or the like. The breakage detection device includes: a pair of hanging ribs (26, 28); a pair of contact plates (30, 40) located inside a groove (24) between the hanging ribs (26, 28); bending grooves (31, 41) formed on surfaces of the contact plates (30, 40) at certain intervals; entrance passages (26c, 28c) for inserting the contact plate (30) into the groove (24); bending portions (32a, 32b, 42a, 42b); a burring nut (34) formed on the contact plate (30); a through hole (44); an insulation bushing (50) inserted into the through hole (44) to insulate the inside of the hole; a bolt (60); a pre-load spring (70); a spring sheet (72); a contact detection unit (80) detecting contact between the contact plates (30, 40); signal lines (82, 84); a waterproof tube (90); and an alert circuit unit (86) notifying the burst of a ground pipe (20) based on a signal detected in the contact detection unit (80).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a breakage detection apparatus for an underground pipe,

The present invention relates to a breakage detection apparatus for a submerged pipe for distribution, and more particularly, to a breakage detection apparatus for a submerged underground pipe which notifies a breakdown of an underground pipe by ground subsidence, a sinkhole, an earthquake or the like.

Generally, a manhole is installed after excavating a place to install an underground railway, and a manhole is connected between manholes by an underground pipe. Then, an underground pipe is covered with earth and a power line is installed inside the underground pipe.

1, the underground pipe 10 installed on the ground layer 12 is lower than the underground pipe 10, as shown in FIG. 1, when a ground subsidence occurs or a sink hole or an earthquake occurs. So that the damaged portion 14 is generated.

At this time, the groundwater or the soil is introduced into the underground pipe 10 through the damaged portion 14, and the power line installed inside the underground pipe 10 is contaminated. The underground pipe 10 flows into the manhole, There was a problem causing an accident.

Korean Patent Registration No. 10-0887987 Korean Registered Patent No. 10-1499173 Korean Patent Publication No. 10-2015-0119725 number

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a breakage detection device for a submersible pipe for distribution which can detect breakage of an underground pipe.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a breakage detecting apparatus for a submerged pipe, comprising: a pair of latching ribs formed along both side walls of a corrugated tube of an underground tube, ; A pair of contact plates bent in the circumferential direction of the underground tube and positioned in the grooves between the engaging ribs with a clearance therebetween; A bending groove formed on the surface of the contact plate at regular intervals; An entrance passage formed by cutting a part of the engagement rib to insert a contact plate positioned on an upper side of the pair of contact plates into the groove; A bending portion bent in opposite directions to each other at both edges of the pair of contact plates and engaged with the latching ribs; A burring nut formed on a contact plate located on an upper side of the pair of contact plates; A through hole formed in a contact plate positioned below a pair of the contact plates; An insulating bushing inserted into the through hole to insulate the inside of the hole and having an insulating flange at a lower end; A bolt coupled to the burring nut through the insulating bushing and having a bolt head; A preload spring installed between the bolt head and the insulating flange and applying an elastic force in a direction in which the contact plates contact each other; A spring seat installed between the preload spring and the head of the bolt to support the preload spring; A contact detection unit for detecting contact of the contact plate; A signal line connecting between the contact plate and the contact detection unit; A waterproof tube surrounding the outside of the underground pipe; And an alarm circuit unit for informing that the underground pipe is blown on the basis of the signal detected by the contact detecting unit.

As described above, according to the present invention, since the breakdown of the underground pipe 20 can be detected and detected by using the pair of contact plates 30 and 40, the broken underground pipe 20 can be quickly repaired There is an effect that can help.

Since the two contact plates 30 and 40 are constantly urged in the direction of close contact by the preload spring 70, the contact plates 30 and 40 are quickly contacted during breakage of the underground tube 20, There is an effect that it can be outputted immediately.

The contact plates 30 and 40 positioned outside the underground pipe 20 by the waterproof tube 90 surrounding the underground pipe 20, the insulating bushing 50, the preload spring 70, the spring seat 72, The bolts 60, and the signal lines 82 and 84 can be prevented from being contaminated or malfunctioned by the ground water or the gravel.

Since the bending grooves 31 and 41 formed on the surfaces of the contact plates 30 and 40 can easily bend in accordance with the diameter of the underground pipe 20, There is an effect that the contact plates 30 and 40 can be bent and used in accordance with the underground pipe 20 having a different diameter.

The inside of the hole of the through hole 44 through which the bolt 60 passes is insulated by the insulating bushing 50 and one end of the preload spring 70 is connected to the insulating flange 52 formed in the insulating bushing 50 It is possible to prevent a malfunction due to the bolt 60 and the preload spring 70. [0051] As shown in Fig.

Furthermore, since the contact detection unit 80 and the alarm circuit unit 86 inform the ground personnel of breakage of the underground pipe 20, the present invention can provide an effect of promptly coping with breakage of the underground pipe 20 have.

FIG. 1 is a cross-sectional view showing that a general underground pipe is broken by a ground load
Fig. 2 is an exploded perspective view
Fig. 3 is an exploded perspective view of the bottom side of Fig.
4 is a cross-sectional view
Fig. 5 is a perspective view of an installation state bottom view
6 is a cross-sectional view showing the interior of the waterproof tube according to the present invention,
Figure 7 is a cross-
8 is an enlarged cross-sectional view of part B of Fig. 7
9 is a cross-sectional view showing a state in which the contact plate is in contact with the preload spring while the underground tube is broken from the state of FIG. 8
Fig. 10 is an enlarged cross-sectional perspective view
11 is a sectional view taken along the line A-A 'in Fig. 6

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 2 to 11, the present invention is characterized in that it is formed along both sidewalls of corrugated projections 22 of an underground pipe 20 and is spaced apart from each other in grooves 24 between the corrugated projections 22 And a pair of latching ribs (26) and (28) protruding from each other.

The latching ribs 26 and 28 can be formed in a triangular cross-section in which, for example, the tips of the cocks are circularly rounded.

A pair of contact plates (30) (40) bent in the circumferential direction of the underground pipe (20) and positioned in the grooves (24) between the engagement ribs (26) and (28) with a clearance therebetween; And bending grooves 31 and 41 formed on the surfaces of the contact plates 30 and 40 at regular intervals.

The contact plates 30 and 40 can be formed of a metal that can be electrically energized, and corrosion-resistant plating such as zinc plating can be formed on the surface to improve corrosion resistance.

A plurality of the bending grooves 31 and 41 may be formed in a straight line in a direction perpendicular to the direction in which the contact plates 30 and 40 are bent in a plan view, .

The bending grooves 31 and 41 can be formed on the surface opposite to the direction in which the two contact plates 30 and 40 face each other.

The present invention is characterized in that a part of the engagement ribs 26 and 28 is cut to insert the contact plate 30 positioned on the upper side of the pair of contact plates 30 and 40 into the groove 24 The entry passages 26c and 28c; And bending portions 32a, 32b, 42a, and 42b that are bent at opposite edges of the pair of contact plates 30 and 40 and are engaged with the latching ribs 26 and 28, .

The entry passages 26c and 28c are formed to be larger than the contact plates 30 and 40 so that the contact plates 30 and 40 can smoothly enter.

The bent portions 32a, 32b, 42a, and 42b may be formed to be symmetrical as shown in FIG. 8, for example. The folded portions 32a, The bent portions 42a and 42b formed on the lower contact plate 40 are formed to be inclined downward and the upper and lower bent portions 32a and 32b, Quot; V "type to each other.

A burring nut (34) formed on a contact plate (30) positioned on an upper side of a pair of contact plates (30, 40); A through hole 44 formed in a contact plate 40 positioned below a pair of the contact plates 30 and 40; An insulating bushing 50 inserted into the through hole 44 to insulate the inside of the hole and having an insulating flange 52 at a lower end thereof; And a bolt 60 coupled to the burring nut 34 through the insulating bushing 50 and having a bolt head 62.

The insulating bushing 50 may be formed of synthetic resin or the like for electrical insulation, and the insulating bushing 50 and the insulating flange 52 are integrally formed.

A preload spring (70) installed between the bolt head (62) and the insulating flange (52) and applying an elastic force in a direction in which the contact plates (30) and (40) contact each other; And a spring seat 72 installed between the preload spring 70 and the bolt head 62 to support the preload spring 70.

The preload spring 70 may be constituted by a compression coil spring formed by spirally winding a steel wire and one end of the preload spring 70 is supported by an insulating flange 52 so that the preload spring 70 ).

The spring seat 72 is provided to prevent the preload spring 70 from being detached from the bolt head 62. For example, the spring seat 72 may be formed in a dish shape having a vertical wall upward along the edge.

The present invention includes a contact detection unit (80) for detecting contact of the contact plates (30) (40); Signal lines 82 and 84 for connecting the contact plates 30 and 40 and the contact detection unit 80; A waterproof tube (90) surrounding the outside of the underground pipe (20); And an alarm circuit unit 86 for informing of the disconnection of the underground pipe 20 based on the signal detected by the contact detecting unit 80.

The contact detection unit 80 may be a conventional circuit such as a mechanical relay, a transistor circuit which receives a signal from the voltage-dividing resistor and is turned on, and a semiconductor relay.

The signal lines 82 and 84 may be formed by peeling the insulation coating at the ends of the signal lines 82 and 84 and then electrically connecting the core portions of the signal lines 82 and 84 And can be joined to the contact plates 30 and 40 by the possible joining portions 82p and 84p, respectively.

The signal lines 82 and 84 can be bonded to the contact plates 30 and 40 by a bonding means such as soldering, ultrasonic welding, laser welding, or pressing.

5 to 7, a plurality of contact plates 30 and 40 may be provided in the grooves 24 of the underground pipe 20, and the plurality of contact plates 30 and 40 may be connected to the signal lines 82 may be connected in parallel by using the contact plates 30, 40 and 82 so that breakage can be detected even if at least one of the contact plates 30, 40 is contacted. As another example, It is possible to connect the breaker of the underground tube 20 to the independent signal lines 82 and 84 so that the breakage of the underground tube 20 can be grasped by the contact of the contact plates 30 and 40.

Hereinafter, the operation according to the present invention will be described in detail with reference to the accompanying drawings.

The process of assembling the contact plates 30 and 40 is such that when the contact plates 30 and 40 that are in a flat plate shape are bent in a shape substantially coinciding with the circumference of the underground pipe 20, The contact plates 30 and 40 are bent easily by the bending grooves 31 and 41 formed on the surfaces of the contact plates 30 and 40, respectively.

When the insulating bushing 50 is inserted into the through hole 44 formed in the lower contact plate 40, the inside of the through hole 44 is electrically insulated by the insulating bushing 50.

The spring seat 72 and the preload spring 70 are successively inserted into the bolts 60 and then the bolts 60 are coupled to the burring nuts 34 through the insulating bushing 50. The two contact plates 30 ) 40 are joined by the bolts 60.

At this time, the both ends of the preload spring 70 are brought into contact with the insulation flange 52 formed on the insulating bushing 50 and the spring seat 72, respectively, so that power supply through the preload spring 70 is prevented.

The bending portions 32a and 32b formed on the contact plate 30 located on the upper side of the two contact plates 30 and 40 are positioned upward and the bending portions 32a and 32b formed on the contact plate 40 located on the lower side, 42a and 42b are downwardly positioned so that the bent portions 32a, 32b, 42a, and 42b are assembled with caution in such a manner as to form a "V" shape.

The process of installing the contact plates 30 and 40 assembled in the above manner on the underground pipe 20 is performed in a state in which the contact plates 30 and 40 are separated from each other by forcibly separating the contact plates 30 and 40, The contact plates 30 located on the upper side of the contact plates 30 and 40 are inserted into the grooves 24 through the entry passages 26c and 28c formed in the engagement ribs 26 and 28, The bending portions 32a, 32b, 42a, and 42b are engaged with the engaging ribs 26 and 28, respectively, as shown in FIG. 8, (28).

At this time, when the external force is removed from the contact plates 30 and 40 which have been forcibly opened, the bending portions 32a, 32b, 42a and 42b are engaged by the resilient restoring force of the pre- And the two contact plates 30 and 40 are spaced apart from each other and remain insulated.

The signal lines 82 and 84 are respectively connected to the two contact plates 30 and 40 and then the waterproof tube 90 and the underground pipe 20 The signal lines 82 and 84, the bolt 60, the preload spring 70, the insulating bushing 50, and the spring seat 72 are placed between the contact plates 30 and 40, respectively.

A short circuit of the contact plates 30 and 40 is detected by the contact detecting portion 80 and the signal is detected by the alarm circuit portion 86 through the contact detecting portions 80 and 84, You will know.

On the other hand, as shown in FIG. 9, when the grooved pipe 20 sags down due to subsidence, a sinkhole, an earthquake, or the like, the grooves 24 are widened when the grooves 24 are cracked. The engaging ribs 26 and 28 are disengaged from the engaging portions 32a, 32b, 42a and 42b.

When the engagement ribs 26 and 28 are disengaged from the bent portions 32a and 32b and 42a and 42b as described above, the two contact plates 30 and 40 are urged by the elastic force of the pre- The signal lines 82 and 84 are short-circuited by the contact plates 30 and 40 and the short circuit state is detected by the contact detecting unit 80, (20) to the personnel on the ground.

20: underground tube 22: corrugated projection
24: groove 26, 28:
26c, 28c: entry path 30, 40: contact plate
31, 41: bending grooves 32a, 32b, 42a, 42b:
34: burring nut 44: through hole
50: Insulation bushing 52: Insulation flange
60: bolt 62: bolt head
70: preload spring 72: spring seat
80: contact detection unit 82, 84:
82p, 84p: connection part 86: alarm circuit part
90: Waterproof tube

Claims (1)

A pair of engaging ribs 26 and 28 formed along both side walls of the corrugated tube 22 of the underground tube 20 and protruding from the grooves 24 between the corrugated projections 22 with a predetermined gap therebetween, ;
A pair of contact plates (30) (40) bent in the circumferential direction of the underground pipe (20) and positioned in the grooves (24) between the engagement ribs (26) and (28) with a clearance therebetween;
Bending grooves 31 and 41 formed at regular intervals on the surfaces of the contact plates 30 and 40;
And is formed by cutting a part of the engagement ribs (26) and (28) to insert the contact plate (30) positioned on the upper side of the pair of contact plates (30) (26c) (28c);
Bent portions 32a, 32b, 42a, and 42b that are bent at opposite edges of the pair of contact plates 30 and 40 to be engaged with the latching ribs 26 and 28, respectively;
A burring nut 34 formed on a contact plate 30 located on the upper side of the pair of contact plates 30 and 40;
A through hole 44 formed in a contact plate 40 positioned below a pair of the contact plates 30 and 40;
An insulating bushing 50 inserted into the through hole 44 to insulate the inside of the hole and having an insulating flange 52 at a lower end thereof;
A bolt (60) coupled to the burring nut (34) through the insulating bushing (50) and having a bolt head (62);
A preload spring 70 installed between the bolt head 62 and the insulating flange 52 to apply an elastic force in a direction in which the contact plates 30 and 40 contact each other;
A spring seat 72 installed between the preload spring 70 and the bolt head 62 to support the preload spring 70;
A contact detection unit (80) for detecting contact of the contact plates (30) (40);
Signal lines 82 and 84 for connecting the contact plates 30 and 40 and the contact detection unit 80;
A waterproof tube (90) surrounding the outside of the underground pipe (20);
An alarm circuit unit 86 for informing the burst of the underground pipe 20 based on the signal detected by the contact detecting unit 80;
And a damper for detecting the breakage of the ship.
KR1020160010419A 2016-01-28 2016-01-28 Breakage Detection Device for Underground Power Distribution Pipe KR101607164B1 (en)

Priority Applications (1)

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KR1020160010419A KR101607164B1 (en) 2016-01-28 2016-01-28 Breakage Detection Device for Underground Power Distribution Pipe

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Application Number Priority Date Filing Date Title
KR1020160010419A KR101607164B1 (en) 2016-01-28 2016-01-28 Breakage Detection Device for Underground Power Distribution Pipe

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001221393A (en) 2000-02-09 2001-08-17 Tokyo Gas Co Ltd Damage predicting method for underground buried pipe and damage predicting sensor for underground buried pipe
KR100887987B1 (en) 2008-10-29 2009-03-10 (주)대진방재 Under ground laied pipe
KR100983015B1 (en) 2010-04-14 2010-09-17 (주)부호엔지니어링 Damaged perceiving equipment underground

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001221393A (en) 2000-02-09 2001-08-17 Tokyo Gas Co Ltd Damage predicting method for underground buried pipe and damage predicting sensor for underground buried pipe
KR100887987B1 (en) 2008-10-29 2009-03-10 (주)대진방재 Under ground laied pipe
KR100983015B1 (en) 2010-04-14 2010-09-17 (주)부호엔지니어링 Damaged perceiving equipment underground

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