CN205333491U - Crack growth test device - Google Patents
Crack growth test device Download PDFInfo
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- CN205333491U CN205333491U CN201620026486.0U CN201620026486U CN205333491U CN 205333491 U CN205333491 U CN 205333491U CN 201620026486 U CN201620026486 U CN 201620026486U CN 205333491 U CN205333491 U CN 205333491U
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- pressure
- test device
- expansion test
- crack expansion
- reducing ring
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Abstract
The utility model relates to a crack growth test device, including fixing device, fixing device is including the installation axle, a plurality of decompressions ring, it is a plurality of the decompression ring is fixed in install epaxially, and follow the axial direction interval of installation axle sets up, and pressure measurement, pressure measurement sets up in arbitrary one on the decompression ring. This crack growth test device, the fluid spills over the pressure variation that arouses and the contact between the crack growth in the time of detecting crack growth, simultaneously, monitor the not pressure -relief of extension portion position decompression baffle of crackle, whether the form of trailing the decompression wave often in the allowed band, makes the experimental data more reliable to can extrapolate the crackle growth rate.
Description
Technical field
This utility model relates to crack extesion experimental technique field, particularly relates to a kind of crack expansion test device。
Background technology
In the augmentation test of resistance to rapid crack of traditional pipe fitting, the fluid between decompressing baffle plate can not be detected in pipeline overflow and depression effect, the relevant sample of process and conclusion are provided and bring many uncertain factors by this, baffle plate and tubing gap length can not be monitored simultaneously, will reduce the accuracy detecting obtained data。
Summary of the invention
Based on this, it is necessary to provide a kind of crack expansion test device, when can detect cracks can spread, fluid overflows contacting between pressure change and the cracks can spread caused；Meanwhile, monitoring crackle does not extend the effect of easing stress of position decompressing baffle plate；Follow the tracks of the form of decompression wave constantly whether in allowed band, make experimental data relatively reliable, and crack growth speed can be extrapolated。
Its technical scheme is as follows:
A kind of crack expansion test device, including fixing device, described fixing device includes installing axle；Multiple pressure-reducing rings, multiple described pressure-reducing rings are fixed on described installation axle, and arrange along the axial direction interval of described installation axle；And pressure-detecting device, described pressure-detecting device is arranged on any one of pressure-reducing ring。
Wherein in an embodiment, described pressure-detecting device is multiple, and one_to_one corresponding is arranged at the periphery of described pressure-reducing ring。
Wherein in an embodiment, described pressure-detecting device is multiple, and one_to_one corresponding is arranged at the side of described pressure-reducing ring。
Wherein in an embodiment, described pressure-detecting device includes baroceptor, and described pressure-reducing ring is provided with the fixed part of fixing described baroceptor。
Wherein in an embodiment, described fixed part is arranged at the periphery of described pressure-reducing ring or/and side。
Wherein in an embodiment, described fixed part is provided with the accommodation chamber holding described baroceptor and the connector matched with described accommodation chamber, and described connector is provided with through hole。
Wherein in an embodiment, described connector detachably coordinates with described accommodation chamber。
Wherein in an embodiment, the spacing between adjacent described pressure-reducing ring is 3cm-15cm。
Wherein in an embodiment, described crack expansion test device also includes limit collar, and described limit collar is arranged on described installation axle, and the internal diameter of described limit collar is more than the external diameter of described pressure-reducing ring。
Wherein in an embodiment, described crack expansion test device also includes percussion device, and described percussion device includes ram, and described ram is arranged at the top of described installation axle, and arranges away from described pressure-reducing ring；Described installation axle is provided with the groove corresponding with described ram。
" first " described in above-mentioned this utility model, " second " do not represent concrete quantity and order, are only used for the differentiation of title。
Above-mentioned the beneficial effects of the utility model:
When above-mentioned crack expansion test device uses, test pipe fitting is fixed by socket in the two ends of described fixing device, and described pressure-reducing ring is arranged in pipe fitting, and by bump test pipe fitting, pressure-detecting device quickly responds and measures test data。When this crack expansion test device can detect cracks can spread, fluid overflows contacting between pressure change and the cracks can spread caused；Meanwhile, monitoring crackle does not extend the effect of easing stress of position decompressing baffle plate；Follow the tracks of the form of decompression wave constantly whether in allowed band, make experimental data relatively reliable, and crack growth speed can be extrapolated。
Accompanying drawing explanation
Fig. 1 is the structural representation of crack expansion test device described in the utility model；
Fig. 2 is the structural representation of the fixed part of pressure-reducing ring described in the utility model；
Fig. 3 is the structural representation of ram described in the utility model。
Description of reference numerals:
100, fixing device, 110, axle is installed, 112, groove, 200, pressure-reducing ring, 210, fixed part, 212, hold chamber, 214, connector, 300, pressure-detecting device, 310, baroceptor, 400, limit collar, 510, ram, 600, test pipe fitting。
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with the drawings and the specific embodiments, this utility model is described in further detail。It should be appreciated that detailed description of the invention described herein is only in order to explain this utility model, do not limit protection domain of the present utility model。
From shown in Fig. 1, a kind of crack expansion test device described in the utility model, including fixing device 100, fixing device 100 includes installing axle 110；Multiple pressure-reducing rings 200, multiple pressure-reducing rings 200 are fixed on installation axle 110, and arrange along the axial direction interval installing axle 110；And pressure-detecting device 300, pressure-detecting device 300 is arranged at the periphery of any one pressure-reducing ring 200。
When crack expansion test device uses, test pipe fitting 600 is fixed by socket in the two ends of fixing device 100, and pressure-reducing ring 200 is arranged in pipe fitting, and by bump test pipe fitting 600, pressure-detecting device 300 quickly responds and measures test data。When this crack expansion test device can detect cracks can spread, fluid overflows contacting between pressure change and the cracks can spread caused；Meanwhile, monitoring crackle does not extend the effect of easing stress of position decompressing baffle plate；Follow the tracks of the form of decompression wave constantly whether in allowed band, make experimental data relatively reliable, and crack growth speed can be extrapolated。
Pressure-detecting device 300 is multiple, and one_to_one corresponding is arranged at the periphery of pressure-reducing ring 200；Or pressure-detecting device 300 is multiple, and one_to_one corresponding is arranged at the side of pressure-reducing ring 200。Each pressure-reducing ring 200 is designed with baroceptor 310 device, it is simple to obtain the test data on correspondence position, it is ensured that the accuracy of detection data。This pressure-detecting device is used for detecting the barometric information of each test point, it is thus achieved that during cracks can spread, fluid overflows contacting between pressure change and the cracks can spread caused。This pressure-detecting device is signal detecting or air pressure detection, it is preferred to air pressure detects。
Pressure-detecting device 300 includes baroceptor 310, and pressure-reducing ring 200 is provided with the fixed part 210 of fixing baroceptor 310。This baroceptor 310 has the advantages that response is quick, accuracy of detection is high。Fixed part 210 is arranged at the periphery of pressure-reducing ring 200 or/and side, pressure-detecting device 300 is fixed on the periphery of pressure-reducing ring or/and side, it is thus achieved that fluid overflows the pressure change caused or/and internal pressure change。
Fixed part 210 is provided with the accommodation chamber 212 holding baroceptor 310 and the connector 214 matched with accommodation chamber 212, connector 214 is provided with through hole (mark), baroceptor 310 is placed and holds chamber 212. and baroceptor 310 is fixed in accommodation chamber 212 with connector 214 again, it is achieved the installation of baroceptor is fixed。Connector 214 detachably coordinates with holding chamber 212, it is simple to the fast assembling-disassembling of baroceptor, for different test requirements documents, installs the baroceptor without specification, simultaneously facilitates the maintenance of crack expansion test device, it is ensured that the reliability of experiment every time。Connector 214 detachably coordinates with holding chamber 212, as fixed cooperation, threaded engagement, secure fit etc.。
Spacing between adjacent pressure-reducing ring 200 is 3cm-15cm, selects according to the pipe range of experiment pipe fitting, it is preferred to 5cm, 10cm。
Crack expansion test device also includes limit collar 400, limit collar 400 is arranged on installation axle 110, and the internal diameter of limit collar 400 is more than the external diameter of pressure-reducing ring 200, by arranging limit collar 400, the operator preventing test pipe fitting 600 from outwards collapsing at the fragment testing During breakopen and to injure, it is ensured that the safety of experiment。
Crack expansion test device also includes percussion device (mark), and percussion device includes ram 510, and ram 510 is arranged at the top installing axle 110, and arranges away from pressure-reducing ring 200；Installing axle 110 and be provided with the groove 112 corresponding with ram 510, this groove 112 has the effect of buffering collision of closed part 510。
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics is absent from contradiction, all it is considered to be the scope that this specification is recorded。
Embodiment described above only have expressed several embodiments of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope。It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model。Therefore, the protection domain of this utility model patent should be as the criterion with claims。
Claims (10)
1. a crack expansion test device, it is characterised in that including:
Fixing device, described fixing device includes installing axle；
Multiple pressure-reducing rings, multiple described pressure-reducing rings are fixed on described installation axle, and arrange along the axial direction interval of described installation axle；And
Pressure-detecting device, described pressure-detecting device is arranged on any one of pressure-reducing ring。
2. crack expansion test device according to claim 1, it is characterised in that described pressure-detecting device is multiple, and one_to_one corresponding is arranged at the periphery of described pressure-reducing ring。
3. crack expansion test device according to claim 1, it is characterised in that described pressure-detecting device is multiple, and one_to_one corresponding is arranged at the side of described pressure-reducing ring。
4. crack expansion test device according to claim 1, it is characterised in that described pressure-detecting device includes baroceptor, described pressure-reducing ring is provided with the fixed part of fixing described baroceptor。
5. crack expansion test device according to claim 4, it is characterised in that described fixed part is arranged at the periphery of described pressure-reducing ring or/and side。
6. crack expansion test device according to claim 4, it is characterised in that described fixed part is provided with the accommodation chamber holding described baroceptor and the connector matched with described accommodation chamber, and described connector is provided with through hole。
7. crack expansion test device according to claim 6, it is characterised in that described connector detachably coordinates with described accommodation chamber。
8. crack expansion test device according to claim 1, it is characterised in that the spacing between adjacent described pressure-reducing ring is 3cm-15cm。
9. the crack expansion test device according to any one of claim 1-8, it is characterised in that also include limit collar, described limit collar is arranged on described installation axle, and the internal diameter of described limit collar is more than the external diameter of described pressure-reducing ring。
10. the crack expansion test device according to any one of claim 1-8, it is characterised in that also include percussion device, described percussion device includes ram, and described ram is arranged at the top of described installation axle, and arranges away from described pressure-reducing ring；Described installation axle is provided with the groove corresponding with described ram。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620026486.0U CN205333491U (en) | 2016-01-11 | 2016-01-11 | Crack growth test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620026486.0U CN205333491U (en) | 2016-01-11 | 2016-01-11 | Crack growth test device |
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| CN205333491U true CN205333491U (en) | 2016-06-22 |
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| CN201620026486.0U Active CN205333491U (en) | 2016-01-11 | 2016-01-11 | Crack growth test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442152A (en) * | 2016-09-19 | 2017-02-22 | 南华大学 | Testing apparatus for stably applying osmotic pressure with crack propagation |
| CN107631943A (en) * | 2016-08-31 | 2018-01-26 | 广州特种承压设备检测研究院 | A kind of tubing experimental rig of resistance to Rapid Crack |
| CN109580363A (en) * | 2018-10-11 | 2019-04-05 | 中国石油天然气集团有限公司 | A kind of calculation method based on Full scale burst experiment natural gas depressurization wave profile |
-
2016
- 2016-01-11 CN CN201620026486.0U patent/CN205333491U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631943A (en) * | 2016-08-31 | 2018-01-26 | 广州特种承压设备检测研究院 | A kind of tubing experimental rig of resistance to Rapid Crack |
| CN107631943B (en) * | 2016-08-31 | 2024-01-12 | 广州特种承压设备检测研究院 | Quick crack growth resistance test device for pipe |
| CN106442152A (en) * | 2016-09-19 | 2017-02-22 | 南华大学 | Testing apparatus for stably applying osmotic pressure with crack propagation |
| CN106442152B (en) * | 2016-09-19 | 2018-10-19 | 南华大学 | It is a kind of to stablize the experimental rig for applying osmotic pressure with crack propagation |
| CN109580363A (en) * | 2018-10-11 | 2019-04-05 | 中国石油天然气集团有限公司 | A kind of calculation method based on Full scale burst experiment natural gas depressurization wave profile |
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