Leak detection device

Abstract

Provided is a leak detection device. The leak detection device according to one embodiment includes a clamp member attached to a connection portion of a pipe, a color-changing member configured to surround at least a portion of an outer circumferential surface of the clamp member and changing color in response to gas leaked from the connection portion of the pipe, a first cover member configured to surround the clamp member and including at least one groove for confirming the color-changing member with the naked eye from the outside, and a second cover member configured to surround the first cover member along the outer circumferential surface of the first cover member and including a transparent material.

Description

[Technical Field]

[0001] The following description relates to an apparatus for monitoring and detecting gas and chemical leaks from pipe connections. [Background technology]

[0002] Vibrations and micro-vibrations generated inside pipes can cause loosening of pipe joints. Toxic gases and chemicals can also corrode and harden the seals at pipe joints and the internal O-rings of clamps, leading to leaks. If an accident occurs due to the leakage of toxic gases or chemicals, it can cause enormous damage to property, injuries, and damage to corporate reputation.

[0003] Furthermore, existing clamps used in pipe connections had the problem that it was difficult to visually confirm leaks of hazardous materials, making it difficult to remove the leaked materials. Summary of the Invention [Problem to be solved by the invention]

[0004] To provide a leakage detection device that enables leakage of dangerous substances to be confirmed with the naked eye.

[0005] To provide a leakage detection device capable of confirming leakage of hazardous materials by an optical sensor.

[0006] To provide a leakage detection device that prevents gas or chemical substances from leaking out of the leakage detection device and allows workers to safely remove dangerous substances.

[0007] To provide a leakage detection device capable of effectively removing dangerous substances when dealing with a leakage accident. [Means for solving the problem]

[0008] Provided is a leak detection device comprising: a clamping member attached to a pipe connection; a color-changing member configured to surround at least a portion of the outer circumferential surface of the clamping member and whose color changes in response to gas leaking from the pipe connection; a first cover member configured to surround the clamping member and including at least one groove for visually confirming the color-changing member from the outside; and a second cover member configured to surround the first cover member along the outer circumferential curved surface of the first cover member and including a transparent material.

[0009] According to one aspect, the leak detection device may further include an optical sensor that detects a color change of the color changing member through the at least one groove.

[0010] According to another aspect, the second cover member may further include a coupling member for coupling the optical sensor to a position corresponding to at least one groove included in the first cover member so that the optical sensor can detect a color change of the color-changing member.

[0011] According to another aspect, the coupling member may include a transparent material that allows the optical sensor to detect a color change in the color-changing member.

[0012] According to another aspect, the leak detection device may further include a drain for removing gas or chemicals leaked into a space between the clamp member and the first cover member.

[0013] According to another aspect, the drain may be characterized by connecting the space between the clamp member and the first cover member to the external space of the leak detection device by a groove formed in the first cover member and the second cover member.

[0014] According to another aspect, the leak detection device may further include a drain cover configured to surround one side of the drain and be inserted into the second cover member through a groove formed in the second cover member to prevent leakage of gas or chemicals through the drain.

[0015] According to another aspect, the leak detection device may further include at least one gas detection sensor disposed through a groove formed in the first cover member and configured to detect gas or chemical substance leaking from the piping connection portion into the first cover member.

[0016] According to another aspect, the clamping members may include an upper clamping member that covers an upper side of the piping, and a lower clamping member that covers a lower side of the piping.

[0017] According to another aspect, the first cover member may include an upper first cover member configured to surround the upper clamp member, and a lower first cover member configured to surround the lower clamp member.

[0018] According to another aspect, the second cover member may be characterized by including an upper second cover member configured to surround the upper first cover member, and a lower second cover member configured to surround the lower first cover member.

[0019] According to another aspect, the leak detection device may further include a fluororubber member that covers a gap between the upper second cover member and the lower second cover member and a gap between the second cover member and the piping.

[0020] According to another aspect, the leakage detection device may further include a locking device that connects the upper second cover member and the lower second cover member to prevent arbitrary separation of the upper second cover member and the lower second cover member.

[0021] According to another aspect, the first cover member may be characterized by including austenitic stainless steel as a material.

[0022] According to another aspect, the second cover member may be characterized by including polycarbonate or polyphenylene sulfide as a material.

[0023] According to another aspect, the color-changing member may be characterized by including an upper color-changing member configured to surround at least a portion of the upper outer peripheral surface of the clamping member along the upper outer peripheral curved surface of the clamping member, and a lower color-changing member configured to surround at least a portion of the lower outer peripheral surface of the clamping member along the lower outer peripheral curved surface of the clamping member.

[0024] According to yet another aspect, the leak detection device may further include at least one gas detection sensor disposed through a groove formed in the first cover member and configured to detect gas leaking from the piping connection portion into the inside of the first cover member. [Effects of the Invention]

[0025] The color-changing member changes color depending on the leaked gas or chemical substance, the first cover member has a groove, and the second cover member includes a transparent material, so that leakage of hazardous materials can be confirmed with the naked eye.

[0026] The optical sensor detects the color change of the color-changing member, making it possible to confirm the leakage of hazardous materials.

[0027] This prevents gases and chemicals from leaking outside the leak detection device and provides workers with sufficient time to remove the hazardous materials.

[0028] When dealing with a hazardous material spill accident, the drain can effectively remove the hazardous material.

[0029] The sensor can easily detect leaks of hazardous materials and their locations.

[0030] The locking device can prevent any manipulation of the leak detection device.

[0031] A highly durable leak detection device can be provided by using a first cover member made of austenitic stainless steel and a fluororubber member that covers the gap between the first cover member. [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a diagram illustrating an example of a leak detection device according to an embodiment of the present invention. [Figure 2] 1 is a diagram illustrating an example of a leak detection device according to an embodiment of the present invention. [Figure 3] 1 is a diagram illustrating an example of a leak detection device according to an embodiment of the present invention. [Figure 4] 1 is a diagram illustrating an example of a leak detection device according to an embodiment of the present invention. [Figure 5] 1 is a diagram illustrating an example of a leak detection device according to an embodiment of the present invention. [Figure 6] 1 is a diagram illustrating an example of a leak detection device according to an embodiment of the present invention. [Figure 7] FIG. 2 is a diagram illustrating an example of a fluororubber member according to an embodiment of the present invention. [Figure 8] 4A and 4B are diagrams showing an example of an upper first cover member in one embodiment of the present invention. [Figure 9] 4A and 4B are diagrams showing an example of a lower first cover member in one embodiment of the present invention. [Figure 10] 5A and 5B are diagrams showing an example of a lower second cover member in one embodiment of the present invention. [Figure 11] 10A and 10B are diagrams illustrating an example of a drain and a drain cover according to an embodiment of the present invention. [Figure 12]FIG. 10 is a diagram illustrating an example of a leak detection device according to another embodiment of the present invention. [Figure 13] 10A and 10B are diagrams illustrating an example of an optical sensor and a coupling member according to another embodiment of the present invention. [Figure 14] 10A and 10B are diagrams illustrating an example of an optical sensor and a coupling member according to another embodiment of the present invention. [Figure 15] 10A and 10B are diagrams showing an example of a color change of a color-changing member in another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0033] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various modifications can be made to the embodiments, the scope of the claims of the patent application should not be limited or restricted by such embodiments. All modifications, equivalents, or alternatives to the embodiments should be interpreted as being included in the scope of the claims.

[0034] The terms used in the embodiments are merely used for the purpose of description and should not be construed as limiting. Singular expressions also include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should not be understood to preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0035] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments belong. Terms commonly used and as defined in dictionaries should be interpreted in accordance with the contextual meaning of the relevant art, and should not be interpreted as idealized or overly formal unless expressly defined in this application.

[0036] In addition, in the description with reference to the accompanying drawings, the same reference numerals will be assigned to the same components regardless of the reference numerals, and redundant description thereof will be omitted. In describing the embodiments, if a detailed description of related known technology is determined to unnecessarily obscure the gist of the embodiments, the detailed description thereof will be omitted.

[0037] Furthermore, when describing components of the embodiments, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are merely used to distinguish the component from other components, and should not be used to limit the essence, order, or sequence of the components. When a component is described as being "coupled," "coupled," or "connected" to another component, it should be understood that the component may be directly coupled or connected to the other component, but that other components may also be "coupled," "coupled," or "connected" between each component.

[0038] Components having functions common to those included in any one embodiment will be described using the same names in other embodiments. Unless otherwise specified, the description of one embodiment is applicable to other embodiments, and detailed description will be omitted to the extent that it overlaps.

[0039] 1 to 6 are diagrams showing an example of a leak detection device according to one embodiment of the present invention. The leak detection device 100 according to this embodiment may include a clamp member 110, a color-changing member 120, a first cover member 130, and a second cover member 140.

[0040] The clamp member 110 is attached to a connection of a pipe to prevent the connection from loosening and leakage of gases and chemicals. In this case, the clamp member 110 may include an upper clamp member 111 that covers the upper side of the pipe and a lower clamp member 112 that covers the lower side of the pipe.

[0041] The color-changing member 120 may be configured to surround at least a portion of the outer circumferential surface of the clamping member 110 and may be configured to change color depending on the leaked gas or chemical substance when gas leaks from a pipe connection. In this embodiment, an example is shown in which the color-changing member 120 is configured to surround the entire outer circumferential surface of the clamping member 110. In this case, as shown in FIG. 3 , the color-changing member 120 may form a space 310 for a threaded portion for connecting the upper clamping member 111 and the lower clamping member 112 to fasten the clamping member 110 to the pipe. In this embodiment, the color-changing member 120 may include an upper color-changing member 121 configured to surround at least a portion of the upper outer circumferential surface of the clamping member 110 (at least a portion of the upper clamping member 111) along the curved outer circumferential surface of the upper side of the clamping member 110, and a lower color-changing member 122 configured to surround at least a portion of the lower outer circumferential surface of the clamping member 110 (at least a portion of the lower clamping member 112) along the curved outer circumferential surface of the lower side of the clamping member 110.

[0042] The first cover member 130 may be configured to surround the clamp member 110. In this case, the first cover member 130 may include an upper first cover member 121 configured to surround the upper clamp member 111 of the clamp member 110 and a lower first cover member 122 configured to surround the lower clamp member 112 of the clamp member 110. The color-changing member 120 may be located between the clamp member 110 and the first cover member 130. As shown in FIG. 3 , the first cover member 130 may be configured to surround the clamp member 110 while being spaced a certain distance from the clamp member 110 and the color-changing member 120. The first cover member 130 may also be configured to surround at least one groove 133a and 133b. These grooves 133a and 133b may be used to visually confirm the color-changing member 120 located inside the first cover member 130 from the outside. For example, first groove 133a may be used to visually view upper color-changing member 121, and second groove 133b may be used to visually view lower color-changing member 122. In addition, to prevent leakage of gas or chemical substances, windows 134a and 134b made of a transparent material such as tempered glass or reinforced plastic may be formed in grooves 133a and 133b.

[0043] Second cover member 140 may be configured to surround first cover member 130 and may be made of a transparent material. That is, leak detection device 100 can prevent gas or chemicals leaking from a pipe connection from leaking outside leak detection device 100 by using grooves 133a and 133b and windows 134a and 134b of first cover member 130, and second cover member 140 made of a transparent material, and can also provide a structure that allows a user to visually confirm a color change induced by a reaction between color change member 120 located inside first cover member 130 and the gas or chemical. Depending on the embodiment, second cover member 140 may be realized so that at least a portion thereof, such as portions corresponding to grooves 133a and 133b and windows 134a and 134b, is transparent. The second cover member 140 may include an upper second cover member 141 configured to surround the upper first cover member 131 and a lower second cover member 142 configured to surround the lower first cover member 132. In addition, depending on the embodiment, the leakage detection device 100 may further include a locking device (not shown) that connects the upper second cover member 141 and the lower second cover member 142 to prevent the upper second cover member 141 and the lower second cover member 142 from being accidentally separated. The locking device may be of any structure that can connect the upper second cover member 141 and the lower second cover member 142 to prevent the upper second cover member 141 and the lower second cover member 142 from being accidentally separated.

[0044] Meanwhile, the leak detection device 100 may further include at least one gas detection sensor 150a and 150b disposed through a groove formed in the first cover member 130 and configured to detect gas or chemical substances leaking into the first cover member 130 from the pipe connection. The gas detection sensors 150a and 150b may be configured to output light and sound when detecting gas or chemical substances leaking from the pipe connection. In this case, since the second cover member 140 is made of a transparent material as described above, a user can visually see the light output from the gas detection sensors 150a and 150b. According to an embodiment, the gas detection sensors 150a and 150b may be configured to transmit a warning signal to an external device via wireless communication in addition to outputting light and sound when detecting gas or chemical substances leaking from the pipe connection. The external device may be a server or a user terminal, and the server may transmit the warning signal to the user terminal to warn the user of the gas or chemical substance leak. In this case, the identifiers of the gas detection sensors 150a and 150b may be transmitted along with the warning signal to identify the leak detection device 100 in which a gas or chemical leak has occurred, and such identifiers make it possible to quickly determine the location of the leak detection device 100 in which a gas or chemical leak has occurred.

[0045] The leak detection device 100 may further include a drain 160 for removing gas or chemicals leaked into the space between the clamp member 110 and the first cover member 130. For example, the drain 160 may connect the space between the clamp member 110 and the first cover member 130 to the exterior of the leak detection device 100 via a groove formed in the first cover member 130 and the second cover member 140. The drain 160 may effectively remove leaked hazardous materials. The leak detection device 100 may further include a drain cover 170 configured to surround one side of the drain 160 and be inserted into the second cover member 140 through a groove formed in the second cover member 140 to prevent leakage of gas or chemicals through the drain 160. Here, one side of the drain 160 may be a portion of the drain 160 exposed to the exterior of the leak detection device 100.

[0046] Meanwhile, the first cover member 130 may include austenitic stainless steel as a material. As a more specific example, SUS304, which is used for treatment water tanks and the like due to its excellent chemical resistance and heat resistance, may be used as the material for the first cover member 130. However, austenitic stainless steel and SUS304 are merely examples for the first cover member 130, and any material that can provide high durability may be used without limitation.

[0047] The second cover member 140 may be made of, but is not limited to, polycarbonate. For example, any material that is transparent and chemical resistant can be used as the material for the second cover member 140 without any restrictions.

[0048] Meanwhile, the color-changing member 120 may be a color-changing sensor including litmus paper or a color-changing sensor including a nanofiber membrane coated with a color-changing dye, but is not limited to these. Any color-changing sensor that can be placed and functioned between the clamp member 110 and the first cover member 130 and changes color upon detecting gas or chemicals leaking from the connection of the pipe in which the leak detection device 100 is installed can be used as the color-changing member 120 without any restrictions.

[0049] Furthermore, the leak detection device 100 may further include a fluororubber member that covers the gap between the upper second cover member 141 and the lower second cover member 142 and the gap between the second cover member 140 and the piping. Figure 7 is a diagram showing an example of a fluororubber member according to one embodiment of the present invention. The high durability of the fluororubber as well as the first cover member 130 made of austenitic stainless steel can provide a leak detection device 100 with excellent chemical resistance.

[0050] 8 is a diagram showing an example of an upper first cover member according to an embodiment of the present invention. As described above, the upper first cover member 131 according to this embodiment allows the upper color-changing member 121 inside to be observed with the naked eye through the first groove 133a in which the first window 134a is installed. In addition, the upper first cover member 131 may further include a groove 810 for installing a first gas detection sensor 150a that can detect gas or chemical substances that have leaked into the first cover member 130 via a piping connection portion.

[0051] 9 is a diagram showing an example of a lower first cover member according to an embodiment of the present invention. As described above, the lower first cover member 132 according to this embodiment allows the upper color-changing member 122 inside to be observed with the naked eye through the second groove 133b in which the second window 134b is installed. The lower first cover member 132 may further include a groove 910 for installing a second gas detection sensor 150b that can detect gas or chemical substances that have leaked into the first cover member 130 via a piping connection. The lower first cover member 132 may also include a groove 920 for allowing one side of the drain 160 to flow into the first cover member 130.

[0052] 10 is a view showing an example of a lower second cover member according to an embodiment of the present invention. The lower second cover member 142 according to this embodiment may include a groove 1010 for allowing the drain 160 and the drain cover 170 to flow therein. As described above, the lower second cover member 142 may include a material that is transparent and chemically resistant.

[0053] FIG. 11 illustrates an example of a drain and a drain cover according to an embodiment of the present invention. The upper portion 1110 of the drain 160 may be connected to the first lower cover member 132 through the groove 920 described with reference to FIG. 9 and flow into the first cover member 130, and the lower portion 1120 of the drain 160 may be connected to the second lower cover member 140 through the groove 1010 described with reference to FIG. 10. In this case, a drain cover 170 for preventing gas or chemical substances from leaking through the drain 160 may surround the lower portion 1120 of the drain 160 and flow into the second cover member 140 together with the drain 160. If gas or chemical substances leak from a piping connection, a user of the leakage detection device 100 can remove the drain cover 170 from the drain 160 and then connect a valve 1130 to the drain 160 to efficiently remove the gas or chemical substances from the first cover member 130.

[0054] As described above, according to the embodiment of the present invention, the color-changing member that changes color depending on the leaked gas or chemical, the first cover member having grooves, and the second cover member including a transparent material allow for the leak of hazardous materials to be confirmed with the naked eye. Furthermore, when dealing with a hazardous material leak accident, the hazardous material can be effectively removed by draining. Furthermore, the presence or absence of a hazardous material leak and its location can be easily determined by the sensor. Furthermore, the locking device can prevent arbitrary manipulation of the leak detection device. Furthermore, the first cover member made of austenitic stainless steel and the fluororubber member that covers the gap between the first cover member provide a highly durable leak detection device.

[0055] The proposed technology can contribute significantly to the effective and precise detection of leaks that occur during the transportation and storage of gases and chemicals essential for semiconductor and display manufacturing processes. In particular, the use of a color-change sensor (e.g., color-change member 120) that can be visually identified through transparent windows (e.g., windows 134a and 134b) for gas leaks (e.g., Cl2, BCl3, BF3, SF6, CF4, SiF4, SiH3, etc.) and leaks of hazardous solvents such as hydrofluoric acid, hydrochloric acid, and sulfuric acid allows for accurate locating of the piping where the leak occurred. In particular, a combined system incorporating both a color-change sensor that can be visually identified and a gas sensor that can immediately detect reactions with gases and chemicals (e.g., an oxygen sensor that detects changes in oxygen concentration, or a semiconductor gas sensor or electrochemical gas sensor that changes resistance or induces changes in current / voltage due to a chemical reaction) can further improve the accuracy of gas and chemical leak diagnosis. Furthermore, by including a drain section (e.g., drain 160 and drain cover 170) that can discharge hazardous factors, there is an advantage in that a sufficient golden time can be secured between the gas alarm or visual identification and the leakage being blocked.

[0056] 12 is a diagram showing an example of a leak detection device according to another embodiment of the present invention. Leak detection device 1200 according to this embodiment may include an optical sensor 1210, a second cover member 1220, a window 1230 made of a transparent material, a gasket 1240, a first cover member 1250, a color-changing member 1260, a fluororubber member 1270, a locking device 1280, and a coupling member 1290.

[0057] Here, first cover member 1250 may correspond to first cover member 130 described above, second cover member 1220 may correspond to second cover member 140 described above, and color-changing member 1260 may correspond to color-changing member 120 described above. Also, window 1230 may correspond to windows 134a and 134b described above, and gasket 1240 may be disposed between first cover member 1250 and window 1230 to prevent gas leakage. Fluoro-rubber member 1270 may correspond to the fluoro-rubber member described with reference to FIG. 7. Locking device 1280 may connect the upper and lower portions of second cover member 1220 to prevent any separation of the upper and lower portions.

[0058] Meanwhile, optical sensor 1210 may detect the color change of color changing member 1260 through at least one groove included in first cover member 1250 (for example, a groove corresponding to at least one of grooves 133a and 133b). In the embodiment of FIG. 12, optical sensor 1210 may sense the color change of color changing member 1260 from the outside of second cover member 1220 including a transparent material through at least one groove of second cover member 1220 and first cover member 1250. According to an embodiment, optical member 1210 may be disposed between first cover member 1250 and second cover member 1220 and be realized to sense the color change of color changing member 1260 through at least one groove of first cover member 1250.

[0059] Furthermore, second cover member 1220 may include a coupling member 1290 for coupling optical sensor 1210 at a position corresponding to at least one groove included in first cover member 1260 so that optical sensor 1210 can detect a color change in color changing member 1260. In this case, coupling member 1290 may include a transparent material so that optical sensor 1210 can detect a color change in color changing member 1260.

[0060] The optical sensor 1210 can be any sensor capable of detecting the color change of the color changing member 1260, such as a photodiode, an optical camera, or a sensor capable of recognizing the difference between RGB pigments, without any restrictions.

[0061] 13 and 14 are diagrams showing an example of an optical sensor and a coupling member according to another embodiment of the present invention. Fig. 13 shows an optical sensor 1210 just before being coupled to a coupling member 1290 formed on a second cover member 1220. Meanwhile, Fig. 14 shows an optical sensor 1210 coupled to a coupling member 1290 formed on a second cover member 1220. In this case, the optical sensor 1210 may sense a color change in the color changing member 1260 through the coupling member 1290 made of a transparent material, the second cover member 1220 made of a transparent material, and a window 1230 formed in a groove in the first cover member 1240.

[0062] According to an embodiment, coupling member 1290 may be realized without including any other transparent material by including an open end in the direction in which optical sensor 1210 and color changing member 1260 face each other.

[0063] 15 is a diagram showing an example of a color change of a color changing member in another embodiment of the present invention. FIG. 15 shows the color change of a color changing member 1260, which can be identified from the outside by at least one groove included in a first cover member 1240 and a window 1230. An optical sensor 1210 may detect such a color change (or modification) of the color changing member 1260. In this case, the optical sensor 1210 may be realized to output light and sound and / or to transmit a warning signal to an external device via wireless communication.

[0064] The above-described systems or devices may be realized using hardware components or a combination of hardware and software components. For example, the devices and components described in the embodiments may be realized using one or more general-purpose or special-purpose computers, such as a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a programmable logic unit (PLU), a microprocessor, or various devices capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the OS. The processing device may also access, record, manipulate, process, and generate data in response to the execution of the software. For ease of understanding, a single processing device may be described. However, those skilled in the art will understand that a processing device may include multiple processing elements and / or multiple types of processing elements. For example, a processing device may include multiple processors or one processor and one controller. Other processing configurations, such as parallel processors, are also possible.

[0065] Software may include computer programs, codes, instructions, or a combination of one or more of these, which may configure a processing device to operate as desired or may independently or collectively instruct the processing device. The software and / or data may be embodied in any type of machine, component, physical device, virtual device, computer storage medium, or device to be interpreted by the processing device or to provide instructions or data to the processing device. The software may be distributed and stored and executed in a distributed manner on computer systems connected by a network. The software and data may be stored on one or more computer-readable storage media.

[0066] Methods according to embodiments may be implemented in the form of program instructions executable by various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The medium may continuously record a computer-executable program or temporarily record it for execution or download. The medium may also be various recording or storage means, including a single or multiple hardware devices, and may be directly connected to a computer system or distributed over a network. Examples of media include magnetic media such as hard disks, floppy disks, and magnetic tapes; optical media such as CD-ROMs and DVDs; magneto-optical media such as floptical disks; and media configured to record program instructions, such as ROMs, RAMs, and flash memories. Other examples of media include recording media or storage media managed by app stores that distribute applications, or by websites or servers that provide or distribute various software. Examples of program instructions include not only machine language code, such as that generated by a compiler, but also high-level language code executed by a computer using an interpreter or the like.

[0067] Although the embodiments have been described above based on limited examples and drawings, those skilled in the art will appreciate that various modifications and variations may be made from the above description. For example, the described techniques may be performed in an order different from that described, and / or the described system, structure, device, circuit, or other element may be coupled or combined in a manner different from that described, or may be substituted or replaced by other elements or equivalents, and still achieve suitable results.

[0068] Therefore, different embodiments are within the scope of the appended claims, provided that they are equivalent to the claims.

Claims

1. a clamp member attached to a pipe connection; a color-changing member configured to surround at least a portion of an outer peripheral surface of the clamp member, the color of which changes depending on gas or chemical substance leaked from the connection portion of the piping; a first cover member configured to surround the clamp member and including at least one first groove for visually confirming the color-changing member from the outside; a second cover member configured to surround the first cover member and including a transparent material; at least one gas detection sensor disposed through a second groove further formed in the first cover member, for detecting gas leaked from the connection portion of the pipe into a first space between the clamp member and the first cover member; and A drain for removing gas leaking into the space between the clamp member and the first cover member. Including, the drain is connected to a second space between the clamp member and the first cover member from the outside of the leakage detection device through a third groove further formed in the first cover member and a fourth groove formed in the second cover member, thereby connecting the second space with an external space of the leakage detection device; a drain cover configured to surround one side of the drain and to be at least partially inserted into the second cover member through the fourth groove formed in the second cover member in order to prevent gas leakage through the drain; Further comprising: The color-changing member is an upper color changing member disposed along at least a portion of an upper outer circumferential curved surface of the clamping member; and a lower color-changing member disposed along at least a portion of the lower outer circumferential curved surface of the clamping member; Including, The at least one first groove included in the first cover member is a first groove for visually confirming the upper color-changing member; and A first and second groove for visually inspecting the lower color-changing member A leak detection device comprising:

2. an optical sensor that senses a color change of the color-changing member by means of the at least one groove; The leak detection device of claim 1 further comprising:

3. 3. The leak detection device of claim 2, wherein the second cover member further includes a coupling member for coupling the optical sensor to a position corresponding to the at least one first groove included in the first cover member so that the optical sensor can detect a color change of the color changing member.

4. 4. The leak detection device according to claim 3, wherein the coupling member includes a transparent material so that the optical sensor can detect the color change of the color change member.

5. The clamp member is an upper clamp member covering an upper side of the piping; and a lower clamp member for covering the lower side of the piping; 2. The leak detection device of claim 1, comprising:

6. The first cover member is an upper first cover member configured to surround the upper clamp member; and a lower first cover member configured to surround the lower clamp member; 6. The leak detection device of claim 5, comprising:

7. The second cover member is an upper second cover member configured to surround the upper first cover member; and a second lower cover member configured to surround the first lower cover member; 7. The leak detection device of claim 6, comprising:

8. The leakage detection device is a fluororubber member that covers a gap between the upper second cover member and the lower second cover member and a gap between the second cover member and the piping. The leak detection device of claim 7 further comprising:

9. a locking device for connecting the upper second cover member and the lower second cover member to prevent any separation between the upper second cover member and the lower second cover member; The leak detection device of claim 7 further comprising:

10. The leak detection device according to claim 1 , wherein the first cover member is made of austenitic stainless steel.

11. The leak detection device according to claim 1, wherein the second cover member is made of polycarbonate or polyphenylene sulfide.

12. The color-changing member is It consists of a nanofiber membrane coated with a color-changing dye. the upper color changing member is configured to surround at least a portion of the upper outer circumferential surface of the clamping member along the upper outer circumferential curved surface of the clamping member; The leak detection device according to claim 1 , wherein the lower color-changing member is configured to surround at least a portion of the lower outer periphery of the clamping member along the curved lower outer periphery of the clamping member.

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