CN212586297U - Be used for high pressure steel gas cylinder bottleneck circumference defect in active service magnetic particle testing device - Google Patents
Be used for high pressure steel gas cylinder bottleneck circumference defect in active service magnetic particle testing device Download PDFInfo
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- CN212586297U CN212586297U CN202021646084.3U CN202021646084U CN212586297U CN 212586297 U CN212586297 U CN 212586297U CN 202021646084 U CN202021646084 U CN 202021646084U CN 212586297 U CN212586297 U CN 212586297U
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Abstract
The utility model relates to a be used for high-pressure steel gas cylinder bottleneck circumference defect to be in labour magnetic particle testing device, the device includes and establishes the cylinder shell of high-pressure steel gas cylinder bottleneck department and lower part open-ended for awaiting measuring for the cover, install the magnetizing coil that is used for magnetizing bottleneck screw thread at cylinder shell inner wall, be the battery of magnetizing coil energy supply through power connection and power cord respectively, fix the crossbeam at the shell top, fix on the crossbeam and stretch into the nozzle that is used for spraying the magnetic suspension and provide the container of magnetic suspension for the nozzle through nozzle connection and hose respectively downwards from the shell center. Compared with the prior art, the utility model has the advantages of integration, easy and simple to handle, detection efficiency height, security are still high.
Description
Technical Field
The utility model belongs to the technical field of the special equipment detects technique and specifically relates to a be used for high-pressure steel gas cylinder bottleneck circumference defect at labour magnetic particle testing device.
Background
The magnetic powder detection is carried out by attracting magnetic powder by a leakage magnetic field generated by defects on a magnetized workpiece, is a common nondestructive detection technology for surface defects of steel products, the pressure of a high-pressure gas cylinder is higher than 10Mpa, the high-pressure gas cylinder is used for storing dangerous chemicals such as oxygen, hydrogen, liquefied gas and the like, is special equipment which is mainly inspected and monitored, the opening of a high-pressure gas cylinder is connected with a valve through threads, threads bear huge stress, and simultaneously, as the root of the threads is sharp, the stress concentration is very obvious at the position, so that circumferential cracks are easy to generate at the root parts of the cracks, the size of the opening of the high-pressure gas cylinder is small, the internal thread structure cannot be subjected to on-site in-service detection in the area by the conventional nondestructive detection method, therefore, the in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder is needed to detect the circumferential defects of the thread of the opening and ensure the safety of the high-pressure gas cylinder.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an in-service magnetic particle testing device for high-pressure steel gas cylinder bottleneck circumference defect in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a be used for high-pressure steel gas cylinder bottleneck circumference defect in service magnetic particle testing device, the device is including being used for the cover to establish the cylinder shell that high-pressure steel gas cylinder bottleneck department and lower part open-ended that awaits measuring, install the magnetizing coil that is used for magnetizing bottleneck screw thread at cylinder shell inner wall, be the battery of magnetizing coil energy supply through power connection and power cord respectively, fix the crossbeam at the shell top, fix on the crossbeam and stretch into the nozzle that is used for spraying the magnetic suspension and provide the container of magnetic suspension for the nozzle through nozzle connection and hose respectively from the shell center downwards.
Preferably, the magnetizing coil is formed by winding an oxygen-free copper wire with the diameter of 0.3mm, and the number of turns of the magnetizing coil is not less than 4 kilo turns.
Preferably, the power connector is a circular connector with shielding and anti-loosening functions.
Preferably, the storage battery is an uninterruptible power supply battery with a switch, the voltage is 12V, and the capacity is not less than 12 AH.
Preferably, the nozzle is arranged at the center of the inner part of the shell and comprises a disk part connected with the nozzle joint and a nozzle part arranged at the circumference of the disk part, and the nozzle part is opposite to the inner wall of the shell and used for uniformly wetting the detected surface of the opening of the high-pressure steel gas cylinder to be detected.
Preferably, the container is provided with a piston type manual pressurizing device for pressurizing and conveying the magnetic suspension to the nozzle, and the volume of the container is 1L.
Preferably, the beam is an aluminum alloy beam and is mounted on the shell through bolts.
Preferably, the material of the inner ring of the shell is high-density polyethylene, and the rest parts are made of electrician pure iron with magnetic shielding performance.
Preferably, the electrical pure iron model is DT 4C.
Preferably, the diameter of the power connector is not more than 15 mm.
Compared with the prior art, the utility model has the advantages of it is following:
the device can detect circumferential cracks at the threads of the opening of the high-pressure gas cylinder, and the conventional method is difficult to detect cracks at the root of the threads.
The device is an integrated magnetic powder detection device and comprises functions of magnetization and magnetic suspension application.
And thirdly, the device adopts a storage battery for power supply, has a portable structure, and is suitable for field in-service detection.
And fourthly, the device adopts direct current to magnetize through a high-performance magnetizing coil, the magnetizing depth is large, and cracks close to the surface are easy to find.
Fifthly, the device is simple and convenient to operate, has high detection efficiency, and can complete the detection of the whole thread surface by one-time operation.
Drawings
Fig. 1 is a schematic view of the internal structure of the present invention.
Fig. 2 is a top view of the present invention.
Wherein: 1. magnetizing coil, 2, power connector, 3, power line, 4, storage battery, 5, nozzle, 6, nozzle connector, 7, hose, 8, container, 9, crossbeam, 10 and shell.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 and 2, the utility model provides an in-service magnetic powder testing device for circumferential defects of a high-pressure steel gas cylinder mouth, which comprises a magnetizing coil 1 for magnetizing the mouth thread of the bottle, a power connector 2 for providing electric energy for the magnetizing coil 1, a power line 3 and a storage battery 4; a nozzle 5 for spraying the magnetic suspension; a nozzle joint 6 for connecting the hose 7 and the nozzle 5, and a container 8 for providing magnetic suspension; a cross beam 9 for fixing the joint 6; a housing 10 for protection and magnetic shielding.
The utility model discloses a concrete detection mode as follows:
before the detection starts, impurities on the bottle mouth to be detected are cleaned, and the detection capability is verified before the detection starts. The paster with the circumferential groove is pasted on the thread face, the device is sleeved on the bottle mouth, then the power is switched on, at the moment, the container for storing the magnetic suspension is manually pressurized, and the magnetic suspension is sprayed by the nozzle through the hose. The pressure is controlled to enable the magnetic suspension to uniformly wet the detected thread surface, if the circumferential groove is clear, the detection sensitivity meets the requirement, if the groove image is not displayed or is not clear, the storage battery is charged or the probe is maintained, the number of turns of the coil is increased, after the detection capability is verified, the thread surface is detected, if the circumferential magnetic mark is found to be displayed, the defect is caused, otherwise, the detection is qualified if no magnetic mark is displayed.
In the example, the detection object is a steel seamless gas cylinder, the outer diameter is 356mm, the length is 1.7m, the wall thickness is 10mm, the working pressure is 20MPa, the material is 30CrMo, the thread code of the gas cylinder opening is PZ39, the diameter of the inner ring of the shell is 63mm, the outer diameter is 95mm, the height is 20mm, the distance from the center of the nozzle to the upper end face is 10mm, the diameter of the nozzle is 12mm, the coil adopts a T2 copper wire and 6000 turns, the storage battery adopts an uninterruptible power supply storage battery, the voltage is 12V, the capacity is 12AH, the detection is carried out by adopting fluorescent magnetic suspension, and 1 part of circumferential crack with the length of about.
Example 2
The structure of the detection device adopted in the embodiment is the same as that of the embodiment 1, except that the outer diameter of the seamless steel cylinder to be detected at this time is 279mm, the length is 1540mm, the code of the thread of the bottle opening is PZ27.8, the inner diameter of the processing shell is 51mm, the outer diameter is 83mm, the height is 20mm, the diameter of the customized nozzle is 8mm, the coil adopts a T2 copper wire, the number of turns is 4500 turns, the detection is carried out by adopting fluorescent magnetic suspension, and recordable magnetic marks are not found and are displayed, so that the detection is qualified.
Claims (10)
1. The utility model provides a be used for high-pressure steel gas cylinder bottleneck circumference defect in service magnetic particle testing device, a serial communication port, the device is including being used for the cover to establish high-pressure steel gas cylinder bottleneck department and lower part open-ended cylinder shell (10) that awaits measuring, install magnetizing coil (1) that the inner wall is used for magnetizing bottleneck screw thread at cylinder shell (10), battery (4) for magnetizing coil (1) energy supply through power connection (2) and power cord (3) respectively, fix crossbeam (9) at shell (10) top, fix on crossbeam (9) and stretch into nozzle (5) that are used for spraying the magnetic suspension and provide the container (8) of magnetic suspension for nozzle (5) through nozzle connection (6) and hose (7) respectively from shell (10) center downwards.
2. The in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder according to claim 1, wherein the magnetizing coil (1) is formed by winding an oxygen-free copper wire with the diameter of 0.3mm, and the number of turns of the magnetizing coil is not less than 4 kiloturns.
3. The in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder according to claim 1, wherein the power connector (2) is a circular connector with shielding and anti-loosening functions.
4. The in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder is characterized in that the storage battery (4) is an uninterruptible power supply battery with a switch, the voltage is 12V, and the capacity is not less than 12 AH.
5. The in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder according to claim 1, wherein the nozzle (5) is arranged at the center inside the shell (10) and comprises a disc part connected with the nozzle joint (6) and a nozzle part arranged on the circumference of the disc part, and the nozzle part is over against the inner wall of the shell (10) and used for uniformly wetting the detected surface of the opening of the high-pressure steel gas cylinder to be detected.
6. The in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder is characterized in that the container (8) is provided with a piston type manual pressurizing device for pressurizing and conveying magnetic suspension to the nozzle (5), and the capacity of the device is 1L.
7. The in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder according to claim 1, wherein the cross beam (9) is an aluminum alloy cross beam and is mounted on the shell through bolts.
8. The in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder according to claim 1, wherein the inner ring of the shell (10) is made of high-density polyethylene, and the rest parts are made of electrician pure iron with magnetic shielding performance.
9. The in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder according to claim 8, wherein the electrical pure iron model is DT 4C.
10. The in-service magnetic powder detection device for the circumferential defects of the opening of the high-pressure steel gas cylinder according to claim 3, wherein the diameter of the power connector (2) is not more than 15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021646084.3U CN212586297U (en) | 2020-08-10 | 2020-08-10 | Be used for high pressure steel gas cylinder bottleneck circumference defect in active service magnetic particle testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021646084.3U CN212586297U (en) | 2020-08-10 | 2020-08-10 | Be used for high pressure steel gas cylinder bottleneck circumference defect in active service magnetic particle testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212586297U true CN212586297U (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021646084.3U Expired - Fee Related CN212586297U (en) | 2020-08-10 | 2020-08-10 | Be used for high pressure steel gas cylinder bottleneck circumference defect in active service magnetic particle testing device |
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| CN (1) | CN212586297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092573A (en) * | 2021-04-19 | 2021-07-09 | 中国特种设备检测研究院 | High pressure hydrogen storage container internal surface defect detection device |
-
2020
- 2020-08-10 CN CN202021646084.3U patent/CN212586297U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092573A (en) * | 2021-04-19 | 2021-07-09 | 中国特种设备检测研究院 | High pressure hydrogen storage container internal surface defect detection device |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210223 Termination date: 20210810 |
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| CF01 | Termination of patent right due to non-payment of annual fee |