CN114136552A - Welding seam sealing detection tool and welding seam sealing detection method and system - Google Patents
Welding seam sealing detection tool and welding seam sealing detection method and system Download PDFInfo
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- CN114136552A CN114136552A CN202111387728.0A CN202111387728A CN114136552A CN 114136552 A CN114136552 A CN 114136552A CN 202111387728 A CN202111387728 A CN 202111387728A CN 114136552 A CN114136552 A CN 114136552A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/225—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for welds
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- Examining Or Testing Airtightness (AREA)
Abstract
The embodiment of the specification provides a welding seam sealing detection tool and a welding seam sealing detection method, and the welding seam sealing detection tool comprises the following steps: the box body is provided with a detection port; the first sealing box cover and the second sealing box cover are used for sealing and fastening two ends of the box body; the box body is sleeved on a pipe section to be detected containing a welding line to be detected, the first sealing box cover and the second sealing box cover are respectively used for sealing and fastening two target gaps, the target gaps are gaps between the end portion of the box body and the pipe section to be detected, so that a closed space is formed between the box body and the pipe section to be detected, and quantitative detection is carried out on the penetrability defect of the welding line to be detected after the box body is connected with an external leak detector through a detection port. The pipe section to be detected containing the welding line to be detected is sleeved through the box body, the box body and the pipe section to be detected are sealed through the first sealing box cover and the second sealing box cover, the sealing effect is good, whether the welding line to be detected leaks can be judged quickly, conveniently and definitely, small-batch detected parts can be easily and efficiently finished, and the micro leakage can be accurately quantified.
Description
Technical Field
The specification relates to the technical field of nondestructive testing, in particular to a welding seam sealing detection tool, a welding seam sealing detection method and a welding seam sealing detection system.
Background
In the prior art, the helium leak detection method of the pipe butt weld in the process evaluation stage or the sample manufacturing stage can generally adopt two methods, namely a suction gun method and a helium spraying method. In these cases, the tube is in a free state, with the upper and lower nozzles unobstructed by any material.
The method comprises the steps of filling helium into a cavity of a pipe section to be detected after the pipe cavity of the pipe section to be detected is sealed, scanning the outer surface of a welding seam by using a suction gun, wherein if the welding seam has a penetration defect, the helium leaked from the pipe cavity can be sucked into a leak detector by the suction gun to be detected, and in the scanning process, a probe nozzle and the welding seam are kept within 3mm, so that the scanning speed of the detected welding seam does not exceed the speed of detecting leakage of a calibration leak hole, and the requirement on inspection personnel is high; in addition, the suction gun method has low sensitivity, and is easy to miss detection when the operation is not standard, particularly for defects with small leak rate.
Helium leakage detection by a helium spraying method is characterized in that after a pipe cavity of a pipe section to be detected is sealed, helium is sprayed at a welding line, the pipe cavity is vacuumized, and if a penetrating defect exists on the welding line, the helium leaked into the pipe cavity can be detected by a leakage detector. In both methods, only a sealing tool for a pipe opening needs to be manufactured, the leakage detection system is relatively simple, but the leakage detection system is a semi-quantitative technology and cannot accurately quantify.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide a welding seam sealing detection tool, a welding seam sealing detection method, and a welding seam sealing detection system.
The embodiment of the specification provides the following technical scheme:
the embodiment of the specification provides a welding seam sealing detection tool, including:
the box body is provided with a detection port;
the first sealing box cover and the second sealing box cover are used for sealing and fastening two ends of the box body;
the box body is sleeved on a pipe section to be detected containing a welding line to be detected, the first sealing box cover and the second sealing box cover are respectively used for sealing and fastening two target gaps, the target gaps are gaps between the end portion of the box body and the pipe section to be detected, so that a closed space is formed between the box body and the pipe section to be detected, and the penetration defect of the welding line to be detected is quantitatively detected after the detection port is connected with an external leak detector.
Preferably, the inner side of the first sealing box cover and/or the second sealing box cover is provided with an internal thread, the outer diameter surface of the end part of the box body is provided with an external thread matched with the internal thread, and the first sealing box cover and/or the second sealing box cover is in threaded connection with the two ends of the box body.
Preferably, the box body is a T-shaped box body, two ends of a vertical arm of the T-shaped box body are used for mounting a first sealing box cover and a second sealing box cover, and the detection port is arranged at the end of a cross arm of the T-shaped box body.
Preferably, the box body comprises a tubular main pipe and a tubular sub pipe, one end of the sub pipe is connected to the main pipe, so that the main pipe and the sub pipe form a three-way box body, the main pipe is used for being sleeved on the tubular pipe section to be detected, the first sealing box cover and the second sealing box cover are installed at two ends of the main pipe, and the outer end of the sub pipe is the detection port.
Preferably, the detection port is provided with a flange structure.
And/or the maximum extra height of the inner wall of the box body from the welding line to be detected is 1-3 mm;
and/or the wall thickness of the box body is 5-8 mm;
and/or the length of the box body is 100-200 mm.
Preferably, the welding seam sealing detection tool further comprises a first sealing ring and/or a second sealing ring, wherein the first sealing ring is arranged between the first sealing box cover and the box body end portion, and the second sealing ring is arranged between the second sealing box cover and the box body end portion.
Preferably, the inner sides of the end faces at two ends of the box body are respectively provided with an inverted inner R angle, and the first sealing ring and/or the second sealing ring are embedded in the inverted inner R angles.
Preferably, the surface of the first sealing box cover and/or the second sealing box cover is/are subjected to knurling treatment; and/or the box body, the first sealing box cover and/or the second sealing box cover are made of metal;
and/or, be provided with on the box body and detect the mouth and include: the middle position of the box body is provided with a detection port.
The embodiment of the specification provides a weld joint sealing detection method, which is used for carrying out sealing detection on a weld joint by using the weld joint sealing detection tool, and the weld joint sealing detection method comprises the following steps:
sleeving a box body of the welding seam sealing detection tool on a pipe section to be detected containing a welding seam to be detected;
respectively and tightly sealing a first sealing box cover and a second sealing box cover of the welding seam sealing detection tool with two target gaps, wherein the target gaps are gaps between the end part of the box body and the pipe section to be detected, so that a closed space is formed between the box body and the pipe section to be detected;
connecting a leak detector to a detection port of the welding seam sealing detection tool;
and filling tracer gas into the inner cavity of the pipe section to be detected, vacuumizing the closed space, and quantitatively detecting the tracer gas through the leak detector so as to detect the welding line to be detected.
The embodiment of the specification provides a welding seam sealing detection system, which comprises a leak detector, an inflation device and any one of the welding seam sealing detection tools;
the box body of the welding seam sealing detection tool is sleeved on a pipe section to be detected containing a welding seam to be detected, a first sealing box cover and a second sealing box cover of the welding seam sealing detection tool are respectively fastened with two target gaps in a sealing mode, the target gaps are gaps between the end portion of the box body and the pipe section to be detected, and therefore a closed space is formed between the box body and the pipe section to be detected;
the inflation device is used for inflating tracer gas into the inner cavity of the pipe section to be detected;
the leak detector is connected with a detection port of the welding seam sealing detection tool and used for detecting the gas in the closed space so as to quantitatively detect the tracer gas.
Compared with the prior art, the beneficial effects that can be achieved by the at least one technical scheme adopted by the embodiment of the specification at least comprise:
according to the invention, the pipe section to be detected containing the welding line to be detected is sleeved by the box body, and the box body and the pipe section to be detected are sealed by the first sealing box cover and the second sealing box cover, so that the sealing effect is good;
connect outside leak detector through detecting the mouth, through to waiting to detect the pipe section intracavity fill into the tracer gas (like the helium) of measuring usefulness, then to box body evacuation, if there is the penetrability defect on the welding seam, then the helium in the lumen will leak into the box body from the welding seam, the helium just can be detected by the leak detector like this, the operation is comparatively simple, can be fast, convenient, judge clearly whether examined the welding seam has the hourglass, can relax, the high-efficient detected piece that accomplishes small batch detects, and to the accurate quantitative determination of trace leakage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of an internal structure of a welding seam sealing detection tool provided by the invention;
FIG. 2 is a schematic view of an external structure of a weld joint seal detection tool provided by the present invention;
FIG. 3 is a schematic flow chart of a weld seal detection method provided by the present invention;
FIG. 4 is a block diagram of a weld seal detection system according to the present invention.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number and aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be noted that the drawings provided in the following embodiments are only schematic and illustrative of the basic concept of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, the type, quantity and ratio of the components in actual implementation can be changed freely by a weld sealing detection tool, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that aspects may be practiced without these specific details.
The technical solutions provided by the embodiments of the present application are described below with reference to the accompanying drawings.
Referring to fig. 1-2, a welding seam sealing detection tool includes:
the box body 3 is provided with a detection port;
the first sealing box cover 1 and the second sealing box cover 2 are used for sealing and fastening two ends of the box body 3;
the box body 3 is sleeved on a pipe section to be detected containing a welding line to be detected, the first sealing box cover 1 and the second sealing box cover 2 are used for sealing and fastening two target gaps respectively, the target gaps are gaps between the end portion of the box body 3 and the pipe section to be detected, so that a closed space is formed between the box body 3 and the pipe section to be detected, and quantitative detection is performed on the penetrability defect of the welding line to be detected after an external leak detector is connected through a detection port.
It should be noted that the box body 3 is sleeved outside the pipe section to be detected, the welding line to be detected on the pipe section to be detected is positioned inside the box body 3, and the two ends of the box body 3 are sealed and fastened through the first sealing box cover 1 and the second sealing box cover 2, so that the sealing performance between the bottom of the box body 3 and the pipe section to be detected is ensured;
when a leak detection test is carried out, after the box body 3 and the pipe section to be detected are sealed through the first sealing box cover 1 and the second sealing box cover 2, the pipe cavity of the pipe section to be detected is sealed, helium is filled into the pipe cavity of the pipe section to be detected, then the box body 3 is vacuumized, if the penetration defect exists on the welding line, the helium leaked into the box body from the pipe cavity of the pipe section to be detected can be detected by a leak detector, whether the detected welding line leaks or not can be judged quickly, conveniently and definitely, if the leakage exists, the leakage rate is large or small, and accurate quantitative detection of the leakage rate of the welding line is realized.
It should be further explained that, the above-mentioned adoption is filled with helium to the lumen of waiting to detect the pipeline section and is detected, also can select other gas that easily detects to detect according to actual conditions and detect, simultaneously, to waiting to detect the pipeline section in small batches, only need to adopt a set of sealed frock can accomplish the detection, treat that the pipeline section micro leakage that detects can accurate ration to provide reliable basis for judging whether qualified, can practice thrift the detection cost.
In some embodiments, the inner side of the first sealing cover 1 and/or the second sealing cover 2 is provided with an internal thread, the outer diameter surface of the end portion of the box body 3 is provided with an external thread matching with the internal thread, and the first sealing cover 1 and/or the second sealing cover 2 is screwed with both ends of the box body 3.
It should be noted that, internal threads are processed on the inner sides of the first sealing box cover 1 and the second sealing box cover 2, the first sealing box cover 1 and the second sealing box cover 2 are respectively screwed with the two ends of the box body 3, and the first sealing box cover 1 and the second sealing box cover 2 can be connected with the box body 3 by screwing the first sealing box cover 1 and the second sealing box cover 2.
Referring to fig. 2, in some embodiments, the box body 3 is a T-shaped box body, two ends of a vertical arm (e.g., an arm in the vertical direction in the figure) of the T-shaped box body are used for installing the first sealing box cover 1 and the second sealing box cover 2, and the detection port is disposed at an end of a cross arm (e.g., an arm in the horizontal direction in the figure) of the T-shaped box body.
It should be noted that the pipe section to be detected is sleeved by the vertical arm of the T-shaped box body, the first sealing box cover 1 and the second sealing box cover 2 are used for sealing between the two ends of the vertical arm and the pipe section to be detected, the cross arm of the T-shaped box body corresponds to the welding line to be detected, the box body 3 is a T-shaped box body, and gas flows through the cross arm via the vertical arm, so that the gas can flow conveniently.
In some embodiments, the box body 3 includes a tubular main tube 31 and a tubular sub-tube 32, and one end of the sub-tube 32 is connected to the main tube 31, so that the main tube 31 and the sub-tube 32 form a three-way box body 3, wherein the main tube 31 is configured to be sleeved on a tubular pipe section to be detected, the first sealing box cover 1 and the second sealing box cover 2 are installed at two ends of the main tube 31, and the outer end of the sub-tube 32 is a detection port.
It should be noted that, compared with the three-way pipe in the prior art, the main pipe 31 and the sub-pipe 32 form the three-way box body 3, and the size of the main pipe 31 can be determined according to the size of the pipe section to be detected; meanwhile, as the width of the welding line to be detected is generally not too large, the sub-pipe 31 with smaller size can be selected, and the material cost is saved; the main pipe 31 and the sub pipe 32 can be connected by welding; external threads are processed at two ends of the main pipe 31 and are used for connecting the main pipe 31 with the first sealing box cover 1 and the second sealing box cover 2, so that operation is convenient for workers, and meanwhile, the stability of connection between the main pipe 31 and the first sealing box cover 1 and the second sealing box cover 2 is ensured; the first sealing box cover 1 and the second sealing box cover 2 are respectively arranged at two ends of the main pipe 31, the main pipe 31 is sleeved outside the pipe section to be detected, and the two ends of the main pipe 31 and the pipe section to be detected can be sealed, so that a welding line on the pipe section to be detected is positioned in the main pipe 31;
when a weld leak detection test is carried out, when a penetrating crack occurs, gas enters the box body 3 through the crack and then flows into an external leak detector through the sub-pipe 31, and the penetrating defect of the weld to be detected is quantitatively detected so as to carry out an accurate quantitative leak detection test on the weld.
In some embodiments, the detection port is provided with a flange structure;
and/or the maximum extra height of the inner wall of the box body 3 from the welding line to be detected is 1-3 mm;
and/or the wall thickness of the box body 3 is 5-8 mm;
and/or the length of the box body 3 is 100-200 mm.
It should be noted that the flange structure is convenient for being connected with an external leak detector, and the leak detector can be connected without a special switching tool.
It should be further noted that the inner wall of the box body 3 is 1-3 mm larger than the extra height and the outer diameter of the welding seam, so that a certain gap is ensured to exist between the box body 3 and the pipe section to be detected while the box body 3 is sleeved on the pipe section to be detected, and the flow of gas is ensured; the wall thickness of the main pipe is 5-8 mm, the length of the main pipe is 100-200 mm, the sealing functional requirements are met, and the main pipe is light, handy and solid.
In some embodiments, the welding seam sealing detection tool further includes a first sealing ring 4 and/or a second sealing ring 5, where the first sealing ring 4 is disposed between the first seal box cover 1 and the end portion of the box body 3, and the second sealing ring 5 is disposed between the second seal box cover 2 and the end portion of the box body 3.
It should be noted that, by additionally arranging the first seal ring 4 between the first seal box cover 1 and the box body 3 and additionally arranging the second seal ring 5 between the second seal box cover 2 and the box body 3, when the first seal box cover 1 and the second seal box cover 2 are installed on the box body 3, the first seal ring 4 is pressed by the first seal box cover 1, the second seal ring 5 is pressed by the second seal box cover 2, the first seal ring 4 and the second seal ring 5 are pressed to be tightly attached to a pipe section to be detected, and the sealing performance between the box body 3 and the pipe section to be detected is further ensured. In addition, the sealing rings (the sealing rings are the first sealing ring 4 and the second sealing ring 5) can be replaced, the repeated use times of the first sealing box cover 1 and the second sealing box cover 2 can be increased, and the use convenience of the first sealing box cover 1 and the second sealing box cover 2 can be improved.
In some embodiments, the inner sides of the end faces of the box body 3 are chamfered at an inner R angle, and the first sealing ring 4 and/or the second sealing ring 5 are embedded in the chamfered inner R angle.
It should be noted that, the inner inverted inner R corners of the end faces at the two ends of the box body 3 are used for facilitating the installation of the first sealing ring 4 and the second sealing ring 5, the first sealing ring 4 and the second sealing ring 5 are respectively embedded in the inverted inner R corners at the two ends, only the first sealing ring 4 and the second sealing ring 5 are needed to be installed during the first operation, and the first sealing ring 4 and the second sealing ring 5 can be directly used later, so that the installation steps are reduced, and the time is saved. The inner diameters of the first sealing ring 4 and the second sealing ring 5 are the same as the outer diameter of the pipe section to be detected, and the first sealing ring 4 and the second sealing ring 5 can be sleeved outside the pipe section to be detected.
In some embodiments, the surface of the first sealing box cover 1 and/or the second sealing box cover 2 is/are knurled;
and/or the box body 3, the first sealing box cover 1 and/or the second sealing box cover 2 are made of metal;
and/or, be provided with on the box body 3 and detect the mouth and include: the middle part of the box body 3 is provided with a detection port.
It should be noted that, knurling processing is all carried out on the surfaces of the first sealing box cover 1 and the second sealing box cover 2, and an operator can screw up and loosen the first sealing box cover 1 and the second sealing box cover 2 by bare hands without using any tool, so that the use is convenient.
In some embodiments, the box body 3, the first sealing box cover 1 and/or the second sealing box cover 2 may be made of a metal material, and the tool may be repeatedly used by manufacturing the structural body of the metal material.
It should be noted that, the box body 3, the first sealing box cover 1 and the second sealing box cover 2 are preferably made of stainless steel materials, the manufacturing cost of the box body 3, the first sealing box cover 1 and the second sealing box cover 2 is low, and the aesthetics and the service life of the box body 3, the first sealing box cover 1 and the second sealing box cover 2 are ensured.
In some embodiments, the detection port may be disposed at a middle position of the box body 3, so that the box body 3 is conveniently sleeved on the pipe section to be detected, and the leak detector is also conveniently connected for detection.
Based on the same inventive concept, the embodiment of the specification further provides a weld joint sealing detection method, which can be used for carrying out sealing detection on a weld joint based on the weld joint sealing detection tool of any one of the embodiments.
Referring to fig. 3, the method for detecting the weld seal includes:
step S101, sleeving a box body 3 of a welding seam sealing detection tool on a pipe section to be detected containing a welding seam to be detected;
step S103, respectively and tightly sealing a first sealing box cover 1 and a second sealing box cover 2 of the welding seam sealing detection tool with two target gaps, wherein the target gaps are gaps between the end part of a box body 3 and a pipe section to be detected, so that a closed space is formed between the box body 3 and the pipe section to be detected;
step S105, connecting the leak detector to a detection port of the welding seam sealing detection tool;
and S107, filling tracer gas into the inner cavity of the pipe section to be detected, vacuumizing the closed space, and quantitatively detecting the tracer gas through a leak detector so as to detect the welding line to be detected.
The leak detection principle of the method is that a pipe cavity of a pipe to be detected is sealed, a vacuum box (namely the weld seal detection tool) is used for covering and sealing a weld joint, then a tracer gas (such as helium) is filled into the pipe cavity, then the vacuum box is vacuumized, and if the weld joint has a penetrability defect, the helium leaked into the vacuum box from the pipe cavity can be accurately and quantitatively detected by a leak detector.
Based on the same inventive concept, the embodiment of the specification also provides a welding seam sealing detection system,
referring to fig. 4, the weld joint sealing detection system includes a leak detector, an inflator, and any one of the above weld joint sealing detection tools;
the box body of the welding seam sealing detection tool is sleeved on a pipe section to be detected containing a welding seam to be detected, a first sealing box cover 1 and a second sealing box cover 2 of the welding seam sealing detection tool are respectively fastened with two target gaps in a sealing mode, the target gaps are gaps between the end portion of the box body 3 and the pipe section to be detected, and therefore a closed space is formed between the box body 3 and the pipe section to be detected;
the inflation device is used for inflating tracer gas into the inner cavity of the pipe section to be detected;
the leak detector is connected with a detection port of the welding seam sealing detection tool and used for detecting gas in a closed space so as to quantitatively detect tracer gas.
It should be noted that the trace gas that the inflator fills the pipe segment to be tested may be helium or other gas that is easily detected by a leak detector.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is simple, and for the relevant points, reference may be made to the partial description of the system embodiments.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a welding seam seals detects frock which characterized in that includes:
the box body (3), the box body (3) is provided with a detection port;
the first sealing box cover (1) and the second sealing box cover (2) are used for sealing and fastening two ends of the box body (3);
the box body (3) is sleeved on a pipe section to be detected containing a welding line to be detected, the first sealing box cover (1) and the second sealing box cover (2) are respectively used for sealing and fastening two target gaps, the target gaps are gaps between the end portion of the box body (3) and the pipe section to be detected, so that a closed space is formed between the box body (3) and the pipe section to be detected, and the penetration defect of the welding line to be detected is quantitatively detected after the detection port is connected with an external leak detector.
2. The welding seam sealing detection tool according to claim 1, characterized in that inner threads are processed on the inner side of the first sealing box cover (1) and/or the second sealing box cover (2), outer threads matched with the inner threads are processed on the outer diameter surface of the end part of the box body (3), and the first sealing box cover (1) and/or the second sealing box cover (2) are in threaded connection with the two ends of the box body (3).
3. The welding seam sealing detection tool according to claim 1, wherein the box body (3) is a T-shaped box body, two ends of a vertical arm of the T-shaped box body are used for installing a first sealing box cover (1) and a second sealing box cover (2), and the detection port is arranged at the end part of a cross arm of the T-shaped box body.
4. The welding seam sealing detection tool according to claim 1, wherein the box body (3) comprises a tubular main pipe (31) and a tubular sub-pipe (32), one end of the sub-pipe (32) is connected to the main pipe (31), so that the main pipe (31) and the sub-pipe (32) form a three-way box body (3), wherein the main pipe (31) is used for being sleeved on the tubular pipe section to be detected, the first sealing box cover (1) and the second sealing box cover (2) are installed at two ends of the main pipe (31), and the outer end of the sub-pipe (32) is the detection port.
5. The weld joint sealing detection tool according to claim 1, wherein the detection port is provided with a flange structure;
and/or the maximum residual height of the inner wall of the box body (3) from the welding line to be detected is 1-3 mm;
and/or the wall thickness of the box body (3) is 5-8 mm;
and/or the length of the box body (3) is 100-200 mm.
6. The welding seam sealing detection tool according to claim 1, further comprising a first sealing ring (4) and/or a second sealing ring (5), wherein the first sealing ring (4) is arranged between the end portion of the first sealing box cover (1) and the end portion of the box body (3), and the second sealing ring (5) is arranged between the end portion of the second sealing box cover (2) and the end portion of the box body (3).
7. The welding seam sealing detection tool according to claim 7, characterized in that the inner sides of the end faces of the two ends of the box body (3) are both provided with an inverted inner R angle, and the first sealing ring (4) and/or the second sealing ring (5) are embedded in the inverted inner R angle.
8. The welding seam sealing detection tool according to claim 1, characterized in that the surface of the first sealing box cover (1) and/or the second sealing box cover (2) is/are knurled;
and/or the box body (3), the first sealing box cover (1) and/or the second sealing box cover (2) are made of metal;
and/or, be provided with on box body (3) and detect the mouth and include: the middle part of the box body (3) is provided with a detection port.
9. A welding seam sealing detection method is characterized in that the welding seam is subjected to sealing detection based on the welding seam sealing detection tool according to any one of claims 1 to 8, and the welding seam sealing detection method comprises the following steps:
sleeving a box body of the welding seam sealing detection tool on a pipe section to be detected containing a welding seam to be detected;
respectively and tightly sealing a first sealing box cover and a second sealing box cover of the welding seam sealing detection tool with two target gaps, wherein the target gaps are gaps between the end part of the box body and the pipe section to be detected, so that a closed space is formed between the box body and the pipe section to be detected;
connecting a leak detector to a detection port of the welding seam sealing detection tool;
and filling tracer gas into the inner cavity of the pipe section to be detected, vacuumizing the closed space, and quantitatively detecting the tracer gas through the leak detector so as to detect the welding line to be detected.
10. A weld seal detection system, characterized by comprising a leak detector, an inflation device and a weld seal detection tool according to any one of claims 1 to 8;
the box body of the welding seam sealing detection tool is sleeved on a pipe section to be detected containing a welding seam to be detected, a first sealing box cover and a second sealing box cover of the welding seam sealing detection tool are respectively fastened with two target gaps in a sealing mode, the target gaps are gaps between the end portion of the box body and the pipe section to be detected, and therefore a closed space is formed between the box body and the pipe section to be detected;
the inflation device is used for inflating tracer gas into the inner cavity of the pipe section to be detected;
the leak detector is connected with a detection port of the welding seam sealing detection tool and used for detecting the gas in the closed space so as to quantitatively detect the tracer gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111387728.0A CN114136552A (en) | 2021-11-22 | 2021-11-22 | Welding seam sealing detection tool and welding seam sealing detection method and system |
Applications Claiming Priority (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118150066A (en) * | 2024-05-10 | 2024-06-07 | 中铁六局集团有限公司 | Device and method for detecting leakage in narrow space at joint of large pipeline |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2721875A1 (en) * | 1977-05-14 | 1978-11-23 | C Berckmueller Metallwarenfabr | Checking of metal tubes for faulty internal coatings - is based on measuring resistance between tube and metal mandrel which is driven by V=pulley |
| DE4104503A1 (en) * | 1991-02-14 | 1992-08-20 | Kavernen Bau Betriebs Gmbh | Pipe-joint gas sealing testing method - applying indicator gas externally via gas-tight collar applied to each joint, flushing pipe internally to carry gas to detector |
| CN201757696U (en) * | 2010-03-10 | 2011-03-09 | 中国科学院等离子体物理研究所 | Low temperature pipeline welding bead leak detection tool |
| CN104764566A (en) * | 2015-04-22 | 2015-07-08 | 西南石油大学 | Built-out type oil casing air-tight seal detection device and detection method |
-
2021
- 2021-11-22 CN CN202111387728.0A patent/CN114136552A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2721875A1 (en) * | 1977-05-14 | 1978-11-23 | C Berckmueller Metallwarenfabr | Checking of metal tubes for faulty internal coatings - is based on measuring resistance between tube and metal mandrel which is driven by V=pulley |
| DE4104503A1 (en) * | 1991-02-14 | 1992-08-20 | Kavernen Bau Betriebs Gmbh | Pipe-joint gas sealing testing method - applying indicator gas externally via gas-tight collar applied to each joint, flushing pipe internally to carry gas to detector |
| CN201757696U (en) * | 2010-03-10 | 2011-03-09 | 中国科学院等离子体物理研究所 | Low temperature pipeline welding bead leak detection tool |
| CN104764566A (en) * | 2015-04-22 | 2015-07-08 | 西南石油大学 | Built-out type oil casing air-tight seal detection device and detection method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118150066A (en) * | 2024-05-10 | 2024-06-07 | 中铁六局集团有限公司 | Device and method for detecting leakage in narrow space at joint of large pipeline |
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