KR-20260067628-A - Flange leakage indicator and Flange leakage monitoring system

KR20260067628AKR 20260067628 AKR20260067628 AKR 20260067628AKR-20260067628-A

Abstract

A flange leakage indicator and a flange leakage monitoring system are provided. A flange leakage indicator according to one aspect of the present invention is a flange leakage indicator that is installed on a flange formed by contact between a first flange and a second flange and can indicate whether there is leakage in the contact portion, and comprises a cover that fluidly separates the contact portion formed by contact between the first flange and the second flange from an external space.

Inventors

김종록
김석

Assignees

한국원자력연구원

Dates

Publication Date: 20260513
Application Date: 20241106

Claims (17)

A flange leakage indicator installed in a flange assembly comprising a contact portion formed by the contact portion between one end of a first flange and one end of a second flange in a predetermined first direction, capable of indicating whether there is leakage in the contact portion, A cover that fluidly separates the above contact portion from the external space; comprising, The above cover is, A flange leakage indicator in which the first direction side end along the outer circumference of the first end of the first flange contacts the outer surface of the first end of the first flange, and the direction side end opposite to the first direction along the outer circumference of the second end of the second flange contacts the outer surface of the second end of the second flange.
In Article 1, The above cover is a flange leakage indicator formed in the shape of a closed surface corresponding to the shape of the outer circumference of the contact portion.
In Article 1, The above cover is a flange leakage indicator in which one end portion along the longitudinal side of the cover can cover the contact portion while wrapping around the contact portion in the circumferential direction.
In Paragraph 3, The above cover has a first fastening portion formed at one end of the longitudinal side that extends in the longitudinal direction of the cover, and A flange leakage indicator having a second fastening part formed at the other end of the longitudinal side in a shape corresponding to the first fastening part, and having a fastening groove that is recessed in the longitudinal direction of the cover.
In Paragraph 4, The above-mentioned first fastening part is, It includes a first extension portion extending in the longitudinal direction of the above-mentioned cover, and a first hook formed at the end of the first extension portion and extending in a direction inclined at a predetermined angle with respect to the first extension portion. A flange leakage indicator comprising: the second fastening portion, which includes two second extension portions extending along the longitudinal direction of the cover with the fastening groove in between, and a second hook formed at the end of the second extension portion and extending in a direction inclined at a predetermined angle with respect to the second extension portion.
In Article 5, The first hook extends in a direction perpendicular to the first extension, and The second hook above is a flange leakage indicator extending in a direction perpendicular to the second extension.
In Article 5, Two first hooks are formed in a direction away from each other from the first extension, and The second hook is a flange leakage indicator formed in a direction that moves closer to each other from two second extensions.
In Article 1, When the pressure in the space between the contact part and the cover increases, the above cover A flange leakage indicator that swells while maintaining a state of fluidically separating the contact portion from the external space.
In Article 8, If the above cover bulges, The above cover is a flange leakage indicator in which the color of the bulging part changes.
In Article 1, The above cover is a flange leakage indicator in which a portion of it ruptures when the pressure in the space between the contact portion and the cover exceeds a predetermined standard.
In Article 1, A flange leakage indicator further comprising a fixing member disposed radially outward from the cover of the flange assembly to fix the cover to the flange assembly.
In Article 11, The above fixing member comprises a first fixing member that fixes the cover to the first flange, and A flange leakage indicator comprising a second fixing member that fixes the above cover to the second flange.
In Article 11, The above-mentioned fixing member is a flange leakage indicator formed in the shape of a closed surface corresponding to the shape of the perimeter of the contact portion.
In Article 11, The above-mentioned fixing member is a flange leakage indicator that extends in one direction, wherein the end on the extension direction side can be coupled to the cover while wrapping the cover around the contact portion in a perimeter direction.
A flange leakage indicator according to any one of claims 1 to 14; and A flange leakage monitoring system comprising: a camera that photographs the flange leakage indicator from one side.
In Article 15, A control unit electrically connected to the camera and recognizing whether there is leakage in the flange assembly from an image captured by the camera; A flange leakage monitoring system further comprising: an alarm that sends a warning to the control unit when leakage of the flange assembly is confirmed.
In Article 16, A flange leakage monitoring system in which the control unit recognizes whether there is leakage in the flange assembly through a change in the shape of the flange leakage indicator.

Description

Flange leakage indicator and Flange leakage monitoring system The present invention relates to a flange leakage indicator and a flange leakage monitoring system, and more specifically, to a flange leakage indicator and a flange leakage monitoring system capable of detecting even minute amounts of fluid leakage between flanges. A flange connecting pipes through which gas or fluid flows is generally formed in a shape where two pipes are connected. At this stage, fluid leakage frequently occurs through the contact point where the two pipes meet and connect. Accordingly, it is essential to verify whether leakage occurs at the contact point even after the flange has been installed. FIG. 1 is a diagram illustrating the path of fluid leakage at the contact portion between a first flange and a second flange forming a flange assembly. FIG. 2 is a diagram illustrating an example of a conventional flange leakage monitoring system. As shown in Fig. 2, when a sensor capable of detecting fluid is provided near the flange to detect fluid leakage from the flange, there was a problem in that a minute amount of fluid was not detected when the flange was located in a space where fluid could communicate with the outside air. Furthermore, conventionally, optical techniques such as video recording or acoustic detection methods that detect noise generated by fluid leakage were used to detect fluid leaks; however, these methods also had the problem that they could not detect leaks when the fluid was leaking in small amounts. In addition, infrared imaging techniques for detecting the temperature of leaking fluids were only capable of detection when the leaking fluid showed a significant temperature difference from the surrounding atmosphere. In addition, a method of applying a predetermined amount of foam to the flange and observing its growth has been proposed; however, even in this case, if the foam growth is slow, observation takes a long time, and accuracy is reduced due to the risk of mistaking it for no leakage occurring. Figure 1 is a diagram illustrating the path of fluid leakage at the contact portion between the first flange and the second flange forming a flange assembly. Figure 2 is a drawing illustrating an example of a conventional flange leakage monitoring system. FIG. 3 is a perspective view illustrating a flange leakage indicator according to one embodiment of the present invention. FIG. 4 is a front view showing a fixing member applied to the cover of a flange leakage indicator according to one embodiment of the present invention. FIG. 5 is a perspective view illustrating an example of a method in which the cover of a flange leakage indicator according to one embodiment of the present invention is coupled to a flange. FIG. 6 is a drawing illustrating a modified example of a flange leakage indicator according to one embodiment of the present invention. FIG. 7 is a drawing showing the cover of a flange leakage indicator according to one embodiment of the present invention bulging due to fluid leakage. FIG. 8 is a drawing showing the cover of a flange leakage indicator according to one embodiment of the present invention ruptured due to fluid leakage. FIG. 9 is a drawing illustrating another variation of the cover shape of a flange leakage indicator according to one embodiment of the present invention. FIG. 10 is a drawing illustrating another variation of the cover shape of a flange leakage indicator according to one embodiment of the present invention. FIG. 11 is a drawing illustrating the structure of a cover of a flange leakage indicator according to one embodiment of the present invention illustrated in FIG. 10. FIG. 12 is a drawing illustrating a flange leakage monitoring system according to one embodiment of the present invention. Figure 13 is a drawing showing the flange leakage indicator of the flange leakage monitoring system shown in Figure 12 in a swollen state. FIG. 14 is a diagram showing a camera of a flange leakage monitoring system according to one embodiment of the present invention being electrically connected to a control unit and an alarm. FIG. 15 is a drawing showing a camera and a flange of a flange leakage monitoring system according to one embodiment of the present invention placed inside a predetermined housing that is not visually exposed to the outside. Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. In the drawings, parts unrelated to the explanation have been omitted to clearly explain the present invention, and the same reference numerals have been used for identical or similar components throughout the specification. The words and terms used in this specification and claims are not limited to their ordinary or dictionary meani