KR102076155B1 - Leakage of piping detector - Google Patents

Abstract

The present invention is a pipe leakage detection device provided in the inner pipe and the outer pipe, the pipe is provided with a heat insulating material between the inner pipe and the outer surface, the insulator attached to the outer peripheral surface of the inner pipe, disposed on top of the insulator, the material of the inner pipe A sacrificial electrode provided with a metal having a higher ionization tendency, a pipe leakage detecting device electrically connected to the sacrificial electrode, and including a signal transmitting unit for transmitting a leak signal and a wire connecting the signal transmitting unit and the inner tube do.

Description

Leakage of piping detector

An embodiment relates to a pipe leak detection apparatus. More specifically, the present invention relates to a pipe leakage detection device that generates a current using the principle of galvanic corrosion generated by a potential difference between dissimilar metals, and sends a leak signal using the generated current.

Conventional double pipe foams polyurethane, which is a thermal insulation material between inner tube and exterior to prevent temperature loss when transporting heat or steam produced by district heating or cogeneration plant, and leaks due to internal tube damage. The sensing line is inserted inside the insulation to detect and check its position.

A conventional double tube is briefly described with reference to FIG.

As shown in FIG. 1, the conventional double pipe is formed on the heat insulating material 30 and the heat insulating material 30 formed by foaming polyurethane between the inner pipe 10, the exterior 20, and the inner pipe 10 and the exterior 20. When the inner tube 10 is damaged and is in contact with the water absorbed by the heat insulating material 30, a detection line 31 for detecting damage to the external appearance is inserted into the heat insulating material 30 as a short occurs.

However, in the conventional double tube, as the sensing line 31 is inserted into the heat insulating material 30, as shown in FIG. 1, when the inner tube is damaged and the material of the inner tube is leaked (installed), the exterior is damaged and When water enters, since water is absorbed by the heat insulating material 30, the water comes into contact with the sensing line 310, so that the sensing line 310 takes a long time to detect a leak or inflow due to damage to the inner tube or the exterior. There is a problem that it is delayed and cannot take action quickly.

In addition, the method using the detection line 31 has a problem in that it is not possible to specify the location of the leak and requires a separate position detection.

The embodiment provides a pipe leak detection apparatus capable of identifying a location of a leak while preventing corrosion of a pipe by using a sacrificial electrode.

The problem to be solved by the present invention is not limited to the above-mentioned problem and other problems not mentioned herein will be clearly understood by those skilled in the art from the following description.

An embodiment of the present invention, the pipe leakage detection device provided in the pipe provided with the heat insulating material between the inner tube and the outer tube, the inner tube and the outer surface, comprising: an insulator attached to the outer peripheral surface of the inner tube; A sacrificial electrode disposed on the insulator and made of a metal having a higher ionization tendency than a material of the inner tube; A signal transmitting unit electrically connected to the sacrificial electrode and transmitting a leak signal; And an electric wire connecting the signal transmitting unit and the inner tube.

Preferably, the outer surface of the sacrificial electrode may be characterized in that the water absorbing member is provided.

Preferably, the pipe leakage detection device may be provided in plurality, and at least one of the pipe leakage detection devices may be disposed under the inner tube.

Preferably, the plurality of pipe leakage detection device may be connected to the connection portion to surround the outer peripheral surface of the inner tube.

Preferably, the inner tube is made of a material containing an iron element, the insulator may be characterized in that it comprises a magnet.

Preferably, the signal transmitting unit may be characterized in that for transmitting different signals.

Preferably, the receiving unit for receiving a signal transmitted from the signal transmission unit; And a determining unit determining whether a pipe is leaked by using the signal of the receiving unit.

Preferably, the determination unit may maintain a warning state when the first signal transmitted from the signal transmission unit is generated, and may determine that the leakage of the pipe when the secondary signal is received.

According to the embodiment, there is an effect that can quickly detect the leakage of the pipe at a specific position or section.

In addition, there is an effect that can reduce the construction cost for repair or repair by specifying the exact location.

In addition, even if the leakage occurs using the sacrificial metal has the effect of preventing the corrosion of the pipe.

The various and advantageous advantages and effects of the present invention are not limited to the above description, and will be more readily understood in the course of describing specific embodiments of the present invention.

1 is a view showing a conventional double tube structure,
2 is a structural diagram of a pipe leak detection apparatus according to an embodiment of the present invention,
3 is an internal structural diagram of a pipe leak detection apparatus of FIG.
4 is a view showing the arrangement of the pipe leak detection apparatus of FIG.
5 is a view illustrating a state in which water is leaked in one region of a pipe.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated and described in the drawings. However, this is not intended to limit the embodiments of the present invention to specific embodiments, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the embodiments.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the embodiments, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of example embodiments. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present disclosure does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

In the description of the embodiments, when one element is described as being formed "on or under" of another element, it is on (up) or down (on). or under) includes both two elements being directly contacted with each other or one or more other elements are formed indirectly between the two elements. In addition, when expressed as "on" or "under", it may include the meaning of the downward direction as well as the upward direction based on one element.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be given the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted.

1 to 5 clearly show only the main features in order to conceptually clearly understand the present invention, and as a result, various modifications of the drawings are expected, and the scope of the present invention is limited by the specific shapes shown in the drawings. It doesn't have to be.

FIG. 2 is a structural diagram of a pipe leak detecting apparatus according to an exemplary embodiment of the present invention, FIG. 3 is an internal structural diagram of a pipe leak detecting apparatus of FIG. 2, and FIG. 4 is a view illustrating an arrangement of the pipe leak detecting apparatus of FIG. 2.

2 to 4, the pipe leakage detection apparatus 100 according to an embodiment of the present invention is a heat insulating material 30 between the inner tube 10 and the outer tube 20, the inner tube 10 and the outer tube 20. It is installed in the pipe provided.

The inner tube 10 may be supplied with a heat source mainly through hot water or steam produced in a group heating or cogeneration plant. Inner tube 10 may be provided in the shape of a cylinder, it may be provided with a material containing an iron element. In one embodiment, the inner tube 10 may be made of a material of carbon steel.

The exterior 20 may be provided with a double tube structure together with the inner tube 10. In one embodiment, the outer tube 20 has the same center as the inner tube 10 and has a radius larger than that of the inner tube 10, so that hot water or steam, which is transferred to the inner tube 10, loses heat during transportation. Do not.

The thermal insulation material 30 is formed between the inner tube 10 and the exterior 20, it is possible to minimize the heat loss generated during the transfer of the heat source. In one embodiment, the insulating material 30 may be a polyurethane material, it may be modified to various materials to prevent the loss of the heat source.

Pipe leak detection apparatus 100 according to an embodiment of the present invention is provided with an insulator 110, a sacrificial electrode 120, a signal transmitting unit 130, a wire 140, a receiver 160 and the determination unit 170. can do.

The insulator 110 may be attached to the outer circumferential surface of the inner tube 10 to prevent electrical contact between the sacrificial electrode 120 and the inner tube 10 including the iron element. The insulator 110 may be larger than the bottom of the sacrificial electrode 120 to prevent the sacrificial electrode 120 from contacting the inner tube 10. In one embodiment, the insulator 110 may be provided with a rubber material, but is not limited thereto, and may be provided with various materials for electrical blocking.

In addition, the insulator 110 may include a magnet 111. This is to facilitate the attachment of the pipe leakage detection apparatus 100 to the inner tube (10). In one embodiment, the magnet 111 may be attached to the lower portion of the insulator 110 or may be provided in a structure inserted into the insulator 110.

The sacrificial electrode 120 is disposed above the insulator 110 and may be made of a metal having a higher ionization tendency than the material of the inner tube 10. The sacrificial electrode 120 is electrically connected to the inner tube 10 through the wire 140. In one embodiment, when the inner tube 10 is made of Fe material, the sacrificial electrode 120 may be Al, Mn or Zn having a higher ionization tendency of the metal than Fe.

The sacrificial electrode 120 disposed between the inner tube 10 and the outer tube 20 is a sacrificial electrode having a higher ionization tendency than the material of the inner tube 10 when water is introduced due to breakage of the inner tube 10 or the outer tube 20. 120 comes into contact with water to emit electrons.

The emitted electrons move to the inner tube 10 through the wire 140 connected to the signal transmitting unit 130, through which current is generated and flows to the signal transmitting unit 130.

In addition, between the inner tube 10 and the exterior 20 is generally inserted into a thermal insulation material 30 made of polyurethane, polyurethane does not absorb the water, the water flows through the gap. In this case, water may flow down without time to react with the sacrificial electrode 120. In order to prevent such a problem, the water absorbing member 150 may be provided on the outer surface of the sacrificial electrode 120.

The water absorbing member 150 may be formed of a material having a property of absorbing water such as a sponge. The water absorbing member 150 may be provided in a structure surrounding the sacrificial electrode 120. When the water leaks due to breakage of the pipe, the sacrificial electrode 120 may react with the water even if water leaks. Can be given.

The signal transmitter 130 may be electrically connected to the sacrificial electrode 120 and may transmit a leak signal. The signal transmitter 130 is connected to one side of the sacrificial electrode 120, and the wire 140 may electrically connect the signal transmitter 130 and the inner tube 10 in one region.

The signal transmitter 130 may transmit the leakage signal to the outside by using a current flowing through the movement of electrons ionized by the sacrificial electrode 120. Due to the nature of the pipes buried underground, the electric transmitter may use wireless communication, and in one embodiment, the electric transmitter may use RFID.

The signal transmitter 130 may be provided in plural to transmit a signal. If water leaks from the top, water flows down by gravity. In this case, the signal transmitting unit 130 may be provided in plural on the outer circumferential surface of the inner tube 10 to transmit a plurality of signals. In this case, the plurality of signal transmitters 130 may transmit different signals. In this case, a signal installed at a pipe and a signal of the plurality of signal transmitters 130 installed at the same point may be set differently.
In addition, as shown in FIG. 2, the pipe leakage detecting apparatus 100 may be provided in plural and arranged in the axial direction of the pipe, and the signal transmitting unit 130 provided in each of the pipe leakage detecting apparatus 100 may have different signals. Can be sent. The determination unit 170 may determine the position of the pipe leakage based on the signal transmitted from the signal transmitter 130.

The pipe leakage detecting apparatus 100 may be provided in plural and arranged in the circumferential direction of the inner tube.
In one embodiment, the plurality of pipe leakage detection device 100 may be connected to the connection portion 200 may be provided to surround the outer peripheral surface of the inner tube (10). The pipe leak detection apparatus 100 may be disposed at the connection part 200 at a predetermined interval, and the connection part 200 may facilitate assembly on the inner wall.

In addition, at least one of the leak detection apparatus may be disposed under the inner tube (10). This will increase the cost of installing the leak detection device on the entire outer surface of the inner tube (10). In order to solve this problem, when a leak occurs in the space between the inner tube 10 and the exterior 20, the leaked water is collected by gravity. In this case, the water flowing downward reacts with the leak detection device disposed below the inner tube 10, and thus, the problem of non-leak detection according to the installation position of the leak detection device may be solved.

The receiver 160 may receive a signal transmitted from the signal transmitter 130 on the ground and transmit it to the determiner 170. The receiver 160 may receive signals transmitted from the signal transmitters 130.

The determiner 170 may determine whether the pipe leaks using the signal of the receiver 160.

The determination unit 170 may maintain a warning state when the first signal transmitted from the signal transmission unit 130 occurs, and may determine a leakage of the pipe when a secondary signal is received.

If the pipe is buried underground, a signal may be generated by the water inside the pipe. Such a signal may be generated even when the pipe is not leaked, and when a wrong judgment is made, a problem of repairing a normal pipe occurs.

In order to solve this problem, the determination unit 170 may determine that leakage occurs in the pipe when different signals are transmitted from the signal transmission units 130 arranged in plural.

5 shows a state in which a leak occurs in one region of the pipe.

Referring to FIG. 5, when a leak occurs in the pipe, the water passes the third signal transmitting unit 130 and transmits a signal. Thereafter, water flows downward, and another signal is generated in the fourth signal transmitting unit 130 disposed below the space between the inner tube 10 and the outer tube 20. Then, when the water is filled, the continuous signal is generated in the second signal transmitter 130 and the third signal transmitter 130.

As such, the determination unit 170 may use the characteristic that water is collected downward when a leak occurs in the pipe, and may determine whether the leak is based on a plurality of signals. This can reduce the error of leak determination and reduce the steam recovery costs.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: inner tube
20: appearance
30: insulation
100: pipe leak detection device
110: insulator
111: Magnet
120: sacrificial electrode
130: signal transmission unit
140: wires
150: water absorbing member
160: receiver
170: judgment unit
200: connection

Claims (8)

In a pipe leak detection device disposed between the inner pipe and the heat insulating material in the pipe provided with the heat insulating material between the inner pipe and the outer pipe, the inner pipe and the outer pipe,
An insulator attached to an outer circumferential surface of the inner tube;
A sacrificial electrode disposed on the insulator and made of a metal having a higher ionization tendency than a material of the inner tube;
A signal transmitter electrically connected to the sacrificial electrode and configured to wirelessly transmit a leak signal; And
An electric wire connecting the signal transmitting unit and the inner tube;
Including;
When leakage occurs in the pipe, the pipe leakage detection device, characterized in that the current generated in the sacrificial electrode is moved to the signal transmitting unit by the contact of the sacrificial electrode and water to transmit the leak signal. According to claim 1,
Piping leak detection device, characterized in that the water absorption member is provided on the outer surface of the sacrificial electrode. According to claim 1,
The pipe leakage detection device is provided in plurality and arranged in the circumferential direction of the inner pipe,
At least one of the pipe leakage detection device is disposed in the lower portion of the inner pipe pipe leakage detection device. The method of claim 3, wherein
A plurality of pipe leakage detection device is connected to the connection portion pipe leakage detection device, characterized in that surrounding the outer peripheral surface of the inner pipe. According to claim 1,
The inner tube is provided with a material containing an iron element,
The insulator is a pipe leakage detection device, characterized in that the magnet. According to claim 1,
The leak detection device of the pipe is provided in plurality and arranged in the axial direction of the pipe,
The signal leaking unit provided in the pipe leak detection device, respectively, the pipe leak detection device, characterized in that for transmitting different signals. The method of claim 6,
A receiver which receives a signal transmitted from a plurality of signal transmitters; And
Determination unit for determining whether the leakage of the pipe using the signal of the receiver;
Piping leak detection device further comprising. The method of claim 7, wherein
The determination unit
When the first leak signal transmitted from the signal transmitting unit occurs, the warning state is maintained, and when the secondary signal is received, the pipe leak detection apparatus characterized in that it is determined to leak the pipe.

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