CN113092573A - High pressure hydrogen storage container internal surface defect detection device - Google Patents
High pressure hydrogen storage container internal surface defect detection device Download PDFInfo
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- CN113092573A CN113092573A CN202110418283.1A CN202110418283A CN113092573A CN 113092573 A CN113092573 A CN 113092573A CN 202110418283 A CN202110418283 A CN 202110418283A CN 113092573 A CN113092573 A CN 113092573A
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- 238000001514 detection method Methods 0.000 title claims abstract description 74
- 230000007547 defect Effects 0.000 title claims abstract description 43
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 34
- 239000001257 hydrogen Substances 0.000 title claims abstract description 34
- 238000003860 storage Methods 0.000 title claims abstract description 31
- 230000005291 magnetic effect Effects 0.000 claims abstract description 102
- 239000000725 suspension Substances 0.000 claims abstract description 80
- 239000006247 magnetic powder Substances 0.000 claims abstract description 56
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 230000005415 magnetization Effects 0.000 claims abstract description 19
- 239000006249 magnetic particle Substances 0.000 claims description 24
- 239000011810 insulating material Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 2
- 238000005516 engineering process Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a device for detecting the defects on the inner surface of a high-pressure hydrogen storage container, which comprises: the device comprises a fluorescent magnetic suspension liquid supply pool, a magnetic powder detection core rod, a residual liquid collecting pool and a magnetization control cabinet; fluorescent magnetic suspension liquid is contained in the fluorescent magnetic suspension liquid supply pool; the magnetic powder detection core rod penetrates through the interior of the container to be detected; a plurality of magnetic suspension liquid outlet ports are formed in the magnetic powder detection core rod; the two ends of the magnetic powder detection core rod are connected with the fluorescent magnetic suspension supply pool through pipelines; the residual liquid collecting pool is communicated with a container to be detected; the magnetization control cabinet is electrically connected with the magnetic powder detection core rod and used for controlling the magnetic powder detection core rod to generate a circumferential magnetic field, and after the inner surface of the container to be detected is wetted by the fluorescent magnetic suspension, magnetic marks are generated at the defect position of the container to be detected under the action of the circumferential magnetic field, so that the detection of the defects on the inner surface of the high-pressure hydrogen storage container is realized.
Description
Technical Field
The invention relates to the technical field of container defect detection, in particular to a device for detecting defects on the inner surface of a high-pressure hydrogen storage container.
Background
The high-pressure hydrogen storage container stores high-pressure hydrogen of more than 45MPa in the using process, the inner surface of the container is in a hydrogen environment, hydrogen embrittlement damage is easy to occur, the crack propagation rate in the environment is more than 30 times that in the air environment, the container is in an alternating load working condition in the using process, the container is easy to explode due to crack propagation, internal defects of the container are basically longitudinally distributed due to the reasons of stress distribution of the container, manufacturing process and the like, and longitudinal defects are relatively harmful, so that the longitudinal defects are mainly detected.
Because the high-pressure hydrogen storage container is slender and has small openings at two ends, the high-pressure hydrogen storage container cannot be directly contacted or observed, and the internal defects are difficult to detect. At present, the ultrasonic detection technology is commonly used for detecting the defects of the container, but the sensitivity of the existing ultrasonic detection technology cannot meet the requirement, the defect with the depth less than 0.6mm cannot be detected, and the requirement of detecting the defects on the inner surface of the high-pressure hydrogen storage container cannot be met.
The magnetic powder detection technology has high sensitivity and is commonly used for detecting the surface defects of the container. After the ferromagnetic material workpiece is magnetized, magnetic induction lines leave and enter the surface of the workpiece at discontinuous parts such as cracks to form a leakage magnetic field, the magnetic powder in magnetic suspension on the surface is adsorbed by the leakage magnetic field to form magnetic marks, the macroscopic magnetic mark display is formed under a specific light source such as white light or ultraviolet rays, the defects such as cracks are found, and the magnetic powder detection can detect the cracks in the micron level.
The existing magnetic powder detection technology and equipment have a plurality of types, but need to be in contact with the surface of a detected workpiece, and the opening of the container of the type is small, so that the container cannot enter the interior of the container for detection, and the detection of the defects on the inner surface of the high-pressure hydrogen storage container cannot be realized.
Disclosure of Invention
The invention aims to provide a device for detecting the defects on the inner surface of a high-pressure hydrogen storage container, which is used for detecting the defects on the inner surface of the high-pressure hydrogen storage container.
In order to achieve the purpose, the invention provides the following scheme:
a high pressure hydrogen storage vessel internal surface defect detection apparatus comprising: the device comprises a fluorescent magnetic suspension liquid supply pool, a magnetic powder detection core rod, a residual liquid collecting pool and a magnetization control cabinet;
the fluorescent magnetic suspension liquid supply pool is used for containing fluorescent magnetic suspension liquid; the magnetic powder detection core rod penetrates through the interior of the container to be detected; a plurality of magnetic suspension liquid outlet ports are formed in the magnetic powder detection core rod; the two ends of the magnetic powder detection core rod are both communicated with the fluorescent magnetic suspension liquid supply pool; the residual liquid collecting pool is communicated with the container to be detected; the magnetization control cabinet is electrically connected with the magnetic particle detection core rod and is used for controlling the magnetic particle detection core rod to generate a circumferential magnetic field;
when the fluorescent magnetic suspension flows into the magnetic powder detection core rod from one end of the magnetic powder detection core rod, the fog-shaped spraying liquid is sprayed from the magnetic suspension exit port to moisten the inner surface of the container to be detected, and the position of the inner surface of the container to be detected, at which the magnetic marks are generated, is a defect position under the action of the circumferential magnetic field.
Optionally, the device for detecting defects on the inner surface of the high-pressure hydrogen storage container further comprises: the insulating material of the tip of waiting to detect the container, insulating material is used for keeping apart wait to detect the container with the magnetic particle testing plug.
Optionally, a fluorescent magnetic suspension supply pump is arranged in the fluorescent magnetic suspension supply pool, and the fluorescent magnetic suspension supply pool is communicated with one end of the magnetic powder detection core rod through the fluorescent magnetic suspension supply pump.
Optionally, set up the raffinate collecting pump in the raffinate collecting pit, the raffinate collecting pit passes through the raffinate collecting pump with wait to detect the container intercommunication.
Optionally, one end of the magnetic particle testing core rod is communicated with the fluorescent magnetic suspension supply tank through a supply pipe, and the other end of the magnetic particle testing core rod is communicated with the fluorescent magnetic suspension supply tank through a return pipe.
Optionally, a supply valve is arranged on the supply pipe; and the return pipe is provided with a return valve.
Optionally, the magnetization control cabinet is electrically connected with the magnetic powder detection core rod through a cable.
Optionally, the magnetic powder detection mandrel is an aluminum alloy tube.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention discloses a device for detecting the defects on the inner surface of a high-pressure hydrogen storage container, which comprises: the device comprises a fluorescent magnetic suspension liquid supply pool, a magnetic powder detection core rod, a residual liquid collecting pool and a magnetization control cabinet; when the fluorescent magnetic suspension in the fluorescent magnetic suspension supply pool flows into the magnetic powder detection core rod from one end of the magnetic powder detection core rod, the fluorescent magnetic suspension sprays fog-shaped spraying liquid through the magnetic suspension exit port to moisten the inner surface of the container to be detected, the fluorescent magnetic suspension stops flowing into the magnetic powder detection core rod from one end of the magnetic powder detection core rod, the fluorescent magnetic suspension flows back to the fluorescent magnetic suspension supply pool from the other end of the magnetic powder detection core rod, accumulated fluorescent magnetic suspension in the container to be detected flows to the residual liquid collection pool, meanwhile, the magnetization control cabinet controls the magnetic powder detection core rod to generate current so as to generate a circumferential magnetic field, and under the action of the circumferential magnetic field, the inner surface of the high-pressure hydrogen storage container moistened by the fluorescent magnetic suspension generates magnetic marks at the defect position, so that the detection of the defects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a view showing a structure of a device for detecting defects on the inner surface of a high-pressure hydrogen storage vessel according to an embodiment of the present invention;
fig. 2 is a schematic view of a device for detecting defects on the inner surface of a high-pressure hydrogen storage vessel according to an embodiment of the present invention.
Description of the symbols: 1-fluorescent magnetic suspension supply pool, 2-magnetic powder detection core rod, 3-residual liquid collection pool, 4-magnetization control cabinet, 5-container to be detected, 6-insulating material, 7-fluorescent magnetic suspension supply pump, 8-supply pipe, 9-residual liquid collection pump, 10-residual liquid collection pipe, 11-supply valve, 12-reflux pipe, 13-reflux valve and 14-cable.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
The invention aims to provide a device for detecting the defects on the inner surface of a high-pressure hydrogen storage container, aims to realize the detection of the defects on the inner surface of the high-pressure hydrogen storage container, and can be applied to the technical field of container defect detection.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
FIG. 1 is a schematic diagram of a device for detecting defects on the inner surface of a high-pressure hydrogen storage vessel according to an embodiment of the present invention. As shown in fig. 1, the apparatus for detecting defects on the inner surface of a high-pressure hydrogen storage container in the present embodiment includes: a fluorescent magnetic suspension liquid supply pool 1, a magnetic powder detection core rod 2, a residual liquid collecting pool 3 and a magnetization control cabinet 4.
Fluorescent magnetic suspension liquid is contained in the fluorescent magnetic suspension liquid supply pool 1; the magnetic powder detection core rod 2 penetrates through the interior of a container 5 to be detected; a plurality of magnetic suspension liquid outlet ports are formed in the magnetic powder detection core rod 2; two ends of the magnetic powder detection core rod 2 are communicated with the fluorescent magnetic suspension supply pool 1; the residual liquid collecting pool 3 is communicated with a container 5 to be detected; the magnetization control cabinet 4 is electrically connected with the magnetic particle testing core rod 2, and the magnetization control cabinet 4 is used for controlling the magnetic particle testing core rod 2 to generate a circumferential magnetic field.
When the fluorescent magnetic suspension flows into the magnetic powder detection core rod 2 from one end of the magnetic powder detection core rod 2, the fog-like spraying liquid is sprayed from the magnetic suspension exit port to wet the inner surface of the container 5 to be detected, and the position of the inner surface of the container 5 to be detected, which generates the magnetic marks, is a defect position under the action of the circumferential magnetic field.
The fluorescent magnetic suspension flows into the magnetic powder detection core rod 2 from one end of the magnetic powder detection core rod 2, when the fluorescent magnetic suspension stops flowing into the magnetic powder detection core rod 2 from one end of the magnetic powder detection core rod 2, the fluorescent magnetic suspension flows back to the fluorescent magnetic suspension supply pool 1 from the other end of the magnetic powder detection core rod 2, and the accumulated fluorescent magnetic suspension in the container 5 to be detected flows to the residual liquid collection pool 3.
As an alternative embodiment, the magnetic particle testing core rod 2 is an aluminum alloy tube.
Specifically, the diameter of the main body part of the container 5 to be detected can be but is not limited to 0.4-0.7 m, the length can be but is not limited to 5.0-10.0 m, the diameter of the opening parts at two ends of the container 5 to be detected can be but is not limited to 80mm, and the container 5 to be detected is a high-pressure hydrogen storage container. The outer diameter of the magnetic powder detection core rod 2 can be but not limited to 40mm, the pipe wall thickness of the magnetic powder detection core rod 2 can be but not limited to 3mm, the pipe wall of the magnetic powder detection core rod 2 is circumferentially spaced by 90 degrees, and the axial spacing is 150.0mm, and the diameter of the magnetic suspension emergent port is 1.0mm, the setting position and the mode of the magnetic suspension emergent port can be adjusted and set according to actual requirements, the magnetic powder detection core rod 2 adopts a threaded connection mode, and the length of the magnetic powder detection core rod can be adjusted according to the requirements of a container 5 to be.
Specifically, the magnetization control cabinet 4 provides a magnetization current for the magnetic particle testing core rod 2, and the magnetization control cabinet 4 can adjust the magnitude of the magnetization current according to the different diameters and the like of the containers 5 to be tested so as to adapt to the detection of the containers with different diameters.
As an optional embodiment, the apparatus for detecting defects on the inner surface of a high-pressure hydrogen storage vessel further comprises: and the insulating material 6 is arranged at the end part of the container 5 to be detected, and the insulating material 6 is used for isolating the container 5 to be detected and the magnetic powder detection core rod 2. Figure 1 shows a schematic view of only one end.
As an alternative embodiment, a fluorescent magnetic suspension supply pump 7 is arranged in the fluorescent magnetic suspension supply tank 1, and the fluorescent magnetic suspension supply tank 1 is communicated with one end of the magnetic particle testing core rod 2 through the fluorescent magnetic suspension supply pump 7. The fluorescent magnetic suspension in the fluorescent magnetic suspension supply tank 1 is input into the magnetic particle testing core rod 2 through a supply pipe 8 by a fluorescent magnetic suspension supply pump 7.
As an optional implementation manner, a residual liquid collecting pump 9 is arranged in the residual liquid collecting pool 3, and the residual liquid collecting pool 3 is communicated with the container 5 to be detected sequentially through the residual liquid collecting pump 9 and the residual liquid collecting pipe 10. And pumping the fluorescence magnetic suspension effusion in the container 5 to be detected into the residual liquid collecting pool 3 by a residual liquid collecting pump 9.
As an alternative embodiment, one end of the magnetic particle testing core rod 2 is communicated with the fluorescent magnetic suspension supply tank 1 through a supply pipe 8, and the other end of the magnetic particle testing core rod 2 is communicated with the fluorescent magnetic suspension supply tank 1 through a return pipe 12.
As an alternative embodiment, the supply line 8 is provided with a supply valve 11 and the return line 12 is provided with a return valve 13.
As an alternative embodiment, the magnetization control cabinet 4 is electrically connected to the magnetic particle testing core rod 2 through a cable 14.
As shown in fig. 2, when detecting defects on the inner surface of the container, first, the supply valve and the fluorescent magnetic suspension supply pump are opened, the return valve is closed, and under the action of the fluorescent magnetic suspension supply pump, the fluorescent magnetic suspension in the fluorescent magnetic suspension supply tank flows into the magnetic powder detection core rod from one end of the magnetic powder detection core rod through the supply pipe, and the inner surface of the container to be detected is wetted by spraying the mist spray liquid through the magnetic suspension exit port; after the inner surface of the container to be detected is wet, closing the supply valve and the fluorescent magnetic suspension supply pump, opening and closing the return valve, stopping the fluorescent magnetic suspension from flowing into the magnetic powder detection core rod from one end of the magnetic powder detection core rod, returning the fluorescent magnetic suspension to the fluorescent magnetic suspension supply pool from the other end of the magnetic powder detection core rod, opening the residual liquid collection pump, and allowing the accumulated fluorescent magnetic suspension in the container to be detected to flow to the residual liquid collection pool; repeating the above operations in sequence to ensure that the inner surface of the container to be detected is completely wetted; when the mist spray liquid is sprayed out, the magnetization control cabinet is opened, the magnetizing current is applied to the magnetic particle detection core rod (the current is determined by parameters such as the diameter of the container to be detected), the magnetic particle detection core rod generates a circumferential magnetic field, the inner surface of the container to be detected is magnetized, after all the fluorescent magnetic suspension flows back, the cable is dismantled, the magnetic particle detection core rod is taken out, and under the irradiation of an ultraviolet light source with specific intensity, the inner surface of the container to be detected is observed to determine whether magnetic marks exist.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are presented solely to aid in the understanding of the apparatus and its core concepts; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A device for detecting defects on the inner surface of a high-pressure hydrogen storage container is characterized by comprising: the device comprises a fluorescent magnetic suspension liquid supply pool, a magnetic powder detection core rod, a residual liquid collecting pool and a magnetization control cabinet;
the fluorescent magnetic suspension liquid supply pool is used for containing fluorescent magnetic suspension liquid; the magnetic powder detection core rod penetrates through the interior of the container to be detected; a plurality of magnetic suspension liquid outlet ports are formed in the magnetic powder detection core rod; the two ends of the magnetic powder detection core rod are both communicated with the fluorescent magnetic suspension liquid supply pool; the residual liquid collecting pool is communicated with the container to be detected; the magnetization control cabinet is electrically connected with the magnetic particle detection core rod and is used for controlling the magnetic particle detection core rod to generate a circumferential magnetic field;
when the fluorescent magnetic suspension flows into the magnetic powder detection core rod from one end of the magnetic powder detection core rod, the fog-shaped spraying liquid is sprayed from the magnetic suspension exit port to moisten the inner surface of the container to be detected, and the position of the inner surface of the container to be detected, at which the magnetic marks are generated, is a defect position under the action of the circumferential magnetic field.
2. The apparatus for detecting surface defects in a high-pressure hydrogen storage vessel as claimed in claim 1, further comprising: the insulating material of the tip of waiting to detect the container, insulating material is used for keeping apart wait to detect the container with the magnetic particle testing plug.
3. The apparatus for detecting defects on the inner surface of a high-pressure hydrogen storage container according to claim 1, wherein a fluorescent magnetic suspension supply pump is provided in the fluorescent magnetic suspension supply tank, and the fluorescent magnetic suspension supply tank is communicated with one end of the magnetic particle testing core rod through the fluorescent magnetic suspension supply pump.
4. The apparatus for detecting surface defects in a high pressure hydrogen storage vessel as claimed in claim 1, wherein a raffinate collecting pump is provided in the raffinate collecting tank, and the raffinate collecting tank is communicated with the vessel to be detected through the raffinate collecting pump.
5. The apparatus for detecting defects on the inner surface of a high-pressure hydrogen storage container according to claim 1, wherein one end of the magnetic particle testing core rod is communicated with the fluorescent magnetic suspension supply tank through a supply pipe, and the other end of the magnetic particle testing core rod is communicated with the fluorescent magnetic suspension supply tank through a return pipe.
6. The apparatus for detecting surface defects in a high-pressure hydrogen storage vessel as claimed in claim 5, wherein a supply valve is provided on the supply pipe; and the return pipe is provided with a return valve.
7. The apparatus of claim 1, wherein the magnetization control cabinet is electrically connected to the magnetic particle inspection core rod via a cable.
8. The apparatus for detecting defects on the inner surface of a high-pressure hydrogen storage container according to claim 1, wherein the magnetic powder inspection mandrel is an aluminum alloy tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110418283.1A CN113092573A (en) | 2021-04-19 | 2021-04-19 | High pressure hydrogen storage container internal surface defect detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110418283.1A CN113092573A (en) | 2021-04-19 | 2021-04-19 | High pressure hydrogen storage container internal surface defect detection device |
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| CN113092573A true CN113092573A (en) | 2021-07-09 |
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| CN202110418283.1A Pending CN113092573A (en) | 2021-04-19 | 2021-04-19 | High pressure hydrogen storage container internal surface defect detection device |
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| CN212586297U (en) * | 2020-08-10 | 2021-02-23 | 上海市特种设备监督检验技术研究院 | Be used for high pressure steel gas cylinder bottleneck circumference defect in active service magnetic particle testing device |
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2021
- 2021-04-19 CN CN202110418283.1A patent/CN113092573A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009128249A (en) * | 2007-11-26 | 2009-06-11 | Fujikura Ltd | Magnetic particle inspection device |
| WO2010045765A1 (en) * | 2008-10-24 | 2010-04-29 | 捷特（北京）探伤设备有限公司 | Fluorescent magnetic powder defect-detector with retractable cross magnetic yoke |
| JP2011237227A (en) * | 2010-05-07 | 2011-11-24 | Marktec Corp | Measuring method and measuring apparatus for component concentration in inspection liquid used for wet type fluorescent magnetic powder flaw detection test |
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