WO2018235980A1

WO2018235980A1 - Detection hole for checking whether gas is leaking from underground pipe, and method for installing same

Info

Publication number: WO2018235980A1
Application number: PCT/KR2017/007144
Authority: WO
Inventors: 우성진; 우종범
Original assignee: 주식회사 협성이엔지
Priority date: 2017-06-22
Filing date: 2017-07-05
Publication date: 2018-12-27
Also published as: KR20190000232A

Abstract

The present invention relates to a detection hole for checking whether gas is leaking from an underground pipe, and a method for installing the same and, more specifically, to a detection hole for checking whether gas is leaking from an underground pipe, and a method for installing the same, wherein: whether gas is leaking from an underground gas pipe can be simply and easily detected on the ground; in contrast to conventional detection holes which are installed together with gas pipes in the process of installing the gas pipes underground, the detection hole can be installed after completion of road surface work (soil and ground hardening) subsequent to gas pipe installation, so as to minimize damage to or destruction of the road surface around a place where the detection hole is installed; and the upper portion of the detection hole can also function as a line mark (maker stake) by which the installation location, direction, branch-off, or type of gas pipe can be identified.

Description

Detecting ball for checking whether gas leakage in underground pipe is buried and buried method

The present invention relates to a detection hole for checking the presence or absence of a gas leak in an underground buried pipe and more particularly to a method for detecting a gas leakage from a gas pipe buried in an underground, Unlike the conventional sensor bar which was installed in the process of laying the pipe, it is possible to install the sensor bar after completing the construction of the gas pipe according to the burial of the gas pipe, thereby minimizing damage and breakage of the surrounding road surface provided with the sensor bar, The present invention relates to a detection hole for checking the presence or absence of gas leakage in an underground buried pipe which can also function as a line mark (indication nail) function for confirming the buried position, direction, branch or kind of gas piping.

Generally, a city gas supplied to each customer is formed in a form buried in an underground, and such a channel has a structure in which a plurality of gas pipes are mutually connected.

In addition, the above-mentioned pipeline receives natural gas from KOGAS, or mixes LPG with air, and is supplied to a general customer through a global regulator and a local regulator, and the gas is supplied to the local regulator at medium and high pressures , The gas is supplied at a relatively low pressure on the piping installed to be supplied to the respective consumers from the local regulator.

Most of the above-mentioned pipelines are buried in the underground, forming a supply line. The pipelines connected to the car such as a car where a car is communicating or a car passing by people are buried under a certain depth of ground.

These pipes are used for a long period of time or because of changes in the surrounding environment and construction and maintenance of surrounding structures (for example, new roads, maintenance, upgrading, sewerage, maintenance, This effect can affect the piping immediately and may cause gas leakage. However, it is possible to prevent the gas from leaking out over a long period of time, The gas may be leaked while it is getting larger.

In order to detect whether or not gas is leaked from the pipeline, a detection hole is usually installed when gas piping is embedded.

Generally, as described above, the detection hole is to detect whether or not gas is leaked from a gas pipe buried in the underground. In the case of the detection hole of Korea Gas Safety Corporation, a hole is formed in the upper part of the protection steel plate, Which means that it can be detected on the ground. This is to make it possible to check the gas leakage of the installed piping, and it is applied when the piping above the medium pressure is installed under the road. The material should be KS D3507 (carbon steel pipe for piping) or equivalent steel pipe coated with polyethylene, and the diameter of the detection hole shall be 32mm or more. In addition, put the cap on the top so that foreign matter does not enter, and the top of the index finger and the bottom of the index finger cap are spaced more than 8cm. The installation location of the detector box should be as close as possible to the vehicle traffic and shall be installed in a place where it can be easily inspected in the future. The detection holes are welded by drilling the center of the protection plate, and the parts damaged by the heat are coated with a primer so that the coating damage of the protection plate due to welding heat is minimized.

As shown in FIG. 1, the detection hole is generally installed in the process of burying the gas pipe. As shown in FIG. 1, the gas pipe is installed in the underground pipe and the pipe After the detector was installed in the vertical direction, the ground was covered and a TB (Test Box) was installed on the asphalt surface (surface layer) at the uppermost portion to protect the detector.

However, since the above-described conventional detection hole is difficult to sufficiently compaction around the TB when the asphalt is marked, the durability of the road surface is lowered, and cracks, sinks, There is a risk of traffic accidents due to poor road surface conditions. In addition, since the maintenance and repair work for such poor road surfaces frequently occurs, a lot of manpower and budget are wasted. There was a problem that could cause injury to persons.

Since the gas piping buried in the underground can not be confirmed on the ground, a line mark (display peg) capable of confirming the buried position, direction, branch or kind of the gas piping is provided on the ground to display it. It is necessary to separately work the indicator peg since the detector peg can be used only for the inspection apparatus which can confirm whether or not the gas leakage is occurring.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for detecting gas leakage from a gas pipeline buried underground, Unlike the existing sensor bar, it is possible to install the sensor bar after completing the construction of the gas piping according to the burial of the gas pipe, so as to minimize the damage and damage of the surrounding road surface where the sensor bar is installed. And a method of embedding the same.

In addition, after the gas piping is buried, it is possible to improve the workability and quality of the pipeline construction by making the condition that the roadside (compaction) construction can be carried out according to the specification. And to provide a method of inserting an underground buried pipe for inspecting whether or not a gas leak is caused in the underground buried pipe and a buried method thereof.

In addition, a detection hole for confirming the presence or absence of a gas leak in an underground pipeline that can function as a line mark (display nail) function for confirming the position, direction, branch, or type of gas piping buried in the upper portion of the display portion of the detection hole. So as to provide a burial method.

In addition, it is possible to install it at the minimum cost on the ground where the detection hole is not installed, and it is possible to easily install it with various intervals (50 to 500 m) according to the site conditions, The present invention is directed to a method of detecting a gas leak in an underground buried pipe for providing a buried inspecting gas and a buried method therefor.

In order to solve the above-described problems, the detection hole for checking the presence or absence of gas leakage in the underground piping according to the present invention is formed in the shape of a tube provided with a hollow 110 for allowing leaked gas to pass therethrough, (100) having a predetermined length formed by the first fastening part (130) at the upper end and embedded in the ground; One or more flow preventing grooves 220 are formed on the outer circumferential surface and a second engaging portion 230 is formed on the upper end of the first engaging portion 210 so as to be coupled with the first fastening portion of the detecting portion. A reinforcing portion 200 for reinforcing the reinforcing member 200; A second coupling part 310 corresponding to the second coupling part of the reinforcing part is provided to be coupled to the upper part of the reinforcing part and a through hole 320 communicating with the hollow of the detection part is provided on the upper part of the second coupling part, A cover 330 having a plate shape is formed, and the cover includes a display unit 300 having a third coupling part 340 formed on an inner circumferential surface of the through hole; And a locking part (400) coupled to an upper portion of the through hole to close the through hole of the display part and having a third coupling part (410) on the outer circumferential surface to be coupled to the third coupling part do.

The sensing unit 100 may further include a stainless steel auxiliary pipe 140 inside the hollow 110 to reinforce corrosion resistance.

The reinforcing part 200 is characterized in that the tapered part 201 is formed on the outer circumferential surface so that the diameter d2 of the lower end part may be smaller than the diameter d1 of the upper end part.

In addition, the display unit 300 is characterized in that the identification information is displayed on the upper surface of the display unit exposed on the ground so that the identification information 350 about the gas piping embedded in the underground can be easily viewed from the outside.

In the meantime, a method for burying a detection hole for confirming whether or not a gas leakage occurs in an underground pipe according to the present invention is a method for burying a detection hole (10) for confirming whether or not a gas leakage occurs in an underground pipe, (S100) marking the gas piping embedded in the basement by a predetermined interval; A step S200 of drilling a portion marked on the paper by a predetermined depth using a drill equipped with a core drill 700 to prepare a buried hole; A step (S300) of inserting a detection hole (10) including a detecting unit (100), a reinforcing unit (200), a display unit (300) and a locking unit inside the buried hole; And a control unit.

Here, the core drill 700 includes a small bit 710 for drilling a bore corresponding to the diameter and length of the detection unit 100; A middle bit 720 in the form of a core bit for forming a bore corresponding to a diameter and a length of the reinforcing part 200 formed on the small bit; And a large bit (730) in the form of a core bit for forming a hole corresponding to a diameter and a height of the display unit (300), the large bit being formed on the middle bit; Are integrally formed.

As described above, according to the present invention, it is possible to easily detect whether gas is leaked from a gas pipeline buried in the ground or not, (Compaction) It is possible to install the detection hole after completion of the construction, thereby minimizing the damage and breakage of the peripheral road surface provided with the detection hole.

In addition, after the gas piping is buried, it is possible to improve the workability and quality of the pipeline construction by making the condition that the roadside (compaction) construction can be carried out according to the specification. .

In addition, there is an advantage that a line mark (display nail) function capable of confirming the position, direction, branch, or type of gas piping buried in the upper portion of the display portion of the detection hole can be used.

In addition, it is possible to install the sensor at a minimum cost on the ground where the detection hole is not installed, and it is possible to easily install the sensor at various intervals (100 to 500 m) . &Lt; / RTI >

1 to 3 are views showing an example of a conventional detection hole,

4 is a view showing a decomposition state of a detection hole for confirming whether or not a gas leakage occurs in an underground pipeline according to the present invention,

FIG. 5 is a view showing the state of the detection hole for checking whether or not gas leakage occurs in the underground piping according to the present invention,

6 is a cross-sectional view of a detection hole for confirming whether or not gas leakage occurs in underground piping according to the present invention,

7 is a view showing a decomposition state of the detection unit according to the present invention,

8A shows a preferred embodiment of the reinforcement according to the present invention,

8B is a cross-sectional view along the line A-A 'in FIG. 8A,

9 is a view showing a preferred embodiment of the display unit according to the present invention,

10 is a view showing another embodiment of the display unit according to the present invention,

11 is a view showing a buffer according to the present invention,

12 is a view showing a decomposition state of the buffer part according to the present invention,

13 is a flowchart showing a method of embedding a detection hole for confirming whether or not a gas leakage occurs in an underground pipeline according to the present invention,

FIG. 14 is a sectional view schematically showing a state in which a detection hole is installed by a method of detecting the presence of gas leakage in an underground buried pipe according to the present invention,

15 is a schematic view of a core drill according to the present invention.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The same reference numerals shown in the drawings denote the same members. In describing the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

FIG. 4 is a view showing a decomposition state of a detection hole for checking whether a gas leakage occurs in an underground pipeline according to the present invention, and FIG. 5 is a view showing a combination state of a detection hole for checking whether a gas leakage occurs in an underground pipeline according to the present invention 6 is a cross-sectional view of a detection hole for confirming the presence or absence of gas leakage in an underground piping according to the present invention, FIG. 7 is a view showing a decomposition state of a detection unit according to the present invention, FIG. 8A is a sectional view taken along line A-A 'of FIG. 8A, FIG. 9 is a view showing a preferred embodiment of the display unit according to the present invention, and FIG. 10 is a view showing another embodiment of the display unit according to the present invention. Fig. 11 is a view showing a cushioning portion according to the present invention, Fig. 12 is a view showing a disassembled state of a cushioning portion according to the present invention, and Fig. 13 is a cross- Fig. 14 is a sectional view schematically showing a state in which a detection hole is installed by a method of detecting a gas hole for confirming whether or not a gas leakage is caused in an underground pipe according to the present invention, Fig. 15 is a cross- Fig. 2 is a schematic view of a core drill according to the present invention;

4 to 6, the detection hole for checking the presence or absence of gas leakage in the underground pipe according to the present invention includes a detection unit 100, a reinforcement unit 200, a display unit 300, and a locking unit 400 ).

At this time, the detection unit 100 is formed in the shape of a tube provided with a hollow 110 so that the leaked gas can be ventilated, a tightening groove 120 is formed on one side of the outer circumference, a first fastening part 120 is provided on the upper end, Are formed to have a predetermined length and are embedded in the ground.

In addition, the detecting unit is formed of a metal material having excellent water resistance and corrosion resistance, and may be formed of a stainless steel material.

In addition, the detecting unit may be formed to have a length of 20 cm to 30 cm, so that the detecting unit can be embedded more deeply than the surface layer of the ground (packed in a thickness of about 15 cm). However, the detecting unit can be variously manufactured according to the site conditions.

As shown in FIG. 7, the detecting unit may further include a stainless steel auxiliary pipe 140 inside the hollow 110 to reinforce corrosion resistance.

That is, when the detection unit is made entirely of stainless steel, the economical efficiency is lowered as the production cost increases. Therefore, the detection unit is formed of a metal material or synthetic resin material (such as reinforced plastic) And the auxiliary tube 140 made of stainless steel is inserted and fixed in the hollow portion of the detection portion, thereby maximizing the efficiency.

The reinforcing part 200 is provided with a first engaging part 210 at the lower part to be coupled to the first fastening part of the detecting part, at least one flow preventing groove 220 is formed on the outer circumferential surface thereof, The second engaging portion 230 is formed.

At this time, the first fastening portion and the first fastening portion may be formed to be fastened in the form of a screw, and the design of the female thread / male screw shape may be possible according to the field conditions or the designer's intention.

In addition, the flow-preventing groove is provided to prevent rotation of the reinforcing portion due to an external factor after the reinforcing portion is embedded. The reinforcing portion may be prevented from rotating with the surface layer (asbestos portion) embedded in the reinforcing portion.

8A to 8B, the reinforcing portion may have a tapered portion 201 formed on an outer circumferential surface thereof such that the diameter d2 of the lower end portion may be smaller than the diameter d1 of the upper end portion.

The tapered portion 210 may be formed in a narrow shape at the lower end when the detection hole is removed during a maintenance operation such as repackaging the road, and can be easily removed from the ground.

The display unit 300 includes a second fastening unit 310 corresponding to the second fastening unit of the reinforcing unit and is coupled to the upper portion of the reinforcing unit and the upper portion of the second fastening unit is communicated with the hollow of the detection unit A disk-shaped cover 330 having a through hole 320 is formed. The cover has a third coupling part 340 formed on an inner circumferential surface of the through hole.

At this time, the display unit is formed with the second fastening part 310 to be coupled to the second fastening part of the reinforcing part, and the upper surface is coupled to the upper part of the second fastening part so that the upper surface is exposed on the ground.

9, the display unit displays the identification information on the upper surface of the display unit exposed on the ground so that the identification information 350 about the gas pipeline embedded in the underground can be easily viewed from the outside .

At this time, the identification information may be information including the direction of the gas pipe, the kind of the gas, the depth of buried floor, or the manufacturer, and may be formed in the form of a relief or a relief.

In addition, the second and the second fastening portions can be fastened to each other in a screw shape, and it is possible to change the shape of the female screw / male screw shape according to the intentions of the field dog or the designer.

In addition, the display unit may have at least one anti-tampering groove 360 formed on its upper surface.

In this case, an anti-theft sensor (not shown) may be installed inside the anti-theft groove, and a separate release member (not shown) may be provided to transmit the signal corresponding to the identification code to the anti- When the display unit is removed by a tool other than the member, the user is prompted to send three notification messages.

In addition, when two or more theft prevention grooves are disposed, they may be arranged in an arbitrary form so that they can be removed only by the release member that matches the number and arrangement of the theft prevention grooves.

Meanwhile, the locking portion 400 is coupled to the upper portion of the through hole to close the through hole of the display portion, and the third coupling portion 410 is provided on the outer circumferential surface to be coupled to the third coupling portion.

At this time, the third fastening portion and the third fastening portion can be fastened to each other in the form of a screw, and it is possible to change the shape of the female thread / male screw shape according to the intentions of the field dog or the designer.

Such a locking portion is advantageous in that it is possible to easily confirm whether or not the gas leakage occurs by removing the locking portion without the hassle of removing all the existing display nails.

As shown in FIGS. 10 to 12, the reinforcing portion is provided at a lower portion of the reinforcing portion so as to prevent damage or damage due to an external force applied to the ground such as a person or an automobile after the detection hole is completely buried in the ground The buffer part 500 may further be constructed.

The buffer part has an upper end embedded in the insertion hole formed along an outer circumference of the lower surface of the reinforcing part and a lower end formed to contact the ground. The fixing flange 510, the extension part 520, the sliding part 530, A support flange 540, and a cushioning spring 550.

The fixing flange 510 may be fixed to the lower surface of the reinforcing portion using fixing bolts. The extending portion 520 may be integrally extended downward from the fixing flange 510, A guide projection 560 is provided on the outer circumferential surface of the guide plate 560. [

The sliding portion 530 may slide up and down along the outer wall of the extension portion 520 while the extension portion 520 may slide up and down along the inner wall of the sliding portion 530.

A guide slot 570 may be formed in the up and down direction of the sliding part 530 such that the guide protrusion 560 is inserted into the guide slot 570, So that the sliding portion 530 can be stably operated up and down along the outer wall of the extension portion 520.

That is, the guide protrusion 560 and the guide slot 570 prevent the reinforcing portion from being swayed from side to side.

A buffer spring 550 is provided between the fixing flange 510 and the support flange 540 so that the elastic force of the buffer spring 550 is increased or decreased according to the load applied to the buffer. So that the load applied to the reinforcing portion is evenly dispersed.

It is preferable that the upper and lower ends of the cushioning spring 550 are fixed to the fixing flange 510 and the supporting flange 540, And a second fixing part (not shown) may be formed on the upper surface of the support flange 540, to which the lower end of the buffer spring 550 is inserted and fixed.

As shown in FIG. 10, the cushion unit 500 having the above-described structure is provided with a plurality of cushions 500, and the cushion unit 500 is disposed along the outer circumference around the center of the reinforcing unit, so that the load can be efficiently dispersed.

As shown in FIGS. 11 to 12, the auxiliary buffer unit 600 may include an auxiliary flange 610, an auxiliary spring 620, .

The auxiliary flange 610 is a member disposed under the support flange 34 and an auxiliary spring 620 is provided between the auxiliary flange 610 and the support flange 34.

A bellows 630 is provided outside the auxiliary flange 610 and the auxiliary spring 620 to prevent the auxiliary flange 610 and the auxiliary spring 620 from being separated from the lower portion of the support flange 540 .

Since the auxiliary buffer part 600 having the above-described structure can disperse the load applied to the buffer spring 550 by the load applied to the buffer part, the elastic restoring force of the buffer spring 550 can be maintained for a long time It has the advantage of long life.

As shown in FIG. 13, in the method of burying the detection hole 10 for checking whether there is gas leakage in the underground pipe, , Marking the gas piping embedded in the ground on the ground surface 20 at a predetermined interval (S100); A step S200 of drilling a portion marked on the paper by a predetermined depth using a drill equipped with a core drill 700 to prepare a buried hole; A step (S300) of inserting a detection hole (10) including a detecting unit (100), a reinforcing unit (200), a display unit (300) and a locking unit inside the buried hole; And a control unit.

Here, the marking is usually performed every 50 m, but may be set in units of 100 m to 500 m according to the site conditions.

As shown in FIG. 15, the core drill 700 includes a small bit 710 for drilling a bore corresponding to the diameter and length of the detection unit 100; A middle bit 720 in the form of a core bit for forming a bore corresponding to a diameter and a length of the reinforcing part 200 formed on the small bit; And a large bit (730) in the form of a core bit for forming a hole corresponding to a diameter and a height of the display unit (300), the large bit being formed on the middle bit; Are integrally formed.

In addition, optimal embodiments have been disclosed in the drawings and specification. Although specific terms are used herein, they are used for the purpose of describing the present invention only and are not used to limit the scope of the present invention described in the meaning of the claims or the claims. Therefore, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims

And a first fastening part 130 is formed at an upper end of the fastening part 120 so as to have a predetermined length so as to have a predetermined length. A detecting unit 100 embedded in the ground;

One or more flow preventing grooves 220 are formed on the outer circumferential surface and a second engaging portion 230 is formed on the upper end of the first engaging portion 210 so as to be coupled with the first fastening portion of the detecting portion. A reinforcing portion 200 for reinforcing the reinforcing member 200;

A second coupling part 310 corresponding to the second coupling part of the reinforcing part is provided to be coupled to the upper part of the reinforcing part and a through hole 320 communicating with the hollow of the detection part is provided on the upper part of the second coupling part, A cover 330 having a plate shape is formed, and the cover includes a display unit 300 having a third coupling part 340 formed on an inner circumferential surface of the through hole; And

And a locking part (400) coupled to an upper portion of the through hole to close the through hole of the display part and having a third coupling part (410) on the outer circumferential surface to be coupled to the third coupling part Detecting Ball for Checking Gas Leaks in Underground Piping.
2. The apparatus of claim 1, wherein the detecting unit (100)

And an auxiliary pipe (140) made of stainless steel is further provided on the inner side of the hollow (110) to reinforce corrosion resistance.
2. The apparatus of claim 1, wherein the reinforcing portion (200)

Wherein a tapered portion (201) is formed on the outer circumferential surface so that the diameter (d2) of the lower end portion may be smaller than the diameter (d1) of the upper end portion.
The display device according to claim 1, wherein the display unit (300)

Characterized in that the identification information is displayed on the upper surface of the display unit exposed on the ground so that the identification information (350) of the gas piping embedded in the underground can be easily observed from the outside. Index finger.
A method for burying a detection hole (10) for confirming whether or not a gas leakage of an underground pipeline is present,

(S100) marking the gas piping embedded in the ground on the ground surface 20 at a predetermined interval;

A step S200 of drilling a portion marked on the paper by a predetermined depth using a drill equipped with a core drill 700 to prepare a buried hole;

A step (S300) of inserting a detection hole (10) including a detecting unit (100), a reinforcing unit (200), a display unit (300) and a locking unit inside the buried hole; Wherein the method comprises the steps of: (a) inserting a detection hole for checking whether or not a gas leakage occurs in an underground buried pipe;
6. The apparatus of claim 5, wherein the core drill (700)

A small bit 710 for drilling a diameter corresponding to a diameter and a length of the detection unit 100;

A middle bit 720 in the form of a core bit for forming a bore corresponding to a diameter and a length of the reinforcing part 200 formed on the small bit; And

A large bit 730 in the form of a core bit for forming a hole corresponding to the diameter and height of the display unit 300; Wherein the method comprises the steps of: (a) inserting an inspecting hole into the underground buried pipe to confirm whether or not gas leakage occurs in the underground buried pipe;