CN208140643U - A kind of well for storage casing split and cracking defect detection calibration sample pipe - Google Patents
A kind of well for storage casing split and cracking defect detection calibration sample pipe Download PDFInfo
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- CN208140643U CN208140643U CN201820586636.2U CN201820586636U CN208140643U CN 208140643 U CN208140643 U CN 208140643U CN 201820586636 U CN201820586636 U CN 201820586636U CN 208140643 U CN208140643 U CN 208140643U
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Abstract
The utility model discloses a kind of well for storage casing splits and cracking defect detection calibration sample pipe, belong to Nondestructive Testing Techniques for Special Equipment field.It includes the different slot of multiple sizes, the slot position is on the tube wall of the calibration sample pipe, the material of the calibration sample pipe is identical as the material of underground gas storage casing to be detected, and the specification of the calibration sample pipe is identical as the specification of underground gas storage casing to be detected.It solves the problems, such as that the prior art there is no crackle and cracking defect to demarcate sample pipe and with actually detected signal compared with demarcating flaw indication, determine defect type and size in actually detected；Or will test and demarcate sample pipe with probe detection, compare detection signal and calibration flaw indication, thereby determine that probe precision and accuracy, according to comparison result adjustment detection probe parameter, realizes the calibration of detection device.
Description
Technical field
The utility model belongs to Nondestructive Testing Techniques for Special Equipment field, and in particular to a kind of well for storage casing split
It detects with cracking defect with calibration sample pipe.
Background technique
CNG well for storage uses nearly 30 years as a kind of buried high-pressure bottle in China, because it compares gas storage
The modes such as bottle, tank have the characteristics that high safety, gas-storing capacity are big, service efficiency is high, save space, use cost is low, send out in recent years
Exhibition is rapid, it has also become the main gas storage equipment of CNG gas station of China, utilization rate about 80%, each colleges and universities and scientific research institution also open in succession
Open up correlative study, related gas storage well examines the theory detected, standard, the positive gradual perfection of specification, but " supergage, overproof " is still general
Store-through exists, and especially in gas storage well context of detection, lacks unified defect calibration sample pipe, with reference to demarcation signal and evaluation criterion, sternly
The development of China's gas storage well correlation detection technology is hindered again.
Well for storage casing split and the detection difficulty of cracking defect itself are larger, in addition gas storage well sleeve is embedded in ground
Under, tube wall internal and external environment is complicated, thus is less susceptible to detect and demarcate, be difficult accurate judgement crackle and cracking defect position and
Size equivalent.
Chinese utility model patent, publication number：CN205607347U, the day for announcing：On September 28th, 2016, discloses gas storage
Well ultrasonic thickness measurement Special test block and measuring thickness device, gas storage well ultrasonic thickness measurement Special test block include flange and test block, flange and
Test block is connected through a screw thread；Test block is cylindrical structure, and cylinder outer peripheral surface is ladder-like in a ring.Gas storage well ultrasonic thickness measurement device packet
Include control device, winch, cable and optical cable, lower sheave, top sheave, ultrasonic probe system, thickness measuring Special test block device and auxiliary
Mobile device；When detection, control device, winch, lower sheave are fixed on the ground, top sheave is hung by mobility-aid apparatus
Right above gas storage well to be detected；Thickness measuring Special test block is arranged in gas storage well well head to be detected；One end of cable and optical cable and control
Device connection, the other end connect after winding multi-turn on winch by lower sheave, top sheave and ultrasonic probe system.By setting
Ultrasonic thickness measurement Special test block is set, ultrasonic probe system can be calibrated and be checked at detection scene, guarantees testing number
According to precision.Its shortcoming is：The program is only applicable to the calibration of large area wall thickness reduction defect and detection on-site test is visited
The calibration and review of head, and it is not suitable for crackle and cracking defect to more risk.
Summary of the invention
1, it to solve the problems, such as
Aiming at the problem that existing calibration sample pipe can not be suitable for crackle and cracking defect is detected and demarcated, the utility model
A kind of well for storage casing split and cracking defect detection calibration sample pipe are provided, it can be used in well for storage detection
The research of middle crackle and cracking defect, the calibration and review of signal scaling, detection probe, solve the prior art lack crackle with
Cracking defect demarcates the problem of sample pipe.
2, technical solution
To solve the above problems, the utility model adopts the following technical scheme.
A kind of well for storage casing split and cracking defect detection calibration sample pipe, including the different slot of multiple sizes,
The slot position in it is described calibration sample pipe tube wall on, it is described calibration sample pipe material and underground gas storage casing to be detected material
It is identical, and the internal diameter of the calibration sample pipe, wall thickness and internal diameter, the wall thickness of underground gas storage casing to be detected are corresponding identical.
When ultrasonic wave is propagated in the medium, there is the characteristic of reflection on different interfaces, such as encounter defect, ultrasonic wave is lacking
It is reflected on falling into, defectoscope can show back wave, and impulse waveform, the calibration in this programme are formed on fluorescent screen
Sample pipe and the material and specification of underground gas storage casing to be detected are all the same, and the slot demarcated on sample tube wall is used as referring to mark
Standard, ultrasonic probe detect the signal characteristic fed back when underground gas storage casing to be detected (for example, being formed on fluorescent screen
Impulse waveform feature) it is compared with the signal characteristic fed back when ultrasonic probe detection calibration sample pipe, such as two kinds of signals
Feature is consistent, then illustrates the ruler of flaw size equivalent and the slot as reference standard on underground gas storage casing tube wall to be detected
Very little equivalent is identical, and the position where crackle and cracking defect is identical as the position where the slot, utilizes the calibration of this programme
Sample pipe can effectively judge position and the size of well for storage casing split and cracking defect.
Further, the slot is at least one of rectangular channel and annular groove；Rectangular channel and annular groove are convenient for demarcating
Processed on sample tube wall, and with coherent detection standard/specification (such as：《NB/T47013-2015. the lossless inspection of bearing device
It surveys》,《API Spec5CT/ISO11960:2004-2006. casing and oil pipe specification》) in regulation it is consistent, wherein：(1) sharp
Localized cracks are simulated with rectangular channel, if detecting calibration sample pipe and underground gas storage casing to be detected by ultrasonic probe at this time,
The signal that the two is fed back is consistent, then the crackle on well for storage casing wall is localized cracks；(2) it is simulated using annular groove
Complete cycle crackle, if being fed back at this time by ultrasonic probe detection calibration sample pipe and underground gas storage casing to be detected, the two
Signal it is consistent, then the crackle on well for storage casing wall be complete cycle crackle.
Further, the rectangular channel includes at least one of longitudinal rectangular channel and lateral rectangular channel；
Wherein, longitudinal rectangular channel refers to the length direction rectangular channel parallel with the axis direction of sample pipe is demarcated, lateral square
Shape slot refers to length direction and demarcates the perpendicular rectangular channel of axis direction of sample pipe, longitudinal rectangular channel in this programme be in order to
Longitudinal crack is demarcated, and lateral rectangular channel is to demarcate transversal crack.
Further, the length of the rectangular channel is 2mm~25.4mm, and width is 0.5mm~1.5mm, depth 0.2mm
~4mm.
Further, the width of the annular groove is 0.5mm~1.5mm, and depth is 0.2mm~4mm.
Crack size equivalent on underground gas storage casing tube wall mainly fluctuates in above range, therefore, is designing
It is only needed when demarcating sample pipe by the size setting of slot in the above range.
Further, the calibration sample pipe includes calibration sample pipe A, calibration sample pipe B and calibration sample pipe C, the calibration sample pipe A
Tube wall open up longitudinal rectangular channel, the tube wall of the calibration sample pipe B opens up lateral rectangular channel, and the tube wall of the calibration sample pipe C is opened
If annular groove, and the annular groove is along the circumferentially distributed of calibration sample pipe C；
Wherein, longitudinal rectangular channel is the length direction rectangular channel parallel with the axis direction of sample pipe is demarcated, lateral rectangle
Slot is the length direction rectangular channel perpendicular with the axis direction of calibration sample pipe.
Only open up a form of slot on each calibration sample tube wall, that is, only include longitudinal rectangular channel, lateral rectangular channel and
One of annular groove, probe detection calibration sample pipe A, calibration sample pipe B and when demarcating sample pipe C the signal that feeds back respectively as
Probe is detected underground gas storage casing to be detected and fed back by the standard signal of longitudinal crack, transversal crack and complete cycle crackle
Signal be compared respectively with three kinds of standard signals, help to be recognized accurately on underground gas storage casing tube wall to be detected
Crack-type.
Further, the slot position is on the inner wall and/or outer wall of the calibration sample pipe.
Further, the slot is parallel to the axis of the calibration sample pipe.
Further, the slot is uniformly distributed along the circumferential direction of the calibration sample pipe.
Further, it is uniformly distributed on axis direction of the slot along the calibration sample pipe.
Slot position for being distributed and of different sizes on calibration sample pipe, is able to detect the crackle of calibration and the position of cracking defect
It is also different with size, the slot of the inner wall of calibration sample pipe is distributed in convenient for comparing with the crackle on inner wall with cracking defect, is divided
Slot on the outer wall of calibration sample pipe is distributed in be convenient for comparing with the crackle on outer wall with cracking defect, and will be as reference standard
Slot is arranged to be parallel to the axis of the calibration sample pipe, is uniformly distributed either along the circumferential direction of the calibration sample pipe along described
It demarcates on the axis direction of sample pipe and is uniformly distributed the crackle and cracking defect that can effectively simulate different location.
This programme is mainly used for the detection and research, calibration crackle of the crackle and cracking defect of underground gas storage well shaft casing
With cracking defect signal, the calibration of detection probe and review and the exploitation of detection technique, there is material to meet reality, specification culvert
The characteristics of lid range is wide, compact-sized, calibration defect multi-size.
3, beneficial effect
Compared with the prior art, the beneficial effects of the utility model are：
(1) the utility model passes through in material and specification and underground gas storage casing to be detected calibration sample all the same
Slot is opened up on tube wall as reference standard, ultrasonic probe detects the signal fed back when underground gas storage casing to be detected
Feature (for example, forming impulse waveform feature on fluorescent screen) and the signal fed back when ultrasonic probe detection calibration sample pipe
Feature is compared, if two kinds of signal characteristics are consistent, illustrates that flaw size is worked as on underground gas storage casing tube wall to be detected
Amount is identical as the size equivalent of the slot as reference standard, and the position where crackle and cracking defect and the position where the slot
Set it is identical, using the calibration sample pipe of this programme can effectively judge well for storage casing split and cracking defect position and
Size, thus solve the problems, such as that existing calibration sample pipe can not be suitable for crackle and cracking defect detection and demarcate；
(2) rectangular channel in the utility model and annular groove are convenient for processing on calibration sample tube wall, and with《NB/
T47013-2015. bearing device non-destructive testing》, and《API Spec 5CT/ISO11960:2004-2006. casing and oil pipe
Specification》In regulation it is consistent；
(3) the utility model simulates localized cracks using rectangular channel, and annular groove simulates complete cycle crackle, it is thus possible to accurately
The type of crackle and cracking defect on well for storage set tube wall is distinguished in detection；
(4) the utility model simulates longitudinal crack, transversal crack using longitudinal rectangular channel, lateral rectangular channel respectively, is examining
The type of crackle and cracking defect on underground gas storage casing tube wall has more subtly been distinguished in mark timing；
(5) specification of the slot of the utility model can cover the aging crack on underground gas storage casing tube wall comprehensively
With the size equivalent of cracking defect；
(6) the utility model is to be checked by probe detection by only opening up a form of slot on different calibration sample pipes
The signal that gas storage well sleeve is fed back under geodetic is compared with various criterion signal respectively, helps to be recognized accurately to be checked
Crack-type under geodetic on gas storage well sleeve tube wall；
(7) the utility model bracket groove position for being distributed and of different sizes on calibration sample pipe, can cover underground storage comprehensively
Gas well covers the crackle and cracking defect of different location on tube wall；
(8) the utility model is suitable for the detection and research, mark of the crackle and cracking defect of underground gas storage well shaft casing
Determine crackle and cracking defect signal, the calibration of detection probe and review and the exploitation of detection technique, have material meet it is practical,
The characteristics of specification covering scope is wide, compact-sized, calibration defect multi-size, and structure is simple, and design rationally, is easy to make
It makes.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for demarcating sample pipe A；
Fig. 2 is the structural schematic diagram for demarcating sample pipe B；
Fig. 3 is the structural schematic diagram for demarcating sample pipe C；
Fig. 4 is the structural schematic diagram for demarcating sample pipe D；
In figure：1, sample pipe A is demarcated；2, sample pipe B is demarcated；3, sample pipe C is demarcated；4, sample pipe D is demarcated；5, longitudinal rectangular channel；6,
Lateral rectangular channel；7, annular groove.
Specific embodiment
The utility model is further described below in the following with reference to the drawings and specific embodiments.
Embodiment 1
As shown in Figures 1 to 4, a kind of well for storage casing split and cracking defect detection calibration sample pipe, including it is more
The different slot of a size, the slot position in it is described calibration sample pipe tube wall on, it is described calibration sample pipe material and underground to be detected
The material of gas storage well sleeve is identical, and the internal diameter of the internal diameter of the calibration sample pipe and underground gas storage casing to be detected, the mark
The wall thickness of random sample pipe is identical as the wall thickness of underground gas storage casing to be detected.
Slot in the present embodiment is arranged on the inner wall or outer wall of calibration sample pipe, Huo Zhe according to the needs of detection, calibration
It demarcates on the inner and outer wall of sample pipe and opens up slot, when ultrasonic wave is propagated in the medium, there is the spy of reflection on different interfaces
Property, defect is such as encountered, ultrasonic wave reflects in defect, and defectoscope can show back wave, the shape on fluorescent screen
It is all the same using material, internal diameter and the wall thickness of demarcating sample pipe and underground gas storage casing to be detected in this programme at impulse waveform,
The slot on sample tube wall is demarcated as reference standard, ultrasonic probe, which detects, to be fed back when underground gas storage casing to be detected
What signal characteristic (for example, forming impulse waveform feature on fluorescent screen) was fed back when demarcating sample pipe with ultrasonic probe detection
Signal characteristic is compared, and such as two kinds of signal characteristics are consistent, then illustrates the ruler of crackle on underground gas storage casing tube wall to be detected
Very little equivalent is identical as the size equivalent of the slot as reference standard, and position and slot place where crackle and cracking defect
Position it is identical, the position of well for storage casing split and cracking defect can be effectively judged using the calibration sample pipe of this programme
It sets and size.
Embodiment 2
A kind of well for storage casing split and cracking defect detection calibration sample pipe, structure compared with Example 1, institute
Unlike：The slot is at least one of rectangular channel and annular groove 7, and slot described in the present embodiment is annular groove 7, such as Fig. 3
It is shown.
When it is implemented, the slot can also be designed to rectangular channel, as depicted in figs. 1 and 2, wherein calibration shown in FIG. 1
The tube wall of sample pipe A1 opens up longitudinal rectangular channel 5, and the tube wall of calibration sample pipe B2 shown in Fig. 2 opens up lateral rectangular channel 6；Alternatively,
Rectangular channel and annular groove 7 are opened up simultaneously on the tube wall of the calibration sample pipe, as shown in Figure 4.
Rectangular channel and annular groove 7 are convenient for processing on calibration sample tube wall, and with coherent detection standard/specification (such as：
《NB/T47013-2015. bearing device non-destructive testing》,《API Spec 5CT/ISO11960:2004-2006. casing and oil pipe
Specification》) in regulation it is consistent, wherein：(1) localized cracks are simulated using rectangular channel, if detecting at this time by ultrasonic probe
Sample pipe and underground gas storage casing to be detected are demarcated, the signal that the two is fed back is consistent, then on well for storage casing wall
Crackle is localized cracks；(2) using annular groove 7 simulate complete cycle crackle, if at this time by ultrasonic probe detection calibration sample pipe with
Underground gas storage casing to be detected, the signal that the two is fed back is consistent, then the crackle on well for storage casing wall is complete cycle
Crackle.
Embodiment 3
A kind of well for storage casing split and cracking defect detection calibration sample pipe, structure compared with Example 1, institute
Unlike：The calibration sample pipe includes calibration sample pipe A1, calibration sample pipe B2 and calibration sample pipe C3, the pipe of the calibration sample pipe A1
Wall opens up longitudinal rectangular channel 5, and the tube wall of the calibration sample pipe B2 opens up lateral rectangular channel 6, and the tube wall of the calibration sample pipe C3 is opened
If annular groove 7, and the annular groove 7 is along the circumferentially distributed of calibration sample pipe C3；
Wherein, longitudinal rectangular channel 5 is the length direction rectangular channel parallel with the axis direction of sample pipe is demarcated, lateral rectangle
Slot 6 is the length direction rectangular channel perpendicular with the axis direction of calibration sample pipe.
A form of slot is only opened up on each calibration sample tube wall, that is, only includes longitudinal rectangular channel 5, lateral rectangular channel 6
One of with annular groove 7, signal point that probe detection calibration sample pipe A1, calibration sample pipe B2 and while demarcating sample pipe C3 feed back
Not as longitudinal crack, the standard signal of transversal crack and complete cycle crackle, it is anti-that probe is detected into underground gas storage casing to be detected
It is fed back to the signal come to be compared with three kinds of standard signals respectively, helps that underground gas storage casing pipe to be detected is recognized accurately
Crack-type on wall.
Embodiment 4
A kind of well for storage casing split and cracking defect detection calibration sample pipe, structure compared with Example 1, institute
Unlike：The slot is parallel to the axis of the calibration sample pipe, and the slot is uniformly distributed along the circumferential direction of the calibration sample pipe,
And it is uniformly distributed on axis direction of the slot along the calibration sample pipe.
Slot position for being distributed and of different sizes on calibration sample pipe, is able to detect the crackle of calibration and the position of cracking defect
It is also different with size, the slot of the inner wall of calibration sample pipe is distributed in convenient for comparing with the crackle on inner wall with cracking defect, is divided
Slot on the outer wall of calibration sample pipe is distributed in be convenient for comparing with the crackle on outer wall with cracking defect, and will be as reference standard
Slot is arranged to be parallel to the axis of the calibration sample pipe, is uniformly distributed either along the circumferential direction of the calibration sample pipe along described
It demarcates on the axis direction of sample pipe and is uniformly distributed the crackle and cracking defect that can effectively simulate different location.Distribution when slot opens up
Position and of different sizes, then can cover the crackle and cracking defect of different location on underground gas storage casing tube wall comprehensively,
Calibration sample pipe in the present embodiment is suitable for the detection and research, calibration of the crackle and cracking defect of underground gas storage well shaft casing
There is material to meet practical, rule for crackle and cracking defect signal, the calibration of detection probe and review and the exploitation of detection technique
The characteristics of lattice covering scope is wide, compact-sized, calibration defect multi-size, and structure is simple, and design is rationally, easily fabricated.
Embodiment 5
A kind of well for storage casing split and cracking defect detection calibration sample pipe, as shown in Figure 1, calibration sample pipe A1
Material is identical as the material of underground gas storage casing to be detected, and the specification of the calibration sample pipe A1 and underground to be detected are stored up
The specification of gas well casing is identical, and calibration sample pipe A1 opens up longitudinal rectangular channel on the inner and outer wall for be parallel to axis direction
5, two sides of longitudinal rectangular channel 5 are parallel to each other, away from opening up first group of longitudinal moment at the 250mm of upper surface in the axial direction
Shape slot 5 opens up one group of longitudinal direction rectangular channel 5 at interval of 100mm in the axial direction thereafter, opens up 12 groups altogether, every group of 5 longitudinal moments
Shape slot 5 is evenly distributed, and the specific location for demarcating longitudinal rectangular channel 5 on sample pipe A1 is opened up with size according to the form below：
The size and distributing position of the longitudinal rectangular channel 5 of table 1
Embodiment 6
As shown in Figure 1, Figure 2 and Figure 4, a kind of well for storage casing split and cracking defect detection calibration sample pipe, packet
Include calibration sample pipe A1, calibration sample pipe B2, calibration sample pipe D4, calibration sample pipe A1, calibration sample pipe B2 and demarcate sample pipe D4 material with
The material of underground gas storage casing to be detected is identical, and is N80, wherein calibration sample pipe A1, calibration sample pipe B2 and calibration sample pipe
The specification of D4 is identical as the specification of underground gas storage casing to be detected, and be Φ 244.48mm × 11.99mm ×
1400mm, 3 calibration sample pipe material therefors are underground gas storage casing common used material now.
Calibration sample pipe A1 opens up longitudinal rectangular channel 5 on the inner and outer wall for being parallel to calibration sample pipe A1 axis direction, indulges
Be parallel to each other to two sides of rectangular channel 5, along calibration sample pipe A1 axis direction away from opening up first group at the 250mm of upper surface
Longitudinal rectangular channel 5 opens up one group of longitudinal direction rectangular channel 5 at interval of 100mm in the axial direction thereafter, opens up 10 groups, every group 5 altogether
Longitudinal rectangular channel 5 is evenly distributed, and the specific location for demarcating longitudinal rectangular channel 5 on sample pipe A1 is opened up with size according to the form below：
The size and distributing position of the longitudinal rectangular channel 5 of table 2
Calibration sample pipe B2 opens up lateral rectangular channel 6 on the inner and outer wall for being parallel to calibration sample pipe B2 axis direction, horizontal
Be parallel to each other to two sides of rectangular channel 6, along calibration sample pipe B2 axis direction away from opening up first group at the 250mm of upper surface
Lateral rectangular channel 6 opens up one group of transverse direction rectangular channel 6 at interval of 100mm in the axial direction thereafter, opens up 10 groups, every group 5 altogether
Lateral rectangular channel 6 is evenly distributed, and the specific location for demarcating lateral rectangular channel 6 on sample pipe B2 is opened up with size according to the form below：
The size and distributing position of the lateral rectangular channel 6 of table 3
Calibration sample pipe D4 opens up lateral rectangular channel 6 on the inner and outer wall for being parallel to calibration sample pipe D4 axis direction, horizontal
Be parallel to each other to two sides of rectangular channel 6, along calibration sample pipe D4 axis direction away from opening up first group at the 250mm of upper surface
Lateral rectangular channel 6 opens up one group of transverse direction rectangular channel 6 at interval of 100mm in the axial direction thereafter, opens up 6 groups, every group 5 altogether
Lateral rectangular channel 6 is evenly distributed, and opens up annular groove 7 in the lower section of 6 groups of transverse direction rectangular channels 6, opens up 6 groups altogether, demarcates sample 4
Upper transverse direction rectangular channel 6 and the specific location of annular groove 7 are opened up with size according to the form below：
Table 4 demarcates the size and distributing position of slot on sample pipe D4 tube wall
The identical internal diameter for referring to calibration sample pipe of specification, wall thickness and underground gas storage casing to be detected in the present embodiment
Internal diameter, wall thickness correspond to it is identical.The use process of calibration sample pipe A1, calibration sample pipe B2 and calibration sample pipe D4 in the present embodiment are such as
Under：Using standard detection probe to the above calibration defect sample pipe (demarcate sample pipe A1, calibration sample pipe B2 and demarcate sample pipe D4)
Artificial calibration defect is detected, and the data-signal of acquisition calibration defect obtains the data-signal feature of calibration defect, research point
It analyses obtained calibration flaw indication and with actually detected signal compared with demarcating flaw indication, determines defect class in actually detected
Type and size；Or will test and demarcate sample pipe with probe detection, compare detection signal and calibration flaw indication, thereby determines that probe
Precision and accuracy adjust detection probe parameter according to comparison result, realize the calibration of detection device.
Claims (10)
1. a kind of well for storage casing split and cracking defect detection calibration sample pipe, it is characterised in that：Including multiple sizes
Different slots, the slot position in it is described calibration sample pipe tube wall on, it is described calibration sample pipe material and well for storage to be detected
The material of casing is identical, and internal diameter, the wall thickness of the calibration sample pipe are corresponding with internal diameter, the wall thickness of underground gas storage casing to be detected
It is identical.
2. well for storage casing split according to claim 1 and cracking defect detection calibration sample pipe, feature exist
In：The slot is at least one of rectangular channel and annular groove (7).
3. well for storage casing split according to claim 2 and cracking defect detection calibration sample pipe, feature exist
In：The rectangular channel includes at least one of longitudinal rectangular channel (5) and lateral rectangular channel (6)；
Wherein, longitudinal rectangular channel (5) refers to the length direction rectangular channel parallel with the axis direction of sample pipe is demarcated, lateral rectangle
Slot (6) refers to the perpendicular rectangular channel of the axis direction of length direction and calibration sample pipe.
4. well for storage casing split according to claim 2 or 3 and cracking defect detection calibration sample pipe, feature
It is：The length of the rectangular channel is 2mm~25.4mm, and width is 0.5mm~1.5mm, and depth is 0.2mm~4mm.
5. well for storage casing split according to claim 2 and cracking defect detection calibration sample pipe, feature exist
In：The width of the annular groove is 0.5mm~1.5mm, and depth is 0.2mm~4mm.
6. well for storage casing split according to claim 1 and cracking defect detection calibration sample pipe, feature exist
In：The calibration sample pipe includes calibration sample pipe A (1), calibration sample pipe B (2) and demarcates sample pipe C (3), calibration sample pipe A (1)
Tube wall opens up longitudinal rectangular channel (5), and the tube wall of calibration sample pipe B (2) opens up lateral rectangular channel (6), the calibration sample pipe C
(3) tube wall opens up annular groove (7), and the annular groove (7) is along the circumferentially distributed of calibration sample pipe C (3)；
Wherein, longitudinal rectangular channel (5) is the length direction rectangular channel parallel with the axis direction of sample pipe is demarcated, lateral rectangular channel
(6) rectangular channel perpendicular for the axis direction of length direction and calibration sample pipe.
7. well for storage casing split according to claim 1 and cracking defect detection calibration sample pipe, feature exist
In：The slot position is on the inner wall and/or outer wall of the calibration sample pipe.
8. well for storage casing split according to claim 1 and cracking defect detection calibration sample pipe, feature exist
In：The slot is parallel to the axis of the calibration sample pipe.
9. well for storage casing split according to claim 1 and cracking defect detection calibration sample pipe, feature exist
In：The slot is uniformly distributed along the circumferential direction of the calibration sample pipe.
10. well for storage casing split according to claim 1 and cracking defect detection calibration sample pipe, feature exist
In：The slot is uniformly distributed on the axis direction along the calibration sample pipe.
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| CN201820586636.2U CN208140643U (en) | 2018-04-24 | 2018-04-24 | A kind of well for storage casing split and cracking defect detection calibration sample pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441405A (en) * | 2019-07-26 | 2019-11-12 | 大唐东北电力试验研究院有限公司 | Nearby heat fatigue cracking detects reference block to the hydrophobic pore of high temperature steam pipeline |
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2018
- 2018-04-24 CN CN201820586636.2U patent/CN208140643U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441405A (en) * | 2019-07-26 | 2019-11-12 | 大唐东北电力试验研究院有限公司 | Nearby heat fatigue cracking detects reference block to the hydrophobic pore of high temperature steam pipeline |
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