KR101848020B1 - Protective cover for preventing looseness of pipe fitting and detecting leakage - Google Patents

Abstract

The present invention relates to a protective cover for piping fitting which can easily determine the leakage state of a fluid in a piping fitting by a vision inspection part. In order to prevent loosening of a piping fitting, a piping fitting is fastened to a casing The present invention relates to a protective cover composed of a member.
In particular, the present invention relates to a color image forming apparatus for photographing a color of a discoloration paper that is discolored by contact with a leakage fluid on the outer circumferential surface of a casing and a color of a standard color paper colored in the same color as the original color of the discoloration paper, The leakage state of the fluid can be easily determined through the control unit of the controller.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a protective cover for leak-

The present invention relates to a protective cover for piping fittings, particularly a protective cover for piping fittings capable of detecting leakage.

Piping is to be applied in a variety of industries, and piping must be extended as needed. That is, a pipe of a certain length is connected to one pipe and the other pipe through a connecting member called a fitting. The fitting used for connection of the pipe is exposed to the vibration for a long time due to the fluid flowing along the pipe, and the binding of the fitting is inevitably weakened.

Patent Document 1 of the related art discloses a pipe fitting fixing member capable of maintaining the fastening of a fitting, and comprises a fixing portion having at least one elongated hole and respective mounting portions at both ends of the fixing portion.

The two mounting parts are mounted on the one side piping and the other side piping which are connected to the penetration part by the fitting. The latching part formed on the bottom part of this penetration part is designed to support the piping. However, the pipe fitting fixing member according to the related art is not easy to detect the leakage of the fluid exposed to the outside of the pipe.

Patent Document 2 proposes a piping cover assembly capable of visually confirming leakage of a fluid in a fitting portion corresponding to a piping connection portion in a piping through which a fluid composed of liquid or gas flows.

Patent Document 2 is a tubular shape that roughly encloses a fitting of a pipe, so that it is possible to visually confirm the fluid flowing out of the fitting opening, and to provide a space portion capable of temporarily accommodating the discharged fluid. However, according to the conventional cover assembly for piping, when the gaseous fluid leaks out of the piping to the inside of the piping, leakage into the assembly is not easily detected.

As described above, Patent Document 1 focuses on maintaining the fitting of pipes, while Patent Document 2 discloses a structure that can be visually confirmed easily by changing the color of the identification mark by the fluid flowing out from the connecting portion of the pipe Lt; / RTI > However, it is impossible for the operator to visually confirm the protective cover for the loosening and / or leakage detection disposed around each piping fitting, and the inspection for the protective cover mounted on the dead zone can not be performed properly It is a reality.

Korean Patent No. 10-1271984 Korean Patent Publication No. 10-2010-0120449

The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a color image forming apparatus and a color image forming method, And to improve the inspection efficiency of leakage.

Further, the present invention may also prevent fitting loosening between pipes.

In order to achieve the above object, according to a first embodiment of the present invention,

A female screw thread portion which is provided at one end of the cylinder member and forms a first insertion groove for supporting and retaining the one pipe, a female screw thread portion which is disposed at the other end of the cylinder member, A casing having a finishing member for forming a second insertion groove for holding and holding, and a seating portion recessed along the periphery of the circulation member;

A leakage detecting portion disposed on the seat portion of the casing so as to be spaced apart from the color changing paper that is discolored through contact with the fluid leaking from the piping fitting and the standard color paper colored in the same color as the original color of the color changing paper;

A fastening member having a male thread portion and a third insertion groove formed along the longitudinal direction at one end of the female screw thread portion to be fastened to the female thread portion of the casing; And

And a vision inspection unit for comparing the discoloration area of the leakage detection unit with the color image obtained by the image pickup unit to determine whether leakage has occurred,

Here, the seat portion has a through hole in the inner region in fluid communication between the inner space of the circulation member and the seat portion, and the through hole can guide the fluid leaking from the pipe fitting accommodated in the inner space to the discoloration spots. The present invention can read a color comparison between the discoloring paper to be discolored by the contact with the leakage fluid and the standard color paper through the vision inspection unit.

In particular, the leakage sensing unit includes: a first receiving groove for providing a receiving space of a standard color paper on one side; A second receiving groove which is not in fluid communication with the first receiving groove and provides a receiving space for the color changing sheet on the other side; A guide path for assisting fluid communication between the through-hole and the second receiving groove; A fastening protrusion provided at both ends to facilitate fitting in the seating part; And at least one concave portion formed on the inner circumferential surface.

The seating portion may form one or more convex portions to be inserted into the concave portion of the leakage sensing portion.

The cylinder member includes two stoppers spaced apart from each other at a predetermined interval on the outer circumferential surface thereof, and the seat portion can be disposed between the stoppers.

The leak detector can be made of a transparent material for easy color comparison between discoloration and standard color.

In particular, the present invention provides a vision inspection unit for color comparison between a changing paper and a standard color paper, wherein the vision inspection unit includes: a light source unit for irradiating light onto a surface of the leakage sensing unit; An image pickup unit disposed on the leakage detection unit and configured to capture an image of a color change sheet and a standard color sheet of the leakage detection unit; And a controller for reading the color image of the color change paper and the color image of the standard color paper photographed by the image pickup unit to determine whether or not the color image is leaked.

The vision inspection unit may further include a wireless communication module.

According to a second embodiment of the present invention, there is provided a protective cover for pipeline fitting,

A female screw thread portion which is provided at one end of the cylinder member and forms a first insertion groove for supporting and retaining the one pipe, a female screw thread portion which is disposed at the other end of the cylinder member, A casing having a finishing member for forming a second insertion groove for holding and holding, and a seating portion recessed along the periphery of the circulation member;

A leakage detection unit disposed on a seating portion of the casing;

A discoloring paper interposed between the leakage detecting portion and the seat portion and discolored through contact with a fluid leaked from the piping fitting;

A standard color indicator portion which receives a standard color paper colored in the same color as the original color of the discoloring paper and is fit on the outer circumferential surface of the casing member;

A fastening member having a male thread portion and a third insertion groove formed along the longitudinal direction at one end of the female screw thread portion to be fastened to the female thread portion of the casing; And

And a vision inspection unit for comparing the discolored area of the leakage detection unit with a standard color image of the standard color index unit to compare the color image obtained with the image pickup unit,

Here, the seat portion has a through hole in the inner region in fluid communication with the inner space of the turner member and the seat portion, and the through hole guides the fluid leaking from the pipe fitting received in the inner space into contact with the discoloring paper. The present invention can read a color comparison between the discoloring paper to be discolored by the contact with the leakage fluid and the standard color paper through the vision inspection unit.

The seat portion may have two engagement grooves spaced apart from each other at a predetermined interval in the inner region. The leakage sensing portion may include two engagement projections protruding from the inner surface at a predetermined interval.

The standard color indicator section may have a first receiving groove on its side surface to provide a receiving space for standard color paper.

The cylinder member can form a concave portion having a shape and size corresponding to the standard color indicator portion around the outer circumferential surface.

The leak detector and the standard color indicator can be made of a transparent material for easy color comparison between discoloration and standard color paper.

In particular, the vision inspection unit includes a light source unit for irradiating light onto the surface of the leakage detection unit; An image pickup unit disposed on the leakage detection unit and configured to capture an image of a color change sheet and a standard color sheet of the leakage detection unit; And a controller for reading the color image of the color change paper and the color image of the standard color paper photographed by the image pickup unit to determine whether or not the color image is leaked.

The vision inspection unit may further include a wireless communication module.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

As described above, according to the present invention, it is possible to arrange a color changing paper adjacent to a fitting hole of a pipe, and to check whether the color changing paper leaks through color change of the color changing paper through contact with the leakage fluid.

The present invention is capable of real-time checking of the discoloration of the discoloration paper by comparing the color between the standard color paper having the color before the discoloration and the discoloration paper contacting the leakage fluid by arranging the discoloration paper and the standard color paper adjacent to each other.

That is, the present invention can accurately acquire the detection of each color of the discoloration paper and the standard color paper, and automates the process of transmitting information obtained by comparing and discriminating the two color images to the operator. Therefore, the operator does not have to check the leakage of the fluid for each fitting portion necessary for extending the piping, so that the work flow can be remarkably reduced, and the inspection for the protective cover arranged in the dead zone, which is difficult to visually check, can be performed effectively There will be.

The present invention is designed in a detachable structure of discoloration paper and / or standard color paper to assist in the replacement of discoloration paper and / or standard color paper in consideration of the discoloration of the discoloration paper or the characteristics of the fluid flowing into the pipe.

The present invention provides a protective cover for preventing loosening of a fluid flowing between pipes that are extended to prevent loosening of a fitting port by continuously pressing a fitting port for assisting mutual connection of pipes.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a protective cover for piping fitting for leakage detection according to a first embodiment of the present invention; FIG.
FIG. 2 is a view showing the use of the unlocking portion of the protective cover for piping fitting shown in FIG. 1. FIG.
3 is an exploded perspective view of the piping fitting and the unblocking portion shown in Fig.
4 (a) and 4 (b) are schematic views illustrating a protective cover to be mounted around a pipe fitting with a leakage sensing unit mounted thereon. FIG. 4 (a) In which the casing of the release preventing portion shown in Fig.
FIG. 5 (a) is a perspective view of the leakage sensing unit viewed from the right, and FIG. 5 (b) is a perspective view of the leakage sensing unit shown in FIG.
6 is a cross-sectional view taken along the line AA in Fig. 4 (a).
FIG. 7 is a schematic view showing a protective cover for piping fitting for leakage detection according to a second embodiment of the present invention.
8 (a) and 8 (b) are schematic views illustrating a release preventing unit having a leakage detecting unit according to a second embodiment of the present invention. FIG. 8 (a) is a perspective view of the release preventing unit viewed from above, Fig. 6 is a plan view of the release preventing portion shown in Fig.
9 is an exploded perspective view of the release preventing portion shown in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Now, a protective cover for leak-sensing piping fitting according to the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages, features, and ways of accomplishing the same will become apparent from the following description of embodiments taken in conjunction with the accompanying drawings. In the specification, the same reference numerals denote the same or similar components throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a protective cover for piping fitting for leakage detection according to a first embodiment of the present invention; FIG.

The protective cover 1 for piping fitting according to a preferred embodiment of the present invention includes a casing 1100 for accommodating a piping fitting and a leakage detecting portion (not shown) disposed around the outer circumferential surface of the casing 1100, 1200, a fastening member 1300 for fixing the position of the casing 1100 disposed around the piping fitting, and an image obtained by the standard coloring paper with the discoloring paper of the leakage detecting unit 1200 to determine the leakage And a vision inspection unit 1400 that can be used.

The protective cover 1 for fitting the piping according to the present invention includes a color changing paper 20 disposed so as to be able to contact with a leakage fluid in the leakage detecting unit 1200 and a standard color paper 50, Respectively. For reference, the standard color paper 50 may be formed of a material capable of maintaining a constant color (for example, the original primary color of the color changing paper) regardless of whether the color paper 50 is in contact with the leakage fluid.

In addition, according to the present invention, the color of the standard color paper 50 and the color change paper 20 can be confirmed from the outside by making the leakage detection unit 1200 made of a transparent material, and the presence or absence of discoloration of the color change paper 20 can be confirmed in real time To be able to take immediate follow-up measures.

The protective cover 1 for pipe fitting according to the first embodiment of the present invention includes a vision inspection unit (hereinafter referred to as a vision inspection unit) that can detect leakage around a pipe fitting using an image obtained by capturing a color image of the leakage detection unit 1200 1400).

The vision inspection unit 1400 includes a light source 1410, an image sensing unit 1420, a controller 1430, and a wireless communication module 1440.

The light source part 1410 is a constituent member for irradiating inspection light onto the surface of the leakage sensing part 1200, which is an object to be inspected, and may be constituted by an LED element. The light source unit 1410 is capable of acquiring a high quality image that can easily grasp the color of the color change paper 20 and the standard color paper 50 without being distorted due to the shadow of the foreign substance by irradiating the leakage detection unit 1200 with bright illumination light. .

The image sensing unit 1420 is a component that receives the light emitted from the surface of the leakage sensing unit 1200 and captures an image of the surface of the leakage sensing unit 1200. More specifically, the image sensing unit 1420 is disposed on the upper portion of the leakage sensing unit 1200 so that each color image of the inspection target, for example, the color changing paper 20 and the standard color paper 50 of the leakage sensing unit 1200 . Although only one imaging unit 1420 is illustrated in the vision inspection unit 1400 in Fig. 1, it may be composed of a first imaging unit for imaging the color change paper 20 and a second imaging unit for imaging the standard color paper 50. [

The vision inspection unit 1400 of the present invention includes a control unit 1430 connected to the light source unit 1410 and the image sensing unit 1420 to control the vision inspection unit 1400 as a whole. In addition, the control unit 1430 can read the image acquired from the image pickup unit 1420 and check whether or not the image is leaked.

The control unit 1430 converts the image obtained by the image sensing unit 1420 into digital data and determines a color difference between the color change paper 20 and the standard color paper 50 using the converted data. The control unit 1430 can implement a DSP (Digital Signal Processing) chip. The control unit 1430 can use the DSP chip as a means to correct noise of an image and determine whether leakage (leakage) is caused by histogram processing or the like. That is, the control unit 1430 reads the color difference between the color image of the color change paper 20 and the color image of the standard color paper 50 obtained by the image pickup unit 1420 with the DSP chip. It is determined that leakage of the fluid around the piping fitting is not prevented when the colors of the color paper 50 match. Alternatively, if there is a discrepancy in color between the discoloration paper 20 and the standard color paper 50, the leakage of the fluid around the piping fitting may be suspected.

For reference, the discoloration paper 20 may be made of a water-soluble ink label paper, such as a litmus paper or a pH paper, which reacts with a gas or a liquid. When the acidic solution is discharged, it changes to red. . In this way, even if the discharge amount is small, when the chemical substance flows out from the pipe rupture of the pipe, the connection port of the pipe, or the pipe fitting, the leakage detection unit 1200 can easily detect the flow- .

The standard color paper 50 should be colored in the same color as the original color before the color change paper 20 is discolored. The leakage sensing unit 1200 induces the color change of the color changing paper 20 through the contact with the fluid and changes the color information of the standard color paper 50, which maintains the original color of the color changing paper, The color information of the color change paper 20 is converted into a digital signal, and the controller 1430 determines whether or not the color information is leaked, and transmits the color information to the main computer C for display. Of course, since the leakage detector 1200 is made of a transparent material, the color difference can be discriminated even from the outside by the naked eye.

The vision inspection unit 1400 transmits the leakage information read by the control unit 1430 to the wireless communication module 1440 in real time. The wireless communication module 1440 may be a module employing a short-range wireless communication method such as Zigbee, Bluetooth, Radio Frequency Identification (RFID), or WiFi, . ≪ / RTI > The wireless communication module 1440 converts the information of the controller 1430 and wirelessly transmits the information to the main computer C to the outside.

As is known to those skilled in the art, the piping for guiding the flow of the fluid must have a plurality of piping fittings, and each protective cover 1 must be mounted for each of a plurality of piping fittings. The present invention is capable of collecting information on the leakage of each protective cover 1 to the main computer C by the wireless communication module 1440 of the vision inspection unit 1400 mounted for each protective cover 1 do. This allows the operator to save time and time for visually identifying the color of the leakage detection unit 1200 mounted on all the protective covers 1 and to check the leakage state for each pipe fitting Lt; / RTI >

As described above, the protective cover 1 for pipe fitting according to the first embodiment of the present invention includes a casing 1100 disposed around a pipe fitting and a fastening member 1300 for assisting in fixing the position of the casing 1100 A leakage detection unit 1200 disposed on the outer circumferential surface of the unlocking unit, and a vision inspection unit 1200 for photographing the color change paper and the standard color paper of the leakage detection unit 1200, The release preventing unit 1400 will be described in more detail with reference to FIG. 2 to FIG. 6. FIG.

The unlocking portion is a term collectively referred to as a casing 11000 and a fastening member 1300 for assisting mounting of the protective cover 1 around the pipe fitting and may include the leakage detecting portion 1200 as necessary. The drawings and explanations of the vision inspection unit 1300 are omitted to facilitate a clear understanding of the unlocking unit.

2 to 6, the protective cover 1 for piping fitting according to the first embodiment of the present invention includes a casing 1100 for accommodating a piping fitting, and a pipe fitting accommodated in the casing 1100 And a leakage detection unit 1200 for indicating a leakage state of the fluid on the outer circumferential surface of the casing 1100 is disposed along with a release preventing unit composed of a fastening member 1300 for assisting fastening. The casing 1100 and the fastening member 1300 can be mutually screwed together by a screw fastening method.

The casing 1100 includes an annular member 1110 having an opening 1150 formed in the longitudinal direction and around the outer circumferential surface of the casing 1100 and an inner space 1111 and a seating portion 1150 of the annular member 1110 A through hole 1120 for fluid communication, a female screw thread 1130 covering one end of the cylinder member 1110, and a closing member 1140 covering the other end of the cylinder member 1110.

As shown in the drawing, the cylinder member 1110 is composed of a cylinder-shaped body having one end portion and the other end portion, and a concave internal space 1111 along the longitudinal direction. Although the semicylinder member 1110 shown in Fig. 4 (b) is shown as a semicylindrical shape, it is noticed that the semicylindrical member 1110 can be formed into various three-dimensional structures such as a box shape or the like. The stopper member 1110 includes two stoppers 1161 and 1162 spaced at predetermined intervals in the longitudinal direction along the circumference of the circumferential surface thereof. The first stopper 1161 protrudes in a radial direction at one side edge of the seating part 1150 while the second stopper 1162 protrudes in a radial direction at the other side edge of the seating part 1150. [

The female screw portion 1130 is disposed at one end of the cylinder member 1110 as described above, and assists in fastening the screw member to the fastening member 1300. Of course, the female thread portion 1130 forms a female thread on the inner circumferential surface. Preferably, the female thread portion 1130 forms a first insertion groove 1131. The first insertion groove 1131 is formed toward the center portion from the outer peripheral surface of the female screw thread portion 1130. The first insertion groove 1131 is used as a path for guiding the one pipe P1 to the inside of the female screw thread 1130. [ The first insertion groove 1131 is formed to have the same size as or larger than the outer diameter of the one side pipe P1 and can provide a smooth insertion of the one side pipe P1.

The closing member 1140 is disposed at the other end of the cylinder member 1110 so as to face the female screw thread portion 1130 and assists in seating the other pipe P2. The closing member 1140 is a U-shaped component member having a second insertion groove 1141. [ As described above, the closing member 1140 provides a concave path that can be guided through the second insertion groove 1141 into the inside thereof so as to support and retain the other pipe P2. The second insertion groove 1141 may be formed to have the same size as or larger than the outer diameter of the other pipe, thereby providing smooth insertion of the other pipe P2.

The casing 1100 forms an internal space 1111 defined by the cylinder member 1110 and the female screw part 1130 and the U-shaped closing member 1140 as described above. The inner space 1111 can accommodate one pipe P1, the other pipe P2, and a pipe fitting (not shown) coupling them.

In particular, the protective cover 1 according to the first embodiment of the present invention has a structure in which the first nut (N1) of one pipe (P1) and the second nut (N2) of the other pipe (P2) The leakage sensing unit 1200 can be detachably attached to the outer peripheral surface of the circulation member 1110 so as to detect leakage. To this end, the circular member 1110 may include a seating portion 1150 that can receive the leakage sensing portion 1200 around an outer circumferential surface adjacent to the closing member 1140 as shown, The seat portion may be formed on another portion of the outer circumferential surface of the member 1110. [ The placement portion 1150 is disposed adjacent to the closure member 1140 so that the interference with the fastening member 1300 can be minimized by eliminating the possibility of contact with the fastening member 1300. [

The seat portion 1150 is recessed at a predetermined depth from the outer circumferential surface of the cylinder member so as to allow easy fitting of the leakage sensing portion 1200. Even if the leakage sensing portion is mounted on the seat portion, It is possible not only to prevent the bent portion from being formed on the outer circumferential surface of the leakage sensing portion 1200 but also to ensure reliable positioning and engagement of the leakage sensing portion 1200.

The seating portion 1150 has one or more convex portions 1152 disposed along the periphery of the inner region thereof.

The through hole 1120 is formed in the inner space 1111 of the cylinder member 1110 so as to be in fluid communication with the seating portion 1150 so that the fluid leaked around the pipe fitting can be separated from a portion of the leakage sensing portion 1200 Contact may be allowed. Of course, the through-hole 1120 is formed in the inner region of the seating portion 1150 as shown.

The protective cover 1 according to the present invention has piping fittings disposed in the internal space 1111 of the casing 1100 and extends through both ends of the casing 1100 to extend one pipe P1 and the other pipe P2 . Specifically, the casing 1100 accommodates the piping fitting in the inner space 1111 through the open face of the circulation member 1110, and the one-side piping P1 is inserted into the first insertion groove 1131 of the female thread portion 1130, And the other pipe P2 is seated in the second insertion groove 1141 of the closing member 1140. [

The pipe fitting is formed by connecting a first nut (N1) provided at an end of one pipe (P1) and a second nut (P2) provided at an end of the other pipe (P2) And the other end of the other pipe (P2) in fluid communication with each other. Alternatively, the present invention may comprise a first nut and a second nut, if desired.

A leakage of the fluid flowing along the length of the pipe can be prevented through the gasket (or the O-ring) at the connection portion between the first nut N1 and the second nut N2.

The leakage detection unit 1200 is formed in a U shape having a size and shape that can be accommodated in the seating portion 1150 as a whole. Specifically, the leakage sensing unit 1200 includes a first receiving groove 1210 on one side and a second receiving groove 1220 on the other side. The first receiving groove 1210 and the second receiving groove 1220 are not in fluid communication with each other.

The leakage sensing portion 1200 forms fastening protrusions 1240 individually at both ends. The fastening protrusions 1240 may be fixed to both side edges of the seating portion 1150 and may be fixed by fitting the leakage sensing portion 1200 on the seating portion 1150 of the circulation member 1110.

Also, the leakage sensing unit 1200 forms one or more recesses 1250 around the inner area of the inner peripheral surface. The concave portion 1250 assists in positioning the leakage sensing portion 1200 when the leakage sensing portion 1200 is covered on the seating portion 1150. The convex portion 1152 of the seating portion 1150 is matched with the concave portion 1250 of the leakage sensing portion 1200 to form the leakage sensing portion 1200. In the case where the leakage sensing portion 1200 is mounted on the seating portion 1150, 1200 and prevent the flow of the leakage sensing unit 1200 on the seat part 1150. [ Particularly, the concave portion 1250 of the leakage sensing portion 1200 and the convex portion 1152 of the seating portion 1150 are engaged with each other. This allows the leakage fluid, which has flowed into the through hole 1120, And the flow of the liquid to the first receiving groove 1210 is blocked at one side of the leakage sensing portion 1200 while assisting flow to the second receiving groove 1220 at the other side.

A guide path 1230 is provided on the inner circumferential surface of the leakage sensing part 1200 at a position corresponding to the through hole 1120 of the cylinder member 1110. The guide path 1230 includes a through hole 1120, The fluid that leaks around the fitting can be introduced into the second receiving groove 1220 through the through hole 1120 and the guide path 1230 by a member for facilitating the fluid communication of the second receiving groove 1220. [ Help. The second receiving groove 1220 accommodates sheet-shaped color changing paper 20 therein.

The leakage sensing unit 1200 receives a sheet-like standard color paper 50 in the first receiving groove 1210 formed on one side as described above. The standard color paper 50 may be a sheet colored in the same color as the original primary color before the discoloration paper 20 is discolored or a discolored paper. The leakage sensing portion 1200 forms the first receiving groove 1210 in a T shape so that the operator can insert and / or remove the standard color paper 50 into the first receiving groove 1210.

The leakage detecting unit 1200 induces a color change of the color changing paper 20 through the contact with the fluid, while the color of the standard color paper 50, which maintains the original color of the color changing paper, The color of the discoloration paper 20 can be compared to check the leakage of the fluid from the outside to the naked eye. At the same time, the color of the discoloration paper and the color of the standard color paper can be photographed through the imaging unit 1420 shown in FIG. .

If the operator does not have the standard color paper 50 painted with the initial color of the color changing paper, the operator may not recognize the color of the color changing paper before coming into contact with the leakage fluid, so that the operator may be unable to confirm whether the color changing paper is discolored or not. That is, the standard color paper 50 serves as a color comparison index with the color change paper 20. The operator and / or the controller can check the leakage of the fluid through color comparison between the standard color paper 50 and the color change paper 20 arranged side by side.

The leakage detection unit 1200 is mounted in a space surrounded by the seating portion 1150 of the circulation member 1110 and the first stopper 1161 and the second stopper 1162. The leakage detection unit 1200 includes a seating portion 1150 And one side of the leakage sensing portion 1200 forming the first receiving groove 1210 is placed so as to be able to be in contact with the first stopper 1161 and the leakage that forms the second receiving groove 1220 And the other side of the sensing unit 1200 is arranged to be interviewed with the second stopper 1162. [

The first stopper 1161 can prevent the separation of the standard color paper 50 from the inside of the first receiving groove 1210 and prevent the contact with the leakage fluid. In addition, the second stopper 1162 can prevent the discoloration paper 20 from escaping from the inside of the second receiving groove 1220 and prevent the leakage of the leakage fluid to the outside.

The present invention has a fastening member (1300) coupled to the casing (1100). The fastening member 1300 is formed in a bolt shape and includes a male screw thread portion 1320 having a predetermined length and diameter and screwed to the female screw thread portion 1130, And a head portion 1310 formed at one end. Preferably, the fastening member 1300 forms a third insertion groove 1330 extending along its longitudinal direction, and the third insertion groove 1330 includes a head portion 1310 and a male hub portion 1330 1320 so that the one side pipe P1 can be seated in the third insertion groove 1330 of the fastening member 1300. [ The third insertion groove 1330 is formed to have the same size as or larger than the outer diameter of the one-side pipe, thereby providing smooth insertion of the one-side pipe.

The protective cover 1 for piping fitting according to the present invention is configured such that the opening of the first insertion groove 1131 and the opening of the second insertion groove 1141 and the openings of the inner space 1111 of the cylinder member 1110 are arranged in the same direction So that one side pipe P1 and the other side pipe P2 joined to the fitting opening can be easily seated in the inner space 111 of the casing 100.

The first insertion groove 1131 and the second insertion groove 1141 and the third insertion groove 1330 are formed concentrically so as to ensure alignment of the one pipe P1 and the other pipe P2. So that one pipe and the other pipe in the fitted state can be arranged in a line.

The present invention is characterized in that after assembly to prevent unexpected disconnection of the piping fittings in the protective cover 1 which assists in the extension of the length of the piping and prevents untightening of the piping fittings as described above, (1330) and the first and second insertion grooves (1131, 1141).

The assembling method of the piping fitting according to the present invention and the protective cover for preventing loosening is as follows.

The present invention is characterized in that the male screw portion 1320 of the fastening member 1300 is fastened to the female screw thread portion 1130 of the casing 1100 so as to form the unlocking portion of the protective cover. The casing 1100 and the fastening member 1300 are fastened in advance to facilitate insertion of the piping fitting into the internal space of the casing 1100. [ Of course, the protective cover 1 of the present invention has a structure in which the opening of the first insertion groove 1131 and the opening of the second insertion groove 1141 are formed so as to facilitate insertion of the piping fitting into the inner space 1111 of the casing 1100. [ The inner space opening surface of the cylinder member 1110 and the third insertion groove 1330 of the fastening member 1300 are oriented in the same direction so that one pipe P1 and the other pipe P2, And can be easily seated in the inner space 1111 of the casing 1100.

The fastening member 1300 is urged toward the end of the one side pipe P1 toward the female thread portion 1130 and is fastened by a crimping jig such as a spanner so as to press the female thread portion 1130 ).

The end of the male screw thread 1320 of the fastening member 1300 comes into contact with the first nut N1 and can be pressed while the fastening member 1300 is tightened. This prevents unnecessary rotation of the first nut (N1) and / or the second nut (N2), thereby preventing the first nut (N1) and the second nut (N2) from being loosened. Further, the end of the male screw thread portion 1320 pushes only the upper surface of the first nut N1, so that the circumferential surface of the first nut is not damaged, so that it is easy to loosen and tighten the nut when replacing and / . The third insertion groove 1330 of the fastening member 1300 is inserted into the inner space 1111 of the casing 1100 so that the pipe fitting can be surely received in the inner space without being separated from the inner space 1111 of the casing 1100 And is arranged so as to be shifted from the opening face of the circulation member (1110).

The inner circumferential surface of the cylinder member 1110 is formed in the same shape as the outer shape of the pipe fitting, for example, the second nut N2 or the first nut N1, in order to minimize unnecessary flow of the pipe fitting in the casing 1100 desirable. The projecting edges of the nuts N1 and N2 are surely seated on the inner circumferential surface of the circular member 1110 so that the pipe fittings including the nuts N1 and N2 are not rotated.

The operator and / or the operator can visually confirm whether or not the leak has occurred through the discoloration paper 20 in contact with the leakage fluid and discolored in a color different from the standard color paper 50, The color images of the standard color paper can be read by the control unit 1430 as a means of color comparison to judge whether leakage is occurring (see FIG. 1).

The operator and / or operator can quickly repair and replace leaked pipe fittings through discolored discoloration papers to maintain the efficiency of the entire process and, if the fluid is a hazardous chemical, minimize personal injury and environmental contamination .

FIGS. 7 to 9 are schematic views of a protective cover for piping fitting with a leakage sensing unit according to a second embodiment of the present invention. The protective cover 2 according to the second embodiment of the present invention is a modification of the protective cover 1 shown in Figs. 1 to 6, and has a very similar structure except for the configuration of the leakage sensing part and the seat part The description of similar or identical components will be omitted herein to assist in a clear understanding of the present invention.

The protective cover 2 for piping fitting according to the second embodiment of the present invention includes a casing 2100 for accommodating piping fittings and a leakage detection unit 2100 disposed around the outer circumferential surface of the casing 2100, A standard color indicator portion 2500 of a U shape around the outer circumferential surface of the casing 2100, a coupling member 2300 for fixing a pipe fitting accommodated in the casing 2100, and a leakage detection portion 2200 And a vision inspection unit 2400 for picking up and color-comparing the standard color indicator unit 2500. The vision inspection unit 2400 includes a light source 2410, an image sensing unit 2420, a control unit 2430, and a wireless communication module 2440 as described above. It is preferable that the image sensing unit 2420 is disposed on the standard color indicator unit 2500 at a predetermined distance from the leakage sensing unit 2200. The vision inspection unit 2400 may include a casing 2100 and a single component Or may be integrally formed through assembly, adhesion, or the like.

The casing 2100 includes a cylinder member 2110 having a seating portion 2150 formed around an outer circumferential surface thereof, a female screw thread portion 2130 covering one side end of the cylinder member 2110, And a covering member 2140 for covering.

The female screw thread portion 2130 is disposed at one side end of the cylinder member 2110 as described above, and assists in the screwing with the coupling member 2300 to be described later. Of course, the female thread portion 2130 forms a female thread on the inner circumferential surface. Preferably, the female thread portion 2130 forms a first insertion groove 2131. The first insertion groove 2131 is used as a path for guiding the one pipe P1 to the inside of the female screw thread portion 2130.

The closing member 2140 is disposed at the other end of the cylinder member 2110 so as to oppose the female thread portion 2130 and assists the seat of the other pipe P2. The closing member 2140 is a U-shaped component member having a second insertion groove (not shown, a component corresponding to the second insertion groove 1141 in Fig. 2 (a)). As described above, the closing member 2140 provides a concave path that can be guided through the second insertion groove into the inside thereof so as to support and maintain the other pipe P2.

The seating portion 2150 is recessed to a predetermined depth so as to enable easy fitting of the leakage sensing portion 2200. Particularly, the seating portion 2150 includes two fastening grooves 2150 spaced apart from each other by a predetermined distance, A through hole 2120 is formed between the two engagement grooves 2124 and the two engagement grooves 2124. The through hole 2120 is drilled in fluid communication between the inner space 2111 of the circulating member 2110 and the mounting portion 2150 so that the fluid leaked around the pipe fitting is contacted with the leakage sensing portion 2200 Can be accepted. The stopper member 2110 has two stoppers 2161 and 2162 which are spaced apart from each other by a predetermined distance in the longitudinal direction. The first stopper 2161 protrudes radially from one side edge of the seating portion 2150 while the second stopper 2162 protrudes in the radial direction from the other side edge of the seating portion 2150. The first stopper 2161 can close the first receiving groove 2510 for helping the standard color paper 50 to flow in and out so that the standard color paper sheet 2500 is separated from the standard color paper sheet 2500, And also serves as a partition wall that does not allow access to the leakage fluid.

The leakage detecting portion 2200 is formed to be the same as or similar to the contour of the circulating member 2110, and two fastening protrusions 2240 are formed on the inner surface of the leakage detecting portion 2200 so as to be spaced apart from each other with a predetermined gap therebetween. The spacing distance between the two fastening protrusions 2240 is the same as the spacing distance between the two fastening recesses 2124. Preferably, the inner surface of the leakage sensing portion 2200 has a shape corresponding to the seating portion 2150 to enable the matching of the leakage sensing portion 2200 and the seating portion 2150.

The protective cover 200 according to the second embodiment of the present invention intervenes between the seating portion 2150 of the circulation member 2110 and the leakage sensing portion 2200, (20) may be formed in a sheet shape. The discoloration paper 20 may be made of a water-soluble ink labeling paper, for example, a litmus paper or a pH test paper, which is responsive to gas or liquid.

The second embodiment of the present invention is characterized in that a U-shaped standard color indicator portion 2500 is placed in the casing 2100 around the outer circumferential surface of the casing 2100 adjacent to the leakage sensing portion 2200 that is seated on the seating portion 2150 do. The standard color indicator portion 2500 has a first receiving groove 2510 on the side surface and accommodates a sheet-like standard color paper 50 in the first receiving groove 2510. The standard color paper 50 is colored in the same color as the original color before the discoloration paper 20 is discolored. The standard color indicator portion 2500 forms fastening protrusions 2540 individually at both ends. The clamping protrusions 2540 are fixed to both side edges of the circulating member 2110 and can be fixed by fitting a standard color indicator 2500 on the outer peripheral surface of the circulating member 2110. Optionally, the translucent member 2110 forms a recess 2160 around an outer circumference that does not overlap with the seating portion 2150, the recess 2160 defining the seating of the standard color indicator portion 2500 Help.

In the second embodiment of the present invention, the fluid leaking around the fitting passes through the through hole 2120 and comes into contact with the discoloration paper 20 to be discolored. The worker or the control part of the field compares the color of the discoloration paper 20 with the color of the standard color paper 50 and determines that the fluid is leaked when the color of the discoloration paper is different from the color of the standard color paper. Particularly, in the second embodiment of the present invention, the discoloration paper 20 and the standard color paper 50 are partitioned from the outer circumferential surface of the casing 2100, so that the contact between the standard color paper and the leakage fluid can be blocked. In addition, the second embodiment of the present invention can easily mount and detach the standard color indicator portion 2500 according to the operator's selection.

In addition, the protective cover 200 according to the second embodiment of the present invention may be constructed such that the leakage detecting portion 2200 and the standard color indicator portion 2500 are made of a transparent material, The color of the standard color paper 20 and the standard color paper 50 can be visually confirmed and the respective colors can be compared. Without being limited to this, the casing 2100 may also be made of a transparent material.

The second embodiment of the present invention has a fastening member 2300 coupled to the casing 2100. [ The fastening member 2300 is formed in a bolt shape and includes a male screw thread portion 2320 having a predetermined length and diameter and screwed to the female screw thread portion 2130, And a head portion 2310 formed thereon. Preferably, the fastening member 2300 forms a third insertion groove 2330 extending along the longitudinal direction thereof, and the third insertion groove 2330 includes a head portion 2310 and a male hub portion 2310 2320 so that the one side pipe P1 can be seated in the third insertion groove 2330 of the fastening member 2300. [

While the present invention has been described in detail with reference to the specific embodiments thereof, it is to be understood that the present invention is not limited to the above-described embodiments, It will be apparent that modifications and improvements can be made by those skilled in the art.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1, 2 ----- protective cover,
20 ----- discoloration,
50 ----- Standard color paper,
1100, 2100 ----- casing,
1200, 2200 ----- leakage detection unit,
1300, 2300 ----- fastening member,
1400, 2400 ----- vision inspection department,
2500 ----- Standard color indicator part,
N1, N2 ----- Nuts,
P1, P2 ----- piping.

Claims (14)

An elongated pipe P1 having an elongated first nut N1 at one end and an elongated second pipe P2 having a second nut N2 fastened to the first nut N1 of the one pipe P1, ) For preventing the pipe fitting from loosening, characterized in that the protective cover
A first insertion groove 1131 disposed at one end of the cylinder member 1110 and supporting and supporting the one side pipe P1, A closure member 1140 disposed at the other end of the cylinder member 1110 to form a second insertion groove 1141 for supporting and supporting the other pipe P2, A casing 1100 having a seating portion 1150 recessed along the periphery of the member 1110;
A color changing paper 20 which is discolored through contact with a fluid leaking from the piping fitting and a standard color paper 50 colored in the same color as the original color of the color changing paper 20 are arranged apart from each other, A leakage sensing portion 1200 disposed on the seating portion 1150 of the portable terminal;
A head portion 1310 and a third insertion groove 1330 formed along the longitudinal direction are formed at one end of the male screw thread portion 1320 and the male screw thread portion 1320 so as to be fastened to the female screw thread portion 1130 of the casing 1100 A fastening member (1300) provided; And
And a vision inspection unit 1400 for comparing the color image of the leakage detection unit 1200 with the color image obtained by the image pickup unit 1430 to determine whether the color image is leaked.
The seating portion 1150 has a through hole 1120 in the inner region in fluid communication between the inner space 1111 of the circulating member 1110 and the seating portion 1150, Guiding the fluid leaking from the pipe fitting accommodated in the inner space 1111 to the discoloration paper 20,
The leakage detection unit 1200 detects the leakage
A first receiving groove (1210) for providing a receiving space for the standard color paper (50) on one side;
A second receiving groove (1220) which is not in fluid communication with the first receiving groove (1210) and provides a receiving space for the color changing sheet (20) on the other side;
A guide path (1230) for facilitating fluid communication between the through hole (1120) and the second receiving groove (1220); And a protective cover for a leaky piping fitting.
The method according to claim 1,
The leakage detection unit 1200 detects the leakage
Fastening protrusions (1240) provided at both ends to facilitate fitting into the seating part (1150); And
And one or more concave portions (1250) formed on an inner circumferential surface thereof.
The method according to claim 1,
Wherein the seating part (1150) forms at least one convex part (1152) to be inserted into the concave part (1250) of the leakage sensing part (1200).
The method according to claim 1,
The cylinder member 1110 includes two stoppers 1161 and 1162 spaced apart from each other at a predetermined interval on the outer circumferential surface of the cylinder member 1110 so that the seat portion 1150 is formed between the stoppers 1161 and 1162 Features a protective cover for piping fittings.
The method according to claim 1,
Wherein the leakage sensing part (1200) is made of a transparent material.
The method according to claim 1,
The vision inspection unit 1400,
A light source 1410 for emitting light to the surface of the leakage detector 1200;
An image sensing unit 1420 disposed on the leakage sensing unit 1200 for sensing an image of the color changing paper 20 and the standard color paper 50 of the leakage sensing unit 1200; And
And a control unit (1430) for reading the color image of the color change paper (20) and the color image of the standard color paper (50) taken by the imaging unit (1420) Protective cover.
The method of claim 6,
Wherein the vision inspection unit (1400) further comprises a wireless communication module (1440).
An elongated pipe P1 having an elongated first nut N1 at one end and an elongated second pipe P2 having a second nut N2 fastened to the first nut N1 of the one pipe P1, ) For preventing the pipe fitting from loosening, characterized in that the protective cover
A first insertion groove 2131 disposed at one end of the cylinder member 2110 and supporting and retaining the one side pipe P1, A closure member 2140 disposed at the other end of the cylinder member 2110 to form a second insertion groove for supporting and supporting the other pipe P2, A casing 2100 having a seating portion 2150 recessed along an outer circumferential surface of the casing 2100;
A leakage sensing part 2200 disposed on the seating part 2150 of the casing 2100;
A discoloring paper 20 interposed between the leakage sensing part 2200 and the seating part 2150 and discolored through contact with a fluid leaked from the piping fitting;
A standard color indicator unit 2500 which receives the standard color paper 50 colored in the same color as the original color of the color changing paper 20 and is fitted on the outer peripheral surface of the circulation member 2110 of the casing 2100, );
A head portion 2310 and a third insertion groove 2330 formed along the longitudinal direction are formed at one end of the male screw thread portion 2320 and the male screw thread portion 2320 so as to be fastened to the female screw thread portion 2130 of the casing 2100 A fastening member 2300 provided; And
A vision capable of comparing the color image obtained by the image sensing section 2430 with the color image 20 of the leakage detecting section 2200 and the standard color paper 50 of the standard color indicator section 2500, And an inspection unit 2400
The seating portion 2150 has a through hole 2120 in the inner region in fluid communication between the inner space 2111 of the circulating member 2110 and the seating portion 2150, Wherein the leakage of the fluid from the pipe fitting accommodated in the inner space (2111) leads to the contact with the discoloration paper (20).
The method of claim 8,
The seat portion 2150 includes two engagement grooves 2124 spaced apart from each other at a predetermined interval in the inner region,
Wherein the leakage detection unit (2200) has two fastening protrusions (2240) protruding from the inner surface of the leakage sensing unit (2200) with a predetermined gap therebetween.
The method of claim 8,
Wherein the standard color indicator part (2500) has a first receiving groove (2510) on a side surface to provide a space for accommodating the standard color paper (50).
The method of claim 8,
Wherein the cylinder member (2110) forms a concave portion (2160) corresponding to the standard color indicator (2500) around the outer circumferential surface.
The method of claim 8,
Wherein the leakage sensing part (2200) and the standard color indicator part (2500) are made of a transparent material.
The method of claim 8,
The vision inspection unit 2400,
A light source part 2410 for emitting light to the surface of the leakage sensing part 2200;
An image sensing unit 2420 disposed on the leakage sensing unit 2200 and capturing an image of the color changing paper 20 and the standard color paper 50 of the leakage sensing unit 2200; And
And a control unit (2430) for reading the color image of the color change paper (20) and the color image of the standard color paper (50) taken by the image sensing unit (2420) Protective cover.
14. The method of claim 13,
Wherein the vision inspection unit (2400) further comprises a wireless communication module (2440).

Images